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Removed SDL_image and libjpeg, since they're never used.

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This commit is contained in:
Alex Szpakowski
2015-07-18 16:05:03 -03:00
parent 7754037d27
commit 7471269bee
228 changed files with 0 additions and 149563 deletions
Download Patch File Download Diff File Expand all files Collapse all files
CMakeLists.txt
-8
View File
@@ -137,7 +137,6 @@ set(MEGA_LIBVORBIS_VER "1.3.3")
set(MEGA_MPG123_VER "1.15.3")
set(MEGA_FREETYPE_VER "2.5.0.1")
set(MEGA_SDL2_VER "2.0.3-1c0f6952e65e")
set(MEGA_SDL2_IMAGE_VER "2.0.0")
set(MEGA_OPENAL_VER "1.16.0")
set(MEGA_JASPER_VER "1.900.1")
set(MEGA_TIFF_VER "4.0.3")
@@ -239,12 +238,6 @@ message(STATUS "-----------------------------------------------------")
add_subdirectory("libs/DevIL-${MEGA_DEVIL_VER}" ${CMAKE_BINARY_DIR}/DevIL)
set(MEGA_DEVIL DevIL)
message(STATUS "-----------------------------------------------------")
message(STATUS "Configuring: SDL2_image ${MEGA_SDL2_IMAGE_VER}")
message(STATUS "-----------------------------------------------------")
add_subdirectory("libs/SDL2_image-${MEGA_SDL2_IMAGE_VER}" ${CMAKE_BINARY_DIR}/SDL2_image)
set(MEGA_SDL2_IMAGE SDL2_image-static)
message(STATUS "-----------------------------------------------------")
message(STATUS "Configuring: libmodplug ${MEGA_MODPLUG_VER}")
message(STATUS "-----------------------------------------------------")
@@ -304,7 +297,6 @@ set(MEGA_3P
${MEGA_FREETYPE}
${MEGA_SDL2}
${MEGA_SDL2MAIN}
${MEGA_SDL2_IMAGE}
${MEGA_OPENAL}
${MEGA_JASPER}
${MEGA_TIFF}
libs/SDL2_image-2.0.0/Android.mk
-121
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@@ -1,121 +0,0 @@
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := SDL2_image
# Enable this if you want to support loading JPEG images
# The library path should be a relative path to this directory.
SUPPORT_JPG := true
JPG_LIBRARY_PATH := external/jpeg-9
# Enable this if you want to support loading PNG images
# The library path should be a relative path to this directory.
SUPPORT_PNG := true
PNG_LIBRARY_PATH := external/libpng-1.6.2
# Enable this if you want to support loading WebP images
# The library path should be a relative path to this directory.
SUPPORT_WEBP := true
WEBP_LIBRARY_PATH := external/libwebp-0.3.0
LOCAL_C_INCLUDES := $(LOCAL_PATH)
LOCAL_CFLAGS := -DLOAD_BMP -DLOAD_GIF -DLOAD_LBM -DLOAD_PCX -DLOAD_PNM \
-DLOAD_TGA -DLOAD_XCF -DLOAD_XPM -DLOAD_XV
LOCAL_CFLAGS += -O3 -fstrict-aliasing -fprefetch-loop-arrays
LOCAL_SRC_FILES := $(notdir $(filter-out %/showimage.c, $(wildcard $(LOCAL_PATH)/*.c)))
LOCAL_LDLIBS :=
LOCAL_STATIC_LIBRARIES :=
LOCAL_SHARED_LIBRARIES := SDL2
ifeq ($(SUPPORT_JPG),true)
LOCAL_C_INCLUDES += $(LOCAL_PATH)/$(JPG_LIBRARY_PATH)
LOCAL_CFLAGS += -DLOAD_JPG
# We can include the sources directly so the user doesn't have to...
#LOCAL_STATIC_LIBRARIES += jpeg
LOCAL_CFLAGS += -DAVOID_TABLES
LOCAL_SRC_FILES += \
$(JPG_LIBRARY_PATH)/jaricom.c \
$(JPG_LIBRARY_PATH)/jcapimin.c \
$(JPG_LIBRARY_PATH)/jcapistd.c \
$(JPG_LIBRARY_PATH)/jcarith.c \
$(JPG_LIBRARY_PATH)/jccoefct.c \
$(JPG_LIBRARY_PATH)/jccolor.c \
$(JPG_LIBRARY_PATH)/jcdctmgr.c \
$(JPG_LIBRARY_PATH)/jchuff.c \
$(JPG_LIBRARY_PATH)/jcinit.c \
$(JPG_LIBRARY_PATH)/jcmainct.c \
$(JPG_LIBRARY_PATH)/jcmarker.c \
$(JPG_LIBRARY_PATH)/jcmaster.c \
$(JPG_LIBRARY_PATH)/jcomapi.c \
$(JPG_LIBRARY_PATH)/jcparam.c \
$(JPG_LIBRARY_PATH)/jcprepct.c \
$(JPG_LIBRARY_PATH)/jcsample.c \
$(JPG_LIBRARY_PATH)/jctrans.c \
$(JPG_LIBRARY_PATH)/jdapimin.c \
$(JPG_LIBRARY_PATH)/jdapistd.c \
$(JPG_LIBRARY_PATH)/jdarith.c \
$(JPG_LIBRARY_PATH)/jdatadst.c \
$(JPG_LIBRARY_PATH)/jdatasrc.c \
$(JPG_LIBRARY_PATH)/jdcoefct.c \
$(JPG_LIBRARY_PATH)/jdcolor.c \
$(JPG_LIBRARY_PATH)/jddctmgr.c \
$(JPG_LIBRARY_PATH)/jdhuff.c \
$(JPG_LIBRARY_PATH)/jdinput.c \
$(JPG_LIBRARY_PATH)/jdmainct.c \
$(JPG_LIBRARY_PATH)/jdmarker.c \
$(JPG_LIBRARY_PATH)/jdmaster.c \
$(JPG_LIBRARY_PATH)/jdmerge.c \
$(JPG_LIBRARY_PATH)/jdpostct.c \
$(JPG_LIBRARY_PATH)/jdsample.c \
$(JPG_LIBRARY_PATH)/jdtrans.c \
$(JPG_LIBRARY_PATH)/jerror.c \
$(JPG_LIBRARY_PATH)/jfdctflt.c \
$(JPG_LIBRARY_PATH)/jfdctfst.c \
$(JPG_LIBRARY_PATH)/jfdctint.c \
$(JPG_LIBRARY_PATH)/jidctflt.c \
$(JPG_LIBRARY_PATH)/jidctfst.S \
$(JPG_LIBRARY_PATH)/jidctint.c \
$(JPG_LIBRARY_PATH)/jquant1.c \
$(JPG_LIBRARY_PATH)/jquant2.c \
$(JPG_LIBRARY_PATH)/jutils.c \
$(JPG_LIBRARY_PATH)/jmemmgr.c \
$(JPG_LIBRARY_PATH)/jmem-android.c
endif
ifeq ($(SUPPORT_PNG),true)
LOCAL_C_INCLUDES += $(LOCAL_PATH)/$(PNG_LIBRARY_PATH)
LOCAL_CFLAGS += -DLOAD_PNG
# We can include the sources directly so the user doesn't have to...
#LOCAL_STATIC_LIBRARIES += png
LOCAL_SRC_FILES += \
$(PNG_LIBRARY_PATH)/png.c \
$(PNG_LIBRARY_PATH)/pngerror.c \
$(PNG_LIBRARY_PATH)/pngget.c \
$(PNG_LIBRARY_PATH)/pngmem.c \
$(PNG_LIBRARY_PATH)/pngpread.c \
$(PNG_LIBRARY_PATH)/pngread.c \
$(PNG_LIBRARY_PATH)/pngrio.c \
$(PNG_LIBRARY_PATH)/pngrtran.c \
$(PNG_LIBRARY_PATH)/pngrutil.c \
$(PNG_LIBRARY_PATH)/pngset.c \
$(PNG_LIBRARY_PATH)/pngtrans.c \
$(PNG_LIBRARY_PATH)/pngwio.c \
$(PNG_LIBRARY_PATH)/pngwrite.c \
$(PNG_LIBRARY_PATH)/pngwtran.c \
$(PNG_LIBRARY_PATH)/pngwutil.c
LOCAL_LDLIBS += -lz
endif
ifeq ($(SUPPORT_WEBP),true)
LOCAL_C_INCLUDES += $(LOCAL_PATH)/$(WEBP_LIBRARY_PATH)/src
LOCAL_CFLAGS += -DLOAD_WEBP
LOCAL_STATIC_LIBRARIES += webp
endif
LOCAL_EXPORT_C_INCLUDES += $(LOCAL_C_INCLUDES)
include $(BUILD_SHARED_LIBRARY)
libs/SDL2_image-2.0.0/CHANGES.txt
-114
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@@ -1,114 +0,0 @@
2.0.0:
Sam Lantinga - Sun Jun 2 22:25:31 PDT 2013
* Added PNG save support based on miniz.c by Rich Geldreich
IMG_SavePNG(), IMG_SavePNG_RW()
Sam Lantinga - Sat Jun 1 19:11:26 PDT 2013
* Updated for SDL 2.0 release
Sam Lantinga - Sat Mar 23 13:36:51 PDT 2013
* Fixed bug setting colorkey for indexed PNG images
Torsten Stremlau - Sun Mar 10 10:19:25 PDT 2013
* Added support for alpha and lossless WEBP images
1.2.12:
mscott - 2012-02-06 19:40:23 PST
* Fixed image corruption when using ImageIO framework
Sylvain - Thu Nov 22 13:09:59 PST 2012
* Added extended XPM color table (disabled by default in IMG_xpm.c)
Sam Lantinga - Thu Jan 19 23:18:09 EST 2012
* Fixed regression in 1.2.11 loading 8-bit PNG images with libpng
1.2.11:
Sam Lantinga - Sat Jan 14 17:54:38 EST 2012
* Fixed loading 8-bit PNG images on Mac OS X
Sam Lantinga - Sat Dec 31 09:35:40 EST 2011
* SDL_image is now under the zlib license
Michael Bonfils - Mon Nov 28 21:46:00 EST 2011
* Added WEBP image support
Thomas Klausner - Wed Jan 19 19:31:25 PST 2011
* Fixed compiling with libpng 1.4
Sam Lantinga - Mon Jan 10 12:09:57 2011 -0800
* Added Android.mk to build on the Android platform
Sam Lantinga - Mon May 10 22:42:53 PDT 2010
* Fixed loading HAM6 images with stencil mask
Mark Tucker - Fri, 27 Nov 2009 12:38:21 -0500
* Fixed bug loading 15 and 16 bit BMP images
1.2.10:
Sam Lantinga - Sat Nov 14 11:22:14 PST 2009
* Fixed bug loading multiple images
1.2.9:
Sam Lantinga - Tue Nov 10 00:29:20 PST 2009
* Fixed alpha premultiplication on Mac OS X and iPhone OS
Sam Lantinga - Sun Nov 8 07:52:11 PST 2009
* Fixed checking for IMG_Init() return value in image loaders
1.2.8:
Sam Lantinga - Sun Oct 4 13:12:54 PDT 2009
* Added support for uncompressed PCX files
Mason Wheeler - 2009-06-10 06:29:45 PDT
* Added IMG_Init()/IMG_Quit() to prevent constantly loading and unloading DLLs
Couriersud - Mon, 12 Jan 2009 17:21:13 -0800
* Added support for ICO and CUR image files
Eric Wing - Fri, 2 Jan 2009 02:01:16 -0800
* Added ImageIO loading infrastructure for Mac OS X
* Added UIImage loading infrastructure for iPhone / iPod Touch
1.2.7:
Sam Lantinga - Sun Nov 2 15:08:27 PST 2008
* Fixed buffer overflow in BMP loading code, discovered by j00ru//vx
Sam Lantinga - Fri Dec 28 08:34:54 PST 2007
* Fixed buffer overflow in GIF loading code, discovered by Michael Skladnikiewicz
1.2.6:
Sam lantinga - Wed Jul 18 00:30:32 PDT 2007
* Improved detection of libjpeg, libpng, and libtiff at configure time
* PNG and TIFF images are correctly identified even if dynamic libraries
to load them aren't available.
* Fixed loading of TIFF images using libtiff 3.6
Sam Lantinga - Thu Jul 5 07:52:35 2007
* Fixed static linking with libjpeg
Michael Koch - Tue Feb 13 10:09:17 2007
* Fixed crash in IMG_ReadXPMFromArray()
1.2.5:
Maurizio Monge - Sun May 14 13:57:32 PDT 2006
* Fixed loading BMP palettes at unusual offsets
Sam Lantinga - Thu May 11 21:51:19 PDT 2006
* Added support for dynamically loading libjpeg, libpng, and libtiff.
Sam Lantinga - Sun Apr 30 01:48:40 PDT 2006
* Added gcc-fat.sh for generating Universal binaries on Mac OS X
* Updated libtool support to version 1.5.22
Sam Lantinga - Sat Feb 4 15:17:44 PST 2006
* Added support for XV thumbnail images
Gautier Portet - Fri, 19 Mar 2004 17:35:12 +0100
* Added support for 32-bit BMP files with alpha
1.2.4:
Pierre G. Richard - Fri, 30 Jul 2004 11:13:11 +0000 (UTC)
* Added support for RLE encoded BMP files
Marc Le Douarain - Fri, 26 Dec 2003 18:23:42 +0100
* Added EHB and HAM mode support to the ILBM loader
Sam Lantinga - Wed Nov 19 00:23:44 PST 2003
* Updated libtool support for new mingw32 DLL build process
Holger Schemel - Mon, 04 Aug 2003 21:50:52 +0200
* Fixed crash loading certain PCX images
Kyle Davenport - Sat, 19 Apr 2003 17:13:31 -0500
* Added .la files to the development RPM, fixing RPM build on RedHat 8
1.2.3:
Ryan C. Gordon - Sat, 8 Feb 2003 09:36:33 -0500
* Fixed memory leak with non-seekable SDL_RWops
Marc Le Douarain - Sun, 22 Dec 2002 22:59:51 +0100
* Added 24-bit support to the ILBM format loader
Sam Lantinga - Sun Oct 20 20:55:46 PDT 2002
* Added shared library support for MacOS X
Pete Shinners - Thu Jun 20 10:05:54 PDT 2002
* The JPEG loader can now load EXIF format JPEG images
Dag-Erling Smorgrav - Thu May 2 19:09:48 PDT 2002
* The XCF loader now ignores invisible layers and channels
1.2.2:
Sam Lantinga - Sat Apr 13 07:49:47 PDT 2002
* Updated autogen.sh for new versions of automake
* Specify the SDL API calling convention (C by default)
libs/SDL2_image-2.0.0/CMakeLists.txt
-45
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@@ -1,45 +0,0 @@
cmake_minimum_required(VERSION 2.8)
project(SDL2_image)
set(SDL2_IMAGE_SRC
IMG.c
IMG_bmp.c
IMG_gif.c
IMG_jpg.c
IMG_lbm.c
IMG_pcx.c
IMG_png.c
IMG_pnm.c
IMG_tga.c
IMG_tif.c
#IMG_webp.c
IMG_xcf.c
IMG_xpm.c
IMG_xv.c
IMG_xxx.c
)
add_definitions(
-DLOAD_BMP
-DLOAD_GIF
-DLOAD_JPG
-DLOAD_LBM
-DLOAD_PCX
-DLOAD_PNG
-DLOAD_PNM
-DLOAD_TGA
-DLOAD_TIF
#-DLOAD_WEBP
-DLOAD_XPM
-DLOAD_XV
)
add_library(SDL2_image-static STATIC ${SDL2_IMAGE_SRC})
target_include_directories(SDL2_image-static PUBLIC .)
target_link_libraries(SDL2_image-static
${MEGA_SDL2}
${MEGA_LIBPNG}
${MEGA_TIFF}
${MEGA_JPEG}
)
libs/SDL2_image-2.0.0/COPYING.txt
-20
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@@ -1,20 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
libs/SDL2_image-2.0.0/IMG.c
-239
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@@ -1,239 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* A simple library to load images of various formats as SDL surfaces */
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "SDL_image.h"
#define ARRAYSIZE(a) (sizeof(a) / sizeof((a)[0]))
/* Table of image detection and loading functions */
static struct {
char *type;
int (SDLCALL *is)(SDL_RWops *src);
SDL_Surface *(SDLCALL *load)(SDL_RWops *src);
} supported[] = {
/* keep magicless formats first */
{ "TGA", NULL, IMG_LoadTGA_RW },
{ "CUR", IMG_isCUR, IMG_LoadCUR_RW },
{ "ICO", IMG_isICO, IMG_LoadICO_RW },
{ "BMP", IMG_isBMP, IMG_LoadBMP_RW },
{ "GIF", IMG_isGIF, IMG_LoadGIF_RW },
{ "JPG", IMG_isJPG, IMG_LoadJPG_RW },
{ "LBM", IMG_isLBM, IMG_LoadLBM_RW },
{ "PCX", IMG_isPCX, IMG_LoadPCX_RW },
{ "PNG", IMG_isPNG, IMG_LoadPNG_RW },
{ "PNM", IMG_isPNM, IMG_LoadPNM_RW }, /* P[BGP]M share code */
{ "TIF", IMG_isTIF, IMG_LoadTIF_RW },
{ "XCF", IMG_isXCF, IMG_LoadXCF_RW },
{ "XPM", IMG_isXPM, IMG_LoadXPM_RW },
{ "XV", IMG_isXV, IMG_LoadXV_RW },
{ "WEBP", IMG_isWEBP, IMG_LoadWEBP_RW },
};
const SDL_version *IMG_Linked_Version(void)
{
static SDL_version linked_version;
SDL_IMAGE_VERSION(&linked_version);
return(&linked_version);
}
extern int IMG_InitJPG();
extern void IMG_QuitJPG();
extern int IMG_InitPNG();
extern void IMG_QuitPNG();
extern int IMG_InitTIF();
extern void IMG_QuitTIF();
extern int IMG_InitWEBP();
extern void IMG_QuitWEBP();
static int initialized = 0;
int IMG_Init(int flags)
{
int result = 0;
if (flags & IMG_INIT_JPG) {
if ((initialized & IMG_INIT_JPG) || IMG_InitJPG() == 0) {
result |= IMG_INIT_JPG;
}
}
if (flags & IMG_INIT_PNG) {
if ((initialized & IMG_INIT_PNG) || IMG_InitPNG() == 0) {
result |= IMG_INIT_PNG;
}
}
if (flags & IMG_INIT_TIF) {
if ((initialized & IMG_INIT_TIF) || IMG_InitTIF() == 0) {
result |= IMG_INIT_TIF;
}
}
if (flags & IMG_INIT_WEBP) {
if ((initialized & IMG_INIT_WEBP) || IMG_InitWEBP() == 0) {
result |= IMG_INIT_WEBP;
}
}
initialized |= result;
return (initialized);
}
void IMG_Quit()
{
if (initialized & IMG_INIT_JPG) {
IMG_QuitJPG();
}
if (initialized & IMG_INIT_PNG) {
IMG_QuitPNG();
}
if (initialized & IMG_INIT_TIF) {
IMG_QuitTIF();
}
if (initialized & IMG_INIT_WEBP) {
IMG_QuitWEBP();
}
initialized = 0;
}
#if !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)
/* Load an image from a file */
SDL_Surface *IMG_Load(const char *file)
{
SDL_RWops *src = SDL_RWFromFile(file, "rb");
const char *ext = strrchr(file, '.');
if(ext) {
ext++;
}
if(!src) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
return IMG_LoadTyped_RW(src, 1, ext);
}
#endif
/* Load an image from an SDL datasource (for compatibility) */
SDL_Surface *IMG_Load_RW(SDL_RWops *src, int freesrc)
{
return IMG_LoadTyped_RW(src, freesrc, NULL);
}
/* Portable case-insensitive string compare function */
static int IMG_string_equals(const char *str1, const char *str2)
{
while ( *str1 && *str2 ) {
if ( toupper((unsigned char)*str1) !=
toupper((unsigned char)*str2) )
break;
++str1;
++str2;
}
return (!*str1 && !*str2);
}
/* Load an image from an SDL datasource, optionally specifying the type */
SDL_Surface *IMG_LoadTyped_RW(SDL_RWops *src, int freesrc, const char *type)
{
int i;
SDL_Surface *image;
/* Make sure there is something to do.. */
if ( src == NULL ) {
IMG_SetError("Passed a NULL data source");
return(NULL);
}
/* See whether or not this data source can handle seeking */
if ( SDL_RWseek(src, 0, RW_SEEK_CUR) < 0 ) {
IMG_SetError("Can't seek in this data source");
if(freesrc)
SDL_RWclose(src);
return(NULL);
}
/* Detect the type of image being loaded */
image = NULL;
for ( i=0; i < ARRAYSIZE(supported); ++i ) {
if(supported[i].is) {
if(!supported[i].is(src))
continue;
} else {
/* magicless format */
if(!type
|| !IMG_string_equals(type, supported[i].type))
continue;
}
#ifdef DEBUG_IMGLIB
fprintf(stderr, "IMGLIB: Loading image as %s\n",
supported[i].type);
#endif
image = supported[i].load(src);
if(freesrc)
SDL_RWclose(src);
return image;
}
if ( freesrc ) {
SDL_RWclose(src);
}
IMG_SetError("Unsupported image format");
return NULL;
}
#if SDL_VERSION_ATLEAST(2,0,0)
SDL_Texture *IMG_LoadTexture(SDL_Renderer *renderer, const char *file)
{
SDL_Texture *texture = NULL;
SDL_Surface *surface = IMG_Load(file);
if (surface) {
texture = SDL_CreateTextureFromSurface(renderer, surface);
SDL_FreeSurface(surface);
}
return texture;
}
SDL_Texture *IMG_LoadTexture_RW(SDL_Renderer *renderer, SDL_RWops *src, int freesrc)
{
SDL_Texture *texture = NULL;
SDL_Surface *surface = IMG_Load_RW(src, freesrc);
if (surface) {
texture = SDL_CreateTextureFromSurface(renderer, surface);
SDL_FreeSurface(surface);
}
return texture;
}
SDL_Texture *IMG_LoadTextureTyped_RW(SDL_Renderer *renderer, SDL_RWops *src, int freesrc, const char *type)
{
SDL_Texture *texture = NULL;
SDL_Surface *surface = IMG_LoadTyped_RW(src, freesrc, type);
if (surface) {
texture = SDL_CreateTextureFromSurface(renderer, surface);
SDL_FreeSurface(surface);
}
return texture;
}
#endif /* SDL 2.0 */
libs/SDL2_image-2.0.0/IMG_ImageIO.m
-803
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@@ -1,803 +0,0 @@
/*
* IMG_ImageIO.c
* SDL_image
*
* Created by Eric Wing on 1/1/09.
* Copyright 2009 __MyCompanyName__. All rights reserved.
*
*/
#if defined(__APPLE__) && !defined(SDL_IMAGE_USE_COMMON_BACKEND)
#include "SDL_image.h"
// Used because CGDataProviderCreate became deprecated in 10.5
#include <AvailabilityMacros.h>
#include <TargetConditionals.h>
#include <Foundation/Foundation.h>
#if (TARGET_OS_IPHONE == 1) || (TARGET_IPHONE_SIMULATOR == 1)
#ifdef ALLOW_UIIMAGE_FALLBACK
#define USE_UIIMAGE_BACKEND() ([UIImage instancesRespondToSelector:@selector(initWithCGImage:scale:orientation:)] == NO)
#else
#define USE_UIIMAGE_BACKEND() (Internal_checkImageIOisAvailable())
#endif
#import <MobileCoreServices/MobileCoreServices.h> // for UTCoreTypes.h
#import <ImageIO/ImageIO.h>
#import <UIKit/UIImage.h>
#else
// For ImageIO framework and also LaunchServices framework (for UTIs)
#include <ApplicationServices/ApplicationServices.h>
#endif
/**************************************************************
***** Begin Callback functions for block reading *************
**************************************************************/
// This callback reads some bytes from an SDL_rwops and copies it
// to a Quartz buffer (supplied by Apple framework).
static size_t MyProviderGetBytesCallback(void* rwops_userdata, void* quartz_buffer, size_t the_count)
{
return (size_t)SDL_RWread((struct SDL_RWops *)rwops_userdata, quartz_buffer, 1, the_count);
}
// This callback is triggered when the data provider is released
// so you can clean up any resources.
static void MyProviderReleaseInfoCallback(void* rwops_userdata)
{
// What should I put here?
// I think the user and SDL_RWops controls closing, so I don't do anything.
}
static void MyProviderRewindCallback(void* rwops_userdata)
{
SDL_RWseek((struct SDL_RWops *)rwops_userdata, 0, RW_SEEK_SET);
}
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1050 // CGDataProviderCreateSequential was introduced in 10.5; CGDataProviderCreate is deprecated
off_t MyProviderSkipForwardBytesCallback(void* rwops_userdata, off_t the_count)
{
off_t start_position = SDL_RWtell((struct SDL_RWops *)rwops_userdata);
SDL_RWseek((struct SDL_RWops *)rwops_userdata, the_count, RW_SEEK_CUR);
off_t end_position = SDL_RWtell((struct SDL_RWops *)rwops_userdata);
return (end_position - start_position);
}
#else // CGDataProviderCreate was deprecated in 10.5
static void MyProviderSkipBytesCallback(void* rwops_userdata, size_t the_count)
{
SDL_RWseek((struct SDL_RWops *)rwops_userdata, the_count, RW_SEEK_CUR);
}
#endif
/**************************************************************
***** End Callback functions for block reading ***************
**************************************************************/
// This creates a CGImageSourceRef which is a handle to an image that can be used to examine information
// about the image or load the actual image data.
static CGImageSourceRef CreateCGImageSourceFromRWops(SDL_RWops* rw_ops, CFDictionaryRef hints_and_options)
{
CGImageSourceRef source_ref;
// Similar to SDL_RWops, Apple has their own callbacks for dealing with data streams.
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1050 // CGDataProviderCreateSequential was introduced in 10.5; CGDataProviderCreate is deprecated
CGDataProviderSequentialCallbacks provider_callbacks =
{
0,
MyProviderGetBytesCallback,
MyProviderSkipForwardBytesCallback,
MyProviderRewindCallback,
MyProviderReleaseInfoCallback
};
CGDataProviderRef data_provider = CGDataProviderCreateSequential(rw_ops, &provider_callbacks);
#else // CGDataProviderCreate was deprecated in 10.5
CGDataProviderCallbacks provider_callbacks =
{
MyProviderGetBytesCallback,
MyProviderSkipBytesCallback,
MyProviderRewindCallback,
MyProviderReleaseInfoCallback
};
CGDataProviderRef data_provider = CGDataProviderCreate(rw_ops, &provider_callbacks);
#endif
// Get the CGImageSourceRef.
// The dictionary can be NULL or contain hints to help ImageIO figure out the image type.
source_ref = CGImageSourceCreateWithDataProvider(data_provider, hints_and_options);
CGDataProviderRelease(data_provider);
return source_ref;
}
/* Create a CGImageSourceRef from a file. */
/* Remember to CFRelease the created source when done. */
static CGImageSourceRef CreateCGImageSourceFromFile(const char* the_path)
{
CFURLRef the_url = NULL;
CGImageSourceRef source_ref = NULL;
CFStringRef cf_string = NULL;
/* Create a CFString from a C string */
cf_string = CFStringCreateWithCString(NULL, the_path, kCFStringEncodingUTF8);
if (!cf_string) {
return NULL;
}
/* Create a CFURL from a CFString */
the_url = CFURLCreateWithFileSystemPath(NULL, cf_string, kCFURLPOSIXPathStyle, false);
/* Don't need the CFString any more (error or not) */
CFRelease(cf_string);
if(!the_url)
{
return NULL;
}
source_ref = CGImageSourceCreateWithURL(the_url, NULL);
/* Don't need the URL any more (error or not) */
CFRelease(the_url);
return source_ref;
}
static CGImageRef CreateCGImageFromCGImageSource(CGImageSourceRef image_source)
{
CGImageRef image_ref = NULL;
if(NULL == image_source)
{
return NULL;
}
// Get the first item in the image source (some image formats may
// contain multiple items).
image_ref = CGImageSourceCreateImageAtIndex(image_source, 0, NULL);
if(NULL == image_ref)
{
IMG_SetError("CGImageSourceCreateImageAtIndex() failed");
}
return image_ref;
}
static CFDictionaryRef CreateHintDictionary(CFStringRef uti_string_hint)
{
CFDictionaryRef hint_dictionary = NULL;
if(uti_string_hint != NULL)
{
// Do a bunch of work to setup a CFDictionary containing the jpeg compression properties.
CFStringRef the_keys[1];
CFStringRef the_values[1];
the_keys[0] = kCGImageSourceTypeIdentifierHint;
the_values[0] = uti_string_hint;
// kCFTypeDictionaryKeyCallBacks or kCFCopyStringDictionaryKeyCallBacks?
hint_dictionary = CFDictionaryCreate(NULL, (const void**)&the_keys, (const void**)&the_values, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
}
return hint_dictionary;
}
// Once we have our image, we need to get it into an SDL_Surface
static SDL_Surface* Create_SDL_Surface_From_CGImage_RGB(CGImageRef image_ref)
{
/* This code is adapted from Apple's Documentation found here:
* http://developer.apple.com/documentation/GraphicsImaging/Conceptual/OpenGL-MacProgGuide/index.html
* Listing 9-4††Using a Quartz image as a texture source.
* Unfortunately, this guide doesn't show what to do about
* non-RGBA image formats so I'm making the rest up.
* All this code should be scrutinized.
*/
size_t w = CGImageGetWidth(image_ref);
size_t h = CGImageGetHeight(image_ref);
CGRect rect = {{0, 0}, {w, h}};
CGImageAlphaInfo alpha = CGImageGetAlphaInfo(image_ref);
//size_t bits_per_pixel = CGImageGetBitsPerPixel(image_ref);
size_t bits_per_component = 8;
SDL_Surface* surface;
Uint32 Amask;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
CGContextRef bitmap_context;
CGBitmapInfo bitmap_info;
/* This sets up a color space that results in identical values
* as the image data itself, which is the same as the standalone
* libpng loader.
* Thanks to Allegro. :)
*/
CGFloat whitePoint[3] = { 0.950, 1.000, 1.089 };
CGFloat blackPoint[3] = { 0.000, 0.000, 0.000 };
CGFloat gamma[3] = { 2.2, 2.2, 2.2 };
CGFloat matrix[9] = {
0.412, 0.213, 0.019,
0.358, 0.715, 0.119,
0.180, 0.072, 0.950
};
CGColorSpaceRef color_space =
CGColorSpaceCreateCalibratedRGB(
whitePoint, blackPoint, gamma, matrix
);
if (alpha == kCGImageAlphaNone ||
alpha == kCGImageAlphaNoneSkipFirst ||
alpha == kCGImageAlphaNoneSkipLast) {
bitmap_info = kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder32Host; /* XRGB */
Amask = 0x00000000;
} else {
/* kCGImageAlphaFirst isn't supported */
//bitmap_info = kCGImageAlphaFirst | kCGBitmapByteOrder32Host; /* ARGB */
bitmap_info = kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host; /* ARGB */
Amask = 0xFF000000;
}
Rmask = 0x00FF0000;
Gmask = 0x0000FF00;
Bmask = 0x000000FF;
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 32, Rmask, Gmask, Bmask, Amask);
if (surface)
{
// Sets up a context to be drawn to with surface->pixels as the area to be drawn to
bitmap_context = CGBitmapContextCreate(
surface->pixels,
surface->w,
surface->h,
bits_per_component,
surface->pitch,
color_space,
bitmap_info
);
// Draws the image into the context's image_data
CGContextDrawImage(bitmap_context, rect, image_ref);
CGContextRelease(bitmap_context);
// FIXME: Reverse the premultiplied alpha
if ((bitmap_info & kCGBitmapAlphaInfoMask) == kCGImageAlphaPremultipliedFirst) {
int i, j;
Uint8 *p = (Uint8 *)surface->pixels;
for (i = surface->h * surface->pitch/4; i--; ) {
#if __LITTLE_ENDIAN__
Uint8 A = p[3];
if (A) {
for (j = 0; j < 3; ++j) {
p[j] = (p[j] * 255) / A;
}
}
#else
Uint8 A = p[0];
if (A) {
for (j = 1; j < 4; ++j) {
p[j] = (p[j] * 255) / A;
}
}
#endif /* ENDIAN */
p += 4;
}
}
}
if (color_space)
{
CGColorSpaceRelease(color_space);
}
return surface;
}
static SDL_Surface* Create_SDL_Surface_From_CGImage_Index(CGImageRef image_ref)
{
size_t w = CGImageGetWidth(image_ref);
size_t h = CGImageGetHeight(image_ref);
size_t bits_per_pixel = CGImageGetBitsPerPixel(image_ref);
size_t bytes_per_row = CGImageGetBytesPerRow(image_ref);
SDL_Surface* surface;
SDL_Palette* palette;
CGColorSpaceRef color_space = CGImageGetColorSpace(image_ref);
CGColorSpaceRef base_color_space = CGColorSpaceGetBaseColorSpace(color_space);
size_t num_components = CGColorSpaceGetNumberOfComponents(base_color_space);
size_t num_entries = CGColorSpaceGetColorTableCount(color_space);
uint8_t *entry, entries[num_components * num_entries];
/* What do we do if it's not RGB? */
if (num_components != 3) {
SDL_SetError("Unknown colorspace components %lu", num_components);
return NULL;
}
if (bits_per_pixel != 8) {
SDL_SetError("Unknown bits_per_pixel %lu", bits_per_pixel);
return NULL;
}
CGColorSpaceGetColorTable(color_space, entries);
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, bits_per_pixel, 0, 0, 0, 0);
if (surface) {
uint8_t* pixels = (uint8_t*)surface->pixels;
CGDataProviderRef provider = CGImageGetDataProvider(image_ref);
NSData* data = (id)CGDataProviderCopyData(provider);
[data autorelease];
const uint8_t* bytes = [data bytes];
size_t i;
palette = surface->format->palette;
for (i = 0, entry = entries; i < num_entries; ++i) {
palette->colors[i].r = entry[0];
palette->colors[i].g = entry[1];
palette->colors[i].b = entry[2];
entry += num_components;
}
for (i = 0; i < h; ++i) {
SDL_memcpy(pixels, bytes, w);
pixels += surface->pitch;
bytes += bytes_per_row;
}
}
return surface;
}
static SDL_Surface* Create_SDL_Surface_From_CGImage(CGImageRef image_ref)
{
CGColorSpaceRef color_space = CGImageGetColorSpace(image_ref);
if (CGColorSpaceGetModel(color_space) == kCGColorSpaceModelIndexed) {
return Create_SDL_Surface_From_CGImage_Index(image_ref);
} else {
return Create_SDL_Surface_From_CGImage_RGB(image_ref);
}
}
#pragma mark -
#pragma mark IMG_Init stubs
#if !defined(ALLOW_UIIMAGE_FALLBACK) && ((TARGET_OS_IPHONE == 1) || (TARGET_IPHONE_SIMULATOR == 1))
static int Internal_checkImageIOisAvailable() {
// just check if we are running on ios 4 or more, else throw exception
if ([UIImage instancesRespondToSelector:@selector(initWithCGImage:scale:orientation:)])
return 0;
[NSException raise:@"UIImage fallback not enabled at compile time"
format:@"ImageIO is not available on your platform, please recompile SDL_Image with ALLOW_UIIMAGE_FALLBACK."];
return -1;
}
#endif
int IMG_InitJPG()
{
return 0;
}
void IMG_QuitJPG()
{
}
int IMG_InitPNG()
{
return 0;
}
void IMG_QuitPNG()
{
}
int IMG_InitTIF()
{
return 0;
}
void IMG_QuitTIF()
{
}
#pragma mark -
#pragma mark Get type of image
static int Internal_isType_UIImage (SDL_RWops *rw_ops, CFStringRef uti_string_to_test)
{
int is_type = 0;
#if defined(ALLOW_UIIMAGE_FALLBACK) && ((TARGET_OS_IPHONE == 1) || (TARGET_IPHONE_SIMULATOR == 1))
int start = SDL_RWtell(rw_ops);
if ((0 == CFStringCompare(uti_string_to_test, kUTTypeICO, 0)) ||
(0 == CFStringCompare(uti_string_to_test, CFSTR("com.microsoft.cur"), 0))) {
// The Win32 ICO file header (14 bytes)
Uint16 bfReserved;
Uint16 bfType;
Uint16 bfCount;
int type = (0 == CFStringCompare(uti_string_to_test, kUTTypeICO, 0)) ? 1 : 2;
bfReserved = SDL_ReadLE16(rw_ops);
bfType = SDL_ReadLE16(rw_ops);
bfCount = SDL_ReadLE16(rw_ops);
if ((bfReserved == 0) && (bfType == type) && (bfCount != 0))
is_type = 1;
} else if (0 == CFStringCompare(uti_string_to_test, kUTTypeBMP, 0)) {
char magic[2];
if ( SDL_RWread(rw_ops, magic, sizeof(magic), 1) ) {
if ( strncmp(magic, "BM", 2) == 0 ) {
is_type = 1;
}
}
} else if (0 == CFStringCompare(uti_string_to_test, kUTTypeGIF, 0)) {
char magic[6];
if ( SDL_RWread(rw_ops, magic, sizeof(magic), 1) ) {
if ( (strncmp(magic, "GIF", 3) == 0) &&
((memcmp(magic + 3, "87a", 3) == 0) ||
(memcmp(magic + 3, "89a", 3) == 0)) ) {
is_type = 1;
}
}
} else if (0 == CFStringCompare(uti_string_to_test, kUTTypeJPEG, 0)) {
int in_scan = 0;
Uint8 magic[4];
// This detection code is by Steaphan Greene <stea@cs.binghamton.edu>
// Blame me, not Sam, if this doesn't work right. */
// And don't forget to report the problem to the the sdl list too! */
if ( SDL_RWread(rw_ops, magic, 2, 1) ) {
if ( (magic[0] == 0xFF) && (magic[1] == 0xD8) ) {
is_type = 1;
while (is_type == 1) {
if(SDL_RWread(rw_ops, magic, 1, 2) != 2) {
is_type = 0;
} else if( (magic[0] != 0xFF) && (in_scan == 0) ) {
is_type = 0;
} else if( (magic[0] != 0xFF) || (magic[1] == 0xFF) ) {
/* Extra padding in JPEG (legal) */
/* or this is data and we are scanning */
SDL_RWseek(rw_ops, -1, SEEK_CUR);
} else if(magic[1] == 0xD9) {
/* Got to end of good JPEG */
break;
} else if( (in_scan == 1) && (magic[1] == 0x00) ) {
/* This is an encoded 0xFF within the data */
} else if( (magic[1] >= 0xD0) && (magic[1] < 0xD9) ) {
/* These have nothing else */
} else if(SDL_RWread(rw_ops, magic+2, 1, 2) != 2) {
is_type = 0;
} else {
/* Yes, it's big-endian */
Uint32 start;
Uint32 size;
Uint32 end;
start = SDL_RWtell(rw_ops);
size = (magic[2] << 8) + magic[3];
end = SDL_RWseek(rw_ops, size-2, SEEK_CUR);
if ( end != start + size - 2 ) is_type = 0;
if ( magic[1] == 0xDA ) {
/* Now comes the actual JPEG meat */
#ifdef FAST_IS_JPEG
/* Ok, I'm convinced. It is a JPEG. */
break;
#else
/* I'm not convinced. Prove it! */
in_scan = 1;
#endif
}
}
}
}
}
} else if (0 == CFStringCompare(uti_string_to_test, kUTTypePNG, 0)) {
Uint8 magic[4];
if ( SDL_RWread(rw_ops, magic, 1, sizeof(magic)) == sizeof(magic) ) {
if ( magic[0] == 0x89 &&
magic[1] == 'P' &&
magic[2] == 'N' &&
magic[3] == 'G' ) {
is_type = 1;
}
}
} else if (0 == CFStringCompare(uti_string_to_test, CFSTR("com.truevision.tga-image"), 0)) {
//TODO: fill me!
} else if (0 == CFStringCompare(uti_string_to_test, kUTTypeTIFF, 0)) {
Uint8 magic[4];
if ( SDL_RWread(rw_ops, magic, 1, sizeof(magic)) == sizeof(magic) ) {
if ( (magic[0] == 'I' &&
magic[1] == 'I' &&
magic[2] == 0x2a &&
magic[3] == 0x00) ||
(magic[0] == 'M' &&
magic[1] == 'M' &&
magic[2] == 0x00 &&
magic[3] == 0x2a) ) {
is_type = 1;
}
}
}
// reset the file descption pointer
SDL_RWseek(rw_ops, start, SEEK_SET);
#endif /* #if defined(ALLOW_UIIMAGE_FALLBACK) && ((TARGET_OS_IPHONE == 1) || (TARGET_IPHONE_SIMULATOR == 1)) */
return is_type;
}
static int Internal_isType_ImageIO (SDL_RWops *rw_ops, CFStringRef uti_string_to_test)
{
int is_type = 0;
CFDictionaryRef hint_dictionary = CreateHintDictionary(uti_string_to_test);
CGImageSourceRef image_source = CreateCGImageSourceFromRWops(rw_ops, hint_dictionary);
if (hint_dictionary != NULL) {
CFRelease(hint_dictionary);
}
if (NULL == image_source) {
return 0;
}
// This will get the UTI of the container, not the image itself.
// Under most cases, this won't be a problem.
// But if a person passes an icon file which contains a bmp,
// the format will be of the icon file.
// But I think the main SDL_image codebase has this same problem so I'm not going to worry about it.
CFStringRef uti_type = CGImageSourceGetType(image_source);
// CFShow(uti_type);
// Unsure if we really want conformance or equality
is_type = (int)UTTypeConformsTo(uti_string_to_test, uti_type);
CFRelease(image_source);
return is_type;
}
static int Internal_isType (SDL_RWops *rw_ops, CFStringRef uti_string_to_test)
{
if (rw_ops == NULL)
return 0;
#if (TARGET_OS_IPHONE == 1) || (TARGET_IPHONE_SIMULATOR == 1)
if (USE_UIIMAGE_BACKEND())
return Internal_isType_UIImage(rw_ops, uti_string_to_test);
else
#endif
return Internal_isType_ImageIO(rw_ops, uti_string_to_test);
}
#ifdef BMP_USES_IMAGEIO
int IMG_isCUR(SDL_RWops *src)
{
/* FIXME: Is this a supported type? */
return Internal_isType(src, CFSTR("com.microsoft.cur"));
}
int IMG_isICO(SDL_RWops *src)
{
return Internal_isType(src, kUTTypeICO);
}
int IMG_isBMP(SDL_RWops *src)
{
return Internal_isType(src, kUTTypeBMP);
}
#endif /* BMP_USES_IMAGEIO */
int IMG_isGIF(SDL_RWops *src)
{
return Internal_isType(src, kUTTypeGIF);
}
// Note: JPEG 2000 is kUTTypeJPEG2000
int IMG_isJPG(SDL_RWops *src)
{
return Internal_isType(src, kUTTypeJPEG);
}
int IMG_isPNG(SDL_RWops *src)
{
return Internal_isType(src, kUTTypePNG);
}
// This isn't a public API function. Apple seems to be able to identify tga's.
int IMG_isTGA(SDL_RWops *src)
{
return Internal_isType(src, CFSTR("com.truevision.tga-image"));
}
int IMG_isTIF(SDL_RWops *src)
{
return Internal_isType(src, kUTTypeTIFF);
}
#pragma mark -
#pragma mark Load image engine
static SDL_Surface *LoadImageFromRWops_UIImage (SDL_RWops* rw_ops, CFStringRef uti_string_hint)
{
SDL_Surface *sdl_surface = NULL;
#if defined(ALLOW_UIIMAGE_FALLBACK) && ((TARGET_OS_IPHONE == 1) || (TARGET_IPHONE_SIMULATOR == 1))
NSAutoreleasePool* autorelease_pool = [[NSAutoreleasePool alloc] init];
UIImage *ui_image;
int bytes_read = 0;
// I don't know what a good size is.
// Max recommended texture size is 1024x1024 on iPhone so maybe base it on that?
const int block_size = 1024*4;
char temp_buffer[block_size];
NSMutableData* ns_data = [[NSMutableData alloc] initWithCapacity:1024*1024*4];
do {
bytes_read = SDL_RWread(rw_ops, temp_buffer, 1, block_size);
[ns_data appendBytes:temp_buffer length:bytes_read];
} while (bytes_read > 0);
ui_image = [[UIImage alloc] initWithData:ns_data];
if (ui_image != nil)
sdl_surface = Create_SDL_Surface_From_CGImage([ui_image CGImage]);
[ui_image release];
[ns_data release];
[autorelease_pool drain];
#endif /* #if defined(ALLOW_UIIMAGE_FALLBACK) && ((TARGET_OS_IPHONE == 1) || (TARGET_IPHONE_SIMULATOR == 1)) */
return sdl_surface;
}
static SDL_Surface *LoadImageFromRWops_ImageIO (SDL_RWops *rw_ops, CFStringRef uti_string_hint)
{
CFDictionaryRef hint_dictionary = CreateHintDictionary(uti_string_hint);
CGImageSourceRef image_source = CreateCGImageSourceFromRWops(rw_ops, hint_dictionary);
if (hint_dictionary != NULL)
CFRelease(hint_dictionary);
if (NULL == image_source)
return NULL;
CGImageRef image_ref = CreateCGImageFromCGImageSource(image_source);
CFRelease(image_source);
if (NULL == image_ref)
return NULL;
SDL_Surface *sdl_surface = Create_SDL_Surface_From_CGImage(image_ref);
CFRelease(image_ref);
return sdl_surface;
}
static SDL_Surface *LoadImageFromRWops (SDL_RWops *rw_ops, CFStringRef uti_string_hint)
{
#if (TARGET_OS_IPHONE == 1) || (TARGET_IPHONE_SIMULATOR == 1)
if (USE_UIIMAGE_BACKEND())
return LoadImageFromRWops_UIImage(rw_ops, uti_string_hint);
else
#endif
return LoadImageFromRWops_ImageIO(rw_ops, uti_string_hint);
}
static SDL_Surface* LoadImageFromFile_UIImage (const char *file)
{
SDL_Surface *sdl_surface = NULL;
#if defined(ALLOW_UIIMAGE_FALLBACK) && ((TARGET_OS_IPHONE == 1) || (TARGET_IPHONE_SIMULATOR == 1))
NSAutoreleasePool* autorelease_pool = [[NSAutoreleasePool alloc] init];
NSString *ns_string = [[NSString alloc] initWithUTF8String:file];
UIImage *ui_image = [[UIImage alloc] initWithContentsOfFile:ns_string];
if (ui_image != nil)
sdl_surface = Create_SDL_Surface_From_CGImage([ui_image CGImage]);
[ui_image release];
[ns_string release];
[autorelease_pool drain];
#endif /* #if defined(ALLOW_UIIMAGE_FALLBACK) && ((TARGET_OS_IPHONE == 1) || (TARGET_IPHONE_SIMULATOR == 1)) */
return sdl_surface;
}
static SDL_Surface* LoadImageFromFile_ImageIO (const char *file)
{
CGImageSourceRef image_source = NULL;
image_source = CreateCGImageSourceFromFile(file);
if(NULL == image_source)
return NULL;
CGImageRef image_ref = CreateCGImageFromCGImageSource(image_source);
CFRelease(image_source);
if (NULL == image_ref)
return NULL;
SDL_Surface *sdl_surface = Create_SDL_Surface_From_CGImage(image_ref);
CFRelease(image_ref);
return sdl_surface;
}
static SDL_Surface* LoadImageFromFile (const char *file)
{
#if (TARGET_OS_IPHONE == 1) || (TARGET_IPHONE_SIMULATOR == 1)
if (USE_UIIMAGE_BACKEND())
return LoadImageFromFile_UIImage(file);
else
#endif
return LoadImageFromFile_ImageIO(file);
}
#ifdef BMP_USES_IMAGEIO
SDL_Surface* IMG_LoadCUR_RW (SDL_RWops *src)
{
/* FIXME: Is this a supported type? */
return LoadImageFromRWops(src, CFSTR("com.microsoft.cur"));
}
SDL_Surface* IMG_LoadICO_RW (SDL_RWops *src)
{
return LoadImageFromRWops(src, kUTTypeICO);
}
SDL_Surface* IMG_LoadBMP_RW (SDL_RWops *src)
{
return LoadImageFromRWops(src, kUTTypeBMP);
}
#endif /* BMP_USES_IMAGEIO */
SDL_Surface* IMG_LoadGIF_RW (SDL_RWops *src)
{
return LoadImageFromRWops (src, kUTTypeGIF);
}
SDL_Surface* IMG_LoadJPG_RW (SDL_RWops *src)
{
return LoadImageFromRWops (src, kUTTypeJPEG);
}
SDL_Surface* IMG_LoadPNG_RW (SDL_RWops *src)
{
return LoadImageFromRWops (src, kUTTypePNG);
}
SDL_Surface* IMG_LoadTGA_RW (SDL_RWops *src)
{
return LoadImageFromRWops(src, CFSTR("com.truevision.tga-image"));
}
SDL_Surface* IMG_LoadTIF_RW (SDL_RWops *src)
{
return LoadImageFromRWops(src, kUTTypeTIFF);
}
// Since UIImage doesn't really support streams well, we should optimize for the file case.
// Apple provides both stream and file loading functions in ImageIO.
// Potentially, Apple can optimize for either case.
SDL_Surface* IMG_Load (const char *file)
{
SDL_Surface* sdl_surface = NULL;
sdl_surface = LoadImageFromFile(file);
if(NULL == sdl_surface)
{
// Either the file doesn't exist or ImageIO doesn't understand the format.
// For the latter case, fallback to the native SDL_image handlers.
SDL_RWops *src = SDL_RWFromFile(file, "rb");
char *ext = strrchr(file, '.');
if (ext) {
ext++;
}
if (!src) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
sdl_surface = IMG_LoadTyped_RW(src, 1, ext);
}
return sdl_surface;
}
#endif /* defined(__APPLE__) && !defined(SDL_IMAGE_USE_COMMON_BACKEND) */
libs/SDL2_image-2.0.0/IMG_UIImage.m
-440
View File
@@ -1,440 +0,0 @@
/*
* IMG_ImageIO.c
* SDL_image
*
* Created by Eric Wing on 1/2/09.
* Copyright 2009 __MyCompanyName__. All rights reserved.
*
*/
#include "SDL_image.h"
#import <UIKit/UIKit.h>
#import <MobileCoreServices/MobileCoreServices.h> // for UTCoreTypes.h
// Once we have our image, we need to get it into an SDL_Surface
// (Copied straight from the ImageIO backend.)
static SDL_Surface* Create_SDL_Surface_From_CGImage(CGImageRef image_ref)
{
/* This code is adapted from Apple's Documentation found here:
* http://developer.apple.com/documentation/GraphicsImaging/Conceptual/OpenGL-MacProgGuide/index.html
* Listing 9-4††Using a Quartz image as a texture source.
* Unfortunately, this guide doesn't show what to do about
* non-RGBA image formats so I'm making the rest up.
* All this code should be scrutinized.
*/
size_t w = CGImageGetWidth(image_ref);
size_t h = CGImageGetHeight(image_ref);
CGRect rect = {{0, 0}, {w, h}};
CGImageAlphaInfo alpha = CGImageGetAlphaInfo(image_ref);
//size_t bits_per_pixel = CGImageGetBitsPerPixel(image_ref);
size_t bits_per_component = 8;
SDL_Surface* surface;
Uint32 Amask;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
CGContextRef bitmap_context;
CGBitmapInfo bitmap_info;
CGColorSpaceRef color_space = CGColorSpaceCreateDeviceRGB();
if (alpha == kCGImageAlphaNone ||
alpha == kCGImageAlphaNoneSkipFirst ||
alpha == kCGImageAlphaNoneSkipLast) {
bitmap_info = kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder32Host; /* XRGB */
Amask = 0x00000000;
} else {
/* kCGImageAlphaFirst isn't supported */
//bitmap_info = kCGImageAlphaFirst | kCGBitmapByteOrder32Host; /* ARGB */
bitmap_info = kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host; /* ARGB */
Amask = 0xFF000000;
}
Rmask = 0x00FF0000;
Gmask = 0x0000FF00;
Bmask = 0x000000FF;
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 32, Rmask, Gmask, Bmask, Amask);
if (surface)
{
// Sets up a context to be drawn to with surface->pixels as the area to be drawn to
bitmap_context = CGBitmapContextCreate(
surface->pixels,
surface->w,
surface->h,
bits_per_component,
surface->pitch,
color_space,
bitmap_info
);
// Draws the image into the context's image_data
CGContextDrawImage(bitmap_context, rect, image_ref);
CGContextRelease(bitmap_context);
// FIXME: Reverse the premultiplied alpha
if ((bitmap_info & kCGBitmapAlphaInfoMask) == kCGImageAlphaPremultipliedFirst) {
int i, j;
Uint8 *p = (Uint8 *)surface->pixels;
for (i = surface->h * surface->pitch/4; i--; ) {
#if __LITTLE_ENDIAN__
Uint8 A = p[3];
if (A) {
for (j = 0; j < 3; ++j) {
p[j] = (p[j] * 255) / A;
}
}
#else
Uint8 A = p[0];
if (A) {
for (j = 1; j < 4; ++j) {
p[j] = (p[j] * 255) / A;
}
}
#endif /* ENDIAN */
p += 4;
}
}
}
if (color_space)
{
CGColorSpaceRelease(color_space);
}
return surface;
}
static SDL_Surface* LoadImageFromRWops(SDL_RWops* rw_ops, CFStringRef uti_string_hint)
{
NSAutoreleasePool* autorelease_pool = [[NSAutoreleasePool alloc] init];
SDL_Surface* sdl_surface;
UIImage* ui_image;
int bytes_read = 0;
// I don't know what a good size is.
// Max recommended texture size is 1024x1024 on iPhone so maybe base it on that?
const int block_size = 1024*4;
char temp_buffer[block_size];
NSMutableData* ns_data = [[NSMutableData alloc] initWithCapacity:1024*1024*4];
do
{
bytes_read = SDL_RWread(rw_ops, temp_buffer, 1, block_size);
[ns_data appendBytes:temp_buffer length:bytes_read];
} while(bytes_read > 0);
ui_image = [[UIImage alloc] initWithData:ns_data];
sdl_surface = Create_SDL_Surface_From_CGImage([ui_image CGImage]);
[ui_image release];
[ns_data release];
[autorelease_pool drain];
return sdl_surface;
}
static SDL_Surface* LoadImageFromFile(const char *file)
{
NSAutoreleasePool* autorelease_pool = [[NSAutoreleasePool alloc] init];
SDL_Surface* sdl_surface = NULL;
UIImage* ui_image;
NSString* ns_string;
ns_string = [[NSString alloc] initWithUTF8String:file];
ui_image = [[UIImage alloc] initWithContentsOfFile:ns_string];
if(ui_image != NULL)
{
sdl_surface = Create_SDL_Surface_From_CGImage([ui_image CGImage]);
}
[ui_image release];
[ns_string release];
[autorelease_pool drain];
return sdl_surface;
}
/* Since UIImage doesn't really support streams well, we should optimize for the file case. */
SDL_Surface *IMG_Load(const char *file)
{
SDL_Surface* sdl_surface = NULL;
sdl_surface = LoadImageFromFile(file);
if(NULL == sdl_surface)
{
// Either the file doesn't exist or ImageIO doesn't understand the format.
// For the latter case, fallback to the native SDL_image handlers.
SDL_RWops *src = SDL_RWFromFile(file, "rb");
char *ext = strrchr(file, '.');
if(ext) {
ext++;
}
if(!src) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
sdl_surface = IMG_LoadTyped_RW(src, 1, ext);
}
return sdl_surface;
}
int IMG_InitJPG()
{
return 0;
}
void IMG_QuitJPG()
{
}
int IMG_InitPNG()
{
return 0;
}
void IMG_QuitPNG()
{
}
int IMG_InitTIF()
{
return 0;
}
void IMG_QuitTIF()
{
}
/* Copied straight from other files so I don't have to alter them. */
static int IMG_isICOCUR(SDL_RWops *src, int type)
{
int start;
int is_ICOCUR;
/* The Win32 ICO file header (14 bytes) */
Uint16 bfReserved;
Uint16 bfType;
Uint16 bfCount;
if ( !src )
return 0;
start = SDL_RWtell(src);
is_ICOCUR = 0;
bfReserved = SDL_ReadLE16(src);
bfType = SDL_ReadLE16(src);
bfCount = SDL_ReadLE16(src);
if ((bfReserved == 0) && (bfType == type) && (bfCount != 0))
is_ICOCUR = 1;
SDL_RWseek(src, start, SEEK_SET);
return (is_ICOCUR);
}
int IMG_isICO(SDL_RWops *src)
{
return IMG_isICOCUR(src, 1);
}
int IMG_isCUR(SDL_RWops *src)
{
return IMG_isICOCUR(src, 2);
}
int IMG_isBMP(SDL_RWops *src)
{
int start;
int is_BMP;
char magic[2];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_BMP = 0;
if ( SDL_RWread(src, magic, sizeof(magic), 1) ) {
if ( strncmp(magic, "BM", 2) == 0 ) {
is_BMP = 1;
}
}
SDL_RWseek(src, start, SEEK_SET);
return(is_BMP);
}
int IMG_isGIF(SDL_RWops *src)
{
int start;
int is_GIF;
char magic[6];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_GIF = 0;
if ( SDL_RWread(src, magic, sizeof(magic), 1) ) {
if ( (strncmp(magic, "GIF", 3) == 0) &&
((memcmp(magic + 3, "87a", 3) == 0) ||
(memcmp(magic + 3, "89a", 3) == 0)) ) {
is_GIF = 1;
}
}
SDL_RWseek(src, start, SEEK_SET);
return(is_GIF);
}
int IMG_isJPG(SDL_RWops *src)
{
int start;
int is_JPG;
int in_scan;
Uint8 magic[4];
/* This detection code is by Steaphan Greene <stea@cs.binghamton.edu> */
/* Blame me, not Sam, if this doesn't work right. */
/* And don't forget to report the problem to the the sdl list too! */
if ( !src )
return 0;
start = SDL_RWtell(src);
is_JPG = 0;
in_scan = 0;
if ( SDL_RWread(src, magic, 2, 1) ) {
if ( (magic[0] == 0xFF) && (magic[1] == 0xD8) ) {
is_JPG = 1;
while (is_JPG == 1) {
if(SDL_RWread(src, magic, 1, 2) != 2) {
is_JPG = 0;
} else if( (magic[0] != 0xFF) && (in_scan == 0) ) {
is_JPG = 0;
} else if( (magic[0] != 0xFF) || (magic[1] == 0xFF) ) {
/* Extra padding in JPEG (legal) */
/* or this is data and we are scanning */
SDL_RWseek(src, -1, SEEK_CUR);
} else if(magic[1] == 0xD9) {
/* Got to end of good JPEG */
break;
} else if( (in_scan == 1) && (magic[1] == 0x00) ) {
/* This is an encoded 0xFF within the data */
} else if( (magic[1] >= 0xD0) && (magic[1] < 0xD9) ) {
/* These have nothing else */
} else if(SDL_RWread(src, magic+2, 1, 2) != 2) {
is_JPG = 0;
} else {
/* Yes, it's big-endian */
Uint32 start;
Uint32 size;
Uint32 end;
start = SDL_RWtell(src);
size = (magic[2] << 8) + magic[3];
end = SDL_RWseek(src, size-2, SEEK_CUR);
if ( end != start + size - 2 ) is_JPG = 0;
if ( magic[1] == 0xDA ) {
/* Now comes the actual JPEG meat */
#ifdef FAST_IS_JPEG
/* Ok, I'm convinced. It is a JPEG. */
break;
#else
/* I'm not convinced. Prove it! */
in_scan = 1;
#endif
}
}
}
}
}
SDL_RWseek(src, start, SEEK_SET);
return(is_JPG);
}
int IMG_isPNG(SDL_RWops *src)
{
int start;
int is_PNG;
Uint8 magic[4];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_PNG = 0;
if ( SDL_RWread(src, magic, 1, sizeof(magic)) == sizeof(magic) ) {
if ( magic[0] == 0x89 &&
magic[1] == 'P' &&
magic[2] == 'N' &&
magic[3] == 'G' ) {
is_PNG = 1;
}
}
SDL_RWseek(src, start, SEEK_SET);
return(is_PNG);
}
int IMG_isTIF(SDL_RWops* src)
{
int start;
int is_TIF;
Uint8 magic[4];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_TIF = 0;
if ( SDL_RWread(src, magic, 1, sizeof(magic)) == sizeof(magic) ) {
if ( (magic[0] == 'I' &&
magic[1] == 'I' &&
magic[2] == 0x2a &&
magic[3] == 0x00) ||
(magic[0] == 'M' &&
magic[1] == 'M' &&
magic[2] == 0x00 &&
magic[3] == 0x2a) ) {
is_TIF = 1;
}
}
SDL_RWseek(src, start, SEEK_SET);
return(is_TIF);
}
SDL_Surface* IMG_LoadCUR_RW(SDL_RWops *src)
{
/* FIXME: Is this a supported type? */
return LoadImageFromRWops(src, CFSTR("com.microsoft.cur"));
}
SDL_Surface* IMG_LoadICO_RW(SDL_RWops *src)
{
return LoadImageFromRWops(src, kUTTypeICO);
}
SDL_Surface* IMG_LoadBMP_RW(SDL_RWops *src)
{
return LoadImageFromRWops(src, kUTTypeBMP);
}
SDL_Surface* IMG_LoadGIF_RW(SDL_RWops *src)
{
return LoadImageFromRWops(src, kUTTypeGIF);
}
SDL_Surface* IMG_LoadJPG_RW(SDL_RWops *src)
{
return LoadImageFromRWops(src, kUTTypeJPEG);
}
SDL_Surface* IMG_LoadPNG_RW(SDL_RWops *src)
{
return LoadImageFromRWops(src, kUTTypePNG);
}
SDL_Surface* IMG_LoadTGA_RW(SDL_RWops *src)
{
return LoadImageFromRWops(src, CFSTR("com.truevision.tga-image"));
}
SDL_Surface* IMG_LoadTIF_RW(SDL_RWops *src)
{
return LoadImageFromRWops(src, kUTTypeTIFF);
}
libs/SDL2_image-2.0.0/IMG_bmp.c
-892
View File
@@ -1,892 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#if (!defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)) || !defined(BMP_USES_IMAGEIO)
/* This is a BMP image file loading framework
*
* ICO/CUR file support is here as well since it uses similar internal
* representation
*
* A good test suite of BMP images is available at:
* http://entropymine.com/jason/bmpsuite/bmpsuite/html/bmpsuite.html
*/
#include <stdio.h>
#include <string.h>
#include "SDL_image.h"
#ifdef LOAD_BMP
/* See if an image is contained in a data source */
int IMG_isBMP(SDL_RWops *src)
{
Sint64 start;
int is_BMP;
char magic[2];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_BMP = 0;
if ( SDL_RWread(src, magic, sizeof(magic), 1) ) {
if ( SDL_strncmp(magic, "BM", 2) == 0 ) {
is_BMP = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_BMP);
}
static int IMG_isICOCUR(SDL_RWops *src, int type)
{
Sint64 start;
int is_ICOCUR;
/* The Win32 ICO file header (14 bytes) */
Uint16 bfReserved;
Uint16 bfType;
Uint16 bfCount;
if ( !src )
return 0;
start = SDL_RWtell(src);
is_ICOCUR = 0;
bfReserved = SDL_ReadLE16(src);
bfType = SDL_ReadLE16(src);
bfCount = SDL_ReadLE16(src);
if ((bfReserved == 0) && (bfType == type) && (bfCount != 0))
is_ICOCUR = 1;
SDL_RWseek(src, start, RW_SEEK_SET);
return (is_ICOCUR);
}
int IMG_isICO(SDL_RWops *src)
{
return IMG_isICOCUR(src, 1);
}
int IMG_isCUR(SDL_RWops *src)
{
return IMG_isICOCUR(src, 2);
}
#include "SDL_error.h"
#include "SDL_video.h"
#include "SDL_endian.h"
/* Compression encodings for BMP files */
#ifndef BI_RGB
#define BI_RGB 0
#define BI_RLE8 1
#define BI_RLE4 2
#define BI_BITFIELDS 3
#endif
static int readRlePixels(SDL_Surface * surface, SDL_RWops * src, int isRle8)
{
/*
| Sets the surface pixels from src. A bmp image is upside down.
*/
int pitch = surface->pitch;
int height = surface->h;
Uint8 *start = (Uint8 *)surface->pixels;
Uint8 *end = start + (height*pitch);
Uint8 *bits = end-pitch, *spot;
int ofs = 0;
Uint8 ch;
Uint8 needsPad;
#define COPY_PIXEL(x) spot = &bits[ofs++]; if(spot >= start && spot < end) *spot = (x)
for (;;) {
if ( !SDL_RWread(src, &ch, 1, 1) ) return 1;
/*
| encoded mode starts with a run length, and then a byte
| with two colour indexes to alternate between for the run
*/
if ( ch ) {
Uint8 pixel;
if ( !SDL_RWread(src, &pixel, 1, 1) ) return 1;
if ( isRle8 ) { /* 256-color bitmap, compressed */
do {
COPY_PIXEL(pixel);
} while (--ch);
} else { /* 16-color bitmap, compressed */
Uint8 pixel0 = pixel >> 4;
Uint8 pixel1 = pixel & 0x0F;
for (;;) {
COPY_PIXEL(pixel0); /* even count, high nibble */
if (!--ch) break;
COPY_PIXEL(pixel1); /* odd count, low nibble */
if (!--ch) break;
}
}
} else {
/*
| A leading zero is an escape; it may signal the end of the bitmap,
| a cursor move, or some absolute data.
| zero tag may be absolute mode or an escape
*/
if ( !SDL_RWread(src, &ch, 1, 1) ) return 1;
switch (ch) {
case 0: /* end of line */
ofs = 0;
bits -= pitch; /* go to previous */
break;
case 1: /* end of bitmap */
return 0; /* success! */
case 2: /* delta */
if ( !SDL_RWread(src, &ch, 1, 1) ) return 1;
ofs += ch;
if ( !SDL_RWread(src, &ch, 1, 1) ) return 1;
bits -= (ch * pitch);
break;
default: /* no compression */
if (isRle8) {
needsPad = ( ch & 1 );
do {
Uint8 pixel;
if ( !SDL_RWread(src, &pixel, 1, 1) ) return 1;
COPY_PIXEL(pixel);
} while (--ch);
} else {
needsPad = ( ((ch+1)>>1) & 1 ); /* (ch+1)>>1: bytes size */
for (;;) {
Uint8 pixel;
if ( !SDL_RWread(src, &pixel, 1, 1) ) return 1;
COPY_PIXEL(pixel >> 4);
if (!--ch) break;
COPY_PIXEL(pixel & 0x0F);
if (!--ch) break;
}
}
/* pad at even boundary */
if ( needsPad && !SDL_RWread(src, &ch, 1, 1) ) return 1;
break;
}
}
}
}
static void CorrectAlphaChannel(SDL_Surface *surface)
{
/* Check to see if there is any alpha channel data */
SDL_bool hasAlpha = SDL_FALSE;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int alphaChannelOffset = 0;
#else
int alphaChannelOffset = 3;
#endif
Uint8 *alpha = ((Uint8*)surface->pixels) + alphaChannelOffset;
Uint8 *end = alpha + surface->h * surface->pitch;
while (alpha < end) {
if (*alpha != 0) {
hasAlpha = SDL_TRUE;
break;
}
alpha += 4;
}
if (!hasAlpha) {
alpha = ((Uint8*)surface->pixels) + alphaChannelOffset;
while (alpha < end) {
*alpha = SDL_ALPHA_OPAQUE;
alpha += 4;
}
}
}
static SDL_Surface *LoadBMP_RW (SDL_RWops *src, int freesrc)
{
SDL_bool was_error;
Sint64 fp_offset;
int bmpPitch;
int i, pad;
SDL_Surface *surface;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
Uint32 Amask;
SDL_Palette *palette;
Uint8 *bits;
Uint8 *top, *end;
SDL_bool topDown;
int ExpandBMP;
SDL_bool correctAlpha = SDL_FALSE;
/* The Win32 BMP file header (14 bytes) */
char magic[2];
Uint32 bfSize;
Uint16 bfReserved1;
Uint16 bfReserved2;
Uint32 bfOffBits;
/* The Win32 BITMAPINFOHEADER struct (40 bytes) */
Uint32 biSize;
Sint32 biWidth;
Sint32 biHeight;
Uint16 biPlanes;
Uint16 biBitCount;
Uint32 biCompression;
Uint32 biSizeImage;
Sint32 biXPelsPerMeter;
Sint32 biYPelsPerMeter;
Uint32 biClrUsed;
Uint32 biClrImportant;
/* Make sure we are passed a valid data source */
surface = NULL;
was_error = SDL_FALSE;
if ( src == NULL ) {
was_error = SDL_TRUE;
goto done;
}
/* Read in the BMP file header */
fp_offset = SDL_RWtell(src);
SDL_ClearError();
if ( SDL_RWread(src, magic, 1, 2) != 2 ) {
SDL_Error(SDL_EFREAD);
was_error = SDL_TRUE;
goto done;
}
if ( SDL_strncmp(magic, "BM", 2) != 0 ) {
IMG_SetError("File is not a Windows BMP file");
was_error = SDL_TRUE;
goto done;
}
bfSize = SDL_ReadLE32(src);
bfReserved1 = SDL_ReadLE16(src);
bfReserved2 = SDL_ReadLE16(src);
bfOffBits = SDL_ReadLE32(src);
/* Read the Win32 BITMAPINFOHEADER */
biSize = SDL_ReadLE32(src);
if ( biSize == 12 ) {
biWidth = (Uint32)SDL_ReadLE16(src);
biHeight = (Uint32)SDL_ReadLE16(src);
biPlanes = SDL_ReadLE16(src);
biBitCount = SDL_ReadLE16(src);
biCompression = BI_RGB;
biSizeImage = 0;
biXPelsPerMeter = 0;
biYPelsPerMeter = 0;
biClrUsed = 0;
biClrImportant = 0;
} else {
biWidth = SDL_ReadLE32(src);
biHeight = SDL_ReadLE32(src);
biPlanes = SDL_ReadLE16(src);
biBitCount = SDL_ReadLE16(src);
biCompression = SDL_ReadLE32(src);
biSizeImage = SDL_ReadLE32(src);
biXPelsPerMeter = SDL_ReadLE32(src);
biYPelsPerMeter = SDL_ReadLE32(src);
biClrUsed = SDL_ReadLE32(src);
biClrImportant = SDL_ReadLE32(src);
}
if (biHeight < 0) {
topDown = SDL_TRUE;
biHeight = -biHeight;
} else {
topDown = SDL_FALSE;
}
/* Check for read error */
if ( strcmp(SDL_GetError(), "") != 0 ) {
was_error = SDL_TRUE;
goto done;
}
/* Expand 1 and 4 bit bitmaps to 8 bits per pixel */
switch (biBitCount) {
case 1:
case 4:
ExpandBMP = biBitCount;
biBitCount = 8;
break;
default:
ExpandBMP = 0;
break;
}
/* RLE4 and RLE8 BMP compression is supported */
Rmask = Gmask = Bmask = Amask = 0;
switch (biCompression) {
case BI_RGB:
/* If there are no masks, use the defaults */
if ( bfOffBits == (14+biSize) ) {
/* Default values for the BMP format */
switch (biBitCount) {
case 15:
case 16:
Rmask = 0x7C00;
Gmask = 0x03E0;
Bmask = 0x001F;
break;
case 24:
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
Rmask = 0x000000FF;
Gmask = 0x0000FF00;
Bmask = 0x00FF0000;
#else
Rmask = 0x00FF0000;
Gmask = 0x0000FF00;
Bmask = 0x000000FF;
#endif
break;
case 32:
/* We don't know if this has alpha channel or not */
correctAlpha = SDL_TRUE;
Amask = 0xFF000000;
Rmask = 0x00FF0000;
Gmask = 0x0000FF00;
Bmask = 0x000000FF;
break;
default:
break;
}
break;
}
/* Fall through -- read the RGB masks */
default:
switch (biBitCount) {
case 15:
case 16:
Rmask = SDL_ReadLE32(src);
Gmask = SDL_ReadLE32(src);
Bmask = SDL_ReadLE32(src);
break;
case 32:
Rmask = SDL_ReadLE32(src);
Gmask = SDL_ReadLE32(src);
Bmask = SDL_ReadLE32(src);
Amask = SDL_ReadLE32(src);
break;
default:
break;
}
break;
}
/* Create a compatible surface, note that the colors are RGB ordered */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
biWidth, biHeight, biBitCount, Rmask, Gmask, Bmask, Amask);
if ( surface == NULL ) {
was_error = SDL_TRUE;
goto done;
}
/* Load the palette, if any */
palette = (surface->format)->palette;
if ( palette ) {
if ( SDL_RWseek(src, fp_offset+14+biSize, RW_SEEK_SET) < 0 ) {
SDL_Error(SDL_EFSEEK);
was_error = SDL_TRUE;
goto done;
}
/*
| guich: always use 1<<bpp b/c some bitmaps can bring wrong information
| for colorsUsed
*/
/* if ( biClrUsed == 0 ) { */
biClrUsed = 1 << biBitCount;
/* } */
if ( biSize == 12 ) {
for ( i = 0; i < (int)biClrUsed; ++i ) {
SDL_RWread(src, &palette->colors[i].b, 1, 1);
SDL_RWread(src, &palette->colors[i].g, 1, 1);
SDL_RWread(src, &palette->colors[i].r, 1, 1);
palette->colors[i].a = SDL_ALPHA_OPAQUE;
}
} else {
for ( i = 0; i < (int)biClrUsed; ++i ) {
SDL_RWread(src, &palette->colors[i].b, 1, 1);
SDL_RWread(src, &palette->colors[i].g, 1, 1);
SDL_RWread(src, &palette->colors[i].r, 1, 1);
SDL_RWread(src, &palette->colors[i].a, 1, 1);
/* According to Microsoft documentation, the fourth element
is reserved and must be zero, so we shouldn't treat it as
alpha.
*/
palette->colors[i].a = SDL_ALPHA_OPAQUE;
}
}
palette->ncolors = biClrUsed;
}
/* Read the surface pixels. Note that the bmp image is upside down */
if ( SDL_RWseek(src, fp_offset+bfOffBits, RW_SEEK_SET) < 0 ) {
SDL_Error(SDL_EFSEEK);
was_error = SDL_TRUE;
goto done;
}
if ((biCompression == BI_RLE4) || (biCompression == BI_RLE8)) {
was_error = (SDL_bool)readRlePixels(surface, src, biCompression == BI_RLE8);
if (was_error) IMG_SetError("Error reading from BMP");
goto done;
}
top = (Uint8 *)surface->pixels;
end = (Uint8 *)surface->pixels+(surface->h*surface->pitch);
switch (ExpandBMP) {
case 1:
bmpPitch = (biWidth + 7) >> 3;
pad = (((bmpPitch)%4) ? (4-((bmpPitch)%4)) : 0);
break;
case 4:
bmpPitch = (biWidth + 1) >> 1;
pad = (((bmpPitch)%4) ? (4-((bmpPitch)%4)) : 0);
break;
default:
pad = ((surface->pitch%4) ?
(4-(surface->pitch%4)) : 0);
break;
}
if ( topDown ) {
bits = top;
} else {
bits = end - surface->pitch;
}
while ( bits >= top && bits < end ) {
switch (ExpandBMP) {
case 1:
case 4: {
Uint8 pixel = 0;
int shift = (8-ExpandBMP);
for ( i=0; i<surface->w; ++i ) {
if ( i%(8/ExpandBMP) == 0 ) {
if ( !SDL_RWread(src, &pixel, 1, 1) ) {
IMG_SetError("Error reading from BMP");
was_error = SDL_TRUE;
goto done;
}
}
*(bits+i) = (pixel>>shift);
pixel <<= ExpandBMP;
} }
break;
default:
if ( SDL_RWread(src, bits, 1, surface->pitch) != surface->pitch ) {
SDL_Error(SDL_EFREAD);
was_error = SDL_TRUE;
goto done;
}
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
/* Byte-swap the pixels if needed. Note that the 24bpp
case has already been taken care of above. */
switch(biBitCount) {
case 15:
case 16: {
Uint16 *pix = (Uint16 *)bits;
for(i = 0; i < surface->w; i++)
pix[i] = SDL_Swap16(pix[i]);
break;
}
case 32: {
Uint32 *pix = (Uint32 *)bits;
for(i = 0; i < surface->w; i++)
pix[i] = SDL_Swap32(pix[i]);
break;
}
}
#endif
break;
}
/* Skip padding bytes, ugh */
if ( pad ) {
Uint8 padbyte;
for ( i=0; i<pad; ++i ) {
SDL_RWread(src, &padbyte, 1, 1);
}
}
if ( topDown ) {
bits += surface->pitch;
} else {
bits -= surface->pitch;
}
}
if (correctAlpha) {
CorrectAlphaChannel(surface);
}
done:
if ( was_error ) {
if ( src ) {
SDL_RWseek(src, fp_offset, RW_SEEK_SET);
}
if ( surface ) {
SDL_FreeSurface(surface);
}
surface = NULL;
}
if ( freesrc && src ) {
SDL_RWclose(src);
}
return(surface);
}
static Uint8
SDL_Read8(SDL_RWops * src)
{
Uint8 value;
SDL_RWread(src, &value, 1, 1);
return (value);
}
static SDL_Surface *
LoadICOCUR_RW(SDL_RWops * src, int type, int freesrc)
{
SDL_bool was_error;
Sint64 fp_offset;
int bmpPitch;
int i, pad;
SDL_Surface *surface;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
Uint8 *bits;
int ExpandBMP;
int maxCol = 0;
int icoOfs = 0;
Uint32 palette[256];
/* The Win32 ICO file header (14 bytes) */
Uint16 bfReserved;
Uint16 bfType;
Uint16 bfCount;
/* The Win32 BITMAPINFOHEADER struct (40 bytes) */
Uint32 biSize;
Sint32 biWidth;
Sint32 biHeight;
Uint16 biPlanes;
Uint16 biBitCount;
Uint32 biCompression;
Uint32 biSizeImage;
Sint32 biXPelsPerMeter;
Sint32 biYPelsPerMeter;
Uint32 biClrUsed;
Uint32 biClrImportant;
/* Make sure we are passed a valid data source */
surface = NULL;
was_error = SDL_FALSE;
if (src == NULL) {
was_error = SDL_TRUE;
goto done;
}
/* Read in the ICO file header */
fp_offset = SDL_RWtell(src);
SDL_ClearError();
bfReserved = SDL_ReadLE16(src);
bfType = SDL_ReadLE16(src);
bfCount = SDL_ReadLE16(src);
if ((bfReserved != 0) || (bfType != type) || (bfCount == 0)) {
IMG_SetError("File is not a Windows %s file", type == 1 ? "ICO" : "CUR");
was_error = SDL_TRUE;
goto done;
}
/* Read the Win32 Icon Directory */
for (i = 0; i < bfCount; i++) {
/* Icon Directory Entries */
int bWidth = SDL_Read8(src); /* Uint8, but 0 = 256 ! */
int bHeight = SDL_Read8(src); /* Uint8, but 0 = 256 ! */
int bColorCount = SDL_Read8(src); /* Uint8, but 0 = 256 ! */
Uint8 bReserved = SDL_Read8(src);
Uint16 wPlanes = SDL_ReadLE16(src);
Uint16 wBitCount = SDL_ReadLE16(src);
Uint32 dwBytesInRes = SDL_ReadLE32(src);
Uint32 dwImageOffset = SDL_ReadLE32(src);
if (!bWidth)
bWidth = 256;
if (!bHeight)
bHeight = 256;
if (!bColorCount)
bColorCount = 256;
//printf("%dx%d@%d - %08x\n", bWidth, bHeight, bColorCount, dwImageOffset);
if (bColorCount > maxCol) {
maxCol = bColorCount;
icoOfs = dwImageOffset;
//printf("marked\n");
}
}
/* Advance to the DIB Data */
if (SDL_RWseek(src, icoOfs, RW_SEEK_SET) < 0) {
SDL_Error(SDL_EFSEEK);
was_error = SDL_TRUE;
goto done;
}
/* Read the Win32 BITMAPINFOHEADER */
biSize = SDL_ReadLE32(src);
if (biSize == 40) {
biWidth = SDL_ReadLE32(src);
biHeight = SDL_ReadLE32(src);
biPlanes = SDL_ReadLE16(src);
biBitCount = SDL_ReadLE16(src);
biCompression = SDL_ReadLE32(src);
biSizeImage = SDL_ReadLE32(src);
biXPelsPerMeter = SDL_ReadLE32(src);
biYPelsPerMeter = SDL_ReadLE32(src);
biClrUsed = SDL_ReadLE32(src);
biClrImportant = SDL_ReadLE32(src);
} else {
IMG_SetError("Unsupported ICO bitmap format");
was_error = SDL_TRUE;
goto done;
}
/* Check for read error */
if (SDL_strcmp(SDL_GetError(), "") != 0) {
was_error = SDL_TRUE;
goto done;
}
/* We don't support any BMP compression right now */
switch (biCompression) {
case BI_RGB:
/* Default values for the BMP format */
switch (biBitCount) {
case 1:
case 4:
ExpandBMP = biBitCount;
biBitCount = 8;
break;
case 8:
ExpandBMP = 8;
break;
case 32:
Rmask = 0x00FF0000;
Gmask = 0x0000FF00;
Bmask = 0x000000FF;
ExpandBMP = 0;
break;
default:
IMG_SetError("ICO file with unsupported bit count");
was_error = SDL_TRUE;
goto done;
}
break;
default:
IMG_SetError("Compressed ICO files not supported");
was_error = SDL_TRUE;
goto done;
}
/* Create a RGBA surface */
biHeight = biHeight >> 1;
//printf("%d x %d\n", biWidth, biHeight);
surface =
SDL_CreateRGBSurface(0, biWidth, biHeight, 32, 0x00FF0000,
0x0000FF00, 0x000000FF, 0xFF000000);
if (surface == NULL) {
was_error = SDL_TRUE;
goto done;
}
/* Load the palette, if any */
//printf("bc %d bused %d\n", biBitCount, biClrUsed);
if (biBitCount <= 8) {
if (biClrUsed == 0) {
biClrUsed = 1 << biBitCount;
}
for (i = 0; i < (int) biClrUsed; ++i) {
SDL_RWread(src, &palette[i], 4, 1);
}
}
/* Read the surface pixels. Note that the bmp image is upside down */
bits = (Uint8 *) surface->pixels + (surface->h * surface->pitch);
switch (ExpandBMP) {
case 1:
bmpPitch = (biWidth + 7) >> 3;
pad = (((bmpPitch) % 4) ? (4 - ((bmpPitch) % 4)) : 0);
break;
case 4:
bmpPitch = (biWidth + 1) >> 1;
pad = (((bmpPitch) % 4) ? (4 - ((bmpPitch) % 4)) : 0);
break;
case 8:
bmpPitch = biWidth;
pad = (((bmpPitch) % 4) ? (4 - ((bmpPitch) % 4)) : 0);
break;
default:
bmpPitch = biWidth * 4;
pad = 0;
break;
}
while (bits > (Uint8 *) surface->pixels) {
bits -= surface->pitch;
switch (ExpandBMP) {
case 1:
case 4:
case 8:
{
Uint8 pixel = 0;
int shift = (8 - ExpandBMP);
for (i = 0; i < surface->w; ++i) {
if (i % (8 / ExpandBMP) == 0) {
if (!SDL_RWread(src, &pixel, 1, 1)) {
IMG_SetError("Error reading from ICO");
was_error = SDL_TRUE;
goto done;
}
}
*((Uint32 *) bits + i) = (palette[pixel >> shift]);
pixel <<= ExpandBMP;
}
}
break;
default:
if (SDL_RWread(src, bits, 1, surface->pitch)
!= surface->pitch) {
SDL_Error(SDL_EFREAD);
was_error = SDL_TRUE;
goto done;
}
break;
}
/* Skip padding bytes, ugh */
if (pad) {
Uint8 padbyte;
for (i = 0; i < pad; ++i) {
SDL_RWread(src, &padbyte, 1, 1);
}
}
}
/* Read the mask pixels. Note that the bmp image is upside down */
bits = (Uint8 *) surface->pixels + (surface->h * surface->pitch);
ExpandBMP = 1;
bmpPitch = (biWidth + 7) >> 3;
pad = (((bmpPitch) % 4) ? (4 - ((bmpPitch) % 4)) : 0);
while (bits > (Uint8 *) surface->pixels) {
Uint8 pixel = 0;
int shift = (8 - ExpandBMP);
bits -= surface->pitch;
for (i = 0; i < surface->w; ++i) {
if (i % (8 / ExpandBMP) == 0) {
if (!SDL_RWread(src, &pixel, 1, 1)) {
IMG_SetError("Error reading from ICO");
was_error = SDL_TRUE;
goto done;
}
}
*((Uint32 *) bits + i) |= ((pixel >> shift) ? 0 : 0xFF000000);
pixel <<= ExpandBMP;
}
/* Skip padding bytes, ugh */
if (pad) {
Uint8 padbyte;
for (i = 0; i < pad; ++i) {
SDL_RWread(src, &padbyte, 1, 1);
}
}
}
done:
if (was_error) {
if (src) {
SDL_RWseek(src, fp_offset, RW_SEEK_SET);
}
if (surface) {
SDL_FreeSurface(surface);
}
surface = NULL;
}
if (freesrc && src) {
SDL_RWclose(src);
}
return (surface);
}
/* Load a BMP type image from an SDL datasource */
SDL_Surface *IMG_LoadBMP_RW(SDL_RWops *src)
{
return(LoadBMP_RW(src, 0));
}
/* Load a ICO type image from an SDL datasource */
SDL_Surface *IMG_LoadICO_RW(SDL_RWops *src)
{
return(LoadICOCUR_RW(src, 1, 0));
}
/* Load a CUR type image from an SDL datasource */
SDL_Surface *IMG_LoadCUR_RW(SDL_RWops *src)
{
return(LoadICOCUR_RW(src, 2, 0));
}
#else
/* See if an image is contained in a data source */
int IMG_isBMP(SDL_RWops *src)
{
return(0);
}
int IMG_isICO(SDL_RWops *src)
{
return(0);
}
int IMG_isCUR(SDL_RWops *src)
{
return(0);
}
/* Load a BMP type image from an SDL datasource */
SDL_Surface *IMG_LoadBMP_RW(SDL_RWops *src)
{
return(NULL);
}
/* Load a BMP type image from an SDL datasource */
SDL_Surface *IMG_LoadCUR_RW(SDL_RWops *src)
{
return(NULL);
}
/* Load a BMP type image from an SDL datasource */
SDL_Surface *IMG_LoadICO_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_BMP */
#endif /* !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND) */
libs/SDL2_image-2.0.0/IMG_gif.c
-636
View File
@@ -1,636 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#if !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)
/* This is a GIF image file loading framework */
#include <stdio.h>
#include <string.h>
#include "SDL_image.h"
#ifdef LOAD_GIF
/* See if an image is contained in a data source */
int IMG_isGIF(SDL_RWops *src)
{
Sint64 start;
int is_GIF;
char magic[6];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_GIF = 0;
if ( SDL_RWread(src, magic, sizeof(magic), 1) ) {
if ( (SDL_strncmp(magic, "GIF", 3) == 0) &&
((SDL_memcmp(magic + 3, "87a", 3) == 0) ||
(SDL_memcmp(magic + 3, "89a", 3) == 0)) ) {
is_GIF = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_GIF);
}
/* Code from here to end of file has been adapted from XPaint: */
/* +-------------------------------------------------------------------+ */
/* | Copyright 1990, 1991, 1993 David Koblas. | */
/* | Copyright 1996 Torsten Martinsen. | */
/* | Permission to use, copy, modify, and distribute this software | */
/* | and its documentation for any purpose and without fee is hereby | */
/* | granted, provided that the above copyright notice appear in all | */
/* | copies and that both that copyright notice and this permission | */
/* | notice appear in supporting documentation. This software is | */
/* | provided "as is" without express or implied warranty. | */
/* +-------------------------------------------------------------------+ */
/* Adapted for use in SDL by Sam Lantinga -- 7/20/98 */
#define USED_BY_SDL
#include <stdio.h>
#include <string.h>
#ifdef USED_BY_SDL
/* Changes to work with SDL:
Include SDL header file
Use SDL_Surface rather than xpaint Image structure
Define SDL versions of RWSetMsg(), ImageNewCmap() and ImageSetCmap()
*/
#include "SDL.h"
#define Image SDL_Surface
#define RWSetMsg IMG_SetError
#define ImageNewCmap(w, h, s) SDL_CreateRGBSurface(SDL_SWSURFACE,w,h,8,0,0,0,0)
#define ImageSetCmap(s, i, R, G, B) do { \
s->format->palette->colors[i].r = R; \
s->format->palette->colors[i].g = G; \
s->format->palette->colors[i].b = B; \
} while (0)
/* * * * * */
#else
/* Original XPaint sources */
#include "image.h"
#include "rwTable.h"
#define SDL_RWops FILE
#define SDL_RWclose fclose
#endif /* USED_BY_SDL */
#define MAXCOLORMAPSIZE 256
#define TRUE 1
#define FALSE 0
#define CM_RED 0
#define CM_GREEN 1
#define CM_BLUE 2
#define MAX_LWZ_BITS 12
#define INTERLACE 0x40
#define LOCALCOLORMAP 0x80
#define BitSet(byte, bit) (((byte) & (bit)) == (bit))
#define ReadOK(file,buffer,len) SDL_RWread(file, buffer, len, 1)
#define LM_to_uint(a,b) (((b)<<8)|(a))
static struct {
unsigned int Width;
unsigned int Height;
unsigned char ColorMap[3][MAXCOLORMAPSIZE];
unsigned int BitPixel;
unsigned int ColorResolution;
unsigned int Background;
unsigned int AspectRatio;
int GrayScale;
} GifScreen;
static struct {
int transparent;
int delayTime;
int inputFlag;
int disposal;
} Gif89;
static int ReadColorMap(SDL_RWops * src, int number,
unsigned char buffer[3][MAXCOLORMAPSIZE], int *flag);
static int DoExtension(SDL_RWops * src, int label);
static int GetDataBlock(SDL_RWops * src, unsigned char *buf);
static int GetCode(SDL_RWops * src, int code_size, int flag);
static int LWZReadByte(SDL_RWops * src, int flag, int input_code_size);
static Image *ReadImage(SDL_RWops * src, int len, int height, int,
unsigned char cmap[3][MAXCOLORMAPSIZE],
int gray, int interlace, int ignore);
Image *
IMG_LoadGIF_RW(SDL_RWops *src)
{
Sint64 start;
unsigned char buf[16];
unsigned char c;
unsigned char localColorMap[3][MAXCOLORMAPSIZE];
int grayScale;
int useGlobalColormap;
int bitPixel;
int imageCount = 0;
char version[4];
int imageNumber = 1;
Image *image = NULL;
if ( src == NULL ) {
return NULL;
}
start = SDL_RWtell(src);
if (!ReadOK(src, buf, 6)) {
RWSetMsg("error reading magic number");
goto done;
}
if (SDL_strncmp((char *) buf, "GIF", 3) != 0) {
RWSetMsg("not a GIF file");
goto done;
}
SDL_memcpy(version, (char *) buf + 3, 3);
version[3] = '\0';
if ((SDL_strcmp(version, "87a") != 0) && (SDL_strcmp(version, "89a") != 0)) {
RWSetMsg("bad version number, not '87a' or '89a'");
goto done;
}
Gif89.transparent = -1;
Gif89.delayTime = -1;
Gif89.inputFlag = -1;
Gif89.disposal = 0;
if (!ReadOK(src, buf, 7)) {
RWSetMsg("failed to read screen descriptor");
goto done;
}
GifScreen.Width = LM_to_uint(buf[0], buf[1]);
GifScreen.Height = LM_to_uint(buf[2], buf[3]);
GifScreen.BitPixel = 2 << (buf[4] & 0x07);
GifScreen.ColorResolution = (((buf[4] & 0x70) >> 3) + 1);
GifScreen.Background = buf[5];
GifScreen.AspectRatio = buf[6];
if (BitSet(buf[4], LOCALCOLORMAP)) { /* Global Colormap */
if (ReadColorMap(src, GifScreen.BitPixel, GifScreen.ColorMap,
&GifScreen.GrayScale)) {
RWSetMsg("error reading global colormap");
goto done;
}
}
do {
if (!ReadOK(src, &c, 1)) {
RWSetMsg("EOF / read error on image data");
goto done;
}
if (c == ';') { /* GIF terminator */
if (imageCount < imageNumber) {
RWSetMsg("only %d image%s found in file",
imageCount, imageCount > 1 ? "s" : "");
goto done;
}
}
if (c == '!') { /* Extension */
if (!ReadOK(src, &c, 1)) {
RWSetMsg("EOF / read error on extention function code");
goto done;
}
DoExtension(src, c);
continue;
}
if (c != ',') { /* Not a valid start character */
continue;
}
++imageCount;
if (!ReadOK(src, buf, 9)) {
RWSetMsg("couldn't read left/top/width/height");
goto done;
}
useGlobalColormap = !BitSet(buf[8], LOCALCOLORMAP);
bitPixel = 1 << ((buf[8] & 0x07) + 1);
if (!useGlobalColormap) {
if (ReadColorMap(src, bitPixel, localColorMap, &grayScale)) {
RWSetMsg("error reading local colormap");
goto done;
}
image = ReadImage(src, LM_to_uint(buf[4], buf[5]),
LM_to_uint(buf[6], buf[7]),
bitPixel, localColorMap, grayScale,
BitSet(buf[8], INTERLACE),
imageCount != imageNumber);
} else {
image = ReadImage(src, LM_to_uint(buf[4], buf[5]),
LM_to_uint(buf[6], buf[7]),
GifScreen.BitPixel, GifScreen.ColorMap,
GifScreen.GrayScale, BitSet(buf[8], INTERLACE),
imageCount != imageNumber);
}
} while (image == NULL);
#ifdef USED_BY_SDL
if ( Gif89.transparent >= 0 ) {
SDL_SetColorKey(image, SDL_TRUE, Gif89.transparent);
}
#endif
done:
if ( image == NULL ) {
SDL_RWseek(src, start, RW_SEEK_SET);
}
return image;
}
static int
ReadColorMap(SDL_RWops *src, int number,
unsigned char buffer[3][MAXCOLORMAPSIZE], int *gray)
{
int i;
unsigned char rgb[3];
int flag;
flag = TRUE;
for (i = 0; i < number; ++i) {
if (!ReadOK(src, rgb, sizeof(rgb))) {
RWSetMsg("bad colormap");
return 1;
}
buffer[CM_RED][i] = rgb[0];
buffer[CM_GREEN][i] = rgb[1];
buffer[CM_BLUE][i] = rgb[2];
flag &= (rgb[0] == rgb[1] && rgb[1] == rgb[2]);
}
#if 0
if (flag)
*gray = (number == 2) ? PBM_TYPE : PGM_TYPE;
else
*gray = PPM_TYPE;
#else
*gray = 0;
#endif
return FALSE;
}
static int
DoExtension(SDL_RWops *src, int label)
{
static unsigned char buf[256];
char *str;
switch (label) {
case 0x01: /* Plain Text Extension */
str = "Plain Text Extension";
break;
case 0xff: /* Application Extension */
str = "Application Extension";
break;
case 0xfe: /* Comment Extension */
str = "Comment Extension";
while (GetDataBlock(src, (unsigned char *) buf) != 0)
;
return FALSE;
case 0xf9: /* Graphic Control Extension */
str = "Graphic Control Extension";
(void) GetDataBlock(src, (unsigned char *) buf);
Gif89.disposal = (buf[0] >> 2) & 0x7;
Gif89.inputFlag = (buf[0] >> 1) & 0x1;
Gif89.delayTime = LM_to_uint(buf[1], buf[2]);
if ((buf[0] & 0x1) != 0)
Gif89.transparent = buf[3];
while (GetDataBlock(src, (unsigned char *) buf) != 0)
;
return FALSE;
default:
str = (char *)buf;
SDL_snprintf(str, 256, "UNKNOWN (0x%02x)", label);
break;
}
while (GetDataBlock(src, (unsigned char *) buf) != 0)
;
return FALSE;
}
static int ZeroDataBlock = FALSE;
static int
GetDataBlock(SDL_RWops *src, unsigned char *buf)
{
unsigned char count;
if (!ReadOK(src, &count, 1)) {
/* pm_message("error in getting DataBlock size" ); */
return -1;
}
ZeroDataBlock = count == 0;
if ((count != 0) && (!ReadOK(src, buf, count))) {
/* pm_message("error in reading DataBlock" ); */
return -1;
}
return count;
}
static int
GetCode(SDL_RWops *src, int code_size, int flag)
{
static unsigned char buf[280];
static int curbit, lastbit, done, last_byte;
int i, j, ret;
unsigned char count;
if (flag) {
curbit = 0;
lastbit = 0;
done = FALSE;
return 0;
}
if ((curbit + code_size) >= lastbit) {
if (done) {
if (curbit >= lastbit)
RWSetMsg("ran off the end of my bits");
return -1;
}
buf[0] = buf[last_byte - 2];
buf[1] = buf[last_byte - 1];
if ((count = GetDataBlock(src, &buf[2])) == 0)
done = TRUE;
last_byte = 2 + count;
curbit = (curbit - lastbit) + 16;
lastbit = (2 + count) * 8;
}
ret = 0;
for (i = curbit, j = 0; j < code_size; ++i, ++j)
ret |= ((buf[i / 8] & (1 << (i % 8))) != 0) << j;
curbit += code_size;
return ret;
}
static int
LWZReadByte(SDL_RWops *src, int flag, int input_code_size)
{
static int fresh = FALSE;
int code, incode;
static int code_size, set_code_size;
static int max_code, max_code_size;
static int firstcode, oldcode;
static int clear_code, end_code;
static int table[2][(1 << MAX_LWZ_BITS)];
static int stack[(1 << (MAX_LWZ_BITS)) * 2], *sp;
register int i;
/* Fixed buffer overflow found by Michael Skladnikiewicz */
if (input_code_size > MAX_LWZ_BITS)
return -1;
if (flag) {
set_code_size = input_code_size;
code_size = set_code_size + 1;
clear_code = 1 << set_code_size;
end_code = clear_code + 1;
max_code_size = 2 * clear_code;
max_code = clear_code + 2;
GetCode(src, 0, TRUE);
fresh = TRUE;
for (i = 0; i < clear_code; ++i) {
table[0][i] = 0;
table[1][i] = i;
}
table[1][0] = 0;
for (; i < (1 << MAX_LWZ_BITS); ++i)
table[0][i] = 0;
sp = stack;
return 0;
} else if (fresh) {
fresh = FALSE;
do {
firstcode = oldcode = GetCode(src, code_size, FALSE);
} while (firstcode == clear_code);
return firstcode;
}
if (sp > stack)
return *--sp;
while ((code = GetCode(src, code_size, FALSE)) >= 0) {
if (code == clear_code) {
for (i = 0; i < clear_code; ++i) {
table[0][i] = 0;
table[1][i] = i;
}
for (; i < (1 << MAX_LWZ_BITS); ++i)
table[0][i] = table[1][i] = 0;
code_size = set_code_size + 1;
max_code_size = 2 * clear_code;
max_code = clear_code + 2;
sp = stack;
firstcode = oldcode = GetCode(src, code_size, FALSE);
return firstcode;
} else if (code == end_code) {
int count;
unsigned char buf[260];
if (ZeroDataBlock)
return -2;
while ((count = GetDataBlock(src, buf)) > 0)
;
if (count != 0) {
/*
* pm_message("missing EOD in data stream (common occurence)");
*/
}
return -2;
}
incode = code;
if (code >= max_code) {
*sp++ = firstcode;
code = oldcode;
}
while (code >= clear_code) {
/* Guard against buffer overruns */
if (code < 0 || code >= (1 << MAX_LWZ_BITS)) {
RWSetMsg("invalid LWZ data");
return -3;
}
*sp++ = table[1][code];
if (code == table[0][code])
RWSetMsg("circular table entry BIG ERROR");
code = table[0][code];
}
/* Guard against buffer overruns */
if (code < 0 || code >= (1 << MAX_LWZ_BITS)) {
RWSetMsg("invalid LWZ data");
return -4;
}
*sp++ = firstcode = table[1][code];
if ((code = max_code) < (1 << MAX_LWZ_BITS)) {
table[0][code] = oldcode;
table[1][code] = firstcode;
++max_code;
if ((max_code >= max_code_size) &&
(max_code_size < (1 << MAX_LWZ_BITS))) {
max_code_size *= 2;
++code_size;
}
}
oldcode = incode;
if (sp > stack)
return *--sp;
}
return code;
}
static Image *
ReadImage(SDL_RWops * src, int len, int height, int cmapSize,
unsigned char cmap[3][MAXCOLORMAPSIZE],
int gray, int interlace, int ignore)
{
Image *image;
unsigned char c;
int i, v;
int xpos = 0, ypos = 0, pass = 0;
/*
** Initialize the compression routines
*/
if (!ReadOK(src, &c, 1)) {
RWSetMsg("EOF / read error on image data");
return NULL;
}
if (LWZReadByte(src, TRUE, c) < 0) {
RWSetMsg("error reading image");
return NULL;
}
/*
** If this is an "uninteresting picture" ignore it.
*/
if (ignore) {
while (LWZReadByte(src, FALSE, c) >= 0)
;
return NULL;
}
image = ImageNewCmap(len, height, cmapSize);
for (i = 0; i < cmapSize; i++)
ImageSetCmap(image, i, cmap[CM_RED][i],
cmap[CM_GREEN][i], cmap[CM_BLUE][i]);
while ((v = LWZReadByte(src, FALSE, c)) >= 0) {
#ifdef USED_BY_SDL
((Uint8 *)image->pixels)[xpos + ypos * image->pitch] = v;
#else
image->data[xpos + ypos * len] = v;
#endif
++xpos;
if (xpos == len) {
xpos = 0;
if (interlace) {
switch (pass) {
case 0:
case 1:
ypos += 8;
break;
case 2:
ypos += 4;
break;
case 3:
ypos += 2;
break;
}
if (ypos >= height) {
++pass;
switch (pass) {
case 1:
ypos = 4;
break;
case 2:
ypos = 2;
break;
case 3:
ypos = 1;
break;
default:
goto fini;
}
}
} else {
++ypos;
}
}
if (ypos >= height)
break;
}
fini:
return image;
}
#else
/* See if an image is contained in a data source */
int IMG_isGIF(SDL_RWops *src)
{
return(0);
}
/* Load a GIF type image from an SDL datasource */
SDL_Surface *IMG_LoadGIF_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_GIF */
#endif /* !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND) */
libs/SDL2_image-2.0.0/IMG_jpg.c
-495
View File
@@ -1,495 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#if !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)
/* This is a JPEG image file loading framework */
#include <stdio.h>
#include <string.h>
#include <setjmp.h>
#include "SDL_image.h"
#ifdef LOAD_JPG
#include <jpeglib.h>
#ifdef JPEG_TRUE /* MinGW version of jpeg-8.x renamed TRUE to JPEG_TRUE etc. */
typedef JPEG_boolean boolean;
#define TRUE JPEG_TRUE
#define FALSE JPEG_FALSE
#endif
/* Define this for fast loading and not as good image quality */
/*#define FAST_JPEG*/
/* Define this for quicker (but less perfect) JPEG identification */
#define FAST_IS_JPEG
static struct {
int loaded;
void *handle;
void (*jpeg_calc_output_dimensions) (j_decompress_ptr cinfo);
void (*jpeg_CreateDecompress) (j_decompress_ptr cinfo, int version, size_t structsize);
void (*jpeg_destroy_decompress) (j_decompress_ptr cinfo);
boolean (*jpeg_finish_decompress) (j_decompress_ptr cinfo);
int (*jpeg_read_header) (j_decompress_ptr cinfo, boolean require_image);
JDIMENSION (*jpeg_read_scanlines) (j_decompress_ptr cinfo, JSAMPARRAY scanlines, JDIMENSION max_lines);
boolean (*jpeg_resync_to_restart) (j_decompress_ptr cinfo, int desired);
boolean (*jpeg_start_decompress) (j_decompress_ptr cinfo);
struct jpeg_error_mgr * (*jpeg_std_error) (struct jpeg_error_mgr * err);
} lib;
#ifdef LOAD_JPG_DYNAMIC
int IMG_InitJPG()
{
if ( lib.loaded == 0 ) {
lib.handle = SDL_LoadObject(LOAD_JPG_DYNAMIC);
if ( lib.handle == NULL ) {
return -1;
}
lib.jpeg_calc_output_dimensions =
(void (*) (j_decompress_ptr))
SDL_LoadFunction(lib.handle, "jpeg_calc_output_dimensions");
if ( lib.jpeg_calc_output_dimensions == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_CreateDecompress =
(void (*) (j_decompress_ptr, int, size_t))
SDL_LoadFunction(lib.handle, "jpeg_CreateDecompress");
if ( lib.jpeg_CreateDecompress == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_destroy_decompress =
(void (*) (j_decompress_ptr))
SDL_LoadFunction(lib.handle, "jpeg_destroy_decompress");
if ( lib.jpeg_destroy_decompress == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_finish_decompress =
(boolean (*) (j_decompress_ptr))
SDL_LoadFunction(lib.handle, "jpeg_finish_decompress");
if ( lib.jpeg_finish_decompress == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_read_header =
(int (*) (j_decompress_ptr, boolean))
SDL_LoadFunction(lib.handle, "jpeg_read_header");
if ( lib.jpeg_read_header == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_read_scanlines =
(JDIMENSION (*) (j_decompress_ptr, JSAMPARRAY, JDIMENSION))
SDL_LoadFunction(lib.handle, "jpeg_read_scanlines");
if ( lib.jpeg_read_scanlines == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_resync_to_restart =
(boolean (*) (j_decompress_ptr, int))
SDL_LoadFunction(lib.handle, "jpeg_resync_to_restart");
if ( lib.jpeg_resync_to_restart == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_start_decompress =
(boolean (*) (j_decompress_ptr))
SDL_LoadFunction(lib.handle, "jpeg_start_decompress");
if ( lib.jpeg_start_decompress == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_std_error =
(struct jpeg_error_mgr * (*) (struct jpeg_error_mgr *))
SDL_LoadFunction(lib.handle, "jpeg_std_error");
if ( lib.jpeg_std_error == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
}
++lib.loaded;
return 0;
}
void IMG_QuitJPG()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
SDL_UnloadObject(lib.handle);
}
--lib.loaded;
}
#else
int IMG_InitJPG()
{
if ( lib.loaded == 0 ) {
lib.jpeg_calc_output_dimensions = jpeg_calc_output_dimensions;
lib.jpeg_CreateDecompress = jpeg_CreateDecompress;
lib.jpeg_destroy_decompress = jpeg_destroy_decompress;
lib.jpeg_finish_decompress = jpeg_finish_decompress;
lib.jpeg_read_header = jpeg_read_header;
lib.jpeg_read_scanlines = jpeg_read_scanlines;
lib.jpeg_resync_to_restart = jpeg_resync_to_restart;
lib.jpeg_start_decompress = jpeg_start_decompress;
lib.jpeg_std_error = jpeg_std_error;
}
++lib.loaded;
return 0;
}
void IMG_QuitJPG()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
}
--lib.loaded;
}
#endif /* LOAD_JPG_DYNAMIC */
/* See if an image is contained in a data source */
int IMG_isJPG(SDL_RWops *src)
{
Sint64 start;
int is_JPG;
int in_scan;
Uint8 magic[4];
/* This detection code is by Steaphan Greene <stea@cs.binghamton.edu> */
/* Blame me, not Sam, if this doesn't work right. */
/* And don't forget to report the problem to the the sdl list too! */
if ( !src )
return 0;
start = SDL_RWtell(src);
is_JPG = 0;
in_scan = 0;
if ( SDL_RWread(src, magic, 2, 1) ) {
if ( (magic[0] == 0xFF) && (magic[1] == 0xD8) ) {
is_JPG = 1;
while (is_JPG == 1) {
if(SDL_RWread(src, magic, 1, 2) != 2) {
is_JPG = 0;
} else if( (magic[0] != 0xFF) && (in_scan == 0) ) {
is_JPG = 0;
} else if( (magic[0] != 0xFF) || (magic[1] == 0xFF) ) {
/* Extra padding in JPEG (legal) */
/* or this is data and we are scanning */
SDL_RWseek(src, -1, RW_SEEK_CUR);
} else if(magic[1] == 0xD9) {
/* Got to end of good JPEG */
break;
} else if( (in_scan == 1) && (magic[1] == 0x00) ) {
/* This is an encoded 0xFF within the data */
} else if( (magic[1] >= 0xD0) && (magic[1] < 0xD9) ) {
/* These have nothing else */
} else if(SDL_RWread(src, magic+2, 1, 2) != 2) {
is_JPG = 0;
} else {
/* Yes, it's big-endian */
Sint64 innerStart;
Uint32 size;
Sint64 end;
innerStart = SDL_RWtell(src);
size = (magic[2] << 8) + magic[3];
end = SDL_RWseek(src, size-2, RW_SEEK_CUR);
if ( end != innerStart + size - 2 ) is_JPG = 0;
if ( magic[1] == 0xDA ) {
/* Now comes the actual JPEG meat */
#ifdef FAST_IS_JPEG
/* Ok, I'm convinced. It is a JPEG. */
break;
#else
/* I'm not convinced. Prove it! */
in_scan = 1;
#endif
}
}
}
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_JPG);
}
#define INPUT_BUFFER_SIZE 4096
typedef struct {
struct jpeg_source_mgr pub;
SDL_RWops *ctx;
Uint8 buffer[INPUT_BUFFER_SIZE];
} my_source_mgr;
/*
* Initialize source --- called by jpeg_read_header
* before any data is actually read.
*/
static void init_source (j_decompress_ptr cinfo)
{
/* We don't actually need to do anything */
return;
}
/*
* Fill the input buffer --- called whenever buffer is emptied.
*/
static boolean fill_input_buffer (j_decompress_ptr cinfo)
{
my_source_mgr * src = (my_source_mgr *) cinfo->src;
int nbytes;
nbytes = SDL_RWread(src->ctx, src->buffer, 1, INPUT_BUFFER_SIZE);
if (nbytes <= 0) {
/* Insert a fake EOI marker */
src->buffer[0] = (Uint8) 0xFF;
src->buffer[1] = (Uint8) JPEG_EOI;
nbytes = 2;
}
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = nbytes;
return TRUE;
}
/*
* Skip data --- used to skip over a potentially large amount of
* uninteresting data (such as an APPn marker).
*
* Writers of suspendable-input applications must note that skip_input_data
* is not granted the right to give a suspension return. If the skip extends
* beyond the data currently in the buffer, the buffer can be marked empty so
* that the next read will cause a fill_input_buffer call that can suspend.
* Arranging for additional bytes to be discarded before reloading the input
* buffer is the application writer's problem.
*/
static void skip_input_data (j_decompress_ptr cinfo, long num_bytes)
{
my_source_mgr * src = (my_source_mgr *) cinfo->src;
/* Just a dumb implementation for now. Could use fseek() except
* it doesn't work on pipes. Not clear that being smart is worth
* any trouble anyway --- large skips are infrequent.
*/
if (num_bytes > 0) {
while (num_bytes > (long) src->pub.bytes_in_buffer) {
num_bytes -= (long) src->pub.bytes_in_buffer;
(void) src->pub.fill_input_buffer(cinfo);
/* note we assume that fill_input_buffer will never
* return FALSE, so suspension need not be handled.
*/
}
src->pub.next_input_byte += (size_t) num_bytes;
src->pub.bytes_in_buffer -= (size_t) num_bytes;
}
}
/*
* Terminate source --- called by jpeg_finish_decompress
* after all data has been read.
*/
static void term_source (j_decompress_ptr cinfo)
{
/* We don't actually need to do anything */
return;
}
/*
* Prepare for input from a stdio stream.
* The caller must have already opened the stream, and is responsible
* for closing it after finishing decompression.
*/
static void jpeg_SDL_RW_src (j_decompress_ptr cinfo, SDL_RWops *ctx)
{
my_source_mgr *src;
/* The source object and input buffer are made permanent so that a series
* of JPEG images can be read from the same file by calling jpeg_stdio_src
* only before the first one. (If we discarded the buffer at the end of
* one image, we'd likely lose the start of the next one.)
* This makes it unsafe to use this manager and a different source
* manager serially with the same JPEG object. Caveat programmer.
*/
if (cinfo->src == NULL) { /* first time for this JPEG object? */
cinfo->src = (struct jpeg_source_mgr *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
sizeof(my_source_mgr));
src = (my_source_mgr *) cinfo->src;
}
src = (my_source_mgr *) cinfo->src;
src->pub.init_source = init_source;
src->pub.fill_input_buffer = fill_input_buffer;
src->pub.skip_input_data = skip_input_data;
src->pub.resync_to_restart = lib.jpeg_resync_to_restart; /* use default method */
src->pub.term_source = term_source;
src->ctx = ctx;
src->pub.bytes_in_buffer = 0; /* forces fill_input_buffer on first read */
src->pub.next_input_byte = NULL; /* until buffer loaded */
}
struct my_error_mgr {
struct jpeg_error_mgr errmgr;
jmp_buf escape;
};
static void my_error_exit(j_common_ptr cinfo)
{
struct my_error_mgr *err = (struct my_error_mgr *)cinfo->err;
longjmp(err->escape, 1);
}
static void output_no_message(j_common_ptr cinfo)
{
/* do nothing */
}
/* Load a JPEG type image from an SDL datasource */
SDL_Surface *IMG_LoadJPG_RW(SDL_RWops *src)
{
Sint64 start;
struct jpeg_decompress_struct cinfo;
JSAMPROW rowptr[1];
SDL_Surface *volatile surface = NULL;
struct my_error_mgr jerr;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( !IMG_Init(IMG_INIT_JPG) ) {
return NULL;
}
/* Create a decompression structure and load the JPEG header */
cinfo.err = lib.jpeg_std_error(&jerr.errmgr);
jerr.errmgr.error_exit = my_error_exit;
jerr.errmgr.output_message = output_no_message;
if(setjmp(jerr.escape)) {
/* If we get here, libjpeg found an error */
lib.jpeg_destroy_decompress(&cinfo);
if ( surface != NULL ) {
SDL_FreeSurface(surface);
}
SDL_RWseek(src, start, RW_SEEK_SET);
IMG_SetError("JPEG loading error");
return NULL;
}
lib.jpeg_create_decompress(&cinfo);
jpeg_SDL_RW_src(&cinfo, src);
lib.jpeg_read_header(&cinfo, TRUE);
if(cinfo.num_components == 4) {
/* Set 32-bit Raw output */
cinfo.out_color_space = JCS_CMYK;
cinfo.quantize_colors = FALSE;
lib.jpeg_calc_output_dimensions(&cinfo);
/* Allocate an output surface to hold the image */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
cinfo.output_width, cinfo.output_height, 32,
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000);
#else
0x0000FF00, 0x00FF0000, 0xFF000000, 0x000000FF);
#endif
} else {
/* Set 24-bit RGB output */
cinfo.out_color_space = JCS_RGB;
cinfo.quantize_colors = FALSE;
#ifdef FAST_JPEG
cinfo.scale_num = 1;
cinfo.scale_denom = 1;
cinfo.dct_method = JDCT_FASTEST;
cinfo.do_fancy_upsampling = FALSE;
#endif
lib.jpeg_calc_output_dimensions(&cinfo);
/* Allocate an output surface to hold the image */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
cinfo.output_width, cinfo.output_height, 24,
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
0x0000FF, 0x00FF00, 0xFF0000,
#else
0xFF0000, 0x00FF00, 0x0000FF,
#endif
0);
}
if ( surface == NULL ) {
lib.jpeg_destroy_decompress(&cinfo);
SDL_RWseek(src, start, RW_SEEK_SET);
IMG_SetError("Out of memory");
return NULL;
}
/* Decompress the image */
lib.jpeg_start_decompress(&cinfo);
while ( cinfo.output_scanline < cinfo.output_height ) {
rowptr[0] = (JSAMPROW)(Uint8 *)surface->pixels +
cinfo.output_scanline * surface->pitch;
lib.jpeg_read_scanlines(&cinfo, rowptr, (JDIMENSION) 1);
}
lib.jpeg_finish_decompress(&cinfo);
lib.jpeg_destroy_decompress(&cinfo);
return(surface);
}
#else
int IMG_InitJPG()
{
IMG_SetError("JPEG images are not supported");
return(-1);
}
void IMG_QuitJPG()
{
}
/* See if an image is contained in a data source */
int IMG_isJPG(SDL_RWops *src)
{
return(0);
}
/* Load a JPEG type image from an SDL datasource */
SDL_Surface *IMG_LoadJPG_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_JPG */
#endif /* !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND) */
libs/SDL2_image-2.0.0/IMG_lbm.c
-499
View File
@@ -1,499 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is a ILBM image file loading framework
Load IFF pictures, PBM & ILBM packing methods, with or without stencil
Written by Daniel Morais ( Daniel AT Morais DOT com ) in September 2001.
24 bits ILBM files support added by Marc Le Douarain (http://www.multimania.com/mavati)
in December 2002.
EHB and HAM (specific Amiga graphic chip modes) support added by Marc Le Douarain
(http://www.multimania.com/mavati) in December 2003.
Stencil and colorkey fixes by David Raulo (david.raulo AT free DOT fr) in February 2004.
Buffer overflow fix in RLE decompression by David Raulo in January 2008.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SDL_endian.h"
#include "SDL_image.h"
#ifdef LOAD_LBM
#define MAXCOLORS 256
/* Structure for an IFF picture ( BMHD = Bitmap Header ) */
typedef struct
{
Uint16 w, h; /* width & height of the bitmap in pixels */
Sint16 x, y; /* screen coordinates of the bitmap */
Uint8 planes; /* number of planes of the bitmap */
Uint8 mask; /* mask type ( 0 => no mask ) */
Uint8 tcomp; /* compression type */
Uint8 pad1; /* dummy value, for padding */
Uint16 tcolor; /* transparent color */
Uint8 xAspect, /* pixel aspect ratio */
yAspect;
Sint16 Lpage; /* width of the screen in pixels */
Sint16 Hpage; /* height of the screen in pixels */
} BMHD;
int IMG_isLBM( SDL_RWops *src )
{
Sint64 start;
int is_LBM;
Uint8 magic[4+4+4];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_LBM = 0;
if ( SDL_RWread( src, magic, sizeof(magic), 1 ) )
{
if ( !SDL_memcmp( magic, "FORM", 4 ) &&
( !SDL_memcmp( magic + 8, "PBM ", 4 ) ||
!SDL_memcmp( magic + 8, "ILBM", 4 ) ) )
{
is_LBM = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return( is_LBM );
}
SDL_Surface *IMG_LoadLBM_RW( SDL_RWops *src )
{
Sint64 start;
SDL_Surface *Image;
Uint8 id[4], pbm, colormap[MAXCOLORS*3], *MiniBuf, *ptr, count, color, msk;
Uint32 size, bytesloaded, nbcolors;
Uint32 i, j, bytesperline, nbplanes, stencil, plane, h;
Uint32 remainingbytes;
Uint32 width;
BMHD bmhd;
char *error;
Uint8 flagHAM,flagEHB;
Image = NULL;
error = NULL;
MiniBuf = NULL;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( !SDL_RWread( src, id, 4, 1 ) )
{
error="error reading IFF chunk";
goto done;
}
/* Should be the size of the file minus 4+4 ( 'FORM'+size ) */
if ( !SDL_RWread( src, &size, 4, 1 ) )
{
error="error reading IFF chunk size";
goto done;
}
/* As size is not used here, no need to swap it */
if ( SDL_memcmp( id, "FORM", 4 ) != 0 )
{
error="not a IFF file";
goto done;
}
if ( !SDL_RWread( src, id, 4, 1 ) )
{
error="error reading IFF chunk";
goto done;
}
pbm = 0;
/* File format : PBM=Packed Bitmap, ILBM=Interleaved Bitmap */
if ( !SDL_memcmp( id, "PBM ", 4 ) ) pbm = 1;
else if ( SDL_memcmp( id, "ILBM", 4 ) )
{
error="not a IFF picture";
goto done;
}
nbcolors = 0;
SDL_memset( &bmhd, 0, sizeof( BMHD ) );
flagHAM = 0;
flagEHB = 0;
while ( SDL_memcmp( id, "BODY", 4 ) != 0 )
{
if ( !SDL_RWread( src, id, 4, 1 ) )
{
error="error reading IFF chunk";
goto done;
}
if ( !SDL_RWread( src, &size, 4, 1 ) )
{
error="error reading IFF chunk size";
goto done;
}
bytesloaded = 0;
size = SDL_SwapBE32( size );
if ( !SDL_memcmp( id, "BMHD", 4 ) ) /* Bitmap header */
{
if ( !SDL_RWread( src, &bmhd, sizeof( BMHD ), 1 ) )
{
error="error reading BMHD chunk";
goto done;
}
bytesloaded = sizeof( BMHD );
bmhd.w = SDL_SwapBE16( bmhd.w );
bmhd.h = SDL_SwapBE16( bmhd.h );
bmhd.x = SDL_SwapBE16( bmhd.x );
bmhd.y = SDL_SwapBE16( bmhd.y );
bmhd.tcolor = SDL_SwapBE16( bmhd.tcolor );
bmhd.Lpage = SDL_SwapBE16( bmhd.Lpage );
bmhd.Hpage = SDL_SwapBE16( bmhd.Hpage );
}
if ( !SDL_memcmp( id, "CMAP", 4 ) ) /* palette ( Color Map ) */
{
if ( !SDL_RWread( src, &colormap, size, 1 ) )
{
error="error reading CMAP chunk";
goto done;
}
bytesloaded = size;
nbcolors = size / 3;
}
if ( !SDL_memcmp( id, "CAMG", 4 ) ) /* Amiga ViewMode */
{
Uint32 viewmodes;
if ( !SDL_RWread( src, &viewmodes, sizeof(viewmodes), 1 ) )
{
error="error reading CAMG chunk";
goto done;
}
bytesloaded = size;
viewmodes = SDL_SwapBE32( viewmodes );
if ( viewmodes & 0x0800 )
flagHAM = 1;
if ( viewmodes & 0x0080 )
flagEHB = 1;
}
if ( SDL_memcmp( id, "BODY", 4 ) )
{
if ( size & 1 ) ++size; /* padding ! */
size -= bytesloaded;
/* skip the remaining bytes of this chunk */
if ( size ) SDL_RWseek( src, size, RW_SEEK_CUR );
}
}
/* compute some usefull values, based on the bitmap header */
width = ( bmhd.w + 15 ) & 0xFFFFFFF0; /* Width in pixels modulo 16 */
bytesperline = ( ( bmhd.w + 15 ) / 16 ) * 2;
nbplanes = bmhd.planes;
if ( pbm ) /* File format : 'Packed Bitmap' */
{
bytesperline *= 8;
nbplanes = 1;
}
stencil = (bmhd.mask & 1); /* There is a mask ( 'stencil' ) */
/* Allocate memory for a temporary buffer ( used for
decompression/deinterleaving ) */
MiniBuf = (Uint8 *)SDL_malloc( bytesperline * (nbplanes + stencil) );
if ( MiniBuf == NULL )
{
error="no enough memory for temporary buffer";
goto done;
}
if ( ( Image = SDL_CreateRGBSurface( SDL_SWSURFACE, width, bmhd.h, (bmhd.planes==24 || flagHAM==1)?24:8, 0, 0, 0, 0 ) ) == NULL )
goto done;
if ( bmhd.mask & 2 ) /* There is a transparent color */
SDL_SetColorKey( Image, SDL_TRUE, bmhd.tcolor );
/* Update palette informations */
/* There is no palette in 24 bits ILBM file */
if ( nbcolors>0 && flagHAM==0 )
{
/* FIXME: Should this include the stencil? See comment below */
int nbrcolorsfinal = 1 << (nbplanes + stencil);
ptr = &colormap[0];
for ( i=0; i<nbcolors; i++ )
{
Image->format->palette->colors[i].r = *ptr++;
Image->format->palette->colors[i].g = *ptr++;
Image->format->palette->colors[i].b = *ptr++;
}
/* Amiga EHB mode (Extra-Half-Bright) */
/* 6 bitplanes mode with a 32 colors palette */
/* The 32 last colors are the same but divided by 2 */
/* Some Amiga pictures save 64 colors with 32 last wrong colors, */
/* they shouldn't !, and here we overwrite these 32 bad colors. */
if ( (nbcolors==32 || flagEHB ) && (1<<bmhd.planes)==64 )
{
nbcolors = 64;
ptr = &colormap[0];
for ( i=32; i<64; i++ )
{
Image->format->palette->colors[i].r = (*ptr++)/2;
Image->format->palette->colors[i].g = (*ptr++)/2;
Image->format->palette->colors[i].b = (*ptr++)/2;
}
}
/* If nbcolors < 2^nbplanes, repeat the colormap */
/* This happens when pictures have a stencil mask */
if ( nbrcolorsfinal > (1<<bmhd.planes) ) {
nbrcolorsfinal = (1<<bmhd.planes);
}
for ( i=nbcolors; i < (Uint32)nbrcolorsfinal; i++ )
{
Image->format->palette->colors[i].r = Image->format->palette->colors[i%nbcolors].r;
Image->format->palette->colors[i].g = Image->format->palette->colors[i%nbcolors].g;
Image->format->palette->colors[i].b = Image->format->palette->colors[i%nbcolors].b;
}
if ( !pbm )
Image->format->palette->ncolors = nbrcolorsfinal;
}
/* Get the bitmap */
for ( h=0; h < bmhd.h; h++ )
{
/* uncompress the datas of each planes */
for ( plane=0; plane < (nbplanes+stencil); plane++ )
{
ptr = MiniBuf + ( plane * bytesperline );
remainingbytes = bytesperline;
if ( bmhd.tcomp == 1 ) /* Datas are compressed */
{
do
{
if ( !SDL_RWread( src, &count, 1, 1 ) )
{
error="error reading BODY chunk";
goto done;
}
if ( count & 0x80 )
{
count ^= 0xFF;
count += 2; /* now it */
if ( ( count > remainingbytes ) || !SDL_RWread( src, &color, 1, 1 ) )
{
error="error reading BODY chunk";
goto done;
}
SDL_memset( ptr, color, count );
}
else
{
++count;
if ( ( count > remainingbytes ) || !SDL_RWread( src, ptr, count, 1 ) )
{
error="error reading BODY chunk";
goto done;
}
}
ptr += count;
remainingbytes -= count;
} while ( remainingbytes > 0 );
}
else
{
if ( !SDL_RWread( src, ptr, bytesperline, 1 ) )
{
error="error reading BODY chunk";
goto done;
}
}
}
/* One line has been read, store it ! */
ptr = (Uint8 *)Image->pixels;
if ( nbplanes==24 || flagHAM==1 )
ptr += h * width * 3;
else
ptr += h * width;
if ( pbm ) /* File format : 'Packed Bitmap' */
{
SDL_memcpy( ptr, MiniBuf, width );
}
else /* We have to un-interlace the bits ! */
{
if ( nbplanes!=24 && flagHAM==0 )
{
size = ( width + 7 ) / 8;
for ( i=0; i < size; i++ )
{
memset( ptr, 0, 8 );
for ( plane=0; plane < (nbplanes + stencil); plane++ )
{
color = *( MiniBuf + i + ( plane * bytesperline ) );
msk = 0x80;
for ( j=0; j<8; j++ )
{
if ( ( plane + j ) <= 7 ) ptr[j] |= (Uint8)( color & msk ) >> ( 7 - plane - j );
else ptr[j] |= (Uint8)( color & msk ) << ( plane + j - 7 );
msk >>= 1;
}
}
ptr += 8;
}
}
else
{
Uint32 finalcolor = 0;
size = ( width + 7 ) / 8;
/* 24 bitplanes ILBM : R0...R7,G0...G7,B0...B7 */
/* or HAM (6 bitplanes) or HAM8 (8 bitplanes) modes */
for ( i=0; i<width; i=i+8 )
{
Uint8 maskBit = 0x80;
for ( j=0; j<8; j++ )
{
Uint32 pixelcolor = 0;
Uint32 maskColor = 1;
Uint8 dataBody;
for ( plane=0; plane < nbplanes; plane++ )
{
dataBody = MiniBuf[ plane*size+i/8 ];
if ( dataBody&maskBit )
pixelcolor = pixelcolor | maskColor;
maskColor = maskColor<<1;
}
/* HAM : 12 bits RGB image (4 bits per color component) */
/* HAM8 : 18 bits RGB image (6 bits per color component) */
if ( flagHAM )
{
switch( pixelcolor>>(nbplanes-2) )
{
case 0: /* take direct color from palette */
finalcolor = colormap[ pixelcolor*3 ] + (colormap[ pixelcolor*3+1 ]<<8) + (colormap[ pixelcolor*3+2 ]<<16);
break;
case 1: /* modify only blue component */
finalcolor = finalcolor&0x00FFFF;
finalcolor = finalcolor | (pixelcolor<<(16+(10-nbplanes)));
break;
case 2: /* modify only red component */
finalcolor = finalcolor&0xFFFF00;
finalcolor = finalcolor | pixelcolor<<(10-nbplanes);
break;
case 3: /* modify only green component */
finalcolor = finalcolor&0xFF00FF;
finalcolor = finalcolor | (pixelcolor<<(8+(10-nbplanes)));
break;
}
}
else
{
finalcolor = pixelcolor;
}
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
*ptr++ = (Uint8)(finalcolor>>16);
*ptr++ = (Uint8)(finalcolor>>8);
*ptr++ = (Uint8)(finalcolor);
#else
*ptr++ = (Uint8)(finalcolor);
*ptr++ = (Uint8)(finalcolor>>8);
*ptr++ = (Uint8)(finalcolor>>16);
#endif
maskBit = maskBit>>1;
}
}
}
}
}
done:
if ( MiniBuf ) SDL_free( MiniBuf );
if ( error )
{
SDL_RWseek(src, start, RW_SEEK_SET);
if ( Image ) {
SDL_FreeSurface( Image );
Image = NULL;
}
IMG_SetError( error );
}
return( Image );
}
#else /* LOAD_LBM */
/* See if an image is contained in a data source */
int IMG_isLBM(SDL_RWops *src)
{
return(0);
}
/* Load an IFF type image from an SDL datasource */
SDL_Surface *IMG_LoadLBM_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_LBM */
libs/SDL2_image-2.0.0/IMG_pcx.c
-276
View File
@@ -1,276 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/*
* PCX file reader:
* Supports:
* 1..4 bits/pixel in multiplanar format (1 bit/plane/pixel)
* 8 bits/pixel in single-planar format (8 bits/plane/pixel)
* 24 bits/pixel in 3-plane format (8 bits/plane/pixel)
*
* (The <8bpp formats are expanded to 8bpp surfaces)
*
* Doesn't support:
* single-planar packed-pixel formats other than 8bpp
* 4-plane 32bpp format with a fourth "intensity" plane
*/
#include <stdio.h>
#include <stdlib.h>
#include "SDL_endian.h"
#include "SDL_image.h"
#ifdef LOAD_PCX
struct PCXheader {
Uint8 Manufacturer;
Uint8 Version;
Uint8 Encoding;
Uint8 BitsPerPixel;
Sint16 Xmin, Ymin, Xmax, Ymax;
Sint16 HDpi, VDpi;
Uint8 Colormap[48];
Uint8 Reserved;
Uint8 NPlanes;
Sint16 BytesPerLine;
Sint16 PaletteInfo;
Sint16 HscreenSize;
Sint16 VscreenSize;
Uint8 Filler[54];
};
/* See if an image is contained in a data source */
int IMG_isPCX(SDL_RWops *src)
{
Sint64 start;
int is_PCX;
const int ZSoft_Manufacturer = 10;
const int PC_Paintbrush_Version = 5;
const int PCX_Uncompressed_Encoding = 0;
const int PCX_RunLength_Encoding = 1;
struct PCXheader pcxh;
if ( !src )
return 0;
start = SDL_RWtell(src);
is_PCX = 0;
if ( SDL_RWread(src, &pcxh, sizeof(pcxh), 1) == 1 ) {
if ( (pcxh.Manufacturer == ZSoft_Manufacturer) &&
(pcxh.Version == PC_Paintbrush_Version) &&
(pcxh.Encoding == PCX_RunLength_Encoding ||
pcxh.Encoding == PCX_Uncompressed_Encoding) ) {
is_PCX = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_PCX);
}
/* Load a PCX type image from an SDL datasource */
SDL_Surface *IMG_LoadPCX_RW(SDL_RWops *src)
{
Sint64 start;
struct PCXheader pcxh;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
Uint32 Amask;
SDL_Surface *surface = NULL;
int width, height;
int y, bpl;
Uint8 *row, *buf = NULL;
char *error = NULL;
int bits, src_bits;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( ! SDL_RWread(src, &pcxh, sizeof(pcxh), 1) ) {
error = "file truncated";
goto done;
}
pcxh.Xmin = SDL_SwapLE16(pcxh.Xmin);
pcxh.Ymin = SDL_SwapLE16(pcxh.Ymin);
pcxh.Xmax = SDL_SwapLE16(pcxh.Xmax);
pcxh.Ymax = SDL_SwapLE16(pcxh.Ymax);
pcxh.BytesPerLine = SDL_SwapLE16(pcxh.BytesPerLine);
/* Create the surface of the appropriate type */
width = (pcxh.Xmax - pcxh.Xmin) + 1;
height = (pcxh.Ymax - pcxh.Ymin) + 1;
Rmask = Gmask = Bmask = Amask = 0;
src_bits = pcxh.BitsPerPixel * pcxh.NPlanes;
if((pcxh.BitsPerPixel == 1 && pcxh.NPlanes >= 1 && pcxh.NPlanes <= 4)
|| (pcxh.BitsPerPixel == 8 && pcxh.NPlanes == 1)) {
bits = 8;
} else if(pcxh.BitsPerPixel == 8 && pcxh.NPlanes == 3) {
bits = 24;
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
Rmask = 0x000000FF;
Gmask = 0x0000FF00;
Bmask = 0x00FF0000;
#else
Rmask = 0xFF0000;
Gmask = 0x00FF00;
Bmask = 0x0000FF;
#endif
} else {
error = "unsupported PCX format";
goto done;
}
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height,
bits, Rmask, Gmask, Bmask, Amask);
if ( surface == NULL )
goto done;
bpl = pcxh.NPlanes * pcxh.BytesPerLine;
if (bpl > surface->pitch) {
error = "bytes per line is too large (corrupt?)";
}
buf = (Uint8 *)SDL_malloc(bpl);
row = (Uint8 *)surface->pixels;
for ( y=0; y<surface->h; ++y ) {
/* decode a scan line to a temporary buffer first */
int i, count = 0;
Uint8 ch;
Uint8 *dst = (src_bits == 8) ? row : buf;
if ( pcxh.Encoding == 0 ) {
if(!SDL_RWread(src, dst, bpl, 1)) {
error = "file truncated";
goto done;
}
} else {
for(i = 0; i < bpl; i++) {
if(!count) {
if(!SDL_RWread(src, &ch, 1, 1)) {
error = "file truncated";
goto done;
}
if( (ch & 0xc0) == 0xc0) {
count = ch & 0x3f;
if(!SDL_RWread(src, &ch, 1, 1)) {
error = "file truncated";
goto done;
}
} else
count = 1;
}
dst[i] = ch;
count--;
}
}
if(src_bits <= 4) {
/* expand planes to 1 byte/pixel */
Uint8 *innerSrc = buf;
int plane;
for(plane = 0; plane < pcxh.NPlanes; plane++) {
int j, k, x = 0;
for(j = 0; j < pcxh.BytesPerLine; j++) {
Uint8 byte = *innerSrc++;
for(k = 7; k >= 0; k--) {
unsigned bit = (byte >> k) & 1;
/* skip padding bits */
if (j * 8 + k >= width)
continue;
row[x++] |= bit << plane;
}
}
}
} else if(src_bits == 24) {
/* de-interlace planes */
Uint8 *innerSrc = buf;
int plane;
for(plane = 0; plane < pcxh.NPlanes; plane++) {
int x;
dst = row + plane;
for(x = 0; x < width; x++) {
*dst = *innerSrc++;
dst += pcxh.NPlanes;
}
}
}
row += surface->pitch;
}
if(bits == 8) {
SDL_Color *colors = surface->format->palette->colors;
int nc = 1 << src_bits;
int i;
surface->format->palette->ncolors = nc;
if(src_bits == 8) {
Uint8 ch;
/* look for a 256-colour palette */
do {
if ( !SDL_RWread(src, &ch, 1, 1)) {
error = "file truncated";
goto done;
}
} while ( ch != 12 );
for(i = 0; i < 256; i++) {
SDL_RWread(src, &colors[i].r, 1, 1);
SDL_RWread(src, &colors[i].g, 1, 1);
SDL_RWread(src, &colors[i].b, 1, 1);
}
} else {
for(i = 0; i < nc; i++) {
colors[i].r = pcxh.Colormap[i * 3];
colors[i].g = pcxh.Colormap[i * 3 + 1];
colors[i].b = pcxh.Colormap[i * 3 + 2];
}
}
}
done:
SDL_free(buf);
if ( error ) {
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
IMG_SetError(error);
}
return(surface);
}
#else
/* See if an image is contained in a data source */
int IMG_isPCX(SDL_RWops *src)
{
return(0);
}
/* Load a PCX type image from an SDL datasource */
SDL_Surface *IMG_LoadPCX_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_PCX */
libs/SDL2_image-2.0.0/IMG_png.c
-646
View File
@@ -1,646 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is a PNG image file loading framework */
#include "SDL_image.h"
#if !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)
#ifdef LOAD_PNG
/*=============================================================================
File: SDL_png.c
Purpose: A PNG loader and saver for the SDL library
Revision:
Created by: Philippe Lavoie (2 November 1998)
lavoie@zeus.genie.uottawa.ca
Modified by:
Copyright notice:
Copyright (C) 1998 Philippe Lavoie
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Comments: The load and save routine are basically the ones you can find
in the example.c file from the libpng distribution.
Changes:
5/17/99 - Modified to use the new SDL data sources - Sam Lantinga
=============================================================================*/
#include "SDL_endian.h"
#ifdef macintosh
#define MACOS
#endif
#include <png.h>
/* Check for the older version of libpng */
#if (PNG_LIBPNG_VER_MAJOR == 1)
#if (PNG_LIBPNG_VER_MINOR < 4)
#define LIBPNG_VERSION_12
typedef png_bytep png_const_bytep;
#endif
#if (PNG_LIBPNG_VER_MINOR < 6)
typedef png_structp png_const_structrp;
typedef png_infop png_const_inforp;
#endif
#endif
static struct {
int loaded;
void *handle;
png_infop (*png_create_info_struct) (png_const_structrp png_ptr);
png_structp (*png_create_read_struct) (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn);
void (*png_destroy_read_struct) (png_structpp png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr);
png_uint_32 (*png_get_IHDR) (png_const_structrp png_ptr, png_const_inforp info_ptr, png_uint_32 *width, png_uint_32 *height, int *bit_depth, int *color_type, int *interlace_method, int *compression_method, int *filter_method);
png_voidp (*png_get_io_ptr) (png_const_structrp png_ptr);
png_byte (*png_get_channels) (png_const_structrp png_ptr, png_const_inforp info_ptr);
png_uint_32 (*png_get_PLTE) (png_const_structrp png_ptr, png_infop info_ptr, png_colorp *palette, int *num_palette);
png_uint_32 (*png_get_tRNS) (png_const_structrp png_ptr, png_infop info_ptr, png_bytep *trans, int *num_trans, png_color_16p *trans_values);
png_uint_32 (*png_get_valid) (png_const_structrp png_ptr, png_const_inforp info_ptr, png_uint_32 flag);
void (*png_read_image) (png_structp png_ptr, png_bytepp image);
void (*png_read_info) (png_structp png_ptr, png_infop info_ptr);
void (*png_read_update_info) (png_structp png_ptr, png_infop info_ptr);
void (*png_set_expand) (png_structp png_ptr);
void (*png_set_gray_to_rgb) (png_structp png_ptr);
void (*png_set_packing) (png_structp png_ptr);
void (*png_set_read_fn) (png_structp png_ptr, png_voidp io_ptr, png_rw_ptr read_data_fn);
void (*png_set_strip_16) (png_structp png_ptr);
int (*png_sig_cmp) (png_const_bytep sig, png_size_t start, png_size_t num_to_check);
#ifndef LIBPNG_VERSION_12
jmp_buf* (*png_set_longjmp_fn) (png_structp, png_longjmp_ptr, size_t);
#endif
} lib;
#ifdef LOAD_PNG_DYNAMIC
int IMG_InitPNG()
{
if ( lib.loaded == 0 ) {
lib.handle = SDL_LoadObject(LOAD_PNG_DYNAMIC);
if ( lib.handle == NULL ) {
return -1;
}
lib.png_create_info_struct =
(png_infop (*) (png_const_structrp))
SDL_LoadFunction(lib.handle, "png_create_info_struct");
if ( lib.png_create_info_struct == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_create_read_struct =
(png_structp (*) (png_const_charp, png_voidp, png_error_ptr, png_error_ptr))
SDL_LoadFunction(lib.handle, "png_create_read_struct");
if ( lib.png_create_read_struct == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_destroy_read_struct =
(void (*) (png_structpp, png_infopp, png_infopp))
SDL_LoadFunction(lib.handle, "png_destroy_read_struct");
if ( lib.png_destroy_read_struct == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_get_IHDR =
(png_uint_32 (*) (png_const_structrp, png_const_inforp, png_uint_32 *, png_uint_32 *, int *, int *, int *, int *, int *))
SDL_LoadFunction(lib.handle, "png_get_IHDR");
if ( lib.png_get_IHDR == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_get_channels =
(png_byte (*) (png_const_structrp, png_const_inforp))
SDL_LoadFunction(lib.handle, "png_get_channels");
if ( lib.png_get_channels == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_get_io_ptr =
(png_voidp (*) (png_const_structrp))
SDL_LoadFunction(lib.handle, "png_get_io_ptr");
if ( lib.png_get_io_ptr == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_get_PLTE =
(png_uint_32 (*) (png_const_structrp, png_infop, png_colorp *, int *))
SDL_LoadFunction(lib.handle, "png_get_PLTE");
if ( lib.png_get_PLTE == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_get_tRNS =
(png_uint_32 (*) (png_const_structrp, png_infop, png_bytep *, int *, png_color_16p *))
SDL_LoadFunction(lib.handle, "png_get_tRNS");
if ( lib.png_get_tRNS == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_get_valid =
(png_uint_32 (*) (png_const_structrp, png_const_inforp, png_uint_32))
SDL_LoadFunction(lib.handle, "png_get_valid");
if ( lib.png_get_valid == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_read_image =
(void (*) (png_structp, png_bytepp))
SDL_LoadFunction(lib.handle, "png_read_image");
if ( lib.png_read_image == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_read_info =
(void (*) (png_structp, png_infop))
SDL_LoadFunction(lib.handle, "png_read_info");
if ( lib.png_read_info == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_read_update_info =
(void (*) (png_structp, png_infop))
SDL_LoadFunction(lib.handle, "png_read_update_info");
if ( lib.png_read_update_info == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_set_expand =
(void (*) (png_structp))
SDL_LoadFunction(lib.handle, "png_set_expand");
if ( lib.png_set_expand == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_set_gray_to_rgb =
(void (*) (png_structp))
SDL_LoadFunction(lib.handle, "png_set_gray_to_rgb");
if ( lib.png_set_gray_to_rgb == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_set_packing =
(void (*) (png_structp))
SDL_LoadFunction(lib.handle, "png_set_packing");
if ( lib.png_set_packing == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_set_read_fn =
(void (*) (png_structp, png_voidp, png_rw_ptr))
SDL_LoadFunction(lib.handle, "png_set_read_fn");
if ( lib.png_set_read_fn == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_set_strip_16 =
(void (*) (png_structp))
SDL_LoadFunction(lib.handle, "png_set_strip_16");
if ( lib.png_set_strip_16 == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_sig_cmp =
(int (*) (png_const_bytep, png_size_t, png_size_t))
SDL_LoadFunction(lib.handle, "png_sig_cmp");
if ( lib.png_sig_cmp == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
#ifndef LIBPNG_VERSION_12
lib.png_set_longjmp_fn =
(jmp_buf * (*) (png_structp, png_longjmp_ptr, size_t))
SDL_LoadFunction(lib.handle, "png_set_longjmp_fn");
if ( lib.png_set_longjmp_fn == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
#endif
}
++lib.loaded;
return 0;
}
void IMG_QuitPNG()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
SDL_UnloadObject(lib.handle);
}
--lib.loaded;
}
#else
int IMG_InitPNG()
{
if ( lib.loaded == 0 ) {
lib.png_create_info_struct = png_create_info_struct;
lib.png_create_read_struct = png_create_read_struct;
lib.png_destroy_read_struct = png_destroy_read_struct;
lib.png_get_IHDR = png_get_IHDR;
lib.png_get_channels = png_get_channels;
lib.png_get_io_ptr = png_get_io_ptr;
lib.png_get_PLTE = png_get_PLTE;
lib.png_get_tRNS = png_get_tRNS;
lib.png_get_valid = png_get_valid;
lib.png_read_image = png_read_image;
lib.png_read_info = png_read_info;
lib.png_read_update_info = png_read_update_info;
lib.png_set_expand = png_set_expand;
lib.png_set_gray_to_rgb = png_set_gray_to_rgb;
lib.png_set_packing = png_set_packing;
lib.png_set_read_fn = png_set_read_fn;
lib.png_set_strip_16 = png_set_strip_16;
lib.png_sig_cmp = png_sig_cmp;
#ifndef LIBPNG_VERSION_12
lib.png_set_longjmp_fn = png_set_longjmp_fn;
#endif
}
++lib.loaded;
return 0;
}
void IMG_QuitPNG()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
}
--lib.loaded;
}
#endif /* LOAD_PNG_DYNAMIC */
/* See if an image is contained in a data source */
int IMG_isPNG(SDL_RWops *src)
{
Sint64 start;
int is_PNG;
Uint8 magic[4];
if ( !src ) {
return 0;
}
start = SDL_RWtell(src);
is_PNG = 0;
if ( SDL_RWread(src, magic, 1, sizeof(magic)) == sizeof(magic) ) {
if ( magic[0] == 0x89 &&
magic[1] == 'P' &&
magic[2] == 'N' &&
magic[3] == 'G' ) {
is_PNG = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_PNG);
}
/* Load a PNG type image from an SDL datasource */
static void png_read_data(png_structp ctx, png_bytep area, png_size_t size)
{
SDL_RWops *src;
src = (SDL_RWops *)lib.png_get_io_ptr(ctx);
SDL_RWread(src, area, size, 1);
}
SDL_Surface *IMG_LoadPNG_RW(SDL_RWops *src)
{
Sint64 start;
const char *error;
SDL_Surface *volatile surface;
png_structp png_ptr;
png_infop info_ptr;
png_uint_32 width, height;
int bit_depth, color_type, interlace_type, num_channels;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
Uint32 Amask;
SDL_Palette *palette;
png_bytep *volatile row_pointers;
int row, i;
int ckey = -1;
png_color_16 *transv;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( !IMG_Init(IMG_INIT_PNG) ) {
return NULL;
}
/* Initialize the data we will clean up when we're done */
error = NULL;
png_ptr = NULL; info_ptr = NULL; row_pointers = NULL; surface = NULL;
/* Create the PNG loading context structure */
png_ptr = lib.png_create_read_struct(PNG_LIBPNG_VER_STRING,
NULL,NULL,NULL);
if (png_ptr == NULL){
error = "Couldn't allocate memory for PNG file or incompatible PNG dll";
goto done;
}
/* Allocate/initialize the memory for image information. REQUIRED. */
info_ptr = lib.png_create_info_struct(png_ptr);
if (info_ptr == NULL) {
error = "Couldn't create image information for PNG file";
goto done;
}
/* Set error handling if you are using setjmp/longjmp method (this is
* the normal method of doing things with libpng). REQUIRED unless you
* set up your own error handlers in png_create_read_struct() earlier.
*/
#ifndef LIBPNG_VERSION_12
if ( setjmp(*lib.png_set_longjmp_fn(png_ptr, longjmp, sizeof (jmp_buf))) )
#else
if ( setjmp(png_ptr->jmpbuf) )
#endif
{
error = "Error reading the PNG file.";
goto done;
}
/* Set up the input control */
lib.png_set_read_fn(png_ptr, src, png_read_data);
/* Read PNG header info */
lib.png_read_info(png_ptr, info_ptr);
lib.png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth,
&color_type, &interlace_type, NULL, NULL);
/* tell libpng to strip 16 bit/color files down to 8 bits/color */
lib.png_set_strip_16(png_ptr) ;
/* Extract multiple pixels with bit depths of 1, 2, and 4 from a single
* byte into separate bytes (useful for paletted and grayscale images).
*/
lib.png_set_packing(png_ptr);
/* scale greyscale values to the range 0..255 */
if (color_type == PNG_COLOR_TYPE_GRAY)
lib.png_set_expand(png_ptr);
/* For images with a single "transparent colour", set colour key;
if more than one index has transparency, or if partially transparent
entries exist, use full alpha channel */
if (lib.png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) {
int num_trans;
Uint8 *trans;
lib.png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans, &transv);
if (color_type == PNG_COLOR_TYPE_PALETTE) {
/* Check if all tRNS entries are opaque except one */
int j, t = -1;
for (j = 0; j < num_trans; j++) {
if (trans[j] == 0) {
if (t >= 0) {
break;
}
t = j;
} else if (trans[j] != 255) {
break;
}
}
if (j == num_trans) {
/* exactly one transparent index */
ckey = t;
} else {
/* more than one transparent index, or translucency */
lib.png_set_expand(png_ptr);
}
} else {
ckey = 0; /* actual value will be set later */
}
}
if ( color_type == PNG_COLOR_TYPE_GRAY_ALPHA )
lib.png_set_gray_to_rgb(png_ptr);
lib.png_read_update_info(png_ptr, info_ptr);
lib.png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth,
&color_type, &interlace_type, NULL, NULL);
/* Allocate the SDL surface to hold the image */
Rmask = Gmask = Bmask = Amask = 0 ;
num_channels = lib.png_get_channels(png_ptr, info_ptr);
if ( num_channels >= 3 ) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
Rmask = 0x000000FF;
Gmask = 0x0000FF00;
Bmask = 0x00FF0000;
Amask = (num_channels == 4) ? 0xFF000000 : 0;
#else
int s = (num_channels == 4) ? 0 : 8;
Rmask = 0xFF000000 >> s;
Gmask = 0x00FF0000 >> s;
Bmask = 0x0000FF00 >> s;
Amask = 0x000000FF >> s;
#endif
}
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height,
bit_depth*num_channels, Rmask,Gmask,Bmask,Amask);
if ( surface == NULL ) {
error = SDL_GetError();
goto done;
}
if (ckey != -1) {
if (color_type != PNG_COLOR_TYPE_PALETTE) {
/* FIXME: Should these be truncated or shifted down? */
ckey = SDL_MapRGB(surface->format,
(Uint8)transv->red,
(Uint8)transv->green,
(Uint8)transv->blue);
}
SDL_SetColorKey(surface, SDL_TRUE, ckey);
}
/* Create the array of pointers to image data */
row_pointers = (png_bytep*) SDL_malloc(sizeof(png_bytep)*height);
if ( (row_pointers == NULL) ) {
error = "Out of memory";
goto done;
}
for (row = 0; row < (int)height; row++) {
row_pointers[row] = (png_bytep)
(Uint8 *)surface->pixels + row*surface->pitch;
}
/* Read the entire image in one go */
lib.png_read_image(png_ptr, row_pointers);
/* and we're done! (png_read_end() can be omitted if no processing of
* post-IDAT text/time/etc. is desired)
* In some cases it can't read PNG's created by some popular programs (ACDSEE),
* we do not want to process comments, so we omit png_read_end
lib.png_read_end(png_ptr, info_ptr);
*/
/* Load the palette, if any */
palette = surface->format->palette;
if ( palette ) {
int png_num_palette;
png_colorp png_palette;
lib.png_get_PLTE(png_ptr, info_ptr, &png_palette, &png_num_palette);
if (color_type == PNG_COLOR_TYPE_GRAY) {
palette->ncolors = 256;
for (i = 0; i < 256; i++) {
palette->colors[i].r = i;
palette->colors[i].g = i;
palette->colors[i].b = i;
}
} else if (png_num_palette > 0 ) {
palette->ncolors = png_num_palette;
for ( i=0; i<png_num_palette; ++i ) {
palette->colors[i].b = png_palette[i].blue;
palette->colors[i].g = png_palette[i].green;
palette->colors[i].r = png_palette[i].red;
}
}
}
done: /* Clean up and return */
if ( png_ptr ) {
lib.png_destroy_read_struct(&png_ptr,
info_ptr ? &info_ptr : (png_infopp)0,
(png_infopp)0);
}
if ( row_pointers ) {
SDL_free(row_pointers);
}
if ( error ) {
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
IMG_SetError(error);
}
return(surface);
}
#else
int IMG_InitPNG()
{
IMG_SetError("PNG images are not supported");
return(-1);
}
void IMG_QuitPNG()
{
}
/* See if an image is contained in a data source */
int IMG_isPNG(SDL_RWops *src)
{
return(0);
}
/* Load a PNG type image from an SDL datasource */
SDL_Surface *IMG_LoadPNG_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_PNG */
#endif /* !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND) */
/* We'll always have PNG save support */
#define SAVE_PNG
#ifdef SAVE_PNG
#include "miniz.h"
int IMG_SavePNG(SDL_Surface *surface, const char *file)
{
SDL_RWops *dst = SDL_RWFromFile(file, "wb");
if (dst) {
return IMG_SavePNG_RW(surface, dst, 1);
} else {
return -1;
}
}
int IMG_SavePNG_RW(SDL_Surface *surface, SDL_RWops *dst, int freedst)
{
int result = -1;
if (dst) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
static const Uint32 png_format = SDL_PIXELFORMAT_ABGR8888;
#else
static const Uint32 png_format = SDL_PIXELFORMAT_RGBA8888;
#endif
size_t size;
void *png;
if (surface->format->format == png_format) {
png = tdefl_write_image_to_png_file_in_memory(surface->pixels, surface->w, surface->h, surface->pitch, surface->format->BytesPerPixel, &size);
} else {
SDL_Surface *cvt = SDL_ConvertSurfaceFormat(surface, png_format, 0);
if (cvt) {
png = tdefl_write_image_to_png_file_in_memory(cvt->pixels, cvt->w, cvt->h, cvt->pitch, cvt->format->BytesPerPixel, &size);
SDL_FreeSurface(cvt);
}
}
if (png) {
if (SDL_RWwrite(dst, png, size, 1)) {
result = 0;
}
SDL_free(png);
} else {
SDL_SetError("Failed to convert and save image");
}
if (freedst) {
SDL_RWclose(dst);
}
} else {
SDL_SetError("Passed NULL dst");
}
return result;
}
#endif /* SAVE_PNG */
libs/SDL2_image-2.0.0/IMG_pnm.c
-258
View File
@@ -1,258 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/*
* PNM (portable anymap) image loader:
*
* Supports: PBM, PGM and PPM, ASCII and binary formats
* (PBM and PGM are loaded as 8bpp surfaces)
* Does not support: maximum component value > 255
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include "SDL_image.h"
#ifdef LOAD_PNM
/* See if an image is contained in a data source */
int IMG_isPNM(SDL_RWops *src)
{
Sint64 start;
int is_PNM;
char magic[2];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_PNM = 0;
if ( SDL_RWread(src, magic, sizeof(magic), 1) ) {
/*
* PNM magic signatures:
* P1 PBM, ascii format
* P2 PGM, ascii format
* P3 PPM, ascii format
* P4 PBM, binary format
* P5 PGM, binary format
* P6 PPM, binary format
* P7 PAM, a general wrapper for PNM data
*/
if ( magic[0] == 'P' && magic[1] >= '1' && magic[1] <= '6' ) {
is_PNM = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_PNM);
}
/* read a non-negative integer from the source. return -1 upon error */
static int ReadNumber(SDL_RWops *src)
{
int number;
unsigned char ch;
/* Initialize return value */
number = 0;
/* Skip leading whitespace */
do {
if ( ! SDL_RWread(src, &ch, 1, 1) ) {
return(0);
}
/* Eat comments as whitespace */
if ( ch == '#' ) { /* Comment is '#' to end of line */
do {
if ( ! SDL_RWread(src, &ch, 1, 1) ) {
return -1;
}
} while ( (ch != '\r') && (ch != '\n') );
}
} while ( isspace(ch) );
/* Add up the number */
do {
number *= 10;
number += ch-'0';
if ( !SDL_RWread(src, &ch, 1, 1) ) {
return -1;
}
} while ( isdigit(ch) );
return(number);
}
SDL_Surface *IMG_LoadPNM_RW(SDL_RWops *src)
{
Sint64 start;
SDL_Surface *surface = NULL;
int width, height;
int maxval, y, bpl;
Uint8 *row;
Uint8 *buf = NULL;
char *error = NULL;
Uint8 magic[2];
int ascii;
enum { PBM, PGM, PPM, PAM } kind;
#define ERROR(s) do { error = (s); goto done; } while(0)
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
SDL_RWread(src, magic, 2, 1);
kind = magic[1] - '1';
ascii = 1;
if(kind >= 3) {
ascii = 0;
kind -= 3;
}
width = ReadNumber(src);
height = ReadNumber(src);
if(width <= 0 || height <= 0)
ERROR("Unable to read image width and height");
if(kind != PBM) {
maxval = ReadNumber(src);
if(maxval <= 0 || maxval > 255)
ERROR("unsupported PNM format");
} else
maxval = 255; /* never scale PBMs */
/* binary PNM allows just a single character of whitespace after
the last parameter, and we've already consumed it */
if(kind == PPM) {
/* 24-bit surface in R,G,B byte order */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, 24,
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
0x000000ff, 0x0000ff00, 0x00ff0000,
#else
0x00ff0000, 0x0000ff00, 0x000000ff,
#endif
0);
} else {
/* load PBM/PGM as 8-bit indexed images */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, 8,
0, 0, 0, 0);
}
if ( surface == NULL )
ERROR("Out of memory");
bpl = width * surface->format->BytesPerPixel;
if(kind == PGM) {
SDL_Color *c = surface->format->palette->colors;
int i;
for(i = 0; i < 256; i++)
c[i].r = c[i].g = c[i].b = i;
surface->format->palette->ncolors = 256;
} else if(kind == PBM) {
/* for some reason PBM has 1=black, 0=white */
SDL_Color *c = surface->format->palette->colors;
c[0].r = c[0].g = c[0].b = 255;
c[1].r = c[1].g = c[1].b = 0;
surface->format->palette->ncolors = 2;
bpl = (width + 7) >> 3;
buf = (Uint8 *)SDL_malloc(bpl);
if(buf == NULL)
ERROR("Out of memory");
}
/* Read the image into the surface */
row = (Uint8 *)surface->pixels;
for(y = 0; y < height; y++) {
if(ascii) {
int i;
if(kind == PBM) {
for(i = 0; i < width; i++) {
Uint8 ch;
do {
if(!SDL_RWread(src, &ch,
1, 1))
ERROR("file truncated");
ch -= '0';
} while(ch > 1);
row[i] = ch;
}
} else {
for(i = 0; i < bpl; i++) {
int c;
c = ReadNumber(src);
if(c < 0)
ERROR("file truncated");
row[i] = c;
}
}
} else {
Uint8 *dst = (kind == PBM) ? buf : row;
if(!SDL_RWread(src, dst, bpl, 1))
ERROR("file truncated");
if(kind == PBM) {
/* expand bitmap to 8bpp */
int i;
for(i = 0; i < width; i++) {
int bit = 7 - (i & 7);
row[i] = (buf[i >> 3] >> bit) & 1;
}
}
}
if(maxval < 255) {
/* scale up to full dynamic range (slow) */
int i;
for(i = 0; i < bpl; i++)
row[i] = row[i] * 255 / maxval;
}
row += surface->pitch;
}
done:
SDL_free(buf);
if(error) {
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
IMG_SetError(error);
}
return(surface);
}
#else
/* See if an image is contained in a data source */
int IMG_isPNM(SDL_RWops *src)
{
return(0);
}
/* Load a PNM type image from an SDL datasource */
SDL_Surface *IMG_LoadPNM_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_PNM */
libs/SDL2_image-2.0.0/IMG_tga.c
-340
View File
@@ -1,340 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#if !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)
/* This is a Targa image file loading framework */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "SDL_endian.h"
#include "SDL_image.h"
#ifdef LOAD_TGA
/*
* A TGA loader for the SDL library
* Supports: Reading 8, 15, 16, 24 and 32bpp images, with alpha or colourkey,
* uncompressed or RLE encoded.
*
* 2000-06-10 Mattias Engdegård <f91-men@nada.kth.se>: initial version
* 2000-06-26 Mattias Engdegård <f91-men@nada.kth.se>: read greyscale TGAs
* 2000-08-09 Mattias Engdegård <f91-men@nada.kth.se>: alpha inversion removed
*/
struct TGAheader {
Uint8 infolen; /* length of info field */
Uint8 has_cmap; /* 1 if image has colormap, 0 otherwise */
Uint8 type;
Uint8 cmap_start[2]; /* index of first colormap entry */
Uint8 cmap_len[2]; /* number of entries in colormap */
Uint8 cmap_bits; /* bits per colormap entry */
Uint8 yorigin[2]; /* image origin (ignored here) */
Uint8 xorigin[2];
Uint8 width[2]; /* image size */
Uint8 height[2];
Uint8 pixel_bits; /* bits/pixel */
Uint8 flags;
};
enum tga_type {
TGA_TYPE_INDEXED = 1,
TGA_TYPE_RGB = 2,
TGA_TYPE_BW = 3,
TGA_TYPE_RLE_INDEXED = 9,
TGA_TYPE_RLE_RGB = 10,
TGA_TYPE_RLE_BW = 11
};
#define TGA_INTERLEAVE_MASK 0xc0
#define TGA_INTERLEAVE_NONE 0x00
#define TGA_INTERLEAVE_2WAY 0x40
#define TGA_INTERLEAVE_4WAY 0x80
#define TGA_ORIGIN_MASK 0x30
#define TGA_ORIGIN_LEFT 0x00
#define TGA_ORIGIN_RIGHT 0x10
#define TGA_ORIGIN_LOWER 0x00
#define TGA_ORIGIN_UPPER 0x20
/* read/write unaligned little-endian 16-bit ints */
#define LE16(p) ((p)[0] + ((p)[1] << 8))
#define SETLE16(p, v) ((p)[0] = (v), (p)[1] = (v) >> 8)
/* Load a TGA type image from an SDL datasource */
SDL_Surface *IMG_LoadTGA_RW(SDL_RWops *src)
{
Sint64 start;
const char *error = NULL;
struct TGAheader hdr;
int rle = 0;
int alpha = 0;
int indexed = 0;
int grey = 0;
int ckey = -1;
int ncols, w, h;
SDL_Surface *img = NULL;
Uint32 rmask, gmask, bmask, amask;
Uint8 *dst;
int i;
int bpp;
int lstep;
Uint32 pixel;
int count, rep;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if(!SDL_RWread(src, &hdr, sizeof(hdr), 1)) {
error = "Error reading TGA data";
goto error;
}
ncols = LE16(hdr.cmap_len);
switch(hdr.type) {
case TGA_TYPE_RLE_INDEXED:
rle = 1;
/* fallthrough */
case TGA_TYPE_INDEXED:
if(!hdr.has_cmap || hdr.pixel_bits != 8 || ncols > 256)
goto unsupported;
indexed = 1;
break;
case TGA_TYPE_RLE_RGB:
rle = 1;
/* fallthrough */
case TGA_TYPE_RGB:
indexed = 0;
break;
case TGA_TYPE_RLE_BW:
rle = 1;
/* fallthrough */
case TGA_TYPE_BW:
if(hdr.pixel_bits != 8)
goto unsupported;
/* Treat greyscale as 8bpp indexed images */
indexed = grey = 1;
break;
default:
goto unsupported;
}
bpp = (hdr.pixel_bits + 7) >> 3;
rmask = gmask = bmask = amask = 0;
switch(hdr.pixel_bits) {
case 8:
if(!indexed) {
goto unsupported;
}
break;
case 15:
case 16:
/* 15 and 16bpp both seem to use 5 bits/plane. The extra alpha bit
is ignored for now. */
rmask = 0x7c00;
gmask = 0x03e0;
bmask = 0x001f;
break;
case 32:
alpha = 1;
/* fallthrough */
case 24:
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
{
int s = alpha ? 0 : 8;
amask = 0x000000ff >> s;
rmask = 0x0000ff00 >> s;
gmask = 0x00ff0000 >> s;
bmask = 0xff000000 >> s;
}
#else
amask = alpha ? 0xff000000 : 0;
rmask = 0x00ff0000;
gmask = 0x0000ff00;
bmask = 0x000000ff;
#endif
break;
default:
goto unsupported;
}
if((hdr.flags & TGA_INTERLEAVE_MASK) != TGA_INTERLEAVE_NONE
|| hdr.flags & TGA_ORIGIN_RIGHT) {
goto unsupported;
}
SDL_RWseek(src, hdr.infolen, RW_SEEK_CUR); /* skip info field */
w = LE16(hdr.width);
h = LE16(hdr.height);
img = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h,
bpp * 8,
rmask, gmask, bmask, amask);
if(img == NULL) {
error = "Out of memory";
goto error;
}
if(hdr.has_cmap) {
int palsiz = ncols * ((hdr.cmap_bits + 7) >> 3);
if(indexed && !grey) {
Uint8 *pal = (Uint8 *)SDL_malloc(palsiz), *p = pal;
SDL_Color *colors = img->format->palette->colors;
img->format->palette->ncolors = ncols;
SDL_RWread(src, pal, palsiz, 1);
for(i = 0; i < ncols; i++) {
switch(hdr.cmap_bits) {
case 15:
case 16:
{
Uint16 c = p[0] + (p[1] << 8);
p += 2;
colors[i].r = (c >> 7) & 0xf8;
colors[i].g = (c >> 2) & 0xf8;
colors[i].b = c << 3;
}
break;
case 24:
case 32:
colors[i].b = *p++;
colors[i].g = *p++;
colors[i].r = *p++;
if(hdr.cmap_bits == 32 && *p++ < 128)
ckey = i;
break;
}
}
SDL_free(pal);
if(ckey >= 0)
SDL_SetColorKey(img, SDL_TRUE, ckey);
} else {
/* skip unneeded colormap */
SDL_RWseek(src, palsiz, RW_SEEK_CUR);
}
}
if(grey) {
SDL_Color *colors = img->format->palette->colors;
for(i = 0; i < 256; i++)
colors[i].r = colors[i].g = colors[i].b = i;
img->format->palette->ncolors = 256;
}
if(hdr.flags & TGA_ORIGIN_UPPER) {
lstep = img->pitch;
dst = (Uint8 *)img->pixels;
} else {
lstep = -img->pitch;
dst = (Uint8 *)img->pixels + (h - 1) * img->pitch;
}
/* The RLE decoding code is slightly convoluted since we can't rely on
spans not to wrap across scan lines */
count = rep = 0;
for(i = 0; i < h; i++) {
if(rle) {
int x = 0;
for(;;) {
Uint8 c;
if(count) {
int n = count;
if(n > w - x)
n = w - x;
SDL_RWread(src, dst + x * bpp, n * bpp, 1);
count -= n;
x += n;
if(x == w)
break;
} else if(rep) {
int n = rep;
if(n > w - x)
n = w - x;
rep -= n;
while(n--) {
SDL_memcpy(dst + x * bpp, &pixel, bpp);
x++;
}
if(x == w)
break;
}
SDL_RWread(src, &c, 1, 1);
if(c & 0x80) {
SDL_RWread(src, &pixel, bpp, 1);
rep = (c & 0x7f) + 1;
} else {
count = c + 1;
}
}
} else {
SDL_RWread(src, dst, w * bpp, 1);
}
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
if (bpp == 2) {
/* swap byte order */
int x;
Uint16 *p = (Uint16 *)dst;
for(x = 0; x < w; x++)
p[x] = SDL_Swap16(p[x]);
}
#endif
dst += lstep;
}
return img;
unsupported:
error = "Unsupported TGA format";
error:
SDL_RWseek(src, start, RW_SEEK_SET);
if ( img ) {
SDL_FreeSurface(img);
}
IMG_SetError(error);
return NULL;
}
#else
/* dummy TGA load routine */
SDL_Surface *IMG_LoadTGA_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_TGA */
#endif /* !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND) */
libs/SDL2_image-2.0.0/IMG_tif.c
-298
View File
@@ -1,298 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#if !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)
/* This is a TIFF image file loading framework */
#include <stdio.h>
#include "SDL_image.h"
#ifdef LOAD_TIF
#include <tiffio.h>
static struct {
int loaded;
void *handle;
TIFF* (*TIFFClientOpen)(const char*, const char*, thandle_t, TIFFReadWriteProc, TIFFReadWriteProc, TIFFSeekProc, TIFFCloseProc, TIFFSizeProc, TIFFMapFileProc, TIFFUnmapFileProc);
void (*TIFFClose)(TIFF*);
int (*TIFFGetField)(TIFF*, ttag_t, ...);
int (*TIFFReadRGBAImage)(TIFF*, uint32, uint32, uint32*, int);
TIFFErrorHandler (*TIFFSetErrorHandler)(TIFFErrorHandler);
} lib;
#ifdef LOAD_TIF_DYNAMIC
int IMG_InitTIF()
{
if ( lib.loaded == 0 ) {
lib.handle = SDL_LoadObject(LOAD_TIF_DYNAMIC);
if ( lib.handle == NULL ) {
return -1;
}
lib.TIFFClientOpen =
(TIFF* (*)(const char*, const char*, thandle_t, TIFFReadWriteProc, TIFFReadWriteProc, TIFFSeekProc, TIFFCloseProc, TIFFSizeProc, TIFFMapFileProc, TIFFUnmapFileProc))
SDL_LoadFunction(lib.handle, "TIFFClientOpen");
if ( lib.TIFFClientOpen == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.TIFFClose =
(void (*)(TIFF*))
SDL_LoadFunction(lib.handle, "TIFFClose");
if ( lib.TIFFClose == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.TIFFGetField =
(int (*)(TIFF*, ttag_t, ...))
SDL_LoadFunction(lib.handle, "TIFFGetField");
if ( lib.TIFFGetField == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.TIFFReadRGBAImage =
(int (*)(TIFF*, uint32, uint32, uint32*, int))
SDL_LoadFunction(lib.handle, "TIFFReadRGBAImage");
if ( lib.TIFFReadRGBAImage == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.TIFFSetErrorHandler =
(TIFFErrorHandler (*)(TIFFErrorHandler))
SDL_LoadFunction(lib.handle, "TIFFSetErrorHandler");
if ( lib.TIFFSetErrorHandler == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
}
++lib.loaded;
return 0;
}
void IMG_QuitTIF()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
SDL_UnloadObject(lib.handle);
}
--lib.loaded;
}
#else
int IMG_InitTIF()
{
if ( lib.loaded == 0 ) {
lib.TIFFClientOpen = TIFFClientOpen;
lib.TIFFClose = TIFFClose;
lib.TIFFGetField = TIFFGetField;
lib.TIFFReadRGBAImage = TIFFReadRGBAImage;
lib.TIFFSetErrorHandler = TIFFSetErrorHandler;
}
++lib.loaded;
return 0;
}
void IMG_QuitTIF()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
}
--lib.loaded;
}
#endif /* LOAD_TIF_DYNAMIC */
/*
* These are the thunking routine to use the SDL_RWops* routines from
* libtiff's internals.
*/
static tsize_t tiff_read(thandle_t fd, tdata_t buf, tsize_t size)
{
return SDL_RWread((SDL_RWops*)fd, buf, 1, size);
}
static toff_t tiff_seek(thandle_t fd, toff_t offset, int origin)
{
return SDL_RWseek((SDL_RWops*)fd, offset, origin);
}
static tsize_t tiff_write(thandle_t fd, tdata_t buf, tsize_t size)
{
return SDL_RWwrite((SDL_RWops*)fd, buf, 1, size);
}
static int tiff_close(thandle_t fd)
{
/*
* We don't want libtiff closing our SDL_RWops*, but if it's not given
* a routine to try, and if the image isn't a TIFF, it'll segfault.
*/
return 0;
}
static int tiff_map(thandle_t fd, tdata_t* pbase, toff_t* psize)
{
return (0);
}
static void tiff_unmap(thandle_t fd, tdata_t base, toff_t size)
{
return;
}
static toff_t tiff_size(thandle_t fd)
{
Sint64 save_pos;
toff_t size;
save_pos = SDL_RWtell((SDL_RWops*)fd);
SDL_RWseek((SDL_RWops*)fd, 0, RW_SEEK_END);
size = SDL_RWtell((SDL_RWops*)fd);
SDL_RWseek((SDL_RWops*)fd, save_pos, RW_SEEK_SET);
return size;
}
int IMG_isTIF(SDL_RWops* src)
{
Sint64 start;
int is_TIF;
Uint8 magic[4];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_TIF = 0;
if ( SDL_RWread(src, magic, 1, sizeof(magic)) == sizeof(magic) ) {
if ( (magic[0] == 'I' &&
magic[1] == 'I' &&
magic[2] == 0x2a &&
magic[3] == 0x00) ||
(magic[0] == 'M' &&
magic[1] == 'M' &&
magic[2] == 0x00 &&
magic[3] == 0x2a) ) {
is_TIF = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_TIF);
}
SDL_Surface* IMG_LoadTIF_RW(SDL_RWops* src)
{
Sint64 start;
TIFF* tiff;
SDL_Surface* surface = NULL;
Uint32 img_width, img_height;
Uint32 Rmask, Gmask, Bmask, Amask;
Uint32 x, y;
Uint32 half;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( !IMG_Init(IMG_INIT_TIF) ) {
return NULL;
}
/* turn off memory mapped access with the m flag */
tiff = lib.TIFFClientOpen("SDL_image", "rm", (thandle_t)src,
tiff_read, tiff_write, tiff_seek, tiff_close, tiff_size, tiff_map, tiff_unmap);
if(!tiff)
goto error;
/* Retrieve the dimensions of the image from the TIFF tags */
lib.TIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &img_width);
lib.TIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &img_height);
Rmask = 0x000000FF;
Gmask = 0x0000FF00;
Bmask = 0x00FF0000;
Amask = 0xFF000000;
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, img_width, img_height, 32,
Rmask, Gmask, Bmask, Amask);
if(!surface)
goto error;
if(!lib.TIFFReadRGBAImage(tiff, img_width, img_height, (uint32 *)surface->pixels, 0))
goto error;
/* libtiff loads the image upside-down, flip it back */
half = img_height / 2;
for(y = 0; y < half; y++)
{
Uint32 *top = (Uint32 *)surface->pixels + y * surface->pitch/4;
Uint32 *bot = (Uint32 *)surface->pixels
+ (img_height - y - 1) * surface->pitch/4;
for(x = 0; x < img_width; x++)
{
Uint32 tmp = top[x];
top[x] = bot[x];
bot[x] = tmp;
}
}
lib.TIFFClose(tiff);
return surface;
error:
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
}
return NULL;
}
#else
int IMG_InitTIF()
{
IMG_SetError("TIFF images are not supported");
return(-1);
}
void IMG_QuitTIF()
{
}
/* See if an image is contained in a data source */
int IMG_isTIF(SDL_RWops *src)
{
return(0);
}
/* Load a TIFF type image from an SDL datasource */
SDL_Surface *IMG_LoadTIF_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_TIF */
#endif /* !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND) */
libs/SDL2_image-2.0.0/IMG_webp.c
-317
View File
@@ -1,317 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is a WEBP image file loading framework */
#include <stdlib.h>
#include <stdio.h>
#include "SDL_image.h"
#ifdef LOAD_WEBP
/*=============================================================================
File: SDL_webp.c
Purpose: A WEBP loader for the SDL library
Revision:
Created by: Michael Bonfils (Murlock) (26 November 2011)
murlock42@gmail.com
=============================================================================*/
#include "SDL_endian.h"
#ifdef macintosh
#define MACOS
#endif
#include <webp/decode.h>
static struct {
int loaded;
void *handle;
VP8StatusCode (*webp_get_features_internal) (const uint8_t *data, size_t data_size, WebPBitstreamFeatures* features, int decoder_abi_version);
uint8_t* (*webp_decode_rgb_into) (const uint8_t* data, size_t data_size, uint8_t* output_buffer, size_t output_buffer_size, int output_stride);
uint8_t* (*webp_decode_rgba_into) (const uint8_t* data, size_t data_size, uint8_t* output_buffer, size_t output_buffer_size, int output_stride);
} lib;
#ifdef LOAD_WEBP_DYNAMIC
int IMG_InitWEBP()
{
if ( lib.loaded == 0 ) {
lib.handle = SDL_LoadObject(LOAD_WEBP_DYNAMIC);
if ( lib.handle == NULL ) {
return -1;
}
lib.webp_get_features_internal =
( VP8StatusCode (*) (const uint8_t *, size_t, WebPBitstreamFeatures*, int) )
SDL_LoadFunction(lib.handle, "WebPGetFeaturesInternal" );
if ( lib.webp_get_features_internal == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.webp_decode_rgb_into =
( uint8_t* (*) (const uint8_t*, size_t, uint8_t*, size_t, int ) )
SDL_LoadFunction(lib.handle, "WebPDecodeRGBInto" );
if ( lib.webp_decode_rgb_into == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.webp_decode_rgba_into =
( uint8_t* (*) (const uint8_t*, size_t, uint8_t*, size_t, int ) )
SDL_LoadFunction(lib.handle, "WebPDecodeRGBAInto" );
if ( lib.webp_decode_rgba_into == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
}
++lib.loaded;
return 0;
}
void IMG_QuitWEBP()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
SDL_UnloadObject(lib.handle);
}
--lib.loaded;
}
#else
int IMG_InitWEBP()
{
if ( lib.loaded == 0 ) {
#ifdef __MACOSX__
extern VP8StatusCode WebPGetFeaturesInternal(const uint8_t*, size_t, WebPBitstreamFeatures*, int) __attribute__((weak_import));
if ( WebPGetFeaturesInternal == NULL )
{
/* Missing weakly linked framework */
IMG_SetError("Missing webp.framework");
return -1;
}
#endif // __MACOSX__
lib.webp_get_features_internal = WebPGetFeaturesInternal;
lib.webp_decode_rgb_into = WebPDecodeRGBInto;
lib.webp_decode_rgba_into = WebPDecodeRGBAInto;
}
++lib.loaded;
return 0;
}
void IMG_QuitWEBP()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
}
--lib.loaded;
}
#endif /* LOAD_WEBP_DYNAMIC */
static int webp_getinfo( SDL_RWops *src, int *datasize ) {
Sint64 start;
int is_WEBP;
Uint8 magic[20];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_WEBP = 0;
if ( SDL_RWread(src, magic, 1, sizeof(magic)) == sizeof(magic) ) {
if ( magic[ 0] == 'R' &&
magic[ 1] == 'I' &&
magic[ 2] == 'F' &&
magic[ 3] == 'F' &&
magic[ 8] == 'W' &&
magic[ 9] == 'E' &&
magic[10] == 'B' &&
magic[11] == 'P' &&
magic[12] == 'V' &&
magic[13] == 'P' &&
magic[14] == '8' &&
#if WEBP_DECODER_ABI_VERSION < 0x0003 /* old versions don't support WEBPVP8X and WEBPVP8L */
magic[15] == ' ') {
#else
(magic[15] == ' ' || magic[15] == 'X' || magic[15] == 'L')) {
#endif
is_WEBP = 1;
if ( datasize ) {
*datasize = (int)SDL_RWseek(src, 0, SEEK_END);
}
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_WEBP);
}
/* See if an image is contained in a data source */
int IMG_isWEBP(SDL_RWops *src)
{
return webp_getinfo( src, NULL );
}
SDL_Surface *IMG_LoadWEBP_RW(SDL_RWops *src)
{
Sint64 start;
const char *error = NULL;
SDL_Surface *volatile surface = NULL;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
Uint32 Amask;
WebPBitstreamFeatures features;
int raw_data_size;
uint8_t *raw_data = NULL;
int r;
uint8_t *ret;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( !IMG_Init(IMG_INIT_WEBP) ) {
goto error;
}
raw_data_size = -1;
if ( !webp_getinfo( src, &raw_data_size ) ) {
error = "Invalid WEBP";
goto error;
}
// seek to start of file
SDL_RWseek(src, 0, RW_SEEK_SET );
raw_data = (uint8_t*) SDL_malloc( raw_data_size );
if ( raw_data == NULL ) {
error = "Failed to allocate enought buffer for WEBP";
goto error;
}
r = SDL_RWread(src, raw_data, 1, raw_data_size );
if ( r != raw_data_size ) {
error = "Failed to read WEBP";
goto error;
}
#if 0
// extract size of picture, not interesting since we don't know about alpha channel
int width = -1, height = -1;
if ( !WebPGetInfo( raw_data, raw_data_size, &width, &height ) ) {
printf("WebPGetInfo has failed\n" );
return NULL;
}
#endif
if ( lib.webp_get_features_internal( raw_data, raw_data_size, &features, WEBP_DECODER_ABI_VERSION ) != VP8_STATUS_OK ) {
error = "WebPGetFeatures has failed";
goto error;
}
/* Check if it's ok !*/
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
Rmask = 0x000000FF;
Gmask = 0x0000FF00;
Bmask = 0x00FF0000;
Amask = (features.has_alpha) ? 0xFF000000 : 0;
#else
s = (features.has_alpha) ? 0 : 8;
Rmask = 0xFF000000 >> s;
Gmask = 0x00FF0000 >> s;
Bmask = 0x0000FF00 >> s;
Amask = 0x000000FF >> s;
#endif
surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
features.width, features.height,
features.has_alpha?32:24, Rmask,Gmask,Bmask,Amask);
if ( surface == NULL ) {
error = "Failed to allocate SDL_Surface";
goto error;
}
if ( features.has_alpha ) {
ret = lib.webp_decode_rgba_into( raw_data, raw_data_size, (uint8_t *)surface->pixels, surface->pitch * surface->h, surface->pitch );
} else {
ret = lib.webp_decode_rgb_into( raw_data, raw_data_size, (uint8_t *)surface->pixels, surface->pitch * surface->h, surface->pitch );
}
if ( !ret ) {
error = "Failed to decode WEBP";
goto error;
}
return surface;
error:
if ( surface ) {
SDL_FreeSurface( surface );
}
if ( raw_data ) {
SDL_free( raw_data );
}
if ( error ) {
IMG_SetError( error );
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(NULL);
}
#else
int IMG_InitWEBP()
{
IMG_SetError("WEBP images are not supported");
return(-1);
}
void IMG_QuitWEBP()
{
}
/* See if an image is contained in a data source */
int IMG_isWEBP(SDL_RWops *src)
{
return(0);
}
/* Load a WEBP type image from an SDL datasource */
SDL_Surface *IMG_LoadWEBP_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_WEBP */
libs/SDL2_image-2.0.0/IMG_xcf.c
-841
View File
@@ -1,841 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is a XCF image file loading framework */
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include "SDL_endian.h"
#include "SDL_image.h"
#ifdef LOAD_XCF
#if DEBUG
static char prop_names [][30] = {
"end",
"colormap",
"active_layer",
"active_channel",
"selection",
"floating_selection",
"opacity",
"mode",
"visible",
"linked",
"preserve_transparency",
"apply_mask",
"edit_mask",
"show_mask",
"show_masked",
"offsets",
"color",
"compression",
"guides",
"resolution",
"tattoo",
"parasites",
"unit",
"paths",
"user_unit"
};
#endif
typedef enum
{
PROP_END = 0,
PROP_COLORMAP = 1,
PROP_ACTIVE_LAYER = 2,
PROP_ACTIVE_CHANNEL = 3,
PROP_SELECTION = 4,
PROP_FLOATING_SELECTION = 5,
PROP_OPACITY = 6,
PROP_MODE = 7,
PROP_VISIBLE = 8,
PROP_LINKED = 9,
PROP_PRESERVE_TRANSPARENCY = 10,
PROP_APPLY_MASK = 11,
PROP_EDIT_MASK = 12,
PROP_SHOW_MASK = 13,
PROP_SHOW_MASKED = 14,
PROP_OFFSETS = 15,
PROP_COLOR = 16,
PROP_COMPRESSION = 17,
PROP_GUIDES = 18,
PROP_RESOLUTION = 19,
PROP_TATTOO = 20,
PROP_PARASITES = 21,
PROP_UNIT = 22,
PROP_PATHS = 23,
PROP_USER_UNIT = 24
} xcf_prop_type;
typedef enum {
COMPR_NONE = 0,
COMPR_RLE = 1,
COMPR_ZLIB = 2,
COMPR_FRACTAL = 3
} xcf_compr_type;
typedef enum {
IMAGE_RGB = 0,
IMAGE_GREYSCALE = 1,
IMAGE_INDEXED = 2
} xcf_image_type;
typedef struct {
Uint32 id;
Uint32 length;
union {
struct {
Uint32 num;
char * cmap;
} colormap; // 1
struct {
Uint32 drawable_offset;
} floating_selection; // 5
Sint32 opacity;
Sint32 mode;
int visible;
int linked;
int preserve_transparency;
int apply_mask;
int show_mask;
struct {
Sint32 x;
Sint32 y;
} offset;
unsigned char color [3];
Uint8 compression;
struct {
Sint32 x;
Sint32 y;
} resolution;
struct {
char * name;
Uint32 flags;
Uint32 size;
char * data;
} parasite;
} data;
} xcf_prop;
typedef struct {
char sign [14];
Uint32 width;
Uint32 height;
Sint32 image_type;
xcf_prop * properties;
Uint32 * layer_file_offsets;
Uint32 * channel_file_offsets;
xcf_compr_type compr;
Uint32 cm_num;
unsigned char * cm_map;
} xcf_header;
typedef struct {
Uint32 width;
Uint32 height;
Sint32 layer_type;
char * name;
xcf_prop * properties;
Uint32 hierarchy_file_offset;
Uint32 layer_mask_offset;
Uint32 offset_x;
Uint32 offset_y;
int visible;
} xcf_layer;
typedef struct {
Uint32 width;
Uint32 height;
char * name;
xcf_prop * properties;
Uint32 hierarchy_file_offset;
Uint32 color;
Uint32 opacity;
int selection;
int visible;
} xcf_channel;
typedef struct {
Uint32 width;
Uint32 height;
Uint32 bpp;
Uint32 * level_file_offsets;
} xcf_hierarchy;
typedef struct {
Uint32 width;
Uint32 height;
Uint32 * tile_file_offsets;
} xcf_level;
typedef unsigned char * xcf_tile;
typedef unsigned char * (* load_tile_type) (SDL_RWops *, Uint32, int, int, int);
/* See if an image is contained in a data source */
int IMG_isXCF(SDL_RWops *src)
{
Sint64 start;
int is_XCF;
char magic[14];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_XCF = 0;
if ( SDL_RWread(src, magic, sizeof(magic), 1) ) {
if (SDL_strncmp(magic, "gimp xcf ", 9) == 0) {
is_XCF = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_XCF);
}
static char * read_string (SDL_RWops * src) {
Uint32 tmp;
char * data;
tmp = SDL_ReadBE32 (src);
if (tmp > 0) {
data = (char *) SDL_malloc (sizeof (char) * tmp);
SDL_RWread (src, data, tmp, 1);
}
else {
data = NULL;
}
return data;
}
static Uint32 Swap32 (Uint32 v) {
return
((v & 0x000000FF) << 16)
| ((v & 0x0000FF00))
| ((v & 0x00FF0000) >> 16)
| ((v & 0xFF000000));
}
static void xcf_read_property (SDL_RWops * src, xcf_prop * prop) {
prop->id = SDL_ReadBE32 (src);
prop->length = SDL_ReadBE32 (src);
#if DEBUG
printf ("%.8X: %s: %d\n", SDL_RWtell (src), prop->id < 25 ? prop_names [prop->id] : "unknown", prop->length);
#endif
switch (prop->id) {
case PROP_COLORMAP:
prop->data.colormap.num = SDL_ReadBE32 (src);
prop->data.colormap.cmap = (char *) SDL_malloc (sizeof (char) * prop->data.colormap.num * 3);
SDL_RWread (src, prop->data.colormap.cmap, prop->data.colormap.num*3, 1);
break;
case PROP_OFFSETS:
prop->data.offset.x = SDL_ReadBE32 (src);
prop->data.offset.y = SDL_ReadBE32 (src);
break;
case PROP_OPACITY:
prop->data.opacity = SDL_ReadBE32 (src);
break;
case PROP_COMPRESSION:
case PROP_COLOR:
SDL_RWread (src, &prop->data, prop->length, 1);
break;
case PROP_VISIBLE:
prop->data.visible = SDL_ReadBE32 (src);
break;
default:
// SDL_RWread (src, &prop->data, prop->length, 1);
SDL_RWseek (src, prop->length, RW_SEEK_CUR);
}
}
static void free_xcf_header (xcf_header * h) {
if (h->cm_num)
SDL_free (h->cm_map);
if (h->layer_file_offsets)
SDL_free (h->layer_file_offsets);
SDL_free (h);
}
static xcf_header * read_xcf_header (SDL_RWops * src) {
xcf_header * h;
xcf_prop prop;
h = (xcf_header *) SDL_malloc (sizeof (xcf_header));
SDL_RWread (src, h->sign, 14, 1);
h->width = SDL_ReadBE32 (src);
h->height = SDL_ReadBE32 (src);
h->image_type = SDL_ReadBE32 (src);
h->properties = NULL;
h->layer_file_offsets = NULL;
h->compr = COMPR_NONE;
h->cm_num = 0;
h->cm_map = NULL;
// Just read, don't save
do {
xcf_read_property (src, &prop);
if (prop.id == PROP_COMPRESSION)
h->compr = (xcf_compr_type)prop.data.compression;
else if (prop.id == PROP_COLORMAP) {
// unused var: int i;
h->cm_num = prop.data.colormap.num;
h->cm_map = (unsigned char *) SDL_malloc (sizeof (unsigned char) * 3 * h->cm_num);
SDL_memcpy (h->cm_map, prop.data.colormap.cmap, 3*sizeof (char)*h->cm_num);
SDL_free (prop.data.colormap.cmap);
}
} while (prop.id != PROP_END);
return h;
}
static void free_xcf_layer (xcf_layer * l) {
SDL_free (l->name);
SDL_free (l);
}
static xcf_layer * read_xcf_layer (SDL_RWops * src) {
xcf_layer * l;
xcf_prop prop;
l = (xcf_layer *) SDL_malloc (sizeof (xcf_layer));
l->width = SDL_ReadBE32 (src);
l->height = SDL_ReadBE32 (src);
l->layer_type = SDL_ReadBE32 (src);
l->name = read_string (src);
do {
xcf_read_property (src, &prop);
if (prop.id == PROP_OFFSETS) {
l->offset_x = prop.data.offset.x;
l->offset_y = prop.data.offset.y;
} else if (prop.id == PROP_VISIBLE) {
l->visible = prop.data.visible ? 1 : 0;
}
} while (prop.id != PROP_END);
l->hierarchy_file_offset = SDL_ReadBE32 (src);
l->layer_mask_offset = SDL_ReadBE32 (src);
return l;
}
static void free_xcf_channel (xcf_channel * c) {
SDL_free (c->name);
SDL_free (c);
}
static xcf_channel * read_xcf_channel (SDL_RWops * src) {
xcf_channel * l;
xcf_prop prop;
l = (xcf_channel *) SDL_malloc (sizeof (xcf_channel));
l->width = SDL_ReadBE32 (src);
l->height = SDL_ReadBE32 (src);
l->name = read_string (src);
l->selection = 0;
do {
xcf_read_property (src, &prop);
switch (prop.id) {
case PROP_OPACITY:
l->opacity = prop.data.opacity << 24;
break;
case PROP_COLOR:
l->color = ((Uint32) prop.data.color[0] << 16)
| ((Uint32) prop.data.color[1] << 8)
| ((Uint32) prop.data.color[2]);
break;
case PROP_SELECTION:
l->selection = 1;
break;
case PROP_VISIBLE:
l->visible = prop.data.visible ? 1 : 0;
break;
default:
;
}
} while (prop.id != PROP_END);
l->hierarchy_file_offset = SDL_ReadBE32 (src);
return l;
}
static void free_xcf_hierarchy (xcf_hierarchy * h) {
SDL_free (h->level_file_offsets);
SDL_free (h);
}
static xcf_hierarchy * read_xcf_hierarchy (SDL_RWops * src) {
xcf_hierarchy * h;
int i;
h = (xcf_hierarchy *) SDL_malloc (sizeof (xcf_hierarchy));
h->width = SDL_ReadBE32 (src);
h->height = SDL_ReadBE32 (src);
h->bpp = SDL_ReadBE32 (src);
h->level_file_offsets = NULL;
i = 0;
do {
h->level_file_offsets = (Uint32 *) SDL_realloc (h->level_file_offsets, sizeof (Uint32) * (i+1));
h->level_file_offsets [i] = SDL_ReadBE32 (src);
} while (h->level_file_offsets [i++]);
return h;
}
static void free_xcf_level (xcf_level * l) {
SDL_free (l->tile_file_offsets);
SDL_free (l);
}
static xcf_level * read_xcf_level (SDL_RWops * src) {
xcf_level * l;
int i;
l = (xcf_level *) SDL_malloc (sizeof (xcf_level));
l->width = SDL_ReadBE32 (src);
l->height = SDL_ReadBE32 (src);
l->tile_file_offsets = NULL;
i = 0;
do {
l->tile_file_offsets = (Uint32 *) SDL_realloc (l->tile_file_offsets, sizeof (Uint32) * (i+1));
l->tile_file_offsets [i] = SDL_ReadBE32 (src);
} while (l->tile_file_offsets [i++]);
return l;
}
static void free_xcf_tile (unsigned char * t) {
SDL_free (t);
}
static unsigned char * load_xcf_tile_none (SDL_RWops * src, Uint32 len, int bpp, int x, int y) {
unsigned char * load;
load = (unsigned char *) SDL_malloc (len); // expect this is okay
SDL_RWread (src, load, len, 1);
return load;
}
static unsigned char * load_xcf_tile_rle (SDL_RWops * src, Uint32 len, int bpp, int x, int y) {
unsigned char * load, * t, * data, * d;
Uint32 reallen;
int i, size, count, j, length;
unsigned char val;
t = load = (unsigned char *) SDL_malloc (len);
reallen = SDL_RWread (src, t, 1, len);
data = (unsigned char *) SDL_malloc (x*y*bpp);
for (i = 0; i < bpp; i++) {
d = data + i;
size = x*y;
count = 0;
while (size > 0) {
val = *t++;
length = val;
if (length >= 128) {
length = 255 - (length - 1);
if (length == 128) {
length = (*t << 8) + t[1];
t += 2;
}
count += length;
size -= length;
while (length-- > 0) {
*d = *t++;
d += bpp;
}
}
else {
length += 1;
if (length == 128) {
length = (*t << 8) + t[1];
t += 2;
}
count += length;
size -= length;
val = *t++;
for (j = 0; j < length; j++) {
*d = val;
d += bpp;
}
}
}
}
SDL_free (load);
return (data);
}
static Uint32 rgb2grey (Uint32 a) {
Uint8 l;
l = (Uint8)(0.2990 * ((a & 0x00FF0000) >> 16)
+ 0.5870 * ((a & 0x0000FF00) >> 8)
+ 0.1140 * ((a & 0x000000FF)));
return (l << 16) | (l << 8) | l;
}
static void create_channel_surface (SDL_Surface * surf, xcf_image_type itype, Uint32 color, Uint32 opacity) {
Uint32 c = 0;
switch (itype) {
case IMAGE_RGB:
case IMAGE_INDEXED:
c = opacity | color;
break;
case IMAGE_GREYSCALE:
c = opacity | rgb2grey (color);
break;
}
SDL_FillRect (surf, NULL, c);
}
static int do_layer_surface (SDL_Surface * surface, SDL_RWops * src, xcf_header * head, xcf_layer * layer, load_tile_type load_tile) {
xcf_hierarchy * hierarchy;
xcf_level * level;
unsigned char * tile;
Uint8 * p8;
Uint16 * p16;
Uint32 * p;
int i, j;
Uint32 x, y, tx, ty, ox, oy;
Uint32 *row;
SDL_RWseek (src, layer->hierarchy_file_offset, RW_SEEK_SET);
hierarchy = read_xcf_hierarchy (src);
level = NULL;
for (i = 0; hierarchy->level_file_offsets [i]; i++) {
SDL_RWseek (src, hierarchy->level_file_offsets [i], RW_SEEK_SET);
level = read_xcf_level (src);
ty = tx = 0;
for (j = 0; level->tile_file_offsets [j]; j++) {
SDL_RWseek (src, level->tile_file_offsets [j], RW_SEEK_SET);
ox = tx+64 > level->width ? level->width % 64 : 64;
oy = ty+64 > level->height ? level->height % 64 : 64;
if (level->tile_file_offsets [j+1]) {
tile = load_tile
(src,
level->tile_file_offsets [j+1] - level->tile_file_offsets [j],
hierarchy->bpp,
ox, oy);
}
else {
tile = load_tile
(src,
ox*oy*6,
hierarchy->bpp,
ox, oy);
}
p8 = tile;
p16 = (Uint16 *) p8;
p = (Uint32 *) p8;
for (y=ty; y < ty+oy; y++) {
row = (Uint32 *)((Uint8 *)surface->pixels + y*surface->pitch + tx*4);
switch (hierarchy->bpp) {
case 4:
for (x=tx; x < tx+ox; x++)
*row++ = Swap32 (*p++);
break;
case 3:
for (x=tx; x < tx+ox; x++) {
*row = 0xFF000000;
*row |= ((Uint32) *(p8++) << 16);
*row |= ((Uint32) *(p8++) << 8);
*row |= ((Uint32) *(p8++) << 0);
row++;
}
break;
case 2: // Indexed/Greyscale + Alpha
switch (head->image_type) {
case IMAGE_INDEXED:
for (x=tx; x < tx+ox; x++) {
*row = ((Uint32) (head->cm_map [*p8*3]) << 16);
*row |= ((Uint32) (head->cm_map [*p8*3+1]) << 8);
*row |= ((Uint32) (head->cm_map [*p8++*3+2]) << 0);
*row |= ((Uint32) *p8++ << 24);;
row++;
}
break;
case IMAGE_GREYSCALE:
for (x=tx; x < tx+ox; x++) {
*row = ((Uint32) *p8 << 16);
*row |= ((Uint32) *p8 << 8);
*row |= ((Uint32) *p8++ << 0);
*row |= ((Uint32) *p8++ << 24);;
row++;
}
break;
default:
fprintf (stderr, "Unknown Gimp image type (%d)\n", head->image_type);
if (hierarchy)
{
if (hierarchy->level_file_offsets)
SDL_free(hierarchy->level_file_offsets);
free_xcf_hierarchy(hierarchy);
}
if (level)
free_xcf_level (level);
return 1;
}
break;
case 1: // Indexed/Greyscale
switch (head->image_type) {
case IMAGE_INDEXED:
for (x = tx; x < tx+ox; x++) {
*row++ = 0xFF000000
| ((Uint32) (head->cm_map [*p8*3]) << 16)
| ((Uint32) (head->cm_map [*p8*3+1]) << 8)
| ((Uint32) (head->cm_map [*p8*3+2]) << 0);
p8++;
}
break;
case IMAGE_GREYSCALE:
for (x=tx; x < tx+ox; x++) {
*row++ = 0xFF000000
| (((Uint32) (*p8)) << 16)
| (((Uint32) (*p8)) << 8)
| (((Uint32) (*p8)) << 0);
++p8;
}
break;
default:
fprintf (stderr, "Unknown Gimp image type (%d)\n", head->image_type);
if (tile)
free_xcf_tile (tile);
if (level)
free_xcf_level (level);
if (hierarchy)
free_xcf_hierarchy (hierarchy);
return 1;
}
break;
}
}
tx += 64;
if (tx >= level->width) {
tx = 0;
ty += 64;
}
if (ty >= level->height) {
break;
}
free_xcf_tile (tile);
}
free_xcf_level (level);
}
free_xcf_hierarchy (hierarchy);
return 0;
}
SDL_Surface *IMG_LoadXCF_RW(SDL_RWops *src)
{
Sint64 start;
const char *error = NULL;
SDL_Surface *surface, *lays;
xcf_header * head;
xcf_layer * layer;
xcf_channel ** channel;
int chnls, i, offsets;
Sint64 offset, fp;
unsigned char * (* load_tile) (SDL_RWops *, Uint32, int, int, int);
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
/* Initialize the data we will clean up when we're done */
surface = NULL;
head = read_xcf_header (src);
switch (head->compr) {
case COMPR_NONE:
load_tile = load_xcf_tile_none;
break;
case COMPR_RLE:
load_tile = load_xcf_tile_rle;
break;
default:
fprintf (stderr, "Unsupported Compression.\n");
free_xcf_header (head);
return NULL;
}
/* Create the surface of the appropriate type */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, head->width, head->height, 32,
0x00FF0000,0x0000FF00,0x000000FF,0xFF000000);
if ( surface == NULL ) {
error = "Out of memory";
goto done;
}
offsets = 0;
while ((offset = SDL_ReadBE32 (src))) {
head->layer_file_offsets = (Uint32 *) SDL_realloc (head->layer_file_offsets, sizeof (Uint32) * (offsets+1));
head->layer_file_offsets [offsets] = (Uint32)offset;
offsets++;
}
fp = SDL_RWtell (src);
lays = SDL_CreateRGBSurface(SDL_SWSURFACE, head->width, head->height, 32,
0x00FF0000,0x0000FF00,0x000000FF,0xFF000000);
if ( lays == NULL ) {
error = "Out of memory";
goto done;
}
// Blit layers backwards, because Gimp saves them highest first
for (i = offsets; i > 0; i--) {
SDL_Rect rs, rd;
SDL_RWseek (src, head->layer_file_offsets [i-1], RW_SEEK_SET);
layer = read_xcf_layer (src);
do_layer_surface (lays, src, head, layer, load_tile);
rs.x = 0;
rs.y = 0;
rs.w = layer->width;
rs.h = layer->height;
rd.x = layer->offset_x;
rd.y = layer->offset_y;
rd.w = layer->width;
rd.h = layer->height;
if (layer->visible)
SDL_BlitSurface (lays, &rs, surface, &rd);
free_xcf_layer (layer);
}
SDL_FreeSurface (lays);
SDL_RWseek (src, fp, RW_SEEK_SET);
// read channels
channel = NULL;
chnls = 0;
while ((offset = SDL_ReadBE32 (src))) {
channel = (xcf_channel **) SDL_realloc (channel, sizeof (xcf_channel *) * (chnls+1));
fp = SDL_RWtell (src);
SDL_RWseek (src, offset, RW_SEEK_SET);
channel [chnls++] = (read_xcf_channel (src));
SDL_RWseek (src, fp, RW_SEEK_SET);
}
if (chnls) {
SDL_Surface * chs;
chs = SDL_CreateRGBSurface(SDL_SWSURFACE, head->width, head->height, 32,
0x00FF0000,0x0000FF00,0x000000FF,0xFF000000);
if (chs == NULL) {
error = "Out of memory";
goto done;
}
for (i = 0; i < chnls; i++) {
// printf ("CNLBLT %i\n", i);
if (!channel [i]->selection && channel [i]->visible) {
create_channel_surface (chs, (xcf_image_type)head->image_type, channel [i]->color, channel [i]->opacity);
SDL_BlitSurface (chs, NULL, surface, NULL);
}
free_xcf_channel (channel [i]);
}
SDL_FreeSurface (chs);
}
done:
free_xcf_header (head);
if ( error ) {
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
IMG_SetError(error);
}
return(surface);
}
#else
/* See if an image is contained in a data source */
int IMG_isXCF(SDL_RWops *src)
{
return(0);
}
/* Load a XCF type image from an SDL datasource */
SDL_Surface *IMG_LoadXCF_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_XCF */
libs/SDL2_image-2.0.0/IMG_xpm.c
-1187
View File
File diff suppressed because it is too large Load Diff
libs/SDL2_image-2.0.0/IMG_xv.c
-165
View File
@@ -1,165 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is a XV thumbnail image file loading framework */
#include <stdio.h>
#include <string.h>
#include "SDL_image.h"
#ifdef LOAD_XV
static int get_line(SDL_RWops *src, char *line, int size)
{
while ( size > 0 ) {
if ( SDL_RWread(src, line, 1, 1) <= 0 ) {
return -1;
}
if ( *line == '\r' ) {
continue;
}
if ( *line == '\n' ) {
*line = '\0';
return 0;
}
++line;
--size;
}
/* Out of space for the line */
return -1;
}
static int get_header(SDL_RWops *src, int *w, int *h)
{
char line[1024];
*w = 0;
*h = 0;
/* Check the header magic */
if ( (get_line(src, line, sizeof(line)) < 0) ||
(SDL_memcmp(line, "P7 332", 6) != 0) ) {
return -1;
}
/* Read the header */
while ( get_line(src, line, sizeof(line)) == 0 ) {
if ( SDL_memcmp(line, "#BUILTIN:", 9) == 0 ) {
/* Builtin image, no data */
break;
}
if ( SDL_memcmp(line, "#END_OF_COMMENTS", 16) == 0 ) {
if ( get_line(src, line, sizeof(line)) == 0 ) {
SDL_sscanf(line, "%d %d", w, h);
if ( *w >= 0 && *h >= 0 ) {
return 0;
}
}
break;
}
}
/* No image data */
return -1;
}
/* See if an image is contained in a data source */
int IMG_isXV(SDL_RWops *src)
{
Sint64 start;
int is_XV;
int w, h;
if ( !src )
return 0;
start = SDL_RWtell(src);
is_XV = 0;
if ( get_header(src, &w, &h) == 0 ) {
is_XV = 1;
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_XV);
}
/* Load a XV thumbnail image from an SDL datasource */
SDL_Surface *IMG_LoadXV_RW(SDL_RWops *src)
{
Sint64 start;
const char *error = NULL;
SDL_Surface *surface = NULL;
int w, h;
Uint8 *pixels;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
/* Read the header */
if ( get_header(src, &w, &h) < 0 ) {
error = "Unsupported image format";
goto done;
}
/* Create the 3-3-2 indexed palette surface */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 8, 0xe0, 0x1c, 0x03, 0);
if ( surface == NULL ) {
error = "Out of memory";
goto done;
}
/* Load the image data */
for ( pixels = (Uint8 *)surface->pixels; h > 0; --h ) {
if ( SDL_RWread(src, pixels, w, 1) <= 0 ) {
error = "Couldn't read image data";
goto done;
}
pixels += surface->pitch;
}
done:
if ( error ) {
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
IMG_SetError(error);
}
return surface;
}
#else
/* See if an image is contained in a data source */
int IMG_isXV(SDL_RWops *src)
{
return(0);
}
/* Load a XXX type image from an SDL datasource */
SDL_Surface *IMG_LoadXV_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_XV */
libs/SDL2_image-2.0.0/IMG_xxx.c
-87
View File
@@ -1,87 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is a generic "format not supported" image framework */
#include <stdio.h>
#include "SDL_image.h"
#ifdef LOAD_XXX
/* See if an image is contained in a data source */
int IMG_isXXX(SDL_RWops *src)
{
int start;
int is_XXX;
if ( !src )
return 0;
start = SDL_RWtell(src);
is_XXX = 0;
/* Detect the image here */
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_XXX);
}
/* Load a XXX type image from an SDL datasource */
SDL_Surface *IMG_LoadXXX_RW(SDL_RWops *src)
{
int start;
const char *error = NULL;
SDL_Surface *surface = NULL;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
/* Load the image here */
if ( error ) {
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
IMG_SetError(error);
}
return surface;
}
#else
/* See if an image is contained in a data source */
int IMG_isXXX(SDL_RWops *src)
{
return(0);
}
/* Load a XXX type image from an SDL datasource */
SDL_Surface *IMG_LoadXXX_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_XXX */
libs/SDL2_image-2.0.0/Makefile.am
-78
View File
@@ -1,78 +0,0 @@
# Makefile.am for the SDL sample image loading library and viewer
lib_LTLIBRARIES = libSDL2_image.la
libSDL2_imageincludedir = $(includedir)/SDL2
libSDL2_imageinclude_HEADERS = \
SDL_image.h
if USE_IMAGEIO
IMAGEIO_SOURCE = IMG_ImageIO.m
endif
libSDL2_image_la_SOURCES = \
IMG.c \
IMG_bmp.c \
IMG_gif.c \
IMG_jpg.c \
IMG_lbm.c \
IMG_pcx.c \
IMG_png.c \
IMG_pnm.c \
IMG_tga.c \
IMG_tif.c \
IMG_xcf.c \
IMG_xpm.c \
IMG_xv.c \
IMG_webp.c \
$(IMAGEIO_SOURCE) \
miniz.h
EXTRA_DIST = \
Android.mk \
debian \
external \
version.rc \
VisualC \
VisualCE \
Xcode \
Xcode-iOS \
IMG_xxx.c \
$(srcdir)/*.m \
SDL2_image.spec \
gcc-fat.sh \
autogen.sh \
$(srcdir)/*.txt
if USE_VERSION_RC
libSDL2_image_la_LDFLAGS = \
-no-undefined \
-release $(LT_RELEASE) \
-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE) -Wl,version.o
libSDL2_image_la_LIBADD = $(IMG_LIBS)
libSDL2_image_la_DEPENDENCIES = version.o
else
libSDL2_image_la_LDFLAGS = \
-no-undefined \
-release $(LT_RELEASE) \
-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
libSDL2_image_la_LIBADD = $(IMG_LIBS)
endif
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = SDL2_image.pc
%.o : %.rc
$(WINDRES) $< $@
noinst_PROGRAMS = showimage
showimage_LDADD = libSDL2_image.la
# Rule to build tar-gzipped distribution package
$(PACKAGE)-$(VERSION).tar.gz: distcheck
# Rule to build RPM distribution package
rpm: $(PACKAGE)-$(VERSION).tar.gz
rpmbuild -ta $(PACKAGE)-$(VERSION).tar.gz
libs/SDL2_image-2.0.0/Makefile.in
-998
View File
@@ -1,998 +0,0 @@
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IMG_png.c \
IMG_pnm.c \
IMG_tga.c \
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IMG_xcf.c \
IMG_xpm.c \
IMG_xv.c \
IMG_webp.c \
$(IMAGEIO_SOURCE) \
miniz.h
EXTRA_DIST = \
Android.mk \
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-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
maintainer-clean-generic:
@echo "This command is intended for maintainers to use"
@echo "it deletes files that may require special tools to rebuild."
clean: clean-am
clean-am: clean-generic clean-libLTLIBRARIES clean-libtool \
clean-noinstPROGRAMS mostlyclean-am
distclean: distclean-am
-rm -f $(am__CONFIG_DISTCLEAN_FILES)
-rm -rf ./$(DEPDIR)
-rm -f Makefile
distclean-am: clean-am distclean-compile distclean-generic \
distclean-libtool distclean-tags
dvi: dvi-am
dvi-am:
html: html-am
html-am:
info: info-am
info-am:
install-data-am: install-libSDL2_imageincludeHEADERS \
install-pkgconfigDATA
install-dvi: install-dvi-am
install-dvi-am:
install-exec-am: install-libLTLIBRARIES
install-html: install-html-am
install-html-am:
install-info: install-info-am
install-info-am:
install-man:
install-pdf: install-pdf-am
install-pdf-am:
install-ps: install-ps-am
install-ps-am:
installcheck-am:
maintainer-clean: maintainer-clean-am
-rm -f $(am__CONFIG_DISTCLEAN_FILES)
-rm -rf $(top_srcdir)/autom4te.cache
-rm -rf ./$(DEPDIR)
-rm -f Makefile
maintainer-clean-am: distclean-am maintainer-clean-generic
mostlyclean: mostlyclean-am
mostlyclean-am: mostlyclean-compile mostlyclean-generic \
mostlyclean-libtool
pdf: pdf-am
pdf-am:
ps: ps-am
ps-am:
uninstall-am: uninstall-libLTLIBRARIES \
uninstall-libSDL2_imageincludeHEADERS uninstall-pkgconfigDATA
.MAKE: install-am install-strip
.PHONY: CTAGS GTAGS TAGS all all-am am--refresh check check-am clean \
clean-cscope clean-generic clean-libLTLIBRARIES clean-libtool \
clean-noinstPROGRAMS cscope cscopelist-am ctags ctags-am dist \
dist-all dist-bzip2 dist-gzip dist-lzip dist-shar dist-tarZ \
dist-xz dist-zip distcheck distclean distclean-compile \
distclean-generic distclean-libtool distclean-tags \
distcleancheck distdir distuninstallcheck dvi dvi-am html \
html-am info info-am install install-am install-data \
install-data-am install-dvi install-dvi-am install-exec \
install-exec-am install-html install-html-am install-info \
install-info-am install-libLTLIBRARIES \
install-libSDL2_imageincludeHEADERS install-man install-pdf \
install-pdf-am install-pkgconfigDATA install-ps install-ps-am \
install-strip installcheck installcheck-am installdirs \
maintainer-clean maintainer-clean-generic mostlyclean \
mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
pdf pdf-am ps ps-am tags tags-am uninstall uninstall-am \
uninstall-libLTLIBRARIES uninstall-libSDL2_imageincludeHEADERS \
uninstall-pkgconfigDATA
%.o : %.rc
$(WINDRES) $< $@
# Rule to build tar-gzipped distribution package
$(PACKAGE)-$(VERSION).tar.gz: distcheck
# Rule to build RPM distribution package
rpm: $(PACKAGE)-$(VERSION).tar.gz
rpmbuild -ta $(PACKAGE)-$(VERSION).tar.gz
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:
libs/SDL2_image-2.0.0/README.txt
-40
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@@ -1,40 +0,0 @@
SDL_image 2.0
The latest version of this library is available from:
http://www.libsdl.org/projects/SDL_image/
This is a simple library to load images of various formats as SDL surfaces.
This library supports BMP, PNM (PPM/PGM/PBM), XPM, LBM, PCX, GIF, JPEG, PNG,
TGA, and TIFF formats.
API:
#include "SDL_image.h"
SDL_Surface *IMG_Load(const char *file);
or
SDL_Surface *IMG_Load_RW(SDL_RWops *src, int freesrc);
or
SDL_Surface *IMG_LoadTyped_RW(SDL_RWops *src, int freesrc, char *type);
where type is a string specifying the format (i.e. "PNG" or "pcx").
Note that IMG_Load_RW cannot load TGA images.
To create a surface from an XPM image included in C source, use:
SDL_Surface *IMG_ReadXPMFromArray(char **xpm);
An example program 'showimage' is included, with source in showimage.c
JPEG support requires the JPEG library: http://www.ijg.org/
PNG support requires the PNG library: http://www.libpng.org/pub/png/libpng.html
and the Zlib library: http://www.gzip.org/zlib/
TIFF support requires the TIFF library: ftp://ftp.sgi.com/graphics/tiff/
If you have these libraries installed in non-standard places, you can
try adding those paths to the configure script, e.g.
sh ./configure CPPFLAGS="-I/somewhere/include" LDFLAGS="-L/somewhere/lib"
If this works, you may need to add /somewhere/lib to your LD_LIBRARY_PATH
so shared library loading works correctly.
This library is under the zlib License, see the file "COPYING.txt" for details.
libs/SDL2_image-2.0.0/SDL2_image.pc.in
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@@ -1,12 +0,0 @@
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
Name: @PACKAGE@
Description: image loading library for Simple DirectMedia Layer
Version: @VERSION@
Requires: sdl2 >= @SDL_VERSION@
Libs: -L${libdir} -lSDL2_image
Cflags: -I${includedir}/SDL2
libs/SDL2_image-2.0.0/SDL2_image.spec
-69
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@@ -1,69 +0,0 @@
%define name SDL2_image
%define version 2.0.0
%define release 1
Summary: Simple DirectMedia Layer - Sample Image Loading Library
Name: %{name}
Version: %{version}
Release: %{release}
Source0: %{name}-%{version}.tar.gz
License: LGPL
Group: System Environment/Libraries
BuildRoot: /var/tmp/%{name}-buildroot
Prefix: %{_prefix}
Packager: Hakan Tandogan <hakan@iconsult.com>
#BuildRequires: SDL2-devel
#BuildRequires: libjpeg-devel
#BuildRequires: libpng-devel
#BuildRequires: libtiff-devel
%description
This is a simple library to load images of various formats as SDL surfaces.
This library supports BMP, PPM, PCX, GIF, JPEG, PNG, and TIFF formats.
%package devel
Summary: Libraries, includes and more to develop SDL applications.
Group: Development/Libraries
Requires: %{name}
Requires: SDL2-devel
%description devel
This is a simple library to load images of various formats as SDL surfaces.
This library supports BMP, PPM, PCX, GIF, JPEG, PNG, and TIFF formats.
%prep
rm -rf ${RPM_BUILD_ROOT}
%setup
%build
CFLAGS="$RPM_OPT_FLAGS" ./configure --prefix=%{prefix}
make
%install
rm -rf $RPM_BUILD_ROOT
make install prefix=$RPM_BUILD_ROOT/%{prefix}
%clean
rm -rf $RPM_BUILD_ROOT
%files
%defattr(-,root,root)
%doc README.txt CHANGES.txt COPYING.txt
%{prefix}/lib/lib*.so.*
%files devel
%defattr(-,root,root)
%{prefix}/lib/lib*.a
%{prefix}/lib/lib*.la
%{prefix}/lib/lib*.so
%{prefix}/include/*/
%{prefix}/lib/pkgconfig/*.pc
%changelog
* Wed Jan 19 2000 Sam Lantinga
- converted to get package information from configure
* Tue Jan 18 2000 Hakan Tandogan <hakan@iconsult.com>
- initial spec file
libs/SDL2_image-2.0.0/SDL2_image.spec.in
-69
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@@ -1,69 +0,0 @@
%define name @PACKAGE@
%define version @VERSION@
%define release 1
Summary: Simple DirectMedia Layer - Sample Image Loading Library
Name: %{name}
Version: %{version}
Release: %{release}
Source0: %{name}-%{version}.tar.gz
License: LGPL
Group: System Environment/Libraries
BuildRoot: /var/tmp/%{name}-buildroot
Prefix: %{_prefix}
Packager: Hakan Tandogan <hakan@iconsult.com>
#BuildRequires: SDL2-devel
#BuildRequires: libjpeg-devel
#BuildRequires: libpng-devel
#BuildRequires: libtiff-devel
%description
This is a simple library to load images of various formats as SDL surfaces.
This library supports BMP, PPM, PCX, GIF, JPEG, PNG, and TIFF formats.
%package devel
Summary: Libraries, includes and more to develop SDL applications.
Group: Development/Libraries
Requires: %{name}
Requires: SDL2-devel
%description devel
This is a simple library to load images of various formats as SDL surfaces.
This library supports BMP, PPM, PCX, GIF, JPEG, PNG, and TIFF formats.
%prep
rm -rf ${RPM_BUILD_ROOT}
%setup
%build
CFLAGS="$RPM_OPT_FLAGS" ./configure --prefix=%{prefix}
make
%install
rm -rf $RPM_BUILD_ROOT
make install prefix=$RPM_BUILD_ROOT/%{prefix}
%clean
rm -rf $RPM_BUILD_ROOT
%files
%defattr(-,root,root)
%doc README.txt CHANGES.txt COPYING.txt
%{prefix}/lib/lib*.so.*
%files devel
%defattr(-,root,root)
%{prefix}/lib/lib*.a
%{prefix}/lib/lib*.la
%{prefix}/lib/lib*.so
%{prefix}/include/*/
%{prefix}/lib/pkgconfig/*.pc
%changelog
* Wed Jan 19 2000 Sam Lantinga
- converted to get package information from configure
* Tue Jan 18 2000 Hakan Tandogan <hakan@iconsult.com>
- initial spec file
libs/SDL2_image-2.0.0/SDL_image.h
-145
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@@ -1,145 +0,0 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* A simple library to load images of various formats as SDL surfaces */
#ifndef _SDL_IMAGE_H
#define _SDL_IMAGE_H
#include "SDL.h"
#include "SDL_version.h"
#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif
/* Printable format: "%d.%d.%d", MAJOR, MINOR, PATCHLEVEL
*/
#define SDL_IMAGE_MAJOR_VERSION 2
#define SDL_IMAGE_MINOR_VERSION 0
#define SDL_IMAGE_PATCHLEVEL 0
/* This macro can be used to fill a version structure with the compile-time
* version of the SDL_image library.
*/
#define SDL_IMAGE_VERSION(X) \
{ \
(X)->major = SDL_IMAGE_MAJOR_VERSION; \
(X)->minor = SDL_IMAGE_MINOR_VERSION; \
(X)->patch = SDL_IMAGE_PATCHLEVEL; \
}
/* This function gets the version of the dynamically linked SDL_image library.
it should NOT be used to fill a version structure, instead you should
use the SDL_IMAGE_VERSION() macro.
*/
extern DECLSPEC const SDL_version * SDLCALL IMG_Linked_Version(void);
typedef enum
{
IMG_INIT_JPG = 0x00000001,
IMG_INIT_PNG = 0x00000002,
IMG_INIT_TIF = 0x00000004,
IMG_INIT_WEBP = 0x00000008
} IMG_InitFlags;
/* Loads dynamic libraries and prepares them for use. Flags should be
one or more flags from IMG_InitFlags OR'd together.
It returns the flags successfully initialized, or 0 on failure.
*/
extern DECLSPEC int SDLCALL IMG_Init(int flags);
/* Unloads libraries loaded with IMG_Init */
extern DECLSPEC void SDLCALL IMG_Quit(void);
/* Load an image from an SDL data source.
The 'type' may be one of: "BMP", "GIF", "PNG", etc.
If the image format supports a transparent pixel, SDL will set the
colorkey for the surface. You can enable RLE acceleration on the
surface afterwards by calling:
SDL_SetColorKey(image, SDL_RLEACCEL, image->format->colorkey);
*/
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadTyped_RW(SDL_RWops *src, int freesrc, const char *type);
/* Convenience functions */
extern DECLSPEC SDL_Surface * SDLCALL IMG_Load(const char *file);
extern DECLSPEC SDL_Surface * SDLCALL IMG_Load_RW(SDL_RWops *src, int freesrc);
#if SDL_VERSION_ATLEAST(2,0,0)
/* Load an image directly into a render texture.
*/
extern DECLSPEC SDL_Texture * SDLCALL IMG_LoadTexture(SDL_Renderer *renderer, const char *file);
extern DECLSPEC SDL_Texture * SDLCALL IMG_LoadTexture_RW(SDL_Renderer *renderer, SDL_RWops *src, int freesrc);
extern DECLSPEC SDL_Texture * SDLCALL IMG_LoadTextureTyped_RW(SDL_Renderer *renderer, SDL_RWops *src, int freesrc, const char *type);
#endif /* SDL 2.0 */
/* Functions to detect a file type, given a seekable source */
extern DECLSPEC int SDLCALL IMG_isICO(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isCUR(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isBMP(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isGIF(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isJPG(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isLBM(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isPCX(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isPNG(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isPNM(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isTIF(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isXCF(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isXPM(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isXV(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isWEBP(SDL_RWops *src);
/* Individual loading functions */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadICO_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadCUR_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadBMP_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadGIF_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadJPG_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadLBM_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadPCX_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadPNG_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadPNM_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadTGA_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadTIF_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadXCF_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadXPM_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadXV_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadWEBP_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_ReadXPMFromArray(char **xpm);
/* Individual saving functions */
extern DECLSPEC int SDLCALL IMG_SavePNG(SDL_Surface *surface, const char *file);
extern DECLSPEC int SDLCALL IMG_SavePNG_RW(SDL_Surface *surface, SDL_RWops *dst, int freedst);
/* We'll use SDL for reporting errors */
#define IMG_SetError SDL_SetError
#define IMG_GetError SDL_GetError
/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"
#endif /* _SDL_IMAGE_H */
libs/SDL2_image-2.0.0/aclocal.m4
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libs/SDL2_image-2.0.0/autogen.sh
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#!/bin/sh
#
aclocal -I acinclude
automake --foreign --include-deps --add-missing --copy
autoconf
#./configure $*
echo "Now you are ready to run ./configure"
libs/SDL2_image-2.0.0/config.guess
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libs/SDL2_image-2.0.0/config.sub
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libs/SDL2_image-2.0.0/configure
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libs/SDL2_image-2.0.0/configure.in
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dnl Process this file with autoconf to produce a configure script.
AC_INIT(README.txt)
dnl Set various version strings - taken gratefully from the GTk sources
# Making releases:
# MICRO_VERSION += 1;
# INTERFACE_AGE += 1;
# BINARY_AGE += 1;
# if any functions have been added, set INTERFACE_AGE to 0.
# if backwards compatibility has been broken,
# set BINARY_AGE and INTERFACE_AGE to 0.
MAJOR_VERSION=2
MINOR_VERSION=0
MICRO_VERSION=0
INTERFACE_AGE=0
BINARY_AGE=0
VERSION=$MAJOR_VERSION.$MINOR_VERSION.$MICRO_VERSION
AC_SUBST(MAJOR_VERSION)
AC_SUBST(MINOR_VERSION)
AC_SUBST(MICRO_VERSION)
AC_SUBST(INTERFACE_AGE)
AC_SUBST(BINARY_AGE)
AC_SUBST(VERSION)
# libtool versioning
LT_INIT([win32-dll])
LT_RELEASE=$MAJOR_VERSION.$MINOR_VERSION
LT_CURRENT=`expr $MICRO_VERSION - $INTERFACE_AGE`
LT_REVISION=$INTERFACE_AGE
LT_AGE=`expr $BINARY_AGE - $INTERFACE_AGE`
AC_SUBST(LT_RELEASE)
AC_SUBST(LT_CURRENT)
AC_SUBST(LT_REVISION)
AC_SUBST(LT_AGE)
dnl Detect the canonical build and host environments
AC_CANONICAL_HOST
dnl Setup for automake
AM_INIT_AUTOMAKE(SDL2_image, $VERSION)
dnl Check for tools
AC_PROG_LIBTOOL
AC_PROG_CC
AC_PROG_OBJC
AC_C_INLINE
AC_PROG_INSTALL
AC_PROG_MAKE_SET
if test -z "$host_alias"; then
hostaliaswindres=
else
hostaliaswindres="$host_alias-windres"
fi
AC_CHECK_PROGS(WINDRES, [windres $hostaliaswindres $host_os-windres])
case "$host" in
*-*-beos*)
ac_default_prefix=/boot/develop/tools/gnupro
;;
*-*-cygwin* | *-*-mingw32*)
if test "$build" != "$host"; then # cross-compiling
# Default cross-compile location
ac_default_prefix=/usr/local/cross-tools/i386-mingw32
else
# Look for the location of the tools and install there
if test "$BUILD_PREFIX" != ""; then
ac_default_prefix=$BUILD_PREFIX
fi
fi
if test x$WINDRES != x; then
use_version_rc=true
fi
;;
*-*-darwin*)
AC_ARG_ENABLE([imageio], [AC_HELP_STRING([--enable-imageio], [use native Mac OS X frameworks for loading images [default=yes]])],
[], [enable_imageio=yes])
if test x$enable_imageio = xyes; then
IMG_LIBS="-Wl,-framework,ApplicationServices $IMG_LIBS"
else
CFLAGS="$CFLAGS -DSDL_IMAGE_USE_COMMON_BACKEND"
fi
;;
esac
AM_CONDITIONAL(USE_IMAGEIO, test x$enable_imageio = xyes)
AM_CONDITIONAL(USE_VERSION_RC, test x$use_version_rc = xtrue)
dnl set this to use on systems that use lib64 instead of lib
base_libdir=`echo \${libdir} | sed 's/.*\/\(.*\)/\1/; q'`
dnl Function to find a library in the compiler search path
find_lib()
{
gcc_bin_path=[`$CC -print-search-dirs 2>/dev/null | fgrep programs: | sed 's/[^=]*=\(.*\)/\1/' | sed 's/:/ /g'`]
gcc_lib_path=[`$CC -print-search-dirs 2>/dev/null | fgrep libraries: | sed 's/[^=]*=\(.*\)/\1/' | sed 's/:/ /g'`]
env_lib_path=[`echo $LIBS $LDFLAGS $* | sed 's/-L[ ]*//g'`]
if test "$cross_compiling" = yes; then
host_lib_path=""
else
host_lib_path="/usr/$base_libdir /usr/local/$base_libdir"
fi
for path in $gcc_bin_path $gcc_lib_path $env_lib_path $host_lib_path; do
lib=[`ls -- $path/$1 2>/dev/null | sed -e '/\.so\..*\./d' -e 's,.*/,,' | sort | tail -1`]
if test x$lib != x; then
echo $lib
return
fi
done
}
dnl Check for SDL
SDL_VERSION=2.0.0
AC_SUBST(SDL_VERSION)
AM_PATH_SDL2($SDL_VERSION,
:,
AC_MSG_ERROR([*** SDL version $SDL_VERSION not found!])
)
CFLAGS="$CFLAGS $SDL_CFLAGS"
LIBS="$LIBS $SDL_LIBS"
saved_LIBS="$LIBS"
dnl Check command-line options
AC_ARG_ENABLE([bmp], [AC_HELP_STRING([--enable-bmp], [support loading BMP/ICO/CUR images [default=yes]])],
[], [enable_bmp=yes])
AC_ARG_ENABLE([gif], [AC_HELP_STRING([--enable-gif], [support loading GIF images [default=yes]])],
[], [enable_gif=yes])
AC_ARG_ENABLE([jpg], [AC_HELP_STRING([--enable-jpg], [support loading JPG images [default=yes]])],
[], [enable_jpg=yes])
AC_ARG_ENABLE([jpg-shared], AC_HELP_STRING([--enable-jpg-shared], [dynamically load JPG support [[default=yes]]]),
[], [enable_jpg_shared=yes])
AC_ARG_ENABLE([lbm], [AC_HELP_STRING([--enable-lbm], [support loading LBM images [default=yes]])],
[], [enable_lbm=yes])
AC_ARG_ENABLE([pcx], [AC_HELP_STRING([--enable-pcx], [support loading PCX images [default=yes]])],
[], [enable_pcx=yes])
AC_ARG_ENABLE([png], [AC_HELP_STRING([--enable-png], [support loading PNG images [default=yes]])],
[], [enable_png=yes])
AC_ARG_ENABLE([png-shared], AC_HELP_STRING([--enable-png-shared], [dynamically load PNG support [[default=yes]]]),
[], [enable_png_shared=yes])
AC_ARG_ENABLE([pnm], [AC_HELP_STRING([--enable-pnm], [support loading PNM images [default=yes]])],
[], [enable_pnm=yes])
AC_ARG_ENABLE([tga], [AC_HELP_STRING([--enable-tga], [support loading TGA images [default=yes]])],
[], [enable_tga=yes])
AC_ARG_ENABLE([tif], [AC_HELP_STRING([--enable-tif], [support loading TIFF images [default=yes]])],
[], [enable_tif=yes])
AC_ARG_ENABLE([tif-shared], AC_HELP_STRING([--enable-tif-shared], [dynamically load TIFF support [[default=yes]]]),
[], [enable_tif_shared=yes])
AC_ARG_ENABLE([xcf], [AC_HELP_STRING([--enable-xcf], [support loading XCF images [default=yes]])],
[], [enable_xcf=yes])
AC_ARG_ENABLE([xpm], [AC_HELP_STRING([--enable-xpm], [support loading XPM images [default=yes]])],
[], [enable_xpm=yes])
AC_ARG_ENABLE([xv], [AC_HELP_STRING([--enable-xv], [support loading XV images [default=yes]])],
[], [enable_xv=yes])
AC_ARG_ENABLE([webp], [AC_HELP_STRING([--enable-webp], [support loading WEBP images [default=yes]])],
[], [enable_webp=yes])
AC_ARG_ENABLE([webp-shared], AC_HELP_STRING([--enable-webp-shared], [dynamically load WEBP support [[default=yes]]]),
[], [enable_webp_shared=yes])
dnl Show a message when we use ImageIO support so it's not a surprise
AC_MSG_CHECKING([for ImageIO support])
AC_MSG_RESULT($enable_imageio)
if (test x$enable_jpg = xyes || test x$enable_tif = xyes) && test x$enable_imageio != xyes; then
AC_CHECK_HEADER([jpeglib.h], [have_jpg_hdr=yes])
AC_CHECK_LIB([jpeg], [jpeg_CreateDecompress], [have_jpg_lib=yes])
if test x$have_jpg_hdr = xyes -a x$have_jpg_lib = xyes; then
if test x$enable_jpg = xyes; then
AC_DEFINE([LOAD_JPG])
fi
LIBS="-ljpeg $LIBS"
case "$host" in
*-*-darwin*)
jpg_lib=[`find_lib libjpeg.dylib`]
;;
*-*-cygwin* | *-*-mingw32*)
jpg_lib=[`find_lib "libjpeg*.dll"`]
;;
*)
jpg_lib=[`find_lib "libjpeg[0-9]*.so.*"`]
if test x$jpg_lib = x; then
jpg_lib=[`find_lib "libjpeg.so.*"`]
fi
;;
esac
elif test x$enable_jpg = xyes; then
AC_MSG_WARN([*** Unable to find JPEG library (http://www.ijg.org/)])
AC_MSG_WARN([JPG image loading disabled])
fi
fi
if test x$enable_png = xyes -a x$enable_imageio != xyes; then
PKG_CHECK_MODULES([LIBPNG], [libpng], [dnl
have_png_hdr=yes
CFLAGS="$LIBPNG_CFLAGS $CFLAGS"
have_png_lib=yes
], [dnl
AC_CHECK_HEADER([png.h], [have_png_hdr=yes])
AC_CHECK_LIB([png], [png_create_read_struct], [have_png_lib=yes], [], [-lz])
])
if test x$have_png_hdr = xyes -a x$have_png_lib = xyes; then
AC_DEFINE([LOAD_PNG])
case "$host" in
*-*-darwin*)
png_lib=[`find_lib libpng.dylib`]
;;
*-*-cygwin* | *-*-mingw32*)
png_lib=[`find_lib "libpng*.dll"`]
;;
*)
png_lib=[`find_lib "libpng[0-9]*.so.*"`]
if test x$png_lib = x; then
png_lib=[`find_lib "libpng.so.*"`]
fi
;;
esac
else
AC_MSG_WARN([*** Unable to find PNG library (http://www.libpng.org/pub/png/libpng.html)])
AC_MSG_WARN([PNG image loading disabled])
fi
fi
if test x$enable_tif = xyes -a x$enable_imageio != xyes; then
AC_CHECK_HEADER([tiffio.h], [have_tif_hdr=yes])
AC_CHECK_LIB([tiff], [TIFFClientOpen], [have_tif_lib=yes], [], [-lz])
if test x$have_tif_hdr = xyes -a x$have_tif_lib = xyes; then
AC_DEFINE([LOAD_TIF])
case "$host" in
*-*-darwin*)
tif_lib=[`find_lib libtiff.dylib`]
;;
*-*-cygwin* | *-*-mingw32*)
tif_lib=[`find_lib "libtiff-*.dll"`]
;;
*)
tif_lib=[`find_lib "libtiff[0-9]*.so.*"`]
if test x$tif_lib = x; then
tif_lib=[`find_lib "libtiff.so.*"`]
fi
;;
esac
else
AC_MSG_WARN([*** Unable to find Tiff library (http://www.remotesensing.org/libtiff/)])
AC_MSG_WARN([TIF image loading disabled])
fi
fi
if test x$enable_webp = xyes; then
PKG_CHECK_MODULES([LIBWEBP], [libwebp], [dnl
have_webp_hdr=yes
CFLAGS="$LIBWEBP_CFLAGS $CFLAGS"
have_webp_lib=yes
], [dnl
AC_CHECK_HEADER([webp/decode.h], [have_webp_hdr=yes])
AC_CHECK_LIB([webp], [WebPGetDecoderVersion], [have_webp_lib=yes], [], [-lm])
])
if test x$have_webp_hdr = xyes -a x$have_webp_lib = xyes; then
AC_DEFINE([LOAD_WEBP])
case "$host" in
*-*-darwin*)
webp_lib=[`find_lib libwebp.dylib`]
;;
*-*-cygwin* | *-*-mingw32*)
webp_lib=[`find_lib "libwebp*.dll"`]
;;
*)
webp_lib=[`find_lib "libwebp[0-9]*.so.*"`]
if test x$webp_lib = x; then
webp_lib=[`find_lib "libwebp.so.*"`]
fi
;;
esac
else
AC_MSG_WARN([*** Unable to find WEBP library (http://code.google.com/intl/en-US/speed/webp/index.html)])
AC_MSG_WARN([WEBP Pimage loading disabled])
fi
fi
if test x$enable_bmp = xyes; then
AC_DEFINE([LOAD_BMP])
fi
if test x$enable_gif = xyes; then
AC_DEFINE([LOAD_GIF])
fi
if test x$enable_lbm = xyes; then
AC_DEFINE([LOAD_LBM])
fi
if test x$enable_pcx = xyes; then
AC_DEFINE([LOAD_PCX])
fi
if test x$enable_pnm = xyes; then
AC_DEFINE([LOAD_PNM])
fi
if test x$enable_tga = xyes; then
AC_DEFINE([LOAD_TGA])
fi
if test x$enable_xcf = xyes; then
AC_DEFINE([LOAD_XCF])
fi
if test x$enable_xpm = xyes; then
AC_DEFINE([LOAD_XPM])
fi
if test x$enable_xv = xyes; then
AC_DEFINE([LOAD_XV])
fi
if test x$enable_webp = xyes -a x$have_webp_hdr = xyes -a x$have_webp_lib = xyes; then
if test x$enable_webp_shared = xyes && test x$webp_lib != x; then
echo "-- dynamic libwebp -> $webp_lib"
AC_DEFINE_UNQUOTED(LOAD_WEBP_DYNAMIC, "$webp_lib")
else
IMG_LIBS="-lwebp $IMG_LIBS"
fi
fi
if test x$enable_tif = xyes -a x$have_tif_hdr = xyes -a x$have_tif_lib = xyes; then
if test x$enable_tif_shared = xyes && test x$tif_lib != x; then
echo "-- dynamic libtiff -> $tif_lib"
AC_DEFINE_UNQUOTED(LOAD_TIF_DYNAMIC, "$tif_lib")
else
if test x$have_libjpeg = xyes; then
# Disable dynamic jpeg since we're linking it explicitly
jpg_lib=''
fi
IMG_LIBS="-ltiff -lz $IMG_LIBS"
fi
fi
if test x$enable_jpg = xyes -a x$have_jpg_hdr = xyes -a x$have_jpg_lib = xyes; then
if test x$enable_jpg_shared = xyes && test x$jpg_lib != x; then
echo "-- dynamic libjpeg -> $jpg_lib"
AC_DEFINE_UNQUOTED(LOAD_JPG_DYNAMIC, "$jpg_lib")
else
IMG_LIBS="-ljpeg $IMG_LIBS"
fi
fi
if test x$enable_png = xyes -a x$have_png_hdr = xyes -a x$have_png_lib = xyes; then
if test x$enable_png_shared = xyes && test x$png_lib != x; then
echo "-- dynamic libpng -> $png_lib"
AC_DEFINE_UNQUOTED(LOAD_PNG_DYNAMIC, "$png_lib")
else
IMG_LIBS="-lpng -lz $IMG_LIBS"
fi
fi
LIBS="$saved_LIBS"
AC_SUBST([WINDRES])
AC_SUBST([IMG_LIBS])
OBJCFLAGS=$CFLAGS
# Finally create all the generated files
AC_OUTPUT([
Makefile
SDL2_image.spec
SDL2_image.pc
])
libs/SDL2_image-2.0.0/depcomp
-584
View File
@@ -1,584 +0,0 @@
#! /bin/sh
# depcomp - compile a program generating dependencies as side-effects
scriptversion=2006-10-15.18
# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006 Free Software
# Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
case $1 in
'')
echo "$0: No command. Try \`$0 --help' for more information." 1>&2
exit 1;
;;
-h | --h*)
cat <<\EOF
Usage: depcomp [--help] [--version] PROGRAM [ARGS]
Run PROGRAMS ARGS to compile a file, generating dependencies
as side-effects.
Environment variables:
depmode Dependency tracking mode.
source Source file read by `PROGRAMS ARGS'.
object Object file output by `PROGRAMS ARGS'.
DEPDIR directory where to store dependencies.
depfile Dependency file to output.
tmpdepfile Temporary file to use when outputing dependencies.
libtool Whether libtool is used (yes/no).
Report bugs to <bug-automake@gnu.org>.
EOF
exit $?
;;
-v | --v*)
echo "depcomp $scriptversion"
exit $?
;;
esac
if test -z "$depmode" || test -z "$source" || test -z "$object"; then
echo "depcomp: Variables source, object and depmode must be set" 1>&2
exit 1
fi
# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
depfile=${depfile-`echo "$object" |
sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
rm -f "$tmpdepfile"
# Some modes work just like other modes, but use different flags. We
# parameterize here, but still list the modes in the big case below,
# to make depend.m4 easier to write. Note that we *cannot* use a case
# here, because this file can only contain one case statement.
if test "$depmode" = hp; then
# HP compiler uses -M and no extra arg.
gccflag=-M
depmode=gcc
fi
if test "$depmode" = dashXmstdout; then
# This is just like dashmstdout with a different argument.
dashmflag=-xM
depmode=dashmstdout
fi
case "$depmode" in
gcc3)
## gcc 3 implements dependency tracking that does exactly what
## we want. Yay! Note: for some reason libtool 1.4 doesn't like
## it if -MD -MP comes after the -MF stuff. Hmm.
## Unfortunately, FreeBSD c89 acceptance of flags depends upon
## the command line argument order; so add the flags where they
## appear in depend2.am. Note that the slowdown incurred here
## affects only configure: in makefiles, %FASTDEP% shortcuts this.
for arg
do
case $arg in
-c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
*) set fnord "$@" "$arg" ;;
esac
shift # fnord
shift # $arg
done
"$@"
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
mv "$tmpdepfile" "$depfile"
;;
gcc)
## There are various ways to get dependency output from gcc. Here's
## why we pick this rather obscure method:
## - Don't want to use -MD because we'd like the dependencies to end
## up in a subdir. Having to rename by hand is ugly.
## (We might end up doing this anyway to support other compilers.)
## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
## -MM, not -M (despite what the docs say).
## - Using -M directly means running the compiler twice (even worse
## than renaming).
if test -z "$gccflag"; then
gccflag=-MD,
fi
"$@" -Wp,"$gccflag$tmpdepfile"
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
echo "$object : \\" > "$depfile"
alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
## The second -e expression handles DOS-style file names with drive letters.
sed -e 's/^[^:]*: / /' \
-e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
## This next piece of magic avoids the `deleted header file' problem.
## The problem is that when a header file which appears in a .P file
## is deleted, the dependency causes make to die (because there is
## typically no way to rebuild the header). We avoid this by adding
## dummy dependencies for each header file. Too bad gcc doesn't do
## this for us directly.
tr ' ' '
' < "$tmpdepfile" |
## Some versions of gcc put a space before the `:'. On the theory
## that the space means something, we add a space to the output as
## well.
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
sgi)
if test "$libtool" = yes; then
"$@" "-Wp,-MDupdate,$tmpdepfile"
else
"$@" -MDupdate "$tmpdepfile"
fi
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
echo "$object : \\" > "$depfile"
# Clip off the initial element (the dependent). Don't try to be
# clever and replace this with sed code, as IRIX sed won't handle
# lines with more than a fixed number of characters (4096 in
# IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
# the IRIX cc adds comments like `#:fec' to the end of the
# dependency line.
tr ' ' '
' < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
tr '
' ' ' >> $depfile
echo >> $depfile
# The second pass generates a dummy entry for each header file.
tr ' ' '
' < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
>> $depfile
else
# The sourcefile does not contain any dependencies, so just
# store a dummy comment line, to avoid errors with the Makefile
# "include basename.Plo" scheme.
echo "#dummy" > "$depfile"
fi
rm -f "$tmpdepfile"
;;
aix)
# The C for AIX Compiler uses -M and outputs the dependencies
# in a .u file. In older versions, this file always lives in the
# current directory. Also, the AIX compiler puts `$object:' at the
# start of each line; $object doesn't have directory information.
# Version 6 uses the directory in both cases.
stripped=`echo "$object" | sed 's/\(.*\)\..*$/\1/'`
tmpdepfile="$stripped.u"
if test "$libtool" = yes; then
"$@" -Wc,-M
else
"$@" -M
fi
stat=$?
if test -f "$tmpdepfile"; then :
else
stripped=`echo "$stripped" | sed 's,^.*/,,'`
tmpdepfile="$stripped.u"
fi
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
if test -f "$tmpdepfile"; then
outname="$stripped.o"
# Each line is of the form `foo.o: dependent.h'.
# Do two passes, one to just change these to
# `$object: dependent.h' and one to simply `dependent.h:'.
sed -e "s,^$outname:,$object :," < "$tmpdepfile" > "$depfile"
sed -e "s,^$outname: \(.*\)$,\1:," < "$tmpdepfile" >> "$depfile"
else
# The sourcefile does not contain any dependencies, so just
# store a dummy comment line, to avoid errors with the Makefile
# "include basename.Plo" scheme.
echo "#dummy" > "$depfile"
fi
rm -f "$tmpdepfile"
;;
icc)
# Intel's C compiler understands `-MD -MF file'. However on
# icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
# ICC 7.0 will fill foo.d with something like
# foo.o: sub/foo.c
# foo.o: sub/foo.h
# which is wrong. We want:
# sub/foo.o: sub/foo.c
# sub/foo.o: sub/foo.h
# sub/foo.c:
# sub/foo.h:
# ICC 7.1 will output
# foo.o: sub/foo.c sub/foo.h
# and will wrap long lines using \ :
# foo.o: sub/foo.c ... \
# sub/foo.h ... \
# ...
"$@" -MD -MF "$tmpdepfile"
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
# Each line is of the form `foo.o: dependent.h',
# or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
# Do two passes, one to just change these to
# `$object: dependent.h' and one to simply `dependent.h:'.
sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process this invocation
# correctly. Breaking it into two sed invocations is a workaround.
sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp2)
# The "hp" stanza above does not work with aCC (C++) and HP's ia64
# compilers, which have integrated preprocessors. The correct option
# to use with these is +Maked; it writes dependencies to a file named
# 'foo.d', which lands next to the object file, wherever that
# happens to be.
# Much of this is similar to the tru64 case; see comments there.
dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
test "x$dir" = "x$object" && dir=
base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
if test "$libtool" = yes; then
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir.libs/$base.d
"$@" -Wc,+Maked
else
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir$base.d
"$@" +Maked
fi
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile1" "$tmpdepfile2"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
do
test -f "$tmpdepfile" && break
done
if test -f "$tmpdepfile"; then
sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
# Add `dependent.h:' lines.
sed -ne '2,${; s/^ *//; s/ \\*$//; s/$/:/; p;}' "$tmpdepfile" >> "$depfile"
else
echo "#dummy" > "$depfile"
fi
rm -f "$tmpdepfile" "$tmpdepfile2"
;;
tru64)
# The Tru64 compiler uses -MD to generate dependencies as a side
# effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
# At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
# dependencies in `foo.d' instead, so we check for that too.
# Subdirectories are respected.
dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
test "x$dir" = "x$object" && dir=
base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
if test "$libtool" = yes; then
# With Tru64 cc, shared objects can also be used to make a
# static library. This mechanism is used in libtool 1.4 series to
# handle both shared and static libraries in a single compilation.
# With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
#
# With libtool 1.5 this exception was removed, and libtool now
# generates 2 separate objects for the 2 libraries. These two
# compilations output dependencies in $dir.libs/$base.o.d and
# in $dir$base.o.d. We have to check for both files, because
# one of the two compilations can be disabled. We should prefer
# $dir$base.o.d over $dir.libs/$base.o.d because the latter is
# automatically cleaned when .libs/ is deleted, while ignoring
# the former would cause a distcleancheck panic.
tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
tmpdepfile2=$dir$base.o.d # libtool 1.5
tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
"$@" -Wc,-MD
else
tmpdepfile1=$dir$base.o.d
tmpdepfile2=$dir$base.d
tmpdepfile3=$dir$base.d
tmpdepfile4=$dir$base.d
"$@" -MD
fi
stat=$?
if test $stat -eq 0; then :
else
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
do
test -f "$tmpdepfile" && break
done
if test -f "$tmpdepfile"; then
sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
# That's a tab and a space in the [].
sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
else
echo "#dummy" > "$depfile"
fi
rm -f "$tmpdepfile"
;;
#nosideeffect)
# This comment above is used by automake to tell side-effect
# dependency tracking mechanisms from slower ones.
dashmstdout)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout, regardless of -o.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test $1 != '--mode=compile'; do
shift
done
shift
fi
# Remove `-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
test -z "$dashmflag" && dashmflag=-M
# Require at least two characters before searching for `:'
# in the target name. This is to cope with DOS-style filenames:
# a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
"$@" $dashmflag |
sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
rm -f "$depfile"
cat < "$tmpdepfile" > "$depfile"
tr ' ' '
' < "$tmpdepfile" | \
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
dashXmstdout)
# This case only exists to satisfy depend.m4. It is never actually
# run, as this mode is specially recognized in the preamble.
exit 1
;;
makedepend)
"$@" || exit $?
# Remove any Libtool call
if test "$libtool" = yes; then
while test $1 != '--mode=compile'; do
shift
done
shift
fi
# X makedepend
shift
cleared=no
for arg in "$@"; do
case $cleared in
no)
set ""; shift
cleared=yes ;;
esac
case "$arg" in
-D*|-I*)
set fnord "$@" "$arg"; shift ;;
# Strip any option that makedepend may not understand. Remove
# the object too, otherwise makedepend will parse it as a source file.
-*|$object)
;;
*)
set fnord "$@" "$arg"; shift ;;
esac
done
obj_suffix="`echo $object | sed 's/^.*\././'`"
touch "$tmpdepfile"
${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
rm -f "$depfile"
cat < "$tmpdepfile" > "$depfile"
sed '1,2d' "$tmpdepfile" | tr ' ' '
' | \
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile" "$tmpdepfile".bak
;;
cpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test $1 != '--mode=compile'; do
shift
done
shift
fi
# Remove `-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
"$@" -E |
sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
-e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
sed '$ s: \\$::' > "$tmpdepfile"
rm -f "$depfile"
echo "$object : \\" > "$depfile"
cat < "$tmpdepfile" >> "$depfile"
sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
msvisualcpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout, regardless of -o,
# because we must use -o when running libtool.
"$@" || exit $?
IFS=" "
for arg
do
case "$arg" in
"-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
set fnord "$@"
shift
shift
;;
*)
set fnord "$@" "$arg"
shift
shift
;;
esac
done
"$@" -E |
sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
rm -f "$depfile"
echo "$object : \\" > "$depfile"
. "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
echo " " >> "$depfile"
. "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
rm -f "$tmpdepfile"
;;
none)
exec "$@"
;;
*)
echo "Unknown depmode $depmode" 1>&2
exit 1
;;
esac
exit 0
# Local Variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-end: "$"
# End:
libs/SDL2_image-2.0.0/gcc-fat.sh
-103
View File
@@ -1,103 +0,0 @@
#!/bin/sh
#
# Build Universal binaries on Mac OS X, thanks Ryan!
#
# Usage: ./configure CC="sh gcc-fat.sh" && make && rm -rf x86 x64
DEVELOPER="`xcode-select -print-path`/Platforms/MacOSX.platform/Developer"
# Intel 32-bit compiler flags (10.6 runtime compatibility)
GCC_COMPILE_X86="gcc -arch i386 -mmacosx-version-min=10.6 \
-DMAC_OS_X_VERSION_MIN_REQUIRED=1040 \
-I/usr/local/include"
GCC_LINK_X86="-mmacosx-version-min=10.6"
# Intel 64-bit compiler flags (10.6 runtime compatibility)
GCC_COMPILE_X64="gcc -arch x86_64 -mmacosx-version-min=10.6 \
-DMAC_OS_X_VERSION_MIN_REQUIRED=1050 \
-I/usr/local/include"
GCC_LINK_X64="-mmacosx-version-min=10.6"
# Output both PowerPC and Intel object files
args="$*"
compile=yes
link=yes
while test x$1 != x; do
case $1 in
--version) exec gcc $1;;
-v) exec gcc $1;;
-V) exec gcc $1;;
-print-prog-name=*) exec gcc $1;;
-print-search-dirs) exec gcc $1;;
-E) GCC_COMPILE_X86="$GCC_COMPILE_X86 -E"
GCC_COMPILE_X64="$GCC_COMPILE_X64 -E"
compile=no; link=no;;
-c) link=no;;
-o) output=$2;;
*.c|*.cc|*.cpp|*.S) source=$1;;
esac
shift
done
if test x$link = xyes; then
GCC_COMPILE_X86="$GCC_COMPILE_X86 $GCC_LINK_X86"
GCC_COMPILE_X64="$GCC_COMPILE_X64 $GCC_LINK_X64"
fi
if test x"$output" = x; then
if test x$link = xyes; then
output=a.out
elif test x$compile = xyes; then
output=`echo $source | sed -e 's|.*/||' -e 's|\(.*\)\.[^\.]*|\1|'`.o
fi
fi
# Compile X86 32-bit
if test x"$output" != x; then
dir=x86/`dirname $output`
if test -d $dir; then
:
else
mkdir -p $dir
fi
fi
set -- $args
while test x$1 != x; do
if test -f "x86/$1" && test "$1" != "$output"; then
x86_args="$x86_args x86/$1"
else
x86_args="$x86_args $1"
fi
shift
done
$GCC_COMPILE_X86 $x86_args || exit $?
if test x"$output" != x; then
cp $output x86/$output
fi
# Compile X86 32-bit
if test x"$output" != x; then
dir=x64/`dirname $output`
if test -d $dir; then
:
else
mkdir -p $dir
fi
fi
set -- $args
while test x$1 != x; do
if test -f "x64/$1" && test "$1" != "$output"; then
x64_args="$x64_args x64/$1"
else
x64_args="$x64_args $1"
fi
shift
done
$GCC_COMPILE_X64 $x64_args || exit $?
if test x"$output" != x; then
cp $output x64/$output
fi
if test x"$output" != x; then
lipo -create -o $output x86/$output x64/$output
fi
libs/SDL2_image-2.0.0/install-sh
-507
View File
@@ -1,507 +0,0 @@
#!/bin/sh
# install - install a program, script, or datafile
scriptversion=2006-10-14.15
# This originates from X11R5 (mit/util/scripts/install.sh), which was
# later released in X11R6 (xc/config/util/install.sh) with the
# following copyright and license.
#
# Copyright (C) 1994 X Consortium
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name of the X Consortium shall not
# be used in advertising or otherwise to promote the sale, use or other deal-
# ings in this Software without prior written authorization from the X Consor-
# tium.
#
#
# FSF changes to this file are in the public domain.
#
# Calling this script install-sh is preferred over install.sh, to prevent
# `make' implicit rules from creating a file called install from it
# when there is no Makefile.
#
# This script is compatible with the BSD install script, but was written
# from scratch.
nl='
'
IFS=" "" $nl"
# set DOITPROG to echo to test this script
# Don't use :- since 4.3BSD and earlier shells don't like it.
doit="${DOITPROG-}"
if test -z "$doit"; then
doit_exec=exec
else
doit_exec=$doit
fi
# Put in absolute file names if you don't have them in your path;
# or use environment vars.
mvprog="${MVPROG-mv}"
cpprog="${CPPROG-cp}"
chmodprog="${CHMODPROG-chmod}"
chownprog="${CHOWNPROG-chown}"
chgrpprog="${CHGRPPROG-chgrp}"
stripprog="${STRIPPROG-strip}"
rmprog="${RMPROG-rm}"
mkdirprog="${MKDIRPROG-mkdir}"
posix_glob=
posix_mkdir=
# Desired mode of installed file.
mode=0755
chmodcmd=$chmodprog
chowncmd=
chgrpcmd=
stripcmd=
rmcmd="$rmprog -f"
mvcmd="$mvprog"
src=
dst=
dir_arg=
dstarg=
no_target_directory=
usage="Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
or: $0 [OPTION]... SRCFILES... DIRECTORY
or: $0 [OPTION]... -t DIRECTORY SRCFILES...
or: $0 [OPTION]... -d DIRECTORIES...
In the 1st form, copy SRCFILE to DSTFILE.
In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
In the 4th, create DIRECTORIES.
Options:
-c (ignored)
-d create directories instead of installing files.
-g GROUP $chgrpprog installed files to GROUP.
-m MODE $chmodprog installed files to MODE.
-o USER $chownprog installed files to USER.
-s $stripprog installed files.
-t DIRECTORY install into DIRECTORY.
-T report an error if DSTFILE is a directory.
--help display this help and exit.
--version display version info and exit.
Environment variables override the default commands:
CHGRPPROG CHMODPROG CHOWNPROG CPPROG MKDIRPROG MVPROG RMPROG STRIPPROG
"
while test $# -ne 0; do
case $1 in
-c) shift
continue;;
-d) dir_arg=true
shift
continue;;
-g) chgrpcmd="$chgrpprog $2"
shift
shift
continue;;
--help) echo "$usage"; exit $?;;
-m) mode=$2
shift
shift
case $mode in
*' '* | *' '* | *'
'* | *'*'* | *'?'* | *'['*)
echo "$0: invalid mode: $mode" >&2
exit 1;;
esac
continue;;
-o) chowncmd="$chownprog $2"
shift
shift
continue;;
-s) stripcmd=$stripprog
shift
continue;;
-t) dstarg=$2
shift
shift
continue;;
-T) no_target_directory=true
shift
continue;;
--version) echo "$0 $scriptversion"; exit $?;;
--) shift
break;;
-*) echo "$0: invalid option: $1" >&2
exit 1;;
*) break;;
esac
done
if test $# -ne 0 && test -z "$dir_arg$dstarg"; then
# When -d is used, all remaining arguments are directories to create.
# When -t is used, the destination is already specified.
# Otherwise, the last argument is the destination. Remove it from $@.
for arg
do
if test -n "$dstarg"; then
# $@ is not empty: it contains at least $arg.
set fnord "$@" "$dstarg"
shift # fnord
fi
shift # arg
dstarg=$arg
done
fi
if test $# -eq 0; then
if test -z "$dir_arg"; then
echo "$0: no input file specified." >&2
exit 1
fi
# It's OK to call `install-sh -d' without argument.
# This can happen when creating conditional directories.
exit 0
fi
if test -z "$dir_arg"; then
trap '(exit $?); exit' 1 2 13 15
# Set umask so as not to create temps with too-generous modes.
# However, 'strip' requires both read and write access to temps.
case $mode in
# Optimize common cases.
*644) cp_umask=133;;
*755) cp_umask=22;;
*[0-7])
if test -z "$stripcmd"; then
u_plus_rw=
else
u_plus_rw='% 200'
fi
cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
*)
if test -z "$stripcmd"; then
u_plus_rw=
else
u_plus_rw=,u+rw
fi
cp_umask=$mode$u_plus_rw;;
esac
fi
for src
do
# Protect names starting with `-'.
case $src in
-*) src=./$src ;;
esac
if test -n "$dir_arg"; then
dst=$src
dstdir=$dst
test -d "$dstdir"
dstdir_status=$?
else
# Waiting for this to be detected by the "$cpprog $src $dsttmp" command
# might cause directories to be created, which would be especially bad
# if $src (and thus $dsttmp) contains '*'.
if test ! -f "$src" && test ! -d "$src"; then
echo "$0: $src does not exist." >&2
exit 1
fi
if test -z "$dstarg"; then
echo "$0: no destination specified." >&2
exit 1
fi
dst=$dstarg
# Protect names starting with `-'.
case $dst in
-*) dst=./$dst ;;
esac
# If destination is a directory, append the input filename; won't work
# if double slashes aren't ignored.
if test -d "$dst"; then
if test -n "$no_target_directory"; then
echo "$0: $dstarg: Is a directory" >&2
exit 1
fi
dstdir=$dst
dst=$dstdir/`basename "$src"`
dstdir_status=0
else
# Prefer dirname, but fall back on a substitute if dirname fails.
dstdir=`
(dirname "$dst") 2>/dev/null ||
expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
X"$dst" : 'X\(//\)[^/]' \| \
X"$dst" : 'X\(//\)$' \| \
X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
echo X"$dst" |
sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
s//\1/
q
}
/^X\(\/\/\)[^/].*/{
s//\1/
q
}
/^X\(\/\/\)$/{
s//\1/
q
}
/^X\(\/\).*/{
s//\1/
q
}
s/.*/./; q'
`
test -d "$dstdir"
dstdir_status=$?
fi
fi
obsolete_mkdir_used=false
if test $dstdir_status != 0; then
case $posix_mkdir in
'')
# Create intermediate dirs using mode 755 as modified by the umask.
# This is like FreeBSD 'install' as of 1997-10-28.
umask=`umask`
case $stripcmd.$umask in
# Optimize common cases.
*[2367][2367]) mkdir_umask=$umask;;
.*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
*[0-7])
mkdir_umask=`expr $umask + 22 \
- $umask % 100 % 40 + $umask % 20 \
- $umask % 10 % 4 + $umask % 2
`;;
*) mkdir_umask=$umask,go-w;;
esac
# With -d, create the new directory with the user-specified mode.
# Otherwise, rely on $mkdir_umask.
if test -n "$dir_arg"; then
mkdir_mode=-m$mode
else
mkdir_mode=
fi
posix_mkdir=false
case $umask in
*[123567][0-7][0-7])
# POSIX mkdir -p sets u+wx bits regardless of umask, which
# is incompatible with FreeBSD 'install' when (umask & 300) != 0.
;;
*)
tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
if (umask $mkdir_umask &&
exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
then
if test -z "$dir_arg" || {
# Check for POSIX incompatibilities with -m.
# HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
# other-writeable bit of parent directory when it shouldn't.
# FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
ls_ld_tmpdir=`ls -ld "$tmpdir"`
case $ls_ld_tmpdir in
d????-?r-*) different_mode=700;;
d????-?--*) different_mode=755;;
*) false;;
esac &&
$mkdirprog -m$different_mode -p -- "$tmpdir" && {
ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
}
}
then posix_mkdir=:
fi
rmdir "$tmpdir/d" "$tmpdir"
else
# Remove any dirs left behind by ancient mkdir implementations.
rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
fi
trap '' 0;;
esac;;
esac
if
$posix_mkdir && (
umask $mkdir_umask &&
$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
)
then :
else
# The umask is ridiculous, or mkdir does not conform to POSIX,
# or it failed possibly due to a race condition. Create the
# directory the slow way, step by step, checking for races as we go.
case $dstdir in
/*) prefix=/ ;;
-*) prefix=./ ;;
*) prefix= ;;
esac
case $posix_glob in
'')
if (set -f) 2>/dev/null; then
posix_glob=true
else
posix_glob=false
fi ;;
esac
oIFS=$IFS
IFS=/
$posix_glob && set -f
set fnord $dstdir
shift
$posix_glob && set +f
IFS=$oIFS
prefixes=
for d
do
test -z "$d" && continue
prefix=$prefix$d
if test -d "$prefix"; then
prefixes=
else
if $posix_mkdir; then
(umask=$mkdir_umask &&
$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
# Don't fail if two instances are running concurrently.
test -d "$prefix" || exit 1
else
case $prefix in
*\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
*) qprefix=$prefix;;
esac
prefixes="$prefixes '$qprefix'"
fi
fi
prefix=$prefix/
done
if test -n "$prefixes"; then
# Don't fail if two instances are running concurrently.
(umask $mkdir_umask &&
eval "\$doit_exec \$mkdirprog $prefixes") ||
test -d "$dstdir" || exit 1
obsolete_mkdir_used=true
fi
fi
fi
if test -n "$dir_arg"; then
{ test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
{ test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
{ test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
else
# Make a couple of temp file names in the proper directory.
dsttmp=$dstdir/_inst.$$_
rmtmp=$dstdir/_rm.$$_
# Trap to clean up those temp files at exit.
trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
# Copy the file name to the temp name.
(umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
# and set any options; do chmod last to preserve setuid bits.
#
# If any of these fail, we abort the whole thing. If we want to
# ignore errors from any of these, just make sure not to ignore
# errors from the above "$doit $cpprog $src $dsttmp" command.
#
{ test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } \
&& { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } \
&& { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } \
&& { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
# Now rename the file to the real destination.
{ $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null \
|| {
# The rename failed, perhaps because mv can't rename something else
# to itself, or perhaps because mv is so ancient that it does not
# support -f.
# Now remove or move aside any old file at destination location.
# We try this two ways since rm can't unlink itself on some
# systems and the destination file might be busy for other
# reasons. In this case, the final cleanup might fail but the new
# file should still install successfully.
{
if test -f "$dst"; then
$doit $rmcmd -f "$dst" 2>/dev/null \
|| { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null \
&& { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }; }\
|| {
echo "$0: cannot unlink or rename $dst" >&2
(exit 1); exit 1
}
else
:
fi
} &&
# Now rename the file to the real destination.
$doit $mvcmd "$dsttmp" "$dst"
}
} || exit 1
trap '' 0
fi
done
# Local variables:
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-end: "$"
# End:
libs/SDL2_image-2.0.0/ltmain.sh
-8407
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libs/SDL2_image-2.0.0/miniz.h
-4771
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File diff suppressed because it is too large Load Diff
libs/SDL2_image-2.0.0/missing
-215
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@@ -1,215 +0,0 @@
#! /bin/sh
# Common wrapper for a few potentially missing GNU programs.
scriptversion=2012-06-26.16; # UTC
# Copyright (C) 1996-2013 Free Software Foundation, Inc.
# Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
if test $# -eq 0; then
echo 1>&2 "Try '$0 --help' for more information"
exit 1
fi
case $1 in
--is-lightweight)
# Used by our autoconf macros to check whether the available missing
# script is modern enough.
exit 0
;;
--run)
# Back-compat with the calling convention used by older automake.
shift
;;
-h|--h|--he|--hel|--help)
echo "\
$0 [OPTION]... PROGRAM [ARGUMENT]...
Run 'PROGRAM [ARGUMENT]...', returning a proper advice when this fails due
to PROGRAM being missing or too old.
Options:
-h, --help display this help and exit
-v, --version output version information and exit
Supported PROGRAM values:
aclocal autoconf autoheader autom4te automake makeinfo
bison yacc flex lex help2man
Version suffixes to PROGRAM as well as the prefixes 'gnu-', 'gnu', and
'g' are ignored when checking the name.
Send bug reports to <bug-automake@gnu.org>."
exit $?
;;
-v|--v|--ve|--ver|--vers|--versi|--versio|--version)
echo "missing $scriptversion (GNU Automake)"
exit $?
;;
-*)
echo 1>&2 "$0: unknown '$1' option"
echo 1>&2 "Try '$0 --help' for more information"
exit 1
;;
esac
# Run the given program, remember its exit status.
"$@"; st=$?
# If it succeeded, we are done.
test $st -eq 0 && exit 0
# Also exit now if we it failed (or wasn't found), and '--version' was
# passed; such an option is passed most likely to detect whether the
# program is present and works.
case $2 in --version|--help) exit $st;; esac
# Exit code 63 means version mismatch. This often happens when the user
# tries to use an ancient version of a tool on a file that requires a
# minimum version.
if test $st -eq 63; then
msg="probably too old"
elif test $st -eq 127; then
# Program was missing.
msg="missing on your system"
else
# Program was found and executed, but failed. Give up.
exit $st
fi
perl_URL=http://www.perl.org/
flex_URL=http://flex.sourceforge.net/
gnu_software_URL=http://www.gnu.org/software
program_details ()
{
case $1 in
aclocal|automake)
echo "The '$1' program is part of the GNU Automake package:"
echo "<$gnu_software_URL/automake>"
echo "It also requires GNU Autoconf, GNU m4 and Perl in order to run:"
echo "<$gnu_software_URL/autoconf>"
echo "<$gnu_software_URL/m4/>"
echo "<$perl_URL>"
;;
autoconf|autom4te|autoheader)
echo "The '$1' program is part of the GNU Autoconf package:"
echo "<$gnu_software_URL/autoconf/>"
echo "It also requires GNU m4 and Perl in order to run:"
echo "<$gnu_software_URL/m4/>"
echo "<$perl_URL>"
;;
esac
}
give_advice ()
{
# Normalize program name to check for.
normalized_program=`echo "$1" | sed '
s/^gnu-//; t
s/^gnu//; t
s/^g//; t'`
printf '%s\n' "'$1' is $msg."
configure_deps="'configure.ac' or m4 files included by 'configure.ac'"
case $normalized_program in
autoconf*)
echo "You should only need it if you modified 'configure.ac',"
echo "or m4 files included by it."
program_details 'autoconf'
;;
autoheader*)
echo "You should only need it if you modified 'acconfig.h' or"
echo "$configure_deps."
program_details 'autoheader'
;;
automake*)
echo "You should only need it if you modified 'Makefile.am' or"
echo "$configure_deps."
program_details 'automake'
;;
aclocal*)
echo "You should only need it if you modified 'acinclude.m4' or"
echo "$configure_deps."
program_details 'aclocal'
;;
autom4te*)
echo "You might have modified some maintainer files that require"
echo "the 'automa4te' program to be rebuilt."
program_details 'autom4te'
;;
bison*|yacc*)
echo "You should only need it if you modified a '.y' file."
echo "You may want to install the GNU Bison package:"
echo "<$gnu_software_URL/bison/>"
;;
lex*|flex*)
echo "You should only need it if you modified a '.l' file."
echo "You may want to install the Fast Lexical Analyzer package:"
echo "<$flex_URL>"
;;
help2man*)
echo "You should only need it if you modified a dependency" \
"of a man page."
echo "You may want to install the GNU Help2man package:"
echo "<$gnu_software_URL/help2man/>"
;;
makeinfo*)
echo "You should only need it if you modified a '.texi' file, or"
echo "any other file indirectly affecting the aspect of the manual."
echo "You might want to install the Texinfo package:"
echo "<$gnu_software_URL/texinfo/>"
echo "The spurious makeinfo call might also be the consequence of"
echo "using a buggy 'make' (AIX, DU, IRIX), in which case you might"
echo "want to install GNU make:"
echo "<$gnu_software_URL/make/>"
;;
*)
echo "You might have modified some files without having the proper"
echo "tools for further handling them. Check the 'README' file, it"
echo "often tells you about the needed prerequisites for installing"
echo "this package. You may also peek at any GNU archive site, in"
echo "case some other package contains this missing '$1' program."
;;
esac
}
give_advice "$1" | sed -e '1s/^/WARNING: /' \
-e '2,$s/^/ /' >&2
# Propagate the correct exit status (expected to be 127 for a program
# not found, 63 for a program that failed due to version mismatch).
exit $st
# Local variables:
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC"
# time-stamp-end: "; # UTC"
# End:
libs/SDL2_image-2.0.0/showimage.c
-175
View File
@@ -1,175 +0,0 @@
/*
showimage: A test application for the SDL image loading library.
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "SDL.h"
#include "SDL_image.h"
/* Draw a Gimpish background pattern to show transparency in the image */
static void draw_background(SDL_Renderer *renderer, int w, int h)
{
SDL_Color col[2] = {
{ 0x66, 0x66, 0x66, 0xff },
{ 0x99, 0x99, 0x99, 0xff },
};
int i, x, y;
SDL_Rect rect;
rect.w = 8;
rect.h = 8;
for (y = 0; y < h; y += rect.h) {
for (x = 0; x < w; x += rect.w) {
/* use an 8x8 checkerboard pattern */
i = (((x ^ y) >> 3) & 1);
SDL_SetRenderDrawColor(renderer, col[i].r, col[i].g, col[i].b, col[i].a);
rect.x = x;
rect.y = y;
SDL_RenderFillRect(renderer, &rect);
}
}
}
int main(int argc, char *argv[])
{
SDL_Window *window;
SDL_Renderer *renderer;
SDL_Texture *texture;
Uint32 flags;
int i, w, h, done;
SDL_Event event;
const char *saveFile = NULL;
/* Check command line usage */
if ( ! argv[1] ) {
fprintf(stderr, "Usage: %s [-fullscreen] [-save file.png] <image_file> ...\n", argv[0]);
return(1);
}
flags = SDL_WINDOW_HIDDEN;
for ( i=1; argv[i]; ++i ) {
if ( strcmp(argv[i], "-fullscreen") == 0 ) {
SDL_ShowCursor(0);
flags |= SDL_WINDOW_FULLSCREEN;
}
}
if (SDL_CreateWindowAndRenderer(0, 0, flags, &window, &renderer) < 0) {
fprintf(stderr, "SDL_CreateWindowAndRenderer() failed: %s\n", SDL_GetError());
return(2);
}
for ( i=1; argv[i]; ++i ) {
if ( strcmp(argv[i], "-fullscreen") == 0 ) {
continue;
}
if ( strcmp(argv[i], "-save") == 0 && argv[i+1] ) {
++i;
saveFile = argv[i];
continue;
}
/* Open the image file */
texture = IMG_LoadTexture(renderer, argv[i]);
if (!texture) {
fprintf(stderr, "Couldn't load %s: %s\n", argv[i], SDL_GetError());
continue;
}
SDL_QueryTexture(texture, NULL, NULL, &w, &h);
/* Save the image file, if desired */
if ( saveFile ) {
SDL_Surface *surface = IMG_Load(argv[i]);
if (surface) {
if ( IMG_SavePNG(surface, saveFile) < 0 ) {
fprintf(stderr, "Couldn't save %s: %s\n", saveFile, SDL_GetError());
}
} else {
fprintf(stderr, "Couldn't load %s: %s\n", argv[i], SDL_GetError());
}
}
/* Show the window */
SDL_SetWindowTitle(window, argv[i]);
SDL_SetWindowSize(window, w, h);
SDL_ShowWindow(window);
done = 0;
while ( ! done ) {
while ( SDL_PollEvent(&event) ) {
switch (event.type) {
case SDL_KEYUP:
switch (event.key.keysym.sym) {
case SDLK_LEFT:
if ( i > 1 ) {
i -= 2;
done = 1;
}
break;
case SDLK_RIGHT:
if ( argv[i+1] ) {
done = 1;
}
break;
case SDLK_ESCAPE:
case SDLK_q:
argv[i+1] = NULL;
/* Drop through to done */
case SDLK_SPACE:
case SDLK_TAB:
done = 1;
break;
default:
break;
}
break;
case SDL_MOUSEBUTTONDOWN:
done = 1;
break;
case SDL_QUIT:
argv[i+1] = NULL;
done = 1;
break;
default:
break;
}
}
/* Draw a background pattern in case the image has transparency */
draw_background(renderer, w, h);
/* Display the image */
SDL_RenderCopy(renderer, texture, NULL, NULL);
SDL_RenderPresent(renderer);
SDL_Delay(100);
}
SDL_DestroyTexture(texture);
}
/* We're done! */
SDL_Quit();
return(0);
}
libs/SDL2_image-2.0.0/version.rc
-38
View File
@@ -1,38 +0,0 @@
#include "winresrc.h"
LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
/////////////////////////////////////////////////////////////////////////////
//
// Version
//
VS_VERSION_INFO VERSIONINFO
FILEVERSION 2,0,0,0
PRODUCTVERSION 2,0,0,0
FILEFLAGSMASK 0x3fL
FILEFLAGS 0x0L
FILEOS 0x40004L
FILETYPE 0x2L
FILESUBTYPE 0x0L
BEGIN
BLOCK "StringFileInfo"
BEGIN
BLOCK "040904b0"
BEGIN
VALUE "CompanyName", "\0"
VALUE "FileDescription", "SDL_image\0"
VALUE "FileVersion", "2, 0, 0, 0\0"
VALUE "InternalName", "SDL_image\0"
VALUE "LegalCopyright", "Copyright © 2013 Sam Lantinga\0"
VALUE "OriginalFilename", "SDL_image.dll\0"
VALUE "ProductName", "Simple DirectMedia Layer\0"
VALUE "ProductVersion", "2, 0, 0, 0\0"
END
END
BLOCK "VarFileInfo"
BEGIN
VALUE "Translation", 0x409, 1200
END
END
libs/jpeg-9/CMakeLists.txt
-77
View File
@@ -1,77 +0,0 @@
cmake_minimum_required(VERSION 2.8)
project(jpeg)
include(CheckIncludeFiles)
option(JPEG_BUILD_SHARED "Build shared library" OFF)
option(JPEG_BUILD_STATIC "Build static library" ON)
set(JPEG_SRC
jaricom.c
jcapimin.c
jcapistd.c
jcarith.c
jccoefct.c
jccolor.c
jcdctmgr.c
jchuff.c
jcinit.c
jcmainct.c
jcmarker.c
jcmaster.c
jcomapi.c
jcparam.c
jcprepct.c
jcsample.c
jctrans.c
jdapimin.c
jdapistd.c
jdarith.c
jdatadst.c
jdatasrc.c
jdcoefct.c
jdcolor.c
jddctmgr.c
jdhuff.c
jdinput.c
jdmainct.c
jdmarker.c
jdmaster.c
jdmerge.c
jdpostct.c
jdsample.c
jdtrans.c
jerror.c
jfdctflt.c
jfdctfst.c
jfdctint.c
jidctflt.c
jidctfst.c
jidctint.c
jquant1.c
jquant2.c
jutils.c
jmemmgr.c
jmemansi.c
)
if(MSVC)
file(COPY jconfig.vc DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
file(RENAME ${CMAKE_CURRENT_BINARY_DIR}/jconfig.vc ${CMAKE_CURRENT_BINARY_DIR}/jconfig.h)
elseif(APPLE)
check_include_files("stddef.h" HAVE_STDDEF_H)
check_include_files("stdlib.h" HAVE_STDLIB_H)
check_include_files("locale.h" HAVE_LOCALE_H)
configure_file(jconfig.cmake jconfig.h)
endif()
if(JPEG_BUILD_STATIC)
add_library(jpeg-static STATIC ${JPEG_SRC})
target_include_directories(jpeg-static PUBLIC . ${CMAKE_CURRENT_BINARY_DIR})
endif()
if(JPEG_BUILD_SHARED)
add_library(jpeg SHARED ${JPEG_SRC})
target_include_directories(jpeg PUBLIC . ${CMAKE_CURRENT_BINARY_DIR})
endif()
libs/jpeg-9/Makefile.am
-134
View File
@@ -1,134 +0,0 @@
## Process this file with automake to produce Makefile.in
#
# Automake Makefile for the JPEG library
#
# This file is written by Bob Friesenhahn, Guido Vollbeding
#
# Sources to build library
LIBSOURCES = jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \
jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \
jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \
jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \
jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \
jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \
jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \
jquant2.c jutils.c jmemmgr.c @MEMORYMGR@.c
# System dependent sources
SYSDEPSOURCES = jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c
# Headers which are installed to support the library
INSTINCLUDES = jerror.h jmorecfg.h jpeglib.h
# Headers which are not installed
OTHERINCLUDES = cderror.h cdjpeg.h jdct.h jinclude.h jmemsys.h jpegint.h \
jversion.h transupp.h
# Manual pages (Automake uses 'MANS' for itself)
DISTMANS= cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1
# Other documentation files
DOCS= README install.txt usage.txt wizard.txt example.c libjpeg.txt \
structure.txt coderules.txt filelist.txt change.log
# Makefiles for various systems
MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
makefile.mms makefile.vms makvms.opt
# Configuration files
CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
jconfig.vms
# Support scripts for configure
CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
missing ar-lib
# Miscellaneous support files
OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
# Test support files
TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
testimgp.jpg
# libtool libraries to build
lib_LTLIBRARIES = libjpeg.la
# Library sources for libjpeg.la
libjpeg_la_SOURCES = $(LIBSOURCES)
# LDFLAGS for libjpeg.la
libjpeg_la_LDFLAGS = -no-undefined \
-version-info $(JPEG_LIB_VERSION)
if HAVE_LD_VERSION_SCRIPT
libjpeg_la_LDFLAGS += -Wl,--version-script=$(srcdir)/libjpeg.map
endif
# Executables to build
bin_PROGRAMS = cjpeg djpeg jpegtran rdjpgcom wrjpgcom
# Executable sources & libs
cjpeg_SOURCES = cjpeg.c rdppm.c rdgif.c rdtarga.c rdrle.c rdbmp.c \
rdswitch.c cdjpeg.c
cjpeg_LDADD = libjpeg.la
djpeg_SOURCES = djpeg.c wrppm.c wrgif.c wrtarga.c wrrle.c wrbmp.c \
rdcolmap.c cdjpeg.c
djpeg_LDADD = libjpeg.la
jpegtran_SOURCES = jpegtran.c rdswitch.c cdjpeg.c transupp.c
jpegtran_LDADD = libjpeg.la
rdjpgcom_SOURCES = rdjpgcom.c
wrjpgcom_SOURCES = wrjpgcom.c
# Manual pages to install
man_MANS = $(DISTMANS)
# Headers to install
include_HEADERS = $(INSTINCLUDES)
# Other distributed headers
noinst_HEADERS = $(OTHERINCLUDES)
# Other distributed files
EXTRA_DIST = $(DOCS) $(DISTMANS) $(MKFILES) $(CONFIGFILES) $(SYSDEPSOURCES) \
$(OTHERFILES) $(TESTFILES)
# Files to be cleaned
CLEANFILES = testout.ppm testout.bmp testout.jpg testoutp.ppm testoutp.jpg \
testoutt.jpg
# Install jconfig.h
install-data-local:
$(mkinstalldirs) $(DESTDIR)$(includedir)
$(INSTALL_HEADER) jconfig.h $(DESTDIR)$(includedir)/jconfig.h
# Uninstall jconfig.h
uninstall-local:
rm -f $(DESTDIR)$(includedir)/jconfig.h
# Run tests
test: check-local
check-local:
rm -f testout*
./djpeg -dct int -ppm -outfile testout.ppm $(srcdir)/testorig.jpg
./djpeg -dct int -bmp -colors 256 -outfile testout.bmp $(srcdir)/testorig.jpg
./cjpeg -dct int -outfile testout.jpg $(srcdir)/testimg.ppm
./djpeg -dct int -ppm -outfile testoutp.ppm $(srcdir)/testprog.jpg
./cjpeg -dct int -progressive -opt -outfile testoutp.jpg $(srcdir)/testimg.ppm
./jpegtran -outfile testoutt.jpg $(srcdir)/testprog.jpg
cmp $(srcdir)/testimg.ppm testout.ppm
cmp $(srcdir)/testimg.bmp testout.bmp
cmp $(srcdir)/testimg.jpg testout.jpg
cmp $(srcdir)/testimg.ppm testoutp.ppm
cmp $(srcdir)/testimgp.jpg testoutp.jpg
cmp $(srcdir)/testorig.jpg testoutt.jpg
libs/jpeg-9/Makefile.in
-995
View File
@@ -1,995 +0,0 @@
# Makefile.in generated by automake 1.13.1 from Makefile.am.
# @configure_input@
# Copyright (C) 1994-2012 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
#
# Automake Makefile for the JPEG library
#
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#
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ACLOCAL = @ACLOCAL@
AMTAR = @AMTAR@
AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
AR = @AR@
AS = @AS@
AUTOCONF = @AUTOCONF@
AUTOHEADER = @AUTOHEADER@
AUTOMAKE = @AUTOMAKE@
AWK = @AWK@
CC = @CC@
CCDEPMODE = @CCDEPMODE@
CFLAGS = @CFLAGS@
CPP = @CPP@
CPPFLAGS = @CPPFLAGS@
CYGPATH_W = @CYGPATH_W@
DEFS = @DEFS@
DEPDIR = @DEPDIR@
DLLTOOL = @DLLTOOL@
DSYMUTIL = @DSYMUTIL@
DUMPBIN = @DUMPBIN@
ECHO_C = @ECHO_C@
ECHO_N = @ECHO_N@
ECHO_T = @ECHO_T@
EGREP = @EGREP@
EXEEXT = @EXEEXT@
FGREP = @FGREP@
GREP = @GREP@
INSTALL = @INSTALL@
INSTALL_DATA = @INSTALL_DATA@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_SCRIPT = @INSTALL_SCRIPT@
INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
JPEG_LIB_VERSION = @JPEG_LIB_VERSION@
LD = @LD@
LDFLAGS = @LDFLAGS@
LIBOBJS = @LIBOBJS@
LIBS = @LIBS@
LIBTOOL = @LIBTOOL@
LIPO = @LIPO@
LN_S = @LN_S@
LTLIBOBJS = @LTLIBOBJS@
MAINT = @MAINT@
MAKEINFO = @MAKEINFO@
MANIFEST_TOOL = @MANIFEST_TOOL@
MEMORYMGR = @MEMORYMGR@
MKDIR_P = @MKDIR_P@
NM = @NM@
NMEDIT = @NMEDIT@
OBJDUMP = @OBJDUMP@
OBJEXT = @OBJEXT@
OTOOL = @OTOOL@
OTOOL64 = @OTOOL64@
PACKAGE = @PACKAGE@
PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
PACKAGE_NAME = @PACKAGE_NAME@
PACKAGE_STRING = @PACKAGE_STRING@
PACKAGE_TARNAME = @PACKAGE_TARNAME@
PACKAGE_URL = @PACKAGE_URL@
PACKAGE_VERSION = @PACKAGE_VERSION@
PATH_SEPARATOR = @PATH_SEPARATOR@
RANLIB = @RANLIB@
SED = @SED@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@
STRIP = @STRIP@
VERSION = @VERSION@
abs_builddir = @abs_builddir@
abs_srcdir = @abs_srcdir@
abs_top_builddir = @abs_top_builddir@
abs_top_srcdir = @abs_top_srcdir@
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build_alias = @build_alias@
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build_vendor = @build_vendor@
builddir = @builddir@
datadir = @datadir@
datarootdir = @datarootdir@
docdir = @docdir@
dvidir = @dvidir@
exec_prefix = @exec_prefix@
host = @host@
host_alias = @host_alias@
host_cpu = @host_cpu@
host_os = @host_os@
host_vendor = @host_vendor@
htmldir = @htmldir@
includedir = @includedir@
infodir = @infodir@
install_sh = @install_sh@
libdir = @libdir@
libexecdir = @libexecdir@
localedir = @localedir@
localstatedir = @localstatedir@
mandir = @mandir@
mkdir_p = @mkdir_p@
oldincludedir = @oldincludedir@
pdfdir = @pdfdir@
prefix = @prefix@
program_transform_name = @program_transform_name@
psdir = @psdir@
sbindir = @sbindir@
sharedstatedir = @sharedstatedir@
srcdir = @srcdir@
sysconfdir = @sysconfdir@
target = @target@
target_alias = @target_alias@
target_cpu = @target_cpu@
target_os = @target_os@
target_vendor = @target_vendor@
top_build_prefix = @top_build_prefix@
top_builddir = @top_builddir@
top_srcdir = @top_srcdir@
# Sources to build library
LIBSOURCES = jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \
jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \
jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \
jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \
jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \
jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \
jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \
jquant2.c jutils.c jmemmgr.c @MEMORYMGR@.c
# System dependent sources
SYSDEPSOURCES = jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c
# Headers which are installed to support the library
INSTINCLUDES = jerror.h jmorecfg.h jpeglib.h
# Headers which are not installed
OTHERINCLUDES = cderror.h cdjpeg.h jdct.h jinclude.h jmemsys.h jpegint.h \
jversion.h transupp.h
# Manual pages (Automake uses 'MANS' for itself)
DISTMANS = cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1
# Other documentation files
DOCS = README install.txt usage.txt wizard.txt example.c libjpeg.txt \
structure.txt coderules.txt filelist.txt change.log
# Makefiles for various systems
MKFILES = configure Makefile.in makefile.ansi makefile.unix makefile.bcc \
makefile.mc6 makefile.dj makefile.wat makefile.vc makejdsw.vc6 \
makeadsw.vc6 makejdep.vc6 makejdsp.vc6 makejmak.vc6 makecdep.vc6 \
makecdsp.vc6 makecmak.vc6 makeddep.vc6 makeddsp.vc6 makedmak.vc6 \
maketdep.vc6 maketdsp.vc6 maketmak.vc6 makerdep.vc6 makerdsp.vc6 \
makermak.vc6 makewdep.vc6 makewdsp.vc6 makewmak.vc6 makejsln.v10 \
makeasln.v10 makejvcx.v10 makejfil.v10 makecvcx.v10 makecfil.v10 \
makedvcx.v10 makedfil.v10 maketvcx.v10 maketfil.v10 makervcx.v10 \
makerfil.v10 makewvcx.v10 makewfil.v10 makeproj.mac makcjpeg.st \
makdjpeg.st makljpeg.st maktjpeg.st makefile.manx makefile.sas \
makefile.mms makefile.vms makvms.opt
# Configuration files
CONFIGFILES = jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
jconfig.vms
# Support scripts for configure
CONFIGUREFILES = config.guess config.sub install-sh ltmain.sh depcomp \
missing ar-lib
# Miscellaneous support files
OTHERFILES = jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map
# Test support files
TESTFILES = testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
testimgp.jpg
# libtool libraries to build
lib_LTLIBRARIES = libjpeg.la
# Library sources for libjpeg.la
libjpeg_la_SOURCES = $(LIBSOURCES)
# LDFLAGS for libjpeg.la
libjpeg_la_LDFLAGS = -no-undefined -version-info $(JPEG_LIB_VERSION) \
$(am__append_1)
# Executable sources & libs
cjpeg_SOURCES = cjpeg.c rdppm.c rdgif.c rdtarga.c rdrle.c rdbmp.c \
rdswitch.c cdjpeg.c
cjpeg_LDADD = libjpeg.la
djpeg_SOURCES = djpeg.c wrppm.c wrgif.c wrtarga.c wrrle.c wrbmp.c \
rdcolmap.c cdjpeg.c
djpeg_LDADD = libjpeg.la
jpegtran_SOURCES = jpegtran.c rdswitch.c cdjpeg.c transupp.c
jpegtran_LDADD = libjpeg.la
rdjpgcom_SOURCES = rdjpgcom.c
wrjpgcom_SOURCES = wrjpgcom.c
# Manual pages to install
man_MANS = $(DISTMANS)
# Headers to install
include_HEADERS = $(INSTINCLUDES)
# Other distributed headers
noinst_HEADERS = $(OTHERINCLUDES)
# Other distributed files
EXTRA_DIST = $(DOCS) $(DISTMANS) $(MKFILES) $(CONFIGFILES) $(SYSDEPSOURCES) \
$(OTHERFILES) $(TESTFILES)
# Files to be cleaned
CLEANFILES = testout.ppm testout.bmp testout.jpg testoutp.ppm testoutp.jpg \
testoutt.jpg
all: jconfig.h
$(MAKE) $(AM_MAKEFLAGS) all-am
.SUFFIXES:
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am--refresh: Makefile
@:
$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(am__configure_deps)
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echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign Makefile'; \
$(am__cd) $(top_srcdir) && \
$(AUTOMAKE) --foreign Makefile
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Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
@case '$?' in \
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echo ' $(SHELL) ./config.status'; \
$(SHELL) ./config.status;; \
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$(SHELL) ./config.status --recheck
$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
$(am__cd) $(srcdir) && $(AUTOCONF)
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install-libLTLIBRARIES: $(lib_LTLIBRARIES)
@$(NORMAL_INSTALL)
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list2=; for p in $$list; do \
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test -z "$$list2" || { \
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clean-libLTLIBRARIES:
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@list='$(lib_LTLIBRARIES)'; \
locs=`for p in $$list; do echo $$p; done | \
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libjpeg.la: $(libjpeg_la_OBJECTS) $(libjpeg_la_DEPENDENCIES) $(EXTRA_libjpeg_la_DEPENDENCIES)
$(AM_V_CCLD)$(libjpeg_la_LINK) -rpath $(libdir) $(libjpeg_la_OBJECTS) $(libjpeg_la_LIBADD) $(LIBS)
install-binPROGRAMS: $(bin_PROGRAMS)
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@list='$(bin_PROGRAMS)'; test -n "$(bindir)" || list=; \
if test -n "$$list"; then \
echo " $(MKDIR_P) '$(DESTDIR)$(bindir)'"; \
$(MKDIR_P) "$(DESTDIR)$(bindir)" || exit 1; \
fi; \
for p in $$list; do echo "$$p $$p"; done | \
sed 's/$(EXEEXT)$$//' | \
while read p p1; do if test -f $$p \
|| test -f $$p1 \
; then echo "$$p"; echo "$$p"; else :; fi; \
done | \
sed -e 'p;s,.*/,,;n;h' \
-e 's|.*|.|' \
-e 'p;x;s,.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/' | \
sed 'N;N;N;s,\n, ,g' | \
$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1 } \
{ d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
if ($$2 == $$4) files[d] = files[d] " " $$1; \
else { print "f", $$3 "/" $$4, $$1; } } \
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while read type dir files; do \
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uninstall-binPROGRAMS:
@$(NORMAL_UNINSTALL)
@list='$(bin_PROGRAMS)'; test -n "$(bindir)" || list=; \
files=`for p in $$list; do echo "$$p"; done | \
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test -n "$$list" || exit 0; \
echo " ( cd '$(DESTDIR)$(bindir)' && rm -f" $$files ")"; \
cd "$(DESTDIR)$(bindir)" && rm -f $$files
clean-binPROGRAMS:
@list='$(bin_PROGRAMS)'; test -n "$$list" || exit 0; \
echo " rm -f" $$list; \
rm -f $$list || exit $$?; \
test -n "$(EXEEXT)" || exit 0; \
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$(AM_V_CCLD)$(LINK) $(wrjpgcom_OBJECTS) $(wrjpgcom_LDADD) $(LIBS)
mostlyclean-compile:
-rm -f *.$(OBJEXT)
distclean-compile:
-rm -f *.tab.c
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/@MEMORYMGR@.Plo@am__quote@
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./djpeg -dct int -ppm -outfile testoutp.ppm $(srcdir)/testprog.jpg
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cmp $(srcdir)/testimg.ppm testout.ppm
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cmp $(srcdir)/testimg.ppm testoutp.ppm
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libs/jpeg-9/README
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The Independent JPEG Group's JPEG software
==========================================
README for release 9 of 13-Jan-2013
===================================
This distribution contains the ninth public release of the Independent JPEG
Group's free JPEG software. You are welcome to redistribute this software and
to use it for any purpose, subject to the conditions under LEGAL ISSUES, below.
This software is the work of Tom Lane, Guido Vollbeding, Philip Gladstone,
Bill Allombert, Jim Boucher, Lee Crocker, Bob Friesenhahn, Ben Jackson,
Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi, Ge' Weijers,
and other members of the Independent JPEG Group.
IJG is not affiliated with the ISO/IEC JTC1/SC29/WG1 standards committee
(also known as JPEG, together with ITU-T SG16).
DOCUMENTATION ROADMAP
=====================
This file contains the following sections:
OVERVIEW General description of JPEG and the IJG software.
LEGAL ISSUES Copyright, lack of warranty, terms of distribution.
REFERENCES Where to learn more about JPEG.
ARCHIVE LOCATIONS Where to find newer versions of this software.
ACKNOWLEDGMENTS Special thanks.
FILE FORMAT WARS Software *not* to get.
TO DO Plans for future IJG releases.
Other documentation files in the distribution are:
User documentation:
install.txt How to configure and install the IJG software.
usage.txt Usage instructions for cjpeg, djpeg, jpegtran,
rdjpgcom, and wrjpgcom.
*.1 Unix-style man pages for programs (same info as usage.txt).
wizard.txt Advanced usage instructions for JPEG wizards only.
change.log Version-to-version change highlights.
Programmer and internal documentation:
libjpeg.txt How to use the JPEG library in your own programs.
example.c Sample code for calling the JPEG library.
structure.txt Overview of the JPEG library's internal structure.
filelist.txt Road map of IJG files.
coderules.txt Coding style rules --- please read if you contribute code.
Please read at least the files install.txt and usage.txt. Some information
can also be found in the JPEG FAQ (Frequently Asked Questions) article. See
ARCHIVE LOCATIONS below to find out where to obtain the FAQ article.
If you want to understand how the JPEG code works, we suggest reading one or
more of the REFERENCES, then looking at the documentation files (in roughly
the order listed) before diving into the code.
OVERVIEW
========
This package contains C software to implement JPEG image encoding, decoding,
and transcoding. JPEG (pronounced "jay-peg") is a standardized compression
method for full-color and gray-scale images.
This software implements JPEG baseline, extended-sequential, and progressive
compression processes. Provision is made for supporting all variants of these
processes, although some uncommon parameter settings aren't implemented yet.
We have made no provision for supporting the hierarchical or lossless
processes defined in the standard.
We provide a set of library routines for reading and writing JPEG image files,
plus two sample applications "cjpeg" and "djpeg", which use the library to
perform conversion between JPEG and some other popular image file formats.
The library is intended to be reused in other applications.
In order to support file conversion and viewing software, we have included
considerable functionality beyond the bare JPEG coding/decoding capability;
for example, the color quantization modules are not strictly part of JPEG
decoding, but they are essential for output to colormapped file formats or
colormapped displays. These extra functions can be compiled out of the
library if not required for a particular application.
We have also included "jpegtran", a utility for lossless transcoding between
different JPEG processes, and "rdjpgcom" and "wrjpgcom", two simple
applications for inserting and extracting textual comments in JFIF files.
The emphasis in designing this software has been on achieving portability and
flexibility, while also making it fast enough to be useful. In particular,
the software is not intended to be read as a tutorial on JPEG. (See the
REFERENCES section for introductory material.) Rather, it is intended to
be reliable, portable, industrial-strength code. We do not claim to have
achieved that goal in every aspect of the software, but we strive for it.
We welcome the use of this software as a component of commercial products.
No royalty is required, but we do ask for an acknowledgement in product
documentation, as described under LEGAL ISSUES.
LEGAL ISSUES
============
In plain English:
1. We don't promise that this software works. (But if you find any bugs,
please let us know!)
2. You can use this software for whatever you want. You don't have to pay us.
3. You may not pretend that you wrote this software. If you use it in a
program, you must acknowledge somewhere in your documentation that
you've used the IJG code.
In legalese:
The authors make NO WARRANTY or representation, either express or implied,
with respect to this software, its quality, accuracy, merchantability, or
fitness for a particular purpose. This software is provided "AS IS", and you,
its user, assume the entire risk as to its quality and accuracy.
This software is copyright (C) 1991-2013, Thomas G. Lane, Guido Vollbeding.
All Rights Reserved except as specified below.
Permission is hereby granted to use, copy, modify, and distribute this
software (or portions thereof) for any purpose, without fee, subject to these
conditions:
(1) If any part of the source code for this software is distributed, then this
README file must be included, with this copyright and no-warranty notice
unaltered; and any additions, deletions, or changes to the original files
must be clearly indicated in accompanying documentation.
(2) If only executable code is distributed, then the accompanying
documentation must state that "this software is based in part on the work of
the Independent JPEG Group".
(3) Permission for use of this software is granted only if the user accepts
full responsibility for any undesirable consequences; the authors accept
NO LIABILITY for damages of any kind.
These conditions apply to any software derived from or based on the IJG code,
not just to the unmodified library. If you use our work, you ought to
acknowledge us.
Permission is NOT granted for the use of any IJG author's name or company name
in advertising or publicity relating to this software or products derived from
it. This software may be referred to only as "the Independent JPEG Group's
software".
We specifically permit and encourage the use of this software as the basis of
commercial products, provided that all warranty or liability claims are
assumed by the product vendor.
The Unix configuration script "configure" was produced with GNU Autoconf.
It is copyright by the Free Software Foundation but is freely distributable.
The same holds for its supporting scripts (config.guess, config.sub,
ltmain.sh). Another support script, install-sh, is copyright by X Consortium
but is also freely distributable.
The IJG distribution formerly included code to read and write GIF files.
To avoid entanglement with the Unisys LZW patent, GIF reading support has
been removed altogether, and the GIF writer has been simplified to produce
"uncompressed GIFs". This technique does not use the LZW algorithm; the
resulting GIF files are larger than usual, but are readable by all standard
GIF decoders.
We are required to state that
"The Graphics Interchange Format(c) is the Copyright property of
CompuServe Incorporated. GIF(sm) is a Service Mark property of
CompuServe Incorporated."
REFERENCES
==========
We recommend reading one or more of these references before trying to
understand the innards of the JPEG software.
The best short technical introduction to the JPEG compression algorithm is
Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34 no. 4), pp. 30-44.
(Adjacent articles in that issue discuss MPEG motion picture compression,
applications of JPEG, and related topics.) If you don't have the CACM issue
handy, a PostScript file containing a revised version of Wallace's article is
available at http://www.ijg.org/files/wallace.ps.gz. The file (actually
a preprint for an article that appeared in IEEE Trans. Consumer Electronics)
omits the sample images that appeared in CACM, but it includes corrections
and some added material. Note: the Wallace article is copyright ACM and IEEE,
and it may not be used for commercial purposes.
A somewhat less technical, more leisurely introduction to JPEG can be found in
"The Data Compression Book" by Mark Nelson and Jean-loup Gailly, published by
M&T Books (New York), 2nd ed. 1996, ISBN 1-55851-434-1. This book provides
good explanations and example C code for a multitude of compression methods
including JPEG. It is an excellent source if you are comfortable reading C
code but don't know much about data compression in general. The book's JPEG
sample code is far from industrial-strength, but when you are ready to look
at a full implementation, you've got one here...
The best currently available description of JPEG is the textbook "JPEG Still
Image Data Compression Standard" by William B. Pennebaker and Joan L.
Mitchell, published by Van Nostrand Reinhold, 1993, ISBN 0-442-01272-1.
Price US$59.95, 638 pp. The book includes the complete text of the ISO JPEG
standards (DIS 10918-1 and draft DIS 10918-2).
Although this is by far the most detailed and comprehensive exposition of
JPEG publicly available, we point out that it is still missing an explanation
of the most essential properties and algorithms of the underlying DCT
technology.
If you think that you know about DCT-based JPEG after reading this book,
then you are in delusion. The real fundamentals and corresponding potential
of DCT-based JPEG are not publicly known so far, and that is the reason for
all the mistaken developments taking place in the image coding domain.
The original JPEG standard is divided into two parts, Part 1 being the actual
specification, while Part 2 covers compliance testing methods. Part 1 is
titled "Digital Compression and Coding of Continuous-tone Still Images,
Part 1: Requirements and guidelines" and has document numbers ISO/IEC IS
10918-1, ITU-T T.81. Part 2 is titled "Digital Compression and Coding of
Continuous-tone Still Images, Part 2: Compliance testing" and has document
numbers ISO/IEC IS 10918-2, ITU-T T.83.
IJG JPEG 8 introduced an implementation of the JPEG SmartScale extension
which is specified in two documents: A contributed document at ITU and ISO
with title "ITU-T JPEG-Plus Proposal for Extending ITU-T T.81 for Advanced
Image Coding", April 2006, Geneva, Switzerland. The latest version of this
document is Revision 3. And a contributed document ISO/IEC JTC1/SC29/WG1 N
5799 with title "Evolution of JPEG", June/July 2011, Berlin, Germany.
IJG JPEG 9 introduces a reversible color transform for improved lossless
compression which is described in a contributed document ISO/IEC JTC1/SC29/
WG1 N 6080 with title "JPEG 9 Lossless Coding", June/July 2012, Paris,
France.
The JPEG standard does not specify all details of an interchangeable file
format. For the omitted details we follow the "JFIF" conventions, revision
1.02. JFIF 1.02 has been adopted as an Ecma International Technical Report
and thus received a formal publication status. It is available as a free
download in PDF format from
http://www.ecma-international.org/publications/techreports/E-TR-098.htm.
A PostScript version of the JFIF document is available at
http://www.ijg.org/files/jfif.ps.gz. There is also a plain text version at
http://www.ijg.org/files/jfif.txt.gz, but it is missing the figures.
The TIFF 6.0 file format specification can be obtained by FTP from
ftp://ftp.sgi.com/graphics/tiff/TIFF6.ps.gz. The JPEG incorporation scheme
found in the TIFF 6.0 spec of 3-June-92 has a number of serious problems.
IJG does not recommend use of the TIFF 6.0 design (TIFF Compression tag 6).
Instead, we recommend the JPEG design proposed by TIFF Technical Note #2
(Compression tag 7). Copies of this Note can be obtained from
http://www.ijg.org/files/. It is expected that the next revision
of the TIFF spec will replace the 6.0 JPEG design with the Note's design.
Although IJG's own code does not support TIFF/JPEG, the free libtiff library
uses our library to implement TIFF/JPEG per the Note.
ARCHIVE LOCATIONS
=================
The "official" archive site for this software is www.ijg.org.
The most recent released version can always be found there in
directory "files". This particular version will be archived as
http://www.ijg.org/files/jpegsrc.v9.tar.gz, and in Windows-compatible
"zip" archive format as http://www.ijg.org/files/jpegsr9.zip.
The JPEG FAQ (Frequently Asked Questions) article is a source of some
general information about JPEG.
It is available on the World Wide Web at http://www.faqs.org/faqs/jpeg-faq/
and other news.answers archive sites, including the official news.answers
archive at rtfm.mit.edu: ftp://rtfm.mit.edu/pub/usenet/news.answers/jpeg-faq/.
If you don't have Web or FTP access, send e-mail to mail-server@rtfm.mit.edu
with body
send usenet/news.answers/jpeg-faq/part1
send usenet/news.answers/jpeg-faq/part2
ACKNOWLEDGMENTS
===============
Thank to Juergen Bruder for providing me with a copy of the common DCT
algorithm article, only to find out that I had come to the same result
in a more direct and comprehensible way with a more generative approach.
Thank to Istvan Sebestyen and Joan L. Mitchell for inviting me to the
ITU JPEG (Study Group 16) meeting in Geneva, Switzerland.
Thank to Thomas Wiegand and Gary Sullivan for inviting me to the
Joint Video Team (MPEG & ITU) meeting in Geneva, Switzerland.
Thank to Thomas Richter and Daniel Lee for inviting me to the
ISO/IEC JTC1/SC29/WG1 (also known as JPEG, together with ITU-T SG16)
meeting in Berlin, Germany.
Thank to John Korejwa and Massimo Ballerini for inviting me to
fruitful consultations in Boston, MA and Milan, Italy.
Thank to Hendrik Elstner, Roland Fassauer, Simone Zuck, Guenther
Maier-Gerber, Walter Stoeber, Fred Schmitz, and Norbert Braunagel
for corresponding business development.
Thank to Nico Zschach and Dirk Stelling of the technical support team
at the Digital Images company in Halle for providing me with extra
equipment for configuration tests.
Thank to Richard F. Lyon (then of Foveon Inc.) for fruitful
communication about JPEG configuration in Sigma Photo Pro software.
Thank to Andrew Finkenstadt for hosting the ijg.org site.
Last but not least special thank to Thomas G. Lane for the original
design and development of this singular software package.
FILE FORMAT WARS
================
The ISO/IEC JTC1/SC29/WG1 standards committee (also known as JPEG, together
with ITU-T SG16) currently promotes different formats containing the name
"JPEG" which is misleading because these formats are incompatible with
original DCT-based JPEG and are based on faulty technologies.
IJG therefore does not and will not support such momentary mistakes
(see REFERENCES).
There exist also distributions under the name "OpenJPEG" promoting such
kind of formats which is misleading because they don't support original
JPEG images.
We have no sympathy for the promotion of inferior formats. Indeed, one of
the original reasons for developing this free software was to help force
convergence on common, interoperable format standards for JPEG files.
Don't use an incompatible file format!
(In any case, our decoder will remain capable of reading existing JPEG
image files indefinitely.)
Furthermore, the ISO committee pretends to be "responsible for the popular
JPEG" in their public reports which is not true because they don't respond to
actual requirements for the maintenance of the original JPEG specification.
There are currently different distributions in circulation containing the
name "libjpeg" which is misleading because they don't have the features and
are incompatible with formats supported by actual IJG libjpeg distributions.
One of those fakes is released by members of the ISO committee and just uses
the name of libjpeg for misdirection of people, similar to the abuse of the
name JPEG as described above, while having nothing in common with actual IJG
libjpeg distributions.
The other one claims to be a "derivative" or "fork" of the original libjpeg
and violates the license conditions as described under LEGAL ISSUES above.
We have no sympathy for the release of misleading and illegal distributions
derived from obsolete code bases.
Don't use an obsolete code base!
TO DO
=====
Version 9 is the second release of a new generation JPEG standard
to overcome the limitations of the original JPEG specification.
More features are being prepared for coming releases...
Please send bug reports, offers of help, etc. to jpeg-info@jpegclub.org.
libs/jpeg-9/aclocal.m4
Vendored
-9683
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File diff suppressed because it is too large Load Diff
libs/jpeg-9/ar-lib
-270
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@@ -1,270 +0,0 @@
#! /bin/sh
# Wrapper for Microsoft lib.exe
me=ar-lib
scriptversion=2012-03-01.08; # UTC
# Copyright (C) 2010-2013 Free Software Foundation, Inc.
# Written by Peter Rosin <peda@lysator.liu.se>.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# This file is maintained in Automake, please report
# bugs to <bug-automake@gnu.org> or send patches to
# <automake-patches@gnu.org>.
# func_error message
func_error ()
{
echo "$me: $1" 1>&2
exit 1
}
file_conv=
# func_file_conv build_file
# Convert a $build file to $host form and store it in $file
# Currently only supports Windows hosts.
func_file_conv ()
{
file=$1
case $file in
/ | /[!/]*) # absolute file, and not a UNC file
if test -z "$file_conv"; then
# lazily determine how to convert abs files
case `uname -s` in
MINGW*)
file_conv=mingw
;;
CYGWIN*)
file_conv=cygwin
;;
*)
file_conv=wine
;;
esac
fi
case $file_conv in
mingw)
file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
;;
cygwin)
file=`cygpath -m "$file" || echo "$file"`
;;
wine)
file=`winepath -w "$file" || echo "$file"`
;;
esac
;;
esac
}
# func_at_file at_file operation archive
# Iterate over all members in AT_FILE performing OPERATION on ARCHIVE
# for each of them.
# When interpreting the content of the @FILE, do NOT use func_file_conv,
# since the user would need to supply preconverted file names to
# binutils ar, at least for MinGW.
func_at_file ()
{
operation=$2
archive=$3
at_file_contents=`cat "$1"`
eval set x "$at_file_contents"
shift
for member
do
$AR -NOLOGO $operation:"$member" "$archive" || exit $?
done
}
case $1 in
'')
func_error "no command. Try '$0 --help' for more information."
;;
-h | --h*)
cat <<EOF
Usage: $me [--help] [--version] PROGRAM ACTION ARCHIVE [MEMBER...]
Members may be specified in a file named with @FILE.
EOF
exit $?
;;
-v | --v*)
echo "$me, version $scriptversion"
exit $?
;;
esac
if test $# -lt 3; then
func_error "you must specify a program, an action and an archive"
fi
AR=$1
shift
while :
do
if test $# -lt 2; then
func_error "you must specify a program, an action and an archive"
fi
case $1 in
-lib | -LIB \
| -ltcg | -LTCG \
| -machine* | -MACHINE* \
| -subsystem* | -SUBSYSTEM* \
| -verbose | -VERBOSE \
| -wx* | -WX* )
AR="$AR $1"
shift
;;
*)
action=$1
shift
break
;;
esac
done
orig_archive=$1
shift
func_file_conv "$orig_archive"
archive=$file
# strip leading dash in $action
action=${action#-}
delete=
extract=
list=
quick=
replace=
index=
create=
while test -n "$action"
do
case $action in
d*) delete=yes ;;
x*) extract=yes ;;
t*) list=yes ;;
q*) quick=yes ;;
r*) replace=yes ;;
s*) index=yes ;;
S*) ;; # the index is always updated implicitly
c*) create=yes ;;
u*) ;; # TODO: don't ignore the update modifier
v*) ;; # TODO: don't ignore the verbose modifier
*)
func_error "unknown action specified"
;;
esac
action=${action#?}
done
case $delete$extract$list$quick$replace,$index in
yes,* | ,yes)
;;
yesyes*)
func_error "more than one action specified"
;;
*)
func_error "no action specified"
;;
esac
if test -n "$delete"; then
if test ! -f "$orig_archive"; then
func_error "archive not found"
fi
for member
do
case $1 in
@*)
func_at_file "${1#@}" -REMOVE "$archive"
;;
*)
func_file_conv "$1"
$AR -NOLOGO -REMOVE:"$file" "$archive" || exit $?
;;
esac
done
elif test -n "$extract"; then
if test ! -f "$orig_archive"; then
func_error "archive not found"
fi
if test $# -gt 0; then
for member
do
case $1 in
@*)
func_at_file "${1#@}" -EXTRACT "$archive"
;;
*)
func_file_conv "$1"
$AR -NOLOGO -EXTRACT:"$file" "$archive" || exit $?
;;
esac
done
else
$AR -NOLOGO -LIST "$archive" | sed -e 's/\\/\\\\/g' | while read member
do
$AR -NOLOGO -EXTRACT:"$member" "$archive" || exit $?
done
fi
elif test -n "$quick$replace"; then
if test ! -f "$orig_archive"; then
if test -z "$create"; then
echo "$me: creating $orig_archive"
fi
orig_archive=
else
orig_archive=$archive
fi
for member
do
case $1 in
@*)
func_file_conv "${1#@}"
set x "$@" "@$file"
;;
*)
func_file_conv "$1"
set x "$@" "$file"
;;
esac
shift
shift
done
if test -n "$orig_archive"; then
$AR -NOLOGO -OUT:"$archive" "$orig_archive" "$@" || exit $?
else
$AR -NOLOGO -OUT:"$archive" "$@" || exit $?
fi
elif test -n "$list"; then
if test ! -f "$orig_archive"; then
func_error "archive not found"
fi
$AR -NOLOGO -LIST "$archive" || exit $?
fi
libs/jpeg-9/cderror.h
-134
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@@ -1,134 +0,0 @@
/*
* cderror.h
*
* Copyright (C) 1994-1997, Thomas G. Lane.
* Modified 2009 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file defines the error and message codes for the cjpeg/djpeg
* applications. These strings are not needed as part of the JPEG library
* proper.
* Edit this file to add new codes, or to translate the message strings to
* some other language.
*/
/*
* To define the enum list of message codes, include this file without
* defining macro JMESSAGE. To create a message string table, include it
* again with a suitable JMESSAGE definition (see jerror.c for an example).
*/
#ifndef JMESSAGE
#ifndef CDERROR_H
#define CDERROR_H
/* First time through, define the enum list */
#define JMAKE_ENUM_LIST
#else
/* Repeated inclusions of this file are no-ops unless JMESSAGE is defined */
#define JMESSAGE(code,string)
#endif /* CDERROR_H */
#endif /* JMESSAGE */
#ifdef JMAKE_ENUM_LIST
typedef enum {
#define JMESSAGE(code,string) code ,
#endif /* JMAKE_ENUM_LIST */
JMESSAGE(JMSG_FIRSTADDONCODE=1000, NULL) /* Must be first entry! */
#ifdef BMP_SUPPORTED
JMESSAGE(JERR_BMP_BADCMAP, "Unsupported BMP colormap format")
JMESSAGE(JERR_BMP_BADDEPTH, "Only 8- and 24-bit BMP files are supported")
JMESSAGE(JERR_BMP_BADHEADER, "Invalid BMP file: bad header length")
JMESSAGE(JERR_BMP_BADPLANES, "Invalid BMP file: biPlanes not equal to 1")
JMESSAGE(JERR_BMP_COLORSPACE, "BMP output must be grayscale or RGB")
JMESSAGE(JERR_BMP_COMPRESSED, "Sorry, compressed BMPs not yet supported")
JMESSAGE(JERR_BMP_EMPTY, "Empty BMP image")
JMESSAGE(JERR_BMP_NOT, "Not a BMP file - does not start with BM")
JMESSAGE(JTRC_BMP, "%ux%u 24-bit BMP image")
JMESSAGE(JTRC_BMP_MAPPED, "%ux%u 8-bit colormapped BMP image")
JMESSAGE(JTRC_BMP_OS2, "%ux%u 24-bit OS2 BMP image")
JMESSAGE(JTRC_BMP_OS2_MAPPED, "%ux%u 8-bit colormapped OS2 BMP image")
#endif /* BMP_SUPPORTED */
#ifdef GIF_SUPPORTED
JMESSAGE(JERR_GIF_BUG, "GIF output got confused")
JMESSAGE(JERR_GIF_CODESIZE, "Bogus GIF codesize %d")
JMESSAGE(JERR_GIF_COLORSPACE, "GIF output must be grayscale or RGB")
JMESSAGE(JERR_GIF_IMAGENOTFOUND, "Too few images in GIF file")
JMESSAGE(JERR_GIF_NOT, "Not a GIF file")
JMESSAGE(JTRC_GIF, "%ux%ux%d GIF image")
JMESSAGE(JTRC_GIF_BADVERSION,
"Warning: unexpected GIF version number '%c%c%c'")
JMESSAGE(JTRC_GIF_EXTENSION, "Ignoring GIF extension block of type 0x%02x")
JMESSAGE(JTRC_GIF_NONSQUARE, "Caution: nonsquare pixels in input")
JMESSAGE(JWRN_GIF_BADDATA, "Corrupt data in GIF file")
JMESSAGE(JWRN_GIF_CHAR, "Bogus char 0x%02x in GIF file, ignoring")
JMESSAGE(JWRN_GIF_ENDCODE, "Premature end of GIF image")
JMESSAGE(JWRN_GIF_NOMOREDATA, "Ran out of GIF bits")
#endif /* GIF_SUPPORTED */
#ifdef PPM_SUPPORTED
JMESSAGE(JERR_PPM_COLORSPACE, "PPM output must be grayscale or RGB")
JMESSAGE(JERR_PPM_NONNUMERIC, "Nonnumeric data in PPM file")
JMESSAGE(JERR_PPM_NOT, "Not a PPM/PGM file")
JMESSAGE(JTRC_PGM, "%ux%u PGM image")
JMESSAGE(JTRC_PGM_TEXT, "%ux%u text PGM image")
JMESSAGE(JTRC_PPM, "%ux%u PPM image")
JMESSAGE(JTRC_PPM_TEXT, "%ux%u text PPM image")
#endif /* PPM_SUPPORTED */
#ifdef RLE_SUPPORTED
JMESSAGE(JERR_RLE_BADERROR, "Bogus error code from RLE library")
JMESSAGE(JERR_RLE_COLORSPACE, "RLE output must be grayscale or RGB")
JMESSAGE(JERR_RLE_DIMENSIONS, "Image dimensions (%ux%u) too large for RLE")
JMESSAGE(JERR_RLE_EMPTY, "Empty RLE file")
JMESSAGE(JERR_RLE_EOF, "Premature EOF in RLE header")
JMESSAGE(JERR_RLE_MEM, "Insufficient memory for RLE header")
JMESSAGE(JERR_RLE_NOT, "Not an RLE file")
JMESSAGE(JERR_RLE_TOOMANYCHANNELS, "Cannot handle %d output channels for RLE")
JMESSAGE(JERR_RLE_UNSUPPORTED, "Cannot handle this RLE setup")
JMESSAGE(JTRC_RLE, "%ux%u full-color RLE file")
JMESSAGE(JTRC_RLE_FULLMAP, "%ux%u full-color RLE file with map of length %d")
JMESSAGE(JTRC_RLE_GRAY, "%ux%u grayscale RLE file")
JMESSAGE(JTRC_RLE_MAPGRAY, "%ux%u grayscale RLE file with map of length %d")
JMESSAGE(JTRC_RLE_MAPPED, "%ux%u colormapped RLE file with map of length %d")
#endif /* RLE_SUPPORTED */
#ifdef TARGA_SUPPORTED
JMESSAGE(JERR_TGA_BADCMAP, "Unsupported Targa colormap format")
JMESSAGE(JERR_TGA_BADPARMS, "Invalid or unsupported Targa file")
JMESSAGE(JERR_TGA_COLORSPACE, "Targa output must be grayscale or RGB")
JMESSAGE(JTRC_TGA, "%ux%u RGB Targa image")
JMESSAGE(JTRC_TGA_GRAY, "%ux%u grayscale Targa image")
JMESSAGE(JTRC_TGA_MAPPED, "%ux%u colormapped Targa image")
#else
JMESSAGE(JERR_TGA_NOTCOMP, "Targa support was not compiled")
#endif /* TARGA_SUPPORTED */
JMESSAGE(JERR_BAD_CMAP_FILE,
"Color map file is invalid or of unsupported format")
JMESSAGE(JERR_TOO_MANY_COLORS,
"Output file format cannot handle %d colormap entries")
JMESSAGE(JERR_UNGETC_FAILED, "ungetc failed")
#ifdef TARGA_SUPPORTED
JMESSAGE(JERR_UNKNOWN_FORMAT,
"Unrecognized input file format --- perhaps you need -targa")
#else
JMESSAGE(JERR_UNKNOWN_FORMAT, "Unrecognized input file format")
#endif
JMESSAGE(JERR_UNSUPPORTED_FORMAT, "Unsupported output file format")
#ifdef JMAKE_ENUM_LIST
JMSG_LASTADDONCODE
} ADDON_MESSAGE_CODE;
#undef JMAKE_ENUM_LIST
#endif /* JMAKE_ENUM_LIST */
/* Zap JMESSAGE macro so that future re-inclusions do nothing by default */
#undef JMESSAGE
libs/jpeg-9/cdjpeg.c
-181
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@@ -1,181 +0,0 @@
/*
* cdjpeg.c
*
* Copyright (C) 1991-1997, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains common support routines used by the IJG application
* programs (cjpeg, djpeg, jpegtran).
*/
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include <ctype.h> /* to declare isupper(), tolower() */
#ifdef NEED_SIGNAL_CATCHER
#include <signal.h> /* to declare signal() */
#endif
#ifdef USE_SETMODE
#include <fcntl.h> /* to declare setmode()'s parameter macros */
/* If you have setmode() but not <io.h>, just delete this line: */
#include <io.h> /* to declare setmode() */
#endif
/*
* Signal catcher to ensure that temporary files are removed before aborting.
* NB: for Amiga Manx C this is actually a global routine named _abort();
* we put "#define signal_catcher _abort" in jconfig.h. Talk about bogus...
*/
#ifdef NEED_SIGNAL_CATCHER
static j_common_ptr sig_cinfo;
void /* must be global for Manx C */
signal_catcher (int signum)
{
if (sig_cinfo != NULL) {
if (sig_cinfo->err != NULL) /* turn off trace output */
sig_cinfo->err->trace_level = 0;
jpeg_destroy(sig_cinfo); /* clean up memory allocation & temp files */
}
exit(EXIT_FAILURE);
}
GLOBAL(void)
enable_signal_catcher (j_common_ptr cinfo)
{
sig_cinfo = cinfo;
#ifdef SIGINT /* not all systems have SIGINT */
signal(SIGINT, signal_catcher);
#endif
#ifdef SIGTERM /* not all systems have SIGTERM */
signal(SIGTERM, signal_catcher);
#endif
}
#endif
/*
* Optional progress monitor: display a percent-done figure on stderr.
*/
#ifdef PROGRESS_REPORT
METHODDEF(void)
progress_monitor (j_common_ptr cinfo)
{
cd_progress_ptr prog = (cd_progress_ptr) cinfo->progress;
int total_passes = prog->pub.total_passes + prog->total_extra_passes;
int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit);
if (percent_done != prog->percent_done) {
prog->percent_done = percent_done;
if (total_passes > 1) {
fprintf(stderr, "\rPass %d/%d: %3d%% ",
prog->pub.completed_passes + prog->completed_extra_passes + 1,
total_passes, percent_done);
} else {
fprintf(stderr, "\r %3d%% ", percent_done);
}
fflush(stderr);
}
}
GLOBAL(void)
start_progress_monitor (j_common_ptr cinfo, cd_progress_ptr progress)
{
/* Enable progress display, unless trace output is on */
if (cinfo->err->trace_level == 0) {
progress->pub.progress_monitor = progress_monitor;
progress->completed_extra_passes = 0;
progress->total_extra_passes = 0;
progress->percent_done = -1;
cinfo->progress = &progress->pub;
}
}
GLOBAL(void)
end_progress_monitor (j_common_ptr cinfo)
{
/* Clear away progress display */
if (cinfo->err->trace_level == 0) {
fprintf(stderr, "\r \r");
fflush(stderr);
}
}
#endif
/*
* Case-insensitive matching of possibly-abbreviated keyword switches.
* keyword is the constant keyword (must be lower case already),
* minchars is length of minimum legal abbreviation.
*/
GLOBAL(boolean)
keymatch (char * arg, const char * keyword, int minchars)
{
register int ca, ck;
register int nmatched = 0;
while ((ca = *arg++) != '\0') {
if ((ck = *keyword++) == '\0')
return FALSE; /* arg longer than keyword, no good */
if (isupper(ca)) /* force arg to lcase (assume ck is already) */
ca = tolower(ca);
if (ca != ck)
return FALSE; /* no good */
nmatched++; /* count matched characters */
}
/* reached end of argument; fail if it's too short for unique abbrev */
if (nmatched < minchars)
return FALSE;
return TRUE; /* A-OK */
}
/*
* Routines to establish binary I/O mode for stdin and stdout.
* Non-Unix systems often require some hacking to get out of text mode.
*/
GLOBAL(FILE *)
read_stdin (void)
{
FILE * input_file = stdin;
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdin), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) {
fprintf(stderr, "Cannot reopen stdin\n");
exit(EXIT_FAILURE);
}
#endif
return input_file;
}
GLOBAL(FILE *)
write_stdout (void)
{
FILE * output_file = stdout;
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdout), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) {
fprintf(stderr, "Cannot reopen stdout\n");
exit(EXIT_FAILURE);
}
#endif
return output_file;
}
libs/jpeg-9/cdjpeg.h
-187
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@@ -1,187 +0,0 @@
/*
* cdjpeg.h
*
* Copyright (C) 1994-1997, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains common declarations for the sample applications
* cjpeg and djpeg. It is NOT used by the core JPEG library.
*/
#define JPEG_CJPEG_DJPEG /* define proper options in jconfig.h */
#define JPEG_INTERNAL_OPTIONS /* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */
#include "jinclude.h"
#include "jpeglib.h"
#include "jerror.h" /* get library error codes too */
#include "cderror.h" /* get application-specific error codes */
/*
* Object interface for cjpeg's source file decoding modules
*/
typedef struct cjpeg_source_struct * cjpeg_source_ptr;
struct cjpeg_source_struct {
JMETHOD(void, start_input, (j_compress_ptr cinfo,
cjpeg_source_ptr sinfo));
JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo,
cjpeg_source_ptr sinfo));
JMETHOD(void, finish_input, (j_compress_ptr cinfo,
cjpeg_source_ptr sinfo));
FILE *input_file;
JSAMPARRAY buffer;
JDIMENSION buffer_height;
};
/*
* Object interface for djpeg's output file encoding modules
*/
typedef struct djpeg_dest_struct * djpeg_dest_ptr;
struct djpeg_dest_struct {
/* start_output is called after jpeg_start_decompress finishes.
* The color map will be ready at this time, if one is needed.
*/
JMETHOD(void, start_output, (j_decompress_ptr cinfo,
djpeg_dest_ptr dinfo));
/* Emit the specified number of pixel rows from the buffer. */
JMETHOD(void, put_pixel_rows, (j_decompress_ptr cinfo,
djpeg_dest_ptr dinfo,
JDIMENSION rows_supplied));
/* Finish up at the end of the image. */
JMETHOD(void, finish_output, (j_decompress_ptr cinfo,
djpeg_dest_ptr dinfo));
/* Target file spec; filled in by djpeg.c after object is created. */
FILE * output_file;
/* Output pixel-row buffer. Created by module init or start_output.
* Width is cinfo->output_width * cinfo->output_components;
* height is buffer_height.
*/
JSAMPARRAY buffer;
JDIMENSION buffer_height;
};
/*
* cjpeg/djpeg may need to perform extra passes to convert to or from
* the source/destination file format. The JPEG library does not know
* about these passes, but we'd like them to be counted by the progress
* monitor. We use an expanded progress monitor object to hold the
* additional pass count.
*/
struct cdjpeg_progress_mgr {
struct jpeg_progress_mgr pub; /* fields known to JPEG library */
int completed_extra_passes; /* extra passes completed */
int total_extra_passes; /* total extra */
/* last printed percentage stored here to avoid multiple printouts */
int percent_done;
};
typedef struct cdjpeg_progress_mgr * cd_progress_ptr;
/* Short forms of external names for systems with brain-damaged linkers. */
#ifdef NEED_SHORT_EXTERNAL_NAMES
#define jinit_read_bmp jIRdBMP
#define jinit_write_bmp jIWrBMP
#define jinit_read_gif jIRdGIF
#define jinit_write_gif jIWrGIF
#define jinit_read_ppm jIRdPPM
#define jinit_write_ppm jIWrPPM
#define jinit_read_rle jIRdRLE
#define jinit_write_rle jIWrRLE
#define jinit_read_targa jIRdTarga
#define jinit_write_targa jIWrTarga
#define read_quant_tables RdQTables
#define read_scan_script RdScnScript
#define set_quality_ratings SetQRates
#define set_quant_slots SetQSlots
#define set_sample_factors SetSFacts
#define read_color_map RdCMap
#define enable_signal_catcher EnSigCatcher
#define start_progress_monitor StProgMon
#define end_progress_monitor EnProgMon
#define read_stdin RdStdin
#define write_stdout WrStdout
#endif /* NEED_SHORT_EXTERNAL_NAMES */
/* Module selection routines for I/O modules. */
EXTERN(cjpeg_source_ptr) jinit_read_bmp JPP((j_compress_ptr cinfo));
EXTERN(djpeg_dest_ptr) jinit_write_bmp JPP((j_decompress_ptr cinfo,
boolean is_os2));
EXTERN(cjpeg_source_ptr) jinit_read_gif JPP((j_compress_ptr cinfo));
EXTERN(djpeg_dest_ptr) jinit_write_gif JPP((j_decompress_ptr cinfo));
EXTERN(cjpeg_source_ptr) jinit_read_ppm JPP((j_compress_ptr cinfo));
EXTERN(djpeg_dest_ptr) jinit_write_ppm JPP((j_decompress_ptr cinfo));
EXTERN(cjpeg_source_ptr) jinit_read_rle JPP((j_compress_ptr cinfo));
EXTERN(djpeg_dest_ptr) jinit_write_rle JPP((j_decompress_ptr cinfo));
EXTERN(cjpeg_source_ptr) jinit_read_targa JPP((j_compress_ptr cinfo));
EXTERN(djpeg_dest_ptr) jinit_write_targa JPP((j_decompress_ptr cinfo));
/* cjpeg support routines (in rdswitch.c) */
EXTERN(boolean) read_quant_tables JPP((j_compress_ptr cinfo, char * filename,
boolean force_baseline));
EXTERN(boolean) read_scan_script JPP((j_compress_ptr cinfo, char * filename));
EXTERN(boolean) set_quality_ratings JPP((j_compress_ptr cinfo, char *arg,
boolean force_baseline));
EXTERN(boolean) set_quant_slots JPP((j_compress_ptr cinfo, char *arg));
EXTERN(boolean) set_sample_factors JPP((j_compress_ptr cinfo, char *arg));
/* djpeg support routines (in rdcolmap.c) */
EXTERN(void) read_color_map JPP((j_decompress_ptr cinfo, FILE * infile));
/* common support routines (in cdjpeg.c) */
EXTERN(void) enable_signal_catcher JPP((j_common_ptr cinfo));
EXTERN(void) start_progress_monitor JPP((j_common_ptr cinfo,
cd_progress_ptr progress));
EXTERN(void) end_progress_monitor JPP((j_common_ptr cinfo));
EXTERN(boolean) keymatch JPP((char * arg, const char * keyword, int minchars));
EXTERN(FILE *) read_stdin JPP((void));
EXTERN(FILE *) write_stdout JPP((void));
/* miscellaneous useful macros */
#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */
#define READ_BINARY "r"
#define WRITE_BINARY "w"
#else
#ifdef VMS /* VMS is very nonstandard */
#define READ_BINARY "rb", "ctx=stm"
#define WRITE_BINARY "wb", "ctx=stm"
#else /* standard ANSI-compliant case */
#define READ_BINARY "rb"
#define WRITE_BINARY "wb"
#endif
#endif
#ifndef EXIT_FAILURE /* define exit() codes if not provided */
#define EXIT_FAILURE 1
#endif
#ifndef EXIT_SUCCESS
#ifdef VMS
#define EXIT_SUCCESS 1 /* VMS is very nonstandard */
#else
#define EXIT_SUCCESS 0
#endif
#endif
#ifndef EXIT_WARNING
#ifdef VMS
#define EXIT_WARNING 1 /* VMS is very nonstandard */
#else
#define EXIT_WARNING 2
#endif
#endif
libs/jpeg-9/change.log
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@@ -1,382 +0,0 @@
CHANGE LOG for Independent JPEG Group's JPEG software
Version 9 13-Jan-2013
----------------------
Add cjpeg -rgb1 option to create an RGB JPEG file, and insert
a simple reversible color transform into the processing which
significantly improves the compression.
The recommended command for lossless coding of RGB images is now
cjpeg -rgb1 -block 1 -arithmetic.
As said, this option improves the compression significantly, but
the files are not compatible with JPEG decoders prior to IJG v9
due to the included color transform.
The used color transform and marker signaling is compatible with
other JPEG standards (e.g., JPEG-LS part 2).
Remove the automatic de-ANSI-fication support (Automake 1.12).
Thank also to Nitin A Kamble for suggestion.
Add remark for jpeg_mem_dest() in jdatadst.c.
Thank to Elie-Gregoire Khoury for the hint.
Support files with invalid component identifiers (created
by Adobe PDF). Thank to Robin Watts for the suggestion.
Adapt full buffer case in jcmainct.c for use with scaled DCT.
Thank to Sergii Biloshytskyi for the suggestion.
Add type identifier for declaration of noreturn functions.
Thank to Brett L. Moore for the suggestion.
Correct argument type in format string, avoid compiler warnings.
Thank to Vincent Torri for hint.
Add missing #include directives in configuration checks, avoid
configuration errors. Thank to John Spencer for the hint.
Version 8d 15-Jan-2012
-----------------------
Add cjpeg -rgb option to create RGB JPEG files.
Using this switch suppresses the conversion from RGB
colorspace input to the default YCbCr JPEG colorspace.
This feature allows true lossless JPEG coding of RGB color images.
The recommended command for this purpose is currently
cjpeg -rgb -block 1 -arithmetic.
SmartScale capable decoder (introduced with IJG JPEG 8) required.
Thank to Michael Koch for the initial suggestion.
Add option to disable the region adjustment in the transupp crop code.
Thank to Jeffrey Friedl for the suggestion.
Thank to Richard Jones and Edd Dawson for various minor corrections.
Thank to Akim Demaille for configure.ac cleanup.
Version 8c 16-Jan-2011
-----------------------
Add option to compression library and cjpeg (-block N) to use
different DCT block size.
All N from 1 to 16 are possible. Default is 8 (baseline format).
Larger values produce higher compression,
smaller values produce higher quality.
SmartScale capable decoder (introduced with IJG JPEG 8) required.
Version 8b 16-May-2010
-----------------------
Repair problem in new memory source manager with corrupt JPEG data.
Thank to Ted Campbell and Samuel Chun for the report.
Repair problem in Makefile.am test target.
Thank to anonymous user for the report.
Support MinGW installation with automatic configure.
Thank to Volker Grabsch for the suggestion.
Version 8a 28-Feb-2010
-----------------------
Writing tables-only datastreams via jpeg_write_tables works again.
Support 32-bit BMPs (RGB image with Alpha channel) for read in cjpeg.
Thank to Brett Blackham for the suggestion.
Improve accuracy in floating point IDCT calculation.
Thank to Robert Hooke for the hint.
Version 8 10-Jan-2010
----------------------
jpegtran now supports the same -scale option as djpeg for "lossless" resize.
An implementation of the JPEG SmartScale extension is required for this
feature. A (draft) specification of the JPEG SmartScale extension is
available as a contributed document at ITU and ISO. Revision 2 or later
of the document is required (latest document version is Revision 3).
The SmartScale extension will enable more features beside lossless resize
in future implementations, as described in the document (new compression
options).
Add sanity check in BMP reader module to avoid cjpeg crash for empty input
image (thank to Isaev Ildar of ISP RAS, Moscow, RU for reporting this error).
Add data source and destination managers for read from and write to
memory buffers. New API functions jpeg_mem_src and jpeg_mem_dest.
Thank to Roberto Boni from Italy for the suggestion.
Version 7 27-Jun-2009
----------------------
New scaled DCTs implemented.
djpeg now supports scalings N/8 with all N from 1 to 16.
cjpeg now supports scalings 8/N with all N from 1 to 16.
Scaled DCTs with size larger than 8 are now also used for resolving the
common 2x2 chroma subsampling case without additional spatial resampling.
Separate spatial resampling for those kind of files is now only necessary
for N>8 scaling cases.
Furthermore, separate scaled DCT functions are provided for direct resolving
of the common asymmetric subsampling cases (2x1 and 1x2) without additional
spatial resampling.
cjpeg -quality option has been extended for support of separate quality
settings for luminance and chrominance (or in general, for every provided
quantization table slot).
New API function jpeg_default_qtables() and q_scale_factor array in library.
Added -nosmooth option to cjpeg, complementary to djpeg.
New variable "do_fancy_downsampling" in library, complement to fancy
upsampling. Fancy upsampling now uses direct DCT scaling with sizes
larger than 8. The old method is not reversible and has been removed.
Support arithmetic entropy encoding and decoding.
Added files jaricom.c, jcarith.c, jdarith.c.
Straighten the file structure:
Removed files jidctred.c, jcphuff.c, jchuff.h, jdphuff.c, jdhuff.h.
jpegtran has a new "lossless" cropping feature.
Implement -perfect option in jpegtran, new API function
jtransform_perfect_transform() in transupp. (DP 204_perfect.dpatch)
Better error messages for jpegtran fopen failure.
(DP 203_jpegtran_errmsg.dpatch)
Fix byte order issue with 16bit PPM/PGM files in rdppm.c/wrppm.c:
according to Netpbm, the de facto standard implementation of the PNM formats,
the most significant byte is first. (DP 203_rdppm.dpatch)
Add -raw option to rdjpgcom not to mangle the output.
(DP 205_rdjpgcom_raw.dpatch)
Make rdjpgcom locale aware. (DP 201_rdjpgcom_locale.dpatch)
Add extern "C" to jpeglib.h.
This avoids the need to put extern "C" { ... } around #include "jpeglib.h"
in your C++ application. Defining the symbol DONT_USE_EXTERN_C in the
configuration prevents this. (DP 202_jpeglib.h_c++.dpatch)
Version 6b 27-Mar-1998
-----------------------
jpegtran has new features for lossless image transformations (rotation
and flipping) as well as "lossless" reduction to grayscale.
jpegtran now copies comments by default; it has a -copy switch to enable
copying all APPn blocks as well, or to suppress comments. (Formerly it
always suppressed comments and APPn blocks.) jpegtran now also preserves
JFIF version and resolution information.
New decompressor library feature: COM and APPn markers found in the input
file can be saved in memory for later use by the application. (Before,
you had to code this up yourself with a custom marker processor.)
There is an unused field "void * client_data" now in compress and decompress
parameter structs; this may be useful in some applications.
JFIF version number information is now saved by the decoder and accepted by
the encoder. jpegtran uses this to copy the source file's version number,
to ensure "jpegtran -copy all" won't create bogus files that contain JFXX
extensions but claim to be version 1.01. Applications that generate their
own JFXX extension markers also (finally) have a supported way to cause the
encoder to emit JFIF version number 1.02.
djpeg's trace mode reports JFIF 1.02 thumbnail images as such, rather
than as unknown APP0 markers.
In -verbose mode, djpeg and rdjpgcom will try to print the contents of
APP12 markers as text. Some digital cameras store useful text information
in APP12 markers.
Handling of truncated data streams is more robust: blocks beyond the one in
which the error occurs will be output as uniform gray, or left unchanged
if decoding a progressive JPEG. The appearance no longer depends on the
Huffman tables being used.
Huffman tables are checked for validity much more carefully than before.
To avoid the Unisys LZW patent, djpeg's GIF output capability has been
changed to produce "uncompressed GIFs", and cjpeg's GIF input capability
has been removed altogether. We're not happy about it either, but there
seems to be no good alternative.
The configure script now supports building libjpeg as a shared library
on many flavors of Unix (all the ones that GNU libtool knows how to
build shared libraries for). Use "./configure --enable-shared" to
try this out.
New jconfig file and makefiles for Microsoft Visual C++ and Developer Studio.
Also, a jconfig file and a build script for Metrowerks CodeWarrior
on Apple Macintosh. makefile.dj has been updated for DJGPP v2, and there
are miscellaneous other minor improvements in the makefiles.
jmemmac.c now knows how to create temporary files following Mac System 7
conventions.
djpeg's -map switch is now able to read raw-format PPM files reliably.
cjpeg -progressive -restart no longer generates any unnecessary DRI markers.
Multiple calls to jpeg_simple_progression for a single JPEG object
no longer leak memory.
Version 6a 7-Feb-96
--------------------
Library initialization sequence modified to detect version mismatches
and struct field packing mismatches between library and calling application.
This change requires applications to be recompiled, but does not require
any application source code change.
All routine declarations changed to the style "GLOBAL(type) name ...",
that is, GLOBAL, LOCAL, METHODDEF, EXTERN are now macros taking the
routine's return type as an argument. This makes it possible to add
Microsoft-style linkage keywords to all the routines by changing just
these macros. Note that any application code that was using these macros
will have to be changed.
DCT coefficient quantization tables are now stored in normal array order
rather than zigzag order. Application code that calls jpeg_add_quant_table,
or otherwise manipulates quantization tables directly, will need to be
changed. If you need to make such code work with either older or newer
versions of the library, a test like "#if JPEG_LIB_VERSION >= 61" is
recommended.
djpeg's trace capability now dumps DQT tables in natural order, not zigzag
order. This allows the trace output to be made into a "-qtables" file
more easily.
New system-dependent memory manager module for use on Apple Macintosh.
Fix bug in cjpeg's -smooth option: last one or two scanlines would be
duplicates of the prior line unless the image height mod 16 was 1 or 2.
Repair minor problems in VMS, BCC, MC6 makefiles.
New configure script based on latest GNU Autoconf.
Correct the list of include files needed by MetroWerks C for ccommand().
Numerous small documentation updates.
Version 6 2-Aug-95
-------------------
Progressive JPEG support: library can read and write full progressive JPEG
files. A "buffered image" mode supports incremental decoding for on-the-fly
display of progressive images. Simply recompiling an existing IJG-v5-based
decoder with v6 should allow it to read progressive files, though of course
without any special progressive display.
New "jpegtran" application performs lossless transcoding between different
JPEG formats; primarily, it can be used to convert baseline to progressive
JPEG and vice versa. In support of jpegtran, the library now allows lossless
reading and writing of JPEG files as DCT coefficient arrays. This ability
may be of use in other applications.
Notes for programmers:
* We changed jpeg_start_decompress() to be able to suspend; this makes all
decoding modes available to suspending-input applications. However,
existing applications that use suspending input will need to be changed
to check the return value from jpeg_start_decompress(). You don't need to
do anything if you don't use a suspending data source.
* We changed the interface to the virtual array routines: access_virt_array
routines now take a count of the number of rows to access this time. The
last parameter to request_virt_array routines is now interpreted as the
maximum number of rows that may be accessed at once, but not necessarily
the height of every access.
Version 5b 15-Mar-95
---------------------
Correct bugs with grayscale images having v_samp_factor > 1.
jpeg_write_raw_data() now supports output suspension.
Correct bugs in "configure" script for case of compiling in
a directory other than the one containing the source files.
Repair bug in jquant1.c: sometimes didn't use as many colors as it could.
Borland C makefile and jconfig file work under either MS-DOS or OS/2.
Miscellaneous improvements to documentation.
Version 5a 7-Dec-94
--------------------
Changed color conversion roundoff behavior so that grayscale values are
represented exactly. (This causes test image files to change.)
Make ordered dither use 16x16 instead of 4x4 pattern for a small quality
improvement.
New configure script based on latest GNU Autoconf.
Fix configure script to handle CFLAGS correctly.
Rename *.auto files to *.cfg, so that configure script still works if
file names have been truncated for DOS.
Fix bug in rdbmp.c: didn't allow for extra data between header and image.
Modify rdppm.c/wrppm.c to handle 2-byte raw PPM/PGM formats for 12-bit data.
Fix several bugs in rdrle.c.
NEED_SHORT_EXTERNAL_NAMES option was broken.
Revise jerror.h/jerror.c for more flexibility in message table.
Repair oversight in jmemname.c NO_MKTEMP case: file could be there
but unreadable.
Version 5 24-Sep-94
--------------------
Version 5 represents a nearly complete redesign and rewrite of the IJG
software. Major user-visible changes include:
* Automatic configuration simplifies installation for most Unix systems.
* A range of speed vs. image quality tradeoffs are supported.
This includes resizing of an image during decompression: scaling down
by a factor of 1/2, 1/4, or 1/8 is handled very efficiently.
* New programs rdjpgcom and wrjpgcom allow insertion and extraction
of text comments in a JPEG file.
The application programmer's interface to the library has changed completely.
Notable improvements include:
* We have eliminated the use of callback routines for handling the
uncompressed image data. The application now sees the library as a
set of routines that it calls to read or write image data on a
scanline-by-scanline basis.
* The application image data is represented in a conventional interleaved-
pixel format, rather than as a separate array for each color channel.
This can save a copying step in many programs.
* The handling of compressed data has been cleaned up: the application can
supply routines to source or sink the compressed data. It is possible to
suspend processing on source/sink buffer overrun, although this is not
supported in all operating modes.
* All static state has been eliminated from the library, so that multiple
instances of compression or decompression can be active concurrently.
* JPEG abbreviated datastream formats are supported, ie, quantization and
Huffman tables can be stored separately from the image data.
* And not only that, but the documentation of the library has improved
considerably!
The last widely used release before the version 5 rewrite was version 4A of
18-Feb-93. Change logs before that point have been discarded, since they
are not of much interest after the rewrite.
libs/jpeg-9/cjpeg.1
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.TH CJPEG 1 "4 May 2012"
.SH NAME
cjpeg \- compress an image file to a JPEG file
.SH SYNOPSIS
.B cjpeg
[
.I options
]
[
.I filename
]
.LP
.SH DESCRIPTION
.LP
.B cjpeg
compresses the named image file, or the standard input if no file is
named, and produces a JPEG/JFIF file on the standard output.
The currently supported input file formats are: PPM (PBMPLUS color
format), PGM (PBMPLUS gray-scale format), BMP, Targa, and RLE (Utah Raster
Toolkit format). (RLE is supported only if the URT library is available.)
.SH OPTIONS
All switch names may be abbreviated; for example,
.B \-grayscale
may be written
.B \-gray
or
.BR \-gr .
Most of the "basic" switches can be abbreviated to as little as one letter.
Upper and lower case are equivalent (thus
.B \-BMP
is the same as
.BR \-bmp ).
British spellings are also accepted (e.g.,
.BR \-greyscale ),
though for brevity these are not mentioned below.
.PP
The basic switches are:
.TP
.BI \-quality " N[,...]"
Scale quantization tables to adjust image quality. Quality is 0 (worst) to
100 (best); default is 75. (See below for more info.)
.TP
.B \-grayscale
Create monochrome JPEG file from color input. Be sure to use this switch when
compressing a grayscale BMP file, because
.B cjpeg
isn't bright enough to notice whether a BMP file uses only shades of gray.
By saying
.BR \-grayscale ,
you'll get a smaller JPEG file that takes less time to process.
.TP
.B \-rgb
Create RGB JPEG file.
Using this switch suppresses the conversion from RGB
colorspace input to the default YCbCr JPEG colorspace.
You can use this switch in combination with the
.BI \-block " N"
switch (see below) for lossless JPEG coding.
See also the
.B \-rgb1
switch below.
.TP
.B \-optimize
Perform optimization of entropy encoding parameters. Without this, default
encoding parameters are used.
.B \-optimize
usually makes the JPEG file a little smaller, but
.B cjpeg
runs somewhat slower and needs much more memory. Image quality and speed of
decompression are unaffected by
.BR \-optimize .
.TP
.B \-progressive
Create progressive JPEG file (see below).
.TP
.BI \-scale " M/N"
Scale the output image by a factor M/N. Currently supported scale factors are
M/N with all N from 1 to 16, where M is the destination DCT size, which is 8
by default (see
.BI \-block " N"
switch below).
.TP
.B \-targa
Input file is Targa format. Targa files that contain an "identification"
field will not be automatically recognized by
.BR cjpeg ;
for such files you must specify
.B \-targa
to make
.B cjpeg
treat the input as Targa format.
For most Targa files, you won't need this switch.
.PP
The
.B \-quality
switch lets you trade off compressed file size against quality of the
reconstructed image: the higher the quality setting, the larger the JPEG file,
and the closer the output image will be to the original input. Normally you
want to use the lowest quality setting (smallest file) that decompresses into
something visually indistinguishable from the original image. For this
purpose the quality setting should be between 50 and 95; the default of 75 is
often about right. If you see defects at
.B \-quality
75, then go up 5 or 10 counts at a time until you are happy with the output
image. (The optimal setting will vary from one image to another.)
.PP
.B \-quality
100 will generate a quantization table of all 1's, minimizing loss in the
quantization step (but there is still information loss in subsampling, as well
as roundoff error). This setting is mainly of interest for experimental
purposes. Quality values above about 95 are
.B not
recommended for normal use; the compressed file size goes up dramatically for
hardly any gain in output image quality.
.PP
In the other direction, quality values below 50 will produce very small files
of low image quality. Settings around 5 to 10 might be useful in preparing an
index of a large image library, for example. Try
.B \-quality
2 (or so) for some amusing Cubist effects. (Note: quality
values below about 25 generate 2-byte quantization tables, which are
considered optional in the JPEG standard.
.B cjpeg
emits a warning message when you give such a quality value, because some
other JPEG programs may be unable to decode the resulting file. Use
.B \-baseline
if you need to ensure compatibility at low quality values.)
.PP
The
.B \-quality
option has been extended in IJG version 7 for support of separate quality
settings for luminance and chrominance (or in general, for every provided
quantization table slot). This feature is useful for high-quality
applications which cannot accept the damage of color data by coarse
subsampling settings. You can now easily reduce the color data amount more
smoothly with finer control without separate subsampling. The resulting file
is fully compliant with standard JPEG decoders.
Note that the
.B \-quality
ratings refer to the quantization table slots, and that the last value is
replicated if there are more q-table slots than parameters. The default
q-table slots are 0 for luminance and 1 for chrominance with default tables as
given in the JPEG standard. This is compatible with the old behaviour in case
that only one parameter is given, which is then used for both luminance and
chrominance (slots 0 and 1). More or custom quantization tables can be set
with
.B \-qtables
and assigned to components with
.B \-qslots
parameter (see the "wizard" switches below).
.B Caution:
You must explicitly add
.BI \-sample " 1x1"
for efficient separate color
quality selection, since the default value used by library is 2x2!
.PP
The
.B \-progressive
switch creates a "progressive JPEG" file. In this type of JPEG file, the data
is stored in multiple scans of increasing quality. If the file is being
transmitted over a slow communications link, the decoder can use the first
scan to display a low-quality image very quickly, and can then improve the
display with each subsequent scan. The final image is exactly equivalent to a
standard JPEG file of the same quality setting, and the total file size is
about the same --- often a little smaller.
.PP
Switches for advanced users:
.TP
.B \-arithmetic
Use arithmetic coding.
.B Caution:
arithmetic coded JPEG is not yet widely implemented, so many decoders will
be unable to view an arithmetic coded JPEG file at all.
.TP
.BI \-block " N"
Set DCT block size. All N from 1 to 16 are possible.
Default is 8 (baseline format).
Larger values produce higher compression,
smaller values produce higher quality
(exact DCT stage possible with 1 or 2; with the default quality of 75 and
default Luminance qtable the DCT+Quantization stage is lossless for N=1).
.B Caution:
An implementation of the JPEG SmartScale extension is required for this
feature. SmartScale enabled JPEG is not yet widely implemented, so many
decoders will be unable to view a SmartScale extended JPEG file at all.
.TP
.B \-rgb1
Create RGB JPEG file with reversible color transform.
Works like the
.B \-rgb
switch (see above) and inserts a simple reversible color transform
into the processing which significantly improves the compression.
Use this switch in combination with the
.BI \-block " N"
switch (see above) for lossless JPEG coding.
.B Caution:
A decoder with inverse color transform support is required for
this feature. Reversible color transform support is not yet
widely implemented, so many decoders will be unable to view
a reversible color transformed JPEG file at all.
.TP
.B \-dct int
Use integer DCT method (default).
.TP
.B \-dct fast
Use fast integer DCT (less accurate).
.TP
.B \-dct float
Use floating-point DCT method.
The float method is very slightly more accurate than the int method, but is
much slower unless your machine has very fast floating-point hardware. Also
note that results of the floating-point method may vary slightly across
machines, while the integer methods should give the same results everywhere.
The fast integer method is much less accurate than the other two.
.TP
.B \-nosmooth
Don't use high-quality downsampling.
.TP
.BI \-restart " N"
Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is
attached to the number.
.B \-restart 0
(the default) means no restart markers.
.TP
.BI \-smooth " N"
Smooth the input image to eliminate dithering noise. N, ranging from 1 to
100, indicates the strength of smoothing. 0 (the default) means no smoothing.
.TP
.BI \-maxmemory " N"
Set limit for amount of memory to use in processing large images. Value is
in thousands of bytes, or millions of bytes if "M" is attached to the
number. For example,
.B \-max 4m
selects 4000000 bytes. If more space is needed, temporary files will be used.
.TP
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
give more output. Also, version information is printed at startup.
.TP
.B \-debug
Same as
.BR \-verbose .
.PP
The
.B \-restart
option inserts extra markers that allow a JPEG decoder to resynchronize after
a transmission error. Without restart markers, any damage to a compressed
file will usually ruin the image from the point of the error to the end of the
image; with restart markers, the damage is usually confined to the portion of
the image up to the next restart marker. Of course, the restart markers
occupy extra space. We recommend
.B \-restart 1
for images that will be transmitted across unreliable networks such as Usenet.
.PP
The
.B \-smooth
option filters the input to eliminate fine-scale noise. This is often useful
when converting dithered images to JPEG: a moderate smoothing factor of 10 to
50 gets rid of dithering patterns in the input file, resulting in a smaller
JPEG file and a better-looking image. Too large a smoothing factor will
visibly blur the image, however.
.PP
Switches for wizards:
.TP
.B \-baseline
Force baseline-compatible quantization tables to be generated. This clamps
quantization values to 8 bits even at low quality settings. (This switch is
poorly named, since it does not ensure that the output is actually baseline
JPEG. For example, you can use
.B \-baseline
and
.B \-progressive
together.)
.TP
.BI \-qtables " file"
Use the quantization tables given in the specified text file.
.TP
.BI \-qslots " N[,...]"
Select which quantization table to use for each color component.
.TP
.BI \-sample " HxV[,...]"
Set JPEG sampling factors for each color component.
.TP
.BI \-scans " file"
Use the scan script given in the specified text file.
.PP
The "wizard" switches are intended for experimentation with JPEG. If you
don't know what you are doing, \fBdon't use them\fR. These switches are
documented further in the file wizard.txt.
.SH EXAMPLES
.LP
This example compresses the PPM file foo.ppm with a quality factor of
60 and saves the output as foo.jpg:
.IP
.B cjpeg \-quality
.I 60 foo.ppm
.B >
.I foo.jpg
.SH HINTS
Color GIF files are not the ideal input for JPEG; JPEG is really intended for
compressing full-color (24-bit) images. In particular, don't try to convert
cartoons, line drawings, and other images that have only a few distinct
colors. GIF works great on these, JPEG does not. If you want to convert a
GIF to JPEG, you should experiment with
.BR cjpeg 's
.B \-quality
and
.B \-smooth
options to get a satisfactory conversion.
.B \-smooth 10
or so is often helpful.
.PP
Avoid running an image through a series of JPEG compression/decompression
cycles. Image quality loss will accumulate; after ten or so cycles the image
may be noticeably worse than it was after one cycle. It's best to use a
lossless format while manipulating an image, then convert to JPEG format when
you are ready to file the image away.
.PP
The
.B \-optimize
option to
.B cjpeg
is worth using when you are making a "final" version for posting or archiving.
It's also a win when you are using low quality settings to make very small
JPEG files; the percentage improvement is often a lot more than it is on
larger files. (At present,
.B \-optimize
mode is always selected when generating progressive JPEG files.)
.SH ENVIRONMENT
.TP
.B JPEGMEM
If this environment variable is set, its value is the default memory limit.
The value is specified as described for the
.B \-maxmemory
switch.
.B JPEGMEM
overrides the default value specified when the program was compiled, and
itself is overridden by an explicit
.BR \-maxmemory .
.SH SEE ALSO
.BR djpeg (1),
.BR jpegtran (1),
.BR rdjpgcom (1),
.BR wrjpgcom (1)
.br
.BR ppm (5),
.BR pgm (5)
.br
Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
.SH AUTHOR
Independent JPEG Group
.SH BUGS
GIF input files are no longer supported, to avoid the Unisys LZW patent.
(Conversion of GIF files to JPEG is usually a bad idea anyway.)
.PP
Not all variants of BMP and Targa file formats are supported.
.PP
The
.B \-targa
switch is not a bug, it's a feature. (It would be a bug if the Targa format
designers had not been clueless.)
libs/jpeg-9/cjpeg.c
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/*
* cjpeg.c
*
* Copyright (C) 1991-1998, Thomas G. Lane.
* Modified 2003-2013 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains a command-line user interface for the JPEG compressor.
* It should work on any system with Unix- or MS-DOS-style command lines.
*
* Two different command line styles are permitted, depending on the
* compile-time switch TWO_FILE_COMMANDLINE:
* cjpeg [options] inputfile outputfile
* cjpeg [options] [inputfile]
* In the second style, output is always to standard output, which you'd
* normally redirect to a file or pipe to some other program. Input is
* either from a named file or from standard input (typically redirected).
* The second style is convenient on Unix but is unhelpful on systems that
* don't support pipes. Also, you MUST use the first style if your system
* doesn't do binary I/O to stdin/stdout.
* To simplify script writing, the "-outfile" switch is provided. The syntax
* cjpeg [options] -outfile outputfile inputfile
* works regardless of which command line style is used.
*/
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include "jversion.h" /* for version message */
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
#ifdef __MWERKS__
#include <SIOUX.h> /* Metrowerks needs this */
#include <console.h> /* ... and this */
#endif
#ifdef THINK_C
#include <console.h> /* Think declares it here */
#endif
#endif
/* Create the add-on message string table. */
#define JMESSAGE(code,string) string ,
static const char * const cdjpeg_message_table[] = {
#include "cderror.h"
NULL
};
/*
* This routine determines what format the input file is,
* and selects the appropriate input-reading module.
*
* To determine which family of input formats the file belongs to,
* we may look only at the first byte of the file, since C does not
* guarantee that more than one character can be pushed back with ungetc.
* Looking at additional bytes would require one of these approaches:
* 1) assume we can fseek() the input file (fails for piped input);
* 2) assume we can push back more than one character (works in
* some C implementations, but unportable);
* 3) provide our own buffering (breaks input readers that want to use
* stdio directly, such as the RLE library);
* or 4) don't put back the data, and modify the input_init methods to assume
* they start reading after the start of file (also breaks RLE library).
* #1 is attractive for MS-DOS but is untenable on Unix.
*
* The most portable solution for file types that can't be identified by their
* first byte is to make the user tell us what they are. This is also the
* only approach for "raw" file types that contain only arbitrary values.
* We presently apply this method for Targa files. Most of the time Targa
* files start with 0x00, so we recognize that case. Potentially, however,
* a Targa file could start with any byte value (byte 0 is the length of the
* seldom-used ID field), so we provide a switch to force Targa input mode.
*/
static boolean is_targa; /* records user -targa switch */
LOCAL(cjpeg_source_ptr)
select_file_type (j_compress_ptr cinfo, FILE * infile)
{
int c;
if (is_targa) {
#ifdef TARGA_SUPPORTED
return jinit_read_targa(cinfo);
#else
ERREXIT(cinfo, JERR_TGA_NOTCOMP);
#endif
}
if ((c = getc(infile)) == EOF)
ERREXIT(cinfo, JERR_INPUT_EMPTY);
if (ungetc(c, infile) == EOF)
ERREXIT(cinfo, JERR_UNGETC_FAILED);
switch (c) {
#ifdef BMP_SUPPORTED
case 'B':
return jinit_read_bmp(cinfo);
#endif
#ifdef GIF_SUPPORTED
case 'G':
return jinit_read_gif(cinfo);
#endif
#ifdef PPM_SUPPORTED
case 'P':
return jinit_read_ppm(cinfo);
#endif
#ifdef RLE_SUPPORTED
case 'R':
return jinit_read_rle(cinfo);
#endif
#ifdef TARGA_SUPPORTED
case 0x00:
return jinit_read_targa(cinfo);
#endif
default:
ERREXIT(cinfo, JERR_UNKNOWN_FORMAT);
break;
}
return NULL; /* suppress compiler warnings */
}
/*
* Argument-parsing code.
* The switch parser is designed to be useful with DOS-style command line
* syntax, ie, intermixed switches and file names, where only the switches
* to the left of a given file name affect processing of that file.
* The main program in this file doesn't actually use this capability...
*/
static const char * progname; /* program name for error messages */
static char * outfilename; /* for -outfile switch */
LOCAL(void)
usage (void)
/* complain about bad command line */
{
fprintf(stderr, "usage: %s [switches] ", progname);
#ifdef TWO_FILE_COMMANDLINE
fprintf(stderr, "inputfile outputfile\n");
#else
fprintf(stderr, "[inputfile]\n");
#endif
fprintf(stderr, "Switches (names may be abbreviated):\n");
fprintf(stderr, " -quality N[,...] Compression quality (0..100; 5-95 is useful range)\n");
fprintf(stderr, " -grayscale Create monochrome JPEG file\n");
fprintf(stderr, " -rgb Create RGB JPEG file\n");
#ifdef ENTROPY_OPT_SUPPORTED
fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n");
#endif
#ifdef C_PROGRESSIVE_SUPPORTED
fprintf(stderr, " -progressive Create progressive JPEG file\n");
#endif
#ifdef DCT_SCALING_SUPPORTED
fprintf(stderr, " -scale M/N Scale image by fraction M/N, eg, 1/2\n");
#endif
#ifdef TARGA_SUPPORTED
fprintf(stderr, " -targa Input file is Targa format (usually not needed)\n");
#endif
fprintf(stderr, "Switches for advanced users:\n");
#ifdef C_ARITH_CODING_SUPPORTED
fprintf(stderr, " -arithmetic Use arithmetic coding\n");
#endif
#ifdef DCT_SCALING_SUPPORTED
fprintf(stderr, " -block N DCT block size (1..16; default is 8)\n");
#endif
#if JPEG_LIB_VERSION_MAJOR >= 9
fprintf(stderr, " -rgb1 Create RGB JPEG file with reversible color transform\n");
#endif
#ifdef DCT_ISLOW_SUPPORTED
fprintf(stderr, " -dct int Use integer DCT method%s\n",
(JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
#endif
#ifdef DCT_IFAST_SUPPORTED
fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n",
(JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
#endif
#ifdef DCT_FLOAT_SUPPORTED
fprintf(stderr, " -dct float Use floating-point DCT method%s\n",
(JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
#endif
fprintf(stderr, " -nosmooth Don't use high-quality downsampling\n");
fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n");
#ifdef INPUT_SMOOTHING_SUPPORTED
fprintf(stderr, " -smooth N Smooth dithered input (N=1..100 is strength)\n");
#endif
fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
fprintf(stderr, " -outfile name Specify name for output file\n");
fprintf(stderr, " -verbose or -debug Emit debug output\n");
fprintf(stderr, "Switches for wizards:\n");
fprintf(stderr, " -baseline Force baseline quantization tables\n");
fprintf(stderr, " -qtables file Use quantization tables given in file\n");
fprintf(stderr, " -qslots N[,...] Set component quantization tables\n");
fprintf(stderr, " -sample HxV[,...] Set component sampling factors\n");
#ifdef C_MULTISCAN_FILES_SUPPORTED
fprintf(stderr, " -scans file Create multi-scan JPEG per script file\n");
#endif
exit(EXIT_FAILURE);
}
LOCAL(int)
parse_switches (j_compress_ptr cinfo, int argc, char **argv,
int last_file_arg_seen, boolean for_real)
/* Parse optional switches.
* Returns argv[] index of first file-name argument (== argc if none).
* Any file names with indexes <= last_file_arg_seen are ignored;
* they have presumably been processed in a previous iteration.
* (Pass 0 for last_file_arg_seen on the first or only iteration.)
* for_real is FALSE on the first (dummy) pass; we may skip any expensive
* processing.
*/
{
int argn;
char * arg;
boolean force_baseline;
boolean simple_progressive;
char * qualityarg = NULL; /* saves -quality parm if any */
char * qtablefile = NULL; /* saves -qtables filename if any */
char * qslotsarg = NULL; /* saves -qslots parm if any */
char * samplearg = NULL; /* saves -sample parm if any */
char * scansarg = NULL; /* saves -scans parm if any */
/* Set up default JPEG parameters. */
force_baseline = FALSE; /* by default, allow 16-bit quantizers */
simple_progressive = FALSE;
is_targa = FALSE;
outfilename = NULL;
cinfo->err->trace_level = 0;
/* Scan command line options, adjust parameters */
for (argn = 1; argn < argc; argn++) {
arg = argv[argn];
if (*arg != '-') {
/* Not a switch, must be a file name argument */
if (argn <= last_file_arg_seen) {
outfilename = NULL; /* -outfile applies to just one input file */
continue; /* ignore this name if previously processed */
}
break; /* else done parsing switches */
}
arg++; /* advance past switch marker character */
if (keymatch(arg, "arithmetic", 1)) {
/* Use arithmetic coding. */
#ifdef C_ARITH_CODING_SUPPORTED
cinfo->arith_code = TRUE;
#else
fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "baseline", 2)) {
/* Force baseline-compatible output (8-bit quantizer values). */
force_baseline = TRUE;
} else if (keymatch(arg, "block", 2)) {
/* Set DCT block size. */
#if defined DCT_SCALING_SUPPORTED && JPEG_LIB_VERSION_MAJOR >= 8 && \
(JPEG_LIB_VERSION_MAJOR > 8 || JPEG_LIB_VERSION_MINOR >= 3)
int val;
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%d", &val) != 1)
usage();
if (val < 1 || val > 16)
usage();
cinfo->block_size = val;
#else
fprintf(stderr, "%s: sorry, block size setting not supported\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "dct", 2)) {
/* Select DCT algorithm. */
if (++argn >= argc) /* advance to next argument */
usage();
if (keymatch(argv[argn], "int", 1)) {
cinfo->dct_method = JDCT_ISLOW;
} else if (keymatch(argv[argn], "fast", 2)) {
cinfo->dct_method = JDCT_IFAST;
} else if (keymatch(argv[argn], "float", 2)) {
cinfo->dct_method = JDCT_FLOAT;
} else
usage();
} else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
/* Enable debug printouts. */
/* On first -d, print version identification */
static boolean printed_version = FALSE;
if (! printed_version) {
fprintf(stderr, "Independent JPEG Group's CJPEG, version %s\n%s\n",
JVERSION, JCOPYRIGHT);
printed_version = TRUE;
}
cinfo->err->trace_level++;
} else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
/* Force a monochrome JPEG file to be generated. */
jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);
} else if (keymatch(arg, "rgb", 3) || keymatch(arg, "rgb1", 4)) {
/* Force an RGB JPEG file to be generated. */
#if JPEG_LIB_VERSION_MAJOR >= 9
/* Note: Entropy table assignment in jpeg_set_colorspace depends
* on color_transform.
*/
cinfo->color_transform = arg[3] ? JCT_SUBTRACT_GREEN : JCT_NONE;
#endif
jpeg_set_colorspace(cinfo, JCS_RGB);
} else if (keymatch(arg, "maxmemory", 3)) {
/* Maximum memory in Kb (or Mb with 'm'). */
long lval;
char ch = 'x';
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
usage();
if (ch == 'm' || ch == 'M')
lval *= 1000L;
cinfo->mem->max_memory_to_use = lval * 1000L;
} else if (keymatch(arg, "nosmooth", 3)) {
/* Suppress fancy downsampling. */
cinfo->do_fancy_downsampling = FALSE;
} else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
/* Enable entropy parm optimization. */
#ifdef ENTROPY_OPT_SUPPORTED
cinfo->optimize_coding = TRUE;
#else
fprintf(stderr, "%s: sorry, entropy optimization was not compiled\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "outfile", 4)) {
/* Set output file name. */
if (++argn >= argc) /* advance to next argument */
usage();
outfilename = argv[argn]; /* save it away for later use */
} else if (keymatch(arg, "progressive", 1)) {
/* Select simple progressive mode. */
#ifdef C_PROGRESSIVE_SUPPORTED
simple_progressive = TRUE;
/* We must postpone execution until num_components is known. */
#else
fprintf(stderr, "%s: sorry, progressive output was not compiled\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "quality", 1)) {
/* Quality ratings (quantization table scaling factors). */
if (++argn >= argc) /* advance to next argument */
usage();
qualityarg = argv[argn];
} else if (keymatch(arg, "qslots", 2)) {
/* Quantization table slot numbers. */
if (++argn >= argc) /* advance to next argument */
usage();
qslotsarg = argv[argn];
/* Must delay setting qslots until after we have processed any
* colorspace-determining switches, since jpeg_set_colorspace sets
* default quant table numbers.
*/
} else if (keymatch(arg, "qtables", 2)) {
/* Quantization tables fetched from file. */
if (++argn >= argc) /* advance to next argument */
usage();
qtablefile = argv[argn];
/* We postpone actually reading the file in case -quality comes later. */
} else if (keymatch(arg, "restart", 1)) {
/* Restart interval in MCU rows (or in MCUs with 'b'). */
long lval;
char ch = 'x';
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
usage();
if (lval < 0 || lval > 65535L)
usage();
if (ch == 'b' || ch == 'B') {
cinfo->restart_interval = (unsigned int) lval;
cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
} else {
cinfo->restart_in_rows = (int) lval;
/* restart_interval will be computed during startup */
}
} else if (keymatch(arg, "sample", 2)) {
/* Set sampling factors. */
if (++argn >= argc) /* advance to next argument */
usage();
samplearg = argv[argn];
/* Must delay setting sample factors until after we have processed any
* colorspace-determining switches, since jpeg_set_colorspace sets
* default sampling factors.
*/
} else if (keymatch(arg, "scale", 4)) {
/* Scale the image by a fraction M/N. */
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%u/%u",
&cinfo->scale_num, &cinfo->scale_denom) != 2)
usage();
} else if (keymatch(arg, "scans", 4)) {
/* Set scan script. */
#ifdef C_MULTISCAN_FILES_SUPPORTED
if (++argn >= argc) /* advance to next argument */
usage();
scansarg = argv[argn];
/* We must postpone reading the file in case -progressive appears. */
#else
fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "smooth", 2)) {
/* Set input smoothing factor. */
int val;
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%d", &val) != 1)
usage();
if (val < 0 || val > 100)
usage();
cinfo->smoothing_factor = val;
} else if (keymatch(arg, "targa", 1)) {
/* Input file is Targa format. */
is_targa = TRUE;
} else {
usage(); /* bogus switch */
}
}
/* Post-switch-scanning cleanup */
if (for_real) {
/* Set quantization tables for selected quality. */
/* Some or all may be overridden if -qtables is present. */
if (qualityarg != NULL) /* process -quality if it was present */
if (! set_quality_ratings(cinfo, qualityarg, force_baseline))
usage();
if (qtablefile != NULL) /* process -qtables if it was present */
if (! read_quant_tables(cinfo, qtablefile, force_baseline))
usage();
if (qslotsarg != NULL) /* process -qslots if it was present */
if (! set_quant_slots(cinfo, qslotsarg))
usage();
if (samplearg != NULL) /* process -sample if it was present */
if (! set_sample_factors(cinfo, samplearg))
usage();
#ifdef C_PROGRESSIVE_SUPPORTED
if (simple_progressive) /* process -progressive; -scans can override */
jpeg_simple_progression(cinfo);
#endif
#ifdef C_MULTISCAN_FILES_SUPPORTED
if (scansarg != NULL) /* process -scans if it was present */
if (! read_scan_script(cinfo, scansarg))
usage();
#endif
}
return argn; /* return index of next arg (file name) */
}
/*
* The main program.
*/
int
main (int argc, char **argv)
{
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
#ifdef PROGRESS_REPORT
struct cdjpeg_progress_mgr progress;
#endif
int file_index;
cjpeg_source_ptr src_mgr;
FILE * input_file;
FILE * output_file;
JDIMENSION num_scanlines;
/* On Mac, fetch a command line. */
#ifdef USE_CCOMMAND
argc = ccommand(&argv);
#endif
progname = argv[0];
if (progname == NULL || progname[0] == 0)
progname = "cjpeg"; /* in case C library doesn't provide it */
/* Initialize the JPEG compression object with default error handling. */
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
/* Add some application-specific error messages (from cderror.h) */
jerr.addon_message_table = cdjpeg_message_table;
jerr.first_addon_message = JMSG_FIRSTADDONCODE;
jerr.last_addon_message = JMSG_LASTADDONCODE;
/* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
enable_signal_catcher((j_common_ptr) &cinfo);
#endif
/* Initialize JPEG parameters.
* Much of this may be overridden later.
* In particular, we don't yet know the input file's color space,
* but we need to provide some value for jpeg_set_defaults() to work.
*/
cinfo.in_color_space = JCS_RGB; /* arbitrary guess */
jpeg_set_defaults(&cinfo);
/* Scan command line to find file names.
* It is convenient to use just one switch-parsing routine, but the switch
* values read here are ignored; we will rescan the switches after opening
* the input file.
*/
file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
#ifdef TWO_FILE_COMMANDLINE
/* Must have either -outfile switch or explicit output file name */
if (outfilename == NULL) {
if (file_index != argc-2) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
usage();
}
outfilename = argv[file_index+1];
} else {
if (file_index != argc-1) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
usage();
}
}
#else
/* Unix style: expect zero or one file name */
if (file_index < argc-1) {
fprintf(stderr, "%s: only one input file\n", progname);
usage();
}
#endif /* TWO_FILE_COMMANDLINE */
/* Open the input file. */
if (file_index < argc) {
if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
exit(EXIT_FAILURE);
}
} else {
/* default input file is stdin */
input_file = read_stdin();
}
/* Open the output file. */
if (outfilename != NULL) {
if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
exit(EXIT_FAILURE);
}
} else {
/* default output file is stdout */
output_file = write_stdout();
}
#ifdef PROGRESS_REPORT
start_progress_monitor((j_common_ptr) &cinfo, &progress);
#endif
/* Figure out the input file format, and set up to read it. */
src_mgr = select_file_type(&cinfo, input_file);
src_mgr->input_file = input_file;
/* Read the input file header to obtain file size & colorspace. */
(*src_mgr->start_input) (&cinfo, src_mgr);
/* Now that we know input colorspace, fix colorspace-dependent defaults */
jpeg_default_colorspace(&cinfo);
/* Adjust default compression parameters by re-parsing the options */
file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
/* Specify data destination for compression */
jpeg_stdio_dest(&cinfo, output_file);
/* Start compressor */
jpeg_start_compress(&cinfo, TRUE);
/* Process data */
while (cinfo.next_scanline < cinfo.image_height) {
num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
(void) jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines);
}
/* Finish compression and release memory */
(*src_mgr->finish_input) (&cinfo, src_mgr);
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
/* Close files, if we opened them */
if (input_file != stdin)
fclose(input_file);
if (output_file != stdout)
fclose(output_file);
#ifdef PROGRESS_REPORT
end_progress_monitor((j_common_ptr) &cinfo);
#endif
/* All done. */
exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
return 0; /* suppress no-return-value warnings */
}
libs/jpeg-9/ckconfig.c
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/*
* ckconfig.c
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*/
/*
* This program is intended to help you determine how to configure the JPEG
* software for installation on a particular system. The idea is to try to
* compile and execute this program. If your compiler fails to compile the
* program, make changes as indicated in the comments below. Once you can
* compile the program, run it, and it will produce a "jconfig.h" file for
* your system.
*
* As a general rule, each time you try to compile this program,
* pay attention only to the *first* error message you get from the compiler.
* Many C compilers will issue lots of spurious error messages once they
* have gotten confused. Go to the line indicated in the first error message,
* and read the comments preceding that line to see what to change.
*
* Almost all of the edits you may need to make to this program consist of
* changing a line that reads "#define SOME_SYMBOL" to "#undef SOME_SYMBOL",
* or vice versa. This is called defining or undefining that symbol.
*/
/* First we must see if your system has the include files we need.
* We start out with the assumption that your system has all the ANSI-standard
* include files. If you get any error trying to include one of these files,
* undefine the corresponding HAVE_xxx symbol.
*/
#define HAVE_STDDEF_H /* replace 'define' by 'undef' if error here */
#ifdef HAVE_STDDEF_H /* next line will be skipped if you undef... */
#include <stddef.h>
#endif
#define HAVE_STDLIB_H /* same thing for stdlib.h */
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h> /* If you ain't got this, you ain't got C. */
/* We have to see if your string functions are defined by
* strings.h (old BSD convention) or string.h (everybody else).
* We try the non-BSD convention first; define NEED_BSD_STRINGS
* if the compiler says it can't find string.h.
*/
#undef NEED_BSD_STRINGS
#ifdef NEED_BSD_STRINGS
#include <strings.h>
#else
#include <string.h>
#endif
/* On some systems (especially older Unix machines), type size_t is
* defined only in the include file <sys/types.h>. If you get a failure
* on the size_t test below, try defining NEED_SYS_TYPES_H.
*/
#undef NEED_SYS_TYPES_H /* start by assuming we don't need it */
#ifdef NEED_SYS_TYPES_H
#include <sys/types.h>
#endif
/* Usually type size_t is defined in one of the include files we've included
* above. If not, you'll get an error on the "typedef size_t my_size_t;" line.
* In that case, first try defining NEED_SYS_TYPES_H just above.
* If that doesn't work, you'll have to search through your system library
* to figure out which include file defines "size_t". Look for a line that
* says "typedef something-or-other size_t;". Then, change the line below
* that says "#include <someincludefile.h>" to instead include the file
* you found size_t in, and define NEED_SPECIAL_INCLUDE. If you can't find
* type size_t anywhere, try replacing "#include <someincludefile.h>" with
* "typedef unsigned int size_t;".
*/
#undef NEED_SPECIAL_INCLUDE /* assume we DON'T need it, for starters */
#ifdef NEED_SPECIAL_INCLUDE
#include <someincludefile.h>
#endif
typedef size_t my_size_t; /* The payoff: do we have size_t now? */
/* The next question is whether your compiler supports ANSI-style function
* prototypes. You need to know this in order to choose between using
* makefile.ansi and using makefile.unix.
* The #define line below is set to assume you have ANSI function prototypes.
* If you get an error in this group of lines, undefine HAVE_PROTOTYPES.
*/
#define HAVE_PROTOTYPES
#ifdef HAVE_PROTOTYPES
int testfunction (int arg1, int * arg2); /* check prototypes */
struct methods_struct { /* check method-pointer declarations */
int (*error_exit) (char *msgtext);
int (*trace_message) (char *msgtext);
int (*another_method) (void);
};
int testfunction (int arg1, int * arg2) /* check definitions */
{
return arg2[arg1];
}
int test2function (void) /* check void arg list */
{
return 0;
}
#endif
/* Now we want to find out if your compiler knows what "unsigned char" means.
* If you get an error on the "unsigned char un_char;" line,
* then undefine HAVE_UNSIGNED_CHAR.
*/
#define HAVE_UNSIGNED_CHAR
#ifdef HAVE_UNSIGNED_CHAR
unsigned char un_char;
#endif
/* Now we want to find out if your compiler knows what "unsigned short" means.
* If you get an error on the "unsigned short un_short;" line,
* then undefine HAVE_UNSIGNED_SHORT.
*/
#define HAVE_UNSIGNED_SHORT
#ifdef HAVE_UNSIGNED_SHORT
unsigned short un_short;
#endif
/* Now we want to find out if your compiler understands type "void".
* If you get an error anywhere in here, undefine HAVE_VOID.
*/
#define HAVE_VOID
#ifdef HAVE_VOID
/* Caution: a C++ compiler will insist on complete prototypes */
typedef void * void_ptr; /* check void * */
#ifdef HAVE_PROTOTYPES /* check ptr to function returning void */
typedef void (*void_func) (int a, int b);
#else
typedef void (*void_func) ();
#endif
#ifdef HAVE_PROTOTYPES /* check void function result */
void test3function (void_ptr arg1, void_func arg2)
#else
void test3function (arg1, arg2)
void_ptr arg1;
void_func arg2;
#endif
{
char * locptr = (char *) arg1; /* check casting to and from void * */
arg1 = (void *) locptr;
(*arg2) (1, 2); /* check call of fcn returning void */
}
#endif
/* Now we want to find out if your compiler knows what "const" means.
* If you get an error here, undefine HAVE_CONST.
*/
#define HAVE_CONST
#ifdef HAVE_CONST
static const int carray[3] = {1, 2, 3};
#ifdef HAVE_PROTOTYPES
int test4function (const int arg1)
#else
int test4function (arg1)
const int arg1;
#endif
{
return carray[arg1];
}
#endif
/* If you get an error or warning about this structure definition,
* define INCOMPLETE_TYPES_BROKEN.
*/
#undef INCOMPLETE_TYPES_BROKEN
#ifndef INCOMPLETE_TYPES_BROKEN
typedef struct undefined_structure * undef_struct_ptr;
#endif
/* If you get an error about duplicate names,
* define NEED_SHORT_EXTERNAL_NAMES.
*/
#undef NEED_SHORT_EXTERNAL_NAMES
#ifndef NEED_SHORT_EXTERNAL_NAMES
int possibly_duplicate_function ()
{
return 0;
}
int possibly_dupli_function ()
{
return 1;
}
#endif
/************************************************************************
* OK, that's it. You should not have to change anything beyond this
* point in order to compile and execute this program. (You might get
* some warnings, but you can ignore them.)
* When you run the program, it will make a couple more tests that it
* can do automatically, and then it will create jconfig.h and print out
* any additional suggestions it has.
************************************************************************
*/
#ifdef HAVE_PROTOTYPES
int is_char_signed (int arg)
#else
int is_char_signed (arg)
int arg;
#endif
{
if (arg == 189) { /* expected result for unsigned char */
return 0; /* type char is unsigned */
}
else if (arg != -67) { /* expected result for signed char */
printf("Hmm, it seems 'char' is not eight bits wide on your machine.\n");
printf("I fear the JPEG software will not work at all.\n\n");
}
return 1; /* assume char is signed otherwise */
}
#ifdef HAVE_PROTOTYPES
int is_shifting_signed (long arg)
#else
int is_shifting_signed (arg)
long arg;
#endif
/* See whether right-shift on a long is signed or not. */
{
long res = arg >> 4;
if (res == -0x7F7E80CL) { /* expected result for signed shift */
return 1; /* right shift is signed */
}
/* see if unsigned-shift hack will fix it. */
/* we can't just test exact value since it depends on width of long... */
res |= (~0L) << (32-4);
if (res == -0x7F7E80CL) { /* expected result now? */
return 0; /* right shift is unsigned */
}
printf("Right shift isn't acting as I expect it to.\n");
printf("I fear the JPEG software will not work at all.\n\n");
return 0; /* try it with unsigned anyway */
}
#ifdef HAVE_PROTOTYPES
int main (int argc, char ** argv)
#else
int main (argc, argv)
int argc;
char ** argv;
#endif
{
char signed_char_check = (char) (-67);
FILE *outfile;
/* Attempt to write jconfig.h */
if ((outfile = fopen("jconfig.h", "w")) == NULL) {
printf("Failed to write jconfig.h\n");
return 1;
}
/* Write out all the info */
fprintf(outfile, "/* jconfig.h --- generated by ckconfig.c */\n");
fprintf(outfile, "/* see jconfig.txt for explanations */\n\n");
#ifdef HAVE_PROTOTYPES
fprintf(outfile, "#define HAVE_PROTOTYPES\n");
#else
fprintf(outfile, "#undef HAVE_PROTOTYPES\n");
#endif
#ifdef HAVE_UNSIGNED_CHAR
fprintf(outfile, "#define HAVE_UNSIGNED_CHAR\n");
#else
fprintf(outfile, "#undef HAVE_UNSIGNED_CHAR\n");
#endif
#ifdef HAVE_UNSIGNED_SHORT
fprintf(outfile, "#define HAVE_UNSIGNED_SHORT\n");
#else
fprintf(outfile, "#undef HAVE_UNSIGNED_SHORT\n");
#endif
#ifdef HAVE_VOID
fprintf(outfile, "/* #define void char */\n");
#else
fprintf(outfile, "#define void char\n");
#endif
#ifdef HAVE_CONST
fprintf(outfile, "/* #define const */\n");
#else
fprintf(outfile, "#define const\n");
#endif
if (is_char_signed((int) signed_char_check))
fprintf(outfile, "#undef CHAR_IS_UNSIGNED\n");
else
fprintf(outfile, "#define CHAR_IS_UNSIGNED\n");
#ifdef HAVE_STDDEF_H
fprintf(outfile, "#define HAVE_STDDEF_H\n");
#else
fprintf(outfile, "#undef HAVE_STDDEF_H\n");
#endif
#ifdef HAVE_STDLIB_H
fprintf(outfile, "#define HAVE_STDLIB_H\n");
#else
fprintf(outfile, "#undef HAVE_STDLIB_H\n");
#endif
#ifdef NEED_BSD_STRINGS
fprintf(outfile, "#define NEED_BSD_STRINGS\n");
#else
fprintf(outfile, "#undef NEED_BSD_STRINGS\n");
#endif
#ifdef NEED_SYS_TYPES_H
fprintf(outfile, "#define NEED_SYS_TYPES_H\n");
#else
fprintf(outfile, "#undef NEED_SYS_TYPES_H\n");
#endif
fprintf(outfile, "#undef NEED_FAR_POINTERS\n");
#ifdef NEED_SHORT_EXTERNAL_NAMES
fprintf(outfile, "#define NEED_SHORT_EXTERNAL_NAMES\n");
#else
fprintf(outfile, "#undef NEED_SHORT_EXTERNAL_NAMES\n");
#endif
#ifdef INCOMPLETE_TYPES_BROKEN
fprintf(outfile, "#define INCOMPLETE_TYPES_BROKEN\n");
#else
fprintf(outfile, "#undef INCOMPLETE_TYPES_BROKEN\n");
#endif
fprintf(outfile, "\n#ifdef JPEG_INTERNALS\n\n");
if (is_shifting_signed(-0x7F7E80B1L))
fprintf(outfile, "#undef RIGHT_SHIFT_IS_UNSIGNED\n");
else
fprintf(outfile, "#define RIGHT_SHIFT_IS_UNSIGNED\n");
fprintf(outfile, "\n#endif /* JPEG_INTERNALS */\n");
fprintf(outfile, "\n#ifdef JPEG_CJPEG_DJPEG\n\n");
fprintf(outfile, "#define BMP_SUPPORTED /* BMP image file format */\n");
fprintf(outfile, "#define GIF_SUPPORTED /* GIF image file format */\n");
fprintf(outfile, "#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */\n");
fprintf(outfile, "#undef RLE_SUPPORTED /* Utah RLE image file format */\n");
fprintf(outfile, "#define TARGA_SUPPORTED /* Targa image file format */\n\n");
fprintf(outfile, "#undef TWO_FILE_COMMANDLINE /* You may need this on non-Unix systems */\n");
fprintf(outfile, "#undef NEED_SIGNAL_CATCHER /* Define this if you use jmemname.c */\n");
fprintf(outfile, "#undef DONT_USE_B_MODE\n");
fprintf(outfile, "/* #define PROGRESS_REPORT */ /* optional */\n");
fprintf(outfile, "\n#endif /* JPEG_CJPEG_DJPEG */\n");
/* Close the jconfig.h file */
fclose(outfile);
/* User report */
printf("Configuration check for Independent JPEG Group's software done.\n");
printf("\nI have written the jconfig.h file for you.\n\n");
#ifdef HAVE_PROTOTYPES
printf("You should use makefile.ansi as the starting point for your Makefile.\n");
#else
printf("You should use makefile.unix as the starting point for your Makefile.\n");
#endif
#ifdef NEED_SPECIAL_INCLUDE
printf("\nYou'll need to change jconfig.h to include the system include file\n");
printf("that you found type size_t in, or add a direct definition of type\n");
printf("size_t if that's what you used. Just add it to the end.\n");
#endif
return 0;
}
libs/jpeg-9/coderules.txt
-118
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@@ -1,118 +0,0 @@
IJG JPEG LIBRARY: CODING RULES
Copyright (C) 1991-1996, Thomas G. Lane.
This file is part of the Independent JPEG Group's software.
For conditions of distribution and use, see the accompanying README file.
Since numerous people will be contributing code and bug fixes, it's important
to establish a common coding style. The goal of using similar coding styles
is much more important than the details of just what that style is.
In general we follow the recommendations of "Recommended C Style and Coding
Standards" revision 6.1 (Cannon et al. as modified by Spencer, Keppel and
Brader). This document is available in the IJG FTP archive (see
jpeg/doc/cstyle.ms.tbl.Z, or cstyle.txt.Z for those without nroff/tbl).
Block comments should be laid out thusly:
/*
* Block comments in this style.
*/
We indent statements in K&R style, e.g.,
if (test) {
then-part;
} else {
else-part;
}
with two spaces per indentation level. (This indentation convention is
handled automatically by GNU Emacs and many other text editors.)
Multi-word names should be written in lower case with underscores, e.g.,
multi_word_name (not multiWordName). Preprocessor symbols and enum constants
are similar but upper case (MULTI_WORD_NAME). Names should be unique within
the first fifteen characters. (On some older systems, global names must be
unique within six characters. We accommodate this without cluttering the
source code by using macros to substitute shorter names.)
We use function prototypes everywhere; we rely on automatic source code
transformation to feed prototype-less C compilers. Transformation is done
by the simple and portable tool 'ansi2knr.c' (courtesy of Ghostscript).
ansi2knr is not very bright, so it imposes a format requirement on function
declarations: the function name MUST BEGIN IN COLUMN 1. Thus all functions
should be written in the following style:
LOCAL(int *)
function_name (int a, char *b)
{
code...
}
Note that each function definition must begin with GLOBAL(type), LOCAL(type),
or METHODDEF(type). These macros expand to "static type" or just "type" as
appropriate. They provide a readable indication of the routine's usage and
can readily be changed for special needs. (For instance, special linkage
keywords can be inserted for use in Windows DLLs.)
ansi2knr does not transform method declarations (function pointers in
structs). We handle these with a macro JMETHOD, defined as
#ifdef HAVE_PROTOTYPES
#define JMETHOD(type,methodname,arglist) type (*methodname) arglist
#else
#define JMETHOD(type,methodname,arglist) type (*methodname) ()
#endif
which is used like this:
struct function_pointers {
JMETHOD(void, init_entropy_encoder, (int somearg, jparms *jp));
JMETHOD(void, term_entropy_encoder, (void));
};
Note the set of parentheses surrounding the parameter list.
A similar solution is used for forward and external function declarations
(see the EXTERN and JPP macros).
If the code is to work on non-ANSI compilers, we cannot rely on a prototype
declaration to coerce actual parameters into the right types. Therefore, use
explicit casts on actual parameters whenever the actual parameter type is not
identical to the formal parameter. Beware of implicit conversions to "int".
It seems there are some non-ANSI compilers in which the sizeof() operator
is defined to return int, yet size_t is defined as long. Needless to say,
this is brain-damaged. Always use the SIZEOF() macro in place of sizeof(),
so that the result is guaranteed to be of type size_t.
The JPEG library is intended to be used within larger programs. Furthermore,
we want it to be reentrant so that it can be used by applications that process
multiple images concurrently. The following rules support these requirements:
1. Avoid direct use of file I/O, "malloc", error report printouts, etc;
pass these through the common routines provided.
2. Minimize global namespace pollution. Functions should be declared static
wherever possible. (Note that our method-based calling conventions help this
a lot: in many modules only the initialization function will ever need to be
called directly, so only that function need be externally visible.) All
global function names should begin with "jpeg_", and should have an
abbreviated name (unique in the first six characters) substituted by macro
when NEED_SHORT_EXTERNAL_NAMES is set.
3. Don't use global variables; anything that must be used in another module
should be in the common data structures.
4. Don't use static variables except for read-only constant tables. Variables
that should be private to a module can be placed into private structures (see
the system architecture document, structure.txt).
5. Source file names should begin with "j" for files that are part of the
library proper; source files that are not part of the library, such as cjpeg.c
and djpeg.c, do not begin with "j". Keep source file names to eight
characters (plus ".c" or ".h", etc) to make life easy for MS-DOSers. Keep
compression and decompression code in separate source files --- some
applications may want only one half of the library.
Note: these rules (particularly #4) are not followed religiously in the
modules that are used in cjpeg/djpeg but are not part of the JPEG library
proper. Those modules are not really intended to be used in other
applications.
libs/jpeg-9/config.guess
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libs/jpeg-9/config.sub
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libs/jpeg-9/configure
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libs/jpeg-9/configure.ac
-365
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@@ -1,365 +0,0 @@
# IJG auto-configuration source file.
# Process this file with autoconf to produce a configure script.
#
# Configure script for IJG libjpeg
#
AC_INIT([libjpeg], [9.0.0])
# Directory where autotools helper scripts lives.
AC_CONFIG_AUX_DIR([.])
# Generate configuration headers.
AC_CONFIG_HEADERS([jconfig.h:jconfig.cfg])
# Hack: disable autoheader so that it doesn't overwrite our cfg template.
AUTOHEADER="echo autoheader ignored"
# Check system type
AC_CANONICAL_TARGET
# Initialize Automake
# Don't require all the GNU mandated files
AM_INIT_AUTOMAKE([-Wall -Werror no-dist foreign])
# Make --enable-silent-rules the default.
# To get verbose build output you may configure
# with --disable-silent-rules or use "make V=1".
AM_SILENT_RULES([yes])
# Add configure option --enable-maintainer-mode which enables
# dependency checking and generation useful to package maintainers.
# This is made an option to avoid confusing end users.
AM_MAINTAINER_MODE
# Check for programs
AC_PROG_CC
AC_PROG_CC_STDC
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_PROG_LN_S
AM_PROG_AR
# Check if LD supports linker scripts,
# and define automake conditional HAVE_LD_VERSION_SCRIPT if so.
AC_ARG_ENABLE([ld-version-script],
AS_HELP_STRING([--enable-ld-version-script],
[enable linker version script (default is enabled when possible)]),
[have_ld_version_script=$enableval], [])
if test -z "$have_ld_version_script"; then
AC_MSG_CHECKING([if LD -Wl,--version-script works])
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map"
cat > conftest.map <<EOF
VERS_1 {
global: sym;
};
VERS_2 {
global: sym;
} VERS_1;
EOF
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
[have_ld_version_script=yes], [have_ld_version_script=no])
rm -f conftest.map
LDFLAGS="$save_LDFLAGS"
AC_MSG_RESULT($have_ld_version_script)
fi
AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
# See if compiler supports prototypes.
AC_MSG_CHECKING([for function prototypes])
AC_CACHE_VAL([ijg_cv_have_prototypes],
[AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
int testfunction (int arg1, int * arg2); /* check prototypes */
struct methods_struct { /* check method-pointer declarations */
int (*error_exit) (char *msgtext);
int (*trace_message) (char *msgtext);
int (*another_method) (void);
};
int testfunction (int arg1, int * arg2) /* check definitions */
{ return arg2[arg1]; }
int test2function (void) /* check void arg list */
{ return 0; }
]])],
[ijg_cv_have_prototypes=yes],
[ijg_cv_have_prototypes=no])])
AC_MSG_RESULT([$ijg_cv_have_prototypes])
if test $ijg_cv_have_prototypes = yes; then
AC_DEFINE([HAVE_PROTOTYPES],[1],[Compiler supports function prototypes.])
else
AC_MSG_WARN([Your compiler does not seem to know about function prototypes.
Perhaps it needs a special switch to enable ANSI C mode.
If so, we recommend running configure like this:
./configure CC='cc -switch'
where -switch is the proper switch.])
fi
# Check header files
AC_CHECK_HEADERS([stddef.h stdlib.h locale.h])
AC_CHECK_HEADER([string.h], [],
[AC_DEFINE([NEED_BSD_STRINGS], [1],
[Compiler has <strings.h> rather than standard <string.h>.])])
# See whether type size_t is defined in any ANSI-standard places;
# if not, perhaps it is defined in <sys/types.h>.
AC_MSG_CHECKING([for size_t])
AC_TRY_COMPILE([
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
#ifdef NEED_BSD_STRINGS
#include <strings.h>
#else
#include <string.h>
#endif
typedef size_t my_size_t;
],
[ my_size_t foovar; ],
[ijg_size_t_ok=yes],
[ijg_size_t_ok="not ANSI, perhaps it is in sys/types.h"])
AC_MSG_RESULT([$ijg_size_t_ok])
if test "$ijg_size_t_ok" != yes; then
AC_CHECK_HEADER([sys/types.h],
[AC_DEFINE([NEED_SYS_TYPES_H], [1],
[Need to include <sys/types.h> in order to obtain size_t.])
AC_EGREP_CPP([size_t], [#include <sys/types.h>],
[ijg_size_t_ok="size_t is in sys/types.h"],
[ijg_size_t_ok=no])],
[ijg_size_t_ok=no])
AC_MSG_RESULT([$ijg_size_t_ok])
if test "$ijg_size_t_ok" = no; then
AC_MSG_WARN([Type size_t is not defined in any of the usual places.
Try putting '"typedef unsigned int size_t;"' in jconfig.h.])
fi
fi
# Check compiler characteristics
AC_MSG_CHECKING([for type unsigned char])
AC_TRY_COMPILE([], [ unsigned char un_char; ],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_UNSIGNED_CHAR], [1],
[Compiler supports 'unsigned char'.])],
[AC_MSG_RESULT(no)])
AC_MSG_CHECKING([for type unsigned short])
AC_TRY_COMPILE([], [ unsigned short un_short; ],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_UNSIGNED_SHORT], [1],
[Compiler supports 'unsigned short'.])],
[AC_MSG_RESULT(no)])
AC_MSG_CHECKING([for type void])
AC_TRY_COMPILE([
/* Caution: a C++ compiler will insist on valid prototypes */
typedef void * void_ptr; /* check void * */
#ifdef HAVE_PROTOTYPES /* check ptr to function returning void */
typedef void (*void_func) (int a, int b);
#else
typedef void (*void_func) ();
#endif
#ifdef HAVE_PROTOTYPES /* check void function result */
void test3function (void_ptr arg1, void_func arg2)
#else
void test3function (arg1, arg2)
void_ptr arg1;
void_func arg2;
#endif
{
char * locptr = (char *) arg1; /* check casting to and from void * */
arg1 = (void *) locptr;
(*arg2) (1, 2); /* check call of fcn returning void */
}
], [ ],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
AC_DEFINE([void], [char],
[Define 'void' as 'char' for archaic compilers
that don't understand it.])])
AC_C_CONST
# Check for non-broken inline under various spellings
AC_MSG_CHECKING([for inline])
ijg_cv_inline=""
AC_TRY_COMPILE([], [} __inline__ int foo() { return 0; }
int bar() { return foo();], ijg_cv_inline="__inline__",
[AC_TRY_COMPILE(, [} __inline int foo() { return 0; }
int bar() { return foo();], ijg_cv_inline="__inline",
[AC_TRY_COMPILE(, [} inline int foo() { return 0; }
int bar() { return foo();], ijg_cv_inline="inline")])])
AC_MSG_RESULT($ijg_cv_inline)
AC_DEFINE_UNQUOTED([INLINE], [$ijg_cv_inline],
[How to obtain function inlining.])
# We cannot check for bogus warnings, but at least we can check for errors
AC_MSG_CHECKING([for broken incomplete types])
AC_TRY_COMPILE([ typedef struct undefined_structure * undef_struct_ptr; ],
[],
[AC_MSG_RESULT(ok)],
[AC_MSG_RESULT(broken)
AC_DEFINE([INCOMPLETE_TYPES_BROKEN], [1],
[Compiler does not support pointers to unspecified
structures.])])
# Test whether global names are unique to at least 15 chars
AC_MSG_CHECKING([for short external names])
AC_TRY_LINK([
int possibly_duplicate_function () { return 0; }
int possibly_dupli_function () { return 1; }
], [],
[AC_MSG_RESULT(ok)],
[AC_MSG_RESULT(short)
AC_DEFINE([NEED_SHORT_EXTERNAL_NAMES], [1],
[Linker requires that global names be unique in
first 15 characters.])])
# Run-time checks
AC_MSG_CHECKING([to see if char is signed])
AC_TRY_RUN([
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
#ifdef HAVE_PROTOTYPES
int is_char_signed (int arg)
#else
int is_char_signed (arg)
int arg;
#endif
{
if (arg == 189) { /* expected result for unsigned char */
return 0; /* type char is unsigned */
}
else if (arg != -67) { /* expected result for signed char */
printf("Hmm, it seems 'char' is not eight bits wide on your machine.\n");
printf("I fear the JPEG software will not work at all.\n\n");
}
return 1; /* assume char is signed otherwise */
}
char signed_char_check = (char) (-67);
int main() {
exit(is_char_signed((int) signed_char_check));
}], [AC_MSG_RESULT(no)
AC_DEFINE([CHAR_IS_UNSIGNED], [1],
[Characters are unsigned])],
[AC_MSG_RESULT(yes)],
[AC_MSG_WARN([Assuming that char is signed on target machine.
If it is unsigned, this will be a little bit inefficient.])
])
AC_MSG_CHECKING([to see if right shift is signed])
AC_TRY_RUN([
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
#ifdef HAVE_PROTOTYPES
int is_shifting_signed (long arg)
#else
int is_shifting_signed (arg)
long arg;
#endif
/* See whether right-shift on a long is signed or not. */
{
long res = arg >> 4;
if (res == -0x7F7E80CL) { /* expected result for signed shift */
return 1; /* right shift is signed */
}
/* see if unsigned-shift hack will fix it. */
/* we can't just test exact value since it depends on width of long... */
res |= (~0L) << (32-4);
if (res == -0x7F7E80CL) { /* expected result now? */
return 0; /* right shift is unsigned */
}
printf("Right shift isn't acting as I expect it to.\n");
printf("I fear the JPEG software will not work at all.\n\n");
return 0; /* try it with unsigned anyway */
}
int main() {
exit(is_shifting_signed(-0x7F7E80B1L));
}],
[AC_MSG_RESULT(no)
AC_DEFINE([RIGHT_SHIFT_IS_UNSIGNED], [1],
[Broken compiler shifts signed values as an unsigned shift.])],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(Assuming that right shift is signed on target machine.)])
AC_MSG_CHECKING([to see if fopen accepts b spec])
AC_TRY_RUN([
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
int main() {
if (fopen("conftestdata", "wb") != NULL)
exit(0);
exit(1);
}],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
AC_DEFINE([DONT_USE_B_MODE], [1],
[Don't open files in binary mode.])],
[AC_MSG_RESULT(Assuming that it does.)])
# Configure libtool
AC_LIBTOOL_WIN32_DLL
AC_PROG_LIBTOOL
# Select memory manager depending on user input.
# If no "-enable-maxmem", use jmemnobs
MEMORYMGR='jmemnobs'
MAXMEM="no"
AC_ARG_ENABLE([maxmem],
[ --enable-maxmem[=N] enable use of temp files, set max mem usage to N MB],
[MAXMEM="$enableval"])
dnl [# support --with-maxmem for backwards compatibility with IJG V5.]
dnl AC_ARG_WITH(maxmem, , MAXMEM="$withval")
if test "x$MAXMEM" = xyes; then
MAXMEM=1
fi
if test "x$MAXMEM" != xno; then
if test -n "`echo $MAXMEM | sed 's/[[0-9]]//g'`"; then
AC_MSG_ERROR(non-numeric argument to --enable-maxmem)
fi
DEFAULTMAXMEM=`expr $MAXMEM \* 1048576`
AC_DEFINE_UNQUOTED([DEFAULT_MAX_MEM], [${DEFAULTMAXMEM}],
[Maximum data space library will allocate.])
AC_MSG_CHECKING([for 'tmpfile()'])
AC_TRY_LINK([#include <stdio.h>], [ FILE * tfile = tmpfile(); ],
[AC_MSG_RESULT(yes)
MEMORYMGR='jmemansi'],
[AC_MSG_RESULT(no)
dnl if tmpfile is not present, must use jmemname.
MEMORYMGR='jmemname'
# Test for the need to remove temporary files using a signal handler
# (for cjpeg/djpeg)
AC_DEFINE([NEED_SIGNAL_CATCHER], [1],
[Need signal handler to clean up temporary files.])
AC_MSG_CHECKING([for 'mktemp()'])
AC_TRY_LINK([], [ char fname[80]; mktemp(fname); ],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
AC_DEFINE([NO_MKTEMP], [1],
[The mktemp() function is not available.])])])
fi
AC_SUBST([MEMORYMGR])
# Extract the library version IDs from jpeglib.h.
AC_MSG_CHECKING([libjpeg version number])
[major=`sed -ne 's/^#define JPEG_LIB_VERSION_MAJOR *\([0-9][0-9]*\).*$/\1/p' $srcdir/jpeglib.h`
minor=`sed -ne 's/^#define JPEG_LIB_VERSION_MINOR *\([0-9][0-9]*\).*$/\1/p' $srcdir/jpeglib.h`]
AC_SUBST([JPEG_LIB_VERSION],
[`expr $major + $minor`:0:$minor])
AC_MSG_RESULT([$JPEG_LIB_VERSION])
AC_CONFIG_FILES([Makefile])
AC_OUTPUT
libs/jpeg-9/depcomp
-790
View File
@@ -1,790 +0,0 @@
#! /bin/sh
# depcomp - compile a program generating dependencies as side-effects
scriptversion=2012-10-18.11; # UTC
# Copyright (C) 1999-2013 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
case $1 in
'')
echo "$0: No command. Try '$0 --help' for more information." 1>&2
exit 1;
;;
-h | --h*)
cat <<\EOF
Usage: depcomp [--help] [--version] PROGRAM [ARGS]
Run PROGRAMS ARGS to compile a file, generating dependencies
as side-effects.
Environment variables:
depmode Dependency tracking mode.
source Source file read by 'PROGRAMS ARGS'.
object Object file output by 'PROGRAMS ARGS'.
DEPDIR directory where to store dependencies.
depfile Dependency file to output.
tmpdepfile Temporary file to use when outputting dependencies.
libtool Whether libtool is used (yes/no).
Report bugs to <bug-automake@gnu.org>.
EOF
exit $?
;;
-v | --v*)
echo "depcomp $scriptversion"
exit $?
;;
esac
# Get the directory component of the given path, and save it in the
# global variables '$dir'. Note that this directory component will
# be either empty or ending with a '/' character. This is deliberate.
set_dir_from ()
{
case $1 in
*/*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
*) dir=;;
esac
}
# Get the suffix-stripped basename of the given path, and save it the
# global variable '$base'.
set_base_from ()
{
base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
}
# If no dependency file was actually created by the compiler invocation,
# we still have to create a dummy depfile, to avoid errors with the
# Makefile "include basename.Plo" scheme.
make_dummy_depfile ()
{
echo "#dummy" > "$depfile"
}
# Factor out some common post-processing of the generated depfile.
# Requires the auxiliary global variable '$tmpdepfile' to be set.
aix_post_process_depfile ()
{
# If the compiler actually managed to produce a dependency file,
# post-process it.
if test -f "$tmpdepfile"; then
# Each line is of the form 'foo.o: dependency.h'.
# Do two passes, one to just change these to
# $object: dependency.h
# and one to simply output
# dependency.h:
# which is needed to avoid the deleted-header problem.
{ sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
} > "$depfile"
rm -f "$tmpdepfile"
else
make_dummy_depfile
fi
}
# A tabulation character.
tab=' '
# A newline character.
nl='
'
# Character ranges might be problematic outside the C locale.
# These definitions help.
upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
lower=abcdefghijklmnopqrstuvwxyz
digits=0123456789
alpha=${upper}${lower}
if test -z "$depmode" || test -z "$source" || test -z "$object"; then
echo "depcomp: Variables source, object and depmode must be set" 1>&2
exit 1
fi
# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
depfile=${depfile-`echo "$object" |
sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
rm -f "$tmpdepfile"
# Avoid interferences from the environment.
gccflag= dashmflag=
# Some modes work just like other modes, but use different flags. We
# parameterize here, but still list the modes in the big case below,
# to make depend.m4 easier to write. Note that we *cannot* use a case
# here, because this file can only contain one case statement.
if test "$depmode" = hp; then
# HP compiler uses -M and no extra arg.
gccflag=-M
depmode=gcc
fi
if test "$depmode" = dashXmstdout; then
# This is just like dashmstdout with a different argument.
dashmflag=-xM
depmode=dashmstdout
fi
cygpath_u="cygpath -u -f -"
if test "$depmode" = msvcmsys; then
# This is just like msvisualcpp but w/o cygpath translation.
# Just convert the backslash-escaped backslashes to single forward
# slashes to satisfy depend.m4
cygpath_u='sed s,\\\\,/,g'
depmode=msvisualcpp
fi
if test "$depmode" = msvc7msys; then
# This is just like msvc7 but w/o cygpath translation.
# Just convert the backslash-escaped backslashes to single forward
# slashes to satisfy depend.m4
cygpath_u='sed s,\\\\,/,g'
depmode=msvc7
fi
if test "$depmode" = xlc; then
# IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
gccflag=-qmakedep=gcc,-MF
depmode=gcc
fi
case "$depmode" in
gcc3)
## gcc 3 implements dependency tracking that does exactly what
## we want. Yay! Note: for some reason libtool 1.4 doesn't like
## it if -MD -MP comes after the -MF stuff. Hmm.
## Unfortunately, FreeBSD c89 acceptance of flags depends upon
## the command line argument order; so add the flags where they
## appear in depend2.am. Note that the slowdown incurred here
## affects only configure: in makefiles, %FASTDEP% shortcuts this.
for arg
do
case $arg in
-c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
*) set fnord "$@" "$arg" ;;
esac
shift # fnord
shift # $arg
done
"$@"
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
mv "$tmpdepfile" "$depfile"
;;
gcc)
## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
## (see the conditional assignment to $gccflag above).
## There are various ways to get dependency output from gcc. Here's
## why we pick this rather obscure method:
## - Don't want to use -MD because we'd like the dependencies to end
## up in a subdir. Having to rename by hand is ugly.
## (We might end up doing this anyway to support other compilers.)
## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
## -MM, not -M (despite what the docs say). Also, it might not be
## supported by the other compilers which use the 'gcc' depmode.
## - Using -M directly means running the compiler twice (even worse
## than renaming).
if test -z "$gccflag"; then
gccflag=-MD,
fi
"$@" -Wp,"$gccflag$tmpdepfile"
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
echo "$object : \\" > "$depfile"
# The second -e expression handles DOS-style file names with drive
# letters.
sed -e 's/^[^:]*: / /' \
-e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
## This next piece of magic avoids the "deleted header file" problem.
## The problem is that when a header file which appears in a .P file
## is deleted, the dependency causes make to die (because there is
## typically no way to rebuild the header). We avoid this by adding
## dummy dependencies for each header file. Too bad gcc doesn't do
## this for us directly.
## Some versions of gcc put a space before the ':'. On the theory
## that the space means something, we add a space to the output as
## well. hp depmode also adds that space, but also prefixes the VPATH
## to the object. Take care to not repeat it in the output.
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
sgi)
if test "$libtool" = yes; then
"$@" "-Wp,-MDupdate,$tmpdepfile"
else
"$@" -MDupdate "$tmpdepfile"
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
echo "$object : \\" > "$depfile"
# Clip off the initial element (the dependent). Don't try to be
# clever and replace this with sed code, as IRIX sed won't handle
# lines with more than a fixed number of characters (4096 in
# IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
# the IRIX cc adds comments like '#:fec' to the end of the
# dependency line.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
| tr "$nl" ' ' >> "$depfile"
echo >> "$depfile"
# The second pass generates a dummy entry for each header file.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
>> "$depfile"
else
make_dummy_depfile
fi
rm -f "$tmpdepfile"
;;
xlc)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
aix)
# The C for AIX Compiler uses -M and outputs the dependencies
# in a .u file. In older versions, this file always lives in the
# current directory. Also, the AIX compiler puts '$object:' at the
# start of each line; $object doesn't have directory information.
# Version 6 uses the directory in both cases.
set_dir_from "$object"
set_base_from "$object"
if test "$libtool" = yes; then
tmpdepfile1=$dir$base.u
tmpdepfile2=$base.u
tmpdepfile3=$dir.libs/$base.u
"$@" -Wc,-M
else
tmpdepfile1=$dir$base.u
tmpdepfile2=$dir$base.u
tmpdepfile3=$dir$base.u
"$@" -M
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
do
test -f "$tmpdepfile" && break
done
aix_post_process_depfile
;;
tcc)
# tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
# FIXME: That version still under development at the moment of writing.
# Make that this statement remains true also for stable, released
# versions.
# It will wrap lines (doesn't matter whether long or short) with a
# trailing '\', as in:
#
# foo.o : \
# foo.c \
# foo.h \
#
# It will put a trailing '\' even on the last line, and will use leading
# spaces rather than leading tabs (at least since its commit 0394caf7
# "Emit spaces for -MD").
"$@" -MD -MF "$tmpdepfile"
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
# Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
# We have to change lines of the first kind to '$object: \'.
sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
# And for each line of the second kind, we have to emit a 'dep.h:'
# dummy dependency, to avoid the deleted-header problem.
sed -n -e 's|^ *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
rm -f "$tmpdepfile"
;;
## The order of this option in the case statement is important, since the
## shell code in configure will try each of these formats in the order
## listed in this file. A plain '-MD' option would be understood by many
## compilers, so we must ensure this comes after the gcc and icc options.
pgcc)
# Portland's C compiler understands '-MD'.
# Will always output deps to 'file.d' where file is the root name of the
# source file under compilation, even if file resides in a subdirectory.
# The object file name does not affect the name of the '.d' file.
# pgcc 10.2 will output
# foo.o: sub/foo.c sub/foo.h
# and will wrap long lines using '\' :
# foo.o: sub/foo.c ... \
# sub/foo.h ... \
# ...
set_dir_from "$object"
# Use the source, not the object, to determine the base name, since
# that's sadly what pgcc will do too.
set_base_from "$source"
tmpdepfile=$base.d
# For projects that build the same source file twice into different object
# files, the pgcc approach of using the *source* file root name can cause
# problems in parallel builds. Use a locking strategy to avoid stomping on
# the same $tmpdepfile.
lockdir=$base.d-lock
trap "
echo '$0: caught signal, cleaning up...' >&2
rmdir '$lockdir'
exit 1
" 1 2 13 15
numtries=100
i=$numtries
while test $i -gt 0; do
# mkdir is a portable test-and-set.
if mkdir "$lockdir" 2>/dev/null; then
# This process acquired the lock.
"$@" -MD
stat=$?
# Release the lock.
rmdir "$lockdir"
break
else
# If the lock is being held by a different process, wait
# until the winning process is done or we timeout.
while test -d "$lockdir" && test $i -gt 0; do
sleep 1
i=`expr $i - 1`
done
fi
i=`expr $i - 1`
done
trap - 1 2 13 15
if test $i -le 0; then
echo "$0: failed to acquire lock after $numtries attempts" >&2
echo "$0: check lockdir '$lockdir'" >&2
exit 1
fi
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
# Each line is of the form `foo.o: dependent.h',
# or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
# Do two passes, one to just change these to
# `$object: dependent.h' and one to simply `dependent.h:'.
sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process this invocation
# correctly. Breaking it into two sed invocations is a workaround.
sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp2)
# The "hp" stanza above does not work with aCC (C++) and HP's ia64
# compilers, which have integrated preprocessors. The correct option
# to use with these is +Maked; it writes dependencies to a file named
# 'foo.d', which lands next to the object file, wherever that
# happens to be.
# Much of this is similar to the tru64 case; see comments there.
set_dir_from "$object"
set_base_from "$object"
if test "$libtool" = yes; then
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir.libs/$base.d
"$@" -Wc,+Maked
else
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir$base.d
"$@" +Maked
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile1" "$tmpdepfile2"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
do
test -f "$tmpdepfile" && break
done
if test -f "$tmpdepfile"; then
sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
# Add 'dependent.h:' lines.
sed -ne '2,${
s/^ *//
s/ \\*$//
s/$/:/
p
}' "$tmpdepfile" >> "$depfile"
else
make_dummy_depfile
fi
rm -f "$tmpdepfile" "$tmpdepfile2"
;;
tru64)
# The Tru64 compiler uses -MD to generate dependencies as a side
# effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
# At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
# dependencies in 'foo.d' instead, so we check for that too.
# Subdirectories are respected.
set_dir_from "$object"
set_base_from "$object"
if test "$libtool" = yes; then
# Libtool generates 2 separate objects for the 2 libraries. These
# two compilations output dependencies in $dir.libs/$base.o.d and
# in $dir$base.o.d. We have to check for both files, because
# one of the two compilations can be disabled. We should prefer
# $dir$base.o.d over $dir.libs/$base.o.d because the latter is
# automatically cleaned when .libs/ is deleted, while ignoring
# the former would cause a distcleancheck panic.
tmpdepfile1=$dir$base.o.d # libtool 1.5
tmpdepfile2=$dir.libs/$base.o.d # Likewise.
tmpdepfile3=$dir.libs/$base.d # Compaq CCC V6.2-504
"$@" -Wc,-MD
else
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir$base.d
tmpdepfile3=$dir$base.d
"$@" -MD
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
do
test -f "$tmpdepfile" && break
done
# Same post-processing that is required for AIX mode.
aix_post_process_depfile
;;
msvc7)
if test "$libtool" = yes; then
showIncludes=-Wc,-showIncludes
else
showIncludes=-showIncludes
fi
"$@" $showIncludes > "$tmpdepfile"
stat=$?
grep -v '^Note: including file: ' "$tmpdepfile"
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
echo "$object : \\" > "$depfile"
# The first sed program below extracts the file names and escapes
# backslashes for cygpath. The second sed program outputs the file
# name when reading, but also accumulates all include files in the
# hold buffer in order to output them again at the end. This only
# works with sed implementations that can handle large buffers.
sed < "$tmpdepfile" -n '
/^Note: including file: *\(.*\)/ {
s//\1/
s/\\/\\\\/g
p
}' | $cygpath_u | sort -u | sed -n '
s/ /\\ /g
s/\(.*\)/'"$tab"'\1 \\/p
s/.\(.*\) \\/\1:/
H
$ {
s/.*/'"$tab"'/
G
p
}' >> "$depfile"
rm -f "$tmpdepfile"
;;
msvc7msys)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
#nosideeffect)
# This comment above is used by automake to tell side-effect
# dependency tracking mechanisms from slower ones.
dashmstdout)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout, regardless of -o.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
# Remove '-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
test -z "$dashmflag" && dashmflag=-M
# Require at least two characters before searching for ':'
# in the target name. This is to cope with DOS-style filenames:
# a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
"$@" $dashmflag |
sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
rm -f "$depfile"
cat < "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process this sed invocation
# correctly. Breaking it into two sed invocations is a workaround.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
dashXmstdout)
# This case only exists to satisfy depend.m4. It is never actually
# run, as this mode is specially recognized in the preamble.
exit 1
;;
makedepend)
"$@" || exit $?
# Remove any Libtool call
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
# X makedepend
shift
cleared=no eat=no
for arg
do
case $cleared in
no)
set ""; shift
cleared=yes ;;
esac
if test $eat = yes; then
eat=no
continue
fi
case "$arg" in
-D*|-I*)
set fnord "$@" "$arg"; shift ;;
# Strip any option that makedepend may not understand. Remove
# the object too, otherwise makedepend will parse it as a source file.
-arch)
eat=yes ;;
-*|$object)
;;
*)
set fnord "$@" "$arg"; shift ;;
esac
done
obj_suffix=`echo "$object" | sed 's/^.*\././'`
touch "$tmpdepfile"
${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
rm -f "$depfile"
# makedepend may prepend the VPATH from the source file name to the object.
# No need to regex-escape $object, excess matching of '.' is harmless.
sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process the last invocation
# correctly. Breaking it into two sed invocations is a workaround.
sed '1,2d' "$tmpdepfile" \
| tr ' ' "$nl" \
| sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile" "$tmpdepfile".bak
;;
cpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
# Remove '-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
"$@" -E \
| sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
-e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
| sed '$ s: \\$::' > "$tmpdepfile"
rm -f "$depfile"
echo "$object : \\" > "$depfile"
cat < "$tmpdepfile" >> "$depfile"
sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
msvisualcpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
IFS=" "
for arg
do
case "$arg" in
-o)
shift
;;
$object)
shift
;;
"-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
set fnord "$@"
shift
shift
;;
*)
set fnord "$@" "$arg"
shift
shift
;;
esac
done
"$@" -E 2>/dev/null |
sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
rm -f "$depfile"
echo "$object : \\" > "$depfile"
sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
echo "$tab" >> "$depfile"
sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
rm -f "$tmpdepfile"
;;
msvcmsys)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
none)
exec "$@"
;;
*)
echo "Unknown depmode $depmode" 1>&2
exit 1
;;
esac
exit 0
# Local Variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC"
# time-stamp-end: "; # UTC"
# End:
libs/jpeg-9/djpeg.1
-252
View File
@@ -1,252 +0,0 @@
.TH DJPEG 1 "3 October 2009"
.SH NAME
djpeg \- decompress a JPEG file to an image file
.SH SYNOPSIS
.B djpeg
[
.I options
]
[
.I filename
]
.LP
.SH DESCRIPTION
.LP
.B djpeg
decompresses the named JPEG file, or the standard input if no file is named,
and produces an image file on the standard output. PBMPLUS (PPM/PGM), BMP,
GIF, Targa, or RLE (Utah Raster Toolkit) output format can be selected.
(RLE is supported only if the URT library is available.)
.SH OPTIONS
All switch names may be abbreviated; for example,
.B \-grayscale
may be written
.B \-gray
or
.BR \-gr .
Most of the "basic" switches can be abbreviated to as little as one letter.
Upper and lower case are equivalent (thus
.B \-BMP
is the same as
.BR \-bmp ).
British spellings are also accepted (e.g.,
.BR \-greyscale ),
though for brevity these are not mentioned below.
.PP
The basic switches are:
.TP
.BI \-colors " N"
Reduce image to at most N colors. This reduces the number of colors used in
the output image, so that it can be displayed on a colormapped display or
stored in a colormapped file format. For example, if you have an 8-bit
display, you'd need to reduce to 256 or fewer colors.
.TP
.BI \-quantize " N"
Same as
.BR \-colors .
.B \-colors
is the recommended name,
.B \-quantize
is provided only for backwards compatibility.
.TP
.B \-fast
Select recommended processing options for fast, low quality output. (The
default options are chosen for highest quality output.) Currently, this is
equivalent to \fB\-dct fast \-nosmooth \-onepass \-dither ordered\fR.
.TP
.B \-grayscale
Force gray-scale output even if JPEG file is color. Useful for viewing on
monochrome displays; also,
.B djpeg
runs noticeably faster in this mode.
.TP
.BI \-scale " M/N"
Scale the output image by a factor M/N. Currently supported scale factors are
M/N with all M from 1 to 16, where N is the source DCT size, which is 8 for
baseline JPEG. If the /N part is omitted, then M specifies the DCT scaled
size to be applied on the given input. For baseline JPEG this is equivalent
to M/8 scaling, since the source DCT size for baseline JPEG is 8.
Scaling is handy if the image is larger than your screen; also,
.B djpeg
runs much faster when scaling down the output.
.TP
.B \-bmp
Select BMP output format (Windows flavor). 8-bit colormapped format is
emitted if
.B \-colors
or
.B \-grayscale
is specified, or if the JPEG file is gray-scale; otherwise, 24-bit full-color
format is emitted.
.TP
.B \-gif
Select GIF output format. Since GIF does not support more than 256 colors,
.B \-colors 256
is assumed (unless you specify a smaller number of colors).
.TP
.B \-os2
Select BMP output format (OS/2 1.x flavor). 8-bit colormapped format is
emitted if
.B \-colors
or
.B \-grayscale
is specified, or if the JPEG file is gray-scale; otherwise, 24-bit full-color
format is emitted.
.TP
.B \-pnm
Select PBMPLUS (PPM/PGM) output format (this is the default format).
PGM is emitted if the JPEG file is gray-scale or if
.B \-grayscale
is specified; otherwise PPM is emitted.
.TP
.B \-rle
Select RLE output format. (Requires URT library.)
.TP
.B \-targa
Select Targa output format. Gray-scale format is emitted if the JPEG file is
gray-scale or if
.B \-grayscale
is specified; otherwise, colormapped format is emitted if
.B \-colors
is specified; otherwise, 24-bit full-color format is emitted.
.PP
Switches for advanced users:
.TP
.B \-dct int
Use integer DCT method (default).
.TP
.B \-dct fast
Use fast integer DCT (less accurate).
.TP
.B \-dct float
Use floating-point DCT method.
The float method is very slightly more accurate than the int method, but is
much slower unless your machine has very fast floating-point hardware. Also
note that results of the floating-point method may vary slightly across
machines, while the integer methods should give the same results everywhere.
The fast integer method is much less accurate than the other two.
.TP
.B \-dither fs
Use Floyd-Steinberg dithering in color quantization.
.TP
.B \-dither ordered
Use ordered dithering in color quantization.
.TP
.B \-dither none
Do not use dithering in color quantization.
By default, Floyd-Steinberg dithering is applied when quantizing colors; this
is slow but usually produces the best results. Ordered dither is a compromise
between speed and quality; no dithering is fast but usually looks awful. Note
that these switches have no effect unless color quantization is being done.
Ordered dither is only available in
.B \-onepass
mode.
.TP
.BI \-map " file"
Quantize to the colors used in the specified image file. This is useful for
producing multiple files with identical color maps, or for forcing a
predefined set of colors to be used. The
.I file
must be a GIF or PPM file. This option overrides
.B \-colors
and
.BR \-onepass .
.TP
.B \-nosmooth
Don't use high-quality upsampling.
.TP
.B \-onepass
Use one-pass instead of two-pass color quantization. The one-pass method is
faster and needs less memory, but it produces a lower-quality image.
.B \-onepass
is ignored unless you also say
.B \-colors
.IR N .
Also, the one-pass method is always used for gray-scale output (the two-pass
method is no improvement then).
.TP
.BI \-maxmemory " N"
Set limit for amount of memory to use in processing large images. Value is
in thousands of bytes, or millions of bytes if "M" is attached to the
number. For example,
.B \-max 4m
selects 4000000 bytes. If more space is needed, temporary files will be used.
.TP
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
give more output. Also, version information is printed at startup.
.TP
.B \-debug
Same as
.BR \-verbose .
.SH EXAMPLES
.LP
This example decompresses the JPEG file foo.jpg, quantizes it to
256 colors, and saves the output in 8-bit BMP format in foo.bmp:
.IP
.B djpeg \-colors 256 \-bmp
.I foo.jpg
.B >
.I foo.bmp
.SH HINTS
To get a quick preview of an image, use the
.B \-grayscale
and/or
.B \-scale
switches.
.B \-grayscale \-scale 1/8
is the fastest case.
.PP
Several options are available that trade off image quality to gain speed.
.B \-fast
turns on the recommended settings.
.PP
.B \-dct fast
and/or
.B \-nosmooth
gain speed at a small sacrifice in quality.
When producing a color-quantized image,
.B \-onepass \-dither ordered
is fast but much lower quality than the default behavior.
.B \-dither none
may give acceptable results in two-pass mode, but is seldom tolerable in
one-pass mode.
.PP
If you are fortunate enough to have very fast floating point hardware,
\fB\-dct float\fR may be even faster than \fB\-dct fast\fR. But on most
machines \fB\-dct float\fR is slower than \fB\-dct int\fR; in this case it is
not worth using, because its theoretical accuracy advantage is too small to be
significant in practice.
.SH ENVIRONMENT
.TP
.B JPEGMEM
If this environment variable is set, its value is the default memory limit.
The value is specified as described for the
.B \-maxmemory
switch.
.B JPEGMEM
overrides the default value specified when the program was compiled, and
itself is overridden by an explicit
.BR \-maxmemory .
.SH SEE ALSO
.BR cjpeg (1),
.BR jpegtran (1),
.BR rdjpgcom (1),
.BR wrjpgcom (1)
.br
.BR ppm (5),
.BR pgm (5)
.br
Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
.SH AUTHOR
Independent JPEG Group
.SH BUGS
To avoid the Unisys LZW patent,
.B djpeg
produces uncompressed GIF files. These are larger than they should be, but
are readable by standard GIF decoders.
libs/jpeg-9/djpeg.c
-617
View File
@@ -1,617 +0,0 @@
/*
* djpeg.c
*
* Copyright (C) 1991-1997, Thomas G. Lane.
* Modified 2009-2013 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains a command-line user interface for the JPEG decompressor.
* It should work on any system with Unix- or MS-DOS-style command lines.
*
* Two different command line styles are permitted, depending on the
* compile-time switch TWO_FILE_COMMANDLINE:
* djpeg [options] inputfile outputfile
* djpeg [options] [inputfile]
* In the second style, output is always to standard output, which you'd
* normally redirect to a file or pipe to some other program. Input is
* either from a named file or from standard input (typically redirected).
* The second style is convenient on Unix but is unhelpful on systems that
* don't support pipes. Also, you MUST use the first style if your system
* doesn't do binary I/O to stdin/stdout.
* To simplify script writing, the "-outfile" switch is provided. The syntax
* djpeg [options] -outfile outputfile inputfile
* works regardless of which command line style is used.
*/
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include "jversion.h" /* for version message */
#include <ctype.h> /* to declare isprint() */
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
#ifdef __MWERKS__
#include <SIOUX.h> /* Metrowerks needs this */
#include <console.h> /* ... and this */
#endif
#ifdef THINK_C
#include <console.h> /* Think declares it here */
#endif
#endif
/* Create the add-on message string table. */
#define JMESSAGE(code,string) string ,
static const char * const cdjpeg_message_table[] = {
#include "cderror.h"
NULL
};
/*
* This list defines the known output image formats
* (not all of which need be supported by a given version).
* You can change the default output format by defining DEFAULT_FMT;
* indeed, you had better do so if you undefine PPM_SUPPORTED.
*/
typedef enum {
FMT_BMP, /* BMP format (Windows flavor) */
FMT_GIF, /* GIF format */
FMT_OS2, /* BMP format (OS/2 flavor) */
FMT_PPM, /* PPM/PGM (PBMPLUS formats) */
FMT_RLE, /* RLE format */
FMT_TARGA, /* Targa format */
FMT_TIFF /* TIFF format */
} IMAGE_FORMATS;
#ifndef DEFAULT_FMT /* so can override from CFLAGS in Makefile */
#define DEFAULT_FMT FMT_PPM
#endif
static IMAGE_FORMATS requested_fmt;
/*
* Argument-parsing code.
* The switch parser is designed to be useful with DOS-style command line
* syntax, ie, intermixed switches and file names, where only the switches
* to the left of a given file name affect processing of that file.
* The main program in this file doesn't actually use this capability...
*/
static const char * progname; /* program name for error messages */
static char * outfilename; /* for -outfile switch */
LOCAL(void)
usage (void)
/* complain about bad command line */
{
fprintf(stderr, "usage: %s [switches] ", progname);
#ifdef TWO_FILE_COMMANDLINE
fprintf(stderr, "inputfile outputfile\n");
#else
fprintf(stderr, "[inputfile]\n");
#endif
fprintf(stderr, "Switches (names may be abbreviated):\n");
fprintf(stderr, " -colors N Reduce image to no more than N colors\n");
fprintf(stderr, " -fast Fast, low-quality processing\n");
fprintf(stderr, " -grayscale Force grayscale output\n");
#ifdef IDCT_SCALING_SUPPORTED
fprintf(stderr, " -scale M/N Scale output image by fraction M/N, eg, 1/8\n");
#endif
#ifdef BMP_SUPPORTED
fprintf(stderr, " -bmp Select BMP output format (Windows style)%s\n",
(DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
#endif
#ifdef GIF_SUPPORTED
fprintf(stderr, " -gif Select GIF output format%s\n",
(DEFAULT_FMT == FMT_GIF ? " (default)" : ""));
#endif
#ifdef BMP_SUPPORTED
fprintf(stderr, " -os2 Select BMP output format (OS/2 style)%s\n",
(DEFAULT_FMT == FMT_OS2 ? " (default)" : ""));
#endif
#ifdef PPM_SUPPORTED
fprintf(stderr, " -pnm Select PBMPLUS (PPM/PGM) output format%s\n",
(DEFAULT_FMT == FMT_PPM ? " (default)" : ""));
#endif
#ifdef RLE_SUPPORTED
fprintf(stderr, " -rle Select Utah RLE output format%s\n",
(DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
#endif
#ifdef TARGA_SUPPORTED
fprintf(stderr, " -targa Select Targa output format%s\n",
(DEFAULT_FMT == FMT_TARGA ? " (default)" : ""));
#endif
fprintf(stderr, "Switches for advanced users:\n");
#ifdef DCT_ISLOW_SUPPORTED
fprintf(stderr, " -dct int Use integer DCT method%s\n",
(JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
#endif
#ifdef DCT_IFAST_SUPPORTED
fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n",
(JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
#endif
#ifdef DCT_FLOAT_SUPPORTED
fprintf(stderr, " -dct float Use floating-point DCT method%s\n",
(JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
#endif
fprintf(stderr, " -dither fs Use F-S dithering (default)\n");
fprintf(stderr, " -dither none Don't use dithering in quantization\n");
fprintf(stderr, " -dither ordered Use ordered dither (medium speed, quality)\n");
#ifdef QUANT_2PASS_SUPPORTED
fprintf(stderr, " -map FILE Map to colors used in named image file\n");
#endif
fprintf(stderr, " -nosmooth Don't use high-quality upsampling\n");
#ifdef QUANT_1PASS_SUPPORTED
fprintf(stderr, " -onepass Use 1-pass quantization (fast, low quality)\n");
#endif
fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
fprintf(stderr, " -outfile name Specify name for output file\n");
fprintf(stderr, " -verbose or -debug Emit debug output\n");
exit(EXIT_FAILURE);
}
LOCAL(int)
parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
int last_file_arg_seen, boolean for_real)
/* Parse optional switches.
* Returns argv[] index of first file-name argument (== argc if none).
* Any file names with indexes <= last_file_arg_seen are ignored;
* they have presumably been processed in a previous iteration.
* (Pass 0 for last_file_arg_seen on the first or only iteration.)
* for_real is FALSE on the first (dummy) pass; we may skip any expensive
* processing.
*/
{
int argn;
char * arg;
/* Set up default JPEG parameters. */
requested_fmt = DEFAULT_FMT; /* set default output file format */
outfilename = NULL;
cinfo->err->trace_level = 0;
/* Scan command line options, adjust parameters */
for (argn = 1; argn < argc; argn++) {
arg = argv[argn];
if (*arg != '-') {
/* Not a switch, must be a file name argument */
if (argn <= last_file_arg_seen) {
outfilename = NULL; /* -outfile applies to just one input file */
continue; /* ignore this name if previously processed */
}
break; /* else done parsing switches */
}
arg++; /* advance past switch marker character */
if (keymatch(arg, "bmp", 1)) {
/* BMP output format. */
requested_fmt = FMT_BMP;
} else if (keymatch(arg, "colors", 1) || keymatch(arg, "colours", 1) ||
keymatch(arg, "quantize", 1) || keymatch(arg, "quantise", 1)) {
/* Do color quantization. */
int val;
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%d", &val) != 1)
usage();
cinfo->desired_number_of_colors = val;
cinfo->quantize_colors = TRUE;
} else if (keymatch(arg, "dct", 2)) {
/* Select IDCT algorithm. */
if (++argn >= argc) /* advance to next argument */
usage();
if (keymatch(argv[argn], "int", 1)) {
cinfo->dct_method = JDCT_ISLOW;
} else if (keymatch(argv[argn], "fast", 2)) {
cinfo->dct_method = JDCT_IFAST;
} else if (keymatch(argv[argn], "float", 2)) {
cinfo->dct_method = JDCT_FLOAT;
} else
usage();
} else if (keymatch(arg, "dither", 2)) {
/* Select dithering algorithm. */
if (++argn >= argc) /* advance to next argument */
usage();
if (keymatch(argv[argn], "fs", 2)) {
cinfo->dither_mode = JDITHER_FS;
} else if (keymatch(argv[argn], "none", 2)) {
cinfo->dither_mode = JDITHER_NONE;
} else if (keymatch(argv[argn], "ordered", 2)) {
cinfo->dither_mode = JDITHER_ORDERED;
} else
usage();
} else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
/* Enable debug printouts. */
/* On first -d, print version identification */
static boolean printed_version = FALSE;
if (! printed_version) {
fprintf(stderr, "Independent JPEG Group's DJPEG, version %s\n%s\n",
JVERSION, JCOPYRIGHT);
printed_version = TRUE;
}
cinfo->err->trace_level++;
} else if (keymatch(arg, "fast", 1)) {
/* Select recommended processing options for quick-and-dirty output. */
cinfo->two_pass_quantize = FALSE;
cinfo->dither_mode = JDITHER_ORDERED;
if (! cinfo->quantize_colors) /* don't override an earlier -colors */
cinfo->desired_number_of_colors = 216;
cinfo->dct_method = JDCT_FASTEST;
cinfo->do_fancy_upsampling = FALSE;
} else if (keymatch(arg, "gif", 1)) {
/* GIF output format. */
requested_fmt = FMT_GIF;
} else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
/* Force monochrome output. */
cinfo->out_color_space = JCS_GRAYSCALE;
} else if (keymatch(arg, "map", 3)) {
/* Quantize to a color map taken from an input file. */
if (++argn >= argc) /* advance to next argument */
usage();
if (for_real) { /* too expensive to do twice! */
#ifdef QUANT_2PASS_SUPPORTED /* otherwise can't quantize to supplied map */
FILE * mapfile;
if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
exit(EXIT_FAILURE);
}
read_color_map(cinfo, mapfile);
fclose(mapfile);
cinfo->quantize_colors = TRUE;
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
}
} else if (keymatch(arg, "maxmemory", 3)) {
/* Maximum memory in Kb (or Mb with 'm'). */
long lval;
char ch = 'x';
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
usage();
if (ch == 'm' || ch == 'M')
lval *= 1000L;
cinfo->mem->max_memory_to_use = lval * 1000L;
} else if (keymatch(arg, "nosmooth", 3)) {
/* Suppress fancy upsampling. */
cinfo->do_fancy_upsampling = FALSE;
} else if (keymatch(arg, "onepass", 3)) {
/* Use fast one-pass quantization. */
cinfo->two_pass_quantize = FALSE;
} else if (keymatch(arg, "os2", 3)) {
/* BMP output format (OS/2 flavor). */
requested_fmt = FMT_OS2;
} else if (keymatch(arg, "outfile", 4)) {
/* Set output file name. */
if (++argn >= argc) /* advance to next argument */
usage();
outfilename = argv[argn]; /* save it away for later use */
} else if (keymatch(arg, "pnm", 1) || keymatch(arg, "ppm", 1)) {
/* PPM/PGM output format. */
requested_fmt = FMT_PPM;
} else if (keymatch(arg, "rle", 1)) {
/* RLE output format. */
requested_fmt = FMT_RLE;
} else if (keymatch(arg, "scale", 1)) {
/* Scale the output image by a fraction M/N. */
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%u/%u",
&cinfo->scale_num, &cinfo->scale_denom) < 1)
usage();
} else if (keymatch(arg, "targa", 1)) {
/* Targa output format. */
requested_fmt = FMT_TARGA;
} else {
usage(); /* bogus switch */
}
}
return argn; /* return index of next arg (file name) */
}
/*
* Marker processor for COM and interesting APPn markers.
* This replaces the library's built-in processor, which just skips the marker.
* We want to print out the marker as text, to the extent possible.
* Note this code relies on a non-suspending data source.
*/
LOCAL(unsigned int)
jpeg_getc (j_decompress_ptr cinfo)
/* Read next byte */
{
struct jpeg_source_mgr * datasrc = cinfo->src;
if (datasrc->bytes_in_buffer == 0) {
if (! (*datasrc->fill_input_buffer) (cinfo))
ERREXIT(cinfo, JERR_CANT_SUSPEND);
}
datasrc->bytes_in_buffer--;
return GETJOCTET(*datasrc->next_input_byte++);
}
METHODDEF(boolean)
print_text_marker (j_decompress_ptr cinfo)
{
boolean traceit = (cinfo->err->trace_level >= 1);
INT32 length;
unsigned int ch;
unsigned int lastch = 0;
length = jpeg_getc(cinfo) << 8;
length += jpeg_getc(cinfo);
length -= 2; /* discount the length word itself */
if (traceit) {
if (cinfo->unread_marker == JPEG_COM)
fprintf(stderr, "Comment, length %ld:\n", (long) length);
else /* assume it is an APPn otherwise */
fprintf(stderr, "APP%d, length %ld:\n",
cinfo->unread_marker - JPEG_APP0, (long) length);
}
while (--length >= 0) {
ch = jpeg_getc(cinfo);
if (traceit) {
/* Emit the character in a readable form.
* Nonprintables are converted to \nnn form,
* while \ is converted to \\.
* Newlines in CR, CR/LF, or LF form will be printed as one newline.
*/
if (ch == '\r') {
fprintf(stderr, "\n");
} else if (ch == '\n') {
if (lastch != '\r')
fprintf(stderr, "\n");
} else if (ch == '\\') {
fprintf(stderr, "\\\\");
} else if (isprint(ch)) {
putc(ch, stderr);
} else {
fprintf(stderr, "\\%03o", ch);
}
lastch = ch;
}
}
if (traceit)
fprintf(stderr, "\n");
return TRUE;
}
/*
* The main program.
*/
int
main (int argc, char **argv)
{
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
#ifdef PROGRESS_REPORT
struct cdjpeg_progress_mgr progress;
#endif
int file_index;
djpeg_dest_ptr dest_mgr = NULL;
FILE * input_file;
FILE * output_file;
JDIMENSION num_scanlines;
/* On Mac, fetch a command line. */
#ifdef USE_CCOMMAND
argc = ccommand(&argv);
#endif
progname = argv[0];
if (progname == NULL || progname[0] == 0)
progname = "djpeg"; /* in case C library doesn't provide it */
/* Initialize the JPEG decompression object with default error handling. */
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_decompress(&cinfo);
/* Add some application-specific error messages (from cderror.h) */
jerr.addon_message_table = cdjpeg_message_table;
jerr.first_addon_message = JMSG_FIRSTADDONCODE;
jerr.last_addon_message = JMSG_LASTADDONCODE;
/* Insert custom marker processor for COM and APP12.
* APP12 is used by some digital camera makers for textual info,
* so we provide the ability to display it as text.
* If you like, additional APPn marker types can be selected for display,
* but don't try to override APP0 or APP14 this way (see libjpeg.doc).
*/
jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker);
jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker);
/* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
enable_signal_catcher((j_common_ptr) &cinfo);
#endif
/* Scan command line to find file names. */
/* It is convenient to use just one switch-parsing routine, but the switch
* values read here are ignored; we will rescan the switches after opening
* the input file.
* (Exception: tracing level set here controls verbosity for COM markers
* found during jpeg_read_header...)
*/
file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
#ifdef TWO_FILE_COMMANDLINE
/* Must have either -outfile switch or explicit output file name */
if (outfilename == NULL) {
if (file_index != argc-2) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
usage();
}
outfilename = argv[file_index+1];
} else {
if (file_index != argc-1) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
usage();
}
}
#else
/* Unix style: expect zero or one file name */
if (file_index < argc-1) {
fprintf(stderr, "%s: only one input file\n", progname);
usage();
}
#endif /* TWO_FILE_COMMANDLINE */
/* Open the input file. */
if (file_index < argc) {
if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]);
exit(EXIT_FAILURE);
}
} else {
/* default input file is stdin */
input_file = read_stdin();
}
/* Open the output file. */
if (outfilename != NULL) {
if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
exit(EXIT_FAILURE);
}
} else {
/* default output file is stdout */
output_file = write_stdout();
}
#ifdef PROGRESS_REPORT
start_progress_monitor((j_common_ptr) &cinfo, &progress);
#endif
/* Specify data source for decompression */
jpeg_stdio_src(&cinfo, input_file);
/* Read file header, set default decompression parameters */
(void) jpeg_read_header(&cinfo, TRUE);
/* Adjust default decompression parameters by re-parsing the options */
file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
/* Initialize the output module now to let it override any crucial
* option settings (for instance, GIF wants to force color quantization).
*/
switch (requested_fmt) {
#ifdef BMP_SUPPORTED
case FMT_BMP:
dest_mgr = jinit_write_bmp(&cinfo, FALSE);
break;
case FMT_OS2:
dest_mgr = jinit_write_bmp(&cinfo, TRUE);
break;
#endif
#ifdef GIF_SUPPORTED
case FMT_GIF:
dest_mgr = jinit_write_gif(&cinfo);
break;
#endif
#ifdef PPM_SUPPORTED
case FMT_PPM:
dest_mgr = jinit_write_ppm(&cinfo);
break;
#endif
#ifdef RLE_SUPPORTED
case FMT_RLE:
dest_mgr = jinit_write_rle(&cinfo);
break;
#endif
#ifdef TARGA_SUPPORTED
case FMT_TARGA:
dest_mgr = jinit_write_targa(&cinfo);
break;
#endif
default:
ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT);
break;
}
dest_mgr->output_file = output_file;
/* Start decompressor */
(void) jpeg_start_decompress(&cinfo);
/* Write output file header */
(*dest_mgr->start_output) (&cinfo, dest_mgr);
/* Process data */
while (cinfo.output_scanline < cinfo.output_height) {
num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
dest_mgr->buffer_height);
(*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
}
#ifdef PROGRESS_REPORT
/* Hack: count final pass as done in case finish_output does an extra pass.
* The library won't have updated completed_passes.
*/
progress.pub.completed_passes = progress.pub.total_passes;
#endif
/* Finish decompression and release memory.
* I must do it in this order because output module has allocated memory
* of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
*/
(*dest_mgr->finish_output) (&cinfo, dest_mgr);
(void) jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
/* Close files, if we opened them */
if (input_file != stdin)
fclose(input_file);
if (output_file != stdout)
fclose(output_file);
#ifdef PROGRESS_REPORT
end_progress_monitor((j_common_ptr) &cinfo);
#endif
/* All done. */
exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
return 0; /* suppress no-return-value warnings */
}
libs/jpeg-9/example.c
-433
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@@ -1,433 +0,0 @@
/*
* example.c
*
* This file illustrates how to use the IJG code as a subroutine library
* to read or write JPEG image files. You should look at this code in
* conjunction with the documentation file libjpeg.txt.
*
* This code will not do anything useful as-is, but it may be helpful as a
* skeleton for constructing routines that call the JPEG library.
*
* We present these routines in the same coding style used in the JPEG code
* (ANSI function definitions, etc); but you are of course free to code your
* routines in a different style if you prefer.
*/
#include <stdio.h>
/*
* Include file for users of JPEG library.
* You will need to have included system headers that define at least
* the typedefs FILE and size_t before you can include jpeglib.h.
* (stdio.h is sufficient on ANSI-conforming systems.)
* You may also wish to include "jerror.h".
*/
#include "jpeglib.h"
/*
* <setjmp.h> is used for the optional error recovery mechanism shown in
* the second part of the example.
*/
#include <setjmp.h>
/******************** JPEG COMPRESSION SAMPLE INTERFACE *******************/
/* This half of the example shows how to feed data into the JPEG compressor.
* We present a minimal version that does not worry about refinements such
* as error recovery (the JPEG code will just exit() if it gets an error).
*/
/*
* IMAGE DATA FORMATS:
*
* The standard input image format is a rectangular array of pixels, with
* each pixel having the same number of "component" values (color channels).
* Each pixel row is an array of JSAMPLEs (which typically are unsigned chars).
* If you are working with color data, then the color values for each pixel
* must be adjacent in the row; for example, R,G,B,R,G,B,R,G,B,... for 24-bit
* RGB color.
*
* For this example, we'll assume that this data structure matches the way
* our application has stored the image in memory, so we can just pass a
* pointer to our image buffer. In particular, let's say that the image is
* RGB color and is described by:
*/
extern JSAMPLE * image_buffer; /* Points to large array of R,G,B-order data */
extern int image_height; /* Number of rows in image */
extern int image_width; /* Number of columns in image */
/*
* Sample routine for JPEG compression. We assume that the target file name
* and a compression quality factor are passed in.
*/
GLOBAL(void)
write_JPEG_file (char * filename, int quality)
{
/* This struct contains the JPEG compression parameters and pointers to
* working space (which is allocated as needed by the JPEG library).
* It is possible to have several such structures, representing multiple
* compression/decompression processes, in existence at once. We refer
* to any one struct (and its associated working data) as a "JPEG object".
*/
struct jpeg_compress_struct cinfo;
/* This struct represents a JPEG error handler. It is declared separately
* because applications often want to supply a specialized error handler
* (see the second half of this file for an example). But here we just
* take the easy way out and use the standard error handler, which will
* print a message on stderr and call exit() if compression fails.
* Note that this struct must live as long as the main JPEG parameter
* struct, to avoid dangling-pointer problems.
*/
struct jpeg_error_mgr jerr;
/* More stuff */
FILE * outfile; /* target file */
JSAMPROW row_pointer[1]; /* pointer to JSAMPLE row[s] */
int row_stride; /* physical row width in image buffer */
/* Step 1: allocate and initialize JPEG compression object */
/* We have to set up the error handler first, in case the initialization
* step fails. (Unlikely, but it could happen if you are out of memory.)
* This routine fills in the contents of struct jerr, and returns jerr's
* address which we place into the link field in cinfo.
*/
cinfo.err = jpeg_std_error(&jerr);
/* Now we can initialize the JPEG compression object. */
jpeg_create_compress(&cinfo);
/* Step 2: specify data destination (eg, a file) */
/* Note: steps 2 and 3 can be done in either order. */
/* Here we use the library-supplied code to send compressed data to a
* stdio stream. You can also write your own code to do something else.
* VERY IMPORTANT: use "b" option to fopen() if you are on a machine that
* requires it in order to write binary files.
*/
if ((outfile = fopen(filename, "wb")) == NULL) {
fprintf(stderr, "can't open %s\n", filename);
exit(1);
}
jpeg_stdio_dest(&cinfo, outfile);
/* Step 3: set parameters for compression */
/* First we supply a description of the input image.
* Four fields of the cinfo struct must be filled in:
*/
cinfo.image_width = image_width; /* image width and height, in pixels */
cinfo.image_height = image_height;
cinfo.input_components = 3; /* # of color components per pixel */
cinfo.in_color_space = JCS_RGB; /* colorspace of input image */
/* Now use the library's routine to set default compression parameters.
* (You must set at least cinfo.in_color_space before calling this,
* since the defaults depend on the source color space.)
*/
jpeg_set_defaults(&cinfo);
/* Now you can set any non-default parameters you wish to.
* Here we just illustrate the use of quality (quantization table) scaling:
*/
jpeg_set_quality(&cinfo, quality, TRUE /* limit to baseline-JPEG values */);
/* Step 4: Start compressor */
/* TRUE ensures that we will write a complete interchange-JPEG file.
* Pass TRUE unless you are very sure of what you're doing.
*/
jpeg_start_compress(&cinfo, TRUE);
/* Step 5: while (scan lines remain to be written) */
/* jpeg_write_scanlines(...); */
/* Here we use the library's state variable cinfo.next_scanline as the
* loop counter, so that we don't have to keep track ourselves.
* To keep things simple, we pass one scanline per call; you can pass
* more if you wish, though.
*/
row_stride = image_width * 3; /* JSAMPLEs per row in image_buffer */
while (cinfo.next_scanline < cinfo.image_height) {
/* jpeg_write_scanlines expects an array of pointers to scanlines.
* Here the array is only one element long, but you could pass
* more than one scanline at a time if that's more convenient.
*/
row_pointer[0] = & image_buffer[cinfo.next_scanline * row_stride];
(void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
}
/* Step 6: Finish compression */
jpeg_finish_compress(&cinfo);
/* After finish_compress, we can close the output file. */
fclose(outfile);
/* Step 7: release JPEG compression object */
/* This is an important step since it will release a good deal of memory. */
jpeg_destroy_compress(&cinfo);
/* And we're done! */
}
/*
* SOME FINE POINTS:
*
* In the above loop, we ignored the return value of jpeg_write_scanlines,
* which is the number of scanlines actually written. We could get away
* with this because we were only relying on the value of cinfo.next_scanline,
* which will be incremented correctly. If you maintain additional loop
* variables then you should be careful to increment them properly.
* Actually, for output to a stdio stream you needn't worry, because
* then jpeg_write_scanlines will write all the lines passed (or else exit
* with a fatal error). Partial writes can only occur if you use a data
* destination module that can demand suspension of the compressor.
* (If you don't know what that's for, you don't need it.)
*
* If the compressor requires full-image buffers (for entropy-coding
* optimization or a multi-scan JPEG file), it will create temporary
* files for anything that doesn't fit within the maximum-memory setting.
* (Note that temp files are NOT needed if you use the default parameters.)
* On some systems you may need to set up a signal handler to ensure that
* temporary files are deleted if the program is interrupted. See libjpeg.txt.
*
* Scanlines MUST be supplied in top-to-bottom order if you want your JPEG
* files to be compatible with everyone else's. If you cannot readily read
* your data in that order, you'll need an intermediate array to hold the
* image. See rdtarga.c or rdbmp.c for examples of handling bottom-to-top
* source data using the JPEG code's internal virtual-array mechanisms.
*/
/******************** JPEG DECOMPRESSION SAMPLE INTERFACE *******************/
/* This half of the example shows how to read data from the JPEG decompressor.
* It's a bit more refined than the above, in that we show:
* (a) how to modify the JPEG library's standard error-reporting behavior;
* (b) how to allocate workspace using the library's memory manager.
*
* Just to make this example a little different from the first one, we'll
* assume that we do not intend to put the whole image into an in-memory
* buffer, but to send it line-by-line someplace else. We need a one-
* scanline-high JSAMPLE array as a work buffer, and we will let the JPEG
* memory manager allocate it for us. This approach is actually quite useful
* because we don't need to remember to deallocate the buffer separately: it
* will go away automatically when the JPEG object is cleaned up.
*/
/*
* ERROR HANDLING:
*
* The JPEG library's standard error handler (jerror.c) is divided into
* several "methods" which you can override individually. This lets you
* adjust the behavior without duplicating a lot of code, which you might
* have to update with each future release.
*
* Our example here shows how to override the "error_exit" method so that
* control is returned to the library's caller when a fatal error occurs,
* rather than calling exit() as the standard error_exit method does.
*
* We use C's setjmp/longjmp facility to return control. This means that the
* routine which calls the JPEG library must first execute a setjmp() call to
* establish the return point. We want the replacement error_exit to do a
* longjmp(). But we need to make the setjmp buffer accessible to the
* error_exit routine. To do this, we make a private extension of the
* standard JPEG error handler object. (If we were using C++, we'd say we
* were making a subclass of the regular error handler.)
*
* Here's the extended error handler struct:
*/
struct my_error_mgr {
struct jpeg_error_mgr pub; /* "public" fields */
jmp_buf setjmp_buffer; /* for return to caller */
};
typedef struct my_error_mgr * my_error_ptr;
/*
* Here's the routine that will replace the standard error_exit method:
*/
METHODDEF(void)
my_error_exit (j_common_ptr cinfo)
{
/* cinfo->err really points to a my_error_mgr struct, so coerce pointer */
my_error_ptr myerr = (my_error_ptr) cinfo->err;
/* Always display the message. */
/* We could postpone this until after returning, if we chose. */
(*cinfo->err->output_message) (cinfo);
/* Return control to the setjmp point */
longjmp(myerr->setjmp_buffer, 1);
}
/*
* Sample routine for JPEG decompression. We assume that the source file name
* is passed in. We want to return 1 on success, 0 on error.
*/
GLOBAL(int)
read_JPEG_file (char * filename)
{
/* This struct contains the JPEG decompression parameters and pointers to
* working space (which is allocated as needed by the JPEG library).
*/
struct jpeg_decompress_struct cinfo;
/* We use our private extension JPEG error handler.
* Note that this struct must live as long as the main JPEG parameter
* struct, to avoid dangling-pointer problems.
*/
struct my_error_mgr jerr;
/* More stuff */
FILE * infile; /* source file */
JSAMPARRAY buffer; /* Output row buffer */
int row_stride; /* physical row width in output buffer */
/* In this example we want to open the input file before doing anything else,
* so that the setjmp() error recovery below can assume the file is open.
* VERY IMPORTANT: use "b" option to fopen() if you are on a machine that
* requires it in order to read binary files.
*/
if ((infile = fopen(filename, "rb")) == NULL) {
fprintf(stderr, "can't open %s\n", filename);
return 0;
}
/* Step 1: allocate and initialize JPEG decompression object */
/* We set up the normal JPEG error routines, then override error_exit. */
cinfo.err = jpeg_std_error(&jerr.pub);
jerr.pub.error_exit = my_error_exit;
/* Establish the setjmp return context for my_error_exit to use. */
if (setjmp(jerr.setjmp_buffer)) {
/* If we get here, the JPEG code has signaled an error.
* We need to clean up the JPEG object, close the input file, and return.
*/
jpeg_destroy_decompress(&cinfo);
fclose(infile);
return 0;
}
/* Now we can initialize the JPEG decompression object. */
jpeg_create_decompress(&cinfo);
/* Step 2: specify data source (eg, a file) */
jpeg_stdio_src(&cinfo, infile);
/* Step 3: read file parameters with jpeg_read_header() */
(void) jpeg_read_header(&cinfo, TRUE);
/* We can ignore the return value from jpeg_read_header since
* (a) suspension is not possible with the stdio data source, and
* (b) we passed TRUE to reject a tables-only JPEG file as an error.
* See libjpeg.txt for more info.
*/
/* Step 4: set parameters for decompression */
/* In this example, we don't need to change any of the defaults set by
* jpeg_read_header(), so we do nothing here.
*/
/* Step 5: Start decompressor */
(void) jpeg_start_decompress(&cinfo);
/* We can ignore the return value since suspension is not possible
* with the stdio data source.
*/
/* We may need to do some setup of our own at this point before reading
* the data. After jpeg_start_decompress() we have the correct scaled
* output image dimensions available, as well as the output colormap
* if we asked for color quantization.
* In this example, we need to make an output work buffer of the right size.
*/
/* JSAMPLEs per row in output buffer */
row_stride = cinfo.output_width * cinfo.output_components;
/* Make a one-row-high sample array that will go away when done with image */
buffer = (*cinfo.mem->alloc_sarray)
((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1);
/* Step 6: while (scan lines remain to be read) */
/* jpeg_read_scanlines(...); */
/* Here we use the library's state variable cinfo.output_scanline as the
* loop counter, so that we don't have to keep track ourselves.
*/
while (cinfo.output_scanline < cinfo.output_height) {
/* jpeg_read_scanlines expects an array of pointers to scanlines.
* Here the array is only one element long, but you could ask for
* more than one scanline at a time if that's more convenient.
*/
(void) jpeg_read_scanlines(&cinfo, buffer, 1);
/* Assume put_scanline_someplace wants a pointer and sample count. */
put_scanline_someplace(buffer[0], row_stride);
}
/* Step 7: Finish decompression */
(void) jpeg_finish_decompress(&cinfo);
/* We can ignore the return value since suspension is not possible
* with the stdio data source.
*/
/* Step 8: Release JPEG decompression object */
/* This is an important step since it will release a good deal of memory. */
jpeg_destroy_decompress(&cinfo);
/* After finish_decompress, we can close the input file.
* Here we postpone it until after no more JPEG errors are possible,
* so as to simplify the setjmp error logic above. (Actually, I don't
* think that jpeg_destroy can do an error exit, but why assume anything...)
*/
fclose(infile);
/* At this point you may want to check to see whether any corrupt-data
* warnings occurred (test whether jerr.pub.num_warnings is nonzero).
*/
/* And we're done! */
return 1;
}
/*
* SOME FINE POINTS:
*
* In the above code, we ignored the return value of jpeg_read_scanlines,
* which is the number of scanlines actually read. We could get away with
* this because we asked for only one line at a time and we weren't using
* a suspending data source. See libjpeg.txt for more info.
*
* We cheated a bit by calling alloc_sarray() after jpeg_start_decompress();
* we should have done it beforehand to ensure that the space would be
* counted against the JPEG max_memory setting. In some systems the above
* code would risk an out-of-memory error. However, in general we don't
* know the output image dimensions before jpeg_start_decompress(), unless we
* call jpeg_calc_output_dimensions(). See libjpeg.txt for more about this.
*
* Scanlines are returned in the same order as they appear in the JPEG file,
* which is standardly top-to-bottom. If you must emit data bottom-to-top,
* you can use one of the virtual arrays provided by the JPEG memory manager
* to invert the data. See wrbmp.c for an example.
*
* As with compression, some operating modes may require temporary files.
* On some systems you may need to set up a signal handler to ensure that
* temporary files are deleted if the program is interrupted. See libjpeg.txt.
*/
libs/jpeg-9/filelist.txt
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IJG JPEG LIBRARY: FILE LIST
Copyright (C) 1994-2012, Thomas G. Lane, Guido Vollbeding.
This file is part of the Independent JPEG Group's software.
For conditions of distribution and use, see the accompanying README file.
Here is a road map to the files in the IJG JPEG distribution. The
distribution includes the JPEG library proper, plus two application
programs ("cjpeg" and "djpeg") which use the library to convert JPEG
files to and from some other popular image formats. A third application
"jpegtran" uses the library to do lossless conversion between different
variants of JPEG. There are also two stand-alone applications,
"rdjpgcom" and "wrjpgcom".
THE JPEG LIBRARY
================
Include files:
jpeglib.h JPEG library's exported data and function declarations.
jconfig.h Configuration declarations. Note: this file is not present
in the distribution; it is generated during installation.
jmorecfg.h Additional configuration declarations; need not be changed
for a standard installation.
jerror.h Declares JPEG library's error and trace message codes.
jinclude.h Central include file used by all IJG .c files to reference
system include files.
jpegint.h JPEG library's internal data structures.
jdct.h Private declarations for forward & reverse DCT subsystems.
jmemsys.h Private declarations for memory management subsystem.
jversion.h Version information.
Applications using the library should include jpeglib.h (which in turn
includes jconfig.h and jmorecfg.h). Optionally, jerror.h may be included
if the application needs to reference individual JPEG error codes. The
other include files are intended for internal use and would not normally
be included by an application program. (cjpeg/djpeg/etc do use jinclude.h,
since its function is to improve portability of the whole IJG distribution.
Most other applications will directly include the system include files they
want, and hence won't need jinclude.h.)
C source code files:
These files contain most of the functions intended to be called directly by
an application program:
jcapimin.c Application program interface: core routines for compression.
jcapistd.c Application program interface: standard compression.
jdapimin.c Application program interface: core routines for decompression.
jdapistd.c Application program interface: standard decompression.
jcomapi.c Application program interface routines common to compression
and decompression.
jcparam.c Compression parameter setting helper routines.
jctrans.c API and library routines for transcoding compression.
jdtrans.c API and library routines for transcoding decompression.
Compression side of the library:
jcinit.c Initialization: determines which other modules to use.
jcmaster.c Master control: setup and inter-pass sequencing logic.
jcmainct.c Main buffer controller (preprocessor => JPEG compressor).
jcprepct.c Preprocessor buffer controller.
jccoefct.c Buffer controller for DCT coefficient buffer.
jccolor.c Color space conversion.
jcsample.c Downsampling.
jcdctmgr.c DCT manager (DCT implementation selection & control).
jfdctint.c Forward DCT using slow-but-accurate integer method.
jfdctfst.c Forward DCT using faster, less accurate integer method.
jfdctflt.c Forward DCT using floating-point arithmetic.
jchuff.c Huffman entropy coding.
jcarith.c Arithmetic entropy coding.
jcmarker.c JPEG marker writing.
jdatadst.c Data destination managers for memory and stdio output.
Decompression side of the library:
jdmaster.c Master control: determines which other modules to use.
jdinput.c Input controller: controls input processing modules.
jdmainct.c Main buffer controller (JPEG decompressor => postprocessor).
jdcoefct.c Buffer controller for DCT coefficient buffer.
jdpostct.c Postprocessor buffer controller.
jdmarker.c JPEG marker reading.
jdhuff.c Huffman entropy decoding.
jdarith.c Arithmetic entropy decoding.
jddctmgr.c IDCT manager (IDCT implementation selection & control).
jidctint.c Inverse DCT using slow-but-accurate integer method.
jidctfst.c Inverse DCT using faster, less accurate integer method.
jidctflt.c Inverse DCT using floating-point arithmetic.
jdsample.c Upsampling.
jdcolor.c Color space conversion.
jdmerge.c Merged upsampling/color conversion (faster, lower quality).
jquant1.c One-pass color quantization using a fixed-spacing colormap.
jquant2.c Two-pass color quantization using a custom-generated colormap.
Also handles one-pass quantization to an externally given map.
jdatasrc.c Data source managers for memory and stdio input.
Support files for both compression and decompression:
jaricom.c Tables for common use in arithmetic entropy encoding and
decoding routines.
jerror.c Standard error handling routines (application replaceable).
jmemmgr.c System-independent (more or less) memory management code.
jutils.c Miscellaneous utility routines.
jmemmgr.c relies on a system-dependent memory management module. The IJG
distribution includes the following implementations of the system-dependent
module:
jmemnobs.c "No backing store": assumes adequate virtual memory exists.
jmemansi.c Makes temporary files with ANSI-standard routine tmpfile().
jmemname.c Makes temporary files with program-generated file names.
jmemdos.c Custom implementation for MS-DOS (16-bit environment only):
can use extended and expanded memory as well as temp files.
jmemmac.c Custom implementation for Apple Macintosh.
Exactly one of the system-dependent modules should be configured into an
installed JPEG library (see install.txt for hints about which one to use).
On unusual systems you may find it worthwhile to make a special
system-dependent memory manager.
Non-C source code files:
jmemdosa.asm 80x86 assembly code support for jmemdos.c; used only in
MS-DOS-specific configurations of the JPEG library.
CJPEG/DJPEG/JPEGTRAN
====================
Include files:
cdjpeg.h Declarations shared by cjpeg/djpeg/jpegtran modules.
cderror.h Additional error and trace message codes for cjpeg et al.
transupp.h Declarations for jpegtran support routines in transupp.c.
C source code files:
cjpeg.c Main program for cjpeg.
djpeg.c Main program for djpeg.
jpegtran.c Main program for jpegtran.
cdjpeg.c Utility routines used by all three programs.
rdcolmap.c Code to read a colormap file for djpeg's "-map" switch.
rdswitch.c Code to process some of cjpeg's more complex switches.
Also used by jpegtran.
transupp.c Support code for jpegtran: lossless image manipulations.
Image file reader modules for cjpeg:
rdbmp.c BMP file input.
rdgif.c GIF file input (now just a stub).
rdppm.c PPM/PGM file input.
rdrle.c Utah RLE file input.
rdtarga.c Targa file input.
Image file writer modules for djpeg:
wrbmp.c BMP file output.
wrgif.c GIF file output (a mere shadow of its former self).
wrppm.c PPM/PGM file output.
wrrle.c Utah RLE file output.
wrtarga.c Targa file output.
RDJPGCOM/WRJPGCOM
=================
C source code files:
rdjpgcom.c Stand-alone rdjpgcom application.
wrjpgcom.c Stand-alone wrjpgcom application.
These programs do not depend on the IJG library. They do use
jconfig.h and jinclude.h, only to improve portability.
ADDITIONAL FILES
================
Documentation (see README for a guide to the documentation files):
README Master documentation file.
*.txt Other documentation files.
*.1 Documentation in Unix man page format.
change.log Version-to-version change highlights.
example.c Sample code for calling JPEG library.
Configuration/installation files and programs (see install.txt for more info):
configure Unix shell script to perform automatic configuration.
configure.ac Source file for use with Autoconf to generate configure.
ltmain.sh Support scripts for configure (from GNU libtool).
config.guess
config.sub
depcomp
missing
ar-lib
install-sh Install shell script for those Unix systems lacking one.
Makefile.in Makefile input for configure.
Makefile.am Source file for use with Automake to generate Makefile.in.
ckconfig.c Program to generate jconfig.h on non-Unix systems.
jconfig.txt Template for making jconfig.h by hand.
mak*.* Sample makefiles for particular systems.
jconfig.* Sample jconfig.h for particular systems.
libjpeg.map Script to generate shared library with versioned symbols.
aclocal.m4 M4 macro definitions for use with Autoconf.
Test files (see install.txt for test procedure):
test*.* Source and comparison files for confidence test.
These are binary image files, NOT text files.
libs/jpeg-9/install-sh
-527
View File
@@ -1,527 +0,0 @@
#!/bin/sh
# install - install a program, script, or datafile
scriptversion=2011-11-20.07; # UTC
# This originates from X11R5 (mit/util/scripts/install.sh), which was
# later released in X11R6 (xc/config/util/install.sh) with the
# following copyright and license.
#
# Copyright (C) 1994 X Consortium
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name of the X Consortium shall not
# be used in advertising or otherwise to promote the sale, use or other deal-
# ings in this Software without prior written authorization from the X Consor-
# tium.
#
#
# FSF changes to this file are in the public domain.
#
# Calling this script install-sh is preferred over install.sh, to prevent
# 'make' implicit rules from creating a file called install from it
# when there is no Makefile.
#
# This script is compatible with the BSD install script, but was written
# from scratch.
nl='
'
IFS=" "" $nl"
# set DOITPROG to echo to test this script
# Don't use :- since 4.3BSD and earlier shells don't like it.
doit=${DOITPROG-}
if test -z "$doit"; then
doit_exec=exec
else
doit_exec=$doit
fi
# Put in absolute file names if you don't have them in your path;
# or use environment vars.
chgrpprog=${CHGRPPROG-chgrp}
chmodprog=${CHMODPROG-chmod}
chownprog=${CHOWNPROG-chown}
cmpprog=${CMPPROG-cmp}
cpprog=${CPPROG-cp}
mkdirprog=${MKDIRPROG-mkdir}
mvprog=${MVPROG-mv}
rmprog=${RMPROG-rm}
stripprog=${STRIPPROG-strip}
posix_glob='?'
initialize_posix_glob='
test "$posix_glob" != "?" || {
if (set -f) 2>/dev/null; then
posix_glob=
else
posix_glob=:
fi
}
'
posix_mkdir=
# Desired mode of installed file.
mode=0755
chgrpcmd=
chmodcmd=$chmodprog
chowncmd=
mvcmd=$mvprog
rmcmd="$rmprog -f"
stripcmd=
src=
dst=
dir_arg=
dst_arg=
copy_on_change=false
no_target_directory=
usage="\
Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
or: $0 [OPTION]... SRCFILES... DIRECTORY
or: $0 [OPTION]... -t DIRECTORY SRCFILES...
or: $0 [OPTION]... -d DIRECTORIES...
In the 1st form, copy SRCFILE to DSTFILE.
In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
In the 4th, create DIRECTORIES.
Options:
--help display this help and exit.
--version display version info and exit.
-c (ignored)
-C install only if different (preserve the last data modification time)
-d create directories instead of installing files.
-g GROUP $chgrpprog installed files to GROUP.
-m MODE $chmodprog installed files to MODE.
-o USER $chownprog installed files to USER.
-s $stripprog installed files.
-t DIRECTORY install into DIRECTORY.
-T report an error if DSTFILE is a directory.
Environment variables override the default commands:
CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
RMPROG STRIPPROG
"
while test $# -ne 0; do
case $1 in
-c) ;;
-C) copy_on_change=true;;
-d) dir_arg=true;;
-g) chgrpcmd="$chgrpprog $2"
shift;;
--help) echo "$usage"; exit $?;;
-m) mode=$2
case $mode in
*' '* | *' '* | *'
'* | *'*'* | *'?'* | *'['*)
echo "$0: invalid mode: $mode" >&2
exit 1;;
esac
shift;;
-o) chowncmd="$chownprog $2"
shift;;
-s) stripcmd=$stripprog;;
-t) dst_arg=$2
# Protect names problematic for 'test' and other utilities.
case $dst_arg in
-* | [=\(\)!]) dst_arg=./$dst_arg;;
esac
shift;;
-T) no_target_directory=true;;
--version) echo "$0 $scriptversion"; exit $?;;
--) shift
break;;
-*) echo "$0: invalid option: $1" >&2
exit 1;;
*) break;;
esac
shift
done
if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
# When -d is used, all remaining arguments are directories to create.
# When -t is used, the destination is already specified.
# Otherwise, the last argument is the destination. Remove it from $@.
for arg
do
if test -n "$dst_arg"; then
# $@ is not empty: it contains at least $arg.
set fnord "$@" "$dst_arg"
shift # fnord
fi
shift # arg
dst_arg=$arg
# Protect names problematic for 'test' and other utilities.
case $dst_arg in
-* | [=\(\)!]) dst_arg=./$dst_arg;;
esac
done
fi
if test $# -eq 0; then
if test -z "$dir_arg"; then
echo "$0: no input file specified." >&2
exit 1
fi
# It's OK to call 'install-sh -d' without argument.
# This can happen when creating conditional directories.
exit 0
fi
if test -z "$dir_arg"; then
do_exit='(exit $ret); exit $ret'
trap "ret=129; $do_exit" 1
trap "ret=130; $do_exit" 2
trap "ret=141; $do_exit" 13
trap "ret=143; $do_exit" 15
# Set umask so as not to create temps with too-generous modes.
# However, 'strip' requires both read and write access to temps.
case $mode in
# Optimize common cases.
*644) cp_umask=133;;
*755) cp_umask=22;;
*[0-7])
if test -z "$stripcmd"; then
u_plus_rw=
else
u_plus_rw='% 200'
fi
cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
*)
if test -z "$stripcmd"; then
u_plus_rw=
else
u_plus_rw=,u+rw
fi
cp_umask=$mode$u_plus_rw;;
esac
fi
for src
do
# Protect names problematic for 'test' and other utilities.
case $src in
-* | [=\(\)!]) src=./$src;;
esac
if test -n "$dir_arg"; then
dst=$src
dstdir=$dst
test -d "$dstdir"
dstdir_status=$?
else
# Waiting for this to be detected by the "$cpprog $src $dsttmp" command
# might cause directories to be created, which would be especially bad
# if $src (and thus $dsttmp) contains '*'.
if test ! -f "$src" && test ! -d "$src"; then
echo "$0: $src does not exist." >&2
exit 1
fi
if test -z "$dst_arg"; then
echo "$0: no destination specified." >&2
exit 1
fi
dst=$dst_arg
# If destination is a directory, append the input filename; won't work
# if double slashes aren't ignored.
if test -d "$dst"; then
if test -n "$no_target_directory"; then
echo "$0: $dst_arg: Is a directory" >&2
exit 1
fi
dstdir=$dst
dst=$dstdir/`basename "$src"`
dstdir_status=0
else
# Prefer dirname, but fall back on a substitute if dirname fails.
dstdir=`
(dirname "$dst") 2>/dev/null ||
expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
X"$dst" : 'X\(//\)[^/]' \| \
X"$dst" : 'X\(//\)$' \| \
X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
echo X"$dst" |
sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
s//\1/
q
}
/^X\(\/\/\)[^/].*/{
s//\1/
q
}
/^X\(\/\/\)$/{
s//\1/
q
}
/^X\(\/\).*/{
s//\1/
q
}
s/.*/./; q'
`
test -d "$dstdir"
dstdir_status=$?
fi
fi
obsolete_mkdir_used=false
if test $dstdir_status != 0; then
case $posix_mkdir in
'')
# Create intermediate dirs using mode 755 as modified by the umask.
# This is like FreeBSD 'install' as of 1997-10-28.
umask=`umask`
case $stripcmd.$umask in
# Optimize common cases.
*[2367][2367]) mkdir_umask=$umask;;
.*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
*[0-7])
mkdir_umask=`expr $umask + 22 \
- $umask % 100 % 40 + $umask % 20 \
- $umask % 10 % 4 + $umask % 2
`;;
*) mkdir_umask=$umask,go-w;;
esac
# With -d, create the new directory with the user-specified mode.
# Otherwise, rely on $mkdir_umask.
if test -n "$dir_arg"; then
mkdir_mode=-m$mode
else
mkdir_mode=
fi
posix_mkdir=false
case $umask in
*[123567][0-7][0-7])
# POSIX mkdir -p sets u+wx bits regardless of umask, which
# is incompatible with FreeBSD 'install' when (umask & 300) != 0.
;;
*)
tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
if (umask $mkdir_umask &&
exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
then
if test -z "$dir_arg" || {
# Check for POSIX incompatibilities with -m.
# HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
# other-writable bit of parent directory when it shouldn't.
# FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
ls_ld_tmpdir=`ls -ld "$tmpdir"`
case $ls_ld_tmpdir in
d????-?r-*) different_mode=700;;
d????-?--*) different_mode=755;;
*) false;;
esac &&
$mkdirprog -m$different_mode -p -- "$tmpdir" && {
ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
}
}
then posix_mkdir=:
fi
rmdir "$tmpdir/d" "$tmpdir"
else
# Remove any dirs left behind by ancient mkdir implementations.
rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
fi
trap '' 0;;
esac;;
esac
if
$posix_mkdir && (
umask $mkdir_umask &&
$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
)
then :
else
# The umask is ridiculous, or mkdir does not conform to POSIX,
# or it failed possibly due to a race condition. Create the
# directory the slow way, step by step, checking for races as we go.
case $dstdir in
/*) prefix='/';;
[-=\(\)!]*) prefix='./';;
*) prefix='';;
esac
eval "$initialize_posix_glob"
oIFS=$IFS
IFS=/
$posix_glob set -f
set fnord $dstdir
shift
$posix_glob set +f
IFS=$oIFS
prefixes=
for d
do
test X"$d" = X && continue
prefix=$prefix$d
if test -d "$prefix"; then
prefixes=
else
if $posix_mkdir; then
(umask=$mkdir_umask &&
$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
# Don't fail if two instances are running concurrently.
test -d "$prefix" || exit 1
else
case $prefix in
*\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
*) qprefix=$prefix;;
esac
prefixes="$prefixes '$qprefix'"
fi
fi
prefix=$prefix/
done
if test -n "$prefixes"; then
# Don't fail if two instances are running concurrently.
(umask $mkdir_umask &&
eval "\$doit_exec \$mkdirprog $prefixes") ||
test -d "$dstdir" || exit 1
obsolete_mkdir_used=true
fi
fi
fi
if test -n "$dir_arg"; then
{ test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
{ test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
{ test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
else
# Make a couple of temp file names in the proper directory.
dsttmp=$dstdir/_inst.$$_
rmtmp=$dstdir/_rm.$$_
# Trap to clean up those temp files at exit.
trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
# Copy the file name to the temp name.
(umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
# and set any options; do chmod last to preserve setuid bits.
#
# If any of these fail, we abort the whole thing. If we want to
# ignore errors from any of these, just make sure not to ignore
# errors from the above "$doit $cpprog $src $dsttmp" command.
#
{ test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
{ test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
{ test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
{ test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
# If -C, don't bother to copy if it wouldn't change the file.
if $copy_on_change &&
old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` &&
new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` &&
eval "$initialize_posix_glob" &&
$posix_glob set -f &&
set X $old && old=:$2:$4:$5:$6 &&
set X $new && new=:$2:$4:$5:$6 &&
$posix_glob set +f &&
test "$old" = "$new" &&
$cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
then
rm -f "$dsttmp"
else
# Rename the file to the real destination.
$doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
# The rename failed, perhaps because mv can't rename something else
# to itself, or perhaps because mv is so ancient that it does not
# support -f.
{
# Now remove or move aside any old file at destination location.
# We try this two ways since rm can't unlink itself on some
# systems and the destination file might be busy for other
# reasons. In this case, the final cleanup might fail but the new
# file should still install successfully.
{
test ! -f "$dst" ||
$doit $rmcmd -f "$dst" 2>/dev/null ||
{ $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
{ $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
} ||
{ echo "$0: cannot unlink or rename $dst" >&2
(exit 1); exit 1
}
} &&
# Now rename the file to the real destination.
$doit $mvcmd "$dsttmp" "$dst"
}
fi || exit 1
trap '' 0
fi
done
# Local variables:
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC"
# time-stamp-end: "; # UTC"
# End:
libs/jpeg-9/install.txt
-1096
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File diff suppressed because it is too large Load Diff
libs/jpeg-9/jaricom.c
-153
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@@ -1,153 +0,0 @@
/*
* jaricom.c
*
* Developed 1997-2011 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains probability estimation tables for common use in
* arithmetic entropy encoding and decoding routines.
*
* This data represents Table D.3 in the JPEG spec (D.2 in the draft),
* ISO/IEC IS 10918-1 and CCITT Recommendation ITU-T T.81, and Table 24
* in the JBIG spec, ISO/IEC IS 11544 and CCITT Recommendation ITU-T T.82.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* The following #define specifies the packing of the four components
* into the compact INT32 representation.
* Note that this formula must match the actual arithmetic encoder
* and decoder implementation. The implementation has to be changed
* if this formula is changed.
* The current organization is leaned on Markus Kuhn's JBIG
* implementation (jbig_tab.c).
*/
#define V(i,a,b,c,d) (((INT32)a << 16) | ((INT32)c << 8) | ((INT32)d << 7) | b)
const INT32 jpeg_aritab[113+1] = {
/*
* Index, Qe_Value, Next_Index_LPS, Next_Index_MPS, Switch_MPS
*/
V( 0, 0x5a1d, 1, 1, 1 ),
V( 1, 0x2586, 14, 2, 0 ),
V( 2, 0x1114, 16, 3, 0 ),
V( 3, 0x080b, 18, 4, 0 ),
V( 4, 0x03d8, 20, 5, 0 ),
V( 5, 0x01da, 23, 6, 0 ),
V( 6, 0x00e5, 25, 7, 0 ),
V( 7, 0x006f, 28, 8, 0 ),
V( 8, 0x0036, 30, 9, 0 ),
V( 9, 0x001a, 33, 10, 0 ),
V( 10, 0x000d, 35, 11, 0 ),
V( 11, 0x0006, 9, 12, 0 ),
V( 12, 0x0003, 10, 13, 0 ),
V( 13, 0x0001, 12, 13, 0 ),
V( 14, 0x5a7f, 15, 15, 1 ),
V( 15, 0x3f25, 36, 16, 0 ),
V( 16, 0x2cf2, 38, 17, 0 ),
V( 17, 0x207c, 39, 18, 0 ),
V( 18, 0x17b9, 40, 19, 0 ),
V( 19, 0x1182, 42, 20, 0 ),
V( 20, 0x0cef, 43, 21, 0 ),
V( 21, 0x09a1, 45, 22, 0 ),
V( 22, 0x072f, 46, 23, 0 ),
V( 23, 0x055c, 48, 24, 0 ),
V( 24, 0x0406, 49, 25, 0 ),
V( 25, 0x0303, 51, 26, 0 ),
V( 26, 0x0240, 52, 27, 0 ),
V( 27, 0x01b1, 54, 28, 0 ),
V( 28, 0x0144, 56, 29, 0 ),
V( 29, 0x00f5, 57, 30, 0 ),
V( 30, 0x00b7, 59, 31, 0 ),
V( 31, 0x008a, 60, 32, 0 ),
V( 32, 0x0068, 62, 33, 0 ),
V( 33, 0x004e, 63, 34, 0 ),
V( 34, 0x003b, 32, 35, 0 ),
V( 35, 0x002c, 33, 9, 0 ),
V( 36, 0x5ae1, 37, 37, 1 ),
V( 37, 0x484c, 64, 38, 0 ),
V( 38, 0x3a0d, 65, 39, 0 ),
V( 39, 0x2ef1, 67, 40, 0 ),
V( 40, 0x261f, 68, 41, 0 ),
V( 41, 0x1f33, 69, 42, 0 ),
V( 42, 0x19a8, 70, 43, 0 ),
V( 43, 0x1518, 72, 44, 0 ),
V( 44, 0x1177, 73, 45, 0 ),
V( 45, 0x0e74, 74, 46, 0 ),
V( 46, 0x0bfb, 75, 47, 0 ),
V( 47, 0x09f8, 77, 48, 0 ),
V( 48, 0x0861, 78, 49, 0 ),
V( 49, 0x0706, 79, 50, 0 ),
V( 50, 0x05cd, 48, 51, 0 ),
V( 51, 0x04de, 50, 52, 0 ),
V( 52, 0x040f, 50, 53, 0 ),
V( 53, 0x0363, 51, 54, 0 ),
V( 54, 0x02d4, 52, 55, 0 ),
V( 55, 0x025c, 53, 56, 0 ),
V( 56, 0x01f8, 54, 57, 0 ),
V( 57, 0x01a4, 55, 58, 0 ),
V( 58, 0x0160, 56, 59, 0 ),
V( 59, 0x0125, 57, 60, 0 ),
V( 60, 0x00f6, 58, 61, 0 ),
V( 61, 0x00cb, 59, 62, 0 ),
V( 62, 0x00ab, 61, 63, 0 ),
V( 63, 0x008f, 61, 32, 0 ),
V( 64, 0x5b12, 65, 65, 1 ),
V( 65, 0x4d04, 80, 66, 0 ),
V( 66, 0x412c, 81, 67, 0 ),
V( 67, 0x37d8, 82, 68, 0 ),
V( 68, 0x2fe8, 83, 69, 0 ),
V( 69, 0x293c, 84, 70, 0 ),
V( 70, 0x2379, 86, 71, 0 ),
V( 71, 0x1edf, 87, 72, 0 ),
V( 72, 0x1aa9, 87, 73, 0 ),
V( 73, 0x174e, 72, 74, 0 ),
V( 74, 0x1424, 72, 75, 0 ),
V( 75, 0x119c, 74, 76, 0 ),
V( 76, 0x0f6b, 74, 77, 0 ),
V( 77, 0x0d51, 75, 78, 0 ),
V( 78, 0x0bb6, 77, 79, 0 ),
V( 79, 0x0a40, 77, 48, 0 ),
V( 80, 0x5832, 80, 81, 1 ),
V( 81, 0x4d1c, 88, 82, 0 ),
V( 82, 0x438e, 89, 83, 0 ),
V( 83, 0x3bdd, 90, 84, 0 ),
V( 84, 0x34ee, 91, 85, 0 ),
V( 85, 0x2eae, 92, 86, 0 ),
V( 86, 0x299a, 93, 87, 0 ),
V( 87, 0x2516, 86, 71, 0 ),
V( 88, 0x5570, 88, 89, 1 ),
V( 89, 0x4ca9, 95, 90, 0 ),
V( 90, 0x44d9, 96, 91, 0 ),
V( 91, 0x3e22, 97, 92, 0 ),
V( 92, 0x3824, 99, 93, 0 ),
V( 93, 0x32b4, 99, 94, 0 ),
V( 94, 0x2e17, 93, 86, 0 ),
V( 95, 0x56a8, 95, 96, 1 ),
V( 96, 0x4f46, 101, 97, 0 ),
V( 97, 0x47e5, 102, 98, 0 ),
V( 98, 0x41cf, 103, 99, 0 ),
V( 99, 0x3c3d, 104, 100, 0 ),
V( 100, 0x375e, 99, 93, 0 ),
V( 101, 0x5231, 105, 102, 0 ),
V( 102, 0x4c0f, 106, 103, 0 ),
V( 103, 0x4639, 107, 104, 0 ),
V( 104, 0x415e, 103, 99, 0 ),
V( 105, 0x5627, 105, 106, 1 ),
V( 106, 0x50e7, 108, 107, 0 ),
V( 107, 0x4b85, 109, 103, 0 ),
V( 108, 0x5597, 110, 109, 0 ),
V( 109, 0x504f, 111, 107, 0 ),
V( 110, 0x5a10, 110, 111, 1 ),
V( 111, 0x5522, 112, 109, 0 ),
V( 112, 0x59eb, 112, 111, 1 ),
/*
* This last entry is used for fixed probability estimate of 0.5
* as suggested in Section 10.3 Table 5 of ITU-T Rec. T.851.
*/
V( 113, 0x5a1d, 113, 113, 0 )
};
libs/jpeg-9/jcapimin.c
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/*
* jcapimin.c
*
* Copyright (C) 1994-1998, Thomas G. Lane.
* Modified 2003-2010 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains application interface code for the compression half
* of the JPEG library. These are the "minimum" API routines that may be
* needed in either the normal full-compression case or the transcoding-only
* case.
*
* Most of the routines intended to be called directly by an application
* are in this file or in jcapistd.c. But also see jcparam.c for
* parameter-setup helper routines, jcomapi.c for routines shared by
* compression and decompression, and jctrans.c for the transcoding case.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/*
* Initialization of a JPEG compression object.
* The error manager must already be set up (in case memory manager fails).
*/
GLOBAL(void)
jpeg_CreateCompress (j_compress_ptr cinfo, int version, size_t structsize)
{
int i;
/* Guard against version mismatches between library and caller. */
cinfo->mem = NULL; /* so jpeg_destroy knows mem mgr not called */
if (version != JPEG_LIB_VERSION)
ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version);
if (structsize != SIZEOF(struct jpeg_compress_struct))
ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE,
(int) SIZEOF(struct jpeg_compress_struct), (int) structsize);
/* For debugging purposes, we zero the whole master structure.
* But the application has already set the err pointer, and may have set
* client_data, so we have to save and restore those fields.
* Note: if application hasn't set client_data, tools like Purify may
* complain here.
*/
{
struct jpeg_error_mgr * err = cinfo->err;
void * client_data = cinfo->client_data; /* ignore Purify complaint here */
MEMZERO(cinfo, SIZEOF(struct jpeg_compress_struct));
cinfo->err = err;
cinfo->client_data = client_data;
}
cinfo->is_decompressor = FALSE;
/* Initialize a memory manager instance for this object */
jinit_memory_mgr((j_common_ptr) cinfo);
/* Zero out pointers to permanent structures. */
cinfo->progress = NULL;
cinfo->dest = NULL;
cinfo->comp_info = NULL;
for (i = 0; i < NUM_QUANT_TBLS; i++) {
cinfo->quant_tbl_ptrs[i] = NULL;
cinfo->q_scale_factor[i] = 100;
}
for (i = 0; i < NUM_HUFF_TBLS; i++) {
cinfo->dc_huff_tbl_ptrs[i] = NULL;
cinfo->ac_huff_tbl_ptrs[i] = NULL;
}
/* Must do it here for emit_dqt in case jpeg_write_tables is used */
cinfo->block_size = DCTSIZE;
cinfo->natural_order = jpeg_natural_order;
cinfo->lim_Se = DCTSIZE2-1;
cinfo->script_space = NULL;
cinfo->input_gamma = 1.0; /* in case application forgets */
/* OK, I'm ready */
cinfo->global_state = CSTATE_START;
}
/*
* Destruction of a JPEG compression object
*/
GLOBAL(void)
jpeg_destroy_compress (j_compress_ptr cinfo)
{
jpeg_destroy((j_common_ptr) cinfo); /* use common routine */
}
/*
* Abort processing of a JPEG compression operation,
* but don't destroy the object itself.
*/
GLOBAL(void)
jpeg_abort_compress (j_compress_ptr cinfo)
{
jpeg_abort((j_common_ptr) cinfo); /* use common routine */
}
/*
* Forcibly suppress or un-suppress all quantization and Huffman tables.
* Marks all currently defined tables as already written (if suppress)
* or not written (if !suppress). This will control whether they get emitted
* by a subsequent jpeg_start_compress call.
*
* This routine is exported for use by applications that want to produce
* abbreviated JPEG datastreams. It logically belongs in jcparam.c, but
* since it is called by jpeg_start_compress, we put it here --- otherwise
* jcparam.o would be linked whether the application used it or not.
*/
GLOBAL(void)
jpeg_suppress_tables (j_compress_ptr cinfo, boolean suppress)
{
int i;
JQUANT_TBL * qtbl;
JHUFF_TBL * htbl;
for (i = 0; i < NUM_QUANT_TBLS; i++) {
if ((qtbl = cinfo->quant_tbl_ptrs[i]) != NULL)
qtbl->sent_table = suppress;
}
for (i = 0; i < NUM_HUFF_TBLS; i++) {
if ((htbl = cinfo->dc_huff_tbl_ptrs[i]) != NULL)
htbl->sent_table = suppress;
if ((htbl = cinfo->ac_huff_tbl_ptrs[i]) != NULL)
htbl->sent_table = suppress;
}
}
/*
* Finish JPEG compression.
*
* If a multipass operating mode was selected, this may do a great deal of
* work including most of the actual output.
*/
GLOBAL(void)
jpeg_finish_compress (j_compress_ptr cinfo)
{
JDIMENSION iMCU_row;
if (cinfo->global_state == CSTATE_SCANNING ||
cinfo->global_state == CSTATE_RAW_OK) {
/* Terminate first pass */
if (cinfo->next_scanline < cinfo->image_height)
ERREXIT(cinfo, JERR_TOO_LITTLE_DATA);
(*cinfo->master->finish_pass) (cinfo);
} else if (cinfo->global_state != CSTATE_WRCOEFS)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* Perform any remaining passes */
while (! cinfo->master->is_last_pass) {
(*cinfo->master->prepare_for_pass) (cinfo);
for (iMCU_row = 0; iMCU_row < cinfo->total_iMCU_rows; iMCU_row++) {
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) iMCU_row;
cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* We bypass the main controller and invoke coef controller directly;
* all work is being done from the coefficient buffer.
*/
if (! (*cinfo->coef->compress_data) (cinfo, (JSAMPIMAGE) NULL))
ERREXIT(cinfo, JERR_CANT_SUSPEND);
}
(*cinfo->master->finish_pass) (cinfo);
}
/* Write EOI, do final cleanup */
(*cinfo->marker->write_file_trailer) (cinfo);
(*cinfo->dest->term_destination) (cinfo);
/* We can use jpeg_abort to release memory and reset global_state */
jpeg_abort((j_common_ptr) cinfo);
}
/*
* Write a special marker.
* This is only recommended for writing COM or APPn markers.
* Must be called after jpeg_start_compress() and before
* first call to jpeg_write_scanlines() or jpeg_write_raw_data().
*/
GLOBAL(void)
jpeg_write_marker (j_compress_ptr cinfo, int marker,
const JOCTET *dataptr, unsigned int datalen)
{
JMETHOD(void, write_marker_byte, (j_compress_ptr info, int val));
if (cinfo->next_scanline != 0 ||
(cinfo->global_state != CSTATE_SCANNING &&
cinfo->global_state != CSTATE_RAW_OK &&
cinfo->global_state != CSTATE_WRCOEFS))
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
(*cinfo->marker->write_marker_header) (cinfo, marker, datalen);
write_marker_byte = cinfo->marker->write_marker_byte; /* copy for speed */
while (datalen--) {
(*write_marker_byte) (cinfo, *dataptr);
dataptr++;
}
}
/* Same, but piecemeal. */
GLOBAL(void)
jpeg_write_m_header (j_compress_ptr cinfo, int marker, unsigned int datalen)
{
if (cinfo->next_scanline != 0 ||
(cinfo->global_state != CSTATE_SCANNING &&
cinfo->global_state != CSTATE_RAW_OK &&
cinfo->global_state != CSTATE_WRCOEFS))
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
(*cinfo->marker->write_marker_header) (cinfo, marker, datalen);
}
GLOBAL(void)
jpeg_write_m_byte (j_compress_ptr cinfo, int val)
{
(*cinfo->marker->write_marker_byte) (cinfo, val);
}
/*
* Alternate compression function: just write an abbreviated table file.
* Before calling this, all parameters and a data destination must be set up.
*
* To produce a pair of files containing abbreviated tables and abbreviated
* image data, one would proceed as follows:
*
* initialize JPEG object
* set JPEG parameters
* set destination to table file
* jpeg_write_tables(cinfo);
* set destination to image file
* jpeg_start_compress(cinfo, FALSE);
* write data...
* jpeg_finish_compress(cinfo);
*
* jpeg_write_tables has the side effect of marking all tables written
* (same as jpeg_suppress_tables(..., TRUE)). Thus a subsequent start_compress
* will not re-emit the tables unless it is passed write_all_tables=TRUE.
*/
GLOBAL(void)
jpeg_write_tables (j_compress_ptr cinfo)
{
if (cinfo->global_state != CSTATE_START)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* (Re)initialize error mgr and destination modules */
(*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);
(*cinfo->dest->init_destination) (cinfo);
/* Initialize the marker writer ... bit of a crock to do it here. */
jinit_marker_writer(cinfo);
/* Write them tables! */
(*cinfo->marker->write_tables_only) (cinfo);
/* And clean up. */
(*cinfo->dest->term_destination) (cinfo);
/*
* In library releases up through v6a, we called jpeg_abort() here to free
* any working memory allocated by the destination manager and marker
* writer. Some applications had a problem with that: they allocated space
* of their own from the library memory manager, and didn't want it to go
* away during write_tables. So now we do nothing. This will cause a
* memory leak if an app calls write_tables repeatedly without doing a full
* compression cycle or otherwise resetting the JPEG object. However, that
* seems less bad than unexpectedly freeing memory in the normal case.
* An app that prefers the old behavior can call jpeg_abort for itself after
* each call to jpeg_write_tables().
*/
}
libs/jpeg-9/jcapistd.c
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/*
* jcapistd.c
*
* Copyright (C) 1994-1996, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains application interface code for the compression half
* of the JPEG library. These are the "standard" API routines that are
* used in the normal full-compression case. They are not used by a
* transcoding-only application. Note that if an application links in
* jpeg_start_compress, it will end up linking in the entire compressor.
* We thus must separate this file from jcapimin.c to avoid linking the
* whole compression library into a transcoder.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/*
* Compression initialization.
* Before calling this, all parameters and a data destination must be set up.
*
* We require a write_all_tables parameter as a failsafe check when writing
* multiple datastreams from the same compression object. Since prior runs
* will have left all the tables marked sent_table=TRUE, a subsequent run
* would emit an abbreviated stream (no tables) by default. This may be what
* is wanted, but for safety's sake it should not be the default behavior:
* programmers should have to make a deliberate choice to emit abbreviated
* images. Therefore the documentation and examples should encourage people
* to pass write_all_tables=TRUE; then it will take active thought to do the
* wrong thing.
*/
GLOBAL(void)
jpeg_start_compress (j_compress_ptr cinfo, boolean write_all_tables)
{
if (cinfo->global_state != CSTATE_START)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (write_all_tables)
jpeg_suppress_tables(cinfo, FALSE); /* mark all tables to be written */
/* (Re)initialize error mgr and destination modules */
(*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);
(*cinfo->dest->init_destination) (cinfo);
/* Perform master selection of active modules */
jinit_compress_master(cinfo);
/* Set up for the first pass */
(*cinfo->master->prepare_for_pass) (cinfo);
/* Ready for application to drive first pass through jpeg_write_scanlines
* or jpeg_write_raw_data.
*/
cinfo->next_scanline = 0;
cinfo->global_state = (cinfo->raw_data_in ? CSTATE_RAW_OK : CSTATE_SCANNING);
}
/*
* Write some scanlines of data to the JPEG compressor.
*
* The return value will be the number of lines actually written.
* This should be less than the supplied num_lines only in case that
* the data destination module has requested suspension of the compressor,
* or if more than image_height scanlines are passed in.
*
* Note: we warn about excess calls to jpeg_write_scanlines() since
* this likely signals an application programmer error. However,
* excess scanlines passed in the last valid call are *silently* ignored,
* so that the application need not adjust num_lines for end-of-image
* when using a multiple-scanline buffer.
*/
GLOBAL(JDIMENSION)
jpeg_write_scanlines (j_compress_ptr cinfo, JSAMPARRAY scanlines,
JDIMENSION num_lines)
{
JDIMENSION row_ctr, rows_left;
if (cinfo->global_state != CSTATE_SCANNING)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->next_scanline >= cinfo->image_height)
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->next_scanline;
cinfo->progress->pass_limit = (long) cinfo->image_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Give master control module another chance if this is first call to
* jpeg_write_scanlines. This lets output of the frame/scan headers be
* delayed so that application can write COM, etc, markers between
* jpeg_start_compress and jpeg_write_scanlines.
*/
if (cinfo->master->call_pass_startup)
(*cinfo->master->pass_startup) (cinfo);
/* Ignore any extra scanlines at bottom of image. */
rows_left = cinfo->image_height - cinfo->next_scanline;
if (num_lines > rows_left)
num_lines = rows_left;
row_ctr = 0;
(*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, num_lines);
cinfo->next_scanline += row_ctr;
return row_ctr;
}
/*
* Alternate entry point to write raw data.
* Processes exactly one iMCU row per call, unless suspended.
*/
GLOBAL(JDIMENSION)
jpeg_write_raw_data (j_compress_ptr cinfo, JSAMPIMAGE data,
JDIMENSION num_lines)
{
JDIMENSION lines_per_iMCU_row;
if (cinfo->global_state != CSTATE_RAW_OK)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->next_scanline >= cinfo->image_height) {
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
return 0;
}
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->next_scanline;
cinfo->progress->pass_limit = (long) cinfo->image_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Give master control module another chance if this is first call to
* jpeg_write_raw_data. This lets output of the frame/scan headers be
* delayed so that application can write COM, etc, markers between
* jpeg_start_compress and jpeg_write_raw_data.
*/
if (cinfo->master->call_pass_startup)
(*cinfo->master->pass_startup) (cinfo);
/* Verify that at least one iMCU row has been passed. */
lines_per_iMCU_row = cinfo->max_v_samp_factor * DCTSIZE;
if (num_lines < lines_per_iMCU_row)
ERREXIT(cinfo, JERR_BUFFER_SIZE);
/* Directly compress the row. */
if (! (*cinfo->coef->compress_data) (cinfo, data)) {
/* If compressor did not consume the whole row, suspend processing. */
return 0;
}
/* OK, we processed one iMCU row. */
cinfo->next_scanline += lines_per_iMCU_row;
return lines_per_iMCU_row;
}
libs/jpeg-9/jcarith.c
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/*
* jcarith.c
*
* Developed 1997-2012 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains portable arithmetic entropy encoding routines for JPEG
* (implementing the ISO/IEC IS 10918-1 and CCITT Recommendation ITU-T T.81).
*
* Both sequential and progressive modes are supported in this single module.
*
* Suspension is not currently supported in this module.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* Expanded entropy encoder object for arithmetic encoding. */
typedef struct {
struct jpeg_entropy_encoder pub; /* public fields */
INT32 c; /* C register, base of coding interval, layout as in sec. D.1.3 */
INT32 a; /* A register, normalized size of coding interval */
INT32 sc; /* counter for stacked 0xFF values which might overflow */
INT32 zc; /* counter for pending 0x00 output values which might *
* be discarded at the end ("Pacman" termination) */
int ct; /* bit shift counter, determines when next byte will be written */
int buffer; /* buffer for most recent output byte != 0xFF */
int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */
int dc_context[MAX_COMPS_IN_SCAN]; /* context index for DC conditioning */
unsigned int restarts_to_go; /* MCUs left in this restart interval */
int next_restart_num; /* next restart number to write (0-7) */
/* Pointers to statistics areas (these workspaces have image lifespan) */
unsigned char * dc_stats[NUM_ARITH_TBLS];
unsigned char * ac_stats[NUM_ARITH_TBLS];
/* Statistics bin for coding with fixed probability 0.5 */
unsigned char fixed_bin[4];
} arith_entropy_encoder;
typedef arith_entropy_encoder * arith_entropy_ptr;
/* The following two definitions specify the allocation chunk size
* for the statistics area.
* According to sections F.1.4.4.1.3 and F.1.4.4.2, we need at least
* 49 statistics bins for DC, and 245 statistics bins for AC coding.
*
* We use a compact representation with 1 byte per statistics bin,
* thus the numbers directly represent byte sizes.
* This 1 byte per statistics bin contains the meaning of the MPS
* (more probable symbol) in the highest bit (mask 0x80), and the
* index into the probability estimation state machine table
* in the lower bits (mask 0x7F).
*/
#define DC_STAT_BINS 64
#define AC_STAT_BINS 256
/* NOTE: Uncomment the following #define if you want to use the
* given formula for calculating the AC conditioning parameter Kx
* for spectral selection progressive coding in section G.1.3.2
* of the spec (Kx = Kmin + SRL (8 + Se - Kmin) 4).
* Although the spec and P&M authors claim that this "has proven
* to give good results for 8 bit precision samples", I'm not
* convinced yet that this is really beneficial.
* Early tests gave only very marginal compression enhancements
* (a few - around 5 or so - bytes even for very large files),
* which would turn out rather negative if we'd suppress the
* DAC (Define Arithmetic Conditioning) marker segments for
* the default parameters in the future.
* Note that currently the marker writing module emits 12-byte
* DAC segments for a full-component scan in a color image.
* This is not worth worrying about IMHO. However, since the
* spec defines the default values to be used if the tables
* are omitted (unlike Huffman tables, which are required
* anyway), one might optimize this behaviour in the future,
* and then it would be disadvantageous to use custom tables if
* they don't provide sufficient gain to exceed the DAC size.
*
* On the other hand, I'd consider it as a reasonable result
* that the conditioning has no significant influence on the
* compression performance. This means that the basic
* statistical model is already rather stable.
*
* Thus, at the moment, we use the default conditioning values
* anyway, and do not use the custom formula.
*
#define CALCULATE_SPECTRAL_CONDITIONING
*/
/* IRIGHT_SHIFT is like RIGHT_SHIFT, but works on int rather than INT32.
* We assume that int right shift is unsigned if INT32 right shift is,
* which should be safe.
*/
#ifdef RIGHT_SHIFT_IS_UNSIGNED
#define ISHIFT_TEMPS int ishift_temp;
#define IRIGHT_SHIFT(x,shft) \
((ishift_temp = (x)) < 0 ? \
(ishift_temp >> (shft)) | ((~0) << (16-(shft))) : \
(ishift_temp >> (shft)))
#else
#define ISHIFT_TEMPS
#define IRIGHT_SHIFT(x,shft) ((x) >> (shft))
#endif
LOCAL(void)
emit_byte (int val, j_compress_ptr cinfo)
/* Write next output byte; we do not support suspension in this module. */
{
struct jpeg_destination_mgr * dest = cinfo->dest;
*dest->next_output_byte++ = (JOCTET) val;
if (--dest->free_in_buffer == 0)
if (! (*dest->empty_output_buffer) (cinfo))
ERREXIT(cinfo, JERR_CANT_SUSPEND);
}
/*
* Finish up at the end of an arithmetic-compressed scan.
*/
METHODDEF(void)
finish_pass (j_compress_ptr cinfo)
{
arith_entropy_ptr e = (arith_entropy_ptr) cinfo->entropy;
INT32 temp;
/* Section D.1.8: Termination of encoding */
/* Find the e->c in the coding interval with the largest
* number of trailing zero bits */
if ((temp = (e->a - 1 + e->c) & 0xFFFF0000L) < e->c)
e->c = temp + 0x8000L;
else
e->c = temp;
/* Send remaining bytes to output */
e->c <<= e->ct;
if (e->c & 0xF8000000L) {
/* One final overflow has to be handled */
if (e->buffer >= 0) {
if (e->zc)
do emit_byte(0x00, cinfo);
while (--e->zc);
emit_byte(e->buffer + 1, cinfo);
if (e->buffer + 1 == 0xFF)
emit_byte(0x00, cinfo);
}
e->zc += e->sc; /* carry-over converts stacked 0xFF bytes to 0x00 */
e->sc = 0;
} else {
if (e->buffer == 0)
++e->zc;
else if (e->buffer >= 0) {
if (e->zc)
do emit_byte(0x00, cinfo);
while (--e->zc);
emit_byte(e->buffer, cinfo);
}
if (e->sc) {
if (e->zc)
do emit_byte(0x00, cinfo);
while (--e->zc);
do {
emit_byte(0xFF, cinfo);
emit_byte(0x00, cinfo);
} while (--e->sc);
}
}
/* Output final bytes only if they are not 0x00 */
if (e->c & 0x7FFF800L) {
if (e->zc) /* output final pending zero bytes */
do emit_byte(0x00, cinfo);
while (--e->zc);
emit_byte((e->c >> 19) & 0xFF, cinfo);
if (((e->c >> 19) & 0xFF) == 0xFF)
emit_byte(0x00, cinfo);
if (e->c & 0x7F800L) {
emit_byte((e->c >> 11) & 0xFF, cinfo);
if (((e->c >> 11) & 0xFF) == 0xFF)
emit_byte(0x00, cinfo);
}
}
}
/*
* The core arithmetic encoding routine (common in JPEG and JBIG).
* This needs to go as fast as possible.
* Machine-dependent optimization facilities
* are not utilized in this portable implementation.
* However, this code should be fairly efficient and
* may be a good base for further optimizations anyway.
*
* Parameter 'val' to be encoded may be 0 or 1 (binary decision).
*
* Note: I've added full "Pacman" termination support to the
* byte output routines, which is equivalent to the optional
* Discard_final_zeros procedure (Figure D.15) in the spec.
* Thus, we always produce the shortest possible output
* stream compliant to the spec (no trailing zero bytes,
* except for FF stuffing).
*
* I've also introduced a new scheme for accessing
* the probability estimation state machine table,
* derived from Markus Kuhn's JBIG implementation.
*/
LOCAL(void)
arith_encode (j_compress_ptr cinfo, unsigned char *st, int val)
{
register arith_entropy_ptr e = (arith_entropy_ptr) cinfo->entropy;
register unsigned char nl, nm;
register INT32 qe, temp;
register int sv;
/* Fetch values from our compact representation of Table D.3(D.2):
* Qe values and probability estimation state machine
*/
sv = *st;
qe = jpeg_aritab[sv & 0x7F]; /* => Qe_Value */
nl = qe & 0xFF; qe >>= 8; /* Next_Index_LPS + Switch_MPS */
nm = qe & 0xFF; qe >>= 8; /* Next_Index_MPS */
/* Encode & estimation procedures per sections D.1.4 & D.1.5 */
e->a -= qe;
if (val != (sv >> 7)) {
/* Encode the less probable symbol */
if (e->a >= qe) {
/* If the interval size (qe) for the less probable symbol (LPS)
* is larger than the interval size for the MPS, then exchange
* the two symbols for coding efficiency, otherwise code the LPS
* as usual: */
e->c += e->a;
e->a = qe;
}
*st = (sv & 0x80) ^ nl; /* Estimate_after_LPS */
} else {
/* Encode the more probable symbol */
if (e->a >= 0x8000L)
return; /* A >= 0x8000 -> ready, no renormalization required */
if (e->a < qe) {
/* If the interval size (qe) for the less probable symbol (LPS)
* is larger than the interval size for the MPS, then exchange
* the two symbols for coding efficiency: */
e->c += e->a;
e->a = qe;
}
*st = (sv & 0x80) ^ nm; /* Estimate_after_MPS */
}
/* Renormalization & data output per section D.1.6 */
do {
e->a <<= 1;
e->c <<= 1;
if (--e->ct == 0) {
/* Another byte is ready for output */
temp = e->c >> 19;
if (temp > 0xFF) {
/* Handle overflow over all stacked 0xFF bytes */
if (e->buffer >= 0) {
if (e->zc)
do emit_byte(0x00, cinfo);
while (--e->zc);
emit_byte(e->buffer + 1, cinfo);
if (e->buffer + 1 == 0xFF)
emit_byte(0x00, cinfo);
}
e->zc += e->sc; /* carry-over converts stacked 0xFF bytes to 0x00 */
e->sc = 0;
/* Note: The 3 spacer bits in the C register guarantee
* that the new buffer byte can't be 0xFF here
* (see page 160 in the P&M JPEG book). */
e->buffer = temp & 0xFF; /* new output byte, might overflow later */
} else if (temp == 0xFF) {
++e->sc; /* stack 0xFF byte (which might overflow later) */
} else {
/* Output all stacked 0xFF bytes, they will not overflow any more */
if (e->buffer == 0)
++e->zc;
else if (e->buffer >= 0) {
if (e->zc)
do emit_byte(0x00, cinfo);
while (--e->zc);
emit_byte(e->buffer, cinfo);
}
if (e->sc) {
if (e->zc)
do emit_byte(0x00, cinfo);
while (--e->zc);
do {
emit_byte(0xFF, cinfo);
emit_byte(0x00, cinfo);
} while (--e->sc);
}
e->buffer = temp & 0xFF; /* new output byte (can still overflow) */
}
e->c &= 0x7FFFFL;
e->ct += 8;
}
} while (e->a < 0x8000L);
}
/*
* Emit a restart marker & resynchronize predictions.
*/
LOCAL(void)
emit_restart (j_compress_ptr cinfo, int restart_num)
{
arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
int ci;
jpeg_component_info * compptr;
finish_pass(cinfo);
emit_byte(0xFF, cinfo);
emit_byte(JPEG_RST0 + restart_num, cinfo);
/* Re-initialize statistics areas */
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
/* DC needs no table for refinement scan */
if (cinfo->Ss == 0 && cinfo->Ah == 0) {
MEMZERO(entropy->dc_stats[compptr->dc_tbl_no], DC_STAT_BINS);
/* Reset DC predictions to 0 */
entropy->last_dc_val[ci] = 0;
entropy->dc_context[ci] = 0;
}
/* AC needs no table when not present */
if (cinfo->Se) {
MEMZERO(entropy->ac_stats[compptr->ac_tbl_no], AC_STAT_BINS);
}
}
/* Reset arithmetic encoding variables */
entropy->c = 0;
entropy->a = 0x10000L;
entropy->sc = 0;
entropy->zc = 0;
entropy->ct = 11;
entropy->buffer = -1; /* empty */
}
/*
* MCU encoding for DC initial scan (either spectral selection,
* or first pass of successive approximation).
*/
METHODDEF(boolean)
encode_mcu_DC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
{
arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
JBLOCKROW block;
unsigned char *st;
int blkn, ci, tbl;
int v, v2, m;
ISHIFT_TEMPS
/* Emit restart marker if needed */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0) {
emit_restart(cinfo, entropy->next_restart_num);
entropy->restarts_to_go = cinfo->restart_interval;
entropy->next_restart_num++;
entropy->next_restart_num &= 7;
}
entropy->restarts_to_go--;
}
/* Encode the MCU data blocks */
for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
block = MCU_data[blkn];
ci = cinfo->MCU_membership[blkn];
tbl = cinfo->cur_comp_info[ci]->dc_tbl_no;
/* Compute the DC value after the required point transform by Al.
* This is simply an arithmetic right shift.
*/
m = IRIGHT_SHIFT((int) ((*block)[0]), cinfo->Al);
/* Sections F.1.4.1 & F.1.4.4.1: Encoding of DC coefficients */
/* Table F.4: Point to statistics bin S0 for DC coefficient coding */
st = entropy->dc_stats[tbl] + entropy->dc_context[ci];
/* Figure F.4: Encode_DC_DIFF */
if ((v = m - entropy->last_dc_val[ci]) == 0) {
arith_encode(cinfo, st, 0);
entropy->dc_context[ci] = 0; /* zero diff category */
} else {
entropy->last_dc_val[ci] = m;
arith_encode(cinfo, st, 1);
/* Figure F.6: Encoding nonzero value v */
/* Figure F.7: Encoding the sign of v */
if (v > 0) {
arith_encode(cinfo, st + 1, 0); /* Table F.4: SS = S0 + 1 */
st += 2; /* Table F.4: SP = S0 + 2 */
entropy->dc_context[ci] = 4; /* small positive diff category */
} else {
v = -v;
arith_encode(cinfo, st + 1, 1); /* Table F.4: SS = S0 + 1 */
st += 3; /* Table F.4: SN = S0 + 3 */
entropy->dc_context[ci] = 8; /* small negative diff category */
}
/* Figure F.8: Encoding the magnitude category of v */
m = 0;
if (v -= 1) {
arith_encode(cinfo, st, 1);
m = 1;
v2 = v;
st = entropy->dc_stats[tbl] + 20; /* Table F.4: X1 = 20 */
while (v2 >>= 1) {
arith_encode(cinfo, st, 1);
m <<= 1;
st += 1;
}
}
arith_encode(cinfo, st, 0);
/* Section F.1.4.4.1.2: Establish dc_context conditioning category */
if (m < (int) ((1L << cinfo->arith_dc_L[tbl]) >> 1))
entropy->dc_context[ci] = 0; /* zero diff category */
else if (m > (int) ((1L << cinfo->arith_dc_U[tbl]) >> 1))
entropy->dc_context[ci] += 8; /* large diff category */
/* Figure F.9: Encoding the magnitude bit pattern of v */
st += 14;
while (m >>= 1)
arith_encode(cinfo, st, (m & v) ? 1 : 0);
}
}
return TRUE;
}
/*
* MCU encoding for AC initial scan (either spectral selection,
* or first pass of successive approximation).
*/
METHODDEF(boolean)
encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
{
arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
JBLOCKROW block;
unsigned char *st;
int tbl, k, ke;
int v, v2, m;
const int * natural_order;
/* Emit restart marker if needed */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0) {
emit_restart(cinfo, entropy->next_restart_num);
entropy->restarts_to_go = cinfo->restart_interval;
entropy->next_restart_num++;
entropy->next_restart_num &= 7;
}
entropy->restarts_to_go--;
}
natural_order = cinfo->natural_order;
/* Encode the MCU data block */
block = MCU_data[0];
tbl = cinfo->cur_comp_info[0]->ac_tbl_no;
/* Sections F.1.4.2 & F.1.4.4.2: Encoding of AC coefficients */
/* Establish EOB (end-of-block) index */
ke = cinfo->Se;
do {
/* We must apply the point transform by Al. For AC coefficients this
* is an integer division with rounding towards 0. To do this portably
* in C, we shift after obtaining the absolute value.
*/
if ((v = (*block)[natural_order[ke]]) >= 0) {
if (v >>= cinfo->Al) break;
} else {
v = -v;
if (v >>= cinfo->Al) break;
}
} while (--ke);
/* Figure F.5: Encode_AC_Coefficients */
for (k = cinfo->Ss - 1; k < ke;) {
st = entropy->ac_stats[tbl] + 3 * k;
arith_encode(cinfo, st, 0); /* EOB decision */
for (;;) {
if ((v = (*block)[natural_order[++k]]) >= 0) {
if (v >>= cinfo->Al) {
arith_encode(cinfo, st + 1, 1);
arith_encode(cinfo, entropy->fixed_bin, 0);
break;
}
} else {
v = -v;
if (v >>= cinfo->Al) {
arith_encode(cinfo, st + 1, 1);
arith_encode(cinfo, entropy->fixed_bin, 1);
break;
}
}
arith_encode(cinfo, st + 1, 0);
st += 3;
}
st += 2;
/* Figure F.8: Encoding the magnitude category of v */
m = 0;
if (v -= 1) {
arith_encode(cinfo, st, 1);
m = 1;
v2 = v;
if (v2 >>= 1) {
arith_encode(cinfo, st, 1);
m <<= 1;
st = entropy->ac_stats[tbl] +
(k <= cinfo->arith_ac_K[tbl] ? 189 : 217);
while (v2 >>= 1) {
arith_encode(cinfo, st, 1);
m <<= 1;
st += 1;
}
}
}
arith_encode(cinfo, st, 0);
/* Figure F.9: Encoding the magnitude bit pattern of v */
st += 14;
while (m >>= 1)
arith_encode(cinfo, st, (m & v) ? 1 : 0);
}
/* Encode EOB decision only if k < cinfo->Se */
if (k < cinfo->Se) {
st = entropy->ac_stats[tbl] + 3 * k;
arith_encode(cinfo, st, 1);
}
return TRUE;
}
/*
* MCU encoding for DC successive approximation refinement scan.
*/
METHODDEF(boolean)
encode_mcu_DC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
{
arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
unsigned char *st;
int Al, blkn;
/* Emit restart marker if needed */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0) {
emit_restart(cinfo, entropy->next_restart_num);
entropy->restarts_to_go = cinfo->restart_interval;
entropy->next_restart_num++;
entropy->next_restart_num &= 7;
}
entropy->restarts_to_go--;
}
st = entropy->fixed_bin; /* use fixed probability estimation */
Al = cinfo->Al;
/* Encode the MCU data blocks */
for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
/* We simply emit the Al'th bit of the DC coefficient value. */
arith_encode(cinfo, st, (MCU_data[blkn][0][0] >> Al) & 1);
}
return TRUE;
}
/*
* MCU encoding for AC successive approximation refinement scan.
*/
METHODDEF(boolean)
encode_mcu_AC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
{
arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
JBLOCKROW block;
unsigned char *st;
int tbl, k, ke, kex;
int v;
const int * natural_order;
/* Emit restart marker if needed */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0) {
emit_restart(cinfo, entropy->next_restart_num);
entropy->restarts_to_go = cinfo->restart_interval;
entropy->next_restart_num++;
entropy->next_restart_num &= 7;
}
entropy->restarts_to_go--;
}
natural_order = cinfo->natural_order;
/* Encode the MCU data block */
block = MCU_data[0];
tbl = cinfo->cur_comp_info[0]->ac_tbl_no;
/* Section G.1.3.3: Encoding of AC coefficients */
/* Establish EOB (end-of-block) index */
ke = cinfo->Se;
do {
/* We must apply the point transform by Al. For AC coefficients this
* is an integer division with rounding towards 0. To do this portably
* in C, we shift after obtaining the absolute value.
*/
if ((v = (*block)[natural_order[ke]]) >= 0) {
if (v >>= cinfo->Al) break;
} else {
v = -v;
if (v >>= cinfo->Al) break;
}
} while (--ke);
/* Establish EOBx (previous stage end-of-block) index */
for (kex = ke; kex > 0; kex--)
if ((v = (*block)[natural_order[kex]]) >= 0) {
if (v >>= cinfo->Ah) break;
} else {
v = -v;
if (v >>= cinfo->Ah) break;
}
/* Figure G.10: Encode_AC_Coefficients_SA */
for (k = cinfo->Ss - 1; k < ke;) {
st = entropy->ac_stats[tbl] + 3 * k;
if (k >= kex)
arith_encode(cinfo, st, 0); /* EOB decision */
for (;;) {
if ((v = (*block)[natural_order[++k]]) >= 0) {
if (v >>= cinfo->Al) {
if (v >> 1) /* previously nonzero coef */
arith_encode(cinfo, st + 2, (v & 1));
else { /* newly nonzero coef */
arith_encode(cinfo, st + 1, 1);
arith_encode(cinfo, entropy->fixed_bin, 0);
}
break;
}
} else {
v = -v;
if (v >>= cinfo->Al) {
if (v >> 1) /* previously nonzero coef */
arith_encode(cinfo, st + 2, (v & 1));
else { /* newly nonzero coef */
arith_encode(cinfo, st + 1, 1);
arith_encode(cinfo, entropy->fixed_bin, 1);
}
break;
}
}
arith_encode(cinfo, st + 1, 0);
st += 3;
}
}
/* Encode EOB decision only if k < cinfo->Se */
if (k < cinfo->Se) {
st = entropy->ac_stats[tbl] + 3 * k;
arith_encode(cinfo, st, 1);
}
return TRUE;
}
/*
* Encode and output one MCU's worth of arithmetic-compressed coefficients.
*/
METHODDEF(boolean)
encode_mcu (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
{
arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
jpeg_component_info * compptr;
JBLOCKROW block;
unsigned char *st;
int blkn, ci, tbl, k, ke;
int v, v2, m;
const int * natural_order;
/* Emit restart marker if needed */
if (cinfo->restart_interval) {
if (entropy->restarts_to_go == 0) {
emit_restart(cinfo, entropy->next_restart_num);
entropy->restarts_to_go = cinfo->restart_interval;
entropy->next_restart_num++;
entropy->next_restart_num &= 7;
}
entropy->restarts_to_go--;
}
natural_order = cinfo->natural_order;
/* Encode the MCU data blocks */
for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
block = MCU_data[blkn];
ci = cinfo->MCU_membership[blkn];
compptr = cinfo->cur_comp_info[ci];
/* Sections F.1.4.1 & F.1.4.4.1: Encoding of DC coefficients */
tbl = compptr->dc_tbl_no;
/* Table F.4: Point to statistics bin S0 for DC coefficient coding */
st = entropy->dc_stats[tbl] + entropy->dc_context[ci];
/* Figure F.4: Encode_DC_DIFF */
if ((v = (*block)[0] - entropy->last_dc_val[ci]) == 0) {
arith_encode(cinfo, st, 0);
entropy->dc_context[ci] = 0; /* zero diff category */
} else {
entropy->last_dc_val[ci] = (*block)[0];
arith_encode(cinfo, st, 1);
/* Figure F.6: Encoding nonzero value v */
/* Figure F.7: Encoding the sign of v */
if (v > 0) {
arith_encode(cinfo, st + 1, 0); /* Table F.4: SS = S0 + 1 */
st += 2; /* Table F.4: SP = S0 + 2 */
entropy->dc_context[ci] = 4; /* small positive diff category */
} else {
v = -v;
arith_encode(cinfo, st + 1, 1); /* Table F.4: SS = S0 + 1 */
st += 3; /* Table F.4: SN = S0 + 3 */
entropy->dc_context[ci] = 8; /* small negative diff category */
}
/* Figure F.8: Encoding the magnitude category of v */
m = 0;
if (v -= 1) {
arith_encode(cinfo, st, 1);
m = 1;
v2 = v;
st = entropy->dc_stats[tbl] + 20; /* Table F.4: X1 = 20 */
while (v2 >>= 1) {
arith_encode(cinfo, st, 1);
m <<= 1;
st += 1;
}
}
arith_encode(cinfo, st, 0);
/* Section F.1.4.4.1.2: Establish dc_context conditioning category */
if (m < (int) ((1L << cinfo->arith_dc_L[tbl]) >> 1))
entropy->dc_context[ci] = 0; /* zero diff category */
else if (m > (int) ((1L << cinfo->arith_dc_U[tbl]) >> 1))
entropy->dc_context[ci] += 8; /* large diff category */
/* Figure F.9: Encoding the magnitude bit pattern of v */
st += 14;
while (m >>= 1)
arith_encode(cinfo, st, (m & v) ? 1 : 0);
}
/* Sections F.1.4.2 & F.1.4.4.2: Encoding of AC coefficients */
if ((ke = cinfo->lim_Se) == 0) continue;
tbl = compptr->ac_tbl_no;
/* Establish EOB (end-of-block) index */
do {
if ((*block)[natural_order[ke]]) break;
} while (--ke);
/* Figure F.5: Encode_AC_Coefficients */
for (k = 0; k < ke;) {
st = entropy->ac_stats[tbl] + 3 * k;
arith_encode(cinfo, st, 0); /* EOB decision */
while ((v = (*block)[natural_order[++k]]) == 0) {
arith_encode(cinfo, st + 1, 0);
st += 3;
}
arith_encode(cinfo, st + 1, 1);
/* Figure F.6: Encoding nonzero value v */
/* Figure F.7: Encoding the sign of v */
if (v > 0) {
arith_encode(cinfo, entropy->fixed_bin, 0);
} else {
v = -v;
arith_encode(cinfo, entropy->fixed_bin, 1);
}
st += 2;
/* Figure F.8: Encoding the magnitude category of v */
m = 0;
if (v -= 1) {
arith_encode(cinfo, st, 1);
m = 1;
v2 = v;
if (v2 >>= 1) {
arith_encode(cinfo, st, 1);
m <<= 1;
st = entropy->ac_stats[tbl] +
(k <= cinfo->arith_ac_K[tbl] ? 189 : 217);
while (v2 >>= 1) {
arith_encode(cinfo, st, 1);
m <<= 1;
st += 1;
}
}
}
arith_encode(cinfo, st, 0);
/* Figure F.9: Encoding the magnitude bit pattern of v */
st += 14;
while (m >>= 1)
arith_encode(cinfo, st, (m & v) ? 1 : 0);
}
/* Encode EOB decision only if k < cinfo->lim_Se */
if (k < cinfo->lim_Se) {
st = entropy->ac_stats[tbl] + 3 * k;
arith_encode(cinfo, st, 1);
}
}
return TRUE;
}
/*
* Initialize for an arithmetic-compressed scan.
*/
METHODDEF(void)
start_pass (j_compress_ptr cinfo, boolean gather_statistics)
{
arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
int ci, tbl;
jpeg_component_info * compptr;
if (gather_statistics)
/* Make sure to avoid that in the master control logic!
* We are fully adaptive here and need no extra
* statistics gathering pass!
*/
ERREXIT(cinfo, JERR_NOT_COMPILED);
/* We assume jcmaster.c already validated the progressive scan parameters. */
/* Select execution routines */
if (cinfo->progressive_mode) {
if (cinfo->Ah == 0) {
if (cinfo->Ss == 0)
entropy->pub.encode_mcu = encode_mcu_DC_first;
else
entropy->pub.encode_mcu = encode_mcu_AC_first;
} else {
if (cinfo->Ss == 0)
entropy->pub.encode_mcu = encode_mcu_DC_refine;
else
entropy->pub.encode_mcu = encode_mcu_AC_refine;
}
} else
entropy->pub.encode_mcu = encode_mcu;
/* Allocate & initialize requested statistics areas */
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
/* DC needs no table for refinement scan */
if (cinfo->Ss == 0 && cinfo->Ah == 0) {
tbl = compptr->dc_tbl_no;
if (tbl < 0 || tbl >= NUM_ARITH_TBLS)
ERREXIT1(cinfo, JERR_NO_ARITH_TABLE, tbl);
if (entropy->dc_stats[tbl] == NULL)
entropy->dc_stats[tbl] = (unsigned char *) (*cinfo->mem->alloc_small)
((j_common_ptr) cinfo, JPOOL_IMAGE, DC_STAT_BINS);
MEMZERO(entropy->dc_stats[tbl], DC_STAT_BINS);
/* Initialize DC predictions to 0 */
entropy->last_dc_val[ci] = 0;
entropy->dc_context[ci] = 0;
}
/* AC needs no table when not present */
if (cinfo->Se) {
tbl = compptr->ac_tbl_no;
if (tbl < 0 || tbl >= NUM_ARITH_TBLS)
ERREXIT1(cinfo, JERR_NO_ARITH_TABLE, tbl);
if (entropy->ac_stats[tbl] == NULL)
entropy->ac_stats[tbl] = (unsigned char *) (*cinfo->mem->alloc_small)
((j_common_ptr) cinfo, JPOOL_IMAGE, AC_STAT_BINS);
MEMZERO(entropy->ac_stats[tbl], AC_STAT_BINS);
#ifdef CALCULATE_SPECTRAL_CONDITIONING
if (cinfo->progressive_mode)
/* Section G.1.3.2: Set appropriate arithmetic conditioning value Kx */
cinfo->arith_ac_K[tbl] = cinfo->Ss + ((8 + cinfo->Se - cinfo->Ss) >> 4);
#endif
}
}
/* Initialize arithmetic encoding variables */
entropy->c = 0;
entropy->a = 0x10000L;
entropy->sc = 0;
entropy->zc = 0;
entropy->ct = 11;
entropy->buffer = -1; /* empty */
/* Initialize restart stuff */
entropy->restarts_to_go = cinfo->restart_interval;
entropy->next_restart_num = 0;
}
/*
* Module initialization routine for arithmetic entropy encoding.
*/
GLOBAL(void)
jinit_arith_encoder (j_compress_ptr cinfo)
{
arith_entropy_ptr entropy;
int i;
entropy = (arith_entropy_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(arith_entropy_encoder));
cinfo->entropy = &entropy->pub;
entropy->pub.start_pass = start_pass;
entropy->pub.finish_pass = finish_pass;
/* Mark tables unallocated */
for (i = 0; i < NUM_ARITH_TBLS; i++) {
entropy->dc_stats[i] = NULL;
entropy->ac_stats[i] = NULL;
}
/* Initialize index for fixed probability estimation */
entropy->fixed_bin[0] = 113;
}
libs/jpeg-9/jccoefct.c
-454
View File
@@ -1,454 +0,0 @@
/*
* jccoefct.c
*
* Copyright (C) 1994-1997, Thomas G. Lane.
* Modified 2003-2011 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains the coefficient buffer controller for compression.
* This controller is the top level of the JPEG compressor proper.
* The coefficient buffer lies between forward-DCT and entropy encoding steps.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* We use a full-image coefficient buffer when doing Huffman optimization,
* and also for writing multiple-scan JPEG files. In all cases, the DCT
* step is run during the first pass, and subsequent passes need only read
* the buffered coefficients.
*/
#ifdef ENTROPY_OPT_SUPPORTED
#define FULL_COEF_BUFFER_SUPPORTED
#else
#ifdef C_MULTISCAN_FILES_SUPPORTED
#define FULL_COEF_BUFFER_SUPPORTED
#endif
#endif
/* Private buffer controller object */
typedef struct {
struct jpeg_c_coef_controller pub; /* public fields */
JDIMENSION iMCU_row_num; /* iMCU row # within image */
JDIMENSION mcu_ctr; /* counts MCUs processed in current row */
int MCU_vert_offset; /* counts MCU rows within iMCU row */
int MCU_rows_per_iMCU_row; /* number of such rows needed */
/* For single-pass compression, it's sufficient to buffer just one MCU
* (although this may prove a bit slow in practice). We allocate a
* workspace of C_MAX_BLOCKS_IN_MCU coefficient blocks, and reuse it for each
* MCU constructed and sent. (On 80x86, the workspace is FAR even though
* it's not really very big; this is to keep the module interfaces unchanged
* when a large coefficient buffer is necessary.)
* In multi-pass modes, this array points to the current MCU's blocks
* within the virtual arrays.
*/
JBLOCKROW MCU_buffer[C_MAX_BLOCKS_IN_MCU];
/* In multi-pass modes, we need a virtual block array for each component. */
jvirt_barray_ptr whole_image[MAX_COMPONENTS];
} my_coef_controller;
typedef my_coef_controller * my_coef_ptr;
/* Forward declarations */
METHODDEF(boolean) compress_data
JPP((j_compress_ptr cinfo, JSAMPIMAGE input_buf));
#ifdef FULL_COEF_BUFFER_SUPPORTED
METHODDEF(boolean) compress_first_pass
JPP((j_compress_ptr cinfo, JSAMPIMAGE input_buf));
METHODDEF(boolean) compress_output
JPP((j_compress_ptr cinfo, JSAMPIMAGE input_buf));
#endif
LOCAL(void)
start_iMCU_row (j_compress_ptr cinfo)
/* Reset within-iMCU-row counters for a new row */
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
/* In an interleaved scan, an MCU row is the same as an iMCU row.
* In a noninterleaved scan, an iMCU row has v_samp_factor MCU rows.
* But at the bottom of the image, process only what's left.
*/
if (cinfo->comps_in_scan > 1) {
coef->MCU_rows_per_iMCU_row = 1;
} else {
if (coef->iMCU_row_num < (cinfo->total_iMCU_rows-1))
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor;
else
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->last_row_height;
}
coef->mcu_ctr = 0;
coef->MCU_vert_offset = 0;
}
/*
* Initialize for a processing pass.
*/
METHODDEF(void)
start_pass_coef (j_compress_ptr cinfo, J_BUF_MODE pass_mode)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
coef->iMCU_row_num = 0;
start_iMCU_row(cinfo);
switch (pass_mode) {
case JBUF_PASS_THRU:
if (coef->whole_image[0] != NULL)
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
coef->pub.compress_data = compress_data;
break;
#ifdef FULL_COEF_BUFFER_SUPPORTED
case JBUF_SAVE_AND_PASS:
if (coef->whole_image[0] == NULL)
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
coef->pub.compress_data = compress_first_pass;
break;
case JBUF_CRANK_DEST:
if (coef->whole_image[0] == NULL)
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
coef->pub.compress_data = compress_output;
break;
#endif
default:
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
break;
}
}
/*
* Process some data in the single-pass case.
* We process the equivalent of one fully interleaved MCU row ("iMCU" row)
* per call, ie, v_samp_factor block rows for each component in the image.
* Returns TRUE if the iMCU row is completed, FALSE if suspended.
*
* NB: input_buf contains a plane for each component in image,
* which we index according to the component's SOF position.
*/
METHODDEF(boolean)
compress_data (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
JDIMENSION MCU_col_num; /* index of current MCU within row */
JDIMENSION last_MCU_col = cinfo->MCUs_per_row - 1;
JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;
int blkn, bi, ci, yindex, yoffset, blockcnt;
JDIMENSION ypos, xpos;
jpeg_component_info *compptr;
forward_DCT_ptr forward_DCT;
/* Loop to write as much as one whole iMCU row */
for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row;
yoffset++) {
for (MCU_col_num = coef->mcu_ctr; MCU_col_num <= last_MCU_col;
MCU_col_num++) {
/* Determine where data comes from in input_buf and do the DCT thing.
* Each call on forward_DCT processes a horizontal row of DCT blocks
* as wide as an MCU; we rely on having allocated the MCU_buffer[] blocks
* sequentially. Dummy blocks at the right or bottom edge are filled in
* specially. The data in them does not matter for image reconstruction,
* so we fill them with values that will encode to the smallest amount of
* data, viz: all zeroes in the AC entries, DC entries equal to previous
* block's DC value. (Thanks to Thomas Kinsman for this idea.)
*/
blkn = 0;
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
forward_DCT = cinfo->fdct->forward_DCT[compptr->component_index];
blockcnt = (MCU_col_num < last_MCU_col) ? compptr->MCU_width
: compptr->last_col_width;
xpos = MCU_col_num * compptr->MCU_sample_width;
ypos = yoffset * compptr->DCT_v_scaled_size;
/* ypos == (yoffset+yindex) * DCTSIZE */
for (yindex = 0; yindex < compptr->MCU_height; yindex++) {
if (coef->iMCU_row_num < last_iMCU_row ||
yoffset+yindex < compptr->last_row_height) {
(*forward_DCT) (cinfo, compptr,
input_buf[compptr->component_index],
coef->MCU_buffer[blkn],
ypos, xpos, (JDIMENSION) blockcnt);
if (blockcnt < compptr->MCU_width) {
/* Create some dummy blocks at the right edge of the image. */
FMEMZERO((void FAR *) coef->MCU_buffer[blkn + blockcnt],
(compptr->MCU_width - blockcnt) * SIZEOF(JBLOCK));
for (bi = blockcnt; bi < compptr->MCU_width; bi++) {
coef->MCU_buffer[blkn+bi][0][0] = coef->MCU_buffer[blkn+bi-1][0][0];
}
}
} else {
/* Create a row of dummy blocks at the bottom of the image. */
FMEMZERO((void FAR *) coef->MCU_buffer[blkn],
compptr->MCU_width * SIZEOF(JBLOCK));
for (bi = 0; bi < compptr->MCU_width; bi++) {
coef->MCU_buffer[blkn+bi][0][0] = coef->MCU_buffer[blkn-1][0][0];
}
}
blkn += compptr->MCU_width;
ypos += compptr->DCT_v_scaled_size;
}
}
/* Try to write the MCU. In event of a suspension failure, we will
* re-DCT the MCU on restart (a bit inefficient, could be fixed...)
*/
if (! (*cinfo->entropy->encode_mcu) (cinfo, coef->MCU_buffer)) {
/* Suspension forced; update state counters and exit */
coef->MCU_vert_offset = yoffset;
coef->mcu_ctr = MCU_col_num;
return FALSE;
}
}
/* Completed an MCU row, but perhaps not an iMCU row */
coef->mcu_ctr = 0;
}
/* Completed the iMCU row, advance counters for next one */
coef->iMCU_row_num++;
start_iMCU_row(cinfo);
return TRUE;
}
#ifdef FULL_COEF_BUFFER_SUPPORTED
/*
* Process some data in the first pass of a multi-pass case.
* We process the equivalent of one fully interleaved MCU row ("iMCU" row)
* per call, ie, v_samp_factor block rows for each component in the image.
* This amount of data is read from the source buffer, DCT'd and quantized,
* and saved into the virtual arrays. We also generate suitable dummy blocks
* as needed at the right and lower edges. (The dummy blocks are constructed
* in the virtual arrays, which have been padded appropriately.) This makes
* it possible for subsequent passes not to worry about real vs. dummy blocks.
*
* We must also emit the data to the entropy encoder. This is conveniently
* done by calling compress_output() after we've loaded the current strip
* of the virtual arrays.
*
* NB: input_buf contains a plane for each component in image. All
* components are DCT'd and loaded into the virtual arrays in this pass.
* However, it may be that only a subset of the components are emitted to
* the entropy encoder during this first pass; be careful about looking
* at the scan-dependent variables (MCU dimensions, etc).
*/
METHODDEF(boolean)
compress_first_pass (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;
JDIMENSION blocks_across, MCUs_across, MCUindex;
int bi, ci, h_samp_factor, block_row, block_rows, ndummy;
JCOEF lastDC;
jpeg_component_info *compptr;
JBLOCKARRAY buffer;
JBLOCKROW thisblockrow, lastblockrow;
forward_DCT_ptr forward_DCT;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
/* Align the virtual buffer for this component. */
buffer = (*cinfo->mem->access_virt_barray)
((j_common_ptr) cinfo, coef->whole_image[ci],
coef->iMCU_row_num * compptr->v_samp_factor,
(JDIMENSION) compptr->v_samp_factor, TRUE);
/* Count non-dummy DCT block rows in this iMCU row. */
if (coef->iMCU_row_num < last_iMCU_row)
block_rows = compptr->v_samp_factor;
else {
/* NB: can't use last_row_height here, since may not be set! */
block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
if (block_rows == 0) block_rows = compptr->v_samp_factor;
}
blocks_across = compptr->width_in_blocks;
h_samp_factor = compptr->h_samp_factor;
/* Count number of dummy blocks to be added at the right margin. */
ndummy = (int) (blocks_across % h_samp_factor);
if (ndummy > 0)
ndummy = h_samp_factor - ndummy;
forward_DCT = cinfo->fdct->forward_DCT[ci];
/* Perform DCT for all non-dummy blocks in this iMCU row. Each call
* on forward_DCT processes a complete horizontal row of DCT blocks.
*/
for (block_row = 0; block_row < block_rows; block_row++) {
thisblockrow = buffer[block_row];
(*forward_DCT) (cinfo, compptr, input_buf[ci], thisblockrow,
(JDIMENSION) (block_row * compptr->DCT_v_scaled_size),
(JDIMENSION) 0, blocks_across);
if (ndummy > 0) {
/* Create dummy blocks at the right edge of the image. */
thisblockrow += blocks_across; /* => first dummy block */
FMEMZERO((void FAR *) thisblockrow, ndummy * SIZEOF(JBLOCK));
lastDC = thisblockrow[-1][0];
for (bi = 0; bi < ndummy; bi++) {
thisblockrow[bi][0] = lastDC;
}
}
}
/* If at end of image, create dummy block rows as needed.
* The tricky part here is that within each MCU, we want the DC values
* of the dummy blocks to match the last real block's DC value.
* This squeezes a few more bytes out of the resulting file...
*/
if (coef->iMCU_row_num == last_iMCU_row) {
blocks_across += ndummy; /* include lower right corner */
MCUs_across = blocks_across / h_samp_factor;
for (block_row = block_rows; block_row < compptr->v_samp_factor;
block_row++) {
thisblockrow = buffer[block_row];
lastblockrow = buffer[block_row-1];
FMEMZERO((void FAR *) thisblockrow,
(size_t) (blocks_across * SIZEOF(JBLOCK)));
for (MCUindex = 0; MCUindex < MCUs_across; MCUindex++) {
lastDC = lastblockrow[h_samp_factor-1][0];
for (bi = 0; bi < h_samp_factor; bi++) {
thisblockrow[bi][0] = lastDC;
}
thisblockrow += h_samp_factor; /* advance to next MCU in row */
lastblockrow += h_samp_factor;
}
}
}
}
/* NB: compress_output will increment iMCU_row_num if successful.
* A suspension return will result in redoing all the work above next time.
*/
/* Emit data to the entropy encoder, sharing code with subsequent passes */
return compress_output(cinfo, input_buf);
}
/*
* Process some data in subsequent passes of a multi-pass case.
* We process the equivalent of one fully interleaved MCU row ("iMCU" row)
* per call, ie, v_samp_factor block rows for each component in the scan.
* The data is obtained from the virtual arrays and fed to the entropy coder.
* Returns TRUE if the iMCU row is completed, FALSE if suspended.
*
* NB: input_buf is ignored; it is likely to be a NULL pointer.
*/
METHODDEF(boolean)
compress_output (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
JDIMENSION MCU_col_num; /* index of current MCU within row */
int blkn, ci, xindex, yindex, yoffset;
JDIMENSION start_col;
JBLOCKARRAY buffer[MAX_COMPS_IN_SCAN];
JBLOCKROW buffer_ptr;
jpeg_component_info *compptr;
/* Align the virtual buffers for the components used in this scan.
* NB: during first pass, this is safe only because the buffers will
* already be aligned properly, so jmemmgr.c won't need to do any I/O.
*/
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
buffer[ci] = (*cinfo->mem->access_virt_barray)
((j_common_ptr) cinfo, coef->whole_image[compptr->component_index],
coef->iMCU_row_num * compptr->v_samp_factor,
(JDIMENSION) compptr->v_samp_factor, FALSE);
}
/* Loop to process one whole iMCU row */
for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row;
yoffset++) {
for (MCU_col_num = coef->mcu_ctr; MCU_col_num < cinfo->MCUs_per_row;
MCU_col_num++) {
/* Construct list of pointers to DCT blocks belonging to this MCU */
blkn = 0; /* index of current DCT block within MCU */
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
start_col = MCU_col_num * compptr->MCU_width;
for (yindex = 0; yindex < compptr->MCU_height; yindex++) {
buffer_ptr = buffer[ci][yindex+yoffset] + start_col;
for (xindex = 0; xindex < compptr->MCU_width; xindex++) {
coef->MCU_buffer[blkn++] = buffer_ptr++;
}
}
}
/* Try to write the MCU. */
if (! (*cinfo->entropy->encode_mcu) (cinfo, coef->MCU_buffer)) {
/* Suspension forced; update state counters and exit */
coef->MCU_vert_offset = yoffset;
coef->mcu_ctr = MCU_col_num;
return FALSE;
}
}
/* Completed an MCU row, but perhaps not an iMCU row */
coef->mcu_ctr = 0;
}
/* Completed the iMCU row, advance counters for next one */
coef->iMCU_row_num++;
start_iMCU_row(cinfo);
return TRUE;
}
#endif /* FULL_COEF_BUFFER_SUPPORTED */
/*
* Initialize coefficient buffer controller.
*/
GLOBAL(void)
jinit_c_coef_controller (j_compress_ptr cinfo, boolean need_full_buffer)
{
my_coef_ptr coef;
coef = (my_coef_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_coef_controller));
cinfo->coef = (struct jpeg_c_coef_controller *) coef;
coef->pub.start_pass = start_pass_coef;
/* Create the coefficient buffer. */
if (need_full_buffer) {
#ifdef FULL_COEF_BUFFER_SUPPORTED
/* Allocate a full-image virtual array for each component, */
/* padded to a multiple of samp_factor DCT blocks in each direction. */
int ci;
jpeg_component_info *compptr;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
coef->whole_image[ci] = (*cinfo->mem->request_virt_barray)
((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
(JDIMENSION) jround_up((long) compptr->width_in_blocks,
(long) compptr->h_samp_factor),
(JDIMENSION) jround_up((long) compptr->height_in_blocks,
(long) compptr->v_samp_factor),
(JDIMENSION) compptr->v_samp_factor);
}
#else
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
#endif
} else {
/* We only need a single-MCU buffer. */
JBLOCKROW buffer;
int i;
buffer = (JBLOCKROW)
(*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE,
C_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK));
for (i = 0; i < C_MAX_BLOCKS_IN_MCU; i++) {
coef->MCU_buffer[i] = buffer + i;
}
coef->whole_image[0] = NULL; /* flag for no virtual arrays */
}
}
libs/jpeg-9/jccolor.c
-541
View File
@@ -1,541 +0,0 @@
/*
* jccolor.c
*
* Copyright (C) 1991-1996, Thomas G. Lane.
* Modified 2011-2012 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains input colorspace conversion routines.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* Private subobject */
typedef struct {
struct jpeg_color_converter pub; /* public fields */
/* Private state for RGB->YCC conversion */
INT32 * rgb_ycc_tab; /* => table for RGB to YCbCr conversion */
} my_color_converter;
typedef my_color_converter * my_cconvert_ptr;
/**************** RGB -> YCbCr conversion: most common case **************/
/*
* YCbCr is defined per CCIR 601-1, except that Cb and Cr are
* normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5.
* The conversion equations to be implemented are therefore
* Y = 0.29900 * R + 0.58700 * G + 0.11400 * B
* Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE
* Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE
* (These numbers are derived from TIFF 6.0 section 21, dated 3-June-92.)
* Note: older versions of the IJG code used a zero offset of MAXJSAMPLE/2,
* rather than CENTERJSAMPLE, for Cb and Cr. This gave equal positive and
* negative swings for Cb/Cr, but meant that grayscale values (Cb=Cr=0)
* were not represented exactly. Now we sacrifice exact representation of
* maximum red and maximum blue in order to get exact grayscales.
*
* To avoid floating-point arithmetic, we represent the fractional constants
* as integers scaled up by 2^16 (about 4 digits precision); we have to divide
* the products by 2^16, with appropriate rounding, to get the correct answer.
*
* For even more speed, we avoid doing any multiplications in the inner loop
* by precalculating the constants times R,G,B for all possible values.
* For 8-bit JSAMPLEs this is very reasonable (only 256 entries per table);
* for 12-bit samples it is still acceptable. It's not very reasonable for
* 16-bit samples, but if you want lossless storage you shouldn't be changing
* colorspace anyway.
* The CENTERJSAMPLE offsets and the rounding fudge-factor of 0.5 are included
* in the tables to save adding them separately in the inner loop.
*/
#define SCALEBITS 16 /* speediest right-shift on some machines */
#define CBCR_OFFSET ((INT32) CENTERJSAMPLE << SCALEBITS)
#define ONE_HALF ((INT32) 1 << (SCALEBITS-1))
#define FIX(x) ((INT32) ((x) * (1L<<SCALEBITS) + 0.5))
/* We allocate one big table and divide it up into eight parts, instead of
* doing eight alloc_small requests. This lets us use a single table base
* address, which can be held in a register in the inner loops on many
* machines (more than can hold all eight addresses, anyway).
*/
#define R_Y_OFF 0 /* offset to R => Y section */
#define G_Y_OFF (1*(MAXJSAMPLE+1)) /* offset to G => Y section */
#define B_Y_OFF (2*(MAXJSAMPLE+1)) /* etc. */
#define R_CB_OFF (3*(MAXJSAMPLE+1))
#define G_CB_OFF (4*(MAXJSAMPLE+1))
#define B_CB_OFF (5*(MAXJSAMPLE+1))
#define R_CR_OFF B_CB_OFF /* B=>Cb, R=>Cr are the same */
#define G_CR_OFF (6*(MAXJSAMPLE+1))
#define B_CR_OFF (7*(MAXJSAMPLE+1))
#define TABLE_SIZE (8*(MAXJSAMPLE+1))
/*
* Initialize for RGB->YCC colorspace conversion.
*/
METHODDEF(void)
rgb_ycc_start (j_compress_ptr cinfo)
{
my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
INT32 * rgb_ycc_tab;
INT32 i;
/* Allocate and fill in the conversion tables. */
cconvert->rgb_ycc_tab = rgb_ycc_tab = (INT32 *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
(TABLE_SIZE * SIZEOF(INT32)));
for (i = 0; i <= MAXJSAMPLE; i++) {
rgb_ycc_tab[i+R_Y_OFF] = FIX(0.29900) * i;
rgb_ycc_tab[i+G_Y_OFF] = FIX(0.58700) * i;
rgb_ycc_tab[i+B_Y_OFF] = FIX(0.11400) * i + ONE_HALF;
rgb_ycc_tab[i+R_CB_OFF] = (-FIX(0.16874)) * i;
rgb_ycc_tab[i+G_CB_OFF] = (-FIX(0.33126)) * i;
/* We use a rounding fudge-factor of 0.5-epsilon for Cb and Cr.
* This ensures that the maximum output will round to MAXJSAMPLE
* not MAXJSAMPLE+1, and thus that we don't have to range-limit.
*/
rgb_ycc_tab[i+B_CB_OFF] = FIX(0.50000) * i + CBCR_OFFSET + ONE_HALF-1;
/* B=>Cb and R=>Cr tables are the same
rgb_ycc_tab[i+R_CR_OFF] = FIX(0.50000) * i + CBCR_OFFSET + ONE_HALF-1;
*/
rgb_ycc_tab[i+G_CR_OFF] = (-FIX(0.41869)) * i;
rgb_ycc_tab[i+B_CR_OFF] = (-FIX(0.08131)) * i;
}
}
/*
* Convert some rows of samples to the JPEG colorspace.
*
* Note that we change from the application's interleaved-pixel format
* to our internal noninterleaved, one-plane-per-component format.
* The input buffer is therefore three times as wide as the output buffer.
*
* A starting row offset is provided only for the output buffer. The caller
* can easily adjust the passed input_buf value to accommodate any row
* offset required on that side.
*/
METHODDEF(void)
rgb_ycc_convert (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
JDIMENSION output_row, int num_rows)
{
my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
register INT32 * ctab = cconvert->rgb_ycc_tab;
register int r, g, b;
register JSAMPROW inptr;
register JSAMPROW outptr0, outptr1, outptr2;
register JDIMENSION col;
JDIMENSION num_cols = cinfo->image_width;
while (--num_rows >= 0) {
inptr = *input_buf++;
outptr0 = output_buf[0][output_row];
outptr1 = output_buf[1][output_row];
outptr2 = output_buf[2][output_row];
output_row++;
for (col = 0; col < num_cols; col++) {
r = GETJSAMPLE(inptr[RGB_RED]);
g = GETJSAMPLE(inptr[RGB_GREEN]);
b = GETJSAMPLE(inptr[RGB_BLUE]);
/* If the inputs are 0..MAXJSAMPLE, the outputs of these equations
* must be too; we do not need an explicit range-limiting operation.
* Hence the value being shifted is never negative, and we don't
* need the general RIGHT_SHIFT macro.
*/
/* Y */
outptr0[col] = (JSAMPLE)
((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF])
>> SCALEBITS);
/* Cb */
outptr1[col] = (JSAMPLE)
((ctab[r+R_CB_OFF] + ctab[g+G_CB_OFF] + ctab[b+B_CB_OFF])
>> SCALEBITS);
/* Cr */
outptr2[col] = (JSAMPLE)
((ctab[r+R_CR_OFF] + ctab[g+G_CR_OFF] + ctab[b+B_CR_OFF])
>> SCALEBITS);
inptr += RGB_PIXELSIZE;
}
}
}
/**************** Cases other than RGB -> YCbCr **************/
/*
* Convert some rows of samples to the JPEG colorspace.
* This version handles RGB->grayscale conversion, which is the same
* as the RGB->Y portion of RGB->YCbCr.
* We assume rgb_ycc_start has been called (we only use the Y tables).
*/
METHODDEF(void)
rgb_gray_convert (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
JDIMENSION output_row, int num_rows)
{
my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
register INT32 * ctab = cconvert->rgb_ycc_tab;
register int r, g, b;
register JSAMPROW inptr;
register JSAMPROW outptr;
register JDIMENSION col;
JDIMENSION num_cols = cinfo->image_width;
while (--num_rows >= 0) {
inptr = *input_buf++;
outptr = output_buf[0][output_row++];
for (col = 0; col < num_cols; col++) {
r = GETJSAMPLE(inptr[RGB_RED]);
g = GETJSAMPLE(inptr[RGB_GREEN]);
b = GETJSAMPLE(inptr[RGB_BLUE]);
/* Y */
outptr[col] = (JSAMPLE)
((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF])
>> SCALEBITS);
inptr += RGB_PIXELSIZE;
}
}
}
/*
* Convert some rows of samples to the JPEG colorspace.
* This version handles Adobe-style CMYK->YCCK conversion,
* where we convert R=1-C, G=1-M, and B=1-Y to YCbCr using the same
* conversion as above, while passing K (black) unchanged.
* We assume rgb_ycc_start has been called.
*/
METHODDEF(void)
cmyk_ycck_convert (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
JDIMENSION output_row, int num_rows)
{
my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
register INT32 * ctab = cconvert->rgb_ycc_tab;
register int r, g, b;
register JSAMPROW inptr;
register JSAMPROW outptr0, outptr1, outptr2, outptr3;
register JDIMENSION col;
JDIMENSION num_cols = cinfo->image_width;
while (--num_rows >= 0) {
inptr = *input_buf++;
outptr0 = output_buf[0][output_row];
outptr1 = output_buf[1][output_row];
outptr2 = output_buf[2][output_row];
outptr3 = output_buf[3][output_row];
output_row++;
for (col = 0; col < num_cols; col++) {
r = MAXJSAMPLE - GETJSAMPLE(inptr[0]);
g = MAXJSAMPLE - GETJSAMPLE(inptr[1]);
b = MAXJSAMPLE - GETJSAMPLE(inptr[2]);
/* K passes through as-is */
outptr3[col] = inptr[3]; /* don't need GETJSAMPLE here */
/* If the inputs are 0..MAXJSAMPLE, the outputs of these equations
* must be too; we do not need an explicit range-limiting operation.
* Hence the value being shifted is never negative, and we don't
* need the general RIGHT_SHIFT macro.
*/
/* Y */
outptr0[col] = (JSAMPLE)
((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF])
>> SCALEBITS);
/* Cb */
outptr1[col] = (JSAMPLE)
((ctab[r+R_CB_OFF] + ctab[g+G_CB_OFF] + ctab[b+B_CB_OFF])
>> SCALEBITS);
/* Cr */
outptr2[col] = (JSAMPLE)
((ctab[r+R_CR_OFF] + ctab[g+G_CR_OFF] + ctab[b+B_CR_OFF])
>> SCALEBITS);
inptr += 4;
}
}
}
/*
* Convert some rows of samples to the JPEG colorspace.
* [R,G,B] to [R-G,G,B-G] conversion with modulo calculation
* (forward reversible color transform).
*/
METHODDEF(void)
rgb_rgb1_convert (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
JDIMENSION output_row, int num_rows)
{
register int r, g, b;
register JSAMPROW inptr;
register JSAMPROW outptr0, outptr1, outptr2;
register JDIMENSION col;
JDIMENSION num_cols = cinfo->image_width;
while (--num_rows >= 0) {
inptr = *input_buf++;
outptr0 = output_buf[0][output_row];
outptr1 = output_buf[1][output_row];
outptr2 = output_buf[2][output_row];
output_row++;
for (col = 0; col < num_cols; col++) {
r = GETJSAMPLE(inptr[RGB_RED]);
g = GETJSAMPLE(inptr[RGB_GREEN]);
b = GETJSAMPLE(inptr[RGB_BLUE]);
/* Assume that MAXJSAMPLE+1 is a power of 2, so that the MOD
* (modulo) operator is equivalent to the bitmask operator AND.
*/
outptr0[col] = (JSAMPLE) ((r - g + CENTERJSAMPLE) & MAXJSAMPLE);
outptr1[col] = (JSAMPLE) g;
outptr2[col] = (JSAMPLE) ((b - g + CENTERJSAMPLE) & MAXJSAMPLE);
inptr += RGB_PIXELSIZE;
}
}
}
/*
* Convert some rows of samples to the JPEG colorspace.
* This version handles grayscale output with no conversion.
* The source can be either plain grayscale or YCbCr (since Y == gray).
*/
METHODDEF(void)
grayscale_convert (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
JDIMENSION output_row, int num_rows)
{
int instride = cinfo->input_components;
register JSAMPROW inptr;
register JSAMPROW outptr;
register JDIMENSION col;
JDIMENSION num_cols = cinfo->image_width;
while (--num_rows >= 0) {
inptr = *input_buf++;
outptr = output_buf[0][output_row++];
for (col = 0; col < num_cols; col++) {
outptr[col] = inptr[0]; /* don't need GETJSAMPLE() here */
inptr += instride;
}
}
}
/*
* Convert some rows of samples to the JPEG colorspace.
* No colorspace conversion, but change from interleaved
* to separate-planes representation.
*/
METHODDEF(void)
rgb_convert (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
JDIMENSION output_row, int num_rows)
{
register JSAMPROW inptr;
register JSAMPROW outptr0, outptr1, outptr2;
register JDIMENSION col;
JDIMENSION num_cols = cinfo->image_width;
while (--num_rows >= 0) {
inptr = *input_buf++;
outptr0 = output_buf[0][output_row];
outptr1 = output_buf[1][output_row];
outptr2 = output_buf[2][output_row];
output_row++;
for (col = 0; col < num_cols; col++) {
/* We can dispense with GETJSAMPLE() here */
outptr0[col] = inptr[RGB_RED];
outptr1[col] = inptr[RGB_GREEN];
outptr2[col] = inptr[RGB_BLUE];
inptr += RGB_PIXELSIZE;
}
}
}
/*
* Convert some rows of samples to the JPEG colorspace.
* This version handles multi-component colorspaces without conversion.
* We assume input_components == num_components.
*/
METHODDEF(void)
null_convert (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
JDIMENSION output_row, int num_rows)
{
int ci;
register int nc = cinfo->num_components;
register JSAMPROW inptr;
register JSAMPROW outptr;
register JDIMENSION col;
JDIMENSION num_cols = cinfo->image_width;
while (--num_rows >= 0) {
/* It seems fastest to make a separate pass for each component. */
for (ci = 0; ci < nc; ci++) {
inptr = input_buf[0] + ci;
outptr = output_buf[ci][output_row];
for (col = 0; col < num_cols; col++) {
*outptr++ = *inptr; /* don't need GETJSAMPLE() here */
inptr += nc;
}
}
input_buf++;
output_row++;
}
}
/*
* Empty method for start_pass.
*/
METHODDEF(void)
null_method (j_compress_ptr cinfo)
{
/* no work needed */
}
/*
* Module initialization routine for input colorspace conversion.
*/
GLOBAL(void)
jinit_color_converter (j_compress_ptr cinfo)
{
my_cconvert_ptr cconvert;
cconvert = (my_cconvert_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_color_converter));
cinfo->cconvert = &cconvert->pub;
/* set start_pass to null method until we find out differently */
cconvert->pub.start_pass = null_method;
/* Make sure input_components agrees with in_color_space */
switch (cinfo->in_color_space) {
case JCS_GRAYSCALE:
if (cinfo->input_components != 1)
ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE);
break;
case JCS_RGB:
if (cinfo->input_components != RGB_PIXELSIZE)
ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE);
break;
case JCS_YCbCr:
if (cinfo->input_components != 3)
ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE);
break;
case JCS_CMYK:
case JCS_YCCK:
if (cinfo->input_components != 4)
ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE);
break;
default: /* JCS_UNKNOWN can be anything */
if (cinfo->input_components < 1)
ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE);
break;
}
/* Support color transform only for RGB colorspace */
if (cinfo->color_transform && cinfo->jpeg_color_space != JCS_RGB)
ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
/* Check num_components, set conversion method based on requested space */
switch (cinfo->jpeg_color_space) {
case JCS_GRAYSCALE:
if (cinfo->num_components != 1)
ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
if (cinfo->in_color_space == JCS_GRAYSCALE ||
cinfo->in_color_space == JCS_YCbCr)
cconvert->pub.color_convert = grayscale_convert;
else if (cinfo->in_color_space == JCS_RGB) {
cconvert->pub.start_pass = rgb_ycc_start;
cconvert->pub.color_convert = rgb_gray_convert;
} else
ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
break;
case JCS_RGB:
if (cinfo->num_components != 3)
ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
if (cinfo->in_color_space == JCS_RGB) {
switch (cinfo->color_transform) {
case JCT_NONE:
cconvert->pub.color_convert = rgb_convert;
break;
case JCT_SUBTRACT_GREEN:
cconvert->pub.color_convert = rgb_rgb1_convert;
break;
default:
ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
break;
}
} else
ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
break;
case JCS_YCbCr:
if (cinfo->num_components != 3)
ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
if (cinfo->in_color_space == JCS_RGB) {
cconvert->pub.start_pass = rgb_ycc_start;
cconvert->pub.color_convert = rgb_ycc_convert;
} else if (cinfo->in_color_space == JCS_YCbCr)
cconvert->pub.color_convert = null_convert;
else
ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
break;
case JCS_CMYK:
if (cinfo->num_components != 4)
ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
if (cinfo->in_color_space == JCS_CMYK)
cconvert->pub.color_convert = null_convert;
else
ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
break;
case JCS_YCCK:
if (cinfo->num_components != 4)
ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
if (cinfo->in_color_space == JCS_CMYK) {
cconvert->pub.start_pass = rgb_ycc_start;
cconvert->pub.color_convert = cmyk_ycck_convert;
} else if (cinfo->in_color_space == JCS_YCCK)
cconvert->pub.color_convert = null_convert;
else
ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
break;
default: /* allow null conversion of JCS_UNKNOWN */
if (cinfo->jpeg_color_space != cinfo->in_color_space ||
cinfo->num_components != cinfo->input_components)
ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
cconvert->pub.color_convert = null_convert;
break;
}
}
libs/jpeg-9/jcdctmgr.c
-482
View File
@@ -1,482 +0,0 @@
/*
* jcdctmgr.c
*
* Copyright (C) 1994-1996, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains the forward-DCT management logic.
* This code selects a particular DCT implementation to be used,
* and it performs related housekeeping chores including coefficient
* quantization.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
#include "jdct.h" /* Private declarations for DCT subsystem */
/* Private subobject for this module */
typedef struct {
struct jpeg_forward_dct pub; /* public fields */
/* Pointer to the DCT routine actually in use */
forward_DCT_method_ptr do_dct[MAX_COMPONENTS];
/* The actual post-DCT divisors --- not identical to the quant table
* entries, because of scaling (especially for an unnormalized DCT).
* Each table is given in normal array order.
*/
DCTELEM * divisors[NUM_QUANT_TBLS];
#ifdef DCT_FLOAT_SUPPORTED
/* Same as above for the floating-point case. */
float_DCT_method_ptr do_float_dct[MAX_COMPONENTS];
FAST_FLOAT * float_divisors[NUM_QUANT_TBLS];
#endif
} my_fdct_controller;
typedef my_fdct_controller * my_fdct_ptr;
/* The current scaled-DCT routines require ISLOW-style divisor tables,
* so be sure to compile that code if either ISLOW or SCALING is requested.
*/
#ifdef DCT_ISLOW_SUPPORTED
#define PROVIDE_ISLOW_TABLES
#else
#ifdef DCT_SCALING_SUPPORTED
#define PROVIDE_ISLOW_TABLES
#endif
#endif
/*
* Perform forward DCT on one or more blocks of a component.
*
* The input samples are taken from the sample_data[] array starting at
* position start_row/start_col, and moving to the right for any additional
* blocks. The quantized coefficients are returned in coef_blocks[].
*/
METHODDEF(void)
forward_DCT (j_compress_ptr cinfo, jpeg_component_info * compptr,
JSAMPARRAY sample_data, JBLOCKROW coef_blocks,
JDIMENSION start_row, JDIMENSION start_col,
JDIMENSION num_blocks)
/* This version is used for integer DCT implementations. */
{
/* This routine is heavily used, so it's worth coding it tightly. */
my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct;
forward_DCT_method_ptr do_dct = fdct->do_dct[compptr->component_index];
DCTELEM * divisors = fdct->divisors[compptr->quant_tbl_no];
DCTELEM workspace[DCTSIZE2]; /* work area for FDCT subroutine */
JDIMENSION bi;
sample_data += start_row; /* fold in the vertical offset once */
for (bi = 0; bi < num_blocks; bi++, start_col += compptr->DCT_h_scaled_size) {
/* Perform the DCT */
(*do_dct) (workspace, sample_data, start_col);
/* Quantize/descale the coefficients, and store into coef_blocks[] */
{ register DCTELEM temp, qval;
register int i;
register JCOEFPTR output_ptr = coef_blocks[bi];
for (i = 0; i < DCTSIZE2; i++) {
qval = divisors[i];
temp = workspace[i];
/* Divide the coefficient value by qval, ensuring proper rounding.
* Since C does not specify the direction of rounding for negative
* quotients, we have to force the dividend positive for portability.
*
* In most files, at least half of the output values will be zero
* (at default quantization settings, more like three-quarters...)
* so we should ensure that this case is fast. On many machines,
* a comparison is enough cheaper than a divide to make a special test
* a win. Since both inputs will be nonnegative, we need only test
* for a < b to discover whether a/b is 0.
* If your machine's division is fast enough, define FAST_DIVIDE.
*/
#ifdef FAST_DIVIDE
#define DIVIDE_BY(a,b) a /= b
#else
#define DIVIDE_BY(a,b) if (a >= b) a /= b; else a = 0
#endif
if (temp < 0) {
temp = -temp;
temp += qval>>1; /* for rounding */
DIVIDE_BY(temp, qval);
temp = -temp;
} else {
temp += qval>>1; /* for rounding */
DIVIDE_BY(temp, qval);
}
output_ptr[i] = (JCOEF) temp;
}
}
}
}
#ifdef DCT_FLOAT_SUPPORTED
METHODDEF(void)
forward_DCT_float (j_compress_ptr cinfo, jpeg_component_info * compptr,
JSAMPARRAY sample_data, JBLOCKROW coef_blocks,
JDIMENSION start_row, JDIMENSION start_col,
JDIMENSION num_blocks)
/* This version is used for floating-point DCT implementations. */
{
/* This routine is heavily used, so it's worth coding it tightly. */
my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct;
float_DCT_method_ptr do_dct = fdct->do_float_dct[compptr->component_index];
FAST_FLOAT * divisors = fdct->float_divisors[compptr->quant_tbl_no];
FAST_FLOAT workspace[DCTSIZE2]; /* work area for FDCT subroutine */
JDIMENSION bi;
sample_data += start_row; /* fold in the vertical offset once */
for (bi = 0; bi < num_blocks; bi++, start_col += compptr->DCT_h_scaled_size) {
/* Perform the DCT */
(*do_dct) (workspace, sample_data, start_col);
/* Quantize/descale the coefficients, and store into coef_blocks[] */
{ register FAST_FLOAT temp;
register int i;
register JCOEFPTR output_ptr = coef_blocks[bi];
for (i = 0; i < DCTSIZE2; i++) {
/* Apply the quantization and scaling factor */
temp = workspace[i] * divisors[i];
/* Round to nearest integer.
* Since C does not specify the direction of rounding for negative
* quotients, we have to force the dividend positive for portability.
* The maximum coefficient size is +-16K (for 12-bit data), so this
* code should work for either 16-bit or 32-bit ints.
*/
output_ptr[i] = (JCOEF) ((int) (temp + (FAST_FLOAT) 16384.5) - 16384);
}
}
}
}
#endif /* DCT_FLOAT_SUPPORTED */
/*
* Initialize for a processing pass.
* Verify that all referenced Q-tables are present, and set up
* the divisor table for each one.
* In the current implementation, DCT of all components is done during
* the first pass, even if only some components will be output in the
* first scan. Hence all components should be examined here.
*/
METHODDEF(void)
start_pass_fdctmgr (j_compress_ptr cinfo)
{
my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct;
int ci, qtblno, i;
jpeg_component_info *compptr;
int method = 0;
JQUANT_TBL * qtbl;
DCTELEM * dtbl;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
/* Select the proper DCT routine for this component's scaling */
switch ((compptr->DCT_h_scaled_size << 8) + compptr->DCT_v_scaled_size) {
#ifdef DCT_SCALING_SUPPORTED
case ((1 << 8) + 1):
fdct->do_dct[ci] = jpeg_fdct_1x1;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((2 << 8) + 2):
fdct->do_dct[ci] = jpeg_fdct_2x2;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((3 << 8) + 3):
fdct->do_dct[ci] = jpeg_fdct_3x3;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((4 << 8) + 4):
fdct->do_dct[ci] = jpeg_fdct_4x4;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((5 << 8) + 5):
fdct->do_dct[ci] = jpeg_fdct_5x5;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((6 << 8) + 6):
fdct->do_dct[ci] = jpeg_fdct_6x6;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((7 << 8) + 7):
fdct->do_dct[ci] = jpeg_fdct_7x7;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((9 << 8) + 9):
fdct->do_dct[ci] = jpeg_fdct_9x9;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((10 << 8) + 10):
fdct->do_dct[ci] = jpeg_fdct_10x10;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((11 << 8) + 11):
fdct->do_dct[ci] = jpeg_fdct_11x11;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((12 << 8) + 12):
fdct->do_dct[ci] = jpeg_fdct_12x12;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((13 << 8) + 13):
fdct->do_dct[ci] = jpeg_fdct_13x13;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((14 << 8) + 14):
fdct->do_dct[ci] = jpeg_fdct_14x14;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((15 << 8) + 15):
fdct->do_dct[ci] = jpeg_fdct_15x15;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((16 << 8) + 16):
fdct->do_dct[ci] = jpeg_fdct_16x16;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((16 << 8) + 8):
fdct->do_dct[ci] = jpeg_fdct_16x8;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((14 << 8) + 7):
fdct->do_dct[ci] = jpeg_fdct_14x7;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((12 << 8) + 6):
fdct->do_dct[ci] = jpeg_fdct_12x6;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((10 << 8) + 5):
fdct->do_dct[ci] = jpeg_fdct_10x5;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((8 << 8) + 4):
fdct->do_dct[ci] = jpeg_fdct_8x4;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((6 << 8) + 3):
fdct->do_dct[ci] = jpeg_fdct_6x3;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((4 << 8) + 2):
fdct->do_dct[ci] = jpeg_fdct_4x2;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((2 << 8) + 1):
fdct->do_dct[ci] = jpeg_fdct_2x1;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((8 << 8) + 16):
fdct->do_dct[ci] = jpeg_fdct_8x16;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((7 << 8) + 14):
fdct->do_dct[ci] = jpeg_fdct_7x14;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((6 << 8) + 12):
fdct->do_dct[ci] = jpeg_fdct_6x12;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((5 << 8) + 10):
fdct->do_dct[ci] = jpeg_fdct_5x10;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((4 << 8) + 8):
fdct->do_dct[ci] = jpeg_fdct_4x8;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((3 << 8) + 6):
fdct->do_dct[ci] = jpeg_fdct_3x6;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((2 << 8) + 4):
fdct->do_dct[ci] = jpeg_fdct_2x4;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
case ((1 << 8) + 2):
fdct->do_dct[ci] = jpeg_fdct_1x2;
method = JDCT_ISLOW; /* jfdctint uses islow-style table */
break;
#endif
case ((DCTSIZE << 8) + DCTSIZE):
switch (cinfo->dct_method) {
#ifdef DCT_ISLOW_SUPPORTED
case JDCT_ISLOW:
fdct->do_dct[ci] = jpeg_fdct_islow;
method = JDCT_ISLOW;
break;
#endif
#ifdef DCT_IFAST_SUPPORTED
case JDCT_IFAST:
fdct->do_dct[ci] = jpeg_fdct_ifast;
method = JDCT_IFAST;
break;
#endif
#ifdef DCT_FLOAT_SUPPORTED
case JDCT_FLOAT:
fdct->do_float_dct[ci] = jpeg_fdct_float;
method = JDCT_FLOAT;
break;
#endif
default:
ERREXIT(cinfo, JERR_NOT_COMPILED);
break;
}
break;
default:
ERREXIT2(cinfo, JERR_BAD_DCTSIZE,
compptr->DCT_h_scaled_size, compptr->DCT_v_scaled_size);
break;
}
qtblno = compptr->quant_tbl_no;
/* Make sure specified quantization table is present */
if (qtblno < 0 || qtblno >= NUM_QUANT_TBLS ||
cinfo->quant_tbl_ptrs[qtblno] == NULL)
ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno);
qtbl = cinfo->quant_tbl_ptrs[qtblno];
/* Compute divisors for this quant table */
/* We may do this more than once for same table, but it's not a big deal */
switch (method) {
#ifdef PROVIDE_ISLOW_TABLES
case JDCT_ISLOW:
/* For LL&M IDCT method, divisors are equal to raw quantization
* coefficients multiplied by 8 (to counteract scaling).
*/
if (fdct->divisors[qtblno] == NULL) {
fdct->divisors[qtblno] = (DCTELEM *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
DCTSIZE2 * SIZEOF(DCTELEM));
}
dtbl = fdct->divisors[qtblno];
for (i = 0; i < DCTSIZE2; i++) {
dtbl[i] = ((DCTELEM) qtbl->quantval[i]) << 3;
}
fdct->pub.forward_DCT[ci] = forward_DCT;
break;
#endif
#ifdef DCT_IFAST_SUPPORTED
case JDCT_IFAST:
{
/* For AA&N IDCT method, divisors are equal to quantization
* coefficients scaled by scalefactor[row]*scalefactor[col], where
* scalefactor[0] = 1
* scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7
* We apply a further scale factor of 8.
*/
#define CONST_BITS 14
static const INT16 aanscales[DCTSIZE2] = {
/* precomputed values scaled up by 14 bits */
16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270,
21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906,
19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315,
16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520,
12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552,
8867, 12299, 11585, 10426, 8867, 6967, 4799, 2446,
4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247
};
SHIFT_TEMPS
if (fdct->divisors[qtblno] == NULL) {
fdct->divisors[qtblno] = (DCTELEM *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
DCTSIZE2 * SIZEOF(DCTELEM));
}
dtbl = fdct->divisors[qtblno];
for (i = 0; i < DCTSIZE2; i++) {
dtbl[i] = (DCTELEM)
DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[i],
(INT32) aanscales[i]),
CONST_BITS-3);
}
}
fdct->pub.forward_DCT[ci] = forward_DCT;
break;
#endif
#ifdef DCT_FLOAT_SUPPORTED
case JDCT_FLOAT:
{
/* For float AA&N IDCT method, divisors are equal to quantization
* coefficients scaled by scalefactor[row]*scalefactor[col], where
* scalefactor[0] = 1
* scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7
* We apply a further scale factor of 8.
* What's actually stored is 1/divisor so that the inner loop can
* use a multiplication rather than a division.
*/
FAST_FLOAT * fdtbl;
int row, col;
static const double aanscalefactor[DCTSIZE] = {
1.0, 1.387039845, 1.306562965, 1.175875602,
1.0, 0.785694958, 0.541196100, 0.275899379
};
if (fdct->float_divisors[qtblno] == NULL) {
fdct->float_divisors[qtblno] = (FAST_FLOAT *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
DCTSIZE2 * SIZEOF(FAST_FLOAT));
}
fdtbl = fdct->float_divisors[qtblno];
i = 0;
for (row = 0; row < DCTSIZE; row++) {
for (col = 0; col < DCTSIZE; col++) {
fdtbl[i] = (FAST_FLOAT)
(1.0 / (((double) qtbl->quantval[i] *
aanscalefactor[row] * aanscalefactor[col] * 8.0)));
i++;
}
}
}
fdct->pub.forward_DCT[ci] = forward_DCT_float;
break;
#endif
default:
ERREXIT(cinfo, JERR_NOT_COMPILED);
break;
}
}
}
/*
* Initialize FDCT manager.
*/
GLOBAL(void)
jinit_forward_dct (j_compress_ptr cinfo)
{
my_fdct_ptr fdct;
int i;
fdct = (my_fdct_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_fdct_controller));
cinfo->fdct = (struct jpeg_forward_dct *) fdct;
fdct->pub.start_pass = start_pass_fdctmgr;
/* Mark divisor tables unallocated */
for (i = 0; i < NUM_QUANT_TBLS; i++) {
fdct->divisors[i] = NULL;
#ifdef DCT_FLOAT_SUPPORTED
fdct->float_divisors[i] = NULL;
#endif
}
}
libs/jpeg-9/jchuff.c
-1576
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libs/jpeg-9/jcinit.c
-65
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@@ -1,65 +0,0 @@
/*
* jcinit.c
*
* Copyright (C) 1991-1997, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains initialization logic for the JPEG compressor.
* This routine is in charge of selecting the modules to be executed and
* making an initialization call to each one.
*
* Logically, this code belongs in jcmaster.c. It's split out because
* linking this routine implies linking the entire compression library.
* For a transcoding-only application, we want to be able to use jcmaster.c
* without linking in the whole library.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/*
* Master selection of compression modules.
* This is done once at the start of processing an image. We determine
* which modules will be used and give them appropriate initialization calls.
*/
GLOBAL(void)
jinit_compress_master (j_compress_ptr cinfo)
{
/* Initialize master control (includes parameter checking/processing) */
jinit_c_master_control(cinfo, FALSE /* full compression */);
/* Preprocessing */
if (! cinfo->raw_data_in) {
jinit_color_converter(cinfo);
jinit_downsampler(cinfo);
jinit_c_prep_controller(cinfo, FALSE /* never need full buffer here */);
}
/* Forward DCT */
jinit_forward_dct(cinfo);
/* Entropy encoding: either Huffman or arithmetic coding. */
if (cinfo->arith_code)
jinit_arith_encoder(cinfo);
else {
jinit_huff_encoder(cinfo);
}
/* Need a full-image coefficient buffer in any multi-pass mode. */
jinit_c_coef_controller(cinfo,
(boolean) (cinfo->num_scans > 1 || cinfo->optimize_coding));
jinit_c_main_controller(cinfo, FALSE /* never need full buffer here */);
jinit_marker_writer(cinfo);
/* We can now tell the memory manager to allocate virtual arrays. */
(*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);
/* Write the datastream header (SOI) immediately.
* Frame and scan headers are postponed till later.
* This lets application insert special markers after the SOI.
*/
(*cinfo->marker->write_file_header) (cinfo);
}
libs/jpeg-9/jcmainct.c
-297
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@@ -1,297 +0,0 @@
/*
* jcmainct.c
*
* Copyright (C) 1994-1996, Thomas G. Lane.
* Modified 2003-2012 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains the main buffer controller for compression.
* The main buffer lies between the pre-processor and the JPEG
* compressor proper; it holds downsampled data in the JPEG colorspace.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* Note: currently, there is no operating mode in which a full-image buffer
* is needed at this step. If there were, that mode could not be used with
* "raw data" input, since this module is bypassed in that case. However,
* we've left the code here for possible use in special applications.
*/
#undef FULL_MAIN_BUFFER_SUPPORTED
/* Private buffer controller object */
typedef struct {
struct jpeg_c_main_controller pub; /* public fields */
JDIMENSION cur_iMCU_row; /* number of current iMCU row */
JDIMENSION rowgroup_ctr; /* counts row groups received in iMCU row */
boolean suspended; /* remember if we suspended output */
J_BUF_MODE pass_mode; /* current operating mode */
/* If using just a strip buffer, this points to the entire set of buffers
* (we allocate one for each component). In the full-image case, this
* points to the currently accessible strips of the virtual arrays.
*/
JSAMPARRAY buffer[MAX_COMPONENTS];
#ifdef FULL_MAIN_BUFFER_SUPPORTED
/* If using full-image storage, this array holds pointers to virtual-array
* control blocks for each component. Unused if not full-image storage.
*/
jvirt_sarray_ptr whole_image[MAX_COMPONENTS];
#endif
} my_main_controller;
typedef my_main_controller * my_main_ptr;
/* Forward declarations */
METHODDEF(void) process_data_simple_main
JPP((j_compress_ptr cinfo, JSAMPARRAY input_buf,
JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail));
#ifdef FULL_MAIN_BUFFER_SUPPORTED
METHODDEF(void) process_data_buffer_main
JPP((j_compress_ptr cinfo, JSAMPARRAY input_buf,
JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail));
#endif
/*
* Initialize for a processing pass.
*/
METHODDEF(void)
start_pass_main (j_compress_ptr cinfo, J_BUF_MODE pass_mode)
{
my_main_ptr mainp = (my_main_ptr) cinfo->main;
/* Do nothing in raw-data mode. */
if (cinfo->raw_data_in)
return;
mainp->cur_iMCU_row = 0; /* initialize counters */
mainp->rowgroup_ctr = 0;
mainp->suspended = FALSE;
mainp->pass_mode = pass_mode; /* save mode for use by process_data */
switch (pass_mode) {
case JBUF_PASS_THRU:
#ifdef FULL_MAIN_BUFFER_SUPPORTED
if (mainp->whole_image[0] != NULL)
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
#endif
mainp->pub.process_data = process_data_simple_main;
break;
#ifdef FULL_MAIN_BUFFER_SUPPORTED
case JBUF_SAVE_SOURCE:
case JBUF_CRANK_DEST:
case JBUF_SAVE_AND_PASS:
if (mainp->whole_image[0] == NULL)
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
mainp->pub.process_data = process_data_buffer_main;
break;
#endif
default:
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
break;
}
}
/*
* Process some data.
* This routine handles the simple pass-through mode,
* where we have only a strip buffer.
*/
METHODDEF(void)
process_data_simple_main (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,
JDIMENSION in_rows_avail)
{
my_main_ptr mainp = (my_main_ptr) cinfo->main;
while (mainp->cur_iMCU_row < cinfo->total_iMCU_rows) {
/* Read input data if we haven't filled the main buffer yet */
if (mainp->rowgroup_ctr < (JDIMENSION) cinfo->min_DCT_v_scaled_size)
(*cinfo->prep->pre_process_data) (cinfo,
input_buf, in_row_ctr, in_rows_avail,
mainp->buffer, &mainp->rowgroup_ctr,
(JDIMENSION) cinfo->min_DCT_v_scaled_size);
/* If we don't have a full iMCU row buffered, return to application for
* more data. Note that preprocessor will always pad to fill the iMCU row
* at the bottom of the image.
*/
if (mainp->rowgroup_ctr != (JDIMENSION) cinfo->min_DCT_v_scaled_size)
return;
/* Send the completed row to the compressor */
if (! (*cinfo->coef->compress_data) (cinfo, mainp->buffer)) {
/* If compressor did not consume the whole row, then we must need to
* suspend processing and return to the application. In this situation
* we pretend we didn't yet consume the last input row; otherwise, if
* it happened to be the last row of the image, the application would
* think we were done.
*/
if (! mainp->suspended) {
(*in_row_ctr)--;
mainp->suspended = TRUE;
}
return;
}
/* We did finish the row. Undo our little suspension hack if a previous
* call suspended; then mark the main buffer empty.
*/
if (mainp->suspended) {
(*in_row_ctr)++;
mainp->suspended = FALSE;
}
mainp->rowgroup_ctr = 0;
mainp->cur_iMCU_row++;
}
}
#ifdef FULL_MAIN_BUFFER_SUPPORTED
/*
* Process some data.
* This routine handles all of the modes that use a full-size buffer.
*/
METHODDEF(void)
process_data_buffer_main (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,
JDIMENSION in_rows_avail)
{
my_main_ptr mainp = (my_main_ptr) cinfo->main;
int ci;
jpeg_component_info *compptr;
boolean writing = (mainp->pass_mode != JBUF_CRANK_DEST);
while (mainp->cur_iMCU_row < cinfo->total_iMCU_rows) {
/* Realign the virtual buffers if at the start of an iMCU row. */
if (mainp->rowgroup_ctr == 0) {
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
mainp->buffer[ci] = (*cinfo->mem->access_virt_sarray)
((j_common_ptr) cinfo, mainp->whole_image[ci], mainp->cur_iMCU_row *
((JDIMENSION) (compptr->v_samp_factor * cinfo->min_DCT_v_scaled_size)),
(JDIMENSION) (compptr->v_samp_factor * cinfo->min_DCT_v_scaled_size),
writing);
}
/* In a read pass, pretend we just read some source data. */
if (! writing) {
*in_row_ctr += (JDIMENSION)
(cinfo->max_v_samp_factor * cinfo->min_DCT_v_scaled_size);
mainp->rowgroup_ctr = (JDIMENSION) cinfo->min_DCT_v_scaled_size;
}
}
/* If a write pass, read input data until the current iMCU row is full. */
/* Note: preprocessor will pad if necessary to fill the last iMCU row. */
if (writing) {
(*cinfo->prep->pre_process_data) (cinfo,
input_buf, in_row_ctr, in_rows_avail,
mainp->buffer, &mainp->rowgroup_ctr,
(JDIMENSION) cinfo->min_DCT_v_scaled_size);
/* Return to application if we need more data to fill the iMCU row. */
if (mainp->rowgroup_ctr < (JDIMENSION) cinfo->min_DCT_v_scaled_size)
return;
}
/* Emit data, unless this is a sink-only pass. */
if (mainp->pass_mode != JBUF_SAVE_SOURCE) {
if (! (*cinfo->coef->compress_data) (cinfo, mainp->buffer)) {
/* If compressor did not consume the whole row, then we must need to
* suspend processing and return to the application. In this situation
* we pretend we didn't yet consume the last input row; otherwise, if
* it happened to be the last row of the image, the application would
* think we were done.
*/
if (! mainp->suspended) {
(*in_row_ctr)--;
mainp->suspended = TRUE;
}
return;
}
/* We did finish the row. Undo our little suspension hack if a previous
* call suspended; then mark the main buffer empty.
*/
if (mainp->suspended) {
(*in_row_ctr)++;
mainp->suspended = FALSE;
}
}
/* If get here, we are done with this iMCU row. Mark buffer empty. */
mainp->rowgroup_ctr = 0;
mainp->cur_iMCU_row++;
}
}
#endif /* FULL_MAIN_BUFFER_SUPPORTED */
/*
* Initialize main buffer controller.
*/
GLOBAL(void)
jinit_c_main_controller (j_compress_ptr cinfo, boolean need_full_buffer)
{
my_main_ptr mainp;
int ci;
jpeg_component_info *compptr;
mainp = (my_main_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_main_controller));
cinfo->main = &mainp->pub;
mainp->pub.start_pass = start_pass_main;
/* We don't need to create a buffer in raw-data mode. */
if (cinfo->raw_data_in)
return;
/* Create the buffer. It holds downsampled data, so each component
* may be of a different size.
*/
if (need_full_buffer) {
#ifdef FULL_MAIN_BUFFER_SUPPORTED
/* Allocate a full-image virtual array for each component */
/* Note we pad the bottom to a multiple of the iMCU height */
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
mainp->whole_image[ci] = (*cinfo->mem->request_virt_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
compptr->width_in_blocks * ((JDIMENSION) compptr->DCT_h_scaled_size),
((JDIMENSION) jround_up((long) compptr->height_in_blocks,
(long) compptr->v_samp_factor)) *
((JDIMENSION) cinfo->min_DCT_v_scaled_size),
(JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size));
}
#else
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
#endif
} else {
#ifdef FULL_MAIN_BUFFER_SUPPORTED
mainp->whole_image[0] = NULL; /* flag for no virtual arrays */
#endif
/* Allocate a strip buffer for each component */
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
mainp->buffer[ci] = (*cinfo->mem->alloc_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
compptr->width_in_blocks * ((JDIMENSION) compptr->DCT_h_scaled_size),
(JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size));
}
}
}
libs/jpeg-9/jcmarker.c
-719
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@@ -1,719 +0,0 @@
/*
* jcmarker.c
*
* Copyright (C) 1991-1998, Thomas G. Lane.
* Modified 2003-2012 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains routines to write JPEG datastream markers.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
typedef enum { /* JPEG marker codes */
M_SOF0 = 0xc0,
M_SOF1 = 0xc1,
M_SOF2 = 0xc2,
M_SOF3 = 0xc3,
M_SOF5 = 0xc5,
M_SOF6 = 0xc6,
M_SOF7 = 0xc7,
M_JPG = 0xc8,
M_SOF9 = 0xc9,
M_SOF10 = 0xca,
M_SOF11 = 0xcb,
M_SOF13 = 0xcd,
M_SOF14 = 0xce,
M_SOF15 = 0xcf,
M_DHT = 0xc4,
M_DAC = 0xcc,
M_RST0 = 0xd0,
M_RST1 = 0xd1,
M_RST2 = 0xd2,
M_RST3 = 0xd3,
M_RST4 = 0xd4,
M_RST5 = 0xd5,
M_RST6 = 0xd6,
M_RST7 = 0xd7,
M_SOI = 0xd8,
M_EOI = 0xd9,
M_SOS = 0xda,
M_DQT = 0xdb,
M_DNL = 0xdc,
M_DRI = 0xdd,
M_DHP = 0xde,
M_EXP = 0xdf,
M_APP0 = 0xe0,
M_APP1 = 0xe1,
M_APP2 = 0xe2,
M_APP3 = 0xe3,
M_APP4 = 0xe4,
M_APP5 = 0xe5,
M_APP6 = 0xe6,
M_APP7 = 0xe7,
M_APP8 = 0xe8,
M_APP9 = 0xe9,
M_APP10 = 0xea,
M_APP11 = 0xeb,
M_APP12 = 0xec,
M_APP13 = 0xed,
M_APP14 = 0xee,
M_APP15 = 0xef,
M_JPG0 = 0xf0,
M_JPG8 = 0xf8,
M_JPG13 = 0xfd,
M_COM = 0xfe,
M_TEM = 0x01,
M_ERROR = 0x100
} JPEG_MARKER;
/* Private state */
typedef struct {
struct jpeg_marker_writer pub; /* public fields */
unsigned int last_restart_interval; /* last DRI value emitted; 0 after SOI */
} my_marker_writer;
typedef my_marker_writer * my_marker_ptr;
/*
* Basic output routines.
*
* Note that we do not support suspension while writing a marker.
* Therefore, an application using suspension must ensure that there is
* enough buffer space for the initial markers (typ. 600-700 bytes) before
* calling jpeg_start_compress, and enough space to write the trailing EOI
* (a few bytes) before calling jpeg_finish_compress. Multipass compression
* modes are not supported at all with suspension, so those two are the only
* points where markers will be written.
*/
LOCAL(void)
emit_byte (j_compress_ptr cinfo, int val)
/* Emit a byte */
{
struct jpeg_destination_mgr * dest = cinfo->dest;
*(dest->next_output_byte)++ = (JOCTET) val;
if (--dest->free_in_buffer == 0) {
if (! (*dest->empty_output_buffer) (cinfo))
ERREXIT(cinfo, JERR_CANT_SUSPEND);
}
}
LOCAL(void)
emit_marker (j_compress_ptr cinfo, JPEG_MARKER mark)
/* Emit a marker code */
{
emit_byte(cinfo, 0xFF);
emit_byte(cinfo, (int) mark);
}
LOCAL(void)
emit_2bytes (j_compress_ptr cinfo, int value)
/* Emit a 2-byte integer; these are always MSB first in JPEG files */
{
emit_byte(cinfo, (value >> 8) & 0xFF);
emit_byte(cinfo, value & 0xFF);
}
/*
* Routines to write specific marker types.
*/
LOCAL(int)
emit_dqt (j_compress_ptr cinfo, int index)
/* Emit a DQT marker */
/* Returns the precision used (0 = 8bits, 1 = 16bits) for baseline checking */
{
JQUANT_TBL * qtbl = cinfo->quant_tbl_ptrs[index];
int prec;
int i;
if (qtbl == NULL)
ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, index);
prec = 0;
for (i = 0; i <= cinfo->lim_Se; i++) {
if (qtbl->quantval[cinfo->natural_order[i]] > 255)
prec = 1;
}
if (! qtbl->sent_table) {
emit_marker(cinfo, M_DQT);
emit_2bytes(cinfo,
prec ? cinfo->lim_Se * 2 + 2 + 1 + 2 : cinfo->lim_Se + 1 + 1 + 2);
emit_byte(cinfo, index + (prec<<4));
for (i = 0; i <= cinfo->lim_Se; i++) {
/* The table entries must be emitted in zigzag order. */
unsigned int qval = qtbl->quantval[cinfo->natural_order[i]];
if (prec)
emit_byte(cinfo, (int) (qval >> 8));
emit_byte(cinfo, (int) (qval & 0xFF));
}
qtbl->sent_table = TRUE;
}
return prec;
}
LOCAL(void)
emit_dht (j_compress_ptr cinfo, int index, boolean is_ac)
/* Emit a DHT marker */
{
JHUFF_TBL * htbl;
int length, i;
if (is_ac) {
htbl = cinfo->ac_huff_tbl_ptrs[index];
index += 0x10; /* output index has AC bit set */
} else {
htbl = cinfo->dc_huff_tbl_ptrs[index];
}
if (htbl == NULL)
ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, index);
if (! htbl->sent_table) {
emit_marker(cinfo, M_DHT);
length = 0;
for (i = 1; i <= 16; i++)
length += htbl->bits[i];
emit_2bytes(cinfo, length + 2 + 1 + 16);
emit_byte(cinfo, index);
for (i = 1; i <= 16; i++)
emit_byte(cinfo, htbl->bits[i]);
for (i = 0; i < length; i++)
emit_byte(cinfo, htbl->huffval[i]);
htbl->sent_table = TRUE;
}
}
LOCAL(void)
emit_dac (j_compress_ptr cinfo)
/* Emit a DAC marker */
/* Since the useful info is so small, we want to emit all the tables in */
/* one DAC marker. Therefore this routine does its own scan of the table. */
{
#ifdef C_ARITH_CODING_SUPPORTED
char dc_in_use[NUM_ARITH_TBLS];
char ac_in_use[NUM_ARITH_TBLS];
int length, i;
jpeg_component_info *compptr;
for (i = 0; i < NUM_ARITH_TBLS; i++)
dc_in_use[i] = ac_in_use[i] = 0;
for (i = 0; i < cinfo->comps_in_scan; i++) {
compptr = cinfo->cur_comp_info[i];
/* DC needs no table for refinement scan */
if (cinfo->Ss == 0 && cinfo->Ah == 0)
dc_in_use[compptr->dc_tbl_no] = 1;
/* AC needs no table when not present */
if (cinfo->Se)
ac_in_use[compptr->ac_tbl_no] = 1;
}
length = 0;
for (i = 0; i < NUM_ARITH_TBLS; i++)
length += dc_in_use[i] + ac_in_use[i];
if (length) {
emit_marker(cinfo, M_DAC);
emit_2bytes(cinfo, length*2 + 2);
for (i = 0; i < NUM_ARITH_TBLS; i++) {
if (dc_in_use[i]) {
emit_byte(cinfo, i);
emit_byte(cinfo, cinfo->arith_dc_L[i] + (cinfo->arith_dc_U[i]<<4));
}
if (ac_in_use[i]) {
emit_byte(cinfo, i + 0x10);
emit_byte(cinfo, cinfo->arith_ac_K[i]);
}
}
}
#endif /* C_ARITH_CODING_SUPPORTED */
}
LOCAL(void)
emit_dri (j_compress_ptr cinfo)
/* Emit a DRI marker */
{
emit_marker(cinfo, M_DRI);
emit_2bytes(cinfo, 4); /* fixed length */
emit_2bytes(cinfo, (int) cinfo->restart_interval);
}
LOCAL(void)
emit_lse_ict (j_compress_ptr cinfo)
/* Emit an LSE inverse color transform specification marker */
{
/* Support only 1 transform */
if (cinfo->color_transform != JCT_SUBTRACT_GREEN ||
cinfo->num_components < 3)
ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
emit_marker(cinfo, M_JPG8);
emit_2bytes(cinfo, 24); /* fixed length */
emit_byte(cinfo, 0x0D); /* ID inverse transform specification */
emit_2bytes(cinfo, MAXJSAMPLE); /* MAXTRANS */
emit_byte(cinfo, 3); /* Nt=3 */
emit_byte(cinfo, cinfo->comp_info[1].component_id);
emit_byte(cinfo, cinfo->comp_info[0].component_id);
emit_byte(cinfo, cinfo->comp_info[2].component_id);
emit_byte(cinfo, 0x80); /* F1: CENTER1=1, NORM1=0 */
emit_2bytes(cinfo, 0); /* A(1,1)=0 */
emit_2bytes(cinfo, 0); /* A(1,2)=0 */
emit_byte(cinfo, 0); /* F2: CENTER2=0, NORM2=0 */
emit_2bytes(cinfo, 1); /* A(2,1)=1 */
emit_2bytes(cinfo, 0); /* A(2,2)=0 */
emit_byte(cinfo, 0); /* F3: CENTER3=0, NORM3=0 */
emit_2bytes(cinfo, 1); /* A(3,1)=1 */
emit_2bytes(cinfo, 0); /* A(3,2)=0 */
}
LOCAL(void)
emit_sof (j_compress_ptr cinfo, JPEG_MARKER code)
/* Emit a SOF marker */
{
int ci;
jpeg_component_info *compptr;
emit_marker(cinfo, code);
emit_2bytes(cinfo, 3 * cinfo->num_components + 2 + 5 + 1); /* length */
/* Make sure image isn't bigger than SOF field can handle */
if ((long) cinfo->jpeg_height > 65535L ||
(long) cinfo->jpeg_width > 65535L)
ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) 65535);
emit_byte(cinfo, cinfo->data_precision);
emit_2bytes(cinfo, (int) cinfo->jpeg_height);
emit_2bytes(cinfo, (int) cinfo->jpeg_width);
emit_byte(cinfo, cinfo->num_components);
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
emit_byte(cinfo, compptr->component_id);
emit_byte(cinfo, (compptr->h_samp_factor << 4) + compptr->v_samp_factor);
emit_byte(cinfo, compptr->quant_tbl_no);
}
}
LOCAL(void)
emit_sos (j_compress_ptr cinfo)
/* Emit a SOS marker */
{
int i, td, ta;
jpeg_component_info *compptr;
emit_marker(cinfo, M_SOS);
emit_2bytes(cinfo, 2 * cinfo->comps_in_scan + 2 + 1 + 3); /* length */
emit_byte(cinfo, cinfo->comps_in_scan);
for (i = 0; i < cinfo->comps_in_scan; i++) {
compptr = cinfo->cur_comp_info[i];
emit_byte(cinfo, compptr->component_id);
/* We emit 0 for unused field(s); this is recommended by the P&M text
* but does not seem to be specified in the standard.
*/
/* DC needs no table for refinement scan */
td = cinfo->Ss == 0 && cinfo->Ah == 0 ? compptr->dc_tbl_no : 0;
/* AC needs no table when not present */
ta = cinfo->Se ? compptr->ac_tbl_no : 0;
emit_byte(cinfo, (td << 4) + ta);
}
emit_byte(cinfo, cinfo->Ss);
emit_byte(cinfo, cinfo->Se);
emit_byte(cinfo, (cinfo->Ah << 4) + cinfo->Al);
}
LOCAL(void)
emit_pseudo_sos (j_compress_ptr cinfo)
/* Emit a pseudo SOS marker */
{
emit_marker(cinfo, M_SOS);
emit_2bytes(cinfo, 2 + 1 + 3); /* length */
emit_byte(cinfo, 0); /* Ns */
emit_byte(cinfo, 0); /* Ss */
emit_byte(cinfo, cinfo->block_size * cinfo->block_size - 1); /* Se */
emit_byte(cinfo, 0); /* Ah/Al */
}
LOCAL(void)
emit_jfif_app0 (j_compress_ptr cinfo)
/* Emit a JFIF-compliant APP0 marker */
{
/*
* Length of APP0 block (2 bytes)
* Block ID (4 bytes - ASCII "JFIF")
* Zero byte (1 byte to terminate the ID string)
* Version Major, Minor (2 bytes - major first)
* Units (1 byte - 0x00 = none, 0x01 = inch, 0x02 = cm)
* Xdpu (2 bytes - dots per unit horizontal)
* Ydpu (2 bytes - dots per unit vertical)
* Thumbnail X size (1 byte)
* Thumbnail Y size (1 byte)
*/
emit_marker(cinfo, M_APP0);
emit_2bytes(cinfo, 2 + 4 + 1 + 2 + 1 + 2 + 2 + 1 + 1); /* length */
emit_byte(cinfo, 0x4A); /* Identifier: ASCII "JFIF" */
emit_byte(cinfo, 0x46);
emit_byte(cinfo, 0x49);
emit_byte(cinfo, 0x46);
emit_byte(cinfo, 0);
emit_byte(cinfo, cinfo->JFIF_major_version); /* Version fields */
emit_byte(cinfo, cinfo->JFIF_minor_version);
emit_byte(cinfo, cinfo->density_unit); /* Pixel size information */
emit_2bytes(cinfo, (int) cinfo->X_density);
emit_2bytes(cinfo, (int) cinfo->Y_density);
emit_byte(cinfo, 0); /* No thumbnail image */
emit_byte(cinfo, 0);
}
LOCAL(void)
emit_adobe_app14 (j_compress_ptr cinfo)
/* Emit an Adobe APP14 marker */
{
/*
* Length of APP14 block (2 bytes)
* Block ID (5 bytes - ASCII "Adobe")
* Version Number (2 bytes - currently 100)
* Flags0 (2 bytes - currently 0)
* Flags1 (2 bytes - currently 0)
* Color transform (1 byte)
*
* Although Adobe TN 5116 mentions Version = 101, all the Adobe files
* now in circulation seem to use Version = 100, so that's what we write.
*
* We write the color transform byte as 1 if the JPEG color space is
* YCbCr, 2 if it's YCCK, 0 otherwise. Adobe's definition has to do with
* whether the encoder performed a transformation, which is pretty useless.
*/
emit_marker(cinfo, M_APP14);
emit_2bytes(cinfo, 2 + 5 + 2 + 2 + 2 + 1); /* length */
emit_byte(cinfo, 0x41); /* Identifier: ASCII "Adobe" */
emit_byte(cinfo, 0x64);
emit_byte(cinfo, 0x6F);
emit_byte(cinfo, 0x62);
emit_byte(cinfo, 0x65);
emit_2bytes(cinfo, 100); /* Version */
emit_2bytes(cinfo, 0); /* Flags0 */
emit_2bytes(cinfo, 0); /* Flags1 */
switch (cinfo->jpeg_color_space) {
case JCS_YCbCr:
emit_byte(cinfo, 1); /* Color transform = 1 */
break;
case JCS_YCCK:
emit_byte(cinfo, 2); /* Color transform = 2 */
break;
default:
emit_byte(cinfo, 0); /* Color transform = 0 */
break;
}
}
/*
* These routines allow writing an arbitrary marker with parameters.
* The only intended use is to emit COM or APPn markers after calling
* write_file_header and before calling write_frame_header.
* Other uses are not guaranteed to produce desirable results.
* Counting the parameter bytes properly is the caller's responsibility.
*/
METHODDEF(void)
write_marker_header (j_compress_ptr cinfo, int marker, unsigned int datalen)
/* Emit an arbitrary marker header */
{
if (datalen > (unsigned int) 65533) /* safety check */
ERREXIT(cinfo, JERR_BAD_LENGTH);
emit_marker(cinfo, (JPEG_MARKER) marker);
emit_2bytes(cinfo, (int) (datalen + 2)); /* total length */
}
METHODDEF(void)
write_marker_byte (j_compress_ptr cinfo, int val)
/* Emit one byte of marker parameters following write_marker_header */
{
emit_byte(cinfo, val);
}
/*
* Write datastream header.
* This consists of an SOI and optional APPn markers.
* We recommend use of the JFIF marker, but not the Adobe marker,
* when using YCbCr or grayscale data. The JFIF marker should NOT
* be used for any other JPEG colorspace. The Adobe marker is helpful
* to distinguish RGB, CMYK, and YCCK colorspaces.
* Note that an application can write additional header markers after
* jpeg_start_compress returns.
*/
METHODDEF(void)
write_file_header (j_compress_ptr cinfo)
{
my_marker_ptr marker = (my_marker_ptr) cinfo->marker;
emit_marker(cinfo, M_SOI); /* first the SOI */
/* SOI is defined to reset restart interval to 0 */
marker->last_restart_interval = 0;
if (cinfo->write_JFIF_header) /* next an optional JFIF APP0 */
emit_jfif_app0(cinfo);
if (cinfo->write_Adobe_marker) /* next an optional Adobe APP14 */
emit_adobe_app14(cinfo);
}
/*
* Write frame header.
* This consists of DQT and SOFn markers,
* a conditional LSE marker and a conditional pseudo SOS marker.
* Note that we do not emit the SOF until we have emitted the DQT(s).
* This avoids compatibility problems with incorrect implementations that
* try to error-check the quant table numbers as soon as they see the SOF.
*/
METHODDEF(void)
write_frame_header (j_compress_ptr cinfo)
{
int ci, prec;
boolean is_baseline;
jpeg_component_info *compptr;
/* Emit DQT for each quantization table.
* Note that emit_dqt() suppresses any duplicate tables.
*/
prec = 0;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
prec += emit_dqt(cinfo, compptr->quant_tbl_no);
}
/* now prec is nonzero iff there are any 16-bit quant tables. */
/* Check for a non-baseline specification.
* Note we assume that Huffman table numbers won't be changed later.
*/
if (cinfo->arith_code || cinfo->progressive_mode ||
cinfo->data_precision != 8 || cinfo->block_size != DCTSIZE) {
is_baseline = FALSE;
} else {
is_baseline = TRUE;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
if (compptr->dc_tbl_no > 1 || compptr->ac_tbl_no > 1)
is_baseline = FALSE;
}
if (prec && is_baseline) {
is_baseline = FALSE;
/* If it's baseline except for quantizer size, warn the user */
TRACEMS(cinfo, 0, JTRC_16BIT_TABLES);
}
}
/* Emit the proper SOF marker */
if (cinfo->arith_code) {
if (cinfo->progressive_mode)
emit_sof(cinfo, M_SOF10); /* SOF code for progressive arithmetic */
else
emit_sof(cinfo, M_SOF9); /* SOF code for sequential arithmetic */
} else {
if (cinfo->progressive_mode)
emit_sof(cinfo, M_SOF2); /* SOF code for progressive Huffman */
else if (is_baseline)
emit_sof(cinfo, M_SOF0); /* SOF code for baseline implementation */
else
emit_sof(cinfo, M_SOF1); /* SOF code for non-baseline Huffman file */
}
/* Check to emit LSE inverse color transform specification marker */
if (cinfo->color_transform)
emit_lse_ict(cinfo);
/* Check to emit pseudo SOS marker */
if (cinfo->progressive_mode && cinfo->block_size != DCTSIZE)
emit_pseudo_sos(cinfo);
}
/*
* Write scan header.
* This consists of DHT or DAC markers, optional DRI, and SOS.
* Compressed data will be written following the SOS.
*/
METHODDEF(void)
write_scan_header (j_compress_ptr cinfo)
{
my_marker_ptr marker = (my_marker_ptr) cinfo->marker;
int i;
jpeg_component_info *compptr;
if (cinfo->arith_code) {
/* Emit arith conditioning info. We may have some duplication
* if the file has multiple scans, but it's so small it's hardly
* worth worrying about.
*/
emit_dac(cinfo);
} else {
/* Emit Huffman tables.
* Note that emit_dht() suppresses any duplicate tables.
*/
for (i = 0; i < cinfo->comps_in_scan; i++) {
compptr = cinfo->cur_comp_info[i];
/* DC needs no table for refinement scan */
if (cinfo->Ss == 0 && cinfo->Ah == 0)
emit_dht(cinfo, compptr->dc_tbl_no, FALSE);
/* AC needs no table when not present */
if (cinfo->Se)
emit_dht(cinfo, compptr->ac_tbl_no, TRUE);
}
}
/* Emit DRI if required --- note that DRI value could change for each scan.
* We avoid wasting space with unnecessary DRIs, however.
*/
if (cinfo->restart_interval != marker->last_restart_interval) {
emit_dri(cinfo);
marker->last_restart_interval = cinfo->restart_interval;
}
emit_sos(cinfo);
}
/*
* Write datastream trailer.
*/
METHODDEF(void)
write_file_trailer (j_compress_ptr cinfo)
{
emit_marker(cinfo, M_EOI);
}
/*
* Write an abbreviated table-specification datastream.
* This consists of SOI, DQT and DHT tables, and EOI.
* Any table that is defined and not marked sent_table = TRUE will be
* emitted. Note that all tables will be marked sent_table = TRUE at exit.
*/
METHODDEF(void)
write_tables_only (j_compress_ptr cinfo)
{
int i;
emit_marker(cinfo, M_SOI);
for (i = 0; i < NUM_QUANT_TBLS; i++) {
if (cinfo->quant_tbl_ptrs[i] != NULL)
(void) emit_dqt(cinfo, i);
}
if (! cinfo->arith_code) {
for (i = 0; i < NUM_HUFF_TBLS; i++) {
if (cinfo->dc_huff_tbl_ptrs[i] != NULL)
emit_dht(cinfo, i, FALSE);
if (cinfo->ac_huff_tbl_ptrs[i] != NULL)
emit_dht(cinfo, i, TRUE);
}
}
emit_marker(cinfo, M_EOI);
}
/*
* Initialize the marker writer module.
*/
GLOBAL(void)
jinit_marker_writer (j_compress_ptr cinfo)
{
my_marker_ptr marker;
/* Create the subobject */
marker = (my_marker_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_marker_writer));
cinfo->marker = &marker->pub;
/* Initialize method pointers */
marker->pub.write_file_header = write_file_header;
marker->pub.write_frame_header = write_frame_header;
marker->pub.write_scan_header = write_scan_header;
marker->pub.write_file_trailer = write_file_trailer;
marker->pub.write_tables_only = write_tables_only;
marker->pub.write_marker_header = write_marker_header;
marker->pub.write_marker_byte = write_marker_byte;
/* Initialize private state */
marker->last_restart_interval = 0;
}
libs/jpeg-9/jcmaster.c
-858
View File
@@ -1,858 +0,0 @@
/*
* jcmaster.c
*
* Copyright (C) 1991-1997, Thomas G. Lane.
* Modified 2003-2011 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains master control logic for the JPEG compressor.
* These routines are concerned with parameter validation, initial setup,
* and inter-pass control (determining the number of passes and the work
* to be done in each pass).
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* Private state */
typedef enum {
main_pass, /* input data, also do first output step */
huff_opt_pass, /* Huffman code optimization pass */
output_pass /* data output pass */
} c_pass_type;
typedef struct {
struct jpeg_comp_master pub; /* public fields */
c_pass_type pass_type; /* the type of the current pass */
int pass_number; /* # of passes completed */
int total_passes; /* total # of passes needed */
int scan_number; /* current index in scan_info[] */
} my_comp_master;
typedef my_comp_master * my_master_ptr;
/*
* Support routines that do various essential calculations.
*/
/*
* Compute JPEG image dimensions and related values.
* NOTE: this is exported for possible use by application.
* Hence it mustn't do anything that can't be done twice.
*/
GLOBAL(void)
jpeg_calc_jpeg_dimensions (j_compress_ptr cinfo)
/* Do computations that are needed before master selection phase */
{
#ifdef DCT_SCALING_SUPPORTED
/* Sanity check on input image dimensions to prevent overflow in
* following calculation.
* We do check jpeg_width and jpeg_height in initial_setup below,
* but image_width and image_height can come from arbitrary data,
* and we need some space for multiplication by block_size.
*/
if (((long) cinfo->image_width >> 24) || ((long) cinfo->image_height >> 24))
ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
/* Compute actual JPEG image dimensions and DCT scaling choices. */
if (cinfo->scale_num >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/1 scaling */
cinfo->jpeg_width = cinfo->image_width * cinfo->block_size;
cinfo->jpeg_height = cinfo->image_height * cinfo->block_size;
cinfo->min_DCT_h_scaled_size = 1;
cinfo->min_DCT_v_scaled_size = 1;
} else if (cinfo->scale_num * 2 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/2 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 2L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 2L);
cinfo->min_DCT_h_scaled_size = 2;
cinfo->min_DCT_v_scaled_size = 2;
} else if (cinfo->scale_num * 3 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/3 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 3L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 3L);
cinfo->min_DCT_h_scaled_size = 3;
cinfo->min_DCT_v_scaled_size = 3;
} else if (cinfo->scale_num * 4 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/4 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 4L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 4L);
cinfo->min_DCT_h_scaled_size = 4;
cinfo->min_DCT_v_scaled_size = 4;
} else if (cinfo->scale_num * 5 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/5 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 5L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 5L);
cinfo->min_DCT_h_scaled_size = 5;
cinfo->min_DCT_v_scaled_size = 5;
} else if (cinfo->scale_num * 6 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/6 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 6L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 6L);
cinfo->min_DCT_h_scaled_size = 6;
cinfo->min_DCT_v_scaled_size = 6;
} else if (cinfo->scale_num * 7 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/7 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 7L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 7L);
cinfo->min_DCT_h_scaled_size = 7;
cinfo->min_DCT_v_scaled_size = 7;
} else if (cinfo->scale_num * 8 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/8 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 8L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 8L);
cinfo->min_DCT_h_scaled_size = 8;
cinfo->min_DCT_v_scaled_size = 8;
} else if (cinfo->scale_num * 9 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/9 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 9L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 9L);
cinfo->min_DCT_h_scaled_size = 9;
cinfo->min_DCT_v_scaled_size = 9;
} else if (cinfo->scale_num * 10 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/10 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 10L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 10L);
cinfo->min_DCT_h_scaled_size = 10;
cinfo->min_DCT_v_scaled_size = 10;
} else if (cinfo->scale_num * 11 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/11 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 11L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 11L);
cinfo->min_DCT_h_scaled_size = 11;
cinfo->min_DCT_v_scaled_size = 11;
} else if (cinfo->scale_num * 12 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/12 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 12L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 12L);
cinfo->min_DCT_h_scaled_size = 12;
cinfo->min_DCT_v_scaled_size = 12;
} else if (cinfo->scale_num * 13 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/13 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 13L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 13L);
cinfo->min_DCT_h_scaled_size = 13;
cinfo->min_DCT_v_scaled_size = 13;
} else if (cinfo->scale_num * 14 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/14 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 14L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 14L);
cinfo->min_DCT_h_scaled_size = 14;
cinfo->min_DCT_v_scaled_size = 14;
} else if (cinfo->scale_num * 15 >= cinfo->scale_denom * cinfo->block_size) {
/* Provide block_size/15 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 15L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 15L);
cinfo->min_DCT_h_scaled_size = 15;
cinfo->min_DCT_v_scaled_size = 15;
} else {
/* Provide block_size/16 scaling */
cinfo->jpeg_width = (JDIMENSION)
jdiv_round_up((long) cinfo->image_width * cinfo->block_size, 16L);
cinfo->jpeg_height = (JDIMENSION)
jdiv_round_up((long) cinfo->image_height * cinfo->block_size, 16L);
cinfo->min_DCT_h_scaled_size = 16;
cinfo->min_DCT_v_scaled_size = 16;
}
#else /* !DCT_SCALING_SUPPORTED */
/* Hardwire it to "no scaling" */
cinfo->jpeg_width = cinfo->image_width;
cinfo->jpeg_height = cinfo->image_height;
cinfo->min_DCT_h_scaled_size = DCTSIZE;
cinfo->min_DCT_v_scaled_size = DCTSIZE;
#endif /* DCT_SCALING_SUPPORTED */
}
LOCAL(void)
jpeg_calc_trans_dimensions (j_compress_ptr cinfo)
{
if (cinfo->min_DCT_h_scaled_size != cinfo->min_DCT_v_scaled_size)
ERREXIT2(cinfo, JERR_BAD_DCTSIZE,
cinfo->min_DCT_h_scaled_size, cinfo->min_DCT_v_scaled_size);
cinfo->block_size = cinfo->min_DCT_h_scaled_size;
}
LOCAL(void)
initial_setup (j_compress_ptr cinfo, boolean transcode_only)
/* Do computations that are needed before master selection phase */
{
int ci, ssize;
jpeg_component_info *compptr;
long samplesperrow;
JDIMENSION jd_samplesperrow;
if (transcode_only)
jpeg_calc_trans_dimensions(cinfo);
else
jpeg_calc_jpeg_dimensions(cinfo);
/* Sanity check on block_size */
if (cinfo->block_size < 1 || cinfo->block_size > 16)
ERREXIT2(cinfo, JERR_BAD_DCTSIZE, cinfo->block_size, cinfo->block_size);
/* Derive natural_order from block_size */
switch (cinfo->block_size) {
case 2: cinfo->natural_order = jpeg_natural_order2; break;
case 3: cinfo->natural_order = jpeg_natural_order3; break;
case 4: cinfo->natural_order = jpeg_natural_order4; break;
case 5: cinfo->natural_order = jpeg_natural_order5; break;
case 6: cinfo->natural_order = jpeg_natural_order6; break;
case 7: cinfo->natural_order = jpeg_natural_order7; break;
default: cinfo->natural_order = jpeg_natural_order; break;
}
/* Derive lim_Se from block_size */
cinfo->lim_Se = cinfo->block_size < DCTSIZE ?
cinfo->block_size * cinfo->block_size - 1 : DCTSIZE2-1;
/* Sanity check on image dimensions */
if (cinfo->jpeg_height <= 0 || cinfo->jpeg_width <= 0 ||
cinfo->num_components <= 0 || cinfo->input_components <= 0)
ERREXIT(cinfo, JERR_EMPTY_IMAGE);
/* Make sure image isn't bigger than I can handle */
if ((long) cinfo->jpeg_height > (long) JPEG_MAX_DIMENSION ||
(long) cinfo->jpeg_width > (long) JPEG_MAX_DIMENSION)
ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
/* Width of an input scanline must be representable as JDIMENSION. */
samplesperrow = (long) cinfo->image_width * (long) cinfo->input_components;
jd_samplesperrow = (JDIMENSION) samplesperrow;
if ((long) jd_samplesperrow != samplesperrow)
ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
/* For now, precision must match compiled-in value... */
if (cinfo->data_precision != BITS_IN_JSAMPLE)
ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
/* Check that number of components won't exceed internal array sizes */
if (cinfo->num_components > MAX_COMPONENTS)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
MAX_COMPONENTS);
/* Compute maximum sampling factors; check factor validity */
cinfo->max_h_samp_factor = 1;
cinfo->max_v_samp_factor = 1;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR ||
compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR)
ERREXIT(cinfo, JERR_BAD_SAMPLING);
cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor,
compptr->h_samp_factor);
cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor,
compptr->v_samp_factor);
}
/* Compute dimensions of components */
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
/* Fill in the correct component_index value; don't rely on application */
compptr->component_index = ci;
/* In selecting the actual DCT scaling for each component, we try to
* scale down the chroma components via DCT scaling rather than downsampling.
* This saves time if the downsampler gets to use 1:1 scaling.
* Note this code adapts subsampling ratios which are powers of 2.
*/
ssize = 1;
#ifdef DCT_SCALING_SUPPORTED
while (cinfo->min_DCT_h_scaled_size * ssize <=
(cinfo->do_fancy_downsampling ? DCTSIZE : DCTSIZE / 2) &&
(cinfo->max_h_samp_factor % (compptr->h_samp_factor * ssize * 2)) == 0) {
ssize = ssize * 2;
}
#endif
compptr->DCT_h_scaled_size = cinfo->min_DCT_h_scaled_size * ssize;
ssize = 1;
#ifdef DCT_SCALING_SUPPORTED
while (cinfo->min_DCT_v_scaled_size * ssize <=
(cinfo->do_fancy_downsampling ? DCTSIZE : DCTSIZE / 2) &&
(cinfo->max_v_samp_factor % (compptr->v_samp_factor * ssize * 2)) == 0) {
ssize = ssize * 2;
}
#endif
compptr->DCT_v_scaled_size = cinfo->min_DCT_v_scaled_size * ssize;
/* We don't support DCT ratios larger than 2. */
if (compptr->DCT_h_scaled_size > compptr->DCT_v_scaled_size * 2)
compptr->DCT_h_scaled_size = compptr->DCT_v_scaled_size * 2;
else if (compptr->DCT_v_scaled_size > compptr->DCT_h_scaled_size * 2)
compptr->DCT_v_scaled_size = compptr->DCT_h_scaled_size * 2;
/* Size in DCT blocks */
compptr->width_in_blocks = (JDIMENSION)
jdiv_round_up((long) cinfo->jpeg_width * (long) compptr->h_samp_factor,
(long) (cinfo->max_h_samp_factor * cinfo->block_size));
compptr->height_in_blocks = (JDIMENSION)
jdiv_round_up((long) cinfo->jpeg_height * (long) compptr->v_samp_factor,
(long) (cinfo->max_v_samp_factor * cinfo->block_size));
/* Size in samples */
compptr->downsampled_width = (JDIMENSION)
jdiv_round_up((long) cinfo->jpeg_width *
(long) (compptr->h_samp_factor * compptr->DCT_h_scaled_size),
(long) (cinfo->max_h_samp_factor * cinfo->block_size));
compptr->downsampled_height = (JDIMENSION)
jdiv_round_up((long) cinfo->jpeg_height *
(long) (compptr->v_samp_factor * compptr->DCT_v_scaled_size),
(long) (cinfo->max_v_samp_factor * cinfo->block_size));
/* Mark component needed (this flag isn't actually used for compression) */
compptr->component_needed = TRUE;
}
/* Compute number of fully interleaved MCU rows (number of times that
* main controller will call coefficient controller).
*/
cinfo->total_iMCU_rows = (JDIMENSION)
jdiv_round_up((long) cinfo->jpeg_height,
(long) (cinfo->max_v_samp_factor * cinfo->block_size));
}
#ifdef C_MULTISCAN_FILES_SUPPORTED
LOCAL(void)
validate_script (j_compress_ptr cinfo)
/* Verify that the scan script in cinfo->scan_info[] is valid; also
* determine whether it uses progressive JPEG, and set cinfo->progressive_mode.
*/
{
const jpeg_scan_info * scanptr;
int scanno, ncomps, ci, coefi, thisi;
int Ss, Se, Ah, Al;
boolean component_sent[MAX_COMPONENTS];
#ifdef C_PROGRESSIVE_SUPPORTED
int * last_bitpos_ptr;
int last_bitpos[MAX_COMPONENTS][DCTSIZE2];
/* -1 until that coefficient has been seen; then last Al for it */
#endif
if (cinfo->num_scans <= 0)
ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, 0);
/* For sequential JPEG, all scans must have Ss=0, Se=DCTSIZE2-1;
* for progressive JPEG, no scan can have this.
*/
scanptr = cinfo->scan_info;
if (scanptr->Ss != 0 || scanptr->Se != DCTSIZE2-1) {
#ifdef C_PROGRESSIVE_SUPPORTED
cinfo->progressive_mode = TRUE;
last_bitpos_ptr = & last_bitpos[0][0];
for (ci = 0; ci < cinfo->num_components; ci++)
for (coefi = 0; coefi < DCTSIZE2; coefi++)
*last_bitpos_ptr++ = -1;
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else {
cinfo->progressive_mode = FALSE;
for (ci = 0; ci < cinfo->num_components; ci++)
component_sent[ci] = FALSE;
}
for (scanno = 1; scanno <= cinfo->num_scans; scanptr++, scanno++) {
/* Validate component indexes */
ncomps = scanptr->comps_in_scan;
if (ncomps <= 0 || ncomps > MAX_COMPS_IN_SCAN)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, ncomps, MAX_COMPS_IN_SCAN);
for (ci = 0; ci < ncomps; ci++) {
thisi = scanptr->component_index[ci];
if (thisi < 0 || thisi >= cinfo->num_components)
ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno);
/* Components must appear in SOF order within each scan */
if (ci > 0 && thisi <= scanptr->component_index[ci-1])
ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno);
}
/* Validate progression parameters */
Ss = scanptr->Ss;
Se = scanptr->Se;
Ah = scanptr->Ah;
Al = scanptr->Al;
if (cinfo->progressive_mode) {
#ifdef C_PROGRESSIVE_SUPPORTED
/* The JPEG spec simply gives the ranges 0..13 for Ah and Al, but that
* seems wrong: the upper bound ought to depend on data precision.
* Perhaps they really meant 0..N+1 for N-bit precision.
* Here we allow 0..10 for 8-bit data; Al larger than 10 results in
* out-of-range reconstructed DC values during the first DC scan,
* which might cause problems for some decoders.
*/
#if BITS_IN_JSAMPLE == 8
#define MAX_AH_AL 10
#else
#define MAX_AH_AL 13
#endif
if (Ss < 0 || Ss >= DCTSIZE2 || Se < Ss || Se >= DCTSIZE2 ||
Ah < 0 || Ah > MAX_AH_AL || Al < 0 || Al > MAX_AH_AL)
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
if (Ss == 0) {
if (Se != 0) /* DC and AC together not OK */
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
} else {
if (ncomps != 1) /* AC scans must be for only one component */
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
}
for (ci = 0; ci < ncomps; ci++) {
last_bitpos_ptr = & last_bitpos[scanptr->component_index[ci]][0];
if (Ss != 0 && last_bitpos_ptr[0] < 0) /* AC without prior DC scan */
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
for (coefi = Ss; coefi <= Se; coefi++) {
if (last_bitpos_ptr[coefi] < 0) {
/* first scan of this coefficient */
if (Ah != 0)
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
} else {
/* not first scan */
if (Ah != last_bitpos_ptr[coefi] || Al != Ah-1)
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
}
last_bitpos_ptr[coefi] = Al;
}
}
#endif
} else {
/* For sequential JPEG, all progression parameters must be these: */
if (Ss != 0 || Se != DCTSIZE2-1 || Ah != 0 || Al != 0)
ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);
/* Make sure components are not sent twice */
for (ci = 0; ci < ncomps; ci++) {
thisi = scanptr->component_index[ci];
if (component_sent[thisi])
ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno);
component_sent[thisi] = TRUE;
}
}
}
/* Now verify that everything got sent. */
if (cinfo->progressive_mode) {
#ifdef C_PROGRESSIVE_SUPPORTED
/* For progressive mode, we only check that at least some DC data
* got sent for each component; the spec does not require that all bits
* of all coefficients be transmitted. Would it be wiser to enforce
* transmission of all coefficient bits??
*/
for (ci = 0; ci < cinfo->num_components; ci++) {
if (last_bitpos[ci][0] < 0)
ERREXIT(cinfo, JERR_MISSING_DATA);
}
#endif
} else {
for (ci = 0; ci < cinfo->num_components; ci++) {
if (! component_sent[ci])
ERREXIT(cinfo, JERR_MISSING_DATA);
}
}
}
LOCAL(void)
reduce_script (j_compress_ptr cinfo)
/* Adapt scan script for use with reduced block size;
* assume that script has been validated before.
*/
{
jpeg_scan_info * scanptr;
int idxout, idxin;
/* Circumvent const declaration for this function */
scanptr = (jpeg_scan_info *) cinfo->scan_info;
idxout = 0;
for (idxin = 0; idxin < cinfo->num_scans; idxin++) {
/* After skipping, idxout becomes smaller than idxin */
if (idxin != idxout)
/* Copy rest of data;
* note we stay in given chunk of allocated memory.
*/
scanptr[idxout] = scanptr[idxin];
if (scanptr[idxout].Ss > cinfo->lim_Se)
/* Entire scan out of range - skip this entry */
continue;
if (scanptr[idxout].Se > cinfo->lim_Se)
/* Limit scan to end of block */
scanptr[idxout].Se = cinfo->lim_Se;
idxout++;
}
cinfo->num_scans = idxout;
}
#endif /* C_MULTISCAN_FILES_SUPPORTED */
LOCAL(void)
select_scan_parameters (j_compress_ptr cinfo)
/* Set up the scan parameters for the current scan */
{
int ci;
#ifdef C_MULTISCAN_FILES_SUPPORTED
if (cinfo->scan_info != NULL) {
/* Prepare for current scan --- the script is already validated */
my_master_ptr master = (my_master_ptr) cinfo->master;
const jpeg_scan_info * scanptr = cinfo->scan_info + master->scan_number;
cinfo->comps_in_scan = scanptr->comps_in_scan;
for (ci = 0; ci < scanptr->comps_in_scan; ci++) {
cinfo->cur_comp_info[ci] =
&cinfo->comp_info[scanptr->component_index[ci]];
}
if (cinfo->progressive_mode) {
cinfo->Ss = scanptr->Ss;
cinfo->Se = scanptr->Se;
cinfo->Ah = scanptr->Ah;
cinfo->Al = scanptr->Al;
return;
}
}
else
#endif
{
/* Prepare for single sequential-JPEG scan containing all components */
if (cinfo->num_components > MAX_COMPS_IN_SCAN)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
MAX_COMPS_IN_SCAN);
cinfo->comps_in_scan = cinfo->num_components;
for (ci = 0; ci < cinfo->num_components; ci++) {
cinfo->cur_comp_info[ci] = &cinfo->comp_info[ci];
}
}
cinfo->Ss = 0;
cinfo->Se = cinfo->block_size * cinfo->block_size - 1;
cinfo->Ah = 0;
cinfo->Al = 0;
}
LOCAL(void)
per_scan_setup (j_compress_ptr cinfo)
/* Do computations that are needed before processing a JPEG scan */
/* cinfo->comps_in_scan and cinfo->cur_comp_info[] are already set */
{
int ci, mcublks, tmp;
jpeg_component_info *compptr;
if (cinfo->comps_in_scan == 1) {
/* Noninterleaved (single-component) scan */
compptr = cinfo->cur_comp_info[0];
/* Overall image size in MCUs */
cinfo->MCUs_per_row = compptr->width_in_blocks;
cinfo->MCU_rows_in_scan = compptr->height_in_blocks;
/* For noninterleaved scan, always one block per MCU */
compptr->MCU_width = 1;
compptr->MCU_height = 1;
compptr->MCU_blocks = 1;
compptr->MCU_sample_width = compptr->DCT_h_scaled_size;
compptr->last_col_width = 1;
/* For noninterleaved scans, it is convenient to define last_row_height
* as the number of block rows present in the last iMCU row.
*/
tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
if (tmp == 0) tmp = compptr->v_samp_factor;
compptr->last_row_height = tmp;
/* Prepare array describing MCU composition */
cinfo->blocks_in_MCU = 1;
cinfo->MCU_membership[0] = 0;
} else {
/* Interleaved (multi-component) scan */
if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan,
MAX_COMPS_IN_SCAN);
/* Overall image size in MCUs */
cinfo->MCUs_per_row = (JDIMENSION)
jdiv_round_up((long) cinfo->jpeg_width,
(long) (cinfo->max_h_samp_factor * cinfo->block_size));
cinfo->MCU_rows_in_scan = (JDIMENSION)
jdiv_round_up((long) cinfo->jpeg_height,
(long) (cinfo->max_v_samp_factor * cinfo->block_size));
cinfo->blocks_in_MCU = 0;
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
/* Sampling factors give # of blocks of component in each MCU */
compptr->MCU_width = compptr->h_samp_factor;
compptr->MCU_height = compptr->v_samp_factor;
compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height;
compptr->MCU_sample_width = compptr->MCU_width * compptr->DCT_h_scaled_size;
/* Figure number of non-dummy blocks in last MCU column & row */
tmp = (int) (compptr->width_in_blocks % compptr->MCU_width);
if (tmp == 0) tmp = compptr->MCU_width;
compptr->last_col_width = tmp;
tmp = (int) (compptr->height_in_blocks % compptr->MCU_height);
if (tmp == 0) tmp = compptr->MCU_height;
compptr->last_row_height = tmp;
/* Prepare array describing MCU composition */
mcublks = compptr->MCU_blocks;
if (cinfo->blocks_in_MCU + mcublks > C_MAX_BLOCKS_IN_MCU)
ERREXIT(cinfo, JERR_BAD_MCU_SIZE);
while (mcublks-- > 0) {
cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci;
}
}
}
/* Convert restart specified in rows to actual MCU count. */
/* Note that count must fit in 16 bits, so we provide limiting. */
if (cinfo->restart_in_rows > 0) {
long nominal = (long) cinfo->restart_in_rows * (long) cinfo->MCUs_per_row;
cinfo->restart_interval = (unsigned int) MIN(nominal, 65535L);
}
}
/*
* Per-pass setup.
* This is called at the beginning of each pass. We determine which modules
* will be active during this pass and give them appropriate start_pass calls.
* We also set is_last_pass to indicate whether any more passes will be
* required.
*/
METHODDEF(void)
prepare_for_pass (j_compress_ptr cinfo)
{
my_master_ptr master = (my_master_ptr) cinfo->master;
switch (master->pass_type) {
case main_pass:
/* Initial pass: will collect input data, and do either Huffman
* optimization or data output for the first scan.
*/
select_scan_parameters(cinfo);
per_scan_setup(cinfo);
if (! cinfo->raw_data_in) {
(*cinfo->cconvert->start_pass) (cinfo);
(*cinfo->downsample->start_pass) (cinfo);
(*cinfo->prep->start_pass) (cinfo, JBUF_PASS_THRU);
}
(*cinfo->fdct->start_pass) (cinfo);
(*cinfo->entropy->start_pass) (cinfo, cinfo->optimize_coding);
(*cinfo->coef->start_pass) (cinfo,
(master->total_passes > 1 ?
JBUF_SAVE_AND_PASS : JBUF_PASS_THRU));
(*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU);
if (cinfo->optimize_coding) {
/* No immediate data output; postpone writing frame/scan headers */
master->pub.call_pass_startup = FALSE;
} else {
/* Will write frame/scan headers at first jpeg_write_scanlines call */
master->pub.call_pass_startup = TRUE;
}
break;
#ifdef ENTROPY_OPT_SUPPORTED
case huff_opt_pass:
/* Do Huffman optimization for a scan after the first one. */
select_scan_parameters(cinfo);
per_scan_setup(cinfo);
if (cinfo->Ss != 0 || cinfo->Ah == 0) {
(*cinfo->entropy->start_pass) (cinfo, TRUE);
(*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST);
master->pub.call_pass_startup = FALSE;
break;
}
/* Special case: Huffman DC refinement scans need no Huffman table
* and therefore we can skip the optimization pass for them.
*/
master->pass_type = output_pass;
master->pass_number++;
/*FALLTHROUGH*/
#endif
case output_pass:
/* Do a data-output pass. */
/* We need not repeat per-scan setup if prior optimization pass did it. */
if (! cinfo->optimize_coding) {
select_scan_parameters(cinfo);
per_scan_setup(cinfo);
}
(*cinfo->entropy->start_pass) (cinfo, FALSE);
(*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST);
/* We emit frame/scan headers now */
if (master->scan_number == 0)
(*cinfo->marker->write_frame_header) (cinfo);
(*cinfo->marker->write_scan_header) (cinfo);
master->pub.call_pass_startup = FALSE;
break;
default:
ERREXIT(cinfo, JERR_NOT_COMPILED);
}
master->pub.is_last_pass = (master->pass_number == master->total_passes-1);
/* Set up progress monitor's pass info if present */
if (cinfo->progress != NULL) {
cinfo->progress->completed_passes = master->pass_number;
cinfo->progress->total_passes = master->total_passes;
}
}
/*
* Special start-of-pass hook.
* This is called by jpeg_write_scanlines if call_pass_startup is TRUE.
* In single-pass processing, we need this hook because we don't want to
* write frame/scan headers during jpeg_start_compress; we want to let the
* application write COM markers etc. between jpeg_start_compress and the
* jpeg_write_scanlines loop.
* In multi-pass processing, this routine is not used.
*/
METHODDEF(void)
pass_startup (j_compress_ptr cinfo)
{
cinfo->master->call_pass_startup = FALSE; /* reset flag so call only once */
(*cinfo->marker->write_frame_header) (cinfo);
(*cinfo->marker->write_scan_header) (cinfo);
}
/*
* Finish up at end of pass.
*/
METHODDEF(void)
finish_pass_master (j_compress_ptr cinfo)
{
my_master_ptr master = (my_master_ptr) cinfo->master;
/* The entropy coder always needs an end-of-pass call,
* either to analyze statistics or to flush its output buffer.
*/
(*cinfo->entropy->finish_pass) (cinfo);
/* Update state for next pass */
switch (master->pass_type) {
case main_pass:
/* next pass is either output of scan 0 (after optimization)
* or output of scan 1 (if no optimization).
*/
master->pass_type = output_pass;
if (! cinfo->optimize_coding)
master->scan_number++;
break;
case huff_opt_pass:
/* next pass is always output of current scan */
master->pass_type = output_pass;
break;
case output_pass:
/* next pass is either optimization or output of next scan */
if (cinfo->optimize_coding)
master->pass_type = huff_opt_pass;
master->scan_number++;
break;
}
master->pass_number++;
}
/*
* Initialize master compression control.
*/
GLOBAL(void)
jinit_c_master_control (j_compress_ptr cinfo, boolean transcode_only)
{
my_master_ptr master;
master = (my_master_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_comp_master));
cinfo->master = (struct jpeg_comp_master *) master;
master->pub.prepare_for_pass = prepare_for_pass;
master->pub.pass_startup = pass_startup;
master->pub.finish_pass = finish_pass_master;
master->pub.is_last_pass = FALSE;
/* Validate parameters, determine derived values */
initial_setup(cinfo, transcode_only);
if (cinfo->scan_info != NULL) {
#ifdef C_MULTISCAN_FILES_SUPPORTED
validate_script(cinfo);
if (cinfo->block_size < DCTSIZE)
reduce_script(cinfo);
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else {
cinfo->progressive_mode = FALSE;
cinfo->num_scans = 1;
}
if ((cinfo->progressive_mode || cinfo->block_size < DCTSIZE) &&
!cinfo->arith_code) /* TEMPORARY HACK ??? */
/* assume default tables no good for progressive or downscale mode */
cinfo->optimize_coding = TRUE;
/* Initialize my private state */
if (transcode_only) {
/* no main pass in transcoding */
if (cinfo->optimize_coding)
master->pass_type = huff_opt_pass;
else
master->pass_type = output_pass;
} else {
/* for normal compression, first pass is always this type: */
master->pass_type = main_pass;
}
master->scan_number = 0;
master->pass_number = 0;
if (cinfo->optimize_coding)
master->total_passes = cinfo->num_scans * 2;
else
master->total_passes = cinfo->num_scans;
}
libs/jpeg-9/jcomapi.c
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/*
* jcomapi.c
*
* Copyright (C) 1994-1997, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains application interface routines that are used for both
* compression and decompression.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/*
* Abort processing of a JPEG compression or decompression operation,
* but don't destroy the object itself.
*
* For this, we merely clean up all the nonpermanent memory pools.
* Note that temp files (virtual arrays) are not allowed to belong to
* the permanent pool, so we will be able to close all temp files here.
* Closing a data source or destination, if necessary, is the application's
* responsibility.
*/
GLOBAL(void)
jpeg_abort (j_common_ptr cinfo)
{
int pool;
/* Do nothing if called on a not-initialized or destroyed JPEG object. */
if (cinfo->mem == NULL)
return;
/* Releasing pools in reverse order might help avoid fragmentation
* with some (brain-damaged) malloc libraries.
*/
for (pool = JPOOL_NUMPOOLS-1; pool > JPOOL_PERMANENT; pool--) {
(*cinfo->mem->free_pool) (cinfo, pool);
}
/* Reset overall state for possible reuse of object */
if (cinfo->is_decompressor) {
cinfo->global_state = DSTATE_START;
/* Try to keep application from accessing now-deleted marker list.
* A bit kludgy to do it here, but this is the most central place.
*/
((j_decompress_ptr) cinfo)->marker_list = NULL;
} else {
cinfo->global_state = CSTATE_START;
}
}
/*
* Destruction of a JPEG object.
*
* Everything gets deallocated except the master jpeg_compress_struct itself
* and the error manager struct. Both of these are supplied by the application
* and must be freed, if necessary, by the application. (Often they are on
* the stack and so don't need to be freed anyway.)
* Closing a data source or destination, if necessary, is the application's
* responsibility.
*/
GLOBAL(void)
jpeg_destroy (j_common_ptr cinfo)
{
/* We need only tell the memory manager to release everything. */
/* NB: mem pointer is NULL if memory mgr failed to initialize. */
if (cinfo->mem != NULL)
(*cinfo->mem->self_destruct) (cinfo);
cinfo->mem = NULL; /* be safe if jpeg_destroy is called twice */
cinfo->global_state = 0; /* mark it destroyed */
}
/*
* Convenience routines for allocating quantization and Huffman tables.
* (Would jutils.c be a more reasonable place to put these?)
*/
GLOBAL(JQUANT_TBL *)
jpeg_alloc_quant_table (j_common_ptr cinfo)
{
JQUANT_TBL *tbl;
tbl = (JQUANT_TBL *)
(*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JQUANT_TBL));
tbl->sent_table = FALSE; /* make sure this is false in any new table */
return tbl;
}
GLOBAL(JHUFF_TBL *)
jpeg_alloc_huff_table (j_common_ptr cinfo)
{
JHUFF_TBL *tbl;
tbl = (JHUFF_TBL *)
(*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JHUFF_TBL));
tbl->sent_table = FALSE; /* make sure this is false in any new table */
return tbl;
}
libs/jpeg-9/jconfig.bcc
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@@ -1,48 +0,0 @@
/* jconfig.bcc --- jconfig.h for Borland C (Turbo C) on MS-DOS or OS/2. */
/* see jconfig.txt for explanations */
#define HAVE_PROTOTYPES
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
/* #define void char */
/* #define const */
#undef CHAR_IS_UNSIGNED
#define HAVE_STDDEF_H
#define HAVE_STDLIB_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#ifdef __MSDOS__
#define NEED_FAR_POINTERS /* for small or medium memory model */
#endif
#undef NEED_SHORT_EXTERNAL_NAMES
#undef INCOMPLETE_TYPES_BROKEN /* this assumes you have -w-stu in CFLAGS */
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#ifdef __MSDOS__
#define USE_MSDOS_MEMMGR /* Define this if you use jmemdos.c */
#define MAX_ALLOC_CHUNK 65520L /* Maximum request to malloc() */
#define USE_FMEM /* Borland has _fmemcpy() and _fmemset() */
#endif
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#define TWO_FILE_COMMANDLINE
#define USE_SETMODE /* Borland has setmode() */
#ifdef __MSDOS__
#define NEED_SIGNAL_CATCHER /* Define this if you use jmemdos.c */
#endif
#undef DONT_USE_B_MODE
#undef PROGRESS_REPORT /* optional */
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jconfig.cfg
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@@ -1,53 +0,0 @@
/* jconfig.cfg --- source file edited by configure script */
/* see jconfig.txt for explanations */
#undef HAVE_PROTOTYPES
#undef HAVE_UNSIGNED_CHAR
#undef HAVE_UNSIGNED_SHORT
#undef void
#undef const
#undef CHAR_IS_UNSIGNED
#undef HAVE_STDDEF_H
#undef HAVE_STDLIB_H
#undef HAVE_LOCALE_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#undef NEED_FAR_POINTERS
#undef NEED_SHORT_EXTERNAL_NAMES
/* Define this if you get warnings about undefined structures. */
#undef INCOMPLETE_TYPES_BROKEN
/* Define "boolean" as unsigned char, not int, on Windows systems. */
#ifdef _WIN32
#ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */
typedef unsigned char boolean;
#endif
#define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */
#endif
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#undef INLINE
/* These are for configuring the JPEG memory manager. */
#undef DEFAULT_MAX_MEM
#undef NO_MKTEMP
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#undef TWO_FILE_COMMANDLINE
#undef NEED_SIGNAL_CATCHER
#undef DONT_USE_B_MODE
/* Define this if you want percent-done progress reports from cjpeg/djpeg. */
#undef PROGRESS_REPORT
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jconfig.cmake
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@@ -1,53 +0,0 @@
/* jconfig.cmake --- config for CMake */
/* see jconfig.txt for explanations */
#define HAVE_PROTOTYPES
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
// #undef void
// #undef const
#undef CHAR_IS_UNSIGNED
#cmakedefine HAVE_STDDEF_H
#cmakedefine HAVE_STDLIB_H
#cmakedefine HAVE_LOCALE_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#undef NEED_FAR_POINTERS
#undef NEED_SHORT_EXTERNAL_NAMES
/* Define this if you get warnings about undefined structures. */
#undef INCOMPLETE_TYPES_BROKEN
/* Define "boolean" as unsigned char, not int, on Windows systems. */
#ifdef _WIN32
#ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */
typedef unsigned char boolean;
#endif
#define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */
#endif
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#undef INLINE
/* These are for configuring the JPEG memory manager. */
#undef DEFAULT_MAX_MEM
#undef NO_MKTEMP
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#undef TWO_FILE_COMMANDLINE
#undef NEED_SIGNAL_CATCHER
#undef DONT_USE_B_MODE
/* Define this if you want percent-done progress reports from cjpeg/djpeg. */
#undef PROGRESS_REPORT
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jconfig.dj
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@@ -1,38 +0,0 @@
/* jconfig.dj --- jconfig.h for DJGPP (Delorie's GNU C port) on MS-DOS. */
/* see jconfig.txt for explanations */
#define HAVE_PROTOTYPES
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
/* #define void char */
/* #define const */
#undef CHAR_IS_UNSIGNED
#define HAVE_STDDEF_H
#define HAVE_STDLIB_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#undef NEED_FAR_POINTERS /* DJGPP uses flat 32-bit addressing */
#undef NEED_SHORT_EXTERNAL_NAMES
#undef INCOMPLETE_TYPES_BROKEN
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#undef TWO_FILE_COMMANDLINE /* optional */
#define USE_SETMODE /* Needed to make one-file style work in DJGPP */
#undef NEED_SIGNAL_CATCHER /* Define this if you use jmemname.c */
#undef DONT_USE_B_MODE
#undef PROGRESS_REPORT /* optional */
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jconfig.mac
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@@ -1,43 +0,0 @@
/* jconfig.mac --- jconfig.h for CodeWarrior on Apple Macintosh */
/* see jconfig.txt for explanations */
#define HAVE_PROTOTYPES
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
/* #define void char */
/* #define const */
#undef CHAR_IS_UNSIGNED
#define HAVE_STDDEF_H
#define HAVE_STDLIB_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#undef NEED_FAR_POINTERS
#undef NEED_SHORT_EXTERNAL_NAMES
#undef INCOMPLETE_TYPES_BROKEN
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#define USE_MAC_MEMMGR /* Define this if you use jmemmac.c */
#define ALIGN_TYPE long /* Needed for 680x0 Macs */
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#define USE_CCOMMAND /* Command line reader for Macintosh */
#define TWO_FILE_COMMANDLINE /* Binary I/O thru stdin/stdout doesn't work */
#undef NEED_SIGNAL_CATCHER
#undef DONT_USE_B_MODE
#undef PROGRESS_REPORT /* optional */
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jconfig.manx
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@@ -1,43 +0,0 @@
/* jconfig.manx --- jconfig.h for Amiga systems using Manx Aztec C ver 5.x. */
/* see jconfig.txt for explanations */
#define HAVE_PROTOTYPES
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
/* #define void char */
/* #define const */
#undef CHAR_IS_UNSIGNED
#define HAVE_STDDEF_H
#define HAVE_STDLIB_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#undef NEED_FAR_POINTERS
#undef NEED_SHORT_EXTERNAL_NAMES
#undef INCOMPLETE_TYPES_BROKEN
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#define TEMP_DIRECTORY "JPEGTMP:" /* recommended setting for Amiga */
#define SHORTxSHORT_32 /* produces better DCT code with Aztec C */
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#define TWO_FILE_COMMANDLINE
#define NEED_SIGNAL_CATCHER
#undef DONT_USE_B_MODE
#undef PROGRESS_REPORT /* optional */
#define signal_catcher _abort /* hack for Aztec C naming requirements */
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jconfig.mc6
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@@ -1,52 +0,0 @@
/* jconfig.mc6 --- jconfig.h for Microsoft C on MS-DOS, version 6.00A & up. */
/* see jconfig.txt for explanations */
#define HAVE_PROTOTYPES
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
/* #define void char */
/* #define const */
#undef CHAR_IS_UNSIGNED
#define HAVE_STDDEF_H
#define HAVE_STDLIB_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#define NEED_FAR_POINTERS /* for small or medium memory model */
#undef NEED_SHORT_EXTERNAL_NAMES
#undef INCOMPLETE_TYPES_BROKEN
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#define USE_MSDOS_MEMMGR /* Define this if you use jmemdos.c */
#define MAX_ALLOC_CHUNK 65520L /* Maximum request to malloc() */
#define USE_FMEM /* Microsoft has _fmemcpy() and _fmemset() */
#define NEED_FHEAPMIN /* far heap management routines are broken */
#define SHORTxLCONST_32 /* enable compiler-specific DCT optimization */
/* Note: the above define is known to improve the code with Microsoft C 6.00A.
* I do not know whether it is good for later compiler versions.
* Please report any info on this point to jpeg-info@jpegclub.org.
*/
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#define TWO_FILE_COMMANDLINE
#define USE_SETMODE /* Microsoft has setmode() */
#define NEED_SIGNAL_CATCHER /* Define this if you use jmemdos.c */
#undef DONT_USE_B_MODE
#undef PROGRESS_REPORT /* optional */
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jconfig.sas
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@@ -1,43 +0,0 @@
/* jconfig.sas --- jconfig.h for Amiga systems using SAS C 6.0 and up. */
/* see jconfig.txt for explanations */
#define HAVE_PROTOTYPES
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
/* #define void char */
/* #define const */
#undef CHAR_IS_UNSIGNED
#define HAVE_STDDEF_H
#define HAVE_STDLIB_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#undef NEED_FAR_POINTERS
#undef NEED_SHORT_EXTERNAL_NAMES
#undef INCOMPLETE_TYPES_BROKEN
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#define TEMP_DIRECTORY "JPEGTMP:" /* recommended setting for Amiga */
#define NO_MKTEMP /* SAS C doesn't have mktemp() */
#define SHORTxSHORT_32 /* produces better DCT code with SAS C */
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#define TWO_FILE_COMMANDLINE
#define NEED_SIGNAL_CATCHER
#undef DONT_USE_B_MODE
#undef PROGRESS_REPORT /* optional */
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jconfig.st
-42
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@@ -1,42 +0,0 @@
/* jconfig.st --- jconfig.h for Atari ST/STE/TT using Pure C or Turbo C. */
/* see jconfig.txt for explanations */
#define HAVE_PROTOTYPES
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
/* #define void char */
/* #define const */
#undef CHAR_IS_UNSIGNED
#define HAVE_STDDEF_H
#define HAVE_STDLIB_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#undef NEED_FAR_POINTERS
#undef NEED_SHORT_EXTERNAL_NAMES
#define INCOMPLETE_TYPES_BROKEN /* suppress undefined-structure warnings */
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#define ALIGN_TYPE long /* apparently double is a weird size? */
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#define TWO_FILE_COMMANDLINE /* optional -- undef if you like Unix style */
/* Note: if you undef TWO_FILE_COMMANDLINE, you may need to define
* USE_SETMODE. Some Atari compilers require it, some do not.
*/
#define NEED_SIGNAL_CATCHER /* needed if you use jmemname.c */
#undef DONT_USE_B_MODE
#undef PROGRESS_REPORT /* optional */
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jconfig.txt
-164
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@@ -1,164 +0,0 @@
/*
* jconfig.txt
*
* Copyright (C) 1991-1994, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file documents the configuration options that are required to
* customize the JPEG software for a particular system.
*
* The actual configuration options for a particular installation are stored
* in jconfig.h. On many machines, jconfig.h can be generated automatically
* or copied from one of the "canned" jconfig files that we supply. But if
* you need to generate a jconfig.h file by hand, this file tells you how.
*
* DO NOT EDIT THIS FILE --- IT WON'T ACCOMPLISH ANYTHING.
* EDIT A COPY NAMED JCONFIG.H.
*/
/*
* These symbols indicate the properties of your machine or compiler.
* #define the symbol if yes, #undef it if no.
*/
/* Does your compiler support function prototypes?
* (If not, you also need to use ansi2knr, see install.txt)
*/
#define HAVE_PROTOTYPES
/* Does your compiler support the declaration "unsigned char" ?
* How about "unsigned short" ?
*/
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
/* Define "void" as "char" if your compiler doesn't know about type void.
* NOTE: be sure to define void such that "void *" represents the most general
* pointer type, e.g., that returned by malloc().
*/
/* #define void char */
/* Define "const" as empty if your compiler doesn't know the "const" keyword.
*/
/* #define const */
/* Define this if an ordinary "char" type is unsigned.
* If you're not sure, leaving it undefined will work at some cost in speed.
* If you defined HAVE_UNSIGNED_CHAR then the speed difference is minimal.
*/
#undef CHAR_IS_UNSIGNED
/* Define this if your system has an ANSI-conforming <stddef.h> file.
*/
#define HAVE_STDDEF_H
/* Define this if your system has an ANSI-conforming <stdlib.h> file.
*/
#define HAVE_STDLIB_H
/* Define this if your system does not have an ANSI/SysV <string.h>,
* but does have a BSD-style <strings.h>.
*/
#undef NEED_BSD_STRINGS
/* Define this if your system does not provide typedef size_t in any of the
* ANSI-standard places (stddef.h, stdlib.h, or stdio.h), but places it in
* <sys/types.h> instead.
*/
#undef NEED_SYS_TYPES_H
/* For 80x86 machines, you need to define NEED_FAR_POINTERS,
* unless you are using a large-data memory model or 80386 flat-memory mode.
* On less brain-damaged CPUs this symbol must not be defined.
* (Defining this symbol causes large data structures to be referenced through
* "far" pointers and to be allocated with a special version of malloc.)
*/
#undef NEED_FAR_POINTERS
/* Define this if your linker needs global names to be unique in less
* than the first 15 characters.
*/
#undef NEED_SHORT_EXTERNAL_NAMES
/* Although a real ANSI C compiler can deal perfectly well with pointers to
* unspecified structures (see "incomplete types" in the spec), a few pre-ANSI
* and pseudo-ANSI compilers get confused. To keep one of these bozos happy,
* define INCOMPLETE_TYPES_BROKEN. This is not recommended unless you
* actually get "missing structure definition" warnings or errors while
* compiling the JPEG code.
*/
#undef INCOMPLETE_TYPES_BROKEN
/* Define "boolean" as unsigned char, not int, on Windows systems.
*/
#ifdef _WIN32
#ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */
typedef unsigned char boolean;
#endif
#define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */
#endif
/*
* The following options affect code selection within the JPEG library,
* but they don't need to be visible to applications using the library.
* To minimize application namespace pollution, the symbols won't be
* defined unless JPEG_INTERNALS has been defined.
*/
#ifdef JPEG_INTERNALS
/* Define this if your compiler implements ">>" on signed values as a logical
* (unsigned) shift; leave it undefined if ">>" is a signed (arithmetic) shift,
* which is the normal and rational definition.
*/
#undef RIGHT_SHIFT_IS_UNSIGNED
#endif /* JPEG_INTERNALS */
/*
* The remaining options do not affect the JPEG library proper,
* but only the sample applications cjpeg/djpeg (see cjpeg.c, djpeg.c).
* Other applications can ignore these.
*/
#ifdef JPEG_CJPEG_DJPEG
/* These defines indicate which image (non-JPEG) file formats are allowed. */
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
/* Define this if you want to name both input and output files on the command
* line, rather than using stdout and optionally stdin. You MUST do this if
* your system can't cope with binary I/O to stdin/stdout. See comments at
* head of cjpeg.c or djpeg.c.
*/
#undef TWO_FILE_COMMANDLINE
/* Define this if your system needs explicit cleanup of temporary files.
* This is crucial under MS-DOS, where the temporary "files" may be areas
* of extended memory; on most other systems it's not as important.
*/
#undef NEED_SIGNAL_CATCHER
/* By default, we open image files with fopen(...,"rb") or fopen(...,"wb").
* This is necessary on systems that distinguish text files from binary files,
* and is harmless on most systems that don't. If you have one of the rare
* systems that complains about the "b" spec, define this symbol.
*/
#undef DONT_USE_B_MODE
/* Define this if you want percent-done progress reports from cjpeg/djpeg.
*/
#undef PROGRESS_REPORT
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jconfig.vc
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@@ -1,45 +0,0 @@
/* jconfig.vc --- jconfig.h for Microsoft Visual C++ on Windows 95 or NT. */
/* see jconfig.txt for explanations */
#define HAVE_PROTOTYPES
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
/* #define void char */
/* #define const */
#undef CHAR_IS_UNSIGNED
#define HAVE_STDDEF_H
#define HAVE_STDLIB_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#undef NEED_FAR_POINTERS /* we presume a 32-bit flat memory model */
#undef NEED_SHORT_EXTERNAL_NAMES
#undef INCOMPLETE_TYPES_BROKEN
/* Define "boolean" as unsigned char, not enum, per Windows custom */
#ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */
typedef unsigned char boolean;
#endif
#define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#define TWO_FILE_COMMANDLINE /* optional */
#define USE_SETMODE /* Microsoft has setmode() */
#undef NEED_SIGNAL_CATCHER
#undef DONT_USE_B_MODE
#undef PROGRESS_REPORT /* optional */
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jconfig.vms
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@@ -1,37 +0,0 @@
/* jconfig.vms --- jconfig.h for use on Digital VMS. */
/* see jconfig.txt for explanations */
#define HAVE_PROTOTYPES
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
/* #define void char */
/* #define const */
#undef CHAR_IS_UNSIGNED
#define HAVE_STDDEF_H
#define HAVE_STDLIB_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#undef NEED_FAR_POINTERS
#undef NEED_SHORT_EXTERNAL_NAMES
#undef INCOMPLETE_TYPES_BROKEN
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#define TWO_FILE_COMMANDLINE /* Needed on VMS */
#undef NEED_SIGNAL_CATCHER
#undef DONT_USE_B_MODE
#undef PROGRESS_REPORT /* optional */
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jconfig.wat
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@@ -1,38 +0,0 @@
/* jconfig.wat --- jconfig.h for Watcom C/C++ on MS-DOS or OS/2. */
/* see jconfig.txt for explanations */
#define HAVE_PROTOTYPES
#define HAVE_UNSIGNED_CHAR
#define HAVE_UNSIGNED_SHORT
/* #define void char */
/* #define const */
#define CHAR_IS_UNSIGNED
#define HAVE_STDDEF_H
#define HAVE_STDLIB_H
#undef NEED_BSD_STRINGS
#undef NEED_SYS_TYPES_H
#undef NEED_FAR_POINTERS /* Watcom uses flat 32-bit addressing */
#undef NEED_SHORT_EXTERNAL_NAMES
#undef INCOMPLETE_TYPES_BROKEN
#ifdef JPEG_INTERNALS
#undef RIGHT_SHIFT_IS_UNSIGNED
#endif /* JPEG_INTERNALS */
#ifdef JPEG_CJPEG_DJPEG
#define BMP_SUPPORTED /* BMP image file format */
#define GIF_SUPPORTED /* GIF image file format */
#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */
#undef RLE_SUPPORTED /* Utah RLE image file format */
#define TARGA_SUPPORTED /* Targa image file format */
#undef TWO_FILE_COMMANDLINE /* optional */
#define USE_SETMODE /* Needed to make one-file style work in Watcom */
#undef NEED_SIGNAL_CATCHER /* Define this if you use jmemname.c */
#undef DONT_USE_B_MODE
#undef PROGRESS_REPORT /* optional */
#endif /* JPEG_CJPEG_DJPEG */
libs/jpeg-9/jcparam.c
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@@ -1,637 +0,0 @@
/*
* jcparam.c
*
* Copyright (C) 1991-1998, Thomas G. Lane.
* Modified 2003-2012 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains optional default-setting code for the JPEG compressor.
* Applications do not have to use this file, but those that don't use it
* must know a lot more about the innards of the JPEG code.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/*
* Quantization table setup routines
*/
GLOBAL(void)
jpeg_add_quant_table (j_compress_ptr cinfo, int which_tbl,
const unsigned int *basic_table,
int scale_factor, boolean force_baseline)
/* Define a quantization table equal to the basic_table times
* a scale factor (given as a percentage).
* If force_baseline is TRUE, the computed quantization table entries
* are limited to 1..255 for JPEG baseline compatibility.
*/
{
JQUANT_TBL ** qtblptr;
int i;
long temp;
/* Safety check to ensure start_compress not called yet. */
if (cinfo->global_state != CSTATE_START)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (which_tbl < 0 || which_tbl >= NUM_QUANT_TBLS)
ERREXIT1(cinfo, JERR_DQT_INDEX, which_tbl);
qtblptr = & cinfo->quant_tbl_ptrs[which_tbl];
if (*qtblptr == NULL)
*qtblptr = jpeg_alloc_quant_table((j_common_ptr) cinfo);
for (i = 0; i < DCTSIZE2; i++) {
temp = ((long) basic_table[i] * scale_factor + 50L) / 100L;
/* limit the values to the valid range */
if (temp <= 0L) temp = 1L;
if (temp > 32767L) temp = 32767L; /* max quantizer needed for 12 bits */
if (force_baseline && temp > 255L)
temp = 255L; /* limit to baseline range if requested */
(*qtblptr)->quantval[i] = (UINT16) temp;
}
/* Initialize sent_table FALSE so table will be written to JPEG file. */
(*qtblptr)->sent_table = FALSE;
}
/* These are the sample quantization tables given in JPEG spec section K.1.
* The spec says that the values given produce "good" quality, and
* when divided by 2, "very good" quality.
*/
static const unsigned int std_luminance_quant_tbl[DCTSIZE2] = {
16, 11, 10, 16, 24, 40, 51, 61,
12, 12, 14, 19, 26, 58, 60, 55,
14, 13, 16, 24, 40, 57, 69, 56,
14, 17, 22, 29, 51, 87, 80, 62,
18, 22, 37, 56, 68, 109, 103, 77,
24, 35, 55, 64, 81, 104, 113, 92,
49, 64, 78, 87, 103, 121, 120, 101,
72, 92, 95, 98, 112, 100, 103, 99
};
static const unsigned int std_chrominance_quant_tbl[DCTSIZE2] = {
17, 18, 24, 47, 99, 99, 99, 99,
18, 21, 26, 66, 99, 99, 99, 99,
24, 26, 56, 99, 99, 99, 99, 99,
47, 66, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99
};
GLOBAL(void)
jpeg_default_qtables (j_compress_ptr cinfo, boolean force_baseline)
/* Set or change the 'quality' (quantization) setting, using default tables
* and straight percentage-scaling quality scales.
* This entry point allows different scalings for luminance and chrominance.
*/
{
/* Set up two quantization tables using the specified scaling */
jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl,
cinfo->q_scale_factor[0], force_baseline);
jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl,
cinfo->q_scale_factor[1], force_baseline);
}
GLOBAL(void)
jpeg_set_linear_quality (j_compress_ptr cinfo, int scale_factor,
boolean force_baseline)
/* Set or change the 'quality' (quantization) setting, using default tables
* and a straight percentage-scaling quality scale. In most cases it's better
* to use jpeg_set_quality (below); this entry point is provided for
* applications that insist on a linear percentage scaling.
*/
{
/* Set up two quantization tables using the specified scaling */
jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl,
scale_factor, force_baseline);
jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl,
scale_factor, force_baseline);
}
GLOBAL(int)
jpeg_quality_scaling (int quality)
/* Convert a user-specified quality rating to a percentage scaling factor
* for an underlying quantization table, using our recommended scaling curve.
* The input 'quality' factor should be 0 (terrible) to 100 (very good).
*/
{
/* Safety limit on quality factor. Convert 0 to 1 to avoid zero divide. */
if (quality <= 0) quality = 1;
if (quality > 100) quality = 100;
/* The basic table is used as-is (scaling 100) for a quality of 50.
* Qualities 50..100 are converted to scaling percentage 200 - 2*Q;
* note that at Q=100 the scaling is 0, which will cause jpeg_add_quant_table
* to make all the table entries 1 (hence, minimum quantization loss).
* Qualities 1..50 are converted to scaling percentage 5000/Q.
*/
if (quality < 50)
quality = 5000 / quality;
else
quality = 200 - quality*2;
return quality;
}
GLOBAL(void)
jpeg_set_quality (j_compress_ptr cinfo, int quality, boolean force_baseline)
/* Set or change the 'quality' (quantization) setting, using default tables.
* This is the standard quality-adjusting entry point for typical user
* interfaces; only those who want detailed control over quantization tables
* would use the preceding routines directly.
*/
{
/* Convert user 0-100 rating to percentage scaling */
quality = jpeg_quality_scaling(quality);
/* Set up standard quality tables */
jpeg_set_linear_quality(cinfo, quality, force_baseline);
}
/*
* Huffman table setup routines
*/
LOCAL(void)
add_huff_table (j_compress_ptr cinfo,
JHUFF_TBL **htblptr, const UINT8 *bits, const UINT8 *val)
/* Define a Huffman table */
{
int nsymbols, len;
if (*htblptr == NULL)
*htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo);
/* Copy the number-of-symbols-of-each-code-length counts */
MEMCOPY((*htblptr)->bits, bits, SIZEOF((*htblptr)->bits));
/* Validate the counts. We do this here mainly so we can copy the right
* number of symbols from the val[] array, without risking marching off
* the end of memory. jchuff.c will do a more thorough test later.
*/
nsymbols = 0;
for (len = 1; len <= 16; len++)
nsymbols += bits[len];
if (nsymbols < 1 || nsymbols > 256)
ERREXIT(cinfo, JERR_BAD_HUFF_TABLE);
MEMCOPY((*htblptr)->huffval, val, nsymbols * SIZEOF(UINT8));
/* Initialize sent_table FALSE so table will be written to JPEG file. */
(*htblptr)->sent_table = FALSE;
}
LOCAL(void)
std_huff_tables (j_compress_ptr cinfo)
/* Set up the standard Huffman tables (cf. JPEG standard section K.3) */
/* IMPORTANT: these are only valid for 8-bit data precision! */
{
static const UINT8 bits_dc_luminance[17] =
{ /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 };
static const UINT8 val_dc_luminance[] =
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
static const UINT8 bits_dc_chrominance[17] =
{ /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 };
static const UINT8 val_dc_chrominance[] =
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
static const UINT8 bits_ac_luminance[17] =
{ /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d };
static const UINT8 val_ac_luminance[] =
{ 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
0xf9, 0xfa };
static const UINT8 bits_ac_chrominance[17] =
{ /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 };
static const UINT8 val_ac_chrominance[] =
{ 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
0xf9, 0xfa };
add_huff_table(cinfo, &cinfo->dc_huff_tbl_ptrs[0],
bits_dc_luminance, val_dc_luminance);
add_huff_table(cinfo, &cinfo->ac_huff_tbl_ptrs[0],
bits_ac_luminance, val_ac_luminance);
add_huff_table(cinfo, &cinfo->dc_huff_tbl_ptrs[1],
bits_dc_chrominance, val_dc_chrominance);
add_huff_table(cinfo, &cinfo->ac_huff_tbl_ptrs[1],
bits_ac_chrominance, val_ac_chrominance);
}
/*
* Default parameter setup for compression.
*
* Applications that don't choose to use this routine must do their
* own setup of all these parameters. Alternately, you can call this
* to establish defaults and then alter parameters selectively. This
* is the recommended approach since, if we add any new parameters,
* your code will still work (they'll be set to reasonable defaults).
*/
GLOBAL(void)
jpeg_set_defaults (j_compress_ptr cinfo)
{
int i;
/* Safety check to ensure start_compress not called yet. */
if (cinfo->global_state != CSTATE_START)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* Allocate comp_info array large enough for maximum component count.
* Array is made permanent in case application wants to compress
* multiple images at same param settings.
*/
if (cinfo->comp_info == NULL)
cinfo->comp_info = (jpeg_component_info *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
MAX_COMPONENTS * SIZEOF(jpeg_component_info));
/* Initialize everything not dependent on the color space */
cinfo->scale_num = 1; /* 1:1 scaling */
cinfo->scale_denom = 1;
cinfo->data_precision = BITS_IN_JSAMPLE;
/* Set up two quantization tables using default quality of 75 */
jpeg_set_quality(cinfo, 75, TRUE);
/* Set up two Huffman tables */
std_huff_tables(cinfo);
/* Initialize default arithmetic coding conditioning */
for (i = 0; i < NUM_ARITH_TBLS; i++) {
cinfo->arith_dc_L[i] = 0;
cinfo->arith_dc_U[i] = 1;
cinfo->arith_ac_K[i] = 5;
}
/* Default is no multiple-scan output */
cinfo->scan_info = NULL;
cinfo->num_scans = 0;
/* Expect normal source image, not raw downsampled data */
cinfo->raw_data_in = FALSE;
/* Use Huffman coding, not arithmetic coding, by default */
cinfo->arith_code = FALSE;
/* By default, don't do extra passes to optimize entropy coding */
cinfo->optimize_coding = FALSE;
/* The standard Huffman tables are only valid for 8-bit data precision.
* If the precision is higher, force optimization on so that usable
* tables will be computed. This test can be removed if default tables
* are supplied that are valid for the desired precision.
*/
if (cinfo->data_precision > 8)
cinfo->optimize_coding = TRUE;
/* By default, use the simpler non-cosited sampling alignment */
cinfo->CCIR601_sampling = FALSE;
/* By default, apply fancy downsampling */
cinfo->do_fancy_downsampling = TRUE;
/* No input smoothing */
cinfo->smoothing_factor = 0;
/* DCT algorithm preference */
cinfo->dct_method = JDCT_DEFAULT;
/* No restart markers */
cinfo->restart_interval = 0;
cinfo->restart_in_rows = 0;
/* Fill in default JFIF marker parameters. Note that whether the marker
* will actually be written is determined by jpeg_set_colorspace.
*
* By default, the library emits JFIF version code 1.01.
* An application that wants to emit JFIF 1.02 extension markers should set
* JFIF_minor_version to 2. We could probably get away with just defaulting
* to 1.02, but there may still be some decoders in use that will complain
* about that; saying 1.01 should minimize compatibility problems.
*/
cinfo->JFIF_major_version = 1; /* Default JFIF version = 1.01 */
cinfo->JFIF_minor_version = 1;
cinfo->density_unit = 0; /* Pixel size is unknown by default */
cinfo->X_density = 1; /* Pixel aspect ratio is square by default */
cinfo->Y_density = 1;
/* No color transform */
cinfo->color_transform = JCT_NONE;
/* Choose JPEG colorspace based on input space, set defaults accordingly */
jpeg_default_colorspace(cinfo);
}
/*
* Select an appropriate JPEG colorspace for in_color_space.
*/
GLOBAL(void)
jpeg_default_colorspace (j_compress_ptr cinfo)
{
switch (cinfo->in_color_space) {
case JCS_GRAYSCALE:
jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);
break;
case JCS_RGB:
jpeg_set_colorspace(cinfo, JCS_YCbCr);
break;
case JCS_YCbCr:
jpeg_set_colorspace(cinfo, JCS_YCbCr);
break;
case JCS_CMYK:
jpeg_set_colorspace(cinfo, JCS_CMYK); /* By default, no translation */
break;
case JCS_YCCK:
jpeg_set_colorspace(cinfo, JCS_YCCK);
break;
case JCS_UNKNOWN:
jpeg_set_colorspace(cinfo, JCS_UNKNOWN);
break;
default:
ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE);
}
}
/*
* Set the JPEG colorspace, and choose colorspace-dependent default values.
*/
GLOBAL(void)
jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace)
{
jpeg_component_info * compptr;
int ci;
#define SET_COMP(index,id,hsamp,vsamp,quant,dctbl,actbl) \
(compptr = &cinfo->comp_info[index], \
compptr->component_id = (id), \
compptr->h_samp_factor = (hsamp), \
compptr->v_samp_factor = (vsamp), \
compptr->quant_tbl_no = (quant), \
compptr->dc_tbl_no = (dctbl), \
compptr->ac_tbl_no = (actbl) )
/* Safety check to ensure start_compress not called yet. */
if (cinfo->global_state != CSTATE_START)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* For all colorspaces, we use Q and Huff tables 0 for luminance components,
* tables 1 for chrominance components.
*/
cinfo->jpeg_color_space = colorspace;
cinfo->write_JFIF_header = FALSE; /* No marker for non-JFIF colorspaces */
cinfo->write_Adobe_marker = FALSE; /* write no Adobe marker by default */
switch (colorspace) {
case JCS_GRAYSCALE:
cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */
cinfo->num_components = 1;
/* JFIF specifies component ID 1 */
SET_COMP(0, 1, 1,1, 0, 0,0);
break;
case JCS_RGB:
cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag RGB */
cinfo->num_components = 3;
SET_COMP(0, 0x52 /* 'R' */, 1,1, 0, 0,0);
SET_COMP(1, 0x47 /* 'G' */, 1,1, 0,
cinfo->color_transform == JCT_SUBTRACT_GREEN ? 1 : 0,
cinfo->color_transform == JCT_SUBTRACT_GREEN ? 1 : 0);
SET_COMP(2, 0x42 /* 'B' */, 1,1, 0, 0,0);
break;
case JCS_YCbCr:
cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */
cinfo->num_components = 3;
/* JFIF specifies component IDs 1,2,3 */
/* We default to 2x2 subsamples of chrominance */
SET_COMP(0, 1, 2,2, 0, 0,0);
SET_COMP(1, 2, 1,1, 1, 1,1);
SET_COMP(2, 3, 1,1, 1, 1,1);
break;
case JCS_CMYK:
cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag CMYK */
cinfo->num_components = 4;
SET_COMP(0, 0x43 /* 'C' */, 1,1, 0, 0,0);
SET_COMP(1, 0x4D /* 'M' */, 1,1, 0, 0,0);
SET_COMP(2, 0x59 /* 'Y' */, 1,1, 0, 0,0);
SET_COMP(3, 0x4B /* 'K' */, 1,1, 0, 0,0);
break;
case JCS_YCCK:
cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag YCCK */
cinfo->num_components = 4;
SET_COMP(0, 1, 2,2, 0, 0,0);
SET_COMP(1, 2, 1,1, 1, 1,1);
SET_COMP(2, 3, 1,1, 1, 1,1);
SET_COMP(3, 4, 2,2, 0, 0,0);
break;
case JCS_UNKNOWN:
cinfo->num_components = cinfo->input_components;
if (cinfo->num_components < 1 || cinfo->num_components > MAX_COMPONENTS)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
MAX_COMPONENTS);
for (ci = 0; ci < cinfo->num_components; ci++) {
SET_COMP(ci, ci, 1,1, 0, 0,0);
}
break;
default:
ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
}
}
#ifdef C_PROGRESSIVE_SUPPORTED
LOCAL(jpeg_scan_info *)
fill_a_scan (jpeg_scan_info * scanptr, int ci,
int Ss, int Se, int Ah, int Al)
/* Support routine: generate one scan for specified component */
{
scanptr->comps_in_scan = 1;
scanptr->component_index[0] = ci;
scanptr->Ss = Ss;
scanptr->Se = Se;
scanptr->Ah = Ah;
scanptr->Al = Al;
scanptr++;
return scanptr;
}
LOCAL(jpeg_scan_info *)
fill_scans (jpeg_scan_info * scanptr, int ncomps,
int Ss, int Se, int Ah, int Al)
/* Support routine: generate one scan for each component */
{
int ci;
for (ci = 0; ci < ncomps; ci++) {
scanptr->comps_in_scan = 1;
scanptr->component_index[0] = ci;
scanptr->Ss = Ss;
scanptr->Se = Se;
scanptr->Ah = Ah;
scanptr->Al = Al;
scanptr++;
}
return scanptr;
}
LOCAL(jpeg_scan_info *)
fill_dc_scans (jpeg_scan_info * scanptr, int ncomps, int Ah, int Al)
/* Support routine: generate interleaved DC scan if possible, else N scans */
{
int ci;
if (ncomps <= MAX_COMPS_IN_SCAN) {
/* Single interleaved DC scan */
scanptr->comps_in_scan = ncomps;
for (ci = 0; ci < ncomps; ci++)
scanptr->component_index[ci] = ci;
scanptr->Ss = scanptr->Se = 0;
scanptr->Ah = Ah;
scanptr->Al = Al;
scanptr++;
} else {
/* Noninterleaved DC scan for each component */
scanptr = fill_scans(scanptr, ncomps, 0, 0, Ah, Al);
}
return scanptr;
}
/*
* Create a recommended progressive-JPEG script.
* cinfo->num_components and cinfo->jpeg_color_space must be correct.
*/
GLOBAL(void)
jpeg_simple_progression (j_compress_ptr cinfo)
{
int ncomps = cinfo->num_components;
int nscans;
jpeg_scan_info * scanptr;
/* Safety check to ensure start_compress not called yet. */
if (cinfo->global_state != CSTATE_START)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* Figure space needed for script. Calculation must match code below! */
if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) {
/* Custom script for YCbCr color images. */
nscans = 10;
} else {
/* All-purpose script for other color spaces. */
if (ncomps > MAX_COMPS_IN_SCAN)
nscans = 6 * ncomps; /* 2 DC + 4 AC scans per component */
else
nscans = 2 + 4 * ncomps; /* 2 DC scans; 4 AC scans per component */
}
/* Allocate space for script.
* We need to put it in the permanent pool in case the application performs
* multiple compressions without changing the settings. To avoid a memory
* leak if jpeg_simple_progression is called repeatedly for the same JPEG
* object, we try to re-use previously allocated space, and we allocate
* enough space to handle YCbCr even if initially asked for grayscale.
*/
if (cinfo->script_space == NULL || cinfo->script_space_size < nscans) {
cinfo->script_space_size = MAX(nscans, 10);
cinfo->script_space = (jpeg_scan_info *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
cinfo->script_space_size * SIZEOF(jpeg_scan_info));
}
scanptr = cinfo->script_space;
cinfo->scan_info = scanptr;
cinfo->num_scans = nscans;
if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) {
/* Custom script for YCbCr color images. */
/* Initial DC scan */
scanptr = fill_dc_scans(scanptr, ncomps, 0, 1);
/* Initial AC scan: get some luma data out in a hurry */
scanptr = fill_a_scan(scanptr, 0, 1, 5, 0, 2);
/* Chroma data is too small to be worth expending many scans on */
scanptr = fill_a_scan(scanptr, 2, 1, 63, 0, 1);
scanptr = fill_a_scan(scanptr, 1, 1, 63, 0, 1);
/* Complete spectral selection for luma AC */
scanptr = fill_a_scan(scanptr, 0, 6, 63, 0, 2);
/* Refine next bit of luma AC */
scanptr = fill_a_scan(scanptr, 0, 1, 63, 2, 1);
/* Finish DC successive approximation */
scanptr = fill_dc_scans(scanptr, ncomps, 1, 0);
/* Finish AC successive approximation */
scanptr = fill_a_scan(scanptr, 2, 1, 63, 1, 0);
scanptr = fill_a_scan(scanptr, 1, 1, 63, 1, 0);
/* Luma bottom bit comes last since it's usually largest scan */
scanptr = fill_a_scan(scanptr, 0, 1, 63, 1, 0);
} else {
/* All-purpose script for other color spaces. */
/* Successive approximation first pass */
scanptr = fill_dc_scans(scanptr, ncomps, 0, 1);
scanptr = fill_scans(scanptr, ncomps, 1, 5, 0, 2);
scanptr = fill_scans(scanptr, ncomps, 6, 63, 0, 2);
/* Successive approximation second pass */
scanptr = fill_scans(scanptr, ncomps, 1, 63, 2, 1);
/* Successive approximation final pass */
scanptr = fill_dc_scans(scanptr, ncomps, 1, 0);
scanptr = fill_scans(scanptr, ncomps, 1, 63, 1, 0);
}
}
#endif /* C_PROGRESSIVE_SUPPORTED */
libs/jpeg-9/jcprepct.c
-358
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/*
* jcprepct.c
*
* Copyright (C) 1994-1996, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains the compression preprocessing controller.
* This controller manages the color conversion, downsampling,
* and edge expansion steps.
*
* Most of the complexity here is associated with buffering input rows
* as required by the downsampler. See the comments at the head of
* jcsample.c for the downsampler's needs.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* At present, jcsample.c can request context rows only for smoothing.
* In the future, we might also need context rows for CCIR601 sampling
* or other more-complex downsampling procedures. The code to support
* context rows should be compiled only if needed.
*/
#ifdef INPUT_SMOOTHING_SUPPORTED
#define CONTEXT_ROWS_SUPPORTED
#endif
/*
* For the simple (no-context-row) case, we just need to buffer one
* row group's worth of pixels for the downsampling step. At the bottom of
* the image, we pad to a full row group by replicating the last pixel row.
* The downsampler's last output row is then replicated if needed to pad
* out to a full iMCU row.
*
* When providing context rows, we must buffer three row groups' worth of
* pixels. Three row groups are physically allocated, but the row pointer
* arrays are made five row groups high, with the extra pointers above and
* below "wrapping around" to point to the last and first real row groups.
* This allows the downsampler to access the proper context rows.
* At the top and bottom of the image, we create dummy context rows by
* copying the first or last real pixel row. This copying could be avoided
* by pointer hacking as is done in jdmainct.c, but it doesn't seem worth the
* trouble on the compression side.
*/
/* Private buffer controller object */
typedef struct {
struct jpeg_c_prep_controller pub; /* public fields */
/* Downsampling input buffer. This buffer holds color-converted data
* until we have enough to do a downsample step.
*/
JSAMPARRAY color_buf[MAX_COMPONENTS];
JDIMENSION rows_to_go; /* counts rows remaining in source image */
int next_buf_row; /* index of next row to store in color_buf */
#ifdef CONTEXT_ROWS_SUPPORTED /* only needed for context case */
int this_row_group; /* starting row index of group to process */
int next_buf_stop; /* downsample when we reach this index */
#endif
} my_prep_controller;
typedef my_prep_controller * my_prep_ptr;
/*
* Initialize for a processing pass.
*/
METHODDEF(void)
start_pass_prep (j_compress_ptr cinfo, J_BUF_MODE pass_mode)
{
my_prep_ptr prep = (my_prep_ptr) cinfo->prep;
if (pass_mode != JBUF_PASS_THRU)
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
/* Initialize total-height counter for detecting bottom of image */
prep->rows_to_go = cinfo->image_height;
/* Mark the conversion buffer empty */
prep->next_buf_row = 0;
#ifdef CONTEXT_ROWS_SUPPORTED
/* Preset additional state variables for context mode.
* These aren't used in non-context mode, so we needn't test which mode.
*/
prep->this_row_group = 0;
/* Set next_buf_stop to stop after two row groups have been read in. */
prep->next_buf_stop = 2 * cinfo->max_v_samp_factor;
#endif
}
/*
* Expand an image vertically from height input_rows to height output_rows,
* by duplicating the bottom row.
*/
LOCAL(void)
expand_bottom_edge (JSAMPARRAY image_data, JDIMENSION num_cols,
int input_rows, int output_rows)
{
register int row;
for (row = input_rows; row < output_rows; row++) {
jcopy_sample_rows(image_data, input_rows-1, image_data, row,
1, num_cols);
}
}
/*
* Process some data in the simple no-context case.
*
* Preprocessor output data is counted in "row groups". A row group
* is defined to be v_samp_factor sample rows of each component.
* Downsampling will produce this much data from each max_v_samp_factor
* input rows.
*/
METHODDEF(void)
pre_process_data (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,
JDIMENSION in_rows_avail,
JSAMPIMAGE output_buf, JDIMENSION *out_row_group_ctr,
JDIMENSION out_row_groups_avail)
{
my_prep_ptr prep = (my_prep_ptr) cinfo->prep;
int numrows, ci;
JDIMENSION inrows;
jpeg_component_info * compptr;
while (*in_row_ctr < in_rows_avail &&
*out_row_group_ctr < out_row_groups_avail) {
/* Do color conversion to fill the conversion buffer. */
inrows = in_rows_avail - *in_row_ctr;
numrows = cinfo->max_v_samp_factor - prep->next_buf_row;
numrows = (int) MIN((JDIMENSION) numrows, inrows);
(*cinfo->cconvert->color_convert) (cinfo, input_buf + *in_row_ctr,
prep->color_buf,
(JDIMENSION) prep->next_buf_row,
numrows);
*in_row_ctr += numrows;
prep->next_buf_row += numrows;
prep->rows_to_go -= numrows;
/* If at bottom of image, pad to fill the conversion buffer. */
if (prep->rows_to_go == 0 &&
prep->next_buf_row < cinfo->max_v_samp_factor) {
for (ci = 0; ci < cinfo->num_components; ci++) {
expand_bottom_edge(prep->color_buf[ci], cinfo->image_width,
prep->next_buf_row, cinfo->max_v_samp_factor);
}
prep->next_buf_row = cinfo->max_v_samp_factor;
}
/* If we've filled the conversion buffer, empty it. */
if (prep->next_buf_row == cinfo->max_v_samp_factor) {
(*cinfo->downsample->downsample) (cinfo,
prep->color_buf, (JDIMENSION) 0,
output_buf, *out_row_group_ctr);
prep->next_buf_row = 0;
(*out_row_group_ctr)++;
}
/* If at bottom of image, pad the output to a full iMCU height.
* Note we assume the caller is providing a one-iMCU-height output buffer!
*/
if (prep->rows_to_go == 0 &&
*out_row_group_ctr < out_row_groups_avail) {
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
numrows = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) /
cinfo->min_DCT_v_scaled_size;
expand_bottom_edge(output_buf[ci],
compptr->width_in_blocks * compptr->DCT_h_scaled_size,
(int) (*out_row_group_ctr * numrows),
(int) (out_row_groups_avail * numrows));
}
*out_row_group_ctr = out_row_groups_avail;
break; /* can exit outer loop without test */
}
}
}
#ifdef CONTEXT_ROWS_SUPPORTED
/*
* Process some data in the context case.
*/
METHODDEF(void)
pre_process_context (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,
JDIMENSION in_rows_avail,
JSAMPIMAGE output_buf, JDIMENSION *out_row_group_ctr,
JDIMENSION out_row_groups_avail)
{
my_prep_ptr prep = (my_prep_ptr) cinfo->prep;
int numrows, ci;
int buf_height = cinfo->max_v_samp_factor * 3;
JDIMENSION inrows;
while (*out_row_group_ctr < out_row_groups_avail) {
if (*in_row_ctr < in_rows_avail) {
/* Do color conversion to fill the conversion buffer. */
inrows = in_rows_avail - *in_row_ctr;
numrows = prep->next_buf_stop - prep->next_buf_row;
numrows = (int) MIN((JDIMENSION) numrows, inrows);
(*cinfo->cconvert->color_convert) (cinfo, input_buf + *in_row_ctr,
prep->color_buf,
(JDIMENSION) prep->next_buf_row,
numrows);
/* Pad at top of image, if first time through */
if (prep->rows_to_go == cinfo->image_height) {
for (ci = 0; ci < cinfo->num_components; ci++) {
int row;
for (row = 1; row <= cinfo->max_v_samp_factor; row++) {
jcopy_sample_rows(prep->color_buf[ci], 0,
prep->color_buf[ci], -row,
1, cinfo->image_width);
}
}
}
*in_row_ctr += numrows;
prep->next_buf_row += numrows;
prep->rows_to_go -= numrows;
} else {
/* Return for more data, unless we are at the bottom of the image. */
if (prep->rows_to_go != 0)
break;
/* When at bottom of image, pad to fill the conversion buffer. */
if (prep->next_buf_row < prep->next_buf_stop) {
for (ci = 0; ci < cinfo->num_components; ci++) {
expand_bottom_edge(prep->color_buf[ci], cinfo->image_width,
prep->next_buf_row, prep->next_buf_stop);
}
prep->next_buf_row = prep->next_buf_stop;
}
}
/* If we've gotten enough data, downsample a row group. */
if (prep->next_buf_row == prep->next_buf_stop) {
(*cinfo->downsample->downsample) (cinfo,
prep->color_buf,
(JDIMENSION) prep->this_row_group,
output_buf, *out_row_group_ctr);
(*out_row_group_ctr)++;
/* Advance pointers with wraparound as necessary. */
prep->this_row_group += cinfo->max_v_samp_factor;
if (prep->this_row_group >= buf_height)
prep->this_row_group = 0;
if (prep->next_buf_row >= buf_height)
prep->next_buf_row = 0;
prep->next_buf_stop = prep->next_buf_row + cinfo->max_v_samp_factor;
}
}
}
/*
* Create the wrapped-around downsampling input buffer needed for context mode.
*/
LOCAL(void)
create_context_buffer (j_compress_ptr cinfo)
{
my_prep_ptr prep = (my_prep_ptr) cinfo->prep;
int rgroup_height = cinfo->max_v_samp_factor;
int ci, i;
jpeg_component_info * compptr;
JSAMPARRAY true_buffer, fake_buffer;
/* Grab enough space for fake row pointers for all the components;
* we need five row groups' worth of pointers for each component.
*/
fake_buffer = (JSAMPARRAY)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
(cinfo->num_components * 5 * rgroup_height) *
SIZEOF(JSAMPROW));
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
/* Allocate the actual buffer space (3 row groups) for this component.
* We make the buffer wide enough to allow the downsampler to edge-expand
* horizontally within the buffer, if it so chooses.
*/
true_buffer = (*cinfo->mem->alloc_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
(JDIMENSION) (((long) compptr->width_in_blocks *
cinfo->min_DCT_h_scaled_size *
cinfo->max_h_samp_factor) / compptr->h_samp_factor),
(JDIMENSION) (3 * rgroup_height));
/* Copy true buffer row pointers into the middle of the fake row array */
MEMCOPY(fake_buffer + rgroup_height, true_buffer,
3 * rgroup_height * SIZEOF(JSAMPROW));
/* Fill in the above and below wraparound pointers */
for (i = 0; i < rgroup_height; i++) {
fake_buffer[i] = true_buffer[2 * rgroup_height + i];
fake_buffer[4 * rgroup_height + i] = true_buffer[i];
}
prep->color_buf[ci] = fake_buffer + rgroup_height;
fake_buffer += 5 * rgroup_height; /* point to space for next component */
}
}
#endif /* CONTEXT_ROWS_SUPPORTED */
/*
* Initialize preprocessing controller.
*/
GLOBAL(void)
jinit_c_prep_controller (j_compress_ptr cinfo, boolean need_full_buffer)
{
my_prep_ptr prep;
int ci;
jpeg_component_info * compptr;
if (need_full_buffer) /* safety check */
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
prep = (my_prep_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_prep_controller));
cinfo->prep = (struct jpeg_c_prep_controller *) prep;
prep->pub.start_pass = start_pass_prep;
/* Allocate the color conversion buffer.
* We make the buffer wide enough to allow the downsampler to edge-expand
* horizontally within the buffer, if it so chooses.
*/
if (cinfo->downsample->need_context_rows) {
/* Set up to provide context rows */
#ifdef CONTEXT_ROWS_SUPPORTED
prep->pub.pre_process_data = pre_process_context;
create_context_buffer(cinfo);
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
} else {
/* No context, just make it tall enough for one row group */
prep->pub.pre_process_data = pre_process_data;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
prep->color_buf[ci] = (*cinfo->mem->alloc_sarray)
((j_common_ptr) cinfo, JPOOL_IMAGE,
(JDIMENSION) (((long) compptr->width_in_blocks *
cinfo->min_DCT_h_scaled_size *
cinfo->max_h_samp_factor) / compptr->h_samp_factor),
(JDIMENSION) cinfo->max_v_samp_factor);
}
}
}
libs/jpeg-9/jcsample.c
-545
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@@ -1,545 +0,0 @@
/*
* jcsample.c
*
* Copyright (C) 1991-1996, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains downsampling routines.
*
* Downsampling input data is counted in "row groups". A row group
* is defined to be max_v_samp_factor pixel rows of each component,
* from which the downsampler produces v_samp_factor sample rows.
* A single row group is processed in each call to the downsampler module.
*
* The downsampler is responsible for edge-expansion of its output data
* to fill an integral number of DCT blocks horizontally. The source buffer
* may be modified if it is helpful for this purpose (the source buffer is
* allocated wide enough to correspond to the desired output width).
* The caller (the prep controller) is responsible for vertical padding.
*
* The downsampler may request "context rows" by setting need_context_rows
* during startup. In this case, the input arrays will contain at least
* one row group's worth of pixels above and below the passed-in data;
* the caller will create dummy rows at image top and bottom by replicating
* the first or last real pixel row.
*
* An excellent reference for image resampling is
* Digital Image Warping, George Wolberg, 1990.
* Pub. by IEEE Computer Society Press, Los Alamitos, CA. ISBN 0-8186-8944-7.
*
* The downsampling algorithm used here is a simple average of the source
* pixels covered by the output pixel. The hi-falutin sampling literature
* refers to this as a "box filter". In general the characteristics of a box
* filter are not very good, but for the specific cases we normally use (1:1
* and 2:1 ratios) the box is equivalent to a "triangle filter" which is not
* nearly so bad. If you intend to use other sampling ratios, you'd be well
* advised to improve this code.
*
* A simple input-smoothing capability is provided. This is mainly intended
* for cleaning up color-dithered GIF input files (if you find it inadequate,
* we suggest using an external filtering program such as pnmconvol). When
* enabled, each input pixel P is replaced by a weighted sum of itself and its
* eight neighbors. P's weight is 1-8*SF and each neighbor's weight is SF,
* where SF = (smoothing_factor / 1024).
* Currently, smoothing is only supported for 2h2v sampling factors.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* Pointer to routine to downsample a single component */
typedef JMETHOD(void, downsample1_ptr,
(j_compress_ptr cinfo, jpeg_component_info * compptr,
JSAMPARRAY input_data, JSAMPARRAY output_data));
/* Private subobject */
typedef struct {
struct jpeg_downsampler pub; /* public fields */
/* Downsampling method pointers, one per component */
downsample1_ptr methods[MAX_COMPONENTS];
/* Height of an output row group for each component. */
int rowgroup_height[MAX_COMPONENTS];
/* These arrays save pixel expansion factors so that int_downsample need not
* recompute them each time. They are unused for other downsampling methods.
*/
UINT8 h_expand[MAX_COMPONENTS];
UINT8 v_expand[MAX_COMPONENTS];
} my_downsampler;
typedef my_downsampler * my_downsample_ptr;
/*
* Initialize for a downsampling pass.
*/
METHODDEF(void)
start_pass_downsample (j_compress_ptr cinfo)
{
/* no work for now */
}
/*
* Expand a component horizontally from width input_cols to width output_cols,
* by duplicating the rightmost samples.
*/
LOCAL(void)
expand_right_edge (JSAMPARRAY image_data, int num_rows,
JDIMENSION input_cols, JDIMENSION output_cols)
{
register JSAMPROW ptr;
register JSAMPLE pixval;
register int count;
int row;
int numcols = (int) (output_cols - input_cols);
if (numcols > 0) {
for (row = 0; row < num_rows; row++) {
ptr = image_data[row] + input_cols;
pixval = ptr[-1]; /* don't need GETJSAMPLE() here */
for (count = numcols; count > 0; count--)
*ptr++ = pixval;
}
}
}
/*
* Do downsampling for a whole row group (all components).
*
* In this version we simply downsample each component independently.
*/
METHODDEF(void)
sep_downsample (j_compress_ptr cinfo,
JSAMPIMAGE input_buf, JDIMENSION in_row_index,
JSAMPIMAGE output_buf, JDIMENSION out_row_group_index)
{
my_downsample_ptr downsample = (my_downsample_ptr) cinfo->downsample;
int ci;
jpeg_component_info * compptr;
JSAMPARRAY in_ptr, out_ptr;
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
in_ptr = input_buf[ci] + in_row_index;
out_ptr = output_buf[ci] +
(out_row_group_index * downsample->rowgroup_height[ci]);
(*downsample->methods[ci]) (cinfo, compptr, in_ptr, out_ptr);
}
}
/*
* Downsample pixel values of a single component.
* One row group is processed per call.
* This version handles arbitrary integral sampling ratios, without smoothing.
* Note that this version is not actually used for customary sampling ratios.
*/
METHODDEF(void)
int_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr,
JSAMPARRAY input_data, JSAMPARRAY output_data)
{
my_downsample_ptr downsample = (my_downsample_ptr) cinfo->downsample;
int inrow, outrow, h_expand, v_expand, numpix, numpix2, h, v;
JDIMENSION outcol, outcol_h; /* outcol_h == outcol*h_expand */
JDIMENSION output_cols = compptr->width_in_blocks * compptr->DCT_h_scaled_size;
JSAMPROW inptr, outptr;
INT32 outvalue;
h_expand = downsample->h_expand[compptr->component_index];
v_expand = downsample->v_expand[compptr->component_index];
numpix = h_expand * v_expand;
numpix2 = numpix/2;
/* Expand input data enough to let all the output samples be generated
* by the standard loop. Special-casing padded output would be more
* efficient.
*/
expand_right_edge(input_data, cinfo->max_v_samp_factor,
cinfo->image_width, output_cols * h_expand);
inrow = outrow = 0;
while (inrow < cinfo->max_v_samp_factor) {
outptr = output_data[outrow];
for (outcol = 0, outcol_h = 0; outcol < output_cols;
outcol++, outcol_h += h_expand) {
outvalue = 0;
for (v = 0; v < v_expand; v++) {
inptr = input_data[inrow+v] + outcol_h;
for (h = 0; h < h_expand; h++) {
outvalue += (INT32) GETJSAMPLE(*inptr++);
}
}
*outptr++ = (JSAMPLE) ((outvalue + numpix2) / numpix);
}
inrow += v_expand;
outrow++;
}
}
/*
* Downsample pixel values of a single component.
* This version handles the special case of a full-size component,
* without smoothing.
*/
METHODDEF(void)
fullsize_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr,
JSAMPARRAY input_data, JSAMPARRAY output_data)
{
/* Copy the data */
jcopy_sample_rows(input_data, 0, output_data, 0,
cinfo->max_v_samp_factor, cinfo->image_width);
/* Edge-expand */
expand_right_edge(output_data, cinfo->max_v_samp_factor, cinfo->image_width,
compptr->width_in_blocks * compptr->DCT_h_scaled_size);
}
/*
* Downsample pixel values of a single component.
* This version handles the common case of 2:1 horizontal and 1:1 vertical,
* without smoothing.
*
* A note about the "bias" calculations: when rounding fractional values to
* integer, we do not want to always round 0.5 up to the next integer.
* If we did that, we'd introduce a noticeable bias towards larger values.
* Instead, this code is arranged so that 0.5 will be rounded up or down at
* alternate pixel locations (a simple ordered dither pattern).
*/
METHODDEF(void)
h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr,
JSAMPARRAY input_data, JSAMPARRAY output_data)
{
int inrow;
JDIMENSION outcol;
JDIMENSION output_cols = compptr->width_in_blocks * compptr->DCT_h_scaled_size;
register JSAMPROW inptr, outptr;
register int bias;
/* Expand input data enough to let all the output samples be generated
* by the standard loop. Special-casing padded output would be more
* efficient.
*/
expand_right_edge(input_data, cinfo->max_v_samp_factor,
cinfo->image_width, output_cols * 2);
for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++) {
outptr = output_data[inrow];
inptr = input_data[inrow];
bias = 0; /* bias = 0,1,0,1,... for successive samples */
for (outcol = 0; outcol < output_cols; outcol++) {
*outptr++ = (JSAMPLE) ((GETJSAMPLE(*inptr) + GETJSAMPLE(inptr[1])
+ bias) >> 1);
bias ^= 1; /* 0=>1, 1=>0 */
inptr += 2;
}
}
}
/*
* Downsample pixel values of a single component.
* This version handles the standard case of 2:1 horizontal and 2:1 vertical,
* without smoothing.
*/
METHODDEF(void)
h2v2_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr,
JSAMPARRAY input_data, JSAMPARRAY output_data)
{
int inrow, outrow;
JDIMENSION outcol;
JDIMENSION output_cols = compptr->width_in_blocks * compptr->DCT_h_scaled_size;
register JSAMPROW inptr0, inptr1, outptr;
register int bias;
/* Expand input data enough to let all the output samples be generated
* by the standard loop. Special-casing padded output would be more
* efficient.
*/
expand_right_edge(input_data, cinfo->max_v_samp_factor,
cinfo->image_width, output_cols * 2);
inrow = outrow = 0;
while (inrow < cinfo->max_v_samp_factor) {
outptr = output_data[outrow];
inptr0 = input_data[inrow];
inptr1 = input_data[inrow+1];
bias = 1; /* bias = 1,2,1,2,... for successive samples */
for (outcol = 0; outcol < output_cols; outcol++) {
*outptr++ = (JSAMPLE) ((GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[1]) +
GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[1])
+ bias) >> 2);
bias ^= 3; /* 1=>2, 2=>1 */
inptr0 += 2; inptr1 += 2;
}
inrow += 2;
outrow++;
}
}
#ifdef INPUT_SMOOTHING_SUPPORTED
/*
* Downsample pixel values of a single component.
* This version handles the standard case of 2:1 horizontal and 2:1 vertical,
* with smoothing. One row of context is required.
*/
METHODDEF(void)
h2v2_smooth_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr,
JSAMPARRAY input_data, JSAMPARRAY output_data)
{
int inrow, outrow;
JDIMENSION colctr;
JDIMENSION output_cols = compptr->width_in_blocks * compptr->DCT_h_scaled_size;
register JSAMPROW inptr0, inptr1, above_ptr, below_ptr, outptr;
INT32 membersum, neighsum, memberscale, neighscale;
/* Expand input data enough to let all the output samples be generated
* by the standard loop. Special-casing padded output would be more
* efficient.
*/
expand_right_edge(input_data - 1, cinfo->max_v_samp_factor + 2,
cinfo->image_width, output_cols * 2);
/* We don't bother to form the individual "smoothed" input pixel values;
* we can directly compute the output which is the average of the four
* smoothed values. Each of the four member pixels contributes a fraction
* (1-8*SF) to its own smoothed image and a fraction SF to each of the three
* other smoothed pixels, therefore a total fraction (1-5*SF)/4 to the final
* output. The four corner-adjacent neighbor pixels contribute a fraction
* SF to just one smoothed pixel, or SF/4 to the final output; while the
* eight edge-adjacent neighbors contribute SF to each of two smoothed
* pixels, or SF/2 overall. In order to use integer arithmetic, these
* factors are scaled by 2^16 = 65536.
* Also recall that SF = smoothing_factor / 1024.
*/
memberscale = 16384 - cinfo->smoothing_factor * 80; /* scaled (1-5*SF)/4 */
neighscale = cinfo->smoothing_factor * 16; /* scaled SF/4 */
inrow = outrow = 0;
while (inrow < cinfo->max_v_samp_factor) {
outptr = output_data[outrow];
inptr0 = input_data[inrow];
inptr1 = input_data[inrow+1];
above_ptr = input_data[inrow-1];
below_ptr = input_data[inrow+2];
/* Special case for first column: pretend column -1 is same as column 0 */
membersum = GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[1]) +
GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[1]);
neighsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(above_ptr[1]) +
GETJSAMPLE(*below_ptr) + GETJSAMPLE(below_ptr[1]) +
GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[2]) +
GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[2]);
neighsum += neighsum;
neighsum += GETJSAMPLE(*above_ptr) + GETJSAMPLE(above_ptr[2]) +
GETJSAMPLE(*below_ptr) + GETJSAMPLE(below_ptr[2]);
membersum = membersum * memberscale + neighsum * neighscale;
*outptr++ = (JSAMPLE) ((membersum + 32768) >> 16);
inptr0 += 2; inptr1 += 2; above_ptr += 2; below_ptr += 2;
for (colctr = output_cols - 2; colctr > 0; colctr--) {
/* sum of pixels directly mapped to this output element */
membersum = GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[1]) +
GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[1]);
/* sum of edge-neighbor pixels */
neighsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(above_ptr[1]) +
GETJSAMPLE(*below_ptr) + GETJSAMPLE(below_ptr[1]) +
GETJSAMPLE(inptr0[-1]) + GETJSAMPLE(inptr0[2]) +
GETJSAMPLE(inptr1[-1]) + GETJSAMPLE(inptr1[2]);
/* The edge-neighbors count twice as much as corner-neighbors */
neighsum += neighsum;
/* Add in the corner-neighbors */
neighsum += GETJSAMPLE(above_ptr[-1]) + GETJSAMPLE(above_ptr[2]) +
GETJSAMPLE(below_ptr[-1]) + GETJSAMPLE(below_ptr[2]);
/* form final output scaled up by 2^16 */
membersum = membersum * memberscale + neighsum * neighscale;
/* round, descale and output it */
*outptr++ = (JSAMPLE) ((membersum + 32768) >> 16);
inptr0 += 2; inptr1 += 2; above_ptr += 2; below_ptr += 2;
}
/* Special case for last column */
membersum = GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[1]) +
GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[1]);
neighsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(above_ptr[1]) +
GETJSAMPLE(*below_ptr) + GETJSAMPLE(below_ptr[1]) +
GETJSAMPLE(inptr0[-1]) + GETJSAMPLE(inptr0[1]) +
GETJSAMPLE(inptr1[-1]) + GETJSAMPLE(inptr1[1]);
neighsum += neighsum;
neighsum += GETJSAMPLE(above_ptr[-1]) + GETJSAMPLE(above_ptr[1]) +
GETJSAMPLE(below_ptr[-1]) + GETJSAMPLE(below_ptr[1]);
membersum = membersum * memberscale + neighsum * neighscale;
*outptr = (JSAMPLE) ((membersum + 32768) >> 16);
inrow += 2;
outrow++;
}
}
/*
* Downsample pixel values of a single component.
* This version handles the special case of a full-size component,
* with smoothing. One row of context is required.
*/
METHODDEF(void)
fullsize_smooth_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr,
JSAMPARRAY input_data, JSAMPARRAY output_data)
{
int inrow;
JDIMENSION colctr;
JDIMENSION output_cols = compptr->width_in_blocks * compptr->DCT_h_scaled_size;
register JSAMPROW inptr, above_ptr, below_ptr, outptr;
INT32 membersum, neighsum, memberscale, neighscale;
int colsum, lastcolsum, nextcolsum;
/* Expand input data enough to let all the output samples be generated
* by the standard loop. Special-casing padded output would be more
* efficient.
*/
expand_right_edge(input_data - 1, cinfo->max_v_samp_factor + 2,
cinfo->image_width, output_cols);
/* Each of the eight neighbor pixels contributes a fraction SF to the
* smoothed pixel, while the main pixel contributes (1-8*SF). In order
* to use integer arithmetic, these factors are multiplied by 2^16 = 65536.
* Also recall that SF = smoothing_factor / 1024.
*/
memberscale = 65536L - cinfo->smoothing_factor * 512L; /* scaled 1-8*SF */
neighscale = cinfo->smoothing_factor * 64; /* scaled SF */
for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++) {
outptr = output_data[inrow];
inptr = input_data[inrow];
above_ptr = input_data[inrow-1];
below_ptr = input_data[inrow+1];
/* Special case for first column */
colsum = GETJSAMPLE(*above_ptr++) + GETJSAMPLE(*below_ptr++) +
GETJSAMPLE(*inptr);
membersum = GETJSAMPLE(*inptr++);
nextcolsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(*below_ptr) +
GETJSAMPLE(*inptr);
neighsum = colsum + (colsum - membersum) + nextcolsum;
membersum = membersum * memberscale + neighsum * neighscale;
*outptr++ = (JSAMPLE) ((membersum + 32768) >> 16);
lastcolsum = colsum; colsum = nextcolsum;
for (colctr = output_cols - 2; colctr > 0; colctr--) {
membersum = GETJSAMPLE(*inptr++);
above_ptr++; below_ptr++;
nextcolsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(*below_ptr) +
GETJSAMPLE(*inptr);
neighsum = lastcolsum + (colsum - membersum) + nextcolsum;
membersum = membersum * memberscale + neighsum * neighscale;
*outptr++ = (JSAMPLE) ((membersum + 32768) >> 16);
lastcolsum = colsum; colsum = nextcolsum;
}
/* Special case for last column */
membersum = GETJSAMPLE(*inptr);
neighsum = lastcolsum + (colsum - membersum) + colsum;
membersum = membersum * memberscale + neighsum * neighscale;
*outptr = (JSAMPLE) ((membersum + 32768) >> 16);
}
}
#endif /* INPUT_SMOOTHING_SUPPORTED */
/*
* Module initialization routine for downsampling.
* Note that we must select a routine for each component.
*/
GLOBAL(void)
jinit_downsampler (j_compress_ptr cinfo)
{
my_downsample_ptr downsample;
int ci;
jpeg_component_info * compptr;
boolean smoothok = TRUE;
int h_in_group, v_in_group, h_out_group, v_out_group;
downsample = (my_downsample_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_downsampler));
cinfo->downsample = (struct jpeg_downsampler *) downsample;
downsample->pub.start_pass = start_pass_downsample;
downsample->pub.downsample = sep_downsample;
downsample->pub.need_context_rows = FALSE;
if (cinfo->CCIR601_sampling)
ERREXIT(cinfo, JERR_CCIR601_NOTIMPL);
/* Verify we can handle the sampling factors, and set up method pointers */
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
/* Compute size of an "output group" for DCT scaling. This many samples
* are to be converted from max_h_samp_factor * max_v_samp_factor pixels.
*/
h_out_group = (compptr->h_samp_factor * compptr->DCT_h_scaled_size) /
cinfo->min_DCT_h_scaled_size;
v_out_group = (compptr->v_samp_factor * compptr->DCT_v_scaled_size) /
cinfo->min_DCT_v_scaled_size;
h_in_group = cinfo->max_h_samp_factor;
v_in_group = cinfo->max_v_samp_factor;
downsample->rowgroup_height[ci] = v_out_group; /* save for use later */
if (h_in_group == h_out_group && v_in_group == v_out_group) {
#ifdef INPUT_SMOOTHING_SUPPORTED
if (cinfo->smoothing_factor) {
downsample->methods[ci] = fullsize_smooth_downsample;
downsample->pub.need_context_rows = TRUE;
} else
#endif
downsample->methods[ci] = fullsize_downsample;
} else if (h_in_group == h_out_group * 2 &&
v_in_group == v_out_group) {
smoothok = FALSE;
downsample->methods[ci] = h2v1_downsample;
} else if (h_in_group == h_out_group * 2 &&
v_in_group == v_out_group * 2) {
#ifdef INPUT_SMOOTHING_SUPPORTED
if (cinfo->smoothing_factor) {
downsample->methods[ci] = h2v2_smooth_downsample;
downsample->pub.need_context_rows = TRUE;
} else
#endif
downsample->methods[ci] = h2v2_downsample;
} else if ((h_in_group % h_out_group) == 0 &&
(v_in_group % v_out_group) == 0) {
smoothok = FALSE;
downsample->methods[ci] = int_downsample;
downsample->h_expand[ci] = (UINT8) (h_in_group / h_out_group);
downsample->v_expand[ci] = (UINT8) (v_in_group / v_out_group);
} else
ERREXIT(cinfo, JERR_FRACT_SAMPLE_NOTIMPL);
}
#ifdef INPUT_SMOOTHING_SUPPORTED
if (cinfo->smoothing_factor && !smoothok)
TRACEMS(cinfo, 0, JTRC_SMOOTH_NOTIMPL);
#endif
}
libs/jpeg-9/jctrans.c
-385
View File
@@ -1,385 +0,0 @@
/*
* jctrans.c
*
* Copyright (C) 1995-1998, Thomas G. Lane.
* Modified 2000-2012 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains library routines for transcoding compression,
* that is, writing raw DCT coefficient arrays to an output JPEG file.
* The routines in jcapimin.c will also be needed by a transcoder.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* Forward declarations */
LOCAL(void) transencode_master_selection
JPP((j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays));
LOCAL(void) transencode_coef_controller
JPP((j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays));
/*
* Compression initialization for writing raw-coefficient data.
* Before calling this, all parameters and a data destination must be set up.
* Call jpeg_finish_compress() to actually write the data.
*
* The number of passed virtual arrays must match cinfo->num_components.
* Note that the virtual arrays need not be filled or even realized at
* the time write_coefficients is called; indeed, if the virtual arrays
* were requested from this compression object's memory manager, they
* typically will be realized during this routine and filled afterwards.
*/
GLOBAL(void)
jpeg_write_coefficients (j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays)
{
if (cinfo->global_state != CSTATE_START)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* Mark all tables to be written */
jpeg_suppress_tables(cinfo, FALSE);
/* (Re)initialize error mgr and destination modules */
(*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);
(*cinfo->dest->init_destination) (cinfo);
/* Perform master selection of active modules */
transencode_master_selection(cinfo, coef_arrays);
/* Wait for jpeg_finish_compress() call */
cinfo->next_scanline = 0; /* so jpeg_write_marker works */
cinfo->global_state = CSTATE_WRCOEFS;
}
/*
* Initialize the compression object with default parameters,
* then copy from the source object all parameters needed for lossless
* transcoding. Parameters that can be varied without loss (such as
* scan script and Huffman optimization) are left in their default states.
*/
GLOBAL(void)
jpeg_copy_critical_parameters (j_decompress_ptr srcinfo,
j_compress_ptr dstinfo)
{
JQUANT_TBL ** qtblptr;
jpeg_component_info *incomp, *outcomp;
JQUANT_TBL *c_quant, *slot_quant;
int tblno, ci, coefi;
/* Safety check to ensure start_compress not called yet. */
if (dstinfo->global_state != CSTATE_START)
ERREXIT1(dstinfo, JERR_BAD_STATE, dstinfo->global_state);
/* Copy fundamental image dimensions */
dstinfo->image_width = srcinfo->image_width;
dstinfo->image_height = srcinfo->image_height;
dstinfo->input_components = srcinfo->num_components;
dstinfo->in_color_space = srcinfo->jpeg_color_space;
dstinfo->jpeg_width = srcinfo->output_width;
dstinfo->jpeg_height = srcinfo->output_height;
dstinfo->min_DCT_h_scaled_size = srcinfo->min_DCT_h_scaled_size;
dstinfo->min_DCT_v_scaled_size = srcinfo->min_DCT_v_scaled_size;
/* Initialize all parameters to default values */
jpeg_set_defaults(dstinfo);
/* jpeg_set_defaults may choose wrong colorspace, eg YCbCr if input is RGB.
* Fix it to get the right header markers for the image colorspace.
* Note: Entropy table assignment in jpeg_set_colorspace depends
* on color_transform.
*/
dstinfo->color_transform = srcinfo->color_transform;
jpeg_set_colorspace(dstinfo, srcinfo->jpeg_color_space);
dstinfo->data_precision = srcinfo->data_precision;
dstinfo->CCIR601_sampling = srcinfo->CCIR601_sampling;
/* Copy the source's quantization tables. */
for (tblno = 0; tblno < NUM_QUANT_TBLS; tblno++) {
if (srcinfo->quant_tbl_ptrs[tblno] != NULL) {
qtblptr = & dstinfo->quant_tbl_ptrs[tblno];
if (*qtblptr == NULL)
*qtblptr = jpeg_alloc_quant_table((j_common_ptr) dstinfo);
MEMCOPY((*qtblptr)->quantval,
srcinfo->quant_tbl_ptrs[tblno]->quantval,
SIZEOF((*qtblptr)->quantval));
(*qtblptr)->sent_table = FALSE;
}
}
/* Copy the source's per-component info.
* Note we assume jpeg_set_defaults has allocated the dest comp_info array.
*/
dstinfo->num_components = srcinfo->num_components;
if (dstinfo->num_components < 1 || dstinfo->num_components > MAX_COMPONENTS)
ERREXIT2(dstinfo, JERR_COMPONENT_COUNT, dstinfo->num_components,
MAX_COMPONENTS);
for (ci = 0, incomp = srcinfo->comp_info, outcomp = dstinfo->comp_info;
ci < dstinfo->num_components; ci++, incomp++, outcomp++) {
outcomp->component_id = incomp->component_id;
outcomp->h_samp_factor = incomp->h_samp_factor;
outcomp->v_samp_factor = incomp->v_samp_factor;
outcomp->quant_tbl_no = incomp->quant_tbl_no;
/* Make sure saved quantization table for component matches the qtable
* slot. If not, the input file re-used this qtable slot.
* IJG encoder currently cannot duplicate this.
*/
tblno = outcomp->quant_tbl_no;
if (tblno < 0 || tblno >= NUM_QUANT_TBLS ||
srcinfo->quant_tbl_ptrs[tblno] == NULL)
ERREXIT1(dstinfo, JERR_NO_QUANT_TABLE, tblno);
slot_quant = srcinfo->quant_tbl_ptrs[tblno];
c_quant = incomp->quant_table;
if (c_quant != NULL) {
for (coefi = 0; coefi < DCTSIZE2; coefi++) {
if (c_quant->quantval[coefi] != slot_quant->quantval[coefi])
ERREXIT1(dstinfo, JERR_MISMATCHED_QUANT_TABLE, tblno);
}
}
/* Note: we do not copy the source's entropy table assignments;
* instead we rely on jpeg_set_colorspace to have made a suitable choice.
*/
}
/* Also copy JFIF version and resolution information, if available.
* Strictly speaking this isn't "critical" info, but it's nearly
* always appropriate to copy it if available. In particular,
* if the application chooses to copy JFIF 1.02 extension markers from
* the source file, we need to copy the version to make sure we don't
* emit a file that has 1.02 extensions but a claimed version of 1.01.
* We will *not*, however, copy version info from mislabeled "2.01" files.
*/
if (srcinfo->saw_JFIF_marker) {
if (srcinfo->JFIF_major_version == 1) {
dstinfo->JFIF_major_version = srcinfo->JFIF_major_version;
dstinfo->JFIF_minor_version = srcinfo->JFIF_minor_version;
}
dstinfo->density_unit = srcinfo->density_unit;
dstinfo->X_density = srcinfo->X_density;
dstinfo->Y_density = srcinfo->Y_density;
}
}
/*
* Master selection of compression modules for transcoding.
* This substitutes for jcinit.c's initialization of the full compressor.
*/
LOCAL(void)
transencode_master_selection (j_compress_ptr cinfo,
jvirt_barray_ptr * coef_arrays)
{
/* Initialize master control (includes parameter checking/processing) */
jinit_c_master_control(cinfo, TRUE /* transcode only */);
/* Entropy encoding: either Huffman or arithmetic coding. */
if (cinfo->arith_code)
jinit_arith_encoder(cinfo);
else {
jinit_huff_encoder(cinfo);
}
/* We need a special coefficient buffer controller. */
transencode_coef_controller(cinfo, coef_arrays);
jinit_marker_writer(cinfo);
/* We can now tell the memory manager to allocate virtual arrays. */
(*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);
/* Write the datastream header (SOI, JFIF) immediately.
* Frame and scan headers are postponed till later.
* This lets application insert special markers after the SOI.
*/
(*cinfo->marker->write_file_header) (cinfo);
}
/*
* The rest of this file is a special implementation of the coefficient
* buffer controller. This is similar to jccoefct.c, but it handles only
* output from presupplied virtual arrays. Furthermore, we generate any
* dummy padding blocks on-the-fly rather than expecting them to be present
* in the arrays.
*/
/* Private buffer controller object */
typedef struct {
struct jpeg_c_coef_controller pub; /* public fields */
JDIMENSION iMCU_row_num; /* iMCU row # within image */
JDIMENSION mcu_ctr; /* counts MCUs processed in current row */
int MCU_vert_offset; /* counts MCU rows within iMCU row */
int MCU_rows_per_iMCU_row; /* number of such rows needed */
/* Virtual block array for each component. */
jvirt_barray_ptr * whole_image;
/* Workspace for constructing dummy blocks at right/bottom edges. */
JBLOCKROW dummy_buffer[C_MAX_BLOCKS_IN_MCU];
} my_coef_controller;
typedef my_coef_controller * my_coef_ptr;
LOCAL(void)
start_iMCU_row (j_compress_ptr cinfo)
/* Reset within-iMCU-row counters for a new row */
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
/* In an interleaved scan, an MCU row is the same as an iMCU row.
* In a noninterleaved scan, an iMCU row has v_samp_factor MCU rows.
* But at the bottom of the image, process only what's left.
*/
if (cinfo->comps_in_scan > 1) {
coef->MCU_rows_per_iMCU_row = 1;
} else {
if (coef->iMCU_row_num < (cinfo->total_iMCU_rows-1))
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor;
else
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->last_row_height;
}
coef->mcu_ctr = 0;
coef->MCU_vert_offset = 0;
}
/*
* Initialize for a processing pass.
*/
METHODDEF(void)
start_pass_coef (j_compress_ptr cinfo, J_BUF_MODE pass_mode)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
if (pass_mode != JBUF_CRANK_DEST)
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
coef->iMCU_row_num = 0;
start_iMCU_row(cinfo);
}
/*
* Process some data.
* We process the equivalent of one fully interleaved MCU row ("iMCU" row)
* per call, ie, v_samp_factor block rows for each component in the scan.
* The data is obtained from the virtual arrays and fed to the entropy coder.
* Returns TRUE if the iMCU row is completed, FALSE if suspended.
*
* NB: input_buf is ignored; it is likely to be a NULL pointer.
*/
METHODDEF(boolean)
compress_output (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
{
my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
JDIMENSION MCU_col_num; /* index of current MCU within row */
JDIMENSION last_MCU_col = cinfo->MCUs_per_row - 1;
JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;
int blkn, ci, xindex, yindex, yoffset, blockcnt;
JDIMENSION start_col;
JBLOCKARRAY buffer[MAX_COMPS_IN_SCAN];
JBLOCKROW MCU_buffer[C_MAX_BLOCKS_IN_MCU];
JBLOCKROW buffer_ptr;
jpeg_component_info *compptr;
/* Align the virtual buffers for the components used in this scan. */
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
buffer[ci] = (*cinfo->mem->access_virt_barray)
((j_common_ptr) cinfo, coef->whole_image[compptr->component_index],
coef->iMCU_row_num * compptr->v_samp_factor,
(JDIMENSION) compptr->v_samp_factor, FALSE);
}
/* Loop to process one whole iMCU row */
for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row;
yoffset++) {
for (MCU_col_num = coef->mcu_ctr; MCU_col_num < cinfo->MCUs_per_row;
MCU_col_num++) {
/* Construct list of pointers to DCT blocks belonging to this MCU */
blkn = 0; /* index of current DCT block within MCU */
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
start_col = MCU_col_num * compptr->MCU_width;
blockcnt = (MCU_col_num < last_MCU_col) ? compptr->MCU_width
: compptr->last_col_width;
for (yindex = 0; yindex < compptr->MCU_height; yindex++) {
if (coef->iMCU_row_num < last_iMCU_row ||
yindex+yoffset < compptr->last_row_height) {
/* Fill in pointers to real blocks in this row */
buffer_ptr = buffer[ci][yindex+yoffset] + start_col;
for (xindex = 0; xindex < blockcnt; xindex++)
MCU_buffer[blkn++] = buffer_ptr++;
} else {
/* At bottom of image, need a whole row of dummy blocks */
xindex = 0;
}
/* Fill in any dummy blocks needed in this row.
* Dummy blocks are filled in the same way as in jccoefct.c:
* all zeroes in the AC entries, DC entries equal to previous
* block's DC value. The init routine has already zeroed the
* AC entries, so we need only set the DC entries correctly.
*/
for (; xindex < compptr->MCU_width; xindex++) {
MCU_buffer[blkn] = coef->dummy_buffer[blkn];
MCU_buffer[blkn][0][0] = MCU_buffer[blkn-1][0][0];
blkn++;
}
}
}
/* Try to write the MCU. */
if (! (*cinfo->entropy->encode_mcu) (cinfo, MCU_buffer)) {
/* Suspension forced; update state counters and exit */
coef->MCU_vert_offset = yoffset;
coef->mcu_ctr = MCU_col_num;
return FALSE;
}
}
/* Completed an MCU row, but perhaps not an iMCU row */
coef->mcu_ctr = 0;
}
/* Completed the iMCU row, advance counters for next one */
coef->iMCU_row_num++;
start_iMCU_row(cinfo);
return TRUE;
}
/*
* Initialize coefficient buffer controller.
*
* Each passed coefficient array must be the right size for that
* coefficient: width_in_blocks wide and height_in_blocks high,
* with unitheight at least v_samp_factor.
*/
LOCAL(void)
transencode_coef_controller (j_compress_ptr cinfo,
jvirt_barray_ptr * coef_arrays)
{
my_coef_ptr coef;
JBLOCKROW buffer;
int i;
coef = (my_coef_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
SIZEOF(my_coef_controller));
cinfo->coef = &coef->pub;
coef->pub.start_pass = start_pass_coef;
coef->pub.compress_data = compress_output;
/* Save pointer to virtual arrays */
coef->whole_image = coef_arrays;
/* Allocate and pre-zero space for dummy DCT blocks. */
buffer = (JBLOCKROW)
(*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE,
C_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK));
FMEMZERO((void FAR *) buffer, C_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK));
for (i = 0; i < C_MAX_BLOCKS_IN_MCU; i++) {
coef->dummy_buffer[i] = buffer + i;
}
}
libs/jpeg-9/jdapimin.c
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/*
* jdapimin.c
*
* Copyright (C) 1994-1998, Thomas G. Lane.
* Modified 2009 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains application interface code for the decompression half
* of the JPEG library. These are the "minimum" API routines that may be
* needed in either the normal full-decompression case or the
* transcoding-only case.
*
* Most of the routines intended to be called directly by an application
* are in this file or in jdapistd.c. But also see jcomapi.c for routines
* shared by compression and decompression, and jdtrans.c for the transcoding
* case.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/*
* Initialization of a JPEG decompression object.
* The error manager must already be set up (in case memory manager fails).
*/
GLOBAL(void)
jpeg_CreateDecompress (j_decompress_ptr cinfo, int version, size_t structsize)
{
int i;
/* Guard against version mismatches between library and caller. */
cinfo->mem = NULL; /* so jpeg_destroy knows mem mgr not called */
if (version != JPEG_LIB_VERSION)
ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version);
if (structsize != SIZEOF(struct jpeg_decompress_struct))
ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE,
(int) SIZEOF(struct jpeg_decompress_struct), (int) structsize);
/* For debugging purposes, we zero the whole master structure.
* But the application has already set the err pointer, and may have set
* client_data, so we have to save and restore those fields.
* Note: if application hasn't set client_data, tools like Purify may
* complain here.
*/
{
struct jpeg_error_mgr * err = cinfo->err;
void * client_data = cinfo->client_data; /* ignore Purify complaint here */
MEMZERO(cinfo, SIZEOF(struct jpeg_decompress_struct));
cinfo->err = err;
cinfo->client_data = client_data;
}
cinfo->is_decompressor = TRUE;
/* Initialize a memory manager instance for this object */
jinit_memory_mgr((j_common_ptr) cinfo);
/* Zero out pointers to permanent structures. */
cinfo->progress = NULL;
cinfo->src = NULL;
for (i = 0; i < NUM_QUANT_TBLS; i++)
cinfo->quant_tbl_ptrs[i] = NULL;
for (i = 0; i < NUM_HUFF_TBLS; i++) {
cinfo->dc_huff_tbl_ptrs[i] = NULL;
cinfo->ac_huff_tbl_ptrs[i] = NULL;
}
/* Initialize marker processor so application can override methods
* for COM, APPn markers before calling jpeg_read_header.
*/
cinfo->marker_list = NULL;
jinit_marker_reader(cinfo);
/* And initialize the overall input controller. */
jinit_input_controller(cinfo);
/* OK, I'm ready */
cinfo->global_state = DSTATE_START;
}
/*
* Destruction of a JPEG decompression object
*/
GLOBAL(void)
jpeg_destroy_decompress (j_decompress_ptr cinfo)
{
jpeg_destroy((j_common_ptr) cinfo); /* use common routine */
}
/*
* Abort processing of a JPEG decompression operation,
* but don't destroy the object itself.
*/
GLOBAL(void)
jpeg_abort_decompress (j_decompress_ptr cinfo)
{
jpeg_abort((j_common_ptr) cinfo); /* use common routine */
}
/*
* Set default decompression parameters.
*/
LOCAL(void)
default_decompress_parms (j_decompress_ptr cinfo)
{
/* Guess the input colorspace, and set output colorspace accordingly. */
/* (Wish JPEG committee had provided a real way to specify this...) */
/* Note application may override our guesses. */
switch (cinfo->num_components) {
case 1:
cinfo->jpeg_color_space = JCS_GRAYSCALE;
cinfo->out_color_space = JCS_GRAYSCALE;
break;
case 3:
if (cinfo->saw_JFIF_marker) {
cinfo->jpeg_color_space = JCS_YCbCr; /* JFIF implies YCbCr */
} else if (cinfo->saw_Adobe_marker) {
switch (cinfo->Adobe_transform) {
case 0:
cinfo->jpeg_color_space = JCS_RGB;
break;
case 1:
cinfo->jpeg_color_space = JCS_YCbCr;
break;
default:
WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform);
cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */
break;
}
} else {
/* Saw no special markers, try to guess from the component IDs */
int cid0 = cinfo->comp_info[0].component_id;
int cid1 = cinfo->comp_info[1].component_id;
int cid2 = cinfo->comp_info[2].component_id;
if (cid0 == 1 && cid1 == 2 && cid2 == 3)
cinfo->jpeg_color_space = JCS_YCbCr; /* assume JFIF w/out marker */
else if (cid0 == 82 && cid1 == 71 && cid2 == 66)
cinfo->jpeg_color_space = JCS_RGB; /* ASCII 'R', 'G', 'B' */
else {
TRACEMS3(cinfo, 1, JTRC_UNKNOWN_IDS, cid0, cid1, cid2);
cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */
}
}
/* Always guess RGB is proper output colorspace. */
cinfo->out_color_space = JCS_RGB;
break;
case 4:
if (cinfo->saw_Adobe_marker) {
switch (cinfo->Adobe_transform) {
case 0:
cinfo->jpeg_color_space = JCS_CMYK;
break;
case 2:
cinfo->jpeg_color_space = JCS_YCCK;
break;
default:
WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform);
cinfo->jpeg_color_space = JCS_YCCK; /* assume it's YCCK */
break;
}
} else {
/* No special markers, assume straight CMYK. */
cinfo->jpeg_color_space = JCS_CMYK;
}
cinfo->out_color_space = JCS_CMYK;
break;
default:
cinfo->jpeg_color_space = JCS_UNKNOWN;
cinfo->out_color_space = JCS_UNKNOWN;
break;
}
/* Set defaults for other decompression parameters. */
cinfo->scale_num = cinfo->block_size; /* 1:1 scaling */
cinfo->scale_denom = cinfo->block_size;
cinfo->output_gamma = 1.0;
cinfo->buffered_image = FALSE;
cinfo->raw_data_out = FALSE;
cinfo->dct_method = JDCT_DEFAULT;
cinfo->do_fancy_upsampling = TRUE;
cinfo->do_block_smoothing = TRUE;
cinfo->quantize_colors = FALSE;
/* We set these in case application only sets quantize_colors. */
cinfo->dither_mode = JDITHER_FS;
#ifdef QUANT_2PASS_SUPPORTED
cinfo->two_pass_quantize = TRUE;
#else
cinfo->two_pass_quantize = FALSE;
#endif
cinfo->desired_number_of_colors = 256;
cinfo->colormap = NULL;
/* Initialize for no mode change in buffered-image mode. */
cinfo->enable_1pass_quant = FALSE;
cinfo->enable_external_quant = FALSE;
cinfo->enable_2pass_quant = FALSE;
}
/*
* Decompression startup: read start of JPEG datastream to see what's there.
* Need only initialize JPEG object and supply a data source before calling.
*
* This routine will read as far as the first SOS marker (ie, actual start of
* compressed data), and will save all tables and parameters in the JPEG
* object. It will also initialize the decompression parameters to default
* values, and finally return JPEG_HEADER_OK. On return, the application may
* adjust the decompression parameters and then call jpeg_start_decompress.
* (Or, if the application only wanted to determine the image parameters,
* the data need not be decompressed. In that case, call jpeg_abort or
* jpeg_destroy to release any temporary space.)
* If an abbreviated (tables only) datastream is presented, the routine will
* return JPEG_HEADER_TABLES_ONLY upon reaching EOI. The application may then
* re-use the JPEG object to read the abbreviated image datastream(s).
* It is unnecessary (but OK) to call jpeg_abort in this case.
* The JPEG_SUSPENDED return code only occurs if the data source module
* requests suspension of the decompressor. In this case the application
* should load more source data and then re-call jpeg_read_header to resume
* processing.
* If a non-suspending data source is used and require_image is TRUE, then the
* return code need not be inspected since only JPEG_HEADER_OK is possible.
*
* This routine is now just a front end to jpeg_consume_input, with some
* extra error checking.
*/
GLOBAL(int)
jpeg_read_header (j_decompress_ptr cinfo, boolean require_image)
{
int retcode;
if (cinfo->global_state != DSTATE_START &&
cinfo->global_state != DSTATE_INHEADER)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
retcode = jpeg_consume_input(cinfo);
switch (retcode) {
case JPEG_REACHED_SOS:
retcode = JPEG_HEADER_OK;
break;
case JPEG_REACHED_EOI:
if (require_image) /* Complain if application wanted an image */
ERREXIT(cinfo, JERR_NO_IMAGE);
/* Reset to start state; it would be safer to require the application to
* call jpeg_abort, but we can't change it now for compatibility reasons.
* A side effect is to free any temporary memory (there shouldn't be any).
*/
jpeg_abort((j_common_ptr) cinfo); /* sets state = DSTATE_START */
retcode = JPEG_HEADER_TABLES_ONLY;
break;
case JPEG_SUSPENDED:
/* no work */
break;
}
return retcode;
}
/*
* Consume data in advance of what the decompressor requires.
* This can be called at any time once the decompressor object has
* been created and a data source has been set up.
*
* This routine is essentially a state machine that handles a couple
* of critical state-transition actions, namely initial setup and
* transition from header scanning to ready-for-start_decompress.
* All the actual input is done via the input controller's consume_input
* method.
*/
GLOBAL(int)
jpeg_consume_input (j_decompress_ptr cinfo)
{
int retcode = JPEG_SUSPENDED;
/* NB: every possible DSTATE value should be listed in this switch */
switch (cinfo->global_state) {
case DSTATE_START:
/* Start-of-datastream actions: reset appropriate modules */
(*cinfo->inputctl->reset_input_controller) (cinfo);
/* Initialize application's data source module */
(*cinfo->src->init_source) (cinfo);
cinfo->global_state = DSTATE_INHEADER;
/*FALLTHROUGH*/
case DSTATE_INHEADER:
retcode = (*cinfo->inputctl->consume_input) (cinfo);
if (retcode == JPEG_REACHED_SOS) { /* Found SOS, prepare to decompress */
/* Set up default parameters based on header data */
default_decompress_parms(cinfo);
/* Set global state: ready for start_decompress */
cinfo->global_state = DSTATE_READY;
}
break;
case DSTATE_READY:
/* Can't advance past first SOS until start_decompress is called */
retcode = JPEG_REACHED_SOS;
break;
case DSTATE_PRELOAD:
case DSTATE_PRESCAN:
case DSTATE_SCANNING:
case DSTATE_RAW_OK:
case DSTATE_BUFIMAGE:
case DSTATE_BUFPOST:
case DSTATE_STOPPING:
retcode = (*cinfo->inputctl->consume_input) (cinfo);
break;
default:
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
}
return retcode;
}
/*
* Have we finished reading the input file?
*/
GLOBAL(boolean)
jpeg_input_complete (j_decompress_ptr cinfo)
{
/* Check for valid jpeg object */
if (cinfo->global_state < DSTATE_START ||
cinfo->global_state > DSTATE_STOPPING)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
return cinfo->inputctl->eoi_reached;
}
/*
* Is there more than one scan?
*/
GLOBAL(boolean)
jpeg_has_multiple_scans (j_decompress_ptr cinfo)
{
/* Only valid after jpeg_read_header completes */
if (cinfo->global_state < DSTATE_READY ||
cinfo->global_state > DSTATE_STOPPING)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
return cinfo->inputctl->has_multiple_scans;
}
/*
* Finish JPEG decompression.
*
* This will normally just verify the file trailer and release temp storage.
*
* Returns FALSE if suspended. The return value need be inspected only if
* a suspending data source is used.
*/
GLOBAL(boolean)
jpeg_finish_decompress (j_decompress_ptr cinfo)
{
if ((cinfo->global_state == DSTATE_SCANNING ||
cinfo->global_state == DSTATE_RAW_OK) && ! cinfo->buffered_image) {
/* Terminate final pass of non-buffered mode */
if (cinfo->output_scanline < cinfo->output_height)
ERREXIT(cinfo, JERR_TOO_LITTLE_DATA);
(*cinfo->master->finish_output_pass) (cinfo);
cinfo->global_state = DSTATE_STOPPING;
} else if (cinfo->global_state == DSTATE_BUFIMAGE) {
/* Finishing after a buffered-image operation */
cinfo->global_state = DSTATE_STOPPING;
} else if (cinfo->global_state != DSTATE_STOPPING) {
/* STOPPING = repeat call after a suspension, anything else is error */
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
}
/* Read until EOI */
while (! cinfo->inputctl->eoi_reached) {
if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED)
return FALSE; /* Suspend, come back later */
}
/* Do final cleanup */
(*cinfo->src->term_source) (cinfo);
/* We can use jpeg_abort to release memory and reset global_state */
jpeg_abort((j_common_ptr) cinfo);
return TRUE;
}
libs/jpeg-9/jdapistd.c
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@@ -1,275 +0,0 @@
/*
* jdapistd.c
*
* Copyright (C) 1994-1996, Thomas G. Lane.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains application interface code for the decompression half
* of the JPEG library. These are the "standard" API routines that are
* used in the normal full-decompression case. They are not used by a
* transcoding-only application. Note that if an application links in
* jpeg_start_decompress, it will end up linking in the entire decompressor.
* We thus must separate this file from jdapimin.c to avoid linking the
* whole decompression library into a transcoder.
*/
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
/* Forward declarations */
LOCAL(boolean) output_pass_setup JPP((j_decompress_ptr cinfo));
/*
* Decompression initialization.
* jpeg_read_header must be completed before calling this.
*
* If a multipass operating mode was selected, this will do all but the
* last pass, and thus may take a great deal of time.
*
* Returns FALSE if suspended. The return value need be inspected only if
* a suspending data source is used.
*/
GLOBAL(boolean)
jpeg_start_decompress (j_decompress_ptr cinfo)
{
if (cinfo->global_state == DSTATE_READY) {
/* First call: initialize master control, select active modules */
jinit_master_decompress(cinfo);
if (cinfo->buffered_image) {
/* No more work here; expecting jpeg_start_output next */
cinfo->global_state = DSTATE_BUFIMAGE;
return TRUE;
}
cinfo->global_state = DSTATE_PRELOAD;
}
if (cinfo->global_state == DSTATE_PRELOAD) {
/* If file has multiple scans, absorb them all into the coef buffer */
if (cinfo->inputctl->has_multiple_scans) {
#ifdef D_MULTISCAN_FILES_SUPPORTED
for (;;) {
int retcode;
/* Call progress monitor hook if present */
if (cinfo->progress != NULL)
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
/* Absorb some more input */
retcode = (*cinfo->inputctl->consume_input) (cinfo);
if (retcode == JPEG_SUSPENDED)
return FALSE;
if (retcode == JPEG_REACHED_EOI)
break;
/* Advance progress counter if appropriate */
if (cinfo->progress != NULL &&
(retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) {
if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) {
/* jdmaster underestimated number of scans; ratchet up one scan */
cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows;
}
}
}
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif /* D_MULTISCAN_FILES_SUPPORTED */
}
cinfo->output_scan_number = cinfo->input_scan_number;
} else if (cinfo->global_state != DSTATE_PRESCAN)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* Perform any dummy output passes, and set up for the final pass */
return output_pass_setup(cinfo);
}
/*
* Set up for an output pass, and perform any dummy pass(es) needed.
* Common subroutine for jpeg_start_decompress and jpeg_start_output.
* Entry: global_state = DSTATE_PRESCAN only if previously suspended.
* Exit: If done, returns TRUE and sets global_state for proper output mode.
* If suspended, returns FALSE and sets global_state = DSTATE_PRESCAN.
*/
LOCAL(boolean)
output_pass_setup (j_decompress_ptr cinfo)
{
if (cinfo->global_state != DSTATE_PRESCAN) {
/* First call: do pass setup */
(*cinfo->master->prepare_for_output_pass) (cinfo);
cinfo->output_scanline = 0;
cinfo->global_state = DSTATE_PRESCAN;
}
/* Loop over any required dummy passes */
while (cinfo->master->is_dummy_pass) {
#ifdef QUANT_2PASS_SUPPORTED
/* Crank through the dummy pass */
while (cinfo->output_scanline < cinfo->output_height) {
JDIMENSION last_scanline;
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->output_scanline;
cinfo->progress->pass_limit = (long) cinfo->output_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Process some data */
last_scanline = cinfo->output_scanline;
(*cinfo->main->process_data) (cinfo, (JSAMPARRAY) NULL,
&cinfo->output_scanline, (JDIMENSION) 0);
if (cinfo->output_scanline == last_scanline)
return FALSE; /* No progress made, must suspend */
}
/* Finish up dummy pass, and set up for another one */
(*cinfo->master->finish_output_pass) (cinfo);
(*cinfo->master->prepare_for_output_pass) (cinfo);
cinfo->output_scanline = 0;
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif /* QUANT_2PASS_SUPPORTED */
}
/* Ready for application to drive output pass through
* jpeg_read_scanlines or jpeg_read_raw_data.
*/
cinfo->global_state = cinfo->raw_data_out ? DSTATE_RAW_OK : DSTATE_SCANNING;
return TRUE;
}
/*
* Read some scanlines of data from the JPEG decompressor.
*
* The return value will be the number of lines actually read.
* This may be less than the number requested in several cases,
* including bottom of image, data source suspension, and operating
* modes that emit multiple scanlines at a time.
*
* Note: we warn about excess calls to jpeg_read_scanlines() since
* this likely signals an application programmer error. However,
* an oversize buffer (max_lines > scanlines remaining) is not an error.
*/
GLOBAL(JDIMENSION)
jpeg_read_scanlines (j_decompress_ptr cinfo, JSAMPARRAY scanlines,
JDIMENSION max_lines)
{
JDIMENSION row_ctr;
if (cinfo->global_state != DSTATE_SCANNING)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->output_scanline >= cinfo->output_height) {
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
return 0;
}
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->output_scanline;
cinfo->progress->pass_limit = (long) cinfo->output_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Process some data */
row_ctr = 0;
(*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, max_lines);
cinfo->output_scanline += row_ctr;
return row_ctr;
}
/*
* Alternate entry point to read raw data.
* Processes exactly one iMCU row per call, unless suspended.
*/
GLOBAL(JDIMENSION)
jpeg_read_raw_data (j_decompress_ptr cinfo, JSAMPIMAGE data,
JDIMENSION max_lines)
{
JDIMENSION lines_per_iMCU_row;
if (cinfo->global_state != DSTATE_RAW_OK)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->output_scanline >= cinfo->output_height) {
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
return 0;
}
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->output_scanline;
cinfo->progress->pass_limit = (long) cinfo->output_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Verify that at least one iMCU row can be returned. */
lines_per_iMCU_row = cinfo->max_v_samp_factor * cinfo->min_DCT_v_scaled_size;
if (max_lines < lines_per_iMCU_row)
ERREXIT(cinfo, JERR_BUFFER_SIZE);
/* Decompress directly into user's buffer. */
if (! (*cinfo->coef->decompress_data) (cinfo, data))
return 0; /* suspension forced, can do nothing more */
/* OK, we processed one iMCU row. */
cinfo->output_scanline += lines_per_iMCU_row;
return lines_per_iMCU_row;
}
/* Additional entry points for buffered-image mode. */
#ifdef D_MULTISCAN_FILES_SUPPORTED
/*
* Initialize for an output pass in buffered-image mode.
*/
GLOBAL(boolean)
jpeg_start_output (j_decompress_ptr cinfo, int scan_number)
{
if (cinfo->global_state != DSTATE_BUFIMAGE &&
cinfo->global_state != DSTATE_PRESCAN)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
/* Limit scan number to valid range */
if (scan_number <= 0)
scan_number = 1;
if (cinfo->inputctl->eoi_reached &&
scan_number > cinfo->input_scan_number)
scan_number = cinfo->input_scan_number;
cinfo->output_scan_number = scan_number;
/* Perform any dummy output passes, and set up for the real pass */
return output_pass_setup(cinfo);
}
/*
* Finish up after an output pass in buffered-image mode.
*
* Returns FALSE if suspended. The return value need be inspected only if
* a suspending data source is used.
*/
GLOBAL(boolean)
jpeg_finish_output (j_decompress_ptr cinfo)
{
if ((cinfo->global_state == DSTATE_SCANNING ||
cinfo->global_state == DSTATE_RAW_OK) && cinfo->buffered_image) {
/* Terminate this pass. */
/* We do not require the whole pass to have been completed. */
(*cinfo->master->finish_output_pass) (cinfo);
cinfo->global_state = DSTATE_BUFPOST;
} else if (cinfo->global_state != DSTATE_BUFPOST) {
/* BUFPOST = repeat call after a suspension, anything else is error */
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
}
/* Read markers looking for SOS or EOI */
while (cinfo->input_scan_number <= cinfo->output_scan_number &&
! cinfo->inputctl->eoi_reached) {
if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED)
return FALSE; /* Suspend, come back later */
}
cinfo->global_state = DSTATE_BUFIMAGE;
return TRUE;
}
#endif /* D_MULTISCAN_FILES_SUPPORTED */

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