Add DevIL 1.7.8.

libs/DevIL-1.7.8/examples/override_example/iotest.c

@@ -0,0 +1,165 @@
+//-----------------------------------------------------------------------------
+//
+// ImageLib Source Example
+// Copyright (C) 2000-2001 by Denton Woods
+// Last modified:  09/06/2001 <--Y2K Compliant! =]
+//
+// Filename: examples/file override/file override.c
+//
+// Description: An example of overriding the DevIL reading and
+//				  writing functions via ilSetRead and ilSetWrite.
+//
+//-----------------------------------------------------------------------------
+
+// Required include files.
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <IL/il.h>
+#include <stdio.h>
+
+/* We would need ILU just because of iluErrorString() function... */
+/* So make it possible for both with and without ILU!  */
+#ifdef ILU_ENABLED
+#include <IL/ilu.h>
+#define PRINT_ERROR_MACRO printf("Error: %s\n", iluErrorString(Error))
+#else /* not ILU_ENABLED */
+#define PRINT_ERROR_MACRO printf("Error: 0x%X\n", (unsigned int)Error)
+#endif /* not ILU_ENABLED */
+
+ILHANDLE ILAPIENTRY iOpenRead(const char *FileName)
+{
+	return (ILHANDLE)fopen(FileName, "rb");
+}
+
+void ILAPIENTRY iCloseRead(ILHANDLE Handle)
+{
+	fclose((FILE*)Handle);
+	return;
+}
+
+ILHANDLE ILAPIENTRY iOpenWrite(const char *FileName)
+{
+	return (ILHANDLE)fopen(FileName, "wb");
+}
+
+void ILAPIENTRY iCloseWrite(ILHANDLE Handle)
+{
+	fclose((FILE*)Handle);
+	return;
+}
+
+ILboolean ILAPIENTRY iEof(ILHANDLE Handle)
+{
+	return (feof((FILE*)Handle) != 0);
+}
+
+ILint ILAPIENTRY iGetc(ILHANDLE Handle)
+{
+	return fgetc((FILE*)Handle);
+}
+
+ILint ILAPIENTRY iPutc(ILubyte Char, ILHANDLE Handle)
+{
+	return fputc(Char, (FILE*)Handle);
+}
+
+ILint ILAPIENTRY iRead(void *Buffer, ILuint Size, ILuint Number, ILHANDLE Handle)
+{
+	return fread(Buffer, Size, Number, (FILE*)Handle);
+}
+
+ILint ILAPIENTRY iWrite(const void *Buffer, ILuint Size, ILuint Number, ILHANDLE Handle)
+{
+	return fwrite(Buffer, Size, Number, (FILE*)Handle);
+}
+
+ILint ILAPIENTRY iReadSeek(ILHANDLE Handle, ILint Offset, ILint Mode)
+{
+	return fseek((FILE*)Handle, Offset, Mode);
+}
+
+ILint ILAPIENTRY iWriteSeek(ILHANDLE Handle, ILint Offset, ILint Mode)
+{
+	return fseek((FILE*)Handle, Offset, Mode);
+}
+
+ILint ILAPIENTRY iReadTell(ILHANDLE Handle)
+{
+	return ftell((FILE*)Handle);
+}
+
+ILint ILAPIENTRY iWriteTell(ILHANDLE Handle)
+{
+	return ftell((FILE*)Handle);
+}
+
+
+
+
+int main(int argc, char **argv)
+{
+	ILuint	ImgId;
+	ILenum	Error;
+
+	// We use the filename specified in the first argument of the command-line.
+	if (argc < 2) {
+		printf("Please specify a file to open.\n");
+		return 1;
+	}
+
+	// Check if the shared lib's version matches the executable's version.
+	if (ilGetInteger(IL_VERSION_NUM) < IL_VERSION) {
+		printf("DevIL version is different...exiting!\n");
+		return 2;
+	}
+
+	// Initialize DevIL.
+	ilInit();
+	// Generate the main image name to use.
+	ilGenImages(1, &ImgId);
+	// Bind this image name.
+	ilBindImage(ImgId);
+
+
+	// Override the reading functions.
+	ilSetRead(iOpenRead, iCloseRead, iEof, iGetc, iRead, iReadSeek, iReadTell);
+	ilSetWrite(iOpenWrite, iCloseWrite, iPutc, iWriteSeek, iWriteTell, iWrite);
+
+
+	// Loads the image specified by File into the image named by ImgId.
+	if (!ilLoadImage(argv[1])) {
+		printf("Could not open file...exiting.\n");
+		return 3;
+	}
+
+	// Display the image's dimensions to the end user.
+	printf("Width: %d  Height: %d  Depth: %d  Bpp: %d\n", ilGetInteger(IL_IMAGE_WIDTH),
+		ilGetInteger(IL_IMAGE_HEIGHT), ilGetInteger(IL_IMAGE_DEPTH), ilGetInteger(IL_IMAGE_BYTES_PER_PIXEL));
+
+	// Enable this to let us overwrite the destination file if it already exists.
+	ilEnable(IL_FILE_OVERWRITE);
+
+	// If argv[2] is present, we save to this filename, else we save to test.tga.
+	if (argc > 2)
+		ilSaveImage(argv[2]);
+	else
+		ilSaveImage("test.tga");
+
+
+	// Reset the reading / writing functions when we're done loading specially.
+	//  This isn't required here, since we're exiting, but here's how it's done:
+	ilResetRead();
+	ilResetWrite();
+
+
+	// We're done with the image, so let's delete it.
+	ilDeleteImages(1, &ImgId);
+
+	// Simple Error detection loop that displays the Error to the user in a human-readable form.
+	while ((Error = ilGetError())) {
+		PRINT_ERROR_MACRO;}
+
+	return 0;
+}