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Martin Felis
132 lines
3.1 KiB
C
132 lines
3.1 KiB
C
//-----------------------------------------------------------------------------
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//
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// ImageLib Sources
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// Copyright (C) 2000 by Denton Woods
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// Last modified: 11/23/2000 <--Y2K Compliant! =]
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//
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// Filename: openilut/allegro.c
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//
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// Description: Allegro functions for images
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//
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//-----------------------------------------------------------------------------
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif //HAVE_CONFIG_H
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#ifdef ILUT_USE_ALLEGRO
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#include "ilut_allegro.h"
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#endif
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#include "ilut_internal.h"
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#ifdef ILUT_USE_ALLEGRO
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ILboolean ilConvertPal(ILenum DestFormat);
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// Does not account for converting luminance...
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BITMAP* ILAPIENTRY ilutConvertToAlleg(PALETTE Pal)
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{
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BITMAP *Bitmap;
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ILimage *TempImage;
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ILuint i = 0, j = 0;
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ilutCurImage = ilGetCurImage();
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if (ilutCurImage == NULL) {
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ilSetError(ILUT_ILLEGAL_OPERATION);
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return NULL;
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}
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// Should be IL_BGR(A), but Djgpp screws up somewhere along the line.
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if (ilutCurImage->Format == IL_RGB || ilutCurImage->Format == IL_RGBA) {
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iluSwapColours();
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}
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if (ilutCurImage->Origin == IL_ORIGIN_LOWER_LEFT)
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iluFlipImage();
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if (ilutCurImage->Type > IL_UNSIGNED_BYTE) {} // Can't do anything about this right now...
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if (ilutCurImage->Type == IL_BYTE) {} // Can't do anything about this right now...
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Bitmap = create_bitmap_ex(ilutCurImage->Bpp * 8, ilutCurImage->Width, ilutCurImage->Height);
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if (Bitmap == NULL) {
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return IL_FALSE;
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}
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memcpy(Bitmap->dat, ilutCurImage->Data, ilutCurImage->SizeOfData);
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// Should we make this toggleable?
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if (ilutCurImage->Bpp == 8 && ilutCurImage->Pal.PalType != IL_PAL_NONE) {
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// Use the image's palette if there is one
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// ilConvertPal is destructive to the original image
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// @TODO: Use new ilCopyPal!!!
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TempImage = ilNewImage(ilutCurImage->Width, ilutCurImage->Height, ilutCurImage->Depth, ilutCurImage->Bpp, 1);
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ilCopyImageAttr(TempImage, ilutCurImage);
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ilSetCurImage(TempImage);
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if (!ilConvertPal(IL_PAL_RGB24)) {
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destroy_bitmap(Bitmap);
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ilSetError(ILUT_ILLEGAL_OPERATION);
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return NULL;
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}
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for (; i < ilutCurImage->Pal.PalSize && i < 768; i += 3, j++) {
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Pal[j].r = TempImage->Pal.Palette[i+0];
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Pal[j].g = TempImage->Pal.Palette[i+1];
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Pal[j].b = TempImage->Pal.Palette[i+2];
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Pal[j].filler = 255;
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}
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ilCloseImage(TempImage);
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ilSetCurImage(ilutCurImage);
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}
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return Bitmap;
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}
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#ifndef _WIN32_WCE
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BITMAP* ILAPIENTRY ilutAllegLoadImage(ILstring FileName)
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{
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ILuint ImgId;
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PALETTE Pal;
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ilGenImages(1, &ImgId);
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ilBindImage(ImgId);
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if (!ilLoadImage(FileName)) {
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ilDeleteImages(1, &ImgId);
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return 0;
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}
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ilDeleteImages(1, &ImgId);
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return ilutConvertToAlleg(Pal);
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}
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#endif//_WIN32_WCE
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// Unfinished
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ILboolean ILAPIENTRY ilutAllegFromBitmap(BITMAP *Bitmap)
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{
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ilutCurImage = ilGetCurImage();
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if (ilutCurImage == NULL) {
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ilSetError(ILUT_ILLEGAL_OPERATION);
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return IL_FALSE;
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}
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if (Bitmap == NULL || Bitmap->w == 0 || Bitmap->h == 0) {
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ilSetError(ILUT_INVALID_PARAM);
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return IL_FALSE;
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}
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if (!ilTexImage(Bitmap->w, Bitmap->h, 1, 3, IL_RGB, IL_UNSIGNED_BYTE, NULL))
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return IL_FALSE;
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ilutCurImage->Origin = IL_ORIGIN_LOWER_LEFT; // I have no idea.
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return IL_TRUE;
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}
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#endif//ILUT_USE_ALLEGRO
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