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Util: Refactor some things that will be used later

This commit is contained in:
Vicki Pfau 2023-04-02 23:23:54 -07:00
parent 2d07a269fc
commit 329159bddc
1 changed files with 31 additions and 13 deletions
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44
src/util/image.c
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@ -13,6 +13,34 @@
#define ROW(IM, Y) PIXEL(IM, 0, Y)
#ifdef __BIG_ENDIAN__
#define SHIFT_IN(COLOR, DEPTH) \
if ((DEPTH) < 4) { \
(COLOR) >>= (32 - 8 * (DEPTH)); \
}
#define SHIFT_OUT(COLOR, DEPTH) \
if ((DEPTH) < 4) { \
(COLOR) <<= (32 - 8 *(DEPTH)); \
}
#else
#define SHIFT_IN(COLOR, DEPTH)
#define SHIFT_OUT(COLOR, DEPTH)
#endif
#define GET_PIXEL(DST, SRC, DEPTH) do { \
uint32_t _color = 0; \
memcpy(&_color, (void*) (SRC), (DEPTH)); \
SHIFT_IN(_color, (DEPTH)); \
(DST) = _color; \
} while (0)
#define PUT_PIXEL(SRC, DST, DEPTH) do { \
uint32_t _color = (SRC); \
SHIFT_OUT(_color, (DEPTH)); \
memcpy((void*) (DST), &_color, (DEPTH)); \
} while (0);
struct mImage* mImageCreate(unsigned width, unsigned height, enum mColorFormat format) {
return mImageCreateWithStride(width, height, width, format);
}
@ -147,20 +175,10 @@ struct mImage* mImageConvertToFormat(const struct mImage* image, enum mColorForm
uintptr_t src = (uintptr_t) ROW(image, y);
uintptr_t dst = (uintptr_t) ROW(newImage, y);
for (x = 0; x < newImage->width; ++x, src += image->depth, dst += newImage->depth) {
uint32_t color = 0;
memcpy(&color, (void*) src, image->depth);
#ifdef __BIG_ENDIAN__
if (image->depth < 4) {
color >>= (32 - 8 * image->depth);
}
#endif
uint32_t color;
GET_PIXEL(color, src, image->depth);
color = mColorConvert(color, image->format, format);
#ifdef __BIG_ENDIAN__
if (newImage->depth < 4) {
color <<= (32 - 8 * newImage->depth);
}
#endif
memcpy((void*) dst, &color, newImage->depth);
PUT_PIXEL(color, dst, newImage->depth);
}
}
return newImage;