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mb_shuffle big endian

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Junxiao Shi 2024-06-01 22:42:11 +00:00
parent ed15ed9737
commit fb7702f638
1 changed files with 27 additions and 1 deletions
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28
src/decode.c
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@ -303,7 +303,33 @@ shuffle_mb_unavail(UINT8 *dst, const UINT8 *src, int pixels) {
static void static void
mb_shuffle(UINT8 *dst, const UINT8 *src, Imaging im, ImagingCodecState state) { mb_shuffle(UINT8 *dst, const UINT8 *src, Imaging im, ImagingCodecState state) {
memcpy(dst, src, state->xsize * im->pixelsize); int size = state->xsize * im->pixelsize;
#ifdef WORDS_BIGENDIAN
switch (im->depth) {
default:
abort();
return;
case 4 * CHAR_BIT: {
for (int i = 0; i < size; i += 4) {
dst[i] = src[i + 3];
dst[i + 1] = src[i + 2];
dst[i + 2] = src[i + 1];
dst[i + 3] = src[i];
}
return;
}
case 2 * CHAR_BIT: {
for (int i = 0; i < size; i += 2) {
dst[i] = src[i + 1];
dst[i + 1] = src[i];
}
return;
case CHAR_BIT:
// fallthrough
}
}
#endif
memcpy(dst, src, size);
} }
static int static int