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Try fix bigendian

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This commit is contained in:
Aleksandr Karpinskii 2024-09-16 16:37:39 +02:00
parent 1d5b330758
commit a988750595
1 changed files with 13 additions and 9 deletions
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20
src/_webp.c
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@ -89,7 +89,7 @@ HandleMuxError(WebPMuxError err, char *chunk) {
static int
import_frame_libwebp(WebPPicture *frame, Imaging im) {
UINT32 mask = 0;
int drop_alpha = strcmp(im->mode, "RGBA");
if (strcmp(im->mode, "RGBA") && strcmp(im->mode, "RGB") &&
strcmp(im->mode, "RGBX")) {
@ -97,10 +97,6 @@ import_frame_libwebp(WebPPicture *frame, Imaging im) {
return -1;
}
if (strcmp(im->mode, "RGBA")) {
mask = MASK_UINT32_CHANNEL_3;
}
frame->width = im->xsize;
frame->height = im->ysize;
frame->use_argb = 1; // Don't convert RGB pixels to YUV
@ -113,10 +109,18 @@ import_frame_libwebp(WebPPicture *frame, Imaging im) {
for (int y = 0; y < im->ysize; ++y) {
UINT8 *src = (UINT8 *)im->image32[y];
UINT32 *dst = frame->argb + frame->argb_stride * y;
if (drop_alpha) {
for (int x = 0; x < im->xsize; ++x) {
UINT32 pix =
MAKE_UINT32(src[x * 4 + 2], src[x * 4 + 1], src[x * 4], src[x * 4 + 3]);
dst[x] = pix | mask;
dst[x] =
((UINT32)(src[x * 4 + 2]) | ((UINT32)(src[x * 4 + 1]) << 8) |
((UINT32)(src[x * 4]) << 16) | (0xff << 24));
}
} else {
for (int x = 0; x < im->xsize; ++x) {
dst[x] =
((UINT32)(src[x * 4 + 2]) | ((UINT32)(src[x * 4 + 1]) << 8) |
((UINT32)(src[x * 4]) << 16) | ((UINT32)(src[x * 4 + 3]) << 24));
}
}
}