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Merge pull request #6509 from radarhere/pa2p

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Hugo van Kemenade 2022-08-17 09:34:32 +03:00 committed by GitHub
commit d80e93e435
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1 changed files with 14 additions and 0 deletions
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14
src/libImaging/Convert.c
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@ -1026,6 +1026,14 @@ pa2l(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
}
}
static void
pa2p(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
int x;
for (x = 0; x < xsize; x++, in += 4) {
*out++ = in[0];
}
}
static void
p2pa(UINT8 *out, const UINT8 *in, int xsize, ImagingPalette palette) {
int x;
@ -1209,6 +1217,8 @@ frompalette(Imaging imOut, Imaging imIn, const char *mode) {
convert = alpha ? pa2l : p2l;
} else if (strcmp(mode, "LA") == 0) {
convert = alpha ? pa2la : p2la;
} else if (strcmp(mode, "P") == 0) {
convert = pa2p;
} else if (strcmp(mode, "PA") == 0) {
convert = p2pa;
} else if (strcmp(mode, "I") == 0) {
@ -1233,6 +1243,10 @@ frompalette(Imaging imOut, Imaging imIn, const char *mode) {
if (!imOut) {
return NULL;
}
if (strcmp(mode, "P") == 0) {
ImagingPaletteDelete(imOut->palette);
imOut->palette = ImagingPaletteDuplicate(imIn->palette);
}
ImagingSectionEnter(&cookie);
for (y = 0; y < imIn->ysize; y++) {