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two bands case

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This commit is contained in:
homm 2014-11-09 01:05:50 +03:00
parent 1a7c9b72ab
commit abc5e11371
1 changed files with 12 additions and 1 deletions
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13
libImaging/Antialias.c
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@ -216,7 +216,18 @@ ImagingStretchHorizontal(Imaging imIn, int xsize, int filter)
xmin = xbounds[xx * 2 + 0];
xmax = xbounds[xx * 2 + 1];
k = &kk[xx * kmax];
if (imIn->bands == 3) {
if (imIn->bands == 2) {
ss0 = ss1 = 0.5;
for (x = xmin; x < xmax; x++) {
ss0 += i2f((UINT8) imIn->image[yy][x*4 + 0]) * k[x - xmin];
ss1 += i2f((UINT8) imIn->image[yy][x*4 + 3]) * k[x - xmin];
}
#ifdef WORDS_BIGENDIAN
imOut->image32[yy][xx] = clip8(ss1) | clip8(ss0) << 24;
#else
imOut->image32[yy][xx] = clip8(ss0) | clip8(ss1) << 24;
#endif
} else if (imIn->bands == 3) {
ss0 = ss1 = ss2 = 0.5;
for (x = xmin; x < xmax; x++) {
ss0 += i2f((UINT8) imIn->image[yy][x*4 + 0]) * k[x - xmin];