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spudec: Fix conversion from paletted to MPlayer's OSD format 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@31705 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2010-07-11 13:36:02 +00:00 committed by Uoti Urpala
parent e73ff7ae70
commit 95db5dd48c
1 changed files with 6 additions and 4 deletions
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10
spudec.c
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@ -1309,10 +1309,12 @@ void spudec_set_paletted(void *this, const uint8_t *pal_img, int pal_stride,
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
uint32_t pixel = pal[pal_img[x]];
*aimg++ = -(pixel >> 24);
*img++ = (((pixel & 0x000000ff) >> 0) +
((pixel & 0x0000ff00) >> 7) +
((pixel & 0x00ff0000) >> 16)) >> 2;
int alpha = pixel >> 24;
int gray = (((pixel & 0x000000ff) >> 0) +
((pixel & 0x0000ff00) >> 7) +
((pixel & 0x00ff0000) >> 16)) >> 2;
*aimg++ = -alpha;
*img++ = FFMIN(gray, alpha);
}
for (; x < stride; x++)
*aimg++ = *img++ = 0;