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swscale: fix signed shift overflows in ff_yuv2rgb_c_init_tables()

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Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard 2011-10-21 20:36:11 +01:00
parent 5dd35b43f1
commit 41ac093f7e
1 changed files with 2 additions and 2 deletions
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4
libswscale/yuv2rgb.c
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@ -788,8 +788,8 @@ av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int
y_table32 = c->yuvTable;
yb = -(384<<16) - oy;
for (i = 0; i < 1024; i++) {
uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
y_table32[i ] = (yval << rbase) + (needAlpha ? 0 : (255 << abase));
unsigned yval = av_clip_uint8((yb + 0x8000) >> 16);
y_table32[i ] = (yval << rbase) + (needAlpha ? 0 : (255u << abase));
y_table32[i+1024] = yval << gbase;
y_table32[i+2048] = yval << bbase;
yb += cy;