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sws: avoid signed C99 overflows

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-10-14 03:59:45 +02:00
parent 555f352f99
commit 3ee8eefbf2
1 changed files with 5 additions and 5 deletions
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10
libswscale/swscale.c
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@ -848,33 +848,33 @@ int attribute_align_arg sws_scale(struct SwsContext *c,
y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
c->pal_yuv[i]= y + (u<<8) + (v<<16) + (a<<24);
c->pal_yuv[i]= y + (u<<8) + (v<<16) + (a<<24U);
switch (c->dstFormat) {
case AV_PIX_FMT_BGR32:
#if !HAVE_BIGENDIAN
case AV_PIX_FMT_RGB24:
#endif
c->pal_rgb[i]= r + (g<<8) + (b<<16) + (a<<24);
c->pal_rgb[i]= r + (g<<8) + (b<<16) + (a<<24U);
break;
case AV_PIX_FMT_BGR32_1:
#if HAVE_BIGENDIAN
case AV_PIX_FMT_BGR24:
#endif
c->pal_rgb[i]= a + (r<<8) + (g<<16) + (b<<24);
c->pal_rgb[i]= a + (r<<8) + (g<<16) + (b<<24U);
break;
case AV_PIX_FMT_RGB32_1:
#if HAVE_BIGENDIAN
case AV_PIX_FMT_RGB24:
#endif
c->pal_rgb[i]= a + (b<<8) + (g<<16) + (r<<24);
c->pal_rgb[i]= a + (b<<8) + (g<<16) + (r<<24U);
break;
case AV_PIX_FMT_RGB32:
#if !HAVE_BIGENDIAN
case AV_PIX_FMT_BGR24:
#endif
default:
c->pal_rgb[i]= b + (g<<8) + (r<<16) + (a<<24);
c->pal_rgb[i]= b + (g<<8) + (r<<16) + (a<<24U);
}
}
}