From 5a446bc88e49cc6400d0c646ca1eb540a727c9de Mon Sep 17 00:00:00 2001 From: Loren Merritt Date: Wed, 28 Jan 2009 11:12:19 +0000 Subject: fix an overflow in vc1 intra overlap filter Originally committed as revision 16845 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/vc1dsp.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'libavcodec/vc1dsp.c') diff --git a/libavcodec/vc1dsp.c b/libavcodec/vc1dsp.c index 8a1a83411f..5868abbb88 100644 --- a/libavcodec/vc1dsp.c +++ b/libavcodec/vc1dsp.c @@ -45,8 +45,8 @@ static void vc1_v_overlap_c(uint8_t* src, int stride) d2 = (a - d + b - c + 4 - rnd) >> 3; src[-2*stride] = a - d1; - src[-stride] = b - d2; - src[0] = c + d2; + src[-stride] = av_clip_uint8(b - d2); + src[0] = av_clip_uint8(c + d2); src[stride] = d + d1; src++; rnd = !rnd; @@ -70,8 +70,8 @@ static void vc1_h_overlap_c(uint8_t* src, int stride) d2 = (a - d + b - c + 4 - rnd) >> 3; src[-2] = a - d1; - src[-1] = b - d2; - src[0] = c + d2; + src[-1] = av_clip_uint8(b - d2); + src[0] = av_clip_uint8(c + d2); src[1] = d + d1; src += stride; rnd = !rnd; -- cgit v1.2.3