From a70c27e813346a11e5fff3d329ecba82fb76826a Mon Sep 17 00:00:00 2001 From: Kostya Shishkov Date: Mon, 31 Jul 2006 03:32:59 +0000 Subject: [PATCH] Fix overflows in bicubic interpolation. Originally committed as revision 5868 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/vc1dsp.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/libavcodec/vc1dsp.c b/libavcodec/vc1dsp.c index befd60c..16fe31b 100644 --- a/libavcodec/vc1dsp.c +++ b/libavcodec/vc1dsp.c @@ -314,7 +314,7 @@ static void vc1_inv_trans_4x4_c(DCTELEM block[64], int n) /** Filter used to interpolate fractional pel values */ -static always_inline uint8_t vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r) +static always_inline int vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r) { switch(mode){ case 0: //no shift @@ -343,7 +343,7 @@ static void vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride, int mode, tptr = tmp; for(j = 0; j < 11; j++) { for(i = 0; i < 8; i++) - tptr[i] = vc1_mspel_filter(src + i, 1, m, r); + tptr[i] = clip_uint8(vc1_mspel_filter(src + i, 1, m, r)); src += stride; tptr += 8; } @@ -353,7 +353,7 @@ static void vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride, int mode, tptr = tmp + 8; for(j = 0; j < 8; j++) { for(i = 0; i < 8; i++) - dst[i] = vc1_mspel_filter(tptr + i, 8, m, r); + dst[i] = clip_uint8(vc1_mspel_filter(tptr + i, 8, m, r)); dst += stride; tptr += 8; } -- 2.7.4