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| author | Mans Rullgard <mans@mansr.com> | 2011-10-08 13:52:44 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-11-04 01:00:09 +0100 |
| commit | 4ba0e0375961fcb05d0d4258e75c807c1ed577f5 (patch) | |
| tree | 538f77bbd573af19b4d1eedf86a789627b741655 | |
| parent | 37ce6ba425d70718b646ba49ec23761abd511d9e (diff) | |
| download | ffmpeg-4ba0e0375961fcb05d0d4258e75c807c1ed577f5.tar.gz | |
motion_est: fix some signed overflows
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit e708afd3c026a9eb547dab07781320a7e2564312)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/motion_est.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/motion_est.c b/libavcodec/motion_est.c index c12ebf4c7c..02e804d88f 100644 --- a/libavcodec/motion_est.c +++ b/libavcodec/motion_est.c @@ -1040,7 +1040,7 @@ void ff_estimate_p_frame_motion(MpegEncContext * s, /* intra / predictive decision */ pix = c->src[0][0]; sum = s->dsp.pix_sum(pix, s->linesize); - varc = s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)(sum*sum))>>8) + 500; + varc = s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)sum*sum)>>8) + 500; pic->mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8; pic->mb_var [s->mb_stride * mb_y + mb_x] = (varc+128)>>8; @@ -1202,7 +1202,7 @@ void ff_estimate_p_frame_motion(MpegEncContext * s, if((c->avctx->mb_cmp&0xFF)==FF_CMP_SSE){ intra_score= varc - 500; }else{ - int mean= (sum+128)>>8; + unsigned mean = (sum+128)>>8; mean*= 0x01010101; for(i=0; i<16; i++){ |