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| author | Martin Storsjö <martin@martin.st> | 2013-09-04 01:36:51 +0300 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2013-09-04 14:33:29 +0300 |
| commit | a711a2cb473dc95708f371a82c85c97fe789b5c2 (patch) | |
| tree | e558b0bd4a86175726a499b41c47ce6a76d1689c /libavcodec/mpegvideo_motion.c | |
| parent | 0ebfdae099d2749240b6a565abcdf0bf62589748 (diff) | |
| download | ffmpeg-a711a2cb473dc95708f371a82c85c97fe789b5c2.tar.gz | |
mpegvideo: Avoid 32-bit wrapping of linesize multiplications
This makes sure that linesize * start_y doesn't overflow, so that
emulated_edge_mc can get back the original value if needed.
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavcodec/mpegvideo_motion.c')
| -rw-r--r-- | libavcodec/mpegvideo_motion.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/mpegvideo_motion.c b/libavcodec/mpegvideo_motion.c index c8109b12d9..cbf200f3f5 100644 --- a/libavcodec/mpegvideo_motion.c +++ b/libavcodec/mpegvideo_motion.c @@ -217,7 +217,8 @@ void mpeg_motion_internal(MpegEncContext *s, { uint8_t *ptr_y, *ptr_cb, *ptr_cr; int dxy, uvdxy, mx, my, src_x, src_y, - uvsrc_x, uvsrc_y, v_edge_pos, uvlinesize, linesize; + uvsrc_x, uvsrc_y, v_edge_pos; + ptrdiff_t uvlinesize, linesize; #if 0 if(s->quarter_sample) |