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avcodec/vp56: use av_reallocp_array() and check if allocation failed 

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-09-09 14:48:37 +00:00
parent 7883827cb7
commit 942babd87f
1 changed files with 6 additions and 4 deletions
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10
libavcodec/vp56.c
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@ -475,13 +475,15 @@ static int vp56_size_changed(VP56Context *s)
return -1;
}
s->above_blocks = av_realloc(s->above_blocks,
(4*s->mb_width+6) * sizeof(*s->above_blocks));
s->macroblocks = av_realloc(s->macroblocks,
s->mb_width*s->mb_height*sizeof(*s->macroblocks));
av_reallocp_array(&s->above_blocks, 4*s->mb_width+6,
sizeof(*s->above_blocks));
av_reallocp_array(&s->macroblocks, s->mb_width*s->mb_height,
sizeof(*s->macroblocks));
av_free(s->edge_emu_buffer_alloc);
s->edge_emu_buffer_alloc = av_malloc(16*stride);
s->edge_emu_buffer = s->edge_emu_buffer_alloc;
if (!s->above_blocks || !s->macroblocks || !s->edge_emu_buffer_alloc)
return AVERROR(ENOMEM);
if (s->flip < 0)
s->edge_emu_buffer += 15 * stride;