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avpacket: Fixing side data copy when src == dst

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Fixing av_packet_copy_side_data to work correctly when source and
destination are the same. This makes sure that there is no memory
leak and double frees.

Signed-off by: Vignesh Venkatasubramanian <vigneshv@google.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Vignesh Venkatasubramanian 2013-09-02 10:42:22 -07:00 committed by Michael Niedermayer
parent 2501f6d3d6
commit fdd1aaf87a
1 changed files with 4 additions and 2 deletions
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6
libavcodec/avpacket.c
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@ -225,8 +225,10 @@ int av_copy_packet_side_data(AVPacket *pkt, AVPacket *src)
int i;
DUP_DATA(pkt->side_data, src->side_data,
src->side_data_elems * sizeof(*src->side_data), 0, ALLOC_MALLOC);
memset(pkt->side_data, 0,
src->side_data_elems * sizeof(*src->side_data));
if (src != pkt) {
memset(pkt->side_data, 0,
src->side_data_elems * sizeof(*src->side_data));
}
for (i = 0; i < src->side_data_elems; i++) {
DUP_DATA(pkt->side_data[i].data, src->side_data[i].data,
src->side_data[i].size, 1, ALLOC_MALLOC);