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matroskadec: use av_grow_packet in merge_packets.

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It ensures that the packet is properly padded
and makes the code simpler.

Fixes trac ticket #1223.
This commit is contained in:
Nicolas George 2012-04-16 18:02:02 +02:00
parent 1a65d50ee7
commit dcd207c4cb
1 changed files with 4 additions and 6 deletions
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10
libavformat/matroskadec.c
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@ -1126,12 +1126,10 @@ static void matroska_fix_ass_packet(MatroskaDemuxContext *matroska,
static int matroska_merge_packets(AVPacket *out, AVPacket *in)
{
void *newdata = av_realloc(out->data, out->size+in->size);
if (!newdata)
return AVERROR(ENOMEM);
out->data = newdata;
memcpy(out->data+out->size, in->data, in->size);
out->size += in->size;
int ret = av_grow_packet(out, in->size);
if (ret < 0)
return ret;
memcpy(out->data + out->size - in->size, in->data, in->size);
av_destruct_packet(in);
av_free(in);
return 0;