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avformat/matroskadec: Don't copy attached pictures 

This commit replaces copying attached pictures by using references to
the already existing buffers.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2019-05-17 00:29:52 +02:00 committed by James Almer
parent 1beeb3b877
commit 07d4056052
1 changed files with 10 additions and 6 deletions
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16
libavformat/matroskadec.c
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@ -2715,15 +2715,19 @@ static int matroska_read_header(AVFormatContext *s)
attachments[j].stream = st;
if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
AVPacket *pkt = &st->attached_pic;
st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
av_init_packet(&st->attached_pic);
if ((res = av_new_packet(&st->attached_pic, attachments[j].bin.size)) < 0)
return res;
memcpy(st->attached_pic.data, attachments[j].bin.data, attachments[j].bin.size);
st->attached_pic.stream_index = st->index;
st->attached_pic.flags |= AV_PKT_FLAG_KEY;
av_init_packet(pkt);
pkt->buf = av_buffer_ref(attachments[j].bin.buf);
if (!pkt->buf)
return AVERROR(ENOMEM);
pkt->data = attachments[j].bin.data;
pkt->size = attachments[j].bin.size;
pkt->stream_index = st->index;
pkt->flags |= AV_PKT_FLAG_KEY;
} else {
st->codecpar->codec_type = AVMEDIA_TYPE_ATTACHMENT;
if (ff_alloc_extradata(st->codecpar, attachments[j].bin.size))