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vocdec: do not create the stream in read_header()

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The stream parameters are not known until we read a packet, so postpone
creating it until then.
This commit is contained in:
Anton Khirnov 2015-10-18 21:21:55 +02:00
parent 2d0432d918
commit 9f0b6e6827
1 changed files with 8 additions and 5 deletions
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13
libavformat/vocdec.c
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@ -141,7 +141,6 @@ static int voc_read_header(AVFormatContext *s)
VocDecContext *voc = s->priv_data;
AVIOContext *pb = s->pb;
int header_size;
AVStream *st;
avio_skip(pb, 20);
header_size = avio_rl16(pb) - 22;
@ -150,10 +149,8 @@ static int voc_read_header(AVFormatContext *s)
return AVERROR(ENOSYS);
}
avio_skip(pb, header_size);
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
s->ctx_flags |= AVFMTCTX_NOHEADER;
voc->remaining_size = 0;
return 0;
@ -161,6 +158,12 @@ static int voc_read_header(AVFormatContext *s)
static int voc_read_packet(AVFormatContext *s, AVPacket *pkt)
{
if (!s->nb_streams) {
AVStream *st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
}
return ff_voc_get_packet(s, pkt, s->streams[0], 0);
}