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xmv: check audio track parameters validity. 

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
This commit is contained in:
Anton Khirnov 2013-03-28 10:33:02 +01:00
parent b88f902125
commit d1016dccdc
1 changed files with 22 additions and 10 deletions
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32
libavformat/xmv.c
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@ -126,6 +126,16 @@ static int xmv_probe(AVProbeData *p)
return 0;
}
static int xmv_read_close(AVFormatContext *s)
{
XMVDemuxContext *xmv = s->priv_data;
av_free(xmv->audio);
av_free(xmv->audio_tracks);
return 0;
}
static int xmv_read_header(AVFormatContext *s)
{
XMVDemuxContext *xmv = s->priv_data;
@ -135,6 +145,7 @@ static int xmv_read_header(AVFormatContext *s)
uint32_t file_version;
uint32_t this_packet_size;
uint16_t audio_track;
int ret;
avio_skip(pb, 4); /* Next packet size */
@ -211,6 +222,13 @@ static int xmv_read_header(AVFormatContext *s)
av_log(s, AV_LOG_WARNING, "Unsupported 5.1 ADPCM audio stream "
"(0x%04X)\n", track->flags);
if (!track->channels || !track->sample_rate) {
av_log(s, AV_LOG_ERROR, "Invalid parameters for audio track %d.\n",
audio_track);
ret = AVERROR_INVALIDDATA;
goto fail;
}
ast = avformat_new_stream(s, NULL);
if (!ast)
return AVERROR(ENOMEM);
@ -239,6 +257,10 @@ static int xmv_read_header(AVFormatContext *s)
xmv->stream_count = xmv->audio_track_count + 1;
return 0;
fail:
xmv_read_close(s);
return ret;
}
static void xmv_read_extradata(uint8_t *extradata, AVIOContext *pb)
@ -546,16 +568,6 @@ static int xmv_read_packet(AVFormatContext *s,
return 0;
}
static int xmv_read_close(AVFormatContext *s)
{
XMVDemuxContext *xmv = s->priv_data;
av_free(xmv->audio);
av_free(xmv->audio_tracks);
return 0;
}
AVInputFormat ff_xmv_demuxer = {
.name = "xmv",
.long_name = NULL_IF_CONFIG_SMALL("Microsoft XMV"),