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Code Issues Releases Activity

mov: Only touch extradata in mov_read_extradata() if codec_id is what we expect

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Extradata should only be parsed from the avss, fiel, jp2h and alac atoms for
AVS, MJPEG, Motion JPEG 2000 and ALAC respectively.
This also fixes the mov demuxer coming up with bogus extradata for some
AVC-Intra samples due to the presence of fiel atoms.
This commit is contained in:
Tomas Härdin 2011-09-28 10:34:51 +02:00 committed by Baptiste Coudurier
parent c8b835954a
commit e571305a71
1 changed files with 31 additions and 5 deletions
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36
libavformat/mov.c
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@ -756,7 +756,8 @@ static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
}
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom,
enum CodecID codec_id)
{
AVStream *st;
uint64_t size;
@ -765,6 +766,10 @@ static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
if (c->fc->nb_streams < 1) // will happen with jp2 files
return 0;
st= c->fc->streams[c->fc->nb_streams-1];
if (st->codec->codec_id != codec_id)
return 0; /* unexpected codec_id - don't mess with extradata */
size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
return -1;
@ -780,6 +785,27 @@ static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
return 0;
}
/* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */
static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
return mov_read_extradata(c, pb, atom, CODEC_ID_ALAC);
}
static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
return mov_read_extradata(c, pb, atom, CODEC_ID_AVS);
}
static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
return mov_read_extradata(c, pb, atom, CODEC_ID_MJPEG);
}
static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
return mov_read_extradata(c, pb, atom, CODEC_ID_JPEG2000);
}
static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
AVStream *st;
@ -2251,7 +2277,7 @@ static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
}
static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG('a','v','s','s'), mov_read_extradata },
{ MKTAG('a','v','s','s'), mov_read_avss },
{ MKTAG('c','h','p','l'), mov_read_chpl },
{ MKTAG('c','o','6','4'), mov_read_stco },
{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
@ -2260,12 +2286,12 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG('e','d','t','s'), mov_read_default },
{ MKTAG('e','l','s','t'), mov_read_elst },
{ MKTAG('e','n','d','a'), mov_read_enda },
{ MKTAG('f','i','e','l'), mov_read_extradata },
{ MKTAG('f','i','e','l'), mov_read_fiel },
{ MKTAG('f','t','y','p'), mov_read_ftyp },
{ MKTAG('g','l','b','l'), mov_read_glbl },
{ MKTAG('h','d','l','r'), mov_read_hdlr },
{ MKTAG('i','l','s','t'), mov_read_ilst },
{ MKTAG('j','p','2','h'), mov_read_extradata },
{ MKTAG('j','p','2','h'), mov_read_jp2h },
{ MKTAG('m','d','a','t'), mov_read_mdat },
{ MKTAG('m','d','h','d'), mov_read_mdhd },
{ MKTAG('m','d','i','a'), mov_read_default },
@ -2276,7 +2302,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG('m','v','e','x'), mov_read_default },
{ MKTAG('m','v','h','d'), mov_read_mvhd },
{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */
{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */
{ MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */
{ MKTAG('a','v','c','C'), mov_read_glbl },
{ MKTAG('p','a','s','p'), mov_read_pasp },
{ MKTAG('s','t','b','l'), mov_read_default },