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mov: parse @PRM and @PRQ metadata tags 

These tags describe the product and quicktime library version respectively.
Originate from Adobe Premier, but some other products use them.
This commit is contained in:
Peter Ross 2012-12-08 17:34:11 +11:00
parent e044cd4123
commit f540851ce3
1 changed files with 15 additions and 0 deletions
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15
libavformat/mov.c
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@ -278,6 +278,17 @@ static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len)
return 0;
}
static int mov_metadata_raw(MOVContext *c, AVIOContext *pb,
unsigned len, const char *key)
{
char *value = av_malloc(len + 1);
if (!value)
return AVERROR(ENOMEM);
avio_read(pb, value, len);
value[len] = 0;
return av_dict_set(&c->fc->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
}
static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
#ifdef MOV_EXPORT_ALL_METADATA
@ -334,6 +345,10 @@ static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
parse = mov_metadata_int8_no_padding; break;
case MKTAG( 'p','g','a','p'): key = "gapless_playback";
parse = mov_metadata_int8_no_padding; break;
case MKTAG( '@','P','R','M'):
return mov_metadata_raw(c, pb, atom.size, "premiere_version");
case MKTAG( '@','P','R','Q'):
return mov_metadata_raw(c, pb, atom.size, "quicktime_version");
}
if (c->itunes_metadata && atom.size > 8) {