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fill title, author, copyright and comment fields by parsing udta atom

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Originally committed as revision 9840 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Benoit Fouet 2007-07-31 15:20:36 +00:00
parent 10a7571b09
commit d2ace376b0
1 changed files with 41 additions and 0 deletions
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41
libavformat/mov.c
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@ -1036,6 +1036,46 @@ static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
return mov_read_default(c, pb, atom);
}
static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
{
uint16_t str_size = get_be16(pb); /* string length */;
get_be16(pb); /* skip language */
get_buffer(pb, str, FFMIN(size, str_size));
}
static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
{
uint64_t end = url_ftell(pb) + atom.size;
while (url_ftell(pb) + 8 < end) {
uint32_t tag_size = get_be32(pb);
uint32_t tag = get_le32(pb);
uint64_t next = url_ftell(pb) + tag_size - 8;
switch (tag) {
case MKTAG(0xa9,'n','a','m'):
mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
break;
case MKTAG(0xa9,'w','r','t'):
mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
break;
case MKTAG(0xa9,'c','p','y'):
mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
break;
case MKTAG(0xa9,'i','n','f'):
mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
break;
default:
break;
}
url_fseek(pb, next, SEEK_SET);
}
return 0;
}
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
{
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
@ -1200,6 +1240,7 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */