mirror of https://git.ffmpeg.org/ffmpeg.git
simplify metadata reading
Originally committed as revision 15830 to svn://svn.ffmpeg.org/ffmpeg/trunk
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8f569ed08f
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@ -1366,46 +1366,26 @@ static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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return 0;
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return 0;
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}
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}
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static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
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static int mov_read_udta_string(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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{
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char *str = NULL;
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int size;
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uint16_t str_size = get_be16(pb); /* string length */;
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uint16_t str_size = get_be16(pb); /* string length */;
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switch (atom.type) {
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case MKTAG(0xa9,'n','a','m'):
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str = c->fc->title; size = sizeof(c->fc->title); break;
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case MKTAG(0xa9,'w','r','t'):
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str = c->fc->author; size = sizeof(c->fc->author); break;
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case MKTAG(0xa9,'c','p','y'):
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str = c->fc->copyright; size = sizeof(c->fc->copyright); break;
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case MKTAG(0xa9,'i','n','f'):
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str = c->fc->comment; size = sizeof(c->fc->comment); break;
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}
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if (!str)
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return 0;
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get_be16(pb); /* skip language */
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get_be16(pb); /* skip language */
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get_buffer(pb, str, FFMIN(size, str_size));
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get_buffer(pb, str, FFMIN(size, str_size));
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}
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static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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uint64_t end = url_ftell(pb) + atom.size;
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while (url_ftell(pb) + 8 < end) {
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uint32_t tag_size = get_be32(pb);
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uint32_t tag = get_le32(pb);
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uint64_t next = url_ftell(pb) + tag_size - 8;
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if (tag_size < 8 || next > end) // stop if tag_size is wrong
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break;
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switch (tag) {
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case MKTAG(0xa9,'n','a','m'):
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mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
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break;
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case MKTAG(0xa9,'w','r','t'):
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mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
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break;
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case MKTAG(0xa9,'c','p','y'):
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mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
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break;
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case MKTAG(0xa9,'i','n','f'):
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mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
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break;
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default:
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break;
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}
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url_fseek(pb, next, SEEK_SET);
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}
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return 0;
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return 0;
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}
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}
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@ -1740,11 +1720,15 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
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{ MKTAG('t','r','a','f'), mov_read_default },
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{ MKTAG('t','r','a','f'), mov_read_default },
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{ MKTAG('t','r','e','x'), mov_read_trex },
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{ MKTAG('t','r','e','x'), mov_read_trex },
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{ MKTAG('t','r','u','n'), mov_read_trun },
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{ MKTAG('t','r','u','n'), mov_read_trun },
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{ MKTAG('u','d','t','a'), mov_read_udta },
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{ MKTAG('u','d','t','a'), mov_read_default },
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{ MKTAG('w','a','v','e'), mov_read_wave },
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{ MKTAG('w','a','v','e'), mov_read_wave },
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{ MKTAG('e','s','d','s'), mov_read_esds },
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{ MKTAG('e','s','d','s'), mov_read_esds },
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{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
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{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */
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{ MKTAG('c','m','o','v'), mov_read_cmov },
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{ MKTAG('c','m','o','v'), mov_read_cmov },
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{ MKTAG(0xa9,'n','a','m'), mov_read_udta_string },
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{ MKTAG(0xa9,'w','r','t'), mov_read_udta_string },
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{ MKTAG(0xa9,'c','p','y'), mov_read_udta_string },
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{ MKTAG(0xa9,'i','n','f'), mov_read_udta_string },
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{ 0, NULL }
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{ 0, NULL }
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};
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};
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