+static int mov_metadata_trkn(MOVContext *c, ByteIOContext *pb, unsigned len)
+{
+ char buf[16];
+
+ get_be16(pb); // unknown
+ snprintf(buf, sizeof(buf), "%d", get_be16(pb));
+ av_metadata_set(&c->fc->metadata, "track", buf);
+
+ get_be16(pb); // total tracks
+
+ return 0;
+}
+
+static int mov_read_udta_string(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
+{
+#ifdef MOV_EXPORT_ALL_METADATA
+ char tmp_key[5];
+#endif
+ char str[1024], key2[16], language[4] = {0};
+ const char *key = NULL;
+ uint16_t str_size;
+ int (*parse)(MOVContext*, ByteIOContext*, unsigned) = NULL;
+
+ switch (atom.type) {
+ case MKTAG(0xa9,'n','a','m'): key = "title"; break;
+ case MKTAG(0xa9,'a','u','t'):
+ case MKTAG(0xa9,'A','R','T'):
+ case MKTAG(0xa9,'w','r','t'): key = "author"; break;
+ case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
+ case MKTAG(0xa9,'c','m','t'):
+ case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
+ case MKTAG(0xa9,'a','l','b'): key = "album"; break;
+ case MKTAG(0xa9,'d','a','y'): key = "year"; break;
+ case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
+ case MKTAG(0xa9,'t','o','o'):
+ case MKTAG(0xa9,'e','n','c'): key = "muxer"; break;
+ case MKTAG( 't','r','k','n'): key = "track";
+ parse = mov_metadata_trkn; break;
+ }
+
+ if (c->itunes_metadata && atom.size > 8) {
+ int data_size = get_be32(pb);
+ int tag = get_le32(pb);
+ if (tag == MKTAG('d','a','t','a')) {
+ get_be32(pb); // type
+ get_be32(pb); // unknown
+ str_size = data_size - 16;
+ atom.size -= 16;
+ } else return 0;
+ } else if (atom.size > 4 && key && !c->itunes_metadata) {
+ str_size = get_be16(pb); // string length
+ ff_mov_lang_to_iso639(get_be16(pb), language);
+ atom.size -= 4;
+ } else
+ str_size = atom.size;
+
+#ifdef MOV_EXPORT_ALL_METADATA
+ if (!key) {
+ snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
+ key = tmp_key;
+ }
+#endif
+
+ if (!key)
+ return 0;
+ if (atom.size < 0)
+ return -1;
+
+ str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
+
+ if (parse)
+ parse(c, pb, str_size);
+ else {
+ get_buffer(pb, str, str_size);
+ str[str_size] = 0;
+ av_metadata_set(&c->fc->metadata, key, str);
+ if (*language && strcmp(language, "und")) {
+ snprintf(key2, sizeof(key2), "%s-%s", key, language);
+ av_metadata_set(&c->fc->metadata, key2, str);
+ }
+ }
+#ifdef DEBUG_METADATA
+ av_log(c->fc, AV_LOG_DEBUG, "lang \"%3s\" ", language);
+ av_log(c->fc, AV_LOG_DEBUG, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %lld\n",
+ key, str, (char*)&atom.type, str_size, atom.size);
+#endif
+
+ return 0;
+}
+