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tag_id3: added support for the UFID frame

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If the UFID frame's owner is "http://musicbrainz.org", assume its
value is the MusicBrainz track id.
This commit is contained in:
Max Kellermann 2009-05-06 14:42:07 +02:00
parent feae8b8f68
commit 0935d85c69
1 changed files with 40 additions and 0 deletions
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40
src/tag_id3.c
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@ -285,6 +285,45 @@ tag_id3_import_musicbrainz(struct tag *mpd_tag, struct id3_tag *id3_tag)
}
}
/**
* Imports the MusicBrainz TrackId from the UFID tag.
*/
static void
tag_id3_import_ufid(struct tag *mpd_tag, struct id3_tag *id3_tag)
{
for (unsigned i = 0;; ++i) {
const struct id3_frame *frame;
union id3_field *field;
const id3_latin1_t *name;
const id3_byte_t *value;
id3_length_t length;
frame = id3_tag_findframe(id3_tag, "UFID", i);
if (frame == NULL)
break;
field = id3_frame_field(frame, 0);
if (field == NULL)
continue;
name = id3_field_getlatin1(field);
if (name == NULL ||
strcmp((const char *)name, "http://musicbrainz.org") != 0)
continue;
field = id3_frame_field(frame, 1);
if (field == NULL)
continue;
value = id3_field_getbinarydata(field, &length);
if (value == NULL || length == 0)
continue;
tag_add_item_n(mpd_tag, TAG_MUSICBRAINZ_TRACKID,
(const char*)value, length);
}
}
struct tag *tag_id3_import(struct id3_tag * tag)
{
struct tag *ret = tag_new();
@ -305,6 +344,7 @@ struct tag *tag_id3_import(struct id3_tag * tag)
getID3Info(tag, ID3_FRAME_DISC, TAG_ITEM_DISC, ret);
tag_id3_import_musicbrainz(ret, tag);
tag_id3_import_ufid(ret, tag);
if (tag_is_empty(ret)) {
tag_free(ret);