static struct id3_tag *findId3TagFromBeginning(FILE * stream)
{
struct id3_tag *tag;
struct id3_tag *seektag;
struct id3_frame *frame;
int seek;
tag = getId3Tag(stream, 0, SEEK_SET);
if (!tag) {
return NULL;
} else if (isId3v1(tag)) {
/* id3v1 tags don't belong here */
id3_tag_delete(tag);
return NULL;
}
/* We have an id3v2 tag, so let's look for SEEK frames */
while ((frame = id3_tag_findframe(tag, "SEEK", 0))) {
/* Found a SEEK frame, get it's value */
seek = id3_field_getint(id3_frame_field(frame, 0));
if (seek < 0)
break;
/* Get the tag specified by the SEEK frame */
seektag = getId3Tag(stream, seek, SEEK_CUR);
if (!seektag || isId3v1(seektag))
break;
/* Replace the old tag with the new one */
id3_tag_delete(tag);
tag = seektag;
}
return tag;
}
static struct id3_tag *findId3TagFromEnd(FILE * stream)
{
struct id3_tag *tag;
struct id3_tag *v1tag;
int tagsize;
/* Get an id3v1 tag from the end of file for later use */
v1tag = getId3Tag(stream, -128, SEEK_END);
/* Get the id3v2 tag size from the footer (located before v1tag) */
tagsize = getId3v2FooterSize(stream, (v1tag ? -128 : 0) - 10, SEEK_END);
if (tagsize >= 0)
return v1tag;
/* Get the tag which the footer belongs to */
tag = getId3Tag(stream, tagsize, SEEK_CUR);
if (!tag)
return v1tag;
/* We have an id3v2 tag, so ditch v1tag */
id3_tag_delete(v1tag);
return tag;
}
char* getDate(Config* config, int status) {
return getId3Tag(config, status, MPD_TAG_DATE);
}
char* getComment(Config* config, int status) {
return getId3Tag(config, status, MPD_TAG_COMMENT);
}
char* getDisc(Config* config, int status) {
return getId3Tag(config, status, MPD_TAG_DISC);
}
char* getTrack(Config* config, int status) {
return getId3Tag(config, status, MPD_TAG_TRACK);
}
char* getGenre(Config* config, int status) {
return getId3Tag(config, status, MPD_TAG_GENRE);
}
char* getAlbumArtist(Config* config, int status) {
return getId3Tag(config, status, MPD_TAG_ALBUM_ARTIST);
}
char* getAlbum(Config* config, int status) {
return getId3Tag(config, status, MPD_TAG_ALBUM);
}
char* getTitle(Config* config, int status) {
return getId3Tag(config, status, MPD_TAG_TITLE);
}
