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Add new API to libgsttag: gst_tag_from_id3_user_tag().

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Original commit message from CVS:
* docs/libs/gst-plugins-base-libs-sections.txt:
* gst-libs/gst/tag/gstid3tag.c: (gst_tag_from_id3_user_tag):
* gst-libs/gst/tag/tag.h:
Add new API to libgsttag: gst_tag_from_id3_user_tag().
This commit is contained in:
Tim-Philipp Müller 2006-03-12 13:47:22 +00:00
parent a1ffe9cbbc
commit 7762b252a3
4 changed files with 80 additions and 22 deletions
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7
ChangeLog
View file

@ -1,3 +1,10 @@
2006-03-12 Tim-Philipp Müller <tim at centricular dot net>
* docs/libs/gst-plugins-base-libs-sections.txt:
* gst-libs/gst/tag/gstid3tag.c: (gst_tag_from_id3_user_tag):
* gst-libs/gst/tag/tag.h:
Add new API to libgsttag: gst_tag_from_id3_user_tag().
2006-03-11 Tim-Philipp Müller <tim at centricular dot net>
* gst/typefind/gsttypefindfunctions.c: (plugin_init):

1
docs/libs/gst-plugins-base-libs-sections.txt
View file

@ -151,6 +151,7 @@ gst_tag_id3_genre_count
gst_tag_id3_genre_get
gst_tag_list_new_from_id3v1
gst_tag_from_id3_tag
gst_tag_from_id3_user_tag
gst_tag_to_id3_tag
</SECTION>

92
gst-libs/gst/tag/gstid3tag.c
View file

@ -208,13 +208,13 @@ static GstTagEntryMatch tag_matches[] = {
};
/**
* gst_tag_from_id3_tag:
* @id3_tag: ID3v2 tag to convert to GStreamer tag
*
* Looks up the GStreamer tag for a ID3v2 tag.
*
* Returns: The corresponding GStreamer tag or NULL if none exists.
*/
* gst_tag_from_id3_tag:
* @id3_tag: ID3v2 tag to convert to GStreamer tag
*
* Looks up the GStreamer tag for a ID3v2 tag.
*
* Returns: The corresponding GStreamer tag or NULL if none exists.
*/
G_CONST_RETURN gchar *
gst_tag_from_id3_tag (const gchar * id3_tag)
{
@ -235,14 +235,62 @@ gst_tag_from_id3_tag (const gchar * id3_tag)
return NULL;
}
static GstTagEntryMatch user_tag_matches[] = {
/* musicbrainz identifiers being used in the real world (foobar2000) */
{GST_TAG_MUSICBRAINZ_ARTISTID, "TXXX|musicbrainz_artistid"},
{GST_TAG_MUSICBRAINZ_ALBUMID, "TXXX|musicbrainz_albumid"},
{GST_TAG_MUSICBRAINZ_ALBUMARTISTID, "TXXX|musicbrainz_albumartistid"},
{GST_TAG_MUSICBRAINZ_TRMID, "TXXX|musicbrainz_trmid"},
/* musicbrainz identifiers according to spec no one pays
* attention to (http://musicbrainz.org/docs/specs/metadata_tags.html) */
{GST_TAG_MUSICBRAINZ_ARTISTID, "TXXX|MusicBrainz Artist Id"},
{GST_TAG_MUSICBRAINZ_ALBUMID, "TXXX|MusicBrainz Album Id"},
{GST_TAG_MUSICBRAINZ_ALBUMARTISTID, "TXXX|MusicBrainz Album Artist Id"},
{GST_TAG_MUSICBRAINZ_TRMID, "TXXX|MusicBrainz TRM Id"},
{NULL, NULL}
};
/**
* gst_tag_to_id3_tag:
* @gst_tag: GStreamer tag to convert to vorbiscomment tag
*
* Looks up the ID3v2 tag for a GStreamer tag.
*
* Returns: The corresponding ID3v2 tag or NULL if none exists.
*/
* gst_tag_from_id3_user_tag:
* @type: the type of ID3v2 user tag (e.g. "TXXX" or "UDIF")
* @id3_user_tag: ID3v2 user tag to convert to GStreamer tag
*
* Looks up the GStreamer tag for an ID3v2 user tag (e.g. description in
* TXXX frame or owner in UFID frame).
*
* Returns: The corresponding GStreamer tag or NULL if none exists.
*/
G_CONST_RETURN gchar *
gst_tag_from_id3_user_tag (const gchar * type, const gchar * id3_user_tag)
{
int i = 0;
g_return_val_if_fail (type != NULL && strlen (type) == 4, NULL);
g_return_val_if_fail (id3_user_tag != NULL, NULL);
for (i = 0; i < G_N_ELEMENTS (user_tag_matches); ++i) {
if (strncmp (type, user_tag_matches[i].original_tag, 4) == 0 &&
strcmp (id3_user_tag, user_tag_matches[i].original_tag + 5) == 0) {
GST_LOG ("Mapped ID3v2 user tag '%s' to GStreamer tag '%s'",
user_tag_matches[i].original_tag, user_tag_matches[i].gstreamer_tag);
return user_tag_matches[i].gstreamer_tag;
}
}
GST_INFO ("Cannot map ID3v2 user tag '%s' of type '%s' to GStreamer tag",
id3_user_tag, type);
return NULL;
}
/**
* gst_tag_to_id3_tag:
* @gst_tag: GStreamer tag to convert to vorbiscomment tag
*
* Looks up the ID3v2 tag for a GStreamer tag.
*
* Returns: The corresponding ID3v2 tag or NULL if none exists.
*/
G_CONST_RETURN gchar *
gst_tag_to_id3_tag (const gchar * gst_tag)
{
@ -330,14 +378,14 @@ beach:
}
/**
* gst_tag_list_new_from_id3v1:
* @data: 128 bytes of data containing the ID3v1 tag
*
* Parses the data containing an ID3v1 tag and returns a #GstTagList from the
* parsed data.
*
* Returns: A new tag list or NULL if the data was not an ID3v1 tag.
*/
* gst_tag_list_new_from_id3v1:
* @data: 128 bytes of data containing the ID3v1 tag
*
* Parses the data containing an ID3v1 tag and returns a #GstTagList from the
* parsed data.
*
* Returns: A new tag list or NULL if the data was not an ID3v1 tag.
*/
GstTagList *
gst_tag_list_new_from_id3v1 (const guint8 * data)
{

2
gst-libs/gst/tag/tag.h
View file

@ -112,6 +112,8 @@ G_CONST_RETURN gchar * gst_tag_id3_genre_get (const guint
GstTagList * gst_tag_list_new_from_id3v1 (const guint8 * data);
G_CONST_RETURN gchar * gst_tag_from_id3_tag (const gchar * id3_tag);
G_CONST_RETURN gchar * gst_tag_from_id3_user_tag (const gchar * type,
const gchar * id3_user_tag);
G_CONST_RETURN gchar * gst_tag_to_id3_tag (const gchar * gst_tag);
void gst_tag_register_musicbrainz_tags (void);