gst-libs/gst/tag/: Forward-port some tags stuff from the 0.8 branch. This is mostly the addition of musicbrainz tags ...

Original commit message from CVS:
* gst-libs/gst/tag/Makefile.am:
* gst-libs/gst/tag/gstvorbistag.c: (gst_vorbis_tag_add):
* gst-libs/gst/tag/tag.h:
* gst-libs/gst/tag/tags.c:
(gst_tag_register_musicbrainz_tags_internal),
(gst_tag_register_musicbrainz_tags):
Forward-port some tags stuff from the 0.8 branch. This is
mostly the addition of musicbrainz tags and their mapping
to vorbistags, and a vorbistag mapping of the language tag.

ChangeLog

@@ -1,3 +1,15 @@
+2006-02-05  Tim-Philipp Müller  <tim at centricular dot net>
+
+	* gst-libs/gst/tag/Makefile.am:
+	* gst-libs/gst/tag/gstvorbistag.c: (gst_vorbis_tag_add):
+	* gst-libs/gst/tag/tag.h:
+	* gst-libs/gst/tag/tags.c:
+	(gst_tag_register_musicbrainz_tags_internal),
+	(gst_tag_register_musicbrainz_tags):
+	  Forward-port some tags stuff from the 0.8 branch. This is
+	  mostly the addition of musicbrainz tags and their mapping
+	  to vorbistags, and a vorbistag mapping of the language tag.
+
 2006-02-05  Julien MOUTTE  <julien@moutte.net>
 
 	* gst/playback/gstplaybin.c: (gen_text_element): Fix broken code

gst-libs/gst/tag/Makefile.am

@@ -6,7 +6,7 @@ libgsttaginclude_HEADERS = \
 
 lib_LTLIBRARIES = libgsttag-@GST_MAJORMINOR@.la
 
-libgsttag_@GST_MAJORMINOR@_la_SOURCES = gstvorbistag.c gstid3tag.c
+libgsttag_@GST_MAJORMINOR@_la_SOURCES = gstvorbistag.c gstid3tag.c tags.c
 libgsttag_@GST_MAJORMINOR@_la_CFLAGS = $(GST_CFLAGS)
 libgsttag_@GST_MAJORMINOR@_la_LIBADD = $(GST_LIBS) 
 libgsttag_@GST_MAJORMINOR@_la_LDFLAGS = $(GST_LIB_LDFLAGS) $(GST_ALL_LDFLAGS) $(GST_LT_LDFLAGS)

gst-libs/gst/tag/gstvorbistag.c

@@ -50,6 +50,13 @@ static GstTagEntryMatch tag_matches[] = {
   {GST_TAG_TRACK_PEAK, "REPLAYGAIN_TRACK_PEAK"},
   {GST_TAG_ALBUM_GAIN, "REPLAYGAIN_ALBUM_GAIN"},
   {GST_TAG_ALBUM_PEAK, "REPLAYGAIN_ALBUM_PEAK"},
+  {GST_TAG_MUSICBRAINZ_TRACKID, "MUSICBRAINZ_TRACKID"},
+  {GST_TAG_MUSICBRAINZ_ARTISTID, "MUSICBRAINZ_ARTISTID"},
+  {GST_TAG_MUSICBRAINZ_ALBUMID, "MUSICBRAINZ_ALBUMID"},
+  {GST_TAG_MUSICBRAINZ_ALBUMARTISTID, "MUSICBRAINZ_ALBUMARTISTID"},
+  {GST_TAG_MUSICBRAINZ_TRMID, "MUSICBRAINZ_TRMID"},
+  {GST_TAG_MUSICBRAINZ_SORTNAME, "MUSICBRAINZ_SORTNAME"},
+  {GST_TAG_LANGUAGE_CODE, "LANGUAGE"},
   {NULL, NULL}
 };
 
@@ -146,13 +153,24 @@ gst_vorbis_tag_add (GstTagList * list, const gchar * tag, const gchar * value)
       break;
     }
     case G_TYPE_STRING:{
-      gchar *valid;
+      gchar *valid = NULL;
 
-      if (!g_utf8_validate (value, -1, (const gchar **) &valid)) {
+      /* specialcase for language code */
-        valid = g_strndup (value, valid - value);
+      if (strcmp (tag, "LANGUAGE") == 0) {
-        GST_DEBUG ("Invalid vorbis comment tag, truncated it to %s\n", valid);
+        const gchar *s = strchr (value, '[');
-      } else {
+
-        valid = g_strdup (value);
+        if (s && strchr (s, ']') == s + 4) {
+          valid = g_strndup (s + 1, 3);
+        }
+      }
+
+      if (!valid) {
+        if (!g_utf8_validate (value, -1, (const gchar **) &valid)) {
+          valid = g_strndup (value, valid - value);
+          GST_DEBUG ("Invalid vorbis comment tag, truncated it to %s", valid);
+        } else {
+          valid = g_strdup (value);
+        }
       }
       gst_tag_list_add (list, GST_TAG_MERGE_APPEND, gst_tag, valid, NULL);
       g_free (valid);

gst-libs/gst/tag/tag.h

@@ -25,6 +25,45 @@
 
 G_BEGIN_DECLS
 
+/* Tag names */
+
+/**
+ * GST_TAG_MUSICBRAINZ_TRACKID
+ *
+ * MusicBrainz track ID
+ */
+#define GST_TAG_MUSICBRAINZ_TRACKID	"musicbrainz-trackid"
+/**
+ * GST_TAG_MUSICBRAINZ_ARTISTID
+ *
+ * MusicBrainz artist ID
+ */
+#define GST_TAG_MUSICBRAINZ_ARTISTID	"musicbrainz-artistid"
+/**
+ * GST_TAG_MUSICBRAINZ_ALBUMID
+ *
+ * MusicBrainz album ID
+ */
+#define GST_TAG_MUSICBRAINZ_ALBUMID	"musicbrainz-albumid"
+/**
+ * GST_TAG_MUSICBRAINZ_ALBUMARTISTID
+ *
+ * MusicBrainz album artist ID
+ */
+#define GST_TAG_MUSICBRAINZ_ALBUMARTISTID	"musicbrainz-albumartistid"
+/**
+ * GST_TAG_MUSICBRAINZ_TRMID
+ *
+ * MusicBrainz track TRM ID
+ */
+#define GST_TAG_MUSICBRAINZ_TRMID	"musicbrainz-trmid"
+/**
+ * GST_TAG_MUSICBRAINZ_SORTNAME
+ *
+ * MusicBrainz artist sort name
+ */
+#define GST_TAG_MUSICBRAINZ_SORTNAME	"musicbrainz-sortname"
+
 
 /* functions for vorbis comment manipulation */
 
@@ -56,6 +95,7 @@ GstTagList *            gst_tag_list_new_from_id3v1             (const guint8 *
 G_CONST_RETURN gchar *  gst_tag_from_id3_tag                    (const gchar *          vorbis_tag);
 G_CONST_RETURN gchar *  gst_tag_to_id3_tag                      (const gchar *          gst_tag);
 
+void gst_tag_register_musicbrainz_tags (void);
 
 G_END_DECLS
 

gst-libs/gst/tag/tags.c

@@ -0,0 +1,63 @@
+/* GStreamer
+ * Copyright (C) 2005 Ross Burton <ross@burtonini.com>
+ *
+ * tags.c: Non-core tag registration
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst-i18n-plugin.h>
+#include <gst/gst.h>
+#include "tag.h"
+
+static gpointer
+gst_tag_register_musicbrainz_tags_internal (gpointer unused)
+{
+#ifdef ENABLE_NLS
+  GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
+      LOCALEDIR);
+  bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
+#endif
+
+  gst_tag_register (GST_TAG_MUSICBRAINZ_TRACKID, GST_TAG_FLAG_META,
+      G_TYPE_STRING, _("track ID"), _("MusicBrainz track ID"), NULL);
+  gst_tag_register (GST_TAG_MUSICBRAINZ_ARTISTID, GST_TAG_FLAG_META,
+      G_TYPE_STRING, _("artist ID"), _("MusicBrainz artist ID"), NULL);
+  gst_tag_register (GST_TAG_MUSICBRAINZ_ALBUMID, GST_TAG_FLAG_META,
+      G_TYPE_STRING, _("album ID"), _("MusicBrainz album ID"), NULL);
+  gst_tag_register (GST_TAG_MUSICBRAINZ_ALBUMARTISTID, GST_TAG_FLAG_META,
+      G_TYPE_STRING,
+      _("album artist ID"), _("MusicBrainz album artist ID"), NULL);
+  gst_tag_register (GST_TAG_MUSICBRAINZ_TRMID, GST_TAG_FLAG_META,
+      G_TYPE_STRING, _("track TRM ID"), _("MusicBrainz TRM ID"), NULL);
+  gst_tag_register (GST_TAG_MUSICBRAINZ_SORTNAME, GST_TAG_FLAG_META,
+      G_TYPE_STRING,
+      _("artist sortname"), _("MusicBrainz artist sortname"), NULL);
+
+  return NULL;
+}
+
+void
+gst_tag_register_musicbrainz_tags (void)
+{
+  static GOnce mb_once = G_ONCE_INIT;
+
+  g_once (&mb_once, gst_tag_register_musicbrainz_tags_internal, NULL);
+}