metadata/rb-metadata-common.c

   1 /*
   2  *  arch-tag: Implementation of common metadata functions
   3  *
   4  *  Copyright (C) 2003 Colin Walters <walters@verbum.org>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA.
  19  *
  20  */
  21
  22 #include <config.h>
  23
  24 #include "rb-metadata.h"
  25 #include "rb-debug.h"
  26
  27 struct RBMetaDataFieldInfo {
  28         GType type;
  29         const char *name;
  30 };
  31
  32 /*
  33  * Note: the field names are the same as those used by GStreamer.  We
  34  * could have just use the GST_TAG_X defines, but that would suck if we
  35  * ever got a non-GStreamer metadata backend.
  36  */
  37 static struct RBMetaDataFieldInfo field_info[RB_METADATA_FIELD_LAST] = {
  38         /* RB_METADATA_FIELD_TITLE */                   { G_TYPE_STRING, "title" },
  39         /* RB_METADATA_FIELD_ARTIST */                  { G_TYPE_STRING, "artist" },
  40         /* RB_METADATA_FIELD_ALBUM */                   { G_TYPE_STRING, "album" },
  41         /* RB_METADATA_FIELD_DATE */                    { G_TYPE_ULONG, "date" },
  42         /* RB_METADATA_FIELD_GENRE */                   { G_TYPE_STRING, "genre" },
  43         /* RB_METADATA_FIELD_COMMENT */                 { G_TYPE_STRING, "comment" },
  44         /* RB_METADATA_FIELD_TRACK_NUMBER */            { G_TYPE_ULONG, "track-number" },
  45         /* RB_METADATA_FIELD_MAX_TRACK_NUMBER */        { G_TYPE_ULONG, "track-count" },
  46         /* RB_METADATA_FIELD_DISC_NUMBER */             { G_TYPE_ULONG, "album-disc-number" },
  47         /* RB_METADATA_FIELD_MAX_DISC_NUMBER */         { G_TYPE_ULONG, "album-disc-count" },
  48         /* RB_METADATA_FIELD_DESCRIPTION */             { G_TYPE_STRING, "description" },
  49         /* RB_METADATA_FIELD_VERSION */                 { G_TYPE_STRING, "version" },
  50         /* RB_METADATA_FIELD_IRSC */                    { G_TYPE_STRING, "isrc" },
  51         /* RB_METADATA_FIELD_ORGANIZATION */            { G_TYPE_STRING, "organization" },
  52         /* RB_METADATA_FIELD_COPYRIGHT */               { G_TYPE_STRING, "copyright" },
  53         /* RB_METADATA_FIELD_CONTACT */                 { G_TYPE_STRING, "contact" },
  54         /* RB_METADATA_FIELD_LICENSE */                 { G_TYPE_STRING, "license" },
  55         /* RB_METADATA_FIELD_PERFORMER */               { G_TYPE_STRING, "performer" },
  56         /* RB_METADATA_FIELD_DURATION */                { G_TYPE_ULONG, "duration" },
  57         /* RB_METADATA_FIELD_CODEC */                   { G_TYPE_STRING, "codec" },
  58         /* RB_METADATA_FIELD_BITRATE */                 { G_TYPE_ULONG, "bitrate" },
  59         /* RB_METADATA_FIELD_TRACK_GAIN */              { G_TYPE_DOUBLE, "replaygain-track-gain" },
  60         /* RB_METADATA_FIELD_TRACK_PEAK */              { G_TYPE_DOUBLE, "replaygain-track-peak" },
  61         /* RB_METADATA_FIELD_ALBUM_GAIN */              { G_TYPE_DOUBLE, "replaygain-album-gain" },
  62         /* RB_METADATA_FIELD_ALBUM_PEAK */              { G_TYPE_DOUBLE, "replaygain-album-peak" },
  63         /* RB_METADATA_FIELD_LANGUAGE_CODE */           { G_TYPE_STRING, "language-code" },
  64         /* RB_METADATA_FIELD_MUSICBRAINZ-TRACKID */     { G_TYPE_STRING, "musicbrainz-trackid" }
  65 };
  66
  67 GType
  68 rb_metadata_get_field_type (RBMetaDataField field)
  69 {
  70         g_assert (field >= 0 && field < RB_METADATA_FIELD_LAST);
  71         return field_info[field].type;
  72 }
  73
  74 const char *
  75 rb_metadata_get_field_name (RBMetaDataField field)
  76 {
  77         g_assert (field >= 0 && field < RB_METADATA_FIELD_LAST);
  78         return field_info[field].name;
  79 }
  80
  81 GQuark
  82 rb_metadata_error_quark (void)
  83 {
  84         static GQuark quark = 0;
  85         if (!quark)
  86                 quark = g_quark_from_static_string ("rb_metadata_error");
  87
  88         return quark;
  89 }