2 * Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
4 * gsttag.h: Header for tag support
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
26 #include <gst/gststructure.h>
27 #include <gst/gstevent.h>
32 GST_TAG_MERGE_UNDEFINED,
33 GST_TAG_MERGE_REPLACE_ALL,
34 GST_TAG_MERGE_REPLACE,
36 GST_TAG_MERGE_PREPEND,
38 GST_TAG_MERGE_KEEP_ALL,
42 #define GST_TAG_MODE_IS_VALID(mode) (((mode) > GST_TAG_MERGE_UNDEFINED) && ((mode) < GST_TAG_MERGE_COUNT))
45 GST_TAG_FLAG_UNDEFINED,
51 #define GST_TAG_FLAG_IS_VALID(flag) (((flag) > GST_TAG_FLAG_UNDEFINED) && ((flag) < GST_TAG_FLAG_COUNT))
53 typedef GstStructure GstTagList;
54 #define GST_TAG_LIST(x) ((GstTagList *) (x))
55 #define GST_IS_TAG_LIST(x) (gst_is_tag_list (GST_TAG_LIST (x)))
57 typedef void (* GstTagForeachFunc) (const GstTagList *list, const gchar *tag, gpointer user_data);
58 typedef void (* GstTagMergeFunc) (GValue *dest, const GValue *src);
60 /* initialize tagging system */
61 void _gst_tag_initialize (void);
63 void gst_tag_register (gchar * name,
68 GstTagMergeFunc func);
69 /* some default merging functions */
70 void gst_tag_merge_use_first (GValue * dest,
71 const GValue * values);
72 void gst_tag_merge_strings_with_comma (GValue * dest,
73 const GValue * values);
75 /* basic tag support */
76 gboolean gst_tag_exists (const gchar * tag);
77 GType gst_tag_get_type (const gchar * tag);
78 G_CONST_RETURN gchar *
79 gst_tag_get_nick (const gchar * tag);
80 G_CONST_RETURN gchar *
81 gst_tag_get_description (const gchar * tag);
82 gboolean gst_tag_is_fixed (const gchar * tag);
85 GstTagList * gst_tag_list_new (void);
86 gboolean gst_is_tag_list (gconstpointer p);
87 GstTagList * gst_tag_list_copy (const GstTagList * list);
88 void gst_tag_list_insert (GstTagList * into,
89 const GstTagList * from,
90 GstTagMergeMode mode);
91 GstTagList * gst_tag_list_merge (const GstTagList * list1,
92 const GstTagList * list2,
93 GstTagMergeMode mode);
94 void gst_tag_list_free (GstTagList * list);
95 guint gst_tag_list_get_tag_size (const GstTagList * list,
97 void gst_tag_list_add (GstTagList * list,
101 void gst_tag_list_add_values (GstTagList * list,
102 GstTagMergeMode mode,
105 void gst_tag_list_add_valist (GstTagList * list,
106 GstTagMergeMode mode,
109 void gst_tag_list_add_valist_values (GstTagList * list,
110 GstTagMergeMode mode,
113 void gst_tag_list_remove_tag (GstTagList * list,
115 void gst_tag_list_foreach (GstTagList * list,
116 GstTagForeachFunc func,
119 G_CONST_RETURN GValue *
120 gst_tag_list_get_value_index (const GstTagList * list,
123 gboolean gst_tag_list_copy_value (GValue * dest,
124 const GstTagList * list,
127 /* simplifications (FIXME: do we want them?) */
128 gboolean gst_tag_list_get_char (const GstTagList * list,
131 gboolean gst_tag_list_get_char_index (const GstTagList * list,
135 gboolean gst_tag_list_get_uchar (const GstTagList * list,
138 gboolean gst_tag_list_get_uchar_index (const GstTagList * list,
142 gboolean gst_tag_list_get_boolean (const GstTagList * list,
145 gboolean gst_tag_list_get_boolean_index (const GstTagList * list,
149 gboolean gst_tag_list_get_int (const GstTagList * list,
152 gboolean gst_tag_list_get_int_index (const GstTagList * list,
156 gboolean gst_tag_list_get_uint (const GstTagList * list,
159 gboolean gst_tag_list_get_uint_index (const GstTagList * list,
163 gboolean gst_tag_list_get_long (const GstTagList * list,
166 gboolean gst_tag_list_get_long_index (const GstTagList * list,
170 gboolean gst_tag_list_get_ulong (const GstTagList * list,
173 gboolean gst_tag_list_get_ulong_index (const GstTagList * list,
177 gboolean gst_tag_list_get_int64 (const GstTagList * list,
180 gboolean gst_tag_list_get_int64_index (const GstTagList * list,
184 gboolean gst_tag_list_get_uint64 (const GstTagList * list,
187 gboolean gst_tag_list_get_uint64_index (const GstTagList * list,
191 gboolean gst_tag_list_get_float (const GstTagList * list,
194 gboolean gst_tag_list_get_float_index (const GstTagList * list,
198 gboolean gst_tag_list_get_double (const GstTagList * list,
201 gboolean gst_tag_list_get_double_index (const GstTagList * list,
205 gboolean gst_tag_list_get_string (const GstTagList * list,
208 gboolean gst_tag_list_get_string_index (const GstTagList * list,
212 gboolean gst_tag_list_get_pointer (const GstTagList * list,
215 gboolean gst_tag_list_get_pointer_index (const GstTagList * list,
221 GstEvent * gst_event_new_tag (GstTagList * list);
222 GstTagList * gst_event_tag_get_list (GstEvent * tag_event);
225 /* GStreamer core tags (need to be discussed) */
226 #define GST_TAG_TITLE "title"
227 #define GST_TAG_ARTIST "artist"
228 #define GST_TAG_ALBUM "album"
229 #define GST_TAG_DATE "date"
230 #define GST_TAG_GENRE "genre"
231 #define GST_TAG_COMMENT "comment"
232 #define GST_TAG_TRACK_NUMBER "track-number"
233 #define GST_TAG_TRACK_COUNT "track-count"
234 #define GST_TAG_LOCATION "location"
235 #define GST_TAG_DESCRIPTION "description"
236 #define GST_TAG_VERSION "version"
237 #define GST_TAG_ISRC "isrc"
238 #define GST_TAG_ORGANIZATION "organization"
239 #define GST_TAG_COPYRIGHT "copyright"
240 #define GST_TAG_CONTACT "contact"
241 #define GST_TAG_LICENSE "license"
242 #define GST_TAG_PERFORMER "performer"
243 #define GST_TAG_DURATION "duration"
244 #define GST_TAG_CODEC "codec"
245 #define GST_TAG_BITRATE "bitrate"
246 #define GST_TAG_NOMINAL_BITRATE "nominal-bitrate"
247 #define GST_TAG_MINIMUM_BITRATE "minimum-bitrate"
248 #define GST_TAG_MAXIMUM_BITRATE "maximum-bitrate"
249 #define GST_TAG_SERIAL "serial"
250 #define GST_TAG_ENCODER_VERSION "encoder-version"
251 #define GST_TAG_TRACK_GAIN "replaygain-track-gain"
252 #define GST_TAG_TRACK_PEAK "replaygain-track-peak"
253 #define GST_TAG_ALBUM_GAIN "replaygain-album-gain"
254 #define GST_TAG_ALBUM_PEAK "replaygain-album-peak"
259 #endif /* __GST_EVENT_H__ */