/* GStreamer * Copyright (C) 2003 Benjamin Otte * * gsttag.h: Header for tag support * * 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. */ #ifndef __GST_TAG_H__ #define __GST_TAG_H__ #include #include G_BEGIN_DECLS typedef enum { GST_TAG_MERGE_UNDEFINED, GST_TAG_MERGE_REPLACE_ALL, GST_TAG_MERGE_REPLACE, GST_TAG_MERGE_APPEND, GST_TAG_MERGE_PREPEND, GST_TAG_MERGE_KEEP, GST_TAG_MERGE_KEEP_ALL, /* add more */ GST_TAG_MERGE_COUNT } GstTagMergeMode; #define GST_TAG_MODE_IS_VALID(mode) (((mode) > GST_TAG_MERGE_UNDEFINED) && ((mode) < GST_TAG_MERGE_COUNT)) typedef enum { GST_TAG_FLAG_UNDEFINED, GST_TAG_FLAG_META, GST_TAG_FLAG_ENCODED, GST_TAG_FLAG_DECODED, GST_TAG_FLAG_COUNT } GstTagFlag; #define GST_TAG_FLAG_IS_VALID(flag) (((flag) > GST_TAG_FLAG_UNDEFINED) && ((flag) < GST_TAG_FLAG_COUNT)) typedef GstStructure GstTagList; #define GST_TAG_LIST(x) ((GstTagList *) (x)) #define GST_IS_TAG_LIST(x) (gst_is_tag_list (GST_TAG_LIST (x))) typedef void (* GstTagForeachFunc) (const GstTagList *list, const gchar *tag, gpointer user_data); typedef void (* GstTagMergeFunc) (GValue *dest, const GValue *src); /* initialize tagging system */ void _gst_tag_initialize (void); void gst_tag_register (gchar * name, GstTagFlag flag, GType type, gchar * nick, gchar * blurb, GstTagMergeFunc func); /* some default merging functions */ void gst_tag_merge_use_first (GValue * dest, const GValue * src); void gst_tag_merge_strings_with_comma (GValue * dest, const GValue * src); /* basic tag support */ gboolean gst_tag_exists (const gchar * tag); GType gst_tag_get_type (const gchar * tag); G_CONST_RETURN gchar * gst_tag_get_nick (const gchar * tag); G_CONST_RETURN gchar * gst_tag_get_description (const gchar * tag); gboolean gst_tag_is_fixed (const gchar * tag); /* tag lists */ GstTagList * gst_tag_list_new (void); gboolean gst_is_tag_list (gconstpointer p); GstTagList * gst_tag_list_copy (const GstTagList * list); void gst_tag_list_insert (GstTagList * into, const GstTagList * from, GstTagMergeMode mode); GstTagList * gst_tag_list_merge (const GstTagList * list1, const GstTagList * list2, GstTagMergeMode mode); void gst_tag_list_free (GstTagList * list); guint gst_tag_list_get_tag_size (const GstTagList * list, const gchar * tag); void gst_tag_list_add (GstTagList * list, GstTagMergeMode mode, const gchar * tag, ...); void gst_tag_list_add_values (GstTagList * list, GstTagMergeMode mode, const gchar * tag, ...); void gst_tag_list_add_valist (GstTagList * list, GstTagMergeMode mode, const gchar * tag, va_list var_args); void gst_tag_list_add_valist_values (GstTagList * list, GstTagMergeMode mode, const gchar * tag, va_list var_args); void gst_tag_list_remove_tag (GstTagList * list, const gchar * tag); void gst_tag_list_foreach (GstTagList * list, GstTagForeachFunc func, gpointer user_data); G_CONST_RETURN GValue * gst_tag_list_get_value_index (const GstTagList * list, const gchar * tag, guint index); gboolean gst_tag_list_copy_value (GValue * dest, const GstTagList * list, const gchar * tag); /* simplifications (FIXME: do we want them?) */ gboolean gst_tag_list_get_char (const GstTagList * list, const gchar * tag, gchar * value); gboolean gst_tag_list_get_char_index (const GstTagList * list, const gchar * tag, guint index, gchar * value); gboolean gst_tag_list_get_uchar (const GstTagList * list, const gchar * tag, guchar * value); gboolean gst_tag_list_get_uchar_index (const GstTagList * list, const gchar * tag, guint index, guchar * value); gboolean gst_tag_list_get_boolean (const GstTagList * list, const gchar * tag, gboolean * value); gboolean gst_tag_list_get_boolean_index (const GstTagList * list, const gchar * tag, guint index, gboolean * value); gboolean gst_tag_list_get_int (const GstTagList * list, const gchar * tag, gint * value); gboolean gst_tag_list_get_int_index (const GstTagList * list, const gchar * tag, guint index, gint * value); gboolean gst_tag_list_get_uint (const GstTagList * list, const gchar * tag, guint * value); gboolean gst_tag_list_get_uint_index (const GstTagList * list, const gchar * tag, guint index, guint * value); gboolean gst_tag_list_get_long (const GstTagList * list, const gchar * tag, glong * value); gboolean gst_tag_list_get_long_index (const GstTagList * list, const gchar * tag, guint index, glong * value); gboolean gst_tag_list_get_ulong (const GstTagList * list, const gchar * tag, gulong * value); gboolean gst_tag_list_get_ulong_index (const GstTagList * list, const gchar * tag, guint index, gulong * value); gboolean gst_tag_list_get_int64 (const GstTagList * list, const gchar * tag, gint64 * value); gboolean gst_tag_list_get_int64_index (const GstTagList * list, const gchar * tag, guint index, gint64 * value); gboolean gst_tag_list_get_uint64 (const GstTagList * list, const gchar * tag, guint64 * value); gboolean gst_tag_list_get_uint64_index (const GstTagList * list, const gchar * tag, guint index, guint64 * value); gboolean gst_tag_list_get_float (const GstTagList * list, const gchar * tag, gfloat * value); gboolean gst_tag_list_get_float_index (const GstTagList * list, const gchar * tag, guint index, gfloat * value); gboolean gst_tag_list_get_double (const GstTagList * list, const gchar * tag, gdouble * value); gboolean gst_tag_list_get_double_index (const GstTagList * list, const gchar * tag, guint index, gdouble * value); gboolean gst_tag_list_get_string (const GstTagList * list, const gchar * tag, gchar ** value); gboolean gst_tag_list_get_string_index (const GstTagList * list, const gchar * tag, guint index, gchar ** value); gboolean gst_tag_list_get_pointer (const GstTagList * list, const gchar * tag, gpointer * value); gboolean gst_tag_list_get_pointer_index (const GstTagList * list, const gchar * tag, guint index, gpointer * value); /* tag events */ GstEvent * gst_event_new_tag (GstTagList * list); GstTagList * gst_event_tag_get_list (GstEvent * tag_event); /* GStreamer core tags (need to be discussed) */ #define GST_TAG_TITLE "title" #define GST_TAG_ARTIST "artist" #define GST_TAG_ALBUM "album" #define GST_TAG_DATE "date" #define GST_TAG_GENRE "genre" #define GST_TAG_COMMENT "comment" #define GST_TAG_TRACK_NUMBER "track-number" #define GST_TAG_TRACK_COUNT "track-count" #define GST_TAG_LOCATION "location" #define GST_TAG_DESCRIPTION "description" #define GST_TAG_VERSION "version" #define GST_TAG_ISRC "isrc" #define GST_TAG_ORGANIZATION "organization" #define GST_TAG_COPYRIGHT "copyright" #define GST_TAG_CONTACT "contact" #define GST_TAG_LICENSE "license" #define GST_TAG_PERFORMER "performer" #define GST_TAG_DURATION "duration" #define GST_TAG_CODEC "codec" #define GST_TAG_BITRATE "bitrate" #define GST_TAG_NOMINAL_BITRATE "nominal-bitrate" #define GST_TAG_MINIMUM_BITRATE "minimum-bitrate" #define GST_TAG_MAXIMUM_BITRATE "maximum-bitrate" #define GST_TAG_SERIAL "serial" #define GST_TAG_ENCODER "encoder" #define GST_TAG_ENCODER_VERSION "encoder-version" #define GST_TAG_TRACK_GAIN "replaygain-track-gain" #define GST_TAG_TRACK_PEAK "replaygain-track-peak" #define GST_TAG_ALBUM_GAIN "replaygain-album-gain" #define GST_TAG_ALBUM_PEAK "replaygain-album-peak" G_END_DECLS #endif /* __GST_EVENT_H__ */