vlc_meta.h
资源名称:vlc-1.0.5.zip [点击查看]
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上传日期:2020-07-06
资源大小:29949k
文件大小:8k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * vlc_meta.h: Stream meta-data
- *****************************************************************************
- * Copyright (C) 2004 the VideoLAN team
- * $Id: e5b11b89d3dc285769769d641aa4416da1086b5a $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #ifndef VLC_META_H
- #define VLC_META_H 1
- /**
- * file
- * This file defines functions and structures for stream meta-data in vlc
- *
- */
- #include <vlc_arrays.h>
- typedef enum vlc_meta_type_t
- {
- vlc_meta_Title,
- vlc_meta_Artist,
- vlc_meta_Genre,
- vlc_meta_Copyright,
- vlc_meta_Album,
- vlc_meta_TrackNumber,
- vlc_meta_Description,
- vlc_meta_Rating,
- vlc_meta_Date,
- vlc_meta_Setting,
- vlc_meta_URL,
- vlc_meta_Language,
- vlc_meta_NowPlaying,
- vlc_meta_Publisher,
- vlc_meta_EncodedBy,
- vlc_meta_ArtworkURL,
- vlc_meta_TrackID
- } vlc_meta_type_t;
- #define VLC_META_TYPE_COUNT 17
- /* Returns a localizes string describing the meta */
- VLC_EXPORT(const char *, input_MetaTypeToLocalizedString, ( vlc_meta_type_t meta_type ) );
- #define ITEM_PREPARSED 0x01
- #define ITEM_ARTURL_FETCHED 0x02
- #define ITEM_ART_FETCHED 0x04
- #define ITEM_ART_NOTFOUND 0x08
- struct vlc_meta_t
- {
- char * ppsz_meta[VLC_META_TYPE_COUNT];
- vlc_dictionary_t extra_tags;
- int i_status;
- };
- /* Setters for meta.
- * Warning: Make sure to use the input_item meta setters (defined in vlc_input.h)
- * instead of those one. */
- #define vlc_meta_SetTitle( meta, b ) vlc_meta_Set( meta, vlc_meta_Title, b )
- #define vlc_meta_SetArtist( meta, b ) vlc_meta_Set( meta, vlc_meta_Artist, b )
- #define vlc_meta_SetGenre( meta, b ) vlc_meta_Set( meta, vlc_meta_Genre, b )
- #define vlc_meta_SetCopyright( meta, b ) vlc_meta_Set( meta, vlc_meta_Copyright, b )
- #define vlc_meta_SetAlbum( meta, b ) vlc_meta_Set( meta, vlc_meta_Album, b )
- #define vlc_meta_SetTrackNum( meta, b ) vlc_meta_Set( meta, vlc_meta_TrackNumber, b )
- #define vlc_meta_SetDescription( meta, b ) vlc_meta_Set( meta, vlc_meta_Description, b )
- #define vlc_meta_SetRating( meta, b ) vlc_meta_Set( meta, vlc_meta_Rating, b )
- #define vlc_meta_SetDate( meta, b ) vlc_meta_Set( meta, vlc_meta_Date, b )
- #define vlc_meta_SetSetting( meta, b ) vlc_meta_Set( meta, vlc_meta_Setting, b )
- #define vlc_meta_SetURL( meta, b ) vlc_meta_Set( meta, vlc_meta_URL, b )
- #define vlc_meta_SetLanguage( meta, b ) vlc_meta_Set( meta, vlc_meta_Language, b )
- #define vlc_meta_SetNowPlaying( meta, b ) vlc_meta_Set( meta, vlc_meta_NowPlaying, b )
- #define vlc_meta_SetPublisher( meta, b ) vlc_meta_Set( meta, vlc_meta_Publisher, b )
- #define vlc_meta_SetEncodedBy( meta, b ) vlc_meta_Set( meta, vlc_meta_EncodedBy, b )
- #define vlc_meta_SetArtURL( meta, b ) vlc_meta_Set( meta, vlc_meta_ArtworkURL, b )
- #define vlc_meta_SetTrackID( meta, b ) vlc_meta_Set( meta, vlc_meta_TrackID, b )
- /* Free a dictonary key allocated by strdup() in vlc_meta_AddExtra() */
- static inline void vlc_meta_FreeExtraKey( void *p_data, void *p_obj )
- {
- VLC_UNUSED( p_obj );
- free( p_data );
- }
- static inline void vlc_meta_Set( vlc_meta_t *p_meta, vlc_meta_type_t meta_type, const char *psz_val )
- {
- free( p_meta->ppsz_meta[meta_type] );
- p_meta->ppsz_meta[meta_type] = psz_val ? strdup( psz_val ) : NULL;
- }
- static inline const char *vlc_meta_Get( const vlc_meta_t *p_meta, vlc_meta_type_t meta_type )
- {
- return p_meta->ppsz_meta[meta_type];
- }
- static inline vlc_meta_t *vlc_meta_New( void )
- {
- vlc_meta_t *m = (vlc_meta_t*)malloc( sizeof(*m) );
- if( !m )
- return NULL;
- memset( m->ppsz_meta, 0, sizeof(m->ppsz_meta) );
- m->i_status = 0;
- vlc_dictionary_init( &m->extra_tags, 0 );
- return m;
- }
- static inline void vlc_meta_Delete( vlc_meta_t *m )
- {
- int i;
- for( i = 0; i < VLC_META_TYPE_COUNT ; i++ )
- free( m->ppsz_meta[i] );
- vlc_dictionary_clear( &m->extra_tags, vlc_meta_FreeExtraKey, NULL );
- free( m );
- }
- static inline void vlc_meta_AddExtra( vlc_meta_t *m, const char *psz_name, const char *psz_value )
- {
- char *psz_oldvalue = (char *)vlc_dictionary_value_for_key( &m->extra_tags, psz_name );
- if( psz_oldvalue != kVLCDictionaryNotFound )
- vlc_dictionary_remove_value_for_key( &m->extra_tags, psz_name,
- vlc_meta_FreeExtraKey, NULL );
- vlc_dictionary_insert( &m->extra_tags, psz_name, strdup(psz_value) );
- }
- static inline void vlc_meta_Merge( vlc_meta_t *dst, const vlc_meta_t *src )
- {
- char **ppsz_all_keys;
- int i;
- if( !dst || !src )
- return;
- for( i = 0; i < VLC_META_TYPE_COUNT; i++ )
- {
- if( src->ppsz_meta[i] )
- {
- free( dst->ppsz_meta[i] );
- dst->ppsz_meta[i] = strdup( src->ppsz_meta[i] );
- }
- }
- /* XXX: If speed up are needed, it is possible */
- ppsz_all_keys = vlc_dictionary_all_keys( &src->extra_tags );
- for( i = 0; ppsz_all_keys && ppsz_all_keys[i]; i++ )
- {
- /* Always try to remove the previous value */
- vlc_dictionary_remove_value_for_key( &dst->extra_tags, ppsz_all_keys[i], vlc_meta_FreeExtraKey, NULL );
- void *p_value = vlc_dictionary_value_for_key( &src->extra_tags, ppsz_all_keys[i] );
- vlc_dictionary_insert( &dst->extra_tags, ppsz_all_keys[i], strdup( (const char*)p_value ) );
- free( ppsz_all_keys[i] );
- }
- free( ppsz_all_keys );
- }
- #define VLC_META_TITLE input_MetaTypeToLocalizedString( vlc_meta_Title )
- #define VLC_META_ARTIST input_MetaTypeToLocalizedString( vlc_meta_Artist )
- #define VLC_META_GENRE input_MetaTypeToLocalizedString( vlc_meta_Genre )
- #define VLC_META_COPYRIGHT input_MetaTypeToLocalizedString( vlc_meta_Copyright )
- #define VLC_META_ALBUM input_MetaTypeToLocalizedString( vlc_meta_Album )
- #define VLC_META_TRACK_NUMBER input_MetaTypeToLocalizedString( vlc_meta_TrackNumber )
- #define VLC_META_DESCRIPTION input_MetaTypeToLocalizedString( vlc_meta_Description )
- #define VLC_META_RATING input_MetaTypeToLocalizedString( vlc_meta_Rating )
- #define VLC_META_DATE input_MetaTypeToLocalizedString( vlc_meta_Date )
- #define VLC_META_SETTING input_MetaTypeToLocalizedString( vlc_meta_Setting )
- #define VLC_META_URL input_MetaTypeToLocalizedString( vlc_meta_URL )
- #define VLC_META_LANGUAGE input_MetaTypeToLocalizedString( vlc_meta_Language )
- #define VLC_META_NOW_PLAYING input_MetaTypeToLocalizedString( vlc_meta_NowPlaying )
- #define VLC_META_PUBLISHER input_MetaTypeToLocalizedString( vlc_meta_Publisher )
- #define VLC_META_ENCODED_BY input_MetaTypeToLocalizedString( vlc_meta_EncodedBy )
- #define VLC_META_ART_URL input_MetaTypeToLocalizedString( vlc_meta_ArtworkURL )
- #define VLC_META_TRACKID input_MetaTypeToLocalizedString( vlc_meta_TrackID )
- enum {
- ALBUM_ART_WHEN_ASKED,
- ALBUM_ART_WHEN_PLAYED,
- ALBUM_ART_ALL
- };
- struct meta_export_t
- {
- input_item_t *p_item;
- const char *psz_file;
- };
- #endif