loadsave.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
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
- /*****************************************************************************
- * loadsave.c : Playlist loading / saving functions
- *****************************************************************************
- * Copyright (C) 1999-2004 the VideoLAN team
- * $Id: 34378730761e03e6e9bf0046f938d27a3f89b2df $
- *
- * Authors: Samuel Hocevar <sam@zoy.org>
- *
- * 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.
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_playlist.h>
- #include <vlc_events.h>
- #include "playlist_internal.h"
- #include "config/configuration.h"
- #include <vlc_charset.h>
- #include <vlc_url.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <unistd.h>
- #include <errno.h>
- int playlist_Export( playlist_t * p_playlist, const char *psz_filename ,
- playlist_item_t *p_export_root,const char *psz_type )
- {
- module_t *p_module;
- playlist_export_t export;
- if( p_export_root == NULL ) return VLC_EGENERIC;
- msg_Dbg( p_playlist, "saving %s to file %s",
- p_export_root->p_input->psz_name, psz_filename );
- /* Prepare the playlist_export_t structure */
- export.psz_filename = psz_filename ? strdup( psz_filename ) : NULL;
- export.p_file = utf8_fopen( psz_filename, "wt" );
- if( export.p_file == NULL )
- {
- msg_Err( p_playlist , "could not create playlist file %s (%m)",
- psz_filename );
- free( export.psz_filename );
- return VLC_EGENERIC;
- }
- export.p_root = p_export_root;
- playlist_Lock( p_playlist );
- p_playlist->p_private = (void *)&export;
- /* And call the module ! All work is done now */
- p_module = module_need( p_playlist, "playlist export", psz_type, true);
- if( !p_module )
- msg_Warn( p_playlist, "exporting playlist failed" );
- else
- module_unneed( p_playlist , p_module );
- p_playlist->p_private = NULL;
- playlist_Unlock( p_playlist );
- /* Clean up */
- fclose( export.p_file );
- free( export.psz_filename );
- return p_module ? VLC_SUCCESS : VLC_ENOOBJ;
- }
- int playlist_Import( playlist_t *p_playlist, const char *psz_file )
- {
- input_item_t *p_input;
- const char *const psz_option = "meta-file";
- char *psz_uri = make_URI( psz_file );
- if( psz_uri == NULL )
- return VLC_EGENERIC;
- p_input = input_item_NewExt( p_playlist, psz_uri, psz_file,
- 1, &psz_option, VLC_INPUT_OPTION_TRUSTED, -1 );
- free( psz_uri );
- playlist_AddInput( p_playlist, p_input, PLAYLIST_APPEND, PLAYLIST_END,
- true, false );
- return input_Read( p_playlist, p_input, true );
- }
- /*****************************************************************************
- * A subitem has been added to the Media Library (Event Callback)
- *****************************************************************************/
- static void input_item_subitem_added( const vlc_event_t * p_event,
- void * user_data )
- {
- playlist_t *p_playlist = user_data;
- input_item_t *p_item = p_event->u.input_item_subitem_added.p_new_child;
- /* playlist_AddInput() can fail, but we have no way to report that ..
- * Any way when it has failed, either the playlist is dying, either OOM */
- playlist_AddInput( p_playlist, p_item, PLAYLIST_APPEND, PLAYLIST_END,
- false, pl_Unlocked );
- }
- int playlist_MLLoad( playlist_t *p_playlist )
- {
- char *psz_datadir;
- char *psz_uri = NULL;
- input_item_t *p_input;
- if( !config_GetInt( p_playlist, "media-library") )
- return VLC_SUCCESS;
- psz_datadir = config_GetUserDataDir();
- if( !psz_datadir ) /* XXX: This should never happen */
- {
- msg_Err( p_playlist, "no data directory, cannot load media library") ;
- return VLC_EGENERIC;
- }
- if( asprintf( &psz_uri, "%s" DIR_SEP "ml.xspf", psz_datadir ) != -1 )
- { /* loosy check for media library file */
- struct stat st;
- int ret = utf8_stat( psz_uri , &st );
- free( psz_uri );
- if( ret )
- {
- free( psz_datadir );
- return VLC_EGENERIC;
- }
- }
- psz_uri = make_URI( psz_datadir );
- free( psz_datadir );
- psz_datadir = psz_uri;
- if( psz_datadir == NULL )
- return VLC_EGENERIC;
- /* Force XSPF demux (psz_datadir was a path, now it is a file URI) */
- if( asprintf( &psz_uri, "file/xspf-open%s/ml.xspf", psz_datadir+4 ) == -1 )
- psz_uri = NULL;
- free( psz_datadir );
- psz_datadir = NULL;
- if( psz_uri == NULL )
- return VLC_ENOMEM;
- const char *const options[1] = { "meta-file", };
- /* that option has to be cleaned in input_item_subitem_added() */
- /* vlc_gc_decref() in the same function */
- p_input = input_item_NewExt( p_playlist, psz_uri, _("Media Library"),
- 1, options, VLC_INPUT_OPTION_TRUSTED, -1 );
- free( psz_uri );
- if( p_input == NULL )
- return VLC_EGENERIC;
- PL_LOCK;
- if( p_playlist->p_ml_onelevel->p_input )
- vlc_gc_decref( p_playlist->p_ml_onelevel->p_input );
- if( p_playlist->p_ml_category->p_input )
- vlc_gc_decref( p_playlist->p_ml_category->p_input );
- p_playlist->p_ml_onelevel->p_input =
- p_playlist->p_ml_category->p_input = p_input;
- /* We save the input at two different place, incref */
- vlc_gc_incref( p_input );
- vlc_gc_incref( p_input );
- vlc_event_attach( &p_input->event_manager, vlc_InputItemSubItemAdded,
- input_item_subitem_added, p_playlist );
- pl_priv(p_playlist)->b_doing_ml = true;
- PL_UNLOCK;
- stats_TimerStart( p_playlist, "ML Load", STATS_TIMER_ML_LOAD );
- input_Read( p_playlist, p_input, true );
- stats_TimerStop( p_playlist,STATS_TIMER_ML_LOAD );
- PL_LOCK;
- pl_priv(p_playlist)->b_doing_ml = false;
- PL_UNLOCK;
- vlc_event_detach( &p_input->event_manager, vlc_InputItemSubItemAdded,
- input_item_subitem_added, p_playlist );
- vlc_gc_decref( p_input );
- return VLC_SUCCESS;
- }
- int playlist_MLDump( playlist_t *p_playlist )
- {
- char *psz_datadir;
- if( !config_GetInt( p_playlist, "media-library") )
- return VLC_SUCCESS;
- psz_datadir = config_GetUserDataDir();
- if( !psz_datadir ) /* XXX: This should never happen */
- {
- msg_Err( p_playlist, "no data directory, cannot save media library") ;
- return VLC_EGENERIC;
- }
- char psz_dirname[ strlen( psz_datadir ) + sizeof( DIR_SEP "ml.xspf")];
- strcpy( psz_dirname, psz_datadir );
- free( psz_datadir );
- if( config_CreateDir( (vlc_object_t *)p_playlist, psz_dirname ) )
- {
- return VLC_EGENERIC;
- }
- strcat( psz_dirname, DIR_SEP "ml.xspf" );
- stats_TimerStart( p_playlist, "ML Dump", STATS_TIMER_ML_DUMP );
- playlist_Export( p_playlist, psz_dirname, p_playlist->p_ml_category,
- "export-xspf" );
- stats_TimerStop( p_playlist, STATS_TIMER_ML_DUMP );
- return VLC_SUCCESS;
- }