git.sesse.net Git - vlc/blob - src/playlist/loadsave.c

   1 /*****************************************************************************
   2  * loadsave.c : Playlist loading / saving functions
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23 #ifdef HAVE_CONFIG_H
  24 # include "config.h"
  25 #endif
  26
  27 #include <vlc/vlc.h>
  28 #include <vlc_playlist.h>
  29 #include <vlc_events.h>
  30 #include "playlist_internal.h"
  31 #include "config/configuration.h"
  32 #include <vlc_charset.h>
  33
  34 #include <sys/types.h>
  35 #include <sys/stat.h>
  36 #include <unistd.h>
  37 #include <errno.h>
  38
  39 int playlist_Export( playlist_t * p_playlist, const char *psz_filename ,
  40                      playlist_item_t *p_export_root,const char *psz_type )
  41 {
  42     module_t *p_module;
  43     playlist_export_t *p_export;
  44
  45     if( p_export_root == NULL ) return VLC_EGENERIC;
  46
  47     msg_Info( p_playlist, "saving %s to file %s",
  48                     p_export_root->p_input->psz_name, psz_filename );
  49
  50     /* Prepare the playlist_export_t structure */
  51     p_export = (playlist_export_t *)malloc( sizeof(playlist_export_t) );
  52     if( !p_export)
  53     {
  54         msg_Err( p_playlist, "out of memory" );
  55         return VLC_ENOMEM;
  56     }
  57     p_export->psz_filename = NULL;
  58     if ( psz_filename )
  59         p_export->psz_filename = strdup( psz_filename );
  60     p_export->p_file = utf8_fopen( psz_filename, "wt" );
  61     if( !p_export->p_file )
  62     {
  63         msg_Err( p_playlist , "could not create playlist file %s (%m)",
  64                  psz_filename );
  65         return VLC_EGENERIC;
  66     }
  67
  68     p_export->p_root = p_export_root;
  69
  70     /* Lock the playlist */
  71     vlc_mutex_lock( &p_playlist->object_lock );
  72     p_playlist->p_private = (void *)p_export;
  73
  74     /* And call the module ! All work is done now */
  75     p_module = module_Need( p_playlist, "playlist export", psz_type, VLC_TRUE);
  76     if( !p_module )
  77     {
  78         msg_Warn( p_playlist, "exporting playlist failed" );
  79         vlc_mutex_unlock( &p_playlist->object_lock );
  80         return VLC_ENOOBJ;
  81     }
  82     module_Unneed( p_playlist , p_module );
  83
  84     /* Clean up */
  85     fclose( p_export->p_file );
  86     free( p_export->psz_filename );
  87     free ( p_export );
  88     p_playlist->p_private = NULL;
  89     vlc_mutex_unlock( &p_playlist->object_lock );
  90
  91     return VLC_SUCCESS;
  92 }
  93
  94 /*****************************************************************************
  95  * A subitem has been added to the Media Library (Event Callback)
  96  *****************************************************************************/
  97 static void input_item_subitem_added( const vlc_event_t * p_event,
  98                                       void * user_data )
  99 {
 100     playlist_t *p_playlist = user_data;
 101     input_item_t *p_item = p_event->u.input_item_subitem_added.p_new_child;
 102
 103     /* playlist_AddInput() can fail, but we have no way to report that ..
 104      * Any way when it has failed, either the playlist is dying, either OOM */
 105     playlist_AddInput( p_playlist, p_item, PLAYLIST_APPEND, PLAYLIST_END,
 106             VLC_FALSE, VLC_FALSE );
 107 }
 108
 109 int playlist_MLLoad( playlist_t *p_playlist )
 110 {
 111     const char *psz_datadir = p_playlist->p_libvlc->psz_datadir;
 112     char *psz_uri = NULL;
 113     input_item_t *p_input;
 114
 115     if( !config_GetInt( p_playlist, "media-library") ) return VLC_SUCCESS;
 116     if( !psz_datadir ) /* XXX: This should never happen */
 117     {
 118         msg_Err( p_playlist, "no data directory, cannot load media library") ;
 119         return VLC_EGENERIC;
 120     }
 121
 122     if( asprintf( &psz_uri, "%s" DIR_SEP "ml.xspf", psz_datadir ) == -1 )
 123     {
 124         psz_uri = NULL;
 125         goto error;
 126     }
 127     struct stat p_stat;
 128     /* checks if media library file is present */
 129     if( utf8_stat( psz_uri , &p_stat ) )
 130     {
 131         free( psz_uri );
 132         return VLC_EGENERIC;
 133     }
 134     free( psz_uri );
 135
 136     if( asprintf( &psz_uri, "file/xspf-open://%s" DIR_SEP "ml.xspf",
 137                   psz_datadir ) == -1 )
 138     {
 139         psz_uri = NULL;
 140         goto error;
 141     }
 142
 143     const char *const psz_option = "meta-file";
 144     /* that option has to be cleaned in input_item_subitem_added() */
 145     /* vlc_gc_decref() in the same function */
 146     p_input = input_ItemNewExt( p_playlist, psz_uri,
 147                                 _("Media Library"), 1, &psz_option, -1 );
 148     if( p_input == NULL )
 149         goto error;
 150
 151     PL_LOCK;
 152     if( p_playlist->p_ml_onelevel->p_input )
 153         vlc_gc_decref( p_playlist->p_ml_onelevel->p_input );
 154     if( p_playlist->p_ml_category->p_input )
 155         vlc_gc_decref( p_playlist->p_ml_category->p_input );
 156
 157     p_playlist->p_ml_onelevel->p_input =
 158     p_playlist->p_ml_category->p_input = p_input;
 159     /* We save the input at two different place, incref */
 160     vlc_gc_incref( p_input );
 161     vlc_gc_incref( p_input );
 162
 163     vlc_event_attach( &p_input->event_manager, vlc_InputItemSubItemAdded,
 164                         input_item_subitem_added, p_playlist );
 165
 166     p_playlist->b_doing_ml = VLC_TRUE;
 167     PL_UNLOCK;
 168
 169     stats_TimerStart( p_playlist, "ML Load", STATS_TIMER_ML_LOAD );
 170     input_Read( p_playlist, p_input, VLC_TRUE );
 171     stats_TimerStop( p_playlist,STATS_TIMER_ML_LOAD );
 172
 173     PL_LOCK;
 174     p_playlist->b_doing_ml = VLC_FALSE;
 175     PL_UNLOCK;
 176
 177     vlc_event_detach( &p_input->event_manager, vlc_InputItemSubItemAdded,
 178                         input_item_subitem_added, p_playlist );
 179
 180     vlc_gc_decref( p_input );
 181     free( psz_uri );
 182     return VLC_SUCCESS;
 183
 184 error:
 185     free( psz_uri );
 186     return VLC_ENOMEM;
 187 }
 188
 189 int playlist_MLDump( playlist_t *p_playlist )
 190 {
 191     char *psz_datadir = p_playlist->p_libvlc->psz_datadir;
 192     if( !config_GetInt( p_playlist, "media-library") ) return VLC_SUCCESS;
 193     if( !psz_datadir ) /* XXX: This should never happen */
 194     {
 195         msg_Err( p_playlist, "no data directory, cannot save media library") ;
 196         return VLC_EGENERIC;
 197     }
 198
 199     char psz_dirname[ strlen( psz_datadir )
 200                       + sizeof( DIR_SEP "ml.xspf")];
 201     sprintf( psz_dirname, "%s", psz_datadir );
 202     if( config_CreateDir( (vlc_object_t *)p_playlist, psz_dirname ) )
 203     {
 204         return VLC_EGENERIC;
 205     }
 206
 207     strcat( psz_dirname, DIR_SEP "ml.xspf" );
 208
 209     stats_TimerStart( p_playlist, "ML Dump", STATS_TIMER_ML_DUMP );
 210     playlist_Export( p_playlist, psz_dirname, p_playlist->p_ml_category,
 211                      "export-xspf" );
 212     stats_TimerStop( p_playlist, STATS_TIMER_ML_DUMP );
 213
 214     return VLC_SUCCESS;
 215 }