lib/media_library.c

   1 /*****************************************************************************
   2  * media_library.c: libvlc tags tree functions
   3  * Create a tree of the 'tags' of a media_list's medias.
   4  *****************************************************************************
   5  * Copyright (C) 2007 VLC authors and VideoLAN
   6  * $Id$
   7  *
   8  * Authors: Pierre d'Herbemont <pdherbemont # videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU Lesser General Public License as published by
  12  * the Free Software Foundation; either version 2.1 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public License
  21  * along with this program; if not, write to the Free Software Foundation,
  22  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 #ifdef HAVE_CONFIG_H
  26 # include "config.h"
  27 #endif
  28
  29 #include <vlc/libvlc.h>
  30 #include <vlc/libvlc_media.h>
  31 #include <vlc/libvlc_media_list.h>
  32 #include <vlc/libvlc_media_library.h>
  33 #include <vlc/libvlc_events.h>
  34
  35 #include <vlc_common.h>
  36
  37 #include "libvlc_internal.h"
  38
  39 struct libvlc_media_library_t
  40 {
  41     libvlc_event_manager_t * p_event_manager;
  42     libvlc_instance_t *      p_libvlc_instance;
  43     int                      i_refcount;
  44     libvlc_media_list_t *    p_mlist;
  45 };
  46
  47
  48 /*
  49  * Private functions
  50  */
  51
  52 /*
  53  * Public libvlc functions
  54  */
  55
  56 /**************************************************************************
  57  *       new (Public)
  58  **************************************************************************/
  59 libvlc_media_library_t *
  60 libvlc_media_library_new( libvlc_instance_t * p_inst )
  61 {
  62     libvlc_media_library_t * p_mlib;
  63
  64     p_mlib = malloc(sizeof(libvlc_media_library_t));
  65
  66     if( !p_mlib )
  67     {
  68         libvlc_printerr( "Not enough memory" );
  69         return NULL;
  70     }
  71
  72     p_mlib->p_libvlc_instance = p_inst;
  73     p_mlib->i_refcount = 1;
  74     p_mlib->p_mlist = NULL;
  75
  76     p_mlib->p_event_manager = libvlc_event_manager_new( p_mlib );
  77     if( unlikely(p_mlib->p_event_manager == NULL) )
  78     {
  79         free(p_mlib);
  80         return NULL;
  81     }
  82
  83     libvlc_retain( p_inst );
  84     return p_mlib;
  85 }
  86
  87 /**************************************************************************
  88  *       release (Public)
  89  **************************************************************************/
  90 void libvlc_media_library_release( libvlc_media_library_t * p_mlib )
  91 {
  92     p_mlib->i_refcount--;
  93
  94     if( p_mlib->i_refcount > 0 )
  95         return;
  96
  97     libvlc_event_manager_release( p_mlib->p_event_manager );
  98     libvlc_release( p_mlib->p_libvlc_instance );
  99     free( p_mlib );
 100 }
 101
 102 /**************************************************************************
 103  *       retain (Public)
 104  **************************************************************************/
 105 void libvlc_media_library_retain( libvlc_media_library_t * p_mlib )
 106 {
 107     p_mlib->i_refcount++;
 108 }
 109
 110 /**************************************************************************
 111  *       load (Public)
 112  *
 113  * It doesn't yet load the playlists
 114  **************************************************************************/
 115 int libvlc_media_library_load( libvlc_media_library_t * p_mlib )
 116 {
 117     char *psz_datadir = config_GetUserDir( VLC_DATA_DIR );
 118     char * psz_uri;
 119
 120     if( psz_datadir == NULL
 121      || asprintf( &psz_uri, "file/xspf-open://%s" DIR_SEP "ml.xsp",
 122                   psz_datadir ) == -1 )
 123         psz_uri = NULL;
 124     free( psz_datadir );
 125
 126     if( psz_uri == NULL )
 127     {
 128         libvlc_printerr( "Not enough memory" );
 129         return -1;
 130     }
 131
 132     if( p_mlib->p_mlist )
 133         libvlc_media_list_release( p_mlib->p_mlist );
 134
 135     p_mlib->p_mlist = libvlc_media_list_new( p_mlib->p_libvlc_instance );
 136
 137     int ret = libvlc_media_list_add_file_content( p_mlib->p_mlist, psz_uri );
 138     free( psz_uri );
 139     return ret;
 140 }
 141
 142 /**************************************************************************
 143  *        media_list (Public)
 144  **************************************************************************/
 145 libvlc_media_list_t *
 146 libvlc_media_library_media_list( libvlc_media_library_t * p_mlib )
 147 {
 148     if( p_mlib->p_mlist )
 149         libvlc_media_list_retain( p_mlib->p_mlist );
 150     return p_mlib->p_mlist;
 151 }