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/vlc.h>
  30
  31 #include <vlc_common.h>
  32
  33 #include "libvlc_internal.h"
  34
  35 struct libvlc_media_library_t
  36 {
  37     libvlc_event_manager_t   event_manager;
  38     libvlc_instance_t *      p_libvlc_instance;
  39     int                      i_refcount;
  40     libvlc_media_list_t *    p_mlist;
  41 };
  42
  43
  44 /*
  45  * Private functions
  46  */
  47
  48 /*
  49  * Public libvlc functions
  50  */
  51
  52 /**************************************************************************
  53  *       new (Public)
  54  **************************************************************************/
  55 libvlc_media_library_t *
  56 libvlc_media_library_new( libvlc_instance_t * p_inst )
  57 {
  58     libvlc_media_library_t * p_mlib;
  59
  60     p_mlib = malloc(sizeof(libvlc_media_library_t));
  61
  62     if( !p_mlib )
  63     {
  64         libvlc_printerr( "Not enough memory" );
  65         return NULL;
  66     }
  67
  68     p_mlib->p_libvlc_instance = p_inst;
  69     p_mlib->i_refcount = 1;
  70     p_mlib->p_mlist = NULL;
  71
  72     libvlc_event_manager_init( &p_mlib->event_manager, p_mlib );
  73     libvlc_retain( p_inst );
  74     return p_mlib;
  75 }
  76
  77 /**************************************************************************
  78  *       release (Public)
  79  **************************************************************************/
  80 void libvlc_media_library_release( libvlc_media_library_t * p_mlib )
  81 {
  82     p_mlib->i_refcount--;
  83
  84     if( p_mlib->i_refcount > 0 )
  85         return;
  86
  87     libvlc_event_manager_destroy( &p_mlib->event_manager );
  88     libvlc_release( p_mlib->p_libvlc_instance );
  89     free( p_mlib );
  90 }
  91
  92 /**************************************************************************
  93  *       retain (Public)
  94  **************************************************************************/
  95 void libvlc_media_library_retain( libvlc_media_library_t * p_mlib )
  96 {
  97     p_mlib->i_refcount++;
  98 }
  99
 100 /**************************************************************************
 101  *       load (Public)
 102  *
 103  * It doesn't yet load the playlists
 104  **************************************************************************/
 105 int libvlc_media_library_load( libvlc_media_library_t * p_mlib )
 106 {
 107     char *psz_datadir = config_GetUserDir( VLC_DATA_DIR );
 108     char * psz_uri;
 109
 110     if( psz_datadir == NULL
 111      || asprintf( &psz_uri, "file/directory://%s" DIR_SEP "ml.xsp",
 112                   psz_datadir ) == -1 )
 113         psz_uri = NULL;
 114     free( psz_datadir );
 115
 116     if( psz_uri == NULL )
 117     {
 118         libvlc_printerr( "Not enough memory" );
 119         return -1;
 120     }
 121
 122     if( p_mlib->p_mlist )
 123         libvlc_media_list_release( p_mlib->p_mlist );
 124
 125     p_mlib->p_mlist = libvlc_media_list_new( p_mlib->p_libvlc_instance );
 126
 127     int ret = libvlc_media_list_add_file_content( p_mlib->p_mlist, psz_uri );
 128     free( psz_uri );
 129     return ret;
 130 }
 131
 132 /**************************************************************************
 133  *        media_list (Public)
 134  **************************************************************************/
 135 libvlc_media_list_t *
 136 libvlc_media_library_media_list( libvlc_media_library_t * p_mlib )
 137 {
 138     if( p_mlib->p_mlist )
 139         libvlc_media_list_retain( p_mlib->p_mlist );
 140     return p_mlib->p_mlist;
 141 }