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 * p_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     p_mlib->p_event_manager = libvlc_event_manager_new( p_mlib );
  73     if( unlikely(p_mlib->p_event_manager == NULL) )
  74     {
  75         free(p_mlib);
  76         return NULL;
  77     }
  78
  79     libvlc_retain( p_inst );
  80     return p_mlib;
  81 }
  82
  83 /**************************************************************************
  84  *       release (Public)
  85  **************************************************************************/
  86 void libvlc_media_library_release( libvlc_media_library_t * p_mlib )
  87 {
  88     p_mlib->i_refcount--;
  89
  90     if( p_mlib->i_refcount > 0 )
  91         return;
  92
  93     libvlc_event_manager_release( p_mlib->p_event_manager );
  94     libvlc_release( p_mlib->p_libvlc_instance );
  95     free( p_mlib );
  96 }
  97
  98 /**************************************************************************
  99  *       retain (Public)
 100  **************************************************************************/
 101 void libvlc_media_library_retain( libvlc_media_library_t * p_mlib )
 102 {
 103     p_mlib->i_refcount++;
 104 }
 105
 106 /**************************************************************************
 107  *       load (Public)
 108  *
 109  * It doesn't yet load the playlists
 110  **************************************************************************/
 111 int libvlc_media_library_load( libvlc_media_library_t * p_mlib )
 112 {
 113     char *psz_datadir = config_GetUserDir( VLC_DATA_DIR );
 114     char * psz_uri;
 115
 116     if( psz_datadir == NULL
 117      || asprintf( &psz_uri, "file/xspf-open://%s" DIR_SEP "ml.xsp",
 118                   psz_datadir ) == -1 )
 119         psz_uri = NULL;
 120     free( psz_datadir );
 121
 122     if( psz_uri == NULL )
 123     {
 124         libvlc_printerr( "Not enough memory" );
 125         return -1;
 126     }
 127
 128     if( p_mlib->p_mlist )
 129         libvlc_media_list_release( p_mlib->p_mlist );
 130
 131     p_mlib->p_mlist = libvlc_media_list_new( p_mlib->p_libvlc_instance );
 132
 133     int ret = libvlc_media_list_add_file_content( p_mlib->p_mlist, psz_uri );
 134     free( psz_uri );
 135     return ret;
 136 }
 137
 138 /**************************************************************************
 139  *        media_list (Public)
 140  **************************************************************************/
 141 libvlc_media_list_t *
 142 libvlc_media_library_media_list( libvlc_media_library_t * p_mlib )
 143 {
 144     if( p_mlib->p_mlist )
 145         libvlc_media_list_retain( p_mlib->p_mlist );
 146     return p_mlib->p_mlist;
 147 }