git.sesse.net Git - vlc/blob - src/control/media_discoverer.c

   1 /*****************************************************************************
   2  * media_discoverer.c: libvlc new API media discoverer functions
   3  *****************************************************************************
   4  * Copyright (C) 2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Pierre d'Herbemont <pdherbemont # videolan.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
  24 #include "libvlc_internal.h"
  25 #include <vlc/libvlc.h>
  26 #include <assert.h>
  27 #include "vlc_services_discovery.h"
  28
  29 /*
  30  * Private functions
  31  */
  32
  33 /**************************************************************************
  34  *       services_discovery_item_added (Private) (VLC event callback)
  35  **************************************************************************/
  36
  37 static void services_discovery_item_added( const vlc_event_t * p_event,
  38                                            void * user_data )
  39 {
  40     input_item_t * p_item = p_event->u.services_discovery_item_added.p_new_item;
  41     const char * psz_cat = p_event->u.services_discovery_item_added.psz_category;
  42     libvlc_media_t * p_md;
  43     libvlc_media_discoverer_t * p_mdis = user_data;
  44     libvlc_media_list_t * p_mlist = p_mdis->p_mlist;
  45
  46     p_md = libvlc_media_new_from_input_item(
  47             p_mdis->p_libvlc_instance,
  48             p_item, NULL );
  49
  50     /* If we have a category, that mean we have to group the items having
  51      * that category in a media_list. */
  52     if( psz_cat )
  53     {
  54         p_mlist = kVLCDictionaryNotFound;
  55         p_mlist = vlc_dictionary_value_for_key( &p_mdis->catname_to_submedialist, psz_cat );
  56
  57         if( p_mlist == kVLCDictionaryNotFound )
  58         {
  59             libvlc_media_t * p_catmd;
  60             p_catmd = libvlc_media_new_as_node( p_mdis->p_libvlc_instance, psz_cat, NULL );
  61             p_mlist = libvlc_media_subitems( p_catmd, NULL );
  62             p_mlist->b_read_only = VLC_TRUE;
  63
  64             /* Insert the newly created mlist in our dictionary */
  65             __vlc_dictionary_insert( &p_mdis->catname_to_submedialist, psz_cat, p_mlist, 0 );
  66
  67             /* Insert the md into the root list */
  68             libvlc_media_list_lock( p_mdis->p_mlist );
  69             _libvlc_media_list_add_media( p_mdis->p_mlist, p_catmd, NULL );
  70             libvlc_media_list_unlock( p_mdis->p_mlist );
  71
  72             /* We don't release the mlist cause the dictionary
  73              * doesn't retain the object. But we release the md. */
  74             libvlc_media_release( p_catmd );
  75         }
  76     }
  77
  78     libvlc_media_list_lock( p_mlist );
  79     _libvlc_media_list_add_media( p_mlist, p_md, NULL );
  80     libvlc_media_list_unlock( p_mlist );
  81 }
  82
  83 /**************************************************************************
  84  *       services_discovery_item_removed (Private) (VLC event callback)
  85  **************************************************************************/
  86
  87 static void services_discovery_item_removed( const vlc_event_t * p_event,
  88                                              void * user_data )
  89 {
  90     input_item_t * p_item = p_event->u.services_discovery_item_added.p_new_item;
  91     libvlc_media_t * p_md;
  92     libvlc_media_discoverer_t * p_mdis = user_data;
  93
  94     int i, count = libvlc_media_list_count( p_mdis->p_mlist, NULL );
  95     libvlc_media_list_lock( p_mdis->p_mlist );
  96     for( i = 0; i < count; i++ )
  97     {
  98         p_md = libvlc_media_list_item_at_index( p_mdis->p_mlist, i, NULL );
  99         if( p_md->p_input_item == p_item )
 100         {
 101             _libvlc_media_list_remove_index( p_mdis->p_mlist, i, NULL );
 102             break;
 103         }
 104     }
 105     libvlc_media_list_unlock( p_mdis->p_mlist );
 106 }
 107
 108 /**************************************************************************
 109  *       services_discovery_started (Private) (VLC event callback)
 110  **************************************************************************/
 111
 112 static void services_discovery_started( const vlc_event_t * p_event,
 113                                         void * user_data )
 114 {
 115     (void)p_event;
 116     libvlc_media_discoverer_t * p_mdis = user_data;
 117     libvlc_event_t event;
 118     p_mdis->running = VLC_TRUE;
 119     event.type = libvlc_MediaDiscovererStarted;
 120     libvlc_event_send( p_mdis->p_event_manager, &event );
 121 }
 122
 123 /**************************************************************************
 124  *       services_discovery_ended (Private) (VLC event callback)
 125  **************************************************************************/
 126
 127 static void services_discovery_ended( const vlc_event_t * p_event,
 128                                       void * user_data )
 129 {
 130     (void)p_event;
 131     libvlc_media_discoverer_t * p_mdis = user_data;
 132     libvlc_event_t event;
 133     p_mdis->running = VLC_FALSE;
 134     event.type = libvlc_MediaDiscovererEnded;
 135     libvlc_event_send( p_mdis->p_event_manager, &event );
 136 }
 137
 138 /*
 139  * Public libvlc functions
 140  */
 141
 142 /**************************************************************************
 143  *       new (Public)
 144  *
 145  * Init an object.
 146  **************************************************************************/
 147 libvlc_media_discoverer_t *
 148 libvlc_media_discoverer_new_from_name( libvlc_instance_t * p_inst,
 149                                        const char * psz_name,
 150                                        libvlc_exception_t * p_e )
 151 {
 152     libvlc_media_discoverer_t * p_mdis;
 153
 154     p_mdis = malloc(sizeof(libvlc_media_discoverer_t));
 155     if( !p_mdis )
 156     {
 157         libvlc_exception_raise( p_e, "Not enough memory" );
 158         return NULL;
 159     }
 160
 161     p_mdis->p_libvlc_instance = p_inst;
 162     p_mdis->p_mlist = libvlc_media_list_new( p_inst, NULL );
 163     p_mdis->p_mlist->b_read_only = VLC_TRUE;
 164     p_mdis->running = VLC_FALSE;
 165
 166     vlc_dictionary_init( &p_mdis->catname_to_submedialist, 0 );
 167
 168     p_mdis->p_event_manager = libvlc_event_manager_new( p_mdis,
 169             p_inst, NULL );
 170
 171     libvlc_event_manager_register_event_type( p_mdis->p_event_manager,
 172             libvlc_MediaDiscovererStarted, NULL );
 173     libvlc_event_manager_register_event_type( p_mdis->p_event_manager,
 174             libvlc_MediaDiscovererEnded, NULL );
 175
 176     p_mdis->p_sd = services_discovery_Create( (vlc_object_t*)p_inst->p_libvlc_int, psz_name );
 177
 178     if( !p_mdis->p_sd )
 179     {
 180         free( p_mdis );
 181         libvlc_exception_raise( p_e, "Can't find the services_discovery module named '%s'", psz_name );
 182         return NULL;
 183     }
 184
 185     vlc_event_attach( services_discovery_EventManager( p_mdis->p_sd ),
 186                       vlc_ServicesDiscoveryItemAdded,
 187                       services_discovery_item_added,
 188                       p_mdis );
 189     vlc_event_attach( services_discovery_EventManager( p_mdis->p_sd ),
 190                       vlc_ServicesDiscoveryItemRemoved,
 191                       services_discovery_item_removed,
 192                       p_mdis );
 193     vlc_event_attach( services_discovery_EventManager( p_mdis->p_sd ),
 194                       vlc_ServicesDiscoveryStarted,
 195                       services_discovery_started,
 196                       p_mdis );
 197     vlc_event_attach( services_discovery_EventManager( p_mdis->p_sd ),
 198                       vlc_ServicesDiscoveryEnded,
 199                       services_discovery_ended,
 200                       p_mdis );
 201
 202     services_discovery_Start( p_mdis->p_sd );
 203
 204     /* Here we go */
 205
 206     return p_mdis;
 207 }
 208
 209 /**************************************************************************
 210  * release (Public)
 211  **************************************************************************/
 212 void
 213 libvlc_media_discoverer_release( libvlc_media_discoverer_t * p_mdis )
 214 {
 215     int i;
 216
 217     libvlc_media_list_release( p_mdis->p_mlist );
 218     services_discovery_Destroy( p_mdis->p_sd );
 219
 220     /* Free catname_to_submedialist and all the mlist */
 221     char ** all_keys = vlc_dictionary_all_keys( &p_mdis->catname_to_submedialist );
 222     for( i = 0; all_keys[i]; i++ )
 223     {
 224         libvlc_media_list_t * p_catmlist = vlc_dictionary_value_for_key( &p_mdis->catname_to_submedialist, all_keys[i] );
 225         libvlc_media_list_release( p_catmlist );
 226         free( all_keys[i] );
 227     }
 228     free( all_keys );
 229
 230     vlc_dictionary_clear( &p_mdis->catname_to_submedialist );
 231
 232     free( p_mdis );
 233 }
 234
 235 /**************************************************************************
 236  * localized_name (Public)
 237  **************************************************************************/
 238 char *
 239 libvlc_media_discoverer_localized_name( libvlc_media_discoverer_t * p_mdis )
 240 {
 241     return services_discovery_GetLocalizedName( p_mdis->p_sd );
 242 }
 243
 244 /**************************************************************************
 245  * media_list (Public)
 246  **************************************************************************/
 247 libvlc_media_list_t *
 248 libvlc_media_discoverer_media_list( libvlc_media_discoverer_t * p_mdis )
 249 {
 250     libvlc_media_list_retain( p_mdis->p_mlist );
 251     return p_mdis->p_mlist;
 252 }
 253
 254 /**************************************************************************
 255  * event_manager (Public)
 256  **************************************************************************/
 257 libvlc_event_manager_t *
 258 libvlc_media_discoverer_event_manager( libvlc_media_discoverer_t * p_mdis )
 259 {
 260     return p_mdis->p_event_manager;
 261 }
 262
 263
 264 /**************************************************************************
 265  * running (Public)
 266  **************************************************************************/
 267 int
 268 libvlc_media_discoverer_is_running( libvlc_media_discoverer_t * p_mdis )
 269 {
 270     return p_mdis->running;
 271 }
 272