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_descriptor_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_descriptor_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 = vlc_dictionary_value_for_key( &p_mdis->catname_to_submedialist, psz_cat );
  55         if( p_mlist == kVLCDictionaryNotFound )
  56         {
  57             libvlc_media_descriptor_t * p_catmd;
  58             p_catmd = libvlc_media_descriptor_new_as_node( p_mdis->p_libvlc_instance, psz_cat, NULL );
  59             p_mlist = libvlc_media_descriptor_subitems( p_catmd, NULL );
  60             p_mlist->b_read_only = VLC_TRUE;
  61
  62             /* Insert the newly created mlist in our dictionary */
  63             vlc_dictionary_insert( &p_mdis->catname_to_submedialist, psz_cat, p_mlist );
  64
  65             /* Insert the md into the root list */
  66             _libvlc_media_list_add_media_descriptor( p_mdis->p_mlist, p_catmd, NULL );
  67
  68             /* We don't release the mlist cause the dictionary
  69              * doesn't retain the object. But we release the md. */
  70             libvlc_media_descriptor_release( p_catmd );
  71         }
  72     }
  73
  74     libvlc_media_list_lock( p_mdis->p_mlist );
  75     _libvlc_media_list_add_media_descriptor( p_mlist, p_md, NULL );
  76     libvlc_media_list_unlock( p_mdis->p_mlist );
  77 }
  78
  79 /**************************************************************************
  80  *       services_discovery_item_removed (Private) (VLC event callback)
  81  **************************************************************************/
  82
  83 static void services_discovery_item_removed( const vlc_event_t * p_event,
  84                                              void * user_data )
  85 {
  86     input_item_t * p_item = p_event->u.services_discovery_item_added.p_new_item;
  87     libvlc_media_descriptor_t * p_md;
  88     libvlc_media_discoverer_t * p_mdis = user_data;
  89
  90     int i, count = libvlc_media_list_count( p_mdis->p_mlist, NULL );
  91     libvlc_media_list_lock( p_mdis->p_mlist );
  92     for( i = 0; i < count; i++ )
  93     {
  94         p_md = libvlc_media_list_item_at_index( p_mdis->p_mlist, i, NULL );
  95         if( p_md->p_input_item == p_item )
  96         {
  97             _libvlc_media_list_remove_index( p_mdis->p_mlist, i, NULL );
  98             break;
  99         }
 100     }
 101     libvlc_media_list_unlock( p_mdis->p_mlist );
 102 }
 103
 104 /**************************************************************************
 105  *       services_discovery_started (Private) (VLC event callback)
 106  **************************************************************************/
 107
 108 static void services_discovery_started( const vlc_event_t * p_event,
 109                                         void * user_data )
 110 {
 111     (void)p_event;
 112     libvlc_media_discoverer_t * p_mdis = user_data;
 113     libvlc_event_t event;
 114     p_mdis->running = VLC_TRUE;
 115     event.type = libvlc_MediaDiscovererStarted;
 116     libvlc_event_send( p_mdis->p_event_manager, &event );
 117 }
 118
 119 /**************************************************************************
 120  *       services_discovery_ended (Private) (VLC event callback)
 121  **************************************************************************/
 122
 123 static void services_discovery_ended( const vlc_event_t * p_event,
 124                                       void * user_data )
 125 {
 126     (void)p_event;
 127     libvlc_media_discoverer_t * p_mdis = user_data;
 128     libvlc_event_t event;
 129     p_mdis->running = VLC_FALSE;
 130     event.type = libvlc_MediaDiscovererEnded;
 131     libvlc_event_send( p_mdis->p_event_manager, &event );
 132 }
 133
 134 /*
 135  * Public libvlc functions
 136  */
 137
 138 /**************************************************************************
 139  *       new (Public)
 140  *
 141  * Init an object.
 142  **************************************************************************/
 143 libvlc_media_discoverer_t *
 144 libvlc_media_discoverer_new_from_name( libvlc_instance_t * p_inst,
 145                                        const char * psz_name,
 146                                        libvlc_exception_t * p_e )
 147 {
 148     libvlc_media_discoverer_t * p_mdis;
 149
 150     p_mdis = malloc(sizeof(libvlc_media_discoverer_t));
 151     if( !p_mdis )
 152     {
 153         libvlc_exception_raise( p_e, "Not enough memory" );
 154         return NULL;
 155     }
 156
 157     p_mdis->p_libvlc_instance = p_inst;
 158     p_mdis->p_mlist = libvlc_media_list_new( p_inst, NULL );
 159     p_mdis->p_mlist->b_read_only = VLC_TRUE;
 160     p_mdis->running = VLC_FALSE;
 161
 162     vlc_dictionary_init( &p_mdis->catname_to_submedialist, 0 );
 163
 164     p_mdis->p_event_manager = libvlc_event_manager_new( p_mdis,
 165             p_inst, NULL );
 166
 167     libvlc_event_manager_register_event_type( p_mdis->p_event_manager,
 168             libvlc_MediaDiscovererStarted, NULL );
 169     libvlc_event_manager_register_event_type( p_mdis->p_event_manager,
 170             libvlc_MediaDiscovererEnded, NULL );
 171
 172     p_mdis->p_sd = services_discovery_Create( (vlc_object_t*)p_inst->p_libvlc_int, psz_name );
 173
 174     if( !p_mdis->p_sd )
 175     {
 176         free( p_mdis );
 177         libvlc_exception_raise( p_e, "Can't find the services_discovery module named '%s'", psz_name );
 178         return NULL;
 179     }
 180
 181     vlc_event_attach( services_discovery_EventManager( p_mdis->p_sd ),
 182                       vlc_ServicesDiscoveryItemAdded,
 183                       services_discovery_item_added,
 184                       p_mdis );
 185     vlc_event_attach( services_discovery_EventManager( p_mdis->p_sd ),
 186                       vlc_ServicesDiscoveryItemRemoved,
 187                       services_discovery_item_removed,
 188                       p_mdis );
 189     vlc_event_attach( services_discovery_EventManager( p_mdis->p_sd ),
 190                       vlc_ServicesDiscoveryStarted,
 191                       services_discovery_started,
 192                       p_mdis );
 193     vlc_event_attach( services_discovery_EventManager( p_mdis->p_sd ),
 194                       vlc_ServicesDiscoveryEnded,
 195                       services_discovery_ended,
 196                       p_mdis );
 197
 198     services_discovery_Start( p_mdis->p_sd );
 199
 200     /* Here we go */
 201
 202     return p_mdis;
 203 }
 204
 205 /**************************************************************************
 206  * release (Public)
 207  **************************************************************************/
 208 void
 209 libvlc_media_discoverer_release( libvlc_media_discoverer_t * p_mdis )
 210 {
 211     int i;
 212
 213     libvlc_media_list_release( p_mdis->p_mlist );
 214     services_discovery_Destroy( p_mdis->p_sd );
 215
 216     /* Free catname_to_submedialist and all the mlist */
 217     char ** all_keys = vlc_dictionary_all_keys( &p_mdis->catname_to_submedialist );
 218     for( i = 0; all_keys[i]; i++ )
 219     {
 220         libvlc_media_list_t * p_catmlist = vlc_dictionary_value_for_key( &p_mdis->catname_to_submedialist, all_keys[i] );
 221         libvlc_media_list_release( p_catmlist );
 222         free( all_keys[i] );
 223     }
 224     free( all_keys );
 225
 226     vlc_dictionary_clear( &p_mdis->catname_to_submedialist );
 227
 228     free( p_mdis );
 229 }
 230
 231 /**************************************************************************
 232  * localized_name (Public)
 233  **************************************************************************/
 234 char *
 235 libvlc_media_discoverer_localized_name( libvlc_media_discoverer_t * p_mdis )
 236 {
 237     return services_discovery_GetLocalizedName( p_mdis->p_sd );
 238 }
 239
 240 /**************************************************************************
 241  * media_list (Public)
 242  **************************************************************************/
 243 libvlc_media_list_t *
 244 libvlc_media_discoverer_media_list( libvlc_media_discoverer_t * p_mdis )
 245 {
 246     libvlc_media_list_retain( p_mdis->p_mlist );
 247     return p_mdis->p_mlist;
 248 }
 249
 250 /**************************************************************************
 251  * event_manager (Public)
 252  **************************************************************************/
 253 libvlc_event_manager_t *
 254 libvlc_media_discoverer_event_manager( libvlc_media_discoverer_t * p_mdis )
 255 {
 256     return p_mdis->p_event_manager;
 257 }
 258
 259
 260 /**************************************************************************
 261  * running (Public)
 262  **************************************************************************/
 263 vlc_bool_t
 264 libvlc_media_discoverer_is_running( libvlc_media_discoverer_t * p_mdis )
 265 {
 266     return p_mdis->running;
 267 }
 268