1 /*****************************************************************************
2 * podcast.c: Podcast services discovery module
3 *****************************************************************************
4 * Copyright (C) 2005 the VideoLAN team
7 * Authors: Antoine Cellerier <dionoea -at- videolan -dot- org>
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.
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.
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 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
34 #include <vlc_playlist.h>
35 #include <vlc_services_discovery.h>
37 #include <vlc_network.h>
40 #include <errno.h> /* ENOMEM */
45 #ifdef HAVE_SYS_TIME_H
46 # include <sys/time.h>
49 /************************************************************************
50 * Macros and definitions
51 ************************************************************************/
53 /*****************************************************************************
55 *****************************************************************************/
58 static int Open ( vlc_object_t * );
59 static void Close( vlc_object_t * );
61 #define URLS_TEXT N_("Podcast URLs list")
62 #define URLS_LONGTEXT N_("Enter the list of podcasts to retrieve, " \
63 "separated by '|' (pipe)." )
66 set_shortname( "Podcast")
67 set_description( N_("Podcasts") )
68 set_category( CAT_PLAYLIST )
69 set_subcategory( SUBCAT_PLAYLIST_SD )
71 add_string( "podcast-urls", NULL, NULL,
72 URLS_TEXT, URLS_LONGTEXT, false );
75 set_capability( "services_discovery", 0 )
76 set_callbacks( Open, Close )
81 /*****************************************************************************
83 *****************************************************************************/
85 struct services_discovery_sys_t
88 input_thread_t **pp_input;
100 /*****************************************************************************
102 *****************************************************************************/
103 static void *Run( void * );
104 static int UrlsChange( vlc_object_t *, char const *, vlc_value_t,
105 vlc_value_t, void * );
106 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls );
108 /*****************************************************************************
109 * Open: initialize and create stuff
110 *****************************************************************************/
111 static int Open( vlc_object_t *p_this )
113 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
114 services_discovery_sys_t *p_sys = malloc(
115 sizeof( services_discovery_sys_t ) );
120 p_sys->ppsz_urls = NULL;
122 p_sys->pp_input = NULL;
123 vlc_mutex_init( &p_sys->lock );
124 vlc_cond_init( &p_sys->wait );
125 p_sys->b_update = true;
129 /* Launch the callback associated with this variable */
130 var_Create( p_sd, "podcast-urls", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
131 var_AddCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
133 if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
141 /*****************************************************************************
143 *****************************************************************************/
144 static void Close( vlc_object_t *p_this )
146 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
147 services_discovery_sys_t *p_sys = p_sd->p_sys;
150 vlc_cancel (p_sys->thread);
151 vlc_join (p_sys->thread, NULL);
153 var_DelCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
154 vlc_cond_destroy( &p_sys->wait );
155 vlc_mutex_destroy( &p_sys->lock );
157 for( i = 0; i < p_sys->i_input; i++ )
159 if( p_sd->p_sys->pp_input[i] )
161 input_StopThread( p_sd->p_sys->pp_input[i] );
162 vlc_object_release( p_sd->p_sys->pp_input[i] );
163 p_sd->p_sys->pp_input[i] = NULL;
166 free( p_sd->p_sys->pp_input );
167 for( i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
168 free( p_sys->ppsz_urls );
172 /*****************************************************************************
174 *****************************************************************************/
175 static void *Run( void *data )
177 services_discovery_t *p_sd = data;
178 services_discovery_sys_t *p_sys = p_sd->p_sys;
180 vlc_mutex_lock( &p_sys->lock );
181 mutex_cleanup_push( &p_sys->lock );
184 while( !p_sys->b_update )
185 vlc_cond_wait( &p_sys->wait, &p_sys->lock );
187 int canc = vlc_savecancel ();
188 msg_Dbg( p_sd, "Update required" );
189 char* psz_urls = var_GetNonEmptyString( p_sd, "podcast-urls" );
190 if( psz_urls != NULL )
191 ParseUrls( p_sd, psz_urls );
193 p_sys->b_update = false;
195 for( int i = 0; i < p_sd->p_sys->i_input; i++ )
197 if( p_sd->p_sys->pp_input[i]->b_eof
198 || p_sd->p_sys->pp_input[i]->b_error )
200 input_StopThread( p_sd->p_sys->pp_input[i] );
201 vlc_object_release( p_sd->p_sys->pp_input[i] );
202 p_sd->p_sys->pp_input[i] = NULL;
203 REMOVE_ELEM( p_sys->pp_input, p_sys->i_input, i );
207 vlc_restorecancel (canc);
210 assert(0); /* dead code */
213 static int UrlsChange( vlc_object_t *p_this, char const *psz_var,
214 vlc_value_t oldval, vlc_value_t newval,
217 VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
219 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
221 vlc_mutex_lock( &p_sys->lock );
222 p_sys->b_update = true;
223 vlc_cond_signal( &p_sys->wait );
224 vlc_mutex_unlock( &p_sys->lock );
228 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls )
230 services_discovery_sys_t *p_sys = p_sd->p_sys;
234 char *psz_tok = strchr( psz_urls, '|' );
235 if( psz_tok ) *psz_tok = '\0';
236 for( i = 0; i < p_sys->i_urls; i++ )
237 if( !strcmp( psz_urls, p_sys->ppsz_urls[i] ) )
239 if( i == p_sys->i_urls )
241 /* Only add new urls.
242 * FIXME: We don't delete urls which have been removed from
243 * the config since we don't have a way to know which inputs
245 input_item_t *p_input;
246 INSERT_ELEM( p_sys->ppsz_urls, p_sys->i_urls, p_sys->i_urls,
247 strdup( psz_urls ) );
248 p_input = input_item_NewExt( p_sd, psz_urls,
249 psz_urls, 0, NULL, -1 );
250 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
251 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
252 vlc_gc_decref( p_input );
253 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
254 input_CreateThread( p_sd, p_input ) );
256 if( psz_tok ) psz_urls = psz_tok+1;