1 /*****************************************************************************
2 * podcast.c: Podcast services discovery module
3 *****************************************************************************
4 * Copyright (C) 2005-2009 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))
135 var_DelCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
136 vlc_cond_destroy( &p_sys->wait );
137 vlc_mutex_destroy( &p_sys->lock );
144 /*****************************************************************************
146 *****************************************************************************/
147 static void Close( vlc_object_t *p_this )
149 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
150 services_discovery_sys_t *p_sys = p_sd->p_sys;
153 vlc_cancel (p_sys->thread);
154 vlc_join (p_sys->thread, NULL);
156 var_DelCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
157 vlc_cond_destroy( &p_sys->wait );
158 vlc_mutex_destroy( &p_sys->lock );
160 for( i = 0; i < p_sys->i_input; i++ )
162 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
166 input_Stop( p_input, true );
167 vlc_thread_join( p_input );
168 vlc_object_release( p_input );
170 p_sd->p_sys->pp_input[i] = NULL;
172 free( p_sd->p_sys->pp_input );
173 for( i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
174 free( p_sys->ppsz_urls );
178 /*****************************************************************************
180 *****************************************************************************/
181 static void *Run( void *data )
183 services_discovery_t *p_sd = data;
184 services_discovery_sys_t *p_sys = p_sd->p_sys;
186 vlc_mutex_lock( &p_sys->lock );
187 mutex_cleanup_push( &p_sys->lock );
190 while( !p_sys->b_update )
191 vlc_cond_wait( &p_sys->wait, &p_sys->lock );
193 int canc = vlc_savecancel ();
194 msg_Dbg( p_sd, "Update required" );
195 char* psz_urls = var_GetNonEmptyString( p_sd, "podcast-urls" );
196 if( psz_urls != NULL )
197 ParseUrls( p_sd, psz_urls );
199 p_sys->b_update = false;
201 for( int i = 0; i < p_sd->p_sys->i_input; i++ )
203 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
205 if( p_input->b_eof || p_input->b_error )
207 input_Stop( p_input, false );
208 vlc_thread_join( p_input );
209 vlc_object_release( p_input );
211 p_sd->p_sys->pp_input[i] = NULL;
212 REMOVE_ELEM( p_sys->pp_input, p_sys->i_input, i );
216 vlc_restorecancel (canc);
219 assert(0); /* dead code */
222 static int UrlsChange( vlc_object_t *p_this, char const *psz_var,
223 vlc_value_t oldval, vlc_value_t newval,
226 VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
228 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
230 vlc_mutex_lock( &p_sys->lock );
231 p_sys->b_update = true;
232 vlc_cond_signal( &p_sys->wait );
233 vlc_mutex_unlock( &p_sys->lock );
237 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls )
239 services_discovery_sys_t *p_sys = p_sd->p_sys;
243 char *psz_tok = strchr( psz_urls, '|' );
244 if( psz_tok ) *psz_tok = '\0';
245 for( i = 0; i < p_sys->i_urls; i++ )
246 if( !strcmp( psz_urls, p_sys->ppsz_urls[i] ) )
248 if( i == p_sys->i_urls )
250 /* Only add new urls.
251 * FIXME: We don't delete urls which have been removed from
252 * the config since we don't have a way to know which inputs
254 input_item_t *p_input;
255 INSERT_ELEM( p_sys->ppsz_urls, p_sys->i_urls, p_sys->i_urls,
256 strdup( psz_urls ) );
257 p_input = input_item_New( p_sd, psz_urls, psz_urls );
258 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
259 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
260 vlc_gc_decref( p_input );
261 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
262 input_CreateAndStart( p_sd, p_input, NULL ) );
264 if( psz_tok ) psz_urls = psz_tok+1;