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;
94 input_item_t **pp_items;
103 /*****************************************************************************
105 *****************************************************************************/
106 static void *Run( void * );
107 static int UrlsChange( vlc_object_t *, char const *, vlc_value_t,
108 vlc_value_t, void * );
109 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls );
111 /*****************************************************************************
112 * Open: initialize and create stuff
113 *****************************************************************************/
114 static int Open( vlc_object_t *p_this )
116 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
117 services_discovery_sys_t *p_sys = malloc(
118 sizeof( services_discovery_sys_t ) );
123 p_sys->ppsz_urls = NULL;
125 p_sys->pp_input = NULL;
126 p_sys->pp_items = NULL;
128 vlc_mutex_init( &p_sys->lock );
129 vlc_cond_init( &p_sys->wait );
130 p_sys->b_update = true;
134 /* Launch the callback associated with this variable */
135 var_Create( p_sd, "podcast-urls", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
136 var_AddCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
138 if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
140 var_DelCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
141 vlc_cond_destroy( &p_sys->wait );
142 vlc_mutex_destroy( &p_sys->lock );
149 /*****************************************************************************
151 *****************************************************************************/
152 static void Close( vlc_object_t *p_this )
154 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
155 services_discovery_sys_t *p_sys = p_sd->p_sys;
158 vlc_cancel (p_sys->thread);
159 vlc_join (p_sys->thread, NULL);
161 var_DelCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
162 vlc_cond_destroy( &p_sys->wait );
163 vlc_mutex_destroy( &p_sys->lock );
165 for( i = 0; i < p_sys->i_input; i++ )
167 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
171 input_Stop( p_input, true );
172 vlc_thread_join( p_input );
173 vlc_object_release( p_input );
175 p_sd->p_sys->pp_input[i] = NULL;
177 free( p_sd->p_sys->pp_input );
178 for( i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
179 free( p_sys->ppsz_urls );
180 for( i = 0; i < p_sys->i_items; i++ ) vlc_gc_decref( p_sys->pp_items[i] );
181 free( p_sys->pp_items );
185 /*****************************************************************************
187 *****************************************************************************/
188 static void *Run( void *data )
190 services_discovery_t *p_sd = data;
191 services_discovery_sys_t *p_sys = p_sd->p_sys;
193 vlc_mutex_lock( &p_sys->lock );
194 mutex_cleanup_push( &p_sys->lock );
197 while( !p_sys->b_update )
198 vlc_cond_wait( &p_sys->wait, &p_sys->lock );
200 int canc = vlc_savecancel ();
201 msg_Dbg( p_sd, "Update required" );
202 char* psz_urls = var_GetNonEmptyString( p_sd, "podcast-urls" );
203 ParseUrls( p_sd, psz_urls );
205 p_sys->b_update = false;
207 for( int i = 0; i < p_sd->p_sys->i_input; i++ )
209 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
211 if( p_input->b_eof || p_input->b_error )
213 input_Stop( p_input, false );
214 vlc_thread_join( p_input );
215 vlc_object_release( p_input );
217 p_sd->p_sys->pp_input[i] = NULL;
218 REMOVE_ELEM( p_sys->pp_input, p_sys->i_input, i );
222 vlc_restorecancel (canc);
225 assert(0); /* dead code */
228 static int UrlsChange( vlc_object_t *p_this, char const *psz_var,
229 vlc_value_t oldval, vlc_value_t newval,
232 VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
234 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
236 vlc_mutex_lock( &p_sys->lock );
237 p_sys->b_update = true;
238 vlc_cond_signal( &p_sys->wait );
239 vlc_mutex_unlock( &p_sys->lock );
243 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls )
245 services_discovery_sys_t *p_sys = p_sd->p_sys;
247 input_item_t **pp_new_items = NULL;
250 char **ppsz_new_urls = NULL;
256 if( !psz_urls ) break;
258 char *psz_tok = strchr( psz_urls, '|' );
259 if( psz_tok ) *psz_tok = '\0';
261 for( i = 0; i < p_sys->i_urls; i++ )
262 if( !strcmp( psz_urls, p_sys->ppsz_urls[i] ) )
264 if( i == p_sys->i_urls )
266 INSERT_ELEM( ppsz_new_urls, i_new_urls, i_new_urls,
267 strdup( psz_urls ) );
269 input_item_t *p_input;
270 p_input = input_item_New( p_sd, psz_urls, psz_urls );
271 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
273 INSERT_ELEM( pp_new_items, i_new_items, i_new_items, p_input );
274 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
276 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
277 input_CreateAndStart( p_sd, p_input, NULL ) );
281 INSERT_ELEM( ppsz_new_urls, i_new_urls, i_new_urls,
282 strdup( p_sys->ppsz_urls[i]) );
283 INSERT_ELEM( pp_new_items, i_new_items, i_new_items, p_sys->pp_items[i] );
285 if( psz_tok ) psz_urls = psz_tok+1;
289 /* delete removed items and signal the removal */
290 for( i = 0; i<p_sys->i_items; ++i )
292 for( j = 0; j < i_new_items; ++j )
293 if( pp_new_items[j] == p_sys->pp_items[i] ) break;
294 if( j == i_new_items )
296 services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
297 vlc_gc_decref( p_sys->pp_items[i] );
300 free( p_sys->pp_items );
301 for( int i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
302 free( p_sys->ppsz_urls );
304 p_sys->ppsz_urls = ppsz_new_urls;
305 p_sys->i_urls = i_new_urls;
306 p_sys->pp_items = pp_new_items;
307 p_sys->i_items = i_new_items;