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_network.h>
38 #include <errno.h> /* ENOMEM */
43 #ifdef HAVE_SYS_TIME_H
44 # include <sys/time.h>
47 /************************************************************************
48 * Macros and definitions
49 ************************************************************************/
51 /*****************************************************************************
53 *****************************************************************************/
56 static int Open ( vlc_object_t * );
57 static void Close( vlc_object_t * );
59 #define URLS_TEXT N_("Podcast URLs list")
60 #define URLS_LONGTEXT N_("Enter the list of podcasts to retrieve, " \
61 "separated by '|' (pipe)." )
64 set_shortname( "Podcast")
65 set_description( N_("Podcasts") )
66 set_category( CAT_PLAYLIST )
67 set_subcategory( SUBCAT_PLAYLIST_SD )
69 add_string( "podcast-urls", NULL, NULL,
70 URLS_TEXT, URLS_LONGTEXT, false );
73 set_capability( "services_discovery", 0 )
74 set_callbacks( Open, Close )
79 /*****************************************************************************
81 *****************************************************************************/
83 struct services_discovery_sys_t
86 input_thread_t **pp_input;
98 /*****************************************************************************
100 *****************************************************************************/
101 static void *Run( void * );
102 static int UrlsChange( vlc_object_t *, char const *, vlc_value_t,
103 vlc_value_t, void * );
104 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls );
106 /*****************************************************************************
107 * Open: initialize and create stuff
108 *****************************************************************************/
109 static int Open( vlc_object_t *p_this )
111 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
112 services_discovery_sys_t *p_sys = malloc(
113 sizeof( services_discovery_sys_t ) );
118 p_sys->ppsz_urls = NULL;
120 p_sys->pp_input = NULL;
121 vlc_mutex_init( &p_sys->lock );
122 vlc_cond_init( &p_sys->wait );
123 p_sys->b_update = true;
127 /* Launch the callback associated with this variable */
128 var_Create( p_sd, "podcast-urls", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
129 var_AddCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
131 if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
139 /*****************************************************************************
141 *****************************************************************************/
142 static void Close( vlc_object_t *p_this )
144 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
145 services_discovery_sys_t *p_sys = p_sd->p_sys;
148 vlc_cancel (p_sys->thread);
149 vlc_join (p_sys->thread, NULL);
151 var_DelCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
152 vlc_cond_destroy( &p_sys->wait );
153 vlc_mutex_destroy( &p_sys->lock );
155 for( i = 0; i < p_sys->i_input; i++ )
157 if( p_sd->p_sys->pp_input[i] )
159 input_StopThread( p_sd->p_sys->pp_input[i] );
160 vlc_object_release( p_sd->p_sys->pp_input[i] );
161 p_sd->p_sys->pp_input[i] = NULL;
164 free( p_sd->p_sys->pp_input );
165 for( i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
166 free( p_sys->ppsz_urls );
170 /*****************************************************************************
172 *****************************************************************************/
173 static void *Run( void *data )
175 services_discovery_t *p_sd = data;
176 services_discovery_sys_t *p_sys = p_sd->p_sys;
178 vlc_mutex_lock( &p_sys->lock );
179 mutex_cleanup_push( &p_sys->lock );
182 while( !p_sys->b_update )
183 vlc_cond_wait( &p_sys->wait, &p_sys->lock );
185 int canc = vlc_savecancel ();
186 msg_Dbg( p_sd, "Update required" );
187 char* psz_urls = var_GetNonEmptyString( p_sd, "podcast-urls" );
188 if( psz_urls != NULL )
189 ParseUrls( p_sd, psz_urls );
191 p_sys->b_update = false;
193 for( int i = 0; i < p_sd->p_sys->i_input; i++ )
195 if( p_sd->p_sys->pp_input[i]->b_eof
196 || p_sd->p_sys->pp_input[i]->b_error )
198 input_StopThread( p_sd->p_sys->pp_input[i] );
199 vlc_object_release( p_sd->p_sys->pp_input[i] );
200 p_sd->p_sys->pp_input[i] = NULL;
201 REMOVE_ELEM( p_sys->pp_input, p_sys->i_input, i );
205 vlc_restorecancel (canc);
208 assert(0); /* dead code */
211 static int UrlsChange( vlc_object_t *p_this, char const *psz_var,
212 vlc_value_t oldval, vlc_value_t newval,
215 VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
217 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
219 vlc_mutex_lock( &p_sys->lock );
220 p_sys->b_update = true;
221 vlc_cond_signal( &p_sys->wait );
222 vlc_mutex_unlock( &p_sys->lock );
226 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls )
228 services_discovery_sys_t *p_sys = p_sd->p_sys;
232 char *psz_tok = strchr( psz_urls, '|' );
233 if( psz_tok ) *psz_tok = '\0';
234 for( i = 0; i < p_sys->i_urls; i++ )
235 if( !strcmp( psz_urls, p_sys->ppsz_urls[i] ) )
237 if( i == p_sys->i_urls )
239 /* Only add new urls.
240 * FIXME: We don't delete urls which have been removed from
241 * the config since we don't have a way to know which inputs
243 input_item_t *p_input;
244 INSERT_ELEM( p_sys->ppsz_urls, p_sys->i_urls, p_sys->i_urls,
245 strdup( psz_urls ) );
246 p_input = input_item_NewExt( p_sd, psz_urls,
247 psz_urls, 0, NULL, -1 );
248 input_item_AddOption( p_input, "demux=podcast" );
249 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
250 vlc_gc_decref( p_input );
251 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
252 input_CreateThread( p_sd, p_input ) );
254 if( psz_tok ) psz_urls = psz_tok+1;