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_services_discovery.h>
36 #include <vlc_network.h>
43 /************************************************************************
44 * Macros and definitions
45 ************************************************************************/
47 /*****************************************************************************
49 *****************************************************************************/
52 static int Open ( vlc_object_t * );
53 static void Close( vlc_object_t * );
55 VLC_SD_PROBE_HELPER("podcast", "Podcasts", SD_CAT_INTERNET)
57 #define URLS_TEXT N_("Podcast URLs list")
58 #define URLS_LONGTEXT N_("Enter the list of podcasts to retrieve, " \
59 "separated by '|' (pipe)." )
62 set_shortname( "Podcast")
63 set_description( N_("Podcasts") )
64 set_category( CAT_PLAYLIST )
65 set_subcategory( SUBCAT_PLAYLIST_SD )
67 add_string( "podcast-urls", NULL,
68 URLS_TEXT, URLS_LONGTEXT, false )
70 set_capability( "services_discovery", 0 )
71 set_callbacks( Open, Close )
73 VLC_SD_PROBE_SUBMODULE
78 /*****************************************************************************
80 *****************************************************************************/
85 }; /* FIXME Temporary. Updating by compound urls string to be removed later. */
87 struct services_discovery_sys_t
90 input_thread_t **pp_input;
96 input_item_t **pp_items;
107 /*****************************************************************************
109 *****************************************************************************/
110 static void *Run( void * );
111 static int UrlsChange( vlc_object_t *, char const *, vlc_value_t,
112 vlc_value_t, void * );
113 static int Request( vlc_object_t *, char const *, vlc_value_t,
114 vlc_value_t, void * );
115 static void ParseRequest( services_discovery_t *p_sd );
116 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls );
117 static void SaveUrls( services_discovery_t *p_sd );
119 /*****************************************************************************
120 * Open: initialize and create stuff
121 *****************************************************************************/
122 static int Open( vlc_object_t *p_this )
124 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
125 services_discovery_sys_t *p_sys = malloc(
126 sizeof( services_discovery_sys_t ) );
131 p_sys->ppsz_urls = NULL;
133 p_sys->pp_input = NULL;
134 p_sys->pp_items = NULL;
136 vlc_mutex_init( &p_sys->lock );
137 vlc_cond_init( &p_sys->wait );
138 p_sys->b_update = true;
139 p_sys->psz_request = NULL;
140 p_sys->update_type = UPDATE_URLS;
144 /* Launch the callback associated with this variable */
145 var_Create( p_sd, "podcast-urls", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
146 var_AddCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
148 var_Create( p_sd, "podcast-request", VLC_VAR_STRING );
149 var_AddCallback( p_sd, "podcast-request", Request, p_sys );
151 if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
153 var_DelCallback( p_sd, "podcast-request", Request, p_sys );
154 var_DelCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
155 vlc_cond_destroy( &p_sys->wait );
156 vlc_mutex_destroy( &p_sys->lock );
163 /*****************************************************************************
165 *****************************************************************************/
166 static void Close( vlc_object_t *p_this )
168 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
169 services_discovery_sys_t *p_sys = p_sd->p_sys;
172 vlc_cancel (p_sys->thread);
173 vlc_join (p_sys->thread, NULL);
175 var_DelCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
176 var_DelCallback( p_sd, "podcast-request", Request, p_sys );
177 vlc_cond_destroy( &p_sys->wait );
178 vlc_mutex_destroy( &p_sys->lock );
180 for( i = 0; i < p_sys->i_input; i++ )
182 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
186 input_Stop( p_input, true );
187 vlc_thread_join( p_input );
188 vlc_object_release( p_input );
190 p_sd->p_sys->pp_input[i] = NULL;
192 free( p_sd->p_sys->pp_input );
193 for( i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
194 free( p_sys->ppsz_urls );
195 for( i = 0; i < p_sys->i_items; i++ ) vlc_gc_decref( p_sys->pp_items[i] );
196 free( p_sys->pp_items );
197 free( p_sys->psz_request );
201 /*****************************************************************************
203 *****************************************************************************/
204 static void *Run( void *data )
206 services_discovery_t *p_sd = data;
207 services_discovery_sys_t *p_sys = p_sd->p_sys;
209 vlc_mutex_lock( &p_sys->lock );
210 mutex_cleanup_push( &p_sys->lock );
213 while( !p_sys->b_update )
214 vlc_cond_wait( &p_sys->wait, &p_sys->lock );
216 int canc = vlc_savecancel ();
217 msg_Dbg( p_sd, "Update required" );
219 if( p_sys->update_type == UPDATE_URLS )
221 char* psz_urls = var_GetNonEmptyString( p_sd, "podcast-urls" );
222 ParseUrls( p_sd, psz_urls );
225 else if( p_sys->update_type == UPDATE_REQUEST )
227 ParseRequest( p_sd );
230 p_sys->b_update = false;
232 for( int i = 0; i < p_sd->p_sys->i_input; i++ )
234 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
236 if( p_input->b_eof || p_input->b_error )
238 input_Stop( p_input, false );
239 vlc_thread_join( p_input );
240 vlc_object_release( p_input );
242 p_sd->p_sys->pp_input[i] = NULL;
243 REMOVE_ELEM( p_sys->pp_input, p_sys->i_input, i );
247 vlc_restorecancel (canc);
250 assert(0); /* dead code */
253 static int UrlsChange( vlc_object_t *p_this, char const *psz_var,
254 vlc_value_t oldval, vlc_value_t newval,
257 VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
259 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
261 vlc_mutex_lock( &p_sys->lock );
262 p_sys->b_update = true;
263 p_sys->update_type = UPDATE_URLS;
264 vlc_cond_signal( &p_sys->wait );
265 vlc_mutex_unlock( &p_sys->lock );
269 static int Request( vlc_object_t *p_this, char const *psz_var,
270 vlc_value_t oldval, vlc_value_t newval,
273 VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
274 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
276 vlc_mutex_lock( &p_sys->lock );
277 free( p_sys->psz_request );
278 p_sys->psz_request = NULL;
279 if( newval.psz_string && *newval.psz_string ) {
280 p_sys->psz_request = strdup( newval.psz_string );
281 p_sys->b_update = true;
282 p_sys->update_type = UPDATE_REQUEST;
283 vlc_cond_signal( &p_sys->wait );
285 vlc_mutex_unlock( &p_sys->lock );
289 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls )
291 services_discovery_sys_t *p_sys = p_sd->p_sys;
293 input_item_t **pp_new_items = NULL;
296 char **ppsz_new_urls = NULL;
302 if( !psz_urls ) break;
304 char *psz_tok = strchr( psz_urls, '|' );
305 if( psz_tok ) *psz_tok = '\0';
307 for( i = 0; i < p_sys->i_urls; i++ )
308 if( !strcmp( psz_urls, p_sys->ppsz_urls[i] ) )
310 if( i == p_sys->i_urls )
312 INSERT_ELEM( ppsz_new_urls, i_new_urls, i_new_urls,
313 strdup( psz_urls ) );
315 input_item_t *p_input;
316 p_input = input_item_New( p_sd, psz_urls, psz_urls );
317 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
319 INSERT_ELEM( pp_new_items, i_new_items, i_new_items, p_input );
320 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
322 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
323 input_CreateAndStart( p_sd, p_input, NULL ) );
327 INSERT_ELEM( ppsz_new_urls, i_new_urls, i_new_urls,
328 strdup( p_sys->ppsz_urls[i]) );
329 INSERT_ELEM( pp_new_items, i_new_items, i_new_items, p_sys->pp_items[i] );
331 if( psz_tok ) psz_urls = psz_tok+1;
335 /* delete removed items and signal the removal */
336 for( i = 0; i<p_sys->i_items; ++i )
338 for( j = 0; j < i_new_items; ++j )
339 if( pp_new_items[j] == p_sys->pp_items[i] ) break;
340 if( j == i_new_items )
342 services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
343 vlc_gc_decref( p_sys->pp_items[i] );
346 free( p_sys->pp_items );
347 for( int i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
348 free( p_sys->ppsz_urls );
350 p_sys->ppsz_urls = ppsz_new_urls;
351 p_sys->i_urls = i_new_urls;
352 p_sys->pp_items = pp_new_items;
353 p_sys->i_items = i_new_items;
356 static void ParseRequest( services_discovery_t *p_sd )
358 services_discovery_sys_t *p_sys = p_sd->p_sys;
360 char *psz_request = p_sys->psz_request;
364 char *psz_tok = strchr( psz_request, ':' );
365 if( !psz_tok ) return;
367 if( !strcmp( psz_request, "ADD" ) )
369 psz_request = psz_tok + 1;
370 for( i = 0; i<p_sys->i_urls; i++ )
371 if( !strcmp(p_sys->ppsz_urls[i],psz_request) )
373 if( i == p_sys->i_urls )
375 INSERT_ELEM( p_sys->ppsz_urls, p_sys->i_urls, p_sys->i_urls,
376 strdup( psz_request ) );
378 input_item_t *p_input;
379 p_input = input_item_New( p_sd, psz_request, psz_request );
380 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
382 INSERT_ELEM( p_sys->pp_items, p_sys->i_items, p_sys->i_items, p_input );
383 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
385 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
386 input_CreateAndStart( p_sd, p_input, NULL ) );
390 else if ( !strcmp( psz_request, "RM" ) )
392 psz_request = psz_tok + 1;
393 for( i = 0; i<p_sys->i_urls; i++ )
394 if( !strcmp(p_sys->ppsz_urls[i],psz_request) )
396 if( i != p_sys->i_urls )
398 services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
399 vlc_gc_decref( p_sys->pp_items[i] );
400 REMOVE_ELEM( p_sys->ppsz_urls, p_sys->i_urls, i );
401 REMOVE_ELEM( p_sys->pp_items, p_sys->i_items, i );
406 free( p_sys->psz_request );
407 p_sys->psz_request = NULL;
410 static void SaveUrls( services_discovery_t *p_sd )
412 services_discovery_sys_t *p_sys = p_sd->p_sys;
417 for( i=0; i < p_sys->i_urls; i++ )
418 len += strlen( p_sys->ppsz_urls[i] ) + 1;
420 psz_urls = (char*) calloc( len, sizeof(char) );
422 for( i=0; i < p_sys->i_urls; i++ )
424 strcat( psz_urls, p_sys->ppsz_urls[i] );
425 if( i < p_sys->i_urls - 1 ) strcat( psz_urls, "|" );
428 config_PutPsz( p_sd, "podcast-urls", psz_urls );