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>
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 VLC_SD_PROBE_HELPER("podcast", N_("Podcasts"))
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 )
78 VLC_SD_PROBE_SUBMODULE
83 /*****************************************************************************
85 *****************************************************************************/
90 }; /* FIXME Temporary. Updating by compound urls string to be removed later. */
92 struct services_discovery_sys_t
95 input_thread_t **pp_input;
101 input_item_t **pp_items;
112 /*****************************************************************************
114 *****************************************************************************/
115 static void *Run( void * );
116 static int UrlsChange( vlc_object_t *, char const *, vlc_value_t,
117 vlc_value_t, void * );
118 static int Request( vlc_object_t *, char const *, vlc_value_t,
119 vlc_value_t, void * );
120 static void ParseRequest( services_discovery_t *p_sd );
121 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls );
122 static void SaveUrls( services_discovery_t *p_sd );
124 /*****************************************************************************
125 * Open: initialize and create stuff
126 *****************************************************************************/
127 static int Open( vlc_object_t *p_this )
129 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
130 services_discovery_sys_t *p_sys = malloc(
131 sizeof( services_discovery_sys_t ) );
136 p_sys->ppsz_urls = NULL;
138 p_sys->pp_input = NULL;
139 p_sys->pp_items = NULL;
141 vlc_mutex_init( &p_sys->lock );
142 vlc_cond_init( &p_sys->wait );
143 p_sys->b_update = true;
144 p_sys->psz_request = NULL;
145 p_sys->update_type = UPDATE_URLS;
149 /* Launch the callback associated with this variable */
150 var_Create( p_sd, "podcast-urls", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
151 var_AddCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
153 var_Create( p_sd, "podcast-request", VLC_VAR_STRING );
154 var_AddCallback( p_sd, "podcast-request", Request, p_sys );
156 if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
158 var_DelCallback( p_sd, "podcast-request", Request, p_sys );
159 var_DelCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
160 vlc_cond_destroy( &p_sys->wait );
161 vlc_mutex_destroy( &p_sys->lock );
168 /*****************************************************************************
170 *****************************************************************************/
171 static void Close( vlc_object_t *p_this )
173 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
174 services_discovery_sys_t *p_sys = p_sd->p_sys;
177 vlc_cancel (p_sys->thread);
178 vlc_join (p_sys->thread, NULL);
180 var_DelCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
181 var_DelCallback( p_sd, "podcast-request", Request, p_sys );
182 vlc_cond_destroy( &p_sys->wait );
183 vlc_mutex_destroy( &p_sys->lock );
185 for( i = 0; i < p_sys->i_input; i++ )
187 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
191 input_Stop( p_input, true );
192 vlc_thread_join( p_input );
193 vlc_object_release( p_input );
195 p_sd->p_sys->pp_input[i] = NULL;
197 free( p_sd->p_sys->pp_input );
198 for( i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
199 free( p_sys->ppsz_urls );
200 for( i = 0; i < p_sys->i_items; i++ ) vlc_gc_decref( p_sys->pp_items[i] );
201 free( p_sys->pp_items );
202 free( p_sys->psz_request );
206 /*****************************************************************************
208 *****************************************************************************/
209 static void *Run( void *data )
211 services_discovery_t *p_sd = data;
212 services_discovery_sys_t *p_sys = p_sd->p_sys;
214 vlc_mutex_lock( &p_sys->lock );
215 mutex_cleanup_push( &p_sys->lock );
218 while( !p_sys->b_update )
219 vlc_cond_wait( &p_sys->wait, &p_sys->lock );
221 int canc = vlc_savecancel ();
222 msg_Dbg( p_sd, "Update required" );
224 if( p_sys->update_type == UPDATE_URLS )
226 char* psz_urls = var_GetNonEmptyString( p_sd, "podcast-urls" );
227 ParseUrls( p_sd, psz_urls );
230 else if( p_sys->update_type == UPDATE_REQUEST )
232 ParseRequest( p_sd );
235 p_sys->b_update = false;
237 for( int i = 0; i < p_sd->p_sys->i_input; i++ )
239 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
241 if( p_input->b_eof || p_input->b_error )
243 input_Stop( p_input, false );
244 vlc_thread_join( p_input );
245 vlc_object_release( p_input );
247 p_sd->p_sys->pp_input[i] = NULL;
248 REMOVE_ELEM( p_sys->pp_input, p_sys->i_input, i );
252 vlc_restorecancel (canc);
255 assert(0); /* dead code */
258 static int UrlsChange( vlc_object_t *p_this, char const *psz_var,
259 vlc_value_t oldval, vlc_value_t newval,
262 VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
264 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
266 vlc_mutex_lock( &p_sys->lock );
267 p_sys->b_update = true;
268 p_sys->update_type = UPDATE_URLS;
269 vlc_cond_signal( &p_sys->wait );
270 vlc_mutex_unlock( &p_sys->lock );
274 static int Request( vlc_object_t *p_this, char const *psz_var,
275 vlc_value_t oldval, vlc_value_t newval,
278 VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
279 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
281 vlc_mutex_lock( &p_sys->lock );
282 free( p_sys->psz_request );
283 p_sys->psz_request = NULL;
284 if( newval.psz_string && *newval.psz_string ) {
285 p_sys->psz_request = strdup( newval.psz_string );
286 p_sys->b_update = true;
287 p_sys->update_type = UPDATE_REQUEST;
288 vlc_cond_signal( &p_sys->wait );
290 vlc_mutex_unlock( &p_sys->lock );
294 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls )
296 services_discovery_sys_t *p_sys = p_sd->p_sys;
298 input_item_t **pp_new_items = NULL;
301 char **ppsz_new_urls = NULL;
307 if( !psz_urls ) break;
309 char *psz_tok = strchr( psz_urls, '|' );
310 if( psz_tok ) *psz_tok = '\0';
312 for( i = 0; i < p_sys->i_urls; i++ )
313 if( !strcmp( psz_urls, p_sys->ppsz_urls[i] ) )
315 if( i == p_sys->i_urls )
317 INSERT_ELEM( ppsz_new_urls, i_new_urls, i_new_urls,
318 strdup( psz_urls ) );
320 input_item_t *p_input;
321 p_input = input_item_New( p_sd, psz_urls, psz_urls );
322 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
324 INSERT_ELEM( pp_new_items, i_new_items, i_new_items, p_input );
325 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
327 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
328 input_CreateAndStart( p_sd, p_input, NULL ) );
332 INSERT_ELEM( ppsz_new_urls, i_new_urls, i_new_urls,
333 strdup( p_sys->ppsz_urls[i]) );
334 INSERT_ELEM( pp_new_items, i_new_items, i_new_items, p_sys->pp_items[i] );
336 if( psz_tok ) psz_urls = psz_tok+1;
340 /* delete removed items and signal the removal */
341 for( i = 0; i<p_sys->i_items; ++i )
343 for( j = 0; j < i_new_items; ++j )
344 if( pp_new_items[j] == p_sys->pp_items[i] ) break;
345 if( j == i_new_items )
347 services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
348 vlc_gc_decref( p_sys->pp_items[i] );
351 free( p_sys->pp_items );
352 for( int i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
353 free( p_sys->ppsz_urls );
355 p_sys->ppsz_urls = ppsz_new_urls;
356 p_sys->i_urls = i_new_urls;
357 p_sys->pp_items = pp_new_items;
358 p_sys->i_items = i_new_items;
361 static void ParseRequest( services_discovery_t *p_sd )
363 services_discovery_sys_t *p_sys = p_sd->p_sys;
365 char *psz_request = p_sys->psz_request;
369 char *psz_tok = strchr( psz_request, ':' );
370 if( !psz_tok ) return;
372 if( !strcmp( psz_request, "ADD" ) )
374 psz_request = psz_tok + 1;
375 for( i = 0; i<p_sys->i_urls; i++ )
376 if( !strcmp(p_sys->ppsz_urls[i],psz_request) )
378 if( i == p_sys->i_urls )
380 INSERT_ELEM( p_sys->ppsz_urls, p_sys->i_urls, p_sys->i_urls,
381 strdup( psz_request ) );
383 input_item_t *p_input;
384 p_input = input_item_New( p_sd, psz_request, psz_request );
385 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
387 INSERT_ELEM( p_sys->pp_items, p_sys->i_items, p_sys->i_items, p_input );
388 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
390 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
391 input_CreateAndStart( p_sd, p_input, NULL ) );
395 else if ( !strcmp( psz_request, "RM" ) )
397 psz_request = psz_tok + 1;
398 for( i = 0; i<p_sys->i_urls; i++ )
399 if( !strcmp(p_sys->ppsz_urls[i],psz_request) )
401 if( i != p_sys->i_urls )
403 services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
404 vlc_gc_decref( p_sys->pp_items[i] );
405 REMOVE_ELEM( p_sys->ppsz_urls, p_sys->i_urls, i );
406 REMOVE_ELEM( p_sys->pp_items, p_sys->i_items, i );
411 free( p_sys->psz_request );
412 p_sys->psz_request = NULL;
415 static void SaveUrls( services_discovery_t *p_sd )
417 services_discovery_sys_t *p_sys = p_sd->p_sys;
422 for( i=0; i < p_sys->i_urls; i++ )
423 len += strlen( p_sys->ppsz_urls[i] ) + 1;
425 psz_urls = (char*) calloc( len, sizeof(char) );
427 for( i=0; i < p_sys->i_urls; i++ )
429 strcat( psz_urls, p_sys->ppsz_urls[i] );
430 if( i < p_sys->i_urls - 1 ) strcat( psz_urls, "|" );
433 config_PutPsz( p_sd, "podcast-urls", psz_urls );
434 config_SaveConfigFile( p_sd, "podcast" );