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 VLC_SD_PROBE_HELPER("podcast", N_("Podcasts"))
63 #define URLS_TEXT N_("Podcast URLs list")
64 #define URLS_LONGTEXT N_("Enter the list of podcasts to retrieve, " \
65 "separated by '|' (pipe)." )
68 set_shortname( "Podcast")
69 set_description( N_("Podcasts") )
70 set_category( CAT_PLAYLIST )
71 set_subcategory( SUBCAT_PLAYLIST_SD )
73 add_string( "podcast-urls", NULL, NULL,
74 URLS_TEXT, URLS_LONGTEXT, false )
77 set_capability( "services_discovery", 0 )
78 set_callbacks( Open, Close )
80 VLC_SD_PROBE_SUBMODULE
85 /*****************************************************************************
87 *****************************************************************************/
92 }; /* FIXME Temporary. Updating by compound urls string to be removed later. */
94 struct services_discovery_sys_t
97 input_thread_t **pp_input;
103 input_item_t **pp_items;
114 /*****************************************************************************
116 *****************************************************************************/
117 static void *Run( void * );
118 static int UrlsChange( vlc_object_t *, char const *, vlc_value_t,
119 vlc_value_t, void * );
120 static int Request( vlc_object_t *, char const *, vlc_value_t,
121 vlc_value_t, void * );
122 static void ParseRequest( services_discovery_t *p_sd );
123 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls );
124 static void SaveUrls( services_discovery_t *p_sd );
126 /*****************************************************************************
127 * Open: initialize and create stuff
128 *****************************************************************************/
129 static int Open( vlc_object_t *p_this )
131 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
132 services_discovery_sys_t *p_sys = malloc(
133 sizeof( services_discovery_sys_t ) );
138 p_sys->ppsz_urls = NULL;
140 p_sys->pp_input = NULL;
141 p_sys->pp_items = NULL;
143 vlc_mutex_init( &p_sys->lock );
144 vlc_cond_init( &p_sys->wait );
145 p_sys->b_update = true;
146 p_sys->psz_request = NULL;
147 p_sys->update_type = UPDATE_URLS;
151 /* Launch the callback associated with this variable */
152 var_Create( p_sd, "podcast-urls", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
153 var_AddCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
155 var_Create( p_sd, "podcast-request", VLC_VAR_STRING );
156 var_AddCallback( p_sd, "podcast-request", Request, p_sys );
158 if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
160 var_DelCallback( p_sd, "podcast-request", Request, p_sys );
161 var_DelCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
162 vlc_cond_destroy( &p_sys->wait );
163 vlc_mutex_destroy( &p_sys->lock );
170 /*****************************************************************************
172 *****************************************************************************/
173 static void Close( vlc_object_t *p_this )
175 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
176 services_discovery_sys_t *p_sys = p_sd->p_sys;
179 vlc_cancel (p_sys->thread);
180 vlc_join (p_sys->thread, NULL);
182 var_DelCallback( p_sd, "podcast-urls", UrlsChange, p_sys );
183 var_DelCallback( p_sd, "podcast-request", Request, p_sys );
184 vlc_cond_destroy( &p_sys->wait );
185 vlc_mutex_destroy( &p_sys->lock );
187 for( i = 0; i < p_sys->i_input; i++ )
189 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
193 input_Stop( p_input, true );
194 vlc_thread_join( p_input );
195 vlc_object_release( p_input );
197 p_sd->p_sys->pp_input[i] = NULL;
199 free( p_sd->p_sys->pp_input );
200 for( i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
201 free( p_sys->ppsz_urls );
202 for( i = 0; i < p_sys->i_items; i++ ) vlc_gc_decref( p_sys->pp_items[i] );
203 free( p_sys->pp_items );
204 free( p_sys->psz_request );
208 /*****************************************************************************
210 *****************************************************************************/
211 static void *Run( void *data )
213 services_discovery_t *p_sd = data;
214 services_discovery_sys_t *p_sys = p_sd->p_sys;
216 vlc_mutex_lock( &p_sys->lock );
217 mutex_cleanup_push( &p_sys->lock );
220 while( !p_sys->b_update )
221 vlc_cond_wait( &p_sys->wait, &p_sys->lock );
223 int canc = vlc_savecancel ();
224 msg_Dbg( p_sd, "Update required" );
226 if( p_sys->update_type == UPDATE_URLS )
228 char* psz_urls = var_GetNonEmptyString( p_sd, "podcast-urls" );
229 ParseUrls( p_sd, psz_urls );
232 else if( p_sys->update_type == UPDATE_REQUEST )
234 ParseRequest( p_sd );
237 p_sys->b_update = false;
239 for( int i = 0; i < p_sd->p_sys->i_input; i++ )
241 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
243 if( p_input->b_eof || p_input->b_error )
245 input_Stop( p_input, false );
246 vlc_thread_join( p_input );
247 vlc_object_release( p_input );
249 p_sd->p_sys->pp_input[i] = NULL;
250 REMOVE_ELEM( p_sys->pp_input, p_sys->i_input, i );
254 vlc_restorecancel (canc);
257 assert(0); /* dead code */
260 static int UrlsChange( vlc_object_t *p_this, char const *psz_var,
261 vlc_value_t oldval, vlc_value_t newval,
264 VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
266 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
268 vlc_mutex_lock( &p_sys->lock );
269 p_sys->b_update = true;
270 p_sys->update_type = UPDATE_URLS;
271 vlc_cond_signal( &p_sys->wait );
272 vlc_mutex_unlock( &p_sys->lock );
276 static int Request( vlc_object_t *p_this, char const *psz_var,
277 vlc_value_t oldval, vlc_value_t newval,
280 VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
281 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
283 vlc_mutex_lock( &p_sys->lock );
284 free( p_sys->psz_request );
285 p_sys->psz_request = NULL;
286 if( newval.psz_string && *newval.psz_string ) {
287 p_sys->psz_request = strdup( newval.psz_string );
288 p_sys->b_update = true;
289 p_sys->update_type = UPDATE_REQUEST;
290 vlc_cond_signal( &p_sys->wait );
292 vlc_mutex_unlock( &p_sys->lock );
296 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls )
298 services_discovery_sys_t *p_sys = p_sd->p_sys;
300 input_item_t **pp_new_items = NULL;
303 char **ppsz_new_urls = NULL;
309 if( !psz_urls ) break;
311 char *psz_tok = strchr( psz_urls, '|' );
312 if( psz_tok ) *psz_tok = '\0';
314 for( i = 0; i < p_sys->i_urls; i++ )
315 if( !strcmp( psz_urls, p_sys->ppsz_urls[i] ) )
317 if( i == p_sys->i_urls )
319 INSERT_ELEM( ppsz_new_urls, i_new_urls, i_new_urls,
320 strdup( psz_urls ) );
322 input_item_t *p_input;
323 p_input = input_item_New( p_sd, psz_urls, psz_urls );
324 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
326 INSERT_ELEM( pp_new_items, i_new_items, i_new_items, p_input );
327 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
329 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
330 input_CreateAndStart( p_sd, p_input, NULL ) );
334 INSERT_ELEM( ppsz_new_urls, i_new_urls, i_new_urls,
335 strdup( p_sys->ppsz_urls[i]) );
336 INSERT_ELEM( pp_new_items, i_new_items, i_new_items, p_sys->pp_items[i] );
338 if( psz_tok ) psz_urls = psz_tok+1;
342 /* delete removed items and signal the removal */
343 for( i = 0; i<p_sys->i_items; ++i )
345 for( j = 0; j < i_new_items; ++j )
346 if( pp_new_items[j] == p_sys->pp_items[i] ) break;
347 if( j == i_new_items )
349 services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
350 vlc_gc_decref( p_sys->pp_items[i] );
353 free( p_sys->pp_items );
354 for( int i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
355 free( p_sys->ppsz_urls );
357 p_sys->ppsz_urls = ppsz_new_urls;
358 p_sys->i_urls = i_new_urls;
359 p_sys->pp_items = pp_new_items;
360 p_sys->i_items = i_new_items;
363 static void ParseRequest( services_discovery_t *p_sd )
365 services_discovery_sys_t *p_sys = p_sd->p_sys;
367 char *psz_request = p_sys->psz_request;
371 char *psz_tok = strchr( psz_request, ':' );
372 if( !psz_tok ) return;
374 if( !strcmp( psz_request, "ADD" ) )
376 psz_request = psz_tok + 1;
377 for( i = 0; i<p_sys->i_urls; i++ )
378 if( !strcmp(p_sys->ppsz_urls[i],psz_request) )
380 if( i == p_sys->i_urls )
382 INSERT_ELEM( p_sys->ppsz_urls, p_sys->i_urls, p_sys->i_urls,
383 strdup( psz_request ) );
385 input_item_t *p_input;
386 p_input = input_item_New( p_sd, psz_request, psz_request );
387 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
389 INSERT_ELEM( p_sys->pp_items, p_sys->i_items, p_sys->i_items, p_input );
390 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
392 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
393 input_CreateAndStart( p_sd, p_input, NULL ) );
397 else if ( !strcmp( psz_request, "RM" ) )
399 psz_request = psz_tok + 1;
400 for( i = 0; i<p_sys->i_urls; i++ )
401 if( !strcmp(p_sys->ppsz_urls[i],psz_request) )
403 if( i != p_sys->i_urls )
405 services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
406 vlc_gc_decref( p_sys->pp_items[i] );
407 REMOVE_ELEM( p_sys->ppsz_urls, p_sys->i_urls, i );
408 REMOVE_ELEM( p_sys->pp_items, p_sys->i_items, i );
413 free( p_sys->psz_request );
414 p_sys->psz_request = NULL;
417 static void SaveUrls( services_discovery_t *p_sd )
419 services_discovery_sys_t *p_sys = p_sd->p_sys;
424 for( i=0; i < p_sys->i_urls; i++ )
425 len += strlen( p_sys->ppsz_urls[i] ) + 1;
427 psz_urls = (char*) calloc( len, sizeof(char) );
429 for( i=0; i < p_sys->i_urls; i++ )
431 strcat( psz_urls, p_sys->ppsz_urls[i] );
432 if( i < p_sys->i_urls - 1 ) strcat( psz_urls, "|" );
435 config_PutPsz( p_sd, "podcast-urls", psz_urls );
436 config_SaveConfigFile( p_sd, "podcast" );