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 #define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
35 #include <vlc_services_discovery.h>
36 #include <vlc_network.h>
41 /************************************************************************
42 * Macros and definitions
43 ************************************************************************/
45 /*****************************************************************************
47 *****************************************************************************/
50 static int Open ( vlc_object_t * );
51 static void Close( vlc_object_t * );
53 VLC_SD_PROBE_HELPER("podcast", "Podcasts", SD_CAT_INTERNET)
55 #define URLS_TEXT N_("Podcast URLs list")
56 #define URLS_LONGTEXT N_("Enter the list of podcasts to retrieve, " \
57 "separated by '|' (pipe)." )
60 set_shortname( "Podcast")
61 set_description( N_("Podcasts") )
62 set_category( CAT_PLAYLIST )
63 set_subcategory( SUBCAT_PLAYLIST_SD )
65 add_string( "podcast-urls", NULL,
66 URLS_TEXT, URLS_LONGTEXT, false )
68 set_capability( "services_discovery", 0 )
69 set_callbacks( Open, Close )
71 VLC_SD_PROBE_SUBMODULE
76 /*****************************************************************************
78 *****************************************************************************/
83 }; /* FIXME Temporary. Updating by compound urls string to be removed later. */
85 struct services_discovery_sys_t
88 input_thread_t **pp_input;
94 input_item_t **pp_items;
101 bool b_savedurls_loaded;
106 /*****************************************************************************
108 *****************************************************************************/
109 static void *Run( void * );
110 static int UrlsChange( vlc_object_t *, char const *, vlc_value_t,
111 vlc_value_t, void * );
112 static int Request( vlc_object_t *, char const *, vlc_value_t,
113 vlc_value_t, void * );
114 static void ParseRequest( services_discovery_t *p_sd );
115 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls );
116 static void SaveUrls( services_discovery_t *p_sd );
118 /*****************************************************************************
119 * Open: initialize and create stuff
120 *****************************************************************************/
121 static int Open( vlc_object_t *p_this )
123 if( strcmp( p_this->p_parent->psz_object_type, "playlist" ) )
124 return VLC_EGENERIC; /* FIXME: support LibVLC SD too! */
126 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
127 services_discovery_sys_t *p_sys = malloc( sizeof( *p_sys ) );
132 p_sys->ppsz_urls = NULL;
134 p_sys->pp_input = NULL;
135 p_sys->pp_items = NULL;
137 vlc_mutex_init( &p_sys->lock );
138 vlc_cond_init( &p_sys->wait );
139 p_sys->b_update = true;
140 p_sys->b_savedurls_loaded = false;
141 p_sys->psz_request = NULL;
142 p_sys->update_type = UPDATE_URLS;
146 /* Launch the callback associated with this variable */
147 vlc_object_t *pl = p_sd->p_parent;
148 var_Create( pl, "podcast-urls", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
149 var_AddCallback( pl, "podcast-urls", UrlsChange, p_sys );
151 var_Create( pl, "podcast-request", VLC_VAR_STRING );
152 var_AddCallback( pl, "podcast-request", Request, p_sys );
154 if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
156 var_DelCallback( pl, "podcast-request", Request, p_sys );
157 var_DelCallback( pl, "podcast-urls", UrlsChange, p_sys );
158 vlc_cond_destroy( &p_sys->wait );
159 vlc_mutex_destroy( &p_sys->lock );
166 /*****************************************************************************
168 *****************************************************************************/
169 static void Close( vlc_object_t *p_this )
171 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
172 services_discovery_sys_t *p_sys = p_sd->p_sys;
173 vlc_object_t *pl = p_sd->p_parent;
176 vlc_cancel (p_sys->thread);
177 vlc_join (p_sys->thread, NULL);
179 var_DelCallback( pl, "podcast-urls", UrlsChange, p_sys );
180 var_DelCallback( pl, "podcast-request", Request, p_sys );
181 vlc_cond_destroy( &p_sys->wait );
182 vlc_mutex_destroy( &p_sys->lock );
184 for( i = 0; i < p_sys->i_input; i++ )
186 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
190 input_Stop( p_input );
191 input_Close( p_input );
193 p_sd->p_sys->pp_input[i] = NULL;
195 free( p_sd->p_sys->pp_input );
196 for( i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
197 free( p_sys->ppsz_urls );
198 for( i = 0; i < p_sys->i_items; i++ ) vlc_gc_decref( p_sys->pp_items[i] );
199 free( p_sys->pp_items );
200 free( p_sys->psz_request );
204 /*****************************************************************************
206 *****************************************************************************/
208 static void *Run( void *data )
210 services_discovery_t *p_sd = data;
211 services_discovery_sys_t *p_sys = p_sd->p_sys;
213 vlc_mutex_lock( &p_sys->lock );
214 mutex_cleanup_push( &p_sys->lock );
217 while( !p_sys->b_update )
218 vlc_cond_wait( &p_sys->wait, &p_sys->lock );
220 int canc = vlc_savecancel ();
221 msg_Dbg( p_sd, "Update required" );
223 if( p_sys->update_type == UPDATE_URLS )
225 char *psz_urls = var_GetNonEmptyString( p_sd->p_parent,
227 ParseUrls( p_sd, psz_urls );
230 else if( p_sys->update_type == UPDATE_REQUEST )
231 ParseRequest( p_sd );
233 p_sys->b_update = false;
235 for( int i = 0; i < p_sd->p_sys->i_input; i++ )
237 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
239 if( p_input->b_eof || p_input->b_error )
241 input_Stop( p_input );
242 input_Close( p_input );
244 p_sd->p_sys->pp_input[i] = NULL;
245 REMOVE_ELEM( p_sys->pp_input, p_sys->i_input, i );
249 vlc_restorecancel (canc);
252 vlc_assert_unreachable(); /* dead code */
255 static int UrlsChange( vlc_object_t *p_this, char const *psz_var,
256 vlc_value_t oldval, vlc_value_t newval,
259 VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
261 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
263 vlc_mutex_lock( &p_sys->lock );
264 p_sys->b_update = true;
265 p_sys->update_type = UPDATE_URLS;
266 vlc_cond_signal( &p_sys->wait );
267 vlc_mutex_unlock( &p_sys->lock );
271 static int Request( vlc_object_t *p_this, char const *psz_var,
272 vlc_value_t oldval, vlc_value_t newval,
275 VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
276 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
278 vlc_mutex_lock( &p_sys->lock );
279 free( p_sys->psz_request );
280 p_sys->psz_request = NULL;
281 if( newval.psz_string && *newval.psz_string ) {
282 p_sys->psz_request = strdup( newval.psz_string );
283 p_sys->b_update = true;
284 p_sys->update_type = UPDATE_REQUEST;
285 vlc_cond_signal( &p_sys->wait );
287 vlc_mutex_unlock( &p_sys->lock );
291 static void ParseUrls( services_discovery_t *p_sd, char *psz_urls )
293 services_discovery_sys_t *p_sys = p_sd->p_sys;
295 input_item_t **pp_new_items = NULL;
298 char **ppsz_new_urls = NULL;
299 p_sys->b_savedurls_loaded = true;
308 char *psz_tok = strchr( psz_urls, '|' );
309 if( psz_tok ) *psz_tok = '\0';
311 for( i = 0; i < p_sys->i_urls; i++ )
312 if( !strcmp( psz_urls, p_sys->ppsz_urls[i] ) )
314 if( i == p_sys->i_urls )
316 INSERT_ELEM( ppsz_new_urls, i_new_urls, i_new_urls,
317 strdup( psz_urls ) );
319 input_item_t *p_input;
320 p_input = input_item_New( psz_urls, psz_urls );
321 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
323 INSERT_ELEM( pp_new_items, i_new_items, i_new_items, p_input );
324 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
326 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
327 input_CreateAndStart( p_sd, p_input, NULL ) );
331 INSERT_ELEM( ppsz_new_urls, i_new_urls, i_new_urls,
332 strdup( p_sys->ppsz_urls[i]) );
333 INSERT_ELEM( pp_new_items, i_new_items, i_new_items, p_sys->pp_items[i] );
336 psz_urls = psz_tok+1;
341 /* delete removed items and signal the removal */
342 for( i = 0; i<p_sys->i_items; ++i )
344 for( j = 0; j < i_new_items; ++j )
345 if( pp_new_items[j] == p_sys->pp_items[i] ) break;
346 if( j == i_new_items )
348 services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
349 vlc_gc_decref( p_sys->pp_items[i] );
352 free( p_sys->pp_items );
353 for( int i = 0; i < p_sys->i_urls; i++ )
354 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;
375 if ( ! p_sys->b_savedurls_loaded )
377 char *psz_urls = var_GetNonEmptyString( p_sd->p_parent,
379 ParseUrls( p_sd, psz_urls );
383 if( !strcmp( psz_request, "ADD" ) )
385 psz_request = psz_tok + 1;
386 for( i = 0; i<p_sys->i_urls; i++ )
387 if( !strcmp(p_sys->ppsz_urls[i],psz_request) )
389 if( i == p_sys->i_urls )
391 INSERT_ELEM( p_sys->ppsz_urls, p_sys->i_urls, p_sys->i_urls,
392 strdup( psz_request ) );
394 input_item_t *p_input;
395 p_input = input_item_New( psz_request, psz_request );
396 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
398 INSERT_ELEM( p_sys->pp_items, p_sys->i_items, p_sys->i_items, p_input );
399 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
401 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
402 input_CreateAndStart( p_sd, p_input, NULL ) );
406 else if ( !strcmp( psz_request, "RM" ) )
408 psz_request = psz_tok + 1;
409 for( i = 0; i<p_sys->i_urls; i++ )
410 if( !strcmp(p_sys->ppsz_urls[i],psz_request) )
412 if( i != p_sys->i_urls )
414 services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
415 vlc_gc_decref( p_sys->pp_items[i] );
416 REMOVE_ELEM( p_sys->ppsz_urls, p_sys->i_urls, i );
417 REMOVE_ELEM( p_sys->pp_items, p_sys->i_items, i );
422 free( p_sys->psz_request );
423 p_sys->psz_request = NULL;
426 static void SaveUrls( services_discovery_t *p_sd )
428 services_discovery_sys_t *p_sys = p_sd->p_sys;
433 for( i=0; i < p_sys->i_urls; i++ )
434 len += strlen( p_sys->ppsz_urls[i] ) + 1;
436 psz_urls = (char*) calloc( len, sizeof(char) );
438 for( i=0; i < p_sys->i_urls; i++ )
440 strcat( psz_urls, p_sys->ppsz_urls[i] );
441 if( i < p_sys->i_urls - 1 ) strcat( psz_urls, "|" );
444 config_PutPsz( p_sd, "podcast-urls", psz_urls );