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>
35 #include <vlc_playlist.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 playlist_t *pl = pl_Get( 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->b_savedurls_loaded = false;
140 p_sys->psz_request = NULL;
141 p_sys->update_type = UPDATE_URLS;
145 /* Launch the callback associated with this variable */
146 var_Create( pl, "podcast-urls", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
147 var_AddCallback( pl, "podcast-urls", UrlsChange, p_sys );
149 var_Create( pl, "podcast-request", VLC_VAR_STRING );
150 var_AddCallback( pl, "podcast-request", Request, p_sys );
152 if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
154 var_DelCallback( pl, "podcast-request", Request, p_sys );
155 var_DelCallback( pl, "podcast-urls", UrlsChange, p_sys );
156 vlc_cond_destroy( &p_sys->wait );
157 vlc_mutex_destroy( &p_sys->lock );
164 /*****************************************************************************
166 *****************************************************************************/
167 static void Close( vlc_object_t *p_this )
169 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
170 services_discovery_sys_t *p_sys = p_sd->p_sys;
171 playlist_t *pl = pl_Get( p_this );
174 vlc_cancel (p_sys->thread);
175 vlc_join (p_sys->thread, NULL);
177 var_DelCallback( pl, "podcast-urls", UrlsChange, p_sys );
178 var_DelCallback( pl, "podcast-request", Request, p_sys );
179 vlc_cond_destroy( &p_sys->wait );
180 vlc_mutex_destroy( &p_sys->lock );
182 for( i = 0; i < p_sys->i_input; i++ )
184 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
188 input_Stop( p_input, true );
189 input_Close( p_input );
191 p_sd->p_sys->pp_input[i] = NULL;
193 free( p_sd->p_sys->pp_input );
194 for( i = 0; i < p_sys->i_urls; i++ ) free( p_sys->ppsz_urls[i] );
195 free( p_sys->ppsz_urls );
196 for( i = 0; i < p_sys->i_items; i++ ) vlc_gc_decref( p_sys->pp_items[i] );
197 free( p_sys->pp_items );
198 free( p_sys->psz_request );
202 /*****************************************************************************
204 *****************************************************************************/
206 static void *Run( void *data )
208 services_discovery_t *p_sd = data;
209 services_discovery_sys_t *p_sys = p_sd->p_sys;
211 vlc_mutex_lock( &p_sys->lock );
212 mutex_cleanup_push( &p_sys->lock );
215 while( !p_sys->b_update )
216 vlc_cond_wait( &p_sys->wait, &p_sys->lock );
218 int canc = vlc_savecancel ();
219 msg_Dbg( p_sd, "Update required" );
221 if( p_sys->update_type == UPDATE_URLS )
223 playlist_t *pl = pl_Get( p_sd );
224 char* psz_urls = var_GetNonEmptyString( pl, "podcast-urls" );
225 ParseUrls( p_sd, psz_urls );
228 else if( p_sys->update_type == UPDATE_REQUEST )
229 ParseRequest( p_sd );
231 p_sys->b_update = false;
233 for( int i = 0; i < p_sd->p_sys->i_input; i++ )
235 input_thread_t *p_input = p_sd->p_sys->pp_input[i];
237 if( p_input->b_eof || p_input->b_error )
239 input_Stop( p_input, false );
240 input_Close( 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;
297 p_sys->b_savedurls_loaded = true;
306 char *psz_tok = strchr( psz_urls, '|' );
307 if( psz_tok ) *psz_tok = '\0';
309 for( i = 0; i < p_sys->i_urls; i++ )
310 if( !strcmp( psz_urls, p_sys->ppsz_urls[i] ) )
312 if( i == p_sys->i_urls )
314 INSERT_ELEM( ppsz_new_urls, i_new_urls, i_new_urls,
315 strdup( psz_urls ) );
317 input_item_t *p_input;
318 p_input = input_item_New( psz_urls, psz_urls );
319 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
321 INSERT_ELEM( pp_new_items, i_new_items, i_new_items, p_input );
322 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
324 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
325 input_CreateAndStart( p_sd, p_input, NULL ) );
329 INSERT_ELEM( ppsz_new_urls, i_new_urls, i_new_urls,
330 strdup( p_sys->ppsz_urls[i]) );
331 INSERT_ELEM( pp_new_items, i_new_items, i_new_items, p_sys->pp_items[i] );
334 psz_urls = psz_tok+1;
339 /* delete removed items and signal the removal */
340 for( i = 0; i<p_sys->i_items; ++i )
342 for( j = 0; j < i_new_items; ++j )
343 if( pp_new_items[j] == p_sys->pp_items[i] ) break;
344 if( j == i_new_items )
346 services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
347 vlc_gc_decref( p_sys->pp_items[i] );
350 free( p_sys->pp_items );
351 for( int i = 0; i < p_sys->i_urls; i++ )
352 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;
373 if ( ! p_sys->b_savedurls_loaded )
375 playlist_t *pl = pl_Get( p_sd );
376 char* psz_urls = var_GetNonEmptyString( pl, "podcast-urls" );
377 ParseUrls( p_sd, psz_urls );
381 if( !strcmp( psz_request, "ADD" ) )
383 psz_request = psz_tok + 1;
384 for( i = 0; i<p_sys->i_urls; i++ )
385 if( !strcmp(p_sys->ppsz_urls[i],psz_request) )
387 if( i == p_sys->i_urls )
389 INSERT_ELEM( p_sys->ppsz_urls, p_sys->i_urls, p_sys->i_urls,
390 strdup( psz_request ) );
392 input_item_t *p_input;
393 p_input = input_item_New( psz_request, psz_request );
394 input_item_AddOption( p_input, "demux=podcast", VLC_INPUT_OPTION_TRUSTED );
396 INSERT_ELEM( p_sys->pp_items, p_sys->i_items, p_sys->i_items, p_input );
397 services_discovery_AddItem( p_sd, p_input, NULL /* no cat */ );
399 INSERT_ELEM( p_sys->pp_input, p_sys->i_input, p_sys->i_input,
400 input_CreateAndStart( p_sd, p_input, NULL ) );
404 else if ( !strcmp( psz_request, "RM" ) )
406 psz_request = psz_tok + 1;
407 for( i = 0; i<p_sys->i_urls; i++ )
408 if( !strcmp(p_sys->ppsz_urls[i],psz_request) )
410 if( i != p_sys->i_urls )
412 services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
413 vlc_gc_decref( p_sys->pp_items[i] );
414 REMOVE_ELEM( p_sys->ppsz_urls, p_sys->i_urls, i );
415 REMOVE_ELEM( p_sys->pp_items, p_sys->i_items, i );
420 free( p_sys->psz_request );
421 p_sys->psz_request = NULL;
424 static void SaveUrls( services_discovery_t *p_sd )
426 services_discovery_sys_t *p_sys = p_sd->p_sys;
431 for( i=0; i < p_sys->i_urls; i++ )
432 len += strlen( p_sys->ppsz_urls[i] ) + 1;
434 psz_urls = (char*) calloc( len, sizeof(char) );
436 for( i=0; i < p_sys->i_urls; i++ )
438 strcat( psz_urls, p_sys->ppsz_urls[i] );
439 if( i < p_sys->i_urls - 1 ) strcat( psz_urls, "|" );
442 config_PutPsz( p_sd, "podcast-urls", psz_urls );