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411 lines
13 KiB
411 lines
13 KiB
/*****************************************************************************
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* podcast.c: Podcast services discovery module
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*****************************************************************************
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* Copyright (C) 2005-2009 the VideoLAN team
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*
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* Authors: Antoine Cellerier <dionoea -at- videolan -dot- org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Includes
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS
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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_services_discovery.h>
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#include <vlc_network.h>
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#include <assert.h>
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#include <stdnoreturn.h>
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#include <unistd.h>
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/************************************************************************
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* Macros and definitions
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************************************************************************/
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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/* Callbacks */
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static int Open ( vlc_object_t * );
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static void Close( vlc_object_t * );
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VLC_SD_PROBE_HELPER("podcast", N_("Podcasts"), SD_CAT_INTERNET)
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#define URLS_TEXT N_("Podcast URLs list")
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#define URLS_LONGTEXT N_("Enter the list of podcasts to retrieve, " \
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"separated by '|' (pipe)." )
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vlc_module_begin ()
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set_shortname( "Podcast")
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set_description( N_("Podcasts") )
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set_category( CAT_PLAYLIST )
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set_subcategory( SUBCAT_PLAYLIST_SD )
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add_string( "podcast-urls", NULL,
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URLS_TEXT, URLS_LONGTEXT, false )
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set_capability( "services_discovery", 0 )
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set_callbacks( Open, Close )
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VLC_SD_PROBE_SUBMODULE
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vlc_module_end ()
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/*****************************************************************************
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* Local structures
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*****************************************************************************/
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enum {
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UPDATE_URLS,
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UPDATE_REQUEST
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}; /* FIXME Temporary. Updating by compound urls string to be removed later. */
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typedef struct
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{
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char **ppsz_urls;
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int i_urls;
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input_item_t **pp_items;
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int i_items;
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vlc_thread_t thread;
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vlc_mutex_t lock;
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vlc_cond_t wait;
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bool b_update;
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bool b_savedurls_loaded;
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char *psz_request;
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int update_type;
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} services_discovery_sys_t;
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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static void *Run( void * );
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static int UrlsChange( vlc_object_t *, char const *, vlc_value_t,
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vlc_value_t, void * );
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static int Request( vlc_object_t *, char const *, vlc_value_t,
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vlc_value_t, void * );
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static void ParseRequest( services_discovery_t *p_sd );
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static void ParseUrls( services_discovery_t *p_sd, char *psz_urls );
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static void SaveUrls( services_discovery_t *p_sd );
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/*****************************************************************************
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* Open: initialize and create stuff
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*****************************************************************************/
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static int Open( vlc_object_t *p_this )
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{
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if( strcmp( vlc_object_typename(vlc_object_parent(p_this)), "playlist" ) )
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return VLC_EGENERIC; /* FIXME: support LibVLC SD too! */
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services_discovery_t *p_sd = ( services_discovery_t* )p_this;
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services_discovery_sys_t *p_sys = malloc( sizeof( *p_sys ) );
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if( !p_sys )
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return VLC_ENOMEM;
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p_sys->i_urls = 0;
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p_sys->ppsz_urls = NULL;
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p_sys->pp_items = NULL;
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p_sys->i_items = 0;
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vlc_mutex_init( &p_sys->lock );
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vlc_cond_init( &p_sys->wait );
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p_sys->b_update = true;
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p_sys->b_savedurls_loaded = false;
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p_sys->psz_request = NULL;
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p_sys->update_type = UPDATE_URLS;
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p_sd->p_sys = p_sys;
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p_sd->description = _("Podcasts");
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/* Launch the callback associated with this variable */
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vlc_object_t *pl = vlc_object_parent(p_sd);
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var_Create( pl, "podcast-urls", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
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var_AddCallback( pl, "podcast-urls", UrlsChange, p_sys );
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var_Create( pl, "podcast-request", VLC_VAR_STRING );
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var_AddCallback( pl, "podcast-request", Request, p_sys );
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if (vlc_clone (&p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW))
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{
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var_DelCallback( pl, "podcast-request", Request, p_sys );
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var_DelCallback( pl, "podcast-urls", UrlsChange, p_sys );
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vlc_cond_destroy( &p_sys->wait );
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free (p_sys);
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return VLC_EGENERIC;
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}
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* Close:
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*****************************************************************************/
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static void Close( vlc_object_t *p_this )
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{
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services_discovery_t *p_sd = ( services_discovery_t* )p_this;
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services_discovery_sys_t *p_sys = p_sd->p_sys;
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vlc_object_t *pl = vlc_object_parent(p_sd);
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vlc_cancel (p_sys->thread);
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vlc_join (p_sys->thread, NULL);
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var_DelCallback( pl, "podcast-urls", UrlsChange, p_sys );
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var_DelCallback( pl, "podcast-request", Request, p_sys );
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vlc_cond_destroy( &p_sys->wait );
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for( int i = 0; i < p_sys->i_urls; i++ )
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free( p_sys->ppsz_urls[i] );
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free( p_sys->ppsz_urls );
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for( int i = 0; i < p_sys->i_items; i++ )
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input_item_Release( p_sys->pp_items[i] );
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free( p_sys->pp_items );
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free( p_sys->psz_request );
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free( p_sys );
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}
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/*****************************************************************************
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* Run: main thread
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*****************************************************************************/
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noreturn static void *Run( void *data )
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{
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services_discovery_t *p_sd = data;
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services_discovery_sys_t *p_sys = p_sd->p_sys;
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vlc_mutex_lock( &p_sys->lock );
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mutex_cleanup_push( &p_sys->lock );
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for( ;; )
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{
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while( !p_sys->b_update )
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vlc_cond_wait( &p_sys->wait, &p_sys->lock );
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int canc = vlc_savecancel ();
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msg_Dbg( p_sd, "Update required" );
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if( p_sys->update_type == UPDATE_URLS )
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{
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char *psz_urls = var_GetNonEmptyString( vlc_object_parent(p_sd),
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"podcast-urls" );
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ParseUrls( p_sd, psz_urls );
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free( psz_urls );
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}
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else if( p_sys->update_type == UPDATE_REQUEST )
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ParseRequest( p_sd );
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p_sys->b_update = false;
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vlc_restorecancel (canc);
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}
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vlc_cleanup_pop();
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vlc_assert_unreachable(); /* dead code */
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}
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static int UrlsChange( vlc_object_t *p_this, char const *psz_var,
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vlc_value_t oldval, vlc_value_t newval,
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void *p_data )
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{
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VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
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VLC_UNUSED(newval);
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services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
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vlc_mutex_lock( &p_sys->lock );
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p_sys->b_update = true;
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p_sys->update_type = UPDATE_URLS;
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vlc_cond_signal( &p_sys->wait );
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vlc_mutex_unlock( &p_sys->lock );
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return VLC_SUCCESS;
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}
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static int Request( vlc_object_t *p_this, char const *psz_var,
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vlc_value_t oldval, vlc_value_t newval,
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void *p_data )
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{
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VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
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services_discovery_sys_t *p_sys = (services_discovery_sys_t *)p_data;
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vlc_mutex_lock( &p_sys->lock );
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free( p_sys->psz_request );
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p_sys->psz_request = NULL;
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if( newval.psz_string && *newval.psz_string ) {
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p_sys->psz_request = strdup( newval.psz_string );
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p_sys->b_update = true;
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p_sys->update_type = UPDATE_REQUEST;
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vlc_cond_signal( &p_sys->wait );
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}
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vlc_mutex_unlock( &p_sys->lock );
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return VLC_SUCCESS;
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}
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static void ParseUrls( services_discovery_t *p_sd, char *psz_urls )
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{
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services_discovery_sys_t *p_sys = p_sd->p_sys;
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int i_new_items = 0;
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input_item_t **pp_new_items = NULL;
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int i_new_urls = 0;
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char **ppsz_new_urls = NULL;
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p_sys->b_savedurls_loaded = true;
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for( ;; )
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{
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int i;
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if( !psz_urls )
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break;
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char *psz_tok = strchr( psz_urls, '|' );
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if( psz_tok ) *psz_tok = '\0';
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for( i = 0; i < p_sys->i_urls; i++ )
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if( !strcmp( psz_urls, p_sys->ppsz_urls[i] ) )
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break;
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if( i == p_sys->i_urls )
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{
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TAB_APPEND( i_new_urls, ppsz_new_urls, strdup( psz_urls ) );
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input_item_t *p_input;
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p_input = input_item_New( psz_urls, psz_urls );
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input_item_AddOption( p_input, "demux=directory", VLC_INPUT_OPTION_TRUSTED );
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TAB_APPEND( i_new_items, pp_new_items, p_input );
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services_discovery_AddItem( p_sd, p_input );
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}
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else
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{
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TAB_APPEND( i_new_urls, ppsz_new_urls,
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strdup( p_sys->ppsz_urls[i]) );
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TAB_APPEND( i_new_items, pp_new_items, p_sys->pp_items[i] );
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}
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if( psz_tok )
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psz_urls = psz_tok+1;
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else
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break;
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}
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/* delete removed items and signal the removal */
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for( int i = 0; i<p_sys->i_items; ++i )
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{
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int j;
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for( j = 0; j < i_new_items; ++j )
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if( pp_new_items[j] == p_sys->pp_items[i] ) break;
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if( j == i_new_items )
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{
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services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
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input_item_Release( p_sys->pp_items[i] );
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}
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}
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free( p_sys->pp_items );
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for( int i = 0; i < p_sys->i_urls; i++ )
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free( p_sys->ppsz_urls[i] );
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free( p_sys->ppsz_urls );
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p_sys->ppsz_urls = ppsz_new_urls;
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p_sys->i_urls = i_new_urls;
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p_sys->pp_items = pp_new_items;
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p_sys->i_items = i_new_items;
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}
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static void ParseRequest( services_discovery_t *p_sd )
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{
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services_discovery_sys_t *p_sys = p_sd->p_sys;
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char *psz_request = p_sys->psz_request;
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int i;
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char *psz_tok = strchr( psz_request, ':' );
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if( !psz_tok ) return;
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*psz_tok = '\0';
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if ( ! p_sys->b_savedurls_loaded )
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{
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char *psz_urls = var_GetNonEmptyString( vlc_object_parent(p_sd),
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"podcast-urls" );
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ParseUrls( p_sd, psz_urls );
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free( psz_urls );
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}
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if( !strcmp( psz_request, "ADD" ) )
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{
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psz_request = psz_tok + 1;
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for( i = 0; i<p_sys->i_urls; i++ )
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if( !strcmp(p_sys->ppsz_urls[i],psz_request) )
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break;
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if( i == p_sys->i_urls )
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{
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TAB_APPEND( p_sys->i_urls, p_sys->ppsz_urls,
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strdup( psz_request ) );
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input_item_t *p_input;
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p_input = input_item_New( psz_request, psz_request );
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input_item_AddOption( p_input, "demux=directory", VLC_INPUT_OPTION_TRUSTED );
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TAB_APPEND( p_sys->i_items, p_sys->pp_items, p_input );
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services_discovery_AddItem( p_sd, p_input );
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SaveUrls( p_sd );
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}
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}
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else if ( !strcmp( psz_request, "RM" ) )
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{
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psz_request = psz_tok + 1;
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for( i = 0; i < p_sys->i_urls; i++ )
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if( !strcmp(p_sys->ppsz_urls[i], psz_request) )
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{
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services_discovery_RemoveItem( p_sd, p_sys->pp_items[i] );
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input_item_Release( p_sys->pp_items[i] );
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TAB_ERASE(p_sys->i_urls, p_sys->ppsz_urls, i );
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TAB_ERASE(p_sys->i_items, p_sys->pp_items, i );
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break;
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}
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SaveUrls( p_sd );
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}
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free( p_sys->psz_request );
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p_sys->psz_request = NULL;
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}
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static void SaveUrls( services_discovery_t *p_sd )
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{
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services_discovery_sys_t *p_sys = p_sd->p_sys;
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int i;
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char *psz_urls;
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int len = 0;
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for( i=0; i < p_sys->i_urls; i++ )
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len += strlen( p_sys->ppsz_urls[i] ) + 1;
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psz_urls = (char*) calloc( len, sizeof(char) );
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for( i=0; i < p_sys->i_urls; i++ )
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{
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strcat( psz_urls, p_sys->ppsz_urls[i] );
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if( i < p_sys->i_urls - 1 ) strcat( psz_urls, "|" );
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}
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config_PutPsz( "podcast-urls", psz_urls );
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free( psz_urls );
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}
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