/***************************************************************************** * engine.c : Run the playlist and handle its control ***************************************************************************** * Copyright (C) 1999-2004 the VideoLAN team * $Id$ * * Authors: Samuel Hocevar * Clément Stenac * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ #include #include #include #include #include "vlc_playlist.h" #include "vlc_interaction.h" #include "playlist_internal.h" /***************************************************************************** * Local prototypes *****************************************************************************/ static void VariablesInit( playlist_t *p_playlist ); /** * Create playlist * * Create a playlist structure. * \param p_parent the vlc object that is to be the parent of this playlist * \return a pointer to the created playlist, or NULL on error */ playlist_t * playlist_Create( vlc_object_t *p_parent ) { playlist_t *p_playlist; int i_tree; /* Allocate structure */ p_playlist = vlc_object_create( p_parent, VLC_OBJECT_PLAYLIST ); if( !p_playlist ) { msg_Err( p_parent, "out of memory" ); return NULL; } p_parent->p_libvlc->p_playlist = p_playlist; VariablesInit( p_playlist ); /* Initialise data structures */ vlc_mutex_init( p_playlist, &p_playlist->gc_lock ); p_playlist->i_last_playlist_id = 0; p_playlist->i_last_input_id = 0; p_playlist->p_input = NULL; p_playlist->i_vout_destroyed_date = 0; p_playlist->i_sout_destroyed_date = 0; p_playlist->i_size = 0; p_playlist->pp_items = NULL; p_playlist->i_all_size = 0; p_playlist->pp_all_items = NULL; p_playlist->i_input_items = 0; p_playlist->pp_input_items = NULL; p_playlist->i_random = 0; p_playlist->pp_random = NULL; p_playlist->i_random_index = 0; p_playlist->b_reset_random = VLC_TRUE; i_tree = var_CreateGetBool( p_playlist, "playlist-tree" ); p_playlist->b_always_tree = (i_tree == 1); p_playlist->b_never_tree = (i_tree == 2); p_playlist->b_doing_ml = VLC_FALSE; p_playlist->p_root_category = playlist_NodeCreate( p_playlist, NULL, NULL); p_playlist->p_root_onelevel = playlist_NodeCreate( p_playlist, NULL, NULL); /* Create playlist and media library */ p_playlist->p_local_category = playlist_NodeCreate( p_playlist, _( "Playlist" ),p_playlist->p_root_category ); p_playlist->p_local_onelevel = playlist_NodeCreate( p_playlist, _( "Playlist" ), p_playlist->p_root_onelevel ); p_playlist->p_local_category->i_flags |= PLAYLIST_RO_FLAG; p_playlist->p_local_onelevel->i_flags |= PLAYLIST_RO_FLAG; /* Link the nodes together. Todo: actually create them from the same input*/ p_playlist->p_local_onelevel->p_input->i_id = p_playlist->p_local_category->p_input->i_id; if( config_GetInt( p_playlist, "media-library") ) { p_playlist->p_ml_category = playlist_NodeCreate( p_playlist, _( "Media Library" ), p_playlist->p_root_category ); p_playlist->p_ml_onelevel = playlist_NodeCreate( p_playlist, _( "Media Library" ), p_playlist->p_root_onelevel ); p_playlist->p_ml_category->i_flags |= PLAYLIST_RO_FLAG; p_playlist->p_ml_onelevel->i_flags |= PLAYLIST_RO_FLAG; p_playlist->p_ml_onelevel->p_input->i_id = p_playlist->p_ml_category->p_input->i_id; } else { p_playlist->p_ml_category = p_playlist->p_ml_onelevel = NULL; } /* Initial status */ p_playlist->status.p_item = NULL; p_playlist->status.p_node = p_playlist->p_local_onelevel; p_playlist->request.b_request = VLC_FALSE; p_playlist->status.i_status = PLAYLIST_STOPPED; p_playlist->i_sort = SORT_ID; p_playlist->i_order = ORDER_NORMAL; vlc_object_attach( p_playlist, p_parent ); playlist_MLLoad( p_playlist ); return p_playlist; } void playlist_Destroy( playlist_t *p_playlist ) { while( p_playlist->i_sds ) { playlist_ServicesDiscoveryRemove( p_playlist, p_playlist->pp_sds[0]->psz_module ); } playlist_MLDump( p_playlist ); vlc_thread_join( p_playlist->p_preparse ); vlc_thread_join( p_playlist->p_secondary_preparse ); vlc_thread_join( p_playlist ); vlc_object_detach( p_playlist->p_preparse ); vlc_object_detach( p_playlist->p_secondary_preparse ); var_Destroy( p_playlist, "intf-change" ); var_Destroy( p_playlist, "item-change" ); var_Destroy( p_playlist, "playlist-current" ); var_Destroy( p_playlist, "intf-popmenu" ); var_Destroy( p_playlist, "intf-show" ); var_Destroy( p_playlist, "play-and-stop" ); var_Destroy( p_playlist, "play-and-exit" ); var_Destroy( p_playlist, "random" ); var_Destroy( p_playlist, "repeat" ); var_Destroy( p_playlist, "loop" ); var_Destroy( p_playlist, "activity" ); PL_LOCK; playlist_NodeDelete( p_playlist, p_playlist->p_root_category, VLC_TRUE, VLC_TRUE ); playlist_NodeDelete( p_playlist, p_playlist->p_root_onelevel, VLC_TRUE, VLC_TRUE ); PL_UNLOCK; if( p_playlist->p_stats ) free( p_playlist->p_stats ); vlc_mutex_destroy( &p_playlist->gc_lock ); vlc_object_destroy( p_playlist->p_preparse ); vlc_object_destroy( p_playlist->p_secondary_preparse ); vlc_object_detach( p_playlist ); vlc_object_destroy( p_playlist ); } /* Destroy remaining objects */ static mtime_t ObjectGarbageCollector( playlist_t *p_playlist, int i_type, mtime_t destroy_date ) { vlc_object_t *p_obj; if( destroy_date > mdate() ) return destroy_date; if( destroy_date == 0 ) { /* give a little time */ return mdate() + I64C(1000000); } else { vlc_mutex_lock( &p_playlist->gc_lock ); while( ( p_obj = vlc_object_find( p_playlist, i_type, FIND_CHILD ) ) ) { if( p_obj->p_parent != (vlc_object_t*)p_playlist ) { /* only first child (ie unused) */ vlc_object_release( p_obj ); break; } if( i_type == VLC_OBJECT_VOUT ) { msg_Dbg( p_playlist, "garbage collector destroying 1 vout" ); vlc_object_detach( p_obj ); vlc_object_release( p_obj ); vout_Destroy( (vout_thread_t *)p_obj ); } else if( i_type == VLC_OBJECT_SOUT ) { vlc_object_release( p_obj ); sout_DeleteInstance( (sout_instance_t*)p_obj ); } } vlc_mutex_unlock( &p_playlist->gc_lock ); return 0; } } /** Main loop for the playlist */ void playlist_MainLoop( playlist_t *p_playlist ) { playlist_item_t *p_item = NULL; vlc_bool_t b_playexit = var_GetBool( p_playlist, "play-and-exit" ); PL_LOCK /* First, check if we have something to do */ /* FIXME : this can be called several times */ if( p_playlist->request.b_request ) { /* Stop the existing input */ if( p_playlist->p_input && !p_playlist->p_input->b_die ) { PL_DEBUG( "incoming request - stopping current input" ); input_StopThread( p_playlist->p_input ); } } /* If there is an input, check that it doesn't need to die. */ if( p_playlist->p_input ) { /* This input is dead. Remove it ! */ if( p_playlist->p_input->b_dead ) { int i_activity; input_thread_t *p_input; PL_DEBUG( "dead input" ); p_input = p_playlist->p_input; p_playlist->p_input = NULL; /* Release the playlist lock, because we may get stuck * in input_DestroyThread() for some time. */ PL_UNLOCK /* Destroy input */ input_DestroyThread( p_input ); /* Unlink current input * (_after_ input_DestroyThread for vout garbage collector) */ vlc_object_detach( p_input ); /* Destroy object */ vlc_object_destroy( p_input ); p_playlist->i_vout_destroyed_date = 0; p_playlist->i_sout_destroyed_date = 0; if( p_playlist->status.p_item->i_flags & PLAYLIST_REMOVE_FLAG ) { PL_DEBUG( "%s was marked for deletion, deleting", PLI_NAME( p_playlist->status.p_item ) ); playlist_ItemDelete( p_playlist->status.p_item ); if( p_playlist->request.p_item == p_playlist->status.p_item ) p_playlist->request.p_item = NULL; p_playlist->status.p_item = NULL; } i_activity= var_GetInteger( p_playlist, "activity") ; var_SetInteger( p_playlist, "activity", i_activity - DEFAULT_INPUT_ACTIVITY ); return; } /* This input is dying, let it do */ else if( p_playlist->p_input->b_die ) { PL_DEBUG( "dying input" ); } /* This input has finished, ask it to die ! */ else if( p_playlist->p_input->b_error || p_playlist->p_input->b_eof ) { PL_DEBUG( "finished input" ); input_StopThread( p_playlist->p_input ); /* Select the next playlist item */ PL_UNLOCK return; } else if( p_playlist->p_input->i_state != INIT_S ) { PL_UNLOCK; p_playlist->i_vout_destroyed_date = ObjectGarbageCollector( p_playlist, VLC_OBJECT_VOUT, p_playlist->i_vout_destroyed_date ); p_playlist->i_sout_destroyed_date = ObjectGarbageCollector( p_playlist, VLC_OBJECT_SOUT, p_playlist->i_sout_destroyed_date ); PL_LOCK } } else { /* No input. Several cases * - No request, running status -> start new item * - No request, stopped status -> collect garbage * - Request, running requested -> start new item * - Request, stopped requested -> collect garbage */ if( (!p_playlist->request.b_request && p_playlist->status.i_status != PLAYLIST_STOPPED) || ( p_playlist->request.b_request && p_playlist->request.i_status != PLAYLIST_STOPPED ) ) { msg_Dbg( p_playlist, "starting new item" ); stats_TimerStart( p_playlist, "Playlist walk", STATS_TIMER_PLAYLIST_WALK ); p_item = playlist_NextItem( p_playlist ); stats_TimerStop( p_playlist, STATS_TIMER_PLAYLIST_WALK ); if( p_item == NULL ) { msg_Dbg( p_playlist, "nothing to play" ); if( b_playexit == VLC_TRUE ) { msg_Info( p_playlist, "end of playlist, exiting" ); p_playlist->p_libvlc->b_die = VLC_TRUE; } p_playlist->status.i_status = PLAYLIST_STOPPED; PL_UNLOCK return; } playlist_PlayItem( p_playlist, p_item ); } else { if( p_playlist->status.p_item && p_playlist->status.p_item->i_flags & PLAYLIST_REMOVE_FLAG ) { PL_DEBUG( "deleting item marked for deletion" ); playlist_ItemDelete( p_playlist->status.p_item ); p_playlist->status.p_item = NULL; } /* Collect garbage */ PL_UNLOCK p_playlist->i_sout_destroyed_date = ObjectGarbageCollector( p_playlist, VLC_OBJECT_SOUT, mdate() ); p_playlist->i_vout_destroyed_date = ObjectGarbageCollector( p_playlist, VLC_OBJECT_VOUT, mdate() ); PL_LOCK } } PL_UNLOCK } /** Playlist dying last loop */ void playlist_LastLoop( playlist_t *p_playlist ) { vlc_object_t *p_obj; /* If there is an input, kill it */ while( 1 ) { PL_LOCK if( p_playlist->p_input == NULL ) { PL_UNLOCK break; } if( p_playlist->p_input->b_dead ) { input_thread_t *p_input; /* Unlink current input */ p_input = p_playlist->p_input; p_playlist->p_input = NULL; PL_UNLOCK /* Destroy input */ input_DestroyThread( p_input ); /* Unlink current input (_after_ input_DestroyThread for vout * garbage collector)*/ vlc_object_detach( p_input ); /* Destroy object */ vlc_object_destroy( p_input ); continue; } else if( p_playlist->p_input->b_die ) { /* This input is dying, leave it alone */ ; } else if( p_playlist->p_input->b_error || p_playlist->p_input->b_eof ) { input_StopThread( p_playlist->p_input ); PL_UNLOCK continue; } else { p_playlist->p_input->b_eof = 1; } PL_UNLOCK msleep( INTF_IDLE_SLEEP ); } /* close all remaining sout */ while( ( p_obj = vlc_object_find( p_playlist, VLC_OBJECT_SOUT, FIND_CHILD ) ) ) { vlc_object_release( p_obj ); sout_DeleteInstance( (sout_instance_t*)p_obj ); } /* close all remaining vout */ while( ( p_obj = vlc_object_find( p_playlist, VLC_OBJECT_VOUT, FIND_CHILD ) ) ) { vlc_object_detach( p_obj ); vlc_object_release( p_obj ); vout_Destroy( (vout_thread_t *)p_obj ); } } /** Main loop for preparser queue */ void playlist_PreparseLoop( playlist_preparse_t *p_obj ) { playlist_t *p_playlist = (playlist_t *)p_obj->p_parent; int i_activity; vlc_mutex_lock( &p_obj->object_lock ); if( p_obj->i_waiting > 0 ) { input_item_t *p_current = p_obj->pp_waiting[0]; REMOVE_ELEM( p_obj->pp_waiting, p_obj->i_waiting, 0 ); vlc_mutex_unlock( &p_obj->object_lock ); PL_LOCK; if( p_current ) { vlc_bool_t b_preparsed = VLC_FALSE; if( strncmp( p_current->psz_uri, "http:", 5 ) && strncmp( p_current->psz_uri, "rtsp:", 5 ) && strncmp( p_current->psz_uri, "udp:", 4 ) && strncmp( p_current->psz_uri, "mms:", 4 ) && strncmp( p_current->psz_uri, "cdda:", 4 ) && strncmp( p_current->psz_uri, "dvd:", 4 ) && strncmp( p_current->psz_uri, "v4l:", 4 ) && strncmp( p_current->psz_uri, "dshow:", 6 ) ) { b_preparsed = VLC_TRUE; stats_TimerStart( p_playlist, "Preparse run", STATS_TIMER_PREPARSE ); PL_UNLOCK; input_Preparse( p_playlist, p_current ); PL_LOCK; stats_TimerStop( p_playlist, STATS_TIMER_PREPARSE ); } PL_UNLOCK; if( b_preparsed ) { var_SetInteger( p_playlist, "item-change", p_current->i_id ); } vlc_gc_decref( p_current ); /* Add to secondary preparse queue */ PL_LOCK vlc_mutex_lock( &p_playlist->p_secondary_preparse->object_lock ); INSERT_ELEM( p_playlist->p_secondary_preparse->pp_waiting, p_playlist->p_secondary_preparse->i_waiting, p_playlist->p_secondary_preparse->i_waiting, p_current ); vlc_gc_incref( p_current ); vlc_mutex_unlock( &p_playlist->p_secondary_preparse->object_lock ); PL_UNLOCK } else { vlc_mutex_unlock( &p_playlist->object_lock ); } vlc_mutex_lock( &p_obj->object_lock ); i_activity = var_GetInteger( p_playlist, "activity" ); if( i_activity < 0 ) i_activity = 0; vlc_mutex_unlock( &p_obj->object_lock ); msleep( (i_activity+1) * 1000 ); return; } vlc_mutex_unlock( &p_obj->object_lock ); } /** Main loop for secondary preparser queue */ void playlist_SecondaryPreparseLoop( playlist_preparse_t *p_obj ) { playlist_t *p_playlist = (playlist_t *)p_obj->p_parent; vlc_mutex_lock( &p_obj->object_lock ); if( p_obj->i_waiting > 0 ) { input_item_t *p_current = p_obj->pp_waiting[0]; REMOVE_ELEM( p_obj->pp_waiting, p_obj->i_waiting, 0 ); vlc_mutex_unlock( &p_obj->object_lock ); if( p_current ) { input_SecondaryPreparse( p_playlist, p_current ); var_SetInteger( p_playlist, "item-change", p_current->i_id ); vlc_gc_decref( p_current ); } else { vlc_mutex_unlock( &p_playlist->object_lock ); } return; } vlc_mutex_unlock( &p_obj->object_lock ); } static void VariablesInit( playlist_t *p_playlist ) { vlc_value_t val; /* These variables control updates */ var_Create( p_playlist, "intf-change", VLC_VAR_BOOL ); val.b_bool = VLC_TRUE; var_Set( p_playlist, "intf-change", val ); var_Create( p_playlist, "item-change", VLC_VAR_INTEGER ); val.i_int = -1; var_Set( p_playlist, "item-change", val ); var_Create( p_playlist, "item-deleted", VLC_VAR_INTEGER ); val.i_int = -1; var_Set( p_playlist, "item-deleted", val ); var_Create( p_playlist, "item-append", VLC_VAR_ADDRESS ); var_Create( p_playlist, "playlist-current", VLC_VAR_INTEGER ); val.i_int = -1; var_Set( p_playlist, "playlist-current", val ); var_Create( p_playlist, "intf-popupmenu", VLC_VAR_BOOL ); var_Create( p_playlist, "intf-show", VLC_VAR_BOOL ); val.b_bool = VLC_TRUE; var_Set( p_playlist, "intf-show", val ); var_Create( p_playlist, "activity", VLC_VAR_INTEGER ); var_SetInteger( p_playlist, "activity", 0 ); /* Variables to control playback */ var_CreateGetBool( p_playlist, "play-and-stop" ); var_CreateGetBool( p_playlist, "play-and-exit" ); var_CreateGetBool( p_playlist, "random" ); var_CreateGetBool( p_playlist, "repeat" ); var_CreateGetBool( p_playlist, "loop" ); }