X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fplaylist%2Fthread.c;h=a87881c499301fde2ade3ff9406f8729ef52a51e;hb=12ade3e3bc975d5426ba4af155b7372c31093b31;hp=8d2bd71c66fc827aa23d7d78121827280272cd61;hpb=719f576184819f07b1807f8cc3e814ee4321fbaf;p=vlc diff --git a/src/playlist/thread.c b/src/playlist/thread.c index 8d2bd71c66..a87881c499 100644 --- a/src/playlist/thread.c +++ b/src/playlist/thread.c @@ -25,175 +25,567 @@ # include "config.h" #endif -#include +#include + +#include #include #include #include #include +#include +#include "stream_output/stream_output.h" #include "playlist_internal.h" /***************************************************************************** * Local prototypes *****************************************************************************/ -static void RunControlThread ( playlist_t * ); -static void RunPreparse( playlist_preparse_t * ); -static void RunFetcher( playlist_fetcher_t * ); -static void PreparseDestructor( vlc_object_t * ); -static void FetcherDestructor( vlc_object_t * ); +static void *Thread ( void * ); /***************************************************************************** * Main functions for the global thread *****************************************************************************/ /** - * Create the main playlist thread + * Create the main playlist threads. * Additionally to the playlist, this thread controls : * - Statistics * - VLM * \param p_parent * \return an object with a started thread */ -void __playlist_ThreadCreate( vlc_object_t *p_parent ) +void playlist_Activate( playlist_t *p_playlist ) { - playlist_t *p_playlist = playlist_Create( p_parent ); - if( !p_playlist ) return; + /* */ + playlist_private_t *p_sys = pl_priv(p_playlist); - // Preparse - p_playlist->p_preparse = vlc_object_create( p_playlist, - sizeof( playlist_preparse_t ) ); - p_playlist->p_preparse->psz_object_name = "preparser"; - if( !p_playlist->p_preparse ) + /* Start the playlist thread */ + if( vlc_clone( &p_sys->thread, Thread, p_playlist, + VLC_THREAD_PRIORITY_LOW ) ) { - msg_Err( p_playlist, "unable to create preparser" ); - vlc_object_release( p_playlist ); - return; + msg_Err( p_playlist, "cannot spawn playlist thread" ); } - p_playlist->p_preparse->i_waiting = 0; - p_playlist->p_preparse->pp_waiting = NULL; + msg_Dbg( p_playlist, "Activated" ); +} + +void playlist_Deactivate( playlist_t *p_playlist ) +{ + /* */ + playlist_private_t *p_sys = pl_priv(p_playlist); - vlc_object_set_destructor( p_playlist->p_preparse, PreparseDestructor ); + msg_Dbg( p_playlist, "Deactivate" ); - vlc_object_attach( p_playlist->p_preparse, p_playlist ); - if( vlc_thread_create( p_playlist->p_preparse, "preparser", - RunPreparse, VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) ) + PL_LOCK; + vlc_object_kill( p_playlist ); + vlc_cond_signal( &p_sys->signal ); + PL_UNLOCK; + + vlc_join( p_sys->thread, NULL ); + assert( !p_sys->p_input ); + + /* release input resources */ + if( p_sys->p_input_resource ) { - msg_Err( p_playlist, "cannot spawn preparse thread" ); - vlc_object_release( p_playlist->p_preparse ); - return; + input_resource_Terminate( p_sys->p_input_resource ); + input_resource_Release( p_sys->p_input_resource ); } + p_sys->p_input_resource = NULL; + + if( var_InheritBool( p_playlist, "media-library" ) ) + playlist_MLDump( p_playlist ); + + PL_LOCK; + + /* Release the current node */ + set_current_status_node( p_playlist, NULL ); + + /* Release the current item */ + set_current_status_item( p_playlist, NULL ); + + PL_UNLOCK; + + msg_Dbg( p_playlist, "Deactivated" ); +} + +/* */ + +/* Input Callback */ +static int InputEvent( vlc_object_t *p_this, char const *psz_cmd, + vlc_value_t oldval, vlc_value_t newval, void *p_data ) +{ + VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); + playlist_t *p_playlist = p_data; + + if( newval.i_int != INPUT_EVENT_STATE && + newval.i_int != INPUT_EVENT_DEAD ) + return VLC_SUCCESS; + + PL_LOCK; - // Secondary Preparse - p_playlist->p_fetcher = vlc_object_create( p_playlist, - sizeof( playlist_fetcher_t ) ); - p_playlist->p_fetcher->psz_object_name = "fetcher"; - if( !p_playlist->p_fetcher ) + /* XXX: signaling while not changing any parameter... suspicious... */ + vlc_cond_signal( &pl_priv(p_playlist)->signal ); + + PL_UNLOCK; + return VLC_SUCCESS; +} + +static void UpdateActivity( playlist_t *p_playlist, int i_delta ) +{ + PL_ASSERT_LOCKED; + + const int i_activity = var_GetInteger( p_playlist, "activity" ) ; + var_SetInteger( p_playlist, "activity", i_activity + i_delta ); +} + +/** + * Synchronise the current index of the playlist + * to match the index of the current item. + * + * \param p_playlist the playlist structure + * \param p_cur the current playlist item + * \return nothing + */ +static void ResyncCurrentIndex( playlist_t *p_playlist, playlist_item_t *p_cur ) +{ + PL_ASSERT_LOCKED; + + PL_DEBUG( "resyncing on %s", PLI_NAME( p_cur ) ); + /* Simply resync index */ + int i; + p_playlist->i_current_index = -1; + for( i = 0 ; i< p_playlist->current.i_size; i++ ) { - msg_Err( p_playlist, "unable to create secondary preparser" ); - vlc_object_release( p_playlist ); - return; + if( ARRAY_VAL( p_playlist->current, i ) == p_cur ) + { + p_playlist->i_current_index = i; + break; + } } - p_playlist->p_fetcher->i_waiting = 0; - p_playlist->p_fetcher->p_waiting = NULL; - p_playlist->p_fetcher->b_fetch_meta = var_CreateGetInteger( p_playlist, - "fetch-meta" ); - p_playlist->p_fetcher->i_art_policy = var_CreateGetInteger( p_playlist, - "album-art" ); + PL_DEBUG( "%s is at %i", PLI_NAME( p_cur ), p_playlist->i_current_index ); +} - vlc_object_set_destructor( p_playlist->p_fetcher, FetcherDestructor ); +static void ResetCurrentlyPlaying( playlist_t *p_playlist, + playlist_item_t *p_cur ) +{ + playlist_private_t *p_sys = pl_priv(p_playlist); - vlc_object_attach( p_playlist->p_fetcher, p_playlist ); - if( vlc_thread_create( p_playlist->p_fetcher, - "fetcher", - RunFetcher, - VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) ) + stats_TimerStart( p_playlist, "Items array build", + STATS_TIMER_PLAYLIST_BUILD ); + PL_DEBUG( "rebuilding array of current - root %s", + PLI_NAME( p_sys->status.p_node ) ); + ARRAY_RESET( p_playlist->current ); + p_playlist->i_current_index = -1; + for( playlist_item_t *p_next = NULL; ; ) { - msg_Err( p_playlist, "cannot spawn secondary preparse thread" ); - vlc_object_release( p_playlist->p_fetcher ); - return; + /** FIXME: this is *slow* */ + p_next = playlist_GetNextLeaf( p_playlist, + p_sys->status.p_node, + p_next, true, false ); + if( !p_next ) + break; + + if( p_next == p_cur ) + p_playlist->i_current_index = p_playlist->current.i_size; + ARRAY_APPEND( p_playlist->current, p_next); } + PL_DEBUG("rebuild done - %i items, index %i", p_playlist->current.i_size, + p_playlist->i_current_index); - // Start the thread - if( vlc_thread_create( p_playlist, "playlist", RunControlThread, - VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) ) + if( var_GetBool( p_playlist, "random" ) && ( p_playlist->current.i_size > 0 ) ) { - msg_Err( p_playlist, "cannot spawn playlist thread" ); - vlc_object_release( p_playlist ); - return; + /* Shuffle the array */ + for( unsigned j = p_playlist->current.i_size - 1; j > 0; j-- ) + { + unsigned i = vlc_lrand48() % (j+1); /* between 0 and j */ + playlist_item_t *p_tmp; + /* swap the two items */ + p_tmp = ARRAY_VAL(p_playlist->current, i); + ARRAY_VAL(p_playlist->current,i) = ARRAY_VAL(p_playlist->current,j); + ARRAY_VAL(p_playlist->current,j) = p_tmp; + } } - - /* The object has been initialized, now attach it */ - vlc_object_attach( p_playlist, p_parent ); - - return; + p_sys->b_reset_currently_playing = false; + stats_TimerStop( p_playlist, STATS_TIMER_PLAYLIST_BUILD ); } + /** - * Destroy the playlist global thread. + * Start the input for an item * - * Deinits all things controlled by the playlist global thread - * \param p_playlist the playlist thread to destroy - * \return VLC_SUCCESS or an error + * \param p_playlist the playlist object + * \param p_item the item to play + * \return nothing */ -int playlist_ThreadDestroy( playlist_t * p_playlist ) +static int PlayItem( playlist_t *p_playlist, playlist_item_t *p_item ) { - playlist_Destroy( p_playlist ); + playlist_private_t *p_sys = pl_priv(p_playlist); + input_item_t *p_input = p_item->p_input; + + PL_ASSERT_LOCKED; + + msg_Dbg( p_playlist, "creating new input thread" ); + + p_input->i_nb_played++; + set_current_status_item( p_playlist, p_item ); + + p_sys->status.i_status = PLAYLIST_RUNNING; + + UpdateActivity( p_playlist, DEFAULT_INPUT_ACTIVITY ); + + assert( p_sys->p_input == NULL ); + + if( !p_sys->p_input_resource ) + p_sys->p_input_resource = input_resource_New( VLC_OBJECT( p_playlist ) ); + input_thread_t *p_input_thread = input_Create( p_playlist, p_input, NULL, p_sys->p_input_resource ); + if( p_input_thread ) + { + p_sys->p_input = p_input_thread; + var_AddCallback( p_input_thread, "intf-event", InputEvent, p_playlist ); + + var_SetAddress( p_playlist, "input-current", p_input_thread ); + + if( input_Start( p_sys->p_input ) ) + { + vlc_object_release( p_input_thread ); + p_sys->p_input = p_input_thread = NULL; + } + } + + char *psz_uri = input_item_GetURI( p_item->p_input ); + if( psz_uri && ( !strncmp( psz_uri, "directory:", 10 ) || + !strncmp( psz_uri, "vlc:", 4 ) ) ) + { + free( psz_uri ); + return VLC_SUCCESS; + } + free( psz_uri ); + + /* TODO store art policy in playlist private data */ + if( var_GetInteger( p_playlist, "album-art" ) == ALBUM_ART_WHEN_PLAYED ) + { + bool b_has_art; + + char *psz_arturl, *psz_name; + psz_arturl = input_item_GetArtURL( p_input ); + psz_name = input_item_GetName( p_input ); + + /* p_input->p_meta should not be null after a successfull CreateThread */ + b_has_art = !EMPTY_STR( psz_arturl ); + + if( !b_has_art || strncmp( psz_arturl, "attachment://", 13 ) ) + { + PL_DEBUG( "requesting art for %s", psz_name ); + playlist_AskForArtEnqueue( p_playlist, p_input ); + } + free( psz_arturl ); + free( psz_name ); + } + /* FIXME: this is not safe !!*/ + PL_UNLOCK; + var_SetAddress( p_playlist, "item-current", p_input ); + PL_LOCK; + return VLC_SUCCESS; } /** - * Run the main control thread itself + * Compute the next playlist item depending on + * the playlist course mode (forward, backward, random, view,...). + * + * \param p_playlist the playlist object + * \return nothing */ -static void RunControlThread ( playlist_t *p_playlist ) +static playlist_item_t *NextItem( playlist_t *p_playlist ) { - int i_loops = 0; + playlist_private_t *p_sys = pl_priv(p_playlist); + playlist_item_t *p_new = NULL; + + /* Handle quickly a few special cases */ + /* No items to play */ + if( p_playlist->items.i_size == 0 ) + { + msg_Info( p_playlist, "playlist is empty" ); + return NULL; + } - /* Tell above that we're ready */ - vlc_thread_ready( p_playlist ); - while( !p_playlist->b_die ) + /* Start the real work */ + if( p_sys->request.b_request ) { - i_loops++; + p_new = p_sys->request.p_item; + int i_skip = p_sys->request.i_skip; + PL_DEBUG( "processing request item %s node %s skip %i", + PLI_NAME( p_sys->request.p_item ), + PLI_NAME( p_sys->request.p_node ), i_skip ); - playlist_MainLoop( p_playlist ); - if( p_playlist->b_cant_sleep ) + if( p_sys->request.p_node && + p_sys->request.p_node != get_current_status_node( p_playlist ) ) { - /* 100 ms is an acceptable delay for playlist operations */ - msleep( INTF_IDLE_SLEEP*2 ); + + set_current_status_node( p_playlist, p_sys->request.p_node ); + p_sys->request.p_node = NULL; + p_sys->b_reset_currently_playing = true; } + + /* If we are asked for a node, go to it's first child */ + if( i_skip == 0 && ( p_new == NULL || p_new->i_children != -1 ) ) + { + i_skip++; + if( p_new != NULL ) + { + p_new = playlist_GetNextLeaf( p_playlist, p_new, NULL, true, false ); + for( int i = 0; i < p_playlist->current.i_size; i++ ) + { + if( p_new == ARRAY_VAL( p_playlist->current, i ) ) + { + p_playlist->i_current_index = i; + i_skip = 0; + } + } + } + } + + if( p_sys->b_reset_currently_playing ) + /* A bit too bad to reset twice ... */ + ResetCurrentlyPlaying( p_playlist, p_new ); + else if( p_new ) + ResyncCurrentIndex( p_playlist, p_new ); else + p_playlist->i_current_index = -1; + + if( p_playlist->current.i_size && (i_skip > 0) ) { - PL_LOCK; - vlc_cond_wait( &p_playlist->object_wait, &p_playlist->object_lock ); - PL_UNLOCK; + if( p_playlist->i_current_index < -1 ) + p_playlist->i_current_index = -1; + for( int i = i_skip; i > 0 ; i-- ) + { + p_playlist->i_current_index++; + if( p_playlist->i_current_index >= p_playlist->current.i_size ) + { + PL_DEBUG( "looping - restarting at beginning of node" ); + p_playlist->i_current_index = 0; + } + } + p_new = ARRAY_VAL( p_playlist->current, + p_playlist->i_current_index ); } + else if( p_playlist->current.i_size && (i_skip < 0) ) + { + for( int i = i_skip; i < 0 ; i++ ) + { + p_playlist->i_current_index--; + if( p_playlist->i_current_index <= -1 ) + { + PL_DEBUG( "looping - restarting at end of node" ); + p_playlist->i_current_index = p_playlist->current.i_size-1; + } + } + p_new = ARRAY_VAL( p_playlist->current, + p_playlist->i_current_index ); + } + /* Clear the request */ + p_sys->request.b_request = false; } - playlist_LastLoop( p_playlist ); -} + /* "Automatic" item change ( next ) */ + else + { + bool b_loop = var_GetBool( p_playlist, "loop" ); + bool b_repeat = var_GetBool( p_playlist, "repeat" ); + bool b_playstop = var_GetBool( p_playlist, "play-and-stop" ); -/***************************************************************************** - * Preparse-specific functions - *****************************************************************************/ -static void RunPreparse ( playlist_preparse_t *p_obj ) -{ - /* Tell above that we're ready */ - vlc_thread_ready( p_obj ); - playlist_PreparseLoop( p_obj ); + /* Repeat and play/stop */ + if( b_repeat && get_current_status_item( p_playlist ) ) + { + msg_Dbg( p_playlist,"repeating item" ); + return get_current_status_item( p_playlist ); + } + if( b_playstop ) + { + msg_Dbg( p_playlist,"stopping (play and stop)" ); + return NULL; + } + + /* */ + if( get_current_status_item( p_playlist ) ) + { + playlist_item_t *p_parent = get_current_status_item( p_playlist ); + while( p_parent ) + { + if( p_parent->i_flags & PLAYLIST_SKIP_FLAG ) + { + msg_Dbg( p_playlist, "blocking item, stopping") ; + return NULL; + } + p_parent = p_parent->p_parent; + } + } + + PL_DEBUG( "changing item without a request (current %i/%i)", + p_playlist->i_current_index, p_playlist->current.i_size ); + /* Cant go to next from current item */ + if( get_current_status_item( p_playlist ) && + get_current_status_item( p_playlist )->i_flags & PLAYLIST_SKIP_FLAG ) + return NULL; + + if( p_sys->b_reset_currently_playing ) + ResetCurrentlyPlaying( p_playlist, + get_current_status_item( p_playlist ) ); + + p_playlist->i_current_index++; + assert( p_playlist->i_current_index <= p_playlist->current.i_size ); + if( p_playlist->i_current_index == p_playlist->current.i_size ) + { + if( !b_loop || p_playlist->current.i_size == 0 ) + return NULL; + p_playlist->i_current_index = 0; + } + PL_DEBUG( "using item %i", p_playlist->i_current_index ); + if ( p_playlist->current.i_size == 0 ) + return NULL; + + p_new = ARRAY_VAL( p_playlist->current, p_playlist->i_current_index ); + /* The new item can't be autoselected */ + if( p_new != NULL && p_new->i_flags & PLAYLIST_SKIP_FLAG ) + return NULL; + } + return p_new; } -static void RunFetcher( playlist_fetcher_t *p_obj ) +static int LoopInput( playlist_t *p_playlist ) { - /* Tell above that we're ready */ - vlc_thread_ready( p_obj ); - playlist_FetcherLoop( p_obj ); + playlist_private_t *p_sys = pl_priv(p_playlist); + input_thread_t *p_input = p_sys->p_input; + + if( !p_input ) + return VLC_EGENERIC; + + if( ( p_sys->request.b_request || !vlc_object_alive( p_playlist ) ) && !p_input->b_die ) + { + PL_DEBUG( "incoming request - stopping current input" ); + input_Stop( p_input, true ); + } + + /* This input is dead. Remove it ! */ + if( p_input->b_dead ) + { + PL_DEBUG( "dead input" ); + + PL_UNLOCK; + /* We can unlock as we return VLC_EGENERIC (no event will be lost) */ + + /* input_resource_t must be manipulated without playlist lock */ + if( !var_CreateGetBool( p_input, "sout-keep" ) ) + input_resource_TerminateSout( p_sys->p_input_resource ); + + /* The DelCallback must be issued without playlist lock */ + var_DelCallback( p_input, "intf-event", InputEvent, p_playlist ); + + PL_LOCK; + + p_sys->p_input = NULL; + vlc_thread_join( p_input ); + vlc_object_release( p_input ); + + UpdateActivity( p_playlist, -DEFAULT_INPUT_ACTIVITY ); + + return VLC_EGENERIC; + } + /* This input is dying, let it do */ + else if( p_input->b_die ) + { + PL_DEBUG( "dying input" ); + } + /* This input has finished, ask it to die ! */ + else if( p_input->b_error || p_input->b_eof ) + { + PL_DEBUG( "finished input" ); + input_Stop( p_input, false ); + } + return VLC_SUCCESS; } -static void PreparseDestructor( vlc_object_t * p_this ) +static void LoopRequest( playlist_t *p_playlist ) { - playlist_preparse_t * p_preparse = (playlist_preparse_t *)p_this; - free( p_preparse->pp_waiting ); + playlist_private_t *p_sys = pl_priv(p_playlist); + assert( !p_sys->p_input ); + + /* 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 + */ + const int i_status = p_sys->request.b_request ? + p_sys->request.i_status : p_sys->status.i_status; + + if( i_status == PLAYLIST_STOPPED || !vlc_object_alive( p_playlist ) ) + { + p_sys->status.i_status = PLAYLIST_STOPPED; + + if( p_sys->p_input_resource && + input_resource_HasVout( p_sys->p_input_resource ) ) + { + /* XXX We can unlock if we don't issue the wait as we will be + * call again without anything else done between the calls */ + PL_UNLOCK; + + /* input_resource_t must be manipulated without playlist lock */ + input_resource_TerminateVout( p_sys->p_input_resource ); + + PL_LOCK; + } + else + { + if( vlc_object_alive( p_playlist ) ) + vlc_cond_wait( &p_sys->signal, &p_sys->lock ); + } + return; + } + + playlist_item_t *p_item = NextItem( p_playlist ); + if( p_item ) + { + msg_Dbg( p_playlist, "starting new item" ); + PlayItem( p_playlist, p_item ); + return; + } + + msg_Dbg( p_playlist, "nothing to play" ); + p_sys->status.i_status = PLAYLIST_STOPPED; + + if( var_GetBool( p_playlist, "play-and-exit" ) ) + { + msg_Info( p_playlist, "end of playlist, exiting" ); + libvlc_Quit( p_playlist->p_libvlc ); + } } -static void FetcherDestructor( vlc_object_t * p_this ) +/** + * Run the main control thread itself + */ +static void *Thread ( void *data ) { - playlist_fetcher_t * p_fetcher = (playlist_fetcher_t *)p_this; - free( p_fetcher->p_waiting ); + playlist_t *p_playlist = data; + playlist_private_t *p_sys = pl_priv(p_playlist); + + playlist_Lock( p_playlist ); + while( vlc_object_alive( p_playlist ) || p_sys->p_input ) + { + /* FIXME: what's that ! */ + if( p_sys->b_reset_currently_playing && + mdate() - p_sys->last_rebuild_date > 30000 ) // 30 ms + { + ResetCurrentlyPlaying( p_playlist, + get_current_status_item( p_playlist ) ); + p_sys->last_rebuild_date = mdate(); + } + + /* If there is an input, check that it doesn't need to die. */ + while( !LoopInput( p_playlist ) ) + vlc_cond_wait( &p_sys->signal, &p_sys->lock ); + + LoopRequest( p_playlist ); + } + playlist_Unlock( p_playlist ); + + return NULL; } +