engine.c 25.3 KB
Newer Older
1 2 3
/*****************************************************************************
 * engine.c : Run the playlist and handle its control
 *****************************************************************************
4
 * Copyright (C) 1999-2008 the VideoLAN team
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
 *
 * Authors: Samuel Hocevar <sam@zoy.org>
 *          Clément Stenac <zorglub@videolan.org>
 *
 * 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.
 *****************************************************************************/
23

24 25 26 27
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

28
#include <stddef.h>
29
#include <assert.h>
30
#include <vlc_common.h>
Clément Stenac's avatar
Clément Stenac committed
31 32 33
#include <vlc_sout.h>
#include <vlc_playlist.h>
#include <vlc_interface.h>
34
#include "playlist_internal.h"
Clément Stenac's avatar
Clément Stenac committed
35
#include "stream_output/stream_output.h" /* sout_DeleteInstance */
36 37 38 39 40

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
static void VariablesInit( playlist_t *p_playlist );
41
static void playlist_Destructor( vlc_object_t * p_this );
42

Clément Stenac's avatar
Clément Stenac committed
43 44 45
static int RandomCallback( vlc_object_t *p_this, char const *psz_cmd,
                           vlc_value_t oldval, vlc_value_t newval, void *a )
{
46 47
    (void)psz_cmd; (void)oldval; (void)newval; (void)a;

48
    pl_priv((playlist_t*)p_this)->b_reset_currently_playing = true;
49
    playlist_Signal( ((playlist_t*)p_this) );
Clément Stenac's avatar
Clément Stenac committed
50 51 52
    return VLC_SUCCESS;
}

53 54 55 56 57 58 59 60 61
/**
 * 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 )
{
62
    static const char playlist_name[] = "playlist";
63
    playlist_t *p_playlist;
64
    playlist_private_t *p;
65
    bool b_save;
66 67

    /* Allocate structure */
68 69 70
    p = vlc_custom_create( p_parent, sizeof( *p ),
                           VLC_OBJECT_GENERIC, playlist_name );
    if( !p )
71
        return NULL;
72

73 74
    assert( offsetof( playlist_private_t, public_data ) == 0 );
    p_playlist = &p->public_data;
75
    TAB_INIT( pl_priv(p_playlist)->i_sds, pl_priv(p_playlist)->pp_sds );
76

77
    libvlc_priv(p_parent->p_libvlc)->p_playlist = p_playlist;
78 79 80 81

    VariablesInit( p_playlist );

    /* Initialise data structures */
82
    pl_priv(p_playlist)->i_last_playlist_id = 0;
83
    pl_priv(p_playlist)->p_input = NULL;
84

85
    pl_priv(p_playlist)->gc_date = 0;
86
    pl_priv(p_playlist)->b_cant_sleep = false;
87

Clément Stenac's avatar
Clément Stenac committed
88 89
    ARRAY_INIT( p_playlist->items );
    ARRAY_INIT( p_playlist->all_items );
90
    ARRAY_INIT( pl_priv(p_playlist)->items_to_delete );
Clément Stenac's avatar
Clément Stenac committed
91
    ARRAY_INIT( p_playlist->current );
92

Clément Stenac's avatar
Clément Stenac committed
93
    p_playlist->i_current_index = 0;
94
    pl_priv(p_playlist)->b_reset_currently_playing = true;
95
    pl_priv(p_playlist)->last_rebuild_date = 0;
Clément Stenac's avatar
Clément Stenac committed
96

97
    pl_priv(p_playlist)->b_tree = var_CreateGetBool( p_playlist, "playlist-tree" );
98

99
    pl_priv(p_playlist)->b_doing_ml = false;
100

101
    pl_priv(p_playlist)->b_auto_preparse =
102
                        var_CreateGetBool( p_playlist, "auto-preparse" ) ;
103

104
    PL_LOCK; /* playlist_NodeCreate will check for it */
105
    p_playlist->p_root_category = playlist_NodeCreate( p_playlist, NULL, NULL,
106
                                    0, NULL );
107
    p_playlist->p_root_onelevel = playlist_NodeCreate( p_playlist, NULL, NULL,
108
                                    0, p_playlist->p_root_category->p_input );
109
    PL_UNLOCK;
110

111 112 113
    if( !p_playlist->p_root_category || !p_playlist->p_root_onelevel )
        return NULL;

114
    /* Create playlist and media library */
115
    PL_LOCK; /* playlist_NodesPairCreate will check for it */
116 117
    playlist_NodesPairCreate( p_playlist, _( "Playlist" ),
                            &p_playlist->p_local_category,
118
                            &p_playlist->p_local_onelevel, false );
119
    PL_UNLOCK;
120

121 122 123
    p_playlist->p_local_category->i_flags |= PLAYLIST_RO_FLAG;
    p_playlist->p_local_onelevel->i_flags |= PLAYLIST_RO_FLAG;

124 125 126 127 128
    if( !p_playlist->p_local_category || !p_playlist->p_local_onelevel ||
        !p_playlist->p_local_category->p_input ||
        !p_playlist->p_local_onelevel->p_input )
        return NULL;

129 130
    if( config_GetInt( p_playlist, "media-library") )
    {
131
        PL_LOCK; /* playlist_NodesPairCreate will check for it */
132 133
        playlist_NodesPairCreate( p_playlist, _( "Media Library" ),
                            &p_playlist->p_ml_category,
134
                            &p_playlist->p_ml_onelevel, false );
135
        PL_UNLOCK;
136 137 138 139

        if(!p_playlist->p_ml_category || !p_playlist->p_ml_onelevel)
            return NULL;

140 141 142 143 144 145 146
        p_playlist->p_ml_category->i_flags |= PLAYLIST_RO_FLAG;
        p_playlist->p_ml_onelevel->i_flags |= PLAYLIST_RO_FLAG;
    }
    else
    {
        p_playlist->p_ml_category = p_playlist->p_ml_onelevel = NULL;
    }
147 148

    /* Initial status */
149 150 151 152
    pl_priv(p_playlist)->status.p_item = NULL;
    pl_priv(p_playlist)->status.p_node = p_playlist->p_local_onelevel;
    pl_priv(p_playlist)->request.b_request = false;
    pl_priv(p_playlist)->status.i_status = PLAYLIST_STOPPED;
153

154 155
    b_save = pl_priv(p_playlist)->b_auto_preparse;
    pl_priv(p_playlist)->b_auto_preparse = false;
156
    playlist_MLLoad( p_playlist );
157
    pl_priv(p_playlist)->b_auto_preparse = true;
158

159 160
    vlc_object_set_destructor( p_playlist, playlist_Destructor );

161 162 163
    return p_playlist;
}

164 165 166 167 168 169 170
/**
 * Destroy playlist
 *
 * Destroy a playlist structure.
 * \param p_playlist the playlist object
 * \return nothing
 */
171 172 173 174 175

static void playlist_Destructor( vlc_object_t * p_this )
{
    playlist_t * p_playlist = (playlist_t *)p_this;

176
    /* Destroy the item preparser */
177
    playlist_preparse_t *p_preparse = &pl_priv(p_playlist)->preparse;
178
    if (p_preparse->up)
179
    {
180 181
        vlc_cancel (p_preparse->thread);
        vlc_join (p_preparse->thread, NULL);
182
    }
183 184 185 186 187 188 189
    while (p_preparse->i_waiting > 0)
    {   /* Any left-over unparsed item? */
        vlc_gc_decref (p_preparse->pp_waiting[0]);
        REMOVE_ELEM (p_preparse->pp_waiting, p_preparse->i_waiting, 0);
    }
    vlc_cond_destroy (&p_preparse->wait);
    vlc_mutex_destroy (&p_preparse->lock);
190

191
    /* Destroy the item meta-infos fetcher */
192 193
    playlist_fetcher_t *p_fetcher = &pl_priv(p_playlist)->fetcher;
    if (p_fetcher->up)
194
    {
195 196 197 198 199 200 201
        vlc_cancel (p_fetcher->thread);
        vlc_join (p_fetcher->thread, NULL);
    }
    while (p_fetcher->i_waiting > 0)
    {   /* Any left-over unparsed item? */
        vlc_gc_decref (p_fetcher->pp_waiting[0]);
        REMOVE_ELEM (p_fetcher->pp_waiting, p_fetcher->i_waiting, 0);
202
    }
203 204 205
    vlc_cond_destroy (&p_fetcher->wait);
    vlc_mutex_destroy (&p_fetcher->lock);

206
    msg_Dbg( p_this, "Destroyed" );
207 208
}

209
/* Destroy remaining objects */
210
static void ObjectGarbageCollector( playlist_t *p_playlist, bool b_force )
211
{
212
    if( !b_force )
213
    {
214
        if( mdate() - pl_priv(p_playlist)->gc_date < 1000000 )
215
        {
216
           pl_priv(p_playlist)->b_cant_sleep = true;
217 218
            return;
        }
219
        else if( pl_priv(p_playlist)->gc_date == 0 )
220
            return;
221
    }
222

223
    pl_priv(p_playlist)->b_cant_sleep = false;
224 225
}

226 227 228 229 230 231 232 233
/* Input Callback */
static void input_state_changed( const vlc_event_t * event, void * data )
{
    (void)event;
    playlist_t * p_playlist = data;
    playlist_Signal( p_playlist );
}

234 235 236 237 238 239
/* Input Callback */
static void input_selected_stream_changed( const vlc_event_t * event, void * data )
{
    (void)event;
    playlist_t * p_playlist = data;
    PL_LOCK;
240
    pl_priv(p_playlist)->gc_date = mdate();
241 242 243 244
    vlc_object_signal_unlocked( p_playlist );
    PL_UNLOCK;
}

245 246 247
/* Internals */
void playlist_release_current_input( playlist_t * p_playlist )
{
248
    PL_ASSERT_LOCKED;
249

250
    if( !pl_priv(p_playlist)->p_input ) return;
251

252
    input_thread_t * p_input = pl_priv(p_playlist)->p_input;
253 254 255 256
    vlc_event_manager_t * p_em = input_get_event_manager( p_input );

    vlc_event_detach( p_em, vlc_InputStateChanged,
                      input_state_changed, p_playlist );
257 258
    vlc_event_detach( p_em, vlc_InputSelectedStreamChanged,
                      input_selected_stream_changed, p_playlist );
259
    pl_priv(p_playlist)->p_input = NULL;
260 261 262 263

    /* Release the playlist lock, because we may get stuck
     * in vlc_object_release() for some time. */
    PL_UNLOCK;
264
    vlc_thread_join( p_input );
265 266 267 268 269 270 271
    vlc_object_release( p_input );
    PL_LOCK;
}

void playlist_set_current_input(
    playlist_t * p_playlist, input_thread_t * p_input )
{
272
    PL_ASSERT_LOCKED;
273 274 275 276 277

    playlist_release_current_input( p_playlist );

    if( p_input )
    {
278
        vlc_object_hold( p_input );
279
        pl_priv(p_playlist)->p_input = p_input;
280 281 282
        vlc_event_manager_t * p_em = input_get_event_manager( p_input );
        vlc_event_attach( p_em, vlc_InputStateChanged,
                          input_state_changed, p_playlist );
283 284
        vlc_event_attach( p_em, vlc_InputSelectedStreamChanged,
                          input_selected_stream_changed, p_playlist );
285 286 287
    }
}

288 289 290 291 292 293
/** Get current playing input.
 */
input_thread_t * playlist_CurrentInput( playlist_t * p_playlist )
{
    input_thread_t * p_input;
    PL_LOCK;
294
    p_input = pl_priv(p_playlist)->p_input;
295
    if( p_input ) vlc_object_hold( p_input );
296 297 298 299
    PL_UNLOCK;
    return p_input;
}

300 301 302 303
/**
 * @}
 */

304 305 306 307 308 309
/** Accessor for status item and status nodes.
 */
playlist_item_t * get_current_status_item( playlist_t * p_playlist )
{
    PL_ASSERT_LOCKED;

310
    return pl_priv(p_playlist)->status.p_item;
311 312 313 314 315 316
}

playlist_item_t * get_current_status_node( playlist_t * p_playlist )
{
    PL_ASSERT_LOCKED;

317
    return pl_priv(p_playlist)->status.p_node;
318 319 320 321 322 323 324
}

void set_current_status_item( playlist_t * p_playlist,
    playlist_item_t * p_item )
{
    PL_ASSERT_LOCKED;

325 326 327
    if( pl_priv(p_playlist)->status.p_item &&
        pl_priv(p_playlist)->status.p_item->i_flags & PLAYLIST_REMOVE_FLAG &&
        pl_priv(p_playlist)->status.p_item != p_item )
328
    {
329
        /* It's unsafe given current design to delete a playlist item :(
330
        playlist_ItemDelete( pl_priv(p_playlist)->status.p_item ); */
331
    }
332
    pl_priv(p_playlist)->status.p_item = p_item;
333 334 335 336 337 338 339
}

void set_current_status_node( playlist_t * p_playlist,
    playlist_item_t * p_node )
{
    PL_ASSERT_LOCKED;

340 341 342
    if( pl_priv(p_playlist)->status.p_node &&
        pl_priv(p_playlist)->status.p_node->i_flags & PLAYLIST_REMOVE_FLAG &&
        pl_priv(p_playlist)->status.p_node != p_node )
343
    {
344
        /* It's unsafe given current design to delete a playlist item :(
345
        playlist_ItemDelete( pl_priv(p_playlist)->status.p_node ); */
346
    }
347
    pl_priv(p_playlist)->status.p_node = p_node;
348 349
}

350 351 352
/**
 * Main loop
 *
Laurent Aimar's avatar
Laurent Aimar committed
353 354
 * Main loop for the playlist. It should be entered with the
 * playlist lock (otherwise input event may be lost)
355 356 357
 * \param p_playlist the playlist object
 * \return nothing
 */
358 359 360
void playlist_MainLoop( playlist_t *p_playlist )
{
    playlist_item_t *p_item = NULL;
361
    bool b_playexit = var_GetBool( p_playlist, "play-and-exit" );
Laurent Aimar's avatar
Laurent Aimar committed
362 363

    PL_ASSERT_LOCKED;
364

365
    if( pl_priv(p_playlist)->b_reset_currently_playing &&
366
        mdate() - pl_priv(p_playlist)->last_rebuild_date > 30000 ) // 30 ms
367
    {
368
        ResetCurrentlyPlaying( p_playlist, var_GetBool( p_playlist, "random" ),
369
                               get_current_status_item( p_playlist ) );
370
        pl_priv(p_playlist)->last_rebuild_date = mdate();
371
    }
372

373
check_input:
374
    /* If there is an input, check that it doesn't need to die. */
375
    if( pl_priv(p_playlist)->p_input )
376
    {
377
        if( pl_priv(p_playlist)->request.b_request && !pl_priv(p_playlist)->p_input->b_die )
378 379
        {
            PL_DEBUG( "incoming request - stopping current input" );
380
            input_StopThread( pl_priv(p_playlist)->p_input );
381 382
        }

383
        /* This input is dead. Remove it ! */
384
        if( pl_priv(p_playlist)->p_input->b_dead )
385 386 387
        {
            int i_activity;
            input_thread_t *p_input;
388
            sout_instance_t **pp_sout = &pl_priv(p_playlist)->p_sout;
389

390
            PL_DEBUG( "dead input" );
391

392
            p_input = pl_priv(p_playlist)->p_input;
393

394 395 396
            assert( *pp_sout == NULL );
            if( var_CreateGetBool( p_input, "sout-keep" ) )
                *pp_sout = input_DetachSout( p_input );
397 398

            /* Destroy input */
399
            playlist_release_current_input( p_playlist );
400

401
            pl_priv(p_playlist)->gc_date = mdate();
402
            pl_priv(p_playlist)->b_cant_sleep = true;
403

404
            i_activity= var_GetInteger( p_playlist, "activity" );
405 406
            var_SetInteger( p_playlist, "activity", i_activity -
                            DEFAULT_INPUT_ACTIVITY );
407

408
            goto check_input;
409 410
        }
        /* This input is dying, let it do */
411
        else if( pl_priv(p_playlist)->p_input->b_die )
412
        {
413
            PL_DEBUG( "dying input" );
414
            PL_UNLOCK;
415
            msleep( INTF_IDLE_SLEEP );
416
            PL_LOCK;
417
            goto check_input;
418 419
        }
        /* This input has finished, ask it to die ! */
420 421
        else if( pl_priv(p_playlist)->p_input->b_error
                  || pl_priv(p_playlist)->p_input->b_eof )
422
        {
423
            PL_DEBUG( "finished input" );
424
            input_StopThread( pl_priv(p_playlist)->p_input );
425 426
            /* No need to wait here, we'll wait in the p_input->b_die case */
            goto check_input;
427
        }
428
        else if( pl_priv(p_playlist)->p_input->i_state != INIT_S )
429
        {
430
            ObjectGarbageCollector( p_playlist, false );
431 432 433 434 435 436 437 438 439
        }
    }
    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
440
        */
441 442
        int i_status = pl_priv(p_playlist)->request.b_request ?
            pl_priv(p_playlist)->request.i_status : pl_priv(p_playlist)->status.i_status;
Rafaël Carré's avatar
Rafaël Carré committed
443
        if( i_status != PLAYLIST_STOPPED )
444 445 446
        {
            msg_Dbg( p_playlist, "starting new item" );
            p_item = playlist_NextItem( p_playlist );
447

448 449
            if( p_item == NULL )
            {
450
                msg_Dbg( p_playlist, "nothing to play" );
451
                pl_priv(p_playlist)->status.i_status = PLAYLIST_STOPPED;
452

453
                if( b_playexit == true )
454 455
                {
                    msg_Info( p_playlist, "end of playlist, exiting" );
456
                    vlc_object_kill( p_playlist->p_libvlc );
457
                }
458
                ObjectGarbageCollector( p_playlist, true );
459
                return;
Rémi Duraffort's avatar
Rémi Duraffort committed
460 461
            }
            playlist_PlayItem( p_playlist, p_item );
Laurent Aimar's avatar
Laurent Aimar committed
462
            /* playlist_PlayItem loose input event, we need to recheck */
Laurent Aimar's avatar
Laurent Aimar committed
463
            goto check_input;
Rémi Duraffort's avatar
Rémi Duraffort committed
464 465 466
        }
        else
        {
467
            const bool b_gc_forced = pl_priv(p_playlist)->status.i_status != PLAYLIST_STOPPED;
468

469
            pl_priv(p_playlist)->status.i_status = PLAYLIST_STOPPED;
470

471
            /* Collect garbage */
472
            ObjectGarbageCollector( p_playlist, b_gc_forced );
473
        }
474 475 476
    }
}

477 478 479 480 481 482 483
/**
 * Last loop
 *
 * The playlist is dying so do the last loop
 * \param p_playlist the playlist object
 * \return nothing
*/
484 485 486 487 488
void playlist_LastLoop( playlist_t *p_playlist )
{
    /* If there is an input, kill it */
    while( 1 )
    {
489
        PL_LOCK;
490
        if( pl_priv(p_playlist)->p_input == NULL )
491
        {
492
            PL_UNLOCK;
493 494 495
            break;
        }

496
        if( pl_priv(p_playlist)->p_input->b_dead )
497
        {
498 499
            /* remove input */
            playlist_release_current_input( p_playlist );
500

501 502 503
            /* sout-keep: no need to anything here.
             * The last input will destroy its sout, if any, by itself */

504
            PL_UNLOCK;
505 506
            continue;
        }
507
        else if( pl_priv(p_playlist)->p_input->b_die )
508 509 510 511
        {
            /* This input is dying, leave it alone */
            ;
        }
512
        else if( pl_priv(p_playlist)->p_input->b_error || pl_priv(p_playlist)->p_input->b_eof )
513
        {
514
            input_StopThread( pl_priv(p_playlist)->p_input );
515
            PL_UNLOCK;
516 517 518 519
            continue;
        }
        else
        {
520
            pl_priv(p_playlist)->p_input->b_eof = 1;
521
        }
522
        PL_UNLOCK;
523 524 525 526

        msleep( INTF_IDLE_SLEEP );
    }

527
#ifdef ENABLE_SOUT
528
    /* close the remaining sout-keep (if there was no input atm) */
529
    sout_instance_t *p_sout = pl_priv(p_playlist)->p_sout;
530 531
    if (p_sout)
        sout_DeleteInstance( p_sout );
532
#endif
533

534 535 536 537 538 539 540
    /* Core should have terminated all SDs before the playlist */
    /* TODO: It fails to do so when not playing anything -- Courmisch */
    playlist_ServicesDiscoveryKillAll( p_playlist );
    playlist_MLDump( p_playlist );

    PL_LOCK;

541 542 543 544 545
    /* Release the current node */
    set_current_status_node( p_playlist, NULL );

    /* Release the current item */
    set_current_status_item( p_playlist, NULL );
546

547 548
    FOREACH_ARRAY( playlist_item_t *p_del, p_playlist->all_items )
        free( p_del->pp_children );
Rafaël Carré's avatar
Rafaël Carré committed
549
        vlc_gc_decref( p_del->p_input );
550 551 552
        free( p_del );
    FOREACH_END();
    ARRAY_RESET( p_playlist->all_items );
553
    FOREACH_ARRAY( playlist_item_t *p_del, pl_priv(p_playlist)->items_to_delete )
554 555 556 557
        free( p_del->pp_children );
        vlc_gc_decref( p_del->p_input );
        free( p_del );
    FOREACH_END();
558
    ARRAY_RESET( pl_priv(p_playlist)->items_to_delete );
559 560 561 562 563

    ARRAY_RESET( p_playlist->items );
    ARRAY_RESET( p_playlist->current );

    PL_UNLOCK;
564 565
}

566
/**
567
 * Preparse queue loop
568
 *
569 570
 * @param p_obj preparse structure
 * @return never
571
 */
572
void *playlist_PreparseLoop( void *data )
573
{
574
    playlist_preparse_t *p_preparse = data;
575 576
    playlist_t *p_playlist = &((playlist_private_t *)(((char *)p_preparse)
             - offsetof(playlist_private_t, preparse)))->public_data;
577

578
    for( ;; )
579
    {
580
        input_item_t *p_current;
581

582 583 584 585 586 587 588 589 590
        vlc_mutex_lock( &p_preparse->lock );
        mutex_cleanup_push( &p_preparse->lock );

        while( p_preparse->i_waiting == 0 )
            vlc_cond_wait( &p_preparse->wait, &p_preparse->lock );

        p_current = p_preparse->pp_waiting[0];
        REMOVE_ELEM( p_preparse->pp_waiting, p_preparse->i_waiting, 0 );
        vlc_cleanup_run( );
591

592 593
        if( p_current )
        {
594 595
            int canc = vlc_savecancel ();
            PL_LOCK;
596
            if( p_current->i_type == ITEM_TYPE_FILE )
597 598 599
            {
                stats_TimerStart( p_playlist, "Preparse run",
                                  STATS_TIMER_PREPARSE );
600
                /* Do not preparse if it is already done (like by playing it) */
601
                if( !input_item_IsPreparsed( p_current ) )
602 603 604 605 606
                {
                    PL_UNLOCK;
                    input_Preparse( p_playlist, p_current );
                    PL_LOCK;
                }
607
                stats_TimerStop( p_playlist, STATS_TIMER_PREPARSE );
608
                PL_UNLOCK;
609
                input_item_SetPreparsed( p_current, true );
610
                var_SetInteger( p_playlist, "item-change", p_current->i_id );
611
                PL_LOCK;
612
            }
Clément Stenac's avatar
Clément Stenac committed
613
            /* If we haven't retrieved enough meta, add to secondary queue
614 615 616
             * which will run the "meta fetchers".
             * This only checks for meta, not for art
             * \todo don't do this for things we won't get meta for, like vids
617
             */
618 619
            char *psz_arturl = input_item_GetArtURL( p_current );
            char *psz_name = input_item_GetName( p_current );
620
            playlist_fetcher_t *p_fetcher = &pl_priv(p_playlist)->fetcher;
621 622
            if( p_fetcher->i_art_policy == ALBUM_ART_ALL &&
                ( !psz_arturl || strncmp( psz_arturl, "file://", 7 ) ) )
623
            {
624
                PL_DEBUG("meta ok for %s, need to fetch art", psz_name );
625 626 627 628 629
                vlc_mutex_lock( &p_fetcher->lock );
                INSERT_ELEM( p_fetcher->pp_waiting, p_fetcher->i_waiting,
                             p_fetcher->i_waiting, p_current);
                vlc_cond_signal( &p_fetcher->wait );
                vlc_mutex_unlock( &p_fetcher->lock );
Clément Stenac's avatar
Clément Stenac committed
630
            }
631
            else
632 633
            {
                PL_DEBUG( "no fetch required for %s (art currently %s)",
634
                          psz_name, psz_arturl );
Clément Stenac's avatar
Clément Stenac committed
635
                vlc_gc_decref( p_current );
636
            }
637 638
            free( psz_name );
            free( psz_arturl );
639 640
	    PL_UNLOCK;
            vlc_restorecancel( canc );
641
        }
642

643
        int i_activity = var_GetInteger( p_playlist, "activity" );
644
        if( i_activity < 0 ) i_activity = 0;
645
        /* Sleep at least 1ms */
646
        msleep( (i_activity+1) * 1000 );
647 648
    }

649 650
    assert( 0 );
    return NULL;
651 652
}

653 654 655
/**
 * Fetcher loop
 *
656
 * \return never
657
 */
658
void *playlist_FetcherLoop( void *data )
659
{
660 661 662
    playlist_fetcher_t *p_fetcher = data;
    playlist_t *p_playlist = &((playlist_private_t *)(((char *)p_fetcher)
             - offsetof(playlist_private_t, fetcher)))->public_data;
663

664
    for( ;; )
665
    {
666 667 668 669 670 671 672
        input_item_t *p_item;

        vlc_mutex_lock( &p_fetcher->lock );
        mutex_cleanup_push( &p_fetcher->lock );

        while( p_fetcher->i_waiting == 0 )
            vlc_cond_wait( &p_fetcher->wait, &p_fetcher->lock );
673

674 675 676 677 678
        p_item = p_fetcher->pp_waiting[0];
        REMOVE_ELEM( p_fetcher->pp_waiting, p_fetcher->i_waiting, 0 );
        vlc_cleanup_run( );

        int canc = vlc_savecancel();
679
        if( p_item )
680
        {
Rafaël Carré's avatar
Rafaël Carré committed
681 682
            int i_ret;

683 684
            /* Check if it is not yet preparsed and if so wait for it
             * (at most 0.5s)
Rafaël Carré's avatar
Rafaël Carré committed
685
             * (This can happen if we fetch art on play)
686 687
             * FIXME this doesn't work if we need to fetch meta before art...
             */
Rafaël Carré's avatar
Rafaël Carré committed
688
            for( i_ret = 0; i_ret < 10 && !input_item_IsPreparsed( p_item ); i_ret++ )
Clément Stenac's avatar
Clément Stenac committed
689
            {
Rafaël Carré's avatar
Rafaël Carré committed
690 691
                bool b_break;
                PL_LOCK;
692 693
                b_break = ( !pl_priv(p_playlist)->p_input || input_GetItem(pl_priv(p_playlist)->p_input) != p_item  ||
                            pl_priv(p_playlist)->p_input->b_die || pl_priv(p_playlist)->p_input->b_eof || pl_priv(p_playlist)->p_input->b_error );
Rafaël Carré's avatar
Rafaël Carré committed
694 695 696 697 698
                PL_UNLOCK;
                if( b_break )
                    break;
                msleep( 50000 );
            }
699

Rafaël Carré's avatar
Rafaël Carré committed
700 701 702 703 704 705 706 707 708 709
            i_ret = input_ArtFind( p_playlist, p_item );
            if( i_ret == 1 )
            {
                PL_DEBUG( "downloading art for %s", p_item->psz_name );
                if( input_DownloadAndCacheArt( p_playlist, p_item ) )
                    input_item_SetArtNotFound( p_item, true );
                else {
                    input_item_SetArtFetched( p_item, true );
                    var_SetInteger( p_playlist, "item-change",
                                    p_item->i_id );
710
                }
Rafaël Carré's avatar
Rafaël Carré committed
711 712 713 714 715 716
            }
            else if( i_ret == 0 ) /* Was in cache */
            {
                PL_DEBUG( "found art for %s in cache", p_item->psz_name );
                input_item_SetArtFetched( p_item, true );
                var_SetInteger( p_playlist, "item-change", p_item->i_id );
Clément Stenac's avatar
Clément Stenac committed
717 718
            }
            else
719
            {
Rafaël Carré's avatar
Rafaël Carré committed
720 721 722 723
                PL_DEBUG( "art not found for %s", p_item->psz_name );
                input_item_SetArtNotFound( p_item, true );
            }
            vlc_gc_decref( p_item );
724
        }
725 726 727
        vlc_restorecancel( canc );

        int i_activity = var_GetInteger( p_playlist, "activity" );
728 729 730
        if( i_activity < 0 ) i_activity = 0;
        /* Sleep at least 1ms */
        msleep( (i_activity+1) * 1000 );
731 732
    }

733 734
    assert( 0 );
    return NULL;
735 736
}

737 738 739 740 741
static void VariablesInit( playlist_t *p_playlist )
{
    vlc_value_t val;
    /* These variables control updates */
    var_Create( p_playlist, "intf-change", VLC_VAR_BOOL );
742
    val.b_bool = true;
743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762
    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, "activity", VLC_VAR_INTEGER );
    var_SetInteger( p_playlist, "activity", 0 );

    /* Variables to control playback */
763 764 765 766 767
    var_Create( p_playlist, "play-and-stop", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
    var_Create( p_playlist, "play-and-exit", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
    var_Create( p_playlist, "random", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
    var_Create( p_playlist, "repeat", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
    var_Create( p_playlist, "loop", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
Clément Stenac's avatar
Clément Stenac committed
768 769

    var_AddCallback( p_playlist, "random", RandomCallback, NULL );
770
}
771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791

int playlist_CurrentId( playlist_t * p_playlist )
{
    return pl_priv(p_playlist)->status.p_item->i_id;
}

bool playlist_IsPlaying( playlist_t * p_playlist )
{
    return ( pl_priv(p_playlist)->status.i_status == PLAYLIST_RUNNING &&
            !(pl_priv(p_playlist)->request.b_request && pl_priv(p_playlist)->request.i_status == PLAYLIST_STOPPED) );
}

playlist_item_t * playlist_CurrentPlayingItem( playlist_t * p_playlist )
{
    return pl_priv(p_playlist)->status.p_item;
}

int playlist_Status( playlist_t * p_playlist )
{
    return pl_priv(p_playlist)->status.i_status;
}