git.sesse.net Git - vlc/blob - src/control/media_player.c

   1 /*****************************************************************************
   2  * media_player.c: Libvlc API Media Instance management functions
   3  *****************************************************************************
   4  * Copyright (C) 2005-2009 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <assert.h>
  29
  30 #include <vlc/libvlc.h>
  31 #include <vlc/libvlc_media.h>
  32 #include <vlc/libvlc_events.h>
  33
  34 #include <vlc_demux.h>
  35 #include <vlc_input.h>
  36 #include <vlc_vout.h>
  37
  38 #include "libvlc.h"
  39
  40 #include "libvlc_internal.h"
  41 #include "media_internal.h" // libvlc_media_set_state()
  42 #include "media_player_internal.h"
  43
  44 static int
  45 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
  46                         vlc_value_t oldval, vlc_value_t newval,
  47                         void * p_userdata );
  48 static int
  49 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
  50                         vlc_value_t oldval, vlc_value_t newval,
  51                         void * p_userdata );
  52 static int
  53 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
  54                      vlc_value_t oldval, vlc_value_t newval,
  55                      void * p_userdata );
  56
  57 static int
  58 snapshot_was_taken( vlc_object_t *p_this, char const *psz_cmd,
  59                     vlc_value_t oldval, vlc_value_t newval, void *p_data );
  60
  61 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi );
  62
  63 /*
  64  * Shortcuts
  65  */
  66
  67 #define register_event(a, b) __register_event(a, libvlc_MediaPlayer ## b)
  68 static inline void __register_event(libvlc_media_player_t *mp, libvlc_event_type_t type)
  69 {
  70     libvlc_event_manager_register_event_type(mp->p_event_manager, type);
  71 }
  72
  73 static inline void lock(libvlc_media_player_t *mp)
  74 {
  75     vlc_mutex_lock(&mp->object_lock);
  76 }
  77
  78 static inline void unlock(libvlc_media_player_t *mp)
  79 {
  80     vlc_mutex_unlock(&mp->object_lock);
  81 }
  82
  83 /*
  84  * Release the associated input thread.
  85  *
  86  * Object lock is NOT held.
  87  */
  88 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
  89 {
  90     input_thread_t * p_input_thread;
  91
  92     if( !p_mi || !p_mi->p_input_thread )
  93         return;
  94
  95     p_input_thread = p_mi->p_input_thread;
  96
  97     var_DelCallback( p_input_thread, "can-seek",
  98                      input_seekable_changed, p_mi );
  99     var_DelCallback( p_input_thread, "can-pause",
 100                     input_pausable_changed, p_mi );
 101     var_DelCallback( p_input_thread, "intf-event",
 102                      input_event_changed, p_mi );
 103
 104     /* We owned this one */
 105     input_Stop( p_input_thread, b_input_abort );
 106
 107     vlc_thread_join( p_input_thread );
 108
 109     assert( p_mi->p_input_resource == NULL );
 110     assert( p_input_thread->b_dead );
 111     /* Store the input resource for future use. */
 112     p_mi->p_input_resource = input_DetachResource( p_input_thread );
 113
 114     vlc_object_release( p_input_thread );
 115
 116     p_mi->p_input_thread = NULL;
 117 }
 118
 119 /*
 120  * Retrieve the input thread. Be sure to release the object
 121  * once you are done with it. (libvlc Internal)
 122  *
 123  * Function will lock the object.
 124  */
 125 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi )
 126 {
 127     input_thread_t *p_input_thread;
 128
 129     assert( p_mi );
 130
 131     lock(p_mi);
 132     p_input_thread = p_mi->p_input_thread;
 133     if( p_input_thread )
 134         vlc_object_hold( p_input_thread );
 135     else
 136         libvlc_printerr( "No active input" );
 137     unlock(p_mi);
 138
 139     return p_input_thread;
 140 }
 141
 142 /*
 143  * Set the internal state of the media_player. (media player Internal)
 144  *
 145  * Function will lock the media_player.
 146  */
 147 static void set_state( libvlc_media_player_t *p_mi, libvlc_state_t state,
 148     bool b_locked )
 149 {
 150     if(!b_locked)
 151         lock(p_mi);
 152     p_mi->state = state;
 153     libvlc_media_t *media = p_mi->p_md;
 154     if (media)
 155         libvlc_media_retain(media);
 156     if(!b_locked)
 157         unlock(p_mi);
 158
 159
 160     if (media) {
 161         // Also set the state of the corresponding media
 162         // This is strictly for convenience.
 163         libvlc_media_set_state(media, state);
 164
 165         libvlc_media_release(media);
 166     }
 167 }
 168
 169 static int
 170 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 171                         vlc_value_t oldval, vlc_value_t newval,
 172                         void * p_userdata )
 173 {
 174     VLC_UNUSED(oldval);
 175     VLC_UNUSED(p_this);
 176     VLC_UNUSED(psz_cmd);
 177     libvlc_media_player_t * p_mi = p_userdata;
 178     libvlc_event_t event;
 179
 180     event.type = libvlc_MediaPlayerSeekableChanged;
 181     event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
 182
 183     libvlc_event_send( p_mi->p_event_manager, &event );
 184     return VLC_SUCCESS;
 185 }
 186
 187 static int
 188 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 189                         vlc_value_t oldval, vlc_value_t newval,
 190                         void * p_userdata )
 191 {
 192     VLC_UNUSED(oldval);
 193     VLC_UNUSED(p_this);
 194     VLC_UNUSED(psz_cmd);
 195     libvlc_media_player_t * p_mi = p_userdata;
 196     libvlc_event_t event;
 197
 198     event.type = libvlc_MediaPlayerPausableChanged;
 199     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 200
 201     libvlc_event_send( p_mi->p_event_manager, &event );
 202     return VLC_SUCCESS;
 203 }
 204
 205 static int
 206 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 207                      vlc_value_t oldval, vlc_value_t newval,
 208                      void * p_userdata )
 209 {
 210     VLC_UNUSED(oldval);
 211     input_thread_t * p_input = (input_thread_t *)p_this;
 212     libvlc_media_player_t * p_mi = p_userdata;
 213     libvlc_event_t event;
 214
 215     assert( !strcmp( psz_cmd, "intf-event" ) );
 216
 217     if( newval.i_int == INPUT_EVENT_STATE )
 218     {
 219         libvlc_state_t libvlc_state;
 220
 221         switch ( var_GetInteger( p_input, "state" ) )
 222         {
 223             case INIT_S:
 224                 libvlc_state = libvlc_NothingSpecial;
 225                 event.type = libvlc_MediaPlayerNothingSpecial;
 226                 break;
 227             case OPENING_S:
 228                 libvlc_state = libvlc_Opening;
 229                 event.type = libvlc_MediaPlayerOpening;
 230                 break;
 231             case PLAYING_S:
 232                 libvlc_state = libvlc_Playing;
 233                 event.type = libvlc_MediaPlayerPlaying;
 234                 break;
 235             case PAUSE_S:
 236                 libvlc_state = libvlc_Paused;
 237                 event.type = libvlc_MediaPlayerPaused;
 238                 break;
 239             case END_S:
 240                 libvlc_state = libvlc_Ended;
 241                 event.type = libvlc_MediaPlayerEndReached;
 242                 break;
 243             case ERROR_S:
 244                 libvlc_state = libvlc_Error;
 245                 event.type = libvlc_MediaPlayerEncounteredError;
 246                 break;
 247
 248             default:
 249                 return VLC_SUCCESS;
 250         }
 251
 252         set_state( p_mi, libvlc_state, false );
 253         libvlc_event_send( p_mi->p_event_manager, &event );
 254     }
 255     else if( newval.i_int == INPUT_EVENT_ABORT )
 256     {
 257         libvlc_state_t libvlc_state = libvlc_Stopped;
 258         event.type = libvlc_MediaPlayerStopped;
 259
 260         set_state( p_mi, libvlc_state, false );
 261         libvlc_event_send( p_mi->p_event_manager, &event );
 262     }
 263     else if( newval.i_int == INPUT_EVENT_POSITION )
 264     {
 265         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 266             return VLC_SUCCESS; /* Don't send the position while stopped */
 267
 268         /* */
 269         event.type = libvlc_MediaPlayerPositionChanged;
 270         event.u.media_player_position_changed.new_position =
 271                                           var_GetFloat( p_input, "position" );
 272         libvlc_event_send( p_mi->p_event_manager, &event );
 273
 274         /* */
 275         event.type = libvlc_MediaPlayerTimeChanged;
 276         event.u.media_player_time_changed.new_time =
 277            from_mtime(var_GetTime( p_input, "time" ));
 278         libvlc_event_send( p_mi->p_event_manager, &event );
 279     }
 280     else if( newval.i_int == INPUT_EVENT_LENGTH )
 281     {
 282         event.type = libvlc_MediaPlayerLengthChanged;
 283         event.u.media_player_length_changed.new_length =
 284            from_mtime(var_GetTime( p_input, "length" ));
 285         libvlc_event_send( p_mi->p_event_manager, &event );
 286     }
 287
 288     return VLC_SUCCESS;
 289
 290 }
 291
 292 /**************************************************************************
 293  * Snapshot Taken Event.
 294  *
 295  * FIXME: This snapshot API interface makes no sense in media_player.
 296  *************************************************************************/
 297 static int snapshot_was_taken(vlc_object_t *p_this, char const *psz_cmd,
 298                               vlc_value_t oldval, vlc_value_t newval, void *p_data )
 299 {
 300     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
 301
 302     libvlc_media_player_t *mp = p_data;
 303     libvlc_event_t event;
 304     event.type = libvlc_MediaPlayerSnapshotTaken;
 305     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string;
 306     libvlc_event_send(mp->p_event_manager, &event);
 307
 308     return VLC_SUCCESS;
 309 }
 310
 311
 312 static void libvlc_media_player_destroy( libvlc_media_player_t * );
 313
 314
 315 /**************************************************************************
 316  * Create a Media Instance object.
 317  *
 318  * Refcount strategy:
 319  * - All items created by _new start with a refcount set to 1.
 320  * - Accessor _release decrease the refcount by 1, if after that
 321  *   operation the refcount is 0, the object is destroyed.
 322  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 323  *
 324  * Object locking strategy:
 325  * - No lock held while in constructor.
 326  * - When accessing any member variable this lock is held. (XXX who locks?)
 327  * - When attempting to destroy the object the lock is also held.
 328  **************************************************************************/
 329 libvlc_media_player_t *
 330 libvlc_media_player_new( libvlc_instance_t *instance )
 331 {
 332     libvlc_media_player_t * mp;
 333
 334     assert(instance);
 335
 336     mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
 337     if (unlikely(mp == NULL))
 338     {
 339         libvlc_printerr("Not enough memory");
 340         return NULL;
 341     }
 342     vlc_object_attach (mp, mp->p_libvlc);
 343
 344     /* Drawable */
 345     var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
 346 #ifdef WIN32
 347     var_Create (mp, "drawable-hwnd", VLC_VAR_ADDRESS);
 348 #endif
 349 #ifdef __APPLE__
 350     var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
 351     var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
 352 #endif
 353
 354     /* Drawable input methods */
 355     var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
 356     var_SetBool (mp, "keyboard-events", true);
 357     var_Create (mp, "mouse-events", VLC_VAR_BOOL);
 358
 359     /* Audio */
 360     var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 361
 362     mp->p_md = NULL;
 363     mp->state = libvlc_NothingSpecial;
 364     mp->p_libvlc_instance = instance;
 365     mp->p_input_thread = NULL;
 366     mp->p_input_resource = NULL;
 367     mp->i_refcount = 1;
 368     mp->p_event_manager = libvlc_event_manager_new(mp, instance);
 369     if (unlikely(mp->p_event_manager == NULL))
 370     {
 371         vlc_object_release(mp);
 372         return NULL;
 373     }
 374     vlc_mutex_init(&mp->object_lock);
 375
 376     register_event(mp, NothingSpecial);
 377     register_event(mp, Opening);
 378     register_event(mp, Buffering);
 379     register_event(mp, Playing);
 380     register_event(mp, Paused);
 381     register_event(mp, Stopped);
 382     register_event(mp, Forward);
 383     register_event(mp, Backward);
 384     register_event(mp, EndReached);
 385     register_event(mp, EncounteredError);
 386     register_event(mp, SeekableChanged);
 387
 388     register_event(mp, PositionChanged);
 389     register_event(mp, TimeChanged);
 390     register_event(mp, LengthChanged);
 391     register_event(mp, TitleChanged);
 392     register_event(mp, PausableChanged);
 393
 394     /* Snapshot initialization */
 395     register_event(mp, SnapshotTaken);
 396
 397     register_event(mp, MediaChanged);
 398
 399     /* Attach a var callback to the global object to provide the glue between
 400      * vout_thread that generates the event and media_player that re-emits it
 401      * with its own event manager
 402      *
 403      * FIXME: It's unclear why we want to put this in public API, and why we
 404      * want to expose it in such a limiting and ugly way.
 405      */
 406     var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
 407
 408     return mp;
 409 }
 410
 411 /**************************************************************************
 412  * Create a Media Instance object with a media descriptor.
 413  **************************************************************************/
 414 libvlc_media_player_t *
 415 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
 416 {
 417     libvlc_media_player_t * p_mi;
 418
 419     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
 420     if( !p_mi )
 421         return NULL;
 422
 423     libvlc_media_retain( p_md );
 424     p_mi->p_md = p_md;
 425
 426     return p_mi;
 427 }
 428
 429 /**************************************************************************
 430  * Destroy a Media Instance object (libvlc internal)
 431  *
 432  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 433  **************************************************************************/
 434 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 435 {
 436     assert( p_mi );
 437
 438     /* Detach Callback from the main libvlc object */
 439     var_DelCallback( p_mi->p_libvlc,
 440                      "snapshot-file", snapshot_was_taken, p_mi );
 441
 442     /* If the input thread hasn't been already deleted it means
 443      * that the owners didn't stop the thread before releasing it. */
 444     assert(!p_mi->p_input_thread);
 445
 446     /* Fallback for those who don't use NDEBUG */
 447     if (p_mi->p_input_thread)
 448         release_input_thread(p_mi, true);
 449
 450     if( p_mi->p_input_resource )
 451     {
 452         input_resource_Delete( p_mi->p_input_resource );
 453         p_mi->p_input_resource = NULL;
 454     }
 455
 456     libvlc_event_manager_release( p_mi->p_event_manager );
 457     libvlc_media_release( p_mi->p_md );
 458     vlc_mutex_destroy( &p_mi->object_lock );
 459     vlc_object_release( p_mi );
 460 }
 461
 462 /**************************************************************************
 463  * Release a Media Instance object.
 464  *
 465  * Function does the locking.
 466  **************************************************************************/
 467 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 468 {
 469     bool destroy;
 470
 471     assert( p_mi );
 472     lock(p_mi);
 473     destroy = !--p_mi->i_refcount;
 474     unlock(p_mi);
 475
 476     if( destroy )
 477         libvlc_media_player_destroy( p_mi );
 478 }
 479
 480 /**************************************************************************
 481  * Retain a Media Instance object.
 482  *
 483  * Caller must hold the lock.
 484  **************************************************************************/
 485 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 486 {
 487     assert( p_mi );
 488
 489     lock(p_mi);
 490     p_mi->i_refcount++;
 491     unlock(p_mi);
 492 }
 493
 494 /**************************************************************************
 495  * Set the Media descriptor associated with the instance.
 496  *
 497  * Enter without lock -- function will lock the object.
 498  **************************************************************************/
 499 void libvlc_media_player_set_media(
 500                             libvlc_media_player_t *p_mi,
 501                             libvlc_media_t *p_md )
 502 {
 503     lock(p_mi);
 504
 505     /* FIXME I am not sure if it is a user request or on die(eof/error)
 506      * request here */
 507     release_input_thread( p_mi,
 508                           p_mi->p_input_thread &&
 509                           !p_mi->p_input_thread->b_eof &&
 510                           !p_mi->p_input_thread->b_error );
 511
 512     set_state( p_mi, libvlc_NothingSpecial, true );
 513
 514     libvlc_media_release( p_mi->p_md );
 515
 516     if( !p_md )
 517     {
 518         p_mi->p_md = NULL;
 519         unlock(p_mi);
 520         return; /* It is ok to pass a NULL md */
 521     }
 522
 523     libvlc_media_retain( p_md );
 524     p_mi->p_md = p_md;
 525
 526     /* The policy here is to ignore that we were created using a different
 527      * libvlc_instance, because we don't really care */
 528     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 529
 530     unlock(p_mi);
 531
 532     /* Send an event for the newly available media */
 533     libvlc_event_t event;
 534     event.type = libvlc_MediaPlayerMediaChanged;
 535     event.u.media_player_media_changed.new_media = p_md;
 536     libvlc_event_send( p_mi->p_event_manager, &event );
 537
 538 }
 539
 540 /**************************************************************************
 541  * Get the Media descriptor associated with the instance.
 542  **************************************************************************/
 543 libvlc_media_t *
 544 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
 545 {
 546     libvlc_media_t *p_m;
 547
 548     lock(p_mi);
 549     p_m = p_mi->p_md;
 550     if( p_m )
 551         libvlc_media_retain( p_mi->p_md );
 552     unlock(p_mi);
 553     return p_mi->p_md;
 554 }
 555
 556 /**************************************************************************
 557  * Get the event Manager.
 558  **************************************************************************/
 559 libvlc_event_manager_t *
 560 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
 561 {
 562     return p_mi->p_event_manager;
 563 }
 564
 565 /**************************************************************************
 566  * Tell media player to start playing.
 567  **************************************************************************/
 568 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
 569 {
 570     input_thread_t * p_input_thread;
 571
 572     if( (p_input_thread = libvlc_get_input_thread( p_mi )) )
 573     {
 574         /* A thread already exists, send it a play message */
 575         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 576         vlc_object_release( p_input_thread );
 577         return 0;
 578     }
 579
 580     /* Ignore previous exception */
 581     lock(p_mi);
 582
 583     if( !p_mi->p_md )
 584     {
 585         unlock(p_mi);
 586         libvlc_printerr( "No associated media descriptor" );
 587         return -1;
 588     }
 589
 590     p_mi->p_input_thread = input_Create( p_mi,
 591                                          p_mi->p_md->p_input_item, NULL,
 592                                          p_mi->p_input_resource );
 593     if( !p_mi->p_input_thread )
 594     {
 595         unlock(p_mi);
 596         libvlc_printerr( "Not enough memory" );
 597         return -1;
 598     }
 599
 600     p_mi->p_input_resource = NULL;
 601     p_input_thread = p_mi->p_input_thread;
 602
 603     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 604     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 605     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 606
 607     if( input_Start( p_input_thread ) )
 608     {
 609         vlc_object_release( p_input_thread );
 610         p_mi->p_input_thread = NULL;
 611     }
 612
 613     unlock(p_mi);
 614     return 0;
 615 }
 616
 617 /**************************************************************************
 618  * Pause.
 619  **************************************************************************/
 620 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
 621 {
 622     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
 623     if( !p_input_thread )
 624         return;
 625
 626     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 627     if( state == libvlc_Playing || state == libvlc_Buffering )
 628     {
 629         if( libvlc_media_player_can_pause( p_mi ) )
 630             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 631         else
 632             libvlc_media_player_stop( p_mi );
 633     }
 634     else
 635         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 636
 637     vlc_object_release( p_input_thread );
 638 }
 639
 640 /**************************************************************************
 641  * Tells whether the media player is currently playing.
 642  *
 643  * Enter with lock held.
 644  **************************************************************************/
 645 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
 646 {
 647     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 648     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 649 }
 650
 651 /**************************************************************************
 652  * Stop playing.
 653  **************************************************************************/
 654 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
 655 {
 656     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 657
 658     lock(p_mi);
 659     release_input_thread( p_mi, true ); /* This will stop the input thread */
 660     unlock(p_mi);
 661
 662     /* Force to go to stopped state, in case we were in Ended, or Error
 663      * state. */
 664     if( state != libvlc_Stopped )
 665     {
 666         set_state( p_mi, libvlc_Stopped, false );
 667
 668         /* Construct and send the event */
 669         libvlc_event_t event;
 670         event.type = libvlc_MediaPlayerStopped;
 671         libvlc_event_send( p_mi->p_event_manager, &event );
 672     }
 673 }
 674
 675 /**************************************************************************
 676  * set_nsobject
 677  **************************************************************************/
 678 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 679                                         void * drawable )
 680 {
 681     assert (p_mi != NULL);
 682 #ifdef __APPLE__
 683     var_SetAddress (p_mi, "drawable-nsobject", drawable);
 684 #else
 685     (void) p_mi; (void)drawable;
 686 #endif
 687 }
 688
 689 /**************************************************************************
 690  * get_nsobject
 691  **************************************************************************/
 692 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 693 {
 694     assert (p_mi != NULL);
 695 #ifdef __APPLE__
 696     return var_GetAddress (p_mi, "drawable-nsobject");
 697 #else
 698     return NULL;
 699 #endif
 700 }
 701
 702 /**************************************************************************
 703  * set_agl
 704  **************************************************************************/
 705 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 706                                   uint32_t drawable )
 707 {
 708 #ifdef __APPLE__
 709     var_SetInteger (p_mi, "drawable-agl", drawable);
 710 #else
 711     (void) p_mi; (void)drawable;
 712 #endif
 713 }
 714
 715 /**************************************************************************
 716  * get_agl
 717  **************************************************************************/
 718 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 719 {
 720     assert (p_mi != NULL);
 721 #ifdef __APPLE__
 722     return var_GetInteger (p_mi, "drawable-agl");
 723 #else
 724     return 0;
 725 #endif
 726 }
 727
 728 /**************************************************************************
 729  * set_xwindow
 730  **************************************************************************/
 731 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 732                                       uint32_t drawable )
 733 {
 734     assert (p_mi != NULL);
 735     var_SetInteger (p_mi, "drawable-xid", drawable);
 736 }
 737
 738 /**************************************************************************
 739  * get_xwindow
 740  **************************************************************************/
 741 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 742 {
 743     return var_GetInteger (p_mi, "drawable-xid");
 744 }
 745
 746 /**************************************************************************
 747  * set_hwnd
 748  **************************************************************************/
 749 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 750                                    void *drawable )
 751 {
 752     assert (p_mi != NULL);
 753 #ifdef WIN32
 754     var_SetAddress (p_mi, "drawable-hwnd", drawable);
 755 #else
 756     (void) p_mi; (void) drawable;
 757 #endif
 758 }
 759
 760 /**************************************************************************
 761  * get_hwnd
 762  **************************************************************************/
 763 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 764 {
 765     assert (p_mi != NULL);
 766 #ifdef WIN32
 767     return var_GetAddress (p_mi, "drawable-hwnd");
 768 #else
 769     return NULL;
 770 #endif
 771 }
 772
 773 /**************************************************************************
 774  * Getters for stream information
 775  **************************************************************************/
 776 libvlc_time_t libvlc_media_player_get_length(
 777                              libvlc_media_player_t *p_mi )
 778 {
 779     input_thread_t *p_input_thread;
 780     libvlc_time_t i_time;
 781
 782     p_input_thread = libvlc_get_input_thread ( p_mi );
 783     if( !p_input_thread )
 784         return -1;
 785
 786     i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
 787     vlc_object_release( p_input_thread );
 788
 789     return i_time;
 790 }
 791
 792 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
 793 {
 794     input_thread_t *p_input_thread;
 795     libvlc_time_t i_time;
 796
 797     p_input_thread = libvlc_get_input_thread ( p_mi );
 798     if( !p_input_thread )
 799         return -1;
 800
 801     i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
 802     vlc_object_release( p_input_thread );
 803     return i_time;
 804 }
 805
 806 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
 807                                    libvlc_time_t i_time )
 808 {
 809     input_thread_t *p_input_thread;
 810
 811     p_input_thread = libvlc_get_input_thread ( p_mi );
 812     if( !p_input_thread )
 813         return;
 814
 815     var_SetTime( p_input_thread, "time", to_mtime(i_time) );
 816     vlc_object_release( p_input_thread );
 817 }
 818
 819 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
 820                                        float position )
 821 {
 822     input_thread_t *p_input_thread;
 823
 824     p_input_thread = libvlc_get_input_thread ( p_mi );
 825     if( !p_input_thread )
 826         return;
 827
 828     var_SetFloat( p_input_thread, "position", position );
 829     vlc_object_release( p_input_thread );
 830 }
 831
 832 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
 833 {
 834     input_thread_t *p_input_thread;
 835     float f_position;
 836
 837     p_input_thread = libvlc_get_input_thread ( p_mi );
 838     if( !p_input_thread )
 839         return -1.0;
 840
 841     f_position = var_GetFloat( p_input_thread, "position" );
 842     vlc_object_release( p_input_thread );
 843
 844     return f_position;
 845 }
 846
 847 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
 848                                       int chapter )
 849 {
 850     input_thread_t *p_input_thread;
 851
 852     p_input_thread = libvlc_get_input_thread ( p_mi );
 853     if( !p_input_thread )
 854         return;
 855
 856     var_SetInteger( p_input_thread, "chapter", chapter );
 857     vlc_object_release( p_input_thread );
 858 }
 859
 860 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
 861 {
 862     input_thread_t *p_input_thread;
 863     int i_chapter;
 864
 865     p_input_thread = libvlc_get_input_thread ( p_mi );
 866     if( !p_input_thread )
 867         return -1;
 868
 869     i_chapter = var_GetInteger( p_input_thread, "chapter" );
 870     vlc_object_release( p_input_thread );
 871
 872     return i_chapter;
 873 }
 874
 875 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
 876 {
 877     input_thread_t *p_input_thread;
 878     vlc_value_t val;
 879
 880     p_input_thread = libvlc_get_input_thread ( p_mi );
 881     if( !p_input_thread )
 882         return -1;
 883
 884     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 885     vlc_object_release( p_input_thread );
 886
 887     return val.i_int;
 888 }
 889
 890 int libvlc_media_player_get_chapter_count_for_title(
 891                                  libvlc_media_player_t *p_mi,
 892                                  int i_title )
 893 {
 894     input_thread_t *p_input_thread;
 895     vlc_value_t val;
 896
 897     p_input_thread = libvlc_get_input_thread ( p_mi );
 898     if( !p_input_thread )
 899         return -1;
 900
 901     char *psz_name;
 902     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 903     {
 904         vlc_object_release( p_input_thread );
 905         return -1;
 906     }
 907     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 908     vlc_object_release( p_input_thread );
 909     free( psz_name );
 910
 911     return val.i_int;
 912 }
 913
 914 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
 915                                     int i_title )
 916 {
 917     input_thread_t *p_input_thread;
 918
 919     p_input_thread = libvlc_get_input_thread ( p_mi );
 920     if( !p_input_thread )
 921         return;
 922
 923     var_SetInteger( p_input_thread, "title", i_title );
 924     vlc_object_release( p_input_thread );
 925
 926     //send event
 927     libvlc_event_t event;
 928     event.type = libvlc_MediaPlayerTitleChanged;
 929     event.u.media_player_title_changed.new_title = i_title;
 930     libvlc_event_send( p_mi->p_event_manager, &event );
 931 }
 932
 933 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
 934 {
 935     input_thread_t *p_input_thread;
 936     int i_title;
 937
 938     p_input_thread = libvlc_get_input_thread ( p_mi );
 939     if( !p_input_thread )
 940         return -1;
 941
 942     i_title = var_GetInteger( p_input_thread, "title" );
 943     vlc_object_release( p_input_thread );
 944
 945     return i_title;
 946 }
 947
 948 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
 949 {
 950     input_thread_t *p_input_thread;
 951     vlc_value_t val;
 952
 953     p_input_thread = libvlc_get_input_thread ( p_mi );
 954     if( !p_input_thread )
 955         return -1;
 956
 957     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
 958     vlc_object_release( p_input_thread );
 959
 960     return val.i_int;
 961 }
 962
 963 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
 964 {
 965     input_thread_t *p_input_thread;
 966
 967     p_input_thread = libvlc_get_input_thread ( p_mi );
 968     if( !p_input_thread )
 969         return;
 970
 971     int i_type = var_Type( p_input_thread, "next-chapter" );
 972     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
 973                             "next-chapter":"next-title", true );
 974
 975     vlc_object_release( p_input_thread );
 976 }
 977
 978 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
 979 {
 980     input_thread_t *p_input_thread;
 981
 982     p_input_thread = libvlc_get_input_thread ( p_mi );
 983     if( !p_input_thread )
 984         return;
 985
 986     int i_type = var_Type( p_input_thread, "next-chapter" );
 987     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
 988                             "prev-chapter":"prev-title", true );
 989
 990     vlc_object_release( p_input_thread );
 991 }
 992
 993 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
 994 {
 995     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
 996     double f_fps = 0.0;
 997
 998     if( p_input_thread )
 999     {
1000         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1001             f_fps = 0.0;
1002         vlc_object_release( p_input_thread );
1003     }
1004     return f_fps;
1005 }
1006
1007 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1008 {
1009     bool b_will_play;
1010     input_thread_t *p_input_thread =
1011                             libvlc_get_input_thread ( p_mi );
1012     if ( !p_input_thread )
1013         return false;
1014
1015     b_will_play = !p_input_thread->b_die && !p_input_thread->b_dead;
1016     vlc_object_release( p_input_thread );
1017
1018     return b_will_play;
1019 }
1020
1021 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1022 {
1023     input_thread_t *p_input_thread;
1024     bool b_can_rewind;
1025
1026     p_input_thread = libvlc_get_input_thread ( p_mi );
1027     if( !p_input_thread )
1028         return -1;
1029
1030     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1031     if( (rate < 0.0) && !b_can_rewind )
1032     {
1033         vlc_object_release( p_input_thread );
1034         libvlc_printerr( "Invalid playback rate" );
1035         return -1;
1036     }
1037
1038     var_SetFloat( p_input_thread, "rate", rate );
1039     vlc_object_release( p_input_thread );
1040     return 0;
1041 }
1042
1043 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1044 {
1045     input_thread_t *p_input_thread;
1046     float f_rate;
1047     bool b_can_rewind;
1048
1049     p_input_thread = libvlc_get_input_thread ( p_mi );
1050     if( !p_input_thread )
1051         return 0.0;  /* rate < 0 indicates rewind */
1052
1053     f_rate = var_GetFloat( p_input_thread, "rate" );
1054     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1055     /* FIXME: why are negative values forbidden ?? (rewinding) */
1056     if( f_rate < 0 && !b_can_rewind )
1057     {
1058         vlc_object_release( p_input_thread );
1059         return 0.0;
1060     }
1061     vlc_object_release( p_input_thread );
1062
1063     return f_rate;
1064 }
1065
1066 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1067 {
1068     lock(p_mi);
1069     libvlc_state_t state = p_mi->state;
1070     unlock(p_mi);
1071     return state;
1072 }
1073
1074 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1075 {
1076     input_thread_t *p_input_thread;
1077     bool b_seekable;
1078
1079     p_input_thread = libvlc_get_input_thread ( p_mi );
1080     if ( !p_input_thread )
1081         return false;
1082     b_seekable = var_GetBool( p_input_thread, "can-seek" );
1083     vlc_object_release( p_input_thread );
1084
1085     return b_seekable;
1086 }
1087
1088 /* internal function, used by audio, video */
1089 libvlc_track_description_t *
1090         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1091                                       const char *psz_variable )
1092 {
1093     input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1094     libvlc_track_description_t *p_track_description = NULL,
1095                                *p_actual, *p_previous;
1096
1097     if( !p_input )
1098         return NULL;
1099
1100     vlc_value_t val_list, text_list;
1101     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1102
1103     /* no tracks */
1104     if( val_list.p_list->i_count <= 0 )
1105         goto end;
1106
1107     p_track_description = ( libvlc_track_description_t * )
1108         malloc( sizeof( libvlc_track_description_t ) );
1109     if ( !p_track_description )
1110     {
1111         libvlc_printerr( "Not enough memory" );
1112         goto end;
1113     }
1114     p_actual = p_track_description;
1115     p_previous = NULL;
1116     for( int i = 0; i < val_list.p_list->i_count; i++ )
1117     {
1118         if( !p_actual )
1119         {
1120             p_actual = ( libvlc_track_description_t * )
1121                 malloc( sizeof( libvlc_track_description_t ) );
1122             if ( !p_actual )
1123             {
1124                 libvlc_track_description_release( p_track_description );
1125                 libvlc_printerr( "Not enough memory" );
1126                 goto end;
1127             }
1128         }
1129         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1130         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1131         p_actual->p_next = NULL;
1132         if( p_previous )
1133             p_previous->p_next = p_actual;
1134         p_previous = p_actual;
1135         p_actual =  NULL;
1136     }
1137
1138 end:
1139     var_FreeList( &val_list, &text_list );
1140     vlc_object_release( p_input );
1141
1142     return p_track_description;
1143 }
1144
1145 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1146 {
1147     libvlc_track_description_t *p_actual, *p_before;
1148     p_actual = p_td;
1149
1150     while ( p_actual )
1151     {
1152         free( p_actual->psz_name );
1153         p_before = p_actual;
1154         p_actual = p_before->p_next;
1155         free( p_before );
1156     }
1157 }
1158
1159 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1160 {
1161     input_thread_t *p_input_thread;
1162     bool b_can_pause;
1163
1164     p_input_thread = libvlc_get_input_thread ( p_mi );
1165     if ( !p_input_thread )
1166         return false;
1167     b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1168     vlc_object_release( p_input_thread );
1169
1170     return b_can_pause;
1171 }
1172
1173 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1174 {
1175     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1176     if( p_input_thread != NULL )
1177     {
1178         var_TriggerCallback( p_input_thread, "frame-next" );
1179         vlc_object_release( p_input_thread );
1180     }
1181 }