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