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     /* Video */
 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     var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
 355     var_SetBool (mp, "keyboard-events", true);
 356     var_Create (mp, "mouse-events", VLC_VAR_BOOL);
 357     var_SetBool (mp, "mouse-events", true);
 358
 359     var_Create (mp, "fullscreen", VLC_VAR_BOOL);
 360     var_Create (mp, "autoscale", VLC_VAR_BOOL);
 361     var_SetBool (mp, "autoscale", true);
 362     var_Create (mp, "scale", VLC_VAR_FLOAT);
 363     var_SetFloat (mp, "scale", 1.);
 364     var_Create (mp, "aspect-ratio", VLC_VAR_STRING);
 365     var_Create (mp, "crop", VLC_VAR_STRING);
 366     var_Create (mp, "deinterlace", VLC_VAR_INTEGER);
 367     var_Create (mp, "deinterlace-mode", VLC_VAR_STRING);
 368
 369      /* Audio */
 370     var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 371
 372     mp->p_md = NULL;
 373     mp->state = libvlc_NothingSpecial;
 374     mp->p_libvlc_instance = instance;
 375     mp->p_input_thread = NULL;
 376     mp->p_input_resource = NULL;
 377     mp->i_refcount = 1;
 378     mp->p_event_manager = libvlc_event_manager_new(mp, instance);
 379     if (unlikely(mp->p_event_manager == NULL))
 380     {
 381         vlc_object_release(mp);
 382         return NULL;
 383     }
 384     vlc_mutex_init(&mp->object_lock);
 385
 386     register_event(mp, NothingSpecial);
 387     register_event(mp, Opening);
 388     register_event(mp, Buffering);
 389     register_event(mp, Playing);
 390     register_event(mp, Paused);
 391     register_event(mp, Stopped);
 392     register_event(mp, Forward);
 393     register_event(mp, Backward);
 394     register_event(mp, EndReached);
 395     register_event(mp, EncounteredError);
 396     register_event(mp, SeekableChanged);
 397
 398     register_event(mp, PositionChanged);
 399     register_event(mp, TimeChanged);
 400     register_event(mp, LengthChanged);
 401     register_event(mp, TitleChanged);
 402     register_event(mp, PausableChanged);
 403
 404     /* Snapshot initialization */
 405     register_event(mp, SnapshotTaken);
 406
 407     register_event(mp, MediaChanged);
 408
 409     /* Attach a var callback to the global object to provide the glue between
 410      * vout_thread that generates the event and media_player that re-emits it
 411      * with its own event manager
 412      *
 413      * FIXME: It's unclear why we want to put this in public API, and why we
 414      * want to expose it in such a limiting and ugly way.
 415      */
 416     var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
 417
 418     libvlc_retain(instance);
 419     return mp;
 420 }
 421
 422 /**************************************************************************
 423  * Create a Media Instance object with a media descriptor.
 424  **************************************************************************/
 425 libvlc_media_player_t *
 426 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
 427 {
 428     libvlc_media_player_t * p_mi;
 429
 430     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
 431     if( !p_mi )
 432         return NULL;
 433
 434     libvlc_media_retain( p_md );
 435     p_mi->p_md = p_md;
 436
 437     return p_mi;
 438 }
 439
 440 /**************************************************************************
 441  * Destroy a Media Instance object (libvlc internal)
 442  *
 443  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 444  **************************************************************************/
 445 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 446 {
 447     assert( p_mi );
 448
 449     /* Detach Callback from the main libvlc object */
 450     var_DelCallback( p_mi->p_libvlc,
 451                      "snapshot-file", snapshot_was_taken, p_mi );
 452
 453     /* If the input thread hasn't been already deleted it means
 454      * that the owners didn't stop the thread before releasing it. */
 455     assert(!p_mi->p_input_thread);
 456
 457     /* Fallback for those who don't use NDEBUG */
 458     if (p_mi->p_input_thread)
 459         release_input_thread(p_mi, true);
 460
 461     if( p_mi->p_input_resource )
 462     {
 463         input_resource_Delete( p_mi->p_input_resource );
 464         p_mi->p_input_resource = NULL;
 465     }
 466
 467     libvlc_event_manager_release( p_mi->p_event_manager );
 468     libvlc_media_release( p_mi->p_md );
 469     vlc_mutex_destroy( &p_mi->object_lock );
 470
 471     libvlc_instance_t *instance = p_mi->p_libvlc_instance;
 472     vlc_object_release( p_mi );
 473     libvlc_release(instance);
 474 }
 475
 476 /**************************************************************************
 477  * Release a Media Instance object.
 478  *
 479  * Function does the locking.
 480  **************************************************************************/
 481 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 482 {
 483     bool destroy;
 484
 485     assert( p_mi );
 486     lock(p_mi);
 487     destroy = !--p_mi->i_refcount;
 488     unlock(p_mi);
 489
 490     if( destroy )
 491         libvlc_media_player_destroy( p_mi );
 492 }
 493
 494 /**************************************************************************
 495  * Retain a Media Instance object.
 496  *
 497  * Caller must hold the lock.
 498  **************************************************************************/
 499 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 500 {
 501     assert( p_mi );
 502
 503     lock(p_mi);
 504     p_mi->i_refcount++;
 505     unlock(p_mi);
 506 }
 507
 508 /**************************************************************************
 509  * Set the Media descriptor associated with the instance.
 510  *
 511  * Enter without lock -- function will lock the object.
 512  **************************************************************************/
 513 void libvlc_media_player_set_media(
 514                             libvlc_media_player_t *p_mi,
 515                             libvlc_media_t *p_md )
 516 {
 517     lock(p_mi);
 518
 519     /* FIXME I am not sure if it is a user request or on die(eof/error)
 520      * request here */
 521     release_input_thread( p_mi,
 522                           p_mi->p_input_thread &&
 523                           !p_mi->p_input_thread->b_eof &&
 524                           !p_mi->p_input_thread->b_error );
 525
 526     set_state( p_mi, libvlc_NothingSpecial, true );
 527
 528     libvlc_media_release( p_mi->p_md );
 529
 530     if( !p_md )
 531     {
 532         p_mi->p_md = NULL;
 533         unlock(p_mi);
 534         return; /* It is ok to pass a NULL md */
 535     }
 536
 537     libvlc_media_retain( p_md );
 538     p_mi->p_md = p_md;
 539
 540     /* The policy here is to ignore that we were created using a different
 541      * libvlc_instance, because we don't really care */
 542     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 543
 544     unlock(p_mi);
 545
 546     /* Send an event for the newly available media */
 547     libvlc_event_t event;
 548     event.type = libvlc_MediaPlayerMediaChanged;
 549     event.u.media_player_media_changed.new_media = p_md;
 550     libvlc_event_send( p_mi->p_event_manager, &event );
 551
 552 }
 553
 554 /**************************************************************************
 555  * Get the Media descriptor associated with the instance.
 556  **************************************************************************/
 557 libvlc_media_t *
 558 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
 559 {
 560     libvlc_media_t *p_m;
 561
 562     lock(p_mi);
 563     p_m = p_mi->p_md;
 564     if( p_m )
 565         libvlc_media_retain( p_mi->p_md );
 566     unlock(p_mi);
 567     return p_mi->p_md;
 568 }
 569
 570 /**************************************************************************
 571  * Get the event Manager.
 572  **************************************************************************/
 573 libvlc_event_manager_t *
 574 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
 575 {
 576     return p_mi->p_event_manager;
 577 }
 578
 579 /**************************************************************************
 580  * Tell media player to start playing.
 581  **************************************************************************/
 582 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
 583 {
 584     input_thread_t * p_input_thread;
 585
 586     if( (p_input_thread = libvlc_get_input_thread( p_mi )) )
 587     {
 588         /* A thread already exists, send it a play message */
 589         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 590         vlc_object_release( p_input_thread );
 591         return 0;
 592     }
 593
 594     /* Ignore previous exception */
 595     lock(p_mi);
 596
 597     if( !p_mi->p_md )
 598     {
 599         unlock(p_mi);
 600         libvlc_printerr( "No associated media descriptor" );
 601         return -1;
 602     }
 603
 604     p_mi->p_input_thread = input_Create( p_mi,
 605                                          p_mi->p_md->p_input_item, NULL,
 606                                          p_mi->p_input_resource );
 607     if( !p_mi->p_input_thread )
 608     {
 609         unlock(p_mi);
 610         libvlc_printerr( "Not enough memory" );
 611         return -1;
 612     }
 613
 614     p_mi->p_input_resource = NULL;
 615     p_input_thread = p_mi->p_input_thread;
 616
 617     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 618     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 619     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 620
 621     if( input_Start( p_input_thread ) )
 622     {
 623         vlc_object_release( p_input_thread );
 624         p_mi->p_input_thread = NULL;
 625     }
 626
 627     unlock(p_mi);
 628     return 0;
 629 }
 630
 631 /**************************************************************************
 632  * Pause.
 633  **************************************************************************/
 634 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
 635 {
 636     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
 637     if( !p_input_thread )
 638         return;
 639
 640     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 641     if( state == libvlc_Playing || state == libvlc_Buffering )
 642     {
 643         if( libvlc_media_player_can_pause( p_mi ) )
 644             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 645         else
 646             libvlc_media_player_stop( p_mi );
 647     }
 648     else
 649         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 650
 651     vlc_object_release( p_input_thread );
 652 }
 653
 654 /**************************************************************************
 655  * Tells whether the media player is currently playing.
 656  *
 657  * Enter with lock held.
 658  **************************************************************************/
 659 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
 660 {
 661     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 662     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 663 }
 664
 665 /**************************************************************************
 666  * Stop playing.
 667  **************************************************************************/
 668 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
 669 {
 670     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 671
 672     lock(p_mi);
 673     release_input_thread( p_mi, true ); /* This will stop the input thread */
 674     unlock(p_mi);
 675
 676     /* Force to go to stopped state, in case we were in Ended, or Error
 677      * state. */
 678     if( state != libvlc_Stopped )
 679     {
 680         set_state( p_mi, libvlc_Stopped, false );
 681
 682         /* Construct and send the event */
 683         libvlc_event_t event;
 684         event.type = libvlc_MediaPlayerStopped;
 685         libvlc_event_send( p_mi->p_event_manager, &event );
 686     }
 687 }
 688
 689 /**************************************************************************
 690  * set_nsobject
 691  **************************************************************************/
 692 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 693                                         void * drawable )
 694 {
 695     assert (p_mi != NULL);
 696 #ifdef __APPLE__
 697     var_SetAddress (p_mi, "drawable-nsobject", drawable);
 698 #else
 699     (void) p_mi; (void)drawable;
 700 #endif
 701 }
 702
 703 /**************************************************************************
 704  * get_nsobject
 705  **************************************************************************/
 706 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 707 {
 708     assert (p_mi != NULL);
 709 #ifdef __APPLE__
 710     return var_GetAddress (p_mi, "drawable-nsobject");
 711 #else
 712     return NULL;
 713 #endif
 714 }
 715
 716 /**************************************************************************
 717  * set_agl
 718  **************************************************************************/
 719 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 720                                   uint32_t drawable )
 721 {
 722 #ifdef __APPLE__
 723     var_SetInteger (p_mi, "drawable-agl", drawable);
 724 #else
 725     (void) p_mi; (void)drawable;
 726 #endif
 727 }
 728
 729 /**************************************************************************
 730  * get_agl
 731  **************************************************************************/
 732 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 733 {
 734     assert (p_mi != NULL);
 735 #ifdef __APPLE__
 736     return var_GetInteger (p_mi, "drawable-agl");
 737 #else
 738     return 0;
 739 #endif
 740 }
 741
 742 /**************************************************************************
 743  * set_xwindow
 744  **************************************************************************/
 745 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 746                                       uint32_t drawable )
 747 {
 748     assert (p_mi != NULL);
 749     var_SetInteger (p_mi, "drawable-xid", drawable);
 750 }
 751
 752 /**************************************************************************
 753  * get_xwindow
 754  **************************************************************************/
 755 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 756 {
 757     return var_GetInteger (p_mi, "drawable-xid");
 758 }
 759
 760 /**************************************************************************
 761  * set_hwnd
 762  **************************************************************************/
 763 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 764                                    void *drawable )
 765 {
 766     assert (p_mi != NULL);
 767 #ifdef WIN32
 768     var_SetAddress (p_mi, "drawable-hwnd", drawable);
 769 #else
 770     (void) p_mi; (void) drawable;
 771 #endif
 772 }
 773
 774 /**************************************************************************
 775  * get_hwnd
 776  **************************************************************************/
 777 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 778 {
 779     assert (p_mi != NULL);
 780 #ifdef WIN32
 781     return var_GetAddress (p_mi, "drawable-hwnd");
 782 #else
 783     return NULL;
 784 #endif
 785 }
 786
 787 /**************************************************************************
 788  * Getters for stream information
 789  **************************************************************************/
 790 libvlc_time_t libvlc_media_player_get_length(
 791                              libvlc_media_player_t *p_mi )
 792 {
 793     input_thread_t *p_input_thread;
 794     libvlc_time_t i_time;
 795
 796     p_input_thread = libvlc_get_input_thread ( p_mi );
 797     if( !p_input_thread )
 798         return -1;
 799
 800     i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
 801     vlc_object_release( p_input_thread );
 802
 803     return i_time;
 804 }
 805
 806 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
 807 {
 808     input_thread_t *p_input_thread;
 809     libvlc_time_t i_time;
 810
 811     p_input_thread = libvlc_get_input_thread ( p_mi );
 812     if( !p_input_thread )
 813         return -1;
 814
 815     i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
 816     vlc_object_release( p_input_thread );
 817     return i_time;
 818 }
 819
 820 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
 821                                    libvlc_time_t i_time )
 822 {
 823     input_thread_t *p_input_thread;
 824
 825     p_input_thread = libvlc_get_input_thread ( p_mi );
 826     if( !p_input_thread )
 827         return;
 828
 829     var_SetTime( p_input_thread, "time", to_mtime(i_time) );
 830     vlc_object_release( p_input_thread );
 831 }
 832
 833 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
 834                                        float position )
 835 {
 836     input_thread_t *p_input_thread;
 837
 838     p_input_thread = libvlc_get_input_thread ( p_mi );
 839     if( !p_input_thread )
 840         return;
 841
 842     var_SetFloat( p_input_thread, "position", position );
 843     vlc_object_release( p_input_thread );
 844 }
 845
 846 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
 847 {
 848     input_thread_t *p_input_thread;
 849     float f_position;
 850
 851     p_input_thread = libvlc_get_input_thread ( p_mi );
 852     if( !p_input_thread )
 853         return -1.0;
 854
 855     f_position = var_GetFloat( p_input_thread, "position" );
 856     vlc_object_release( p_input_thread );
 857
 858     return f_position;
 859 }
 860
 861 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
 862                                       int chapter )
 863 {
 864     input_thread_t *p_input_thread;
 865
 866     p_input_thread = libvlc_get_input_thread ( p_mi );
 867     if( !p_input_thread )
 868         return;
 869
 870     var_SetInteger( p_input_thread, "chapter", chapter );
 871     vlc_object_release( p_input_thread );
 872 }
 873
 874 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
 875 {
 876     input_thread_t *p_input_thread;
 877     int i_chapter;
 878
 879     p_input_thread = libvlc_get_input_thread ( p_mi );
 880     if( !p_input_thread )
 881         return -1;
 882
 883     i_chapter = var_GetInteger( p_input_thread, "chapter" );
 884     vlc_object_release( p_input_thread );
 885
 886     return i_chapter;
 887 }
 888
 889 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
 890 {
 891     input_thread_t *p_input_thread;
 892     vlc_value_t val;
 893
 894     p_input_thread = libvlc_get_input_thread ( p_mi );
 895     if( !p_input_thread )
 896         return -1;
 897
 898     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 899     vlc_object_release( p_input_thread );
 900
 901     return val.i_int;
 902 }
 903
 904 int libvlc_media_player_get_chapter_count_for_title(
 905                                  libvlc_media_player_t *p_mi,
 906                                  int i_title )
 907 {
 908     input_thread_t *p_input_thread;
 909     vlc_value_t val;
 910
 911     p_input_thread = libvlc_get_input_thread ( p_mi );
 912     if( !p_input_thread )
 913         return -1;
 914
 915     char *psz_name;
 916     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 917     {
 918         vlc_object_release( p_input_thread );
 919         return -1;
 920     }
 921     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 922     vlc_object_release( p_input_thread );
 923     free( psz_name );
 924
 925     return val.i_int;
 926 }
 927
 928 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
 929                                     int i_title )
 930 {
 931     input_thread_t *p_input_thread;
 932
 933     p_input_thread = libvlc_get_input_thread ( p_mi );
 934     if( !p_input_thread )
 935         return;
 936
 937     var_SetInteger( p_input_thread, "title", i_title );
 938     vlc_object_release( p_input_thread );
 939
 940     //send event
 941     libvlc_event_t event;
 942     event.type = libvlc_MediaPlayerTitleChanged;
 943     event.u.media_player_title_changed.new_title = i_title;
 944     libvlc_event_send( p_mi->p_event_manager, &event );
 945 }
 946
 947 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
 948 {
 949     input_thread_t *p_input_thread;
 950     int i_title;
 951
 952     p_input_thread = libvlc_get_input_thread ( p_mi );
 953     if( !p_input_thread )
 954         return -1;
 955
 956     i_title = var_GetInteger( p_input_thread, "title" );
 957     vlc_object_release( p_input_thread );
 958
 959     return i_title;
 960 }
 961
 962 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
 963 {
 964     input_thread_t *p_input_thread;
 965     vlc_value_t val;
 966
 967     p_input_thread = libvlc_get_input_thread ( p_mi );
 968     if( !p_input_thread )
 969         return -1;
 970
 971     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
 972     vlc_object_release( p_input_thread );
 973
 974     return val.i_int;
 975 }
 976
 977 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
 978 {
 979     input_thread_t *p_input_thread;
 980
 981     p_input_thread = libvlc_get_input_thread ( p_mi );
 982     if( !p_input_thread )
 983         return;
 984
 985     int i_type = var_Type( p_input_thread, "next-chapter" );
 986     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
 987                             "next-chapter":"next-title", true );
 988
 989     vlc_object_release( p_input_thread );
 990 }
 991
 992 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
 993 {
 994     input_thread_t *p_input_thread;
 995
 996     p_input_thread = libvlc_get_input_thread ( p_mi );
 997     if( !p_input_thread )
 998         return;
 999
1000     int i_type = var_Type( p_input_thread, "next-chapter" );
1001     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1002                             "prev-chapter":"prev-title", true );
1003
1004     vlc_object_release( p_input_thread );
1005 }
1006
1007 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
1008 {
1009     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1010     double f_fps = 0.0;
1011
1012     if( p_input_thread )
1013     {
1014         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1015             f_fps = 0.0;
1016         vlc_object_release( p_input_thread );
1017     }
1018     return f_fps;
1019 }
1020
1021 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1022 {
1023     bool b_will_play;
1024     input_thread_t *p_input_thread =
1025                             libvlc_get_input_thread ( p_mi );
1026     if ( !p_input_thread )
1027         return false;
1028
1029     b_will_play = !p_input_thread->b_die && !p_input_thread->b_dead;
1030     vlc_object_release( p_input_thread );
1031
1032     return b_will_play;
1033 }
1034
1035 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1036 {
1037     input_thread_t *p_input_thread;
1038     bool b_can_rewind;
1039
1040     p_input_thread = libvlc_get_input_thread ( p_mi );
1041     if( !p_input_thread )
1042         return -1;
1043
1044     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1045     if( (rate < 0.0) && !b_can_rewind )
1046     {
1047         vlc_object_release( p_input_thread );
1048         libvlc_printerr( "Invalid playback rate" );
1049         return -1;
1050     }
1051
1052     var_SetFloat( p_input_thread, "rate", rate );
1053     vlc_object_release( p_input_thread );
1054     return 0;
1055 }
1056
1057 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1058 {
1059     input_thread_t *p_input_thread;
1060     float f_rate;
1061     bool b_can_rewind;
1062
1063     p_input_thread = libvlc_get_input_thread ( p_mi );
1064     if( !p_input_thread )
1065         return 0.0;  /* rate < 0 indicates rewind */
1066
1067     f_rate = var_GetFloat( p_input_thread, "rate" );
1068     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1069     /* FIXME: why are negative values forbidden ?? (rewinding) */
1070     if( f_rate < 0 && !b_can_rewind )
1071     {
1072         vlc_object_release( p_input_thread );
1073         return 0.0;
1074     }
1075     vlc_object_release( p_input_thread );
1076
1077     return f_rate;
1078 }
1079
1080 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1081 {
1082     lock(p_mi);
1083     libvlc_state_t state = p_mi->state;
1084     unlock(p_mi);
1085     return state;
1086 }
1087
1088 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1089 {
1090     input_thread_t *p_input_thread;
1091     bool b_seekable;
1092
1093     p_input_thread = libvlc_get_input_thread ( p_mi );
1094     if ( !p_input_thread )
1095         return false;
1096     b_seekable = var_GetBool( p_input_thread, "can-seek" );
1097     vlc_object_release( p_input_thread );
1098
1099     return b_seekable;
1100 }
1101
1102 /* internal function, used by audio, video */
1103 libvlc_track_description_t *
1104         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1105                                       const char *psz_variable )
1106 {
1107     input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1108     libvlc_track_description_t *p_track_description = NULL,
1109                                *p_actual, *p_previous;
1110
1111     if( !p_input )
1112         return NULL;
1113
1114     vlc_value_t val_list, text_list;
1115     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1116
1117     /* no tracks */
1118     if( val_list.p_list->i_count <= 0 )
1119         goto end;
1120
1121     p_track_description = ( libvlc_track_description_t * )
1122         malloc( sizeof( libvlc_track_description_t ) );
1123     if ( !p_track_description )
1124     {
1125         libvlc_printerr( "Not enough memory" );
1126         goto end;
1127     }
1128     p_actual = p_track_description;
1129     p_previous = NULL;
1130     for( int i = 0; i < val_list.p_list->i_count; i++ )
1131     {
1132         if( !p_actual )
1133         {
1134             p_actual = ( libvlc_track_description_t * )
1135                 malloc( sizeof( libvlc_track_description_t ) );
1136             if ( !p_actual )
1137             {
1138                 libvlc_track_description_release( p_track_description );
1139                 libvlc_printerr( "Not enough memory" );
1140                 goto end;
1141             }
1142         }
1143         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1144         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1145         p_actual->p_next = NULL;
1146         if( p_previous )
1147             p_previous->p_next = p_actual;
1148         p_previous = p_actual;
1149         p_actual =  NULL;
1150     }
1151
1152 end:
1153     var_FreeList( &val_list, &text_list );
1154     vlc_object_release( p_input );
1155
1156     return p_track_description;
1157 }
1158
1159 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1160 {
1161     libvlc_track_description_t *p_actual, *p_before;
1162     p_actual = p_td;
1163
1164     while ( p_actual )
1165     {
1166         free( p_actual->psz_name );
1167         p_before = p_actual;
1168         p_actual = p_before->p_next;
1169         free( p_before );
1170     }
1171 }
1172
1173 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1174 {
1175     input_thread_t *p_input_thread;
1176     bool b_can_pause;
1177
1178     p_input_thread = libvlc_get_input_thread ( p_mi );
1179     if ( !p_input_thread )
1180         return false;
1181     b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1182     vlc_object_release( p_input_thread );
1183
1184     return b_can_pause;
1185 }
1186
1187 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1188 {
1189     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1190     if( p_input_thread != NULL )
1191     {
1192         var_TriggerCallback( p_input_thread, "frame-next" );
1193         vlc_object_release( p_input_thread );
1194     }
1195 }