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 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 #include "libvlc_internal.h"
  25
  26 #include <vlc/libvlc.h>
  27 #include <vlc_demux.h>
  28 #include <vlc_input.h>
  29 #include <vlc_vout.h>
  30 #include "libvlc.h"
  31 #include <assert.h>
  32
  33 static int
  34 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
  35                         vlc_value_t oldval, vlc_value_t newval,
  36                         void * p_userdata );
  37 static int
  38 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
  39                         vlc_value_t oldval, vlc_value_t newval,
  40                         void * p_userdata );
  41 static int
  42 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
  43                      vlc_value_t oldval, vlc_value_t newval,
  44                      void * p_userdata );
  45
  46 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
  47                        vlc_value_t oldval, vlc_value_t newval, void *p_data );
  48
  49 static const libvlc_state_t vlc_to_libvlc_state_array[] =
  50 {
  51     [INIT_S]        = libvlc_NothingSpecial,
  52     [OPENING_S]     = libvlc_Opening,
  53     [PLAYING_S]     = libvlc_Playing,
  54     [PAUSE_S]       = libvlc_Paused,
  55     [END_S]         = libvlc_Ended,
  56     [ERROR_S]       = libvlc_Error,
  57 };
  58
  59 static inline libvlc_state_t vlc_to_libvlc_state( int vlc_state )
  60 {
  61     if( vlc_state < 0 || vlc_state > 6 )
  62         return libvlc_Ended;
  63
  64     return vlc_to_libvlc_state_array[vlc_state];
  65 }
  66
  67 /*
  68  * Release the associated input thread.
  69  *
  70  * Object lock is NOT held.
  71  */
  72 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
  73 {
  74     input_thread_t * p_input_thread;
  75
  76     if( !p_mi || !p_mi->p_input_thread )
  77         return;
  78
  79     p_input_thread = p_mi->p_input_thread;
  80
  81     /* No one is tracking this input_thread apart from us. Destroy it. */
  82     if( p_mi->b_own_its_input_thread )
  83     {
  84         var_DelCallback( p_input_thread, "can-seek",
  85                          input_seekable_changed, p_mi );
  86         var_DelCallback( p_input_thread, "can-pause",
  87                          input_pausable_changed, p_mi );
  88         var_DelCallback( p_input_thread, "intf-event",
  89                          input_event_changed, p_mi );
  90
  91         /* We owned this one */
  92         input_StopThread( p_input_thread, b_input_abort );
  93         vlc_thread_join( p_input_thread );
  94
  95         var_Destroy( p_input_thread, "drawable-hwnd" );
  96         var_Destroy( p_input_thread, "drawable-xid" );
  97         var_Destroy( p_input_thread, "drawable-agl" );
  98     }
  99
 100     vlc_object_release( p_input_thread );
 101
 102     p_mi->p_input_thread = NULL;
 103 }
 104
 105 /*
 106  * Retrieve the input thread. Be sure to release the object
 107  * once you are done with it. (libvlc Internal)
 108  *
 109  * Function will lock the object.
 110  */
 111 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi,
 112                                          libvlc_exception_t *p_e )
 113 {
 114     input_thread_t *p_input_thread;
 115
 116     if( !p_mi ) RAISENULL( "Media Instance is NULL" );
 117
 118     vlc_mutex_lock( &p_mi->object_lock );
 119
 120     if( !p_mi->p_input_thread )
 121     {
 122         vlc_mutex_unlock( &p_mi->object_lock );
 123         RAISENULL( "Input is NULL" );
 124     }
 125
 126     p_input_thread = p_mi->p_input_thread;
 127     vlc_object_hold( p_input_thread );
 128
 129     vlc_mutex_unlock( &p_mi->object_lock );
 130
 131     return p_input_thread;
 132 }
 133
 134 static int
 135 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 136                         vlc_value_t oldval, vlc_value_t newval,
 137                         void * p_userdata )
 138 {
 139     VLC_UNUSED(oldval);
 140     VLC_UNUSED(p_this);
 141     VLC_UNUSED(psz_cmd);
 142     libvlc_media_player_t * p_mi = p_userdata;
 143     libvlc_event_t event;
 144
 145     libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 146     event.type = libvlc_MediaPlayerSeekableChanged;
 147     event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
 148
 149     libvlc_event_send( p_mi->p_event_manager, &event );
 150     return VLC_SUCCESS;
 151 }
 152
 153 static int
 154 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 155                         vlc_value_t oldval, vlc_value_t newval,
 156                         void * p_userdata )
 157 {
 158     VLC_UNUSED(oldval);
 159     VLC_UNUSED(p_this);
 160     VLC_UNUSED(psz_cmd);
 161     libvlc_media_player_t * p_mi = p_userdata;
 162     libvlc_event_t event;
 163
 164     libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 165     event.type = libvlc_MediaPlayerPausableChanged;
 166     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 167
 168     libvlc_event_send( p_mi->p_event_manager, &event );
 169     return VLC_SUCCESS;
 170 }
 171
 172 static int
 173 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 174                      vlc_value_t oldval, vlc_value_t newval,
 175                      void * p_userdata )
 176 {
 177     VLC_UNUSED(oldval);
 178     input_thread_t * p_input = (input_thread_t *)p_this;
 179     libvlc_media_player_t * p_mi = p_userdata;
 180     libvlc_event_t event;
 181
 182     assert( !strcmp( psz_cmd, "intf-event" ) );
 183
 184     if( newval.i_int == INPUT_EVENT_STATE )
 185     {
 186         libvlc_state_t libvlc_state;
 187
 188         switch ( var_GetInteger( p_input, "state" ) )
 189         {
 190             case INIT_S:
 191                 libvlc_state = libvlc_NothingSpecial;
 192                 event.type = libvlc_MediaPlayerNothingSpecial;
 193                 break;
 194             case OPENING_S:
 195                 libvlc_state = libvlc_Opening;
 196                 event.type = libvlc_MediaPlayerOpening;
 197                 break;
 198             case PLAYING_S:
 199                 libvlc_state = libvlc_Playing;
 200                 event.type = libvlc_MediaPlayerPlaying;
 201                 break;
 202             case PAUSE_S:
 203                 libvlc_state = libvlc_Paused;
 204                 event.type = libvlc_MediaPlayerPaused;
 205                 break;
 206             case END_S:
 207                 libvlc_state = libvlc_Ended;
 208                 event.type = libvlc_MediaPlayerEndReached;
 209                 break;
 210             case ERROR_S:
 211                 libvlc_state = libvlc_Error;
 212                 event.type = libvlc_MediaPlayerEncounteredError;
 213                 break;
 214
 215             default:
 216                 return VLC_SUCCESS;
 217         }
 218
 219         libvlc_media_set_state( p_mi->p_md, libvlc_state, NULL );
 220         libvlc_event_send( p_mi->p_event_manager, &event );
 221     }
 222     else if( newval.i_int == INPUT_EVENT_TIMES )
 223     {
 224         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 225             return VLC_SUCCESS; /* Don't send the position while stopped */
 226
 227         /* */
 228         event.type = libvlc_MediaPlayerPositionChanged;
 229         event.u.media_player_position_changed.new_position =
 230                                           var_GetFloat( p_input, "position" );
 231         libvlc_event_send( p_mi->p_event_manager, &event );
 232
 233         /* */
 234         event.type = libvlc_MediaPlayerTimeChanged;
 235         event.u.media_player_time_changed.new_time =
 236                                                var_GetTime( p_input, "time" );
 237         libvlc_event_send( p_mi->p_event_manager, &event );
 238     }
 239
 240     return VLC_SUCCESS;
 241
 242 }
 243
 244
 245 /**************************************************************************
 246  * Create a Media Instance object.
 247  *
 248  * Refcount strategy:
 249  * - All items created by _new start with a refcount set to 1.
 250  * - Accessor _release decrease the refcount by 1, if after that
 251  *   operation the refcount is 0, the object is destroyed.
 252  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 253  *
 254  * Object locking strategy:
 255  * - No lock held while in constructor.
 256  * - When accessing any member variable this lock is held. (XXX who locks?)
 257  * - When attempting to destroy the object the lock is also held.
 258  **************************************************************************/
 259 libvlc_media_player_t *
 260 libvlc_media_player_new( libvlc_instance_t * p_libvlc_instance,
 261                            libvlc_exception_t * p_e )
 262 {
 263     libvlc_media_player_t * p_mi;
 264
 265     if( !p_libvlc_instance )
 266     {
 267         libvlc_exception_raise( p_e, "invalid libvlc instance" );
 268         return NULL;
 269     }
 270
 271     p_mi = malloc( sizeof(libvlc_media_player_t) );
 272     if( !p_mi )
 273     {
 274         libvlc_exception_raise( p_e, "Not enough memory" );
 275         return NULL;
 276     }
 277     p_mi->p_md = NULL;
 278     p_mi->drawable.agl = 0;
 279     p_mi->drawable.xid = 0;
 280     p_mi->drawable.hwnd = NULL;
 281     p_mi->p_libvlc_instance = p_libvlc_instance;
 282     p_mi->p_input_thread = NULL;
 283     p_mi->i_refcount = 1;
 284     p_mi->b_own_its_input_thread = true;
 285     vlc_mutex_init( &p_mi->object_lock );
 286     p_mi->p_event_manager = libvlc_event_manager_new( p_mi,
 287             p_libvlc_instance, p_e );
 288     if( libvlc_exception_raised( p_e ) )
 289     {
 290         vlc_mutex_destroy( &p_mi->object_lock );
 291         free( p_mi );
 292         return NULL;
 293     }
 294
 295     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 296             libvlc_MediaPlayerNothingSpecial, p_e );
 297     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 298             libvlc_MediaPlayerOpening, p_e );
 299     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 300             libvlc_MediaPlayerBuffering, p_e );
 301     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 302             libvlc_MediaPlayerPlaying, p_e );
 303     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 304             libvlc_MediaPlayerPaused, p_e );
 305     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 306             libvlc_MediaPlayerStopped, p_e );
 307     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 308             libvlc_MediaPlayerForward, p_e );
 309     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 310             libvlc_MediaPlayerBackward, p_e );
 311     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 312             libvlc_MediaPlayerEndReached, p_e );
 313     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 314             libvlc_MediaPlayerEncounteredError, p_e );
 315
 316     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 317             libvlc_MediaPlayerPositionChanged, p_e );
 318     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 319             libvlc_MediaPlayerTimeChanged, p_e );
 320      libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 321             libvlc_MediaPlayerTitleChanged, p_e );
 322     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 323             libvlc_MediaPlayerSeekableChanged, p_e );
 324     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 325             libvlc_MediaPlayerPausableChanged, p_e );
 326
 327     /* Snapshot initialization */
 328     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 329            libvlc_MediaPlayerSnapshotTaken, p_e );
 330     /* Attach a var callback to the global object to provide the glue between
 331         vout_thread that generates the event and media_player that re-emits it
 332         with its own event manager
 333     */
 334     var_Create( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 335                 VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 336     var_AddCallback( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 337                      SnapshotTakenCallback, p_mi );
 338
 339     return p_mi;
 340 }
 341
 342 /**************************************************************************
 343  * Create a Media Instance object with a media descriptor.
 344  **************************************************************************/
 345 libvlc_media_player_t *
 346 libvlc_media_player_new_from_media(
 347                                     libvlc_media_t * p_md,
 348                                     libvlc_exception_t *p_e )
 349 {
 350     libvlc_media_player_t * p_mi;
 351     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance, p_e );
 352
 353     if( !p_mi )
 354         return NULL;
 355
 356     libvlc_media_retain( p_md );
 357     p_mi->p_md = p_md;
 358
 359     return p_mi;
 360 }
 361
 362 /**************************************************************************
 363  * Create a new media instance object from an input_thread (Libvlc Internal).
 364  **************************************************************************/
 365 libvlc_media_player_t * libvlc_media_player_new_from_input_thread(
 366                                    struct libvlc_instance_t *p_libvlc_instance,
 367                                    input_thread_t *p_input,
 368                                    libvlc_exception_t *p_e )
 369 {
 370     libvlc_media_player_t * p_mi;
 371
 372     if( !p_input )
 373     {
 374         libvlc_exception_raise( p_e, "invalid input thread" );
 375         return NULL;
 376     }
 377
 378     p_mi = libvlc_media_player_new( p_libvlc_instance, p_e );
 379
 380     if( !p_mi )
 381         return NULL;
 382
 383     p_mi->p_md = libvlc_media_new_from_input_item(
 384                     p_libvlc_instance,
 385                     input_GetItem( p_input ), p_e );
 386
 387     if( !p_mi->p_md )
 388     {
 389         libvlc_media_player_destroy( p_mi );
 390         return NULL;
 391     }
 392
 393     /* will be released in media_player_release() */
 394     vlc_object_hold( p_input );
 395
 396     p_mi->p_input_thread = p_input;
 397     p_mi->b_own_its_input_thread = false;
 398
 399     return p_mi;
 400 }
 401
 402 /**************************************************************************
 403  * Destroy a Media Instance object (libvlc internal)
 404  *
 405  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 406  **************************************************************************/
 407 void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 408 {
 409     input_thread_t *p_input_thread;
 410     libvlc_exception_t p_e;
 411
 412     libvlc_exception_init( &p_e );
 413
 414     if( !p_mi )
 415         return;
 416
 417         /* Detach Callback from the main libvlc object */
 418     var_DelCallback( p_mi->p_libvlc_instance->p_libvlc_int,
 419                      "vout-snapshottaken", SnapshotTakenCallback, p_mi );
 420
 421     p_input_thread = libvlc_get_input_thread( p_mi, &p_e );
 422
 423     if( libvlc_exception_raised( &p_e ) )
 424     {
 425         libvlc_event_manager_release( p_mi->p_event_manager );
 426         libvlc_exception_clear( &p_e );
 427         free( p_mi );
 428         return; /* no need to worry about no input thread */
 429     }
 430     vlc_mutex_destroy( &p_mi->object_lock );
 431
 432     vlc_object_release( p_input_thread );
 433
 434     libvlc_media_release( p_mi->p_md );
 435
 436     free( p_mi );
 437 }
 438
 439 /**************************************************************************
 440  * Release a Media Instance object.
 441  *
 442  * Function does the locking.
 443  **************************************************************************/
 444 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 445 {
 446     if( !p_mi )
 447         return;
 448
 449     vlc_mutex_lock( &p_mi->object_lock );
 450
 451     p_mi->i_refcount--;
 452
 453     if( p_mi->i_refcount > 0 )
 454     {
 455         vlc_mutex_unlock( &p_mi->object_lock );
 456         return;
 457     }
 458     vlc_mutex_unlock( &p_mi->object_lock );
 459     vlc_mutex_destroy( &p_mi->object_lock );
 460
 461     release_input_thread( p_mi, true );
 462
 463     libvlc_event_manager_release( p_mi->p_event_manager );
 464
 465     libvlc_media_release( p_mi->p_md );
 466
 467     free( p_mi );
 468 }
 469
 470 /**************************************************************************
 471  * Retain a Media Instance object.
 472  *
 473  * Caller must hold the lock.
 474  **************************************************************************/
 475 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 476 {
 477     if( !p_mi )
 478         return;
 479
 480     p_mi->i_refcount++;
 481 }
 482
 483 /**************************************************************************
 484  * Set the Media descriptor associated with the instance.
 485  *
 486  * Enter without lock -- function will lock the object.
 487  **************************************************************************/
 488 void libvlc_media_player_set_media(
 489                             libvlc_media_player_t *p_mi,
 490                             libvlc_media_t *p_md,
 491                             libvlc_exception_t *p_e )
 492 {
 493     VLC_UNUSED(p_e);
 494
 495     if( !p_mi )
 496         return;
 497
 498     vlc_mutex_lock( &p_mi->object_lock );
 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     if( p_mi->p_md )
 508         libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, p_e );
 509
 510     libvlc_media_release( p_mi->p_md );
 511
 512     if( !p_md )
 513     {
 514         p_mi->p_md = NULL;
 515         vlc_mutex_unlock( &p_mi->object_lock );
 516         return; /* It is ok to pass a NULL md */
 517     }
 518
 519     libvlc_media_retain( p_md );
 520     p_mi->p_md = p_md;
 521
 522     /* The policy here is to ignore that we were created using a different
 523      * libvlc_instance, because we don't really care */
 524     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 525
 526     vlc_mutex_unlock( &p_mi->object_lock );
 527 }
 528
 529 /**************************************************************************
 530  * Get the Media descriptor associated with the instance.
 531  **************************************************************************/
 532 libvlc_media_t *
 533 libvlc_media_player_get_media(
 534                             libvlc_media_player_t *p_mi,
 535                             libvlc_exception_t *p_e )
 536 {
 537     VLC_UNUSED(p_e);
 538
 539     if( !p_mi->p_md )
 540         return NULL;
 541
 542     libvlc_media_retain( p_mi->p_md );
 543     return p_mi->p_md;
 544 }
 545
 546 /**************************************************************************
 547  * Get the event Manager.
 548  **************************************************************************/
 549 libvlc_event_manager_t *
 550 libvlc_media_player_event_manager(
 551                             libvlc_media_player_t *p_mi,
 552                             libvlc_exception_t *p_e )
 553 {
 554     VLC_UNUSED(p_e);
 555
 556     return p_mi->p_event_manager;
 557 }
 558
 559 /**************************************************************************
 560  * Trigger a snapshot Taken Event.
 561  *************************************************************************/
 562 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
 563                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 564 {
 565     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
 566     VLC_UNUSED(p_this) ;
 567
 568     libvlc_media_player_t* p_mi = (libvlc_media_player_t*) p_data ;
 569     libvlc_event_t event ;
 570     event.type = libvlc_MediaPlayerSnapshotTaken ;
 571     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string ;
 572     /* Snapshot psz data is a vlc_variable owned by libvlc object .
 573          Its memmory management is taken care by the obj*/
 574     msg_Dbg( p_this, "about to emit libvlc_snapshot_taken.make psz_str=0x%p"
 575              " (%s)", event.u.media_player_snapshot_taken.psz_filename,
 576              event.u.media_player_snapshot_taken.psz_filename );
 577     libvlc_event_send( p_mi->p_event_manager, &event );
 578
 579     return VLC_SUCCESS;
 580 }
 581
 582 /**************************************************************************
 583  * Tell media player to start playing.
 584  **************************************************************************/
 585 void libvlc_media_player_play( libvlc_media_player_t *p_mi,
 586                                  libvlc_exception_t *p_e )
 587 {
 588     input_thread_t * p_input_thread;
 589
 590     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 591     {
 592         /* A thread already exists, send it a play message */
 593         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 594         vlc_object_release( p_input_thread );
 595         return;
 596     }
 597
 598     /* Ignore previous exception */
 599     libvlc_exception_clear( p_e );
 600
 601     vlc_mutex_lock( &p_mi->object_lock );
 602
 603     if( !p_mi->p_md )
 604     {
 605         libvlc_exception_raise( p_e, "no associated media descriptor" );
 606         vlc_mutex_unlock( &p_mi->object_lock );
 607         return;
 608     }
 609
 610     p_mi->p_input_thread = input_CreateThread(
 611             p_mi->p_libvlc_instance->p_libvlc_int, p_mi->p_md->p_input_item );
 612
 613     if( !p_mi->p_input_thread )
 614     {
 615         vlc_mutex_unlock( &p_mi->object_lock );
 616         return;
 617     }
 618
 619     p_input_thread = p_mi->p_input_thread;
 620
 621     var_Create( p_input_thread, "drawable-agl", VLC_VAR_INTEGER );
 622     if( p_mi->drawable.agl )
 623         var_SetInteger( p_input_thread, "drawable-agl", p_mi->drawable.agl );
 624
 625     var_Create( p_input_thread, "drawable-xid", VLC_VAR_INTEGER );
 626     if( p_mi->drawable.xid )
 627         var_SetInteger( p_input_thread, "drawable-xid", p_mi->drawable.xid );
 628
 629     var_Create( p_input_thread, "drawable-hwnd", VLC_VAR_ADDRESS );
 630     if( p_mi->drawable.hwnd != NULL )
 631     {
 632         vlc_value_t val = { .p_address = p_mi->drawable.hwnd };
 633         var_Set( p_input_thread, "drawable-hwnd", val );
 634     }
 635
 636         var_Create( p_input_thread, "drawable-nsobject", VLC_VAR_ADDRESS );
 637     if( p_mi->drawable.nsobject != NULL )
 638     {
 639         vlc_value_t val = { .p_address = p_mi->drawable.nsobject };
 640         var_Set( p_input_thread, "drawable-nsobject", val );
 641     }
 642
 643     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 644     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 645     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 646
 647     vlc_mutex_unlock( &p_mi->object_lock );
 648 }
 649
 650 /**************************************************************************
 651  * Pause.
 652  **************************************************************************/
 653 void libvlc_media_player_pause( libvlc_media_player_t *p_mi,
 654                                   libvlc_exception_t *p_e )
 655 {
 656     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 657
 658     if( !p_input_thread )
 659         return;
 660
 661     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 662
 663     if( state == libvlc_Playing )
 664     {
 665         if( libvlc_media_player_can_pause( p_mi, p_e ) )
 666             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 667         else
 668             libvlc_media_player_stop( p_mi, p_e );
 669     }
 670     else
 671         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 672
 673     vlc_object_release( p_input_thread );
 674 }
 675
 676 /**************************************************************************
 677  * Tells whether the media player is currently playing.
 678  *
 679  * Enter with lock held.
 680  **************************************************************************/
 681 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi,
 682                                      libvlc_exception_t *p_e )
 683 {
 684     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 685     return libvlc_Playing == state;
 686 }
 687
 688
 689 /**************************************************************************
 690  * Stop playing.
 691  **************************************************************************/
 692 void libvlc_media_player_stop( libvlc_media_player_t *p_mi,
 693                                  libvlc_exception_t *p_e )
 694 {
 695     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 696
 697     if( state == libvlc_Playing || state == libvlc_Paused )
 698     {
 699         /* Send a stop notification event only if we are in playing or
 700          * paused states */
 701         libvlc_media_set_state( p_mi->p_md, libvlc_Ended, p_e );
 702
 703         /* Construct and send the event */
 704         libvlc_event_t event;
 705         event.type = libvlc_MediaPlayerStopped;
 706         libvlc_event_send( p_mi->p_event_manager, &event );
 707     }
 708
 709     if( p_mi->b_own_its_input_thread )
 710     {
 711         vlc_mutex_lock( &p_mi->object_lock );
 712         release_input_thread( p_mi, true ); /* This will stop the input thread */
 713         vlc_mutex_unlock( &p_mi->object_lock );
 714     }
 715     else
 716     {
 717         input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 718
 719         if( !p_input_thread )
 720             return;
 721
 722         input_StopThread( p_input_thread, true );
 723         vlc_object_release( p_input_thread );
 724         p_mi->p_input_thread = NULL;
 725     }
 726 }
 727
 728 /**************************************************************************
 729  * set_nsobject
 730  **************************************************************************/
 731 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 732                                                                  void * drawable,
 733                                                                  libvlc_exception_t *p_e )
 734 {
 735     (void) p_e;
 736     p_mi->drawable.nsobject = drawable;
 737 }
 738
 739 /**************************************************************************
 740  * get_agl
 741  **************************************************************************/
 742 uint32_t libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 743 {
 744     return p_mi->drawable.nsobject;
 745 }
 746
 747 /**************************************************************************
 748  * set_agl
 749  **************************************************************************/
 750 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 751                                       uint32_t drawable,
 752                                       libvlc_exception_t *p_e )
 753 {
 754     (void) p_e;
 755     p_mi->drawable.agl = drawable;
 756 }
 757
 758 /**************************************************************************
 759  * get_agl
 760  **************************************************************************/
 761 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 762 {
 763     return p_mi->drawable.agl;
 764 }
 765
 766 /**************************************************************************
 767  * set_xwindow
 768  **************************************************************************/
 769 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 770                                       uint32_t drawable,
 771                                       libvlc_exception_t *p_e )
 772 {
 773     (void) p_e;
 774     p_mi->drawable.xid = drawable;
 775 }
 776
 777 /**************************************************************************
 778  * get_xwindow
 779  **************************************************************************/
 780 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 781 {
 782     return p_mi->drawable.xid;
 783 }
 784
 785 /**************************************************************************
 786  * set_hwnd
 787  **************************************************************************/
 788 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 789                                    void *drawable,
 790                                    libvlc_exception_t *p_e )
 791 {
 792     (void) p_e;
 793     p_mi->drawable.hwnd = drawable;
 794 }
 795
 796 /**************************************************************************
 797  * get_hwnd
 798  **************************************************************************/
 799 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 800 {
 801     return p_mi->drawable.hwnd;
 802 }
 803
 804 /**************************************************************************
 805  * Set Drawable
 806  **************************************************************************/
 807 void libvlc_media_player_set_drawable( libvlc_media_player_t *p_mi,
 808                                        libvlc_drawable_t drawable,
 809                                        libvlc_exception_t *p_e )
 810 {
 811 #ifdef WIN32
 812     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 813         p_mi->drawable.hwnd = (HWND)drawable;
 814     else
 815         libvlc_exception_raise(p_e, "Operation not supported");
 816 #elif defined(__APPLE__)
 817     p_mi->drawable.agl = drawable;
 818     (void) p_e;
 819 #else
 820     p_mi->drawable.xid = drawable;
 821     (void) p_e;
 822 #endif
 823 }
 824
 825 /**************************************************************************
 826  * Get Drawable
 827  **************************************************************************/
 828 libvlc_drawable_t
 829 libvlc_media_player_get_drawable ( libvlc_media_player_t *p_mi,
 830                                    libvlc_exception_t *p_e )
 831 {
 832     VLC_UNUSED(p_e);
 833
 834 #ifdef WIN32
 835     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 836         return (libvlc_drawable_t)p_mi->drawable.hwnd;
 837     else
 838         return 0;
 839 #elif defined(__APPLE__)
 840     return p_mi->drawable.agl;
 841 #else
 842     return p_mi->drawable.xid;
 843 #endif
 844 }
 845
 846 /**************************************************************************
 847  * Getters for stream information
 848  **************************************************************************/
 849 libvlc_time_t libvlc_media_player_get_length(
 850                              libvlc_media_player_t *p_mi,
 851                              libvlc_exception_t *p_e )
 852 {
 853     input_thread_t *p_input_thread;
 854     vlc_value_t val;
 855
 856     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 857     if( !p_input_thread )
 858         return -1;
 859
 860     var_Get( p_input_thread, "length", &val );
 861     vlc_object_release( p_input_thread );
 862
 863     return (val.i_time+500LL)/1000LL;
 864 }
 865
 866 libvlc_time_t libvlc_media_player_get_time(
 867                                    libvlc_media_player_t *p_mi,
 868                                    libvlc_exception_t *p_e )
 869 {
 870     input_thread_t *p_input_thread;
 871     vlc_value_t val;
 872
 873     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 874     if( !p_input_thread )
 875         return -1;
 876
 877     var_Get( p_input_thread , "time", &val );
 878     vlc_object_release( p_input_thread );
 879     return (val.i_time+500LL)/1000LL;
 880 }
 881
 882 void libvlc_media_player_set_time(
 883                                  libvlc_media_player_t *p_mi,
 884                                  libvlc_time_t time,
 885                                  libvlc_exception_t *p_e )
 886 {
 887     input_thread_t *p_input_thread;
 888
 889     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 890     if( !p_input_thread )
 891         return;
 892
 893     var_SetTime( p_input_thread, "time", time*1000LL );
 894     vlc_object_release( p_input_thread );
 895 }
 896
 897 void libvlc_media_player_set_position(
 898                                 libvlc_media_player_t *p_mi,
 899                                 float position,
 900                                 libvlc_exception_t *p_e )
 901 {
 902     input_thread_t *p_input_thread;
 903
 904     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 905     if( !p_input_thread )
 906         return;
 907
 908     var_SetFloat( p_input_thread, "position", position );
 909     vlc_object_release( p_input_thread );
 910 }
 911
 912 float libvlc_media_player_get_position(
 913                                  libvlc_media_player_t *p_mi,
 914                                  libvlc_exception_t *p_e )
 915 {
 916     input_thread_t *p_input_thread;
 917     vlc_value_t val;
 918
 919     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 920     if( !p_input_thread )
 921         return -1.0;
 922
 923     var_Get( p_input_thread, "position", &val );
 924     vlc_object_release( p_input_thread );
 925
 926     return val.f_float;
 927 }
 928
 929 void libvlc_media_player_set_chapter(
 930                                  libvlc_media_player_t *p_mi,
 931                                  int chapter,
 932                                  libvlc_exception_t *p_e )
 933 {
 934     input_thread_t *p_input_thread;
 935
 936     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 937     if( !p_input_thread )
 938         return;
 939
 940     var_SetInteger( p_input_thread, "chapter", chapter );
 941     vlc_object_release( p_input_thread );
 942 }
 943
 944 int libvlc_media_player_get_chapter(
 945                                  libvlc_media_player_t *p_mi,
 946                                  libvlc_exception_t *p_e )
 947 {
 948     input_thread_t *p_input_thread;
 949     vlc_value_t val;
 950
 951     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 952     if( !p_input_thread )
 953         return -1;
 954
 955     var_Get( p_input_thread, "chapter", &val );
 956     vlc_object_release( p_input_thread );
 957
 958     return val.i_int;
 959 }
 960
 961 int libvlc_media_player_get_chapter_count(
 962                                  libvlc_media_player_t *p_mi,
 963                                  libvlc_exception_t *p_e )
 964 {
 965     input_thread_t *p_input_thread;
 966     vlc_value_t val;
 967
 968     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 969     if( !p_input_thread )
 970         return -1;
 971
 972     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 973     vlc_object_release( p_input_thread );
 974
 975     return val.i_int;
 976 }
 977
 978 int libvlc_media_player_get_chapter_count_for_title(
 979                                  libvlc_media_player_t *p_mi,
 980                                  int i_title,
 981                                  libvlc_exception_t *p_e )
 982 {
 983     input_thread_t *p_input_thread;
 984     vlc_value_t val;
 985
 986     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 987     if( !p_input_thread )
 988         return -1;
 989
 990     char *psz_name;
 991     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 992     {
 993         vlc_object_release( p_input_thread );
 994         return -1;
 995     }
 996     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 997     vlc_object_release( p_input_thread );
 998     free( psz_name );
 999
1000     return val.i_int;
1001 }
1002
1003 void libvlc_media_player_set_title(
1004                                  libvlc_media_player_t *p_mi,
1005                                  int i_title,
1006                                  libvlc_exception_t *p_e )
1007 {
1008     input_thread_t *p_input_thread;
1009
1010     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1011     if( !p_input_thread )
1012         return;
1013
1014     var_SetInteger( p_input_thread, "title", i_title );
1015     vlc_object_release( p_input_thread );
1016
1017     //send event
1018     libvlc_event_t event;
1019     event.type = libvlc_MediaPlayerTitleChanged;
1020     event.u.media_player_title_changed.new_title = i_title;
1021     libvlc_event_send( p_mi->p_event_manager, &event );
1022 }
1023
1024 int libvlc_media_player_get_title(
1025                                  libvlc_media_player_t *p_mi,
1026                                  libvlc_exception_t *p_e )
1027 {
1028     input_thread_t *p_input_thread;
1029     vlc_value_t val;
1030
1031     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1032     if( !p_input_thread )
1033         return -1;
1034
1035     var_Get( p_input_thread, "title", &val );
1036     vlc_object_release( p_input_thread );
1037
1038     return val.i_int;
1039 }
1040
1041 int libvlc_media_player_get_title_count(
1042                                  libvlc_media_player_t *p_mi,
1043                                  libvlc_exception_t *p_e )
1044 {
1045     input_thread_t *p_input_thread;
1046     vlc_value_t val;
1047
1048     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1049     if( !p_input_thread )
1050         return -1;
1051
1052     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1053     vlc_object_release( p_input_thread );
1054
1055     return val.i_int;
1056 }
1057
1058 void libvlc_media_player_next_chapter(
1059                                  libvlc_media_player_t *p_mi,
1060                                  libvlc_exception_t *p_e )
1061 {
1062     input_thread_t *p_input_thread;
1063
1064     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1065     if( !p_input_thread )
1066         return;
1067
1068     int i_type = var_Type( p_input_thread, "next-chapter" );
1069     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1070                             "next-chapter":"next-title", true );
1071
1072     vlc_object_release( p_input_thread );
1073 }
1074
1075 void libvlc_media_player_previous_chapter(
1076                                  libvlc_media_player_t *p_mi,
1077                                  libvlc_exception_t *p_e )
1078 {
1079     input_thread_t *p_input_thread;
1080
1081     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1082     if( !p_input_thread )
1083         return;
1084
1085     int i_type = var_Type( p_input_thread, "next-chapter" );
1086     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1087                             "prev-chapter":"prev-title", true );
1088
1089     vlc_object_release( p_input_thread );
1090 }
1091
1092 float libvlc_media_player_get_fps(
1093                                  libvlc_media_player_t *p_mi,
1094                                  libvlc_exception_t *p_e)
1095 {
1096     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1097     double f_fps = 0.0;
1098
1099     if( p_input_thread )
1100     {
1101         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1102             f_fps = 0.0;
1103         vlc_object_release( p_input_thread );
1104     }
1105     return f_fps;
1106 }
1107
1108 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi,
1109                                      libvlc_exception_t *p_e)
1110 {
1111     input_thread_t *p_input_thread =
1112                             libvlc_get_input_thread ( p_mi, p_e);
1113     if ( !p_input_thread )
1114         return false;
1115
1116     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
1117     {
1118         vlc_object_release( p_input_thread );
1119         return true;
1120     }
1121     vlc_object_release( p_input_thread );
1122     return false;
1123 }
1124
1125 void libvlc_media_player_set_rate(
1126                                  libvlc_media_player_t *p_mi,
1127                                  float rate,
1128                                  libvlc_exception_t *p_e )
1129 {
1130     input_thread_t *p_input_thread;
1131     bool b_can_rewind;
1132
1133     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1134     if( !p_input_thread )
1135         return;
1136
1137     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1138     if( (rate < 0.0) && !b_can_rewind )
1139     {
1140         vlc_object_release( p_input_thread );
1141         libvlc_exception_raise( p_e, "Rate value is invalid" );
1142         return;
1143     }
1144
1145     var_SetInteger( p_input_thread, "rate", 1000.0f/rate );
1146     vlc_object_release( p_input_thread );
1147 }
1148
1149 float libvlc_media_player_get_rate(
1150                                  libvlc_media_player_t *p_mi,
1151                                  libvlc_exception_t *p_e )
1152 {
1153     input_thread_t *p_input_thread;
1154     vlc_value_t val;
1155     bool b_can_rewind;
1156
1157     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1158     if( !p_input_thread )
1159         return 0.0;  /* rate < 0 indicates rewind */
1160
1161     var_Get( p_input_thread, "rate", &val );
1162     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1163     if( (val.i_int < 0) && !b_can_rewind )
1164     {
1165         libvlc_exception_raise( p_e, "invalid rate" );
1166         return 0.0;
1167     }
1168     vlc_object_release( p_input_thread );
1169
1170     return (float)1000.0f/val.i_int;
1171 }
1172
1173 libvlc_state_t libvlc_media_player_get_state(
1174                                  libvlc_media_player_t *p_mi,
1175                                  libvlc_exception_t *p_e )
1176 {
1177     input_thread_t *p_input_thread;
1178     libvlc_state_t state = libvlc_Ended;
1179     vlc_value_t val;
1180
1181     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1182     if( !p_input_thread )
1183     {
1184         /* We do return the right value, no need to throw an exception */
1185         if( libvlc_exception_raised( p_e ) )
1186             libvlc_exception_clear( p_e );
1187         return state;
1188     }
1189
1190     var_Get( p_input_thread, "state", &val );
1191     state = vlc_to_libvlc_state(val.i_int);
1192
1193     if( state == libvlc_Playing )
1194     {
1195         float caching;
1196         caching = var_GetFloat( p_input_thread, "cache" );
1197         if( caching > 0.0 && caching < 1.0 )
1198             state = libvlc_Buffering;
1199     }
1200     vlc_object_release( p_input_thread );
1201     return state;
1202 }
1203
1204 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi,
1205                                        libvlc_exception_t *p_e )
1206 {
1207     input_thread_t *p_input_thread;
1208     vlc_value_t val;
1209
1210     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1211     if ( !p_input_thread )
1212     {
1213         /* We do return the right value, no need to throw an exception */
1214         if( libvlc_exception_raised( p_e ) )
1215             libvlc_exception_clear( p_e );
1216         return false;
1217     }
1218     var_Get( p_input_thread, "can-seek", &val );
1219     vlc_object_release( p_input_thread );
1220
1221     return val.b_bool;
1222 }
1223
1224 /* internal function, used by audio, video */
1225 libvlc_track_description_t *
1226         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1227                                       const char *psz_variable,
1228                                       libvlc_exception_t *p_e )
1229 {
1230     input_thread_t *p_input = libvlc_get_input_thread( p_mi, p_e );
1231
1232     if( !p_input )
1233         return NULL;
1234
1235     vlc_value_t val_list, text_list;
1236     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1237
1238     if( val_list.p_list->i_count <= 0 ) /* no tracks */
1239         return NULL;
1240
1241     libvlc_track_description_t *p_track_description, *p_actual, *p_previous;
1242     p_track_description = ( libvlc_track_description_t * )
1243         malloc( sizeof( libvlc_track_description_t ) );
1244     if ( !p_track_description )
1245     {
1246         var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1247                     &val_list, &text_list);
1248         vlc_object_release( p_input );
1249         libvlc_exception_raise( p_e, "no enough memory" );
1250         return NULL;
1251     }
1252     p_actual = p_track_description;
1253     p_previous = NULL;
1254     for( int i = 0; i < val_list.p_list->i_count; i++ )
1255     {
1256         if( !p_actual )
1257         {
1258             p_actual = ( libvlc_track_description_t * )
1259                 malloc( sizeof( libvlc_track_description_t ) );
1260             if ( !p_actual )
1261             {
1262                 libvlc_track_description_release( p_track_description );
1263                 var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1264                             &val_list, &text_list);
1265                 vlc_object_release( p_input );
1266                 libvlc_exception_raise( p_e, "no enough memory" );
1267                 return NULL;
1268             }
1269         }
1270         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1271         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1272         p_actual->p_next = NULL;
1273         if( p_previous )
1274             p_previous->p_next = p_actual;
1275         p_previous = p_actual;
1276         p_actual =  NULL;
1277     }
1278     var_Change( p_input, psz_variable, VLC_VAR_FREELIST, &val_list, &text_list);
1279     vlc_object_release( p_input );
1280
1281     return p_track_description;
1282 }
1283
1284 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1285 {
1286     libvlc_track_description_t *p_actual, *p_before;
1287     p_actual = p_td;
1288
1289     while ( p_actual )
1290     {
1291         free( p_actual->psz_name );
1292         p_before = p_actual;
1293         p_actual = p_before->p_next;
1294         free( p_before );
1295     }
1296 }
1297
1298 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi,
1299                                      libvlc_exception_t *p_e )
1300 {
1301     input_thread_t *p_input_thread;
1302     vlc_value_t val;
1303
1304     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1305     if ( !p_input_thread )
1306     {
1307         /* We do return the right value, no need to throw an exception */
1308         if( libvlc_exception_raised( p_e ) )
1309             libvlc_exception_clear( p_e );
1310         return false;
1311     }
1312     var_Get( p_input_thread, "can-pause", &val );
1313     vlc_object_release( p_input_thread );
1314
1315     return val.b_bool;
1316 }