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 #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  * Create a Media Instance object.
 246  *
 247  * Refcount strategy:
 248  * - All items created by _new start with a refcount set to 1.
 249  * - Accessor _release decrease the refcount by 1, if after that
 250  *   operation the refcount is 0, the object is destroyed.
 251  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 252  *
 253  * Object locking strategy:
 254  * - No lock held while in constructor.
 255  * - When accessing any member variable this lock is held. (XXX who locks?)
 256  * - When attempting to destroy the object the lock is also held.
 257  **************************************************************************/
 258 libvlc_media_player_t *
 259 libvlc_media_player_new( libvlc_instance_t * p_libvlc_instance,
 260                            libvlc_exception_t * p_e )
 261 {
 262     libvlc_media_player_t * p_mi;
 263
 264     if( !p_libvlc_instance )
 265     {
 266         libvlc_exception_raise( p_e, "invalid libvlc instance" );
 267         return NULL;
 268     }
 269
 270     p_mi = malloc( sizeof(libvlc_media_player_t) );
 271     if( !p_mi )
 272     {
 273         libvlc_exception_raise( p_e, "Not enough memory" );
 274         return NULL;
 275     }
 276     p_mi->p_md = NULL;
 277     p_mi->drawable.agl = 0;
 278     p_mi->drawable.xid = 0;
 279     p_mi->drawable.hwnd = NULL;
 280     p_mi->p_libvlc_instance = p_libvlc_instance;
 281     p_mi->p_input_thread = NULL;
 282     p_mi->i_refcount = 1;
 283     p_mi->b_own_its_input_thread = true;
 284     vlc_mutex_init( &p_mi->object_lock );
 285     p_mi->p_event_manager = libvlc_event_manager_new( p_mi,
 286             p_libvlc_instance, p_e );
 287     if( libvlc_exception_raised( p_e ) )
 288     {
 289         vlc_mutex_destroy( &p_mi->object_lock );
 290         free( p_mi );
 291         return NULL;
 292     }
 293
 294     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 295             libvlc_MediaPlayerNothingSpecial, p_e );
 296     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 297             libvlc_MediaPlayerOpening, p_e );
 298     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 299             libvlc_MediaPlayerBuffering, p_e );
 300     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 301             libvlc_MediaPlayerPlaying, p_e );
 302     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 303             libvlc_MediaPlayerPaused, p_e );
 304     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 305             libvlc_MediaPlayerStopped, p_e );
 306     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 307             libvlc_MediaPlayerForward, p_e );
 308     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 309             libvlc_MediaPlayerBackward, p_e );
 310     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 311             libvlc_MediaPlayerEndReached, p_e );
 312     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 313             libvlc_MediaPlayerEncounteredError, p_e );
 314
 315     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 316             libvlc_MediaPlayerPositionChanged, p_e );
 317     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 318             libvlc_MediaPlayerTimeChanged, p_e );
 319     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 320             libvlc_MediaPlayerTitleChanged, p_e );
 321     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 322             libvlc_MediaPlayerSeekableChanged, p_e );
 323     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 324             libvlc_MediaPlayerPausableChanged, p_e );
 325
 326     /* Snapshot initialization */
 327     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 328            libvlc_MediaPlayerSnapshotTaken, p_e );
 329     /* Attach a var callback to the global object to provide the glue between
 330         vout_thread that generates the event and media_player that re-emits it
 331         with its own event manager
 332     */
 333     var_Create( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 334                 VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 335     var_AddCallback( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 336                      SnapshotTakenCallback, p_mi );
 337
 338     return p_mi;
 339 }
 340
 341 /**************************************************************************
 342  * Create a Media Instance object with a media descriptor.
 343  **************************************************************************/
 344 libvlc_media_player_t *
 345 libvlc_media_player_new_from_media(
 346                                     libvlc_media_t * p_md,
 347                                     libvlc_exception_t *p_e )
 348 {
 349     libvlc_media_player_t * p_mi;
 350     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance, p_e );
 351
 352     if( !p_mi )
 353         return NULL;
 354
 355     libvlc_media_retain( p_md );
 356     p_mi->p_md = p_md;
 357
 358     return p_mi;
 359 }
 360
 361 /**************************************************************************
 362  * Create a new media instance object from an input_thread (Libvlc Internal).
 363  **************************************************************************/
 364 libvlc_media_player_t * libvlc_media_player_new_from_input_thread(
 365                                    struct libvlc_instance_t *p_libvlc_instance,
 366                                    input_thread_t *p_input,
 367                                    libvlc_exception_t *p_e )
 368 {
 369     libvlc_media_player_t * p_mi;
 370
 371     if( !p_input )
 372     {
 373         libvlc_exception_raise( p_e, "invalid input thread" );
 374         return NULL;
 375     }
 376
 377     p_mi = libvlc_media_player_new( p_libvlc_instance, p_e );
 378
 379     if( !p_mi )
 380         return NULL;
 381
 382     p_mi->p_md = libvlc_media_new_from_input_item(
 383                     p_libvlc_instance,
 384                     input_GetItem( p_input ), p_e );
 385
 386     if( !p_mi->p_md )
 387     {
 388         libvlc_media_player_destroy( p_mi );
 389         return NULL;
 390     }
 391
 392     /* will be released in media_player_release() */
 393     vlc_object_hold( p_input );
 394
 395     p_mi->p_input_thread = p_input;
 396     p_mi->b_own_its_input_thread = false;
 397
 398     return p_mi;
 399 }
 400
 401 /**************************************************************************
 402  * Destroy a Media Instance object (libvlc internal)
 403  *
 404  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 405  **************************************************************************/
 406 void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 407 {
 408     input_thread_t *p_input_thread;
 409     libvlc_exception_t p_e;
 410
 411     libvlc_exception_init( &p_e );
 412
 413     if( !p_mi )
 414         return;
 415
 416         /* Detach Callback from the main libvlc object */
 417     var_DelCallback( p_mi->p_libvlc_instance->p_libvlc_int,
 418                      "vout-snapshottaken", SnapshotTakenCallback, p_mi );
 419
 420     p_input_thread = libvlc_get_input_thread( p_mi, &p_e );
 421
 422     if( libvlc_exception_raised( &p_e ) )
 423     {
 424         libvlc_event_manager_release( p_mi->p_event_manager );
 425         libvlc_exception_clear( &p_e );
 426         free( p_mi );
 427         return; /* no need to worry about no input thread */
 428     }
 429     vlc_mutex_destroy( &p_mi->object_lock );
 430
 431     vlc_object_release( p_input_thread );
 432
 433     libvlc_media_release( p_mi->p_md );
 434
 435     free( p_mi );
 436 }
 437
 438 /**************************************************************************
 439  * Release a Media Instance object.
 440  *
 441  * Function does the locking.
 442  **************************************************************************/
 443 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 444 {
 445     if( !p_mi )
 446         return;
 447
 448     vlc_mutex_lock( &p_mi->object_lock );
 449
 450     p_mi->i_refcount--;
 451
 452     if( p_mi->i_refcount > 0 )
 453     {
 454         vlc_mutex_unlock( &p_mi->object_lock );
 455         return;
 456     }
 457     vlc_mutex_unlock( &p_mi->object_lock );
 458     vlc_mutex_destroy( &p_mi->object_lock );
 459
 460     release_input_thread( p_mi, true );
 461
 462     libvlc_event_manager_release( p_mi->p_event_manager );
 463
 464     libvlc_media_release( p_mi->p_md );
 465
 466     free( p_mi );
 467 }
 468
 469 /**************************************************************************
 470  * Retain a Media Instance object.
 471  *
 472  * Caller must hold the lock.
 473  **************************************************************************/
 474 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 475 {
 476     if( !p_mi )
 477         return;
 478
 479     p_mi->i_refcount++;
 480 }
 481
 482 /**************************************************************************
 483  * Set the Media descriptor associated with the instance.
 484  *
 485  * Enter without lock -- function will lock the object.
 486  **************************************************************************/
 487 void libvlc_media_player_set_media(
 488                             libvlc_media_player_t *p_mi,
 489                             libvlc_media_t *p_md,
 490                             libvlc_exception_t *p_e )
 491 {
 492     VLC_UNUSED(p_e);
 493
 494     if( !p_mi )
 495         return;
 496
 497     vlc_mutex_lock( &p_mi->object_lock );
 498
 499     /* FIXME I am not sure if it is a user request or on die(eof/error)
 500      * request here */
 501     release_input_thread( p_mi,
 502                           p_mi->p_input_thread &&
 503                           !p_mi->p_input_thread->b_eof &&
 504                           !p_mi->p_input_thread->b_error );
 505
 506     if( p_mi->p_md )
 507         libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, p_e );
 508
 509     libvlc_media_release( p_mi->p_md );
 510
 511     if( !p_md )
 512     {
 513         p_mi->p_md = NULL;
 514         vlc_mutex_unlock( &p_mi->object_lock );
 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     vlc_mutex_unlock( &p_mi->object_lock );
 526 }
 527
 528 /**************************************************************************
 529  * Get the Media descriptor associated with the instance.
 530  **************************************************************************/
 531 libvlc_media_t *
 532 libvlc_media_player_get_media(
 533                             libvlc_media_player_t *p_mi,
 534                             libvlc_exception_t *p_e )
 535 {
 536     VLC_UNUSED(p_e);
 537
 538     if( !p_mi->p_md )
 539         return NULL;
 540
 541     libvlc_media_retain( p_mi->p_md );
 542     return p_mi->p_md;
 543 }
 544
 545 /**************************************************************************
 546  * Get the event Manager.
 547  **************************************************************************/
 548 libvlc_event_manager_t *
 549 libvlc_media_player_event_manager(
 550                             libvlc_media_player_t *p_mi,
 551                             libvlc_exception_t *p_e )
 552 {
 553     VLC_UNUSED(p_e);
 554
 555     return p_mi->p_event_manager;
 556 }
 557
 558 /**************************************************************************
 559  * Trigger a snapshot Taken Event.
 560  *************************************************************************/
 561 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
 562                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 563 {
 564     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
 565     VLC_UNUSED(p_this) ;
 566
 567     libvlc_media_player_t* p_mi = (libvlc_media_player_t*) p_data ;
 568     libvlc_event_t event ;
 569     event.type = libvlc_MediaPlayerSnapshotTaken ;
 570     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string ;
 571     /* Snapshot psz data is a vlc_variable owned by libvlc object .
 572          Its memmory management is taken care by the obj*/
 573     msg_Dbg( p_this, "about to emit libvlc_snapshot_taken.make psz_str=0x%p"
 574              " (%s)", event.u.media_player_snapshot_taken.psz_filename,
 575              event.u.media_player_snapshot_taken.psz_filename );
 576     libvlc_event_send( p_mi->p_event_manager, &event );
 577
 578     return VLC_SUCCESS;
 579 }
 580
 581 /**************************************************************************
 582  * Tell media player to start playing.
 583  **************************************************************************/
 584 void libvlc_media_player_play( libvlc_media_player_t *p_mi,
 585                                  libvlc_exception_t *p_e )
 586 {
 587     input_thread_t * p_input_thread;
 588
 589     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 590     {
 591         /* A thread already exists, send it a play message */
 592         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 593         vlc_object_release( p_input_thread );
 594         return;
 595     }
 596
 597     /* Ignore previous exception */
 598     libvlc_exception_clear( p_e );
 599
 600     vlc_mutex_lock( &p_mi->object_lock );
 601
 602     if( !p_mi->p_md )
 603     {
 604         libvlc_exception_raise( p_e, "no associated media descriptor" );
 605         vlc_mutex_unlock( &p_mi->object_lock );
 606         return;
 607     }
 608
 609     p_mi->p_input_thread = input_CreateThread(
 610             p_mi->p_libvlc_instance->p_libvlc_int, p_mi->p_md->p_input_item );
 611
 612     if( !p_mi->p_input_thread )
 613     {
 614         vlc_mutex_unlock( &p_mi->object_lock );
 615         return;
 616     }
 617
 618     p_input_thread = p_mi->p_input_thread;
 619
 620     var_Create( p_input_thread, "drawable-agl", VLC_VAR_INTEGER );
 621     if( p_mi->drawable.agl )
 622         var_SetInteger( p_input_thread, "drawable-agl", p_mi->drawable.agl );
 623
 624     var_Create( p_input_thread, "drawable-xid", VLC_VAR_INTEGER );
 625     if( p_mi->drawable.xid )
 626         var_SetInteger( p_input_thread, "drawable-xid", p_mi->drawable.xid );
 627
 628     var_Create( p_input_thread, "drawable-hwnd", VLC_VAR_ADDRESS );
 629     if( p_mi->drawable.hwnd != NULL )
 630     {
 631         vlc_value_t val = { .p_address = p_mi->drawable.hwnd };
 632         var_Set( p_input_thread, "drawable-hwnd", val );
 633     }
 634
 635         var_Create( p_input_thread, "drawable-nsobject", VLC_VAR_ADDRESS );
 636     if( p_mi->drawable.nsobject != NULL )
 637     {
 638         vlc_value_t val = { .p_address = p_mi->drawable.nsobject };
 639         var_Set( p_input_thread, "drawable-nsobject", val );
 640     }
 641
 642     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 643     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 644     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 645
 646     vlc_mutex_unlock( &p_mi->object_lock );
 647 }
 648
 649 /**************************************************************************
 650  * Pause.
 651  **************************************************************************/
 652 void libvlc_media_player_pause( libvlc_media_player_t *p_mi,
 653                                   libvlc_exception_t *p_e )
 654 {
 655     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 656     if( !p_input_thread )
 657         return;
 658
 659     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 660     if( state == libvlc_Playing || state == libvlc_Buffering )
 661     {
 662         if( libvlc_media_player_can_pause( p_mi, p_e ) )
 663             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 664         else
 665             libvlc_media_player_stop( p_mi, p_e );
 666     }
 667     else
 668         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 669
 670     vlc_object_release( p_input_thread );
 671 }
 672
 673 /**************************************************************************
 674  * Tells whether the media player is currently playing.
 675  *
 676  * Enter with lock held.
 677  **************************************************************************/
 678 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi,
 679                                      libvlc_exception_t *p_e )
 680 {
 681     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 682     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 683 }
 684
 685 /**************************************************************************
 686  * Stop playing.
 687  **************************************************************************/
 688 void libvlc_media_player_stop( libvlc_media_player_t *p_mi,
 689                                  libvlc_exception_t *p_e )
 690 {
 691     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 692
 693     if( state == libvlc_Playing ||
 694         state == libvlc_Paused ||
 695         state == libvlc_Buffering )
 696     {
 697         /* Send a stop notification event only if we are in playing,
 698          * buffering or paused states */
 699         libvlc_media_set_state( p_mi->p_md, libvlc_Ended, p_e );
 700
 701         /* Construct and send the event */
 702         libvlc_event_t event;
 703         event.type = libvlc_MediaPlayerStopped;
 704         libvlc_event_send( p_mi->p_event_manager, &event );
 705     }
 706
 707     if( p_mi->b_own_its_input_thread )
 708     {
 709         vlc_mutex_lock( &p_mi->object_lock );
 710         release_input_thread( p_mi, true ); /* This will stop the input thread */
 711         vlc_mutex_unlock( &p_mi->object_lock );
 712     }
 713     else
 714     {
 715         input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 716
 717         if( !p_input_thread )
 718             return;
 719
 720         input_StopThread( p_input_thread, true );
 721         vlc_object_release( p_input_thread );
 722         p_mi->p_input_thread = NULL;
 723     }
 724 }
 725
 726 /**************************************************************************
 727  * set_nsobject
 728  **************************************************************************/
 729 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 730                                                                  void * drawable,
 731                                                                  libvlc_exception_t *p_e )
 732 {
 733     (void) p_e;
 734     p_mi->drawable.nsobject = drawable;
 735 }
 736
 737 /**************************************************************************
 738  * get_nsobject
 739  **************************************************************************/
 740 uint32_t libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 741 {
 742     return p_mi->drawable.nsobject;
 743 }
 744
 745 /**************************************************************************
 746  * set_agl
 747  **************************************************************************/
 748 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 749                                       uint32_t drawable,
 750                                       libvlc_exception_t *p_e )
 751 {
 752     (void) p_e;
 753     p_mi->drawable.agl = drawable;
 754 }
 755
 756 /**************************************************************************
 757  * get_agl
 758  **************************************************************************/
 759 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 760 {
 761     return p_mi->drawable.agl;
 762 }
 763
 764 /**************************************************************************
 765  * set_xwindow
 766  **************************************************************************/
 767 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 768                                       uint32_t drawable,
 769                                       libvlc_exception_t *p_e )
 770 {
 771     (void) p_e;
 772     p_mi->drawable.xid = drawable;
 773 }
 774
 775 /**************************************************************************
 776  * get_xwindow
 777  **************************************************************************/
 778 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 779 {
 780     return p_mi->drawable.xid;
 781 }
 782
 783 /**************************************************************************
 784  * set_hwnd
 785  **************************************************************************/
 786 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 787                                    void *drawable,
 788                                    libvlc_exception_t *p_e )
 789 {
 790     (void) p_e;
 791     p_mi->drawable.hwnd = drawable;
 792 }
 793
 794 /**************************************************************************
 795  * get_hwnd
 796  **************************************************************************/
 797 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 798 {
 799     return p_mi->drawable.hwnd;
 800 }
 801
 802 /**************************************************************************
 803  * Set Drawable
 804  **************************************************************************/
 805 void libvlc_media_player_set_drawable( libvlc_media_player_t *p_mi,
 806                                        libvlc_drawable_t drawable,
 807                                        libvlc_exception_t *p_e )
 808 {
 809 #ifdef WIN32
 810     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 811         p_mi->drawable.hwnd = (HWND)drawable;
 812     else
 813         libvlc_exception_raise(p_e, "Operation not supported");
 814 #elif defined(__APPLE__)
 815     p_mi->drawable.agl = drawable;
 816     (void) p_e;
 817 #else
 818     p_mi->drawable.xid = drawable;
 819     (void) p_e;
 820 #endif
 821 }
 822
 823 /**************************************************************************
 824  * Get Drawable
 825  **************************************************************************/
 826 libvlc_drawable_t
 827 libvlc_media_player_get_drawable ( libvlc_media_player_t *p_mi,
 828                                    libvlc_exception_t *p_e )
 829 {
 830     VLC_UNUSED(p_e);
 831
 832 #ifdef WIN32
 833     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 834         return (libvlc_drawable_t)p_mi->drawable.hwnd;
 835     else
 836         return 0;
 837 #elif defined(__APPLE__)
 838     return p_mi->drawable.agl;
 839 #else
 840     return p_mi->drawable.xid;
 841 #endif
 842 }
 843
 844 /**************************************************************************
 845  * Getters for stream information
 846  **************************************************************************/
 847 libvlc_time_t libvlc_media_player_get_length(
 848                              libvlc_media_player_t *p_mi,
 849                              libvlc_exception_t *p_e )
 850 {
 851     input_thread_t *p_input_thread;
 852     vlc_value_t val;
 853
 854     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 855     if( !p_input_thread )
 856         return -1;
 857
 858     var_Get( p_input_thread, "length", &val );
 859     vlc_object_release( p_input_thread );
 860
 861     return (val.i_time+500LL)/1000LL;
 862 }
 863
 864 libvlc_time_t libvlc_media_player_get_time(
 865                                    libvlc_media_player_t *p_mi,
 866                                    libvlc_exception_t *p_e )
 867 {
 868     input_thread_t *p_input_thread;
 869     vlc_value_t val;
 870
 871     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 872     if( !p_input_thread )
 873         return -1;
 874
 875     var_Get( p_input_thread , "time", &val );
 876     vlc_object_release( p_input_thread );
 877     return (val.i_time+500LL)/1000LL;
 878 }
 879
 880 void libvlc_media_player_set_time(
 881                                  libvlc_media_player_t *p_mi,
 882                                  libvlc_time_t time,
 883                                  libvlc_exception_t *p_e )
 884 {
 885     input_thread_t *p_input_thread;
 886
 887     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 888     if( !p_input_thread )
 889         return;
 890
 891     var_SetTime( p_input_thread, "time", time*1000LL );
 892     vlc_object_release( p_input_thread );
 893 }
 894
 895 void libvlc_media_player_set_position(
 896                                 libvlc_media_player_t *p_mi,
 897                                 float position,
 898                                 libvlc_exception_t *p_e )
 899 {
 900     input_thread_t *p_input_thread;
 901
 902     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 903     if( !p_input_thread )
 904         return;
 905
 906     var_SetFloat( p_input_thread, "position", position );
 907     vlc_object_release( p_input_thread );
 908 }
 909
 910 float libvlc_media_player_get_position(
 911                                  libvlc_media_player_t *p_mi,
 912                                  libvlc_exception_t *p_e )
 913 {
 914     input_thread_t *p_input_thread;
 915     vlc_value_t val;
 916
 917     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 918     if( !p_input_thread )
 919         return -1.0;
 920
 921     var_Get( p_input_thread, "position", &val );
 922     vlc_object_release( p_input_thread );
 923
 924     return val.f_float;
 925 }
 926
 927 void libvlc_media_player_set_chapter(
 928                                  libvlc_media_player_t *p_mi,
 929                                  int chapter,
 930                                  libvlc_exception_t *p_e )
 931 {
 932     input_thread_t *p_input_thread;
 933
 934     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 935     if( !p_input_thread )
 936         return;
 937
 938     var_SetInteger( p_input_thread, "chapter", chapter );
 939     vlc_object_release( p_input_thread );
 940 }
 941
 942 int libvlc_media_player_get_chapter(
 943                                  libvlc_media_player_t *p_mi,
 944                                  libvlc_exception_t *p_e )
 945 {
 946     input_thread_t *p_input_thread;
 947     vlc_value_t val;
 948
 949     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 950     if( !p_input_thread )
 951         return -1;
 952
 953     var_Get( p_input_thread, "chapter", &val );
 954     vlc_object_release( p_input_thread );
 955
 956     return val.i_int;
 957 }
 958
 959 int libvlc_media_player_get_chapter_count(
 960                                  libvlc_media_player_t *p_mi,
 961                                  libvlc_exception_t *p_e )
 962 {
 963     input_thread_t *p_input_thread;
 964     vlc_value_t val;
 965
 966     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 967     if( !p_input_thread )
 968         return -1;
 969
 970     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 971     vlc_object_release( p_input_thread );
 972
 973     return val.i_int;
 974 }
 975
 976 int libvlc_media_player_get_chapter_count_for_title(
 977                                  libvlc_media_player_t *p_mi,
 978                                  int i_title,
 979                                  libvlc_exception_t *p_e )
 980 {
 981     input_thread_t *p_input_thread;
 982     vlc_value_t val;
 983
 984     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 985     if( !p_input_thread )
 986         return -1;
 987
 988     char *psz_name;
 989     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 990     {
 991         vlc_object_release( p_input_thread );
 992         return -1;
 993     }
 994     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 995     vlc_object_release( p_input_thread );
 996     free( psz_name );
 997
 998     return val.i_int;
 999 }
1000
1001 void libvlc_media_player_set_title(
1002                                  libvlc_media_player_t *p_mi,
1003                                  int i_title,
1004                                  libvlc_exception_t *p_e )
1005 {
1006     input_thread_t *p_input_thread;
1007
1008     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1009     if( !p_input_thread )
1010         return;
1011
1012     var_SetInteger( p_input_thread, "title", i_title );
1013     vlc_object_release( p_input_thread );
1014
1015     //send event
1016     libvlc_event_t event;
1017     event.type = libvlc_MediaPlayerTitleChanged;
1018     event.u.media_player_title_changed.new_title = i_title;
1019     libvlc_event_send( p_mi->p_event_manager, &event );
1020 }
1021
1022 int libvlc_media_player_get_title(
1023                                  libvlc_media_player_t *p_mi,
1024                                  libvlc_exception_t *p_e )
1025 {
1026     input_thread_t *p_input_thread;
1027     vlc_value_t val;
1028
1029     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1030     if( !p_input_thread )
1031         return -1;
1032
1033     var_Get( p_input_thread, "title", &val );
1034     vlc_object_release( p_input_thread );
1035
1036     return val.i_int;
1037 }
1038
1039 int libvlc_media_player_get_title_count(
1040                                  libvlc_media_player_t *p_mi,
1041                                  libvlc_exception_t *p_e )
1042 {
1043     input_thread_t *p_input_thread;
1044     vlc_value_t val;
1045
1046     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1047     if( !p_input_thread )
1048         return -1;
1049
1050     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1051     vlc_object_release( p_input_thread );
1052
1053     return val.i_int;
1054 }
1055
1056 void libvlc_media_player_next_chapter(
1057                                  libvlc_media_player_t *p_mi,
1058                                  libvlc_exception_t *p_e )
1059 {
1060     input_thread_t *p_input_thread;
1061
1062     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1063     if( !p_input_thread )
1064         return;
1065
1066     int i_type = var_Type( p_input_thread, "next-chapter" );
1067     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1068                             "next-chapter":"next-title", true );
1069
1070     vlc_object_release( p_input_thread );
1071 }
1072
1073 void libvlc_media_player_previous_chapter(
1074                                  libvlc_media_player_t *p_mi,
1075                                  libvlc_exception_t *p_e )
1076 {
1077     input_thread_t *p_input_thread;
1078
1079     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1080     if( !p_input_thread )
1081         return;
1082
1083     int i_type = var_Type( p_input_thread, "next-chapter" );
1084     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1085                             "prev-chapter":"prev-title", true );
1086
1087     vlc_object_release( p_input_thread );
1088 }
1089
1090 float libvlc_media_player_get_fps(
1091                                  libvlc_media_player_t *p_mi,
1092                                  libvlc_exception_t *p_e)
1093 {
1094     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1095     double f_fps = 0.0;
1096
1097     if( p_input_thread )
1098     {
1099         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1100             f_fps = 0.0;
1101         vlc_object_release( p_input_thread );
1102     }
1103     return f_fps;
1104 }
1105
1106 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi,
1107                                      libvlc_exception_t *p_e)
1108 {
1109     input_thread_t *p_input_thread =
1110                             libvlc_get_input_thread ( p_mi, p_e);
1111     if ( !p_input_thread )
1112         return false;
1113
1114     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
1115     {
1116         vlc_object_release( p_input_thread );
1117         return true;
1118     }
1119     vlc_object_release( p_input_thread );
1120     return false;
1121 }
1122
1123 void libvlc_media_player_set_rate(
1124                                  libvlc_media_player_t *p_mi,
1125                                  float rate,
1126                                  libvlc_exception_t *p_e )
1127 {
1128     input_thread_t *p_input_thread;
1129     bool b_can_rewind;
1130
1131     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1132     if( !p_input_thread )
1133         return;
1134
1135     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1136     if( (rate < 0.0) && !b_can_rewind )
1137     {
1138         vlc_object_release( p_input_thread );
1139         libvlc_exception_raise( p_e, "Rate value is invalid" );
1140         return;
1141     }
1142
1143     var_SetInteger( p_input_thread, "rate", 1000.0f/rate );
1144     vlc_object_release( p_input_thread );
1145 }
1146
1147 float libvlc_media_player_get_rate(
1148                                  libvlc_media_player_t *p_mi,
1149                                  libvlc_exception_t *p_e )
1150 {
1151     input_thread_t *p_input_thread;
1152     vlc_value_t val;
1153     bool b_can_rewind;
1154
1155     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1156     if( !p_input_thread )
1157         return 0.0;  /* rate < 0 indicates rewind */
1158
1159     var_Get( p_input_thread, "rate", &val );
1160     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1161     if( (val.i_int < 0) && !b_can_rewind )
1162     {
1163         libvlc_exception_raise( p_e, "invalid rate" );
1164         return 0.0;
1165     }
1166     vlc_object_release( p_input_thread );
1167
1168     return (float)1000.0f/val.i_int;
1169 }
1170
1171 libvlc_state_t libvlc_media_player_get_state(
1172                                  libvlc_media_player_t *p_mi,
1173                                  libvlc_exception_t *p_e )
1174 {
1175     input_thread_t *p_input_thread;
1176     libvlc_state_t state = libvlc_Ended;
1177     vlc_value_t val;
1178
1179     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1180     if( !p_input_thread )
1181     {
1182         /* We do return the right value, no need to throw an exception */
1183         if( libvlc_exception_raised( p_e ) )
1184             libvlc_exception_clear( p_e );
1185         return state;
1186     }
1187
1188     var_Get( p_input_thread, "state", &val );
1189     state = vlc_to_libvlc_state(val.i_int);
1190
1191     if( state == libvlc_Playing )
1192     {
1193         float caching;
1194         caching = var_GetFloat( p_input_thread, "cache" );
1195         if( caching > 0.0 && caching < 1.0 )
1196             state = libvlc_Buffering;
1197     }
1198     vlc_object_release( p_input_thread );
1199     return state;
1200 }
1201
1202 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi,
1203                                        libvlc_exception_t *p_e )
1204 {
1205     input_thread_t *p_input_thread;
1206     vlc_value_t val;
1207
1208     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1209     if ( !p_input_thread )
1210     {
1211         /* We do return the right value, no need to throw an exception */
1212         if( libvlc_exception_raised( p_e ) )
1213             libvlc_exception_clear( p_e );
1214         return false;
1215     }
1216     var_Get( p_input_thread, "can-seek", &val );
1217     vlc_object_release( p_input_thread );
1218
1219     return val.b_bool;
1220 }
1221
1222 /* internal function, used by audio, video */
1223 libvlc_track_description_t *
1224         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1225                                       const char *psz_variable,
1226                                       libvlc_exception_t *p_e )
1227 {
1228     input_thread_t *p_input = libvlc_get_input_thread( p_mi, p_e );
1229
1230     if( !p_input )
1231         return NULL;
1232
1233     vlc_value_t val_list, text_list;
1234     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1235
1236     if( val_list.p_list->i_count <= 0 ) /* no tracks */
1237         return NULL;
1238
1239     libvlc_track_description_t *p_track_description, *p_actual, *p_previous;
1240     p_track_description = ( libvlc_track_description_t * )
1241         malloc( sizeof( libvlc_track_description_t ) );
1242     if ( !p_track_description )
1243     {
1244         var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1245                     &val_list, &text_list);
1246         vlc_object_release( p_input );
1247         libvlc_exception_raise( p_e, "no enough memory" );
1248         return NULL;
1249     }
1250     p_actual = p_track_description;
1251     p_previous = NULL;
1252     for( int i = 0; i < val_list.p_list->i_count; i++ )
1253     {
1254         if( !p_actual )
1255         {
1256             p_actual = ( libvlc_track_description_t * )
1257                 malloc( sizeof( libvlc_track_description_t ) );
1258             if ( !p_actual )
1259             {
1260                 libvlc_track_description_release( p_track_description );
1261                 var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1262                             &val_list, &text_list);
1263                 vlc_object_release( p_input );
1264                 libvlc_exception_raise( p_e, "no enough memory" );
1265                 return NULL;
1266             }
1267         }
1268         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1269         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1270         p_actual->p_next = NULL;
1271         if( p_previous )
1272             p_previous->p_next = p_actual;
1273         p_previous = p_actual;
1274         p_actual =  NULL;
1275     }
1276     var_Change( p_input, psz_variable, VLC_VAR_FREELIST, &val_list, &text_list);
1277     vlc_object_release( p_input );
1278
1279     return p_track_description;
1280 }
1281
1282 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1283 {
1284     libvlc_track_description_t *p_actual, *p_before;
1285     p_actual = p_td;
1286
1287     while ( p_actual )
1288     {
1289         free( p_actual->psz_name );
1290         p_before = p_actual;
1291         p_actual = p_before->p_next;
1292         free( p_before );
1293     }
1294 }
1295
1296 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi,
1297                                      libvlc_exception_t *p_e )
1298 {
1299     input_thread_t *p_input_thread;
1300     vlc_value_t val;
1301
1302     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1303     if ( !p_input_thread )
1304     {
1305         /* We do return the right value, no need to throw an exception */
1306         if( libvlc_exception_raised( p_e ) )
1307             libvlc_exception_clear( p_e );
1308         return false;
1309     }
1310     var_Get( p_input_thread, "can-pause", &val );
1311     vlc_object_release( p_input_thread );
1312
1313     return val.b_bool;
1314 }