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_Stop( 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_POSITION )
 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
 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
 352     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance, p_e );
 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     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     if( !p_mi->p_md )
 386     {
 387         libvlc_media_player_destroy( p_mi );
 388         return NULL;
 389     }
 390
 391     /* will be released in media_player_release() */
 392     vlc_object_hold( p_input );
 393
 394     p_mi->p_input_thread = p_input;
 395     p_mi->b_own_its_input_thread = false;
 396
 397     return p_mi;
 398 }
 399
 400 /**************************************************************************
 401  * Destroy a Media Instance object (libvlc internal)
 402  *
 403  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 404  **************************************************************************/
 405 void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 406 {
 407     input_thread_t *p_input_thread;
 408     libvlc_exception_t p_e;
 409
 410     if( !p_mi )
 411         return;
 412
 413     libvlc_exception_init( &p_e );
 414
 415         /* Detach Callback from the main libvlc object */
 416     var_DelCallback( p_mi->p_libvlc_instance->p_libvlc_int,
 417                      "vout-snapshottaken", SnapshotTakenCallback, p_mi );
 418
 419     p_input_thread = libvlc_get_input_thread( p_mi, &p_e );
 420
 421     if( libvlc_exception_raised( &p_e ) )
 422     {
 423         libvlc_event_manager_release( p_mi->p_event_manager );
 424         libvlc_exception_clear( &p_e );
 425         free( p_mi );
 426         return; /* no need to worry about no input thread */
 427     }
 428     vlc_mutex_destroy( &p_mi->object_lock );
 429
 430     vlc_object_release( p_input_thread );
 431
 432     libvlc_media_release( p_mi->p_md );
 433
 434     free( p_mi );
 435 }
 436
 437 /**************************************************************************
 438  * Release a Media Instance object.
 439  *
 440  * Function does the locking.
 441  **************************************************************************/
 442 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 443 {
 444     if( !p_mi )
 445         return;
 446
 447     vlc_mutex_lock( &p_mi->object_lock );
 448
 449     p_mi->i_refcount--;
 450
 451     if( p_mi->i_refcount > 0 )
 452     {
 453         vlc_mutex_unlock( &p_mi->object_lock );
 454         return;
 455     }
 456     vlc_mutex_unlock( &p_mi->object_lock );
 457     vlc_mutex_destroy( &p_mi->object_lock );
 458
 459     release_input_thread( p_mi, true );
 460
 461     libvlc_event_manager_release( p_mi->p_event_manager );
 462
 463     libvlc_media_release( p_mi->p_md );
 464
 465     free( p_mi );
 466 }
 467
 468 /**************************************************************************
 469  * Retain a Media Instance object.
 470  *
 471  * Caller must hold the lock.
 472  **************************************************************************/
 473 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 474 {
 475     if( !p_mi )
 476         return;
 477
 478     p_mi->i_refcount++;
 479 }
 480
 481 /**************************************************************************
 482  * Set the Media descriptor associated with the instance.
 483  *
 484  * Enter without lock -- function will lock the object.
 485  **************************************************************************/
 486 void libvlc_media_player_set_media(
 487                             libvlc_media_player_t *p_mi,
 488                             libvlc_media_t *p_md,
 489                             libvlc_exception_t *p_e )
 490 {
 491     VLC_UNUSED(p_e);
 492
 493     if( !p_mi )
 494         return;
 495
 496     vlc_mutex_lock( &p_mi->object_lock );
 497
 498     /* FIXME I am not sure if it is a user request or on die(eof/error)
 499      * request here */
 500     release_input_thread( p_mi,
 501                           p_mi->p_input_thread &&
 502                           !p_mi->p_input_thread->b_eof &&
 503                           !p_mi->p_input_thread->b_error );
 504
 505     if( p_mi->p_md )
 506         libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, p_e );
 507
 508     libvlc_media_release( p_mi->p_md );
 509
 510     if( !p_md )
 511     {
 512         p_mi->p_md = NULL;
 513         vlc_mutex_unlock( &p_mi->object_lock );
 514         return; /* It is ok to pass a NULL md */
 515     }
 516
 517     libvlc_media_retain( p_md );
 518     p_mi->p_md = p_md;
 519
 520     /* The policy here is to ignore that we were created using a different
 521      * libvlc_instance, because we don't really care */
 522     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 523
 524     vlc_mutex_unlock( &p_mi->object_lock );
 525 }
 526
 527 /**************************************************************************
 528  * Get the Media descriptor associated with the instance.
 529  **************************************************************************/
 530 libvlc_media_t *
 531 libvlc_media_player_get_media(
 532                             libvlc_media_player_t *p_mi,
 533                             libvlc_exception_t *p_e )
 534 {
 535     VLC_UNUSED(p_e);
 536
 537     if( !p_mi->p_md )
 538         return NULL;
 539
 540     libvlc_media_retain( p_mi->p_md );
 541     return p_mi->p_md;
 542 }
 543
 544 /**************************************************************************
 545  * Get the event Manager.
 546  **************************************************************************/
 547 libvlc_event_manager_t *
 548 libvlc_media_player_event_manager(
 549                             libvlc_media_player_t *p_mi,
 550                             libvlc_exception_t *p_e )
 551 {
 552     VLC_UNUSED(p_e);
 553
 554     return p_mi->p_event_manager;
 555 }
 556
 557 /**************************************************************************
 558  * Trigger a snapshot Taken Event.
 559  *************************************************************************/
 560 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
 561                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 562 {
 563     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
 564     VLC_UNUSED(p_this) ;
 565
 566     libvlc_media_player_t* p_mi = (libvlc_media_player_t*) p_data ;
 567     libvlc_event_t event ;
 568     event.type = libvlc_MediaPlayerSnapshotTaken ;
 569     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string ;
 570     /* Snapshot psz data is a vlc_variable owned by libvlc object .
 571          Its memmory management is taken care by the obj*/
 572     msg_Dbg( p_this, "about to emit libvlc_snapshot_taken.make psz_str=0x%p"
 573              " (%s)", event.u.media_player_snapshot_taken.psz_filename,
 574              event.u.media_player_snapshot_taken.psz_filename );
 575     libvlc_event_send( p_mi->p_event_manager, &event );
 576
 577     return VLC_SUCCESS;
 578 }
 579
 580 /**************************************************************************
 581  * Tell media player to start playing.
 582  **************************************************************************/
 583 void libvlc_media_player_play( libvlc_media_player_t *p_mi,
 584                                  libvlc_exception_t *p_e )
 585 {
 586     input_thread_t * p_input_thread;
 587
 588     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 589     {
 590         /* A thread already exists, send it a play message */
 591         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 592         vlc_object_release( p_input_thread );
 593         return;
 594     }
 595
 596     /* Ignore previous exception */
 597     libvlc_exception_clear( p_e );
 598
 599     vlc_mutex_lock( &p_mi->object_lock );
 600
 601     if( !p_mi->p_md )
 602     {
 603         libvlc_exception_raise( p_e, "no associated media descriptor" );
 604         vlc_mutex_unlock( &p_mi->object_lock );
 605         return;
 606     }
 607
 608     p_mi->p_input_thread = input_Create( p_mi->p_libvlc_instance->p_libvlc_int,
 609                                          p_mi->p_md->p_input_item, NULL, NULL );
 610
 611     if( !p_mi->p_input_thread )
 612     {
 613         vlc_mutex_unlock( &p_mi->object_lock );
 614         return;
 615     }
 616
 617     p_input_thread = p_mi->p_input_thread;
 618
 619     var_Create( p_input_thread, "drawable-agl", VLC_VAR_INTEGER );
 620     if( p_mi->drawable.agl )
 621         var_SetInteger( p_input_thread, "drawable-agl", p_mi->drawable.agl );
 622
 623     var_Create( p_input_thread, "drawable-xid", VLC_VAR_INTEGER );
 624     if( p_mi->drawable.xid )
 625         var_SetInteger( p_input_thread, "drawable-xid", p_mi->drawable.xid );
 626
 627     var_Create( p_input_thread, "drawable-hwnd", VLC_VAR_ADDRESS );
 628     if( p_mi->drawable.hwnd != NULL )
 629     {
 630         vlc_value_t val = { .p_address = p_mi->drawable.hwnd };
 631         var_Set( p_input_thread, "drawable-hwnd", val );
 632     }
 633
 634         var_Create( p_input_thread, "drawable-nsobject", VLC_VAR_ADDRESS );
 635     if( p_mi->drawable.nsobject != NULL )
 636     {
 637         vlc_value_t val = { .p_address = p_mi->drawable.nsobject };
 638         var_Set( p_input_thread, "drawable-nsobject", val );
 639     }
 640
 641     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 642     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 643     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 644
 645     if( input_Start( p_input_thread ) )
 646     {
 647         vlc_object_release( p_input_thread );
 648         p_mi->p_input_thread = NULL;
 649     }
 650
 651     vlc_mutex_unlock( &p_mi->object_lock );
 652 }
 653
 654 /**************************************************************************
 655  * Pause.
 656  **************************************************************************/
 657 void libvlc_media_player_pause( libvlc_media_player_t *p_mi,
 658                                   libvlc_exception_t *p_e )
 659 {
 660     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 661     if( !p_input_thread )
 662         return;
 663
 664     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 665     if( state == libvlc_Playing || state == libvlc_Buffering )
 666     {
 667         if( libvlc_media_player_can_pause( p_mi, p_e ) )
 668             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 669         else
 670             libvlc_media_player_stop( p_mi, p_e );
 671     }
 672     else
 673         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 674
 675     vlc_object_release( p_input_thread );
 676 }
 677
 678 /**************************************************************************
 679  * Tells whether the media player is currently playing.
 680  *
 681  * Enter with lock held.
 682  **************************************************************************/
 683 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi,
 684                                      libvlc_exception_t *p_e )
 685 {
 686     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 687     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 688 }
 689
 690 /**************************************************************************
 691  * Stop playing.
 692  **************************************************************************/
 693 void libvlc_media_player_stop( libvlc_media_player_t *p_mi,
 694                                  libvlc_exception_t *p_e )
 695 {
 696     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 697
 698     if( state == libvlc_Playing ||
 699         state == libvlc_Paused ||
 700         state == libvlc_Buffering )
 701     {
 702         /* Send a stop notification event only if we are in playing,
 703          * buffering or paused states */
 704         libvlc_media_set_state( p_mi->p_md, libvlc_Ended, p_e );
 705
 706         /* Construct and send the event */
 707         libvlc_event_t event;
 708         event.type = libvlc_MediaPlayerStopped;
 709         libvlc_event_send( p_mi->p_event_manager, &event );
 710     }
 711
 712     if( p_mi->b_own_its_input_thread )
 713     {
 714         vlc_mutex_lock( &p_mi->object_lock );
 715         release_input_thread( p_mi, true ); /* This will stop the input thread */
 716         vlc_mutex_unlock( &p_mi->object_lock );
 717     }
 718     else
 719     {
 720         input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 721         if( !p_input_thread )
 722             return;
 723
 724         input_Stop( p_input_thread, true );
 725         vlc_object_release( p_input_thread );
 726         p_mi->p_input_thread = NULL;
 727     }
 728 }
 729
 730 /**************************************************************************
 731  * set_nsobject
 732  **************************************************************************/
 733 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 734                                         void * drawable,
 735                                         libvlc_exception_t *p_e )
 736 {
 737     (void) p_e;
 738     p_mi->drawable.nsobject = drawable;
 739 }
 740
 741 /**************************************************************************
 742  * get_nsobject
 743  **************************************************************************/
 744 uint32_t libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 745 {
 746     return p_mi->drawable.nsobject;
 747 }
 748
 749 /**************************************************************************
 750  * set_agl
 751  **************************************************************************/
 752 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 753                                       uint32_t drawable,
 754                                       libvlc_exception_t *p_e )
 755 {
 756     (void) p_e;
 757     p_mi->drawable.agl = drawable;
 758 }
 759
 760 /**************************************************************************
 761  * get_agl
 762  **************************************************************************/
 763 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 764 {
 765     return p_mi->drawable.agl;
 766 }
 767
 768 /**************************************************************************
 769  * set_xwindow
 770  **************************************************************************/
 771 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 772                                       uint32_t drawable,
 773                                       libvlc_exception_t *p_e )
 774 {
 775     (void) p_e;
 776     p_mi->drawable.xid = drawable;
 777 }
 778
 779 /**************************************************************************
 780  * get_xwindow
 781  **************************************************************************/
 782 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 783 {
 784     return p_mi->drawable.xid;
 785 }
 786
 787 /**************************************************************************
 788  * set_hwnd
 789  **************************************************************************/
 790 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 791                                    void *drawable,
 792                                    libvlc_exception_t *p_e )
 793 {
 794     (void) p_e;
 795     p_mi->drawable.hwnd = drawable;
 796 }
 797
 798 /**************************************************************************
 799  * get_hwnd
 800  **************************************************************************/
 801 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 802 {
 803     return p_mi->drawable.hwnd;
 804 }
 805
 806 /**************************************************************************
 807  * Set Drawable
 808  **************************************************************************/
 809 void libvlc_media_player_set_drawable( libvlc_media_player_t *p_mi,
 810                                        libvlc_drawable_t drawable,
 811                                        libvlc_exception_t *p_e )
 812 {
 813 #ifdef WIN32
 814     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 815         p_mi->drawable.hwnd = (HWND)drawable;
 816     else
 817         libvlc_exception_raise(p_e, "Operation not supported");
 818 #elif defined(__APPLE__)
 819     p_mi->drawable.agl = drawable;
 820     (void) p_e;
 821 #else
 822     p_mi->drawable.xid = drawable;
 823     (void) p_e;
 824 #endif
 825 }
 826
 827 /**************************************************************************
 828  * Get Drawable
 829  **************************************************************************/
 830 libvlc_drawable_t
 831 libvlc_media_player_get_drawable ( libvlc_media_player_t *p_mi,
 832                                    libvlc_exception_t *p_e )
 833 {
 834     VLC_UNUSED(p_e);
 835
 836 #ifdef WIN32
 837     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 838         return (libvlc_drawable_t)p_mi->drawable.hwnd;
 839     else
 840         return 0;
 841 #elif defined(__APPLE__)
 842     return p_mi->drawable.agl;
 843 #else
 844     return p_mi->drawable.xid;
 845 #endif
 846 }
 847
 848 /**************************************************************************
 849  * Getters for stream information
 850  **************************************************************************/
 851 libvlc_time_t libvlc_media_player_get_length(
 852                              libvlc_media_player_t *p_mi,
 853                              libvlc_exception_t *p_e )
 854 {
 855     input_thread_t *p_input_thread;
 856     vlc_value_t val;
 857
 858     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 859     if( !p_input_thread )
 860         return -1;
 861
 862     var_Get( p_input_thread, "length", &val );
 863     vlc_object_release( p_input_thread );
 864
 865     return (val.i_time+500LL)/1000LL;
 866 }
 867
 868 libvlc_time_t libvlc_media_player_get_time(
 869                                    libvlc_media_player_t *p_mi,
 870                                    libvlc_exception_t *p_e )
 871 {
 872     input_thread_t *p_input_thread;
 873     vlc_value_t val;
 874
 875     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 876     if( !p_input_thread )
 877         return -1;
 878
 879     var_Get( p_input_thread , "time", &val );
 880     vlc_object_release( p_input_thread );
 881     return (val.i_time+500LL)/1000LL;
 882 }
 883
 884 void libvlc_media_player_set_time(
 885                                  libvlc_media_player_t *p_mi,
 886                                  libvlc_time_t time,
 887                                  libvlc_exception_t *p_e )
 888 {
 889     input_thread_t *p_input_thread;
 890
 891     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 892     if( !p_input_thread )
 893         return;
 894
 895     var_SetTime( p_input_thread, "time", time*1000LL );
 896     vlc_object_release( p_input_thread );
 897 }
 898
 899 void libvlc_media_player_set_position(
 900                                 libvlc_media_player_t *p_mi,
 901                                 float position,
 902                                 libvlc_exception_t *p_e )
 903 {
 904     input_thread_t *p_input_thread;
 905
 906     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 907     if( !p_input_thread )
 908         return;
 909
 910     var_SetFloat( p_input_thread, "position", position );
 911     vlc_object_release( p_input_thread );
 912 }
 913
 914 float libvlc_media_player_get_position(
 915                                  libvlc_media_player_t *p_mi,
 916                                  libvlc_exception_t *p_e )
 917 {
 918     input_thread_t *p_input_thread;
 919     vlc_value_t val;
 920
 921     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 922     if( !p_input_thread )
 923         return -1.0;
 924
 925     var_Get( p_input_thread, "position", &val );
 926     vlc_object_release( p_input_thread );
 927
 928     return val.f_float;
 929 }
 930
 931 void libvlc_media_player_set_chapter(
 932                                  libvlc_media_player_t *p_mi,
 933                                  int chapter,
 934                                  libvlc_exception_t *p_e )
 935 {
 936     input_thread_t *p_input_thread;
 937
 938     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 939     if( !p_input_thread )
 940         return;
 941
 942     var_SetInteger( p_input_thread, "chapter", chapter );
 943     vlc_object_release( p_input_thread );
 944 }
 945
 946 int libvlc_media_player_get_chapter(
 947                                  libvlc_media_player_t *p_mi,
 948                                  libvlc_exception_t *p_e )
 949 {
 950     input_thread_t *p_input_thread;
 951     vlc_value_t val;
 952
 953     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 954     if( !p_input_thread )
 955         return -1;
 956
 957     var_Get( p_input_thread, "chapter", &val );
 958     vlc_object_release( p_input_thread );
 959
 960     return val.i_int;
 961 }
 962
 963 int libvlc_media_player_get_chapter_count(
 964                                  libvlc_media_player_t *p_mi,
 965                                  libvlc_exception_t *p_e )
 966 {
 967     input_thread_t *p_input_thread;
 968     vlc_value_t val;
 969
 970     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 971     if( !p_input_thread )
 972         return -1;
 973
 974     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 975     vlc_object_release( p_input_thread );
 976
 977     return val.i_int;
 978 }
 979
 980 int libvlc_media_player_get_chapter_count_for_title(
 981                                  libvlc_media_player_t *p_mi,
 982                                  int i_title,
 983                                  libvlc_exception_t *p_e )
 984 {
 985     input_thread_t *p_input_thread;
 986     vlc_value_t val;
 987
 988     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 989     if( !p_input_thread )
 990         return -1;
 991
 992     char *psz_name;
 993     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 994     {
 995         vlc_object_release( p_input_thread );
 996         return -1;
 997     }
 998     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 999     vlc_object_release( p_input_thread );
1000     free( psz_name );
1001
1002     return val.i_int;
1003 }
1004
1005 void libvlc_media_player_set_title(
1006                                  libvlc_media_player_t *p_mi,
1007                                  int i_title,
1008                                  libvlc_exception_t *p_e )
1009 {
1010     input_thread_t *p_input_thread;
1011
1012     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1013     if( !p_input_thread )
1014         return;
1015
1016     var_SetInteger( p_input_thread, "title", i_title );
1017     vlc_object_release( p_input_thread );
1018
1019     //send event
1020     libvlc_event_t event;
1021     event.type = libvlc_MediaPlayerTitleChanged;
1022     event.u.media_player_title_changed.new_title = i_title;
1023     libvlc_event_send( p_mi->p_event_manager, &event );
1024 }
1025
1026 int libvlc_media_player_get_title(
1027                                  libvlc_media_player_t *p_mi,
1028                                  libvlc_exception_t *p_e )
1029 {
1030     input_thread_t *p_input_thread;
1031     vlc_value_t val;
1032
1033     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1034     if( !p_input_thread )
1035         return -1;
1036
1037     var_Get( p_input_thread, "title", &val );
1038     vlc_object_release( p_input_thread );
1039
1040     return val.i_int;
1041 }
1042
1043 int libvlc_media_player_get_title_count(
1044                                  libvlc_media_player_t *p_mi,
1045                                  libvlc_exception_t *p_e )
1046 {
1047     input_thread_t *p_input_thread;
1048     vlc_value_t val;
1049
1050     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1051     if( !p_input_thread )
1052         return -1;
1053
1054     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1055     vlc_object_release( p_input_thread );
1056
1057     return val.i_int;
1058 }
1059
1060 void libvlc_media_player_next_chapter(
1061                                  libvlc_media_player_t *p_mi,
1062                                  libvlc_exception_t *p_e )
1063 {
1064     input_thread_t *p_input_thread;
1065
1066     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1067     if( !p_input_thread )
1068         return;
1069
1070     int i_type = var_Type( p_input_thread, "next-chapter" );
1071     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1072                             "next-chapter":"next-title", true );
1073
1074     vlc_object_release( p_input_thread );
1075 }
1076
1077 void libvlc_media_player_previous_chapter(
1078                                  libvlc_media_player_t *p_mi,
1079                                  libvlc_exception_t *p_e )
1080 {
1081     input_thread_t *p_input_thread;
1082
1083     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1084     if( !p_input_thread )
1085         return;
1086
1087     int i_type = var_Type( p_input_thread, "next-chapter" );
1088     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1089                             "prev-chapter":"prev-title", true );
1090
1091     vlc_object_release( p_input_thread );
1092 }
1093
1094 float libvlc_media_player_get_fps(
1095                                  libvlc_media_player_t *p_mi,
1096                                  libvlc_exception_t *p_e)
1097 {
1098     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1099     double f_fps = 0.0;
1100
1101     if( p_input_thread )
1102     {
1103         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1104             f_fps = 0.0;
1105         vlc_object_release( p_input_thread );
1106     }
1107     return f_fps;
1108 }
1109
1110 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi,
1111                                      libvlc_exception_t *p_e)
1112 {
1113     input_thread_t *p_input_thread =
1114                             libvlc_get_input_thread ( p_mi, p_e);
1115     if ( !p_input_thread )
1116         return false;
1117
1118     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
1119     {
1120         vlc_object_release( p_input_thread );
1121         return true;
1122     }
1123     vlc_object_release( p_input_thread );
1124     return false;
1125 }
1126
1127 void libvlc_media_player_set_rate(
1128                                  libvlc_media_player_t *p_mi,
1129                                  float rate,
1130                                  libvlc_exception_t *p_e )
1131 {
1132     input_thread_t *p_input_thread;
1133     bool b_can_rewind;
1134
1135     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1136     if( !p_input_thread )
1137         return;
1138
1139     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1140     if( (rate < 0.0) && !b_can_rewind )
1141     {
1142         vlc_object_release( p_input_thread );
1143         libvlc_exception_raise( p_e, "Rate value is invalid" );
1144         return;
1145     }
1146
1147     var_SetInteger( p_input_thread, "rate", 1000.0f/rate );
1148     vlc_object_release( p_input_thread );
1149 }
1150
1151 float libvlc_media_player_get_rate(
1152                                  libvlc_media_player_t *p_mi,
1153                                  libvlc_exception_t *p_e )
1154 {
1155     input_thread_t *p_input_thread;
1156     vlc_value_t val;
1157     bool b_can_rewind;
1158
1159     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1160     if( !p_input_thread )
1161         return 0.0;  /* rate < 0 indicates rewind */
1162
1163     var_Get( p_input_thread, "rate", &val );
1164     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1165     if( (val.i_int < 0) && !b_can_rewind )
1166     {
1167         libvlc_exception_raise( p_e, "invalid rate" );
1168         return 0.0;
1169     }
1170     vlc_object_release( p_input_thread );
1171
1172     return (float)1000.0f/val.i_int;
1173 }
1174
1175 libvlc_state_t libvlc_media_player_get_state(
1176                                  libvlc_media_player_t *p_mi,
1177                                  libvlc_exception_t *p_e )
1178 {
1179     input_thread_t *p_input_thread;
1180     libvlc_state_t state = libvlc_Ended;
1181     vlc_value_t val;
1182
1183     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1184     if( !p_input_thread )
1185     {
1186         /* We do return the right value, no need to throw an exception */
1187         if( libvlc_exception_raised( p_e ) )
1188             libvlc_exception_clear( p_e );
1189         return state;
1190     }
1191
1192     var_Get( p_input_thread, "state", &val );
1193     state = vlc_to_libvlc_state(val.i_int);
1194
1195     if( state == libvlc_Playing )
1196     {
1197         float caching;
1198         caching = var_GetFloat( p_input_thread, "cache" );
1199         if( caching > 0.0 && caching < 1.0 )
1200             state = libvlc_Buffering;
1201     }
1202     vlc_object_release( p_input_thread );
1203     return state;
1204 }
1205
1206 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi,
1207                                        libvlc_exception_t *p_e )
1208 {
1209     input_thread_t *p_input_thread;
1210     vlc_value_t val;
1211
1212     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1213     if ( !p_input_thread )
1214     {
1215         /* We do return the right value, no need to throw an exception */
1216         if( libvlc_exception_raised( p_e ) )
1217             libvlc_exception_clear( p_e );
1218         return false;
1219     }
1220     var_Get( p_input_thread, "can-seek", &val );
1221     vlc_object_release( p_input_thread );
1222
1223     return val.b_bool;
1224 }
1225
1226 /* internal function, used by audio, video */
1227 libvlc_track_description_t *
1228         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1229                                       const char *psz_variable,
1230                                       libvlc_exception_t *p_e )
1231 {
1232     input_thread_t *p_input = libvlc_get_input_thread( p_mi, p_e );
1233
1234     if( !p_input )
1235         return NULL;
1236
1237     vlc_value_t val_list, text_list;
1238     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1239
1240     if( val_list.p_list->i_count <= 0 ) /* no tracks */
1241         return NULL;
1242
1243     libvlc_track_description_t *p_track_description, *p_actual, *p_previous;
1244     p_track_description = ( libvlc_track_description_t * )
1245         malloc( sizeof( libvlc_track_description_t ) );
1246     if ( !p_track_description )
1247     {
1248         var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1249                     &val_list, &text_list);
1250         vlc_object_release( p_input );
1251         libvlc_exception_raise( p_e, "no enough memory" );
1252         return NULL;
1253     }
1254     p_actual = p_track_description;
1255     p_previous = NULL;
1256     for( int i = 0; i < val_list.p_list->i_count; i++ )
1257     {
1258         if( !p_actual )
1259         {
1260             p_actual = ( libvlc_track_description_t * )
1261                 malloc( sizeof( libvlc_track_description_t ) );
1262             if ( !p_actual )
1263             {
1264                 libvlc_track_description_release( p_track_description );
1265                 var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1266                             &val_list, &text_list);
1267                 vlc_object_release( p_input );
1268                 libvlc_exception_raise( p_e, "no enough memory" );
1269                 return NULL;
1270             }
1271         }
1272         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1273         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1274         p_actual->p_next = NULL;
1275         if( p_previous )
1276             p_previous->p_next = p_actual;
1277         p_previous = p_actual;
1278         p_actual =  NULL;
1279     }
1280     var_Change( p_input, psz_variable, VLC_VAR_FREELIST, &val_list, &text_list);
1281     vlc_object_release( p_input );
1282
1283     return p_track_description;
1284 }
1285
1286 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1287 {
1288     libvlc_track_description_t *p_actual, *p_before;
1289     p_actual = p_td;
1290
1291     while ( p_actual )
1292     {
1293         free( p_actual->psz_name );
1294         p_before = p_actual;
1295         p_actual = p_before->p_next;
1296         free( p_before );
1297     }
1298 }
1299
1300 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi,
1301                                      libvlc_exception_t *p_e )
1302 {
1303     input_thread_t *p_input_thread;
1304     vlc_value_t val;
1305
1306     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1307     if ( !p_input_thread )
1308     {
1309         /* We do return the right value, no need to throw an exception */
1310         if( libvlc_exception_raised( p_e ) )
1311             libvlc_exception_clear( p_e );
1312         return false;
1313     }
1314     var_Get( p_input_thread, "can-pause", &val );
1315     vlc_object_release( p_input_thread );
1316
1317     return val.b_bool;
1318 }