git.sesse.net Git - vlc/blob - src/control/media_player.c

   1 /*****************************************************************************
   2  * media_player.c: Libvlc API Media Instance management functions
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #include "libvlc_internal.h"
  25
  26 #include <vlc/libvlc.h>
  27 #include <vlc_demux.h>
  28 #include <vlc_input.h>
  29 #include <vlc_vout.h>
  30 #include "libvlc.h"
  31 #include <assert.h>
  32
  33 static int
  34 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
  35                         vlc_value_t oldval, vlc_value_t newval,
  36                         void * p_userdata );
  37 static int
  38 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
  39                         vlc_value_t oldval, vlc_value_t newval,
  40                         void * p_userdata );
  41 static int
  42 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
  43                      vlc_value_t oldval, vlc_value_t newval,
  44                      void * p_userdata );
  45
  46 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
  47                        vlc_value_t oldval, vlc_value_t newval, void *p_data );
  48
  49 static const libvlc_state_t vlc_to_libvlc_state_array[] =
  50 {
  51     [INIT_S]        = libvlc_NothingSpecial,
  52     [OPENING_S]     = libvlc_Opening,
  53     [PLAYING_S]     = libvlc_Playing,
  54     [PAUSE_S]       = libvlc_Paused,
  55     [END_S]         = libvlc_Ended,
  56     [ERROR_S]       = libvlc_Error,
  57 };
  58
  59 static inline libvlc_state_t vlc_to_libvlc_state( int vlc_state )
  60 {
  61     if( vlc_state < 0 || vlc_state > 6 )
  62         return libvlc_Ended;
  63
  64     return vlc_to_libvlc_state_array[vlc_state];
  65 }
  66
  67 /*
  68  * Release the associated input thread.
  69  *
  70  * Object lock is NOT held.
  71  */
  72 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
  73 {
  74     input_thread_t * p_input_thread;
  75
  76     if( !p_mi || !p_mi->p_input_thread )
  77         return;
  78
  79     p_input_thread = p_mi->p_input_thread;
  80
  81     /* No one is tracking this input_thread apart from us. Destroy it. */
  82     if( p_mi->b_own_its_input_thread )
  83     {
  84         var_DelCallback( p_input_thread, "can-seek",
  85                          input_seekable_changed, p_mi );
  86         var_DelCallback( p_input_thread, "can-pause",
  87                          input_pausable_changed, p_mi );
  88         var_DelCallback( p_input_thread, "intf-event",
  89                          input_event_changed, p_mi );
  90
  91         /* We owned this one */
  92         input_StopThread( p_input_thread, b_input_abort );
  93         vlc_thread_join( p_input_thread );
  94
  95         var_Destroy( p_input_thread, "drawable-hwnd" );
  96         var_Destroy( p_input_thread, "drawable-xid" );
  97         var_Destroy( p_input_thread, "drawable-agl" );
  98     }
  99
 100     vlc_object_release( p_input_thread );
 101
 102     p_mi->p_input_thread = NULL;
 103 }
 104
 105 /*
 106  * Retrieve the input thread. Be sure to release the object
 107  * once you are done with it. (libvlc Internal)
 108  *
 109  * Function will lock the object.
 110  */
 111 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi,
 112                                          libvlc_exception_t *p_e )
 113 {
 114     input_thread_t *p_input_thread;
 115
 116     if( !p_mi ) RAISENULL( "Media Instance is NULL" );
 117
 118     vlc_mutex_lock( &p_mi->object_lock );
 119
 120     if( !p_mi->p_input_thread )
 121     {
 122         vlc_mutex_unlock( &p_mi->object_lock );
 123         RAISENULL( "Input is NULL" );
 124     }
 125
 126     p_input_thread = p_mi->p_input_thread;
 127     vlc_object_hold( p_input_thread );
 128
 129     vlc_mutex_unlock( &p_mi->object_lock );
 130
 131     return p_input_thread;
 132 }
 133
 134 static int
 135 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 136                         vlc_value_t oldval, vlc_value_t newval,
 137                         void * p_userdata )
 138 {
 139     VLC_UNUSED(oldval);
 140     VLC_UNUSED(p_this);
 141     VLC_UNUSED(psz_cmd);
 142     libvlc_media_player_t * p_mi = p_userdata;
 143     libvlc_event_t event;
 144
 145     libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 146     event.type = libvlc_MediaPlayerSeekableChanged;
 147     event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
 148
 149     libvlc_event_send( p_mi->p_event_manager, &event );
 150     return VLC_SUCCESS;
 151 }
 152
 153 static int
 154 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 155                         vlc_value_t oldval, vlc_value_t newval,
 156                         void * p_userdata )
 157 {
 158     VLC_UNUSED(oldval);
 159     VLC_UNUSED(p_this);
 160     VLC_UNUSED(psz_cmd);
 161     libvlc_media_player_t * p_mi = p_userdata;
 162     libvlc_event_t event;
 163
 164     libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 165     event.type = libvlc_MediaPlayerPausableChanged;
 166     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 167
 168     libvlc_event_send( p_mi->p_event_manager, &event );
 169     return VLC_SUCCESS;
 170 }
 171
 172 static int
 173 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 174                      vlc_value_t oldval, vlc_value_t newval,
 175                      void * p_userdata )
 176 {
 177     VLC_UNUSED(oldval);
 178     input_thread_t * p_input = (input_thread_t *)p_this;
 179     libvlc_media_player_t * p_mi = p_userdata;
 180     libvlc_event_t event;
 181
 182     assert( !strcmp( psz_cmd, "intf-event" ) );
 183
 184     if( newval.i_int == INPUT_EVENT_STATE )
 185     {
 186         libvlc_state_t libvlc_state;
 187
 188         switch ( var_GetInteger( p_input, "state" ) )
 189         {
 190             case INIT_S:
 191                 libvlc_state = libvlc_NothingSpecial;
 192                 event.type = libvlc_MediaPlayerNothingSpecial;
 193                 break;
 194             case OPENING_S:
 195                 libvlc_state = libvlc_Opening;
 196                 event.type = libvlc_MediaPlayerOpening;
 197                 break;
 198             case PLAYING_S:
 199                 libvlc_state = libvlc_Playing;
 200                 event.type = libvlc_MediaPlayerPlaying;
 201                 break;
 202             case PAUSE_S:
 203                 libvlc_state = libvlc_Paused;
 204                 event.type = libvlc_MediaPlayerPaused;
 205                 break;
 206             case END_S:
 207                 libvlc_state = libvlc_Ended;
 208                 event.type = libvlc_MediaPlayerEndReached;
 209                 break;
 210             case ERROR_S:
 211                 libvlc_state = libvlc_Error;
 212                 event.type = libvlc_MediaPlayerEncounteredError;
 213                 break;
 214
 215             default:
 216                 return VLC_SUCCESS;
 217         }
 218
 219         libvlc_media_set_state( p_mi->p_md, libvlc_state, NULL );
 220         libvlc_event_send( p_mi->p_event_manager, &event );
 221     }
 222     else if( newval.i_int == INPUT_EVENT_TIMES )
 223     {
 224         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 225             return VLC_SUCCESS; /* Don't send the position while stopped */
 226
 227         /* */
 228         event.type = libvlc_MediaPlayerPositionChanged;
 229         event.u.media_player_position_changed.new_position =
 230                                           var_GetFloat( p_input, "position" );
 231         libvlc_event_send( p_mi->p_event_manager, &event );
 232
 233         /* */
 234         event.type = libvlc_MediaPlayerTimeChanged;
 235         event.u.media_player_time_changed.new_time =
 236                                                var_GetTime( p_input, "time" );
 237         libvlc_event_send( p_mi->p_event_manager, &event );
 238     }
 239
 240     return VLC_SUCCESS;
 241
 242 }
 243
 244
 245 /**************************************************************************
 246  * Create a Media Instance object.
 247  *
 248  * Refcount strategy:
 249  * - All items created by _new start with a refcount set to 1.
 250  * - Accessor _release decrease the refcount by 1, if after that
 251  *   operation the refcount is 0, the object is destroyed.
 252  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 253  *
 254  * Object locking strategy:
 255  * - No lock held while in constructor.
 256  * - When accessing any member variable this lock is held. (XXX who locks?)
 257  * - When attempting to destroy the object the lock is also held.
 258  **************************************************************************/
 259 libvlc_media_player_t *
 260 libvlc_media_player_new( libvlc_instance_t * p_libvlc_instance,
 261                            libvlc_exception_t * p_e )
 262 {
 263     libvlc_media_player_t * p_mi;
 264
 265     if( !p_libvlc_instance )
 266     {
 267         libvlc_exception_raise( p_e, "invalid libvlc instance" );
 268         return NULL;
 269     }
 270
 271     p_mi = malloc( sizeof(libvlc_media_player_t) );
 272     if( !p_mi )
 273     {
 274         libvlc_exception_raise( p_e, "Not enough memory" );
 275         return NULL;
 276     }
 277     p_mi->p_md = NULL;
 278     p_mi->drawable.agl = 0;
 279     p_mi->drawable.xid = 0;
 280     p_mi->drawable.hwnd = NULL;
 281     p_mi->p_libvlc_instance = p_libvlc_instance;
 282     p_mi->p_input_thread = NULL;
 283     p_mi->i_refcount = 1;
 284     p_mi->b_own_its_input_thread = true;
 285     vlc_mutex_init( &p_mi->object_lock );
 286     p_mi->p_event_manager = libvlc_event_manager_new( p_mi,
 287             p_libvlc_instance, p_e );
 288     if( libvlc_exception_raised( p_e ) )
 289     {
 290         vlc_mutex_destroy( &p_mi->object_lock );
 291         free( p_mi );
 292         return NULL;
 293     }
 294
 295     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 296             libvlc_MediaPlayerNothingSpecial, p_e );
 297     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 298             libvlc_MediaPlayerOpening, p_e );
 299     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 300             libvlc_MediaPlayerBuffering, p_e );
 301     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 302             libvlc_MediaPlayerPlaying, p_e );
 303     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 304             libvlc_MediaPlayerPaused, p_e );
 305     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 306             libvlc_MediaPlayerStopped, p_e );
 307     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 308             libvlc_MediaPlayerForward, p_e );
 309     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 310             libvlc_MediaPlayerBackward, p_e );
 311     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 312             libvlc_MediaPlayerEndReached, p_e );
 313     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 314             libvlc_MediaPlayerEncounteredError, p_e );
 315
 316     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 317             libvlc_MediaPlayerPositionChanged, p_e );
 318     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 319             libvlc_MediaPlayerTimeChanged, p_e );
 320      libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 321             libvlc_MediaPlayerTitleChanged, p_e );
 322     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 323             libvlc_MediaPlayerSeekableChanged, p_e );
 324     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 325             libvlc_MediaPlayerPausableChanged, p_e );
 326
 327     /* Snapshot initialization */
 328     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 329            libvlc_MediaPlayerSnapshotTaken, p_e );
 330     /* Attach a var callback to the global object to provide the glue between
 331         vout_thread that generates the event and media_player that re-emits it
 332         with its own event manager
 333     */
 334     var_Create( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 335                 VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 336     var_AddCallback( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 337                      SnapshotTakenCallback, p_mi );
 338
 339     return p_mi;
 340 }
 341
 342 /**************************************************************************
 343  * Create a Media Instance object with a media descriptor.
 344  **************************************************************************/
 345 libvlc_media_player_t *
 346 libvlc_media_player_new_from_media(
 347                                     libvlc_media_t * p_md,
 348                                     libvlc_exception_t *p_e )
 349 {
 350     libvlc_media_player_t * p_mi;
 351     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance, p_e );
 352
 353     if( !p_mi )
 354         return NULL;
 355
 356     libvlc_media_retain( p_md );
 357     p_mi->p_md = p_md;
 358
 359     return p_mi;
 360 }
 361
 362 /**************************************************************************
 363  * Create a new media instance object from an input_thread (Libvlc Internal).
 364  **************************************************************************/
 365 libvlc_media_player_t * libvlc_media_player_new_from_input_thread(
 366                                    struct libvlc_instance_t *p_libvlc_instance,
 367                                    input_thread_t *p_input,
 368                                    libvlc_exception_t *p_e )
 369 {
 370     libvlc_media_player_t * p_mi;
 371
 372     if( !p_input )
 373     {
 374         libvlc_exception_raise( p_e, "invalid input thread" );
 375         return NULL;
 376     }
 377
 378     p_mi = libvlc_media_player_new( p_libvlc_instance, p_e );
 379
 380     if( !p_mi )
 381         return NULL;
 382
 383     p_mi->p_md = libvlc_media_new_from_input_item(
 384                     p_libvlc_instance,
 385                     input_GetItem( p_input ), p_e );
 386
 387     if( !p_mi->p_md )
 388     {
 389         libvlc_media_player_destroy( p_mi );
 390         return NULL;
 391     }
 392
 393     /* will be released in media_player_release() */
 394     vlc_object_hold( p_input );
 395
 396     p_mi->p_input_thread = p_input;
 397     p_mi->b_own_its_input_thread = false;
 398
 399     return p_mi;
 400 }
 401
 402 /**************************************************************************
 403  * Destroy a Media Instance object (libvlc internal)
 404  *
 405  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 406  **************************************************************************/
 407 void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 408 {
 409     input_thread_t *p_input_thread;
 410     libvlc_exception_t p_e;
 411
 412     libvlc_exception_init( &p_e );
 413
 414     if( !p_mi )
 415         return;
 416
 417         /* Detach Callback from the main libvlc object */
 418     var_DelCallback( p_mi->p_libvlc_instance->p_libvlc_int,
 419                      "vout-snapshottaken", SnapshotTakenCallback, p_mi );
 420
 421     p_input_thread = libvlc_get_input_thread( p_mi, &p_e );
 422
 423     if( libvlc_exception_raised( &p_e ) )
 424     {
 425         libvlc_event_manager_release( p_mi->p_event_manager );
 426         libvlc_exception_clear( &p_e );
 427         free( p_mi );
 428         return; /* no need to worry about no input thread */
 429     }
 430     vlc_mutex_destroy( &p_mi->object_lock );
 431
 432     vlc_object_release( p_input_thread );
 433
 434     libvlc_media_release( p_mi->p_md );
 435
 436     free( p_mi );
 437 }
 438
 439 /**************************************************************************
 440  * Release a Media Instance object.
 441  *
 442  * Function does the locking.
 443  **************************************************************************/
 444 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 445 {
 446     if( !p_mi )
 447         return;
 448
 449     vlc_mutex_lock( &p_mi->object_lock );
 450
 451     p_mi->i_refcount--;
 452
 453     if( p_mi->i_refcount > 0 )
 454     {
 455         vlc_mutex_unlock( &p_mi->object_lock );
 456         return;
 457     }
 458     vlc_mutex_unlock( &p_mi->object_lock );
 459     vlc_mutex_destroy( &p_mi->object_lock );
 460
 461     release_input_thread( p_mi, true );
 462
 463     libvlc_event_manager_release( p_mi->p_event_manager );
 464
 465     libvlc_media_release( p_mi->p_md );
 466
 467     free( p_mi );
 468 }
 469
 470 /**************************************************************************
 471  * Retain a Media Instance object.
 472  *
 473  * Caller must hold the lock.
 474  **************************************************************************/
 475 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 476 {
 477     if( !p_mi )
 478         return;
 479
 480     p_mi->i_refcount++;
 481 }
 482
 483 /**************************************************************************
 484  * Set the Media descriptor associated with the instance.
 485  *
 486  * Enter without lock -- function will lock the object.
 487  **************************************************************************/
 488 void libvlc_media_player_set_media(
 489                             libvlc_media_player_t *p_mi,
 490                             libvlc_media_t *p_md,
 491                             libvlc_exception_t *p_e )
 492 {
 493     VLC_UNUSED(p_e);
 494
 495     if( !p_mi )
 496         return;
 497
 498     vlc_mutex_lock( &p_mi->object_lock );
 499
 500     /* FIXME I am not sure if it is a user request or on die(eof/error)
 501      * request here */
 502     release_input_thread( p_mi,
 503                           p_mi->p_input_thread &&
 504                           !p_mi->p_input_thread->b_eof &&
 505                           !p_mi->p_input_thread->b_error );
 506
 507     if( p_mi->p_md )
 508         libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, p_e );
 509
 510     libvlc_media_release( p_mi->p_md );
 511
 512     if( !p_md )
 513     {
 514         p_mi->p_md = NULL;
 515         vlc_mutex_unlock( &p_mi->object_lock );
 516         return; /* It is ok to pass a NULL md */
 517     }
 518
 519     libvlc_media_retain( p_md );
 520     p_mi->p_md = p_md;
 521
 522     /* The policy here is to ignore that we were created using a different
 523      * libvlc_instance, because we don't really care */
 524     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 525
 526     vlc_mutex_unlock( &p_mi->object_lock );
 527 }
 528
 529 /**************************************************************************
 530  * Get the Media descriptor associated with the instance.
 531  **************************************************************************/
 532 libvlc_media_t *
 533 libvlc_media_player_get_media(
 534                             libvlc_media_player_t *p_mi,
 535                             libvlc_exception_t *p_e )
 536 {
 537     VLC_UNUSED(p_e);
 538
 539     if( !p_mi->p_md )
 540         return NULL;
 541
 542     libvlc_media_retain( p_mi->p_md );
 543     return p_mi->p_md;
 544 }
 545
 546 /**************************************************************************
 547  * Get the event Manager.
 548  **************************************************************************/
 549 libvlc_event_manager_t *
 550 libvlc_media_player_event_manager(
 551                             libvlc_media_player_t *p_mi,
 552                             libvlc_exception_t *p_e )
 553 {
 554     VLC_UNUSED(p_e);
 555
 556     return p_mi->p_event_manager;
 557 }
 558
 559 /**************************************************************************
 560  * Trigger a snapshot Taken Event.
 561  *************************************************************************/
 562 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
 563                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 564 {
 565     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
 566     VLC_UNUSED(p_this) ;
 567
 568     libvlc_media_player_t* p_mi = (libvlc_media_player_t*) p_data ;
 569     libvlc_event_t event ;
 570     event.type = libvlc_MediaPlayerSnapshotTaken ;
 571     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string ;
 572     /* Snapshot psz data is a vlc_variable owned by libvlc object .
 573          Its memmory management is taken care by the obj*/
 574     msg_Dbg( p_this, "about to emit libvlc_snapshot_taken.make psz_str=0x%p"
 575              " (%s)", event.u.media_player_snapshot_taken.psz_filename,
 576              event.u.media_player_snapshot_taken.psz_filename );
 577     libvlc_event_send( p_mi->p_event_manager, &event );
 578
 579     return VLC_SUCCESS;
 580 }
 581
 582 /**************************************************************************
 583  * Tell media player to start playing.
 584  **************************************************************************/
 585 void libvlc_media_player_play( libvlc_media_player_t *p_mi,
 586                                  libvlc_exception_t *p_e )
 587 {
 588     input_thread_t * p_input_thread;
 589
 590     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 591     {
 592         /* A thread already exists, send it a play message */
 593         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 594         vlc_object_release( p_input_thread );
 595         return;
 596     }
 597
 598     /* Ignore previous exception */
 599     libvlc_exception_clear( p_e );
 600
 601     vlc_mutex_lock( &p_mi->object_lock );
 602
 603     if( !p_mi->p_md )
 604     {
 605         libvlc_exception_raise( p_e, "no associated media descriptor" );
 606         vlc_mutex_unlock( &p_mi->object_lock );
 607         return;
 608     }
 609
 610     p_mi->p_input_thread = input_CreateThread(
 611             p_mi->p_libvlc_instance->p_libvlc_int, p_mi->p_md->p_input_item );
 612
 613     if( !p_mi->p_input_thread )
 614     {
 615         vlc_mutex_unlock( &p_mi->object_lock );
 616         return;
 617     }
 618
 619     p_input_thread = p_mi->p_input_thread;
 620
 621     var_Create( p_input_thread, "drawable-agl", VLC_VAR_INTEGER );
 622     if( p_mi->drawable.agl )
 623         var_SetInteger( p_input_thread, "drawable-agl", p_mi->drawable.agl );
 624
 625     var_Create( p_input_thread, "drawable-xid", VLC_VAR_INTEGER );
 626     if( p_mi->drawable.xid )
 627         var_SetInteger( p_input_thread, "drawable-xid", p_mi->drawable.xid );
 628
 629     var_Create( p_input_thread, "drawable-hwnd", VLC_VAR_ADDRESS );
 630     if( p_mi->drawable.hwnd != NULL )
 631     {
 632         vlc_value_t val = { .p_address = p_mi->drawable.hwnd };
 633         var_Set( p_input_thread, "drawable-hwnd", val );
 634     }
 635
 636     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 637     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 638     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 639
 640     vlc_mutex_unlock( &p_mi->object_lock );
 641 }
 642
 643 /**************************************************************************
 644  * Pause.
 645  **************************************************************************/
 646 void libvlc_media_player_pause( libvlc_media_player_t *p_mi,
 647                                   libvlc_exception_t *p_e )
 648 {
 649     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 650
 651     if( !p_input_thread )
 652         return;
 653
 654     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 655
 656     if( state == libvlc_Playing )
 657     {
 658         if( libvlc_media_player_can_pause( p_mi, p_e ) )
 659             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 660         else
 661             libvlc_media_player_stop( p_mi, p_e );
 662     }
 663     else
 664         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 665
 666     vlc_object_release( p_input_thread );
 667 }
 668
 669 /**************************************************************************
 670  * Tells whether the media player is currently playing.
 671  *
 672  * Enter with lock held.
 673  **************************************************************************/
 674 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi,
 675                                      libvlc_exception_t *p_e )
 676 {
 677     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 678     return libvlc_Playing == state;
 679 }
 680
 681
 682 /**************************************************************************
 683  * Stop playing.
 684  **************************************************************************/
 685 void libvlc_media_player_stop( libvlc_media_player_t *p_mi,
 686                                  libvlc_exception_t *p_e )
 687 {
 688     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 689
 690     if( state == libvlc_Playing || state == libvlc_Paused )
 691     {
 692         /* Send a stop notification event only if we are in playing or
 693          * paused states */
 694         libvlc_media_set_state( p_mi->p_md, libvlc_Ended, p_e );
 695
 696         /* Construct and send the event */
 697         libvlc_event_t event;
 698         event.type = libvlc_MediaPlayerStopped;
 699         libvlc_event_send( p_mi->p_event_manager, &event );
 700     }
 701
 702     if( p_mi->b_own_its_input_thread )
 703     {
 704         vlc_mutex_lock( &p_mi->object_lock );
 705         release_input_thread( p_mi, true ); /* This will stop the input thread */
 706         vlc_mutex_unlock( &p_mi->object_lock );
 707     }
 708     else
 709     {
 710         input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 711
 712         if( !p_input_thread )
 713             return;
 714
 715         input_StopThread( p_input_thread, true );
 716         vlc_object_release( p_input_thread );
 717         p_mi->p_input_thread = NULL;
 718     }
 719 }
 720
 721 /**************************************************************************
 722  * set_agl
 723  **************************************************************************/
 724 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 725                                       uint32_t drawable,
 726                                       libvlc_exception_t *p_e )
 727 {
 728     (void) p_e;
 729     p_mi->drawable.agl = drawable;
 730 }
 731
 732 /**************************************************************************
 733  * get_agl
 734  **************************************************************************/
 735 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 736 {
 737     return p_mi->drawable.agl;
 738 }
 739
 740 /**************************************************************************
 741  * set_xwindow
 742  **************************************************************************/
 743 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 744                                       uint32_t drawable,
 745                                       libvlc_exception_t *p_e )
 746 {
 747     (void) p_e;
 748     p_mi->drawable.xid = drawable;
 749 }
 750
 751 /**************************************************************************
 752  * get_xwindow
 753  **************************************************************************/
 754 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 755 {
 756     return p_mi->drawable.xid;
 757 }
 758
 759 /**************************************************************************
 760  * set_hwnd
 761  **************************************************************************/
 762 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 763                                    void *drawable,
 764                                    libvlc_exception_t *p_e )
 765 {
 766     (void) p_e;
 767     p_mi->drawable.hwnd = drawable;
 768 }
 769
 770 /**************************************************************************
 771  * get_hwnd
 772  **************************************************************************/
 773 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 774 {
 775     return p_mi->drawable.hwnd;
 776 }
 777
 778 /**************************************************************************
 779  * Set Drawable
 780  **************************************************************************/
 781 void libvlc_media_player_set_drawable( libvlc_media_player_t *p_mi,
 782                                        libvlc_drawable_t drawable,
 783                                        libvlc_exception_t *p_e )
 784 {
 785 #ifdef WIN32
 786     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 787         p_mi->drawable.hwnd = (HWND)drawable;
 788     else
 789         libvlc_exception_raise(p_e, "Operation not supported");
 790 #elif defined(__APPLE__)
 791     p_mi->drawable.agl = drawable;
 792     (void) p_e;
 793 #else
 794     p_mi->drawable.xid = drawable;
 795     (void) p_e;
 796 #endif
 797 }
 798
 799 /**************************************************************************
 800  * Get Drawable
 801  **************************************************************************/
 802 libvlc_drawable_t
 803 libvlc_media_player_get_drawable ( libvlc_media_player_t *p_mi,
 804                                    libvlc_exception_t *p_e )
 805 {
 806     VLC_UNUSED(p_e);
 807
 808 #ifdef WIN32
 809     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 810         return (libvlc_drawable_t)p_mi->drawable.hwnd;
 811     else
 812         return 0;
 813 #elif defined(__APPLE__)
 814     return p_mi->drawable.agl;
 815 #else
 816     return p_mi->drawable.xid;
 817 #endif
 818 }
 819
 820 /**************************************************************************
 821  * Getters for stream information
 822  **************************************************************************/
 823 libvlc_time_t libvlc_media_player_get_length(
 824                              libvlc_media_player_t *p_mi,
 825                              libvlc_exception_t *p_e )
 826 {
 827     input_thread_t *p_input_thread;
 828     vlc_value_t val;
 829
 830     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 831     if( !p_input_thread )
 832         return -1;
 833
 834     var_Get( p_input_thread, "length", &val );
 835     vlc_object_release( p_input_thread );
 836
 837     return (val.i_time+500LL)/1000LL;
 838 }
 839
 840 libvlc_time_t libvlc_media_player_get_time(
 841                                    libvlc_media_player_t *p_mi,
 842                                    libvlc_exception_t *p_e )
 843 {
 844     input_thread_t *p_input_thread;
 845     vlc_value_t val;
 846
 847     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 848     if( !p_input_thread )
 849         return -1;
 850
 851     var_Get( p_input_thread , "time", &val );
 852     vlc_object_release( p_input_thread );
 853     return (val.i_time+500LL)/1000LL;
 854 }
 855
 856 void libvlc_media_player_set_time(
 857                                  libvlc_media_player_t *p_mi,
 858                                  libvlc_time_t time,
 859                                  libvlc_exception_t *p_e )
 860 {
 861     input_thread_t *p_input_thread;
 862
 863     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 864     if( !p_input_thread )
 865         return;
 866
 867     var_SetTime( p_input_thread, "time", time*1000LL );
 868     vlc_object_release( p_input_thread );
 869 }
 870
 871 void libvlc_media_player_set_position(
 872                                 libvlc_media_player_t *p_mi,
 873                                 float position,
 874                                 libvlc_exception_t *p_e )
 875 {
 876     input_thread_t *p_input_thread;
 877
 878     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 879     if( !p_input_thread )
 880         return;
 881
 882     var_SetFloat( p_input_thread, "position", position );
 883     vlc_object_release( p_input_thread );
 884 }
 885
 886 float libvlc_media_player_get_position(
 887                                  libvlc_media_player_t *p_mi,
 888                                  libvlc_exception_t *p_e )
 889 {
 890     input_thread_t *p_input_thread;
 891     vlc_value_t val;
 892
 893     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 894     if( !p_input_thread )
 895         return -1.0;
 896
 897     var_Get( p_input_thread, "position", &val );
 898     vlc_object_release( p_input_thread );
 899
 900     return val.f_float;
 901 }
 902
 903 void libvlc_media_player_set_chapter(
 904                                  libvlc_media_player_t *p_mi,
 905                                  int chapter,
 906                                  libvlc_exception_t *p_e )
 907 {
 908     input_thread_t *p_input_thread;
 909
 910     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 911     if( !p_input_thread )
 912         return;
 913
 914     var_SetInteger( p_input_thread, "chapter", chapter );
 915     vlc_object_release( p_input_thread );
 916 }
 917
 918 int libvlc_media_player_get_chapter(
 919                                  libvlc_media_player_t *p_mi,
 920                                  libvlc_exception_t *p_e )
 921 {
 922     input_thread_t *p_input_thread;
 923     vlc_value_t val;
 924
 925     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 926     if( !p_input_thread )
 927         return -1;
 928
 929     var_Get( p_input_thread, "chapter", &val );
 930     vlc_object_release( p_input_thread );
 931
 932     return val.i_int;
 933 }
 934
 935 int libvlc_media_player_get_chapter_count(
 936                                  libvlc_media_player_t *p_mi,
 937                                  libvlc_exception_t *p_e )
 938 {
 939     input_thread_t *p_input_thread;
 940     vlc_value_t val;
 941
 942     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 943     if( !p_input_thread )
 944         return -1;
 945
 946     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 947     vlc_object_release( p_input_thread );
 948
 949     return val.i_int;
 950 }
 951
 952 int libvlc_media_player_get_chapter_count_for_title(
 953                                  libvlc_media_player_t *p_mi,
 954                                  int i_title,
 955                                  libvlc_exception_t *p_e )
 956 {
 957     input_thread_t *p_input_thread;
 958     vlc_value_t val;
 959
 960     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 961     if( !p_input_thread )
 962         return -1;
 963
 964     char *psz_name;
 965     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 966     {
 967         vlc_object_release( p_input_thread );
 968         return -1;
 969     }
 970     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 971     vlc_object_release( p_input_thread );
 972     free( psz_name );
 973
 974     return val.i_int;
 975 }
 976
 977 void libvlc_media_player_set_title(
 978                                  libvlc_media_player_t *p_mi,
 979                                  int i_title,
 980                                  libvlc_exception_t *p_e )
 981 {
 982     input_thread_t *p_input_thread;
 983
 984     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 985     if( !p_input_thread )
 986         return;
 987
 988     var_SetInteger( p_input_thread, "title", i_title );
 989     vlc_object_release( p_input_thread );
 990
 991     //send event
 992     libvlc_event_t event;
 993     event.type = libvlc_MediaPlayerTitleChanged;
 994     event.u.media_player_title_changed.new_title = i_title;
 995     libvlc_event_send( p_mi->p_event_manager, &event );
 996 }
 997
 998 int libvlc_media_player_get_title(
 999                                  libvlc_media_player_t *p_mi,
1000                                  libvlc_exception_t *p_e )
1001 {
1002     input_thread_t *p_input_thread;
1003     vlc_value_t val;
1004
1005     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1006     if( !p_input_thread )
1007         return -1;
1008
1009     var_Get( p_input_thread, "title", &val );
1010     vlc_object_release( p_input_thread );
1011
1012     return val.i_int;
1013 }
1014
1015 int libvlc_media_player_get_title_count(
1016                                  libvlc_media_player_t *p_mi,
1017                                  libvlc_exception_t *p_e )
1018 {
1019     input_thread_t *p_input_thread;
1020     vlc_value_t val;
1021
1022     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1023     if( !p_input_thread )
1024         return -1;
1025
1026     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1027     vlc_object_release( p_input_thread );
1028
1029     return val.i_int;
1030 }
1031
1032 void libvlc_media_player_next_chapter(
1033                                  libvlc_media_player_t *p_mi,
1034                                  libvlc_exception_t *p_e )
1035 {
1036     input_thread_t *p_input_thread;
1037
1038     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1039     if( !p_input_thread )
1040         return;
1041
1042     int i_type = var_Type( p_input_thread, "next-chapter" );
1043     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1044                             "next-chapter":"next-title", true );
1045
1046     vlc_object_release( p_input_thread );
1047 }
1048
1049 void libvlc_media_player_previous_chapter(
1050                                  libvlc_media_player_t *p_mi,
1051                                  libvlc_exception_t *p_e )
1052 {
1053     input_thread_t *p_input_thread;
1054
1055     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1056     if( !p_input_thread )
1057         return;
1058
1059     int i_type = var_Type( p_input_thread, "next-chapter" );
1060     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1061                             "prev-chapter":"prev-title", true );
1062
1063     vlc_object_release( p_input_thread );
1064 }
1065
1066 float libvlc_media_player_get_fps(
1067                                  libvlc_media_player_t *p_mi,
1068                                  libvlc_exception_t *p_e)
1069 {
1070     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1071     double f_fps = 0.0;
1072
1073     if( p_input_thread )
1074     {
1075         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1076             f_fps = 0.0;
1077         vlc_object_release( p_input_thread );
1078     }
1079     return f_fps;
1080 }
1081
1082 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi,
1083                                      libvlc_exception_t *p_e)
1084 {
1085     input_thread_t *p_input_thread =
1086                             libvlc_get_input_thread ( p_mi, p_e);
1087     if ( !p_input_thread )
1088         return false;
1089
1090     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
1091     {
1092         vlc_object_release( p_input_thread );
1093         return true;
1094     }
1095     vlc_object_release( p_input_thread );
1096     return false;
1097 }
1098
1099 void libvlc_media_player_set_rate(
1100                                  libvlc_media_player_t *p_mi,
1101                                  float rate,
1102                                  libvlc_exception_t *p_e )
1103 {
1104     input_thread_t *p_input_thread;
1105     bool b_can_rewind;
1106
1107     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1108     if( !p_input_thread )
1109         return;
1110
1111     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1112     if( (rate < 0.0) && !b_can_rewind )
1113     {
1114         vlc_object_release( p_input_thread );
1115         libvlc_exception_raise( p_e, "Rate value is invalid" );
1116         return;
1117     }
1118
1119     var_SetInteger( p_input_thread, "rate", 1000.0f/rate );
1120     vlc_object_release( p_input_thread );
1121 }
1122
1123 float libvlc_media_player_get_rate(
1124                                  libvlc_media_player_t *p_mi,
1125                                  libvlc_exception_t *p_e )
1126 {
1127     input_thread_t *p_input_thread;
1128     vlc_value_t val;
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 0.0;  /* rate < 0 indicates rewind */
1134
1135     var_Get( p_input_thread, "rate", &val );
1136     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1137     if( (val.i_int < 0) && !b_can_rewind )
1138     {
1139         libvlc_exception_raise( p_e, "invalid rate" );
1140         return 0.0;
1141     }
1142     vlc_object_release( p_input_thread );
1143
1144     return (float)1000.0f/val.i_int;
1145 }
1146
1147 libvlc_state_t libvlc_media_player_get_state(
1148                                  libvlc_media_player_t *p_mi,
1149                                  libvlc_exception_t *p_e )
1150 {
1151     input_thread_t *p_input_thread;
1152     libvlc_state_t state = libvlc_Ended;
1153     vlc_value_t val;
1154
1155     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1156     if( !p_input_thread )
1157     {
1158         /* We do return the right value, no need to throw an exception */
1159         if( libvlc_exception_raised( p_e ) )
1160             libvlc_exception_clear( p_e );
1161         return state;
1162     }
1163
1164     var_Get( p_input_thread, "state", &val );
1165     state = vlc_to_libvlc_state(val.i_int);
1166
1167     if( state == libvlc_Playing )
1168     {
1169         float caching;
1170         caching = var_GetFloat( p_input_thread, "cache" );
1171         if( caching > 0.0 && caching < 1.0 )
1172             state = libvlc_Buffering;
1173     }
1174     vlc_object_release( p_input_thread );
1175     return state;
1176 }
1177
1178 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi,
1179                                        libvlc_exception_t *p_e )
1180 {
1181     input_thread_t *p_input_thread;
1182     vlc_value_t val;
1183
1184     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1185     if ( !p_input_thread )
1186     {
1187         /* We do return the right value, no need to throw an exception */
1188         if( libvlc_exception_raised( p_e ) )
1189             libvlc_exception_clear( p_e );
1190         return false;
1191     }
1192     var_Get( p_input_thread, "can-seek", &val );
1193     vlc_object_release( p_input_thread );
1194
1195     return val.b_bool;
1196 }
1197
1198 /* internal function, used by audio, video */
1199 libvlc_track_description_t *
1200         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1201                                       const char *psz_variable,
1202                                       libvlc_exception_t *p_e )
1203 {
1204     input_thread_t *p_input = libvlc_get_input_thread( p_mi, p_e );
1205
1206     if( !p_input )
1207         return NULL;
1208
1209     vlc_value_t val_list, text_list;
1210     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1211
1212     if( val_list.p_list->i_count <= 0 ) /* no tracks */
1213         return NULL;
1214
1215     libvlc_track_description_t *p_track_description, *p_actual, *p_previous;
1216     p_track_description = ( libvlc_track_description_t * )
1217         malloc( sizeof( libvlc_track_description_t ) );
1218     if ( !p_track_description )
1219     {
1220         var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1221                     &val_list, &text_list);
1222         vlc_object_release( p_input );
1223         libvlc_exception_raise( p_e, "no enough memory" );
1224         return NULL;
1225     }
1226     p_actual = p_track_description;
1227     p_previous = NULL;
1228     for( int i = 0; i < val_list.p_list->i_count; i++ )
1229     {
1230         if( !p_actual )
1231         {
1232             p_actual = ( libvlc_track_description_t * )
1233                 malloc( sizeof( libvlc_track_description_t ) );
1234             if ( !p_actual )
1235             {
1236                 libvlc_track_description_release( p_track_description );
1237                 var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1238                             &val_list, &text_list);
1239                 vlc_object_release( p_input );
1240                 libvlc_exception_raise( p_e, "no enough memory" );
1241                 return NULL;
1242             }
1243         }
1244         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1245         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1246         p_actual->p_next = NULL;
1247         if( p_previous )
1248             p_previous->p_next = p_actual;
1249         p_previous = p_actual;
1250         p_actual =  NULL;
1251     }
1252     var_Change( p_input, psz_variable, VLC_VAR_FREELIST, &val_list, &text_list);
1253     vlc_object_release( p_input );
1254
1255     return p_track_description;
1256 }
1257
1258 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1259 {
1260     libvlc_track_description_t *p_actual, *p_before;
1261     p_actual = p_td;
1262
1263     while ( p_actual )
1264     {
1265         free( p_actual->psz_name );
1266         p_before = p_actual;
1267         p_actual = p_before->p_next;
1268         free( p_before );
1269     }
1270 }
1271
1272 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi,
1273                                      libvlc_exception_t *p_e )
1274 {
1275     input_thread_t *p_input_thread;
1276     vlc_value_t val;
1277
1278     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1279     if ( !p_input_thread )
1280     {
1281         /* We do return the right value, no need to throw an exception */
1282         if( libvlc_exception_raised( p_e ) )
1283             libvlc_exception_clear( p_e );
1284         return false;
1285     }
1286     var_Get( p_input_thread, "can-pause", &val );
1287     vlc_object_release( p_input_thread );
1288
1289     return val.b_bool;
1290 }