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     var_DelCallback( p_input_thread, "can-seek",
  82                      input_seekable_changed, p_mi );
  83     var_DelCallback( p_input_thread, "can-pause",
  84                     input_pausable_changed, p_mi );
  85     var_DelCallback( p_input_thread, "intf-event",
  86                      input_event_changed, p_mi );
  87
  88     /* We owned this one */
  89     input_Stop( p_input_thread, b_input_abort );
  90     vlc_thread_join( p_input_thread );
  91
  92     var_Destroy( p_input_thread, "drawable-hwnd" );
  93     var_Destroy( p_input_thread, "drawable-xid" );
  94     var_Destroy( p_input_thread, "drawable-agl" );
  95
  96     vlc_object_release( p_input_thread );
  97
  98     p_mi->p_input_thread = NULL;
  99 }
 100
 101 /*
 102  * Retrieve the input thread. Be sure to release the object
 103  * once you are done with it. (libvlc Internal)
 104  *
 105  * Function will lock the object.
 106  */
 107 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi,
 108                                          libvlc_exception_t *p_e )
 109 {
 110     input_thread_t *p_input_thread;
 111
 112     if( !p_mi ) RAISENULL( "Media Instance is NULL" );
 113
 114     vlc_mutex_lock( &p_mi->object_lock );
 115
 116     if( !p_mi->p_input_thread )
 117     {
 118         vlc_mutex_unlock( &p_mi->object_lock );
 119         RAISENULL( "Input is NULL" );
 120     }
 121
 122     p_input_thread = p_mi->p_input_thread;
 123     vlc_object_hold( p_input_thread );
 124
 125     vlc_mutex_unlock( &p_mi->object_lock );
 126
 127     return p_input_thread;
 128 }
 129
 130 static int
 131 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 132                         vlc_value_t oldval, vlc_value_t newval,
 133                         void * p_userdata )
 134 {
 135     VLC_UNUSED(oldval);
 136     VLC_UNUSED(p_this);
 137     VLC_UNUSED(psz_cmd);
 138     libvlc_media_player_t * p_mi = p_userdata;
 139     libvlc_event_t event;
 140
 141     libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 142     event.type = libvlc_MediaPlayerSeekableChanged;
 143     event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
 144
 145     libvlc_event_send( p_mi->p_event_manager, &event );
 146     return VLC_SUCCESS;
 147 }
 148
 149 static int
 150 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 151                         vlc_value_t oldval, vlc_value_t newval,
 152                         void * p_userdata )
 153 {
 154     VLC_UNUSED(oldval);
 155     VLC_UNUSED(p_this);
 156     VLC_UNUSED(psz_cmd);
 157     libvlc_media_player_t * p_mi = p_userdata;
 158     libvlc_event_t event;
 159
 160     libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 161     event.type = libvlc_MediaPlayerPausableChanged;
 162     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 163
 164     libvlc_event_send( p_mi->p_event_manager, &event );
 165     return VLC_SUCCESS;
 166 }
 167
 168 static int
 169 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 170                      vlc_value_t oldval, vlc_value_t newval,
 171                      void * p_userdata )
 172 {
 173     VLC_UNUSED(oldval);
 174     input_thread_t * p_input = (input_thread_t *)p_this;
 175     libvlc_media_player_t * p_mi = p_userdata;
 176     libvlc_event_t event;
 177
 178     assert( !strcmp( psz_cmd, "intf-event" ) );
 179
 180     if( newval.i_int == INPUT_EVENT_STATE )
 181     {
 182         libvlc_state_t libvlc_state;
 183
 184         switch ( var_GetInteger( p_input, "state" ) )
 185         {
 186             case INIT_S:
 187                 libvlc_state = libvlc_NothingSpecial;
 188                 event.type = libvlc_MediaPlayerNothingSpecial;
 189                 break;
 190             case OPENING_S:
 191                 libvlc_state = libvlc_Opening;
 192                 event.type = libvlc_MediaPlayerOpening;
 193                 break;
 194             case PLAYING_S:
 195                 libvlc_state = libvlc_Playing;
 196                 event.type = libvlc_MediaPlayerPlaying;
 197                 break;
 198             case PAUSE_S:
 199                 libvlc_state = libvlc_Paused;
 200                 event.type = libvlc_MediaPlayerPaused;
 201                 break;
 202             case END_S:
 203                 libvlc_state = libvlc_Ended;
 204                 event.type = libvlc_MediaPlayerEndReached;
 205                 break;
 206             case ERROR_S:
 207                 libvlc_state = libvlc_Error;
 208                 event.type = libvlc_MediaPlayerEncounteredError;
 209                 break;
 210
 211             default:
 212                 return VLC_SUCCESS;
 213         }
 214
 215         libvlc_media_set_state( p_mi->p_md, libvlc_state, NULL );
 216         libvlc_event_send( p_mi->p_event_manager, &event );
 217     }
 218     else if( newval.i_int == INPUT_EVENT_POSITION )
 219     {
 220         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 221             return VLC_SUCCESS; /* Don't send the position while stopped */
 222
 223         /* */
 224         event.type = libvlc_MediaPlayerPositionChanged;
 225         event.u.media_player_position_changed.new_position =
 226                                           var_GetFloat( p_input, "position" );
 227         libvlc_event_send( p_mi->p_event_manager, &event );
 228
 229         /* */
 230         event.type = libvlc_MediaPlayerTimeChanged;
 231         event.u.media_player_time_changed.new_time =
 232                                                var_GetTime( p_input, "time" );
 233         libvlc_event_send( p_mi->p_event_manager, &event );
 234     }
 235
 236     return VLC_SUCCESS;
 237
 238 }
 239
 240 static void libvlc_media_player_destroy( libvlc_media_player_t * );
 241
 242 /**************************************************************************
 243  * Create a Media Instance object.
 244  *
 245  * Refcount strategy:
 246  * - All items created by _new start with a refcount set to 1.
 247  * - Accessor _release decrease the refcount by 1, if after that
 248  *   operation the refcount is 0, the object is destroyed.
 249  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 250  *
 251  * Object locking strategy:
 252  * - No lock held while in constructor.
 253  * - When accessing any member variable this lock is held. (XXX who locks?)
 254  * - When attempting to destroy the object the lock is also held.
 255  **************************************************************************/
 256 libvlc_media_player_t *
 257 libvlc_media_player_new( libvlc_instance_t * p_libvlc_instance,
 258                            libvlc_exception_t * p_e )
 259 {
 260     libvlc_media_player_t * p_mi;
 261
 262     if( !p_libvlc_instance )
 263     {
 264         libvlc_exception_raise( p_e, "invalid libvlc instance" );
 265         return NULL;
 266     }
 267
 268     p_mi = malloc( sizeof(libvlc_media_player_t) );
 269     if( !p_mi )
 270     {
 271         libvlc_exception_raise( p_e, "Not enough memory" );
 272         return NULL;
 273     }
 274     p_mi->p_md = NULL;
 275     p_mi->drawable.agl = 0;
 276     p_mi->drawable.xid = 0;
 277     p_mi->drawable.hwnd = NULL;
 278     p_mi->p_libvlc_instance = p_libvlc_instance;
 279     p_mi->p_input_thread = NULL;
 280     p_mi->i_refcount = 1;
 281     vlc_mutex_init( &p_mi->object_lock );
 282     p_mi->p_event_manager = libvlc_event_manager_new( p_mi,
 283             p_libvlc_instance, p_e );
 284     if( libvlc_exception_raised( p_e ) )
 285     {
 286         vlc_mutex_destroy( &p_mi->object_lock );
 287         free( p_mi );
 288         return NULL;
 289     }
 290
 291     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 292             libvlc_MediaPlayerNothingSpecial, p_e );
 293     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 294             libvlc_MediaPlayerOpening, p_e );
 295     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 296             libvlc_MediaPlayerBuffering, p_e );
 297     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 298             libvlc_MediaPlayerPlaying, p_e );
 299     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 300             libvlc_MediaPlayerPaused, p_e );
 301     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 302             libvlc_MediaPlayerStopped, p_e );
 303     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 304             libvlc_MediaPlayerForward, p_e );
 305     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 306             libvlc_MediaPlayerBackward, p_e );
 307     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 308             libvlc_MediaPlayerEndReached, p_e );
 309     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 310             libvlc_MediaPlayerEncounteredError, p_e );
 311
 312     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 313             libvlc_MediaPlayerPositionChanged, p_e );
 314     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 315             libvlc_MediaPlayerTimeChanged, p_e );
 316     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 317             libvlc_MediaPlayerTitleChanged, p_e );
 318     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 319             libvlc_MediaPlayerSeekableChanged, p_e );
 320     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 321             libvlc_MediaPlayerPausableChanged, p_e );
 322
 323     /* Snapshot initialization */
 324     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 325            libvlc_MediaPlayerSnapshotTaken, p_e );
 326
 327     /* Attach a var callback to the global object to provide the glue between
 328         vout_thread that generates the event and media_player that re-emits it
 329         with its own event manager
 330     */
 331     var_Create( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 332                 VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 333     var_AddCallback( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 334                      SnapshotTakenCallback, p_mi );
 335
 336     return p_mi;
 337 }
 338
 339 /**************************************************************************
 340  * Create a Media Instance object with a media descriptor.
 341  **************************************************************************/
 342 libvlc_media_player_t *
 343 libvlc_media_player_new_from_media(
 344                                     libvlc_media_t * p_md,
 345                                     libvlc_exception_t *p_e )
 346 {
 347     libvlc_media_player_t * p_mi;
 348
 349     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance, p_e );
 350     if( !p_mi )
 351         return NULL;
 352
 353     libvlc_media_retain( p_md );
 354     p_mi->p_md = p_md;
 355
 356     return p_mi;
 357 }
 358
 359 /**************************************************************************
 360  * Destroy a Media Instance object (libvlc internal)
 361  *
 362  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 363  **************************************************************************/
 364 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 365 {
 366     input_thread_t *p_input_thread;
 367     libvlc_exception_t p_e;
 368
 369     assert( p_mi );
 370
 371     /* Detach Callback from the main libvlc object */
 372     var_DelCallback( p_mi->p_libvlc_instance->p_libvlc_int,
 373                      "vout-snapshottaken", SnapshotTakenCallback, p_mi );
 374
 375     libvlc_exception_init( &p_e );
 376     p_input_thread = libvlc_get_input_thread( p_mi, &p_e );
 377
 378     if( libvlc_exception_raised( &p_e ) )
 379         /* no need to worry about no input thread */
 380         libvlc_exception_clear( &p_e );
 381     else
 382         release_input_thread( p_mi, true );
 383
 384     libvlc_event_manager_release( p_mi->p_event_manager );
 385     if( p_mi->p_md )
 386         libvlc_media_release( p_mi->p_md );
 387     vlc_mutex_destroy( &p_mi->object_lock );
 388     free( p_mi );
 389 }
 390
 391 /**************************************************************************
 392  * Release a Media Instance object.
 393  *
 394  * Function does the locking.
 395  **************************************************************************/
 396 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 397 {
 398     bool destroy;
 399
 400     assert( p_mi );
 401     vlc_mutex_lock( &p_mi->object_lock );
 402     destroy = !--p_mi->i_refcount;
 403     vlc_mutex_unlock( &p_mi->object_lock );
 404
 405     if( destroy )
 406         libvlc_media_player_destroy( p_mi );
 407 }
 408
 409 /**************************************************************************
 410  * Retain a Media Instance object.
 411  *
 412  * Caller must hold the lock.
 413  **************************************************************************/
 414 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 415 {
 416     if( !p_mi )
 417         return;
 418
 419     p_mi->i_refcount++;
 420 }
 421
 422 /**************************************************************************
 423  * Set the Media descriptor associated with the instance.
 424  *
 425  * Enter without lock -- function will lock the object.
 426  **************************************************************************/
 427 void libvlc_media_player_set_media(
 428                             libvlc_media_player_t *p_mi,
 429                             libvlc_media_t *p_md,
 430                             libvlc_exception_t *p_e )
 431 {
 432     VLC_UNUSED(p_e);
 433
 434     if( !p_mi )
 435         return;
 436
 437     vlc_mutex_lock( &p_mi->object_lock );
 438
 439     /* FIXME I am not sure if it is a user request or on die(eof/error)
 440      * request here */
 441     release_input_thread( p_mi,
 442                           p_mi->p_input_thread &&
 443                           !p_mi->p_input_thread->b_eof &&
 444                           !p_mi->p_input_thread->b_error );
 445
 446     if( p_mi->p_md )
 447         libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, p_e );
 448
 449     libvlc_media_release( p_mi->p_md );
 450
 451     if( !p_md )
 452     {
 453         p_mi->p_md = NULL;
 454         vlc_mutex_unlock( &p_mi->object_lock );
 455         return; /* It is ok to pass a NULL md */
 456     }
 457
 458     libvlc_media_retain( p_md );
 459     p_mi->p_md = p_md;
 460
 461     /* The policy here is to ignore that we were created using a different
 462      * libvlc_instance, because we don't really care */
 463     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 464
 465     vlc_mutex_unlock( &p_mi->object_lock );
 466 }
 467
 468 /**************************************************************************
 469  * Get the Media descriptor associated with the instance.
 470  **************************************************************************/
 471 libvlc_media_t *
 472 libvlc_media_player_get_media(
 473                             libvlc_media_player_t *p_mi,
 474                             libvlc_exception_t *p_e )
 475 {
 476     VLC_UNUSED(p_e);
 477
 478     if( !p_mi->p_md )
 479         return NULL;
 480
 481     libvlc_media_retain( p_mi->p_md );
 482     return p_mi->p_md;
 483 }
 484
 485 /**************************************************************************
 486  * Get the event Manager.
 487  **************************************************************************/
 488 libvlc_event_manager_t *
 489 libvlc_media_player_event_manager(
 490                             libvlc_media_player_t *p_mi,
 491                             libvlc_exception_t *p_e )
 492 {
 493     VLC_UNUSED(p_e);
 494
 495     return p_mi->p_event_manager;
 496 }
 497
 498 /**************************************************************************
 499  * Trigger a snapshot Taken Event.
 500  *************************************************************************/
 501 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
 502                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 503 {
 504     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
 505     VLC_UNUSED(p_this) ;
 506
 507     libvlc_media_player_t* p_mi = (libvlc_media_player_t*) p_data ;
 508     libvlc_event_t event ;
 509     event.type = libvlc_MediaPlayerSnapshotTaken ;
 510     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string ;
 511     /* Snapshot psz data is a vlc_variable owned by libvlc object .
 512          Its memmory management is taken care by the obj*/
 513     msg_Dbg( p_this, "about to emit libvlc_snapshot_taken.make psz_str=0x%p"
 514              " (%s)", event.u.media_player_snapshot_taken.psz_filename,
 515              event.u.media_player_snapshot_taken.psz_filename );
 516     libvlc_event_send( p_mi->p_event_manager, &event );
 517
 518     return VLC_SUCCESS;
 519 }
 520
 521 /**************************************************************************
 522  * Tell media player to start playing.
 523  **************************************************************************/
 524 void libvlc_media_player_play( libvlc_media_player_t *p_mi,
 525                                  libvlc_exception_t *p_e )
 526 {
 527     input_thread_t * p_input_thread;
 528
 529     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 530     {
 531         /* A thread already exists, send it a play message */
 532         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 533         vlc_object_release( p_input_thread );
 534         return;
 535     }
 536
 537     /* Ignore previous exception */
 538     libvlc_exception_clear( p_e );
 539
 540     vlc_mutex_lock( &p_mi->object_lock );
 541
 542     if( !p_mi->p_md )
 543     {
 544         libvlc_exception_raise( p_e, "no associated media descriptor" );
 545         vlc_mutex_unlock( &p_mi->object_lock );
 546         return;
 547     }
 548
 549     p_mi->p_input_thread = input_Create( p_mi->p_libvlc_instance->p_libvlc_int,
 550                                          p_mi->p_md->p_input_item, NULL, NULL );
 551
 552     if( !p_mi->p_input_thread )
 553     {
 554         vlc_mutex_unlock( &p_mi->object_lock );
 555         return;
 556     }
 557
 558     p_input_thread = p_mi->p_input_thread;
 559
 560     var_Create( p_input_thread, "drawable-agl", VLC_VAR_INTEGER );
 561     if( p_mi->drawable.agl )
 562         var_SetInteger( p_input_thread, "drawable-agl", p_mi->drawable.agl );
 563
 564     var_Create( p_input_thread, "drawable-xid", VLC_VAR_INTEGER );
 565     if( p_mi->drawable.xid )
 566         var_SetInteger( p_input_thread, "drawable-xid", p_mi->drawable.xid );
 567
 568     var_Create( p_input_thread, "drawable-hwnd", VLC_VAR_ADDRESS );
 569     if( p_mi->drawable.hwnd != NULL )
 570     {
 571         vlc_value_t val = { .p_address = p_mi->drawable.hwnd };
 572         var_Set( p_input_thread, "drawable-hwnd", val );
 573     }
 574
 575         var_Create( p_input_thread, "drawable-nsobject", VLC_VAR_ADDRESS );
 576     if( p_mi->drawable.nsobject != NULL )
 577     {
 578         vlc_value_t val = { .p_address = p_mi->drawable.nsobject };
 579         var_Set( p_input_thread, "drawable-nsobject", val );
 580     }
 581
 582     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 583     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 584     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 585
 586     if( input_Start( p_input_thread ) )
 587     {
 588         vlc_object_release( p_input_thread );
 589         p_mi->p_input_thread = NULL;
 590     }
 591
 592     vlc_mutex_unlock( &p_mi->object_lock );
 593 }
 594
 595 /**************************************************************************
 596  * Pause.
 597  **************************************************************************/
 598 void libvlc_media_player_pause( libvlc_media_player_t *p_mi,
 599                                   libvlc_exception_t *p_e )
 600 {
 601     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 602     if( !p_input_thread )
 603         return;
 604
 605     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 606     if( state == libvlc_Playing || state == libvlc_Buffering )
 607     {
 608         if( libvlc_media_player_can_pause( p_mi, p_e ) )
 609             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 610         else
 611             libvlc_media_player_stop( p_mi, p_e );
 612     }
 613     else
 614         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 615
 616     vlc_object_release( p_input_thread );
 617 }
 618
 619 /**************************************************************************
 620  * Tells whether the media player is currently playing.
 621  *
 622  * Enter with lock held.
 623  **************************************************************************/
 624 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi,
 625                                      libvlc_exception_t *p_e )
 626 {
 627     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 628     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 629 }
 630
 631 /**************************************************************************
 632  * Stop playing.
 633  **************************************************************************/
 634 void libvlc_media_player_stop( libvlc_media_player_t *p_mi,
 635                                  libvlc_exception_t *p_e )
 636 {
 637     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 638
 639     if( state == libvlc_Playing ||
 640         state == libvlc_Paused ||
 641         state == libvlc_Buffering )
 642     {
 643         /* Send a stop notification event only if we are in playing,
 644          * buffering or paused states */
 645         libvlc_media_set_state( p_mi->p_md, libvlc_Ended, p_e );
 646
 647         /* Construct and send the event */
 648         libvlc_event_t event;
 649         event.type = libvlc_MediaPlayerStopped;
 650         libvlc_event_send( p_mi->p_event_manager, &event );
 651     }
 652
 653     vlc_mutex_lock( &p_mi->object_lock );
 654     release_input_thread( p_mi, true ); /* This will stop the input thread */
 655     vlc_mutex_unlock( &p_mi->object_lock );
 656 }
 657
 658 /**************************************************************************
 659  * set_nsobject
 660  **************************************************************************/
 661 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 662                                         void * drawable,
 663                                         libvlc_exception_t *p_e )
 664 {
 665     (void) p_e;
 666     p_mi->drawable.nsobject = drawable;
 667 }
 668
 669 /**************************************************************************
 670  * get_nsobject
 671  **************************************************************************/
 672 uint32_t libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 673 {
 674     return p_mi->drawable.nsobject;
 675 }
 676
 677 /**************************************************************************
 678  * set_agl
 679  **************************************************************************/
 680 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 681                                       uint32_t drawable,
 682                                       libvlc_exception_t *p_e )
 683 {
 684     (void) p_e;
 685     p_mi->drawable.agl = drawable;
 686 }
 687
 688 /**************************************************************************
 689  * get_agl
 690  **************************************************************************/
 691 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 692 {
 693     return p_mi->drawable.agl;
 694 }
 695
 696 /**************************************************************************
 697  * set_xwindow
 698  **************************************************************************/
 699 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 700                                       uint32_t drawable,
 701                                       libvlc_exception_t *p_e )
 702 {
 703     (void) p_e;
 704     p_mi->drawable.xid = drawable;
 705 }
 706
 707 /**************************************************************************
 708  * get_xwindow
 709  **************************************************************************/
 710 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 711 {
 712     return p_mi->drawable.xid;
 713 }
 714
 715 /**************************************************************************
 716  * set_hwnd
 717  **************************************************************************/
 718 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 719                                    void *drawable,
 720                                    libvlc_exception_t *p_e )
 721 {
 722     (void) p_e;
 723     p_mi->drawable.hwnd = drawable;
 724 }
 725
 726 /**************************************************************************
 727  * get_hwnd
 728  **************************************************************************/
 729 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 730 {
 731     return p_mi->drawable.hwnd;
 732 }
 733
 734 /**************************************************************************
 735  * Set Drawable
 736  **************************************************************************/
 737 void libvlc_media_player_set_drawable( libvlc_media_player_t *p_mi,
 738                                        libvlc_drawable_t drawable,
 739                                        libvlc_exception_t *p_e )
 740 {
 741 #ifdef WIN32
 742     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 743         p_mi->drawable.hwnd = (HWND)drawable;
 744     else
 745         libvlc_exception_raise(p_e, "Operation not supported");
 746 #elif defined(__APPLE__)
 747     p_mi->drawable.agl = drawable;
 748     (void) p_e;
 749 #else
 750     p_mi->drawable.xid = drawable;
 751     (void) p_e;
 752 #endif
 753 }
 754
 755 /**************************************************************************
 756  * Get Drawable
 757  **************************************************************************/
 758 libvlc_drawable_t
 759 libvlc_media_player_get_drawable ( libvlc_media_player_t *p_mi,
 760                                    libvlc_exception_t *p_e )
 761 {
 762     VLC_UNUSED(p_e);
 763
 764 #ifdef WIN32
 765     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 766         return (libvlc_drawable_t)p_mi->drawable.hwnd;
 767     else
 768         return 0;
 769 #elif defined(__APPLE__)
 770     return p_mi->drawable.agl;
 771 #else
 772     return p_mi->drawable.xid;
 773 #endif
 774 }
 775
 776 /**************************************************************************
 777  * Getters for stream information
 778  **************************************************************************/
 779 libvlc_time_t libvlc_media_player_get_length(
 780                              libvlc_media_player_t *p_mi,
 781                              libvlc_exception_t *p_e )
 782 {
 783     input_thread_t *p_input_thread;
 784     vlc_value_t val;
 785
 786     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 787     if( !p_input_thread )
 788         return -1;
 789
 790     var_Get( p_input_thread, "length", &val );
 791     vlc_object_release( p_input_thread );
 792
 793     return (val.i_time+500LL)/1000LL;
 794 }
 795
 796 libvlc_time_t libvlc_media_player_get_time(
 797                                    libvlc_media_player_t *p_mi,
 798                                    libvlc_exception_t *p_e )
 799 {
 800     input_thread_t *p_input_thread;
 801     vlc_value_t val;
 802
 803     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 804     if( !p_input_thread )
 805         return -1;
 806
 807     var_Get( p_input_thread , "time", &val );
 808     vlc_object_release( p_input_thread );
 809     return (val.i_time+500LL)/1000LL;
 810 }
 811
 812 void libvlc_media_player_set_time(
 813                                  libvlc_media_player_t *p_mi,
 814                                  libvlc_time_t time,
 815                                  libvlc_exception_t *p_e )
 816 {
 817     input_thread_t *p_input_thread;
 818
 819     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 820     if( !p_input_thread )
 821         return;
 822
 823     var_SetTime( p_input_thread, "time", time*1000LL );
 824     vlc_object_release( p_input_thread );
 825 }
 826
 827 void libvlc_media_player_set_position(
 828                                 libvlc_media_player_t *p_mi,
 829                                 float position,
 830                                 libvlc_exception_t *p_e )
 831 {
 832     input_thread_t *p_input_thread;
 833
 834     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 835     if( !p_input_thread )
 836         return;
 837
 838     var_SetFloat( p_input_thread, "position", position );
 839     vlc_object_release( p_input_thread );
 840 }
 841
 842 float libvlc_media_player_get_position(
 843                                  libvlc_media_player_t *p_mi,
 844                                  libvlc_exception_t *p_e )
 845 {
 846     input_thread_t *p_input_thread;
 847     vlc_value_t val;
 848
 849     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 850     if( !p_input_thread )
 851         return -1.0;
 852
 853     var_Get( p_input_thread, "position", &val );
 854     vlc_object_release( p_input_thread );
 855
 856     return val.f_float;
 857 }
 858
 859 void libvlc_media_player_set_chapter(
 860                                  libvlc_media_player_t *p_mi,
 861                                  int chapter,
 862                                  libvlc_exception_t *p_e )
 863 {
 864     input_thread_t *p_input_thread;
 865
 866     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 867     if( !p_input_thread )
 868         return;
 869
 870     var_SetInteger( p_input_thread, "chapter", chapter );
 871     vlc_object_release( p_input_thread );
 872 }
 873
 874 int libvlc_media_player_get_chapter(
 875                                  libvlc_media_player_t *p_mi,
 876                                  libvlc_exception_t *p_e )
 877 {
 878     input_thread_t *p_input_thread;
 879     vlc_value_t val;
 880
 881     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 882     if( !p_input_thread )
 883         return -1;
 884
 885     var_Get( p_input_thread, "chapter", &val );
 886     vlc_object_release( p_input_thread );
 887
 888     return val.i_int;
 889 }
 890
 891 int libvlc_media_player_get_chapter_count(
 892                                  libvlc_media_player_t *p_mi,
 893                                  libvlc_exception_t *p_e )
 894 {
 895     input_thread_t *p_input_thread;
 896     vlc_value_t val;
 897
 898     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 899     if( !p_input_thread )
 900         return -1;
 901
 902     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 903     vlc_object_release( p_input_thread );
 904
 905     return val.i_int;
 906 }
 907
 908 int libvlc_media_player_get_chapter_count_for_title(
 909                                  libvlc_media_player_t *p_mi,
 910                                  int i_title,
 911                                  libvlc_exception_t *p_e )
 912 {
 913     input_thread_t *p_input_thread;
 914     vlc_value_t val;
 915
 916     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 917     if( !p_input_thread )
 918         return -1;
 919
 920     char *psz_name;
 921     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 922     {
 923         vlc_object_release( p_input_thread );
 924         return -1;
 925     }
 926     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 927     vlc_object_release( p_input_thread );
 928     free( psz_name );
 929
 930     return val.i_int;
 931 }
 932
 933 void libvlc_media_player_set_title(
 934                                  libvlc_media_player_t *p_mi,
 935                                  int i_title,
 936                                  libvlc_exception_t *p_e )
 937 {
 938     input_thread_t *p_input_thread;
 939
 940     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 941     if( !p_input_thread )
 942         return;
 943
 944     var_SetInteger( p_input_thread, "title", i_title );
 945     vlc_object_release( p_input_thread );
 946
 947     //send event
 948     libvlc_event_t event;
 949     event.type = libvlc_MediaPlayerTitleChanged;
 950     event.u.media_player_title_changed.new_title = i_title;
 951     libvlc_event_send( p_mi->p_event_manager, &event );
 952 }
 953
 954 int libvlc_media_player_get_title(
 955                                  libvlc_media_player_t *p_mi,
 956                                  libvlc_exception_t *p_e )
 957 {
 958     input_thread_t *p_input_thread;
 959     vlc_value_t val;
 960
 961     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 962     if( !p_input_thread )
 963         return -1;
 964
 965     var_Get( p_input_thread, "title", &val );
 966     vlc_object_release( p_input_thread );
 967
 968     return val.i_int;
 969 }
 970
 971 int libvlc_media_player_get_title_count(
 972                                  libvlc_media_player_t *p_mi,
 973                                  libvlc_exception_t *p_e )
 974 {
 975     input_thread_t *p_input_thread;
 976     vlc_value_t val;
 977
 978     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 979     if( !p_input_thread )
 980         return -1;
 981
 982     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
 983     vlc_object_release( p_input_thread );
 984
 985     return val.i_int;
 986 }
 987
 988 void libvlc_media_player_next_chapter(
 989                                  libvlc_media_player_t *p_mi,
 990                                  libvlc_exception_t *p_e )
 991 {
 992     input_thread_t *p_input_thread;
 993
 994     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 995     if( !p_input_thread )
 996         return;
 997
 998     int i_type = var_Type( p_input_thread, "next-chapter" );
 999     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1000                             "next-chapter":"next-title", true );
1001
1002     vlc_object_release( p_input_thread );
1003 }
1004
1005 void libvlc_media_player_previous_chapter(
1006                                  libvlc_media_player_t *p_mi,
1007                                  libvlc_exception_t *p_e )
1008 {
1009     input_thread_t *p_input_thread;
1010
1011     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1012     if( !p_input_thread )
1013         return;
1014
1015     int i_type = var_Type( p_input_thread, "next-chapter" );
1016     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1017                             "prev-chapter":"prev-title", true );
1018
1019     vlc_object_release( p_input_thread );
1020 }
1021
1022 float libvlc_media_player_get_fps(
1023                                  libvlc_media_player_t *p_mi,
1024                                  libvlc_exception_t *p_e)
1025 {
1026     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1027     double f_fps = 0.0;
1028
1029     if( p_input_thread )
1030     {
1031         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1032             f_fps = 0.0;
1033         vlc_object_release( p_input_thread );
1034     }
1035     return f_fps;
1036 }
1037
1038 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi,
1039                                      libvlc_exception_t *p_e)
1040 {
1041     input_thread_t *p_input_thread =
1042                             libvlc_get_input_thread ( p_mi, p_e);
1043     if ( !p_input_thread )
1044         return false;
1045
1046     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
1047     {
1048         vlc_object_release( p_input_thread );
1049         return true;
1050     }
1051     vlc_object_release( p_input_thread );
1052     return false;
1053 }
1054
1055 void libvlc_media_player_set_rate(
1056                                  libvlc_media_player_t *p_mi,
1057                                  float rate,
1058                                  libvlc_exception_t *p_e )
1059 {
1060     input_thread_t *p_input_thread;
1061     bool b_can_rewind;
1062
1063     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1064     if( !p_input_thread )
1065         return;
1066
1067     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1068     if( (rate < 0.0) && !b_can_rewind )
1069     {
1070         vlc_object_release( p_input_thread );
1071         libvlc_exception_raise( p_e, "Rate value is invalid" );
1072         return;
1073     }
1074
1075     var_SetInteger( p_input_thread, "rate", 1000.0f/rate );
1076     vlc_object_release( p_input_thread );
1077 }
1078
1079 float libvlc_media_player_get_rate(
1080                                  libvlc_media_player_t *p_mi,
1081                                  libvlc_exception_t *p_e )
1082 {
1083     input_thread_t *p_input_thread;
1084     vlc_value_t val;
1085     bool b_can_rewind;
1086
1087     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1088     if( !p_input_thread )
1089         return 0.0;  /* rate < 0 indicates rewind */
1090
1091     var_Get( p_input_thread, "rate", &val );
1092     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1093     if( (val.i_int < 0) && !b_can_rewind )
1094     {
1095         libvlc_exception_raise( p_e, "invalid rate" );
1096         return 0.0;
1097     }
1098     vlc_object_release( p_input_thread );
1099
1100     return (float)1000.0f/val.i_int;
1101 }
1102
1103 libvlc_state_t libvlc_media_player_get_state(
1104                                  libvlc_media_player_t *p_mi,
1105                                  libvlc_exception_t *p_e )
1106 {
1107     input_thread_t *p_input_thread;
1108     libvlc_state_t state = libvlc_Ended;
1109     vlc_value_t val;
1110
1111     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1112     if( !p_input_thread )
1113     {
1114         /* We do return the right value, no need to throw an exception */
1115         if( libvlc_exception_raised( p_e ) )
1116             libvlc_exception_clear( p_e );
1117         return state;
1118     }
1119
1120     var_Get( p_input_thread, "state", &val );
1121     state = vlc_to_libvlc_state(val.i_int);
1122
1123     if( state == libvlc_Playing )
1124     {
1125         float caching;
1126         caching = var_GetFloat( p_input_thread, "cache" );
1127         if( caching > 0.0 && caching < 1.0 )
1128             state = libvlc_Buffering;
1129     }
1130     vlc_object_release( p_input_thread );
1131     return state;
1132 }
1133
1134 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi,
1135                                        libvlc_exception_t *p_e )
1136 {
1137     input_thread_t *p_input_thread;
1138     vlc_value_t val;
1139
1140     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1141     if ( !p_input_thread )
1142     {
1143         /* We do return the right value, no need to throw an exception */
1144         if( libvlc_exception_raised( p_e ) )
1145             libvlc_exception_clear( p_e );
1146         return false;
1147     }
1148     var_Get( p_input_thread, "can-seek", &val );
1149     vlc_object_release( p_input_thread );
1150
1151     return val.b_bool;
1152 }
1153
1154 /* internal function, used by audio, video */
1155 libvlc_track_description_t *
1156         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1157                                       const char *psz_variable,
1158                                       libvlc_exception_t *p_e )
1159 {
1160     input_thread_t *p_input = libvlc_get_input_thread( p_mi, p_e );
1161
1162     if( !p_input )
1163         return NULL;
1164
1165     vlc_value_t val_list, text_list;
1166     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1167
1168     if( val_list.p_list->i_count <= 0 ) /* no tracks */
1169         return NULL;
1170
1171     libvlc_track_description_t *p_track_description, *p_actual, *p_previous;
1172     p_track_description = ( libvlc_track_description_t * )
1173         malloc( sizeof( libvlc_track_description_t ) );
1174     if ( !p_track_description )
1175     {
1176         var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1177                     &val_list, &text_list);
1178         vlc_object_release( p_input );
1179         libvlc_exception_raise( p_e, "no enough memory" );
1180         return NULL;
1181     }
1182     p_actual = p_track_description;
1183     p_previous = NULL;
1184     for( int i = 0; i < val_list.p_list->i_count; i++ )
1185     {
1186         if( !p_actual )
1187         {
1188             p_actual = ( libvlc_track_description_t * )
1189                 malloc( sizeof( libvlc_track_description_t ) );
1190             if ( !p_actual )
1191             {
1192                 libvlc_track_description_release( p_track_description );
1193                 var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1194                             &val_list, &text_list);
1195                 vlc_object_release( p_input );
1196                 libvlc_exception_raise( p_e, "no enough memory" );
1197                 return NULL;
1198             }
1199         }
1200         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1201         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1202         p_actual->p_next = NULL;
1203         if( p_previous )
1204             p_previous->p_next = p_actual;
1205         p_previous = p_actual;
1206         p_actual =  NULL;
1207     }
1208     var_Change( p_input, psz_variable, VLC_VAR_FREELIST, &val_list, &text_list);
1209     vlc_object_release( p_input );
1210
1211     return p_track_description;
1212 }
1213
1214 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1215 {
1216     libvlc_track_description_t *p_actual, *p_before;
1217     p_actual = p_td;
1218
1219     while ( p_actual )
1220     {
1221         free( p_actual->psz_name );
1222         p_before = p_actual;
1223         p_actual = p_before->p_next;
1224         free( p_before );
1225     }
1226 }
1227
1228 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi,
1229                                      libvlc_exception_t *p_e )
1230 {
1231     input_thread_t *p_input_thread;
1232     vlc_value_t val;
1233
1234     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1235     if ( !p_input_thread )
1236     {
1237         /* We do return the right value, no need to throw an exception */
1238         if( libvlc_exception_raised( p_e ) )
1239             libvlc_exception_clear( p_e );
1240         return false;
1241     }
1242     var_Get( p_input_thread, "can-pause", &val );
1243     vlc_object_release( p_input_thread );
1244
1245     return val.b_bool;
1246 }