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     else if( newval.i_int == INPUT_EVENT_LENGTH )
 236     {
 237         event.type = libvlc_MediaPlayerLengthChanged;
 238         event.u.media_player_length_changed.new_length =
 239                                                var_GetTime( p_input, "length" );
 240         libvlc_event_send( p_mi->p_event_manager, &event );
 241     }
 242
 243     return VLC_SUCCESS;
 244
 245 }
 246
 247 static void libvlc_media_player_destroy( libvlc_media_player_t * );
 248
 249 /**************************************************************************
 250  * Create a Media Instance object.
 251  *
 252  * Refcount strategy:
 253  * - All items created by _new start with a refcount set to 1.
 254  * - Accessor _release decrease the refcount by 1, if after that
 255  *   operation the refcount is 0, the object is destroyed.
 256  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 257  *
 258  * Object locking strategy:
 259  * - No lock held while in constructor.
 260  * - When accessing any member variable this lock is held. (XXX who locks?)
 261  * - When attempting to destroy the object the lock is also held.
 262  **************************************************************************/
 263 libvlc_media_player_t *
 264 libvlc_media_player_new( libvlc_instance_t * p_libvlc_instance,
 265                            libvlc_exception_t * p_e )
 266 {
 267     libvlc_media_player_t * p_mi;
 268
 269     if( !p_libvlc_instance )
 270     {
 271         libvlc_exception_raise( p_e, "invalid libvlc instance" );
 272         return NULL;
 273     }
 274
 275     p_mi = malloc( sizeof(libvlc_media_player_t) );
 276     if( !p_mi )
 277     {
 278         libvlc_exception_raise( p_e, "Not enough memory" );
 279         return NULL;
 280     }
 281     p_mi->p_md = NULL;
 282     p_mi->drawable.agl = 0;
 283     p_mi->drawable.xid = 0;
 284     p_mi->drawable.hwnd = NULL;
 285     p_mi->p_libvlc_instance = p_libvlc_instance;
 286     p_mi->p_input_thread = NULL;
 287     p_mi->i_refcount = 1;
 288     vlc_mutex_init( &p_mi->object_lock );
 289     p_mi->p_event_manager = libvlc_event_manager_new( p_mi,
 290             p_libvlc_instance, p_e );
 291     if( libvlc_exception_raised( p_e ) )
 292     {
 293         vlc_mutex_destroy( &p_mi->object_lock );
 294         free( p_mi );
 295         return NULL;
 296     }
 297
 298     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 299             libvlc_MediaPlayerNothingSpecial, p_e );
 300     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 301             libvlc_MediaPlayerOpening, p_e );
 302     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 303             libvlc_MediaPlayerBuffering, p_e );
 304     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 305             libvlc_MediaPlayerPlaying, p_e );
 306     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 307             libvlc_MediaPlayerPaused, p_e );
 308     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 309             libvlc_MediaPlayerStopped, p_e );
 310     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 311             libvlc_MediaPlayerForward, p_e );
 312     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 313             libvlc_MediaPlayerBackward, p_e );
 314     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 315             libvlc_MediaPlayerEndReached, p_e );
 316     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 317             libvlc_MediaPlayerEncounteredError, p_e );
 318
 319     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 320             libvlc_MediaPlayerPositionChanged, p_e );
 321     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 322             libvlc_MediaPlayerTimeChanged, p_e );
 323     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 324             libvlc_MediaPlayerLengthChanged, p_e );
 325     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 326             libvlc_MediaPlayerTitleChanged, p_e );
 327     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 328             libvlc_MediaPlayerSeekableChanged, p_e );
 329     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 330             libvlc_MediaPlayerPausableChanged, p_e );
 331
 332     /* Snapshot initialization */
 333     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 334            libvlc_MediaPlayerSnapshotTaken, p_e );
 335
 336     /* Attach a var callback to the global object to provide the glue between
 337         vout_thread that generates the event and media_player that re-emits it
 338         with its own event manager
 339     */
 340     var_Create( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 341                 VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 342     var_AddCallback( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 343                      SnapshotTakenCallback, p_mi );
 344
 345     return p_mi;
 346 }
 347
 348 /**************************************************************************
 349  * Create a Media Instance object with a media descriptor.
 350  **************************************************************************/
 351 libvlc_media_player_t *
 352 libvlc_media_player_new_from_media(
 353                                     libvlc_media_t * p_md,
 354                                     libvlc_exception_t *p_e )
 355 {
 356     libvlc_media_player_t * p_mi;
 357
 358     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance, p_e );
 359     if( !p_mi )
 360         return NULL;
 361
 362     libvlc_media_retain( p_md );
 363     p_mi->p_md = p_md;
 364
 365     return p_mi;
 366 }
 367
 368 /**************************************************************************
 369  * Destroy a Media Instance object (libvlc internal)
 370  *
 371  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 372  **************************************************************************/
 373 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 374 {
 375     input_thread_t *p_input_thread;
 376     libvlc_exception_t p_e;
 377
 378     assert( p_mi );
 379
 380     /* Detach Callback from the main libvlc object */
 381     var_DelCallback( p_mi->p_libvlc_instance->p_libvlc_int,
 382                      "vout-snapshottaken", SnapshotTakenCallback, p_mi );
 383
 384     libvlc_exception_init( &p_e );
 385     p_input_thread = libvlc_get_input_thread( p_mi, &p_e );
 386
 387     if( libvlc_exception_raised( &p_e ) )
 388         /* no need to worry about no input thread */
 389         libvlc_exception_clear( &p_e );
 390     else
 391         release_input_thread( p_mi, true );
 392
 393     libvlc_event_manager_release( p_mi->p_event_manager );
 394     libvlc_media_release( p_mi->p_md );
 395     vlc_mutex_destroy( &p_mi->object_lock );
 396     free( p_mi );
 397 }
 398
 399 /**************************************************************************
 400  * Release a Media Instance object.
 401  *
 402  * Function does the locking.
 403  **************************************************************************/
 404 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 405 {
 406     bool destroy;
 407
 408     assert( p_mi );
 409     vlc_mutex_lock( &p_mi->object_lock );
 410     destroy = !--p_mi->i_refcount;
 411     vlc_mutex_unlock( &p_mi->object_lock );
 412
 413     if( destroy )
 414         libvlc_media_player_destroy( p_mi );
 415 }
 416
 417 /**************************************************************************
 418  * Retain a Media Instance object.
 419  *
 420  * Caller must hold the lock.
 421  **************************************************************************/
 422 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 423 {
 424     assert( p_mi );
 425
 426     vlc_mutex_lock( &p_mi->object_lock );
 427     p_mi->i_refcount++;
 428     vlc_mutex_unlock( &p_mi->object_lock );
 429 }
 430
 431 /**************************************************************************
 432  * Set the Media descriptor associated with the instance.
 433  *
 434  * Enter without lock -- function will lock the object.
 435  **************************************************************************/
 436 void libvlc_media_player_set_media(
 437                             libvlc_media_player_t *p_mi,
 438                             libvlc_media_t *p_md,
 439                             libvlc_exception_t *p_e )
 440 {
 441     VLC_UNUSED(p_e);
 442
 443     if( !p_mi )
 444         return;
 445
 446     vlc_mutex_lock( &p_mi->object_lock );
 447
 448     /* FIXME I am not sure if it is a user request or on die(eof/error)
 449      * request here */
 450     release_input_thread( p_mi,
 451                           p_mi->p_input_thread &&
 452                           !p_mi->p_input_thread->b_eof &&
 453                           !p_mi->p_input_thread->b_error );
 454
 455     if( p_mi->p_md )
 456         libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, p_e );
 457
 458     libvlc_media_release( p_mi->p_md );
 459
 460     if( !p_md )
 461     {
 462         p_mi->p_md = NULL;
 463         vlc_mutex_unlock( &p_mi->object_lock );
 464         return; /* It is ok to pass a NULL md */
 465     }
 466
 467     libvlc_media_retain( p_md );
 468     p_mi->p_md = p_md;
 469
 470     /* The policy here is to ignore that we were created using a different
 471      * libvlc_instance, because we don't really care */
 472     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 473
 474     vlc_mutex_unlock( &p_mi->object_lock );
 475 }
 476
 477 /**************************************************************************
 478  * Get the Media descriptor associated with the instance.
 479  **************************************************************************/
 480 libvlc_media_t *
 481 libvlc_media_player_get_media(
 482                             libvlc_media_player_t *p_mi,
 483                             libvlc_exception_t *p_e )
 484 {
 485     VLC_UNUSED(p_e);
 486
 487     if( !p_mi->p_md )
 488         return NULL;
 489
 490     libvlc_media_retain( p_mi->p_md );
 491     return p_mi->p_md;
 492 }
 493
 494 /**************************************************************************
 495  * Get the event Manager.
 496  **************************************************************************/
 497 libvlc_event_manager_t *
 498 libvlc_media_player_event_manager(
 499                             libvlc_media_player_t *p_mi,
 500                             libvlc_exception_t *p_e )
 501 {
 502     VLC_UNUSED(p_e);
 503
 504     return p_mi->p_event_manager;
 505 }
 506
 507 /**************************************************************************
 508  * Trigger a snapshot Taken Event.
 509  *************************************************************************/
 510 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
 511                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 512 {
 513     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
 514     VLC_UNUSED(p_this) ;
 515
 516     libvlc_media_player_t* p_mi = (libvlc_media_player_t*) p_data ;
 517     libvlc_event_t event ;
 518     event.type = libvlc_MediaPlayerSnapshotTaken ;
 519     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string ;
 520     /* Snapshot psz data is a vlc_variable owned by libvlc object .
 521          Its memmory management is taken care by the obj*/
 522     msg_Dbg( p_this, "about to emit libvlc_snapshot_taken.make psz_str=0x%p"
 523              " (%s)", event.u.media_player_snapshot_taken.psz_filename,
 524              event.u.media_player_snapshot_taken.psz_filename );
 525     libvlc_event_send( p_mi->p_event_manager, &event );
 526
 527     return VLC_SUCCESS;
 528 }
 529
 530 /**************************************************************************
 531  * Tell media player to start playing.
 532  **************************************************************************/
 533 void libvlc_media_player_play( libvlc_media_player_t *p_mi,
 534                                  libvlc_exception_t *p_e )
 535 {
 536     input_thread_t * p_input_thread;
 537
 538     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 539     {
 540         /* A thread already exists, send it a play message */
 541         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 542         vlc_object_release( p_input_thread );
 543         return;
 544     }
 545
 546     /* Ignore previous exception */
 547     libvlc_exception_clear( p_e );
 548
 549     vlc_mutex_lock( &p_mi->object_lock );
 550
 551     if( !p_mi->p_md )
 552     {
 553         libvlc_exception_raise( p_e, "no associated media descriptor" );
 554         vlc_mutex_unlock( &p_mi->object_lock );
 555         return;
 556     }
 557
 558     p_mi->p_input_thread = input_Create( p_mi->p_libvlc_instance->p_libvlc_int,
 559                                          p_mi->p_md->p_input_item, NULL, NULL );
 560
 561     if( !p_mi->p_input_thread )
 562     {
 563         vlc_mutex_unlock( &p_mi->object_lock );
 564         return;
 565     }
 566
 567     p_input_thread = p_mi->p_input_thread;
 568
 569     var_Create( p_input_thread, "drawable-agl", VLC_VAR_INTEGER );
 570     if( p_mi->drawable.agl )
 571         var_SetInteger( p_input_thread, "drawable-agl", p_mi->drawable.agl );
 572
 573     var_Create( p_input_thread, "drawable-xid", VLC_VAR_INTEGER );
 574     if( p_mi->drawable.xid )
 575         var_SetInteger( p_input_thread, "drawable-xid", p_mi->drawable.xid );
 576
 577     var_Create( p_input_thread, "drawable-hwnd", VLC_VAR_ADDRESS );
 578     if( p_mi->drawable.hwnd != NULL )
 579     {
 580         vlc_value_t val = { .p_address = p_mi->drawable.hwnd };
 581         var_Set( p_input_thread, "drawable-hwnd", val );
 582     }
 583
 584         var_Create( p_input_thread, "drawable-nsobject", VLC_VAR_ADDRESS );
 585     if( p_mi->drawable.nsobject != NULL )
 586     {
 587         vlc_value_t val = { .p_address = p_mi->drawable.nsobject };
 588         var_Set( p_input_thread, "drawable-nsobject", val );
 589     }
 590
 591     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 592     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 593     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 594
 595     if( input_Start( p_input_thread ) )
 596     {
 597         vlc_object_release( p_input_thread );
 598         p_mi->p_input_thread = NULL;
 599     }
 600
 601     vlc_mutex_unlock( &p_mi->object_lock );
 602 }
 603
 604 /**************************************************************************
 605  * Pause.
 606  **************************************************************************/
 607 void libvlc_media_player_pause( libvlc_media_player_t *p_mi,
 608                                   libvlc_exception_t *p_e )
 609 {
 610     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 611     if( !p_input_thread )
 612         return;
 613
 614     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 615     if( state == libvlc_Playing || state == libvlc_Buffering )
 616     {
 617         if( libvlc_media_player_can_pause( p_mi, p_e ) )
 618             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 619         else
 620             libvlc_media_player_stop( p_mi, p_e );
 621     }
 622     else
 623         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 624
 625     vlc_object_release( p_input_thread );
 626 }
 627
 628 /**************************************************************************
 629  * Tells whether the media player is currently playing.
 630  *
 631  * Enter with lock held.
 632  **************************************************************************/
 633 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi,
 634                                      libvlc_exception_t *p_e )
 635 {
 636     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 637     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 638 }
 639
 640 /**************************************************************************
 641  * Stop playing.
 642  **************************************************************************/
 643 void libvlc_media_player_stop( libvlc_media_player_t *p_mi,
 644                                  libvlc_exception_t *p_e )
 645 {
 646     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 647
 648     if( state == libvlc_Playing ||
 649         state == libvlc_Paused ||
 650         state == libvlc_Buffering )
 651     {
 652         /* Send a stop notification event only if we are in playing,
 653          * buffering or paused states */
 654         libvlc_media_set_state( p_mi->p_md, libvlc_Ended, p_e );
 655
 656         /* Construct and send the event */
 657         libvlc_event_t event;
 658         event.type = libvlc_MediaPlayerStopped;
 659         libvlc_event_send( p_mi->p_event_manager, &event );
 660     }
 661
 662     vlc_mutex_lock( &p_mi->object_lock );
 663     release_input_thread( p_mi, true ); /* This will stop the input thread */
 664     vlc_mutex_unlock( &p_mi->object_lock );
 665 }
 666
 667 /**************************************************************************
 668  * set_nsobject
 669  **************************************************************************/
 670 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 671                                         void * drawable,
 672                                         libvlc_exception_t *p_e )
 673 {
 674     (void) p_e;
 675     p_mi->drawable.nsobject = drawable;
 676 }
 677
 678 /**************************************************************************
 679  * get_nsobject
 680  **************************************************************************/
 681 uint32_t libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 682 {
 683     return p_mi->drawable.nsobject;
 684 }
 685
 686 /**************************************************************************
 687  * set_agl
 688  **************************************************************************/
 689 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 690                                       uint32_t drawable,
 691                                       libvlc_exception_t *p_e )
 692 {
 693     (void) p_e;
 694     p_mi->drawable.agl = drawable;
 695 }
 696
 697 /**************************************************************************
 698  * get_agl
 699  **************************************************************************/
 700 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 701 {
 702     return p_mi->drawable.agl;
 703 }
 704
 705 /**************************************************************************
 706  * set_xwindow
 707  **************************************************************************/
 708 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 709                                       uint32_t drawable,
 710                                       libvlc_exception_t *p_e )
 711 {
 712     (void) p_e;
 713     p_mi->drawable.xid = drawable;
 714 }
 715
 716 /**************************************************************************
 717  * get_xwindow
 718  **************************************************************************/
 719 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 720 {
 721     return p_mi->drawable.xid;
 722 }
 723
 724 /**************************************************************************
 725  * set_hwnd
 726  **************************************************************************/
 727 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 728                                    void *drawable,
 729                                    libvlc_exception_t *p_e )
 730 {
 731     (void) p_e;
 732     p_mi->drawable.hwnd = drawable;
 733 }
 734
 735 /**************************************************************************
 736  * get_hwnd
 737  **************************************************************************/
 738 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 739 {
 740     return p_mi->drawable.hwnd;
 741 }
 742
 743 /**************************************************************************
 744  * Set Drawable
 745  **************************************************************************/
 746 void libvlc_media_player_set_drawable( libvlc_media_player_t *p_mi,
 747                                        libvlc_drawable_t drawable,
 748                                        libvlc_exception_t *p_e )
 749 {
 750 #ifdef WIN32
 751     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 752         p_mi->drawable.hwnd = (HWND)drawable;
 753     else
 754         libvlc_exception_raise(p_e, "Operation not supported");
 755 #elif defined(__APPLE__)
 756     p_mi->drawable.agl = drawable;
 757     (void) p_e;
 758 #else
 759     p_mi->drawable.xid = drawable;
 760     (void) p_e;
 761 #endif
 762 }
 763
 764 /**************************************************************************
 765  * Get Drawable
 766  **************************************************************************/
 767 libvlc_drawable_t
 768 libvlc_media_player_get_drawable ( libvlc_media_player_t *p_mi,
 769                                    libvlc_exception_t *p_e )
 770 {
 771     VLC_UNUSED(p_e);
 772
 773 #ifdef WIN32
 774     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 775         return (libvlc_drawable_t)p_mi->drawable.hwnd;
 776     else
 777         return 0;
 778 #elif defined(__APPLE__)
 779     return p_mi->drawable.agl;
 780 #else
 781     return p_mi->drawable.xid;
 782 #endif
 783 }
 784
 785 /**************************************************************************
 786  * Getters for stream information
 787  **************************************************************************/
 788 libvlc_time_t libvlc_media_player_get_length(
 789                              libvlc_media_player_t *p_mi,
 790                              libvlc_exception_t *p_e )
 791 {
 792     input_thread_t *p_input_thread;
 793     vlc_value_t val;
 794
 795     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 796     if( !p_input_thread )
 797         return -1;
 798
 799     var_Get( p_input_thread, "length", &val );
 800     vlc_object_release( p_input_thread );
 801
 802     return (val.i_time+500LL)/1000LL;
 803 }
 804
 805 libvlc_time_t libvlc_media_player_get_time(
 806                                    libvlc_media_player_t *p_mi,
 807                                    libvlc_exception_t *p_e )
 808 {
 809     input_thread_t *p_input_thread;
 810     vlc_value_t val;
 811
 812     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 813     if( !p_input_thread )
 814         return -1;
 815
 816     var_Get( p_input_thread , "time", &val );
 817     vlc_object_release( p_input_thread );
 818     return (val.i_time+500LL)/1000LL;
 819 }
 820
 821 void libvlc_media_player_set_time(
 822                                  libvlc_media_player_t *p_mi,
 823                                  libvlc_time_t time,
 824                                  libvlc_exception_t *p_e )
 825 {
 826     input_thread_t *p_input_thread;
 827
 828     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 829     if( !p_input_thread )
 830         return;
 831
 832     var_SetTime( p_input_thread, "time", time*1000LL );
 833     vlc_object_release( p_input_thread );
 834 }
 835
 836 void libvlc_media_player_set_position(
 837                                 libvlc_media_player_t *p_mi,
 838                                 float position,
 839                                 libvlc_exception_t *p_e )
 840 {
 841     input_thread_t *p_input_thread;
 842
 843     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 844     if( !p_input_thread )
 845         return;
 846
 847     var_SetFloat( p_input_thread, "position", position );
 848     vlc_object_release( p_input_thread );
 849 }
 850
 851 float libvlc_media_player_get_position(
 852                                  libvlc_media_player_t *p_mi,
 853                                  libvlc_exception_t *p_e )
 854 {
 855     input_thread_t *p_input_thread;
 856     vlc_value_t val;
 857
 858     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 859     if( !p_input_thread )
 860         return -1.0;
 861
 862     var_Get( p_input_thread, "position", &val );
 863     vlc_object_release( p_input_thread );
 864
 865     return val.f_float;
 866 }
 867
 868 void libvlc_media_player_set_chapter(
 869                                  libvlc_media_player_t *p_mi,
 870                                  int chapter,
 871                                  libvlc_exception_t *p_e )
 872 {
 873     input_thread_t *p_input_thread;
 874
 875     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 876     if( !p_input_thread )
 877         return;
 878
 879     var_SetInteger( p_input_thread, "chapter", chapter );
 880     vlc_object_release( p_input_thread );
 881 }
 882
 883 int libvlc_media_player_get_chapter(
 884                                  libvlc_media_player_t *p_mi,
 885                                  libvlc_exception_t *p_e )
 886 {
 887     input_thread_t *p_input_thread;
 888     vlc_value_t val;
 889
 890     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 891     if( !p_input_thread )
 892         return -1;
 893
 894     var_Get( p_input_thread, "chapter", &val );
 895     vlc_object_release( p_input_thread );
 896
 897     return val.i_int;
 898 }
 899
 900 int libvlc_media_player_get_chapter_count(
 901                                  libvlc_media_player_t *p_mi,
 902                                  libvlc_exception_t *p_e )
 903 {
 904     input_thread_t *p_input_thread;
 905     vlc_value_t val;
 906
 907     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 908     if( !p_input_thread )
 909         return -1;
 910
 911     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 912     vlc_object_release( p_input_thread );
 913
 914     return val.i_int;
 915 }
 916
 917 int libvlc_media_player_get_chapter_count_for_title(
 918                                  libvlc_media_player_t *p_mi,
 919                                  int i_title,
 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     char *psz_name;
 930     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 931     {
 932         vlc_object_release( p_input_thread );
 933         return -1;
 934     }
 935     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 936     vlc_object_release( p_input_thread );
 937     free( psz_name );
 938
 939     return val.i_int;
 940 }
 941
 942 void libvlc_media_player_set_title(
 943                                  libvlc_media_player_t *p_mi,
 944                                  int i_title,
 945                                  libvlc_exception_t *p_e )
 946 {
 947     input_thread_t *p_input_thread;
 948
 949     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 950     if( !p_input_thread )
 951         return;
 952
 953     var_SetInteger( p_input_thread, "title", i_title );
 954     vlc_object_release( p_input_thread );
 955
 956     //send event
 957     libvlc_event_t event;
 958     event.type = libvlc_MediaPlayerTitleChanged;
 959     event.u.media_player_title_changed.new_title = i_title;
 960     libvlc_event_send( p_mi->p_event_manager, &event );
 961 }
 962
 963 int libvlc_media_player_get_title(
 964                                  libvlc_media_player_t *p_mi,
 965                                  libvlc_exception_t *p_e )
 966 {
 967     input_thread_t *p_input_thread;
 968     vlc_value_t val;
 969
 970     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 971     if( !p_input_thread )
 972         return -1;
 973
 974     var_Get( p_input_thread, "title", &val );
 975     vlc_object_release( p_input_thread );
 976
 977     return val.i_int;
 978 }
 979
 980 int libvlc_media_player_get_title_count(
 981                                  libvlc_media_player_t *p_mi,
 982                                  libvlc_exception_t *p_e )
 983 {
 984     input_thread_t *p_input_thread;
 985     vlc_value_t val;
 986
 987     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 988     if( !p_input_thread )
 989         return -1;
 990
 991     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
 992     vlc_object_release( p_input_thread );
 993
 994     return val.i_int;
 995 }
 996
 997 void libvlc_media_player_next_chapter(
 998                                  libvlc_media_player_t *p_mi,
 999                                  libvlc_exception_t *p_e )
1000 {
1001     input_thread_t *p_input_thread;
1002
1003     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1004     if( !p_input_thread )
1005         return;
1006
1007     int i_type = var_Type( p_input_thread, "next-chapter" );
1008     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1009                             "next-chapter":"next-title", true );
1010
1011     vlc_object_release( p_input_thread );
1012 }
1013
1014 void libvlc_media_player_previous_chapter(
1015                                  libvlc_media_player_t *p_mi,
1016                                  libvlc_exception_t *p_e )
1017 {
1018     input_thread_t *p_input_thread;
1019
1020     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1021     if( !p_input_thread )
1022         return;
1023
1024     int i_type = var_Type( p_input_thread, "next-chapter" );
1025     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1026                             "prev-chapter":"prev-title", true );
1027
1028     vlc_object_release( p_input_thread );
1029 }
1030
1031 float libvlc_media_player_get_fps(
1032                                  libvlc_media_player_t *p_mi,
1033                                  libvlc_exception_t *p_e)
1034 {
1035     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1036     double f_fps = 0.0;
1037
1038     if( p_input_thread )
1039     {
1040         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1041             f_fps = 0.0;
1042         vlc_object_release( p_input_thread );
1043     }
1044     return f_fps;
1045 }
1046
1047 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi,
1048                                      libvlc_exception_t *p_e)
1049 {
1050     input_thread_t *p_input_thread =
1051                             libvlc_get_input_thread ( p_mi, p_e);
1052     if ( !p_input_thread )
1053         return false;
1054
1055     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
1056     {
1057         vlc_object_release( p_input_thread );
1058         return true;
1059     }
1060     vlc_object_release( p_input_thread );
1061     return false;
1062 }
1063
1064 void libvlc_media_player_set_rate(
1065                                  libvlc_media_player_t *p_mi,
1066                                  float rate,
1067                                  libvlc_exception_t *p_e )
1068 {
1069     input_thread_t *p_input_thread;
1070     bool b_can_rewind;
1071
1072     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1073     if( !p_input_thread )
1074         return;
1075
1076     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1077     if( (rate < 0.0) && !b_can_rewind )
1078     {
1079         vlc_object_release( p_input_thread );
1080         libvlc_exception_raise( p_e, "Rate value is invalid" );
1081         return;
1082     }
1083
1084     var_SetInteger( p_input_thread, "rate", 1000.0f/rate );
1085     vlc_object_release( p_input_thread );
1086 }
1087
1088 float libvlc_media_player_get_rate(
1089                                  libvlc_media_player_t *p_mi,
1090                                  libvlc_exception_t *p_e )
1091 {
1092     input_thread_t *p_input_thread;
1093     vlc_value_t val;
1094     bool b_can_rewind;
1095
1096     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1097     if( !p_input_thread )
1098         return 0.0;  /* rate < 0 indicates rewind */
1099
1100     var_Get( p_input_thread, "rate", &val );
1101     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1102     if( (val.i_int < 0) && !b_can_rewind )
1103     {
1104         libvlc_exception_raise( p_e, "invalid rate" );
1105         return 0.0;
1106     }
1107     vlc_object_release( p_input_thread );
1108
1109     return (float)1000.0f/val.i_int;
1110 }
1111
1112 libvlc_state_t libvlc_media_player_get_state(
1113                                  libvlc_media_player_t *p_mi,
1114                                  libvlc_exception_t *p_e )
1115 {
1116     input_thread_t *p_input_thread;
1117     libvlc_state_t state = libvlc_Ended;
1118     vlc_value_t val;
1119
1120     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1121     if( !p_input_thread )
1122     {
1123         /* We do return the right value, no need to throw an exception */
1124         if( libvlc_exception_raised( p_e ) )
1125             libvlc_exception_clear( p_e );
1126         return state;
1127     }
1128
1129     var_Get( p_input_thread, "state", &val );
1130     state = vlc_to_libvlc_state(val.i_int);
1131
1132     if( state == libvlc_Playing )
1133     {
1134         float caching;
1135         caching = var_GetFloat( p_input_thread, "cache" );
1136         if( caching > 0.0 && caching < 1.0 )
1137             state = libvlc_Buffering;
1138     }
1139     vlc_object_release( p_input_thread );
1140     return state;
1141 }
1142
1143 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi,
1144                                        libvlc_exception_t *p_e )
1145 {
1146     input_thread_t *p_input_thread;
1147     vlc_value_t val;
1148
1149     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1150     if ( !p_input_thread )
1151     {
1152         /* We do return the right value, no need to throw an exception */
1153         if( libvlc_exception_raised( p_e ) )
1154             libvlc_exception_clear( p_e );
1155         return false;
1156     }
1157     var_Get( p_input_thread, "can-seek", &val );
1158     vlc_object_release( p_input_thread );
1159
1160     return val.b_bool;
1161 }
1162
1163 /* internal function, used by audio, video */
1164 libvlc_track_description_t *
1165         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1166                                       const char *psz_variable,
1167                                       libvlc_exception_t *p_e )
1168 {
1169     input_thread_t *p_input = libvlc_get_input_thread( p_mi, p_e );
1170     libvlc_track_description_t *p_track_description = NULL,
1171                                *p_actual, *p_previous;
1172
1173     if( !p_input )
1174         return NULL;
1175
1176     vlc_value_t val_list, text_list;
1177     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1178
1179     /* no tracks */
1180     if( val_list.p_list->i_count <= 0 )
1181         goto end;
1182
1183     p_track_description = ( libvlc_track_description_t * )
1184         malloc( sizeof( libvlc_track_description_t ) );
1185     if ( !p_track_description )
1186     {
1187         libvlc_exception_raise( p_e, "no enough memory" );
1188         goto end;
1189     }
1190     p_actual = p_track_description;
1191     p_previous = NULL;
1192     for( int i = 0; i < val_list.p_list->i_count; i++ )
1193     {
1194         if( !p_actual )
1195         {
1196             p_actual = ( libvlc_track_description_t * )
1197                 malloc( sizeof( libvlc_track_description_t ) );
1198             if ( !p_actual )
1199             {
1200                 libvlc_track_description_release( p_track_description );
1201                 libvlc_exception_raise( p_e, "no enough memory" );
1202                 goto end;
1203             }
1204         }
1205         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1206         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1207         p_actual->p_next = NULL;
1208         if( p_previous )
1209             p_previous->p_next = p_actual;
1210         p_previous = p_actual;
1211         p_actual =  NULL;
1212     }
1213
1214 end:
1215     var_FreeList( &val_list, &text_list );
1216     vlc_object_release( p_input );
1217
1218     return p_track_description;
1219 }
1220
1221 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1222 {
1223     libvlc_track_description_t *p_actual, *p_before;
1224     p_actual = p_td;
1225
1226     while ( p_actual )
1227     {
1228         free( p_actual->psz_name );
1229         p_before = p_actual;
1230         p_actual = p_before->p_next;
1231         free( p_before );
1232     }
1233 }
1234
1235 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi,
1236                                      libvlc_exception_t *p_e )
1237 {
1238     input_thread_t *p_input_thread;
1239     vlc_value_t val;
1240
1241     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1242     if ( !p_input_thread )
1243     {
1244         /* We do return the right value, no need to throw an exception */
1245         if( libvlc_exception_raised( p_e ) )
1246             libvlc_exception_clear( p_e );
1247         return false;
1248     }
1249     var_Get( p_input_thread, "can-pause", &val );
1250     vlc_object_release( p_input_thread );
1251
1252     return val.b_bool;
1253 }