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 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <assert.h>
  29
  30 #include <vlc/libvlc.h>
  31 #include <vlc/libvlc_media.h>
  32 #include <vlc/libvlc_events.h>
  33
  34 #include <vlc_demux.h>
  35 #include <vlc_input.h>
  36 #include <vlc_vout.h>
  37
  38 #include "libvlc.h"
  39
  40 #include "libvlc_internal.h"
  41 #include "media_internal.h" // libvlc_media_set_state()
  42 #include "media_player_internal.h"
  43
  44 static int
  45 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
  46                         vlc_value_t oldval, vlc_value_t newval,
  47                         void * p_userdata );
  48 static int
  49 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
  50                         vlc_value_t oldval, vlc_value_t newval,
  51                         void * p_userdata );
  52 static int
  53 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
  54                      vlc_value_t oldval, vlc_value_t newval,
  55                      void * p_userdata );
  56
  57 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
  58                        vlc_value_t oldval, vlc_value_t newval, void *p_data );
  59
  60 static const libvlc_state_t vlc_to_libvlc_state_array[] =
  61 {
  62     [INIT_S]        = libvlc_NothingSpecial,
  63     [OPENING_S]     = libvlc_Opening,
  64     [PLAYING_S]     = libvlc_Playing,
  65     [PAUSE_S]       = libvlc_Paused,
  66     [END_S]         = libvlc_Ended,
  67     [ERROR_S]       = libvlc_Error,
  68 };
  69
  70 static inline libvlc_state_t vlc_to_libvlc_state( int vlc_state )
  71 {
  72     if( vlc_state < 0 || vlc_state > 6 )
  73         return libvlc_Ended;
  74
  75     return vlc_to_libvlc_state_array[vlc_state];
  76 }
  77
  78 /*
  79  * Release the associated input thread.
  80  *
  81  * Object lock is NOT held.
  82  */
  83 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
  84 {
  85     input_thread_t * p_input_thread;
  86
  87     if( !p_mi || !p_mi->p_input_thread )
  88         return;
  89
  90     p_input_thread = p_mi->p_input_thread;
  91
  92     var_DelCallback( p_input_thread, "can-seek",
  93                      input_seekable_changed, p_mi );
  94     var_DelCallback( p_input_thread, "can-pause",
  95                     input_pausable_changed, p_mi );
  96     var_DelCallback( p_input_thread, "intf-event",
  97                      input_event_changed, p_mi );
  98
  99     /* We owned this one */
 100     input_Stop( p_input_thread, b_input_abort );
 101     vlc_thread_join( p_input_thread );
 102
 103     var_Destroy( p_input_thread, "drawable-hwnd" );
 104     var_Destroy( p_input_thread, "drawable-xid" );
 105     var_Destroy( p_input_thread, "drawable-agl" );
 106
 107     vlc_object_release( p_input_thread );
 108
 109     p_mi->p_input_thread = NULL;
 110 }
 111
 112 /*
 113  * Retrieve the input thread. Be sure to release the object
 114  * once you are done with it. (libvlc Internal)
 115  *
 116  * Function will lock the object.
 117  */
 118 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi,
 119                                          libvlc_exception_t *p_e )
 120 {
 121     input_thread_t *p_input_thread;
 122
 123     if( !p_mi ) RAISENULL( "Media Instance is NULL" );
 124
 125     vlc_mutex_lock( &p_mi->object_lock );
 126
 127     if( !p_mi->p_input_thread )
 128     {
 129         vlc_mutex_unlock( &p_mi->object_lock );
 130         RAISENULL( "Input is NULL" );
 131     }
 132
 133     p_input_thread = p_mi->p_input_thread;
 134     vlc_object_hold( p_input_thread );
 135
 136     vlc_mutex_unlock( &p_mi->object_lock );
 137
 138     return p_input_thread;
 139 }
 140
 141 static int
 142 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 143                         vlc_value_t oldval, vlc_value_t newval,
 144                         void * p_userdata )
 145 {
 146     VLC_UNUSED(oldval);
 147     VLC_UNUSED(p_this);
 148     VLC_UNUSED(psz_cmd);
 149     libvlc_media_player_t * p_mi = p_userdata;
 150     libvlc_event_t event;
 151
 152     libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 153     event.type = libvlc_MediaPlayerSeekableChanged;
 154     event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
 155
 156     libvlc_event_send( p_mi->p_event_manager, &event );
 157     return VLC_SUCCESS;
 158 }
 159
 160 static int
 161 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 162                         vlc_value_t oldval, vlc_value_t newval,
 163                         void * p_userdata )
 164 {
 165     VLC_UNUSED(oldval);
 166     VLC_UNUSED(p_this);
 167     VLC_UNUSED(psz_cmd);
 168     libvlc_media_player_t * p_mi = p_userdata;
 169     libvlc_event_t event;
 170
 171     libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 172     event.type = libvlc_MediaPlayerPausableChanged;
 173     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 174
 175     libvlc_event_send( p_mi->p_event_manager, &event );
 176     return VLC_SUCCESS;
 177 }
 178
 179 static int
 180 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 181                      vlc_value_t oldval, vlc_value_t newval,
 182                      void * p_userdata )
 183 {
 184     VLC_UNUSED(oldval);
 185     input_thread_t * p_input = (input_thread_t *)p_this;
 186     libvlc_media_player_t * p_mi = p_userdata;
 187     libvlc_event_t event;
 188
 189     assert( !strcmp( psz_cmd, "intf-event" ) );
 190
 191     if( newval.i_int == INPUT_EVENT_STATE )
 192     {
 193         libvlc_state_t libvlc_state;
 194
 195         switch ( var_GetInteger( p_input, "state" ) )
 196         {
 197             case INIT_S:
 198                 libvlc_state = libvlc_NothingSpecial;
 199                 event.type = libvlc_MediaPlayerNothingSpecial;
 200                 break;
 201             case OPENING_S:
 202                 libvlc_state = libvlc_Opening;
 203                 event.type = libvlc_MediaPlayerOpening;
 204                 break;
 205             case PLAYING_S:
 206                 libvlc_state = libvlc_Playing;
 207                 event.type = libvlc_MediaPlayerPlaying;
 208                 break;
 209             case PAUSE_S:
 210                 libvlc_state = libvlc_Paused;
 211                 event.type = libvlc_MediaPlayerPaused;
 212                 break;
 213             case END_S:
 214                 libvlc_state = libvlc_Ended;
 215                 event.type = libvlc_MediaPlayerEndReached;
 216                 break;
 217             case ERROR_S:
 218                 libvlc_state = libvlc_Error;
 219                 event.type = libvlc_MediaPlayerEncounteredError;
 220                 break;
 221
 222             default:
 223                 return VLC_SUCCESS;
 224         }
 225
 226         libvlc_media_set_state( p_mi->p_md, libvlc_state, NULL );
 227         libvlc_event_send( p_mi->p_event_manager, &event );
 228     }
 229     else if( newval.i_int == INPUT_EVENT_POSITION )
 230     {
 231         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 232             return VLC_SUCCESS; /* Don't send the position while stopped */
 233
 234         /* */
 235         event.type = libvlc_MediaPlayerPositionChanged;
 236         event.u.media_player_position_changed.new_position =
 237                                           var_GetFloat( p_input, "position" );
 238         libvlc_event_send( p_mi->p_event_manager, &event );
 239
 240         /* */
 241         event.type = libvlc_MediaPlayerTimeChanged;
 242         event.u.media_player_time_changed.new_time =
 243                                                var_GetTime( p_input, "time" );
 244         libvlc_event_send( p_mi->p_event_manager, &event );
 245     }
 246     else if( newval.i_int == INPUT_EVENT_LENGTH )
 247     {
 248         event.type = libvlc_MediaPlayerLengthChanged;
 249         event.u.media_player_length_changed.new_length =
 250                                                var_GetTime( p_input, "length" );
 251         libvlc_event_send( p_mi->p_event_manager, &event );
 252     }
 253
 254     return VLC_SUCCESS;
 255
 256 }
 257
 258 static void libvlc_media_player_destroy( libvlc_media_player_t * );
 259
 260 /**************************************************************************
 261  * Create a Media Instance object.
 262  *
 263  * Refcount strategy:
 264  * - All items created by _new start with a refcount set to 1.
 265  * - Accessor _release decrease the refcount by 1, if after that
 266  *   operation the refcount is 0, the object is destroyed.
 267  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 268  *
 269  * Object locking strategy:
 270  * - No lock held while in constructor.
 271  * - When accessing any member variable this lock is held. (XXX who locks?)
 272  * - When attempting to destroy the object the lock is also held.
 273  **************************************************************************/
 274 libvlc_media_player_t *
 275 libvlc_media_player_new( libvlc_instance_t * p_libvlc_instance,
 276                            libvlc_exception_t * p_e )
 277 {
 278     libvlc_media_player_t * p_mi;
 279
 280     if( !p_libvlc_instance )
 281     {
 282         libvlc_exception_raise( p_e, "invalid libvlc instance" );
 283         return NULL;
 284     }
 285
 286     p_mi = malloc( sizeof(libvlc_media_player_t) );
 287     if( !p_mi )
 288     {
 289         libvlc_exception_raise( p_e, "not enough memory" );
 290         return NULL;
 291     }
 292     p_mi->p_md = NULL;
 293     p_mi->drawable.agl = 0;
 294     p_mi->drawable.xid = 0;
 295     p_mi->drawable.hwnd = NULL;
 296     p_mi->drawable.nsobject = NULL;
 297     p_mi->p_libvlc_instance = p_libvlc_instance;
 298     p_mi->p_input_thread = NULL;
 299     p_mi->i_refcount = 1;
 300     vlc_mutex_init( &p_mi->object_lock );
 301     p_mi->p_event_manager = libvlc_event_manager_new( p_mi,
 302             p_libvlc_instance, p_e );
 303     if( libvlc_exception_raised( p_e ) )
 304     {
 305         vlc_mutex_destroy( &p_mi->object_lock );
 306         free( p_mi );
 307         return NULL;
 308     }
 309
 310     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 311             libvlc_MediaPlayerNothingSpecial, p_e );
 312     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 313             libvlc_MediaPlayerOpening, p_e );
 314     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 315             libvlc_MediaPlayerBuffering, p_e );
 316     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 317             libvlc_MediaPlayerPlaying, p_e );
 318     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 319             libvlc_MediaPlayerPaused, p_e );
 320     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 321             libvlc_MediaPlayerStopped, p_e );
 322     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 323             libvlc_MediaPlayerForward, p_e );
 324     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 325             libvlc_MediaPlayerBackward, p_e );
 326     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 327             libvlc_MediaPlayerEndReached, p_e );
 328     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 329             libvlc_MediaPlayerEncounteredError, p_e );
 330
 331     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 332             libvlc_MediaPlayerPositionChanged, p_e );
 333     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 334             libvlc_MediaPlayerTimeChanged, p_e );
 335     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 336             libvlc_MediaPlayerLengthChanged, p_e );
 337     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 338             libvlc_MediaPlayerTitleChanged, p_e );
 339     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 340             libvlc_MediaPlayerSeekableChanged, p_e );
 341     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 342             libvlc_MediaPlayerPausableChanged, p_e );
 343
 344     /* Snapshot initialization */
 345     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 346            libvlc_MediaPlayerSnapshotTaken, p_e );
 347
 348     /* Attach a var callback to the global object to provide the glue between
 349         vout_thread that generates the event and media_player that re-emits it
 350         with its own event manager
 351     */
 352     var_Create( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 353                 VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 354     var_AddCallback( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 355                      SnapshotTakenCallback, p_mi );
 356
 357     return p_mi;
 358 }
 359
 360 /**************************************************************************
 361  * Create a Media Instance object with a media descriptor.
 362  **************************************************************************/
 363 libvlc_media_player_t *
 364 libvlc_media_player_new_from_media(
 365                                     libvlc_media_t * p_md,
 366                                     libvlc_exception_t *p_e )
 367 {
 368     libvlc_media_player_t * p_mi;
 369
 370     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance, p_e );
 371     if( !p_mi )
 372         return NULL;
 373
 374     libvlc_media_retain( p_md );
 375     p_mi->p_md = p_md;
 376
 377     return p_mi;
 378 }
 379
 380 /**************************************************************************
 381  * Destroy a Media Instance object (libvlc internal)
 382  *
 383  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 384  **************************************************************************/
 385 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 386 {
 387     input_thread_t *p_input_thread;
 388     libvlc_exception_t p_e;
 389
 390     assert( p_mi );
 391
 392     /* Detach Callback from the main libvlc object */
 393     var_DelCallback( p_mi->p_libvlc_instance->p_libvlc_int,
 394                      "vout-snapshottaken", SnapshotTakenCallback, p_mi );
 395
 396     libvlc_exception_init( &p_e );
 397     p_input_thread = libvlc_get_input_thread( p_mi, &p_e );
 398
 399     if( libvlc_exception_raised( &p_e ) )
 400         /* no need to worry about no input thread */
 401         libvlc_exception_clear( &p_e );
 402     else
 403         release_input_thread( p_mi, true );
 404
 405     libvlc_event_manager_release( p_mi->p_event_manager );
 406     libvlc_media_release( p_mi->p_md );
 407     vlc_mutex_destroy( &p_mi->object_lock );
 408     free( p_mi );
 409 }
 410
 411 /**************************************************************************
 412  * Release a Media Instance object.
 413  *
 414  * Function does the locking.
 415  **************************************************************************/
 416 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 417 {
 418     bool destroy;
 419
 420     assert( p_mi );
 421     vlc_mutex_lock( &p_mi->object_lock );
 422     destroy = !--p_mi->i_refcount;
 423     vlc_mutex_unlock( &p_mi->object_lock );
 424
 425     if( destroy )
 426         libvlc_media_player_destroy( p_mi );
 427 }
 428
 429 /**************************************************************************
 430  * Retain a Media Instance object.
 431  *
 432  * Caller must hold the lock.
 433  **************************************************************************/
 434 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 435 {
 436     assert( p_mi );
 437
 438     vlc_mutex_lock( &p_mi->object_lock );
 439     p_mi->i_refcount++;
 440     vlc_mutex_unlock( &p_mi->object_lock );
 441 }
 442
 443 /**************************************************************************
 444  * Set the Media descriptor associated with the instance.
 445  *
 446  * Enter without lock -- function will lock the object.
 447  **************************************************************************/
 448 void libvlc_media_player_set_media(
 449                             libvlc_media_player_t *p_mi,
 450                             libvlc_media_t *p_md,
 451                             libvlc_exception_t *p_e )
 452 {
 453     VLC_UNUSED(p_e);
 454
 455     if( !p_mi )
 456         return;
 457
 458     vlc_mutex_lock( &p_mi->object_lock );
 459
 460     /* FIXME I am not sure if it is a user request or on die(eof/error)
 461      * request here */
 462     release_input_thread( p_mi,
 463                           p_mi->p_input_thread &&
 464                           !p_mi->p_input_thread->b_eof &&
 465                           !p_mi->p_input_thread->b_error );
 466
 467     if( p_mi->p_md )
 468         libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, p_e );
 469
 470     libvlc_media_release( p_mi->p_md );
 471
 472     if( !p_md )
 473     {
 474         p_mi->p_md = NULL;
 475         vlc_mutex_unlock( &p_mi->object_lock );
 476         return; /* It is ok to pass a NULL md */
 477     }
 478
 479     libvlc_media_retain( p_md );
 480     p_mi->p_md = p_md;
 481
 482     /* The policy here is to ignore that we were created using a different
 483      * libvlc_instance, because we don't really care */
 484     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 485
 486     vlc_mutex_unlock( &p_mi->object_lock );
 487 }
 488
 489 /**************************************************************************
 490  * Get the Media descriptor associated with the instance.
 491  **************************************************************************/
 492 libvlc_media_t *
 493 libvlc_media_player_get_media(
 494                             libvlc_media_player_t *p_mi,
 495                             libvlc_exception_t *p_e )
 496 {
 497     libvlc_media_t *p_m;
 498     VLC_UNUSED(p_e);
 499
 500     vlc_mutex_lock( &p_mi->object_lock );
 501     p_m = p_mi->p_md;
 502     if( p_m )
 503         libvlc_media_retain( p_mi->p_md );
 504     vlc_mutex_unlock( &p_mi->object_lock );
 505     return p_mi->p_md;
 506 }
 507
 508 /**************************************************************************
 509  * Get the event Manager.
 510  **************************************************************************/
 511 libvlc_event_manager_t *
 512 libvlc_media_player_event_manager(
 513                             libvlc_media_player_t *p_mi,
 514                             libvlc_exception_t *p_e )
 515 {
 516     VLC_UNUSED(p_e);
 517
 518     return p_mi->p_event_manager;
 519 }
 520
 521 /**************************************************************************
 522  * Trigger a snapshot Taken Event.
 523  *************************************************************************/
 524 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
 525                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 526 {
 527     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
 528     VLC_UNUSED(p_this) ;
 529
 530     libvlc_media_player_t* p_mi = (libvlc_media_player_t*) p_data ;
 531     libvlc_event_t event ;
 532     event.type = libvlc_MediaPlayerSnapshotTaken ;
 533     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string ;
 534     /* Snapshot psz data is a vlc_variable owned by libvlc object .
 535          Its memmory management is taken care by the obj*/
 536     msg_Dbg( p_this, "about to emit libvlc_snapshot_taken.make psz_str=0x%p"
 537              " (%s)", event.u.media_player_snapshot_taken.psz_filename,
 538              event.u.media_player_snapshot_taken.psz_filename );
 539     libvlc_event_send( p_mi->p_event_manager, &event );
 540
 541     return VLC_SUCCESS;
 542 }
 543
 544 /**************************************************************************
 545  * Tell media player to start playing.
 546  **************************************************************************/
 547 void libvlc_media_player_play( libvlc_media_player_t *p_mi,
 548                                  libvlc_exception_t *p_e )
 549 {
 550     input_thread_t * p_input_thread;
 551
 552     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 553     {
 554         /* A thread already exists, send it a play message */
 555         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 556         vlc_object_release( p_input_thread );
 557         return;
 558     }
 559
 560     /* Ignore previous exception */
 561     libvlc_exception_clear( p_e );
 562
 563     vlc_mutex_lock( &p_mi->object_lock );
 564
 565     if( !p_mi->p_md )
 566     {
 567         libvlc_exception_raise( p_e, "no associated media descriptor" );
 568         vlc_mutex_unlock( &p_mi->object_lock );
 569         return;
 570     }
 571
 572     p_mi->p_input_thread = input_Create( p_mi->p_libvlc_instance->p_libvlc_int,
 573                                          p_mi->p_md->p_input_item, NULL, NULL );
 574
 575     if( !p_mi->p_input_thread )
 576     {
 577         vlc_mutex_unlock( &p_mi->object_lock );
 578         return;
 579     }
 580
 581     p_input_thread = p_mi->p_input_thread;
 582
 583     var_Create( p_input_thread, "drawable-agl", VLC_VAR_INTEGER );
 584     if( p_mi->drawable.agl )
 585         var_SetInteger( p_input_thread, "drawable-agl", p_mi->drawable.agl );
 586
 587     var_Create( p_input_thread, "drawable-xid", VLC_VAR_INTEGER );
 588     if( p_mi->drawable.xid )
 589         var_SetInteger( p_input_thread, "drawable-xid", p_mi->drawable.xid );
 590
 591     var_Create( p_input_thread, "drawable-hwnd", VLC_VAR_ADDRESS );
 592     if( p_mi->drawable.hwnd != NULL )
 593     {
 594         vlc_value_t val = { .p_address = p_mi->drawable.hwnd };
 595         var_Set( p_input_thread, "drawable-hwnd", val );
 596     }
 597
 598         var_Create( p_input_thread, "drawable-nsobject", VLC_VAR_ADDRESS );
 599     if( p_mi->drawable.nsobject != NULL )
 600     {
 601         vlc_value_t val = { .p_address = p_mi->drawable.nsobject };
 602         var_Set( p_input_thread, "drawable-nsobject", val );
 603     }
 604
 605     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 606     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 607     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 608
 609     if( input_Start( p_input_thread ) )
 610     {
 611         vlc_object_release( p_input_thread );
 612         p_mi->p_input_thread = NULL;
 613     }
 614
 615     vlc_mutex_unlock( &p_mi->object_lock );
 616 }
 617
 618 /**************************************************************************
 619  * Pause.
 620  **************************************************************************/
 621 void libvlc_media_player_pause( libvlc_media_player_t *p_mi,
 622                                   libvlc_exception_t *p_e )
 623 {
 624     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 625     if( !p_input_thread )
 626         return;
 627
 628     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 629     if( state == libvlc_Playing || state == libvlc_Buffering )
 630     {
 631         if( libvlc_media_player_can_pause( p_mi, p_e ) )
 632             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 633         else
 634             libvlc_media_player_stop( p_mi, p_e );
 635     }
 636     else
 637         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 638
 639     vlc_object_release( p_input_thread );
 640 }
 641
 642 /**************************************************************************
 643  * Tells whether the media player is currently playing.
 644  *
 645  * Enter with lock held.
 646  **************************************************************************/
 647 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi,
 648                                      libvlc_exception_t *p_e )
 649 {
 650     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 651     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 652 }
 653
 654 /**************************************************************************
 655  * Stop playing.
 656  **************************************************************************/
 657 void libvlc_media_player_stop( libvlc_media_player_t *p_mi,
 658                                  libvlc_exception_t *p_e )
 659 {
 660     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 661
 662     if( state == libvlc_Playing ||
 663         state == libvlc_Paused ||
 664         state == libvlc_Buffering )
 665     {
 666         /* Send a stop notification event only if we are in playing,
 667          * buffering or paused states */
 668         libvlc_media_set_state( p_mi->p_md, libvlc_Ended, p_e );
 669
 670         /* Construct and send the event */
 671         libvlc_event_t event;
 672         event.type = libvlc_MediaPlayerStopped;
 673         libvlc_event_send( p_mi->p_event_manager, &event );
 674     }
 675
 676     vlc_mutex_lock( &p_mi->object_lock );
 677     release_input_thread( p_mi, true ); /* This will stop the input thread */
 678     vlc_mutex_unlock( &p_mi->object_lock );
 679 }
 680
 681 /**************************************************************************
 682  * set_nsobject
 683  **************************************************************************/
 684 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 685                                         void * drawable,
 686                                         libvlc_exception_t *p_e )
 687 {
 688     (void) p_e;
 689     p_mi->drawable.nsobject = drawable;
 690 }
 691
 692 /**************************************************************************
 693  * get_nsobject
 694  **************************************************************************/
 695 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 696 {
 697     return p_mi->drawable.nsobject;
 698 }
 699
 700 /**************************************************************************
 701  * set_agl
 702  **************************************************************************/
 703 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 704                                       uint32_t drawable,
 705                                       libvlc_exception_t *p_e )
 706 {
 707     (void) p_e;
 708     p_mi->drawable.agl = drawable;
 709 }
 710
 711 /**************************************************************************
 712  * get_agl
 713  **************************************************************************/
 714 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 715 {
 716     return p_mi->drawable.agl;
 717 }
 718
 719 /**************************************************************************
 720  * set_xwindow
 721  **************************************************************************/
 722 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 723                                       uint32_t drawable,
 724                                       libvlc_exception_t *p_e )
 725 {
 726     (void) p_e;
 727     p_mi->drawable.xid = drawable;
 728 }
 729
 730 /**************************************************************************
 731  * get_xwindow
 732  **************************************************************************/
 733 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 734 {
 735     return p_mi->drawable.xid;
 736 }
 737
 738 /**************************************************************************
 739  * set_hwnd
 740  **************************************************************************/
 741 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 742                                    void *drawable,
 743                                    libvlc_exception_t *p_e )
 744 {
 745     (void) p_e;
 746     p_mi->drawable.hwnd = drawable;
 747 }
 748
 749 /**************************************************************************
 750  * get_hwnd
 751  **************************************************************************/
 752 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 753 {
 754     return p_mi->drawable.hwnd;
 755 }
 756
 757 /**************************************************************************
 758  * Set Drawable
 759  **************************************************************************/
 760 void libvlc_media_player_set_drawable( libvlc_media_player_t *p_mi,
 761                                        libvlc_drawable_t drawable,
 762                                        libvlc_exception_t *p_e )
 763 {
 764 #ifdef WIN32
 765     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 766         p_mi->drawable.hwnd = (HWND)drawable;
 767     else
 768         libvlc_exception_raise(p_e, "Operation not supported");
 769 #elif defined(__APPLE__)
 770     p_mi->drawable.agl = drawable;
 771     (void) p_e;
 772 #else
 773     p_mi->drawable.xid = drawable;
 774     (void) p_e;
 775 #endif
 776 }
 777
 778 /**************************************************************************
 779  * Get Drawable
 780  **************************************************************************/
 781 libvlc_drawable_t
 782 libvlc_media_player_get_drawable ( libvlc_media_player_t *p_mi,
 783                                    libvlc_exception_t *p_e )
 784 {
 785     VLC_UNUSED(p_e);
 786
 787 #ifdef WIN32
 788     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 789         return (libvlc_drawable_t)p_mi->drawable.hwnd;
 790     else
 791         return 0;
 792 #elif defined(__APPLE__)
 793     return p_mi->drawable.agl;
 794 #else
 795     return p_mi->drawable.xid;
 796 #endif
 797 }
 798
 799 /**************************************************************************
 800  * Getters for stream information
 801  **************************************************************************/
 802 libvlc_time_t libvlc_media_player_get_length(
 803                              libvlc_media_player_t *p_mi,
 804                              libvlc_exception_t *p_e )
 805 {
 806     input_thread_t *p_input_thread;
 807     vlc_value_t val;
 808
 809     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 810     if( !p_input_thread )
 811         return -1;
 812
 813     var_Get( p_input_thread, "length", &val );
 814     vlc_object_release( p_input_thread );
 815
 816     return (val.i_time+500LL)/1000LL;
 817 }
 818
 819 libvlc_time_t libvlc_media_player_get_time(
 820                                    libvlc_media_player_t *p_mi,
 821                                    libvlc_exception_t *p_e )
 822 {
 823     input_thread_t *p_input_thread;
 824     vlc_value_t val;
 825
 826     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 827     if( !p_input_thread )
 828         return -1;
 829
 830     var_Get( p_input_thread , "time", &val );
 831     vlc_object_release( p_input_thread );
 832     return (val.i_time+500LL)/1000LL;
 833 }
 834
 835 void libvlc_media_player_set_time(
 836                                  libvlc_media_player_t *p_mi,
 837                                  libvlc_time_t time,
 838                                  libvlc_exception_t *p_e )
 839 {
 840     input_thread_t *p_input_thread;
 841
 842     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 843     if( !p_input_thread )
 844         return;
 845
 846     var_SetTime( p_input_thread, "time", time*1000LL );
 847     vlc_object_release( p_input_thread );
 848 }
 849
 850 void libvlc_media_player_set_position(
 851                                 libvlc_media_player_t *p_mi,
 852                                 float position,
 853                                 libvlc_exception_t *p_e )
 854 {
 855     input_thread_t *p_input_thread;
 856
 857     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 858     if( !p_input_thread )
 859         return;
 860
 861     var_SetFloat( p_input_thread, "position", position );
 862     vlc_object_release( p_input_thread );
 863 }
 864
 865 float libvlc_media_player_get_position(
 866                                  libvlc_media_player_t *p_mi,
 867                                  libvlc_exception_t *p_e )
 868 {
 869     input_thread_t *p_input_thread;
 870     vlc_value_t val;
 871
 872     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 873     if( !p_input_thread )
 874         return -1.0;
 875
 876     var_Get( p_input_thread, "position", &val );
 877     vlc_object_release( p_input_thread );
 878
 879     return val.f_float;
 880 }
 881
 882 void libvlc_media_player_set_chapter(
 883                                  libvlc_media_player_t *p_mi,
 884                                  int chapter,
 885                                  libvlc_exception_t *p_e )
 886 {
 887     input_thread_t *p_input_thread;
 888
 889     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 890     if( !p_input_thread )
 891         return;
 892
 893     var_SetInteger( p_input_thread, "chapter", chapter );
 894     vlc_object_release( p_input_thread );
 895 }
 896
 897 int libvlc_media_player_get_chapter(
 898                                  libvlc_media_player_t *p_mi,
 899                                  libvlc_exception_t *p_e )
 900 {
 901     input_thread_t *p_input_thread;
 902     vlc_value_t val;
 903
 904     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 905     if( !p_input_thread )
 906         return -1;
 907
 908     var_Get( p_input_thread, "chapter", &val );
 909     vlc_object_release( p_input_thread );
 910
 911     return val.i_int;
 912 }
 913
 914 int libvlc_media_player_get_chapter_count(
 915                                  libvlc_media_player_t *p_mi,
 916                                  libvlc_exception_t *p_e )
 917 {
 918     input_thread_t *p_input_thread;
 919     vlc_value_t val;
 920
 921     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 922     if( !p_input_thread )
 923         return -1;
 924
 925     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 926     vlc_object_release( p_input_thread );
 927
 928     return val.i_int;
 929 }
 930
 931 int libvlc_media_player_get_chapter_count_for_title(
 932                                  libvlc_media_player_t *p_mi,
 933                                  int i_title,
 934                                  libvlc_exception_t *p_e )
 935 {
 936     input_thread_t *p_input_thread;
 937     vlc_value_t val;
 938
 939     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 940     if( !p_input_thread )
 941         return -1;
 942
 943     char *psz_name;
 944     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 945     {
 946         vlc_object_release( p_input_thread );
 947         return -1;
 948     }
 949     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 950     vlc_object_release( p_input_thread );
 951     free( psz_name );
 952
 953     return val.i_int;
 954 }
 955
 956 void libvlc_media_player_set_title(
 957                                  libvlc_media_player_t *p_mi,
 958                                  int i_title,
 959                                  libvlc_exception_t *p_e )
 960 {
 961     input_thread_t *p_input_thread;
 962
 963     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 964     if( !p_input_thread )
 965         return;
 966
 967     var_SetInteger( p_input_thread, "title", i_title );
 968     vlc_object_release( p_input_thread );
 969
 970     //send event
 971     libvlc_event_t event;
 972     event.type = libvlc_MediaPlayerTitleChanged;
 973     event.u.media_player_title_changed.new_title = i_title;
 974     libvlc_event_send( p_mi->p_event_manager, &event );
 975 }
 976
 977 int libvlc_media_player_get_title(
 978                                  libvlc_media_player_t *p_mi,
 979                                  libvlc_exception_t *p_e )
 980 {
 981     input_thread_t *p_input_thread;
 982     vlc_value_t val;
 983
 984     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 985     if( !p_input_thread )
 986         return -1;
 987
 988     var_Get( p_input_thread, "title", &val );
 989     vlc_object_release( p_input_thread );
 990
 991     return val.i_int;
 992 }
 993
 994 int libvlc_media_player_get_title_count(
 995                                  libvlc_media_player_t *p_mi,
 996                                  libvlc_exception_t *p_e )
 997 {
 998     input_thread_t *p_input_thread;
 999     vlc_value_t val;
1000
1001     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1002     if( !p_input_thread )
1003         return -1;
1004
1005     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1006     vlc_object_release( p_input_thread );
1007
1008     return val.i_int;
1009 }
1010
1011 void libvlc_media_player_next_chapter(
1012                                  libvlc_media_player_t *p_mi,
1013                                  libvlc_exception_t *p_e )
1014 {
1015     input_thread_t *p_input_thread;
1016
1017     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1018     if( !p_input_thread )
1019         return;
1020
1021     int i_type = var_Type( p_input_thread, "next-chapter" );
1022     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1023                             "next-chapter":"next-title", true );
1024
1025     vlc_object_release( p_input_thread );
1026 }
1027
1028 void libvlc_media_player_previous_chapter(
1029                                  libvlc_media_player_t *p_mi,
1030                                  libvlc_exception_t *p_e )
1031 {
1032     input_thread_t *p_input_thread;
1033
1034     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1035     if( !p_input_thread )
1036         return;
1037
1038     int i_type = var_Type( p_input_thread, "next-chapter" );
1039     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1040                             "prev-chapter":"prev-title", true );
1041
1042     vlc_object_release( p_input_thread );
1043 }
1044
1045 float libvlc_media_player_get_fps(
1046                                  libvlc_media_player_t *p_mi,
1047                                  libvlc_exception_t *p_e)
1048 {
1049     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1050     double f_fps = 0.0;
1051
1052     if( p_input_thread )
1053     {
1054         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1055             f_fps = 0.0;
1056         vlc_object_release( p_input_thread );
1057     }
1058     return f_fps;
1059 }
1060
1061 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi,
1062                                      libvlc_exception_t *p_e)
1063 {
1064     input_thread_t *p_input_thread =
1065                             libvlc_get_input_thread ( p_mi, p_e);
1066     if ( !p_input_thread )
1067         return false;
1068
1069     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
1070     {
1071         vlc_object_release( p_input_thread );
1072         return true;
1073     }
1074     vlc_object_release( p_input_thread );
1075     return false;
1076 }
1077
1078 void libvlc_media_player_set_rate(
1079                                  libvlc_media_player_t *p_mi,
1080                                  float rate,
1081                                  libvlc_exception_t *p_e )
1082 {
1083     input_thread_t *p_input_thread;
1084     bool b_can_rewind;
1085
1086     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1087     if( !p_input_thread )
1088         return;
1089
1090     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1091     if( (rate < 0.0) && !b_can_rewind )
1092     {
1093         vlc_object_release( p_input_thread );
1094         libvlc_exception_raise( p_e, "Rate value is invalid" );
1095         return;
1096     }
1097
1098     var_SetInteger( p_input_thread, "rate", 1000.0f/rate );
1099     vlc_object_release( p_input_thread );
1100 }
1101
1102 float libvlc_media_player_get_rate(
1103                                  libvlc_media_player_t *p_mi,
1104                                  libvlc_exception_t *p_e )
1105 {
1106     input_thread_t *p_input_thread;
1107     vlc_value_t val;
1108     bool b_can_rewind;
1109
1110     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1111     if( !p_input_thread )
1112         return 0.0;  /* rate < 0 indicates rewind */
1113
1114     var_Get( p_input_thread, "rate", &val );
1115     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1116     if( (val.i_int < 0) && !b_can_rewind )
1117     {
1118         libvlc_exception_raise( p_e, "invalid rate" );
1119         return 0.0;
1120     }
1121     vlc_object_release( p_input_thread );
1122
1123     return (float)1000.0f/val.i_int;
1124 }
1125
1126 libvlc_state_t libvlc_media_player_get_state(
1127                                  libvlc_media_player_t *p_mi,
1128                                  libvlc_exception_t *p_e )
1129 {
1130     input_thread_t *p_input_thread;
1131     libvlc_state_t state = libvlc_Ended;
1132     vlc_value_t val;
1133
1134     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1135     if( !p_input_thread )
1136     {
1137         /* We do return the right value, no need to throw an exception */
1138         if( libvlc_exception_raised( p_e ) )
1139             libvlc_exception_clear( p_e );
1140         return state;
1141     }
1142
1143     var_Get( p_input_thread, "state", &val );
1144     state = vlc_to_libvlc_state(val.i_int);
1145
1146     if( state == libvlc_Playing )
1147     {
1148         float caching;
1149         caching = var_GetFloat( p_input_thread, "cache" );
1150         if( caching > 0.0 && caching < 1.0 )
1151             state = libvlc_Buffering;
1152     }
1153     vlc_object_release( p_input_thread );
1154     return state;
1155 }
1156
1157 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi,
1158                                        libvlc_exception_t *p_e )
1159 {
1160     input_thread_t *p_input_thread;
1161     vlc_value_t val;
1162
1163     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1164     if ( !p_input_thread )
1165     {
1166         /* We do return the right value, no need to throw an exception */
1167         if( libvlc_exception_raised( p_e ) )
1168             libvlc_exception_clear( p_e );
1169         return false;
1170     }
1171     var_Get( p_input_thread, "can-seek", &val );
1172     vlc_object_release( p_input_thread );
1173
1174     return val.b_bool;
1175 }
1176
1177 /* internal function, used by audio, video */
1178 libvlc_track_description_t *
1179         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1180                                       const char *psz_variable,
1181                                       libvlc_exception_t *p_e )
1182 {
1183     input_thread_t *p_input = libvlc_get_input_thread( p_mi, p_e );
1184     libvlc_track_description_t *p_track_description = NULL,
1185                                *p_actual, *p_previous;
1186
1187     if( !p_input )
1188         return NULL;
1189
1190     vlc_value_t val_list, text_list;
1191     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1192
1193     /* no tracks */
1194     if( val_list.p_list->i_count <= 0 )
1195         goto end;
1196
1197     p_track_description = ( libvlc_track_description_t * )
1198         malloc( sizeof( libvlc_track_description_t ) );
1199     if ( !p_track_description )
1200     {
1201         libvlc_exception_raise( p_e, "not enough memory" );
1202         goto end;
1203     }
1204     p_actual = p_track_description;
1205     p_previous = NULL;
1206     for( int i = 0; i < val_list.p_list->i_count; i++ )
1207     {
1208         if( !p_actual )
1209         {
1210             p_actual = ( libvlc_track_description_t * )
1211                 malloc( sizeof( libvlc_track_description_t ) );
1212             if ( !p_actual )
1213             {
1214                 libvlc_track_description_release( p_track_description );
1215                 libvlc_exception_raise( p_e, "not enough memory" );
1216                 goto end;
1217             }
1218         }
1219         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1220         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1221         p_actual->p_next = NULL;
1222         if( p_previous )
1223             p_previous->p_next = p_actual;
1224         p_previous = p_actual;
1225         p_actual =  NULL;
1226     }
1227
1228 end:
1229     var_FreeList( &val_list, &text_list );
1230     vlc_object_release( p_input );
1231
1232     return p_track_description;
1233 }
1234
1235 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1236 {
1237     libvlc_track_description_t *p_actual, *p_before;
1238     p_actual = p_td;
1239
1240     while ( p_actual )
1241     {
1242         free( p_actual->psz_name );
1243         p_before = p_actual;
1244         p_actual = p_before->p_next;
1245         free( p_before );
1246     }
1247 }
1248
1249 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi,
1250                                      libvlc_exception_t *p_e )
1251 {
1252     input_thread_t *p_input_thread;
1253     vlc_value_t val;
1254
1255     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1256     if ( !p_input_thread )
1257     {
1258         /* We do return the right value, no need to throw an exception */
1259         if( libvlc_exception_raised( p_e ) )
1260             libvlc_exception_clear( p_e );
1261         return false;
1262     }
1263     var_Get( p_input_thread, "can-pause", &val );
1264     vlc_object_release( p_input_thread );
1265
1266     return val.b_bool;
1267 }