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