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