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 /* Mouse events */
  62 static int
  63 mouse_moved( vlc_object_t *p_this, char const *psz_cmd,
  64                     vlc_value_t oldval, vlc_value_t newval, void *p_data );
  65 static int
  66 mouse_button( vlc_object_t *p_this, char const *psz_cmd,
  67                     vlc_value_t oldval, vlc_value_t newval, void *p_data );
  68 static int
  69 mouse_clicked( vlc_object_t *p_this, char const *psz_cmd,
  70                     vlc_value_t oldval, vlc_value_t newval, void *p_data );
  71 static int
  72 mouse_object( vlc_object_t *p_this, char const *psz_cmd,
  73                     vlc_value_t oldval, vlc_value_t newval, void *p_data );
  74
  75 /* */
  76 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi );
  77
  78 /*
  79  * Shortcuts
  80  */
  81
  82 #define register_event(a, b) __register_event(a, libvlc_MediaPlayer ## b)
  83 static inline void __register_event(libvlc_media_player_t *mp, libvlc_event_type_t type)
  84 {
  85     libvlc_event_manager_register_event_type(mp->p_event_manager, type);
  86 }
  87
  88 static inline void lock(libvlc_media_player_t *mp)
  89 {
  90     vlc_mutex_lock(&mp->object_lock);
  91 }
  92
  93 static inline void unlock(libvlc_media_player_t *mp)
  94 {
  95     vlc_mutex_unlock(&mp->object_lock);
  96 }
  97
  98 /*
  99  * Release the associated input thread.
 100  *
 101  * Object lock is NOT held.
 102  */
 103 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
 104 {
 105     assert( p_mi );
 106
 107     input_thread_t *p_input_thread = p_mi->p_input_thread;
 108     if( !p_input_thread )
 109         return;
 110
 111     var_DelCallback( p_input_thread, "can-seek",
 112                      input_seekable_changed, p_mi );
 113     var_DelCallback( p_input_thread, "can-pause",
 114                     input_pausable_changed, p_mi );
 115     var_DelCallback( p_input_thread, "intf-event",
 116                      input_event_changed, p_mi );
 117
 118     /* We owned this one */
 119     input_Stop( p_input_thread, b_input_abort );
 120
 121     vlc_thread_join( p_input_thread );
 122
 123     assert( p_mi->p_input_resource == NULL );
 124     assert( p_input_thread->b_dead );
 125     /* Store the input resource for future use. */
 126     p_mi->p_input_resource = input_DetachResource( p_input_thread );
 127
 128     vlc_object_release( p_input_thread );
 129
 130     p_mi->p_input_thread = NULL;
 131 }
 132
 133 /*
 134  * Retrieve the input thread. Be sure to release the object
 135  * once you are done with it. (libvlc Internal)
 136  *
 137  * Function will lock the object.
 138  */
 139 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi )
 140 {
 141     input_thread_t *p_input_thread;
 142
 143     assert( p_mi );
 144
 145     lock(p_mi);
 146     p_input_thread = p_mi->p_input_thread;
 147     if( p_input_thread )
 148         vlc_object_hold( p_input_thread );
 149     else
 150         libvlc_printerr( "No active input" );
 151     unlock(p_mi);
 152
 153     return p_input_thread;
 154 }
 155
 156 /*
 157  * Get vout thread from current input
 158  *
 159  * Object lock is NOT held.
 160  */
 161 static vout_thread_t *get_vout_thread( libvlc_media_player_t *p_mi )
 162 {
 163     vout_thread_t *p_vout_thread;
 164
 165     p_vout_thread = input_GetVout( p_mi->p_input_thread );
 166     if( p_vout_thread )
 167     {
 168         var_AddCallback( p_vout_thread, "mouse-button-down", mouse_button, p_mi );
 169         var_AddCallback( p_vout_thread, "mouse-moved", mouse_moved, p_mi );
 170         var_AddCallback( p_vout_thread, "mouse-clicked", mouse_clicked, p_mi );
 171         var_AddCallback( p_vout_thread, "mouse-object", mouse_object, p_mi );
 172     }
 173
 174     return p_vout_thread;
 175 }
 176
 177 /*
 178  * Release the associated vout thread.
 179  *
 180  * Object lock is NOT held.
 181  */
 182 static void release_vout_thread( libvlc_media_player_t *p_mi )
 183 {
 184     vout_thread_t *p_vout_thread;
 185
 186     if( !p_mi || !p_mi->p_vout_thread )
 187         return;
 188
 189     p_vout_thread = p_mi->p_vout_thread;
 190
 191     var_DelCallback( p_vout_thread, "mouse-button-down", mouse_button, p_mi );
 192     var_DelCallback( p_vout_thread, "mouse-moved", mouse_moved, p_mi );
 193     var_DelCallback( p_vout_thread, "mouse-clicked", mouse_clicked, p_mi );
 194     var_DelCallback( p_vout_thread, "mouse-object", mouse_object, p_mi );
 195
 196     vlc_object_release( p_vout_thread );
 197     p_mi->p_vout_thread = NULL;
 198 }
 199
 200 /*
 201  * Set the internal state of the media_player. (media player Internal)
 202  *
 203  * Function will lock the media_player.
 204  */
 205 static void set_state( libvlc_media_player_t *p_mi, libvlc_state_t state,
 206     bool b_locked )
 207 {
 208     if(!b_locked)
 209         lock(p_mi);
 210     p_mi->state = state;
 211
 212     libvlc_media_t *media = p_mi->p_md;
 213     if (media)
 214         libvlc_media_retain(media);
 215
 216     if(!b_locked)
 217         unlock(p_mi);
 218
 219     if (media)
 220     {
 221         // Also set the state of the corresponding media
 222         // This is strictly for convenience.
 223         libvlc_media_set_state(media, state);
 224
 225         libvlc_media_release(media);
 226     }
 227 }
 228
 229 static int
 230 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 231                         vlc_value_t oldval, vlc_value_t newval,
 232                         void * p_userdata )
 233 {
 234     VLC_UNUSED(oldval);
 235     VLC_UNUSED(p_this);
 236     VLC_UNUSED(psz_cmd);
 237     libvlc_media_player_t * p_mi = p_userdata;
 238     libvlc_event_t event;
 239
 240     event.type = libvlc_MediaPlayerSeekableChanged;
 241     event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
 242
 243     libvlc_event_send( p_mi->p_event_manager, &event );
 244     return VLC_SUCCESS;
 245 }
 246
 247 static int
 248 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 249                         vlc_value_t oldval, vlc_value_t newval,
 250                         void * p_userdata )
 251 {
 252     VLC_UNUSED(oldval);
 253     VLC_UNUSED(p_this);
 254     VLC_UNUSED(psz_cmd);
 255     libvlc_media_player_t * p_mi = p_userdata;
 256     libvlc_event_t event;
 257
 258     event.type = libvlc_MediaPlayerPausableChanged;
 259     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 260
 261     libvlc_event_send( p_mi->p_event_manager, &event );
 262     return VLC_SUCCESS;
 263 }
 264
 265 static int
 266 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 267                      vlc_value_t oldval, vlc_value_t newval,
 268                      void * p_userdata )
 269 {
 270     VLC_UNUSED(oldval);
 271     input_thread_t * p_input = (input_thread_t *)p_this;
 272     libvlc_media_player_t * p_mi = p_userdata;
 273     libvlc_event_t event;
 274
 275     assert( !strcmp( psz_cmd, "intf-event" ) );
 276
 277     if( newval.i_int == INPUT_EVENT_STATE )
 278     {
 279         libvlc_state_t libvlc_state;
 280
 281         switch ( var_GetInteger( p_input, "state" ) )
 282         {
 283             case INIT_S:
 284                 libvlc_state = libvlc_NothingSpecial;
 285                 event.type = libvlc_MediaPlayerNothingSpecial;
 286                 break;
 287             case OPENING_S:
 288                 libvlc_state = libvlc_Opening;
 289                 event.type = libvlc_MediaPlayerOpening;
 290                 break;
 291             case PLAYING_S:
 292                 libvlc_state = libvlc_Playing;
 293                 event.type = libvlc_MediaPlayerPlaying;
 294                 break;
 295             case PAUSE_S:
 296                 libvlc_state = libvlc_Paused;
 297                 event.type = libvlc_MediaPlayerPaused;
 298                 break;
 299             case END_S:
 300                 libvlc_state = libvlc_Ended;
 301                 event.type = libvlc_MediaPlayerEndReached;
 302                 break;
 303             case ERROR_S:
 304                 libvlc_state = libvlc_Error;
 305                 event.type = libvlc_MediaPlayerEncounteredError;
 306                 break;
 307
 308             default:
 309                 return VLC_SUCCESS;
 310         }
 311
 312         set_state( p_mi, libvlc_state, false );
 313         libvlc_event_send( p_mi->p_event_manager, &event );
 314     }
 315     else if( newval.i_int == INPUT_EVENT_ABORT )
 316     {
 317         libvlc_state_t libvlc_state = libvlc_Stopped;
 318         event.type = libvlc_MediaPlayerStopped;
 319
 320         set_state( p_mi, libvlc_state, false );
 321         libvlc_event_send( p_mi->p_event_manager, &event );
 322     }
 323     else if( newval.i_int == INPUT_EVENT_POSITION )
 324     {
 325         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 326             return VLC_SUCCESS; /* Don't send the position while stopped */
 327
 328         /* */
 329         event.type = libvlc_MediaPlayerPositionChanged;
 330         event.u.media_player_position_changed.new_position =
 331                                           var_GetFloat( p_input, "position" );
 332         libvlc_event_send( p_mi->p_event_manager, &event );
 333
 334         /* */
 335         event.type = libvlc_MediaPlayerTimeChanged;
 336         event.u.media_player_time_changed.new_time =
 337            from_mtime(var_GetTime( p_input, "time" ));
 338         libvlc_event_send( p_mi->p_event_manager, &event );
 339     }
 340     else if( newval.i_int == INPUT_EVENT_LENGTH )
 341     {
 342         event.type = libvlc_MediaPlayerLengthChanged;
 343         event.u.media_player_length_changed.new_length =
 344            from_mtime(var_GetTime( p_input, "length" ));
 345         libvlc_event_send( p_mi->p_event_manager, &event );
 346     }
 347     else if( newval.i_int == INPUT_EVENT_VOUT )
 348     {
 349         lock( p_mi );
 350         /* release old vout */
 351         if( p_mi->p_vout_thread )
 352             release_vout_thread( p_mi );
 353         /* remember new vout */
 354         p_mi->p_vout_thread = get_vout_thread( p_mi );
 355         unlock( p_mi );
 356     }
 357
 358     return VLC_SUCCESS;
 359
 360 }
 361
 362 /**************************************************************************
 363  * Snapshot Taken Event.
 364  *
 365  * FIXME: This snapshot API interface makes no sense in media_player.
 366  *************************************************************************/
 367 static int snapshot_was_taken(vlc_object_t *p_this, char const *psz_cmd,
 368                               vlc_value_t oldval, vlc_value_t newval, void *p_data )
 369 {
 370     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
 371
 372     libvlc_media_player_t *mp = p_data;
 373     libvlc_event_t event;
 374     event.type = libvlc_MediaPlayerSnapshotTaken;
 375     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string;
 376     libvlc_event_send(mp->p_event_manager, &event);
 377
 378     return VLC_SUCCESS;
 379 }
 380
 381 /**************************************************************************
 382  * Mouse  Events.
 383  *************************************************************************/
 384
 385 static int
 386 mouse_moved( vlc_object_t *p_this, char const *psz_cmd,
 387                     vlc_value_t oldval, vlc_value_t newval, void *p_data )
 388 {
 389     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
 390
 391     libvlc_media_player_t *mp = p_data;
 392     libvlc_event_t event;
 393     event.type = libvlc_MediaPlayerMouseMoved;
 394     event.u.media_player_mouse_moved.x = newval.coords.x;
 395     event.u.media_player_mouse_moved.y = newval.coords.y;
 396     libvlc_event_send(mp->p_event_manager, &event);
 397
 398     return VLC_SUCCESS;
 399 }
 400
 401 static int
 402 mouse_button( vlc_object_t *p_this, char const *psz_cmd,
 403                     vlc_value_t oldval, vlc_value_t newval, void *p_data )
 404 {
 405     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
 406
 407     libvlc_media_player_t *mp = p_data;
 408     libvlc_event_t event;
 409     int pressed = newval.i_int;
 410
 411     event.type = libvlc_MediaPlayerMouseButton;
 412     event.u.media_player_mouse_button.mb_left = (pressed & (1<<MOUSE_BUTTON_LEFT));
 413     event.u.media_player_mouse_button.mb_center = (pressed & (1<<MOUSE_BUTTON_CENTER));
 414     event.u.media_player_mouse_button.mb_right = (pressed & (1<<MOUSE_BUTTON_RIGHT));
 415     event.u.media_player_mouse_button.mb_wheel_up = (pressed & (1<<MOUSE_BUTTON_WHEEL_UP));
 416     event.u.media_player_mouse_button.mb_wheel_down = (pressed & (1<<MOUSE_BUTTON_WHEEL_DOWN));
 417     libvlc_event_send(mp->p_event_manager, &event);
 418
 419     return VLC_SUCCESS;
 420 }
 421
 422 static int
 423 mouse_clicked( vlc_object_t *p_this, char const *psz_cmd,
 424                     vlc_value_t oldval, vlc_value_t newval, void *p_data )
 425 {
 426     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
 427
 428     libvlc_media_player_t *mp = p_data;
 429     libvlc_event_t event;
 430     event.type = libvlc_MediaPlayerMouseClick;
 431     event.u.media_player_mouse_clicked.clicked = newval.b_bool ? 1 : 0;
 432     libvlc_event_send(mp->p_event_manager, &event);
 433
 434     return VLC_SUCCESS;
 435 }
 436
 437 static int
 438 mouse_object( vlc_object_t *p_this, char const *psz_cmd,
 439                     vlc_value_t oldval, vlc_value_t newval, void *p_data )
 440 {
 441     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
 442
 443     libvlc_media_player_t *mp = p_data;
 444     libvlc_event_t event;
 445     event.type = libvlc_MediaPlayerMouseObject;
 446     event.u.media_player_mouse_object.moved = (newval.b_bool ? 1 : 0);
 447     libvlc_event_send(mp->p_event_manager, &event);
 448
 449     return VLC_SUCCESS;
 450 }
 451
 452 static input_thread_t *find_input (vlc_object_t *obj)
 453 {
 454     libvlc_media_player_t *mp = (libvlc_media_player_t *)obj;
 455     input_thread_t *p_input;
 456
 457     lock (mp);
 458     p_input = mp->p_input_thread;
 459     if (p_input)
 460         vlc_object_hold (p_input);
 461     unlock (mp);
 462     return p_input;
 463 }
 464
 465 /* */
 466 static void libvlc_media_player_destroy( libvlc_media_player_t * );
 467
 468
 469 /**************************************************************************
 470  * Create a Media Instance object.
 471  *
 472  * Refcount strategy:
 473  * - All items created by _new start with a refcount set to 1.
 474  * - Accessor _release decrease the refcount by 1, if after that
 475  *   operation the refcount is 0, the object is destroyed.
 476  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 477  *
 478  * Object locking strategy:
 479  * - No lock held while in constructor.
 480  * - When accessing any member variable this lock is held. (XXX who locks?)
 481  * - When attempting to destroy the object the lock is also held.
 482  **************************************************************************/
 483 libvlc_media_player_t *
 484 libvlc_media_player_new( libvlc_instance_t *instance )
 485 {
 486     libvlc_media_player_t * mp;
 487
 488     assert(instance);
 489
 490     mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
 491     if (unlikely(mp == NULL))
 492     {
 493         libvlc_printerr("Not enough memory");
 494         return NULL;
 495     }
 496     vlc_object_attach (mp, mp->p_libvlc);
 497
 498     /* Input */
 499     var_Create (mp, "rate", VLC_VAR_FLOAT|VLC_VAR_DOINHERIT);
 500
 501     /* Video */
 502     var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
 503 #ifdef WIN32
 504     var_Create (mp, "drawable-hwnd", VLC_VAR_ADDRESS);
 505 #endif
 506 #ifdef __APPLE__
 507     var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
 508     var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
 509 #endif
 510
 511     var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
 512     var_SetBool (mp, "keyboard-events", true);
 513     var_Create (mp, "mouse-events", VLC_VAR_BOOL);
 514     var_SetBool (mp, "mouse-events", true);
 515
 516     var_Create (mp, "fullscreen", VLC_VAR_BOOL);
 517     var_Create (mp, "autoscale", VLC_VAR_BOOL);
 518     var_SetBool (mp, "autoscale", true);
 519     var_Create (mp, "scale", VLC_VAR_FLOAT);
 520     var_SetFloat (mp, "scale", 1.);
 521     var_Create (mp, "aspect-ratio", VLC_VAR_STRING);
 522     var_Create (mp, "crop", VLC_VAR_STRING);
 523     var_Create (mp, "deinterlace", VLC_VAR_INTEGER);
 524     var_Create (mp, "deinterlace-mode", VLC_VAR_STRING);
 525
 526     var_Create (mp, "vbi-page", VLC_VAR_INTEGER);
 527
 528     var_Create (mp, "marq-marquee", VLC_VAR_STRING);
 529     var_Create (mp, "marq-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 530     var_Create (mp, "marq-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 531     var_Create (mp, "marq-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 532     var_Create (mp, "marq-refresh", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 533     var_Create (mp, "marq-size", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 534     var_Create (mp, "marq-timeout", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 535     var_Create (mp, "marq-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 536     var_Create (mp, "marq-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 537
 538     var_Create (mp, "logo-file", VLC_VAR_STRING);
 539     var_Create (mp, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 540     var_Create (mp, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 541     var_Create (mp, "logo-delay", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 542     var_Create (mp, "logo-repeat", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 543     var_Create (mp, "logo-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 544     var_Create (mp, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 545
 546      /* Audio */
 547     var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 548     var_Create (mp, "volume-muted", VLC_VAR_BOOL);
 549     var_Create (mp, "saved-volume", VLC_VAR_INTEGER);
 550     var_Create (mp, "volume-change", VLC_VAR_VOID);
 551     var_Create (mp, "find-input-callback", VLC_VAR_ADDRESS);
 552     var_SetAddress (mp, "find-input-callback", find_input);
 553
 554     mp->p_md = NULL;
 555     mp->state = libvlc_NothingSpecial;
 556     mp->p_libvlc_instance = instance;
 557     mp->p_input_thread = NULL;
 558     mp->p_input_resource = NULL;
 559     mp->p_vout_thread = NULL;
 560     mp->i_refcount = 1;
 561     mp->p_event_manager = libvlc_event_manager_new(mp, instance);
 562     if (unlikely(mp->p_event_manager == NULL))
 563     {
 564         vlc_object_release(mp);
 565         return NULL;
 566     }
 567     vlc_mutex_init(&mp->object_lock);
 568
 569     register_event(mp, NothingSpecial);
 570     register_event(mp, Opening);
 571     register_event(mp, Buffering);
 572     register_event(mp, Playing);
 573     register_event(mp, Paused);
 574     register_event(mp, Stopped);
 575     register_event(mp, Forward);
 576     register_event(mp, Backward);
 577     register_event(mp, EndReached);
 578     register_event(mp, EncounteredError);
 579     register_event(mp, SeekableChanged);
 580
 581     register_event(mp, PositionChanged);
 582     register_event(mp, TimeChanged);
 583     register_event(mp, LengthChanged);
 584     register_event(mp, TitleChanged);
 585     register_event(mp, PausableChanged);
 586
 587     /* Snapshot initialization */
 588     register_event(mp, SnapshotTaken);
 589
 590     register_event(mp, MediaChanged);
 591
 592     /* mouse events */
 593     register_event(mp, MouseMoved);
 594     register_event(mp, MouseButton);
 595     register_event(mp, MouseClick);
 596     register_event(mp, MouseObject);
 597
 598     /* Attach a var callback to the global object to provide the glue between
 599      * vout_thread that generates the event and media_player that re-emits it
 600      * with its own event manager
 601      *
 602      * FIXME: It's unclear why we want to put this in public API, and why we
 603      * want to expose it in such a limiting and ugly way.
 604      */
 605     var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
 606
 607     libvlc_retain(instance);
 608     return mp;
 609 }
 610
 611 /**************************************************************************
 612  * Create a Media Instance object with a media descriptor.
 613  **************************************************************************/
 614 libvlc_media_player_t *
 615 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
 616 {
 617     libvlc_media_player_t * p_mi;
 618
 619     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
 620     if( !p_mi )
 621         return NULL;
 622
 623     libvlc_media_retain( p_md );
 624     p_mi->p_md = p_md;
 625
 626     return p_mi;
 627 }
 628
 629 /**************************************************************************
 630  * Destroy a Media Instance object (libvlc internal)
 631  *
 632  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 633  **************************************************************************/
 634 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 635 {
 636     assert( p_mi );
 637
 638     /* Detach Callback from the main libvlc object */
 639     var_DelCallback( p_mi->p_libvlc,
 640                      "snapshot-file", snapshot_was_taken, p_mi );
 641
 642     /* If the input thread hasn't been already deleted it means
 643      * that the owners didn't stop the thread before releasing it. */
 644     assert(!p_mi->p_input_thread);
 645
 646     /* Fallback for those who don't use NDEBUG */
 647     if( p_mi->p_vout_thread )
 648         release_vout_thread( p_mi );
 649
 650     if(p_mi->p_input_thread )
 651         release_input_thread(p_mi, true);
 652
 653     if( p_mi->p_input_resource )
 654     {
 655         input_resource_Delete( p_mi->p_input_resource );
 656         p_mi->p_input_resource = NULL;
 657     }
 658
 659     libvlc_event_manager_release( p_mi->p_event_manager );
 660     libvlc_media_release( p_mi->p_md );
 661     vlc_mutex_destroy( &p_mi->object_lock );
 662
 663     libvlc_instance_t *instance = p_mi->p_libvlc_instance;
 664     vlc_object_release( p_mi );
 665     libvlc_release(instance);
 666 }
 667
 668 /**************************************************************************
 669  * Release a Media Instance object.
 670  *
 671  * Function does the locking.
 672  **************************************************************************/
 673 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 674 {
 675     bool destroy;
 676
 677     assert( p_mi );
 678     lock(p_mi);
 679     destroy = !--p_mi->i_refcount;
 680     unlock(p_mi);
 681
 682     if( destroy )
 683         libvlc_media_player_destroy( p_mi );
 684 }
 685
 686 /**************************************************************************
 687  * Retain a Media Instance object.
 688  *
 689  * Caller must hold the lock.
 690  **************************************************************************/
 691 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 692 {
 693     assert( p_mi );
 694
 695     lock(p_mi);
 696     p_mi->i_refcount++;
 697     unlock(p_mi);
 698 }
 699
 700 /**************************************************************************
 701  * Set the Media descriptor associated with the instance.
 702  *
 703  * Enter without lock -- function will lock the object.
 704  **************************************************************************/
 705 void libvlc_media_player_set_media(
 706                             libvlc_media_player_t *p_mi,
 707                             libvlc_media_t *p_md )
 708 {
 709     lock(p_mi);
 710
 711     /* FIXME I am not sure if it is a user request or on die(eof/error)
 712      * request here */
 713     release_input_thread( p_mi,
 714                           p_mi->p_input_thread &&
 715                           !p_mi->p_input_thread->b_eof &&
 716                           !p_mi->p_input_thread->b_error );
 717
 718     set_state( p_mi, libvlc_NothingSpecial, true );
 719
 720     libvlc_media_release( p_mi->p_md );
 721
 722     if( !p_md )
 723     {
 724         p_mi->p_md = NULL;
 725         unlock(p_mi);
 726         return; /* It is ok to pass a NULL md */
 727     }
 728
 729     libvlc_media_retain( p_md );
 730     p_mi->p_md = p_md;
 731
 732     /* The policy here is to ignore that we were created using a different
 733      * libvlc_instance, because we don't really care */
 734     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 735
 736     unlock(p_mi);
 737
 738     /* Send an event for the newly available media */
 739     libvlc_event_t event;
 740     event.type = libvlc_MediaPlayerMediaChanged;
 741     event.u.media_player_media_changed.new_media = p_md;
 742     libvlc_event_send( p_mi->p_event_manager, &event );
 743
 744 }
 745
 746 /**************************************************************************
 747  * Get the Media descriptor associated with the instance.
 748  **************************************************************************/
 749 libvlc_media_t *
 750 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
 751 {
 752     libvlc_media_t *p_m;
 753
 754     lock(p_mi);
 755     p_m = p_mi->p_md;
 756     if( p_m )
 757         libvlc_media_retain( p_mi->p_md );
 758     unlock(p_mi);
 759     return p_mi->p_md;
 760 }
 761
 762 /**************************************************************************
 763  * Get the event Manager.
 764  **************************************************************************/
 765 libvlc_event_manager_t *
 766 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
 767 {
 768     return p_mi->p_event_manager;
 769 }
 770
 771 /**************************************************************************
 772  * Tell media player to start playing.
 773  **************************************************************************/
 774 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
 775 {
 776     input_thread_t * p_input_thread;
 777
 778     if( (p_input_thread = libvlc_get_input_thread( p_mi )) )
 779     {
 780         /* A thread already exists, send it a play message */
 781         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 782         vlc_object_release( p_input_thread );
 783         return 0;
 784     }
 785
 786     /* Ignore previous exception */
 787     lock(p_mi);
 788
 789     if( !p_mi->p_md )
 790     {
 791         unlock(p_mi);
 792         libvlc_printerr( "No associated media descriptor" );
 793         return -1;
 794     }
 795
 796     p_mi->p_input_thread = input_Create( p_mi,
 797                                          p_mi->p_md->p_input_item, NULL,
 798                                          p_mi->p_input_resource );
 799     if( !p_mi->p_input_thread )
 800     {
 801         unlock(p_mi);
 802         libvlc_printerr( "Not enough memory" );
 803         return -1;
 804     }
 805
 806     p_mi->p_input_resource = NULL;
 807     p_input_thread = p_mi->p_input_thread;
 808
 809     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 810     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 811     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 812
 813     if( input_Start( p_input_thread ) )
 814     {
 815         vlc_object_release( p_input_thread );
 816         p_mi->p_input_thread = NULL;
 817     }
 818
 819     unlock(p_mi);
 820     return 0;
 821 }
 822
 823 /**************************************************************************
 824  * Pause.
 825  **************************************************************************/
 826 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
 827 {
 828     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
 829     if( !p_input_thread )
 830         return;
 831
 832     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 833     if( state == libvlc_Playing || state == libvlc_Buffering )
 834     {
 835         if( libvlc_media_player_can_pause( p_mi ) )
 836             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 837         else
 838             libvlc_media_player_stop( p_mi );
 839     }
 840     else
 841         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 842
 843     vlc_object_release( p_input_thread );
 844 }
 845
 846 /**************************************************************************
 847  * Tells whether the media player is currently playing.
 848  *
 849  * Enter with lock held.
 850  **************************************************************************/
 851 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
 852 {
 853     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 854     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 855 }
 856
 857 /**************************************************************************
 858  * Stop playing.
 859  **************************************************************************/
 860 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
 861 {
 862     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 863
 864     lock(p_mi);
 865     release_input_thread( p_mi, true ); /* This will stop the input thread */
 866     unlock(p_mi);
 867
 868     /* Force to go to stopped state, in case we were in Ended, or Error
 869      * state. */
 870     if( state != libvlc_Stopped )
 871     {
 872         set_state( p_mi, libvlc_Stopped, false );
 873
 874         /* Construct and send the event */
 875         libvlc_event_t event;
 876         event.type = libvlc_MediaPlayerStopped;
 877         libvlc_event_send( p_mi->p_event_manager, &event );
 878     }
 879 }
 880
 881 /**************************************************************************
 882  * set_nsobject
 883  **************************************************************************/
 884 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 885                                         void * drawable )
 886 {
 887     assert (p_mi != NULL);
 888 #ifdef __APPLE__
 889     var_SetAddress (p_mi, "drawable-nsobject", drawable);
 890 #else
 891     (void) p_mi; (void)drawable;
 892 #endif
 893 }
 894
 895 /**************************************************************************
 896  * get_nsobject
 897  **************************************************************************/
 898 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 899 {
 900     assert (p_mi != NULL);
 901 #ifdef __APPLE__
 902     return var_GetAddress (p_mi, "drawable-nsobject");
 903 #else
 904     return NULL;
 905 #endif
 906 }
 907
 908 /**************************************************************************
 909  * set_agl
 910  **************************************************************************/
 911 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 912                                   uint32_t drawable )
 913 {
 914 #ifdef __APPLE__
 915     var_SetInteger (p_mi, "drawable-agl", drawable);
 916 #else
 917     (void) p_mi; (void)drawable;
 918 #endif
 919 }
 920
 921 /**************************************************************************
 922  * get_agl
 923  **************************************************************************/
 924 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 925 {
 926     assert (p_mi != NULL);
 927 #ifdef __APPLE__
 928     return var_GetInteger (p_mi, "drawable-agl");
 929 #else
 930     return 0;
 931 #endif
 932 }
 933
 934 /**************************************************************************
 935  * set_xwindow
 936  **************************************************************************/
 937 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 938                                       uint32_t drawable )
 939 {
 940     assert (p_mi != NULL);
 941     var_SetInteger (p_mi, "drawable-xid", drawable);
 942 }
 943
 944 /**************************************************************************
 945  * get_xwindow
 946  **************************************************************************/
 947 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 948 {
 949     return var_GetInteger (p_mi, "drawable-xid");
 950 }
 951
 952 /**************************************************************************
 953  * set_hwnd
 954  **************************************************************************/
 955 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 956                                    void *drawable )
 957 {
 958     assert (p_mi != NULL);
 959 #ifdef WIN32
 960     var_SetAddress (p_mi, "drawable-hwnd", drawable);
 961 #else
 962     (void) p_mi; (void) drawable;
 963 #endif
 964 }
 965
 966 /**************************************************************************
 967  * get_hwnd
 968  **************************************************************************/
 969 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 970 {
 971     assert (p_mi != NULL);
 972 #ifdef WIN32
 973     return var_GetAddress (p_mi, "drawable-hwnd");
 974 #else
 975     return NULL;
 976 #endif
 977 }
 978
 979 /**************************************************************************
 980  * Getters for stream information
 981  **************************************************************************/
 982 libvlc_time_t libvlc_media_player_get_length(
 983                              libvlc_media_player_t *p_mi )
 984 {
 985     input_thread_t *p_input_thread;
 986     libvlc_time_t i_time;
 987
 988     p_input_thread = libvlc_get_input_thread ( p_mi );
 989     if( !p_input_thread )
 990         return -1;
 991
 992     i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
 993     vlc_object_release( p_input_thread );
 994
 995     return i_time;
 996 }
 997
 998 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
 999 {
1000     input_thread_t *p_input_thread;
1001     libvlc_time_t i_time;
1002
1003     p_input_thread = libvlc_get_input_thread ( p_mi );
1004     if( !p_input_thread )
1005         return -1;
1006
1007     i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
1008     vlc_object_release( p_input_thread );
1009     return i_time;
1010 }
1011
1012 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
1013                                    libvlc_time_t i_time )
1014 {
1015     input_thread_t *p_input_thread;
1016
1017     p_input_thread = libvlc_get_input_thread ( p_mi );
1018     if( !p_input_thread )
1019         return;
1020
1021     var_SetTime( p_input_thread, "time", to_mtime(i_time) );
1022     vlc_object_release( p_input_thread );
1023 }
1024
1025 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
1026                                        float position )
1027 {
1028     input_thread_t *p_input_thread;
1029
1030     p_input_thread = libvlc_get_input_thread ( p_mi );
1031     if( !p_input_thread )
1032         return;
1033
1034     var_SetFloat( p_input_thread, "position", position );
1035     vlc_object_release( p_input_thread );
1036 }
1037
1038 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
1039 {
1040     input_thread_t *p_input_thread;
1041     float f_position;
1042
1043     p_input_thread = libvlc_get_input_thread ( p_mi );
1044     if( !p_input_thread )
1045         return -1.0;
1046
1047     f_position = var_GetFloat( p_input_thread, "position" );
1048     vlc_object_release( p_input_thread );
1049
1050     return f_position;
1051 }
1052
1053 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
1054                                       int chapter )
1055 {
1056     input_thread_t *p_input_thread;
1057
1058     p_input_thread = libvlc_get_input_thread ( p_mi );
1059     if( !p_input_thread )
1060         return;
1061
1062     var_SetInteger( p_input_thread, "chapter", chapter );
1063     vlc_object_release( p_input_thread );
1064 }
1065
1066 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
1067 {
1068     input_thread_t *p_input_thread;
1069     int i_chapter;
1070
1071     p_input_thread = libvlc_get_input_thread ( p_mi );
1072     if( !p_input_thread )
1073         return -1;
1074
1075     i_chapter = var_GetInteger( p_input_thread, "chapter" );
1076     vlc_object_release( p_input_thread );
1077
1078     return i_chapter;
1079 }
1080
1081 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
1082 {
1083     input_thread_t *p_input_thread;
1084     vlc_value_t val;
1085
1086     p_input_thread = libvlc_get_input_thread ( p_mi );
1087     if( !p_input_thread )
1088         return -1;
1089
1090     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
1091     vlc_object_release( p_input_thread );
1092
1093     return val.i_int;
1094 }
1095
1096 int libvlc_media_player_get_chapter_count_for_title(
1097                                  libvlc_media_player_t *p_mi,
1098                                  int i_title )
1099 {
1100     input_thread_t *p_input_thread;
1101     vlc_value_t val;
1102
1103     p_input_thread = libvlc_get_input_thread ( p_mi );
1104     if( !p_input_thread )
1105         return -1;
1106
1107     char *psz_name;
1108     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
1109     {
1110         vlc_object_release( p_input_thread );
1111         return -1;
1112     }
1113     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
1114     vlc_object_release( p_input_thread );
1115     free( psz_name );
1116
1117     return val.i_int;
1118 }
1119
1120 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
1121                                     int i_title )
1122 {
1123     input_thread_t *p_input_thread;
1124
1125     p_input_thread = libvlc_get_input_thread ( p_mi );
1126     if( !p_input_thread )
1127         return;
1128
1129     var_SetInteger( p_input_thread, "title", i_title );
1130     vlc_object_release( p_input_thread );
1131
1132     //send event
1133     libvlc_event_t event;
1134     event.type = libvlc_MediaPlayerTitleChanged;
1135     event.u.media_player_title_changed.new_title = i_title;
1136     libvlc_event_send( p_mi->p_event_manager, &event );
1137 }
1138
1139 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
1140 {
1141     input_thread_t *p_input_thread;
1142     int i_title;
1143
1144     p_input_thread = libvlc_get_input_thread ( p_mi );
1145     if( !p_input_thread )
1146         return -1;
1147
1148     i_title = var_GetInteger( p_input_thread, "title" );
1149     vlc_object_release( p_input_thread );
1150
1151     return i_title;
1152 }
1153
1154 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
1155 {
1156     input_thread_t *p_input_thread;
1157     vlc_value_t val;
1158
1159     p_input_thread = libvlc_get_input_thread ( p_mi );
1160     if( !p_input_thread )
1161         return -1;
1162
1163     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1164     vlc_object_release( p_input_thread );
1165
1166     return val.i_int;
1167 }
1168
1169 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
1170 {
1171     input_thread_t *p_input_thread;
1172
1173     p_input_thread = libvlc_get_input_thread ( p_mi );
1174     if( !p_input_thread )
1175         return;
1176
1177     int i_type = var_Type( p_input_thread, "next-chapter" );
1178     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1179                             "next-chapter":"next-title", true );
1180
1181     vlc_object_release( p_input_thread );
1182 }
1183
1184 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
1185 {
1186     input_thread_t *p_input_thread;
1187
1188     p_input_thread = libvlc_get_input_thread ( p_mi );
1189     if( !p_input_thread )
1190         return;
1191
1192     int i_type = var_Type( p_input_thread, "next-chapter" );
1193     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1194                             "prev-chapter":"prev-title", true );
1195
1196     vlc_object_release( p_input_thread );
1197 }
1198
1199 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
1200 {
1201     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1202     double f_fps = 0.0;
1203
1204     if( p_input_thread )
1205     {
1206         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1207             f_fps = 0.0;
1208         vlc_object_release( p_input_thread );
1209     }
1210     return f_fps;
1211 }
1212
1213 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1214 {
1215     bool b_will_play;
1216     input_thread_t *p_input_thread =
1217                             libvlc_get_input_thread ( p_mi );
1218     if ( !p_input_thread )
1219         return false;
1220
1221     b_will_play = !p_input_thread->b_die && !p_input_thread->b_dead;
1222     vlc_object_release( p_input_thread );
1223
1224     return b_will_play;
1225 }
1226
1227 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1228 {
1229     if (rate < 0.)
1230     {
1231         libvlc_printerr ("Playing backward not supported");
1232         return -1;
1233     }
1234
1235     var_SetFloat (p_mi, "rate", rate);
1236
1237     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1238     if( !p_input_thread )
1239         return 0;
1240     var_SetFloat( p_input_thread, "rate", rate );
1241     vlc_object_release( p_input_thread );
1242     return 0;
1243 }
1244
1245 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1246 {
1247     return var_GetFloat (p_mi, "rate");
1248 }
1249
1250 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1251 {
1252     lock(p_mi);
1253     libvlc_state_t state = p_mi->state;
1254     unlock(p_mi);
1255     return state;
1256 }
1257
1258 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1259 {
1260     input_thread_t *p_input_thread;
1261     bool b_seekable;
1262
1263     p_input_thread = libvlc_get_input_thread ( p_mi );
1264     if ( !p_input_thread )
1265         return false;
1266     b_seekable = var_GetBool( p_input_thread, "can-seek" );
1267     vlc_object_release( p_input_thread );
1268
1269     return b_seekable;
1270 }
1271
1272 /* internal function, used by audio, video */
1273 libvlc_track_description_t *
1274         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1275                                       const char *psz_variable )
1276 {
1277     input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1278     libvlc_track_description_t *p_track_description = NULL,
1279                                *p_actual, *p_previous;
1280
1281     if( !p_input )
1282         return NULL;
1283
1284     vlc_value_t val_list, text_list;
1285     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1286
1287     /* no tracks */
1288     if( val_list.p_list->i_count <= 0 )
1289         goto end;
1290
1291     p_track_description = ( libvlc_track_description_t * )
1292         malloc( sizeof( libvlc_track_description_t ) );
1293     if ( !p_track_description )
1294     {
1295         libvlc_printerr( "Not enough memory" );
1296         goto end;
1297     }
1298     p_actual = p_track_description;
1299     p_previous = NULL;
1300     for( int i = 0; i < val_list.p_list->i_count; i++ )
1301     {
1302         if( !p_actual )
1303         {
1304             p_actual = ( libvlc_track_description_t * )
1305                 malloc( sizeof( libvlc_track_description_t ) );
1306             if ( !p_actual )
1307             {
1308                 libvlc_track_description_release( p_track_description );
1309                 libvlc_printerr( "Not enough memory" );
1310                 goto end;
1311             }
1312         }
1313         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1314         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1315         p_actual->p_next = NULL;
1316         if( p_previous )
1317             p_previous->p_next = p_actual;
1318         p_previous = p_actual;
1319         p_actual =  NULL;
1320     }
1321
1322 end:
1323     var_FreeList( &val_list, &text_list );
1324     vlc_object_release( p_input );
1325
1326     return p_track_description;
1327 }
1328
1329 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1330 {
1331     libvlc_track_description_t *p_actual, *p_before;
1332     p_actual = p_td;
1333
1334     while ( p_actual )
1335     {
1336         free( p_actual->psz_name );
1337         p_before = p_actual;
1338         p_actual = p_before->p_next;
1339         free( p_before );
1340     }
1341 }
1342
1343 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1344 {
1345     input_thread_t *p_input_thread;
1346     bool b_can_pause;
1347
1348     p_input_thread = libvlc_get_input_thread ( p_mi );
1349     if ( !p_input_thread )
1350         return false;
1351     b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1352     vlc_object_release( p_input_thread );
1353
1354     return b_can_pause;
1355 }
1356
1357 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1358 {
1359     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1360     if( p_input_thread != NULL )
1361     {
1362         var_TriggerCallback( p_input_thread, "frame-next" );
1363         vlc_object_release( p_input_thread );
1364     }
1365 }