git.sesse.net Git - vlc/blob - lib/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 #include <vlc_keys.h>
  38
  39 #include "libvlc_internal.h"
  40 #include "media_internal.h" // libvlc_media_set_state()
  41 #include "media_player_internal.h"
  42
  43 /*
  44  * mapping of libvlc_navigate_mode_t to vlc_action_t
  45  */
  46 static const vlc_action_t libvlc_navigate_to_action[] =
  47 {
  48     ACTIONID_NAV_ACTIVATE,
  49     ACTIONID_NAV_UP,
  50     ACTIONID_NAV_DOWN,
  51     ACTIONID_NAV_LEFT,
  52     ACTIONID_NAV_RIGHT
  53 };
  54
  55 static const uint32_t libvlc_navigate_to_action_size =                  \
  56   sizeof( libvlc_navigate_to_action ) / sizeof( libvlc_navigate_to_action[0] );
  57
  58
  59 static int
  60 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
  61                         vlc_value_t oldval, vlc_value_t newval,
  62                         void * p_userdata );
  63 static int
  64 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
  65                         vlc_value_t oldval, vlc_value_t newval,
  66                         void * p_userdata );
  67 static int
  68 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
  69                      vlc_value_t oldval, vlc_value_t newval,
  70                      void * p_userdata );
  71
  72 static int
  73 snapshot_was_taken( vlc_object_t *p_this, char const *psz_cmd,
  74                     vlc_value_t oldval, vlc_value_t newval, void *p_data );
  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 /*
  89  * The input lock protects the input and input resource pointer.
  90  * It MUST NOT be used from callbacks.
  91  *
  92  * The object lock protects the reset, namely the media and the player state.
  93  * It can, and usually needs to be taken from callbacks.
  94  * The object lock can be acquired under the input lock... and consequently
  95  * the opposite order is STRICTLY PROHIBITED.
  96  */
  97 static inline void lock(libvlc_media_player_t *mp)
  98 {
  99     vlc_mutex_lock(&mp->object_lock);
 100 }
 101
 102 static inline void unlock(libvlc_media_player_t *mp)
 103 {
 104     vlc_mutex_unlock(&mp->object_lock);
 105 }
 106
 107 static inline void lock_input(libvlc_media_player_t *mp)
 108 {
 109     vlc_mutex_lock(&mp->input.lock);
 110 }
 111
 112 static inline void unlock_input(libvlc_media_player_t *mp)
 113 {
 114     vlc_mutex_unlock(&mp->input.lock);
 115 }
 116
 117 /*
 118  * Release the associated input thread.
 119  *
 120  * Object lock is NOT held.
 121  * Input lock is held or instance is being destroyed.
 122  */
 123 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
 124 {
 125     assert( p_mi );
 126
 127     input_thread_t *p_input_thread = p_mi->input.p_thread;
 128     if( !p_input_thread )
 129         return;
 130     p_mi->input.p_thread = NULL;
 131
 132     var_DelCallback( p_input_thread, "can-seek",
 133                      input_seekable_changed, p_mi );
 134     var_DelCallback( p_input_thread, "can-pause",
 135                     input_pausable_changed, p_mi );
 136     var_DelCallback( p_input_thread, "intf-event",
 137                      input_event_changed, p_mi );
 138
 139     /* We owned this one */
 140     input_Stop( p_input_thread, b_input_abort );
 141     input_Close( p_input_thread );
 142 }
 143
 144 /*
 145  * Retrieve the input thread. Be sure to release the object
 146  * once you are done with it. (libvlc Internal)
 147  */
 148 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi )
 149 {
 150     input_thread_t *p_input_thread;
 151
 152     assert( p_mi );
 153
 154     lock_input(p_mi);
 155     p_input_thread = p_mi->input.p_thread;
 156     if( p_input_thread )
 157         vlc_object_hold( p_input_thread );
 158     else
 159         libvlc_printerr( "No active input" );
 160     unlock_input(p_mi);
 161
 162     return p_input_thread;
 163 }
 164
 165 /*
 166  * Set the internal state of the media_player. (media player Internal)
 167  *
 168  * Function will lock the media_player.
 169  */
 170 static void set_state( libvlc_media_player_t *p_mi, libvlc_state_t state,
 171     bool b_locked )
 172 {
 173     if(!b_locked)
 174         lock(p_mi);
 175     p_mi->state = state;
 176
 177     libvlc_media_t *media = p_mi->p_md;
 178     if (media)
 179         libvlc_media_retain(media);
 180
 181     if(!b_locked)
 182         unlock(p_mi);
 183
 184     if (media)
 185     {
 186         // Also set the state of the corresponding media
 187         // This is strictly for convenience.
 188         libvlc_media_set_state(media, state);
 189
 190         libvlc_media_release(media);
 191     }
 192 }
 193
 194 static int
 195 input_seekable_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_MediaPlayerSeekableChanged;
 206     event.u.media_player_seekable_changed.new_seekable = 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_pausable_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     VLC_UNUSED(p_this);
 219     VLC_UNUSED(psz_cmd);
 220     libvlc_media_player_t * p_mi = p_userdata;
 221     libvlc_event_t event;
 222
 223     event.type = libvlc_MediaPlayerPausableChanged;
 224     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 225
 226     libvlc_event_send( p_mi->p_event_manager, &event );
 227     return VLC_SUCCESS;
 228 }
 229
 230 static int
 231 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 232                      vlc_value_t oldval, vlc_value_t newval,
 233                      void * p_userdata )
 234 {
 235     VLC_UNUSED(oldval);
 236     input_thread_t * p_input = (input_thread_t *)p_this;
 237     libvlc_media_player_t * p_mi = p_userdata;
 238     libvlc_event_t event;
 239
 240     assert( !strcmp( psz_cmd, "intf-event" ) );
 241
 242     if( newval.i_int == INPUT_EVENT_STATE )
 243     {
 244         libvlc_state_t libvlc_state;
 245
 246         switch ( var_GetInteger( p_input, "state" ) )
 247         {
 248             case INIT_S:
 249                 libvlc_state = libvlc_NothingSpecial;
 250                 event.type = libvlc_MediaPlayerNothingSpecial;
 251                 break;
 252             case OPENING_S:
 253                 libvlc_state = libvlc_Opening;
 254                 event.type = libvlc_MediaPlayerOpening;
 255                 break;
 256             case PLAYING_S:
 257                 libvlc_state = libvlc_Playing;
 258                 event.type = libvlc_MediaPlayerPlaying;
 259                 break;
 260             case PAUSE_S:
 261                 libvlc_state = libvlc_Paused;
 262                 event.type = libvlc_MediaPlayerPaused;
 263                 break;
 264             case END_S:
 265                 libvlc_state = libvlc_Ended;
 266                 event.type = libvlc_MediaPlayerEndReached;
 267                 break;
 268             case ERROR_S:
 269                 libvlc_state = libvlc_Error;
 270                 event.type = libvlc_MediaPlayerEncounteredError;
 271                 break;
 272
 273             default:
 274                 return VLC_SUCCESS;
 275         }
 276
 277         set_state( p_mi, libvlc_state, false );
 278         libvlc_event_send( p_mi->p_event_manager, &event );
 279     }
 280     else if( newval.i_int == INPUT_EVENT_ABORT )
 281     {
 282         libvlc_state_t libvlc_state = libvlc_Stopped;
 283         event.type = libvlc_MediaPlayerStopped;
 284
 285         set_state( p_mi, libvlc_state, false );
 286         libvlc_event_send( p_mi->p_event_manager, &event );
 287     }
 288     else if( newval.i_int == INPUT_EVENT_POSITION )
 289     {
 290         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 291             return VLC_SUCCESS; /* Don't send the position while stopped */
 292
 293         /* */
 294         event.type = libvlc_MediaPlayerPositionChanged;
 295         event.u.media_player_position_changed.new_position =
 296                                           var_GetFloat( p_input, "position" );
 297         libvlc_event_send( p_mi->p_event_manager, &event );
 298
 299         /* */
 300         event.type = libvlc_MediaPlayerTimeChanged;
 301         event.u.media_player_time_changed.new_time =
 302            from_mtime(var_GetTime( p_input, "time" ));
 303         libvlc_event_send( p_mi->p_event_manager, &event );
 304     }
 305     else if( newval.i_int == INPUT_EVENT_LENGTH )
 306     {
 307         event.type = libvlc_MediaPlayerLengthChanged;
 308         event.u.media_player_length_changed.new_length =
 309            from_mtime(var_GetTime( p_input, "length" ));
 310         libvlc_event_send( p_mi->p_event_manager, &event );
 311     }
 312     else if( newval.i_int == INPUT_EVENT_CACHE )
 313     {
 314         event.type = libvlc_MediaPlayerBuffering;
 315         event.u.media_player_buffering.new_cache = (int)(100 *
 316             var_GetFloat( p_input, "cache" ));
 317         libvlc_event_send( p_mi->p_event_manager, &event );
 318     }
 319     else if( newval.i_int == INPUT_EVENT_VOUT )
 320     {
 321         vout_thread_t **pp_vout;
 322         size_t i_vout;
 323         if( input_Control( p_input, INPUT_GET_VOUTS, &pp_vout, &i_vout ) )
 324         {
 325             i_vout  = 0;
 326         }
 327         else
 328         {
 329             for( size_t i = 0; i < i_vout; i++ )
 330                 vlc_object_release( pp_vout[i] );
 331             free( pp_vout );
 332         }
 333
 334         event.type = libvlc_MediaPlayerVout;
 335         event.u.media_player_vout.new_count = i_vout;
 336         libvlc_event_send( p_mi->p_event_manager, &event );
 337     }
 338
 339     return VLC_SUCCESS;
 340 }
 341
 342 /**************************************************************************
 343  * Snapshot Taken Event.
 344  *
 345  * FIXME: This snapshot API interface makes no sense in media_player.
 346  *************************************************************************/
 347 static int snapshot_was_taken(vlc_object_t *p_this, char const *psz_cmd,
 348                               vlc_value_t oldval, vlc_value_t newval, void *p_data )
 349 {
 350     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
 351
 352     libvlc_media_player_t *mp = p_data;
 353     libvlc_event_t event;
 354     event.type = libvlc_MediaPlayerSnapshotTaken;
 355     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string;
 356     libvlc_event_send(mp->p_event_manager, &event);
 357
 358     return VLC_SUCCESS;
 359 }
 360
 361 static input_thread_t *find_input (vlc_object_t *obj)
 362 {
 363     libvlc_media_player_t *mp = (libvlc_media_player_t *)obj;
 364
 365     return libvlc_get_input_thread (mp);
 366 }
 367
 368 /* */
 369 static void libvlc_media_player_destroy( libvlc_media_player_t * );
 370
 371
 372 /**************************************************************************
 373  * Create a Media Instance object.
 374  *
 375  * Refcount strategy:
 376  * - All items created by _new start with a refcount set to 1.
 377  * - Accessor _release decrease the refcount by 1, if after that
 378  *   operation the refcount is 0, the object is destroyed.
 379  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 380  *
 381  * Object locking strategy:
 382  * - No lock held while in constructor.
 383  * - When accessing any member variable this lock is held. (XXX who locks?)
 384  * - When attempting to destroy the object the lock is also held.
 385  **************************************************************************/
 386 libvlc_media_player_t *
 387 libvlc_media_player_new( libvlc_instance_t *instance )
 388 {
 389     libvlc_media_player_t * mp;
 390
 391     assert(instance);
 392
 393     mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
 394     if (unlikely(mp == NULL))
 395     {
 396         libvlc_printerr("Not enough memory");
 397         return NULL;
 398     }
 399
 400     /* Input */
 401     var_Create (mp, "rate", VLC_VAR_FLOAT|VLC_VAR_DOINHERIT);
 402
 403     /* Video */
 404     var_Create (mp, "vout", VLC_VAR_STRING|VLC_VAR_DOINHERIT);
 405     var_Create (mp, "window", VLC_VAR_STRING);
 406     var_Create (mp, "vmem-lock", VLC_VAR_ADDRESS);
 407     var_Create (mp, "vmem-unlock", VLC_VAR_ADDRESS);
 408     var_Create (mp, "vmem-display", VLC_VAR_ADDRESS);
 409     var_Create (mp, "vmem-data", VLC_VAR_ADDRESS);
 410     var_Create (mp, "vmem-setup", VLC_VAR_ADDRESS);
 411     var_Create (mp, "vmem-cleanup", VLC_VAR_ADDRESS);
 412     var_Create (mp, "vmem-chroma", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 413     var_Create (mp, "vmem-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 414     var_Create (mp, "vmem-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 415     var_Create (mp, "vmem-pitch", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 416     var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
 417 #ifdef WIN32
 418     var_Create (mp, "drawable-hwnd", VLC_VAR_INTEGER);
 419 #endif
 420 #ifdef __APPLE__
 421     var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
 422     var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
 423 #endif
 424
 425     var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
 426     var_SetBool (mp, "keyboard-events", true);
 427     var_Create (mp, "mouse-events", VLC_VAR_BOOL);
 428     var_SetBool (mp, "mouse-events", true);
 429
 430     var_Create (mp, "fullscreen", VLC_VAR_BOOL);
 431     var_Create (mp, "autoscale", VLC_VAR_BOOL);
 432     var_SetBool (mp, "autoscale", true);
 433     var_Create (mp, "scale", VLC_VAR_FLOAT);
 434     var_SetFloat (mp, "scale", 1.);
 435     var_Create (mp, "aspect-ratio", VLC_VAR_STRING);
 436     var_Create (mp, "crop", VLC_VAR_STRING);
 437     var_Create (mp, "deinterlace", VLC_VAR_INTEGER);
 438     var_Create (mp, "deinterlace-mode", VLC_VAR_STRING);
 439
 440     var_Create (mp, "vbi-page", VLC_VAR_INTEGER);
 441
 442     var_Create (mp, "marq-marquee", VLC_VAR_STRING);
 443     var_Create (mp, "marq-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 444     var_Create (mp, "marq-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 445     var_Create (mp, "marq-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 446     var_Create (mp, "marq-refresh", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 447     var_Create (mp, "marq-size", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 448     var_Create (mp, "marq-timeout", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 449     var_Create (mp, "marq-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 450     var_Create (mp, "marq-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 451
 452     var_Create (mp, "logo-file", VLC_VAR_STRING);
 453     var_Create (mp, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 454     var_Create (mp, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 455     var_Create (mp, "logo-delay", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 456     var_Create (mp, "logo-repeat", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 457     var_Create (mp, "logo-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 458     var_Create (mp, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 459
 460     var_Create (mp, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 461     var_Create (mp, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 462     var_Create (mp, "hue", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 463     var_Create (mp, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 464     var_Create (mp, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 465
 466      /* Audio */
 467     var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 468     var_Create (mp, "mute", VLC_VAR_BOOL);
 469     var_Create (mp, "volume", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 470     var_Create (mp, "find-input-callback", VLC_VAR_ADDRESS);
 471     var_SetAddress (mp, "find-input-callback", find_input);
 472     var_Create (mp, "amem-data", VLC_VAR_ADDRESS);
 473     var_Create (mp, "amem-setup", VLC_VAR_ADDRESS);
 474     var_Create (mp, "amem-close", VLC_VAR_ADDRESS);
 475     var_Create (mp, "amem-play", VLC_VAR_ADDRESS);
 476     var_Create (mp, "amem-pause", VLC_VAR_ADDRESS);
 477     var_Create (mp, "amem-resume", VLC_VAR_ADDRESS);
 478     var_Create (mp, "amem-flush", VLC_VAR_ADDRESS);
 479     var_Create (mp, "amem-drain", VLC_VAR_ADDRESS);
 480     var_Create (mp, "amem-set-volume", VLC_VAR_ADDRESS);
 481     var_Create (mp, "amem-format", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 482     var_Create (mp, "amem-rate", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 483     var_Create (mp, "amem-channels", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 484
 485     mp->p_md = NULL;
 486     mp->state = libvlc_NothingSpecial;
 487     mp->p_libvlc_instance = instance;
 488     mp->input.p_thread = NULL;
 489     mp->input.p_resource = NULL;
 490     vlc_mutex_init (&mp->input.lock);
 491     mp->i_refcount = 1;
 492     mp->p_event_manager = libvlc_event_manager_new(mp, instance);
 493     if (unlikely(mp->p_event_manager == NULL))
 494     {
 495         vlc_object_release(mp);
 496         return NULL;
 497     }
 498     vlc_mutex_init(&mp->object_lock);
 499
 500     register_event(mp, NothingSpecial);
 501     register_event(mp, Opening);
 502     register_event(mp, Buffering);
 503     register_event(mp, Playing);
 504     register_event(mp, Paused);
 505     register_event(mp, Stopped);
 506     register_event(mp, Forward);
 507     register_event(mp, Backward);
 508     register_event(mp, EndReached);
 509     register_event(mp, EncounteredError);
 510     register_event(mp, SeekableChanged);
 511
 512     register_event(mp, PositionChanged);
 513     register_event(mp, TimeChanged);
 514     register_event(mp, LengthChanged);
 515     register_event(mp, TitleChanged);
 516     register_event(mp, PausableChanged);
 517
 518     register_event(mp, Vout);
 519
 520     /* Snapshot initialization */
 521     register_event(mp, SnapshotTaken);
 522
 523     register_event(mp, MediaChanged);
 524
 525     /* Attach a var callback to the global object to provide the glue between
 526      * vout_thread that generates the event and media_player that re-emits it
 527      * with its own event manager
 528      *
 529      * FIXME: It's unclear why we want to put this in public API, and why we
 530      * want to expose it in such a limiting and ugly way.
 531      */
 532     var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
 533
 534     libvlc_retain(instance);
 535     return mp;
 536 }
 537
 538 /**************************************************************************
 539  * Create a Media Instance object with a media descriptor.
 540  **************************************************************************/
 541 libvlc_media_player_t *
 542 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
 543 {
 544     libvlc_media_player_t * p_mi;
 545
 546     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
 547     if( !p_mi )
 548         return NULL;
 549
 550     libvlc_media_retain( p_md );
 551     p_mi->p_md = p_md;
 552
 553     return p_mi;
 554 }
 555
 556 /**************************************************************************
 557  * Destroy a Media Instance object (libvlc internal)
 558  *
 559  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 560  **************************************************************************/
 561 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 562 {
 563     assert( p_mi );
 564
 565     /* Detach Callback from the main libvlc object */
 566     var_DelCallback( p_mi->p_libvlc,
 567                      "snapshot-file", snapshot_was_taken, p_mi );
 568
 569     /* No need for lock_input() because no other threads knows us anymore */
 570     if( p_mi->input.p_thread )
 571         release_input_thread(p_mi, true);
 572     if( p_mi->input.p_resource )
 573     {
 574         input_resource_Terminate( p_mi->input.p_resource );
 575         input_resource_Release( p_mi->input.p_resource );
 576         p_mi->input.p_resource = NULL;
 577     }
 578     vlc_mutex_destroy( &p_mi->input.lock );
 579
 580     libvlc_event_manager_release( p_mi->p_event_manager );
 581     libvlc_media_release( p_mi->p_md );
 582     vlc_mutex_destroy( &p_mi->object_lock );
 583
 584     libvlc_instance_t *instance = p_mi->p_libvlc_instance;
 585     vlc_object_release( p_mi );
 586     libvlc_release(instance);
 587 }
 588
 589 /**************************************************************************
 590  * Release a Media Instance object.
 591  *
 592  * Function does the locking.
 593  **************************************************************************/
 594 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 595 {
 596     bool destroy;
 597
 598     assert( p_mi );
 599     lock(p_mi);
 600     destroy = !--p_mi->i_refcount;
 601     unlock(p_mi);
 602
 603     if( destroy )
 604         libvlc_media_player_destroy( p_mi );
 605 }
 606
 607 /**************************************************************************
 608  * Retain a Media Instance object.
 609  *
 610  * Caller must hold the lock.
 611  **************************************************************************/
 612 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 613 {
 614     assert( p_mi );
 615
 616     lock(p_mi);
 617     p_mi->i_refcount++;
 618     unlock(p_mi);
 619 }
 620
 621 /**************************************************************************
 622  * Set the Media descriptor associated with the instance.
 623  *
 624  * Enter without lock -- function will lock the object.
 625  **************************************************************************/
 626 void libvlc_media_player_set_media(
 627                             libvlc_media_player_t *p_mi,
 628                             libvlc_media_t *p_md )
 629 {
 630     lock_input(p_mi);
 631
 632     /* FIXME I am not sure if it is a user request or on die(eof/error)
 633      * request here */
 634     release_input_thread( p_mi,
 635                           p_mi->input.p_thread &&
 636                           !p_mi->input.p_thread->b_eof &&
 637                           !p_mi->input.p_thread->b_error );
 638
 639     lock( p_mi );
 640     set_state( p_mi, libvlc_NothingSpecial, true );
 641     unlock_input( p_mi );
 642
 643     libvlc_media_release( p_mi->p_md );
 644
 645     if( !p_md )
 646     {
 647         p_mi->p_md = NULL;
 648         unlock(p_mi);
 649         return; /* It is ok to pass a NULL md */
 650     }
 651
 652     libvlc_media_retain( p_md );
 653     p_mi->p_md = p_md;
 654
 655     /* The policy here is to ignore that we were created using a different
 656      * libvlc_instance, because we don't really care */
 657     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 658
 659     unlock(p_mi);
 660
 661     /* Send an event for the newly available media */
 662     libvlc_event_t event;
 663     event.type = libvlc_MediaPlayerMediaChanged;
 664     event.u.media_player_media_changed.new_media = p_md;
 665     libvlc_event_send( p_mi->p_event_manager, &event );
 666
 667 }
 668
 669 /**************************************************************************
 670  * Get the Media descriptor associated with the instance.
 671  **************************************************************************/
 672 libvlc_media_t *
 673 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
 674 {
 675     libvlc_media_t *p_m;
 676
 677     lock(p_mi);
 678     p_m = p_mi->p_md;
 679     if( p_m )
 680         libvlc_media_retain( p_mi->p_md );
 681     unlock(p_mi);
 682     return p_mi->p_md;
 683 }
 684
 685 /**************************************************************************
 686  * Get the event Manager.
 687  **************************************************************************/
 688 libvlc_event_manager_t *
 689 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
 690 {
 691     return p_mi->p_event_manager;
 692 }
 693
 694 /**************************************************************************
 695  * Tell media player to start playing.
 696  **************************************************************************/
 697 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
 698 {
 699     lock_input( p_mi );
 700
 701     input_thread_t *p_input_thread = p_mi->input.p_thread;
 702     if( p_input_thread )
 703     {
 704         /* A thread already exists, send it a play message */
 705         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 706         unlock_input( p_mi );
 707         return 0;
 708     }
 709
 710     /* Ignore previous exception */
 711     lock(p_mi);
 712
 713     if( !p_mi->p_md )
 714     {
 715         unlock(p_mi);
 716         unlock_input( p_mi );
 717         libvlc_printerr( "No associated media descriptor" );
 718         return -1;
 719     }
 720
 721     if( !p_mi->input.p_resource )
 722         p_mi->input.p_resource = input_resource_New( VLC_OBJECT( p_mi ) );
 723     p_input_thread = input_Create( p_mi, p_mi->p_md->p_input_item, NULL,
 724                                    p_mi->input.p_resource );
 725     unlock(p_mi);
 726     if( !p_input_thread )
 727     {
 728         unlock_input(p_mi);
 729         libvlc_printerr( "Not enough memory" );
 730         return -1;
 731     }
 732
 733     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 734     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 735     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 736
 737     if( input_Start( p_input_thread ) )
 738     {
 739         unlock_input(p_mi);
 740         var_DelCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 741         var_DelCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 742         var_DelCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 743         vlc_object_release( p_input_thread );
 744         libvlc_printerr( "Input initialization failure" );
 745         return -1;
 746     }
 747     p_mi->input.p_thread = p_input_thread;
 748     unlock_input(p_mi);
 749     return 0;
 750 }
 751
 752 void libvlc_media_player_set_pause( libvlc_media_player_t *p_mi, int paused )
 753 {
 754     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
 755     if( !p_input_thread )
 756         return;
 757
 758     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 759     if( state == libvlc_Playing || state == libvlc_Buffering )
 760     {
 761         if( paused )
 762         {
 763             if( libvlc_media_player_can_pause( p_mi ) )
 764                 input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 765             else
 766                 libvlc_media_player_stop( p_mi );
 767         }
 768     }
 769     else
 770     {
 771         if( !paused )
 772             input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 773     }
 774
 775     vlc_object_release( p_input_thread );
 776 }
 777
 778 /**************************************************************************
 779  * Toggle pause.
 780  **************************************************************************/
 781 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
 782 {
 783     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 784     bool playing = (state == libvlc_Playing || state == libvlc_Buffering);
 785
 786     libvlc_media_player_set_pause( p_mi, playing );
 787 }
 788
 789 /**************************************************************************
 790  * Tells whether the media player is currently playing.
 791  *
 792  * Enter with lock held.
 793  **************************************************************************/
 794 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
 795 {
 796     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 797     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 798 }
 799
 800 /**************************************************************************
 801  * Stop playing.
 802  **************************************************************************/
 803 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
 804 {
 805     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 806
 807     lock_input(p_mi);
 808     release_input_thread( p_mi, true ); /* This will stop the input thread */
 809
 810     /* Force to go to stopped state, in case we were in Ended, or Error
 811      * state. */
 812     if( state != libvlc_Stopped )
 813     {
 814         set_state( p_mi, libvlc_Stopped, false );
 815
 816         /* Construct and send the event */
 817         libvlc_event_t event;
 818         event.type = libvlc_MediaPlayerStopped;
 819         libvlc_event_send( p_mi->p_event_manager, &event );
 820     }
 821
 822     if( p_mi->input.p_resource != NULL )
 823         input_resource_Terminate( p_mi->input.p_resource );
 824     unlock_input(p_mi);
 825 }
 826
 827
 828 void libvlc_video_set_callbacks( libvlc_media_player_t *mp,
 829     void *(*lock_cb) (void *, void **),
 830     void (*unlock_cb) (void *, void *, void *const *),
 831     void (*display_cb) (void *, void *),
 832     void *opaque )
 833 {
 834     var_SetAddress( mp, "vmem-lock", lock_cb );
 835     var_SetAddress( mp, "vmem-unlock", unlock_cb );
 836     var_SetAddress( mp, "vmem-display", display_cb );
 837     var_SetAddress( mp, "vmem-data", opaque );
 838     var_SetString( mp, "vout", "vmem" );
 839 }
 840
 841 void libvlc_video_set_format_callbacks( libvlc_media_player_t *mp,
 842                                         libvlc_video_format_cb setup,
 843                                         libvlc_video_cleanup_cb cleanup )
 844 {
 845     var_SetAddress( mp, "vmem-setup", setup );
 846     var_SetAddress( mp, "vmem-cleanup", cleanup );
 847 }
 848
 849 void libvlc_video_set_format( libvlc_media_player_t *mp, const char *chroma,
 850                               unsigned width, unsigned height, unsigned pitch )
 851 {
 852     var_SetString( mp, "vmem-chroma", chroma );
 853     var_SetInteger( mp, "vmem-width", width );
 854     var_SetInteger( mp, "vmem-height", height );
 855     var_SetInteger( mp, "vmem-pitch", pitch );
 856 }
 857
 858 /**************************************************************************
 859  * set_nsobject
 860  **************************************************************************/
 861 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 862                                         void * drawable )
 863 {
 864     assert (p_mi != NULL);
 865 #ifdef __APPLE__
 866     var_SetAddress (p_mi, "drawable-nsobject", drawable);
 867 #else
 868     (void) p_mi; (void)drawable;
 869 #endif
 870 }
 871
 872 /**************************************************************************
 873  * get_nsobject
 874  **************************************************************************/
 875 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 876 {
 877     assert (p_mi != NULL);
 878 #ifdef __APPLE__
 879     return var_GetAddress (p_mi, "drawable-nsobject");
 880 #else
 881     return NULL;
 882 #endif
 883 }
 884
 885 /**************************************************************************
 886  * set_agl
 887  **************************************************************************/
 888 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 889                                   uint32_t drawable )
 890 {
 891 #ifdef __APPLE__
 892     var_SetInteger (p_mi, "drawable-agl", drawable);
 893 #else
 894     (void) p_mi; (void)drawable;
 895 #endif
 896 }
 897
 898 /**************************************************************************
 899  * get_agl
 900  **************************************************************************/
 901 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 902 {
 903     assert (p_mi != NULL);
 904 #ifdef __APPLE__
 905     return var_GetInteger (p_mi, "drawable-agl");
 906 #else
 907     return 0;
 908 #endif
 909 }
 910
 911 /**************************************************************************
 912  * set_xwindow
 913  **************************************************************************/
 914 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 915                                       uint32_t drawable )
 916 {
 917     assert (p_mi != NULL);
 918
 919     var_SetString (p_mi, "vout", drawable ? "xid" : "any");
 920     var_SetString (p_mi, "window", drawable ? "embed-xid,any" : "any");
 921     var_SetInteger (p_mi, "drawable-xid", drawable);
 922 }
 923
 924 /**************************************************************************
 925  * get_xwindow
 926  **************************************************************************/
 927 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 928 {
 929     return var_GetInteger (p_mi, "drawable-xid");
 930 }
 931
 932 /**************************************************************************
 933  * set_hwnd
 934  **************************************************************************/
 935 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 936                                    void *drawable )
 937 {
 938     assert (p_mi != NULL);
 939 #ifdef WIN32
 940     var_SetString (p_mi, "window",
 941                    (drawable != NULL) ? "embed-hwnd,any" : "");
 942     var_SetInteger (p_mi, "drawable-hwnd", (uintptr_t)drawable);
 943 #else
 944     (void) p_mi; (void) drawable;
 945 #endif
 946 }
 947
 948 /**************************************************************************
 949  * get_hwnd
 950  **************************************************************************/
 951 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 952 {
 953     assert (p_mi != NULL);
 954 #ifdef WIN32
 955     return (void *)(uintptr_t)var_GetInteger (p_mi, "drawable-hwnd");
 956 #else
 957     return NULL;
 958 #endif
 959 }
 960
 961 void libvlc_audio_set_callbacks( libvlc_media_player_t *mp,
 962                                  libvlc_audio_play_cb play_cb,
 963                                  libvlc_audio_pause_cb pause_cb,
 964                                  libvlc_audio_resume_cb resume_cb,
 965                                  libvlc_audio_flush_cb flush_cb,
 966                                  libvlc_audio_drain_cb drain_cb,
 967                                  void *opaque )
 968 {
 969     var_SetAddress( mp, "amem-play", play_cb );
 970     var_SetAddress( mp, "amem-pause", pause_cb );
 971     var_SetAddress( mp, "amem-resume", resume_cb );
 972     var_SetAddress( mp, "amem-flush", flush_cb );
 973     var_SetAddress( mp, "amem-drain", drain_cb );
 974     var_SetAddress( mp, "amem-data", opaque );
 975     var_SetString( mp, "aout", "amem,none" );
 976 }
 977
 978 void libvlc_audio_set_volume_callback( libvlc_media_player_t *mp,
 979                                        libvlc_audio_set_volume_cb cb )
 980 {
 981     var_SetAddress( mp, "amem-set-volume", cb );
 982 }
 983
 984 void libvlc_audio_set_format_callbacks( libvlc_media_player_t *mp,
 985                                         libvlc_audio_setup_cb setup,
 986                                         libvlc_audio_cleanup_cb cleanup )
 987 {
 988     var_SetAddress( mp, "amem-setup", setup );
 989     var_SetAddress( mp, "amem-cleanup", cleanup );
 990 }
 991
 992 void libvlc_audio_set_format( libvlc_media_player_t *mp, const char *format,
 993                               unsigned rate, unsigned channels )
 994 {
 995     var_SetString( mp, "amem-format", format );
 996     var_SetInteger( mp, "amem-rate", rate );
 997     var_SetInteger( mp, "amem-channels", channels );
 998 }
 999
1000
1001 /**************************************************************************
1002  * Getters for stream information
1003  **************************************************************************/
1004 libvlc_time_t libvlc_media_player_get_length(
1005                              libvlc_media_player_t *p_mi )
1006 {
1007     input_thread_t *p_input_thread;
1008     libvlc_time_t i_time;
1009
1010     p_input_thread = libvlc_get_input_thread ( p_mi );
1011     if( !p_input_thread )
1012         return -1;
1013
1014     i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
1015     vlc_object_release( p_input_thread );
1016
1017     return i_time;
1018 }
1019
1020 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
1021 {
1022     input_thread_t *p_input_thread;
1023     libvlc_time_t i_time;
1024
1025     p_input_thread = libvlc_get_input_thread ( p_mi );
1026     if( !p_input_thread )
1027         return -1;
1028
1029     i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
1030     vlc_object_release( p_input_thread );
1031     return i_time;
1032 }
1033
1034 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
1035                                    libvlc_time_t i_time )
1036 {
1037     input_thread_t *p_input_thread;
1038
1039     p_input_thread = libvlc_get_input_thread ( p_mi );
1040     if( !p_input_thread )
1041         return;
1042
1043     var_SetTime( p_input_thread, "time", to_mtime(i_time) );
1044     vlc_object_release( p_input_thread );
1045 }
1046
1047 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
1048                                        float position )
1049 {
1050     input_thread_t *p_input_thread;
1051
1052     p_input_thread = libvlc_get_input_thread ( p_mi );
1053     if( !p_input_thread )
1054         return;
1055
1056     var_SetFloat( p_input_thread, "position", position );
1057     vlc_object_release( p_input_thread );
1058 }
1059
1060 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
1061 {
1062     input_thread_t *p_input_thread;
1063     float f_position;
1064
1065     p_input_thread = libvlc_get_input_thread ( p_mi );
1066     if( !p_input_thread )
1067         return -1.0;
1068
1069     f_position = var_GetFloat( p_input_thread, "position" );
1070     vlc_object_release( p_input_thread );
1071
1072     return f_position;
1073 }
1074
1075 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
1076                                       int chapter )
1077 {
1078     input_thread_t *p_input_thread;
1079
1080     p_input_thread = libvlc_get_input_thread ( p_mi );
1081     if( !p_input_thread )
1082         return;
1083
1084     var_SetInteger( p_input_thread, "chapter", chapter );
1085     vlc_object_release( p_input_thread );
1086 }
1087
1088 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
1089 {
1090     input_thread_t *p_input_thread;
1091     int i_chapter;
1092
1093     p_input_thread = libvlc_get_input_thread ( p_mi );
1094     if( !p_input_thread )
1095         return -1;
1096
1097     i_chapter = var_GetInteger( p_input_thread, "chapter" );
1098     vlc_object_release( p_input_thread );
1099
1100     return i_chapter;
1101 }
1102
1103 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
1104 {
1105     input_thread_t *p_input_thread;
1106     vlc_value_t val;
1107
1108     p_input_thread = libvlc_get_input_thread ( p_mi );
1109     if( !p_input_thread )
1110         return -1;
1111
1112     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
1113     vlc_object_release( p_input_thread );
1114
1115     return val.i_int;
1116 }
1117
1118 int libvlc_media_player_get_chapter_count_for_title(
1119                                  libvlc_media_player_t *p_mi,
1120                                  int i_title )
1121 {
1122     input_thread_t *p_input_thread;
1123     vlc_value_t val;
1124
1125     p_input_thread = libvlc_get_input_thread ( p_mi );
1126     if( !p_input_thread )
1127         return -1;
1128
1129     char *psz_name;
1130     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
1131     {
1132         vlc_object_release( p_input_thread );
1133         return -1;
1134     }
1135     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
1136     vlc_object_release( p_input_thread );
1137     free( psz_name );
1138
1139     return val.i_int;
1140 }
1141
1142 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
1143                                     int i_title )
1144 {
1145     input_thread_t *p_input_thread;
1146
1147     p_input_thread = libvlc_get_input_thread ( p_mi );
1148     if( !p_input_thread )
1149         return;
1150
1151     var_SetInteger( p_input_thread, "title", i_title );
1152     vlc_object_release( p_input_thread );
1153
1154     //send event
1155     libvlc_event_t event;
1156     event.type = libvlc_MediaPlayerTitleChanged;
1157     event.u.media_player_title_changed.new_title = i_title;
1158     libvlc_event_send( p_mi->p_event_manager, &event );
1159 }
1160
1161 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
1162 {
1163     input_thread_t *p_input_thread;
1164     int i_title;
1165
1166     p_input_thread = libvlc_get_input_thread ( p_mi );
1167     if( !p_input_thread )
1168         return -1;
1169
1170     i_title = var_GetInteger( p_input_thread, "title" );
1171     vlc_object_release( p_input_thread );
1172
1173     return i_title;
1174 }
1175
1176 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
1177 {
1178     input_thread_t *p_input_thread;
1179     vlc_value_t val;
1180
1181     p_input_thread = libvlc_get_input_thread ( p_mi );
1182     if( !p_input_thread )
1183         return -1;
1184
1185     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1186     vlc_object_release( p_input_thread );
1187
1188     return val.i_int;
1189 }
1190
1191 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
1192 {
1193     input_thread_t *p_input_thread;
1194
1195     p_input_thread = libvlc_get_input_thread ( p_mi );
1196     if( !p_input_thread )
1197         return;
1198
1199     int i_type = var_Type( p_input_thread, "next-chapter" );
1200     var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1201                             "next-chapter":"next-title" );
1202
1203     vlc_object_release( p_input_thread );
1204 }
1205
1206 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
1207 {
1208     input_thread_t *p_input_thread;
1209
1210     p_input_thread = libvlc_get_input_thread ( p_mi );
1211     if( !p_input_thread )
1212         return;
1213
1214     int i_type = var_Type( p_input_thread, "next-chapter" );
1215     var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1216                             "prev-chapter":"prev-title" );
1217
1218     vlc_object_release( p_input_thread );
1219 }
1220
1221 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
1222 {
1223     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1224     double f_fps = 0.0;
1225
1226     if( p_input_thread )
1227     {
1228         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1229             f_fps = 0.0;
1230         vlc_object_release( p_input_thread );
1231     }
1232     return f_fps;
1233 }
1234
1235 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1236 {
1237     bool b_will_play;
1238     input_thread_t *p_input_thread =
1239                             libvlc_get_input_thread ( p_mi );
1240     if ( !p_input_thread )
1241         return false;
1242
1243     b_will_play = !p_input_thread->b_die && !p_input_thread->b_dead;
1244     vlc_object_release( p_input_thread );
1245
1246     return b_will_play;
1247 }
1248
1249 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1250 {
1251     if (rate < 0.)
1252     {
1253         libvlc_printerr ("Playing backward not supported");
1254         return -1;
1255     }
1256
1257     var_SetFloat (p_mi, "rate", rate);
1258
1259     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1260     if( !p_input_thread )
1261         return 0;
1262     var_SetFloat( p_input_thread, "rate", rate );
1263     vlc_object_release( p_input_thread );
1264     return 0;
1265 }
1266
1267 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1268 {
1269     return var_GetFloat (p_mi, "rate");
1270 }
1271
1272 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1273 {
1274     lock(p_mi);
1275     libvlc_state_t state = p_mi->state;
1276     unlock(p_mi);
1277     return state;
1278 }
1279
1280 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1281 {
1282     input_thread_t *p_input_thread;
1283     bool b_seekable;
1284
1285     p_input_thread = libvlc_get_input_thread ( p_mi );
1286     if ( !p_input_thread )
1287         return false;
1288     b_seekable = var_GetBool( p_input_thread, "can-seek" );
1289     vlc_object_release( p_input_thread );
1290
1291     return b_seekable;
1292 }
1293
1294 void libvlc_media_player_navigate( libvlc_media_player_t* p_mi,
1295                                    unsigned navigate )
1296 {
1297     input_thread_t *p_input_thread;
1298
1299     if ( navigate > libvlc_navigate_to_action_size)
1300       return;
1301
1302     p_input_thread = libvlc_get_input_thread ( p_mi );
1303     if ( !p_input_thread )
1304       return;
1305
1306     var_SetInteger( p_mi->p_libvlc_instance->p_libvlc_int,
1307                     "key-action", libvlc_navigate_to_action[navigate] );
1308
1309     vlc_object_release( p_input_thread );
1310 }
1311
1312 /* internal function, used by audio, video */
1313 libvlc_track_description_t *
1314         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1315                                       const char *psz_variable )
1316 {
1317     input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1318     libvlc_track_description_t *p_track_description = NULL,
1319                                *p_actual, *p_previous;
1320
1321     if( !p_input )
1322         return NULL;
1323
1324     vlc_value_t val_list, text_list;
1325     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1326
1327     /* no tracks */
1328     if( val_list.p_list->i_count <= 0 )
1329         goto end;
1330
1331     p_track_description = ( libvlc_track_description_t * )
1332         malloc( sizeof( libvlc_track_description_t ) );
1333     if ( !p_track_description )
1334     {
1335         libvlc_printerr( "Not enough memory" );
1336         goto end;
1337     }
1338     p_actual = p_track_description;
1339     p_previous = NULL;
1340     for( int i = 0; i < val_list.p_list->i_count; i++ )
1341     {
1342         if( !p_actual )
1343         {
1344             p_actual = ( libvlc_track_description_t * )
1345                 malloc( sizeof( libvlc_track_description_t ) );
1346             if ( !p_actual )
1347             {
1348                 libvlc_track_description_release( p_track_description );
1349                 libvlc_printerr( "Not enough memory" );
1350                 goto end;
1351             }
1352         }
1353         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1354         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1355         p_actual->p_next = NULL;
1356         if( p_previous )
1357             p_previous->p_next = p_actual;
1358         p_previous = p_actual;
1359         p_actual =  NULL;
1360     }
1361
1362 end:
1363     var_FreeList( &val_list, &text_list );
1364     vlc_object_release( p_input );
1365
1366     return p_track_description;
1367 }
1368
1369 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1370 {
1371     libvlc_track_description_t *p_actual, *p_before;
1372     p_actual = p_td;
1373
1374     while ( p_actual )
1375     {
1376         free( p_actual->psz_name );
1377         p_before = p_actual;
1378         p_actual = p_before->p_next;
1379         free( p_before );
1380     }
1381 }
1382
1383 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1384 {
1385     input_thread_t *p_input_thread;
1386     bool b_can_pause;
1387
1388     p_input_thread = libvlc_get_input_thread ( p_mi );
1389     if ( !p_input_thread )
1390         return false;
1391     b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1392     vlc_object_release( p_input_thread );
1393
1394     return b_can_pause;
1395 }
1396
1397 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1398 {
1399     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1400     if( p_input_thread != NULL )
1401     {
1402         var_TriggerCallback( p_input_thread, "frame-next" );
1403         vlc_object_release( p_input_thread );
1404     }
1405 }