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 #include <vlc_keys.h>
  38
  39 #include "libvlc.h"
  40
  41 #include "libvlc_internal.h"
  42 #include "media_internal.h" // libvlc_media_set_state()
  43 #include "media_player_internal.h"
  44
  45 /*
  46  * mapping of libvlc_navigate_mode_t to vlc_key_t
  47  */
  48 static const vlc_key_t libvlc_navigate_to_action[] =
  49   {
  50     ACTIONID_NAV_ACTIVATE,
  51     ACTIONID_NAV_UP,
  52     ACTIONID_NAV_DOWN,
  53     ACTIONID_NAV_LEFT,
  54     ACTIONID_NAV_RIGHT
  55   };
  56
  57 static const uint32_t libvlc_navigate_to_action_size =                  \
  58   sizeof( libvlc_navigate_to_action ) / sizeof( libvlc_navigate_to_action[0] );
  59
  60
  61 static int
  62 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
  63                         vlc_value_t oldval, vlc_value_t newval,
  64                         void * p_userdata );
  65 static int
  66 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
  67                         vlc_value_t oldval, vlc_value_t newval,
  68                         void * p_userdata );
  69 static int
  70 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
  71                      vlc_value_t oldval, vlc_value_t newval,
  72                      void * p_userdata );
  73
  74 static int
  75 snapshot_was_taken( vlc_object_t *p_this, char const *psz_cmd,
  76                     vlc_value_t oldval, vlc_value_t newval, void *p_data );
  77
  78 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi );
  79
  80 /*
  81  * Shortcuts
  82  */
  83
  84 #define register_event(a, b) __register_event(a, libvlc_MediaPlayer ## b)
  85 static inline void __register_event(libvlc_media_player_t *mp, libvlc_event_type_t type)
  86 {
  87     libvlc_event_manager_register_event_type(mp->p_event_manager, type);
  88 }
  89
  90 /*
  91  * The input lock protects the input and input resource pointer.
  92  * It MUST NOT be used from callbacks.
  93  *
  94  * The object lock protects the reset, namely the media and the player state.
  95  * It can, and usually needs to be taken from callbacks.
  96  * The object lock can be acquired under the input lock... and consequently
  97  * the opposite order is STRICTLY PROHIBITED.
  98  */
  99 static inline void lock(libvlc_media_player_t *mp)
 100 {
 101     vlc_mutex_lock(&mp->object_lock);
 102 }
 103
 104 static inline void unlock(libvlc_media_player_t *mp)
 105 {
 106     vlc_mutex_unlock(&mp->object_lock);
 107 }
 108
 109 static inline void lock_input(libvlc_media_player_t *mp)
 110 {
 111     vlc_mutex_lock(&mp->input.lock);
 112 }
 113
 114 static inline void unlock_input(libvlc_media_player_t *mp)
 115 {
 116     vlc_mutex_unlock(&mp->input.lock);
 117 }
 118
 119 /*
 120  * Release the associated input thread.
 121  *
 122  * Object lock is NOT held.
 123  * Input lock is held or instance is being destroyed.
 124  */
 125 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
 126 {
 127     assert( p_mi );
 128
 129     input_thread_t *p_input_thread = p_mi->input.p_thread;
 130     if( !p_input_thread )
 131         return;
 132
 133     var_DelCallback( p_input_thread, "can-seek",
 134                      input_seekable_changed, p_mi );
 135     var_DelCallback( p_input_thread, "can-pause",
 136                     input_pausable_changed, p_mi );
 137     var_DelCallback( p_input_thread, "intf-event",
 138                      input_event_changed, p_mi );
 139
 140     /* We owned this one */
 141     input_Stop( p_input_thread, b_input_abort );
 142
 143     vlc_thread_join( p_input_thread );
 144
 145     assert( p_input_thread->b_dead );
 146
 147     p_mi->input.p_thread = NULL;
 148     vlc_object_release( p_input_thread );
 149 }
 150
 151 /*
 152  * Retrieve the input thread. Be sure to release the object
 153  * once you are done with it. (libvlc Internal)
 154  */
 155 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi )
 156 {
 157     input_thread_t *p_input_thread;
 158
 159     assert( p_mi );
 160
 161     lock_input(p_mi);
 162     p_input_thread = p_mi->input.p_thread;
 163     if( p_input_thread )
 164         vlc_object_hold( p_input_thread );
 165     else
 166         libvlc_printerr( "No active input" );
 167     unlock_input(p_mi);
 168
 169     return p_input_thread;
 170 }
 171
 172 /*
 173  * Set the internal state of the media_player. (media player Internal)
 174  *
 175  * Function will lock the media_player.
 176  */
 177 static void set_state( libvlc_media_player_t *p_mi, libvlc_state_t state,
 178     bool b_locked )
 179 {
 180     if(!b_locked)
 181         lock(p_mi);
 182     p_mi->state = state;
 183
 184     libvlc_media_t *media = p_mi->p_md;
 185     if (media)
 186         libvlc_media_retain(media);
 187
 188     if(!b_locked)
 189         unlock(p_mi);
 190
 191     if (media)
 192     {
 193         // Also set the state of the corresponding media
 194         // This is strictly for convenience.
 195         libvlc_media_set_state(media, state);
 196
 197         libvlc_media_release(media);
 198     }
 199 }
 200
 201 static int
 202 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 203                         vlc_value_t oldval, vlc_value_t newval,
 204                         void * p_userdata )
 205 {
 206     VLC_UNUSED(oldval);
 207     VLC_UNUSED(p_this);
 208     VLC_UNUSED(psz_cmd);
 209     libvlc_media_player_t * p_mi = p_userdata;
 210     libvlc_event_t event;
 211
 212     event.type = libvlc_MediaPlayerSeekableChanged;
 213     event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
 214
 215     libvlc_event_send( p_mi->p_event_manager, &event );
 216     return VLC_SUCCESS;
 217 }
 218
 219 static int
 220 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 221                         vlc_value_t oldval, vlc_value_t newval,
 222                         void * p_userdata )
 223 {
 224     VLC_UNUSED(oldval);
 225     VLC_UNUSED(p_this);
 226     VLC_UNUSED(psz_cmd);
 227     libvlc_media_player_t * p_mi = p_userdata;
 228     libvlc_event_t event;
 229
 230     event.type = libvlc_MediaPlayerPausableChanged;
 231     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 232
 233     libvlc_event_send( p_mi->p_event_manager, &event );
 234     return VLC_SUCCESS;
 235 }
 236
 237 static int
 238 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 239                      vlc_value_t oldval, vlc_value_t newval,
 240                      void * p_userdata )
 241 {
 242     VLC_UNUSED(oldval);
 243     input_thread_t * p_input = (input_thread_t *)p_this;
 244     libvlc_media_player_t * p_mi = p_userdata;
 245     libvlc_event_t event;
 246
 247     assert( !strcmp( psz_cmd, "intf-event" ) );
 248
 249     if( newval.i_int == INPUT_EVENT_STATE )
 250     {
 251         libvlc_state_t libvlc_state;
 252
 253         switch ( var_GetInteger( p_input, "state" ) )
 254         {
 255             case INIT_S:
 256                 libvlc_state = libvlc_NothingSpecial;
 257                 event.type = libvlc_MediaPlayerNothingSpecial;
 258                 break;
 259             case OPENING_S:
 260                 libvlc_state = libvlc_Opening;
 261                 event.type = libvlc_MediaPlayerOpening;
 262                 break;
 263             case PLAYING_S:
 264                 libvlc_state = libvlc_Playing;
 265                 event.type = libvlc_MediaPlayerPlaying;
 266                 break;
 267             case PAUSE_S:
 268                 libvlc_state = libvlc_Paused;
 269                 event.type = libvlc_MediaPlayerPaused;
 270                 break;
 271             case END_S:
 272                 libvlc_state = libvlc_Ended;
 273                 event.type = libvlc_MediaPlayerEndReached;
 274                 break;
 275             case ERROR_S:
 276                 libvlc_state = libvlc_Error;
 277                 event.type = libvlc_MediaPlayerEncounteredError;
 278                 break;
 279
 280             default:
 281                 return VLC_SUCCESS;
 282         }
 283
 284         set_state( p_mi, libvlc_state, false );
 285         libvlc_event_send( p_mi->p_event_manager, &event );
 286     }
 287     else if( newval.i_int == INPUT_EVENT_ABORT )
 288     {
 289         libvlc_state_t libvlc_state = libvlc_Stopped;
 290         event.type = libvlc_MediaPlayerStopped;
 291
 292         set_state( p_mi, libvlc_state, false );
 293         libvlc_event_send( p_mi->p_event_manager, &event );
 294     }
 295     else if( newval.i_int == INPUT_EVENT_POSITION )
 296     {
 297         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 298             return VLC_SUCCESS; /* Don't send the position while stopped */
 299
 300         /* */
 301         event.type = libvlc_MediaPlayerPositionChanged;
 302         event.u.media_player_position_changed.new_position =
 303                                           var_GetFloat( p_input, "position" );
 304         libvlc_event_send( p_mi->p_event_manager, &event );
 305
 306         /* */
 307         event.type = libvlc_MediaPlayerTimeChanged;
 308         event.u.media_player_time_changed.new_time =
 309            from_mtime(var_GetTime( p_input, "time" ));
 310         libvlc_event_send( p_mi->p_event_manager, &event );
 311     }
 312     else if( newval.i_int == INPUT_EVENT_LENGTH )
 313     {
 314         event.type = libvlc_MediaPlayerLengthChanged;
 315         event.u.media_player_length_changed.new_length =
 316            from_mtime(var_GetTime( p_input, "length" ));
 317         libvlc_event_send( p_mi->p_event_manager, &event );
 318     }
 319     else if( newval.i_int == INPUT_EVENT_CACHE )
 320     {
 321         event.type = libvlc_MediaPlayerBuffering;
 322         event.u.media_player_buffering.new_cache = (int)(100 *
 323             var_GetFloat( p_input, "cache" ));
 324         libvlc_event_send( p_mi->p_event_manager, &event );
 325     }
 326
 327     return VLC_SUCCESS;
 328 }
 329
 330 /**************************************************************************
 331  * Snapshot Taken Event.
 332  *
 333  * FIXME: This snapshot API interface makes no sense in media_player.
 334  *************************************************************************/
 335 static int snapshot_was_taken(vlc_object_t *p_this, char const *psz_cmd,
 336                               vlc_value_t oldval, vlc_value_t newval, void *p_data )
 337 {
 338     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
 339
 340     libvlc_media_player_t *mp = p_data;
 341     libvlc_event_t event;
 342     event.type = libvlc_MediaPlayerSnapshotTaken;
 343     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string;
 344     libvlc_event_send(mp->p_event_manager, &event);
 345
 346     return VLC_SUCCESS;
 347 }
 348
 349 static input_thread_t *find_input (vlc_object_t *obj)
 350 {
 351     libvlc_media_player_t *mp = (libvlc_media_player_t *)obj;
 352
 353     return libvlc_get_input_thread (mp);
 354 }
 355
 356 /* */
 357 static void libvlc_media_player_destroy( libvlc_media_player_t * );
 358
 359
 360 /**************************************************************************
 361  * Create a Media Instance object.
 362  *
 363  * Refcount strategy:
 364  * - All items created by _new start with a refcount set to 1.
 365  * - Accessor _release decrease the refcount by 1, if after that
 366  *   operation the refcount is 0, the object is destroyed.
 367  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 368  *
 369  * Object locking strategy:
 370  * - No lock held while in constructor.
 371  * - When accessing any member variable this lock is held. (XXX who locks?)
 372  * - When attempting to destroy the object the lock is also held.
 373  **************************************************************************/
 374 libvlc_media_player_t *
 375 libvlc_media_player_new( libvlc_instance_t *instance )
 376 {
 377     libvlc_media_player_t * mp;
 378
 379     assert(instance);
 380
 381     mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
 382     if (unlikely(mp == NULL))
 383     {
 384         libvlc_printerr("Not enough memory");
 385         return NULL;
 386     }
 387     vlc_object_attach (mp, mp->p_libvlc);
 388
 389     /* Input */
 390     var_Create (mp, "rate", VLC_VAR_FLOAT|VLC_VAR_DOINHERIT);
 391
 392     /* Video */
 393     var_Create (mp, "vout", VLC_VAR_STRING|VLC_VAR_DOINHERIT);
 394     var_Create (mp, "window", VLC_VAR_STRING);
 395     var_Create (mp, "vmem-lock", VLC_VAR_ADDRESS);
 396     var_Create (mp, "vmem-unlock", VLC_VAR_ADDRESS);
 397     var_Create (mp, "vmem-display", VLC_VAR_ADDRESS);
 398     var_Create (mp, "vmem-data", VLC_VAR_ADDRESS);
 399     var_Create (mp, "vmem-chroma", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 400     var_Create (mp, "vmem-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 401     var_Create (mp, "vmem-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 402     var_Create (mp, "vmem-pitch", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 403     var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
 404 #ifdef WIN32
 405     var_Create (mp, "drawable-hwnd", VLC_VAR_ADDRESS);
 406 #endif
 407 #ifdef __APPLE__
 408     var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
 409     var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
 410 #endif
 411
 412     var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
 413     var_SetBool (mp, "keyboard-events", true);
 414     var_Create (mp, "mouse-events", VLC_VAR_BOOL);
 415     var_SetBool (mp, "mouse-events", true);
 416
 417     var_Create (mp, "fullscreen", VLC_VAR_BOOL);
 418     var_Create (mp, "autoscale", VLC_VAR_BOOL);
 419     var_SetBool (mp, "autoscale", true);
 420     var_Create (mp, "scale", VLC_VAR_FLOAT);
 421     var_SetFloat (mp, "scale", 1.);
 422     var_Create (mp, "aspect-ratio", VLC_VAR_STRING);
 423     var_Create (mp, "crop", VLC_VAR_STRING);
 424     var_Create (mp, "deinterlace", VLC_VAR_INTEGER);
 425     var_Create (mp, "deinterlace-mode", VLC_VAR_STRING);
 426
 427     var_Create (mp, "vbi-page", VLC_VAR_INTEGER);
 428
 429     var_Create (mp, "marq-marquee", VLC_VAR_STRING);
 430     var_Create (mp, "marq-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 431     var_Create (mp, "marq-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 432     var_Create (mp, "marq-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 433     var_Create (mp, "marq-refresh", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 434     var_Create (mp, "marq-size", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 435     var_Create (mp, "marq-timeout", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 436     var_Create (mp, "marq-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 437     var_Create (mp, "marq-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 438
 439     var_Create (mp, "logo-file", VLC_VAR_STRING);
 440     var_Create (mp, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 441     var_Create (mp, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 442     var_Create (mp, "logo-delay", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 443     var_Create (mp, "logo-repeat", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 444     var_Create (mp, "logo-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 445     var_Create (mp, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 446
 447     var_Create (mp, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 448     var_Create (mp, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 449     var_Create (mp, "hue", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 450     var_Create (mp, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 451     var_Create (mp, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 452
 453      /* Audio */
 454     var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 455     var_Create (mp, "volume-muted", VLC_VAR_BOOL);
 456     var_Create (mp, "saved-volume", VLC_VAR_INTEGER);
 457     var_Create (mp, "volume-change", VLC_VAR_VOID);
 458     var_Create (mp, "find-input-callback", VLC_VAR_ADDRESS);
 459     var_SetAddress (mp, "find-input-callback", find_input);
 460
 461     mp->p_md = NULL;
 462     mp->state = libvlc_NothingSpecial;
 463     mp->p_libvlc_instance = instance;
 464     mp->input.p_thread = NULL;
 465     mp->input.p_resource = NULL;
 466     vlc_mutex_init (&mp->input.lock);
 467     mp->i_refcount = 1;
 468     mp->p_event_manager = libvlc_event_manager_new(mp, instance);
 469     if (unlikely(mp->p_event_manager == NULL))
 470     {
 471         vlc_object_release(mp);
 472         return NULL;
 473     }
 474     vlc_mutex_init(&mp->object_lock);
 475
 476     register_event(mp, NothingSpecial);
 477     register_event(mp, Opening);
 478     register_event(mp, Buffering);
 479     register_event(mp, Playing);
 480     register_event(mp, Paused);
 481     register_event(mp, Stopped);
 482     register_event(mp, Forward);
 483     register_event(mp, Backward);
 484     register_event(mp, EndReached);
 485     register_event(mp, EncounteredError);
 486     register_event(mp, SeekableChanged);
 487
 488     register_event(mp, PositionChanged);
 489     register_event(mp, TimeChanged);
 490     register_event(mp, LengthChanged);
 491     register_event(mp, TitleChanged);
 492     register_event(mp, PausableChanged);
 493
 494     /* Snapshot initialization */
 495     register_event(mp, SnapshotTaken);
 496
 497     register_event(mp, MediaChanged);
 498
 499     /* Attach a var callback to the global object to provide the glue between
 500      * vout_thread that generates the event and media_player that re-emits it
 501      * with its own event manager
 502      *
 503      * FIXME: It's unclear why we want to put this in public API, and why we
 504      * want to expose it in such a limiting and ugly way.
 505      */
 506     var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
 507
 508     libvlc_retain(instance);
 509     return mp;
 510 }
 511
 512 /**************************************************************************
 513  * Create a Media Instance object with a media descriptor.
 514  **************************************************************************/
 515 libvlc_media_player_t *
 516 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
 517 {
 518     libvlc_media_player_t * p_mi;
 519
 520     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
 521     if( !p_mi )
 522         return NULL;
 523
 524     libvlc_media_retain( p_md );
 525     p_mi->p_md = p_md;
 526
 527     return p_mi;
 528 }
 529
 530 /**************************************************************************
 531  * Destroy a Media Instance object (libvlc internal)
 532  *
 533  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 534  **************************************************************************/
 535 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 536 {
 537     assert( p_mi );
 538
 539     /* Detach Callback from the main libvlc object */
 540     var_DelCallback( p_mi->p_libvlc,
 541                      "snapshot-file", snapshot_was_taken, p_mi );
 542
 543     /* No need for lock_input() because no other threads knows us anymore */
 544     if( p_mi->input.p_thread )
 545         release_input_thread(p_mi, true);
 546     if( p_mi->input.p_resource )
 547     {
 548         input_resource_Terminate( p_mi->input.p_resource );
 549         input_resource_Release( p_mi->input.p_resource );
 550         p_mi->input.p_resource = NULL;
 551     }
 552     vlc_mutex_destroy( &p_mi->input.lock );
 553
 554     libvlc_event_manager_release( p_mi->p_event_manager );
 555     libvlc_media_release( p_mi->p_md );
 556     vlc_mutex_destroy( &p_mi->object_lock );
 557
 558     libvlc_instance_t *instance = p_mi->p_libvlc_instance;
 559     vlc_object_release( p_mi );
 560     libvlc_release(instance);
 561 }
 562
 563 /**************************************************************************
 564  * Release a Media Instance object.
 565  *
 566  * Function does the locking.
 567  **************************************************************************/
 568 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 569 {
 570     bool destroy;
 571
 572     assert( p_mi );
 573     lock(p_mi);
 574     destroy = !--p_mi->i_refcount;
 575     unlock(p_mi);
 576
 577     if( destroy )
 578         libvlc_media_player_destroy( p_mi );
 579 }
 580
 581 /**************************************************************************
 582  * Retain a Media Instance object.
 583  *
 584  * Caller must hold the lock.
 585  **************************************************************************/
 586 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 587 {
 588     assert( p_mi );
 589
 590     lock(p_mi);
 591     p_mi->i_refcount++;
 592     unlock(p_mi);
 593 }
 594
 595 /**************************************************************************
 596  * Set the Media descriptor associated with the instance.
 597  *
 598  * Enter without lock -- function will lock the object.
 599  **************************************************************************/
 600 void libvlc_media_player_set_media(
 601                             libvlc_media_player_t *p_mi,
 602                             libvlc_media_t *p_md )
 603 {
 604     lock_input(p_mi);
 605
 606     /* FIXME I am not sure if it is a user request or on die(eof/error)
 607      * request here */
 608     release_input_thread( p_mi,
 609                           p_mi->input.p_thread &&
 610                           !p_mi->input.p_thread->b_eof &&
 611                           !p_mi->input.p_thread->b_error );
 612
 613     lock( p_mi );
 614     set_state( p_mi, libvlc_NothingSpecial, true );
 615     unlock_input( p_mi );
 616
 617     libvlc_media_release( p_mi->p_md );
 618
 619     if( !p_md )
 620     {
 621         p_mi->p_md = NULL;
 622         unlock(p_mi);
 623         return; /* It is ok to pass a NULL md */
 624     }
 625
 626     libvlc_media_retain( p_md );
 627     p_mi->p_md = p_md;
 628
 629     /* The policy here is to ignore that we were created using a different
 630      * libvlc_instance, because we don't really care */
 631     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 632
 633     unlock(p_mi);
 634
 635     /* Send an event for the newly available media */
 636     libvlc_event_t event;
 637     event.type = libvlc_MediaPlayerMediaChanged;
 638     event.u.media_player_media_changed.new_media = p_md;
 639     libvlc_event_send( p_mi->p_event_manager, &event );
 640
 641 }
 642
 643 /**************************************************************************
 644  * Get the Media descriptor associated with the instance.
 645  **************************************************************************/
 646 libvlc_media_t *
 647 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
 648 {
 649     libvlc_media_t *p_m;
 650
 651     lock(p_mi);
 652     p_m = p_mi->p_md;
 653     if( p_m )
 654         libvlc_media_retain( p_mi->p_md );
 655     unlock(p_mi);
 656     return p_mi->p_md;
 657 }
 658
 659 /**************************************************************************
 660  * Get the event Manager.
 661  **************************************************************************/
 662 libvlc_event_manager_t *
 663 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
 664 {
 665     return p_mi->p_event_manager;
 666 }
 667
 668 /**************************************************************************
 669  * Tell media player to start playing.
 670  **************************************************************************/
 671 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
 672 {
 673     lock_input( p_mi );
 674
 675     input_thread_t *p_input_thread = p_mi->input.p_thread;
 676     if( p_input_thread )
 677     {
 678         /* A thread already exists, send it a play message */
 679         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 680         unlock_input( p_mi );
 681         return 0;
 682     }
 683
 684     /* Ignore previous exception */
 685     lock(p_mi);
 686
 687     if( !p_mi->p_md )
 688     {
 689         unlock(p_mi);
 690         unlock_input( p_mi );
 691         libvlc_printerr( "No associated media descriptor" );
 692         return -1;
 693     }
 694
 695     if( !p_mi->input.p_resource )
 696         p_mi->input.p_resource = input_resource_New( VLC_OBJECT( p_mi ) );
 697     p_input_thread = input_Create( p_mi, p_mi->p_md->p_input_item, NULL,
 698                                    p_mi->input.p_resource );
 699     unlock(p_mi);
 700     if( !p_input_thread )
 701     {
 702         unlock_input(p_mi);
 703         libvlc_printerr( "Not enough memory" );
 704         return -1;
 705     }
 706
 707     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 708     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 709     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 710
 711     if( input_Start( p_input_thread ) )
 712     {
 713         unlock_input(p_mi);
 714         var_DelCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 715         var_DelCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 716         var_DelCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 717         vlc_object_release( p_input_thread );
 718         libvlc_printerr( "Input initialization failure" );
 719         return -1;
 720     }
 721     p_mi->input.p_thread = p_input_thread;
 722     unlock_input(p_mi);
 723     return 0;
 724 }
 725
 726 void libvlc_media_player_set_pause( libvlc_media_player_t *p_mi, int paused )
 727 {
 728     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
 729     if( !p_input_thread )
 730         return;
 731
 732     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 733     if( state == libvlc_Playing || state == libvlc_Buffering )
 734     {
 735         if( paused )
 736         {
 737             if( libvlc_media_player_can_pause( p_mi ) )
 738                 input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 739             else
 740                 libvlc_media_player_stop( p_mi );
 741         }
 742     }
 743     else
 744     {
 745         if( !paused )
 746             input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 747     }
 748
 749     vlc_object_release( p_input_thread );
 750 }
 751
 752 /**************************************************************************
 753  * Toggle pause.
 754  **************************************************************************/
 755 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
 756 {
 757     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 758     bool playing = (state == libvlc_Playing || state == libvlc_Buffering);
 759
 760     libvlc_media_player_set_pause( p_mi, playing );
 761 }
 762
 763 /**************************************************************************
 764  * Tells whether the media player is currently playing.
 765  *
 766  * Enter with lock held.
 767  **************************************************************************/
 768 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
 769 {
 770     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 771     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 772 }
 773
 774 /**************************************************************************
 775  * Stop playing.
 776  **************************************************************************/
 777 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
 778 {
 779     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 780
 781     lock_input(p_mi);
 782     release_input_thread( p_mi, true ); /* This will stop the input thread */
 783
 784     /* Force to go to stopped state, in case we were in Ended, or Error
 785      * state. */
 786     if( state != libvlc_Stopped )
 787     {
 788         set_state( p_mi, libvlc_Stopped, false );
 789
 790         /* Construct and send the event */
 791         libvlc_event_t event;
 792         event.type = libvlc_MediaPlayerStopped;
 793         libvlc_event_send( p_mi->p_event_manager, &event );
 794     }
 795
 796     if( p_mi->input.p_resource != NULL )
 797         input_resource_TerminateVout( p_mi->input.p_resource );
 798     unlock_input(p_mi);
 799 }
 800
 801
 802 void libvlc_video_set_callbacks( libvlc_media_player_t *mp,
 803     void *(*lock_cb) (void *, void **),
 804     void (*unlock_cb) (void *, void *, void *const *),
 805     void (*display_cb) (void *, void *),
 806     void *opaque )
 807 {
 808     var_SetAddress( mp, "vmem-lock", lock_cb );
 809     var_SetAddress( mp, "vmem-unlock", unlock_cb );
 810     var_SetAddress( mp, "vmem-display", display_cb );
 811     var_SetAddress( mp, "vmem-data", opaque );
 812     var_SetString( mp, "vout", "vmem" );
 813 }
 814
 815 void libvlc_video_set_format( libvlc_media_player_t *mp, const char *chroma,
 816                               unsigned width, unsigned height, unsigned pitch )
 817 {
 818     var_SetString( mp, "vmem-chroma", chroma );
 819     var_SetInteger( mp, "vmem-width", width );
 820     var_SetInteger( mp, "vmem-height", height );
 821     var_SetInteger( mp, "vmem-pitch", pitch );
 822 }
 823
 824 /**************************************************************************
 825  * set_nsobject
 826  **************************************************************************/
 827 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 828                                         void * drawable )
 829 {
 830     assert (p_mi != NULL);
 831 #ifdef __APPLE__
 832     var_SetAddress (p_mi, "drawable-nsobject", drawable);
 833 #else
 834     (void) p_mi; (void)drawable;
 835 #endif
 836 }
 837
 838 /**************************************************************************
 839  * get_nsobject
 840  **************************************************************************/
 841 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 842 {
 843     assert (p_mi != NULL);
 844 #ifdef __APPLE__
 845     return var_GetAddress (p_mi, "drawable-nsobject");
 846 #else
 847     return NULL;
 848 #endif
 849 }
 850
 851 /**************************************************************************
 852  * set_agl
 853  **************************************************************************/
 854 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 855                                   uint32_t drawable )
 856 {
 857 #ifdef __APPLE__
 858     var_SetInteger (p_mi, "drawable-agl", drawable);
 859 #else
 860     (void) p_mi; (void)drawable;
 861 #endif
 862 }
 863
 864 /**************************************************************************
 865  * get_agl
 866  **************************************************************************/
 867 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 868 {
 869     assert (p_mi != NULL);
 870 #ifdef __APPLE__
 871     return var_GetInteger (p_mi, "drawable-agl");
 872 #else
 873     return 0;
 874 #endif
 875 }
 876
 877 /**************************************************************************
 878  * set_xwindow
 879  **************************************************************************/
 880 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 881                                       uint32_t drawable )
 882 {
 883     assert (p_mi != NULL);
 884
 885     var_SetString (p_mi, "vout", drawable ? "xid" : "any");
 886     var_SetString (p_mi, "window", drawable ? "embed-xid,any" : "any");
 887     var_SetInteger (p_mi, "drawable-xid", drawable);
 888 }
 889
 890 /**************************************************************************
 891  * get_xwindow
 892  **************************************************************************/
 893 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 894 {
 895     return var_GetInteger (p_mi, "drawable-xid");
 896 }
 897
 898 /**************************************************************************
 899  * set_hwnd
 900  **************************************************************************/
 901 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 902                                    void *drawable )
 903 {
 904     assert (p_mi != NULL);
 905 #ifdef WIN32
 906     var_SetString (p_mi, "window",
 907                    (drawable != NULL) ? "embed-hwnd,any" : "");
 908     var_SetAddress (p_mi, "drawable-hwnd", drawable);
 909 #else
 910     (void) p_mi; (void) drawable;
 911 #endif
 912 }
 913
 914 /**************************************************************************
 915  * get_hwnd
 916  **************************************************************************/
 917 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 918 {
 919     assert (p_mi != NULL);
 920 #ifdef WIN32
 921     return var_GetAddress (p_mi, "drawable-hwnd");
 922 #else
 923     return NULL;
 924 #endif
 925 }
 926
 927 /**************************************************************************
 928  * Getters for stream information
 929  **************************************************************************/
 930 libvlc_time_t libvlc_media_player_get_length(
 931                              libvlc_media_player_t *p_mi )
 932 {
 933     input_thread_t *p_input_thread;
 934     libvlc_time_t i_time;
 935
 936     p_input_thread = libvlc_get_input_thread ( p_mi );
 937     if( !p_input_thread )
 938         return -1;
 939
 940     i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
 941     vlc_object_release( p_input_thread );
 942
 943     return i_time;
 944 }
 945
 946 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
 947 {
 948     input_thread_t *p_input_thread;
 949     libvlc_time_t i_time;
 950
 951     p_input_thread = libvlc_get_input_thread ( p_mi );
 952     if( !p_input_thread )
 953         return -1;
 954
 955     i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
 956     vlc_object_release( p_input_thread );
 957     return i_time;
 958 }
 959
 960 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
 961                                    libvlc_time_t i_time )
 962 {
 963     input_thread_t *p_input_thread;
 964
 965     p_input_thread = libvlc_get_input_thread ( p_mi );
 966     if( !p_input_thread )
 967         return;
 968
 969     var_SetTime( p_input_thread, "time", to_mtime(i_time) );
 970     vlc_object_release( p_input_thread );
 971 }
 972
 973 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
 974                                        float position )
 975 {
 976     input_thread_t *p_input_thread;
 977
 978     p_input_thread = libvlc_get_input_thread ( p_mi );
 979     if( !p_input_thread )
 980         return;
 981
 982     var_SetFloat( p_input_thread, "position", position );
 983     vlc_object_release( p_input_thread );
 984 }
 985
 986 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
 987 {
 988     input_thread_t *p_input_thread;
 989     float f_position;
 990
 991     p_input_thread = libvlc_get_input_thread ( p_mi );
 992     if( !p_input_thread )
 993         return -1.0;
 994
 995     f_position = var_GetFloat( p_input_thread, "position" );
 996     vlc_object_release( p_input_thread );
 997
 998     return f_position;
 999 }
1000
1001 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
1002                                       int chapter )
1003 {
1004     input_thread_t *p_input_thread;
1005
1006     p_input_thread = libvlc_get_input_thread ( p_mi );
1007     if( !p_input_thread )
1008         return;
1009
1010     var_SetInteger( p_input_thread, "chapter", chapter );
1011     vlc_object_release( p_input_thread );
1012 }
1013
1014 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
1015 {
1016     input_thread_t *p_input_thread;
1017     int i_chapter;
1018
1019     p_input_thread = libvlc_get_input_thread ( p_mi );
1020     if( !p_input_thread )
1021         return -1;
1022
1023     i_chapter = var_GetInteger( p_input_thread, "chapter" );
1024     vlc_object_release( p_input_thread );
1025
1026     return i_chapter;
1027 }
1028
1029 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
1030 {
1031     input_thread_t *p_input_thread;
1032     vlc_value_t val;
1033
1034     p_input_thread = libvlc_get_input_thread ( p_mi );
1035     if( !p_input_thread )
1036         return -1;
1037
1038     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
1039     vlc_object_release( p_input_thread );
1040
1041     return val.i_int;
1042 }
1043
1044 int libvlc_media_player_get_chapter_count_for_title(
1045                                  libvlc_media_player_t *p_mi,
1046                                  int i_title )
1047 {
1048     input_thread_t *p_input_thread;
1049     vlc_value_t val;
1050
1051     p_input_thread = libvlc_get_input_thread ( p_mi );
1052     if( !p_input_thread )
1053         return -1;
1054
1055     char *psz_name;
1056     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
1057     {
1058         vlc_object_release( p_input_thread );
1059         return -1;
1060     }
1061     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
1062     vlc_object_release( p_input_thread );
1063     free( psz_name );
1064
1065     return val.i_int;
1066 }
1067
1068 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
1069                                     int i_title )
1070 {
1071     input_thread_t *p_input_thread;
1072
1073     p_input_thread = libvlc_get_input_thread ( p_mi );
1074     if( !p_input_thread )
1075         return;
1076
1077     var_SetInteger( p_input_thread, "title", i_title );
1078     vlc_object_release( p_input_thread );
1079
1080     //send event
1081     libvlc_event_t event;
1082     event.type = libvlc_MediaPlayerTitleChanged;
1083     event.u.media_player_title_changed.new_title = i_title;
1084     libvlc_event_send( p_mi->p_event_manager, &event );
1085 }
1086
1087 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
1088 {
1089     input_thread_t *p_input_thread;
1090     int i_title;
1091
1092     p_input_thread = libvlc_get_input_thread ( p_mi );
1093     if( !p_input_thread )
1094         return -1;
1095
1096     i_title = var_GetInteger( p_input_thread, "title" );
1097     vlc_object_release( p_input_thread );
1098
1099     return i_title;
1100 }
1101
1102 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
1103 {
1104     input_thread_t *p_input_thread;
1105     vlc_value_t val;
1106
1107     p_input_thread = libvlc_get_input_thread ( p_mi );
1108     if( !p_input_thread )
1109         return -1;
1110
1111     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1112     vlc_object_release( p_input_thread );
1113
1114     return val.i_int;
1115 }
1116
1117 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
1118 {
1119     input_thread_t *p_input_thread;
1120
1121     p_input_thread = libvlc_get_input_thread ( p_mi );
1122     if( !p_input_thread )
1123         return;
1124
1125     int i_type = var_Type( p_input_thread, "next-chapter" );
1126     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1127                             "next-chapter":"next-title", true );
1128
1129     vlc_object_release( p_input_thread );
1130 }
1131
1132 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
1133 {
1134     input_thread_t *p_input_thread;
1135
1136     p_input_thread = libvlc_get_input_thread ( p_mi );
1137     if( !p_input_thread )
1138         return;
1139
1140     int i_type = var_Type( p_input_thread, "next-chapter" );
1141     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1142                             "prev-chapter":"prev-title", true );
1143
1144     vlc_object_release( p_input_thread );
1145 }
1146
1147 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
1148 {
1149     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1150     double f_fps = 0.0;
1151
1152     if( p_input_thread )
1153     {
1154         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1155             f_fps = 0.0;
1156         vlc_object_release( p_input_thread );
1157     }
1158     return f_fps;
1159 }
1160
1161 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1162 {
1163     bool b_will_play;
1164     input_thread_t *p_input_thread =
1165                             libvlc_get_input_thread ( p_mi );
1166     if ( !p_input_thread )
1167         return false;
1168
1169     b_will_play = !p_input_thread->b_die && !p_input_thread->b_dead;
1170     vlc_object_release( p_input_thread );
1171
1172     return b_will_play;
1173 }
1174
1175 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1176 {
1177     if (rate < 0.)
1178     {
1179         libvlc_printerr ("Playing backward not supported");
1180         return -1;
1181     }
1182
1183     var_SetFloat (p_mi, "rate", rate);
1184
1185     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1186     if( !p_input_thread )
1187         return 0;
1188     var_SetFloat( p_input_thread, "rate", rate );
1189     vlc_object_release( p_input_thread );
1190     return 0;
1191 }
1192
1193 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1194 {
1195     return var_GetFloat (p_mi, "rate");
1196 }
1197
1198 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1199 {
1200     lock(p_mi);
1201     libvlc_state_t state = p_mi->state;
1202     unlock(p_mi);
1203     return state;
1204 }
1205
1206 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1207 {
1208     input_thread_t *p_input_thread;
1209     bool b_seekable;
1210
1211     p_input_thread = libvlc_get_input_thread ( p_mi );
1212     if ( !p_input_thread )
1213         return false;
1214     b_seekable = var_GetBool( p_input_thread, "can-seek" );
1215     vlc_object_release( p_input_thread );
1216
1217     return b_seekable;
1218 }
1219
1220 void libvlc_media_player_navigate( libvlc_media_player_t* p_mi,
1221                                    unsigned navigate )
1222 {
1223     input_thread_t *p_input_thread;
1224
1225     if ( navigate > libvlc_navigate_to_action_size)
1226       return;
1227
1228     p_input_thread = libvlc_get_input_thread ( p_mi );
1229     if ( !p_input_thread )
1230       return;
1231
1232     var_SetInteger( p_mi->p_libvlc_instance->p_libvlc_int,
1233                     "key-action", libvlc_navigate_to_action[navigate] );
1234
1235     vlc_object_release( p_input_thread );
1236 }
1237
1238 /* internal function, used by audio, video */
1239 libvlc_track_description_t *
1240         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1241                                       const char *psz_variable )
1242 {
1243     input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1244     libvlc_track_description_t *p_track_description = NULL,
1245                                *p_actual, *p_previous;
1246
1247     if( !p_input )
1248         return NULL;
1249
1250     vlc_value_t val_list, text_list;
1251     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1252
1253     /* no tracks */
1254     if( val_list.p_list->i_count <= 0 )
1255         goto end;
1256
1257     p_track_description = ( libvlc_track_description_t * )
1258         malloc( sizeof( libvlc_track_description_t ) );
1259     if ( !p_track_description )
1260     {
1261         libvlc_printerr( "Not enough memory" );
1262         goto end;
1263     }
1264     p_actual = p_track_description;
1265     p_previous = NULL;
1266     for( int i = 0; i < val_list.p_list->i_count; i++ )
1267     {
1268         if( !p_actual )
1269         {
1270             p_actual = ( libvlc_track_description_t * )
1271                 malloc( sizeof( libvlc_track_description_t ) );
1272             if ( !p_actual )
1273             {
1274                 libvlc_track_description_release( p_track_description );
1275                 libvlc_printerr( "Not enough memory" );
1276                 goto end;
1277             }
1278         }
1279         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1280         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1281         p_actual->p_next = NULL;
1282         if( p_previous )
1283             p_previous->p_next = p_actual;
1284         p_previous = p_actual;
1285         p_actual =  NULL;
1286     }
1287
1288 end:
1289     var_FreeList( &val_list, &text_list );
1290     vlc_object_release( p_input );
1291
1292     return p_track_description;
1293 }
1294
1295 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1296 {
1297     libvlc_track_description_t *p_actual, *p_before;
1298     p_actual = p_td;
1299
1300     while ( p_actual )
1301     {
1302         free( p_actual->psz_name );
1303         p_before = p_actual;
1304         p_actual = p_before->p_next;
1305         free( p_before );
1306     }
1307 }
1308
1309 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1310 {
1311     input_thread_t *p_input_thread;
1312     bool b_can_pause;
1313
1314     p_input_thread = libvlc_get_input_thread ( p_mi );
1315     if ( !p_input_thread )
1316         return false;
1317     b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1318     vlc_object_release( p_input_thread );
1319
1320     return b_can_pause;
1321 }
1322
1323 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1324 {
1325     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1326     if( p_input_thread != NULL )
1327     {
1328         var_TriggerCallback( p_input_thread, "frame-next" );
1329         vlc_object_release( p_input_thread );
1330     }
1331 }