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) 2005-2011 VLC authors and VideoLAN
   5  *
   6  * Authors: Clément Stenac <zorglub@videolan.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU Lesser General Public License as published by
  10  * the Free Software Foundation; either version 2.1 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public License
  19  * along with this program; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 #ifdef HAVE_CONFIG_H
  24 # include "config.h"
  25 #endif
  26
  27 #include <assert.h>
  28
  29 #include <vlc/libvlc.h>
  30 #include <vlc/libvlc_media.h>
  31 #include <vlc/libvlc_events.h>
  32
  33 #include <vlc_demux.h>
  34 #include <vlc_input.h>
  35 #include <vlc_vout.h>
  36 #include <vlc_aout.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 static int
  44 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
  45                         vlc_value_t oldval, vlc_value_t newval,
  46                         void * p_userdata );
  47 static int
  48 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
  49                         vlc_value_t oldval, vlc_value_t newval,
  50                         void * p_userdata );
  51 static int
  52 input_scrambled_changed( vlc_object_t * p_this, char const * psz_cmd,
  53                         vlc_value_t oldval, vlc_value_t newval,
  54                         void * p_userdata );
  55 static int
  56 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
  57                      vlc_value_t oldval, vlc_value_t newval,
  58                      void * p_userdata );
  59
  60 static int
  61 input_es_changed( vlc_object_t * p_this, char const * psz_cmd,
  62                   int action, vlc_value_t *p_val,
  63                   void *p_userdata);
  64
  65 static int
  66 input_es_selected( vlc_object_t * p_this, char const * psz_cmd,
  67                    vlc_value_t oldval, vlc_value_t newval,
  68                    void * p_userdata );
  69
  70 static void
  71 add_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi );
  72
  73 static void
  74 del_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi );
  75
  76 static int
  77 snapshot_was_taken( vlc_object_t *p_this, char const *psz_cmd,
  78                     vlc_value_t oldval, vlc_value_t newval, void *p_data );
  79
  80 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi );
  81
  82 /*
  83  * Shortcuts
  84  */
  85
  86 #define register_event(a, b) __register_event(a, libvlc_MediaPlayer ## b)
  87 static inline void __register_event(libvlc_media_player_t *mp, libvlc_event_type_t type)
  88 {
  89     libvlc_event_manager_register_event_type(mp->p_event_manager, type);
  90 }
  91
  92 /*
  93  * The input lock protects the input and input resource pointer.
  94  * It MUST NOT be used from callbacks.
  95  *
  96  * The object lock protects the reset, namely the media and the player state.
  97  * It can, and usually needs to be taken from callbacks.
  98  * The object lock can be acquired under the input lock... and consequently
  99  * the opposite order is STRICTLY PROHIBITED.
 100  */
 101 static inline void lock(libvlc_media_player_t *mp)
 102 {
 103     vlc_mutex_lock(&mp->object_lock);
 104 }
 105
 106 static inline void unlock(libvlc_media_player_t *mp)
 107 {
 108     vlc_mutex_unlock(&mp->object_lock);
 109 }
 110
 111 static inline void lock_input(libvlc_media_player_t *mp)
 112 {
 113     vlc_mutex_lock(&mp->input.lock);
 114 }
 115
 116 static inline void unlock_input(libvlc_media_player_t *mp)
 117 {
 118     vlc_mutex_unlock(&mp->input.lock);
 119 }
 120
 121 /*
 122  * Release the associated input thread.
 123  *
 124  * Object lock is NOT held.
 125  * Input lock is held or instance is being destroyed.
 126  */
 127 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
 128 {
 129     assert( p_mi );
 130
 131     input_thread_t *p_input_thread = p_mi->input.p_thread;
 132     if( !p_input_thread )
 133         return;
 134     p_mi->input.p_thread = NULL;
 135
 136     var_DelCallback( p_input_thread, "can-seek",
 137                      input_seekable_changed, p_mi );
 138     var_DelCallback( p_input_thread, "can-pause",
 139                     input_pausable_changed, p_mi );
 140     var_DelCallback( p_input_thread, "program-scrambled",
 141                     input_scrambled_changed, p_mi );
 142     var_DelCallback( p_input_thread, "intf-event",
 143                      input_event_changed, p_mi );
 144     del_es_callbacks( p_input_thread, p_mi );
 145
 146     /* We owned this one */
 147     input_Stop( p_input_thread, b_input_abort );
 148     input_Close( 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_scrambled_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     VLC_UNUSED(p_this);
 244     VLC_UNUSED(psz_cmd);
 245     libvlc_media_player_t * p_mi = p_userdata;
 246     libvlc_event_t event;
 247
 248     event.type = libvlc_MediaPlayerScrambledChanged;
 249     event.u.media_player_scrambled_changed.new_scrambled = newval.b_bool;
 250
 251     libvlc_event_send( p_mi->p_event_manager, &event );
 252     return VLC_SUCCESS;
 253 }
 254
 255 static int
 256 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 257                      vlc_value_t oldval, vlc_value_t newval,
 258                      void * p_userdata )
 259 {
 260     VLC_UNUSED(oldval);
 261     input_thread_t * p_input = (input_thread_t *)p_this;
 262     libvlc_media_player_t * p_mi = p_userdata;
 263     libvlc_event_t event;
 264
 265     assert( !strcmp( psz_cmd, "intf-event" ) );
 266
 267     if( newval.i_int == INPUT_EVENT_STATE )
 268     {
 269         libvlc_state_t libvlc_state;
 270
 271         switch ( var_GetInteger( p_input, "state" ) )
 272         {
 273             case INIT_S:
 274                 libvlc_state = libvlc_NothingSpecial;
 275                 event.type = libvlc_MediaPlayerNothingSpecial;
 276                 break;
 277             case OPENING_S:
 278                 libvlc_state = libvlc_Opening;
 279                 event.type = libvlc_MediaPlayerOpening;
 280                 break;
 281             case PLAYING_S:
 282                 libvlc_state = libvlc_Playing;
 283                 event.type = libvlc_MediaPlayerPlaying;
 284                 break;
 285             case PAUSE_S:
 286                 libvlc_state = libvlc_Paused;
 287                 event.type = libvlc_MediaPlayerPaused;
 288                 break;
 289             case END_S:
 290                 libvlc_state = libvlc_Ended;
 291                 event.type = libvlc_MediaPlayerEndReached;
 292                 break;
 293             case ERROR_S:
 294                 libvlc_state = libvlc_Error;
 295                 event.type = libvlc_MediaPlayerEncounteredError;
 296                 break;
 297
 298             default:
 299                 return VLC_SUCCESS;
 300         }
 301
 302         set_state( p_mi, libvlc_state, false );
 303         libvlc_event_send( p_mi->p_event_manager, &event );
 304     }
 305     else if( newval.i_int == INPUT_EVENT_ABORT )
 306     {
 307         libvlc_state_t libvlc_state = libvlc_Stopped;
 308         event.type = libvlc_MediaPlayerStopped;
 309
 310         set_state( p_mi, libvlc_state, false );
 311         libvlc_event_send( p_mi->p_event_manager, &event );
 312     }
 313     else if( newval.i_int == INPUT_EVENT_POSITION )
 314     {
 315         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 316             return VLC_SUCCESS; /* Don't send the position while stopped */
 317
 318         /* */
 319         event.type = libvlc_MediaPlayerPositionChanged;
 320         event.u.media_player_position_changed.new_position =
 321                                           var_GetFloat( p_input, "position" );
 322         libvlc_event_send( p_mi->p_event_manager, &event );
 323
 324         /* */
 325         event.type = libvlc_MediaPlayerTimeChanged;
 326         event.u.media_player_time_changed.new_time =
 327            from_mtime(var_GetTime( p_input, "time" ));
 328         libvlc_event_send( p_mi->p_event_manager, &event );
 329     }
 330     else if( newval.i_int == INPUT_EVENT_LENGTH )
 331     {
 332         event.type = libvlc_MediaPlayerLengthChanged;
 333         event.u.media_player_length_changed.new_length =
 334            from_mtime(var_GetTime( p_input, "length" ));
 335         libvlc_event_send( p_mi->p_event_manager, &event );
 336     }
 337     else if( newval.i_int == INPUT_EVENT_CACHE )
 338     {
 339         event.type = libvlc_MediaPlayerBuffering;
 340         event.u.media_player_buffering.new_cache = (int)(100 *
 341             var_GetFloat( p_input, "cache" ));
 342         libvlc_event_send( p_mi->p_event_manager, &event );
 343     }
 344     else if( newval.i_int == INPUT_EVENT_VOUT )
 345     {
 346         vout_thread_t **pp_vout;
 347         size_t i_vout;
 348         if( input_Control( p_input, INPUT_GET_VOUTS, &pp_vout, &i_vout ) )
 349         {
 350             i_vout  = 0;
 351         }
 352         else
 353         {
 354             for( size_t i = 0; i < i_vout; i++ )
 355                 vlc_object_release( pp_vout[i] );
 356             free( pp_vout );
 357         }
 358
 359         event.type = libvlc_MediaPlayerVout;
 360         event.u.media_player_vout.new_count = i_vout;
 361         libvlc_event_send( p_mi->p_event_manager, &event );
 362     }
 363
 364     return VLC_SUCCESS;
 365 }
 366
 367 static int track_type_from_name(const char *psz_name)
 368 {
 369    if( !strcmp( psz_name, "video-es" ) )
 370        return libvlc_track_video;
 371     else if( !strcmp( psz_name, "audio-es" ) )
 372         return libvlc_track_audio;
 373     else if( !strcmp( psz_name, "spu-es" ) )
 374         return libvlc_track_text;
 375     else
 376         return libvlc_track_unknown;
 377 }
 378
 379 static int input_es_changed( vlc_object_t *p_this,
 380                              char const *psz_cmd,
 381                              int action,
 382                              vlc_value_t *p_val,
 383                              void *p_userdata )
 384 {
 385     VLC_UNUSED(p_this);
 386     libvlc_media_player_t *mp = p_userdata;
 387     libvlc_event_t event;
 388
 389     /* Ignore the "Disable" element */
 390     if (p_val && p_val->i_int < 0)
 391         return VLC_EGENERIC;
 392
 393     switch (action)
 394     {
 395     case VLC_VAR_ADDCHOICE:
 396         event.type = libvlc_MediaPlayerESAdded;
 397         break;
 398     case VLC_VAR_DELCHOICE:
 399     case VLC_VAR_CLEARCHOICES:
 400         event.type = libvlc_MediaPlayerESDeleted;
 401         break;
 402     default:
 403         return VLC_EGENERIC;
 404     }
 405
 406     event.u.media_player_es_changed.i_type = track_type_from_name(psz_cmd);
 407
 408     int i_id;
 409     if (action != VLC_VAR_CLEARCHOICES)
 410     {
 411         if (!p_val)
 412             return VLC_EGENERIC;
 413         i_id = p_val->i_int;
 414     }
 415     else
 416     {
 417         /* -1 means all ES tracks of this type were deleted. */
 418         i_id = -1;
 419     }
 420     event.u.media_player_es_changed.i_id = i_id;
 421
 422     libvlc_event_send(mp->p_event_manager, &event);
 423
 424     return VLC_SUCCESS;
 425 }
 426
 427 static int
 428 input_es_selected( vlc_object_t * p_this, char const * psz_cmd,
 429                    vlc_value_t oldval, vlc_value_t newval,
 430                    void * p_userdata )
 431 {
 432     VLC_UNUSED(p_this);
 433     VLC_UNUSED(oldval);
 434     libvlc_media_player_t *mp = p_userdata;
 435     libvlc_event_t event;
 436
 437     event.type = libvlc_MediaPlayerESSelected;
 438     event.u.media_player_es_changed.i_type = track_type_from_name(psz_cmd);
 439     event.u.media_player_es_changed.i_id = newval.i_int;
 440
 441     libvlc_event_send(mp->p_event_manager, &event);
 442
 443     return VLC_SUCCESS;
 444 }
 445
 446 /**************************************************************************
 447  * Snapshot Taken Event.
 448  *
 449  * FIXME: This snapshot API interface makes no sense in media_player.
 450  *************************************************************************/
 451 static int snapshot_was_taken(vlc_object_t *p_this, char const *psz_cmd,
 452                               vlc_value_t oldval, vlc_value_t newval, void *p_data )
 453 {
 454     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
 455
 456     libvlc_media_player_t *mp = p_data;
 457     libvlc_event_t event;
 458     event.type = libvlc_MediaPlayerSnapshotTaken;
 459     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string;
 460     libvlc_event_send(mp->p_event_manager, &event);
 461
 462     return VLC_SUCCESS;
 463 }
 464
 465 /**************************************************************************
 466  * Create a Media Instance object.
 467  *
 468  * Refcount strategy:
 469  * - All items created by _new start with a refcount set to 1.
 470  * - Accessor _release decrease the refcount by 1, if after that
 471  *   operation the refcount is 0, the object is destroyed.
 472  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 473  *
 474  * Object locking strategy:
 475  * - No lock held while in constructor.
 476  * - When accessing any member variable this lock is held. (XXX who locks?)
 477  * - When attempting to destroy the object the lock is also held.
 478  **************************************************************************/
 479 libvlc_media_player_t *
 480 libvlc_media_player_new( libvlc_instance_t *instance )
 481 {
 482     libvlc_media_player_t * mp;
 483
 484     assert(instance);
 485
 486     mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
 487     if (unlikely(mp == NULL))
 488     {
 489         libvlc_printerr("Not enough memory");
 490         return NULL;
 491     }
 492
 493     /* Input */
 494     var_Create (mp, "rate", VLC_VAR_FLOAT|VLC_VAR_DOINHERIT);
 495
 496     /* Video */
 497     var_Create (mp, "vout", VLC_VAR_STRING|VLC_VAR_DOINHERIT);
 498     var_Create (mp, "window", VLC_VAR_STRING);
 499     var_Create (mp, "vmem-lock", VLC_VAR_ADDRESS);
 500     var_Create (mp, "vmem-unlock", VLC_VAR_ADDRESS);
 501     var_Create (mp, "vmem-display", VLC_VAR_ADDRESS);
 502     var_Create (mp, "vmem-data", VLC_VAR_ADDRESS);
 503     var_Create (mp, "vmem-setup", VLC_VAR_ADDRESS);
 504     var_Create (mp, "vmem-cleanup", VLC_VAR_ADDRESS);
 505     var_Create (mp, "vmem-chroma", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 506     var_Create (mp, "vmem-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 507     var_Create (mp, "vmem-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 508     var_Create (mp, "vmem-pitch", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 509     var_Create (mp, "avcodec-hw", VLC_VAR_STRING);
 510     var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
 511 #if defined (_WIN32) || defined (__OS2__)
 512     var_Create (mp, "drawable-hwnd", VLC_VAR_INTEGER);
 513 #endif
 514 #ifdef __APPLE__
 515     var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
 516     var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
 517 #endif
 518
 519     var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
 520     var_SetBool (mp, "keyboard-events", true);
 521     var_Create (mp, "mouse-events", VLC_VAR_BOOL);
 522     var_SetBool (mp, "mouse-events", true);
 523
 524     var_Create (mp, "fullscreen", VLC_VAR_BOOL);
 525     var_Create (mp, "autoscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT);
 526     var_Create (mp, "zoom", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 527     var_Create (mp, "aspect-ratio", VLC_VAR_STRING);
 528     var_Create (mp, "crop", VLC_VAR_STRING);
 529     var_Create (mp, "deinterlace", VLC_VAR_INTEGER);
 530     var_Create (mp, "deinterlace-mode", VLC_VAR_STRING);
 531
 532     var_Create (mp, "vbi-page", VLC_VAR_INTEGER);
 533
 534     var_Create (mp, "marq-marquee", VLC_VAR_STRING);
 535     var_Create (mp, "marq-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 536     var_Create (mp, "marq-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 537     var_Create (mp, "marq-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 538     var_Create (mp, "marq-refresh", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 539     var_Create (mp, "marq-size", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 540     var_Create (mp, "marq-timeout", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 541     var_Create (mp, "marq-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 542     var_Create (mp, "marq-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 543
 544     var_Create (mp, "logo-file", VLC_VAR_STRING);
 545     var_Create (mp, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 546     var_Create (mp, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 547     var_Create (mp, "logo-delay", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 548     var_Create (mp, "logo-repeat", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 549     var_Create (mp, "logo-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 550     var_Create (mp, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 551
 552     var_Create (mp, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 553     var_Create (mp, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 554     var_Create (mp, "hue", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 555     var_Create (mp, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 556     var_Create (mp, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 557
 558      /* Audio */
 559     var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 560     var_Create (mp, "mute", VLC_VAR_BOOL);
 561     var_Create (mp, "volume", VLC_VAR_FLOAT);
 562     var_Create (mp, "corks", VLC_VAR_INTEGER);
 563     var_Create (mp, "audio-filter", VLC_VAR_STRING);
 564     var_Create (mp, "amem-data", VLC_VAR_ADDRESS);
 565     var_Create (mp, "amem-setup", VLC_VAR_ADDRESS);
 566     var_Create (mp, "amem-cleanup", VLC_VAR_ADDRESS);
 567     var_Create (mp, "amem-play", VLC_VAR_ADDRESS);
 568     var_Create (mp, "amem-pause", VLC_VAR_ADDRESS);
 569     var_Create (mp, "amem-resume", VLC_VAR_ADDRESS);
 570     var_Create (mp, "amem-flush", VLC_VAR_ADDRESS);
 571     var_Create (mp, "amem-drain", VLC_VAR_ADDRESS);
 572     var_Create (mp, "amem-set-volume", VLC_VAR_ADDRESS);
 573     var_Create (mp, "amem-format", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 574     var_Create (mp, "amem-rate", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 575     var_Create (mp, "amem-channels", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 576
 577     /* Video Title */
 578     var_Create (mp, "video-title-show", VLC_VAR_BOOL);
 579     var_Create (mp, "video-title-position", VLC_VAR_INTEGER);
 580     var_Create (mp, "video-title-timeout", VLC_VAR_INTEGER);
 581
 582     /* Equalizer */
 583     var_Create (mp, "equalizer-preamp", VLC_VAR_FLOAT);
 584     var_Create (mp, "equalizer-vlcfreqs", VLC_VAR_BOOL);
 585     var_Create (mp, "equalizer-bands", VLC_VAR_STRING);
 586
 587     mp->p_md = NULL;
 588     mp->state = libvlc_NothingSpecial;
 589     mp->p_libvlc_instance = instance;
 590     mp->input.p_thread = NULL;
 591     mp->input.p_resource = input_resource_New(VLC_OBJECT(mp));
 592     if (unlikely(mp->input.p_resource == NULL))
 593     {
 594         vlc_object_release(mp);
 595         return NULL;
 596     }
 597     audio_output_t *aout = input_resource_GetAout(mp->input.p_resource);
 598     if( aout != NULL )
 599         input_resource_PutAout(mp->input.p_resource, aout);
 600
 601     vlc_mutex_init (&mp->input.lock);
 602     mp->i_refcount = 1;
 603     mp->p_event_manager = libvlc_event_manager_new(mp, instance);
 604     if (unlikely(mp->p_event_manager == NULL))
 605     {
 606         input_resource_Release(mp->input.p_resource);
 607         vlc_object_release(mp);
 608         return NULL;
 609     }
 610     vlc_mutex_init(&mp->object_lock);
 611
 612     register_event(mp, NothingSpecial);
 613     register_event(mp, Opening);
 614     register_event(mp, Buffering);
 615     register_event(mp, Playing);
 616     register_event(mp, Paused);
 617     register_event(mp, Stopped);
 618     register_event(mp, Forward);
 619     register_event(mp, Backward);
 620     register_event(mp, EndReached);
 621     register_event(mp, EncounteredError);
 622     register_event(mp, SeekableChanged);
 623
 624     register_event(mp, PositionChanged);
 625     register_event(mp, TimeChanged);
 626     register_event(mp, LengthChanged);
 627     register_event(mp, TitleChanged);
 628     register_event(mp, PausableChanged);
 629
 630     register_event(mp, Vout);
 631     register_event(mp, ScrambledChanged);
 632     register_event(mp, ESAdded);
 633     register_event(mp, ESDeleted);
 634     register_event(mp, ESSelected);
 635
 636     /* Snapshot initialization */
 637     register_event(mp, SnapshotTaken);
 638
 639     register_event(mp, MediaChanged);
 640
 641     /* Attach a var callback to the global object to provide the glue between
 642      * vout_thread that generates the event and media_player that re-emits it
 643      * with its own event manager
 644      *
 645      * FIXME: It's unclear why we want to put this in public API, and why we
 646      * want to expose it in such a limiting and ugly way.
 647      */
 648     var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
 649
 650     libvlc_retain(instance);
 651     return mp;
 652 }
 653
 654 /**************************************************************************
 655  * Create a Media Instance object with a media descriptor.
 656  **************************************************************************/
 657 libvlc_media_player_t *
 658 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
 659 {
 660     libvlc_media_player_t * p_mi;
 661
 662     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
 663     if( !p_mi )
 664         return NULL;
 665
 666     libvlc_media_retain( p_md );
 667     p_mi->p_md = p_md;
 668
 669     return p_mi;
 670 }
 671
 672 /**************************************************************************
 673  * Destroy a Media Instance object (libvlc internal)
 674  *
 675  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 676  **************************************************************************/
 677 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 678 {
 679     assert( p_mi );
 680
 681     /* Detach Callback from the main libvlc object */
 682     var_DelCallback( p_mi->p_libvlc,
 683                      "snapshot-file", snapshot_was_taken, p_mi );
 684
 685     /* No need for lock_input() because no other threads knows us anymore */
 686     if( p_mi->input.p_thread )
 687         release_input_thread(p_mi, true);
 688     input_resource_Terminate( p_mi->input.p_resource );
 689     input_resource_Release( p_mi->input.p_resource );
 690     vlc_mutex_destroy( &p_mi->input.lock );
 691
 692     libvlc_event_manager_release( p_mi->p_event_manager );
 693     libvlc_media_release( p_mi->p_md );
 694     vlc_mutex_destroy( &p_mi->object_lock );
 695
 696     libvlc_instance_t *instance = p_mi->p_libvlc_instance;
 697     vlc_object_release( p_mi );
 698     libvlc_release(instance);
 699 }
 700
 701 /**************************************************************************
 702  * Release a Media Instance object.
 703  *
 704  * Function does the locking.
 705  **************************************************************************/
 706 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 707 {
 708     bool destroy;
 709
 710     assert( p_mi );
 711     lock(p_mi);
 712     destroy = !--p_mi->i_refcount;
 713     unlock(p_mi);
 714
 715     if( destroy )
 716         libvlc_media_player_destroy( p_mi );
 717 }
 718
 719 /**************************************************************************
 720  * Retain a Media Instance object.
 721  *
 722  * Caller must hold the lock.
 723  **************************************************************************/
 724 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 725 {
 726     assert( p_mi );
 727
 728     lock(p_mi);
 729     p_mi->i_refcount++;
 730     unlock(p_mi);
 731 }
 732
 733 /**************************************************************************
 734  * Set the Media descriptor associated with the instance.
 735  *
 736  * Enter without lock -- function will lock the object.
 737  **************************************************************************/
 738 void libvlc_media_player_set_media(
 739                             libvlc_media_player_t *p_mi,
 740                             libvlc_media_t *p_md )
 741 {
 742     lock_input(p_mi);
 743
 744     /* FIXME I am not sure if it is a user request or on die(eof/error)
 745      * request here */
 746     release_input_thread( p_mi,
 747                           p_mi->input.p_thread &&
 748                           !p_mi->input.p_thread->b_eof &&
 749                           !p_mi->input.p_thread->b_error );
 750
 751     lock( p_mi );
 752     set_state( p_mi, libvlc_NothingSpecial, true );
 753     unlock_input( p_mi );
 754
 755     libvlc_media_release( p_mi->p_md );
 756
 757     if( !p_md )
 758     {
 759         p_mi->p_md = NULL;
 760         unlock(p_mi);
 761         return; /* It is ok to pass a NULL md */
 762     }
 763
 764     libvlc_media_retain( p_md );
 765     p_mi->p_md = p_md;
 766
 767     /* The policy here is to ignore that we were created using a different
 768      * libvlc_instance, because we don't really care */
 769     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 770
 771     unlock(p_mi);
 772
 773     /* Send an event for the newly available media */
 774     libvlc_event_t event;
 775     event.type = libvlc_MediaPlayerMediaChanged;
 776     event.u.media_player_media_changed.new_media = p_md;
 777     libvlc_event_send( p_mi->p_event_manager, &event );
 778
 779 }
 780
 781 /**************************************************************************
 782  * Get the Media descriptor associated with the instance.
 783  **************************************************************************/
 784 libvlc_media_t *
 785 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
 786 {
 787     libvlc_media_t *p_m;
 788
 789     lock( p_mi );
 790     p_m = p_mi->p_md;
 791     if( p_m )
 792         libvlc_media_retain( p_m );
 793     unlock( p_mi );
 794
 795     return p_m;
 796 }
 797
 798 /**************************************************************************
 799  * Get the event Manager.
 800  **************************************************************************/
 801 libvlc_event_manager_t *
 802 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
 803 {
 804     return p_mi->p_event_manager;
 805 }
 806
 807 static void add_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi )
 808 {
 809     var_AddListCallback( p_input_thread, "video-es", input_es_changed, p_mi );
 810     var_AddListCallback( p_input_thread, "audio-es", input_es_changed, p_mi );
 811     var_AddListCallback( p_input_thread, "spu-es", input_es_changed, p_mi );
 812     var_AddCallback( p_input_thread, "video-es", input_es_selected, p_mi );
 813     var_AddCallback( p_input_thread, "audio-es", input_es_selected, p_mi );
 814     var_AddCallback( p_input_thread, "spu-es", input_es_selected, p_mi );
 815 }
 816
 817 static void del_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi )
 818 {
 819     var_DelListCallback( p_input_thread, "video-es", input_es_changed, p_mi );
 820     var_DelListCallback( p_input_thread, "audio-es", input_es_changed, p_mi );
 821     var_DelListCallback( p_input_thread, "spu-es", input_es_changed, p_mi );
 822     var_DelCallback( p_input_thread, "video-es", input_es_selected, p_mi );
 823     var_DelCallback( p_input_thread, "audio-es", input_es_selected, p_mi );
 824     var_DelCallback( p_input_thread, "spu-es", input_es_selected, p_mi );
 825 }
 826
 827 /**************************************************************************
 828  * Tell media player to start playing.
 829  **************************************************************************/
 830 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
 831 {
 832     lock_input( p_mi );
 833
 834     input_thread_t *p_input_thread = p_mi->input.p_thread;
 835     if( p_input_thread )
 836     {
 837         /* A thread already exists, send it a play message */
 838         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 839         unlock_input( p_mi );
 840         return 0;
 841     }
 842
 843     /* Ignore previous exception */
 844     lock(p_mi);
 845
 846     if( !p_mi->p_md )
 847     {
 848         unlock(p_mi);
 849         unlock_input( p_mi );
 850         libvlc_printerr( "No associated media descriptor" );
 851         return -1;
 852     }
 853
 854     p_input_thread = input_Create( p_mi, p_mi->p_md->p_input_item, NULL,
 855                                    p_mi->input.p_resource );
 856     unlock(p_mi);
 857     if( !p_input_thread )
 858     {
 859         unlock_input(p_mi);
 860         libvlc_printerr( "Not enough memory" );
 861         return -1;
 862     }
 863
 864     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 865     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 866     var_AddCallback( p_input_thread, "program-scrambled", input_scrambled_changed, p_mi );
 867     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 868     add_es_callbacks( p_input_thread, p_mi );
 869
 870     if( input_Start( p_input_thread ) )
 871     {
 872         unlock_input(p_mi);
 873         del_es_callbacks( p_input_thread, p_mi );
 874         var_DelCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 875         var_DelCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 876         var_DelCallback( p_input_thread, "program-scrambled", input_scrambled_changed, p_mi );
 877         var_DelCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 878         vlc_object_release( p_input_thread );
 879         libvlc_printerr( "Input initialization failure" );
 880         return -1;
 881     }
 882     p_mi->input.p_thread = p_input_thread;
 883     unlock_input(p_mi);
 884     return 0;
 885 }
 886
 887 void libvlc_media_player_set_pause( libvlc_media_player_t *p_mi, int paused )
 888 {
 889     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
 890     if( !p_input_thread )
 891         return;
 892
 893     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 894     if( state == libvlc_Playing || state == libvlc_Buffering )
 895     {
 896         if( paused )
 897         {
 898             if( libvlc_media_player_can_pause( p_mi ) )
 899                 input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 900             else
 901                 input_Stop( p_input_thread, true );
 902         }
 903     }
 904     else
 905     {
 906         if( !paused )
 907             input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 908     }
 909
 910     vlc_object_release( p_input_thread );
 911 }
 912
 913 /**************************************************************************
 914  * Toggle pause.
 915  **************************************************************************/
 916 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
 917 {
 918     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 919     bool playing = (state == libvlc_Playing || state == libvlc_Buffering);
 920
 921     libvlc_media_player_set_pause( p_mi, playing );
 922 }
 923
 924 /**************************************************************************
 925  * Tells whether the media player is currently playing.
 926  *
 927  * Enter with lock held.
 928  **************************************************************************/
 929 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
 930 {
 931     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 932     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 933 }
 934
 935 /**************************************************************************
 936  * Stop playing.
 937  **************************************************************************/
 938 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
 939 {
 940     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 941
 942     lock_input(p_mi);
 943     release_input_thread( p_mi, true ); /* This will stop the input thread */
 944
 945     /* Force to go to stopped state, in case we were in Ended, or Error
 946      * state. */
 947     if( state != libvlc_Stopped )
 948     {
 949         set_state( p_mi, libvlc_Stopped, false );
 950
 951         /* Construct and send the event */
 952         libvlc_event_t event;
 953         event.type = libvlc_MediaPlayerStopped;
 954         libvlc_event_send( p_mi->p_event_manager, &event );
 955     }
 956
 957     input_resource_Terminate( p_mi->input.p_resource );
 958     unlock_input(p_mi);
 959 }
 960
 961
 962 void libvlc_video_set_callbacks( libvlc_media_player_t *mp,
 963     void *(*lock_cb) (void *, void **),
 964     void (*unlock_cb) (void *, void *, void *const *),
 965     void (*display_cb) (void *, void *),
 966     void *opaque )
 967 {
 968     var_SetAddress( mp, "vmem-lock", lock_cb );
 969     var_SetAddress( mp, "vmem-unlock", unlock_cb );
 970     var_SetAddress( mp, "vmem-display", display_cb );
 971     var_SetAddress( mp, "vmem-data", opaque );
 972     var_SetString( mp, "vout", "vmem" );
 973     var_SetString( mp, "avcodec-hw", "none" );
 974 }
 975
 976 void libvlc_video_set_format_callbacks( libvlc_media_player_t *mp,
 977                                         libvlc_video_format_cb setup,
 978                                         libvlc_video_cleanup_cb cleanup )
 979 {
 980     var_SetAddress( mp, "vmem-setup", setup );
 981     var_SetAddress( mp, "vmem-cleanup", cleanup );
 982 }
 983
 984 void libvlc_video_set_format( libvlc_media_player_t *mp, const char *chroma,
 985                               unsigned width, unsigned height, unsigned pitch )
 986 {
 987     var_SetString( mp, "vmem-chroma", chroma );
 988     var_SetInteger( mp, "vmem-width", width );
 989     var_SetInteger( mp, "vmem-height", height );
 990     var_SetInteger( mp, "vmem-pitch", pitch );
 991 }
 992
 993 /**************************************************************************
 994  * set_nsobject
 995  **************************************************************************/
 996 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 997                                         void * drawable )
 998 {
 999     assert (p_mi != NULL);
1000 #ifdef __APPLE__
1001     var_SetAddress (p_mi, "drawable-nsobject", drawable);
1002 #else
1003     (void) p_mi; (void)drawable;
1004 #endif
1005 }
1006
1007 /**************************************************************************
1008  * get_nsobject
1009  **************************************************************************/
1010 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
1011 {
1012     assert (p_mi != NULL);
1013 #ifdef __APPLE__
1014     return var_GetAddress (p_mi, "drawable-nsobject");
1015 #else
1016     return NULL;
1017 #endif
1018 }
1019
1020 /**************************************************************************
1021  * set_agl
1022  **************************************************************************/
1023 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
1024                                   uint32_t drawable )
1025 {
1026 #ifdef __APPLE__
1027     var_SetInteger (p_mi, "drawable-agl", drawable);
1028 #else
1029     (void) p_mi; (void)drawable;
1030 #endif
1031 }
1032
1033 /**************************************************************************
1034  * get_agl
1035  **************************************************************************/
1036 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
1037 {
1038     assert (p_mi != NULL);
1039 #ifdef __APPLE__
1040     return var_GetInteger (p_mi, "drawable-agl");
1041 #else
1042     return 0;
1043 #endif
1044 }
1045
1046 /**************************************************************************
1047  * set_xwindow
1048  **************************************************************************/
1049 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
1050                                       uint32_t drawable )
1051 {
1052     assert (p_mi != NULL);
1053
1054     var_SetString (p_mi, "avcodec-hw", "");
1055     var_SetString (p_mi, "vout", drawable ? "xid" : "any");
1056     var_SetString (p_mi, "window", drawable ? "embed-xid,any" : "any");
1057     var_SetInteger (p_mi, "drawable-xid", drawable);
1058 }
1059
1060 /**************************************************************************
1061  * get_xwindow
1062  **************************************************************************/
1063 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
1064 {
1065     return var_GetInteger (p_mi, "drawable-xid");
1066 }
1067
1068 /**************************************************************************
1069  * set_hwnd
1070  **************************************************************************/
1071 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
1072                                    void *drawable )
1073 {
1074     assert (p_mi != NULL);
1075 #if defined (_WIN32) || defined (__OS2__)
1076     var_SetString (p_mi, "window",
1077                    (drawable != NULL) ? "embed-hwnd,any" : "");
1078     var_SetInteger (p_mi, "drawable-hwnd", (uintptr_t)drawable);
1079 #else
1080     (void) p_mi; (void) drawable;
1081 #endif
1082 }
1083
1084 /**************************************************************************
1085  * get_hwnd
1086  **************************************************************************/
1087 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
1088 {
1089     assert (p_mi != NULL);
1090 #if defined (_WIN32) || defined (__OS2__)
1091     return (void *)(uintptr_t)var_GetInteger (p_mi, "drawable-hwnd");
1092 #else
1093     return NULL;
1094 #endif
1095 }
1096
1097 void libvlc_audio_set_callbacks( libvlc_media_player_t *mp,
1098                                  libvlc_audio_play_cb play_cb,
1099                                  libvlc_audio_pause_cb pause_cb,
1100                                  libvlc_audio_resume_cb resume_cb,
1101                                  libvlc_audio_flush_cb flush_cb,
1102                                  libvlc_audio_drain_cb drain_cb,
1103                                  void *opaque )
1104 {
1105     var_SetAddress( mp, "amem-play", play_cb );
1106     var_SetAddress( mp, "amem-pause", pause_cb );
1107     var_SetAddress( mp, "amem-resume", resume_cb );
1108     var_SetAddress( mp, "amem-flush", flush_cb );
1109     var_SetAddress( mp, "amem-drain", drain_cb );
1110     var_SetAddress( mp, "amem-data", opaque );
1111     var_SetString( mp, "aout", "amem,none" );
1112
1113     input_resource_ResetAout(mp->input.p_resource);
1114 }
1115
1116 void libvlc_audio_set_volume_callback( libvlc_media_player_t *mp,
1117                                        libvlc_audio_set_volume_cb cb )
1118 {
1119     var_SetAddress( mp, "amem-set-volume", cb );
1120
1121     input_resource_ResetAout(mp->input.p_resource);
1122 }
1123
1124 void libvlc_audio_set_format_callbacks( libvlc_media_player_t *mp,
1125                                         libvlc_audio_setup_cb setup,
1126                                         libvlc_audio_cleanup_cb cleanup )
1127 {
1128     var_SetAddress( mp, "amem-setup", setup );
1129     var_SetAddress( mp, "amem-cleanup", cleanup );
1130
1131     input_resource_ResetAout(mp->input.p_resource);
1132 }
1133
1134 void libvlc_audio_set_format( libvlc_media_player_t *mp, const char *format,
1135                               unsigned rate, unsigned channels )
1136 {
1137     var_SetString( mp, "amem-format", format );
1138     var_SetInteger( mp, "amem-rate", rate );
1139     var_SetInteger( mp, "amem-channels", channels );
1140
1141     input_resource_ResetAout(mp->input.p_resource);
1142 }
1143
1144
1145 /**************************************************************************
1146  * Getters for stream information
1147  **************************************************************************/
1148 libvlc_time_t libvlc_media_player_get_length(
1149                              libvlc_media_player_t *p_mi )
1150 {
1151     input_thread_t *p_input_thread;
1152     libvlc_time_t i_time;
1153
1154     p_input_thread = libvlc_get_input_thread ( p_mi );
1155     if( !p_input_thread )
1156         return -1;
1157
1158     i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
1159     vlc_object_release( p_input_thread );
1160
1161     return i_time;
1162 }
1163
1164 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
1165 {
1166     input_thread_t *p_input_thread;
1167     libvlc_time_t i_time;
1168
1169     p_input_thread = libvlc_get_input_thread ( p_mi );
1170     if( !p_input_thread )
1171         return -1;
1172
1173     i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
1174     vlc_object_release( p_input_thread );
1175     return i_time;
1176 }
1177
1178 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
1179                                    libvlc_time_t i_time )
1180 {
1181     input_thread_t *p_input_thread;
1182
1183     p_input_thread = libvlc_get_input_thread ( p_mi );
1184     if( !p_input_thread )
1185         return;
1186
1187     var_SetTime( p_input_thread, "time", to_mtime(i_time) );
1188     vlc_object_release( p_input_thread );
1189 }
1190
1191 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
1192                                        float position )
1193 {
1194     input_thread_t *p_input_thread;
1195
1196     p_input_thread = libvlc_get_input_thread ( p_mi );
1197     if( !p_input_thread )
1198         return;
1199
1200     var_SetFloat( p_input_thread, "position", position );
1201     vlc_object_release( p_input_thread );
1202 }
1203
1204 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
1205 {
1206     input_thread_t *p_input_thread;
1207     float f_position;
1208
1209     p_input_thread = libvlc_get_input_thread ( p_mi );
1210     if( !p_input_thread )
1211         return -1.0;
1212
1213     f_position = var_GetFloat( p_input_thread, "position" );
1214     vlc_object_release( p_input_thread );
1215
1216     return f_position;
1217 }
1218
1219 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
1220                                       int chapter )
1221 {
1222     input_thread_t *p_input_thread;
1223
1224     p_input_thread = libvlc_get_input_thread ( p_mi );
1225     if( !p_input_thread )
1226         return;
1227
1228     var_SetInteger( p_input_thread, "chapter", chapter );
1229     vlc_object_release( p_input_thread );
1230 }
1231
1232 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
1233 {
1234     input_thread_t *p_input_thread;
1235     int i_chapter;
1236
1237     p_input_thread = libvlc_get_input_thread ( p_mi );
1238     if( !p_input_thread )
1239         return -1;
1240
1241     i_chapter = var_GetInteger( p_input_thread, "chapter" );
1242     vlc_object_release( p_input_thread );
1243
1244     return i_chapter;
1245 }
1246
1247 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
1248 {
1249     input_thread_t *p_input_thread;
1250     vlc_value_t val;
1251
1252     p_input_thread = libvlc_get_input_thread ( p_mi );
1253     if( !p_input_thread )
1254         return -1;
1255
1256     int i_ret = var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
1257     vlc_object_release( p_input_thread );
1258
1259     return i_ret == VLC_SUCCESS ? val.i_int : -1;
1260 }
1261
1262 int libvlc_media_player_get_chapter_count_for_title(
1263                                  libvlc_media_player_t *p_mi,
1264                                  int i_title )
1265 {
1266     input_thread_t *p_input_thread;
1267     vlc_value_t val;
1268
1269     p_input_thread = libvlc_get_input_thread ( p_mi );
1270     if( !p_input_thread )
1271         return -1;
1272
1273     char *psz_name;
1274     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
1275     {
1276         vlc_object_release( p_input_thread );
1277         return -1;
1278     }
1279     int i_ret = var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
1280     vlc_object_release( p_input_thread );
1281     free( psz_name );
1282
1283     return i_ret == VLC_SUCCESS ? val.i_int : -1;
1284 }
1285
1286 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
1287                                     int i_title )
1288 {
1289     input_thread_t *p_input_thread;
1290
1291     p_input_thread = libvlc_get_input_thread ( p_mi );
1292     if( !p_input_thread )
1293         return;
1294
1295     var_SetInteger( p_input_thread, "title", i_title );
1296     vlc_object_release( p_input_thread );
1297
1298     //send event
1299     libvlc_event_t event;
1300     event.type = libvlc_MediaPlayerTitleChanged;
1301     event.u.media_player_title_changed.new_title = i_title;
1302     libvlc_event_send( p_mi->p_event_manager, &event );
1303 }
1304
1305 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
1306 {
1307     input_thread_t *p_input_thread;
1308     int i_title;
1309
1310     p_input_thread = libvlc_get_input_thread ( p_mi );
1311     if( !p_input_thread )
1312         return -1;
1313
1314     i_title = var_GetInteger( p_input_thread, "title" );
1315     vlc_object_release( p_input_thread );
1316
1317     return i_title;
1318 }
1319
1320 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
1321 {
1322     input_thread_t *p_input_thread;
1323     vlc_value_t val;
1324
1325     p_input_thread = libvlc_get_input_thread ( p_mi );
1326     if( !p_input_thread )
1327         return -1;
1328
1329     int i_ret = var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1330     vlc_object_release( p_input_thread );
1331
1332     return i_ret == VLC_SUCCESS ? val.i_int : -1;
1333 }
1334
1335 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
1336 {
1337     input_thread_t *p_input_thread;
1338
1339     p_input_thread = libvlc_get_input_thread ( p_mi );
1340     if( !p_input_thread )
1341         return;
1342
1343     int i_type = var_Type( p_input_thread, "next-chapter" );
1344     var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1345                             "next-chapter":"next-title" );
1346
1347     vlc_object_release( p_input_thread );
1348 }
1349
1350 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
1351 {
1352     input_thread_t *p_input_thread;
1353
1354     p_input_thread = libvlc_get_input_thread ( p_mi );
1355     if( !p_input_thread )
1356         return;
1357
1358     int i_type = var_Type( p_input_thread, "next-chapter" );
1359     var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1360                             "prev-chapter":"prev-title" );
1361
1362     vlc_object_release( p_input_thread );
1363 }
1364
1365 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
1366 {
1367     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1368     double f_fps = 0.0;
1369
1370     if( p_input_thread )
1371     {
1372         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1373             f_fps = 0.0;
1374         vlc_object_release( p_input_thread );
1375     }
1376     return f_fps;
1377 }
1378
1379 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1380 {
1381     bool b_will_play;
1382     input_thread_t *p_input_thread =
1383                             libvlc_get_input_thread ( p_mi );
1384     if ( !p_input_thread )
1385         return false;
1386
1387     b_will_play = !p_input_thread->b_dead;
1388     vlc_object_release( p_input_thread );
1389
1390     return b_will_play;
1391 }
1392
1393 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1394 {
1395     var_SetFloat (p_mi, "rate", rate);
1396
1397     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1398     if( !p_input_thread )
1399         return 0;
1400     var_SetFloat( p_input_thread, "rate", rate );
1401     vlc_object_release( p_input_thread );
1402     return 0;
1403 }
1404
1405 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1406 {
1407     return var_GetFloat (p_mi, "rate");
1408 }
1409
1410 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1411 {
1412     lock(p_mi);
1413     libvlc_state_t state = p_mi->state;
1414     unlock(p_mi);
1415     return state;
1416 }
1417
1418 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1419 {
1420     input_thread_t *p_input_thread;
1421     bool b_seekable;
1422
1423     p_input_thread = libvlc_get_input_thread ( p_mi );
1424     if ( !p_input_thread )
1425         return false;
1426     b_seekable = var_GetBool( p_input_thread, "can-seek" );
1427     vlc_object_release( p_input_thread );
1428
1429     return b_seekable;
1430 }
1431
1432 void libvlc_media_player_navigate( libvlc_media_player_t* p_mi,
1433                                    unsigned navigate )
1434 {
1435     static const vlc_action_t map[] =
1436     {
1437         INPUT_NAV_ACTIVATE, INPUT_NAV_UP, INPUT_NAV_DOWN,
1438         INPUT_NAV_LEFT, INPUT_NAV_RIGHT,
1439     };
1440
1441     if( navigate >= sizeof(map) / sizeof(map[0]) )
1442       return;
1443
1444     input_thread_t *p_input = libvlc_get_input_thread ( p_mi );
1445     if ( p_input == NULL )
1446       return;
1447
1448     input_Control( p_input, map[navigate], NULL );
1449     vlc_object_release( p_input );
1450 }
1451
1452 /* internal function, used by audio, video */
1453 libvlc_track_description_t *
1454         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1455                                       const char *psz_variable )
1456 {
1457     input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1458     libvlc_track_description_t *p_track_description = NULL,
1459                                *p_actual, *p_previous;
1460
1461     if( !p_input )
1462         return NULL;
1463
1464     vlc_value_t val_list, text_list;
1465     int i_ret = var_Change( p_input, psz_variable, VLC_VAR_GETCHOICES, &val_list, &text_list );
1466     if( i_ret != VLC_SUCCESS )
1467         return NULL;
1468
1469     /* no tracks */
1470     if( val_list.p_list->i_count <= 0 )
1471         goto end;
1472
1473     p_track_description = ( libvlc_track_description_t * )
1474         malloc( sizeof( libvlc_track_description_t ) );
1475     if ( !p_track_description )
1476     {
1477         libvlc_printerr( "Not enough memory" );
1478         goto end;
1479     }
1480     p_actual = p_track_description;
1481     p_previous = NULL;
1482     for( int i = 0; i < val_list.p_list->i_count; i++ )
1483     {
1484         if( !p_actual )
1485         {
1486             p_actual = ( libvlc_track_description_t * )
1487                 malloc( sizeof( libvlc_track_description_t ) );
1488             if ( !p_actual )
1489             {
1490                 libvlc_track_description_list_release( p_track_description );
1491                 libvlc_printerr( "Not enough memory" );
1492                 goto end;
1493             }
1494         }
1495         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1496         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1497         p_actual->p_next = NULL;
1498         if( p_previous )
1499             p_previous->p_next = p_actual;
1500         p_previous = p_actual;
1501         p_actual =  NULL;
1502     }
1503
1504 end:
1505     var_FreeList( &val_list, &text_list );
1506     vlc_object_release( p_input );
1507
1508     return p_track_description;
1509 }
1510
1511 // Deprecated alias for libvlc_track_description_list_release
1512 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1513 {
1514     libvlc_track_description_list_release( p_td );
1515 }
1516
1517 void libvlc_track_description_list_release( libvlc_track_description_t *p_td )
1518 {
1519     libvlc_track_description_t *p_actual, *p_before;
1520     p_actual = p_td;
1521
1522     while ( p_actual )
1523     {
1524         free( p_actual->psz_name );
1525         p_before = p_actual;
1526         p_actual = p_before->p_next;
1527         free( p_before );
1528     }
1529 }
1530
1531 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1532 {
1533     input_thread_t *p_input_thread;
1534     bool b_can_pause;
1535
1536     p_input_thread = libvlc_get_input_thread ( p_mi );
1537     if ( !p_input_thread )
1538         return false;
1539     b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1540     vlc_object_release( p_input_thread );
1541
1542     return b_can_pause;
1543 }
1544
1545 int libvlc_media_player_program_scrambled( libvlc_media_player_t *p_mi )
1546 {
1547     input_thread_t *p_input_thread;
1548     bool b_program_scrambled;
1549
1550     p_input_thread = libvlc_get_input_thread ( p_mi );
1551     if ( !p_input_thread )
1552         return false;
1553     b_program_scrambled = var_GetBool( p_input_thread, "program-scrambled" );
1554     vlc_object_release( p_input_thread );
1555
1556     return b_program_scrambled;
1557 }
1558
1559 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1560 {
1561     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1562     if( p_input_thread != NULL )
1563     {
1564         var_TriggerCallback( p_input_thread, "frame-next" );
1565         vlc_object_release( p_input_thread );
1566     }
1567 }
1568
1569 /**
1570  * Private lookup table to get subpicture alignment flag values corresponding
1571  * to a libvlc_position_t enumerated value.
1572  */
1573 static const unsigned char position_subpicture_alignment[] = {
1574     [libvlc_position_center]       = 0,
1575     [libvlc_position_left]         = SUBPICTURE_ALIGN_LEFT,
1576     [libvlc_position_right]        = SUBPICTURE_ALIGN_RIGHT,
1577     [libvlc_position_top]          = SUBPICTURE_ALIGN_TOP,
1578     [libvlc_position_top_left]     = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_LEFT,
1579     [libvlc_position_top_right]    = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_RIGHT,
1580     [libvlc_position_bottom]       = SUBPICTURE_ALIGN_BOTTOM,
1581     [libvlc_position_bottom_left]  = SUBPICTURE_ALIGN_BOTTOM | SUBPICTURE_ALIGN_LEFT,
1582     [libvlc_position_bottom_right] = SUBPICTURE_ALIGN_BOTTOM | SUBPICTURE_ALIGN_RIGHT
1583 };
1584
1585 void libvlc_media_player_set_video_title_display( libvlc_media_player_t *p_mi, libvlc_position_t position, unsigned timeout )
1586 {
1587     assert( position >= libvlc_position_disable && position <= libvlc_position_bottom_right );
1588
1589     if ( position != libvlc_position_disable )
1590     {
1591         var_SetBool( p_mi, "video-title-show", true );
1592         var_SetInteger( p_mi, "video-title-position", position_subpicture_alignment[position] );
1593         var_SetInteger( p_mi, "video-title-timeout", timeout );
1594     }
1595     else
1596     {
1597         var_SetBool( p_mi, "video-title-show", false );
1598     }
1599 }
1600
1601 /**
1602  * Maximum size of a formatted equalizer amplification band frequency value.
1603  *
1604  * The allowed value range is supposed to be constrained from -20.0 to 20.0.
1605  *
1606  * The format string " %.07f" with a minimum value of "-20" gives a maximum
1607  * string length of e.g. " -19.1234567", i.e. 12 bytes (not including the null
1608  * terminator).
1609  */
1610 #define EQZ_BAND_VALUE_SIZE 12
1611
1612 int libvlc_media_player_set_equalizer( libvlc_media_player_t *p_mi, libvlc_equalizer_t *p_equalizer )
1613 {
1614     char bands[EQZ_BANDS_MAX * EQZ_BAND_VALUE_SIZE + 1];
1615
1616     if( p_equalizer != NULL )
1617     {
1618         for( unsigned i = 0, c = 0; i < EQZ_BANDS_MAX; i++ )
1619         {
1620             c += snprintf( bands + c, sizeof(bands) - c, " %.07f",
1621                           p_equalizer->f_amp[i] );
1622             if( unlikely(c >= sizeof(bands)) )
1623                 return -1;
1624         }
1625
1626         var_SetFloat( p_mi, "equalizer-preamp", p_equalizer->f_preamp );
1627         var_SetString( p_mi, "equalizer-bands", bands );
1628     }
1629     var_SetString( p_mi, "audio-filter", p_equalizer ? "equalizer" : "" );
1630
1631     audio_output_t *p_aout = input_resource_HoldAout( p_mi->input.p_resource );
1632     if( p_aout != NULL )
1633     {
1634         if( p_equalizer != NULL )
1635         {
1636             var_SetFloat( p_aout, "equalizer-preamp", p_equalizer->f_preamp );
1637             var_SetString( p_aout, "equalizer-bands", bands );
1638         }
1639
1640         var_SetString( p_aout, "audio-filter", p_equalizer ? "equalizer" : "" );
1641         vlc_object_release( p_aout );
1642     }
1643
1644     return 0;
1645 }