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 )
 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 );
 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_DEAD )
 306     {
 307         libvlc_state_t libvlc_state = libvlc_Ended;
 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     var_SetInteger (mp, "vbi-page", 100);
 534
 535     var_Create (mp, "marq-marquee", VLC_VAR_STRING);
 536     var_Create (mp, "marq-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 537     var_Create (mp, "marq-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 538     var_Create (mp, "marq-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 539     var_Create (mp, "marq-refresh", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 540     var_Create (mp, "marq-size", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 541     var_Create (mp, "marq-timeout", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 542     var_Create (mp, "marq-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 543     var_Create (mp, "marq-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 544
 545     var_Create (mp, "logo-file", VLC_VAR_STRING);
 546     var_Create (mp, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 547     var_Create (mp, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 548     var_Create (mp, "logo-delay", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 549     var_Create (mp, "logo-repeat", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 550     var_Create (mp, "logo-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 551     var_Create (mp, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 552
 553     var_Create (mp, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 554     var_Create (mp, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 555     var_Create (mp, "hue", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 556     var_Create (mp, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 557     var_Create (mp, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 558
 559      /* Audio */
 560     var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 561     var_Create (mp, "mute", VLC_VAR_BOOL);
 562     var_Create (mp, "volume", VLC_VAR_FLOAT);
 563     var_Create (mp, "corks", VLC_VAR_INTEGER);
 564     var_Create (mp, "audio-filter", VLC_VAR_STRING);
 565     var_Create (mp, "amem-data", VLC_VAR_ADDRESS);
 566     var_Create (mp, "amem-setup", VLC_VAR_ADDRESS);
 567     var_Create (mp, "amem-cleanup", VLC_VAR_ADDRESS);
 568     var_Create (mp, "amem-play", VLC_VAR_ADDRESS);
 569     var_Create (mp, "amem-pause", VLC_VAR_ADDRESS);
 570     var_Create (mp, "amem-resume", VLC_VAR_ADDRESS);
 571     var_Create (mp, "amem-flush", VLC_VAR_ADDRESS);
 572     var_Create (mp, "amem-drain", VLC_VAR_ADDRESS);
 573     var_Create (mp, "amem-set-volume", VLC_VAR_ADDRESS);
 574     var_Create (mp, "amem-format", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 575     var_Create (mp, "amem-rate", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 576     var_Create (mp, "amem-channels", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 577
 578     /* Video Title */
 579     var_Create (mp, "video-title-show", VLC_VAR_BOOL);
 580     var_Create (mp, "video-title-position", VLC_VAR_INTEGER);
 581     var_Create (mp, "video-title-timeout", VLC_VAR_INTEGER);
 582
 583     /* Equalizer */
 584     var_Create (mp, "equalizer-preamp", VLC_VAR_FLOAT);
 585     var_Create (mp, "equalizer-vlcfreqs", VLC_VAR_BOOL);
 586     var_Create (mp, "equalizer-bands", VLC_VAR_STRING);
 587
 588     mp->p_md = NULL;
 589     mp->state = libvlc_NothingSpecial;
 590     mp->p_libvlc_instance = instance;
 591     mp->input.p_thread = NULL;
 592     mp->input.p_resource = input_resource_New(VLC_OBJECT(mp));
 593     if (unlikely(mp->input.p_resource == NULL))
 594     {
 595         vlc_object_release(mp);
 596         return NULL;
 597     }
 598     audio_output_t *aout = input_resource_GetAout(mp->input.p_resource);
 599     if( aout != NULL )
 600         input_resource_PutAout(mp->input.p_resource, aout);
 601
 602     vlc_mutex_init (&mp->input.lock);
 603     mp->i_refcount = 1;
 604     mp->p_event_manager = libvlc_event_manager_new(mp, instance);
 605     if (unlikely(mp->p_event_manager == NULL))
 606     {
 607         input_resource_Release(mp->input.p_resource);
 608         vlc_object_release(mp);
 609         return NULL;
 610     }
 611     vlc_mutex_init(&mp->object_lock);
 612
 613     register_event(mp, NothingSpecial);
 614     register_event(mp, Opening);
 615     register_event(mp, Buffering);
 616     register_event(mp, Playing);
 617     register_event(mp, Paused);
 618     register_event(mp, Stopped);
 619     register_event(mp, Forward);
 620     register_event(mp, Backward);
 621     register_event(mp, EndReached);
 622     register_event(mp, EncounteredError);
 623     register_event(mp, SeekableChanged);
 624
 625     register_event(mp, PositionChanged);
 626     register_event(mp, TimeChanged);
 627     register_event(mp, LengthChanged);
 628     register_event(mp, TitleChanged);
 629     register_event(mp, PausableChanged);
 630
 631     register_event(mp, Vout);
 632     register_event(mp, ScrambledChanged);
 633     register_event(mp, ESAdded);
 634     register_event(mp, ESDeleted);
 635     register_event(mp, ESSelected);
 636
 637     /* Snapshot initialization */
 638     register_event(mp, SnapshotTaken);
 639
 640     register_event(mp, MediaChanged);
 641
 642     /* Attach a var callback to the global object to provide the glue between
 643      * vout_thread that generates the event and media_player that re-emits it
 644      * with its own event manager
 645      *
 646      * FIXME: It's unclear why we want to put this in public API, and why we
 647      * want to expose it in such a limiting and ugly way.
 648      */
 649     var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
 650
 651     libvlc_retain(instance);
 652     return mp;
 653 }
 654
 655 /**************************************************************************
 656  * Create a Media Instance object with a media descriptor.
 657  **************************************************************************/
 658 libvlc_media_player_t *
 659 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
 660 {
 661     libvlc_media_player_t * p_mi;
 662
 663     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
 664     if( !p_mi )
 665         return NULL;
 666
 667     libvlc_media_retain( p_md );
 668     p_mi->p_md = p_md;
 669
 670     return p_mi;
 671 }
 672
 673 /**************************************************************************
 674  * Destroy a Media Instance object (libvlc internal)
 675  *
 676  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 677  **************************************************************************/
 678 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 679 {
 680     assert( p_mi );
 681
 682     /* Detach Callback from the main libvlc object */
 683     var_DelCallback( p_mi->p_libvlc,
 684                      "snapshot-file", snapshot_was_taken, p_mi );
 685
 686     /* No need for lock_input() because no other threads knows us anymore */
 687     if( p_mi->input.p_thread )
 688         release_input_thread(p_mi);
 689     input_resource_Terminate( p_mi->input.p_resource );
 690     input_resource_Release( p_mi->input.p_resource );
 691     vlc_mutex_destroy( &p_mi->input.lock );
 692
 693     libvlc_event_manager_release( p_mi->p_event_manager );
 694     libvlc_media_release( p_mi->p_md );
 695     vlc_mutex_destroy( &p_mi->object_lock );
 696
 697     libvlc_instance_t *instance = p_mi->p_libvlc_instance;
 698     vlc_object_release( p_mi );
 699     libvlc_release(instance);
 700 }
 701
 702 /**************************************************************************
 703  * Release a Media Instance object.
 704  *
 705  * Function does the locking.
 706  **************************************************************************/
 707 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 708 {
 709     bool destroy;
 710
 711     assert( p_mi );
 712     lock(p_mi);
 713     destroy = !--p_mi->i_refcount;
 714     unlock(p_mi);
 715
 716     if( destroy )
 717         libvlc_media_player_destroy( p_mi );
 718 }
 719
 720 /**************************************************************************
 721  * Retain a Media Instance object.
 722  *
 723  * Caller must hold the lock.
 724  **************************************************************************/
 725 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 726 {
 727     assert( p_mi );
 728
 729     lock(p_mi);
 730     p_mi->i_refcount++;
 731     unlock(p_mi);
 732 }
 733
 734 /**************************************************************************
 735  * Set the Media descriptor associated with the instance.
 736  *
 737  * Enter without lock -- function will lock the object.
 738  **************************************************************************/
 739 void libvlc_media_player_set_media(
 740                             libvlc_media_player_t *p_mi,
 741                             libvlc_media_t *p_md )
 742 {
 743     lock_input(p_mi);
 744
 745     release_input_thread( p_mi );
 746
 747     lock( p_mi );
 748     set_state( p_mi, libvlc_NothingSpecial, true );
 749     unlock_input( p_mi );
 750
 751     libvlc_media_release( p_mi->p_md );
 752
 753     if( !p_md )
 754     {
 755         p_mi->p_md = NULL;
 756         unlock(p_mi);
 757         return; /* It is ok to pass a NULL md */
 758     }
 759
 760     libvlc_media_retain( p_md );
 761     p_mi->p_md = p_md;
 762
 763     /* The policy here is to ignore that we were created using a different
 764      * libvlc_instance, because we don't really care */
 765     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 766
 767     unlock(p_mi);
 768
 769     /* Send an event for the newly available media */
 770     libvlc_event_t event;
 771     event.type = libvlc_MediaPlayerMediaChanged;
 772     event.u.media_player_media_changed.new_media = p_md;
 773     libvlc_event_send( p_mi->p_event_manager, &event );
 774
 775 }
 776
 777 /**************************************************************************
 778  * Get the Media descriptor associated with the instance.
 779  **************************************************************************/
 780 libvlc_media_t *
 781 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
 782 {
 783     libvlc_media_t *p_m;
 784
 785     lock( p_mi );
 786     p_m = p_mi->p_md;
 787     if( p_m )
 788         libvlc_media_retain( p_m );
 789     unlock( p_mi );
 790
 791     return p_m;
 792 }
 793
 794 /**************************************************************************
 795  * Get the event Manager.
 796  **************************************************************************/
 797 libvlc_event_manager_t *
 798 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
 799 {
 800     return p_mi->p_event_manager;
 801 }
 802
 803 static void add_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi )
 804 {
 805     var_AddListCallback( p_input_thread, "video-es", input_es_changed, p_mi );
 806     var_AddListCallback( p_input_thread, "audio-es", input_es_changed, p_mi );
 807     var_AddListCallback( p_input_thread, "spu-es", input_es_changed, p_mi );
 808     var_AddCallback( p_input_thread, "video-es", input_es_selected, p_mi );
 809     var_AddCallback( p_input_thread, "audio-es", input_es_selected, p_mi );
 810     var_AddCallback( p_input_thread, "spu-es", input_es_selected, p_mi );
 811 }
 812
 813 static void del_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi )
 814 {
 815     var_DelListCallback( p_input_thread, "video-es", input_es_changed, p_mi );
 816     var_DelListCallback( p_input_thread, "audio-es", input_es_changed, p_mi );
 817     var_DelListCallback( p_input_thread, "spu-es", input_es_changed, p_mi );
 818     var_DelCallback( p_input_thread, "video-es", input_es_selected, p_mi );
 819     var_DelCallback( p_input_thread, "audio-es", input_es_selected, p_mi );
 820     var_DelCallback( p_input_thread, "spu-es", input_es_selected, p_mi );
 821 }
 822
 823 /**************************************************************************
 824  * Tell media player to start playing.
 825  **************************************************************************/
 826 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
 827 {
 828     lock_input( p_mi );
 829
 830     input_thread_t *p_input_thread = p_mi->input.p_thread;
 831     if( p_input_thread )
 832     {
 833         /* A thread already exists, send it a play message */
 834         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 835         unlock_input( p_mi );
 836         return 0;
 837     }
 838
 839     /* Ignore previous exception */
 840     lock(p_mi);
 841
 842     if( !p_mi->p_md )
 843     {
 844         unlock(p_mi);
 845         unlock_input( p_mi );
 846         libvlc_printerr( "No associated media descriptor" );
 847         return -1;
 848     }
 849
 850     p_input_thread = input_Create( p_mi, p_mi->p_md->p_input_item, NULL,
 851                                    p_mi->input.p_resource );
 852     unlock(p_mi);
 853     if( !p_input_thread )
 854     {
 855         unlock_input(p_mi);
 856         libvlc_printerr( "Not enough memory" );
 857         return -1;
 858     }
 859
 860     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 861     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 862     var_AddCallback( p_input_thread, "program-scrambled", input_scrambled_changed, p_mi );
 863     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 864     add_es_callbacks( p_input_thread, p_mi );
 865
 866     if( input_Start( p_input_thread ) )
 867     {
 868         unlock_input(p_mi);
 869         del_es_callbacks( p_input_thread, p_mi );
 870         var_DelCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 871         var_DelCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 872         var_DelCallback( p_input_thread, "program-scrambled", input_scrambled_changed, p_mi );
 873         var_DelCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 874         vlc_object_release( p_input_thread );
 875         libvlc_printerr( "Input initialization failure" );
 876         return -1;
 877     }
 878     p_mi->input.p_thread = p_input_thread;
 879     unlock_input(p_mi);
 880     return 0;
 881 }
 882
 883 void libvlc_media_player_set_pause( libvlc_media_player_t *p_mi, int paused )
 884 {
 885     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
 886     if( !p_input_thread )
 887         return;
 888
 889     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 890     if( state == libvlc_Playing || state == libvlc_Buffering )
 891     {
 892         if( paused )
 893         {
 894             if( libvlc_media_player_can_pause( p_mi ) )
 895                 input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 896             else
 897                 input_Stop( p_input_thread );
 898         }
 899     }
 900     else
 901     {
 902         if( !paused )
 903             input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 904     }
 905
 906     vlc_object_release( p_input_thread );
 907 }
 908
 909 /**************************************************************************
 910  * Toggle pause.
 911  **************************************************************************/
 912 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
 913 {
 914     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 915     bool playing = (state == libvlc_Playing || state == libvlc_Buffering);
 916
 917     libvlc_media_player_set_pause( p_mi, playing );
 918 }
 919
 920 /**************************************************************************
 921  * Tells whether the media player is currently playing.
 922  *
 923  * Enter with lock held.
 924  **************************************************************************/
 925 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
 926 {
 927     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 928     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 929 }
 930
 931 /**************************************************************************
 932  * Stop playing.
 933  **************************************************************************/
 934 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
 935 {
 936     lock_input(p_mi);
 937     release_input_thread( p_mi ); /* This will stop the input thread */
 938
 939     /* Force to go to stopped state, in case we were in Ended, or Error
 940      * state. */
 941     if( p_mi->state != libvlc_Stopped )
 942     {
 943         set_state( p_mi, libvlc_Stopped, false );
 944
 945         /* Construct and send the event */
 946         libvlc_event_t event;
 947         event.type = libvlc_MediaPlayerStopped;
 948         libvlc_event_send( p_mi->p_event_manager, &event );
 949     }
 950
 951     input_resource_Terminate( p_mi->input.p_resource );
 952     unlock_input(p_mi);
 953 }
 954
 955
 956 void libvlc_video_set_callbacks( libvlc_media_player_t *mp,
 957     void *(*lock_cb) (void *, void **),
 958     void (*unlock_cb) (void *, void *, void *const *),
 959     void (*display_cb) (void *, void *),
 960     void *opaque )
 961 {
 962     var_SetAddress( mp, "vmem-lock", lock_cb );
 963     var_SetAddress( mp, "vmem-unlock", unlock_cb );
 964     var_SetAddress( mp, "vmem-display", display_cb );
 965     var_SetAddress( mp, "vmem-data", opaque );
 966     var_SetString( mp, "vout", "vmem" );
 967     var_SetString( mp, "avcodec-hw", "none" );
 968 }
 969
 970 void libvlc_video_set_format_callbacks( libvlc_media_player_t *mp,
 971                                         libvlc_video_format_cb setup,
 972                                         libvlc_video_cleanup_cb cleanup )
 973 {
 974     var_SetAddress( mp, "vmem-setup", setup );
 975     var_SetAddress( mp, "vmem-cleanup", cleanup );
 976 }
 977
 978 void libvlc_video_set_format( libvlc_media_player_t *mp, const char *chroma,
 979                               unsigned width, unsigned height, unsigned pitch )
 980 {
 981     var_SetString( mp, "vmem-chroma", chroma );
 982     var_SetInteger( mp, "vmem-width", width );
 983     var_SetInteger( mp, "vmem-height", height );
 984     var_SetInteger( mp, "vmem-pitch", pitch );
 985 }
 986
 987 /**************************************************************************
 988  * set_nsobject
 989  **************************************************************************/
 990 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 991                                         void * drawable )
 992 {
 993     assert (p_mi != NULL);
 994 #ifdef __APPLE__
 995     var_SetAddress (p_mi, "drawable-nsobject", drawable);
 996 #else
 997     (void) p_mi; (void)drawable;
 998 #endif
 999 }
1000
1001 /**************************************************************************
1002  * get_nsobject
1003  **************************************************************************/
1004 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
1005 {
1006     assert (p_mi != NULL);
1007 #ifdef __APPLE__
1008     return var_GetAddress (p_mi, "drawable-nsobject");
1009 #else
1010     return NULL;
1011 #endif
1012 }
1013
1014 /**************************************************************************
1015  * set_agl
1016  **************************************************************************/
1017 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
1018                                   uint32_t drawable )
1019 {
1020 #ifdef __APPLE__
1021     var_SetInteger (p_mi, "drawable-agl", drawable);
1022 #else
1023     (void) p_mi; (void)drawable;
1024 #endif
1025 }
1026
1027 /**************************************************************************
1028  * get_agl
1029  **************************************************************************/
1030 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
1031 {
1032     assert (p_mi != NULL);
1033 #ifdef __APPLE__
1034     return var_GetInteger (p_mi, "drawable-agl");
1035 #else
1036     return 0;
1037 #endif
1038 }
1039
1040 /**************************************************************************
1041  * set_xwindow
1042  **************************************************************************/
1043 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
1044                                       uint32_t drawable )
1045 {
1046     assert (p_mi != NULL);
1047
1048     var_SetString (p_mi, "avcodec-hw", "");
1049     var_SetString (p_mi, "vout", drawable ? "xid" : "any");
1050     var_SetString (p_mi, "window", drawable ? "embed-xid,any" : "any");
1051     var_SetInteger (p_mi, "drawable-xid", drawable);
1052 }
1053
1054 /**************************************************************************
1055  * get_xwindow
1056  **************************************************************************/
1057 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
1058 {
1059     return var_GetInteger (p_mi, "drawable-xid");
1060 }
1061
1062 /**************************************************************************
1063  * set_hwnd
1064  **************************************************************************/
1065 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
1066                                    void *drawable )
1067 {
1068     assert (p_mi != NULL);
1069 #if defined (_WIN32) || defined (__OS2__)
1070     var_SetString (p_mi, "window",
1071                    (drawable != NULL) ? "embed-hwnd,any" : "");
1072     var_SetInteger (p_mi, "drawable-hwnd", (uintptr_t)drawable);
1073 #else
1074     (void) p_mi; (void) drawable;
1075 #endif
1076 }
1077
1078 /**************************************************************************
1079  * get_hwnd
1080  **************************************************************************/
1081 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
1082 {
1083     assert (p_mi != NULL);
1084 #if defined (_WIN32) || defined (__OS2__)
1085     return (void *)(uintptr_t)var_GetInteger (p_mi, "drawable-hwnd");
1086 #else
1087     return NULL;
1088 #endif
1089 }
1090
1091 void libvlc_audio_set_callbacks( libvlc_media_player_t *mp,
1092                                  libvlc_audio_play_cb play_cb,
1093                                  libvlc_audio_pause_cb pause_cb,
1094                                  libvlc_audio_resume_cb resume_cb,
1095                                  libvlc_audio_flush_cb flush_cb,
1096                                  libvlc_audio_drain_cb drain_cb,
1097                                  void *opaque )
1098 {
1099     var_SetAddress( mp, "amem-play", play_cb );
1100     var_SetAddress( mp, "amem-pause", pause_cb );
1101     var_SetAddress( mp, "amem-resume", resume_cb );
1102     var_SetAddress( mp, "amem-flush", flush_cb );
1103     var_SetAddress( mp, "amem-drain", drain_cb );
1104     var_SetAddress( mp, "amem-data", opaque );
1105     var_SetString( mp, "aout", "amem,none" );
1106
1107     input_resource_ResetAout(mp->input.p_resource);
1108 }
1109
1110 void libvlc_audio_set_volume_callback( libvlc_media_player_t *mp,
1111                                        libvlc_audio_set_volume_cb cb )
1112 {
1113     var_SetAddress( mp, "amem-set-volume", cb );
1114
1115     input_resource_ResetAout(mp->input.p_resource);
1116 }
1117
1118 void libvlc_audio_set_format_callbacks( libvlc_media_player_t *mp,
1119                                         libvlc_audio_setup_cb setup,
1120                                         libvlc_audio_cleanup_cb cleanup )
1121 {
1122     var_SetAddress( mp, "amem-setup", setup );
1123     var_SetAddress( mp, "amem-cleanup", cleanup );
1124
1125     input_resource_ResetAout(mp->input.p_resource);
1126 }
1127
1128 void libvlc_audio_set_format( libvlc_media_player_t *mp, const char *format,
1129                               unsigned rate, unsigned channels )
1130 {
1131     var_SetString( mp, "amem-format", format );
1132     var_SetInteger( mp, "amem-rate", rate );
1133     var_SetInteger( mp, "amem-channels", channels );
1134
1135     input_resource_ResetAout(mp->input.p_resource);
1136 }
1137
1138
1139 /**************************************************************************
1140  * Getters for stream information
1141  **************************************************************************/
1142 libvlc_time_t libvlc_media_player_get_length(
1143                              libvlc_media_player_t *p_mi )
1144 {
1145     input_thread_t *p_input_thread;
1146     libvlc_time_t i_time;
1147
1148     p_input_thread = libvlc_get_input_thread ( p_mi );
1149     if( !p_input_thread )
1150         return -1;
1151
1152     i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
1153     vlc_object_release( p_input_thread );
1154
1155     return i_time;
1156 }
1157
1158 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
1159 {
1160     input_thread_t *p_input_thread;
1161     libvlc_time_t i_time;
1162
1163     p_input_thread = libvlc_get_input_thread ( p_mi );
1164     if( !p_input_thread )
1165         return -1;
1166
1167     i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
1168     vlc_object_release( p_input_thread );
1169     return i_time;
1170 }
1171
1172 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
1173                                    libvlc_time_t i_time )
1174 {
1175     input_thread_t *p_input_thread;
1176
1177     p_input_thread = libvlc_get_input_thread ( p_mi );
1178     if( !p_input_thread )
1179         return;
1180
1181     var_SetTime( p_input_thread, "time", to_mtime(i_time) );
1182     vlc_object_release( p_input_thread );
1183 }
1184
1185 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
1186                                        float position )
1187 {
1188     input_thread_t *p_input_thread;
1189
1190     p_input_thread = libvlc_get_input_thread ( p_mi );
1191     if( !p_input_thread )
1192         return;
1193
1194     var_SetFloat( p_input_thread, "position", position );
1195     vlc_object_release( p_input_thread );
1196 }
1197
1198 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
1199 {
1200     input_thread_t *p_input_thread;
1201     float f_position;
1202
1203     p_input_thread = libvlc_get_input_thread ( p_mi );
1204     if( !p_input_thread )
1205         return -1.0;
1206
1207     f_position = var_GetFloat( p_input_thread, "position" );
1208     vlc_object_release( p_input_thread );
1209
1210     return f_position;
1211 }
1212
1213 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
1214                                       int chapter )
1215 {
1216     input_thread_t *p_input_thread;
1217
1218     p_input_thread = libvlc_get_input_thread ( p_mi );
1219     if( !p_input_thread )
1220         return;
1221
1222     var_SetInteger( p_input_thread, "chapter", chapter );
1223     vlc_object_release( p_input_thread );
1224 }
1225
1226 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
1227 {
1228     input_thread_t *p_input_thread;
1229     int i_chapter;
1230
1231     p_input_thread = libvlc_get_input_thread ( p_mi );
1232     if( !p_input_thread )
1233         return -1;
1234
1235     i_chapter = var_GetInteger( p_input_thread, "chapter" );
1236     vlc_object_release( p_input_thread );
1237
1238     return i_chapter;
1239 }
1240
1241 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
1242 {
1243     input_thread_t *p_input_thread;
1244     vlc_value_t val;
1245
1246     p_input_thread = libvlc_get_input_thread ( p_mi );
1247     if( !p_input_thread )
1248         return -1;
1249
1250     int i_ret = var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
1251     vlc_object_release( p_input_thread );
1252
1253     return i_ret == VLC_SUCCESS ? val.i_int : -1;
1254 }
1255
1256 int libvlc_media_player_get_chapter_count_for_title(
1257                                  libvlc_media_player_t *p_mi,
1258                                  int i_title )
1259 {
1260     input_thread_t *p_input_thread;
1261     vlc_value_t val;
1262
1263     p_input_thread = libvlc_get_input_thread ( p_mi );
1264     if( !p_input_thread )
1265         return -1;
1266
1267     char *psz_name;
1268     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
1269     {
1270         vlc_object_release( p_input_thread );
1271         return -1;
1272     }
1273     int i_ret = var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
1274     vlc_object_release( p_input_thread );
1275     free( psz_name );
1276
1277     return i_ret == VLC_SUCCESS ? val.i_int : -1;
1278 }
1279
1280 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
1281                                     int i_title )
1282 {
1283     input_thread_t *p_input_thread;
1284
1285     p_input_thread = libvlc_get_input_thread ( p_mi );
1286     if( !p_input_thread )
1287         return;
1288
1289     var_SetInteger( p_input_thread, "title", i_title );
1290     vlc_object_release( p_input_thread );
1291
1292     //send event
1293     libvlc_event_t event;
1294     event.type = libvlc_MediaPlayerTitleChanged;
1295     event.u.media_player_title_changed.new_title = i_title;
1296     libvlc_event_send( p_mi->p_event_manager, &event );
1297 }
1298
1299 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
1300 {
1301     input_thread_t *p_input_thread;
1302     int i_title;
1303
1304     p_input_thread = libvlc_get_input_thread ( p_mi );
1305     if( !p_input_thread )
1306         return -1;
1307
1308     i_title = var_GetInteger( p_input_thread, "title" );
1309     vlc_object_release( p_input_thread );
1310
1311     return i_title;
1312 }
1313
1314 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
1315 {
1316     input_thread_t *p_input_thread;
1317     vlc_value_t val;
1318
1319     p_input_thread = libvlc_get_input_thread ( p_mi );
1320     if( !p_input_thread )
1321         return -1;
1322
1323     int i_ret = var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1324     vlc_object_release( p_input_thread );
1325
1326     return i_ret == VLC_SUCCESS ? val.i_int : -1;
1327 }
1328
1329 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
1330 {
1331     input_thread_t *p_input_thread;
1332
1333     p_input_thread = libvlc_get_input_thread ( p_mi );
1334     if( !p_input_thread )
1335         return;
1336
1337     int i_type = var_Type( p_input_thread, "next-chapter" );
1338     var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1339                             "next-chapter":"next-title" );
1340
1341     vlc_object_release( p_input_thread );
1342 }
1343
1344 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
1345 {
1346     input_thread_t *p_input_thread;
1347
1348     p_input_thread = libvlc_get_input_thread ( p_mi );
1349     if( !p_input_thread )
1350         return;
1351
1352     int i_type = var_Type( p_input_thread, "next-chapter" );
1353     var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1354                             "prev-chapter":"prev-title" );
1355
1356     vlc_object_release( p_input_thread );
1357 }
1358
1359 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
1360 {
1361     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1362     double f_fps = 0.0;
1363
1364     if( p_input_thread )
1365     {
1366         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1367             f_fps = 0.0;
1368         vlc_object_release( p_input_thread );
1369     }
1370     return f_fps;
1371 }
1372
1373 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1374 {
1375     bool b_will_play;
1376     input_thread_t *p_input_thread =
1377                             libvlc_get_input_thread ( p_mi );
1378     if ( !p_input_thread )
1379         return false;
1380
1381     b_will_play = !p_input_thread->b_dead;
1382     vlc_object_release( p_input_thread );
1383
1384     return b_will_play;
1385 }
1386
1387 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1388 {
1389     var_SetFloat (p_mi, "rate", rate);
1390
1391     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1392     if( !p_input_thread )
1393         return 0;
1394     var_SetFloat( p_input_thread, "rate", rate );
1395     vlc_object_release( p_input_thread );
1396     return 0;
1397 }
1398
1399 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1400 {
1401     return var_GetFloat (p_mi, "rate");
1402 }
1403
1404 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1405 {
1406     lock(p_mi);
1407     libvlc_state_t state = p_mi->state;
1408     unlock(p_mi);
1409     return state;
1410 }
1411
1412 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1413 {
1414     input_thread_t *p_input_thread;
1415     bool b_seekable;
1416
1417     p_input_thread = libvlc_get_input_thread ( p_mi );
1418     if ( !p_input_thread )
1419         return false;
1420     b_seekable = var_GetBool( p_input_thread, "can-seek" );
1421     vlc_object_release( p_input_thread );
1422
1423     return b_seekable;
1424 }
1425
1426 void libvlc_media_player_navigate( libvlc_media_player_t* p_mi,
1427                                    unsigned navigate )
1428 {
1429     static const vlc_action_t map[] =
1430     {
1431         INPUT_NAV_ACTIVATE, INPUT_NAV_UP, INPUT_NAV_DOWN,
1432         INPUT_NAV_LEFT, INPUT_NAV_RIGHT,
1433     };
1434
1435     if( navigate >= sizeof(map) / sizeof(map[0]) )
1436       return;
1437
1438     input_thread_t *p_input = libvlc_get_input_thread ( p_mi );
1439     if ( p_input == NULL )
1440       return;
1441
1442     input_Control( p_input, map[navigate], NULL );
1443     vlc_object_release( p_input );
1444 }
1445
1446 /* internal function, used by audio, video */
1447 libvlc_track_description_t *
1448         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1449                                       const char *psz_variable )
1450 {
1451     input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1452     libvlc_track_description_t *p_track_description = NULL,
1453                                *p_actual, *p_previous;
1454
1455     if( !p_input )
1456         return NULL;
1457
1458     vlc_value_t val_list, text_list;
1459     int i_ret = var_Change( p_input, psz_variable, VLC_VAR_GETCHOICES, &val_list, &text_list );
1460     if( i_ret != VLC_SUCCESS )
1461         return NULL;
1462
1463     /* no tracks */
1464     if( val_list.p_list->i_count <= 0 )
1465         goto end;
1466
1467     p_track_description = ( libvlc_track_description_t * )
1468         malloc( sizeof( libvlc_track_description_t ) );
1469     if ( !p_track_description )
1470     {
1471         libvlc_printerr( "Not enough memory" );
1472         goto end;
1473     }
1474     p_actual = p_track_description;
1475     p_previous = NULL;
1476     for( int i = 0; i < val_list.p_list->i_count; i++ )
1477     {
1478         if( !p_actual )
1479         {
1480             p_actual = ( libvlc_track_description_t * )
1481                 malloc( sizeof( libvlc_track_description_t ) );
1482             if ( !p_actual )
1483             {
1484                 libvlc_track_description_list_release( p_track_description );
1485                 libvlc_printerr( "Not enough memory" );
1486                 goto end;
1487             }
1488         }
1489         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1490         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1491         p_actual->p_next = NULL;
1492         if( p_previous )
1493             p_previous->p_next = p_actual;
1494         p_previous = p_actual;
1495         p_actual =  NULL;
1496     }
1497
1498 end:
1499     var_FreeList( &val_list, &text_list );
1500     vlc_object_release( p_input );
1501
1502     return p_track_description;
1503 }
1504
1505 // Deprecated alias for libvlc_track_description_list_release
1506 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1507 {
1508     libvlc_track_description_list_release( p_td );
1509 }
1510
1511 void libvlc_track_description_list_release( libvlc_track_description_t *p_td )
1512 {
1513     libvlc_track_description_t *p_actual, *p_before;
1514     p_actual = p_td;
1515
1516     while ( p_actual )
1517     {
1518         free( p_actual->psz_name );
1519         p_before = p_actual;
1520         p_actual = p_before->p_next;
1521         free( p_before );
1522     }
1523 }
1524
1525 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1526 {
1527     input_thread_t *p_input_thread;
1528     bool b_can_pause;
1529
1530     p_input_thread = libvlc_get_input_thread ( p_mi );
1531     if ( !p_input_thread )
1532         return false;
1533     b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1534     vlc_object_release( p_input_thread );
1535
1536     return b_can_pause;
1537 }
1538
1539 int libvlc_media_player_program_scrambled( libvlc_media_player_t *p_mi )
1540 {
1541     input_thread_t *p_input_thread;
1542     bool b_program_scrambled;
1543
1544     p_input_thread = libvlc_get_input_thread ( p_mi );
1545     if ( !p_input_thread )
1546         return false;
1547     b_program_scrambled = var_GetBool( p_input_thread, "program-scrambled" );
1548     vlc_object_release( p_input_thread );
1549
1550     return b_program_scrambled;
1551 }
1552
1553 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1554 {
1555     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1556     if( p_input_thread != NULL )
1557     {
1558         var_TriggerCallback( p_input_thread, "frame-next" );
1559         vlc_object_release( p_input_thread );
1560     }
1561 }
1562
1563 /**
1564  * Private lookup table to get subpicture alignment flag values corresponding
1565  * to a libvlc_position_t enumerated value.
1566  */
1567 static const unsigned char position_subpicture_alignment[] = {
1568     [libvlc_position_center]       = 0,
1569     [libvlc_position_left]         = SUBPICTURE_ALIGN_LEFT,
1570     [libvlc_position_right]        = SUBPICTURE_ALIGN_RIGHT,
1571     [libvlc_position_top]          = SUBPICTURE_ALIGN_TOP,
1572     [libvlc_position_top_left]     = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_LEFT,
1573     [libvlc_position_top_right]    = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_RIGHT,
1574     [libvlc_position_bottom]       = SUBPICTURE_ALIGN_BOTTOM,
1575     [libvlc_position_bottom_left]  = SUBPICTURE_ALIGN_BOTTOM | SUBPICTURE_ALIGN_LEFT,
1576     [libvlc_position_bottom_right] = SUBPICTURE_ALIGN_BOTTOM | SUBPICTURE_ALIGN_RIGHT
1577 };
1578
1579 void libvlc_media_player_set_video_title_display( libvlc_media_player_t *p_mi, libvlc_position_t position, unsigned timeout )
1580 {
1581     assert( position >= libvlc_position_disable && position <= libvlc_position_bottom_right );
1582
1583     if ( position != libvlc_position_disable )
1584     {
1585         var_SetBool( p_mi, "video-title-show", true );
1586         var_SetInteger( p_mi, "video-title-position", position_subpicture_alignment[position] );
1587         var_SetInteger( p_mi, "video-title-timeout", timeout );
1588     }
1589     else
1590     {
1591         var_SetBool( p_mi, "video-title-show", false );
1592     }
1593 }
1594
1595 /**
1596  * Maximum size of a formatted equalizer amplification band frequency value.
1597  *
1598  * The allowed value range is supposed to be constrained from -20.0 to 20.0.
1599  *
1600  * The format string " %.07f" with a minimum value of "-20" gives a maximum
1601  * string length of e.g. " -19.1234567", i.e. 12 bytes (not including the null
1602  * terminator).
1603  */
1604 #define EQZ_BAND_VALUE_SIZE 12
1605
1606 int libvlc_media_player_set_equalizer( libvlc_media_player_t *p_mi, libvlc_equalizer_t *p_equalizer )
1607 {
1608     char bands[EQZ_BANDS_MAX * EQZ_BAND_VALUE_SIZE + 1];
1609
1610     if( p_equalizer != NULL )
1611     {
1612         for( unsigned i = 0, c = 0; i < EQZ_BANDS_MAX; i++ )
1613         {
1614             c += snprintf( bands + c, sizeof(bands) - c, " %.07f",
1615                           p_equalizer->f_amp[i] );
1616             if( unlikely(c >= sizeof(bands)) )
1617                 return -1;
1618         }
1619
1620         var_SetFloat( p_mi, "equalizer-preamp", p_equalizer->f_preamp );
1621         var_SetString( p_mi, "equalizer-bands", bands );
1622     }
1623     var_SetString( p_mi, "audio-filter", p_equalizer ? "equalizer" : "" );
1624
1625     audio_output_t *p_aout = input_resource_HoldAout( p_mi->input.p_resource );
1626     if( p_aout != NULL )
1627     {
1628         if( p_equalizer != NULL )
1629         {
1630             var_SetFloat( p_aout, "equalizer-preamp", p_equalizer->f_preamp );
1631             var_SetString( p_aout, "equalizer-bands", bands );
1632         }
1633
1634         var_SetString( p_aout, "audio-filter", p_equalizer ? "equalizer" : "" );
1635         vlc_object_release( p_aout );
1636     }
1637
1638     return 0;
1639 }