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 static void libvlc_media_player_destroy( libvlc_media_player_t * );
 467
 468
 469 /**************************************************************************
 470  * Create a Media Instance object.
 471  *
 472  * Refcount strategy:
 473  * - All items created by _new start with a refcount set to 1.
 474  * - Accessor _release decrease the refcount by 1, if after that
 475  *   operation the refcount is 0, the object is destroyed.
 476  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 477  *
 478  * Object locking strategy:
 479  * - No lock held while in constructor.
 480  * - When accessing any member variable this lock is held. (XXX who locks?)
 481  * - When attempting to destroy the object the lock is also held.
 482  **************************************************************************/
 483 libvlc_media_player_t *
 484 libvlc_media_player_new( libvlc_instance_t *instance )
 485 {
 486     libvlc_media_player_t * mp;
 487
 488     assert(instance);
 489
 490     mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
 491     if (unlikely(mp == NULL))
 492     {
 493         libvlc_printerr("Not enough memory");
 494         return NULL;
 495     }
 496
 497     /* Input */
 498     var_Create (mp, "rate", VLC_VAR_FLOAT|VLC_VAR_DOINHERIT);
 499
 500     /* Video */
 501     var_Create (mp, "vout", VLC_VAR_STRING|VLC_VAR_DOINHERIT);
 502     var_Create (mp, "window", VLC_VAR_STRING);
 503     var_Create (mp, "vmem-lock", VLC_VAR_ADDRESS);
 504     var_Create (mp, "vmem-unlock", VLC_VAR_ADDRESS);
 505     var_Create (mp, "vmem-display", VLC_VAR_ADDRESS);
 506     var_Create (mp, "vmem-data", VLC_VAR_ADDRESS);
 507     var_Create (mp, "vmem-setup", VLC_VAR_ADDRESS);
 508     var_Create (mp, "vmem-cleanup", VLC_VAR_ADDRESS);
 509     var_Create (mp, "vmem-chroma", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 510     var_Create (mp, "vmem-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 511     var_Create (mp, "vmem-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 512     var_Create (mp, "vmem-pitch", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 513     var_Create (mp, "avcodec-hw", VLC_VAR_STRING);
 514     var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
 515 #if defined (_WIN32) || defined (__OS2__)
 516     var_Create (mp, "drawable-hwnd", VLC_VAR_INTEGER);
 517 #endif
 518 #ifdef __APPLE__
 519     var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
 520     var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
 521 #endif
 522
 523     var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
 524     var_SetBool (mp, "keyboard-events", true);
 525     var_Create (mp, "mouse-events", VLC_VAR_BOOL);
 526     var_SetBool (mp, "mouse-events", true);
 527
 528     var_Create (mp, "fullscreen", VLC_VAR_BOOL);
 529     var_Create (mp, "autoscale", VLC_VAR_BOOL);
 530     var_SetBool (mp, "autoscale", true);
 531     var_Create (mp, "scale", VLC_VAR_FLOAT);
 532     var_SetFloat (mp, "scale", 1.);
 533     var_Create (mp, "aspect-ratio", VLC_VAR_STRING);
 534     var_Create (mp, "crop", VLC_VAR_STRING);
 535     var_Create (mp, "deinterlace", VLC_VAR_INTEGER);
 536     var_Create (mp, "deinterlace-mode", VLC_VAR_STRING);
 537
 538     var_Create (mp, "vbi-page", VLC_VAR_INTEGER);
 539
 540     var_Create (mp, "marq-marquee", VLC_VAR_STRING);
 541     var_Create (mp, "marq-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 542     var_Create (mp, "marq-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 543     var_Create (mp, "marq-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 544     var_Create (mp, "marq-refresh", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 545     var_Create (mp, "marq-size", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 546     var_Create (mp, "marq-timeout", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 547     var_Create (mp, "marq-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 548     var_Create (mp, "marq-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 549
 550     var_Create (mp, "logo-file", VLC_VAR_STRING);
 551     var_Create (mp, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 552     var_Create (mp, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 553     var_Create (mp, "logo-delay", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 554     var_Create (mp, "logo-repeat", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 555     var_Create (mp, "logo-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 556     var_Create (mp, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 557
 558     var_Create (mp, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 559     var_Create (mp, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 560     var_Create (mp, "hue", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 561     var_Create (mp, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 562     var_Create (mp, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 563
 564      /* Audio */
 565     var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 566     var_Create (mp, "mute", VLC_VAR_BOOL);
 567     var_Create (mp, "volume", VLC_VAR_FLOAT);
 568     var_Create (mp, "corks", VLC_VAR_INTEGER);
 569     var_Create (mp, "audio-filter", VLC_VAR_STRING);
 570     var_Create (mp, "amem-data", VLC_VAR_ADDRESS);
 571     var_Create (mp, "amem-setup", VLC_VAR_ADDRESS);
 572     var_Create (mp, "amem-cleanup", VLC_VAR_ADDRESS);
 573     var_Create (mp, "amem-play", VLC_VAR_ADDRESS);
 574     var_Create (mp, "amem-pause", VLC_VAR_ADDRESS);
 575     var_Create (mp, "amem-resume", VLC_VAR_ADDRESS);
 576     var_Create (mp, "amem-flush", VLC_VAR_ADDRESS);
 577     var_Create (mp, "amem-drain", VLC_VAR_ADDRESS);
 578     var_Create (mp, "amem-set-volume", VLC_VAR_ADDRESS);
 579     var_Create (mp, "amem-format", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 580     var_Create (mp, "amem-rate", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 581     var_Create (mp, "amem-channels", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 582
 583     /* Video Title */
 584     var_Create (mp, "video-title-show", VLC_VAR_BOOL);
 585     var_Create (mp, "video-title-position", VLC_VAR_INTEGER);
 586     var_Create (mp, "video-title-timeout", VLC_VAR_INTEGER);
 587
 588     /* Equalizer */
 589     var_Create (mp, "equalizer-preamp", VLC_VAR_FLOAT);
 590     var_Create (mp, "equalizer-vlcfreqs", VLC_VAR_BOOL);
 591     var_Create (mp, "equalizer-bands", VLC_VAR_STRING);
 592
 593     mp->p_md = NULL;
 594     mp->state = libvlc_NothingSpecial;
 595     mp->p_libvlc_instance = instance;
 596     mp->input.p_thread = NULL;
 597     mp->input.p_resource = input_resource_New(VLC_OBJECT(mp));
 598     if (unlikely(mp->input.p_resource == NULL))
 599     {
 600         vlc_object_release(mp);
 601         return NULL;
 602     }
 603     audio_output_t *aout = input_resource_GetAout(mp->input.p_resource);
 604     if( aout != NULL )
 605         input_resource_PutAout(mp->input.p_resource, aout);
 606
 607     vlc_mutex_init (&mp->input.lock);
 608     mp->i_refcount = 1;
 609     mp->p_event_manager = libvlc_event_manager_new(mp, instance);
 610     if (unlikely(mp->p_event_manager == NULL))
 611     {
 612         input_resource_Release(mp->input.p_resource);
 613         vlc_object_release(mp);
 614         return NULL;
 615     }
 616     vlc_mutex_init(&mp->object_lock);
 617
 618     register_event(mp, NothingSpecial);
 619     register_event(mp, Opening);
 620     register_event(mp, Buffering);
 621     register_event(mp, Playing);
 622     register_event(mp, Paused);
 623     register_event(mp, Stopped);
 624     register_event(mp, Forward);
 625     register_event(mp, Backward);
 626     register_event(mp, EndReached);
 627     register_event(mp, EncounteredError);
 628     register_event(mp, SeekableChanged);
 629
 630     register_event(mp, PositionChanged);
 631     register_event(mp, TimeChanged);
 632     register_event(mp, LengthChanged);
 633     register_event(mp, TitleChanged);
 634     register_event(mp, PausableChanged);
 635
 636     register_event(mp, Vout);
 637     register_event(mp, ScrambledChanged);
 638     register_event(mp, ESAdded);
 639     register_event(mp, ESDeleted);
 640     register_event(mp, ESSelected);
 641
 642     /* Snapshot initialization */
 643     register_event(mp, SnapshotTaken);
 644
 645     register_event(mp, MediaChanged);
 646
 647     /* Attach a var callback to the global object to provide the glue between
 648      * vout_thread that generates the event and media_player that re-emits it
 649      * with its own event manager
 650      *
 651      * FIXME: It's unclear why we want to put this in public API, and why we
 652      * want to expose it in such a limiting and ugly way.
 653      */
 654     var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
 655
 656     libvlc_retain(instance);
 657     return mp;
 658 }
 659
 660 /**************************************************************************
 661  * Create a Media Instance object with a media descriptor.
 662  **************************************************************************/
 663 libvlc_media_player_t *
 664 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
 665 {
 666     libvlc_media_player_t * p_mi;
 667
 668     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
 669     if( !p_mi )
 670         return NULL;
 671
 672     libvlc_media_retain( p_md );
 673     p_mi->p_md = p_md;
 674
 675     return p_mi;
 676 }
 677
 678 /**************************************************************************
 679  * Destroy a Media Instance object (libvlc internal)
 680  *
 681  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 682  **************************************************************************/
 683 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 684 {
 685     assert( p_mi );
 686
 687     /* Detach Callback from the main libvlc object */
 688     var_DelCallback( p_mi->p_libvlc,
 689                      "snapshot-file", snapshot_was_taken, p_mi );
 690
 691     /* No need for lock_input() because no other threads knows us anymore */
 692     if( p_mi->input.p_thread )
 693         release_input_thread(p_mi, true);
 694     input_resource_Terminate( p_mi->input.p_resource );
 695     input_resource_Release( p_mi->input.p_resource );
 696     vlc_mutex_destroy( &p_mi->input.lock );
 697
 698     libvlc_event_manager_release( p_mi->p_event_manager );
 699     libvlc_media_release( p_mi->p_md );
 700     vlc_mutex_destroy( &p_mi->object_lock );
 701
 702     libvlc_instance_t *instance = p_mi->p_libvlc_instance;
 703     vlc_object_release( p_mi );
 704     libvlc_release(instance);
 705 }
 706
 707 /**************************************************************************
 708  * Release a Media Instance object.
 709  *
 710  * Function does the locking.
 711  **************************************************************************/
 712 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 713 {
 714     bool destroy;
 715
 716     assert( p_mi );
 717     lock(p_mi);
 718     destroy = !--p_mi->i_refcount;
 719     unlock(p_mi);
 720
 721     if( destroy )
 722         libvlc_media_player_destroy( p_mi );
 723 }
 724
 725 /**************************************************************************
 726  * Retain a Media Instance object.
 727  *
 728  * Caller must hold the lock.
 729  **************************************************************************/
 730 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 731 {
 732     assert( p_mi );
 733
 734     lock(p_mi);
 735     p_mi->i_refcount++;
 736     unlock(p_mi);
 737 }
 738
 739 /**************************************************************************
 740  * Set the Media descriptor associated with the instance.
 741  *
 742  * Enter without lock -- function will lock the object.
 743  **************************************************************************/
 744 void libvlc_media_player_set_media(
 745                             libvlc_media_player_t *p_mi,
 746                             libvlc_media_t *p_md )
 747 {
 748     lock_input(p_mi);
 749
 750     /* FIXME I am not sure if it is a user request or on die(eof/error)
 751      * request here */
 752     release_input_thread( p_mi,
 753                           p_mi->input.p_thread &&
 754                           !p_mi->input.p_thread->b_eof &&
 755                           !p_mi->input.p_thread->b_error );
 756
 757     lock( p_mi );
 758     set_state( p_mi, libvlc_NothingSpecial, true );
 759     unlock_input( p_mi );
 760
 761     libvlc_media_release( p_mi->p_md );
 762
 763     if( !p_md )
 764     {
 765         p_mi->p_md = NULL;
 766         unlock(p_mi);
 767         return; /* It is ok to pass a NULL md */
 768     }
 769
 770     libvlc_media_retain( p_md );
 771     p_mi->p_md = p_md;
 772
 773     /* The policy here is to ignore that we were created using a different
 774      * libvlc_instance, because we don't really care */
 775     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 776
 777     unlock(p_mi);
 778
 779     /* Send an event for the newly available media */
 780     libvlc_event_t event;
 781     event.type = libvlc_MediaPlayerMediaChanged;
 782     event.u.media_player_media_changed.new_media = p_md;
 783     libvlc_event_send( p_mi->p_event_manager, &event );
 784
 785 }
 786
 787 /**************************************************************************
 788  * Get the Media descriptor associated with the instance.
 789  **************************************************************************/
 790 libvlc_media_t *
 791 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
 792 {
 793     libvlc_media_t *p_m;
 794
 795     lock( p_mi );
 796     p_m = p_mi->p_md;
 797     if( p_m )
 798         libvlc_media_retain( p_m );
 799     unlock( p_mi );
 800
 801     return p_m;
 802 }
 803
 804 /**************************************************************************
 805  * Get the event Manager.
 806  **************************************************************************/
 807 libvlc_event_manager_t *
 808 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
 809 {
 810     return p_mi->p_event_manager;
 811 }
 812
 813 static void add_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi )
 814 {
 815     var_AddListCallback( p_input_thread, "video-es", input_es_changed, p_mi );
 816     var_AddListCallback( p_input_thread, "audio-es", input_es_changed, p_mi );
 817     var_AddListCallback( p_input_thread, "spu-es", input_es_changed, p_mi );
 818     var_AddCallback( p_input_thread, "video-es", input_es_selected, p_mi );
 819     var_AddCallback( p_input_thread, "audio-es", input_es_selected, p_mi );
 820     var_AddCallback( p_input_thread, "spu-es", input_es_selected, p_mi );
 821 }
 822
 823 static void del_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi )
 824 {
 825     var_DelListCallback( p_input_thread, "video-es", input_es_changed, p_mi );
 826     var_DelListCallback( p_input_thread, "audio-es", input_es_changed, p_mi );
 827     var_DelListCallback( p_input_thread, "spu-es", input_es_changed, p_mi );
 828     var_DelCallback( p_input_thread, "video-es", input_es_selected, p_mi );
 829     var_DelCallback( p_input_thread, "audio-es", input_es_selected, p_mi );
 830     var_DelCallback( p_input_thread, "spu-es", input_es_selected, p_mi );
 831 }
 832
 833 /**************************************************************************
 834  * Tell media player to start playing.
 835  **************************************************************************/
 836 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
 837 {
 838     lock_input( p_mi );
 839
 840     input_thread_t *p_input_thread = p_mi->input.p_thread;
 841     if( p_input_thread )
 842     {
 843         /* A thread already exists, send it a play message */
 844         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 845         unlock_input( p_mi );
 846         return 0;
 847     }
 848
 849     /* Ignore previous exception */
 850     lock(p_mi);
 851
 852     if( !p_mi->p_md )
 853     {
 854         unlock(p_mi);
 855         unlock_input( p_mi );
 856         libvlc_printerr( "No associated media descriptor" );
 857         return -1;
 858     }
 859
 860     p_input_thread = input_Create( p_mi, p_mi->p_md->p_input_item, NULL,
 861                                    p_mi->input.p_resource );
 862     unlock(p_mi);
 863     if( !p_input_thread )
 864     {
 865         unlock_input(p_mi);
 866         libvlc_printerr( "Not enough memory" );
 867         return -1;
 868     }
 869
 870     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 871     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 872     var_AddCallback( p_input_thread, "program-scrambled", input_scrambled_changed, p_mi );
 873     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 874     add_es_callbacks( p_input_thread, p_mi );
 875
 876     if( input_Start( p_input_thread ) )
 877     {
 878         unlock_input(p_mi);
 879         del_es_callbacks( p_input_thread, p_mi );
 880         var_DelCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 881         var_DelCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 882         var_DelCallback( p_input_thread, "program-scrambled", input_scrambled_changed, p_mi );
 883         var_DelCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 884         vlc_object_release( p_input_thread );
 885         libvlc_printerr( "Input initialization failure" );
 886         return -1;
 887     }
 888     p_mi->input.p_thread = p_input_thread;
 889     unlock_input(p_mi);
 890     return 0;
 891 }
 892
 893 void libvlc_media_player_set_pause( libvlc_media_player_t *p_mi, int paused )
 894 {
 895     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
 896     if( !p_input_thread )
 897         return;
 898
 899     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 900     if( state == libvlc_Playing || state == libvlc_Buffering )
 901     {
 902         if( paused )
 903         {
 904             if( libvlc_media_player_can_pause( p_mi ) )
 905                 input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 906             else
 907                 input_Stop( p_input_thread, true );
 908         }
 909     }
 910     else
 911     {
 912         if( !paused )
 913             input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 914     }
 915
 916     vlc_object_release( p_input_thread );
 917 }
 918
 919 /**************************************************************************
 920  * Toggle pause.
 921  **************************************************************************/
 922 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
 923 {
 924     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 925     bool playing = (state == libvlc_Playing || state == libvlc_Buffering);
 926
 927     libvlc_media_player_set_pause( p_mi, playing );
 928 }
 929
 930 /**************************************************************************
 931  * Tells whether the media player is currently playing.
 932  *
 933  * Enter with lock held.
 934  **************************************************************************/
 935 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
 936 {
 937     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 938     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 939 }
 940
 941 /**************************************************************************
 942  * Stop playing.
 943  **************************************************************************/
 944 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
 945 {
 946     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 947
 948     lock_input(p_mi);
 949     release_input_thread( p_mi, true ); /* This will stop the input thread */
 950
 951     /* Force to go to stopped state, in case we were in Ended, or Error
 952      * state. */
 953     if( state != libvlc_Stopped )
 954     {
 955         set_state( p_mi, libvlc_Stopped, false );
 956
 957         /* Construct and send the event */
 958         libvlc_event_t event;
 959         event.type = libvlc_MediaPlayerStopped;
 960         libvlc_event_send( p_mi->p_event_manager, &event );
 961     }
 962
 963     input_resource_Terminate( p_mi->input.p_resource );
 964     unlock_input(p_mi);
 965 }
 966
 967
 968 void libvlc_video_set_callbacks( libvlc_media_player_t *mp,
 969     void *(*lock_cb) (void *, void **),
 970     void (*unlock_cb) (void *, void *, void *const *),
 971     void (*display_cb) (void *, void *),
 972     void *opaque )
 973 {
 974     var_SetAddress( mp, "vmem-lock", lock_cb );
 975     var_SetAddress( mp, "vmem-unlock", unlock_cb );
 976     var_SetAddress( mp, "vmem-display", display_cb );
 977     var_SetAddress( mp, "vmem-data", opaque );
 978     var_SetString( mp, "vout", "vmem" );
 979     var_SetString( mp, "avcodec-hw", "none" );
 980 }
 981
 982 void libvlc_video_set_format_callbacks( libvlc_media_player_t *mp,
 983                                         libvlc_video_format_cb setup,
 984                                         libvlc_video_cleanup_cb cleanup )
 985 {
 986     var_SetAddress( mp, "vmem-setup", setup );
 987     var_SetAddress( mp, "vmem-cleanup", cleanup );
 988 }
 989
 990 void libvlc_video_set_format( libvlc_media_player_t *mp, const char *chroma,
 991                               unsigned width, unsigned height, unsigned pitch )
 992 {
 993     var_SetString( mp, "vmem-chroma", chroma );
 994     var_SetInteger( mp, "vmem-width", width );
 995     var_SetInteger( mp, "vmem-height", height );
 996     var_SetInteger( mp, "vmem-pitch", pitch );
 997 }
 998
 999 /**************************************************************************
1000  * set_nsobject
1001  **************************************************************************/
1002 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
1003                                         void * drawable )
1004 {
1005     assert (p_mi != NULL);
1006 #ifdef __APPLE__
1007     var_SetAddress (p_mi, "drawable-nsobject", drawable);
1008 #else
1009     (void) p_mi; (void)drawable;
1010 #endif
1011 }
1012
1013 /**************************************************************************
1014  * get_nsobject
1015  **************************************************************************/
1016 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
1017 {
1018     assert (p_mi != NULL);
1019 #ifdef __APPLE__
1020     return var_GetAddress (p_mi, "drawable-nsobject");
1021 #else
1022     return NULL;
1023 #endif
1024 }
1025
1026 /**************************************************************************
1027  * set_agl
1028  **************************************************************************/
1029 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
1030                                   uint32_t drawable )
1031 {
1032 #ifdef __APPLE__
1033     var_SetInteger (p_mi, "drawable-agl", drawable);
1034 #else
1035     (void) p_mi; (void)drawable;
1036 #endif
1037 }
1038
1039 /**************************************************************************
1040  * get_agl
1041  **************************************************************************/
1042 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
1043 {
1044     assert (p_mi != NULL);
1045 #ifdef __APPLE__
1046     return var_GetInteger (p_mi, "drawable-agl");
1047 #else
1048     return 0;
1049 #endif
1050 }
1051
1052 /**************************************************************************
1053  * set_xwindow
1054  **************************************************************************/
1055 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
1056                                       uint32_t drawable )
1057 {
1058     assert (p_mi != NULL);
1059
1060     var_SetString (p_mi, "avcodec-hw", "");
1061     var_SetString (p_mi, "vout", drawable ? "xid" : "any");
1062     var_SetString (p_mi, "window", drawable ? "embed-xid,any" : "any");
1063     var_SetInteger (p_mi, "drawable-xid", drawable);
1064 }
1065
1066 /**************************************************************************
1067  * get_xwindow
1068  **************************************************************************/
1069 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
1070 {
1071     return var_GetInteger (p_mi, "drawable-xid");
1072 }
1073
1074 /**************************************************************************
1075  * set_hwnd
1076  **************************************************************************/
1077 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
1078                                    void *drawable )
1079 {
1080     assert (p_mi != NULL);
1081 #if defined (_WIN32) || defined (__OS2__)
1082     var_SetString (p_mi, "window",
1083                    (drawable != NULL) ? "embed-hwnd,any" : "");
1084     var_SetInteger (p_mi, "drawable-hwnd", (uintptr_t)drawable);
1085 #else
1086     (void) p_mi; (void) drawable;
1087 #endif
1088 }
1089
1090 /**************************************************************************
1091  * get_hwnd
1092  **************************************************************************/
1093 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
1094 {
1095     assert (p_mi != NULL);
1096 #if defined (_WIN32) || defined (__OS2__)
1097     return (void *)(uintptr_t)var_GetInteger (p_mi, "drawable-hwnd");
1098 #else
1099     return NULL;
1100 #endif
1101 }
1102
1103 void libvlc_audio_set_callbacks( libvlc_media_player_t *mp,
1104                                  libvlc_audio_play_cb play_cb,
1105                                  libvlc_audio_pause_cb pause_cb,
1106                                  libvlc_audio_resume_cb resume_cb,
1107                                  libvlc_audio_flush_cb flush_cb,
1108                                  libvlc_audio_drain_cb drain_cb,
1109                                  void *opaque )
1110 {
1111     var_SetAddress( mp, "amem-play", play_cb );
1112     var_SetAddress( mp, "amem-pause", pause_cb );
1113     var_SetAddress( mp, "amem-resume", resume_cb );
1114     var_SetAddress( mp, "amem-flush", flush_cb );
1115     var_SetAddress( mp, "amem-drain", drain_cb );
1116     var_SetAddress( mp, "amem-data", opaque );
1117     var_SetString( mp, "aout", "amem,none" );
1118
1119     input_resource_ResetAout(mp->input.p_resource);
1120 }
1121
1122 void libvlc_audio_set_volume_callback( libvlc_media_player_t *mp,
1123                                        libvlc_audio_set_volume_cb cb )
1124 {
1125     var_SetAddress( mp, "amem-set-volume", cb );
1126
1127     input_resource_ResetAout(mp->input.p_resource);
1128 }
1129
1130 void libvlc_audio_set_format_callbacks( libvlc_media_player_t *mp,
1131                                         libvlc_audio_setup_cb setup,
1132                                         libvlc_audio_cleanup_cb cleanup )
1133 {
1134     var_SetAddress( mp, "amem-setup", setup );
1135     var_SetAddress( mp, "amem-cleanup", cleanup );
1136
1137     input_resource_ResetAout(mp->input.p_resource);
1138 }
1139
1140 void libvlc_audio_set_format( libvlc_media_player_t *mp, const char *format,
1141                               unsigned rate, unsigned channels )
1142 {
1143     var_SetString( mp, "amem-format", format );
1144     var_SetInteger( mp, "amem-rate", rate );
1145     var_SetInteger( mp, "amem-channels", channels );
1146
1147     input_resource_ResetAout(mp->input.p_resource);
1148 }
1149
1150
1151 /**************************************************************************
1152  * Getters for stream information
1153  **************************************************************************/
1154 libvlc_time_t libvlc_media_player_get_length(
1155                              libvlc_media_player_t *p_mi )
1156 {
1157     input_thread_t *p_input_thread;
1158     libvlc_time_t i_time;
1159
1160     p_input_thread = libvlc_get_input_thread ( p_mi );
1161     if( !p_input_thread )
1162         return -1;
1163
1164     i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
1165     vlc_object_release( p_input_thread );
1166
1167     return i_time;
1168 }
1169
1170 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
1171 {
1172     input_thread_t *p_input_thread;
1173     libvlc_time_t i_time;
1174
1175     p_input_thread = libvlc_get_input_thread ( p_mi );
1176     if( !p_input_thread )
1177         return -1;
1178
1179     i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
1180     vlc_object_release( p_input_thread );
1181     return i_time;
1182 }
1183
1184 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
1185                                    libvlc_time_t i_time )
1186 {
1187     input_thread_t *p_input_thread;
1188
1189     p_input_thread = libvlc_get_input_thread ( p_mi );
1190     if( !p_input_thread )
1191         return;
1192
1193     var_SetTime( p_input_thread, "time", to_mtime(i_time) );
1194     vlc_object_release( p_input_thread );
1195 }
1196
1197 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
1198                                        float position )
1199 {
1200     input_thread_t *p_input_thread;
1201
1202     p_input_thread = libvlc_get_input_thread ( p_mi );
1203     if( !p_input_thread )
1204         return;
1205
1206     var_SetFloat( p_input_thread, "position", position );
1207     vlc_object_release( p_input_thread );
1208 }
1209
1210 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
1211 {
1212     input_thread_t *p_input_thread;
1213     float f_position;
1214
1215     p_input_thread = libvlc_get_input_thread ( p_mi );
1216     if( !p_input_thread )
1217         return -1.0;
1218
1219     f_position = var_GetFloat( p_input_thread, "position" );
1220     vlc_object_release( p_input_thread );
1221
1222     return f_position;
1223 }
1224
1225 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
1226                                       int chapter )
1227 {
1228     input_thread_t *p_input_thread;
1229
1230     p_input_thread = libvlc_get_input_thread ( p_mi );
1231     if( !p_input_thread )
1232         return;
1233
1234     var_SetInteger( p_input_thread, "chapter", chapter );
1235     vlc_object_release( p_input_thread );
1236 }
1237
1238 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
1239 {
1240     input_thread_t *p_input_thread;
1241     int i_chapter;
1242
1243     p_input_thread = libvlc_get_input_thread ( p_mi );
1244     if( !p_input_thread )
1245         return -1;
1246
1247     i_chapter = var_GetInteger( p_input_thread, "chapter" );
1248     vlc_object_release( p_input_thread );
1249
1250     return i_chapter;
1251 }
1252
1253 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
1254 {
1255     input_thread_t *p_input_thread;
1256     vlc_value_t val;
1257
1258     p_input_thread = libvlc_get_input_thread ( p_mi );
1259     if( !p_input_thread )
1260         return -1;
1261
1262     int i_ret = var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
1263     vlc_object_release( p_input_thread );
1264
1265     return i_ret == VLC_SUCCESS ? val.i_int : -1;
1266 }
1267
1268 int libvlc_media_player_get_chapter_count_for_title(
1269                                  libvlc_media_player_t *p_mi,
1270                                  int i_title )
1271 {
1272     input_thread_t *p_input_thread;
1273     vlc_value_t val;
1274
1275     p_input_thread = libvlc_get_input_thread ( p_mi );
1276     if( !p_input_thread )
1277         return -1;
1278
1279     char *psz_name;
1280     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
1281     {
1282         vlc_object_release( p_input_thread );
1283         return -1;
1284     }
1285     int i_ret = var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
1286     vlc_object_release( p_input_thread );
1287     free( psz_name );
1288
1289     return i_ret == VLC_SUCCESS ? val.i_int : -1;
1290 }
1291
1292 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
1293                                     int i_title )
1294 {
1295     input_thread_t *p_input_thread;
1296
1297     p_input_thread = libvlc_get_input_thread ( p_mi );
1298     if( !p_input_thread )
1299         return;
1300
1301     var_SetInteger( p_input_thread, "title", i_title );
1302     vlc_object_release( p_input_thread );
1303
1304     //send event
1305     libvlc_event_t event;
1306     event.type = libvlc_MediaPlayerTitleChanged;
1307     event.u.media_player_title_changed.new_title = i_title;
1308     libvlc_event_send( p_mi->p_event_manager, &event );
1309 }
1310
1311 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
1312 {
1313     input_thread_t *p_input_thread;
1314     int i_title;
1315
1316     p_input_thread = libvlc_get_input_thread ( p_mi );
1317     if( !p_input_thread )
1318         return -1;
1319
1320     i_title = var_GetInteger( p_input_thread, "title" );
1321     vlc_object_release( p_input_thread );
1322
1323     return i_title;
1324 }
1325
1326 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
1327 {
1328     input_thread_t *p_input_thread;
1329     vlc_value_t val;
1330
1331     p_input_thread = libvlc_get_input_thread ( p_mi );
1332     if( !p_input_thread )
1333         return -1;
1334
1335     int i_ret = var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1336     vlc_object_release( p_input_thread );
1337
1338     return i_ret == VLC_SUCCESS ? val.i_int : -1;
1339 }
1340
1341 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
1342 {
1343     input_thread_t *p_input_thread;
1344
1345     p_input_thread = libvlc_get_input_thread ( p_mi );
1346     if( !p_input_thread )
1347         return;
1348
1349     int i_type = var_Type( p_input_thread, "next-chapter" );
1350     var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1351                             "next-chapter":"next-title" );
1352
1353     vlc_object_release( p_input_thread );
1354 }
1355
1356 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
1357 {
1358     input_thread_t *p_input_thread;
1359
1360     p_input_thread = libvlc_get_input_thread ( p_mi );
1361     if( !p_input_thread )
1362         return;
1363
1364     int i_type = var_Type( p_input_thread, "next-chapter" );
1365     var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1366                             "prev-chapter":"prev-title" );
1367
1368     vlc_object_release( p_input_thread );
1369 }
1370
1371 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
1372 {
1373     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1374     double f_fps = 0.0;
1375
1376     if( p_input_thread )
1377     {
1378         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1379             f_fps = 0.0;
1380         vlc_object_release( p_input_thread );
1381     }
1382     return f_fps;
1383 }
1384
1385 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1386 {
1387     bool b_will_play;
1388     input_thread_t *p_input_thread =
1389                             libvlc_get_input_thread ( p_mi );
1390     if ( !p_input_thread )
1391         return false;
1392
1393     b_will_play = !p_input_thread->b_dead;
1394     vlc_object_release( p_input_thread );
1395
1396     return b_will_play;
1397 }
1398
1399 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1400 {
1401     var_SetFloat (p_mi, "rate", rate);
1402
1403     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1404     if( !p_input_thread )
1405         return 0;
1406     var_SetFloat( p_input_thread, "rate", rate );
1407     vlc_object_release( p_input_thread );
1408     return 0;
1409 }
1410
1411 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1412 {
1413     return var_GetFloat (p_mi, "rate");
1414 }
1415
1416 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1417 {
1418     lock(p_mi);
1419     libvlc_state_t state = p_mi->state;
1420     unlock(p_mi);
1421     return state;
1422 }
1423
1424 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1425 {
1426     input_thread_t *p_input_thread;
1427     bool b_seekable;
1428
1429     p_input_thread = libvlc_get_input_thread ( p_mi );
1430     if ( !p_input_thread )
1431         return false;
1432     b_seekable = var_GetBool( p_input_thread, "can-seek" );
1433     vlc_object_release( p_input_thread );
1434
1435     return b_seekable;
1436 }
1437
1438 void libvlc_media_player_navigate( libvlc_media_player_t* p_mi,
1439                                    unsigned navigate )
1440 {
1441     static const vlc_action_t map[] =
1442     {
1443         INPUT_NAV_ACTIVATE, INPUT_NAV_UP, INPUT_NAV_DOWN,
1444         INPUT_NAV_LEFT, INPUT_NAV_RIGHT,
1445     };
1446
1447     if( navigate >= sizeof(map) / sizeof(map[0]) )
1448       return;
1449
1450     input_thread_t *p_input = libvlc_get_input_thread ( p_mi );
1451     if ( p_input == NULL )
1452       return;
1453
1454     input_Control( p_input, map[navigate], NULL );
1455     vlc_object_release( p_input );
1456 }
1457
1458 /* internal function, used by audio, video */
1459 libvlc_track_description_t *
1460         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1461                                       const char *psz_variable )
1462 {
1463     input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1464     libvlc_track_description_t *p_track_description = NULL,
1465                                *p_actual, *p_previous;
1466
1467     if( !p_input )
1468         return NULL;
1469
1470     vlc_value_t val_list, text_list;
1471     int i_ret = var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list );
1472     if( i_ret != VLC_SUCCESS )
1473         return NULL;
1474
1475     /* no tracks */
1476     if( val_list.p_list->i_count <= 0 )
1477         goto end;
1478
1479     p_track_description = ( libvlc_track_description_t * )
1480         malloc( sizeof( libvlc_track_description_t ) );
1481     if ( !p_track_description )
1482     {
1483         libvlc_printerr( "Not enough memory" );
1484         goto end;
1485     }
1486     p_actual = p_track_description;
1487     p_previous = NULL;
1488     for( int i = 0; i < val_list.p_list->i_count; i++ )
1489     {
1490         if( !p_actual )
1491         {
1492             p_actual = ( libvlc_track_description_t * )
1493                 malloc( sizeof( libvlc_track_description_t ) );
1494             if ( !p_actual )
1495             {
1496                 libvlc_track_description_list_release( p_track_description );
1497                 libvlc_printerr( "Not enough memory" );
1498                 goto end;
1499             }
1500         }
1501         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1502         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1503         p_actual->p_next = NULL;
1504         if( p_previous )
1505             p_previous->p_next = p_actual;
1506         p_previous = p_actual;
1507         p_actual =  NULL;
1508     }
1509
1510 end:
1511     var_FreeList( &val_list, &text_list );
1512     vlc_object_release( p_input );
1513
1514     return p_track_description;
1515 }
1516
1517 // Deprecated alias for libvlc_track_description_list_release
1518 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1519 {
1520     libvlc_track_description_list_release( p_td );
1521 }
1522
1523 void libvlc_track_description_list_release( libvlc_track_description_t *p_td )
1524 {
1525     libvlc_track_description_t *p_actual, *p_before;
1526     p_actual = p_td;
1527
1528     while ( p_actual )
1529     {
1530         free( p_actual->psz_name );
1531         p_before = p_actual;
1532         p_actual = p_before->p_next;
1533         free( p_before );
1534     }
1535 }
1536
1537 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1538 {
1539     input_thread_t *p_input_thread;
1540     bool b_can_pause;
1541
1542     p_input_thread = libvlc_get_input_thread ( p_mi );
1543     if ( !p_input_thread )
1544         return false;
1545     b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1546     vlc_object_release( p_input_thread );
1547
1548     return b_can_pause;
1549 }
1550
1551 int libvlc_media_player_program_scrambled( libvlc_media_player_t *p_mi )
1552 {
1553     input_thread_t *p_input_thread;
1554     bool b_program_scrambled;
1555
1556     p_input_thread = libvlc_get_input_thread ( p_mi );
1557     if ( !p_input_thread )
1558         return false;
1559     b_program_scrambled = var_GetBool( p_input_thread, "program-scrambled" );
1560     vlc_object_release( p_input_thread );
1561
1562     return b_program_scrambled;
1563 }
1564
1565 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1566 {
1567     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1568     if( p_input_thread != NULL )
1569     {
1570         var_TriggerCallback( p_input_thread, "frame-next" );
1571         vlc_object_release( p_input_thread );
1572     }
1573 }
1574
1575 /**
1576  * Private lookup table to get subpicture alignment flag values corresponding
1577  * to a libvlc_position_t enumerated value.
1578  */
1579 static const unsigned char position_subpicture_alignment[] = {
1580     [libvlc_position_center]       = 0,
1581     [libvlc_position_left]         = SUBPICTURE_ALIGN_LEFT,
1582     [libvlc_position_right]        = SUBPICTURE_ALIGN_RIGHT,
1583     [libvlc_position_top]          = SUBPICTURE_ALIGN_TOP,
1584     [libvlc_position_top_left]     = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_LEFT,
1585     [libvlc_position_top_right]    = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_RIGHT,
1586     [libvlc_position_bottom]       = SUBPICTURE_ALIGN_BOTTOM,
1587     [libvlc_position_bottom_left]  = SUBPICTURE_ALIGN_BOTTOM | SUBPICTURE_ALIGN_LEFT,
1588     [libvlc_position_bottom_right] = SUBPICTURE_ALIGN_BOTTOM | SUBPICTURE_ALIGN_RIGHT
1589 };
1590
1591 void libvlc_media_player_set_video_title_display( libvlc_media_player_t *p_mi, libvlc_position_t position, unsigned timeout )
1592 {
1593     assert( position >= libvlc_position_disable && position <= libvlc_position_bottom_right );
1594
1595     if ( position != libvlc_position_disable )
1596     {
1597         var_SetBool( p_mi, "video-title-show", true );
1598         var_SetInteger( p_mi, "video-title-position", position_subpicture_alignment[position] );
1599         var_SetInteger( p_mi, "video-title-timeout", timeout );
1600     }
1601     else
1602     {
1603         var_SetBool( p_mi, "video-title-show", false );
1604     }
1605 }
1606
1607 /**
1608  * Maximum size of a formatted equalizer amplification band frequency value.
1609  *
1610  * The allowed value range is supposed to be constrained from -20.0 to 20.0.
1611  *
1612  * The format string " %.07f" with a minimum value of "-20" gives a maximum
1613  * string length of e.g. " -19.1234567", i.e. 12 bytes (not including the null
1614  * terminator).
1615  */
1616 #define EQZ_BAND_VALUE_SIZE 12
1617
1618 int libvlc_media_player_set_equalizer( libvlc_media_player_t *p_mi, libvlc_equalizer_t *p_equalizer )
1619 {
1620     char bands[EQZ_BANDS_MAX * EQZ_BAND_VALUE_SIZE + 1];
1621
1622     if( p_equalizer != NULL )
1623     {
1624         for( unsigned i = 0, c = 0; i < EQZ_BANDS_MAX; i++ )
1625         {
1626             c += snprintf( bands + c, sizeof(bands) - c, " %.07f",
1627                           p_equalizer->f_amp[i] );
1628             if( unlikely(c >= sizeof(bands)) )
1629                 return -1;
1630         }
1631
1632         var_SetFloat( p_mi, "equalizer-preamp", p_equalizer->f_preamp );
1633         var_SetString( p_mi, "equalizer-bands", bands );
1634     }
1635     var_SetString( p_mi, "audio-filter", p_equalizer ? "equalizer" : "" );
1636
1637     audio_output_t *p_aout = input_resource_HoldAout( p_mi->input.p_resource );
1638     if( p_aout != NULL )
1639     {
1640         if( p_equalizer != NULL )
1641         {
1642             var_SetFloat( p_aout, "equalizer-preamp", p_equalizer->f_preamp );
1643             var_SetString( p_aout, "equalizer-bands", bands );
1644         }
1645
1646         var_SetString( p_aout, "audio-filter", p_equalizer ? "equalizer" : "" );
1647         vlc_object_release( p_aout );
1648     }
1649
1650     return 0;
1651 }