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 snapshot_was_taken( vlc_object_t *p_this, char const *psz_cmd,
  62                     vlc_value_t oldval, vlc_value_t newval, void *p_data );
  63
  64 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi );
  65
  66 /*
  67  * Shortcuts
  68  */
  69
  70 #define register_event(a, b) __register_event(a, libvlc_MediaPlayer ## b)
  71 static inline void __register_event(libvlc_media_player_t *mp, libvlc_event_type_t type)
  72 {
  73     libvlc_event_manager_register_event_type(mp->p_event_manager, type);
  74 }
  75
  76 /*
  77  * The input lock protects the input and input resource pointer.
  78  * It MUST NOT be used from callbacks.
  79  *
  80  * The object lock protects the reset, namely the media and the player state.
  81  * It can, and usually needs to be taken from callbacks.
  82  * The object lock can be acquired under the input lock... and consequently
  83  * the opposite order is STRICTLY PROHIBITED.
  84  */
  85 static inline void lock(libvlc_media_player_t *mp)
  86 {
  87     vlc_mutex_lock(&mp->object_lock);
  88 }
  89
  90 static inline void unlock(libvlc_media_player_t *mp)
  91 {
  92     vlc_mutex_unlock(&mp->object_lock);
  93 }
  94
  95 static inline void lock_input(libvlc_media_player_t *mp)
  96 {
  97     vlc_mutex_lock(&mp->input.lock);
  98 }
  99
 100 static inline void unlock_input(libvlc_media_player_t *mp)
 101 {
 102     vlc_mutex_unlock(&mp->input.lock);
 103 }
 104
 105 /*
 106  * Release the associated input thread.
 107  *
 108  * Object lock is NOT held.
 109  * Input lock is held or instance is being destroyed.
 110  */
 111 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
 112 {
 113     assert( p_mi );
 114
 115     input_thread_t *p_input_thread = p_mi->input.p_thread;
 116     if( !p_input_thread )
 117         return;
 118     p_mi->input.p_thread = NULL;
 119
 120     var_DelCallback( p_input_thread, "can-seek",
 121                      input_seekable_changed, p_mi );
 122     var_DelCallback( p_input_thread, "can-pause",
 123                     input_pausable_changed, p_mi );
 124     var_DelCallback( p_input_thread, "program-scrambled",
 125                     input_scrambled_changed, p_mi );
 126     var_DelCallback( p_input_thread, "intf-event",
 127                      input_event_changed, p_mi );
 128
 129     /* We owned this one */
 130     input_Stop( p_input_thread, b_input_abort );
 131     input_Close( p_input_thread );
 132 }
 133
 134 /*
 135  * Retrieve the input thread. Be sure to release the object
 136  * once you are done with it. (libvlc Internal)
 137  */
 138 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi )
 139 {
 140     input_thread_t *p_input_thread;
 141
 142     assert( p_mi );
 143
 144     lock_input(p_mi);
 145     p_input_thread = p_mi->input.p_thread;
 146     if( p_input_thread )
 147         vlc_object_hold( p_input_thread );
 148     else
 149         libvlc_printerr( "No active input" );
 150     unlock_input(p_mi);
 151
 152     return p_input_thread;
 153 }
 154
 155 /*
 156  * Set the internal state of the media_player. (media player Internal)
 157  *
 158  * Function will lock the media_player.
 159  */
 160 static void set_state( libvlc_media_player_t *p_mi, libvlc_state_t state,
 161     bool b_locked )
 162 {
 163     if(!b_locked)
 164         lock(p_mi);
 165     p_mi->state = state;
 166
 167     libvlc_media_t *media = p_mi->p_md;
 168     if (media)
 169         libvlc_media_retain(media);
 170
 171     if(!b_locked)
 172         unlock(p_mi);
 173
 174     if (media)
 175     {
 176         // Also set the state of the corresponding media
 177         // This is strictly for convenience.
 178         libvlc_media_set_state(media, state);
 179
 180         libvlc_media_release(media);
 181     }
 182 }
 183
 184 static int
 185 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 186                         vlc_value_t oldval, vlc_value_t newval,
 187                         void * p_userdata )
 188 {
 189     VLC_UNUSED(oldval);
 190     VLC_UNUSED(p_this);
 191     VLC_UNUSED(psz_cmd);
 192     libvlc_media_player_t * p_mi = p_userdata;
 193     libvlc_event_t event;
 194
 195     event.type = libvlc_MediaPlayerSeekableChanged;
 196     event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
 197
 198     libvlc_event_send( p_mi->p_event_manager, &event );
 199     return VLC_SUCCESS;
 200 }
 201
 202 static int
 203 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 204                         vlc_value_t oldval, vlc_value_t newval,
 205                         void * p_userdata )
 206 {
 207     VLC_UNUSED(oldval);
 208     VLC_UNUSED(p_this);
 209     VLC_UNUSED(psz_cmd);
 210     libvlc_media_player_t * p_mi = p_userdata;
 211     libvlc_event_t event;
 212
 213     event.type = libvlc_MediaPlayerPausableChanged;
 214     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 215
 216     libvlc_event_send( p_mi->p_event_manager, &event );
 217     return VLC_SUCCESS;
 218 }
 219
 220 static int
 221 input_scrambled_changed( vlc_object_t * p_this, char const * psz_cmd,
 222                         vlc_value_t oldval, vlc_value_t newval,
 223                         void * p_userdata )
 224 {
 225     VLC_UNUSED(oldval);
 226     VLC_UNUSED(p_this);
 227     VLC_UNUSED(psz_cmd);
 228     libvlc_media_player_t * p_mi = p_userdata;
 229     libvlc_event_t event;
 230
 231     event.type = libvlc_MediaPlayerScrambledChanged;
 232     event.u.media_player_scrambled_changed.new_scrambled = newval.b_bool;
 233
 234     libvlc_event_send( p_mi->p_event_manager, &event );
 235     return VLC_SUCCESS;
 236 }
 237
 238 static int
 239 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 240                      vlc_value_t oldval, vlc_value_t newval,
 241                      void * p_userdata )
 242 {
 243     VLC_UNUSED(oldval);
 244     input_thread_t * p_input = (input_thread_t *)p_this;
 245     libvlc_media_player_t * p_mi = p_userdata;
 246     libvlc_event_t event;
 247
 248     assert( !strcmp( psz_cmd, "intf-event" ) );
 249
 250     if( newval.i_int == INPUT_EVENT_STATE )
 251     {
 252         libvlc_state_t libvlc_state;
 253
 254         switch ( var_GetInteger( p_input, "state" ) )
 255         {
 256             case INIT_S:
 257                 libvlc_state = libvlc_NothingSpecial;
 258                 event.type = libvlc_MediaPlayerNothingSpecial;
 259                 break;
 260             case OPENING_S:
 261                 libvlc_state = libvlc_Opening;
 262                 event.type = libvlc_MediaPlayerOpening;
 263                 break;
 264             case PLAYING_S:
 265                 libvlc_state = libvlc_Playing;
 266                 event.type = libvlc_MediaPlayerPlaying;
 267                 break;
 268             case PAUSE_S:
 269                 libvlc_state = libvlc_Paused;
 270                 event.type = libvlc_MediaPlayerPaused;
 271                 break;
 272             case END_S:
 273                 libvlc_state = libvlc_Ended;
 274                 event.type = libvlc_MediaPlayerEndReached;
 275                 break;
 276             case ERROR_S:
 277                 libvlc_state = libvlc_Error;
 278                 event.type = libvlc_MediaPlayerEncounteredError;
 279                 break;
 280
 281             default:
 282                 return VLC_SUCCESS;
 283         }
 284
 285         set_state( p_mi, libvlc_state, false );
 286         libvlc_event_send( p_mi->p_event_manager, &event );
 287     }
 288     else if( newval.i_int == INPUT_EVENT_ABORT )
 289     {
 290         libvlc_state_t libvlc_state = libvlc_Stopped;
 291         event.type = libvlc_MediaPlayerStopped;
 292
 293         set_state( p_mi, libvlc_state, false );
 294         libvlc_event_send( p_mi->p_event_manager, &event );
 295     }
 296     else if( newval.i_int == INPUT_EVENT_POSITION )
 297     {
 298         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 299             return VLC_SUCCESS; /* Don't send the position while stopped */
 300
 301         /* */
 302         event.type = libvlc_MediaPlayerPositionChanged;
 303         event.u.media_player_position_changed.new_position =
 304                                           var_GetFloat( p_input, "position" );
 305         libvlc_event_send( p_mi->p_event_manager, &event );
 306
 307         /* */
 308         event.type = libvlc_MediaPlayerTimeChanged;
 309         event.u.media_player_time_changed.new_time =
 310            from_mtime(var_GetTime( p_input, "time" ));
 311         libvlc_event_send( p_mi->p_event_manager, &event );
 312     }
 313     else if( newval.i_int == INPUT_EVENT_LENGTH )
 314     {
 315         event.type = libvlc_MediaPlayerLengthChanged;
 316         event.u.media_player_length_changed.new_length =
 317            from_mtime(var_GetTime( p_input, "length" ));
 318         libvlc_event_send( p_mi->p_event_manager, &event );
 319     }
 320     else if( newval.i_int == INPUT_EVENT_CACHE )
 321     {
 322         event.type = libvlc_MediaPlayerBuffering;
 323         event.u.media_player_buffering.new_cache = (int)(100 *
 324             var_GetFloat( p_input, "cache" ));
 325         libvlc_event_send( p_mi->p_event_manager, &event );
 326     }
 327     else if( newval.i_int == INPUT_EVENT_VOUT )
 328     {
 329         vout_thread_t **pp_vout;
 330         size_t i_vout;
 331         if( input_Control( p_input, INPUT_GET_VOUTS, &pp_vout, &i_vout ) )
 332         {
 333             i_vout  = 0;
 334         }
 335         else
 336         {
 337             for( size_t i = 0; i < i_vout; i++ )
 338                 vlc_object_release( pp_vout[i] );
 339             free( pp_vout );
 340         }
 341
 342         event.type = libvlc_MediaPlayerVout;
 343         event.u.media_player_vout.new_count = i_vout;
 344         libvlc_event_send( p_mi->p_event_manager, &event );
 345     }
 346
 347     return VLC_SUCCESS;
 348 }
 349
 350 /**************************************************************************
 351  * Snapshot Taken Event.
 352  *
 353  * FIXME: This snapshot API interface makes no sense in media_player.
 354  *************************************************************************/
 355 static int snapshot_was_taken(vlc_object_t *p_this, char const *psz_cmd,
 356                               vlc_value_t oldval, vlc_value_t newval, void *p_data )
 357 {
 358     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
 359
 360     libvlc_media_player_t *mp = p_data;
 361     libvlc_event_t event;
 362     event.type = libvlc_MediaPlayerSnapshotTaken;
 363     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string;
 364     libvlc_event_send(mp->p_event_manager, &event);
 365
 366     return VLC_SUCCESS;
 367 }
 368
 369 /* */
 370 static void libvlc_media_player_destroy( libvlc_media_player_t * );
 371
 372
 373 /**************************************************************************
 374  * Create a Media Instance object.
 375  *
 376  * Refcount strategy:
 377  * - All items created by _new start with a refcount set to 1.
 378  * - Accessor _release decrease the refcount by 1, if after that
 379  *   operation the refcount is 0, the object is destroyed.
 380  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 381  *
 382  * Object locking strategy:
 383  * - No lock held while in constructor.
 384  * - When accessing any member variable this lock is held. (XXX who locks?)
 385  * - When attempting to destroy the object the lock is also held.
 386  **************************************************************************/
 387 libvlc_media_player_t *
 388 libvlc_media_player_new( libvlc_instance_t *instance )
 389 {
 390     libvlc_media_player_t * mp;
 391
 392     assert(instance);
 393
 394     mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
 395     if (unlikely(mp == NULL))
 396     {
 397         libvlc_printerr("Not enough memory");
 398         return NULL;
 399     }
 400
 401     /* Input */
 402     var_Create (mp, "rate", VLC_VAR_FLOAT|VLC_VAR_DOINHERIT);
 403
 404     /* Video */
 405     var_Create (mp, "vout", VLC_VAR_STRING|VLC_VAR_DOINHERIT);
 406     var_Create (mp, "window", VLC_VAR_STRING);
 407     var_Create (mp, "vmem-lock", VLC_VAR_ADDRESS);
 408     var_Create (mp, "vmem-unlock", VLC_VAR_ADDRESS);
 409     var_Create (mp, "vmem-display", VLC_VAR_ADDRESS);
 410     var_Create (mp, "vmem-data", VLC_VAR_ADDRESS);
 411     var_Create (mp, "vmem-setup", VLC_VAR_ADDRESS);
 412     var_Create (mp, "vmem-cleanup", VLC_VAR_ADDRESS);
 413     var_Create (mp, "vmem-chroma", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 414     var_Create (mp, "vmem-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 415     var_Create (mp, "vmem-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 416     var_Create (mp, "vmem-pitch", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 417     var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
 418 #if defined (_WIN32) || defined (__OS2__)
 419     var_Create (mp, "drawable-hwnd", VLC_VAR_INTEGER);
 420 #endif
 421 #ifdef __APPLE__
 422     var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
 423     var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
 424 #endif
 425
 426     var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
 427     var_SetBool (mp, "keyboard-events", true);
 428     var_Create (mp, "mouse-events", VLC_VAR_BOOL);
 429     var_SetBool (mp, "mouse-events", true);
 430
 431     var_Create (mp, "fullscreen", VLC_VAR_BOOL);
 432     var_Create (mp, "autoscale", VLC_VAR_BOOL);
 433     var_SetBool (mp, "autoscale", true);
 434     var_Create (mp, "scale", VLC_VAR_FLOAT);
 435     var_SetFloat (mp, "scale", 1.);
 436     var_Create (mp, "aspect-ratio", VLC_VAR_STRING);
 437     var_Create (mp, "crop", VLC_VAR_STRING);
 438     var_Create (mp, "deinterlace", VLC_VAR_INTEGER);
 439     var_Create (mp, "deinterlace-mode", VLC_VAR_STRING);
 440
 441     var_Create (mp, "vbi-page", VLC_VAR_INTEGER);
 442
 443     var_Create (mp, "marq-marquee", VLC_VAR_STRING);
 444     var_Create (mp, "marq-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 445     var_Create (mp, "marq-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 446     var_Create (mp, "marq-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 447     var_Create (mp, "marq-refresh", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 448     var_Create (mp, "marq-size", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 449     var_Create (mp, "marq-timeout", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 450     var_Create (mp, "marq-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 451     var_Create (mp, "marq-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 452
 453     var_Create (mp, "logo-file", VLC_VAR_STRING);
 454     var_Create (mp, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 455     var_Create (mp, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 456     var_Create (mp, "logo-delay", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 457     var_Create (mp, "logo-repeat", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 458     var_Create (mp, "logo-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 459     var_Create (mp, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 460
 461     var_Create (mp, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 462     var_Create (mp, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 463     var_Create (mp, "hue", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 464     var_Create (mp, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 465     var_Create (mp, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
 466
 467      /* Audio */
 468     var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 469     var_Create (mp, "mute", VLC_VAR_BOOL);
 470     var_Create (mp, "volume", VLC_VAR_FLOAT);
 471     var_Create (mp, "corks", VLC_VAR_INTEGER);
 472     var_Create (mp, "amem-data", VLC_VAR_ADDRESS);
 473     var_Create (mp, "amem-setup", VLC_VAR_ADDRESS);
 474     var_Create (mp, "amem-cleanup", VLC_VAR_ADDRESS);
 475     var_Create (mp, "amem-play", VLC_VAR_ADDRESS);
 476     var_Create (mp, "amem-pause", VLC_VAR_ADDRESS);
 477     var_Create (mp, "amem-resume", VLC_VAR_ADDRESS);
 478     var_Create (mp, "amem-flush", VLC_VAR_ADDRESS);
 479     var_Create (mp, "amem-drain", VLC_VAR_ADDRESS);
 480     var_Create (mp, "amem-set-volume", VLC_VAR_ADDRESS);
 481     var_Create (mp, "amem-format", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
 482     var_Create (mp, "amem-rate", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 483     var_Create (mp, "amem-channels", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 484
 485     /* Video Title */
 486     var_Create (mp, "video-title-show", VLC_VAR_BOOL);
 487     var_Create (mp, "video-title-position", VLC_VAR_INTEGER);
 488     var_Create (mp, "video-title-timeout", VLC_VAR_INTEGER);
 489
 490     /* Equalizer */
 491     var_Create (mp, "equalizer-preamp", VLC_VAR_FLOAT);
 492     var_Create (mp, "equalizer-vlcfreqs", VLC_VAR_BOOL);
 493     var_Create (mp, "equalizer-bands", VLC_VAR_STRING);
 494
 495     mp->p_md = NULL;
 496     mp->state = libvlc_NothingSpecial;
 497     mp->p_libvlc_instance = instance;
 498     mp->input.p_thread = NULL;
 499     mp->input.p_resource = input_resource_New(VLC_OBJECT(mp));
 500     if (unlikely(mp->input.p_resource == NULL))
 501     {
 502         vlc_object_release(mp);
 503         return NULL;
 504     }
 505     audio_output_t *aout = input_resource_GetAout(mp->input.p_resource);
 506     if( aout != NULL )
 507         input_resource_PutAout(mp->input.p_resource, aout);
 508
 509     vlc_mutex_init (&mp->input.lock);
 510     mp->i_refcount = 1;
 511     mp->p_event_manager = libvlc_event_manager_new(mp, instance);
 512     if (unlikely(mp->p_event_manager == NULL))
 513     {
 514         input_resource_Release(mp->input.p_resource);
 515         vlc_object_release(mp);
 516         return NULL;
 517     }
 518     vlc_mutex_init(&mp->object_lock);
 519
 520     register_event(mp, NothingSpecial);
 521     register_event(mp, Opening);
 522     register_event(mp, Buffering);
 523     register_event(mp, Playing);
 524     register_event(mp, Paused);
 525     register_event(mp, Stopped);
 526     register_event(mp, Forward);
 527     register_event(mp, Backward);
 528     register_event(mp, EndReached);
 529     register_event(mp, EncounteredError);
 530     register_event(mp, SeekableChanged);
 531
 532     register_event(mp, PositionChanged);
 533     register_event(mp, TimeChanged);
 534     register_event(mp, LengthChanged);
 535     register_event(mp, TitleChanged);
 536     register_event(mp, PausableChanged);
 537
 538     register_event(mp, Vout);
 539     register_event(mp, ScrambledChanged);
 540
 541     /* Snapshot initialization */
 542     register_event(mp, SnapshotTaken);
 543
 544     register_event(mp, MediaChanged);
 545
 546     /* Attach a var callback to the global object to provide the glue between
 547      * vout_thread that generates the event and media_player that re-emits it
 548      * with its own event manager
 549      *
 550      * FIXME: It's unclear why we want to put this in public API, and why we
 551      * want to expose it in such a limiting and ugly way.
 552      */
 553     var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
 554
 555     libvlc_retain(instance);
 556     return mp;
 557 }
 558
 559 /**************************************************************************
 560  * Create a Media Instance object with a media descriptor.
 561  **************************************************************************/
 562 libvlc_media_player_t *
 563 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
 564 {
 565     libvlc_media_player_t * p_mi;
 566
 567     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
 568     if( !p_mi )
 569         return NULL;
 570
 571     libvlc_media_retain( p_md );
 572     p_mi->p_md = p_md;
 573
 574     return p_mi;
 575 }
 576
 577 /**************************************************************************
 578  * Destroy a Media Instance object (libvlc internal)
 579  *
 580  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 581  **************************************************************************/
 582 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 583 {
 584     assert( p_mi );
 585
 586     /* Detach Callback from the main libvlc object */
 587     var_DelCallback( p_mi->p_libvlc,
 588                      "snapshot-file", snapshot_was_taken, p_mi );
 589
 590     /* No need for lock_input() because no other threads knows us anymore */
 591     if( p_mi->input.p_thread )
 592         release_input_thread(p_mi, true);
 593     input_resource_Terminate( p_mi->input.p_resource );
 594     input_resource_Release( p_mi->input.p_resource );
 595     vlc_mutex_destroy( &p_mi->input.lock );
 596
 597     libvlc_event_manager_release( p_mi->p_event_manager );
 598     libvlc_media_release( p_mi->p_md );
 599     vlc_mutex_destroy( &p_mi->object_lock );
 600
 601     libvlc_instance_t *instance = p_mi->p_libvlc_instance;
 602     vlc_object_release( p_mi );
 603     libvlc_release(instance);
 604 }
 605
 606 /**************************************************************************
 607  * Release a Media Instance object.
 608  *
 609  * Function does the locking.
 610  **************************************************************************/
 611 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 612 {
 613     bool destroy;
 614
 615     assert( p_mi );
 616     lock(p_mi);
 617     destroy = !--p_mi->i_refcount;
 618     unlock(p_mi);
 619
 620     if( destroy )
 621         libvlc_media_player_destroy( p_mi );
 622 }
 623
 624 /**************************************************************************
 625  * Retain a Media Instance object.
 626  *
 627  * Caller must hold the lock.
 628  **************************************************************************/
 629 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 630 {
 631     assert( p_mi );
 632
 633     lock(p_mi);
 634     p_mi->i_refcount++;
 635     unlock(p_mi);
 636 }
 637
 638 /**************************************************************************
 639  * Set the Media descriptor associated with the instance.
 640  *
 641  * Enter without lock -- function will lock the object.
 642  **************************************************************************/
 643 void libvlc_media_player_set_media(
 644                             libvlc_media_player_t *p_mi,
 645                             libvlc_media_t *p_md )
 646 {
 647     lock_input(p_mi);
 648
 649     /* FIXME I am not sure if it is a user request or on die(eof/error)
 650      * request here */
 651     release_input_thread( p_mi,
 652                           p_mi->input.p_thread &&
 653                           !p_mi->input.p_thread->b_eof &&
 654                           !p_mi->input.p_thread->b_error );
 655
 656     lock( p_mi );
 657     set_state( p_mi, libvlc_NothingSpecial, true );
 658     unlock_input( p_mi );
 659
 660     libvlc_media_release( p_mi->p_md );
 661
 662     if( !p_md )
 663     {
 664         p_mi->p_md = NULL;
 665         unlock(p_mi);
 666         return; /* It is ok to pass a NULL md */
 667     }
 668
 669     libvlc_media_retain( p_md );
 670     p_mi->p_md = p_md;
 671
 672     /* The policy here is to ignore that we were created using a different
 673      * libvlc_instance, because we don't really care */
 674     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 675
 676     unlock(p_mi);
 677
 678     /* Send an event for the newly available media */
 679     libvlc_event_t event;
 680     event.type = libvlc_MediaPlayerMediaChanged;
 681     event.u.media_player_media_changed.new_media = p_md;
 682     libvlc_event_send( p_mi->p_event_manager, &event );
 683
 684 }
 685
 686 /**************************************************************************
 687  * Get the Media descriptor associated with the instance.
 688  **************************************************************************/
 689 libvlc_media_t *
 690 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
 691 {
 692     libvlc_media_t *p_m;
 693
 694     lock( p_mi );
 695     p_m = p_mi->p_md;
 696     if( p_m )
 697         libvlc_media_retain( p_m );
 698     unlock( p_mi );
 699
 700     return p_m;
 701 }
 702
 703 /**************************************************************************
 704  * Get the event Manager.
 705  **************************************************************************/
 706 libvlc_event_manager_t *
 707 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
 708 {
 709     return p_mi->p_event_manager;
 710 }
 711
 712 /**************************************************************************
 713  * Tell media player to start playing.
 714  **************************************************************************/
 715 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
 716 {
 717     lock_input( p_mi );
 718
 719     input_thread_t *p_input_thread = p_mi->input.p_thread;
 720     if( p_input_thread )
 721     {
 722         /* A thread already exists, send it a play message */
 723         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 724         unlock_input( p_mi );
 725         return 0;
 726     }
 727
 728     /* Ignore previous exception */
 729     lock(p_mi);
 730
 731     if( !p_mi->p_md )
 732     {
 733         unlock(p_mi);
 734         unlock_input( p_mi );
 735         libvlc_printerr( "No associated media descriptor" );
 736         return -1;
 737     }
 738
 739     p_input_thread = input_Create( p_mi, p_mi->p_md->p_input_item, NULL,
 740                                    p_mi->input.p_resource );
 741     unlock(p_mi);
 742     if( !p_input_thread )
 743     {
 744         unlock_input(p_mi);
 745         libvlc_printerr( "Not enough memory" );
 746         return -1;
 747     }
 748
 749     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 750     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 751     var_AddCallback( p_input_thread, "program-scrambled", input_scrambled_changed, p_mi );
 752     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 753
 754     if( input_Start( p_input_thread ) )
 755     {
 756         unlock_input(p_mi);
 757         var_DelCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 758         var_DelCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 759         var_DelCallback( p_input_thread, "program-scrambled", input_scrambled_changed, p_mi );
 760         var_DelCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 761         vlc_object_release( p_input_thread );
 762         libvlc_printerr( "Input initialization failure" );
 763         return -1;
 764     }
 765     p_mi->input.p_thread = p_input_thread;
 766     unlock_input(p_mi);
 767     return 0;
 768 }
 769
 770 void libvlc_media_player_set_pause( libvlc_media_player_t *p_mi, int paused )
 771 {
 772     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
 773     if( !p_input_thread )
 774         return;
 775
 776     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 777     if( state == libvlc_Playing || state == libvlc_Buffering )
 778     {
 779         if( paused )
 780         {
 781             if( libvlc_media_player_can_pause( p_mi ) )
 782                 input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 783             else
 784                 libvlc_media_player_stop( p_mi );
 785         }
 786     }
 787     else
 788     {
 789         if( !paused )
 790             input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 791     }
 792
 793     vlc_object_release( p_input_thread );
 794 }
 795
 796 /**************************************************************************
 797  * Toggle pause.
 798  **************************************************************************/
 799 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
 800 {
 801     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 802     bool playing = (state == libvlc_Playing || state == libvlc_Buffering);
 803
 804     libvlc_media_player_set_pause( p_mi, playing );
 805 }
 806
 807 /**************************************************************************
 808  * Tells whether the media player is currently playing.
 809  *
 810  * Enter with lock held.
 811  **************************************************************************/
 812 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
 813 {
 814     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 815     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 816 }
 817
 818 /**************************************************************************
 819  * Stop playing.
 820  **************************************************************************/
 821 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
 822 {
 823     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 824
 825     lock_input(p_mi);
 826     release_input_thread( p_mi, true ); /* This will stop the input thread */
 827
 828     /* Force to go to stopped state, in case we were in Ended, or Error
 829      * state. */
 830     if( state != libvlc_Stopped )
 831     {
 832         set_state( p_mi, libvlc_Stopped, false );
 833
 834         /* Construct and send the event */
 835         libvlc_event_t event;
 836         event.type = libvlc_MediaPlayerStopped;
 837         libvlc_event_send( p_mi->p_event_manager, &event );
 838     }
 839
 840     input_resource_Terminate( p_mi->input.p_resource );
 841     unlock_input(p_mi);
 842 }
 843
 844
 845 void libvlc_video_set_callbacks( libvlc_media_player_t *mp,
 846     void *(*lock_cb) (void *, void **),
 847     void (*unlock_cb) (void *, void *, void *const *),
 848     void (*display_cb) (void *, void *),
 849     void *opaque )
 850 {
 851     var_SetAddress( mp, "vmem-lock", lock_cb );
 852     var_SetAddress( mp, "vmem-unlock", unlock_cb );
 853     var_SetAddress( mp, "vmem-display", display_cb );
 854     var_SetAddress( mp, "vmem-data", opaque );
 855     var_SetString( mp, "vout", "vmem" );
 856 }
 857
 858 void libvlc_video_set_format_callbacks( libvlc_media_player_t *mp,
 859                                         libvlc_video_format_cb setup,
 860                                         libvlc_video_cleanup_cb cleanup )
 861 {
 862     var_SetAddress( mp, "vmem-setup", setup );
 863     var_SetAddress( mp, "vmem-cleanup", cleanup );
 864 }
 865
 866 void libvlc_video_set_format( libvlc_media_player_t *mp, const char *chroma,
 867                               unsigned width, unsigned height, unsigned pitch )
 868 {
 869     var_SetString( mp, "vmem-chroma", chroma );
 870     var_SetInteger( mp, "vmem-width", width );
 871     var_SetInteger( mp, "vmem-height", height );
 872     var_SetInteger( mp, "vmem-pitch", pitch );
 873 }
 874
 875 /**************************************************************************
 876  * set_nsobject
 877  **************************************************************************/
 878 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 879                                         void * drawable )
 880 {
 881     assert (p_mi != NULL);
 882 #ifdef __APPLE__
 883     var_SetAddress (p_mi, "drawable-nsobject", drawable);
 884 #else
 885     (void) p_mi; (void)drawable;
 886 #endif
 887 }
 888
 889 /**************************************************************************
 890  * get_nsobject
 891  **************************************************************************/
 892 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 893 {
 894     assert (p_mi != NULL);
 895 #ifdef __APPLE__
 896     return var_GetAddress (p_mi, "drawable-nsobject");
 897 #else
 898     return NULL;
 899 #endif
 900 }
 901
 902 /**************************************************************************
 903  * set_agl
 904  **************************************************************************/
 905 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 906                                   uint32_t drawable )
 907 {
 908 #ifdef __APPLE__
 909     var_SetInteger (p_mi, "drawable-agl", drawable);
 910 #else
 911     (void) p_mi; (void)drawable;
 912 #endif
 913 }
 914
 915 /**************************************************************************
 916  * get_agl
 917  **************************************************************************/
 918 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 919 {
 920     assert (p_mi != NULL);
 921 #ifdef __APPLE__
 922     return var_GetInteger (p_mi, "drawable-agl");
 923 #else
 924     return 0;
 925 #endif
 926 }
 927
 928 /**************************************************************************
 929  * set_xwindow
 930  **************************************************************************/
 931 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 932                                       uint32_t drawable )
 933 {
 934     assert (p_mi != NULL);
 935
 936     var_SetString (p_mi, "vout", drawable ? "xid" : "any");
 937     var_SetString (p_mi, "window", drawable ? "embed-xid,any" : "any");
 938     var_SetInteger (p_mi, "drawable-xid", drawable);
 939 }
 940
 941 /**************************************************************************
 942  * get_xwindow
 943  **************************************************************************/
 944 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 945 {
 946     return var_GetInteger (p_mi, "drawable-xid");
 947 }
 948
 949 /**************************************************************************
 950  * set_hwnd
 951  **************************************************************************/
 952 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 953                                    void *drawable )
 954 {
 955     assert (p_mi != NULL);
 956 #if defined (_WIN32) || defined (__OS2__)
 957     var_SetString (p_mi, "window",
 958                    (drawable != NULL) ? "embed-hwnd,any" : "");
 959     var_SetInteger (p_mi, "drawable-hwnd", (uintptr_t)drawable);
 960 #else
 961     (void) p_mi; (void) drawable;
 962 #endif
 963 }
 964
 965 /**************************************************************************
 966  * get_hwnd
 967  **************************************************************************/
 968 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 969 {
 970     assert (p_mi != NULL);
 971 #if defined (_WIN32) || defined (__OS2__)
 972     return (void *)(uintptr_t)var_GetInteger (p_mi, "drawable-hwnd");
 973 #else
 974     return NULL;
 975 #endif
 976 }
 977
 978 void libvlc_audio_set_callbacks( libvlc_media_player_t *mp,
 979                                  libvlc_audio_play_cb play_cb,
 980                                  libvlc_audio_pause_cb pause_cb,
 981                                  libvlc_audio_resume_cb resume_cb,
 982                                  libvlc_audio_flush_cb flush_cb,
 983                                  libvlc_audio_drain_cb drain_cb,
 984                                  void *opaque )
 985 {
 986     var_SetAddress( mp, "amem-play", play_cb );
 987     var_SetAddress( mp, "amem-pause", pause_cb );
 988     var_SetAddress( mp, "amem-resume", resume_cb );
 989     var_SetAddress( mp, "amem-flush", flush_cb );
 990     var_SetAddress( mp, "amem-drain", drain_cb );
 991     var_SetAddress( mp, "amem-data", opaque );
 992     var_SetString( mp, "aout", "amem,none" );
 993
 994     input_resource_ResetAout(mp->input.p_resource);
 995 }
 996
 997 void libvlc_audio_set_volume_callback( libvlc_media_player_t *mp,
 998                                        libvlc_audio_set_volume_cb cb )
 999 {
1000     var_SetAddress( mp, "amem-set-volume", cb );
1001
1002     input_resource_ResetAout(mp->input.p_resource);
1003 }
1004
1005 void libvlc_audio_set_format_callbacks( libvlc_media_player_t *mp,
1006                                         libvlc_audio_setup_cb setup,
1007                                         libvlc_audio_cleanup_cb cleanup )
1008 {
1009     var_SetAddress( mp, "amem-setup", setup );
1010     var_SetAddress( mp, "amem-cleanup", cleanup );
1011
1012     input_resource_ResetAout(mp->input.p_resource);
1013 }
1014
1015 void libvlc_audio_set_format( libvlc_media_player_t *mp, const char *format,
1016                               unsigned rate, unsigned channels )
1017 {
1018     var_SetString( mp, "amem-format", format );
1019     var_SetInteger( mp, "amem-rate", rate );
1020     var_SetInteger( mp, "amem-channels", channels );
1021
1022     input_resource_ResetAout(mp->input.p_resource);
1023 }
1024
1025
1026 /**************************************************************************
1027  * Getters for stream information
1028  **************************************************************************/
1029 libvlc_time_t libvlc_media_player_get_length(
1030                              libvlc_media_player_t *p_mi )
1031 {
1032     input_thread_t *p_input_thread;
1033     libvlc_time_t i_time;
1034
1035     p_input_thread = libvlc_get_input_thread ( p_mi );
1036     if( !p_input_thread )
1037         return -1;
1038
1039     i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
1040     vlc_object_release( p_input_thread );
1041
1042     return i_time;
1043 }
1044
1045 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
1046 {
1047     input_thread_t *p_input_thread;
1048     libvlc_time_t i_time;
1049
1050     p_input_thread = libvlc_get_input_thread ( p_mi );
1051     if( !p_input_thread )
1052         return -1;
1053
1054     i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
1055     vlc_object_release( p_input_thread );
1056     return i_time;
1057 }
1058
1059 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
1060                                    libvlc_time_t i_time )
1061 {
1062     input_thread_t *p_input_thread;
1063
1064     p_input_thread = libvlc_get_input_thread ( p_mi );
1065     if( !p_input_thread )
1066         return;
1067
1068     var_SetTime( p_input_thread, "time", to_mtime(i_time) );
1069     vlc_object_release( p_input_thread );
1070 }
1071
1072 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
1073                                        float position )
1074 {
1075     input_thread_t *p_input_thread;
1076
1077     p_input_thread = libvlc_get_input_thread ( p_mi );
1078     if( !p_input_thread )
1079         return;
1080
1081     var_SetFloat( p_input_thread, "position", position );
1082     vlc_object_release( p_input_thread );
1083 }
1084
1085 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
1086 {
1087     input_thread_t *p_input_thread;
1088     float f_position;
1089
1090     p_input_thread = libvlc_get_input_thread ( p_mi );
1091     if( !p_input_thread )
1092         return -1.0;
1093
1094     f_position = var_GetFloat( p_input_thread, "position" );
1095     vlc_object_release( p_input_thread );
1096
1097     return f_position;
1098 }
1099
1100 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
1101                                       int chapter )
1102 {
1103     input_thread_t *p_input_thread;
1104
1105     p_input_thread = libvlc_get_input_thread ( p_mi );
1106     if( !p_input_thread )
1107         return;
1108
1109     var_SetInteger( p_input_thread, "chapter", chapter );
1110     vlc_object_release( p_input_thread );
1111 }
1112
1113 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
1114 {
1115     input_thread_t *p_input_thread;
1116     int i_chapter;
1117
1118     p_input_thread = libvlc_get_input_thread ( p_mi );
1119     if( !p_input_thread )
1120         return -1;
1121
1122     i_chapter = var_GetInteger( p_input_thread, "chapter" );
1123     vlc_object_release( p_input_thread );
1124
1125     return i_chapter;
1126 }
1127
1128 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
1129 {
1130     input_thread_t *p_input_thread;
1131     vlc_value_t val;
1132
1133     p_input_thread = libvlc_get_input_thread ( p_mi );
1134     if( !p_input_thread )
1135         return -1;
1136
1137     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
1138     vlc_object_release( p_input_thread );
1139
1140     return val.i_int;
1141 }
1142
1143 int libvlc_media_player_get_chapter_count_for_title(
1144                                  libvlc_media_player_t *p_mi,
1145                                  int i_title )
1146 {
1147     input_thread_t *p_input_thread;
1148     vlc_value_t val;
1149
1150     p_input_thread = libvlc_get_input_thread ( p_mi );
1151     if( !p_input_thread )
1152         return -1;
1153
1154     char *psz_name;
1155     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
1156     {
1157         vlc_object_release( p_input_thread );
1158         return -1;
1159     }
1160     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
1161     vlc_object_release( p_input_thread );
1162     free( psz_name );
1163
1164     return val.i_int;
1165 }
1166
1167 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
1168                                     int i_title )
1169 {
1170     input_thread_t *p_input_thread;
1171
1172     p_input_thread = libvlc_get_input_thread ( p_mi );
1173     if( !p_input_thread )
1174         return;
1175
1176     var_SetInteger( p_input_thread, "title", i_title );
1177     vlc_object_release( p_input_thread );
1178
1179     //send event
1180     libvlc_event_t event;
1181     event.type = libvlc_MediaPlayerTitleChanged;
1182     event.u.media_player_title_changed.new_title = i_title;
1183     libvlc_event_send( p_mi->p_event_manager, &event );
1184 }
1185
1186 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
1187 {
1188     input_thread_t *p_input_thread;
1189     int i_title;
1190
1191     p_input_thread = libvlc_get_input_thread ( p_mi );
1192     if( !p_input_thread )
1193         return -1;
1194
1195     i_title = var_GetInteger( p_input_thread, "title" );
1196     vlc_object_release( p_input_thread );
1197
1198     return i_title;
1199 }
1200
1201 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
1202 {
1203     input_thread_t *p_input_thread;
1204     vlc_value_t val;
1205
1206     p_input_thread = libvlc_get_input_thread ( p_mi );
1207     if( !p_input_thread )
1208         return -1;
1209
1210     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1211     vlc_object_release( p_input_thread );
1212
1213     return val.i_int;
1214 }
1215
1216 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
1217 {
1218     input_thread_t *p_input_thread;
1219
1220     p_input_thread = libvlc_get_input_thread ( p_mi );
1221     if( !p_input_thread )
1222         return;
1223
1224     int i_type = var_Type( p_input_thread, "next-chapter" );
1225     var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1226                             "next-chapter":"next-title" );
1227
1228     vlc_object_release( p_input_thread );
1229 }
1230
1231 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
1232 {
1233     input_thread_t *p_input_thread;
1234
1235     p_input_thread = libvlc_get_input_thread ( p_mi );
1236     if( !p_input_thread )
1237         return;
1238
1239     int i_type = var_Type( p_input_thread, "next-chapter" );
1240     var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1241                             "prev-chapter":"prev-title" );
1242
1243     vlc_object_release( p_input_thread );
1244 }
1245
1246 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
1247 {
1248     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1249     double f_fps = 0.0;
1250
1251     if( p_input_thread )
1252     {
1253         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1254             f_fps = 0.0;
1255         vlc_object_release( p_input_thread );
1256     }
1257     return f_fps;
1258 }
1259
1260 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1261 {
1262     bool b_will_play;
1263     input_thread_t *p_input_thread =
1264                             libvlc_get_input_thread ( p_mi );
1265     if ( !p_input_thread )
1266         return false;
1267
1268     b_will_play = !p_input_thread->b_dead;
1269     vlc_object_release( p_input_thread );
1270
1271     return b_will_play;
1272 }
1273
1274 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1275 {
1276     var_SetFloat (p_mi, "rate", rate);
1277
1278     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1279     if( !p_input_thread )
1280         return 0;
1281     var_SetFloat( p_input_thread, "rate", rate );
1282     vlc_object_release( p_input_thread );
1283     return 0;
1284 }
1285
1286 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1287 {
1288     return var_GetFloat (p_mi, "rate");
1289 }
1290
1291 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1292 {
1293     lock(p_mi);
1294     libvlc_state_t state = p_mi->state;
1295     unlock(p_mi);
1296     return state;
1297 }
1298
1299 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1300 {
1301     input_thread_t *p_input_thread;
1302     bool b_seekable;
1303
1304     p_input_thread = libvlc_get_input_thread ( p_mi );
1305     if ( !p_input_thread )
1306         return false;
1307     b_seekable = var_GetBool( p_input_thread, "can-seek" );
1308     vlc_object_release( p_input_thread );
1309
1310     return b_seekable;
1311 }
1312
1313 void libvlc_media_player_navigate( libvlc_media_player_t* p_mi,
1314                                    unsigned navigate )
1315 {
1316     static const vlc_action_t map[] =
1317     {
1318         INPUT_NAV_ACTIVATE, INPUT_NAV_UP, INPUT_NAV_DOWN,
1319         INPUT_NAV_LEFT, INPUT_NAV_RIGHT,
1320     };
1321
1322     if( navigate >= sizeof(map) / sizeof(map[0]) )
1323       return;
1324
1325     input_thread_t *p_input = libvlc_get_input_thread ( p_mi );
1326     if ( p_input == NULL )
1327       return;
1328
1329     input_Control( p_input, map[navigate], NULL );
1330     vlc_object_release( p_input );
1331 }
1332
1333 /* internal function, used by audio, video */
1334 libvlc_track_description_t *
1335         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1336                                       const char *psz_variable )
1337 {
1338     input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1339     libvlc_track_description_t *p_track_description = NULL,
1340                                *p_actual, *p_previous;
1341
1342     if( !p_input )
1343         return NULL;
1344
1345     vlc_value_t val_list, text_list;
1346     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1347
1348     /* no tracks */
1349     if( val_list.p_list->i_count <= 0 )
1350         goto end;
1351
1352     p_track_description = ( libvlc_track_description_t * )
1353         malloc( sizeof( libvlc_track_description_t ) );
1354     if ( !p_track_description )
1355     {
1356         libvlc_printerr( "Not enough memory" );
1357         goto end;
1358     }
1359     p_actual = p_track_description;
1360     p_previous = NULL;
1361     for( int i = 0; i < val_list.p_list->i_count; i++ )
1362     {
1363         if( !p_actual )
1364         {
1365             p_actual = ( libvlc_track_description_t * )
1366                 malloc( sizeof( libvlc_track_description_t ) );
1367             if ( !p_actual )
1368             {
1369                 libvlc_track_description_list_release( p_track_description );
1370                 libvlc_printerr( "Not enough memory" );
1371                 goto end;
1372             }
1373         }
1374         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1375         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1376         p_actual->p_next = NULL;
1377         if( p_previous )
1378             p_previous->p_next = p_actual;
1379         p_previous = p_actual;
1380         p_actual =  NULL;
1381     }
1382
1383 end:
1384     var_FreeList( &val_list, &text_list );
1385     vlc_object_release( p_input );
1386
1387     return p_track_description;
1388 }
1389
1390 // Deprecated alias for libvlc_track_description_list_release
1391 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1392 {
1393     libvlc_track_description_list_release( p_td );
1394 }
1395
1396 void libvlc_track_description_list_release( libvlc_track_description_t *p_td )
1397 {
1398     libvlc_track_description_t *p_actual, *p_before;
1399     p_actual = p_td;
1400
1401     while ( p_actual )
1402     {
1403         free( p_actual->psz_name );
1404         p_before = p_actual;
1405         p_actual = p_before->p_next;
1406         free( p_before );
1407     }
1408 }
1409
1410 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1411 {
1412     input_thread_t *p_input_thread;
1413     bool b_can_pause;
1414
1415     p_input_thread = libvlc_get_input_thread ( p_mi );
1416     if ( !p_input_thread )
1417         return false;
1418     b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1419     vlc_object_release( p_input_thread );
1420
1421     return b_can_pause;
1422 }
1423
1424 int libvlc_media_player_program_scrambled( libvlc_media_player_t *p_mi )
1425 {
1426     input_thread_t *p_input_thread;
1427     bool b_program_scrambled;
1428
1429     p_input_thread = libvlc_get_input_thread ( p_mi );
1430     if ( !p_input_thread )
1431         return false;
1432     b_program_scrambled = var_GetBool( p_input_thread, "program-scrambled" );
1433     vlc_object_release( p_input_thread );
1434
1435     return b_program_scrambled;
1436 }
1437
1438 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1439 {
1440     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1441     if( p_input_thread != NULL )
1442     {
1443         var_TriggerCallback( p_input_thread, "frame-next" );
1444         vlc_object_release( p_input_thread );
1445     }
1446 }
1447
1448 void libvlc_media_player_set_video_title_display( libvlc_media_player_t *p_mi, libvlc_position_t position, unsigned timeout )
1449 {
1450     if ( position != libvlc_position_disable )
1451     {
1452         var_SetBool( p_mi, "video-title-show", true );
1453         var_SetInteger( p_mi, "video-title-position", position );
1454         var_SetInteger( p_mi, "video-title-timeout", timeout );
1455     }
1456     else
1457     {
1458         var_SetBool( p_mi, "video-title-show", false );
1459     }
1460 }
1461
1462 /**
1463  * Maximum size of a formatted equalizer amplification band frequency value.
1464  *
1465  * The allowed value range is supposed to be constrained from -20.0 to 20.0.
1466  *
1467  * The format string " %.07f" with a minimum value of "-20" gives a maximum
1468  * string length of e.g. " -19.1234567", i.e. 12 bytes (not including the null
1469  * terminator).
1470  */
1471 #define EQZ_BAND_VALUE_SIZE 12
1472
1473 int libvlc_media_player_set_equalizer( libvlc_media_player_t *p_mi, libvlc_equalizer_t *p_equalizer )
1474 {
1475     float f_preamp;
1476     char *psz_bands;
1477
1478     if ( p_equalizer )
1479     {
1480         f_preamp = p_equalizer->f_preamp;
1481
1482         psz_bands = malloc( EQZ_BANDS_MAX * EQZ_BAND_VALUE_SIZE + 1 );
1483         if ( unlikely( psz_bands == NULL ) )
1484             return -1;
1485
1486         char *p = psz_bands;
1487         int c;
1488         for ( int i = 0; i < EQZ_BANDS_MAX; i++ )
1489         {
1490             c = snprintf( p, EQZ_BAND_VALUE_SIZE + 1, " %.07f", p_equalizer->f_amp[i] );
1491             if ( unlikely( c >= EQZ_BAND_VALUE_SIZE + 1 ) )
1492             {
1493                 free( psz_bands );
1494                 return -1;
1495             }
1496
1497             p += c;
1498         }
1499     }
1500     else
1501     {
1502         f_preamp = 0.f;
1503         psz_bands = NULL;
1504     }
1505
1506     var_SetFloat( p_mi, "equalizer-preamp", f_preamp );
1507     var_SetString( p_mi, "equalizer-bands", psz_bands );
1508
1509     audio_output_t *p_aout = input_resource_HoldAout( p_mi->input.p_resource );
1510     if ( p_aout )
1511     {
1512         var_SetFloat( p_aout, "equalizer-preamp", f_preamp );
1513         var_SetString( p_aout, "equalizer-bands", psz_bands );
1514
1515         vlc_object_release( p_aout );
1516     }
1517
1518     free( psz_bands );
1519     return 0;
1520 }