git.sesse.net Git - vlc/blob - src/control/media_player.c

   1 /*****************************************************************************
   2  * media_player.c: Libvlc API Media Instance management functions
   3  *****************************************************************************
   4  * Copyright (C) 2005-2009 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <assert.h>
  29
  30 #include <vlc/libvlc.h>
  31 #include <vlc/libvlc_media.h>
  32 #include <vlc/libvlc_events.h>
  33
  34 #include <vlc_demux.h>
  35 #include <vlc_input.h>
  36 #include <vlc_vout.h>
  37
  38 #include "libvlc.h"
  39
  40 #include "libvlc_internal.h"
  41 #include "media_internal.h" // libvlc_media_set_state()
  42 #include "media_player_internal.h"
  43
  44 static int
  45 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
  46                         vlc_value_t oldval, vlc_value_t newval,
  47                         void * p_userdata );
  48 static int
  49 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
  50                         vlc_value_t oldval, vlc_value_t newval,
  51                         void * p_userdata );
  52 static int
  53 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
  54                      vlc_value_t oldval, vlc_value_t newval,
  55                      void * p_userdata );
  56
  57 static int
  58 snapshot_was_taken( vlc_object_t *p_this, char const *psz_cmd,
  59                     vlc_value_t oldval, vlc_value_t newval, void *p_data );
  60
  61 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi );
  62
  63 /*
  64  * Shortcuts
  65  */
  66
  67 #define register_event(a, b) __register_event(a, libvlc_MediaPlayer ## b)
  68 static inline void __register_event(libvlc_media_player_t *mp, libvlc_event_type_t type)
  69 {
  70     libvlc_event_manager_register_event_type(mp->p_event_manager, type);
  71 }
  72
  73 static inline void lock(libvlc_media_player_t *mp)
  74 {
  75     vlc_mutex_lock(&mp->object_lock);
  76 }
  77
  78 static inline void unlock(libvlc_media_player_t *mp)
  79 {
  80     vlc_mutex_unlock(&mp->object_lock);
  81 }
  82
  83 /*
  84  * Release the associated input thread.
  85  *
  86  * Object lock is NOT held.
  87  */
  88 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
  89 {
  90     input_thread_t * p_input_thread;
  91
  92     if( !p_mi || !p_mi->p_input_thread )
  93         return;
  94
  95     p_input_thread = p_mi->p_input_thread;
  96
  97     var_DelCallback( p_input_thread, "can-seek",
  98                      input_seekable_changed, p_mi );
  99     var_DelCallback( p_input_thread, "can-pause",
 100                     input_pausable_changed, p_mi );
 101     var_DelCallback( p_input_thread, "intf-event",
 102                      input_event_changed, p_mi );
 103
 104     /* We owned this one */
 105     input_Stop( p_input_thread, b_input_abort );
 106
 107     vlc_thread_join( p_input_thread );
 108
 109     assert( p_mi->p_input_resource == NULL );
 110     assert( p_input_thread->b_dead );
 111     /* Store the input resource for future use. */
 112     p_mi->p_input_resource = input_DetachResource( p_input_thread );
 113
 114     vlc_object_release( p_input_thread );
 115
 116     p_mi->p_input_thread = NULL;
 117 }
 118
 119 /*
 120  * Retrieve the input thread. Be sure to release the object
 121  * once you are done with it. (libvlc Internal)
 122  *
 123  * Function will lock the object.
 124  */
 125 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi,
 126                                          libvlc_exception_t *p_e )
 127 {
 128     input_thread_t *p_input_thread;
 129
 130     if( !p_mi ) RAISENULL( "Media Instance is NULL" );
 131
 132     lock(p_mi);
 133
 134     if( !p_mi->p_input_thread )
 135     {
 136         unlock(p_mi);
 137         RAISENULL( "Input is NULL" );
 138     }
 139
 140     p_input_thread = p_mi->p_input_thread;
 141     vlc_object_hold( p_input_thread );
 142
 143     unlock(p_mi);
 144
 145     return p_input_thread;
 146 }
 147
 148 /*
 149  * Set the internal state of the media_player. (media player Internal)
 150  *
 151  * Function will lock the media_player.
 152  */
 153 static void set_state( libvlc_media_player_t *p_mi, libvlc_state_t state,
 154     bool b_locked )
 155 {
 156     if(!b_locked)
 157         lock(p_mi);
 158     p_mi->state = state;
 159     libvlc_media_t *media = p_mi->p_md;
 160     if (media)
 161         libvlc_media_retain(media);
 162     if(!b_locked)
 163         unlock(p_mi);
 164
 165
 166     if (media) {
 167         // Also set the state of the corresponding media
 168         // This is strictly for convenience.
 169         libvlc_media_set_state(media, state);
 170
 171         libvlc_media_release(media);
 172     }
 173 }
 174
 175 static int
 176 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 177                         vlc_value_t oldval, vlc_value_t newval,
 178                         void * p_userdata )
 179 {
 180     VLC_UNUSED(oldval);
 181     VLC_UNUSED(p_this);
 182     VLC_UNUSED(psz_cmd);
 183     libvlc_media_player_t * p_mi = p_userdata;
 184     libvlc_event_t event;
 185
 186     event.type = libvlc_MediaPlayerSeekableChanged;
 187     event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
 188
 189     libvlc_event_send( p_mi->p_event_manager, &event );
 190     return VLC_SUCCESS;
 191 }
 192
 193 static int
 194 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 195                         vlc_value_t oldval, vlc_value_t newval,
 196                         void * p_userdata )
 197 {
 198     VLC_UNUSED(oldval);
 199     VLC_UNUSED(p_this);
 200     VLC_UNUSED(psz_cmd);
 201     libvlc_media_player_t * p_mi = p_userdata;
 202     libvlc_event_t event;
 203
 204     event.type = libvlc_MediaPlayerPausableChanged;
 205     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 206
 207     libvlc_event_send( p_mi->p_event_manager, &event );
 208     return VLC_SUCCESS;
 209 }
 210
 211 static int
 212 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 213                      vlc_value_t oldval, vlc_value_t newval,
 214                      void * p_userdata )
 215 {
 216     VLC_UNUSED(oldval);
 217     input_thread_t * p_input = (input_thread_t *)p_this;
 218     libvlc_media_player_t * p_mi = p_userdata;
 219     libvlc_event_t event;
 220
 221     assert( !strcmp( psz_cmd, "intf-event" ) );
 222
 223     if( newval.i_int == INPUT_EVENT_STATE )
 224     {
 225         libvlc_state_t libvlc_state;
 226
 227         switch ( var_GetInteger( p_input, "state" ) )
 228         {
 229             case INIT_S:
 230                 libvlc_state = libvlc_NothingSpecial;
 231                 event.type = libvlc_MediaPlayerNothingSpecial;
 232                 break;
 233             case OPENING_S:
 234                 libvlc_state = libvlc_Opening;
 235                 event.type = libvlc_MediaPlayerOpening;
 236                 break;
 237             case PLAYING_S:
 238                 libvlc_state = libvlc_Playing;
 239                 event.type = libvlc_MediaPlayerPlaying;
 240                 break;
 241             case PAUSE_S:
 242                 libvlc_state = libvlc_Paused;
 243                 event.type = libvlc_MediaPlayerPaused;
 244                 break;
 245             case END_S:
 246                 libvlc_state = libvlc_Ended;
 247                 event.type = libvlc_MediaPlayerEndReached;
 248                 break;
 249             case ERROR_S:
 250                 libvlc_state = libvlc_Error;
 251                 event.type = libvlc_MediaPlayerEncounteredError;
 252                 break;
 253
 254             default:
 255                 return VLC_SUCCESS;
 256         }
 257
 258         set_state( p_mi, libvlc_state, false );
 259         libvlc_event_send( p_mi->p_event_manager, &event );
 260     }
 261     else if( newval.i_int == INPUT_EVENT_ABORT )
 262     {
 263         libvlc_state_t libvlc_state = libvlc_Stopped;
 264         event.type = libvlc_MediaPlayerStopped;
 265
 266         set_state( p_mi, libvlc_state, false );
 267         libvlc_event_send( p_mi->p_event_manager, &event );
 268     }
 269     else if( newval.i_int == INPUT_EVENT_POSITION )
 270     {
 271         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 272             return VLC_SUCCESS; /* Don't send the position while stopped */
 273
 274         /* */
 275         event.type = libvlc_MediaPlayerPositionChanged;
 276         event.u.media_player_position_changed.new_position =
 277                                           var_GetFloat( p_input, "position" );
 278         libvlc_event_send( p_mi->p_event_manager, &event );
 279
 280         /* */
 281         event.type = libvlc_MediaPlayerTimeChanged;
 282         event.u.media_player_time_changed.new_time =
 283            from_mtime(var_GetTime( p_input, "time" ));
 284         libvlc_event_send( p_mi->p_event_manager, &event );
 285     }
 286     else if( newval.i_int == INPUT_EVENT_LENGTH )
 287     {
 288         event.type = libvlc_MediaPlayerLengthChanged;
 289         event.u.media_player_length_changed.new_length =
 290            from_mtime(var_GetTime( p_input, "length" ));
 291         libvlc_event_send( p_mi->p_event_manager, &event );
 292     }
 293
 294     return VLC_SUCCESS;
 295
 296 }
 297
 298 /**************************************************************************
 299  * Snapshot Taken Event.
 300  *
 301  * FIXME: This snapshot API interface makes no sense in media_player.
 302  *************************************************************************/
 303 static int snapshot_was_taken(vlc_object_t *p_this, char const *psz_cmd,
 304                               vlc_value_t oldval, vlc_value_t newval, void *p_data )
 305 {
 306     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
 307
 308     libvlc_media_player_t *mp = p_data;
 309     libvlc_event_t event;
 310     event.type = libvlc_MediaPlayerSnapshotTaken;
 311     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string;
 312     libvlc_event_send(mp->p_event_manager, &event);
 313
 314     return VLC_SUCCESS;
 315 }
 316
 317
 318 static void libvlc_media_player_destroy( libvlc_media_player_t * );
 319
 320
 321 /**************************************************************************
 322  * Create a Media Instance object.
 323  *
 324  * Refcount strategy:
 325  * - All items created by _new start with a refcount set to 1.
 326  * - Accessor _release decrease the refcount by 1, if after that
 327  *   operation the refcount is 0, the object is destroyed.
 328  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 329  *
 330  * Object locking strategy:
 331  * - No lock held while in constructor.
 332  * - When accessing any member variable this lock is held. (XXX who locks?)
 333  * - When attempting to destroy the object the lock is also held.
 334  **************************************************************************/
 335 libvlc_media_player_t *
 336 libvlc_media_player_new( libvlc_instance_t *instance )
 337 {
 338     libvlc_media_player_t * mp;
 339
 340     assert(instance);
 341
 342     mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
 343     if (unlikely(mp == NULL))
 344     {
 345         libvlc_printerr("Not enough memory");
 346         return NULL;
 347     }
 348     vlc_object_attach (mp, mp->p_libvlc);
 349
 350     /* Drawable */
 351     var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
 352 #ifdef WIN32
 353     var_Create (mp, "drawable-hwnd", VLC_VAR_ADDRESS);
 354 #endif
 355 #ifdef __APPLE__
 356     var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
 357     var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
 358 #endif
 359
 360     /* Drawable input methods */
 361     var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
 362     var_SetBool (mp, "keyboard-events", true);
 363     var_Create (mp, "mouse-events", VLC_VAR_BOOL);
 364
 365     mp->p_md = NULL;
 366     mp->state = libvlc_NothingSpecial;
 367     mp->p_libvlc_instance = instance;
 368     mp->p_input_thread = NULL;
 369     mp->p_input_resource = NULL;
 370     mp->i_refcount = 1;
 371     mp->p_event_manager = libvlc_event_manager_new(mp, instance);
 372     if (unlikely(mp->p_event_manager == NULL))
 373     {
 374         vlc_object_release(mp);
 375         return NULL;
 376     }
 377     vlc_mutex_init(&mp->object_lock);
 378
 379     register_event(mp, NothingSpecial);
 380     register_event(mp, Opening);
 381     register_event(mp, Buffering);
 382     register_event(mp, Playing);
 383     register_event(mp, Paused);
 384     register_event(mp, Stopped);
 385     register_event(mp, Forward);
 386     register_event(mp, Backward);
 387     register_event(mp, EndReached);
 388     register_event(mp, EncounteredError);
 389     register_event(mp, SeekableChanged);
 390
 391     register_event(mp, PositionChanged);
 392     register_event(mp, TimeChanged);
 393     register_event(mp, LengthChanged);
 394     register_event(mp, TitleChanged);
 395     register_event(mp, PausableChanged);
 396
 397     /* Snapshot initialization */
 398     register_event(mp, SnapshotTaken);
 399
 400     register_event(mp, MediaChanged);
 401
 402     /* Attach a var callback to the global object to provide the glue between
 403      * vout_thread that generates the event and media_player that re-emits it
 404      * with its own event manager
 405      *
 406      * FIXME: It's unclear why we want to put this in public API, and why we
 407      * want to expose it in such a limiting and ugly way.
 408      */
 409     var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
 410
 411     return mp;
 412 }
 413
 414 /**************************************************************************
 415  * Create a Media Instance object with a media descriptor.
 416  **************************************************************************/
 417 libvlc_media_player_t *
 418 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
 419 {
 420     libvlc_media_player_t * p_mi;
 421
 422     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
 423     if( !p_mi )
 424         return NULL;
 425
 426     libvlc_media_retain( p_md );
 427     p_mi->p_md = p_md;
 428
 429     return p_mi;
 430 }
 431
 432 /**************************************************************************
 433  * Destroy a Media Instance object (libvlc internal)
 434  *
 435  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 436  **************************************************************************/
 437 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 438 {
 439     assert( p_mi );
 440
 441     /* Detach Callback from the main libvlc object */
 442     var_DelCallback( p_mi->p_libvlc,
 443                      "snapshot-file", snapshot_was_taken, p_mi );
 444
 445     /* If the input thread hasn't been already deleted it means
 446      * that the owners didn't stop the thread before releasing it. */
 447     assert(!p_mi->p_input_thread);
 448
 449     /* Fallback for those who don't use NDEBUG */
 450     if (p_mi->p_input_thread)
 451         release_input_thread(p_mi, true);
 452
 453     if( p_mi->p_input_resource )
 454     {
 455         input_resource_Delete( p_mi->p_input_resource );
 456         p_mi->p_input_resource = NULL;
 457     }
 458
 459     libvlc_event_manager_release( p_mi->p_event_manager );
 460     libvlc_media_release( p_mi->p_md );
 461     vlc_mutex_destroy( &p_mi->object_lock );
 462     vlc_object_release( p_mi );
 463 }
 464
 465 /**************************************************************************
 466  * Release a Media Instance object.
 467  *
 468  * Function does the locking.
 469  **************************************************************************/
 470 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 471 {
 472     bool destroy;
 473
 474     assert( p_mi );
 475     lock(p_mi);
 476     destroy = !--p_mi->i_refcount;
 477     unlock(p_mi);
 478
 479     if( destroy )
 480         libvlc_media_player_destroy( p_mi );
 481 }
 482
 483 /**************************************************************************
 484  * Retain a Media Instance object.
 485  *
 486  * Caller must hold the lock.
 487  **************************************************************************/
 488 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 489 {
 490     assert( p_mi );
 491
 492     lock(p_mi);
 493     p_mi->i_refcount++;
 494     unlock(p_mi);
 495 }
 496
 497 /**************************************************************************
 498  * Set the Media descriptor associated with the instance.
 499  *
 500  * Enter without lock -- function will lock the object.
 501  **************************************************************************/
 502 void libvlc_media_player_set_media(
 503                             libvlc_media_player_t *p_mi,
 504                             libvlc_media_t *p_md )
 505 {
 506     lock(p_mi);
 507
 508     /* FIXME I am not sure if it is a user request or on die(eof/error)
 509      * request here */
 510     release_input_thread( p_mi,
 511                           p_mi->p_input_thread &&
 512                           !p_mi->p_input_thread->b_eof &&
 513                           !p_mi->p_input_thread->b_error );
 514
 515     set_state( p_mi, libvlc_NothingSpecial, true );
 516
 517     libvlc_media_release( p_mi->p_md );
 518
 519     if( !p_md )
 520     {
 521         p_mi->p_md = NULL;
 522         unlock(p_mi);
 523         return; /* It is ok to pass a NULL md */
 524     }
 525
 526     libvlc_media_retain( p_md );
 527     p_mi->p_md = p_md;
 528
 529     /* The policy here is to ignore that we were created using a different
 530      * libvlc_instance, because we don't really care */
 531     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 532
 533     unlock(p_mi);
 534
 535     /* Send an event for the newly available media */
 536     libvlc_event_t event;
 537     event.type = libvlc_MediaPlayerMediaChanged;
 538     event.u.media_player_media_changed.new_media = p_md;
 539     libvlc_event_send( p_mi->p_event_manager, &event );
 540
 541 }
 542
 543 /**************************************************************************
 544  * Get the Media descriptor associated with the instance.
 545  **************************************************************************/
 546 libvlc_media_t *
 547 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
 548 {
 549     libvlc_media_t *p_m;
 550
 551     lock(p_mi);
 552     p_m = p_mi->p_md;
 553     if( p_m )
 554         libvlc_media_retain( p_mi->p_md );
 555     unlock(p_mi);
 556     return p_mi->p_md;
 557 }
 558
 559 /**************************************************************************
 560  * Get the event Manager.
 561  **************************************************************************/
 562 libvlc_event_manager_t *
 563 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
 564 {
 565     return p_mi->p_event_manager;
 566 }
 567
 568 /**************************************************************************
 569  * Tell media player to start playing.
 570  **************************************************************************/
 571 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
 572 {
 573     input_thread_t * p_input_thread;
 574
 575     if( (p_input_thread = libvlc_get_input_thread( p_mi, NULL )) )
 576     {
 577         /* A thread already exists, send it a play message */
 578         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 579         vlc_object_release( p_input_thread );
 580         return 0;
 581     }
 582
 583     /* Ignore previous exception */
 584     lock(p_mi);
 585
 586     if( !p_mi->p_md )
 587     {
 588         unlock(p_mi);
 589         libvlc_printerr( "No associated media descriptor" );
 590         return -1;
 591     }
 592
 593     p_mi->p_input_thread = input_Create( p_mi,
 594                                          p_mi->p_md->p_input_item, NULL,
 595                                          p_mi->p_input_resource );
 596     if( !p_mi->p_input_thread )
 597     {
 598         unlock(p_mi);
 599         libvlc_printerr( "Not enough memory" );
 600         return -1;
 601     }
 602
 603     p_mi->p_input_resource = NULL;
 604     p_input_thread = p_mi->p_input_thread;
 605
 606     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 607     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 608     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 609
 610     if( input_Start( p_input_thread ) )
 611     {
 612         vlc_object_release( p_input_thread );
 613         p_mi->p_input_thread = NULL;
 614     }
 615
 616     unlock(p_mi);
 617     return 0;
 618 }
 619
 620 /**************************************************************************
 621  * Pause.
 622  **************************************************************************/
 623 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
 624 {
 625     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, NULL );
 626     if( !p_input_thread )
 627         return;
 628
 629     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 630     if( state == libvlc_Playing || state == libvlc_Buffering )
 631     {
 632         if( libvlc_media_player_can_pause( p_mi ) )
 633             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 634         else
 635             libvlc_media_player_stop( p_mi );
 636     }
 637     else
 638         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 639
 640     vlc_object_release( p_input_thread );
 641 }
 642
 643 /**************************************************************************
 644  * Tells whether the media player is currently playing.
 645  *
 646  * Enter with lock held.
 647  **************************************************************************/
 648 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
 649 {
 650     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 651     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 652 }
 653
 654 /**************************************************************************
 655  * Stop playing.
 656  **************************************************************************/
 657 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
 658 {
 659     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 660
 661     lock(p_mi);
 662     release_input_thread( p_mi, true ); /* This will stop the input thread */
 663     unlock(p_mi);
 664
 665     /* Force to go to stopped state, in case we were in Ended, or Error
 666      * state. */
 667     if( state != libvlc_Stopped )
 668     {
 669         set_state( p_mi, libvlc_Stopped, false );
 670
 671         /* Construct and send the event */
 672         libvlc_event_t event;
 673         event.type = libvlc_MediaPlayerStopped;
 674         libvlc_event_send( p_mi->p_event_manager, &event );
 675     }
 676 }
 677
 678 /**************************************************************************
 679  * set_nsobject
 680  **************************************************************************/
 681 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 682                                         void * drawable )
 683 {
 684     assert (p_mi != NULL);
 685 #ifdef __APPLE__
 686     var_SetAddress (p_mi, "drawable-nsobject", drawable);
 687 #else
 688     (void) p_mi; (void)drawable;
 689 #endif
 690 }
 691
 692 /**************************************************************************
 693  * get_nsobject
 694  **************************************************************************/
 695 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 696 {
 697     assert (p_mi != NULL);
 698 #ifdef __APPLE__
 699     return var_GetAddress (p_mi, "drawable-nsobject");
 700 #else
 701     return NULL;
 702 #endif
 703 }
 704
 705 /**************************************************************************
 706  * set_agl
 707  **************************************************************************/
 708 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 709                                   uint32_t drawable )
 710 {
 711 #ifdef __APPLE__
 712     var_SetInteger (p_mi, "drawable-agl", drawable);
 713 #else
 714     (void) p_mi; (void)drawable;
 715 #endif
 716 }
 717
 718 /**************************************************************************
 719  * get_agl
 720  **************************************************************************/
 721 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 722 {
 723     assert (p_mi != NULL);
 724 #ifdef __APPLE__
 725     return var_GetInteger (p_mi, "drawable-agl");
 726 #else
 727     return 0;
 728 #endif
 729 }
 730
 731 /**************************************************************************
 732  * set_xwindow
 733  **************************************************************************/
 734 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 735                                       uint32_t drawable )
 736 {
 737     assert (p_mi != NULL);
 738     var_SetInteger (p_mi, "drawable-xid", drawable);
 739 }
 740
 741 /**************************************************************************
 742  * get_xwindow
 743  **************************************************************************/
 744 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 745 {
 746     return var_GetInteger (p_mi, "drawable-xid");
 747 }
 748
 749 /**************************************************************************
 750  * set_hwnd
 751  **************************************************************************/
 752 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 753                                    void *drawable )
 754 {
 755     assert (p_mi != NULL);
 756 #ifdef WIN32
 757     var_SetAddress (p_mi, "drawable-hwnd", drawable);
 758 #else
 759     (void) p_mi; (void) drawable;
 760 #endif
 761 }
 762
 763 /**************************************************************************
 764  * get_hwnd
 765  **************************************************************************/
 766 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 767 {
 768     assert (p_mi != NULL);
 769 #ifdef WIN32
 770     return var_GetAddress (p_mi, "drawable-hwnd");
 771 #else
 772     return NULL;
 773 #endif
 774 }
 775
 776 /**************************************************************************
 777  * Getters for stream information
 778  **************************************************************************/
 779 libvlc_time_t libvlc_media_player_get_length(
 780                              libvlc_media_player_t *p_mi )
 781 {
 782     input_thread_t *p_input_thread;
 783     libvlc_time_t i_time;
 784
 785     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 786     if( !p_input_thread )
 787         return -1;
 788
 789     i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
 790     vlc_object_release( p_input_thread );
 791
 792     return i_time;
 793 }
 794
 795 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
 796 {
 797     input_thread_t *p_input_thread;
 798     libvlc_time_t i_time;
 799
 800     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 801     if( !p_input_thread )
 802         return -1;
 803
 804     i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
 805     vlc_object_release( p_input_thread );
 806     return i_time;
 807 }
 808
 809 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
 810                                    libvlc_time_t i_time )
 811 {
 812     input_thread_t *p_input_thread;
 813
 814     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 815     if( !p_input_thread )
 816         return;
 817
 818     var_SetTime( p_input_thread, "time", to_mtime(i_time) );
 819     vlc_object_release( p_input_thread );
 820 }
 821
 822 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
 823                                        float position )
 824 {
 825     input_thread_t *p_input_thread;
 826
 827     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 828     if( !p_input_thread )
 829         return;
 830
 831     var_SetFloat( p_input_thread, "position", position );
 832     vlc_object_release( p_input_thread );
 833 }
 834
 835 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
 836 {
 837     input_thread_t *p_input_thread;
 838     float f_position;
 839
 840     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 841     if( !p_input_thread )
 842         return -1.0;
 843
 844     f_position = var_GetFloat( p_input_thread, "position" );
 845     vlc_object_release( p_input_thread );
 846
 847     return f_position;
 848 }
 849
 850 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
 851                                       int chapter )
 852 {
 853     input_thread_t *p_input_thread;
 854
 855     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 856     if( !p_input_thread )
 857         return;
 858
 859     var_SetInteger( p_input_thread, "chapter", chapter );
 860     vlc_object_release( p_input_thread );
 861 }
 862
 863 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
 864 {
 865     input_thread_t *p_input_thread;
 866     int i_chapter;
 867
 868     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 869     if( !p_input_thread )
 870         return -1;
 871
 872     i_chapter = var_GetInteger( p_input_thread, "chapter" );
 873     vlc_object_release( p_input_thread );
 874
 875     return i_chapter;
 876 }
 877
 878 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
 879 {
 880     input_thread_t *p_input_thread;
 881     vlc_value_t val;
 882
 883     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 884     if( !p_input_thread )
 885         return -1;
 886
 887     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 888     vlc_object_release( p_input_thread );
 889
 890     return val.i_int;
 891 }
 892
 893 int libvlc_media_player_get_chapter_count_for_title(
 894                                  libvlc_media_player_t *p_mi,
 895                                  int i_title )
 896 {
 897     input_thread_t *p_input_thread;
 898     vlc_value_t val;
 899
 900     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 901     if( !p_input_thread )
 902         return -1;
 903
 904     char *psz_name;
 905     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 906     {
 907         vlc_object_release( p_input_thread );
 908         return -1;
 909     }
 910     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 911     vlc_object_release( p_input_thread );
 912     free( psz_name );
 913
 914     return val.i_int;
 915 }
 916
 917 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
 918                                     int i_title )
 919 {
 920     input_thread_t *p_input_thread;
 921
 922     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 923     if( !p_input_thread )
 924         return;
 925
 926     var_SetInteger( p_input_thread, "title", i_title );
 927     vlc_object_release( p_input_thread );
 928
 929     //send event
 930     libvlc_event_t event;
 931     event.type = libvlc_MediaPlayerTitleChanged;
 932     event.u.media_player_title_changed.new_title = i_title;
 933     libvlc_event_send( p_mi->p_event_manager, &event );
 934 }
 935
 936 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
 937 {
 938     input_thread_t *p_input_thread;
 939     int i_title;
 940
 941     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 942     if( !p_input_thread )
 943         return -1;
 944
 945     i_title = var_GetInteger( p_input_thread, "title" );
 946     vlc_object_release( p_input_thread );
 947
 948     return i_title;
 949 }
 950
 951 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
 952 {
 953     input_thread_t *p_input_thread;
 954     vlc_value_t val;
 955
 956     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 957     if( !p_input_thread )
 958         return -1;
 959
 960     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
 961     vlc_object_release( p_input_thread );
 962
 963     return val.i_int;
 964 }
 965
 966 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
 967 {
 968     input_thread_t *p_input_thread;
 969
 970     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 971     if( !p_input_thread )
 972         return;
 973
 974     int i_type = var_Type( p_input_thread, "next-chapter" );
 975     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
 976                             "next-chapter":"next-title", true );
 977
 978     vlc_object_release( p_input_thread );
 979 }
 980
 981 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
 982 {
 983     input_thread_t *p_input_thread;
 984
 985     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 986     if( !p_input_thread )
 987         return;
 988
 989     int i_type = var_Type( p_input_thread, "next-chapter" );
 990     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
 991                             "prev-chapter":"prev-title", true );
 992
 993     vlc_object_release( p_input_thread );
 994 }
 995
 996 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
 997 {
 998     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
 999     double f_fps = 0.0;
1000
1001     if( p_input_thread )
1002     {
1003         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1004             f_fps = 0.0;
1005         vlc_object_release( p_input_thread );
1006     }
1007     return f_fps;
1008 }
1009
1010 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1011 {
1012     bool b_will_play;
1013     input_thread_t *p_input_thread =
1014                             libvlc_get_input_thread ( p_mi, NULL );
1015     if ( !p_input_thread )
1016         return false;
1017
1018     b_will_play = !p_input_thread->b_die && !p_input_thread->b_dead;
1019     vlc_object_release( p_input_thread );
1020
1021     return b_will_play;
1022 }
1023
1024 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1025 {
1026     input_thread_t *p_input_thread;
1027     bool b_can_rewind;
1028
1029     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
1030     if( !p_input_thread )
1031         return -1;
1032
1033     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1034     if( (rate < 0.0) && !b_can_rewind )
1035     {
1036         vlc_object_release( p_input_thread );
1037         libvlc_printerr( "Invalid playback rate" );
1038         return -1;
1039     }
1040
1041     var_SetFloat( p_input_thread, "rate", rate );
1042     vlc_object_release( p_input_thread );
1043     return 0;
1044 }
1045
1046 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1047 {
1048     input_thread_t *p_input_thread;
1049     float f_rate;
1050     bool b_can_rewind;
1051
1052     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
1053     if( !p_input_thread )
1054         return 0.0;  /* rate < 0 indicates rewind */
1055
1056     f_rate = var_GetFloat( p_input_thread, "rate" );
1057     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1058     /* FIXME: why are negative values forbidden ?? (rewinding) */
1059     if( f_rate < 0 && !b_can_rewind )
1060     {
1061         vlc_object_release( p_input_thread );
1062         return 0.0;
1063     }
1064     vlc_object_release( p_input_thread );
1065
1066     return f_rate;
1067 }
1068
1069 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1070 {
1071     lock(p_mi);
1072     libvlc_state_t state = p_mi->state;
1073     unlock(p_mi);
1074     return state;
1075 }
1076
1077 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1078 {
1079     input_thread_t *p_input_thread;
1080     bool b_seekable;
1081
1082     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
1083     if ( !p_input_thread )
1084         return false;
1085     b_seekable = var_GetBool( p_input_thread, "can-seek" );
1086     vlc_object_release( p_input_thread );
1087
1088     return b_seekable;
1089 }
1090
1091 /* internal function, used by audio, video */
1092 libvlc_track_description_t *
1093         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1094                                       const char *psz_variable )
1095 {
1096     input_thread_t *p_input = libvlc_get_input_thread( p_mi, NULL );
1097     libvlc_track_description_t *p_track_description = NULL,
1098                                *p_actual, *p_previous;
1099
1100     if( !p_input )
1101         return NULL;
1102
1103     vlc_value_t val_list, text_list;
1104     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1105
1106     /* no tracks */
1107     if( val_list.p_list->i_count <= 0 )
1108         goto end;
1109
1110     p_track_description = ( libvlc_track_description_t * )
1111         malloc( sizeof( libvlc_track_description_t ) );
1112     if ( !p_track_description )
1113     {
1114         libvlc_printerr( "Not enough memory" );
1115         goto end;
1116     }
1117     p_actual = p_track_description;
1118     p_previous = NULL;
1119     for( int i = 0; i < val_list.p_list->i_count; i++ )
1120     {
1121         if( !p_actual )
1122         {
1123             p_actual = ( libvlc_track_description_t * )
1124                 malloc( sizeof( libvlc_track_description_t ) );
1125             if ( !p_actual )
1126             {
1127                 libvlc_track_description_release( p_track_description );
1128                 libvlc_exception_raise( p_e );
1129                 libvlc_printerr( "Not enough memory" );
1130                 goto end;
1131             }
1132         }
1133         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1134         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1135         p_actual->p_next = NULL;
1136         if( p_previous )
1137             p_previous->p_next = p_actual;
1138         p_previous = p_actual;
1139         p_actual =  NULL;
1140     }
1141
1142 end:
1143     var_FreeList( &val_list, &text_list );
1144     vlc_object_release( p_input );
1145
1146     return p_track_description;
1147 }
1148
1149 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1150 {
1151     libvlc_track_description_t *p_actual, *p_before;
1152     p_actual = p_td;
1153
1154     while ( p_actual )
1155     {
1156         free( p_actual->psz_name );
1157         p_before = p_actual;
1158         p_actual = p_before->p_next;
1159         free( p_before );
1160     }
1161 }
1162
1163 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1164 {
1165     input_thread_t *p_input_thread;
1166     bool b_can_pause;
1167
1168     p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
1169     if ( !p_input_thread )
1170         return false;
1171     b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1172     vlc_object_release( p_input_thread );
1173
1174     return b_can_pause;
1175 }
1176
1177 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1178 {
1179     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, NULL );
1180     if( p_input_thread != NULL )
1181     {
1182         var_TriggerCallback( p_input_thread, "frame-next" );
1183         vlc_object_release( p_input_thread );
1184     }
1185 }