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, libvlc_exception_t *e )
 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(
 419                                     libvlc_media_t * p_md,
 420                                     libvlc_exception_t *p_e )
 421 {
 422     libvlc_media_player_t * p_mi;
 423
 424     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance, p_e );
 425     if( !p_mi )
 426         return NULL;
 427
 428     libvlc_media_retain( p_md );
 429     p_mi->p_md = p_md;
 430
 431     return p_mi;
 432 }
 433
 434 /**************************************************************************
 435  * Destroy a Media Instance object (libvlc internal)
 436  *
 437  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 438  **************************************************************************/
 439 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 440 {
 441     assert( p_mi );
 442
 443     /* Detach Callback from the main libvlc object */
 444     var_DelCallback( p_mi->p_libvlc,
 445                      "snapshot-file", snapshot_was_taken, p_mi );
 446
 447     /* If the input thread hasn't been already deleted it means
 448      * that the owners didn't stop the thread before releasing it. */
 449     assert(!p_mi->p_input_thread);
 450
 451     /* Fallback for those who don't use NDEBUG */
 452     if (p_mi->p_input_thread)
 453         release_input_thread(p_mi, true);
 454
 455     if( p_mi->p_input_resource )
 456     {
 457         input_resource_Delete( p_mi->p_input_resource );
 458         p_mi->p_input_resource = NULL;
 459     }
 460
 461     libvlc_event_manager_release( p_mi->p_event_manager );
 462     libvlc_media_release( p_mi->p_md );
 463     vlc_mutex_destroy( &p_mi->object_lock );
 464     vlc_object_release( p_mi );
 465 }
 466
 467 /**************************************************************************
 468  * Release a Media Instance object.
 469  *
 470  * Function does the locking.
 471  **************************************************************************/
 472 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 473 {
 474     bool destroy;
 475
 476     assert( p_mi );
 477     lock(p_mi);
 478     destroy = !--p_mi->i_refcount;
 479     unlock(p_mi);
 480
 481     if( destroy )
 482         libvlc_media_player_destroy( p_mi );
 483 }
 484
 485 /**************************************************************************
 486  * Retain a Media Instance object.
 487  *
 488  * Caller must hold the lock.
 489  **************************************************************************/
 490 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 491 {
 492     assert( p_mi );
 493
 494     lock(p_mi);
 495     p_mi->i_refcount++;
 496     unlock(p_mi);
 497 }
 498
 499 /**************************************************************************
 500  * Set the Media descriptor associated with the instance.
 501  *
 502  * Enter without lock -- function will lock the object.
 503  **************************************************************************/
 504 void libvlc_media_player_set_media(
 505                             libvlc_media_player_t *p_mi,
 506                             libvlc_media_t *p_md )
 507 {
 508     lock(p_mi);
 509
 510     /* FIXME I am not sure if it is a user request or on die(eof/error)
 511      * request here */
 512     release_input_thread( p_mi,
 513                           p_mi->p_input_thread &&
 514                           !p_mi->p_input_thread->b_eof &&
 515                           !p_mi->p_input_thread->b_error );
 516
 517     set_state( p_mi, libvlc_NothingSpecial, true );
 518
 519     libvlc_media_release( p_mi->p_md );
 520
 521     if( !p_md )
 522     {
 523         p_mi->p_md = NULL;
 524         unlock(p_mi);
 525         return; /* It is ok to pass a NULL md */
 526     }
 527
 528     libvlc_media_retain( p_md );
 529     p_mi->p_md = p_md;
 530
 531     /* The policy here is to ignore that we were created using a different
 532      * libvlc_instance, because we don't really care */
 533     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 534
 535     unlock(p_mi);
 536
 537     /* Send an event for the newly available media */
 538     libvlc_event_t event;
 539     event.type = libvlc_MediaPlayerMediaChanged;
 540     event.u.media_player_media_changed.new_media = p_md;
 541     libvlc_event_send( p_mi->p_event_manager, &event );
 542
 543 }
 544
 545 /**************************************************************************
 546  * Get the Media descriptor associated with the instance.
 547  **************************************************************************/
 548 libvlc_media_t *
 549 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
 550 {
 551     libvlc_media_t *p_m;
 552
 553     lock(p_mi);
 554     p_m = p_mi->p_md;
 555     if( p_m )
 556         libvlc_media_retain( p_mi->p_md );
 557     unlock(p_mi);
 558     return p_mi->p_md;
 559 }
 560
 561 /**************************************************************************
 562  * Get the event Manager.
 563  **************************************************************************/
 564 libvlc_event_manager_t *
 565 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
 566 {
 567     return p_mi->p_event_manager;
 568 }
 569
 570 /**************************************************************************
 571  * Tell media player to start playing.
 572  **************************************************************************/
 573 void libvlc_media_player_play( libvlc_media_player_t *p_mi,
 574                                  libvlc_exception_t *p_e )
 575 {
 576     input_thread_t * p_input_thread;
 577
 578     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 579     {
 580         /* A thread already exists, send it a play message */
 581         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 582         vlc_object_release( p_input_thread );
 583         return;
 584     }
 585
 586     /* Ignore previous exception */
 587     libvlc_exception_clear( p_e );
 588
 589     lock(p_mi);
 590
 591     if( !p_mi->p_md )
 592     {
 593         unlock(p_mi);
 594         libvlc_exception_raise( p_e );
 595         libvlc_printerr( "No associated media descriptor" );
 596         return;
 597     }
 598
 599     p_mi->p_input_thread = input_Create( p_mi,
 600                                          p_mi->p_md->p_input_item, NULL,
 601                                          p_mi->p_input_resource );
 602     if( !p_mi->p_input_thread )
 603     {
 604         unlock(p_mi);
 605         return;
 606     }
 607
 608     p_mi->p_input_resource = NULL;
 609     p_input_thread = p_mi->p_input_thread;
 610
 611     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 612     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 613     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 614
 615     if( input_Start( p_input_thread ) )
 616     {
 617         vlc_object_release( p_input_thread );
 618         p_mi->p_input_thread = NULL;
 619     }
 620
 621     unlock(p_mi);
 622 }
 623
 624 /**************************************************************************
 625  * Pause.
 626  **************************************************************************/
 627 void libvlc_media_player_pause( libvlc_media_player_t *p_mi,
 628                                   libvlc_exception_t *p_e )
 629 {
 630     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 631     if( !p_input_thread )
 632         return;
 633
 634     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 635     if( state == libvlc_Playing || state == libvlc_Buffering )
 636     {
 637         if( libvlc_media_player_can_pause( p_mi, p_e ) )
 638             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 639         else
 640             libvlc_media_player_stop( p_mi );
 641     }
 642     else
 643         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 644
 645     vlc_object_release( p_input_thread );
 646 }
 647
 648 /**************************************************************************
 649  * Tells whether the media player is currently playing.
 650  *
 651  * Enter with lock held.
 652  **************************************************************************/
 653 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
 654 {
 655     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 656     return (libvlc_Playing == state) || (libvlc_Buffering == state);
 657 }
 658
 659 /**************************************************************************
 660  * Stop playing.
 661  **************************************************************************/
 662 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
 663 {
 664     libvlc_state_t state = libvlc_media_player_get_state( p_mi );
 665
 666     lock(p_mi);
 667     release_input_thread( p_mi, true ); /* This will stop the input thread */
 668     unlock(p_mi);
 669
 670     /* Force to go to stopped state, in case we were in Ended, or Error
 671      * state. */
 672     if( state != libvlc_Stopped )
 673     {
 674         set_state( p_mi, libvlc_Stopped, false );
 675
 676         /* Construct and send the event */
 677         libvlc_event_t event;
 678         event.type = libvlc_MediaPlayerStopped;
 679         libvlc_event_send( p_mi->p_event_manager, &event );
 680     }
 681 }
 682
 683 /**************************************************************************
 684  * set_nsobject
 685  **************************************************************************/
 686 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
 687                                         void * drawable )
 688 {
 689     assert (p_mi != NULL);
 690 #ifdef __APPLE__
 691     var_SetAddress (p_mi, "drawable-nsobject", drawable);
 692 #else
 693     (void) p_mi; (void)drawable;
 694 #endif
 695 }
 696
 697 /**************************************************************************
 698  * get_nsobject
 699  **************************************************************************/
 700 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
 701 {
 702     assert (p_mi != NULL);
 703 #ifdef __APPLE__
 704     return var_GetAddress (p_mi, "drawable-nsobject");
 705 #else
 706     return NULL;
 707 #endif
 708 }
 709
 710 /**************************************************************************
 711  * set_agl
 712  **************************************************************************/
 713 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 714                                   uint32_t drawable )
 715 {
 716 #ifdef __APPLE__
 717     var_SetInteger (p_mi, "drawable-agl", drawable);
 718 #else
 719     (void) p_mi; (void)drawable;
 720 #endif
 721 }
 722
 723 /**************************************************************************
 724  * get_agl
 725  **************************************************************************/
 726 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 727 {
 728     assert (p_mi != NULL);
 729 #ifdef __APPLE__
 730     return var_GetInteger (p_mi, "drawable-agl");
 731 #else
 732     return 0;
 733 #endif
 734 }
 735
 736 /**************************************************************************
 737  * set_xwindow
 738  **************************************************************************/
 739 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 740                                       uint32_t drawable )
 741 {
 742     assert (p_mi != NULL);
 743     var_SetInteger (p_mi, "drawable-xid", drawable);
 744 }
 745
 746 /**************************************************************************
 747  * get_xwindow
 748  **************************************************************************/
 749 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 750 {
 751     return var_GetInteger (p_mi, "drawable-xid");
 752 }
 753
 754 /**************************************************************************
 755  * set_hwnd
 756  **************************************************************************/
 757 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 758                                    void *drawable )
 759 {
 760     assert (p_mi != NULL);
 761 #ifdef WIN32
 762     var_SetAddress (p_mi, "drawable-hwnd", drawable);
 763 #else
 764     (void) p_mi; (void) drawable;
 765 #endif
 766 }
 767
 768 /**************************************************************************
 769  * get_hwnd
 770  **************************************************************************/
 771 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 772 {
 773     assert (p_mi != NULL);
 774 #ifdef WIN32
 775     return var_GetAddress (p_mi, "drawable-hwnd");
 776 #else
 777     return NULL;
 778 #endif
 779 }
 780
 781 /**************************************************************************
 782  * Getters for stream information
 783  **************************************************************************/
 784 libvlc_time_t libvlc_media_player_get_length(
 785                              libvlc_media_player_t *p_mi,
 786                              libvlc_exception_t *p_e )
 787 {
 788     input_thread_t *p_input_thread;
 789     libvlc_time_t i_time;
 790
 791     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 792     if( !p_input_thread )
 793         return -1;
 794
 795     i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
 796     vlc_object_release( p_input_thread );
 797
 798     return i_time;
 799 }
 800
 801 libvlc_time_t libvlc_media_player_get_time(
 802                                    libvlc_media_player_t *p_mi,
 803                                    libvlc_exception_t *p_e )
 804 {
 805     input_thread_t *p_input_thread;
 806     libvlc_time_t i_time;
 807
 808     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 809     if( !p_input_thread )
 810         return -1;
 811
 812     i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
 813     vlc_object_release( p_input_thread );
 814     return i_time;
 815 }
 816
 817 void libvlc_media_player_set_time(
 818                                  libvlc_media_player_t *p_mi,
 819                                  libvlc_time_t i_time,
 820                                  libvlc_exception_t *p_e )
 821 {
 822     input_thread_t *p_input_thread;
 823
 824     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 825     if( !p_input_thread )
 826         return;
 827
 828     var_SetTime( p_input_thread, "time", to_mtime(i_time) );
 829     vlc_object_release( p_input_thread );
 830 }
 831
 832 void libvlc_media_player_set_position(
 833                                 libvlc_media_player_t *p_mi,
 834                                 float position,
 835                                 libvlc_exception_t *p_e )
 836 {
 837     input_thread_t *p_input_thread;
 838
 839     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 840     if( !p_input_thread )
 841         return;
 842
 843     var_SetFloat( p_input_thread, "position", position );
 844     vlc_object_release( p_input_thread );
 845 }
 846
 847 float libvlc_media_player_get_position(
 848                                  libvlc_media_player_t *p_mi,
 849                                  libvlc_exception_t *p_e )
 850 {
 851     input_thread_t *p_input_thread;
 852     float f_position;
 853
 854     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 855     if( !p_input_thread )
 856         return -1.0;
 857
 858     f_position = var_GetFloat( p_input_thread, "position" );
 859     vlc_object_release( p_input_thread );
 860
 861     return f_position;
 862 }
 863
 864 void libvlc_media_player_set_chapter(
 865                                  libvlc_media_player_t *p_mi,
 866                                  int chapter,
 867                                  libvlc_exception_t *p_e )
 868 {
 869     input_thread_t *p_input_thread;
 870
 871     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 872     if( !p_input_thread )
 873         return;
 874
 875     var_SetInteger( p_input_thread, "chapter", chapter );
 876     vlc_object_release( p_input_thread );
 877 }
 878
 879 int libvlc_media_player_get_chapter(
 880                                  libvlc_media_player_t *p_mi,
 881                                  libvlc_exception_t *p_e )
 882 {
 883     input_thread_t *p_input_thread;
 884     int i_chapter;
 885
 886     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 887     if( !p_input_thread )
 888         return -1;
 889
 890     i_chapter = var_GetInteger( p_input_thread, "chapter" );
 891     vlc_object_release( p_input_thread );
 892
 893     return i_chapter;
 894 }
 895
 896 int libvlc_media_player_get_chapter_count(
 897                                  libvlc_media_player_t *p_mi,
 898                                  libvlc_exception_t *p_e )
 899 {
 900     input_thread_t *p_input_thread;
 901     vlc_value_t val;
 902
 903     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 904     if( !p_input_thread )
 905         return -1;
 906
 907     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 908     vlc_object_release( p_input_thread );
 909
 910     return val.i_int;
 911 }
 912
 913 int libvlc_media_player_get_chapter_count_for_title(
 914                                  libvlc_media_player_t *p_mi,
 915                                  int i_title,
 916                                  libvlc_exception_t *p_e )
 917 {
 918     input_thread_t *p_input_thread;
 919     vlc_value_t val;
 920
 921     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 922     if( !p_input_thread )
 923         return -1;
 924
 925     char *psz_name;
 926     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 927     {
 928         vlc_object_release( p_input_thread );
 929         return -1;
 930     }
 931     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 932     vlc_object_release( p_input_thread );
 933     free( psz_name );
 934
 935     return val.i_int;
 936 }
 937
 938 void libvlc_media_player_set_title(
 939                                  libvlc_media_player_t *p_mi,
 940                                  int i_title,
 941                                  libvlc_exception_t *p_e )
 942 {
 943     input_thread_t *p_input_thread;
 944
 945     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 946     if( !p_input_thread )
 947         return;
 948
 949     var_SetInteger( p_input_thread, "title", i_title );
 950     vlc_object_release( p_input_thread );
 951
 952     //send event
 953     libvlc_event_t event;
 954     event.type = libvlc_MediaPlayerTitleChanged;
 955     event.u.media_player_title_changed.new_title = i_title;
 956     libvlc_event_send( p_mi->p_event_manager, &event );
 957 }
 958
 959 int libvlc_media_player_get_title(
 960                                  libvlc_media_player_t *p_mi,
 961                                  libvlc_exception_t *p_e )
 962 {
 963     input_thread_t *p_input_thread;
 964     int i_title;
 965
 966     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 967     if( !p_input_thread )
 968         return -1;
 969
 970     i_title = var_GetInteger( p_input_thread, "title" );
 971     vlc_object_release( p_input_thread );
 972
 973     return i_title;
 974 }
 975
 976 int libvlc_media_player_get_title_count(
 977                                  libvlc_media_player_t *p_mi,
 978                                  libvlc_exception_t *p_e )
 979 {
 980     input_thread_t *p_input_thread;
 981     vlc_value_t val;
 982
 983     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 984     if( !p_input_thread )
 985         return -1;
 986
 987     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
 988     vlc_object_release( p_input_thread );
 989
 990     return val.i_int;
 991 }
 992
 993 void libvlc_media_player_next_chapter(
 994                                  libvlc_media_player_t *p_mi,
 995                                  libvlc_exception_t *p_e )
 996 {
 997     input_thread_t *p_input_thread;
 998
 999     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1000     if( !p_input_thread )
1001         return;
1002
1003     int i_type = var_Type( p_input_thread, "next-chapter" );
1004     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1005                             "next-chapter":"next-title", true );
1006
1007     vlc_object_release( p_input_thread );
1008 }
1009
1010 void libvlc_media_player_previous_chapter(
1011                                  libvlc_media_player_t *p_mi,
1012                                  libvlc_exception_t *p_e )
1013 {
1014     input_thread_t *p_input_thread;
1015
1016     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1017     if( !p_input_thread )
1018         return;
1019
1020     int i_type = var_Type( p_input_thread, "next-chapter" );
1021     var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1022                             "prev-chapter":"prev-title", true );
1023
1024     vlc_object_release( p_input_thread );
1025 }
1026
1027 float libvlc_media_player_get_fps(
1028                                  libvlc_media_player_t *p_mi,
1029                                  libvlc_exception_t *p_e)
1030 {
1031     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1032     double f_fps = 0.0;
1033
1034     if( p_input_thread )
1035     {
1036         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1037             f_fps = 0.0;
1038         vlc_object_release( p_input_thread );
1039     }
1040     return f_fps;
1041 }
1042
1043 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi,
1044                                      libvlc_exception_t *p_e)
1045 {
1046     bool b_will_play;
1047     input_thread_t *p_input_thread =
1048                             libvlc_get_input_thread ( p_mi, p_e);
1049     if ( !p_input_thread )
1050         return false;
1051
1052     b_will_play = !p_input_thread->b_die && !p_input_thread->b_dead;
1053     vlc_object_release( p_input_thread );
1054
1055     return b_will_play;
1056 }
1057
1058 void libvlc_media_player_set_rate(
1059                                  libvlc_media_player_t *p_mi,
1060                                  float rate,
1061                                  libvlc_exception_t *p_e )
1062 {
1063     input_thread_t *p_input_thread;
1064     bool b_can_rewind;
1065
1066     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1067     if( !p_input_thread )
1068         return;
1069
1070     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1071     if( (rate < 0.0) && !b_can_rewind )
1072     {
1073         vlc_object_release( p_input_thread );
1074         libvlc_exception_raise( p_e );
1075         libvlc_printerr( "Invalid playback rate" );
1076         return;
1077     }
1078
1079     var_SetFloat( p_input_thread, "rate", rate );
1080     vlc_object_release( p_input_thread );
1081 }
1082
1083 float libvlc_media_player_get_rate(
1084                                  libvlc_media_player_t *p_mi,
1085                                  libvlc_exception_t *p_e )
1086 {
1087     input_thread_t *p_input_thread;
1088     float f_rate;
1089     bool b_can_rewind;
1090
1091     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1092     if( !p_input_thread )
1093         return 0.0;  /* rate < 0 indicates rewind */
1094
1095     f_rate = var_GetFloat( p_input_thread, "rate" );
1096     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1097     /* FIXME: why are negative values forbidden ?? (rewinding) */
1098     if( f_rate < 0 && !b_can_rewind )
1099     {
1100         vlc_object_release( p_input_thread );
1101         return 0.0;
1102     }
1103     vlc_object_release( p_input_thread );
1104
1105     return f_rate;
1106 }
1107
1108 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1109 {
1110     lock(p_mi);
1111     libvlc_state_t state = p_mi->state;
1112     unlock(p_mi);
1113     return state;
1114 }
1115
1116 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi,
1117                                        libvlc_exception_t *p_e )
1118 {
1119     input_thread_t *p_input_thread;
1120     bool b_seekable;
1121
1122     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1123     if ( !p_input_thread )
1124     {
1125         /* We do return the right value, no need to throw an exception */
1126         clear_if_needed(p_e);
1127         return false;
1128     }
1129     b_seekable = var_GetBool( p_input_thread, "can-seek" );
1130     vlc_object_release( p_input_thread );
1131
1132     return b_seekable;
1133 }
1134
1135 /* internal function, used by audio, video */
1136 libvlc_track_description_t *
1137         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1138                                       const char *psz_variable,
1139                                       libvlc_exception_t *p_e )
1140 {
1141     input_thread_t *p_input = libvlc_get_input_thread( p_mi, p_e );
1142     libvlc_track_description_t *p_track_description = NULL,
1143                                *p_actual, *p_previous;
1144
1145     if( !p_input )
1146         return NULL;
1147
1148     vlc_value_t val_list, text_list;
1149     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1150
1151     /* no tracks */
1152     if( val_list.p_list->i_count <= 0 )
1153         goto end;
1154
1155     p_track_description = ( libvlc_track_description_t * )
1156         malloc( sizeof( libvlc_track_description_t ) );
1157     if ( !p_track_description )
1158     {
1159         libvlc_exception_raise( p_e );
1160         libvlc_printerr( "Not enough memory" );
1161         goto end;
1162     }
1163     p_actual = p_track_description;
1164     p_previous = NULL;
1165     for( int i = 0; i < val_list.p_list->i_count; i++ )
1166     {
1167         if( !p_actual )
1168         {
1169             p_actual = ( libvlc_track_description_t * )
1170                 malloc( sizeof( libvlc_track_description_t ) );
1171             if ( !p_actual )
1172             {
1173                 libvlc_track_description_release( p_track_description );
1174                 libvlc_exception_raise( p_e );
1175                 libvlc_printerr( "Not enough memory" );
1176                 goto end;
1177             }
1178         }
1179         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1180         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1181         p_actual->p_next = NULL;
1182         if( p_previous )
1183             p_previous->p_next = p_actual;
1184         p_previous = p_actual;
1185         p_actual =  NULL;
1186     }
1187
1188 end:
1189     var_FreeList( &val_list, &text_list );
1190     vlc_object_release( p_input );
1191
1192     return p_track_description;
1193 }
1194
1195 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1196 {
1197     libvlc_track_description_t *p_actual, *p_before;
1198     p_actual = p_td;
1199
1200     while ( p_actual )
1201     {
1202         free( p_actual->psz_name );
1203         p_before = p_actual;
1204         p_actual = p_before->p_next;
1205         free( p_before );
1206     }
1207 }
1208
1209 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi,
1210                                      libvlc_exception_t *p_e )
1211 {
1212     input_thread_t *p_input_thread;
1213     bool b_can_pause;
1214
1215     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1216     if ( !p_input_thread )
1217     {
1218         /* We do return the right value, no need to throw an exception */
1219         clear_if_needed(p_e);
1220         return false;
1221     }
1222     b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1223     vlc_object_release( p_input_thread );
1224
1225     return b_can_pause;
1226 }
1227
1228 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi, libvlc_exception_t *p_e )
1229 {
1230     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1231     if( p_input_thread != NULL )
1232     {
1233         var_TriggerCallback( p_input_thread, "frame-next" );
1234         vlc_object_release( p_input_thread );
1235     }
1236     else
1237     {
1238         libvlc_exception_raise( p_e );
1239         libvlc_printerr( "No active input" );
1240     }
1241 }