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 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 #include "libvlc_internal.h"
  25
  26 #include <vlc/libvlc.h>
  27 #include <vlc_demux.h>
  28 #include <vlc_input.h>
  29 #include <vlc_vout.h>
  30 #include "libvlc.h"
  31 #include <assert.h>
  32
  33 static int
  34 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
  35                         vlc_value_t oldval, vlc_value_t newval,
  36                         void * p_userdata );
  37 static int
  38 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
  39                         vlc_value_t oldval, vlc_value_t newval,
  40                         void * p_userdata );
  41 static int
  42 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
  43                      vlc_value_t oldval, vlc_value_t newval,
  44                      void * p_userdata );
  45
  46 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
  47                        vlc_value_t oldval, vlc_value_t newval, void *p_data );
  48
  49 static const libvlc_state_t vlc_to_libvlc_state_array[] =
  50 {
  51     [INIT_S]        = libvlc_NothingSpecial,
  52     [OPENING_S]     = libvlc_Opening,
  53     [PLAYING_S]     = libvlc_Playing,
  54     [PAUSE_S]       = libvlc_Paused,
  55     [END_S]         = libvlc_Ended,
  56     [ERROR_S]       = libvlc_Error,
  57 };
  58
  59 static inline libvlc_state_t vlc_to_libvlc_state( int vlc_state )
  60 {
  61     if( vlc_state < 0 || vlc_state > 6 )
  62         return libvlc_Ended;
  63
  64     return vlc_to_libvlc_state_array[vlc_state];
  65 }
  66
  67 /*
  68  * Release the associated input thread.
  69  *
  70  * Object lock is NOT held.
  71  */
  72 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
  73 {
  74     input_thread_t * p_input_thread;
  75
  76     if( !p_mi || !p_mi->p_input_thread )
  77         return;
  78
  79     p_input_thread = p_mi->p_input_thread;
  80
  81     /* No one is tracking this input_thread apart from us. Destroy it. */
  82     if( p_mi->b_own_its_input_thread )
  83     {
  84         var_DelCallback( p_input_thread, "can-seek",
  85                          input_seekable_changed, p_mi );
  86         var_DelCallback( p_input_thread, "can-pause",
  87                          input_pausable_changed, p_mi );
  88         var_DelCallback( p_input_thread, "intf-event",
  89                          input_event_changed, p_mi );
  90
  91         /* We owned this one */
  92         input_StopThread( p_input_thread, b_input_abort );
  93         vlc_thread_join( p_input_thread );
  94
  95         var_Destroy( p_input_thread, "drawable-hwnd" );
  96         var_Destroy( p_input_thread, "drawable-xid" );
  97     }
  98
  99     vlc_object_release( p_input_thread );
 100
 101     p_mi->p_input_thread = NULL;
 102 }
 103
 104 /*
 105  * Retrieve the input thread. Be sure to release the object
 106  * once you are done with it. (libvlc Internal)
 107  *
 108  * Function will lock the object.
 109  */
 110 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi,
 111                                          libvlc_exception_t *p_e )
 112 {
 113     input_thread_t *p_input_thread;
 114
 115     if( !p_mi ) RAISENULL( "Media Instance is NULL" );
 116
 117     vlc_mutex_lock( &p_mi->object_lock );
 118
 119     if( !p_mi->p_input_thread )
 120     {
 121         vlc_mutex_unlock( &p_mi->object_lock );
 122         RAISENULL( "Input is NULL" );
 123     }
 124
 125     p_input_thread = p_mi->p_input_thread;
 126     vlc_object_hold( p_input_thread );
 127
 128     vlc_mutex_unlock( &p_mi->object_lock );
 129
 130     return p_input_thread;
 131 }
 132
 133 static int
 134 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 135                         vlc_value_t oldval, vlc_value_t newval,
 136                         void * p_userdata )
 137 {
 138     VLC_UNUSED(oldval);
 139     VLC_UNUSED(p_this);
 140     VLC_UNUSED(psz_cmd);
 141     libvlc_media_player_t * p_mi = p_userdata;
 142     libvlc_event_t event;
 143
 144     libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 145     event.type = libvlc_MediaPlayerSeekableChanged;
 146     event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
 147
 148     libvlc_event_send( p_mi->p_event_manager, &event );
 149     return VLC_SUCCESS;
 150 }
 151
 152 static int
 153 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 154                         vlc_value_t oldval, vlc_value_t newval,
 155                         void * p_userdata )
 156 {
 157     VLC_UNUSED(oldval);
 158     VLC_UNUSED(p_this);
 159     VLC_UNUSED(psz_cmd);
 160     libvlc_media_player_t * p_mi = p_userdata;
 161     libvlc_event_t event;
 162
 163     libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 164     event.type = libvlc_MediaPlayerPausableChanged;
 165     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 166
 167     libvlc_event_send( p_mi->p_event_manager, &event );
 168     return VLC_SUCCESS;
 169 }
 170
 171 static int
 172 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 173                      vlc_value_t oldval, vlc_value_t newval,
 174                      void * p_userdata )
 175 {
 176     VLC_UNUSED(oldval);
 177     input_thread_t * p_input = (input_thread_t *)p_this;
 178     libvlc_media_player_t * p_mi = p_userdata;
 179     libvlc_event_t event;
 180
 181     assert( !strcmp( psz_cmd, "intf-event" ) );
 182
 183     if( newval.i_int == INPUT_EVENT_STATE )
 184     {
 185         libvlc_state_t libvlc_state;
 186
 187         switch ( var_GetInteger( p_input, "state" ) )
 188         {
 189             case INIT_S:
 190                 libvlc_state = libvlc_NothingSpecial;
 191                 event.type = libvlc_MediaPlayerNothingSpecial;
 192                 break;
 193             case OPENING_S:
 194                 libvlc_state = libvlc_Opening;
 195                 event.type = libvlc_MediaPlayerOpening;
 196                 break;
 197             case PLAYING_S:
 198                 libvlc_state = libvlc_Playing;
 199                 event.type = libvlc_MediaPlayerPlaying;
 200                 break;
 201             case PAUSE_S:
 202                 libvlc_state = libvlc_Paused;
 203                 event.type = libvlc_MediaPlayerPaused;
 204                 break;
 205             case END_S:
 206                 libvlc_state = libvlc_Ended;
 207                 event.type = libvlc_MediaPlayerEndReached;
 208                 break;
 209             case ERROR_S:
 210                 libvlc_state = libvlc_Error;
 211                 event.type = libvlc_MediaPlayerEncounteredError;
 212                 break;
 213
 214             default:
 215                 return VLC_SUCCESS;
 216         }
 217
 218         libvlc_media_set_state( p_mi->p_md, libvlc_state, NULL );
 219         libvlc_event_send( p_mi->p_event_manager, &event );
 220     }
 221     else if( newval.i_int == INPUT_EVENT_TIMES )
 222     {
 223         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 224             return VLC_SUCCESS; /* Don't send the position while stopped */
 225
 226         /* */
 227         event.type = libvlc_MediaPlayerPositionChanged;
 228         event.u.media_player_position_changed.new_position =
 229                                           var_GetFloat( p_input, "position" );
 230         libvlc_event_send( p_mi->p_event_manager, &event );
 231
 232         /* */
 233         event.type = libvlc_MediaPlayerTimeChanged;
 234         event.u.media_player_time_changed.new_time =
 235                                                var_GetTime( p_input, "time" );
 236         libvlc_event_send( p_mi->p_event_manager, &event );
 237     }
 238
 239     return VLC_SUCCESS;
 240
 241 }
 242
 243
 244 /**************************************************************************
 245  * Create a Media Instance object.
 246  *
 247  * Refcount strategy:
 248  * - All items created by _new start with a refcount set to 1.
 249  * - Accessor _release decrease the refcount by 1, if after that
 250  *   operation the refcount is 0, the object is destroyed.
 251  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 252  *
 253  * Object locking strategy:
 254  * - No lock held while in constructor.
 255  * - When accessing any member variable this lock is held. (XXX who locks?)
 256  * - When attempting to destroy the object the lock is also held.
 257  **************************************************************************/
 258 libvlc_media_player_t *
 259 libvlc_media_player_new( libvlc_instance_t * p_libvlc_instance,
 260                            libvlc_exception_t * p_e )
 261 {
 262     libvlc_media_player_t * p_mi;
 263
 264     if( !p_libvlc_instance )
 265     {
 266         libvlc_exception_raise( p_e, "invalid libvlc instance" );
 267         return NULL;
 268     }
 269
 270     p_mi = malloc( sizeof(libvlc_media_player_t) );
 271     if( !p_mi )
 272     {
 273         libvlc_exception_raise( p_e, "Not enough memory" );
 274         return NULL;
 275     }
 276     p_mi->p_md = NULL;
 277     p_mi->drawable.xid = 0;
 278     p_mi->drawable.hwnd = NULL;
 279     p_mi->p_libvlc_instance = p_libvlc_instance;
 280     p_mi->p_input_thread = NULL;
 281     p_mi->i_refcount = 1;
 282     p_mi->b_own_its_input_thread = true;
 283     vlc_mutex_init( &p_mi->object_lock );
 284     p_mi->p_event_manager = libvlc_event_manager_new( p_mi,
 285             p_libvlc_instance, p_e );
 286     if( libvlc_exception_raised( p_e ) )
 287     {
 288         free( p_mi );
 289         return NULL;
 290     }
 291
 292     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 293             libvlc_MediaPlayerNothingSpecial, p_e );
 294     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 295             libvlc_MediaPlayerOpening, p_e );
 296     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 297             libvlc_MediaPlayerBuffering, p_e );
 298     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 299             libvlc_MediaPlayerPlaying, p_e );
 300     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 301             libvlc_MediaPlayerPaused, p_e );
 302     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 303             libvlc_MediaPlayerStopped, p_e );
 304     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 305             libvlc_MediaPlayerForward, p_e );
 306     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 307             libvlc_MediaPlayerBackward, p_e );
 308     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 309             libvlc_MediaPlayerEndReached, p_e );
 310     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 311             libvlc_MediaPlayerEncounteredError, p_e );
 312
 313     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 314             libvlc_MediaPlayerPositionChanged, p_e );
 315     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 316             libvlc_MediaPlayerTimeChanged, p_e );
 317      libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 318             libvlc_MediaPlayerTitleChanged, p_e );
 319     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 320             libvlc_MediaPlayerSeekableChanged, p_e );
 321     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 322             libvlc_MediaPlayerPausableChanged, p_e );
 323
 324     /* Snapshot initialization */
 325     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 326            libvlc_MediaPlayerSnapshotTaken, p_e );
 327     /* Attach a var callback to the global object to provide the glue between
 328         vout_thread that generates the event and media_player that re-emits it
 329         with its own event manager
 330     */
 331     var_Create( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 332                 VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 333     var_AddCallback( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 334                      SnapshotTakenCallback, p_mi );
 335
 336     return p_mi;
 337 }
 338
 339 /**************************************************************************
 340  * Create a Media Instance object with a media descriptor.
 341  **************************************************************************/
 342 libvlc_media_player_t *
 343 libvlc_media_player_new_from_media(
 344                                     libvlc_media_t * p_md,
 345                                     libvlc_exception_t *p_e )
 346 {
 347     libvlc_media_player_t * p_mi;
 348     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance, p_e );
 349
 350     if( !p_mi )
 351         return NULL;
 352
 353     libvlc_media_retain( p_md );
 354     p_mi->p_md = p_md;
 355
 356     return p_mi;
 357 }
 358
 359 /**************************************************************************
 360  * Create a new media instance object from an input_thread (Libvlc Internal).
 361  **************************************************************************/
 362 libvlc_media_player_t * libvlc_media_player_new_from_input_thread(
 363                                    struct libvlc_instance_t *p_libvlc_instance,
 364                                    input_thread_t *p_input,
 365                                    libvlc_exception_t *p_e )
 366 {
 367     libvlc_media_player_t * p_mi;
 368
 369     if( !p_input )
 370     {
 371         libvlc_exception_raise( p_e, "invalid input thread" );
 372         return NULL;
 373     }
 374
 375     p_mi = libvlc_media_player_new( p_libvlc_instance, p_e );
 376
 377     if( !p_mi )
 378         return NULL;
 379
 380     p_mi->p_md = libvlc_media_new_from_input_item(
 381                     p_libvlc_instance,
 382                     input_GetItem( p_input ), p_e );
 383
 384     if( !p_mi->p_md )
 385     {
 386         libvlc_media_player_destroy( p_mi );
 387         return NULL;
 388     }
 389
 390     /* will be released in media_player_release() */
 391     vlc_object_hold( p_input );
 392
 393     p_mi->p_input_thread = p_input;
 394     p_mi->b_own_its_input_thread = false;
 395
 396     return p_mi;
 397 }
 398
 399 /**************************************************************************
 400  * Destroy a Media Instance object (libvlc internal)
 401  *
 402  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 403  **************************************************************************/
 404 void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 405 {
 406     input_thread_t *p_input_thread;
 407     libvlc_exception_t p_e;
 408
 409     libvlc_exception_init( &p_e );
 410
 411     if( !p_mi )
 412         return;
 413
 414         /* Detach Callback from the main libvlc object */
 415     var_DelCallback( p_mi->p_libvlc_instance->p_libvlc_int,
 416                      "vout-snapshottaken", SnapshotTakenCallback, p_mi );
 417
 418     p_input_thread = libvlc_get_input_thread( p_mi, &p_e );
 419
 420     if( libvlc_exception_raised( &p_e ) )
 421     {
 422         libvlc_event_manager_release( p_mi->p_event_manager );
 423         libvlc_exception_clear( &p_e );
 424         free( p_mi );
 425         return; /* no need to worry about no input thread */
 426     }
 427     vlc_mutex_destroy( &p_mi->object_lock );
 428
 429     vlc_object_release( p_input_thread );
 430
 431     libvlc_media_release( p_mi->p_md );
 432
 433     free( p_mi );
 434 }
 435
 436 /**************************************************************************
 437  * Release a Media Instance object.
 438  *
 439  * Function does the locking.
 440  **************************************************************************/
 441 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 442 {
 443     if( !p_mi )
 444         return;
 445
 446     vlc_mutex_lock( &p_mi->object_lock );
 447
 448     p_mi->i_refcount--;
 449
 450     if( p_mi->i_refcount > 0 )
 451     {
 452         vlc_mutex_unlock( &p_mi->object_lock );
 453         return;
 454     }
 455     vlc_mutex_unlock( &p_mi->object_lock );
 456     vlc_mutex_destroy( &p_mi->object_lock );
 457
 458     release_input_thread( p_mi, true );
 459
 460     libvlc_event_manager_release( p_mi->p_event_manager );
 461
 462     libvlc_media_release( p_mi->p_md );
 463
 464     free( p_mi );
 465 }
 466
 467 /**************************************************************************
 468  * Retain a Media Instance object.
 469  *
 470  * Caller must hold the lock.
 471  **************************************************************************/
 472 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 473 {
 474     if( !p_mi )
 475         return;
 476
 477     p_mi->i_refcount++;
 478 }
 479
 480 /**************************************************************************
 481  * Set the Media descriptor associated with the instance.
 482  *
 483  * Enter without lock -- function will lock the object.
 484  **************************************************************************/
 485 void libvlc_media_player_set_media(
 486                             libvlc_media_player_t *p_mi,
 487                             libvlc_media_t *p_md,
 488                             libvlc_exception_t *p_e )
 489 {
 490     VLC_UNUSED(p_e);
 491
 492     if( !p_mi )
 493         return;
 494
 495     vlc_mutex_lock( &p_mi->object_lock );
 496
 497     /* FIXME I am not sure if it is a user request or on die(eof/error)
 498      * request here */
 499     release_input_thread( p_mi,
 500                           p_mi->p_input_thread &&
 501                           !p_mi->p_input_thread->b_eof &&
 502                           !p_mi->p_input_thread->b_error );
 503
 504     if( p_mi->p_md )
 505         libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, p_e );
 506
 507     libvlc_media_release( p_mi->p_md );
 508
 509     if( !p_md )
 510     {
 511         p_mi->p_md = NULL;
 512         vlc_mutex_unlock( &p_mi->object_lock );
 513         return; /* It is ok to pass a NULL md */
 514     }
 515
 516     libvlc_media_retain( p_md );
 517     p_mi->p_md = p_md;
 518
 519     /* The policy here is to ignore that we were created using a different
 520      * libvlc_instance, because we don't really care */
 521     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 522
 523     vlc_mutex_unlock( &p_mi->object_lock );
 524 }
 525
 526 /**************************************************************************
 527  * Get the Media descriptor associated with the instance.
 528  **************************************************************************/
 529 libvlc_media_t *
 530 libvlc_media_player_get_media(
 531                             libvlc_media_player_t *p_mi,
 532                             libvlc_exception_t *p_e )
 533 {
 534     VLC_UNUSED(p_e);
 535
 536     if( !p_mi->p_md )
 537         return NULL;
 538
 539     libvlc_media_retain( p_mi->p_md );
 540     return p_mi->p_md;
 541 }
 542
 543 /**************************************************************************
 544  * Get the event Manager.
 545  **************************************************************************/
 546 libvlc_event_manager_t *
 547 libvlc_media_player_event_manager(
 548                             libvlc_media_player_t *p_mi,
 549                             libvlc_exception_t *p_e )
 550 {
 551     VLC_UNUSED(p_e);
 552
 553     return p_mi->p_event_manager;
 554 }
 555
 556 /**************************************************************************
 557  * Trigger a snapshot Taken Event.
 558  *************************************************************************/
 559 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
 560                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 561 {
 562     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
 563     VLC_UNUSED(p_this) ;
 564
 565     libvlc_media_player_t* p_mi = (libvlc_media_player_t*) p_data ;
 566     libvlc_event_t event ;
 567     event.type = libvlc_MediaPlayerSnapshotTaken ;
 568     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string ;
 569     /* Snapshot psz data is a vlc_variable owned by libvlc object .
 570          Its memmory management is taken care by the obj*/
 571     msg_Dbg( p_this, "about to emit libvlc_snapshot_taken.make psz_str=0x%p"
 572              " (%s)", event.u.media_player_snapshot_taken.psz_filename,
 573              event.u.media_player_snapshot_taken.psz_filename );
 574     libvlc_event_send( p_mi->p_event_manager, &event );
 575
 576     return VLC_SUCCESS;
 577 }
 578
 579 /**************************************************************************
 580  * Tell media player to start playing.
 581  **************************************************************************/
 582 void libvlc_media_player_play( libvlc_media_player_t *p_mi,
 583                                  libvlc_exception_t *p_e )
 584 {
 585     input_thread_t * p_input_thread;
 586
 587     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 588     {
 589         /* A thread already exists, send it a play message */
 590         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 591         vlc_object_release( p_input_thread );
 592         return;
 593     }
 594
 595     /* Ignore previous exception */
 596     libvlc_exception_clear( p_e );
 597
 598     vlc_mutex_lock( &p_mi->object_lock );
 599
 600     if( !p_mi->p_md )
 601     {
 602         libvlc_exception_raise( p_e, "no associated media descriptor" );
 603         vlc_mutex_unlock( &p_mi->object_lock );
 604         return;
 605     }
 606
 607     p_mi->p_input_thread = input_CreateThread(
 608             p_mi->p_libvlc_instance->p_libvlc_int, p_mi->p_md->p_input_item );
 609
 610
 611     if( !p_mi->p_input_thread )
 612     {
 613         vlc_mutex_unlock( &p_mi->object_lock );
 614         return;
 615     }
 616
 617     p_input_thread = p_mi->p_input_thread;
 618
 619     var_Create( p_input_thread, "drawable-xid", VLC_VAR_INTEGER );
 620     if( p_mi->drawable.xid )
 621         var_SetInteger( p_input_thread, "drawable-xid", p_mi->drawable.xid );
 622
 623     var_Create( p_input_thread, "drawable-hwnd", VLC_VAR_ADDRESS );
 624     if( p_mi->drawable.hwnd != NULL )
 625     {
 626         vlc_value_t val = { .p_address = p_mi->drawable.hwnd };
 627         var_Set( p_input_thread, "drawable-hwnd", val );
 628     }
 629
 630     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 631     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 632     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 633
 634     vlc_mutex_unlock( &p_mi->object_lock );
 635 }
 636
 637 /**************************************************************************
 638  * Pause.
 639  **************************************************************************/
 640 void libvlc_media_player_pause( libvlc_media_player_t *p_mi,
 641                                   libvlc_exception_t *p_e )
 642 {
 643     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 644
 645     if( !p_input_thread )
 646         return;
 647
 648     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 649
 650     if( state == libvlc_Playing )
 651     {
 652         if( libvlc_media_player_can_pause( p_mi, p_e ) )
 653             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 654         else
 655             libvlc_media_player_stop( p_mi, p_e );
 656     }
 657     else
 658         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 659
 660     vlc_object_release( p_input_thread );
 661 }
 662
 663 /**************************************************************************
 664  * Tells whether the media player is currently playing.
 665  *
 666  * Enter with lock held.
 667  **************************************************************************/
 668 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi,
 669                                      libvlc_exception_t *p_e )
 670 {
 671     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 672
 673     if( !p_input_thread )
 674         return 0;
 675
 676     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 677
 678     vlc_object_release( p_input_thread );
 679
 680     if( state == libvlc_Playing )
 681     {
 682         return 1;
 683     }
 684     return 0;
 685 }
 686
 687
 688 /**************************************************************************
 689  * Stop playing.
 690  **************************************************************************/
 691 void libvlc_media_player_stop( libvlc_media_player_t *p_mi,
 692                                  libvlc_exception_t *p_e )
 693 {
 694     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 695
 696     if( state == libvlc_Playing || state == libvlc_Paused )
 697     {
 698         /* Send a stop notification event only if we are in playing or
 699          * paused states */
 700         libvlc_media_set_state( p_mi->p_md, libvlc_Ended, p_e );
 701
 702         /* Construct and send the event */
 703         libvlc_event_t event;
 704         event.type = libvlc_MediaPlayerStopped;
 705         libvlc_event_send( p_mi->p_event_manager, &event );
 706     }
 707
 708     if( p_mi->b_own_its_input_thread )
 709     {
 710         vlc_mutex_lock( &p_mi->object_lock );
 711         release_input_thread( p_mi, true ); /* This will stop the input thread */
 712         vlc_mutex_unlock( &p_mi->object_lock );
 713     }
 714     else
 715     {
 716         input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 717
 718         if( !p_input_thread )
 719             return;
 720
 721         input_StopThread( p_input_thread, true );
 722         vlc_object_release( p_input_thread );
 723     }
 724 }
 725
 726 /**************************************************************************
 727  * set_xwindow
 728  **************************************************************************/
 729 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 730                                       uint32_t drawable,
 731                                       libvlc_exception_t *p_e )
 732 {
 733     (void) p_e;
 734     p_mi->drawable.xid = drawable;
 735 }
 736
 737 /**************************************************************************
 738  * get_xwindow
 739  **************************************************************************/
 740 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 741 {
 742     return p_mi->drawable.xid;
 743 }
 744
 745 /**************************************************************************
 746  * set_hwnd
 747  **************************************************************************/
 748 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 749                                    void *drawable,
 750                                    libvlc_exception_t *p_e )
 751 {
 752     (void) p_e;
 753     p_mi->drawable.hwnd = drawable;
 754 }
 755
 756 /**************************************************************************
 757  * get_hwnd
 758  **************************************************************************/
 759 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 760 {
 761     return p_mi->drawable.hwnd;
 762 }
 763
 764 /**************************************************************************
 765  * Set Drawable
 766  **************************************************************************/
 767 void libvlc_media_player_set_drawable( libvlc_media_player_t *p_mi,
 768                                        libvlc_drawable_t drawable,
 769                                        libvlc_exception_t *p_e )
 770 {
 771 #ifdef WIN32
 772     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 773         p_mi->drawable.hwnd = (HWND)drawable;
 774     else
 775         libvlc_exception_raise(p_e, "Operation not supported");
 776 #else
 777     p_mi->drawable.xid = drawable;
 778 #endif
 779 }
 780
 781 /**************************************************************************
 782  * Get Drawable
 783  **************************************************************************/
 784 libvlc_drawable_t
 785 libvlc_media_player_get_drawable ( libvlc_media_player_t *p_mi,
 786                                    libvlc_exception_t *p_e )
 787 {
 788     VLC_UNUSED(p_e);
 789
 790 #ifdef WIN32
 791     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 792         return (libvlc_drawable_t)p_mi->drawable.hwnd;
 793     else
 794         return 0;
 795 #else
 796     return p_mi->drawable.xid;
 797 #endif
 798 }
 799
 800 /**************************************************************************
 801  * Getters for stream information
 802  **************************************************************************/
 803 libvlc_time_t libvlc_media_player_get_length(
 804                              libvlc_media_player_t *p_mi,
 805                              libvlc_exception_t *p_e )
 806 {
 807     input_thread_t *p_input_thread;
 808     vlc_value_t val;
 809
 810     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 811     if( !p_input_thread )
 812         return -1;
 813
 814     var_Get( p_input_thread, "length", &val );
 815     vlc_object_release( p_input_thread );
 816
 817     return (val.i_time+500LL)/1000LL;
 818 }
 819
 820 libvlc_time_t libvlc_media_player_get_time(
 821                                    libvlc_media_player_t *p_mi,
 822                                    libvlc_exception_t *p_e )
 823 {
 824     input_thread_t *p_input_thread;
 825     vlc_value_t val;
 826
 827     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 828     if( !p_input_thread )
 829         return -1;
 830
 831     var_Get( p_input_thread , "time", &val );
 832     vlc_object_release( p_input_thread );
 833     return (val.i_time+500LL)/1000LL;
 834 }
 835
 836 void libvlc_media_player_set_time(
 837                                  libvlc_media_player_t *p_mi,
 838                                  libvlc_time_t time,
 839                                  libvlc_exception_t *p_e )
 840 {
 841     input_thread_t *p_input_thread;
 842     vlc_value_t value;
 843
 844     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 845     if( !p_input_thread )
 846         return;
 847
 848     value.i_time = time*1000LL;
 849     var_Set( p_input_thread, "time", value );
 850     vlc_object_release( p_input_thread );
 851 }
 852
 853 void libvlc_media_player_set_position(
 854                                 libvlc_media_player_t *p_mi,
 855                                 float position,
 856                                 libvlc_exception_t *p_e )
 857 {
 858     input_thread_t *p_input_thread;
 859     vlc_value_t val;
 860     val.f_float = position;
 861
 862     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 863     if( !p_input_thread )
 864         return;
 865
 866     var_Set( p_input_thread, "position", val );
 867     vlc_object_release( p_input_thread );
 868 }
 869
 870 float libvlc_media_player_get_position(
 871                                  libvlc_media_player_t *p_mi,
 872                                  libvlc_exception_t *p_e )
 873 {
 874     input_thread_t *p_input_thread;
 875     vlc_value_t val;
 876
 877     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 878     if( !p_input_thread )
 879         return -1.0;
 880
 881     var_Get( p_input_thread, "position", &val );
 882     vlc_object_release( p_input_thread );
 883
 884     return val.f_float;
 885 }
 886
 887 void libvlc_media_player_set_chapter(
 888                                  libvlc_media_player_t *p_mi,
 889                                  int chapter,
 890                                  libvlc_exception_t *p_e )
 891 {
 892     input_thread_t *p_input_thread;
 893     vlc_value_t val;
 894     val.i_int = chapter;
 895
 896     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 897     if( !p_input_thread )
 898         return;
 899
 900     var_Set( p_input_thread, "chapter", val );
 901     vlc_object_release( p_input_thread );
 902 }
 903
 904 int libvlc_media_player_get_chapter(
 905                                  libvlc_media_player_t *p_mi,
 906                                  libvlc_exception_t *p_e )
 907 {
 908     input_thread_t *p_input_thread;
 909     vlc_value_t val;
 910
 911     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 912     if( !p_input_thread )
 913         return -1;
 914
 915     var_Get( p_input_thread, "chapter", &val );
 916     vlc_object_release( p_input_thread );
 917
 918     return val.i_int;
 919 }
 920
 921 int libvlc_media_player_get_chapter_count(
 922                                  libvlc_media_player_t *p_mi,
 923                                  libvlc_exception_t *p_e )
 924 {
 925     input_thread_t *p_input_thread;
 926     vlc_value_t val;
 927
 928     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 929     if( !p_input_thread )
 930         return -1;
 931
 932     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 933     vlc_object_release( p_input_thread );
 934
 935     return val.i_int;
 936 }
 937
 938 int libvlc_media_player_get_chapter_count_for_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     vlc_value_t val;
 945
 946     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 947     if( !p_input_thread )
 948         return -1;
 949
 950     char *psz_name;
 951     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 952     {
 953         vlc_object_release( p_input_thread );
 954         return -1;
 955     }
 956     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 957     vlc_object_release( p_input_thread );
 958     free( psz_name );
 959
 960     return val.i_int;
 961 }
 962
 963 void libvlc_media_player_set_title(
 964                                  libvlc_media_player_t *p_mi,
 965                                  int i_title,
 966                                  libvlc_exception_t *p_e )
 967 {
 968     input_thread_t *p_input_thread;
 969     vlc_value_t val;
 970     val.i_int = i_title;
 971
 972     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 973     if( !p_input_thread )
 974         return;
 975
 976     var_Set( p_input_thread, "title", val );
 977     vlc_object_release( p_input_thread );
 978
 979     //send event
 980     libvlc_event_t event;
 981     event.type = libvlc_MediaPlayerTitleChanged;
 982     event.u.media_player_title_changed.new_title = i_title;
 983     libvlc_event_send( p_mi->p_event_manager, &event );
 984 }
 985
 986 int libvlc_media_player_get_title(
 987                                  libvlc_media_player_t *p_mi,
 988                                  libvlc_exception_t *p_e )
 989 {
 990     input_thread_t *p_input_thread;
 991     vlc_value_t val;
 992
 993     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 994     if( !p_input_thread )
 995         return -1;
 996
 997     var_Get( p_input_thread, "title", &val );
 998     vlc_object_release( p_input_thread );
 999
1000     return val.i_int;
1001 }
1002
1003 int libvlc_media_player_get_title_count(
1004                                  libvlc_media_player_t *p_mi,
1005                                  libvlc_exception_t *p_e )
1006 {
1007     input_thread_t *p_input_thread;
1008     vlc_value_t val;
1009
1010     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1011     if( !p_input_thread )
1012         return -1;
1013
1014     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1015     vlc_object_release( p_input_thread );
1016
1017     return val.i_int;
1018 }
1019
1020 void libvlc_media_player_next_chapter(
1021                                  libvlc_media_player_t *p_mi,
1022                                  libvlc_exception_t *p_e )
1023 {
1024     input_thread_t *p_input_thread;
1025
1026     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1027     if( !p_input_thread )
1028         return;
1029
1030     int i_type = var_Type( p_input_thread, "next-chapter" );
1031     vlc_value_t val;
1032     val.b_bool = true;
1033     var_Set( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1034                             "next-chapter":"next-title", val );
1035
1036     vlc_object_release( p_input_thread );
1037 }
1038
1039 void libvlc_media_player_previous_chapter(
1040                                  libvlc_media_player_t *p_mi,
1041                                  libvlc_exception_t *p_e )
1042 {
1043     input_thread_t *p_input_thread;
1044
1045     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1046     if( !p_input_thread )
1047         return;
1048
1049     int i_type = var_Type( p_input_thread, "next-chapter" );
1050     vlc_value_t val;
1051     val.b_bool = true;
1052     var_Set( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1053                             "prev-chapter":"prev-title", val );
1054
1055     vlc_object_release( p_input_thread );
1056 }
1057
1058 float libvlc_media_player_get_fps(
1059                                  libvlc_media_player_t *p_mi,
1060                                  libvlc_exception_t *p_e)
1061 {
1062     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1063     double f_fps = 0.0;
1064
1065     if( p_input_thread )
1066     {
1067         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1068             f_fps = 0.0;
1069         vlc_object_release( p_input_thread );
1070     }
1071     return f_fps;
1072 }
1073
1074 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi,
1075                                      libvlc_exception_t *p_e)
1076 {
1077     input_thread_t *p_input_thread =
1078                             libvlc_get_input_thread ( p_mi, p_e);
1079     if ( !p_input_thread )
1080         return false;
1081
1082     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
1083     {
1084         vlc_object_release( p_input_thread );
1085         return true;
1086     }
1087     vlc_object_release( p_input_thread );
1088     return false;
1089 }
1090
1091 void libvlc_media_player_set_rate(
1092                                  libvlc_media_player_t *p_mi,
1093                                  float rate,
1094                                  libvlc_exception_t *p_e )
1095 {
1096     input_thread_t *p_input_thread;
1097     vlc_value_t val;
1098     bool b_can_rewind;
1099
1100     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1101     if( !p_input_thread )
1102         return;
1103
1104     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1105     if( (rate < 0.0) && !b_can_rewind )
1106     {
1107         vlc_object_release( p_input_thread );
1108         libvlc_exception_raise( p_e, "Rate value is invalid" );
1109         return;
1110     }
1111
1112     val.i_int = 1000.0f/rate;
1113     var_Set( p_input_thread, "rate", val );
1114     vlc_object_release( p_input_thread );
1115 }
1116
1117 float libvlc_media_player_get_rate(
1118                                  libvlc_media_player_t *p_mi,
1119                                  libvlc_exception_t *p_e )
1120 {
1121     input_thread_t *p_input_thread;
1122     vlc_value_t val;
1123     bool b_can_rewind;
1124
1125     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1126     if( !p_input_thread )
1127         return 0.0;  /* rate < 0 indicates rewind */
1128
1129     var_Get( p_input_thread, "rate", &val );
1130     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1131     if( (val.i_int < 0) && !b_can_rewind )
1132     {
1133         libvlc_exception_raise( p_e, "invalid rate" );
1134         return 0.0;
1135     }
1136     vlc_object_release( p_input_thread );
1137
1138     return (float)1000.0f/val.i_int;
1139 }
1140
1141 libvlc_state_t libvlc_media_player_get_state(
1142                                  libvlc_media_player_t *p_mi,
1143                                  libvlc_exception_t *p_e )
1144 {
1145     input_thread_t *p_input_thread;
1146     libvlc_state_t state = libvlc_Ended;
1147     vlc_value_t val;
1148
1149     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1150     if( !p_input_thread )
1151     {
1152         /* We do return the right value, no need to throw an exception */
1153         if( libvlc_exception_raised( p_e ) )
1154             libvlc_exception_clear( p_e );
1155         return state;
1156     }
1157
1158     var_Get( p_input_thread, "state", &val );
1159     state = vlc_to_libvlc_state(val.i_int);
1160
1161     if( state == PLAYING_S )
1162     {
1163         float caching;
1164         caching = var_GetFloat( p_input_thread, "cache" );
1165         if( caching > 0.0 && caching < 1.0 )
1166             state = libvlc_Buffering;
1167     }
1168     vlc_object_release( p_input_thread );
1169     return state;
1170 }
1171
1172 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi,
1173                                        libvlc_exception_t *p_e )
1174 {
1175     input_thread_t *p_input_thread;
1176     vlc_value_t val;
1177
1178     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1179     if ( !p_input_thread )
1180     {
1181         /* We do return the right value, no need to throw an exception */
1182         if( libvlc_exception_raised( p_e ) )
1183             libvlc_exception_clear( p_e );
1184         return false;
1185     }
1186     var_Get( p_input_thread, "can-seek", &val );
1187     vlc_object_release( p_input_thread );
1188
1189     return val.b_bool;
1190 }
1191
1192 /* internal function, used by audio, video */
1193 libvlc_track_description_t *
1194         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1195                                       const char *psz_variable,
1196                                       libvlc_exception_t *p_e )
1197 {
1198     input_thread_t *p_input = libvlc_get_input_thread( p_mi, p_e );
1199
1200     if( !p_input )
1201         return NULL;
1202
1203     vlc_value_t val_list, text_list;
1204     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1205
1206     if( val_list.p_list->i_count <= 0 ) /* no tracks */
1207         return NULL;
1208
1209     libvlc_track_description_t *p_track_description, *p_actual, *p_previous;
1210     p_track_description = ( libvlc_track_description_t * )
1211         malloc( sizeof( libvlc_track_description_t ) );
1212     if ( !p_track_description )
1213     {
1214         var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1215                     &val_list, &text_list);
1216         vlc_object_release( p_input );
1217         libvlc_exception_raise( p_e, "no enough memory" );
1218         return NULL;
1219     }
1220     p_actual = p_track_description;
1221     p_previous = NULL;
1222     for( int i = 0; i < val_list.p_list->i_count; i++ )
1223     {
1224         if( !p_actual )
1225         {
1226             p_actual = ( libvlc_track_description_t * )
1227                 malloc( sizeof( libvlc_track_description_t ) );
1228             if ( !p_actual )
1229             {
1230                 libvlc_track_description_release( p_track_description );
1231                 var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1232                             &val_list, &text_list);
1233                 vlc_object_release( p_input );
1234                 libvlc_exception_raise( p_e, "no enough memory" );
1235                 return NULL;
1236             }
1237         }
1238         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1239         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1240         p_actual->p_next = NULL;
1241         if( p_previous )
1242             p_previous->p_next = p_actual;
1243         p_previous = p_actual;
1244         p_actual =  NULL;
1245     }
1246     var_Change( p_input, psz_variable, VLC_VAR_FREELIST, &val_list, &text_list);
1247     vlc_object_release( p_input );
1248
1249     return p_track_description;
1250 }
1251
1252 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1253 {
1254     libvlc_track_description_t *p_actual, *p_before;
1255     p_actual = p_td;
1256
1257     while ( p_actual )
1258     {
1259         free( p_actual->psz_name );
1260         p_before = p_actual;
1261         p_actual = p_before->p_next;
1262         free( p_before );
1263     }
1264 }
1265
1266 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi,
1267                                      libvlc_exception_t *p_e )
1268 {
1269     input_thread_t *p_input_thread;
1270     vlc_value_t val;
1271
1272     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1273     if ( !p_input_thread )
1274     {
1275         /* We do return the right value, no need to throw an exception */
1276         if( libvlc_exception_raised( p_e ) )
1277             libvlc_exception_clear( p_e );
1278         return false;
1279     }
1280     var_Get( p_input_thread, "can-pause", &val );
1281     vlc_object_release( p_input_thread );
1282
1283     return val.b_bool;
1284 }