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         var_Destroy( p_input_thread, "drawable-agl" );
  98     }
  99
 100     vlc_object_release( p_input_thread );
 101
 102     p_mi->p_input_thread = NULL;
 103 }
 104
 105 /*
 106  * Retrieve the input thread. Be sure to release the object
 107  * once you are done with it. (libvlc Internal)
 108  *
 109  * Function will lock the object.
 110  */
 111 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi,
 112                                          libvlc_exception_t *p_e )
 113 {
 114     input_thread_t *p_input_thread;
 115
 116     if( !p_mi ) RAISENULL( "Media Instance is NULL" );
 117
 118     vlc_mutex_lock( &p_mi->object_lock );
 119
 120     if( !p_mi->p_input_thread )
 121     {
 122         vlc_mutex_unlock( &p_mi->object_lock );
 123         RAISENULL( "Input is NULL" );
 124     }
 125
 126     p_input_thread = p_mi->p_input_thread;
 127     vlc_object_hold( p_input_thread );
 128
 129     vlc_mutex_unlock( &p_mi->object_lock );
 130
 131     return p_input_thread;
 132 }
 133
 134 static int
 135 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 136                         vlc_value_t oldval, vlc_value_t newval,
 137                         void * p_userdata )
 138 {
 139     VLC_UNUSED(oldval);
 140     VLC_UNUSED(p_this);
 141     VLC_UNUSED(psz_cmd);
 142     libvlc_media_player_t * p_mi = p_userdata;
 143     libvlc_event_t event;
 144
 145     libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 146     event.type = libvlc_MediaPlayerSeekableChanged;
 147     event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
 148
 149     libvlc_event_send( p_mi->p_event_manager, &event );
 150     return VLC_SUCCESS;
 151 }
 152
 153 static int
 154 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 155                         vlc_value_t oldval, vlc_value_t newval,
 156                         void * p_userdata )
 157 {
 158     VLC_UNUSED(oldval);
 159     VLC_UNUSED(p_this);
 160     VLC_UNUSED(psz_cmd);
 161     libvlc_media_player_t * p_mi = p_userdata;
 162     libvlc_event_t event;
 163
 164     libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 165     event.type = libvlc_MediaPlayerPausableChanged;
 166     event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
 167
 168     libvlc_event_send( p_mi->p_event_manager, &event );
 169     return VLC_SUCCESS;
 170 }
 171
 172 static int
 173 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
 174                      vlc_value_t oldval, vlc_value_t newval,
 175                      void * p_userdata )
 176 {
 177     VLC_UNUSED(oldval);
 178     input_thread_t * p_input = (input_thread_t *)p_this;
 179     libvlc_media_player_t * p_mi = p_userdata;
 180     libvlc_event_t event;
 181
 182     assert( !strcmp( psz_cmd, "intf-event" ) );
 183
 184     if( newval.i_int == INPUT_EVENT_STATE )
 185     {
 186         libvlc_state_t libvlc_state;
 187
 188         switch ( var_GetInteger( p_input, "state" ) )
 189         {
 190             case INIT_S:
 191                 libvlc_state = libvlc_NothingSpecial;
 192                 event.type = libvlc_MediaPlayerNothingSpecial;
 193                 break;
 194             case OPENING_S:
 195                 libvlc_state = libvlc_Opening;
 196                 event.type = libvlc_MediaPlayerOpening;
 197                 break;
 198             case PLAYING_S:
 199                 libvlc_state = libvlc_Playing;
 200                 event.type = libvlc_MediaPlayerPlaying;
 201                 break;
 202             case PAUSE_S:
 203                 libvlc_state = libvlc_Paused;
 204                 event.type = libvlc_MediaPlayerPaused;
 205                 break;
 206             case END_S:
 207                 libvlc_state = libvlc_Ended;
 208                 event.type = libvlc_MediaPlayerEndReached;
 209                 break;
 210             case ERROR_S:
 211                 libvlc_state = libvlc_Error;
 212                 event.type = libvlc_MediaPlayerEncounteredError;
 213                 break;
 214
 215             default:
 216                 return VLC_SUCCESS;
 217         }
 218
 219         libvlc_media_set_state( p_mi->p_md, libvlc_state, NULL );
 220         libvlc_event_send( p_mi->p_event_manager, &event );
 221     }
 222     else if( newval.i_int == INPUT_EVENT_TIMES )
 223     {
 224         if( var_GetInteger( p_input, "state" ) != PLAYING_S )
 225             return VLC_SUCCESS; /* Don't send the position while stopped */
 226
 227         /* */
 228         event.type = libvlc_MediaPlayerPositionChanged;
 229         event.u.media_player_position_changed.new_position =
 230                                           var_GetFloat( p_input, "position" );
 231         libvlc_event_send( p_mi->p_event_manager, &event );
 232
 233         /* */
 234         event.type = libvlc_MediaPlayerTimeChanged;
 235         event.u.media_player_time_changed.new_time =
 236                                                var_GetTime( p_input, "time" );
 237         libvlc_event_send( p_mi->p_event_manager, &event );
 238     }
 239
 240     return VLC_SUCCESS;
 241
 242 }
 243
 244
 245 /**************************************************************************
 246  * Create a Media Instance object.
 247  *
 248  * Refcount strategy:
 249  * - All items created by _new start with a refcount set to 1.
 250  * - Accessor _release decrease the refcount by 1, if after that
 251  *   operation the refcount is 0, the object is destroyed.
 252  * - Accessor _retain increase the refcount by 1 (XXX: to implement)
 253  *
 254  * Object locking strategy:
 255  * - No lock held while in constructor.
 256  * - When accessing any member variable this lock is held. (XXX who locks?)
 257  * - When attempting to destroy the object the lock is also held.
 258  **************************************************************************/
 259 libvlc_media_player_t *
 260 libvlc_media_player_new( libvlc_instance_t * p_libvlc_instance,
 261                            libvlc_exception_t * p_e )
 262 {
 263     libvlc_media_player_t * p_mi;
 264
 265     if( !p_libvlc_instance )
 266     {
 267         libvlc_exception_raise( p_e, "invalid libvlc instance" );
 268         return NULL;
 269     }
 270
 271     p_mi = malloc( sizeof(libvlc_media_player_t) );
 272     if( !p_mi )
 273     {
 274         libvlc_exception_raise( p_e, "Not enough memory" );
 275         return NULL;
 276     }
 277     p_mi->p_md = NULL;
 278     p_mi->drawable.agl = 0;
 279     p_mi->drawable.xid = 0;
 280     p_mi->drawable.hwnd = NULL;
 281     p_mi->p_libvlc_instance = p_libvlc_instance;
 282     p_mi->p_input_thread = NULL;
 283     p_mi->i_refcount = 1;
 284     p_mi->b_own_its_input_thread = true;
 285     vlc_mutex_init( &p_mi->object_lock );
 286     p_mi->p_event_manager = libvlc_event_manager_new( p_mi,
 287             p_libvlc_instance, p_e );
 288     if( libvlc_exception_raised( p_e ) )
 289     {
 290         free( p_mi );
 291         return NULL;
 292     }
 293
 294     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 295             libvlc_MediaPlayerNothingSpecial, p_e );
 296     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 297             libvlc_MediaPlayerOpening, p_e );
 298     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 299             libvlc_MediaPlayerBuffering, p_e );
 300     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 301             libvlc_MediaPlayerPlaying, p_e );
 302     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 303             libvlc_MediaPlayerPaused, p_e );
 304     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 305             libvlc_MediaPlayerStopped, p_e );
 306     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 307             libvlc_MediaPlayerForward, p_e );
 308     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 309             libvlc_MediaPlayerBackward, p_e );
 310     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 311             libvlc_MediaPlayerEndReached, p_e );
 312     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 313             libvlc_MediaPlayerEncounteredError, p_e );
 314
 315     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 316             libvlc_MediaPlayerPositionChanged, p_e );
 317     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 318             libvlc_MediaPlayerTimeChanged, p_e );
 319      libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 320             libvlc_MediaPlayerTitleChanged, p_e );
 321     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 322             libvlc_MediaPlayerSeekableChanged, p_e );
 323     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 324             libvlc_MediaPlayerPausableChanged, p_e );
 325
 326     /* Snapshot initialization */
 327     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 328            libvlc_MediaPlayerSnapshotTaken, p_e );
 329     /* Attach a var callback to the global object to provide the glue between
 330         vout_thread that generates the event and media_player that re-emits it
 331         with its own event manager
 332     */
 333     var_Create( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 334                 VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
 335     var_AddCallback( p_libvlc_instance->p_libvlc_int, "vout-snapshottaken",
 336                      SnapshotTakenCallback, p_mi );
 337
 338     return p_mi;
 339 }
 340
 341 /**************************************************************************
 342  * Create a Media Instance object with a media descriptor.
 343  **************************************************************************/
 344 libvlc_media_player_t *
 345 libvlc_media_player_new_from_media(
 346                                     libvlc_media_t * p_md,
 347                                     libvlc_exception_t *p_e )
 348 {
 349     libvlc_media_player_t * p_mi;
 350     p_mi = libvlc_media_player_new( p_md->p_libvlc_instance, p_e );
 351
 352     if( !p_mi )
 353         return NULL;
 354
 355     libvlc_media_retain( p_md );
 356     p_mi->p_md = p_md;
 357
 358     return p_mi;
 359 }
 360
 361 /**************************************************************************
 362  * Create a new media instance object from an input_thread (Libvlc Internal).
 363  **************************************************************************/
 364 libvlc_media_player_t * libvlc_media_player_new_from_input_thread(
 365                                    struct libvlc_instance_t *p_libvlc_instance,
 366                                    input_thread_t *p_input,
 367                                    libvlc_exception_t *p_e )
 368 {
 369     libvlc_media_player_t * p_mi;
 370
 371     if( !p_input )
 372     {
 373         libvlc_exception_raise( p_e, "invalid input thread" );
 374         return NULL;
 375     }
 376
 377     p_mi = libvlc_media_player_new( p_libvlc_instance, p_e );
 378
 379     if( !p_mi )
 380         return NULL;
 381
 382     p_mi->p_md = libvlc_media_new_from_input_item(
 383                     p_libvlc_instance,
 384                     input_GetItem( p_input ), p_e );
 385
 386     if( !p_mi->p_md )
 387     {
 388         libvlc_media_player_destroy( p_mi );
 389         return NULL;
 390     }
 391
 392     /* will be released in media_player_release() */
 393     vlc_object_hold( p_input );
 394
 395     p_mi->p_input_thread = p_input;
 396     p_mi->b_own_its_input_thread = false;
 397
 398     return p_mi;
 399 }
 400
 401 /**************************************************************************
 402  * Destroy a Media Instance object (libvlc internal)
 403  *
 404  * Warning: No lock held here, but hey, this is internal. Caller must lock.
 405  **************************************************************************/
 406 void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
 407 {
 408     input_thread_t *p_input_thread;
 409     libvlc_exception_t p_e;
 410
 411     libvlc_exception_init( &p_e );
 412
 413     if( !p_mi )
 414         return;
 415
 416         /* Detach Callback from the main libvlc object */
 417     var_DelCallback( p_mi->p_libvlc_instance->p_libvlc_int,
 418                      "vout-snapshottaken", SnapshotTakenCallback, p_mi );
 419
 420     p_input_thread = libvlc_get_input_thread( p_mi, &p_e );
 421
 422     if( libvlc_exception_raised( &p_e ) )
 423     {
 424         libvlc_event_manager_release( p_mi->p_event_manager );
 425         libvlc_exception_clear( &p_e );
 426         free( p_mi );
 427         return; /* no need to worry about no input thread */
 428     }
 429     vlc_mutex_destroy( &p_mi->object_lock );
 430
 431     vlc_object_release( p_input_thread );
 432
 433     libvlc_media_release( p_mi->p_md );
 434
 435     free( p_mi );
 436 }
 437
 438 /**************************************************************************
 439  * Release a Media Instance object.
 440  *
 441  * Function does the locking.
 442  **************************************************************************/
 443 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
 444 {
 445     if( !p_mi )
 446         return;
 447
 448     vlc_mutex_lock( &p_mi->object_lock );
 449
 450     p_mi->i_refcount--;
 451
 452     if( p_mi->i_refcount > 0 )
 453     {
 454         vlc_mutex_unlock( &p_mi->object_lock );
 455         return;
 456     }
 457     vlc_mutex_unlock( &p_mi->object_lock );
 458     vlc_mutex_destroy( &p_mi->object_lock );
 459
 460     release_input_thread( p_mi, true );
 461
 462     libvlc_event_manager_release( p_mi->p_event_manager );
 463
 464     libvlc_media_release( p_mi->p_md );
 465
 466     free( p_mi );
 467 }
 468
 469 /**************************************************************************
 470  * Retain a Media Instance object.
 471  *
 472  * Caller must hold the lock.
 473  **************************************************************************/
 474 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
 475 {
 476     if( !p_mi )
 477         return;
 478
 479     p_mi->i_refcount++;
 480 }
 481
 482 /**************************************************************************
 483  * Set the Media descriptor associated with the instance.
 484  *
 485  * Enter without lock -- function will lock the object.
 486  **************************************************************************/
 487 void libvlc_media_player_set_media(
 488                             libvlc_media_player_t *p_mi,
 489                             libvlc_media_t *p_md,
 490                             libvlc_exception_t *p_e )
 491 {
 492     VLC_UNUSED(p_e);
 493
 494     if( !p_mi )
 495         return;
 496
 497     vlc_mutex_lock( &p_mi->object_lock );
 498
 499     /* FIXME I am not sure if it is a user request or on die(eof/error)
 500      * request here */
 501     release_input_thread( p_mi,
 502                           p_mi->p_input_thread &&
 503                           !p_mi->p_input_thread->b_eof &&
 504                           !p_mi->p_input_thread->b_error );
 505
 506     if( p_mi->p_md )
 507         libvlc_media_set_state( p_mi->p_md, libvlc_NothingSpecial, p_e );
 508
 509     libvlc_media_release( p_mi->p_md );
 510
 511     if( !p_md )
 512     {
 513         p_mi->p_md = NULL;
 514         vlc_mutex_unlock( &p_mi->object_lock );
 515         return; /* It is ok to pass a NULL md */
 516     }
 517
 518     libvlc_media_retain( p_md );
 519     p_mi->p_md = p_md;
 520
 521     /* The policy here is to ignore that we were created using a different
 522      * libvlc_instance, because we don't really care */
 523     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 524
 525     vlc_mutex_unlock( &p_mi->object_lock );
 526 }
 527
 528 /**************************************************************************
 529  * Get the Media descriptor associated with the instance.
 530  **************************************************************************/
 531 libvlc_media_t *
 532 libvlc_media_player_get_media(
 533                             libvlc_media_player_t *p_mi,
 534                             libvlc_exception_t *p_e )
 535 {
 536     VLC_UNUSED(p_e);
 537
 538     if( !p_mi->p_md )
 539         return NULL;
 540
 541     libvlc_media_retain( p_mi->p_md );
 542     return p_mi->p_md;
 543 }
 544
 545 /**************************************************************************
 546  * Get the event Manager.
 547  **************************************************************************/
 548 libvlc_event_manager_t *
 549 libvlc_media_player_event_manager(
 550                             libvlc_media_player_t *p_mi,
 551                             libvlc_exception_t *p_e )
 552 {
 553     VLC_UNUSED(p_e);
 554
 555     return p_mi->p_event_manager;
 556 }
 557
 558 /**************************************************************************
 559  * Trigger a snapshot Taken Event.
 560  *************************************************************************/
 561 static int SnapshotTakenCallback( vlc_object_t *p_this, char const *psz_cmd,
 562                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
 563 {
 564     VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
 565     VLC_UNUSED(p_this) ;
 566
 567     libvlc_media_player_t* p_mi = (libvlc_media_player_t*) p_data ;
 568     libvlc_event_t event ;
 569     event.type = libvlc_MediaPlayerSnapshotTaken ;
 570     event.u.media_player_snapshot_taken.psz_filename = newval.psz_string ;
 571     /* Snapshot psz data is a vlc_variable owned by libvlc object .
 572          Its memmory management is taken care by the obj*/
 573     msg_Dbg( p_this, "about to emit libvlc_snapshot_taken.make psz_str=0x%p"
 574              " (%s)", event.u.media_player_snapshot_taken.psz_filename,
 575              event.u.media_player_snapshot_taken.psz_filename );
 576     libvlc_event_send( p_mi->p_event_manager, &event );
 577
 578     return VLC_SUCCESS;
 579 }
 580
 581 /**************************************************************************
 582  * Tell media player to start playing.
 583  **************************************************************************/
 584 void libvlc_media_player_play( libvlc_media_player_t *p_mi,
 585                                  libvlc_exception_t *p_e )
 586 {
 587     input_thread_t * p_input_thread;
 588
 589     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 590     {
 591         /* A thread already exists, send it a play message */
 592         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 593         vlc_object_release( p_input_thread );
 594         return;
 595     }
 596
 597     /* Ignore previous exception */
 598     libvlc_exception_clear( p_e );
 599
 600     vlc_mutex_lock( &p_mi->object_lock );
 601
 602     if( !p_mi->p_md )
 603     {
 604         libvlc_exception_raise( p_e, "no associated media descriptor" );
 605         vlc_mutex_unlock( &p_mi->object_lock );
 606         return;
 607     }
 608
 609     p_mi->p_input_thread = input_CreateThread(
 610             p_mi->p_libvlc_instance->p_libvlc_int, p_mi->p_md->p_input_item );
 611
 612     if( !p_mi->p_input_thread )
 613     {
 614         vlc_mutex_unlock( &p_mi->object_lock );
 615         return;
 616     }
 617
 618     p_input_thread = p_mi->p_input_thread;
 619
 620     var_Create( p_input_thread, "drawable-agl", VLC_VAR_INTEGER );
 621     if( p_mi->drawable.agl )
 622         var_SetInteger( p_input_thread, "drawable-agl", p_mi->drawable.agl );
 623
 624     var_Create( p_input_thread, "drawable-xid", VLC_VAR_INTEGER );
 625     if( p_mi->drawable.xid )
 626         var_SetInteger( p_input_thread, "drawable-xid", p_mi->drawable.xid );
 627
 628     var_Create( p_input_thread, "drawable-hwnd", VLC_VAR_ADDRESS );
 629     if( p_mi->drawable.hwnd != NULL )
 630     {
 631         vlc_value_t val = { .p_address = p_mi->drawable.hwnd };
 632         var_Set( p_input_thread, "drawable-hwnd", val );
 633     }
 634
 635     var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
 636     var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
 637     var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
 638
 639     vlc_mutex_unlock( &p_mi->object_lock );
 640 }
 641
 642 /**************************************************************************
 643  * Pause.
 644  **************************************************************************/
 645 void libvlc_media_player_pause( libvlc_media_player_t *p_mi,
 646                                   libvlc_exception_t *p_e )
 647 {
 648     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 649
 650     if( !p_input_thread )
 651         return;
 652
 653     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 654
 655     if( state == libvlc_Playing )
 656     {
 657         if( libvlc_media_player_can_pause( p_mi, p_e ) )
 658             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 659         else
 660             libvlc_media_player_stop( p_mi, p_e );
 661     }
 662     else
 663         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 664
 665     vlc_object_release( p_input_thread );
 666 }
 667
 668 /**************************************************************************
 669  * Tells whether the media player is currently playing.
 670  *
 671  * Enter with lock held.
 672  **************************************************************************/
 673 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi,
 674                                      libvlc_exception_t *p_e )
 675 {
 676     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 677     return libvlc_Playing == state;
 678 }
 679
 680
 681 /**************************************************************************
 682  * Stop playing.
 683  **************************************************************************/
 684 void libvlc_media_player_stop( libvlc_media_player_t *p_mi,
 685                                  libvlc_exception_t *p_e )
 686 {
 687     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 688
 689     if( state == libvlc_Playing || state == libvlc_Paused )
 690     {
 691         /* Send a stop notification event only if we are in playing or
 692          * paused states */
 693         libvlc_media_set_state( p_mi->p_md, libvlc_Ended, p_e );
 694
 695         /* Construct and send the event */
 696         libvlc_event_t event;
 697         event.type = libvlc_MediaPlayerStopped;
 698         libvlc_event_send( p_mi->p_event_manager, &event );
 699     }
 700
 701     if( p_mi->b_own_its_input_thread )
 702     {
 703         vlc_mutex_lock( &p_mi->object_lock );
 704         release_input_thread( p_mi, true ); /* This will stop the input thread */
 705         vlc_mutex_unlock( &p_mi->object_lock );
 706     }
 707     else
 708     {
 709         input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 710
 711         if( !p_input_thread )
 712             return;
 713
 714         input_StopThread( p_input_thread, true );
 715         vlc_object_release( p_input_thread );
 716         p_mi->p_input_thread = NULL;
 717     }
 718 }
 719
 720 /**************************************************************************
 721  * set_agl
 722  **************************************************************************/
 723 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 724                                       uint32_t drawable,
 725                                       libvlc_exception_t *p_e )
 726 {
 727     (void) p_e;
 728     p_mi->drawable.agl = drawable;
 729 }
 730
 731 /**************************************************************************
 732  * get_agl
 733  **************************************************************************/
 734 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 735 {
 736     return p_mi->drawable.agl;
 737 }
 738
 739 /**************************************************************************
 740  * set_xwindow
 741  **************************************************************************/
 742 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 743                                       uint32_t drawable,
 744                                       libvlc_exception_t *p_e )
 745 {
 746     (void) p_e;
 747     p_mi->drawable.xid = drawable;
 748 }
 749
 750 /**************************************************************************
 751  * get_xwindow
 752  **************************************************************************/
 753 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 754 {
 755     return p_mi->drawable.xid;
 756 }
 757
 758 /**************************************************************************
 759  * set_hwnd
 760  **************************************************************************/
 761 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 762                                    void *drawable,
 763                                    libvlc_exception_t *p_e )
 764 {
 765     (void) p_e;
 766     p_mi->drawable.hwnd = drawable;
 767 }
 768
 769 /**************************************************************************
 770  * get_hwnd
 771  **************************************************************************/
 772 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 773 {
 774     return p_mi->drawable.hwnd;
 775 }
 776
 777 /**************************************************************************
 778  * Set Drawable
 779  **************************************************************************/
 780 void libvlc_media_player_set_drawable( libvlc_media_player_t *p_mi,
 781                                        libvlc_drawable_t drawable,
 782                                        libvlc_exception_t *p_e )
 783 {
 784 #ifdef WIN32
 785     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 786         p_mi->drawable.hwnd = (HWND)drawable;
 787     else
 788         libvlc_exception_raise(p_e, "Operation not supported");
 789 #elif defined(__APPLE__)
 790     p_mi->drawable.agl = drawable;
 791     (void) p_e;
 792 #else
 793     p_mi->drawable.xid = drawable;
 794     (void) p_e;
 795 #endif
 796 }
 797
 798 /**************************************************************************
 799  * Get Drawable
 800  **************************************************************************/
 801 libvlc_drawable_t
 802 libvlc_media_player_get_drawable ( libvlc_media_player_t *p_mi,
 803                                    libvlc_exception_t *p_e )
 804 {
 805     VLC_UNUSED(p_e);
 806
 807 #ifdef WIN32
 808     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 809         return (libvlc_drawable_t)p_mi->drawable.hwnd;
 810     else
 811         return 0;
 812 #elif defined(__APPLE__)
 813     return p_mi->drawable.agl;
 814 #else
 815     return p_mi->drawable.xid;
 816 #endif
 817 }
 818
 819 /**************************************************************************
 820  * Getters for stream information
 821  **************************************************************************/
 822 libvlc_time_t libvlc_media_player_get_length(
 823                              libvlc_media_player_t *p_mi,
 824                              libvlc_exception_t *p_e )
 825 {
 826     input_thread_t *p_input_thread;
 827     vlc_value_t val;
 828
 829     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 830     if( !p_input_thread )
 831         return -1;
 832
 833     var_Get( p_input_thread, "length", &val );
 834     vlc_object_release( p_input_thread );
 835
 836     return (val.i_time+500LL)/1000LL;
 837 }
 838
 839 libvlc_time_t libvlc_media_player_get_time(
 840                                    libvlc_media_player_t *p_mi,
 841                                    libvlc_exception_t *p_e )
 842 {
 843     input_thread_t *p_input_thread;
 844     vlc_value_t val;
 845
 846     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 847     if( !p_input_thread )
 848         return -1;
 849
 850     var_Get( p_input_thread , "time", &val );
 851     vlc_object_release( p_input_thread );
 852     return (val.i_time+500LL)/1000LL;
 853 }
 854
 855 void libvlc_media_player_set_time(
 856                                  libvlc_media_player_t *p_mi,
 857                                  libvlc_time_t time,
 858                                  libvlc_exception_t *p_e )
 859 {
 860     input_thread_t *p_input_thread;
 861     vlc_value_t value;
 862
 863     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 864     if( !p_input_thread )
 865         return;
 866
 867     value.i_time = time*1000LL;
 868     var_Set( p_input_thread, "time", value );
 869     vlc_object_release( p_input_thread );
 870 }
 871
 872 void libvlc_media_player_set_position(
 873                                 libvlc_media_player_t *p_mi,
 874                                 float position,
 875                                 libvlc_exception_t *p_e )
 876 {
 877     input_thread_t *p_input_thread;
 878     vlc_value_t val;
 879     val.f_float = position;
 880
 881     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 882     if( !p_input_thread )
 883         return;
 884
 885     var_Set( p_input_thread, "position", val );
 886     vlc_object_release( p_input_thread );
 887 }
 888
 889 float libvlc_media_player_get_position(
 890                                  libvlc_media_player_t *p_mi,
 891                                  libvlc_exception_t *p_e )
 892 {
 893     input_thread_t *p_input_thread;
 894     vlc_value_t val;
 895
 896     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 897     if( !p_input_thread )
 898         return -1.0;
 899
 900     var_Get( p_input_thread, "position", &val );
 901     vlc_object_release( p_input_thread );
 902
 903     return val.f_float;
 904 }
 905
 906 void libvlc_media_player_set_chapter(
 907                                  libvlc_media_player_t *p_mi,
 908                                  int chapter,
 909                                  libvlc_exception_t *p_e )
 910 {
 911     input_thread_t *p_input_thread;
 912     vlc_value_t val;
 913     val.i_int = chapter;
 914
 915     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 916     if( !p_input_thread )
 917         return;
 918
 919     var_Set( p_input_thread, "chapter", val );
 920     vlc_object_release( p_input_thread );
 921 }
 922
 923 int libvlc_media_player_get_chapter(
 924                                  libvlc_media_player_t *p_mi,
 925                                  libvlc_exception_t *p_e )
 926 {
 927     input_thread_t *p_input_thread;
 928     vlc_value_t val;
 929
 930     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 931     if( !p_input_thread )
 932         return -1;
 933
 934     var_Get( p_input_thread, "chapter", &val );
 935     vlc_object_release( p_input_thread );
 936
 937     return val.i_int;
 938 }
 939
 940 int libvlc_media_player_get_chapter_count(
 941                                  libvlc_media_player_t *p_mi,
 942                                  libvlc_exception_t *p_e )
 943 {
 944     input_thread_t *p_input_thread;
 945     vlc_value_t val;
 946
 947     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 948     if( !p_input_thread )
 949         return -1;
 950
 951     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 952     vlc_object_release( p_input_thread );
 953
 954     return val.i_int;
 955 }
 956
 957 int libvlc_media_player_get_chapter_count_for_title(
 958                                  libvlc_media_player_t *p_mi,
 959                                  int i_title,
 960                                  libvlc_exception_t *p_e )
 961 {
 962     input_thread_t *p_input_thread;
 963     vlc_value_t val;
 964
 965     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 966     if( !p_input_thread )
 967         return -1;
 968
 969     char *psz_name;
 970     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 971     {
 972         vlc_object_release( p_input_thread );
 973         return -1;
 974     }
 975     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 976     vlc_object_release( p_input_thread );
 977     free( psz_name );
 978
 979     return val.i_int;
 980 }
 981
 982 void libvlc_media_player_set_title(
 983                                  libvlc_media_player_t *p_mi,
 984                                  int i_title,
 985                                  libvlc_exception_t *p_e )
 986 {
 987     input_thread_t *p_input_thread;
 988     vlc_value_t val;
 989     val.i_int = i_title;
 990
 991     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 992     if( !p_input_thread )
 993         return;
 994
 995     var_Set( p_input_thread, "title", val );
 996     vlc_object_release( p_input_thread );
 997
 998     //send event
 999     libvlc_event_t event;
1000     event.type = libvlc_MediaPlayerTitleChanged;
1001     event.u.media_player_title_changed.new_title = i_title;
1002     libvlc_event_send( p_mi->p_event_manager, &event );
1003 }
1004
1005 int libvlc_media_player_get_title(
1006                                  libvlc_media_player_t *p_mi,
1007                                  libvlc_exception_t *p_e )
1008 {
1009     input_thread_t *p_input_thread;
1010     vlc_value_t val;
1011
1012     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1013     if( !p_input_thread )
1014         return -1;
1015
1016     var_Get( p_input_thread, "title", &val );
1017     vlc_object_release( p_input_thread );
1018
1019     return val.i_int;
1020 }
1021
1022 int libvlc_media_player_get_title_count(
1023                                  libvlc_media_player_t *p_mi,
1024                                  libvlc_exception_t *p_e )
1025 {
1026     input_thread_t *p_input_thread;
1027     vlc_value_t val;
1028
1029     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1030     if( !p_input_thread )
1031         return -1;
1032
1033     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1034     vlc_object_release( p_input_thread );
1035
1036     return val.i_int;
1037 }
1038
1039 void libvlc_media_player_next_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                             "next-chapter":"next-title", val );
1054
1055     vlc_object_release( p_input_thread );
1056 }
1057
1058 void libvlc_media_player_previous_chapter(
1059                                  libvlc_media_player_t *p_mi,
1060                                  libvlc_exception_t *p_e )
1061 {
1062     input_thread_t *p_input_thread;
1063
1064     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1065     if( !p_input_thread )
1066         return;
1067
1068     int i_type = var_Type( p_input_thread, "next-chapter" );
1069     vlc_value_t val;
1070     val.b_bool = true;
1071     var_Set( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1072                             "prev-chapter":"prev-title", val );
1073
1074     vlc_object_release( p_input_thread );
1075 }
1076
1077 float libvlc_media_player_get_fps(
1078                                  libvlc_media_player_t *p_mi,
1079                                  libvlc_exception_t *p_e)
1080 {
1081     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1082     double f_fps = 0.0;
1083
1084     if( p_input_thread )
1085     {
1086         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1087             f_fps = 0.0;
1088         vlc_object_release( p_input_thread );
1089     }
1090     return f_fps;
1091 }
1092
1093 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi,
1094                                      libvlc_exception_t *p_e)
1095 {
1096     input_thread_t *p_input_thread =
1097                             libvlc_get_input_thread ( p_mi, p_e);
1098     if ( !p_input_thread )
1099         return false;
1100
1101     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
1102     {
1103         vlc_object_release( p_input_thread );
1104         return true;
1105     }
1106     vlc_object_release( p_input_thread );
1107     return false;
1108 }
1109
1110 void libvlc_media_player_set_rate(
1111                                  libvlc_media_player_t *p_mi,
1112                                  float rate,
1113                                  libvlc_exception_t *p_e )
1114 {
1115     input_thread_t *p_input_thread;
1116     vlc_value_t val;
1117     bool b_can_rewind;
1118
1119     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1120     if( !p_input_thread )
1121         return;
1122
1123     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1124     if( (rate < 0.0) && !b_can_rewind )
1125     {
1126         vlc_object_release( p_input_thread );
1127         libvlc_exception_raise( p_e, "Rate value is invalid" );
1128         return;
1129     }
1130
1131     val.i_int = 1000.0f/rate;
1132     var_Set( p_input_thread, "rate", val );
1133     vlc_object_release( p_input_thread );
1134 }
1135
1136 float libvlc_media_player_get_rate(
1137                                  libvlc_media_player_t *p_mi,
1138                                  libvlc_exception_t *p_e )
1139 {
1140     input_thread_t *p_input_thread;
1141     vlc_value_t val;
1142     bool b_can_rewind;
1143
1144     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1145     if( !p_input_thread )
1146         return 0.0;  /* rate < 0 indicates rewind */
1147
1148     var_Get( p_input_thread, "rate", &val );
1149     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1150     if( (val.i_int < 0) && !b_can_rewind )
1151     {
1152         libvlc_exception_raise( p_e, "invalid rate" );
1153         return 0.0;
1154     }
1155     vlc_object_release( p_input_thread );
1156
1157     return (float)1000.0f/val.i_int;
1158 }
1159
1160 libvlc_state_t libvlc_media_player_get_state(
1161                                  libvlc_media_player_t *p_mi,
1162                                  libvlc_exception_t *p_e )
1163 {
1164     input_thread_t *p_input_thread;
1165     libvlc_state_t state = libvlc_Ended;
1166     vlc_value_t val;
1167
1168     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1169     if( !p_input_thread )
1170     {
1171         /* We do return the right value, no need to throw an exception */
1172         if( libvlc_exception_raised( p_e ) )
1173             libvlc_exception_clear( p_e );
1174         return state;
1175     }
1176
1177     var_Get( p_input_thread, "state", &val );
1178     state = vlc_to_libvlc_state(val.i_int);
1179
1180     if( state == libvlc_Playing )
1181     {
1182         float caching;
1183         caching = var_GetFloat( p_input_thread, "cache" );
1184         if( caching > 0.0 && caching < 1.0 )
1185             state = libvlc_Buffering;
1186     }
1187     vlc_object_release( p_input_thread );
1188     return state;
1189 }
1190
1191 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi,
1192                                        libvlc_exception_t *p_e )
1193 {
1194     input_thread_t *p_input_thread;
1195     vlc_value_t val;
1196
1197     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1198     if ( !p_input_thread )
1199     {
1200         /* We do return the right value, no need to throw an exception */
1201         if( libvlc_exception_raised( p_e ) )
1202             libvlc_exception_clear( p_e );
1203         return false;
1204     }
1205     var_Get( p_input_thread, "can-seek", &val );
1206     vlc_object_release( p_input_thread );
1207
1208     return val.b_bool;
1209 }
1210
1211 /* internal function, used by audio, video */
1212 libvlc_track_description_t *
1213         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1214                                       const char *psz_variable,
1215                                       libvlc_exception_t *p_e )
1216 {
1217     input_thread_t *p_input = libvlc_get_input_thread( p_mi, p_e );
1218
1219     if( !p_input )
1220         return NULL;
1221
1222     vlc_value_t val_list, text_list;
1223     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1224
1225     if( val_list.p_list->i_count <= 0 ) /* no tracks */
1226         return NULL;
1227
1228     libvlc_track_description_t *p_track_description, *p_actual, *p_previous;
1229     p_track_description = ( libvlc_track_description_t * )
1230         malloc( sizeof( libvlc_track_description_t ) );
1231     if ( !p_track_description )
1232     {
1233         var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1234                     &val_list, &text_list);
1235         vlc_object_release( p_input );
1236         libvlc_exception_raise( p_e, "no enough memory" );
1237         return NULL;
1238     }
1239     p_actual = p_track_description;
1240     p_previous = NULL;
1241     for( int i = 0; i < val_list.p_list->i_count; i++ )
1242     {
1243         if( !p_actual )
1244         {
1245             p_actual = ( libvlc_track_description_t * )
1246                 malloc( sizeof( libvlc_track_description_t ) );
1247             if ( !p_actual )
1248             {
1249                 libvlc_track_description_release( p_track_description );
1250                 var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1251                             &val_list, &text_list);
1252                 vlc_object_release( p_input );
1253                 libvlc_exception_raise( p_e, "no enough memory" );
1254                 return NULL;
1255             }
1256         }
1257         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1258         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1259         p_actual->p_next = NULL;
1260         if( p_previous )
1261             p_previous->p_next = p_actual;
1262         p_previous = p_actual;
1263         p_actual =  NULL;
1264     }
1265     var_Change( p_input, psz_variable, VLC_VAR_FREELIST, &val_list, &text_list);
1266     vlc_object_release( p_input );
1267
1268     return p_track_description;
1269 }
1270
1271 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1272 {
1273     libvlc_track_description_t *p_actual, *p_before;
1274     p_actual = p_td;
1275
1276     while ( p_actual )
1277     {
1278         free( p_actual->psz_name );
1279         p_before = p_actual;
1280         p_actual = p_before->p_next;
1281         free( p_before );
1282     }
1283 }
1284
1285 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi,
1286                                      libvlc_exception_t *p_e )
1287 {
1288     input_thread_t *p_input_thread;
1289     vlc_value_t val;
1290
1291     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1292     if ( !p_input_thread )
1293     {
1294         /* We do return the right value, no need to throw an exception */
1295         if( libvlc_exception_raised( p_e ) )
1296             libvlc_exception_clear( p_e );
1297         return false;
1298     }
1299     var_Get( p_input_thread, "can-pause", &val );
1300     vlc_object_release( p_input_thread );
1301
1302     return val.b_bool;
1303 }