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     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 677
 678     if( !p_input_thread )
 679     {
 680         /* We do return the right value, no need to throw an exception */
 681         if( libvlc_exception_raised( p_e ) )
 682             libvlc_exception_clear( p_e );
 683         return 0;
 684     }
 685
 686     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 687
 688     vlc_object_release( p_input_thread );
 689
 690     if( state == libvlc_Playing )
 691     {
 692         return 1;
 693     }
 694     return 0;
 695 }
 696
 697
 698 /**************************************************************************
 699  * Stop playing.
 700  **************************************************************************/
 701 void libvlc_media_player_stop( libvlc_media_player_t *p_mi,
 702                                  libvlc_exception_t *p_e )
 703 {
 704     libvlc_state_t state = libvlc_media_player_get_state( p_mi, p_e );
 705
 706     if( state == libvlc_Playing || state == libvlc_Paused )
 707     {
 708         /* Send a stop notification event only if we are in playing or
 709          * paused states */
 710         libvlc_media_set_state( p_mi->p_md, libvlc_Ended, p_e );
 711
 712         /* Construct and send the event */
 713         libvlc_event_t event;
 714         event.type = libvlc_MediaPlayerStopped;
 715         libvlc_event_send( p_mi->p_event_manager, &event );
 716     }
 717
 718     if( p_mi->b_own_its_input_thread )
 719     {
 720         vlc_mutex_lock( &p_mi->object_lock );
 721         release_input_thread( p_mi, true ); /* This will stop the input thread */
 722         vlc_mutex_unlock( &p_mi->object_lock );
 723     }
 724     else
 725     {
 726         input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 727
 728         if( !p_input_thread )
 729             return;
 730
 731         input_StopThread( p_input_thread, true );
 732         vlc_object_release( p_input_thread );
 733         p_mi->p_input_thread = NULL;
 734     }
 735 }
 736
 737 /**************************************************************************
 738  * set_agl
 739  **************************************************************************/
 740 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
 741                                       uint32_t drawable,
 742                                       libvlc_exception_t *p_e )
 743 {
 744     (void) p_e;
 745     p_mi->drawable.agl = drawable;
 746 }
 747
 748 /**************************************************************************
 749  * get_agl
 750  **************************************************************************/
 751 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
 752 {
 753     return p_mi->drawable.agl;
 754 }
 755
 756 /**************************************************************************
 757  * set_xwindow
 758  **************************************************************************/
 759 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
 760                                       uint32_t drawable,
 761                                       libvlc_exception_t *p_e )
 762 {
 763     (void) p_e;
 764     p_mi->drawable.xid = drawable;
 765 }
 766
 767 /**************************************************************************
 768  * get_xwindow
 769  **************************************************************************/
 770 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
 771 {
 772     return p_mi->drawable.xid;
 773 }
 774
 775 /**************************************************************************
 776  * set_hwnd
 777  **************************************************************************/
 778 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
 779                                    void *drawable,
 780                                    libvlc_exception_t *p_e )
 781 {
 782     (void) p_e;
 783     p_mi->drawable.hwnd = drawable;
 784 }
 785
 786 /**************************************************************************
 787  * get_hwnd
 788  **************************************************************************/
 789 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
 790 {
 791     return p_mi->drawable.hwnd;
 792 }
 793
 794 /**************************************************************************
 795  * Set Drawable
 796  **************************************************************************/
 797 void libvlc_media_player_set_drawable( libvlc_media_player_t *p_mi,
 798                                        libvlc_drawable_t drawable,
 799                                        libvlc_exception_t *p_e )
 800 {
 801 #ifdef WIN32
 802     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 803         p_mi->drawable.hwnd = (HWND)drawable;
 804     else
 805         libvlc_exception_raise(p_e, "Operation not supported");
 806 #elif defined(__APPLE__)
 807     p_mi->drawable.agl = drawable;
 808 #else
 809     p_mi->drawable.xid = drawable;
 810 #endif
 811 }
 812
 813 /**************************************************************************
 814  * Get Drawable
 815  **************************************************************************/
 816 libvlc_drawable_t
 817 libvlc_media_player_get_drawable ( libvlc_media_player_t *p_mi,
 818                                    libvlc_exception_t *p_e )
 819 {
 820     VLC_UNUSED(p_e);
 821
 822 #ifdef WIN32
 823     if (sizeof (HWND) <= sizeof (libvlc_drawable_t))
 824         return (libvlc_drawable_t)p_mi->drawable.hwnd;
 825     else
 826         return 0;
 827 #elif defined(__APPLE__)
 828     return p_mi->drawable.agl;
 829 #else
 830     return p_mi->drawable.xid;
 831 #endif
 832 }
 833
 834 /**************************************************************************
 835  * Getters for stream information
 836  **************************************************************************/
 837 libvlc_time_t libvlc_media_player_get_length(
 838                              libvlc_media_player_t *p_mi,
 839                              libvlc_exception_t *p_e )
 840 {
 841     input_thread_t *p_input_thread;
 842     vlc_value_t val;
 843
 844     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 845     if( !p_input_thread )
 846         return -1;
 847
 848     var_Get( p_input_thread, "length", &val );
 849     vlc_object_release( p_input_thread );
 850
 851     return (val.i_time+500LL)/1000LL;
 852 }
 853
 854 libvlc_time_t libvlc_media_player_get_time(
 855                                    libvlc_media_player_t *p_mi,
 856                                    libvlc_exception_t *p_e )
 857 {
 858     input_thread_t *p_input_thread;
 859     vlc_value_t val;
 860
 861     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 862     if( !p_input_thread )
 863         return -1;
 864
 865     var_Get( p_input_thread , "time", &val );
 866     vlc_object_release( p_input_thread );
 867     return (val.i_time+500LL)/1000LL;
 868 }
 869
 870 void libvlc_media_player_set_time(
 871                                  libvlc_media_player_t *p_mi,
 872                                  libvlc_time_t time,
 873                                  libvlc_exception_t *p_e )
 874 {
 875     input_thread_t *p_input_thread;
 876     vlc_value_t value;
 877
 878     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 879     if( !p_input_thread )
 880         return;
 881
 882     value.i_time = time*1000LL;
 883     var_Set( p_input_thread, "time", value );
 884     vlc_object_release( p_input_thread );
 885 }
 886
 887 void libvlc_media_player_set_position(
 888                                 libvlc_media_player_t *p_mi,
 889                                 float position,
 890                                 libvlc_exception_t *p_e )
 891 {
 892     input_thread_t *p_input_thread;
 893     vlc_value_t val;
 894     val.f_float = position;
 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, "position", val );
 901     vlc_object_release( p_input_thread );
 902 }
 903
 904 float libvlc_media_player_get_position(
 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 -1.0;
 914
 915     var_Get( p_input_thread, "position", &val );
 916     vlc_object_release( p_input_thread );
 917
 918     return val.f_float;
 919 }
 920
 921 void libvlc_media_player_set_chapter(
 922                                  libvlc_media_player_t *p_mi,
 923                                  int chapter,
 924                                  libvlc_exception_t *p_e )
 925 {
 926     input_thread_t *p_input_thread;
 927     vlc_value_t val;
 928     val.i_int = chapter;
 929
 930     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 931     if( !p_input_thread )
 932         return;
 933
 934     var_Set( p_input_thread, "chapter", val );
 935     vlc_object_release( p_input_thread );
 936 }
 937
 938 int libvlc_media_player_get_chapter(
 939                                  libvlc_media_player_t *p_mi,
 940                                  libvlc_exception_t *p_e )
 941 {
 942     input_thread_t *p_input_thread;
 943     vlc_value_t val;
 944
 945     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 946     if( !p_input_thread )
 947         return -1;
 948
 949     var_Get( p_input_thread, "chapter", &val );
 950     vlc_object_release( p_input_thread );
 951
 952     return val.i_int;
 953 }
 954
 955 int libvlc_media_player_get_chapter_count(
 956                                  libvlc_media_player_t *p_mi,
 957                                  libvlc_exception_t *p_e )
 958 {
 959     input_thread_t *p_input_thread;
 960     vlc_value_t val;
 961
 962     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 963     if( !p_input_thread )
 964         return -1;
 965
 966     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 967     vlc_object_release( p_input_thread );
 968
 969     return val.i_int;
 970 }
 971
 972 int libvlc_media_player_get_chapter_count_for_title(
 973                                  libvlc_media_player_t *p_mi,
 974                                  int i_title,
 975                                  libvlc_exception_t *p_e )
 976 {
 977     input_thread_t *p_input_thread;
 978     vlc_value_t val;
 979
 980     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 981     if( !p_input_thread )
 982         return -1;
 983
 984     char *psz_name;
 985     if( asprintf( &psz_name,  "title %2i", i_title ) == -1 )
 986     {
 987         vlc_object_release( p_input_thread );
 988         return -1;
 989     }
 990     var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
 991     vlc_object_release( p_input_thread );
 992     free( psz_name );
 993
 994     return val.i_int;
 995 }
 996
 997 void libvlc_media_player_set_title(
 998                                  libvlc_media_player_t *p_mi,
 999                                  int i_title,
1000                                  libvlc_exception_t *p_e )
1001 {
1002     input_thread_t *p_input_thread;
1003     vlc_value_t val;
1004     val.i_int = i_title;
1005
1006     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1007     if( !p_input_thread )
1008         return;
1009
1010     var_Set( p_input_thread, "title", val );
1011     vlc_object_release( p_input_thread );
1012
1013     //send event
1014     libvlc_event_t event;
1015     event.type = libvlc_MediaPlayerTitleChanged;
1016     event.u.media_player_title_changed.new_title = i_title;
1017     libvlc_event_send( p_mi->p_event_manager, &event );
1018 }
1019
1020 int libvlc_media_player_get_title(
1021                                  libvlc_media_player_t *p_mi,
1022                                  libvlc_exception_t *p_e )
1023 {
1024     input_thread_t *p_input_thread;
1025     vlc_value_t val;
1026
1027     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1028     if( !p_input_thread )
1029         return -1;
1030
1031     var_Get( p_input_thread, "title", &val );
1032     vlc_object_release( p_input_thread );
1033
1034     return val.i_int;
1035 }
1036
1037 int libvlc_media_player_get_title_count(
1038                                  libvlc_media_player_t *p_mi,
1039                                  libvlc_exception_t *p_e )
1040 {
1041     input_thread_t *p_input_thread;
1042     vlc_value_t val;
1043
1044     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1045     if( !p_input_thread )
1046         return -1;
1047
1048     var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1049     vlc_object_release( p_input_thread );
1050
1051     return val.i_int;
1052 }
1053
1054 void libvlc_media_player_next_chapter(
1055                                  libvlc_media_player_t *p_mi,
1056                                  libvlc_exception_t *p_e )
1057 {
1058     input_thread_t *p_input_thread;
1059
1060     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1061     if( !p_input_thread )
1062         return;
1063
1064     int i_type = var_Type( p_input_thread, "next-chapter" );
1065     vlc_value_t val;
1066     val.b_bool = true;
1067     var_Set( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1068                             "next-chapter":"next-title", val );
1069
1070     vlc_object_release( p_input_thread );
1071 }
1072
1073 void libvlc_media_player_previous_chapter(
1074                                  libvlc_media_player_t *p_mi,
1075                                  libvlc_exception_t *p_e )
1076 {
1077     input_thread_t *p_input_thread;
1078
1079     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
1080     if( !p_input_thread )
1081         return;
1082
1083     int i_type = var_Type( p_input_thread, "next-chapter" );
1084     vlc_value_t val;
1085     val.b_bool = true;
1086     var_Set( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1087                             "prev-chapter":"prev-title", val );
1088
1089     vlc_object_release( p_input_thread );
1090 }
1091
1092 float libvlc_media_player_get_fps(
1093                                  libvlc_media_player_t *p_mi,
1094                                  libvlc_exception_t *p_e)
1095 {
1096     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1097     double f_fps = 0.0;
1098
1099     if( p_input_thread )
1100     {
1101         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1102             f_fps = 0.0;
1103         vlc_object_release( p_input_thread );
1104     }
1105     return f_fps;
1106 }
1107
1108 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi,
1109                                      libvlc_exception_t *p_e)
1110 {
1111     input_thread_t *p_input_thread =
1112                             libvlc_get_input_thread ( p_mi, p_e);
1113     if ( !p_input_thread )
1114         return false;
1115
1116     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
1117     {
1118         vlc_object_release( p_input_thread );
1119         return true;
1120     }
1121     vlc_object_release( p_input_thread );
1122     return false;
1123 }
1124
1125 void libvlc_media_player_set_rate(
1126                                  libvlc_media_player_t *p_mi,
1127                                  float rate,
1128                                  libvlc_exception_t *p_e )
1129 {
1130     input_thread_t *p_input_thread;
1131     vlc_value_t val;
1132     bool b_can_rewind;
1133
1134     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1135     if( !p_input_thread )
1136         return;
1137
1138     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1139     if( (rate < 0.0) && !b_can_rewind )
1140     {
1141         vlc_object_release( p_input_thread );
1142         libvlc_exception_raise( p_e, "Rate value is invalid" );
1143         return;
1144     }
1145
1146     val.i_int = 1000.0f/rate;
1147     var_Set( p_input_thread, "rate", val );
1148     vlc_object_release( p_input_thread );
1149 }
1150
1151 float libvlc_media_player_get_rate(
1152                                  libvlc_media_player_t *p_mi,
1153                                  libvlc_exception_t *p_e )
1154 {
1155     input_thread_t *p_input_thread;
1156     vlc_value_t val;
1157     bool b_can_rewind;
1158
1159     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1160     if( !p_input_thread )
1161         return 0.0;  /* rate < 0 indicates rewind */
1162
1163     var_Get( p_input_thread, "rate", &val );
1164     b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1165     if( (val.i_int < 0) && !b_can_rewind )
1166     {
1167         libvlc_exception_raise( p_e, "invalid rate" );
1168         return 0.0;
1169     }
1170     vlc_object_release( p_input_thread );
1171
1172     return (float)1000.0f/val.i_int;
1173 }
1174
1175 libvlc_state_t libvlc_media_player_get_state(
1176                                  libvlc_media_player_t *p_mi,
1177                                  libvlc_exception_t *p_e )
1178 {
1179     input_thread_t *p_input_thread;
1180     libvlc_state_t state = libvlc_Ended;
1181     vlc_value_t val;
1182
1183     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1184     if( !p_input_thread )
1185     {
1186         /* We do return the right value, no need to throw an exception */
1187         if( libvlc_exception_raised( p_e ) )
1188             libvlc_exception_clear( p_e );
1189         return state;
1190     }
1191
1192     var_Get( p_input_thread, "state", &val );
1193     state = vlc_to_libvlc_state(val.i_int);
1194
1195     if( state == PLAYING_S )
1196     {
1197         float caching;
1198         caching = var_GetFloat( p_input_thread, "cache" );
1199         if( caching > 0.0 && caching < 1.0 )
1200             state = libvlc_Buffering;
1201     }
1202     vlc_object_release( p_input_thread );
1203     return state;
1204 }
1205
1206 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi,
1207                                        libvlc_exception_t *p_e )
1208 {
1209     input_thread_t *p_input_thread;
1210     vlc_value_t val;
1211
1212     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1213     if ( !p_input_thread )
1214     {
1215         /* We do return the right value, no need to throw an exception */
1216         if( libvlc_exception_raised( p_e ) )
1217             libvlc_exception_clear( p_e );
1218         return false;
1219     }
1220     var_Get( p_input_thread, "can-seek", &val );
1221     vlc_object_release( p_input_thread );
1222
1223     return val.b_bool;
1224 }
1225
1226 /* internal function, used by audio, video */
1227 libvlc_track_description_t *
1228         libvlc_get_track_description( libvlc_media_player_t *p_mi,
1229                                       const char *psz_variable,
1230                                       libvlc_exception_t *p_e )
1231 {
1232     input_thread_t *p_input = libvlc_get_input_thread( p_mi, p_e );
1233
1234     if( !p_input )
1235         return NULL;
1236
1237     vlc_value_t val_list, text_list;
1238     var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1239
1240     if( val_list.p_list->i_count <= 0 ) /* no tracks */
1241         return NULL;
1242
1243     libvlc_track_description_t *p_track_description, *p_actual, *p_previous;
1244     p_track_description = ( libvlc_track_description_t * )
1245         malloc( sizeof( libvlc_track_description_t ) );
1246     if ( !p_track_description )
1247     {
1248         var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1249                     &val_list, &text_list);
1250         vlc_object_release( p_input );
1251         libvlc_exception_raise( p_e, "no enough memory" );
1252         return NULL;
1253     }
1254     p_actual = p_track_description;
1255     p_previous = NULL;
1256     for( int i = 0; i < val_list.p_list->i_count; i++ )
1257     {
1258         if( !p_actual )
1259         {
1260             p_actual = ( libvlc_track_description_t * )
1261                 malloc( sizeof( libvlc_track_description_t ) );
1262             if ( !p_actual )
1263             {
1264                 libvlc_track_description_release( p_track_description );
1265                 var_Change( p_input, psz_variable, VLC_VAR_FREELIST,
1266                             &val_list, &text_list);
1267                 vlc_object_release( p_input );
1268                 libvlc_exception_raise( p_e, "no enough memory" );
1269                 return NULL;
1270             }
1271         }
1272         p_actual->i_id = val_list.p_list->p_values[i].i_int;
1273         p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1274         p_actual->p_next = NULL;
1275         if( p_previous )
1276             p_previous->p_next = p_actual;
1277         p_previous = p_actual;
1278         p_actual =  NULL;
1279     }
1280     var_Change( p_input, psz_variable, VLC_VAR_FREELIST, &val_list, &text_list);
1281     vlc_object_release( p_input );
1282
1283     return p_track_description;
1284 }
1285
1286 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1287 {
1288     libvlc_track_description_t *p_actual, *p_before;
1289     p_actual = p_td;
1290
1291     while ( p_actual )
1292     {
1293         free( p_actual->psz_name );
1294         p_before = p_actual;
1295         p_actual = p_before->p_next;
1296         free( p_before );
1297     }
1298 }
1299
1300 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi,
1301                                      libvlc_exception_t *p_e )
1302 {
1303     input_thread_t *p_input_thread;
1304     vlc_value_t val;
1305
1306     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
1307     if ( !p_input_thread )
1308     {
1309         /* We do return the right value, no need to throw an exception */
1310         if( libvlc_exception_raised( p_e ) )
1311             libvlc_exception_clear( p_e );
1312         return false;
1313     }
1314     var_Get( p_input_thread, "can-pause", &val );
1315     vlc_object_release( p_input_thread );
1316
1317     return val.b_bool;
1318 }