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

   1 /*****************************************************************************
   2  * media_instance.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 "libvlc.h"
  30
  31 static int
  32 input_state_changed( vlc_object_t * p_this, char const * psz_cmd,
  33                      vlc_value_t oldval, vlc_value_t newval,
  34                      void * p_userdata );
  35 static int
  36 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
  37                         vlc_value_t oldval, vlc_value_t newval,
  38                         void * p_userdata );
  39 static int
  40 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
  41                         vlc_value_t oldval, vlc_value_t newval,
  42                         void * p_userdata );
  43 static int
  44 input_position_changed( vlc_object_t * p_this, char const * psz_cmd,
  45                      vlc_value_t oldval, vlc_value_t newval,
  46                      void * p_userdata );
  47 static int
  48 input_time_changed( vlc_object_t * p_this, char const * psz_cmd,
  49                      vlc_value_t oldval, vlc_value_t newval,
  50                      void * p_userdata );
  51
  52 static const libvlc_state_t vlc_to_libvlc_state_array[] =
  53 {
  54     [INIT_S]        = libvlc_Opening,
  55     [OPENING_S]     = libvlc_Opening,
  56     [BUFFERING_S]   = libvlc_Buffering,
  57     [PLAYING_S]     = libvlc_Playing,
  58     [PAUSE_S]       = libvlc_Paused,
  59     [END_S]         = libvlc_Ended,
  60     [ERROR_S]       = libvlc_Error,
  61 };
  62 static inline libvlc_state_t vlc_to_libvlc_state( int vlc_state )
  63 {
  64     if( vlc_state < 0 || vlc_state > 6 )
  65         return libvlc_Stopped;
  66
  67     return vlc_to_libvlc_state_array[vlc_state];
  68 }
  69
  70 /*
  71  * Release the associated input thread
  72  *
  73  * Object lock is NOT held.
  74  */
  75 static void release_input_thread( libvlc_media_instance_t *p_mi )
  76 {
  77     input_thread_t * p_input_thread;
  78
  79     if( !p_mi || !p_mi->p_input_thread )
  80         return;
  81
  82     p_input_thread = p_mi->p_input_thread;
  83
  84     /* No one is tracking this input_thread appart us. Destroy it */
  85     if( p_mi->b_own_its_input_thread )
  86     {
  87         var_DelCallback( p_input_thread, "state", input_state_changed, p_mi );
  88         var_DelCallback( p_input_thread, "seekable", input_seekable_changed, p_mi );
  89         var_DelCallback( p_input_thread, "pausable", input_pausable_changed, p_mi );
  90         var_DelCallback( p_input_thread, "intf-change", input_position_changed, p_mi );
  91         var_DelCallback( p_input_thread, "intf-change", input_time_changed, p_mi );
  92
  93         /* We owned this one */
  94         input_StopThread( p_input_thread );
  95
  96         var_Destroy( p_input_thread, "drawable" );
  97     }
  98
  99     vlc_object_release( p_input_thread );
 100
 101     p_mi->p_input_thread = NULL;
 102 }
 103
 104 /*
 105  * Retrieve the input thread. Be sure to release the object
 106  * once you are done with it. (libvlc Internal)
 107  *
 108  * Object lock is held.
 109  */
 110 input_thread_t *libvlc_get_input_thread( libvlc_media_instance_t *p_mi,
 111                                          libvlc_exception_t *p_e )
 112 {
 113     input_thread_t *p_input_thread;
 114
 115     if( !p_mi ) RAISENULL( "Media Instance is NULL" );
 116
 117     vlc_mutex_lock( &p_mi->object_lock );
 118
 119     if( !p_mi->p_input_thread )
 120     {
 121         vlc_mutex_unlock( &p_mi->object_lock );
 122         RAISENULL( "Input is NULL" );
 123     }
 124
 125     p_input_thread = p_mi->p_input_thread;
 126     vlc_object_yield( p_input_thread );
 127
 128     vlc_mutex_unlock( &p_mi->object_lock );
 129
 130     return p_input_thread;
 131 }
 132
 133 /*
 134  * input_state_changed (Private) (input var "state" Callback)
 135  */
 136 static int
 137 input_state_changed( vlc_object_t * p_this, char const * psz_cmd,
 138                      vlc_value_t oldval, vlc_value_t newval,
 139                      void * p_userdata )
 140 {
 141     VLC_UNUSED(oldval);
 142     VLC_UNUSED(p_this);
 143     VLC_UNUSED(psz_cmd);
 144     libvlc_media_instance_t * p_mi = p_userdata;
 145     libvlc_event_t event;
 146     libvlc_event_type_t type = newval.i_int;
 147
 148     switch ( type )
 149     {
 150         case END_S:
 151             libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 152             event.type = libvlc_MediaInstanceReachedEnd;
 153             break;
 154         case PAUSE_S:
 155             libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_Playing, NULL);
 156             event.type = libvlc_MediaInstancePaused;
 157             break;
 158         case PLAYING_S:
 159             libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_Playing, NULL);
 160             event.type = libvlc_MediaInstancePlayed;
 161             break;
 162         case ERROR_S:
 163             libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_Error, NULL);
 164             event.type = libvlc_MediaInstanceEncounteredError;
 165             break;
 166         default:
 167             return VLC_SUCCESS;
 168     }
 169
 170     libvlc_event_send( p_mi->p_event_manager, &event );
 171     return VLC_SUCCESS;
 172 }
 173
 174 static int
 175 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 176                         vlc_value_t oldval, vlc_value_t newval,
 177                         void * p_userdata )
 178 {
 179     VLC_UNUSED(oldval);
 180     VLC_UNUSED(p_this);
 181     VLC_UNUSED(psz_cmd);
 182     libvlc_media_instance_t * p_mi = p_userdata;
 183     libvlc_event_t event;
 184
 185     libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 186     event.type = libvlc_MediaInstanceSeekableChanged;
 187     event.u.media_instance_seekable_changed.new_seekable = newval.b_bool;
 188
 189     libvlc_event_send( p_mi->p_event_manager, &event );
 190     return VLC_SUCCESS;
 191 }
 192
 193 static int
 194 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 195                         vlc_value_t oldval, vlc_value_t newval,
 196                         void * p_userdata )
 197 {
 198     VLC_UNUSED(oldval);
 199     VLC_UNUSED(p_this);
 200     VLC_UNUSED(psz_cmd);
 201     libvlc_media_instance_t * p_mi = p_userdata;
 202     libvlc_event_t event;
 203
 204     libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 205     event.type = libvlc_MediaInstancePausableChanged;
 206     event.u.media_instance_pausable_changed.new_pausable = newval.b_bool;
 207
 208     libvlc_event_send( p_mi->p_event_manager, &event );
 209     return VLC_SUCCESS;
 210 }
 211
 212 /*
 213  * input_position_changed (Private) (input var "intf-change" Callback)
 214  */
 215 static int
 216 input_position_changed( vlc_object_t * p_this, char const * psz_cmd,
 217                      vlc_value_t oldval, vlc_value_t newval,
 218                      void * p_userdata )
 219 {
 220     VLC_UNUSED(oldval);
 221     libvlc_media_instance_t * p_mi = p_userdata;
 222     vlc_value_t val;
 223
 224     if (!strncmp(psz_cmd, "intf", 4 /* "-change" no need to go further */))
 225     {
 226         input_thread_t * p_input = (input_thread_t *)p_this;
 227
 228         var_Get( p_input, "state", &val );
 229         if( val.i_int != PLAYING_S )
 230             return VLC_SUCCESS; /* Don't send the position while stopped */
 231
 232         var_Get( p_input, "position", &val );
 233     }
 234     else
 235         val.i_time = newval.i_time;
 236
 237     libvlc_event_t event;
 238     event.type = libvlc_MediaInstancePositionChanged;
 239     event.u.media_instance_position_changed.new_position = val.f_float;
 240
 241     libvlc_event_send( p_mi->p_event_manager, &event );
 242     return VLC_SUCCESS;
 243 }
 244
 245 /*
 246  * input_time_changed (Private) (input var "intf-change" Callback)
 247  */
 248 static int
 249 input_time_changed( vlc_object_t * p_this, char const * psz_cmd,
 250                      vlc_value_t oldval, vlc_value_t newval,
 251                      void * p_userdata )
 252 {
 253     VLC_UNUSED(oldval);
 254     libvlc_media_instance_t * p_mi = p_userdata;
 255     vlc_value_t val;
 256
 257     if (!strncmp(psz_cmd, "intf", 4 /* "-change" no need to go further */))
 258     {
 259         input_thread_t * p_input = (input_thread_t *)p_this;
 260
 261         var_Get( p_input, "state", &val );
 262         if( val.i_int != PLAYING_S )
 263             return VLC_SUCCESS; /* Don't send the position while stopped */
 264
 265         var_Get( p_input, "time", &val );
 266     }
 267     else
 268         val.i_time = newval.i_time;
 269
 270     libvlc_event_t event;
 271     event.type = libvlc_MediaInstanceTimeChanged;
 272     event.u.media_instance_time_changed.new_time = val.i_time;
 273     libvlc_event_send( p_mi->p_event_manager, &event );
 274     return VLC_SUCCESS;
 275 }
 276
 277 /**************************************************************************
 278  * Create a Media Instance object
 279  **************************************************************************/
 280 libvlc_media_instance_t *
 281 libvlc_media_instance_new( libvlc_instance_t * p_libvlc_instance,
 282                            libvlc_exception_t * p_e )
 283 {
 284     libvlc_media_instance_t * p_mi;
 285
 286     if( !p_libvlc_instance )
 287     {
 288         libvlc_exception_raise( p_e, "invalid libvlc instance" );
 289         return NULL;
 290     }
 291
 292     p_mi = malloc( sizeof(libvlc_media_instance_t) );
 293     p_mi->p_md = NULL;
 294     p_mi->drawable = 0;
 295     p_mi->p_libvlc_instance = p_libvlc_instance;
 296     p_mi->p_input_thread = NULL;
 297     /* refcount strategy:
 298      * - All items created by _new start with a refcount set to 1
 299      * - Accessor _release decrease the refcount by 1, if after that
 300      *   operation the refcount is 0, the object is destroyed.
 301      * - Accessor _retain increase the refcount by 1 (XXX: to implement) */
 302     p_mi->i_refcount = 1;
 303     p_mi->b_own_its_input_thread = VLC_TRUE;
 304     /* object_lock strategy:
 305      * - No lock held in constructor
 306      * - Lock when accessing all variable this lock is held
 307      * - Lock when attempting to destroy the object the lock is also held */
 308     vlc_mutex_init( p_mi->p_libvlc_instance->p_libvlc_int,
 309                     &p_mi->object_lock );
 310     p_mi->p_event_manager = libvlc_event_manager_new( p_mi,
 311             p_libvlc_instance, p_e );
 312     if( libvlc_exception_raised( p_e ) )
 313     {
 314         free( p_mi );
 315         return NULL;
 316     }
 317
 318     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 319             libvlc_MediaInstanceReachedEnd, p_e );
 320     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 321             libvlc_MediaInstanceEncounteredError, p_e );
 322     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 323             libvlc_MediaInstancePaused, p_e );
 324     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 325             libvlc_MediaInstancePlayed, p_e );
 326     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 327             libvlc_MediaInstancePositionChanged, p_e );
 328     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 329             libvlc_MediaInstanceTimeChanged, p_e );
 330     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 331             libvlc_MediaInstanceSeekableChanged, p_e );
 332     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 333             libvlc_MediaInstancePausableChanged, p_e );
 334
 335     return p_mi;
 336 }
 337
 338 /**************************************************************************
 339  * Create a Media Instance object with a media descriptor
 340  **************************************************************************/
 341 libvlc_media_instance_t *
 342 libvlc_media_instance_new_from_media_descriptor(
 343                                     libvlc_media_descriptor_t * p_md,
 344                                     libvlc_exception_t *p_e )
 345 {
 346     libvlc_media_instance_t * p_mi;
 347     p_mi = libvlc_media_instance_new( p_md->p_libvlc_instance, p_e );
 348
 349     if( !p_mi )
 350         return NULL;
 351
 352     libvlc_media_descriptor_retain( p_md );
 353     p_mi->p_md = p_md;
 354
 355     return p_mi;
 356 }
 357
 358 /**************************************************************************
 359  * Create a new media instance object from an input_thread (Libvlc Internal)
 360  **************************************************************************/
 361 libvlc_media_instance_t * libvlc_media_instance_new_from_input_thread(
 362                                    struct libvlc_instance_t *p_libvlc_instance,
 363                                    input_thread_t *p_input,
 364                                    libvlc_exception_t *p_e )
 365 {
 366     libvlc_media_instance_t * p_mi;
 367
 368     if( !p_input )
 369     {
 370         libvlc_exception_raise( p_e, "invalid input thread" );
 371         return NULL;
 372     }
 373
 374     p_mi = libvlc_media_instance_new( p_libvlc_instance, p_e );
 375
 376     if( !p_mi )
 377         return NULL;
 378
 379     p_mi->p_md = libvlc_media_descriptor_new_from_input_item(
 380                     p_libvlc_instance,
 381                     input_GetItem( p_input ), p_e );
 382
 383     if( !p_mi->p_md )
 384     {
 385         libvlc_media_instance_destroy( p_mi );
 386         return NULL;
 387     }
 388
 389     /* will be released in media_instance_release() */
 390     vlc_object_yield( p_input );
 391
 392     p_mi->p_input_thread = p_input;
 393     p_mi->b_own_its_input_thread = VLC_FALSE;
 394
 395     return p_mi;
 396 }
 397
 398 /**************************************************************************
 399  * Destroy a Media Instance object (libvlc internal)
 400  *
 401  * Warning: No lock held here, but hey, this is internal.
 402  **************************************************************************/
 403 void libvlc_media_instance_destroy( libvlc_media_instance_t *p_mi )
 404 {
 405     input_thread_t *p_input_thread;
 406     libvlc_exception_t p_e;
 407
 408     libvlc_exception_init( &p_e );
 409
 410     if( !p_mi )
 411         return;
 412
 413     p_input_thread = libvlc_get_input_thread( p_mi, &p_e );
 414
 415     if( libvlc_exception_raised( &p_e ) )
 416     {
 417         libvlc_event_manager_release( p_mi->p_event_manager );
 418         libvlc_exception_clear( &p_e );
 419         free( p_mi );
 420         return; /* no need to worry about no input thread */
 421     }
 422     vlc_mutex_destroy( &p_mi->object_lock );
 423
 424     input_DestroyThread( p_input_thread );
 425
 426     libvlc_media_descriptor_release( p_mi->p_md );
 427
 428     free( p_mi );
 429 }
 430
 431 /**************************************************************************
 432  * Release a Media Instance object
 433  **************************************************************************/
 434 void libvlc_media_instance_release( libvlc_media_instance_t *p_mi )
 435 {
 436     if( !p_mi )
 437         return;
 438
 439     vlc_mutex_lock( &p_mi->object_lock );
 440
 441     p_mi->i_refcount--;
 442
 443     if( p_mi->i_refcount > 0 )
 444     {
 445         vlc_mutex_unlock( &p_mi->object_lock );
 446         return;
 447     }
 448     vlc_mutex_unlock( &p_mi->object_lock );
 449     vlc_mutex_destroy( &p_mi->object_lock );
 450
 451     release_input_thread( p_mi );
 452
 453     libvlc_event_manager_release( p_mi->p_event_manager );
 454
 455     libvlc_media_descriptor_release( p_mi->p_md );
 456
 457     free( p_mi );
 458 }
 459
 460 /**************************************************************************
 461  * Retain a Media Instance object
 462  **************************************************************************/
 463 void libvlc_media_instance_retain( libvlc_media_instance_t *p_mi )
 464 {
 465     if( !p_mi )
 466         return;
 467
 468     p_mi->i_refcount++;
 469 }
 470
 471 /**************************************************************************
 472  * Set the Media descriptor associated with the instance
 473  **************************************************************************/
 474 void libvlc_media_instance_set_media_descriptor(
 475                             libvlc_media_instance_t *p_mi,
 476                             libvlc_media_descriptor_t *p_md,
 477                             libvlc_exception_t *p_e )
 478 {
 479     (void)p_e;
 480
 481     if( !p_mi )
 482         return;
 483
 484     vlc_mutex_lock( &p_mi->object_lock );
 485
 486     release_input_thread( p_mi );
 487
 488     if( p_mi->p_md )
 489         libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL );
 490
 491     libvlc_media_descriptor_release( p_mi->p_md );
 492
 493     if( !p_md )
 494     {
 495         p_mi->p_md = NULL;
 496         vlc_mutex_unlock( &p_mi->object_lock );
 497         return; /* It is ok to pass a NULL md */
 498     }
 499
 500     libvlc_media_descriptor_retain( p_md );
 501     p_mi->p_md = p_md;
 502
 503     /* The policy here is to ignore that we were created using a different
 504      * libvlc_instance, because we don't really care */
 505     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 506
 507     vlc_mutex_unlock( &p_mi->object_lock );
 508 }
 509
 510 /**************************************************************************
 511  * Get the Media descriptor associated with the instance
 512  **************************************************************************/
 513 libvlc_media_descriptor_t *
 514 libvlc_media_instance_get_media_descriptor(
 515                             libvlc_media_instance_t *p_mi,
 516                             libvlc_exception_t *p_e )
 517 {
 518     (void)p_e;
 519
 520     if( !p_mi->p_md )
 521         return NULL;
 522
 523     libvlc_media_descriptor_retain( p_mi->p_md );
 524     return p_mi->p_md;
 525 }
 526
 527 /**************************************************************************
 528  * Get the event Manager
 529  **************************************************************************/
 530 libvlc_event_manager_t *
 531 libvlc_media_instance_event_manager(
 532                             libvlc_media_instance_t *p_mi,
 533                             libvlc_exception_t *p_e )
 534 {
 535     (void)p_e;
 536
 537     return p_mi->p_event_manager;
 538 }
 539
 540 /**************************************************************************
 541  * Play
 542  **************************************************************************/
 543 void libvlc_media_instance_play( libvlc_media_instance_t *p_mi,
 544                                  libvlc_exception_t *p_e )
 545 {
 546     input_thread_t * p_input_thread;
 547
 548     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 549     {
 550         /* A thread already exists, send it a play message */
 551         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 552         vlc_object_release( p_input_thread );
 553         return;
 554     }
 555
 556     /* Ignore previous exception */
 557     libvlc_exception_clear( p_e );
 558
 559     vlc_mutex_lock( &p_mi->object_lock );
 560
 561     if( !p_mi->p_md )
 562     {
 563         libvlc_exception_raise( p_e, "no associated media descriptor" );
 564         vlc_mutex_unlock( &p_mi->object_lock );
 565         return;
 566     }
 567
 568     int i_input_id = input_Read( p_mi->p_libvlc_instance->p_libvlc_int,
 569                       p_mi->p_md->p_input_item, VLC_FALSE );
 570
 571     /* Released in input_release */
 572     p_mi->p_input_thread = (input_thread_t*)vlc_object_get( i_input_id );
 573
 574     if( !p_mi->p_input_thread )
 575     {
 576         return;
 577         vlc_mutex_unlock( &p_mi->object_lock );
 578     }
 579
 580     p_input_thread = p_mi->p_input_thread;
 581
 582     if( p_mi->drawable )
 583     {
 584         vlc_value_t val;
 585         val.i_int = p_mi->drawable;
 586         var_Create( p_input_thread, "drawable", VLC_VAR_DOINHERIT );
 587         var_Set( p_input_thread, "drawable", val );
 588     }
 589     var_AddCallback( p_input_thread, "state", input_state_changed, p_mi );
 590     var_AddCallback( p_input_thread, "seekable", input_seekable_changed, p_mi );
 591     var_AddCallback( p_input_thread, "pausable", input_pausable_changed, p_mi );
 592     var_AddCallback( p_input_thread, "intf-change", input_position_changed, p_mi );
 593     var_AddCallback( p_input_thread, "intf-change", input_time_changed, p_mi );
 594
 595     vlc_mutex_unlock( &p_mi->object_lock );
 596 }
 597
 598 /**************************************************************************
 599  * Pause
 600  **************************************************************************/
 601 void libvlc_media_instance_pause( libvlc_media_instance_t *p_mi,
 602                                   libvlc_exception_t *p_e )
 603 {
 604     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 605
 606     if( !p_input_thread )
 607         return;
 608
 609     int state = var_GetInteger( p_input_thread, "state" );
 610
 611     if( state == PLAYING_S )
 612     {
 613         if( libvlc_media_instance_can_pause( p_mi, p_e ) )
 614             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 615         else
 616             libvlc_media_instance_stop( p_mi, p_e );
 617     }
 618     else
 619         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 620
 621     vlc_object_release( p_input_thread );
 622 }
 623
 624 /**************************************************************************
 625  * Stop
 626  **************************************************************************/
 627 void libvlc_media_instance_stop( libvlc_media_instance_t *p_mi,
 628                                  libvlc_exception_t *p_e )
 629 {
 630     if( p_mi->b_own_its_input_thread )
 631         release_input_thread( p_mi ); /* This will stop the input thread */
 632     else
 633     {
 634         input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 635
 636         if( !p_input_thread )
 637             return;
 638
 639         input_StopThread( p_input_thread );
 640         vlc_object_release( p_input_thread );
 641     }
 642 }
 643
 644 /**************************************************************************
 645  * Set Drawable
 646  **************************************************************************/
 647 void libvlc_media_instance_set_drawable( libvlc_media_instance_t *p_mi,
 648                                          libvlc_drawable_t drawable,
 649                                          libvlc_exception_t *p_e )
 650 {
 651     (void)p_e;
 652     p_mi->drawable = drawable;
 653 }
 654
 655 /**************************************************************************
 656  * Get Drawable
 657  **************************************************************************/
 658 libvlc_drawable_t
 659 libvlc_media_instance_get_drawable ( libvlc_media_instance_t *p_mi, libvlc_exception_t *p_e )
 660 {
 661     (void)p_e;
 662     return p_mi->drawable;
 663 }
 664
 665 /**************************************************************************
 666  * Getters for stream information
 667  **************************************************************************/
 668 libvlc_time_t libvlc_media_instance_get_length(
 669                              libvlc_media_instance_t *p_mi,
 670                              libvlc_exception_t *p_e )
 671 {
 672     input_thread_t *p_input_thread;
 673     vlc_value_t val;
 674
 675     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 676     if( !p_input_thread )
 677         return -1;
 678
 679     var_Get( p_input_thread, "length", &val );
 680     vlc_object_release( p_input_thread );
 681
 682     return (val.i_time+500LL)/1000LL;
 683 }
 684
 685 libvlc_time_t libvlc_media_instance_get_time(
 686                                    libvlc_media_instance_t *p_mi,
 687                                    libvlc_exception_t *p_e )
 688 {
 689     input_thread_t *p_input_thread;
 690     vlc_value_t val;
 691
 692     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 693     if( !p_input_thread )
 694         return -1;
 695
 696     var_Get( p_input_thread , "time", &val );
 697     vlc_object_release( p_input_thread );
 698     return (val.i_time+500LL)/1000LL;
 699 }
 700
 701 void libvlc_media_instance_set_time(
 702                                  libvlc_media_instance_t *p_mi,
 703                                  libvlc_time_t time,
 704                                  libvlc_exception_t *p_e )
 705 {
 706     input_thread_t *p_input_thread;
 707     vlc_value_t value;
 708
 709     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 710     if( !p_input_thread )
 711         return;
 712
 713     value.i_time = time*1000LL;
 714     var_Set( p_input_thread, "time", value );
 715     vlc_object_release( p_input_thread );
 716 }
 717
 718 void libvlc_media_instance_set_position(
 719                                 libvlc_media_instance_t *p_mi,
 720                                 float position,
 721                                 libvlc_exception_t *p_e )
 722 {
 723     input_thread_t *p_input_thread;
 724     vlc_value_t val;
 725     val.f_float = position;
 726
 727     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 728     if( !p_input_thread )
 729         return;
 730
 731     var_Set( p_input_thread, "position", val );
 732     vlc_object_release( p_input_thread );
 733 }
 734
 735 float libvlc_media_instance_get_position(
 736                                  libvlc_media_instance_t *p_mi,
 737                                  libvlc_exception_t *p_e )
 738 {
 739     input_thread_t *p_input_thread;
 740     vlc_value_t val;
 741
 742     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 743     if( !p_input_thread )
 744         return -1.0;
 745
 746     var_Get( p_input_thread, "position", &val );
 747     vlc_object_release( p_input_thread );
 748
 749     return val.f_float;
 750 }
 751
 752 void libvlc_media_instance_set_chapter(
 753                                  libvlc_media_instance_t *p_mi,
 754                                  int chapter,
 755                                  libvlc_exception_t *p_e )
 756 {
 757     input_thread_t *p_input_thread;
 758     vlc_value_t val;
 759     val.i_int = chapter;
 760
 761     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 762     if( !p_input_thread )
 763         return;
 764
 765     var_Set( p_input_thread, "chapter", val );
 766     vlc_object_release( p_input_thread );
 767 }
 768
 769 int libvlc_media_instance_get_chapter(
 770                                  libvlc_media_instance_t *p_mi,
 771                                  libvlc_exception_t *p_e )
 772 {
 773     input_thread_t *p_input_thread;
 774     vlc_value_t val;
 775
 776     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 777     if( !p_input_thread )
 778         return -1.0;
 779
 780     var_Get( p_input_thread, "chapter", &val );
 781     vlc_object_release( p_input_thread );
 782
 783     return val.i_int;
 784 }
 785
 786 int libvlc_media_instance_get_chapter_count(
 787                                  libvlc_media_instance_t *p_mi,
 788                                  libvlc_exception_t *p_e )
 789 {
 790     input_thread_t *p_input_thread;
 791     vlc_value_t val;
 792
 793     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 794     if( !p_input_thread )
 795         return -1.0;
 796
 797     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 798     vlc_object_release( p_input_thread );
 799
 800     return val.i_int;
 801 }
 802
 803 float libvlc_media_instance_get_fps(
 804                                  libvlc_media_instance_t *p_mi,
 805                                  libvlc_exception_t *p_e)
 806 {
 807     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 808     double f_fps = 0.0;
 809
 810     if( p_input_thread )
 811     {
 812         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
 813             f_fps = 0.0;
 814         vlc_object_release( p_input_thread );
 815     }
 816     return f_fps;
 817 }
 818
 819 int libvlc_media_instance_will_play( libvlc_media_instance_t *p_mi,
 820                                      libvlc_exception_t *p_e)
 821 {
 822     input_thread_t *p_input_thread =
 823                             libvlc_get_input_thread ( p_mi, p_e);
 824     if ( !p_input_thread )
 825         return VLC_FALSE;
 826
 827     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
 828     {
 829         vlc_object_release( p_input_thread );
 830         return VLC_TRUE;
 831     }
 832     vlc_object_release( p_input_thread );
 833     return VLC_FALSE;
 834 }
 835
 836 void libvlc_media_instance_set_rate(
 837                                  libvlc_media_instance_t *p_mi,
 838                                  float rate,
 839                                  libvlc_exception_t *p_e )
 840 {
 841     input_thread_t *p_input_thread;
 842     vlc_value_t val;
 843
 844     if( rate <= 0 )
 845         RAISEVOID( "Rate value is invalid" );
 846
 847     val.i_int = 1000.0f/rate;
 848
 849     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 850     if ( !p_input_thread )
 851         return;
 852
 853     var_Set( p_input_thread, "rate", val );
 854     vlc_object_release( p_input_thread );
 855 }
 856
 857 float libvlc_media_instance_get_rate(
 858                                  libvlc_media_instance_t *p_mi,
 859                                  libvlc_exception_t *p_e )
 860 {
 861     input_thread_t *p_input_thread;
 862     vlc_value_t val;
 863
 864     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 865     if ( !p_input_thread )
 866         return -1.0;
 867
 868     var_Get( p_input_thread, "rate", &val );
 869     vlc_object_release( p_input_thread );
 870
 871     return (float)1000.0f/val.i_int;
 872 }
 873
 874 libvlc_state_t libvlc_media_instance_get_state(
 875                                  libvlc_media_instance_t *p_mi,
 876                                  libvlc_exception_t *p_e )
 877 {
 878     input_thread_t *p_input_thread;
 879     vlc_value_t val;
 880
 881     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 882     if ( !p_input_thread )
 883     {
 884         /* We do return the right value, no need to throw an exception */
 885         if( libvlc_exception_raised( p_e ) )
 886             libvlc_exception_clear( p_e );
 887         return libvlc_Stopped;
 888     }
 889
 890     var_Get( p_input_thread, "state", &val );
 891     vlc_object_release( p_input_thread );
 892
 893     return vlc_to_libvlc_state(val.i_int);
 894 }
 895
 896 int libvlc_media_instance_is_seekable( libvlc_media_instance_t *p_mi,
 897                                        libvlc_exception_t *p_e )
 898 {
 899     input_thread_t *p_input_thread;
 900     vlc_value_t val;
 901
 902     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 903     if ( !p_input_thread )
 904     {
 905         /* We do return the right value, no need to throw an exception */
 906         if( libvlc_exception_raised( p_e ) )
 907             libvlc_exception_clear( p_e );
 908         return VLC_FALSE;
 909     }
 910     var_Get( p_input_thread, "seekable", &val );
 911     vlc_object_release( p_input_thread );
 912
 913     return val.b_bool;
 914 }
 915
 916 int libvlc_media_instance_can_pause( libvlc_media_instance_t *p_mi,
 917                                      libvlc_exception_t *p_e )
 918 {
 919     input_thread_t *p_input_thread;
 920     vlc_value_t val;
 921
 922     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 923     if ( !p_input_thread )
 924     {
 925         /* We do return the right value, no need to throw an exception */
 926         if( libvlc_exception_raised( p_e ) )
 927             libvlc_exception_clear( p_e );
 928         return VLC_FALSE;
 929     }
 930     var_Get( p_input_thread, "can-pause", &val );
 931     vlc_object_release( p_input_thread );
 932
 933     return val.b_bool;
 934 }