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         input_DestroyThread( p_input_thread );
  96
  97         var_Destroy( p_input_thread, "drawable" );
  98     }
  99     else
 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  * Object lock is held.
 110  */
 111 input_thread_t *libvlc_get_input_thread( libvlc_media_instance_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_yield( p_input_thread );
 128
 129     vlc_mutex_unlock( &p_mi->object_lock );
 130
 131     return p_input_thread;
 132 }
 133
 134 /*
 135  * input_state_changed (Private) (input var "state" Callback)
 136  */
 137 static int
 138 input_state_changed( vlc_object_t * p_this, char const * psz_cmd,
 139                      vlc_value_t oldval, vlc_value_t newval,
 140                      void * p_userdata )
 141 {
 142     VLC_UNUSED(oldval);
 143     VLC_UNUSED(p_this);
 144     VLC_UNUSED(psz_cmd);
 145     libvlc_media_instance_t * p_mi = p_userdata;
 146     libvlc_event_t event;
 147     libvlc_event_type_t type = newval.i_int;
 148
 149     switch ( type )
 150     {
 151         case END_S:
 152             libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 153             event.type = libvlc_MediaInstanceReachedEnd;
 154             break;
 155         case PAUSE_S:
 156             libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_Playing, NULL);
 157             event.type = libvlc_MediaInstancePaused;
 158             break;
 159         case PLAYING_S:
 160             libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_Playing, NULL);
 161             event.type = libvlc_MediaInstancePlayed;
 162             break;
 163         case ERROR_S:
 164             libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_Error, NULL);
 165             event.type = libvlc_MediaInstanceEncounteredError;
 166             break;
 167         default:
 168             return VLC_SUCCESS;
 169     }
 170
 171     libvlc_event_send( p_mi->p_event_manager, &event );
 172     return VLC_SUCCESS;
 173 }
 174
 175 static int
 176 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
 177                         vlc_value_t oldval, vlc_value_t newval,
 178                         void * p_userdata )
 179 {
 180     VLC_UNUSED(oldval);
 181     VLC_UNUSED(p_this);
 182     VLC_UNUSED(psz_cmd);
 183     libvlc_media_instance_t * p_mi = p_userdata;
 184     libvlc_event_t event;
 185
 186     libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 187     event.type = libvlc_MediaInstanceSeekableChanged;
 188     event.u.media_instance_seekable_changed.new_seekable = newval.b_bool;
 189
 190     libvlc_event_send( p_mi->p_event_manager, &event );
 191     return VLC_SUCCESS;
 192 }
 193
 194 static int
 195 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
 196                         vlc_value_t oldval, vlc_value_t newval,
 197                         void * p_userdata )
 198 {
 199     VLC_UNUSED(oldval);
 200     VLC_UNUSED(p_this);
 201     VLC_UNUSED(psz_cmd);
 202     libvlc_media_instance_t * p_mi = p_userdata;
 203     libvlc_event_t event;
 204
 205     libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL);
 206     event.type = libvlc_MediaInstancePausableChanged;
 207     event.u.media_instance_pausable_changed.new_pausable = newval.b_bool;
 208
 209     libvlc_event_send( p_mi->p_event_manager, &event );
 210     return VLC_SUCCESS;
 211 }
 212
 213 /*
 214  * input_position_changed (Private) (input var "intf-change" Callback)
 215  */
 216 static int
 217 input_position_changed( vlc_object_t * p_this, char const * psz_cmd,
 218                      vlc_value_t oldval, vlc_value_t newval,
 219                      void * p_userdata )
 220 {
 221     VLC_UNUSED(oldval);
 222     libvlc_media_instance_t * p_mi = p_userdata;
 223     vlc_value_t val;
 224
 225     if (!strncmp(psz_cmd, "intf", 4 /* "-change" no need to go further */))
 226     {
 227         input_thread_t * p_input = (input_thread_t *)p_this;
 228
 229         var_Get( p_input, "state", &val );
 230         if( val.i_int != PLAYING_S )
 231             return VLC_SUCCESS; /* Don't send the position while stopped */
 232
 233         var_Get( p_input, "position", &val );
 234     }
 235     else
 236         val.i_time = newval.i_time;
 237
 238     libvlc_event_t event;
 239     event.type = libvlc_MediaInstancePositionChanged;
 240     event.u.media_instance_position_changed.new_position = val.f_float;
 241
 242     libvlc_event_send( p_mi->p_event_manager, &event );
 243     return VLC_SUCCESS;
 244 }
 245
 246 /*
 247  * input_time_changed (Private) (input var "intf-change" Callback)
 248  */
 249 static int
 250 input_time_changed( vlc_object_t * p_this, char const * psz_cmd,
 251                      vlc_value_t oldval, vlc_value_t newval,
 252                      void * p_userdata )
 253 {
 254     VLC_UNUSED(oldval);
 255     libvlc_media_instance_t * p_mi = p_userdata;
 256     vlc_value_t val;
 257
 258     if (!strncmp(psz_cmd, "intf", 4 /* "-change" no need to go further */))
 259     {
 260         input_thread_t * p_input = (input_thread_t *)p_this;
 261
 262         var_Get( p_input, "state", &val );
 263         if( val.i_int != PLAYING_S )
 264             return VLC_SUCCESS; /* Don't send the position while stopped */
 265
 266         var_Get( p_input, "time", &val );
 267     }
 268     else
 269         val.i_time = newval.i_time;
 270
 271     libvlc_event_t event;
 272     event.type = libvlc_MediaInstanceTimeChanged;
 273     event.u.media_instance_time_changed.new_time = val.i_time;
 274     libvlc_event_send( p_mi->p_event_manager, &event );
 275     return VLC_SUCCESS;
 276 }
 277
 278 /**************************************************************************
 279  * Create a Media Instance object
 280  **************************************************************************/
 281 libvlc_media_instance_t *
 282 libvlc_media_instance_new( libvlc_instance_t * p_libvlc_instance,
 283                            libvlc_exception_t * p_e )
 284 {
 285     libvlc_media_instance_t * p_mi;
 286
 287     if( !p_libvlc_instance )
 288     {
 289         libvlc_exception_raise( p_e, "invalid libvlc instance" );
 290         return NULL;
 291     }
 292
 293     p_mi = malloc( sizeof(libvlc_media_instance_t) );
 294     p_mi->p_md = NULL;
 295     p_mi->drawable = 0;
 296     p_mi->p_libvlc_instance = p_libvlc_instance;
 297     p_mi->p_input_thread = NULL;
 298     /* refcount strategy:
 299      * - All items created by _new start with a refcount set to 1
 300      * - Accessor _release decrease the refcount by 1, if after that
 301      *   operation the refcount is 0, the object is destroyed.
 302      * - Accessor _retain increase the refcount by 1 (XXX: to implement) */
 303     p_mi->i_refcount = 1;
 304     p_mi->b_own_its_input_thread = VLC_TRUE;
 305     /* object_lock strategy:
 306      * - No lock held in constructor
 307      * - Lock when accessing all variable this lock is held
 308      * - Lock when attempting to destroy the object the lock is also held */
 309     vlc_mutex_init( p_mi->p_libvlc_instance->p_libvlc_int,
 310                     &p_mi->object_lock );
 311     p_mi->p_event_manager = libvlc_event_manager_new( p_mi,
 312             p_libvlc_instance, p_e );
 313     if( libvlc_exception_raised( p_e ) )
 314     {
 315         free( p_mi );
 316         return NULL;
 317     }
 318
 319     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 320             libvlc_MediaInstanceReachedEnd, p_e );
 321     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 322             libvlc_MediaInstanceEncounteredError, p_e );
 323     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 324             libvlc_MediaInstancePaused, p_e );
 325     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 326             libvlc_MediaInstancePlayed, p_e );
 327     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 328             libvlc_MediaInstancePositionChanged, p_e );
 329     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 330             libvlc_MediaInstanceTimeChanged, p_e );
 331     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 332             libvlc_MediaInstanceSeekableChanged, p_e );
 333     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 334             libvlc_MediaInstancePausableChanged, p_e );
 335
 336     return p_mi;
 337 }
 338
 339 /**************************************************************************
 340  * Create a Media Instance object with a media descriptor
 341  **************************************************************************/
 342 libvlc_media_instance_t *
 343 libvlc_media_instance_new_from_media_descriptor(
 344                                     libvlc_media_descriptor_t * p_md,
 345                                     libvlc_exception_t *p_e )
 346 {
 347     libvlc_media_instance_t * p_mi;
 348     p_mi = libvlc_media_instance_new( p_md->p_libvlc_instance, p_e );
 349
 350     if( !p_mi )
 351         return NULL;
 352
 353     libvlc_media_descriptor_retain( p_md );
 354     p_mi->p_md = p_md;
 355
 356     return p_mi;
 357 }
 358
 359 /**************************************************************************
 360  * Create a new media instance object from an input_thread (Libvlc Internal)
 361  **************************************************************************/
 362 libvlc_media_instance_t * libvlc_media_instance_new_from_input_thread(
 363                                    struct libvlc_instance_t *p_libvlc_instance,
 364                                    input_thread_t *p_input,
 365                                    libvlc_exception_t *p_e )
 366 {
 367     libvlc_media_instance_t * p_mi;
 368
 369     if( !p_input )
 370     {
 371         libvlc_exception_raise( p_e, "invalid input thread" );
 372         return NULL;
 373     }
 374
 375     p_mi = libvlc_media_instance_new( p_libvlc_instance, p_e );
 376
 377     if( !p_mi )
 378         return NULL;
 379
 380     p_mi->p_md = libvlc_media_descriptor_new_from_input_item(
 381                     p_libvlc_instance,
 382                     input_GetItem( p_input ), p_e );
 383
 384     if( !p_mi->p_md )
 385     {
 386         libvlc_media_instance_destroy( p_mi );
 387         return NULL;
 388     }
 389
 390     /* will be released in media_instance_release() */
 391     vlc_object_yield( p_input );
 392
 393     p_mi->p_input_thread = p_input;
 394     p_mi->b_own_its_input_thread = VLC_FALSE;
 395
 396     return p_mi;
 397 }
 398
 399 /**************************************************************************
 400  * Destroy a Media Instance object (libvlc internal)
 401  *
 402  * Warning: No lock held here, but hey, this is internal.
 403  **************************************************************************/
 404 void libvlc_media_instance_destroy( libvlc_media_instance_t *p_mi )
 405 {
 406     input_thread_t *p_input_thread;
 407     libvlc_exception_t p_e;
 408
 409     libvlc_exception_init( &p_e );
 410
 411     if( !p_mi )
 412         return;
 413
 414     p_input_thread = libvlc_get_input_thread( p_mi, &p_e );
 415
 416     if( libvlc_exception_raised( &p_e ) )
 417     {
 418         libvlc_event_manager_release( p_mi->p_event_manager );
 419         libvlc_exception_clear( &p_e );
 420         free( p_mi );
 421         return; /* no need to worry about no input thread */
 422     }
 423     vlc_mutex_destroy( &p_mi->object_lock );
 424
 425     input_DestroyThread( p_input_thread );
 426
 427     libvlc_media_descriptor_release( p_mi->p_md );
 428
 429     free( p_mi );
 430 }
 431
 432 /**************************************************************************
 433  * Release a Media Instance object
 434  **************************************************************************/
 435 void libvlc_media_instance_release( libvlc_media_instance_t *p_mi )
 436 {
 437     if( !p_mi )
 438         return;
 439
 440     vlc_mutex_lock( &p_mi->object_lock );
 441
 442     p_mi->i_refcount--;
 443
 444     if( p_mi->i_refcount > 0 )
 445     {
 446         vlc_mutex_unlock( &p_mi->object_lock );
 447         return;
 448     }
 449     vlc_mutex_unlock( &p_mi->object_lock );
 450     vlc_mutex_destroy( &p_mi->object_lock );
 451
 452     release_input_thread( p_mi );
 453
 454     libvlc_event_manager_release( p_mi->p_event_manager );
 455
 456     libvlc_media_descriptor_release( p_mi->p_md );
 457
 458     free( p_mi );
 459 }
 460
 461 /**************************************************************************
 462  * Retain a Media Instance object
 463  **************************************************************************/
 464 void libvlc_media_instance_retain( libvlc_media_instance_t *p_mi )
 465 {
 466     if( !p_mi )
 467         return;
 468
 469     p_mi->i_refcount++;
 470 }
 471
 472 /**************************************************************************
 473  * Set the Media descriptor associated with the instance
 474  **************************************************************************/
 475 void libvlc_media_instance_set_media_descriptor(
 476                             libvlc_media_instance_t *p_mi,
 477                             libvlc_media_descriptor_t *p_md,
 478                             libvlc_exception_t *p_e )
 479 {
 480     (void)p_e;
 481
 482     if( !p_mi )
 483         return;
 484
 485     vlc_mutex_lock( &p_mi->object_lock );
 486
 487     release_input_thread( p_mi );
 488
 489     if( p_mi->p_md )
 490         libvlc_media_descriptor_set_state( p_mi->p_md, libvlc_NothingSpecial, NULL );
 491
 492     libvlc_media_descriptor_release( p_mi->p_md );
 493
 494     if( !p_md )
 495     {
 496         p_mi->p_md = NULL;
 497         vlc_mutex_unlock( &p_mi->object_lock );
 498         return; /* It is ok to pass a NULL md */
 499     }
 500
 501     libvlc_media_descriptor_retain( p_md );
 502     p_mi->p_md = p_md;
 503
 504     /* The policy here is to ignore that we were created using a different
 505      * libvlc_instance, because we don't really care */
 506     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 507
 508     vlc_mutex_unlock( &p_mi->object_lock );
 509 }
 510
 511 /**************************************************************************
 512  * Get the Media descriptor associated with the instance
 513  **************************************************************************/
 514 libvlc_media_descriptor_t *
 515 libvlc_media_instance_get_media_descriptor(
 516                             libvlc_media_instance_t *p_mi,
 517                             libvlc_exception_t *p_e )
 518 {
 519     (void)p_e;
 520
 521     if( !p_mi->p_md )
 522         return NULL;
 523
 524     libvlc_media_descriptor_retain( p_mi->p_md );
 525     return p_mi->p_md;
 526 }
 527
 528 /**************************************************************************
 529  * Get the event Manager
 530  **************************************************************************/
 531 libvlc_event_manager_t *
 532 libvlc_media_instance_event_manager(
 533                             libvlc_media_instance_t *p_mi,
 534                             libvlc_exception_t *p_e )
 535 {
 536     (void)p_e;
 537
 538     return p_mi->p_event_manager;
 539 }
 540
 541 /**************************************************************************
 542  * Play
 543  **************************************************************************/
 544 void libvlc_media_instance_play( libvlc_media_instance_t *p_mi,
 545                                  libvlc_exception_t *p_e )
 546 {
 547     input_thread_t * p_input_thread;
 548
 549     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 550     {
 551         /* A thread already exists, send it a play message */
 552         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 553         vlc_object_release( p_input_thread );
 554         return;
 555     }
 556
 557     /* Ignore previous exception */
 558     libvlc_exception_clear( p_e );
 559
 560     vlc_mutex_lock( &p_mi->object_lock );
 561
 562     if( !p_mi->p_md )
 563     {
 564         libvlc_exception_raise( p_e, "no associated media descriptor" );
 565         vlc_mutex_unlock( &p_mi->object_lock );
 566         return;
 567     }
 568
 569     int i_input_id = input_Read( p_mi->p_libvlc_instance->p_libvlc_int,
 570                       p_mi->p_md->p_input_item, VLC_FALSE );
 571
 572     /* Released in input_release */
 573     p_mi->p_input_thread = (input_thread_t*)vlc_object_get( i_input_id );
 574
 575     if( !p_mi->p_input_thread )
 576     {
 577         return;
 578         vlc_mutex_unlock( &p_mi->object_lock );
 579     }
 580
 581     p_input_thread = p_mi->p_input_thread;
 582
 583     if( p_mi->drawable )
 584     {
 585         vlc_value_t val;
 586         val.i_int = p_mi->drawable;
 587         var_Create( p_input_thread, "drawable", VLC_VAR_DOINHERIT );
 588         var_Set( p_input_thread, "drawable", val );
 589     }
 590     var_AddCallback( p_input_thread, "state", input_state_changed, p_mi );
 591     var_AddCallback( p_input_thread, "seekable", input_seekable_changed, p_mi );
 592     var_AddCallback( p_input_thread, "pausable", input_pausable_changed, p_mi );
 593     var_AddCallback( p_input_thread, "intf-change", input_position_changed, p_mi );
 594     var_AddCallback( p_input_thread, "intf-change", input_time_changed, p_mi );
 595
 596     vlc_mutex_unlock( &p_mi->object_lock );
 597 }
 598
 599 /**************************************************************************
 600  * Pause
 601  **************************************************************************/
 602 void libvlc_media_instance_pause( libvlc_media_instance_t *p_mi,
 603                                   libvlc_exception_t *p_e )
 604 {
 605     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 606
 607     if( !p_input_thread )
 608         return;
 609
 610     int state = var_GetInteger( p_input_thread, "state" );
 611
 612     if( state == PLAYING_S )
 613     {
 614         if( libvlc_media_instance_can_pause( p_mi, p_e ) )
 615             input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 616         else
 617             libvlc_media_instance_stop( p_mi, p_e );
 618     }
 619     else
 620         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 621
 622     vlc_object_release( p_input_thread );
 623 }
 624
 625 /**************************************************************************
 626  * Stop
 627  **************************************************************************/
 628 void libvlc_media_instance_stop( libvlc_media_instance_t *p_mi,
 629                                  libvlc_exception_t *p_e )
 630 {
 631     if( p_mi->b_own_its_input_thread )
 632         release_input_thread( p_mi ); /* This will stop the input thread */
 633     else
 634     {
 635         input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 636
 637         if( !p_input_thread )
 638             return;
 639
 640         input_StopThread( p_input_thread );
 641         vlc_object_release( p_input_thread );
 642     }
 643 }
 644
 645 /**************************************************************************
 646  * Set Drawable
 647  **************************************************************************/
 648 void libvlc_media_instance_set_drawable( libvlc_media_instance_t *p_mi,
 649                                          libvlc_drawable_t drawable,
 650                                          libvlc_exception_t *p_e )
 651 {
 652     (void)p_e;
 653     p_mi->drawable = drawable;
 654 }
 655
 656 /**************************************************************************
 657  * Get Drawable
 658  **************************************************************************/
 659 libvlc_drawable_t
 660 libvlc_media_instance_get_drawable ( libvlc_media_instance_t *p_mi, libvlc_exception_t *p_e )
 661 {
 662     (void)p_e;
 663     return p_mi->drawable;
 664 }
 665
 666 /**************************************************************************
 667  * Getters for stream information
 668  **************************************************************************/
 669 libvlc_time_t libvlc_media_instance_get_length(
 670                              libvlc_media_instance_t *p_mi,
 671                              libvlc_exception_t *p_e )
 672 {
 673     input_thread_t *p_input_thread;
 674     vlc_value_t val;
 675
 676     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 677     if( !p_input_thread )
 678         return -1;
 679
 680     var_Get( p_input_thread, "length", &val );
 681     vlc_object_release( p_input_thread );
 682
 683     return (val.i_time+500LL)/1000LL;
 684 }
 685
 686 libvlc_time_t libvlc_media_instance_get_time(
 687                                    libvlc_media_instance_t *p_mi,
 688                                    libvlc_exception_t *p_e )
 689 {
 690     input_thread_t *p_input_thread;
 691     vlc_value_t val;
 692
 693     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 694     if( !p_input_thread )
 695         return -1;
 696
 697     var_Get( p_input_thread , "time", &val );
 698     vlc_object_release( p_input_thread );
 699     return (val.i_time+500LL)/1000LL;
 700 }
 701
 702 void libvlc_media_instance_set_time(
 703                                  libvlc_media_instance_t *p_mi,
 704                                  libvlc_time_t time,
 705                                  libvlc_exception_t *p_e )
 706 {
 707     input_thread_t *p_input_thread;
 708     vlc_value_t value;
 709
 710     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 711     if( !p_input_thread )
 712         return;
 713
 714     value.i_time = time*1000LL;
 715     var_Set( p_input_thread, "time", value );
 716     vlc_object_release( p_input_thread );
 717 }
 718
 719 void libvlc_media_instance_set_position(
 720                                 libvlc_media_instance_t *p_mi,
 721                                 float position,
 722                                 libvlc_exception_t *p_e )
 723 {
 724     input_thread_t *p_input_thread;
 725     vlc_value_t val;
 726     val.f_float = position;
 727
 728     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 729     if( !p_input_thread )
 730         return;
 731
 732     var_Set( p_input_thread, "position", val );
 733     vlc_object_release( p_input_thread );
 734 }
 735
 736 float libvlc_media_instance_get_position(
 737                                  libvlc_media_instance_t *p_mi,
 738                                  libvlc_exception_t *p_e )
 739 {
 740     input_thread_t *p_input_thread;
 741     vlc_value_t val;
 742
 743     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 744     if( !p_input_thread )
 745         return -1.0;
 746
 747     var_Get( p_input_thread, "position", &val );
 748     vlc_object_release( p_input_thread );
 749
 750     return val.f_float;
 751 }
 752
 753 void libvlc_media_instance_set_chapter(
 754                                  libvlc_media_instance_t *p_mi,
 755                                  int chapter,
 756                                  libvlc_exception_t *p_e )
 757 {
 758     input_thread_t *p_input_thread;
 759     vlc_value_t val;
 760     val.i_int = chapter;
 761
 762     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 763     if( !p_input_thread )
 764         return;
 765
 766     var_Set( p_input_thread, "chapter", val );
 767     vlc_object_release( p_input_thread );
 768 }
 769
 770 int libvlc_media_instance_get_chapter(
 771                                  libvlc_media_instance_t *p_mi,
 772                                  libvlc_exception_t *p_e )
 773 {
 774     input_thread_t *p_input_thread;
 775     vlc_value_t val;
 776
 777     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 778     if( !p_input_thread )
 779         return -1.0;
 780
 781     var_Get( p_input_thread, "chapter", &val );
 782     vlc_object_release( p_input_thread );
 783
 784     return val.i_int;
 785 }
 786
 787 int libvlc_media_instance_get_chapter_count(
 788                                  libvlc_media_instance_t *p_mi,
 789                                  libvlc_exception_t *p_e )
 790 {
 791     input_thread_t *p_input_thread;
 792     vlc_value_t val;
 793
 794     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 795     if( !p_input_thread )
 796         return -1.0;
 797
 798     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 799     vlc_object_release( p_input_thread );
 800
 801     return val.i_int;
 802 }
 803
 804 float libvlc_media_instance_get_fps(
 805                                  libvlc_media_instance_t *p_mi,
 806                                  libvlc_exception_t *p_e)
 807 {
 808     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 809     double f_fps = 0.0;
 810
 811     if( p_input_thread )
 812     {
 813         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
 814             f_fps = 0.0;
 815         vlc_object_release( p_input_thread );
 816     }
 817     return f_fps;
 818 }
 819
 820 int libvlc_media_instance_will_play( libvlc_media_instance_t *p_mi,
 821                                      libvlc_exception_t *p_e)
 822 {
 823     input_thread_t *p_input_thread =
 824                             libvlc_get_input_thread ( p_mi, p_e);
 825     if ( !p_input_thread )
 826         return VLC_FALSE;
 827
 828     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
 829     {
 830         vlc_object_release( p_input_thread );
 831         return VLC_TRUE;
 832     }
 833     vlc_object_release( p_input_thread );
 834     return VLC_FALSE;
 835 }
 836
 837 void libvlc_media_instance_set_rate(
 838                                  libvlc_media_instance_t *p_mi,
 839                                  float rate,
 840                                  libvlc_exception_t *p_e )
 841 {
 842     input_thread_t *p_input_thread;
 843     vlc_value_t val;
 844
 845     if( rate <= 0 )
 846         RAISEVOID( "Rate value is invalid" );
 847
 848     val.i_int = 1000.0f/rate;
 849
 850     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 851     if ( !p_input_thread )
 852         return;
 853
 854     var_Set( p_input_thread, "rate", val );
 855     vlc_object_release( p_input_thread );
 856 }
 857
 858 float libvlc_media_instance_get_rate(
 859                                  libvlc_media_instance_t *p_mi,
 860                                  libvlc_exception_t *p_e )
 861 {
 862     input_thread_t *p_input_thread;
 863     vlc_value_t val;
 864
 865     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 866     if ( !p_input_thread )
 867         return -1.0;
 868
 869     var_Get( p_input_thread, "rate", &val );
 870     vlc_object_release( p_input_thread );
 871
 872     return (float)1000.0f/val.i_int;
 873 }
 874
 875 libvlc_state_t libvlc_media_instance_get_state(
 876                                  libvlc_media_instance_t *p_mi,
 877                                  libvlc_exception_t *p_e )
 878 {
 879     input_thread_t *p_input_thread;
 880     vlc_value_t val;
 881
 882     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 883     if ( !p_input_thread )
 884     {
 885         /* We do return the right value, no need to throw an exception */
 886         if( libvlc_exception_raised( p_e ) )
 887             libvlc_exception_clear( p_e );
 888         return libvlc_Stopped;
 889     }
 890
 891     var_Get( p_input_thread, "state", &val );
 892     vlc_object_release( p_input_thread );
 893
 894     return vlc_to_libvlc_state(val.i_int);
 895 }
 896
 897 int libvlc_media_instance_is_seekable( libvlc_media_instance_t *p_mi,
 898                                        libvlc_exception_t *p_e )
 899 {
 900     input_thread_t *p_input_thread;
 901     vlc_value_t val;
 902
 903     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 904     if ( !p_input_thread )
 905     {
 906         /* We do return the right value, no need to throw an exception */
 907         if( libvlc_exception_raised( p_e ) )
 908             libvlc_exception_clear( p_e );
 909         return VLC_FALSE;
 910     }
 911     var_Get( p_input_thread, "seekable", &val );
 912     vlc_object_release( p_input_thread );
 913
 914     return val.b_bool;
 915 }
 916
 917 int libvlc_media_instance_can_pause( libvlc_media_instance_t *p_mi,
 918                                      libvlc_exception_t *p_e )
 919 {
 920     input_thread_t *p_input_thread;
 921     vlc_value_t val;
 922
 923     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 924     if ( !p_input_thread )
 925     {
 926         /* We do return the right value, no need to throw an exception */
 927         if( libvlc_exception_raised( p_e ) )
 928             libvlc_exception_clear( p_e );
 929         return VLC_FALSE;
 930     }
 931     var_Get( p_input_thread, "can-pause", &val );
 932     vlc_object_release( p_input_thread );
 933
 934     return val.b_bool;
 935 }