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 <vlc/libvlc.h>
  25 #include <vlc_demux.h>
  26 #include <vlc_input.h>
  27 #include "libvlc_internal.h"
  28 #include "libvlc.h"
  29
  30 /*
  31  * Release the associated input thread
  32  *
  33  * Object lock is NOT held.
  34  */
  35 static void release_input_thread( libvlc_media_instance_t *p_mi )
  36 {
  37     input_thread_t *p_input_thread;
  38
  39     if( !p_mi || p_mi->i_input_id == -1 )
  40         return;
  41
  42     p_input_thread = (input_thread_t*)vlc_object_get(
  43                                              p_mi->p_libvlc_instance->p_libvlc_int,
  44                                              p_mi->i_input_id );
  45
  46     p_mi->i_input_id = -1;
  47
  48     if( !p_input_thread )
  49         return;
  50
  51     /* release for previous vlc_object_get */
  52     vlc_object_release( p_input_thread );
  53
  54     /* release for initial p_input_thread yield (see _new()) */
  55     vlc_object_release( p_input_thread );
  56
  57     /* No one is tracking this input_thread appart us. Destroy it */
  58     if( p_mi->b_own_its_input_thread )
  59     {
  60         /* We owned this one */
  61         input_StopThread( p_input_thread );
  62         var_Destroy( p_input_thread, "drawable" );
  63         input_DestroyThread( p_input_thread );
  64     }
  65     else
  66     {
  67         /* XXX: hack the playlist doesn't retain the input thread,
  68          * so we did it for the playlist (see _new_from_input_thread),
  69          * revert that here. This will be deleted with the playlist API */
  70         vlc_object_release( p_input_thread );
  71     }
  72 }
  73
  74 /*
  75  * Retrieve the input thread. Be sure to release the object
  76  * once you are done with it. (libvlc Internal)
  77  *
  78  * Object lock is held.
  79  */
  80 input_thread_t *libvlc_get_input_thread( libvlc_media_instance_t *p_mi,
  81                                          libvlc_exception_t *p_e )
  82 {
  83     input_thread_t *p_input_thread;
  84
  85     vlc_mutex_lock( &p_mi->object_lock );
  86
  87     if( !p_mi || p_mi->i_input_id == -1 )
  88     {
  89         vlc_mutex_unlock( &p_mi->object_lock );
  90         RAISENULL( "Input is NULL" );
  91     }
  92
  93     p_input_thread = (input_thread_t*)vlc_object_get(
  94                                              p_mi->p_libvlc_instance->p_libvlc_int,
  95                                              p_mi->i_input_id );
  96     if( !p_input_thread )
  97     {
  98         vlc_mutex_unlock( &p_mi->object_lock );
  99         RAISENULL( "Input does not exist" );
 100     }
 101
 102     vlc_mutex_unlock( &p_mi->object_lock );
 103     return p_input_thread;
 104 }
 105
 106 /*
 107  * input_state_changed (Private) (input var "state" Callback)
 108  */
 109 static int
 110 input_state_changed( vlc_object_t * p_this, char const * psz_cmd,
 111                      vlc_value_t oldval, vlc_value_t newval,
 112                      void * p_userdata )
 113 {
 114     libvlc_media_instance_t * p_mi = p_userdata;
 115     libvlc_event_t event;
 116
 117     if( newval.i_int == oldval.i_int )
 118         return VLC_SUCCESS; /* No change since last time, don't propagate */
 119
 120     switch ( newval.i_int )
 121     {
 122         case END_S:
 123             event.type = libvlc_MediaInstanceReachedEnd;
 124             break;
 125         case PAUSE_S:
 126             event.type = libvlc_MediaInstancePaused;
 127             break;
 128         case PLAYING_S:
 129             event.type = libvlc_MediaInstancePlayed;
 130             break;
 131         default:
 132             return VLC_SUCCESS;
 133     }
 134
 135     libvlc_event_send( p_mi->p_event_manager, &event );
 136     return VLC_SUCCESS;
 137 }
 138
 139 /*
 140  * input_position_changed (Private) (input var "intf-change" Callback)
 141  */
 142 static int
 143 input_position_changed( vlc_object_t * p_this, char const * psz_cmd,
 144                      vlc_value_t oldval, vlc_value_t newval,
 145                      void * p_userdata )
 146 {
 147     libvlc_media_instance_t * p_mi = p_userdata;
 148     vlc_value_t val;
 149
 150     if (!strcmp(psz_cmd, "intf" /* "-change" no need to go further */))
 151     {
 152         input_thread_t * p_input = (input_thread_t *)p_this;
 153         var_Get( p_input, "position", &val );
 154
 155         if ((val.i_time % I64C(500000)) != 0)
 156             return VLC_SUCCESS; /* No need to have a better precision */
 157         var_Get( p_input, "state", &val );
 158
 159         if( val.i_int != PLAYING_S )
 160             return VLC_SUCCESS; /* Don't send the position while stopped */
 161     }
 162     else
 163         val.i_time = newval.i_time;
 164
 165     libvlc_event_t event;
 166     event.type = libvlc_MediaInstancePositionChanged;
 167     event.u.media_instance_position_changed.new_position = val.i_time;
 168
 169     libvlc_event_send( p_mi->p_event_manager, &event );
 170     return VLC_SUCCESS;
 171 }
 172
 173 /**************************************************************************
 174  * Create a Media Instance object
 175  **************************************************************************/
 176 libvlc_media_instance_t *
 177 libvlc_media_instance_new( libvlc_instance_t * p_libvlc_instance,
 178                            libvlc_exception_t * p_e )
 179 {
 180     libvlc_media_instance_t * p_mi;
 181
 182     if( !p_libvlc_instance )
 183     {
 184         libvlc_exception_raise( p_e, "invalid libvlc instance" );
 185         return NULL;
 186     }
 187
 188     p_mi = malloc( sizeof(libvlc_media_instance_t) );
 189     p_mi->p_md = NULL;
 190     p_mi->drawable = 0;
 191     p_mi->p_libvlc_instance = p_libvlc_instance;
 192     p_mi->i_input_id = -1;
 193     /* refcount strategy:
 194      * - All items created by _new start with a refcount set to 1
 195      * - Accessor _release decrease the refcount by 1, if after that
 196      *   operation the refcount is 0, the object is destroyed.
 197      * - Accessor _retain increase the refcount by 1 (XXX: to implement) */
 198     p_mi->i_refcount = 1;
 199     p_mi->b_own_its_input_thread = VLC_TRUE;
 200     /* object_lock strategy:
 201      * - No lock held in constructor
 202      * - Lock when accessing all variable this lock is held
 203      * - Lock when attempting to destroy the object the lock is also held */
 204     vlc_mutex_init( p_mi->p_libvlc_instance->p_libvlc_int,
 205                     &p_mi->object_lock );
 206     p_mi->p_event_manager = libvlc_event_manager_new( p_mi,
 207             p_libvlc_instance, p_e );
 208     if( libvlc_exception_raised( p_e ) )
 209     {
 210         free( p_mi );
 211         return NULL;
 212     }
 213
 214     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 215             libvlc_MediaInstanceReachedEnd, p_e );
 216     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 217             libvlc_MediaInstancePaused, p_e );
 218     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 219             libvlc_MediaInstancePlayed, p_e );
 220     libvlc_event_manager_register_event_type( p_mi->p_event_manager,
 221             libvlc_MediaInstancePositionChanged, p_e );
 222
 223     return p_mi;
 224 }
 225
 226 /**************************************************************************
 227  * Create a Media Instance object with a media descriptor
 228  **************************************************************************/
 229 libvlc_media_instance_t *
 230 libvlc_media_instance_new_from_media_descriptor(
 231                                     libvlc_media_descriptor_t * p_md,
 232                                     libvlc_exception_t *p_e )
 233 {
 234     libvlc_media_instance_t * p_mi;
 235     p_mi = libvlc_media_instance_new( p_md->p_libvlc_instance, p_e );
 236
 237     if( !p_mi )
 238         return NULL;
 239
 240     libvlc_media_descriptor_retain( p_md );
 241     p_mi->p_md = p_md;
 242
 243     return p_mi;
 244 }
 245
 246 /**************************************************************************
 247  * Create a new media instance object from an input_thread (Libvlc Internal)
 248  **************************************************************************/
 249 libvlc_media_instance_t * libvlc_media_instance_new_from_input_thread(
 250                                    struct libvlc_instance_t *p_libvlc_instance,
 251                                    input_thread_t *p_input,
 252                                    libvlc_exception_t *p_e )
 253 {
 254     libvlc_media_instance_t * p_mi;
 255
 256     if( !p_input )
 257     {
 258         libvlc_exception_raise( p_e, "invalid input thread" );
 259         return NULL;
 260     }
 261
 262     p_mi = libvlc_media_instance_new( p_libvlc_instance, p_e );
 263
 264     if( !p_mi )
 265         return NULL;
 266
 267     p_mi->p_md = libvlc_media_descriptor_new_from_input_item(
 268                     p_libvlc_instance,
 269                     input_GetItem( p_input ), p_e );
 270
 271     if( !p_mi->p_md )
 272     {
 273         libvlc_media_instance_destroy( p_mi );
 274         return NULL;
 275     }
 276
 277     p_mi->i_input_id = p_input->i_object_id;
 278     p_mi->b_own_its_input_thread = VLC_FALSE;
 279
 280     /* will be released in media_instance_release() */
 281     vlc_object_yield( p_input );
 282
 283     /* XXX: Hack as the playlist doesn't yield the input thread we retain
 284      * the input for the playlist. (see corresponding hack in _release) */
 285     vlc_object_yield( p_input );
 286
 287     return p_mi;
 288 }
 289
 290 /**************************************************************************
 291  * Destroy a Media Instance object (libvlc internal)
 292  *
 293  * Warning: No lock held here, but hey, this is internal.
 294  **************************************************************************/
 295 void libvlc_media_instance_destroy( libvlc_media_instance_t *p_mi )
 296 {
 297     input_thread_t *p_input_thread;
 298     libvlc_exception_t p_e;
 299
 300     libvlc_exception_init( &p_e );
 301
 302     if( !p_mi )
 303         return;
 304
 305     p_input_thread = libvlc_get_input_thread( p_mi, &p_e );
 306
 307     if( libvlc_exception_raised( &p_e ) )
 308     {
 309         libvlc_event_manager_release( p_mi->p_event_manager );
 310         libvlc_exception_clear( &p_e );
 311         free( p_mi );
 312         return; /* no need to worry about no input thread */
 313     }
 314     vlc_mutex_destroy( &p_mi->object_lock );
 315
 316     input_DestroyThread( p_input_thread );
 317
 318     libvlc_media_descriptor_release( p_mi->p_md );
 319
 320     free( p_mi );
 321 }
 322
 323 /**************************************************************************
 324  * Release a Media Instance object
 325  **************************************************************************/
 326 void libvlc_media_instance_release( libvlc_media_instance_t *p_mi )
 327 {
 328     if( !p_mi )
 329         return;
 330
 331     vlc_mutex_lock( &p_mi->object_lock );
 332
 333     p_mi->i_refcount--;
 334
 335     if( p_mi->i_refcount > 0 )
 336     {
 337         vlc_mutex_unlock( &p_mi->object_lock );
 338         return;
 339     }
 340     vlc_mutex_unlock( &p_mi->object_lock );
 341     vlc_mutex_destroy( &p_mi->object_lock );
 342
 343     release_input_thread( p_mi );
 344
 345     libvlc_event_manager_release( p_mi->p_event_manager );
 346
 347     libvlc_media_descriptor_release( p_mi->p_md );
 348
 349     free( p_mi );
 350 }
 351
 352 /**************************************************************************
 353  * Retain a Media Instance object
 354  **************************************************************************/
 355 void libvlc_media_instance_retain( libvlc_media_instance_t *p_mi )
 356 {
 357     if( !p_mi )
 358         return;
 359
 360     p_mi->i_refcount++;
 361 }
 362
 363 /**************************************************************************
 364  * Set the Media descriptor associated with the instance
 365  **************************************************************************/
 366 void libvlc_media_instance_set_media_descriptor(
 367                             libvlc_media_instance_t *p_mi,
 368                             libvlc_media_descriptor_t *p_md,
 369                             libvlc_exception_t *p_e )
 370 {
 371     (void)p_e;
 372
 373     if( !p_mi )
 374         return;
 375
 376     vlc_mutex_lock( &p_mi->object_lock );
 377
 378     release_input_thread( p_mi );
 379
 380     libvlc_media_descriptor_release( p_mi->p_md );
 381
 382     if( !p_md )
 383     {
 384         p_mi->p_md = NULL;
 385         vlc_mutex_unlock( &p_mi->object_lock );
 386         return; /* It is ok to pass a NULL md */
 387     }
 388
 389     libvlc_media_descriptor_retain( p_md );
 390     p_mi->p_md = p_md;
 391
 392     /* The policy here is to ignore that we were created using a different
 393      * libvlc_instance, because we don't really care */
 394     p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
 395
 396     vlc_mutex_unlock( &p_mi->object_lock );
 397 }
 398
 399 /**************************************************************************
 400  * Get the Media descriptor associated with the instance
 401  **************************************************************************/
 402 libvlc_media_descriptor_t *
 403 libvlc_media_instance_get_media_descriptor(
 404                             libvlc_media_instance_t *p_mi,
 405                             libvlc_exception_t *p_e )
 406 {
 407     (void)p_e;
 408
 409     if( !p_mi->p_md )
 410         return NULL;
 411
 412     libvlc_media_descriptor_retain( p_mi->p_md );
 413     return p_mi->p_md;
 414 }
 415
 416 /**************************************************************************
 417  * Get the event Manager
 418  **************************************************************************/
 419 libvlc_event_manager_t *
 420 libvlc_media_instance_event_manager(
 421                             libvlc_media_instance_t *p_mi,
 422                             libvlc_exception_t *p_e )
 423 {
 424     (void)p_e;
 425
 426     return p_mi->p_event_manager;
 427 }
 428
 429 /**************************************************************************
 430  * Play
 431  **************************************************************************/
 432 void libvlc_media_instance_play( libvlc_media_instance_t *p_mi,
 433                                  libvlc_exception_t *p_e )
 434 {
 435     input_thread_t * p_input_thread;
 436
 437     if( (p_input_thread = libvlc_get_input_thread( p_mi, p_e )) )
 438     {
 439         /* A thread alread exists, send it a play message */
 440         input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
 441         vlc_object_release( p_input_thread );
 442         return;
 443     }
 444
 445     /* Ignore previous exception */
 446     libvlc_exception_clear( p_e );
 447
 448     vlc_mutex_lock( &p_mi->object_lock );
 449
 450     if( !p_mi->p_md )
 451     {
 452         libvlc_exception_raise( p_e, "no associated media descriptor" );
 453         vlc_mutex_unlock( &p_mi->object_lock );
 454         return;
 455     }
 456
 457     p_input_thread = input_CreateThread( p_mi->p_libvlc_instance->p_libvlc_int,
 458                                          p_mi->p_md->p_input_item );
 459     p_mi->i_input_id = p_input_thread->i_object_id;
 460
 461     if( p_mi->drawable )
 462     {
 463         vlc_value_t val;
 464         val.i_int = p_mi->drawable;
 465         var_Create( p_input_thread, "drawable", VLC_VAR_DOINHERIT );
 466         var_Set( p_input_thread, "drawable", val );
 467     }
 468     var_AddCallback( p_input_thread, "state", input_state_changed, p_mi );
 469     var_AddCallback( p_input_thread, "intf-change", input_position_changed, p_mi );
 470
 471     /* will be released in media_instance_release() */
 472     vlc_object_yield( p_input_thread );
 473
 474     vlc_mutex_unlock( &p_mi->object_lock );
 475 }
 476
 477 /**************************************************************************
 478  * Pause
 479  **************************************************************************/
 480 void libvlc_media_instance_pause( libvlc_media_instance_t *p_mi,
 481                                   libvlc_exception_t *p_e )
 482 {
 483     input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 484
 485     if( !p_input_thread )
 486         return;
 487
 488     input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
 489     vlc_object_release( p_input_thread );
 490 }
 491
 492 /**************************************************************************
 493  * Stop
 494  **************************************************************************/
 495 void libvlc_media_instance_stop( libvlc_media_instance_t *p_mi,
 496                                  libvlc_exception_t *p_e )
 497 {
 498     if( p_mi->b_own_its_input_thread )
 499         release_input_thread( p_mi ); /* This will stop the input thread */
 500     else
 501     {
 502         input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 503
 504         if( !p_input_thread )
 505             return;
 506
 507         input_StopThread( p_input_thread );
 508         vlc_object_release( p_input_thread );
 509     }
 510 }
 511
 512 /**************************************************************************
 513  * Set Drawable
 514  **************************************************************************/
 515 void libvlc_media_instance_set_drawable( libvlc_media_instance_t *p_mi,
 516                                          libvlc_drawable_t drawable,
 517                                          libvlc_exception_t *p_e )
 518 {
 519     p_mi->drawable = drawable;
 520 }
 521
 522 /**************************************************************************
 523  * Getters for stream information
 524  **************************************************************************/
 525 vlc_int64_t libvlc_media_instance_get_length(
 526                              libvlc_media_instance_t *p_mi,
 527                              libvlc_exception_t *p_e )
 528 {
 529     input_thread_t *p_input_thread;
 530     vlc_value_t val;
 531
 532     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 533     if( !p_input_thread )
 534         return -1;
 535
 536     var_Get( p_input_thread, "length", &val );
 537     vlc_object_release( p_input_thread );
 538
 539     return (val.i_time+500LL)/1000LL;
 540 }
 541
 542 vlc_int64_t libvlc_media_instance_get_time(
 543                                    libvlc_media_instance_t *p_mi,
 544                                    libvlc_exception_t *p_e )
 545 {
 546     input_thread_t *p_input_thread;
 547     vlc_value_t val;
 548
 549     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 550     if( !p_input_thread )
 551         return -1;
 552
 553     var_Get( p_input_thread , "time", &val );
 554     vlc_object_release( p_input_thread );
 555     return (val.i_time+500LL)/1000LL;
 556 }
 557
 558 void libvlc_media_instance_set_time(
 559                                  libvlc_media_instance_t *p_mi,
 560                                  vlc_int64_t time,
 561                                  libvlc_exception_t *p_e )
 562 {
 563     input_thread_t *p_input_thread;
 564     vlc_value_t value;
 565
 566     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 567     if( !p_input_thread )
 568         return;
 569
 570     value.i_time = time*1000LL;
 571     var_Set( p_input_thread, "time", value );
 572     vlc_object_release( p_input_thread );
 573 }
 574
 575 void libvlc_media_instance_set_position(
 576                                 libvlc_media_instance_t *p_mi,
 577                                 float position,
 578                                 libvlc_exception_t *p_e )
 579 {
 580     input_thread_t *p_input_thread;
 581     vlc_value_t val;
 582     val.f_float = position;
 583
 584     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 585     if( !p_input_thread )
 586         return;
 587
 588     var_Set( p_input_thread, "position", val );
 589     vlc_object_release( p_input_thread );
 590 }
 591
 592 float libvlc_media_instance_get_position(
 593                                  libvlc_media_instance_t *p_mi,
 594                                  libvlc_exception_t *p_e )
 595 {
 596     input_thread_t *p_input_thread;
 597     vlc_value_t val;
 598
 599     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 600     if( !p_input_thread )
 601         return -1.0;
 602
 603     var_Get( p_input_thread, "position", &val );
 604     vlc_object_release( p_input_thread );
 605
 606     return val.f_float;
 607 }
 608
 609 void libvlc_media_instance_set_chapter(
 610                                  libvlc_media_instance_t *p_mi,
 611                                  int chapter,
 612                                  libvlc_exception_t *p_e )
 613 {
 614     input_thread_t *p_input_thread;
 615     vlc_value_t val;
 616     val.i_int = chapter;
 617
 618     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 619     if( !p_input_thread )
 620         return;
 621
 622     var_Set( p_input_thread, "chapter", val );
 623     vlc_object_release( p_input_thread );
 624 }
 625
 626 int libvlc_media_instance_get_chapter(
 627                                  libvlc_media_instance_t *p_mi,
 628                                  libvlc_exception_t *p_e )
 629 {
 630     input_thread_t *p_input_thread;
 631     vlc_value_t val;
 632
 633     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 634     if( !p_input_thread )
 635         return -1.0;
 636
 637     var_Get( p_input_thread, "chapter", &val );
 638     vlc_object_release( p_input_thread );
 639
 640     return val.i_int;
 641 }
 642
 643 int libvlc_media_instance_get_chapter_count(
 644                                  libvlc_media_instance_t *p_mi,
 645                                  libvlc_exception_t *p_e )
 646 {
 647     input_thread_t *p_input_thread;
 648     vlc_value_t val;
 649
 650     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 651     if( !p_input_thread )
 652         return -1.0;
 653
 654     var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
 655     vlc_object_release( p_input_thread );
 656
 657     return val.i_int;
 658 }
 659
 660 float libvlc_media_instance_get_fps(
 661                                  libvlc_media_instance_t *p_mi,
 662                                  libvlc_exception_t *p_e)
 663 {
 664     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 665     double f_fps = 0.0;
 666
 667     if( p_input_thread )
 668     {
 669         if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
 670             f_fps = 0.0;
 671         vlc_object_release( p_input_thread );
 672     }
 673     return f_fps;
 674 }
 675
 676 vlc_bool_t libvlc_media_instance_will_play(
 677                                  libvlc_media_instance_t *p_mi,
 678                                  libvlc_exception_t *p_e)
 679 {
 680     input_thread_t *p_input_thread =
 681                             libvlc_get_input_thread ( p_mi, p_e);
 682     if ( !p_input_thread )
 683         return VLC_FALSE;
 684
 685     if ( !p_input_thread->b_die && !p_input_thread->b_dead )
 686     {
 687         vlc_object_release( p_input_thread );
 688         return VLC_TRUE;
 689     }
 690     vlc_object_release( p_input_thread );
 691     return VLC_FALSE;
 692 }
 693
 694 void libvlc_media_instance_set_rate(
 695                                  libvlc_media_instance_t *p_mi,
 696                                  float rate,
 697                                  libvlc_exception_t *p_e )
 698 {
 699     input_thread_t *p_input_thread;
 700     vlc_value_t val;
 701
 702     if( rate <= 0 )
 703         RAISEVOID( "Rate value is invalid" );
 704
 705     val.i_int = 1000.0f/rate;
 706
 707     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 708     if ( !p_input_thread )
 709         return;
 710
 711     var_Set( p_input_thread, "rate", val );
 712     vlc_object_release( p_input_thread );
 713 }
 714
 715 float libvlc_media_instance_get_rate(
 716                                  libvlc_media_instance_t *p_mi,
 717                                  libvlc_exception_t *p_e )
 718 {
 719     input_thread_t *p_input_thread;
 720     vlc_value_t val;
 721
 722     p_input_thread = libvlc_get_input_thread ( p_mi, p_e);
 723     if ( !p_input_thread )
 724         return -1.0;
 725
 726     var_Get( p_input_thread, "rate", &val );
 727     vlc_object_release( p_input_thread );
 728
 729     return (float)1000.0f/val.i_int;
 730 }
 731
 732 static const libvlc_state_t vlc_to_libvlc_state[] =
 733 {
 734     [INIT_S]        = libvlc_Opening,
 735     [OPENING_S]     = libvlc_Opening,
 736     [BUFFERING_S]   = libvlc_Buffering,
 737     [PLAYING_S]     = libvlc_Playing,
 738     [PAUSE_S]       = libvlc_Paused,
 739     [END_S]         = libvlc_Ended,
 740     [ERROR_S]       = libvlc_Error,
 741 };
 742
 743 libvlc_state_t libvlc_media_instance_get_state(
 744                                  libvlc_media_instance_t *p_mi,
 745                                  libvlc_exception_t *p_e )
 746 {
 747     input_thread_t *p_input_thread;
 748     vlc_value_t val;
 749
 750     p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 751     if ( !p_input_thread )
 752         return libvlc_Stopped;
 753
 754     var_Get( p_input_thread, "state", &val );
 755     vlc_object_release( p_input_thread );
 756
 757     if( val.i_int < 0 || val.i_int > 6 )
 758         return libvlc_Stopped;
 759
 760     return vlc_to_libvlc_state[val.i_int];
 761 }