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

   1 /*****************************************************************************
   2  * video.c: libvlc new API video functions
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  *
   6  * $Id$
   7  *
   8  * Authors: Clément Stenac <zorglub@videolan.org>
   9  *          Filippo Carone <littlejohn@videolan.org>
  10  *          Jean-Paul Saman <jpsaman _at_ m2x _dot_ nl>
  11  *          Damien Fouilleul <damienf a_t videolan dot org>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  26  *****************************************************************************/
  27
  28 #include "libvlc_internal.h"
  29
  30 #include <vlc/libvlc.h>
  31 #include <vlc_input.h>
  32 #include <vlc_vout.h>
  33
  34 /*
  35  * Remember to release the returned vout_thread_t.
  36  */
  37 static vout_thread_t *GetVout( libvlc_media_player_t *p_mi,
  38                                libvlc_exception_t *p_exception )
  39 {
  40     input_thread_t *p_input = libvlc_get_input_thread( p_mi, p_exception );
  41     vout_thread_t *p_vout = NULL;
  42
  43     if( p_input )
  44     {
  45         p_vout = input_GetVout( p_input );
  46         if( !p_vout )
  47         {
  48             libvlc_exception_raise( p_exception, "No active video output" );
  49         }
  50         vlc_object_release( p_input );
  51     }
  52     return p_vout;
  53 }
  54
  55 /**********************************************************************
  56  * Exported functions
  57  **********************************************************************/
  58
  59 void libvlc_set_fullscreen( libvlc_media_player_t *p_mi, int b_fullscreen,
  60                             libvlc_exception_t *p_e )
  61 {
  62     /* We only work on the first vout */
  63     vout_thread_t *p_vout = GetVout( p_mi, p_e );
  64
  65     /* GetVout will raise the exception for us */
  66     if( !p_vout ) return;
  67
  68     var_SetBool( p_vout, "fullscreen", b_fullscreen );
  69
  70     vlc_object_release( p_vout );
  71 }
  72
  73 int libvlc_get_fullscreen( libvlc_media_player_t *p_mi,
  74                             libvlc_exception_t *p_e )
  75 {
  76     /* We only work on the first vout */
  77     vout_thread_t *p_vout = GetVout( p_mi, p_e );
  78     int i_ret;
  79
  80     /* GetVout will raise the exception for us */
  81     if( !p_vout ) return 0;
  82
  83     i_ret = var_GetBool( p_vout, "fullscreen" );
  84
  85     vlc_object_release( p_vout );
  86
  87     return i_ret;
  88 }
  89
  90 void libvlc_toggle_fullscreen( libvlc_media_player_t *p_mi,
  91                                libvlc_exception_t *p_e )
  92 {
  93     /* We only work on the first vout */
  94     vout_thread_t *p_vout = GetVout( p_mi, p_e );
  95     bool ret;
  96
  97     /* GetVout will raise the exception for us */
  98     if( !p_vout ) return;
  99
 100     ret = var_GetBool( p_vout, "fullscreen" );
 101     var_SetBool( p_vout, "fullscreen", !ret );
 102
 103     vlc_object_release( p_vout );
 104 }
 105
 106 void
 107 libvlc_video_take_snapshot( libvlc_media_player_t *p_mi, const char *psz_filepath,
 108         unsigned int i_width, unsigned int i_height, libvlc_exception_t *p_e )
 109 {
 110     vout_thread_t *p_vout;
 111
 112     /* The filepath must be not NULL */
 113     if( !psz_filepath )
 114     {
 115         libvlc_exception_raise( p_e, "filepath is null" );
 116         return;
 117     }
 118     /* We must have an input */
 119     if( !p_mi->p_input_thread )
 120     {
 121         libvlc_exception_raise( p_e, "Input does not exist" );
 122         return;
 123     }
 124
 125     /* GetVout will raise the exception for us */
 126     p_vout = GetVout( p_mi, p_e );
 127     if( !p_vout ) return;
 128
 129     var_SetInteger( p_vout, "snapshot-width", i_width );
 130     var_SetInteger( p_vout, "snapshot-height", i_height );
 131
 132     var_SetString( p_vout, "snapshot-path", psz_filepath );
 133     var_SetString( p_vout, "snapshot-format", "png" );
 134
 135     var_TriggerCallback( p_vout, "video-snapshot" );
 136     vlc_object_release( p_vout );
 137 }
 138
 139 int libvlc_video_get_height( libvlc_media_player_t *p_mi,
 140                              libvlc_exception_t *p_e )
 141 {
 142     int height;
 143
 144     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 145     if( !p_vout ) return 0;
 146
 147     height = p_vout->i_window_height;
 148
 149     vlc_object_release( p_vout );
 150
 151     return height;
 152 }
 153
 154 int libvlc_video_get_width( libvlc_media_player_t *p_mi,
 155                             libvlc_exception_t *p_e )
 156 {
 157     int width;
 158
 159     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 160     if( !p_vout ) return 0;
 161
 162     width = p_vout->i_window_width;
 163
 164     vlc_object_release( p_vout );
 165
 166     return width;
 167 }
 168
 169 int libvlc_media_player_has_vout( libvlc_media_player_t *p_mi,
 170                                      libvlc_exception_t *p_e )
 171 {
 172     input_thread_t *p_input_thread = libvlc_get_input_thread(p_mi, p_e);
 173     bool has_vout = false;
 174
 175     if( p_input_thread )
 176     {
 177         vout_thread_t *p_vout;
 178
 179         p_vout = input_GetVout( p_input_thread );
 180         if( p_vout )
 181         {
 182             has_vout = true;
 183             vlc_object_release( p_vout );
 184         }
 185         vlc_object_release( p_input_thread );
 186     }
 187     return has_vout;
 188 }
 189
 190 int libvlc_video_reparent( libvlc_media_player_t *p_mi, libvlc_drawable_t d,
 191                            libvlc_exception_t *p_e )
 192 {
 193     (void) p_mi; (void) d;
 194     libvlc_exception_raise(p_e, "Reparenting not supported");
 195     return -1;
 196 }
 197
 198 void libvlc_video_resize( libvlc_media_player_t *p_mi, int width, int height, libvlc_exception_t *p_e )
 199 {
 200     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 201     if( p_vout )
 202     {
 203         vout_Control( p_vout, VOUT_SET_SIZE, width, height );
 204         vlc_object_release( p_vout );
 205     }
 206 }
 207
 208 void libvlc_video_redraw_rectangle( libvlc_media_player_t *p_mi,
 209                            const libvlc_rectangle_t *area,
 210                            libvlc_exception_t *p_e )
 211 {
 212 #ifdef __APPLE__
 213     if( (NULL != area)
 214      && ((area->bottom - area->top) > 0)
 215      && ((area->right - area->left) > 0) )
 216     {
 217         vout_thread_t *p_vout = GetVout( p_mi, p_e );
 218         if( p_vout )
 219         {
 220             /* tell running vout to redraw area */
 221             vout_Control( p_vout , VOUT_REDRAW_RECT,
 222                                area->top, area->left, area->bottom, area->right );
 223             vlc_object_release( p_vout );
 224         }
 225     }
 226 #else
 227     (void) p_mi; (void) area; (void) p_e;
 228 #endif
 229 }
 230
 231 /* global video settings */
 232
 233 /* Deprecated use libvlc_media_player_set_drawable() */
 234 void libvlc_video_set_parent( libvlc_instance_t *p_instance, libvlc_drawable_t d,
 235                               libvlc_exception_t *p_e )
 236 {
 237     /* set as default for future vout instances */
 238 #ifdef WIN32
 239     vlc_value_t val;
 240
 241     if( sizeof(HWND) > sizeof(libvlc_drawable_t) )
 242         return; /* BOOM! we told you not to use this function! */
 243     val.p_address = (void *)(uintptr_t)d;
 244     var_Set( p_instance->p_libvlc_int, "drawable-hwnd", val );
 245 #elif defined(__APPLE__)
 246     var_SetInteger( p_instance->p_libvlc_int, "drawable-agl", d );
 247 #else
 248     var_SetInteger( p_instance->p_libvlc_int, "drawable-xid", d );
 249 #endif
 250
 251     libvlc_media_player_t *p_mi = libvlc_playlist_get_media_player(p_instance, p_e);
 252     if( p_mi )
 253     {
 254         libvlc_media_player_set_drawable( p_mi, d, p_e );
 255         libvlc_media_player_release(p_mi);
 256     }
 257 }
 258
 259 /* Deprecated use libvlc_media_player_get_drawable() */
 260 libvlc_drawable_t libvlc_video_get_parent( libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
 261 {
 262     VLC_UNUSED(p_e);
 263
 264 #ifdef WIN32
 265     vlc_value_t val;
 266
 267     if( sizeof(HWND) > sizeof(libvlc_drawable_t) )
 268         return 0;
 269     var_Get( p_instance->p_libvlc_int, "drawable-hwnd", &val );
 270     return (uintptr_t)val.p_address;
 271 #elif defined(__APPLE__)
 272     return var_GetInteger( p_instance->p_libvlc_int, "drawable-agl" );
 273 #else
 274     return var_GetInteger( p_instance->p_libvlc_int, "drawable-xid" );
 275 #endif
 276 }
 277
 278 void libvlc_video_set_size( libvlc_instance_t *p_instance, int width, int height,
 279                            libvlc_exception_t *p_e )
 280 {
 281     /* set as default for future vout instances */
 282     config_PutInt(p_instance->p_libvlc_int, "width", width);
 283     config_PutInt(p_instance->p_libvlc_int, "height", height);
 284
 285     libvlc_media_player_t *p_mi = libvlc_playlist_get_media_player(p_instance, p_e);
 286     if( p_mi )
 287     {
 288         vout_thread_t *p_vout = GetVout( p_mi, p_e );
 289         if( p_vout )
 290         {
 291             /* tell running vout to re-size */
 292             vout_Control( p_vout , VOUT_SET_SIZE, width, height);
 293             vlc_object_release( p_vout );
 294         }
 295         libvlc_media_player_release(p_mi);
 296     }
 297 }
 298
 299 void libvlc_video_set_viewport( libvlc_instance_t *p_instance, libvlc_media_player_t *p_mi,
 300                             const libvlc_rectangle_t *view, const libvlc_rectangle_t *clip,
 301                            libvlc_exception_t *p_e )
 302 {
 303 #ifdef __APPLE__
 304     if( !view )
 305     {
 306         libvlc_exception_raise( p_e, "viewport is NULL" );
 307         return;
 308     }
 309
 310     /* if clip is NULL, then use view rectangle as clip */
 311     if( !clip )
 312         clip = view;
 313
 314     /* set as default for future vout instances */
 315     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-top", view->top );
 316     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-left", view->left );
 317     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-bottom", view->bottom );
 318     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-right", view->right );
 319     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-top", clip->top );
 320     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-left", clip->left );
 321     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-bottom", clip->bottom );
 322     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-right", clip->right );
 323
 324     if( p_mi )
 325     {
 326         vout_thread_t *p_vout = GetVout( p_mi, p_e );
 327         if( p_vout )
 328         {
 329             /* change viewport for running vout */
 330             vout_Control( p_vout, VOUT_SET_VIEWPORT,
 331                                view->top, view->left, view->bottom, view->right,
 332                                clip->top, clip->left, clip->bottom, clip->right );
 333             vlc_object_release( p_vout );
 334         }
 335     }
 336 #else
 337     (void) p_instance; (void) p_mi; (void) view; (void) clip; (void) p_e;
 338 #endif
 339 }
 340
 341 float libvlc_video_get_scale( libvlc_media_player_t *p_mp,
 342                               libvlc_exception_t *p_e )
 343 {
 344     vout_thread_t *p_vout = GetVout( p_mp, p_e );
 345     if( !p_vout )
 346         return 0.;
 347
 348     float f_scale = var_GetFloat( p_vout, "scale" );
 349     if( var_GetBool( p_vout, "autoscale" ) )
 350         f_scale = 0.;
 351     vlc_object_release( p_vout );
 352     return f_scale;
 353 }
 354
 355 void libvlc_video_set_scale( libvlc_media_player_t *p_mp, float f_scale,
 356                              libvlc_exception_t *p_e )
 357 {
 358     vout_thread_t *p_vout = GetVout( p_mp, p_e );
 359     if( !p_vout )
 360         return;
 361
 362     if( f_scale != 0. )
 363         var_SetFloat( p_vout, "scale", f_scale );
 364     var_SetBool( p_vout, "autoscale", f_scale != 0. );
 365     vlc_object_release( p_vout );
 366 }
 367
 368 char *libvlc_video_get_aspect_ratio( libvlc_media_player_t *p_mi,
 369                                      libvlc_exception_t *p_e )
 370 {
 371     char *psz_aspect = 0;
 372     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 373
 374     if( !p_vout ) return 0;
 375
 376     psz_aspect = var_GetNonEmptyString( p_vout, "aspect-ratio" );
 377     vlc_object_release( p_vout );
 378     return psz_aspect ? psz_aspect : strdup("");
 379 }
 380
 381 void libvlc_video_set_aspect_ratio( libvlc_media_player_t *p_mi,
 382                                     char *psz_aspect, libvlc_exception_t *p_e )
 383 {
 384     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 385     int i_ret = -1;
 386
 387     if( !p_vout ) return;
 388
 389     i_ret = var_SetString( p_vout, "aspect-ratio", psz_aspect );
 390     if( i_ret )
 391         libvlc_exception_raise( p_e,
 392                         "Unexpected error while setting aspect-ratio value" );
 393
 394     vlc_object_release( p_vout );
 395 }
 396
 397 int libvlc_video_get_spu( libvlc_media_player_t *p_mi,
 398                           libvlc_exception_t *p_e )
 399 {
 400     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 401     vlc_value_t val_list;
 402     vlc_value_t val;
 403     int i_spu = -1;
 404     int i_ret = -1;
 405     int i;
 406
 407     if( !p_input_thread ) return -1;
 408
 409     i_ret = var_Get( p_input_thread, "spu-es", &val );
 410     if( i_ret < 0 )
 411     {
 412         libvlc_exception_raise( p_e, "Getting subtitle information failed" );
 413         vlc_object_release( p_input_thread );
 414         return i_ret;
 415     }
 416
 417     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 418     for( i = 0; i < val_list.p_list->i_count; i++ )
 419     {
 420         if( val.i_int == val_list.p_list->p_values[i].i_int )
 421         {
 422             i_spu = i;
 423             break;
 424         }
 425     }
 426     var_Change( p_input_thread, "spu-es", VLC_VAR_FREELIST, &val_list, NULL );
 427     vlc_object_release( p_input_thread );
 428     return i_spu;
 429 }
 430
 431 int libvlc_video_get_spu_count( libvlc_media_player_t *p_mi,
 432                                 libvlc_exception_t *p_e )
 433 {
 434     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 435     vlc_value_t val_list;
 436     int i_spu_count;
 437
 438     if( !p_input_thread )
 439         return -1;
 440
 441     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 442     i_spu_count = val_list.p_list->i_count;
 443     var_Change( p_input_thread, "spu-es", VLC_VAR_FREELIST, &val_list, NULL );
 444
 445     vlc_object_release( p_input_thread );
 446     return i_spu_count;
 447 }
 448
 449 libvlc_track_description_t *
 450         libvlc_video_get_spu_description( libvlc_media_player_t *p_mi,
 451                                           libvlc_exception_t *p_e )
 452 {
 453     return libvlc_get_track_description( p_mi, "spu-es", p_e);
 454 }
 455
 456 void libvlc_video_set_spu( libvlc_media_player_t *p_mi, int i_spu,
 457                            libvlc_exception_t *p_e )
 458 {
 459     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 460     vlc_value_t val_list;
 461     vlc_value_t newval;
 462     int i_ret = -1;
 463
 464     if( !p_input_thread ) return;
 465
 466     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 467
 468     if( val_list.p_list->i_count == 0 )
 469     {
 470         libvlc_exception_raise( p_e, "Subtitle value out of range" );
 471         goto end;
 472     }
 473
 474     if( (i_spu < 0) && (i_spu > val_list.p_list->i_count) )
 475     {
 476         libvlc_exception_raise( p_e, "Subtitle value out of range" );
 477         goto end;
 478     }
 479
 480     newval = val_list.p_list->p_values[i_spu];
 481     i_ret = var_Set( p_input_thread, "spu-es", newval );
 482     if( i_ret < 0 )
 483     {
 484         libvlc_exception_raise( p_e, "Setting subtitle value failed" );
 485     }
 486
 487 end:
 488     var_Change( p_input_thread, "spu-es", VLC_VAR_FREELIST, &val_list, NULL );
 489     vlc_object_release( p_input_thread );
 490 }
 491
 492 int libvlc_video_set_subtitle_file( libvlc_media_player_t *p_mi,
 493                                     char *psz_subtitle,
 494                                     libvlc_exception_t *p_e )
 495 {
 496     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 497     bool b_ret = false;
 498
 499     if( p_input_thread )
 500     {
 501         if( !input_AddSubtitle( p_input_thread, psz_subtitle, true ) )
 502             b_ret = true;
 503         vlc_object_release( p_input_thread );
 504     }
 505     return b_ret;
 506 }
 507
 508 libvlc_track_description_t *
 509         libvlc_video_get_title_description( libvlc_media_player_t *p_mi,
 510                                             libvlc_exception_t * p_e )
 511 {
 512     return libvlc_get_track_description( p_mi, "title", p_e);
 513 }
 514
 515 libvlc_track_description_t *
 516         libvlc_video_get_chapter_description( libvlc_media_player_t *p_mi,
 517                                               int i_title,
 518                                               libvlc_exception_t *p_e )
 519 {
 520     char psz_title[12];
 521     sprintf( psz_title,  "title %2i", i_title );
 522     return libvlc_get_track_description( p_mi, psz_title, p_e);
 523 }
 524
 525 char *libvlc_video_get_crop_geometry( libvlc_media_player_t *p_mi,
 526                                    libvlc_exception_t *p_e )
 527 {
 528     char *psz_geometry = 0;
 529     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 530
 531     if( !p_vout ) return 0;
 532
 533     psz_geometry = var_GetNonEmptyString( p_vout, "crop" );
 534     vlc_object_release( p_vout );
 535     return psz_geometry ? psz_geometry : strdup("");
 536 }
 537
 538 void libvlc_video_set_crop_geometry( libvlc_media_player_t *p_mi,
 539                                     char *psz_geometry, libvlc_exception_t *p_e )
 540 {
 541     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 542     int i_ret = -1;
 543
 544     if( !p_vout ) return;
 545
 546     i_ret = var_SetString( p_vout, "crop", psz_geometry );
 547     if( i_ret )
 548         libvlc_exception_raise( p_e,
 549                         "Unexpected error while setting crop geometry" );
 550
 551     vlc_object_release( p_vout );
 552 }
 553
 554 int libvlc_video_get_teletext( libvlc_media_player_t *p_mi,
 555                                libvlc_exception_t *p_e )
 556 {
 557     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 558     vlc_object_t *p_vbi;
 559     int i_ret = -1;
 560
 561     if( !p_vout ) return i_ret;
 562
 563     p_vbi = (vlc_object_t *) vlc_object_find_name( p_vout, "zvbi",
 564                                                    FIND_CHILD );
 565     if( p_vbi )
 566     {
 567         i_ret = var_GetInteger( p_vbi, "vbi-page" );
 568         vlc_object_release( p_vbi );
 569     }
 570
 571     vlc_object_release( p_vout );
 572     return i_ret;
 573 }
 574
 575 void libvlc_video_set_teletext( libvlc_media_player_t *p_mi, int i_page,
 576                                 libvlc_exception_t *p_e )
 577 {
 578     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 579     vlc_object_t *p_vbi;
 580     int i_ret = -1;
 581
 582     if( !p_vout ) return;
 583
 584     p_vbi = (vlc_object_t *) vlc_object_find_name( p_vout, "zvbi",
 585                                                    FIND_CHILD );
 586     if( p_vbi )
 587     {
 588         i_ret = var_SetInteger( p_vbi, "vbi-page", i_page );
 589         vlc_object_release( p_vbi );
 590         if( i_ret )
 591             libvlc_exception_raise( p_e,
 592                             "Unexpected error while setting teletext page" );
 593     }
 594     vlc_object_release( p_vout );
 595 }
 596
 597 void libvlc_toggle_teletext( libvlc_media_player_t *p_mi,
 598                              libvlc_exception_t *p_e )
 599 {
 600     input_thread_t *p_input_thread;
 601     vlc_object_t *p_vbi;
 602     int i_ret;
 603
 604     p_input_thread = libvlc_get_input_thread(p_mi, p_e);
 605     if( !p_input_thread ) return;
 606
 607     if( var_CountChoices( p_input_thread, "teletext-es" ) <= 0 )
 608     {
 609         vlc_object_release( p_input_thread );
 610         return;
 611     }
 612     const bool b_selected = var_GetInteger( p_input_thread, "teletext-es" ) >= 0;
 613
 614     p_vbi = (vlc_object_t *)vlc_object_find_name( p_input_thread, "zvbi",
 615                                                   FIND_CHILD );
 616     if( p_vbi )
 617     {
 618         if( b_selected )
 619         {
 620             /* FIXME Gni, why that ? */
 621             i_ret = var_SetInteger( p_vbi, "vbi-page",
 622                                     var_GetInteger( p_vbi, "vbi-page" ) );
 623             if( i_ret )
 624                 libvlc_exception_raise( p_e,
 625                                 "Unexpected error while setting teletext page" );
 626         }
 627         else
 628         {
 629             /* FIXME Gni^2 */
 630             i_ret = var_SetBool( p_vbi, "vbi-opaque",
 631                                  !var_GetBool( p_vbi, "vbi-opaque" ) );
 632             if( i_ret )
 633                 libvlc_exception_raise( p_e,
 634                                 "Unexpected error while setting teletext transparency" );
 635         }
 636         vlc_object_release( p_vbi );
 637     }
 638     else if( b_selected )
 639     {
 640         var_SetInteger( p_input_thread, "spu-es", -1 );
 641     }
 642     else
 643     {
 644         vlc_value_t list;
 645         if( !var_Change( p_input_thread, "teletext-es", VLC_VAR_GETLIST, &list, NULL ) )
 646         {
 647             if( list.p_list->i_count > 0 )
 648                 var_SetInteger( p_input_thread, "spu-es", list.p_list->p_values[0].i_int );
 649
 650             var_Change( p_input_thread, "teletext-es", VLC_VAR_FREELIST, &list, NULL );
 651         }
 652     }
 653     vlc_object_release( p_input_thread );
 654 }
 655
 656 int libvlc_video_get_track_count( libvlc_media_player_t *p_mi,
 657                                   libvlc_exception_t *p_e )
 658 {
 659     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 660     vlc_value_t val_list;
 661     int i_track_count;
 662
 663     if( !p_input_thread )
 664         return -1;
 665
 666     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 667     i_track_count = val_list.p_list->i_count;
 668     var_Change( p_input_thread, "video-es", VLC_VAR_FREELIST, &val_list, NULL );
 669
 670     vlc_object_release( p_input_thread );
 671     return i_track_count;
 672 }
 673
 674 libvlc_track_description_t *
 675         libvlc_video_get_track_description( libvlc_media_player_t *p_mi,
 676                                             libvlc_exception_t *p_e )
 677 {
 678     return libvlc_get_track_description( p_mi, "video-es", p_e);
 679 }
 680
 681 int libvlc_video_get_track( libvlc_media_player_t *p_mi,
 682                             libvlc_exception_t *p_e )
 683 {
 684     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 685     vlc_value_t val_list;
 686     vlc_value_t val;
 687     int i_track = -1;
 688     int i_ret = -1;
 689     int i;
 690
 691     if( !p_input_thread )
 692         return -1;
 693
 694     i_ret = var_Get( p_input_thread, "video-es", &val );
 695     if( i_ret < 0 )
 696     {
 697         libvlc_exception_raise( p_e, "Getting Video track information failed" );
 698         vlc_object_release( p_input_thread );
 699         return i_ret;
 700     }
 701
 702     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 703     for( i = 0; i < val_list.p_list->i_count; i++ )
 704     {
 705         if( val_list.p_list->p_values[i].i_int == val.i_int )
 706         {
 707             i_track = i;
 708             break;
 709         }
 710     }
 711     var_Change( p_input_thread, "video-es", VLC_VAR_FREELIST, &val_list, NULL );
 712     vlc_object_release( p_input_thread );
 713     return i_track;
 714 }
 715
 716 void libvlc_video_set_track( libvlc_media_player_t *p_mi, int i_track,
 717                              libvlc_exception_t *p_e )
 718 {
 719     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 720     vlc_value_t val_list;
 721     int i_ret = -1;
 722     int i;
 723
 724     if( !p_input_thread )
 725         return;
 726
 727     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 728     for( i = 0; i < val_list.p_list->i_count; i++ )
 729     {
 730         vlc_value_t val = val_list.p_list->p_values[i];
 731         if( i_track == val.i_int )
 732         {
 733             i_ret = var_Set( p_input_thread, "audio-es", val );
 734             if( i_ret < 0 )
 735                 libvlc_exception_raise( p_e, "Setting video track failed" );
 736             goto end;
 737         }
 738     }
 739     libvlc_exception_raise( p_e, "Video track out of range" );
 740
 741 end:
 742     var_Change( p_input_thread, "video-es", VLC_VAR_FREELIST, &val_list, NULL );
 743     vlc_object_release( p_input_thread );
 744 }
 745
 746 int libvlc_video_destroy( libvlc_media_player_t *p_mi,
 747                           libvlc_exception_t *p_e )
 748 {
 749     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 750     vlc_object_detach( p_vout );
 751     vlc_object_release( p_vout );
 752     vlc_object_release( p_vout );
 753
 754     return 0;
 755 }