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: Cl�ent 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_thread = libvlc_get_input_thread( p_mi, p_exception );
  41     vout_thread_t *p_vout = NULL;
  42
  43     if( p_input_thread )
  44     {
  45         p_vout = vlc_object_find( p_input_thread, VLC_OBJECT_VOUT, FIND_CHILD );
  46         if( !p_vout )
  47         {
  48             libvlc_exception_raise( p_exception, "No active video output" );
  49         }
  50         vlc_object_release( p_input_thread );
  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, char *psz_filepath,
 108         unsigned int i_width, unsigned int i_height, libvlc_exception_t *p_e )
 109 {
 110     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 111     input_thread_t *p_input_thread;
 112
 113     /* GetVout will raise the exception for us */
 114     if( !p_vout ) return;
 115
 116     if( !psz_filepath )
 117     {
 118         libvlc_exception_raise( p_e, "filepath is null" );
 119         return;
 120     }
 121
 122     var_SetInteger( p_vout, "snapshot-width", i_width );
 123     var_SetInteger( p_vout, "snapshot-height", i_height );
 124
 125     p_input_thread = p_mi->p_input_thread;
 126     if( !p_mi->p_input_thread )
 127     {
 128         libvlc_exception_raise( p_e, "Input does not exist" );
 129         return;
 130     }
 131
 132     var_SetString( p_vout, "snapshot-path", psz_filepath );
 133     var_SetString( p_vout, "snapshot-format", "png" );
 134
 135     vout_Control( p_vout, VOUT_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 = vlc_object_find( p_input_thread, VLC_OBJECT_VOUT, FIND_CHILD );
 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     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 194
 195     if( p_vout )
 196     {
 197         vout_Control( p_vout , VOUT_REPARENT, d);
 198         vlc_object_release( p_vout );
 199     }
 200     return 0;
 201 }
 202
 203 void libvlc_video_resize( libvlc_media_player_t *p_mi, int width, int height, libvlc_exception_t *p_e )
 204 {
 205     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 206     if( p_vout )
 207     {
 208         vout_Control( p_vout, VOUT_SET_SIZE, width, height );
 209         vlc_object_release( p_vout );
 210     }
 211 }
 212
 213 void libvlc_video_redraw_rectangle( libvlc_media_player_t *p_mi,
 214                            const libvlc_rectangle_t *area,
 215                            libvlc_exception_t *p_e )
 216 {
 217     if( (NULL != area)
 218      && ((area->bottom - area->top) > 0)
 219      && ((area->right - area->left) > 0) )
 220     {
 221         vout_thread_t *p_vout = GetVout( p_mi, p_e );
 222         if( p_vout )
 223         {
 224             /* tell running vout to redraw area */
 225             vout_Control( p_vout , VOUT_REDRAW_RECT,
 226                                area->top, area->left, area->bottom, area->right );
 227             vlc_object_release( p_vout );
 228         }
 229     }
 230 }
 231
 232 /* global video settings */
 233
 234 /* Deprecated use libvlc_media_player_set_drawable() */
 235 void libvlc_video_set_parent( libvlc_instance_t *p_instance, libvlc_drawable_t d,
 236                               libvlc_exception_t *p_e )
 237 {
 238     /* set as default for future vout instances */
 239     var_SetInteger(p_instance->p_libvlc_int, "drawable", (int)d);
 240
 241     libvlc_media_player_t *p_mi = libvlc_playlist_get_media_player(p_instance, p_e);
 242     if( p_mi )
 243     {
 244         libvlc_media_player_set_drawable( p_mi, d, p_e );
 245         libvlc_media_player_release(p_mi);
 246     }
 247 }
 248
 249 /* Deprecated use libvlc_media_player_get_drawable() */
 250 libvlc_drawable_t libvlc_video_get_parent( libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
 251 {
 252     VLC_UNUSED(p_e);
 253
 254     libvlc_drawable_t result;
 255
 256     result = var_GetInteger( p_instance->p_libvlc_int, "drawable" );
 257
 258     return result;
 259 }
 260
 261
 262 void libvlc_video_set_size( libvlc_instance_t *p_instance, int width, int height,
 263                            libvlc_exception_t *p_e )
 264 {
 265     /* set as default for future vout instances */
 266     config_PutInt(p_instance->p_libvlc_int, "width", width);
 267     config_PutInt(p_instance->p_libvlc_int, "height", height);
 268
 269     libvlc_media_player_t *p_mi = libvlc_playlist_get_media_player(p_instance, p_e);
 270     if( p_mi )
 271     {
 272         vout_thread_t *p_vout = GetVout( p_mi, p_e );
 273         if( p_vout )
 274         {
 275             /* tell running vout to re-size */
 276             vout_Control( p_vout , VOUT_SET_SIZE, width, height);
 277             vlc_object_release( p_vout );
 278         }
 279         libvlc_media_player_release(p_mi);
 280     }
 281 }
 282
 283 void libvlc_video_set_viewport( libvlc_instance_t *p_instance,
 284                             const libvlc_rectangle_t *view, const libvlc_rectangle_t *clip,
 285                            libvlc_exception_t *p_e )
 286 {
 287     if( !view )
 288     {
 289         libvlc_exception_raise( p_e, "viewport is NULL" );
 290         return;
 291     }
 292
 293     /* if clip is NULL, then use view rectangle as clip */
 294     if( !clip )
 295         clip = view;
 296
 297     /* set as default for future vout instances */
 298     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-top", view->top );
 299     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-left", view->left );
 300     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-bottom", view->bottom );
 301     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-right", view->right );
 302     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-top", clip->top );
 303     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-left", clip->left );
 304     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-bottom", clip->bottom );
 305     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-right", clip->right );
 306
 307     libvlc_media_player_t *p_mi = libvlc_playlist_get_media_player(p_instance, p_e);
 308     if( p_mi )
 309     {
 310         vout_thread_t *p_vout = GetVout( p_mi, p_e );
 311         if( p_vout )
 312         {
 313             /* change viewport for running vout */
 314             vout_Control( p_vout , VOUT_SET_VIEWPORT,
 315                                view->top, view->left, view->bottom, view->right,
 316                                clip->top, clip->left, clip->bottom, clip->right );
 317             vlc_object_release( p_vout );
 318         }
 319         libvlc_media_player_release(p_mi);
 320     }
 321 }
 322
 323 char *libvlc_video_get_aspect_ratio( libvlc_media_player_t *p_mi,
 324                                      libvlc_exception_t *p_e )
 325 {
 326     char *psz_aspect = 0;
 327     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 328
 329     if( !p_vout ) return 0;
 330
 331     psz_aspect = var_GetNonEmptyString( p_vout, "aspect-ratio" );
 332     vlc_object_release( p_vout );
 333     return psz_aspect ? psz_aspect : strdup("");
 334 }
 335
 336 void libvlc_video_set_aspect_ratio( libvlc_media_player_t *p_mi,
 337                                     char *psz_aspect, libvlc_exception_t *p_e )
 338 {
 339     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 340     int i_ret = -1;
 341
 342     if( !p_vout ) return;
 343
 344     i_ret = var_SetString( p_vout, "aspect-ratio", psz_aspect );
 345     if( i_ret )
 346         libvlc_exception_raise( p_e,
 347                         "Unexpected error while setting aspect-ratio value" );
 348
 349     vlc_object_release( p_vout );
 350 }
 351
 352 int libvlc_video_get_spu( libvlc_media_player_t *p_mi,
 353                           libvlc_exception_t *p_e )
 354 {
 355     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 356     vlc_value_t val_list;
 357     vlc_value_t val;
 358     int i_spu = -1;
 359     int i_ret = -1;
 360     int i;
 361
 362     if( !p_input_thread ) return -1;
 363
 364     i_ret = var_Get( p_input_thread, "spu-es", &val );
 365     if( i_ret < 0 )
 366     {
 367         libvlc_exception_raise( p_e, "Getting subtitle information failed" );
 368         vlc_object_release( p_input_thread );
 369         return i_ret;
 370     }
 371
 372     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 373     for( i = 0; i < val_list.p_list->i_count; i++ )
 374     {
 375         vlc_value_t spu_val = val_list.p_list->p_values[i];
 376         if( val.i_int == spu_val.i_int )
 377         {
 378             i_spu = i;
 379             break;
 380         }
 381     }
 382     vlc_object_release( p_input_thread );
 383     return i_spu;
 384 }
 385
 386 int libvlc_video_get_spu_count( libvlc_media_player_t *p_mi,
 387                                 libvlc_exception_t *p_e )
 388 {
 389     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 390     vlc_value_t val_list;
 391
 392     if( !p_input_thread )
 393         return -1;
 394
 395     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 396     vlc_object_release( p_input_thread );
 397     return val_list.p_list->i_count;
 398 }
 399
 400 libvlc_track_description_t *
 401         libvlc_video_get_spu_description( libvlc_media_player_t *p_mi,
 402                                           libvlc_exception_t *p_e )
 403 {
 404     return libvlc_get_track_description( p_mi, "spu-es", p_e);
 405 }
 406
 407 void libvlc_video_set_spu( libvlc_media_player_t *p_mi, int i_spu,
 408                            libvlc_exception_t *p_e )
 409 {
 410     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 411     vlc_value_t val_list;
 412     vlc_value_t newval;
 413     int i_ret = -1;
 414
 415     if( !p_input_thread ) return;
 416
 417     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 418     if( (i_spu < 0) && (i_spu > val_list.p_list->i_count) )
 419     {
 420         libvlc_exception_raise( p_e, "Subtitle value out of range" );
 421         vlc_object_release( p_input_thread );
 422         return;
 423     }
 424
 425     newval = val_list.p_list->p_values[i_spu];
 426     i_ret = var_Set( p_input_thread, "spu-es", newval );
 427     if( i_ret < 0 )
 428     {
 429         libvlc_exception_raise( p_e, "Setting subtitle value failed" );
 430     }
 431     vlc_object_release( p_input_thread );
 432 }
 433
 434 int libvlc_video_set_subtitle_file( libvlc_media_player_t *p_mi,
 435                                     char *psz_subtitle,
 436                                     libvlc_exception_t *p_e )
 437 {
 438     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 439     bool b_ret = false;
 440
 441     if( p_input_thread )
 442     {
 443         if( !input_AddSubtitle( p_input_thread, psz_subtitle, true ) )
 444             b_ret = true;
 445         vlc_object_release( p_input_thread );
 446     }
 447     return b_ret;
 448 }
 449
 450 libvlc_track_description_t *
 451         libvlc_video_get_title_description( libvlc_media_player_t *p_mi,
 452                                             libvlc_exception_t * p_e )
 453 {
 454     return libvlc_get_track_description( p_mi, "title", p_e);
 455 }
 456
 457 libvlc_track_description_t *
 458         libvlc_video_get_chapter_description( libvlc_media_player_t *p_mi,
 459                                               int i_title,
 460                                               libvlc_exception_t *p_e )
 461 {
 462     char psz_title[12];
 463     sprintf( psz_title,  "title %2i", i_title );
 464     return libvlc_get_track_description( p_mi, psz_title, p_e);
 465 }
 466
 467 char *libvlc_video_get_crop_geometry( libvlc_media_player_t *p_mi,
 468                                    libvlc_exception_t *p_e )
 469 {
 470     char *psz_geometry = 0;
 471     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 472
 473     if( !p_vout ) return 0;
 474
 475     psz_geometry = var_GetNonEmptyString( p_vout, "crop" );
 476     vlc_object_release( p_vout );
 477     return psz_geometry ? psz_geometry : strdup("");
 478 }
 479
 480 void libvlc_video_set_crop_geometry( libvlc_media_player_t *p_mi,
 481                                     char *psz_geometry, libvlc_exception_t *p_e )
 482 {
 483     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 484     int i_ret = -1;
 485
 486     if( !p_vout ) return;
 487
 488     i_ret = var_SetString( p_vout, "crop", psz_geometry );
 489     if( i_ret )
 490         libvlc_exception_raise( p_e,
 491                         "Unexpected error while setting crop geometry" );
 492
 493     vlc_object_release( p_vout );
 494 }
 495
 496 int libvlc_video_get_teletext( libvlc_media_player_t *p_mi,
 497                                libvlc_exception_t *p_e )
 498 {
 499     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 500     vlc_object_t *p_vbi;
 501     int i_ret = -1;
 502
 503     if( !p_vout ) return i_ret;
 504
 505     p_vbi = (vlc_object_t *) vlc_object_find_name( p_vout, "zvbi",
 506                                                    FIND_ANYWHERE );
 507     if( p_vbi )
 508     {
 509         i_ret = var_GetInteger( p_vbi, "vbi-page" );
 510         vlc_object_release( p_vbi );
 511     }
 512
 513     vlc_object_release( p_vout );
 514     return i_ret;
 515 }
 516
 517 void libvlc_video_set_teletext( libvlc_media_player_t *p_mi, int i_page,
 518                                 libvlc_exception_t *p_e )
 519 {
 520     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 521     vlc_object_t *p_vbi;
 522     int i_ret = -1;
 523
 524     if( !p_vout ) return;
 525
 526     p_vbi = (vlc_object_t *) vlc_object_find_name( p_vout, "zvbi",
 527                                                    FIND_ANYWHERE );
 528     if( p_vbi )
 529     {
 530         i_ret = var_SetInteger( p_vbi, "vbi-page", i_page );
 531         vlc_object_release( p_vbi );
 532         if( i_ret )
 533             libvlc_exception_raise( p_e,
 534                             "Unexpected error while setting teletext page" );
 535     }
 536     vlc_object_release( p_vout );
 537 }
 538
 539 void libvlc_toggle_teletext( libvlc_media_player_t *p_mi,
 540                              libvlc_exception_t *p_e )
 541 {
 542     input_thread_t *p_input_thread;
 543     vlc_object_t *p_vbi;
 544     int i_ret;
 545
 546     p_input_thread = libvlc_get_input_thread(p_mi, p_e);
 547     if( !p_input_thread ) return;
 548
 549     p_vbi = (vlc_object_t *) vlc_object_find_name( p_input_thread, "zvbi",
 550                                                    FIND_ANYWHERE );
 551     if( p_vbi )
 552     {
 553         const int i_teletext_es = var_GetInteger( p_input_thread, "teletext-es" );
 554         const int i_spu_es = var_GetInteger( p_input_thread, "spu-es" );
 555
 556         if( (i_teletext_es >= 0) && (i_teletext_es == i_spu_es) )
 557         {
 558             int i_page = 100;
 559
 560             i_page = var_GetInteger( p_vbi, "vbi-page" );
 561             i_page = (i_teletext_es >= 0) ? i_page : 0;
 562
 563             i_ret = var_SetInteger( p_vbi, "vbi-page", i_page );
 564             if( i_ret )
 565                 libvlc_exception_raise( p_e,
 566                                 "Unexpected error while setting teletext page" );
 567         }
 568         else if( i_teletext_es >= 0 )
 569         {
 570             bool opaque = true;
 571
 572             opaque = var_GetBool( p_vbi, "vbi-opaque" );
 573             i_ret = var_SetBool( p_vbi, "vbi-opaque", !opaque );
 574             if( i_ret )
 575                 libvlc_exception_raise( p_e,
 576                                 "Unexpected error while setting teletext transparency" );
 577         }
 578         vlc_object_release( p_vbi );
 579     }
 580     else
 581     {
 582         /* Teletext is not enabled yet, so enable it.
 583          * Only after it is enable it is possible to view teletext pages
 584          */
 585         const int i_teletext_es = var_GetInteger( p_input_thread, "teletext-es" );
 586
 587         if( i_teletext_es >= 0 )
 588         {
 589             const int i_spu_es = var_GetInteger( p_input_thread, "spu-es" );
 590
 591             if( i_teletext_es == i_spu_es )
 592                 var_SetInteger( p_input_thread, "spu-es", -1 );
 593             else
 594                 var_SetInteger( p_input_thread, "spu-es", i_teletext_es );
 595         }
 596     }
 597     vlc_object_release( p_input_thread );
 598 }
 599
 600 int libvlc_video_get_track_count( libvlc_media_player_t *p_mi,
 601                                   libvlc_exception_t *p_e )
 602 {
 603     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 604     vlc_value_t val_list;
 605
 606     if( !p_input_thread )
 607         return -1;
 608
 609     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 610     vlc_object_release( p_input_thread );
 611     return val_list.p_list->i_count;
 612 }
 613
 614 libvlc_track_description_t *
 615         libvlc_video_get_track_description( libvlc_media_player_t *p_mi,
 616                                             libvlc_exception_t *p_e )
 617 {
 618     return libvlc_get_track_description( p_mi, "video-es", p_e);
 619 }
 620
 621 int libvlc_video_get_track( libvlc_media_player_t *p_mi,
 622                             libvlc_exception_t *p_e )
 623 {
 624     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 625     vlc_value_t val_list;
 626     vlc_value_t val;
 627     int i_track = -1;
 628     int i_ret = -1;
 629     int i;
 630
 631     if( !p_input_thread )
 632         return -1;
 633
 634     i_ret = var_Get( p_input_thread, "video-es", &val );
 635     if( i_ret < 0 )
 636     {
 637         libvlc_exception_raise( p_e, "Getting Video track information failed" );
 638         vlc_object_release( p_input_thread );
 639         return i_ret;
 640     }
 641
 642     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 643     for( i = 0; i < val_list.p_list->i_count; i++ )
 644     {
 645         vlc_value_t track_val = val_list.p_list->p_values[i];
 646         if( track_val.i_int == val.i_int )
 647         {
 648             i_track = i;
 649             break;
 650        }
 651     }
 652     vlc_object_release( p_input_thread );
 653     return i_track;
 654 }
 655
 656 void libvlc_video_set_track( libvlc_media_player_t *p_mi, int i_track,
 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_ret = -1;
 662     int i;
 663
 664     if( !p_input_thread )
 665         return;
 666
 667     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 668     for( i = 0; i < val_list.p_list->i_count; i++ )
 669     {
 670         vlc_value_t val = val_list.p_list->p_values[i];
 671         if( i_track == val.i_int )
 672         {
 673             i_ret = var_Set( p_input_thread, "audio-es", val );
 674             if( i_ret < 0 )
 675                 libvlc_exception_raise( p_e, "Setting video track failed" );
 676             vlc_object_release( p_input_thread );
 677             return;
 678         }
 679     }
 680     libvlc_exception_raise( p_e, "Video track out of range" );
 681     vlc_object_release( p_input_thread );
 682 }
 683
 684 int libvlc_video_destroy( libvlc_media_player_t *p_mi,
 685                           libvlc_exception_t *p_e )
 686 {
 687     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 688     vlc_object_detach( p_vout );
 689     vlc_object_release( p_vout );
 690     vlc_object_release( p_vout );
 691
 692     return 0;
 693 }