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 since it is locked at
  36  * the end of this function.
  37  */
  38 static vout_thread_t *GetVout( libvlc_media_instance_t *p_mi,
  39                                libvlc_exception_t *p_exception )
  40 {
  41     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_exception );
  42     vout_thread_t *p_vout = NULL;
  43
  44     if( p_input_thread )
  45     {
  46         p_vout = vlc_object_find( p_input_thread, VLC_OBJECT_VOUT, FIND_ANYWHERE );
  47         if( !p_vout )
  48         {
  49             libvlc_exception_raise( p_exception, "No active video output" );
  50         }
  51         vlc_object_release( p_input_thread );
  52     }
  53     return p_vout;
  54 }
  55
  56 /**********************************************************************
  57  * Exported functions
  58  **********************************************************************/
  59
  60 void libvlc_set_fullscreen( libvlc_media_instance_t *p_mi, int b_fullscreen,
  61                             libvlc_exception_t *p_e )
  62 {
  63     /* We only work on the first vout */
  64     vout_thread_t *p_vout1 = GetVout( p_mi, p_e );
  65     vlc_value_t val; int i_ret;
  66
  67     /* GetVout will raise the exception for us */
  68     if( !p_vout1 )
  69     {
  70         return;
  71     }
  72
  73     if( b_fullscreen ) val.b_bool = VLC_TRUE;
  74     else               val.b_bool = VLC_FALSE;
  75
  76     i_ret = var_Set( p_vout1, "fullscreen", val );
  77     if( i_ret )
  78         libvlc_exception_raise( p_e,
  79                         "Unexpected error while setting fullscreen value" );
  80
  81     vlc_object_release( p_vout1 );
  82 }
  83
  84 int libvlc_get_fullscreen( libvlc_media_instance_t *p_mi,
  85                             libvlc_exception_t *p_e )
  86 {
  87     /* We only work on the first vout */
  88     vout_thread_t *p_vout1 = GetVout( p_mi, p_e );
  89     vlc_value_t val; int i_ret;
  90
  91     /* GetVout will raise the exception for us */
  92     if( !p_vout1 )
  93         return 0;
  94
  95     i_ret = var_Get( p_vout1, "fullscreen", &val );
  96     if( i_ret )
  97         libvlc_exception_raise( p_e,
  98                         "Unexpected error while looking up fullscreen value" );
  99
 100     return val.b_bool == VLC_TRUE ? 1 : 0;
 101 }
 102
 103 void libvlc_toggle_fullscreen( libvlc_media_instance_t *p_mi,
 104                                libvlc_exception_t *p_e )
 105 {
 106     /* We only work on the first vout */
 107     vout_thread_t *p_vout1 = GetVout( p_mi, p_e );
 108     vlc_value_t val; int i_ret;
 109
 110     /* GetVout will raise the exception for us */
 111     if( !p_vout1 )
 112         return;
 113
 114     i_ret = var_Get( p_vout1, "fullscreen", &val );
 115     if( i_ret )
 116         libvlc_exception_raise( p_e,
 117                         "Unexpected error while looking up fullscreen value" );
 118
 119     val.b_bool = !val.b_bool;
 120     i_ret = var_Set( p_vout1, "fullscreen", val );
 121     if( i_ret )
 122         libvlc_exception_raise( p_e,
 123                         "Unexpected error while setting fullscreen value" );
 124
 125     vlc_object_release( p_vout1 );
 126 }
 127
 128 void
 129 libvlc_video_take_snapshot( libvlc_media_instance_t *p_mi, char *psz_filepath,
 130         unsigned int i_width, unsigned int i_height, libvlc_exception_t *p_e )
 131 {
 132     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 133     input_thread_t *p_input_thread;
 134
 135     /* GetVout will raise the exception for us */
 136     if( !p_vout )
 137     {
 138         return;
 139     }
 140
 141     if( !psz_filepath )
 142     {
 143         libvlc_exception_raise( p_e, "filepath is null" );
 144         return;
 145     }
 146
 147     var_SetInteger( p_vout, "snapshot-width", i_width );
 148     var_SetInteger( p_vout, "snapshot-height", i_height );
 149
 150     p_input_thread = (input_thread_t*)vlc_object_get(
 151                                  p_mi->p_libvlc_instance->p_libvlc_int,
 152                                  p_mi->i_input_id );
 153     if( !p_input_thread )
 154     {
 155         libvlc_exception_raise( p_e, "Input does not exist" );
 156         return;
 157     }
 158
 159     var_SetString( p_vout, "snapshot-path", psz_filepath );
 160     var_SetString( p_vout, "snapshot-format", "png" );
 161
 162     vout_Control( p_vout, VOUT_SNAPSHOT );
 163     vlc_object_release( p_vout );
 164     vlc_object_release( p_input_thread );
 165 }
 166
 167 int libvlc_video_get_height( libvlc_media_instance_t *p_mi,
 168                              libvlc_exception_t *p_e )
 169 {
 170     vout_thread_t *p_vout1 = GetVout( p_mi, p_e );
 171     if( !p_vout1 )
 172         return 0;
 173
 174     vlc_object_release( p_vout1 );
 175
 176     return p_vout1->i_window_height;
 177 }
 178
 179 int libvlc_video_get_width( libvlc_media_instance_t *p_mi,
 180                             libvlc_exception_t *p_e )
 181 {
 182     vout_thread_t *p_vout1 = GetVout( p_mi, p_e );
 183     if( !p_vout1 )
 184         return 0;
 185
 186     vlc_object_release( p_vout1 );
 187
 188     return p_vout1->i_window_width;
 189 }
 190
 191 vlc_bool_t libvlc_media_instance_has_vout( libvlc_media_instance_t *p_mi,
 192                                   libvlc_exception_t *p_e )
 193 {
 194     input_thread_t *p_input_thread = libvlc_get_input_thread(p_mi, p_e);
 195     vlc_bool_t has_vout = VLC_FALSE;
 196
 197     if( p_input_thread )
 198     {
 199         vout_thread_t *p_vout;
 200
 201         p_vout = vlc_object_find( p_input_thread, VLC_OBJECT_VOUT, FIND_CHILD );
 202         if( p_vout )
 203         {
 204             has_vout = VLC_TRUE;
 205             vlc_object_release( p_vout );
 206         }
 207         vlc_object_release( p_input_thread );
 208     }
 209     return has_vout;
 210 }
 211
 212 int libvlc_video_reparent( libvlc_media_instance_t *p_mi, libvlc_drawable_t d,
 213                            libvlc_exception_t *p_e )
 214 {
 215     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 216
 217     if( p_vout )
 218     {
 219         vout_Control( p_vout , VOUT_REPARENT, d);
 220         vlc_object_release( p_vout );
 221     }
 222     return 0;
 223 }
 224
 225 void libvlc_video_resize( libvlc_media_instance_t *p_mi, int width, int height, libvlc_exception_t *p_e )
 226 {
 227     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 228     if( p_vout )
 229     {
 230         vout_Control( p_vout, VOUT_SET_SIZE, width, height );
 231         vlc_object_release( p_vout );
 232     }
 233 }
 234
 235 void libvlc_video_redraw_rectangle( libvlc_media_instance_t *p_mi,
 236                            const libvlc_rectangle_t *area,
 237                            libvlc_exception_t *p_e )
 238 {
 239     if( (NULL != area)
 240      && ((area->bottom - area->top) > 0)
 241      && ((area->right - area->left) > 0) )
 242     {
 243         vout_thread_t *p_vout = GetVout( p_mi, p_e );
 244         if( p_vout )
 245         {
 246             /* tell running vout to redraw area */
 247             vout_Control( p_vout , VOUT_REDRAW_RECT,
 248                                area->top, area->left, area->bottom, area->right );
 249             vlc_object_release( p_vout );
 250         }
 251     }
 252 }
 253
 254 /* global video settings */
 255
 256 void libvlc_video_set_parent( libvlc_instance_t *p_instance, libvlc_drawable_t d,
 257                               libvlc_exception_t *p_e )
 258 {
 259     /* set as default for future vout instances */
 260     var_SetInteger(p_instance->p_libvlc_int, "drawable", (int)d);
 261
 262     if( libvlc_playlist_isplaying(p_instance, p_e) )
 263     {
 264         libvlc_media_instance_t *p_mi = libvlc_playlist_get_media_instance(p_instance, p_e);
 265         if( p_mi )
 266         {
 267             vout_thread_t *p_vout = GetVout( p_mi, p_e );
 268             if( p_vout )
 269             {
 270                 /* tell running vout to re-parent */
 271                 vout_Control( p_vout , VOUT_REPARENT, d);
 272                 vlc_object_release( p_vout );
 273             }
 274             libvlc_media_instance_release(p_mi);
 275         }
 276     }
 277 }
 278
 279 libvlc_drawable_t libvlc_video_get_parent( libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
 280 {
 281     libvlc_drawable_t result;
 282
 283     result = var_GetInteger( p_instance->p_libvlc_int, "drawable" );
 284
 285     return result;
 286 }
 287
 288
 289 void libvlc_video_set_size( libvlc_instance_t *p_instance, int width, int height,
 290                            libvlc_exception_t *p_e )
 291 {
 292     /* set as default for future vout instances */
 293     config_PutInt(p_instance->p_libvlc_int, "width", width);
 294     config_PutInt(p_instance->p_libvlc_int, "height", height);
 295
 296     if( libvlc_playlist_isplaying(p_instance, p_e) )
 297     {
 298         libvlc_media_instance_t *p_mi = libvlc_playlist_get_media_instance(p_instance, p_e);
 299         if( p_mi )
 300         {
 301             vout_thread_t *p_vout = GetVout( p_mi, p_e );
 302             if( p_vout )
 303             {
 304                 /* tell running vout to re-size */
 305                 vout_Control( p_vout , VOUT_SET_SIZE, width, height);
 306                 vlc_object_release( p_vout );
 307             }
 308             libvlc_media_instance_release(p_mi);
 309         }
 310     }
 311 }
 312
 313 void libvlc_video_set_viewport( libvlc_instance_t *p_instance,
 314                             const libvlc_rectangle_t *view, const libvlc_rectangle_t *clip,
 315                            libvlc_exception_t *p_e )
 316 {
 317     if( NULL == view )
 318     {
 319         libvlc_exception_raise( p_e, "viewport is NULL" );
 320     }
 321
 322     /* if clip is NULL, then use view rectangle as clip */
 323     if( NULL == clip )
 324         clip = view;
 325
 326     /* set as default for future vout instances */
 327     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-top", view->top );
 328     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-left", view->left );
 329     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-bottom", view->bottom );
 330     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-right", view->right );
 331     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-top", clip->top );
 332     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-left", clip->left );
 333     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-bottom", clip->bottom );
 334     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-right", clip->right );
 335
 336     if( libvlc_playlist_isplaying(p_instance, p_e) )
 337     {
 338         libvlc_media_instance_t *p_mi = libvlc_playlist_get_media_instance(p_instance, p_e);
 339         if( p_mi )
 340         {
 341             vout_thread_t *p_vout = GetVout( p_mi, p_e );
 342             if( p_vout )
 343             {
 344                 /* change viewport for running vout */
 345                 vout_Control( p_vout , VOUT_SET_VIEWPORT,
 346                                    view->top, view->left, view->bottom, view->right,
 347                                    clip->top, clip->left, clip->bottom, clip->right );
 348                 vlc_object_release( p_vout );
 349             }
 350             libvlc_media_instance_release(p_mi);
 351         }
 352     }
 353 }
 354
 355 char *libvlc_video_get_aspect_ratio( libvlc_media_instance_t *p_mi,
 356                                      libvlc_exception_t *p_e )
 357 {
 358     char *psz_aspect = 0;
 359     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 360
 361     if( !p_vout )
 362         return 0;
 363
 364     psz_aspect = var_GetNonEmptyString( p_vout, "aspect-ratio" );
 365     vlc_object_release( p_vout );
 366     return psz_aspect ? psz_aspect : strdup("");
 367 }
 368
 369 void libvlc_video_set_aspect_ratio( libvlc_media_instance_t *p_mi,
 370                                     char *psz_aspect, libvlc_exception_t *p_e )
 371 {
 372     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 373     int i_ret = -1;
 374
 375     if( !p_vout )
 376         return;
 377
 378     i_ret = var_SetString( p_vout, "aspect-ratio", psz_aspect );
 379     if( i_ret )
 380         libvlc_exception_raise( p_e,
 381                         "Unexpected error while setting aspect-ratio value" );
 382
 383     vlc_object_release( p_vout );
 384 }
 385
 386 int libvlc_video_get_spu( libvlc_media_instance_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     vlc_value_t val;
 392     int i_spu = -1;
 393     int i_ret = -1;
 394     int i;
 395
 396     if( !p_input_thread )
 397         return -1;
 398
 399     i_ret = var_Get( p_input_thread, "spu-es", &val );
 400     if( i_ret < 0 )
 401     {
 402         libvlc_exception_raise( p_e, "Getting subtitle information failed" );
 403         vlc_object_release( p_input_thread );
 404         return i_ret;
 405     }
 406
 407     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 408     for( i = 0; i < val_list.p_list->i_count; i++ )
 409     {
 410         vlc_value_t spu_val = val_list.p_list->p_values[i];
 411         if( val.i_int == spu_val.i_int )
 412         {
 413             i_spu = i;
 414             break;
 415         }
 416     }
 417     vlc_object_release( p_input_thread );
 418     return i_spu;
 419 }
 420
 421 void libvlc_video_set_spu( libvlc_media_instance_t *p_mi, int i_spu,
 422                            libvlc_exception_t *p_e )
 423 {
 424     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 425     vlc_value_t val_list;
 426     int i_ret = -1;
 427     int i;
 428
 429     if( !p_input_thread )
 430         return;
 431
 432     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 433     for( i = 0; i < val_list.p_list->i_count; i++ )
 434     {
 435         vlc_value_t val = val_list.p_list->p_values[i];
 436         if( i_spu == i )
 437         {
 438             vlc_value_t new_val;
 439
 440             new_val.i_int = val.i_int;
 441             i_ret = var_Set( p_input_thread, "spu-es", new_val );
 442             if( i_ret < 0 )
 443             {
 444                 libvlc_exception_raise( p_e, "Setting subtitle value failed" );
 445             }
 446             vlc_object_release( p_input_thread );
 447             return;
 448         }
 449     }
 450     libvlc_exception_raise( p_e, "Subtitle value out of range" );
 451     vlc_object_release( p_input_thread );
 452 }
 453
 454 char *libvlc_video_get_crop_geometry( libvlc_media_instance_t *p_mi,
 455                                    libvlc_exception_t *p_e )
 456 {
 457     char *psz_geometry = 0;
 458     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 459
 460     if( !p_vout )
 461         return 0;
 462
 463     psz_geometry = var_GetNonEmptyString( p_vout, "crop" );
 464     vlc_object_release( p_vout );
 465     return psz_geometry ? psz_geometry : strdup("");
 466 }
 467
 468 void libvlc_video_set_crop_geometry( libvlc_media_instance_t *p_mi,
 469                                     char *psz_geometry, libvlc_exception_t *p_e )
 470 {
 471     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 472     int i_ret = -1;
 473
 474     if( !p_vout )
 475         return;
 476
 477     i_ret = var_SetString( p_vout, "crop", psz_geometry );
 478     if( i_ret )
 479         libvlc_exception_raise( p_e,
 480                         "Unexpected error while setting crop geometry" );
 481
 482     vlc_object_release( p_vout );
 483 }
 484
 485 int libvlc_video_get_teletext( libvlc_media_instance_t *p_mi,
 486                                libvlc_exception_t *p_e )
 487 {
 488     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 489     vlc_object_t *p_vbi;
 490     int i_ret = -1;
 491
 492     if( !p_vout )
 493         return i_ret;
 494
 495     p_vbi = (vlc_object_t *) vlc_object_find_name( p_vout, "zvbi",
 496                                                    FIND_ANYWHERE );
 497     if( p_vbi )
 498     {
 499         i_ret = var_GetInteger( p_vbi, "vbi-page" );
 500         vlc_object_release( p_vbi );
 501     }
 502
 503     vlc_object_release( p_vout );
 504     return i_ret;
 505 }
 506
 507 void libvlc_video_set_teletext( libvlc_media_instance_t *p_mi, int i_page,
 508                                 libvlc_exception_t *p_e )
 509 {
 510     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 511     vlc_object_t *p_vbi;
 512     int i_ret = -1;
 513
 514     if( !p_vout )
 515         return;
 516
 517     p_vbi = (vlc_object_t *) vlc_object_find_name( p_vout, "zvbi",
 518                                                    FIND_ANYWHERE );
 519     if( p_vbi )
 520     {
 521         i_ret = var_SetInteger( p_vbi, "vbi-page", i_page );
 522         vlc_object_release( p_vbi );
 523     }
 524     if( i_ret )
 525         libvlc_exception_raise( p_e,
 526                         "Unexpected error while setting teletext page" );
 527     vlc_object_release( p_vout );
 528 }
 529
 530 void libvlc_toggle_teletext( libvlc_media_instance_t *p_mi,
 531                              libvlc_exception_t *p_e )
 532 {
 533     /* We only work on the first vout */
 534     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 535     vlc_value_t val; int i_ret;
 536
 537     /* GetVout will raise the exception for us */
 538     if( !p_vout )
 539         return;
 540
 541     i_ret = var_Get( p_vout, "vbi-opaque", &val );
 542     if( i_ret )
 543         libvlc_exception_raise( p_e,
 544                         "Unexpected error while looking up teletext value" );
 545
 546     val.b_bool = !val.b_bool;
 547     i_ret = var_Set( p_vout, "vbi-opaque", val );
 548     if( i_ret )
 549         libvlc_exception_raise( p_e,
 550                         "Unexpected error while setting teletext value" );
 551
 552     vlc_object_release( p_vout );
 553 }
 554
 555 int libvlc_video_destroy( libvlc_media_instance_t *p_mi,
 556                           libvlc_exception_t *p_e )
 557 {
 558     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 559     vlc_object_detach( p_vout );
 560     vlc_object_release( p_vout );
 561     vout_Destroy( p_vout );
 562
 563     return 0;
 564 }