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: core.c 14187 2006-02-07 16:37:40Z courmisch $
   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 <vlc/libvlc.h>
  29 #include <vlc_input.h>
  30 #include <vlc_vout.h>
  31
  32 #include "libvlc_internal.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_CHILD );
  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                        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
 148     p_input_thread = (input_thread_t*)vlc_object_get(
 149                                  p_mi->p_libvlc_instance->p_libvlc_int,
 150                                  p_mi->i_input_id );
 151     if( !p_input_thread )
 152     {
 153         libvlc_exception_raise( p_e, "Input does not exist" );
 154         return;
 155     }
 156
 157     var_SetString( p_vout, "snapshot-path", psz_filepath );
 158     var_SetString( p_vout, "snapshot-format", "png" );
 159
 160     vout_Control( p_vout, VOUT_SNAPSHOT );
 161     vlc_object_release( p_vout );
 162     vlc_object_release( p_input_thread );
 163 }
 164
 165 int libvlc_video_get_height( libvlc_media_instance_t *p_mi,
 166                              libvlc_exception_t *p_e )
 167 {
 168     vout_thread_t *p_vout1 = GetVout( p_mi, p_e );
 169     if( !p_vout1 )
 170         return 0;
 171
 172     vlc_object_release( p_vout1 );
 173
 174     return p_vout1->i_window_height;
 175 }
 176
 177 int libvlc_video_get_width( libvlc_media_instance_t *p_mi,
 178                             libvlc_exception_t *p_e )
 179 {
 180     vout_thread_t *p_vout1 = GetVout( p_mi, p_e );
 181     if( !p_vout1 )
 182         return 0;
 183
 184     vlc_object_release( p_vout1 );
 185
 186     return p_vout1->i_window_width;
 187 }
 188
 189 vlc_bool_t libvlc_media_instance_has_vout( libvlc_media_instance_t *p_mi,
 190                                   libvlc_exception_t *p_e )
 191 {
 192     input_thread_t *p_input_thread = libvlc_get_input_thread(p_mi, p_e);
 193     vlc_bool_t has_vout = VLC_FALSE;
 194
 195     if( p_input_thread )
 196     {
 197         vout_thread_t *p_vout;
 198
 199         p_vout = vlc_object_find( p_input_thread, VLC_OBJECT_VOUT, FIND_CHILD );
 200         if( p_vout )
 201         {
 202             has_vout = VLC_TRUE;
 203             vlc_object_release( p_vout );
 204         }
 205         vlc_object_release( p_input_thread );
 206     }
 207     return has_vout;
 208 }
 209
 210 int libvlc_video_reparent( libvlc_media_instance_t *p_mi, libvlc_drawable_t d,
 211                            libvlc_exception_t *p_e )
 212 {
 213     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 214
 215     if( p_vout )
 216     {
 217         vout_Control( p_vout , VOUT_REPARENT, d);
 218         vlc_object_release( p_vout );
 219     }
 220     return 0;
 221 }
 222
 223 void libvlc_video_resize( libvlc_media_instance_t *p_mi, int width, int height, libvlc_exception_t *p_e )
 224 {
 225     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 226     if( p_vout )
 227     {
 228         vout_Control( p_vout, VOUT_SET_SIZE, width, height );
 229         vlc_object_release( p_vout );
 230     }
 231 }
 232
 233 void libvlc_video_redraw_rectangle( libvlc_media_instance_t *p_mi,
 234                            const libvlc_rectangle_t *area,
 235                            libvlc_exception_t *p_e )
 236 {
 237     if( (NULL != area)
 238      && ((area->bottom - area->top) > 0)
 239      && ((area->right - area->left) > 0) )
 240     {
 241         vout_thread_t *p_vout = GetVout( p_mi, p_e );
 242         if( p_vout )
 243         {
 244             /* tell running vout to redraw area */
 245             vout_Control( p_vout , VOUT_REDRAW_RECT,
 246                                area->top, area->left, area->bottom, area->right );
 247             vlc_object_release( p_vout );
 248         }
 249     }
 250 }
 251
 252 /* global video settings */
 253
 254 void libvlc_video_set_parent( libvlc_instance_t *p_instance, libvlc_drawable_t d,
 255                               libvlc_exception_t *p_e )
 256 {
 257     /* set as default for future vout instances */
 258     var_SetInteger(p_instance->p_libvlc_int, "drawable", (int)d);
 259
 260     if( libvlc_playlist_isplaying(p_instance, p_e) )
 261     {
 262         libvlc_media_instance_t *p_mi = libvlc_playlist_get_media_instance(p_instance, p_e);
 263         if( p_mi )
 264         {
 265             vout_thread_t *p_vout = GetVout( p_mi, p_e );
 266             if( p_vout )
 267             {
 268                 /* tell running vout to re-parent */
 269                 vout_Control( p_vout , VOUT_REPARENT, d);
 270                 vlc_object_release( p_vout );
 271             }
 272             libvlc_media_instance_release(p_mi);
 273         }
 274     }
 275 }
 276
 277 libvlc_drawable_t libvlc_video_get_parent( libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
 278 {
 279     libvlc_drawable_t result;
 280
 281     result = var_GetInteger( p_instance->p_libvlc_int, "drawable" );
 282
 283     return result;
 284 }
 285
 286
 287 void libvlc_video_set_size( libvlc_instance_t *p_instance, int width, int height,
 288                            libvlc_exception_t *p_e )
 289 {
 290     /* set as default for future vout instances */
 291     config_PutInt(p_instance->p_libvlc_int, "width", width);
 292     config_PutInt(p_instance->p_libvlc_int, "height", height);
 293
 294     if( libvlc_playlist_isplaying(p_instance, p_e) )
 295     {
 296         libvlc_media_instance_t *p_mi = libvlc_playlist_get_media_instance(p_instance, p_e);
 297         if( p_mi )
 298         {
 299             vout_thread_t *p_vout = GetVout( p_mi, p_e );
 300             if( p_vout )
 301             {
 302                 /* tell running vout to re-size */
 303                 vout_Control( p_vout , VOUT_SET_SIZE, width, height);
 304                 vlc_object_release( p_vout );
 305             }
 306             libvlc_media_instance_release(p_mi);
 307         }
 308     }
 309 }
 310
 311 void libvlc_video_set_viewport( libvlc_instance_t *p_instance,
 312                             const libvlc_rectangle_t *view, const libvlc_rectangle_t *clip,
 313                            libvlc_exception_t *p_e )
 314 {
 315     if( NULL == view )
 316     {
 317         libvlc_exception_raise( p_e, "viewport is NULL" );
 318     }
 319
 320     /* if clip is NULL, then use view rectangle as clip */
 321     if( NULL == clip )
 322         clip = view;
 323
 324     /* set as default for future vout instances */
 325     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-top", view->top );
 326     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-left", view->left );
 327     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-bottom", view->bottom );
 328     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-right", view->right );
 329     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-top", clip->top );
 330     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-left", clip->left );
 331     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-bottom", clip->bottom );
 332     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-right", clip->right );
 333
 334     if( libvlc_playlist_isplaying(p_instance, p_e) )
 335     {
 336         libvlc_media_instance_t *p_mi = libvlc_playlist_get_media_instance(p_instance, p_e);
 337         if( p_mi )
 338         {
 339             vout_thread_t *p_vout = GetVout( p_mi, p_e );
 340             if( p_vout )
 341             {
 342                 /* change viewport for running vout */
 343                 vout_Control( p_vout , VOUT_SET_VIEWPORT,
 344                                    view->top, view->left, view->bottom, view->right,
 345                                    clip->top, clip->left, clip->bottom, clip->right );
 346                 vlc_object_release( p_vout );
 347             }
 348             libvlc_media_instance_release(p_mi);
 349         }
 350     }
 351 }
 352
 353 char *libvlc_video_get_aspect_ratio( libvlc_media_instance_t *p_mi,
 354                                      libvlc_exception_t *p_e )
 355 {
 356     char *psz_aspect = 0;
 357     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 358
 359     if( !p_vout )
 360         return 0;
 361
 362     psz_aspect = var_GetString( p_vout, "aspect-ratio" );
 363     vlc_object_release( p_vout );
 364     return psz_aspect;
 365 }
 366
 367 void libvlc_video_set_aspect_ratio( libvlc_media_instance_t *p_mi,
 368                                     char *psz_aspect, libvlc_exception_t *p_e )
 369 {
 370     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 371     int i_ret = -1;
 372
 373     if( !p_vout )
 374         return;
 375
 376     i_ret = var_SetString( p_vout, "aspect-ratio", psz_aspect );
 377     if( i_ret )
 378         libvlc_exception_raise( p_e,
 379                         "Unexpected error while setting aspect-ratio value" );
 380
 381     vlc_object_release( p_vout );
 382 }
 383
 384 int libvlc_video_get_spu( libvlc_media_instance_t *p_mi,
 385                           libvlc_exception_t *p_e )
 386 {
 387     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 388     vlc_value_t val_list;
 389     vlc_value_t val;
 390     int i_spu = -1;
 391     int i_ret = -1;
 392     int i;
 393
 394     if( !p_input_thread )
 395         return -1;
 396
 397     i_ret = var_Get( p_input_thread, "spu-es", &val );
 398     if( i_ret < 0 )
 399     {
 400         libvlc_exception_raise( p_e, "Getting subtitle information failed" );
 401         vlc_object_release( p_input_thread );
 402         return i_ret;
 403     }
 404
 405     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 406     for( i = 0; i < val_list.p_list->i_count; i++ )
 407     {
 408         vlc_value_t spu_val = val_list.p_list->p_values[i];
 409         if( val.i_int == spu_val.i_int )
 410         {
 411             i_spu = i;
 412             break;
 413         }
 414     }
 415     vlc_object_release( p_input_thread );
 416     return i_spu;
 417 }
 418
 419 void libvlc_video_set_spu( libvlc_media_instance_t *p_mi, int i_spu,
 420                            libvlc_exception_t *p_e )
 421 {
 422     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 423     vlc_value_t val_list;
 424     int i_ret = -1;
 425     int i;
 426
 427     if( !p_input_thread )
 428         return;
 429
 430     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 431     for( i = 0; i < val_list.p_list->i_count; i++ )
 432     {
 433         vlc_value_t val = val_list.p_list->p_values[i];
 434         if( i_spu == i )
 435         {
 436             vlc_value_t new_val;
 437
 438             new_val.i_int = val.i_int;
 439             i_ret = var_Set( p_input_thread, "spu-es", new_val );
 440             if( i_ret < 0 )
 441             {
 442                 libvlc_exception_raise( p_e, "Setting subtitle value failed" );
 443             }
 444             vlc_object_release( p_input_thread );
 445             return;
 446         }
 447     }
 448     libvlc_exception_raise( p_e, "Subtitle value out of range" );
 449     vlc_object_release( p_input_thread );
 450 }
 451
 452 char *libvlc_video_get_crop_geometry( libvlc_media_instance_t *p_mi,
 453                                    libvlc_exception_t *p_e )
 454 {
 455     char *psz_geometry = 0;
 456     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 457
 458     if( !p_vout )
 459         return 0;
 460
 461     psz_geometry = var_GetString( p_vout, "crop" );
 462     vlc_object_release( p_vout );
 463     return psz_geometry;
 464 }
 465
 466 void libvlc_video_set_crop_geometry( libvlc_media_instance_t *p_mi,
 467                                     char *psz_geometry, libvlc_exception_t *p_e )
 468 {
 469     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 470     int i_ret = -1;
 471
 472     if( !p_vout )
 473         return;
 474
 475     i_ret = var_SetString( p_vout, "crop", psz_geometry );
 476     if( i_ret )
 477         libvlc_exception_raise( p_e,
 478                         "Unexpected error while setting crop geometry" );
 479
 480     vlc_object_release( p_vout );
 481 }
 482
 483 int libvlc_video_get_teletext( libvlc_media_instance_t *p_mi,
 484                                libvlc_exception_t *p_e )
 485 {
 486     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 487     int i_ret = -1;
 488
 489     if( !p_vout )
 490         return i_ret;
 491
 492     i_ret = var_GetInteger( p_vout, "vbi-page" );
 493     vlc_object_release( p_vout );
 494     return i_ret;
 495 }
 496
 497 void libvlc_video_set_teletext( libvlc_media_instance_t *p_mi, int i_page,
 498                                 libvlc_exception_t *p_e )
 499 {
 500     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 501     int i_ret = -1;
 502
 503     if( !p_vout )
 504         return;
 505
 506     i_ret = var_SetInteger( p_vout, "vbi-page", i_page );
 507     if( i_ret )
 508         libvlc_exception_raise( p_e,
 509                         "Unexpected error while setting teletext page" );
 510     vlc_object_release( p_vout );
 511 }
 512
 513 int libvlc_video_destroy( libvlc_media_instance_t *p_mi,
 514                           libvlc_exception_t *p_e )
 515 {
 516     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 517     vlc_object_detach( p_vout );
 518     vlc_object_release( p_vout );
 519     vout_Destroy( p_vout );
 520
 521     return 0;
 522 }