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 "libvlc_internal.h"
  29 #include <vlc/libvlc.h>
  30 #include <vlc_input.h>
  31 #include <vlc_vout.h>
  32
  33 /*
  34  * Remember to release the returned vout_thread_t since it is locked at
  35  * the end of this function.
  36  */
  37 static vout_thread_t *GetVout( libvlc_media_instance_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_instance_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_vout1 = GetVout( p_mi, p_e );
  64     vlc_value_t val; int i_ret;
  65
  66     /* GetVout will raise the exception for us */
  67     if( !p_vout1 )
  68     {
  69         return;
  70     }
  71
  72     if( b_fullscreen ) val.b_bool = VLC_TRUE;
  73     else               val.b_bool = VLC_FALSE;
  74
  75     i_ret = var_Set( p_vout1, "fullscreen", val );
  76     if( i_ret )
  77         libvlc_exception_raise( p_e,
  78                         "Unexpected error while setting fullscreen value" );
  79
  80     vlc_object_release( p_vout1 );
  81 }
  82
  83 int libvlc_get_fullscreen( libvlc_media_instance_t *p_mi,
  84                             libvlc_exception_t *p_e )
  85 {
  86     /* We only work on the first vout */
  87     vout_thread_t *p_vout1 = GetVout( p_mi, p_e );
  88     vlc_value_t val; int i_ret;
  89
  90     /* GetVout will raise the exception for us */
  91     if( !p_vout1 )
  92         return 0;
  93
  94     i_ret = var_Get( p_vout1, "fullscreen", &val );
  95     if( i_ret )
  96         libvlc_exception_raise( p_e,
  97                         "Unexpected error while looking up fullscreen value" );
  98
  99     return val.b_bool == VLC_TRUE ? 1 : 0;
 100 }
 101
 102 void libvlc_toggle_fullscreen( libvlc_media_instance_t *p_mi,
 103                                libvlc_exception_t *p_e )
 104 {
 105     /* We only work on the first vout */
 106     vout_thread_t *p_vout1 = GetVout( p_mi, p_e );
 107     vlc_value_t val; int i_ret;
 108
 109     /* GetVout will raise the exception for us */
 110     if( !p_vout1 )
 111         return;
 112
 113     i_ret = var_Get( p_vout1, "fullscreen", &val );
 114     if( i_ret )
 115         libvlc_exception_raise( p_e,
 116                         "Unexpected error while looking up fullscreen value" );
 117
 118     val.b_bool = !val.b_bool;
 119     i_ret = var_Set( p_vout1, "fullscreen", val );
 120     if( i_ret )
 121         libvlc_exception_raise( p_e,
 122                         "Unexpected error while setting fullscreen value" );
 123
 124     vlc_object_release( p_vout1 );
 125 }
 126
 127 void
 128 libvlc_video_take_snapshot( libvlc_media_instance_t *p_mi, char *psz_filepath,
 129                        libvlc_exception_t *p_e )
 130 {
 131     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 132     input_thread_t *p_input_thread;
 133
 134     /* GetVout will raise the exception for us */
 135     if( !p_vout )
 136     {
 137         return;
 138     }
 139
 140     if( !psz_filepath )
 141     {
 142         libvlc_exception_raise( p_e, "filepath is null" );
 143         return;
 144     }
 145
 146
 147     p_input_thread = (input_thread_t*)vlc_object_get(
 148                                  p_mi->p_libvlc_instance->p_libvlc_int,
 149                                  p_mi->i_input_id );
 150     if( !p_input_thread )
 151     {
 152         libvlc_exception_raise( p_e, "Input does not exist" );
 153         return;
 154     }
 155
 156     var_SetString( p_vout, "snapshot-path", psz_filepath );
 157     var_SetString( p_vout, "snapshot-format", "png" );
 158
 159     vout_Control( p_vout, VOUT_SNAPSHOT );
 160     vlc_object_release( p_vout );
 161     vlc_object_release( p_input_thread );
 162 }
 163
 164 int libvlc_video_get_height( libvlc_media_instance_t *p_mi,
 165                              libvlc_exception_t *p_e )
 166 {
 167     vout_thread_t *p_vout1 = GetVout( p_mi, p_e );
 168     if( !p_vout1 )
 169         return 0;
 170
 171     vlc_object_release( p_vout1 );
 172
 173     return p_vout1->i_window_height;
 174 }
 175
 176 int libvlc_video_get_width( libvlc_media_instance_t *p_mi,
 177                             libvlc_exception_t *p_e )
 178 {
 179     vout_thread_t *p_vout1 = GetVout( p_mi, p_e );
 180     if( !p_vout1 )
 181         return 0;
 182
 183     vlc_object_release( p_vout1 );
 184
 185     return p_vout1->i_window_width;
 186 }
 187
 188 vlc_bool_t libvlc_media_instance_has_vout( libvlc_media_instance_t *p_mi,
 189                                   libvlc_exception_t *p_e )
 190 {
 191     input_thread_t *p_input_thread = libvlc_get_input_thread(p_mi, p_e);
 192     vlc_bool_t has_vout = VLC_FALSE;
 193
 194     if( p_input_thread )
 195     {
 196         vout_thread_t *p_vout;
 197
 198         p_vout = vlc_object_find( p_input_thread, VLC_OBJECT_VOUT, FIND_CHILD );
 199         if( p_vout )
 200         {
 201             has_vout = VLC_TRUE;
 202             vlc_object_release( p_vout );
 203         }
 204         vlc_object_release( p_input_thread );
 205     }
 206     return has_vout;
 207 }
 208
 209 int libvlc_video_reparent( libvlc_media_instance_t *p_mi, libvlc_drawable_t d,
 210                            libvlc_exception_t *p_e )
 211 {
 212     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 213
 214     if( p_vout )
 215     {
 216         vout_Control( p_vout , VOUT_REPARENT, d);
 217         vlc_object_release( p_vout );
 218     }
 219     return 0;
 220 }
 221
 222 void libvlc_video_resize( libvlc_media_instance_t *p_mi, int width, int height, libvlc_exception_t *p_e )
 223 {
 224     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 225     if( p_vout )
 226     {
 227         vout_Control( p_vout, VOUT_SET_SIZE, width, height );
 228         vlc_object_release( p_vout );
 229     }
 230 }
 231
 232 void libvlc_video_redraw_rectangle( libvlc_media_instance_t *p_mi,
 233                            const libvlc_rectangle_t *area,
 234                            libvlc_exception_t *p_e )
 235 {
 236     if( (NULL != area)
 237      && ((area->bottom - area->top) > 0)
 238      && ((area->right - area->left) > 0) )
 239     {
 240         vout_thread_t *p_vout = GetVout( p_mi, p_e );
 241         if( p_vout )
 242         {
 243             /* tell running vout to redraw area */
 244             vout_Control( p_vout , VOUT_REDRAW_RECT,
 245                                area->top, area->left, area->bottom, area->right );
 246             vlc_object_release( p_vout );
 247         }
 248     }
 249 }
 250
 251 /* global video settings */
 252
 253 void libvlc_video_set_parent( libvlc_instance_t *p_instance, libvlc_drawable_t d,
 254                               libvlc_exception_t *p_e )
 255 {
 256     /* set as default for future vout instances */
 257     var_SetInteger(p_instance->p_libvlc_int, "drawable", (int)d);
 258
 259     if( libvlc_playlist_isplaying(p_instance, p_e) )
 260     {
 261         libvlc_media_instance_t *p_mi = libvlc_playlist_get_media_instance(p_instance, p_e);
 262         if( p_mi )
 263         {
 264             vout_thread_t *p_vout = GetVout( p_mi, p_e );
 265             if( p_vout )
 266             {
 267                 /* tell running vout to re-parent */
 268                 vout_Control( p_vout , VOUT_REPARENT, d);
 269                 vlc_object_release( p_vout );
 270             }
 271             libvlc_media_instance_release(p_mi);
 272         }
 273     }
 274 }
 275
 276 libvlc_drawable_t libvlc_video_get_parent( libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
 277 {
 278     libvlc_drawable_t result;
 279
 280     result = var_GetInteger( p_instance->p_libvlc_int, "drawable" );
 281
 282     return result;
 283 }
 284
 285
 286 void libvlc_video_set_size( libvlc_instance_t *p_instance, int width, int height,
 287                            libvlc_exception_t *p_e )
 288 {
 289     /* set as default for future vout instances */
 290     config_PutInt(p_instance->p_libvlc_int, "width", width);
 291     config_PutInt(p_instance->p_libvlc_int, "height", height);
 292
 293     if( libvlc_playlist_isplaying(p_instance, p_e) )
 294     {
 295         libvlc_media_instance_t *p_mi = libvlc_playlist_get_media_instance(p_instance, p_e);
 296         if( p_mi )
 297         {
 298             vout_thread_t *p_vout = GetVout( p_mi, p_e );
 299             if( p_vout )
 300             {
 301                 /* tell running vout to re-size */
 302                 vout_Control( p_vout , VOUT_SET_SIZE, width, height);
 303                 vlc_object_release( p_vout );
 304             }
 305             libvlc_media_instance_release(p_mi);
 306         }
 307     }
 308 }
 309
 310 void libvlc_video_set_viewport( libvlc_instance_t *p_instance,
 311                             const libvlc_rectangle_t *view, const libvlc_rectangle_t *clip,
 312                            libvlc_exception_t *p_e )
 313 {
 314     if( NULL == view )
 315     {
 316         libvlc_exception_raise( p_e, "viewport is NULL" );
 317     }
 318
 319     /* if clip is NULL, then use view rectangle as clip */
 320     if( NULL == clip )
 321         clip = view;
 322
 323     /* set as default for future vout instances */
 324     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-top", view->top );
 325     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-left", view->left );
 326     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-bottom", view->bottom );
 327     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-right", view->right );
 328     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-top", clip->top );
 329     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-left", clip->left );
 330     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-bottom", clip->bottom );
 331     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-right", clip->right );
 332
 333     if( libvlc_playlist_isplaying(p_instance, p_e) )
 334     {
 335         libvlc_media_instance_t *p_mi = libvlc_playlist_get_media_instance(p_instance, p_e);
 336         if( p_mi )
 337         {
 338             vout_thread_t *p_vout = GetVout( p_mi, p_e );
 339             if( p_vout )
 340             {
 341                 /* change viewport for running vout */
 342                 vout_Control( p_vout , VOUT_SET_VIEWPORT,
 343                                    view->top, view->left, view->bottom, view->right,
 344                                    clip->top, clip->left, clip->bottom, clip->right );
 345                 vlc_object_release( p_vout );
 346             }
 347             libvlc_media_instance_release(p_mi);
 348         }
 349     }
 350 }
 351
 352 char *libvlc_video_get_aspect_ratio( libvlc_media_instance_t *p_mi,
 353                                      libvlc_exception_t *p_e )
 354 {
 355     char *psz_aspect = 0;
 356     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 357
 358     if( !p_vout )
 359         return 0;
 360
 361     psz_aspect = var_GetString( p_vout, "aspect-ratio" );
 362     vlc_object_release( p_vout );
 363     return psz_aspect;
 364 }
 365
 366 void libvlc_video_set_aspect_ratio( libvlc_media_instance_t *p_mi,
 367                                     char *psz_aspect, libvlc_exception_t *p_e )
 368 {
 369     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 370     int i_ret = -1;
 371
 372     if( !p_vout )
 373         return;
 374
 375     i_ret = var_SetString( p_vout, "aspect-ratio", psz_aspect );
 376     if( i_ret )
 377         libvlc_exception_raise( p_e,
 378                         "Unexpected error while setting aspect-ratio value" );
 379
 380     vlc_object_release( p_vout );
 381 }
 382
 383 int libvlc_video_get_spu( libvlc_media_instance_t *p_mi,
 384                           libvlc_exception_t *p_e )
 385 {
 386     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 387     vlc_value_t val_list;
 388     vlc_value_t val;
 389     int i_spu = -1;
 390     int i_ret = -1;
 391     int i;
 392
 393     if( !p_input_thread )
 394         return -1;
 395
 396     i_ret = var_Get( p_input_thread, "spu-es", &val );
 397     if( i_ret < 0 )
 398     {
 399         libvlc_exception_raise( p_e, "Getting subtitle information failed" );
 400         vlc_object_release( p_input_thread );
 401         return i_ret;
 402     }
 403
 404     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 405     for( i = 0; i < val_list.p_list->i_count; i++ )
 406     {
 407         vlc_value_t spu_val = val_list.p_list->p_values[i];
 408         if( val.i_int == spu_val.i_int )
 409         {
 410             i_spu = i;
 411             break;
 412         }
 413     }
 414     vlc_object_release( p_input_thread );
 415     return i_spu;
 416 }
 417
 418 void libvlc_video_set_spu( libvlc_media_instance_t *p_mi, int i_spu,
 419                            libvlc_exception_t *p_e )
 420 {
 421     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 422     vlc_value_t val_list;
 423     int i_ret = -1;
 424     int i;
 425
 426     if( !p_input_thread )
 427         return;
 428
 429     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 430     for( i = 0; i < val_list.p_list->i_count; i++ )
 431     {
 432         vlc_value_t val = val_list.p_list->p_values[i];
 433         if( i_spu == i )
 434         {
 435             vlc_value_t new_val;
 436
 437             new_val.i_int = val.i_int;
 438             i_ret = var_Set( p_input_thread, "spu-es", new_val );
 439             if( i_ret < 0 )
 440             {
 441                 libvlc_exception_raise( p_e, "Setting subtitle value failed" );
 442             }
 443             vlc_object_release( p_input_thread );
 444             return;
 445         }
 446     }
 447     libvlc_exception_raise( p_e, "Subtitle value out of range" );
 448     vlc_object_release( p_input_thread );
 449 }
 450
 451 char *libvlc_video_get_crop_geometry( libvlc_media_instance_t *p_mi,
 452                                    libvlc_exception_t *p_e )
 453 {
 454     char *psz_geometry = 0;
 455     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 456
 457     if( !p_vout )
 458         return 0;
 459
 460     psz_geometry = var_GetString( p_vout, "crop" );
 461     vlc_object_release( p_vout );
 462     return psz_geometry;
 463 }
 464
 465 void libvlc_video_set_crop_geometry( libvlc_media_instance_t *p_mi,
 466                                     char *psz_geometry, libvlc_exception_t *p_e )
 467 {
 468     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 469     int i_ret = -1;
 470
 471     if( !p_vout )
 472         return;
 473
 474     i_ret = var_SetString( p_vout, "crop", psz_geometry );
 475     if( i_ret )
 476         libvlc_exception_raise( p_e,
 477                         "Unexpected error while setting crop geometry" );
 478
 479     vlc_object_release( p_vout );
 480 }
 481
 482 int libvlc_video_get_teletext( libvlc_media_instance_t *p_mi,
 483                                libvlc_exception_t *p_e )
 484 {
 485     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 486     int i_ret = -1;
 487
 488     if( !p_vout )
 489         return i_ret;
 490
 491     i_ret = var_GetInteger( p_vout, "vbi-page" );
 492     vlc_object_release( p_vout );
 493     return i_ret;
 494 }
 495
 496 void libvlc_video_set_teletext( libvlc_media_instance_t *p_mi, int i_page,
 497                                 libvlc_exception_t *p_e )
 498 {
 499     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 500     int i_ret = -1;
 501
 502     if( !p_vout )
 503         return;
 504
 505     i_ret = var_SetInteger( p_vout, "vbi-page", i_page );
 506     if( i_ret )
 507         libvlc_exception_raise( p_e,
 508                         "Unexpected error while setting teletext page" );
 509     vlc_object_release( p_vout );
 510 }
 511
 512 int libvlc_video_destroy( libvlc_media_instance_t *p_mi,
 513                           libvlc_exception_t *p_e )
 514 {
 515     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 516     vlc_object_detach( p_vout );
 517     vlc_object_release( p_vout );
 518     vout_Destroy( p_vout );
 519
 520     return 0;
 521 }