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 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     var_SetInteger(p_instance->p_libvlc_int, "drawable", (int)d);
 239
 240     libvlc_media_player_t *p_mi = libvlc_playlist_get_media_player(p_instance, p_e);
 241     if( p_mi )
 242     {
 243         libvlc_media_player_set_drawable( p_mi, d, p_e );
 244         libvlc_media_player_release(p_mi);
 245     }
 246 }
 247
 248 libvlc_drawable_t libvlc_video_get_parent( libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
 249 {
 250     VLC_UNUSED(p_e);
 251
 252     libvlc_drawable_t result;
 253
 254     result = var_GetInteger( p_instance->p_libvlc_int, "drawable" );
 255
 256     return result;
 257 }
 258
 259
 260 void libvlc_video_set_size( libvlc_instance_t *p_instance, int width, int height,
 261                            libvlc_exception_t *p_e )
 262 {
 263     /* set as default for future vout instances */
 264     config_PutInt(p_instance->p_libvlc_int, "width", width);
 265     config_PutInt(p_instance->p_libvlc_int, "height", height);
 266
 267     libvlc_media_player_t *p_mi = libvlc_playlist_get_media_player(p_instance, p_e);
 268     if( p_mi )
 269     {
 270         vout_thread_t *p_vout = GetVout( p_mi, p_e );
 271         if( p_vout )
 272         {
 273             /* tell running vout to re-size */
 274             vout_Control( p_vout , VOUT_SET_SIZE, width, height);
 275             vlc_object_release( p_vout );
 276         }
 277         libvlc_media_player_release(p_mi);
 278     }
 279 }
 280
 281 void libvlc_video_set_viewport( libvlc_instance_t *p_instance,
 282                             const libvlc_rectangle_t *view, const libvlc_rectangle_t *clip,
 283                            libvlc_exception_t *p_e )
 284 {
 285     if( !view )
 286     {
 287         libvlc_exception_raise( p_e, "viewport is NULL" );
 288         return;
 289     }
 290
 291     /* if clip is NULL, then use view rectangle as clip */
 292     if( !clip )
 293         clip = view;
 294
 295     /* set as default for future vout instances */
 296     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-top", view->top );
 297     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-left", view->left );
 298     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-bottom", view->bottom );
 299     var_SetInteger( p_instance->p_libvlc_int, "drawable-view-right", view->right );
 300     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-top", clip->top );
 301     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-left", clip->left );
 302     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-bottom", clip->bottom );
 303     var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-right", clip->right );
 304
 305     libvlc_media_player_t *p_mi = libvlc_playlist_get_media_player(p_instance, p_e);
 306     if( p_mi )
 307     {
 308         vout_thread_t *p_vout = GetVout( p_mi, p_e );
 309         if( p_vout )
 310         {
 311             /* change viewport for running vout */
 312             vout_Control( p_vout , VOUT_SET_VIEWPORT,
 313                                view->top, view->left, view->bottom, view->right,
 314                                clip->top, clip->left, clip->bottom, clip->right );
 315             vlc_object_release( p_vout );
 316         }
 317         libvlc_media_player_release(p_mi);
 318     }
 319 }
 320
 321 char *libvlc_video_get_aspect_ratio( libvlc_media_player_t *p_mi,
 322                                      libvlc_exception_t *p_e )
 323 {
 324     char *psz_aspect = 0;
 325     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 326
 327     if( !p_vout ) return 0;
 328
 329     psz_aspect = var_GetNonEmptyString( p_vout, "aspect-ratio" );
 330     vlc_object_release( p_vout );
 331     return psz_aspect ? psz_aspect : strdup("");
 332 }
 333
 334 void libvlc_video_set_aspect_ratio( libvlc_media_player_t *p_mi,
 335                                     char *psz_aspect, libvlc_exception_t *p_e )
 336 {
 337     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 338     int i_ret = -1;
 339
 340     if( !p_vout ) return;
 341
 342     i_ret = var_SetString( p_vout, "aspect-ratio", psz_aspect );
 343     if( i_ret )
 344         libvlc_exception_raise( p_e,
 345                         "Unexpected error while setting aspect-ratio value" );
 346
 347     vlc_object_release( p_vout );
 348 }
 349
 350 int libvlc_video_get_spu( libvlc_media_player_t *p_mi,
 351                           libvlc_exception_t *p_e )
 352 {
 353     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 354     vlc_value_t val_list;
 355     vlc_value_t val;
 356     int i_spu = -1;
 357     int i_ret = -1;
 358     int i;
 359
 360     if( !p_input_thread ) return -1;
 361
 362     i_ret = var_Get( p_input_thread, "spu-es", &val );
 363     if( i_ret < 0 )
 364     {
 365         libvlc_exception_raise( p_e, "Getting subtitle information failed" );
 366         vlc_object_release( p_input_thread );
 367         return i_ret;
 368     }
 369
 370     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 371     for( i = 0; i < val_list.p_list->i_count; i++ )
 372     {
 373         vlc_value_t spu_val = val_list.p_list->p_values[i];
 374         if( val.i_int == spu_val.i_int )
 375         {
 376             i_spu = i;
 377             break;
 378         }
 379     }
 380     vlc_object_release( p_input_thread );
 381     return i_spu;
 382 }
 383
 384 void libvlc_video_set_spu( libvlc_media_player_t *p_mi, int i_spu,
 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     int i_ret = -1;
 390     int i;
 391
 392     if( !p_input_thread ) return;
 393
 394     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 395     for( i = 0; i < val_list.p_list->i_count; i++ )
 396     {
 397         vlc_value_t val = val_list.p_list->p_values[i];
 398         if( i_spu == i )
 399         {
 400             vlc_value_t new_val;
 401
 402             new_val.i_int = val.i_int;
 403             i_ret = var_Set( p_input_thread, "spu-es", new_val );
 404             if( i_ret < 0 )
 405             {
 406                 libvlc_exception_raise( p_e, "Setting subtitle value failed" );
 407             }
 408             vlc_object_release( p_input_thread );
 409             return;
 410         }
 411     }
 412     libvlc_exception_raise( p_e, "Subtitle value out of range" );
 413     vlc_object_release( p_input_thread );
 414 }
 415
 416 int libvlc_video_set_subtitle_file( libvlc_media_player_t *p_mi,
 417                                     char *psz_subtitle,
 418                                     libvlc_exception_t *p_e )
 419 {
 420     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 421     bool b_ret = false;
 422
 423     if( p_input_thread )
 424     {
 425         if( input_AddSubtitles( p_input_thread, psz_subtitle, true ) )
 426             b_ret = true;
 427         vlc_object_release( p_input_thread );
 428     }
 429     return b_ret;
 430 }
 431
 432 char *libvlc_video_get_crop_geometry( libvlc_media_player_t *p_mi,
 433                                    libvlc_exception_t *p_e )
 434 {
 435     char *psz_geometry = 0;
 436     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 437
 438     if( !p_vout ) return 0;
 439
 440     psz_geometry = var_GetNonEmptyString( p_vout, "crop" );
 441     vlc_object_release( p_vout );
 442     return psz_geometry ? psz_geometry : strdup("");
 443 }
 444
 445 void libvlc_video_set_crop_geometry( libvlc_media_player_t *p_mi,
 446                                     char *psz_geometry, libvlc_exception_t *p_e )
 447 {
 448     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 449     int i_ret = -1;
 450
 451     if( !p_vout ) return;
 452
 453     i_ret = var_SetString( p_vout, "crop", psz_geometry );
 454     if( i_ret )
 455         libvlc_exception_raise( p_e,
 456                         "Unexpected error while setting crop geometry" );
 457
 458     vlc_object_release( p_vout );
 459 }
 460
 461 int libvlc_video_get_teletext( libvlc_media_player_t *p_mi,
 462                                libvlc_exception_t *p_e )
 463 {
 464     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 465     vlc_object_t *p_vbi;
 466     int i_ret = -1;
 467
 468     if( !p_vout ) return i_ret;
 469
 470     p_vbi = (vlc_object_t *) vlc_object_find_name( p_vout, "zvbi",
 471                                                    FIND_ANYWHERE );
 472     if( p_vbi )
 473     {
 474         i_ret = var_GetInteger( p_vbi, "vbi-page" );
 475         vlc_object_release( p_vbi );
 476     }
 477
 478     vlc_object_release( p_vout );
 479     return i_ret;
 480 }
 481
 482 void libvlc_video_set_teletext( libvlc_media_player_t *p_mi, int i_page,
 483                                 libvlc_exception_t *p_e )
 484 {
 485     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 486     vlc_object_t *p_vbi;
 487     int i_ret = -1;
 488
 489     if( !p_vout ) return;
 490
 491     p_vbi = (vlc_object_t *) vlc_object_find_name( p_vout, "zvbi",
 492                                                    FIND_ANYWHERE );
 493     if( p_vbi )
 494     {
 495         i_ret = var_SetInteger( p_vbi, "vbi-page", i_page );
 496         vlc_object_release( p_vbi );
 497     }
 498     if( i_ret )
 499         libvlc_exception_raise( p_e,
 500                         "Unexpected error while setting teletext page" );
 501     vlc_object_release( p_vout );
 502 }
 503
 504 void libvlc_toggle_teletext( libvlc_media_player_t *p_mi,
 505                              libvlc_exception_t *p_e )
 506 {
 507     /* We only work on the first vout */
 508     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 509     bool opaque; int i_ret;
 510
 511     /* GetVout will raise the exception for us */
 512     if( !p_vout ) return;
 513
 514     opaque = var_GetBool( p_vout, "vbi-opaque" );
 515     i_ret = var_SetBool( p_vout, "vbi-opaque", !opaque );
 516     if( i_ret )
 517         libvlc_exception_raise( p_e,
 518                         "Unexpected error while setting teletext value" );
 519
 520     vlc_object_release( p_vout );
 521 }
 522
 523 int libvlc_video_destroy( libvlc_media_player_t *p_mi,
 524                           libvlc_exception_t *p_e )
 525 {
 526     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 527     vlc_object_detach( p_vout );
 528     vlc_object_release( p_vout );
 529     vlc_object_release( p_vout );
 530
 531     return 0;
 532 }