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: Clément 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 = libvlc_get_input_thread( p_mi, p_exception );
  41     vout_thread_t *p_vout = NULL;
  42
  43     if( p_input )
  44     {
  45         p_vout = input_GetVout( p_input );
  46         if( !p_vout )
  47         {
  48             libvlc_exception_raise( p_exception, "No active video output" );
  49         }
  50         vlc_object_release( p_input );
  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, const 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     var_TriggerCallback( p_vout, "video-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 = input_GetVout( p_input_thread );
 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 float libvlc_video_get_scale( libvlc_media_player_t *p_mp,
 191                               libvlc_exception_t *p_e )
 192 {
 193     vout_thread_t *p_vout = GetVout( p_mp, p_e );
 194     if( !p_vout )
 195         return 0.;
 196
 197     float f_scale = var_GetFloat( p_vout, "scale" );
 198     if( var_GetBool( p_vout, "autoscale" ) )
 199         f_scale = 0.;
 200     vlc_object_release( p_vout );
 201     return f_scale;
 202 }
 203
 204 void libvlc_video_set_scale( libvlc_media_player_t *p_mp, float f_scale,
 205                              libvlc_exception_t *p_e )
 206 {
 207     vout_thread_t *p_vout = GetVout( p_mp, p_e );
 208     if( !p_vout )
 209         return;
 210
 211     if( f_scale != 0. )
 212         var_SetFloat( p_vout, "scale", f_scale );
 213     var_SetBool( p_vout, "autoscale", f_scale != 0. );
 214     vlc_object_release( p_vout );
 215 }
 216
 217 char *libvlc_video_get_aspect_ratio( libvlc_media_player_t *p_mi,
 218                                      libvlc_exception_t *p_e )
 219 {
 220     char *psz_aspect = 0;
 221     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 222
 223     if( !p_vout ) return 0;
 224
 225     psz_aspect = var_GetNonEmptyString( p_vout, "aspect-ratio" );
 226     vlc_object_release( p_vout );
 227     return psz_aspect ? psz_aspect : strdup("");
 228 }
 229
 230 void libvlc_video_set_aspect_ratio( libvlc_media_player_t *p_mi,
 231                                     char *psz_aspect, libvlc_exception_t *p_e )
 232 {
 233     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 234     int i_ret = -1;
 235
 236     if( !p_vout ) return;
 237
 238     i_ret = var_SetString( p_vout, "aspect-ratio", psz_aspect );
 239     if( i_ret )
 240         libvlc_exception_raise( p_e,
 241                         "Unexpected error while setting aspect-ratio value" );
 242
 243     vlc_object_release( p_vout );
 244 }
 245
 246 int libvlc_video_get_spu( libvlc_media_player_t *p_mi,
 247                           libvlc_exception_t *p_e )
 248 {
 249     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 250     vlc_value_t val_list;
 251     vlc_value_t val;
 252     int i_spu = -1;
 253     int i_ret = -1;
 254     int i;
 255
 256     if( !p_input_thread ) return -1;
 257
 258     i_ret = var_Get( p_input_thread, "spu-es", &val );
 259     if( i_ret < 0 )
 260     {
 261         libvlc_exception_raise( p_e, "Getting subtitle information failed" );
 262         vlc_object_release( p_input_thread );
 263         return i_ret;
 264     }
 265
 266     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 267     for( i = 0; i < val_list.p_list->i_count; i++ )
 268     {
 269         vlc_value_t spu_val = val_list.p_list->p_values[i];
 270         if( val.i_int == spu_val.i_int )
 271         {
 272             i_spu = i;
 273             break;
 274         }
 275     }
 276     vlc_object_release( p_input_thread );
 277     return i_spu;
 278 }
 279
 280 int libvlc_video_get_spu_count( libvlc_media_player_t *p_mi,
 281                                 libvlc_exception_t *p_e )
 282 {
 283     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 284     vlc_value_t val_list;
 285
 286     if( !p_input_thread )
 287         return -1;
 288
 289     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 290     vlc_object_release( p_input_thread );
 291     return val_list.p_list->i_count;
 292 }
 293
 294 libvlc_track_description_t *
 295         libvlc_video_get_spu_description( libvlc_media_player_t *p_mi,
 296                                           libvlc_exception_t *p_e )
 297 {
 298     return libvlc_get_track_description( p_mi, "spu-es", p_e);
 299 }
 300
 301 void libvlc_video_set_spu( libvlc_media_player_t *p_mi, int i_spu,
 302                            libvlc_exception_t *p_e )
 303 {
 304     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 305     vlc_value_t val_list;
 306     vlc_value_t newval;
 307     int i_ret = -1;
 308
 309     if( !p_input_thread ) return;
 310
 311     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 312
 313     if( val_list.p_list->i_count == 0 )
 314     {
 315         libvlc_exception_raise( p_e, "Subtitle value out of range" );
 316         vlc_object_release( p_input_thread );
 317         return;
 318     }
 319
 320     if( (i_spu < 0) && (i_spu > val_list.p_list->i_count) )
 321     {
 322         libvlc_exception_raise( p_e, "Subtitle value out of range" );
 323         vlc_object_release( p_input_thread );
 324         return;
 325     }
 326
 327     newval = val_list.p_list->p_values[i_spu];
 328     i_ret = var_Set( p_input_thread, "spu-es", newval );
 329     if( i_ret < 0 )
 330     {
 331         libvlc_exception_raise( p_e, "Setting subtitle value failed" );
 332     }
 333     vlc_object_release( p_input_thread );
 334 }
 335
 336 int libvlc_video_set_subtitle_file( libvlc_media_player_t *p_mi,
 337                                     char *psz_subtitle,
 338                                     libvlc_exception_t *p_e )
 339 {
 340     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
 341     bool b_ret = false;
 342
 343     if( p_input_thread )
 344     {
 345         if( !input_AddSubtitle( p_input_thread, psz_subtitle, true ) )
 346             b_ret = true;
 347         vlc_object_release( p_input_thread );
 348     }
 349     return b_ret;
 350 }
 351
 352 libvlc_track_description_t *
 353         libvlc_video_get_title_description( libvlc_media_player_t *p_mi,
 354                                             libvlc_exception_t * p_e )
 355 {
 356     return libvlc_get_track_description( p_mi, "title", p_e);
 357 }
 358
 359 libvlc_track_description_t *
 360         libvlc_video_get_chapter_description( libvlc_media_player_t *p_mi,
 361                                               int i_title,
 362                                               libvlc_exception_t *p_e )
 363 {
 364     char psz_title[12];
 365     sprintf( psz_title,  "title %2i", i_title );
 366     return libvlc_get_track_description( p_mi, psz_title, p_e);
 367 }
 368
 369 char *libvlc_video_get_crop_geometry( libvlc_media_player_t *p_mi,
 370                                    libvlc_exception_t *p_e )
 371 {
 372     char *psz_geometry = 0;
 373     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 374
 375     if( !p_vout ) return 0;
 376
 377     psz_geometry = var_GetNonEmptyString( p_vout, "crop" );
 378     vlc_object_release( p_vout );
 379     return psz_geometry ? psz_geometry : strdup("");
 380 }
 381
 382 void libvlc_video_set_crop_geometry( libvlc_media_player_t *p_mi,
 383                                     char *psz_geometry, libvlc_exception_t *p_e )
 384 {
 385     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 386     int i_ret = -1;
 387
 388     if( !p_vout ) return;
 389
 390     i_ret = var_SetString( p_vout, "crop", psz_geometry );
 391     if( i_ret )
 392         libvlc_exception_raise( p_e,
 393                         "Unexpected error while setting crop geometry" );
 394
 395     vlc_object_release( p_vout );
 396 }
 397
 398 int libvlc_video_get_teletext( libvlc_media_player_t *p_mi,
 399                                libvlc_exception_t *p_e )
 400 {
 401     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 402     vlc_object_t *p_vbi;
 403     int i_ret = -1;
 404
 405     if( !p_vout ) return i_ret;
 406
 407     p_vbi = (vlc_object_t *) vlc_object_find_name( p_vout, "zvbi",
 408                                                    FIND_CHILD );
 409     if( p_vbi )
 410     {
 411         i_ret = var_GetInteger( p_vbi, "vbi-page" );
 412         vlc_object_release( p_vbi );
 413     }
 414
 415     vlc_object_release( p_vout );
 416     return i_ret;
 417 }
 418
 419 void libvlc_video_set_teletext( libvlc_media_player_t *p_mi, int i_page,
 420                                 libvlc_exception_t *p_e )
 421 {
 422     vout_thread_t *p_vout = GetVout( p_mi, p_e );
 423     vlc_object_t *p_vbi;
 424     int i_ret = -1;
 425
 426     if( !p_vout ) return;
 427
 428     p_vbi = (vlc_object_t *) vlc_object_find_name( p_vout, "zvbi",
 429                                                    FIND_CHILD );
 430     if( p_vbi )
 431     {
 432         i_ret = var_SetInteger( p_vbi, "vbi-page", i_page );
 433         vlc_object_release( p_vbi );
 434         if( i_ret )
 435             libvlc_exception_raise( p_e,
 436                             "Unexpected error while setting teletext page" );
 437     }
 438     vlc_object_release( p_vout );
 439 }
 440
 441 void libvlc_toggle_teletext( libvlc_media_player_t *p_mi,
 442                              libvlc_exception_t *p_e )
 443 {
 444     input_thread_t *p_input_thread;
 445     vlc_object_t *p_vbi;
 446     int i_ret;
 447
 448     p_input_thread = libvlc_get_input_thread(p_mi, p_e);
 449     if( !p_input_thread ) return;
 450
 451     if( var_CountChoices( p_input_thread, "teletext-es" ) <= 0 )
 452     {
 453         vlc_object_release( p_input_thread );
 454         return;
 455     }
 456     const bool b_selected = var_GetInteger( p_input_thread, "teletext-es" ) >= 0;
 457
 458     p_vbi = (vlc_object_t *)vlc_object_find_name( p_input_thread, "zvbi",
 459                                                   FIND_CHILD );
 460     if( p_vbi )
 461     {
 462         if( b_selected )
 463         {
 464             /* FIXME Gni, why that ? */
 465             i_ret = var_SetInteger( p_vbi, "vbi-page",
 466                                     var_GetInteger( p_vbi, "vbi-page" ) );
 467             if( i_ret )
 468                 libvlc_exception_raise( p_e,
 469                                 "Unexpected error while setting teletext page" );
 470         }
 471         else
 472         {
 473             /* FIXME Gni^2 */
 474             i_ret = var_SetBool( p_vbi, "vbi-opaque",
 475                                  !var_GetBool( p_vbi, "vbi-opaque" ) );
 476             if( i_ret )
 477                 libvlc_exception_raise( p_e,
 478                                 "Unexpected error while setting teletext transparency" );
 479         }
 480         vlc_object_release( p_vbi );
 481     }
 482     else if( b_selected )
 483     {
 484         var_SetInteger( p_input_thread, "spu-es", -1 );
 485     }
 486     else
 487     {
 488         vlc_value_t list;
 489         if( !var_Change( p_input_thread, "teletext-es", VLC_VAR_GETLIST, &list, NULL ) )
 490         {
 491             if( list.p_list->i_count > 0 )
 492                 var_SetInteger( p_input_thread, "spu-es", list.p_list->p_values[0].i_int );
 493
 494             var_Change( p_input_thread, "teletext-es", VLC_VAR_FREELIST, &list, NULL );
 495         }
 496     }
 497     vlc_object_release( p_input_thread );
 498 }
 499
 500 int libvlc_video_get_track_count( libvlc_media_player_t *p_mi,
 501                                   libvlc_exception_t *p_e )
 502 {
 503     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 504     vlc_value_t val_list;
 505
 506     if( !p_input_thread )
 507         return -1;
 508
 509     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 510     vlc_object_release( p_input_thread );
 511     return val_list.p_list->i_count;
 512 }
 513
 514 libvlc_track_description_t *
 515         libvlc_video_get_track_description( libvlc_media_player_t *p_mi,
 516                                             libvlc_exception_t *p_e )
 517 {
 518     return libvlc_get_track_description( p_mi, "video-es", p_e);
 519 }
 520
 521 int libvlc_video_get_track( libvlc_media_player_t *p_mi,
 522                             libvlc_exception_t *p_e )
 523 {
 524     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 525     vlc_value_t val_list;
 526     vlc_value_t val;
 527     int i_track = -1;
 528     int i_ret = -1;
 529     int i;
 530
 531     if( !p_input_thread )
 532         return -1;
 533
 534     i_ret = var_Get( p_input_thread, "video-es", &val );
 535     if( i_ret < 0 )
 536     {
 537         libvlc_exception_raise( p_e, "Getting Video track information failed" );
 538         vlc_object_release( p_input_thread );
 539         return i_ret;
 540     }
 541
 542     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 543     for( i = 0; i < val_list.p_list->i_count; i++ )
 544     {
 545         vlc_value_t track_val = val_list.p_list->p_values[i];
 546         if( track_val.i_int == val.i_int )
 547         {
 548             i_track = i;
 549             break;
 550        }
 551     }
 552     vlc_object_release( p_input_thread );
 553     return i_track;
 554 }
 555
 556 void libvlc_video_set_track( libvlc_media_player_t *p_mi, int i_track,
 557                              libvlc_exception_t *p_e )
 558 {
 559     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
 560     vlc_value_t val_list;
 561     int i_ret = -1;
 562     int i;
 563
 564     if( !p_input_thread )
 565         return;
 566
 567     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 568     for( i = 0; i < val_list.p_list->i_count; i++ )
 569     {
 570         vlc_value_t val = val_list.p_list->p_values[i];
 571         if( i_track == val.i_int )
 572         {
 573             i_ret = var_Set( p_input_thread, "audio-es", val );
 574             if( i_ret < 0 )
 575                 libvlc_exception_raise( p_e, "Setting video track failed" );
 576             vlc_object_release( p_input_thread );
 577             return;
 578         }
 579     }
 580     libvlc_exception_raise( p_e, "Video track out of range" );
 581     vlc_object_release( p_input_thread );
 582 }