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