lib/video.c

   1 /*****************************************************************************
   2  * video.c: libvlc new API video functions
   3  *****************************************************************************
   4  * Copyright (C) 2005-2010 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 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc/libvlc.h>
  33 #include <vlc/libvlc_media.h>
  34 #include <vlc/libvlc_media_player.h>
  35
  36 #include <vlc_common.h>
  37 #include <vlc_input.h>
  38 #include <vlc_vout.h>
  39
  40 #include "media_player_internal.h"
  41 #include <assert.h>
  42
  43 /*
  44  * Remember to release the returned vout_thread_t.
  45  */
  46 static vout_thread_t **GetVouts( libvlc_media_player_t *p_mi, size_t *n )
  47 {
  48     input_thread_t *p_input = libvlc_get_input_thread( p_mi );
  49     if( !p_input )
  50     {
  51         *n = 0;
  52         return NULL;
  53     }
  54
  55     vout_thread_t **pp_vouts;
  56     if (input_Control( p_input, INPUT_GET_VOUTS, &pp_vouts, n))
  57     {
  58         *n = 0;
  59         pp_vouts = NULL;
  60     }
  61     vlc_object_release (p_input);
  62     return pp_vouts;
  63 }
  64
  65 static vout_thread_t *GetVout (libvlc_media_player_t *mp, size_t num)
  66 {
  67     vout_thread_t *p_vout = NULL;
  68     size_t n;
  69     vout_thread_t **pp_vouts = GetVouts (mp, &n);
  70     if (pp_vouts == NULL)
  71         goto err;
  72
  73     if (num < n)
  74         p_vout = pp_vouts[num];
  75
  76     for (size_t i = 0; i < n; i++)
  77         if (i != num)
  78             vlc_object_release (pp_vouts[i]);
  79     free (pp_vouts);
  80
  81     if (p_vout == NULL)
  82 err:
  83         libvlc_printerr ("Video output not active");
  84     return p_vout;
  85 }
  86
  87 /**********************************************************************
  88  * Exported functions
  89  **********************************************************************/
  90
  91 void libvlc_set_fullscreen( libvlc_media_player_t *p_mi, int b_fullscreen )
  92 {
  93     /* This will work even if the video is not currently active */
  94     var_SetBool (p_mi, "fullscreen", !!b_fullscreen);
  95
  96     /* Apply to current video outputs (if any) */
  97     size_t n;
  98     vout_thread_t **pp_vouts = GetVouts (p_mi, &n);
  99     for (size_t i = 0; i < n; i++)
 100     {
 101         var_SetBool (pp_vouts[i], "fullscreen", b_fullscreen);
 102         vlc_object_release (pp_vouts[i]);
 103     }
 104     free (pp_vouts);
 105 }
 106
 107 int libvlc_get_fullscreen( libvlc_media_player_t *p_mi )
 108 {
 109     return var_GetBool (p_mi, "fullscreen");
 110 }
 111
 112 void libvlc_toggle_fullscreen( libvlc_media_player_t *p_mi )
 113 {
 114     bool b_fullscreen = var_ToggleBool (p_mi, "fullscreen");
 115
 116     /* Apply to current video outputs (if any) */
 117     size_t n;
 118     vout_thread_t **pp_vouts = GetVouts (p_mi, &n);
 119     for (size_t i = 0; i < n; i++)
 120     {
 121         vout_thread_t *p_vout = pp_vouts[i];
 122
 123         var_SetBool (p_vout, "fullscreen", b_fullscreen);
 124         vlc_object_release (p_vout);
 125     }
 126     free (pp_vouts);
 127 }
 128
 129 void libvlc_video_set_key_input( libvlc_media_player_t *p_mi, unsigned on )
 130 {
 131     var_SetBool (p_mi, "keyboard-events", !!on);
 132 }
 133
 134 void libvlc_video_set_mouse_input( libvlc_media_player_t *p_mi, unsigned on )
 135 {
 136     var_SetBool (p_mi, "mouse-events", !!on);
 137 }
 138
 139 int
 140 libvlc_video_take_snapshot( libvlc_media_player_t *p_mi, unsigned num,
 141                             const char *psz_filepath,
 142                             unsigned int i_width, unsigned int i_height )
 143 {
 144     assert( psz_filepath );
 145
 146     vout_thread_t *p_vout = GetVout (p_mi, num);
 147     if (p_vout == NULL)
 148         return -1;
 149
 150     /* FIXME: This is not atomic. Someone else could change the values,
 151      * at least in theory. */
 152     var_SetInteger( p_vout, "snapshot-width", i_width);
 153     var_SetInteger( p_vout, "snapshot-height", i_height );
 154     var_SetString( p_vout, "snapshot-path", psz_filepath );
 155     var_SetString( p_vout, "snapshot-format", "png" );
 156     var_TriggerCallback( p_vout, "video-snapshot" );
 157     vlc_object_release( p_vout );
 158     return 0;
 159 }
 160
 161 int libvlc_video_get_size( libvlc_media_player_t *p_mi, unsigned num,
 162                            unsigned *restrict px, unsigned *restrict py )
 163 {
 164 #if 0
 165     vout_thread_t *p_vout = GetVout (p_mi, num);
 166     if (p_vout == NULL)
 167         return -1;
 168
 169     *px = p_vout->i_window_height;
 170     *py = p_vout->i_window_width;
 171     vlc_object_release (p_vout);
 172     return 0;
 173 #else
 174     return -1;
 175 #endif
 176 }
 177
 178 int libvlc_video_get_height( libvlc_media_player_t *p_mi )
 179 {
 180     unsigned height, width;
 181
 182     if (libvlc_video_get_size (p_mi, 0, &height, &width))
 183         return 0;
 184     return height;
 185 }
 186
 187 int libvlc_video_get_width( libvlc_media_player_t *p_mi )
 188 {
 189     unsigned height, width;
 190
 191     if (libvlc_video_get_size (p_mi, 0, &height, &width))
 192         return 0;
 193     return width;
 194 }
 195
 196 int libvlc_video_get_cursor( libvlc_media_player_t *mp, unsigned num,
 197                              int *restrict px, int *restrict py )
 198 {
 199     vout_thread_t *p_vout = GetVout (mp, num);
 200     if (p_vout == NULL)
 201         return -1;
 202
 203     var_GetCoords (p_vout, "mouse-moved", px, py);
 204     vlc_object_release (p_vout);
 205     return 0;
 206 }
 207
 208 unsigned libvlc_media_player_has_vout( libvlc_media_player_t *p_mi )
 209 {
 210     size_t n;
 211     vout_thread_t **pp_vouts = GetVouts (p_mi, &n);
 212     for (size_t i = 0; i < n; i++)
 213         vlc_object_release (pp_vouts[i]);
 214     free (pp_vouts);
 215     return n;
 216 }
 217
 218 float libvlc_video_get_scale( libvlc_media_player_t *mp )
 219 {
 220     float f_scale = var_GetFloat (mp, "scale");
 221     if (var_GetBool (mp, "autoscale"))
 222         f_scale = 0.;
 223     return f_scale;
 224 }
 225
 226 void libvlc_video_set_scale( libvlc_media_player_t *p_mp, float f_scale )
 227 {
 228     if (f_scale != 0.)
 229         var_SetFloat (p_mp, "scale", f_scale);
 230     var_SetBool (p_mp, "autoscale", f_scale == 0.);
 231
 232     /* Apply to current video outputs (if any) */
 233     size_t n;
 234     vout_thread_t **pp_vouts = GetVouts (p_mp, &n);
 235     for (size_t i = 0; i < n; i++)
 236     {
 237         vout_thread_t *p_vout = pp_vouts[i];
 238
 239         if (f_scale != 0.)
 240             var_SetFloat (p_vout, "scale", f_scale);
 241         var_SetBool (p_vout, "autoscale", f_scale == 0.);
 242         vlc_object_release (p_vout);
 243     }
 244     free (pp_vouts);
 245 }
 246
 247 char *libvlc_video_get_aspect_ratio( libvlc_media_player_t *p_mi )
 248 {
 249     return var_GetNonEmptyString (p_mi, "aspect-ratio");
 250 }
 251
 252 void libvlc_video_set_aspect_ratio( libvlc_media_player_t *p_mi,
 253                                     const char *psz_aspect )
 254 {
 255     if (psz_aspect == NULL)
 256         psz_aspect = "";
 257     var_SetString (p_mi, "aspect-ratio", psz_aspect);
 258
 259     size_t n;
 260     vout_thread_t **pp_vouts = GetVouts (p_mi, &n);
 261     for (size_t i = 0; i < n; i++)
 262     {
 263         vout_thread_t *p_vout = pp_vouts[i];
 264
 265         var_SetString (p_vout, "aspect-ratio", psz_aspect);
 266         vlc_object_release (p_vout);
 267     }
 268     free (pp_vouts);
 269 }
 270
 271 int libvlc_video_get_spu( libvlc_media_player_t *p_mi )
 272 {
 273     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 274     vlc_value_t val_list;
 275     vlc_value_t val;
 276     int i_spu = -1;
 277     int i_ret = -1;
 278     int i;
 279
 280     if( !p_input_thread )
 281     {
 282         libvlc_printerr( "No active input" );
 283         return -1;
 284     }
 285
 286     i_ret = var_Get( p_input_thread, "spu-es", &val );
 287     if( i_ret < 0 )
 288     {
 289         vlc_object_release( p_input_thread );
 290         libvlc_printerr( "Subtitle information not found" );
 291         return -1;
 292     }
 293
 294     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 295     for( i = 0; i < val_list.p_list->i_count; i++ )
 296     {
 297         if( val.i_int == val_list.p_list->p_values[i].i_int )
 298         {
 299             i_spu = i;
 300             break;
 301         }
 302     }
 303     var_FreeList( &val_list, NULL );
 304     vlc_object_release( p_input_thread );
 305     return i_spu;
 306 }
 307
 308 int libvlc_video_get_spu_count( libvlc_media_player_t *p_mi )
 309 {
 310     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 311     int i_spu_count;
 312
 313     if( !p_input_thread )
 314         return 0;
 315
 316     i_spu_count = var_CountChoices( p_input_thread, "spu-es" );
 317     vlc_object_release( p_input_thread );
 318     return i_spu_count;
 319 }
 320
 321 libvlc_track_description_t *
 322         libvlc_video_get_spu_description( libvlc_media_player_t *p_mi )
 323 {
 324     return libvlc_get_track_description( p_mi, "spu-es" );
 325 }
 326
 327 int libvlc_video_set_spu( libvlc_media_player_t *p_mi, unsigned i_spu )
 328 {
 329     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 330     vlc_value_t list;
 331     int i_ret = 0;
 332
 333     if( !p_input_thread )
 334         return -1;
 335
 336     var_Change (p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &list, NULL);
 337
 338     if (i_spu > (unsigned)list.p_list->i_count)
 339     {
 340         libvlc_printerr( "Subtitle number out of range (%u/%u)",
 341                          i_spu, list.p_list->i_count );
 342         i_ret = -1;
 343         goto end;
 344     }
 345     var_SetInteger (p_input_thread, "spu-es",
 346                     list.p_list->p_values[i_spu].i_int);
 347 end:
 348     vlc_object_release (p_input_thread);
 349     var_FreeList (&list, NULL);
 350     return i_ret;
 351 }
 352
 353 int libvlc_video_set_subtitle_file( libvlc_media_player_t *p_mi,
 354                                     const char *psz_subtitle )
 355 {
 356     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
 357     bool b_ret = false;
 358
 359     if( p_input_thread )
 360     {
 361         if( !input_AddSubtitle( p_input_thread, psz_subtitle, true ) )
 362             b_ret = true;
 363         vlc_object_release( p_input_thread );
 364     }
 365     return b_ret;
 366 }
 367
 368 libvlc_track_description_t *
 369         libvlc_video_get_title_description( libvlc_media_player_t *p_mi )
 370 {
 371     return libvlc_get_track_description( p_mi, "title" );
 372 }
 373
 374 libvlc_track_description_t *
 375         libvlc_video_get_chapter_description( libvlc_media_player_t *p_mi,
 376                                               int i_title )
 377 {
 378     char psz_title[12];
 379     sprintf( psz_title,  "title %2i", i_title );
 380     return libvlc_get_track_description( p_mi, psz_title );
 381 }
 382
 383 char *libvlc_video_get_crop_geometry (libvlc_media_player_t *p_mi)
 384 {
 385     return var_GetNonEmptyString (p_mi, "crop");
 386 }
 387
 388 void libvlc_video_set_crop_geometry( libvlc_media_player_t *p_mi,
 389                                      const char *psz_geometry )
 390 {
 391     if (psz_geometry == NULL)
 392         psz_geometry = "";
 393
 394     var_SetString (p_mi, "crop", psz_geometry);
 395
 396     size_t n;
 397     vout_thread_t **pp_vouts = GetVouts (p_mi, &n);
 398
 399     for (size_t i = 0; i < n; i++)
 400     {
 401         vout_thread_t *p_vout = pp_vouts[i];
 402         vlc_value_t val;
 403
 404         /* Make sure the geometry is in the choice list */
 405         /* Earlier choices are removed to not grow a long list over time. */
 406         /* FIXME: not atomic - lock? */
 407         val.psz_string = (char *)psz_geometry;
 408         var_Change (p_vout, "crop", VLC_VAR_CLEARCHOICES, NULL, NULL);
 409         var_Change (p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &val);
 410         var_SetString (p_vout, "crop", psz_geometry);
 411         vlc_object_release (p_vout);
 412     }
 413     free (pp_vouts);
 414 }
 415
 416 int libvlc_video_get_teletext( libvlc_media_player_t *p_mi )
 417 {
 418     return var_GetInteger (p_mi, "vbi-page");
 419 }
 420
 421 void libvlc_video_set_teletext( libvlc_media_player_t *p_mi, int i_page )
 422 {
 423     input_thread_t *p_input_thread;
 424     vlc_object_t *p_zvbi = NULL;
 425     int telx;
 426
 427     var_SetInteger (p_mi, "vbi-page", i_page);
 428
 429     p_input_thread = libvlc_get_input_thread( p_mi );
 430     if( !p_input_thread ) return;
 431
 432     if( var_CountChoices( p_input_thread, "teletext-es" ) <= 0 )
 433     {
 434         vlc_object_release( p_input_thread );
 435         return;
 436     }
 437
 438     telx = var_GetInteger( p_input_thread, "teletext-es" );
 439     if( input_GetEsObjects( p_input_thread, telx, &p_zvbi, NULL, NULL )
 440         == VLC_SUCCESS )
 441     {
 442         var_SetInteger( p_zvbi, "vbi-page", i_page );
 443         vlc_object_release( p_zvbi );
 444     }
 445     vlc_object_release( p_input_thread );
 446 }
 447
 448 void libvlc_toggle_teletext( libvlc_media_player_t *p_mi )
 449 {
 450     input_thread_t *p_input_thread;
 451
 452     p_input_thread = libvlc_get_input_thread(p_mi);
 453     if( !p_input_thread ) return;
 454
 455     if( var_CountChoices( p_input_thread, "teletext-es" ) <= 0 )
 456     {
 457         vlc_object_release( p_input_thread );
 458         return;
 459     }
 460     const bool b_selected = var_GetInteger( p_input_thread, "teletext-es" ) >= 0;
 461     if( b_selected )
 462     {
 463         var_SetInteger( p_input_thread, "spu-es", -1 );
 464     }
 465     else
 466     {
 467         vlc_value_t list;
 468         if( !var_Change( p_input_thread, "teletext-es", VLC_VAR_GETLIST, &list, NULL ) )
 469         {
 470             if( list.p_list->i_count > 0 )
 471                 var_SetInteger( p_input_thread, "spu-es", list.p_list->p_values[0].i_int );
 472
 473             var_FreeList( &list, NULL );
 474         }
 475     }
 476     vlc_object_release( p_input_thread );
 477 }
 478
 479 int libvlc_video_get_track_count( libvlc_media_player_t *p_mi )
 480 {
 481     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 482     int i_track_count;
 483
 484     if( !p_input_thread )
 485         return -1;
 486
 487     i_track_count = var_CountChoices( p_input_thread, "video-es" );
 488
 489     vlc_object_release( p_input_thread );
 490     return i_track_count;
 491 }
 492
 493 libvlc_track_description_t *
 494         libvlc_video_get_track_description( libvlc_media_player_t *p_mi )
 495 {
 496     return libvlc_get_track_description( p_mi, "video-es" );
 497 }
 498
 499 int libvlc_video_get_track( libvlc_media_player_t *p_mi )
 500 {
 501     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 502     vlc_value_t val_list;
 503     vlc_value_t val;
 504     int i_track = -1;
 505
 506     if( !p_input_thread )
 507         return -1;
 508
 509     if( var_Get( p_input_thread, "video-es", &val ) < 0 )
 510     {
 511         libvlc_printerr( "Video track information not found" );
 512         vlc_object_release( p_input_thread );
 513         return -1;
 514     }
 515
 516     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 517     for( int i = 0; i < val_list.p_list->i_count; i++ )
 518     {
 519         if( val_list.p_list->p_values[i].i_int == val.i_int )
 520         {
 521             i_track = i;
 522             break;
 523         }
 524     }
 525     var_FreeList( &val_list, NULL );
 526     vlc_object_release( p_input_thread );
 527     return i_track;
 528 }
 529
 530 int libvlc_video_set_track( libvlc_media_player_t *p_mi, int i_track )
 531 {
 532     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 533     vlc_value_t val_list;
 534     int i_ret = -1;
 535
 536     if( !p_input_thread )
 537         return -1;
 538
 539     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 540     for( int i = 0; i < val_list.p_list->i_count; i++ )
 541     {
 542         if( i_track == val_list.p_list->p_values[i].i_int )
 543         {
 544             if( var_SetInteger( p_input_thread, "video-es", i_track ) < 0 )
 545                 break;
 546             i_ret = 0;
 547             goto end;
 548         }
 549     }
 550     libvlc_printerr( "Video track number out of range" );
 551 end:
 552     var_FreeList( &val_list, NULL );
 553     vlc_object_release( p_input_thread );
 554     return i_ret;
 555 }
 556
 557 /******************************************************************************
 558  * libvlc_video_set_deinterlace : enable deinterlace
 559  *****************************************************************************/
 560 void libvlc_video_set_deinterlace( libvlc_media_player_t *p_mi,
 561                                    const char *psz_mode )
 562 {
 563     if (psz_mode == NULL)
 564         psz_mode = "";
 565     if (*psz_mode
 566      && strcmp (psz_mode, "blend")    && strcmp (psz_mode, "bob")
 567      && strcmp (psz_mode, "discard")  && strcmp (psz_mode, "linear")
 568      && strcmp (psz_mode, "mean")     && strcmp (psz_mode, "x")
 569      && strcmp (psz_mode, "yadif")    && strcmp (psz_mode, "yadif2x")
 570      && strcmp (psz_mode, "phosphor") && strcmp (psz_mode, "ivtc"))
 571         return;
 572
 573     if (*psz_mode)
 574     {
 575         var_SetString (p_mi, "deinterlace-mode", psz_mode);
 576         var_SetInteger (p_mi, "deinterlace", 1);
 577     }
 578     else
 579         var_SetInteger (p_mi, "deinterlace", 0);
 580
 581     size_t n;
 582     vout_thread_t **pp_vouts = GetVouts (p_mi, &n);
 583     for (size_t i = 0; i < n; i++)
 584     {
 585         vout_thread_t *p_vout = pp_vouts[i];
 586
 587         if (*psz_mode)
 588         {
 589             var_SetString (p_vout, "deinterlace-mode", psz_mode);
 590             var_SetInteger (p_vout, "deinterlace", 1);
 591         }
 592         else
 593             var_SetInteger (p_vout, "deinterlace", 0);
 594         vlc_object_release (p_vout);
 595     }
 596     free (pp_vouts);
 597 }
 598
 599 /* ************** */
 600 /* module helpers */
 601 /* ************** */
 602
 603
 604 static vlc_object_t *get_object( libvlc_media_player_t * p_mi,
 605                                  const char *name )
 606 {
 607     vlc_object_t *object;
 608     vout_thread_t *vout = GetVout( p_mi, 0 );
 609
 610     if( vout )
 611     {
 612         object = vlc_object_find_name( vout, name );
 613         vlc_object_release(vout);
 614     }
 615     else
 616         object = NULL;
 617
 618     if( !object )
 619         libvlc_printerr( "%s not enabled", name );
 620     return object;
 621 }
 622
 623
 624 typedef const struct {
 625     const char name[20];
 626     unsigned type;
 627 } opt_t;
 628
 629
 630 static void
 631 set_int( libvlc_media_player_t *p_mi, const char *restrict name,
 632          const opt_t *restrict opt, int value )
 633 {
 634     if( !opt ) return;
 635
 636     if( !opt->type ) /* the enabler */
 637     {
 638         vout_thread_t *vout = GetVout( p_mi, 0 );
 639         if (vout)
 640         {
 641             vout_EnableFilter( vout, opt->name, value, false );
 642             vlc_object_release( vout );
 643         }
 644         return;
 645     }
 646
 647     if( opt->type != VLC_VAR_INTEGER )
 648     {
 649         libvlc_printerr( "Invalid argument to %s in %s", name, "set int" );
 650         return;
 651     }
 652
 653     var_SetInteger(p_mi, opt->name, value);
 654     vlc_object_t *object = get_object( p_mi, name );
 655     if( object )
 656     {
 657         var_SetInteger(object, opt->name, value);
 658         vlc_object_release( object );
 659     }
 660 }
 661
 662
 663 static int
 664 get_int( libvlc_media_player_t *p_mi, const char *restrict name,
 665          const opt_t *restrict opt )
 666 {
 667     if( !opt ) return 0;
 668
 669     switch( opt->type )
 670     {
 671         case 0: /* the enabler */
 672         {
 673             vlc_object_t *object = get_object( p_mi, name );
 674             vlc_object_release( object );
 675             return object != NULL;
 676         }
 677     case VLC_VAR_INTEGER:
 678         return var_GetInteger(p_mi, opt->name);
 679     default:
 680         libvlc_printerr( "Invalid argument to %s in %s", name, "get int" );
 681         return 0;
 682     }
 683 }
 684
 685
 686 static void
 687 set_float( libvlc_media_player_t *p_mi, const char *restrict name,
 688             const opt_t *restrict opt, float value )
 689 {
 690     if( !opt ) return;
 691
 692     if( opt->type != VLC_VAR_FLOAT )
 693     {
 694         libvlc_printerr( "Invalid argument to %s in %s", name, "set float" );
 695         return;
 696     }
 697
 698     var_SetFloat( p_mi, opt->name, value );
 699
 700     vlc_object_t *object = get_object( p_mi, name );
 701     if( object )
 702     {
 703         var_SetFloat(object, opt->name, value );
 704         vlc_object_release( object );
 705     }
 706 }
 707
 708
 709 static float
 710 get_float( libvlc_media_player_t *p_mi, const char *restrict name,
 711             const opt_t *restrict opt )
 712 {
 713     if( !opt ) return 0.0;
 714
 715
 716     if( opt->type != VLC_VAR_FLOAT )
 717     {
 718         libvlc_printerr( "Invalid argument to %s in %s", name, "get float" );
 719         return 0.0;
 720     }
 721
 722     return var_GetFloat( p_mi, opt->name );
 723 }
 724
 725
 726 static void
 727 set_string( libvlc_media_player_t *p_mi, const char *restrict name,
 728             const opt_t *restrict opt, const char *restrict psz_value )
 729 {
 730     if( !opt ) return;
 731
 732     if( opt->type != VLC_VAR_STRING )
 733     {
 734         libvlc_printerr( "Invalid argument to %s in %s", name, "set string" );
 735         return;
 736     }
 737
 738     var_SetString( p_mi, opt->name, psz_value );
 739
 740     vlc_object_t *object = get_object( p_mi, name );
 741     if( object )
 742     {
 743         var_SetString(object, opt->name, psz_value );
 744         vlc_object_release( object );
 745     }
 746 }
 747
 748
 749 static char *
 750 get_string( libvlc_media_player_t *p_mi, const char *restrict name,
 751             const opt_t *restrict opt )
 752 {
 753     if( !opt ) return NULL;
 754
 755     if( opt->type != VLC_VAR_STRING )
 756     {
 757         libvlc_printerr( "Invalid argument to %s in %s", name, "get string" );
 758         return NULL;
 759     }
 760
 761     return var_GetString( p_mi, opt->name );
 762 }
 763
 764
 765 static const opt_t *
 766 marq_option_bynumber(unsigned option)
 767 {
 768     static const opt_t optlist[] =
 769     {
 770         { "marq",          0 },
 771         { "marq-marquee",  VLC_VAR_STRING },
 772         { "marq-color",    VLC_VAR_INTEGER },
 773         { "marq-opacity",  VLC_VAR_INTEGER },
 774         { "marq-position", VLC_VAR_INTEGER },
 775         { "marq-refresh",  VLC_VAR_INTEGER },
 776         { "marq-size",     VLC_VAR_INTEGER },
 777         { "marq-timeout",  VLC_VAR_INTEGER },
 778         { "marq-x",        VLC_VAR_INTEGER },
 779         { "marq-y",        VLC_VAR_INTEGER },
 780     };
 781     enum { num_opts = sizeof(optlist) / sizeof(*optlist) };
 782
 783     const opt_t *r = option < num_opts ? optlist+option : NULL;
 784     if( !r )
 785         libvlc_printerr( "Unknown marquee option" );
 786     return r;
 787 }
 788
 789 static vlc_object_t *get_object( libvlc_media_player_t *, const char *);
 790
 791 /*****************************************************************************
 792  * libvlc_video_get_marquee_int : get a marq option value
 793  *****************************************************************************/
 794 int libvlc_video_get_marquee_int( libvlc_media_player_t *p_mi,
 795                                   unsigned option )
 796 {
 797     return get_int( p_mi, "marq", marq_option_bynumber(option) );
 798 }
 799
 800 /*****************************************************************************
 801  * libvlc_video_get_marquee_string : get a marq option value
 802  *****************************************************************************/
 803 char * libvlc_video_get_marquee_string( libvlc_media_player_t *p_mi,
 804                                         unsigned option )
 805 {
 806     return get_string( p_mi, "marq", marq_option_bynumber(option) );
 807 }
 808
 809 /*****************************************************************************
 810  * libvlc_video_set_marquee_int: enable, disable or set an int option
 811  *****************************************************************************/
 812 void libvlc_video_set_marquee_int( libvlc_media_player_t *p_mi,
 813                          unsigned option, int value )
 814 {
 815     set_int( p_mi, "marq", marq_option_bynumber(option), value );
 816 }
 817
 818 /*****************************************************************************
 819  * libvlc_video_set_marquee_string: set a string option
 820  *****************************************************************************/
 821 void libvlc_video_set_marquee_string( libvlc_media_player_t *p_mi,
 822                 unsigned option, const char * value )
 823 {
 824     set_string( p_mi, "marq", marq_option_bynumber(option), value );
 825 }
 826
 827
 828 /* logo module support */
 829
 830
 831 static const opt_t *
 832 logo_option_bynumber( unsigned option )
 833 {
 834     static const opt_t vlogo_optlist[] =
 835     /* depends on libvlc_video_logo_option_t */
 836     {
 837         { "logo",          0 },
 838         { "logo-file",     VLC_VAR_STRING },
 839         { "logo-x",        VLC_VAR_INTEGER },
 840         { "logo-y",        VLC_VAR_INTEGER },
 841         { "logo-delay",    VLC_VAR_INTEGER },
 842         { "logo-repeat",   VLC_VAR_INTEGER },
 843         { "logo-opacity",  VLC_VAR_INTEGER },
 844         { "logo-position", VLC_VAR_INTEGER },
 845     };
 846     enum { num_vlogo_opts = sizeof(vlogo_optlist) / sizeof(*vlogo_optlist) };
 847
 848     const opt_t *r = option < num_vlogo_opts ? vlogo_optlist+option : NULL;
 849     if( !r )
 850         libvlc_printerr( "Unknown logo option" );
 851     return r;
 852 }
 853
 854
 855 void libvlc_video_set_logo_string( libvlc_media_player_t *p_mi,
 856                                    unsigned option, const char *psz_value )
 857 {
 858     set_string( p_mi,"logo",logo_option_bynumber(option),psz_value );
 859 }
 860
 861
 862 void libvlc_video_set_logo_int( libvlc_media_player_t *p_mi,
 863                                 unsigned option, int value )
 864 {
 865     set_int( p_mi, "logo", logo_option_bynumber(option), value );
 866 }
 867
 868
 869 int libvlc_video_get_logo_int( libvlc_media_player_t *p_mi,
 870                                unsigned option )
 871 {
 872     return get_int( p_mi, "logo", logo_option_bynumber(option) );
 873 }
 874
 875
 876 /* adjust module support */
 877
 878
 879 static const opt_t *
 880 adjust_option_bynumber( unsigned option )
 881 {
 882     static const opt_t optlist[] =
 883     {
 884         { "adjust",               0 },
 885         { "contrast",             VLC_VAR_FLOAT },
 886         { "brightness",           VLC_VAR_FLOAT },
 887         { "hue",                  VLC_VAR_INTEGER },
 888         { "saturation",           VLC_VAR_FLOAT },
 889         { "gamma",                VLC_VAR_FLOAT },
 890     };
 891     enum { num_opts = sizeof(optlist) / sizeof(*optlist) };
 892
 893     const opt_t *r = option < num_opts ? optlist+option : NULL;
 894     if( !r )
 895         libvlc_printerr( "Unknown adjust option" );
 896     return r;
 897 }
 898
 899
 900 void libvlc_video_set_adjust_int( libvlc_media_player_t *p_mi,
 901                                   unsigned option, int value )
 902 {
 903     set_int( p_mi, "adjust", adjust_option_bynumber(option), value );
 904 }
 905
 906
 907 int libvlc_video_get_adjust_int( libvlc_media_player_t *p_mi,
 908                                  unsigned option )
 909 {
 910     return get_int( p_mi, "adjust", adjust_option_bynumber(option) );
 911 }
 912
 913
 914 void libvlc_video_set_adjust_float( libvlc_media_player_t *p_mi,
 915                                     unsigned option, float value )
 916 {
 917     set_float( p_mi, "adjust", adjust_option_bynumber(option), value );
 918 }
 919
 920
 921 float libvlc_video_get_adjust_float( libvlc_media_player_t *p_mi,
 922                                      unsigned option )
 923 {
 924     return get_float( p_mi, "adjust", adjust_option_bynumber(option) );
 925 }