lib/video.c

   1 /*****************************************************************************
   2  * video.c: libvlc new API video functions
   3  *****************************************************************************
   4  * Copyright (C) 2005-2010 VLC authors and VideoLAN
   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 it
  14  * under the terms of the GNU Lesser General Public License as published by
  15  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU Lesser General Public License
  24  * along with this program; if not, write to the Free Software Foundation,
  25  * 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. All parameters should be passed at once
 151      * (obviously _not_ with var_*()). Also, the libvlc object should not be
 152      * used for the callbacks: that breaks badly if there are concurrent
 153      * media players in the instance. */
 154     var_Create( p_vout, "snapshot-width", VLC_VAR_INTEGER );
 155     var_SetInteger( p_vout, "snapshot-width", i_width);
 156     var_Create( p_vout, "snapshot-height", VLC_VAR_INTEGER );
 157     var_SetInteger( p_vout, "snapshot-height", i_height );
 158     var_Create( p_vout, "snapshot-path", VLC_VAR_STRING );
 159     var_SetString( p_vout, "snapshot-path", psz_filepath );
 160     var_Create( p_vout, "snapshot-format", VLC_VAR_STRING );
 161     var_SetString( p_vout, "snapshot-format", "png" );
 162     var_TriggerCallback( p_vout, "video-snapshot" );
 163     vlc_object_release( p_vout );
 164     return 0;
 165 }
 166
 167 int libvlc_video_get_size( libvlc_media_player_t *p_mi, unsigned num,
 168                            unsigned *restrict px, unsigned *restrict py )
 169 {
 170     libvlc_media_track_info_t *info;
 171     int ret = -1;
 172     if (!p_mi->p_md)
 173         return ret;
 174     int infos = libvlc_media_get_tracks_info(p_mi->p_md, &info);
 175     if (infos <= 0)
 176         return ret;
 177
 178     for (int i = 0; i < infos; i++)
 179         if (info[i].i_type == libvlc_track_video && num-- == 0) {
 180             *px = info[i].u.video.i_width;
 181             *py = info[i].u.video.i_height;
 182             ret = 0;
 183             break;
 184         }
 185
 186     free(info);
 187     return ret;
 188 }
 189
 190 int libvlc_video_get_height( libvlc_media_player_t *p_mi )
 191 {
 192     unsigned width, height;
 193
 194     if (libvlc_video_get_size (p_mi, 0, &width, &height))
 195         return 0;
 196     return height;
 197 }
 198
 199 int libvlc_video_get_width( libvlc_media_player_t *p_mi )
 200 {
 201     unsigned width, height;
 202
 203     if (libvlc_video_get_size (p_mi, 0, &width, &height))
 204         return 0;
 205     return width;
 206 }
 207
 208 int libvlc_video_get_cursor( libvlc_media_player_t *mp, unsigned num,
 209                              int *restrict px, int *restrict py )
 210 {
 211     vout_thread_t *p_vout = GetVout (mp, num);
 212     if (p_vout == NULL)
 213         return -1;
 214
 215     var_GetCoords (p_vout, "mouse-moved", px, py);
 216     vlc_object_release (p_vout);
 217     return 0;
 218 }
 219
 220 unsigned libvlc_media_player_has_vout( libvlc_media_player_t *p_mi )
 221 {
 222     size_t n;
 223     vout_thread_t **pp_vouts = GetVouts (p_mi, &n);
 224     for (size_t i = 0; i < n; i++)
 225         vlc_object_release (pp_vouts[i]);
 226     free (pp_vouts);
 227     return n;
 228 }
 229
 230 float libvlc_video_get_scale( libvlc_media_player_t *mp )
 231 {
 232     float f_scale = var_GetFloat (mp, "scale");
 233     if (var_GetBool (mp, "autoscale"))
 234         f_scale = 0.;
 235     return f_scale;
 236 }
 237
 238 void libvlc_video_set_scale( libvlc_media_player_t *p_mp, float f_scale )
 239 {
 240     if (f_scale != 0.)
 241         var_SetFloat (p_mp, "scale", f_scale);
 242     var_SetBool (p_mp, "autoscale", f_scale == 0.);
 243
 244     /* Apply to current video outputs (if any) */
 245     size_t n;
 246     vout_thread_t **pp_vouts = GetVouts (p_mp, &n);
 247     for (size_t i = 0; i < n; i++)
 248     {
 249         vout_thread_t *p_vout = pp_vouts[i];
 250
 251         if (f_scale != 0.)
 252             var_SetFloat (p_vout, "scale", f_scale);
 253         var_SetBool (p_vout, "autoscale", f_scale == 0.);
 254         vlc_object_release (p_vout);
 255     }
 256     free (pp_vouts);
 257 }
 258
 259 char *libvlc_video_get_aspect_ratio( libvlc_media_player_t *p_mi )
 260 {
 261     return var_GetNonEmptyString (p_mi, "aspect-ratio");
 262 }
 263
 264 void libvlc_video_set_aspect_ratio( libvlc_media_player_t *p_mi,
 265                                     const char *psz_aspect )
 266 {
 267     if (psz_aspect == NULL)
 268         psz_aspect = "";
 269     var_SetString (p_mi, "aspect-ratio", psz_aspect);
 270
 271     size_t n;
 272     vout_thread_t **pp_vouts = GetVouts (p_mi, &n);
 273     for (size_t i = 0; i < n; i++)
 274     {
 275         vout_thread_t *p_vout = pp_vouts[i];
 276
 277         var_SetString (p_vout, "aspect-ratio", psz_aspect);
 278         vlc_object_release (p_vout);
 279     }
 280     free (pp_vouts);
 281 }
 282
 283 int libvlc_video_get_spu( libvlc_media_player_t *p_mi )
 284 {
 285     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 286
 287     if( !p_input_thread )
 288     {
 289         libvlc_printerr( "No active input" );
 290         return -1;
 291     }
 292
 293     int i_spu = var_GetInteger( p_input_thread, "spu-es" );
 294     vlc_object_release( p_input_thread );
 295     return i_spu;
 296 }
 297
 298 int libvlc_video_get_spu_count( libvlc_media_player_t *p_mi )
 299 {
 300     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 301     int i_spu_count;
 302
 303     if( !p_input_thread )
 304         return 0;
 305
 306     i_spu_count = var_CountChoices( p_input_thread, "spu-es" );
 307     vlc_object_release( p_input_thread );
 308     return i_spu_count;
 309 }
 310
 311 libvlc_track_description_t *
 312         libvlc_video_get_spu_description( libvlc_media_player_t *p_mi )
 313 {
 314     return libvlc_get_track_description( p_mi, "spu-es" );
 315 }
 316
 317 int libvlc_video_set_spu( libvlc_media_player_t *p_mi, int i_spu )
 318 {
 319     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 320     vlc_value_t list;
 321     int i_ret = -1;
 322
 323     if( !p_input_thread )
 324         return -1;
 325
 326     var_Change (p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &list, NULL);
 327     for (int i = 0; i < list.p_list->i_count; i++)
 328     {
 329         if( i_spu == list.p_list->p_values[i].i_int )
 330         {
 331             if( var_SetInteger( p_input_thread, "spu-es", i_spu ) < 0 )
 332                 break;
 333             i_ret = 0;
 334             goto end;
 335         }
 336     }
 337     libvlc_printerr( "Track identifier not found" );
 338 end:
 339     vlc_object_release (p_input_thread);
 340     var_FreeList (&list, NULL);
 341     return i_ret;
 342 }
 343
 344 int libvlc_video_set_subtitle_file( libvlc_media_player_t *p_mi,
 345                                     const char *psz_subtitle )
 346 {
 347     input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
 348     bool b_ret = false;
 349
 350     if( p_input_thread )
 351     {
 352         if( !input_AddSubtitle( p_input_thread, psz_subtitle, true ) )
 353             b_ret = true;
 354         vlc_object_release( p_input_thread );
 355     }
 356     return b_ret;
 357 }
 358
 359 int64_t libvlc_video_get_spu_delay( libvlc_media_player_t *p_mi )
 360 {
 361     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 362     int64_t val = 0;
 363
 364     if( p_input_thread )
 365     {
 366         val = var_GetTime( p_input_thread, "spu-delay" );
 367         vlc_object_release( p_input_thread );
 368     }
 369     else
 370     {
 371         libvlc_printerr( "No active input" );
 372     }
 373
 374     return val;
 375 }
 376
 377 int libvlc_video_set_spu_delay( libvlc_media_player_t *p_mi,
 378                                 int64_t i_delay )
 379 {
 380     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 381     int ret = -1;
 382
 383     if( p_input_thread )
 384     {
 385         var_SetTime( p_input_thread, "spu-delay", i_delay );
 386         vlc_object_release( p_input_thread );
 387         ret = 0;
 388     }
 389     else
 390     {
 391         libvlc_printerr( "No active input" );
 392     }
 393
 394     return ret;
 395 }
 396
 397 libvlc_track_description_t *
 398         libvlc_video_get_title_description( libvlc_media_player_t *p_mi )
 399 {
 400     return libvlc_get_track_description( p_mi, "title" );
 401 }
 402
 403 libvlc_track_description_t *
 404         libvlc_video_get_chapter_description( libvlc_media_player_t *p_mi,
 405                                               int i_title )
 406 {
 407     char psz_title[12];
 408     sprintf( psz_title,  "title %2i", i_title );
 409     return libvlc_get_track_description( p_mi, psz_title );
 410 }
 411
 412 char *libvlc_video_get_crop_geometry (libvlc_media_player_t *p_mi)
 413 {
 414     return var_GetNonEmptyString (p_mi, "crop");
 415 }
 416
 417 void libvlc_video_set_crop_geometry( libvlc_media_player_t *p_mi,
 418                                      const char *psz_geometry )
 419 {
 420     if (psz_geometry == NULL)
 421         psz_geometry = "";
 422
 423     var_SetString (p_mi, "crop", psz_geometry);
 424
 425     size_t n;
 426     vout_thread_t **pp_vouts = GetVouts (p_mi, &n);
 427
 428     for (size_t i = 0; i < n; i++)
 429     {
 430         vout_thread_t *p_vout = pp_vouts[i];
 431         vlc_value_t val;
 432
 433         /* Make sure the geometry is in the choice list */
 434         /* Earlier choices are removed to not grow a long list over time. */
 435         /* FIXME: not atomic - lock? */
 436         val.psz_string = (char *)psz_geometry;
 437         var_Change (p_vout, "crop", VLC_VAR_CLEARCHOICES, NULL, NULL);
 438         var_Change (p_vout, "crop", VLC_VAR_ADDCHOICE, &val, &val);
 439         var_SetString (p_vout, "crop", psz_geometry);
 440         vlc_object_release (p_vout);
 441     }
 442     free (pp_vouts);
 443 }
 444
 445 int libvlc_video_get_teletext( libvlc_media_player_t *p_mi )
 446 {
 447     return var_GetInteger (p_mi, "vbi-page");
 448 }
 449
 450 void libvlc_video_set_teletext( libvlc_media_player_t *p_mi, int i_page )
 451 {
 452     input_thread_t *p_input_thread;
 453     vlc_object_t *p_zvbi = NULL;
 454     int telx;
 455
 456     var_SetInteger (p_mi, "vbi-page", i_page);
 457
 458     p_input_thread = libvlc_get_input_thread( p_mi );
 459     if( !p_input_thread ) return;
 460
 461     if( var_CountChoices( p_input_thread, "teletext-es" ) <= 0 )
 462     {
 463         vlc_object_release( p_input_thread );
 464         return;
 465     }
 466
 467     telx = var_GetInteger( p_input_thread, "teletext-es" );
 468     if( input_GetEsObjects( p_input_thread, telx, &p_zvbi, NULL, NULL )
 469         == VLC_SUCCESS )
 470     {
 471         var_SetInteger( p_zvbi, "vbi-page", i_page );
 472         vlc_object_release( p_zvbi );
 473     }
 474     vlc_object_release( p_input_thread );
 475 }
 476
 477 void libvlc_toggle_teletext( libvlc_media_player_t *p_mi )
 478 {
 479     input_thread_t *p_input_thread;
 480
 481     p_input_thread = libvlc_get_input_thread(p_mi);
 482     if( !p_input_thread ) return;
 483
 484     if( var_CountChoices( p_input_thread, "teletext-es" ) <= 0 )
 485     {
 486         vlc_object_release( p_input_thread );
 487         return;
 488     }
 489     const bool b_selected = var_GetInteger( p_input_thread, "teletext-es" ) >= 0;
 490     if( b_selected )
 491     {
 492         var_SetInteger( p_input_thread, "spu-es", -1 );
 493     }
 494     else
 495     {
 496         vlc_value_t list;
 497         if( !var_Change( p_input_thread, "teletext-es", VLC_VAR_GETLIST, &list, NULL ) )
 498         {
 499             if( list.p_list->i_count > 0 )
 500                 var_SetInteger( p_input_thread, "spu-es", list.p_list->p_values[0].i_int );
 501
 502             var_FreeList( &list, NULL );
 503         }
 504     }
 505     vlc_object_release( p_input_thread );
 506 }
 507
 508 int libvlc_video_get_track_count( libvlc_media_player_t *p_mi )
 509 {
 510     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 511     int i_track_count;
 512
 513     if( !p_input_thread )
 514         return -1;
 515
 516     i_track_count = var_CountChoices( p_input_thread, "video-es" );
 517
 518     vlc_object_release( p_input_thread );
 519     return i_track_count;
 520 }
 521
 522 libvlc_track_description_t *
 523         libvlc_video_get_track_description( libvlc_media_player_t *p_mi )
 524 {
 525     return libvlc_get_track_description( p_mi, "video-es" );
 526 }
 527
 528 int libvlc_video_get_track( libvlc_media_player_t *p_mi )
 529 {
 530     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 531
 532     if( !p_input_thread )
 533         return -1;
 534
 535     int id = var_GetInteger( p_input_thread, "video-es" );
 536     vlc_object_release( p_input_thread );
 537     return id;
 538 }
 539
 540 int libvlc_video_set_track( libvlc_media_player_t *p_mi, int i_track )
 541 {
 542     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi );
 543     vlc_value_t val_list;
 544     int i_ret = -1;
 545
 546     if( !p_input_thread )
 547         return -1;
 548
 549     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
 550     for( int i = 0; i < val_list.p_list->i_count; i++ )
 551     {
 552         if( i_track == val_list.p_list->p_values[i].i_int )
 553         {
 554             if( var_SetInteger( p_input_thread, "video-es", i_track ) < 0 )
 555                 break;
 556             i_ret = 0;
 557             goto end;
 558         }
 559     }
 560     libvlc_printerr( "Track identifier not found" );
 561 end:
 562     var_FreeList( &val_list, NULL );
 563     vlc_object_release( p_input_thread );
 564     return i_ret;
 565 }
 566
 567 /******************************************************************************
 568  * libvlc_video_set_deinterlace : enable deinterlace
 569  *****************************************************************************/
 570 void libvlc_video_set_deinterlace( libvlc_media_player_t *p_mi,
 571                                    const char *psz_mode )
 572 {
 573     if (psz_mode == NULL)
 574         psz_mode = "";
 575     if (*psz_mode
 576      && strcmp (psz_mode, "blend")    && strcmp (psz_mode, "bob")
 577      && strcmp (psz_mode, "discard")  && strcmp (psz_mode, "linear")
 578      && strcmp (psz_mode, "mean")     && strcmp (psz_mode, "x")
 579      && strcmp (psz_mode, "yadif")    && strcmp (psz_mode, "yadif2x")
 580      && strcmp (psz_mode, "phosphor") && strcmp (psz_mode, "ivtc"))
 581         return;
 582
 583     if (*psz_mode)
 584     {
 585         var_SetString (p_mi, "deinterlace-mode", psz_mode);
 586         var_SetInteger (p_mi, "deinterlace", 1);
 587     }
 588     else
 589         var_SetInteger (p_mi, "deinterlace", 0);
 590
 591     size_t n;
 592     vout_thread_t **pp_vouts = GetVouts (p_mi, &n);
 593     for (size_t i = 0; i < n; i++)
 594     {
 595         vout_thread_t *p_vout = pp_vouts[i];
 596
 597         if (*psz_mode)
 598         {
 599             var_SetString (p_vout, "deinterlace-mode", psz_mode);
 600             var_SetInteger (p_vout, "deinterlace", 1);
 601         }
 602         else
 603             var_SetInteger (p_vout, "deinterlace", 0);
 604         vlc_object_release (p_vout);
 605     }
 606     free (pp_vouts);
 607 }
 608
 609 /* ************** */
 610 /* module helpers */
 611 /* ************** */
 612
 613
 614 static vlc_object_t *get_object( libvlc_media_player_t * p_mi,
 615                                  const char *name )
 616 {
 617     vlc_object_t *object;
 618     vout_thread_t *vout = GetVout( p_mi, 0 );
 619
 620     if( vout )
 621     {
 622         object = vlc_object_find_name( vout, name );
 623         vlc_object_release(vout);
 624     }
 625     else
 626         object = NULL;
 627
 628     if( !object )
 629         libvlc_printerr( "%s not enabled", name );
 630     return object;
 631 }
 632
 633
 634 typedef const struct {
 635     const char name[20];
 636     unsigned type;
 637 } opt_t;
 638
 639
 640 static void
 641 set_int( libvlc_media_player_t *p_mi, const char *restrict name,
 642          const opt_t *restrict opt, int value )
 643 {
 644     if( !opt ) return;
 645
 646     if( !opt->type ) /* the enabler */
 647     {
 648         vout_thread_t *vout = GetVout( p_mi, 0 );
 649         if (vout)
 650         {
 651             vout_EnableFilter( vout, opt->name, value, false );
 652             vlc_object_release( vout );
 653         }
 654         return;
 655     }
 656
 657     if( opt->type != VLC_VAR_INTEGER )
 658     {
 659         libvlc_printerr( "Invalid argument to %s in %s", name, "set int" );
 660         return;
 661     }
 662
 663     var_SetInteger(p_mi, opt->name, value);
 664     vlc_object_t *object = get_object( p_mi, name );
 665     if( object )
 666     {
 667         var_SetInteger(object, opt->name, value);
 668         vlc_object_release( object );
 669     }
 670 }
 671
 672
 673 static int
 674 get_int( libvlc_media_player_t *p_mi, const char *restrict name,
 675          const opt_t *restrict opt )
 676 {
 677     if( !opt ) return 0;
 678
 679     switch( opt->type )
 680     {
 681         case 0: /* the enabler */
 682         {
 683             vlc_object_t *object = get_object( p_mi, name );
 684             vlc_object_release( object );
 685             return object != NULL;
 686         }
 687     case VLC_VAR_INTEGER:
 688         return var_GetInteger(p_mi, opt->name);
 689     default:
 690         libvlc_printerr( "Invalid argument to %s in %s", name, "get int" );
 691         return 0;
 692     }
 693 }
 694
 695
 696 static void
 697 set_float( libvlc_media_player_t *p_mi, const char *restrict name,
 698             const opt_t *restrict opt, float value )
 699 {
 700     if( !opt ) return;
 701
 702     if( opt->type != VLC_VAR_FLOAT )
 703     {
 704         libvlc_printerr( "Invalid argument to %s in %s", name, "set float" );
 705         return;
 706     }
 707
 708     var_SetFloat( p_mi, opt->name, value );
 709
 710     vlc_object_t *object = get_object( p_mi, name );
 711     if( object )
 712     {
 713         var_SetFloat(object, opt->name, value );
 714         vlc_object_release( object );
 715     }
 716 }
 717
 718
 719 static float
 720 get_float( libvlc_media_player_t *p_mi, const char *restrict name,
 721             const opt_t *restrict opt )
 722 {
 723     if( !opt ) return 0.0;
 724
 725
 726     if( opt->type != VLC_VAR_FLOAT )
 727     {
 728         libvlc_printerr( "Invalid argument to %s in %s", name, "get float" );
 729         return 0.0;
 730     }
 731
 732     return var_GetFloat( p_mi, opt->name );
 733 }
 734
 735
 736 static void
 737 set_string( libvlc_media_player_t *p_mi, const char *restrict name,
 738             const opt_t *restrict opt, const char *restrict psz_value )
 739 {
 740     if( !opt ) return;
 741
 742     if( opt->type != VLC_VAR_STRING )
 743     {
 744         libvlc_printerr( "Invalid argument to %s in %s", name, "set string" );
 745         return;
 746     }
 747
 748     var_SetString( p_mi, opt->name, psz_value );
 749
 750     vlc_object_t *object = get_object( p_mi, name );
 751     if( object )
 752     {
 753         var_SetString(object, opt->name, psz_value );
 754         vlc_object_release( object );
 755     }
 756 }
 757
 758
 759 static char *
 760 get_string( libvlc_media_player_t *p_mi, const char *restrict name,
 761             const opt_t *restrict opt )
 762 {
 763     if( !opt ) return NULL;
 764
 765     if( opt->type != VLC_VAR_STRING )
 766     {
 767         libvlc_printerr( "Invalid argument to %s in %s", name, "get string" );
 768         return NULL;
 769     }
 770
 771     return var_GetString( p_mi, opt->name );
 772 }
 773
 774
 775 static const opt_t *
 776 marq_option_bynumber(unsigned option)
 777 {
 778     static const opt_t optlist[] =
 779     {
 780         { "marq",          0 },
 781         { "marq-marquee",  VLC_VAR_STRING },
 782         { "marq-color",    VLC_VAR_INTEGER },
 783         { "marq-opacity",  VLC_VAR_INTEGER },
 784         { "marq-position", VLC_VAR_INTEGER },
 785         { "marq-refresh",  VLC_VAR_INTEGER },
 786         { "marq-size",     VLC_VAR_INTEGER },
 787         { "marq-timeout",  VLC_VAR_INTEGER },
 788         { "marq-x",        VLC_VAR_INTEGER },
 789         { "marq-y",        VLC_VAR_INTEGER },
 790     };
 791     enum { num_opts = sizeof(optlist) / sizeof(*optlist) };
 792
 793     const opt_t *r = option < num_opts ? optlist+option : NULL;
 794     if( !r )
 795         libvlc_printerr( "Unknown marquee option" );
 796     return r;
 797 }
 798
 799 static vlc_object_t *get_object( libvlc_media_player_t *, const char *);
 800
 801 /*****************************************************************************
 802  * libvlc_video_get_marquee_int : get a marq option value
 803  *****************************************************************************/
 804 int libvlc_video_get_marquee_int( libvlc_media_player_t *p_mi,
 805                                   unsigned option )
 806 {
 807     return get_int( p_mi, "marq", marq_option_bynumber(option) );
 808 }
 809
 810 /*****************************************************************************
 811  * libvlc_video_get_marquee_string : get a marq option value
 812  *****************************************************************************/
 813 char * libvlc_video_get_marquee_string( libvlc_media_player_t *p_mi,
 814                                         unsigned option )
 815 {
 816     return get_string( p_mi, "marq", marq_option_bynumber(option) );
 817 }
 818
 819 /*****************************************************************************
 820  * libvlc_video_set_marquee_int: enable, disable or set an int option
 821  *****************************************************************************/
 822 void libvlc_video_set_marquee_int( libvlc_media_player_t *p_mi,
 823                          unsigned option, int value )
 824 {
 825     set_int( p_mi, "marq", marq_option_bynumber(option), value );
 826 }
 827
 828 /*****************************************************************************
 829  * libvlc_video_set_marquee_string: set a string option
 830  *****************************************************************************/
 831 void libvlc_video_set_marquee_string( libvlc_media_player_t *p_mi,
 832                 unsigned option, const char * value )
 833 {
 834     set_string( p_mi, "marq", marq_option_bynumber(option), value );
 835 }
 836
 837
 838 /* logo module support */
 839
 840
 841 static const opt_t *
 842 logo_option_bynumber( unsigned option )
 843 {
 844     static const opt_t vlogo_optlist[] =
 845     /* depends on libvlc_video_logo_option_t */
 846     {
 847         { "logo",          0 },
 848         { "logo-file",     VLC_VAR_STRING },
 849         { "logo-x",        VLC_VAR_INTEGER },
 850         { "logo-y",        VLC_VAR_INTEGER },
 851         { "logo-delay",    VLC_VAR_INTEGER },
 852         { "logo-repeat",   VLC_VAR_INTEGER },
 853         { "logo-opacity",  VLC_VAR_INTEGER },
 854         { "logo-position", VLC_VAR_INTEGER },
 855     };
 856     enum { num_vlogo_opts = sizeof(vlogo_optlist) / sizeof(*vlogo_optlist) };
 857
 858     const opt_t *r = option < num_vlogo_opts ? vlogo_optlist+option : NULL;
 859     if( !r )
 860         libvlc_printerr( "Unknown logo option" );
 861     return r;
 862 }
 863
 864
 865 void libvlc_video_set_logo_string( libvlc_media_player_t *p_mi,
 866                                    unsigned option, const char *psz_value )
 867 {
 868     set_string( p_mi,"logo",logo_option_bynumber(option),psz_value );
 869 }
 870
 871
 872 void libvlc_video_set_logo_int( libvlc_media_player_t *p_mi,
 873                                 unsigned option, int value )
 874 {
 875     set_int( p_mi, "logo", logo_option_bynumber(option), value );
 876 }
 877
 878
 879 int libvlc_video_get_logo_int( libvlc_media_player_t *p_mi,
 880                                unsigned option )
 881 {
 882     return get_int( p_mi, "logo", logo_option_bynumber(option) );
 883 }
 884
 885
 886 /* adjust module support */
 887
 888
 889 static const opt_t *
 890 adjust_option_bynumber( unsigned option )
 891 {
 892     static const opt_t optlist[] =
 893     {
 894         { "adjust",               0 },
 895         { "contrast",             VLC_VAR_FLOAT },
 896         { "brightness",           VLC_VAR_FLOAT },
 897         { "hue",                  VLC_VAR_INTEGER },
 898         { "saturation",           VLC_VAR_FLOAT },
 899         { "gamma",                VLC_VAR_FLOAT },
 900     };
 901     enum { num_opts = sizeof(optlist) / sizeof(*optlist) };
 902
 903     const opt_t *r = option < num_opts ? optlist+option : NULL;
 904     if( !r )
 905         libvlc_printerr( "Unknown adjust option" );
 906     return r;
 907 }
 908
 909
 910 void libvlc_video_set_adjust_int( libvlc_media_player_t *p_mi,
 911                                   unsigned option, int value )
 912 {
 913     set_int( p_mi, "adjust", adjust_option_bynumber(option), value );
 914 }
 915
 916
 917 int libvlc_video_get_adjust_int( libvlc_media_player_t *p_mi,
 918                                  unsigned option )
 919 {
 920     return get_int( p_mi, "adjust", adjust_option_bynumber(option) );
 921 }
 922
 923
 924 void libvlc_video_set_adjust_float( libvlc_media_player_t *p_mi,
 925                                     unsigned option, float value )
 926 {
 927     set_float( p_mi, "adjust", adjust_option_bynumber(option), value );
 928 }
 929
 930
 931 float libvlc_video_get_adjust_float( libvlc_media_player_t *p_mi,
 932                                      unsigned option )
 933 {
 934     return get_float( p_mi, "adjust", adjust_option_bynumber(option) );
 935 }