git.sesse.net Git - vlc/blob - modules/video_filter/mosaic.c

   1 /*****************************************************************************
   2  * mosaic.c : Mosaic video plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2004-2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea@via.ecp.fr>
   8  *          Christophe Massiot <massiot@via.ecp.fr>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23 *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #define _GNU_SOURCE
  29 #include <stdlib.h>                                      /* malloc(), free() */
  30 #include <string.h>
  31 #include <math.h>
  32
  33 #include <vlc/vlc.h>
  34 #include <vlc_vout.h>
  35
  36 #ifdef HAVE_LIMITS_H
  37 #   include <limits.h> /* INT_MAX */
  38 #endif
  39
  40 #include "vlc_filter.h"
  41 #include "vlc_image.h"
  42
  43 #include "mosaic.h"
  44
  45 #define BLANK_DELAY I64C(1000000)
  46
  47 /*****************************************************************************
  48  * Local prototypes
  49  *****************************************************************************/
  50 static int  CreateFilter    ( vlc_object_t * );
  51 static void DestroyFilter   ( vlc_object_t * );
  52
  53 static subpicture_t *Filter( filter_t *, mtime_t );
  54
  55 static int MosaicCallback( vlc_object_t *, char const *, vlc_value_t,
  56                            vlc_value_t, void * );
  57
  58 /*****************************************************************************
  59  * filter_sys_t : filter descriptor
  60  *****************************************************************************/
  61 struct filter_sys_t
  62 {
  63     vlc_mutex_t lock;
  64     vlc_mutex_t *p_lock;
  65
  66     image_handler_t *p_image;
  67     picture_t *p_pic;
  68
  69     int i_position; /* mosaic positioning method */
  70     vlc_bool_t b_ar; /* do we keep the aspect ratio ? */
  71     vlc_bool_t b_keep; /* do we keep the original picture format ? */
  72     int i_width, i_height; /* mosaic height and width */
  73     int i_cols, i_rows; /* mosaic rows and cols */
  74     int i_align; /* mosaic alignment in background video */
  75     int i_xoffset, i_yoffset; /* top left corner offset */
  76     int i_borderw, i_borderh; /* border width/height between miniatures */
  77     int i_alpha; /* subfilter alpha blending */
  78
  79     vlc_bool_t b_bs; /* Bluescreen vars */
  80     int i_bsu, i_bsv, i_bsut, i_bsvt;
  81
  82     char **ppsz_order; /* list of picture-id */
  83     int i_order_length;
  84
  85     int *pi_x_offsets; /* list of substreams x offsets */
  86     int *pi_y_offsets; /* list of substreams y offsets */
  87     int i_offsets_length;
  88
  89     mtime_t i_delay;
  90 };
  91
  92 /*****************************************************************************
  93  * Module descriptor
  94  *****************************************************************************/
  95 #define ALPHA_TEXT N_("Transparency")
  96 #define ALPHA_LONGTEXT N_( \
  97         "Transparency of the mosaic foreground pictures. " \
  98         "0 means transparent, 255 opaque (default)." )
  99
 100 #define HEIGHT_TEXT N_("Height")
 101 #define HEIGHT_LONGTEXT N_( "Total height of the mosaic, in pixels." )
 102 #define WIDTH_TEXT N_("Width")
 103 #define WIDTH_LONGTEXT N_( "Total width of the mosaic, in pixels." )
 104
 105 #define XOFFSET_TEXT N_("Top left corner X coordinate")
 106 #define XOFFSET_LONGTEXT N_( \
 107         "X Coordinate of the top-left corner of the mosaic.")
 108 #define YOFFSET_TEXT N_("Top left corner Y coordinate")
 109 #define YOFFSET_LONGTEXT N_( \
 110         "Y Coordinate of the top-left corner of the mosaic.")
 111
 112 #define BORDERW_TEXT N_("Border width")
 113 #define BORDERW_LONGTEXT N_( \
 114         "Width in pixels of the border between miniatures." )
 115 #define BORDERH_TEXT N_("Border height")
 116 #define BORDERH_LONGTEXT N_( \
 117         "Height in pixels of the border between miniatures." )
 118
 119 #define ALIGN_TEXT N_("Mosaic alignment" )
 120 #define ALIGN_LONGTEXT N_( \
 121         "You can enforce the mosaic alignment on the video " \
 122         "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
 123         "also use combinations of these values, eg 6 = top-right).")
 124
 125 #define POS_TEXT N_("Positioning method")
 126 #define POS_LONGTEXT N_( \
 127         "Positioning method for the mosaic. auto: " \
 128         "automatically choose the best number of rows and columns. " \
 129         "fixed: use the user-defined number of rows and columns. " \
 130         "offsets: use the user-defined offsets for each image." )
 131
 132 #define ROWS_TEXT N_("Number of rows")
 133 #define ROWS_LONGTEXT N_( \
 134         "Number of image rows in the mosaic (only used if " \
 135         "positionning method is set to \"fixed\")." )
 136
 137 #define COLS_TEXT N_("Number of columns")
 138 #define COLS_LONGTEXT N_( \
 139         "Number of image columns in the mosaic (only used if " \
 140         "positionning method is set to \"fixed\"." )
 141
 142 #define AR_TEXT N_("Keep aspect ratio")
 143 #define AR_LONGTEXT N_( \
 144         "Keep the original aspect ratio when resizing " \
 145         "mosaic elements." )
 146 #define KEEP_TEXT N_("Keep original size")
 147 #define KEEP_LONGTEXT N_( \
 148         "Keep the original size of mosaic elements." )
 149
 150 #define ORDER_TEXT N_("Elements order" )
 151 #define ORDER_LONGTEXT N_( \
 152         "You can enforce the order of the elements on " \
 153         "the mosaic. You must give a comma-separated list of picture ID(s)." \
 154         "These IDs are assigned in the \"mosaic-bridge\" module." )
 155
 156 #define OFFSETS_TEXT N_("Offsets in order" )
 157 #define OFFSETS_LONGTEXT N_( \
 158         "You can enforce the (x,y) offsets of the elements on the mosaic " \
 159         "(only used if positioning method is set to \"offsets\"). You " \
 160         "must give a comma-separated list of coordinates (eg: 10,10,150,10)." )
 161
 162 #define DELAY_TEXT N_("Delay")
 163 #define DELAY_LONGTEXT N_( \
 164         "Pictures coming from the mosaic elements will be delayed " \
 165         "according to this value (in milliseconds). For high " \
 166         "values you will need to raise caching at input.")
 167
 168 #define BLUESCREEN_TEXT N_("Bluescreen" )
 169 #define BLUESCREEN_LONGTEXT N_( \
 170         "This effect, also known as \"greenscreen\" or \"chroma key\" blends " \
 171         "the \"blue parts\" of the foreground images of the mosaic on the " \
 172         "background (like weather forecast). You can choose the \"key\" " \
 173         "color for blending (blue by default)." )
 174
 175 #define BLUESCREENU_TEXT N_("Bluescreen U value")
 176 #define BLUESCREENU_LONGTEXT N_( \
 177         "\"U\" value for the bluescreen key color " \
 178         "(in YUV values). From 0 to 255. Defaults to 120 for blue." )
 179 #define BLUESCREENV_TEXT N_("Bluescreen V value")
 180 #define BLUESCREENV_LONGTEXT N_( \
 181         "\"V\" value for the bluescreen key color " \
 182         "(in YUV values). From 0 to 255. Defaults to 90 for blue." )
 183 #define BLUESCREENUTOL_TEXT N_("Bluescreen U tolerance")
 184 #define BLUESCREENUTOL_LONGTEXT N_( \
 185         "Tolerance of the bluescreen blender " \
 186         "on color variations for the U plane. A value between 10 and 20 " \
 187         "seems sensible." )
 188 #define BLUESCREENVTOL_TEXT N_("Bluescreen V tolerance")
 189 #define BLUESCREENVTOL_LONGTEXT N_( \
 190         "Tolerance of the bluescreen blender " \
 191         "on color variations for the V plane. A value between 10 and 20 " \
 192         "seems sensible." )
 193
 194 static int pi_pos_values[] = { 0, 1, 2 };
 195 static const char * ppsz_pos_descriptions[] =
 196 { N_("auto"), N_("fixed"), N_("offsets") };
 197
 198 static int pi_align_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
 199 static const char *ppsz_align_descriptions[] =
 200      { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
 201      N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
 202
 203 #define CFG_PREFIX "mosaic-"
 204
 205 vlc_module_begin();
 206     set_description( _("Mosaic video sub filter") );
 207     set_shortname( _("Mosaic") );
 208     set_category( CAT_VIDEO );
 209     set_subcategory( SUBCAT_VIDEO_SUBPIC);
 210     set_capability( "sub filter", 0 );
 211     set_callbacks( CreateFilter, DestroyFilter );
 212
 213     add_integer( CFG_PREFIX "alpha", 255, NULL,
 214                  ALPHA_TEXT, ALPHA_LONGTEXT, VLC_FALSE );
 215
 216     add_integer( CFG_PREFIX "height", 100, NULL,
 217                  HEIGHT_TEXT, HEIGHT_LONGTEXT, VLC_FALSE );
 218     add_integer( CFG_PREFIX "width", 100, NULL,
 219                  WIDTH_TEXT, WIDTH_LONGTEXT, VLC_FALSE );
 220
 221     add_integer( CFG_PREFIX "align", 5, NULL,
 222                  ALIGN_TEXT, ALIGN_LONGTEXT, VLC_TRUE);
 223         change_integer_list( pi_align_values, ppsz_align_descriptions, 0 );
 224
 225     add_integer( CFG_PREFIX "xoffset", 0, NULL,
 226                  XOFFSET_TEXT, XOFFSET_LONGTEXT, VLC_TRUE );
 227     add_integer( CFG_PREFIX "yoffset", 0, NULL,
 228                  YOFFSET_TEXT, YOFFSET_LONGTEXT, VLC_TRUE );
 229
 230     add_integer( CFG_PREFIX "borderw", 0, NULL,
 231                  BORDERW_TEXT, BORDERW_LONGTEXT, VLC_TRUE );
 232         add_deprecated( CFG_PREFIX "vborder", VLC_FALSE );
 233     add_integer( CFG_PREFIX "borderh", 0, NULL,
 234                  BORDERH_TEXT, BORDERH_LONGTEXT, VLC_TRUE );
 235         add_deprecated( CFG_PREFIX "hborder", VLC_FALSE );
 236
 237     add_integer( CFG_PREFIX "position", 0, NULL,
 238                  POS_TEXT, POS_LONGTEXT, VLC_FALSE );
 239         change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
 240     add_integer( CFG_PREFIX "rows", 2, NULL,
 241                  ROWS_TEXT, ROWS_LONGTEXT, VLC_FALSE );
 242     add_integer( CFG_PREFIX "cols", 2, NULL,
 243                  COLS_TEXT, COLS_LONGTEXT, VLC_FALSE );
 244
 245     add_bool( CFG_PREFIX "keep-aspect-ratio", 0, NULL,
 246               AR_TEXT, AR_LONGTEXT, VLC_FALSE );
 247     add_bool( CFG_PREFIX "keep-picture", 0, NULL,
 248               KEEP_TEXT, KEEP_LONGTEXT, VLC_FALSE );
 249
 250     add_string( CFG_PREFIX "order", "", NULL,
 251                 ORDER_TEXT, ORDER_LONGTEXT, VLC_FALSE );
 252
 253     add_string( CFG_PREFIX "offsets", "", NULL,
 254                 OFFSETS_TEXT, OFFSETS_LONGTEXT, VLC_FALSE );
 255
 256     add_integer( CFG_PREFIX "delay", 0, NULL, DELAY_TEXT, DELAY_LONGTEXT,
 257                  VLC_FALSE );
 258
 259     set_section( N_("Bluescreen effect"), NULL );
 260     add_bool( CFG_PREFIX "bs", 0, NULL, BLUESCREEN_TEXT,
 261               BLUESCREEN_LONGTEXT, VLC_FALSE );
 262     add_integer_with_range( CFG_PREFIX "bsu", 120, 0, 255, NULL,
 263                             BLUESCREENU_TEXT, BLUESCREENU_LONGTEXT, VLC_FALSE );
 264     add_integer_with_range( CFG_PREFIX "bsv", 90, 0, 255, NULL,
 265                             BLUESCREENV_TEXT, BLUESCREENV_LONGTEXT, VLC_FALSE );
 266     add_integer_with_range( CFG_PREFIX "bsut", 17, 0, 255, NULL,
 267                             BLUESCREENUTOL_TEXT, BLUESCREENUTOL_LONGTEXT,
 268                             VLC_FALSE );
 269     add_integer_with_range( CFG_PREFIX "bsvt", 17, 0, 255, NULL,
 270                             BLUESCREENVTOL_TEXT, BLUESCREENVTOL_LONGTEXT,
 271                             VLC_FALSE );
 272
 273     var_Create( p_module->p_libvlc_global, "mosaic-lock", VLC_VAR_MUTEX );
 274 vlc_module_end();
 275
 276 static const char *ppsz_filter_options[] = {
 277     "alpha", "height", "width", "align", "xoffset", "yoffset",
 278     "borderw", "borderh", "position", "rows", "cols",
 279     "keep-aspect-ratio", "keep-picture", "order", "offsets",
 280     "delay", "bs", "bsu", "bsv", "bsut", "bsvt", NULL
 281 };
 282
 283 /*****************************************************************************
 284  * mosaic_ParseSetOffsets:
 285  * parse the "--mosaic-offsets x1,y1,x2,y2,x3,y3" parameter
 286  * and set the corresponding struct filter_sys_t entries.
 287  *****************************************************************************/
 288 static void mosaic_ParseSetOffsets( vlc_object_t *p_this, filter_sys_t *p_sys, char *psz_offsets )
 289 {
 290     if( psz_offsets[0] != 0 )
 291     {
 292         char *psz_end = NULL;
 293         int i_index = 0;
 294         do
 295         {
 296             i_index++;
 297
 298             p_sys->pi_x_offsets = realloc( p_sys->pi_x_offsets, i_index * sizeof(int) );
 299             p_sys->pi_x_offsets[i_index - 1] = atoi( psz_offsets );
 300             psz_end = strchr( psz_offsets, ',' );
 301             psz_offsets = psz_end + 1;
 302
 303             p_sys->pi_y_offsets = realloc( p_sys->pi_y_offsets, i_index * sizeof(int) );
 304             p_sys->pi_y_offsets[i_index - 1] = atoi( psz_offsets );
 305             psz_end = strchr( psz_offsets, ',' );
 306             psz_offsets = psz_end + 1;
 307
 308             msg_Dbg( p_this, CFG_PREFIX "offset: id %d, x=%d, y=%d", i_index, p_sys->pi_x_offsets[i_index - 1], p_sys->pi_y_offsets[i_index - 1] );
 309
 310         } while( NULL != psz_end );
 311         p_sys->i_offsets_length = i_index;
 312     }
 313 }
 314
 315 /*****************************************************************************
 316  * CreateFiler: allocate mosaic video filter
 317  *****************************************************************************/
 318 static int CreateFilter( vlc_object_t *p_this )
 319 {
 320     filter_t *p_filter = (filter_t *)p_this;
 321     filter_sys_t *p_sys;
 322     libvlc_global_data_t *p_libvlc_global = p_filter->p_libvlc_global;
 323     char *psz_order;
 324     char *psz_offsets;
 325     int i_index;
 326     vlc_value_t val;
 327
 328     /* The mosaic thread is more important than the decoder threads */
 329     vlc_thread_set_priority( p_this, VLC_THREAD_PRIORITY_OUTPUT );
 330
 331     /* Allocate structure */
 332     p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 333     if( p_sys == NULL )
 334     {
 335         msg_Err( p_filter, "out of memory" );
 336         return VLC_ENOMEM;
 337     }
 338
 339     p_filter->pf_sub_filter = Filter;
 340     p_sys->p_pic = NULL;
 341
 342     vlc_mutex_init( p_filter, &p_sys->lock );
 343     vlc_mutex_lock( &p_sys->lock );
 344
 345     var_Get( p_libvlc_global, "mosaic-lock", &val );
 346     p_sys->p_lock = val.p_address;
 347
 348     config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
 349                        p_filter->p_cfg );
 350
 351 #define GET_VAR( name, min, max )                                           \
 352     p_sys->i_##name = __MIN( max, __MAX( min,                               \
 353         var_CreateGetIntegerCommand( p_filter, CFG_PREFIX #name ) ) );      \
 354     var_AddCallback( p_filter, CFG_PREFIX #name, MosaicCallback, p_sys );
 355
 356     GET_VAR( width, 0, INT_MAX );
 357     GET_VAR( height, 0, INT_MAX );
 358     GET_VAR( xoffset, 0, INT_MAX );
 359     GET_VAR( yoffset, 0, INT_MAX );
 360
 361     GET_VAR( align, 0, 10 );
 362     if( p_sys->i_align == 3 || p_sys->i_align == 7 )
 363         p_sys->i_align = 5;
 364
 365     GET_VAR( borderw, 0, INT_MAX );
 366     GET_VAR( borderh, 0, INT_MAX );
 367     GET_VAR( rows, 1, INT_MAX );
 368     GET_VAR( cols, 1, INT_MAX );
 369     GET_VAR( alpha, 0, 255 );
 370     GET_VAR( position, 0, 2 );
 371     GET_VAR( delay, 100, INT_MAX );
 372     p_sys->i_delay *= 1000;
 373
 374     p_sys->b_ar = var_CreateGetBoolCommand( p_filter,
 375                                             CFG_PREFIX "keep-aspect-ratio" );
 376     var_AddCallback( p_filter, CFG_PREFIX "keep-aspect-ratio", MosaicCallback,
 377                      p_sys );
 378
 379     p_sys->b_keep = var_CreateGetBool( p_filter, CFG_PREFIX "keep-picture" );
 380     if ( !p_sys->b_keep )
 381     {
 382         p_sys->p_image = image_HandlerCreate( p_filter );
 383     }
 384
 385     p_sys->i_order_length = 0;
 386     p_sys->ppsz_order = NULL;
 387     psz_order = var_CreateGetStringCommand( p_filter, CFG_PREFIX "order" );
 388     var_AddCallback( p_filter, CFG_PREFIX "order", MosaicCallback, p_sys );
 389
 390     if( psz_order[0] != 0 )
 391     {
 392         char *psz_end = NULL;
 393         i_index = 0;
 394         do
 395         {
 396             psz_end = strchr( psz_order, ',' );
 397             i_index++;
 398             p_sys->ppsz_order = realloc( p_sys->ppsz_order,
 399                                          i_index * sizeof(char *) );
 400             p_sys->ppsz_order[i_index - 1] = strndup( psz_order,
 401                                            psz_end - psz_order );
 402             psz_order = psz_end+1;
 403         } while( NULL !=  psz_end );
 404         p_sys->i_order_length = i_index;
 405     }
 406
 407     /* Manage specific offsets for substreams */
 408     psz_offsets = var_CreateGetStringCommand( p_filter, CFG_PREFIX "offsets" );
 409     p_sys->i_offsets_length = 0;
 410     p_sys->pi_x_offsets = NULL;
 411     p_sys->pi_y_offsets = NULL;
 412     mosaic_ParseSetOffsets( (vlc_object_t *) p_filter, p_sys, psz_offsets );
 413     var_AddCallback( p_filter, CFG_PREFIX "offsets", MosaicCallback, p_sys );
 414
 415     /* Bluescreen specific stuff */
 416     GET_VAR( bsu, 0x00, 0xff );
 417     GET_VAR( bsv, 0x00, 0xff );
 418     GET_VAR( bsut, 0x00, 0xff );
 419     GET_VAR( bsvt, 0x00, 0xff );
 420     p_sys->b_bs = var_CreateGetBoolCommand( p_filter, CFG_PREFIX "bs" );
 421     var_AddCallback( p_filter, CFG_PREFIX "bs", MosaicCallback, p_sys );
 422     if( p_sys->b_bs && p_sys->b_keep )
 423     {
 424         msg_Warn( p_filter, CFG_PREFIX "keep-picture needs to be disabled for"
 425                             " bluescreen to work" );
 426     }
 427
 428     vlc_mutex_unlock( &p_sys->lock );
 429
 430     return VLC_SUCCESS;
 431 }
 432
 433 /*****************************************************************************
 434  * DestroyFilter: destroy mosaic video filter
 435  *****************************************************************************/
 436 static void DestroyFilter( vlc_object_t *p_this )
 437 {
 438     filter_t *p_filter = (filter_t*)p_this;
 439     filter_sys_t *p_sys = p_filter->p_sys;
 440     libvlc_global_data_t *p_libvlc_global = p_filter->p_libvlc_global;
 441     int i_index;
 442
 443     vlc_mutex_lock( &p_sys->lock );
 444
 445     if( !p_sys->b_keep )
 446     {
 447         image_HandlerDelete( p_sys->p_image );
 448     }
 449
 450     if( p_sys->i_order_length )
 451     {
 452         for( i_index = 0; i_index < p_sys->i_order_length; i_index++ )
 453         {
 454             free( p_sys->ppsz_order[i_index] );
 455         }
 456         free( p_sys->ppsz_order );
 457     }
 458     if( p_sys->i_offsets_length )
 459     {
 460         free( p_sys->pi_x_offsets );
 461         free( p_sys->pi_y_offsets );
 462         p_sys->i_offsets_length = 0;
 463     }
 464     var_Destroy( p_libvlc_global, CFG_PREFIX "offsets" );
 465     var_Destroy( p_libvlc_global, CFG_PREFIX "alpha" );
 466     var_Destroy( p_libvlc_global, CFG_PREFIX "height" );
 467     var_Destroy( p_libvlc_global, CFG_PREFIX "align" );
 468     var_Destroy( p_libvlc_global, CFG_PREFIX "width" );
 469     var_Destroy( p_libvlc_global, CFG_PREFIX "xoffset" );
 470     var_Destroy( p_libvlc_global, CFG_PREFIX "yoffset" );
 471     var_Destroy( p_libvlc_global, CFG_PREFIX "vborder" );
 472     var_Destroy( p_libvlc_global, CFG_PREFIX "hborder" );
 473     var_Destroy( p_libvlc_global, CFG_PREFIX "position" );
 474     var_Destroy( p_libvlc_global, CFG_PREFIX "rows" );
 475     var_Destroy( p_libvlc_global, CFG_PREFIX "cols" );
 476     var_Destroy( p_libvlc_global, CFG_PREFIX "keep-aspect-ratio" );
 477
 478     var_Destroy( p_libvlc_global, CFG_PREFIX "bsu" );
 479     var_Destroy( p_libvlc_global, CFG_PREFIX "bsv" );
 480     var_Destroy( p_libvlc_global, CFG_PREFIX "bsut" );
 481     var_Destroy( p_libvlc_global, CFG_PREFIX "bsvt" );
 482     var_Destroy( p_libvlc_global, CFG_PREFIX "bs" );
 483
 484     if( p_sys->p_pic ) p_sys->p_pic->pf_release( p_sys->p_pic );
 485     vlc_mutex_unlock( &p_sys->lock );
 486     vlc_mutex_destroy( &p_sys->lock );
 487     free( p_sys );
 488 }
 489
 490 /*****************************************************************************
 491  * MosaicReleasePicture : Hack to avoid picture duplication
 492  *****************************************************************************/
 493 static void MosaicReleasePicture( picture_t *p_picture )
 494 {
 495     picture_t *p_original_pic = (picture_t *)p_picture->p_sys;
 496
 497     p_original_pic->pf_release( p_original_pic );
 498 }
 499
 500 /*****************************************************************************
 501  * Filter
 502  *****************************************************************************/
 503 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
 504 {
 505     filter_sys_t *p_sys = p_filter->p_sys;
 506     bridge_t *p_bridge;
 507
 508     subpicture_t *p_spu;
 509
 510     int i_index, i_real_index, i_row, i_col;
 511     int i_greatest_real_index_used = p_sys->i_order_length - 1;
 512
 513     unsigned int col_inner_width, row_inner_height;
 514
 515     subpicture_region_t *p_region;
 516     subpicture_region_t *p_region_prev = NULL;
 517
 518     /* Allocate the subpicture internal data. */
 519     p_spu = p_filter->pf_sub_buffer_new( p_filter );
 520     if( !p_spu )
 521     {
 522         return NULL;
 523     }
 524
 525     /* Initialize subpicture */
 526     p_spu->i_channel = 0;
 527     p_spu->i_start  = date;
 528     p_spu->i_stop = 0;
 529     p_spu->b_ephemer = VLC_TRUE;
 530     p_spu->i_alpha = p_sys->i_alpha;
 531     p_spu->i_flags = p_sys->i_align;
 532     p_spu->b_absolute = VLC_FALSE;
 533
 534     vlc_mutex_lock( &p_sys->lock );
 535     vlc_mutex_lock( p_sys->p_lock );
 536
 537     p_bridge = GetBridge( p_filter );
 538     if ( p_bridge == NULL )
 539     {
 540         vlc_mutex_unlock( p_sys->p_lock );
 541         vlc_mutex_unlock( &p_sys->lock );
 542         return p_spu;
 543     }
 544
 545     if ( p_sys->i_position == 2 ) /* user-defined offsets for positioning */
 546     {
 547         /* If we have either too much or not enough offsets, fall-back
 548          * to automatic positioning. */
 549         if ( p_sys->i_offsets_length != p_sys->i_order_length )
 550         {
 551             msg_Err( p_filter, "Number of specified offsets (%d) does not match number of input substreams in mosaic-order (%d), falling back to mosaic-position=0", p_sys->i_offsets_length, p_sys->i_order_length );
 552             p_sys->i_position = 0;
 553         }
 554     }
 555
 556     if ( p_sys->i_position == 0 ) /* use automatic positioning */
 557     {
 558         int i_numpics = p_sys->i_order_length; /* keep slots and all */
 559         for ( i_index = 0; i_index < p_bridge->i_es_num; i_index++ )
 560         {
 561             bridged_es_t *p_es = p_bridge->pp_es[i_index];
 562             if ( !p_es->b_empty )
 563             {
 564                 i_numpics ++;
 565                 if( p_sys->i_order_length && p_es->psz_id != 0 )
 566                 {
 567                     /* We also want to leave slots for images given in
 568                      * mosaic-order that are not available in p_vout_picture */
 569                     int i;
 570                     for( i = 0; i < p_sys->i_order_length ; i++ )
 571                     {
 572                         if( !strcmp( p_sys->ppsz_order[i], p_es->psz_id ) )
 573                         {
 574                             i_numpics--;
 575                             break;
 576                         }
 577                     }
 578
 579                 }
 580             }
 581         }
 582         p_sys->i_rows = ceil(sqrt( (double)i_numpics ));
 583         p_sys->i_cols = ( i_numpics % p_sys->i_rows == 0 ?
 584                             i_numpics / p_sys->i_rows :
 585                             i_numpics / p_sys->i_rows + 1 );
 586     }
 587
 588     col_inner_width  = ( ( p_sys->i_width - ( p_sys->i_cols - 1 )
 589                        * p_sys->i_borderw ) / p_sys->i_cols );
 590     row_inner_height = ( ( p_sys->i_height - ( p_sys->i_rows - 1 )
 591                        * p_sys->i_borderh ) / p_sys->i_rows );
 592
 593     i_real_index = 0;
 594
 595     for ( i_index = 0; i_index < p_bridge->i_es_num; i_index++ )
 596     {
 597         bridged_es_t *p_es = p_bridge->pp_es[i_index];
 598         video_format_t fmt_in, fmt_out;
 599         picture_t *p_converted;
 600
 601         memset( &fmt_in, 0, sizeof( video_format_t ) );
 602         memset( &fmt_out, 0, sizeof( video_format_t ) );
 603
 604         if ( p_es->b_empty )
 605             continue;
 606
 607         while ( p_es->p_picture != NULL
 608                  && p_es->p_picture->date + p_sys->i_delay < date )
 609         {
 610             if ( p_es->p_picture->p_next != NULL )
 611             {
 612                 picture_t *p_next = p_es->p_picture->p_next;
 613                 p_es->p_picture->pf_release( p_es->p_picture );
 614                 p_es->p_picture = p_next;
 615             }
 616             else if ( p_es->p_picture->date + p_sys->i_delay + BLANK_DELAY <
 617                         date )
 618             {
 619                 /* Display blank */
 620                 p_es->p_picture->pf_release( p_es->p_picture );
 621                 p_es->p_picture = NULL;
 622                 p_es->pp_last = &p_es->p_picture;
 623                 break;
 624             }
 625             else
 626             {
 627                 msg_Dbg( p_filter, "too late picture for %s (" I64Fd ")",
 628                          p_es->psz_id,
 629                          date - p_es->p_picture->date - p_sys->i_delay );
 630                 break;
 631             }
 632         }
 633
 634         if ( p_es->p_picture == NULL )
 635             continue;
 636
 637         if ( p_sys->i_order_length == 0 )
 638         {
 639             i_real_index++;
 640         }
 641         else
 642         {
 643             int i;
 644             for ( i = 0; i <= p_sys->i_order_length; i++ )
 645             {
 646                 if ( i == p_sys->i_order_length ) break;
 647                 if ( strcmp( p_es->psz_id, p_sys->ppsz_order[i] ) == 0 )
 648                 {
 649                     i_real_index = i;
 650                     break;
 651                 }
 652             }
 653             if ( i == p_sys->i_order_length )
 654                 i_real_index = ++i_greatest_real_index_used;
 655         }
 656         i_row = ( i_real_index / p_sys->i_cols ) % p_sys->i_rows;
 657         i_col = i_real_index % p_sys->i_cols ;
 658
 659         if ( !p_sys->b_keep )
 660         {
 661             /* Convert the images */
 662             fmt_in.i_chroma = p_es->p_picture->format.i_chroma;
 663             fmt_in.i_height = p_es->p_picture->format.i_height;
 664             fmt_in.i_width = p_es->p_picture->format.i_width;
 665
 666             if( p_sys->b_bs )
 667                 fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 668             else
 669                 fmt_out.i_chroma = VLC_FOURCC('I','4','2','0');
 670             fmt_out.i_width = col_inner_width;
 671             fmt_out.i_height = row_inner_height;
 672
 673             if( p_sys->b_ar ) /* keep aspect ratio */
 674             {
 675                 if( (float)fmt_out.i_width / (float)fmt_out.i_height
 676                       > (float)fmt_in.i_width / (float)fmt_in.i_height )
 677                 {
 678                     fmt_out.i_width = ( fmt_out.i_height * fmt_in.i_width )
 679                                          / fmt_in.i_height;
 680                 }
 681                 else
 682                 {
 683                     fmt_out.i_height = ( fmt_out.i_width * fmt_in.i_height )
 684                                         / fmt_in.i_width;
 685                 }
 686              }
 687
 688             fmt_out.i_visible_width = fmt_out.i_width;
 689             fmt_out.i_visible_height = fmt_out.i_height;
 690
 691             p_converted = image_Convert( p_sys->p_image, p_es->p_picture,
 692                                          &fmt_in, &fmt_out );
 693             if( !p_converted )
 694             {
 695                 msg_Warn( p_filter,
 696                            "image resizing and chroma conversion failed" );
 697                 continue;
 698             }
 699
 700             /* Bluescreen stuff */
 701             if( p_sys->b_bs )
 702             {
 703                 int i,j;
 704                 int i_lines = p_converted->p[ A_PLANE ].i_lines;
 705                 int i_pitch = p_converted->p[ A_PLANE ].i_pitch;
 706                 uint8_t *p_a = p_converted->p[ A_PLANE ].p_pixels;
 707                 uint8_t *p_at = malloc( i_lines * i_pitch * sizeof( uint8_t ) );
 708                 uint8_t *p_u = p_converted->p[ U_PLANE ].p_pixels;
 709                 uint8_t *p_v = p_converted->p[ V_PLANE ].p_pixels;
 710                 uint8_t umin, umax, vmin, vmax;
 711                 umin = p_sys->i_bsu - p_sys->i_bsut >= 0x00 ?
 712                        p_sys->i_bsu - p_sys->i_bsut : 0x00;
 713                 umax = p_sys->i_bsu + p_sys->i_bsut <= 0xff ?
 714                        p_sys->i_bsu + p_sys->i_bsut : 0xff;
 715                 vmin = p_sys->i_bsv - p_sys->i_bsvt >= 0x00 ?
 716                        p_sys->i_bsv - p_sys->i_bsvt : 0x00;
 717                 vmax = p_sys->i_bsv + p_sys->i_bsvt <= 0xff ?
 718                        p_sys->i_bsv + p_sys->i_bsvt : 0xff;
 719
 720                 for( i = 0; i < i_lines*i_pitch; i++ )
 721                 {
 722                     if(    p_u[i] < umax
 723                         && p_u[i] > umin
 724                         && p_v[i] < vmax
 725                         && p_v[i] > vmin )
 726                     {
 727                         p_at[i] = 0x00;
 728                     }
 729                     else
 730                     {
 731                         p_at[i] = 0xff;
 732                     }
 733                 }
 734                 /* Gaussian convolution to make it look cleaner */
 735                 p_filter->p_libvlc->pf_memset( p_a, 0, 2 * i_pitch );
 736                 for( i = 2; i < i_lines - 2; i++ )
 737                 {
 738                     p_a[i*i_pitch] = 0x00;
 739                     p_a[i*i_pitch+1] = 0x00;
 740                     for( j = 2; j < i_pitch - 2; j ++ )
 741                     {
 742                         p_a[i*i_pitch+j] = (uint8_t)((
 743                           /* 2 rows up */
 744                             ( p_at[(i-2)*i_pitch+j-2]<<1 )
 745                           + ( p_at[(i-2)*i_pitch+j-1]<<2 )
 746                           + ( p_at[(i-2)*i_pitch+j]<<2 )
 747                           + ( p_at[(i-2)*i_pitch+j+1]<<2 )
 748                           + ( p_at[(i-2)*i_pitch+j+2]<<1 )
 749                           /* 1 row up */
 750                           + ( p_at[(i-1)*i_pitch+j-1]<<3 )
 751                           + ( p_at[(i-1)*i_pitch+j-2]<<2 )
 752                           + ( p_at[(i-1)*i_pitch+j]*12 )
 753                           + ( p_at[(i-1)*i_pitch+j+1]<<3 )
 754                           + ( p_at[(i-1)*i_pitch+j+2]<<2 )
 755                           /* */
 756                           + ( p_at[i*i_pitch+j-2]<<2 )
 757                           + ( p_at[i*i_pitch+j-1]*12 )
 758                           + ( p_at[i*i_pitch+j]<<4 )
 759                           + ( p_at[i*i_pitch+j+1]*12 )
 760                           + ( p_at[i*i_pitch+j+2]<<2 )
 761                           /* 1 row down */
 762                           + ( p_at[(i+1)*i_pitch+j-2]<<2 )
 763                           + ( p_at[(i+1)*i_pitch+j-1]<<3 )
 764                           + ( p_at[(i+1)*i_pitch+j]*12 )
 765                           + ( p_at[(i+1)*i_pitch+j+1]<<3 )
 766                           + ( p_at[(i+1)*i_pitch+j+2]<<2 )
 767                           /* 2 rows down */
 768                           + ( p_at[(i+2)*i_pitch+j-2]<<1 )
 769                           + ( p_at[(i+2)*i_pitch+j-1]<<2 )
 770                           + ( p_at[(i+2)*i_pitch+j]<<2 )
 771                           + ( p_at[(i+2)*i_pitch+j+1]<<2 )
 772                           + ( p_at[(i+2)*i_pitch+j+2]<<1 )
 773                           )/152);
 774                           if( p_a[i*i_pitch+j] < 0xbf ) p_a[i*i_pitch+j] = 0x00;
 775                     }
 776                 }
 777                 free( p_at );
 778             }
 779         }
 780         else
 781         {
 782             p_converted = p_es->p_picture;
 783             p_converted->i_refcount++;
 784             fmt_in.i_width = fmt_out.i_width = p_converted->format.i_width;
 785             fmt_in.i_height = fmt_out.i_height = p_converted->format.i_height;
 786             fmt_in.i_chroma = fmt_out.i_chroma = p_converted->format.i_chroma;
 787             fmt_out.i_visible_width = fmt_out.i_width;
 788             fmt_out.i_visible_height = fmt_out.i_height;
 789         }
 790
 791         p_region = p_spu->pf_make_region( VLC_OBJECT(p_filter), &fmt_out,
 792                                           p_converted );
 793         if( !p_region )
 794         {
 795             msg_Err( p_filter, "cannot allocate SPU region" );
 796             p_filter->pf_sub_buffer_del( p_filter, p_spu );
 797             vlc_mutex_unlock( &p_sys->lock );
 798             vlc_mutex_unlock( p_sys->p_lock );
 799             return p_spu;
 800         }
 801
 802         /* HACK ALERT : let's fix the pointers to avoid picture duplication.
 803          * This is necessary because p_region->picture is not a pointer
 804          * as it ought to be. */
 805         if( !p_sys->b_keep )
 806         {
 807             free( p_converted );
 808         }
 809         else
 810         {
 811             /* Keep a pointer to the original picture (and its refcount...). */
 812             p_region->picture.p_sys = (picture_sys_t *)p_converted;
 813             p_region->picture.pf_release = MosaicReleasePicture;
 814         }
 815
 816         if( p_sys->i_position == 2 ) /* user-defined offset */
 817         {
 818             p_region->i_x = p_sys->pi_x_offsets[i_real_index];
 819         }
 820         else if( fmt_out.i_width > col_inner_width ||
 821             p_sys->b_ar || p_sys->b_keep )
 822         {
 823             /* we don't have to center the video since it takes the
 824             whole rectangle area or it's larger than the rectangle */
 825             p_region->i_x = p_sys->i_xoffset
 826                         + i_col * ( p_sys->i_width / p_sys->i_cols )
 827                         + ( i_col * p_sys->i_borderw ) / p_sys->i_cols;
 828         }
 829         else
 830         {
 831             /* center the video in the dedicated rectangle */
 832             p_region->i_x = p_sys->i_xoffset
 833                     + i_col * ( p_sys->i_width / p_sys->i_cols )
 834                     + ( i_col * p_sys->i_borderw ) / p_sys->i_cols
 835                     + ( col_inner_width - fmt_out.i_width ) / 2;
 836         }
 837
 838         if( p_sys->i_position == 2 ) /* user-defined offset */
 839         {
 840             p_region->i_y = p_sys->pi_y_offsets[i_real_index];
 841         }
 842         else if( fmt_out.i_height < row_inner_height
 843             || p_sys->b_ar || p_sys->b_keep )
 844         {
 845             /* we don't have to center the video since it takes the
 846             whole rectangle area or it's taller than the rectangle */
 847             p_region->i_y = p_sys->i_yoffset
 848                     + i_row * ( p_sys->i_height / p_sys->i_rows )
 849                     + ( i_row * p_sys->i_borderh ) / p_sys->i_rows;
 850         }
 851         else
 852         {
 853             /* center the video in the dedicated rectangle */
 854             p_region->i_y = p_sys->i_yoffset
 855                     + i_row * ( p_sys->i_height / p_sys->i_rows )
 856                     + ( i_row * p_sys->i_borderh ) / p_sys->i_rows
 857                     + ( row_inner_height - fmt_out.i_height ) / 2;
 858         }
 859
 860         if( p_region_prev == NULL )
 861         {
 862             p_spu->p_region = p_region;
 863         }
 864         else
 865         {
 866             p_region_prev->p_next = p_region;
 867         }
 868
 869         p_region_prev = p_region;
 870     }
 871
 872     vlc_mutex_unlock( p_sys->p_lock );
 873     vlc_mutex_unlock( &p_sys->lock );
 874
 875     return p_spu;
 876 }
 877
 878 /*****************************************************************************
 879 * Callback to update params on the fly
 880 *****************************************************************************/
 881 static int MosaicCallback( vlc_object_t *p_this, char const *psz_var,
 882                             vlc_value_t oldval, vlc_value_t newval,
 883                             void *p_data )
 884 {
 885     filter_sys_t *p_sys = (filter_sys_t *) p_data;
 886
 887 #define VAR_IS( a ) !strcmp( psz_var, CFG_PREFIX a )
 888     if( VAR_IS( "alpha" ) )
 889     {
 890         vlc_mutex_lock( &p_sys->lock );
 891         msg_Dbg( p_this, "changing alpha from %d/255 to %d/255",
 892                          p_sys->i_alpha, newval.i_int);
 893         p_sys->i_alpha = __MIN( __MAX( newval.i_int, 0 ), 255 );
 894         vlc_mutex_unlock( &p_sys->lock );
 895     }
 896     else if( VAR_IS( "height" ) )
 897     {
 898         vlc_mutex_lock( &p_sys->lock );
 899         msg_Dbg( p_this, "changing height from %dpx to %dpx",
 900                           p_sys->i_height, newval.i_int );
 901         p_sys->i_height = __MAX( newval.i_int, 0 );
 902         vlc_mutex_unlock( &p_sys->lock );
 903     }
 904     else if( VAR_IS( "width" ) )
 905     {
 906         vlc_mutex_lock( &p_sys->lock );
 907         msg_Dbg( p_this, "changing width from %dpx to %dpx",
 908                          p_sys->i_width, newval.i_int );
 909         p_sys->i_width = __MAX( newval.i_int, 0 );
 910         vlc_mutex_unlock( &p_sys->lock );
 911     }
 912     else if( VAR_IS( "xoffset" ) )
 913     {
 914         vlc_mutex_lock( &p_sys->lock );
 915         msg_Dbg( p_this, "changing x offset from %dpx to %dpx",
 916                          p_sys->i_xoffset, newval.i_int );
 917         p_sys->i_xoffset = __MAX( newval.i_int, 0 );
 918         vlc_mutex_unlock( &p_sys->lock );
 919     }
 920     else if( VAR_IS( "yoffset" ) )
 921     {
 922         vlc_mutex_lock( &p_sys->lock );
 923         msg_Dbg( p_this, "changing y offset from %dpx to %dpx",
 924                          p_sys->i_yoffset, newval.i_int );
 925         p_sys->i_yoffset = __MAX( newval.i_int, 0 );
 926         vlc_mutex_unlock( &p_sys->lock );
 927     }
 928     else if( VAR_IS( "align" ) )
 929     {
 930         int i_old = 0, i_new = 0;
 931         vlc_mutex_lock( &p_sys->lock );
 932         newval.i_int = __MIN( __MAX( newval.i_int, 0 ), 10 );
 933         if( newval.i_int == 3 || newval.i_int == 7 )
 934             newval.i_int = 5;
 935         while( pi_align_values[i_old] != p_sys->i_align ) i_old++;
 936         while( pi_align_values[i_new] != newval.i_int ) i_new++;
 937         msg_Dbg( p_this, "changing alignment from %d (%s) to %d (%s)",
 938                      p_sys->i_align, ppsz_align_descriptions[i_old],
 939                      newval.i_int, ppsz_align_descriptions[i_new] );
 940         p_sys->i_align = newval.i_int;
 941         vlc_mutex_unlock( &p_sys->lock );
 942     }
 943     else if( VAR_IS( "borderw" ) )
 944     {
 945         vlc_mutex_lock( &p_sys->lock );
 946         msg_Dbg( p_this, "changing border width from %dpx to %dpx",
 947                          p_sys->i_borderw, newval.i_int );
 948         p_sys->i_borderw = __MAX( newval.i_int, 0 );
 949         vlc_mutex_unlock( &p_sys->lock );
 950     }
 951     else if( VAR_IS( "borderh" ) )
 952     {
 953         vlc_mutex_lock( &p_sys->lock );
 954         msg_Dbg( p_this, "changing border height from %dpx to %dpx",
 955                          p_sys->i_borderh, newval.i_int );
 956         p_sys->i_borderh = __MAX( newval.i_int, 0 );
 957         vlc_mutex_unlock( &p_sys->lock );
 958     }
 959     else if( VAR_IS( "position" ) )
 960     {
 961         if( newval.i_int > 1 || newval.i_int < 0 )
 962         {
 963             msg_Err( p_this, "Position is either 0 (auto) or 1 (fixed)" );
 964         }
 965         else
 966         {
 967             vlc_mutex_lock( &p_sys->lock );
 968             msg_Dbg( p_this, "changing position method from %d (%s) to %d (%s)",
 969                     p_sys->i_position, ppsz_pos_descriptions[p_sys->i_position],
 970                     newval.i_int, ppsz_pos_descriptions[newval.i_int]);
 971             p_sys->i_position = newval.i_int;
 972             vlc_mutex_unlock( &p_sys->lock );
 973         }
 974     }
 975     else if( VAR_IS( "rows" ) )
 976     {
 977         vlc_mutex_lock( &p_sys->lock );
 978         msg_Dbg( p_this, "changing number of rows from %d to %d",
 979                          p_sys->i_rows, newval.i_int );
 980         p_sys->i_rows = __MAX( newval.i_int, 1 );
 981         vlc_mutex_unlock( &p_sys->lock );
 982     }
 983     else if( VAR_IS( "cols" ) )
 984     {
 985         vlc_mutex_lock( &p_sys->lock );
 986         msg_Dbg( p_this, "changing number of columns from %d to %d",
 987                          p_sys->i_cols, newval.i_int );
 988         p_sys->i_cols = __MAX( newval.i_int, 1 );
 989         vlc_mutex_unlock( &p_sys->lock );
 990     }
 991     else if( VAR_IS( "order" ) )
 992     {
 993         char *psz_order;
 994         int i_index;
 995         vlc_mutex_lock( &p_sys->lock );
 996         msg_Dbg( p_this, "Changing mosaic order to %s", newval.psz_string );
 997
 998         p_sys->i_order_length = 0;
 999         p_sys->ppsz_order = NULL;
1000         psz_order = newval.psz_string;
1001
1002         while( p_sys->i_order_length-- )
1003         {
1004 #if 0
1005             printf("%d\n", p_sys->ppsz_order);
1006 #endif
1007             free( p_sys->ppsz_order );
1008         }
1009         if( psz_order[0] != 0 )
1010         {
1011             char *psz_end = NULL;
1012             i_index = 0;
1013             do
1014             {
1015                 psz_end = strchr( psz_order, ',' );
1016                 i_index++;
1017                 p_sys->ppsz_order = realloc( p_sys->ppsz_order,
1018                                     i_index * sizeof(char *) );
1019                 p_sys->ppsz_order[i_index - 1] = strndup( psz_order,
1020                                            psz_end - psz_order );
1021                 psz_order = psz_end+1;
1022             } while( NULL !=  psz_end );
1023             p_sys->i_order_length = i_index;
1024         }
1025
1026         vlc_mutex_unlock( &p_sys->lock );
1027     }
1028     else if( VAR_IS( "offsets" ) )
1029     {
1030         vlc_mutex_lock( &p_sys->lock );
1031         msg_Info( p_this, "Changing mosaic-offsets to %s", newval.psz_string );
1032
1033         if( p_sys->i_offsets_length != 0 )
1034         {
1035             free( p_sys->pi_x_offsets );
1036             free( p_sys->pi_y_offsets );
1037         }
1038         p_sys->i_offsets_length = 0;
1039
1040         mosaic_ParseSetOffsets( (vlc_object_t *) p_this, p_sys, newval.psz_string );
1041
1042         vlc_mutex_unlock( &p_sys->lock );
1043     }
1044     else if( VAR_IS( "keep-aspect-ratio" ) )
1045     {
1046         vlc_mutex_lock( &p_sys->lock );
1047         if( newval.i_int )
1048         {
1049             msg_Dbg( p_this, "keeping aspect ratio" );
1050             p_sys->b_ar = 1;
1051         }
1052         else
1053         {
1054             msg_Dbg( p_this, "won't keep aspect ratio" );
1055             p_sys->b_ar = 0;
1056         }
1057         vlc_mutex_unlock( &p_sys->lock );
1058     }
1059     else if( VAR_IS( "bs" ) )
1060     {
1061         vlc_mutex_lock( &p_sys->lock );
1062         p_sys->b_bs = newval.b_bool;
1063         vlc_mutex_unlock( &p_sys->lock );
1064     }
1065     else if( VAR_IS( "bsu" ) )
1066     {
1067         vlc_mutex_lock( &p_sys->lock );
1068         p_sys->i_bsu = __MAX( 0, __MIN( 255, newval.i_int ) );
1069         vlc_mutex_unlock( &p_sys->lock );
1070     }
1071     else if( VAR_IS( "bsv" ) )
1072     {
1073         vlc_mutex_lock( &p_sys->lock );
1074         p_sys->i_bsv = __MAX( 0, __MIN( 255, newval.i_int ) );
1075         vlc_mutex_unlock( &p_sys->lock );
1076     }
1077     else if( VAR_IS( "bsut" ) )
1078     {
1079         vlc_mutex_lock( &p_sys->lock );
1080         p_sys->i_bsut = __MAX( 0, __MIN( 255, newval.i_int ) );
1081         vlc_mutex_unlock( &p_sys->lock );
1082     }
1083     else if( VAR_IS( "bsvt" ) )
1084     {
1085         vlc_mutex_lock( &p_sys->lock );
1086         p_sys->i_bsvt = __MAX( 0, __MIN( 255, newval.i_int ) );
1087         vlc_mutex_unlock( &p_sys->lock );
1088     }
1089     return VLC_SUCCESS;
1090 }