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

   1 /*****************************************************************************
   2  * adjust.c : Contrast/Hue/Saturation/Brightness video plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2000-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Simon Latapie <garf@via.ecp.fr>
   8  *          Antoine Cellerier <dionoea -at- videolan d0t org>
   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
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <math.h>
  34
  35 #include <vlc_common.h>
  36 #include <vlc_plugin.h>
  37 #include <vlc_sout.h>
  38
  39 #include <vlc_filter.h>
  40 #include "filter_picture.h"
  41
  42 #ifndef M_PI
  43 #   define M_PI 3.14159265358979323846
  44 #endif
  45
  46 #define eight_times( x )    x x x x x x x x
  47
  48 /*****************************************************************************
  49  * Local prototypes
  50  *****************************************************************************/
  51 static int  Create    ( vlc_object_t * );
  52 static void Destroy   ( vlc_object_t * );
  53
  54 static picture_t *FilterPlanar( filter_t *, picture_t * );
  55 static picture_t *FilterPacked( filter_t *, picture_t * );
  56 static int AdjustCallback( vlc_object_t *p_this, char const *psz_var,
  57                            vlc_value_t oldval, vlc_value_t newval,
  58                            void *p_data );
  59
  60 /*****************************************************************************
  61  * Module descriptor
  62  *****************************************************************************/
  63
  64 #define THRES_TEXT N_("Brightness threshold")
  65 #define THRES_LONGTEXT N_("When this mode is enabled, pixels will be " \
  66         "shown as black or white. The threshold value will be the brightness " \
  67         "defined below." )
  68 #define CONT_TEXT N_("Image contrast (0-2)")
  69 #define CONT_LONGTEXT N_("Set the image contrast, between 0 and 2. Defaults to 1.")
  70 #define HUE_TEXT N_("Image hue (0-360)")
  71 #define HUE_LONGTEXT N_("Set the image hue, between 0 and 360. Defaults to 0.")
  72 #define SAT_TEXT N_("Image saturation (0-3)")
  73 #define SAT_LONGTEXT N_("Set the image saturation, between 0 and 3. Defaults to 1.")
  74 #define LUM_TEXT N_("Image brightness (0-2)")
  75 #define LUM_LONGTEXT N_("Set the image brightness, between 0 and 2. Defaults to 1.")
  76 #define GAMMA_TEXT N_("Image gamma (0-10)")
  77 #define GAMMA_LONGTEXT N_("Set the image gamma, between 0.01 and 10. Defaults to 1.")
  78
  79 vlc_module_begin ()
  80     set_description( N_("Image properties filter") )
  81     set_shortname( N_("Image adjust" ))
  82     set_category( CAT_VIDEO )
  83     set_subcategory( SUBCAT_VIDEO_VFILTER )
  84     set_capability( "video filter2", 0 )
  85
  86     add_float_with_range( "contrast", 1.0, 0.0, 2.0,
  87                           CONT_TEXT, CONT_LONGTEXT, false )
  88     add_float_with_range( "brightness", 1.0, 0.0, 2.0,
  89                            LUM_TEXT, LUM_LONGTEXT, false )
  90     add_integer_with_range( "hue", 0, 0, 360,
  91                             HUE_TEXT, HUE_LONGTEXT, false )
  92     add_float_with_range( "saturation", 1.0, 0.0, 3.0,
  93                           SAT_TEXT, SAT_LONGTEXT, false )
  94     add_float_with_range( "gamma", 1.0, 0.01, 10.0,
  95                           GAMMA_TEXT, GAMMA_LONGTEXT, false )
  96
  97     add_bool( "brightness-threshold", false,
  98               THRES_TEXT, THRES_LONGTEXT, false )
  99
 100     add_shortcut( "adjust" )
 101     set_callbacks( Create, Destroy )
 102 vlc_module_end ()
 103
 104 static const char *const ppsz_filter_options[] = {
 105     "contrast", "brightness", "hue", "saturation", "gamma",
 106     "brightness-threshold", NULL
 107 };
 108
 109 /*****************************************************************************
 110  * filter_sys_t: adjust filter method descriptor
 111  *****************************************************************************/
 112 struct filter_sys_t
 113 {
 114     vlc_mutex_t lock;
 115     double     f_contrast;
 116     double     f_brightness;
 117     int        i_hue;
 118     double     f_saturation;
 119     double     f_gamma;
 120     bool b_brightness_threshold;
 121 };
 122
 123 /*****************************************************************************
 124  * Create: allocates adjust video filter
 125  *****************************************************************************/
 126 static int Create( vlc_object_t *p_this )
 127 {
 128     filter_t *p_filter = (filter_t *)p_this;
 129     filter_sys_t *p_sys;
 130
 131     switch( p_filter->fmt_in.video.i_chroma )
 132     {
 133         CASE_PLANAR_YUV
 134             /* Planar YUV */
 135             p_filter->pf_video_filter = FilterPlanar;
 136             break;
 137
 138         CASE_PACKED_YUV_422
 139             /* Packed YUV 4:2:2 */
 140             p_filter->pf_video_filter = FilterPacked;
 141             break;
 142
 143         default:
 144             msg_Err( p_filter, "Unsupported input chroma (%4.4s)",
 145                      (char*)&(p_filter->fmt_in.video.i_chroma) );
 146             return VLC_EGENERIC;
 147     }
 148
 149     if( p_filter->fmt_in.video.i_chroma != p_filter->fmt_out.video.i_chroma )
 150     {
 151         msg_Err( p_filter, "Input and output chromas don't match" );
 152         return VLC_EGENERIC;
 153     }
 154
 155     /* Allocate structure */
 156     p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 157     if( p_filter->p_sys == NULL )
 158         return VLC_ENOMEM;
 159     p_sys = p_filter->p_sys;
 160
 161     /* needed to get options passed in transcode using the
 162      * adjust{name=value} syntax */
 163     config_ChainParse( p_filter, "", ppsz_filter_options,
 164                    p_filter->p_cfg );
 165
 166     p_sys->f_contrast = var_CreateGetFloatCommand( p_filter, "contrast" );
 167     p_sys->f_brightness = var_CreateGetFloatCommand( p_filter, "brightness" );
 168     p_sys->i_hue = var_CreateGetIntegerCommand( p_filter, "hue" );
 169     p_sys->f_saturation = var_CreateGetFloatCommand( p_filter, "saturation" );
 170     p_sys->f_gamma = var_CreateGetFloatCommand( p_filter, "gamma" );
 171     p_sys->b_brightness_threshold =
 172         var_CreateGetBoolCommand( p_filter, "brightness-threshold" );
 173
 174     vlc_mutex_init( &p_sys->lock );
 175     var_AddCallback( p_filter, "contrast",   AdjustCallback, p_sys );
 176     var_AddCallback( p_filter, "brightness", AdjustCallback, p_sys );
 177     var_AddCallback( p_filter, "hue",        AdjustCallback, p_sys );
 178     var_AddCallback( p_filter, "saturation", AdjustCallback, p_sys );
 179     var_AddCallback( p_filter, "gamma",      AdjustCallback, p_sys );
 180     var_AddCallback( p_filter, "brightness-threshold",
 181                                              AdjustCallback, p_sys );
 182
 183     return VLC_SUCCESS;
 184 }
 185
 186 /*****************************************************************************
 187  * Destroy: destroy adjust video filter
 188  *****************************************************************************/
 189 static void Destroy( vlc_object_t *p_this )
 190 {
 191     filter_t *p_filter = (filter_t *)p_this;
 192     filter_sys_t *p_sys = p_filter->p_sys;
 193
 194     var_DelCallback( p_filter, "contrast",   AdjustCallback, p_sys );
 195     var_DelCallback( p_filter, "brightness", AdjustCallback, p_sys );
 196     var_DelCallback( p_filter, "hue",        AdjustCallback, p_sys );
 197     var_DelCallback( p_filter, "saturation", AdjustCallback, p_sys );
 198     var_DelCallback( p_filter, "gamma",      AdjustCallback, p_sys );
 199     var_DelCallback( p_filter, "brightness-threshold",
 200                                              AdjustCallback, p_sys );
 201
 202     vlc_mutex_destroy( &p_sys->lock );
 203     free( p_sys );
 204 }
 205
 206 /*****************************************************************************
 207  * Run the filter on a Planar YUV picture
 208  *****************************************************************************/
 209 static picture_t *FilterPlanar( filter_t *p_filter, picture_t *p_pic )
 210 {
 211     int pi_luma[256];
 212     int pi_gamma[256];
 213
 214     picture_t *p_outpic;
 215     uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
 216     uint8_t *p_out, *p_out_v;
 217
 218     bool b_thres;
 219     double  f_hue;
 220     double  f_gamma;
 221     int32_t i_cont, i_lum;
 222     int i_sat, i_sin, i_cos, i_x, i_y;
 223     int i;
 224
 225     filter_sys_t *p_sys = p_filter->p_sys;
 226
 227     if( !p_pic ) return NULL;
 228
 229     p_outpic = filter_NewPicture( p_filter );
 230     if( !p_outpic )
 231     {
 232         picture_Release( p_pic );
 233         return NULL;
 234     }
 235
 236     /* Get variables */
 237     vlc_mutex_lock( &p_sys->lock );
 238     i_cont = (int)( p_sys->f_contrast * 255 );
 239     i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
 240     f_hue = (float)( p_sys->i_hue * M_PI / 180 );
 241     i_sat = (int)( p_sys->f_saturation * 256 );
 242     f_gamma = 1.0 / p_sys->f_gamma;
 243     b_thres = p_sys->b_brightness_threshold;
 244     vlc_mutex_unlock( &p_sys->lock );
 245
 246     /*
 247      * Threshold mode drops out everything about luma, contrast and gamma.
 248      */
 249     if( !b_thres )
 250     {
 251
 252         /* Contrast is a fast but kludged function, so I put this gap to be
 253          * cleaner :) */
 254         i_lum += 128 - i_cont / 2;
 255
 256         /* Fill the gamma lookup table */
 257         for( i = 0 ; i < 256 ; i++ )
 258         {
 259             pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
 260         }
 261
 262         /* Fill the luma lookup table */
 263         for( i = 0 ; i < 256 ; i++ )
 264         {
 265             pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
 266         }
 267     }
 268     else
 269     {
 270         /*
 271          * We get luma as threshold value: the higher it is, the darker is
 272          * the image. Should I reverse this?
 273          */
 274         for( i = 0 ; i < 256 ; i++ )
 275         {
 276             pi_luma[ i ] = (i < i_lum) ? 0 : 255;
 277         }
 278
 279         /*
 280          * Desaturates image to avoid that strange yellow halo...
 281          */
 282         i_sat = 0;
 283     }
 284
 285     /*
 286      * Do the Y plane
 287      */
 288
 289     p_in = p_pic->p[Y_PLANE].p_pixels;
 290     p_in_end = p_in + p_pic->p[Y_PLANE].i_visible_lines
 291                       * p_pic->p[Y_PLANE].i_pitch - 8;
 292
 293     p_out = p_outpic->p[Y_PLANE].p_pixels;
 294
 295     for( ; p_in < p_in_end ; )
 296     {
 297         p_line_end = p_in + p_pic->p[Y_PLANE].i_visible_pitch - 8;
 298
 299         for( ; p_in < p_line_end ; )
 300         {
 301             /* Do 8 pixels at a time */
 302             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 303             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 304             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 305             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 306         }
 307
 308         p_line_end += 8;
 309
 310         for( ; p_in < p_line_end ; )
 311         {
 312             *p_out++ = pi_luma[ *p_in++ ];
 313         }
 314
 315         p_in += p_pic->p[Y_PLANE].i_pitch
 316               - p_pic->p[Y_PLANE].i_visible_pitch;
 317         p_out += p_outpic->p[Y_PLANE].i_pitch
 318                - p_outpic->p[Y_PLANE].i_visible_pitch;
 319     }
 320
 321     /*
 322      * Do the U and V planes
 323      */
 324
 325     p_in = p_pic->p[U_PLANE].p_pixels;
 326     p_in_v = p_pic->p[V_PLANE].p_pixels;
 327     p_in_end = p_in + p_pic->p[U_PLANE].i_visible_lines
 328                       * p_pic->p[U_PLANE].i_pitch - 8;
 329
 330     p_out = p_outpic->p[U_PLANE].p_pixels;
 331     p_out_v = p_outpic->p[V_PLANE].p_pixels;
 332
 333     i_sin = sin(f_hue) * 256;
 334     i_cos = cos(f_hue) * 256;
 335
 336     i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
 337     i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
 338
 339     if ( i_sat > 256 )
 340     {
 341 #define WRITE_UV_CLIP() \
 342     i_u = *p_in++ ; i_v = *p_in_v++ ; \
 343     *p_out++ = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 344                            * i_sat) >> 8) + 128); \
 345     *p_out_v++ = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 346                            * i_sat) >> 8) + 128)
 347
 348         uint8_t i_u, i_v;
 349
 350         for( ; p_in < p_in_end ; )
 351         {
 352             p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
 353
 354             for( ; p_in < p_line_end ; )
 355             {
 356                 /* Do 8 pixels at a time */
 357                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 358                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 359                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 360                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 361             }
 362
 363             p_line_end += 8;
 364
 365             for( ; p_in < p_line_end ; )
 366             {
 367                 WRITE_UV_CLIP();
 368             }
 369
 370             p_in += p_pic->p[U_PLANE].i_pitch
 371                   - p_pic->p[U_PLANE].i_visible_pitch;
 372             p_in_v += p_pic->p[V_PLANE].i_pitch
 373                     - p_pic->p[V_PLANE].i_visible_pitch;
 374             p_out += p_outpic->p[U_PLANE].i_pitch
 375                    - p_outpic->p[U_PLANE].i_visible_pitch;
 376             p_out_v += p_outpic->p[V_PLANE].i_pitch
 377                      - p_outpic->p[V_PLANE].i_visible_pitch;
 378         }
 379 #undef WRITE_UV_CLIP
 380     }
 381     else
 382     {
 383 #define WRITE_UV() \
 384     i_u = *p_in++ ; i_v = *p_in_v++ ; \
 385     *p_out++ = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 386                        * i_sat) >> 8) + 128; \
 387     *p_out_v++ = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 388                        * i_sat) >> 8) + 128
 389
 390         uint8_t i_u, i_v;
 391
 392         for( ; p_in < p_in_end ; )
 393         {
 394             p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
 395
 396             for( ; p_in < p_line_end ; )
 397             {
 398                 /* Do 8 pixels at a time */
 399                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 400                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 401             }
 402
 403             p_line_end += 8;
 404
 405             for( ; p_in < p_line_end ; )
 406             {
 407                 WRITE_UV();
 408             }
 409
 410             p_in += p_pic->p[U_PLANE].i_pitch
 411                   - p_pic->p[U_PLANE].i_visible_pitch;
 412             p_in_v += p_pic->p[V_PLANE].i_pitch
 413                     - p_pic->p[V_PLANE].i_visible_pitch;
 414             p_out += p_outpic->p[U_PLANE].i_pitch
 415                    - p_outpic->p[U_PLANE].i_visible_pitch;
 416             p_out_v += p_outpic->p[V_PLANE].i_pitch
 417                      - p_outpic->p[V_PLANE].i_visible_pitch;
 418         }
 419 #undef WRITE_UV
 420     }
 421
 422     return CopyInfoAndRelease( p_outpic, p_pic );
 423 }
 424
 425 /*****************************************************************************
 426  * Run the filter on a Packed YUV picture
 427  *****************************************************************************/
 428 static picture_t *FilterPacked( filter_t *p_filter, picture_t *p_pic )
 429 {
 430     int pi_luma[256];
 431     int pi_gamma[256];
 432
 433     picture_t *p_outpic;
 434     uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
 435     uint8_t *p_out, *p_out_v;
 436     int i_y_offset, i_u_offset, i_v_offset;
 437
 438     int i_visible_lines, i_pitch, i_visible_pitch;
 439
 440     bool b_thres;
 441     double  f_hue;
 442     double  f_gamma;
 443     int32_t i_cont, i_lum;
 444     int i_sat, i_sin, i_cos, i_x, i_y;
 445     int i;
 446
 447     filter_sys_t *p_sys = p_filter->p_sys;
 448
 449     if( !p_pic ) return NULL;
 450
 451     i_visible_lines = p_pic->p->i_visible_lines;
 452     i_pitch = p_pic->p->i_pitch;
 453     i_visible_pitch = p_pic->p->i_visible_pitch;
 454
 455     if( GetPackedYuvOffsets( p_pic->format.i_chroma, &i_y_offset,
 456                              &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 457     {
 458         msg_Warn( p_filter, "Unsupported input chroma (%4.4s)",
 459                   (char*)&(p_pic->format.i_chroma) );
 460
 461         picture_Release( p_pic );
 462         return NULL;
 463     }
 464
 465     p_outpic = filter_NewPicture( p_filter );
 466     if( !p_outpic )
 467     {
 468         msg_Warn( p_filter, "can't get output picture" );
 469
 470         picture_Release( p_pic );
 471         return NULL;
 472     }
 473
 474     /* Get variables */
 475     vlc_mutex_lock( &p_sys->lock );
 476     i_cont = (int)( p_sys->f_contrast * 255 );
 477     i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
 478     f_hue = (float)( p_sys->i_hue * M_PI / 180 );
 479     i_sat = (int)( p_sys->f_saturation * 256 );
 480     f_gamma = 1.0 / p_sys->f_gamma;
 481     b_thres = p_sys->b_brightness_threshold;
 482     vlc_mutex_unlock( &p_sys->lock );
 483
 484     /*
 485      * Threshold mode drops out everything about luma, contrast and gamma.
 486      */
 487     if( !b_thres )
 488     {
 489
 490         /* Contrast is a fast but kludged function, so I put this gap to be
 491          * cleaner :) */
 492         i_lum += 128 - i_cont / 2;
 493
 494         /* Fill the gamma lookup table */
 495         for( i = 0 ; i < 256 ; i++ )
 496         {
 497           pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
 498         }
 499
 500         /* Fill the luma lookup table */
 501         for( i = 0 ; i < 256 ; i++ )
 502         {
 503             pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
 504         }
 505     }
 506     else
 507     {
 508         /*
 509          * We get luma as threshold value: the higher it is, the darker is
 510          * the image. Should I reverse this?
 511          */
 512         for( i = 0 ; i < 256 ; i++ )
 513         {
 514             pi_luma[ i ] = (i < i_lum) ? 0 : 255;
 515         }
 516
 517         /*
 518          * Desaturates image to avoid that strange yellow halo...
 519          */
 520         i_sat = 0;
 521     }
 522
 523     /*
 524      * Do the Y plane
 525      */
 526
 527     p_in = p_pic->p->p_pixels + i_y_offset;
 528     p_in_end = p_in + p_pic->p->i_visible_lines * p_pic->p->i_pitch - 8 * 4;
 529
 530     p_out = p_outpic->p->p_pixels + i_y_offset;
 531
 532     for( ; p_in < p_in_end ; )
 533     {
 534         p_line_end = p_in + i_visible_pitch - 8 * 4;
 535
 536         for( ; p_in < p_line_end ; )
 537         {
 538             /* Do 8 pixels at a time */
 539             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 540             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 541             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 542             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 543             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 544             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 545             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 546             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 547         }
 548
 549         p_line_end += 8 * 4;
 550
 551         for( ; p_in < p_line_end ; )
 552         {
 553             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 554         }
 555
 556         p_in += i_pitch - p_pic->p->i_visible_pitch;
 557         p_out += i_pitch - p_outpic->p->i_visible_pitch;
 558     }
 559
 560     /*
 561      * Do the U and V planes
 562      */
 563
 564     p_in = p_pic->p->p_pixels + i_u_offset;
 565     p_in_v = p_pic->p->p_pixels + i_v_offset;
 566     p_in_end = p_in + i_visible_lines * i_pitch - 8 * 4;
 567
 568     p_out = p_outpic->p->p_pixels + i_u_offset;
 569     p_out_v = p_outpic->p->p_pixels + i_v_offset;
 570
 571     i_sin = sin(f_hue) * 256;
 572     i_cos = cos(f_hue) * 256;
 573
 574     i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
 575     i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
 576
 577     if ( i_sat > 256 )
 578     {
 579 #define WRITE_UV_CLIP() \
 580     i_u = *p_in; p_in += 4; i_v = *p_in_v; p_in_v += 4; \
 581     *p_out = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 582                            * i_sat) >> 8) + 128); \
 583     p_out += 4; \
 584     *p_out_v = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 585                            * i_sat) >> 8) + 128); \
 586     p_out_v += 4
 587
 588         uint8_t i_u, i_v;
 589
 590         for( ; p_in < p_in_end ; )
 591         {
 592             p_line_end = p_in + i_visible_pitch - 8 * 4;
 593
 594             for( ; p_in < p_line_end ; )
 595             {
 596                 /* Do 8 pixels at a time */
 597                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 598                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 599                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 600                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 601             }
 602
 603             p_line_end += 8 * 4;
 604
 605             for( ; p_in < p_line_end ; )
 606             {
 607                 WRITE_UV_CLIP();
 608             }
 609
 610             p_in += i_pitch - i_visible_pitch;
 611             p_in_v += i_pitch - i_visible_pitch;
 612             p_out += i_pitch - i_visible_pitch;
 613             p_out_v += i_pitch - i_visible_pitch;
 614         }
 615 #undef WRITE_UV_CLIP
 616     }
 617     else
 618     {
 619 #define WRITE_UV() \
 620     i_u = *p_in; p_in += 4; i_v = *p_in_v; p_in_v += 4; \
 621     *p_out = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 622                        * i_sat) >> 8) + 128; \
 623     p_out += 4; \
 624     *p_out_v = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 625                        * i_sat) >> 8) + 128; \
 626     p_out_v += 4
 627
 628         uint8_t i_u, i_v;
 629
 630         for( ; p_in < p_in_end ; )
 631         {
 632             p_line_end = p_in + i_visible_pitch - 8 * 4;
 633
 634             for( ; p_in < p_line_end ; )
 635             {
 636                 /* Do 8 pixels at a time */
 637                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 638                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 639             }
 640
 641             p_line_end += 8 * 4;
 642
 643             for( ; p_in < p_line_end ; )
 644             {
 645                 WRITE_UV();
 646             }
 647
 648             p_in += i_pitch - i_visible_pitch;
 649             p_in_v += i_pitch - i_visible_pitch;
 650             p_out += i_pitch - i_visible_pitch;
 651             p_out_v += i_pitch - i_visible_pitch;
 652         }
 653 #undef WRITE_UV
 654     }
 655
 656     return CopyInfoAndRelease( p_outpic, p_pic );
 657 }
 658
 659 static int AdjustCallback( vlc_object_t *p_this, char const *psz_var,
 660                            vlc_value_t oldval, vlc_value_t newval,
 661                            void *p_data )
 662 {
 663     VLC_UNUSED(p_this); VLC_UNUSED(oldval);
 664     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 665
 666     vlc_mutex_lock( &p_sys->lock );
 667     if( !strcmp( psz_var, "contrast" ) )
 668         p_sys->f_contrast = newval.f_float;
 669     else if( !strcmp( psz_var, "brightness" ) )
 670         p_sys->f_brightness = newval.f_float;
 671     else if( !strcmp( psz_var, "hue" ) )
 672         p_sys->i_hue = newval.i_int;
 673     else if( !strcmp( psz_var, "saturation" ) )
 674         p_sys->f_saturation = newval.f_float;
 675     else if( !strcmp( psz_var, "gamma" ) )
 676         p_sys->f_gamma = newval.f_float;
 677     else if( !strcmp( psz_var, "brightness-threshold" ) )
 678         p_sys->b_brightness_threshold = newval.b_bool;
 679     vlc_mutex_unlock( &p_sys->lock );
 680
 681     return VLC_SUCCESS;
 682 }