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 #include <errno.h>
  29 #include <math.h>
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc_sout.h>
  33 #include <vlc_vout.h>
  34
  35 #include "vlc_filter.h"
  36 #include "filter_picture.h"
  37
  38 #ifndef M_PI
  39 #   define M_PI 3.14159265358979323846
  40 #endif
  41
  42 #define eight_times( x )    x x x x x x x x
  43
  44 /*****************************************************************************
  45  * Local prototypes
  46  *****************************************************************************/
  47 static int  Create    ( vlc_object_t * );
  48 static void Destroy   ( vlc_object_t * );
  49
  50 static picture_t *FilterPlanar( filter_t *, picture_t * );
  51 static picture_t *FilterPacked( filter_t *, picture_t * );
  52 static int AdjustCallback( vlc_object_t *p_this, char const *psz_var,
  53                            vlc_value_t oldval, vlc_value_t newval,
  54                            void *p_data );
  55
  56 /*****************************************************************************
  57  * Module descriptor
  58  *****************************************************************************/
  59
  60 #define THRES_TEXT N_("Brightness threshold")
  61 #define THRES_LONGTEXT N_("When this mode is enabled, pixels will be " \
  62         "shown as black or white. The threshold value will be the brighness " \
  63         "defined below." )
  64 #define CONT_TEXT N_("Image contrast (0-2)")
  65 #define CONT_LONGTEXT N_("Set the image contrast, between 0 and 2. Defaults to 1.")
  66 #define HUE_TEXT N_("Image hue (0-360)")
  67 #define HUE_LONGTEXT N_("Set the image hue, between 0 and 360. Defaults to 0.")
  68 #define SAT_TEXT N_("Image saturation (0-3)")
  69 #define SAT_LONGTEXT N_("Set the image saturation, between 0 and 3. Defaults to 1.")
  70 #define LUM_TEXT N_("Image brightness (0-2)")
  71 #define LUM_LONGTEXT N_("Set the image brightness, between 0 and 2. Defaults to 1.")
  72 #define GAMMA_TEXT N_("Image gamma (0-10)")
  73 #define GAMMA_LONGTEXT N_("Set the image gamma, between 0.01 and 10. Defaults to 1.")
  74
  75 vlc_module_begin();
  76     set_description( _("Image properties filter") );
  77     set_shortname( _("Image adjust" ));
  78     set_category( CAT_VIDEO );
  79     set_subcategory( SUBCAT_VIDEO_VFILTER );
  80     set_capability( "video filter2", 0 );
  81
  82     add_float_with_range( "contrast", 1.0, 0.0, 2.0, NULL,
  83                           CONT_TEXT, CONT_LONGTEXT, VLC_FALSE );
  84     add_float_with_range( "brightness", 1.0, 0.0, 2.0, NULL,
  85                            LUM_TEXT, LUM_LONGTEXT, VLC_FALSE );
  86     add_integer_with_range( "hue", 0, 0, 360, NULL,
  87                             HUE_TEXT, HUE_LONGTEXT, VLC_FALSE );
  88     add_float_with_range( "saturation", 1.0, 0.0, 3.0, NULL,
  89                           SAT_TEXT, SAT_LONGTEXT, VLC_FALSE );
  90     add_float_with_range( "gamma", 1.0, 0.01, 10.0, NULL,
  91                           GAMMA_TEXT, GAMMA_LONGTEXT, VLC_FALSE );
  92
  93     add_bool( "brightness-threshold", 0, NULL,
  94               THRES_TEXT, THRES_LONGTEXT, VLC_FALSE );
  95
  96     add_shortcut( "adjust" );
  97     set_callbacks( Create, Destroy );
  98 vlc_module_end();
  99
 100 static const char *ppsz_filter_options[] = {
 101     "contrast", "brightness", "hue", "saturation", "gamma",
 102     "brightness-threshold", NULL
 103 };
 104
 105 /*****************************************************************************
 106  * filter_sys_t: adjust filter method descriptor
 107  *****************************************************************************/
 108 struct filter_sys_t
 109 {
 110     double     f_contrast;
 111     double     f_brightness;
 112     int        i_hue;
 113     double     f_saturation;
 114     double     f_gamma;
 115     vlc_bool_t b_brightness_threshold;
 116 };
 117
 118 /*****************************************************************************
 119  * Create: allocates adjust video filter
 120  *****************************************************************************/
 121 static int Create( vlc_object_t *p_this )
 122 {
 123     filter_t *p_filter = (filter_t *)p_this;
 124     filter_sys_t *p_sys;
 125
 126     switch( p_filter->fmt_in.video.i_chroma )
 127     {
 128         CASE_PLANAR_YUV
 129             /* Planar YUV */
 130             p_filter->pf_video_filter = FilterPlanar;
 131             break;
 132
 133         CASE_PACKED_YUV_422
 134             /* Packed YUV 4:2:2 */
 135             p_filter->pf_video_filter = FilterPacked;
 136             break;
 137
 138         default:
 139             msg_Err( p_filter, "Unsupported input chroma (%4s)",
 140                      (char*)&(p_filter->fmt_in.video.i_chroma) );
 141             return VLC_EGENERIC;
 142     }
 143
 144     if( p_filter->fmt_in.video.i_chroma != p_filter->fmt_out.video.i_chroma )
 145     {
 146         msg_Err( p_filter, "Input and output chromas don't match" );
 147         return VLC_EGENERIC;
 148     }
 149
 150     /* Allocate structure */
 151     p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 152     if( p_filter->p_sys == NULL )
 153     {
 154         msg_Err( p_filter, "out of memory" );
 155         return VLC_ENOMEM;
 156     }
 157     p_sys = p_filter->p_sys;
 158
 159     /* needed to get options passed in transcode using the
 160      * adjust{name=value} syntax */
 161     config_ChainParse( p_filter, "", ppsz_filter_options,
 162                    p_filter->p_cfg );
 163
 164     p_sys->f_contrast = var_CreateGetFloatCommand( p_filter, "contrast" );
 165     p_sys->f_brightness = var_CreateGetFloatCommand( p_filter, "brightness" );
 166     p_sys->i_hue = var_CreateGetIntegerCommand( p_filter, "hue" );
 167     p_sys->f_saturation = var_CreateGetFloatCommand( p_filter, "saturation" );
 168     p_sys->f_gamma = var_CreateGetFloatCommand( p_filter, "gamma" );
 169     p_sys->b_brightness_threshold =
 170         var_CreateGetBoolCommand( p_filter, "brightness-threshold" );
 171
 172     var_AddCallback( p_filter, "contrast",   AdjustCallback, p_sys );
 173     var_AddCallback( p_filter, "brightness", AdjustCallback, p_sys );
 174     var_AddCallback( p_filter, "hue",        AdjustCallback, p_sys );
 175     var_AddCallback( p_filter, "saturation", AdjustCallback, p_sys );
 176     var_AddCallback( p_filter, "gamma",      AdjustCallback, p_sys );
 177     var_AddCallback( p_filter, "brightness-threshold",
 178                                              AdjustCallback, p_sys );
 179
 180     return VLC_SUCCESS;
 181 }
 182
 183 /*****************************************************************************
 184  * Destroy: destroy adjust video filter
 185  *****************************************************************************/
 186 static void Destroy( vlc_object_t *p_this )
 187 {
 188     filter_t *p_filter = (filter_t *)p_this;
 189     free( p_filter->p_sys );
 190 }
 191
 192 /*****************************************************************************
 193  * Run the filter on a Planar YUV picture
 194  *****************************************************************************/
 195 static picture_t *FilterPlanar( filter_t *p_filter, picture_t *p_pic )
 196 {
 197     int pi_luma[256];
 198     int pi_gamma[256];
 199
 200     picture_t *p_outpic;
 201     uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
 202     uint8_t *p_out, *p_out_v;
 203
 204     vlc_bool_t b_thres;
 205     double  f_hue;
 206     double  f_gamma;
 207     int32_t i_cont, i_lum;
 208     int i_sat, i_sin, i_cos, i_x, i_y;
 209     int i;
 210
 211     filter_sys_t *p_sys = p_filter->p_sys;
 212
 213     if( !p_pic ) return NULL;
 214
 215     p_outpic = p_filter->pf_vout_buffer_new( p_filter );
 216     if( !p_outpic )
 217     {
 218         msg_Warn( p_filter, "can't get output picture" );
 219         if( p_pic->pf_release )
 220             p_pic->pf_release( p_pic );
 221         return NULL;
 222     }
 223
 224     /* Getvariables */
 225     i_cont = (int)( p_sys->f_contrast * 255 );
 226     i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
 227     f_hue = (float)( p_sys->i_hue * M_PI / 180 );
 228     i_sat = (int)( p_sys->f_saturation * 256 );
 229     f_gamma = 1.0 / p_sys->f_gamma;
 230     b_thres = p_sys->b_brightness_threshold;
 231
 232     /*
 233      * Threshold mode drops out everything about luma, contrast and gamma.
 234      */
 235     if( b_thres != VLC_TRUE )
 236     {
 237
 238         /* Contrast is a fast but kludged function, so I put this gap to be
 239          * cleaner :) */
 240         i_lum += 128 - i_cont / 2;
 241
 242         /* Fill the gamma lookup table */
 243         for( i = 0 ; i < 256 ; i++ )
 244         {
 245           pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
 246         }
 247
 248         /* Fill the luma lookup table */
 249         for( i = 0 ; i < 256 ; i++ )
 250         {
 251             pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
 252         }
 253     }
 254     else
 255     {
 256         /*
 257          * We get luma as threshold value: the higher it is, the darker is
 258          * the image. Should I reverse this?
 259          */
 260         for( i = 0 ; i < 256 ; i++ )
 261         {
 262             pi_luma[ i ] = (i < i_lum) ? 0 : 255;
 263         }
 264
 265         /*
 266          * Desaturates image to avoid that strange yellow halo...
 267          */
 268         i_sat = 0;
 269     }
 270
 271     /*
 272      * Do the Y plane
 273      */
 274
 275     p_in = p_pic->p[Y_PLANE].p_pixels;
 276     p_in_end = p_in + p_pic->p[Y_PLANE].i_visible_lines
 277                       * p_pic->p[Y_PLANE].i_pitch - 8;
 278
 279     p_out = p_outpic->p[Y_PLANE].p_pixels;
 280
 281     for( ; p_in < p_in_end ; )
 282     {
 283         p_line_end = p_in + p_pic->p[Y_PLANE].i_visible_pitch - 8;
 284
 285         for( ; p_in < p_line_end ; )
 286         {
 287             /* Do 8 pixels at a time */
 288             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 289             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 290             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 291             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 292         }
 293
 294         p_line_end += 8;
 295
 296         for( ; p_in < p_line_end ; )
 297         {
 298             *p_out++ = pi_luma[ *p_in++ ];
 299         }
 300
 301         p_in += p_pic->p[Y_PLANE].i_pitch
 302               - p_pic->p[Y_PLANE].i_visible_pitch;
 303         p_out += p_outpic->p[Y_PLANE].i_pitch
 304                - p_outpic->p[Y_PLANE].i_visible_pitch;
 305     }
 306
 307     /*
 308      * Do the U and V planes
 309      */
 310
 311     p_in = p_pic->p[U_PLANE].p_pixels;
 312     p_in_v = p_pic->p[V_PLANE].p_pixels;
 313     p_in_end = p_in + p_pic->p[U_PLANE].i_visible_lines
 314                       * p_pic->p[U_PLANE].i_pitch - 8;
 315
 316     p_out = p_outpic->p[U_PLANE].p_pixels;
 317     p_out_v = p_outpic->p[V_PLANE].p_pixels;
 318
 319     i_sin = sin(f_hue) * 256;
 320     i_cos = cos(f_hue) * 256;
 321
 322     i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
 323     i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
 324
 325     if ( i_sat > 256 )
 326     {
 327 #define WRITE_UV_CLIP() \
 328     i_u = *p_in++ ; i_v = *p_in_v++ ; \
 329     *p_out++ = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 330                            * i_sat) >> 8) + 128); \
 331     *p_out_v++ = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 332                            * i_sat) >> 8) + 128)
 333
 334         uint8_t i_u, i_v;
 335
 336         for( ; p_in < p_in_end ; )
 337         {
 338             p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
 339
 340             for( ; p_in < p_line_end ; )
 341             {
 342                 /* Do 8 pixels at a time */
 343                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 344                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 345                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 346                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 347             }
 348
 349             p_line_end += 8;
 350
 351             for( ; p_in < p_line_end ; )
 352             {
 353                 WRITE_UV_CLIP();
 354             }
 355
 356             p_in += p_pic->p[U_PLANE].i_pitch
 357                   - p_pic->p[U_PLANE].i_visible_pitch;
 358             p_in_v += p_pic->p[V_PLANE].i_pitch
 359                     - p_pic->p[V_PLANE].i_visible_pitch;
 360             p_out += p_outpic->p[U_PLANE].i_pitch
 361                    - p_outpic->p[U_PLANE].i_visible_pitch;
 362             p_out_v += p_outpic->p[V_PLANE].i_pitch
 363                      - p_outpic->p[V_PLANE].i_visible_pitch;
 364         }
 365 #undef WRITE_UV_CLIP
 366     }
 367     else
 368     {
 369 #define WRITE_UV() \
 370     i_u = *p_in++ ; i_v = *p_in_v++ ; \
 371     *p_out++ = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 372                        * i_sat) >> 8) + 128; \
 373     *p_out_v++ = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 374                        * i_sat) >> 8) + 128
 375
 376         uint8_t i_u, i_v;
 377
 378         for( ; p_in < p_in_end ; )
 379         {
 380             p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
 381
 382             for( ; p_in < p_line_end ; )
 383             {
 384                 /* Do 8 pixels at a time */
 385                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 386                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 387             }
 388
 389             p_line_end += 8;
 390
 391             for( ; p_in < p_line_end ; )
 392             {
 393                 WRITE_UV();
 394             }
 395
 396             p_in += p_pic->p[U_PLANE].i_pitch
 397                   - p_pic->p[U_PLANE].i_visible_pitch;
 398             p_in_v += p_pic->p[V_PLANE].i_pitch
 399                     - p_pic->p[V_PLANE].i_visible_pitch;
 400             p_out += p_outpic->p[U_PLANE].i_pitch
 401                    - p_outpic->p[U_PLANE].i_visible_pitch;
 402             p_out_v += p_outpic->p[V_PLANE].i_pitch
 403                      - p_outpic->p[V_PLANE].i_visible_pitch;
 404         }
 405 #undef WRITE_UV
 406     }
 407
 408     p_outpic->date = p_pic->date;
 409     p_outpic->b_force = p_pic->b_force;
 410     p_outpic->i_nb_fields = p_pic->i_nb_fields;
 411     p_outpic->b_progressive = p_pic->b_progressive;
 412     p_outpic->b_top_field_first = p_pic->b_top_field_first;
 413
 414     if( p_pic->pf_release )
 415         p_pic->pf_release( p_pic );
 416
 417     return p_outpic;
 418 }
 419
 420 /*****************************************************************************
 421  * Run the filter on a Packed YUV picture
 422  *****************************************************************************/
 423 static picture_t *FilterPacked( filter_t *p_filter, picture_t *p_pic )
 424 {
 425     int pi_luma[256];
 426     int pi_gamma[256];
 427
 428     picture_t *p_outpic;
 429     uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
 430     uint8_t *p_out, *p_out_v;
 431     int i_y_offset, i_u_offset, i_v_offset;
 432
 433     int i_lines, i_visible_lines, i_pitch, i_visible_pitch;
 434
 435     vlc_bool_t b_thres;
 436     double  f_hue;
 437     double  f_gamma;
 438     int32_t i_cont, i_lum;
 439     int i_sat, i_sin, i_cos, i_x, i_y;
 440     int i;
 441
 442     filter_sys_t *p_sys = p_filter->p_sys;
 443
 444     if( !p_pic ) return NULL;
 445
 446     i_lines = p_pic->p->i_lines;
 447     i_visible_lines = p_pic->p->i_visible_lines;
 448     i_pitch = p_pic->p->i_pitch;
 449     i_visible_pitch = p_pic->p->i_visible_pitch;
 450
 451     if( GetPackedYuvOffsets( p_pic->format.i_chroma, &i_y_offset,
 452                              &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 453     {
 454         msg_Warn( p_filter, "Unsupported input chroma (%4s)",
 455                   (char*)&(p_pic->format.i_chroma) );
 456         if( p_pic->pf_release )
 457             p_pic->pf_release( p_pic );
 458         return NULL;
 459     }
 460
 461     p_outpic = p_filter->pf_vout_buffer_new( p_filter );
 462     if( !p_outpic )
 463     {
 464         msg_Warn( p_filter, "can't get output picture" );
 465         if( p_pic->pf_release )
 466             p_pic->pf_release( p_pic );
 467         return NULL;
 468     }
 469
 470     /* Getvariables */
 471     i_cont = (int)( p_sys->f_contrast * 255 );
 472     i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
 473     f_hue = (float)( p_sys->i_hue * M_PI / 180 );
 474     i_sat = (int)( p_sys->f_saturation * 256 );
 475     f_gamma = 1.0 / p_sys->f_gamma;
 476     b_thres = p_sys->b_brightness_threshold;
 477
 478     /*
 479      * Threshold mode drops out everything about luma, contrast and gamma.
 480      */
 481     if( b_thres != VLC_TRUE )
 482     {
 483
 484         /* Contrast is a fast but kludged function, so I put this gap to be
 485          * cleaner :) */
 486         i_lum += 128 - i_cont / 2;
 487
 488         /* Fill the gamma lookup table */
 489         for( i = 0 ; i < 256 ; i++ )
 490         {
 491           pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
 492         }
 493
 494         /* Fill the luma lookup table */
 495         for( i = 0 ; i < 256 ; i++ )
 496         {
 497             pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
 498         }
 499     }
 500     else
 501     {
 502         /*
 503          * We get luma as threshold value: the higher it is, the darker is
 504          * the image. Should I reverse this?
 505          */
 506         for( i = 0 ; i < 256 ; i++ )
 507         {
 508             pi_luma[ i ] = (i < i_lum) ? 0 : 255;
 509         }
 510
 511         /*
 512          * Desaturates image to avoid that strange yellow halo...
 513          */
 514         i_sat = 0;
 515     }
 516
 517     /*
 518      * Do the Y plane
 519      */
 520
 521     p_in = p_pic->p->p_pixels + i_y_offset;
 522     p_in_end = p_in + p_pic->p->i_visible_lines * p_pic->p->i_pitch - 8 * 4;
 523
 524     p_out = p_outpic->p->p_pixels + i_y_offset;
 525
 526     for( ; p_in < p_in_end ; )
 527     {
 528         p_line_end = p_in + i_visible_pitch - 8 * 4;
 529
 530         for( ; p_in < p_line_end ; )
 531         {
 532             /* Do 8 pixels at a time */
 533             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 534             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 535             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 536             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 537             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 538             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 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         }
 542
 543         p_line_end += 8 * 4;
 544
 545         for( ; p_in < p_line_end ; )
 546         {
 547             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 548         }
 549
 550         p_in += i_pitch - p_pic->p->i_visible_pitch;
 551         p_out += i_pitch - p_outpic->p->i_visible_pitch;
 552     }
 553
 554     /*
 555      * Do the U and V planes
 556      */
 557
 558     p_in = p_pic->p->p_pixels + i_u_offset;
 559     p_in_v = p_pic->p->p_pixels + i_v_offset;
 560     p_in_end = p_in + i_visible_lines * i_pitch - 8 * 4;
 561
 562     p_out = p_outpic->p->p_pixels + i_u_offset;
 563     p_out_v = p_outpic->p->p_pixels + i_v_offset;
 564
 565     i_sin = sin(f_hue) * 256;
 566     i_cos = cos(f_hue) * 256;
 567
 568     i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
 569     i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
 570
 571     if ( i_sat > 256 )
 572     {
 573 #define WRITE_UV_CLIP() \
 574     i_u = *p_in; p_in += 4; i_v = *p_in_v; p_in_v += 4; \
 575     *p_out = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 576                            * i_sat) >> 8) + 128); \
 577     p_out += 4; \
 578     *p_out_v = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 579                            * i_sat) >> 8) + 128); \
 580     p_out_v += 4
 581
 582         uint8_t i_u, i_v;
 583
 584         for( ; p_in < p_in_end ; )
 585         {
 586             p_line_end = p_in + i_visible_pitch - 8 * 4;
 587
 588             for( ; p_in < p_line_end ; )
 589             {
 590                 /* Do 8 pixels at a time */
 591                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 592                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 593                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 594                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 595             }
 596
 597             p_line_end += 8 * 4;
 598
 599             for( ; p_in < p_line_end ; )
 600             {
 601                 WRITE_UV_CLIP();
 602             }
 603
 604             p_in += i_pitch - i_visible_pitch;
 605             p_in_v += i_pitch - i_visible_pitch;
 606             p_out += i_pitch - i_visible_pitch;
 607             p_out_v += i_pitch - i_visible_pitch;
 608         }
 609 #undef WRITE_UV_CLIP
 610     }
 611     else
 612     {
 613 #define WRITE_UV() \
 614     i_u = *p_in; p_in += 4; i_v = *p_in_v; p_in_v += 4; \
 615     *p_out = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 616                        * i_sat) >> 8) + 128; \
 617     p_out += 4; \
 618     *p_out_v = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 619                        * i_sat) >> 8) + 128; \
 620     p_out_v += 4
 621
 622         uint8_t i_u, i_v;
 623
 624         for( ; p_in < p_in_end ; )
 625         {
 626             p_line_end = p_in + i_visible_pitch - 8 * 4;
 627
 628             for( ; p_in < p_line_end ; )
 629             {
 630                 /* Do 8 pixels at a time */
 631                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 632                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 633             }
 634
 635             p_line_end += 8 * 4;
 636
 637             for( ; p_in < p_line_end ; )
 638             {
 639                 WRITE_UV();
 640             }
 641
 642             p_in += i_pitch - i_visible_pitch;
 643             p_in_v += i_pitch - i_visible_pitch;
 644             p_out += i_pitch - i_visible_pitch;
 645             p_out_v += i_pitch - i_visible_pitch;
 646         }
 647 #undef WRITE_UV
 648     }
 649
 650     p_outpic->date = p_pic->date;
 651     p_outpic->b_force = p_pic->b_force;
 652     p_outpic->i_nb_fields = p_pic->i_nb_fields;
 653     p_outpic->b_progressive = p_pic->b_progressive;
 654     p_outpic->b_top_field_first = p_pic->b_top_field_first;
 655
 656     if( p_pic->pf_release )
 657         p_pic->pf_release( p_pic );
 658
 659     return p_outpic;
 660 }
 661
 662 static int AdjustCallback( vlc_object_t *p_this, char const *psz_var,
 663                            vlc_value_t oldval, vlc_value_t newval,
 664                            void *p_data )
 665 {
 666     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 667
 668     if( !strcmp( psz_var, "contrast" ) )
 669         p_sys->f_contrast = newval.f_float;
 670     else if( !strcmp( psz_var, "brightness" ) )
 671         p_sys->f_brightness = newval.f_float;
 672     else if( !strcmp( psz_var, "hue" ) )
 673         p_sys->i_hue = newval.i_int;
 674     else if( !strcmp( psz_var, "saturation" ) )
 675         p_sys->f_saturation = newval.f_float;
 676     else if( !strcmp( psz_var, "gamma" ) )
 677         p_sys->f_gamma = newval.f_float;
 678     else if( !strcmp( psz_var, "brightness-threshold" ) )
 679         p_sys->b_brightness_threshold = newval.b_bool;
 680     else
 681         return VLC_EGENERIC;
 682     return VLC_SUCCESS;
 683 }