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 #ifdef HAVE_CONFIG_H
  32 # include "config.h"
  33 #endif
  34
  35 #include <vlc/vlc.h>
  36 #include <vlc_sout.h>
  37 #include <vlc_vout.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 brighness " \
  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( _("Image properties filter") );
  81     set_shortname( _("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, NULL,
  87                           CONT_TEXT, CONT_LONGTEXT, VLC_FALSE );
  88     add_float_with_range( "brightness", 1.0, 0.0, 2.0, NULL,
  89                            LUM_TEXT, LUM_LONGTEXT, VLC_FALSE );
  90     add_integer_with_range( "hue", 0, 0, 360, NULL,
  91                             HUE_TEXT, HUE_LONGTEXT, VLC_FALSE );
  92     add_float_with_range( "saturation", 1.0, 0.0, 3.0, NULL,
  93                           SAT_TEXT, SAT_LONGTEXT, VLC_FALSE );
  94     add_float_with_range( "gamma", 1.0, 0.01, 10.0, NULL,
  95                           GAMMA_TEXT, GAMMA_LONGTEXT, VLC_FALSE );
  96
  97     add_bool( "brightness-threshold", 0, NULL,
  98               THRES_TEXT, THRES_LONGTEXT, VLC_FALSE );
  99
 100     add_shortcut( "adjust" );
 101     set_callbacks( Create, Destroy );
 102 vlc_module_end();
 103
 104 static const char *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     double     f_contrast;
 115     double     f_brightness;
 116     int        i_hue;
 117     double     f_saturation;
 118     double     f_gamma;
 119     vlc_bool_t b_brightness_threshold;
 120 };
 121
 122 /*****************************************************************************
 123  * Create: allocates adjust video filter
 124  *****************************************************************************/
 125 static int Create( vlc_object_t *p_this )
 126 {
 127     filter_t *p_filter = (filter_t *)p_this;
 128     filter_sys_t *p_sys;
 129
 130     switch( p_filter->fmt_in.video.i_chroma )
 131     {
 132         CASE_PLANAR_YUV
 133             /* Planar YUV */
 134             p_filter->pf_video_filter = FilterPlanar;
 135             break;
 136
 137         CASE_PACKED_YUV_422
 138             /* Packed YUV 4:2:2 */
 139             p_filter->pf_video_filter = FilterPacked;
 140             break;
 141
 142         default:
 143             msg_Err( p_filter, "Unsupported input chroma (%4s)",
 144                      (char*)&(p_filter->fmt_in.video.i_chroma) );
 145             return VLC_EGENERIC;
 146     }
 147
 148     if( p_filter->fmt_in.video.i_chroma != p_filter->fmt_out.video.i_chroma )
 149     {
 150         msg_Err( p_filter, "Input and output chromas don't match" );
 151         return VLC_EGENERIC;
 152     }
 153
 154     /* Allocate structure */
 155     p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 156     if( p_filter->p_sys == NULL )
 157     {
 158         msg_Err( p_filter, "out of memory" );
 159         return VLC_ENOMEM;
 160     }
 161     p_sys = p_filter->p_sys;
 162
 163     /* needed to get options passed in transcode using the
 164      * adjust{name=value} syntax */
 165     config_ChainParse( p_filter, "", ppsz_filter_options,
 166                    p_filter->p_cfg );
 167
 168     p_sys->f_contrast = var_CreateGetFloatCommand( p_filter, "contrast" );
 169     p_sys->f_brightness = var_CreateGetFloatCommand( p_filter, "brightness" );
 170     p_sys->i_hue = var_CreateGetIntegerCommand( p_filter, "hue" );
 171     p_sys->f_saturation = var_CreateGetFloatCommand( p_filter, "saturation" );
 172     p_sys->f_gamma = var_CreateGetFloatCommand( p_filter, "gamma" );
 173     p_sys->b_brightness_threshold =
 174         var_CreateGetBoolCommand( p_filter, "brightness-threshold" );
 175
 176     var_AddCallback( p_filter, "contrast",   AdjustCallback, p_sys );
 177     var_AddCallback( p_filter, "brightness", AdjustCallback, p_sys );
 178     var_AddCallback( p_filter, "hue",        AdjustCallback, p_sys );
 179     var_AddCallback( p_filter, "saturation", AdjustCallback, p_sys );
 180     var_AddCallback( p_filter, "gamma",      AdjustCallback, p_sys );
 181     var_AddCallback( p_filter, "brightness-threshold",
 182                                              AdjustCallback, p_sys );
 183
 184     return VLC_SUCCESS;
 185 }
 186
 187 /*****************************************************************************
 188  * Destroy: destroy adjust video filter
 189  *****************************************************************************/
 190 static void Destroy( vlc_object_t *p_this )
 191 {
 192     filter_t *p_filter = (filter_t *)p_this;
 193     free( p_filter->p_sys );
 194 }
 195
 196 /*****************************************************************************
 197  * Run the filter on a Planar YUV picture
 198  *****************************************************************************/
 199 static picture_t *FilterPlanar( filter_t *p_filter, picture_t *p_pic )
 200 {
 201     int pi_luma[256];
 202     int pi_gamma[256];
 203
 204     picture_t *p_outpic;
 205     uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
 206     uint8_t *p_out, *p_out_v;
 207
 208     vlc_bool_t b_thres;
 209     double  f_hue;
 210     double  f_gamma;
 211     int32_t i_cont, i_lum;
 212     int i_sat, i_sin, i_cos, i_x, i_y;
 213     int i;
 214
 215     filter_sys_t *p_sys = p_filter->p_sys;
 216
 217     if( !p_pic ) return NULL;
 218
 219     p_outpic = p_filter->pf_vout_buffer_new( p_filter );
 220     if( !p_outpic )
 221     {
 222         msg_Warn( p_filter, "can't get output picture" );
 223         if( p_pic->pf_release )
 224             p_pic->pf_release( p_pic );
 225         return NULL;
 226     }
 227
 228     /* Getvariables */
 229     i_cont = (int)( p_sys->f_contrast * 255 );
 230     i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
 231     f_hue = (float)( p_sys->i_hue * M_PI / 180 );
 232     i_sat = (int)( p_sys->f_saturation * 256 );
 233     f_gamma = 1.0 / p_sys->f_gamma;
 234     b_thres = p_sys->b_brightness_threshold;
 235
 236     /*
 237      * Threshold mode drops out everything about luma, contrast and gamma.
 238      */
 239     if( b_thres != VLC_TRUE )
 240     {
 241
 242         /* Contrast is a fast but kludged function, so I put this gap to be
 243          * cleaner :) */
 244         i_lum += 128 - i_cont / 2;
 245
 246         /* Fill the gamma lookup table */
 247         for( i = 0 ; i < 256 ; i++ )
 248         {
 249           pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
 250         }
 251
 252         /* Fill the luma lookup table */
 253         for( i = 0 ; i < 256 ; i++ )
 254         {
 255             pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
 256         }
 257     }
 258     else
 259     {
 260         /*
 261          * We get luma as threshold value: the higher it is, the darker is
 262          * the image. Should I reverse this?
 263          */
 264         for( i = 0 ; i < 256 ; i++ )
 265         {
 266             pi_luma[ i ] = (i < i_lum) ? 0 : 255;
 267         }
 268
 269         /*
 270          * Desaturates image to avoid that strange yellow halo...
 271          */
 272         i_sat = 0;
 273     }
 274
 275     /*
 276      * Do the Y plane
 277      */
 278
 279     p_in = p_pic->p[Y_PLANE].p_pixels;
 280     p_in_end = p_in + p_pic->p[Y_PLANE].i_visible_lines
 281                       * p_pic->p[Y_PLANE].i_pitch - 8;
 282
 283     p_out = p_outpic->p[Y_PLANE].p_pixels;
 284
 285     for( ; p_in < p_in_end ; )
 286     {
 287         p_line_end = p_in + p_pic->p[Y_PLANE].i_visible_pitch - 8;
 288
 289         for( ; p_in < p_line_end ; )
 290         {
 291             /* Do 8 pixels at a time */
 292             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 293             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 294             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 295             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 296         }
 297
 298         p_line_end += 8;
 299
 300         for( ; p_in < p_line_end ; )
 301         {
 302             *p_out++ = pi_luma[ *p_in++ ];
 303         }
 304
 305         p_in += p_pic->p[Y_PLANE].i_pitch
 306               - p_pic->p[Y_PLANE].i_visible_pitch;
 307         p_out += p_outpic->p[Y_PLANE].i_pitch
 308                - p_outpic->p[Y_PLANE].i_visible_pitch;
 309     }
 310
 311     /*
 312      * Do the U and V planes
 313      */
 314
 315     p_in = p_pic->p[U_PLANE].p_pixels;
 316     p_in_v = p_pic->p[V_PLANE].p_pixels;
 317     p_in_end = p_in + p_pic->p[U_PLANE].i_visible_lines
 318                       * p_pic->p[U_PLANE].i_pitch - 8;
 319
 320     p_out = p_outpic->p[U_PLANE].p_pixels;
 321     p_out_v = p_outpic->p[V_PLANE].p_pixels;
 322
 323     i_sin = sin(f_hue) * 256;
 324     i_cos = cos(f_hue) * 256;
 325
 326     i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
 327     i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
 328
 329     if ( i_sat > 256 )
 330     {
 331 #define WRITE_UV_CLIP() \
 332     i_u = *p_in++ ; i_v = *p_in_v++ ; \
 333     *p_out++ = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 334                            * i_sat) >> 8) + 128); \
 335     *p_out_v++ = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 336                            * i_sat) >> 8) + 128)
 337
 338         uint8_t i_u, i_v;
 339
 340         for( ; p_in < p_in_end ; )
 341         {
 342             p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
 343
 344             for( ; p_in < p_line_end ; )
 345             {
 346                 /* Do 8 pixels at a time */
 347                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 348                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 349                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 350                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 351             }
 352
 353             p_line_end += 8;
 354
 355             for( ; p_in < p_line_end ; )
 356             {
 357                 WRITE_UV_CLIP();
 358             }
 359
 360             p_in += p_pic->p[U_PLANE].i_pitch
 361                   - p_pic->p[U_PLANE].i_visible_pitch;
 362             p_in_v += p_pic->p[V_PLANE].i_pitch
 363                     - p_pic->p[V_PLANE].i_visible_pitch;
 364             p_out += p_outpic->p[U_PLANE].i_pitch
 365                    - p_outpic->p[U_PLANE].i_visible_pitch;
 366             p_out_v += p_outpic->p[V_PLANE].i_pitch
 367                      - p_outpic->p[V_PLANE].i_visible_pitch;
 368         }
 369 #undef WRITE_UV_CLIP
 370     }
 371     else
 372     {
 373 #define WRITE_UV() \
 374     i_u = *p_in++ ; i_v = *p_in_v++ ; \
 375     *p_out++ = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 376                        * i_sat) >> 8) + 128; \
 377     *p_out_v++ = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 378                        * i_sat) >> 8) + 128
 379
 380         uint8_t i_u, i_v;
 381
 382         for( ; p_in < p_in_end ; )
 383         {
 384             p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
 385
 386             for( ; p_in < p_line_end ; )
 387             {
 388                 /* Do 8 pixels at a time */
 389                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 390                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 391             }
 392
 393             p_line_end += 8;
 394
 395             for( ; p_in < p_line_end ; )
 396             {
 397                 WRITE_UV();
 398             }
 399
 400             p_in += p_pic->p[U_PLANE].i_pitch
 401                   - p_pic->p[U_PLANE].i_visible_pitch;
 402             p_in_v += p_pic->p[V_PLANE].i_pitch
 403                     - p_pic->p[V_PLANE].i_visible_pitch;
 404             p_out += p_outpic->p[U_PLANE].i_pitch
 405                    - p_outpic->p[U_PLANE].i_visible_pitch;
 406             p_out_v += p_outpic->p[V_PLANE].i_pitch
 407                      - p_outpic->p[V_PLANE].i_visible_pitch;
 408         }
 409 #undef WRITE_UV
 410     }
 411
 412     p_outpic->date = p_pic->date;
 413     p_outpic->b_force = p_pic->b_force;
 414     p_outpic->i_nb_fields = p_pic->i_nb_fields;
 415     p_outpic->b_progressive = p_pic->b_progressive;
 416     p_outpic->b_top_field_first = p_pic->b_top_field_first;
 417
 418     if( p_pic->pf_release )
 419         p_pic->pf_release( p_pic );
 420
 421     return p_outpic;
 422 }
 423
 424 /*****************************************************************************
 425  * Run the filter on a Packed YUV picture
 426  *****************************************************************************/
 427 static picture_t *FilterPacked( filter_t *p_filter, picture_t *p_pic )
 428 {
 429     int pi_luma[256];
 430     int pi_gamma[256];
 431
 432     picture_t *p_outpic;
 433     uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
 434     uint8_t *p_out, *p_out_v;
 435     int i_y_offset, i_u_offset, i_v_offset;
 436
 437     int i_lines, i_visible_lines, i_pitch, i_visible_pitch;
 438
 439     vlc_bool_t b_thres;
 440     double  f_hue;
 441     double  f_gamma;
 442     int32_t i_cont, i_lum;
 443     int i_sat, i_sin, i_cos, i_x, i_y;
 444     int i;
 445
 446     filter_sys_t *p_sys = p_filter->p_sys;
 447
 448     if( !p_pic ) return NULL;
 449
 450     i_lines = p_pic->p->i_lines;
 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 (%4s)",
 459                   (char*)&(p_pic->format.i_chroma) );
 460         if( p_pic->pf_release )
 461             p_pic->pf_release( p_pic );
 462         return NULL;
 463     }
 464
 465     p_outpic = p_filter->pf_vout_buffer_new( p_filter );
 466     if( !p_outpic )
 467     {
 468         msg_Warn( p_filter, "can't get output picture" );
 469         if( p_pic->pf_release )
 470             p_pic->pf_release( p_pic );
 471         return NULL;
 472     }
 473
 474     /* Getvariables */
 475     i_cont = (int)( p_sys->f_contrast * 255 );
 476     i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
 477     f_hue = (float)( p_sys->i_hue * M_PI / 180 );
 478     i_sat = (int)( p_sys->f_saturation * 256 );
 479     f_gamma = 1.0 / p_sys->f_gamma;
 480     b_thres = p_sys->b_brightness_threshold;
 481
 482     /*
 483      * Threshold mode drops out everything about luma, contrast and gamma.
 484      */
 485     if( b_thres != VLC_TRUE )
 486     {
 487
 488         /* Contrast is a fast but kludged function, so I put this gap to be
 489          * cleaner :) */
 490         i_lum += 128 - i_cont / 2;
 491
 492         /* Fill the gamma lookup table */
 493         for( i = 0 ; i < 256 ; i++ )
 494         {
 495           pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
 496         }
 497
 498         /* Fill the luma lookup table */
 499         for( i = 0 ; i < 256 ; i++ )
 500         {
 501             pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
 502         }
 503     }
 504     else
 505     {
 506         /*
 507          * We get luma as threshold value: the higher it is, the darker is
 508          * the image. Should I reverse this?
 509          */
 510         for( i = 0 ; i < 256 ; i++ )
 511         {
 512             pi_luma[ i ] = (i < i_lum) ? 0 : 255;
 513         }
 514
 515         /*
 516          * Desaturates image to avoid that strange yellow halo...
 517          */
 518         i_sat = 0;
 519     }
 520
 521     /*
 522      * Do the Y plane
 523      */
 524
 525     p_in = p_pic->p->p_pixels + i_y_offset;
 526     p_in_end = p_in + p_pic->p->i_visible_lines * p_pic->p->i_pitch - 8 * 4;
 527
 528     p_out = p_outpic->p->p_pixels + i_y_offset;
 529
 530     for( ; p_in < p_in_end ; )
 531     {
 532         p_line_end = p_in + i_visible_pitch - 8 * 4;
 533
 534         for( ; p_in < p_line_end ; )
 535         {
 536             /* Do 8 pixels at a time */
 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             *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         }
 546
 547         p_line_end += 8 * 4;
 548
 549         for( ; p_in < p_line_end ; )
 550         {
 551             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 552         }
 553
 554         p_in += i_pitch - p_pic->p->i_visible_pitch;
 555         p_out += i_pitch - p_outpic->p->i_visible_pitch;
 556     }
 557
 558     /*
 559      * Do the U and V planes
 560      */
 561
 562     p_in = p_pic->p->p_pixels + i_u_offset;
 563     p_in_v = p_pic->p->p_pixels + i_v_offset;
 564     p_in_end = p_in + i_visible_lines * i_pitch - 8 * 4;
 565
 566     p_out = p_outpic->p->p_pixels + i_u_offset;
 567     p_out_v = p_outpic->p->p_pixels + i_v_offset;
 568
 569     i_sin = sin(f_hue) * 256;
 570     i_cos = cos(f_hue) * 256;
 571
 572     i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
 573     i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
 574
 575     if ( i_sat > 256 )
 576     {
 577 #define WRITE_UV_CLIP() \
 578     i_u = *p_in; p_in += 4; i_v = *p_in_v; p_in_v += 4; \
 579     *p_out = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 580                            * i_sat) >> 8) + 128); \
 581     p_out += 4; \
 582     *p_out_v = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 583                            * i_sat) >> 8) + 128); \
 584     p_out_v += 4
 585
 586         uint8_t i_u, i_v;
 587
 588         for( ; p_in < p_in_end ; )
 589         {
 590             p_line_end = p_in + i_visible_pitch - 8 * 4;
 591
 592             for( ; p_in < p_line_end ; )
 593             {
 594                 /* Do 8 pixels at a time */
 595                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 596                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 597                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 598                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 599             }
 600
 601             p_line_end += 8 * 4;
 602
 603             for( ; p_in < p_line_end ; )
 604             {
 605                 WRITE_UV_CLIP();
 606             }
 607
 608             p_in += i_pitch - i_visible_pitch;
 609             p_in_v += i_pitch - i_visible_pitch;
 610             p_out += i_pitch - i_visible_pitch;
 611             p_out_v += i_pitch - i_visible_pitch;
 612         }
 613 #undef WRITE_UV_CLIP
 614     }
 615     else
 616     {
 617 #define WRITE_UV() \
 618     i_u = *p_in; p_in += 4; i_v = *p_in_v; p_in_v += 4; \
 619     *p_out = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 620                        * i_sat) >> 8) + 128; \
 621     p_out += 4; \
 622     *p_out_v = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 623                        * i_sat) >> 8) + 128; \
 624     p_out_v += 4
 625
 626         uint8_t i_u, i_v;
 627
 628         for( ; p_in < p_in_end ; )
 629         {
 630             p_line_end = p_in + i_visible_pitch - 8 * 4;
 631
 632             for( ; p_in < p_line_end ; )
 633             {
 634                 /* Do 8 pixels at a time */
 635                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 636                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 637             }
 638
 639             p_line_end += 8 * 4;
 640
 641             for( ; p_in < p_line_end ; )
 642             {
 643                 WRITE_UV();
 644             }
 645
 646             p_in += i_pitch - i_visible_pitch;
 647             p_in_v += i_pitch - i_visible_pitch;
 648             p_out += i_pitch - i_visible_pitch;
 649             p_out_v += i_pitch - i_visible_pitch;
 650         }
 651 #undef WRITE_UV
 652     }
 653
 654     p_outpic->date = p_pic->date;
 655     p_outpic->b_force = p_pic->b_force;
 656     p_outpic->i_nb_fields = p_pic->i_nb_fields;
 657     p_outpic->b_progressive = p_pic->b_progressive;
 658     p_outpic->b_top_field_first = p_pic->b_top_field_first;
 659
 660     if( p_pic->pf_release )
 661         p_pic->pf_release( p_pic );
 662
 663     return p_outpic;
 664 }
 665
 666 static int AdjustCallback( vlc_object_t *p_this, char const *psz_var,
 667                            vlc_value_t oldval, vlc_value_t newval,
 668                            void *p_data )
 669 {
 670     VLC_UNUSED(p_this); VLC_UNUSED(oldval);
 671     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 672
 673     if( !strcmp( psz_var, "contrast" ) )
 674         p_sys->f_contrast = newval.f_float;
 675     else if( !strcmp( psz_var, "brightness" ) )
 676         p_sys->f_brightness = newval.f_float;
 677     else if( !strcmp( psz_var, "hue" ) )
 678         p_sys->i_hue = newval.i_int;
 679     else if( !strcmp( psz_var, "saturation" ) )
 680         p_sys->f_saturation = newval.f_float;
 681     else if( !strcmp( psz_var, "gamma" ) )
 682         p_sys->f_gamma = newval.f_float;
 683     else if( !strcmp( psz_var, "brightness-threshold" ) )
 684         p_sys->b_brightness_threshold = newval.b_bool;
 685     else
 686         return VLC_EGENERIC;
 687     return VLC_SUCCESS;
 688 }