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_common.h>
  36 #include <vlc_plugin.h>
  37 #include <vlc_sout.h>
  38 #include <vlc_vout.h>
  39
  40 #include "vlc_filter.h"
  41 #include "filter_picture.h"
  42
  43 #ifndef M_PI
  44 #   define M_PI 3.14159265358979323846
  45 #endif
  46
  47 #define eight_times( x )    x x x x x x x x
  48
  49 /*****************************************************************************
  50  * Local prototypes
  51  *****************************************************************************/
  52 static int  Create    ( vlc_object_t * );
  53 static void Destroy   ( vlc_object_t * );
  54
  55 static picture_t *FilterPlanar( filter_t *, picture_t * );
  56 static picture_t *FilterPacked( filter_t *, picture_t * );
  57 static int AdjustCallback( vlc_object_t *p_this, char const *psz_var,
  58                            vlc_value_t oldval, vlc_value_t newval,
  59                            void *p_data );
  60
  61 /*****************************************************************************
  62  * Module descriptor
  63  *****************************************************************************/
  64
  65 #define THRES_TEXT N_("Brightness threshold")
  66 #define THRES_LONGTEXT N_("When this mode is enabled, pixels will be " \
  67         "shown as black or white. The threshold value will be the brighness " \
  68         "defined below." )
  69 #define CONT_TEXT N_("Image contrast (0-2)")
  70 #define CONT_LONGTEXT N_("Set the image contrast, between 0 and 2. Defaults to 1.")
  71 #define HUE_TEXT N_("Image hue (0-360)")
  72 #define HUE_LONGTEXT N_("Set the image hue, between 0 and 360. Defaults to 0.")
  73 #define SAT_TEXT N_("Image saturation (0-3)")
  74 #define SAT_LONGTEXT N_("Set the image saturation, between 0 and 3. Defaults to 1.")
  75 #define LUM_TEXT N_("Image brightness (0-2)")
  76 #define LUM_LONGTEXT N_("Set the image brightness, between 0 and 2. Defaults to 1.")
  77 #define GAMMA_TEXT N_("Image gamma (0-10)")
  78 #define GAMMA_LONGTEXT N_("Set the image gamma, between 0.01 and 10. Defaults to 1.")
  79
  80 vlc_module_begin();
  81     set_description( N_("Image properties filter") );
  82     set_shortname( N_("Image adjust" ));
  83     set_category( CAT_VIDEO );
  84     set_subcategory( SUBCAT_VIDEO_VFILTER );
  85     set_capability( "video filter2", 0 );
  86
  87     add_float_with_range( "contrast", 1.0, 0.0, 2.0, NULL,
  88                           CONT_TEXT, CONT_LONGTEXT, false );
  89     add_float_with_range( "brightness", 1.0, 0.0, 2.0, NULL,
  90                            LUM_TEXT, LUM_LONGTEXT, false );
  91     add_integer_with_range( "hue", 0, 0, 360, NULL,
  92                             HUE_TEXT, HUE_LONGTEXT, false );
  93     add_float_with_range( "saturation", 1.0, 0.0, 3.0, NULL,
  94                           SAT_TEXT, SAT_LONGTEXT, false );
  95     add_float_with_range( "gamma", 1.0, 0.01, 10.0, NULL,
  96                           GAMMA_TEXT, GAMMA_LONGTEXT, false );
  97
  98     add_bool( "brightness-threshold", 0, NULL,
  99               THRES_TEXT, THRES_LONGTEXT, false );
 100
 101     add_shortcut( "adjust" );
 102     set_callbacks( Create, Destroy );
 103 vlc_module_end();
 104
 105 static const char *const ppsz_filter_options[] = {
 106     "contrast", "brightness", "hue", "saturation", "gamma",
 107     "brightness-threshold", NULL
 108 };
 109
 110 /*****************************************************************************
 111  * filter_sys_t: adjust filter method descriptor
 112  *****************************************************************************/
 113 struct filter_sys_t
 114 {
 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 (%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     {
 159         msg_Err( p_filter, "out of memory" );
 160         return VLC_ENOMEM;
 161     }
 162     p_sys = p_filter->p_sys;
 163
 164     /* needed to get options passed in transcode using the
 165      * adjust{name=value} syntax */
 166     config_ChainParse( p_filter, "", ppsz_filter_options,
 167                    p_filter->p_cfg );
 168
 169     p_sys->f_contrast = var_CreateGetFloatCommand( p_filter, "contrast" );
 170     p_sys->f_brightness = var_CreateGetFloatCommand( p_filter, "brightness" );
 171     p_sys->i_hue = var_CreateGetIntegerCommand( p_filter, "hue" );
 172     p_sys->f_saturation = var_CreateGetFloatCommand( p_filter, "saturation" );
 173     p_sys->f_gamma = var_CreateGetFloatCommand( p_filter, "gamma" );
 174     p_sys->b_brightness_threshold =
 175         var_CreateGetBoolCommand( p_filter, "brightness-threshold" );
 176
 177     var_AddCallback( p_filter, "contrast",   AdjustCallback, p_sys );
 178     var_AddCallback( p_filter, "brightness", AdjustCallback, p_sys );
 179     var_AddCallback( p_filter, "hue",        AdjustCallback, p_sys );
 180     var_AddCallback( p_filter, "saturation", AdjustCallback, p_sys );
 181     var_AddCallback( p_filter, "gamma",      AdjustCallback, p_sys );
 182     var_AddCallback( p_filter, "brightness-threshold",
 183                                              AdjustCallback, p_sys );
 184
 185     return VLC_SUCCESS;
 186 }
 187
 188 /*****************************************************************************
 189  * Destroy: destroy adjust video filter
 190  *****************************************************************************/
 191 static void Destroy( vlc_object_t *p_this )
 192 {
 193     filter_t *p_filter = (filter_t *)p_this;
 194     free( p_filter->p_sys );
 195 }
 196
 197 /*****************************************************************************
 198  * Run the filter on a Planar YUV picture
 199  *****************************************************************************/
 200 static picture_t *FilterPlanar( filter_t *p_filter, picture_t *p_pic )
 201 {
 202     int pi_luma[256];
 203     int pi_gamma[256];
 204
 205     picture_t *p_outpic;
 206     uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
 207     uint8_t *p_out, *p_out_v;
 208
 209     bool b_thres;
 210     double  f_hue;
 211     double  f_gamma;
 212     int32_t i_cont, i_lum;
 213     int i_sat, i_sin, i_cos, i_x, i_y;
 214     int i;
 215
 216     filter_sys_t *p_sys = p_filter->p_sys;
 217
 218     if( !p_pic ) return NULL;
 219
 220     p_outpic = p_filter->pf_vout_buffer_new( p_filter );
 221     if( !p_outpic )
 222     {
 223         msg_Warn( p_filter, "can't get output picture" );
 224         if( p_pic->pf_release )
 225             p_pic->pf_release( p_pic );
 226         return NULL;
 227     }
 228
 229     /* Getvariables */
 230     i_cont = (int)( p_sys->f_contrast * 255 );
 231     i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
 232     f_hue = (float)( p_sys->i_hue * M_PI / 180 );
 233     i_sat = (int)( p_sys->f_saturation * 256 );
 234     f_gamma = 1.0 / p_sys->f_gamma;
 235     b_thres = p_sys->b_brightness_threshold;
 236
 237     /*
 238      * Threshold mode drops out everything about luma, contrast and gamma.
 239      */
 240     if( b_thres != true )
 241     {
 242
 243         /* Contrast is a fast but kludged function, so I put this gap to be
 244          * cleaner :) */
 245         i_lum += 128 - i_cont / 2;
 246
 247         /* Fill the gamma lookup table */
 248         for( i = 0 ; i < 256 ; i++ )
 249         {
 250           pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
 251         }
 252
 253         /* Fill the luma lookup table */
 254         for( i = 0 ; i < 256 ; i++ )
 255         {
 256             pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
 257         }
 258     }
 259     else
 260     {
 261         /*
 262          * We get luma as threshold value: the higher it is, the darker is
 263          * the image. Should I reverse this?
 264          */
 265         for( i = 0 ; i < 256 ; i++ )
 266         {
 267             pi_luma[ i ] = (i < i_lum) ? 0 : 255;
 268         }
 269
 270         /*
 271          * Desaturates image to avoid that strange yellow halo...
 272          */
 273         i_sat = 0;
 274     }
 275
 276     /*
 277      * Do the Y plane
 278      */
 279
 280     p_in = p_pic->p[Y_PLANE].p_pixels;
 281     p_in_end = p_in + p_pic->p[Y_PLANE].i_visible_lines
 282                       * p_pic->p[Y_PLANE].i_pitch - 8;
 283
 284     p_out = p_outpic->p[Y_PLANE].p_pixels;
 285
 286     for( ; p_in < p_in_end ; )
 287     {
 288         p_line_end = p_in + p_pic->p[Y_PLANE].i_visible_pitch - 8;
 289
 290         for( ; p_in < p_line_end ; )
 291         {
 292             /* Do 8 pixels at a time */
 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             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 297         }
 298
 299         p_line_end += 8;
 300
 301         for( ; p_in < p_line_end ; )
 302         {
 303             *p_out++ = pi_luma[ *p_in++ ];
 304         }
 305
 306         p_in += p_pic->p[Y_PLANE].i_pitch
 307               - p_pic->p[Y_PLANE].i_visible_pitch;
 308         p_out += p_outpic->p[Y_PLANE].i_pitch
 309                - p_outpic->p[Y_PLANE].i_visible_pitch;
 310     }
 311
 312     /*
 313      * Do the U and V planes
 314      */
 315
 316     p_in = p_pic->p[U_PLANE].p_pixels;
 317     p_in_v = p_pic->p[V_PLANE].p_pixels;
 318     p_in_end = p_in + p_pic->p[U_PLANE].i_visible_lines
 319                       * p_pic->p[U_PLANE].i_pitch - 8;
 320
 321     p_out = p_outpic->p[U_PLANE].p_pixels;
 322     p_out_v = p_outpic->p[V_PLANE].p_pixels;
 323
 324     i_sin = sin(f_hue) * 256;
 325     i_cos = cos(f_hue) * 256;
 326
 327     i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
 328     i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
 329
 330     if ( i_sat > 256 )
 331     {
 332 #define WRITE_UV_CLIP() \
 333     i_u = *p_in++ ; i_v = *p_in_v++ ; \
 334     *p_out++ = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 335                            * i_sat) >> 8) + 128); \
 336     *p_out_v++ = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 337                            * i_sat) >> 8) + 128)
 338
 339         uint8_t i_u, i_v;
 340
 341         for( ; p_in < p_in_end ; )
 342         {
 343             p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
 344
 345             for( ; p_in < p_line_end ; )
 346             {
 347                 /* Do 8 pixels at a time */
 348                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 349                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 350                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 351                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 352             }
 353
 354             p_line_end += 8;
 355
 356             for( ; p_in < p_line_end ; )
 357             {
 358                 WRITE_UV_CLIP();
 359             }
 360
 361             p_in += p_pic->p[U_PLANE].i_pitch
 362                   - p_pic->p[U_PLANE].i_visible_pitch;
 363             p_in_v += p_pic->p[V_PLANE].i_pitch
 364                     - p_pic->p[V_PLANE].i_visible_pitch;
 365             p_out += p_outpic->p[U_PLANE].i_pitch
 366                    - p_outpic->p[U_PLANE].i_visible_pitch;
 367             p_out_v += p_outpic->p[V_PLANE].i_pitch
 368                      - p_outpic->p[V_PLANE].i_visible_pitch;
 369         }
 370 #undef WRITE_UV_CLIP
 371     }
 372     else
 373     {
 374 #define WRITE_UV() \
 375     i_u = *p_in++ ; i_v = *p_in_v++ ; \
 376     *p_out++ = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 377                        * i_sat) >> 8) + 128; \
 378     *p_out_v++ = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 379                        * i_sat) >> 8) + 128
 380
 381         uint8_t i_u, i_v;
 382
 383         for( ; p_in < p_in_end ; )
 384         {
 385             p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
 386
 387             for( ; p_in < p_line_end ; )
 388             {
 389                 /* Do 8 pixels at a time */
 390                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 391                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 392             }
 393
 394             p_line_end += 8;
 395
 396             for( ; p_in < p_line_end ; )
 397             {
 398                 WRITE_UV();
 399             }
 400
 401             p_in += p_pic->p[U_PLANE].i_pitch
 402                   - p_pic->p[U_PLANE].i_visible_pitch;
 403             p_in_v += p_pic->p[V_PLANE].i_pitch
 404                     - p_pic->p[V_PLANE].i_visible_pitch;
 405             p_out += p_outpic->p[U_PLANE].i_pitch
 406                    - p_outpic->p[U_PLANE].i_visible_pitch;
 407             p_out_v += p_outpic->p[V_PLANE].i_pitch
 408                      - p_outpic->p[V_PLANE].i_visible_pitch;
 409         }
 410 #undef WRITE_UV
 411     }
 412
 413     p_outpic->date = p_pic->date;
 414     p_outpic->b_force = p_pic->b_force;
 415     p_outpic->i_nb_fields = p_pic->i_nb_fields;
 416     p_outpic->b_progressive = p_pic->b_progressive;
 417     p_outpic->b_top_field_first = p_pic->b_top_field_first;
 418
 419     if( p_pic->pf_release )
 420         p_pic->pf_release( p_pic );
 421
 422     return p_outpic;
 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_lines, 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_lines = p_pic->p->i_lines;
 452     i_visible_lines = p_pic->p->i_visible_lines;
 453     i_pitch = p_pic->p->i_pitch;
 454     i_visible_pitch = p_pic->p->i_visible_pitch;
 455
 456     if( GetPackedYuvOffsets( p_pic->format.i_chroma, &i_y_offset,
 457                              &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 458     {
 459         msg_Warn( p_filter, "Unsupported input chroma (%4s)",
 460                   (char*)&(p_pic->format.i_chroma) );
 461         if( p_pic->pf_release )
 462             p_pic->pf_release( p_pic );
 463         return NULL;
 464     }
 465
 466     p_outpic = p_filter->pf_vout_buffer_new( p_filter );
 467     if( !p_outpic )
 468     {
 469         msg_Warn( p_filter, "can't get output picture" );
 470         if( p_pic->pf_release )
 471             p_pic->pf_release( p_pic );
 472         return NULL;
 473     }
 474
 475     /* Getvariables */
 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
 483     /*
 484      * Threshold mode drops out everything about luma, contrast and gamma.
 485      */
 486     if( b_thres != true )
 487     {
 488
 489         /* Contrast is a fast but kludged function, so I put this gap to be
 490          * cleaner :) */
 491         i_lum += 128 - i_cont / 2;
 492
 493         /* Fill the gamma lookup table */
 494         for( i = 0 ; i < 256 ; i++ )
 495         {
 496           pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
 497         }
 498
 499         /* Fill the luma lookup table */
 500         for( i = 0 ; i < 256 ; i++ )
 501         {
 502             pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
 503         }
 504     }
 505     else
 506     {
 507         /*
 508          * We get luma as threshold value: the higher it is, the darker is
 509          * the image. Should I reverse this?
 510          */
 511         for( i = 0 ; i < 256 ; i++ )
 512         {
 513             pi_luma[ i ] = (i < i_lum) ? 0 : 255;
 514         }
 515
 516         /*
 517          * Desaturates image to avoid that strange yellow halo...
 518          */
 519         i_sat = 0;
 520     }
 521
 522     /*
 523      * Do the Y plane
 524      */
 525
 526     p_in = p_pic->p->p_pixels + i_y_offset;
 527     p_in_end = p_in + p_pic->p->i_visible_lines * p_pic->p->i_pitch - 8 * 4;
 528
 529     p_out = p_outpic->p->p_pixels + i_y_offset;
 530
 531     for( ; p_in < p_in_end ; )
 532     {
 533         p_line_end = p_in + i_visible_pitch - 8 * 4;
 534
 535         for( ; p_in < p_line_end ; )
 536         {
 537             /* Do 8 pixels at a time */
 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             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 546         }
 547
 548         p_line_end += 8 * 4;
 549
 550         for( ; p_in < p_line_end ; )
 551         {
 552             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 553         }
 554
 555         p_in += i_pitch - p_pic->p->i_visible_pitch;
 556         p_out += i_pitch - p_outpic->p->i_visible_pitch;
 557     }
 558
 559     /*
 560      * Do the U and V planes
 561      */
 562
 563     p_in = p_pic->p->p_pixels + i_u_offset;
 564     p_in_v = p_pic->p->p_pixels + i_v_offset;
 565     p_in_end = p_in + i_visible_lines * i_pitch - 8 * 4;
 566
 567     p_out = p_outpic->p->p_pixels + i_u_offset;
 568     p_out_v = p_outpic->p->p_pixels + i_v_offset;
 569
 570     i_sin = sin(f_hue) * 256;
 571     i_cos = cos(f_hue) * 256;
 572
 573     i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
 574     i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
 575
 576     if ( i_sat > 256 )
 577     {
 578 #define WRITE_UV_CLIP() \
 579     i_u = *p_in; p_in += 4; i_v = *p_in_v; p_in_v += 4; \
 580     *p_out = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 581                            * i_sat) >> 8) + 128); \
 582     p_out += 4; \
 583     *p_out_v = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 584                            * i_sat) >> 8) + 128); \
 585     p_out_v += 4
 586
 587         uint8_t i_u, i_v;
 588
 589         for( ; p_in < p_in_end ; )
 590         {
 591             p_line_end = p_in + i_visible_pitch - 8 * 4;
 592
 593             for( ; p_in < p_line_end ; )
 594             {
 595                 /* Do 8 pixels at a time */
 596                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 597                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 598                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 599                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 600             }
 601
 602             p_line_end += 8 * 4;
 603
 604             for( ; p_in < p_line_end ; )
 605             {
 606                 WRITE_UV_CLIP();
 607             }
 608
 609             p_in += i_pitch - i_visible_pitch;
 610             p_in_v += i_pitch - i_visible_pitch;
 611             p_out += i_pitch - i_visible_pitch;
 612             p_out_v += i_pitch - i_visible_pitch;
 613         }
 614 #undef WRITE_UV_CLIP
 615     }
 616     else
 617     {
 618 #define WRITE_UV() \
 619     i_u = *p_in; p_in += 4; i_v = *p_in_v; p_in_v += 4; \
 620     *p_out = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 621                        * i_sat) >> 8) + 128; \
 622     p_out += 4; \
 623     *p_out_v = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 624                        * i_sat) >> 8) + 128; \
 625     p_out_v += 4
 626
 627         uint8_t i_u, i_v;
 628
 629         for( ; p_in < p_in_end ; )
 630         {
 631             p_line_end = p_in + i_visible_pitch - 8 * 4;
 632
 633             for( ; p_in < p_line_end ; )
 634             {
 635                 /* Do 8 pixels at a time */
 636                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 637                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 638             }
 639
 640             p_line_end += 8 * 4;
 641
 642             for( ; p_in < p_line_end ; )
 643             {
 644                 WRITE_UV();
 645             }
 646
 647             p_in += i_pitch - i_visible_pitch;
 648             p_in_v += i_pitch - i_visible_pitch;
 649             p_out += i_pitch - i_visible_pitch;
 650             p_out_v += i_pitch - i_visible_pitch;
 651         }
 652 #undef WRITE_UV
 653     }
 654
 655     p_outpic->date = p_pic->date;
 656     p_outpic->b_force = p_pic->b_force;
 657     p_outpic->i_nb_fields = p_pic->i_nb_fields;
 658     p_outpic->b_progressive = p_pic->b_progressive;
 659     p_outpic->b_top_field_first = p_pic->b_top_field_first;
 660
 661     if( p_pic->pf_release )
 662         p_pic->pf_release( p_pic );
 663
 664     return p_outpic;
 665 }
 666
 667 static int AdjustCallback( vlc_object_t *p_this, char const *psz_var,
 668                            vlc_value_t oldval, vlc_value_t newval,
 669                            void *p_data )
 670 {
 671     VLC_UNUSED(p_this); VLC_UNUSED(oldval);
 672     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 673
 674     if( !strcmp( psz_var, "contrast" ) )
 675         p_sys->f_contrast = newval.f_float;
 676     else if( !strcmp( psz_var, "brightness" ) )
 677         p_sys->f_brightness = newval.f_float;
 678     else if( !strcmp( psz_var, "hue" ) )
 679         p_sys->i_hue = newval.i_int;
 680     else if( !strcmp( psz_var, "saturation" ) )
 681         p_sys->f_saturation = newval.f_float;
 682     else if( !strcmp( psz_var, "gamma" ) )
 683         p_sys->f_gamma = newval.f_float;
 684     else if( !strcmp( psz_var, "brightness-threshold" ) )
 685         p_sys->b_brightness_threshold = newval.b_bool;
 686     else
 687         return VLC_EGENERIC;
 688     return VLC_SUCCESS;
 689 }