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         change_safe();
  85     add_float_with_range( "brightness", 1.0, 0.0, 2.0, NULL,
  86                            LUM_TEXT, LUM_LONGTEXT, VLC_FALSE );
  87         change_safe();
  88     add_integer_with_range( "hue", 0, 0, 360, NULL,
  89                             HUE_TEXT, HUE_LONGTEXT, VLC_FALSE );
  90         change_safe();
  91     add_float_with_range( "saturation", 1.0, 0.0, 3.0, NULL,
  92                           SAT_TEXT, SAT_LONGTEXT, VLC_FALSE );
  93         change_safe();
  94     add_float_with_range( "gamma", 1.0, 0.01, 10.0, NULL,
  95                           GAMMA_TEXT, GAMMA_LONGTEXT, VLC_FALSE );
  96         change_safe();
  97
  98     add_bool( "brightness-threshold", 0, NULL,
  99               THRES_TEXT, THRES_LONGTEXT, VLC_FALSE );
 100         change_safe();
 101
 102     add_shortcut( "adjust" );
 103     set_callbacks( Create, Destroy );
 104 vlc_module_end();
 105
 106 static const char *ppsz_filter_options[] = {
 107     "contrast", "brightness", "hue", "saturation", "gamma",
 108     "brightness-threshold", NULL
 109 };
 110
 111 /*****************************************************************************
 112  * filter_sys_t: adjust filter method descriptor
 113  *****************************************************************************/
 114 struct filter_sys_t
 115 {
 116     double     f_contrast;
 117     double     f_brightness;
 118     int        i_hue;
 119     double     f_saturation;
 120     double     f_gamma;
 121     vlc_bool_t b_brightness_threshold;
 122 };
 123
 124 /*****************************************************************************
 125  * Create: allocates adjust video filter
 126  *****************************************************************************/
 127 static int Create( vlc_object_t *p_this )
 128 {
 129     filter_t *p_filter = (filter_t *)p_this;
 130     filter_sys_t *p_sys;
 131
 132     switch( p_filter->fmt_in.video.i_chroma )
 133     {
 134         CASE_PLANAR_YUV
 135             /* Planar YUV */
 136             p_filter->pf_video_filter = FilterPlanar;
 137             break;
 138
 139         CASE_PACKED_YUV_422
 140             /* Packed YUV 4:2:2 */
 141             p_filter->pf_video_filter = FilterPacked;
 142             break;
 143
 144         default:
 145             msg_Err( p_filter, "Unsupported input chroma (%4s)",
 146                      (char*)&(p_filter->fmt_in.video.i_chroma) );
 147             return VLC_EGENERIC;
 148     }
 149
 150     if( p_filter->fmt_in.video.i_chroma != p_filter->fmt_out.video.i_chroma )
 151     {
 152         msg_Err( p_filter, "Input and output chromas don't match" );
 153         return VLC_EGENERIC;
 154     }
 155
 156     /* Allocate structure */
 157     p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 158     if( p_filter->p_sys == NULL )
 159     {
 160         msg_Err( p_filter, "out of memory" );
 161         return VLC_ENOMEM;
 162     }
 163     p_sys = p_filter->p_sys;
 164
 165     /* needed to get options passed in transcode using the
 166      * adjust{name=value} syntax */
 167     config_ChainParse( p_filter, "", ppsz_filter_options,
 168                    p_filter->p_cfg );
 169
 170     p_sys->f_contrast = var_CreateGetFloatCommand( p_filter, "contrast" );
 171     p_sys->f_brightness = var_CreateGetFloatCommand( p_filter, "brightness" );
 172     p_sys->i_hue = var_CreateGetIntegerCommand( p_filter, "hue" );
 173     p_sys->f_saturation = var_CreateGetFloatCommand( p_filter, "saturation" );
 174     p_sys->f_gamma = var_CreateGetFloatCommand( p_filter, "gamma" );
 175     p_sys->b_brightness_threshold =
 176         var_CreateGetBoolCommand( p_filter, "brightness-threshold" );
 177
 178     var_AddCallback( p_filter, "contrast",   AdjustCallback, p_sys );
 179     var_AddCallback( p_filter, "brightness", AdjustCallback, p_sys );
 180     var_AddCallback( p_filter, "hue",        AdjustCallback, p_sys );
 181     var_AddCallback( p_filter, "saturation", AdjustCallback, p_sys );
 182     var_AddCallback( p_filter, "gamma",      AdjustCallback, p_sys );
 183     var_AddCallback( p_filter, "brightness-threshold",
 184                                              AdjustCallback, p_sys );
 185
 186     return VLC_SUCCESS;
 187 }
 188
 189 /*****************************************************************************
 190  * Destroy: destroy adjust video filter
 191  *****************************************************************************/
 192 static void Destroy( vlc_object_t *p_this )
 193 {
 194     filter_t *p_filter = (filter_t *)p_this;
 195     free( p_filter->p_sys );
 196 }
 197
 198 /*****************************************************************************
 199  * Run the filter on a Planar YUV picture
 200  *****************************************************************************/
 201 static picture_t *FilterPlanar( filter_t *p_filter, picture_t *p_pic )
 202 {
 203     int pi_luma[256];
 204     int pi_gamma[256];
 205
 206     picture_t *p_outpic;
 207     uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
 208     uint8_t *p_out, *p_out_v;
 209
 210     vlc_bool_t b_thres;
 211     double  f_hue;
 212     double  f_gamma;
 213     int32_t i_cont, i_lum;
 214     int i_sat, i_sin, i_cos, i_x, i_y;
 215     int i;
 216
 217     filter_sys_t *p_sys = p_filter->p_sys;
 218
 219     if( !p_pic ) return NULL;
 220
 221     p_outpic = p_filter->pf_vout_buffer_new( p_filter );
 222     if( !p_outpic )
 223     {
 224         msg_Warn( p_filter, "can't get output picture" );
 225         if( p_pic->pf_release )
 226             p_pic->pf_release( p_pic );
 227         return NULL;
 228     }
 229
 230     /* Getvariables */
 231     i_cont = (int)( p_sys->f_contrast * 255 );
 232     i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
 233     f_hue = (float)( p_sys->i_hue * M_PI / 180 );
 234     i_sat = (int)( p_sys->f_saturation * 256 );
 235     f_gamma = 1.0 / p_sys->f_gamma;
 236     b_thres = p_sys->b_brightness_threshold;
 237
 238     /*
 239      * Threshold mode drops out everything about luma, contrast and gamma.
 240      */
 241     if( b_thres != VLC_TRUE )
 242     {
 243
 244         /* Contrast is a fast but kludged function, so I put this gap to be
 245          * cleaner :) */
 246         i_lum += 128 - i_cont / 2;
 247
 248         /* Fill the gamma lookup table */
 249         for( i = 0 ; i < 256 ; i++ )
 250         {
 251           pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
 252         }
 253
 254         /* Fill the luma lookup table */
 255         for( i = 0 ; i < 256 ; i++ )
 256         {
 257             pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
 258         }
 259     }
 260     else
 261     {
 262         /*
 263          * We get luma as threshold value: the higher it is, the darker is
 264          * the image. Should I reverse this?
 265          */
 266         for( i = 0 ; i < 256 ; i++ )
 267         {
 268             pi_luma[ i ] = (i < i_lum) ? 0 : 255;
 269         }
 270
 271         /*
 272          * Desaturates image to avoid that strange yellow halo...
 273          */
 274         i_sat = 0;
 275     }
 276
 277     /*
 278      * Do the Y plane
 279      */
 280
 281     p_in = p_pic->p[Y_PLANE].p_pixels;
 282     p_in_end = p_in + p_pic->p[Y_PLANE].i_visible_lines
 283                       * p_pic->p[Y_PLANE].i_pitch - 8;
 284
 285     p_out = p_outpic->p[Y_PLANE].p_pixels;
 286
 287     for( ; p_in < p_in_end ; )
 288     {
 289         p_line_end = p_in + p_pic->p[Y_PLANE].i_visible_pitch - 8;
 290
 291         for( ; p_in < p_line_end ; )
 292         {
 293             /* Do 8 pixels at a time */
 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             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 298         }
 299
 300         p_line_end += 8;
 301
 302         for( ; p_in < p_line_end ; )
 303         {
 304             *p_out++ = pi_luma[ *p_in++ ];
 305         }
 306
 307         p_in += p_pic->p[Y_PLANE].i_pitch
 308               - p_pic->p[Y_PLANE].i_visible_pitch;
 309         p_out += p_outpic->p[Y_PLANE].i_pitch
 310                - p_outpic->p[Y_PLANE].i_visible_pitch;
 311     }
 312
 313     /*
 314      * Do the U and V planes
 315      */
 316
 317     p_in = p_pic->p[U_PLANE].p_pixels;
 318     p_in_v = p_pic->p[V_PLANE].p_pixels;
 319     p_in_end = p_in + p_pic->p[U_PLANE].i_visible_lines
 320                       * p_pic->p[U_PLANE].i_pitch - 8;
 321
 322     p_out = p_outpic->p[U_PLANE].p_pixels;
 323     p_out_v = p_outpic->p[V_PLANE].p_pixels;
 324
 325     i_sin = sin(f_hue) * 256;
 326     i_cos = cos(f_hue) * 256;
 327
 328     i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
 329     i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
 330
 331     if ( i_sat > 256 )
 332     {
 333 #define WRITE_UV_CLIP() \
 334     i_u = *p_in++ ; i_v = *p_in_v++ ; \
 335     *p_out++ = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 336                            * i_sat) >> 8) + 128); \
 337     *p_out_v++ = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 338                            * i_sat) >> 8) + 128)
 339
 340         uint8_t i_u, i_v;
 341
 342         for( ; p_in < p_in_end ; )
 343         {
 344             p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
 345
 346             for( ; p_in < p_line_end ; )
 347             {
 348                 /* Do 8 pixels at a time */
 349                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 350                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 351                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 352                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 353             }
 354
 355             p_line_end += 8;
 356
 357             for( ; p_in < p_line_end ; )
 358             {
 359                 WRITE_UV_CLIP();
 360             }
 361
 362             p_in += p_pic->p[U_PLANE].i_pitch
 363                   - p_pic->p[U_PLANE].i_visible_pitch;
 364             p_in_v += p_pic->p[V_PLANE].i_pitch
 365                     - p_pic->p[V_PLANE].i_visible_pitch;
 366             p_out += p_outpic->p[U_PLANE].i_pitch
 367                    - p_outpic->p[U_PLANE].i_visible_pitch;
 368             p_out_v += p_outpic->p[V_PLANE].i_pitch
 369                      - p_outpic->p[V_PLANE].i_visible_pitch;
 370         }
 371 #undef WRITE_UV_CLIP
 372     }
 373     else
 374     {
 375 #define WRITE_UV() \
 376     i_u = *p_in++ ; i_v = *p_in_v++ ; \
 377     *p_out++ = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 378                        * i_sat) >> 8) + 128; \
 379     *p_out_v++ = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 380                        * i_sat) >> 8) + 128
 381
 382         uint8_t i_u, i_v;
 383
 384         for( ; p_in < p_in_end ; )
 385         {
 386             p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
 387
 388             for( ; p_in < p_line_end ; )
 389             {
 390                 /* Do 8 pixels at a time */
 391                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 392                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 393             }
 394
 395             p_line_end += 8;
 396
 397             for( ; p_in < p_line_end ; )
 398             {
 399                 WRITE_UV();
 400             }
 401
 402             p_in += p_pic->p[U_PLANE].i_pitch
 403                   - p_pic->p[U_PLANE].i_visible_pitch;
 404             p_in_v += p_pic->p[V_PLANE].i_pitch
 405                     - p_pic->p[V_PLANE].i_visible_pitch;
 406             p_out += p_outpic->p[U_PLANE].i_pitch
 407                    - p_outpic->p[U_PLANE].i_visible_pitch;
 408             p_out_v += p_outpic->p[V_PLANE].i_pitch
 409                      - p_outpic->p[V_PLANE].i_visible_pitch;
 410         }
 411 #undef WRITE_UV
 412     }
 413
 414     p_outpic->date = p_pic->date;
 415     p_outpic->b_force = p_pic->b_force;
 416     p_outpic->i_nb_fields = p_pic->i_nb_fields;
 417     p_outpic->b_progressive = p_pic->b_progressive;
 418     p_outpic->b_top_field_first = p_pic->b_top_field_first;
 419
 420     if( p_pic->pf_release )
 421         p_pic->pf_release( p_pic );
 422
 423     return p_outpic;
 424 }
 425
 426 /*****************************************************************************
 427  * Run the filter on a Packed YUV picture
 428  *****************************************************************************/
 429 static picture_t *FilterPacked( filter_t *p_filter, picture_t *p_pic )
 430 {
 431     int pi_luma[256];
 432     int pi_gamma[256];
 433
 434     picture_t *p_outpic;
 435     uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
 436     uint8_t *p_out, *p_out_v;
 437     int i_y_offset, i_u_offset, i_v_offset;
 438
 439     int i_lines, i_visible_lines, i_pitch, i_visible_pitch;
 440
 441     vlc_bool_t b_thres;
 442     double  f_hue;
 443     double  f_gamma;
 444     int32_t i_cont, i_lum;
 445     int i_sat, i_sin, i_cos, i_x, i_y;
 446     int i;
 447
 448     filter_sys_t *p_sys = p_filter->p_sys;
 449
 450     if( !p_pic ) return NULL;
 451
 452     i_lines = p_pic->p->i_lines;
 453     i_visible_lines = p_pic->p->i_visible_lines;
 454     i_pitch = p_pic->p->i_pitch;
 455     i_visible_pitch = p_pic->p->i_visible_pitch;
 456
 457     if( GetPackedYuvOffsets( p_pic->format.i_chroma, &i_y_offset,
 458                              &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 459     {
 460         msg_Warn( p_filter, "Unsupported input chroma (%4s)",
 461                   (char*)&(p_pic->format.i_chroma) );
 462         if( p_pic->pf_release )
 463             p_pic->pf_release( p_pic );
 464         return NULL;
 465     }
 466
 467     p_outpic = p_filter->pf_vout_buffer_new( p_filter );
 468     if( !p_outpic )
 469     {
 470         msg_Warn( p_filter, "can't get output picture" );
 471         if( p_pic->pf_release )
 472             p_pic->pf_release( p_pic );
 473         return NULL;
 474     }
 475
 476     /* Getvariables */
 477     i_cont = (int)( p_sys->f_contrast * 255 );
 478     i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
 479     f_hue = (float)( p_sys->i_hue * M_PI / 180 );
 480     i_sat = (int)( p_sys->f_saturation * 256 );
 481     f_gamma = 1.0 / p_sys->f_gamma;
 482     b_thres = p_sys->b_brightness_threshold;
 483
 484     /*
 485      * Threshold mode drops out everything about luma, contrast and gamma.
 486      */
 487     if( b_thres != VLC_TRUE )
 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     p_outpic->date = p_pic->date;
 657     p_outpic->b_force = p_pic->b_force;
 658     p_outpic->i_nb_fields = p_pic->i_nb_fields;
 659     p_outpic->b_progressive = p_pic->b_progressive;
 660     p_outpic->b_top_field_first = p_pic->b_top_field_first;
 661
 662     if( p_pic->pf_release )
 663         p_pic->pf_release( p_pic );
 664
 665     return p_outpic;
 666 }
 667
 668 static int AdjustCallback( vlc_object_t *p_this, char const *psz_var,
 669                            vlc_value_t oldval, vlc_value_t newval,
 670                            void *p_data )
 671 {
 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 }