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

   1 /*****************************************************************************
   2  * adjust.c : Contrast/Hue/Saturation/Brightness video plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2000-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Simon Latapie <garf@via.ecp.fr>
   8  *          Antoine Cellerier <dionoea -at- videolan d0t org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <errno.h>
  34 #include <math.h>
  35
  36 #include <vlc_common.h>
  37 #include <vlc_plugin.h>
  38 #include <vlc_sout.h>
  39 #include <vlc_vout.h>
  40
  41 #include "vlc_filter.h"
  42 #include "filter_picture.h"
  43
  44 #ifndef M_PI
  45 #   define M_PI 3.14159265358979323846
  46 #endif
  47
  48 #define eight_times( x )    x x x x x x x x
  49
  50 /*****************************************************************************
  51  * Local prototypes
  52  *****************************************************************************/
  53 static int  Create    ( vlc_object_t * );
  54 static void Destroy   ( vlc_object_t * );
  55
  56 static picture_t *FilterPlanar( filter_t *, picture_t * );
  57 static picture_t *FilterPacked( filter_t *, picture_t * );
  58 static int AdjustCallback( vlc_object_t *p_this, char const *psz_var,
  59                            vlc_value_t oldval, vlc_value_t newval,
  60                            void *p_data );
  61
  62 /*****************************************************************************
  63  * Module descriptor
  64  *****************************************************************************/
  65
  66 #define THRES_TEXT N_("Brightness threshold")
  67 #define THRES_LONGTEXT N_("When this mode is enabled, pixels will be " \
  68         "shown as black or white. The threshold value will be the brighness " \
  69         "defined below." )
  70 #define CONT_TEXT N_("Image contrast (0-2)")
  71 #define CONT_LONGTEXT N_("Set the image contrast, between 0 and 2. Defaults to 1.")
  72 #define HUE_TEXT N_("Image hue (0-360)")
  73 #define HUE_LONGTEXT N_("Set the image hue, between 0 and 360. Defaults to 0.")
  74 #define SAT_TEXT N_("Image saturation (0-3)")
  75 #define SAT_LONGTEXT N_("Set the image saturation, between 0 and 3. Defaults to 1.")
  76 #define LUM_TEXT N_("Image brightness (0-2)")
  77 #define LUM_LONGTEXT N_("Set the image brightness, between 0 and 2. Defaults to 1.")
  78 #define GAMMA_TEXT N_("Image gamma (0-10)")
  79 #define GAMMA_LONGTEXT N_("Set the image gamma, between 0.01 and 10. Defaults to 1.")
  80
  81 vlc_module_begin ()
  82     set_description( N_("Image properties filter") )
  83     set_shortname( N_("Image adjust" ))
  84     set_category( CAT_VIDEO )
  85     set_subcategory( SUBCAT_VIDEO_VFILTER )
  86     set_capability( "video filter2", 0 )
  87
  88     add_float_with_range( "contrast", 1.0, 0.0, 2.0, NULL,
  89                           CONT_TEXT, CONT_LONGTEXT, false )
  90     add_float_with_range( "brightness", 1.0, 0.0, 2.0, NULL,
  91                            LUM_TEXT, LUM_LONGTEXT, false )
  92     add_integer_with_range( "hue", 0, 0, 360, NULL,
  93                             HUE_TEXT, HUE_LONGTEXT, false )
  94     add_float_with_range( "saturation", 1.0, 0.0, 3.0, NULL,
  95                           SAT_TEXT, SAT_LONGTEXT, false )
  96     add_float_with_range( "gamma", 1.0, 0.01, 10.0, NULL,
  97                           GAMMA_TEXT, GAMMA_LONGTEXT, false )
  98
  99     add_bool( "brightness-threshold", 0, NULL,
 100               THRES_TEXT, THRES_LONGTEXT, false )
 101
 102     add_shortcut( "adjust" )
 103     set_callbacks( Create, Destroy )
 104 vlc_module_end ()
 105
 106 static const char *const 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     vlc_mutex_t lock;
 117     double     f_contrast;
 118     double     f_brightness;
 119     int        i_hue;
 120     double     f_saturation;
 121     double     f_gamma;
 122     bool b_brightness_threshold;
 123 };
 124
 125 /*****************************************************************************
 126  * Create: allocates adjust video filter
 127  *****************************************************************************/
 128 static int Create( vlc_object_t *p_this )
 129 {
 130     filter_t *p_filter = (filter_t *)p_this;
 131     filter_sys_t *p_sys;
 132
 133     switch( p_filter->fmt_in.video.i_chroma )
 134     {
 135         CASE_PLANAR_YUV
 136             /* Planar YUV */
 137             p_filter->pf_video_filter = FilterPlanar;
 138             break;
 139
 140         CASE_PACKED_YUV_422
 141             /* Packed YUV 4:2:2 */
 142             p_filter->pf_video_filter = FilterPacked;
 143             break;
 144
 145         default:
 146             msg_Err( p_filter, "Unsupported input chroma (%4s)",
 147                      (char*)&(p_filter->fmt_in.video.i_chroma) );
 148             return VLC_EGENERIC;
 149     }
 150
 151     if( p_filter->fmt_in.video.i_chroma != p_filter->fmt_out.video.i_chroma )
 152     {
 153         msg_Err( p_filter, "Input and output chromas don't match" );
 154         return VLC_EGENERIC;
 155     }
 156
 157     /* Allocate structure */
 158     p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 159     if( p_filter->p_sys == NULL )
 160         return VLC_ENOMEM;
 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     vlc_mutex_init( &p_sys->lock );
 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     filter_sys_t *p_sys = p_filter->p_sys;
 195
 196     var_DelCallback( p_filter, "contrast",   AdjustCallback, p_sys );
 197     var_DelCallback( p_filter, "brightness", AdjustCallback, p_sys );
 198     var_DelCallback( p_filter, "hue",        AdjustCallback, p_sys );
 199     var_DelCallback( p_filter, "saturation", AdjustCallback, p_sys );
 200     var_DelCallback( p_filter, "gamma",      AdjustCallback, p_sys );
 201     var_DelCallback( p_filter, "brightness-threshold",
 202                                              AdjustCallback, p_sys );
 203
 204     vlc_mutex_destroy( &p_sys->lock );
 205     free( p_sys );
 206 }
 207
 208 /*****************************************************************************
 209  * Run the filter on a Planar YUV picture
 210  *****************************************************************************/
 211 static picture_t *FilterPlanar( filter_t *p_filter, picture_t *p_pic )
 212 {
 213     int pi_luma[256];
 214     int pi_gamma[256];
 215
 216     picture_t *p_outpic;
 217     uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
 218     uint8_t *p_out, *p_out_v;
 219
 220     bool b_thres;
 221     double  f_hue;
 222     double  f_gamma;
 223     int32_t i_cont, i_lum;
 224     int i_sat, i_sin, i_cos, i_x, i_y;
 225     int i;
 226
 227     filter_sys_t *p_sys = p_filter->p_sys;
 228
 229     if( !p_pic ) return NULL;
 230
 231     p_outpic = filter_NewPicture( p_filter );
 232     if( !p_outpic )
 233     {
 234         picture_Release( p_pic );
 235         return NULL;
 236     }
 237
 238     /* Get variables */
 239     vlc_mutex_lock( &p_sys->lock );
 240     i_cont = (int)( p_sys->f_contrast * 255 );
 241     i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
 242     f_hue = (float)( p_sys->i_hue * M_PI / 180 );
 243     i_sat = (int)( p_sys->f_saturation * 256 );
 244     f_gamma = 1.0 / p_sys->f_gamma;
 245     b_thres = p_sys->b_brightness_threshold;
 246     vlc_mutex_unlock( &p_sys->lock );
 247
 248     /*
 249      * Threshold mode drops out everything about luma, contrast and gamma.
 250      */
 251     if( b_thres != true )
 252     {
 253
 254         /* Contrast is a fast but kludged function, so I put this gap to be
 255          * cleaner :) */
 256         i_lum += 128 - i_cont / 2;
 257
 258         /* Fill the gamma lookup table */
 259         for( i = 0 ; i < 256 ; i++ )
 260         {
 261           pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
 262         }
 263
 264         /* Fill the luma lookup table */
 265         for( i = 0 ; i < 256 ; i++ )
 266         {
 267             pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
 268         }
 269     }
 270     else
 271     {
 272         /*
 273          * We get luma as threshold value: the higher it is, the darker is
 274          * the image. Should I reverse this?
 275          */
 276         for( i = 0 ; i < 256 ; i++ )
 277         {
 278             pi_luma[ i ] = (i < i_lum) ? 0 : 255;
 279         }
 280
 281         /*
 282          * Desaturates image to avoid that strange yellow halo...
 283          */
 284         i_sat = 0;
 285     }
 286
 287     /*
 288      * Do the Y plane
 289      */
 290
 291     p_in = p_pic->p[Y_PLANE].p_pixels;
 292     p_in_end = p_in + p_pic->p[Y_PLANE].i_visible_lines
 293                       * p_pic->p[Y_PLANE].i_pitch - 8;
 294
 295     p_out = p_outpic->p[Y_PLANE].p_pixels;
 296
 297     for( ; p_in < p_in_end ; )
 298     {
 299         p_line_end = p_in + p_pic->p[Y_PLANE].i_visible_pitch - 8;
 300
 301         for( ; p_in < p_line_end ; )
 302         {
 303             /* Do 8 pixels at a time */
 304             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 305             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 306             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 307             *p_out++ = pi_luma[ *p_in++ ]; *p_out++ = pi_luma[ *p_in++ ];
 308         }
 309
 310         p_line_end += 8;
 311
 312         for( ; p_in < p_line_end ; )
 313         {
 314             *p_out++ = pi_luma[ *p_in++ ];
 315         }
 316
 317         p_in += p_pic->p[Y_PLANE].i_pitch
 318               - p_pic->p[Y_PLANE].i_visible_pitch;
 319         p_out += p_outpic->p[Y_PLANE].i_pitch
 320                - p_outpic->p[Y_PLANE].i_visible_pitch;
 321     }
 322
 323     /*
 324      * Do the U and V planes
 325      */
 326
 327     p_in = p_pic->p[U_PLANE].p_pixels;
 328     p_in_v = p_pic->p[V_PLANE].p_pixels;
 329     p_in_end = p_in + p_pic->p[U_PLANE].i_visible_lines
 330                       * p_pic->p[U_PLANE].i_pitch - 8;
 331
 332     p_out = p_outpic->p[U_PLANE].p_pixels;
 333     p_out_v = p_outpic->p[V_PLANE].p_pixels;
 334
 335     i_sin = sin(f_hue) * 256;
 336     i_cos = cos(f_hue) * 256;
 337
 338     i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
 339     i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
 340
 341     if ( i_sat > 256 )
 342     {
 343 #define WRITE_UV_CLIP() \
 344     i_u = *p_in++ ; i_v = *p_in_v++ ; \
 345     *p_out++ = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 346                            * i_sat) >> 8) + 128); \
 347     *p_out_v++ = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 348                            * i_sat) >> 8) + 128)
 349
 350         uint8_t i_u, i_v;
 351
 352         for( ; p_in < p_in_end ; )
 353         {
 354             p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
 355
 356             for( ; p_in < p_line_end ; )
 357             {
 358                 /* Do 8 pixels at a time */
 359                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 360                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 361                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 362                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 363             }
 364
 365             p_line_end += 8;
 366
 367             for( ; p_in < p_line_end ; )
 368             {
 369                 WRITE_UV_CLIP();
 370             }
 371
 372             p_in += p_pic->p[U_PLANE].i_pitch
 373                   - p_pic->p[U_PLANE].i_visible_pitch;
 374             p_in_v += p_pic->p[V_PLANE].i_pitch
 375                     - p_pic->p[V_PLANE].i_visible_pitch;
 376             p_out += p_outpic->p[U_PLANE].i_pitch
 377                    - p_outpic->p[U_PLANE].i_visible_pitch;
 378             p_out_v += p_outpic->p[V_PLANE].i_pitch
 379                      - p_outpic->p[V_PLANE].i_visible_pitch;
 380         }
 381 #undef WRITE_UV_CLIP
 382     }
 383     else
 384     {
 385 #define WRITE_UV() \
 386     i_u = *p_in++ ; i_v = *p_in_v++ ; \
 387     *p_out++ = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 388                        * i_sat) >> 8) + 128; \
 389     *p_out_v++ = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 390                        * i_sat) >> 8) + 128
 391
 392         uint8_t i_u, i_v;
 393
 394         for( ; p_in < p_in_end ; )
 395         {
 396             p_line_end = p_in + p_pic->p[U_PLANE].i_visible_pitch - 8;
 397
 398             for( ; p_in < p_line_end ; )
 399             {
 400                 /* Do 8 pixels at a time */
 401                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 402                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 403             }
 404
 405             p_line_end += 8;
 406
 407             for( ; p_in < p_line_end ; )
 408             {
 409                 WRITE_UV();
 410             }
 411
 412             p_in += p_pic->p[U_PLANE].i_pitch
 413                   - p_pic->p[U_PLANE].i_visible_pitch;
 414             p_in_v += p_pic->p[V_PLANE].i_pitch
 415                     - p_pic->p[V_PLANE].i_visible_pitch;
 416             p_out += p_outpic->p[U_PLANE].i_pitch
 417                    - p_outpic->p[U_PLANE].i_visible_pitch;
 418             p_out_v += p_outpic->p[V_PLANE].i_pitch
 419                      - p_outpic->p[V_PLANE].i_visible_pitch;
 420         }
 421 #undef WRITE_UV
 422     }
 423
 424     return CopyInfoAndRelease( p_outpic, p_pic );
 425 }
 426
 427 /*****************************************************************************
 428  * Run the filter on a Packed YUV picture
 429  *****************************************************************************/
 430 static picture_t *FilterPacked( filter_t *p_filter, picture_t *p_pic )
 431 {
 432     int pi_luma[256];
 433     int pi_gamma[256];
 434
 435     picture_t *p_outpic;
 436     uint8_t *p_in, *p_in_v, *p_in_end, *p_line_end;
 437     uint8_t *p_out, *p_out_v;
 438     int i_y_offset, i_u_offset, i_v_offset;
 439
 440     int i_lines, i_visible_lines, i_pitch, i_visible_pitch;
 441
 442     bool b_thres;
 443     double  f_hue;
 444     double  f_gamma;
 445     int32_t i_cont, i_lum;
 446     int i_sat, i_sin, i_cos, i_x, i_y;
 447     int i;
 448
 449     filter_sys_t *p_sys = p_filter->p_sys;
 450
 451     if( !p_pic ) return NULL;
 452
 453     i_lines = p_pic->p->i_lines;
 454     i_visible_lines = p_pic->p->i_visible_lines;
 455     i_pitch = p_pic->p->i_pitch;
 456     i_visible_pitch = p_pic->p->i_visible_pitch;
 457
 458     if( GetPackedYuvOffsets( p_pic->format.i_chroma, &i_y_offset,
 459                              &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 460     {
 461         msg_Warn( p_filter, "Unsupported input chroma (%4s)",
 462                   (char*)&(p_pic->format.i_chroma) );
 463
 464         picture_Release( p_pic );
 465         return NULL;
 466     }
 467
 468     p_outpic = p_filter->pf_vout_buffer_new( p_filter );
 469     if( !p_outpic )
 470     {
 471         msg_Warn( p_filter, "can't get output picture" );
 472
 473         picture_Release( p_pic );
 474         return NULL;
 475     }
 476
 477     /* Get variables */
 478     vlc_mutex_lock( &p_sys->lock );
 479     i_cont = (int)( p_sys->f_contrast * 255 );
 480     i_lum = (int)( (p_sys->f_brightness - 1.0)*255 );
 481     f_hue = (float)( p_sys->i_hue * M_PI / 180 );
 482     i_sat = (int)( p_sys->f_saturation * 256 );
 483     f_gamma = 1.0 / p_sys->f_gamma;
 484     b_thres = p_sys->b_brightness_threshold;
 485     vlc_mutex_unlock( &p_sys->lock );
 486
 487     /*
 488      * Threshold mode drops out everything about luma, contrast and gamma.
 489      */
 490     if( b_thres != true )
 491     {
 492
 493         /* Contrast is a fast but kludged function, so I put this gap to be
 494          * cleaner :) */
 495         i_lum += 128 - i_cont / 2;
 496
 497         /* Fill the gamma lookup table */
 498         for( i = 0 ; i < 256 ; i++ )
 499         {
 500           pi_gamma[ i ] = clip_uint8_vlc( pow(i / 255.0, f_gamma) * 255.0);
 501         }
 502
 503         /* Fill the luma lookup table */
 504         for( i = 0 ; i < 256 ; i++ )
 505         {
 506             pi_luma[ i ] = pi_gamma[clip_uint8_vlc( i_lum + i_cont * i / 256)];
 507         }
 508     }
 509     else
 510     {
 511         /*
 512          * We get luma as threshold value: the higher it is, the darker is
 513          * the image. Should I reverse this?
 514          */
 515         for( i = 0 ; i < 256 ; i++ )
 516         {
 517             pi_luma[ i ] = (i < i_lum) ? 0 : 255;
 518         }
 519
 520         /*
 521          * Desaturates image to avoid that strange yellow halo...
 522          */
 523         i_sat = 0;
 524     }
 525
 526     /*
 527      * Do the Y plane
 528      */
 529
 530     p_in = p_pic->p->p_pixels + i_y_offset;
 531     p_in_end = p_in + p_pic->p->i_visible_lines * p_pic->p->i_pitch - 8 * 4;
 532
 533     p_out = p_outpic->p->p_pixels + i_y_offset;
 534
 535     for( ; p_in < p_in_end ; )
 536     {
 537         p_line_end = p_in + i_visible_pitch - 8 * 4;
 538
 539         for( ; p_in < p_line_end ; )
 540         {
 541             /* Do 8 pixels at a time */
 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             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 548             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 549             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 550         }
 551
 552         p_line_end += 8 * 4;
 553
 554         for( ; p_in < p_line_end ; )
 555         {
 556             *p_out = pi_luma[ *p_in ]; p_in += 2; p_out += 2;
 557         }
 558
 559         p_in += i_pitch - p_pic->p->i_visible_pitch;
 560         p_out += i_pitch - p_outpic->p->i_visible_pitch;
 561     }
 562
 563     /*
 564      * Do the U and V planes
 565      */
 566
 567     p_in = p_pic->p->p_pixels + i_u_offset;
 568     p_in_v = p_pic->p->p_pixels + i_v_offset;
 569     p_in_end = p_in + i_visible_lines * i_pitch - 8 * 4;
 570
 571     p_out = p_outpic->p->p_pixels + i_u_offset;
 572     p_out_v = p_outpic->p->p_pixels + i_v_offset;
 573
 574     i_sin = sin(f_hue) * 256;
 575     i_cos = cos(f_hue) * 256;
 576
 577     i_x = ( cos(f_hue) + sin(f_hue) ) * 32768;
 578     i_y = ( cos(f_hue) - sin(f_hue) ) * 32768;
 579
 580     if ( i_sat > 256 )
 581     {
 582 #define WRITE_UV_CLIP() \
 583     i_u = *p_in; p_in += 4; i_v = *p_in_v; p_in_v += 4; \
 584     *p_out = clip_uint8_vlc( (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 585                            * i_sat) >> 8) + 128); \
 586     p_out += 4; \
 587     *p_out_v = clip_uint8_vlc( (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 588                            * i_sat) >> 8) + 128); \
 589     p_out_v += 4
 590
 591         uint8_t i_u, i_v;
 592
 593         for( ; p_in < p_in_end ; )
 594         {
 595             p_line_end = p_in + i_visible_pitch - 8 * 4;
 596
 597             for( ; p_in < p_line_end ; )
 598             {
 599                 /* Do 8 pixels at a time */
 600                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 601                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 602                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 603                 WRITE_UV_CLIP(); WRITE_UV_CLIP();
 604             }
 605
 606             p_line_end += 8 * 4;
 607
 608             for( ; p_in < p_line_end ; )
 609             {
 610                 WRITE_UV_CLIP();
 611             }
 612
 613             p_in += i_pitch - i_visible_pitch;
 614             p_in_v += i_pitch - i_visible_pitch;
 615             p_out += i_pitch - i_visible_pitch;
 616             p_out_v += i_pitch - i_visible_pitch;
 617         }
 618 #undef WRITE_UV_CLIP
 619     }
 620     else
 621     {
 622 #define WRITE_UV() \
 623     i_u = *p_in; p_in += 4; i_v = *p_in_v; p_in_v += 4; \
 624     *p_out = (( ((i_u * i_cos + i_v * i_sin - i_x) >> 8) \
 625                        * i_sat) >> 8) + 128; \
 626     p_out += 4; \
 627     *p_out_v = (( ((i_v * i_cos - i_u * i_sin - i_y) >> 8) \
 628                        * i_sat) >> 8) + 128; \
 629     p_out_v += 4
 630
 631         uint8_t i_u, i_v;
 632
 633         for( ; p_in < p_in_end ; )
 634         {
 635             p_line_end = p_in + i_visible_pitch - 8 * 4;
 636
 637             for( ; p_in < p_line_end ; )
 638             {
 639                 /* Do 8 pixels at a time */
 640                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 641                 WRITE_UV(); WRITE_UV(); WRITE_UV(); WRITE_UV();
 642             }
 643
 644             p_line_end += 8 * 4;
 645
 646             for( ; p_in < p_line_end ; )
 647             {
 648                 WRITE_UV();
 649             }
 650
 651             p_in += i_pitch - i_visible_pitch;
 652             p_in_v += i_pitch - i_visible_pitch;
 653             p_out += i_pitch - i_visible_pitch;
 654             p_out_v += i_pitch - i_visible_pitch;
 655         }
 656 #undef WRITE_UV
 657     }
 658
 659     return CopyInfoAndRelease( p_outpic, p_pic );
 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     VLC_UNUSED(p_this); VLC_UNUSED(oldval);
 667     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 668
 669     vlc_mutex_lock( &p_sys->lock );
 670     if( !strcmp( psz_var, "contrast" ) )
 671         p_sys->f_contrast = newval.f_float;
 672     else if( !strcmp( psz_var, "brightness" ) )
 673         p_sys->f_brightness = newval.f_float;
 674     else if( !strcmp( psz_var, "hue" ) )
 675         p_sys->i_hue = newval.i_int;
 676     else if( !strcmp( psz_var, "saturation" ) )
 677         p_sys->f_saturation = newval.f_float;
 678     else if( !strcmp( psz_var, "gamma" ) )
 679         p_sys->f_gamma = newval.f_float;
 680     else if( !strcmp( psz_var, "brightness-threshold" ) )
 681         p_sys->b_brightness_threshold = newval.b_bool;
 682     vlc_mutex_unlock( &p_sys->lock );
 683
 684     return VLC_SUCCESS;
 685 }