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

   1 /*****************************************************************************
   2  * extract.c : Extract RGB components
   3  *****************************************************************************
   4  * Copyright (C) 2000-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea .t videolan d@t org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc_common.h>
  33 #include <vlc_plugin.h>
  34 #include <vlc_vout.h>
  35
  36 #include "vlc_filter.h"
  37 #include "filter_picture.h"
  38
  39 #include "math.h"
  40
  41 /*****************************************************************************
  42  * Local prototypes
  43  *****************************************************************************/
  44 static int  Create      ( vlc_object_t * );
  45 static void Destroy     ( vlc_object_t * );
  46
  47 static picture_t *Filter( filter_t *, picture_t * );
  48 static int ExtractCallback( vlc_object_t *, char const *,
  49                             vlc_value_t, vlc_value_t, void * );
  50
  51 static void get_red_from_yuv420( picture_t *, picture_t *, int, int, int );
  52 static void get_green_from_yuv420( picture_t *, picture_t *, int, int, int );
  53 static void get_blue_from_yuv420( picture_t *, picture_t *, int, int, int );
  54 static void get_red_from_yuv422( picture_t *, picture_t *, int, int, int );
  55 static void get_green_from_yuv422( picture_t *, picture_t *, int, int, int );
  56 static void get_blue_from_yuv422( picture_t *, picture_t *, int, int, int );
  57 static void make_projection_matrix( filter_t *, int color, int *matrix );
  58 static void get_custom_from_yuv420( picture_t *, picture_t *, int, int, int, int * );
  59 static void get_custom_from_yuv422( picture_t *, picture_t *, int, int, int, int * );
  60 static void get_custom_from_packedyuv422( picture_t *, picture_t *, int * );
  61
  62
  63 #define COMPONENT_TEXT N_("RGB component to extract")
  64 #define COMPONENT_LONGTEXT N_("RGB component to extract. 0 for Red, 1 for Green and 2 for Blue.")
  65 #define FILTER_PREFIX "extract-"
  66
  67 static const int pi_component_values[] = { 0xFF0000, 0x00FF00, 0x0000FF };
  68 static const char *const ppsz_component_descriptions[] = {
  69     "Red", "Green", "Blue" };
  70
  71 /*****************************************************************************
  72  * Module descriptor
  73  *****************************************************************************/
  74 vlc_module_begin();
  75     set_description( N_("Extract RGB component video filter") );
  76     set_shortname( N_("Extract" ));
  77     set_category( CAT_VIDEO );
  78     set_subcategory( SUBCAT_VIDEO_VFILTER );
  79     set_capability( "video filter2", 0 );
  80     add_shortcut( "extract" );
  81
  82     add_integer_with_range( FILTER_PREFIX "component", 0xFF0000, 1, 0xFFFFFF,
  83                  NULL, COMPONENT_TEXT, COMPONENT_LONGTEXT, false );
  84         change_integer_list( pi_component_values, ppsz_component_descriptions, 0 );
  85
  86     set_callbacks( Create, Destroy );
  87 vlc_module_end();
  88
  89 static const char *const ppsz_filter_options[] = {
  90     "component", NULL
  91 };
  92
  93 enum { RED=0xFF0000, GREEN=0x00FF00, BLUE=0x0000FF };
  94 struct filter_sys_t
  95 {
  96     int i_color;
  97     int *projection_matrix;
  98 };
  99
 100 /*****************************************************************************
 101  * Create
 102  *****************************************************************************/
 103 static int Create( vlc_object_t *p_this )
 104 {
 105     filter_t *p_filter = (filter_t *)p_this;
 106
 107     switch( p_filter->fmt_in.video.i_chroma )
 108     {
 109         case VLC_FOURCC('I','4','2','0'):
 110         case VLC_FOURCC('I','Y','U','V'):
 111         case VLC_FOURCC('J','4','2','0'):
 112         case VLC_FOURCC('Y','V','1','2'):
 113
 114         case VLC_FOURCC('I','4','2','2'):
 115         case VLC_FOURCC('J','4','2','2'):
 116
 117         CASE_PACKED_YUV_422
 118             break;
 119
 120         default:
 121             /* We only want planar YUV 4:2:0 or 4:2:2 */
 122             msg_Err( p_filter, "Unsupported input chroma (%4s)",
 123                      (char*)&(p_filter->fmt_in.video.i_chroma) );
 124             return VLC_EGENERIC;
 125     }
 126
 127     /* Allocate structure */
 128     p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 129     if( p_filter->p_sys == NULL )
 130     {
 131         msg_Err( p_filter, "out of memory" );
 132         return VLC_ENOMEM;
 133     }
 134     p_filter->p_sys->projection_matrix = malloc( 9 * sizeof( int ) );
 135     if( !p_filter->p_sys->projection_matrix )
 136     {
 137         free( p_filter->p_sys );
 138         msg_Err( p_filter, "out of memory" );
 139         return VLC_ENOMEM;
 140     }
 141
 142     config_ChainParse( p_filter, FILTER_PREFIX, ppsz_filter_options,
 143                        p_filter->p_cfg );
 144
 145     p_filter->p_sys->i_color = var_CreateGetIntegerCommand( p_filter,
 146                                                FILTER_PREFIX "component" );
 147     var_AddCallback( p_filter, FILTER_PREFIX "component",
 148                      ExtractCallback, p_filter->p_sys );
 149
 150     /* Matrix won't be used for RED, GREEN or BLUE in planar formats */
 151     make_projection_matrix( p_filter, p_filter->p_sys->i_color,
 152                             p_filter->p_sys->projection_matrix );
 153
 154     p_filter->pf_video_filter = Filter;
 155
 156     return VLC_SUCCESS;
 157 }
 158
 159 /*****************************************************************************
 160  * Destroy
 161  *****************************************************************************/
 162 static void Destroy( vlc_object_t *p_this )
 163 {
 164     filter_t *p_filter = (filter_t *)p_this;
 165
 166     free( p_filter->p_sys->projection_matrix );
 167     free( p_filter->p_sys );
 168 }
 169
 170 /*****************************************************************************
 171  * Render
 172  *****************************************************************************/
 173 static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
 174 {
 175     picture_t *p_outpic;
 176
 177     if( !p_pic ) return NULL;
 178
 179     p_outpic = p_filter->pf_vout_buffer_new( p_filter );
 180     if( !p_outpic )
 181     {
 182         msg_Warn( p_filter, "can't get output picture" );
 183         if( p_pic->pf_release )
 184             p_pic->pf_release( p_pic );
 185         return NULL;
 186     }
 187
 188     switch( p_pic->format.i_chroma )
 189     {
 190         case VLC_FOURCC('I','4','2','0'):
 191         case VLC_FOURCC('I','Y','U','V'):
 192         case VLC_FOURCC('J','4','2','0'):
 193         case VLC_FOURCC('Y','V','1','2'):
 194             switch( p_filter->p_sys->i_color )
 195             {
 196                 case RED:
 197                     get_red_from_yuv420( p_pic, p_outpic,
 198                                          Y_PLANE, U_PLANE, V_PLANE );
 199                     break;
 200                 case GREEN:
 201                     get_green_from_yuv420( p_pic, p_outpic,
 202                                            Y_PLANE, U_PLANE, V_PLANE );
 203                     break;
 204                 case BLUE:
 205                     get_blue_from_yuv420( p_pic, p_outpic,
 206                                           Y_PLANE, U_PLANE, V_PLANE );
 207                     break;
 208                 default:
 209                     get_custom_from_yuv420( p_pic, p_outpic,
 210                                             Y_PLANE, U_PLANE, V_PLANE,
 211                                             p_filter->p_sys->projection_matrix);
 212                     break;
 213             }
 214             break;
 215
 216         case VLC_FOURCC('I','4','2','2'):
 217         case VLC_FOURCC('J','4','2','2'):
 218             switch( p_filter->p_sys->i_color )
 219             {
 220                 case RED:
 221                     get_red_from_yuv422( p_pic, p_outpic,
 222                                          Y_PLANE, U_PLANE, V_PLANE );
 223                     break;
 224                 case GREEN:
 225                     get_green_from_yuv422( p_pic, p_outpic,
 226                                            Y_PLANE, U_PLANE, V_PLANE );
 227                     break;
 228                 case BLUE:
 229                     get_blue_from_yuv422( p_pic, p_outpic,
 230                                           Y_PLANE, U_PLANE, V_PLANE );
 231                     break;
 232                 default:
 233                     get_custom_from_yuv422( p_pic, p_outpic,
 234                                             Y_PLANE, U_PLANE, V_PLANE,
 235                                             p_filter->p_sys->projection_matrix);
 236                     break;
 237             }
 238             break;
 239
 240         CASE_PACKED_YUV_422
 241             get_custom_from_packedyuv422( p_pic, p_outpic,
 242                                           p_filter->p_sys->projection_matrix );
 243             break;
 244
 245         default:
 246             msg_Warn( p_filter, "Unsupported input chroma (%4s)",
 247                       (char*)&(p_pic->format.i_chroma) );
 248             if( p_pic->pf_release )
 249                 p_pic->pf_release( p_pic );
 250             return NULL;
 251     }
 252
 253     return CopyInfoAndRelease( p_outpic, p_pic );
 254 }
 255
 256 static inline uint8_t crop( int a )
 257 {
 258     if( a < 0 ) return 0;
 259     if( a > 255 ) return 255;
 260     else return (uint8_t)a;
 261 }
 262
 263 #define U 128
 264 #define V 128
 265
 266 static void mmult( double *res, double *a, double *b )
 267 {
 268     int i, j, k;
 269     for( i = 0; i < 3; i++ )
 270     {
 271         for( j = 0; j < 3; j++ )
 272         {
 273             res[ i*3 + j ] = 0.;
 274             for( k = 0; k < 3; k++ )
 275             {
 276                 res[ i*3 + j ] += a[ i*3 + k ] * b[ k*3 + j ];
 277             }
 278         }
 279     }
 280 }
 281 static void make_projection_matrix( filter_t *p_filter, int color, int *matrix )
 282 {
 283     double left_matrix[9] =
 284         {  76.24500,  149.68500,  29.07000,
 285           -43.02765,  -84.47235, 127.50000,
 286           127.50000, -106.76534, -20.73466 };
 287     double right_matrix[9] =
 288         { 257.00392,   0.00000,  360.31950,
 289           257.00392, -88.44438, -183.53583,
 290           257.00392, 455.41095,    0.00000 };
 291     double red = ((double)(( 0xFF0000 & color )>>16))/255.;
 292     double green = ((double)(( 0x00FF00 & color )>>8))/255.;
 293     double blue = ((double)( 0x0000FF & color ))/255.;
 294     double norm = sqrt( red*red + green*green + blue*blue );
 295     red /= norm;
 296     green /= norm;
 297     blue /= norm;
 298     /* XXX: We might still need to norm the rgb_matrix */
 299     double rgb_matrix[9] =
 300         { red*red,    red*green,   red*blue,
 301           red*green,  green*green, green*blue,
 302           red*blue,   green*blue,  blue*blue };
 303     double result1[9];
 304     double result[9];
 305     int i;
 306     msg_Dbg( p_filter, "red: %f", red );
 307     msg_Dbg( p_filter, "green: %f", green );
 308     msg_Dbg( p_filter, "blue: %f", blue );
 309     mmult( result1, rgb_matrix, right_matrix );
 310     mmult( result, left_matrix, result1 );
 311     for( i = 0; i < 9; i++ )
 312     {
 313         matrix[i] = (int)result[i];
 314     }
 315     msg_Dbg( p_filter, "Projection matrix:" );
 316     msg_Dbg( p_filter, "%6d %6d %6d", matrix[0], matrix[1], matrix[2] );
 317     msg_Dbg( p_filter, "%6d %6d %6d", matrix[3], matrix[4], matrix[5] );
 318     msg_Dbg( p_filter, "%6d %6d %6d", matrix[6], matrix[7], matrix[8] );
 319 }
 320
 321 static void get_custom_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 322                                     int yp, int up, int vp, int *m )
 323 {
 324     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 325     uint8_t *y2in;
 326     uint8_t *uin  = p_inpic->p[up].p_pixels;
 327     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 328
 329     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 330     uint8_t *y2out;
 331     uint8_t *uout  = p_outpic->p[up].p_pixels;
 332     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 333
 334     const int i_pitch = p_inpic->p[yp].i_pitch;
 335     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 336     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 337
 338     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 339     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 340
 341     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 342     while( y1in < yend )
 343     {
 344         const uint8_t *y1end = y1in + i_visible_pitch;
 345         y2in  = y1in + i_pitch;
 346         y2out = y1out + i_pitch;
 347         while( y1in < y1end )
 348         {
 349             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 350                       / 65536 + U );
 351             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 352                       / 65536 + V );
 353             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 354                        / 65536 );
 355             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 356                        / 65536 );
 357             *y2out++ = crop( (*y2in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 358                        / 65536 );
 359             *y2out++ = crop( (*y2in++ * m[0] + (*uin++ - U) * m[1] + (*vin++ -V) * m[2])
 360                        / 65536 );
 361         }
 362         y1in  += 2*i_pitch - i_visible_pitch;
 363         y1out += 2*i_pitch - i_visible_pitch;
 364         uin   += i_uv_pitch - i_uv_visible_pitch;
 365         uout  += i_uv_pitch - i_uv_visible_pitch;
 366         vin   += i_uv_pitch - i_uv_visible_pitch;
 367         vout  += i_uv_pitch - i_uv_visible_pitch;
 368     }
 369 }
 370 static void get_custom_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 371                                     int yp, int up, int vp, int *m )
 372 {
 373     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 374     uint8_t *uin  = p_inpic->p[up].p_pixels;
 375     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 376
 377     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 378     uint8_t *uout  = p_outpic->p[up].p_pixels;
 379     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 380
 381     const int i_pitch = p_inpic->p[yp].i_pitch;
 382     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 383     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 384
 385     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 386     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 387
 388     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 389     while( y1in < yend )
 390     {
 391         const uint8_t *y1end = y1in + i_visible_pitch;
 392         while( y1in < y1end )
 393         {
 394             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 395                       / 65536 + U );
 396             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 397                       / 65536 + V );
 398             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 399                        / 65536 );
 400             *y1out++ = crop( (*y1in++ * m[0] + (*uin++ -U) * m[1] + (*vin++ -V) * m[2])
 401                        / 65536 );
 402         }
 403         y1in  += i_pitch - i_visible_pitch;
 404         y1out += i_pitch - i_visible_pitch;
 405         uin   += i_uv_pitch - i_uv_visible_pitch;
 406         uout  += i_uv_pitch - i_uv_visible_pitch;
 407         vin   += i_uv_pitch - i_uv_visible_pitch;
 408         vout  += i_uv_pitch - i_uv_visible_pitch;
 409     }
 410 }
 411
 412 static void get_custom_from_packedyuv422( picture_t *p_inpic,
 413                                           picture_t *p_outpic,
 414                                           int *m )
 415 {
 416     int i_y_offset, i_u_offset, i_v_offset;
 417     if( GetPackedYuvOffsets( p_inpic->format.i_chroma, &i_y_offset,
 418                          &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 419         return;
 420
 421     uint8_t *yin = p_inpic->p->p_pixels + i_y_offset;
 422     uint8_t *uin = p_inpic->p->p_pixels + i_u_offset;
 423     uint8_t *vin = p_inpic->p->p_pixels + i_v_offset;
 424
 425     uint8_t *yout = p_outpic->p->p_pixels + i_y_offset;
 426     uint8_t *uout = p_outpic->p->p_pixels + i_u_offset;
 427     uint8_t *vout = p_outpic->p->p_pixels + i_v_offset;
 428
 429     const int i_pitch = p_inpic->p->i_pitch;
 430     const int i_visible_pitch = p_inpic->p->i_visible_pitch;
 431     const int i_visible_lines = p_inpic->p->i_visible_lines;
 432
 433     const uint8_t *yend = yin + i_visible_lines * i_pitch;
 434     while( yin < yend )
 435     {
 436         const uint8_t *ylend = yin + i_visible_pitch;
 437         while( yin < ylend )
 438         {
 439             *uout = crop( (*yin * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 440                       / 65536 + U );
 441             uout += 4;
 442             *vout = crop( (*yin * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 443                      / 65536 + V );
 444             vout += 4;
 445             *yout = crop( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 446                        / 65536 );
 447             yin  += 2;
 448             yout += 2;
 449             *yout = crop( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 450                        / 65536 );
 451             yin  += 2;
 452             yout += 2;
 453             uin  += 4;
 454             vin  += 4;
 455         }
 456         yin  += i_pitch - i_visible_pitch;
 457         yout += i_pitch - i_visible_pitch;
 458         uin  += i_pitch - i_visible_pitch;
 459         uout += i_pitch - i_visible_pitch;
 460         vin  += i_pitch - i_visible_pitch;
 461         vout += i_pitch - i_visible_pitch;
 462     }
 463 }
 464
 465 static void get_red_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 466                                  int yp, int up, int vp )
 467 {
 468     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 469     uint8_t *y2in;
 470     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 471
 472     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 473     uint8_t *y2out;
 474     uint8_t *uout  = p_outpic->p[up].p_pixels;
 475     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 476
 477     const int i_pitch = p_inpic->p[yp].i_pitch;
 478     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 479     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 480
 481     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 482     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 483
 484     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 485     while( y1in < yend )
 486     {
 487         const uint8_t *y1end = y1in + i_visible_pitch;
 488         y2in  = y1in + i_pitch;
 489         y2out = y1out + i_pitch;
 490         while( y1in < y1end )
 491         {
 492 /*
 493 19595   0   27473
 494 -11058  0   -15504
 495 32768   0   45941
 496 */
 497             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 498                       / 65536 + U );
 499             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 500                       / 65536 + V );
 501             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 502                        / 65536 );
 503             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 504                        / 65536 );
 505             *y2out++ = crop( (*y2in++ * 19594 + (*vin - V) * 27473)
 506                        / 65536 );
 507             *y2out++ = crop( (*y2in++ * 19594 + (*vin++ - V) * 27473)
 508                        / 65536 );
 509         }
 510         y1in  += 2*i_pitch - i_visible_pitch;
 511         y1out += 2*i_pitch - i_visible_pitch;
 512         uout  += i_uv_pitch - i_uv_visible_pitch;
 513         vin   += i_uv_pitch - i_uv_visible_pitch;
 514         vout  += i_uv_pitch - i_uv_visible_pitch;
 515     }
 516 }
 517
 518 static void get_green_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 519                                  int yp, int up, int vp )
 520 {
 521     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 522     uint8_t *y2in;
 523     uint8_t *uin  = p_inpic->p[up].p_pixels;
 524     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 525
 526     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 527     uint8_t *y2out;
 528     uint8_t *uout  = p_outpic->p[up].p_pixels;
 529     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 530
 531     const int i_pitch = p_inpic->p[yp].i_pitch;
 532     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 533     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 534
 535     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 536     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 537
 538     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 539     while( y1in < yend )
 540     {
 541         const uint8_t *y1end = y1in + i_visible_pitch;
 542         y2in  = y1in + i_pitch;
 543         y2out = y1out + i_pitch;
 544         while( y1in < y1end )
 545         {
 546 /*
 547 38470   -13239  -27473
 548 -21710  7471    15504
 549 -27439  9443    19595
 550 */
 551             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 552                       / 65536 + U );
 553             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 554                       / 65536 + V );
 555             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 556                        / 65536 );
 557             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 558                        / 65536 );
 559             *y2out++ = crop( (*y2in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 560                        / 65536 );
 561             *y2out++ = crop( (*y2in++ * 38470 + (*uin++ - U) * -13239 + (*vin++ -V) * -27473)
 562                        / 65536 );
 563         }
 564         y1in  += 2*i_pitch - i_visible_pitch;
 565         y1out += 2*i_pitch - i_visible_pitch;
 566         uin   += i_uv_pitch - i_uv_visible_pitch;
 567         uout  += i_uv_pitch - i_uv_visible_pitch;
 568         vin   += i_uv_pitch - i_uv_visible_pitch;
 569         vout  += i_uv_pitch - i_uv_visible_pitch;
 570     }
 571 }
 572
 573 static void get_blue_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 574                                  int yp, int up, int vp )
 575 {
 576     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 577     uint8_t *y2in;
 578     uint8_t *uin  = p_inpic->p[up].p_pixels;
 579
 580     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 581     uint8_t *y2out;
 582     uint8_t *uout  = p_outpic->p[up].p_pixels;
 583     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 584
 585     const int i_pitch = p_inpic->p[yp].i_pitch;
 586     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 587     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 588
 589     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 590     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 591
 592     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 593     while( y1in < yend )
 594     {
 595         const uint8_t *y1end = y1in + i_visible_pitch;
 596         y2in  = y1in + i_pitch;
 597         y2out = y1out + i_pitch;
 598         while( y1in < y1end )
 599         {
 600 /*
 601 7471    13239   0
 602 32768   58065   0
 603 -5329   -9443   0
 604 */
 605             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 606                       / 65536 + U );
 607             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 608                       / 65536 + V );
 609             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 610                        / 65536 );
 611             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 612                        / 65536 );
 613             *y2out++ = crop( (*y2in++ * 7471 + (*uin - U) * 13239 )
 614                        / 65536 );
 615             *y2out++ = crop( (*y2in++ * 7471 + (*uin++ - U) * 13239 )
 616                        / 65536 );
 617         }
 618         y1in  += 2*i_pitch - i_visible_pitch;
 619         y1out += 2*i_pitch - i_visible_pitch;
 620         uin   += i_uv_pitch - i_uv_visible_pitch;
 621         uout  += i_uv_pitch - i_uv_visible_pitch;
 622         vout  += i_uv_pitch - i_uv_visible_pitch;
 623     }
 624 }
 625
 626 static void get_red_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 627                                  int yp, int up, int vp )
 628 {
 629     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 630     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 631
 632     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 633     uint8_t *uout  = p_outpic->p[up].p_pixels;
 634     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 635
 636     const int i_pitch = p_inpic->p[yp].i_pitch;
 637     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 638     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 639
 640     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 641     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 642
 643     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 644     while( y1in < yend )
 645     {
 646         const uint8_t *y1end = y1in + i_visible_pitch;
 647         while( y1in < y1end )
 648         {
 649 /*
 650 19595   0   27473
 651 -11058  0   -15504
 652 32768   0   45941
 653 */
 654             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 655                       / 65536 + U );
 656             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 657                       / 65536 + V );
 658             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 659                        / 65536 );
 660             *y1out++ = crop( (*y1in++ * 19595 + (*vin++ - V) * 27473)
 661                        / 65536 );
 662         }
 663         y1in  += i_pitch - i_visible_pitch;
 664         y1out += i_pitch - i_visible_pitch;
 665         uout  += i_uv_pitch - i_uv_visible_pitch;
 666         vin   += i_uv_pitch - i_uv_visible_pitch;
 667         vout  += i_uv_pitch - i_uv_visible_pitch;
 668     }
 669 }
 670
 671 static void get_green_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 672                                    int yp, int up, int vp )
 673 {
 674     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 675     uint8_t *uin  = p_inpic->p[up].p_pixels;
 676     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 677
 678     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 679     uint8_t *uout  = p_outpic->p[up].p_pixels;
 680     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 681
 682     const int i_pitch = p_inpic->p[yp].i_pitch;
 683     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 684     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 685
 686     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 687     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 688
 689     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 690     while( y1in < yend )
 691     {
 692         const uint8_t *y1end = y1in + i_visible_pitch;
 693         while( y1in < y1end )
 694         {
 695 /*
 696 38470   -13239  -27473
 697 -21710  7471    15504
 698 -27439  9443    19595
 699 */
 700             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 701                       / 65536 + U );
 702             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 703                       / 65536 + V );
 704             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 705                        / 65536 );
 706             *y1out++ = crop( (*y1in++ * 38470 + (*uin++-U) * -13239 + (*vin++-V) * -27473)
 707                        / 65536 );
 708         }
 709         y1in  += i_pitch - i_visible_pitch;
 710         y1out += i_pitch - i_visible_pitch;
 711         uin   += i_uv_pitch - i_uv_visible_pitch;
 712         uout  += i_uv_pitch - i_uv_visible_pitch;
 713         vin   += i_uv_pitch - i_uv_visible_pitch;
 714         vout  += i_uv_pitch - i_uv_visible_pitch;
 715     }
 716 }
 717
 718 static void get_blue_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 719                                  int yp, int up, int vp )
 720 {
 721     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 722     uint8_t *uin  = p_inpic->p[up].p_pixels;
 723
 724     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 725     uint8_t *uout  = p_outpic->p[up].p_pixels;
 726     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 727
 728     const int i_pitch = p_inpic->p[yp].i_pitch;
 729     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 730     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 731
 732     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 733     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 734
 735     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 736     while( y1in < yend )
 737     {
 738         const uint8_t *y1end = y1in + i_visible_pitch;
 739         while( y1in < y1end )
 740         {
 741 /*
 742 7471    13239   0
 743 32768   58065   0
 744 -5329   -9443   0
 745 */
 746             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 747                       / 65536 + U );
 748             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 749                       / 65536 + V );
 750             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 751                        / 65536 );
 752             *y1out++ = crop( (*y1in++ * 7471 + (*uin++ - U) * 13239 )
 753                        / 65536 );
 754         }
 755         y1in  += i_pitch - i_visible_pitch;
 756         y1out += i_pitch - i_visible_pitch;
 757         uin   += i_uv_pitch - i_uv_visible_pitch;
 758         uout  += i_uv_pitch - i_uv_visible_pitch;
 759         vout  += i_uv_pitch - i_uv_visible_pitch;
 760     }
 761 }
 762
 763 static int ExtractCallback( vlc_object_t *p_this, char const *psz_var,
 764                             vlc_value_t oldval, vlc_value_t newval,
 765                             void *p_data )
 766 {
 767     VLC_UNUSED(oldval);
 768     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 769
 770     if( !strcmp( psz_var, FILTER_PREFIX "component" ) )
 771     {
 772         p_sys->i_color = newval.i_int;
 773         /* Matrix won't be used for RED, GREEN or BLUE in planar formats */
 774         make_projection_matrix( (filter_t *)p_this, p_sys->i_color,
 775                                 p_sys->projection_matrix );
 776     }
 777     else
 778     {
 779         msg_Warn( p_this, "Unknown callback command." );
 780     }
 781     return VLC_SUCCESS;
 782 }