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