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