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 inline uint8_t crop( int a );
 240 inline uint8_t crop( int a )
 241 {
 242     if( a < 0 ) return 0;
 243     if( a > 255 ) return 255;
 244     else return (uint8_t)a;
 245 }
 246
 247 #define U 128
 248 #define V 128
 249
 250 static void mmult( double *res, double *a, double *b )
 251 {
 252     int i, j, k;
 253     for( i = 0; i < 3; i++ )
 254     {
 255         for( j = 0; j < 3; j++ )
 256         {
 257             res[ i*3 + j ] = 0.;
 258             for( k = 0; k < 3; k++ )
 259             {
 260                 res[ i*3 + j ] += a[ i*3 + k ] * b[ k*3 + j ];
 261             }
 262         }
 263     }
 264 }
 265 static void make_projection_matrix( filter_t *p_filter, int color, int *matrix )
 266 {
 267     double left_matrix[9] =
 268         {  76.24500,  149.68500,  29.07000,
 269           -43.02765,  -84.47235, 127.50000,
 270           127.50000, -106.76534, -20.73466 };
 271     double right_matrix[9] =
 272         { 257.00392,   0.00000,  360.31950,
 273           257.00392, -88.44438, -183.53583,
 274           257.00392, 455.41095,    0.00000 };
 275     double red = ((double)(( 0xFF0000 & color )>>16))/255.;
 276     double green = ((double)(( 0x00FF00 & color )>>8))/255.;
 277     double blue = ((double)( 0x0000FF & color ))/255.;
 278     double norm = sqrt( red*red + green*green + blue*blue );
 279     red /= norm;
 280     green /= norm;
 281     blue /= norm;
 282     /* XXX: We might still need to norm the rgb_matrix */
 283     double rgb_matrix[9] =
 284         { red*red,    red*green,   red*blue,
 285           red*green,  green*green, green*blue,
 286           red*blue,   green*blue,  blue*blue };
 287     double result1[9];
 288     double result[9];
 289     int i;
 290     msg_Dbg( p_filter, "red: %f", red );
 291     msg_Dbg( p_filter, "green: %f", green );
 292     msg_Dbg( p_filter, "blue: %f", blue );
 293     mmult( result1, rgb_matrix, right_matrix );
 294     mmult( result, left_matrix, result1 );
 295     for( i = 0; i < 9; i++ )
 296     {
 297         matrix[i] = (int)result[i];
 298     }
 299     msg_Dbg( p_filter, "Projection matrix:" );
 300     msg_Dbg( p_filter, "%6d %6d %6d", matrix[0], matrix[1], matrix[2] );
 301     msg_Dbg( p_filter, "%6d %6d %6d", matrix[3], matrix[4], matrix[5] );
 302     msg_Dbg( p_filter, "%6d %6d %6d", matrix[6], matrix[7], matrix[8] );
 303 }
 304
 305 static void get_custom_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 306                                     int yp, int up, int vp, int *m )
 307 {
 308     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 309     uint8_t *y2in;
 310     uint8_t *uin  = p_inpic->p[up].p_pixels;
 311     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 312
 313     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 314     uint8_t *y2out;
 315     uint8_t *uout  = p_outpic->p[up].p_pixels;
 316     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 317
 318     const int i_pitch = p_inpic->p[yp].i_pitch;
 319     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 320     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 321
 322     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 323     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 324
 325     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 326     while( y1in < yend )
 327     {
 328         const uint8_t *y1end = y1in + i_visible_pitch;
 329         y2in  = y1in + i_pitch;
 330         y2out = y1out + i_pitch;
 331         while( y1in < y1end )
 332         {
 333             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 334                       / 65536 + U );
 335             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 336                       / 65536 + V );
 337             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 338                        / 65536 );
 339             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 340                        / 65536 );
 341             *y2out++ = crop( (*y2in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 342                        / 65536 );
 343             *y2out++ = crop( (*y2in++ * m[0] + (*uin++ - U) * m[1] + (*vin++ -V) * m[2])
 344                        / 65536 );
 345         }
 346         y1in  += 2*i_pitch - i_visible_pitch;
 347         y1out += 2*i_pitch - i_visible_pitch;
 348         uin   += i_uv_pitch - i_uv_visible_pitch;
 349         uout  += i_uv_pitch - i_uv_visible_pitch;
 350         vin   += i_uv_pitch - i_uv_visible_pitch;
 351         vout  += i_uv_pitch - i_uv_visible_pitch;
 352     }
 353 }
 354 static void get_custom_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 355                                     int yp, int up, int vp, int *m )
 356 {
 357     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 358     uint8_t *uin  = p_inpic->p[up].p_pixels;
 359     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 360
 361     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 362     uint8_t *uout  = p_outpic->p[up].p_pixels;
 363     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 364
 365     const int i_pitch = p_inpic->p[yp].i_pitch;
 366     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 367     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 368
 369     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 370     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 371
 372     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 373     while( y1in < yend )
 374     {
 375         const uint8_t *y1end = y1in + i_visible_pitch;
 376         while( y1in < y1end )
 377         {
 378             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 379                       / 65536 + U );
 380             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 381                       / 65536 + V );
 382             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 383                        / 65536 );
 384             *y1out++ = crop( (*y1in++ * m[0] + (*uin++ -U) * m[1] + (*vin++ -V) * m[2])
 385                        / 65536 );
 386         }
 387         y1in  += i_pitch - i_visible_pitch;
 388         y1out += i_pitch - i_visible_pitch;
 389         uin   += i_uv_pitch - i_uv_visible_pitch;
 390         uout  += i_uv_pitch - i_uv_visible_pitch;
 391         vin   += i_uv_pitch - i_uv_visible_pitch;
 392         vout  += i_uv_pitch - i_uv_visible_pitch;
 393     }
 394 }
 395
 396 static void get_red_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 397                                  int yp, int up, int vp )
 398 {
 399     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 400     uint8_t *y2in;
 401     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 402
 403     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 404     uint8_t *y2out;
 405     uint8_t *uout  = p_outpic->p[up].p_pixels;
 406     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 407
 408     const int i_pitch = p_inpic->p[yp].i_pitch;
 409     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 410     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 411
 412     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 413     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 414
 415     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 416     while( y1in < yend )
 417     {
 418         const uint8_t *y1end = y1in + i_visible_pitch;
 419         y2in  = y1in + i_pitch;
 420         y2out = y1out + i_pitch;
 421         while( y1in < y1end )
 422         {
 423 /*
 424 19595   0   27473
 425 -11058  0   -15504
 426 32768   0   45941
 427 */
 428             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 429                       / 65536 + U );
 430             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 431                       / 65536 + V );
 432             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 433                        / 65536 );
 434             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 435                        / 65536 );
 436             *y2out++ = crop( (*y2in++ * 19594 + (*vin - V) * 27473)
 437                        / 65536 );
 438             *y2out++ = crop( (*y2in++ * 19594 + (*vin++ - V) * 27473)
 439                        / 65536 );
 440         }
 441         y1in  += 2*i_pitch - i_visible_pitch;
 442         y1out += 2*i_pitch - i_visible_pitch;
 443         uout  += i_uv_pitch - i_uv_visible_pitch;
 444         vin   += i_uv_pitch - i_uv_visible_pitch;
 445         vout  += i_uv_pitch - i_uv_visible_pitch;
 446     }
 447 }
 448
 449 static void get_green_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 450                                  int yp, int up, int vp )
 451 {
 452     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 453     uint8_t *y2in;
 454     uint8_t *uin  = p_inpic->p[up].p_pixels;
 455     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 456
 457     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 458     uint8_t *y2out;
 459     uint8_t *uout  = p_outpic->p[up].p_pixels;
 460     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 461
 462     const int i_pitch = p_inpic->p[yp].i_pitch;
 463     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 464     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 465
 466     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 467     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 468
 469     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 470     while( y1in < yend )
 471     {
 472         const uint8_t *y1end = y1in + i_visible_pitch;
 473         y2in  = y1in + i_pitch;
 474         y2out = y1out + i_pitch;
 475         while( y1in < y1end )
 476         {
 477 /*
 478 38470   -13239  -27473
 479 -21710  7471    15504
 480 -27439  9443    19595
 481 */
 482             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 483                       / 65536 + U );
 484             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 485                       / 65536 + V );
 486             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 487                        / 65536 );
 488             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 489                        / 65536 );
 490             *y2out++ = crop( (*y2in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 491                        / 65536 );
 492             *y2out++ = crop( (*y2in++ * 38470 + (*uin++ - U) * -13239 + (*vin++ -V) * -27473)
 493                        / 65536 );
 494         }
 495         y1in  += 2*i_pitch - i_visible_pitch;
 496         y1out += 2*i_pitch - i_visible_pitch;
 497         uin   += i_uv_pitch - i_uv_visible_pitch;
 498         uout  += i_uv_pitch - i_uv_visible_pitch;
 499         vin   += i_uv_pitch - i_uv_visible_pitch;
 500         vout  += i_uv_pitch - i_uv_visible_pitch;
 501     }
 502 }
 503
 504 static void get_blue_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 505                                  int yp, int up, int vp )
 506 {
 507     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 508     uint8_t *y2in;
 509     uint8_t *uin  = p_inpic->p[up].p_pixels;
 510
 511     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 512     uint8_t *y2out;
 513     uint8_t *uout  = p_outpic->p[up].p_pixels;
 514     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 515
 516     const int i_pitch = p_inpic->p[yp].i_pitch;
 517     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 518     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 519
 520     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 521     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 522
 523     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 524     while( y1in < yend )
 525     {
 526         const uint8_t *y1end = y1in + i_visible_pitch;
 527         y2in  = y1in + i_pitch;
 528         y2out = y1out + i_pitch;
 529         while( y1in < y1end )
 530         {
 531 /*
 532 7471    13239   0
 533 32768   58065   0
 534 -5329   -9443   0
 535 */
 536             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 537                       / 65536 + U );
 538             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 539                       / 65536 + V );
 540             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 541                        / 65536 );
 542             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 543                        / 65536 );
 544             *y2out++ = crop( (*y2in++ * 7471 + (*uin - U) * 13239 )
 545                        / 65536 );
 546             *y2out++ = crop( (*y2in++ * 7471 + (*uin++ - U) * 13239 )
 547                        / 65536 );
 548         }
 549         y1in  += 2*i_pitch - i_visible_pitch;
 550         y1out += 2*i_pitch - i_visible_pitch;
 551         uin   += i_uv_pitch - i_uv_visible_pitch;
 552         uout  += i_uv_pitch - i_uv_visible_pitch;
 553         vout  += i_uv_pitch - i_uv_visible_pitch;
 554     }
 555 }
 556
 557 static void get_red_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 558                                  int yp, int up, int vp )
 559 {
 560     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 561     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 562
 563     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 564     uint8_t *uout  = p_outpic->p[up].p_pixels;
 565     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 566
 567     const int i_pitch = p_inpic->p[yp].i_pitch;
 568     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 569     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 570
 571     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 572     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 573
 574     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 575     while( y1in < yend )
 576     {
 577         const uint8_t *y1end = y1in + i_visible_pitch;
 578         while( y1in < y1end )
 579         {
 580 /*
 581 19595   0   27473
 582 -11058  0   -15504
 583 32768   0   45941
 584 */
 585             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 586                       / 65536 + U );
 587             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 588                       / 65536 + V );
 589             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 590                        / 65536 );
 591             *y1out++ = crop( (*y1in++ * 19595 + (*vin++ - V) * 27473)
 592                        / 65536 );
 593         }
 594         y1in  += i_pitch - i_visible_pitch;
 595         y1out += i_pitch - i_visible_pitch;
 596         uout  += i_uv_pitch - i_uv_visible_pitch;
 597         vin   += i_uv_pitch - i_uv_visible_pitch;
 598         vout  += i_uv_pitch - i_uv_visible_pitch;
 599     }
 600 }
 601
 602 static void get_green_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 603                                    int yp, int up, int vp )
 604 {
 605     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 606     uint8_t *uin  = p_inpic->p[up].p_pixels;
 607     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 608
 609     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 610     uint8_t *uout  = p_outpic->p[up].p_pixels;
 611     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 612
 613     const int i_pitch = p_inpic->p[yp].i_pitch;
 614     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 615     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 616
 617     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 618     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 619
 620     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 621     while( y1in < yend )
 622     {
 623         const uint8_t *y1end = y1in + i_visible_pitch;
 624         while( y1in < y1end )
 625         {
 626 /*
 627 38470   -13239  -27473
 628 -21710  7471    15504
 629 -27439  9443    19595
 630 */
 631             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 632                       / 65536 + U );
 633             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 634                       / 65536 + V );
 635             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 636                        / 65536 );
 637             *y1out++ = crop( (*y1in++ * 38470 + (*uin++-U) * -13239 + (*vin++-V) * -27473)
 638                        / 65536 );
 639         }
 640         y1in  += i_pitch - i_visible_pitch;
 641         y1out += i_pitch - i_visible_pitch;
 642         uin   += i_uv_pitch - i_uv_visible_pitch;
 643         uout  += i_uv_pitch - i_uv_visible_pitch;
 644         vin   += i_uv_pitch - i_uv_visible_pitch;
 645         vout  += i_uv_pitch - i_uv_visible_pitch;
 646     }
 647 }
 648
 649 static void get_blue_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 650                                  int yp, int up, int vp )
 651 {
 652     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 653     uint8_t *uin  = p_inpic->p[up].p_pixels;
 654
 655     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 656     uint8_t *uout  = p_outpic->p[up].p_pixels;
 657     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 658
 659     const int i_pitch = p_inpic->p[yp].i_pitch;
 660     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 661     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 662
 663     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 664     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 665
 666     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 667     while( y1in < yend )
 668     {
 669         const uint8_t *y1end = y1in + i_visible_pitch;
 670         while( y1in < y1end )
 671         {
 672 /*
 673 7471    13239   0
 674 32768   58065   0
 675 -5329   -9443   0
 676 */
 677             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 678                       / 65536 + U );
 679             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 680                       / 65536 + V );
 681             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 682                        / 65536 );
 683             *y1out++ = crop( (*y1in++ * 7471 + (*uin++ - U) * 13239 )
 684                        / 65536 );
 685         }
 686         y1in  += i_pitch - i_visible_pitch;
 687         y1out += i_pitch - i_visible_pitch;
 688         uin   += i_uv_pitch - i_uv_visible_pitch;
 689         uout  += i_uv_pitch - i_uv_visible_pitch;
 690         vout  += i_uv_pitch - i_uv_visible_pitch;
 691     }
 692 }
 693
 694 static int ExtractCallback( vlc_object_t *p_this, char const *psz_var,
 695                             vlc_value_t oldval, vlc_value_t newval,
 696                             void *p_data )
 697 {
 698     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 699
 700     if( !strcmp( psz_var, FILTER_PREFIX "component" ) )
 701     {
 702         p_sys->i_color = newval.i_int;
 703         switch( p_sys->i_color )
 704         {
 705             case RED:
 706             case GREEN:
 707             case BLUE:
 708                 break;
 709             default:
 710                 make_projection_matrix( (filter_t *)p_this, p_sys->i_color,
 711                                         p_sys->projection_matrix );
 712                 break;
 713         }
 714     }
 715     else
 716     {
 717         msg_Warn( p_this, "Unknown callback command." );
 718     }
 719     return VLC_SUCCESS;
 720 }