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 #include "filter_picture.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 static void get_custom_from_packedyuv422( picture_t *, picture_t *, int * );
  56
  57
  58 #define COMPONENT_TEXT N_("RGB component to extract")
  59 #define COMPONENT_LONGTEXT N_("RGB component to extract. 0 for Red, 1 for Green and 2 for Blue.")
  60 #define FILTER_PREFIX "extract-"
  61
  62 static int pi_component_values[] = { 0xFF0000, 0x00FF00, 0x0000FF };
  63 static const char *ppsz_component_descriptions[] = { "Red", "Green", "Blue" };
  64
  65 /*****************************************************************************
  66  * Module descriptor
  67  *****************************************************************************/
  68 vlc_module_begin();
  69     set_description( _("Extract RGB component video filter") );
  70     set_shortname( _("Extract" ));
  71     set_category( CAT_VIDEO );
  72     set_subcategory( SUBCAT_VIDEO_VFILTER );
  73     set_capability( "video filter2", 0 );
  74     add_shortcut( "extract" );
  75
  76     add_integer_with_range( FILTER_PREFIX "component", 0xFF0000, 1, 0xFFFFFF,
  77                  NULL, COMPONENT_TEXT, COMPONENT_LONGTEXT, VLC_FALSE );
  78         change_safe();
  79         change_integer_list( pi_component_values, ppsz_component_descriptions, 0 );
  80
  81     set_callbacks( Create, Destroy );
  82 vlc_module_end();
  83
  84 static const char *ppsz_filter_options[] = {
  85     "component", NULL
  86 };
  87
  88 enum { RED=0xFF0000, GREEN=0x00FF00, BLUE=0x0000FF };
  89 struct filter_sys_t
  90 {
  91     int i_color;
  92     int *projection_matrix;
  93 };
  94
  95 /*****************************************************************************
  96  * Create
  97  *****************************************************************************/
  98 static int Create( vlc_object_t *p_this )
  99 {
 100     filter_t *p_filter = (filter_t *)p_this;
 101
 102     switch( p_filter->fmt_in.video.i_chroma )
 103     {
 104         case VLC_FOURCC('I','4','2','0'):
 105         case VLC_FOURCC('I','Y','U','V'):
 106         case VLC_FOURCC('J','4','2','0'):
 107         case VLC_FOURCC('Y','V','1','2'):
 108
 109         case VLC_FOURCC('I','4','2','2'):
 110         case VLC_FOURCC('J','4','2','2'):
 111
 112         CASE_PACKED_YUV_422
 113             break;
 114
 115         default:
 116             /* We only want planar YUV 4:2:0 or 4:2:2 */
 117             msg_Err( p_filter, "Unsupported input chroma (%4s)",
 118                      (char*)&(p_filter->fmt_in.video.i_chroma) );
 119             return VLC_EGENERIC;
 120     }
 121
 122     /* Allocate structure */
 123     p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 124     if( p_filter->p_sys == NULL )
 125     {
 126         msg_Err( p_filter, "out of memory" );
 127         return VLC_ENOMEM;
 128     }
 129     p_filter->p_sys->projection_matrix = malloc( 9 * sizeof( int ) );
 130     if( !p_filter->p_sys->projection_matrix )
 131     {
 132         free( p_filter->p_sys );
 133         msg_Err( p_filter, "out of memory" );
 134         return VLC_ENOMEM;
 135     }
 136
 137     config_ChainParse( p_filter, FILTER_PREFIX, ppsz_filter_options,
 138                        p_filter->p_cfg );
 139
 140     p_filter->p_sys->i_color = var_CreateGetIntegerCommand( p_filter,
 141                                                FILTER_PREFIX "component" );
 142     var_AddCallback( p_filter, FILTER_PREFIX "component",
 143                      ExtractCallback, p_filter->p_sys );
 144
 145     /* Matrix won't be used for RED, GREEN or BLUE in planar formats */
 146     make_projection_matrix( p_filter, p_filter->p_sys->i_color,
 147                             p_filter->p_sys->projection_matrix );
 148
 149     p_filter->pf_video_filter = Filter;
 150
 151     return VLC_SUCCESS;
 152 }
 153
 154 /*****************************************************************************
 155  * Destroy
 156  *****************************************************************************/
 157 static void Destroy( vlc_object_t *p_this )
 158 {
 159     filter_t *p_filter = (filter_t *)p_this;
 160
 161     free( p_filter->p_sys->projection_matrix );
 162     free( p_filter->p_sys );
 163 }
 164
 165 /*****************************************************************************
 166  * Render
 167  *****************************************************************************/
 168 static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
 169 {
 170     picture_t *p_outpic;
 171
 172     if( !p_pic ) return NULL;
 173
 174     p_outpic = p_filter->pf_vout_buffer_new( p_filter );
 175     if( !p_outpic )
 176     {
 177         msg_Warn( p_filter, "can't get output picture" );
 178         if( p_pic->pf_release )
 179             p_pic->pf_release( p_pic );
 180         return NULL;
 181     }
 182
 183     switch( p_pic->format.i_chroma )
 184     {
 185         case VLC_FOURCC('I','4','2','0'):
 186         case VLC_FOURCC('I','Y','U','V'):
 187         case VLC_FOURCC('J','4','2','0'):
 188         case VLC_FOURCC('Y','V','1','2'):
 189             switch( p_filter->p_sys->i_color )
 190             {
 191                 case RED:
 192                     get_red_from_yuv420( p_pic, p_outpic,
 193                                          Y_PLANE, U_PLANE, V_PLANE );
 194                     break;
 195                 case GREEN:
 196                     get_green_from_yuv420( p_pic, p_outpic,
 197                                            Y_PLANE, U_PLANE, V_PLANE );
 198                     break;
 199                 case BLUE:
 200                     get_blue_from_yuv420( p_pic, p_outpic,
 201                                           Y_PLANE, U_PLANE, V_PLANE );
 202                     break;
 203                 default:
 204                     get_custom_from_yuv420( p_pic, p_outpic,
 205                                             Y_PLANE, U_PLANE, V_PLANE,
 206                                             p_filter->p_sys->projection_matrix);
 207                     break;
 208             }
 209             break;
 210
 211         case VLC_FOURCC('I','4','2','2'):
 212         case VLC_FOURCC('J','4','2','2'):
 213             switch( p_filter->p_sys->i_color )
 214             {
 215                 case RED:
 216                     get_red_from_yuv422( p_pic, p_outpic,
 217                                          Y_PLANE, U_PLANE, V_PLANE );
 218                     break;
 219                 case GREEN:
 220                     get_green_from_yuv422( p_pic, p_outpic,
 221                                            Y_PLANE, U_PLANE, V_PLANE );
 222                     break;
 223                 case BLUE:
 224                     get_blue_from_yuv422( p_pic, p_outpic,
 225                                           Y_PLANE, U_PLANE, V_PLANE );
 226                     break;
 227                 default:
 228                     get_custom_from_yuv422( p_pic, p_outpic,
 229                                             Y_PLANE, U_PLANE, V_PLANE,
 230                                             p_filter->p_sys->projection_matrix);
 231                     break;
 232             }
 233             break;
 234
 235         CASE_PACKED_YUV_422
 236             get_custom_from_packedyuv422( p_pic, p_outpic,
 237                                           p_filter->p_sys->projection_matrix );
 238             break;
 239
 240         default:
 241             msg_Warn( p_filter, "Unsupported input chroma (%4s)",
 242                       (char*)&(p_pic->format.i_chroma) );
 243             if( p_pic->pf_release )
 244                 p_pic->pf_release( p_pic );
 245             return NULL;
 246     }
 247
 248     p_outpic->date = p_pic->date;
 249     p_outpic->b_force = p_pic->b_force;
 250     p_outpic->i_nb_fields = p_pic->i_nb_fields;
 251     p_outpic->b_progressive = p_pic->b_progressive;
 252     p_outpic->b_top_field_first = p_pic->b_top_field_first;
 253
 254     if( p_pic->pf_release )
 255         p_pic->pf_release( p_pic );
 256
 257     return p_outpic;
 258 }
 259
 260 static inline uint8_t crop( int a )
 261 {
 262     if( a < 0 ) return 0;
 263     if( a > 255 ) return 255;
 264     else return (uint8_t)a;
 265 }
 266
 267 #define U 128
 268 #define V 128
 269
 270 static void mmult( double *res, double *a, double *b )
 271 {
 272     int i, j, k;
 273     for( i = 0; i < 3; i++ )
 274     {
 275         for( j = 0; j < 3; j++ )
 276         {
 277             res[ i*3 + j ] = 0.;
 278             for( k = 0; k < 3; k++ )
 279             {
 280                 res[ i*3 + j ] += a[ i*3 + k ] * b[ k*3 + j ];
 281             }
 282         }
 283     }
 284 }
 285 static void make_projection_matrix( filter_t *p_filter, int color, int *matrix )
 286 {
 287     double left_matrix[9] =
 288         {  76.24500,  149.68500,  29.07000,
 289           -43.02765,  -84.47235, 127.50000,
 290           127.50000, -106.76534, -20.73466 };
 291     double right_matrix[9] =
 292         { 257.00392,   0.00000,  360.31950,
 293           257.00392, -88.44438, -183.53583,
 294           257.00392, 455.41095,    0.00000 };
 295     double red = ((double)(( 0xFF0000 & color )>>16))/255.;
 296     double green = ((double)(( 0x00FF00 & color )>>8))/255.;
 297     double blue = ((double)( 0x0000FF & color ))/255.;
 298     double norm = sqrt( red*red + green*green + blue*blue );
 299     red /= norm;
 300     green /= norm;
 301     blue /= norm;
 302     /* XXX: We might still need to norm the rgb_matrix */
 303     double rgb_matrix[9] =
 304         { red*red,    red*green,   red*blue,
 305           red*green,  green*green, green*blue,
 306           red*blue,   green*blue,  blue*blue };
 307     double result1[9];
 308     double result[9];
 309     int i;
 310     msg_Dbg( p_filter, "red: %f", red );
 311     msg_Dbg( p_filter, "green: %f", green );
 312     msg_Dbg( p_filter, "blue: %f", blue );
 313     mmult( result1, rgb_matrix, right_matrix );
 314     mmult( result, left_matrix, result1 );
 315     for( i = 0; i < 9; i++ )
 316     {
 317         matrix[i] = (int)result[i];
 318     }
 319     msg_Dbg( p_filter, "Projection matrix:" );
 320     msg_Dbg( p_filter, "%6d %6d %6d", matrix[0], matrix[1], matrix[2] );
 321     msg_Dbg( p_filter, "%6d %6d %6d", matrix[3], matrix[4], matrix[5] );
 322     msg_Dbg( p_filter, "%6d %6d %6d", matrix[6], matrix[7], matrix[8] );
 323 }
 324
 325 static void get_custom_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 326                                     int yp, int up, int vp, int *m )
 327 {
 328     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 329     uint8_t *y2in;
 330     uint8_t *uin  = p_inpic->p[up].p_pixels;
 331     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 332
 333     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 334     uint8_t *y2out;
 335     uint8_t *uout  = p_outpic->p[up].p_pixels;
 336     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 337
 338     const int i_pitch = p_inpic->p[yp].i_pitch;
 339     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 340     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 341
 342     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 343     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 344
 345     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 346     while( y1in < yend )
 347     {
 348         const uint8_t *y1end = y1in + i_visible_pitch;
 349         y2in  = y1in + i_pitch;
 350         y2out = y1out + i_pitch;
 351         while( y1in < y1end )
 352         {
 353             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 354                       / 65536 + U );
 355             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 356                       / 65536 + V );
 357             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 358                        / 65536 );
 359             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 360                        / 65536 );
 361             *y2out++ = crop( (*y2in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 362                        / 65536 );
 363             *y2out++ = crop( (*y2in++ * m[0] + (*uin++ - U) * m[1] + (*vin++ -V) * m[2])
 364                        / 65536 );
 365         }
 366         y1in  += 2*i_pitch - i_visible_pitch;
 367         y1out += 2*i_pitch - i_visible_pitch;
 368         uin   += i_uv_pitch - i_uv_visible_pitch;
 369         uout  += i_uv_pitch - i_uv_visible_pitch;
 370         vin   += i_uv_pitch - i_uv_visible_pitch;
 371         vout  += i_uv_pitch - i_uv_visible_pitch;
 372     }
 373 }
 374 static void get_custom_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 375                                     int yp, int up, int vp, int *m )
 376 {
 377     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 378     uint8_t *uin  = p_inpic->p[up].p_pixels;
 379     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 380
 381     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 382     uint8_t *uout  = p_outpic->p[up].p_pixels;
 383     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 384
 385     const int i_pitch = p_inpic->p[yp].i_pitch;
 386     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 387     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 388
 389     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 390     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 391
 392     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 393     while( y1in < yend )
 394     {
 395         const uint8_t *y1end = y1in + i_visible_pitch;
 396         while( y1in < y1end )
 397         {
 398             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 399                       / 65536 + U );
 400             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 401                       / 65536 + V );
 402             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 403                        / 65536 );
 404             *y1out++ = crop( (*y1in++ * m[0] + (*uin++ -U) * m[1] + (*vin++ -V) * m[2])
 405                        / 65536 );
 406         }
 407         y1in  += i_pitch - i_visible_pitch;
 408         y1out += i_pitch - i_visible_pitch;
 409         uin   += i_uv_pitch - i_uv_visible_pitch;
 410         uout  += i_uv_pitch - i_uv_visible_pitch;
 411         vin   += i_uv_pitch - i_uv_visible_pitch;
 412         vout  += i_uv_pitch - i_uv_visible_pitch;
 413     }
 414 }
 415
 416 static void get_custom_from_packedyuv422( picture_t *p_inpic,
 417                                           picture_t *p_outpic,
 418                                           int *m )
 419 {
 420     int i_y_offset, i_u_offset, i_v_offset;
 421     if( GetPackedYuvOffsets( p_inpic->format.i_chroma, &i_y_offset,
 422                          &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 423         return;
 424
 425     uint8_t *yin = p_inpic->p->p_pixels + i_y_offset;
 426     uint8_t *uin = p_inpic->p->p_pixels + i_u_offset;
 427     uint8_t *vin = p_inpic->p->p_pixels + i_v_offset;
 428
 429     uint8_t *yout = p_outpic->p->p_pixels + i_y_offset;
 430     uint8_t *uout = p_outpic->p->p_pixels + i_u_offset;
 431     uint8_t *vout = p_outpic->p->p_pixels + i_v_offset;
 432
 433     const int i_pitch = p_inpic->p->i_pitch;
 434     const int i_visible_pitch = p_inpic->p->i_visible_pitch;
 435     const int i_visible_lines = p_inpic->p->i_visible_lines;
 436
 437     const uint8_t *yend = yin + i_visible_lines * i_pitch;
 438     while( yin < yend )
 439     {
 440         const uint8_t *ylend = yin + i_visible_pitch;
 441         while( yin < ylend )
 442         {
 443             *uout = crop( (*yin * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 444                       / 65536 + U );
 445             uout += 4;
 446             *vout = crop( (*yin * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 447                      / 65536 + V );
 448             vout += 4;
 449             *yout = crop( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 450                        / 65536 );
 451             yin  += 2;
 452             yout += 2;
 453             *yout = crop( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 454                        / 65536 );
 455             yin  += 2;
 456             yout += 2;
 457             uin  += 4;
 458             vin  += 4;
 459         }
 460         yin  += i_pitch - i_visible_pitch;
 461         yout += i_pitch - i_visible_pitch;
 462         uin  += i_pitch - i_visible_pitch;
 463         uout += i_pitch - i_visible_pitch;
 464         vin  += i_pitch - i_visible_pitch;
 465         vout += i_pitch - i_visible_pitch;
 466     }
 467 }
 468
 469 static void get_red_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 470                                  int yp, int up, int vp )
 471 {
 472     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 473     uint8_t *y2in;
 474     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 475
 476     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 477     uint8_t *y2out;
 478     uint8_t *uout  = p_outpic->p[up].p_pixels;
 479     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 480
 481     const int i_pitch = p_inpic->p[yp].i_pitch;
 482     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 483     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 484
 485     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 486     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 487
 488     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 489     while( y1in < yend )
 490     {
 491         const uint8_t *y1end = y1in + i_visible_pitch;
 492         y2in  = y1in + i_pitch;
 493         y2out = y1out + i_pitch;
 494         while( y1in < y1end )
 495         {
 496 /*
 497 19595   0   27473
 498 -11058  0   -15504
 499 32768   0   45941
 500 */
 501             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 502                       / 65536 + U );
 503             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 504                       / 65536 + V );
 505             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 506                        / 65536 );
 507             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 508                        / 65536 );
 509             *y2out++ = crop( (*y2in++ * 19594 + (*vin - V) * 27473)
 510                        / 65536 );
 511             *y2out++ = crop( (*y2in++ * 19594 + (*vin++ - V) * 27473)
 512                        / 65536 );
 513         }
 514         y1in  += 2*i_pitch - i_visible_pitch;
 515         y1out += 2*i_pitch - i_visible_pitch;
 516         uout  += i_uv_pitch - i_uv_visible_pitch;
 517         vin   += i_uv_pitch - i_uv_visible_pitch;
 518         vout  += i_uv_pitch - i_uv_visible_pitch;
 519     }
 520 }
 521
 522 static void get_green_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 523                                  int yp, int up, int vp )
 524 {
 525     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 526     uint8_t *y2in;
 527     uint8_t *uin  = p_inpic->p[up].p_pixels;
 528     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 529
 530     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 531     uint8_t *y2out;
 532     uint8_t *uout  = p_outpic->p[up].p_pixels;
 533     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 534
 535     const int i_pitch = p_inpic->p[yp].i_pitch;
 536     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 537     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 538
 539     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 540     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 541
 542     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 543     while( y1in < yend )
 544     {
 545         const uint8_t *y1end = y1in + i_visible_pitch;
 546         y2in  = y1in + i_pitch;
 547         y2out = y1out + i_pitch;
 548         while( y1in < y1end )
 549         {
 550 /*
 551 38470   -13239  -27473
 552 -21710  7471    15504
 553 -27439  9443    19595
 554 */
 555             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 556                       / 65536 + U );
 557             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 558                       / 65536 + V );
 559             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 560                        / 65536 );
 561             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 562                        / 65536 );
 563             *y2out++ = crop( (*y2in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 564                        / 65536 );
 565             *y2out++ = crop( (*y2in++ * 38470 + (*uin++ - U) * -13239 + (*vin++ -V) * -27473)
 566                        / 65536 );
 567         }
 568         y1in  += 2*i_pitch - i_visible_pitch;
 569         y1out += 2*i_pitch - i_visible_pitch;
 570         uin   += i_uv_pitch - i_uv_visible_pitch;
 571         uout  += i_uv_pitch - i_uv_visible_pitch;
 572         vin   += i_uv_pitch - i_uv_visible_pitch;
 573         vout  += i_uv_pitch - i_uv_visible_pitch;
 574     }
 575 }
 576
 577 static void get_blue_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 578                                  int yp, int up, int vp )
 579 {
 580     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 581     uint8_t *y2in;
 582     uint8_t *uin  = p_inpic->p[up].p_pixels;
 583
 584     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 585     uint8_t *y2out;
 586     uint8_t *uout  = p_outpic->p[up].p_pixels;
 587     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 588
 589     const int i_pitch = p_inpic->p[yp].i_pitch;
 590     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 591     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 592
 593     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 594     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 595
 596     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 597     while( y1in < yend )
 598     {
 599         const uint8_t *y1end = y1in + i_visible_pitch;
 600         y2in  = y1in + i_pitch;
 601         y2out = y1out + i_pitch;
 602         while( y1in < y1end )
 603         {
 604 /*
 605 7471    13239   0
 606 32768   58065   0
 607 -5329   -9443   0
 608 */
 609             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 610                       / 65536 + U );
 611             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 612                       / 65536 + V );
 613             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 614                        / 65536 );
 615             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 616                        / 65536 );
 617             *y2out++ = crop( (*y2in++ * 7471 + (*uin - U) * 13239 )
 618                        / 65536 );
 619             *y2out++ = crop( (*y2in++ * 7471 + (*uin++ - U) * 13239 )
 620                        / 65536 );
 621         }
 622         y1in  += 2*i_pitch - i_visible_pitch;
 623         y1out += 2*i_pitch - i_visible_pitch;
 624         uin   += i_uv_pitch - i_uv_visible_pitch;
 625         uout  += i_uv_pitch - i_uv_visible_pitch;
 626         vout  += i_uv_pitch - i_uv_visible_pitch;
 627     }
 628 }
 629
 630 static void get_red_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 631                                  int yp, int up, int vp )
 632 {
 633     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 634     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 635
 636     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 637     uint8_t *uout  = p_outpic->p[up].p_pixels;
 638     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 639
 640     const int i_pitch = p_inpic->p[yp].i_pitch;
 641     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 642     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 643
 644     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 645     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 646
 647     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 648     while( y1in < yend )
 649     {
 650         const uint8_t *y1end = y1in + i_visible_pitch;
 651         while( y1in < y1end )
 652         {
 653 /*
 654 19595   0   27473
 655 -11058  0   -15504
 656 32768   0   45941
 657 */
 658             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 659                       / 65536 + U );
 660             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 661                       / 65536 + V );
 662             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 663                        / 65536 );
 664             *y1out++ = crop( (*y1in++ * 19595 + (*vin++ - V) * 27473)
 665                        / 65536 );
 666         }
 667         y1in  += i_pitch - i_visible_pitch;
 668         y1out += i_pitch - i_visible_pitch;
 669         uout  += i_uv_pitch - i_uv_visible_pitch;
 670         vin   += i_uv_pitch - i_uv_visible_pitch;
 671         vout  += i_uv_pitch - i_uv_visible_pitch;
 672     }
 673 }
 674
 675 static void get_green_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 676                                    int yp, int up, int vp )
 677 {
 678     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 679     uint8_t *uin  = p_inpic->p[up].p_pixels;
 680     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 681
 682     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 683     uint8_t *uout  = p_outpic->p[up].p_pixels;
 684     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 685
 686     const int i_pitch = p_inpic->p[yp].i_pitch;
 687     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 688     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 689
 690     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 691     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 692
 693     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 694     while( y1in < yend )
 695     {
 696         const uint8_t *y1end = y1in + i_visible_pitch;
 697         while( y1in < y1end )
 698         {
 699 /*
 700 38470   -13239  -27473
 701 -21710  7471    15504
 702 -27439  9443    19595
 703 */
 704             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 705                       / 65536 + U );
 706             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 707                       / 65536 + V );
 708             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 709                        / 65536 );
 710             *y1out++ = crop( (*y1in++ * 38470 + (*uin++-U) * -13239 + (*vin++-V) * -27473)
 711                        / 65536 );
 712         }
 713         y1in  += i_pitch - i_visible_pitch;
 714         y1out += i_pitch - i_visible_pitch;
 715         uin   += i_uv_pitch - i_uv_visible_pitch;
 716         uout  += i_uv_pitch - i_uv_visible_pitch;
 717         vin   += i_uv_pitch - i_uv_visible_pitch;
 718         vout  += i_uv_pitch - i_uv_visible_pitch;
 719     }
 720 }
 721
 722 static void get_blue_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 723                                  int yp, int up, int vp )
 724 {
 725     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 726     uint8_t *uin  = p_inpic->p[up].p_pixels;
 727
 728     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 729     uint8_t *uout  = p_outpic->p[up].p_pixels;
 730     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 731
 732     const int i_pitch = p_inpic->p[yp].i_pitch;
 733     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 734     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 735
 736     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 737     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 738
 739     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 740     while( y1in < yend )
 741     {
 742         const uint8_t *y1end = y1in + i_visible_pitch;
 743         while( y1in < y1end )
 744         {
 745 /*
 746 7471    13239   0
 747 32768   58065   0
 748 -5329   -9443   0
 749 */
 750             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 751                       / 65536 + U );
 752             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 753                       / 65536 + V );
 754             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 755                        / 65536 );
 756             *y1out++ = crop( (*y1in++ * 7471 + (*uin++ - U) * 13239 )
 757                        / 65536 );
 758         }
 759         y1in  += i_pitch - i_visible_pitch;
 760         y1out += i_pitch - i_visible_pitch;
 761         uin   += i_uv_pitch - i_uv_visible_pitch;
 762         uout  += i_uv_pitch - i_uv_visible_pitch;
 763         vout  += i_uv_pitch - i_uv_visible_pitch;
 764     }
 765 }
 766
 767 static int ExtractCallback( vlc_object_t *p_this, char const *psz_var,
 768                             vlc_value_t oldval, vlc_value_t newval,
 769                             void *p_data )
 770 {
 771     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 772
 773     if( !strcmp( psz_var, FILTER_PREFIX "component" ) )
 774     {
 775         p_sys->i_color = newval.i_int;
 776         /* Matrix won't be used for RED, GREEN or BLUE in planar formats */
 777         make_projection_matrix( (filter_t *)p_this, p_sys->i_color,
 778                                 p_sys->projection_matrix );
 779     }
 780     else
 781     {
 782         msg_Warn( p_this, "Unknown callback command." );
 783     }
 784     return VLC_SUCCESS;
 785 }