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

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