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, NULL )
  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_CODEC_I420:
 110         case VLC_CODEC_J420:
 111         case VLC_CODEC_YV12:
 112
 113         case VLC_CODEC_I422:
 114         case VLC_CODEC_J422:
 115
 116         CASE_PACKED_YUV_422
 117             break;
 118
 119         default:
 120             /* We only want planar YUV 4:2:0 or 4:2:2 */
 121             msg_Err( p_filter, "Unsupported input chroma (%4s)",
 122                      (char*)&(p_filter->fmt_in.video.i_chroma) );
 123             return VLC_EGENERIC;
 124     }
 125
 126     /* Allocate structure */
 127     p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 128     if( p_filter->p_sys == NULL )
 129         return VLC_ENOMEM;
 130     p_filter->p_sys->projection_matrix = malloc( 9 * sizeof( int ) );
 131     if( !p_filter->p_sys->projection_matrix )
 132     {
 133         free( p_filter->p_sys );
 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 = filter_NewPicture( p_filter );
 175     if( !p_outpic )
 176     {
 177         picture_Release( p_pic );
 178         return NULL;
 179     }
 180
 181     switch( p_pic->format.i_chroma )
 182     {
 183         case VLC_CODEC_I420:
 184         case VLC_CODEC_J420:
 185         case VLC_CODEC_YV12:
 186             switch( p_filter->p_sys->i_color )
 187             {
 188                 case RED:
 189                     get_red_from_yuv420( p_pic, p_outpic,
 190                                          Y_PLANE, U_PLANE, V_PLANE );
 191                     break;
 192                 case GREEN:
 193                     get_green_from_yuv420( p_pic, p_outpic,
 194                                            Y_PLANE, U_PLANE, V_PLANE );
 195                     break;
 196                 case BLUE:
 197                     get_blue_from_yuv420( p_pic, p_outpic,
 198                                           Y_PLANE, U_PLANE, V_PLANE );
 199                     break;
 200                 default:
 201                     get_custom_from_yuv420( p_pic, p_outpic,
 202                                             Y_PLANE, U_PLANE, V_PLANE,
 203                                             p_filter->p_sys->projection_matrix);
 204                     break;
 205             }
 206             break;
 207
 208         case VLC_CODEC_I422:
 209         case VLC_CODEC_J422:
 210             switch( p_filter->p_sys->i_color )
 211             {
 212                 case RED:
 213                     get_red_from_yuv422( p_pic, p_outpic,
 214                                          Y_PLANE, U_PLANE, V_PLANE );
 215                     break;
 216                 case GREEN:
 217                     get_green_from_yuv422( p_pic, p_outpic,
 218                                            Y_PLANE, U_PLANE, V_PLANE );
 219                     break;
 220                 case BLUE:
 221                     get_blue_from_yuv422( p_pic, p_outpic,
 222                                           Y_PLANE, U_PLANE, V_PLANE );
 223                     break;
 224                 default:
 225                     get_custom_from_yuv422( p_pic, p_outpic,
 226                                             Y_PLANE, U_PLANE, V_PLANE,
 227                                             p_filter->p_sys->projection_matrix);
 228                     break;
 229             }
 230             break;
 231
 232         CASE_PACKED_YUV_422
 233             get_custom_from_packedyuv422( p_pic, p_outpic,
 234                                           p_filter->p_sys->projection_matrix );
 235             break;
 236
 237         default:
 238             msg_Warn( p_filter, "Unsupported input chroma (%4s)",
 239                       (char*)&(p_pic->format.i_chroma) );
 240             picture_Release( p_pic );
 241             return NULL;
 242     }
 243
 244     return CopyInfoAndRelease( p_outpic, p_pic );
 245 }
 246
 247 static inline uint8_t crop( int a )
 248 {
 249     if( a < 0 ) return 0;
 250     if( a > 255 ) return 255;
 251     else return (uint8_t)a;
 252 }
 253
 254 #define U 128
 255 #define V 128
 256
 257 static void mmult( double *res, double *a, double *b )
 258 {
 259     int i, j, k;
 260     for( i = 0; i < 3; i++ )
 261     {
 262         for( j = 0; j < 3; j++ )
 263         {
 264             res[ i*3 + j ] = 0.;
 265             for( k = 0; k < 3; k++ )
 266             {
 267                 res[ i*3 + j ] += a[ i*3 + k ] * b[ k*3 + j ];
 268             }
 269         }
 270     }
 271 }
 272 static void make_projection_matrix( filter_t *p_filter, int color, int *matrix )
 273 {
 274     double left_matrix[9] =
 275         {  76.24500,  149.68500,  29.07000,
 276           -43.02765,  -84.47235, 127.50000,
 277           127.50000, -106.76534, -20.73466 };
 278     double right_matrix[9] =
 279         { 257.00392,   0.00000,  360.31950,
 280           257.00392, -88.44438, -183.53583,
 281           257.00392, 455.41095,    0.00000 };
 282     double red = ((double)(( 0xFF0000 & color )>>16))/255.;
 283     double green = ((double)(( 0x00FF00 & color )>>8))/255.;
 284     double blue = ((double)( 0x0000FF & color ))/255.;
 285     double norm = sqrt( red*red + green*green + blue*blue );
 286     red /= norm;
 287     green /= norm;
 288     blue /= norm;
 289     /* XXX: We might still need to norm the rgb_matrix */
 290     double rgb_matrix[9] =
 291         { red*red,    red*green,   red*blue,
 292           red*green,  green*green, green*blue,
 293           red*blue,   green*blue,  blue*blue };
 294     double result1[9];
 295     double result[9];
 296     int i;
 297     msg_Dbg( p_filter, "red: %f", red );
 298     msg_Dbg( p_filter, "green: %f", green );
 299     msg_Dbg( p_filter, "blue: %f", blue );
 300     mmult( result1, rgb_matrix, right_matrix );
 301     mmult( result, left_matrix, result1 );
 302     for( i = 0; i < 9; i++ )
 303     {
 304         matrix[i] = (int)result[i];
 305     }
 306     msg_Dbg( p_filter, "Projection matrix:" );
 307     msg_Dbg( p_filter, "%6d %6d %6d", matrix[0], matrix[1], matrix[2] );
 308     msg_Dbg( p_filter, "%6d %6d %6d", matrix[3], matrix[4], matrix[5] );
 309     msg_Dbg( p_filter, "%6d %6d %6d", matrix[6], matrix[7], matrix[8] );
 310 }
 311
 312 static void get_custom_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 313                                     int yp, int up, int vp, int *m )
 314 {
 315     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 316     uint8_t *y2in;
 317     uint8_t *uin  = p_inpic->p[up].p_pixels;
 318     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 319
 320     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 321     uint8_t *y2out;
 322     uint8_t *uout  = p_outpic->p[up].p_pixels;
 323     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 324
 325     const int i_pitch = p_inpic->p[yp].i_pitch;
 326     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 327     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 328
 329     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 330     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 331
 332     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 333     while( y1in < yend )
 334     {
 335         const uint8_t *y1end = y1in + i_visible_pitch;
 336         y2in  = y1in + i_pitch;
 337         y2out = y1out + i_pitch;
 338         while( y1in < y1end )
 339         {
 340             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 341                       / 65536 + U );
 342             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 343                       / 65536 + V );
 344             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 345                        / 65536 );
 346             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 347                        / 65536 );
 348             *y2out++ = crop( (*y2in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 349                        / 65536 );
 350             *y2out++ = crop( (*y2in++ * m[0] + (*uin++ - U) * m[1] + (*vin++ -V) * m[2])
 351                        / 65536 );
 352         }
 353         y1in  += 2*i_pitch - i_visible_pitch;
 354         y1out += 2*i_pitch - i_visible_pitch;
 355         uin   += i_uv_pitch - i_uv_visible_pitch;
 356         uout  += i_uv_pitch - i_uv_visible_pitch;
 357         vin   += i_uv_pitch - i_uv_visible_pitch;
 358         vout  += i_uv_pitch - i_uv_visible_pitch;
 359     }
 360 }
 361 static void get_custom_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 362                                     int yp, int up, int vp, int *m )
 363 {
 364     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 365     uint8_t *uin  = p_inpic->p[up].p_pixels;
 366     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 367
 368     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 369     uint8_t *uout  = p_outpic->p[up].p_pixels;
 370     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 371
 372     const int i_pitch = p_inpic->p[yp].i_pitch;
 373     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 374     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 375
 376     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 377     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 378
 379     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 380     while( y1in < yend )
 381     {
 382         const uint8_t *y1end = y1in + i_visible_pitch;
 383         while( y1in < y1end )
 384         {
 385             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 386                       / 65536 + U );
 387             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 388                       / 65536 + V );
 389             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 390                        / 65536 );
 391             *y1out++ = crop( (*y1in++ * m[0] + (*uin++ -U) * m[1] + (*vin++ -V) * m[2])
 392                        / 65536 );
 393         }
 394         y1in  += i_pitch - i_visible_pitch;
 395         y1out += i_pitch - i_visible_pitch;
 396         uin   += i_uv_pitch - i_uv_visible_pitch;
 397         uout  += i_uv_pitch - i_uv_visible_pitch;
 398         vin   += i_uv_pitch - i_uv_visible_pitch;
 399         vout  += i_uv_pitch - i_uv_visible_pitch;
 400     }
 401 }
 402
 403 static void get_custom_from_packedyuv422( picture_t *p_inpic,
 404                                           picture_t *p_outpic,
 405                                           int *m )
 406 {
 407     int i_y_offset, i_u_offset, i_v_offset;
 408     if( GetPackedYuvOffsets( p_inpic->format.i_chroma, &i_y_offset,
 409                          &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 410         return;
 411
 412     uint8_t *yin = p_inpic->p->p_pixels + i_y_offset;
 413     uint8_t *uin = p_inpic->p->p_pixels + i_u_offset;
 414     uint8_t *vin = p_inpic->p->p_pixels + i_v_offset;
 415
 416     uint8_t *yout = p_outpic->p->p_pixels + i_y_offset;
 417     uint8_t *uout = p_outpic->p->p_pixels + i_u_offset;
 418     uint8_t *vout = p_outpic->p->p_pixels + i_v_offset;
 419
 420     const int i_pitch = p_inpic->p->i_pitch;
 421     const int i_visible_pitch = p_inpic->p->i_visible_pitch;
 422     const int i_visible_lines = p_inpic->p->i_visible_lines;
 423
 424     const uint8_t *yend = yin + i_visible_lines * i_pitch;
 425     while( yin < yend )
 426     {
 427         const uint8_t *ylend = yin + i_visible_pitch;
 428         while( yin < ylend )
 429         {
 430             *uout = crop( (*yin * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 431                       / 65536 + U );
 432             uout += 4;
 433             *vout = crop( (*yin * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 434                      / 65536 + V );
 435             vout += 4;
 436             *yout = crop( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 437                        / 65536 );
 438             yin  += 2;
 439             yout += 2;
 440             *yout = crop( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 441                        / 65536 );
 442             yin  += 2;
 443             yout += 2;
 444             uin  += 4;
 445             vin  += 4;
 446         }
 447         yin  += i_pitch - i_visible_pitch;
 448         yout += i_pitch - i_visible_pitch;
 449         uin  += i_pitch - i_visible_pitch;
 450         uout += i_pitch - i_visible_pitch;
 451         vin  += i_pitch - i_visible_pitch;
 452         vout += i_pitch - i_visible_pitch;
 453     }
 454 }
 455
 456 static void get_red_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 457                                  int yp, int up, int vp )
 458 {
 459     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 460     uint8_t *y2in;
 461     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 462
 463     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 464     uint8_t *y2out;
 465     uint8_t *uout  = p_outpic->p[up].p_pixels;
 466     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 467
 468     const int i_pitch = p_inpic->p[yp].i_pitch;
 469     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 470     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 471
 472     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 473     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 474
 475     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 476     while( y1in < yend )
 477     {
 478         const uint8_t *y1end = y1in + i_visible_pitch;
 479         y2in  = y1in + i_pitch;
 480         y2out = y1out + i_pitch;
 481         while( y1in < y1end )
 482         {
 483 /*
 484 19595   0   27473
 485 -11058  0   -15504
 486 32768   0   45941
 487 */
 488             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 489                       / 65536 + U );
 490             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 491                       / 65536 + V );
 492             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 493                        / 65536 );
 494             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 495                        / 65536 );
 496             *y2out++ = crop( (*y2in++ * 19594 + (*vin - V) * 27473)
 497                        / 65536 );
 498             *y2out++ = crop( (*y2in++ * 19594 + (*vin++ - V) * 27473)
 499                        / 65536 );
 500         }
 501         y1in  += 2*i_pitch - i_visible_pitch;
 502         y1out += 2*i_pitch - i_visible_pitch;
 503         uout  += i_uv_pitch - i_uv_visible_pitch;
 504         vin   += i_uv_pitch - i_uv_visible_pitch;
 505         vout  += i_uv_pitch - i_uv_visible_pitch;
 506     }
 507 }
 508
 509 static void get_green_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 510                                  int yp, int up, int vp )
 511 {
 512     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 513     uint8_t *y2in;
 514     uint8_t *uin  = p_inpic->p[up].p_pixels;
 515     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 516
 517     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 518     uint8_t *y2out;
 519     uint8_t *uout  = p_outpic->p[up].p_pixels;
 520     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 521
 522     const int i_pitch = p_inpic->p[yp].i_pitch;
 523     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 524     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 525
 526     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 527     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 528
 529     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 530     while( y1in < yend )
 531     {
 532         const uint8_t *y1end = y1in + i_visible_pitch;
 533         y2in  = y1in + i_pitch;
 534         y2out = y1out + i_pitch;
 535         while( y1in < y1end )
 536         {
 537 /*
 538 38470   -13239  -27473
 539 -21710  7471    15504
 540 -27439  9443    19595
 541 */
 542             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 543                       / 65536 + U );
 544             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 545                       / 65536 + V );
 546             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 547                        / 65536 );
 548             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 549                        / 65536 );
 550             *y2out++ = crop( (*y2in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 551                        / 65536 );
 552             *y2out++ = crop( (*y2in++ * 38470 + (*uin++ - U) * -13239 + (*vin++ -V) * -27473)
 553                        / 65536 );
 554         }
 555         y1in  += 2*i_pitch - i_visible_pitch;
 556         y1out += 2*i_pitch - i_visible_pitch;
 557         uin   += i_uv_pitch - i_uv_visible_pitch;
 558         uout  += i_uv_pitch - i_uv_visible_pitch;
 559         vin   += i_uv_pitch - i_uv_visible_pitch;
 560         vout  += i_uv_pitch - i_uv_visible_pitch;
 561     }
 562 }
 563
 564 static void get_blue_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 565                                  int yp, int up, int vp )
 566 {
 567     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 568     uint8_t *y2in;
 569     uint8_t *uin  = p_inpic->p[up].p_pixels;
 570
 571     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 572     uint8_t *y2out;
 573     uint8_t *uout  = p_outpic->p[up].p_pixels;
 574     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 575
 576     const int i_pitch = p_inpic->p[yp].i_pitch;
 577     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 578     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 579
 580     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 581     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 582
 583     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 584     while( y1in < yend )
 585     {
 586         const uint8_t *y1end = y1in + i_visible_pitch;
 587         y2in  = y1in + i_pitch;
 588         y2out = y1out + i_pitch;
 589         while( y1in < y1end )
 590         {
 591 /*
 592 7471    13239   0
 593 32768   58065   0
 594 -5329   -9443   0
 595 */
 596             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 597                       / 65536 + U );
 598             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 599                       / 65536 + V );
 600             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 601                        / 65536 );
 602             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 603                        / 65536 );
 604             *y2out++ = crop( (*y2in++ * 7471 + (*uin - U) * 13239 )
 605                        / 65536 );
 606             *y2out++ = crop( (*y2in++ * 7471 + (*uin++ - U) * 13239 )
 607                        / 65536 );
 608         }
 609         y1in  += 2*i_pitch - i_visible_pitch;
 610         y1out += 2*i_pitch - i_visible_pitch;
 611         uin   += i_uv_pitch - i_uv_visible_pitch;
 612         uout  += i_uv_pitch - i_uv_visible_pitch;
 613         vout  += i_uv_pitch - i_uv_visible_pitch;
 614     }
 615 }
 616
 617 static void get_red_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 618                                  int yp, int up, int vp )
 619 {
 620     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 621     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 622
 623     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 624     uint8_t *uout  = p_outpic->p[up].p_pixels;
 625     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 626
 627     const int i_pitch = p_inpic->p[yp].i_pitch;
 628     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 629     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 630
 631     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 632     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 633
 634     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 635     while( y1in < yend )
 636     {
 637         const uint8_t *y1end = y1in + i_visible_pitch;
 638         while( y1in < y1end )
 639         {
 640 /*
 641 19595   0   27473
 642 -11058  0   -15504
 643 32768   0   45941
 644 */
 645             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 646                       / 65536 + U );
 647             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 648                       / 65536 + V );
 649             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 650                        / 65536 );
 651             *y1out++ = crop( (*y1in++ * 19595 + (*vin++ - V) * 27473)
 652                        / 65536 );
 653         }
 654         y1in  += i_pitch - i_visible_pitch;
 655         y1out += i_pitch - i_visible_pitch;
 656         uout  += i_uv_pitch - i_uv_visible_pitch;
 657         vin   += i_uv_pitch - i_uv_visible_pitch;
 658         vout  += i_uv_pitch - i_uv_visible_pitch;
 659     }
 660 }
 661
 662 static void get_green_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 663                                    int yp, int up, int vp )
 664 {
 665     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 666     uint8_t *uin  = p_inpic->p[up].p_pixels;
 667     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 668
 669     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 670     uint8_t *uout  = p_outpic->p[up].p_pixels;
 671     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 672
 673     const int i_pitch = p_inpic->p[yp].i_pitch;
 674     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 675     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 676
 677     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 678     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 679
 680     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 681     while( y1in < yend )
 682     {
 683         const uint8_t *y1end = y1in + i_visible_pitch;
 684         while( y1in < y1end )
 685         {
 686 /*
 687 38470   -13239  -27473
 688 -21710  7471    15504
 689 -27439  9443    19595
 690 */
 691             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 692                       / 65536 + U );
 693             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 694                       / 65536 + V );
 695             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 696                        / 65536 );
 697             *y1out++ = crop( (*y1in++ * 38470 + (*uin++-U) * -13239 + (*vin++-V) * -27473)
 698                        / 65536 );
 699         }
 700         y1in  += i_pitch - i_visible_pitch;
 701         y1out += i_pitch - i_visible_pitch;
 702         uin   += i_uv_pitch - i_uv_visible_pitch;
 703         uout  += i_uv_pitch - i_uv_visible_pitch;
 704         vin   += i_uv_pitch - i_uv_visible_pitch;
 705         vout  += i_uv_pitch - i_uv_visible_pitch;
 706     }
 707 }
 708
 709 static void get_blue_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 710                                  int yp, int up, int vp )
 711 {
 712     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 713     uint8_t *uin  = p_inpic->p[up].p_pixels;
 714
 715     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 716     uint8_t *uout  = p_outpic->p[up].p_pixels;
 717     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 718
 719     const int i_pitch = p_inpic->p[yp].i_pitch;
 720     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 721     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 722
 723     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 724     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 725
 726     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 727     while( y1in < yend )
 728     {
 729         const uint8_t *y1end = y1in + i_visible_pitch;
 730         while( y1in < y1end )
 731         {
 732 /*
 733 7471    13239   0
 734 32768   58065   0
 735 -5329   -9443   0
 736 */
 737             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 738                       / 65536 + U );
 739             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 740                       / 65536 + V );
 741             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 742                        / 65536 );
 743             *y1out++ = crop( (*y1in++ * 7471 + (*uin++ - U) * 13239 )
 744                        / 65536 );
 745         }
 746         y1in  += i_pitch - i_visible_pitch;
 747         y1out += i_pitch - i_visible_pitch;
 748         uin   += i_uv_pitch - i_uv_visible_pitch;
 749         uout  += i_uv_pitch - i_uv_visible_pitch;
 750         vout  += i_uv_pitch - i_uv_visible_pitch;
 751     }
 752 }
 753
 754 static int ExtractCallback( vlc_object_t *p_this, char const *psz_var,
 755                             vlc_value_t oldval, vlc_value_t newval,
 756                             void *p_data )
 757 {
 758     VLC_UNUSED(oldval);
 759     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 760
 761     if( !strcmp( psz_var, FILTER_PREFIX "component" ) )
 762     {
 763         p_sys->i_color = newval.i_int;
 764         /* Matrix won't be used for RED, GREEN or BLUE in planar formats */
 765         make_projection_matrix( (filter_t *)p_this, p_sys->i_color,
 766                                 p_sys->projection_matrix );
 767     }
 768     else
 769     {
 770         msg_Warn( p_this, "Unknown callback command." );
 771     }
 772     return VLC_SUCCESS;
 773 }