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_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 = filter_NewPicture( p_filter );
 176     if( !p_outpic )
 177     {
 178         picture_Release( p_pic );
 179         return NULL;
 180     }
 181
 182     switch( p_pic->format.i_chroma )
 183     {
 184         case VLC_FOURCC('I','4','2','0'):
 185         case VLC_FOURCC('I','Y','U','V'):
 186         case VLC_FOURCC('J','4','2','0'):
 187         case VLC_FOURCC('Y','V','1','2'):
 188             switch( p_filter->p_sys->i_color )
 189             {
 190                 case RED:
 191                     get_red_from_yuv420( p_pic, p_outpic,
 192                                          Y_PLANE, U_PLANE, V_PLANE );
 193                     break;
 194                 case GREEN:
 195                     get_green_from_yuv420( p_pic, p_outpic,
 196                                            Y_PLANE, U_PLANE, V_PLANE );
 197                     break;
 198                 case BLUE:
 199                     get_blue_from_yuv420( p_pic, p_outpic,
 200                                           Y_PLANE, U_PLANE, V_PLANE );
 201                     break;
 202                 default:
 203                     get_custom_from_yuv420( p_pic, p_outpic,
 204                                             Y_PLANE, U_PLANE, V_PLANE,
 205                                             p_filter->p_sys->projection_matrix);
 206                     break;
 207             }
 208             break;
 209
 210         case VLC_FOURCC('I','4','2','2'):
 211         case VLC_FOURCC('J','4','2','2'):
 212             switch( p_filter->p_sys->i_color )
 213             {
 214                 case RED:
 215                     get_red_from_yuv422( p_pic, p_outpic,
 216                                          Y_PLANE, U_PLANE, V_PLANE );
 217                     break;
 218                 case GREEN:
 219                     get_green_from_yuv422( p_pic, p_outpic,
 220                                            Y_PLANE, U_PLANE, V_PLANE );
 221                     break;
 222                 case BLUE:
 223                     get_blue_from_yuv422( p_pic, p_outpic,
 224                                           Y_PLANE, U_PLANE, V_PLANE );
 225                     break;
 226                 default:
 227                     get_custom_from_yuv422( p_pic, p_outpic,
 228                                             Y_PLANE, U_PLANE, V_PLANE,
 229                                             p_filter->p_sys->projection_matrix);
 230                     break;
 231             }
 232             break;
 233
 234         CASE_PACKED_YUV_422
 235             get_custom_from_packedyuv422( p_pic, p_outpic,
 236                                           p_filter->p_sys->projection_matrix );
 237             break;
 238
 239         default:
 240             msg_Warn( p_filter, "Unsupported input chroma (%4s)",
 241                       (char*)&(p_pic->format.i_chroma) );
 242             picture_Release( p_pic );
 243             return NULL;
 244     }
 245
 246     return CopyInfoAndRelease( p_outpic, p_pic );
 247 }
 248
 249 static inline uint8_t crop( int a )
 250 {
 251     if( a < 0 ) return 0;
 252     if( a > 255 ) return 255;
 253     else return (uint8_t)a;
 254 }
 255
 256 #define U 128
 257 #define V 128
 258
 259 static void mmult( double *res, double *a, double *b )
 260 {
 261     int i, j, k;
 262     for( i = 0; i < 3; i++ )
 263     {
 264         for( j = 0; j < 3; j++ )
 265         {
 266             res[ i*3 + j ] = 0.;
 267             for( k = 0; k < 3; k++ )
 268             {
 269                 res[ i*3 + j ] += a[ i*3 + k ] * b[ k*3 + j ];
 270             }
 271         }
 272     }
 273 }
 274 static void make_projection_matrix( filter_t *p_filter, int color, int *matrix )
 275 {
 276     double left_matrix[9] =
 277         {  76.24500,  149.68500,  29.07000,
 278           -43.02765,  -84.47235, 127.50000,
 279           127.50000, -106.76534, -20.73466 };
 280     double right_matrix[9] =
 281         { 257.00392,   0.00000,  360.31950,
 282           257.00392, -88.44438, -183.53583,
 283           257.00392, 455.41095,    0.00000 };
 284     double red = ((double)(( 0xFF0000 & color )>>16))/255.;
 285     double green = ((double)(( 0x00FF00 & color )>>8))/255.;
 286     double blue = ((double)( 0x0000FF & color ))/255.;
 287     double norm = sqrt( red*red + green*green + blue*blue );
 288     red /= norm;
 289     green /= norm;
 290     blue /= norm;
 291     /* XXX: We might still need to norm the rgb_matrix */
 292     double rgb_matrix[9] =
 293         { red*red,    red*green,   red*blue,
 294           red*green,  green*green, green*blue,
 295           red*blue,   green*blue,  blue*blue };
 296     double result1[9];
 297     double result[9];
 298     int i;
 299     msg_Dbg( p_filter, "red: %f", red );
 300     msg_Dbg( p_filter, "green: %f", green );
 301     msg_Dbg( p_filter, "blue: %f", blue );
 302     mmult( result1, rgb_matrix, right_matrix );
 303     mmult( result, left_matrix, result1 );
 304     for( i = 0; i < 9; i++ )
 305     {
 306         matrix[i] = (int)result[i];
 307     }
 308     msg_Dbg( p_filter, "Projection matrix:" );
 309     msg_Dbg( p_filter, "%6d %6d %6d", matrix[0], matrix[1], matrix[2] );
 310     msg_Dbg( p_filter, "%6d %6d %6d", matrix[3], matrix[4], matrix[5] );
 311     msg_Dbg( p_filter, "%6d %6d %6d", matrix[6], matrix[7], matrix[8] );
 312 }
 313
 314 static void get_custom_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 315                                     int yp, int up, int vp, int *m )
 316 {
 317     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 318     uint8_t *y2in;
 319     uint8_t *uin  = p_inpic->p[up].p_pixels;
 320     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 321
 322     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 323     uint8_t *y2out;
 324     uint8_t *uout  = p_outpic->p[up].p_pixels;
 325     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 326
 327     const int i_pitch = p_inpic->p[yp].i_pitch;
 328     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 329     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 330
 331     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 332     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 333
 334     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 335     while( y1in < yend )
 336     {
 337         const uint8_t *y1end = y1in + i_visible_pitch;
 338         y2in  = y1in + i_pitch;
 339         y2out = y1out + i_pitch;
 340         while( y1in < y1end )
 341         {
 342             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 343                       / 65536 + U );
 344             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 345                       / 65536 + V );
 346             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 347                        / 65536 );
 348             *y1out++ = crop( (*y1in++ * 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             *y2out++ = crop( (*y2in++ * m[0] + (*uin++ - U) * m[1] + (*vin++ -V) * m[2])
 353                        / 65536 );
 354         }
 355         y1in  += 2*i_pitch - i_visible_pitch;
 356         y1out += 2*i_pitch - i_visible_pitch;
 357         uin   += i_uv_pitch - i_uv_visible_pitch;
 358         uout  += i_uv_pitch - i_uv_visible_pitch;
 359         vin   += i_uv_pitch - i_uv_visible_pitch;
 360         vout  += i_uv_pitch - i_uv_visible_pitch;
 361     }
 362 }
 363 static void get_custom_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 364                                     int yp, int up, int vp, int *m )
 365 {
 366     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 367     uint8_t *uin  = p_inpic->p[up].p_pixels;
 368     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 369
 370     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 371     uint8_t *uout  = p_outpic->p[up].p_pixels;
 372     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 373
 374     const int i_pitch = p_inpic->p[yp].i_pitch;
 375     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 376     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 377
 378     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 379     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 380
 381     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 382     while( y1in < yend )
 383     {
 384         const uint8_t *y1end = y1in + i_visible_pitch;
 385         while( y1in < y1end )
 386         {
 387             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 388                       / 65536 + U );
 389             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 390                       / 65536 + V );
 391             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 392                        / 65536 );
 393             *y1out++ = crop( (*y1in++ * m[0] + (*uin++ -U) * m[1] + (*vin++ -V) * m[2])
 394                        / 65536 );
 395         }
 396         y1in  += i_pitch - i_visible_pitch;
 397         y1out += i_pitch - i_visible_pitch;
 398         uin   += i_uv_pitch - i_uv_visible_pitch;
 399         uout  += i_uv_pitch - i_uv_visible_pitch;
 400         vin   += i_uv_pitch - i_uv_visible_pitch;
 401         vout  += i_uv_pitch - i_uv_visible_pitch;
 402     }
 403 }
 404
 405 static void get_custom_from_packedyuv422( picture_t *p_inpic,
 406                                           picture_t *p_outpic,
 407                                           int *m )
 408 {
 409     int i_y_offset, i_u_offset, i_v_offset;
 410     if( GetPackedYuvOffsets( p_inpic->format.i_chroma, &i_y_offset,
 411                          &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 412         return;
 413
 414     uint8_t *yin = p_inpic->p->p_pixels + i_y_offset;
 415     uint8_t *uin = p_inpic->p->p_pixels + i_u_offset;
 416     uint8_t *vin = p_inpic->p->p_pixels + i_v_offset;
 417
 418     uint8_t *yout = p_outpic->p->p_pixels + i_y_offset;
 419     uint8_t *uout = p_outpic->p->p_pixels + i_u_offset;
 420     uint8_t *vout = p_outpic->p->p_pixels + i_v_offset;
 421
 422     const int i_pitch = p_inpic->p->i_pitch;
 423     const int i_visible_pitch = p_inpic->p->i_visible_pitch;
 424     const int i_visible_lines = p_inpic->p->i_visible_lines;
 425
 426     const uint8_t *yend = yin + i_visible_lines * i_pitch;
 427     while( yin < yend )
 428     {
 429         const uint8_t *ylend = yin + i_visible_pitch;
 430         while( yin < ylend )
 431         {
 432             *uout = crop( (*yin * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 433                       / 65536 + U );
 434             uout += 4;
 435             *vout = crop( (*yin * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 436                      / 65536 + V );
 437             vout += 4;
 438             *yout = crop( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 439                        / 65536 );
 440             yin  += 2;
 441             yout += 2;
 442             *yout = crop( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 443                        / 65536 );
 444             yin  += 2;
 445             yout += 2;
 446             uin  += 4;
 447             vin  += 4;
 448         }
 449         yin  += i_pitch - i_visible_pitch;
 450         yout += i_pitch - i_visible_pitch;
 451         uin  += i_pitch - i_visible_pitch;
 452         uout += i_pitch - i_visible_pitch;
 453         vin  += i_pitch - i_visible_pitch;
 454         vout += i_pitch - i_visible_pitch;
 455     }
 456 }
 457
 458 static void get_red_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 459                                  int yp, int up, int vp )
 460 {
 461     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 462     uint8_t *y2in;
 463     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 464
 465     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 466     uint8_t *y2out;
 467     uint8_t *uout  = p_outpic->p[up].p_pixels;
 468     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 469
 470     const int i_pitch = p_inpic->p[yp].i_pitch;
 471     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 472     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 473
 474     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 475     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 476
 477     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 478     while( y1in < yend )
 479     {
 480         const uint8_t *y1end = y1in + i_visible_pitch;
 481         y2in  = y1in + i_pitch;
 482         y2out = y1out + i_pitch;
 483         while( y1in < y1end )
 484         {
 485 /*
 486 19595   0   27473
 487 -11058  0   -15504
 488 32768   0   45941
 489 */
 490             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 491                       / 65536 + U );
 492             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 493                       / 65536 + V );
 494             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 495                        / 65536 );
 496             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 497                        / 65536 );
 498             *y2out++ = crop( (*y2in++ * 19594 + (*vin - V) * 27473)
 499                        / 65536 );
 500             *y2out++ = crop( (*y2in++ * 19594 + (*vin++ - V) * 27473)
 501                        / 65536 );
 502         }
 503         y1in  += 2*i_pitch - i_visible_pitch;
 504         y1out += 2*i_pitch - i_visible_pitch;
 505         uout  += i_uv_pitch - i_uv_visible_pitch;
 506         vin   += i_uv_pitch - i_uv_visible_pitch;
 507         vout  += i_uv_pitch - i_uv_visible_pitch;
 508     }
 509 }
 510
 511 static void get_green_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 512                                  int yp, int up, int vp )
 513 {
 514     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 515     uint8_t *y2in;
 516     uint8_t *uin  = p_inpic->p[up].p_pixels;
 517     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 518
 519     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 520     uint8_t *y2out;
 521     uint8_t *uout  = p_outpic->p[up].p_pixels;
 522     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 523
 524     const int i_pitch = p_inpic->p[yp].i_pitch;
 525     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 526     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 527
 528     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 529     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 530
 531     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 532     while( y1in < yend )
 533     {
 534         const uint8_t *y1end = y1in + i_visible_pitch;
 535         y2in  = y1in + i_pitch;
 536         y2out = y1out + i_pitch;
 537         while( y1in < y1end )
 538         {
 539 /*
 540 38470   -13239  -27473
 541 -21710  7471    15504
 542 -27439  9443    19595
 543 */
 544             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 545                       / 65536 + U );
 546             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 547                       / 65536 + V );
 548             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 549                        / 65536 );
 550             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 551                        / 65536 );
 552             *y2out++ = crop( (*y2in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 553                        / 65536 );
 554             *y2out++ = crop( (*y2in++ * 38470 + (*uin++ - U) * -13239 + (*vin++ -V) * -27473)
 555                        / 65536 );
 556         }
 557         y1in  += 2*i_pitch - i_visible_pitch;
 558         y1out += 2*i_pitch - i_visible_pitch;
 559         uin   += i_uv_pitch - i_uv_visible_pitch;
 560         uout  += i_uv_pitch - i_uv_visible_pitch;
 561         vin   += i_uv_pitch - i_uv_visible_pitch;
 562         vout  += i_uv_pitch - i_uv_visible_pitch;
 563     }
 564 }
 565
 566 static void get_blue_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 567                                  int yp, int up, int vp )
 568 {
 569     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 570     uint8_t *y2in;
 571     uint8_t *uin  = p_inpic->p[up].p_pixels;
 572
 573     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 574     uint8_t *y2out;
 575     uint8_t *uout  = p_outpic->p[up].p_pixels;
 576     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 577
 578     const int i_pitch = p_inpic->p[yp].i_pitch;
 579     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 580     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 581
 582     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 583     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 584
 585     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 586     while( y1in < yend )
 587     {
 588         const uint8_t *y1end = y1in + i_visible_pitch;
 589         y2in  = y1in + i_pitch;
 590         y2out = y1out + i_pitch;
 591         while( y1in < y1end )
 592         {
 593 /*
 594 7471    13239   0
 595 32768   58065   0
 596 -5329   -9443   0
 597 */
 598             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 599                       / 65536 + U );
 600             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 601                       / 65536 + V );
 602             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 603                        / 65536 );
 604             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 605                        / 65536 );
 606             *y2out++ = crop( (*y2in++ * 7471 + (*uin - U) * 13239 )
 607                        / 65536 );
 608             *y2out++ = crop( (*y2in++ * 7471 + (*uin++ - U) * 13239 )
 609                        / 65536 );
 610         }
 611         y1in  += 2*i_pitch - i_visible_pitch;
 612         y1out += 2*i_pitch - i_visible_pitch;
 613         uin   += i_uv_pitch - i_uv_visible_pitch;
 614         uout  += i_uv_pitch - i_uv_visible_pitch;
 615         vout  += i_uv_pitch - i_uv_visible_pitch;
 616     }
 617 }
 618
 619 static void get_red_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 620                                  int yp, int up, int vp )
 621 {
 622     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 623     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 624
 625     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 626     uint8_t *uout  = p_outpic->p[up].p_pixels;
 627     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 628
 629     const int i_pitch = p_inpic->p[yp].i_pitch;
 630     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 631     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 632
 633     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 634     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 635
 636     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 637     while( y1in < yend )
 638     {
 639         const uint8_t *y1end = y1in + i_visible_pitch;
 640         while( y1in < y1end )
 641         {
 642 /*
 643 19595   0   27473
 644 -11058  0   -15504
 645 32768   0   45941
 646 */
 647             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 648                       / 65536 + U );
 649             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 650                       / 65536 + V );
 651             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 652                        / 65536 );
 653             *y1out++ = crop( (*y1in++ * 19595 + (*vin++ - V) * 27473)
 654                        / 65536 );
 655         }
 656         y1in  += i_pitch - i_visible_pitch;
 657         y1out += i_pitch - i_visible_pitch;
 658         uout  += i_uv_pitch - i_uv_visible_pitch;
 659         vin   += i_uv_pitch - i_uv_visible_pitch;
 660         vout  += i_uv_pitch - i_uv_visible_pitch;
 661     }
 662 }
 663
 664 static void get_green_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 665                                    int yp, int up, int vp )
 666 {
 667     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 668     uint8_t *uin  = p_inpic->p[up].p_pixels;
 669     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 670
 671     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 672     uint8_t *uout  = p_outpic->p[up].p_pixels;
 673     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 674
 675     const int i_pitch = p_inpic->p[yp].i_pitch;
 676     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 677     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 678
 679     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 680     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 681
 682     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 683     while( y1in < yend )
 684     {
 685         const uint8_t *y1end = y1in + i_visible_pitch;
 686         while( y1in < y1end )
 687         {
 688 /*
 689 38470   -13239  -27473
 690 -21710  7471    15504
 691 -27439  9443    19595
 692 */
 693             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 694                       / 65536 + U );
 695             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 696                       / 65536 + V );
 697             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 698                        / 65536 );
 699             *y1out++ = crop( (*y1in++ * 38470 + (*uin++-U) * -13239 + (*vin++-V) * -27473)
 700                        / 65536 );
 701         }
 702         y1in  += i_pitch - i_visible_pitch;
 703         y1out += i_pitch - i_visible_pitch;
 704         uin   += i_uv_pitch - i_uv_visible_pitch;
 705         uout  += i_uv_pitch - i_uv_visible_pitch;
 706         vin   += i_uv_pitch - i_uv_visible_pitch;
 707         vout  += i_uv_pitch - i_uv_visible_pitch;
 708     }
 709 }
 710
 711 static void get_blue_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 712                                  int yp, int up, int vp )
 713 {
 714     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 715     uint8_t *uin  = p_inpic->p[up].p_pixels;
 716
 717     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 718     uint8_t *uout  = p_outpic->p[up].p_pixels;
 719     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 720
 721     const int i_pitch = p_inpic->p[yp].i_pitch;
 722     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 723     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 724
 725     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 726     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 727
 728     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 729     while( y1in < yend )
 730     {
 731         const uint8_t *y1end = y1in + i_visible_pitch;
 732         while( y1in < y1end )
 733         {
 734 /*
 735 7471    13239   0
 736 32768   58065   0
 737 -5329   -9443   0
 738 */
 739             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 740                       / 65536 + U );
 741             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 742                       / 65536 + V );
 743             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 744                        / 65536 );
 745             *y1out++ = crop( (*y1in++ * 7471 + (*uin++ - U) * 13239 )
 746                        / 65536 );
 747         }
 748         y1in  += i_pitch - i_visible_pitch;
 749         y1out += i_pitch - i_visible_pitch;
 750         uin   += i_uv_pitch - i_uv_visible_pitch;
 751         uout  += i_uv_pitch - i_uv_visible_pitch;
 752         vout  += i_uv_pitch - i_uv_visible_pitch;
 753     }
 754 }
 755
 756 static int ExtractCallback( vlc_object_t *p_this, char const *psz_var,
 757                             vlc_value_t oldval, vlc_value_t newval,
 758                             void *p_data )
 759 {
 760     VLC_UNUSED(oldval);
 761     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 762
 763     if( !strcmp( psz_var, FILTER_PREFIX "component" ) )
 764     {
 765         p_sys->i_color = newval.i_int;
 766         /* Matrix won't be used for RED, GREEN or BLUE in planar formats */
 767         make_projection_matrix( (filter_t *)p_this, p_sys->i_color,
 768                                 p_sys->projection_matrix );
 769     }
 770     else
 771     {
 772         msg_Warn( p_this, "Unknown callback command." );
 773     }
 774     return VLC_SUCCESS;
 775 }