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

   1 /*****************************************************************************
   2  * extract.c : Extract RGB components
   3  *****************************************************************************
   4  * Copyright (C) 2000-2006 VLC authors and VideoLAN
   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 it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * 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
  35 #include <vlc_filter.h>
  36 #include "filter_picture.h"
  37
  38 #include "math.h"
  39
  40 /*****************************************************************************
  41  * Local prototypes
  42  *****************************************************************************/
  43 static int  Create      ( vlc_object_t * );
  44 static void Destroy     ( vlc_object_t * );
  45
  46 static picture_t *Filter( filter_t *, picture_t * );
  47 static int ExtractCallback( vlc_object_t *, char const *,
  48                             vlc_value_t, vlc_value_t, void * );
  49
  50 static void get_red_from_yuv420( picture_t *, picture_t *, int, int, int );
  51 static void get_green_from_yuv420( picture_t *, picture_t *, int, int, int );
  52 static void get_blue_from_yuv420( picture_t *, picture_t *, int, int, int );
  53 static void get_red_from_yuv422( picture_t *, picture_t *, int, int, int );
  54 static void get_green_from_yuv422( picture_t *, picture_t *, int, int, int );
  55 static void get_blue_from_yuv422( picture_t *, picture_t *, int, int, int );
  56 static void make_projection_matrix( filter_t *, int color, int *matrix );
  57 static void get_custom_from_yuv420( picture_t *, picture_t *, int, int, int, int * );
  58 static void get_custom_from_yuv422( picture_t *, picture_t *, int, int, int, int * );
  59 static void get_custom_from_packedyuv422( picture_t *, picture_t *, int * );
  60
  61
  62 #define COMPONENT_TEXT N_("RGB component to extract")
  63 #define COMPONENT_LONGTEXT N_("RGB component to extract. 0 for Red, 1 for Green and 2 for Blue.")
  64 #define FILTER_PREFIX "extract-"
  65
  66 static const int pi_component_values[] = { 0xFF0000, 0x00FF00, 0x0000FF };
  67 static const char *const ppsz_component_descriptions[] = {
  68     "Red", "Green", "Blue" };
  69
  70 /*****************************************************************************
  71  * Module descriptor
  72  *****************************************************************************/
  73 vlc_module_begin ()
  74     set_description( N_("Extract RGB component video filter") )
  75     set_shortname( N_("Extract" ))
  76     set_category( CAT_VIDEO )
  77     set_subcategory( SUBCAT_VIDEO_VFILTER )
  78     set_capability( "video filter2", 0 )
  79     add_shortcut( "extract" )
  80
  81     add_integer_with_range( FILTER_PREFIX "component", 0xFF0000, 1, 0xFFFFFF,
  82                             COMPONENT_TEXT, COMPONENT_LONGTEXT, false )
  83         change_integer_list( pi_component_values, ppsz_component_descriptions )
  84
  85     set_callbacks( Create, Destroy )
  86 vlc_module_end ()
  87
  88 static const char *const ppsz_filter_options[] = {
  89     "component", NULL
  90 };
  91
  92 enum { RED=0xFF0000, GREEN=0x00FF00, BLUE=0x0000FF };
  93 struct filter_sys_t
  94 {
  95     vlc_mutex_t lock;
  96     int *projection_matrix;
  97     uint32_t i_color;
  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 (%4.4s)",
 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     /* Matrix won't be used for RED, GREEN or BLUE in planar formats */
 143     make_projection_matrix( p_filter, p_filter->p_sys->i_color,
 144                             p_filter->p_sys->projection_matrix );
 145     vlc_mutex_init( &p_filter->p_sys->lock );
 146     var_AddCallback( p_filter, FILTER_PREFIX "component",
 147                      ExtractCallback, p_filter->p_sys );
 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     filter_sys_t *p_sys = p_filter->p_sys;
 161
 162     var_DelCallback( p_filter, FILTER_PREFIX "component", ExtractCallback,
 163                      p_sys );
 164     vlc_mutex_destroy( &p_sys->lock );
 165     free( p_sys->projection_matrix );
 166     free( p_sys );
 167 }
 168
 169 /*****************************************************************************
 170  * Render
 171  *****************************************************************************/
 172 static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
 173 {
 174     picture_t *p_outpic;
 175     filter_sys_t *p_sys = p_filter->p_sys;
 176
 177     if( !p_pic ) return NULL;
 178
 179     p_outpic = filter_NewPicture( p_filter );
 180     if( !p_outpic )
 181     {
 182         picture_Release( p_pic );
 183         return NULL;
 184     }
 185
 186     vlc_mutex_lock( &p_sys->lock );
 187     switch( p_pic->format.i_chroma )
 188     {
 189         case VLC_CODEC_I420:
 190         case VLC_CODEC_J420:
 191         case VLC_CODEC_YV12:
 192             switch( p_sys->i_color )
 193             {
 194                 case RED:
 195                     get_red_from_yuv420( p_pic, p_outpic,
 196                                          Y_PLANE, U_PLANE, V_PLANE );
 197                     break;
 198                 case GREEN:
 199                     get_green_from_yuv420( p_pic, p_outpic,
 200                                            Y_PLANE, U_PLANE, V_PLANE );
 201                     break;
 202                 case BLUE:
 203                     get_blue_from_yuv420( p_pic, p_outpic,
 204                                           Y_PLANE, U_PLANE, V_PLANE );
 205                     break;
 206                 default:
 207                     get_custom_from_yuv420( p_pic, p_outpic,
 208                                             Y_PLANE, U_PLANE, V_PLANE,
 209                                             p_sys->projection_matrix);
 210                     break;
 211             }
 212             break;
 213
 214         case VLC_CODEC_I422:
 215         case VLC_CODEC_J422:
 216             switch( p_filter->p_sys->i_color )
 217             {
 218                 case RED:
 219                     get_red_from_yuv422( p_pic, p_outpic,
 220                                          Y_PLANE, U_PLANE, V_PLANE );
 221                     break;
 222                 case GREEN:
 223                     get_green_from_yuv422( p_pic, p_outpic,
 224                                            Y_PLANE, U_PLANE, V_PLANE );
 225                     break;
 226                 case BLUE:
 227                     get_blue_from_yuv422( p_pic, p_outpic,
 228                                           Y_PLANE, U_PLANE, V_PLANE );
 229                     break;
 230                 default:
 231                     get_custom_from_yuv422( p_pic, p_outpic,
 232                                             Y_PLANE, U_PLANE, V_PLANE,
 233                                             p_sys->projection_matrix);
 234                     break;
 235             }
 236             break;
 237
 238         CASE_PACKED_YUV_422
 239             get_custom_from_packedyuv422( p_pic, p_outpic,
 240                                           p_sys->projection_matrix );
 241             break;
 242
 243         default:
 244             vlc_mutex_unlock( &p_sys->lock );
 245             msg_Warn( p_filter, "Unsupported input chroma (%4.4s)",
 246                       (char*)&(p_pic->format.i_chroma) );
 247             picture_Release( p_pic );
 248             return NULL;
 249     }
 250     vlc_mutex_unlock( &p_sys->lock );
 251
 252     return CopyInfoAndRelease( p_outpic, p_pic );
 253 }
 254
 255 #define U 128
 256 #define V 128
 257
 258 static void mmult( double *res, double *a, double *b )
 259 {
 260     int i, j, k;
 261     for( i = 0; i < 3; i++ )
 262     {
 263         for( j = 0; j < 3; j++ )
 264         {
 265             res[ i*3 + j ] = 0.;
 266             for( k = 0; k < 3; k++ )
 267             {
 268                 res[ i*3 + j ] += a[ i*3 + k ] * b[ k*3 + j ];
 269             }
 270         }
 271     }
 272 }
 273 static void make_projection_matrix( filter_t *p_filter, int color, int *matrix )
 274 {
 275     double left_matrix[9] =
 276         {  76.24500,  149.68500,  29.07000,
 277           -43.02765,  -84.47235, 127.50000,
 278           127.50000, -106.76534, -20.73466 };
 279     double right_matrix[9] =
 280         { 257.00392,   0.00000,  360.31950,
 281           257.00392, -88.44438, -183.53583,
 282           257.00392, 455.41095,    0.00000 };
 283     double red = ((double)(( 0xFF0000 & color )>>16))/255.;
 284     double green = ((double)(( 0x00FF00 & color )>>8))/255.;
 285     double blue = ((double)( 0x0000FF & color ))/255.;
 286     double norm = sqrt( red*red + green*green + blue*blue );
 287     if( norm > 0 )
 288     {
 289         red /= norm;
 290         green /= norm;
 291         blue /= norm;
 292     }
 293     /* XXX: We might still need to norm the rgb_matrix */
 294     double rgb_matrix[9] =
 295         { red*red,    red*green,   red*blue,
 296           red*green,  green*green, green*blue,
 297           red*blue,   green*blue,  blue*blue };
 298     double result1[9];
 299     double result[9];
 300     int i;
 301     msg_Dbg( p_filter, "red: %f", red );
 302     msg_Dbg( p_filter, "green: %f", green );
 303     msg_Dbg( p_filter, "blue: %f", blue );
 304     mmult( result1, rgb_matrix, right_matrix );
 305     mmult( result, left_matrix, result1 );
 306     for( i = 0; i < 9; i++ )
 307     {
 308         matrix[i] = (int)result[i];
 309     }
 310     msg_Dbg( p_filter, "Projection matrix:" );
 311     msg_Dbg( p_filter, "%6d %6d %6d", matrix[0], matrix[1], matrix[2] );
 312     msg_Dbg( p_filter, "%6d %6d %6d", matrix[3], matrix[4], matrix[5] );
 313     msg_Dbg( p_filter, "%6d %6d %6d", matrix[6], matrix[7], matrix[8] );
 314 }
 315
 316 static void get_custom_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 317                                     int yp, int up, int vp, int *m )
 318 {
 319     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 320     uint8_t *y2in;
 321     uint8_t *uin  = p_inpic->p[up].p_pixels;
 322     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 323
 324     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 325     uint8_t *y2out;
 326     uint8_t *uout  = p_outpic->p[up].p_pixels;
 327     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 328
 329     const int i_in_pitch  = p_inpic->p[yp].i_pitch;
 330     const int i_out_pitch = p_outpic->p[yp].i_pitch;
 331
 332     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 333     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 334     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 335
 336     const uint8_t *yend = y1in + i_visible_lines * i_in_pitch;
 337     while( y1in < yend )
 338     {
 339         const uint8_t *y1end = y1in + i_visible_pitch;
 340         y2in  = y1in + i_in_pitch;
 341         y2out = y1out + i_out_pitch;
 342         while( y1in < y1end )
 343         {
 344             *uout++ = vlc_uint8( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 345                       / 65536 + U );
 346             *vout++ = vlc_uint8( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 347                       / 65536 + V );
 348             *y1out++ = vlc_uint8( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 349                        / 65536 );
 350             *y1out++ = vlc_uint8( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 351                        / 65536 );
 352             *y2out++ = vlc_uint8( (*y2in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 353                        / 65536 );
 354             *y2out++ = vlc_uint8( (*y2in++ * m[0] + (*uin++ - U) * m[1] + (*vin++ -V) * m[2])
 355                        / 65536 );
 356         }
 357         y1in  += 2*i_in_pitch  - i_visible_pitch;
 358         y1out += 2*i_out_pitch - i_visible_pitch;
 359         uin   += p_inpic->p[up].i_pitch  - i_uv_visible_pitch;
 360         uout  += p_outpic->p[up].i_pitch - i_uv_visible_pitch;
 361         vin   += p_inpic->p[vp].i_pitch  - i_uv_visible_pitch;
 362         vout  += p_outpic->p[vp].i_pitch - i_uv_visible_pitch;
 363     }
 364 }
 365 static void get_custom_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 366                                     int yp, int up, int vp, int *m )
 367 {
 368     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 369     uint8_t *uin  = p_inpic->p[up].p_pixels;
 370     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 371
 372     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 373     uint8_t *uout  = p_outpic->p[up].p_pixels;
 374     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 375
 376     const int i_in_pitch  = p_inpic->p[yp].i_pitch;
 377     const int i_out_pitch = p_outpic->p[yp].i_pitch;
 378
 379     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 380     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 381     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 382
 383     const uint8_t *yend = y1in + i_visible_lines * i_in_pitch;
 384     while( y1in < yend )
 385     {
 386         const uint8_t *y1end = y1in + i_visible_pitch;
 387         while( y1in < y1end )
 388         {
 389             *uout++ = vlc_uint8( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 390                       / 65536 + U );
 391             *vout++ = vlc_uint8( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 392                       / 65536 + V );
 393             *y1out++ = vlc_uint8( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 394                        / 65536 );
 395             *y1out++ = vlc_uint8( (*y1in++ * m[0] + (*uin++ -U) * m[1] + (*vin++ -V) * m[2])
 396                        / 65536 );
 397         }
 398         y1in  += i_in_pitch  - i_visible_pitch;
 399         y1out += i_out_pitch - i_visible_pitch;
 400         uin   += p_inpic->p[up].i_pitch  - i_uv_visible_pitch;
 401         uout  += p_outpic->p[up].i_pitch - i_uv_visible_pitch;
 402         vin   += p_inpic->p[vp].i_pitch  - i_uv_visible_pitch;
 403         vout  += p_outpic->p[vp].i_pitch - i_uv_visible_pitch;
 404     }
 405 }
 406
 407 static void get_custom_from_packedyuv422( picture_t *p_inpic,
 408                                           picture_t *p_outpic,
 409                                           int *m )
 410 {
 411     int i_y_offset, i_u_offset, i_v_offset;
 412     if( GetPackedYuvOffsets( p_inpic->format.i_chroma, &i_y_offset,
 413                          &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 414         return;
 415
 416     uint8_t *yin = p_inpic->p->p_pixels + i_y_offset;
 417     uint8_t *uin = p_inpic->p->p_pixels + i_u_offset;
 418     uint8_t *vin = p_inpic->p->p_pixels + i_v_offset;
 419
 420     uint8_t *yout = p_outpic->p->p_pixels + i_y_offset;
 421     uint8_t *uout = p_outpic->p->p_pixels + i_u_offset;
 422     uint8_t *vout = p_outpic->p->p_pixels + i_v_offset;
 423
 424     const int i_in_pitch  = p_inpic->p->i_pitch;
 425     const int i_out_pitch = p_outpic->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_in_pitch;
 430     while( yin < yend )
 431     {
 432         const uint8_t *ylend = yin + i_visible_pitch;
 433         while( yin < ylend )
 434         {
 435             *uout = vlc_uint8( (*yin * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 436                       / 65536 + U );
 437             uout += 4;
 438             *vout = vlc_uint8( (*yin * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 439                      / 65536 + V );
 440             vout += 4;
 441             *yout = vlc_uint8( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 442                        / 65536 );
 443             yin  += 2;
 444             yout += 2;
 445             *yout = vlc_uint8( (*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_in_pitch  - i_visible_pitch;
 453         yout += i_out_pitch - i_visible_pitch;
 454         uin  += i_in_pitch  - i_visible_pitch;
 455         uout += i_out_pitch - i_visible_pitch;
 456         vin  += i_in_pitch  - i_visible_pitch;
 457         vout += i_out_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_in_pitch  = p_inpic->p[yp].i_pitch;
 474     const int i_out_pitch = p_outpic->p[yp].i_pitch;
 475
 476     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 477     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 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_in_pitch;
 481     while( y1in < yend )
 482     {
 483         const uint8_t *y1end = y1in + i_visible_pitch;
 484         y2in  = y1in + i_in_pitch;
 485         y2out = y1out + i_out_pitch;
 486         while( y1in < y1end )
 487         {
 488 /*
 489 19595   0   27473
 490 -11058  0   -15504
 491 32768   0   45941
 492 */
 493             *uout++ = vlc_uint8( (*y1in * -11058 + (*vin - V) * -15504)
 494                       / 65536 + U );
 495             *vout++ = vlc_uint8( (*y1in * 32768 + (*vin - V) * 45941)
 496                       / 65536 + V );
 497             *y1out++ = vlc_uint8( (*y1in++ * 19595 + (*vin - V) * 27473)
 498                        / 65536 );
 499             *y1out++ = vlc_uint8( (*y1in++ * 19595 + (*vin - V) * 27473)
 500                        / 65536 );
 501             *y2out++ = vlc_uint8( (*y2in++ * 19594 + (*vin - V) * 27473)
 502                        / 65536 );
 503             *y2out++ = vlc_uint8( (*y2in++ * 19594 + (*vin++ - V) * 27473)
 504                        / 65536 );
 505         }
 506         y1in  += 2*i_in_pitch  - i_visible_pitch;
 507         y1out += 2*i_out_pitch - i_visible_pitch;
 508         uout  += p_outpic->p[up].i_pitch - i_uv_visible_pitch;
 509         vin   += p_inpic->p[vp].i_pitch  - i_uv_visible_pitch;
 510         vout  += p_outpic->p[vp].i_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_in_pitch  = p_inpic->p[yp].i_pitch;
 528     const int i_out_pitch = p_outpic->p[yp].i_pitch;
 529
 530     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 531     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 532
 533     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 534
 535     const uint8_t *yend = y1in + i_visible_lines * i_in_pitch;
 536     while( y1in < yend )
 537     {
 538         const uint8_t *y1end = y1in + i_visible_pitch;
 539         y2in  = y1in + i_in_pitch;
 540         y2out = y1out + i_out_pitch;
 541         while( y1in < y1end )
 542         {
 543 /*
 544 38470   -13239  -27473
 545 -21710  7471    15504
 546 -27439  9443    19595
 547 */
 548             *uout++ = vlc_uint8( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 549                       / 65536 + U );
 550             *vout++ = vlc_uint8( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 551                       / 65536 + V );
 552             *y1out++ = vlc_uint8( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 553                        / 65536 );
 554             *y1out++ = vlc_uint8( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 555                        / 65536 );
 556             *y2out++ = vlc_uint8( (*y2in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 557                        / 65536 );
 558             *y2out++ = vlc_uint8( (*y2in++ * 38470 + (*uin++ - U) * -13239 + (*vin++ -V) * -27473)
 559                        / 65536 );
 560         }
 561         y1in  += 2*i_in_pitch  - i_visible_pitch;
 562         y1out += 2*i_out_pitch - i_visible_pitch;
 563         uin   += p_inpic->p[up].i_pitch  - i_uv_visible_pitch;
 564         uout  += p_outpic->p[up].i_pitch - i_uv_visible_pitch;
 565         vin   += p_inpic->p[vp].i_pitch  - i_uv_visible_pitch;
 566         vout  += p_outpic->p[vp].i_pitch - i_uv_visible_pitch;
 567     }
 568 }
 569
 570 static void get_blue_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 571                                  int yp, int up, int vp )
 572 {
 573     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 574     uint8_t *y2in;
 575     uint8_t *uin  = p_inpic->p[up].p_pixels;
 576
 577     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 578     uint8_t *y2out;
 579     uint8_t *uout  = p_outpic->p[up].p_pixels;
 580     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 581
 582     const int i_in_pitch  = p_inpic->p[yp].i_pitch;
 583     const int i_out_pitch = p_outpic->p[yp].i_pitch;
 584
 585     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 586     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 587     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 588
 589     const uint8_t *yend = y1in + i_visible_lines * i_in_pitch;
 590     while( y1in < yend )
 591     {
 592         const uint8_t *y1end = y1in + i_visible_pitch;
 593         y2in  = y1in + i_in_pitch;
 594         y2out = y1out + i_out_pitch;
 595         while( y1in < y1end )
 596         {
 597 /*
 598 7471    13239   0
 599 32768   58065   0
 600 -5329   -9443   0
 601 */
 602             *uout++ = vlc_uint8( (*y1in* 32768 + (*uin - U) * 58065 )
 603                       / 65536 + U );
 604             *vout++ = vlc_uint8( (*y1in * -5329 + (*uin - U) * -9443 )
 605                       / 65536 + V );
 606             *y1out++ = vlc_uint8( (*y1in++ * 7471 + (*uin - U) * 13239 )
 607                        / 65536 );
 608             *y1out++ = vlc_uint8( (*y1in++ * 7471 + (*uin - U) * 13239 )
 609                        / 65536 );
 610             *y2out++ = vlc_uint8( (*y2in++ * 7471 + (*uin - U) * 13239 )
 611                        / 65536 );
 612             *y2out++ = vlc_uint8( (*y2in++ * 7471 + (*uin++ - U) * 13239 )
 613                        / 65536 );
 614         }
 615         y1in  += 2*i_in_pitch  - i_visible_pitch;
 616         y1out += 2*i_out_pitch - i_visible_pitch;
 617         uin   += p_inpic->p[up].i_pitch  - i_uv_visible_pitch;
 618         uout  += p_outpic->p[up].i_pitch - i_uv_visible_pitch;
 619         vout  += p_inpic->p[vp].i_pitch  - i_uv_visible_pitch;
 620     }
 621 }
 622
 623 static void get_red_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 624                                  int yp, int up, int vp )
 625 {
 626     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 627     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 628
 629     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 630     uint8_t *uout  = p_outpic->p[up].p_pixels;
 631     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 632
 633     const int i_in_pitch = p_inpic->p[yp].i_pitch;
 634     const int i_out_pitch = p_inpic->p[yp].i_pitch;
 635
 636     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 637     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 638     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 639
 640     const uint8_t *yend = y1in + i_visible_lines * i_in_pitch;
 641     while( y1in < yend )
 642     {
 643         const uint8_t *y1end = y1in + i_visible_pitch;
 644         while( y1in < y1end )
 645         {
 646 /*
 647 19595   0   27473
 648 -11058  0   -15504
 649 32768   0   45941
 650 */
 651             *uout++ = vlc_uint8( (*y1in * -11058 + (*vin - V) * -15504)
 652                       / 65536 + U );
 653             *vout++ = vlc_uint8( (*y1in * 32768 + (*vin - V) * 45941)
 654                       / 65536 + V );
 655             *y1out++ = vlc_uint8( (*y1in++ * 19595 + (*vin - V) * 27473)
 656                        / 65536 );
 657             *y1out++ = vlc_uint8( (*y1in++ * 19595 + (*vin++ - V) * 27473)
 658                        / 65536 );
 659         }
 660         y1in  += i_in_pitch  - i_visible_pitch;
 661         y1out += i_out_pitch - i_visible_pitch;
 662         uout  += p_outpic->p[up].i_pitch - i_uv_visible_pitch;
 663         vin   += p_inpic->p[vp].i_pitch  - i_uv_visible_pitch;
 664         vout  += p_outpic->p[vp].i_pitch - i_uv_visible_pitch;
 665     }
 666 }
 667
 668 static void get_green_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 669                                    int yp, int up, int vp )
 670 {
 671     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 672     uint8_t *uin  = p_inpic->p[up].p_pixels;
 673     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 674
 675     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 676     uint8_t *uout  = p_outpic->p[up].p_pixels;
 677     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 678
 679     const int i_in_pitch  = p_inpic->p[yp].i_pitch;
 680     const int i_out_pitch = p_outpic->p[yp].i_pitch;
 681
 682     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 683     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 684     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 685
 686     const uint8_t *yend = y1in + i_visible_lines * i_in_pitch;
 687     while( y1in < yend )
 688     {
 689         const uint8_t *y1end = y1in + i_visible_pitch;
 690         while( y1in < y1end )
 691         {
 692 /*
 693 38470   -13239  -27473
 694 -21710  7471    15504
 695 -27439  9443    19595
 696 */
 697             *uout++ = vlc_uint8( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 698                       / 65536 + U );
 699             *vout++ = vlc_uint8( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 700                       / 65536 + V );
 701             *y1out++ = vlc_uint8( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 702                        / 65536 );
 703             *y1out++ = vlc_uint8( (*y1in++ * 38470 + (*uin++-U) * -13239 + (*vin++-V) * -27473)
 704                        / 65536 );
 705         }
 706         y1in  += i_in_pitch  - i_visible_pitch;
 707         y1out += i_out_pitch - i_visible_pitch;
 708         uin   += p_inpic->p[up].i_pitch  - i_uv_visible_pitch;
 709         uout  += p_outpic->p[up].i_pitch - i_uv_visible_pitch;
 710         vin   += p_inpic->p[vp].i_pitch  - i_uv_visible_pitch;
 711         vout  += p_outpic->p[vp].i_pitch - i_uv_visible_pitch;
 712     }
 713 }
 714
 715 static void get_blue_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 716                                  int yp, int up, int vp )
 717 {
 718     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 719     uint8_t *uin  = p_inpic->p[up].p_pixels;
 720
 721     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 722     uint8_t *uout  = p_outpic->p[up].p_pixels;
 723     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 724
 725     const int i_in_pitch  = p_inpic->p[yp].i_pitch;
 726     const int i_out_pitch = p_outpic->p[yp].i_pitch;
 727
 728     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 729     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 730     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 731
 732     const uint8_t *yend = y1in + i_visible_lines * i_in_pitch;
 733     while( y1in < yend )
 734     {
 735         const uint8_t *y1end = y1in + i_visible_pitch;
 736         while( y1in < y1end )
 737         {
 738 /*
 739 7471    13239   0
 740 32768   58065   0
 741 -5329   -9443   0
 742 */
 743             *uout++ = vlc_uint8( (*y1in* 32768 + (*uin - U) * 58065 )
 744                       / 65536 + U );
 745             *vout++ = vlc_uint8( (*y1in * -5329 + (*uin - U) * -9443 )
 746                       / 65536 + V );
 747             *y1out++ = vlc_uint8( (*y1in++ * 7471 + (*uin - U) * 13239 )
 748                        / 65536 );
 749             *y1out++ = vlc_uint8( (*y1in++ * 7471 + (*uin++ - U) * 13239 )
 750                        / 65536 );
 751         }
 752         y1in  += i_in_pitch  - i_visible_pitch;
 753         y1out += i_out_pitch - i_visible_pitch;
 754         uin   += p_inpic->p[up].i_pitch - i_uv_visible_pitch;
 755         uout  += p_outpic->p[up].i_pitch - i_uv_visible_pitch;
 756         vout  += p_outpic->p[vp].i_pitch - i_uv_visible_pitch;
 757     }
 758 }
 759
 760 static int ExtractCallback( vlc_object_t *p_this, char const *psz_var,
 761                             vlc_value_t oldval, vlc_value_t newval,
 762                             void *p_data )
 763 {
 764     VLC_UNUSED(oldval);
 765     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 766
 767     vlc_mutex_lock( &p_sys->lock );
 768     if( !strcmp( psz_var, FILTER_PREFIX "component" ) )
 769     {
 770         p_sys->i_color = newval.i_int;
 771         /* Matrix won't be used for RED, GREEN or BLUE in planar formats */
 772         make_projection_matrix( (filter_t *)p_this, p_sys->i_color,
 773                                 p_sys->projection_matrix );
 774     }
 775     else
 776     {
 777         msg_Warn( p_this, "Unknown callback command." );
 778     }
 779     vlc_mutex_unlock( &p_sys->lock );
 780     return VLC_SUCCESS;
 781 }