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/vlc.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 int pi_component_values[] = { 0xFF0000, 0x00FF00, 0x0000FF };
  68 static const char *ppsz_component_descriptions[] = { "Red", "Green", "Blue" };
  69
  70 /*****************************************************************************
  71  * Module descriptor
  72  *****************************************************************************/
  73 vlc_module_begin();
  74     set_description( _("Extract RGB component video filter") );
  75     set_shortname( _("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                  NULL, COMPONENT_TEXT, COMPONENT_LONGTEXT, false );
  83         change_integer_list( pi_component_values, ppsz_component_descriptions, 0 );
  84
  85     set_callbacks( Create, Destroy );
  86 vlc_module_end();
  87
  88 static const char *ppsz_filter_options[] = {
  89     "component", NULL
  90 };
  91
  92 enum { RED=0xFF0000, GREEN=0x00FF00, BLUE=0x0000FF };
  93 struct filter_sys_t
  94 {
  95     int i_color;
  96     int *projection_matrix;
  97 };
  98
  99 /*****************************************************************************
 100  * Create
 101  *****************************************************************************/
 102 static int Create( vlc_object_t *p_this )
 103 {
 104     filter_t *p_filter = (filter_t *)p_this;
 105
 106     switch( p_filter->fmt_in.video.i_chroma )
 107     {
 108         case VLC_FOURCC('I','4','2','0'):
 109         case VLC_FOURCC('I','Y','U','V'):
 110         case VLC_FOURCC('J','4','2','0'):
 111         case VLC_FOURCC('Y','V','1','2'):
 112
 113         case VLC_FOURCC('I','4','2','2'):
 114         case VLC_FOURCC('J','4','2','2'):
 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     {
 130         msg_Err( p_filter, "out of memory" );
 131         return VLC_ENOMEM;
 132     }
 133     p_filter->p_sys->projection_matrix = malloc( 9 * sizeof( int ) );
 134     if( !p_filter->p_sys->projection_matrix )
 135     {
 136         free( p_filter->p_sys );
 137         msg_Err( p_filter, "out of memory" );
 138         return VLC_ENOMEM;
 139     }
 140
 141     config_ChainParse( p_filter, FILTER_PREFIX, ppsz_filter_options,
 142                        p_filter->p_cfg );
 143
 144     p_filter->p_sys->i_color = var_CreateGetIntegerCommand( p_filter,
 145                                                FILTER_PREFIX "component" );
 146     var_AddCallback( p_filter, FILTER_PREFIX "component",
 147                      ExtractCallback, p_filter->p_sys );
 148
 149     /* Matrix won't be used for RED, GREEN or BLUE in planar formats */
 150     make_projection_matrix( p_filter, p_filter->p_sys->i_color,
 151                             p_filter->p_sys->projection_matrix );
 152
 153     p_filter->pf_video_filter = Filter;
 154
 155     return VLC_SUCCESS;
 156 }
 157
 158 /*****************************************************************************
 159  * Destroy
 160  *****************************************************************************/
 161 static void Destroy( vlc_object_t *p_this )
 162 {
 163     filter_t *p_filter = (filter_t *)p_this;
 164
 165     free( p_filter->p_sys->projection_matrix );
 166     free( p_filter->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
 176     if( !p_pic ) return NULL;
 177
 178     p_outpic = p_filter->pf_vout_buffer_new( p_filter );
 179     if( !p_outpic )
 180     {
 181         msg_Warn( p_filter, "can't get output picture" );
 182         if( p_pic->pf_release )
 183             p_pic->pf_release( p_pic );
 184         return NULL;
 185     }
 186
 187     switch( p_pic->format.i_chroma )
 188     {
 189         case VLC_FOURCC('I','4','2','0'):
 190         case VLC_FOURCC('I','Y','U','V'):
 191         case VLC_FOURCC('J','4','2','0'):
 192         case VLC_FOURCC('Y','V','1','2'):
 193             switch( p_filter->p_sys->i_color )
 194             {
 195                 case RED:
 196                     get_red_from_yuv420( p_pic, p_outpic,
 197                                          Y_PLANE, U_PLANE, V_PLANE );
 198                     break;
 199                 case GREEN:
 200                     get_green_from_yuv420( p_pic, p_outpic,
 201                                            Y_PLANE, U_PLANE, V_PLANE );
 202                     break;
 203                 case BLUE:
 204                     get_blue_from_yuv420( p_pic, p_outpic,
 205                                           Y_PLANE, U_PLANE, V_PLANE );
 206                     break;
 207                 default:
 208                     get_custom_from_yuv420( p_pic, p_outpic,
 209                                             Y_PLANE, U_PLANE, V_PLANE,
 210                                             p_filter->p_sys->projection_matrix);
 211                     break;
 212             }
 213             break;
 214
 215         case VLC_FOURCC('I','4','2','2'):
 216         case VLC_FOURCC('J','4','2','2'):
 217             switch( p_filter->p_sys->i_color )
 218             {
 219                 case RED:
 220                     get_red_from_yuv422( p_pic, p_outpic,
 221                                          Y_PLANE, U_PLANE, V_PLANE );
 222                     break;
 223                 case GREEN:
 224                     get_green_from_yuv422( p_pic, p_outpic,
 225                                            Y_PLANE, U_PLANE, V_PLANE );
 226                     break;
 227                 case BLUE:
 228                     get_blue_from_yuv422( p_pic, p_outpic,
 229                                           Y_PLANE, U_PLANE, V_PLANE );
 230                     break;
 231                 default:
 232                     get_custom_from_yuv422( p_pic, p_outpic,
 233                                             Y_PLANE, U_PLANE, V_PLANE,
 234                                             p_filter->p_sys->projection_matrix);
 235                     break;
 236             }
 237             break;
 238
 239         CASE_PACKED_YUV_422
 240             get_custom_from_packedyuv422( p_pic, p_outpic,
 241                                           p_filter->p_sys->projection_matrix );
 242             break;
 243
 244         default:
 245             msg_Warn( p_filter, "Unsupported input chroma (%4s)",
 246                       (char*)&(p_pic->format.i_chroma) );
 247             if( p_pic->pf_release )
 248                 p_pic->pf_release( p_pic );
 249             return NULL;
 250     }
 251
 252     p_outpic->date = p_pic->date;
 253     p_outpic->b_force = p_pic->b_force;
 254     p_outpic->i_nb_fields = p_pic->i_nb_fields;
 255     p_outpic->b_progressive = p_pic->b_progressive;
 256     p_outpic->b_top_field_first = p_pic->b_top_field_first;
 257
 258     if( p_pic->pf_release )
 259         p_pic->pf_release( p_pic );
 260
 261     return p_outpic;
 262 }
 263
 264 static inline uint8_t crop( int a )
 265 {
 266     if( a < 0 ) return 0;
 267     if( a > 255 ) return 255;
 268     else return (uint8_t)a;
 269 }
 270
 271 #define U 128
 272 #define V 128
 273
 274 static void mmult( double *res, double *a, double *b )
 275 {
 276     int i, j, k;
 277     for( i = 0; i < 3; i++ )
 278     {
 279         for( j = 0; j < 3; j++ )
 280         {
 281             res[ i*3 + j ] = 0.;
 282             for( k = 0; k < 3; k++ )
 283             {
 284                 res[ i*3 + j ] += a[ i*3 + k ] * b[ k*3 + j ];
 285             }
 286         }
 287     }
 288 }
 289 static void make_projection_matrix( filter_t *p_filter, int color, int *matrix )
 290 {
 291     double left_matrix[9] =
 292         {  76.24500,  149.68500,  29.07000,
 293           -43.02765,  -84.47235, 127.50000,
 294           127.50000, -106.76534, -20.73466 };
 295     double right_matrix[9] =
 296         { 257.00392,   0.00000,  360.31950,
 297           257.00392, -88.44438, -183.53583,
 298           257.00392, 455.41095,    0.00000 };
 299     double red = ((double)(( 0xFF0000 & color )>>16))/255.;
 300     double green = ((double)(( 0x00FF00 & color )>>8))/255.;
 301     double blue = ((double)( 0x0000FF & color ))/255.;
 302     double norm = sqrt( red*red + green*green + blue*blue );
 303     red /= norm;
 304     green /= norm;
 305     blue /= norm;
 306     /* XXX: We might still need to norm the rgb_matrix */
 307     double rgb_matrix[9] =
 308         { red*red,    red*green,   red*blue,
 309           red*green,  green*green, green*blue,
 310           red*blue,   green*blue,  blue*blue };
 311     double result1[9];
 312     double result[9];
 313     int i;
 314     msg_Dbg( p_filter, "red: %f", red );
 315     msg_Dbg( p_filter, "green: %f", green );
 316     msg_Dbg( p_filter, "blue: %f", blue );
 317     mmult( result1, rgb_matrix, right_matrix );
 318     mmult( result, left_matrix, result1 );
 319     for( i = 0; i < 9; i++ )
 320     {
 321         matrix[i] = (int)result[i];
 322     }
 323     msg_Dbg( p_filter, "Projection matrix:" );
 324     msg_Dbg( p_filter, "%6d %6d %6d", matrix[0], matrix[1], matrix[2] );
 325     msg_Dbg( p_filter, "%6d %6d %6d", matrix[3], matrix[4], matrix[5] );
 326     msg_Dbg( p_filter, "%6d %6d %6d", matrix[6], matrix[7], matrix[8] );
 327 }
 328
 329 static void get_custom_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 330                                     int yp, int up, int vp, int *m )
 331 {
 332     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 333     uint8_t *y2in;
 334     uint8_t *uin  = p_inpic->p[up].p_pixels;
 335     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 336
 337     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 338     uint8_t *y2out;
 339     uint8_t *uout  = p_outpic->p[up].p_pixels;
 340     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 341
 342     const int i_pitch = p_inpic->p[yp].i_pitch;
 343     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 344     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 345
 346     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 347     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 348
 349     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 350     while( y1in < yend )
 351     {
 352         const uint8_t *y1end = y1in + i_visible_pitch;
 353         y2in  = y1in + i_pitch;
 354         y2out = y1out + i_pitch;
 355         while( y1in < y1end )
 356         {
 357             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 358                       / 65536 + U );
 359             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 360                       / 65536 + V );
 361             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 362                        / 65536 );
 363             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 364                        / 65536 );
 365             *y2out++ = crop( (*y2in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 366                        / 65536 );
 367             *y2out++ = crop( (*y2in++ * m[0] + (*uin++ - U) * m[1] + (*vin++ -V) * m[2])
 368                        / 65536 );
 369         }
 370         y1in  += 2*i_pitch - i_visible_pitch;
 371         y1out += 2*i_pitch - i_visible_pitch;
 372         uin   += i_uv_pitch - i_uv_visible_pitch;
 373         uout  += i_uv_pitch - i_uv_visible_pitch;
 374         vin   += i_uv_pitch - i_uv_visible_pitch;
 375         vout  += i_uv_pitch - i_uv_visible_pitch;
 376     }
 377 }
 378 static void get_custom_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 379                                     int yp, int up, int vp, int *m )
 380 {
 381     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 382     uint8_t *uin  = p_inpic->p[up].p_pixels;
 383     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 384
 385     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 386     uint8_t *uout  = p_outpic->p[up].p_pixels;
 387     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 388
 389     const int i_pitch = p_inpic->p[yp].i_pitch;
 390     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 391     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 392
 393     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 394     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 395
 396     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 397     while( y1in < yend )
 398     {
 399         const uint8_t *y1end = y1in + i_visible_pitch;
 400         while( y1in < y1end )
 401         {
 402             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 403                       / 65536 + U );
 404             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 405                       / 65536 + V );
 406             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 407                        / 65536 );
 408             *y1out++ = crop( (*y1in++ * m[0] + (*uin++ -U) * m[1] + (*vin++ -V) * m[2])
 409                        / 65536 );
 410         }
 411         y1in  += i_pitch - i_visible_pitch;
 412         y1out += i_pitch - i_visible_pitch;
 413         uin   += i_uv_pitch - i_uv_visible_pitch;
 414         uout  += i_uv_pitch - i_uv_visible_pitch;
 415         vin   += i_uv_pitch - i_uv_visible_pitch;
 416         vout  += i_uv_pitch - i_uv_visible_pitch;
 417     }
 418 }
 419
 420 static void get_custom_from_packedyuv422( picture_t *p_inpic,
 421                                           picture_t *p_outpic,
 422                                           int *m )
 423 {
 424     int i_y_offset, i_u_offset, i_v_offset;
 425     if( GetPackedYuvOffsets( p_inpic->format.i_chroma, &i_y_offset,
 426                          &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 427         return;
 428
 429     uint8_t *yin = p_inpic->p->p_pixels + i_y_offset;
 430     uint8_t *uin = p_inpic->p->p_pixels + i_u_offset;
 431     uint8_t *vin = p_inpic->p->p_pixels + i_v_offset;
 432
 433     uint8_t *yout = p_outpic->p->p_pixels + i_y_offset;
 434     uint8_t *uout = p_outpic->p->p_pixels + i_u_offset;
 435     uint8_t *vout = p_outpic->p->p_pixels + i_v_offset;
 436
 437     const int i_pitch = p_inpic->p->i_pitch;
 438     const int i_visible_pitch = p_inpic->p->i_visible_pitch;
 439     const int i_visible_lines = p_inpic->p->i_visible_lines;
 440
 441     const uint8_t *yend = yin + i_visible_lines * i_pitch;
 442     while( yin < yend )
 443     {
 444         const uint8_t *ylend = yin + i_visible_pitch;
 445         while( yin < ylend )
 446         {
 447             *uout = crop( (*yin * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 448                       / 65536 + U );
 449             uout += 4;
 450             *vout = crop( (*yin * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 451                      / 65536 + V );
 452             vout += 4;
 453             *yout = crop( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 454                        / 65536 );
 455             yin  += 2;
 456             yout += 2;
 457             *yout = crop( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 458                        / 65536 );
 459             yin  += 2;
 460             yout += 2;
 461             uin  += 4;
 462             vin  += 4;
 463         }
 464         yin  += i_pitch - i_visible_pitch;
 465         yout += i_pitch - i_visible_pitch;
 466         uin  += i_pitch - i_visible_pitch;
 467         uout += i_pitch - i_visible_pitch;
 468         vin  += i_pitch - i_visible_pitch;
 469         vout += i_pitch - i_visible_pitch;
 470     }
 471 }
 472
 473 static void get_red_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 474                                  int yp, int up, int vp )
 475 {
 476     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 477     uint8_t *y2in;
 478     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 479
 480     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 481     uint8_t *y2out;
 482     uint8_t *uout  = p_outpic->p[up].p_pixels;
 483     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 484
 485     const int i_pitch = p_inpic->p[yp].i_pitch;
 486     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 487     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 488
 489     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 490     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 491
 492     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 493     while( y1in < yend )
 494     {
 495         const uint8_t *y1end = y1in + i_visible_pitch;
 496         y2in  = y1in + i_pitch;
 497         y2out = y1out + i_pitch;
 498         while( y1in < y1end )
 499         {
 500 /*
 501 19595   0   27473
 502 -11058  0   -15504
 503 32768   0   45941
 504 */
 505             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 506                       / 65536 + U );
 507             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 508                       / 65536 + V );
 509             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 510                        / 65536 );
 511             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 512                        / 65536 );
 513             *y2out++ = crop( (*y2in++ * 19594 + (*vin - V) * 27473)
 514                        / 65536 );
 515             *y2out++ = crop( (*y2in++ * 19594 + (*vin++ - V) * 27473)
 516                        / 65536 );
 517         }
 518         y1in  += 2*i_pitch - i_visible_pitch;
 519         y1out += 2*i_pitch - i_visible_pitch;
 520         uout  += i_uv_pitch - i_uv_visible_pitch;
 521         vin   += i_uv_pitch - i_uv_visible_pitch;
 522         vout  += i_uv_pitch - i_uv_visible_pitch;
 523     }
 524 }
 525
 526 static void get_green_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 527                                  int yp, int up, int vp )
 528 {
 529     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 530     uint8_t *y2in;
 531     uint8_t *uin  = p_inpic->p[up].p_pixels;
 532     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 533
 534     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 535     uint8_t *y2out;
 536     uint8_t *uout  = p_outpic->p[up].p_pixels;
 537     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 538
 539     const int i_pitch = p_inpic->p[yp].i_pitch;
 540     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 541     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 542
 543     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 544     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 545
 546     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 547     while( y1in < yend )
 548     {
 549         const uint8_t *y1end = y1in + i_visible_pitch;
 550         y2in  = y1in + i_pitch;
 551         y2out = y1out + i_pitch;
 552         while( y1in < y1end )
 553         {
 554 /*
 555 38470   -13239  -27473
 556 -21710  7471    15504
 557 -27439  9443    19595
 558 */
 559             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 560                       / 65536 + U );
 561             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 562                       / 65536 + V );
 563             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 564                        / 65536 );
 565             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 566                        / 65536 );
 567             *y2out++ = crop( (*y2in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 568                        / 65536 );
 569             *y2out++ = crop( (*y2in++ * 38470 + (*uin++ - U) * -13239 + (*vin++ -V) * -27473)
 570                        / 65536 );
 571         }
 572         y1in  += 2*i_pitch - i_visible_pitch;
 573         y1out += 2*i_pitch - i_visible_pitch;
 574         uin   += i_uv_pitch - i_uv_visible_pitch;
 575         uout  += i_uv_pitch - i_uv_visible_pitch;
 576         vin   += i_uv_pitch - i_uv_visible_pitch;
 577         vout  += i_uv_pitch - i_uv_visible_pitch;
 578     }
 579 }
 580
 581 static void get_blue_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 582                                  int yp, int up, int vp )
 583 {
 584     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 585     uint8_t *y2in;
 586     uint8_t *uin  = p_inpic->p[up].p_pixels;
 587
 588     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 589     uint8_t *y2out;
 590     uint8_t *uout  = p_outpic->p[up].p_pixels;
 591     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 592
 593     const int i_pitch = p_inpic->p[yp].i_pitch;
 594     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 595     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 596
 597     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 598     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 599
 600     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 601     while( y1in < yend )
 602     {
 603         const uint8_t *y1end = y1in + i_visible_pitch;
 604         y2in  = y1in + i_pitch;
 605         y2out = y1out + i_pitch;
 606         while( y1in < y1end )
 607         {
 608 /*
 609 7471    13239   0
 610 32768   58065   0
 611 -5329   -9443   0
 612 */
 613             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 614                       / 65536 + U );
 615             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 616                       / 65536 + V );
 617             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 618                        / 65536 );
 619             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 620                        / 65536 );
 621             *y2out++ = crop( (*y2in++ * 7471 + (*uin - U) * 13239 )
 622                        / 65536 );
 623             *y2out++ = crop( (*y2in++ * 7471 + (*uin++ - U) * 13239 )
 624                        / 65536 );
 625         }
 626         y1in  += 2*i_pitch - i_visible_pitch;
 627         y1out += 2*i_pitch - i_visible_pitch;
 628         uin   += i_uv_pitch - i_uv_visible_pitch;
 629         uout  += i_uv_pitch - i_uv_visible_pitch;
 630         vout  += i_uv_pitch - i_uv_visible_pitch;
 631     }
 632 }
 633
 634 static void get_red_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 635                                  int yp, int up, int vp )
 636 {
 637     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 638     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 639
 640     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 641     uint8_t *uout  = p_outpic->p[up].p_pixels;
 642     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 643
 644     const int i_pitch = p_inpic->p[yp].i_pitch;
 645     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 646     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 647
 648     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 649     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 650
 651     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 652     while( y1in < yend )
 653     {
 654         const uint8_t *y1end = y1in + i_visible_pitch;
 655         while( y1in < y1end )
 656         {
 657 /*
 658 19595   0   27473
 659 -11058  0   -15504
 660 32768   0   45941
 661 */
 662             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 663                       / 65536 + U );
 664             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 665                       / 65536 + V );
 666             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 667                        / 65536 );
 668             *y1out++ = crop( (*y1in++ * 19595 + (*vin++ - V) * 27473)
 669                        / 65536 );
 670         }
 671         y1in  += i_pitch - i_visible_pitch;
 672         y1out += i_pitch - i_visible_pitch;
 673         uout  += i_uv_pitch - i_uv_visible_pitch;
 674         vin   += i_uv_pitch - i_uv_visible_pitch;
 675         vout  += i_uv_pitch - i_uv_visible_pitch;
 676     }
 677 }
 678
 679 static void get_green_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 680                                    int yp, int up, int vp )
 681 {
 682     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 683     uint8_t *uin  = p_inpic->p[up].p_pixels;
 684     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 685
 686     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 687     uint8_t *uout  = p_outpic->p[up].p_pixels;
 688     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 689
 690     const int i_pitch = p_inpic->p[yp].i_pitch;
 691     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 692     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 693
 694     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 695     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 696
 697     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 698     while( y1in < yend )
 699     {
 700         const uint8_t *y1end = y1in + i_visible_pitch;
 701         while( y1in < y1end )
 702         {
 703 /*
 704 38470   -13239  -27473
 705 -21710  7471    15504
 706 -27439  9443    19595
 707 */
 708             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 709                       / 65536 + U );
 710             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 711                       / 65536 + V );
 712             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 713                        / 65536 );
 714             *y1out++ = crop( (*y1in++ * 38470 + (*uin++-U) * -13239 + (*vin++-V) * -27473)
 715                        / 65536 );
 716         }
 717         y1in  += i_pitch - i_visible_pitch;
 718         y1out += i_pitch - i_visible_pitch;
 719         uin   += i_uv_pitch - i_uv_visible_pitch;
 720         uout  += i_uv_pitch - i_uv_visible_pitch;
 721         vin   += i_uv_pitch - i_uv_visible_pitch;
 722         vout  += i_uv_pitch - i_uv_visible_pitch;
 723     }
 724 }
 725
 726 static void get_blue_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 727                                  int yp, int up, int vp )
 728 {
 729     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 730     uint8_t *uin  = p_inpic->p[up].p_pixels;
 731
 732     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 733     uint8_t *uout  = p_outpic->p[up].p_pixels;
 734     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 735
 736     const int i_pitch = p_inpic->p[yp].i_pitch;
 737     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 738     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 739
 740     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 741     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 742
 743     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 744     while( y1in < yend )
 745     {
 746         const uint8_t *y1end = y1in + i_visible_pitch;
 747         while( y1in < y1end )
 748         {
 749 /*
 750 7471    13239   0
 751 32768   58065   0
 752 -5329   -9443   0
 753 */
 754             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 755                       / 65536 + U );
 756             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 757                       / 65536 + V );
 758             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 759                        / 65536 );
 760             *y1out++ = crop( (*y1in++ * 7471 + (*uin++ - U) * 13239 )
 761                        / 65536 );
 762         }
 763         y1in  += i_pitch - i_visible_pitch;
 764         y1out += i_pitch - i_visible_pitch;
 765         uin   += i_uv_pitch - i_uv_visible_pitch;
 766         uout  += i_uv_pitch - i_uv_visible_pitch;
 767         vout  += i_uv_pitch - i_uv_visible_pitch;
 768     }
 769 }
 770
 771 static int ExtractCallback( vlc_object_t *p_this, char const *psz_var,
 772                             vlc_value_t oldval, vlc_value_t newval,
 773                             void *p_data )
 774 {
 775     VLC_UNUSED(oldval);
 776     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 777
 778     if( !strcmp( psz_var, FILTER_PREFIX "component" ) )
 779     {
 780         p_sys->i_color = newval.i_int;
 781         /* Matrix won't be used for RED, GREEN or BLUE in planar formats */
 782         make_projection_matrix( (filter_t *)p_this, p_sys->i_color,
 783                                 p_sys->projection_matrix );
 784     }
 785     else
 786     {
 787         msg_Warn( p_this, "Unknown callback command." );
 788     }
 789     return VLC_SUCCESS;
 790 }