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     vlc_mutex_t lock;
  97     int *projection_matrix;
  98     uint32_t i_color;
  99 };
 100
 101 /*****************************************************************************
 102  * Create
 103  *****************************************************************************/
 104 static int Create( vlc_object_t *p_this )
 105 {
 106     filter_t *p_filter = (filter_t *)p_this;
 107
 108     switch( p_filter->fmt_in.video.i_chroma )
 109     {
 110         case VLC_FOURCC('I','4','2','0'):
 111         case VLC_FOURCC('I','Y','U','V'):
 112         case VLC_FOURCC('J','4','2','0'):
 113         case VLC_FOURCC('Y','V','1','2'):
 114
 115         case VLC_FOURCC('I','4','2','2'):
 116         case VLC_FOURCC('J','4','2','2'):
 117
 118         CASE_PACKED_YUV_422
 119             break;
 120
 121         default:
 122             /* We only want planar YUV 4:2:0 or 4:2:2 */
 123             msg_Err( p_filter, "Unsupported input chroma (%4s)",
 124                      (char*)&(p_filter->fmt_in.video.i_chroma) );
 125             return VLC_EGENERIC;
 126     }
 127
 128     /* Allocate structure */
 129     p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 130     if( p_filter->p_sys == NULL )
 131         return VLC_ENOMEM;
 132     p_filter->p_sys->projection_matrix = malloc( 9 * sizeof( int ) );
 133     if( !p_filter->p_sys->projection_matrix )
 134     {
 135         free( p_filter->p_sys );
 136         return VLC_ENOMEM;
 137     }
 138
 139     config_ChainParse( p_filter, FILTER_PREFIX, ppsz_filter_options,
 140                        p_filter->p_cfg );
 141
 142     p_filter->p_sys->i_color = var_CreateGetIntegerCommand( p_filter,
 143                                                FILTER_PREFIX "component" );
 144     /* Matrix won't be used for RED, GREEN or BLUE in planar formats */
 145     make_projection_matrix( p_filter, p_filter->p_sys->i_color,
 146                             p_filter->p_sys->projection_matrix );
 147     vlc_mutex_init( &p_filter->p_sys->lock );
 148     var_AddCallback( p_filter, FILTER_PREFIX "component",
 149                      ExtractCallback, p_filter->p_sys );
 150
 151     p_filter->pf_video_filter = Filter;
 152
 153     return VLC_SUCCESS;
 154 }
 155
 156 /*****************************************************************************
 157  * Destroy
 158  *****************************************************************************/
 159 static void Destroy( vlc_object_t *p_this )
 160 {
 161     filter_t *p_filter = (filter_t *)p_this;
 162     filter_sys_t *p_sys = p_filter->p_sys;
 163
 164     var_DelCallback( p_filter, FILTER_PREFIX "component", ExtractCallback,
 165                      p_sys );
 166     vlc_mutex_destroy( &p_sys->lock );
 167     free( p_sys->projection_matrix );
 168     free( p_sys );
 169 }
 170
 171 /*****************************************************************************
 172  * Render
 173  *****************************************************************************/
 174 static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
 175 {
 176     picture_t *p_outpic;
 177     filter_sys_t *p_sys = p_filter->p_sys;
 178
 179     if( !p_pic ) return NULL;
 180
 181     p_outpic = filter_NewPicture( p_filter );
 182     if( !p_outpic )
 183     {
 184         picture_Release( p_pic );
 185         return NULL;
 186     }
 187
 188     vlc_mutex_lock( &p_sys->lock );
 189     switch( p_pic->format.i_chroma )
 190     {
 191         case VLC_FOURCC('I','4','2','0'):
 192         case VLC_FOURCC('I','Y','U','V'):
 193         case VLC_FOURCC('J','4','2','0'):
 194         case VLC_FOURCC('Y','V','1','2'):
 195             switch( p_sys->i_color )
 196             {
 197                 case RED:
 198                     get_red_from_yuv420( p_pic, p_outpic,
 199                                          Y_PLANE, U_PLANE, V_PLANE );
 200                     break;
 201                 case GREEN:
 202                     get_green_from_yuv420( p_pic, p_outpic,
 203                                            Y_PLANE, U_PLANE, V_PLANE );
 204                     break;
 205                 case BLUE:
 206                     get_blue_from_yuv420( p_pic, p_outpic,
 207                                           Y_PLANE, U_PLANE, V_PLANE );
 208                     break;
 209                 default:
 210                     get_custom_from_yuv420( p_pic, p_outpic,
 211                                             Y_PLANE, U_PLANE, V_PLANE,
 212                                             p_sys->projection_matrix);
 213                     break;
 214             }
 215             break;
 216
 217         case VLC_FOURCC('I','4','2','2'):
 218         case VLC_FOURCC('J','4','2','2'):
 219             switch( p_filter->p_sys->i_color )
 220             {
 221                 case RED:
 222                     get_red_from_yuv422( p_pic, p_outpic,
 223                                          Y_PLANE, U_PLANE, V_PLANE );
 224                     break;
 225                 case GREEN:
 226                     get_green_from_yuv422( p_pic, p_outpic,
 227                                            Y_PLANE, U_PLANE, V_PLANE );
 228                     break;
 229                 case BLUE:
 230                     get_blue_from_yuv422( p_pic, p_outpic,
 231                                           Y_PLANE, U_PLANE, V_PLANE );
 232                     break;
 233                 default:
 234                     get_custom_from_yuv422( p_pic, p_outpic,
 235                                             Y_PLANE, U_PLANE, V_PLANE,
 236                                             p_sys->projection_matrix);
 237                     break;
 238             }
 239             break;
 240
 241         CASE_PACKED_YUV_422
 242             get_custom_from_packedyuv422( p_pic, p_outpic,
 243                                           p_sys->projection_matrix );
 244             break;
 245
 246         default:
 247             vlc_mutex_unlock( &p_sys->lock );
 248             msg_Warn( p_filter, "Unsupported input chroma (%4s)",
 249                       (char*)&(p_pic->format.i_chroma) );
 250             picture_Release( p_pic );
 251             return NULL;
 252     }
 253     vlc_mutex_unlock( &p_sys->lock );
 254
 255     return CopyInfoAndRelease( p_outpic, p_pic );
 256 }
 257
 258 static inline uint8_t crop( int a )
 259 {
 260     if( a < 0 ) return 0;
 261     if( a > 255 ) return 255;
 262     else return (uint8_t)a;
 263 }
 264
 265 #define U 128
 266 #define V 128
 267
 268 static void mmult( double *res, double *a, double *b )
 269 {
 270     int i, j, k;
 271     for( i = 0; i < 3; i++ )
 272     {
 273         for( j = 0; j < 3; j++ )
 274         {
 275             res[ i*3 + j ] = 0.;
 276             for( k = 0; k < 3; k++ )
 277             {
 278                 res[ i*3 + j ] += a[ i*3 + k ] * b[ k*3 + j ];
 279             }
 280         }
 281     }
 282 }
 283 static void make_projection_matrix( filter_t *p_filter, int color, int *matrix )
 284 {
 285     double left_matrix[9] =
 286         {  76.24500,  149.68500,  29.07000,
 287           -43.02765,  -84.47235, 127.50000,
 288           127.50000, -106.76534, -20.73466 };
 289     double right_matrix[9] =
 290         { 257.00392,   0.00000,  360.31950,
 291           257.00392, -88.44438, -183.53583,
 292           257.00392, 455.41095,    0.00000 };
 293     double red = ((double)(( 0xFF0000 & color )>>16))/255.;
 294     double green = ((double)(( 0x00FF00 & color )>>8))/255.;
 295     double blue = ((double)( 0x0000FF & color ))/255.;
 296     double norm = sqrt( red*red + green*green + blue*blue );
 297     red /= norm;
 298     green /= norm;
 299     blue /= norm;
 300     /* XXX: We might still need to norm the rgb_matrix */
 301     double rgb_matrix[9] =
 302         { red*red,    red*green,   red*blue,
 303           red*green,  green*green, green*blue,
 304           red*blue,   green*blue,  blue*blue };
 305     double result1[9];
 306     double result[9];
 307     int i;
 308     msg_Dbg( p_filter, "red: %f", red );
 309     msg_Dbg( p_filter, "green: %f", green );
 310     msg_Dbg( p_filter, "blue: %f", blue );
 311     mmult( result1, rgb_matrix, right_matrix );
 312     mmult( result, left_matrix, result1 );
 313     for( i = 0; i < 9; i++ )
 314     {
 315         matrix[i] = (int)result[i];
 316     }
 317     msg_Dbg( p_filter, "Projection matrix:" );
 318     msg_Dbg( p_filter, "%6d %6d %6d", matrix[0], matrix[1], matrix[2] );
 319     msg_Dbg( p_filter, "%6d %6d %6d", matrix[3], matrix[4], matrix[5] );
 320     msg_Dbg( p_filter, "%6d %6d %6d", matrix[6], matrix[7], matrix[8] );
 321 }
 322
 323 static void get_custom_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 324                                     int yp, int up, int vp, int *m )
 325 {
 326     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 327     uint8_t *y2in;
 328     uint8_t *uin  = p_inpic->p[up].p_pixels;
 329     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 330
 331     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 332     uint8_t *y2out;
 333     uint8_t *uout  = p_outpic->p[up].p_pixels;
 334     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 335
 336     const int i_pitch = p_inpic->p[yp].i_pitch;
 337     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 338     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 339
 340     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 341     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 342
 343     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 344     while( y1in < yend )
 345     {
 346         const uint8_t *y1end = y1in + i_visible_pitch;
 347         y2in  = y1in + i_pitch;
 348         y2out = y1out + i_pitch;
 349         while( y1in < y1end )
 350         {
 351             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 352                       / 65536 + U );
 353             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 354                       / 65536 + V );
 355             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 356                        / 65536 );
 357             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 358                        / 65536 );
 359             *y2out++ = crop( (*y2in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 360                        / 65536 );
 361             *y2out++ = crop( (*y2in++ * m[0] + (*uin++ - U) * m[1] + (*vin++ -V) * m[2])
 362                        / 65536 );
 363         }
 364         y1in  += 2*i_pitch - i_visible_pitch;
 365         y1out += 2*i_pitch - i_visible_pitch;
 366         uin   += i_uv_pitch - i_uv_visible_pitch;
 367         uout  += i_uv_pitch - i_uv_visible_pitch;
 368         vin   += i_uv_pitch - i_uv_visible_pitch;
 369         vout  += i_uv_pitch - i_uv_visible_pitch;
 370     }
 371 }
 372 static void get_custom_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 373                                     int yp, int up, int vp, int *m )
 374 {
 375     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 376     uint8_t *uin  = p_inpic->p[up].p_pixels;
 377     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 378
 379     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 380     uint8_t *uout  = p_outpic->p[up].p_pixels;
 381     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 382
 383     const int i_pitch = p_inpic->p[yp].i_pitch;
 384     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 385     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 386
 387     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 388     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 389
 390     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 391     while( y1in < yend )
 392     {
 393         const uint8_t *y1end = y1in + i_visible_pitch;
 394         while( y1in < y1end )
 395         {
 396             *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 397                       / 65536 + U );
 398             *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 399                       / 65536 + V );
 400             *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 401                        / 65536 );
 402             *y1out++ = crop( (*y1in++ * m[0] + (*uin++ -U) * m[1] + (*vin++ -V) * m[2])
 403                        / 65536 );
 404         }
 405         y1in  += i_pitch - i_visible_pitch;
 406         y1out += i_pitch - i_visible_pitch;
 407         uin   += i_uv_pitch - i_uv_visible_pitch;
 408         uout  += i_uv_pitch - i_uv_visible_pitch;
 409         vin   += i_uv_pitch - i_uv_visible_pitch;
 410         vout  += i_uv_pitch - i_uv_visible_pitch;
 411     }
 412 }
 413
 414 static void get_custom_from_packedyuv422( picture_t *p_inpic,
 415                                           picture_t *p_outpic,
 416                                           int *m )
 417 {
 418     int i_y_offset, i_u_offset, i_v_offset;
 419     if( GetPackedYuvOffsets( p_inpic->format.i_chroma, &i_y_offset,
 420                          &i_u_offset, &i_v_offset ) != VLC_SUCCESS )
 421         return;
 422
 423     uint8_t *yin = p_inpic->p->p_pixels + i_y_offset;
 424     uint8_t *uin = p_inpic->p->p_pixels + i_u_offset;
 425     uint8_t *vin = p_inpic->p->p_pixels + i_v_offset;
 426
 427     uint8_t *yout = p_outpic->p->p_pixels + i_y_offset;
 428     uint8_t *uout = p_outpic->p->p_pixels + i_u_offset;
 429     uint8_t *vout = p_outpic->p->p_pixels + i_v_offset;
 430
 431     const int i_pitch = p_inpic->p->i_pitch;
 432     const int i_visible_pitch = p_inpic->p->i_visible_pitch;
 433     const int i_visible_lines = p_inpic->p->i_visible_lines;
 434
 435     const uint8_t *yend = yin + i_visible_lines * i_pitch;
 436     while( yin < yend )
 437     {
 438         const uint8_t *ylend = yin + i_visible_pitch;
 439         while( yin < ylend )
 440         {
 441             *uout = crop( (*yin * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
 442                       / 65536 + U );
 443             uout += 4;
 444             *vout = crop( (*yin * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
 445                      / 65536 + V );
 446             vout += 4;
 447             *yout = crop( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 448                        / 65536 );
 449             yin  += 2;
 450             yout += 2;
 451             *yout = crop( (*yin * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
 452                        / 65536 );
 453             yin  += 2;
 454             yout += 2;
 455             uin  += 4;
 456             vin  += 4;
 457         }
 458         yin  += i_pitch - i_visible_pitch;
 459         yout += i_pitch - i_visible_pitch;
 460         uin  += i_pitch - i_visible_pitch;
 461         uout += i_pitch - i_visible_pitch;
 462         vin  += i_pitch - i_visible_pitch;
 463         vout += i_pitch - i_visible_pitch;
 464     }
 465 }
 466
 467 static void get_red_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 468                                  int yp, int up, int vp )
 469 {
 470     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 471     uint8_t *y2in;
 472     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 473
 474     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 475     uint8_t *y2out;
 476     uint8_t *uout  = p_outpic->p[up].p_pixels;
 477     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 478
 479     const int i_pitch = p_inpic->p[yp].i_pitch;
 480     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 481     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 482
 483     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 484     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 485
 486     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 487     while( y1in < yend )
 488     {
 489         const uint8_t *y1end = y1in + i_visible_pitch;
 490         y2in  = y1in + i_pitch;
 491         y2out = y1out + i_pitch;
 492         while( y1in < y1end )
 493         {
 494 /*
 495 19595   0   27473
 496 -11058  0   -15504
 497 32768   0   45941
 498 */
 499             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 500                       / 65536 + U );
 501             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 502                       / 65536 + V );
 503             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 504                        / 65536 );
 505             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 506                        / 65536 );
 507             *y2out++ = crop( (*y2in++ * 19594 + (*vin - V) * 27473)
 508                        / 65536 );
 509             *y2out++ = crop( (*y2in++ * 19594 + (*vin++ - V) * 27473)
 510                        / 65536 );
 511         }
 512         y1in  += 2*i_pitch - i_visible_pitch;
 513         y1out += 2*i_pitch - i_visible_pitch;
 514         uout  += i_uv_pitch - i_uv_visible_pitch;
 515         vin   += i_uv_pitch - i_uv_visible_pitch;
 516         vout  += i_uv_pitch - i_uv_visible_pitch;
 517     }
 518 }
 519
 520 static void get_green_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 521                                  int yp, int up, int vp )
 522 {
 523     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 524     uint8_t *y2in;
 525     uint8_t *uin  = p_inpic->p[up].p_pixels;
 526     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 527
 528     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 529     uint8_t *y2out;
 530     uint8_t *uout  = p_outpic->p[up].p_pixels;
 531     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 532
 533     const int i_pitch = p_inpic->p[yp].i_pitch;
 534     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 535     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 536
 537     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 538     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 539
 540     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 541     while( y1in < yend )
 542     {
 543         const uint8_t *y1end = y1in + i_visible_pitch;
 544         y2in  = y1in + i_pitch;
 545         y2out = y1out + i_pitch;
 546         while( y1in < y1end )
 547         {
 548 /*
 549 38470   -13239  -27473
 550 -21710  7471    15504
 551 -27439  9443    19595
 552 */
 553             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 554                       / 65536 + U );
 555             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 556                       / 65536 + V );
 557             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 558                        / 65536 );
 559             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 560                        / 65536 );
 561             *y2out++ = crop( (*y2in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 562                        / 65536 );
 563             *y2out++ = crop( (*y2in++ * 38470 + (*uin++ - U) * -13239 + (*vin++ -V) * -27473)
 564                        / 65536 );
 565         }
 566         y1in  += 2*i_pitch - i_visible_pitch;
 567         y1out += 2*i_pitch - i_visible_pitch;
 568         uin   += i_uv_pitch - i_uv_visible_pitch;
 569         uout  += i_uv_pitch - i_uv_visible_pitch;
 570         vin   += i_uv_pitch - i_uv_visible_pitch;
 571         vout  += i_uv_pitch - i_uv_visible_pitch;
 572     }
 573 }
 574
 575 static void get_blue_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
 576                                  int yp, int up, int vp )
 577 {
 578     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 579     uint8_t *y2in;
 580     uint8_t *uin  = p_inpic->p[up].p_pixels;
 581
 582     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 583     uint8_t *y2out;
 584     uint8_t *uout  = p_outpic->p[up].p_pixels;
 585     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 586
 587     const int i_pitch = p_inpic->p[yp].i_pitch;
 588     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 589     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 590
 591     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 592     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 593
 594     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 595     while( y1in < yend )
 596     {
 597         const uint8_t *y1end = y1in + i_visible_pitch;
 598         y2in  = y1in + i_pitch;
 599         y2out = y1out + i_pitch;
 600         while( y1in < y1end )
 601         {
 602 /*
 603 7471    13239   0
 604 32768   58065   0
 605 -5329   -9443   0
 606 */
 607             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 608                       / 65536 + U );
 609             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 610                       / 65536 + V );
 611             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 612                        / 65536 );
 613             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 614                        / 65536 );
 615             *y2out++ = crop( (*y2in++ * 7471 + (*uin - U) * 13239 )
 616                        / 65536 );
 617             *y2out++ = crop( (*y2in++ * 7471 + (*uin++ - U) * 13239 )
 618                        / 65536 );
 619         }
 620         y1in  += 2*i_pitch - i_visible_pitch;
 621         y1out += 2*i_pitch - i_visible_pitch;
 622         uin   += i_uv_pitch - i_uv_visible_pitch;
 623         uout  += i_uv_pitch - i_uv_visible_pitch;
 624         vout  += i_uv_pitch - i_uv_visible_pitch;
 625     }
 626 }
 627
 628 static void get_red_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 629                                  int yp, int up, int vp )
 630 {
 631     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 632     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 633
 634     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 635     uint8_t *uout  = p_outpic->p[up].p_pixels;
 636     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 637
 638     const int i_pitch = p_inpic->p[yp].i_pitch;
 639     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 640     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 641
 642     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 643     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 644
 645     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 646     while( y1in < yend )
 647     {
 648         const uint8_t *y1end = y1in + i_visible_pitch;
 649         while( y1in < y1end )
 650         {
 651 /*
 652 19595   0   27473
 653 -11058  0   -15504
 654 32768   0   45941
 655 */
 656             *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
 657                       / 65536 + U );
 658             *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
 659                       / 65536 + V );
 660             *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
 661                        / 65536 );
 662             *y1out++ = crop( (*y1in++ * 19595 + (*vin++ - V) * 27473)
 663                        / 65536 );
 664         }
 665         y1in  += i_pitch - i_visible_pitch;
 666         y1out += i_pitch - i_visible_pitch;
 667         uout  += i_uv_pitch - i_uv_visible_pitch;
 668         vin   += i_uv_pitch - i_uv_visible_pitch;
 669         vout  += i_uv_pitch - i_uv_visible_pitch;
 670     }
 671 }
 672
 673 static void get_green_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 674                                    int yp, int up, int vp )
 675 {
 676     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 677     uint8_t *uin  = p_inpic->p[up].p_pixels;
 678     uint8_t *vin  = p_inpic->p[vp].p_pixels;
 679
 680     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 681     uint8_t *uout  = p_outpic->p[up].p_pixels;
 682     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 683
 684     const int i_pitch = p_inpic->p[yp].i_pitch;
 685     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 686     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 687
 688     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 689     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 690
 691     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 692     while( y1in < yend )
 693     {
 694         const uint8_t *y1end = y1in + i_visible_pitch;
 695         while( y1in < y1end )
 696         {
 697 /*
 698 38470   -13239  -27473
 699 -21710  7471    15504
 700 -27439  9443    19595
 701 */
 702             *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
 703                       / 65536 + U );
 704             *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
 705                       / 65536 + V );
 706             *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
 707                        / 65536 );
 708             *y1out++ = crop( (*y1in++ * 38470 + (*uin++-U) * -13239 + (*vin++-V) * -27473)
 709                        / 65536 );
 710         }
 711         y1in  += i_pitch - i_visible_pitch;
 712         y1out += i_pitch - i_visible_pitch;
 713         uin   += i_uv_pitch - i_uv_visible_pitch;
 714         uout  += i_uv_pitch - i_uv_visible_pitch;
 715         vin   += i_uv_pitch - i_uv_visible_pitch;
 716         vout  += i_uv_pitch - i_uv_visible_pitch;
 717     }
 718 }
 719
 720 static void get_blue_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
 721                                  int yp, int up, int vp )
 722 {
 723     uint8_t *y1in = p_inpic->p[yp].p_pixels;
 724     uint8_t *uin  = p_inpic->p[up].p_pixels;
 725
 726     uint8_t *y1out = p_outpic->p[yp].p_pixels;
 727     uint8_t *uout  = p_outpic->p[up].p_pixels;
 728     uint8_t *vout  = p_outpic->p[vp].p_pixels;
 729
 730     const int i_pitch = p_inpic->p[yp].i_pitch;
 731     const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
 732     const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
 733
 734     const int i_uv_pitch = p_inpic->p[up].i_pitch;
 735     const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
 736
 737     const uint8_t *yend = y1in + i_visible_lines * i_pitch;
 738     while( y1in < yend )
 739     {
 740         const uint8_t *y1end = y1in + i_visible_pitch;
 741         while( y1in < y1end )
 742         {
 743 /*
 744 7471    13239   0
 745 32768   58065   0
 746 -5329   -9443   0
 747 */
 748             *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
 749                       / 65536 + U );
 750             *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
 751                       / 65536 + V );
 752             *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
 753                        / 65536 );
 754             *y1out++ = crop( (*y1in++ * 7471 + (*uin++ - U) * 13239 )
 755                        / 65536 );
 756         }
 757         y1in  += i_pitch - i_visible_pitch;
 758         y1out += i_pitch - i_visible_pitch;
 759         uin   += i_uv_pitch - i_uv_visible_pitch;
 760         uout  += i_uv_pitch - i_uv_visible_pitch;
 761         vout  += i_uv_pitch - i_uv_visible_pitch;
 762     }
 763 }
 764
 765 static int ExtractCallback( vlc_object_t *p_this, char const *psz_var,
 766                             vlc_value_t oldval, vlc_value_t newval,
 767                             void *p_data )
 768 {
 769     VLC_UNUSED(oldval);
 770     filter_sys_t *p_sys = (filter_sys_t *)p_data;
 771
 772     vlc_mutex_lock( &p_sys->lock );
 773     if( !strcmp( psz_var, FILTER_PREFIX "component" ) )
 774     {
 775         p_sys->i_color = newval.i_int;
 776         /* Matrix won't be used for RED, GREEN or BLUE in planar formats */
 777         make_projection_matrix( (filter_t *)p_this, p_sys->i_color,
 778                                 p_sys->projection_matrix );
 779     }
 780     else
 781     {
 782         msg_Warn( p_this, "Unknown callback command." );
 783     }
 784     vlc_mutex_unlock( &p_sys->lock );
 785     return VLC_SUCCESS;
 786 }