1 /*****************************************************************************
2 * extract.c : Extract RGB components
3 *****************************************************************************
4 * Copyright (C) 2000-2006 the VideoLAN team
7 * Authors: Antoine Cellerier <dionoea .t videolan d@t org>
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.
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.
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 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
33 #include "vlc_filter.h"
35 /*****************************************************************************
37 *****************************************************************************/
38 static int Create ( vlc_object_t * );
39 static void Destroy ( vlc_object_t * );
41 static picture_t *Filter( filter_t *, picture_t * );
43 static void get_red_from_yuv420( picture_t *, picture_t *, int, int, int );
44 static void get_green_from_yuv420( picture_t *, picture_t *, int, int, int );
45 static void get_blue_from_yuv420( picture_t *, picture_t *, int, int, int );
46 static void get_red_from_yuv422( picture_t *, picture_t *, int, int, int );
47 static void get_green_from_yuv422( picture_t *, picture_t *, int, int, int );
48 static void get_blue_from_yuv422( picture_t *, picture_t *, int, int, int );
49 static void make_projection_matrix( int color, int *matrix );
50 static void get_custom_from_yuv420( picture_t *, picture_t *, int, int, int, int * );
51 static void get_custom_from_yuv422( picture_t *, picture_t *, int, int, int, int * );
54 #define COMPONENT_TEXT N_("RGB component to extract")
55 #define COMPONENT_LONGTEXT N_("RGB component to extract. 0 for Red, 1 for Green and 2 for Blue.")
56 #define FILTER_PREFIX "extract-"
58 static int pi_component_values[] = { 0xFF0000, 0x00FF00, 0x0000FF };
59 static const char *ppsz_component_descriptions[] = { "Red", "Green", "Blue" };
61 /*****************************************************************************
63 *****************************************************************************/
65 set_description( _("Extract RGB component video filter") );
66 set_shortname( _("Extract" ));
67 set_category( CAT_VIDEO );
68 set_subcategory( SUBCAT_VIDEO_VFILTER );
69 set_capability( "video filter2", 0 );
70 add_shortcut( "extract" );
72 add_integer_with_range( FILTER_PREFIX "component", 0xFF0000, 1, 0xFFFFFF,
73 NULL, COMPONENT_TEXT, COMPONENT_LONGTEXT, VLC_FALSE );
74 change_integer_list( pi_component_values, ppsz_component_descriptions, 0 );
76 set_callbacks( Create, Destroy );
79 static const char *ppsz_filter_options[] = {
83 enum { RED=0xFF0000, GREEN=0x00FF00, BLUE=0x0000FF };
87 int *projection_matrix;
90 /*****************************************************************************
92 *****************************************************************************/
93 static int Create( vlc_object_t *p_this )
95 filter_t *p_filter = (filter_t *)p_this;
97 /* Allocate structure */
98 p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
99 if( p_filter->p_sys == NULL )
101 msg_Err( p_filter, "out of memory" );
104 p_filter->p_sys->projection_matrix = malloc( 9 * sizeof( int ) );
105 if( !p_filter->p_sys->projection_matrix )
107 free( p_filter->p_sys );
108 msg_Err( p_filter, "out of memory" );
112 config_ChainParse( p_filter, FILTER_PREFIX, ppsz_filter_options,
115 var_Create( p_filter, FILTER_PREFIX "component",
116 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
117 p_filter->p_sys->i_color = var_GetInteger( p_filter,
118 FILTER_PREFIX "component" );
119 switch( p_filter->p_sys->i_color )
126 make_projection_matrix( p_filter->p_sys->i_color,
127 p_filter->p_sys->projection_matrix );
131 p_filter->pf_video_filter = Filter;
136 /*****************************************************************************
138 *****************************************************************************/
139 static void Destroy( vlc_object_t *p_this )
141 filter_t *p_filter = (filter_t *)p_this;
143 free( p_filter->p_sys->projection_matrix );
144 free( p_filter->p_sys );
147 /*****************************************************************************
149 *****************************************************************************/
150 static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
154 if( !p_pic ) return NULL;
156 p_outpic = p_filter->pf_vout_buffer_new( p_filter );
159 msg_Warn( p_filter, "can't get output picture" );
160 if( p_pic->pf_release )
161 p_pic->pf_release( p_pic );
165 switch( p_pic->format.i_chroma )
167 case VLC_FOURCC('I','4','2','0'):
168 case VLC_FOURCC('I','Y','U','V'):
169 case VLC_FOURCC('J','4','2','0'):
170 case VLC_FOURCC('Y','V','1','2'):
171 switch( p_filter->p_sys->i_color )
174 get_red_from_yuv420( p_pic, p_outpic,
175 Y_PLANE, U_PLANE, V_PLANE );
178 get_green_from_yuv420( p_pic, p_outpic,
179 Y_PLANE, U_PLANE, V_PLANE );
182 get_blue_from_yuv420( p_pic, p_outpic,
183 Y_PLANE, U_PLANE, V_PLANE );
186 get_custom_from_yuv420( p_pic, p_outpic,
187 Y_PLANE, U_PLANE, V_PLANE,
188 p_filter->p_sys->projection_matrix);
193 case VLC_FOURCC('I','4','2','2'):
194 case VLC_FOURCC('J','4','2','2'):
195 switch( p_filter->p_sys->i_color )
198 get_red_from_yuv422( p_pic, p_outpic,
199 Y_PLANE, U_PLANE, V_PLANE );
202 get_green_from_yuv422( p_pic, p_outpic,
203 Y_PLANE, U_PLANE, V_PLANE );
206 get_blue_from_yuv422( p_pic, p_outpic,
207 Y_PLANE, U_PLANE, V_PLANE );
210 get_custom_from_yuv422( p_pic, p_outpic,
211 Y_PLANE, U_PLANE, V_PLANE,
212 p_filter->p_sys->projection_matrix);
218 msg_Warn( p_filter, "Unsupported input chroma (%4s)",
219 (char*)&(p_pic->format.i_chroma) );
220 if( p_pic->pf_release )
221 p_pic->pf_release( p_pic );
225 p_outpic->date = p_pic->date;
226 p_outpic->b_force = p_pic->b_force;
227 p_outpic->i_nb_fields = p_pic->i_nb_fields;
228 p_outpic->b_progressive = p_pic->b_progressive;
229 p_outpic->b_top_field_first = p_pic->b_top_field_first;
231 if( p_pic->pf_release )
232 p_pic->pf_release( p_pic );
237 inline uint8_t crop( int a );
238 inline uint8_t crop( int a )
240 if( a < 0 ) return 0;
241 if( a > 255 ) return 255;
242 else return (uint8_t)a;
248 static void mmult( double *res, double *a, double *b )
251 for( i = 0; i < 3; i++ )
253 for( j = 0; j < 3; j++ )
256 for( k = 0; k < 3; k++ )
258 res[ i*3 + j ] += a[ i*3 + k ] * b[ k*3 + j ];
263 static void make_projection_matrix( int color, int *matrix )
265 double left_matrix[9] =
266 { 76.24500, 149.68500, 29.07000,
267 -43.02765, -84.47235, 127.50000,
268 127.50000, -106.76534, -20.73466 };
269 double right_matrix[9] =
270 { 257.00392, 0.00000, 360.31950,
271 257.00392, -88.44438, -183.53583,
272 257.00392, 455.41095, 0.00000 };
273 double red = ((double)(( 0xFF0000 & color )>>16))/255.;
274 double green = ((double)(( 0x00FF00 & color )>>8))/255.;
275 double blue = ((double)( 0x0000FF & color ))/255.;
276 double norm = sqrt( red*red + green*green + blue*blue );
280 /* XXX: We might still need to norm the rgb_matrix */
281 double rgb_matrix[9] =
282 { red*red, red*green, red*blue,
283 red*green, green*green, green*blue,
284 red*blue, green*blue, blue*blue };
288 printf( "%f\n", red );
289 printf( "%f\n", green );
290 printf( "%f\n", blue );
291 mmult( result1, rgb_matrix, right_matrix );
292 mmult( result, left_matrix, result1 );
293 for( i = 0; i < 9; i++ )
295 matrix[i] = (int)result[i];
296 printf( "%d ", matrix[i] );
297 if( i%3 == 2 ) printf( "\n" );
300 static void get_custom_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
301 int yp, int up, int vp, int *m )
303 uint8_t *y1in = p_inpic->p[yp].p_pixels;
305 uint8_t *uin = p_inpic->p[up].p_pixels;
306 uint8_t *vin = p_inpic->p[vp].p_pixels;
308 uint8_t *y1out = p_outpic->p[yp].p_pixels;
310 uint8_t *uout = p_outpic->p[up].p_pixels;
311 uint8_t *vout = p_outpic->p[vp].p_pixels;
313 const int i_pitch = p_inpic->p[yp].i_pitch;
314 const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
315 const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
317 const int i_uv_pitch = p_inpic->p[up].i_pitch;
318 const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
320 const uint8_t *yend = y1in + i_visible_lines * i_pitch;
323 const uint8_t *y1end = y1in + i_visible_pitch;
324 y2in = y1in + i_pitch;
325 y2out = y1out + i_pitch;
326 while( y1in < y1end )
328 *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
330 *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
332 *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
334 *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
336 *y2out++ = crop( (*y2in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
338 *y2out++ = crop( (*y2in++ * m[0] + (*uin++ - U) * m[1] + (*vin++ -V) * m[2])
341 y1in += 2*i_pitch - i_visible_pitch;
342 y1out += 2*i_pitch - i_visible_pitch;
343 uin += i_uv_pitch - i_uv_visible_pitch;
344 uout += i_uv_pitch - i_uv_visible_pitch;
345 vin += i_uv_pitch - i_uv_visible_pitch;
346 vout += i_uv_pitch - i_uv_visible_pitch;
349 static void get_custom_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
350 int yp, int up, int vp, int *m )
352 uint8_t *y1in = p_inpic->p[yp].p_pixels;
353 uint8_t *uin = p_inpic->p[up].p_pixels;
354 uint8_t *vin = p_inpic->p[vp].p_pixels;
356 uint8_t *y1out = p_outpic->p[yp].p_pixels;
357 uint8_t *uout = p_outpic->p[up].p_pixels;
358 uint8_t *vout = p_outpic->p[vp].p_pixels;
360 const int i_pitch = p_inpic->p[yp].i_pitch;
361 const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
362 const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
364 const int i_uv_pitch = p_inpic->p[up].i_pitch;
365 const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
367 const uint8_t *yend = y1in + i_visible_lines * i_pitch;
370 const uint8_t *y1end = y1in + i_visible_pitch;
371 while( y1in < y1end )
373 *uout++ = crop( (*y1in * m[3] + (*uin-U) * m[4] + (*vin-V) * m[5])
375 *vout++ = crop( (*y1in * m[6] + (*uin-U) * m[7] + (*vin-V) * m[8])
377 *y1out++ = crop( (*y1in++ * m[0] + (*uin-U) * m[1] + (*vin-V) * m[2])
379 *y1out++ = crop( (*y1in++ * m[0] + (*uin++ -U) * m[1] + (*vin++ -V) * m[2])
382 y1in += 2*i_pitch - i_visible_pitch;
383 y1out += 2*i_pitch - i_visible_pitch;
384 uin += i_uv_pitch - i_uv_visible_pitch;
385 uout += i_uv_pitch - i_uv_visible_pitch;
386 vin += i_uv_pitch - i_uv_visible_pitch;
387 vout += i_uv_pitch - i_uv_visible_pitch;
391 static void get_red_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
392 int yp, int up, int vp )
394 uint8_t *y1in = p_inpic->p[yp].p_pixels;
396 uint8_t *vin = p_inpic->p[vp].p_pixels;
398 uint8_t *y1out = p_outpic->p[yp].p_pixels;
400 uint8_t *uout = p_outpic->p[up].p_pixels;
401 uint8_t *vout = p_outpic->p[vp].p_pixels;
403 const int i_pitch = p_inpic->p[yp].i_pitch;
404 const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
405 const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
407 const int i_uv_pitch = p_inpic->p[up].i_pitch;
408 const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
410 const uint8_t *yend = y1in + i_visible_lines * i_pitch;
413 const uint8_t *y1end = y1in + i_visible_pitch;
414 y2in = y1in + i_pitch;
415 y2out = y1out + i_pitch;
416 while( y1in < y1end )
423 *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
425 *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
427 *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
429 *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
431 *y2out++ = crop( (*y2in++ * 19594 + (*vin - V) * 27473)
433 *y2out++ = crop( (*y2in++ * 19594 + (*vin++ - V) * 27473)
436 y1in += 2*i_pitch - i_visible_pitch;
437 y1out += 2*i_pitch - i_visible_pitch;
438 uout += i_uv_pitch - i_uv_visible_pitch;
439 vin += i_uv_pitch - i_uv_visible_pitch;
440 vout += i_uv_pitch - i_uv_visible_pitch;
444 static void get_green_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
445 int yp, int up, int vp )
447 uint8_t *y1in = p_inpic->p[yp].p_pixels;
449 uint8_t *uin = p_inpic->p[up].p_pixels;
450 uint8_t *vin = p_inpic->p[vp].p_pixels;
452 uint8_t *y1out = p_outpic->p[yp].p_pixels;
454 uint8_t *uout = p_outpic->p[up].p_pixels;
455 uint8_t *vout = p_outpic->p[vp].p_pixels;
457 const int i_pitch = p_inpic->p[yp].i_pitch;
458 const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
459 const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
461 const int i_uv_pitch = p_inpic->p[up].i_pitch;
462 const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
464 const uint8_t *yend = y1in + i_visible_lines * i_pitch;
467 const uint8_t *y1end = y1in + i_visible_pitch;
468 y2in = y1in + i_pitch;
469 y2out = y1out + i_pitch;
470 while( y1in < y1end )
477 *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
479 *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
481 *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
483 *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
485 *y2out++ = crop( (*y2in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
487 *y2out++ = crop( (*y2in++ * 38470 + (*uin++ - U) * -13239 + (*vin++ -V) * -27473)
490 y1in += 2*i_pitch - i_visible_pitch;
491 y1out += 2*i_pitch - i_visible_pitch;
492 uin += i_uv_pitch - i_uv_visible_pitch;
493 uout += i_uv_pitch - i_uv_visible_pitch;
494 vin += i_uv_pitch - i_uv_visible_pitch;
495 vout += i_uv_pitch - i_uv_visible_pitch;
499 static void get_blue_from_yuv420( picture_t *p_inpic, picture_t *p_outpic,
500 int yp, int up, int vp )
502 uint8_t *y1in = p_inpic->p[yp].p_pixels;
504 uint8_t *uin = p_inpic->p[up].p_pixels;
506 uint8_t *y1out = p_outpic->p[yp].p_pixels;
508 uint8_t *uout = p_outpic->p[up].p_pixels;
509 uint8_t *vout = p_outpic->p[vp].p_pixels;
511 const int i_pitch = p_inpic->p[yp].i_pitch;
512 const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
513 const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
515 const int i_uv_pitch = p_inpic->p[up].i_pitch;
516 const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
518 const uint8_t *yend = y1in + i_visible_lines * i_pitch;
521 const uint8_t *y1end = y1in + i_visible_pitch;
522 y2in = y1in + i_pitch;
523 y2out = y1out + i_pitch;
524 while( y1in < y1end )
531 *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
533 *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
535 *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
537 *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
539 *y2out++ = crop( (*y2in++ * 7471 + (*uin - U) * 13239 )
541 *y2out++ = crop( (*y2in++ * 7471 + (*uin++ - U) * 13239 )
544 y1in += 2*i_pitch - i_visible_pitch;
545 y1out += 2*i_pitch - i_visible_pitch;
546 uin += i_uv_pitch - i_uv_visible_pitch;
547 uout += i_uv_pitch - i_uv_visible_pitch;
548 vout += i_uv_pitch - i_uv_visible_pitch;
552 static void get_red_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
553 int yp, int up, int vp )
555 uint8_t *y1in = p_inpic->p[yp].p_pixels;
556 uint8_t *vin = p_inpic->p[vp].p_pixels;
558 uint8_t *y1out = p_outpic->p[yp].p_pixels;
559 uint8_t *uout = p_outpic->p[up].p_pixels;
560 uint8_t *vout = p_outpic->p[vp].p_pixels;
562 const int i_pitch = p_inpic->p[yp].i_pitch;
563 const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
564 const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
566 const int i_uv_pitch = p_inpic->p[up].i_pitch;
567 const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
569 const uint8_t *yend = y1in + i_visible_lines * i_pitch;
572 const uint8_t *y1end = y1in + i_visible_pitch;
573 while( y1in < y1end )
580 *uout++ = crop( (*y1in * -11058 + (*vin - V) * -15504)
582 *vout++ = crop( (*y1in * 32768 + (*vin - V) * 45941)
584 *y1out++ = crop( (*y1in++ * 19595 + (*vin - V) * 27473)
586 *y1out++ = crop( (*y1in++ * 19595 + (*vin++ - V) * 27473)
589 y1in += i_pitch - i_visible_pitch;
590 y1out += i_pitch - i_visible_pitch;
591 uout += i_uv_pitch - i_uv_visible_pitch;
592 vin += i_uv_pitch - i_uv_visible_pitch;
593 vout += i_uv_pitch - i_uv_visible_pitch;
597 static void get_green_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
598 int yp, int up, int vp )
600 uint8_t *y1in = p_inpic->p[yp].p_pixels;
601 uint8_t *uin = p_inpic->p[up].p_pixels;
602 uint8_t *vin = p_inpic->p[vp].p_pixels;
604 uint8_t *y1out = p_outpic->p[yp].p_pixels;
605 uint8_t *uout = p_outpic->p[up].p_pixels;
606 uint8_t *vout = p_outpic->p[vp].p_pixels;
608 const int i_pitch = p_inpic->p[yp].i_pitch;
609 const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
610 const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
612 const int i_uv_pitch = p_inpic->p[up].i_pitch;
613 const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
615 const uint8_t *yend = y1in + i_visible_lines * i_pitch;
618 const uint8_t *y1end = y1in + i_visible_pitch;
619 while( y1in < y1end )
626 *uout++ = crop( (*y1in * -21710 + (*uin-U) * 7471 + (*vin-V) * 15504)
628 *vout++ = crop( (*y1in * -27439 + (*uin-U) * 9443 + (*vin-V) * 19595)
630 *y1out++ = crop( (*y1in++ * 38470 + (*uin-U) * -13239 + (*vin-V) * -27473)
632 *y1out++ = crop( (*y1in++ * 38470 + (*uin++-U) * -13239 + (*vin++-V) * -27473)
635 y1in += i_pitch - i_visible_pitch;
636 y1out += i_pitch - i_visible_pitch;
637 uin += i_uv_pitch - i_uv_visible_pitch;
638 uout += i_uv_pitch - i_uv_visible_pitch;
639 vin += i_uv_pitch - i_uv_visible_pitch;
640 vout += i_uv_pitch - i_uv_visible_pitch;
644 static void get_blue_from_yuv422( picture_t *p_inpic, picture_t *p_outpic,
645 int yp, int up, int vp )
647 uint8_t *y1in = p_inpic->p[yp].p_pixels;
648 uint8_t *uin = p_inpic->p[up].p_pixels;
650 uint8_t *y1out = p_outpic->p[yp].p_pixels;
651 uint8_t *uout = p_outpic->p[up].p_pixels;
652 uint8_t *vout = p_outpic->p[vp].p_pixels;
654 const int i_pitch = p_inpic->p[yp].i_pitch;
655 const int i_visible_pitch = p_inpic->p[yp].i_visible_pitch;
656 const int i_visible_lines = p_inpic->p[yp].i_visible_lines;
658 const int i_uv_pitch = p_inpic->p[up].i_pitch;
659 const int i_uv_visible_pitch = p_inpic->p[up].i_visible_pitch;
661 const uint8_t *yend = y1in + i_visible_lines * i_pitch;
664 const uint8_t *y1end = y1in + i_visible_pitch;
665 while( y1in < y1end )
672 *uout++ = crop( (*y1in* 32768 + (*uin - U) * 58065 )
674 *vout++ = crop( (*y1in * -5329 + (*uin - U) * -9443 )
676 *y1out++ = crop( (*y1in++ * 7471 + (*uin - U) * 13239 )
678 *y1out++ = crop( (*y1in++ * 7471 + (*uin++ - U) * 13239 )
681 y1in += i_pitch - i_visible_pitch;
682 y1out += i_pitch - i_visible_pitch;
683 uin += i_uv_pitch - i_uv_visible_pitch;
684 uout += i_uv_pitch - i_uv_visible_pitch;
685 vout += i_uv_pitch - i_uv_visible_pitch;