2 * yuv2rgb.c, Software YUV to RGB coverter
4 * Copyright (C) 1999, Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
7 * Functions broken out from display_x11.c and several new modes
8 * added by HÃ¥kan Hjort <d95hjort@dtek.chalmers.se>
10 * 15 & 16 bpp support by Franck Sicard <Franck.Sicard@solsoft.fr>
12 * This file is part of mpeg2dec, a free MPEG-2 video decoder
14 * mpeg2dec is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * mpeg2dec is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with GNU Make; see the file COPYING. If not, write to
26 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
28 * MMX/MMX2 Template stuff from Michael Niedermayer (michaelni@gmx.at) (needed for fast movntq support)
29 * 1,4,8bpp support by Michael Niedermayer (michaelni@gmx.at)
30 * context / deglobalize stuff by Michael Niedermayer
41 #include "swscale_internal.h"
42 #include "img_format.h" //FIXME try to reduce dependency of such stuff
45 #include "yuv2rgb_mlib.c"
48 #define DITHER1XBPP // only for mmx
50 const uint8_t __attribute__((aligned(8))) dither_2x2_4[2][8]={
51 { 1, 3, 1, 3, 1, 3, 1, 3, },
52 { 2, 0, 2, 0, 2, 0, 2, 0, },
55 const uint8_t __attribute__((aligned(8))) dither_2x2_8[2][8]={
56 { 6, 2, 6, 2, 6, 2, 6, 2, },
57 { 0, 4, 0, 4, 0, 4, 0, 4, },
60 const uint8_t __attribute__((aligned(8))) dither_8x8_32[8][8]={
61 { 17, 9, 23, 15, 16, 8, 22, 14, },
62 { 5, 29, 3, 27, 4, 28, 2, 26, },
63 { 21, 13, 19, 11, 20, 12, 18, 10, },
64 { 0, 24, 6, 30, 1, 25, 7, 31, },
65 { 16, 8, 22, 14, 17, 9, 23, 15, },
66 { 4, 28, 2, 26, 5, 29, 3, 27, },
67 { 20, 12, 18, 10, 21, 13, 19, 11, },
68 { 1, 25, 7, 31, 0, 24, 6, 30, },
72 const uint8_t __attribute__((aligned(8))) dither_8x8_64[8][8]={
73 { 0, 48, 12, 60, 3, 51, 15, 63, },
74 { 32, 16, 44, 28, 35, 19, 47, 31, },
75 { 8, 56, 4, 52, 11, 59, 7, 55, },
76 { 40, 24, 36, 20, 43, 27, 39, 23, },
77 { 2, 50, 14, 62, 1, 49, 13, 61, },
78 { 34, 18, 46, 30, 33, 17, 45, 29, },
79 { 10, 58, 6, 54, 9, 57, 5, 53, },
80 { 42, 26, 38, 22, 41, 25, 37, 21, },
84 const uint8_t __attribute__((aligned(8))) dither_8x8_73[8][8]={
85 { 0, 55, 14, 68, 3, 58, 17, 72, },
86 { 37, 18, 50, 32, 40, 22, 54, 35, },
87 { 9, 64, 5, 59, 13, 67, 8, 63, },
88 { 46, 27, 41, 23, 49, 31, 44, 26, },
89 { 2, 57, 16, 71, 1, 56, 15, 70, },
90 { 39, 21, 52, 34, 38, 19, 51, 33, },
91 { 11, 66, 7, 62, 10, 65, 6, 60, },
92 { 48, 30, 43, 25, 47, 29, 42, 24, },
96 const uint8_t __attribute__((aligned(8))) dither_8x8_128[8][8]={
97 { 68, 36, 92, 60, 66, 34, 90, 58, },
98 { 20, 116, 12, 108, 18, 114, 10, 106, },
99 { 84, 52, 76, 44, 82, 50, 74, 42, },
100 { 0, 96, 24, 120, 6, 102, 30, 126, },
101 { 64, 32, 88, 56, 70, 38, 94, 62, },
102 { 16, 112, 8, 104, 22, 118, 14, 110, },
103 { 80, 48, 72, 40, 86, 54, 78, 46, },
104 { 4, 100, 28, 124, 2, 98, 26, 122, },
109 const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
110 {117, 62, 158, 103, 113, 58, 155, 100, },
111 { 34, 199, 21, 186, 31, 196, 17, 182, },
112 {144, 89, 131, 76, 141, 86, 127, 72, },
113 { 0, 165, 41, 206, 10, 175, 52, 217, },
114 {110, 55, 151, 96, 120, 65, 162, 107, },
115 { 28, 193, 14, 179, 38, 203, 24, 189, },
116 {138, 83, 124, 69, 148, 93, 134, 79, },
117 { 7, 172, 48, 213, 3, 168, 45, 210, },
120 // tries to correct a gamma of 1.5
121 const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
122 { 0, 143, 18, 200, 2, 156, 25, 215, },
123 { 78, 28, 125, 64, 89, 36, 138, 74, },
124 { 10, 180, 3, 161, 16, 195, 8, 175, },
125 {109, 51, 93, 38, 121, 60, 105, 47, },
126 { 1, 152, 23, 210, 0, 147, 20, 205, },
127 { 85, 33, 134, 71, 81, 30, 130, 67, },
128 { 14, 190, 6, 171, 12, 185, 5, 166, },
129 {117, 57, 101, 44, 113, 54, 97, 41, },
132 // tries to correct a gamma of 2.0
133 const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
134 { 0, 124, 8, 193, 0, 140, 12, 213, },
135 { 55, 14, 104, 42, 66, 19, 119, 52, },
136 { 3, 168, 1, 145, 6, 187, 3, 162, },
137 { 86, 31, 70, 21, 99, 39, 82, 28, },
138 { 0, 134, 11, 206, 0, 129, 9, 200, },
139 { 62, 17, 114, 48, 58, 16, 109, 45, },
140 { 5, 181, 2, 157, 4, 175, 1, 151, },
141 { 95, 36, 78, 26, 90, 34, 74, 24, },
144 // tries to correct a gamma of 2.5
145 const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
146 { 0, 107, 3, 187, 0, 125, 6, 212, },
147 { 39, 7, 86, 28, 49, 11, 102, 36, },
148 { 1, 158, 0, 131, 3, 180, 1, 151, },
149 { 68, 19, 52, 12, 81, 25, 64, 17, },
150 { 0, 119, 5, 203, 0, 113, 4, 195, },
151 { 45, 9, 96, 33, 42, 8, 91, 30, },
152 { 2, 172, 1, 144, 2, 165, 0, 137, },
153 { 77, 23, 60, 15, 72, 21, 56, 14, },
157 #if defined(ARCH_X86) || defined(ARCH_X86_64)
159 /* hope these constant values are cache line aligned */
160 uint64_t attribute_used __attribute__((aligned(8))) mmx_00ffw = 0x00ff00ff00ff00ffULL;
161 uint64_t attribute_used __attribute__((aligned(8))) mmx_redmask = 0xf8f8f8f8f8f8f8f8ULL;
162 uint64_t attribute_used __attribute__((aligned(8))) mmx_grnmask = 0xfcfcfcfcfcfcfcfcULL;
164 uint64_t attribute_used __attribute__((aligned(8))) M24A= 0x00FF0000FF0000FFULL;
165 uint64_t attribute_used __attribute__((aligned(8))) M24B= 0xFF0000FF0000FF00ULL;
166 uint64_t attribute_used __attribute__((aligned(8))) M24C= 0x0000FF0000FF0000ULL;
168 // the volatile is required because gcc otherwise optimizes some writes away not knowing that these
169 // are read in the asm block
170 volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;
171 volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;
172 volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;
173 volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;
175 uint64_t __attribute__((aligned(8))) dither4[2]={
176 0x0103010301030103LL,
177 0x0200020002000200LL,};
179 uint64_t __attribute__((aligned(8))) dither8[2]={
180 0x0602060206020602LL,
181 0x0004000400040004LL,};
190 #define RENAME(a) a ## _MMX
191 #include "yuv2rgb_template.c"
198 #define RENAME(a) a ## _MMX2
199 #include "yuv2rgb_template.c"
201 #endif // CAN_COMPILE_X86_ASM
203 const int32_t Inverse_Table_6_9[8][4] = {
204 {117504, 138453, 13954, 34903}, /* no sequence_display_extension */
205 {117504, 138453, 13954, 34903}, /* ITU-R Rec. 709 (1990) */
206 {104597, 132201, 25675, 53279}, /* unspecified */
207 {104597, 132201, 25675, 53279}, /* reserved */
208 {104448, 132798, 24759, 53109}, /* FCC */
209 {104597, 132201, 25675, 53279}, /* ITU-R Rec. 624-4 System B, G */
210 {104597, 132201, 25675, 53279}, /* SMPTE 170M */
211 {117579, 136230, 16907, 35559} /* SMPTE 240M (1987) */
217 r = c->table_rV[V]; \
218 g = c->table_gU[U] + c->table_gV[V]; \
223 dst_1[2*i] = r[Y] + g[Y] + b[Y]; \
225 dst_1[2*i+1] = r[Y] + g[Y] + b[Y];
229 dst_2[2*i] = r[Y] + g[Y] + b[Y]; \
231 dst_2[2*i+1] = r[Y] + g[Y] + b[Y];
235 dst_1[6*i] = r[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = b[Y]; \
237 dst_1[6*i+3] = r[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = b[Y];
241 dst_2[6*i] = r[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = b[Y]; \
243 dst_2[6*i+3] = r[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = b[Y];
247 dst_1[6*i] = b[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = r[Y]; \
249 dst_1[6*i+3] = b[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = r[Y];
253 dst_2[6*i] = b[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = r[Y]; \
255 dst_2[6*i+3] = b[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = r[Y];
257 #define PROLOG(func_name, dst_type) \
258 static int func_name(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, \
259 int srcSliceH, uint8_t* dst[], int dstStride[]){\
262 if(c->srcFormat == IMGFMT_422P){\
266 for(y=0; y<srcSliceH; y+=2){\
267 dst_type *dst_1= (dst_type*)(dst[0] + (y+srcSliceY )*dstStride[0]);\
268 dst_type *dst_2= (dst_type*)(dst[0] + (y+srcSliceY+1)*dstStride[0]);\
269 dst_type *r, *g, *b;\
270 uint8_t *py_1= src[0] + y*srcStride[0];\
271 uint8_t *py_2= py_1 + srcStride[0];\
272 uint8_t *pu= src[1] + (y>>1)*srcStride[1];\
273 uint8_t *pv= src[2] + (y>>1)*srcStride[2];\
274 unsigned int h_size= c->dstW>>3;\
278 #define EPILOG(dst_delta)\
290 PROLOG(yuv2rgb_c_32, uint32_t)
308 PROLOG(yuv2rgb_c_24_rgb, uint8_t)
326 // only trivial mods from yuv2rgb_c_24_rgb
327 PROLOG(yuv2rgb_c_24_bgr, uint8_t)
345 // This is exactly the same code as yuv2rgb_c_32 except for the types of
346 // r, g, b, dst_1, dst_2
347 PROLOG(yuv2rgb_c_16, uint16_t)
365 // This is exactly the same code as yuv2rgb_c_32 except for the types of
366 // r, g, b, dst_1, dst_2
367 PROLOG(yuv2rgb_c_8, uint8_t)
385 // r, g, b, dst_1, dst_2
386 PROLOG(yuv2rgb_c_8_ordered_dither, uint8_t)
387 const uint8_t *d32= dither_8x8_32[y&7];
388 const uint8_t *d64= dither_8x8_73[y&7];
389 #define DST1bpp8(i,o) \
391 dst_1[2*i] = r[Y+d32[0+o]] + g[Y+d32[0+o]] + b[Y+d64[0+o]]; \
393 dst_1[2*i+1] = r[Y+d32[1+o]] + g[Y+d32[1+o]] + b[Y+d64[1+o]];
395 #define DST2bpp8(i,o) \
397 dst_2[2*i] = r[Y+d32[8+o]] + g[Y+d32[8+o]] + b[Y+d64[8+o]]; \
399 dst_2[2*i+1] = r[Y+d32[9+o]] + g[Y+d32[9+o]] + b[Y+d64[9+o]];
420 // This is exactly the same code as yuv2rgb_c_32 except for the types of
421 // r, g, b, dst_1, dst_2
422 PROLOG(yuv2rgb_c_4, uint8_t)
426 acc = r[Y] + g[Y] + b[Y]; \
428 acc |= (r[Y] + g[Y] + b[Y])<<4;\
433 acc = r[Y] + g[Y] + b[Y]; \
435 acc |= (r[Y] + g[Y] + b[Y])<<4;\
455 PROLOG(yuv2rgb_c_4_ordered_dither, uint8_t)
456 const uint8_t *d64= dither_8x8_73[y&7];
457 const uint8_t *d128=dither_8x8_220[y&7];
460 #define DST1bpp4(i,o) \
462 acc = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]]; \
464 acc |= (r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]])<<4;\
467 #define DST2bpp4(i,o) \
469 acc = r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]]; \
471 acc |= (r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]])<<4;\
492 // This is exactly the same code as yuv2rgb_c_32 except for the types of
493 // r, g, b, dst_1, dst_2
494 PROLOG(yuv2rgb_c_4b, uint8_t)
512 PROLOG(yuv2rgb_c_4b_ordered_dither, uint8_t)
513 const uint8_t *d64= dither_8x8_73[y&7];
514 const uint8_t *d128=dither_8x8_220[y&7];
516 #define DST1bpp4b(i,o) \
518 dst_1[2*i] = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]]; \
520 dst_1[2*i+1] = r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]];
522 #define DST2bpp4b(i,o) \
524 dst_2[2*i] = r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]]; \
526 dst_2[2*i+1] = r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]];
546 PROLOG(yuv2rgb_c_1_ordered_dither, uint8_t)
547 const uint8_t *d128=dither_8x8_220[y&7];
548 char out_1=0, out_2=0;
549 g= c->table_gU[128] + c->table_gV[128];
551 #define DST1bpp1(i,o) \
553 out_1+= out_1 + g[Y+d128[0+o]]; \
555 out_1+= out_1 + g[Y+d128[1+o]];
557 #define DST2bpp1(i,o) \
559 out_2+= out_2 + g[Y+d128[8+o]]; \
561 out_2+= out_2 + g[Y+d128[9+o]];
579 SwsFunc yuv2rgb_get_func_ptr (SwsContext *c)
581 #if defined(ARCH_X86) || defined(ARCH_X86_64)
582 if(c->flags & SWS_CPU_CAPS_MMX2){
583 switch(c->dstFormat){
584 case IMGFMT_BGR32: return yuv420_rgb32_MMX2;
585 case IMGFMT_BGR24: return yuv420_rgb24_MMX2;
586 case IMGFMT_BGR16: return yuv420_rgb16_MMX2;
587 case IMGFMT_BGR15: return yuv420_rgb15_MMX2;
590 if(c->flags & SWS_CPU_CAPS_MMX){
591 switch(c->dstFormat){
592 case IMGFMT_BGR32: return yuv420_rgb32_MMX;
593 case IMGFMT_BGR24: return yuv420_rgb24_MMX;
594 case IMGFMT_BGR16: return yuv420_rgb16_MMX;
595 case IMGFMT_BGR15: return yuv420_rgb15_MMX;
601 SwsFunc t= yuv2rgb_init_mlib(c);
606 if (c->flags & SWS_CPU_CAPS_ALTIVEC)
608 SwsFunc t = yuv2rgb_init_altivec(c);
613 MSG_WARN("No accelerated colorspace conversion found\n");
615 switch(c->dstFormat){
617 case IMGFMT_BGR32: return yuv2rgb_c_32;
618 case IMGFMT_RGB24: return yuv2rgb_c_24_rgb;
619 case IMGFMT_BGR24: return yuv2rgb_c_24_bgr;
623 case IMGFMT_BGR15: return yuv2rgb_c_16;
625 case IMGFMT_BGR8: return yuv2rgb_c_8_ordered_dither;
627 case IMGFMT_BGR4: return yuv2rgb_c_4_ordered_dither;
629 case IMGFMT_BG4B: return yuv2rgb_c_4b_ordered_dither;
631 case IMGFMT_BGR1: return yuv2rgb_c_1_ordered_dither;
638 static int div_round (int dividend, int divisor)
641 return (dividend + (divisor>>1)) / divisor;
643 return -((-dividend + (divisor>>1)) / divisor);
646 int yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
648 const int isRgb = IMGFMT_IS_BGR(c->dstFormat);
649 const int bpp = isRgb?IMGFMT_RGB_DEPTH(c->dstFormat):IMGFMT_BGR_DEPTH(c->dstFormat);
651 uint8_t table_Y[1024];
652 uint32_t *table_32 = 0;
653 uint16_t *table_16 = 0;
654 uint8_t *table_8 = 0;
655 uint8_t *table_332 = 0;
656 uint8_t *table_121 = 0;
657 uint8_t *table_1 = 0;
659 void *table_r = 0, *table_g = 0, *table_b = 0;
662 int64_t crv = inv_table[0];
663 int64_t cbu = inv_table[1];
664 int64_t cgu = -inv_table[2];
665 int64_t cgv = -inv_table[3];
669 //printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);
675 cy = (cy *contrast )>>16;
676 crv= (crv*contrast * saturation)>>32;
677 cbu= (cbu*contrast * saturation)>>32;
678 cgu= (cgu*contrast * saturation)>>32;
679 cgv= (cgv*contrast * saturation)>>32;
680 //printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);
681 oy -= 256*brightness;
683 for (i = 0; i < 1024; i++) {
686 j= (cy*(((i - 384)<<16) - oy) + (1<<31))>>32;
687 j = (j < 0) ? 0 : ((j > 255) ? 255 : j);
693 table_start= table_32 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint32_t));
695 entry_size = sizeof (uint32_t);
696 table_r = table_32 + 197;
697 table_b = table_32 + 197 + 685;
698 table_g = table_32 + 197 + 2*682;
700 for (i = -197; i < 256+197; i++)
701 ((uint32_t *)table_r)[i] = table_Y[i+384] << (isRgb ? 16 : 0);
702 for (i = -132; i < 256+132; i++)
703 ((uint32_t *)table_g)[i] = table_Y[i+384] << 8;
704 for (i = -232; i < 256+232; i++)
705 ((uint32_t *)table_b)[i] = table_Y[i+384] << (isRgb ? 0 : 16);
709 table_start= table_8 = av_malloc ((256 + 2*232) * sizeof (uint8_t));
711 entry_size = sizeof (uint8_t);
712 table_r = table_g = table_b = table_8 + 232;
714 for (i = -232; i < 256+232; i++)
715 ((uint8_t * )table_b)[i] = table_Y[i+384];
720 table_start= table_16 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint16_t));
722 entry_size = sizeof (uint16_t);
723 table_r = table_16 + 197;
724 table_b = table_16 + 197 + 685;
725 table_g = table_16 + 197 + 2*682;
727 for (i = -197; i < 256+197; i++) {
728 int j = table_Y[i+384] >> 3;
731 j <<= ((bpp==16) ? 11 : 10);
733 ((uint16_t *)table_r)[i] = j;
735 for (i = -132; i < 256+132; i++) {
736 int j = table_Y[i+384] >> ((bpp==16) ? 2 : 3);
738 ((uint16_t *)table_g)[i] = j << 5;
740 for (i = -232; i < 256+232; i++) {
741 int j = table_Y[i+384] >> 3;
744 j <<= ((bpp==16) ? 11 : 10);
746 ((uint16_t *)table_b)[i] = j;
751 table_start= table_332 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint8_t));
753 entry_size = sizeof (uint8_t);
754 table_r = table_332 + 197;
755 table_b = table_332 + 197 + 685;
756 table_g = table_332 + 197 + 2*682;
758 for (i = -197; i < 256+197; i++) {
759 int j = (table_Y[i+384 - 16] + 18)/36;
764 ((uint8_t *)table_r)[i] = j;
766 for (i = -132; i < 256+132; i++) {
767 int j = (table_Y[i+384 - 16] + 18)/36;
772 ((uint8_t *)table_g)[i] = j << 2;
774 for (i = -232; i < 256+232; i++) {
775 int j = (table_Y[i+384 - 37] + 43)/85;
780 ((uint8_t *)table_b)[i] = j;
785 table_start= table_121 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint8_t));
787 entry_size = sizeof (uint8_t);
788 table_r = table_121 + 197;
789 table_b = table_121 + 197 + 685;
790 table_g = table_121 + 197 + 2*682;
792 for (i = -197; i < 256+197; i++) {
793 int j = table_Y[i+384 - 110] >> 7;
798 ((uint8_t *)table_r)[i] = j;
800 for (i = -132; i < 256+132; i++) {
801 int j = (table_Y[i+384 - 37]+ 43)/85;
803 ((uint8_t *)table_g)[i] = j << 1;
805 for (i = -232; i < 256+232; i++) {
806 int j =table_Y[i+384 - 110] >> 7;
811 ((uint8_t *)table_b)[i] = j;
816 table_start= table_1 = av_malloc (256*2 * sizeof (uint8_t));
818 entry_size = sizeof (uint8_t);
820 table_r = table_b = NULL;
822 for (i = 0; i < 256+256; i++) {
823 int j = table_Y[i + 384 - 110]>>7;
825 ((uint8_t *)table_g)[i] = j;
831 MSG_ERR("%ibpp not supported by yuv2rgb\n", bpp);
836 for (i = 0; i < 256; i++) {
837 c->table_rV[i] = table_r + entry_size * div_round (crv * (i-128), 76309);
838 c->table_gU[i] = table_g + entry_size * div_round (cgu * (i-128), 76309);
839 c->table_gV[i] = entry_size * div_round (cgv * (i-128), 76309);
840 c->table_bU[i] = table_b + entry_size * div_round (cbu * (i-128), 76309);
843 av_free(c->yuvTable);
844 c->yuvTable= table_start;