summaryrefslogtreecommitdiffstats
path: root/libswscale/yuv2rgb.c
blob: 8c116ba0b7d76018d07a9301656af72a484acd04 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
/*
 * yuv2rgb.c, Software YUV to RGB coverter
 *
 *  Copyright (C) 1999, Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
 *  All Rights Reserved.
 *
 *  Functions broken out from display_x11.c and several new modes
 *  added by Håkan Hjort <d95hjort@dtek.chalmers.se>
 *
 *  15 & 16 bpp support by Franck Sicard <Franck.Sicard@solsoft.fr>
 *
 *  This file is part of mpeg2dec, a free MPEG-2 video decoder
 *
 *  mpeg2dec is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  mpeg2dec is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with GNU Make; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * MMX/MMX2 Template stuff from Michael Niedermayer (michaelni@gmx.at) (needed for fast movntq support)
 * 1,4,8bpp support by Michael Niedermayer (michaelni@gmx.at)
 * context / deglobalize stuff by Michael Niedermayer
 */

#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <assert.h>

#include "config.h"
#include "rgb2rgb.h"
#include "swscale.h"
#include "swscale_internal.h"
#include "libmpcodecs/img_format.h" //FIXME try to reduce dependency of such stuff

#ifdef HAVE_MLIB
#include "yuv2rgb_mlib.c"
#endif

#define DITHER1XBPP // only for mmx

const uint8_t  __attribute__((aligned(8))) dither_2x2_4[2][8]={
{  1,   3,   1,   3,   1,   3,   1,   3, },
{  2,   0,   2,   0,   2,   0,   2,   0, },
};

const uint8_t  __attribute__((aligned(8))) dither_2x2_8[2][8]={
{  6,   2,   6,   2,   6,   2,   6,   2, },
{  0,   4,   0,   4,   0,   4,   0,   4, },
};

const uint8_t  __attribute__((aligned(8))) dither_8x8_32[8][8]={
{ 17,   9,  23,  15,  16,   8,  22,  14, },
{  5,  29,   3,  27,   4,  28,   2,  26, },
{ 21,  13,  19,  11,  20,  12,  18,  10, },
{  0,  24,   6,  30,   1,  25,   7,  31, },
{ 16,   8,  22,  14,  17,   9,  23,  15, },
{  4,  28,   2,  26,   5,  29,   3,  27, },
{ 20,  12,  18,  10,  21,  13,  19,  11, },
{  1,  25,   7,  31,   0,  24,   6,  30, },
};

#if 0
const uint8_t  __attribute__((aligned(8))) dither_8x8_64[8][8]={
{  0,  48,  12,  60,   3,  51,  15,  63, },
{ 32,  16,  44,  28,  35,  19,  47,  31, },
{  8,  56,   4,  52,  11,  59,   7,  55, },
{ 40,  24,  36,  20,  43,  27,  39,  23, },
{  2,  50,  14,  62,   1,  49,  13,  61, },
{ 34,  18,  46,  30,  33,  17,  45,  29, },
{ 10,  58,   6,  54,   9,  57,   5,  53, },
{ 42,  26,  38,  22,  41,  25,  37,  21, },
};
#endif

const uint8_t  __attribute__((aligned(8))) dither_8x8_73[8][8]={
{  0,  55,  14,  68,   3,  58,  17,  72, },
{ 37,  18,  50,  32,  40,  22,  54,  35, },
{  9,  64,   5,  59,  13,  67,   8,  63, },
{ 46,  27,  41,  23,  49,  31,  44,  26, },
{  2,  57,  16,  71,   1,  56,  15,  70, },
{ 39,  21,  52,  34,  38,  19,  51,  33, },
{ 11,  66,   7,  62,  10,  65,   6,  60, },
{ 48,  30,  43,  25,  47,  29,  42,  24, },
};

#if 0
const uint8_t  __attribute__((aligned(8))) dither_8x8_128[8][8]={
{ 68,  36,  92,  60,  66,  34,  90,  58, },
{ 20, 116,  12, 108,  18, 114,  10, 106, },
{ 84,  52,  76,  44,  82,  50,  74,  42, },
{  0,  96,  24, 120,   6, 102,  30, 126, },
{ 64,  32,  88,  56,  70,  38,  94,  62, },
{ 16, 112,   8, 104,  22, 118,  14, 110, },
{ 80,  48,  72,  40,  86,  54,  78,  46, },
{  4, 100,  28, 124,   2,  98,  26, 122, },
};
#endif

#if 1
const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={
{117,  62, 158, 103, 113,  58, 155, 100, },
{ 34, 199,  21, 186,  31, 196,  17, 182, },
{144,  89, 131,  76, 141,  86, 127,  72, },
{  0, 165,  41, 206,  10, 175,  52, 217, },
{110,  55, 151,  96, 120,  65, 162, 107, },
{ 28, 193,  14, 179,  38, 203,  24, 189, },
{138,  83, 124,  69, 148,  93, 134,  79, },
{  7, 172,  48, 213,   3, 168,  45, 210, },
};
#elif 1
// tries to correct a gamma of 1.5
const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={
{  0, 143,  18, 200,   2, 156,  25, 215, },
{ 78,  28, 125,  64,  89,  36, 138,  74, },
{ 10, 180,   3, 161,  16, 195,   8, 175, },
{109,  51,  93,  38, 121,  60, 105,  47, },
{  1, 152,  23, 210,   0, 147,  20, 205, },
{ 85,  33, 134,  71,  81,  30, 130,  67, },
{ 14, 190,   6, 171,  12, 185,   5, 166, },
{117,  57, 101,  44, 113,  54,  97,  41, },
};
#elif 1
// tries to correct a gamma of 2.0
const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={
{  0, 124,   8, 193,   0, 140,  12, 213, },
{ 55,  14, 104,  42,  66,  19, 119,  52, },
{  3, 168,   1, 145,   6, 187,   3, 162, },
{ 86,  31,  70,  21,  99,  39,  82,  28, },
{  0, 134,  11, 206,   0, 129,   9, 200, },
{ 62,  17, 114,  48,  58,  16, 109,  45, },
{  5, 181,   2, 157,   4, 175,   1, 151, },
{ 95,  36,  78,  26,  90,  34,  74,  24, },
};
#else
// tries to correct a gamma of 2.5
const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={
{  0, 107,   3, 187,   0, 125,   6, 212, },
{ 39,   7,  86,  28,  49,  11, 102,  36, },
{  1, 158,   0, 131,   3, 180,   1, 151, },
{ 68,  19,  52,  12,  81,  25,  64,  17, },
{  0, 119,   5, 203,   0, 113,   4, 195, },
{ 45,   9,  96,  33,  42,   8,  91,  30, },
{  2, 172,   1, 144,   2, 165,   0, 137, },
{ 77,  23,  60,  15,  72,  21,  56,  14, },
};
#endif

#ifdef HAVE_MMX

/* hope these constant values are cache line aligned */
uint64_t attribute_used __attribute__((aligned(8))) mmx_00ffw = 0x00ff00ff00ff00ffULL;
uint64_t attribute_used __attribute__((aligned(8))) mmx_redmask = 0xf8f8f8f8f8f8f8f8ULL;
uint64_t attribute_used __attribute__((aligned(8))) mmx_grnmask = 0xfcfcfcfcfcfcfcfcULL;

uint64_t attribute_used __attribute__((aligned(8))) M24A=   0x00FF0000FF0000FFULL;
uint64_t attribute_used __attribute__((aligned(8))) M24B=   0xFF0000FF0000FF00ULL;
uint64_t attribute_used __attribute__((aligned(8))) M24C=   0x0000FF0000FF0000ULL;

// the volatile is required because gcc otherwise optimizes some writes away not knowing that these
// are read in the asm block
volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;
volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;
volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;
volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;

uint64_t __attribute__((aligned(8))) dither4[2]={
	0x0103010301030103LL,
	0x0200020002000200LL,};

uint64_t __attribute__((aligned(8))) dither8[2]={
	0x0602060206020602LL,
	0x0004000400040004LL,};

#undef HAVE_MMX

//MMX versions
#undef RENAME
#define HAVE_MMX
#undef HAVE_MMX2
#undef HAVE_3DNOW
#define RENAME(a) a ## _MMX
#include "yuv2rgb_template.c"

//MMX2 versions
#undef RENAME
#define HAVE_MMX
#define HAVE_MMX2
#undef HAVE_3DNOW
#define RENAME(a) a ## _MMX2
#include "yuv2rgb_template.c"

#endif /* defined(ARCH_X86) || defined(ARCH_X86_64) */

const int32_t Inverse_Table_6_9[8][4] = {
    {117504, 138453, 13954, 34903}, /* no sequence_display_extension */
    {117504, 138453, 13954, 34903}, /* ITU-R Rec. 709 (1990) */
    {104597, 132201, 25675, 53279}, /* unspecified */
    {104597, 132201, 25675, 53279}, /* reserved */
    {104448, 132798, 24759, 53109}, /* FCC */
    {104597, 132201, 25675, 53279}, /* ITU-R Rec. 624-4 System B, G */
    {104597, 132201, 25675, 53279}, /* SMPTE 170M */
    {117579, 136230, 16907, 35559}  /* SMPTE 240M (1987) */
};

#define RGB(i)					\
	U = pu[i];				\
	V = pv[i];				\
	r = c->table_rV[V];			\
	g = c->table_gU[U] + c->table_gV[V];		\
	b = c->table_bU[U];

#define DST1(i)					\
	Y = py_1[2*i];				\
	dst_1[2*i] = r[Y] + g[Y] + b[Y];	\
	Y = py_1[2*i+1];			\
	dst_1[2*i+1] = r[Y] + g[Y] + b[Y];

#define DST2(i)					\
	Y = py_2[2*i];				\
	dst_2[2*i] = r[Y] + g[Y] + b[Y];	\
	Y = py_2[2*i+1];			\
	dst_2[2*i+1] = r[Y] + g[Y] + b[Y];

#define DST1RGB(i)							\
	Y = py_1[2*i];							\
	dst_1[6*i] = r[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = b[Y];	\
	Y = py_1[2*i+1];						\
	dst_1[6*i+3] = r[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = b[Y];

#define DST2RGB(i)							\
	Y = py_2[2*i];							\
	dst_2[6*i] = r[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = b[Y];	\
	Y = py_2[2*i+1];						\
	dst_2[6*i+3] = r[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = b[Y];

#define DST1BGR(i)							\
	Y = py_1[2*i];							\
	dst_1[6*i] = b[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = r[Y];	\
	Y = py_1[2*i+1];						\
	dst_1[6*i+3] = b[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = r[Y];

#define DST2BGR(i)							\
	Y = py_2[2*i];							\
	dst_2[6*i] = b[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = r[Y];	\
	Y = py_2[2*i+1];						\
	dst_2[6*i+3] = b[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = r[Y];

#define PROLOG(func_name, dst_type) \
static int func_name(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, \
             int srcSliceH, uint8_t* dst[], int dstStride[]){\
    int y;\
\
    if(c->srcFormat == IMGFMT_422P){\
	srcStride[1] *= 2;\
	srcStride[2] *= 2;\
    }\
    for(y=0; y<srcSliceH; y+=2){\
	dst_type *dst_1= (dst_type*)(dst[0] + (y+srcSliceY  )*dstStride[0]);\
	dst_type *dst_2= (dst_type*)(dst[0] + (y+srcSliceY+1)*dstStride[0]);\
	dst_type *r, *g, *b;\
	uint8_t *py_1= src[0] + y*srcStride[0];\
	uint8_t *py_2= py_1 + srcStride[0];\
	uint8_t *pu= src[1] + (y>>1)*srcStride[1];\
	uint8_t *pv= src[2] + (y>>1)*srcStride[2];\
	unsigned int h_size= c->dstW>>3;\
	while (h_size--) {\
	    int U, V, Y;\

#define EPILOG(dst_delta)\
	    pu += 4;\
	    pv += 4;\
	    py_1 += 8;\
	    py_2 += 8;\
	    dst_1 += dst_delta;\
	    dst_2 += dst_delta;\
	}\
    }\
    return srcSliceH;\
}

PROLOG(yuv2rgb_c_32, uint32_t)
	RGB(0);
	DST1(0);
	DST2(0);

	RGB(1);
	DST2(1);
	DST1(1);

	RGB(2);
	DST1(2);
	DST2(2);

	RGB(3);
	DST2(3);
	DST1(3);
EPILOG(8)

PROLOG(yuv2rgb_c_24_rgb, uint8_t)
	RGB(0);
	DST1RGB(0);
	DST2RGB(0);

	RGB(1);
	DST2RGB(1);
	DST1RGB(1);

	RGB(2);
	DST1RGB(2);
	DST2RGB(2);

	RGB(3);
	DST2RGB(3);
	DST1RGB(3);
EPILOG(24)

// only trivial mods from yuv2rgb_c_24_rgb
PROLOG(yuv2rgb_c_24_bgr, uint8_t)
	RGB(0);
	DST1BGR(0);
	DST2BGR(0);

	RGB(1);
	DST2BGR(1);
	DST1BGR(1);

	RGB(2);
	DST1BGR(2);
	DST2BGR(2);

	RGB(3);
	DST2BGR(3);
	DST1BGR(3);
EPILOG(24)

// This is exactly the same code as yuv2rgb_c_32 except for the types of
// r, g, b, dst_1, dst_2
PROLOG(yuv2rgb_c_16, uint16_t)
	RGB(0);
	DST1(0);
	DST2(0);

	RGB(1);
	DST2(1);
	DST1(1);

	RGB(2);
	DST1(2);
	DST2(2);

	RGB(3);
	DST2(3);
	DST1(3);
EPILOG(8)

// This is exactly the same code as yuv2rgb_c_32 except for the types of
// r, g, b, dst_1, dst_2
PROLOG(yuv2rgb_c_8, uint8_t)
	RGB(0);
	DST1(0);
	DST2(0);

	RGB(1);
	DST2(1);
	DST1(1);

	RGB(2);
	DST1(2);
	DST2(2);

	RGB(3);
	DST2(3);
	DST1(3);
EPILOG(8)

// r, g, b, dst_1, dst_2
PROLOG(yuv2rgb_c_8_ordered_dither, uint8_t)
	const uint8_t *d32= dither_8x8_32[y&7];
	const uint8_t *d64= dither_8x8_73[y&7];
#define DST1bpp8(i,o)					\
	Y = py_1[2*i];				\
	dst_1[2*i] = r[Y+d32[0+o]] + g[Y+d32[0+o]] + b[Y+d64[0+o]];	\
	Y = py_1[2*i+1];			\
	dst_1[2*i+1] = r[Y+d32[1+o]] + g[Y+d32[1+o]] + b[Y+d64[1+o]];

#define DST2bpp8(i,o)					\
	Y = py_2[2*i];				\
	dst_2[2*i] =  r[Y+d32[8+o]] + g[Y+d32[8+o]] + b[Y+d64[8+o]];	\
	Y = py_2[2*i+1];			\
	dst_2[2*i+1] =  r[Y+d32[9+o]] + g[Y+d32[9+o]] + b[Y+d64[9+o]];


	RGB(0);
	DST1bpp8(0,0);
	DST2bpp8(0,0);

	RGB(1);
	DST2bpp8(1,2);
	DST1bpp8(1,2);

	RGB(2);
	DST1bpp8(2,4);
	DST2bpp8(2,4);

	RGB(3);
	DST2bpp8(3,6);
	DST1bpp8(3,6);
EPILOG(8)


// This is exactly the same code as yuv2rgb_c_32 except for the types of
// r, g, b, dst_1, dst_2
PROLOG(yuv2rgb_c_4, uint8_t)
        int acc;
#define DST1_4(i)					\
	Y = py_1[2*i];				\
	acc = r[Y] + g[Y] + b[Y];	\
	Y = py_1[2*i+1];			\
        acc |= (r[Y] + g[Y] + b[Y])<<4;\
	dst_1[i] = acc; 

#define DST2_4(i)					\
	Y = py_2[2*i];				\
	acc = r[Y] + g[Y] + b[Y];	\
	Y = py_2[2*i+1];			\
	acc |= (r[Y] + g[Y] + b[Y])<<4;\
	dst_2[i] = acc; 
	
        RGB(0);
	DST1_4(0);
	DST2_4(0);

	RGB(1);
	DST2_4(1);
	DST1_4(1);

	RGB(2);
	DST1_4(2);
	DST2_4(2);

	RGB(3);
	DST2_4(3);
	DST1_4(3);
EPILOG(4)

PROLOG(yuv2rgb_c_4_ordered_dither, uint8_t)
	const uint8_t *d64= dither_8x8_73[y&7];
	const uint8_t *d128=dither_8x8_220[y&7];
        int acc;

#define DST1bpp4(i,o)					\
	Y = py_1[2*i];				\
	acc = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]];	\
	Y = py_1[2*i+1];			\
	acc |= (r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]])<<4;\
        dst_1[i]= acc;

#define DST2bpp4(i,o)					\
	Y = py_2[2*i];				\
	acc =  r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]];	\
	Y = py_2[2*i+1];			\
	acc |=  (r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]])<<4;\
        dst_2[i]= acc;


	RGB(0);
	DST1bpp4(0,0);
	DST2bpp4(0,0);

	RGB(1);
	DST2bpp4(1,2);
	DST1bpp4(1,2);

	RGB(2);
	DST1bpp4(2,4);
	DST2bpp4(2,4);

	RGB(3);
	DST2bpp4(3,6);
	DST1bpp4(3,6);
EPILOG(4)

// This is exactly the same code as yuv2rgb_c_32 except for the types of
// r, g, b, dst_1, dst_2
PROLOG(yuv2rgb_c_4b, uint8_t)
	RGB(0);
	DST1(0);
	DST2(0);

	RGB(1);
	DST2(1);
	DST1(1);

	RGB(2);
	DST1(2);
	DST2(2);

	RGB(3);
	DST2(3);
	DST1(3);
EPILOG(8)

PROLOG(yuv2rgb_c_4b_ordered_dither, uint8_t)
	const uint8_t *d64= dither_8x8_73[y&7];
	const uint8_t *d128=dither_8x8_220[y&7];

#define DST1bpp4b(i,o)					\
	Y = py_1[2*i];				\
	dst_1[2*i] = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]];	\
	Y = py_1[2*i+1];			\
	dst_1[2*i+1] = r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]];

#define DST2bpp4b(i,o)					\
	Y = py_2[2*i];				\
	dst_2[2*i] =  r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]];	\
	Y = py_2[2*i+1];			\
	dst_2[2*i+1] =  r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]];


	RGB(0);
	DST1bpp4b(0,0);
	DST2bpp4b(0,0);

	RGB(1);
	DST2bpp4b(1,2);
	DST1bpp4b(1,2);

	RGB(2);
	DST1bpp4b(2,4);
	DST2bpp4b(2,4);

	RGB(3);
	DST2bpp4b(3,6);
	DST1bpp4b(3,6);
EPILOG(8)

PROLOG(yuv2rgb_c_1_ordered_dither, uint8_t)
	const uint8_t *d128=dither_8x8_220[y&7];
	char out_1=0, out_2=0;
	g= c->table_gU[128] + c->table_gV[128];

#define DST1bpp1(i,o)					\
	Y = py_1[2*i];				\
	out_1+= out_1 + g[Y+d128[0+o]];	\
	Y = py_1[2*i+1];			\
	out_1+= out_1 + g[Y+d128[1+o]];

#define DST2bpp1(i,o)					\
	Y = py_2[2*i];				\
	out_2+= out_2 + g[Y+d128[8+o]];	\
	Y = py_2[2*i+1];			\
	out_2+= out_2 + g[Y+d128[9+o]];

	DST1bpp1(0,0);
	DST2bpp1(0,0);

	DST2bpp1(1,2);
	DST1bpp1(1,2);

	DST1bpp1(2,4);
	DST2bpp1(2,4);

	DST2bpp1(3,6);
	DST1bpp1(3,6);
	
	dst_1[0]= out_1;
	dst_2[0]= out_2;
EPILOG(1)

SwsFunc yuv2rgb_get_func_ptr (SwsContext *c)
{
#if defined(HAVE_MMX2) || defined(HAVE_MMX)
    if(c->flags & SWS_CPU_CAPS_MMX2){
	switch(c->dstFormat){
	case IMGFMT_BGR32: return yuv420_rgb32_MMX2;
	case IMGFMT_BGR24: return yuv420_rgb24_MMX2;
	case IMGFMT_BGR16: return yuv420_rgb16_MMX2;
	case IMGFMT_BGR15: return yuv420_rgb15_MMX2;
	}
    }
    if(c->flags & SWS_CPU_CAPS_MMX){
	switch(c->dstFormat){
	case IMGFMT_BGR32: return yuv420_rgb32_MMX;
	case IMGFMT_BGR24: return yuv420_rgb24_MMX;
	case IMGFMT_BGR16: return yuv420_rgb16_MMX;
	case IMGFMT_BGR15: return yuv420_rgb15_MMX;
	}
    }
#endif
#ifdef HAVE_MLIB
    {
	SwsFunc t= yuv2rgb_init_mlib(c);
	if(t) return t;
    }
#endif
#ifdef HAVE_ALTIVEC
    if (c->flags & SWS_CPU_CAPS_ALTIVEC)
    {
	SwsFunc t = yuv2rgb_init_altivec(c);
	if(t) return t;
    }
#endif

    MSG_WARN("No accelerated colorspace conversion found\n");

    switch(c->dstFormat){
    case IMGFMT_RGB32:
    case IMGFMT_BGR32: return yuv2rgb_c_32;
    case IMGFMT_RGB24: return yuv2rgb_c_24_rgb;
    case IMGFMT_BGR24: return yuv2rgb_c_24_bgr;
    case IMGFMT_RGB16:
    case IMGFMT_BGR16:
    case IMGFMT_RGB15:
    case IMGFMT_BGR15: return yuv2rgb_c_16;
    case IMGFMT_RGB8:
    case IMGFMT_BGR8:  return yuv2rgb_c_8_ordered_dither;
    case IMGFMT_RGB4:
    case IMGFMT_BGR4:  return yuv2rgb_c_4_ordered_dither;
    case IMGFMT_RG4B:
    case IMGFMT_BG4B:  return yuv2rgb_c_4b_ordered_dither;
    case IMGFMT_RGB1:
    case IMGFMT_BGR1:  return yuv2rgb_c_1_ordered_dither;
    default:
    	assert(0);
    }
    return NULL;
}

static int div_round (int dividend, int divisor)
{
    if (dividend > 0)
	return (dividend + (divisor>>1)) / divisor;
    else
	return -((-dividend + (divisor>>1)) / divisor);
}

int yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
{  
    const int isRgb = IMGFMT_IS_BGR(c->dstFormat);
    const int bpp = isRgb?IMGFMT_RGB_DEPTH(c->dstFormat):IMGFMT_BGR_DEPTH(c->dstFormat);
    int i;
    uint8_t table_Y[1024];
    uint32_t *table_32 = 0;
    uint16_t *table_16 = 0;
    uint8_t *table_8 = 0;
    uint8_t *table_332 = 0;
    uint8_t *table_121 = 0;
    uint8_t *table_1 = 0;
    int entry_size = 0;
    void *table_r = 0, *table_g = 0, *table_b = 0;
    void *table_start;

    int64_t crv =  inv_table[0];
    int64_t cbu =  inv_table[1];
    int64_t cgu = -inv_table[2];
    int64_t cgv = -inv_table[3];
    int64_t cy  = 1<<16;
    int64_t oy  = 0;

//printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);
    if(!fullRange){
	cy= (cy*255) / 219;
	oy= 16<<16;
    }
	
    cy = (cy *contrast             )>>16;
    crv= (crv*contrast * saturation)>>32;
    cbu= (cbu*contrast * saturation)>>32;
    cgu= (cgu*contrast * saturation)>>32;
    cgv= (cgv*contrast * saturation)>>32;
//printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);
    oy -= 256*brightness;

    for (i = 0; i < 1024; i++) {
	int j;

	j= (cy*(((i - 384)<<16) - oy) + (1<<31))>>32;
	j = (j < 0) ? 0 : ((j > 255) ? 255 : j);
	table_Y[i] = j;
    }

    switch (bpp) {
    case 32:
	table_start= table_32 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint32_t));

	entry_size = sizeof (uint32_t);
	table_r = table_32 + 197;
	table_b = table_32 + 197 + 685;
	table_g = table_32 + 197 + 2*682;

	for (i = -197; i < 256+197; i++)
	    ((uint32_t *)table_r)[i] = table_Y[i+384] << (isRgb ? 16 : 0);
	for (i = -132; i < 256+132; i++)
	    ((uint32_t *)table_g)[i] = table_Y[i+384] << 8;
	for (i = -232; i < 256+232; i++)
	    ((uint32_t *)table_b)[i] = table_Y[i+384] << (isRgb ? 0 : 16);
	break;

    case 24:
	table_start= table_8 = av_malloc ((256 + 2*232) * sizeof (uint8_t));

	entry_size = sizeof (uint8_t);
	table_r = table_g = table_b = table_8 + 232;

	for (i = -232; i < 256+232; i++)
	    ((uint8_t * )table_b)[i] = table_Y[i+384];
	break;

    case 15:
    case 16:
	table_start= table_16 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint16_t));

	entry_size = sizeof (uint16_t);
	table_r = table_16 + 197;
	table_b = table_16 + 197 + 685;
	table_g = table_16 + 197 + 2*682;

	for (i = -197; i < 256+197; i++) {
	    int j = table_Y[i+384] >> 3;

	    if (isRgb)
		j <<= ((bpp==16) ? 11 : 10);

	    ((uint16_t *)table_r)[i] = j;
	}
	for (i = -132; i < 256+132; i++) {
	    int j = table_Y[i+384] >> ((bpp==16) ? 2 : 3);

	    ((uint16_t *)table_g)[i] = j << 5;
	}
	for (i = -232; i < 256+232; i++) {
	    int j = table_Y[i+384] >> 3;

	    if (!isRgb)
		j <<= ((bpp==16) ? 11 : 10);

	    ((uint16_t *)table_b)[i] = j;
	}
	break;

    case 8:
	table_start= table_332 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint8_t));

	entry_size = sizeof (uint8_t);
	table_r = table_332 + 197;
	table_b = table_332 + 197 + 685;
	table_g = table_332 + 197 + 2*682;

	for (i = -197; i < 256+197; i++) {
	    int j = (table_Y[i+384 - 16] + 18)/36;

	    if (isRgb)
		j <<= 5;

	    ((uint8_t *)table_r)[i] = j;
	}
	for (i = -132; i < 256+132; i++) {
	    int j = (table_Y[i+384 - 16] + 18)/36;

	    if (!isRgb)
		j <<= 1;

	    ((uint8_t *)table_g)[i] = j << 2;
	}
	for (i = -232; i < 256+232; i++) {
	    int j = (table_Y[i+384 - 37] + 43)/85;

	    if (!isRgb)
		j <<= 6;

	    ((uint8_t *)table_b)[i] = j;
	}
	break;
    case 4:
    case 4|128:
	table_start= table_121 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint8_t));

	entry_size = sizeof (uint8_t);
	table_r = table_121 + 197;
	table_b = table_121 + 197 + 685;
	table_g = table_121 + 197 + 2*682;

	for (i = -197; i < 256+197; i++) {
	    int j = table_Y[i+384 - 110] >> 7;

	    if (isRgb)
		j <<= 3;

	    ((uint8_t *)table_r)[i] = j;
	}
	for (i = -132; i < 256+132; i++) {
	    int j = (table_Y[i+384 - 37]+ 43)/85;

	    ((uint8_t *)table_g)[i] = j << 1;
	}
	for (i = -232; i < 256+232; i++) {
	    int j =table_Y[i+384 - 110] >> 7;

	    if (!isRgb)
		j <<= 3;

	    ((uint8_t *)table_b)[i] = j;
	}
	break;

    case 1:
	table_start= table_1 = av_malloc (256*2 * sizeof (uint8_t));

	entry_size = sizeof (uint8_t);
	table_g = table_1;
	table_r = table_b = NULL;

	for (i = 0; i < 256+256; i++) {
	    int j = table_Y[i + 384 - 110]>>7;

	    ((uint8_t *)table_g)[i] = j;
	}
	break;

    default:
	table_start= NULL;
	MSG_ERR("%ibpp not supported by yuv2rgb\n", bpp);
	//free mem?
	return -1;
    }

    for (i = 0; i < 256; i++) {
	c->table_rV[i] = table_r + entry_size * div_round (crv * (i-128), 76309);
	c->table_gU[i] = table_g + entry_size * div_round (cgu * (i-128), 76309);
	c->table_gV[i] = entry_size * div_round (cgv * (i-128), 76309);
	c->table_bU[i] = table_b + entry_size * div_round (cbu * (i-128), 76309);
    }

    av_free(c->yuvTable);
    c->yuvTable= table_start;
    return 0;
}