yuv2rgb.c

   1 /*
   2  * yuv2rgb.c, Software YUV to RGB converter
   3  *
   4  *  Copyright (C) 1999, Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
   5  *
   6  *  Functions broken out from display_x11.c and several new modes
   7  *  added by Håkan Hjort <d95hjort@dtek.chalmers.se>
   8  *
   9  *  15 & 16 bpp support by Franck Sicard <Franck.Sicard@solsoft.fr>
  10  *
  11  *  MMX/MMX2 template stuff (needed for fast movntq support),
  12  *  1,4,8bpp support and context / deglobalize stuff
  13  *  by Michael Niedermayer (michaelni@gmx.at)
  14  *
  15  *  This file is part of mpeg2dec, a free MPEG-2 video decoder
  16  *
  17  *  mpeg2dec is free software; you can redistribute it and/or modify
  18  *  it under the terms of the GNU General Public License as published by
  19  *  the Free Software Foundation; either version 2, or (at your option)
  20  *  any later version.
  21  *
  22  *  mpeg2dec is distributed in the hope that it will be useful,
  23  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  *  GNU General Public License for more details.
  26  *
  27  *  You should have received a copy of the GNU General Public License
  28  *  along with mpeg2dec; if not, write to the Free Software
  29  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  30  */
  31
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <inttypes.h>
  35 #include <assert.h>
  36
  37 #include "config.h"
  38 #include "rgb2rgb.h"
  39 #include "swscale.h"
  40 #include "swscale_internal.h"
  41
  42 #define DITHER1XBPP // only for mmx
  43
  44 const uint8_t  __attribute__((aligned(8))) dither_2x2_4[2][8]={
  45 {  1,   3,   1,   3,   1,   3,   1,   3, },
  46 {  2,   0,   2,   0,   2,   0,   2,   0, },
  47 };
  48
  49 const uint8_t  __attribute__((aligned(8))) dither_2x2_8[2][8]={
  50 {  6,   2,   6,   2,   6,   2,   6,   2, },
  51 {  0,   4,   0,   4,   0,   4,   0,   4, },
  52 };
  53
  54 const uint8_t  __attribute__((aligned(8))) dither_8x8_32[8][8]={
  55 { 17,   9,  23,  15,  16,   8,  22,  14, },
  56 {  5,  29,   3,  27,   4,  28,   2,  26, },
  57 { 21,  13,  19,  11,  20,  12,  18,  10, },
  58 {  0,  24,   6,  30,   1,  25,   7,  31, },
  59 { 16,   8,  22,  14,  17,   9,  23,  15, },
  60 {  4,  28,   2,  26,   5,  29,   3,  27, },
  61 { 20,  12,  18,  10,  21,  13,  19,  11, },
  62 {  1,  25,   7,  31,   0,  24,   6,  30, },
  63 };
  64
  65 #if 0
  66 const uint8_t  __attribute__((aligned(8))) dither_8x8_64[8][8]={
  67 {  0,  48,  12,  60,   3,  51,  15,  63, },
  68 { 32,  16,  44,  28,  35,  19,  47,  31, },
  69 {  8,  56,   4,  52,  11,  59,   7,  55, },
  70 { 40,  24,  36,  20,  43,  27,  39,  23, },
  71 {  2,  50,  14,  62,   1,  49,  13,  61, },
  72 { 34,  18,  46,  30,  33,  17,  45,  29, },
  73 { 10,  58,   6,  54,   9,  57,   5,  53, },
  74 { 42,  26,  38,  22,  41,  25,  37,  21, },
  75 };
  76 #endif
  77
  78 const uint8_t  __attribute__((aligned(8))) dither_8x8_73[8][8]={
  79 {  0,  55,  14,  68,   3,  58,  17,  72, },
  80 { 37,  18,  50,  32,  40,  22,  54,  35, },
  81 {  9,  64,   5,  59,  13,  67,   8,  63, },
  82 { 46,  27,  41,  23,  49,  31,  44,  26, },
  83 {  2,  57,  16,  71,   1,  56,  15,  70, },
  84 { 39,  21,  52,  34,  38,  19,  51,  33, },
  85 { 11,  66,   7,  62,  10,  65,   6,  60, },
  86 { 48,  30,  43,  25,  47,  29,  42,  24, },
  87 };
  88
  89 #if 0
  90 const uint8_t  __attribute__((aligned(8))) dither_8x8_128[8][8]={
  91 { 68,  36,  92,  60,  66,  34,  90,  58, },
  92 { 20, 116,  12, 108,  18, 114,  10, 106, },
  93 { 84,  52,  76,  44,  82,  50,  74,  42, },
  94 {  0,  96,  24, 120,   6, 102,  30, 126, },
  95 { 64,  32,  88,  56,  70,  38,  94,  62, },
  96 { 16, 112,   8, 104,  22, 118,  14, 110, },
  97 { 80,  48,  72,  40,  86,  54,  78,  46, },
  98 {  4, 100,  28, 124,   2,  98,  26, 122, },
  99 };
 100 #endif
 101
 102 #if 1
 103 const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={
 104 {117,  62, 158, 103, 113,  58, 155, 100, },
 105 { 34, 199,  21, 186,  31, 196,  17, 182, },
 106 {144,  89, 131,  76, 141,  86, 127,  72, },
 107 {  0, 165,  41, 206,  10, 175,  52, 217, },
 108 {110,  55, 151,  96, 120,  65, 162, 107, },
 109 { 28, 193,  14, 179,  38, 203,  24, 189, },
 110 {138,  83, 124,  69, 148,  93, 134,  79, },
 111 {  7, 172,  48, 213,   3, 168,  45, 210, },
 112 };
 113 #elif 1
 114 // tries to correct a gamma of 1.5
 115 const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={
 116 {  0, 143,  18, 200,   2, 156,  25, 215, },
 117 { 78,  28, 125,  64,  89,  36, 138,  74, },
 118 { 10, 180,   3, 161,  16, 195,   8, 175, },
 119 {109,  51,  93,  38, 121,  60, 105,  47, },
 120 {  1, 152,  23, 210,   0, 147,  20, 205, },
 121 { 85,  33, 134,  71,  81,  30, 130,  67, },
 122 { 14, 190,   6, 171,  12, 185,   5, 166, },
 123 {117,  57, 101,  44, 113,  54,  97,  41, },
 124 };
 125 #elif 1
 126 // tries to correct a gamma of 2.0
 127 const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={
 128 {  0, 124,   8, 193,   0, 140,  12, 213, },
 129 { 55,  14, 104,  42,  66,  19, 119,  52, },
 130 {  3, 168,   1, 145,   6, 187,   3, 162, },
 131 { 86,  31,  70,  21,  99,  39,  82,  28, },
 132 {  0, 134,  11, 206,   0, 129,   9, 200, },
 133 { 62,  17, 114,  48,  58,  16, 109,  45, },
 134 {  5, 181,   2, 157,   4, 175,   1, 151, },
 135 { 95,  36,  78,  26,  90,  34,  74,  24, },
 136 };
 137 #else
 138 // tries to correct a gamma of 2.5
 139 const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={
 140 {  0, 107,   3, 187,   0, 125,   6, 212, },
 141 { 39,   7,  86,  28,  49,  11, 102,  36, },
 142 {  1, 158,   0, 131,   3, 180,   1, 151, },
 143 { 68,  19,  52,  12,  81,  25,  64,  17, },
 144 {  0, 119,   5, 203,   0, 113,   4, 195, },
 145 { 45,   9,  96,  33,  42,   8,  91,  30, },
 146 {  2, 172,   1, 144,   2, 165,   0, 137, },
 147 { 77,  23,  60,  15,  72,  21,  56,  14, },
 148 };
 149 #endif
 150
 151 #ifdef HAVE_MMX
 152
 153 /* hope these constant values are cache line aligned */
 154 DECLARE_ASM_CONST(8, uint64_t, mmx_00ffw)   = 0x00ff00ff00ff00ffULL;
 155 DECLARE_ASM_CONST(8, uint64_t, mmx_redmask) = 0xf8f8f8f8f8f8f8f8ULL;
 156 DECLARE_ASM_CONST(8, uint64_t, mmx_grnmask) = 0xfcfcfcfcfcfcfcfcULL;
 157
 158 // the volatile is required because gcc otherwise optimizes some writes away not knowing that these
 159 // are read in the asm block
 160 static volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;
 161 static volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;
 162 static volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;
 163 static volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;
 164
 165 #undef HAVE_MMX
 166
 167 //MMX versions
 168 #undef RENAME
 169 #define HAVE_MMX
 170 #undef HAVE_MMX2
 171 #undef HAVE_3DNOW
 172 #define RENAME(a) a ## _MMX
 173 #include "yuv2rgb_template.c"
 174
 175 //MMX2 versions
 176 #undef RENAME
 177 #define HAVE_MMX
 178 #define HAVE_MMX2
 179 #undef HAVE_3DNOW
 180 #define RENAME(a) a ## _MMX2
 181 #include "yuv2rgb_template.c"
 182
 183 #endif /* HAVE_MMX */
 184
 185 const int32_t Inverse_Table_6_9[8][4] = {
 186     {117504, 138453, 13954, 34903}, /* no sequence_display_extension */
 187     {117504, 138453, 13954, 34903}, /* ITU-R Rec. 709 (1990) */
 188     {104597, 132201, 25675, 53279}, /* unspecified */
 189     {104597, 132201, 25675, 53279}, /* reserved */
 190     {104448, 132798, 24759, 53109}, /* FCC */
 191     {104597, 132201, 25675, 53279}, /* ITU-R Rec. 624-4 System B, G */
 192     {104597, 132201, 25675, 53279}, /* SMPTE 170M */
 193     {117579, 136230, 16907, 35559}  /* SMPTE 240M (1987) */
 194 };
 195
 196 #define RGB(i)                                      \
 197     U = pu[i];                                      \
 198     V = pv[i];                                      \
 199     r = (void *)c->table_rV[V];                     \
 200     g = (void *)(c->table_gU[U] + c->table_gV[V]);  \
 201     b = (void *)c->table_bU[U];
 202
 203 #define DST1(i)                         \
 204     Y = py_1[2*i];                      \
 205     dst_1[2*i] = r[Y] + g[Y] + b[Y];    \
 206     Y = py_1[2*i+1];                    \
 207     dst_1[2*i+1] = r[Y] + g[Y] + b[Y];
 208
 209 #define DST2(i)                         \
 210     Y = py_2[2*i];                      \
 211     dst_2[2*i] = r[Y] + g[Y] + b[Y];    \
 212     Y = py_2[2*i+1];                    \
 213     dst_2[2*i+1] = r[Y] + g[Y] + b[Y];
 214
 215 #define DST1RGB(i)                                                \
 216     Y = py_1[2*i];                                                \
 217     dst_1[6*i] = r[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = b[Y];  \
 218     Y = py_1[2*i+1];                                              \
 219     dst_1[6*i+3] = r[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = b[Y];
 220
 221 #define DST2RGB(i)                                                \
 222     Y = py_2[2*i];                                                \
 223     dst_2[6*i] = r[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = b[Y];  \
 224     Y = py_2[2*i+1];                                              \
 225     dst_2[6*i+3] = r[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = b[Y];
 226
 227 #define DST1BGR(i)                                                \
 228     Y = py_1[2*i];                                                \
 229     dst_1[6*i] = b[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = r[Y];  \
 230     Y = py_1[2*i+1];                                              \
 231     dst_1[6*i+3] = b[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = r[Y];
 232
 233 #define DST2BGR(i)                                                \
 234     Y = py_2[2*i];                                                \
 235     dst_2[6*i] = b[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = r[Y];  \
 236     Y = py_2[2*i+1];                                              \
 237     dst_2[6*i+3] = b[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = r[Y];
 238
 239 #define PROLOG(func_name, dst_type) \
 240 static int func_name(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, \
 241                      int srcSliceH, uint8_t* dst[], int dstStride[]){\
 242     int y;\
 243 \
 244     if (c->srcFormat == PIX_FMT_YUV422P){\
 245         srcStride[1] *= 2;\
 246         srcStride[2] *= 2;\
 247     }\
 248     for (y=0; y<srcSliceH; y+=2){\
 249         dst_type *dst_1= (dst_type*)(dst[0] + (y+srcSliceY  )*dstStride[0]);\
 250         dst_type *dst_2= (dst_type*)(dst[0] + (y+srcSliceY+1)*dstStride[0]);\
 251         dst_type av_unused *r, *b;\
 252         dst_type *g;\
 253         uint8_t *py_1= src[0] + y*srcStride[0];\
 254         uint8_t *py_2= py_1 + srcStride[0];\
 255         uint8_t *pu= src[1] + (y>>1)*srcStride[1];\
 256         uint8_t *pv= src[2] + (y>>1)*srcStride[2];\
 257         unsigned int h_size= c->dstW>>3;\
 258         while (h_size--) {\
 259             int av_unused U, V;\
 260             int Y;\
 261
 262 #define EPILOG1(dst_delta)\
 263             pu += 4;\
 264             pv += 4;\
 265             py_1 += 8;\
 266             py_2 += 8;\
 267             dst_1 += dst_delta;\
 268             dst_2 += dst_delta;\
 269         }\
 270         if (c->dstW & 4) {\
 271             int av_unused Y, U, V;\
 272
 273 #define EPILOG2()\
 274         }\
 275     }\
 276     return srcSliceH;\
 277 }
 278
 279 #define EPILOG(dst_delta)\
 280     EPILOG1(dst_delta)\
 281     EPILOG2()
 282
 283 PROLOG(yuv2rgb_c_32, uint32_t)
 284     RGB(0);
 285     DST1(0);
 286     DST2(0);
 287
 288     RGB(1);
 289     DST2(1);
 290     DST1(1);
 291
 292     RGB(2);
 293     DST1(2);
 294     DST2(2);
 295
 296     RGB(3);
 297     DST2(3);
 298     DST1(3);
 299 EPILOG1(8)
 300     RGB(0);
 301     DST1(0);
 302     DST2(0);
 303
 304     RGB(1);
 305     DST2(1);
 306     DST1(1);
 307 EPILOG2()
 308
 309 PROLOG(yuv2rgb_c_24_rgb, uint8_t)
 310     RGB(0);
 311     DST1RGB(0);
 312     DST2RGB(0);
 313
 314     RGB(1);
 315     DST2RGB(1);
 316     DST1RGB(1);
 317
 318     RGB(2);
 319     DST1RGB(2);
 320     DST2RGB(2);
 321
 322     RGB(3);
 323     DST2RGB(3);
 324     DST1RGB(3);
 325 EPILOG1(24)
 326     RGB(0);
 327     DST1RGB(0);
 328     DST2RGB(0);
 329
 330     RGB(1);
 331     DST2RGB(1);
 332     DST1RGB(1);
 333 EPILOG2()
 334
 335 // only trivial mods from yuv2rgb_c_24_rgb
 336 PROLOG(yuv2rgb_c_24_bgr, uint8_t)
 337     RGB(0);
 338     DST1BGR(0);
 339     DST2BGR(0);
 340
 341     RGB(1);
 342     DST2BGR(1);
 343     DST1BGR(1);
 344
 345     RGB(2);
 346     DST1BGR(2);
 347     DST2BGR(2);
 348
 349     RGB(3);
 350     DST2BGR(3);
 351     DST1BGR(3);
 352 EPILOG1(24)
 353     RGB(0);
 354     DST1BGR(0);
 355     DST2BGR(0);
 356
 357     RGB(1);
 358     DST2BGR(1);
 359     DST1BGR(1);
 360 EPILOG2()
 361
 362 // This is exactly the same code as yuv2rgb_c_32 except for the types of
 363 // r, g, b, dst_1, dst_2
 364 PROLOG(yuv2rgb_c_16, uint16_t)
 365     RGB(0);
 366     DST1(0);
 367     DST2(0);
 368
 369     RGB(1);
 370     DST2(1);
 371     DST1(1);
 372
 373     RGB(2);
 374     DST1(2);
 375     DST2(2);
 376
 377     RGB(3);
 378     DST2(3);
 379     DST1(3);
 380 EPILOG(8)
 381
 382 // This is exactly the same code as yuv2rgb_c_32 except for the types of
 383 // r, g, b, dst_1, dst_2
 384 PROLOG(yuv2rgb_c_8, uint8_t)
 385     RGB(0);
 386     DST1(0);
 387     DST2(0);
 388
 389     RGB(1);
 390     DST2(1);
 391     DST1(1);
 392
 393     RGB(2);
 394     DST1(2);
 395     DST2(2);
 396
 397     RGB(3);
 398     DST2(3);
 399     DST1(3);
 400 EPILOG(8)
 401
 402 // r, g, b, dst_1, dst_2
 403 PROLOG(yuv2rgb_c_8_ordered_dither, uint8_t)
 404     const uint8_t *d32= dither_8x8_32[y&7];
 405     const uint8_t *d64= dither_8x8_73[y&7];
 406 #define DST1bpp8(i,o)                                               \
 407     Y = py_1[2*i];                                                  \
 408     dst_1[2*i]   = r[Y+d32[0+o]] + g[Y+d32[0+o]] + b[Y+d64[0+o]];   \
 409     Y = py_1[2*i+1];                                                \
 410     dst_1[2*i+1] = r[Y+d32[1+o]] + g[Y+d32[1+o]] + b[Y+d64[1+o]];
 411
 412 #define DST2bpp8(i,o)                                               \
 413     Y = py_2[2*i];                                                  \
 414     dst_2[2*i]   =  r[Y+d32[8+o]] + g[Y+d32[8+o]] + b[Y+d64[8+o]];  \
 415     Y = py_2[2*i+1];                                                \
 416     dst_2[2*i+1] =  r[Y+d32[9+o]] + g[Y+d32[9+o]] + b[Y+d64[9+o]];
 417
 418
 419     RGB(0);
 420     DST1bpp8(0,0);
 421     DST2bpp8(0,0);
 422
 423     RGB(1);
 424     DST2bpp8(1,2);
 425     DST1bpp8(1,2);
 426
 427     RGB(2);
 428     DST1bpp8(2,4);
 429     DST2bpp8(2,4);
 430
 431     RGB(3);
 432     DST2bpp8(3,6);
 433     DST1bpp8(3,6);
 434 EPILOG(8)
 435
 436
 437 // This is exactly the same code as yuv2rgb_c_32 except for the types of
 438 // r, g, b, dst_1, dst_2
 439 PROLOG(yuv2rgb_c_4, uint8_t)
 440     int acc;
 441 #define DST1_4(i)                   \
 442     Y = py_1[2*i];                  \
 443     acc = r[Y] + g[Y] + b[Y];       \
 444     Y = py_1[2*i+1];                \
 445     acc |= (r[Y] + g[Y] + b[Y])<<4; \
 446     dst_1[i] = acc;
 447
 448 #define DST2_4(i)                   \
 449     Y = py_2[2*i];                  \
 450     acc = r[Y] + g[Y] + b[Y];       \
 451     Y = py_2[2*i+1];                \
 452     acc |= (r[Y] + g[Y] + b[Y])<<4; \
 453     dst_2[i] = acc;
 454
 455     RGB(0);
 456     DST1_4(0);
 457     DST2_4(0);
 458
 459     RGB(1);
 460     DST2_4(1);
 461     DST1_4(1);
 462
 463     RGB(2);
 464     DST1_4(2);
 465     DST2_4(2);
 466
 467     RGB(3);
 468     DST2_4(3);
 469     DST1_4(3);
 470 EPILOG(4)
 471
 472 PROLOG(yuv2rgb_c_4_ordered_dither, uint8_t)
 473     const uint8_t *d64= dither_8x8_73[y&7];
 474     const uint8_t *d128=dither_8x8_220[y&7];
 475     int acc;
 476
 477 #define DST1bpp4(i,o)                                             \
 478     Y = py_1[2*i];                                                \
 479     acc = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]];        \
 480     Y = py_1[2*i+1];                                              \
 481     acc |= (r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]])<<4;  \
 482     dst_1[i]= acc;
 483
 484 #define DST2bpp4(i,o)                                             \
 485     Y = py_2[2*i];                                                \
 486     acc =  r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]];       \
 487     Y = py_2[2*i+1];                                              \
 488     acc |=  (r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]])<<4; \
 489     dst_2[i]= acc;
 490
 491
 492     RGB(0);
 493     DST1bpp4(0,0);
 494     DST2bpp4(0,0);
 495
 496     RGB(1);
 497     DST2bpp4(1,2);
 498     DST1bpp4(1,2);
 499
 500     RGB(2);
 501     DST1bpp4(2,4);
 502     DST2bpp4(2,4);
 503
 504     RGB(3);
 505     DST2bpp4(3,6);
 506     DST1bpp4(3,6);
 507 EPILOG(4)
 508
 509 // This is exactly the same code as yuv2rgb_c_32 except for the types of
 510 // r, g, b, dst_1, dst_2
 511 PROLOG(yuv2rgb_c_4b, uint8_t)
 512     RGB(0);
 513     DST1(0);
 514     DST2(0);
 515
 516     RGB(1);
 517     DST2(1);
 518     DST1(1);
 519
 520     RGB(2);
 521     DST1(2);
 522     DST2(2);
 523
 524     RGB(3);
 525     DST2(3);
 526     DST1(3);
 527 EPILOG(8)
 528
 529 PROLOG(yuv2rgb_c_4b_ordered_dither, uint8_t)
 530     const uint8_t *d64= dither_8x8_73[y&7];
 531     const uint8_t *d128=dither_8x8_220[y&7];
 532
 533 #define DST1bpp4b(i,o)                                                \
 534     Y = py_1[2*i];                                                    \
 535     dst_1[2*i]   = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]];   \
 536     Y = py_1[2*i+1];                                                  \
 537     dst_1[2*i+1] = r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]];
 538
 539 #define DST2bpp4b(i,o)                                                \
 540     Y = py_2[2*i];                                                    \
 541     dst_2[2*i]   =  r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]];  \
 542     Y = py_2[2*i+1];                                                  \
 543     dst_2[2*i+1] =  r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]];
 544
 545
 546     RGB(0);
 547     DST1bpp4b(0,0);
 548     DST2bpp4b(0,0);
 549
 550     RGB(1);
 551     DST2bpp4b(1,2);
 552     DST1bpp4b(1,2);
 553
 554     RGB(2);
 555     DST1bpp4b(2,4);
 556     DST2bpp4b(2,4);
 557
 558     RGB(3);
 559     DST2bpp4b(3,6);
 560     DST1bpp4b(3,6);
 561 EPILOG(8)
 562
 563 PROLOG(yuv2rgb_c_1_ordered_dither, uint8_t)
 564         const uint8_t *d128=dither_8x8_220[y&7];
 565         char out_1=0, out_2=0;
 566         g= c->table_gU[128] + c->table_gV[128];
 567
 568 #define DST1bpp1(i,o)               \
 569     Y = py_1[2*i];                  \
 570     out_1+= out_1 + g[Y+d128[0+o]]; \
 571     Y = py_1[2*i+1];                \
 572     out_1+= out_1 + g[Y+d128[1+o]];
 573
 574 #define DST2bpp1(i,o)               \
 575     Y = py_2[2*i];                  \
 576     out_2+= out_2 + g[Y+d128[8+o]]; \
 577     Y = py_2[2*i+1];                \
 578     out_2+= out_2 + g[Y+d128[9+o]];
 579
 580     DST1bpp1(0,0);
 581     DST2bpp1(0,0);
 582
 583     DST2bpp1(1,2);
 584     DST1bpp1(1,2);
 585
 586     DST1bpp1(2,4);
 587     DST2bpp1(2,4);
 588
 589     DST2bpp1(3,6);
 590     DST1bpp1(3,6);
 591
 592     dst_1[0]= out_1;
 593     dst_2[0]= out_2;
 594 EPILOG(1)
 595
 596 SwsFunc yuv2rgb_get_func_ptr (SwsContext *c)
 597 {
 598 #if defined(HAVE_MMX2) || defined(HAVE_MMX)
 599     if (c->flags & SWS_CPU_CAPS_MMX2){
 600         switch(c->dstFormat){
 601         case PIX_FMT_RGB32:  return yuv420_rgb32_MMX2;
 602         case PIX_FMT_BGR24:  return yuv420_rgb24_MMX2;
 603         case PIX_FMT_BGR565: return yuv420_rgb16_MMX2;
 604         case PIX_FMT_BGR555: return yuv420_rgb15_MMX2;
 605         }
 606     }
 607     if (c->flags & SWS_CPU_CAPS_MMX){
 608         switch(c->dstFormat){
 609         case PIX_FMT_RGB32:  return yuv420_rgb32_MMX;
 610         case PIX_FMT_BGR24:  return yuv420_rgb24_MMX;
 611         case PIX_FMT_BGR565: return yuv420_rgb16_MMX;
 612         case PIX_FMT_BGR555: return yuv420_rgb15_MMX;
 613         }
 614     }
 615 #endif
 616 #ifdef HAVE_VIS
 617     {
 618         SwsFunc t= yuv2rgb_init_vis(c);
 619         if (t) return t;
 620     }
 621 #endif
 622 #ifdef CONFIG_MLIB
 623     {
 624         SwsFunc t= yuv2rgb_init_mlib(c);
 625         if (t) return t;
 626     }
 627 #endif
 628 #ifdef HAVE_ALTIVEC
 629     if (c->flags & SWS_CPU_CAPS_ALTIVEC)
 630     {
 631         SwsFunc t = yuv2rgb_init_altivec(c);
 632         if (t) return t;
 633     }
 634 #endif
 635
 636 #ifdef ARCH_BFIN
 637     if (c->flags & SWS_CPU_CAPS_BFIN)
 638     {
 639         SwsFunc t = ff_bfin_yuv2rgb_get_func_ptr (c);
 640         if (t) return t;
 641     }
 642 #endif
 643
 644     av_log(c, AV_LOG_WARNING, "No accelerated colorspace conversion found\n");
 645
 646     switch(c->dstFormat){
 647     case PIX_FMT_BGR32:
 648     case PIX_FMT_RGB32: return yuv2rgb_c_32;
 649     case PIX_FMT_RGB24: return yuv2rgb_c_24_rgb;
 650     case PIX_FMT_BGR24: return yuv2rgb_c_24_bgr;
 651     case PIX_FMT_RGB565:
 652     case PIX_FMT_BGR565:
 653     case PIX_FMT_RGB555:
 654     case PIX_FMT_BGR555: return yuv2rgb_c_16;
 655     case PIX_FMT_RGB8:
 656     case PIX_FMT_BGR8:  return yuv2rgb_c_8_ordered_dither;
 657     case PIX_FMT_RGB4:
 658     case PIX_FMT_BGR4:  return yuv2rgb_c_4_ordered_dither;
 659     case PIX_FMT_RGB4_BYTE:
 660     case PIX_FMT_BGR4_BYTE:  return yuv2rgb_c_4b_ordered_dither;
 661     case PIX_FMT_MONOBLACK:  return yuv2rgb_c_1_ordered_dither;
 662     default:
 663         assert(0);
 664     }
 665     return NULL;
 666 }
 667
 668 static int div_round (int dividend, int divisor)
 669 {
 670     if (dividend > 0)
 671         return (dividend + (divisor>>1)) / divisor;
 672     else
 673         return -((-dividend + (divisor>>1)) / divisor);
 674 }
 675
 676 int yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
 677 {
 678     const int isRgb = isBGR(c->dstFormat);
 679     const int bpp = fmt_depth(c->dstFormat);
 680     int i;
 681     uint8_t table_Y[1024];
 682     uint32_t *table_32 = 0;
 683     uint16_t *table_16 = 0;
 684     uint8_t *table_8 = 0;
 685     uint8_t *table_332 = 0;
 686     uint8_t *table_121 = 0;
 687     uint8_t *table_1 = 0;
 688     int entry_size = 0;
 689     void *table_r = 0, *table_g = 0, *table_b = 0;
 690     void *table_start;
 691
 692     int64_t crv =  inv_table[0];
 693     int64_t cbu =  inv_table[1];
 694     int64_t cgu = -inv_table[2];
 695     int64_t cgv = -inv_table[3];
 696     int64_t cy  = 1<<16;
 697     int64_t oy  = 0;
 698
 699 //printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);
 700     if (!fullRange){
 701         cy= (cy*255) / 219;
 702         oy= 16<<16;
 703     }else{
 704         crv= (crv*224) / 255;
 705         cbu= (cbu*224) / 255;
 706         cgu= (cgu*224) / 255;
 707         cgv= (cgv*224) / 255;
 708     }
 709
 710     cy = (cy *contrast             )>>16;
 711     crv= (crv*contrast * saturation)>>32;
 712     cbu= (cbu*contrast * saturation)>>32;
 713     cgu= (cgu*contrast * saturation)>>32;
 714     cgv= (cgv*contrast * saturation)>>32;
 715 //printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);
 716     oy -= 256*brightness;
 717
 718     for (i = 0; i < 1024; i++) {
 719         int j;
 720
 721         j= (cy*(((i - 384)<<16) - oy) + (1<<31))>>32;
 722         j = (j < 0) ? 0 : ((j > 255) ? 255 : j);
 723         table_Y[i] = j;
 724     }
 725
 726     switch (bpp) {
 727     case 32:
 728         table_start= table_32 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint32_t));
 729
 730         entry_size = sizeof (uint32_t);
 731         table_r = table_32 + 197;
 732         table_b = table_32 + 197 + 685;
 733         table_g = table_32 + 197 + 2*682;
 734
 735         for (i = -197; i < 256+197; i++)
 736             ((uint32_t *)table_r)[i] = table_Y[i+384] << (isRgb ? 16 : 0);
 737         for (i = -132; i < 256+132; i++)
 738             ((uint32_t *)table_g)[i] = table_Y[i+384] << 8;
 739         for (i = -232; i < 256+232; i++)
 740             ((uint32_t *)table_b)[i] = table_Y[i+384] << (isRgb ? 0 : 16);
 741         break;
 742
 743     case 24:
 744         table_start= table_8 = av_malloc ((256 + 2*232) * sizeof (uint8_t));
 745
 746         entry_size = sizeof (uint8_t);
 747         table_r = table_g = table_b = table_8 + 232;
 748
 749         for (i = -232; i < 256+232; i++)
 750             ((uint8_t * )table_b)[i] = table_Y[i+384];
 751         break;
 752
 753     case 15:
 754     case 16:
 755         table_start= table_16 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint16_t));
 756
 757         entry_size = sizeof (uint16_t);
 758         table_r = table_16 + 197;
 759         table_b = table_16 + 197 + 685;
 760         table_g = table_16 + 197 + 2*682;
 761
 762         for (i = -197; i < 256+197; i++) {
 763             int j = table_Y[i+384] >> 3;
 764
 765             if (isRgb)
 766                 j <<= ((bpp==16) ? 11 : 10);
 767
 768             ((uint16_t *)table_r)[i] = j;
 769         }
 770         for (i = -132; i < 256+132; i++) {
 771             int j = table_Y[i+384] >> ((bpp==16) ? 2 : 3);
 772
 773             ((uint16_t *)table_g)[i] = j << 5;
 774         }
 775         for (i = -232; i < 256+232; i++) {
 776             int j = table_Y[i+384] >> 3;
 777
 778             if (!isRgb)
 779                 j <<= ((bpp==16) ? 11 : 10);
 780
 781             ((uint16_t *)table_b)[i] = j;
 782         }
 783         break;
 784
 785     case 8:
 786         table_start= table_332 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint8_t));
 787
 788         entry_size = sizeof (uint8_t);
 789         table_r = table_332 + 197;
 790         table_b = table_332 + 197 + 685;
 791         table_g = table_332 + 197 + 2*682;
 792
 793         for (i = -197; i < 256+197; i++) {
 794             int j = (table_Y[i+384 - 16] + 18)/36;
 795
 796             if (isRgb)
 797                 j <<= 5;
 798
 799             ((uint8_t *)table_r)[i] = j;
 800         }
 801         for (i = -132; i < 256+132; i++) {
 802             int j = (table_Y[i+384 - 16] + 18)/36;
 803
 804             if (!isRgb)
 805                 j <<= 1;
 806
 807             ((uint8_t *)table_g)[i] = j << 2;
 808         }
 809         for (i = -232; i < 256+232; i++) {
 810             int j = (table_Y[i+384 - 37] + 43)/85;
 811
 812             if (!isRgb)
 813                 j <<= 6;
 814
 815             ((uint8_t *)table_b)[i] = j;
 816         }
 817         break;
 818     case 4:
 819     case 4|128:
 820         table_start= table_121 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint8_t));
 821
 822         entry_size = sizeof (uint8_t);
 823         table_r = table_121 + 197;
 824         table_b = table_121 + 197 + 685;
 825         table_g = table_121 + 197 + 2*682;
 826
 827         for (i = -197; i < 256+197; i++) {
 828             int j = table_Y[i+384 - 110] >> 7;
 829
 830             if (isRgb)
 831                 j <<= 3;
 832
 833             ((uint8_t *)table_r)[i] = j;
 834         }
 835         for (i = -132; i < 256+132; i++) {
 836             int j = (table_Y[i+384 - 37]+ 43)/85;
 837
 838             ((uint8_t *)table_g)[i] = j << 1;
 839         }
 840         for (i = -232; i < 256+232; i++) {
 841             int j =table_Y[i+384 - 110] >> 7;
 842
 843             if (!isRgb)
 844                 j <<= 3;
 845
 846             ((uint8_t *)table_b)[i] = j;
 847         }
 848         break;
 849
 850     case 1:
 851         table_start= table_1 = av_malloc (256*2 * sizeof (uint8_t));
 852
 853         entry_size = sizeof (uint8_t);
 854         table_g = table_1;
 855         table_r = table_b = NULL;
 856
 857         for (i = 0; i < 256+256; i++) {
 858             int j = table_Y[i + 384 - 110]>>7;
 859
 860             ((uint8_t *)table_g)[i] = j;
 861         }
 862         break;
 863
 864     default:
 865         table_start= NULL;
 866         av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);
 867         //free mem?
 868         return -1;
 869     }
 870
 871     for (i = 0; i < 256; i++) {
 872         c->table_rV[i] = (uint8_t *)table_r + entry_size * div_round (crv * (i-128), 76309);
 873         c->table_gU[i] = (uint8_t *)table_g + entry_size * div_round (cgu * (i-128), 76309);
 874         c->table_gV[i] = entry_size * div_round (cgv * (i-128), 76309);
 875         c->table_bU[i] = (uint8_t *)table_b + entry_size * div_round (cbu * (i-128), 76309);
 876     }
 877
 878     av_free(c->yuvTable);
 879     c->yuvTable= table_start;
 880     return 0;
 881 }