yuv2rgb.c

   1 /*
   2  * software YUV to RGB converter
   3  *
   4  * Copyright (C) 2009 Konstantin Shishkov
   5  *
   6  * 1,4,8bpp support and context / deglobalize stuff
   7  * by Michael Niedermayer (michaelni@gmx.at)
   8  *
   9  * This file is part of FFmpeg.
  10  *
  11  * FFmpeg is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * FFmpeg is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with FFmpeg; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <inttypes.h>
  29 #include <assert.h>
  30
  31 #include "config.h"
  32 #include "rgb2rgb.h"
  33 #include "swscale.h"
  34 #include "swscale_internal.h"
  35 #include "libavutil/x86_cpu.h"
  36
  37 extern const uint8_t dither_8x8_32[8][8];
  38 extern const uint8_t dither_8x8_73[8][8];
  39 extern const uint8_t dither_8x8_220[8][8];
  40
  41 const int32_t ff_yuv2rgb_coeffs[8][4] = {
  42     {117504, 138453, 13954, 34903}, /* no sequence_display_extension */
  43     {117504, 138453, 13954, 34903}, /* ITU-R Rec. 709 (1990) */
  44     {104597, 132201, 25675, 53279}, /* unspecified */
  45     {104597, 132201, 25675, 53279}, /* reserved */
  46     {104448, 132798, 24759, 53109}, /* FCC */
  47     {104597, 132201, 25675, 53279}, /* ITU-R Rec. 624-4 System B, G */
  48     {104597, 132201, 25675, 53279}, /* SMPTE 170M */
  49     {117579, 136230, 16907, 35559}  /* SMPTE 240M (1987) */
  50 };
  51
  52 #define LOADCHROMA(i)                               \
  53     U = pu[i];                                      \
  54     V = pv[i];                                      \
  55     r = (void *)c->table_rV[V];                     \
  56     g = (void *)(c->table_gU[U] + c->table_gV[V]);  \
  57     b = (void *)c->table_bU[U];
  58
  59 #define PUTRGB(dst,src,i)            \
  60     Y = src[2*i];                    \
  61     dst[2*i  ] = r[Y] + g[Y] + b[Y]; \
  62     Y = src[2*i+1];                  \
  63     dst[2*i+1] = r[Y] + g[Y] + b[Y];
  64
  65 #define PUTRGB24(dst,src,i)                                  \
  66     Y = src[2*i];                                            \
  67     dst[6*i+0] = r[Y]; dst[6*i+1] = g[Y]; dst[6*i+2] = b[Y]; \
  68     Y = src[2*i+1];                                          \
  69     dst[6*i+3] = r[Y]; dst[6*i+4] = g[Y]; dst[6*i+5] = b[Y];
  70
  71 #define PUTBGR24(dst,src,i)                                  \
  72     Y = src[2*i];                                            \
  73     dst[6*i+0] = b[Y]; dst[6*i+1] = g[Y]; dst[6*i+2] = r[Y]; \
  74     Y = src[2*i+1];                                          \
  75     dst[6*i+3] = b[Y]; dst[6*i+4] = g[Y]; dst[6*i+5] = r[Y];
  76
  77 #define PUTRGBA(dst,ysrc,asrc,i,s)                      \
  78     Y = ysrc[2*i];                                      \
  79     dst[2*i  ] = r[Y] + g[Y] + b[Y] + (asrc[2*i  ]<<s); \
  80     Y = ysrc[2*i+1];                                    \
  81     dst[2*i+1] = r[Y] + g[Y] + b[Y] + (asrc[2*i+1]<<s);
  82
  83 #define PUTRGB48(dst,src,i)             \
  84     Y = src[2*i];                       \
  85     dst[12*i+ 0] = dst[12*i+ 1] = r[Y]; \
  86     dst[12*i+ 2] = dst[12*i+ 3] = g[Y]; \
  87     dst[12*i+ 4] = dst[12*i+ 5] = b[Y]; \
  88     Y = src[2*i+1];                     \
  89     dst[12*i+ 6] = dst[12*i+ 7] = r[Y]; \
  90     dst[12*i+ 8] = dst[12*i+ 9] = g[Y]; \
  91     dst[12*i+10] = dst[12*i+11] = b[Y];
  92
  93 #define YUV2RGBFUNC(func_name, dst_type, alpha) \
  94 static int func_name(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, \
  95                      int srcSliceH, uint8_t* dst[], int dstStride[]) \
  96 {\
  97     int y;\
  98 \
  99     if (!alpha && c->srcFormat == PIX_FMT_YUV422P) {\
 100         srcStride[1] *= 2;\
 101         srcStride[2] *= 2;\
 102     }\
 103     for (y=0; y<srcSliceH; y+=2) {\
 104         dst_type *dst_1 = (dst_type*)(dst[0] + (y+srcSliceY  )*dstStride[0]);\
 105         dst_type *dst_2 = (dst_type*)(dst[0] + (y+srcSliceY+1)*dstStride[0]);\
 106         dst_type av_unused *r, *b;\
 107         dst_type *g;\
 108         const uint8_t *py_1 = src[0] + y*srcStride[0];\
 109         const uint8_t *py_2 = py_1 + srcStride[0];\
 110         const uint8_t *pu = src[1] + (y>>1)*srcStride[1];\
 111         const uint8_t *pv = src[2] + (y>>1)*srcStride[2];\
 112         const uint8_t av_unused *pa_1, *pa_2;\
 113         unsigned int h_size = c->dstW>>3;\
 114         if (alpha) {\
 115             pa_1 = src[3] + y*srcStride[3];\
 116             pa_2 = pa_1 + srcStride[3];\
 117         }\
 118         while (h_size--) {\
 119             int av_unused U, V;\
 120             int Y;\
 121
 122 #define ENDYUV2RGBLINE(dst_delta)\
 123             pu += 4;\
 124             pv += 4;\
 125             py_1 += 8;\
 126             py_2 += 8;\
 127             dst_1 += dst_delta;\
 128             dst_2 += dst_delta;\
 129         }\
 130         if (c->dstW & 4) {\
 131             int av_unused Y, U, V;\
 132
 133 #define ENDYUV2RGBFUNC()\
 134         }\
 135     }\
 136     return srcSliceH;\
 137 }
 138
 139 #define CLOSEYUV2RGBFUNC(dst_delta)\
 140     ENDYUV2RGBLINE(dst_delta)\
 141     ENDYUV2RGBFUNC()
 142
 143 YUV2RGBFUNC(yuv2rgb_c_48, uint8_t, 0)
 144     LOADCHROMA(0);
 145     PUTRGB48(dst_1,py_1,0);
 146     PUTRGB48(dst_2,py_2,0);
 147
 148     LOADCHROMA(1);
 149     PUTRGB48(dst_2,py_2,1);
 150     PUTRGB48(dst_1,py_1,1);
 151
 152     LOADCHROMA(2);
 153     PUTRGB48(dst_1,py_1,2);
 154     PUTRGB48(dst_2,py_2,2);
 155
 156     LOADCHROMA(3);
 157     PUTRGB48(dst_2,py_2,3);
 158     PUTRGB48(dst_1,py_1,3);
 159 ENDYUV2RGBLINE(48)
 160     LOADCHROMA(0);
 161     PUTRGB48(dst_1,py_1,0);
 162     PUTRGB48(dst_2,py_2,0);
 163
 164     LOADCHROMA(1);
 165     PUTRGB48(dst_2,py_2,1);
 166     PUTRGB48(dst_1,py_1,1);
 167 ENDYUV2RGBFUNC()
 168
 169 YUV2RGBFUNC(yuv2rgb_c_32, uint32_t, 0)
 170     LOADCHROMA(0);
 171     PUTRGB(dst_1,py_1,0);
 172     PUTRGB(dst_2,py_2,0);
 173
 174     LOADCHROMA(1);
 175     PUTRGB(dst_2,py_2,1);
 176     PUTRGB(dst_1,py_1,1);
 177
 178     LOADCHROMA(2);
 179     PUTRGB(dst_1,py_1,2);
 180     PUTRGB(dst_2,py_2,2);
 181
 182     LOADCHROMA(3);
 183     PUTRGB(dst_2,py_2,3);
 184     PUTRGB(dst_1,py_1,3);
 185 ENDYUV2RGBLINE(8)
 186     LOADCHROMA(0);
 187     PUTRGB(dst_1,py_1,0);
 188     PUTRGB(dst_2,py_2,0);
 189
 190     LOADCHROMA(1);
 191     PUTRGB(dst_2,py_2,1);
 192     PUTRGB(dst_1,py_1,1);
 193 ENDYUV2RGBFUNC()
 194
 195 YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)
 196     LOADCHROMA(0);
 197     PUTRGBA(dst_1,py_1,pa_1,0,24);
 198     PUTRGBA(dst_2,py_2,pa_2,0,24);
 199
 200     LOADCHROMA(1);
 201     PUTRGBA(dst_2,py_2,pa_1,1,24);
 202     PUTRGBA(dst_1,py_1,pa_2,1,24);
 203
 204     LOADCHROMA(2);
 205     PUTRGBA(dst_1,py_1,pa_1,2,24);
 206     PUTRGBA(dst_2,py_2,pa_2,2,24);
 207
 208     LOADCHROMA(3);
 209     PUTRGBA(dst_2,py_2,pa_1,3,24);
 210     PUTRGBA(dst_1,py_1,pa_2,3,24);
 211     pa_1 += 8;\
 212     pa_2 += 8;\
 213 ENDYUV2RGBLINE(8)
 214     LOADCHROMA(0);
 215     PUTRGBA(dst_1,py_1,pa_1,0,24);
 216     PUTRGBA(dst_2,py_2,pa_2,0,24);
 217
 218     LOADCHROMA(1);
 219     PUTRGBA(dst_2,py_2,pa_1,1,24);
 220     PUTRGBA(dst_1,py_1,pa_2,1,24);
 221 ENDYUV2RGBFUNC()
 222
 223 YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)
 224     LOADCHROMA(0);
 225     PUTRGBA(dst_1,py_1,pa_1,0,0);
 226     PUTRGBA(dst_2,py_2,pa_2,0,0);
 227
 228     LOADCHROMA(1);
 229     PUTRGBA(dst_2,py_2,pa_2,1,0);
 230     PUTRGBA(dst_1,py_1,pa_1,1,0);
 231
 232     LOADCHROMA(2);
 233     PUTRGBA(dst_1,py_1,pa_1,2,0);
 234     PUTRGBA(dst_2,py_2,pa_2,2,0);
 235
 236     LOADCHROMA(3);
 237     PUTRGBA(dst_2,py_2,pa_2,3,0);
 238     PUTRGBA(dst_1,py_1,pa_1,3,0);
 239     pa_1 += 8;\
 240     pa_2 += 8;\
 241 ENDYUV2RGBLINE(8)
 242     LOADCHROMA(0);
 243     PUTRGBA(dst_1,py_1,pa_1,0,0);
 244     PUTRGBA(dst_2,py_2,pa_2,0,0);
 245
 246     LOADCHROMA(1);
 247     PUTRGBA(dst_2,py_2,pa_2,1,0);
 248     PUTRGBA(dst_1,py_1,pa_1,1,0);
 249 ENDYUV2RGBFUNC()
 250
 251 YUV2RGBFUNC(yuv2rgb_c_24_rgb, uint8_t, 0)
 252     LOADCHROMA(0);
 253     PUTRGB24(dst_1,py_1,0);
 254     PUTRGB24(dst_2,py_2,0);
 255
 256     LOADCHROMA(1);
 257     PUTRGB24(dst_2,py_2,1);
 258     PUTRGB24(dst_1,py_1,1);
 259
 260     LOADCHROMA(2);
 261     PUTRGB24(dst_1,py_1,2);
 262     PUTRGB24(dst_2,py_2,2);
 263
 264     LOADCHROMA(3);
 265     PUTRGB24(dst_2,py_2,3);
 266     PUTRGB24(dst_1,py_1,3);
 267 ENDYUV2RGBLINE(24)
 268     LOADCHROMA(0);
 269     PUTRGB24(dst_1,py_1,0);
 270     PUTRGB24(dst_2,py_2,0);
 271
 272     LOADCHROMA(1);
 273     PUTRGB24(dst_2,py_2,1);
 274     PUTRGB24(dst_1,py_1,1);
 275 ENDYUV2RGBFUNC()
 276
 277 // only trivial mods from yuv2rgb_c_24_rgb
 278 YUV2RGBFUNC(yuv2rgb_c_24_bgr, uint8_t, 0)
 279     LOADCHROMA(0);
 280     PUTBGR24(dst_1,py_1,0);
 281     PUTBGR24(dst_2,py_2,0);
 282
 283     LOADCHROMA(1);
 284     PUTBGR24(dst_2,py_2,1);
 285     PUTBGR24(dst_1,py_1,1);
 286
 287     LOADCHROMA(2);
 288     PUTBGR24(dst_1,py_1,2);
 289     PUTBGR24(dst_2,py_2,2);
 290
 291     LOADCHROMA(3);
 292     PUTBGR24(dst_2,py_2,3);
 293     PUTBGR24(dst_1,py_1,3);
 294 ENDYUV2RGBLINE(24)
 295     LOADCHROMA(0);
 296     PUTBGR24(dst_1,py_1,0);
 297     PUTBGR24(dst_2,py_2,0);
 298
 299     LOADCHROMA(1);
 300     PUTBGR24(dst_2,py_2,1);
 301     PUTBGR24(dst_1,py_1,1);
 302 ENDYUV2RGBFUNC()
 303
 304 // This is exactly the same code as yuv2rgb_c_32 except for the types of
 305 // r, g, b, dst_1, dst_2
 306 YUV2RGBFUNC(yuv2rgb_c_16, uint16_t, 0)
 307     LOADCHROMA(0);
 308     PUTRGB(dst_1,py_1,0);
 309     PUTRGB(dst_2,py_2,0);
 310
 311     LOADCHROMA(1);
 312     PUTRGB(dst_2,py_2,1);
 313     PUTRGB(dst_1,py_1,1);
 314
 315     LOADCHROMA(2);
 316     PUTRGB(dst_1,py_1,2);
 317     PUTRGB(dst_2,py_2,2);
 318
 319     LOADCHROMA(3);
 320     PUTRGB(dst_2,py_2,3);
 321     PUTRGB(dst_1,py_1,3);
 322 CLOSEYUV2RGBFUNC(8)
 323
 324 #if 0 // Currently unused
 325 // This is exactly the same code as yuv2rgb_c_32 except for the types of
 326 // r, g, b, dst_1, dst_2
 327 YUV2RGBFUNC(yuv2rgb_c_8, uint8_t, 0)
 328     LOADCHROMA(0);
 329     PUTRGB(dst_1,py_1,0);
 330     PUTRGB(dst_2,py_2,0);
 331
 332     LOADCHROMA(1);
 333     PUTRGB(dst_2,py_2,1);
 334     PUTRGB(dst_1,py_1,1);
 335
 336     LOADCHROMA(2);
 337     PUTRGB(dst_1,py_1,2);
 338     PUTRGB(dst_2,py_2,2);
 339
 340     LOADCHROMA(3);
 341     PUTRGB(dst_2,py_2,3);
 342     PUTRGB(dst_1,py_1,3);
 343 CLOSEYUV2RGBFUNC(8)
 344 #endif
 345
 346 // r, g, b, dst_1, dst_2
 347 YUV2RGBFUNC(yuv2rgb_c_8_ordered_dither, uint8_t, 0)
 348     const uint8_t *d32 = dither_8x8_32[y&7];
 349     const uint8_t *d64 = dither_8x8_73[y&7];
 350 #define PUTRGB8(dst,src,i,o)                                    \
 351     Y = src[2*i];                                               \
 352     dst[2*i]   = r[Y+d32[0+o]] + g[Y+d32[0+o]] + b[Y+d64[0+o]]; \
 353     Y = src[2*i+1];                                             \
 354     dst[2*i+1] = r[Y+d32[1+o]] + g[Y+d32[1+o]] + b[Y+d64[1+o]];
 355
 356     LOADCHROMA(0);
 357     PUTRGB8(dst_1,py_1,0,0);
 358     PUTRGB8(dst_2,py_2,0,0+8);
 359
 360     LOADCHROMA(1);
 361     PUTRGB8(dst_2,py_2,1,2+8);
 362     PUTRGB8(dst_1,py_1,1,2);
 363
 364     LOADCHROMA(2);
 365     PUTRGB8(dst_1,py_1,2,4);
 366     PUTRGB8(dst_2,py_2,2,4+8);
 367
 368     LOADCHROMA(3);
 369     PUTRGB8(dst_2,py_2,3,6+8);
 370     PUTRGB8(dst_1,py_1,3,6);
 371 CLOSEYUV2RGBFUNC(8)
 372
 373 #if 0 // Currently unused
 374 // This is exactly the same code as yuv2rgb_c_32 except for the types of
 375 // r, g, b, dst_1, dst_2
 376 YUV2RGBFUNC(yuv2rgb_c_4, uint8_t, 0)
 377     int acc;
 378 #define PUTRGB4(dst,src,i)          \
 379     Y = src[2*i];                   \
 380     acc = r[Y] + g[Y] + b[Y];       \
 381     Y = src[2*i+1];                 \
 382     acc |= (r[Y] + g[Y] + b[Y])<<4; \
 383     dst[i] = acc;
 384
 385     LOADCHROMA(0);
 386     PUTRGB4(dst_1,py_1,0);
 387     PUTRGB4(dst_2,py_2,0);
 388
 389     LOADCHROMA(1);
 390     PUTRGB4(dst_2,py_2,1);
 391     PUTRGB4(dst_1,py_1,1);
 392
 393     LOADCHROMA(2);
 394     PUTRGB4(dst_1,py_1,2);
 395     PUTRGB4(dst_2,py_2,2);
 396
 397     LOADCHROMA(3);
 398     PUTRGB4(dst_2,py_2,3);
 399     PUTRGB4(dst_1,py_1,3);
 400 CLOSEYUV2RGBFUNC(4)
 401 #endif
 402
 403 YUV2RGBFUNC(yuv2rgb_c_4_ordered_dither, uint8_t, 0)
 404     const uint8_t *d64 =  dither_8x8_73[y&7];
 405     const uint8_t *d128 = dither_8x8_220[y&7];
 406     int acc;
 407
 408 #define PUTRGB4D(dst,src,i,o)                                     \
 409     Y = src[2*i];                                                 \
 410     acc = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]];        \
 411     Y = src[2*i+1];                                               \
 412     acc |= (r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]])<<4;  \
 413     dst[i]= acc;
 414
 415     LOADCHROMA(0);
 416     PUTRGB4D(dst_1,py_1,0,0);
 417     PUTRGB4D(dst_2,py_2,0,0+8);
 418
 419     LOADCHROMA(1);
 420     PUTRGB4D(dst_2,py_2,1,2+8);
 421     PUTRGB4D(dst_1,py_1,1,2);
 422
 423     LOADCHROMA(2);
 424     PUTRGB4D(dst_1,py_1,2,4);
 425     PUTRGB4D(dst_2,py_2,2,4+8);
 426
 427     LOADCHROMA(3);
 428     PUTRGB4D(dst_2,py_2,3,6+8);
 429     PUTRGB4D(dst_1,py_1,3,6);
 430 CLOSEYUV2RGBFUNC(4)
 431
 432 #if 0 // Currently unused
 433 // This is exactly the same code as yuv2rgb_c_32 except for the types of
 434 // r, g, b, dst_1, dst_2
 435 YUV2RGBFUNC(yuv2rgb_c_4b, uint8_t, 0)
 436     LOADCHROMA(0);
 437     PUTRGB(dst_1,py_1,0);
 438     PUTRGB(dst_2,py_2,0);
 439
 440     LOADCHROMA(1);
 441     PUTRGB(dst_2,py_2,1);
 442     PUTRGB(dst_1,py_1,1);
 443
 444     LOADCHROMA(2);
 445     PUTRGB(dst_1,py_1,2);
 446     PUTRGB(dst_2,py_2,2);
 447
 448     LOADCHROMA(3);
 449     PUTRGB(dst_2,py_2,3);
 450     PUTRGB(dst_1,py_1,3);
 451 CLOSEYUV2RGBFUNC(8)
 452 #endif
 453
 454 YUV2RGBFUNC(yuv2rgb_c_4b_ordered_dither, uint8_t, 0)
 455     const uint8_t *d64 =  dither_8x8_73[y&7];
 456     const uint8_t *d128 = dither_8x8_220[y&7];
 457
 458 #define PUTRGB4DB(dst,src,i,o)                                    \
 459     Y = src[2*i];                                                 \
 460     dst[2*i]   = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]]; \
 461     Y = src[2*i+1];                                               \
 462     dst[2*i+1] = r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]];
 463
 464     LOADCHROMA(0);
 465     PUTRGB4DB(dst_1,py_1,0,0);
 466     PUTRGB4DB(dst_2,py_2,0,0+8);
 467
 468     LOADCHROMA(1);
 469     PUTRGB4DB(dst_2,py_2,1,2+8);
 470     PUTRGB4DB(dst_1,py_1,1,2);
 471
 472     LOADCHROMA(2);
 473     PUTRGB4DB(dst_1,py_1,2,4);
 474     PUTRGB4DB(dst_2,py_2,2,4+8);
 475
 476     LOADCHROMA(3);
 477     PUTRGB4DB(dst_2,py_2,3,6+8);
 478     PUTRGB4DB(dst_1,py_1,3,6);
 479 CLOSEYUV2RGBFUNC(8)
 480
 481 YUV2RGBFUNC(yuv2rgb_c_1_ordered_dither, uint8_t, 0)
 482         const uint8_t *d128 = dither_8x8_220[y&7];
 483         char out_1 = 0, out_2 = 0;
 484         g= c->table_gU[128] + c->table_gV[128];
 485
 486 #define PUTRGB1(out,src,i,o)    \
 487     Y = src[2*i];               \
 488     out+= out + g[Y+d128[0+o]]; \
 489     Y = src[2*i+1];             \
 490     out+= out + g[Y+d128[1+o]];
 491
 492     PUTRGB1(out_1,py_1,0,0);
 493     PUTRGB1(out_2,py_2,0,0+8);
 494
 495     PUTRGB1(out_2,py_2,1,2+8);
 496     PUTRGB1(out_1,py_1,1,2);
 497
 498     PUTRGB1(out_1,py_1,2,4);
 499     PUTRGB1(out_2,py_2,2,4+8);
 500
 501     PUTRGB1(out_2,py_2,3,6+8);
 502     PUTRGB1(out_1,py_1,3,6);
 503
 504     dst_1[0]= out_1;
 505     dst_2[0]= out_2;
 506 CLOSEYUV2RGBFUNC(1)
 507
 508 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)
 509 {
 510     SwsFunc t = NULL;
 511 #if (HAVE_MMX2 || HAVE_MMX) && CONFIG_GPL
 512      t = ff_yuv2rgb_init_mmx(c);
 513 #endif
 514 #if HAVE_VIS
 515     t = ff_yuv2rgb_init_vis(c);
 516 #endif
 517 #if CONFIG_MLIB
 518     t = ff_yuv2rgb_init_mlib(c);
 519 #endif
 520 #if HAVE_ALTIVEC
 521     if (c->flags & SWS_CPU_CAPS_ALTIVEC)
 522         t = ff_yuv2rgb_init_altivec(c);
 523 #endif
 524
 525 #if ARCH_BFIN
 526     if (c->flags & SWS_CPU_CAPS_BFIN)
 527         t = ff_yuv2rgb_get_func_ptr_bfin(c);
 528 #endif
 529
 530     if (t)
 531         return t;
 532
 533     av_log(c, AV_LOG_WARNING, "No accelerated colorspace conversion found from %s to %s.\n", sws_format_name(c->srcFormat), sws_format_name(c->dstFormat));
 534
 535     switch (c->dstFormat) {
 536     case PIX_FMT_RGB48BE:
 537     case PIX_FMT_RGB48LE:    return yuv2rgb_c_48;
 538     case PIX_FMT_ARGB:
 539     case PIX_FMT_ABGR:       if (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) return yuva2argb_c;
 540     case PIX_FMT_RGBA:
 541     case PIX_FMT_BGRA:       return (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) ? yuva2rgba_c : yuv2rgb_c_32;
 542     case PIX_FMT_RGB24:      return yuv2rgb_c_24_rgb;
 543     case PIX_FMT_BGR24:      return yuv2rgb_c_24_bgr;
 544     case PIX_FMT_RGB565:
 545     case PIX_FMT_BGR565:
 546     case PIX_FMT_RGB555:
 547     case PIX_FMT_BGR555:     return yuv2rgb_c_16;
 548     case PIX_FMT_RGB8:
 549     case PIX_FMT_BGR8:       return yuv2rgb_c_8_ordered_dither;
 550     case PIX_FMT_RGB4:
 551     case PIX_FMT_BGR4:       return yuv2rgb_c_4_ordered_dither;
 552     case PIX_FMT_RGB4_BYTE:
 553     case PIX_FMT_BGR4_BYTE:  return yuv2rgb_c_4b_ordered_dither;
 554     case PIX_FMT_MONOBLACK:  return yuv2rgb_c_1_ordered_dither;
 555     default:
 556         assert(0);
 557     }
 558     return NULL;
 559 }
 560
 561 static void fill_table(uint8_t* table[256], const int elemsize, const int inc, uint8_t *y_table)
 562 {
 563     int i;
 564     int64_t cb = 0;
 565
 566     y_table -= elemsize * (inc >> 9);
 567
 568     for (i = 0; i < 256; i++) {
 569         table[i] = y_table + elemsize * (cb >> 16);
 570         cb += inc;
 571     }
 572 }
 573
 574 static void fill_gv_table(int table[256], const int elemsize, const int inc)
 575 {
 576     int i;
 577     int64_t cb = 0;
 578     int off = -(inc >> 9);
 579
 580     for (i = 0; i < 256; i++) {
 581         table[i] = elemsize * (off + (cb >> 16));
 582         cb += inc;
 583     }
 584 }
 585
 586 av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int fullRange,
 587                                      int brightness, int contrast, int saturation)
 588 {
 589     const int isRgb =      c->dstFormat==PIX_FMT_RGB32
 590                         || c->dstFormat==PIX_FMT_RGB32_1
 591                         || c->dstFormat==PIX_FMT_BGR24
 592                         || c->dstFormat==PIX_FMT_RGB565
 593                         || c->dstFormat==PIX_FMT_RGB555
 594                         || c->dstFormat==PIX_FMT_RGB8
 595                         || c->dstFormat==PIX_FMT_RGB4
 596                         || c->dstFormat==PIX_FMT_RGB4_BYTE
 597                         || c->dstFormat==PIX_FMT_MONOBLACK;
 598     const int bpp = c->dstFormatBpp;
 599     uint8_t *y_table;
 600     uint16_t *y_table16;
 601     uint32_t *y_table32;
 602     int i, base, rbase, gbase, bbase, abase, needAlpha;
 603     const int yoffs = fullRange ? 384 : 326;
 604
 605     int64_t crv =  inv_table[0];
 606     int64_t cbu =  inv_table[1];
 607     int64_t cgu = -inv_table[2];
 608     int64_t cgv = -inv_table[3];
 609     int64_t cy  = 1<<16;
 610     int64_t oy  = 0;
 611
 612     int64_t yb = 0;
 613
 614     if (!fullRange) {
 615         cy = (cy*255) / 219;
 616         oy = 16<<16;
 617     } else {
 618         crv = (crv*224) / 255;
 619         cbu = (cbu*224) / 255;
 620         cgu = (cgu*224) / 255;
 621         cgv = (cgv*224) / 255;
 622     }
 623
 624     cy  = (cy *contrast             ) >> 16;
 625     crv = (crv*contrast * saturation) >> 32;
 626     cbu = (cbu*contrast * saturation) >> 32;
 627     cgu = (cgu*contrast * saturation) >> 32;
 628     cgv = (cgv*contrast * saturation) >> 32;
 629     oy -= 256*brightness;
 630
 631     //scale coefficients by cy
 632     crv = ((crv << 16) + 0x8000) / cy;
 633     cbu = ((cbu << 16) + 0x8000) / cy;
 634     cgu = ((cgu << 16) + 0x8000) / cy;
 635     cgv = ((cgv << 16) + 0x8000) / cy;
 636
 637     av_free(c->yuvTable);
 638
 639     switch (bpp) {
 640     case 1:
 641         c->yuvTable = av_malloc(1024);
 642         y_table = c->yuvTable;
 643         yb = -(384<<16) - oy;
 644         for (i = 0; i < 1024-110; i++) {
 645             y_table[i+110] = av_clip_uint8((yb + 0x8000) >> 16) >> 7;
 646             yb += cy;
 647         }
 648         fill_table(c->table_gU, 1, cgu, y_table + yoffs);
 649         fill_gv_table(c->table_gV, 1, cgv);
 650         break;
 651     case 4:
 652     case 4|128:
 653         rbase = isRgb ? 3 : 0;
 654         gbase = 1;
 655         bbase = isRgb ? 0 : 3;
 656         c->yuvTable = av_malloc(1024*3);
 657         y_table = c->yuvTable;
 658         yb = -(384<<16) - oy;
 659         for (i = 0; i < 1024-110; i++) {
 660             int yval = av_clip_uint8((yb + 0x8000) >> 16);
 661             y_table[i+110     ] =  (yval >> 7)       << rbase;
 662             y_table[i+ 37+1024] = ((yval + 43) / 85) << gbase;
 663             y_table[i+110+2048] =  (yval >> 7)       << bbase;
 664             yb += cy;
 665         }
 666         fill_table(c->table_rV, 1, crv, y_table + yoffs);
 667         fill_table(c->table_gU, 1, cgu, y_table + yoffs + 1024);
 668         fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);
 669         fill_gv_table(c->table_gV, 1, cgv);
 670         break;
 671     case 8:
 672         rbase = isRgb ? 5 : 0;
 673         gbase = isRgb ? 2 : 3;
 674         bbase = isRgb ? 0 : 6;
 675         c->yuvTable = av_malloc(1024*3);
 676         y_table = c->yuvTable;
 677         yb = -(384<<16) - oy;
 678         for (i = 0; i < 1024-38; i++) {
 679             int yval = av_clip_uint8((yb + 0x8000) >> 16);
 680             y_table[i+16     ] = ((yval + 18) / 36) << rbase;
 681             y_table[i+16+1024] = ((yval + 18) / 36) << gbase;
 682             y_table[i+37+2048] = ((yval + 43) / 85) << bbase;
 683             yb += cy;
 684         }
 685         fill_table(c->table_rV, 1, crv, y_table + yoffs);
 686         fill_table(c->table_gU, 1, cgu, y_table + yoffs + 1024);
 687         fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);
 688         fill_gv_table(c->table_gV, 1, cgv);
 689         break;
 690     case 15:
 691     case 16:
 692         rbase = isRgb ? bpp - 5 : 0;
 693         gbase = 5;
 694         bbase = isRgb ? 0 : (bpp - 5);
 695         c->yuvTable = av_malloc(1024*3*2);
 696         y_table16 = c->yuvTable;
 697         yb = -(384<<16) - oy;
 698         for (i = 0; i < 1024; i++) {
 699             uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
 700             y_table16[i     ] = (yval >> 3)          << rbase;
 701             y_table16[i+1024] = (yval >> (18 - bpp)) << gbase;
 702             y_table16[i+2048] = (yval >> 3)          << bbase;
 703             yb += cy;
 704         }
 705         fill_table(c->table_rV, 2, crv, y_table16 + yoffs);
 706         fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + 1024);
 707         fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2048);
 708         fill_gv_table(c->table_gV, 2, cgv);
 709         break;
 710     case 24:
 711     case 48:
 712         c->yuvTable = av_malloc(1024);
 713         y_table = c->yuvTable;
 714         yb = -(384<<16) - oy;
 715         for (i = 0; i < 1024; i++) {
 716             y_table[i] = av_clip_uint8((yb + 0x8000) >> 16);
 717             yb += cy;
 718         }
 719         fill_table(c->table_rV, 1, crv, y_table + yoffs);
 720         fill_table(c->table_gU, 1, cgu, y_table + yoffs);
 721         fill_table(c->table_bU, 1, cbu, y_table + yoffs);
 722         fill_gv_table(c->table_gV, 1, cgv);
 723         break;
 724     case 32:
 725         base = (c->dstFormat == PIX_FMT_RGB32_1 || c->dstFormat == PIX_FMT_BGR32_1) ? 8 : 0;
 726         rbase = base + (isRgb ? 16 : 0);
 727         gbase = base + 8;
 728         bbase = base + (isRgb ? 0 : 16);
 729         needAlpha = CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat);
 730         if (!needAlpha)
 731             abase = (base + 24) & 31;
 732         c->yuvTable = av_malloc(1024*3*4);
 733         y_table32 = c->yuvTable;
 734         yb = -(384<<16) - oy;
 735         for (i = 0; i < 1024; i++) {
 736             uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
 737             y_table32[i     ] = (yval << rbase) + (needAlpha ? 0 : (255 << abase));
 738             y_table32[i+1024] = yval << gbase;
 739             y_table32[i+2048] = yval << bbase;
 740             yb += cy;
 741         }
 742         fill_table(c->table_rV, 4, crv, y_table32 + yoffs);
 743         fill_table(c->table_gU, 4, cgu, y_table32 + yoffs + 1024);
 744         fill_table(c->table_bU, 4, cbu, y_table32 + yoffs + 2048);
 745         fill_gv_table(c->table_gV, 4, cgv);
 746         break;
 747     default:
 748         c->yuvTable = NULL;
 749         av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);
 750         return -1;
 751     }
 752     return 0;
 753 }