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FFmpeg/libswscale/yuv2rgb.c

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  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 = fmt_depth(c->dstFormat);

  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. }