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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, 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.         uint8_t *py_1 = src[0] + y*srcStride[0];\

  109.         uint8_t *py_2 = py_1 + srcStride[0];\

  110.         uint8_t *pu = src[1] + (y>>1)*srcStride[1];\

  111.         uint8_t *pv = src[2] + (y>>1)*srcStride[2];\

  112.         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. // This is exactly the same code as yuv2rgb_c_32 except for the types of

  325. // r, g, b, dst_1, dst_2

  326. YUV2RGBFUNC(yuv2rgb_c_8, uint8_t, 0)

  327.     LOADCHROMA(0);

  328.     PUTRGB(dst_1,py_1,0);

  329.     PUTRGB(dst_2,py_2,0);

  330. 

  331.     LOADCHROMA(1);

  332.     PUTRGB(dst_2,py_2,1);

  333.     PUTRGB(dst_1,py_1,1);

  334. 

  335.     LOADCHROMA(2);

  336.     PUTRGB(dst_1,py_1,2);

  337.     PUTRGB(dst_2,py_2,2);

  338. 

  339.     LOADCHROMA(3);

  340.     PUTRGB(dst_2,py_2,3);

  341.     PUTRGB(dst_1,py_1,3);

  342. CLOSEYUV2RGBFUNC(8)

  343. 

  344. // r, g, b, dst_1, dst_2

  345. YUV2RGBFUNC(yuv2rgb_c_8_ordered_dither, uint8_t, 0)

  346.     const uint8_t *d32 = dither_8x8_32[y&7];

  347.     const uint8_t *d64 = dither_8x8_73[y&7];

  348. #define PUTRGB8(dst,src,i,o)                                    \

  349.     Y = src[2*i];                                               \

  350.     dst[2*i]   = r[Y+d32[0+o]] + g[Y+d32[0+o]] + b[Y+d64[0+o]]; \

  351.     Y = src[2*i+1];                                             \

  352.     dst[2*i+1] = r[Y+d32[1+o]] + g[Y+d32[1+o]] + b[Y+d64[1+o]];

  353. 

  354.     LOADCHROMA(0);

  355.     PUTRGB8(dst_1,py_1,0,0);

  356.     PUTRGB8(dst_2,py_2,0,0+8);

  357. 

  358.     LOADCHROMA(1);

  359.     PUTRGB8(dst_2,py_2,1,2+8);

  360.     PUTRGB8(dst_1,py_1,1,2);

  361. 

  362.     LOADCHROMA(2);

  363.     PUTRGB8(dst_1,py_1,2,4);

  364.     PUTRGB8(dst_2,py_2,2,4+8);

  365. 

  366.     LOADCHROMA(3);

  367.     PUTRGB8(dst_2,py_2,3,6+8);

  368.     PUTRGB8(dst_1,py_1,3,6);

  369. CLOSEYUV2RGBFUNC(8)

  370. 

  371. 

  372. // This is exactly the same code as yuv2rgb_c_32 except for the types of

  373. // r, g, b, dst_1, dst_2

  374. YUV2RGBFUNC(yuv2rgb_c_4, uint8_t, 0)

  375.     int acc;

  376. #define PUTRGB4(dst,src,i)          \

  377.     Y = src[2*i];                   \

  378.     acc = r[Y] + g[Y] + b[Y];       \

  379.     Y = src[2*i+1];                 \

  380.     acc |= (r[Y] + g[Y] + b[Y])<<4; \

  381.     dst[i] = acc;

  382. 

  383.     LOADCHROMA(0);

  384.     PUTRGB4(dst_1,py_1,0);

  385.     PUTRGB4(dst_2,py_2,0);

  386. 

  387.     LOADCHROMA(1);

  388.     PUTRGB4(dst_2,py_2,1);

  389.     PUTRGB4(dst_1,py_1,1);

  390. 

  391.     LOADCHROMA(2);

  392.     PUTRGB4(dst_1,py_1,2);

  393.     PUTRGB4(dst_2,py_2,2);

  394. 

  395.     LOADCHROMA(3);

  396.     PUTRGB4(dst_2,py_2,3);

  397.     PUTRGB4(dst_1,py_1,3);

  398. CLOSEYUV2RGBFUNC(4)

  399. 

  400. YUV2RGBFUNC(yuv2rgb_c_4_ordered_dither, uint8_t, 0)

  401.     const uint8_t *d64 =  dither_8x8_73[y&7];

  402.     const uint8_t *d128 = dither_8x8_220[y&7];

  403.     int acc;

  404. 

  405. #define PUTRGB4D(dst,src,i,o)                                     \

  406.     Y = src[2*i];                                                 \

  407.     acc = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]];        \

  408.     Y = src[2*i+1];                                               \

  409.     acc |= (r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]])<<4;  \

  410.     dst[i]= acc;

  411. 

  412.     LOADCHROMA(0);

  413.     PUTRGB4D(dst_1,py_1,0,0);

  414.     PUTRGB4D(dst_2,py_2,0,0+8);

  415. 

  416.     LOADCHROMA(1);

  417.     PUTRGB4D(dst_2,py_2,1,2+8);

  418.     PUTRGB4D(dst_1,py_1,1,2);

  419. 

  420.     LOADCHROMA(2);

  421.     PUTRGB4D(dst_1,py_1,2,4);

  422.     PUTRGB4D(dst_2,py_2,2,4+8);

  423. 

  424.     LOADCHROMA(3);

  425.     PUTRGB4D(dst_2,py_2,3,6+8);

  426.     PUTRGB4D(dst_1,py_1,3,6);

  427. CLOSEYUV2RGBFUNC(4)

  428. 

  429. // This is exactly the same code as yuv2rgb_c_32 except for the types of

  430. // r, g, b, dst_1, dst_2

  431. YUV2RGBFUNC(yuv2rgb_c_4b, uint8_t, 0)

  432.     LOADCHROMA(0);

  433.     PUTRGB(dst_1,py_1,0);

  434.     PUTRGB(dst_2,py_2,0);

  435. 

  436.     LOADCHROMA(1);

  437.     PUTRGB(dst_2,py_2,1);

  438.     PUTRGB(dst_1,py_1,1);

  439. 

  440.     LOADCHROMA(2);

  441.     PUTRGB(dst_1,py_1,2);

  442.     PUTRGB(dst_2,py_2,2);

  443. 

  444.     LOADCHROMA(3);

  445.     PUTRGB(dst_2,py_2,3);

  446.     PUTRGB(dst_1,py_1,3);

  447. CLOSEYUV2RGBFUNC(8)

  448. 

  449. YUV2RGBFUNC(yuv2rgb_c_4b_ordered_dither, uint8_t, 0)

  450.     const uint8_t *d64 =  dither_8x8_73[y&7];

  451.     const uint8_t *d128 = dither_8x8_220[y&7];

  452. 

  453. #define PUTRGB4DB(dst,src,i,o)                                    \

  454.     Y = src[2*i];                                                 \

  455.     dst[2*i]   = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]]; \

  456.     Y = src[2*i+1];                                               \

  457.     dst[2*i+1] = r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]];

  458. 

  459.     LOADCHROMA(0);

  460.     PUTRGB4DB(dst_1,py_1,0,0);

  461.     PUTRGB4DB(dst_2,py_2,0,0+8);

  462. 

  463.     LOADCHROMA(1);

  464.     PUTRGB4DB(dst_2,py_2,1,2+8);

  465.     PUTRGB4DB(dst_1,py_1,1,2);

  466. 

  467.     LOADCHROMA(2);

  468.     PUTRGB4DB(dst_1,py_1,2,4);

  469.     PUTRGB4DB(dst_2,py_2,2,4+8);

  470. 

  471.     LOADCHROMA(3);

  472.     PUTRGB4DB(dst_2,py_2,3,6+8);

  473.     PUTRGB4DB(dst_1,py_1,3,6);

  474. CLOSEYUV2RGBFUNC(8)

  475. 

  476. YUV2RGBFUNC(yuv2rgb_c_1_ordered_dither, uint8_t, 0)

  477.         const uint8_t *d128 = dither_8x8_220[y&7];

  478.         char out_1 = 0, out_2 = 0;

  479.         g= c->table_gU[128] + c->table_gV[128];

  480. 

  481. #define PUTRGB1(out,src,i,o)    \

  482.     Y = src[2*i];               \

  483.     out+= out + g[Y+d128[0+o]]; \

  484.     Y = src[2*i+1];             \

  485.     out+= out + g[Y+d128[1+o]];

  486. 

  487.     PUTRGB1(out_1,py_1,0,0);

  488.     PUTRGB1(out_2,py_2,0,0+8);

  489. 

  490.     PUTRGB1(out_2,py_2,1,2+8);

  491.     PUTRGB1(out_1,py_1,1,2);

  492. 

  493.     PUTRGB1(out_1,py_1,2,4);

  494.     PUTRGB1(out_2,py_2,2,4+8);

  495. 

  496.     PUTRGB1(out_2,py_2,3,6+8);

  497.     PUTRGB1(out_1,py_1,3,6);

  498. 

  499.     dst_1[0]= out_1;

  500.     dst_2[0]= out_2;

  501. CLOSEYUV2RGBFUNC(1)

  502. 

  503. SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)

  504. {

  505.     SwsFunc t = NULL;

  506. #if (HAVE_MMX2 || HAVE_MMX) && CONFIG_GPL

  507.      t = ff_yuv2rgb_init_mmx(c);

  508. #endif

  509. #if HAVE_VIS

  510.     t = ff_yuv2rgb_init_vis(c);

  511. #endif

  512. #if CONFIG_MLIB

  513.     t = ff_yuv2rgb_init_mlib(c);

  514. #endif

  515. #if HAVE_ALTIVEC

  516.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  517.         t = ff_yuv2rgb_init_altivec(c);

  518. #endif

  519. 

  520. #if ARCH_BFIN

  521.     if (c->flags & SWS_CPU_CAPS_BFIN)

  522.         t = ff_yuv2rgb_get_func_ptr_bfin(c);

  523. #endif

  524. 

  525.     if (t)

  526.         return t;

  527. 

  528.     av_log(c, AV_LOG_WARNING, "No accelerated colorspace conversion found.\n");

  529. 

  530.     switch (c->dstFormat) {

  531.     case PIX_FMT_RGB48BE:

  532.     case PIX_FMT_RGB48LE:    return yuv2rgb_c_48;

  533.     case PIX_FMT_ARGB:

  534.     case PIX_FMT_ABGR:       if (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) return yuva2argb_c;

  535.     case PIX_FMT_RGBA:

  536.     case PIX_FMT_BGRA:       return (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) ? yuva2rgba_c : yuv2rgb_c_32;

  537.     case PIX_FMT_RGB24:      return yuv2rgb_c_24_rgb;

  538.     case PIX_FMT_BGR24:      return yuv2rgb_c_24_bgr;

  539.     case PIX_FMT_RGB565:

  540.     case PIX_FMT_BGR565:

  541.     case PIX_FMT_RGB555:

  542.     case PIX_FMT_BGR555:     return yuv2rgb_c_16;

  543.     case PIX_FMT_RGB8:

  544.     case PIX_FMT_BGR8:       return yuv2rgb_c_8_ordered_dither;

  545.     case PIX_FMT_RGB4:

  546.     case PIX_FMT_BGR4:       return yuv2rgb_c_4_ordered_dither;

  547.     case PIX_FMT_RGB4_BYTE:

  548.     case PIX_FMT_BGR4_BYTE:  return yuv2rgb_c_4b_ordered_dither;

  549.     case PIX_FMT_MONOBLACK:  return yuv2rgb_c_1_ordered_dither;

  550.     default:

  551.         assert(0);

  552.     }

  553.     return NULL;

  554. }

  555. 

  556. static void fill_table(uint8_t* table[256], const int elemsize, const int inc, uint8_t *y_table)

  557. {

  558.     int i;

  559.     int64_t cb = 0;

  560. 

  561.     y_table -= elemsize * (inc >> 9);

  562. 

  563.     for (i = 0; i < 256; i++) {

  564.         table[i] = y_table + elemsize * (cb >> 16);

  565.         cb += inc;

  566.     }

  567. }

  568. 

  569. static void fill_gv_table(int table[256], const int elemsize, const int inc)

  570. {

  571.     int i;

  572.     int64_t cb = 0;

  573.     int off = -(inc >> 9);

  574. 

  575.     for (i = 0; i < 256; i++) {

  576.         table[i] = elemsize * (off + (cb >> 16));

  577.         cb += inc;

  578.     }

  579. }

  580. 

  581. av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int fullRange,

  582.                                      int brightness, int contrast, int saturation)

  583. {

  584.     const int isRgb =      c->dstFormat==PIX_FMT_RGB32

  585.                         || c->dstFormat==PIX_FMT_RGB32_1

  586.                         || c->dstFormat==PIX_FMT_BGR24

  587.                         || c->dstFormat==PIX_FMT_RGB565

  588.                         || c->dstFormat==PIX_FMT_RGB555

  589.                         || c->dstFormat==PIX_FMT_RGB8

  590.                         || c->dstFormat==PIX_FMT_RGB4

  591.                         || c->dstFormat==PIX_FMT_RGB4_BYTE

  592.                         || c->dstFormat==PIX_FMT_MONOBLACK;

  593.     const int bpp = fmt_depth(c->dstFormat);

  594.     uint8_t *y_table;

  595.     uint16_t *y_table16;

  596.     uint32_t *y_table32;

  597.     int i, base, rbase, gbase, bbase, abase, needAlpha;

  598.     const int yoffs = fullRange ? 384 : 326;

  599. 

  600.     int64_t crv =  inv_table[0];

  601.     int64_t cbu =  inv_table[1];

  602.     int64_t cgu = -inv_table[2];

  603.     int64_t cgv = -inv_table[3];

  604.     int64_t cy  = 1<<16;

  605.     int64_t oy  = 0;

  606. 

  607.     int64_t yb = 0;

  608. 

  609.     if (!fullRange) {

  610.         cy = (cy*255) / 219;

  611.         oy = 16<<16;

  612.     } else {

  613.         crv = (crv*224) / 255;

  614.         cbu = (cbu*224) / 255;

  615.         cgu = (cgu*224) / 255;

  616.         cgv = (cgv*224) / 255;

  617.     }

  618. 

  619.     cy  = (cy *contrast             ) >> 16;

  620.     crv = (crv*contrast * saturation) >> 32;

  621.     cbu = (cbu*contrast * saturation) >> 32;

  622.     cgu = (cgu*contrast * saturation) >> 32;

  623.     cgv = (cgv*contrast * saturation) >> 32;

  624.     oy -= 256*brightness;

  625. 

  626.     //scale coefficients by cy

  627.     crv = ((crv << 16) + 0x8000) / cy;

  628.     cbu = ((cbu << 16) + 0x8000) / cy;

  629.     cgu = ((cgu << 16) + 0x8000) / cy;

  630.     cgv = ((cgv << 16) + 0x8000) / cy;

  631. 

  632.     av_free(c->yuvTable);

  633. 

  634.     switch (bpp) {

  635.     case 1:

  636.         c->yuvTable = av_malloc(1024);

  637.         y_table = c->yuvTable;

  638.         yb = -(384<<16) - oy;

  639.         for (i = 0; i < 1024-110; i++) {

  640.             y_table[i+110] = av_clip_uint8((yb + 0x8000) >> 16) >> 7;

  641.             yb += cy;

  642.         }

  643.         fill_table(c->table_gU, 1, cgu, y_table + yoffs);

  644.         fill_gv_table(c->table_gV, 1, cgv);

  645.         break;

  646.     case 4:

  647.     case 4|128:

  648.         rbase = isRgb ? 3 : 0;

  649.         gbase = 1;

  650.         bbase = isRgb ? 0 : 3;

  651.         c->yuvTable = av_malloc(1024*3);

  652.         y_table = c->yuvTable;

  653.         yb = -(384<<16) - oy;

  654.         for (i = 0; i < 1024-110; i++) {

  655.             int yval = av_clip_uint8((yb + 0x8000) >> 16);

  656.             y_table[i+110     ] =  (yval >> 7)       << rbase;

  657.             y_table[i+ 37+1024] = ((yval + 43) / 85) << gbase;

  658.             y_table[i+110+2048] =  (yval >> 7)       << bbase;

  659.             yb += cy;

  660.         }

  661.         fill_table(c->table_rV, 1, crv, y_table + yoffs);

  662.         fill_table(c->table_gU, 1, cgu, y_table + yoffs + 1024);

  663.         fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);

  664.         fill_gv_table(c->table_gV, 1, cgv);

  665.         break;

  666.     case 8:

  667.         rbase = isRgb ? 5 : 0;

  668.         gbase = isRgb ? 2 : 3;

  669.         bbase = isRgb ? 0 : 6;

  670.         c->yuvTable = av_malloc(1024*3);

  671.         y_table = c->yuvTable;

  672.         yb = -(384<<16) - oy;

  673.         for (i = 0; i < 1024-38; i++) {

  674.             int yval = av_clip_uint8((yb + 0x8000) >> 16);

  675.             y_table[i+16     ] = ((yval + 18) / 36) << rbase;

  676.             y_table[i+16+1024] = ((yval + 18) / 36) << gbase;

  677.             y_table[i+37+2048] = ((yval + 43) / 85) << bbase;

  678.             yb += cy;

  679.         }

  680.         fill_table(c->table_rV, 1, crv, y_table + yoffs);

  681.         fill_table(c->table_gU, 1, cgu, y_table + yoffs + 1024);

  682.         fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);

  683.         fill_gv_table(c->table_gV, 1, cgv);

  684.         break;

  685.     case 15:

  686.     case 16:

  687.         rbase = isRgb ? bpp - 5 : 0;

  688.         gbase = 5;

  689.         bbase = isRgb ? 0 : (bpp - 5);

  690.         c->yuvTable = av_malloc(1024*3*2);

  691.         y_table16 = c->yuvTable;

  692.         yb = -(384<<16) - oy;

  693.         for (i = 0; i < 1024; i++) {

  694.             uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);

  695.             y_table16[i     ] = (yval >> 3)          << rbase;

  696.             y_table16[i+1024] = (yval >> (18 - bpp)) << gbase;

  697.             y_table16[i+2048] = (yval >> 3)          << bbase;

  698.             yb += cy;

  699.         }

  700.         fill_table(c->table_rV, 2, crv, y_table16 + yoffs);

  701.         fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + 1024);

  702.         fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2048);

  703.         fill_gv_table(c->table_gV, 2, cgv);

  704.         break;

  705.     case 24:

  706.     case 48:

  707.         c->yuvTable = av_malloc(1024);

  708.         y_table = c->yuvTable;

  709.         yb = -(384<<16) - oy;

  710.         for (i = 0; i < 1024; i++) {

  711.             y_table[i] = av_clip_uint8((yb + 0x8000) >> 16);

  712.             yb += cy;

  713.         }

  714.         fill_table(c->table_rV, 1, crv, y_table + yoffs);

  715.         fill_table(c->table_gU, 1, cgu, y_table + yoffs);

  716.         fill_table(c->table_bU, 1, cbu, y_table + yoffs);

  717.         fill_gv_table(c->table_gV, 1, cgv);

  718.         break;

  719.     case 32:

  720.         base = (c->dstFormat == PIX_FMT_RGB32_1 || c->dstFormat == PIX_FMT_BGR32_1) ? 8 : 0;

  721.         rbase = base + (isRgb ? 16 : 0);

  722.         gbase = base + 8;

  723.         bbase = base + (isRgb ? 0 : 16);

  724.         needAlpha = CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat);

  725.         if (!needAlpha)

  726.             abase = (base + 24) & 31;

  727.         c->yuvTable = av_malloc(1024*3*4);

  728.         y_table32 = c->yuvTable;

  729.         yb = -(384<<16) - oy;

  730.         for (i = 0; i < 1024; i++) {

  731.             uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);

  732.             y_table32[i     ] = (yval << rbase) + (needAlpha ? 0 : (255 << abase));

  733.             y_table32[i+1024] = yval << gbase;

  734.             y_table32[i+2048] = yval << bbase;

  735.             yb += cy;

  736.         }

  737.         fill_table(c->table_rV, 4, crv, y_table32 + yoffs);

  738.         fill_table(c->table_gU, 4, cgu, y_table32 + yoffs + 1024);

  739.         fill_table(c->table_bU, 4, cbu, y_table32 + yoffs + 2048);

  740.         fill_gv_table(c->table_gV, 4, cgv);

  741.         break;

  742.     default:

  743.         c->yuvTable = NULL;

  744.         av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);

  745.         return -1;

  746.     }

  747.     return 0;

  748. }