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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,o)          \

  60.     Y = src[2*i+o];                  \

  61.     dst[2*i  ] = r[Y] + g[Y] + b[Y]; \

  62.     Y = src[2*i+1-o];                \

  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,o,s)                    \

  78.     Y = ysrc[2*i+o];                                    \

  79.     dst[2*i  ] = r[Y] + g[Y] + b[Y] + (asrc[2*i  ]<<s); \

  80.     Y = ysrc[2*i+1-o];                                  \

  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.     int y;\

  97. \

  98.     if (!alpha && c->srcFormat == PIX_FMT_YUV422P) {\

  99.         srcStride[1] *= 2;\

  100.         srcStride[2] *= 2;\

  101.     }\

  102.     for (y=0; y<srcSliceH; y+=2) {\

  103.         dst_type *dst_1 = (dst_type*)(dst[0] + (y+srcSliceY  )*dstStride[0]);\

  104.         dst_type *dst_2 = (dst_type*)(dst[0] + (y+srcSliceY+1)*dstStride[0]);\

  105.         dst_type av_unused *r, *b;\

  106.         dst_type *g;\

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

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

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

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

  111.         uint8_t av_unused *pa_1, *pa_2;\

  112.         unsigned int h_size = c->dstW>>3;\

  113.         if (alpha){\

  114.             pa_1 = src[3] + y*srcStride[3];\

  115.             pa_2 = pa_1 + srcStride[3];\

  116.         }\

  117.         while (h_size--) {\

  118.             int av_unused U, V;\

  119.             int Y;\

  120. 

  121. #define ENDYUV2RGBLINE(dst_delta)\

  122.             pu += 4;\

  123.             pv += 4;\

  124.             py_1 += 8;\

  125.             py_2 += 8;\

  126.             dst_1 += dst_delta;\

  127.             dst_2 += dst_delta;\

  128.         }\

  129.         if (c->dstW & 4) {\

  130.             int av_unused Y, U, V;\

  131. 

  132. #define ENDYUV2RGBFUNC()\

  133.         }\

  134.     }\

  135.     return srcSliceH;\

  136. }

  137. 

  138. #define CLOSEYUV2RGBFUNC(dst_delta)\

  139.     ENDYUV2RGBLINE(dst_delta)\

  140.     ENDYUV2RGBFUNC()

  141. 

  142. YUV2RGBFUNC(yuv2rgb_c_48, uint8_t, 0)

  143.     LOADCHROMA(0);

  144.     PUTRGB48(dst_1,py_1,0);

  145.     PUTRGB48(dst_2,py_2,0);

  146. 

  147.     LOADCHROMA(1);

  148.     PUTRGB48(dst_2,py_2,1);

  149.     PUTRGB48(dst_1,py_1,1);

  150. 

  151.     LOADCHROMA(2);

  152.     PUTRGB48(dst_1,py_1,2);

  153.     PUTRGB48(dst_2,py_2,2);

  154. 

  155.     LOADCHROMA(3);

  156.     PUTRGB48(dst_2,py_2,3);

  157.     PUTRGB48(dst_1,py_1,3);

  158. ENDYUV2RGBLINE(48)

  159.     LOADCHROMA(0);

  160.     PUTRGB48(dst_1,py_1,0);

  161.     PUTRGB48(dst_2,py_2,0);

  162. 

  163.     LOADCHROMA(1);

  164.     PUTRGB48(dst_2,py_2,1);

  165.     PUTRGB48(dst_1,py_1,1);

  166. ENDYUV2RGBFUNC()

  167. 

  168. YUV2RGBFUNC(yuv2rgb_c_32, uint32_t, 0)

  169.     LOADCHROMA(0);

  170.     PUTRGB(dst_1,py_1,0,0);

  171.     PUTRGB(dst_2,py_2,0,1);

  172. 

  173.     LOADCHROMA(1);

  174.     PUTRGB(dst_2,py_2,1,1);

  175.     PUTRGB(dst_1,py_1,1,0);

  176. 

  177.     LOADCHROMA(2);

  178.     PUTRGB(dst_1,py_1,2,0);

  179.     PUTRGB(dst_2,py_2,2,1);

  180. 

  181.     LOADCHROMA(3);

  182.     PUTRGB(dst_2,py_2,3,1);

  183.     PUTRGB(dst_1,py_1,3,0);

  184. ENDYUV2RGBLINE(8)

  185.     LOADCHROMA(0);

  186.     PUTRGB(dst_1,py_1,0,0);

  187.     PUTRGB(dst_2,py_2,0,1);

  188. 

  189.     LOADCHROMA(1);

  190.     PUTRGB(dst_2,py_2,1,1);

  191.     PUTRGB(dst_1,py_1,1,0);

  192. ENDYUV2RGBFUNC()

  193. 

  194. YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)

  195.     LOADCHROMA(0);

  196.     PUTRGBA(dst_1,py_1,pa_1,0,0,24);

  197.     PUTRGBA(dst_2,py_2,pa_2,0,1,24);

  198. 

  199.     LOADCHROMA(1);

  200.     PUTRGBA(dst_2,py_2,pa_1,1,1,24);

  201.     PUTRGBA(dst_1,py_1,pa_2,1,0,24);

  202. 

  203.     LOADCHROMA(2);

  204.     PUTRGBA(dst_1,py_1,pa_1,2,0,24);

  205.     PUTRGBA(dst_2,py_2,pa_2,2,1,24);

  206. 

  207.     LOADCHROMA(3);

  208.     PUTRGBA(dst_2,py_2,pa_1,3,1,24);

  209.     PUTRGBA(dst_1,py_1,pa_2,3,0,24);

  210.     pa_1 += 8;\

  211.     pa_2 += 8;\

  212. ENDYUV2RGBLINE(8)

  213.     LOADCHROMA(0);

  214.     PUTRGBA(dst_1,py_1,pa_1,0,0,24);

  215.     PUTRGBA(dst_2,py_2,pa_2,0,1,24);

  216. 

  217.     LOADCHROMA(1);

  218.     PUTRGBA(dst_2,py_2,pa_1,1,1,24);

  219.     PUTRGBA(dst_1,py_1,pa_2,1,0,24);

  220. ENDYUV2RGBFUNC()

  221. 

  222. YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)

  223.     LOADCHROMA(0);

  224.     PUTRGBA(dst_1,py_1,pa_1,0,0,0);

  225.     PUTRGBA(dst_2,py_2,pa_2,0,1,0);

  226. 

  227.     LOADCHROMA(1);

  228.     PUTRGBA(dst_2,py_2,pa_2,1,1,0);

  229.     PUTRGBA(dst_1,py_1,pa_1,1,0,0);

  230. 

  231.     LOADCHROMA(2);

  232.     PUTRGBA(dst_1,py_1,pa_1,2,0,0);

  233.     PUTRGBA(dst_2,py_2,pa_2,2,1,0);

  234. 

  235.     LOADCHROMA(3);

  236.     PUTRGBA(dst_2,py_2,pa_2,3,1,0);

  237.     PUTRGBA(dst_1,py_1,pa_1,3,0,0);

  238.     pa_1 += 8;\

  239.     pa_2 += 8;\

  240. ENDYUV2RGBLINE(8)

  241.     LOADCHROMA(0);

  242.     PUTRGBA(dst_1,py_1,pa_1,0,0,0);

  243.     PUTRGBA(dst_2,py_2,pa_2,0,1,0);

  244. 

  245.     LOADCHROMA(1);

  246.     PUTRGBA(dst_2,py_2,pa_2,1,1,0);

  247.     PUTRGBA(dst_1,py_1,pa_1,1,0,0);

  248. ENDYUV2RGBFUNC()

  249. 

  250. YUV2RGBFUNC(yuv2rgb_c_24_rgb, uint8_t, 0)

  251.     LOADCHROMA(0);

  252.     PUTRGB24(dst_1,py_1,0);

  253.     PUTRGB24(dst_2,py_2,0);

  254. 

  255.     LOADCHROMA(1);

  256.     PUTRGB24(dst_2,py_2,1);

  257.     PUTRGB24(dst_1,py_1,1);

  258. 

  259.     LOADCHROMA(2);

  260.     PUTRGB24(dst_1,py_1,2);

  261.     PUTRGB24(dst_2,py_2,2);

  262. 

  263.     LOADCHROMA(3);

  264.     PUTRGB24(dst_2,py_2,3);

  265.     PUTRGB24(dst_1,py_1,3);

  266. ENDYUV2RGBLINE(24)

  267.     LOADCHROMA(0);

  268.     PUTRGB24(dst_1,py_1,0);

  269.     PUTRGB24(dst_2,py_2,0);

  270. 

  271.     LOADCHROMA(1);

  272.     PUTRGB24(dst_2,py_2,1);

  273.     PUTRGB24(dst_1,py_1,1);

  274. ENDYUV2RGBFUNC()

  275. 

  276. // only trivial mods from yuv2rgb_c_24_rgb

  277. YUV2RGBFUNC(yuv2rgb_c_24_bgr, uint8_t, 0)

  278.     LOADCHROMA(0);

  279.     PUTBGR24(dst_1,py_1,0);

  280.     PUTBGR24(dst_2,py_2,0);

  281. 

  282.     LOADCHROMA(1);

  283.     PUTBGR24(dst_2,py_2,1);

  284.     PUTBGR24(dst_1,py_1,1);

  285. 

  286.     LOADCHROMA(2);

  287.     PUTBGR24(dst_1,py_1,2);

  288.     PUTBGR24(dst_2,py_2,2);

  289. 

  290.     LOADCHROMA(3);

  291.     PUTBGR24(dst_2,py_2,3);

  292.     PUTBGR24(dst_1,py_1,3);

  293. ENDYUV2RGBLINE(24)

  294.     LOADCHROMA(0);

  295.     PUTBGR24(dst_1,py_1,0);

  296.     PUTBGR24(dst_2,py_2,0);

  297. 

  298.     LOADCHROMA(1);

  299.     PUTBGR24(dst_2,py_2,1);

  300.     PUTBGR24(dst_1,py_1,1);

  301. ENDYUV2RGBFUNC()

  302. 

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

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

  305. YUV2RGBFUNC(yuv2rgb_c_16, uint16_t, 0)

  306.     LOADCHROMA(0);

  307.     PUTRGB(dst_1,py_1,0,0);

  308.     PUTRGB(dst_2,py_2,0,1);

  309. 

  310.     LOADCHROMA(1);

  311.     PUTRGB(dst_2,py_2,1,1);

  312.     PUTRGB(dst_1,py_1,1,0);

  313. 

  314.     LOADCHROMA(2);

  315.     PUTRGB(dst_1,py_1,2,0);

  316.     PUTRGB(dst_2,py_2,2,1);

  317. 

  318.     LOADCHROMA(3);

  319.     PUTRGB(dst_2,py_2,3,1);

  320.     PUTRGB(dst_1,py_1,3,0);

  321. CLOSEYUV2RGBFUNC(8)

  322. 

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

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

  325. YUV2RGBFUNC(yuv2rgb_c_8, uint8_t, 0)

  326.     LOADCHROMA(0);

  327.     PUTRGB(dst_1,py_1,0,0);

  328.     PUTRGB(dst_2,py_2,0,1);

  329. 

  330.     LOADCHROMA(1);

  331.     PUTRGB(dst_2,py_2,1,1);

  332.     PUTRGB(dst_1,py_1,1,0);

  333. 

  334.     LOADCHROMA(2);

  335.     PUTRGB(dst_1,py_1,2,0);

  336.     PUTRGB(dst_2,py_2,2,1);

  337. 

  338.     LOADCHROMA(3);

  339.     PUTRGB(dst_2,py_2,3,1);

  340.     PUTRGB(dst_1,py_1,3,0);

  341. CLOSEYUV2RGBFUNC(8)

  342. 

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

  344. YUV2RGBFUNC(yuv2rgb_c_8_ordered_dither, uint8_t, 0)

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

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

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

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

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

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

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

  352. 

  353.     LOADCHROMA(0);

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

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

  356. 

  357.     LOADCHROMA(1);

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

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

  360. 

  361.     LOADCHROMA(2);

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

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

  364. 

  365.     LOADCHROMA(3);

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

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

  368. CLOSEYUV2RGBFUNC(8)

  369. 

  370. 

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

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

  373. YUV2RGBFUNC(yuv2rgb_c_4, uint8_t, 0)

  374.     int acc;

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

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

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

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

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

  380.     dst[i] = acc;

  381. 

  382.     LOADCHROMA(0);

  383.     PUTRGB4(dst_1,py_1,0);

  384.     PUTRGB4(dst_2,py_2,0);

  385. 

  386.     LOADCHROMA(1);

  387.     PUTRGB4(dst_2,py_2,1);

  388.     PUTRGB4(dst_1,py_1,1);

  389. 

  390.     LOADCHROMA(2);

  391.     PUTRGB4(dst_1,py_1,2);

  392.     PUTRGB4(dst_2,py_2,2);

  393. 

  394.     LOADCHROMA(3);

  395.     PUTRGB4(dst_2,py_2,3);

  396.     PUTRGB4(dst_1,py_1,3);

  397. CLOSEYUV2RGBFUNC(4)

  398. 

  399. YUV2RGBFUNC(yuv2rgb_c_4_ordered_dither, uint8_t, 0)

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

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

  402.     int acc;

  403. 

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

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

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

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

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

  409.     dst[i]= acc;

  410. 

  411.     LOADCHROMA(0);

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

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

  414. 

  415.     LOADCHROMA(1);

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

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

  418. 

  419.     LOADCHROMA(2);

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

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

  422. 

  423.     LOADCHROMA(3);

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

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

  426. CLOSEYUV2RGBFUNC(4)

  427. 

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

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

  430. YUV2RGBFUNC(yuv2rgb_c_4b, uint8_t, 0)

  431.     LOADCHROMA(0);

  432.     PUTRGB(dst_1,py_1,0,0);

  433.     PUTRGB(dst_2,py_2,0,1);

  434. 

  435.     LOADCHROMA(1);

  436.     PUTRGB(dst_2,py_2,1,1);

  437.     PUTRGB(dst_1,py_1,1,0);

  438. 

  439.     LOADCHROMA(2);

  440.     PUTRGB(dst_1,py_1,2,0);

  441.     PUTRGB(dst_2,py_2,2,1);

  442. 

  443.     LOADCHROMA(3);

  444.     PUTRGB(dst_2,py_2,3,1);

  445.     PUTRGB(dst_1,py_1,3,0);

  446. CLOSEYUV2RGBFUNC(8)

  447. 

  448. YUV2RGBFUNC(yuv2rgb_c_4b_ordered_dither, uint8_t, 0)

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

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

  451. 

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

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

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

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

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

  457. 

  458.     LOADCHROMA(0);

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

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

  461. 

  462.     LOADCHROMA(1);

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

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

  465. 

  466.     LOADCHROMA(2);

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

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

  469. 

  470.     LOADCHROMA(3);

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

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

  473. CLOSEYUV2RGBFUNC(8)

  474. 

  475. YUV2RGBFUNC(yuv2rgb_c_1_ordered_dither, uint8_t, 0)

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

  477.         char out_1 = 0, out_2 = 0;

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

  479. 

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

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

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

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

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

  485. 

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

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

  488. 

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

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

  491. 

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

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

  494. 

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

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

  497. 

  498.     dst_1[0]= out_1;

  499.     dst_2[0]= out_2;

  500. CLOSEYUV2RGBFUNC(1)

  501. 

  502. SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)

  503. {

  504.     SwsFunc t = NULL;

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

  506.      t = ff_yuv2rgb_init_mmx(c);

  507. #endif

  508. #if HAVE_VIS

  509.     t = ff_yuv2rgb_init_vis(c);

  510. #endif

  511. #if CONFIG_MLIB

  512.     t = ff_yuv2rgb_init_mlib(c);

  513. #endif

  514. #if HAVE_ALTIVEC && CONFIG_GPL

  515.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  516.         t = ff_yuv2rgb_init_altivec(c);

  517. #endif

  518. 

  519. #if ARCH_BFIN

  520.     if (c->flags & SWS_CPU_CAPS_BFIN)

  521.         t = ff_yuv2rgb_get_func_ptr_bfin(c);

  522. #endif

  523. 

  524.     if (t)

  525.         return t;

  526. 

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

  528. 

  529.     switch (c->dstFormat) {

  530.     case PIX_FMT_RGB48BE:

  531.     case PIX_FMT_RGB48LE:    return yuv2rgb_c_48;

  532.     case PIX_FMT_ARGB:

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

  534.     case PIX_FMT_RGBA:

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

  536.     case PIX_FMT_RGB24:      return yuv2rgb_c_24_rgb;

  537.     case PIX_FMT_BGR24:      return yuv2rgb_c_24_bgr;

  538.     case PIX_FMT_RGB565:

  539.     case PIX_FMT_BGR565:

  540.     case PIX_FMT_RGB555:

  541.     case PIX_FMT_BGR555:     return yuv2rgb_c_16;

  542.     case PIX_FMT_RGB8:

  543.     case PIX_FMT_BGR8:       return yuv2rgb_c_8_ordered_dither;

  544.     case PIX_FMT_RGB4:

  545.     case PIX_FMT_BGR4:       return yuv2rgb_c_4_ordered_dither;

  546.     case PIX_FMT_RGB4_BYTE:

  547.     case PIX_FMT_BGR4_BYTE:  return yuv2rgb_c_4b_ordered_dither;

  548.     case PIX_FMT_MONOBLACK:  return yuv2rgb_c_1_ordered_dither;

  549.     default:

  550.         assert(0);

  551.     }

  552.     return NULL;

  553. }

  554. 

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

  556. {

  557.     int i;

  558.     int64_t cb = 0;

  559. 

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

  561. 

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

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

  564.         cb += inc;

  565.     }

  566. }

  567. 

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

  569. {

  570.     int i;

  571.     int64_t cb = 0;

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

  573. 

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

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

  576.         cb += inc;

  577.     }

  578. }

  579. 

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

  581.                                      int brightness, int contrast, int saturation)

  582. {

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

  584.                         || c->dstFormat==PIX_FMT_RGB32_1

  585.                         || c->dstFormat==PIX_FMT_BGR24

  586.                         || c->dstFormat==PIX_FMT_RGB565

  587.                         || c->dstFormat==PIX_FMT_RGB555

  588.                         || c->dstFormat==PIX_FMT_RGB8

  589.                         || c->dstFormat==PIX_FMT_RGB4

  590.                         || c->dstFormat==PIX_FMT_RGB4_BYTE

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

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

  593.     uint8_t *y_table;

  594.     uint16_t *y_table16;

  595.     uint32_t *y_table32;

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

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

  598. 

  599.     int64_t crv =  inv_table[0];

  600.     int64_t cbu =  inv_table[1];

  601.     int64_t cgu = -inv_table[2];

  602.     int64_t cgv = -inv_table[3];

  603.     int64_t cy  = 1<<16;

  604.     int64_t oy  = 0;

  605. 

  606.     int64_t yb = 0;

  607. 

  608.     if (!fullRange) {

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

  610.         oy = 16<<16;

  611.     } else {

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

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

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

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

  616.     }

  617. 

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

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

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

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

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

  623.     oy -= 256*brightness;

  624. 

  625.     //scale coefficients by cy

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

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

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

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

  630. 

  631.     av_free(c->yuvTable);

  632. 

  633.     switch (bpp) {

  634.     case 1:

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

  636.         y_table = c->yuvTable;

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

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

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

  640.             yb += cy;

  641.         }

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

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

  644.         break;

  645.     case 4:

  646.     case 4|128:

  647.         rbase = isRgb ? 3 : 0;

  648.         gbase = 1;

  649.         bbase = isRgb ? 0 : 3;

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

  651.         y_table = c->yuvTable;

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

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

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

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

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

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

  658.             yb += cy;

  659.         }

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

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

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

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

  664.         break;

  665.     case 8:

  666.         rbase = isRgb ? 5 : 0;

  667.         gbase = isRgb ? 2 : 3;

  668.         bbase = isRgb ? 0 : 6;

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

  670.         y_table = c->yuvTable;

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

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

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

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

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

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

  677.             yb += cy;

  678.         }

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

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

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

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

  683.         break;

  684.     case 15:

  685.     case 16:

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

  687.         gbase = 5;

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

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

  690.         y_table16 = c->yuvTable;

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

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

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

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

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

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

  697.             yb += cy;

  698.         }

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

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

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

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

  703.         break;

  704.     case 24:

  705.     case 48:

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

  707.         y_table = c->yuvTable;

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

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

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

  711.             yb += cy;

  712.         }

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

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

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

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

  717.         break;

  718.     case 32:

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

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

  721.         gbase = base + 8;

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

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

  724.         if (!needAlpha)

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

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

  727.         y_table32 = c->yuvTable;

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

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

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

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

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

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

  734.             yb += cy;

  735.         }

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

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

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

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

  740.         break;

  741.     default:

  742.         c->yuvTable = NULL;

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

  744.         return -1;

  745.     }

  746.     return 0;

  747. }