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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. 

  30. #include "libavutil/cpu.h"

  31. #include "libavutil/bswap.h"

  32. #include "config.h"

  33. #include "rgb2rgb.h"

  34. #include "swscale.h"

  35. #include "swscale_internal.h"

  36. #include "libavutil/pixdesc.h"

  37. 

  38. /* Color space conversion coefficients for YCbCr -> RGB mapping.

  39.  *

  40.  * Entries are {crv, cbu, cgu, cgv}

  41.  *

  42.  *   crv = (255 / 224) * 65536 * (1 - cr) / 0.5

  43.  *   cbu = (255 / 224) * 65536 * (1 - cb) / 0.5

  44.  *   cgu = (255 / 224) * 65536 * (cb / cg) * (1 - cb) / 0.5

  45.  *   cgv = (255 / 224) * 65536 * (cr / cg) * (1 - cr) / 0.5

  46.  *

  47.  * where Y = cr * R + cg * G + cb * B and cr + cg + cb = 1.

  48.  */

  49. const int32_t ff_yuv2rgb_coeffs[11][4] = {

  50.     { 117489, 138438, 13975, 34925 }, /* no sequence_display_extension */

  51.     { 117489, 138438, 13975, 34925 }, /* ITU-R Rec. 709 (1990) */

  52.     { 104597, 132201, 25675, 53279 }, /* unspecified */

  53.     { 104597, 132201, 25675, 53279 }, /* reserved */

  54.     { 104448, 132798, 24759, 53109 }, /* FCC */

  55.     { 104597, 132201, 25675, 53279 }, /* ITU-R Rec. 624-4 System B, G */

  56.     { 104597, 132201, 25675, 53279 }, /* SMPTE 170M */

  57.     { 117579, 136230, 16907, 35559 }, /* SMPTE 240M (1987) */

  58.     {      0                       }, /* YCgCo */

  59.     { 110013, 140363, 12277, 42626 }, /* Bt-2020-NCL */

  60.     { 110013, 140363, 12277, 42626 }, /* Bt-2020-CL */

  61. };

  62. 

  63. const int *sws_getCoefficients(int colorspace)

  64. {

  65.     if (colorspace > 10 || colorspace < 0 || colorspace == 8)

  66.         colorspace = SWS_CS_DEFAULT;

  67.     return ff_yuv2rgb_coeffs[colorspace];

  68. }

  69. 

  70. #define LOADCHROMA(i)                               \

  71.     U = pu[i];                                      \

  72.     V = pv[i];                                      \

  73.     r = (void *)c->table_rV[V+YUVRGB_TABLE_HEADROOM];                     \

  74.     g = (void *)(c->table_gU[U+YUVRGB_TABLE_HEADROOM] + c->table_gV[V+YUVRGB_TABLE_HEADROOM]);  \

  75.     b = (void *)c->table_bU[U+YUVRGB_TABLE_HEADROOM];

  76. 

  77. #define PUTRGB(dst, src, i)                         \

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

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

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

  81.     dst[2 * i + 1] = r[Y] + g[Y] + b[Y];

  82. 

  83. #define PUTRGB24(dst, src, i)                       \

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

  85.     dst[6 * i + 0] = r[Y];                          \

  86.     dst[6 * i + 1] = g[Y];                          \

  87.     dst[6 * i + 2] = b[Y];                          \

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

  89.     dst[6 * i + 3] = r[Y];                          \

  90.     dst[6 * i + 4] = g[Y];                          \

  91.     dst[6 * i + 5] = b[Y];

  92. 

  93. #define PUTBGR24(dst, src, i)                       \

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

  95.     dst[6 * i + 0] = b[Y];                          \

  96.     dst[6 * i + 1] = g[Y];                          \

  97.     dst[6 * i + 2] = r[Y];                          \

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

  99.     dst[6 * i + 3] = b[Y];                          \

  100.     dst[6 * i + 4] = g[Y];                          \

  101.     dst[6 * i + 5] = r[Y];

  102. 

  103. #define PUTRGBA(dst, ysrc, asrc, i, s)                                  \

  104.     Y              = ysrc[2 * i];                                       \

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

  106.     Y              = ysrc[2 * i + 1];                                   \

  107.     dst[2 * i + 1] = r[Y] + g[Y] + b[Y] + (asrc[2 * i + 1] << s);

  108. 

  109. #define PUTRGB48(dst, src, i)                       \

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

  111.     dst[12 * i +  0] = dst[12 * i +  1] = r[Y];     \

  112.     dst[12 * i +  2] = dst[12 * i +  3] = g[Y];     \

  113.     dst[12 * i +  4] = dst[12 * i +  5] = b[Y];     \

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

  115.     dst[12 * i +  6] = dst[12 * i +  7] = r[Y];     \

  116.     dst[12 * i +  8] = dst[12 * i +  9] = g[Y];     \

  117.     dst[12 * i + 10] = dst[12 * i + 11] = b[Y];

  118. 

  119. #define PUTBGR48(dst, src, i)                       \

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

  121.     dst[12 * i +  0] = dst[12 * i +  1] = b[Y];     \

  122.     dst[12 * i +  2] = dst[12 * i +  3] = g[Y];     \

  123.     dst[12 * i +  4] = dst[12 * i +  5] = r[Y];     \

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

  125.     dst[12 * i +  6] = dst[12 * i +  7] = b[Y];     \

  126.     dst[12 * i +  8] = dst[12 * i +  9] = g[Y];     \

  127.     dst[12 * i + 10] = dst[12 * i + 11] = r[Y];

  128. 

  129. #define YUV2RGBFUNC(func_name, dst_type, alpha)                             \

  130.     static int func_name(SwsContext *c, const uint8_t *src[],               \

  131.                          int srcStride[], int srcSliceY, int srcSliceH,     \

  132.                          uint8_t *dst[], int dstStride[])                   \

  133.     {                                                                       \

  134.         int y;                                                              \

  135.                                                                             \

  136.         if (!alpha && c->srcFormat == AV_PIX_FMT_YUV422P) {                    \

  137.             srcStride[1] *= 2;                                              \

  138.             srcStride[2] *= 2;                                              \

  139.         }                                                                   \

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

  141.             dst_type *dst_1 =                                               \

  142.                 (dst_type *)(dst[0] + (y + srcSliceY)     * dstStride[0]);  \

  143.             dst_type *dst_2 =                                               \

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

  145.             dst_type av_unused *r, *g, *b;                                  \

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

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

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

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

  150.             const uint8_t av_unused *pa_1, *pa_2;                           \

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

  152.             if (alpha) {                                                    \

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

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

  155.             }                                                               \

  156.             while (h_size--) {                                              \

  157.                 int av_unused U, V, Y;                                      \

  158. 

  159. #define ENDYUV2RGBLINE(dst_delta, ss)               \

  160.     pu    += 4 >> ss;                               \

  161.     pv    += 4 >> ss;                               \

  162.     py_1  += 8 >> ss;                               \

  163.     py_2  += 8 >> ss;                               \

  164.     dst_1 += dst_delta >> ss;                       \

  165.     dst_2 += dst_delta >> ss;                       \

  166.     }                                               \

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

  168.         int av_unused Y, U, V;                      \

  169. 

  170. #define ENDYUV2RGBFUNC()                            \

  171.             }                                       \

  172.         }                                           \

  173.         return srcSliceH;                           \

  174.     }

  175. 

  176. #define CLOSEYUV2RGBFUNC(dst_delta)                 \

  177.     ENDYUV2RGBLINE(dst_delta, 0)                    \

  178.     ENDYUV2RGBFUNC()

  179. 

  180. YUV2RGBFUNC(yuv2rgb_c_48, uint8_t, 0)

  181.     LOADCHROMA(0);

  182.     PUTRGB48(dst_1, py_1, 0);

  183.     PUTRGB48(dst_2, py_2, 0);

  184. 

  185.     LOADCHROMA(1);

  186.     PUTRGB48(dst_2, py_2, 1);

  187.     PUTRGB48(dst_1, py_1, 1);

  188. 

  189.     LOADCHROMA(2);

  190.     PUTRGB48(dst_1, py_1, 2);

  191.     PUTRGB48(dst_2, py_2, 2);

  192. 

  193.     LOADCHROMA(3);

  194.     PUTRGB48(dst_2, py_2, 3);

  195.     PUTRGB48(dst_1, py_1, 3);

  196. ENDYUV2RGBLINE(48, 0)

  197.     LOADCHROMA(0);

  198.     PUTRGB48(dst_1, py_1, 0);

  199.     PUTRGB48(dst_2, py_2, 0);

  200. 

  201.     LOADCHROMA(1);

  202.     PUTRGB48(dst_2, py_2, 1);

  203.     PUTRGB48(dst_1, py_1, 1);

  204. ENDYUV2RGBLINE(48, 1)

  205.     LOADCHROMA(0);

  206.     PUTRGB48(dst_1, py_1, 0);

  207.     PUTRGB48(dst_2, py_2, 0);

  208. ENDYUV2RGBFUNC()

  209. 

  210. YUV2RGBFUNC(yuv2rgb_c_bgr48, uint8_t, 0)

  211.     LOADCHROMA(0);

  212.     PUTBGR48(dst_1, py_1, 0);

  213.     PUTBGR48(dst_2, py_2, 0);

  214. 

  215.     LOADCHROMA(1);

  216.     PUTBGR48(dst_2, py_2, 1);

  217.     PUTBGR48(dst_1, py_1, 1);

  218. 

  219.     LOADCHROMA(2);

  220.     PUTBGR48(dst_1, py_1, 2);

  221.     PUTBGR48(dst_2, py_2, 2);

  222. 

  223.     LOADCHROMA(3);

  224.     PUTBGR48(dst_2, py_2, 3);

  225.     PUTBGR48(dst_1, py_1, 3);

  226. ENDYUV2RGBLINE(48, 0)

  227.     LOADCHROMA(0);

  228.     PUTBGR48(dst_1, py_1, 0);

  229.     PUTBGR48(dst_2, py_2, 0);

  230. 

  231.     LOADCHROMA(1);

  232.     PUTBGR48(dst_2, py_2, 1);

  233.     PUTBGR48(dst_1, py_1, 1);

  234. ENDYUV2RGBLINE(48, 1)

  235.     LOADCHROMA(0);

  236.     PUTBGR48(dst_1, py_1, 0);

  237.     PUTBGR48(dst_2, py_2, 0);

  238. ENDYUV2RGBFUNC()

  239. 

  240. YUV2RGBFUNC(yuv2rgb_c_32, uint32_t, 0)

  241.     LOADCHROMA(0);

  242.     PUTRGB(dst_1, py_1, 0);

  243.     PUTRGB(dst_2, py_2, 0);

  244. 

  245.     LOADCHROMA(1);

  246.     PUTRGB(dst_2, py_2, 1);

  247.     PUTRGB(dst_1, py_1, 1);

  248. 

  249.     LOADCHROMA(2);

  250.     PUTRGB(dst_1, py_1, 2);

  251.     PUTRGB(dst_2, py_2, 2);

  252. 

  253.     LOADCHROMA(3);

  254.     PUTRGB(dst_2, py_2, 3);

  255.     PUTRGB(dst_1, py_1, 3);

  256. ENDYUV2RGBLINE(8, 0)

  257.     LOADCHROMA(0);

  258.     PUTRGB(dst_1, py_1, 0);

  259.     PUTRGB(dst_2, py_2, 0);

  260. 

  261.     LOADCHROMA(1);

  262.     PUTRGB(dst_2, py_2, 1);

  263.     PUTRGB(dst_1, py_1, 1);

  264. ENDYUV2RGBLINE(8, 1)

  265.     LOADCHROMA(0);

  266.     PUTRGB(dst_1, py_1, 0);

  267.     PUTRGB(dst_2, py_2, 0);

  268. ENDYUV2RGBFUNC()

  269. 

  270. #if HAVE_BIGENDIAN

  271. YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)

  272. #else

  273. YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)

  274. #endif

  275.     LOADCHROMA(0);

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

  277.     PUTRGBA(dst_2, py_2, pa_2, 0, 24);

  278. 

  279.     LOADCHROMA(1);

  280.     PUTRGBA(dst_2, py_2, pa_2, 1, 24);

  281.     PUTRGBA(dst_1, py_1, pa_1, 1, 24);

  282. 

  283.     LOADCHROMA(2);

  284.     PUTRGBA(dst_1, py_1, pa_1, 2, 24);

  285.     PUTRGBA(dst_2, py_2, pa_2, 2, 24);

  286. 

  287.     LOADCHROMA(3);

  288.     PUTRGBA(dst_2, py_2, pa_2, 3, 24);

  289.     PUTRGBA(dst_1, py_1, pa_1, 3, 24);

  290.     pa_1 += 8;

  291.     pa_2 += 8;

  292. ENDYUV2RGBLINE(8, 0)

  293.     LOADCHROMA(0);

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

  295.     PUTRGBA(dst_2, py_2, pa_2, 0, 24);

  296. 

  297.     LOADCHROMA(1);

  298.     PUTRGBA(dst_2, py_2, pa_2, 1, 24);

  299.     PUTRGBA(dst_1, py_1, pa_1, 1, 24);

  300.     pa_1 += 4;

  301.     pa_2 += 4;

  302. ENDYUV2RGBLINE(8, 1)

  303.     LOADCHROMA(0);

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

  305.     PUTRGBA(dst_2, py_2, pa_2, 0, 24);

  306. ENDYUV2RGBFUNC()

  307. 

  308. #if HAVE_BIGENDIAN

  309. YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)

  310. #else

  311. YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)

  312. #endif

  313.     LOADCHROMA(0);

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

  315.     PUTRGBA(dst_2, py_2, pa_2, 0, 0);

  316. 

  317.     LOADCHROMA(1);

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

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

  320. 

  321.     LOADCHROMA(2);

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

  323.     PUTRGBA(dst_2, py_2, pa_2, 2, 0);

  324. 

  325.     LOADCHROMA(3);

  326.     PUTRGBA(dst_2, py_2, pa_2, 3, 0);

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

  328.     pa_1 += 8;

  329.     pa_2 += 8;

  330. ENDYUV2RGBLINE(8, 0)

  331.     LOADCHROMA(0);

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

  333.     PUTRGBA(dst_2, py_2, pa_2, 0, 0);

  334. 

  335.     LOADCHROMA(1);

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

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

  338.     pa_1 += 4;

  339.     pa_2 += 4;

  340. ENDYUV2RGBLINE(8, 1)

  341.     LOADCHROMA(0);

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

  343.     PUTRGBA(dst_2, py_2, pa_2, 0, 0);

  344. ENDYUV2RGBFUNC()

  345. 

  346. YUV2RGBFUNC(yuv2rgb_c_24_rgb, uint8_t, 0)

  347.     LOADCHROMA(0);

  348.     PUTRGB24(dst_1, py_1, 0);

  349.     PUTRGB24(dst_2, py_2, 0);

  350. 

  351.     LOADCHROMA(1);

  352.     PUTRGB24(dst_2, py_2, 1);

  353.     PUTRGB24(dst_1, py_1, 1);

  354. 

  355.     LOADCHROMA(2);

  356.     PUTRGB24(dst_1, py_1, 2);

  357.     PUTRGB24(dst_2, py_2, 2);

  358. 

  359.     LOADCHROMA(3);

  360.     PUTRGB24(dst_2, py_2, 3);

  361.     PUTRGB24(dst_1, py_1, 3);

  362. ENDYUV2RGBLINE(24, 0)

  363.     LOADCHROMA(0);

  364.     PUTRGB24(dst_1, py_1, 0);

  365.     PUTRGB24(dst_2, py_2, 0);

  366. 

  367.     LOADCHROMA(1);

  368.     PUTRGB24(dst_2, py_2, 1);

  369.     PUTRGB24(dst_1, py_1, 1);

  370. ENDYUV2RGBLINE(24, 1)

  371.     LOADCHROMA(0);

  372.     PUTRGB24(dst_1, py_1, 0);

  373.     PUTRGB24(dst_2, py_2, 0);

  374. ENDYUV2RGBFUNC()

  375. 

  376. // only trivial mods from yuv2rgb_c_24_rgb

  377. YUV2RGBFUNC(yuv2rgb_c_24_bgr, uint8_t, 0)

  378.     LOADCHROMA(0);

  379.     PUTBGR24(dst_1, py_1, 0);

  380.     PUTBGR24(dst_2, py_2, 0);

  381. 

  382.     LOADCHROMA(1);

  383.     PUTBGR24(dst_2, py_2, 1);

  384.     PUTBGR24(dst_1, py_1, 1);

  385. 

  386.     LOADCHROMA(2);

  387.     PUTBGR24(dst_1, py_1, 2);

  388.     PUTBGR24(dst_2, py_2, 2);

  389. 

  390.     LOADCHROMA(3);

  391.     PUTBGR24(dst_2, py_2, 3);

  392.     PUTBGR24(dst_1, py_1, 3);

  393. ENDYUV2RGBLINE(24, 0)

  394.     LOADCHROMA(0);

  395.     PUTBGR24(dst_1, py_1, 0);

  396.     PUTBGR24(dst_2, py_2, 0);

  397. 

  398.     LOADCHROMA(1);

  399.     PUTBGR24(dst_2, py_2, 1);

  400.     PUTBGR24(dst_1, py_1, 1);

  401. ENDYUV2RGBLINE(24, 1)

  402.     LOADCHROMA(0);

  403.     PUTBGR24(dst_1, py_1, 0);

  404.     PUTBGR24(dst_2, py_2, 0);

  405. ENDYUV2RGBFUNC()

  406. 

  407. YUV2RGBFUNC(yuv2rgb_c_16_ordered_dither, uint16_t, 0)

  408.     const uint8_t *d16 = ff_dither_2x2_8[y & 1];

  409.     const uint8_t *e16 = ff_dither_2x2_4[y & 1];

  410.     const uint8_t *f16 = ff_dither_2x2_8[(y & 1)^1];

  411. 

  412. #define PUTRGB16(dst, src, i, o)                    \

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

  414.     dst[2 * i]     = r[Y + d16[0 + o]] +            \

  415.                      g[Y + e16[0 + o]] +            \

  416.                      b[Y + f16[0 + o]];             \

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

  418.     dst[2 * i + 1] = r[Y + d16[1 + o]] +            \

  419.                      g[Y + e16[1 + o]] +            \

  420.                      b[Y + f16[1 + o]];

  421.     LOADCHROMA(0);

  422.     PUTRGB16(dst_1, py_1, 0, 0);

  423.     PUTRGB16(dst_2, py_2, 0, 0 + 8);

  424. 

  425.     LOADCHROMA(1);

  426.     PUTRGB16(dst_2, py_2, 1, 2 + 8);

  427.     PUTRGB16(dst_1, py_1, 1, 2);

  428. 

  429.     LOADCHROMA(2);

  430.     PUTRGB16(dst_1, py_1, 2, 4);

  431.     PUTRGB16(dst_2, py_2, 2, 4 + 8);

  432. 

  433.     LOADCHROMA(3);

  434.     PUTRGB16(dst_2, py_2, 3, 6 + 8);

  435.     PUTRGB16(dst_1, py_1, 3, 6);

  436. CLOSEYUV2RGBFUNC(8)

  437. 

  438. YUV2RGBFUNC(yuv2rgb_c_15_ordered_dither, uint16_t, 0)

  439.     const uint8_t *d16 = ff_dither_2x2_8[y & 1];

  440.     const uint8_t *e16 = ff_dither_2x2_8[(y & 1)^1];

  441. 

  442. #define PUTRGB15(dst, src, i, o)                    \

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

  444.     dst[2 * i]     = r[Y + d16[0 + o]] +            \

  445.                      g[Y + d16[1 + o]] +            \

  446.                      b[Y + e16[0 + o]];             \

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

  448.     dst[2 * i + 1] = r[Y + d16[1 + o]] +            \

  449.                      g[Y + d16[0 + o]] +            \

  450.                      b[Y + e16[1 + o]];

  451.     LOADCHROMA(0);

  452.     PUTRGB15(dst_1, py_1, 0, 0);

  453.     PUTRGB15(dst_2, py_2, 0, 0 + 8);

  454. 

  455.     LOADCHROMA(1);

  456.     PUTRGB15(dst_2, py_2, 1, 2 + 8);

  457.     PUTRGB15(dst_1, py_1, 1, 2);

  458. 

  459.     LOADCHROMA(2);

  460.     PUTRGB15(dst_1, py_1, 2, 4);

  461.     PUTRGB15(dst_2, py_2, 2, 4 + 8);

  462. 

  463.     LOADCHROMA(3);

  464.     PUTRGB15(dst_2, py_2, 3, 6 + 8);

  465.     PUTRGB15(dst_1, py_1, 3, 6);

  466. CLOSEYUV2RGBFUNC(8)

  467. 

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

  469. YUV2RGBFUNC(yuv2rgb_c_12_ordered_dither, uint16_t, 0)

  470.     const uint8_t *d16 = ff_dither_4x4_16[y & 3];

  471. 

  472. #define PUTRGB12(dst, src, i, o)                    \

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

  474.     dst[2 * i]     = r[Y + d16[0 + o]] +            \

  475.                      g[Y + d16[0 + o]] +            \

  476.                      b[Y + d16[0 + o]];             \

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

  478.     dst[2 * i + 1] = r[Y + d16[1 + o]] +            \

  479.                      g[Y + d16[1 + o]] +            \

  480.                      b[Y + d16[1 + o]];

  481. 

  482.     LOADCHROMA(0);

  483.     PUTRGB12(dst_1, py_1, 0, 0);

  484.     PUTRGB12(dst_2, py_2, 0, 0 + 8);

  485. 

  486.     LOADCHROMA(1);

  487.     PUTRGB12(dst_2, py_2, 1, 2 + 8);

  488.     PUTRGB12(dst_1, py_1, 1, 2);

  489. 

  490.     LOADCHROMA(2);

  491.     PUTRGB12(dst_1, py_1, 2, 4);

  492.     PUTRGB12(dst_2, py_2, 2, 4 + 8);

  493. 

  494.     LOADCHROMA(3);

  495.     PUTRGB12(dst_2, py_2, 3, 6 + 8);

  496.     PUTRGB12(dst_1, py_1, 3, 6);

  497. CLOSEYUV2RGBFUNC(8)

  498. 

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

  500. YUV2RGBFUNC(yuv2rgb_c_8_ordered_dither, uint8_t, 0)

  501.     const uint8_t *d32 = ff_dither_8x8_32[y & 7];

  502.     const uint8_t *d64 = ff_dither_8x8_73[y & 7];

  503. 

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

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

  506.     dst[2 * i]     = r[Y + d32[0 + o]] +            \

  507.                      g[Y + d32[0 + o]] +            \

  508.                      b[Y + d64[0 + o]];             \

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

  510.     dst[2 * i + 1] = r[Y + d32[1 + o]] +            \

  511.                      g[Y + d32[1 + o]] +            \

  512.                      b[Y + d64[1 + o]];

  513. 

  514.     LOADCHROMA(0);

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

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

  517. 

  518.     LOADCHROMA(1);

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

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

  521. 

  522.     LOADCHROMA(2);

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

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

  525. 

  526.     LOADCHROMA(3);

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

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

  529. 

  530. ENDYUV2RGBLINE(8, 0)

  531.     const uint8_t *d32 = ff_dither_8x8_32[y & 7];

  532.     const uint8_t *d64 = ff_dither_8x8_73[y & 7];

  533.     LOADCHROMA(0);

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

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

  536. 

  537.     LOADCHROMA(1);

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

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

  540. 

  541. ENDYUV2RGBLINE(8, 1)

  542.     const uint8_t *d32 = ff_dither_8x8_32[y & 7];

  543.     const uint8_t *d64 = ff_dither_8x8_73[y & 7];

  544.     LOADCHROMA(0);

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

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

  547. 

  548. ENDYUV2RGBFUNC()

  549. 

  550. 

  551. YUV2RGBFUNC(yuv2rgb_c_4_ordered_dither, uint8_t, 0)

  552.     const uint8_t * d64 = ff_dither_8x8_73[y & 7];

  553.     const uint8_t *d128 = ff_dither_8x8_220[y & 7];

  554.     int acc;

  555. 

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

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

  558.     acc    = r[Y + d128[0 + o]] +                   \

  559.              g[Y +  d64[0 + o]] +                   \

  560.              b[Y + d128[0 + o]];                    \

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

  562.     acc   |= (r[Y + d128[1 + o]] +                  \

  563.               g[Y +  d64[1 + o]] +                  \

  564.               b[Y + d128[1 + o]]) << 4;             \

  565.     dst[i] = acc;

  566. 

  567.     LOADCHROMA(0);

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

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

  570. 

  571.     LOADCHROMA(1);

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

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

  574. 

  575.     LOADCHROMA(2);

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

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

  578. 

  579.     LOADCHROMA(3);

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

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

  582. 

  583. ENDYUV2RGBLINE(4, 0)

  584.     const uint8_t * d64 = ff_dither_8x8_73[y & 7];

  585.     const uint8_t *d128 = ff_dither_8x8_220[y & 7];

  586.     int acc;

  587.     LOADCHROMA(0);

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

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

  590. 

  591.     LOADCHROMA(1);

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

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

  594. 

  595. ENDYUV2RGBLINE(4, 1)

  596.     const uint8_t * d64 = ff_dither_8x8_73[y & 7];

  597.     const uint8_t *d128 = ff_dither_8x8_220[y & 7];

  598.     int acc;

  599.     LOADCHROMA(0);

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

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

  602. ENDYUV2RGBFUNC()

  603. 

  604. YUV2RGBFUNC(yuv2rgb_c_4b_ordered_dither, uint8_t, 0)

  605.     const uint8_t *d64  = ff_dither_8x8_73[y & 7];

  606.     const uint8_t *d128 = ff_dither_8x8_220[y & 7];

  607. 

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

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

  610.     dst[2 * i]     = r[Y + d128[0 + o]] +           \

  611.                      g[Y +  d64[0 + o]] +           \

  612.                      b[Y + d128[0 + o]];            \

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

  614.     dst[2 * i + 1] = r[Y + d128[1 + o]] +           \

  615.                      g[Y +  d64[1 + o]] +           \

  616.                      b[Y + d128[1 + o]];

  617. 

  618.     LOADCHROMA(0);

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

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

  621. 

  622.     LOADCHROMA(1);

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

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

  625. 

  626.     LOADCHROMA(2);

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

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

  629. 

  630.     LOADCHROMA(3);

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

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

  633. ENDYUV2RGBLINE(8, 0)

  634.     const uint8_t *d64  = ff_dither_8x8_73[y & 7];

  635.     const uint8_t *d128 = ff_dither_8x8_220[y & 7];

  636.     LOADCHROMA(0);

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

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

  639. 

  640.     LOADCHROMA(1);

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

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

  643. ENDYUV2RGBLINE(8, 1)

  644.     const uint8_t *d64  = ff_dither_8x8_73[y & 7];

  645.     const uint8_t *d128 = ff_dither_8x8_220[y & 7];

  646.     LOADCHROMA(0);

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

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

  649. ENDYUV2RGBFUNC()

  650. 

  651. YUV2RGBFUNC(yuv2rgb_c_1_ordered_dither, uint8_t, 0)

  652.     const uint8_t *d128 = ff_dither_8x8_220[y & 7];

  653.     char out_1 = 0, out_2 = 0;

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

  655. 

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

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

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

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

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

  661. 

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

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

  664. 

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

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

  667. 

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

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

  670. 

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

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

  673. 

  674.     dst_1[0] = out_1;

  675.     dst_2[0] = out_2;

  676. CLOSEYUV2RGBFUNC(1)

  677. 

  678. SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)

  679. {

  680.     SwsFunc t = NULL;

  681. 

  682.     if (ARCH_PPC)

  683.         t = ff_yuv2rgb_init_ppc(c);

  684.     if (ARCH_X86)

  685.         t = ff_yuv2rgb_init_x86(c);

  686. 

  687.     if (t)

  688.         return t;

  689. 

  690.     av_log(c, AV_LOG_WARNING,

  691.            "No accelerated colorspace conversion found from %s to %s.\n",

  692.            av_get_pix_fmt_name(c->srcFormat), av_get_pix_fmt_name(c->dstFormat));

  693. 

  694.     switch (c->dstFormat) {

  695.     case AV_PIX_FMT_BGR48BE:

  696.     case AV_PIX_FMT_BGR48LE:

  697.         return yuv2rgb_c_bgr48;

  698.     case AV_PIX_FMT_RGB48BE:

  699.     case AV_PIX_FMT_RGB48LE:

  700.         return yuv2rgb_c_48;

  701.     case AV_PIX_FMT_ARGB:

  702.     case AV_PIX_FMT_ABGR:

  703.         if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat))

  704.             return yuva2argb_c;

  705.     case AV_PIX_FMT_RGBA:

  706.     case AV_PIX_FMT_BGRA:

  707.         return (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat)) ? yuva2rgba_c : yuv2rgb_c_32;

  708.     case AV_PIX_FMT_RGB24:

  709.         return yuv2rgb_c_24_rgb;

  710.     case AV_PIX_FMT_BGR24:

  711.         return yuv2rgb_c_24_bgr;

  712.     case AV_PIX_FMT_RGB565:

  713.     case AV_PIX_FMT_BGR565:

  714.         return yuv2rgb_c_16_ordered_dither;

  715.     case AV_PIX_FMT_RGB555:

  716.     case AV_PIX_FMT_BGR555:

  717.         return yuv2rgb_c_15_ordered_dither;

  718.     case AV_PIX_FMT_RGB444:

  719.     case AV_PIX_FMT_BGR444:

  720.         return yuv2rgb_c_12_ordered_dither;

  721.     case AV_PIX_FMT_RGB8:

  722.     case AV_PIX_FMT_BGR8:

  723.         return yuv2rgb_c_8_ordered_dither;

  724.     case AV_PIX_FMT_RGB4:

  725.     case AV_PIX_FMT_BGR4:

  726.         return yuv2rgb_c_4_ordered_dither;

  727.     case AV_PIX_FMT_RGB4_BYTE:

  728.     case AV_PIX_FMT_BGR4_BYTE:

  729.         return yuv2rgb_c_4b_ordered_dither;

  730.     case AV_PIX_FMT_MONOBLACK:

  731.         return yuv2rgb_c_1_ordered_dither;

  732.     }

  733.     return NULL;

  734. }

  735. 

  736. static void fill_table(uint8_t* table[256 + 2*YUVRGB_TABLE_HEADROOM], const int elemsize,

  737.                        const int64_t inc, void *y_tab)

  738. {

  739.     int i;

  740.     uint8_t *y_table = y_tab;

  741. 

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

  743. 

  744.     for (i = 0; i < 256 + 2*YUVRGB_TABLE_HEADROOM; i++) {

  745.         int64_t cb = av_clip_uint8(i-YUVRGB_TABLE_HEADROOM)*inc;

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

  747.     }

  748. }

  749. 

  750. static void fill_gv_table(int table[256 + 2*YUVRGB_TABLE_HEADROOM], const int elemsize, const int64_t inc)

  751. {

  752.     int i;

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

  754. 

  755.     for (i = 0; i < 256 + 2*YUVRGB_TABLE_HEADROOM; i++) {

  756.         int64_t cb = av_clip_uint8(i-YUVRGB_TABLE_HEADROOM)*inc;

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

  758.     }

  759. }

  760. 

  761. static uint16_t roundToInt16(int64_t f)

  762. {

  763.     int r = (f + (1 << 15)) >> 16;

  764. 

  765.     if (r < -0x7FFF)

  766.         return 0x8000;

  767.     else if (r > 0x7FFF)

  768.         return 0x7FFF;

  769.     else

  770.         return r;

  771. }

  772. 

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

  774.                                      int fullRange, int brightness,

  775.                                      int contrast, int saturation)

  776. {

  777.     const int isRgb = c->dstFormat == AV_PIX_FMT_RGB32     ||

  778.                       c->dstFormat == AV_PIX_FMT_RGB32_1   ||

  779.                       c->dstFormat == AV_PIX_FMT_BGR24     ||

  780.                       c->dstFormat == AV_PIX_FMT_RGB565BE  ||

  781.                       c->dstFormat == AV_PIX_FMT_RGB565LE  ||

  782.                       c->dstFormat == AV_PIX_FMT_RGB555BE  ||

  783.                       c->dstFormat == AV_PIX_FMT_RGB555LE  ||

  784.                       c->dstFormat == AV_PIX_FMT_RGB444BE  ||

  785.                       c->dstFormat == AV_PIX_FMT_RGB444LE  ||

  786.                       c->dstFormat == AV_PIX_FMT_RGB8      ||

  787.                       c->dstFormat == AV_PIX_FMT_RGB4      ||

  788.                       c->dstFormat == AV_PIX_FMT_RGB4_BYTE ||

  789.                       c->dstFormat == AV_PIX_FMT_MONOBLACK;

  790.     const int isNotNe = c->dstFormat == AV_PIX_FMT_NE(RGB565LE, RGB565BE) ||

  791.                         c->dstFormat == AV_PIX_FMT_NE(RGB555LE, RGB555BE) ||

  792.                         c->dstFormat == AV_PIX_FMT_NE(RGB444LE, RGB444BE) ||

  793.                         c->dstFormat == AV_PIX_FMT_NE(BGR565LE, BGR565BE) ||

  794.                         c->dstFormat == AV_PIX_FMT_NE(BGR555LE, BGR555BE) ||

  795.                         c->dstFormat == AV_PIX_FMT_NE(BGR444LE, BGR444BE);

  796.     const int bpp = c->dstFormatBpp;

  797.     uint8_t *y_table;

  798.     uint16_t *y_table16;

  799.     uint32_t *y_table32;

  800.     int i, base, rbase, gbase, bbase, av_uninit(abase), needAlpha;

  801.     const int yoffs = (fullRange ? 384 : 326) + YUVRGB_TABLE_LUMA_HEADROOM;

  802.     const int table_plane_size = 1024 + 2*YUVRGB_TABLE_LUMA_HEADROOM;

  803. 

  804.     int64_t crv =  inv_table[0];

  805.     int64_t cbu =  inv_table[1];

  806.     int64_t cgu = -inv_table[2];

  807.     int64_t cgv = -inv_table[3];

  808.     int64_t cy  = 1 << 16;

  809.     int64_t oy  = 0;

  810.     int64_t yb  = 0;

  811. 

  812.     if (!fullRange) {

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

  814.         oy = 16 << 16;

  815.     } else {

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

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

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

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

  820.     }

  821. 

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

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

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

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

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

  827.     oy  -= 256 * brightness;

  828. 

  829.     c->uOffset = 0x0400040004000400LL;

  830.     c->vOffset = 0x0400040004000400LL;

  831.     c->yCoeff  = roundToInt16(cy  * (1 << 13)) * 0x0001000100010001ULL;

  832.     c->vrCoeff = roundToInt16(crv * (1 << 13)) * 0x0001000100010001ULL;

  833.     c->ubCoeff = roundToInt16(cbu * (1 << 13)) * 0x0001000100010001ULL;

  834.     c->vgCoeff = roundToInt16(cgv * (1 << 13)) * 0x0001000100010001ULL;

  835.     c->ugCoeff = roundToInt16(cgu * (1 << 13)) * 0x0001000100010001ULL;

  836.     c->yOffset = roundToInt16(oy  * (1 <<  3)) * 0x0001000100010001ULL;

  837. 

  838.     c->yuv2rgb_y_coeff   = (int16_t)roundToInt16(cy  * (1 << 13));

  839.     c->yuv2rgb_y_offset  = (int16_t)roundToInt16(oy  * (1 <<  9));

  840.     c->yuv2rgb_v2r_coeff = (int16_t)roundToInt16(crv * (1 << 13));

  841.     c->yuv2rgb_v2g_coeff = (int16_t)roundToInt16(cgv * (1 << 13));

  842.     c->yuv2rgb_u2g_coeff = (int16_t)roundToInt16(cgu * (1 << 13));

  843.     c->yuv2rgb_u2b_coeff = (int16_t)roundToInt16(cbu * (1 << 13));

  844. 

  845.     //scale coefficients by cy

  846.     crv = ((crv * (1 << 16)) + 0x8000) / FFMAX(cy, 1);

  847.     cbu = ((cbu * (1 << 16)) + 0x8000) / FFMAX(cy, 1);

  848.     cgu = ((cgu * (1 << 16)) + 0x8000) / FFMAX(cy, 1);

  849.     cgv = ((cgv * (1 << 16)) + 0x8000) / FFMAX(cy, 1);

  850. 

  851.     av_freep(&c->yuvTable);

  852. 

  853. #define ALLOC_YUV_TABLE(x)          \

  854.         c->yuvTable = av_malloc(x); \

  855.         if (!c->yuvTable)           \

  856.             return AVERROR(ENOMEM);

  857.     switch (bpp) {

  858.     case 1:

  859.         ALLOC_YUV_TABLE(table_plane_size);

  860.         y_table     = c->yuvTable;

  861.         yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;

  862.         for (i = 0; i < table_plane_size - 110; i++) {

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

  864.             yb               += cy;

  865.         }

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

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

  868.         break;

  869.     case 4:

  870.     case 4 | 128:

  871.         rbase       = isRgb ? 3 : 0;

  872.         gbase       = 1;

  873.         bbase       = isRgb ? 0 : 3;

  874.         ALLOC_YUV_TABLE(table_plane_size * 3);

  875.         y_table     = c->yuvTable;

  876.         yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;

  877.         for (i = 0; i < table_plane_size - 110; i++) {

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

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

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

  881.             y_table[i + 110 + 2*table_plane_size] = (yval >> 7)        << bbase;

  882.             yb += cy;

  883.         }

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

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

  886.         fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2*table_plane_size);

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

  888.         break;

  889.     case 8:

  890.         rbase       = isRgb ? 5 : 0;

  891.         gbase       = isRgb ? 2 : 3;

  892.         bbase       = isRgb ? 0 : 6;

  893.         ALLOC_YUV_TABLE(table_plane_size * 3);

  894.         y_table     = c->yuvTable;

  895.         yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;

  896.         for (i = 0; i < table_plane_size - 38; i++) {

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

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

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

  900.             y_table[i + 37 + 2*table_plane_size] = ((yval + 43) / 85) << bbase;

  901.             yb += cy;

  902.         }

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

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

  905.         fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2*table_plane_size);

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

  907.         break;

  908.     case 12:

  909.         rbase       = isRgb ? 8 : 0;

  910.         gbase       = 4;

  911.         bbase       = isRgb ? 0 : 8;

  912.         ALLOC_YUV_TABLE(table_plane_size * 3 * 2);

  913.         y_table16   = c->yuvTable;

  914.         yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;

  915.         for (i = 0; i < table_plane_size; i++) {

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

  917.             y_table16[i]        = (yval >> 4) << rbase;

  918.             y_table16[i +   table_plane_size] = (yval >> 4) << gbase;

  919.             y_table16[i + 2*table_plane_size] = (yval >> 4) << bbase;

  920.             yb += cy;

  921.         }

  922.         if (isNotNe)

  923.             for (i = 0; i < table_plane_size * 3; i++)

  924.                 y_table16[i] = av_bswap16(y_table16[i]);

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

  926.         fill_table(c->table_gU, 2, cgu, y_table16 + yoffs +   table_plane_size);

  927.         fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2*table_plane_size);

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

  929.         break;

  930.     case 15:

  931.     case 16:

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

  933.         gbase       = 5;

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

  935.         ALLOC_YUV_TABLE(table_plane_size * 3 * 2);

  936.         y_table16   = c->yuvTable;

  937.         yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;

  938.         for (i = 0; i < table_plane_size; i++) {

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

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

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

  942.             y_table16[i + 2*table_plane_size] = (yval >> 3)          << bbase;

  943.             yb += cy;

  944.         }

  945.         if (isNotNe)

  946.             for (i = 0; i < table_plane_size * 3; i++)

  947.                 y_table16[i] = av_bswap16(y_table16[i]);

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

  949.         fill_table(c->table_gU, 2, cgu, y_table16 + yoffs +   table_plane_size);

  950.         fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2*table_plane_size);

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

  952.         break;

  953.     case 24:

  954.     case 48:

  955.         ALLOC_YUV_TABLE(table_plane_size);

  956.         y_table     = c->yuvTable;

  957.         yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;

  958.         for (i = 0; i < table_plane_size; i++) {

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

  960.             yb         += cy;

  961.         }

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

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

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

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

  966.         break;

  967.     case 32:

  968.     case 64:

  969.         base      = (c->dstFormat == AV_PIX_FMT_RGB32_1 ||

  970.                      c->dstFormat == AV_PIX_FMT_BGR32_1) ? 8 : 0;

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

  972.         gbase     = base + 8;

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

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

  975.         if (!needAlpha)

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

  977.         ALLOC_YUV_TABLE(table_plane_size * 3 * 4);

  978.         y_table32   = c->yuvTable;

  979.         yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;

  980.         for (i = 0; i < table_plane_size; i++) {

  981.             unsigned yval       = av_clip_uint8((yb + 0x8000) >> 16);

  982.             y_table32[i]        = (yval << rbase) +

  983.                                   (needAlpha ? 0 : (255u << abase));

  984.             y_table32[i +   table_plane_size] =  yval << gbase;

  985.             y_table32[i + 2*table_plane_size] =  yval << bbase;

  986.             yb += cy;

  987.         }

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

  989.         fill_table(c->table_gU, 4, cgu, y_table32 + yoffs +   table_plane_size);

  990.         fill_table(c->table_bU, 4, cbu, y_table32 + yoffs + 2*table_plane_size);

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

  992.         break;

  993.     default:

  994.         if(!isPlanar(c->dstFormat) || bpp <= 24)

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

  996.         return -1;

  997.     }

  998.     return 0;

  999. }