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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.             int yd = y + srcSliceY;                                         \

  142.             dst_type *dst_1 =                                               \

  143.                 (dst_type *)(dst[0] + (yd)     * dstStride[0]);             \

  144.             dst_type *dst_2 =                                               \

  145.                 (dst_type *)(dst[0] + (yd + 1) * dstStride[0]);             \

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

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

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

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

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

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

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

  153.             if (alpha) {                                                    \

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

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

  156.             }                                                               \

  157.             while (h_size--) {                                              \

  158.                 int av_unused U, V, Y;                                      \

  159. 

  160. #define ENDYUV2RGBLINE(dst_delta, ss)               \

  161.     pu    += 4 >> ss;                               \

  162.     pv    += 4 >> ss;                               \

  163.     py_1  += 8 >> ss;                               \

  164.     py_2  += 8 >> ss;                               \

  165.     dst_1 += dst_delta >> ss;                       \

  166.     dst_2 += dst_delta >> ss;                       \

  167.     }                                               \

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

  169.         int av_unused Y, U, V;                      \

  170. 

  171. #define ENDYUV2RGBFUNC()                            \

  172.             }                                       \

  173.         }                                           \

  174.         return srcSliceH;                           \

  175.     }

  176. 

  177. #define CLOSEYUV2RGBFUNC(dst_delta)                 \

  178.     ENDYUV2RGBLINE(dst_delta, 0)                    \

  179.     ENDYUV2RGBFUNC()

  180. 

  181. YUV2RGBFUNC(yuv2rgb_c_48, uint8_t, 0)

  182.     LOADCHROMA(0);

  183.     PUTRGB48(dst_1, py_1, 0);

  184.     PUTRGB48(dst_2, py_2, 0);

  185. 

  186.     LOADCHROMA(1);

  187.     PUTRGB48(dst_2, py_2, 1);

  188.     PUTRGB48(dst_1, py_1, 1);

  189. 

  190.     LOADCHROMA(2);

  191.     PUTRGB48(dst_1, py_1, 2);

  192.     PUTRGB48(dst_2, py_2, 2);

  193. 

  194.     LOADCHROMA(3);

  195.     PUTRGB48(dst_2, py_2, 3);

  196.     PUTRGB48(dst_1, py_1, 3);

  197. ENDYUV2RGBLINE(48, 0)

  198.     LOADCHROMA(0);

  199.     PUTRGB48(dst_1, py_1, 0);

  200.     PUTRGB48(dst_2, py_2, 0);

  201. 

  202.     LOADCHROMA(1);

  203.     PUTRGB48(dst_2, py_2, 1);

  204.     PUTRGB48(dst_1, py_1, 1);

  205. ENDYUV2RGBLINE(48, 1)

  206.     LOADCHROMA(0);

  207.     PUTRGB48(dst_1, py_1, 0);

  208.     PUTRGB48(dst_2, py_2, 0);

  209. ENDYUV2RGBFUNC()

  210. 

  211. YUV2RGBFUNC(yuv2rgb_c_bgr48, uint8_t, 0)

  212.     LOADCHROMA(0);

  213.     PUTBGR48(dst_1, py_1, 0);

  214.     PUTBGR48(dst_2, py_2, 0);

  215. 

  216.     LOADCHROMA(1);

  217.     PUTBGR48(dst_2, py_2, 1);

  218.     PUTBGR48(dst_1, py_1, 1);

  219. 

  220.     LOADCHROMA(2);

  221.     PUTBGR48(dst_1, py_1, 2);

  222.     PUTBGR48(dst_2, py_2, 2);

  223. 

  224.     LOADCHROMA(3);

  225.     PUTBGR48(dst_2, py_2, 3);

  226.     PUTBGR48(dst_1, py_1, 3);

  227. ENDYUV2RGBLINE(48, 0)

  228.     LOADCHROMA(0);

  229.     PUTBGR48(dst_1, py_1, 0);

  230.     PUTBGR48(dst_2, py_2, 0);

  231. 

  232.     LOADCHROMA(1);

  233.     PUTBGR48(dst_2, py_2, 1);

  234.     PUTBGR48(dst_1, py_1, 1);

  235. ENDYUV2RGBLINE(48, 1)

  236.     LOADCHROMA(0);

  237.     PUTBGR48(dst_1, py_1, 0);

  238.     PUTBGR48(dst_2, py_2, 0);

  239. ENDYUV2RGBFUNC()

  240. 

  241. YUV2RGBFUNC(yuv2rgb_c_32, uint32_t, 0)

  242.     LOADCHROMA(0);

  243.     PUTRGB(dst_1, py_1, 0);

  244.     PUTRGB(dst_2, py_2, 0);

  245. 

  246.     LOADCHROMA(1);

  247.     PUTRGB(dst_2, py_2, 1);

  248.     PUTRGB(dst_1, py_1, 1);

  249. 

  250.     LOADCHROMA(2);

  251.     PUTRGB(dst_1, py_1, 2);

  252.     PUTRGB(dst_2, py_2, 2);

  253. 

  254.     LOADCHROMA(3);

  255.     PUTRGB(dst_2, py_2, 3);

  256.     PUTRGB(dst_1, py_1, 3);

  257. ENDYUV2RGBLINE(8, 0)

  258.     LOADCHROMA(0);

  259.     PUTRGB(dst_1, py_1, 0);

  260.     PUTRGB(dst_2, py_2, 0);

  261. 

  262.     LOADCHROMA(1);

  263.     PUTRGB(dst_2, py_2, 1);

  264.     PUTRGB(dst_1, py_1, 1);

  265. ENDYUV2RGBLINE(8, 1)

  266.     LOADCHROMA(0);

  267.     PUTRGB(dst_1, py_1, 0);

  268.     PUTRGB(dst_2, py_2, 0);

  269. ENDYUV2RGBFUNC()

  270. 

  271. #if HAVE_BIGENDIAN

  272. YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)

  273. #else

  274. YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)

  275. #endif

  276.     LOADCHROMA(0);

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

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

  279. 

  280.     LOADCHROMA(1);

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

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

  283. 

  284.     LOADCHROMA(2);

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

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

  287. 

  288.     LOADCHROMA(3);

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

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

  291.     pa_1 += 8;

  292.     pa_2 += 8;

  293. ENDYUV2RGBLINE(8, 0)

  294.     LOADCHROMA(0);

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

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

  297. 

  298.     LOADCHROMA(1);

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

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

  301.     pa_1 += 4;

  302.     pa_2 += 4;

  303. ENDYUV2RGBLINE(8, 1)

  304.     LOADCHROMA(0);

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

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

  307. ENDYUV2RGBFUNC()

  308. 

  309. #if HAVE_BIGENDIAN

  310. YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)

  311. #else

  312. YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)

  313. #endif

  314.     LOADCHROMA(0);

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

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

  317. 

  318.     LOADCHROMA(1);

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

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

  321. 

  322.     LOADCHROMA(2);

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

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

  325. 

  326.     LOADCHROMA(3);

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

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

  329.     pa_1 += 8;

  330.     pa_2 += 8;

  331. ENDYUV2RGBLINE(8, 0)

  332.     LOADCHROMA(0);

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

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

  335. 

  336.     LOADCHROMA(1);

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

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

  339.     pa_1 += 4;

  340.     pa_2 += 4;

  341. ENDYUV2RGBLINE(8, 1)

  342.     LOADCHROMA(0);

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

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

  345. ENDYUV2RGBFUNC()

  346. 

  347. YUV2RGBFUNC(yuv2rgb_c_24_rgb, uint8_t, 0)

  348.     LOADCHROMA(0);

  349.     PUTRGB24(dst_1, py_1, 0);

  350.     PUTRGB24(dst_2, py_2, 0);

  351. 

  352.     LOADCHROMA(1);

  353.     PUTRGB24(dst_2, py_2, 1);

  354.     PUTRGB24(dst_1, py_1, 1);

  355. 

  356.     LOADCHROMA(2);

  357.     PUTRGB24(dst_1, py_1, 2);

  358.     PUTRGB24(dst_2, py_2, 2);

  359. 

  360.     LOADCHROMA(3);

  361.     PUTRGB24(dst_2, py_2, 3);

  362.     PUTRGB24(dst_1, py_1, 3);

  363. ENDYUV2RGBLINE(24, 0)

  364.     LOADCHROMA(0);

  365.     PUTRGB24(dst_1, py_1, 0);

  366.     PUTRGB24(dst_2, py_2, 0);

  367. 

  368.     LOADCHROMA(1);

  369.     PUTRGB24(dst_2, py_2, 1);

  370.     PUTRGB24(dst_1, py_1, 1);

  371. ENDYUV2RGBLINE(24, 1)

  372.     LOADCHROMA(0);

  373.     PUTRGB24(dst_1, py_1, 0);

  374.     PUTRGB24(dst_2, py_2, 0);

  375. ENDYUV2RGBFUNC()

  376. 

  377. // only trivial mods from yuv2rgb_c_24_rgb

  378. YUV2RGBFUNC(yuv2rgb_c_24_bgr, uint8_t, 0)

  379.     LOADCHROMA(0);

  380.     PUTBGR24(dst_1, py_1, 0);

  381.     PUTBGR24(dst_2, py_2, 0);

  382. 

  383.     LOADCHROMA(1);

  384.     PUTBGR24(dst_2, py_2, 1);

  385.     PUTBGR24(dst_1, py_1, 1);

  386. 

  387.     LOADCHROMA(2);

  388.     PUTBGR24(dst_1, py_1, 2);

  389.     PUTBGR24(dst_2, py_2, 2);

  390. 

  391.     LOADCHROMA(3);

  392.     PUTBGR24(dst_2, py_2, 3);

  393.     PUTBGR24(dst_1, py_1, 3);

  394. ENDYUV2RGBLINE(24, 0)

  395.     LOADCHROMA(0);

  396.     PUTBGR24(dst_1, py_1, 0);

  397.     PUTBGR24(dst_2, py_2, 0);

  398. 

  399.     LOADCHROMA(1);

  400.     PUTBGR24(dst_2, py_2, 1);

  401.     PUTBGR24(dst_1, py_1, 1);

  402. ENDYUV2RGBLINE(24, 1)

  403.     LOADCHROMA(0);

  404.     PUTBGR24(dst_1, py_1, 0);

  405.     PUTBGR24(dst_2, py_2, 0);

  406. ENDYUV2RGBFUNC()

  407. 

  408. YUV2RGBFUNC(yuv2rgb_c_16_ordered_dither, uint16_t, 0)

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

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

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

  412. 

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

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

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

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

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

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

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

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

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

  422.     LOADCHROMA(0);

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

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

  425. 

  426.     LOADCHROMA(1);

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

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

  429. 

  430.     LOADCHROMA(2);

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

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

  433. 

  434.     LOADCHROMA(3);

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

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

  437. CLOSEYUV2RGBFUNC(8)

  438. 

  439. YUV2RGBFUNC(yuv2rgb_c_15_ordered_dither, uint16_t, 0)

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

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

  442. 

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

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

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

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

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

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

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

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

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

  452.     LOADCHROMA(0);

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

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

  455. 

  456.     LOADCHROMA(1);

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

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

  459. 

  460.     LOADCHROMA(2);

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

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

  463. 

  464.     LOADCHROMA(3);

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

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

  467. CLOSEYUV2RGBFUNC(8)

  468. 

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

  470. YUV2RGBFUNC(yuv2rgb_c_12_ordered_dither, uint16_t, 0)

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

  472. 

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

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

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

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

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

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

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

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

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

  482. 

  483.     LOADCHROMA(0);

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

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

  486. 

  487.     LOADCHROMA(1);

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

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

  490. 

  491.     LOADCHROMA(2);

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

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

  494. 

  495.     LOADCHROMA(3);

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

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

  498. CLOSEYUV2RGBFUNC(8)

  499. 

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

  501. YUV2RGBFUNC(yuv2rgb_c_8_ordered_dither, uint8_t, 0)

  502.     const uint8_t *d32 = ff_dither_8x8_32[yd & 7];

  503.     const uint8_t *d64 = ff_dither_8x8_73[yd & 7];

  504. 

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

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

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

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

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

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

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

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

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

  514. 

  515.     LOADCHROMA(0);

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

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

  518. 

  519.     LOADCHROMA(1);

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

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

  522. 

  523.     LOADCHROMA(2);

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

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

  526. 

  527.     LOADCHROMA(3);

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

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

  530. 

  531. ENDYUV2RGBLINE(8, 0)

  532.     const uint8_t *d32 = ff_dither_8x8_32[yd & 7];

  533.     const uint8_t *d64 = ff_dither_8x8_73[yd & 7];

  534.     LOADCHROMA(0);

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

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

  537. 

  538.     LOADCHROMA(1);

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

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

  541. 

  542. ENDYUV2RGBLINE(8, 1)

  543.     const uint8_t *d32 = ff_dither_8x8_32[yd & 7];

  544.     const uint8_t *d64 = ff_dither_8x8_73[yd & 7];

  545.     LOADCHROMA(0);

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

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

  548. 

  549. ENDYUV2RGBFUNC()

  550. 

  551. 

  552. YUV2RGBFUNC(yuv2rgb_c_4_ordered_dither, uint8_t, 0)

  553.     const uint8_t * d64 = ff_dither_8x8_73[yd & 7];

  554.     const uint8_t *d128 = ff_dither_8x8_220[yd & 7];

  555.     int acc;

  556. 

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

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

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

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

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

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

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

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

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

  566.     dst[i] = acc;

  567. 

  568.     LOADCHROMA(0);

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

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

  571. 

  572.     LOADCHROMA(1);

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

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

  575. 

  576.     LOADCHROMA(2);

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

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

  579. 

  580.     LOADCHROMA(3);

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

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

  583. 

  584. ENDYUV2RGBLINE(4, 0)

  585.     const uint8_t * d64 = ff_dither_8x8_73[yd & 7];

  586.     const uint8_t *d128 = ff_dither_8x8_220[yd & 7];

  587.     int acc;

  588.     LOADCHROMA(0);

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

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

  591. 

  592.     LOADCHROMA(1);

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

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

  595. 

  596. ENDYUV2RGBLINE(4, 1)

  597.     const uint8_t * d64 = ff_dither_8x8_73[yd & 7];

  598.     const uint8_t *d128 = ff_dither_8x8_220[yd & 7];

  599.     int acc;

  600.     LOADCHROMA(0);

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

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

  603. ENDYUV2RGBFUNC()

  604. 

  605. YUV2RGBFUNC(yuv2rgb_c_4b_ordered_dither, uint8_t, 0)

  606.     const uint8_t *d64  = ff_dither_8x8_73[yd & 7];

  607.     const uint8_t *d128 = ff_dither_8x8_220[yd & 7];

  608. 

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

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

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

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

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

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

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

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

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

  618. 

  619.     LOADCHROMA(0);

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

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

  622. 

  623.     LOADCHROMA(1);

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

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

  626. 

  627.     LOADCHROMA(2);

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

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

  630. 

  631.     LOADCHROMA(3);

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

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

  634. ENDYUV2RGBLINE(8, 0)

  635.     const uint8_t *d64  = ff_dither_8x8_73[yd & 7];

  636.     const uint8_t *d128 = ff_dither_8x8_220[yd & 7];

  637.     LOADCHROMA(0);

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

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

  640. 

  641.     LOADCHROMA(1);

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

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

  644. ENDYUV2RGBLINE(8, 1)

  645.     const uint8_t *d64  = ff_dither_8x8_73[yd & 7];

  646.     const uint8_t *d128 = ff_dither_8x8_220[yd & 7];

  647.     LOADCHROMA(0);

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

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

  650. ENDYUV2RGBFUNC()

  651. 

  652. YUV2RGBFUNC(yuv2rgb_c_1_ordered_dither, uint8_t, 0)

  653.     const uint8_t *d128 = ff_dither_8x8_220[yd & 7];

  654.     char out_1 = 0, out_2 = 0;

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

  656. 

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

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

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

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

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

  662. 

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

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

  665. 

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

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

  668. 

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

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

  671. 

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

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

  674. 

  675.     dst_1[0] = out_1;

  676.     dst_2[0] = out_2;

  677. CLOSEYUV2RGBFUNC(1)

  678. 

  679. SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)

  680. {

  681.     SwsFunc t = NULL;

  682. 

  683.     if (ARCH_PPC)

  684.         t = ff_yuv2rgb_init_ppc(c);

  685.     if (ARCH_X86)

  686.         t = ff_yuv2rgb_init_x86(c);

  687. 

  688.     if (t)

  689.         return t;

  690. 

  691.     av_log(c, AV_LOG_WARNING,

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

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

  694. 

  695.     switch (c->dstFormat) {

  696.     case AV_PIX_FMT_BGR48BE:

  697.     case AV_PIX_FMT_BGR48LE:

  698.         return yuv2rgb_c_bgr48;

  699.     case AV_PIX_FMT_RGB48BE:

  700.     case AV_PIX_FMT_RGB48LE:

  701.         return yuv2rgb_c_48;

  702.     case AV_PIX_FMT_ARGB:

  703.     case AV_PIX_FMT_ABGR:

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

  705.             return yuva2argb_c;

  706.     case AV_PIX_FMT_RGBA:

  707.     case AV_PIX_FMT_BGRA:

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

  709.     case AV_PIX_FMT_RGB24:

  710.         return yuv2rgb_c_24_rgb;

  711.     case AV_PIX_FMT_BGR24:

  712.         return yuv2rgb_c_24_bgr;

  713.     case AV_PIX_FMT_RGB565:

  714.     case AV_PIX_FMT_BGR565:

  715.         return yuv2rgb_c_16_ordered_dither;

  716.     case AV_PIX_FMT_RGB555:

  717.     case AV_PIX_FMT_BGR555:

  718.         return yuv2rgb_c_15_ordered_dither;

  719.     case AV_PIX_FMT_RGB444:

  720.     case AV_PIX_FMT_BGR444:

  721.         return yuv2rgb_c_12_ordered_dither;

  722.     case AV_PIX_FMT_RGB8:

  723.     case AV_PIX_FMT_BGR8:

  724.         return yuv2rgb_c_8_ordered_dither;

  725.     case AV_PIX_FMT_RGB4:

  726.     case AV_PIX_FMT_BGR4:

  727.         return yuv2rgb_c_4_ordered_dither;

  728.     case AV_PIX_FMT_RGB4_BYTE:

  729.     case AV_PIX_FMT_BGR4_BYTE:

  730.         return yuv2rgb_c_4b_ordered_dither;

  731.     case AV_PIX_FMT_MONOBLACK:

  732.         return yuv2rgb_c_1_ordered_dither;

  733.     }

  734.     return NULL;

  735. }

  736. 

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

  738.                        const int64_t inc, void *y_tab)

  739. {

  740.     int i;

  741.     uint8_t *y_table = y_tab;

  742. 

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

  744. 

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

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

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

  748.     }

  749. }

  750. 

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

  752. {

  753.     int i;

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

  755. 

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

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

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

  759.     }

  760. }

  761. 

  762. static uint16_t roundToInt16(int64_t f)

  763. {

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

  765. 

  766.     if (r < -0x7FFF)

  767.         return 0x8000;

  768.     else if (r > 0x7FFF)

  769.         return 0x7FFF;

  770.     else

  771.         return r;

  772. }

  773. 

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

  775.                                      int fullRange, int brightness,

  776.                                      int contrast, int saturation)

  777. {

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

  779.                       c->dstFormat == AV_PIX_FMT_RGB32_1   ||

  780.                       c->dstFormat == AV_PIX_FMT_BGR24     ||

  781.                       c->dstFormat == AV_PIX_FMT_RGB565BE  ||

  782.                       c->dstFormat == AV_PIX_FMT_RGB565LE  ||

  783.                       c->dstFormat == AV_PIX_FMT_RGB555BE  ||

  784.                       c->dstFormat == AV_PIX_FMT_RGB555LE  ||

  785.                       c->dstFormat == AV_PIX_FMT_RGB444BE  ||

  786.                       c->dstFormat == AV_PIX_FMT_RGB444LE  ||

  787.                       c->dstFormat == AV_PIX_FMT_RGB8      ||

  788.                       c->dstFormat == AV_PIX_FMT_RGB4      ||

  789.                       c->dstFormat == AV_PIX_FMT_RGB4_BYTE ||

  790.                       c->dstFormat == AV_PIX_FMT_MONOBLACK;

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

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

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

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

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

  796.                         c->dstFormat == AV_PIX_FMT_NE(BGR444LE, BGR444BE) ||

  797.                         c->dstFormat == AV_PIX_FMT_NE(X2RGB10LE, X2RGB10BE);

  798.     const int bpp = c->dstFormatBpp;

  799.     uint8_t *y_table;

  800.     uint16_t *y_table16;

  801.     uint32_t *y_table32;

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

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

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

  805. 

  806.     int64_t crv =  inv_table[0];

  807.     int64_t cbu =  inv_table[1];

  808.     int64_t cgu = -inv_table[2];

  809.     int64_t cgv = -inv_table[3];

  810.     int64_t cy  = 1 << 16;

  811.     int64_t oy  = 0;

  812.     int64_t yb  = 0;

  813. 

  814.     if (!fullRange) {

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

  816.         oy = 16 << 16;

  817.     } else {

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

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

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

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

  822.     }

  823. 

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

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

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

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

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

  829.     oy  -= 256 * brightness;

  830. 

  831.     c->uOffset = 0x0400040004000400LL;

  832.     c->vOffset = 0x0400040004000400LL;

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

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

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

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

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

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

  839. 

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

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

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

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

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

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

  846. 

  847.     //scale coefficients by cy

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

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

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

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

  852. 

  853.     av_freep(&c->yuvTable);

  854. 

  855. #define ALLOC_YUV_TABLE(x)          \

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

  857.         if (!c->yuvTable)           \

  858.             return AVERROR(ENOMEM);

  859.     switch (bpp) {

  860.     case 1:

  861.         ALLOC_YUV_TABLE(table_plane_size);

  862.         y_table     = c->yuvTable;

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

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

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

  866.             yb               += cy;

  867.         }

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

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

  870.         break;

  871.     case 4:

  872.     case 4 | 128:

  873.         rbase       = isRgb ? 3 : 0;

  874.         gbase       = 1;

  875.         bbase       = isRgb ? 0 : 3;

  876.         ALLOC_YUV_TABLE(table_plane_size * 3);

  877.         y_table     = c->yuvTable;

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

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

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

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

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

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

  884.             yb += cy;

  885.         }

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

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

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

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

  890.         break;

  891.     case 8:

  892.         rbase       = isRgb ? 5 : 0;

  893.         gbase       = isRgb ? 2 : 3;

  894.         bbase       = isRgb ? 0 : 6;

  895.         ALLOC_YUV_TABLE(table_plane_size * 3);

  896.         y_table     = c->yuvTable;

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

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

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

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

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

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

  903.             yb += cy;

  904.         }

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

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

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

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

  909.         break;

  910.     case 12:

  911.         rbase       = isRgb ? 8 : 0;

  912.         gbase       = 4;

  913.         bbase       = isRgb ? 0 : 8;

  914.         ALLOC_YUV_TABLE(table_plane_size * 3 * 2);

  915.         y_table16   = c->yuvTable;

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

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

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

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

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

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

  922.             yb += cy;

  923.         }

  924.         if (isNotNe)

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

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

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

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

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

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

  931.         break;

  932.     case 15:

  933.     case 16:

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

  935.         gbase       = 5;

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

  937.         ALLOC_YUV_TABLE(table_plane_size * 3 * 2);

  938.         y_table16   = c->yuvTable;

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

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

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

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

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

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

  945.             yb += cy;

  946.         }

  947.         if (isNotNe)

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

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

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

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

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

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

  954.         break;

  955.     case 24:

  956.     case 48:

  957.         ALLOC_YUV_TABLE(table_plane_size);

  958.         y_table     = c->yuvTable;

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

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

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

  962.             yb         += cy;

  963.         }

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

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

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

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

  968.         break;

  969.     case 30:

  970.         rbase = 20;

  971.         gbase = 10;

  972.         bbase = 0;

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

  974.         if (!needAlpha)

  975.             abase = 30;

  976.         ALLOC_YUV_TABLE(table_plane_size * 3 * 4);

  977.         y_table32   = c->yuvTable;

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

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

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

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

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

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

  984.             yb += cy;

  985.         }

  986.         if (isNotNe) {

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

  988.                 y_table32[i] = av_bswap32(y_table32[i]);

  989.         }

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

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

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

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

  994.         break;

  995.     case 32:

  996.     case 64:

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

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

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

  1000.         gbase     = base + 8;

  1001.         bbase     = base + (isRgb ? 0 : 16);

  1002.         needAlpha = CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat);

  1003.         if (!needAlpha)

  1004.             abase = (base + 24) & 31;

  1005.         ALLOC_YUV_TABLE(table_plane_size * 3 * 4);

  1006.         y_table32   = c->yuvTable;

  1007.         yb = -(384 << 16) - YUVRGB_TABLE_LUMA_HEADROOM*cy - oy;

  1008.         for (i = 0; i < table_plane_size; i++) {

  1009.             unsigned yval       = av_clip_uint8((yb + 0x8000) >> 16);

  1010.             y_table32[i]        = (yval << rbase) +

  1011.                                   (needAlpha ? 0 : (255u << abase));

  1012.             y_table32[i +   table_plane_size] =  yval << gbase;

  1013.             y_table32[i + 2*table_plane_size] =  yval << bbase;

  1014.             yb += cy;

  1015.         }

  1016.         fill_table(c->table_rV, 4, crv, y_table32 + yoffs);

  1017.         fill_table(c->table_gU, 4, cgu, y_table32 + yoffs +   table_plane_size);

  1018.         fill_table(c->table_bU, 4, cbu, y_table32 + yoffs + 2*table_plane_size);

  1019.         fill_gv_table(c->table_gV, 4, cgv);

  1020.         break;

  1021.     default:

  1022.         if(!isPlanar(c->dstFormat) || bpp <= 24)

  1023.             av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);

  1024.         return AVERROR(EINVAL);

  1025.     }

  1026.     return 0;

  1027. }