falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54088 Commits
32 Branches
789MB
Tree: b4579a29c7
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from 'b4579a29c7'
${ noResults }
FFmpeg/libswscale/swscale_unscaled.c

1351 lines
55KB
Raw Blame History 

  1. /*

  2.  * Copyright (C) 2001-2011 Michael Niedermayer <michaelni@gmx.at>

  3.  *

  4.  * This file is part of FFmpeg.

  5.  *

  6.  * FFmpeg is free software; you can redistribute it and/or

  7.  * modify it under the terms of the GNU Lesser General Public

  8.  * License as published by the Free Software Foundation; either

  9.  * version 2.1 of the License, or (at your option) any later version.

  10.  *

  11.  * FFmpeg is distributed in the hope that it will be useful,

  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  14.  * Lesser General Public License for more details.

  15.  *

  16.  * You should have received a copy of the GNU Lesser General Public

  17.  * License along with FFmpeg; if not, write to the Free Software

  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  19.  */

  20. 

  21. #include <inttypes.h>

  22. #include <string.h>

  23. #include <math.h>

  24. #include <stdio.h>

  25. #include "config.h"

  26. #include "swscale.h"

  27. #include "swscale_internal.h"

  28. #include "rgb2rgb.h"

  29. #include "libavutil/intreadwrite.h"

  30. #include "libavutil/cpu.h"

  31. #include "libavutil/avutil.h"

  32. #include "libavutil/mathematics.h"

  33. #include "libavutil/bswap.h"

  34. #include "libavutil/pixdesc.h"

  35. #include "libavutil/avassert.h"

  36. 

  37. DECLARE_ALIGNED(8, const uint8_t, dithers)[8][8][8]={

  38. {

  39.   {   0,  1,  0,  1,  0,  1,  0,  1,},

  40.   {   1,  0,  1,  0,  1,  0,  1,  0,},

  41.   {   0,  1,  0,  1,  0,  1,  0,  1,},

  42.   {   1,  0,  1,  0,  1,  0,  1,  0,},

  43.   {   0,  1,  0,  1,  0,  1,  0,  1,},

  44.   {   1,  0,  1,  0,  1,  0,  1,  0,},

  45.   {   0,  1,  0,  1,  0,  1,  0,  1,},

  46.   {   1,  0,  1,  0,  1,  0,  1,  0,},

  47. },{

  48.   {   1,  2,  1,  2,  1,  2,  1,  2,},

  49.   {   3,  0,  3,  0,  3,  0,  3,  0,},

  50.   {   1,  2,  1,  2,  1,  2,  1,  2,},

  51.   {   3,  0,  3,  0,  3,  0,  3,  0,},

  52.   {   1,  2,  1,  2,  1,  2,  1,  2,},

  53.   {   3,  0,  3,  0,  3,  0,  3,  0,},

  54.   {   1,  2,  1,  2,  1,  2,  1,  2,},

  55.   {   3,  0,  3,  0,  3,  0,  3,  0,},

  56. },{

  57.   {   2,  4,  3,  5,  2,  4,  3,  5,},

  58.   {   6,  0,  7,  1,  6,  0,  7,  1,},

  59.   {   3,  5,  2,  4,  3,  5,  2,  4,},

  60.   {   7,  1,  6,  0,  7,  1,  6,  0,},

  61.   {   2,  4,  3,  5,  2,  4,  3,  5,},

  62.   {   6,  0,  7,  1,  6,  0,  7,  1,},

  63.   {   3,  5,  2,  4,  3,  5,  2,  4,},

  64.   {   7,  1,  6,  0,  7,  1,  6,  0,},

  65. },{

  66.   {   4,  8,  7, 11,  4,  8,  7, 11,},

  67.   {  12,  0, 15,  3, 12,  0, 15,  3,},

  68.   {   6, 10,  5,  9,  6, 10,  5,  9,},

  69.   {  14,  2, 13,  1, 14,  2, 13,  1,},

  70.   {   4,  8,  7, 11,  4,  8,  7, 11,},

  71.   {  12,  0, 15,  3, 12,  0, 15,  3,},

  72.   {   6, 10,  5,  9,  6, 10,  5,  9,},

  73.   {  14,  2, 13,  1, 14,  2, 13,  1,},

  74. },{

  75.   {   9, 17, 15, 23,  8, 16, 14, 22,},

  76.   {  25,  1, 31,  7, 24,  0, 30,  6,},

  77.   {  13, 21, 11, 19, 12, 20, 10, 18,},

  78.   {  29,  5, 27,  3, 28,  4, 26,  2,},

  79.   {   8, 16, 14, 22,  9, 17, 15, 23,},

  80.   {  24,  0, 30,  6, 25,  1, 31,  7,},

  81.   {  12, 20, 10, 18, 13, 21, 11, 19,},

  82.   {  28,  4, 26,  2, 29,  5, 27,  3,},

  83. },{

  84.   {  18, 34, 30, 46, 17, 33, 29, 45,},

  85.   {  50,  2, 62, 14, 49,  1, 61, 13,},

  86.   {  26, 42, 22, 38, 25, 41, 21, 37,},

  87.   {  58, 10, 54,  6, 57,  9, 53,  5,},

  88.   {  16, 32, 28, 44, 19, 35, 31, 47,},

  89.   {  48,  0, 60, 12, 51,  3, 63, 15,},

  90.   {  24, 40, 20, 36, 27, 43, 23, 39,},

  91.   {  56,  8, 52,  4, 59, 11, 55,  7,},

  92. },{

  93.   {  18, 34, 30, 46, 17, 33, 29, 45,},

  94.   {  50,  2, 62, 14, 49,  1, 61, 13,},

  95.   {  26, 42, 22, 38, 25, 41, 21, 37,},

  96.   {  58, 10, 54,  6, 57,  9, 53,  5,},

  97.   {  16, 32, 28, 44, 19, 35, 31, 47,},

  98.   {  48,  0, 60, 12, 51,  3, 63, 15,},

  99.   {  24, 40, 20, 36, 27, 43, 23, 39,},

  100.   {  56,  8, 52,  4, 59, 11, 55,  7,},

  101. },{

  102.   {  36, 68, 60, 92, 34, 66, 58, 90,},

  103.   { 100,  4,124, 28, 98,  2,122, 26,},

  104.   {  52, 84, 44, 76, 50, 82, 42, 74,},

  105.   { 116, 20,108, 12,114, 18,106, 10,},

  106.   {  32, 64, 56, 88, 38, 70, 62, 94,},

  107.   {  96,  0,120, 24,102,  6,126, 30,},

  108.   {  48, 80, 40, 72, 54, 86, 46, 78,},

  109.   { 112, 16,104,  8,118, 22,110, 14,},

  110. }};

  111. 

  112. const uint16_t dither_scale[15][16]={

  113. {    2,    3,    3,    5,    5,    5,    5,    5,    5,    5,    5,    5,    5,    5,    5,    5,},

  114. {    2,    3,    7,    7,   13,   13,   25,   25,   25,   25,   25,   25,   25,   25,   25,   25,},

  115. {    3,    3,    4,   15,   15,   29,   57,   57,   57,  113,  113,  113,  113,  113,  113,  113,},

  116. {    3,    4,    4,    5,   31,   31,   61,  121,  241,  241,  241,  241,  481,  481,  481,  481,},

  117. {    3,    4,    5,    5,    6,   63,   63,  125,  249,  497,  993,  993,  993,  993,  993, 1985,},

  118. {    3,    5,    6,    6,    6,    7,  127,  127,  253,  505, 1009, 2017, 4033, 4033, 4033, 4033,},

  119. {    3,    5,    6,    7,    7,    7,    8,  255,  255,  509, 1017, 2033, 4065, 8129,16257,16257,},

  120. {    3,    5,    6,    8,    8,    8,    8,    9,  511,  511, 1021, 2041, 4081, 8161,16321,32641,},

  121. {    3,    5,    7,    8,    9,    9,    9,    9,   10, 1023, 1023, 2045, 4089, 8177,16353,32705,},

  122. {    3,    5,    7,    8,   10,   10,   10,   10,   10,   11, 2047, 2047, 4093, 8185,16369,32737,},

  123. {    3,    5,    7,    8,   10,   11,   11,   11,   11,   11,   12, 4095, 4095, 8189,16377,32753,},

  124. {    3,    5,    7,    9,   10,   12,   12,   12,   12,   12,   12,   13, 8191, 8191,16381,32761,},

  125. {    3,    5,    7,    9,   10,   12,   13,   13,   13,   13,   13,   13,   14,16383,16383,32765,},

  126. {    3,    5,    7,    9,   10,   12,   14,   14,   14,   14,   14,   14,   14,   15,32767,32767,},

  127. {    3,    5,    7,    9,   11,   12,   14,   15,   15,   15,   15,   15,   15,   15,   16,65535,},

  128. };

  129. 

  130. 

  131. static void fillPlane(uint8_t *plane, int stride, int width, int height, int y,

  132.                       uint8_t val)

  133. {

  134.     int i;

  135.     uint8_t *ptr = plane + stride * y;

  136.     for (i = 0; i < height; i++) {

  137.         memset(ptr, val, width);

  138.         ptr += stride;

  139.     }

  140. }

  141. 

  142. static void copyPlane(const uint8_t *src, int srcStride,

  143.                       int srcSliceY, int srcSliceH, int width,

  144.                       uint8_t *dst, int dstStride)

  145. {

  146.     dst += dstStride * srcSliceY;

  147.     if (dstStride == srcStride && srcStride > 0) {

  148.         memcpy(dst, src, srcSliceH * dstStride);

  149.     } else {

  150.         int i;

  151.         for (i = 0; i < srcSliceH; i++) {

  152.             memcpy(dst, src, width);

  153.             src += srcStride;

  154.             dst += dstStride;

  155.         }

  156.     }

  157. }

  158. 

  159. static int planarToNv12Wrapper(SwsContext *c, const uint8_t *src[],

  160.                                int srcStride[], int srcSliceY,

  161.                                int srcSliceH, uint8_t *dstParam[],

  162.                                int dstStride[])

  163. {

  164.     uint8_t *dst = dstParam[1] + dstStride[1] * srcSliceY / 2;

  165. 

  166.     copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,

  167.               dstParam[0], dstStride[0]);

  168. 

  169.     if (c->dstFormat == AV_PIX_FMT_NV12)

  170.         interleaveBytes(src[1], src[2], dst, c->srcW / 2, srcSliceH / 2,

  171.                         srcStride[1], srcStride[2], dstStride[0]);

  172.     else

  173.         interleaveBytes(src[2], src[1], dst, c->srcW / 2, srcSliceH / 2,

  174.                         srcStride[2], srcStride[1], dstStride[0]);

  175. 

  176.     return srcSliceH;

  177. }

  178. 

  179. static int planarToYuy2Wrapper(SwsContext *c, const uint8_t *src[],

  180.                                int srcStride[], int srcSliceY, int srcSliceH,

  181.                                uint8_t *dstParam[], int dstStride[])

  182. {

  183.     uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;

  184. 

  185.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],

  186.                srcStride[1], dstStride[0]);

  187. 

  188.     return srcSliceH;

  189. }

  190. 

  191. static int planarToUyvyWrapper(SwsContext *c, const uint8_t *src[],

  192.                                int srcStride[], int srcSliceY, int srcSliceH,

  193.                                uint8_t *dstParam[], int dstStride[])

  194. {

  195.     uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;

  196. 

  197.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],

  198.                srcStride[1], dstStride[0]);

  199. 

  200.     return srcSliceH;

  201. }

  202. 

  203. static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t *src[],

  204.                                 int srcStride[], int srcSliceY, int srcSliceH,

  205.                                 uint8_t *dstParam[], int dstStride[])

  206. {

  207.     uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;

  208. 

  209.     yuv422ptoyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],

  210.                   srcStride[1], dstStride[0]);

  211. 

  212.     return srcSliceH;

  213. }

  214. 

  215. static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t *src[],

  216.                                 int srcStride[], int srcSliceY, int srcSliceH,

  217.                                 uint8_t *dstParam[], int dstStride[])

  218. {

  219.     uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;

  220. 

  221.     yuv422ptouyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],

  222.                   srcStride[1], dstStride[0]);

  223. 

  224.     return srcSliceH;

  225. }

  226. 

  227. static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t *src[],

  228.                                int srcStride[], int srcSliceY, int srcSliceH,

  229.                                uint8_t *dstParam[], int dstStride[])

  230. {

  231.     uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;

  232.     uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;

  233.     uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;

  234. 

  235.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],

  236.                  dstStride[1], srcStride[0]);

  237. 

  238.     if (dstParam[3])

  239.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  240. 

  241.     return srcSliceH;

  242. }

  243. 

  244. static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t *src[],

  245.                                int srcStride[], int srcSliceY, int srcSliceH,

  246.                                uint8_t *dstParam[], int dstStride[])

  247. {

  248.     uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;

  249.     uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;

  250.     uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;

  251. 

  252.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],

  253.                  dstStride[1], srcStride[0]);

  254. 

  255.     return srcSliceH;

  256. }

  257. 

  258. static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t *src[],

  259.                                int srcStride[], int srcSliceY, int srcSliceH,

  260.                                uint8_t *dstParam[], int dstStride[])

  261. {

  262.     uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;

  263.     uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;

  264.     uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;

  265. 

  266.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],

  267.                  dstStride[1], srcStride[0]);

  268. 

  269.     if (dstParam[3])

  270.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  271. 

  272.     return srcSliceH;

  273. }

  274. 

  275. static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t *src[],

  276.                                int srcStride[], int srcSliceY, int srcSliceH,

  277.                                uint8_t *dstParam[], int dstStride[])

  278. {

  279.     uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;

  280.     uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;

  281.     uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;

  282. 

  283.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],

  284.                  dstStride[1], srcStride[0]);

  285. 

  286.     return srcSliceH;

  287. }

  288. 

  289. static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels,

  290.                              const uint8_t *palette)

  291. {

  292.     int i;

  293.     for (i = 0; i < num_pixels; i++)

  294.         ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | (src[(i << 1) + 1] << 24);

  295. }

  296. 

  297. static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, int num_pixels,

  298.                                const uint8_t *palette)

  299. {

  300.     int i;

  301. 

  302.     for (i = 0; i < num_pixels; i++)

  303.         ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | src[(i << 1) + 1];

  304. }

  305. 

  306. static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels,

  307.                              const uint8_t *palette)

  308. {

  309.     int i;

  310. 

  311.     for (i = 0; i < num_pixels; i++) {

  312.         //FIXME slow?

  313.         dst[0] = palette[src[i << 1] * 4 + 0];

  314.         dst[1] = palette[src[i << 1] * 4 + 1];

  315.         dst[2] = palette[src[i << 1] * 4 + 2];

  316.         dst += 3;

  317.     }

  318. }

  319. 

  320. static int packed_16bpc_bswap(SwsContext *c, const uint8_t *src[],

  321.                               int srcStride[], int srcSliceY, int srcSliceH,

  322.                               uint8_t *dst[], int dstStride[])

  323. {

  324.     int i, j, p;

  325. 

  326.     for (p = 0; p < 4; p++) {

  327.         int srcstr = srcStride[p] / 2;

  328.         int dststr = dstStride[p] / 2;

  329.         uint16_t       *dstPtr =       (uint16_t *) dst[p];

  330.         const uint16_t *srcPtr = (const uint16_t *) src[p];

  331.         int min_stride         = FFMIN(FFABS(srcstr), FFABS(dststr));

  332.         if(!dstPtr || !srcPtr)

  333.             continue;

  334.         for (i = 0; i < (srcSliceH >> c->chrDstVSubSample); i++) {

  335.             for (j = 0; j < min_stride; j++) {

  336.                 dstPtr[j] = av_bswap16(srcPtr[j]);

  337.             }

  338.             srcPtr += srcstr;

  339.             dstPtr += dststr;

  340.         }

  341.     }

  342. 

  343.     return srcSliceH;

  344. }

  345. 

  346. static int palToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],

  347.                            int srcSliceY, int srcSliceH, uint8_t *dst[],

  348.                            int dstStride[])

  349. {

  350.     const enum AVPixelFormat srcFormat = c->srcFormat;

  351.     const enum AVPixelFormat dstFormat = c->dstFormat;

  352.     void (*conv)(const uint8_t *src, uint8_t *dst, int num_pixels,

  353.                  const uint8_t *palette) = NULL;

  354.     int i;

  355.     uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;

  356.     const uint8_t *srcPtr = src[0];

  357. 

  358.     if (srcFormat == AV_PIX_FMT_GRAY8A) {

  359.         switch (dstFormat) {

  360.         case AV_PIX_FMT_RGB32  : conv = gray8aToPacked32; break;

  361.         case AV_PIX_FMT_BGR32  : conv = gray8aToPacked32; break;

  362.         case AV_PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;

  363.         case AV_PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;

  364.         case AV_PIX_FMT_RGB24  : conv = gray8aToPacked24; break;

  365.         case AV_PIX_FMT_BGR24  : conv = gray8aToPacked24; break;

  366.         }

  367.     } else if (usePal(srcFormat)) {

  368.         switch (dstFormat) {

  369.         case AV_PIX_FMT_RGB32  : conv = sws_convertPalette8ToPacked32; break;

  370.         case AV_PIX_FMT_BGR32  : conv = sws_convertPalette8ToPacked32; break;

  371.         case AV_PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;

  372.         case AV_PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;

  373.         case AV_PIX_FMT_RGB24  : conv = sws_convertPalette8ToPacked24; break;

  374.         case AV_PIX_FMT_BGR24  : conv = sws_convertPalette8ToPacked24; break;

  375.         }

  376.     }

  377. 

  378.     if (!conv)

  379.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  380.                av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));

  381.     else {

  382.         for (i = 0; i < srcSliceH; i++) {

  383.             conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  384.             srcPtr += srcStride[0];

  385.             dstPtr += dstStride[0];

  386.         }

  387.     }

  388. 

  389.     return srcSliceH;

  390. }

  391. 

  392. static void gbr16ptopacked16(const uint16_t *src[], int srcStride[],

  393.                              uint8_t *dst, int dstStride, int srcSliceH,

  394.                              int alpha, int swap, int bpp, int width)

  395. {

  396.     int x, h, i;

  397.     int scale_high = 16 - bpp, scale_low = (bpp - 8) * 2;

  398.     for (h = 0; h < srcSliceH; h++) {

  399.         uint16_t *dest = (uint16_t *)(dst + dstStride * h);

  400.         uint16_t component;

  401. 

  402.         switch(swap) {

  403.         case 3:

  404.             if (alpha) {

  405.                 for (x = 0; x < width; x++) {

  406.                     component = av_bswap16(src[0][x]);

  407.                     *dest++ = av_bswap16(component << scale_high | component >> scale_low);

  408.                     component = av_bswap16(src[1][x]);

  409.                     *dest++ = av_bswap16(component << scale_high | component >> scale_low);

  410.                     component = av_bswap16(src[2][x]);

  411.                     *dest++ = av_bswap16(component << scale_high | component >> scale_low);

  412.                     *dest++ = 0xffff;

  413.                 }

  414.             } else {

  415.                 for (x = 0; x < width; x++) {

  416.                     component = av_bswap16(src[0][x]);

  417.                     *dest++ = av_bswap16(component << scale_high | component >> scale_low);

  418.                     component = av_bswap16(src[1][x]);

  419.                     *dest++ = av_bswap16(component << scale_high | component >> scale_low);

  420.                     component = av_bswap16(src[2][x]);

  421.                     *dest++ = av_bswap16(component << scale_high | component >> scale_low);

  422.                 }

  423.             }

  424.             break;

  425.         case 2:

  426.             if (alpha) {

  427.                 for (x = 0; x < width; x++) {

  428.                     *dest++ = av_bswap16(src[0][x] << scale_high | src[0][x] >> scale_low);

  429.                     *dest++ = av_bswap16(src[1][x] << scale_high | src[1][x] >> scale_low);

  430.                     *dest++ = av_bswap16(src[2][x] << scale_high | src[2][x] >> scale_low);

  431.                     *dest++ = 0xffff;

  432.                 }

  433.             } else {

  434.                 for (x = 0; x < width; x++) {

  435.                     *dest++ = av_bswap16(src[0][x] << scale_high | src[0][x] >> scale_low);

  436.                     *dest++ = av_bswap16(src[1][x] << scale_high | src[1][x] >> scale_low);

  437.                     *dest++ = av_bswap16(src[2][x] << scale_high | src[2][x] >> scale_low);

  438.                 }

  439.             }

  440.             break;

  441.         case 1:

  442.             if (alpha) {

  443.                 for (x = 0; x < width; x++) {

  444.                     *dest++ = av_bswap16(src[0][x]) << scale_high | av_bswap16(src[0][x]) >> scale_low;

  445.                     *dest++ = av_bswap16(src[1][x]) << scale_high | av_bswap16(src[1][x]) >> scale_low;

  446.                     *dest++ = av_bswap16(src[2][x]) << scale_high | av_bswap16(src[2][x]) >> scale_low;

  447.                     *dest++ = 0xffff;

  448.                 }

  449.             } else {

  450.                 for (x = 0; x < width; x++) {

  451.                     *dest++ = av_bswap16(src[0][x]) << scale_high | av_bswap16(src[0][x]) >> scale_low;

  452.                     *dest++ = av_bswap16(src[1][x]) << scale_high | av_bswap16(src[1][x]) >> scale_low;

  453.                     *dest++ = av_bswap16(src[2][x]) << scale_high | av_bswap16(src[2][x]) >> scale_low;

  454.                 }

  455.             }

  456.             break;

  457.         default:

  458.             if (alpha) {

  459.                 for (x = 0; x < width; x++) {

  460.                     *dest++ = src[0][x] << scale_high | src[0][x] >> scale_low;

  461.                     *dest++ = src[1][x] << scale_high | src[1][x] >> scale_low;

  462.                     *dest++ = src[2][x] << scale_high | src[2][x] >> scale_low;

  463.                     *dest++ = 0xffff;

  464.                 }

  465.             } else {

  466.                 for (x = 0; x < width; x++) {

  467.                     *dest++ = src[0][x] << scale_high | src[0][x] >> scale_low;

  468.                     *dest++ = src[1][x] << scale_high | src[1][x] >> scale_low;

  469.                     *dest++ = src[2][x] << scale_high | src[2][x] >> scale_low;

  470.                 }

  471.             }

  472.         }

  473.         for (i = 0; i < 3; i++)

  474.             src[i] += srcStride[i] >> 1;

  475.     }

  476. }

  477. 

  478. static int planarRgb16ToRgb16Wrapper(SwsContext *c, const uint8_t *src[],

  479.                                      int srcStride[], int srcSliceY, int srcSliceH,

  480.                                      uint8_t *dst[], int dstStride[])

  481. {

  482.     const uint16_t *src102[] = { (uint16_t *)src[1], (uint16_t *)src[0], (uint16_t *)src[2] };

  483.     const uint16_t *src201[] = { (uint16_t *)src[2], (uint16_t *)src[0], (uint16_t *)src[1] };

  484.     int stride102[] = { srcStride[1], srcStride[0], srcStride[2] };

  485.     int stride201[] = { srcStride[2], srcStride[0], srcStride[1] };

  486.     const AVPixFmtDescriptor *src_format = av_pix_fmt_desc_get(c->srcFormat);

  487.     const AVPixFmtDescriptor *dst_format = av_pix_fmt_desc_get(c->dstFormat);

  488.     int bits_per_sample = src_format->comp[0].depth_minus1 + 1;

  489.     int swap = 0;

  490.     if ( HAVE_BIGENDIAN && !(src_format->flags & AV_PIX_FMT_FLAG_BE) ||

  491.         !HAVE_BIGENDIAN &&   src_format->flags & AV_PIX_FMT_FLAG_BE)

  492.         swap++;

  493.     if ( HAVE_BIGENDIAN && !(dst_format->flags & AV_PIX_FMT_FLAG_BE) ||

  494.         !HAVE_BIGENDIAN &&   dst_format->flags & AV_PIX_FMT_FLAG_BE)

  495.         swap += 2;

  496. 

  497.     if ((src_format->flags & (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB)) !=

  498.         (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB) ||

  499.         bits_per_sample <= 8) {

  500.         av_log(c, AV_LOG_ERROR, "unsupported planar RGB conversion %s -> %s\n",

  501.                src_format->name, dst_format->name);

  502.         return srcSliceH;

  503.     }

  504.     switch (c->dstFormat) {

  505.     case AV_PIX_FMT_BGR48LE:

  506.     case AV_PIX_FMT_BGR48BE:

  507.         gbr16ptopacked16(src102, stride102,

  508.                          dst[0] + srcSliceY * dstStride[0], dstStride[0],

  509.                          srcSliceH, 0, swap, bits_per_sample, c->srcW);

  510.         break;

  511.     case AV_PIX_FMT_RGB48LE:

  512.     case AV_PIX_FMT_RGB48BE:

  513.         gbr16ptopacked16(src201, stride201,

  514.                          dst[0] + srcSliceY * dstStride[0], dstStride[0],

  515.                          srcSliceH, 0, swap, bits_per_sample, c->srcW);

  516.         break;

  517.     case AV_PIX_FMT_RGBA64LE:

  518.     case AV_PIX_FMT_RGBA64BE:

  519.          gbr16ptopacked16(src201, stride201,

  520.                           dst[0] + srcSliceY * dstStride[0], dstStride[0],

  521.                           srcSliceH, 1, swap, bits_per_sample, c->srcW);

  522.         break;

  523.     case AV_PIX_FMT_BGRA64LE:

  524.     case AV_PIX_FMT_BGRA64BE:

  525.         gbr16ptopacked16(src102, stride102,

  526.                          dst[0] + srcSliceY * dstStride[0], dstStride[0],

  527.                          srcSliceH, 1, swap, bits_per_sample, c->srcW);

  528.         break;

  529.     default:

  530.         av_log(c, AV_LOG_ERROR,

  531.                "unsupported planar RGB conversion %s -> %s\n",

  532.                src_format->name, dst_format->name);

  533.     }

  534. 

  535.     return srcSliceH;

  536. }

  537. 

  538. static void gbr24ptopacked24(const uint8_t *src[], int srcStride[],

  539.                              uint8_t *dst, int dstStride, int srcSliceH,

  540.                              int width)

  541. {

  542.     int x, h, i;

  543.     for (h = 0; h < srcSliceH; h++) {

  544.         uint8_t *dest = dst + dstStride * h;

  545.         for (x = 0; x < width; x++) {

  546.             *dest++ = src[0][x];

  547.             *dest++ = src[1][x];

  548.             *dest++ = src[2][x];

  549.         }

  550. 

  551.         for (i = 0; i < 3; i++)

  552.             src[i] += srcStride[i];

  553.     }

  554. }

  555. 

  556. static void gbr24ptopacked32(const uint8_t *src[], int srcStride[],

  557.                              uint8_t *dst, int dstStride, int srcSliceH,

  558.                              int alpha_first, int width)

  559. {

  560.     int x, h, i;

  561.     for (h = 0; h < srcSliceH; h++) {

  562.         uint8_t *dest = dst + dstStride * h;

  563. 

  564.         if (alpha_first) {

  565.             for (x = 0; x < width; x++) {

  566.                 *dest++ = 0xff;

  567.                 *dest++ = src[0][x];

  568.                 *dest++ = src[1][x];

  569.                 *dest++ = src[2][x];

  570.             }

  571.         } else {

  572.             for (x = 0; x < width; x++) {

  573.                 *dest++ = src[0][x];

  574.                 *dest++ = src[1][x];

  575.                 *dest++ = src[2][x];

  576.                 *dest++ = 0xff;

  577.             }

  578.         }

  579. 

  580.         for (i = 0; i < 3; i++)

  581.             src[i] += srcStride[i];

  582.     }

  583. }

  584. 

  585. static int planarRgbToRgbWrapper(SwsContext *c, const uint8_t *src[],

  586.                                  int srcStride[], int srcSliceY, int srcSliceH,

  587.                                  uint8_t *dst[], int dstStride[])

  588. {

  589.     int alpha_first = 0;

  590.     const uint8_t *src102[] = { src[1], src[0], src[2] };

  591.     const uint8_t *src201[] = { src[2], src[0], src[1] };

  592.     int stride102[] = { srcStride[1], srcStride[0], srcStride[2] };

  593.     int stride201[] = { srcStride[2], srcStride[0], srcStride[1] };

  594. 

  595.     if (c->srcFormat != AV_PIX_FMT_GBRP) {

  596.         av_log(c, AV_LOG_ERROR, "unsupported planar RGB conversion %s -> %s\n",

  597.                av_get_pix_fmt_name(c->srcFormat),

  598.                av_get_pix_fmt_name(c->dstFormat));

  599.         return srcSliceH;

  600.     }

  601. 

  602.     switch (c->dstFormat) {

  603.     case AV_PIX_FMT_BGR24:

  604.         gbr24ptopacked24(src102, stride102,

  605.                          dst[0] + srcSliceY * dstStride[0], dstStride[0],

  606.                          srcSliceH, c->srcW);

  607.         break;

  608. 

  609.     case AV_PIX_FMT_RGB24:

  610.         gbr24ptopacked24(src201, stride201,

  611.                          dst[0] + srcSliceY * dstStride[0], dstStride[0],

  612.                          srcSliceH, c->srcW);

  613.         break;

  614. 

  615.     case AV_PIX_FMT_ARGB:

  616.         alpha_first = 1;

  617.     case AV_PIX_FMT_RGBA:

  618.         gbr24ptopacked32(src201, stride201,

  619.                          dst[0] + srcSliceY * dstStride[0], dstStride[0],

  620.                          srcSliceH, alpha_first, c->srcW);

  621.         break;

  622. 

  623.     case AV_PIX_FMT_ABGR:

  624.         alpha_first = 1;

  625.     case AV_PIX_FMT_BGRA:

  626.         gbr24ptopacked32(src102, stride102,

  627.                          dst[0] + srcSliceY * dstStride[0], dstStride[0],

  628.                          srcSliceH, alpha_first, c->srcW);

  629.         break;

  630. 

  631.     default:

  632.         av_log(c, AV_LOG_ERROR,

  633.                "unsupported planar RGB conversion %s -> %s\n",

  634.                av_get_pix_fmt_name(c->srcFormat),

  635.                av_get_pix_fmt_name(c->dstFormat));

  636.     }

  637. 

  638.     return srcSliceH;

  639. }

  640. 

  641. static int planarRgbToplanarRgbWrapper(SwsContext *c, const uint8_t *src[],

  642.                                        int srcStride[], int srcSliceY, int srcSliceH,

  643.                                        uint8_t *dst[], int dstStride[])

  644. {

  645.     copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,

  646.               dst[0], dstStride[0]);

  647.     copyPlane(src[1], srcStride[1], srcSliceY, srcSliceH, c->srcW,

  648.               dst[1], dstStride[1]);

  649.     copyPlane(src[2], srcStride[2], srcSliceY, srcSliceH, c->srcW,

  650.               dst[2], dstStride[2]);

  651.     if (dst[3])

  652.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  653. 

  654.     return srcSliceH;

  655. }

  656. 

  657. static void packedtogbr24p(const uint8_t *src, int srcStride,

  658.                            uint8_t *dst[], int dstStride[], int srcSliceH,

  659.                            int alpha_first, int inc_size, int width)

  660. {

  661.     uint8_t *dest[3];

  662.     int x, h;

  663. 

  664.     dest[0] = dst[0];

  665.     dest[1] = dst[1];

  666.     dest[2] = dst[2];

  667. 

  668.     if (alpha_first)

  669.         src++;

  670. 

  671.     for (h = 0; h < srcSliceH; h++) {

  672.         for (x = 0; x < width; x++) {

  673.             dest[0][x] = src[0];

  674.             dest[1][x] = src[1];

  675.             dest[2][x] = src[2];

  676. 

  677.             src += inc_size;

  678.         }

  679.         src     += srcStride - width * inc_size;

  680.         dest[0] += dstStride[0];

  681.         dest[1] += dstStride[1];

  682.         dest[2] += dstStride[2];

  683.     }

  684. }

  685. 

  686. static int rgbToPlanarRgbWrapper(SwsContext *c, const uint8_t *src[],

  687.                                  int srcStride[], int srcSliceY, int srcSliceH,

  688.                                  uint8_t *dst[], int dstStride[])

  689. {

  690.     int alpha_first = 0;

  691.     int stride102[] = { dstStride[1], dstStride[0], dstStride[2] };

  692.     int stride201[] = { dstStride[2], dstStride[0], dstStride[1] };

  693.     uint8_t *dst102[] = { dst[1] + srcSliceY * dstStride[1],

  694.                           dst[0] + srcSliceY * dstStride[0],

  695.                           dst[2] + srcSliceY * dstStride[2] };

  696.     uint8_t *dst201[] = { dst[2] + srcSliceY * dstStride[2],

  697.                           dst[0] + srcSliceY * dstStride[0],

  698.                           dst[1] + srcSliceY * dstStride[1] };

  699. 

  700.     switch (c->srcFormat) {

  701.     case AV_PIX_FMT_RGB24:

  702.         packedtogbr24p((const uint8_t *) src[0], srcStride[0], dst201,

  703.                        stride201, srcSliceH, alpha_first, 3, c->srcW);

  704.         break;

  705.     case AV_PIX_FMT_BGR24:

  706.         packedtogbr24p((const uint8_t *) src[0], srcStride[0], dst102,

  707.                        stride102, srcSliceH, alpha_first, 3, c->srcW);

  708.         break;

  709.     case AV_PIX_FMT_ARGB:

  710.         alpha_first = 1;

  711.     case AV_PIX_FMT_RGBA:

  712.         packedtogbr24p((const uint8_t *) src[0], srcStride[0], dst201,

  713.                        stride201, srcSliceH, alpha_first, 4, c->srcW);

  714.         break;

  715.     case AV_PIX_FMT_ABGR:

  716.         alpha_first = 1;

  717.     case AV_PIX_FMT_BGRA:

  718.         packedtogbr24p((const uint8_t *) src[0], srcStride[0], dst102,

  719.                        stride102, srcSliceH, alpha_first, 4, c->srcW);

  720.         break;

  721.     default:

  722.         av_log(c, AV_LOG_ERROR,

  723.                "unsupported planar RGB conversion %s -> %s\n",

  724.                av_get_pix_fmt_name(c->srcFormat),

  725.                av_get_pix_fmt_name(c->dstFormat));

  726.     }

  727. 

  728.     return srcSliceH;

  729. }

  730. 

  731. #define isRGBA32(x) (            \

  732.            (x) == AV_PIX_FMT_ARGB   \

  733.         || (x) == AV_PIX_FMT_RGBA   \

  734.         || (x) == AV_PIX_FMT_BGRA   \

  735.         || (x) == AV_PIX_FMT_ABGR   \

  736.         )

  737. 

  738. #define isRGBA64(x) (                \

  739.            (x) == AV_PIX_FMT_RGBA64LE   \

  740.         || (x) == AV_PIX_FMT_RGBA64BE   \

  741.         || (x) == AV_PIX_FMT_BGRA64LE   \

  742.         || (x) == AV_PIX_FMT_BGRA64BE   \

  743.         )

  744. 

  745. #define isRGB48(x) (                \

  746.            (x) == AV_PIX_FMT_RGB48LE   \

  747.         || (x) == AV_PIX_FMT_RGB48BE   \

  748.         || (x) == AV_PIX_FMT_BGR48LE   \

  749.         || (x) == AV_PIX_FMT_BGR48BE   \

  750.         )

  751. 

  752. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  753. typedef void (* rgbConvFn) (const uint8_t *, uint8_t *, int);

  754. static rgbConvFn findRgbConvFn(SwsContext *c)

  755. {

  756.     const enum AVPixelFormat srcFormat = c->srcFormat;

  757.     const enum AVPixelFormat dstFormat = c->dstFormat;

  758.     const int srcId = c->srcFormatBpp;

  759.     const int dstId = c->dstFormatBpp;

  760.     rgbConvFn conv = NULL;

  761. 

  762. #define IS_NOT_NE(bpp, desc) \

  763.     (((bpp + 7) >> 3) == 2 && \

  764.      (!(desc->flags & AV_PIX_FMT_FLAG_BE) != !HAVE_BIGENDIAN))

  765. 

  766. #define CONV_IS(src, dst) (srcFormat == AV_PIX_FMT_##src && dstFormat == AV_PIX_FMT_##dst)

  767. 

  768.     if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {

  769.         if (     CONV_IS(ABGR, RGBA)

  770.               || CONV_IS(ARGB, BGRA)

  771.               || CONV_IS(BGRA, ARGB)

  772.               || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;

  773.         else if (CONV_IS(ABGR, ARGB)

  774.               || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;

  775.         else if (CONV_IS(ABGR, BGRA)

  776.               || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;

  777.         else if (CONV_IS(BGRA, RGBA)

  778.               || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;

  779.         else if (CONV_IS(BGRA, ABGR)

  780.               || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;

  781.     } else if (isRGB48(srcFormat) && isRGB48(dstFormat)) {

  782.         if      (CONV_IS(RGB48LE, BGR48LE)

  783.               || CONV_IS(BGR48LE, RGB48LE)

  784.               || CONV_IS(RGB48BE, BGR48BE)

  785.               || CONV_IS(BGR48BE, RGB48BE)) conv = rgb48tobgr48_nobswap;

  786.         else if (CONV_IS(RGB48LE, BGR48BE)

  787.               || CONV_IS(BGR48LE, RGB48BE)

  788.               || CONV_IS(RGB48BE, BGR48LE)

  789.               || CONV_IS(BGR48BE, RGB48LE)) conv = rgb48tobgr48_bswap;

  790.     } else if (isRGBA64(srcFormat) && isRGB48(dstFormat)) {

  791.         if      (CONV_IS(RGBA64LE, BGR48LE)

  792.               || CONV_IS(BGRA64LE, RGB48LE)

  793.               || CONV_IS(RGBA64BE, BGR48BE)

  794.               || CONV_IS(BGRA64BE, RGB48BE)) conv = rgb64tobgr48_nobswap;

  795.         else if (CONV_IS(RGBA64LE, BGR48BE)

  796.               || CONV_IS(BGRA64LE, RGB48BE)

  797.               || CONV_IS(RGBA64BE, BGR48LE)

  798.               || CONV_IS(BGRA64BE, RGB48LE)) conv = rgb64tobgr48_bswap;

  799.         else if (CONV_IS(RGBA64LE, RGB48LE)

  800.               || CONV_IS(BGRA64LE, BGR48LE)

  801.               || CONV_IS(RGBA64BE, RGB48BE)

  802.               || CONV_IS(BGRA64BE, BGR48BE)) conv = rgb64to48_nobswap;

  803.         else if (CONV_IS(RGBA64LE, RGB48BE)

  804.               || CONV_IS(BGRA64LE, BGR48BE)

  805.               || CONV_IS(RGBA64BE, RGB48LE)

  806.               || CONV_IS(BGRA64BE, BGR48LE)) conv = rgb64to48_bswap;

  807.     } else

  808.     /* BGR -> BGR */

  809.     if ((isBGRinInt(srcFormat) && isBGRinInt(dstFormat)) ||

  810.         (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {

  811.         switch (srcId | (dstId << 16)) {

  812.         case 0x000F000C: conv = rgb12to15; break;

  813.         case 0x000F0010: conv = rgb16to15; break;

  814.         case 0x000F0018: conv = rgb24to15; break;

  815.         case 0x000F0020: conv = rgb32to15; break;

  816.         case 0x0010000F: conv = rgb15to16; break;

  817.         case 0x00100018: conv = rgb24to16; break;

  818.         case 0x00100020: conv = rgb32to16; break;

  819.         case 0x0018000F: conv = rgb15to24; break;

  820.         case 0x00180010: conv = rgb16to24; break;

  821.         case 0x00180020: conv = rgb32to24; break;

  822.         case 0x0020000F: conv = rgb15to32; break;

  823.         case 0x00200010: conv = rgb16to32; break;

  824.         case 0x00200018: conv = rgb24to32; break;

  825.         }

  826.     } else if ((isBGRinInt(srcFormat) && isRGBinInt(dstFormat)) ||

  827.                (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {

  828.         switch (srcId | (dstId << 16)) {

  829.         case 0x000C000C: conv = rgb12tobgr12; break;

  830.         case 0x000F000F: conv = rgb15tobgr15; break;

  831.         case 0x000F0010: conv = rgb16tobgr15; break;

  832.         case 0x000F0018: conv = rgb24tobgr15; break;

  833.         case 0x000F0020: conv = rgb32tobgr15; break;

  834.         case 0x0010000F: conv = rgb15tobgr16; break;

  835.         case 0x00100010: conv = rgb16tobgr16; break;

  836.         case 0x00100018: conv = rgb24tobgr16; break;

  837.         case 0x00100020: conv = rgb32tobgr16; break;

  838.         case 0x0018000F: conv = rgb15tobgr24; break;

  839.         case 0x00180010: conv = rgb16tobgr24; break;

  840.         case 0x00180018: conv = rgb24tobgr24; break;

  841.         case 0x00180020: conv = rgb32tobgr24; break;

  842.         case 0x0020000F: conv = rgb15tobgr32; break;

  843.         case 0x00200010: conv = rgb16tobgr32; break;

  844.         case 0x00200018: conv = rgb24tobgr32; break;

  845.         }

  846.     }

  847. 

  848.     if ((dstFormat == AV_PIX_FMT_RGB32_1 || dstFormat == AV_PIX_FMT_BGR32_1) && !isRGBA32(srcFormat) && ALT32_CORR<0)

  849.         return NULL;

  850. 

  851.     return conv;

  852. }

  853. 

  854. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  855. static int rgbToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],

  856.                            int srcSliceY, int srcSliceH, uint8_t *dst[],

  857.                            int dstStride[])

  858. 

  859. {

  860.     const enum AVPixelFormat srcFormat = c->srcFormat;

  861.     const enum AVPixelFormat dstFormat = c->dstFormat;

  862.     const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(c->srcFormat);

  863.     const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(c->dstFormat);

  864.     const int srcBpp = (c->srcFormatBpp + 7) >> 3;

  865.     const int dstBpp = (c->dstFormatBpp + 7) >> 3;

  866.     rgbConvFn conv = findRgbConvFn(c);

  867. 

  868.     if (!conv) {

  869.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  870.                av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));

  871.     } else {

  872.         const uint8_t *srcPtr = src[0];

  873.               uint8_t *dstPtr = dst[0];

  874.         int src_bswap = IS_NOT_NE(c->srcFormatBpp, desc_src);

  875.         int dst_bswap = IS_NOT_NE(c->dstFormatBpp, desc_dst);

  876. 

  877.         if ((srcFormat == AV_PIX_FMT_RGB32_1 || srcFormat == AV_PIX_FMT_BGR32_1) &&

  878.             !isRGBA32(dstFormat))

  879.             srcPtr += ALT32_CORR;

  880. 

  881.         if ((dstFormat == AV_PIX_FMT_RGB32_1 || dstFormat == AV_PIX_FMT_BGR32_1) &&

  882.             !isRGBA32(srcFormat))

  883.             dstPtr += ALT32_CORR;

  884. 

  885.         if (dstStride[0] * srcBpp == srcStride[0] * dstBpp && srcStride[0] > 0 &&

  886.             !(srcStride[0] % srcBpp) && !dst_bswap && !src_bswap)

  887.             conv(srcPtr, dstPtr + dstStride[0] * srcSliceY,

  888.                  srcSliceH * srcStride[0]);

  889.         else {

  890.             int i, j;

  891.             dstPtr += dstStride[0] * srcSliceY;

  892. 

  893.             for (i = 0; i < srcSliceH; i++) {

  894.                 if(src_bswap) {

  895.                     for(j=0; j<c->srcW; j++)

  896.                         ((uint16_t*)c->formatConvBuffer)[j] = av_bswap16(((uint16_t*)srcPtr)[j]);

  897.                     conv(c->formatConvBuffer, dstPtr, c->srcW * srcBpp);

  898.                 }else

  899.                     conv(srcPtr, dstPtr, c->srcW * srcBpp);

  900.                 if(dst_bswap)

  901.                     for(j=0; j<c->srcW; j++)

  902.                         ((uint16_t*)dstPtr)[j] = av_bswap16(((uint16_t*)dstPtr)[j]);

  903.                 srcPtr += srcStride[0];

  904.                 dstPtr += dstStride[0];

  905.             }

  906.         }

  907.     }

  908.     return srcSliceH;

  909. }

  910. 

  911. static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t *src[],

  912.                               int srcStride[], int srcSliceY, int srcSliceH,

  913.                               uint8_t *dst[], int dstStride[])

  914. {

  915.     ff_rgb24toyv12(

  916.         src[0],

  917.         dst[0] +  srcSliceY       * dstStride[0],

  918.         dst[1] + (srcSliceY >> 1) * dstStride[1],

  919.         dst[2] + (srcSliceY >> 1) * dstStride[2],

  920.         c->srcW, srcSliceH,

  921.         dstStride[0], dstStride[1], srcStride[0],

  922.         c->input_rgb2yuv_table);

  923.     if (dst[3])

  924.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  925.     return srcSliceH;

  926. }

  927. 

  928. static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t *src[],

  929.                              int srcStride[], int srcSliceY, int srcSliceH,

  930.                              uint8_t *dst[], int dstStride[])

  931. {

  932.     copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,

  933.               dst[0], dstStride[0]);

  934. 

  935.     planar2x(src[1], dst[1] + dstStride[1] * (srcSliceY >> 1), c->chrSrcW,

  936.              srcSliceH >> 2, srcStride[1], dstStride[1]);

  937.     planar2x(src[2], dst[2] + dstStride[2] * (srcSliceY >> 1), c->chrSrcW,

  938.              srcSliceH >> 2, srcStride[2], dstStride[2]);

  939.     if (dst[3])

  940.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  941.     return srcSliceH;

  942. }

  943. 

  944. /* unscaled copy like stuff (assumes nearly identical formats) */

  945. static int packedCopyWrapper(SwsContext *c, const uint8_t *src[],

  946.                              int srcStride[], int srcSliceY, int srcSliceH,

  947.                              uint8_t *dst[], int dstStride[])

  948. {

  949.     if (dstStride[0] == srcStride[0] && srcStride[0] > 0)

  950.         memcpy(dst[0] + dstStride[0] * srcSliceY, src[0], srcSliceH * dstStride[0]);

  951.     else {

  952.         int i;

  953.         const uint8_t *srcPtr = src[0];

  954.         uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;

  955.         int length = 0;

  956. 

  957.         /* universal length finder */

  958.         while (length + c->srcW <= FFABS(dstStride[0]) &&

  959.                length + c->srcW <= FFABS(srcStride[0]))

  960.             length += c->srcW;

  961.         av_assert1(length != 0);

  962. 

  963.         for (i = 0; i < srcSliceH; i++) {

  964.             memcpy(dstPtr, srcPtr, length);

  965.             srcPtr += srcStride[0];

  966.             dstPtr += dstStride[0];

  967.         }

  968.     }

  969.     return srcSliceH;

  970. }

  971. 

  972. #define DITHER_COPY(dst, dstStride, src, srcStride, bswap, dbswap)\

  973.     uint16_t scale= dither_scale[dst_depth-1][src_depth-1];\

  974.     int shift= src_depth-dst_depth + dither_scale[src_depth-2][dst_depth-1];\

  975.     for (i = 0; i < height; i++) {\

  976.         const uint8_t *dither= dithers[src_depth-9][i&7];\

  977.         for (j = 0; j < length-7; j+=8){\

  978.             dst[j+0] = dbswap((bswap(src[j+0]) + dither[0])*scale>>shift);\

  979.             dst[j+1] = dbswap((bswap(src[j+1]) + dither[1])*scale>>shift);\

  980.             dst[j+2] = dbswap((bswap(src[j+2]) + dither[2])*scale>>shift);\

  981.             dst[j+3] = dbswap((bswap(src[j+3]) + dither[3])*scale>>shift);\

  982.             dst[j+4] = dbswap((bswap(src[j+4]) + dither[4])*scale>>shift);\

  983.             dst[j+5] = dbswap((bswap(src[j+5]) + dither[5])*scale>>shift);\

  984.             dst[j+6] = dbswap((bswap(src[j+6]) + dither[6])*scale>>shift);\

  985.             dst[j+7] = dbswap((bswap(src[j+7]) + dither[7])*scale>>shift);\

  986.         }\

  987.         for (; j < length; j++)\

  988.             dst[j] = dbswap((bswap(src[j]) + dither[j&7])*scale>>shift);\

  989.         dst += dstStride;\

  990.         src += srcStride;\

  991.     }

  992. 

  993. static int planarCopyWrapper(SwsContext *c, const uint8_t *src[],

  994.                              int srcStride[], int srcSliceY, int srcSliceH,

  995.                              uint8_t *dst[], int dstStride[])

  996. {

  997.     const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(c->srcFormat);

  998.     const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(c->dstFormat);

  999.     int plane, i, j;

  1000.     for (plane = 0; plane < 4; plane++) {

  1001.         int length = (plane == 0 || plane == 3) ? c->srcW  : FF_CEIL_RSHIFT(c->srcW,   c->chrDstHSubSample);

  1002.         int y =      (plane == 0 || plane == 3) ? srcSliceY: FF_CEIL_RSHIFT(srcSliceY, c->chrDstVSubSample);

  1003.         int height = (plane == 0 || plane == 3) ? srcSliceH: FF_CEIL_RSHIFT(srcSliceH, c->chrDstVSubSample);

  1004.         const uint8_t *srcPtr = src[plane];

  1005.         uint8_t *dstPtr = dst[plane] + dstStride[plane] * y;

  1006.         int shiftonly= plane==1 || plane==2 || (!c->srcRange && plane==0);

  1007. 

  1008.         if (!dst[plane])

  1009.             continue;

  1010.         // ignore palette for GRAY8

  1011.         if (plane == 1 && !dst[2]) continue;

  1012.         if (!src[plane] || (plane == 1 && !src[2])) {

  1013.             if (is16BPS(c->dstFormat) || isNBPS(c->dstFormat)) {

  1014.                 fillPlane16(dst[plane], dstStride[plane], length, height, y,

  1015.                         plane == 3, desc_dst->comp[plane].depth_minus1,

  1016.                         isBE(c->dstFormat));

  1017.             } else {

  1018.                 fillPlane(dst[plane], dstStride[plane], length, height, y,

  1019.                         (plane == 3) ? 255 : 128);

  1020.             }

  1021.         } else {

  1022.             if(isNBPS(c->srcFormat) || isNBPS(c->dstFormat)

  1023.                || (is16BPS(c->srcFormat) != is16BPS(c->dstFormat))

  1024.             ) {

  1025.                 const int src_depth = desc_src->comp[plane].depth_minus1 + 1;

  1026.                 const int dst_depth = desc_dst->comp[plane].depth_minus1 + 1;

  1027.                 const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;

  1028.                 uint16_t *dstPtr2 = (uint16_t*)dstPtr;

  1029. 

  1030.                 if (dst_depth == 8) {

  1031.                     if(isBE(c->srcFormat) == HAVE_BIGENDIAN){

  1032.                         DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, , )

  1033.                     } else {

  1034.                         DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, av_bswap16, )

  1035.                     }

  1036.                 } else if (src_depth == 8) {

  1037.                     for (i = 0; i < height; i++) {

  1038.                         #define COPY816(w)\

  1039.                         if(shiftonly){\

  1040.                             for (j = 0; j < length; j++)\

  1041.                                 w(&dstPtr2[j], srcPtr[j]<<(dst_depth-8));\

  1042.                         }else{\

  1043.                             for (j = 0; j < length; j++)\

  1044.                                 w(&dstPtr2[j], (srcPtr[j]<<(dst_depth-8)) |\

  1045.                                                (srcPtr[j]>>(2*8-dst_depth)));\

  1046.                         }

  1047.                         if(isBE(c->dstFormat)){

  1048.                             COPY816(AV_WB16)

  1049.                         } else {

  1050.                             COPY816(AV_WL16)

  1051.                         }

  1052.                         dstPtr2 += dstStride[plane]/2;

  1053.                         srcPtr  += srcStride[plane];

  1054.                     }

  1055.                 } else if (src_depth <= dst_depth) {

  1056.                     int orig_length = length;

  1057.                     for (i = 0; i < height; i++) {

  1058.                         if(isBE(c->srcFormat) == HAVE_BIGENDIAN &&

  1059.                            isBE(c->dstFormat) == HAVE_BIGENDIAN &&

  1060.                            shiftonly) {

  1061.                              unsigned shift = dst_depth - src_depth;

  1062.                              length = orig_length;

  1063. #if HAVE_FAST_64BIT

  1064. #define FAST_COPY_UP(shift) \

  1065.     for (j = 0; j < length - 3; j += 4) { \

  1066.         uint64_t v = AV_RN64A(srcPtr2 + j); \

  1067.         AV_WN64A(dstPtr2 + j, v << shift); \

  1068.     } \

  1069.     length &= 3;

  1070. #else

  1071. #define FAST_COPY_UP(shift) \

  1072.     for (j = 0; j < length - 1; j += 2) { \

  1073.         uint32_t v = AV_RN32A(srcPtr2 + j); \

  1074.         AV_WN32A(dstPtr2 + j, v << shift); \

  1075.     } \

  1076.     length &= 1;

  1077. #endif

  1078.                              switch (shift)

  1079.                              {

  1080.                              case 6: FAST_COPY_UP(6); break;

  1081.                              case 7: FAST_COPY_UP(7); break;

  1082.                              }

  1083.                         }

  1084. #define COPY_UP(r,w) \

  1085.     if(shiftonly){\

  1086.         for (j = 0; j < length; j++){ \

  1087.             unsigned int v= r(&srcPtr2[j]);\

  1088.             w(&dstPtr2[j], v<<(dst_depth-src_depth));\

  1089.         }\

  1090.     }else{\

  1091.         for (j = 0; j < length; j++){ \

  1092.             unsigned int v= r(&srcPtr2[j]);\

  1093.             w(&dstPtr2[j], (v<<(dst_depth-src_depth)) | \

  1094.                         (v>>(2*src_depth-dst_depth)));\

  1095.         }\

  1096.     }

  1097.                         if(isBE(c->srcFormat)){

  1098.                             if(isBE(c->dstFormat)){

  1099.                                 COPY_UP(AV_RB16, AV_WB16)

  1100.                             } else {

  1101.                                 COPY_UP(AV_RB16, AV_WL16)

  1102.                             }

  1103.                         } else {

  1104.                             if(isBE(c->dstFormat)){

  1105.                                 COPY_UP(AV_RL16, AV_WB16)

  1106.                             } else {

  1107.                                 COPY_UP(AV_RL16, AV_WL16)

  1108.                             }

  1109.                         }

  1110.                         dstPtr2 += dstStride[plane]/2;

  1111.                         srcPtr2 += srcStride[plane]/2;

  1112.                     }

  1113.                 } else {

  1114.                     if(isBE(c->srcFormat) == HAVE_BIGENDIAN){

  1115.                         if(isBE(c->dstFormat) == HAVE_BIGENDIAN){

  1116.                             DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, , )

  1117.                         } else {

  1118.                             DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, , av_bswap16)

  1119.                         }

  1120.                     }else{

  1121.                         if(isBE(c->dstFormat) == HAVE_BIGENDIAN){

  1122.                             DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, av_bswap16, )

  1123.                         } else {

  1124.                             DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, av_bswap16, av_bswap16)

  1125.                         }

  1126.                     }

  1127.                 }

  1128.             } else if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat) &&

  1129.                       isBE(c->srcFormat) != isBE(c->dstFormat)) {

  1130. 

  1131.                 for (i = 0; i < height; i++) {

  1132.                     for (j = 0; j < length; j++)

  1133.                         ((uint16_t *) dstPtr)[j] = av_bswap16(((const uint16_t *) srcPtr)[j]);

  1134.                     srcPtr += srcStride[plane];

  1135.                     dstPtr += dstStride[plane];

  1136.                 }

  1137.             } else if (dstStride[plane] == srcStride[plane] &&

  1138.                        srcStride[plane] > 0 && srcStride[plane] == length) {

  1139.                 memcpy(dst[plane] + dstStride[plane] * y, src[plane],

  1140.                        height * dstStride[plane]);

  1141.             } else {

  1142.                 if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat))

  1143.                     length *= 2;

  1144.                 else if (!desc_src->comp[0].depth_minus1)

  1145.                     length >>= 3; // monowhite/black

  1146.                 for (i = 0; i < height; i++) {

  1147.                     memcpy(dstPtr, srcPtr, length);

  1148.                     srcPtr += srcStride[plane];

  1149.                     dstPtr += dstStride[plane];

  1150.                 }

  1151.             }

  1152.         }

  1153.     }

  1154.     return srcSliceH;

  1155. }

  1156. 

  1157. 

  1158. #define IS_DIFFERENT_ENDIANESS(src_fmt, dst_fmt, pix_fmt)          \

  1159.     ((src_fmt == pix_fmt ## BE && dst_fmt == pix_fmt ## LE) ||     \

  1160.      (src_fmt == pix_fmt ## LE && dst_fmt == pix_fmt ## BE))

  1161. 

  1162. 

  1163. void ff_get_unscaled_swscale(SwsContext *c)

  1164. {

  1165.     const enum AVPixelFormat srcFormat = c->srcFormat;

  1166.     const enum AVPixelFormat dstFormat = c->dstFormat;

  1167.     const int flags = c->flags;

  1168.     const int dstH = c->dstH;

  1169.     int needsDither;

  1170. 

  1171.     needsDither = isAnyRGB(dstFormat) &&

  1172.             c->dstFormatBpp < 24 &&

  1173.            (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));

  1174. 

  1175.     /* yv12_to_nv12 */

  1176.     if ((srcFormat == AV_PIX_FMT_YUV420P || srcFormat == AV_PIX_FMT_YUVA420P) &&

  1177.         (dstFormat == AV_PIX_FMT_NV12 || dstFormat == AV_PIX_FMT_NV21)) {

  1178.         c->swScale = planarToNv12Wrapper;

  1179.     }

  1180.     /* yuv2bgr */

  1181.     if ((srcFormat == AV_PIX_FMT_YUV420P || srcFormat == AV_PIX_FMT_YUV422P ||

  1182.          srcFormat == AV_PIX_FMT_YUVA420P) && isAnyRGB(dstFormat) &&

  1183.         !(flags & (SWS_ACCURATE_RND|SWS_ERROR_DIFFUSION)) && !(dstH & 1)) {

  1184.         c->swScale = ff_yuv2rgb_get_func_ptr(c);

  1185.     }

  1186. 

  1187.     if (srcFormat == AV_PIX_FMT_YUV410P &&

  1188.         (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P) &&

  1189.         !(flags & SWS_BITEXACT)) {

  1190.         c->swScale = yvu9ToYv12Wrapper;

  1191.     }

  1192. 

  1193.     /* bgr24toYV12 */

  1194.     if (srcFormat == AV_PIX_FMT_BGR24 &&

  1195.         (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P) &&

  1196.         !(flags & SWS_ACCURATE_RND))

  1197.         c->swScale = bgr24ToYv12Wrapper;

  1198. 

  1199.     /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  1200.     if (isAnyRGB(srcFormat) && isAnyRGB(dstFormat) && findRgbConvFn(c)

  1201.         && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  1202.         c->swScale= rgbToRgbWrapper;

  1203. 

  1204.     if ((srcFormat == AV_PIX_FMT_GBRP && dstFormat == AV_PIX_FMT_GBRAP) ||

  1205.         (srcFormat == AV_PIX_FMT_GBRAP && dstFormat == AV_PIX_FMT_GBRP))

  1206.         c->swScale = planarRgbToplanarRgbWrapper;

  1207. 

  1208. #define isByteRGB(f) (             \

  1209.         f == AV_PIX_FMT_RGB32   || \

  1210.         f == AV_PIX_FMT_RGB32_1 || \

  1211.         f == AV_PIX_FMT_RGB24   || \

  1212.         f == AV_PIX_FMT_BGR32   || \

  1213.         f == AV_PIX_FMT_BGR32_1 || \

  1214.         f == AV_PIX_FMT_BGR24)

  1215. 

  1216.     if (srcFormat == AV_PIX_FMT_GBRP && isPlanar(srcFormat) && isByteRGB(dstFormat))

  1217.         c->swScale = planarRgbToRgbWrapper;

  1218. 

  1219.     if ((srcFormat == AV_PIX_FMT_GBRP9LE  || srcFormat == AV_PIX_FMT_GBRP9BE  ||

  1220.          srcFormat == AV_PIX_FMT_GBRP16LE || srcFormat == AV_PIX_FMT_GBRP16BE ||

  1221.          srcFormat == AV_PIX_FMT_GBRP10LE || srcFormat == AV_PIX_FMT_GBRP10BE ||

  1222.          srcFormat == AV_PIX_FMT_GBRP12LE || srcFormat == AV_PIX_FMT_GBRP12BE ||

  1223.          srcFormat == AV_PIX_FMT_GBRP14LE || srcFormat == AV_PIX_FMT_GBRP14BE) &&

  1224.         (dstFormat == AV_PIX_FMT_RGB48LE  || dstFormat == AV_PIX_FMT_RGB48BE  ||

  1225.          dstFormat == AV_PIX_FMT_BGR48LE  || dstFormat == AV_PIX_FMT_BGR48BE  ||

  1226.          dstFormat == AV_PIX_FMT_RGBA64LE || dstFormat == AV_PIX_FMT_RGBA64BE ||

  1227.          dstFormat == AV_PIX_FMT_BGRA64LE || dstFormat == AV_PIX_FMT_BGRA64BE))

  1228.         c->swScale = planarRgb16ToRgb16Wrapper;

  1229. 

  1230.     if (av_pix_fmt_desc_get(srcFormat)->comp[0].depth_minus1 == 7 &&

  1231.         isPackedRGB(srcFormat) && dstFormat == AV_PIX_FMT_GBRP)

  1232.         c->swScale = rgbToPlanarRgbWrapper;

  1233. 

  1234.     /* bswap 16 bits per pixel/component packed formats */

  1235.     if (IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR444) ||

  1236.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR48)  ||

  1237.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGRA64) ||

  1238.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR555) ||

  1239.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_BGR565) ||

  1240.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_GRAY16) ||

  1241.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_GBRP9)  ||

  1242.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_GBRP10) ||

  1243.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_GBRP12) ||

  1244.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_GBRP14) ||

  1245.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_GBRP16) ||

  1246.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_GBRAP16) ||

  1247.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB444) ||

  1248.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB48)  ||

  1249.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGBA64) ||

  1250.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB555) ||

  1251.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_RGB565) ||

  1252.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_XYZ12)  ||

  1253.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV420P9)  ||

  1254.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV420P10) ||

  1255.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV420P12) ||

  1256.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV420P14) ||

  1257.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV420P16) ||

  1258.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV422P9)  ||

  1259.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV422P10) ||

  1260.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV422P12) ||

  1261.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV422P14) ||

  1262.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV422P16) ||

  1263.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV444P9)  ||

  1264.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV444P10) ||

  1265.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV444P12) ||

  1266.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV444P14) ||

  1267.         IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, AV_PIX_FMT_YUV444P16))

  1268.         c->swScale = packed_16bpc_bswap;

  1269. 

  1270.     if (usePal(srcFormat) && isByteRGB(dstFormat))

  1271.         c->swScale = palToRgbWrapper;

  1272. 

  1273.     if (srcFormat == AV_PIX_FMT_YUV422P) {

  1274.         if (dstFormat == AV_PIX_FMT_YUYV422)

  1275.             c->swScale = yuv422pToYuy2Wrapper;

  1276.         else if (dstFormat == AV_PIX_FMT_UYVY422)

  1277.             c->swScale = yuv422pToUyvyWrapper;

  1278.     }

  1279. 

  1280.     /* LQ converters if -sws 0 or -sws 4*/

  1281.     if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {

  1282.         /* yv12_to_yuy2 */

  1283.         if (srcFormat == AV_PIX_FMT_YUV420P || srcFormat == AV_PIX_FMT_YUVA420P) {

  1284.             if (dstFormat == AV_PIX_FMT_YUYV422)

  1285.                 c->swScale = planarToYuy2Wrapper;

  1286.             else if (dstFormat == AV_PIX_FMT_UYVY422)

  1287.                 c->swScale = planarToUyvyWrapper;

  1288.         }

  1289.     }

  1290.     if (srcFormat == AV_PIX_FMT_YUYV422 &&

  1291.        (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P))

  1292.         c->swScale = yuyvToYuv420Wrapper;

  1293.     if (srcFormat == AV_PIX_FMT_UYVY422 &&

  1294.        (dstFormat == AV_PIX_FMT_YUV420P || dstFormat == AV_PIX_FMT_YUVA420P))

  1295.         c->swScale = uyvyToYuv420Wrapper;

  1296.     if (srcFormat == AV_PIX_FMT_YUYV422 && dstFormat == AV_PIX_FMT_YUV422P)

  1297.         c->swScale = yuyvToYuv422Wrapper;

  1298.     if (srcFormat == AV_PIX_FMT_UYVY422 && dstFormat == AV_PIX_FMT_YUV422P)

  1299.         c->swScale = uyvyToYuv422Wrapper;

  1300. 

  1301. #define isPlanarGray(x) (isGray(x) && (x) != AV_PIX_FMT_GRAY8A)

  1302.     /* simple copy */

  1303.     if ( srcFormat == dstFormat ||

  1304.         (srcFormat == AV_PIX_FMT_YUVA420P && dstFormat == AV_PIX_FMT_YUV420P) ||

  1305.         (srcFormat == AV_PIX_FMT_YUV420P && dstFormat == AV_PIX_FMT_YUVA420P) ||

  1306.         (isPlanarYUV(srcFormat) && isPlanarGray(dstFormat)) ||

  1307.         (isPlanarYUV(dstFormat) && isPlanarGray(srcFormat)) ||

  1308.         (isPlanarGray(dstFormat) && isPlanarGray(srcFormat)) ||

  1309.         (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat) &&

  1310.          c->chrDstHSubSample == c->chrSrcHSubSample &&

  1311.          c->chrDstVSubSample == c->chrSrcVSubSample &&

  1312.          dstFormat != AV_PIX_FMT_NV12 && dstFormat != AV_PIX_FMT_NV21 &&

  1313.          srcFormat != AV_PIX_FMT_NV12 && srcFormat != AV_PIX_FMT_NV21))

  1314.     {

  1315.         if (isPacked(c->srcFormat))

  1316.             c->swScale = packedCopyWrapper;

  1317.         else /* Planar YUV or gray */

  1318.             c->swScale = planarCopyWrapper;

  1319.     }

  1320. 

  1321.     if (ARCH_BFIN)

  1322.         ff_bfin_get_unscaled_swscale(c);

  1323.     if (HAVE_ALTIVEC)

  1324.         ff_swscale_get_unscaled_altivec(c);

  1325. }

  1326. 

  1327. /* Convert the palette to the same packed 32-bit format as the palette */

  1328. void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst,

  1329.                                    int num_pixels, const uint8_t *palette)

  1330. {

  1331.     int i;

  1332. 

  1333.     for (i = 0; i < num_pixels; i++)

  1334.         ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];

  1335. }

  1336. 

  1337. /* Palette format: ABCD -> dst format: ABC */

  1338. void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst,

  1339.                                    int num_pixels, const uint8_t *palette)

  1340. {

  1341.     int i;

  1342. 

  1343.     for (i = 0; i < num_pixels; i++) {

  1344.         //FIXME slow?

  1345.         dst[0] = palette[src[i] * 4 + 0];

  1346.         dst[1] = palette[src[i] * 4 + 1];

  1347.         dst[2] = palette[src[i] * 4 + 2];

  1348.         dst += 3;

  1349.     }

  1350. }