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FFmpeg/libswscale/swscale.c

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  1. /*

  2.  * Copyright (C) 2001-2003 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. /*

  22.   supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR32_1, BGR24, BGR16, BGR15, RGB32, RGB32_1, RGB24, Y8/Y800, YVU9/IF09, PAL8

  23.   supported output formats: YV12, I420/IYUV, YUY2, UYVY, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09

  24.   {BGR,RGB}{1,4,8,15,16} support dithering

  25. 

  26.   unscaled special converters (YV12=I420=IYUV, Y800=Y8)

  27.   YV12 -> {BGR,RGB}{1,4,8,12,15,16,24,32}

  28.   x -> x

  29.   YUV9 -> YV12

  30.   YUV9/YV12 -> Y800

  31.   Y800 -> YUV9/YV12

  32.   BGR24 -> BGR32 & RGB24 -> RGB32

  33.   BGR32 -> BGR24 & RGB32 -> RGB24

  34.   BGR15 -> BGR16

  35. */

  36. 

  37. /*

  38. tested special converters (most are tested actually, but I did not write it down ...)

  39.  YV12 -> BGR12/BGR16

  40.  YV12 -> YV12

  41.  BGR15 -> BGR16

  42.  BGR16 -> BGR16

  43.  YVU9 -> YV12

  44. 

  45. untested special converters

  46.   YV12/I420 -> BGR15/BGR24/BGR32 (it is the yuv2rgb stuff, so it should be OK)

  47.   YV12/I420 -> YV12/I420

  48.   YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format

  49.   BGR24 -> BGR32 & RGB24 -> RGB32

  50.   BGR32 -> BGR24 & RGB32 -> RGB24

  51.   BGR24 -> YV12

  52. */

  53. 

  54. #include <inttypes.h>

  55. #include <string.h>

  56. #include <math.h>

  57. #include <stdio.h>

  58. #include "config.h"

  59. #include <assert.h>

  60. #include "swscale.h"

  61. #include "swscale_internal.h"

  62. #include "rgb2rgb.h"

  63. #include "libavutil/intreadwrite.h"

  64. #include "libavutil/x86_cpu.h"

  65. #include "libavutil/avutil.h"

  66. #include "libavutil/mathematics.h"

  67. #include "libavutil/bswap.h"

  68. #include "libavutil/pixdesc.h"

  69. 

  70. #undef MOVNTQ

  71. #undef PAVGB

  72. 

  73. //#undef HAVE_MMX2

  74. //#define HAVE_AMD3DNOW

  75. //#undef HAVE_MMX

  76. //#undef ARCH_X86

  77. #define DITHER1XBPP

  78. 

  79. #define FAST_BGR2YV12 // use 7 bit coefficients instead of 15 bit

  80. 

  81. #define isPacked(x)         (       \

  82.            (x)==PIX_FMT_PAL8        \

  83.         || (x)==PIX_FMT_YUYV422     \

  84.         || (x)==PIX_FMT_UYVY422     \

  85.         || (x)==PIX_FMT_Y400A       \

  86.         || isAnyRGB(x)              \

  87.     )

  88. 

  89. #define RGB2YUV_SHIFT 15

  90. #define BY ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5))

  91. #define BV (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  92. #define BU ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  93. #define GY ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5))

  94. #define GV (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  95. #define GU (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  96. #define RY ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5))

  97. #define RV ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  98. #define RU (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  99. 

  100. static const double rgb2yuv_table[8][9]={

  101.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5}, //ITU709

  102.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5}, //ITU709

  103.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M

  104.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M

  105.     {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC

  106.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M

  107.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M

  108.     {0.701 , 0.087 , 0.212 , -0.384, 0.5, -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M

  109. };

  110. 

  111. /*

  112. NOTES

  113. Special versions: fast Y 1:1 scaling (no interpolation in y direction)

  114. 

  115. TODO

  116. more intelligent misalignment avoidance for the horizontal scaler

  117. write special vertical cubic upscale version

  118. optimize C code (YV12 / minmax)

  119. add support for packed pixel YUV input & output

  120. add support for Y8 output

  121. optimize BGR24 & BGR32

  122. add BGR4 output support

  123. write special BGR->BGR scaler

  124. */

  125. 

  126. #if ARCH_X86

  127. DECLARE_ASM_CONST(8, uint64_t, bF8)=       0xF8F8F8F8F8F8F8F8LL;

  128. DECLARE_ASM_CONST(8, uint64_t, bFC)=       0xFCFCFCFCFCFCFCFCLL;

  129. DECLARE_ASM_CONST(8, uint64_t, w10)=       0x0010001000100010LL;

  130. DECLARE_ASM_CONST(8, uint64_t, w02)=       0x0002000200020002LL;

  131. DECLARE_ASM_CONST(8, uint64_t, bm00001111)=0x00000000FFFFFFFFLL;

  132. DECLARE_ASM_CONST(8, uint64_t, bm00000111)=0x0000000000FFFFFFLL;

  133. DECLARE_ASM_CONST(8, uint64_t, bm11111000)=0xFFFFFFFFFF000000LL;

  134. DECLARE_ASM_CONST(8, uint64_t, bm01010101)=0x00FF00FF00FF00FFLL;

  135. 

  136. const DECLARE_ALIGNED(8, uint64_t, ff_dither4)[2] = {

  137.         0x0103010301030103LL,

  138.         0x0200020002000200LL,};

  139. 

  140. const DECLARE_ALIGNED(8, uint64_t, ff_dither8)[2] = {

  141.         0x0602060206020602LL,

  142.         0x0004000400040004LL,};

  143. 

  144. DECLARE_ASM_CONST(8, uint64_t, b16Mask)=   0x001F001F001F001FLL;

  145. DECLARE_ASM_CONST(8, uint64_t, g16Mask)=   0x07E007E007E007E0LL;

  146. DECLARE_ASM_CONST(8, uint64_t, r16Mask)=   0xF800F800F800F800LL;

  147. DECLARE_ASM_CONST(8, uint64_t, b15Mask)=   0x001F001F001F001FLL;

  148. DECLARE_ASM_CONST(8, uint64_t, g15Mask)=   0x03E003E003E003E0LL;

  149. DECLARE_ASM_CONST(8, uint64_t, r15Mask)=   0x7C007C007C007C00LL;

  150. 

  151. DECLARE_ALIGNED(8, const uint64_t, ff_M24A)         = 0x00FF0000FF0000FFLL;

  152. DECLARE_ALIGNED(8, const uint64_t, ff_M24B)         = 0xFF0000FF0000FF00LL;

  153. DECLARE_ALIGNED(8, const uint64_t, ff_M24C)         = 0x0000FF0000FF0000LL;

  154. 

  155. #ifdef FAST_BGR2YV12

  156. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff)   = 0x000000210041000DULL;

  157. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff)   = 0x0000FFEEFFDC0038ULL;

  158. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff)   = 0x00000038FFD2FFF8ULL;

  159. #else

  160. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff)   = 0x000020E540830C8BULL;

  161. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff)   = 0x0000ED0FDAC23831ULL;

  162. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff)   = 0x00003831D0E6F6EAULL;

  163. #endif /* FAST_BGR2YV12 */

  164. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YOffset)  = 0x1010101010101010ULL;

  165. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UVOffset) = 0x8080808080808080ULL;

  166. DECLARE_ALIGNED(8, const uint64_t, ff_w1111)        = 0x0001000100010001ULL;

  167. 

  168. DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY1Coeff) = 0x0C88000040870C88ULL;

  169. DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY2Coeff) = 0x20DE4087000020DEULL;

  170. DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY1Coeff) = 0x20DE0000408720DEULL;

  171. DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY2Coeff) = 0x0C88408700000C88ULL;

  172. DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toYOffset) = 0x0008400000084000ULL;

  173. 

  174. DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUV)[2][4] = {

  175.     {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},

  176.     {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},

  177. };

  178. 

  179. DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUVOffset)= 0x0040400000404000ULL;

  180. 

  181. #endif /* ARCH_X86 */

  182. 

  183. DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_4)[2][8]={

  184. {  1,   3,   1,   3,   1,   3,   1,   3, },

  185. {  2,   0,   2,   0,   2,   0,   2,   0, },

  186. };

  187. 

  188. DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_8)[2][8]={

  189. {  6,   2,   6,   2,   6,   2,   6,   2, },

  190. {  0,   4,   0,   4,   0,   4,   0,   4, },

  191. };

  192. 

  193. DECLARE_ALIGNED(8, const uint8_t, dither_4x4_16)[4][8]={

  194. {  8,   4,  11,   7,   8,   4,  11,   7, },

  195. {  2,  14,   1,  13,   2,  14,   1,  13, },

  196. { 10,   6,   9,   5,  10,   6,   9,   5, },

  197. {  0,  12,   3,  15,   0,  12,   3,  15, },

  198. };

  199. 

  200. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_32)[8][8]={

  201. { 17,   9,  23,  15,  16,   8,  22,  14, },

  202. {  5,  29,   3,  27,   4,  28,   2,  26, },

  203. { 21,  13,  19,  11,  20,  12,  18,  10, },

  204. {  0,  24,   6,  30,   1,  25,   7,  31, },

  205. { 16,   8,  22,  14,  17,   9,  23,  15, },

  206. {  4,  28,   2,  26,   5,  29,   3,  27, },

  207. { 20,  12,  18,  10,  21,  13,  19,  11, },

  208. {  1,  25,   7,  31,   0,  24,   6,  30, },

  209. };

  210. 

  211. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_73)[8][8]={

  212. {  0,  55,  14,  68,   3,  58,  17,  72, },

  213. { 37,  18,  50,  32,  40,  22,  54,  35, },

  214. {  9,  64,   5,  59,  13,  67,   8,  63, },

  215. { 46,  27,  41,  23,  49,  31,  44,  26, },

  216. {  2,  57,  16,  71,   1,  56,  15,  70, },

  217. { 39,  21,  52,  34,  38,  19,  51,  33, },

  218. { 11,  66,   7,  62,  10,  65,   6,  60, },

  219. { 48,  30,  43,  25,  47,  29,  42,  24, },

  220. };

  221. 

  222. #if 1

  223. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={

  224. {117,  62, 158, 103, 113,  58, 155, 100, },

  225. { 34, 199,  21, 186,  31, 196,  17, 182, },

  226. {144,  89, 131,  76, 141,  86, 127,  72, },

  227. {  0, 165,  41, 206,  10, 175,  52, 217, },

  228. {110,  55, 151,  96, 120,  65, 162, 107, },

  229. { 28, 193,  14, 179,  38, 203,  24, 189, },

  230. {138,  83, 124,  69, 148,  93, 134,  79, },

  231. {  7, 172,  48, 213,   3, 168,  45, 210, },

  232. };

  233. #elif 1

  234. // tries to correct a gamma of 1.5

  235. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={

  236. {  0, 143,  18, 200,   2, 156,  25, 215, },

  237. { 78,  28, 125,  64,  89,  36, 138,  74, },

  238. { 10, 180,   3, 161,  16, 195,   8, 175, },

  239. {109,  51,  93,  38, 121,  60, 105,  47, },

  240. {  1, 152,  23, 210,   0, 147,  20, 205, },

  241. { 85,  33, 134,  71,  81,  30, 130,  67, },

  242. { 14, 190,   6, 171,  12, 185,   5, 166, },

  243. {117,  57, 101,  44, 113,  54,  97,  41, },

  244. };

  245. #elif 1

  246. // tries to correct a gamma of 2.0

  247. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={

  248. {  0, 124,   8, 193,   0, 140,  12, 213, },

  249. { 55,  14, 104,  42,  66,  19, 119,  52, },

  250. {  3, 168,   1, 145,   6, 187,   3, 162, },

  251. { 86,  31,  70,  21,  99,  39,  82,  28, },

  252. {  0, 134,  11, 206,   0, 129,   9, 200, },

  253. { 62,  17, 114,  48,  58,  16, 109,  45, },

  254. {  5, 181,   2, 157,   4, 175,   1, 151, },

  255. { 95,  36,  78,  26,  90,  34,  74,  24, },

  256. };

  257. #else

  258. // tries to correct a gamma of 2.5

  259. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={

  260. {  0, 107,   3, 187,   0, 125,   6, 212, },

  261. { 39,   7,  86,  28,  49,  11, 102,  36, },

  262. {  1, 158,   0, 131,   3, 180,   1, 151, },

  263. { 68,  19,  52,  12,  81,  25,  64,  17, },

  264. {  0, 119,   5, 203,   0, 113,   4, 195, },

  265. { 45,   9,  96,  33,  42,   8,  91,  30, },

  266. {  2, 172,   1, 144,   2, 165,   0, 137, },

  267. { 77,  23,  60,  15,  72,  21,  56,  14, },

  268. };

  269. #endif

  270. 

  271. static av_always_inline void yuv2yuvX16inC_template(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  272.                                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  273.                                                     const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest,

  274.                                                     int dstW, int chrDstW, int big_endian)

  275. {

  276.     //FIXME Optimize (just quickly written not optimized..)

  277.     int i;

  278. 

  279.     for (i = 0; i < dstW; i++) {

  280.         int val = 1 << 10;

  281.         int j;

  282. 

  283.         for (j = 0; j < lumFilterSize; j++)

  284.             val += lumSrc[j][i] * lumFilter[j];

  285. 

  286.         if (big_endian) {

  287.             AV_WB16(&dest[i], av_clip_uint16(val >> 11));

  288.         } else {

  289.             AV_WL16(&dest[i], av_clip_uint16(val >> 11));

  290.         }

  291.     }

  292. 

  293.     if (uDest) {

  294.         for (i = 0; i < chrDstW; i++) {

  295.             int u = 1 << 10;

  296.             int v = 1 << 10;

  297.             int j;

  298. 

  299.             for (j = 0; j < chrFilterSize; j++) {

  300.                 u += chrSrc[j][i       ] * chrFilter[j];

  301.                 v += chrSrc[j][i + VOFW] * chrFilter[j];

  302.             }

  303. 

  304.             if (big_endian) {

  305.                 AV_WB16(&uDest[i], av_clip_uint16(u >> 11));

  306.                 AV_WB16(&vDest[i], av_clip_uint16(v >> 11));

  307.             } else {

  308.                 AV_WL16(&uDest[i], av_clip_uint16(u >> 11));

  309.                 AV_WL16(&vDest[i], av_clip_uint16(v >> 11));

  310.             }

  311.         }

  312.     }

  313. 

  314.     if (CONFIG_SWSCALE_ALPHA && aDest) {

  315.         for (i = 0; i < dstW; i++) {

  316.             int val = 1 << 10;

  317.             int j;

  318. 

  319.             for (j = 0; j < lumFilterSize; j++)

  320.                 val += alpSrc[j][i] * lumFilter[j];

  321. 

  322.             if (big_endian) {

  323.                 AV_WB16(&aDest[i], av_clip_uint16(val >> 11));

  324.             } else {

  325.                 AV_WL16(&aDest[i], av_clip_uint16(val >> 11));

  326.             }

  327.         }

  328.     }

  329. }

  330. 

  331. static inline void yuv2yuvX16inC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  332.                                  const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  333.                                  const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest, int dstW, int chrDstW,

  334.                                  enum PixelFormat dstFormat)

  335. {

  336.     if (isBE(dstFormat)) {

  337.         yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,

  338.                                chrFilter, chrSrc, chrFilterSize,

  339.                                alpSrc,

  340.                                dest, uDest, vDest, aDest,

  341.                                dstW, chrDstW, 1);

  342.     } else {

  343.         yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,

  344.                                chrFilter, chrSrc, chrFilterSize,

  345.                                alpSrc,

  346.                                dest, uDest, vDest, aDest,

  347.                                dstW, chrDstW, 0);

  348.     }

  349. }

  350. 

  351. static inline void yuv2yuvXinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  352.                                const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  353.                                const int16_t **alpSrc, uint8_t *dest, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, int dstW, int chrDstW)

  354. {

  355.     //FIXME Optimize (just quickly written not optimized..)

  356.     int i;

  357.     for (i=0; i<dstW; i++) {

  358.         int val=1<<18;

  359.         int j;

  360.         for (j=0; j<lumFilterSize; j++)

  361.             val += lumSrc[j][i] * lumFilter[j];

  362. 

  363.         dest[i]= av_clip_uint8(val>>19);

  364.     }

  365. 

  366.     if (uDest)

  367.         for (i=0; i<chrDstW; i++) {

  368.             int u=1<<18;

  369.             int v=1<<18;

  370.             int j;

  371.             for (j=0; j<chrFilterSize; j++) {

  372.                 u += chrSrc[j][i] * chrFilter[j];

  373.                 v += chrSrc[j][i + VOFW] * chrFilter[j];

  374.             }

  375. 

  376.             uDest[i]= av_clip_uint8(u>>19);

  377.             vDest[i]= av_clip_uint8(v>>19);

  378.         }

  379. 

  380.     if (CONFIG_SWSCALE_ALPHA && aDest)

  381.         for (i=0; i<dstW; i++) {

  382.             int val=1<<18;

  383.             int j;

  384.             for (j=0; j<lumFilterSize; j++)

  385.                 val += alpSrc[j][i] * lumFilter[j];

  386. 

  387.             aDest[i]= av_clip_uint8(val>>19);

  388.         }

  389. 

  390. }

  391. 

  392. static inline void yuv2nv12XinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  393.                                 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  394.                                 uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, int dstFormat)

  395. {

  396.     //FIXME Optimize (just quickly written not optimized..)

  397.     int i;

  398.     for (i=0; i<dstW; i++) {

  399.         int val=1<<18;

  400.         int j;

  401.         for (j=0; j<lumFilterSize; j++)

  402.             val += lumSrc[j][i] * lumFilter[j];

  403. 

  404.         dest[i]= av_clip_uint8(val>>19);

  405.     }

  406. 

  407.     if (!uDest)

  408.         return;

  409. 

  410.     if (dstFormat == PIX_FMT_NV12)

  411.         for (i=0; i<chrDstW; i++) {

  412.             int u=1<<18;

  413.             int v=1<<18;

  414.             int j;

  415.             for (j=0; j<chrFilterSize; j++) {

  416.                 u += chrSrc[j][i] * chrFilter[j];

  417.                 v += chrSrc[j][i + VOFW] * chrFilter[j];

  418.             }

  419. 

  420.             uDest[2*i]= av_clip_uint8(u>>19);

  421.             uDest[2*i+1]= av_clip_uint8(v>>19);

  422.         }

  423.     else

  424.         for (i=0; i<chrDstW; i++) {

  425.             int u=1<<18;

  426.             int v=1<<18;

  427.             int j;

  428.             for (j=0; j<chrFilterSize; j++) {

  429.                 u += chrSrc[j][i] * chrFilter[j];

  430.                 v += chrSrc[j][i + VOFW] * chrFilter[j];

  431.             }

  432. 

  433.             uDest[2*i]= av_clip_uint8(v>>19);

  434.             uDest[2*i+1]= av_clip_uint8(u>>19);

  435.         }

  436. }

  437. 

  438. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \

  439.     for (i=0; i<(dstW>>1); i++) {\

  440.         int j;\

  441.         int Y1 = 1<<18;\

  442.         int Y2 = 1<<18;\

  443.         int U  = 1<<18;\

  444.         int V  = 1<<18;\

  445.         int av_unused A1, A2;\

  446.         type av_unused *r, *b, *g;\

  447.         const int i2= 2*i;\

  448.         \

  449.         for (j=0; j<lumFilterSize; j++) {\

  450.             Y1 += lumSrc[j][i2] * lumFilter[j];\

  451.             Y2 += lumSrc[j][i2+1] * lumFilter[j];\

  452.         }\

  453.         for (j=0; j<chrFilterSize; j++) {\

  454.             U += chrSrc[j][i] * chrFilter[j];\

  455.             V += chrSrc[j][i+VOFW] * chrFilter[j];\

  456.         }\

  457.         Y1>>=19;\

  458.         Y2>>=19;\

  459.         U >>=19;\

  460.         V >>=19;\

  461.         if (alpha) {\

  462.             A1 = 1<<18;\

  463.             A2 = 1<<18;\

  464.             for (j=0; j<lumFilterSize; j++) {\

  465.                 A1 += alpSrc[j][i2  ] * lumFilter[j];\

  466.                 A2 += alpSrc[j][i2+1] * lumFilter[j];\

  467.             }\

  468.             A1>>=19;\

  469.             A2>>=19;\

  470.         }

  471. 

  472. #define YSCALE_YUV_2_PACKEDX_C(type,alpha) \

  473.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\

  474.         if ((Y1|Y2|U|V)&256) {\

  475.             if (Y1>255)   Y1=255; \

  476.             else if (Y1<0)Y1=0;   \

  477.             if (Y2>255)   Y2=255; \

  478.             else if (Y2<0)Y2=0;   \

  479.             if (U>255)    U=255;  \

  480.             else if (U<0) U=0;    \

  481.             if (V>255)    V=255;  \

  482.             else if (V<0) V=0;    \

  483.         }\

  484.         if (alpha && ((A1|A2)&256)) {\

  485.             A1=av_clip_uint8(A1);\

  486.             A2=av_clip_uint8(A2);\

  487.         }

  488. 

  489. #define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \

  490.     for (i=0; i<dstW; i++) {\

  491.         int j;\

  492.         int Y = 0;\

  493.         int U = -128<<19;\

  494.         int V = -128<<19;\

  495.         int av_unused A;\

  496.         int R,G,B;\

  497.         \

  498.         for (j=0; j<lumFilterSize; j++) {\

  499.             Y += lumSrc[j][i     ] * lumFilter[j];\

  500.         }\

  501.         for (j=0; j<chrFilterSize; j++) {\

  502.             U += chrSrc[j][i     ] * chrFilter[j];\

  503.             V += chrSrc[j][i+VOFW] * chrFilter[j];\

  504.         }\

  505.         Y >>=10;\

  506.         U >>=10;\

  507.         V >>=10;\

  508.         if (alpha) {\

  509.             A = rnd;\

  510.             for (j=0; j<lumFilterSize; j++)\

  511.                 A += alpSrc[j][i     ] * lumFilter[j];\

  512.             A >>=19;\

  513.             if (A&256)\

  514.                 A = av_clip_uint8(A);\

  515.         }

  516. 

  517. #define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \

  518.     YSCALE_YUV_2_PACKEDX_FULL_C(rnd>>3,alpha)\

  519.         Y-= c->yuv2rgb_y_offset;\

  520.         Y*= c->yuv2rgb_y_coeff;\

  521.         Y+= rnd;\

  522.         R= Y + V*c->yuv2rgb_v2r_coeff;\

  523.         G= Y + V*c->yuv2rgb_v2g_coeff + U*c->yuv2rgb_u2g_coeff;\

  524.         B= Y +                          U*c->yuv2rgb_u2b_coeff;\

  525.         if ((R|G|B)&(0xC0000000)) {\

  526.             if (R>=(256<<22))   R=(256<<22)-1; \

  527.             else if (R<0)R=0;   \

  528.             if (G>=(256<<22))   G=(256<<22)-1; \

  529.             else if (G<0)G=0;   \

  530.             if (B>=(256<<22))   B=(256<<22)-1; \

  531.             else if (B<0)B=0;   \

  532.         }

  533. 

  534. #define YSCALE_YUV_2_GRAY16_C \

  535.     for (i=0; i<(dstW>>1); i++) {\

  536.         int j;\

  537.         int Y1 = 1<<18;\

  538.         int Y2 = 1<<18;\

  539.         int U  = 1<<18;\

  540.         int V  = 1<<18;\

  541.         \

  542.         const int i2= 2*i;\

  543.         \

  544.         for (j=0; j<lumFilterSize; j++) {\

  545.             Y1 += lumSrc[j][i2] * lumFilter[j];\

  546.             Y2 += lumSrc[j][i2+1] * lumFilter[j];\

  547.         }\

  548.         Y1>>=11;\

  549.         Y2>>=11;\

  550.         if ((Y1|Y2|U|V)&65536) {\

  551.             if (Y1>65535)   Y1=65535; \

  552.             else if (Y1<0)Y1=0;   \

  553.             if (Y2>65535)   Y2=65535; \

  554.             else if (Y2<0)Y2=0;   \

  555.         }

  556. 

  557. #define YSCALE_YUV_2_RGBX_C(type,alpha) \

  558.     YSCALE_YUV_2_PACKEDX_C(type,alpha)  /* FIXME fix tables so that clipping is not needed and then use _NOCLIP*/\

  559.     r = (type *)c->table_rV[V];   \

  560.     g = (type *)(c->table_gU[U] + c->table_gV[V]); \

  561.     b = (type *)c->table_bU[U];

  562. 

  563. #define YSCALE_YUV_2_PACKED2_C(type,alpha)   \

  564.     for (i=0; i<(dstW>>1); i++) { \

  565.         const int i2= 2*i;       \

  566.         int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>19;           \

  567.         int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19;           \

  568.         int U= (uvbuf0[i     ]*uvalpha1+uvbuf1[i     ]*uvalpha)>>19;  \

  569.         int V= (uvbuf0[i+VOFW]*uvalpha1+uvbuf1[i+VOFW]*uvalpha)>>19;  \

  570.         type av_unused *r, *b, *g;                                    \

  571.         int av_unused A1, A2;                                         \

  572.         if (alpha) {\

  573.             A1= (abuf0[i2  ]*yalpha1+abuf1[i2  ]*yalpha)>>19;         \

  574.             A2= (abuf0[i2+1]*yalpha1+abuf1[i2+1]*yalpha)>>19;         \

  575.         }

  576. 

  577. #define YSCALE_YUV_2_GRAY16_2_C   \

  578.     for (i=0; i<(dstW>>1); i++) { \

  579.         const int i2= 2*i;       \

  580.         int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>11;           \

  581.         int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>11;

  582. 

  583. #define YSCALE_YUV_2_RGB2_C(type,alpha) \

  584.     YSCALE_YUV_2_PACKED2_C(type,alpha)\

  585.     r = (type *)c->table_rV[V];\

  586.     g = (type *)(c->table_gU[U] + c->table_gV[V]);\

  587.     b = (type *)c->table_bU[U];

  588. 

  589. #define YSCALE_YUV_2_PACKED1_C(type,alpha) \

  590.     for (i=0; i<(dstW>>1); i++) {\

  591.         const int i2= 2*i;\

  592.         int Y1= buf0[i2  ]>>7;\

  593.         int Y2= buf0[i2+1]>>7;\

  594.         int U= (uvbuf1[i     ])>>7;\

  595.         int V= (uvbuf1[i+VOFW])>>7;\

  596.         type av_unused *r, *b, *g;\

  597.         int av_unused A1, A2;\

  598.         if (alpha) {\

  599.             A1= abuf0[i2  ]>>7;\

  600.             A2= abuf0[i2+1]>>7;\

  601.         }

  602. 

  603. #define YSCALE_YUV_2_GRAY16_1_C \

  604.     for (i=0; i<(dstW>>1); i++) {\

  605.         const int i2= 2*i;\

  606.         int Y1= buf0[i2  ]<<1;\

  607.         int Y2= buf0[i2+1]<<1;

  608. 

  609. #define YSCALE_YUV_2_RGB1_C(type,alpha) \

  610.     YSCALE_YUV_2_PACKED1_C(type,alpha)\

  611.     r = (type *)c->table_rV[V];\

  612.     g = (type *)(c->table_gU[U] + c->table_gV[V]);\

  613.     b = (type *)c->table_bU[U];

  614. 

  615. #define YSCALE_YUV_2_PACKED1B_C(type,alpha) \

  616.     for (i=0; i<(dstW>>1); i++) {\

  617.         const int i2= 2*i;\

  618.         int Y1= buf0[i2  ]>>7;\

  619.         int Y2= buf0[i2+1]>>7;\

  620.         int U= (uvbuf0[i     ] + uvbuf1[i     ])>>8;\

  621.         int V= (uvbuf0[i+VOFW] + uvbuf1[i+VOFW])>>8;\

  622.         type av_unused *r, *b, *g;\

  623.         int av_unused A1, A2;\

  624.         if (alpha) {\

  625.             A1= abuf0[i2  ]>>7;\

  626.             A2= abuf0[i2+1]>>7;\

  627.         }

  628. 

  629. #define YSCALE_YUV_2_RGB1B_C(type,alpha) \

  630.     YSCALE_YUV_2_PACKED1B_C(type,alpha)\

  631.     r = (type *)c->table_rV[V];\

  632.     g = (type *)(c->table_gU[U] + c->table_gV[V]);\

  633.     b = (type *)c->table_bU[U];

  634. 

  635. #define YSCALE_YUV_2_MONO2_C \

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

  637.     uint8_t *g= c->table_gU[128] + c->table_gV[128];\

  638.     for (i=0; i<dstW-7; i+=8) {\

  639.         int acc;\

  640.         acc =       g[((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19) + d128[0]];\

  641.         acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\

  642.         acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\

  643.         acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\

  644.         acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\

  645.         acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\

  646.         acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\

  647.         acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\

  648.         ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\

  649.         dest++;\

  650.     }

  651. 

  652. #define YSCALE_YUV_2_MONOX_C \

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

  654.     uint8_t *g= c->table_gU[128] + c->table_gV[128];\

  655.     int acc=0;\

  656.     for (i=0; i<dstW-1; i+=2) {\

  657.         int j;\

  658.         int Y1=1<<18;\

  659.         int Y2=1<<18;\

  660. \

  661.         for (j=0; j<lumFilterSize; j++) {\

  662.             Y1 += lumSrc[j][i] * lumFilter[j];\

  663.             Y2 += lumSrc[j][i+1] * lumFilter[j];\

  664.         }\

  665.         Y1>>=19;\

  666.         Y2>>=19;\

  667.         if ((Y1|Y2)&256) {\

  668.             if (Y1>255)   Y1=255;\

  669.             else if (Y1<0)Y1=0;\

  670.             if (Y2>255)   Y2=255;\

  671.             else if (Y2<0)Y2=0;\

  672.         }\

  673.         acc+= acc + g[Y1+d128[(i+0)&7]];\

  674.         acc+= acc + g[Y2+d128[(i+1)&7]];\

  675.         if ((i&7)==6) {\

  676.             ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\

  677.             dest++;\

  678.         }\

  679.     }

  680. 

  681. #define YSCALE_YUV_2_ANYRGB_C(func, func2, func_g16, func_monoblack)\

  682.     switch(c->dstFormat) {\

  683.     case PIX_FMT_RGB48BE:\

  684.     case PIX_FMT_RGB48LE:\

  685.         func(uint8_t,0)\

  686.             ((uint8_t*)dest)[ 0]= r[Y1];\

  687.             ((uint8_t*)dest)[ 1]= r[Y1];\

  688.             ((uint8_t*)dest)[ 2]= g[Y1];\

  689.             ((uint8_t*)dest)[ 3]= g[Y1];\

  690.             ((uint8_t*)dest)[ 4]= b[Y1];\

  691.             ((uint8_t*)dest)[ 5]= b[Y1];\

  692.             ((uint8_t*)dest)[ 6]= r[Y2];\

  693.             ((uint8_t*)dest)[ 7]= r[Y2];\

  694.             ((uint8_t*)dest)[ 8]= g[Y2];\

  695.             ((uint8_t*)dest)[ 9]= g[Y2];\

  696.             ((uint8_t*)dest)[10]= b[Y2];\

  697.             ((uint8_t*)dest)[11]= b[Y2];\

  698.             dest+=12;\

  699.         }\

  700.         break;\

  701.     case PIX_FMT_RGBA:\

  702.     case PIX_FMT_BGRA:\

  703.         if (CONFIG_SMALL) {\

  704.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;\

  705.             func(uint32_t,needAlpha)\

  706.                 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (needAlpha ? (A1<<24) : 0);\

  707.                 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (needAlpha ? (A2<<24) : 0);\

  708.             }\

  709.         } else {\

  710.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {\

  711.                 func(uint32_t,1)\

  712.                     ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (A1<<24);\

  713.                     ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (A2<<24);\

  714.                 }\

  715.             } else {\

  716.                 func(uint32_t,0)\

  717.                     ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\

  718.                     ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\

  719.                 }\

  720.             }\

  721.         }\

  722.         break;\

  723.     case PIX_FMT_ARGB:\

  724.     case PIX_FMT_ABGR:\

  725.         if (CONFIG_SMALL) {\

  726.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;\

  727.             func(uint32_t,needAlpha)\

  728.                 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (needAlpha ? A1 : 0);\

  729.                 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (needAlpha ? A2 : 0);\

  730.             }\

  731.         } else {\

  732.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {\

  733.                 func(uint32_t,1)\

  734.                     ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + A1;\

  735.                     ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + A2;\

  736.                 }\

  737.             } else {\

  738.                 func(uint32_t,0)\

  739.                     ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\

  740.                     ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\

  741.                 }\

  742.             }\

  743.         }                \

  744.         break;\

  745.     case PIX_FMT_RGB24:\

  746.         func(uint8_t,0)\

  747.             ((uint8_t*)dest)[0]= r[Y1];\

  748.             ((uint8_t*)dest)[1]= g[Y1];\

  749.             ((uint8_t*)dest)[2]= b[Y1];\

  750.             ((uint8_t*)dest)[3]= r[Y2];\

  751.             ((uint8_t*)dest)[4]= g[Y2];\

  752.             ((uint8_t*)dest)[5]= b[Y2];\

  753.             dest+=6;\

  754.         }\

  755.         break;\

  756.     case PIX_FMT_BGR24:\

  757.         func(uint8_t,0)\

  758.             ((uint8_t*)dest)[0]= b[Y1];\

  759.             ((uint8_t*)dest)[1]= g[Y1];\

  760.             ((uint8_t*)dest)[2]= r[Y1];\

  761.             ((uint8_t*)dest)[3]= b[Y2];\

  762.             ((uint8_t*)dest)[4]= g[Y2];\

  763.             ((uint8_t*)dest)[5]= r[Y2];\

  764.             dest+=6;\

  765.         }\

  766.         break;\

  767.     case PIX_FMT_RGB565BE:\

  768.     case PIX_FMT_RGB565LE:\

  769.     case PIX_FMT_BGR565BE:\

  770.     case PIX_FMT_BGR565LE:\

  771.         {\

  772.             const int dr1= dither_2x2_8[y&1    ][0];\

  773.             const int dg1= dither_2x2_4[y&1    ][0];\

  774.             const int db1= dither_2x2_8[(y&1)^1][0];\

  775.             const int dr2= dither_2x2_8[y&1    ][1];\

  776.             const int dg2= dither_2x2_4[y&1    ][1];\

  777.             const int db2= dither_2x2_8[(y&1)^1][1];\

  778.             func(uint16_t,0)\

  779.                 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\

  780.                 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\

  781.             }\

  782.         }\

  783.         break;\

  784.     case PIX_FMT_RGB555BE:\

  785.     case PIX_FMT_RGB555LE:\

  786.     case PIX_FMT_BGR555BE:\

  787.     case PIX_FMT_BGR555LE:\

  788.         {\

  789.             const int dr1= dither_2x2_8[y&1    ][0];\

  790.             const int dg1= dither_2x2_8[y&1    ][1];\

  791.             const int db1= dither_2x2_8[(y&1)^1][0];\

  792.             const int dr2= dither_2x2_8[y&1    ][1];\

  793.             const int dg2= dither_2x2_8[y&1    ][0];\

  794.             const int db2= dither_2x2_8[(y&1)^1][1];\

  795.             func(uint16_t,0)\

  796.                 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\

  797.                 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\

  798.             }\

  799.         }\

  800.         break;\

  801.     case PIX_FMT_RGB444BE:\

  802.     case PIX_FMT_RGB444LE:\

  803.     case PIX_FMT_BGR444BE:\

  804.     case PIX_FMT_BGR444LE:\

  805.         {\

  806.             const int dr1= dither_4x4_16[y&3    ][0];\

  807.             const int dg1= dither_4x4_16[y&3    ][1];\

  808.             const int db1= dither_4x4_16[(y&3)^3][0];\

  809.             const int dr2= dither_4x4_16[y&3    ][1];\

  810.             const int dg2= dither_4x4_16[y&3    ][0];\

  811.             const int db2= dither_4x4_16[(y&3)^3][1];\

  812.             func(uint16_t,0)\

  813.                 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\

  814.                 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\

  815.             }\

  816.         }\

  817.         break;\

  818.     case PIX_FMT_RGB8:\

  819.     case PIX_FMT_BGR8:\

  820.         {\

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

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

  823.             func(uint8_t,0)\

  824.                 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\

  825.                 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\

  826.             }\

  827.         }\

  828.         break;\

  829.     case PIX_FMT_RGB4:\

  830.     case PIX_FMT_BGR4:\

  831.         {\

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

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

  834.             func(uint8_t,0)\

  835.                 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\

  836.                                  + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\

  837.             }\

  838.         }\

  839.         break;\

  840.     case PIX_FMT_RGB4_BYTE:\

  841.     case PIX_FMT_BGR4_BYTE:\

  842.         {\

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

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

  845.             func(uint8_t,0)\

  846.                 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\

  847.                 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\

  848.             }\

  849.         }\

  850.         break;\

  851.     case PIX_FMT_MONOBLACK:\

  852.     case PIX_FMT_MONOWHITE:\

  853.         {\

  854.             func_monoblack\

  855.         }\

  856.         break;\

  857.     case PIX_FMT_YUYV422:\

  858.         func2\

  859.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  860.             ((uint8_t*)dest)[2*i2+1]= U;\

  861.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  862.             ((uint8_t*)dest)[2*i2+3]= V;\

  863.         }                \

  864.         break;\

  865.     case PIX_FMT_UYVY422:\

  866.         func2\

  867.             ((uint8_t*)dest)[2*i2+0]= U;\

  868.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  869.             ((uint8_t*)dest)[2*i2+2]= V;\

  870.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  871.         }                \

  872.         break;\

  873.     case PIX_FMT_GRAY16BE:\

  874.         func_g16\

  875.             ((uint8_t*)dest)[2*i2+0]= Y1>>8;\

  876.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  877.             ((uint8_t*)dest)[2*i2+2]= Y2>>8;\

  878.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  879.         }                \

  880.         break;\

  881.     case PIX_FMT_GRAY16LE:\

  882.         func_g16\

  883.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  884.             ((uint8_t*)dest)[2*i2+1]= Y1>>8;\

  885.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  886.             ((uint8_t*)dest)[2*i2+3]= Y2>>8;\

  887.         }                \

  888.         break;\

  889.     }

  890. 

  891. static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  892.                                   const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  893.                                   const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  894. {

  895.     int i;

  896.     YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void,0), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)

  897. }

  898. 

  899. static inline void yuv2rgbXinC_full(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  900.                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  901.                                     const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  902. {

  903.     int i;

  904.     int step= c->dstFormatBpp/8;

  905.     int aidx= 3;

  906. 

  907.     switch(c->dstFormat) {

  908.     case PIX_FMT_ARGB:

  909.         dest++;

  910.         aidx= 0;

  911.     case PIX_FMT_RGB24:

  912.         aidx--;

  913.     case PIX_FMT_RGBA:

  914.         if (CONFIG_SMALL) {

  915.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  916.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  917.                 dest[aidx]= needAlpha ? A : 255;

  918.                 dest[0]= R>>22;

  919.                 dest[1]= G>>22;

  920.                 dest[2]= B>>22;

  921.                 dest+= step;

  922.             }

  923.         } else {

  924.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  925.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  926.                     dest[aidx]= A;

  927.                     dest[0]= R>>22;

  928.                     dest[1]= G>>22;

  929.                     dest[2]= B>>22;

  930.                     dest+= step;

  931.                 }

  932.             } else {

  933.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  934.                     dest[aidx]= 255;

  935.                     dest[0]= R>>22;

  936.                     dest[1]= G>>22;

  937.                     dest[2]= B>>22;

  938.                     dest+= step;

  939.                 }

  940.             }

  941.         }

  942.         break;

  943.     case PIX_FMT_ABGR:

  944.         dest++;

  945.         aidx= 0;

  946.     case PIX_FMT_BGR24:

  947.         aidx--;

  948.     case PIX_FMT_BGRA:

  949.         if (CONFIG_SMALL) {

  950.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  951.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  952.                 dest[aidx]= needAlpha ? A : 255;

  953.                 dest[0]= B>>22;

  954.                 dest[1]= G>>22;

  955.                 dest[2]= R>>22;

  956.                 dest+= step;

  957.             }

  958.         } else {

  959.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  960.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  961.                     dest[aidx]= A;

  962.                     dest[0]= B>>22;

  963.                     dest[1]= G>>22;

  964.                     dest[2]= R>>22;

  965.                     dest+= step;

  966.                 }

  967.             } else {

  968.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  969.                     dest[aidx]= 255;

  970.                     dest[0]= B>>22;

  971.                     dest[1]= G>>22;

  972.                     dest[2]= R>>22;

  973.                     dest+= step;

  974.                 }

  975.             }

  976.         }

  977.         break;

  978.     default:

  979.         assert(0);

  980.     }

  981. }

  982. 

  983. static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val)

  984. {

  985.     int i;

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

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

  988.         memset(ptr, val, width);

  989.         ptr += stride;

  990.     }

  991. }

  992. 

  993. static inline void rgb48ToY(uint8_t *dst, const uint8_t *src, long width,

  994.                             uint32_t *unused)

  995. {

  996.     int i;

  997.     for (i = 0; i < width; i++) {

  998.         int r = src[i*6+0];

  999.         int g = src[i*6+2];

  1000.         int b = src[i*6+4];

  1001. 

  1002.         dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1003.     }

  1004. }

  1005. 

  1006. static inline void rgb48ToUV(uint8_t *dstU, uint8_t *dstV,

  1007.                              const uint8_t *src1, const uint8_t *src2,

  1008.                              long width, uint32_t *unused)

  1009. {

  1010.     int i;

  1011.     assert(src1==src2);

  1012.     for (i = 0; i < width; i++) {

  1013.         int r = src1[6*i + 0];

  1014.         int g = src1[6*i + 2];

  1015.         int b = src1[6*i + 4];

  1016. 

  1017.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1018.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1019.     }

  1020. }

  1021. 

  1022. static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1023.                                   const uint8_t *src1, const uint8_t *src2,

  1024.                                   long width, uint32_t *unused)

  1025. {

  1026.     int i;

  1027.     assert(src1==src2);

  1028.     for (i = 0; i < width; i++) {

  1029.         int r= src1[12*i + 0] + src1[12*i + 6];

  1030.         int g= src1[12*i + 2] + src1[12*i + 8];

  1031.         int b= src1[12*i + 4] + src1[12*i + 10];

  1032. 

  1033.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1034.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1035.     }

  1036. }

  1037. 

  1038. #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\

  1039. static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\

  1040. {\

  1041.     int i;\

  1042.     for (i=0; i<width; i++) {\

  1043.         int b= (((const type*)src)[i]>>shb)&maskb;\

  1044.         int g= (((const type*)src)[i]>>shg)&maskg;\

  1045.         int r= (((const type*)src)[i]>>shr)&maskr;\

  1046. \

  1047.         dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\

  1048.     }\

  1049. }

  1050. 

  1051. BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1052. BGR2Y(uint32_t,bgr321ToY,16,16, 0, 0xFF00, 0x00FF, 0xFF00, RY    , GY<<8, BY    , RGB2YUV_SHIFT+8)

  1053. BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1054. BGR2Y(uint32_t,rgb321ToY, 0,16,16, 0xFF00, 0x00FF, 0xFF00, RY    , GY<<8, BY    , RGB2YUV_SHIFT+8)

  1055. BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)

  1056. BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)

  1057. BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)

  1058. BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)

  1059. 

  1060. static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1061. {

  1062.     int i;

  1063.     for (i=0; i<width; i++) {

  1064.         dst[i]= src[4*i];

  1065.     }

  1066. }

  1067. 

  1068. #define BGR2UV(type, name, shr, shg, shb, shp, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S) \

  1069. static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1070. {\

  1071.     int i;\

  1072.     for (i=0; i<width; i++) {\

  1073.         int b= ((((const type*)src)[i]>>shp)&maskb)>>shb;\

  1074.         int g= ((((const type*)src)[i]>>shp)&maskg)>>shg;\

  1075.         int r= ((((const type*)src)[i]>>shp)&maskr)>>shr;\

  1076. \

  1077.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\

  1078.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\

  1079.     }\

  1080. }\

  1081. static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1082. {\

  1083.     int i;\

  1084.     for (i=0; i<width; i++) {\

  1085.         int pix0= ((const type*)src)[2*i+0]>>shp;\

  1086.         int pix1= ((const type*)src)[2*i+1]>>shp;\

  1087.         int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\

  1088.         int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\

  1089.         int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\

  1090.         g&= maskg|(2*maskg);\

  1091. \

  1092.         g>>=shg;\

  1093. \

  1094.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\

  1095.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\

  1096.     }\

  1097. }

  1098. 

  1099. BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1100. BGR2UV(uint32_t,bgr321ToUV,16, 0, 0, 8, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1101. BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1102. BGR2UV(uint32_t,rgb321ToUV, 0, 0,16, 8,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1103. BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0, 0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)

  1104. BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0, 0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)

  1105. BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0, 0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)

  1106. BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0, 0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)

  1107. 

  1108. static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)

  1109. {

  1110.     int i;

  1111.     for (i=0; i<width; i++) {

  1112.         int d= src[i];

  1113. 

  1114.         dst[i]= pal[d] & 0xFF;

  1115.     }

  1116. }

  1117. 

  1118. static inline void palToUV(uint8_t *dstU, uint8_t *dstV,

  1119.                            const uint8_t *src1, const uint8_t *src2,

  1120.                            long width, uint32_t *pal)

  1121. {

  1122.     int i;

  1123.     assert(src1 == src2);

  1124.     for (i=0; i<width; i++) {

  1125.         int p= pal[src1[i]];

  1126. 

  1127.         dstU[i]= p>>8;

  1128.         dstV[i]= p>>16;

  1129.     }

  1130. }

  1131. 

  1132. static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1133. {

  1134.     int i, j;

  1135.     for (i=0; i<width/8; i++) {

  1136.         int d= ~src[i];

  1137.         for(j=0; j<8; j++)

  1138.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1139.     }

  1140. }

  1141. 

  1142. static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1143. {

  1144.     int i, j;

  1145.     for (i=0; i<width/8; i++) {

  1146.         int d= src[i];

  1147.         for(j=0; j<8; j++)

  1148.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1149.     }

  1150. }

  1151. 

  1152. //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one

  1153. //Plain C versions

  1154. #if CONFIG_RUNTIME_CPUDETECT

  1155. #  define COMPILE_C 1

  1156. #  if   ARCH_X86

  1157. #    define COMPILE_MMX     HAVE_MMX

  1158. #    define COMPILE_MMX2    HAVE_MMX2

  1159. #    define COMPILE_3DNOW   HAVE_AMD3DNOW

  1160. #  elif ARCH_PPC

  1161. #    define COMPILE_ALTIVEC HAVE_ALTIVEC

  1162. #  endif

  1163. #else /* CONFIG_RUNTIME_CPUDETECT */

  1164. #  if   ARCH_X86

  1165. #    if   HAVE_MMX2

  1166. #      define COMPILE_MMX2  1

  1167. #    elif HAVE_AMD3DNOW

  1168. #      define COMPILE_3DNOW 1

  1169. #    elif HAVE_MMX

  1170. #      define COMPILE_MMX   1

  1171. #    else

  1172. #      define COMPILE_C     1

  1173. #    endif

  1174. #  elif ARCH_PPC && HAVE_ALTIVEC

  1175. #    define COMPILE_ALTIVEC 1

  1176. #  else

  1177. #    define COMPILE_C       1

  1178. #  endif

  1179. #endif

  1180. 

  1181. #ifndef COMPILE_C

  1182. #  define COMPILE_C 0

  1183. #endif

  1184. #ifndef COMPILE_MMX

  1185. #  define COMPILE_MMX 0

  1186. #endif

  1187. #ifndef COMPILE_MMX2

  1188. #  define COMPILE_MMX2 0

  1189. #endif

  1190. #ifndef COMPILE_3DNOW

  1191. #  define COMPILE_3DNOW 0

  1192. #endif

  1193. #ifndef COMPILE_ALTIVEC

  1194. #  define COMPILE_ALTIVEC 0

  1195. #endif

  1196. 

  1197. #define COMPILE_TEMPLATE_MMX 0

  1198. #define COMPILE_TEMPLATE_MMX2 0

  1199. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1200. #define COMPILE_TEMPLATE_ALTIVEC 0

  1201. 

  1202. #if COMPILE_C

  1203. #define RENAME(a) a ## _C

  1204. #include "swscale_template.c"

  1205. #endif

  1206. 

  1207. #if COMPILE_ALTIVEC

  1208. #undef RENAME

  1209. #undef COMPILE_TEMPLATE_ALTIVEC

  1210. #define COMPILE_TEMPLATE_ALTIVEC 1

  1211. #define RENAME(a) a ## _altivec

  1212. #include "swscale_template.c"

  1213. #endif

  1214. 

  1215. #if ARCH_X86

  1216. 

  1217. //MMX versions

  1218. #if COMPILE_MMX

  1219. #undef RENAME

  1220. #undef COMPILE_TEMPLATE_MMX

  1221. #undef COMPILE_TEMPLATE_MMX2

  1222. #undef COMPILE_TEMPLATE_AMD3DNOW

  1223. #define COMPILE_TEMPLATE_MMX 1

  1224. #define COMPILE_TEMPLATE_MMX2 0

  1225. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1226. #define RENAME(a) a ## _MMX

  1227. #include "swscale_template.c"

  1228. #endif

  1229. 

  1230. //MMX2 versions

  1231. #if COMPILE_MMX2

  1232. #undef RENAME

  1233. #undef COMPILE_TEMPLATE_MMX

  1234. #undef COMPILE_TEMPLATE_MMX2

  1235. #undef COMPILE_TEMPLATE_AMD3DNOW

  1236. #define COMPILE_TEMPLATE_MMX 1

  1237. #define COMPILE_TEMPLATE_MMX2 1

  1238. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1239. #define RENAME(a) a ## _MMX2

  1240. #include "swscale_template.c"

  1241. #endif

  1242. 

  1243. //3DNOW versions

  1244. #if COMPILE_3DNOW

  1245. #undef RENAME

  1246. #undef COMPILE_TEMPLATE_MMX

  1247. #undef COMPILE_TEMPLATE_MMX2

  1248. #undef COMPILE_TEMPLATE_AMD3DNOW

  1249. #define COMPILE_TEMPLATE_MMX 1

  1250. #define COMPILE_TEMPLATE_MMX2 0

  1251. #define COMPILE_TEMPLATE_AMD3DNOW 1

  1252. #define RENAME(a) a ## _3DNow

  1253. #include "swscale_template.c"

  1254. #endif

  1255. 

  1256. #endif //ARCH_X86

  1257. 

  1258. SwsFunc ff_getSwsFunc(SwsContext *c)

  1259. {

  1260. #if CONFIG_RUNTIME_CPUDETECT

  1261.     int flags = c->flags;

  1262. 

  1263. #if ARCH_X86

  1264.     // ordered per speed fastest first

  1265.     if (flags & SWS_CPU_CAPS_MMX2) {

  1266.         sws_init_swScale_MMX2(c);

  1267.         return swScale_MMX2;

  1268.     } else if (flags & SWS_CPU_CAPS_3DNOW) {

  1269.         sws_init_swScale_3DNow(c);

  1270.         return swScale_3DNow;

  1271.     } else if (flags & SWS_CPU_CAPS_MMX) {

  1272.         sws_init_swScale_MMX(c);

  1273.         return swScale_MMX;

  1274.     } else {

  1275.         sws_init_swScale_C(c);

  1276.         return swScale_C;

  1277.     }

  1278. 

  1279. #else

  1280. #if COMPILE_ALTIVEC

  1281.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1282.         sws_init_swScale_altivec(c);

  1283.         return swScale_altivec;

  1284.     } else {

  1285.         sws_init_swScale_C(c);

  1286.         return swScale_C;

  1287.     }

  1288. #endif

  1289.     sws_init_swScale_C(c);

  1290.     return swScale_C;

  1291. #endif /* ARCH_X86 */

  1292. #else //CONFIG_RUNTIME_CPUDETECT

  1293. #if   COMPILE_TEMPLATE_MMX2

  1294.     sws_init_swScale_MMX2(c);

  1295.     return swScale_MMX2;

  1296. #elif COMPILE_TEMPLATE_AMD3DNOW

  1297.     sws_init_swScale_3DNow(c);

  1298.     return swScale_3DNow;

  1299. #elif COMPILE_TEMPLATE_MMX

  1300.     sws_init_swScale_MMX(c);

  1301.     return swScale_MMX;

  1302. #elif COMPILE_TEMPLATE_ALTIVEC

  1303.     sws_init_swScale_altivec(c);

  1304.     return swScale_altivec;

  1305. #else

  1306.     sws_init_swScale_C(c);

  1307.     return swScale_C;

  1308. #endif

  1309. #endif //!CONFIG_RUNTIME_CPUDETECT

  1310. }

  1311. 

  1312. static void copyPlane(const uint8_t *src, int srcStride,

  1313.                       int srcSliceY, int srcSliceH, int width,

  1314.                       uint8_t *dst, int dstStride)

  1315. {

  1316.     dst += dstStride * srcSliceY;

  1317.     if (dstStride == srcStride && srcStride > 0) {

  1318.         memcpy(dst, src, srcSliceH * dstStride);

  1319.     } else {

  1320.         int i;

  1321.         for (i=0; i<srcSliceH; i++) {

  1322.             memcpy(dst, src, width);

  1323.             src += srcStride;

  1324.             dst += dstStride;

  1325.         }

  1326.     }

  1327. }

  1328. 

  1329. static int planarToNv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1330.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1331. {

  1332.     uint8_t *dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1333. 

  1334.     copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,

  1335.               dstParam[0], dstStride[0]);

  1336. 

  1337.     if (c->dstFormat == PIX_FMT_NV12)

  1338.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  1339.     else

  1340.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  1341. 

  1342.     return srcSliceH;

  1343. }

  1344. 

  1345. static int planarToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1346.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1347. {

  1348.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1349. 

  1350.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1351. 

  1352.     return srcSliceH;

  1353. }

  1354. 

  1355. static int planarToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1356.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1357. {

  1358.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1359. 

  1360.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1361. 

  1362.     return srcSliceH;

  1363. }

  1364. 

  1365. static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1366.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1367. {

  1368.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1369. 

  1370.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1371. 

  1372.     return srcSliceH;

  1373. }

  1374. 

  1375. static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1376.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1377. {

  1378.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1379. 

  1380.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1381. 

  1382.     return srcSliceH;

  1383. }

  1384. 

  1385. static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1386.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1387. {

  1388.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1389.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  1390.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  1391. 

  1392.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1393. 

  1394.     if (dstParam[3])

  1395.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1396. 

  1397.     return srcSliceH;

  1398. }

  1399. 

  1400. static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1401.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1402. {

  1403.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1404.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  1405.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  1406. 

  1407.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1408. 

  1409.     return srcSliceH;

  1410. }

  1411. 

  1412. static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1413.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1414. {

  1415.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1416.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  1417.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  1418. 

  1419.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1420. 

  1421.     if (dstParam[3])

  1422.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1423. 

  1424.     return srcSliceH;

  1425. }

  1426. 

  1427. static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1428.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1429. {

  1430.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1431.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  1432.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  1433. 

  1434.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1435. 

  1436.     return srcSliceH;

  1437. }

  1438. 

  1439. static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  1440. {

  1441.     long i;

  1442.     for (i=0; i<num_pixels; i++)

  1443.         ((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | (src[(i<<1)+1] << 24);

  1444. }

  1445. 

  1446. static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  1447. {

  1448.     long i;

  1449. 

  1450.     for (i=0; i<num_pixels; i++)

  1451.         ((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | src[(i<<1)+1];

  1452. }

  1453. 

  1454. static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  1455. {

  1456.     long i;

  1457. 

  1458.     for (i=0; i<num_pixels; i++) {

  1459.         //FIXME slow?

  1460.         dst[0]= palette[src[i<<1]*4+0];

  1461.         dst[1]= palette[src[i<<1]*4+1];

  1462.         dst[2]= palette[src[i<<1]*4+2];

  1463.         dst+= 3;

  1464.     }

  1465. }

  1466. 

  1467. static int palToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1468.                            int srcSliceH, uint8_t* dst[], int dstStride[])

  1469. {

  1470.     const enum PixelFormat srcFormat= c->srcFormat;

  1471.     const enum PixelFormat dstFormat= c->dstFormat;

  1472.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  1473.                  const uint8_t *palette)=NULL;

  1474.     int i;

  1475.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1476.     const uint8_t *srcPtr= src[0];

  1477. 

  1478.     if (srcFormat == PIX_FMT_Y400A) {

  1479.         switch (dstFormat) {

  1480.         case PIX_FMT_RGB32  : conv = gray8aToPacked32; break;

  1481.         case PIX_FMT_BGR32  : conv = gray8aToPacked32; break;

  1482.         case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;

  1483.         case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;

  1484.         case PIX_FMT_RGB24  : conv = gray8aToPacked24; break;

  1485.         case PIX_FMT_BGR24  : conv = gray8aToPacked24; break;

  1486.         }

  1487.     } else if (usePal(srcFormat)) {

  1488.         switch (dstFormat) {

  1489.         case PIX_FMT_RGB32  : conv = sws_convertPalette8ToPacked32; break;

  1490.         case PIX_FMT_BGR32  : conv = sws_convertPalette8ToPacked32; break;

  1491.         case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;

  1492.         case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;

  1493.         case PIX_FMT_RGB24  : conv = sws_convertPalette8ToPacked24; break;

  1494.         case PIX_FMT_BGR24  : conv = sws_convertPalette8ToPacked24; break;

  1495.         }

  1496.     }

  1497. 

  1498.     if (!conv)

  1499.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1500.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1501.     else {

  1502.         for (i=0; i<srcSliceH; i++) {

  1503.             conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  1504.             srcPtr+= srcStride[0];

  1505.             dstPtr+= dstStride[0];

  1506.         }

  1507.     }

  1508. 

  1509.     return srcSliceH;

  1510. }

  1511. 

  1512. #define isRGBA32(x) (            \

  1513.            (x) == PIX_FMT_ARGB   \

  1514.         || (x) == PIX_FMT_RGBA   \

  1515.         || (x) == PIX_FMT_BGRA   \

  1516.         || (x) == PIX_FMT_ABGR   \

  1517.         )

  1518. 

  1519. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  1520. static int rgbToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1521.                            int srcSliceH, uint8_t* dst[], int dstStride[])

  1522. {

  1523.     const enum PixelFormat srcFormat= c->srcFormat;

  1524.     const enum PixelFormat dstFormat= c->dstFormat;

  1525.     const int srcBpp= (c->srcFormatBpp + 7) >> 3;

  1526.     const int dstBpp= (c->dstFormatBpp + 7) >> 3;

  1527.     const int srcId= c->srcFormatBpp >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1528.     const int dstId= c->dstFormatBpp >> 2;

  1529.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1530. 

  1531. #define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)

  1532. 

  1533.     if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {

  1534.         if (     CONV_IS(ABGR, RGBA)

  1535.               || CONV_IS(ARGB, BGRA)

  1536.               || CONV_IS(BGRA, ARGB)

  1537.               || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;

  1538.         else if (CONV_IS(ABGR, ARGB)

  1539.               || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;

  1540.         else if (CONV_IS(ABGR, BGRA)

  1541.               || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;

  1542.         else if (CONV_IS(BGRA, RGBA)

  1543.               || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;

  1544.         else if (CONV_IS(BGRA, ABGR)

  1545.               || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;

  1546.     } else

  1547.     /* BGR -> BGR */

  1548.     if (  (isBGRinInt(srcFormat) && isBGRinInt(dstFormat))

  1549.        || (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {

  1550.         switch(srcId | (dstId<<4)) {

  1551.         case 0x34: conv= rgb16to15; break;

  1552.         case 0x36: conv= rgb24to15; break;

  1553.         case 0x38: conv= rgb32to15; break;

  1554.         case 0x43: conv= rgb15to16; break;

  1555.         case 0x46: conv= rgb24to16; break;

  1556.         case 0x48: conv= rgb32to16; break;

  1557.         case 0x63: conv= rgb15to24; break;

  1558.         case 0x64: conv= rgb16to24; break;

  1559.         case 0x68: conv= rgb32to24; break;

  1560.         case 0x83: conv= rgb15to32; break;

  1561.         case 0x84: conv= rgb16to32; break;

  1562.         case 0x86: conv= rgb24to32; break;

  1563.         }

  1564.     } else if (  (isBGRinInt(srcFormat) && isRGBinInt(dstFormat))

  1565.              || (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {

  1566.         switch(srcId | (dstId<<4)) {

  1567.         case 0x33: conv= rgb15tobgr15; break;

  1568.         case 0x34: conv= rgb16tobgr15; break;

  1569.         case 0x36: conv= rgb24tobgr15; break;

  1570.         case 0x38: conv= rgb32tobgr15; break;

  1571.         case 0x43: conv= rgb15tobgr16; break;

  1572.         case 0x44: conv= rgb16tobgr16; break;

  1573.         case 0x46: conv= rgb24tobgr16; break;

  1574.         case 0x48: conv= rgb32tobgr16; break;

  1575.         case 0x63: conv= rgb15tobgr24; break;

  1576.         case 0x64: conv= rgb16tobgr24; break;

  1577.         case 0x66: conv= rgb24tobgr24; break;

  1578.         case 0x68: conv= rgb32tobgr24; break;

  1579.         case 0x83: conv= rgb15tobgr32; break;

  1580.         case 0x84: conv= rgb16tobgr32; break;

  1581.         case 0x86: conv= rgb24tobgr32; break;

  1582.         }

  1583.     }

  1584. 

  1585.     if (!conv) {

  1586.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1587.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1588.     } else {

  1589.         const uint8_t *srcPtr= src[0];

  1590.               uint8_t *dstPtr= dst[0];

  1591.         if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) && !isRGBA32(dstFormat))

  1592.             srcPtr += ALT32_CORR;

  1593. 

  1594.         if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) && !isRGBA32(srcFormat))

  1595.             dstPtr += ALT32_CORR;

  1596. 

  1597.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  1598.             conv(srcPtr, dstPtr + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1599.         else {

  1600.             int i;

  1601.             dstPtr += dstStride[0]*srcSliceY;

  1602. 

  1603.             for (i=0; i<srcSliceH; i++) {

  1604.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1605.                 srcPtr+= srcStride[0];

  1606.                 dstPtr+= dstStride[0];

  1607.             }

  1608.         }

  1609.     }

  1610.     return srcSliceH;

  1611. }

  1612. 

  1613. static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1614.                               int srcSliceH, uint8_t* dst[], int dstStride[])

  1615. {

  1616.     rgb24toyv12(

  1617.         src[0],

  1618.         dst[0]+ srcSliceY    *dstStride[0],

  1619.         dst[1]+(srcSliceY>>1)*dstStride[1],

  1620.         dst[2]+(srcSliceY>>1)*dstStride[2],

  1621.         c->srcW, srcSliceH,

  1622.         dstStride[0], dstStride[1], srcStride[0]);

  1623.     if (dst[3])

  1624.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1625.     return srcSliceH;

  1626. }

  1627. 

  1628. static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1629.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1630. {

  1631.     copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,

  1632.               dst[0], dstStride[0]);

  1633. 

  1634.     planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  1635.              srcSliceH >> 2, srcStride[1], dstStride[1]);

  1636.     planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  1637.              srcSliceH >> 2, srcStride[2], dstStride[2]);

  1638.     if (dst[3])

  1639.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1640.     return srcSliceH;

  1641. }

  1642. 

  1643. /* unscaled copy like stuff (assumes nearly identical formats) */

  1644. static int packedCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1645.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1646. {

  1647.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1648.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1649.     else {

  1650.         int i;

  1651.         const uint8_t *srcPtr= src[0];

  1652.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1653.         int length=0;

  1654. 

  1655.         /* universal length finder */

  1656.         while(length+c->srcW <= FFABS(dstStride[0])

  1657.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  1658.         assert(length!=0);

  1659. 

  1660.         for (i=0; i<srcSliceH; i++) {

  1661.             memcpy(dstPtr, srcPtr, length);

  1662.             srcPtr+= srcStride[0];

  1663.             dstPtr+= dstStride[0];

  1664.         }

  1665.     }

  1666.     return srcSliceH;

  1667. }

  1668. 

  1669. static int planarCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1670.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1671. {

  1672.     int plane, i, j;

  1673.     for (plane=0; plane<4; plane++) {

  1674.         int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1675.         int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1676.         int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1677.         const uint8_t *srcPtr= src[plane];

  1678.         uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  1679. 

  1680.         if (!dst[plane]) continue;

  1681.         // ignore palette for GRAY8

  1682.         if (plane == 1 && !dst[2]) continue;

  1683.         if (!src[plane] || (plane == 1 && !src[2])) {

  1684.             if(is16BPS(c->dstFormat))

  1685.                 length*=2;

  1686.             fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);

  1687.         } else {

  1688.             if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {

  1689.                 if (!isBE(c->srcFormat)) srcPtr++;

  1690.                 for (i=0; i<height; i++) {

  1691.                     for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  1692.                     srcPtr+= srcStride[plane];

  1693.                     dstPtr+= dstStride[plane];

  1694.                 }

  1695.             } else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {

  1696.                 for (i=0; i<height; i++) {

  1697.                     for (j=0; j<length; j++) {

  1698.                         dstPtr[ j<<1   ] = srcPtr[j];

  1699.                         dstPtr[(j<<1)+1] = srcPtr[j];

  1700.                     }

  1701.                     srcPtr+= srcStride[plane];

  1702.                     dstPtr+= dstStride[plane];

  1703.                 }

  1704.             } else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)

  1705.                   && isBE(c->srcFormat) != isBE(c->dstFormat)) {

  1706. 

  1707.                 for (i=0; i<height; i++) {

  1708.                     for (j=0; j<length; j++)

  1709.                         ((uint16_t*)dstPtr)[j] = av_bswap16(((const uint16_t*)srcPtr)[j]);

  1710.                     srcPtr+= srcStride[plane];

  1711.                     dstPtr+= dstStride[plane];

  1712.                 }

  1713.             } else if (dstStride[plane] == srcStride[plane] &&

  1714.                        srcStride[plane] > 0 && srcStride[plane] == length) {

  1715.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane],

  1716.                        height*dstStride[plane]);

  1717.             } else {

  1718.                 if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))

  1719.                     length*=2;

  1720.                 for (i=0; i<height; i++) {

  1721.                     memcpy(dstPtr, srcPtr, length);

  1722.                     srcPtr+= srcStride[plane];

  1723.                     dstPtr+= dstStride[plane];

  1724.                 }

  1725.             }

  1726.         }

  1727.     }

  1728.     return srcSliceH;

  1729. }

  1730. 

  1731. int ff_hardcodedcpuflags(void)

  1732. {

  1733.     int flags = 0;

  1734. #if   COMPILE_TEMPLATE_MMX2

  1735.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  1736. #elif COMPILE_TEMPLATE_AMD3DNOW

  1737.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  1738. #elif COMPILE_TEMPLATE_MMX

  1739.     flags |= SWS_CPU_CAPS_MMX;

  1740. #elif COMPILE_TEMPLATE_ALTIVEC

  1741.     flags |= SWS_CPU_CAPS_ALTIVEC;

  1742. #elif ARCH_BFIN

  1743.     flags |= SWS_CPU_CAPS_BFIN;

  1744. #endif

  1745.     return flags;

  1746. }

  1747. 

  1748. void ff_get_unscaled_swscale(SwsContext *c)

  1749. {

  1750.     const enum PixelFormat srcFormat = c->srcFormat;

  1751.     const enum PixelFormat dstFormat = c->dstFormat;

  1752.     const int flags = c->flags;

  1753.     const int dstH = c->dstH;

  1754.     int needsDither;

  1755. 

  1756.     needsDither= isAnyRGB(dstFormat)

  1757.         &&  c->dstFormatBpp < 24

  1758.         && (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));

  1759. 

  1760.     /* yv12_to_nv12 */

  1761.     if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {

  1762.         c->swScale= planarToNv12Wrapper;

  1763.     }

  1764.     /* yuv2bgr */

  1765.     if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && isAnyRGB(dstFormat)

  1766.         && !(flags & SWS_ACCURATE_RND) && !(dstH&1)) {

  1767.         c->swScale= ff_yuv2rgb_get_func_ptr(c);

  1768.     }

  1769. 

  1770.     if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT)) {

  1771.         c->swScale= yvu9ToYv12Wrapper;

  1772.     }

  1773. 

  1774.     /* bgr24toYV12 */

  1775.     if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))

  1776.         c->swScale= bgr24ToYv12Wrapper;

  1777. 

  1778.     /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  1779.     if (   isAnyRGB(srcFormat)

  1780.         && isAnyRGB(dstFormat)

  1781.         && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  1782.         && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  1783.         && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  1784.         && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  1785.         && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  1786.         && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  1787.         && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  1788.         && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  1789.         && srcFormat != PIX_FMT_RGB48LE   && dstFormat != PIX_FMT_RGB48LE

  1790.         && srcFormat != PIX_FMT_RGB48BE   && dstFormat != PIX_FMT_RGB48BE

  1791.         && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  1792.         c->swScale= rgbToRgbWrapper;

  1793. 

  1794.     if ((usePal(srcFormat) && (

  1795.         dstFormat == PIX_FMT_RGB32   ||

  1796.         dstFormat == PIX_FMT_RGB32_1 ||

  1797.         dstFormat == PIX_FMT_RGB24   ||

  1798.         dstFormat == PIX_FMT_BGR32   ||

  1799.         dstFormat == PIX_FMT_BGR32_1 ||

  1800.         dstFormat == PIX_FMT_BGR24)))

  1801.         c->swScale= palToRgbWrapper;

  1802. 

  1803.     if (srcFormat == PIX_FMT_YUV422P) {

  1804.         if (dstFormat == PIX_FMT_YUYV422)

  1805.             c->swScale= yuv422pToYuy2Wrapper;

  1806.         else if (dstFormat == PIX_FMT_UYVY422)

  1807.             c->swScale= yuv422pToUyvyWrapper;

  1808.     }

  1809. 

  1810.     /* LQ converters if -sws 0 or -sws 4*/

  1811.     if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {

  1812.         /* yv12_to_yuy2 */

  1813.         if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {

  1814.             if (dstFormat == PIX_FMT_YUYV422)

  1815.                 c->swScale= planarToYuy2Wrapper;

  1816.             else if (dstFormat == PIX_FMT_UYVY422)

  1817.                 c->swScale= planarToUyvyWrapper;

  1818.         }

  1819.     }

  1820.     if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  1821.         c->swScale= yuyvToYuv420Wrapper;

  1822.     if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  1823.         c->swScale= uyvyToYuv420Wrapper;

  1824.     if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)

  1825.         c->swScale= yuyvToYuv422Wrapper;

  1826.     if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)

  1827.         c->swScale= uyvyToYuv422Wrapper;

  1828. 

  1829. #if COMPILE_ALTIVEC

  1830.     if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  1831.         !(c->flags & SWS_BITEXACT) &&

  1832.         srcFormat == PIX_FMT_YUV420P) {

  1833.         // unscaled YV12 -> packed YUV, we want speed

  1834.         if (dstFormat == PIX_FMT_YUYV422)

  1835.             c->swScale= yv12toyuy2_unscaled_altivec;

  1836.         else if (dstFormat == PIX_FMT_UYVY422)

  1837.             c->swScale= yv12touyvy_unscaled_altivec;

  1838.     }

  1839. #endif

  1840. 

  1841.     /* simple copy */

  1842.     if (  srcFormat == dstFormat

  1843.         || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)

  1844.         || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)

  1845.         || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  1846.         || (isPlanarYUV(dstFormat) && isGray(srcFormat))

  1847.         || (isGray(dstFormat) && isGray(srcFormat))

  1848.         || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)

  1849.             && c->chrDstHSubSample == c->chrSrcHSubSample

  1850.             && c->chrDstVSubSample == c->chrSrcVSubSample

  1851.             && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21

  1852.             && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))

  1853.     {

  1854.         if (isPacked(c->srcFormat))

  1855.             c->swScale= packedCopyWrapper;

  1856.         else /* Planar YUV or gray */

  1857.             c->swScale= planarCopyWrapper;

  1858.     }

  1859. #if ARCH_BFIN

  1860.     if (flags & SWS_CPU_CAPS_BFIN)

  1861.         ff_bfin_get_unscaled_swscale (c);

  1862. #endif

  1863. }

  1864. 

  1865. static void reset_ptr(const uint8_t* src[], int format)

  1866. {

  1867.     if(!isALPHA(format))

  1868.         src[3]=NULL;

  1869.     if(!isPlanarYUV(format)) {

  1870.         src[3]=src[2]=NULL;

  1871. 

  1872.         if (!usePal(format))

  1873.             src[1]= NULL;

  1874.     }

  1875. }

  1876. 

  1877. static int check_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt,

  1878.                                 const int linesizes[4])

  1879. {

  1880.     const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];

  1881.     int i;

  1882. 

  1883.     for (i = 0; i < 4; i++) {

  1884.         int plane = desc->comp[i].plane;

  1885.         if (!data[plane] || !linesizes[plane])

  1886.             return 0;

  1887.     }

  1888. 

  1889.     return 1;

  1890. }

  1891. 

  1892. /**

  1893.  * swscale wrapper, so we don't need to export the SwsContext.

  1894.  * Assumes planar YUV to be in YUV order instead of YVU.

  1895.  */

  1896. int sws_scale(SwsContext *c, const uint8_t* const src[], const int srcStride[], int srcSliceY,

  1897.               int srcSliceH, uint8_t* const dst[], const int dstStride[])

  1898. {

  1899.     int i;

  1900.     const uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};

  1901.     uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};

  1902. 

  1903.     // do not mess up sliceDir if we have a "trailing" 0-size slice

  1904.     if (srcSliceH == 0)

  1905.         return 0;

  1906. 

  1907.     if (!check_image_pointers(src, c->srcFormat, srcStride)) {

  1908.         av_log(c, AV_LOG_ERROR, "bad src image pointers\n");

  1909.         return 0;

  1910.     }

  1911.     if (!check_image_pointers(dst, c->dstFormat, dstStride)) {

  1912.         av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");

  1913.         return 0;

  1914.     }

  1915. 

  1916.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  1917.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  1918.         return 0;

  1919.     }

  1920.     if (c->sliceDir == 0) {

  1921.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  1922.     }

  1923. 

  1924.     if (usePal(c->srcFormat)) {

  1925.         for (i=0; i<256; i++) {

  1926.             int p, r, g, b,y,u,v;

  1927.             if(c->srcFormat == PIX_FMT_PAL8) {

  1928.                 p=((const uint32_t*)(src[1]))[i];

  1929.                 r= (p>>16)&0xFF;

  1930.                 g= (p>> 8)&0xFF;

  1931.                 b=  p     &0xFF;

  1932.             } else if(c->srcFormat == PIX_FMT_RGB8) {

  1933.                 r= (i>>5    )*36;

  1934.                 g= ((i>>2)&7)*36;

  1935.                 b= (i&3     )*85;

  1936.             } else if(c->srcFormat == PIX_FMT_BGR8) {

  1937.                 b= (i>>6    )*85;

  1938.                 g= ((i>>3)&7)*36;

  1939.                 r= (i&7     )*36;

  1940.             } else if(c->srcFormat == PIX_FMT_RGB4_BYTE) {

  1941.                 r= (i>>3    )*255;

  1942.                 g= ((i>>1)&3)*85;

  1943.                 b= (i&1     )*255;

  1944.             } else if(c->srcFormat == PIX_FMT_GRAY8 || c->srcFormat == PIX_FMT_Y400A) {

  1945.                 r = g = b = i;

  1946.             } else {

  1947.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  1948.                 b= (i>>3    )*255;

  1949.                 g= ((i>>1)&3)*85;

  1950.                 r= (i&1     )*255;

  1951.             }

  1952.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  1953.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  1954.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  1955.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  1956. 

  1957.             switch(c->dstFormat) {

  1958.             case PIX_FMT_BGR32:

  1959. #if !HAVE_BIGENDIAN

  1960.             case PIX_FMT_RGB24:

  1961. #endif

  1962.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  1963.                 break;

  1964.             case PIX_FMT_BGR32_1:

  1965. #if HAVE_BIGENDIAN

  1966.             case PIX_FMT_BGR24:

  1967. #endif

  1968.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  1969.                 break;

  1970.             case PIX_FMT_RGB32_1:

  1971. #if HAVE_BIGENDIAN

  1972.             case PIX_FMT_RGB24:

  1973. #endif

  1974.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  1975.                 break;

  1976.             case PIX_FMT_RGB32:

  1977. #if !HAVE_BIGENDIAN

  1978.             case PIX_FMT_BGR24:

  1979. #endif

  1980.             default:

  1981.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  1982.             }

  1983.         }

  1984.     }

  1985. 

  1986.     // copy strides, so they can safely be modified

  1987.     if (c->sliceDir == 1) {

  1988.         // slices go from top to bottom

  1989.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};

  1990.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};

  1991. 

  1992.         reset_ptr(src2, c->srcFormat);

  1993.         reset_ptr((const uint8_t**)dst2, c->dstFormat);

  1994. 

  1995.         /* reset slice direction at end of frame */

  1996.         if (srcSliceY + srcSliceH == c->srcH)

  1997.             c->sliceDir = 0;

  1998. 

  1999.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);

  2000.     } else {

  2001.         // slices go from bottom to top => we flip the image internally

  2002.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};

  2003.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};

  2004. 

  2005.         src2[0] += (srcSliceH-1)*srcStride[0];

  2006.         if (!usePal(c->srcFormat))

  2007.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  2008.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  2009.         src2[3] += (srcSliceH-1)*srcStride[3];

  2010.         dst2[0] += ( c->dstH                      -1)*dstStride[0];

  2011.         dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];

  2012.         dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];

  2013.         dst2[3] += ( c->dstH                      -1)*dstStride[3];

  2014. 

  2015.         reset_ptr(src2, c->srcFormat);

  2016.         reset_ptr((const uint8_t**)dst2, c->dstFormat);

  2017. 

  2018.         /* reset slice direction at end of frame */

  2019.         if (!srcSliceY)

  2020.             c->sliceDir = 0;

  2021. 

  2022.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  2023.     }

  2024. }

  2025. 

  2026. #if LIBSWSCALE_VERSION_MAJOR < 1

  2027. int sws_scale_ordered(SwsContext *c, const uint8_t* const src[], int srcStride[], int srcSliceY,

  2028.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2029. {

  2030.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  2031. }

  2032. #endif

  2033. 

  2034. /* Convert the palette to the same packed 32-bit format as the palette */

  2035. void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  2036. {

  2037.     long i;

  2038. 

  2039.     for (i=0; i<num_pixels; i++)

  2040.         ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];

  2041. }

  2042. 

  2043. /* Palette format: ABCD -> dst format: ABC */

  2044. void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  2045. {

  2046.     long i;

  2047. 

  2048.     for (i=0; i<num_pixels; i++) {

  2049.         //FIXME slow?

  2050.         dst[0]= palette[src[i]*4+0];

  2051.         dst[1]= palette[src[i]*4+1];

  2052.         dst[2]= palette[src[i]*4+2];

  2053.         dst+= 3;

  2054.     }

  2055. }