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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_BGR48BE:\

  702.     case PIX_FMT_BGR48LE:\

  703.         func(uint8_t,0)\

  704.             ((uint8_t*)dest)[ 0] = ((uint8_t*)dest)[ 1] = b[Y1];\

  705.             ((uint8_t*)dest)[ 2] = ((uint8_t*)dest)[ 3] = g[Y1];\

  706.             ((uint8_t*)dest)[ 4] = ((uint8_t*)dest)[ 5] = r[Y1];\

  707.             ((uint8_t*)dest)[ 6] = ((uint8_t*)dest)[ 7] = b[Y2];\

  708.             ((uint8_t*)dest)[ 8] = ((uint8_t*)dest)[ 9] = g[Y2];\

  709.             ((uint8_t*)dest)[10] = ((uint8_t*)dest)[11] = r[Y2];\

  710.             dest+=12;\

  711.         }\

  712.         break;\

  713.     case PIX_FMT_RGBA:\

  714.     case PIX_FMT_BGRA:\

  715.         if (CONFIG_SMALL) {\

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

  717.             func(uint32_t,needAlpha)\

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

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

  720.             }\

  721.         } else {\

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

  723.                 func(uint32_t,1)\

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

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

  726.                 }\

  727.             } else {\

  728.                 func(uint32_t,0)\

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

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

  731.                 }\

  732.             }\

  733.         }\

  734.         break;\

  735.     case PIX_FMT_ARGB:\

  736.     case PIX_FMT_ABGR:\

  737.         if (CONFIG_SMALL) {\

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

  739.             func(uint32_t,needAlpha)\

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

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

  742.             }\

  743.         } else {\

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

  745.                 func(uint32_t,1)\

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

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

  748.                 }\

  749.             } else {\

  750.                 func(uint32_t,0)\

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

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

  753.                 }\

  754.             }\

  755.         }                \

  756.         break;\

  757.     case PIX_FMT_RGB24:\

  758.         func(uint8_t,0)\

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

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

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

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

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

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

  765.             dest+=6;\

  766.         }\

  767.         break;\

  768.     case PIX_FMT_BGR24:\

  769.         func(uint8_t,0)\

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

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

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

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

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

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

  776.             dest+=6;\

  777.         }\

  778.         break;\

  779.     case PIX_FMT_RGB565BE:\

  780.     case PIX_FMT_RGB565LE:\

  781.     case PIX_FMT_BGR565BE:\

  782.     case PIX_FMT_BGR565LE:\

  783.         {\

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

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

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

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

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

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

  790.             func(uint16_t,0)\

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

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

  793.             }\

  794.         }\

  795.         break;\

  796.     case PIX_FMT_RGB555BE:\

  797.     case PIX_FMT_RGB555LE:\

  798.     case PIX_FMT_BGR555BE:\

  799.     case PIX_FMT_BGR555LE:\

  800.         {\

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

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

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

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

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

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

  807.             func(uint16_t,0)\

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

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

  810.             }\

  811.         }\

  812.         break;\

  813.     case PIX_FMT_RGB444BE:\

  814.     case PIX_FMT_RGB444LE:\

  815.     case PIX_FMT_BGR444BE:\

  816.     case PIX_FMT_BGR444LE:\

  817.         {\

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

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

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

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

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

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

  824.             func(uint16_t,0)\

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

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

  827.             }\

  828.         }\

  829.         break;\

  830.     case PIX_FMT_RGB8:\

  831.     case PIX_FMT_BGR8:\

  832.         {\

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

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

  835.             func(uint8_t,0)\

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

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

  838.             }\

  839.         }\

  840.         break;\

  841.     case PIX_FMT_RGB4:\

  842.     case PIX_FMT_BGR4:\

  843.         {\

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

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

  846.             func(uint8_t,0)\

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

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

  849.             }\

  850.         }\

  851.         break;\

  852.     case PIX_FMT_RGB4_BYTE:\

  853.     case PIX_FMT_BGR4_BYTE:\

  854.         {\

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

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

  857.             func(uint8_t,0)\

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

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

  860.             }\

  861.         }\

  862.         break;\

  863.     case PIX_FMT_MONOBLACK:\

  864.     case PIX_FMT_MONOWHITE:\

  865.         {\

  866.             func_monoblack\

  867.         }\

  868.         break;\

  869.     case PIX_FMT_YUYV422:\

  870.         func2\

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

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

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

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

  875.         }                \

  876.         break;\

  877.     case PIX_FMT_UYVY422:\

  878.         func2\

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

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

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

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

  883.         }                \

  884.         break;\

  885.     case PIX_FMT_GRAY16BE:\

  886.         func_g16\

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

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

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

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

  891.         }                \

  892.         break;\

  893.     case PIX_FMT_GRAY16LE:\

  894.         func_g16\

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

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

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

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

  899.         }                \

  900.         break;\

  901.     }

  902. 

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

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

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

  906. {

  907.     int i;

  908.     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)

  909. }

  910. 

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

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

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

  914. {

  915.     int i;

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

  917.     int aidx= 3;

  918. 

  919.     switch(c->dstFormat) {

  920.     case PIX_FMT_ARGB:

  921.         dest++;

  922.         aidx= 0;

  923.     case PIX_FMT_RGB24:

  924.         aidx--;

  925.     case PIX_FMT_RGBA:

  926.         if (CONFIG_SMALL) {

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

  928.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

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

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

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

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

  933.                 dest+= step;

  934.             }

  935.         } else {

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

  937.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  938.                     dest[aidx]= A;

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

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

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

  942.                     dest+= step;

  943.                 }

  944.             } else {

  945.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  946.                     dest[aidx]= 255;

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

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

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

  950.                     dest+= step;

  951.                 }

  952.             }

  953.         }

  954.         break;

  955.     case PIX_FMT_ABGR:

  956.         dest++;

  957.         aidx= 0;

  958.     case PIX_FMT_BGR24:

  959.         aidx--;

  960.     case PIX_FMT_BGRA:

  961.         if (CONFIG_SMALL) {

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

  963.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

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

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

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

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

  968.                 dest+= step;

  969.             }

  970.         } else {

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

  972.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  973.                     dest[aidx]= A;

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

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

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

  977.                     dest+= step;

  978.                 }

  979.             } else {

  980.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  981.                     dest[aidx]= 255;

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

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

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

  985.                     dest+= step;

  986.                 }

  987.             }

  988.         }

  989.         break;

  990.     default:

  991.         assert(0);

  992.     }

  993. }

  994. 

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

  996. {

  997.     int i;

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

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

  1000.         memset(ptr, val, width);

  1001.         ptr += stride;

  1002.     }

  1003. }

  1004. 

  1005. static inline void rgb48ToY(uint8_t *dst, const uint8_t *src, long width,

  1006.                             uint32_t *unused)

  1007. {

  1008.     int i;

  1009.     for (i = 0; i < width; i++) {

  1010.         int r = src[i*6+0];

  1011.         int g = src[i*6+2];

  1012.         int b = src[i*6+4];

  1013. 

  1014.         dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1015.     }

  1016. }

  1017. 

  1018. static inline void rgb48ToUV(uint8_t *dstU, uint8_t *dstV,

  1019.                              const uint8_t *src1, const uint8_t *src2,

  1020.                              long width, uint32_t *unused)

  1021. {

  1022.     int i;

  1023.     assert(src1==src2);

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

  1025.         int r = src1[6*i + 0];

  1026.         int g = src1[6*i + 2];

  1027.         int b = src1[6*i + 4];

  1028. 

  1029.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1030.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1031.     }

  1032. }

  1033. 

  1034. static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1035.                                   const uint8_t *src1, const uint8_t *src2,

  1036.                                   long width, uint32_t *unused)

  1037. {

  1038.     int i;

  1039.     assert(src1==src2);

  1040.     for (i = 0; i < width; i++) {

  1041.         int r= src1[12*i + 0] + src1[12*i + 6];

  1042.         int g= src1[12*i + 2] + src1[12*i + 8];

  1043.         int b= src1[12*i + 4] + src1[12*i + 10];

  1044. 

  1045.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1046.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1047.     }

  1048. }

  1049. 

  1050. static inline void bgr48ToY(uint8_t *dst, const uint8_t *src, long width,

  1051.                             uint32_t *unused)

  1052. {

  1053.     int i;

  1054.     for (i = 0; i < width; i++) {

  1055.         int b = src[i*6+0];

  1056.         int g = src[i*6+2];

  1057.         int r = src[i*6+4];

  1058. 

  1059.         dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1060.     }

  1061. }

  1062. 

  1063. static inline void bgr48ToUV(uint8_t *dstU, uint8_t *dstV,

  1064.                              const uint8_t *src1, const uint8_t *src2,

  1065.                              long width, uint32_t *unused)

  1066. {

  1067.     int i;

  1068.     for (i = 0; i < width; i++) {

  1069.         int b = src1[6*i + 0];

  1070.         int g = src1[6*i + 2];

  1071.         int r = src1[6*i + 4];

  1072. 

  1073.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1074.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1075.     }

  1076. }

  1077. 

  1078. static inline void bgr48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1079.                                   const uint8_t *src1, const uint8_t *src2,

  1080.                                   long width, uint32_t *unused)

  1081. {

  1082.     int i;

  1083.     for (i = 0; i < width; i++) {

  1084.         int b= src1[12*i + 0] + src1[12*i + 6];

  1085.         int g= src1[12*i + 2] + src1[12*i + 8];

  1086.         int r= src1[12*i + 4] + src1[12*i + 10];

  1087. 

  1088.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1089.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1090.     }

  1091. }

  1092. 

  1093. #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\

  1094. static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\

  1095. {\

  1096.     int i;\

  1097.     for (i=0; i<width; i++) {\

  1098.         int b= (((const type*)src)[i]>>shb)&maskb;\

  1099.         int g= (((const type*)src)[i]>>shg)&maskg;\

  1100.         int r= (((const type*)src)[i]>>shr)&maskr;\

  1101. \

  1102.         dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\

  1103.     }\

  1104. }

  1105. 

  1106. BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1107. BGR2Y(uint32_t,bgr321ToY,16,16, 0, 0xFF00, 0x00FF, 0xFF00, RY    , GY<<8, BY    , RGB2YUV_SHIFT+8)

  1108. BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1109. BGR2Y(uint32_t,rgb321ToY, 0,16,16, 0xFF00, 0x00FF, 0xFF00, RY    , GY<<8, BY    , RGB2YUV_SHIFT+8)

  1110. BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)

  1111. BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)

  1112. BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)

  1113. BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)

  1114. 

  1115. static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1116. {

  1117.     int i;

  1118.     for (i=0; i<width; i++) {

  1119.         dst[i]= src[4*i];

  1120.     }

  1121. }

  1122. 

  1123. #define BGR2UV(type, name, shr, shg, shb, shp, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S) \

  1124. static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1125. {\

  1126.     int i;\

  1127.     for (i=0; i<width; i++) {\

  1128.         int b= ((((const type*)src)[i]>>shp)&maskb)>>shb;\

  1129.         int g= ((((const type*)src)[i]>>shp)&maskg)>>shg;\

  1130.         int r= ((((const type*)src)[i]>>shp)&maskr)>>shr;\

  1131. \

  1132.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\

  1133.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\

  1134.     }\

  1135. }\

  1136. static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1137. {\

  1138.     int i;\

  1139.     for (i=0; i<width; i++) {\

  1140.         int pix0= ((const type*)src)[2*i+0]>>shp;\

  1141.         int pix1= ((const type*)src)[2*i+1]>>shp;\

  1142.         int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\

  1143.         int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\

  1144.         int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\

  1145.         g&= maskg|(2*maskg);\

  1146. \

  1147.         g>>=shg;\

  1148. \

  1149.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\

  1150.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\

  1151.     }\

  1152. }

  1153. 

  1154. BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1155. BGR2UV(uint32_t,bgr321ToUV,16, 0, 0, 8, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1156. BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1157. BGR2UV(uint32_t,rgb321ToUV, 0, 0,16, 8,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1158. BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0, 0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)

  1159. BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0, 0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)

  1160. BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0, 0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)

  1161. BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0, 0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)

  1162. 

  1163. static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)

  1164. {

  1165.     int i;

  1166.     for (i=0; i<width; i++) {

  1167.         int d= src[i];

  1168. 

  1169.         dst[i]= pal[d] & 0xFF;

  1170.     }

  1171. }

  1172. 

  1173. static inline void palToUV(uint8_t *dstU, uint8_t *dstV,

  1174.                            const uint8_t *src1, const uint8_t *src2,

  1175.                            long width, uint32_t *pal)

  1176. {

  1177.     int i;

  1178.     assert(src1 == src2);

  1179.     for (i=0; i<width; i++) {

  1180.         int p= pal[src1[i]];

  1181. 

  1182.         dstU[i]= p>>8;

  1183.         dstV[i]= p>>16;

  1184.     }

  1185. }

  1186. 

  1187. static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1188. {

  1189.     int i, j;

  1190.     for (i=0; i<width/8; i++) {

  1191.         int d= ~src[i];

  1192.         for(j=0; j<8; j++)

  1193.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1194.     }

  1195. }

  1196. 

  1197. static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1198. {

  1199.     int i, j;

  1200.     for (i=0; i<width/8; i++) {

  1201.         int d= src[i];

  1202.         for(j=0; j<8; j++)

  1203.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1204.     }

  1205. }

  1206. 

  1207. //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one

  1208. //Plain C versions

  1209. #if CONFIG_RUNTIME_CPUDETECT

  1210. #  define COMPILE_C 1

  1211. #  if   ARCH_X86

  1212. #    define COMPILE_MMX     1

  1213. #    define COMPILE_MMX2    1

  1214. #    define COMPILE_3DNOW   1

  1215. #  elif ARCH_PPC

  1216. #    define COMPILE_ALTIVEC HAVE_ALTIVEC

  1217. #  endif

  1218. #else /* CONFIG_RUNTIME_CPUDETECT */

  1219. #  if   ARCH_X86

  1220. #    if   HAVE_MMX2

  1221. #      define COMPILE_MMX2  1

  1222. #    elif HAVE_AMD3DNOW

  1223. #      define COMPILE_3DNOW 1

  1224. #    elif HAVE_MMX

  1225. #      define COMPILE_MMX   1

  1226. #    else

  1227. #      define COMPILE_C     1

  1228. #    endif

  1229. #  elif ARCH_PPC && HAVE_ALTIVEC

  1230. #    define COMPILE_ALTIVEC 1

  1231. #  else

  1232. #    define COMPILE_C       1

  1233. #  endif

  1234. #endif

  1235. 

  1236. #ifndef COMPILE_C

  1237. #  define COMPILE_C 0

  1238. #endif

  1239. #ifndef COMPILE_MMX

  1240. #  define COMPILE_MMX 0

  1241. #endif

  1242. #ifndef COMPILE_MMX2

  1243. #  define COMPILE_MMX2 0

  1244. #endif

  1245. #ifndef COMPILE_3DNOW

  1246. #  define COMPILE_3DNOW 0

  1247. #endif

  1248. #ifndef COMPILE_ALTIVEC

  1249. #  define COMPILE_ALTIVEC 0

  1250. #endif

  1251. 

  1252. #define COMPILE_TEMPLATE_MMX 0

  1253. #define COMPILE_TEMPLATE_MMX2 0

  1254. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1255. #define COMPILE_TEMPLATE_ALTIVEC 0

  1256. 

  1257. #if COMPILE_C

  1258. #define RENAME(a) a ## _C

  1259. #include "swscale_template.c"

  1260. #endif

  1261. 

  1262. #if COMPILE_ALTIVEC

  1263. #undef RENAME

  1264. #undef COMPILE_TEMPLATE_ALTIVEC

  1265. #define COMPILE_TEMPLATE_ALTIVEC 1

  1266. #define RENAME(a) a ## _altivec

  1267. #include "swscale_template.c"

  1268. #endif

  1269. 

  1270. #if ARCH_X86

  1271. 

  1272. //MMX versions

  1273. #if COMPILE_MMX

  1274. #undef RENAME

  1275. #undef COMPILE_TEMPLATE_MMX

  1276. #undef COMPILE_TEMPLATE_MMX2

  1277. #undef COMPILE_TEMPLATE_AMD3DNOW

  1278. #define COMPILE_TEMPLATE_MMX 1

  1279. #define COMPILE_TEMPLATE_MMX2 0

  1280. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1281. #define RENAME(a) a ## _MMX

  1282. #include "swscale_template.c"

  1283. #endif

  1284. 

  1285. //MMX2 versions

  1286. #if COMPILE_MMX2

  1287. #undef RENAME

  1288. #undef COMPILE_TEMPLATE_MMX

  1289. #undef COMPILE_TEMPLATE_MMX2

  1290. #undef COMPILE_TEMPLATE_AMD3DNOW

  1291. #define COMPILE_TEMPLATE_MMX 1

  1292. #define COMPILE_TEMPLATE_MMX2 1

  1293. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1294. #define RENAME(a) a ## _MMX2

  1295. #include "swscale_template.c"

  1296. #endif

  1297. 

  1298. //3DNOW versions

  1299. #if COMPILE_3DNOW

  1300. #undef RENAME

  1301. #undef COMPILE_TEMPLATE_MMX

  1302. #undef COMPILE_TEMPLATE_MMX2

  1303. #undef COMPILE_TEMPLATE_AMD3DNOW

  1304. #define COMPILE_TEMPLATE_MMX 1

  1305. #define COMPILE_TEMPLATE_MMX2 0

  1306. #define COMPILE_TEMPLATE_AMD3DNOW 1

  1307. #define RENAME(a) a ## _3DNow

  1308. #include "swscale_template.c"

  1309. #endif

  1310. 

  1311. #endif //ARCH_X86

  1312. 

  1313. SwsFunc ff_getSwsFunc(SwsContext *c)

  1314. {

  1315. #if CONFIG_RUNTIME_CPUDETECT

  1316.     int flags = c->flags;

  1317. 

  1318. #if ARCH_X86

  1319.     // ordered per speed fastest first

  1320.     if (flags & SWS_CPU_CAPS_MMX2) {

  1321.         sws_init_swScale_MMX2(c);

  1322.         return swScale_MMX2;

  1323.     } else if (flags & SWS_CPU_CAPS_3DNOW) {

  1324.         sws_init_swScale_3DNow(c);

  1325.         return swScale_3DNow;

  1326.     } else if (flags & SWS_CPU_CAPS_MMX) {

  1327.         sws_init_swScale_MMX(c);

  1328.         return swScale_MMX;

  1329.     } else {

  1330.         sws_init_swScale_C(c);

  1331.         return swScale_C;

  1332.     }

  1333. 

  1334. #else

  1335. #if COMPILE_ALTIVEC

  1336.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1337.         sws_init_swScale_altivec(c);

  1338.         return swScale_altivec;

  1339.     } else {

  1340.         sws_init_swScale_C(c);

  1341.         return swScale_C;

  1342.     }

  1343. #endif

  1344.     sws_init_swScale_C(c);

  1345.     return swScale_C;

  1346. #endif /* ARCH_X86 */

  1347. #else //CONFIG_RUNTIME_CPUDETECT

  1348. #if   COMPILE_TEMPLATE_MMX2

  1349.     sws_init_swScale_MMX2(c);

  1350.     return swScale_MMX2;

  1351. #elif COMPILE_TEMPLATE_AMD3DNOW

  1352.     sws_init_swScale_3DNow(c);

  1353.     return swScale_3DNow;

  1354. #elif COMPILE_TEMPLATE_MMX

  1355.     sws_init_swScale_MMX(c);

  1356.     return swScale_MMX;

  1357. #elif COMPILE_TEMPLATE_ALTIVEC

  1358.     sws_init_swScale_altivec(c);

  1359.     return swScale_altivec;

  1360. #else

  1361.     sws_init_swScale_C(c);

  1362.     return swScale_C;

  1363. #endif

  1364. #endif //!CONFIG_RUNTIME_CPUDETECT

  1365. }

  1366. 

  1367. static void copyPlane(const uint8_t *src, int srcStride,

  1368.                       int srcSliceY, int srcSliceH, int width,

  1369.                       uint8_t *dst, int dstStride)

  1370. {

  1371.     dst += dstStride * srcSliceY;

  1372.     if (dstStride == srcStride && srcStride > 0) {

  1373.         memcpy(dst, src, srcSliceH * dstStride);

  1374.     } else {

  1375.         int i;

  1376.         for (i=0; i<srcSliceH; i++) {

  1377.             memcpy(dst, src, width);

  1378.             src += srcStride;

  1379.             dst += dstStride;

  1380.         }

  1381.     }

  1382. }

  1383. 

  1384. static int planarToNv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1385.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1386. {

  1387.     uint8_t *dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1388. 

  1389.     copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,

  1390.               dstParam[0], dstStride[0]);

  1391. 

  1392.     if (c->dstFormat == PIX_FMT_NV12)

  1393.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  1394.     else

  1395.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  1396. 

  1397.     return srcSliceH;

  1398. }

  1399. 

  1400. static int planarToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

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

  1402. {

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

  1404. 

  1405.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1406. 

  1407.     return srcSliceH;

  1408. }

  1409. 

  1410. static int planarToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1411.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1412. {

  1413.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1414. 

  1415.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1416. 

  1417.     return srcSliceH;

  1418. }

  1419. 

  1420. static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1421.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1422. {

  1423.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1424. 

  1425.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1426. 

  1427.     return srcSliceH;

  1428. }

  1429. 

  1430. static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1431.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1432. {

  1433.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1434. 

  1435.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1436. 

  1437.     return srcSliceH;

  1438. }

  1439. 

  1440. static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1441.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1442. {

  1443.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1444.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  1445.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  1446. 

  1447.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1448. 

  1449.     if (dstParam[3])

  1450.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1451. 

  1452.     return srcSliceH;

  1453. }

  1454. 

  1455. static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1456.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1457. {

  1458.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1459.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  1460.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  1461. 

  1462.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1463. 

  1464.     return srcSliceH;

  1465. }

  1466. 

  1467. static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

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

  1469. {

  1470.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1471.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  1472.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  1473. 

  1474.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1475. 

  1476.     if (dstParam[3])

  1477.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1478. 

  1479.     return srcSliceH;

  1480. }

  1481. 

  1482. static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1483.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1484. {

  1485.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1486.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  1487.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  1488. 

  1489.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1490. 

  1491.     return srcSliceH;

  1492. }

  1493. 

  1494. static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  1495. {

  1496.     long i;

  1497.     for (i=0; i<num_pixels; i++)

  1498.         ((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | (src[(i<<1)+1] << 24);

  1499. }

  1500. 

  1501. static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  1502. {

  1503.     long i;

  1504. 

  1505.     for (i=0; i<num_pixels; i++)

  1506.         ((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | src[(i<<1)+1];

  1507. }

  1508. 

  1509. static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  1510. {

  1511.     long i;

  1512. 

  1513.     for (i=0; i<num_pixels; i++) {

  1514.         //FIXME slow?

  1515.         dst[0]= palette[src[i<<1]*4+0];

  1516.         dst[1]= palette[src[i<<1]*4+1];

  1517.         dst[2]= palette[src[i<<1]*4+2];

  1518.         dst+= 3;

  1519.     }

  1520. }

  1521. 

  1522. static int palToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1523.                            int srcSliceH, uint8_t* dst[], int dstStride[])

  1524. {

  1525.     const enum PixelFormat srcFormat= c->srcFormat;

  1526.     const enum PixelFormat dstFormat= c->dstFormat;

  1527.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  1528.                  const uint8_t *palette)=NULL;

  1529.     int i;

  1530.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1531.     const uint8_t *srcPtr= src[0];

  1532. 

  1533.     if (srcFormat == PIX_FMT_Y400A) {

  1534.         switch (dstFormat) {

  1535.         case PIX_FMT_RGB32  : conv = gray8aToPacked32; break;

  1536.         case PIX_FMT_BGR32  : conv = gray8aToPacked32; break;

  1537.         case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;

  1538.         case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;

  1539.         case PIX_FMT_RGB24  : conv = gray8aToPacked24; break;

  1540.         case PIX_FMT_BGR24  : conv = gray8aToPacked24; break;

  1541.         }

  1542.     } else if (usePal(srcFormat)) {

  1543.         switch (dstFormat) {

  1544.         case PIX_FMT_RGB32  : conv = sws_convertPalette8ToPacked32; break;

  1545.         case PIX_FMT_BGR32  : conv = sws_convertPalette8ToPacked32; break;

  1546.         case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;

  1547.         case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;

  1548.         case PIX_FMT_RGB24  : conv = sws_convertPalette8ToPacked24; break;

  1549.         case PIX_FMT_BGR24  : conv = sws_convertPalette8ToPacked24; break;

  1550.         }

  1551.     }

  1552. 

  1553.     if (!conv)

  1554.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1555.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1556.     else {

  1557.         for (i=0; i<srcSliceH; i++) {

  1558.             conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  1559.             srcPtr+= srcStride[0];

  1560.             dstPtr+= dstStride[0];

  1561.         }

  1562.     }

  1563. 

  1564.     return srcSliceH;

  1565. }

  1566. 

  1567. #define isRGBA32(x) (            \

  1568.            (x) == PIX_FMT_ARGB   \

  1569.         || (x) == PIX_FMT_RGBA   \

  1570.         || (x) == PIX_FMT_BGRA   \

  1571.         || (x) == PIX_FMT_ABGR   \

  1572.         )

  1573. 

  1574. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  1575. static int rgbToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1576.                            int srcSliceH, uint8_t* dst[], int dstStride[])

  1577. {

  1578.     const enum PixelFormat srcFormat= c->srcFormat;

  1579.     const enum PixelFormat dstFormat= c->dstFormat;

  1580.     const int srcBpp= (c->srcFormatBpp + 7) >> 3;

  1581.     const int dstBpp= (c->dstFormatBpp + 7) >> 3;

  1582.     const int srcId= c->srcFormatBpp >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1583.     const int dstId= c->dstFormatBpp >> 2;

  1584.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1585. 

  1586. #define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)

  1587. 

  1588.     if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {

  1589.         if (     CONV_IS(ABGR, RGBA)

  1590.               || CONV_IS(ARGB, BGRA)

  1591.               || CONV_IS(BGRA, ARGB)

  1592.               || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;

  1593.         else if (CONV_IS(ABGR, ARGB)

  1594.               || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;

  1595.         else if (CONV_IS(ABGR, BGRA)

  1596.               || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;

  1597.         else if (CONV_IS(BGRA, RGBA)

  1598.               || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;

  1599.         else if (CONV_IS(BGRA, ABGR)

  1600.               || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;

  1601.     } else

  1602.     /* BGR -> BGR */

  1603.     if (  (isBGRinInt(srcFormat) && isBGRinInt(dstFormat))

  1604.        || (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {

  1605.         switch(srcId | (dstId<<4)) {

  1606.         case 0x34: conv= rgb16to15; break;

  1607.         case 0x36: conv= rgb24to15; break;

  1608.         case 0x38: conv= rgb32to15; break;

  1609.         case 0x43: conv= rgb15to16; break;

  1610.         case 0x46: conv= rgb24to16; break;

  1611.         case 0x48: conv= rgb32to16; break;

  1612.         case 0x63: conv= rgb15to24; break;

  1613.         case 0x64: conv= rgb16to24; break;

  1614.         case 0x68: conv= rgb32to24; break;

  1615.         case 0x83: conv= rgb15to32; break;

  1616.         case 0x84: conv= rgb16to32; break;

  1617.         case 0x86: conv= rgb24to32; break;

  1618.         }

  1619.     } else if (  (isBGRinInt(srcFormat) && isRGBinInt(dstFormat))

  1620.              || (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {

  1621.         switch(srcId | (dstId<<4)) {

  1622.         case 0x33: conv= rgb15tobgr15; break;

  1623.         case 0x34: conv= rgb16tobgr15; break;

  1624.         case 0x36: conv= rgb24tobgr15; break;

  1625.         case 0x38: conv= rgb32tobgr15; break;

  1626.         case 0x43: conv= rgb15tobgr16; break;

  1627.         case 0x44: conv= rgb16tobgr16; break;

  1628.         case 0x46: conv= rgb24tobgr16; break;

  1629.         case 0x48: conv= rgb32tobgr16; break;

  1630.         case 0x63: conv= rgb15tobgr24; break;

  1631.         case 0x64: conv= rgb16tobgr24; break;

  1632.         case 0x66: conv= rgb24tobgr24; break;

  1633.         case 0x68: conv= rgb32tobgr24; break;

  1634.         case 0x83: conv= rgb15tobgr32; break;

  1635.         case 0x84: conv= rgb16tobgr32; break;

  1636.         case 0x86: conv= rgb24tobgr32; break;

  1637.         }

  1638.     }

  1639. 

  1640.     if (!conv) {

  1641.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1642.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1643.     } else {

  1644.         const uint8_t *srcPtr= src[0];

  1645.               uint8_t *dstPtr= dst[0];

  1646.         if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) && !isRGBA32(dstFormat))

  1647.             srcPtr += ALT32_CORR;

  1648. 

  1649.         if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) && !isRGBA32(srcFormat))

  1650.             dstPtr += ALT32_CORR;

  1651. 

  1652.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  1653.             conv(srcPtr, dstPtr + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1654.         else {

  1655.             int i;

  1656.             dstPtr += dstStride[0]*srcSliceY;

  1657. 

  1658.             for (i=0; i<srcSliceH; i++) {

  1659.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1660.                 srcPtr+= srcStride[0];

  1661.                 dstPtr+= dstStride[0];

  1662.             }

  1663.         }

  1664.     }

  1665.     return srcSliceH;

  1666. }

  1667. 

  1668. static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1669.                               int srcSliceH, uint8_t* dst[], int dstStride[])

  1670. {

  1671.     rgb24toyv12(

  1672.         src[0],

  1673.         dst[0]+ srcSliceY    *dstStride[0],

  1674.         dst[1]+(srcSliceY>>1)*dstStride[1],

  1675.         dst[2]+(srcSliceY>>1)*dstStride[2],

  1676.         c->srcW, srcSliceH,

  1677.         dstStride[0], dstStride[1], srcStride[0]);

  1678.     if (dst[3])

  1679.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1680.     return srcSliceH;

  1681. }

  1682. 

  1683. static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1684.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1685. {

  1686.     copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,

  1687.               dst[0], dstStride[0]);

  1688. 

  1689.     planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  1690.              srcSliceH >> 2, srcStride[1], dstStride[1]);

  1691.     planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  1692.              srcSliceH >> 2, srcStride[2], dstStride[2]);

  1693.     if (dst[3])

  1694.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1695.     return srcSliceH;

  1696. }

  1697. 

  1698. /* unscaled copy like stuff (assumes nearly identical formats) */

  1699. static int packedCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1700.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1701. {

  1702.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1703.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1704.     else {

  1705.         int i;

  1706.         const uint8_t *srcPtr= src[0];

  1707.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1708.         int length=0;

  1709. 

  1710.         /* universal length finder */

  1711.         while(length+c->srcW <= FFABS(dstStride[0])

  1712.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  1713.         assert(length!=0);

  1714. 

  1715.         for (i=0; i<srcSliceH; i++) {

  1716.             memcpy(dstPtr, srcPtr, length);

  1717.             srcPtr+= srcStride[0];

  1718.             dstPtr+= dstStride[0];

  1719.         }

  1720.     }

  1721.     return srcSliceH;

  1722. }

  1723. 

  1724. static int planarCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1725.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1726. {

  1727.     int plane, i, j;

  1728.     for (plane=0; plane<4; plane++) {

  1729.         int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1730.         int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1731.         int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1732.         const uint8_t *srcPtr= src[plane];

  1733.         uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  1734. 

  1735.         if (!dst[plane]) continue;

  1736.         // ignore palette for GRAY8

  1737.         if (plane == 1 && !dst[2]) continue;

  1738.         if (!src[plane] || (plane == 1 && !src[2])) {

  1739.             if(is16BPS(c->dstFormat))

  1740.                 length*=2;

  1741.             fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);

  1742.         } else {

  1743.             if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {

  1744.                 if (!isBE(c->srcFormat)) srcPtr++;

  1745.                 for (i=0; i<height; i++) {

  1746.                     for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  1747.                     srcPtr+= srcStride[plane];

  1748.                     dstPtr+= dstStride[plane];

  1749.                 }

  1750.             } else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {

  1751.                 for (i=0; i<height; i++) {

  1752.                     for (j=0; j<length; j++) {

  1753.                         dstPtr[ j<<1   ] = srcPtr[j];

  1754.                         dstPtr[(j<<1)+1] = srcPtr[j];

  1755.                     }

  1756.                     srcPtr+= srcStride[plane];

  1757.                     dstPtr+= dstStride[plane];

  1758.                 }

  1759.             } else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)

  1760.                   && isBE(c->srcFormat) != isBE(c->dstFormat)) {

  1761. 

  1762.                 for (i=0; i<height; i++) {

  1763.                     for (j=0; j<length; j++)

  1764.                         ((uint16_t*)dstPtr)[j] = av_bswap16(((const uint16_t*)srcPtr)[j]);

  1765.                     srcPtr+= srcStride[plane];

  1766.                     dstPtr+= dstStride[plane];

  1767.                 }

  1768.             } else if (dstStride[plane] == srcStride[plane] &&

  1769.                        srcStride[plane] > 0 && srcStride[plane] == length) {

  1770.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane],

  1771.                        height*dstStride[plane]);

  1772.             } else {

  1773.                 if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))

  1774.                     length*=2;

  1775.                 for (i=0; i<height; i++) {

  1776.                     memcpy(dstPtr, srcPtr, length);

  1777.                     srcPtr+= srcStride[plane];

  1778.                     dstPtr+= dstStride[plane];

  1779.                 }

  1780.             }

  1781.         }

  1782.     }

  1783.     return srcSliceH;

  1784. }

  1785. 

  1786. int ff_hardcodedcpuflags(void)

  1787. {

  1788.     int flags = 0;

  1789. #if   COMPILE_TEMPLATE_MMX2

  1790.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  1791. #elif COMPILE_TEMPLATE_AMD3DNOW

  1792.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  1793. #elif COMPILE_TEMPLATE_MMX

  1794.     flags |= SWS_CPU_CAPS_MMX;

  1795. #elif COMPILE_TEMPLATE_ALTIVEC

  1796.     flags |= SWS_CPU_CAPS_ALTIVEC;

  1797. #elif ARCH_BFIN

  1798.     flags |= SWS_CPU_CAPS_BFIN;

  1799. #endif

  1800.     return flags;

  1801. }

  1802. 

  1803. void ff_get_unscaled_swscale(SwsContext *c)

  1804. {

  1805.     const enum PixelFormat srcFormat = c->srcFormat;

  1806.     const enum PixelFormat dstFormat = c->dstFormat;

  1807.     const int flags = c->flags;

  1808.     const int dstH = c->dstH;

  1809.     int needsDither;

  1810. 

  1811.     needsDither= isAnyRGB(dstFormat)

  1812.         &&  c->dstFormatBpp < 24

  1813.         && (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));

  1814. 

  1815.     /* yv12_to_nv12 */

  1816.     if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {

  1817.         c->swScale= planarToNv12Wrapper;

  1818.     }

  1819.     /* yuv2bgr */

  1820.     if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && isAnyRGB(dstFormat)

  1821.         && !(flags & SWS_ACCURATE_RND) && !(dstH&1)) {

  1822.         c->swScale= ff_yuv2rgb_get_func_ptr(c);

  1823.     }

  1824. 

  1825.     if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT)) {

  1826.         c->swScale= yvu9ToYv12Wrapper;

  1827.     }

  1828. 

  1829.     /* bgr24toYV12 */

  1830.     if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))

  1831.         c->swScale= bgr24ToYv12Wrapper;

  1832. 

  1833.     /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  1834.     if (   isAnyRGB(srcFormat)

  1835.         && isAnyRGB(dstFormat)

  1836.         && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  1837.         && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  1838.         && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  1839.         && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  1840.         && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  1841.         && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  1842.         && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  1843.         && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  1844.         && srcFormat != PIX_FMT_RGB48LE   && dstFormat != PIX_FMT_RGB48LE

  1845.         && srcFormat != PIX_FMT_RGB48BE   && dstFormat != PIX_FMT_RGB48BE

  1846.         && srcFormat != PIX_FMT_BGR48LE   && dstFormat != PIX_FMT_BGR48LE

  1847.         && srcFormat != PIX_FMT_BGR48BE   && dstFormat != PIX_FMT_BGR48BE

  1848.         && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  1849.         c->swScale= rgbToRgbWrapper;

  1850. 

  1851.     if ((usePal(srcFormat) && (

  1852.         dstFormat == PIX_FMT_RGB32   ||

  1853.         dstFormat == PIX_FMT_RGB32_1 ||

  1854.         dstFormat == PIX_FMT_RGB24   ||

  1855.         dstFormat == PIX_FMT_BGR32   ||

  1856.         dstFormat == PIX_FMT_BGR32_1 ||

  1857.         dstFormat == PIX_FMT_BGR24)))

  1858.         c->swScale= palToRgbWrapper;

  1859. 

  1860.     if (srcFormat == PIX_FMT_YUV422P) {

  1861.         if (dstFormat == PIX_FMT_YUYV422)

  1862.             c->swScale= yuv422pToYuy2Wrapper;

  1863.         else if (dstFormat == PIX_FMT_UYVY422)

  1864.             c->swScale= yuv422pToUyvyWrapper;

  1865.     }

  1866. 

  1867.     /* LQ converters if -sws 0 or -sws 4*/

  1868.     if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {

  1869.         /* yv12_to_yuy2 */

  1870.         if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {

  1871.             if (dstFormat == PIX_FMT_YUYV422)

  1872.                 c->swScale= planarToYuy2Wrapper;

  1873.             else if (dstFormat == PIX_FMT_UYVY422)

  1874.                 c->swScale= planarToUyvyWrapper;

  1875.         }

  1876.     }

  1877.     if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  1878.         c->swScale= yuyvToYuv420Wrapper;

  1879.     if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  1880.         c->swScale= uyvyToYuv420Wrapper;

  1881.     if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)

  1882.         c->swScale= yuyvToYuv422Wrapper;

  1883.     if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)

  1884.         c->swScale= uyvyToYuv422Wrapper;

  1885. 

  1886. #if COMPILE_ALTIVEC

  1887.     if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  1888.         !(c->flags & SWS_BITEXACT) &&

  1889.         srcFormat == PIX_FMT_YUV420P) {

  1890.         // unscaled YV12 -> packed YUV, we want speed

  1891.         if (dstFormat == PIX_FMT_YUYV422)

  1892.             c->swScale= yv12toyuy2_unscaled_altivec;

  1893.         else if (dstFormat == PIX_FMT_UYVY422)

  1894.             c->swScale= yv12touyvy_unscaled_altivec;

  1895.     }

  1896. #endif

  1897. 

  1898.     /* simple copy */

  1899.     if (  srcFormat == dstFormat

  1900.         || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)

  1901.         || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)

  1902.         || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  1903.         || (isPlanarYUV(dstFormat) && isGray(srcFormat))

  1904.         || (isGray(dstFormat) && isGray(srcFormat))

  1905.         || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)

  1906.             && c->chrDstHSubSample == c->chrSrcHSubSample

  1907.             && c->chrDstVSubSample == c->chrSrcVSubSample

  1908.             && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21

  1909.             && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))

  1910.     {

  1911.         if (isPacked(c->srcFormat))

  1912.             c->swScale= packedCopyWrapper;

  1913.         else /* Planar YUV or gray */

  1914.             c->swScale= planarCopyWrapper;

  1915.     }

  1916. #if ARCH_BFIN

  1917.     if (flags & SWS_CPU_CAPS_BFIN)

  1918.         ff_bfin_get_unscaled_swscale (c);

  1919. #endif

  1920. }

  1921. 

  1922. static void reset_ptr(const uint8_t* src[], int format)

  1923. {

  1924.     if(!isALPHA(format))

  1925.         src[3]=NULL;

  1926.     if(!isPlanarYUV(format)) {

  1927.         src[3]=src[2]=NULL;

  1928. 

  1929.         if (!usePal(format))

  1930.             src[1]= NULL;

  1931.     }

  1932. }

  1933. 

  1934. static int check_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt,

  1935.                                 const int linesizes[4])

  1936. {

  1937.     const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];

  1938.     int i;

  1939. 

  1940.     for (i = 0; i < 4; i++) {

  1941.         int plane = desc->comp[i].plane;

  1942.         if (!data[plane] || !linesizes[plane])

  1943.             return 0;

  1944.     }

  1945. 

  1946.     return 1;

  1947. }

  1948. 

  1949. /**

  1950.  * swscale wrapper, so we don't need to export the SwsContext.

  1951.  * Assumes planar YUV to be in YUV order instead of YVU.

  1952.  */

  1953. int sws_scale(SwsContext *c, const uint8_t* const src[], const int srcStride[], int srcSliceY,

  1954.               int srcSliceH, uint8_t* const dst[], const int dstStride[])

  1955. {

  1956.     int i;

  1957.     const uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};

  1958.     uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};

  1959. 

  1960.     // do not mess up sliceDir if we have a "trailing" 0-size slice

  1961.     if (srcSliceH == 0)

  1962.         return 0;

  1963. 

  1964.     if (!check_image_pointers(src, c->srcFormat, srcStride)) {

  1965.         av_log(c, AV_LOG_ERROR, "bad src image pointers\n");

  1966.         return 0;

  1967.     }

  1968.     if (!check_image_pointers(dst, c->dstFormat, dstStride)) {

  1969.         av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");

  1970.         return 0;

  1971.     }

  1972. 

  1973.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  1974.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  1975.         return 0;

  1976.     }

  1977.     if (c->sliceDir == 0) {

  1978.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  1979.     }

  1980. 

  1981.     if (usePal(c->srcFormat)) {

  1982.         for (i=0; i<256; i++) {

  1983.             int p, r, g, b,y,u,v;

  1984.             if(c->srcFormat == PIX_FMT_PAL8) {

  1985.                 p=((const uint32_t*)(src[1]))[i];

  1986.                 r= (p>>16)&0xFF;

  1987.                 g= (p>> 8)&0xFF;

  1988.                 b=  p     &0xFF;

  1989.             } else if(c->srcFormat == PIX_FMT_RGB8) {

  1990.                 r= (i>>5    )*36;

  1991.                 g= ((i>>2)&7)*36;

  1992.                 b= (i&3     )*85;

  1993.             } else if(c->srcFormat == PIX_FMT_BGR8) {

  1994.                 b= (i>>6    )*85;

  1995.                 g= ((i>>3)&7)*36;

  1996.                 r= (i&7     )*36;

  1997.             } else if(c->srcFormat == PIX_FMT_RGB4_BYTE) {

  1998.                 r= (i>>3    )*255;

  1999.                 g= ((i>>1)&3)*85;

  2000.                 b= (i&1     )*255;

  2001.             } else if(c->srcFormat == PIX_FMT_GRAY8 || c->srcFormat == PIX_FMT_Y400A) {

  2002.                 r = g = b = i;

  2003.             } else {

  2004.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  2005.                 b= (i>>3    )*255;

  2006.                 g= ((i>>1)&3)*85;

  2007.                 r= (i&1     )*255;

  2008.             }

  2009.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2010.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2011.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2012.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  2013. 

  2014.             switch(c->dstFormat) {

  2015.             case PIX_FMT_BGR32:

  2016. #if !HAVE_BIGENDIAN

  2017.             case PIX_FMT_RGB24:

  2018. #endif

  2019.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  2020.                 break;

  2021.             case PIX_FMT_BGR32_1:

  2022. #if HAVE_BIGENDIAN

  2023.             case PIX_FMT_BGR24:

  2024. #endif

  2025.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  2026.                 break;

  2027.             case PIX_FMT_RGB32_1:

  2028. #if HAVE_BIGENDIAN

  2029.             case PIX_FMT_RGB24:

  2030. #endif

  2031.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  2032.                 break;

  2033.             case PIX_FMT_RGB32:

  2034. #if !HAVE_BIGENDIAN

  2035.             case PIX_FMT_BGR24:

  2036. #endif

  2037.             default:

  2038.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  2039.             }

  2040.         }

  2041.     }

  2042. 

  2043.     // copy strides, so they can safely be modified

  2044.     if (c->sliceDir == 1) {

  2045.         // slices go from top to bottom

  2046.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};

  2047.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};

  2048. 

  2049.         reset_ptr(src2, c->srcFormat);

  2050.         reset_ptr((const uint8_t**)dst2, c->dstFormat);

  2051. 

  2052.         /* reset slice direction at end of frame */

  2053.         if (srcSliceY + srcSliceH == c->srcH)

  2054.             c->sliceDir = 0;

  2055. 

  2056.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);

  2057.     } else {

  2058.         // slices go from bottom to top => we flip the image internally

  2059.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};

  2060.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};

  2061. 

  2062.         src2[0] += (srcSliceH-1)*srcStride[0];

  2063.         if (!usePal(c->srcFormat))

  2064.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  2065.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  2066.         src2[3] += (srcSliceH-1)*srcStride[3];

  2067.         dst2[0] += ( c->dstH                      -1)*dstStride[0];

  2068.         dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];

  2069.         dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];

  2070.         dst2[3] += ( c->dstH                      -1)*dstStride[3];

  2071. 

  2072.         reset_ptr(src2, c->srcFormat);

  2073.         reset_ptr((const uint8_t**)dst2, c->dstFormat);

  2074. 

  2075.         /* reset slice direction at end of frame */

  2076.         if (!srcSliceY)

  2077.             c->sliceDir = 0;

  2078. 

  2079.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  2080.     }

  2081. }

  2082. 

  2083. #if LIBSWSCALE_VERSION_MAJOR < 1

  2084. int sws_scale_ordered(SwsContext *c, const uint8_t* const src[], int srcStride[], int srcSliceY,

  2085.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2086. {

  2087.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  2088. }

  2089. #endif

  2090. 

  2091. /* Convert the palette to the same packed 32-bit format as the palette */

  2092. void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  2093. {

  2094.     long i;

  2095. 

  2096.     for (i=0; i<num_pixels; i++)

  2097.         ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];

  2098. }

  2099. 

  2100. /* Palette format: ABCD -> dst format: ABC */

  2101. void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  2102. {

  2103.     long i;

  2104. 

  2105.     for (i=0; i<num_pixels; i++) {

  2106.         //FIXME slow?

  2107.         dst[0]= palette[src[i]*4+0];

  2108.         dst[1]= palette[src[i]*4+1];

  2109.         dst[2]= palette[src[i]*4+2];

  2110.         dst+= 3;

  2111.     }

  2112. }