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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 modify

  7.  * it under the terms of the GNU General Public License as published by

  8.  * the Free Software Foundation; either version 2 of the License, or

  9.  * (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

  14.  * GNU General Public License for more details.

  15.  *

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

  17.  * 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.  * the C code (not assembly, mmx, ...) of this file can be used

  21.  * under the LGPL license too

  22.  */

  23. 

  24. /*

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

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

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

  28. 

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

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

  31.   x -> x

  32.   YUV9 -> YV12

  33.   YUV9/YV12 -> Y800

  34.   Y800 -> YUV9/YV12

  35.   BGR24 -> BGR32 & RGB24 -> RGB32

  36.   BGR32 -> BGR24 & RGB32 -> RGB24

  37.   BGR15 -> BGR16

  38. */

  39. 

  40. /*

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

  42.  YV12 -> BGR16

  43.  YV12 -> YV12

  44.  BGR15 -> BGR16

  45.  BGR16 -> BGR16

  46.  YVU9 -> YV12

  47. 

  48. untested special converters

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

  50.   YV12/I420 -> YV12/I420

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

  52.   BGR24 -> BGR32 & RGB24 -> RGB32

  53.   BGR32 -> BGR24 & RGB32 -> RGB24

  54.   BGR24 -> YV12

  55. */

  56. 

  57. #define _SVID_SOURCE //needed for MAP_ANONYMOUS

  58. #include <inttypes.h>

  59. #include <string.h>

  60. #include <math.h>

  61. #include <stdio.h>

  62. #include "config.h"

  63. #include <assert.h>

  64. #if HAVE_SYS_MMAN_H

  65. #include <sys/mman.h>

  66. #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)

  67. #define MAP_ANONYMOUS MAP_ANON

  68. #endif

  69. #endif

  70. #if HAVE_VIRTUALALLOC

  71. #define WIN32_LEAN_AND_MEAN

  72. #include <windows.h>

  73. #endif

  74. #include "swscale.h"

  75. #include "swscale_internal.h"

  76. #include "rgb2rgb.h"

  77. #include "libavutil/intreadwrite.h"

  78. #include "libavutil/x86_cpu.h"

  79. #include "libavutil/avutil.h"

  80. #include "libavutil/bswap.h"

  81. 

  82. unsigned swscale_version(void)

  83. {

  84.     return LIBSWSCALE_VERSION_INT;

  85. }

  86. 

  87. #undef MOVNTQ

  88. #undef PAVGB

  89. 

  90. //#undef HAVE_MMX2

  91. //#define HAVE_AMD3DNOW

  92. //#undef HAVE_MMX

  93. //#undef ARCH_X86

  94. #define DITHER1XBPP

  95. 

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

  97. 

  98. #define RET 0xC3 //near return opcode for x86

  99. 

  100. #ifdef M_PI

  101. #define PI M_PI

  102. #else

  103. #define PI 3.14159265358979323846

  104. #endif

  105. 

  106. #define isSupportedIn(x)    (       \

  107.            (x)==PIX_FMT_YUV420P     \

  108.         || (x)==PIX_FMT_YUVA420P    \

  109.         || (x)==PIX_FMT_YUYV422     \

  110.         || (x)==PIX_FMT_UYVY422     \

  111.         || (x)==PIX_FMT_RGB48BE     \

  112.         || (x)==PIX_FMT_RGB48LE     \

  113.         || (x)==PIX_FMT_RGB32       \

  114.         || (x)==PIX_FMT_RGB32_1     \

  115.         || (x)==PIX_FMT_BGR24       \

  116.         || (x)==PIX_FMT_BGR565      \

  117.         || (x)==PIX_FMT_BGR555      \

  118.         || (x)==PIX_FMT_BGR32       \

  119.         || (x)==PIX_FMT_BGR32_1     \

  120.         || (x)==PIX_FMT_RGB24       \

  121.         || (x)==PIX_FMT_RGB565      \

  122.         || (x)==PIX_FMT_RGB555      \

  123.         || (x)==PIX_FMT_GRAY8       \

  124.         || (x)==PIX_FMT_YUV410P     \

  125.         || (x)==PIX_FMT_YUV440P     \

  126.         || (x)==PIX_FMT_GRAY16BE    \

  127.         || (x)==PIX_FMT_GRAY16LE    \

  128.         || (x)==PIX_FMT_YUV444P     \

  129.         || (x)==PIX_FMT_YUV422P     \

  130.         || (x)==PIX_FMT_YUV411P     \

  131.         || (x)==PIX_FMT_PAL8        \

  132.         || (x)==PIX_FMT_BGR8        \

  133.         || (x)==PIX_FMT_RGB8        \

  134.         || (x)==PIX_FMT_BGR4_BYTE   \

  135.         || (x)==PIX_FMT_RGB4_BYTE   \

  136.         || (x)==PIX_FMT_YUV440P     \

  137.         || (x)==PIX_FMT_MONOWHITE   \

  138.         || (x)==PIX_FMT_MONOBLACK   \

  139.         || (x)==PIX_FMT_YUV420P16LE   \

  140.         || (x)==PIX_FMT_YUV422P16LE   \

  141.         || (x)==PIX_FMT_YUV444P16LE   \

  142.         || (x)==PIX_FMT_YUV420P16BE   \

  143.         || (x)==PIX_FMT_YUV422P16BE   \

  144.         || (x)==PIX_FMT_YUV444P16BE   \

  145.     )

  146. #define isSupportedOut(x)   (       \

  147.            (x)==PIX_FMT_YUV420P     \

  148.         || (x)==PIX_FMT_YUVA420P    \

  149.         || (x)==PIX_FMT_YUYV422     \

  150.         || (x)==PIX_FMT_UYVY422     \

  151.         || (x)==PIX_FMT_YUV444P     \

  152.         || (x)==PIX_FMT_YUV422P     \

  153.         || (x)==PIX_FMT_YUV411P     \

  154.         || isRGB(x)                 \

  155.         || isBGR(x)                 \

  156.         || (x)==PIX_FMT_NV12        \

  157.         || (x)==PIX_FMT_NV21        \

  158.         || (x)==PIX_FMT_GRAY16BE    \

  159.         || (x)==PIX_FMT_GRAY16LE    \

  160.         || (x)==PIX_FMT_GRAY8       \

  161.         || (x)==PIX_FMT_YUV410P     \

  162.         || (x)==PIX_FMT_YUV440P     \

  163.         || (x)==PIX_FMT_YUV420P16LE   \

  164.         || (x)==PIX_FMT_YUV422P16LE   \

  165.         || (x)==PIX_FMT_YUV444P16LE   \

  166.         || (x)==PIX_FMT_YUV420P16BE   \

  167.         || (x)==PIX_FMT_YUV422P16BE   \

  168.         || (x)==PIX_FMT_YUV444P16BE   \

  169.     )

  170. #define isPacked(x)         (       \

  171.            (x)==PIX_FMT_PAL8        \

  172.         || (x)==PIX_FMT_YUYV422     \

  173.         || (x)==PIX_FMT_UYVY422     \

  174.         || isRGB(x)                 \

  175.         || isBGR(x)                 \

  176.     )

  177. #define usePal(x)           (       \

  178.            (x)==PIX_FMT_PAL8        \

  179.         || (x)==PIX_FMT_BGR4_BYTE   \

  180.         || (x)==PIX_FMT_RGB4_BYTE   \

  181.         || (x)==PIX_FMT_BGR8        \

  182.         || (x)==PIX_FMT_RGB8        \

  183.     )

  184. 

  185. #define RGB2YUV_SHIFT 15

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

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

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

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

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

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

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

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

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

  195. 

  196. extern const int32_t ff_yuv2rgb_coeffs[8][4];

  197. 

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

  199.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  200.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  201.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  202.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  203.     {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC

  204.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  205.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //SMPTE 170M

  206.     {0.701 , 0.087 , 0.212 , -0.384, 0.5  -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M

  207. };

  208. 

  209. /*

  210. NOTES

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

  212. 

  213. TODO

  214. more intelligent misalignment avoidance for the horizontal scaler

  215. write special vertical cubic upscale version

  216. optimize C code (YV12 / minmax)

  217. add support for packed pixel YUV input & output

  218. add support for Y8 output

  219. optimize BGR24 & BGR32

  220. add BGR4 output support

  221. write special BGR->BGR scaler

  222. */

  223. 

  224. #if ARCH_X86 && CONFIG_GPL

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

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

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

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

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

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

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

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

  233. 

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

  235.         0x0103010301030103LL,

  236.         0x0200020002000200LL,};

  237. 

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

  239.         0x0602060206020602LL,

  240.         0x0004000400040004LL,};

  241. 

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

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

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

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

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

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

  248. 

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

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

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

  252. 

  253. #ifdef FAST_BGR2YV12

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

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

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

  257. #else

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

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

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

  261. #endif /* FAST_BGR2YV12 */

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

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

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

  265. 

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

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

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

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

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

  271. 

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

  273.     {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},

  274.     {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},

  275. };

  276. 

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

  278. 

  279. #endif /* ARCH_X86 && CONFIG_GPL */

  280. 

  281. // clipping helper table for C implementations:

  282. static unsigned char clip_table[768];

  283. 

  284. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b);

  285. 

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

  287. {  1,   3,   1,   3,   1,   3,   1,   3, },

  288. {  2,   0,   2,   0,   2,   0,   2,   0, },

  289. };

  290. 

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

  292. {  6,   2,   6,   2,   6,   2,   6,   2, },

  293. {  0,   4,   0,   4,   0,   4,   0,   4, },

  294. };

  295. 

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

  297. { 17,   9,  23,  15,  16,   8,  22,  14, },

  298. {  5,  29,   3,  27,   4,  28,   2,  26, },

  299. { 21,  13,  19,  11,  20,  12,  18,  10, },

  300. {  0,  24,   6,  30,   1,  25,   7,  31, },

  301. { 16,   8,  22,  14,  17,   9,  23,  15, },

  302. {  4,  28,   2,  26,   5,  29,   3,  27, },

  303. { 20,  12,  18,  10,  21,  13,  19,  11, },

  304. {  1,  25,   7,  31,   0,  24,   6,  30, },

  305. };

  306. 

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

  308. {  0,  55,  14,  68,   3,  58,  17,  72, },

  309. { 37,  18,  50,  32,  40,  22,  54,  35, },

  310. {  9,  64,   5,  59,  13,  67,   8,  63, },

  311. { 46,  27,  41,  23,  49,  31,  44,  26, },

  312. {  2,  57,  16,  71,   1,  56,  15,  70, },

  313. { 39,  21,  52,  34,  38,  19,  51,  33, },

  314. { 11,  66,   7,  62,  10,  65,   6,  60, },

  315. { 48,  30,  43,  25,  47,  29,  42,  24, },

  316. };

  317. 

  318. #if 1

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

  320. {117,  62, 158, 103, 113,  58, 155, 100, },

  321. { 34, 199,  21, 186,  31, 196,  17, 182, },

  322. {144,  89, 131,  76, 141,  86, 127,  72, },

  323. {  0, 165,  41, 206,  10, 175,  52, 217, },

  324. {110,  55, 151,  96, 120,  65, 162, 107, },

  325. { 28, 193,  14, 179,  38, 203,  24, 189, },

  326. {138,  83, 124,  69, 148,  93, 134,  79, },

  327. {  7, 172,  48, 213,   3, 168,  45, 210, },

  328. };

  329. #elif 1

  330. // tries to correct a gamma of 1.5

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

  332. {  0, 143,  18, 200,   2, 156,  25, 215, },

  333. { 78,  28, 125,  64,  89,  36, 138,  74, },

  334. { 10, 180,   3, 161,  16, 195,   8, 175, },

  335. {109,  51,  93,  38, 121,  60, 105,  47, },

  336. {  1, 152,  23, 210,   0, 147,  20, 205, },

  337. { 85,  33, 134,  71,  81,  30, 130,  67, },

  338. { 14, 190,   6, 171,  12, 185,   5, 166, },

  339. {117,  57, 101,  44, 113,  54,  97,  41, },

  340. };

  341. #elif 1

  342. // tries to correct a gamma of 2.0

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

  344. {  0, 124,   8, 193,   0, 140,  12, 213, },

  345. { 55,  14, 104,  42,  66,  19, 119,  52, },

  346. {  3, 168,   1, 145,   6, 187,   3, 162, },

  347. { 86,  31,  70,  21,  99,  39,  82,  28, },

  348. {  0, 134,  11, 206,   0, 129,   9, 200, },

  349. { 62,  17, 114,  48,  58,  16, 109,  45, },

  350. {  5, 181,   2, 157,   4, 175,   1, 151, },

  351. { 95,  36,  78,  26,  90,  34,  74,  24, },

  352. };

  353. #else

  354. // tries to correct a gamma of 2.5

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

  356. {  0, 107,   3, 187,   0, 125,   6, 212, },

  357. { 39,   7,  86,  28,  49,  11, 102,  36, },

  358. {  1, 158,   0, 131,   3, 180,   1, 151, },

  359. { 68,  19,  52,  12,  81,  25,  64,  17, },

  360. {  0, 119,   5, 203,   0, 113,   4, 195, },

  361. { 45,   9,  96,  33,  42,   8,  91,  30, },

  362. {  2, 172,   1, 144,   2, 165,   0, 137, },

  363. { 77,  23,  60,  15,  72,  21,  56,  14, },

  364. };

  365. #endif

  366. 

  367. const char *sws_format_name(enum PixelFormat format)

  368. {

  369.     switch (format) {

  370.     case PIX_FMT_YUV420P:

  371.         return "yuv420p";

  372.     case PIX_FMT_YUVA420P:

  373.         return "yuva420p";

  374.     case PIX_FMT_YUYV422:

  375.         return "yuyv422";

  376.     case PIX_FMT_RGB24:

  377.         return "rgb24";

  378.     case PIX_FMT_BGR24:

  379.         return "bgr24";

  380.     case PIX_FMT_YUV422P:

  381.         return "yuv422p";

  382.     case PIX_FMT_YUV444P:

  383.         return "yuv444p";

  384.     case PIX_FMT_RGB32:

  385.         return "rgb32";

  386.     case PIX_FMT_YUV410P:

  387.         return "yuv410p";

  388.     case PIX_FMT_YUV411P:

  389.         return "yuv411p";

  390.     case PIX_FMT_RGB565:

  391.         return "rgb565";

  392.     case PIX_FMT_RGB555:

  393.         return "rgb555";

  394.     case PIX_FMT_GRAY16BE:

  395.         return "gray16be";

  396.     case PIX_FMT_GRAY16LE:

  397.         return "gray16le";

  398.     case PIX_FMT_GRAY8:

  399.         return "gray8";

  400.     case PIX_FMT_MONOWHITE:

  401.         return "mono white";

  402.     case PIX_FMT_MONOBLACK:

  403.         return "mono black";

  404.     case PIX_FMT_PAL8:

  405.         return "Palette";

  406.     case PIX_FMT_YUVJ420P:

  407.         return "yuvj420p";

  408.     case PIX_FMT_YUVJ422P:

  409.         return "yuvj422p";

  410.     case PIX_FMT_YUVJ444P:

  411.         return "yuvj444p";

  412.     case PIX_FMT_XVMC_MPEG2_MC:

  413.         return "xvmc_mpeg2_mc";

  414.     case PIX_FMT_XVMC_MPEG2_IDCT:

  415.         return "xvmc_mpeg2_idct";

  416.     case PIX_FMT_UYVY422:

  417.         return "uyvy422";

  418.     case PIX_FMT_UYYVYY411:

  419.         return "uyyvyy411";

  420.     case PIX_FMT_RGB32_1:

  421.         return "rgb32x";

  422.     case PIX_FMT_BGR32_1:

  423.         return "bgr32x";

  424.     case PIX_FMT_BGR32:

  425.         return "bgr32";

  426.     case PIX_FMT_BGR565:

  427.         return "bgr565";

  428.     case PIX_FMT_BGR555:

  429.         return "bgr555";

  430.     case PIX_FMT_BGR8:

  431.         return "bgr8";

  432.     case PIX_FMT_BGR4:

  433.         return "bgr4";

  434.     case PIX_FMT_BGR4_BYTE:

  435.         return "bgr4 byte";

  436.     case PIX_FMT_RGB8:

  437.         return "rgb8";

  438.     case PIX_FMT_RGB4:

  439.         return "rgb4";

  440.     case PIX_FMT_RGB4_BYTE:

  441.         return "rgb4 byte";

  442.     case PIX_FMT_RGB48BE:

  443.         return "rgb48be";

  444.     case PIX_FMT_RGB48LE:

  445.         return "rgb48le";

  446.     case PIX_FMT_NV12:

  447.         return "nv12";

  448.     case PIX_FMT_NV21:

  449.         return "nv21";

  450.     case PIX_FMT_YUV440P:

  451.         return "yuv440p";

  452.     case PIX_FMT_VDPAU_H264:

  453.         return "vdpau_h264";

  454.     case PIX_FMT_VDPAU_MPEG1:

  455.         return "vdpau_mpeg1";

  456.     case PIX_FMT_VDPAU_MPEG2:

  457.         return "vdpau_mpeg2";

  458.     case PIX_FMT_VDPAU_WMV3:

  459.         return "vdpau_wmv3";

  460.     case PIX_FMT_VDPAU_VC1:

  461.         return "vdpau_vc1";

  462.     case PIX_FMT_YUV420P16LE:

  463.         return "yuv420p16le";

  464.     case PIX_FMT_YUV422P16LE:

  465.         return "yuv422p16le";

  466.     case PIX_FMT_YUV444P16LE:

  467.         return "yuv444p16le";

  468.     case PIX_FMT_YUV420P16BE:

  469.         return "yuv420p16be";

  470.     case PIX_FMT_YUV422P16BE:

  471.         return "yuv422p16be";

  472.     case PIX_FMT_YUV444P16BE:

  473.         return "yuv444p16be";

  474.     default:

  475.         return "Unknown format";

  476.     }

  477. }

  478. 

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

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

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

  482.                                                     int dstW, int chrDstW, int big_endian)

  483. {

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

  485.     int i;

  486. 

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

  488.         int val = 1 << 10;

  489.         int j;

  490. 

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

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

  493. 

  494.         if (big_endian) {

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

  496.         } else {

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

  498.         }

  499.     }

  500. 

  501.     if (uDest) {

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

  503.             int u = 1 << 10;

  504.             int v = 1 << 10;

  505.             int j;

  506. 

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

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

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

  510.             }

  511. 

  512.             if (big_endian) {

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

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

  515.             } else {

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

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

  518.             }

  519.         }

  520.     }

  521. 

  522.     if (CONFIG_SWSCALE_ALPHA && aDest) {

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

  524.             int val = 1 << 10;

  525.             int j;

  526. 

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

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

  529. 

  530.             if (big_endian) {

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

  532.             } else {

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

  534.             }

  535.         }

  536.     }

  537. }

  538. 

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

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

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

  542.                                  enum PixelFormat dstFormat)

  543. {

  544.     if (isBE(dstFormat)) {

  545.         yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,

  546.                                chrFilter, chrSrc, chrFilterSize,

  547.                                alpSrc,

  548.                                dest, uDest, vDest, aDest,

  549.                                dstW, chrDstW, 1);

  550.     } else {

  551.         yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,

  552.                                chrFilter, chrSrc, chrFilterSize,

  553.                                alpSrc,

  554.                                dest, uDest, vDest, aDest,

  555.                                dstW, chrDstW, 0);

  556.     }

  557. }

  558. 

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

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

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

  562. {

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

  564.     int i;

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

  566.         int val=1<<18;

  567.         int j;

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

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

  570. 

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

  572.     }

  573. 

  574.     if (uDest)

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

  576.             int u=1<<18;

  577.             int v=1<<18;

  578.             int j;

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

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

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

  582.             }

  583. 

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

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

  586.         }

  587. 

  588.     if (CONFIG_SWSCALE_ALPHA && aDest)

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

  590.             int val=1<<18;

  591.             int j;

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

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

  594. 

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

  596.         }

  597. 

  598. }

  599. 

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

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

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

  603. {

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

  605.     int i;

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

  607.         int val=1<<18;

  608.         int j;

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

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

  611. 

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

  613.     }

  614. 

  615.     if (!uDest)

  616.         return;

  617. 

  618.     if (dstFormat == PIX_FMT_NV12)

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

  620.             int u=1<<18;

  621.             int v=1<<18;

  622.             int j;

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

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

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

  626.             }

  627. 

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

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

  630.         }

  631.     else

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

  633.             int u=1<<18;

  634.             int v=1<<18;

  635.             int j;

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

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

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

  639.             }

  640. 

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

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

  643.         }

  644. }

  645. 

  646. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \

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

  648.         int j;\

  649.         int Y1 = 1<<18;\

  650.         int Y2 = 1<<18;\

  651.         int U  = 1<<18;\

  652.         int V  = 1<<18;\

  653.         int av_unused A1, A2;\

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

  655.         const int i2= 2*i;\

  656.         \

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

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

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

  660.         }\

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

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

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

  664.         }\

  665.         Y1>>=19;\

  666.         Y2>>=19;\

  667.         U >>=19;\

  668.         V >>=19;\

  669.         if (alpha) {\

  670.             A1 = 1<<18;\

  671.             A2 = 1<<18;\

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

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

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

  675.             }\

  676.             A1>>=19;\

  677.             A2>>=19;\

  678.         }\

  679. 

  680. #define YSCALE_YUV_2_PACKEDX_C(type,alpha) \

  681.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\

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

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

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

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

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

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

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

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

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

  691.         }\

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

  693.             A1=av_clip_uint8(A1);\

  694.             A2=av_clip_uint8(A2);\

  695.         }

  696. 

  697. #define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \

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

  699.         int j;\

  700.         int Y = 0;\

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

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

  703.         int av_unused A;\

  704.         int R,G,B;\

  705.         \

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

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

  708.         }\

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

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

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

  712.         }\

  713.         Y >>=10;\

  714.         U >>=10;\

  715.         V >>=10;\

  716.         if (alpha) {\

  717.             A = rnd;\

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

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

  720.             A >>=19;\

  721.             if (A&256)\

  722.                 A = av_clip_uint8(A);\

  723.         }\

  724. 

  725. #define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \

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

  727.         Y-= c->yuv2rgb_y_offset;\

  728.         Y*= c->yuv2rgb_y_coeff;\

  729.         Y+= rnd;\

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

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

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

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

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

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

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

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

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

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

  740.         }\

  741. 

  742. 

  743. #define YSCALE_YUV_2_GRAY16_C \

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

  745.         int j;\

  746.         int Y1 = 1<<18;\

  747.         int Y2 = 1<<18;\

  748.         int U  = 1<<18;\

  749.         int V  = 1<<18;\

  750.         \

  751.         const int i2= 2*i;\

  752.         \

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

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

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

  756.         }\

  757.         Y1>>=11;\

  758.         Y2>>=11;\

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

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

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

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

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

  764.         }

  765. 

  766. #define YSCALE_YUV_2_RGBX_C(type,alpha) \

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

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

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

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

  771. 

  772. #define YSCALE_YUV_2_PACKED2_C(type,alpha)   \

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

  774.         const int i2= 2*i;       \

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

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

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

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

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

  780.         int av_unused A1, A2;                                         \

  781.         if (alpha) {\

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

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

  784.         }\

  785. 

  786. #define YSCALE_YUV_2_GRAY16_2_C   \

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

  788.         const int i2= 2*i;       \

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

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

  791. 

  792. #define YSCALE_YUV_2_RGB2_C(type,alpha) \

  793.     YSCALE_YUV_2_PACKED2_C(type,alpha)\

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

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

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

  797. 

  798. #define YSCALE_YUV_2_PACKED1_C(type,alpha) \

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

  800.         const int i2= 2*i;\

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

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

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

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

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

  806.         int av_unused A1, A2;\

  807.         if (alpha) {\

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

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

  810.         }\

  811. 

  812. #define YSCALE_YUV_2_GRAY16_1_C \

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

  814.         const int i2= 2*i;\

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

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

  817. 

  818. #define YSCALE_YUV_2_RGB1_C(type,alpha) \

  819.     YSCALE_YUV_2_PACKED1_C(type,alpha)\

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

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

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

  823. 

  824. #define YSCALE_YUV_2_PACKED1B_C(type,alpha) \

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

  826.         const int i2= 2*i;\

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

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

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

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

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

  832.         int av_unused A1, A2;\

  833.         if (alpha) {\

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

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

  836.         }\

  837. 

  838. #define YSCALE_YUV_2_RGB1B_C(type,alpha) \

  839.     YSCALE_YUV_2_PACKED1B_C(type,alpha)\

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

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

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

  843. 

  844. #define YSCALE_YUV_2_MONO2_C \

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

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

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

  848.         int acc;\

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

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

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

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

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

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

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

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

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

  858.         dest++;\

  859.     }\

  860. 

  861. 

  862. #define YSCALE_YUV_2_MONOX_C \

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

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

  865.     int acc=0;\

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

  867.         int j;\

  868.         int Y1=1<<18;\

  869.         int Y2=1<<18;\

  870. \

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

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

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

  874.         }\

  875.         Y1>>=19;\

  876.         Y2>>=19;\

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

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

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

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

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

  882.         }\

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

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

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

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

  887.             dest++;\

  888.         }\

  889.     }

  890. 

  891. 

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

  893.     switch(c->dstFormat) {\

  894.     case PIX_FMT_RGB48BE:\

  895.     case PIX_FMT_RGB48LE:\

  896.         func(uint8_t,0)\

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

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

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

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

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

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

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

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

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

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

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

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

  909.             dest+=12;\

  910.         }\

  911.         break;\

  912.     case PIX_FMT_RGBA:\

  913.     case PIX_FMT_BGRA:\

  914.         if (CONFIG_SMALL) {\

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

  916.             func(uint32_t,needAlpha)\

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

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

  919.             }\

  920.         } else {\

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

  922.                 func(uint32_t,1)\

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

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

  925.                 }\

  926.             } else {\

  927.                 func(uint32_t,0)\

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

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

  930.                 }\

  931.             }\

  932.         }\

  933.         break;\

  934.     case PIX_FMT_ARGB:\

  935.     case PIX_FMT_ABGR:\

  936.         if (CONFIG_SMALL) {\

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

  938.             func(uint32_t,needAlpha)\

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

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

  941.             }\

  942.         } else {\

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

  944.                 func(uint32_t,1)\

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

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

  947.                 }\

  948.             } else {\

  949.                 func(uint32_t,0)\

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

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

  952.                 }\

  953.             }\

  954.         }                \

  955.         break;\

  956.     case PIX_FMT_RGB24:\

  957.         func(uint8_t,0)\

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

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

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

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

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

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

  964.             dest+=6;\

  965.         }\

  966.         break;\

  967.     case PIX_FMT_BGR24:\

  968.         func(uint8_t,0)\

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

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

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

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

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

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

  975.             dest+=6;\

  976.         }\

  977.         break;\

  978.     case PIX_FMT_RGB565:\

  979.     case PIX_FMT_BGR565:\

  980.         {\

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

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

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

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

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

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

  987.             func(uint16_t,0)\

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

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

  990.             }\

  991.         }\

  992.         break;\

  993.     case PIX_FMT_RGB555:\

  994.     case PIX_FMT_BGR555:\

  995.         {\

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

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

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

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

  1000.             const int dg2= dither_2x2_8[y&1    ][0];\

  1001.             const int db2= dither_2x2_8[(y&1)^1][1];\

  1002.             func(uint16_t,0)\

  1003.                 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\

  1004.                 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\

  1005.             }\

  1006.         }\

  1007.         break;\

  1008.     case PIX_FMT_RGB8:\

  1009.     case PIX_FMT_BGR8:\

  1010.         {\

  1011.             const uint8_t * const d64= dither_8x8_73[y&7];\

  1012.             const uint8_t * const d32= dither_8x8_32[y&7];\

  1013.             func(uint8_t,0)\

  1014.                 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\

  1015.                 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\

  1016.             }\

  1017.         }\

  1018.         break;\

  1019.     case PIX_FMT_RGB4:\

  1020.     case PIX_FMT_BGR4:\

  1021.         {\

  1022.             const uint8_t * const d64= dither_8x8_73 [y&7];\

  1023.             const uint8_t * const d128=dither_8x8_220[y&7];\

  1024.             func(uint8_t,0)\

  1025.                 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\

  1026.                                  + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\

  1027.             }\

  1028.         }\

  1029.         break;\

  1030.     case PIX_FMT_RGB4_BYTE:\

  1031.     case PIX_FMT_BGR4_BYTE:\

  1032.         {\

  1033.             const uint8_t * const d64= dither_8x8_73 [y&7];\

  1034.             const uint8_t * const d128=dither_8x8_220[y&7];\

  1035.             func(uint8_t,0)\

  1036.                 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\

  1037.                 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\

  1038.             }\

  1039.         }\

  1040.         break;\

  1041.     case PIX_FMT_MONOBLACK:\

  1042.     case PIX_FMT_MONOWHITE:\

  1043.         {\

  1044.             func_monoblack\

  1045.         }\

  1046.         break;\

  1047.     case PIX_FMT_YUYV422:\

  1048.         func2\

  1049.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  1050.             ((uint8_t*)dest)[2*i2+1]= U;\

  1051.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  1052.             ((uint8_t*)dest)[2*i2+3]= V;\

  1053.         }                \

  1054.         break;\

  1055.     case PIX_FMT_UYVY422:\

  1056.         func2\

  1057.             ((uint8_t*)dest)[2*i2+0]= U;\

  1058.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  1059.             ((uint8_t*)dest)[2*i2+2]= V;\

  1060.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  1061.         }                \

  1062.         break;\

  1063.     case PIX_FMT_GRAY16BE:\

  1064.         func_g16\

  1065.             ((uint8_t*)dest)[2*i2+0]= Y1>>8;\

  1066.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  1067.             ((uint8_t*)dest)[2*i2+2]= Y2>>8;\

  1068.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  1069.         }                \

  1070.         break;\

  1071.     case PIX_FMT_GRAY16LE:\

  1072.         func_g16\

  1073.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  1074.             ((uint8_t*)dest)[2*i2+1]= Y1>>8;\

  1075.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  1076.             ((uint8_t*)dest)[2*i2+3]= Y2>>8;\

  1077.         }                \

  1078.         break;\

  1079.     }\

  1080. 

  1081. 

  1082. static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  1083.                                   const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  1084.                                   const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  1085. {

  1086.     int i;

  1087.     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)

  1088. }

  1089. 

  1090. static inline void yuv2rgbXinC_full(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  1091.                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  1092.                                     const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  1093. {

  1094.     int i;

  1095.     int step= fmt_depth(c->dstFormat)/8;

  1096.     int aidx= 3;

  1097. 

  1098.     switch(c->dstFormat) {

  1099.     case PIX_FMT_ARGB:

  1100.         dest++;

  1101.         aidx= 0;

  1102.     case PIX_FMT_RGB24:

  1103.         aidx--;

  1104.     case PIX_FMT_RGBA:

  1105.         if (CONFIG_SMALL) {

  1106.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1107.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1108.                 dest[aidx]= needAlpha ? A : 255;

  1109.                 dest[0]= R>>22;

  1110.                 dest[1]= G>>22;

  1111.                 dest[2]= B>>22;

  1112.                 dest+= step;

  1113.             }

  1114.         } else {

  1115.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  1116.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1117.                     dest[aidx]= A;

  1118.                     dest[0]= R>>22;

  1119.                     dest[1]= G>>22;

  1120.                     dest[2]= B>>22;

  1121.                     dest+= step;

  1122.                 }

  1123.             } else {

  1124.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1125.                     dest[aidx]= 255;

  1126.                     dest[0]= R>>22;

  1127.                     dest[1]= G>>22;

  1128.                     dest[2]= B>>22;

  1129.                     dest+= step;

  1130.                 }

  1131.             }

  1132.         }

  1133.         break;

  1134.     case PIX_FMT_ABGR:

  1135.         dest++;

  1136.         aidx= 0;

  1137.     case PIX_FMT_BGR24:

  1138.         aidx--;

  1139.     case PIX_FMT_BGRA:

  1140.         if (CONFIG_SMALL) {

  1141.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1142.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1143.                 dest[aidx]= needAlpha ? A : 255;

  1144.                 dest[0]= B>>22;

  1145.                 dest[1]= G>>22;

  1146.                 dest[2]= R>>22;

  1147.                 dest+= step;

  1148.             }

  1149.         } else {

  1150.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  1151.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1152.                     dest[aidx]= A;

  1153.                     dest[0]= B>>22;

  1154.                     dest[1]= G>>22;

  1155.                     dest[2]= R>>22;

  1156.                     dest+= step;

  1157.                 }

  1158.             } else {

  1159.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1160.                     dest[aidx]= 255;

  1161.                     dest[0]= B>>22;

  1162.                     dest[1]= G>>22;

  1163.                     dest[2]= R>>22;

  1164.                     dest+= step;

  1165.                 }

  1166.             }

  1167.         }

  1168.         break;

  1169.     default:

  1170.         assert(0);

  1171.     }

  1172. }

  1173. 

  1174. static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val)

  1175. {

  1176.     int i;

  1177.     uint8_t *ptr = plane + stride*y;

  1178.     for (i=0; i<height; i++) {

  1179.         memset(ptr, val, width);

  1180.         ptr += stride;

  1181.     }

  1182. }

  1183. 

  1184. static inline void rgb48ToY(uint8_t *dst, const uint8_t *src, int width)

  1185. {

  1186.     int i;

  1187.     for (i = 0; i < width; i++) {

  1188.         int r = src[i*6+0];

  1189.         int g = src[i*6+2];

  1190.         int b = src[i*6+4];

  1191. 

  1192.         dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1193.     }

  1194. }

  1195. 

  1196. static inline void rgb48ToUV(uint8_t *dstU, uint8_t *dstV,

  1197.                              uint8_t *src1, uint8_t *src2, int width)

  1198. {

  1199.     int i;

  1200.     assert(src1==src2);

  1201.     for (i = 0; i < width; i++) {

  1202.         int r = src1[6*i + 0];

  1203.         int g = src1[6*i + 2];

  1204.         int b = src1[6*i + 4];

  1205. 

  1206.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1207.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1208.     }

  1209. }

  1210. 

  1211. static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1212.                                   uint8_t *src1, uint8_t *src2, int width)

  1213. {

  1214.     int i;

  1215.     assert(src1==src2);

  1216.     for (i = 0; i < width; i++) {

  1217.         int r= src1[12*i + 0] + src1[12*i + 6];

  1218.         int g= src1[12*i + 2] + src1[12*i + 8];

  1219.         int b= src1[12*i + 4] + src1[12*i + 10];

  1220. 

  1221.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1222.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1223.     }

  1224. }

  1225. 

  1226. #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\

  1227. static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\

  1228. {\

  1229.     int i;\

  1230.     for (i=0; i<width; i++) {\

  1231.         int b= (((const type*)src)[i]>>shb)&maskb;\

  1232.         int g= (((const type*)src)[i]>>shg)&maskg;\

  1233.         int r= (((const type*)src)[i]>>shr)&maskr;\

  1234. \

  1235.         dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\

  1236.     }\

  1237. }

  1238. 

  1239. BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1240. BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1241. BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)

  1242. BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)

  1243. BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)

  1244. BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)

  1245. 

  1246. static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1247. {

  1248.     int i;

  1249.     for (i=0; i<width; i++) {

  1250.         dst[i]= src[4*i];

  1251.     }

  1252. }

  1253. 

  1254. #define BGR2UV(type, name, shr, shg, shb, maska, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S)\

  1255. static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1256. {\

  1257.     int i;\

  1258.     for (i=0; i<width; i++) {\

  1259.         int b= (((const type*)src)[i]&maskb)>>shb;\

  1260.         int g= (((const type*)src)[i]&maskg)>>shg;\

  1261.         int r= (((const type*)src)[i]&maskr)>>shr;\

  1262. \

  1263.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\

  1264.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\

  1265.     }\

  1266. }\

  1267. static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1268. {\

  1269.     int i;\

  1270.     for (i=0; i<width; i++) {\

  1271.         int pix0= ((const type*)src)[2*i+0];\

  1272.         int pix1= ((const type*)src)[2*i+1];\

  1273.         int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\

  1274.         int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\

  1275.         int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\

  1276.         g&= maskg|(2*maskg);\

  1277. \

  1278.         g>>=shg;\

  1279. \

  1280.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\

  1281.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\

  1282.     }\

  1283. }

  1284. 

  1285. BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0xFF000000, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1286. BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0xFF000000,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1287. BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0,          0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)

  1288. BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0,          0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)

  1289. BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0,          0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)

  1290. BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0,          0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)

  1291. 

  1292. static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)

  1293. {

  1294.     int i;

  1295.     for (i=0; i<width; i++) {

  1296.         int d= src[i];

  1297. 

  1298.         dst[i]= pal[d] & 0xFF;

  1299.     }

  1300. }

  1301. 

  1302. static inline void palToUV(uint8_t *dstU, uint8_t *dstV,

  1303.                            const uint8_t *src1, const uint8_t *src2,

  1304.                            long width, uint32_t *pal)

  1305. {

  1306.     int i;

  1307.     assert(src1 == src2);

  1308.     for (i=0; i<width; i++) {

  1309.         int p= pal[src1[i]];

  1310. 

  1311.         dstU[i]= p>>8;

  1312.         dstV[i]= p>>16;

  1313.     }

  1314. }

  1315. 

  1316. static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1317. {

  1318.     int i, j;

  1319.     for (i=0; i<width/8; i++) {

  1320.         int d= ~src[i];

  1321.         for(j=0; j<8; j++)

  1322.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1323.     }

  1324. }

  1325. 

  1326. static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1327. {

  1328.     int i, j;

  1329.     for (i=0; i<width/8; i++) {

  1330.         int d= src[i];

  1331.         for(j=0; j<8; j++)

  1332.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1333.     }

  1334. }

  1335. 

  1336. 

  1337. //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one

  1338. //Plain C versions

  1339. #if ((!HAVE_MMX || !CONFIG_GPL) && !HAVE_ALTIVEC) || CONFIG_RUNTIME_CPUDETECT

  1340. #define COMPILE_C

  1341. #endif

  1342. 

  1343. #if ARCH_PPC

  1344. #if HAVE_ALTIVEC || CONFIG_RUNTIME_CPUDETECT

  1345. #define COMPILE_ALTIVEC

  1346. #endif

  1347. #endif //ARCH_PPC

  1348. 

  1349. #if ARCH_X86

  1350. 

  1351. #if ((HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1352. #define COMPILE_MMX

  1353. #endif

  1354. 

  1355. #if (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1356. #define COMPILE_MMX2

  1357. #endif

  1358. 

  1359. #if ((HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1360. #define COMPILE_3DNOW

  1361. #endif

  1362. #endif //ARCH_X86

  1363. 

  1364. #define COMPILE_TEMPLATE_MMX 0

  1365. #define COMPILE_TEMPLATE_MMX2 0

  1366. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1367. #define COMPILE_TEMPLATE_ALTIVEC 0

  1368. 

  1369. #ifdef COMPILE_C

  1370. #define RENAME(a) a ## _C

  1371. #include "swscale_template.c"

  1372. #endif

  1373. 

  1374. #ifdef COMPILE_ALTIVEC

  1375. #undef RENAME

  1376. #undef COMPILE_TEMPLATE_ALTIVEC

  1377. #define COMPILE_TEMPLATE_ALTIVEC 1

  1378. #define RENAME(a) a ## _altivec

  1379. #include "swscale_template.c"

  1380. #endif

  1381. 

  1382. #if ARCH_X86

  1383. 

  1384. //MMX versions

  1385. #ifdef COMPILE_MMX

  1386. #undef RENAME

  1387. #undef COMPILE_TEMPLATE_MMX

  1388. #undef COMPILE_TEMPLATE_MMX2

  1389. #undef COMPILE_TEMPLATE_AMD3DNOW

  1390. #define COMPILE_TEMPLATE_MMX 1

  1391. #define COMPILE_TEMPLATE_MMX2 0

  1392. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1393. #define RENAME(a) a ## _MMX

  1394. #include "swscale_template.c"

  1395. #endif

  1396. 

  1397. //MMX2 versions

  1398. #ifdef COMPILE_MMX2

  1399. #undef RENAME

  1400. #undef COMPILE_TEMPLATE_MMX

  1401. #undef COMPILE_TEMPLATE_MMX2

  1402. #undef COMPILE_TEMPLATE_AMD3DNOW

  1403. #define COMPILE_TEMPLATE_MMX 1

  1404. #define COMPILE_TEMPLATE_MMX2 1

  1405. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1406. #define RENAME(a) a ## _MMX2

  1407. #include "swscale_template.c"

  1408. #endif

  1409. 

  1410. //3DNOW versions

  1411. #ifdef COMPILE_3DNOW

  1412. #undef RENAME

  1413. #undef COMPILE_TEMPLATE_MMX

  1414. #undef COMPILE_TEMPLATE_MMX2

  1415. #undef COMPILE_TEMPLATE_AMD3DNOW

  1416. #define COMPILE_TEMPLATE_MMX 1

  1417. #define COMPILE_TEMPLATE_MMX2 0

  1418. #define COMPILE_TEMPLATE_AMD3DNOW 1

  1419. #define RENAME(a) a ## _3DNow

  1420. #include "swscale_template.c"

  1421. #endif

  1422. 

  1423. #endif //ARCH_X86

  1424. 

  1425. static double getSplineCoeff(double a, double b, double c, double d, double dist)

  1426. {

  1427. //    printf("%f %f %f %f %f\n", a,b,c,d,dist);

  1428.     if (dist<=1.0) return ((d*dist + c)*dist + b)*dist +a;

  1429.     else           return getSplineCoeff(        0.0,

  1430.                                           b+ 2.0*c + 3.0*d,

  1431.                                                  c + 3.0*d,

  1432.                                          -b- 3.0*c - 6.0*d,

  1433.                                          dist-1.0);

  1434. }

  1435. 

  1436. static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,

  1437.                              int srcW, int dstW, int filterAlign, int one, int flags,

  1438.                              SwsVector *srcFilter, SwsVector *dstFilter, double param[2])

  1439. {

  1440.     int i;

  1441.     int filterSize;

  1442.     int filter2Size;

  1443.     int minFilterSize;

  1444.     int64_t *filter=NULL;

  1445.     int64_t *filter2=NULL;

  1446.     const int64_t fone= 1LL<<54;

  1447.     int ret= -1;

  1448. #if ARCH_X86

  1449.     if (flags & SWS_CPU_CAPS_MMX)

  1450.         __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)

  1451. #endif

  1452. 

  1453.     // NOTE: the +1 is for the MMX scaler which reads over the end

  1454.     FF_ALLOC_OR_GOTO(NULL, *filterPos, (dstW+1)*sizeof(int16_t), fail);

  1455. 

  1456.     if (FFABS(xInc - 0x10000) <10) { // unscaled

  1457.         int i;

  1458.         filterSize= 1;

  1459.         FF_ALLOCZ_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail);

  1460. 

  1461.         for (i=0; i<dstW; i++) {

  1462.             filter[i*filterSize]= fone;

  1463.             (*filterPos)[i]=i;

  1464.         }

  1465. 

  1466.     } else if (flags&SWS_POINT) { // lame looking point sampling mode

  1467.         int i;

  1468.         int xDstInSrc;

  1469.         filterSize= 1;

  1470.         FF_ALLOC_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail);

  1471. 

  1472.         xDstInSrc= xInc/2 - 0x8000;

  1473.         for (i=0; i<dstW; i++) {

  1474.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1475. 

  1476.             (*filterPos)[i]= xx;

  1477.             filter[i]= fone;

  1478.             xDstInSrc+= xInc;

  1479.         }

  1480.     } else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) { // bilinear upscale

  1481.         int i;

  1482.         int xDstInSrc;

  1483.         filterSize= 2;

  1484.         FF_ALLOC_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail);

  1485. 

  1486.         xDstInSrc= xInc/2 - 0x8000;

  1487.         for (i=0; i<dstW; i++) {

  1488.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1489.             int j;

  1490. 

  1491.             (*filterPos)[i]= xx;

  1492.             //bilinear upscale / linear interpolate / area averaging

  1493.             for (j=0; j<filterSize; j++) {

  1494.                 int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);

  1495.                 if (coeff<0) coeff=0;

  1496.                 filter[i*filterSize + j]= coeff;

  1497.                 xx++;

  1498.             }

  1499.             xDstInSrc+= xInc;

  1500.         }

  1501.     } else {

  1502.         int xDstInSrc;

  1503.         int sizeFactor;

  1504. 

  1505.         if      (flags&SWS_BICUBIC)      sizeFactor=  4;

  1506.         else if (flags&SWS_X)            sizeFactor=  8;

  1507.         else if (flags&SWS_AREA)         sizeFactor=  1; //downscale only, for upscale it is bilinear

  1508.         else if (flags&SWS_GAUSS)        sizeFactor=  8;   // infinite ;)

  1509.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;

  1510.         else if (flags&SWS_SINC)         sizeFactor= 20; // infinite ;)

  1511.         else if (flags&SWS_SPLINE)       sizeFactor= 20;  // infinite ;)

  1512.         else if (flags&SWS_BILINEAR)     sizeFactor=  2;

  1513.         else {

  1514.             sizeFactor= 0; //GCC warning killer

  1515.             assert(0);

  1516.         }

  1517. 

  1518.         if (xInc <= 1<<16)      filterSize= 1 + sizeFactor; // upscale

  1519.         else                    filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;

  1520. 

  1521.         if (filterSize > srcW-2) filterSize=srcW-2;

  1522. 

  1523.         FF_ALLOC_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail);

  1524. 

  1525.         xDstInSrc= xInc - 0x10000;

  1526.         for (i=0; i<dstW; i++) {

  1527.             int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);

  1528.             int j;

  1529.             (*filterPos)[i]= xx;

  1530.             for (j=0; j<filterSize; j++) {

  1531.                 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;

  1532.                 double floatd;

  1533.                 int64_t coeff;

  1534. 

  1535.                 if (xInc > 1<<16)

  1536.                     d= d*dstW/srcW;

  1537.                 floatd= d * (1.0/(1<<30));

  1538. 

  1539.                 if (flags & SWS_BICUBIC) {

  1540.                     int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] :   0) * (1<<24);

  1541.                     int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);

  1542.                     int64_t dd = ( d*d)>>30;

  1543.                     int64_t ddd= (dd*d)>>30;

  1544. 

  1545.                     if      (d < 1LL<<30)

  1546.                         coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);

  1547.                     else if (d < 1LL<<31)

  1548.                         coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);

  1549.                     else

  1550.                         coeff=0.0;

  1551.                     coeff *= fone>>(30+24);

  1552.                 }

  1553. /*                else if (flags & SWS_X) {

  1554.                     double p= param ? param*0.01 : 0.3;

  1555.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1556.                     coeff*= pow(2.0, - p*d*d);

  1557.                 }*/

  1558.                 else if (flags & SWS_X) {

  1559.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1560.                     double c;

  1561. 

  1562.                     if (floatd<1.0)

  1563.                         c = cos(floatd*PI);

  1564.                     else

  1565.                         c=-1.0;

  1566.                     if (c<0.0)      c= -pow(-c, A);

  1567.                     else            c=  pow( c, A);

  1568.                     coeff= (c*0.5 + 0.5)*fone;

  1569.                 } else if (flags & SWS_AREA) {

  1570.                     int64_t d2= d - (1<<29);

  1571.                     if      (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));

  1572.                     else if (d2*xInc <  (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));

  1573.                     else coeff=0.0;

  1574.                     coeff *= fone>>(30+16);

  1575.                 } else if (flags & SWS_GAUSS) {

  1576.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1577.                     coeff = (pow(2.0, - p*floatd*floatd))*fone;

  1578.                 } else if (flags & SWS_SINC) {

  1579.                     coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;

  1580.                 } else if (flags & SWS_LANCZOS) {

  1581.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1582.                     coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;

  1583.                     if (floatd>p) coeff=0;

  1584.                 } else if (flags & SWS_BILINEAR) {

  1585.                     coeff= (1<<30) - d;

  1586.                     if (coeff<0) coeff=0;

  1587.                     coeff *= fone >> 30;

  1588.                 } else if (flags & SWS_SPLINE) {

  1589.                     double p=-2.196152422706632;

  1590.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;

  1591.                 } else {

  1592.                     coeff= 0.0; //GCC warning killer

  1593.                     assert(0);

  1594.                 }

  1595. 

  1596.                 filter[i*filterSize + j]= coeff;

  1597.                 xx++;

  1598.             }

  1599.             xDstInSrc+= 2*xInc;

  1600.         }

  1601.     }

  1602. 

  1603.     /* apply src & dst Filter to filter -> filter2

  1604.        av_free(filter);

  1605.     */

  1606.     assert(filterSize>0);

  1607.     filter2Size= filterSize;

  1608.     if (srcFilter) filter2Size+= srcFilter->length - 1;

  1609.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1610.     assert(filter2Size>0);

  1611.     FF_ALLOCZ_OR_GOTO(NULL, filter2, filter2Size*dstW*sizeof(*filter2), fail);

  1612. 

  1613.     for (i=0; i<dstW; i++) {

  1614.         int j, k;

  1615. 

  1616.         if(srcFilter) {

  1617.             for (k=0; k<srcFilter->length; k++) {

  1618.                 for (j=0; j<filterSize; j++)

  1619.                     filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];

  1620.             }

  1621.         } else {

  1622.             for (j=0; j<filterSize; j++)

  1623.                 filter2[i*filter2Size + j]= filter[i*filterSize + j];

  1624.         }

  1625.         //FIXME dstFilter

  1626. 

  1627.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1628.     }

  1629.     av_freep(&filter);

  1630. 

  1631.     /* try to reduce the filter-size (step1 find size and shift left) */

  1632.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1633.     minFilterSize= 0;

  1634.     for (i=dstW-1; i>=0; i--) {

  1635.         int min= filter2Size;

  1636.         int j;

  1637.         int64_t cutOff=0.0;

  1638. 

  1639.         /* get rid off near zero elements on the left by shifting left */

  1640.         for (j=0; j<filter2Size; j++) {

  1641.             int k;

  1642.             cutOff += FFABS(filter2[i*filter2Size]);

  1643. 

  1644.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1645. 

  1646.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1647.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1648. 

  1649.             // move filter coefficients left

  1650.             for (k=1; k<filter2Size; k++)

  1651.                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1652.             filter2[i*filter2Size + k - 1]= 0;

  1653.             (*filterPos)[i]++;

  1654.         }

  1655. 

  1656.         cutOff=0;

  1657.         /* count near zeros on the right */

  1658.         for (j=filter2Size-1; j>0; j--) {

  1659.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1660. 

  1661.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1662.             min--;

  1663.         }

  1664. 

  1665.         if (min>minFilterSize) minFilterSize= min;

  1666.     }

  1667. 

  1668.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1669.         // we can handle the special case 4,

  1670.         // so we don't want to go to the full 8

  1671.         if (minFilterSize < 5)

  1672.             filterAlign = 4;

  1673. 

  1674.         // We really don't want to waste our time

  1675.         // doing useless computation, so fall back on

  1676.         // the scalar C code for very small filters.

  1677.         // Vectorizing is worth it only if you have a

  1678.         // decent-sized vector.

  1679.         if (minFilterSize < 3)

  1680.             filterAlign = 1;

  1681.     }

  1682. 

  1683.     if (flags & SWS_CPU_CAPS_MMX) {

  1684.         // special case for unscaled vertical filtering

  1685.         if (minFilterSize == 1 && filterAlign == 2)

  1686.             filterAlign= 1;

  1687.     }

  1688. 

  1689.     assert(minFilterSize > 0);

  1690.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1691.     assert(filterSize > 0);

  1692.     filter= av_malloc(filterSize*dstW*sizeof(*filter));

  1693.     if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)

  1694.         goto fail;

  1695.     *outFilterSize= filterSize;

  1696. 

  1697.     if (flags&SWS_PRINT_INFO)

  1698.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1699.     /* try to reduce the filter-size (step2 reduce it) */

  1700.     for (i=0; i<dstW; i++) {

  1701.         int j;

  1702. 

  1703.         for (j=0; j<filterSize; j++) {

  1704.             if (j>=filter2Size) filter[i*filterSize + j]= 0;

  1705.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1706.             if((flags & SWS_BITEXACT) && j>=minFilterSize)

  1707.                 filter[i*filterSize + j]= 0;

  1708.         }

  1709.     }

  1710. 

  1711. 

  1712.     //FIXME try to align filterPos if possible

  1713. 

  1714.     //fix borders

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

  1716.         int j;

  1717.         if ((*filterPos)[i] < 0) {

  1718.             // move filter coefficients left to compensate for filterPos

  1719.             for (j=1; j<filterSize; j++) {

  1720.                 int left= FFMAX(j + (*filterPos)[i], 0);

  1721.                 filter[i*filterSize + left] += filter[i*filterSize + j];

  1722.                 filter[i*filterSize + j]=0;

  1723.             }

  1724.             (*filterPos)[i]= 0;

  1725.         }

  1726. 

  1727.         if ((*filterPos)[i] + filterSize > srcW) {

  1728.             int shift= (*filterPos)[i] + filterSize - srcW;

  1729.             // move filter coefficients right to compensate for filterPos

  1730.             for (j=filterSize-2; j>=0; j--) {

  1731.                 int right= FFMIN(j + shift, filterSize-1);

  1732.                 filter[i*filterSize +right] += filter[i*filterSize +j];

  1733.                 filter[i*filterSize +j]=0;

  1734.             }

  1735.             (*filterPos)[i]= srcW - filterSize;

  1736.         }

  1737.     }

  1738. 

  1739.     // Note the +1 is for the MMX scaler which reads over the end

  1740.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1741.     FF_ALLOCZ_OR_GOTO(NULL, *outFilter, *outFilterSize*(dstW+1)*sizeof(int16_t), fail);

  1742. 

  1743.     /* normalize & store in outFilter */

  1744.     for (i=0; i<dstW; i++) {

  1745.         int j;

  1746.         int64_t error=0;

  1747.         int64_t sum=0;

  1748. 

  1749.         for (j=0; j<filterSize; j++) {

  1750.             sum+= filter[i*filterSize + j];

  1751.         }

  1752.         sum= (sum + one/2)/ one;

  1753.         for (j=0; j<*outFilterSize; j++) {

  1754.             int64_t v= filter[i*filterSize + j] + error;

  1755.             int intV= ROUNDED_DIV(v, sum);

  1756.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1757.             error= v - intV*sum;

  1758.         }

  1759.     }

  1760. 

  1761.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

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

  1763.         int j= dstW*(*outFilterSize);

  1764.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1765.     }

  1766. 

  1767.     ret=0;

  1768. fail:

  1769.     av_free(filter);

  1770.     av_free(filter2);

  1771.     return ret;

  1772. }

  1773. 

  1774. #ifdef COMPILE_MMX2

  1775. static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1776. {

  1777.     uint8_t *fragmentA;

  1778.     x86_reg imm8OfPShufW1A;

  1779.     x86_reg imm8OfPShufW2A;

  1780.     x86_reg fragmentLengthA;

  1781.     uint8_t *fragmentB;

  1782.     x86_reg imm8OfPShufW1B;

  1783.     x86_reg imm8OfPShufW2B;

  1784.     x86_reg fragmentLengthB;

  1785.     int fragmentPos;

  1786. 

  1787.     int xpos, i;

  1788. 

  1789.     // create an optimized horizontal scaling routine

  1790. 

  1791.     //code fragment

  1792. 

  1793.     __asm__ volatile(

  1794.         "jmp                         9f                 \n\t"

  1795.     // Begin

  1796.         "0:                                             \n\t"

  1797.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1798.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1799.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1800.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1801.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1802.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1803.         "1:                                             \n\t"

  1804.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1805.         "2:                                             \n\t"

  1806.         "psubw                    %%mm1, %%mm0          \n\t"

  1807.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1808.         "pmullw                   %%mm3, %%mm0          \n\t"

  1809.         "psllw                       $7, %%mm1          \n\t"

  1810.         "paddw                    %%mm1, %%mm0          \n\t"

  1811. 

  1812.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1813. 

  1814.         "add                         $8, %%"REG_a"      \n\t"

  1815.     // End

  1816.         "9:                                             \n\t"

  1817. //        "int $3                                         \n\t"

  1818.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1819.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1820.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1821.         "dec                         %1                 \n\t"

  1822.         "dec                         %2                 \n\t"

  1823.         "sub                         %0, %1             \n\t"

  1824.         "sub                         %0, %2             \n\t"

  1825.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1826.         "sub                         %0, %3             \n\t"

  1827. 

  1828. 

  1829.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1830.         "=r" (fragmentLengthA)

  1831.     );

  1832. 

  1833.     __asm__ volatile(

  1834.         "jmp                         9f                 \n\t"

  1835.     // Begin

  1836.         "0:                                             \n\t"

  1837.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1838.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1839.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1840.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1841.         "1:                                             \n\t"

  1842.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1843.         "2:                                             \n\t"

  1844.         "psubw                    %%mm1, %%mm0          \n\t"

  1845.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1846.         "pmullw                   %%mm3, %%mm0          \n\t"

  1847.         "psllw                       $7, %%mm1          \n\t"

  1848.         "paddw                    %%mm1, %%mm0          \n\t"

  1849. 

  1850.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1851. 

  1852.         "add                         $8, %%"REG_a"      \n\t"

  1853.     // End

  1854.         "9:                                             \n\t"

  1855. //        "int                       $3                   \n\t"

  1856.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1857.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1858.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1859.         "dec                         %1                 \n\t"

  1860.         "dec                         %2                 \n\t"

  1861.         "sub                         %0, %1             \n\t"

  1862.         "sub                         %0, %2             \n\t"

  1863.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1864.         "sub                         %0, %3             \n\t"

  1865. 

  1866. 

  1867.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1868.         "=r" (fragmentLengthB)

  1869.     );

  1870. 

  1871.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1872.     fragmentPos=0;

  1873. 

  1874.     for (i=0; i<dstW/numSplits; i++) {

  1875.         int xx=xpos>>16;

  1876. 

  1877.         if ((i&3) == 0) {

  1878.             int a=0;

  1879.             int b=((xpos+xInc)>>16) - xx;

  1880.             int c=((xpos+xInc*2)>>16) - xx;

  1881.             int d=((xpos+xInc*3)>>16) - xx;

  1882.             int inc                = (d+1<4);

  1883.             uint8_t *fragment      = (d+1<4) ? fragmentB       : fragmentA;

  1884.             x86_reg imm8OfPShufW1  = (d+1<4) ? imm8OfPShufW1B  : imm8OfPShufW1A;

  1885.             x86_reg imm8OfPShufW2  = (d+1<4) ? imm8OfPShufW2B  : imm8OfPShufW2A;

  1886.             x86_reg fragmentLength = (d+1<4) ? fragmentLengthB : fragmentLengthA;

  1887.             int maxShift= 3-(d+inc);

  1888.             int shift=0;

  1889. 

  1890.             if (filterCode) {

  1891.                 filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;

  1892.                 filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1893.                 filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1894.                 filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1895.                 filterPos[i/2]= xx;

  1896. 

  1897.                 memcpy(filterCode + fragmentPos, fragment, fragmentLength);

  1898. 

  1899.                 filterCode[fragmentPos + imm8OfPShufW1]=

  1900.                     (a+inc) | ((b+inc)<<2) | ((c+inc)<<4) | ((d+inc)<<6);

  1901.                 filterCode[fragmentPos + imm8OfPShufW2]=

  1902.                     a | (b<<2) | (c<<4) | (d<<6);

  1903. 

  1904.                 if (i+4-inc>=dstW) shift=maxShift; //avoid overread

  1905.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1906. 

  1907.                 if (shift && i>=shift) {

  1908.                     filterCode[fragmentPos + imm8OfPShufW1]+= 0x55*shift;

  1909.                     filterCode[fragmentPos + imm8OfPShufW2]+= 0x55*shift;

  1910.                     filterPos[i/2]-=shift;

  1911.                 }

  1912.             }

  1913. 

  1914.             fragmentPos+= fragmentLength;

  1915. 

  1916.             if (filterCode)

  1917.                 filterCode[fragmentPos]= RET;

  1918.         }

  1919.         xpos+=xInc;

  1920.     }

  1921.     if (filterCode)

  1922.         filterPos[((i/2)+1)&(~1)]= xpos>>16; // needed to jump to the next part

  1923. 

  1924.     return fragmentPos + 1;

  1925. }

  1926. #endif /* COMPILE_MMX2 */

  1927. 

  1928. static void globalInit(void)

  1929. {

  1930.     // generating tables:

  1931.     int i;

  1932.     for (i=0; i<768; i++) {

  1933.         int c= av_clip_uint8(i-256);

  1934.         clip_table[i]=c;

  1935.     }

  1936. }

  1937. 

  1938. static SwsFunc getSwsFunc(SwsContext *c)

  1939. {

  1940. #if CONFIG_RUNTIME_CPUDETECT

  1941.     int flags = c->flags;

  1942. 

  1943. #if ARCH_X86 && CONFIG_GPL

  1944.     // ordered per speed fastest first

  1945.     if (flags & SWS_CPU_CAPS_MMX2) {

  1946.         sws_init_swScale_MMX2(c);

  1947.         return swScale_MMX2;

  1948.     } else if (flags & SWS_CPU_CAPS_3DNOW) {

  1949.         sws_init_swScale_3DNow(c);

  1950.         return swScale_3DNow;

  1951.     } else if (flags & SWS_CPU_CAPS_MMX) {

  1952.         sws_init_swScale_MMX(c);

  1953.         return swScale_MMX;

  1954.     } else {

  1955.         sws_init_swScale_C(c);

  1956.         return swScale_C;

  1957.     }

  1958. 

  1959. #else

  1960. #if ARCH_PPC

  1961.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1962.         sws_init_swScale_altivec(c);

  1963.         return swScale_altivec;

  1964.     } else {

  1965.         sws_init_swScale_C(c);

  1966.         return swScale_C;

  1967.     }

  1968. #endif

  1969.     sws_init_swScale_C(c);

  1970.     return swScale_C;

  1971. #endif /* ARCH_X86 && CONFIG_GPL */

  1972. #else //CONFIG_RUNTIME_CPUDETECT

  1973. #if   COMPILE_TEMPLATE_MMX2

  1974.     sws_init_swScale_MMX2(c);

  1975.     return swScale_MMX2;

  1976. #elif COMPILE_TEMPLATE_AMD3DNOW

  1977.     sws_init_swScale_3DNow(c);

  1978.     return swScale_3DNow;

  1979. #elif COMPILE_TEMPLATE_MMX

  1980.     sws_init_swScale_MMX(c);

  1981.     return swScale_MMX;

  1982. #elif COMPILE_TEMPLATE_ALTIVEC

  1983.     sws_init_swScale_altivec(c);

  1984.     return swScale_altivec;

  1985. #else

  1986.     sws_init_swScale_C(c);

  1987.     return swScale_C;

  1988. #endif

  1989. #endif //!CONFIG_RUNTIME_CPUDETECT

  1990. }

  1991. 

  1992. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1993.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1994. {

  1995.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1996.     /* Copy Y plane */

  1997.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1998.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1999.     else {

  2000.         int i;

  2001.         const uint8_t *srcPtr= src[0];

  2002.         uint8_t *dstPtr= dst;

  2003.         for (i=0; i<srcSliceH; i++) {

  2004.             memcpy(dstPtr, srcPtr, c->srcW);

  2005.             srcPtr+= srcStride[0];

  2006.             dstPtr+= dstStride[0];

  2007.         }

  2008.     }

  2009.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  2010.     if (c->dstFormat == PIX_FMT_NV12)

  2011.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  2012.     else

  2013.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  2014. 

  2015.     return srcSliceH;

  2016. }

  2017. 

  2018. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2019.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2020. {

  2021.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2022. 

  2023.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  2024. 

  2025.     return srcSliceH;

  2026. }

  2027. 

  2028. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2029.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2030. {

  2031.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2032. 

  2033.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  2034. 

  2035.     return srcSliceH;

  2036. }

  2037. 

  2038. static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2039.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2040. {

  2041.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2042. 

  2043.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  2044. 

  2045.     return srcSliceH;

  2046. }

  2047. 

  2048. static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2049.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2050. {

  2051.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2052. 

  2053.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  2054. 

  2055.     return srcSliceH;

  2056. }

  2057. 

  2058. static int YUYV2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2059.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2060. {

  2061.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2062.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  2063.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  2064. 

  2065.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2066. 

  2067.     if (dstParam[3])

  2068.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2069. 

  2070.     return srcSliceH;

  2071. }

  2072. 

  2073. static int YUYV2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2074.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2075. {

  2076.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2077.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  2078.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  2079. 

  2080.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2081. 

  2082.     return srcSliceH;

  2083. }

  2084. 

  2085. static int UYVY2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2086.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2087. {

  2088.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2089.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  2090.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  2091. 

  2092.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2093. 

  2094.     if (dstParam[3])

  2095.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2096. 

  2097.     return srcSliceH;

  2098. }

  2099. 

  2100. static int UYVY2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2101.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2102. {

  2103.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2104.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  2105.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  2106. 

  2107.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2108. 

  2109.     return srcSliceH;

  2110. }

  2111. 

  2112. static int pal2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2113.                           int srcSliceH, uint8_t* dst[], int dstStride[])

  2114. {

  2115.     const enum PixelFormat srcFormat= c->srcFormat;

  2116.     const enum PixelFormat dstFormat= c->dstFormat;

  2117.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  2118.                  const uint8_t *palette)=NULL;

  2119.     int i;

  2120.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2121.     uint8_t *srcPtr= src[0];

  2122. 

  2123.     if (!usePal(srcFormat))

  2124.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2125.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  2126. 

  2127.     switch(dstFormat) {

  2128.     case PIX_FMT_RGB32  : conv = palette8topacked32; break;

  2129.     case PIX_FMT_BGR32  : conv = palette8topacked32; break;

  2130.     case PIX_FMT_BGR32_1: conv = palette8topacked32; break;

  2131.     case PIX_FMT_RGB32_1: conv = palette8topacked32; break;

  2132.     case PIX_FMT_RGB24  : conv = palette8topacked24; break;

  2133.     case PIX_FMT_BGR24  : conv = palette8topacked24; break;

  2134.     default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2135.                     sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2136.     }

  2137. 

  2138. 

  2139.     for (i=0; i<srcSliceH; i++) {

  2140.         conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  2141.         srcPtr+= srcStride[0];

  2142.         dstPtr+= dstStride[0];

  2143.     }

  2144. 

  2145.     return srcSliceH;

  2146. }

  2147. 

  2148. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  2149. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2150.                           int srcSliceH, uint8_t* dst[], int dstStride[])

  2151. {

  2152.     const enum PixelFormat srcFormat= c->srcFormat;

  2153.     const enum PixelFormat dstFormat= c->dstFormat;

  2154.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  2155.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  2156.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  2157.     const int dstId= fmt_depth(dstFormat) >> 2;

  2158.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  2159. 

  2160.     /* BGR -> BGR */

  2161.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  2162.        || (isRGB(srcFormat) && isRGB(dstFormat))) {

  2163.         switch(srcId | (dstId<<4)) {

  2164.         case 0x34: conv= rgb16to15; break;

  2165.         case 0x36: conv= rgb24to15; break;

  2166.         case 0x38: conv= rgb32to15; break;

  2167.         case 0x43: conv= rgb15to16; break;

  2168.         case 0x46: conv= rgb24to16; break;

  2169.         case 0x48: conv= rgb32to16; break;

  2170.         case 0x63: conv= rgb15to24; break;

  2171.         case 0x64: conv= rgb16to24; break;

  2172.         case 0x68: conv= rgb32to24; break;

  2173.         case 0x83: conv= rgb15to32; break;

  2174.         case 0x84: conv= rgb16to32; break;

  2175.         case 0x86: conv= rgb24to32; break;

  2176.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2177.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2178.         }

  2179.     } else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  2180.              || (isRGB(srcFormat) && isBGR(dstFormat))) {

  2181.         switch(srcId | (dstId<<4)) {

  2182.         case 0x33: conv= rgb15tobgr15; break;

  2183.         case 0x34: conv= rgb16tobgr15; break;

  2184.         case 0x36: conv= rgb24tobgr15; break;

  2185.         case 0x38: conv= rgb32tobgr15; break;

  2186.         case 0x43: conv= rgb15tobgr16; break;

  2187.         case 0x44: conv= rgb16tobgr16; break;

  2188.         case 0x46: conv= rgb24tobgr16; break;

  2189.         case 0x48: conv= rgb32tobgr16; break;

  2190.         case 0x63: conv= rgb15tobgr24; break;

  2191.         case 0x64: conv= rgb16tobgr24; break;

  2192.         case 0x66: conv= rgb24tobgr24; break;

  2193.         case 0x68: conv= rgb32tobgr24; break;

  2194.         case 0x83: conv= rgb15tobgr32; break;

  2195.         case 0x84: conv= rgb16tobgr32; break;

  2196.         case 0x86: conv= rgb24tobgr32; break;

  2197.         case 0x88: conv= rgb32tobgr32; break;

  2198.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2199.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2200.         }

  2201.     } else {

  2202.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2203.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  2204.     }

  2205. 

  2206.     if(conv) {

  2207.         uint8_t *srcPtr= src[0];

  2208.         if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)

  2209.             srcPtr += ALT32_CORR;

  2210. 

  2211.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  2212.             conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  2213.         else {

  2214.             int i;

  2215.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2216. 

  2217.             for (i=0; i<srcSliceH; i++) {

  2218.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  2219.                 srcPtr+= srcStride[0];

  2220.                 dstPtr+= dstStride[0];

  2221.             }

  2222.         }

  2223.     }

  2224.     return srcSliceH;

  2225. }

  2226. 

  2227. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2228.                               int srcSliceH, uint8_t* dst[], int dstStride[])

  2229. {

  2230. 

  2231.     rgb24toyv12(

  2232.         src[0],

  2233.         dst[0]+ srcSliceY    *dstStride[0],

  2234.         dst[1]+(srcSliceY>>1)*dstStride[1],

  2235.         dst[2]+(srcSliceY>>1)*dstStride[2],

  2236.         c->srcW, srcSliceH,

  2237.         dstStride[0], dstStride[1], srcStride[0]);

  2238.     if (dst[3])

  2239.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2240.     return srcSliceH;

  2241. }

  2242. 

  2243. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2244.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  2245. {

  2246.     int i;

  2247. 

  2248.     /* copy Y */

  2249.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  2250.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  2251.     else {

  2252.         uint8_t *srcPtr= src[0];

  2253.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2254. 

  2255.         for (i=0; i<srcSliceH; i++) {

  2256.             memcpy(dstPtr, srcPtr, c->srcW);

  2257.             srcPtr+= srcStride[0];

  2258.             dstPtr+= dstStride[0];

  2259.         }

  2260.     }

  2261. 

  2262.     if (c->dstFormat==PIX_FMT_YUV420P || c->dstFormat==PIX_FMT_YUVA420P) {

  2263.         planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  2264.                  srcSliceH >> 2, srcStride[1], dstStride[1]);

  2265.         planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  2266.                  srcSliceH >> 2, srcStride[2], dstStride[2]);

  2267.     } else {

  2268.         planar2x(src[1], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  2269.                  srcSliceH >> 2, srcStride[1], dstStride[2]);

  2270.         planar2x(src[2], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  2271.                  srcSliceH >> 2, srcStride[2], dstStride[1]);

  2272.     }

  2273.     if (dst[3])

  2274.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2275.     return srcSliceH;

  2276. }

  2277. 

  2278. /* unscaled copy like stuff (assumes nearly identical formats) */

  2279. static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2280.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2281. {

  2282.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  2283.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  2284.     else {

  2285.         int i;

  2286.         uint8_t *srcPtr= src[0];

  2287.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2288.         int length=0;

  2289. 

  2290.         /* universal length finder */

  2291.         while(length+c->srcW <= FFABS(dstStride[0])

  2292.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  2293.         assert(length!=0);

  2294. 

  2295.         for (i=0; i<srcSliceH; i++) {

  2296.             memcpy(dstPtr, srcPtr, length);

  2297.             srcPtr+= srcStride[0];

  2298.             dstPtr+= dstStride[0];

  2299.         }

  2300.     }

  2301.     return srcSliceH;

  2302. }

  2303. 

  2304. static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2305.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2306. {

  2307.     int plane, i, j;

  2308.     for (plane=0; plane<4; plane++) {

  2309.         int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  2310.         int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  2311.         int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  2312.         uint8_t *srcPtr= src[plane];

  2313.         uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  2314. 

  2315.         if (!dst[plane]) continue;

  2316.         // ignore palette for GRAY8

  2317.         if (plane == 1 && !dst[2]) continue;

  2318.         if (!src[plane] || (plane == 1 && !src[2])) {

  2319.             if(is16BPS(c->dstFormat))

  2320.                 length*=2;

  2321.             fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);

  2322.         } else {

  2323.             if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {

  2324.                 if (!isBE(c->srcFormat)) srcPtr++;

  2325.                 for (i=0; i<height; i++) {

  2326.                     for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  2327.                     srcPtr+= srcStride[plane];

  2328.                     dstPtr+= dstStride[plane];

  2329.                 }

  2330.             } else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {

  2331.                 for (i=0; i<height; i++) {

  2332.                     for (j=0; j<length; j++) {

  2333.                         dstPtr[ j<<1   ] = srcPtr[j];

  2334.                         dstPtr[(j<<1)+1] = srcPtr[j];

  2335.                     }

  2336.                     srcPtr+= srcStride[plane];

  2337.                     dstPtr+= dstStride[plane];

  2338.                 }

  2339.             } else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)

  2340.                   && isBE(c->srcFormat) != isBE(c->dstFormat)) {

  2341. 

  2342.                 for (i=0; i<height; i++) {

  2343.                     for (j=0; j<length; j++)

  2344.                         ((uint16_t*)dstPtr)[j] = bswap_16(((uint16_t*)srcPtr)[j]);

  2345.                     srcPtr+= srcStride[plane];

  2346.                     dstPtr+= dstStride[plane];

  2347.                 }

  2348.             } else if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  2349.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  2350.             else {

  2351.                 if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))

  2352.                     length*=2;

  2353.                 for (i=0; i<height; i++) {

  2354.                     memcpy(dstPtr, srcPtr, length);

  2355.                     srcPtr+= srcStride[plane];

  2356.                     dstPtr+= dstStride[plane];

  2357.                 }

  2358.             }

  2359.         }

  2360.     }

  2361.     return srcSliceH;

  2362. }

  2363. 

  2364. 

  2365. static void getSubSampleFactors(int *h, int *v, int format)

  2366. {

  2367.     switch(format) {

  2368.     case PIX_FMT_UYVY422:

  2369.     case PIX_FMT_YUYV422:

  2370.         *h=1;

  2371.         *v=0;

  2372.         break;

  2373.     case PIX_FMT_YUV420P:

  2374.     case PIX_FMT_YUV420P16LE:

  2375.     case PIX_FMT_YUV420P16BE:

  2376.     case PIX_FMT_YUVA420P:

  2377.     case PIX_FMT_GRAY16BE:

  2378.     case PIX_FMT_GRAY16LE:

  2379.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  2380.     case PIX_FMT_NV12:

  2381.     case PIX_FMT_NV21:

  2382.         *h=1;

  2383.         *v=1;

  2384.         break;

  2385.     case PIX_FMT_YUV440P:

  2386.         *h=0;

  2387.         *v=1;

  2388.         break;

  2389.     case PIX_FMT_YUV410P:

  2390.         *h=2;

  2391.         *v=2;

  2392.         break;

  2393.     case PIX_FMT_YUV444P:

  2394.     case PIX_FMT_YUV444P16LE:

  2395.     case PIX_FMT_YUV444P16BE:

  2396.         *h=0;

  2397.         *v=0;

  2398.         break;

  2399.     case PIX_FMT_YUV422P:

  2400.     case PIX_FMT_YUV422P16LE:

  2401.     case PIX_FMT_YUV422P16BE:

  2402.         *h=1;

  2403.         *v=0;

  2404.         break;

  2405.     case PIX_FMT_YUV411P:

  2406.         *h=2;

  2407.         *v=0;

  2408.         break;

  2409.     default:

  2410.         *h=0;

  2411.         *v=0;

  2412.         break;

  2413.     }

  2414. }

  2415. 

  2416. static uint16_t roundToInt16(int64_t f)

  2417. {

  2418.     int r= (f + (1<<15))>>16;

  2419.          if (r<-0x7FFF) return 0x8000;

  2420.     else if (r> 0x7FFF) return 0x7FFF;

  2421.     else                return r;

  2422. }

  2423. 

  2424. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation)

  2425. {

  2426.     int64_t crv =  inv_table[0];

  2427.     int64_t cbu =  inv_table[1];

  2428.     int64_t cgu = -inv_table[2];

  2429.     int64_t cgv = -inv_table[3];

  2430.     int64_t cy  = 1<<16;

  2431.     int64_t oy  = 0;

  2432. 

  2433.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  2434.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  2435. 

  2436.     c->brightness= brightness;

  2437.     c->contrast  = contrast;

  2438.     c->saturation= saturation;

  2439.     c->srcRange  = srcRange;

  2440.     c->dstRange  = dstRange;

  2441.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2442. 

  2443.     c->uOffset=   0x0400040004000400LL;

  2444.     c->vOffset=   0x0400040004000400LL;

  2445. 

  2446.     if (!srcRange) {

  2447.         cy= (cy*255) / 219;

  2448.         oy= 16<<16;

  2449.     } else {

  2450.         crv= (crv*224) / 255;

  2451.         cbu= (cbu*224) / 255;

  2452.         cgu= (cgu*224) / 255;

  2453.         cgv= (cgv*224) / 255;

  2454.     }

  2455. 

  2456.     cy = (cy *contrast             )>>16;

  2457.     crv= (crv*contrast * saturation)>>32;

  2458.     cbu= (cbu*contrast * saturation)>>32;

  2459.     cgu= (cgu*contrast * saturation)>>32;

  2460.     cgv= (cgv*contrast * saturation)>>32;

  2461. 

  2462.     oy -= 256*brightness;

  2463. 

  2464.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  2465.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  2466.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  2467.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  2468.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  2469.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  2470. 

  2471.     c->yuv2rgb_y_coeff  = (int16_t)roundToInt16(cy <<13);

  2472.     c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);

  2473.     c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);

  2474.     c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);

  2475.     c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);

  2476.     c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);

  2477. 

  2478.     ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  2479.     //FIXME factorize

  2480. 

  2481. #ifdef COMPILE_ALTIVEC

  2482.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  2483.         ff_yuv2rgb_init_tables_altivec(c, inv_table, brightness, contrast, saturation);

  2484. #endif

  2485.     return 0;

  2486. }

  2487. 

  2488. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation)

  2489. {

  2490.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2491. 

  2492.     *inv_table = c->srcColorspaceTable;

  2493.     *table     = c->dstColorspaceTable;

  2494.     *srcRange  = c->srcRange;

  2495.     *dstRange  = c->dstRange;

  2496.     *brightness= c->brightness;

  2497.     *contrast  = c->contrast;

  2498.     *saturation= c->saturation;

  2499. 

  2500.     return 0;

  2501. }

  2502. 

  2503. static int handle_jpeg(enum PixelFormat *format)

  2504. {

  2505.     switch (*format) {

  2506.     case PIX_FMT_YUVJ420P:

  2507.         *format = PIX_FMT_YUV420P;

  2508.         return 1;

  2509.     case PIX_FMT_YUVJ422P:

  2510.         *format = PIX_FMT_YUV422P;

  2511.         return 1;

  2512.     case PIX_FMT_YUVJ444P:

  2513.         *format = PIX_FMT_YUV444P;

  2514.         return 1;

  2515.     case PIX_FMT_YUVJ440P:

  2516.         *format = PIX_FMT_YUV440P;

  2517.         return 1;

  2518.     default:

  2519.         return 0;

  2520.     }

  2521. }

  2522. 

  2523. SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  2524.                            SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)

  2525. {

  2526. 

  2527.     SwsContext *c;

  2528.     int i;

  2529.     int usesVFilter, usesHFilter;

  2530.     int unscaled, needsDither;

  2531.     int srcRange, dstRange;

  2532.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2533. #if ARCH_X86

  2534.     if (flags & SWS_CPU_CAPS_MMX)

  2535.         __asm__ volatile("emms\n\t"::: "memory");

  2536. #endif

  2537. 

  2538. #if !CONFIG_RUNTIME_CPUDETECT //ensure that the flags match the compiled variant if cpudetect is off

  2539.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2540. #if   COMPILE_TEMPLATE_MMX2

  2541.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2542. #elif COMPILE_TEMPLATE_AMD3DNOW

  2543.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2544. #elif COMPILE_TEMPLATE_MMX

  2545.     flags |= SWS_CPU_CAPS_MMX;

  2546. #elif COMPILE_TEMPLATE_ALTIVEC

  2547.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2548. #elif ARCH_BFIN

  2549.     flags |= SWS_CPU_CAPS_BFIN;

  2550. #endif

  2551. #endif /* CONFIG_RUNTIME_CPUDETECT */

  2552.     if (clip_table[512] != 255) globalInit();

  2553.     if (!rgb15to16) sws_rgb2rgb_init(flags);

  2554. 

  2555.     unscaled = (srcW == dstW && srcH == dstH);

  2556.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2557.         && (fmt_depth(dstFormat))<24

  2558.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2559. 

  2560.     srcRange = handle_jpeg(&srcFormat);

  2561.     dstRange = handle_jpeg(&dstFormat);

  2562. 

  2563.     if (!isSupportedIn(srcFormat)) {

  2564.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));

  2565.         return NULL;

  2566.     }

  2567.     if (!isSupportedOut(dstFormat)) {

  2568.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));

  2569.         return NULL;

  2570.     }

  2571. 

  2572.     i= flags & ( SWS_POINT

  2573.                 |SWS_AREA

  2574.                 |SWS_BILINEAR

  2575.                 |SWS_FAST_BILINEAR

  2576.                 |SWS_BICUBIC

  2577.                 |SWS_X

  2578.                 |SWS_GAUSS

  2579.                 |SWS_LANCZOS

  2580.                 |SWS_SINC

  2581.                 |SWS_SPLINE

  2582.                 |SWS_BICUBLIN);

  2583.     if(!i || (i & (i-1))) {

  2584.         av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be chosen\n");

  2585.         return NULL;

  2586.     }

  2587. 

  2588.     /* sanity check */

  2589.     if (srcW<4 || srcH<1 || dstW<8 || dstH<1) { //FIXME check if these are enough and try to lowwer them after fixing the relevant parts of the code

  2590.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2591.                srcW, srcH, dstW, dstH);

  2592.         return NULL;

  2593.     }

  2594.     if(srcW > VOFW || dstW > VOFW) {

  2595.         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile-time maximum width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");

  2596.         return NULL;

  2597.     }

  2598. 

  2599.     if (!dstFilter) dstFilter= &dummyFilter;

  2600.     if (!srcFilter) srcFilter= &dummyFilter;

  2601. 

  2602.     FF_ALLOCZ_OR_GOTO(NULL, c, sizeof(SwsContext), fail);

  2603. 

  2604.     c->av_class = &sws_context_class;

  2605.     c->srcW= srcW;

  2606.     c->srcH= srcH;

  2607.     c->dstW= dstW;

  2608.     c->dstH= dstH;

  2609.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2610.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2611.     c->flags= flags;

  2612.     c->dstFormat= dstFormat;

  2613.     c->srcFormat= srcFormat;

  2614.     c->vRounder= 4* 0x0001000100010001ULL;

  2615. 

  2616.     usesHFilter= usesVFilter= 0;

  2617.     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;

  2618.     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;

  2619.     if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;

  2620.     if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;

  2621.     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;

  2622.     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;

  2623.     if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;

  2624.     if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;

  2625. 

  2626.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2627.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2628. 

  2629.     // reuse chroma for 2 pixels RGB/BGR unless user wants full chroma interpolation

  2630.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2631. 

  2632.     // drop some chroma lines if the user wants it

  2633.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2634.     c->chrSrcVSubSample+= c->vChrDrop;

  2635. 

  2636.     // drop every other pixel for chroma calculation unless user wants full chroma

  2637.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2638.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2639.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2640.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE

  2641.       && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2642.         c->chrSrcHSubSample=1;

  2643. 

  2644.     if (param) {

  2645.         c->param[0] = param[0];

  2646.         c->param[1] = param[1];

  2647.     } else {

  2648.         c->param[0] =

  2649.         c->param[1] = SWS_PARAM_DEFAULT;

  2650.     }

  2651. 

  2652.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2653.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2654.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2655.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2656.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2657. 

  2658.     sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);

  2659. 

  2660.     /* unscaled special cases */

  2661.     if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat))) {

  2662.         /* yv12_to_nv12 */

  2663.         if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {

  2664.             c->swScale= PlanarToNV12Wrapper;

  2665.         }

  2666.         /* yuv2bgr */

  2667.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && (isBGR(dstFormat) || isRGB(dstFormat))

  2668.             && !(flags & SWS_ACCURATE_RND) && !(dstH&1)) {

  2669.             c->swScale= ff_yuv2rgb_get_func_ptr(c);

  2670.         }

  2671. 

  2672.         if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT)) {

  2673.             c->swScale= yvu9toyv12Wrapper;

  2674.         }

  2675. 

  2676.         /* bgr24toYV12 */

  2677.         if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))

  2678.             c->swScale= bgr24toyv12Wrapper;

  2679. 

  2680.         /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  2681.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2682.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2683.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2684.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2685.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2686.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2687.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2688.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2689.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2690.            && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  2691.                                              && dstFormat != PIX_FMT_RGB32_1

  2692.                                              && dstFormat != PIX_FMT_BGR32_1

  2693.            && srcFormat != PIX_FMT_RGB48LE   && dstFormat != PIX_FMT_RGB48LE

  2694.            && srcFormat != PIX_FMT_RGB48BE   && dstFormat != PIX_FMT_RGB48BE

  2695.            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2696.              c->swScale= rgb2rgbWrapper;

  2697. 

  2698.         if ((usePal(srcFormat) && (

  2699.                  dstFormat == PIX_FMT_RGB32   ||

  2700.                  dstFormat == PIX_FMT_RGB32_1 ||

  2701.                  dstFormat == PIX_FMT_RGB24   ||

  2702.                  dstFormat == PIX_FMT_BGR32   ||

  2703.                  dstFormat == PIX_FMT_BGR32_1 ||

  2704.                  dstFormat == PIX_FMT_BGR24)))

  2705.              c->swScale= pal2rgbWrapper;

  2706. 

  2707.         if (srcFormat == PIX_FMT_YUV422P) {

  2708.             if (dstFormat == PIX_FMT_YUYV422)

  2709.                 c->swScale= YUV422PToYuy2Wrapper;

  2710.             else if (dstFormat == PIX_FMT_UYVY422)

  2711.                 c->swScale= YUV422PToUyvyWrapper;

  2712.         }

  2713. 

  2714.         /* LQ converters if -sws 0 or -sws 4*/

  2715.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {

  2716.             /* yv12_to_yuy2 */

  2717.             if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {

  2718.                 if (dstFormat == PIX_FMT_YUYV422)

  2719.                     c->swScale= PlanarToYuy2Wrapper;

  2720.                 else if (dstFormat == PIX_FMT_UYVY422)

  2721.                     c->swScale= PlanarToUyvyWrapper;

  2722.             }

  2723.         }

  2724.         if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  2725.             c->swScale= YUYV2YUV420Wrapper;

  2726.         if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  2727.             c->swScale= UYVY2YUV420Wrapper;

  2728.         if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)

  2729.             c->swScale= YUYV2YUV422Wrapper;

  2730.         if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)

  2731.             c->swScale= UYVY2YUV422Wrapper;

  2732. 

  2733. #ifdef COMPILE_ALTIVEC

  2734.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2735.             !(c->flags & SWS_BITEXACT) &&

  2736.             srcFormat == PIX_FMT_YUV420P) {

  2737.           // unscaled YV12 -> packed YUV, we want speed

  2738.           if (dstFormat == PIX_FMT_YUYV422)

  2739.               c->swScale= yv12toyuy2_unscaled_altivec;

  2740.           else if (dstFormat == PIX_FMT_UYVY422)

  2741.               c->swScale= yv12touyvy_unscaled_altivec;

  2742.         }

  2743. #endif

  2744. 

  2745.         /* simple copy */

  2746.         if (  srcFormat == dstFormat

  2747.             || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)

  2748.             || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)

  2749.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2750.             || (isPlanarYUV(dstFormat) && isGray(srcFormat))

  2751.             || (isGray(dstFormat) && isGray(srcFormat))

  2752.             || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)

  2753.                 && c->chrDstHSubSample == c->chrSrcHSubSample

  2754.                 && c->chrDstVSubSample == c->chrSrcVSubSample

  2755.                 && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21

  2756.                 && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))

  2757.         {

  2758.             if (isPacked(c->srcFormat))

  2759.                 c->swScale= packedCopy;

  2760.             else /* Planar YUV or gray */

  2761.                 c->swScale= planarCopy;

  2762.         }

  2763. #if ARCH_BFIN

  2764.         if (flags & SWS_CPU_CAPS_BFIN)

  2765.             ff_bfin_get_unscaled_swscale (c);

  2766. #endif

  2767. 

  2768.         if (c->swScale) {

  2769.             if (flags&SWS_PRINT_INFO)

  2770.                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",

  2771.                        sws_format_name(srcFormat), sws_format_name(dstFormat));

  2772.             return c;

  2773.         }

  2774.     }

  2775. 

  2776.     if (flags & SWS_CPU_CAPS_MMX2) {

  2777.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2778.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR)) {

  2779.             if (flags&SWS_PRINT_INFO)

  2780.                 av_log(c, AV_LOG_INFO, "output width is not a multiple of 32 -> no MMX2 scaler\n");

  2781.         }

  2782.         if (usesHFilter) c->canMMX2BeUsed=0;

  2783.     }

  2784.     else

  2785.         c->canMMX2BeUsed=0;

  2786. 

  2787.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2788.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2789. 

  2790.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2791.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2792.     // n-2 is the last chrominance sample available

  2793.     // this is not perfect, but no one should notice the difference, the more correct variant

  2794.     // would be like the vertical one, but that would require some special code for the

  2795.     // first and last pixel

  2796.     if (flags&SWS_FAST_BILINEAR) {

  2797.         if (c->canMMX2BeUsed) {

  2798.             c->lumXInc+= 20;

  2799.             c->chrXInc+= 20;

  2800.         }

  2801.         //we don't use the x86 asm scaler if MMX is available

  2802.         else if (flags & SWS_CPU_CAPS_MMX) {

  2803.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2804.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2805.         }

  2806.     }

  2807. 

  2808.     /* precalculate horizontal scaler filter coefficients */

  2809.     {

  2810.         const int filterAlign=

  2811.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2812.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2813.             1;

  2814. 

  2815.         if (initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2816.                        srcW      ,       dstW, filterAlign, 1<<14,

  2817.                        (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2818.                        srcFilter->lumH, dstFilter->lumH, c->param) < 0)

  2819.             goto fail;

  2820.         if (initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2821.                        c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2822.                        (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2823.                        srcFilter->chrH, dstFilter->chrH, c->param) < 0)

  2824.             goto fail;

  2825. 

  2826. #if defined(COMPILE_MMX2)

  2827. // can't downscale !!!

  2828.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR)) {

  2829.             c->lumMmx2FilterCodeSize = initMMX2HScaler(      dstW, c->lumXInc, NULL, NULL, NULL, 8);

  2830.             c->chrMmx2FilterCodeSize = initMMX2HScaler(c->chrDstW, c->chrXInc, NULL, NULL, NULL, 4);

  2831. 

  2832. #ifdef MAP_ANONYMOUS

  2833.             c->lumMmx2FilterCode = mmap(NULL, c->lumMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2834.             c->chrMmx2FilterCode = mmap(NULL, c->chrMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2835. #elif HAVE_VIRTUALALLOC

  2836.             c->lumMmx2FilterCode = VirtualAlloc(NULL, c->lumMmx2FilterCodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2837.             c->chrMmx2FilterCode = VirtualAlloc(NULL, c->chrMmx2FilterCodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2838. #else

  2839.             c->lumMmx2FilterCode = av_malloc(c->lumMmx2FilterCodeSize);

  2840.             c->chrMmx2FilterCode = av_malloc(c->chrMmx2FilterCodeSize);

  2841. #endif

  2842. 

  2843.             FF_ALLOCZ_OR_GOTO(c, c->lumMmx2Filter   , (dstW        /8+8)*sizeof(int16_t), fail);

  2844.             FF_ALLOCZ_OR_GOTO(c, c->chrMmx2Filter   , (c->chrDstW  /4+8)*sizeof(int16_t), fail);

  2845.             FF_ALLOCZ_OR_GOTO(c, c->lumMmx2FilterPos, (dstW      /2/8+8)*sizeof(int32_t), fail);

  2846.             FF_ALLOCZ_OR_GOTO(c, c->chrMmx2FilterPos, (c->chrDstW/2/4+8)*sizeof(int32_t), fail);

  2847. 

  2848.             initMMX2HScaler(      dstW, c->lumXInc, c->lumMmx2FilterCode, c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2849.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->chrMmx2FilterCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2850. 

  2851. #ifdef MAP_ANONYMOUS

  2852.             mprotect(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize, PROT_EXEC | PROT_READ);

  2853.             mprotect(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize, PROT_EXEC | PROT_READ);

  2854. #endif

  2855.         }

  2856. #endif /* defined(COMPILE_MMX2) */

  2857.     } // initialize horizontal stuff

  2858. 

  2859. 

  2860. 

  2861.     /* precalculate vertical scaler filter coefficients */

  2862.     {

  2863.         const int filterAlign=

  2864.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2865.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2866.             1;

  2867. 

  2868.         if (initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2869.                    srcH      ,        dstH, filterAlign, (1<<12),

  2870.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2871.                    srcFilter->lumV, dstFilter->lumV, c->param) < 0)

  2872.             goto fail;

  2873.         if (initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2874.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12),

  2875.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2876.                    srcFilter->chrV, dstFilter->chrV, c->param) < 0)

  2877.             goto fail;

  2878. 

  2879. #ifdef COMPILE_ALTIVEC

  2880.         FF_ALLOC_OR_GOTO(c, c->vYCoeffsBank, sizeof (vector signed short)*c->vLumFilterSize*c->dstH, fail);

  2881.         FF_ALLOC_OR_GOTO(c, c->vCCoeffsBank, sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH, fail);

  2882. 

  2883.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2884.             int j;

  2885.             short *p = (short *)&c->vYCoeffsBank[i];

  2886.             for (j=0;j<8;j++)

  2887.                 p[j] = c->vLumFilter[i];

  2888.         }

  2889. 

  2890.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2891.             int j;

  2892.             short *p = (short *)&c->vCCoeffsBank[i];

  2893.             for (j=0;j<8;j++)

  2894.                 p[j] = c->vChrFilter[i];

  2895.         }

  2896. #endif

  2897.     }

  2898. 

  2899.     // calculate buffer sizes so that they won't run out while handling these damn slices

  2900.     c->vLumBufSize= c->vLumFilterSize;

  2901.     c->vChrBufSize= c->vChrFilterSize;

  2902.     for (i=0; i<dstH; i++) {

  2903.         int chrI= i*c->chrDstH / dstH;

  2904.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2905.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2906. 

  2907.         nextSlice>>= c->chrSrcVSubSample;

  2908.         nextSlice<<= c->chrSrcVSubSample;

  2909.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2910.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];

  2911.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2912.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2913.     }

  2914. 

  2915.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2916.     // allocate several megabytes to handle all possible cases)

  2917.     FF_ALLOC_OR_GOTO(c, c->lumPixBuf, c->vLumBufSize*2*sizeof(int16_t*), fail);

  2918.     FF_ALLOC_OR_GOTO(c, c->chrPixBuf, c->vChrBufSize*2*sizeof(int16_t*), fail);

  2919.     if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat))

  2920.         FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf, c->vLumBufSize*2*sizeof(int16_t*), fail);

  2921.     //Note we need at least one pixel more at the end because of the MMX code (just in case someone wanna replace the 4000/8000)

  2922.     /* align at 16 bytes for AltiVec */

  2923.     for (i=0; i<c->vLumBufSize; i++) {

  2924.         FF_ALLOCZ_OR_GOTO(c, c->lumPixBuf[i+c->vLumBufSize], VOF+1, fail);

  2925.         c->lumPixBuf[i] = c->lumPixBuf[i+c->vLumBufSize];

  2926.     }

  2927.     for (i=0; i<c->vChrBufSize; i++) {

  2928.         FF_ALLOC_OR_GOTO(c, c->chrPixBuf[i+c->vChrBufSize], (VOF+1)*2, fail);

  2929.         c->chrPixBuf[i] = c->chrPixBuf[i+c->vChrBufSize];

  2930.     }

  2931.     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf)

  2932.         for (i=0; i<c->vLumBufSize; i++) {

  2933.             FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf[i+c->vLumBufSize], VOF+1, fail);

  2934.             c->alpPixBuf[i] = c->alpPixBuf[i+c->vLumBufSize];

  2935.         }

  2936. 

  2937.     //try to avoid drawing green stuff between the right end and the stride end

  2938.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);

  2939. 

  2940.     assert(2*VOFW == VOF);

  2941. 

  2942.     assert(c->chrDstH <= dstH);

  2943. 

  2944.     if (flags&SWS_PRINT_INFO) {

  2945. #ifdef DITHER1XBPP

  2946.         const char *dither= " dithered";

  2947. #else

  2948.         const char *dither= "";

  2949. #endif

  2950.         if (flags&SWS_FAST_BILINEAR)

  2951.             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");

  2952.         else if (flags&SWS_BILINEAR)

  2953.             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");

  2954.         else if (flags&SWS_BICUBIC)

  2955.             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");

  2956.         else if (flags&SWS_X)

  2957.             av_log(c, AV_LOG_INFO, "Experimental scaler, ");

  2958.         else if (flags&SWS_POINT)

  2959.             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");

  2960.         else if (flags&SWS_AREA)

  2961.             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");

  2962.         else if (flags&SWS_BICUBLIN)

  2963.             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");

  2964.         else if (flags&SWS_GAUSS)

  2965.             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");

  2966.         else if (flags&SWS_SINC)

  2967.             av_log(c, AV_LOG_INFO, "Sinc scaler, ");

  2968.         else if (flags&SWS_LANCZOS)

  2969.             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");

  2970.         else if (flags&SWS_SPLINE)

  2971.             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");

  2972.         else

  2973.             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");

  2974. 

  2975.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2976.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  2977.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2978.         else

  2979.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  2980.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  2981. 

  2982.         if (flags & SWS_CPU_CAPS_MMX2)

  2983.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  2984.         else if (flags & SWS_CPU_CAPS_3DNOW)

  2985.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  2986.         else if (flags & SWS_CPU_CAPS_MMX)

  2987.             av_log(c, AV_LOG_INFO, "using MMX\n");

  2988.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  2989.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  2990.         else

  2991.             av_log(c, AV_LOG_INFO, "using C\n");

  2992.     }

  2993. 

  2994.     if (flags & SWS_PRINT_INFO) {

  2995.         if (flags & SWS_CPU_CAPS_MMX) {

  2996.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2997.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  2998.             else {

  2999.                 if (c->hLumFilterSize==4)

  3000.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");

  3001.                 else if (c->hLumFilterSize==8)

  3002.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");

  3003.                 else

  3004.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");

  3005. 

  3006.                 if (c->hChrFilterSize==4)

  3007.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");

  3008.                 else if (c->hChrFilterSize==8)

  3009.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");

  3010.                 else

  3011.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");

  3012.             }

  3013.         } else {

  3014. #if ARCH_X86

  3015.             av_log(c, AV_LOG_VERBOSE, "using x86 asm scaler for horizontal scaling\n");

  3016. #else

  3017.             if (flags & SWS_FAST_BILINEAR)

  3018.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");

  3019.             else

  3020.                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");

  3021. #endif

  3022.         }

  3023.         if (isPlanarYUV(dstFormat)) {

  3024.             if (c->vLumFilterSize==1)

  3025.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3026.             else

  3027.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3028.         } else {

  3029.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  3030.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  3031.                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3032.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  3033.                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3034.             else

  3035.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3036.         }

  3037. 

  3038.         if (dstFormat==PIX_FMT_BGR24)

  3039.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 converter\n",

  3040.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  3041.         else if (dstFormat==PIX_FMT_RGB32)

  3042.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3043.         else if (dstFormat==PIX_FMT_BGR565)

  3044.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3045.         else if (dstFormat==PIX_FMT_BGR555)

  3046.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3047. 

  3048.         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  3049.     }

  3050.     if (flags & SWS_PRINT_INFO) {

  3051.         av_log(c, AV_LOG_DEBUG, "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  3052.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  3053.         av_log(c, AV_LOG_DEBUG, "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  3054.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  3055.     }

  3056. 

  3057.     c->swScale= getSwsFunc(c);

  3058.     return c;

  3059. 

  3060. fail:

  3061.     sws_freeContext(c);

  3062.     return NULL;

  3063. }

  3064. 

  3065. static void reset_ptr(uint8_t* src[], int format)

  3066. {

  3067.     if(!isALPHA(format))

  3068.         src[3]=NULL;

  3069.     if(!isPlanarYUV(format)) {

  3070.         src[3]=src[2]=NULL;

  3071.         if(   format != PIX_FMT_PAL8

  3072.            && format != PIX_FMT_RGB8

  3073.            && format != PIX_FMT_BGR8

  3074.            && format != PIX_FMT_RGB4_BYTE

  3075.            && format != PIX_FMT_BGR4_BYTE

  3076.           )

  3077.             src[1]= NULL;

  3078.     }

  3079. }

  3080. 

  3081. /**

  3082.  * swscale wrapper, so we don't need to export the SwsContext.

  3083.  * Assumes planar YUV to be in YUV order instead of YVU.

  3084.  */

  3085. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  3086.               int srcSliceH, uint8_t* dst[], int dstStride[])

  3087. {

  3088.     int i;

  3089.     uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};

  3090.     uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};

  3091. 

  3092.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  3093.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  3094.         return 0;

  3095.     }

  3096.     if (c->sliceDir == 0) {

  3097.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  3098.     }

  3099. 

  3100.     if (usePal(c->srcFormat)) {

  3101.         for (i=0; i<256; i++) {

  3102.             int p, r, g, b,y,u,v;

  3103.             if(c->srcFormat == PIX_FMT_PAL8) {

  3104.                 p=((uint32_t*)(src[1]))[i];

  3105.                 r= (p>>16)&0xFF;

  3106.                 g= (p>> 8)&0xFF;

  3107.                 b=  p     &0xFF;

  3108.             } else if(c->srcFormat == PIX_FMT_RGB8) {

  3109.                 r= (i>>5    )*36;

  3110.                 g= ((i>>2)&7)*36;

  3111.                 b= (i&3     )*85;

  3112.             } else if(c->srcFormat == PIX_FMT_BGR8) {

  3113.                 b= (i>>6    )*85;

  3114.                 g= ((i>>3)&7)*36;

  3115.                 r= (i&7     )*36;

  3116.             } else if(c->srcFormat == PIX_FMT_RGB4_BYTE) {

  3117.                 r= (i>>3    )*255;

  3118.                 g= ((i>>1)&3)*85;

  3119.                 b= (i&1     )*255;

  3120.             } else {

  3121.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  3122.                 b= (i>>3    )*255;

  3123.                 g= ((i>>1)&3)*85;

  3124.                 r= (i&1     )*255;

  3125.             }

  3126.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3127.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3128.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3129.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  3130. 

  3131. 

  3132.             switch(c->dstFormat) {

  3133.             case PIX_FMT_BGR32:

  3134. #if !HAVE_BIGENDIAN

  3135.             case PIX_FMT_RGB24:

  3136. #endif

  3137.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  3138.                 break;

  3139.             case PIX_FMT_BGR32_1:

  3140. #if HAVE_BIGENDIAN

  3141.             case PIX_FMT_BGR24:

  3142. #endif

  3143.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  3144.                 break;

  3145.             case PIX_FMT_RGB32_1:

  3146. #if HAVE_BIGENDIAN

  3147.             case PIX_FMT_RGB24:

  3148. #endif

  3149.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  3150.                 break;

  3151.             case PIX_FMT_RGB32:

  3152. #if !HAVE_BIGENDIAN

  3153.             case PIX_FMT_BGR24:

  3154. #endif

  3155.             default:

  3156.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  3157.             }

  3158.         }

  3159.     }

  3160. 

  3161.     // copy strides, so they can safely be modified

  3162.     if (c->sliceDir == 1) {

  3163.         // slices go from top to bottom

  3164.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};

  3165.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};

  3166. 

  3167.         reset_ptr(src2, c->srcFormat);

  3168.         reset_ptr(dst2, c->dstFormat);

  3169. 

  3170.         /* reset slice direction at end of frame */

  3171.         if (srcSliceY + srcSliceH == c->srcH)

  3172.             c->sliceDir = 0;

  3173. 

  3174.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);

  3175.     } else {

  3176.         // slices go from bottom to top => we flip the image internally

  3177.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};

  3178.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};

  3179. 

  3180.         src2[0] += (srcSliceH-1)*srcStride[0];

  3181.         if (!usePal(c->srcFormat))

  3182.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  3183.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  3184.         src2[3] += (srcSliceH-1)*srcStride[3];

  3185.         dst2[0] += ( c->dstH                      -1)*dstStride[0];

  3186.         dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];

  3187.         dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];

  3188.         dst2[3] += ( c->dstH                      -1)*dstStride[3];

  3189. 

  3190.         reset_ptr(src2, c->srcFormat);

  3191.         reset_ptr(dst2, c->dstFormat);

  3192. 

  3193.         /* reset slice direction at end of frame */

  3194.         if (!srcSliceY)

  3195.             c->sliceDir = 0;

  3196. 

  3197.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  3198.     }

  3199. }

  3200. 

  3201. #if LIBSWSCALE_VERSION_MAJOR < 1

  3202. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  3203.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  3204. {

  3205.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  3206. }

  3207. #endif

  3208. 

  3209. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  3210.                                 float lumaSharpen, float chromaSharpen,

  3211.                                 float chromaHShift, float chromaVShift,

  3212.                                 int verbose)

  3213. {

  3214.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  3215.     if (!filter)

  3216.         return NULL;

  3217. 

  3218.     if (lumaGBlur!=0.0) {

  3219.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  3220.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  3221.     } else {

  3222.         filter->lumH= sws_getIdentityVec();

  3223.         filter->lumV= sws_getIdentityVec();

  3224.     }

  3225. 

  3226.     if (chromaGBlur!=0.0) {

  3227.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  3228.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  3229.     } else {

  3230.         filter->chrH= sws_getIdentityVec();

  3231.         filter->chrV= sws_getIdentityVec();

  3232.     }

  3233. 

  3234.     if (chromaSharpen!=0.0) {

  3235.         SwsVector *id= sws_getIdentityVec();

  3236.         sws_scaleVec(filter->chrH, -chromaSharpen);

  3237.         sws_scaleVec(filter->chrV, -chromaSharpen);

  3238.         sws_addVec(filter->chrH, id);

  3239.         sws_addVec(filter->chrV, id);

  3240.         sws_freeVec(id);

  3241.     }

  3242. 

  3243.     if (lumaSharpen!=0.0) {

  3244.         SwsVector *id= sws_getIdentityVec();

  3245.         sws_scaleVec(filter->lumH, -lumaSharpen);

  3246.         sws_scaleVec(filter->lumV, -lumaSharpen);

  3247.         sws_addVec(filter->lumH, id);

  3248.         sws_addVec(filter->lumV, id);

  3249.         sws_freeVec(id);

  3250.     }

  3251. 

  3252.     if (chromaHShift != 0.0)

  3253.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  3254. 

  3255.     if (chromaVShift != 0.0)

  3256.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  3257. 

  3258.     sws_normalizeVec(filter->chrH, 1.0);

  3259.     sws_normalizeVec(filter->chrV, 1.0);

  3260.     sws_normalizeVec(filter->lumH, 1.0);

  3261.     sws_normalizeVec(filter->lumV, 1.0);

  3262. 

  3263.     if (verbose) sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);

  3264.     if (verbose) sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);

  3265. 

  3266.     return filter;

  3267. }

  3268. 

  3269. SwsVector *sws_allocVec(int length)

  3270. {

  3271.     SwsVector *vec = av_malloc(sizeof(SwsVector));

  3272.     if (!vec)

  3273.         return NULL;

  3274.     vec->length = length;

  3275.     vec->coeff  = av_malloc(sizeof(double) * length);

  3276.     if (!vec->coeff)

  3277.         av_freep(&vec);

  3278.     return vec;

  3279. }

  3280. 

  3281. SwsVector *sws_getGaussianVec(double variance, double quality)

  3282. {

  3283.     const int length= (int)(variance*quality + 0.5) | 1;

  3284.     int i;

  3285.     double middle= (length-1)*0.5;

  3286.     SwsVector *vec= sws_allocVec(length);

  3287. 

  3288.     if (!vec)

  3289.         return NULL;

  3290. 

  3291.     for (i=0; i<length; i++) {

  3292.         double dist= i-middle;

  3293.         vec->coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);

  3294.     }

  3295. 

  3296.     sws_normalizeVec(vec, 1.0);

  3297. 

  3298.     return vec;

  3299. }

  3300. 

  3301. SwsVector *sws_getConstVec(double c, int length)

  3302. {

  3303.     int i;

  3304.     SwsVector *vec= sws_allocVec(length);

  3305. 

  3306.     if (!vec)

  3307.         return NULL;

  3308. 

  3309.     for (i=0; i<length; i++)

  3310.         vec->coeff[i]= c;

  3311. 

  3312.     return vec;

  3313. }

  3314. 

  3315. 

  3316. SwsVector *sws_getIdentityVec(void)

  3317. {

  3318.     return sws_getConstVec(1.0, 1);

  3319. }

  3320. 

  3321. double sws_dcVec(SwsVector *a)

  3322. {

  3323.     int i;

  3324.     double sum=0;

  3325. 

  3326.     for (i=0; i<a->length; i++)

  3327.         sum+= a->coeff[i];

  3328. 

  3329.     return sum;

  3330. }

  3331. 

  3332. void sws_scaleVec(SwsVector *a, double scalar)

  3333. {

  3334.     int i;

  3335. 

  3336.     for (i=0; i<a->length; i++)

  3337.         a->coeff[i]*= scalar;

  3338. }

  3339. 

  3340. void sws_normalizeVec(SwsVector *a, double height)

  3341. {

  3342.     sws_scaleVec(a, height/sws_dcVec(a));

  3343. }

  3344. 

  3345. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b)

  3346. {

  3347.     int length= a->length + b->length - 1;

  3348.     int i, j;

  3349.     SwsVector *vec= sws_getConstVec(0.0, length);

  3350. 

  3351.     if (!vec)

  3352.         return NULL;

  3353. 

  3354.     for (i=0; i<a->length; i++) {

  3355.         for (j=0; j<b->length; j++) {

  3356.             vec->coeff[i+j]+= a->coeff[i]*b->coeff[j];

  3357.         }

  3358.     }

  3359. 

  3360.     return vec;

  3361. }

  3362. 

  3363. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b)

  3364. {

  3365.     int length= FFMAX(a->length, b->length);

  3366.     int i;

  3367.     SwsVector *vec= sws_getConstVec(0.0, length);

  3368. 

  3369.     if (!vec)

  3370.         return NULL;

  3371. 

  3372.     for (i=0; i<a->length; i++) vec->coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3373.     for (i=0; i<b->length; i++) vec->coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  3374. 

  3375.     return vec;

  3376. }

  3377. 

  3378. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b)

  3379. {

  3380.     int length= FFMAX(a->length, b->length);

  3381.     int i;

  3382.     SwsVector *vec= sws_getConstVec(0.0, length);

  3383. 

  3384.     if (!vec)

  3385.         return NULL;

  3386. 

  3387.     for (i=0; i<a->length; i++) vec->coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3388.     for (i=0; i<b->length; i++) vec->coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  3389. 

  3390.     return vec;

  3391. }

  3392. 

  3393. /* shift left / or right if "shift" is negative */

  3394. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift)

  3395. {

  3396.     int length= a->length + FFABS(shift)*2;

  3397.     int i;

  3398.     SwsVector *vec= sws_getConstVec(0.0, length);

  3399. 

  3400.     if (!vec)

  3401.         return NULL;

  3402. 

  3403.     for (i=0; i<a->length; i++) {

  3404.         vec->coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  3405.     }

  3406. 

  3407.     return vec;

  3408. }

  3409. 

  3410. void sws_shiftVec(SwsVector *a, int shift)

  3411. {

  3412.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  3413.     av_free(a->coeff);

  3414.     a->coeff= shifted->coeff;

  3415.     a->length= shifted->length;

  3416.     av_free(shifted);

  3417. }

  3418. 

  3419. void sws_addVec(SwsVector *a, SwsVector *b)

  3420. {

  3421.     SwsVector *sum= sws_sumVec(a, b);

  3422.     av_free(a->coeff);

  3423.     a->coeff= sum->coeff;

  3424.     a->length= sum->length;

  3425.     av_free(sum);

  3426. }

  3427. 

  3428. void sws_subVec(SwsVector *a, SwsVector *b)

  3429. {

  3430.     SwsVector *diff= sws_diffVec(a, b);

  3431.     av_free(a->coeff);

  3432.     a->coeff= diff->coeff;

  3433.     a->length= diff->length;

  3434.     av_free(diff);

  3435. }

  3436. 

  3437. void sws_convVec(SwsVector *a, SwsVector *b)

  3438. {

  3439.     SwsVector *conv= sws_getConvVec(a, b);

  3440.     av_free(a->coeff);

  3441.     a->coeff= conv->coeff;

  3442.     a->length= conv->length;

  3443.     av_free(conv);

  3444. }

  3445. 

  3446. SwsVector *sws_cloneVec(SwsVector *a)

  3447. {

  3448.     int i;

  3449.     SwsVector *vec= sws_allocVec(a->length);

  3450. 

  3451.     if (!vec)

  3452.         return NULL;

  3453. 

  3454.     for (i=0; i<a->length; i++) vec->coeff[i]= a->coeff[i];

  3455. 

  3456.     return vec;

  3457. }

  3458. 

  3459. void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)

  3460. {

  3461.     int i;

  3462.     double max=0;

  3463.     double min=0;

  3464.     double range;

  3465. 

  3466.     for (i=0; i<a->length; i++)

  3467.         if (a->coeff[i]>max) max= a->coeff[i];

  3468. 

  3469.     for (i=0; i<a->length; i++)

  3470.         if (a->coeff[i]<min) min= a->coeff[i];

  3471. 

  3472.     range= max - min;

  3473. 

  3474.     for (i=0; i<a->length; i++) {

  3475.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  3476.         av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);

  3477.         for (;x>0; x--) av_log(log_ctx, log_level, " ");

  3478.         av_log(log_ctx, log_level, "|\n");

  3479.     }

  3480. }

  3481. 

  3482. #if LIBSWSCALE_VERSION_MAJOR < 1

  3483. void sws_printVec(SwsVector *a)

  3484. {

  3485.     sws_printVec2(a, NULL, AV_LOG_DEBUG);

  3486. }

  3487. #endif

  3488. 

  3489. void sws_freeVec(SwsVector *a)

  3490. {

  3491.     if (!a) return;

  3492.     av_freep(&a->coeff);

  3493.     a->length=0;

  3494.     av_free(a);

  3495. }

  3496. 

  3497. void sws_freeFilter(SwsFilter *filter)

  3498. {

  3499.     if (!filter) return;

  3500. 

  3501.     if (filter->lumH) sws_freeVec(filter->lumH);

  3502.     if (filter->lumV) sws_freeVec(filter->lumV);

  3503.     if (filter->chrH) sws_freeVec(filter->chrH);

  3504.     if (filter->chrV) sws_freeVec(filter->chrV);

  3505.     av_free(filter);

  3506. }

  3507. 

  3508. 

  3509. void sws_freeContext(SwsContext *c)

  3510. {

  3511.     int i;

  3512.     if (!c) return;

  3513. 

  3514.     if (c->lumPixBuf) {

  3515.         for (i=0; i<c->vLumBufSize; i++)

  3516.             av_freep(&c->lumPixBuf[i]);

  3517.         av_freep(&c->lumPixBuf);

  3518.     }

  3519. 

  3520.     if (c->chrPixBuf) {

  3521.         for (i=0; i<c->vChrBufSize; i++)

  3522.             av_freep(&c->chrPixBuf[i]);

  3523.         av_freep(&c->chrPixBuf);

  3524.     }

  3525. 

  3526.     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  3527.         for (i=0; i<c->vLumBufSize; i++)

  3528.             av_freep(&c->alpPixBuf[i]);

  3529.         av_freep(&c->alpPixBuf);

  3530.     }

  3531. 

  3532.     av_freep(&c->vLumFilter);

  3533.     av_freep(&c->vChrFilter);

  3534.     av_freep(&c->hLumFilter);

  3535.     av_freep(&c->hChrFilter);

  3536. #ifdef COMPILE_ALTIVEC

  3537.     av_freep(&c->vYCoeffsBank);

  3538.     av_freep(&c->vCCoeffsBank);

  3539. #endif

  3540. 

  3541.     av_freep(&c->vLumFilterPos);

  3542.     av_freep(&c->vChrFilterPos);

  3543.     av_freep(&c->hLumFilterPos);

  3544.     av_freep(&c->hChrFilterPos);

  3545. 

  3546. #if ARCH_X86 && CONFIG_GPL

  3547. #ifdef MAP_ANONYMOUS

  3548.     if (c->lumMmx2FilterCode) munmap(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize);

  3549.     if (c->chrMmx2FilterCode) munmap(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize);

  3550. #elif HAVE_VIRTUALALLOC

  3551.     if (c->lumMmx2FilterCode) VirtualFree(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize, MEM_RELEASE);

  3552.     if (c->chrMmx2FilterCode) VirtualFree(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize, MEM_RELEASE);

  3553. #else

  3554.     av_free(c->lumMmx2FilterCode);

  3555.     av_free(c->chrMmx2FilterCode);

  3556. #endif

  3557.     c->lumMmx2FilterCode=NULL;

  3558.     c->chrMmx2FilterCode=NULL;

  3559. #endif /* ARCH_X86 && CONFIG_GPL */

  3560. 

  3561.     av_freep(&c->lumMmx2Filter);

  3562.     av_freep(&c->chrMmx2Filter);

  3563.     av_freep(&c->lumMmx2FilterPos);

  3564.     av_freep(&c->chrMmx2FilterPos);

  3565.     av_freep(&c->yuvTable);

  3566. 

  3567.     av_free(c);

  3568. }

  3569. 

  3570. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  3571.                                         int srcW, int srcH, enum PixelFormat srcFormat,

  3572.                                         int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  3573.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)

  3574. {

  3575.     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};

  3576. 

  3577.     if (!param)

  3578.         param = default_param;

  3579. 

  3580.     if (context) {

  3581.         if (context->srcW != srcW || context->srcH != srcH ||

  3582.             context->srcFormat != srcFormat ||

  3583.             context->dstW != dstW || context->dstH != dstH ||

  3584.             context->dstFormat != dstFormat || context->flags != flags ||

  3585.             context->param[0] != param[0] || context->param[1] != param[1])

  3586.         {

  3587.             sws_freeContext(context);

  3588.             context = NULL;

  3589.         }

  3590.     }

  3591.     if (!context) {

  3592.         return sws_getContext(srcW, srcH, srcFormat,

  3593.                               dstW, dstH, dstFormat, flags,

  3594.                               srcFilter, dstFilter, param);

  3595.     }

  3596.     return context;

  3597. }