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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/x86_cpu.h"

  78. #include "libavutil/bswap.h"

  79. 

  80. unsigned swscale_version(void)

  81. {

  82.     return LIBSWSCALE_VERSION_INT;

  83. }

  84. 

  85. #undef MOVNTQ

  86. #undef PAVGB

  87. 

  88. //#undef HAVE_MMX2

  89. //#define HAVE_AMD3DNOW

  90. //#undef HAVE_MMX

  91. //#undef ARCH_X86

  92. #define DITHER1XBPP

  93. 

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

  95. 

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

  97. 

  98. #ifdef M_PI

  99. #define PI M_PI

  100. #else

  101. #define PI 3.14159265358979323846

  102. #endif

  103. 

  104. #define isSupportedIn(x)    (       \

  105.            (x)==PIX_FMT_YUV420P     \

  106.         || (x)==PIX_FMT_YUVA420P    \

  107.         || (x)==PIX_FMT_YUYV422     \

  108.         || (x)==PIX_FMT_UYVY422     \

  109.         || (x)==PIX_FMT_RGB48BE     \

  110.         || (x)==PIX_FMT_RGB48LE     \

  111.         || (x)==PIX_FMT_RGB32       \

  112.         || (x)==PIX_FMT_RGB32_1     \

  113.         || (x)==PIX_FMT_BGR24       \

  114.         || (x)==PIX_FMT_BGR565      \

  115.         || (x)==PIX_FMT_BGR555      \

  116.         || (x)==PIX_FMT_BGR32       \

  117.         || (x)==PIX_FMT_BGR32_1     \

  118.         || (x)==PIX_FMT_RGB24       \

  119.         || (x)==PIX_FMT_RGB565      \

  120.         || (x)==PIX_FMT_RGB555      \

  121.         || (x)==PIX_FMT_GRAY8       \

  122.         || (x)==PIX_FMT_YUV410P     \

  123.         || (x)==PIX_FMT_YUV440P     \

  124.         || (x)==PIX_FMT_GRAY16BE    \

  125.         || (x)==PIX_FMT_GRAY16LE    \

  126.         || (x)==PIX_FMT_YUV444P     \

  127.         || (x)==PIX_FMT_YUV422P     \

  128.         || (x)==PIX_FMT_YUV411P     \

  129.         || (x)==PIX_FMT_PAL8        \

  130.         || (x)==PIX_FMT_BGR8        \

  131.         || (x)==PIX_FMT_RGB8        \

  132.         || (x)==PIX_FMT_BGR4_BYTE   \

  133.         || (x)==PIX_FMT_RGB4_BYTE   \

  134.         || (x)==PIX_FMT_YUV440P     \

  135.         || (x)==PIX_FMT_MONOWHITE   \

  136.         || (x)==PIX_FMT_MONOBLACK   \

  137.         || (x)==PIX_FMT_YUV420PLE   \

  138.         || (x)==PIX_FMT_YUV422PLE   \

  139.         || (x)==PIX_FMT_YUV444PLE   \

  140.         || (x)==PIX_FMT_YUV420PBE   \

  141.         || (x)==PIX_FMT_YUV422PBE   \

  142.         || (x)==PIX_FMT_YUV444PBE   \

  143.     )

  144. #define isSupportedOut(x)   (       \

  145.            (x)==PIX_FMT_YUV420P     \

  146.         || (x)==PIX_FMT_YUVA420P    \

  147.         || (x)==PIX_FMT_YUYV422     \

  148.         || (x)==PIX_FMT_UYVY422     \

  149.         || (x)==PIX_FMT_YUV444P     \

  150.         || (x)==PIX_FMT_YUV422P     \

  151.         || (x)==PIX_FMT_YUV411P     \

  152.         || isRGB(x)                 \

  153.         || isBGR(x)                 \

  154.         || (x)==PIX_FMT_NV12        \

  155.         || (x)==PIX_FMT_NV21        \

  156.         || (x)==PIX_FMT_GRAY16BE    \

  157.         || (x)==PIX_FMT_GRAY16LE    \

  158.         || (x)==PIX_FMT_GRAY8       \

  159.         || (x)==PIX_FMT_YUV410P     \

  160.         || (x)==PIX_FMT_YUV440P     \

  161.         || (x)==PIX_FMT_YUV420PLE   \

  162.         || (x)==PIX_FMT_YUV422PLE   \

  163.         || (x)==PIX_FMT_YUV444PLE   \

  164.         || (x)==PIX_FMT_YUV420PBE   \

  165.         || (x)==PIX_FMT_YUV422PBE   \

  166.         || (x)==PIX_FMT_YUV444PBE   \

  167.     )

  168. #define isPacked(x)         (       \

  169.            (x)==PIX_FMT_PAL8        \

  170.         || (x)==PIX_FMT_YUYV422     \

  171.         || (x)==PIX_FMT_UYVY422     \

  172.         || isRGB(x)                 \

  173.         || isBGR(x)                 \

  174.     )

  175. #define usePal(x)           (       \

  176.            (x)==PIX_FMT_PAL8        \

  177.         || (x)==PIX_FMT_BGR4_BYTE   \

  178.         || (x)==PIX_FMT_RGB4_BYTE   \

  179.         || (x)==PIX_FMT_BGR8        \

  180.         || (x)==PIX_FMT_RGB8        \

  181.     )

  182. 

  183. #define RGB2YUV_SHIFT 15

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

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

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

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

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

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

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

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

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

  193. 

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

  195. 

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

  197.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  198.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  199.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  200.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  201.     {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC

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

  203.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //SMPTE 170M

  204.     {0.701 , 0.087 , 0.212 , -0.384, 0.5  -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M

  205. };

  206. 

  207. /*

  208. NOTES

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

  210. 

  211. TODO

  212. more intelligent misalignment avoidance for the horizontal scaler

  213. write special vertical cubic upscale version

  214. optimize C code (YV12 / minmax)

  215. add support for packed pixel YUV input & output

  216. add support for Y8 output

  217. optimize BGR24 & BGR32

  218. add BGR4 output support

  219. write special BGR->BGR scaler

  220. */

  221. 

  222. #if ARCH_X86 && CONFIG_GPL

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

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

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

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

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

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

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

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

  231. 

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

  233.         0x0103010301030103LL,

  234.         0x0200020002000200LL,};

  235. 

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

  237.         0x0602060206020602LL,

  238.         0x0004000400040004LL,};

  239. 

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

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

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

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

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

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

  246. 

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

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

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

  250. 

  251. #ifdef FAST_BGR2YV12

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

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

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

  255. #else

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

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

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

  259. #endif /* FAST_BGR2YV12 */

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

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

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

  263. 

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

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

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

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

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

  269. 

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

  271.     {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},

  272.     {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},

  273. };

  274. 

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

  276. 

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

  278. 

  279. // clipping helper table for C implementations:

  280. static unsigned char clip_table[768];

  281. 

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

  283. 

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

  285. {  1,   3,   1,   3,   1,   3,   1,   3, },

  286. {  2,   0,   2,   0,   2,   0,   2,   0, },

  287. };

  288. 

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

  290. {  6,   2,   6,   2,   6,   2,   6,   2, },

  291. {  0,   4,   0,   4,   0,   4,   0,   4, },

  292. };

  293. 

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

  295. { 17,   9,  23,  15,  16,   8,  22,  14, },

  296. {  5,  29,   3,  27,   4,  28,   2,  26, },

  297. { 21,  13,  19,  11,  20,  12,  18,  10, },

  298. {  0,  24,   6,  30,   1,  25,   7,  31, },

  299. { 16,   8,  22,  14,  17,   9,  23,  15, },

  300. {  4,  28,   2,  26,   5,  29,   3,  27, },

  301. { 20,  12,  18,  10,  21,  13,  19,  11, },

  302. {  1,  25,   7,  31,   0,  24,   6,  30, },

  303. };

  304. 

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

  306. {  0,  55,  14,  68,   3,  58,  17,  72, },

  307. { 37,  18,  50,  32,  40,  22,  54,  35, },

  308. {  9,  64,   5,  59,  13,  67,   8,  63, },

  309. { 46,  27,  41,  23,  49,  31,  44,  26, },

  310. {  2,  57,  16,  71,   1,  56,  15,  70, },

  311. { 39,  21,  52,  34,  38,  19,  51,  33, },

  312. { 11,  66,   7,  62,  10,  65,   6,  60, },

  313. { 48,  30,  43,  25,  47,  29,  42,  24, },

  314. };

  315. 

  316. #if 1

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

  318. {117,  62, 158, 103, 113,  58, 155, 100, },

  319. { 34, 199,  21, 186,  31, 196,  17, 182, },

  320. {144,  89, 131,  76, 141,  86, 127,  72, },

  321. {  0, 165,  41, 206,  10, 175,  52, 217, },

  322. {110,  55, 151,  96, 120,  65, 162, 107, },

  323. { 28, 193,  14, 179,  38, 203,  24, 189, },

  324. {138,  83, 124,  69, 148,  93, 134,  79, },

  325. {  7, 172,  48, 213,   3, 168,  45, 210, },

  326. };

  327. #elif 1

  328. // tries to correct a gamma of 1.5

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

  330. {  0, 143,  18, 200,   2, 156,  25, 215, },

  331. { 78,  28, 125,  64,  89,  36, 138,  74, },

  332. { 10, 180,   3, 161,  16, 195,   8, 175, },

  333. {109,  51,  93,  38, 121,  60, 105,  47, },

  334. {  1, 152,  23, 210,   0, 147,  20, 205, },

  335. { 85,  33, 134,  71,  81,  30, 130,  67, },

  336. { 14, 190,   6, 171,  12, 185,   5, 166, },

  337. {117,  57, 101,  44, 113,  54,  97,  41, },

  338. };

  339. #elif 1

  340. // tries to correct a gamma of 2.0

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

  342. {  0, 124,   8, 193,   0, 140,  12, 213, },

  343. { 55,  14, 104,  42,  66,  19, 119,  52, },

  344. {  3, 168,   1, 145,   6, 187,   3, 162, },

  345. { 86,  31,  70,  21,  99,  39,  82,  28, },

  346. {  0, 134,  11, 206,   0, 129,   9, 200, },

  347. { 62,  17, 114,  48,  58,  16, 109,  45, },

  348. {  5, 181,   2, 157,   4, 175,   1, 151, },

  349. { 95,  36,  78,  26,  90,  34,  74,  24, },

  350. };

  351. #else

  352. // tries to correct a gamma of 2.5

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

  354. {  0, 107,   3, 187,   0, 125,   6, 212, },

  355. { 39,   7,  86,  28,  49,  11, 102,  36, },

  356. {  1, 158,   0, 131,   3, 180,   1, 151, },

  357. { 68,  19,  52,  12,  81,  25,  64,  17, },

  358. {  0, 119,   5, 203,   0, 113,   4, 195, },

  359. { 45,   9,  96,  33,  42,   8,  91,  30, },

  360. {  2, 172,   1, 144,   2, 165,   0, 137, },

  361. { 77,  23,  60,  15,  72,  21,  56,  14, },

  362. };

  363. #endif

  364. 

  365. const char *sws_format_name(enum PixelFormat format)

  366. {

  367.     switch (format) {

  368.         case PIX_FMT_YUV420P:

  369.             return "yuv420p";

  370.         case PIX_FMT_YUVA420P:

  371.             return "yuva420p";

  372.         case PIX_FMT_YUYV422:

  373.             return "yuyv422";

  374.         case PIX_FMT_RGB24:

  375.             return "rgb24";

  376.         case PIX_FMT_BGR24:

  377.             return "bgr24";

  378.         case PIX_FMT_YUV422P:

  379.             return "yuv422p";

  380.         case PIX_FMT_YUV444P:

  381.             return "yuv444p";

  382.         case PIX_FMT_RGB32:

  383.             return "rgb32";

  384.         case PIX_FMT_YUV410P:

  385.             return "yuv410p";

  386.         case PIX_FMT_YUV411P:

  387.             return "yuv411p";

  388.         case PIX_FMT_RGB565:

  389.             return "rgb565";

  390.         case PIX_FMT_RGB555:

  391.             return "rgb555";

  392.         case PIX_FMT_GRAY16BE:

  393.             return "gray16be";

  394.         case PIX_FMT_GRAY16LE:

  395.             return "gray16le";

  396.         case PIX_FMT_GRAY8:

  397.             return "gray8";

  398.         case PIX_FMT_MONOWHITE:

  399.             return "mono white";

  400.         case PIX_FMT_MONOBLACK:

  401.             return "mono black";

  402.         case PIX_FMT_PAL8:

  403.             return "Palette";

  404.         case PIX_FMT_YUVJ420P:

  405.             return "yuvj420p";

  406.         case PIX_FMT_YUVJ422P:

  407.             return "yuvj422p";

  408.         case PIX_FMT_YUVJ444P:

  409.             return "yuvj444p";

  410.         case PIX_FMT_XVMC_MPEG2_MC:

  411.             return "xvmc_mpeg2_mc";

  412.         case PIX_FMT_XVMC_MPEG2_IDCT:

  413.             return "xvmc_mpeg2_idct";

  414.         case PIX_FMT_UYVY422:

  415.             return "uyvy422";

  416.         case PIX_FMT_UYYVYY411:

  417.             return "uyyvyy411";

  418.         case PIX_FMT_RGB32_1:

  419.             return "rgb32x";

  420.         case PIX_FMT_BGR32_1:

  421.             return "bgr32x";

  422.         case PIX_FMT_BGR32:

  423.             return "bgr32";

  424.         case PIX_FMT_BGR565:

  425.             return "bgr565";

  426.         case PIX_FMT_BGR555:

  427.             return "bgr555";

  428.         case PIX_FMT_BGR8:

  429.             return "bgr8";

  430.         case PIX_FMT_BGR4:

  431.             return "bgr4";

  432.         case PIX_FMT_BGR4_BYTE:

  433.             return "bgr4 byte";

  434.         case PIX_FMT_RGB8:

  435.             return "rgb8";

  436.         case PIX_FMT_RGB4:

  437.             return "rgb4";

  438.         case PIX_FMT_RGB4_BYTE:

  439.             return "rgb4 byte";

  440.         case PIX_FMT_RGB48BE:

  441.             return "rgb48be";

  442.         case PIX_FMT_RGB48LE:

  443.             return "rgb48le";

  444.         case PIX_FMT_NV12:

  445.             return "nv12";

  446.         case PIX_FMT_NV21:

  447.             return "nv21";

  448.         case PIX_FMT_YUV440P:

  449.             return "yuv440p";

  450.         case PIX_FMT_VDPAU_H264:

  451.             return "vdpau_h264";

  452.         case PIX_FMT_VDPAU_MPEG1:

  453.             return "vdpau_mpeg1";

  454.         case PIX_FMT_VDPAU_MPEG2:

  455.             return "vdpau_mpeg2";

  456.         case PIX_FMT_VDPAU_WMV3:

  457.             return "vdpau_wmv3";

  458.         case PIX_FMT_VDPAU_VC1:

  459.             return "vdpau_vc1";

  460.         case PIX_FMT_YUV420PLE:

  461.             return "yuv420ple";

  462.         case PIX_FMT_YUV422PLE:

  463.             return "yuv422ple";

  464.         case PIX_FMT_YUV444PLE:

  465.             return "yuv444ple";

  466.         case PIX_FMT_YUV420PBE:

  467.             return "yuv420pbe";

  468.         case PIX_FMT_YUV422PBE:

  469.             return "yuv422pbe";

  470.         case PIX_FMT_YUV444PBE:

  471.             return "yuv444pbe";

  472.         default:

  473.             return "Unknown format";

  474.     }

  475. }

  476. 

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

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

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

  480. {

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

  482.     int i;

  483.     for (i=0; i<dstW; i++)

  484.     {

  485.         int val=1<<18;

  486.         int j;

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

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

  489. 

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

  491.     }

  492. 

  493.     if (uDest)

  494.         for (i=0; i<chrDstW; i++)

  495.         {

  496.             int u=1<<18;

  497.             int v=1<<18;

  498.             int j;

  499.             for (j=0; j<chrFilterSize; j++)

  500.             {

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

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

  503.             }

  504. 

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

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

  507.         }

  508. 

  509.     if (CONFIG_SWSCALE_ALPHA && aDest)

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

  511.             int val=1<<18;

  512.             int j;

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

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

  515. 

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

  517.         }

  518. 

  519. }

  520. 

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

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

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

  524. {

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

  526.     int i;

  527.     for (i=0; i<dstW; i++)

  528.     {

  529.         int val=1<<18;

  530.         int j;

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

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

  533. 

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

  535.     }

  536. 

  537.     if (!uDest)

  538.         return;

  539. 

  540.     if (dstFormat == PIX_FMT_NV12)

  541.         for (i=0; i<chrDstW; i++)

  542.         {

  543.             int u=1<<18;

  544.             int v=1<<18;

  545.             int j;

  546.             for (j=0; j<chrFilterSize; j++)

  547.             {

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

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

  550.             }

  551. 

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

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

  554.         }

  555.     else

  556.         for (i=0; i<chrDstW; i++)

  557.         {

  558.             int u=1<<18;

  559.             int v=1<<18;

  560.             int j;

  561.             for (j=0; j<chrFilterSize; j++)

  562.             {

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

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

  565.             }

  566. 

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

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

  569.         }

  570. }

  571. 

  572. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \

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

  574.         int j;\

  575.         int Y1 = 1<<18;\

  576.         int Y2 = 1<<18;\

  577.         int U  = 1<<18;\

  578.         int V  = 1<<18;\

  579.         int av_unused A1, A2;\

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

  581.         const int i2= 2*i;\

  582.         \

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

  584.         {\

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

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

  587.         }\

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

  589.         {\

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

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

  592.         }\

  593.         Y1>>=19;\

  594.         Y2>>=19;\

  595.         U >>=19;\

  596.         V >>=19;\

  597.         if (alpha){\

  598.             A1 = 1<<18;\

  599.             A2 = 1<<18;\

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

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

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

  603.             }\

  604.             A1>>=19;\

  605.             A2>>=19;\

  606.         }\

  607. 

  608. #define YSCALE_YUV_2_PACKEDX_C(type,alpha) \

  609.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\

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

  611.         {\

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

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

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

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

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

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

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

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

  620.         }\

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

  622.             A1=av_clip_uint8(A1);\

  623.             A2=av_clip_uint8(A2);\

  624.         }

  625. 

  626. #define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \

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

  628.         int j;\

  629.         int Y = 0;\

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

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

  632.         int av_unused A;\

  633.         int R,G,B;\

  634.         \

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

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

  637.         }\

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

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

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

  641.         }\

  642.         Y >>=10;\

  643.         U >>=10;\

  644.         V >>=10;\

  645.         if (alpha){\

  646.             A = rnd;\

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

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

  649.             A >>=19;\

  650.             if (A&256)\

  651.                 A = av_clip_uint8(A);\

  652.         }\

  653. 

  654. #define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \

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

  656.         Y-= c->yuv2rgb_y_offset;\

  657.         Y*= c->yuv2rgb_y_coeff;\

  658.         Y+= rnd;\

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

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

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

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

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

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

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

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

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

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

  669.         }\

  670. 

  671. 

  672. #define YSCALE_YUV_2_GRAY16_C \

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

  674.         int j;\

  675.         int Y1 = 1<<18;\

  676.         int Y2 = 1<<18;\

  677.         int U  = 1<<18;\

  678.         int V  = 1<<18;\

  679.         \

  680.         const int i2= 2*i;\

  681.         \

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

  683.         {\

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

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

  686.         }\

  687.         Y1>>=11;\

  688.         Y2>>=11;\

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

  690.         {\

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

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

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

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

  695.         }

  696. 

  697. #define YSCALE_YUV_2_RGBX_C(type,alpha) \

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

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

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

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

  702. 

  703. #define YSCALE_YUV_2_PACKED2_C(type,alpha)   \

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

  705.         const int i2= 2*i;       \

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

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

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

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

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

  711.         int av_unused A1, A2;                                         \

  712.         if (alpha){\

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

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

  715.         }\

  716. 

  717. #define YSCALE_YUV_2_GRAY16_2_C   \

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

  719.         const int i2= 2*i;       \

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

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

  722. 

  723. #define YSCALE_YUV_2_RGB2_C(type,alpha) \

  724.     YSCALE_YUV_2_PACKED2_C(type,alpha)\

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

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

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

  728. 

  729. #define YSCALE_YUV_2_PACKED1_C(type,alpha) \

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

  731.         const int i2= 2*i;\

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

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

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

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

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

  737.         int av_unused A1, A2;\

  738.         if (alpha){\

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

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

  741.         }\

  742. 

  743. #define YSCALE_YUV_2_GRAY16_1_C \

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

  745.         const int i2= 2*i;\

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

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

  748. 

  749. #define YSCALE_YUV_2_RGB1_C(type,alpha) \

  750.     YSCALE_YUV_2_PACKED1_C(type,alpha)\

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

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

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

  754. 

  755. #define YSCALE_YUV_2_PACKED1B_C(type,alpha) \

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

  757.         const int i2= 2*i;\

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

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

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

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

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

  763.         int av_unused A1, A2;\

  764.         if (alpha){\

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

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

  767.         }\

  768. 

  769. #define YSCALE_YUV_2_RGB1B_C(type,alpha) \

  770.     YSCALE_YUV_2_PACKED1B_C(type,alpha)\

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

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

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

  774. 

  775. #define YSCALE_YUV_2_MONO2_C \

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

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

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

  779.         int acc;\

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

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

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

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

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

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

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

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

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

  789.         dest++;\

  790.     }\

  791. 

  792. 

  793. #define YSCALE_YUV_2_MONOX_C \

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

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

  796.     int acc=0;\

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

  798.         int j;\

  799.         int Y1=1<<18;\

  800.         int Y2=1<<18;\

  801. \

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

  803.         {\

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

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

  806.         }\

  807.         Y1>>=19;\

  808.         Y2>>=19;\

  809.         if ((Y1|Y2)&256)\

  810.         {\

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

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

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

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

  815.         }\

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

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

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

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

  820.             dest++;\

  821.         }\

  822.     }

  823. 

  824. 

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

  826.     switch(c->dstFormat)\

  827.     {\

  828.     case PIX_FMT_RGB48BE:\

  829.     case PIX_FMT_RGB48LE:\

  830.         func(uint8_t,0)\

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

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

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

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

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

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

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

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

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

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

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

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

  843.             dest+=12;\

  844.         }\

  845.         break;\

  846.     case PIX_FMT_RGBA:\

  847.     case PIX_FMT_BGRA:\

  848.         if (CONFIG_SMALL){\

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

  850.             func(uint32_t,needAlpha)\

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

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

  853.             }\

  854.         }else{\

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

  856.                 func(uint32_t,1)\

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

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

  859.                 }\

  860.             }else{\

  861.                 func(uint32_t,0)\

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

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

  864.                 }\

  865.             }\

  866.         }\

  867.         break;\

  868.     case PIX_FMT_ARGB:\

  869.     case PIX_FMT_ABGR:\

  870.         if (CONFIG_SMALL){\

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

  872.             func(uint32_t,needAlpha)\

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

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

  875.             }\

  876.         }else{\

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

  878.                 func(uint32_t,1)\

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

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

  881.                 }\

  882.             }else{\

  883.                 func(uint32_t,0)\

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

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

  886.                 }\

  887.             }\

  888.         }                \

  889.         break;\

  890.     case PIX_FMT_RGB24:\

  891.         func(uint8_t,0)\

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

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

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

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

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

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

  898.             dest+=6;\

  899.         }\

  900.         break;\

  901.     case PIX_FMT_BGR24:\

  902.         func(uint8_t,0)\

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

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

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

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

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

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

  909.             dest+=6;\

  910.         }\

  911.         break;\

  912.     case PIX_FMT_RGB565:\

  913.     case PIX_FMT_BGR565:\

  914.         {\

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

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

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

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

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

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

  921.             func(uint16_t,0)\

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

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

  924.             }\

  925.         }\

  926.         break;\

  927.     case PIX_FMT_RGB555:\

  928.     case PIX_FMT_BGR555:\

  929.         {\

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

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

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

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

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

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

  936.             func(uint16_t,0)\

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

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

  939.             }\

  940.         }\

  941.         break;\

  942.     case PIX_FMT_RGB8:\

  943.     case PIX_FMT_BGR8:\

  944.         {\

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

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

  947.             func(uint8_t,0)\

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

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

  950.             }\

  951.         }\

  952.         break;\

  953.     case PIX_FMT_RGB4:\

  954.     case PIX_FMT_BGR4:\

  955.         {\

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

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

  958.             func(uint8_t,0)\

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

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

  961.             }\

  962.         }\

  963.         break;\

  964.     case PIX_FMT_RGB4_BYTE:\

  965.     case PIX_FMT_BGR4_BYTE:\

  966.         {\

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

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

  969.             func(uint8_t,0)\

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

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

  972.             }\

  973.         }\

  974.         break;\

  975.     case PIX_FMT_MONOBLACK:\

  976.     case PIX_FMT_MONOWHITE:\

  977.         {\

  978.             func_monoblack\

  979.         }\

  980.         break;\

  981.     case PIX_FMT_YUYV422:\

  982.         func2\

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

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

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

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

  987.         }                \

  988.         break;\

  989.     case PIX_FMT_UYVY422:\

  990.         func2\

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

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

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

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

  995.         }                \

  996.         break;\

  997.     case PIX_FMT_GRAY16BE:\

  998.         func_g16\

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

  1000.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  1001.             ((uint8_t*)dest)[2*i2+2]= Y2>>8;\

  1002.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  1003.         }                \

  1004.         break;\

  1005.     case PIX_FMT_GRAY16LE:\

  1006.         func_g16\

  1007.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  1008.             ((uint8_t*)dest)[2*i2+1]= Y1>>8;\

  1009.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  1010.             ((uint8_t*)dest)[2*i2+3]= Y2>>8;\

  1011.         }                \

  1012.         break;\

  1013.     }\

  1014. 

  1015. 

  1016. static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  1017.                                   const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  1018.                                   const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  1019. {

  1020.     int i;

  1021.     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)

  1022. }

  1023. 

  1024. static inline void yuv2rgbXinC_full(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  1025.                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  1026.                                     const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  1027. {

  1028.     int i;

  1029.     int step= fmt_depth(c->dstFormat)/8;

  1030.     int aidx= 3;

  1031. 

  1032.     switch(c->dstFormat){

  1033.     case PIX_FMT_ARGB:

  1034.         dest++;

  1035.         aidx= 0;

  1036.     case PIX_FMT_RGB24:

  1037.         aidx--;

  1038.     case PIX_FMT_RGBA:

  1039.         if (CONFIG_SMALL){

  1040.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1041.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1042.                 dest[aidx]= needAlpha ? A : 255;

  1043.                 dest[0]= R>>22;

  1044.                 dest[1]= G>>22;

  1045.                 dest[2]= B>>22;

  1046.                 dest+= step;

  1047.             }

  1048.         }else{

  1049.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf){

  1050.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1051.                     dest[aidx]= A;

  1052.                     dest[0]= R>>22;

  1053.                     dest[1]= G>>22;

  1054.                     dest[2]= B>>22;

  1055.                     dest+= step;

  1056.                 }

  1057.             }else{

  1058.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1059.                     dest[aidx]= 255;

  1060.                     dest[0]= R>>22;

  1061.                     dest[1]= G>>22;

  1062.                     dest[2]= B>>22;

  1063.                     dest+= step;

  1064.                 }

  1065.             }

  1066.         }

  1067.         break;

  1068.     case PIX_FMT_ABGR:

  1069.         dest++;

  1070.         aidx= 0;

  1071.     case PIX_FMT_BGR24:

  1072.         aidx--;

  1073.     case PIX_FMT_BGRA:

  1074.         if (CONFIG_SMALL){

  1075.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1076.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1077.                 dest[aidx]= needAlpha ? A : 255;

  1078.                 dest[0]= B>>22;

  1079.                 dest[1]= G>>22;

  1080.                 dest[2]= R>>22;

  1081.                 dest+= step;

  1082.             }

  1083.         }else{

  1084.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf){

  1085.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1086.                     dest[aidx]= A;

  1087.                     dest[0]= B>>22;

  1088.                     dest[1]= G>>22;

  1089.                     dest[2]= R>>22;

  1090.                     dest+= step;

  1091.                 }

  1092.             }else{

  1093.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1094.                     dest[aidx]= 255;

  1095.                     dest[0]= B>>22;

  1096.                     dest[1]= G>>22;

  1097.                     dest[2]= R>>22;

  1098.                     dest+= step;

  1099.                 }

  1100.             }

  1101.         }

  1102.         break;

  1103.     default:

  1104.         assert(0);

  1105.     }

  1106. }

  1107. 

  1108. static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val){

  1109.     int i;

  1110.     uint8_t *ptr = plane + stride*y;

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

  1112.         memset(ptr, val, width);

  1113.         ptr += stride;

  1114.     }

  1115. }

  1116. 

  1117. static inline void rgb48ToY(uint8_t *dst, const uint8_t *src, int width)

  1118. {

  1119.     int i;

  1120.     for (i = 0; i < width; i++) {

  1121.         int r = src[i*6+0];

  1122.         int g = src[i*6+2];

  1123.         int b = src[i*6+4];

  1124. 

  1125.         dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1126.     }

  1127. }

  1128. 

  1129. static inline void rgb48ToUV(uint8_t *dstU, uint8_t *dstV,

  1130.                              uint8_t *src1, uint8_t *src2, int width)

  1131. {

  1132.     int i;

  1133.     assert(src1==src2);

  1134.     for (i = 0; i < width; i++) {

  1135.         int r = src1[6*i + 0];

  1136.         int g = src1[6*i + 2];

  1137.         int b = src1[6*i + 4];

  1138. 

  1139.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1140.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1141.     }

  1142. }

  1143. 

  1144. static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1145.                                   uint8_t *src1, uint8_t *src2, int width)

  1146. {

  1147.     int i;

  1148.     assert(src1==src2);

  1149.     for (i = 0; i < width; i++) {

  1150.         int r= src1[12*i + 0] + src1[12*i + 6];

  1151.         int g= src1[12*i + 2] + src1[12*i + 8];

  1152.         int b= src1[12*i + 4] + src1[12*i + 10];

  1153. 

  1154.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1155.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1156.     }

  1157. }

  1158. 

  1159. #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\

  1160. static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\

  1161. {\

  1162.     int i;\

  1163.     for (i=0; i<width; i++)\

  1164.     {\

  1165.         int b= (((const type*)src)[i]>>shb)&maskb;\

  1166.         int g= (((const type*)src)[i]>>shg)&maskg;\

  1167.         int r= (((const type*)src)[i]>>shr)&maskr;\

  1168. \

  1169.         dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\

  1170.     }\

  1171. }

  1172. 

  1173. BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1174. BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1175. BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)

  1176. BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)

  1177. BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)

  1178. BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)

  1179. 

  1180. static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused){

  1181.     int i;

  1182.     for (i=0; i<width; i++){

  1183.         dst[i]= src[4*i];

  1184.     }

  1185. }

  1186. 

  1187. #define BGR2UV(type, name, shr, shg, shb, maska, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S)\

  1188. static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1189. {\

  1190.     int i;\

  1191.     for (i=0; i<width; i++)\

  1192.     {\

  1193.         int b= (((const type*)src)[i]&maskb)>>shb;\

  1194.         int g= (((const type*)src)[i]&maskg)>>shg;\

  1195.         int r= (((const type*)src)[i]&maskr)>>shr;\

  1196. \

  1197.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\

  1198.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\

  1199.     }\

  1200. }\

  1201. static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1202. {\

  1203.     int i;\

  1204.     for (i=0; i<width; i++)\

  1205.     {\

  1206.         int pix0= ((const type*)src)[2*i+0];\

  1207.         int pix1= ((const type*)src)[2*i+1];\

  1208.         int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\

  1209.         int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\

  1210.         int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\

  1211.         g&= maskg|(2*maskg);\

  1212. \

  1213.         g>>=shg;\

  1214. \

  1215.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\

  1216.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\

  1217.     }\

  1218. }

  1219. 

  1220. BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0xFF000000, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1221. BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0xFF000000,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1222. BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0,          0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)

  1223. BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0,          0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)

  1224. BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0,          0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)

  1225. BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0,          0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)

  1226. 

  1227. static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)

  1228. {

  1229.     int i;

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

  1231.     {

  1232.         int d= src[i];

  1233. 

  1234.         dst[i]= pal[d] & 0xFF;

  1235.     }

  1236. }

  1237. 

  1238. static inline void palToUV(uint8_t *dstU, uint8_t *dstV,

  1239.                            const uint8_t *src1, const uint8_t *src2,

  1240.                            long width, uint32_t *pal)

  1241. {

  1242.     int i;

  1243.     assert(src1 == src2);

  1244.     for (i=0; i<width; i++)

  1245.     {

  1246.         int p= pal[src1[i]];

  1247. 

  1248.         dstU[i]= p>>8;

  1249.         dstV[i]= p>>16;

  1250.     }

  1251. }

  1252. 

  1253. static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1254. {

  1255.     int i, j;

  1256.     for (i=0; i<width/8; i++){

  1257.         int d= ~src[i];

  1258.         for(j=0; j<8; j++)

  1259.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1260.     }

  1261. }

  1262. 

  1263. static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1264. {

  1265.     int i, j;

  1266.     for (i=0; i<width/8; i++){

  1267.         int d= src[i];

  1268.         for(j=0; j<8; j++)

  1269.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1270.     }

  1271. }

  1272. 

  1273. 

  1274. //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one

  1275. //Plain C versions

  1276. #if ((!HAVE_MMX || !CONFIG_GPL) && !HAVE_ALTIVEC) || CONFIG_RUNTIME_CPUDETECT

  1277. #define COMPILE_C

  1278. #endif

  1279. 

  1280. #if ARCH_PPC

  1281. #if HAVE_ALTIVEC || CONFIG_RUNTIME_CPUDETECT

  1282. #define COMPILE_ALTIVEC

  1283. #endif

  1284. #endif //ARCH_PPC

  1285. 

  1286. #if ARCH_X86

  1287. 

  1288. #if ((HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1289. #define COMPILE_MMX

  1290. #endif

  1291. 

  1292. #if (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1293. #define COMPILE_MMX2

  1294. #endif

  1295. 

  1296. #if ((HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1297. #define COMPILE_3DNOW

  1298. #endif

  1299. #endif //ARCH_X86

  1300. 

  1301. #define COMPILE_TEMPLATE_MMX 0

  1302. #define COMPILE_TEMPLATE_MMX2 0

  1303. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1304. #define COMPILE_TEMPLATE_ALTIVEC 0

  1305. 

  1306. #ifdef COMPILE_C

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

  1308. #include "swscale_template.c"

  1309. #endif

  1310. 

  1311. #ifdef COMPILE_ALTIVEC

  1312. #undef RENAME

  1313. #undef COMPILE_TEMPLATE_ALTIVEC

  1314. #define COMPILE_TEMPLATE_ALTIVEC 1

  1315. #define RENAME(a) a ## _altivec

  1316. #include "swscale_template.c"

  1317. #endif

  1318. 

  1319. #if ARCH_X86

  1320. 

  1321. //MMX versions

  1322. #ifdef COMPILE_MMX

  1323. #undef RENAME

  1324. #undef COMPILE_TEMPLATE_MMX

  1325. #undef COMPILE_TEMPLATE_MMX2

  1326. #undef COMPILE_TEMPLATE_AMD3DNOW

  1327. #define COMPILE_TEMPLATE_MMX 1

  1328. #define COMPILE_TEMPLATE_MMX2 0

  1329. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1330. #define RENAME(a) a ## _MMX

  1331. #include "swscale_template.c"

  1332. #endif

  1333. 

  1334. //MMX2 versions

  1335. #ifdef COMPILE_MMX2

  1336. #undef RENAME

  1337. #undef COMPILE_TEMPLATE_MMX

  1338. #undef COMPILE_TEMPLATE_MMX2

  1339. #undef COMPILE_TEMPLATE_AMD3DNOW

  1340. #define COMPILE_TEMPLATE_MMX 1

  1341. #define COMPILE_TEMPLATE_MMX2 1

  1342. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1343. #define RENAME(a) a ## _MMX2

  1344. #include "swscale_template.c"

  1345. #endif

  1346. 

  1347. //3DNOW versions

  1348. #ifdef COMPILE_3DNOW

  1349. #undef RENAME

  1350. #undef COMPILE_TEMPLATE_MMX

  1351. #undef COMPILE_TEMPLATE_MMX2

  1352. #undef COMPILE_TEMPLATE_AMD3DNOW

  1353. #define COMPILE_TEMPLATE_MMX 1

  1354. #define COMPILE_TEMPLATE_MMX2 0

  1355. #define COMPILE_TEMPLATE_AMD3DNOW 1

  1356. #define RENAME(a) a ## _3DNow

  1357. #include "swscale_template.c"

  1358. #endif

  1359. 

  1360. #endif //ARCH_X86

  1361. 

  1362. static double getSplineCoeff(double a, double b, double c, double d, double dist)

  1363. {

  1364. //    printf("%f %f %f %f %f\n", a,b,c,d,dist);

  1365.     if (dist<=1.0)      return ((d*dist + c)*dist + b)*dist +a;

  1366.     else                return getSplineCoeff(        0.0,

  1367.                                              b+ 2.0*c + 3.0*d,

  1368.                                                     c + 3.0*d,

  1369.                                             -b- 3.0*c - 6.0*d,

  1370.                                             dist-1.0);

  1371. }

  1372. 

  1373. static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,

  1374.                              int srcW, int dstW, int filterAlign, int one, int flags,

  1375.                              SwsVector *srcFilter, SwsVector *dstFilter, double param[2])

  1376. {

  1377.     int i;

  1378.     int filterSize;

  1379.     int filter2Size;

  1380.     int minFilterSize;

  1381.     int64_t *filter=NULL;

  1382.     int64_t *filter2=NULL;

  1383.     const int64_t fone= 1LL<<54;

  1384.     int ret= -1;

  1385. #if ARCH_X86

  1386.     if (flags & SWS_CPU_CAPS_MMX)

  1387.         __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)

  1388. #endif

  1389. 

  1390.     // NOTE: the +1 is for the MMX scaler which reads over the end

  1391.     *filterPos = av_malloc((dstW+1)*sizeof(int16_t));

  1392. 

  1393.     if (FFABS(xInc - 0x10000) <10) // unscaled

  1394.     {

  1395.         int i;

  1396.         filterSize= 1;

  1397.         filter= av_mallocz(dstW*sizeof(*filter)*filterSize);

  1398. 

  1399.         for (i=0; i<dstW; i++)

  1400.         {

  1401.             filter[i*filterSize]= fone;

  1402.             (*filterPos)[i]=i;

  1403.         }

  1404. 

  1405.     }

  1406.     else if (flags&SWS_POINT) // lame looking point sampling mode

  1407.     {

  1408.         int i;

  1409.         int xDstInSrc;

  1410.         filterSize= 1;

  1411.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1412. 

  1413.         xDstInSrc= xInc/2 - 0x8000;

  1414.         for (i=0; i<dstW; i++)

  1415.         {

  1416.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1417. 

  1418.             (*filterPos)[i]= xx;

  1419.             filter[i]= fone;

  1420.             xDstInSrc+= xInc;

  1421.         }

  1422.     }

  1423.     else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale

  1424.     {

  1425.         int i;

  1426.         int xDstInSrc;

  1427.         filterSize= 2;

  1428.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1429. 

  1430.         xDstInSrc= xInc/2 - 0x8000;

  1431.         for (i=0; i<dstW; i++)

  1432.         {

  1433.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1434.             int j;

  1435. 

  1436.             (*filterPos)[i]= xx;

  1437.                 //bilinear upscale / linear interpolate / area averaging

  1438.                 for (j=0; j<filterSize; j++)

  1439.                 {

  1440.                     int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);

  1441.                     if (coeff<0) coeff=0;

  1442.                     filter[i*filterSize + j]= coeff;

  1443.                     xx++;

  1444.                 }

  1445.             xDstInSrc+= xInc;

  1446.         }

  1447.     }

  1448.     else

  1449.     {

  1450.         int xDstInSrc;

  1451.         int sizeFactor;

  1452. 

  1453.         if      (flags&SWS_BICUBIC)      sizeFactor=  4;

  1454.         else if (flags&SWS_X)            sizeFactor=  8;

  1455.         else if (flags&SWS_AREA)         sizeFactor=  1; //downscale only, for upscale it is bilinear

  1456.         else if (flags&SWS_GAUSS)        sizeFactor=  8;   // infinite ;)

  1457.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;

  1458.         else if (flags&SWS_SINC)         sizeFactor= 20; // infinite ;)

  1459.         else if (flags&SWS_SPLINE)       sizeFactor= 20;  // infinite ;)

  1460.         else if (flags&SWS_BILINEAR)     sizeFactor=  2;

  1461.         else {

  1462.             sizeFactor= 0; //GCC warning killer

  1463.             assert(0);

  1464.         }

  1465. 

  1466.         if (xInc <= 1<<16)      filterSize= 1 + sizeFactor; // upscale

  1467.         else                    filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;

  1468. 

  1469.         if (filterSize > srcW-2) filterSize=srcW-2;

  1470. 

  1471.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1472. 

  1473.         xDstInSrc= xInc - 0x10000;

  1474.         for (i=0; i<dstW; i++)

  1475.         {

  1476.             int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);

  1477.             int j;

  1478.             (*filterPos)[i]= xx;

  1479.             for (j=0; j<filterSize; j++)

  1480.             {

  1481.                 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;

  1482.                 double floatd;

  1483.                 int64_t coeff;

  1484. 

  1485.                 if (xInc > 1<<16)

  1486.                     d= d*dstW/srcW;

  1487.                 floatd= d * (1.0/(1<<30));

  1488. 

  1489.                 if (flags & SWS_BICUBIC)

  1490.                 {

  1491.                     int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] :   0) * (1<<24);

  1492.                     int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);

  1493.                     int64_t dd = ( d*d)>>30;

  1494.                     int64_t ddd= (dd*d)>>30;

  1495. 

  1496.                     if      (d < 1LL<<30)

  1497.                         coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);

  1498.                     else if (d < 1LL<<31)

  1499.                         coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);

  1500.                     else

  1501.                         coeff=0.0;

  1502.                     coeff *= fone>>(30+24);

  1503.                 }

  1504. /*                else if (flags & SWS_X)

  1505.                 {

  1506.                     double p= param ? param*0.01 : 0.3;

  1507.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1508.                     coeff*= pow(2.0, - p*d*d);

  1509.                 }*/

  1510.                 else if (flags & SWS_X)

  1511.                 {

  1512.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1513.                     double c;

  1514. 

  1515.                     if (floatd<1.0)

  1516.                         c = cos(floatd*PI);

  1517.                     else

  1518.                         c=-1.0;

  1519.                     if (c<0.0)      c= -pow(-c, A);

  1520.                     else            c=  pow( c, A);

  1521.                     coeff= (c*0.5 + 0.5)*fone;

  1522.                 }

  1523.                 else if (flags & SWS_AREA)

  1524.                 {

  1525.                     int64_t d2= d - (1<<29);

  1526.                     if      (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));

  1527.                     else if (d2*xInc <  (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));

  1528.                     else coeff=0.0;

  1529.                     coeff *= fone>>(30+16);

  1530.                 }

  1531.                 else if (flags & SWS_GAUSS)

  1532.                 {

  1533.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1534.                     coeff = (pow(2.0, - p*floatd*floatd))*fone;

  1535.                 }

  1536.                 else if (flags & SWS_SINC)

  1537.                 {

  1538.                     coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;

  1539.                 }

  1540.                 else if (flags & SWS_LANCZOS)

  1541.                 {

  1542.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1543.                     coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;

  1544.                     if (floatd>p) coeff=0;

  1545.                 }

  1546.                 else if (flags & SWS_BILINEAR)

  1547.                 {

  1548.                     coeff= (1<<30) - d;

  1549.                     if (coeff<0) coeff=0;

  1550.                     coeff *= fone >> 30;

  1551.                 }

  1552.                 else if (flags & SWS_SPLINE)

  1553.                 {

  1554.                     double p=-2.196152422706632;

  1555.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;

  1556.                 }

  1557.                 else {

  1558.                     coeff= 0.0; //GCC warning killer

  1559.                     assert(0);

  1560.                 }

  1561. 

  1562.                 filter[i*filterSize + j]= coeff;

  1563.                 xx++;

  1564.             }

  1565.             xDstInSrc+= 2*xInc;

  1566.         }

  1567.     }

  1568. 

  1569.     /* apply src & dst Filter to filter -> filter2

  1570.        av_free(filter);

  1571.     */

  1572.     assert(filterSize>0);

  1573.     filter2Size= filterSize;

  1574.     if (srcFilter) filter2Size+= srcFilter->length - 1;

  1575.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1576.     assert(filter2Size>0);

  1577.     filter2= av_mallocz(filter2Size*dstW*sizeof(*filter2));

  1578. 

  1579.     for (i=0; i<dstW; i++)

  1580.     {

  1581.         int j, k;

  1582. 

  1583.         if(srcFilter){

  1584.             for (k=0; k<srcFilter->length; k++){

  1585.                 for (j=0; j<filterSize; j++)

  1586.                     filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];

  1587.             }

  1588.         }else{

  1589.             for (j=0; j<filterSize; j++)

  1590.                 filter2[i*filter2Size + j]= filter[i*filterSize + j];

  1591.         }

  1592.         //FIXME dstFilter

  1593. 

  1594.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1595.     }

  1596.     av_freep(&filter);

  1597. 

  1598.     /* try to reduce the filter-size (step1 find size and shift left) */

  1599.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1600.     minFilterSize= 0;

  1601.     for (i=dstW-1; i>=0; i--)

  1602.     {

  1603.         int min= filter2Size;

  1604.         int j;

  1605.         int64_t cutOff=0.0;

  1606. 

  1607.         /* get rid off near zero elements on the left by shifting left */

  1608.         for (j=0; j<filter2Size; j++)

  1609.         {

  1610.             int k;

  1611.             cutOff += FFABS(filter2[i*filter2Size]);

  1612. 

  1613.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1614. 

  1615.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1616.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1617. 

  1618.             // move filter coefficients left

  1619.             for (k=1; k<filter2Size; k++)

  1620.                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1621.             filter2[i*filter2Size + k - 1]= 0;

  1622.             (*filterPos)[i]++;

  1623.         }

  1624. 

  1625.         cutOff=0;

  1626.         /* count near zeros on the right */

  1627.         for (j=filter2Size-1; j>0; j--)

  1628.         {

  1629.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1630. 

  1631.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1632.             min--;

  1633.         }

  1634. 

  1635.         if (min>minFilterSize) minFilterSize= min;

  1636.     }

  1637. 

  1638.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1639.         // we can handle the special case 4,

  1640.         // so we don't want to go to the full 8

  1641.         if (minFilterSize < 5)

  1642.             filterAlign = 4;

  1643. 

  1644.         // We really don't want to waste our time

  1645.         // doing useless computation, so fall back on

  1646.         // the scalar C code for very small filters.

  1647.         // Vectorizing is worth it only if you have a

  1648.         // decent-sized vector.

  1649.         if (minFilterSize < 3)

  1650.             filterAlign = 1;

  1651.     }

  1652. 

  1653.     if (flags & SWS_CPU_CAPS_MMX) {

  1654.         // special case for unscaled vertical filtering

  1655.         if (minFilterSize == 1 && filterAlign == 2)

  1656.             filterAlign= 1;

  1657.     }

  1658. 

  1659.     assert(minFilterSize > 0);

  1660.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1661.     assert(filterSize > 0);

  1662.     filter= av_malloc(filterSize*dstW*sizeof(*filter));

  1663.     if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)

  1664.         goto error;

  1665.     *outFilterSize= filterSize;

  1666. 

  1667.     if (flags&SWS_PRINT_INFO)

  1668.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1669.     /* try to reduce the filter-size (step2 reduce it) */

  1670.     for (i=0; i<dstW; i++)

  1671.     {

  1672.         int j;

  1673. 

  1674.         for (j=0; j<filterSize; j++)

  1675.         {

  1676.             if (j>=filter2Size) filter[i*filterSize + j]= 0;

  1677.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1678.             if((flags & SWS_BITEXACT) && j>=minFilterSize)

  1679.                 filter[i*filterSize + j]= 0;

  1680.         }

  1681.     }

  1682. 

  1683. 

  1684.     //FIXME try to align filterPos if possible

  1685. 

  1686.     //fix borders

  1687.     for (i=0; i<dstW; i++)

  1688.     {

  1689.         int j;

  1690.         if ((*filterPos)[i] < 0)

  1691.         {

  1692.             // move filter coefficients left to compensate for filterPos

  1693.             for (j=1; j<filterSize; j++)

  1694.             {

  1695.                 int left= FFMAX(j + (*filterPos)[i], 0);

  1696.                 filter[i*filterSize + left] += filter[i*filterSize + j];

  1697.                 filter[i*filterSize + j]=0;

  1698.             }

  1699.             (*filterPos)[i]= 0;

  1700.         }

  1701. 

  1702.         if ((*filterPos)[i] + filterSize > srcW)

  1703.         {

  1704.             int shift= (*filterPos)[i] + filterSize - srcW;

  1705.             // move filter coefficients right to compensate for filterPos

  1706.             for (j=filterSize-2; j>=0; j--)

  1707.             {

  1708.                 int right= FFMIN(j + shift, filterSize-1);

  1709.                 filter[i*filterSize +right] += filter[i*filterSize +j];

  1710.                 filter[i*filterSize +j]=0;

  1711.             }

  1712.             (*filterPos)[i]= srcW - filterSize;

  1713.         }

  1714.     }

  1715. 

  1716.     // Note the +1 is for the MMX scaler which reads over the end

  1717.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1718.     *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));

  1719. 

  1720.     /* normalize & store in outFilter */

  1721.     for (i=0; i<dstW; i++)

  1722.     {

  1723.         int j;

  1724.         int64_t error=0;

  1725.         int64_t sum=0;

  1726. 

  1727.         for (j=0; j<filterSize; j++)

  1728.         {

  1729.             sum+= filter[i*filterSize + j];

  1730.         }

  1731.         sum= (sum + one/2)/ one;

  1732.         for (j=0; j<*outFilterSize; j++)

  1733.         {

  1734.             int64_t v= filter[i*filterSize + j] + error;

  1735.             int intV= ROUNDED_DIV(v, sum);

  1736.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1737.             error= v - intV*sum;

  1738.         }

  1739.     }

  1740. 

  1741.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1742.     for (i=0; i<*outFilterSize; i++)

  1743.     {

  1744.         int j= dstW*(*outFilterSize);

  1745.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1746.     }

  1747. 

  1748.     ret=0;

  1749. error:

  1750.     av_free(filter);

  1751.     av_free(filter2);

  1752.     return ret;

  1753. }

  1754. 

  1755. #ifdef COMPILE_MMX2

  1756. static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1757. {

  1758.     uint8_t *fragmentA;

  1759.     x86_reg imm8OfPShufW1A;

  1760.     x86_reg imm8OfPShufW2A;

  1761.     x86_reg fragmentLengthA;

  1762.     uint8_t *fragmentB;

  1763.     x86_reg imm8OfPShufW1B;

  1764.     x86_reg imm8OfPShufW2B;

  1765.     x86_reg fragmentLengthB;

  1766.     int fragmentPos;

  1767. 

  1768.     int xpos, i;

  1769. 

  1770.     // create an optimized horizontal scaling routine

  1771. 

  1772.     //code fragment

  1773. 

  1774.     __asm__ volatile(

  1775.         "jmp                         9f                 \n\t"

  1776.     // Begin

  1777.         "0:                                             \n\t"

  1778.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1779.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1780.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1781.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1782.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1783.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1784.         "1:                                             \n\t"

  1785.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1786.         "2:                                             \n\t"

  1787.         "psubw                    %%mm1, %%mm0          \n\t"

  1788.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1789.         "pmullw                   %%mm3, %%mm0          \n\t"

  1790.         "psllw                       $7, %%mm1          \n\t"

  1791.         "paddw                    %%mm1, %%mm0          \n\t"

  1792. 

  1793.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1794. 

  1795.         "add                         $8, %%"REG_a"      \n\t"

  1796.     // End

  1797.         "9:                                             \n\t"

  1798. //        "int $3                                         \n\t"

  1799.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1800.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1801.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1802.         "dec                         %1                 \n\t"

  1803.         "dec                         %2                 \n\t"

  1804.         "sub                         %0, %1             \n\t"

  1805.         "sub                         %0, %2             \n\t"

  1806.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1807.         "sub                         %0, %3             \n\t"

  1808. 

  1809. 

  1810.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1811.         "=r" (fragmentLengthA)

  1812.     );

  1813. 

  1814.     __asm__ volatile(

  1815.         "jmp                         9f                 \n\t"

  1816.     // Begin

  1817.         "0:                                             \n\t"

  1818.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1819.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1820.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1821.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1822.         "1:                                             \n\t"

  1823.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1824.         "2:                                             \n\t"

  1825.         "psubw                    %%mm1, %%mm0          \n\t"

  1826.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1827.         "pmullw                   %%mm3, %%mm0          \n\t"

  1828.         "psllw                       $7, %%mm1          \n\t"

  1829.         "paddw                    %%mm1, %%mm0          \n\t"

  1830. 

  1831.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1832. 

  1833.         "add                         $8, %%"REG_a"      \n\t"

  1834.     // End

  1835.         "9:                                             \n\t"

  1836. //        "int                       $3                   \n\t"

  1837.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1838.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1839.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1840.         "dec                         %1                 \n\t"

  1841.         "dec                         %2                 \n\t"

  1842.         "sub                         %0, %1             \n\t"

  1843.         "sub                         %0, %2             \n\t"

  1844.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1845.         "sub                         %0, %3             \n\t"

  1846. 

  1847. 

  1848.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1849.         "=r" (fragmentLengthB)

  1850.     );

  1851. 

  1852.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1853.     fragmentPos=0;

  1854. 

  1855.     for (i=0; i<dstW/numSplits; i++)

  1856.     {

  1857.         int xx=xpos>>16;

  1858. 

  1859.         if ((i&3) == 0)

  1860.         {

  1861.             int a=0;

  1862.             int b=((xpos+xInc)>>16) - xx;

  1863.             int c=((xpos+xInc*2)>>16) - xx;

  1864.             int d=((xpos+xInc*3)>>16) - xx;

  1865.             int inc                = (d+1<4);

  1866.             uint8_t *fragment      = (d+1<4) ? fragmentB       : fragmentA;

  1867.             x86_reg imm8OfPShufW1  = (d+1<4) ? imm8OfPShufW1B  : imm8OfPShufW1A;

  1868.             x86_reg imm8OfPShufW2  = (d+1<4) ? imm8OfPShufW2B  : imm8OfPShufW2A;

  1869.             x86_reg fragmentLength = (d+1<4) ? fragmentLengthB : fragmentLengthA;

  1870.             int maxShift= 3-(d+inc);

  1871.             int shift=0;

  1872. 

  1873.             filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;

  1874.             filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1875.             filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1876.             filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1877.             filterPos[i/2]= xx;

  1878. 

  1879.             memcpy(funnyCode + fragmentPos, fragment, fragmentLength);

  1880. 

  1881.             funnyCode[fragmentPos + imm8OfPShufW1]=

  1882.                 (a+inc) | ((b+inc)<<2) | ((c+inc)<<4) | ((d+inc)<<6);

  1883.             funnyCode[fragmentPos + imm8OfPShufW2]=

  1884.                 a | (b<<2) | (c<<4) | (d<<6);

  1885. 

  1886.             if (i+4-inc>=dstW) shift=maxShift; //avoid overread

  1887.             else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1888. 

  1889.             if (shift && i>=shift)

  1890.             {

  1891.                 funnyCode[fragmentPos + imm8OfPShufW1]+= 0x55*shift;

  1892.                 funnyCode[fragmentPos + imm8OfPShufW2]+= 0x55*shift;

  1893.                 filterPos[i/2]-=shift;

  1894.             }

  1895. 

  1896.             fragmentPos+= fragmentLength;

  1897. 

  1898.             funnyCode[fragmentPos]= RET;

  1899.         }

  1900.         xpos+=xInc;

  1901.     }

  1902.     filterPos[((i/2)+1)&(~1)]= xpos>>16; // needed to jump to the next part

  1903. }

  1904. #endif /* COMPILE_MMX2 */

  1905. 

  1906. static void globalInit(void){

  1907.     // generating tables:

  1908.     int i;

  1909.     for (i=0; i<768; i++){

  1910.         int c= av_clip_uint8(i-256);

  1911.         clip_table[i]=c;

  1912.     }

  1913. }

  1914. 

  1915. static SwsFunc getSwsFunc(SwsContext *c)

  1916. {

  1917. #if CONFIG_RUNTIME_CPUDETECT

  1918.     int flags = c->flags;

  1919. 

  1920. #if ARCH_X86 && CONFIG_GPL

  1921.     // ordered per speed fastest first

  1922.     if (flags & SWS_CPU_CAPS_MMX2) {

  1923.         sws_init_swScale_MMX2(c);

  1924.         return swScale_MMX2;

  1925.     } else if (flags & SWS_CPU_CAPS_3DNOW) {

  1926.         sws_init_swScale_3DNow(c);

  1927.         return swScale_3DNow;

  1928.     } else if (flags & SWS_CPU_CAPS_MMX) {

  1929.         sws_init_swScale_MMX(c);

  1930.         return swScale_MMX;

  1931.     } else {

  1932.         sws_init_swScale_C(c);

  1933.         return swScale_C;

  1934.     }

  1935. 

  1936. #else

  1937. #if ARCH_PPC

  1938.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1939.         sws_init_swScale_altivec(c);

  1940.         return swScale_altivec;

  1941.     } else {

  1942.         sws_init_swScale_C(c);

  1943.         return swScale_C;

  1944.     }

  1945. #endif

  1946.     sws_init_swScale_C(c);

  1947.     return swScale_C;

  1948. #endif /* ARCH_X86 && CONFIG_GPL */

  1949. #else //CONFIG_RUNTIME_CPUDETECT

  1950. #if   COMPILE_TEMPLATE_MMX2

  1951.     sws_init_swScale_MMX2(c);

  1952.     return swScale_MMX2;

  1953. #elif COMPILE_TEMPLATE_AMD3DNOW

  1954.     sws_init_swScale_3DNow(c);

  1955.     return swScale_3DNow;

  1956. #elif COMPILE_TEMPLATE_MMX

  1957.     sws_init_swScale_MMX(c);

  1958.     return swScale_MMX;

  1959. #elif COMPILE_TEMPLATE_ALTIVEC

  1960.     sws_init_swScale_altivec(c);

  1961.     return swScale_altivec;

  1962. #else

  1963.     sws_init_swScale_C(c);

  1964.     return swScale_C;

  1965. #endif

  1966. #endif //!CONFIG_RUNTIME_CPUDETECT

  1967. }

  1968. 

  1969. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1970.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1971.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1972.     /* Copy Y plane */

  1973.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1974.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1975.     else

  1976.     {

  1977.         int i;

  1978.         const uint8_t *srcPtr= src[0];

  1979.         uint8_t *dstPtr= dst;

  1980.         for (i=0; i<srcSliceH; i++)

  1981.         {

  1982.             memcpy(dstPtr, srcPtr, c->srcW);

  1983.             srcPtr+= srcStride[0];

  1984.             dstPtr+= dstStride[0];

  1985.         }

  1986.     }

  1987.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1988.     if (c->dstFormat == PIX_FMT_NV12)

  1989.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  1990.     else

  1991.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  1992. 

  1993.     return srcSliceH;

  1994. }

  1995. 

  1996. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1997.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1998.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1999. 

  2000.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  2001. 

  2002.     return srcSliceH;

  2003. }

  2004. 

  2005. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2006.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2007.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2008. 

  2009.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  2010. 

  2011.     return srcSliceH;

  2012. }

  2013. 

  2014. static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2015.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2016.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2017. 

  2018.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  2019. 

  2020.     return srcSliceH;

  2021. }

  2022. 

  2023. static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2024.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2025.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2026. 

  2027.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  2028. 

  2029.     return srcSliceH;

  2030. }

  2031. 

  2032. static int YUYV2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2033.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2034.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2035.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  2036.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  2037. 

  2038.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2039. 

  2040.     if (dstParam[3])

  2041.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2042. 

  2043.     return srcSliceH;

  2044. }

  2045. 

  2046. static int YUYV2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2047.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2048.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2049.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  2050.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  2051. 

  2052.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2053. 

  2054.     return srcSliceH;

  2055. }

  2056. 

  2057. static int UYVY2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2058.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2059.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2060.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  2061.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  2062. 

  2063.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2064. 

  2065.     if (dstParam[3])

  2066.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2067. 

  2068.     return srcSliceH;

  2069. }

  2070. 

  2071. static int UYVY2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2072.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2073.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2074.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  2075.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  2076. 

  2077.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2078. 

  2079.     return srcSliceH;

  2080. }

  2081. 

  2082. static int pal2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2083.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  2084.     const enum PixelFormat srcFormat= c->srcFormat;

  2085.     const enum PixelFormat dstFormat= c->dstFormat;

  2086.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  2087.                  const uint8_t *palette)=NULL;

  2088.     int i;

  2089.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2090.     uint8_t *srcPtr= src[0];

  2091. 

  2092.     if (!usePal(srcFormat))

  2093.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2094.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  2095. 

  2096.     switch(dstFormat){

  2097.     case PIX_FMT_RGB32  : conv = palette8topacked32; break;

  2098.     case PIX_FMT_BGR32  : conv = palette8topacked32; break;

  2099.     case PIX_FMT_BGR32_1: conv = palette8topacked32; break;

  2100.     case PIX_FMT_RGB32_1: conv = palette8topacked32; break;

  2101.     case PIX_FMT_RGB24  : conv = palette8topacked24; break;

  2102.     case PIX_FMT_BGR24  : conv = palette8topacked24; break;

  2103.     default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2104.                     sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2105.     }

  2106. 

  2107. 

  2108.     for (i=0; i<srcSliceH; i++) {

  2109.         conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  2110.         srcPtr+= srcStride[0];

  2111.         dstPtr+= dstStride[0];

  2112.     }

  2113. 

  2114.     return srcSliceH;

  2115. }

  2116. 

  2117. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  2118. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2119.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  2120.     const enum PixelFormat srcFormat= c->srcFormat;

  2121.     const enum PixelFormat dstFormat= c->dstFormat;

  2122.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  2123.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  2124.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  2125.     const int dstId= fmt_depth(dstFormat) >> 2;

  2126.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  2127. 

  2128.     /* BGR -> BGR */

  2129.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  2130.        || (isRGB(srcFormat) && isRGB(dstFormat))){

  2131.         switch(srcId | (dstId<<4)){

  2132.         case 0x34: conv= rgb16to15; break;

  2133.         case 0x36: conv= rgb24to15; break;

  2134.         case 0x38: conv= rgb32to15; break;

  2135.         case 0x43: conv= rgb15to16; break;

  2136.         case 0x46: conv= rgb24to16; break;

  2137.         case 0x48: conv= rgb32to16; break;

  2138.         case 0x63: conv= rgb15to24; break;

  2139.         case 0x64: conv= rgb16to24; break;

  2140.         case 0x68: conv= rgb32to24; break;

  2141.         case 0x83: conv= rgb15to32; break;

  2142.         case 0x84: conv= rgb16to32; break;

  2143.         case 0x86: conv= rgb24to32; break;

  2144.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2145.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2146.         }

  2147.     }else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  2148.              || (isRGB(srcFormat) && isBGR(dstFormat))){

  2149.         switch(srcId | (dstId<<4)){

  2150.         case 0x33: conv= rgb15tobgr15; break;

  2151.         case 0x34: conv= rgb16tobgr15; break;

  2152.         case 0x36: conv= rgb24tobgr15; break;

  2153.         case 0x38: conv= rgb32tobgr15; break;

  2154.         case 0x43: conv= rgb15tobgr16; break;

  2155.         case 0x44: conv= rgb16tobgr16; break;

  2156.         case 0x46: conv= rgb24tobgr16; break;

  2157.         case 0x48: conv= rgb32tobgr16; break;

  2158.         case 0x63: conv= rgb15tobgr24; break;

  2159.         case 0x64: conv= rgb16tobgr24; break;

  2160.         case 0x66: conv= rgb24tobgr24; break;

  2161.         case 0x68: conv= rgb32tobgr24; break;

  2162.         case 0x83: conv= rgb15tobgr32; break;

  2163.         case 0x84: conv= rgb16tobgr32; break;

  2164.         case 0x86: conv= rgb24tobgr32; break;

  2165.         case 0x88: conv= rgb32tobgr32; break;

  2166.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2167.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2168.         }

  2169.     }else{

  2170.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2171.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  2172.     }

  2173. 

  2174.     if(conv)

  2175.     {

  2176.         uint8_t *srcPtr= src[0];

  2177.         if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)

  2178.             srcPtr += ALT32_CORR;

  2179. 

  2180.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  2181.             conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  2182.         else

  2183.         {

  2184.             int i;

  2185.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2186. 

  2187.             for (i=0; i<srcSliceH; i++)

  2188.             {

  2189.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  2190.                 srcPtr+= srcStride[0];

  2191.                 dstPtr+= dstStride[0];

  2192.             }

  2193.         }

  2194.     }

  2195.     return srcSliceH;

  2196. }

  2197. 

  2198. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2199.                               int srcSliceH, uint8_t* dst[], int dstStride[]){

  2200. 

  2201.     rgb24toyv12(

  2202.         src[0],

  2203.         dst[0]+ srcSliceY    *dstStride[0],

  2204.         dst[1]+(srcSliceY>>1)*dstStride[1],

  2205.         dst[2]+(srcSliceY>>1)*dstStride[2],

  2206.         c->srcW, srcSliceH,

  2207.         dstStride[0], dstStride[1], srcStride[0]);

  2208.     if (dst[3])

  2209.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2210.     return srcSliceH;

  2211. }

  2212. 

  2213. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2214.                              int srcSliceH, uint8_t* dst[], int dstStride[]){

  2215.     int i;

  2216. 

  2217.     /* copy Y */

  2218.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  2219.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  2220.     else{

  2221.         uint8_t *srcPtr= src[0];

  2222.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2223. 

  2224.         for (i=0; i<srcSliceH; i++)

  2225.         {

  2226.             memcpy(dstPtr, srcPtr, c->srcW);

  2227.             srcPtr+= srcStride[0];

  2228.             dstPtr+= dstStride[0];

  2229.         }

  2230.     }

  2231. 

  2232.     if (c->dstFormat==PIX_FMT_YUV420P || c->dstFormat==PIX_FMT_YUVA420P){

  2233.         planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  2234.                  srcSliceH >> 2, srcStride[1], dstStride[1]);

  2235.         planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  2236.                  srcSliceH >> 2, srcStride[2], dstStride[2]);

  2237.     }else{

  2238.         planar2x(src[1], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  2239.                  srcSliceH >> 2, srcStride[1], dstStride[2]);

  2240.         planar2x(src[2], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  2241.                  srcSliceH >> 2, srcStride[2], dstStride[1]);

  2242.     }

  2243.     if (dst[3])

  2244.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2245.     return srcSliceH;

  2246. }

  2247. 

  2248. /* unscaled copy like stuff (assumes nearly identical formats) */

  2249. static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2250.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2251. {

  2252.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  2253.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  2254.     else

  2255.     {

  2256.         int i;

  2257.         uint8_t *srcPtr= src[0];

  2258.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2259.         int length=0;

  2260. 

  2261.         /* universal length finder */

  2262.         while(length+c->srcW <= FFABS(dstStride[0])

  2263.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  2264.         assert(length!=0);

  2265. 

  2266.         for (i=0; i<srcSliceH; i++)

  2267.         {

  2268.             memcpy(dstPtr, srcPtr, length);

  2269.             srcPtr+= srcStride[0];

  2270.             dstPtr+= dstStride[0];

  2271.         }

  2272.     }

  2273.     return srcSliceH;

  2274. }

  2275. 

  2276. static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2277.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2278. {

  2279.     int plane, i, j;

  2280.     for (plane=0; plane<4; plane++)

  2281.     {

  2282.         int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  2283.         int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  2284.         int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  2285.         uint8_t *srcPtr= src[plane];

  2286.         uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  2287. 

  2288.         if (!dst[plane]) continue;

  2289.         // ignore palette for GRAY8

  2290.         if (plane == 1 && !dst[2]) continue;

  2291.         if (!src[plane] || (plane == 1 && !src[2])){

  2292.             if(is16BPS(c->dstFormat))

  2293.                 length*=2;

  2294.             fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);

  2295.         }else

  2296.         {

  2297.             if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)){

  2298.                 if (!isBE(c->srcFormat)) srcPtr++;

  2299.                 for (i=0; i<height; i++){

  2300.                     for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  2301.                     srcPtr+= srcStride[plane];

  2302.                     dstPtr+= dstStride[plane];

  2303.                 }

  2304.             }else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)){

  2305.                 for (i=0; i<height; i++){

  2306.                     for (j=0; j<length; j++){

  2307.                         dstPtr[ j<<1   ] = srcPtr[j];

  2308.                         dstPtr[(j<<1)+1] = srcPtr[j];

  2309.                     }

  2310.                     srcPtr+= srcStride[plane];

  2311.                     dstPtr+= dstStride[plane];

  2312.                 }

  2313.             }else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)

  2314.                   && isBE(c->srcFormat) != isBE(c->dstFormat)){

  2315. 

  2316.                 for (i=0; i<height; i++){

  2317.                     for (j=0; j<length; j++)

  2318.                         ((uint16_t*)dstPtr)[j] = bswap_16(((uint16_t*)srcPtr)[j]);

  2319.                     srcPtr+= srcStride[plane];

  2320.                     dstPtr+= dstStride[plane];

  2321.                 }

  2322.             } else if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  2323.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  2324.             else

  2325.             {

  2326.                 if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))

  2327.                     length*=2;

  2328.                 for (i=0; i<height; i++)

  2329.                 {

  2330.                     memcpy(dstPtr, srcPtr, length);

  2331.                     srcPtr+= srcStride[plane];

  2332.                     dstPtr+= dstStride[plane];

  2333.                 }

  2334.             }

  2335.         }

  2336.     }

  2337.     return srcSliceH;

  2338. }

  2339. 

  2340. 

  2341. static void getSubSampleFactors(int *h, int *v, int format){

  2342.     switch(format){

  2343.     case PIX_FMT_UYVY422:

  2344.     case PIX_FMT_YUYV422:

  2345.         *h=1;

  2346.         *v=0;

  2347.         break;

  2348.     case PIX_FMT_YUV420P:

  2349.     case PIX_FMT_YUV420PLE:

  2350.     case PIX_FMT_YUV420PBE:

  2351.     case PIX_FMT_YUVA420P:

  2352.     case PIX_FMT_GRAY16BE:

  2353.     case PIX_FMT_GRAY16LE:

  2354.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  2355.     case PIX_FMT_NV12:

  2356.     case PIX_FMT_NV21:

  2357.         *h=1;

  2358.         *v=1;

  2359.         break;

  2360.     case PIX_FMT_YUV440P:

  2361.         *h=0;

  2362.         *v=1;

  2363.         break;

  2364.     case PIX_FMT_YUV410P:

  2365.         *h=2;

  2366.         *v=2;

  2367.         break;

  2368.     case PIX_FMT_YUV444P:

  2369.     case PIX_FMT_YUV444PLE:

  2370.     case PIX_FMT_YUV444PBE:

  2371.         *h=0;

  2372.         *v=0;

  2373.         break;

  2374.     case PIX_FMT_YUV422P:

  2375.     case PIX_FMT_YUV422PLE:

  2376.     case PIX_FMT_YUV422PBE:

  2377.         *h=1;

  2378.         *v=0;

  2379.         break;

  2380.     case PIX_FMT_YUV411P:

  2381.         *h=2;

  2382.         *v=0;

  2383.         break;

  2384.     default:

  2385.         *h=0;

  2386.         *v=0;

  2387.         break;

  2388.     }

  2389. }

  2390. 

  2391. static uint16_t roundToInt16(int64_t f){

  2392.     int r= (f + (1<<15))>>16;

  2393.          if (r<-0x7FFF) return 0x8000;

  2394.     else if (r> 0x7FFF) return 0x7FFF;

  2395.     else                return r;

  2396. }

  2397. 

  2398. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){

  2399.     int64_t crv =  inv_table[0];

  2400.     int64_t cbu =  inv_table[1];

  2401.     int64_t cgu = -inv_table[2];

  2402.     int64_t cgv = -inv_table[3];

  2403.     int64_t cy  = 1<<16;

  2404.     int64_t oy  = 0;

  2405. 

  2406.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  2407.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  2408. 

  2409.     c->brightness= brightness;

  2410.     c->contrast  = contrast;

  2411.     c->saturation= saturation;

  2412.     c->srcRange  = srcRange;

  2413.     c->dstRange  = dstRange;

  2414.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2415. 

  2416.     c->uOffset=   0x0400040004000400LL;

  2417.     c->vOffset=   0x0400040004000400LL;

  2418. 

  2419.     if (!srcRange){

  2420.         cy= (cy*255) / 219;

  2421.         oy= 16<<16;

  2422.     }else{

  2423.         crv= (crv*224) / 255;

  2424.         cbu= (cbu*224) / 255;

  2425.         cgu= (cgu*224) / 255;

  2426.         cgv= (cgv*224) / 255;

  2427.     }

  2428. 

  2429.     cy = (cy *contrast             )>>16;

  2430.     crv= (crv*contrast * saturation)>>32;

  2431.     cbu= (cbu*contrast * saturation)>>32;

  2432.     cgu= (cgu*contrast * saturation)>>32;

  2433.     cgv= (cgv*contrast * saturation)>>32;

  2434. 

  2435.     oy -= 256*brightness;

  2436. 

  2437.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  2438.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  2439.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  2440.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  2441.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  2442.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  2443. 

  2444.     c->yuv2rgb_y_coeff  = (int16_t)roundToInt16(cy <<13);

  2445.     c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);

  2446.     c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);

  2447.     c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);

  2448.     c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);

  2449.     c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);

  2450. 

  2451.     ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  2452.     //FIXME factorize

  2453. 

  2454. #ifdef COMPILE_ALTIVEC

  2455.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  2456.         ff_yuv2rgb_init_tables_altivec(c, inv_table, brightness, contrast, saturation);

  2457. #endif

  2458.     return 0;

  2459. }

  2460. 

  2461. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){

  2462.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2463. 

  2464.     *inv_table = c->srcColorspaceTable;

  2465.     *table     = c->dstColorspaceTable;

  2466.     *srcRange  = c->srcRange;

  2467.     *dstRange  = c->dstRange;

  2468.     *brightness= c->brightness;

  2469.     *contrast  = c->contrast;

  2470.     *saturation= c->saturation;

  2471. 

  2472.     return 0;

  2473. }

  2474. 

  2475. static int handle_jpeg(enum PixelFormat *format)

  2476. {

  2477.     switch (*format) {

  2478.         case PIX_FMT_YUVJ420P:

  2479.             *format = PIX_FMT_YUV420P;

  2480.             return 1;

  2481.         case PIX_FMT_YUVJ422P:

  2482.             *format = PIX_FMT_YUV422P;

  2483.             return 1;

  2484.         case PIX_FMT_YUVJ444P:

  2485.             *format = PIX_FMT_YUV444P;

  2486.             return 1;

  2487.         case PIX_FMT_YUVJ440P:

  2488.             *format = PIX_FMT_YUV440P;

  2489.             return 1;

  2490.         default:

  2491.             return 0;

  2492.     }

  2493. }

  2494. 

  2495. SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  2496.                            SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)

  2497. {

  2498. 

  2499.     SwsContext *c;

  2500.     int i;

  2501.     int usesVFilter, usesHFilter;

  2502.     int unscaled, needsDither;

  2503.     int srcRange, dstRange;

  2504.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2505. #if ARCH_X86

  2506.     if (flags & SWS_CPU_CAPS_MMX)

  2507.         __asm__ volatile("emms\n\t"::: "memory");

  2508. #endif

  2509. 

  2510. #if !CONFIG_RUNTIME_CPUDETECT //ensure that the flags match the compiled variant if cpudetect is off

  2511.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2512. #if   COMPILE_TEMPLATE_MMX2

  2513.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2514. #elif COMPILE_TEMPLATE_AMD3DNOW

  2515.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2516. #elif COMPILE_TEMPLATE_MMX

  2517.     flags |= SWS_CPU_CAPS_MMX;

  2518. #elif COMPILE_TEMPLATE_ALTIVEC

  2519.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2520. #elif ARCH_BFIN

  2521.     flags |= SWS_CPU_CAPS_BFIN;

  2522. #endif

  2523. #endif /* CONFIG_RUNTIME_CPUDETECT */

  2524.     if (clip_table[512] != 255) globalInit();

  2525.     if (!rgb15to16) sws_rgb2rgb_init(flags);

  2526. 

  2527.     unscaled = (srcW == dstW && srcH == dstH);

  2528.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2529.         && (fmt_depth(dstFormat))<24

  2530.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2531. 

  2532.     srcRange = handle_jpeg(&srcFormat);

  2533.     dstRange = handle_jpeg(&dstFormat);

  2534. 

  2535.     if (!isSupportedIn(srcFormat))

  2536.     {

  2537.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));

  2538.         return NULL;

  2539.     }

  2540.     if (!isSupportedOut(dstFormat))

  2541.     {

  2542.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));

  2543.         return NULL;

  2544.     }

  2545. 

  2546.     i= flags & ( SWS_POINT

  2547.                 |SWS_AREA

  2548.                 |SWS_BILINEAR

  2549.                 |SWS_FAST_BILINEAR

  2550.                 |SWS_BICUBIC

  2551.                 |SWS_X

  2552.                 |SWS_GAUSS

  2553.                 |SWS_LANCZOS

  2554.                 |SWS_SINC

  2555.                 |SWS_SPLINE

  2556.                 |SWS_BICUBLIN);

  2557.     if(!i || (i & (i-1)))

  2558.     {

  2559.         av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be chosen\n");

  2560.         return NULL;

  2561.     }

  2562. 

  2563.     /* sanity check */

  2564.     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

  2565.     {

  2566.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2567.                srcW, srcH, dstW, dstH);

  2568.         return NULL;

  2569.     }

  2570.     if(srcW > VOFW || dstW > VOFW){

  2571.         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile-time maximum width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");

  2572.         return NULL;

  2573.     }

  2574. 

  2575.     if (!dstFilter) dstFilter= &dummyFilter;

  2576.     if (!srcFilter) srcFilter= &dummyFilter;

  2577. 

  2578.     c= av_mallocz(sizeof(SwsContext));

  2579. 

  2580.     c->av_class = &sws_context_class;

  2581.     c->srcW= srcW;

  2582.     c->srcH= srcH;

  2583.     c->dstW= dstW;

  2584.     c->dstH= dstH;

  2585.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2586.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2587.     c->flags= flags;

  2588.     c->dstFormat= dstFormat;

  2589.     c->srcFormat= srcFormat;

  2590.     c->vRounder= 4* 0x0001000100010001ULL;

  2591. 

  2592.     usesHFilter= usesVFilter= 0;

  2593.     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;

  2594.     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;

  2595.     if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;

  2596.     if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;

  2597.     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;

  2598.     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;

  2599.     if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;

  2600.     if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;

  2601. 

  2602.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2603.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2604. 

  2605.     // reuse chroma for 2 pixels RGB/BGR unless user wants full chroma interpolation

  2606.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2607. 

  2608.     // drop some chroma lines if the user wants it

  2609.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2610.     c->chrSrcVSubSample+= c->vChrDrop;

  2611. 

  2612.     // drop every other pixel for chroma calculation unless user wants full chroma

  2613.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2614.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2615.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2616.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE

  2617.       && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2618.         c->chrSrcHSubSample=1;

  2619. 

  2620.     if (param){

  2621.         c->param[0] = param[0];

  2622.         c->param[1] = param[1];

  2623.     }else{

  2624.         c->param[0] =

  2625.         c->param[1] = SWS_PARAM_DEFAULT;

  2626.     }

  2627. 

  2628.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2629.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2630.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2631.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2632.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2633. 

  2634.     sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);

  2635. 

  2636.     /* unscaled special cases */

  2637.     if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat)))

  2638.     {

  2639.         /* yv12_to_nv12 */

  2640.         if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))

  2641.         {

  2642.             c->swScale= PlanarToNV12Wrapper;

  2643.         }

  2644.         /* yuv2bgr */

  2645.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && (isBGR(dstFormat) || isRGB(dstFormat))

  2646.             && !(flags & SWS_ACCURATE_RND) && !(dstH&1))

  2647.         {

  2648.             c->swScale= ff_yuv2rgb_get_func_ptr(c);

  2649.         }

  2650. 

  2651.         if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT))

  2652.         {

  2653.             c->swScale= yvu9toyv12Wrapper;

  2654.         }

  2655. 

  2656.         /* bgr24toYV12 */

  2657.         if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))

  2658.             c->swScale= bgr24toyv12Wrapper;

  2659. 

  2660.         /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  2661.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2662.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2663.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2664.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2665.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2666.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2667.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2668.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2669.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2670.            && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  2671.                                              && dstFormat != PIX_FMT_RGB32_1

  2672.                                              && dstFormat != PIX_FMT_BGR32_1

  2673.            && srcFormat != PIX_FMT_RGB48LE   && dstFormat != PIX_FMT_RGB48LE

  2674.            && srcFormat != PIX_FMT_RGB48BE   && dstFormat != PIX_FMT_RGB48BE

  2675.            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2676.              c->swScale= rgb2rgbWrapper;

  2677. 

  2678.         if ((usePal(srcFormat) && (

  2679.                  dstFormat == PIX_FMT_RGB32   ||

  2680.                  dstFormat == PIX_FMT_RGB32_1 ||

  2681.                  dstFormat == PIX_FMT_RGB24   ||

  2682.                  dstFormat == PIX_FMT_BGR32   ||

  2683.                  dstFormat == PIX_FMT_BGR32_1 ||

  2684.                  dstFormat == PIX_FMT_BGR24)))

  2685.              c->swScale= pal2rgbWrapper;

  2686. 

  2687.         if (srcFormat == PIX_FMT_YUV422P)

  2688.         {

  2689.             if (dstFormat == PIX_FMT_YUYV422)

  2690.                 c->swScale= YUV422PToYuy2Wrapper;

  2691.             else if (dstFormat == PIX_FMT_UYVY422)

  2692.                 c->swScale= YUV422PToUyvyWrapper;

  2693.         }

  2694. 

  2695.         /* LQ converters if -sws 0 or -sws 4*/

  2696.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){

  2697.             /* yv12_to_yuy2 */

  2698.             if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P)

  2699.             {

  2700.                 if (dstFormat == PIX_FMT_YUYV422)

  2701.                     c->swScale= PlanarToYuy2Wrapper;

  2702.                 else if (dstFormat == PIX_FMT_UYVY422)

  2703.                     c->swScale= PlanarToUyvyWrapper;

  2704.             }

  2705.         }

  2706.         if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  2707.             c->swScale= YUYV2YUV420Wrapper;

  2708.         if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  2709.             c->swScale= UYVY2YUV420Wrapper;

  2710.         if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)

  2711.             c->swScale= YUYV2YUV422Wrapper;

  2712.         if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)

  2713.             c->swScale= UYVY2YUV422Wrapper;

  2714. 

  2715. #ifdef COMPILE_ALTIVEC

  2716.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2717.             !(c->flags & SWS_BITEXACT) &&

  2718.             srcFormat == PIX_FMT_YUV420P) {

  2719.           // unscaled YV12 -> packed YUV, we want speed

  2720.           if (dstFormat == PIX_FMT_YUYV422)

  2721.               c->swScale= yv12toyuy2_unscaled_altivec;

  2722.           else if (dstFormat == PIX_FMT_UYVY422)

  2723.               c->swScale= yv12touyvy_unscaled_altivec;

  2724.         }

  2725. #endif

  2726. 

  2727.         /* simple copy */

  2728.         if (  srcFormat == dstFormat

  2729.             || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)

  2730.             || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)

  2731.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2732.             || (isPlanarYUV(dstFormat) && isGray(srcFormat))

  2733.             || (isGray(dstFormat) && isGray(srcFormat))

  2734.             || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)

  2735.                 && c->chrDstHSubSample == c->chrSrcHSubSample

  2736.                 && c->chrDstVSubSample == c->chrSrcVSubSample

  2737.                 && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21

  2738.                 && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))

  2739.         {

  2740.             if (isPacked(c->srcFormat))

  2741.                 c->swScale= packedCopy;

  2742.             else /* Planar YUV or gray */

  2743.                 c->swScale= planarCopy;

  2744.         }

  2745. #if ARCH_BFIN

  2746.         if (flags & SWS_CPU_CAPS_BFIN)

  2747.             ff_bfin_get_unscaled_swscale (c);

  2748. #endif

  2749. 

  2750.         if (c->swScale){

  2751.             if (flags&SWS_PRINT_INFO)

  2752.                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",

  2753.                                 sws_format_name(srcFormat), sws_format_name(dstFormat));

  2754.             return c;

  2755.         }

  2756.     }

  2757. 

  2758.     if (flags & SWS_CPU_CAPS_MMX2)

  2759.     {

  2760.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2761.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))

  2762.         {

  2763.             if (flags&SWS_PRINT_INFO)

  2764.                 av_log(c, AV_LOG_INFO, "output width is not a multiple of 32 -> no MMX2 scaler\n");

  2765.         }

  2766.         if (usesHFilter) c->canMMX2BeUsed=0;

  2767.     }

  2768.     else

  2769.         c->canMMX2BeUsed=0;

  2770. 

  2771.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2772.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2773. 

  2774.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2775.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2776.     // n-2 is the last chrominance sample available

  2777.     // this is not perfect, but no one should notice the difference, the more correct variant

  2778.     // would be like the vertical one, but that would require some special code for the

  2779.     // first and last pixel

  2780.     if (flags&SWS_FAST_BILINEAR)

  2781.     {

  2782.         if (c->canMMX2BeUsed)

  2783.         {

  2784.             c->lumXInc+= 20;

  2785.             c->chrXInc+= 20;

  2786.         }

  2787.         //we don't use the x86 asm scaler if MMX is available

  2788.         else if (flags & SWS_CPU_CAPS_MMX)

  2789.         {

  2790.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2791.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2792.         }

  2793.     }

  2794. 

  2795.     /* precalculate horizontal scaler filter coefficients */

  2796.     {

  2797.         const int filterAlign=

  2798.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2799.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2800.             1;

  2801. 

  2802.         initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2803.                    srcW      ,       dstW, filterAlign, 1<<14,

  2804.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2805.                    srcFilter->lumH, dstFilter->lumH, c->param);

  2806.         initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2807.                    c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2808.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2809.                    srcFilter->chrH, dstFilter->chrH, c->param);

  2810. 

  2811. #define MAX_FUNNY_CODE_SIZE 10000

  2812. #if defined(COMPILE_MMX2)

  2813. // can't downscale !!!

  2814.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))

  2815.         {

  2816. #ifdef MAP_ANONYMOUS

  2817.             c->funnyYCode  = mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2818.             c->funnyUVCode = mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2819. #elif HAVE_VIRTUALALLOC

  2820.             c->funnyYCode  = VirtualAlloc(NULL, MAX_FUNNY_CODE_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2821.             c->funnyUVCode = VirtualAlloc(NULL, MAX_FUNNY_CODE_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2822. #else

  2823.             c->funnyYCode  = av_malloc(MAX_FUNNY_CODE_SIZE);

  2824.             c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2825. #endif

  2826. 

  2827.             c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));

  2828.             c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));

  2829.             c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));

  2830.             c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));

  2831. 

  2832.             initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2833.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2834.         }

  2835. #endif /* defined(COMPILE_MMX2) */

  2836.     } // initialize horizontal stuff

  2837. 

  2838. 

  2839. 

  2840.     /* precalculate vertical scaler filter coefficients */

  2841.     {

  2842.         const int filterAlign=

  2843.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2844.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2845.             1;

  2846. 

  2847.         initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2848.                    srcH      ,        dstH, filterAlign, (1<<12),

  2849.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2850.                    srcFilter->lumV, dstFilter->lumV, c->param);

  2851.         initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2852.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12),

  2853.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2854.                    srcFilter->chrV, dstFilter->chrV, c->param);

  2855. 

  2856. #ifdef COMPILE_ALTIVEC

  2857.         c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);

  2858.         c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);

  2859. 

  2860.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2861.             int j;

  2862.             short *p = (short *)&c->vYCoeffsBank[i];

  2863.             for (j=0;j<8;j++)

  2864.                 p[j] = c->vLumFilter[i];

  2865.         }

  2866. 

  2867.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2868.             int j;

  2869.             short *p = (short *)&c->vCCoeffsBank[i];

  2870.             for (j=0;j<8;j++)

  2871.                 p[j] = c->vChrFilter[i];

  2872.         }

  2873. #endif

  2874.     }

  2875. 

  2876.     // calculate buffer sizes so that they won't run out while handling these damn slices

  2877.     c->vLumBufSize= c->vLumFilterSize;

  2878.     c->vChrBufSize= c->vChrFilterSize;

  2879.     for (i=0; i<dstH; i++)

  2880.     {

  2881.         int chrI= i*c->chrDstH / dstH;

  2882.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2883.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2884. 

  2885.         nextSlice>>= c->chrSrcVSubSample;

  2886.         nextSlice<<= c->chrSrcVSubSample;

  2887.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2888.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];

  2889.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2890.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2891.     }

  2892. 

  2893.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2894.     c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2895.     c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));

  2896.     if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat))

  2897.         c->alpPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2898.     //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)

  2899.     /* align at 16 bytes for AltiVec */

  2900.     for (i=0; i<c->vLumBufSize; i++)

  2901.         c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2902.     for (i=0; i<c->vChrBufSize; i++)

  2903.         c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);

  2904.     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf)

  2905.         for (i=0; i<c->vLumBufSize; i++)

  2906.             c->alpPixBuf[i]= c->alpPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2907. 

  2908.     //try to avoid drawing green stuff between the right end and the stride end

  2909.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);

  2910. 

  2911.     assert(2*VOFW == VOF);

  2912. 

  2913.     assert(c->chrDstH <= dstH);

  2914. 

  2915.     if (flags&SWS_PRINT_INFO)

  2916.     {

  2917. #ifdef DITHER1XBPP

  2918.         const char *dither= " dithered";

  2919. #else

  2920.         const char *dither= "";

  2921. #endif

  2922.         if (flags&SWS_FAST_BILINEAR)

  2923.             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");

  2924.         else if (flags&SWS_BILINEAR)

  2925.             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");

  2926.         else if (flags&SWS_BICUBIC)

  2927.             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");

  2928.         else if (flags&SWS_X)

  2929.             av_log(c, AV_LOG_INFO, "Experimental scaler, ");

  2930.         else if (flags&SWS_POINT)

  2931.             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");

  2932.         else if (flags&SWS_AREA)

  2933.             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");

  2934.         else if (flags&SWS_BICUBLIN)

  2935.             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");

  2936.         else if (flags&SWS_GAUSS)

  2937.             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");

  2938.         else if (flags&SWS_SINC)

  2939.             av_log(c, AV_LOG_INFO, "Sinc scaler, ");

  2940.         else if (flags&SWS_LANCZOS)

  2941.             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");

  2942.         else if (flags&SWS_SPLINE)

  2943.             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");

  2944.         else

  2945.             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");

  2946. 

  2947.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2948.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  2949.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2950.         else

  2951.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  2952.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  2953. 

  2954.         if (flags & SWS_CPU_CAPS_MMX2)

  2955.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  2956.         else if (flags & SWS_CPU_CAPS_3DNOW)

  2957.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  2958.         else if (flags & SWS_CPU_CAPS_MMX)

  2959.             av_log(c, AV_LOG_INFO, "using MMX\n");

  2960.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  2961.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  2962.         else

  2963.             av_log(c, AV_LOG_INFO, "using C\n");

  2964.     }

  2965. 

  2966.     if (flags & SWS_PRINT_INFO)

  2967.     {

  2968.         if (flags & SWS_CPU_CAPS_MMX)

  2969.         {

  2970.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2971.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  2972.             else

  2973.             {

  2974.                 if (c->hLumFilterSize==4)

  2975.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");

  2976.                 else if (c->hLumFilterSize==8)

  2977.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");

  2978.                 else

  2979.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");

  2980. 

  2981.                 if (c->hChrFilterSize==4)

  2982.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");

  2983.                 else if (c->hChrFilterSize==8)

  2984.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");

  2985.                 else

  2986.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");

  2987.             }

  2988.         }

  2989.         else

  2990.         {

  2991. #if ARCH_X86

  2992.             av_log(c, AV_LOG_VERBOSE, "using x86 asm scaler for horizontal scaling\n");

  2993. #else

  2994.             if (flags & SWS_FAST_BILINEAR)

  2995.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");

  2996.             else

  2997.                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");

  2998. #endif

  2999.         }

  3000.         if (isPlanarYUV(dstFormat))

  3001.         {

  3002.             if (c->vLumFilterSize==1)

  3003.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3004.             else

  3005.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3006.         }

  3007.         else

  3008.         {

  3009.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  3010.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  3011.                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3012.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  3013.                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3014.             else

  3015.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3016.         }

  3017. 

  3018.         if (dstFormat==PIX_FMT_BGR24)

  3019.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 converter\n",

  3020.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  3021.         else if (dstFormat==PIX_FMT_RGB32)

  3022.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3023.         else if (dstFormat==PIX_FMT_BGR565)

  3024.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3025.         else if (dstFormat==PIX_FMT_BGR555)

  3026.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3027. 

  3028.         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  3029.     }

  3030.     if (flags & SWS_PRINT_INFO)

  3031.     {

  3032.         av_log(c, AV_LOG_DEBUG, "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  3033.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  3034.         av_log(c, AV_LOG_DEBUG, "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  3035.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  3036.     }

  3037. 

  3038.     c->swScale= getSwsFunc(c);

  3039.     return c;

  3040. }

  3041. 

  3042. static void reset_ptr(uint8_t* src[], int format){

  3043.     if(!isALPHA(format))

  3044.         src[3]=NULL;

  3045.     if(!isPlanarYUV(format)){

  3046.         src[3]=src[2]=NULL;

  3047.         if(   format != PIX_FMT_PAL8

  3048.            && format != PIX_FMT_RGB8

  3049.            && format != PIX_FMT_BGR8

  3050.            && format != PIX_FMT_RGB4_BYTE

  3051.            && format != PIX_FMT_BGR4_BYTE

  3052.           )

  3053.             src[1]= NULL;

  3054.     }

  3055. }

  3056. 

  3057. /**

  3058.  * swscale wrapper, so we don't need to export the SwsContext.

  3059.  * Assumes planar YUV to be in YUV order instead of YVU.

  3060.  */

  3061. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  3062.               int srcSliceH, uint8_t* dst[], int dstStride[]){

  3063.     int i;

  3064.     uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};

  3065.     uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};

  3066. 

  3067.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  3068.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  3069.         return 0;

  3070.     }

  3071.     if (c->sliceDir == 0) {

  3072.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  3073.     }

  3074. 

  3075.     if (usePal(c->srcFormat)){

  3076.         for (i=0; i<256; i++){

  3077.             int p, r, g, b,y,u,v;

  3078.             if(c->srcFormat == PIX_FMT_PAL8){

  3079.                 p=((uint32_t*)(src[1]))[i];

  3080.                 r= (p>>16)&0xFF;

  3081.                 g= (p>> 8)&0xFF;

  3082.                 b=  p     &0xFF;

  3083.             }else if(c->srcFormat == PIX_FMT_RGB8){

  3084.                 r= (i>>5    )*36;

  3085.                 g= ((i>>2)&7)*36;

  3086.                 b= (i&3     )*85;

  3087.             }else if(c->srcFormat == PIX_FMT_BGR8){

  3088.                 b= (i>>6    )*85;

  3089.                 g= ((i>>3)&7)*36;

  3090.                 r= (i&7     )*36;

  3091.             }else if(c->srcFormat == PIX_FMT_RGB4_BYTE){

  3092.                 r= (i>>3    )*255;

  3093.                 g= ((i>>1)&3)*85;

  3094.                 b= (i&1     )*255;

  3095.             }else {

  3096.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  3097.                 b= (i>>3    )*255;

  3098.                 g= ((i>>1)&3)*85;

  3099.                 r= (i&1     )*255;

  3100.             }

  3101.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3102.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3103.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3104.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  3105. 

  3106. 

  3107.             switch(c->dstFormat) {

  3108.             case PIX_FMT_BGR32:

  3109. #if !HAVE_BIGENDIAN

  3110.             case PIX_FMT_RGB24:

  3111. #endif

  3112.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  3113.                 break;

  3114.             case PIX_FMT_BGR32_1:

  3115. #if HAVE_BIGENDIAN

  3116.             case PIX_FMT_BGR24:

  3117. #endif

  3118.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  3119.                 break;

  3120.             case PIX_FMT_RGB32_1:

  3121. #if HAVE_BIGENDIAN

  3122.             case PIX_FMT_RGB24:

  3123. #endif

  3124.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  3125.                 break;

  3126.             case PIX_FMT_RGB32:

  3127. #if !HAVE_BIGENDIAN

  3128.             case PIX_FMT_BGR24:

  3129. #endif

  3130.             default:

  3131.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  3132.             }

  3133.         }

  3134.     }

  3135. 

  3136.     // copy strides, so they can safely be modified

  3137.     if (c->sliceDir == 1) {

  3138.         // slices go from top to bottom

  3139.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};

  3140.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};

  3141. 

  3142.         reset_ptr(src2, c->srcFormat);

  3143.         reset_ptr(dst2, c->dstFormat);

  3144. 

  3145.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);

  3146.     } else {

  3147.         // slices go from bottom to top => we flip the image internally

  3148.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};

  3149.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};

  3150. 

  3151.         src2[0] += (srcSliceH-1)*srcStride[0];

  3152.         if (!usePal(c->srcFormat))

  3153.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  3154.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  3155.         src2[3] += (srcSliceH-1)*srcStride[3];

  3156.         dst2[0] += ( c->dstH                      -1)*dstStride[0];

  3157.         dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];

  3158.         dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];

  3159.         dst2[3] += ( c->dstH                      -1)*dstStride[3];

  3160. 

  3161.         reset_ptr(src2, c->srcFormat);

  3162.         reset_ptr(dst2, c->dstFormat);

  3163. 

  3164.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  3165.     }

  3166. }

  3167. 

  3168. #if LIBSWSCALE_VERSION_MAJOR < 1

  3169. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  3170.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  3171.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  3172. }

  3173. #endif

  3174. 

  3175. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  3176.                                 float lumaSharpen, float chromaSharpen,

  3177.                                 float chromaHShift, float chromaVShift,

  3178.                                 int verbose)

  3179. {

  3180.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  3181. 

  3182.     if (lumaGBlur!=0.0){

  3183.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  3184.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  3185.     }else{

  3186.         filter->lumH= sws_getIdentityVec();

  3187.         filter->lumV= sws_getIdentityVec();

  3188.     }

  3189. 

  3190.     if (chromaGBlur!=0.0){

  3191.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  3192.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  3193.     }else{

  3194.         filter->chrH= sws_getIdentityVec();

  3195.         filter->chrV= sws_getIdentityVec();

  3196.     }

  3197. 

  3198.     if (chromaSharpen!=0.0){

  3199.         SwsVector *id= sws_getIdentityVec();

  3200.         sws_scaleVec(filter->chrH, -chromaSharpen);

  3201.         sws_scaleVec(filter->chrV, -chromaSharpen);

  3202.         sws_addVec(filter->chrH, id);

  3203.         sws_addVec(filter->chrV, id);

  3204.         sws_freeVec(id);

  3205.     }

  3206. 

  3207.     if (lumaSharpen!=0.0){

  3208.         SwsVector *id= sws_getIdentityVec();

  3209.         sws_scaleVec(filter->lumH, -lumaSharpen);

  3210.         sws_scaleVec(filter->lumV, -lumaSharpen);

  3211.         sws_addVec(filter->lumH, id);

  3212.         sws_addVec(filter->lumV, id);

  3213.         sws_freeVec(id);

  3214.     }

  3215. 

  3216.     if (chromaHShift != 0.0)

  3217.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  3218. 

  3219.     if (chromaVShift != 0.0)

  3220.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  3221. 

  3222.     sws_normalizeVec(filter->chrH, 1.0);

  3223.     sws_normalizeVec(filter->chrV, 1.0);

  3224.     sws_normalizeVec(filter->lumH, 1.0);

  3225.     sws_normalizeVec(filter->lumV, 1.0);

  3226. 

  3227.     if (verbose) sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);

  3228.     if (verbose) sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);

  3229. 

  3230.     return filter;

  3231. }

  3232. 

  3233. SwsVector *sws_getGaussianVec(double variance, double quality){

  3234.     const int length= (int)(variance*quality + 0.5) | 1;

  3235.     int i;

  3236.     double *coeff= av_malloc(length*sizeof(double));

  3237.     double middle= (length-1)*0.5;

  3238.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3239. 

  3240.     vec->coeff= coeff;

  3241.     vec->length= length;

  3242. 

  3243.     for (i=0; i<length; i++)

  3244.     {

  3245.         double dist= i-middle;

  3246.         coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);

  3247.     }

  3248. 

  3249.     sws_normalizeVec(vec, 1.0);

  3250. 

  3251.     return vec;

  3252. }

  3253. 

  3254. SwsVector *sws_getConstVec(double c, int length){

  3255.     int i;

  3256.     double *coeff= av_malloc(length*sizeof(double));

  3257.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3258. 

  3259.     vec->coeff= coeff;

  3260.     vec->length= length;

  3261. 

  3262.     for (i=0; i<length; i++)

  3263.         coeff[i]= c;

  3264. 

  3265.     return vec;

  3266. }

  3267. 

  3268. 

  3269. SwsVector *sws_getIdentityVec(void){

  3270.     return sws_getConstVec(1.0, 1);

  3271. }

  3272. 

  3273. double sws_dcVec(SwsVector *a){

  3274.     int i;

  3275.     double sum=0;

  3276. 

  3277.     for (i=0; i<a->length; i++)

  3278.         sum+= a->coeff[i];

  3279. 

  3280.     return sum;

  3281. }

  3282. 

  3283. void sws_scaleVec(SwsVector *a, double scalar){

  3284.     int i;

  3285. 

  3286.     for (i=0; i<a->length; i++)

  3287.         a->coeff[i]*= scalar;

  3288. }

  3289. 

  3290. void sws_normalizeVec(SwsVector *a, double height){

  3291.     sws_scaleVec(a, height/sws_dcVec(a));

  3292. }

  3293. 

  3294. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){

  3295.     int length= a->length + b->length - 1;

  3296.     double *coeff= av_malloc(length*sizeof(double));

  3297.     int i, j;

  3298.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3299. 

  3300.     vec->coeff= coeff;

  3301.     vec->length= length;

  3302. 

  3303.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3304. 

  3305.     for (i=0; i<a->length; i++)

  3306.     {

  3307.         for (j=0; j<b->length; j++)

  3308.         {

  3309.             coeff[i+j]+= a->coeff[i]*b->coeff[j];

  3310.         }

  3311.     }

  3312. 

  3313.     return vec;

  3314. }

  3315. 

  3316. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){

  3317.     int length= FFMAX(a->length, b->length);

  3318.     double *coeff= av_malloc(length*sizeof(double));

  3319.     int i;

  3320.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3321. 

  3322.     vec->coeff= coeff;

  3323.     vec->length= length;

  3324. 

  3325.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3326. 

  3327.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3328.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  3329. 

  3330.     return vec;

  3331. }

  3332. 

  3333. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){

  3334.     int length= FFMAX(a->length, b->length);

  3335.     double *coeff= av_malloc(length*sizeof(double));

  3336.     int i;

  3337.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3338. 

  3339.     vec->coeff= coeff;

  3340.     vec->length= length;

  3341. 

  3342.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3343. 

  3344.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3345.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  3346. 

  3347.     return vec;

  3348. }

  3349. 

  3350. /* shift left / or right if "shift" is negative */

  3351. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){

  3352.     int length= a->length + FFABS(shift)*2;

  3353.     double *coeff= av_malloc(length*sizeof(double));

  3354.     int i;

  3355.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3356. 

  3357.     vec->coeff= coeff;

  3358.     vec->length= length;

  3359. 

  3360.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3361. 

  3362.     for (i=0; i<a->length; i++)

  3363.     {

  3364.         coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  3365.     }

  3366. 

  3367.     return vec;

  3368. }

  3369. 

  3370. void sws_shiftVec(SwsVector *a, int shift){

  3371.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  3372.     av_free(a->coeff);

  3373.     a->coeff= shifted->coeff;

  3374.     a->length= shifted->length;

  3375.     av_free(shifted);

  3376. }

  3377. 

  3378. void sws_addVec(SwsVector *a, SwsVector *b){

  3379.     SwsVector *sum= sws_sumVec(a, b);

  3380.     av_free(a->coeff);

  3381.     a->coeff= sum->coeff;

  3382.     a->length= sum->length;

  3383.     av_free(sum);

  3384. }

  3385. 

  3386. void sws_subVec(SwsVector *a, SwsVector *b){

  3387.     SwsVector *diff= sws_diffVec(a, b);

  3388.     av_free(a->coeff);

  3389.     a->coeff= diff->coeff;

  3390.     a->length= diff->length;

  3391.     av_free(diff);

  3392. }

  3393. 

  3394. void sws_convVec(SwsVector *a, SwsVector *b){

  3395.     SwsVector *conv= sws_getConvVec(a, b);

  3396.     av_free(a->coeff);

  3397.     a->coeff= conv->coeff;

  3398.     a->length= conv->length;

  3399.     av_free(conv);

  3400. }

  3401. 

  3402. SwsVector *sws_cloneVec(SwsVector *a){

  3403.     double *coeff= av_malloc(a->length*sizeof(double));

  3404.     int i;

  3405.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3406. 

  3407.     vec->coeff= coeff;

  3408.     vec->length= a->length;

  3409. 

  3410.     for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];

  3411. 

  3412.     return vec;

  3413. }

  3414. 

  3415. void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level){

  3416.     int i;

  3417.     double max=0;

  3418.     double min=0;

  3419.     double range;

  3420. 

  3421.     for (i=0; i<a->length; i++)

  3422.         if (a->coeff[i]>max) max= a->coeff[i];

  3423. 

  3424.     for (i=0; i<a->length; i++)

  3425.         if (a->coeff[i]<min) min= a->coeff[i];

  3426. 

  3427.     range= max - min;

  3428. 

  3429.     for (i=0; i<a->length; i++)

  3430.     {

  3431.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  3432.         av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);

  3433.         for (;x>0; x--) av_log(log_ctx, log_level, " ");

  3434.         av_log(log_ctx, log_level, "|\n");

  3435.     }

  3436. }

  3437. 

  3438. #if LIBSWSCALE_VERSION_MAJOR < 1

  3439. void sws_printVec(SwsVector *a){

  3440.     sws_printVec2(a, NULL, AV_LOG_DEBUG);

  3441. }

  3442. #endif

  3443. 

  3444. void sws_freeVec(SwsVector *a){

  3445.     if (!a) return;

  3446.     av_freep(&a->coeff);

  3447.     a->length=0;

  3448.     av_free(a);

  3449. }

  3450. 

  3451. void sws_freeFilter(SwsFilter *filter){

  3452.     if (!filter) return;

  3453. 

  3454.     if (filter->lumH) sws_freeVec(filter->lumH);

  3455.     if (filter->lumV) sws_freeVec(filter->lumV);

  3456.     if (filter->chrH) sws_freeVec(filter->chrH);

  3457.     if (filter->chrV) sws_freeVec(filter->chrV);

  3458.     av_free(filter);

  3459. }

  3460. 

  3461. 

  3462. void sws_freeContext(SwsContext *c){

  3463.     int i;

  3464.     if (!c) return;

  3465. 

  3466.     if (c->lumPixBuf)

  3467.     {

  3468.         for (i=0; i<c->vLumBufSize; i++)

  3469.             av_freep(&c->lumPixBuf[i]);

  3470.         av_freep(&c->lumPixBuf);

  3471.     }

  3472. 

  3473.     if (c->chrPixBuf)

  3474.     {

  3475.         for (i=0; i<c->vChrBufSize; i++)

  3476.             av_freep(&c->chrPixBuf[i]);

  3477.         av_freep(&c->chrPixBuf);

  3478.     }

  3479. 

  3480.     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf){

  3481.         for (i=0; i<c->vLumBufSize; i++)

  3482.             av_freep(&c->alpPixBuf[i]);

  3483.         av_freep(&c->alpPixBuf);

  3484.     }

  3485. 

  3486.     av_freep(&c->vLumFilter);

  3487.     av_freep(&c->vChrFilter);

  3488.     av_freep(&c->hLumFilter);

  3489.     av_freep(&c->hChrFilter);

  3490. #ifdef COMPILE_ALTIVEC

  3491.     av_freep(&c->vYCoeffsBank);

  3492.     av_freep(&c->vCCoeffsBank);

  3493. #endif

  3494. 

  3495.     av_freep(&c->vLumFilterPos);

  3496.     av_freep(&c->vChrFilterPos);

  3497.     av_freep(&c->hLumFilterPos);

  3498.     av_freep(&c->hChrFilterPos);

  3499. 

  3500. #if ARCH_X86 && CONFIG_GPL

  3501. #ifdef MAP_ANONYMOUS

  3502.     if (c->funnyYCode ) munmap(c->funnyYCode , MAX_FUNNY_CODE_SIZE);

  3503.     if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);

  3504. #elif HAVE_VIRTUALALLOC

  3505.     if (c->funnyYCode ) VirtualFree(c->funnyYCode , MAX_FUNNY_CODE_SIZE, MEM_RELEASE);

  3506.     if (c->funnyUVCode) VirtualFree(c->funnyUVCode, MAX_FUNNY_CODE_SIZE, MEM_RELEASE);

  3507. #else

  3508.     av_free(c->funnyYCode );

  3509.     av_free(c->funnyUVCode);

  3510. #endif

  3511.     c->funnyYCode=NULL;

  3512.     c->funnyUVCode=NULL;

  3513. #endif /* ARCH_X86 && CONFIG_GPL */

  3514. 

  3515.     av_freep(&c->lumMmx2Filter);

  3516.     av_freep(&c->chrMmx2Filter);

  3517.     av_freep(&c->lumMmx2FilterPos);

  3518.     av_freep(&c->chrMmx2FilterPos);

  3519.     av_freep(&c->yuvTable);

  3520. 

  3521.     av_free(c);

  3522. }

  3523. 

  3524. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  3525.                                         int srcW, int srcH, enum PixelFormat srcFormat,

  3526.                                         int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  3527.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)

  3528. {

  3529.     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};

  3530. 

  3531.     if (!param)

  3532.         param = default_param;

  3533. 

  3534.     if (context) {

  3535.         if (context->srcW != srcW || context->srcH != srcH ||

  3536.             context->srcFormat != srcFormat ||

  3537.             context->dstW != dstW || context->dstH != dstH ||

  3538.             context->dstFormat != dstFormat || context->flags != flags ||

  3539.             context->param[0] != param[0] || context->param[1] != param[1])

  3540.         {

  3541.             sws_freeContext(context);

  3542.             context = NULL;

  3543.         }

  3544.     }

  3545.     if (!context) {

  3546.         return sws_getContext(srcW, srcH, srcFormat,

  3547.                               dstW, dstH, dstFormat, flags,

  3548.                               srcFilter, dstFilter, param);

  3549.     }

  3550.     return context;

  3551. }