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FFmpeg/libswscale/swscale.c

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  1. /*

  2.  * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>

  3.  *

  4.  * This file is part of FFmpeg.

  5.  *

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

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

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

  9.  * (at your option) any later version.

  10.  *

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

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

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

  14.  * GNU General Public License for more details.

  15.  *

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

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

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

  19.  *

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

  21.  * under the LGPL license too

  22.  */

  23. 

  24. /*

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

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

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

  28. 

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

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

  31.   x -> x

  32.   YUV9 -> YV12

  33.   YUV9/YV12 -> Y800

  34.   Y800 -> YUV9/YV12

  35.   BGR24 -> BGR32 & RGB24 -> RGB32

  36.   BGR32 -> BGR24 & RGB32 -> RGB24

  37.   BGR15 -> BGR16

  38. */

  39. 

  40. /*

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

  42.  YV12 -> BGR16

  43.  YV12 -> YV12

  44.  BGR15 -> BGR16

  45.  BGR16 -> BGR16

  46.  YVU9 -> YV12

  47. 

  48. untested special converters

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

  50.   YV12/I420 -> YV12/I420

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

  52.   BGR24 -> BGR32 & RGB24 -> RGB32

  53.   BGR32 -> BGR24 & RGB32 -> RGB24

  54.   BGR24 -> YV12

  55. */

  56. 

  57. #define _SVID_SOURCE //needed for MAP_ANONYMOUS

  58. #include <inttypes.h>

  59. #include <string.h>

  60. #include <math.h>

  61. #include <stdio.h>

  62. #include "config.h"

  63. #include <assert.h>

  64. #if HAVE_SYS_MMAN_H

  65. #include <sys/mman.h>

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

  67. #define MAP_ANONYMOUS MAP_ANON

  68. #endif

  69. #endif

  70. #if HAVE_VIRTUALALLOC

  71. #define WIN32_LEAN_AND_MEAN

  72. #include <windows.h>

  73. #endif

  74. #include "swscale.h"

  75. #include "swscale_internal.h"

  76. #include "rgb2rgb.h"

  77. #include "libavutil/intreadwrite.h"

  78. #include "libavutil/x86_cpu.h"

  79. #include "libavutil/avutil.h"

  80. #include "libavutil/bswap.h"

  81. 

  82. unsigned swscale_version(void)

  83. {

  84.     return LIBSWSCALE_VERSION_INT;

  85. }

  86. 

  87. #undef MOVNTQ

  88. #undef PAVGB

  89. 

  90. //#undef HAVE_MMX2

  91. //#define HAVE_AMD3DNOW

  92. //#undef HAVE_MMX

  93. //#undef ARCH_X86

  94. #define DITHER1XBPP

  95. 

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

  97. 

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

  99. 

  100. #ifdef M_PI

  101. #define PI M_PI

  102. #else

  103. #define PI 3.14159265358979323846

  104. #endif

  105. 

  106. #define isSupportedIn(x)    (       \

  107.            (x)==PIX_FMT_YUV420P     \

  108.         || (x)==PIX_FMT_YUVA420P    \

  109.         || (x)==PIX_FMT_YUYV422     \

  110.         || (x)==PIX_FMT_UYVY422     \

  111.         || (x)==PIX_FMT_RGB48BE     \

  112.         || (x)==PIX_FMT_RGB48LE     \

  113.         || (x)==PIX_FMT_RGB32       \

  114.         || (x)==PIX_FMT_RGB32_1     \

  115.         || (x)==PIX_FMT_BGR24       \

  116.         || (x)==PIX_FMT_BGR565      \

  117.         || (x)==PIX_FMT_BGR555      \

  118.         || (x)==PIX_FMT_BGR32       \

  119.         || (x)==PIX_FMT_BGR32_1     \

  120.         || (x)==PIX_FMT_RGB24       \

  121.         || (x)==PIX_FMT_RGB565      \

  122.         || (x)==PIX_FMT_RGB555      \

  123.         || (x)==PIX_FMT_GRAY8       \

  124.         || (x)==PIX_FMT_YUV410P     \

  125.         || (x)==PIX_FMT_YUV440P     \

  126.         || (x)==PIX_FMT_GRAY16BE    \

  127.         || (x)==PIX_FMT_GRAY16LE    \

  128.         || (x)==PIX_FMT_YUV444P     \

  129.         || (x)==PIX_FMT_YUV422P     \

  130.         || (x)==PIX_FMT_YUV411P     \

  131.         || (x)==PIX_FMT_PAL8        \

  132.         || (x)==PIX_FMT_BGR8        \

  133.         || (x)==PIX_FMT_RGB8        \

  134.         || (x)==PIX_FMT_BGR4_BYTE   \

  135.         || (x)==PIX_FMT_RGB4_BYTE   \

  136.         || (x)==PIX_FMT_YUV440P     \

  137.         || (x)==PIX_FMT_MONOWHITE   \

  138.         || (x)==PIX_FMT_MONOBLACK   \

  139.         || (x)==PIX_FMT_YUV420P16LE   \

  140.         || (x)==PIX_FMT_YUV422P16LE   \

  141.         || (x)==PIX_FMT_YUV444P16LE   \

  142.         || (x)==PIX_FMT_YUV420P16BE   \

  143.         || (x)==PIX_FMT_YUV422P16BE   \

  144.         || (x)==PIX_FMT_YUV444P16BE   \

  145.     )

  146. #define isSupportedOut(x)   (       \

  147.            (x)==PIX_FMT_YUV420P     \

  148.         || (x)==PIX_FMT_YUVA420P    \

  149.         || (x)==PIX_FMT_YUYV422     \

  150.         || (x)==PIX_FMT_UYVY422     \

  151.         || (x)==PIX_FMT_YUV444P     \

  152.         || (x)==PIX_FMT_YUV422P     \

  153.         || (x)==PIX_FMT_YUV411P     \

  154.         || isRGB(x)                 \

  155.         || isBGR(x)                 \

  156.         || (x)==PIX_FMT_NV12        \

  157.         || (x)==PIX_FMT_NV21        \

  158.         || (x)==PIX_FMT_GRAY16BE    \

  159.         || (x)==PIX_FMT_GRAY16LE    \

  160.         || (x)==PIX_FMT_GRAY8       \

  161.         || (x)==PIX_FMT_YUV410P     \

  162.         || (x)==PIX_FMT_YUV440P     \

  163.         || (x)==PIX_FMT_YUV420P16LE   \

  164.         || (x)==PIX_FMT_YUV422P16LE   \

  165.         || (x)==PIX_FMT_YUV444P16LE   \

  166.         || (x)==PIX_FMT_YUV420P16BE   \

  167.         || (x)==PIX_FMT_YUV422P16BE   \

  168.         || (x)==PIX_FMT_YUV444P16BE   \

  169.     )

  170. #define isPacked(x)         (       \

  171.            (x)==PIX_FMT_PAL8        \

  172.         || (x)==PIX_FMT_YUYV422     \

  173.         || (x)==PIX_FMT_UYVY422     \

  174.         || isRGB(x)                 \

  175.         || isBGR(x)                 \

  176.     )

  177. #define usePal(x)           (       \

  178.            (x)==PIX_FMT_PAL8        \

  179.         || (x)==PIX_FMT_BGR4_BYTE   \

  180.         || (x)==PIX_FMT_RGB4_BYTE   \

  181.         || (x)==PIX_FMT_BGR8        \

  182.         || (x)==PIX_FMT_RGB8        \

  183.     )

  184. 

  185. #define RGB2YUV_SHIFT 15

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

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

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

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

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

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

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

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

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

  195. 

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

  197. 

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

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

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

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

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

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

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

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

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

  207. };

  208. 

  209. /*

  210. NOTES

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

  212. 

  213. TODO

  214. more intelligent misalignment avoidance for the horizontal scaler

  215. write special vertical cubic upscale version

  216. optimize C code (YV12 / minmax)

  217. add support for packed pixel YUV input & output

  218. add support for Y8 output

  219. optimize BGR24 & BGR32

  220. add BGR4 output support

  221. write special BGR->BGR scaler

  222. */

  223. 

  224. #if ARCH_X86 && CONFIG_GPL

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

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

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

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

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

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

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

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

  233. 

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

  235.         0x0103010301030103LL,

  236.         0x0200020002000200LL,};

  237. 

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

  239.         0x0602060206020602LL,

  240.         0x0004000400040004LL,};

  241. 

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

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

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

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

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

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

  248. 

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

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

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

  252. 

  253. #ifdef FAST_BGR2YV12

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

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

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

  257. #else

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

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

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

  261. #endif /* FAST_BGR2YV12 */

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

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

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

  265. 

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

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

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

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

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

  271. 

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

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

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

  275. };

  276. 

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

  278. 

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

  280. 

  281. // clipping helper table for C implementations:

  282. static unsigned char clip_table[768];

  283. 

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

  285. 

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

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

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

  289. };

  290. 

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

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

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

  294. };

  295. 

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

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

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

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

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

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

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

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

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

  305. };

  306. 

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

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

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

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

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

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

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

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

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

  316. };

  317. 

  318. #if 1

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

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

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

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

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

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

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

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

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

  328. };

  329. #elif 1

  330. // tries to correct a gamma of 1.5

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

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

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

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

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

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

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

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

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

  340. };

  341. #elif 1

  342. // tries to correct a gamma of 2.0

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

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

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

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

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

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

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

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

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

  352. };

  353. #else

  354. // tries to correct a gamma of 2.5

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

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

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

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

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

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

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

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

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

  364. };

  365. #endif

  366. 

  367. const char *sws_format_name(enum PixelFormat format)

  368. {

  369.     switch (format) {

  370.     case PIX_FMT_YUV420P:

  371.         return "yuv420p";

  372.     case PIX_FMT_YUVA420P:

  373.         return "yuva420p";

  374.     case PIX_FMT_YUYV422:

  375.         return "yuyv422";

  376.     case PIX_FMT_RGB24:

  377.         return "rgb24";

  378.     case PIX_FMT_BGR24:

  379.         return "bgr24";

  380.     case PIX_FMT_YUV422P:

  381.         return "yuv422p";

  382.     case PIX_FMT_YUV444P:

  383.         return "yuv444p";

  384.     case PIX_FMT_RGB32:

  385.         return "rgb32";

  386.     case PIX_FMT_YUV410P:

  387.         return "yuv410p";

  388.     case PIX_FMT_YUV411P:

  389.         return "yuv411p";

  390.     case PIX_FMT_RGB565:

  391.         return "rgb565";

  392.     case PIX_FMT_RGB555:

  393.         return "rgb555";

  394.     case PIX_FMT_GRAY16BE:

  395.         return "gray16be";

  396.     case PIX_FMT_GRAY16LE:

  397.         return "gray16le";

  398.     case PIX_FMT_GRAY8:

  399.         return "gray8";

  400.     case PIX_FMT_MONOWHITE:

  401.         return "mono white";

  402.     case PIX_FMT_MONOBLACK:

  403.         return "mono black";

  404.     case PIX_FMT_PAL8:

  405.         return "Palette";

  406.     case PIX_FMT_YUVJ420P:

  407.         return "yuvj420p";

  408.     case PIX_FMT_YUVJ422P:

  409.         return "yuvj422p";

  410.     case PIX_FMT_YUVJ444P:

  411.         return "yuvj444p";

  412.     case PIX_FMT_XVMC_MPEG2_MC:

  413.         return "xvmc_mpeg2_mc";

  414.     case PIX_FMT_XVMC_MPEG2_IDCT:

  415.         return "xvmc_mpeg2_idct";

  416.     case PIX_FMT_UYVY422:

  417.         return "uyvy422";

  418.     case PIX_FMT_UYYVYY411:

  419.         return "uyyvyy411";

  420.     case PIX_FMT_RGB32_1:

  421.         return "rgb32x";

  422.     case PIX_FMT_BGR32_1:

  423.         return "bgr32x";

  424.     case PIX_FMT_BGR32:

  425.         return "bgr32";

  426.     case PIX_FMT_BGR565:

  427.         return "bgr565";

  428.     case PIX_FMT_BGR555:

  429.         return "bgr555";

  430.     case PIX_FMT_BGR8:

  431.         return "bgr8";

  432.     case PIX_FMT_BGR4:

  433.         return "bgr4";

  434.     case PIX_FMT_BGR4_BYTE:

  435.         return "bgr4 byte";

  436.     case PIX_FMT_RGB8:

  437.         return "rgb8";

  438.     case PIX_FMT_RGB4:

  439.         return "rgb4";

  440.     case PIX_FMT_RGB4_BYTE:

  441.         return "rgb4 byte";

  442.     case PIX_FMT_RGB48BE:

  443.         return "rgb48be";

  444.     case PIX_FMT_RGB48LE:

  445.         return "rgb48le";

  446.     case PIX_FMT_NV12:

  447.         return "nv12";

  448.     case PIX_FMT_NV21:

  449.         return "nv21";

  450.     case PIX_FMT_YUV440P:

  451.         return "yuv440p";

  452.     case PIX_FMT_VDPAU_H264:

  453.         return "vdpau_h264";

  454.     case PIX_FMT_VDPAU_MPEG1:

  455.         return "vdpau_mpeg1";

  456.     case PIX_FMT_VDPAU_MPEG2:

  457.         return "vdpau_mpeg2";

  458.     case PIX_FMT_VDPAU_WMV3:

  459.         return "vdpau_wmv3";

  460.     case PIX_FMT_VDPAU_VC1:

  461.         return "vdpau_vc1";

  462.     case PIX_FMT_VDPAU_MPEG4:

  463.         return "vdpau_mpeg4";

  464.     case PIX_FMT_YUV420P16LE:

  465.         return "yuv420p16le";

  466.     case PIX_FMT_YUV422P16LE:

  467.         return "yuv422p16le";

  468.     case PIX_FMT_YUV444P16LE:

  469.         return "yuv444p16le";

  470.     case PIX_FMT_YUV420P16BE:

  471.         return "yuv420p16be";

  472.     case PIX_FMT_YUV422P16BE:

  473.         return "yuv422p16be";

  474.     case PIX_FMT_YUV444P16BE:

  475.         return "yuv444p16be";

  476.     default:

  477.         return "Unknown format";

  478.     }

  479. }

  480. 

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

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

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

  484.                                                     int dstW, int chrDstW, int big_endian)

  485. {

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

  487.     int i;

  488. 

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

  490.         int val = 1 << 10;

  491.         int j;

  492. 

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

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

  495. 

  496.         if (big_endian) {

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

  498.         } else {

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

  500.         }

  501.     }

  502. 

  503.     if (uDest) {

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

  505.             int u = 1 << 10;

  506.             int v = 1 << 10;

  507.             int j;

  508. 

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

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

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

  512.             }

  513. 

  514.             if (big_endian) {

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

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

  517.             } else {

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

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

  520.             }

  521.         }

  522.     }

  523. 

  524.     if (CONFIG_SWSCALE_ALPHA && aDest) {

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

  526.             int val = 1 << 10;

  527.             int j;

  528. 

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

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

  531. 

  532.             if (big_endian) {

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

  534.             } else {

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

  536.             }

  537.         }

  538.     }

  539. }

  540. 

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

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

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

  544.                                  enum PixelFormat dstFormat)

  545. {

  546.     if (isBE(dstFormat)) {

  547.         yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,

  548.                                chrFilter, chrSrc, chrFilterSize,

  549.                                alpSrc,

  550.                                dest, uDest, vDest, aDest,

  551.                                dstW, chrDstW, 1);

  552.     } else {

  553.         yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,

  554.                                chrFilter, chrSrc, chrFilterSize,

  555.                                alpSrc,

  556.                                dest, uDest, vDest, aDest,

  557.                                dstW, chrDstW, 0);

  558.     }

  559. }

  560. 

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

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

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

  564. {

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

  566.     int i;

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

  568.         int val=1<<18;

  569.         int j;

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

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

  572. 

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

  574.     }

  575. 

  576.     if (uDest)

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

  578.             int u=1<<18;

  579.             int v=1<<18;

  580.             int j;

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

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

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

  584.             }

  585. 

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

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

  588.         }

  589. 

  590.     if (CONFIG_SWSCALE_ALPHA && aDest)

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

  592.             int val=1<<18;

  593.             int j;

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

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

  596. 

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

  598.         }

  599. 

  600. }

  601. 

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

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

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

  605. {

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

  607.     int i;

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

  609.         int val=1<<18;

  610.         int j;

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

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

  613. 

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

  615.     }

  616. 

  617.     if (!uDest)

  618.         return;

  619. 

  620.     if (dstFormat == PIX_FMT_NV12)

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

  622.             int u=1<<18;

  623.             int v=1<<18;

  624.             int j;

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

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

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

  628.             }

  629. 

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

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

  632.         }

  633.     else

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

  635.             int u=1<<18;

  636.             int v=1<<18;

  637.             int j;

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

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

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

  641.             }

  642. 

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

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

  645.         }

  646. }

  647. 

  648. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \

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

  650.         int j;\

  651.         int Y1 = 1<<18;\

  652.         int Y2 = 1<<18;\

  653.         int U  = 1<<18;\

  654.         int V  = 1<<18;\

  655.         int av_unused A1, A2;\

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

  657.         const int i2= 2*i;\

  658.         \

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

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

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

  662.         }\

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

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

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

  666.         }\

  667.         Y1>>=19;\

  668.         Y2>>=19;\

  669.         U >>=19;\

  670.         V >>=19;\

  671.         if (alpha) {\

  672.             A1 = 1<<18;\

  673.             A2 = 1<<18;\

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

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

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

  677.             }\

  678.             A1>>=19;\

  679.             A2>>=19;\

  680.         }\

  681. 

  682. #define YSCALE_YUV_2_PACKEDX_C(type,alpha) \

  683.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\

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

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

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

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

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

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

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

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

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

  693.         }\

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

  695.             A1=av_clip_uint8(A1);\

  696.             A2=av_clip_uint8(A2);\

  697.         }

  698. 

  699. #define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \

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

  701.         int j;\

  702.         int Y = 0;\

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

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

  705.         int av_unused A;\

  706.         int R,G,B;\

  707.         \

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

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

  710.         }\

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

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

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

  714.         }\

  715.         Y >>=10;\

  716.         U >>=10;\

  717.         V >>=10;\

  718.         if (alpha) {\

  719.             A = rnd;\

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

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

  722.             A >>=19;\

  723.             if (A&256)\

  724.                 A = av_clip_uint8(A);\

  725.         }\

  726. 

  727. #define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \

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

  729.         Y-= c->yuv2rgb_y_offset;\

  730.         Y*= c->yuv2rgb_y_coeff;\

  731.         Y+= rnd;\

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

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

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

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

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

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

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

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

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

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

  742.         }\

  743. 

  744. 

  745. #define YSCALE_YUV_2_GRAY16_C \

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

  747.         int j;\

  748.         int Y1 = 1<<18;\

  749.         int Y2 = 1<<18;\

  750.         int U  = 1<<18;\

  751.         int V  = 1<<18;\

  752.         \

  753.         const int i2= 2*i;\

  754.         \

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

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

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

  758.         }\

  759.         Y1>>=11;\

  760.         Y2>>=11;\

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

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

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

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

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

  766.         }

  767. 

  768. #define YSCALE_YUV_2_RGBX_C(type,alpha) \

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

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

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

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

  773. 

  774. #define YSCALE_YUV_2_PACKED2_C(type,alpha)   \

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

  776.         const int i2= 2*i;       \

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

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

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

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

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

  782.         int av_unused A1, A2;                                         \

  783.         if (alpha) {\

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

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

  786.         }\

  787. 

  788. #define YSCALE_YUV_2_GRAY16_2_C   \

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

  790.         const int i2= 2*i;       \

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

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

  793. 

  794. #define YSCALE_YUV_2_RGB2_C(type,alpha) \

  795.     YSCALE_YUV_2_PACKED2_C(type,alpha)\

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

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

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

  799. 

  800. #define YSCALE_YUV_2_PACKED1_C(type,alpha) \

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

  802.         const int i2= 2*i;\

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

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

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

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

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

  808.         int av_unused A1, A2;\

  809.         if (alpha) {\

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

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

  812.         }\

  813. 

  814. #define YSCALE_YUV_2_GRAY16_1_C \

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

  816.         const int i2= 2*i;\

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

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

  819. 

  820. #define YSCALE_YUV_2_RGB1_C(type,alpha) \

  821.     YSCALE_YUV_2_PACKED1_C(type,alpha)\

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

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

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

  825. 

  826. #define YSCALE_YUV_2_PACKED1B_C(type,alpha) \

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

  828.         const int i2= 2*i;\

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

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

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

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

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

  834.         int av_unused A1, A2;\

  835.         if (alpha) {\

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

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

  838.         }\

  839. 

  840. #define YSCALE_YUV_2_RGB1B_C(type,alpha) \

  841.     YSCALE_YUV_2_PACKED1B_C(type,alpha)\

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

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

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

  845. 

  846. #define YSCALE_YUV_2_MONO2_C \

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

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

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

  850.         int acc;\

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

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

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

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

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

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

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

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

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

  860.         dest++;\

  861.     }\

  862. 

  863. 

  864. #define YSCALE_YUV_2_MONOX_C \

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

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

  867.     int acc=0;\

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

  869.         int j;\

  870.         int Y1=1<<18;\

  871.         int Y2=1<<18;\

  872. \

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

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

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

  876.         }\

  877.         Y1>>=19;\

  878.         Y2>>=19;\

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

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

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

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

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

  884.         }\

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

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

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

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

  889.             dest++;\

  890.         }\

  891.     }

  892. 

  893. 

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

  895.     switch(c->dstFormat) {\

  896.     case PIX_FMT_RGB48BE:\

  897.     case PIX_FMT_RGB48LE:\

  898.         func(uint8_t,0)\

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

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

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

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

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

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

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

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

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

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

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

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

  911.             dest+=12;\

  912.         }\

  913.         break;\

  914.     case PIX_FMT_RGBA:\

  915.     case PIX_FMT_BGRA:\

  916.         if (CONFIG_SMALL) {\

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

  918.             func(uint32_t,needAlpha)\

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

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

  921.             }\

  922.         } else {\

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

  924.                 func(uint32_t,1)\

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

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

  927.                 }\

  928.             } else {\

  929.                 func(uint32_t,0)\

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

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

  932.                 }\

  933.             }\

  934.         }\

  935.         break;\

  936.     case PIX_FMT_ARGB:\

  937.     case PIX_FMT_ABGR:\

  938.         if (CONFIG_SMALL) {\

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

  940.             func(uint32_t,needAlpha)\

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

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

  943.             }\

  944.         } else {\

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

  946.                 func(uint32_t,1)\

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

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

  949.                 }\

  950.             } else {\

  951.                 func(uint32_t,0)\

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

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

  954.                 }\

  955.             }\

  956.         }                \

  957.         break;\

  958.     case PIX_FMT_RGB24:\

  959.         func(uint8_t,0)\

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

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

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

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

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

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

  966.             dest+=6;\

  967.         }\

  968.         break;\

  969.     case PIX_FMT_BGR24:\

  970.         func(uint8_t,0)\

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

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

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

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

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

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

  977.             dest+=6;\

  978.         }\

  979.         break;\

  980.     case PIX_FMT_RGB565:\

  981.     case PIX_FMT_BGR565:\

  982.         {\

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

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

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

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

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

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

  989.             func(uint16_t,0)\

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

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

  992.             }\

  993.         }\

  994.         break;\

  995.     case PIX_FMT_RGB555:\

  996.     case PIX_FMT_BGR555:\

  997.         {\

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

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

  1000.             const int db1= dither_2x2_8[(y&1)^1][0];\

  1001.             const int dr2= dither_2x2_8[y&1    ][1];\

  1002.             const int dg2= dither_2x2_8[y&1    ][0];\

  1003.             const int db2= dither_2x2_8[(y&1)^1][1];\

  1004.             func(uint16_t,0)\

  1005.                 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\

  1006.                 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\

  1007.             }\

  1008.         }\

  1009.         break;\

  1010.     case PIX_FMT_RGB8:\

  1011.     case PIX_FMT_BGR8:\

  1012.         {\

  1013.             const uint8_t * const d64= dither_8x8_73[y&7];\

  1014.             const uint8_t * const d32= dither_8x8_32[y&7];\

  1015.             func(uint8_t,0)\

  1016.                 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\

  1017.                 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\

  1018.             }\

  1019.         }\

  1020.         break;\

  1021.     case PIX_FMT_RGB4:\

  1022.     case PIX_FMT_BGR4:\

  1023.         {\

  1024.             const uint8_t * const d64= dither_8x8_73 [y&7];\

  1025.             const uint8_t * const d128=dither_8x8_220[y&7];\

  1026.             func(uint8_t,0)\

  1027.                 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\

  1028.                                  + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\

  1029.             }\

  1030.         }\

  1031.         break;\

  1032.     case PIX_FMT_RGB4_BYTE:\

  1033.     case PIX_FMT_BGR4_BYTE:\

  1034.         {\

  1035.             const uint8_t * const d64= dither_8x8_73 [y&7];\

  1036.             const uint8_t * const d128=dither_8x8_220[y&7];\

  1037.             func(uint8_t,0)\

  1038.                 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\

  1039.                 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\

  1040.             }\

  1041.         }\

  1042.         break;\

  1043.     case PIX_FMT_MONOBLACK:\

  1044.     case PIX_FMT_MONOWHITE:\

  1045.         {\

  1046.             func_monoblack\

  1047.         }\

  1048.         break;\

  1049.     case PIX_FMT_YUYV422:\

  1050.         func2\

  1051.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  1052.             ((uint8_t*)dest)[2*i2+1]= U;\

  1053.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  1054.             ((uint8_t*)dest)[2*i2+3]= V;\

  1055.         }                \

  1056.         break;\

  1057.     case PIX_FMT_UYVY422:\

  1058.         func2\

  1059.             ((uint8_t*)dest)[2*i2+0]= U;\

  1060.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  1061.             ((uint8_t*)dest)[2*i2+2]= V;\

  1062.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  1063.         }                \

  1064.         break;\

  1065.     case PIX_FMT_GRAY16BE:\

  1066.         func_g16\

  1067.             ((uint8_t*)dest)[2*i2+0]= Y1>>8;\

  1068.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  1069.             ((uint8_t*)dest)[2*i2+2]= Y2>>8;\

  1070.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  1071.         }                \

  1072.         break;\

  1073.     case PIX_FMT_GRAY16LE:\

  1074.         func_g16\

  1075.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  1076.             ((uint8_t*)dest)[2*i2+1]= Y1>>8;\

  1077.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  1078.             ((uint8_t*)dest)[2*i2+3]= Y2>>8;\

  1079.         }                \

  1080.         break;\

  1081.     }\

  1082. 

  1083. 

  1084. static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  1085.                                   const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  1086.                                   const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  1087. {

  1088.     int i;

  1089.     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)

  1090. }

  1091. 

  1092. static inline void yuv2rgbXinC_full(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  1093.                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  1094.                                     const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  1095. {

  1096.     int i;

  1097.     int step= fmt_depth(c->dstFormat)/8;

  1098.     int aidx= 3;

  1099. 

  1100.     switch(c->dstFormat) {

  1101.     case PIX_FMT_ARGB:

  1102.         dest++;

  1103.         aidx= 0;

  1104.     case PIX_FMT_RGB24:

  1105.         aidx--;

  1106.     case PIX_FMT_RGBA:

  1107.         if (CONFIG_SMALL) {

  1108.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1109.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1110.                 dest[aidx]= needAlpha ? A : 255;

  1111.                 dest[0]= R>>22;

  1112.                 dest[1]= G>>22;

  1113.                 dest[2]= B>>22;

  1114.                 dest+= step;

  1115.             }

  1116.         } else {

  1117.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  1118.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1119.                     dest[aidx]= A;

  1120.                     dest[0]= R>>22;

  1121.                     dest[1]= G>>22;

  1122.                     dest[2]= B>>22;

  1123.                     dest+= step;

  1124.                 }

  1125.             } else {

  1126.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1127.                     dest[aidx]= 255;

  1128.                     dest[0]= R>>22;

  1129.                     dest[1]= G>>22;

  1130.                     dest[2]= B>>22;

  1131.                     dest+= step;

  1132.                 }

  1133.             }

  1134.         }

  1135.         break;

  1136.     case PIX_FMT_ABGR:

  1137.         dest++;

  1138.         aidx= 0;

  1139.     case PIX_FMT_BGR24:

  1140.         aidx--;

  1141.     case PIX_FMT_BGRA:

  1142.         if (CONFIG_SMALL) {

  1143.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1144.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1145.                 dest[aidx]= needAlpha ? A : 255;

  1146.                 dest[0]= B>>22;

  1147.                 dest[1]= G>>22;

  1148.                 dest[2]= R>>22;

  1149.                 dest+= step;

  1150.             }

  1151.         } else {

  1152.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  1153.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1154.                     dest[aidx]= A;

  1155.                     dest[0]= B>>22;

  1156.                     dest[1]= G>>22;

  1157.                     dest[2]= R>>22;

  1158.                     dest+= step;

  1159.                 }

  1160.             } else {

  1161.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1162.                     dest[aidx]= 255;

  1163.                     dest[0]= B>>22;

  1164.                     dest[1]= G>>22;

  1165.                     dest[2]= R>>22;

  1166.                     dest+= step;

  1167.                 }

  1168.             }

  1169.         }

  1170.         break;

  1171.     default:

  1172.         assert(0);

  1173.     }

  1174. }

  1175. 

  1176. static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val)

  1177. {

  1178.     int i;

  1179.     uint8_t *ptr = plane + stride*y;

  1180.     for (i=0; i<height; i++) {

  1181.         memset(ptr, val, width);

  1182.         ptr += stride;

  1183.     }

  1184. }

  1185. 

  1186. static inline void rgb48ToY(uint8_t *dst, const uint8_t *src, int width)

  1187. {

  1188.     int i;

  1189.     for (i = 0; i < width; i++) {

  1190.         int r = src[i*6+0];

  1191.         int g = src[i*6+2];

  1192.         int b = src[i*6+4];

  1193. 

  1194.         dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1195.     }

  1196. }

  1197. 

  1198. static inline void rgb48ToUV(uint8_t *dstU, uint8_t *dstV,

  1199.                              uint8_t *src1, uint8_t *src2, int width)

  1200. {

  1201.     int i;

  1202.     assert(src1==src2);

  1203.     for (i = 0; i < width; i++) {

  1204.         int r = src1[6*i + 0];

  1205.         int g = src1[6*i + 2];

  1206.         int b = src1[6*i + 4];

  1207. 

  1208.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1209.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1210.     }

  1211. }

  1212. 

  1213. static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1214.                                   uint8_t *src1, uint8_t *src2, int width)

  1215. {

  1216.     int i;

  1217.     assert(src1==src2);

  1218.     for (i = 0; i < width; i++) {

  1219.         int r= src1[12*i + 0] + src1[12*i + 6];

  1220.         int g= src1[12*i + 2] + src1[12*i + 8];

  1221.         int b= src1[12*i + 4] + src1[12*i + 10];

  1222. 

  1223.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1224.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1225.     }

  1226. }

  1227. 

  1228. #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\

  1229. static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\

  1230. {\

  1231.     int i;\

  1232.     for (i=0; i<width; i++) {\

  1233.         int b= (((const type*)src)[i]>>shb)&maskb;\

  1234.         int g= (((const type*)src)[i]>>shg)&maskg;\

  1235.         int r= (((const type*)src)[i]>>shr)&maskr;\

  1236. \

  1237.         dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\

  1238.     }\

  1239. }

  1240. 

  1241. BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1242. BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1243. BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)

  1244. BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)

  1245. BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)

  1246. BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)

  1247. 

  1248. static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1249. {

  1250.     int i;

  1251.     for (i=0; i<width; i++) {

  1252.         dst[i]= src[4*i];

  1253.     }

  1254. }

  1255. 

  1256. #define BGR2UV(type, name, shr, shg, shb, maska, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S)\

  1257. static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1258. {\

  1259.     int i;\

  1260.     for (i=0; i<width; i++) {\

  1261.         int b= (((const type*)src)[i]&maskb)>>shb;\

  1262.         int g= (((const type*)src)[i]&maskg)>>shg;\

  1263.         int r= (((const type*)src)[i]&maskr)>>shr;\

  1264. \

  1265.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\

  1266.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\

  1267.     }\

  1268. }\

  1269. static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1270. {\

  1271.     int i;\

  1272.     for (i=0; i<width; i++) {\

  1273.         int pix0= ((const type*)src)[2*i+0];\

  1274.         int pix1= ((const type*)src)[2*i+1];\

  1275.         int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\

  1276.         int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\

  1277.         int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\

  1278.         g&= maskg|(2*maskg);\

  1279. \

  1280.         g>>=shg;\

  1281. \

  1282.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\

  1283.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\

  1284.     }\

  1285. }

  1286. 

  1287. BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0xFF000000, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1288. BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0xFF000000,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1289. BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0,          0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)

  1290. BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0,          0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)

  1291. BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0,          0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)

  1292. BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0,          0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)

  1293. 

  1294. static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)

  1295. {

  1296.     int i;

  1297.     for (i=0; i<width; i++) {

  1298.         int d= src[i];

  1299. 

  1300.         dst[i]= pal[d] & 0xFF;

  1301.     }

  1302. }

  1303. 

  1304. static inline void palToUV(uint8_t *dstU, uint8_t *dstV,

  1305.                            const uint8_t *src1, const uint8_t *src2,

  1306.                            long width, uint32_t *pal)

  1307. {

  1308.     int i;

  1309.     assert(src1 == src2);

  1310.     for (i=0; i<width; i++) {

  1311.         int p= pal[src1[i]];

  1312. 

  1313.         dstU[i]= p>>8;

  1314.         dstV[i]= p>>16;

  1315.     }

  1316. }

  1317. 

  1318. static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1319. {

  1320.     int i, j;

  1321.     for (i=0; i<width/8; i++) {

  1322.         int d= ~src[i];

  1323.         for(j=0; j<8; j++)

  1324.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1325.     }

  1326. }

  1327. 

  1328. static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1329. {

  1330.     int i, j;

  1331.     for (i=0; i<width/8; i++) {

  1332.         int d= src[i];

  1333.         for(j=0; j<8; j++)

  1334.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1335.     }

  1336. }

  1337. 

  1338. 

  1339. //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one

  1340. //Plain C versions

  1341. #if ((!HAVE_MMX || !CONFIG_GPL) && !HAVE_ALTIVEC) || CONFIG_RUNTIME_CPUDETECT

  1342. #define COMPILE_C

  1343. #endif

  1344. 

  1345. #if ARCH_PPC

  1346. #if HAVE_ALTIVEC || CONFIG_RUNTIME_CPUDETECT

  1347. #define COMPILE_ALTIVEC

  1348. #endif

  1349. #endif //ARCH_PPC

  1350. 

  1351. #if ARCH_X86

  1352. 

  1353. #if ((HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1354. #define COMPILE_MMX

  1355. #endif

  1356. 

  1357. #if (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1358. #define COMPILE_MMX2

  1359. #endif

  1360. 

  1361. #if ((HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1362. #define COMPILE_3DNOW

  1363. #endif

  1364. #endif //ARCH_X86

  1365. 

  1366. #define COMPILE_TEMPLATE_MMX 0

  1367. #define COMPILE_TEMPLATE_MMX2 0

  1368. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1369. #define COMPILE_TEMPLATE_ALTIVEC 0

  1370. 

  1371. #ifdef COMPILE_C

  1372. #define RENAME(a) a ## _C

  1373. #include "swscale_template.c"

  1374. #endif

  1375. 

  1376. #ifdef COMPILE_ALTIVEC

  1377. #undef RENAME

  1378. #undef COMPILE_TEMPLATE_ALTIVEC

  1379. #define COMPILE_TEMPLATE_ALTIVEC 1

  1380. #define RENAME(a) a ## _altivec

  1381. #include "swscale_template.c"

  1382. #endif

  1383. 

  1384. #if ARCH_X86

  1385. 

  1386. //MMX versions

  1387. #ifdef COMPILE_MMX

  1388. #undef RENAME

  1389. #undef COMPILE_TEMPLATE_MMX

  1390. #undef COMPILE_TEMPLATE_MMX2

  1391. #undef COMPILE_TEMPLATE_AMD3DNOW

  1392. #define COMPILE_TEMPLATE_MMX 1

  1393. #define COMPILE_TEMPLATE_MMX2 0

  1394. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1395. #define RENAME(a) a ## _MMX

  1396. #include "swscale_template.c"

  1397. #endif

  1398. 

  1399. //MMX2 versions

  1400. #ifdef COMPILE_MMX2

  1401. #undef RENAME

  1402. #undef COMPILE_TEMPLATE_MMX

  1403. #undef COMPILE_TEMPLATE_MMX2

  1404. #undef COMPILE_TEMPLATE_AMD3DNOW

  1405. #define COMPILE_TEMPLATE_MMX 1

  1406. #define COMPILE_TEMPLATE_MMX2 1

  1407. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1408. #define RENAME(a) a ## _MMX2

  1409. #include "swscale_template.c"

  1410. #endif

  1411. 

  1412. //3DNOW versions

  1413. #ifdef COMPILE_3DNOW

  1414. #undef RENAME

  1415. #undef COMPILE_TEMPLATE_MMX

  1416. #undef COMPILE_TEMPLATE_MMX2

  1417. #undef COMPILE_TEMPLATE_AMD3DNOW

  1418. #define COMPILE_TEMPLATE_MMX 1

  1419. #define COMPILE_TEMPLATE_MMX2 0

  1420. #define COMPILE_TEMPLATE_AMD3DNOW 1

  1421. #define RENAME(a) a ## _3DNow

  1422. #include "swscale_template.c"

  1423. #endif

  1424. 

  1425. #endif //ARCH_X86

  1426. 

  1427. static double getSplineCoeff(double a, double b, double c, double d, double dist)

  1428. {

  1429. //    printf("%f %f %f %f %f\n", a,b,c,d,dist);

  1430.     if (dist<=1.0) return ((d*dist + c)*dist + b)*dist +a;

  1431.     else           return getSplineCoeff(        0.0,

  1432.                                           b+ 2.0*c + 3.0*d,

  1433.                                                  c + 3.0*d,

  1434.                                          -b- 3.0*c - 6.0*d,

  1435.                                          dist-1.0);

  1436. }

  1437. 

  1438. static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,

  1439.                              int srcW, int dstW, int filterAlign, int one, int flags,

  1440.                              SwsVector *srcFilter, SwsVector *dstFilter, double param[2])

  1441. {

  1442.     int i;

  1443.     int filterSize;

  1444.     int filter2Size;

  1445.     int minFilterSize;

  1446.     int64_t *filter=NULL;

  1447.     int64_t *filter2=NULL;

  1448.     const int64_t fone= 1LL<<54;

  1449.     int ret= -1;

  1450. #if ARCH_X86

  1451.     if (flags & SWS_CPU_CAPS_MMX)

  1452.         __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)

  1453. #endif

  1454. 

  1455.     // NOTE: the +1 is for the MMX scaler which reads over the end

  1456.     FF_ALLOC_OR_GOTO(NULL, *filterPos, (dstW+1)*sizeof(int16_t), fail);

  1457. 

  1458.     if (FFABS(xInc - 0x10000) <10) { // unscaled

  1459.         int i;

  1460.         filterSize= 1;

  1461.         FF_ALLOCZ_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail);

  1462. 

  1463.         for (i=0; i<dstW; i++) {

  1464.             filter[i*filterSize]= fone;

  1465.             (*filterPos)[i]=i;

  1466.         }

  1467. 

  1468.     } else if (flags&SWS_POINT) { // lame looking point sampling mode

  1469.         int i;

  1470.         int xDstInSrc;

  1471.         filterSize= 1;

  1472.         FF_ALLOC_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail);

  1473. 

  1474.         xDstInSrc= xInc/2 - 0x8000;

  1475.         for (i=0; i<dstW; i++) {

  1476.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1477. 

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

  1479.             filter[i]= fone;

  1480.             xDstInSrc+= xInc;

  1481.         }

  1482.     } else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) { // bilinear upscale

  1483.         int i;

  1484.         int xDstInSrc;

  1485.         filterSize= 2;

  1486.         FF_ALLOC_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail);

  1487. 

  1488.         xDstInSrc= xInc/2 - 0x8000;

  1489.         for (i=0; i<dstW; i++) {

  1490.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1491.             int j;

  1492. 

  1493.             (*filterPos)[i]= xx;

  1494.             //bilinear upscale / linear interpolate / area averaging

  1495.             for (j=0; j<filterSize; j++) {

  1496.                 int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);

  1497.                 if (coeff<0) coeff=0;

  1498.                 filter[i*filterSize + j]= coeff;

  1499.                 xx++;

  1500.             }

  1501.             xDstInSrc+= xInc;

  1502.         }

  1503.     } else {

  1504.         int xDstInSrc;

  1505.         int sizeFactor;

  1506. 

  1507.         if      (flags&SWS_BICUBIC)      sizeFactor=  4;

  1508.         else if (flags&SWS_X)            sizeFactor=  8;

  1509.         else if (flags&SWS_AREA)         sizeFactor=  1; //downscale only, for upscale it is bilinear

  1510.         else if (flags&SWS_GAUSS)        sizeFactor=  8;   // infinite ;)

  1511.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;

  1512.         else if (flags&SWS_SINC)         sizeFactor= 20; // infinite ;)

  1513.         else if (flags&SWS_SPLINE)       sizeFactor= 20;  // infinite ;)

  1514.         else if (flags&SWS_BILINEAR)     sizeFactor=  2;

  1515.         else {

  1516.             sizeFactor= 0; //GCC warning killer

  1517.             assert(0);

  1518.         }

  1519. 

  1520.         if (xInc <= 1<<16)      filterSize= 1 + sizeFactor; // upscale

  1521.         else                    filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;

  1522. 

  1523.         if (filterSize > srcW-2) filterSize=srcW-2;

  1524. 

  1525.         FF_ALLOC_OR_GOTO(NULL, filter, dstW*sizeof(*filter)*filterSize, fail);

  1526. 

  1527.         xDstInSrc= xInc - 0x10000;

  1528.         for (i=0; i<dstW; i++) {

  1529.             int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);

  1530.             int j;

  1531.             (*filterPos)[i]= xx;

  1532.             for (j=0; j<filterSize; j++) {

  1533.                 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;

  1534.                 double floatd;

  1535.                 int64_t coeff;

  1536. 

  1537.                 if (xInc > 1<<16)

  1538.                     d= d*dstW/srcW;

  1539.                 floatd= d * (1.0/(1<<30));

  1540. 

  1541.                 if (flags & SWS_BICUBIC) {

  1542.                     int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] :   0) * (1<<24);

  1543.                     int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);

  1544.                     int64_t dd = ( d*d)>>30;

  1545.                     int64_t ddd= (dd*d)>>30;

  1546. 

  1547.                     if      (d < 1LL<<30)

  1548.                         coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);

  1549.                     else if (d < 1LL<<31)

  1550.                         coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);

  1551.                     else

  1552.                         coeff=0.0;

  1553.                     coeff *= fone>>(30+24);

  1554.                 }

  1555. /*                else if (flags & SWS_X) {

  1556.                     double p= param ? param*0.01 : 0.3;

  1557.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1558.                     coeff*= pow(2.0, - p*d*d);

  1559.                 }*/

  1560.                 else if (flags & SWS_X) {

  1561.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1562.                     double c;

  1563. 

  1564.                     if (floatd<1.0)

  1565.                         c = cos(floatd*PI);

  1566.                     else

  1567.                         c=-1.0;

  1568.                     if (c<0.0)      c= -pow(-c, A);

  1569.                     else            c=  pow( c, A);

  1570.                     coeff= (c*0.5 + 0.5)*fone;

  1571.                 } else if (flags & SWS_AREA) {

  1572.                     int64_t d2= d - (1<<29);

  1573.                     if      (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));

  1574.                     else if (d2*xInc <  (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));

  1575.                     else coeff=0.0;

  1576.                     coeff *= fone>>(30+16);

  1577.                 } else if (flags & SWS_GAUSS) {

  1578.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1579.                     coeff = (pow(2.0, - p*floatd*floatd))*fone;

  1580.                 } else if (flags & SWS_SINC) {

  1581.                     coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;

  1582.                 } else if (flags & SWS_LANCZOS) {

  1583.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1584.                     coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;

  1585.                     if (floatd>p) coeff=0;

  1586.                 } else if (flags & SWS_BILINEAR) {

  1587.                     coeff= (1<<30) - d;

  1588.                     if (coeff<0) coeff=0;

  1589.                     coeff *= fone >> 30;

  1590.                 } else if (flags & SWS_SPLINE) {

  1591.                     double p=-2.196152422706632;

  1592.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;

  1593.                 } else {

  1594.                     coeff= 0.0; //GCC warning killer

  1595.                     assert(0);

  1596.                 }

  1597. 

  1598.                 filter[i*filterSize + j]= coeff;

  1599.                 xx++;

  1600.             }

  1601.             xDstInSrc+= 2*xInc;

  1602.         }

  1603.     }

  1604. 

  1605.     /* apply src & dst Filter to filter -> filter2

  1606.        av_free(filter);

  1607.     */

  1608.     assert(filterSize>0);

  1609.     filter2Size= filterSize;

  1610.     if (srcFilter) filter2Size+= srcFilter->length - 1;

  1611.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1612.     assert(filter2Size>0);

  1613.     FF_ALLOCZ_OR_GOTO(NULL, filter2, filter2Size*dstW*sizeof(*filter2), fail);

  1614. 

  1615.     for (i=0; i<dstW; i++) {

  1616.         int j, k;

  1617. 

  1618.         if(srcFilter) {

  1619.             for (k=0; k<srcFilter->length; k++) {

  1620.                 for (j=0; j<filterSize; j++)

  1621.                     filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];

  1622.             }

  1623.         } else {

  1624.             for (j=0; j<filterSize; j++)

  1625.                 filter2[i*filter2Size + j]= filter[i*filterSize + j];

  1626.         }

  1627.         //FIXME dstFilter

  1628. 

  1629.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1630.     }

  1631.     av_freep(&filter);

  1632. 

  1633.     /* try to reduce the filter-size (step1 find size and shift left) */

  1634.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1635.     minFilterSize= 0;

  1636.     for (i=dstW-1; i>=0; i--) {

  1637.         int min= filter2Size;

  1638.         int j;

  1639.         int64_t cutOff=0.0;

  1640. 

  1641.         /* get rid off near zero elements on the left by shifting left */

  1642.         for (j=0; j<filter2Size; j++) {

  1643.             int k;

  1644.             cutOff += FFABS(filter2[i*filter2Size]);

  1645. 

  1646.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1647. 

  1648.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1649.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1650. 

  1651.             // move filter coefficients left

  1652.             for (k=1; k<filter2Size; k++)

  1653.                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1654.             filter2[i*filter2Size + k - 1]= 0;

  1655.             (*filterPos)[i]++;

  1656.         }

  1657. 

  1658.         cutOff=0;

  1659.         /* count near zeros on the right */

  1660.         for (j=filter2Size-1; j>0; j--) {

  1661.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1662. 

  1663.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1664.             min--;

  1665.         }

  1666. 

  1667.         if (min>minFilterSize) minFilterSize= min;

  1668.     }

  1669. 

  1670.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1671.         // we can handle the special case 4,

  1672.         // so we don't want to go to the full 8

  1673.         if (minFilterSize < 5)

  1674.             filterAlign = 4;

  1675. 

  1676.         // We really don't want to waste our time

  1677.         // doing useless computation, so fall back on

  1678.         // the scalar C code for very small filters.

  1679.         // Vectorizing is worth it only if you have a

  1680.         // decent-sized vector.

  1681.         if (minFilterSize < 3)

  1682.             filterAlign = 1;

  1683.     }

  1684. 

  1685.     if (flags & SWS_CPU_CAPS_MMX) {

  1686.         // special case for unscaled vertical filtering

  1687.         if (minFilterSize == 1 && filterAlign == 2)

  1688.             filterAlign= 1;

  1689.     }

  1690. 

  1691.     assert(minFilterSize > 0);

  1692.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1693.     assert(filterSize > 0);

  1694.     filter= av_malloc(filterSize*dstW*sizeof(*filter));

  1695.     if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)

  1696.         goto fail;

  1697.     *outFilterSize= filterSize;

  1698. 

  1699.     if (flags&SWS_PRINT_INFO)

  1700.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1701.     /* try to reduce the filter-size (step2 reduce it) */

  1702.     for (i=0; i<dstW; i++) {

  1703.         int j;

  1704. 

  1705.         for (j=0; j<filterSize; j++) {

  1706.             if (j>=filter2Size) filter[i*filterSize + j]= 0;

  1707.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1708.             if((flags & SWS_BITEXACT) && j>=minFilterSize)

  1709.                 filter[i*filterSize + j]= 0;

  1710.         }

  1711.     }

  1712. 

  1713. 

  1714.     //FIXME try to align filterPos if possible

  1715. 

  1716.     //fix borders

  1717.     for (i=0; i<dstW; i++) {

  1718.         int j;

  1719.         if ((*filterPos)[i] < 0) {

  1720.             // move filter coefficients left to compensate for filterPos

  1721.             for (j=1; j<filterSize; j++) {

  1722.                 int left= FFMAX(j + (*filterPos)[i], 0);

  1723.                 filter[i*filterSize + left] += filter[i*filterSize + j];

  1724.                 filter[i*filterSize + j]=0;

  1725.             }

  1726.             (*filterPos)[i]= 0;

  1727.         }

  1728. 

  1729.         if ((*filterPos)[i] + filterSize > srcW) {

  1730.             int shift= (*filterPos)[i] + filterSize - srcW;

  1731.             // move filter coefficients right to compensate for filterPos

  1732.             for (j=filterSize-2; j>=0; j--) {

  1733.                 int right= FFMIN(j + shift, filterSize-1);

  1734.                 filter[i*filterSize +right] += filter[i*filterSize +j];

  1735.                 filter[i*filterSize +j]=0;

  1736.             }

  1737.             (*filterPos)[i]= srcW - filterSize;

  1738.         }

  1739.     }

  1740. 

  1741.     // Note the +1 is for the MMX scaler which reads over the end

  1742.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1743.     FF_ALLOCZ_OR_GOTO(NULL, *outFilter, *outFilterSize*(dstW+1)*sizeof(int16_t), fail);

  1744. 

  1745.     /* normalize & store in outFilter */

  1746.     for (i=0; i<dstW; i++) {

  1747.         int j;

  1748.         int64_t error=0;

  1749.         int64_t sum=0;

  1750. 

  1751.         for (j=0; j<filterSize; j++) {

  1752.             sum+= filter[i*filterSize + j];

  1753.         }

  1754.         sum= (sum + one/2)/ one;

  1755.         for (j=0; j<*outFilterSize; j++) {

  1756.             int64_t v= filter[i*filterSize + j] + error;

  1757.             int intV= ROUNDED_DIV(v, sum);

  1758.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1759.             error= v - intV*sum;

  1760.         }

  1761.     }

  1762. 

  1763.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1764.     for (i=0; i<*outFilterSize; i++) {

  1765.         int j= dstW*(*outFilterSize);

  1766.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1767.     }

  1768. 

  1769.     ret=0;

  1770. fail:

  1771.     av_free(filter);

  1772.     av_free(filter2);

  1773.     return ret;

  1774. }

  1775. 

  1776. #ifdef COMPILE_MMX2

  1777. static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1778. {

  1779.     uint8_t *fragmentA;

  1780.     x86_reg imm8OfPShufW1A;

  1781.     x86_reg imm8OfPShufW2A;

  1782.     x86_reg fragmentLengthA;

  1783.     uint8_t *fragmentB;

  1784.     x86_reg imm8OfPShufW1B;

  1785.     x86_reg imm8OfPShufW2B;

  1786.     x86_reg fragmentLengthB;

  1787.     int fragmentPos;

  1788. 

  1789.     int xpos, i;

  1790. 

  1791.     // create an optimized horizontal scaling routine

  1792. 

  1793.     //code fragment

  1794. 

  1795.     __asm__ volatile(

  1796.         "jmp                         9f                 \n\t"

  1797.     // Begin

  1798.         "0:                                             \n\t"

  1799.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1800.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1801.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1802.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1803.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1804.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1805.         "1:                                             \n\t"

  1806.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1807.         "2:                                             \n\t"

  1808.         "psubw                    %%mm1, %%mm0          \n\t"

  1809.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1810.         "pmullw                   %%mm3, %%mm0          \n\t"

  1811.         "psllw                       $7, %%mm1          \n\t"

  1812.         "paddw                    %%mm1, %%mm0          \n\t"

  1813. 

  1814.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1815. 

  1816.         "add                         $8, %%"REG_a"      \n\t"

  1817.     // End

  1818.         "9:                                             \n\t"

  1819. //        "int $3                                         \n\t"

  1820.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1821.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1822.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1823.         "dec                         %1                 \n\t"

  1824.         "dec                         %2                 \n\t"

  1825.         "sub                         %0, %1             \n\t"

  1826.         "sub                         %0, %2             \n\t"

  1827.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1828.         "sub                         %0, %3             \n\t"

  1829. 

  1830. 

  1831.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1832.         "=r" (fragmentLengthA)

  1833.     );

  1834. 

  1835.     __asm__ volatile(

  1836.         "jmp                         9f                 \n\t"

  1837.     // Begin

  1838.         "0:                                             \n\t"

  1839.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1840.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1841.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1842.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1843.         "1:                                             \n\t"

  1844.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1845.         "2:                                             \n\t"

  1846.         "psubw                    %%mm1, %%mm0          \n\t"

  1847.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1848.         "pmullw                   %%mm3, %%mm0          \n\t"

  1849.         "psllw                       $7, %%mm1          \n\t"

  1850.         "paddw                    %%mm1, %%mm0          \n\t"

  1851. 

  1852.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1853. 

  1854.         "add                         $8, %%"REG_a"      \n\t"

  1855.     // End

  1856.         "9:                                             \n\t"

  1857. //        "int                       $3                   \n\t"

  1858.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1859.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1860.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1861.         "dec                         %1                 \n\t"

  1862.         "dec                         %2                 \n\t"

  1863.         "sub                         %0, %1             \n\t"

  1864.         "sub                         %0, %2             \n\t"

  1865.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1866.         "sub                         %0, %3             \n\t"

  1867. 

  1868. 

  1869.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1870.         "=r" (fragmentLengthB)

  1871.     );

  1872. 

  1873.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1874.     fragmentPos=0;

  1875. 

  1876.     for (i=0; i<dstW/numSplits; i++) {

  1877.         int xx=xpos>>16;

  1878. 

  1879.         if ((i&3) == 0) {

  1880.             int a=0;

  1881.             int b=((xpos+xInc)>>16) - xx;

  1882.             int c=((xpos+xInc*2)>>16) - xx;

  1883.             int d=((xpos+xInc*3)>>16) - xx;

  1884.             int inc                = (d+1<4);

  1885.             uint8_t *fragment      = (d+1<4) ? fragmentB       : fragmentA;

  1886.             x86_reg imm8OfPShufW1  = (d+1<4) ? imm8OfPShufW1B  : imm8OfPShufW1A;

  1887.             x86_reg imm8OfPShufW2  = (d+1<4) ? imm8OfPShufW2B  : imm8OfPShufW2A;

  1888.             x86_reg fragmentLength = (d+1<4) ? fragmentLengthB : fragmentLengthA;

  1889.             int maxShift= 3-(d+inc);

  1890.             int shift=0;

  1891. 

  1892.             if (filterCode) {

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

  1894.                 filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1895.                 filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1896.                 filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1897.                 filterPos[i/2]= xx;

  1898. 

  1899.                 memcpy(filterCode + fragmentPos, fragment, fragmentLength);

  1900. 

  1901.                 filterCode[fragmentPos + imm8OfPShufW1]=

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

  1903.                 filterCode[fragmentPos + imm8OfPShufW2]=

  1904.                     a | (b<<2) | (c<<4) | (d<<6);

  1905. 

  1906.                 if (i+4-inc>=dstW) shift=maxShift; //avoid overread

  1907.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1908. 

  1909.                 if (shift && i>=shift) {

  1910.                     filterCode[fragmentPos + imm8OfPShufW1]+= 0x55*shift;

  1911.                     filterCode[fragmentPos + imm8OfPShufW2]+= 0x55*shift;

  1912.                     filterPos[i/2]-=shift;

  1913.                 }

  1914.             }

  1915. 

  1916.             fragmentPos+= fragmentLength;

  1917. 

  1918.             if (filterCode)

  1919.                 filterCode[fragmentPos]= RET;

  1920.         }

  1921.         xpos+=xInc;

  1922.     }

  1923.     if (filterCode)

  1924.         filterPos[((i/2)+1)&(~1)]= xpos>>16; // needed to jump to the next part

  1925. 

  1926.     return fragmentPos + 1;

  1927. }

  1928. #endif /* COMPILE_MMX2 */

  1929. 

  1930. static void globalInit(void)

  1931. {

  1932.     // generating tables:

  1933.     int i;

  1934.     for (i=0; i<768; i++) {

  1935.         int c= av_clip_uint8(i-256);

  1936.         clip_table[i]=c;

  1937.     }

  1938. }

  1939. 

  1940. static SwsFunc getSwsFunc(SwsContext *c)

  1941. {

  1942. #if CONFIG_RUNTIME_CPUDETECT

  1943.     int flags = c->flags;

  1944. 

  1945. #if ARCH_X86 && CONFIG_GPL

  1946.     // ordered per speed fastest first

  1947.     if (flags & SWS_CPU_CAPS_MMX2) {

  1948.         sws_init_swScale_MMX2(c);

  1949.         return swScale_MMX2;

  1950.     } else if (flags & SWS_CPU_CAPS_3DNOW) {

  1951.         sws_init_swScale_3DNow(c);

  1952.         return swScale_3DNow;

  1953.     } else if (flags & SWS_CPU_CAPS_MMX) {

  1954.         sws_init_swScale_MMX(c);

  1955.         return swScale_MMX;

  1956.     } else {

  1957.         sws_init_swScale_C(c);

  1958.         return swScale_C;

  1959.     }

  1960. 

  1961. #else

  1962. #if ARCH_PPC

  1963.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1964.         sws_init_swScale_altivec(c);

  1965.         return swScale_altivec;

  1966.     } else {

  1967.         sws_init_swScale_C(c);

  1968.         return swScale_C;

  1969.     }

  1970. #endif

  1971.     sws_init_swScale_C(c);

  1972.     return swScale_C;

  1973. #endif /* ARCH_X86 && CONFIG_GPL */

  1974. #else //CONFIG_RUNTIME_CPUDETECT

  1975. #if   COMPILE_TEMPLATE_MMX2

  1976.     sws_init_swScale_MMX2(c);

  1977.     return swScale_MMX2;

  1978. #elif COMPILE_TEMPLATE_AMD3DNOW

  1979.     sws_init_swScale_3DNow(c);

  1980.     return swScale_3DNow;

  1981. #elif COMPILE_TEMPLATE_MMX

  1982.     sws_init_swScale_MMX(c);

  1983.     return swScale_MMX;

  1984. #elif COMPILE_TEMPLATE_ALTIVEC

  1985.     sws_init_swScale_altivec(c);

  1986.     return swScale_altivec;

  1987. #else

  1988.     sws_init_swScale_C(c);

  1989.     return swScale_C;

  1990. #endif

  1991. #endif //!CONFIG_RUNTIME_CPUDETECT

  1992. }

  1993. 

  1994. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1995.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1996. {

  1997.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1998.     /* Copy Y plane */

  1999.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  2000.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  2001.     else {

  2002.         int i;

  2003.         const uint8_t *srcPtr= src[0];

  2004.         uint8_t *dstPtr= dst;

  2005.         for (i=0; i<srcSliceH; i++) {

  2006.             memcpy(dstPtr, srcPtr, c->srcW);

  2007.             srcPtr+= srcStride[0];

  2008.             dstPtr+= dstStride[0];

  2009.         }

  2010.     }

  2011.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  2012.     if (c->dstFormat == PIX_FMT_NV12)

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

  2014.     else

  2015.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  2016. 

  2017.     return srcSliceH;

  2018. }

  2019. 

  2020. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2021.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2022. {

  2023.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2024. 

  2025.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  2026. 

  2027.     return srcSliceH;

  2028. }

  2029. 

  2030. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2031.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2032. {

  2033.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2034. 

  2035.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  2036. 

  2037.     return srcSliceH;

  2038. }

  2039. 

  2040. static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2041.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2042. {

  2043.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2044. 

  2045.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  2046. 

  2047.     return srcSliceH;

  2048. }

  2049. 

  2050. static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2051.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2052. {

  2053.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2054. 

  2055.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  2056. 

  2057.     return srcSliceH;

  2058. }

  2059. 

  2060. static int YUYV2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2061.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2062. {

  2063.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2064.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  2065.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  2066. 

  2067.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2068. 

  2069.     if (dstParam[3])

  2070.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2071. 

  2072.     return srcSliceH;

  2073. }

  2074. 

  2075. static int YUYV2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2076.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2077. {

  2078.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2079.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  2080.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  2081. 

  2082.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2083. 

  2084.     return srcSliceH;

  2085. }

  2086. 

  2087. static int UYVY2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2088.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2089. {

  2090.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2091.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  2092.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  2093. 

  2094.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2095. 

  2096.     if (dstParam[3])

  2097.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2098. 

  2099.     return srcSliceH;

  2100. }

  2101. 

  2102. static int UYVY2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2103.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2104. {

  2105.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2106.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  2107.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  2108. 

  2109.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2110. 

  2111.     return srcSliceH;

  2112. }

  2113. 

  2114. static int pal2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2115.                           int srcSliceH, uint8_t* dst[], int dstStride[])

  2116. {

  2117.     const enum PixelFormat srcFormat= c->srcFormat;

  2118.     const enum PixelFormat dstFormat= c->dstFormat;

  2119.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  2120.                  const uint8_t *palette)=NULL;

  2121.     int i;

  2122.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2123.     uint8_t *srcPtr= src[0];

  2124. 

  2125.     if (!usePal(srcFormat))

  2126.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2127.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  2128. 

  2129.     switch(dstFormat) {

  2130.     case PIX_FMT_RGB32  : conv = palette8topacked32; break;

  2131.     case PIX_FMT_BGR32  : conv = palette8topacked32; break;

  2132.     case PIX_FMT_BGR32_1: conv = palette8topacked32; break;

  2133.     case PIX_FMT_RGB32_1: conv = palette8topacked32; break;

  2134.     case PIX_FMT_RGB24  : conv = palette8topacked24; break;

  2135.     case PIX_FMT_BGR24  : conv = palette8topacked24; break;

  2136.     default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2137.                     sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2138.     }

  2139. 

  2140. 

  2141.     for (i=0; i<srcSliceH; i++) {

  2142.         conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  2143.         srcPtr+= srcStride[0];

  2144.         dstPtr+= dstStride[0];

  2145.     }

  2146. 

  2147.     return srcSliceH;

  2148. }

  2149. 

  2150. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  2151. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2152.                           int srcSliceH, uint8_t* dst[], int dstStride[])

  2153. {

  2154.     const enum PixelFormat srcFormat= c->srcFormat;

  2155.     const enum PixelFormat dstFormat= c->dstFormat;

  2156.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  2157.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  2158.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  2159.     const int dstId= fmt_depth(dstFormat) >> 2;

  2160.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  2161. 

  2162.     /* BGR -> BGR */

  2163.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  2164.        || (isRGB(srcFormat) && isRGB(dstFormat))) {

  2165.         switch(srcId | (dstId<<4)) {

  2166.         case 0x34: conv= rgb16to15; break;

  2167.         case 0x36: conv= rgb24to15; break;

  2168.         case 0x38: conv= rgb32to15; break;

  2169.         case 0x43: conv= rgb15to16; break;

  2170.         case 0x46: conv= rgb24to16; break;

  2171.         case 0x48: conv= rgb32to16; break;

  2172.         case 0x63: conv= rgb15to24; break;

  2173.         case 0x64: conv= rgb16to24; break;

  2174.         case 0x68: conv= rgb32to24; break;

  2175.         case 0x83: conv= rgb15to32; break;

  2176.         case 0x84: conv= rgb16to32; break;

  2177.         case 0x86: conv= rgb24to32; break;

  2178.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2179.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2180.         }

  2181.     } else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  2182.              || (isRGB(srcFormat) && isBGR(dstFormat))) {

  2183.         switch(srcId | (dstId<<4)) {

  2184.         case 0x33: conv= rgb15tobgr15; break;

  2185.         case 0x34: conv= rgb16tobgr15; break;

  2186.         case 0x36: conv= rgb24tobgr15; break;

  2187.         case 0x38: conv= rgb32tobgr15; break;

  2188.         case 0x43: conv= rgb15tobgr16; break;

  2189.         case 0x44: conv= rgb16tobgr16; break;

  2190.         case 0x46: conv= rgb24tobgr16; break;

  2191.         case 0x48: conv= rgb32tobgr16; break;

  2192.         case 0x63: conv= rgb15tobgr24; break;

  2193.         case 0x64: conv= rgb16tobgr24; break;

  2194.         case 0x66: conv= rgb24tobgr24; break;

  2195.         case 0x68: conv= rgb32tobgr24; break;

  2196.         case 0x83: conv= rgb15tobgr32; break;

  2197.         case 0x84: conv= rgb16tobgr32; break;

  2198.         case 0x86: conv= rgb24tobgr32; break;

  2199.         case 0x88: conv= rgb32tobgr32; break;

  2200.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2201.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2202.         }

  2203.     } else {

  2204.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2205.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  2206.     }

  2207. 

  2208.     if(conv) {

  2209.         uint8_t *srcPtr= src[0];

  2210.         if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)

  2211.             srcPtr += ALT32_CORR;

  2212. 

  2213.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  2214.             conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  2215.         else {

  2216.             int i;

  2217.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2218. 

  2219.             for (i=0; i<srcSliceH; i++) {

  2220.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  2221.                 srcPtr+= srcStride[0];

  2222.                 dstPtr+= dstStride[0];

  2223.             }

  2224.         }

  2225.     }

  2226.     return srcSliceH;

  2227. }

  2228. 

  2229. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2230.                               int srcSliceH, uint8_t* dst[], int dstStride[])

  2231. {

  2232. 

  2233.     rgb24toyv12(

  2234.         src[0],

  2235.         dst[0]+ srcSliceY    *dstStride[0],

  2236.         dst[1]+(srcSliceY>>1)*dstStride[1],

  2237.         dst[2]+(srcSliceY>>1)*dstStride[2],

  2238.         c->srcW, srcSliceH,

  2239.         dstStride[0], dstStride[1], srcStride[0]);

  2240.     if (dst[3])

  2241.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2242.     return srcSliceH;

  2243. }

  2244. 

  2245. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2246.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  2247. {

  2248.     int i;

  2249. 

  2250.     /* copy Y */

  2251.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  2252.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  2253.     else {

  2254.         uint8_t *srcPtr= src[0];

  2255.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2256. 

  2257.         for (i=0; i<srcSliceH; i++) {

  2258.             memcpy(dstPtr, srcPtr, c->srcW);

  2259.             srcPtr+= srcStride[0];

  2260.             dstPtr+= dstStride[0];

  2261.         }

  2262.     }

  2263. 

  2264.     if (c->dstFormat==PIX_FMT_YUV420P || c->dstFormat==PIX_FMT_YUVA420P) {

  2265.         planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  2266.                  srcSliceH >> 2, srcStride[1], dstStride[1]);

  2267.         planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  2268.                  srcSliceH >> 2, srcStride[2], dstStride[2]);

  2269.     } else {

  2270.         planar2x(src[1], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  2271.                  srcSliceH >> 2, srcStride[1], dstStride[2]);

  2272.         planar2x(src[2], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  2273.                  srcSliceH >> 2, srcStride[2], dstStride[1]);

  2274.     }

  2275.     if (dst[3])

  2276.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2277.     return srcSliceH;

  2278. }

  2279. 

  2280. /* unscaled copy like stuff (assumes nearly identical formats) */

  2281. static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2282.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2283. {

  2284.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  2285.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  2286.     else {

  2287.         int i;

  2288.         uint8_t *srcPtr= src[0];

  2289.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2290.         int length=0;

  2291. 

  2292.         /* universal length finder */

  2293.         while(length+c->srcW <= FFABS(dstStride[0])

  2294.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  2295.         assert(length!=0);

  2296. 

  2297.         for (i=0; i<srcSliceH; i++) {

  2298.             memcpy(dstPtr, srcPtr, length);

  2299.             srcPtr+= srcStride[0];

  2300.             dstPtr+= dstStride[0];

  2301.         }

  2302.     }

  2303.     return srcSliceH;

  2304. }

  2305. 

  2306. static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2307.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2308. {

  2309.     int plane, i, j;

  2310.     for (plane=0; plane<4; plane++) {

  2311.         int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  2312.         int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  2313.         int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  2314.         uint8_t *srcPtr= src[plane];

  2315.         uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  2316. 

  2317.         if (!dst[plane]) continue;

  2318.         // ignore palette for GRAY8

  2319.         if (plane == 1 && !dst[2]) continue;

  2320.         if (!src[plane] || (plane == 1 && !src[2])) {

  2321.             if(is16BPS(c->dstFormat))

  2322.                 length*=2;

  2323.             fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);

  2324.         } else {

  2325.             if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {

  2326.                 if (!isBE(c->srcFormat)) srcPtr++;

  2327.                 for (i=0; i<height; i++) {

  2328.                     for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  2329.                     srcPtr+= srcStride[plane];

  2330.                     dstPtr+= dstStride[plane];

  2331.                 }

  2332.             } else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {

  2333.                 for (i=0; i<height; i++) {

  2334.                     for (j=0; j<length; j++) {

  2335.                         dstPtr[ j<<1   ] = srcPtr[j];

  2336.                         dstPtr[(j<<1)+1] = srcPtr[j];

  2337.                     }

  2338.                     srcPtr+= srcStride[plane];

  2339.                     dstPtr+= dstStride[plane];

  2340.                 }

  2341.             } else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)

  2342.                   && isBE(c->srcFormat) != isBE(c->dstFormat)) {

  2343. 

  2344.                 for (i=0; i<height; i++) {

  2345.                     for (j=0; j<length; j++)

  2346.                         ((uint16_t*)dstPtr)[j] = bswap_16(((uint16_t*)srcPtr)[j]);

  2347.                     srcPtr+= srcStride[plane];

  2348.                     dstPtr+= dstStride[plane];

  2349.                 }

  2350.             } else if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  2351.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  2352.             else {

  2353.                 if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))

  2354.                     length*=2;

  2355.                 for (i=0; i<height; i++) {

  2356.                     memcpy(dstPtr, srcPtr, length);

  2357.                     srcPtr+= srcStride[plane];

  2358.                     dstPtr+= dstStride[plane];

  2359.                 }

  2360.             }

  2361.         }

  2362.     }

  2363.     return srcSliceH;

  2364. }

  2365. 

  2366. 

  2367. static void getSubSampleFactors(int *h, int *v, int format)

  2368. {

  2369.     switch(format) {

  2370.     case PIX_FMT_UYVY422:

  2371.     case PIX_FMT_YUYV422:

  2372.         *h=1;

  2373.         *v=0;

  2374.         break;

  2375.     case PIX_FMT_YUV420P:

  2376.     case PIX_FMT_YUV420P16LE:

  2377.     case PIX_FMT_YUV420P16BE:

  2378.     case PIX_FMT_YUVA420P:

  2379.     case PIX_FMT_GRAY16BE:

  2380.     case PIX_FMT_GRAY16LE:

  2381.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  2382.     case PIX_FMT_NV12:

  2383.     case PIX_FMT_NV21:

  2384.         *h=1;

  2385.         *v=1;

  2386.         break;

  2387.     case PIX_FMT_YUV440P:

  2388.         *h=0;

  2389.         *v=1;

  2390.         break;

  2391.     case PIX_FMT_YUV410P:

  2392.         *h=2;

  2393.         *v=2;

  2394.         break;

  2395.     case PIX_FMT_YUV444P:

  2396.     case PIX_FMT_YUV444P16LE:

  2397.     case PIX_FMT_YUV444P16BE:

  2398.         *h=0;

  2399.         *v=0;

  2400.         break;

  2401.     case PIX_FMT_YUV422P:

  2402.     case PIX_FMT_YUV422P16LE:

  2403.     case PIX_FMT_YUV422P16BE:

  2404.         *h=1;

  2405.         *v=0;

  2406.         break;

  2407.     case PIX_FMT_YUV411P:

  2408.         *h=2;

  2409.         *v=0;

  2410.         break;

  2411.     default:

  2412.         *h=0;

  2413.         *v=0;

  2414.         break;

  2415.     }

  2416. }

  2417. 

  2418. static uint16_t roundToInt16(int64_t f)

  2419. {

  2420.     int r= (f + (1<<15))>>16;

  2421.          if (r<-0x7FFF) return 0x8000;

  2422.     else if (r> 0x7FFF) return 0x7FFF;

  2423.     else                return r;

  2424. }

  2425. 

  2426. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation)

  2427. {

  2428.     int64_t crv =  inv_table[0];

  2429.     int64_t cbu =  inv_table[1];

  2430.     int64_t cgu = -inv_table[2];

  2431.     int64_t cgv = -inv_table[3];

  2432.     int64_t cy  = 1<<16;

  2433.     int64_t oy  = 0;

  2434. 

  2435.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  2436.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  2437. 

  2438.     c->brightness= brightness;

  2439.     c->contrast  = contrast;

  2440.     c->saturation= saturation;

  2441.     c->srcRange  = srcRange;

  2442.     c->dstRange  = dstRange;

  2443.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2444. 

  2445.     c->uOffset=   0x0400040004000400LL;

  2446.     c->vOffset=   0x0400040004000400LL;

  2447. 

  2448.     if (!srcRange) {

  2449.         cy= (cy*255) / 219;

  2450.         oy= 16<<16;

  2451.     } else {

  2452.         crv= (crv*224) / 255;

  2453.         cbu= (cbu*224) / 255;

  2454.         cgu= (cgu*224) / 255;

  2455.         cgv= (cgv*224) / 255;

  2456.     }

  2457. 

  2458.     cy = (cy *contrast             )>>16;

  2459.     crv= (crv*contrast * saturation)>>32;

  2460.     cbu= (cbu*contrast * saturation)>>32;

  2461.     cgu= (cgu*contrast * saturation)>>32;

  2462.     cgv= (cgv*contrast * saturation)>>32;

  2463. 

  2464.     oy -= 256*brightness;

  2465. 

  2466.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  2467.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  2468.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  2469.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  2470.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  2471.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  2472. 

  2473.     c->yuv2rgb_y_coeff  = (int16_t)roundToInt16(cy <<13);

  2474.     c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);

  2475.     c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);

  2476.     c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);

  2477.     c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);

  2478.     c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);

  2479. 

  2480.     ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  2481.     //FIXME factorize

  2482. 

  2483. #ifdef COMPILE_ALTIVEC

  2484.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  2485.         ff_yuv2rgb_init_tables_altivec(c, inv_table, brightness, contrast, saturation);

  2486. #endif

  2487.     return 0;

  2488. }

  2489. 

  2490. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation)

  2491. {

  2492.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2493. 

  2494.     *inv_table = c->srcColorspaceTable;

  2495.     *table     = c->dstColorspaceTable;

  2496.     *srcRange  = c->srcRange;

  2497.     *dstRange  = c->dstRange;

  2498.     *brightness= c->brightness;

  2499.     *contrast  = c->contrast;

  2500.     *saturation= c->saturation;

  2501. 

  2502.     return 0;

  2503. }

  2504. 

  2505. static int handle_jpeg(enum PixelFormat *format)

  2506. {

  2507.     switch (*format) {

  2508.     case PIX_FMT_YUVJ420P:

  2509.         *format = PIX_FMT_YUV420P;

  2510.         return 1;

  2511.     case PIX_FMT_YUVJ422P:

  2512.         *format = PIX_FMT_YUV422P;

  2513.         return 1;

  2514.     case PIX_FMT_YUVJ444P:

  2515.         *format = PIX_FMT_YUV444P;

  2516.         return 1;

  2517.     case PIX_FMT_YUVJ440P:

  2518.         *format = PIX_FMT_YUV440P;

  2519.         return 1;

  2520.     default:

  2521.         return 0;

  2522.     }

  2523. }

  2524. 

  2525. SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  2526.                            SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)

  2527. {

  2528. 

  2529.     SwsContext *c;

  2530.     int i;

  2531.     int usesVFilter, usesHFilter;

  2532.     int unscaled, needsDither;

  2533.     int srcRange, dstRange;

  2534.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2535. #if ARCH_X86

  2536.     if (flags & SWS_CPU_CAPS_MMX)

  2537.         __asm__ volatile("emms\n\t"::: "memory");

  2538. #endif

  2539. 

  2540. #if !CONFIG_RUNTIME_CPUDETECT //ensure that the flags match the compiled variant if cpudetect is off

  2541.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2542. #if   COMPILE_TEMPLATE_MMX2

  2543.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2544. #elif COMPILE_TEMPLATE_AMD3DNOW

  2545.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2546. #elif COMPILE_TEMPLATE_MMX

  2547.     flags |= SWS_CPU_CAPS_MMX;

  2548. #elif COMPILE_TEMPLATE_ALTIVEC

  2549.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2550. #elif ARCH_BFIN

  2551.     flags |= SWS_CPU_CAPS_BFIN;

  2552. #endif

  2553. #endif /* CONFIG_RUNTIME_CPUDETECT */

  2554.     if (clip_table[512] != 255) globalInit();

  2555.     if (!rgb15to16) sws_rgb2rgb_init(flags);

  2556. 

  2557.     unscaled = (srcW == dstW && srcH == dstH);

  2558.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2559.         && (fmt_depth(dstFormat))<24

  2560.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2561. 

  2562.     srcRange = handle_jpeg(&srcFormat);

  2563.     dstRange = handle_jpeg(&dstFormat);

  2564. 

  2565.     if (!isSupportedIn(srcFormat)) {

  2566.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));

  2567.         return NULL;

  2568.     }

  2569.     if (!isSupportedOut(dstFormat)) {

  2570.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));

  2571.         return NULL;

  2572.     }

  2573. 

  2574.     i= flags & ( SWS_POINT

  2575.                 |SWS_AREA

  2576.                 |SWS_BILINEAR

  2577.                 |SWS_FAST_BILINEAR

  2578.                 |SWS_BICUBIC

  2579.                 |SWS_X

  2580.                 |SWS_GAUSS

  2581.                 |SWS_LANCZOS

  2582.                 |SWS_SINC

  2583.                 |SWS_SPLINE

  2584.                 |SWS_BICUBLIN);

  2585.     if(!i || (i & (i-1))) {

  2586.         av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be chosen\n");

  2587.         return NULL;

  2588.     }

  2589. 

  2590.     /* sanity check */

  2591.     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

  2592.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2593.                srcW, srcH, dstW, dstH);

  2594.         return NULL;

  2595.     }

  2596.     if(srcW > VOFW || dstW > VOFW) {

  2597.         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile-time maximum width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");

  2598.         return NULL;

  2599.     }

  2600. 

  2601.     if (!dstFilter) dstFilter= &dummyFilter;

  2602.     if (!srcFilter) srcFilter= &dummyFilter;

  2603. 

  2604.     FF_ALLOCZ_OR_GOTO(NULL, c, sizeof(SwsContext), fail);

  2605. 

  2606.     c->av_class = &sws_context_class;

  2607.     c->srcW= srcW;

  2608.     c->srcH= srcH;

  2609.     c->dstW= dstW;

  2610.     c->dstH= dstH;

  2611.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2612.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2613.     c->flags= flags;

  2614.     c->dstFormat= dstFormat;

  2615.     c->srcFormat= srcFormat;

  2616.     c->vRounder= 4* 0x0001000100010001ULL;

  2617. 

  2618.     usesHFilter= usesVFilter= 0;

  2619.     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;

  2620.     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;

  2621.     if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;

  2622.     if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;

  2623.     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;

  2624.     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;

  2625.     if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;

  2626.     if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;

  2627. 

  2628.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2629.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2630. 

  2631.     // reuse chroma for 2 pixels RGB/BGR unless user wants full chroma interpolation

  2632.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2633. 

  2634.     // drop some chroma lines if the user wants it

  2635.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2636.     c->chrSrcVSubSample+= c->vChrDrop;

  2637. 

  2638.     // drop every other pixel for chroma calculation unless user wants full chroma

  2639.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2640.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2641.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2642.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE

  2643.       && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2644.         c->chrSrcHSubSample=1;

  2645. 

  2646.     if (param) {

  2647.         c->param[0] = param[0];

  2648.         c->param[1] = param[1];

  2649.     } else {

  2650.         c->param[0] =

  2651.         c->param[1] = SWS_PARAM_DEFAULT;

  2652.     }

  2653. 

  2654.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2655.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2656.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2657.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2658.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2659. 

  2660.     sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);

  2661. 

  2662.     /* unscaled special cases */

  2663.     if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat))) {

  2664.         /* yv12_to_nv12 */

  2665.         if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {

  2666.             c->swScale= PlanarToNV12Wrapper;

  2667.         }

  2668.         /* yuv2bgr */

  2669.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && (isBGR(dstFormat) || isRGB(dstFormat))

  2670.             && !(flags & SWS_ACCURATE_RND) && !(dstH&1)) {

  2671.             c->swScale= ff_yuv2rgb_get_func_ptr(c);

  2672.         }

  2673. 

  2674.         if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT)) {

  2675.             c->swScale= yvu9toyv12Wrapper;

  2676.         }

  2677. 

  2678.         /* bgr24toYV12 */

  2679.         if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))

  2680.             c->swScale= bgr24toyv12Wrapper;

  2681. 

  2682.         /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  2683.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2684.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2685.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2686.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2687.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2688.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2689.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2690.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2691.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2692.            && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  2693.                                              && dstFormat != PIX_FMT_RGB32_1

  2694.                                              && dstFormat != PIX_FMT_BGR32_1

  2695.            && srcFormat != PIX_FMT_RGB48LE   && dstFormat != PIX_FMT_RGB48LE

  2696.            && srcFormat != PIX_FMT_RGB48BE   && dstFormat != PIX_FMT_RGB48BE

  2697.            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2698.              c->swScale= rgb2rgbWrapper;

  2699. 

  2700.         if ((usePal(srcFormat) && (

  2701.                  dstFormat == PIX_FMT_RGB32   ||

  2702.                  dstFormat == PIX_FMT_RGB32_1 ||

  2703.                  dstFormat == PIX_FMT_RGB24   ||

  2704.                  dstFormat == PIX_FMT_BGR32   ||

  2705.                  dstFormat == PIX_FMT_BGR32_1 ||

  2706.                  dstFormat == PIX_FMT_BGR24)))

  2707.              c->swScale= pal2rgbWrapper;

  2708. 

  2709.         if (srcFormat == PIX_FMT_YUV422P) {

  2710.             if (dstFormat == PIX_FMT_YUYV422)

  2711.                 c->swScale= YUV422PToYuy2Wrapper;

  2712.             else if (dstFormat == PIX_FMT_UYVY422)

  2713.                 c->swScale= YUV422PToUyvyWrapper;

  2714.         }

  2715. 

  2716.         /* LQ converters if -sws 0 or -sws 4*/

  2717.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {

  2718.             /* yv12_to_yuy2 */

  2719.             if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {

  2720.                 if (dstFormat == PIX_FMT_YUYV422)

  2721.                     c->swScale= PlanarToYuy2Wrapper;

  2722.                 else if (dstFormat == PIX_FMT_UYVY422)

  2723.                     c->swScale= PlanarToUyvyWrapper;

  2724.             }

  2725.         }

  2726.         if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  2727.             c->swScale= YUYV2YUV420Wrapper;

  2728.         if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  2729.             c->swScale= UYVY2YUV420Wrapper;

  2730.         if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)

  2731.             c->swScale= YUYV2YUV422Wrapper;

  2732.         if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)

  2733.             c->swScale= UYVY2YUV422Wrapper;

  2734. 

  2735. #ifdef COMPILE_ALTIVEC

  2736.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2737.             !(c->flags & SWS_BITEXACT) &&

  2738.             srcFormat == PIX_FMT_YUV420P) {

  2739.           // unscaled YV12 -> packed YUV, we want speed

  2740.           if (dstFormat == PIX_FMT_YUYV422)

  2741.               c->swScale= yv12toyuy2_unscaled_altivec;

  2742.           else if (dstFormat == PIX_FMT_UYVY422)

  2743.               c->swScale= yv12touyvy_unscaled_altivec;

  2744.         }

  2745. #endif

  2746. 

  2747.         /* simple copy */

  2748.         if (  srcFormat == dstFormat

  2749.             || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)

  2750.             || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)

  2751.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2752.             || (isPlanarYUV(dstFormat) && isGray(srcFormat))

  2753.             || (isGray(dstFormat) && isGray(srcFormat))

  2754.             || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)

  2755.                 && c->chrDstHSubSample == c->chrSrcHSubSample

  2756.                 && c->chrDstVSubSample == c->chrSrcVSubSample

  2757.                 && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21

  2758.                 && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))

  2759.         {

  2760.             if (isPacked(c->srcFormat))

  2761.                 c->swScale= packedCopy;

  2762.             else /* Planar YUV or gray */

  2763.                 c->swScale= planarCopy;

  2764.         }

  2765. #if ARCH_BFIN

  2766.         if (flags & SWS_CPU_CAPS_BFIN)

  2767.             ff_bfin_get_unscaled_swscale (c);

  2768. #endif

  2769. 

  2770.         if (c->swScale) {

  2771.             if (flags&SWS_PRINT_INFO)

  2772.                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",

  2773.                        sws_format_name(srcFormat), sws_format_name(dstFormat));

  2774.             return c;

  2775.         }

  2776.     }

  2777. 

  2778.     if (flags & SWS_CPU_CAPS_MMX2) {

  2779.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2780.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR)) {

  2781.             if (flags&SWS_PRINT_INFO)

  2782.                 av_log(c, AV_LOG_INFO, "output width is not a multiple of 32 -> no MMX2 scaler\n");

  2783.         }

  2784.         if (usesHFilter) c->canMMX2BeUsed=0;

  2785.     }

  2786.     else

  2787.         c->canMMX2BeUsed=0;

  2788. 

  2789.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2790.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2791. 

  2792.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2793.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2794.     // n-2 is the last chrominance sample available

  2795.     // this is not perfect, but no one should notice the difference, the more correct variant

  2796.     // would be like the vertical one, but that would require some special code for the

  2797.     // first and last pixel

  2798.     if (flags&SWS_FAST_BILINEAR) {

  2799.         if (c->canMMX2BeUsed) {

  2800.             c->lumXInc+= 20;

  2801.             c->chrXInc+= 20;

  2802.         }

  2803.         //we don't use the x86 asm scaler if MMX is available

  2804.         else if (flags & SWS_CPU_CAPS_MMX) {

  2805.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2806.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2807.         }

  2808.     }

  2809. 

  2810.     /* precalculate horizontal scaler filter coefficients */

  2811.     {

  2812.         const int filterAlign=

  2813.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2814.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2815.             1;

  2816. 

  2817.         if (initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2818.                        srcW      ,       dstW, filterAlign, 1<<14,

  2819.                        (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2820.                        srcFilter->lumH, dstFilter->lumH, c->param) < 0)

  2821.             goto fail;

  2822.         if (initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2823.                        c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2824.                        (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2825.                        srcFilter->chrH, dstFilter->chrH, c->param) < 0)

  2826.             goto fail;

  2827. 

  2828. #if defined(COMPILE_MMX2)

  2829. // can't downscale !!!

  2830.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR)) {

  2831.             c->lumMmx2FilterCodeSize = initMMX2HScaler(      dstW, c->lumXInc, NULL, NULL, NULL, 8);

  2832.             c->chrMmx2FilterCodeSize = initMMX2HScaler(c->chrDstW, c->chrXInc, NULL, NULL, NULL, 4);

  2833. 

  2834. #ifdef MAP_ANONYMOUS

  2835.             c->lumMmx2FilterCode = mmap(NULL, c->lumMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2836.             c->chrMmx2FilterCode = mmap(NULL, c->chrMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2837. #elif HAVE_VIRTUALALLOC

  2838.             c->lumMmx2FilterCode = VirtualAlloc(NULL, c->lumMmx2FilterCodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2839.             c->chrMmx2FilterCode = VirtualAlloc(NULL, c->chrMmx2FilterCodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2840. #else

  2841.             c->lumMmx2FilterCode = av_malloc(c->lumMmx2FilterCodeSize);

  2842.             c->chrMmx2FilterCode = av_malloc(c->chrMmx2FilterCodeSize);

  2843. #endif

  2844. 

  2845.             FF_ALLOCZ_OR_GOTO(c, c->lumMmx2Filter   , (dstW        /8+8)*sizeof(int16_t), fail);

  2846.             FF_ALLOCZ_OR_GOTO(c, c->chrMmx2Filter   , (c->chrDstW  /4+8)*sizeof(int16_t), fail);

  2847.             FF_ALLOCZ_OR_GOTO(c, c->lumMmx2FilterPos, (dstW      /2/8+8)*sizeof(int32_t), fail);

  2848.             FF_ALLOCZ_OR_GOTO(c, c->chrMmx2FilterPos, (c->chrDstW/2/4+8)*sizeof(int32_t), fail);

  2849. 

  2850.             initMMX2HScaler(      dstW, c->lumXInc, c->lumMmx2FilterCode, c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2851.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->chrMmx2FilterCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2852. 

  2853. #ifdef MAP_ANONYMOUS

  2854.             mprotect(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize, PROT_EXEC | PROT_READ);

  2855.             mprotect(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize, PROT_EXEC | PROT_READ);

  2856. #endif

  2857.         }

  2858. #endif /* defined(COMPILE_MMX2) */

  2859.     } // initialize horizontal stuff

  2860. 

  2861. 

  2862. 

  2863.     /* precalculate vertical scaler filter coefficients */

  2864.     {

  2865.         const int filterAlign=

  2866.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2867.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2868.             1;

  2869. 

  2870.         if (initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2871.                    srcH      ,        dstH, filterAlign, (1<<12),

  2872.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2873.                    srcFilter->lumV, dstFilter->lumV, c->param) < 0)

  2874.             goto fail;

  2875.         if (initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2876.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12),

  2877.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2878.                    srcFilter->chrV, dstFilter->chrV, c->param) < 0)

  2879.             goto fail;

  2880. 

  2881. #ifdef COMPILE_ALTIVEC

  2882.         FF_ALLOC_OR_GOTO(c, c->vYCoeffsBank, sizeof (vector signed short)*c->vLumFilterSize*c->dstH, fail);

  2883.         FF_ALLOC_OR_GOTO(c, c->vCCoeffsBank, sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH, fail);

  2884. 

  2885.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2886.             int j;

  2887.             short *p = (short *)&c->vYCoeffsBank[i];

  2888.             for (j=0;j<8;j++)

  2889.                 p[j] = c->vLumFilter[i];

  2890.         }

  2891. 

  2892.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2893.             int j;

  2894.             short *p = (short *)&c->vCCoeffsBank[i];

  2895.             for (j=0;j<8;j++)

  2896.                 p[j] = c->vChrFilter[i];

  2897.         }

  2898. #endif

  2899.     }

  2900. 

  2901.     // calculate buffer sizes so that they won't run out while handling these damn slices

  2902.     c->vLumBufSize= c->vLumFilterSize;

  2903.     c->vChrBufSize= c->vChrFilterSize;

  2904.     for (i=0; i<dstH; i++) {

  2905.         int chrI= i*c->chrDstH / dstH;

  2906.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2907.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2908. 

  2909.         nextSlice>>= c->chrSrcVSubSample;

  2910.         nextSlice<<= c->chrSrcVSubSample;

  2911.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2912.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];

  2913.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2914.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2915.     }

  2916. 

  2917.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2918.     // allocate several megabytes to handle all possible cases)

  2919.     FF_ALLOC_OR_GOTO(c, c->lumPixBuf, c->vLumBufSize*2*sizeof(int16_t*), fail);

  2920.     FF_ALLOC_OR_GOTO(c, c->chrPixBuf, c->vChrBufSize*2*sizeof(int16_t*), fail);

  2921.     if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat))

  2922.         FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf, c->vLumBufSize*2*sizeof(int16_t*), fail);

  2923.     //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)

  2924.     /* align at 16 bytes for AltiVec */

  2925.     for (i=0; i<c->vLumBufSize; i++) {

  2926.         FF_ALLOCZ_OR_GOTO(c, c->lumPixBuf[i+c->vLumBufSize], VOF+1, fail);

  2927.         c->lumPixBuf[i] = c->lumPixBuf[i+c->vLumBufSize];

  2928.     }

  2929.     for (i=0; i<c->vChrBufSize; i++) {

  2930.         FF_ALLOC_OR_GOTO(c, c->chrPixBuf[i+c->vChrBufSize], (VOF+1)*2, fail);

  2931.         c->chrPixBuf[i] = c->chrPixBuf[i+c->vChrBufSize];

  2932.     }

  2933.     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf)

  2934.         for (i=0; i<c->vLumBufSize; i++) {

  2935.             FF_ALLOCZ_OR_GOTO(c, c->alpPixBuf[i+c->vLumBufSize], VOF+1, fail);

  2936.             c->alpPixBuf[i] = c->alpPixBuf[i+c->vLumBufSize];

  2937.         }

  2938. 

  2939.     //try to avoid drawing green stuff between the right end and the stride end

  2940.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);

  2941. 

  2942.     assert(2*VOFW == VOF);

  2943. 

  2944.     assert(c->chrDstH <= dstH);

  2945. 

  2946.     if (flags&SWS_PRINT_INFO) {

  2947. #ifdef DITHER1XBPP

  2948.         const char *dither= " dithered";

  2949. #else

  2950.         const char *dither= "";

  2951. #endif

  2952.         if (flags&SWS_FAST_BILINEAR)

  2953.             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");

  2954.         else if (flags&SWS_BILINEAR)

  2955.             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");

  2956.         else if (flags&SWS_BICUBIC)

  2957.             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");

  2958.         else if (flags&SWS_X)

  2959.             av_log(c, AV_LOG_INFO, "Experimental scaler, ");

  2960.         else if (flags&SWS_POINT)

  2961.             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");

  2962.         else if (flags&SWS_AREA)

  2963.             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");

  2964.         else if (flags&SWS_BICUBLIN)

  2965.             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");

  2966.         else if (flags&SWS_GAUSS)

  2967.             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");

  2968.         else if (flags&SWS_SINC)

  2969.             av_log(c, AV_LOG_INFO, "Sinc scaler, ");

  2970.         else if (flags&SWS_LANCZOS)

  2971.             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");

  2972.         else if (flags&SWS_SPLINE)

  2973.             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");

  2974.         else

  2975.             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");

  2976. 

  2977.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2978.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  2979.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2980.         else

  2981.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  2982.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  2983. 

  2984.         if (flags & SWS_CPU_CAPS_MMX2)

  2985.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  2986.         else if (flags & SWS_CPU_CAPS_3DNOW)

  2987.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  2988.         else if (flags & SWS_CPU_CAPS_MMX)

  2989.             av_log(c, AV_LOG_INFO, "using MMX\n");

  2990.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  2991.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  2992.         else

  2993.             av_log(c, AV_LOG_INFO, "using C\n");

  2994.     }

  2995. 

  2996.     if (flags & SWS_PRINT_INFO) {

  2997.         if (flags & SWS_CPU_CAPS_MMX) {

  2998.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2999.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  3000.             else {

  3001.                 if (c->hLumFilterSize==4)

  3002.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");

  3003.                 else if (c->hLumFilterSize==8)

  3004.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");

  3005.                 else

  3006.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");

  3007. 

  3008.                 if (c->hChrFilterSize==4)

  3009.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");

  3010.                 else if (c->hChrFilterSize==8)

  3011.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");

  3012.                 else

  3013.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");

  3014.             }

  3015.         } else {

  3016. #if ARCH_X86

  3017.             av_log(c, AV_LOG_VERBOSE, "using x86 asm scaler for horizontal scaling\n");

  3018. #else

  3019.             if (flags & SWS_FAST_BILINEAR)

  3020.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");

  3021.             else

  3022.                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");

  3023. #endif

  3024.         }

  3025.         if (isPlanarYUV(dstFormat)) {

  3026.             if (c->vLumFilterSize==1)

  3027.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3028.             else

  3029.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3030.         } else {

  3031.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  3032.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  3033.                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3034.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  3035.                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3036.             else

  3037.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3038.         }

  3039. 

  3040.         if (dstFormat==PIX_FMT_BGR24)

  3041.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 converter\n",

  3042.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  3043.         else if (dstFormat==PIX_FMT_RGB32)

  3044.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3045.         else if (dstFormat==PIX_FMT_BGR565)

  3046.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3047.         else if (dstFormat==PIX_FMT_BGR555)

  3048.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3049. 

  3050.         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  3051.     }

  3052.     if (flags & SWS_PRINT_INFO) {

  3053.         av_log(c, AV_LOG_DEBUG, "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  3054.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  3055.         av_log(c, AV_LOG_DEBUG, "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  3056.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  3057.     }

  3058. 

  3059.     c->swScale= getSwsFunc(c);

  3060.     return c;

  3061. 

  3062. fail:

  3063.     sws_freeContext(c);

  3064.     return NULL;

  3065. }

  3066. 

  3067. static void reset_ptr(uint8_t* src[], int format)

  3068. {

  3069.     if(!isALPHA(format))

  3070.         src[3]=NULL;

  3071.     if(!isPlanarYUV(format)) {

  3072.         src[3]=src[2]=NULL;

  3073.         if(   format != PIX_FMT_PAL8

  3074.            && format != PIX_FMT_RGB8

  3075.            && format != PIX_FMT_BGR8

  3076.            && format != PIX_FMT_RGB4_BYTE

  3077.            && format != PIX_FMT_BGR4_BYTE

  3078.           )

  3079.             src[1]= NULL;

  3080.     }

  3081. }

  3082. 

  3083. /**

  3084.  * swscale wrapper, so we don't need to export the SwsContext.

  3085.  * Assumes planar YUV to be in YUV order instead of YVU.

  3086.  */

  3087. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  3088.               int srcSliceH, uint8_t* dst[], int dstStride[])

  3089. {

  3090.     int i;

  3091.     uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};

  3092.     uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};

  3093. 

  3094.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  3095.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  3096.         return 0;

  3097.     }

  3098.     if (c->sliceDir == 0) {

  3099.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  3100.     }

  3101. 

  3102.     if (usePal(c->srcFormat)) {

  3103.         for (i=0; i<256; i++) {

  3104.             int p, r, g, b,y,u,v;

  3105.             if(c->srcFormat == PIX_FMT_PAL8) {

  3106.                 p=((uint32_t*)(src[1]))[i];

  3107.                 r= (p>>16)&0xFF;

  3108.                 g= (p>> 8)&0xFF;

  3109.                 b=  p     &0xFF;

  3110.             } else if(c->srcFormat == PIX_FMT_RGB8) {

  3111.                 r= (i>>5    )*36;

  3112.                 g= ((i>>2)&7)*36;

  3113.                 b= (i&3     )*85;

  3114.             } else if(c->srcFormat == PIX_FMT_BGR8) {

  3115.                 b= (i>>6    )*85;

  3116.                 g= ((i>>3)&7)*36;

  3117.                 r= (i&7     )*36;

  3118.             } else if(c->srcFormat == PIX_FMT_RGB4_BYTE) {

  3119.                 r= (i>>3    )*255;

  3120.                 g= ((i>>1)&3)*85;

  3121.                 b= (i&1     )*255;

  3122.             } else {

  3123.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  3124.                 b= (i>>3    )*255;

  3125.                 g= ((i>>1)&3)*85;

  3126.                 r= (i&1     )*255;

  3127.             }

  3128.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3129.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3130.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3131.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  3132. 

  3133. 

  3134.             switch(c->dstFormat) {

  3135.             case PIX_FMT_BGR32:

  3136. #if !HAVE_BIGENDIAN

  3137.             case PIX_FMT_RGB24:

  3138. #endif

  3139.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  3140.                 break;

  3141.             case PIX_FMT_BGR32_1:

  3142. #if HAVE_BIGENDIAN

  3143.             case PIX_FMT_BGR24:

  3144. #endif

  3145.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  3146.                 break;

  3147.             case PIX_FMT_RGB32_1:

  3148. #if HAVE_BIGENDIAN

  3149.             case PIX_FMT_RGB24:

  3150. #endif

  3151.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  3152.                 break;

  3153.             case PIX_FMT_RGB32:

  3154. #if !HAVE_BIGENDIAN

  3155.             case PIX_FMT_BGR24:

  3156. #endif

  3157.             default:

  3158.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  3159.             }

  3160.         }

  3161.     }

  3162. 

  3163.     // copy strides, so they can safely be modified

  3164.     if (c->sliceDir == 1) {

  3165.         // slices go from top to bottom

  3166.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};

  3167.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};

  3168. 

  3169.         reset_ptr(src2, c->srcFormat);

  3170.         reset_ptr(dst2, c->dstFormat);

  3171. 

  3172.         /* reset slice direction at end of frame */

  3173.         if (srcSliceY + srcSliceH == c->srcH)

  3174.             c->sliceDir = 0;

  3175. 

  3176.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);

  3177.     } else {

  3178.         // slices go from bottom to top => we flip the image internally

  3179.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};

  3180.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};

  3181. 

  3182.         src2[0] += (srcSliceH-1)*srcStride[0];

  3183.         if (!usePal(c->srcFormat))

  3184.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  3185.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  3186.         src2[3] += (srcSliceH-1)*srcStride[3];

  3187.         dst2[0] += ( c->dstH                      -1)*dstStride[0];

  3188.         dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];

  3189.         dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];

  3190.         dst2[3] += ( c->dstH                      -1)*dstStride[3];

  3191. 

  3192.         reset_ptr(src2, c->srcFormat);

  3193.         reset_ptr(dst2, c->dstFormat);

  3194. 

  3195.         /* reset slice direction at end of frame */

  3196.         if (!srcSliceY)

  3197.             c->sliceDir = 0;

  3198. 

  3199.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  3200.     }

  3201. }

  3202. 

  3203. #if LIBSWSCALE_VERSION_MAJOR < 1

  3204. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  3205.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  3206. {

  3207.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  3208. }

  3209. #endif

  3210. 

  3211. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  3212.                                 float lumaSharpen, float chromaSharpen,

  3213.                                 float chromaHShift, float chromaVShift,

  3214.                                 int verbose)

  3215. {

  3216.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  3217.     if (!filter)

  3218.         return NULL;

  3219. 

  3220.     if (lumaGBlur!=0.0) {

  3221.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  3222.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  3223.     } else {

  3224.         filter->lumH= sws_getIdentityVec();

  3225.         filter->lumV= sws_getIdentityVec();

  3226.     }

  3227. 

  3228.     if (chromaGBlur!=0.0) {

  3229.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  3230.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  3231.     } else {

  3232.         filter->chrH= sws_getIdentityVec();

  3233.         filter->chrV= sws_getIdentityVec();

  3234.     }

  3235. 

  3236.     if (chromaSharpen!=0.0) {

  3237.         SwsVector *id= sws_getIdentityVec();

  3238.         sws_scaleVec(filter->chrH, -chromaSharpen);

  3239.         sws_scaleVec(filter->chrV, -chromaSharpen);

  3240.         sws_addVec(filter->chrH, id);

  3241.         sws_addVec(filter->chrV, id);

  3242.         sws_freeVec(id);

  3243.     }

  3244. 

  3245.     if (lumaSharpen!=0.0) {

  3246.         SwsVector *id= sws_getIdentityVec();

  3247.         sws_scaleVec(filter->lumH, -lumaSharpen);

  3248.         sws_scaleVec(filter->lumV, -lumaSharpen);

  3249.         sws_addVec(filter->lumH, id);

  3250.         sws_addVec(filter->lumV, id);

  3251.         sws_freeVec(id);

  3252.     }

  3253. 

  3254.     if (chromaHShift != 0.0)

  3255.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  3256. 

  3257.     if (chromaVShift != 0.0)

  3258.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  3259. 

  3260.     sws_normalizeVec(filter->chrH, 1.0);

  3261.     sws_normalizeVec(filter->chrV, 1.0);

  3262.     sws_normalizeVec(filter->lumH, 1.0);

  3263.     sws_normalizeVec(filter->lumV, 1.0);

  3264. 

  3265.     if (verbose) sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);

  3266.     if (verbose) sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);

  3267. 

  3268.     return filter;

  3269. }

  3270. 

  3271. SwsVector *sws_allocVec(int length)

  3272. {

  3273.     SwsVector *vec = av_malloc(sizeof(SwsVector));

  3274.     if (!vec)

  3275.         return NULL;

  3276.     vec->length = length;

  3277.     vec->coeff  = av_malloc(sizeof(double) * length);

  3278.     if (!vec->coeff)

  3279.         av_freep(&vec);

  3280.     return vec;

  3281. }

  3282. 

  3283. SwsVector *sws_getGaussianVec(double variance, double quality)

  3284. {

  3285.     const int length= (int)(variance*quality + 0.5) | 1;

  3286.     int i;

  3287.     double middle= (length-1)*0.5;

  3288.     SwsVector *vec= sws_allocVec(length);

  3289. 

  3290.     if (!vec)

  3291.         return NULL;

  3292. 

  3293.     for (i=0; i<length; i++) {

  3294.         double dist= i-middle;

  3295.         vec->coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);

  3296.     }

  3297. 

  3298.     sws_normalizeVec(vec, 1.0);

  3299. 

  3300.     return vec;

  3301. }

  3302. 

  3303. SwsVector *sws_getConstVec(double c, int length)

  3304. {

  3305.     int i;

  3306.     SwsVector *vec= sws_allocVec(length);

  3307. 

  3308.     if (!vec)

  3309.         return NULL;

  3310. 

  3311.     for (i=0; i<length; i++)

  3312.         vec->coeff[i]= c;

  3313. 

  3314.     return vec;

  3315. }

  3316. 

  3317. 

  3318. SwsVector *sws_getIdentityVec(void)

  3319. {

  3320.     return sws_getConstVec(1.0, 1);

  3321. }

  3322. 

  3323. double sws_dcVec(SwsVector *a)

  3324. {

  3325.     int i;

  3326.     double sum=0;

  3327. 

  3328.     for (i=0; i<a->length; i++)

  3329.         sum+= a->coeff[i];

  3330. 

  3331.     return sum;

  3332. }

  3333. 

  3334. void sws_scaleVec(SwsVector *a, double scalar)

  3335. {

  3336.     int i;

  3337. 

  3338.     for (i=0; i<a->length; i++)

  3339.         a->coeff[i]*= scalar;

  3340. }

  3341. 

  3342. void sws_normalizeVec(SwsVector *a, double height)

  3343. {

  3344.     sws_scaleVec(a, height/sws_dcVec(a));

  3345. }

  3346. 

  3347. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b)

  3348. {

  3349.     int length= a->length + b->length - 1;

  3350.     int i, j;

  3351.     SwsVector *vec= sws_getConstVec(0.0, length);

  3352. 

  3353.     if (!vec)

  3354.         return NULL;

  3355. 

  3356.     for (i=0; i<a->length; i++) {

  3357.         for (j=0; j<b->length; j++) {

  3358.             vec->coeff[i+j]+= a->coeff[i]*b->coeff[j];

  3359.         }

  3360.     }

  3361. 

  3362.     return vec;

  3363. }

  3364. 

  3365. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b)

  3366. {

  3367.     int length= FFMAX(a->length, b->length);

  3368.     int i;

  3369.     SwsVector *vec= sws_getConstVec(0.0, length);

  3370. 

  3371.     if (!vec)

  3372.         return NULL;

  3373. 

  3374.     for (i=0; i<a->length; i++) vec->coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3375.     for (i=0; i<b->length; i++) vec->coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  3376. 

  3377.     return vec;

  3378. }

  3379. 

  3380. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b)

  3381. {

  3382.     int length= FFMAX(a->length, b->length);

  3383.     int i;

  3384.     SwsVector *vec= sws_getConstVec(0.0, length);

  3385. 

  3386.     if (!vec)

  3387.         return NULL;

  3388. 

  3389.     for (i=0; i<a->length; i++) vec->coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3390.     for (i=0; i<b->length; i++) vec->coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  3391. 

  3392.     return vec;

  3393. }

  3394. 

  3395. /* shift left / or right if "shift" is negative */

  3396. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift)

  3397. {

  3398.     int length= a->length + FFABS(shift)*2;

  3399.     int i;

  3400.     SwsVector *vec= sws_getConstVec(0.0, length);

  3401. 

  3402.     if (!vec)

  3403.         return NULL;

  3404. 

  3405.     for (i=0; i<a->length; i++) {

  3406.         vec->coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  3407.     }

  3408. 

  3409.     return vec;

  3410. }

  3411. 

  3412. void sws_shiftVec(SwsVector *a, int shift)

  3413. {

  3414.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  3415.     av_free(a->coeff);

  3416.     a->coeff= shifted->coeff;

  3417.     a->length= shifted->length;

  3418.     av_free(shifted);

  3419. }

  3420. 

  3421. void sws_addVec(SwsVector *a, SwsVector *b)

  3422. {

  3423.     SwsVector *sum= sws_sumVec(a, b);

  3424.     av_free(a->coeff);

  3425.     a->coeff= sum->coeff;

  3426.     a->length= sum->length;

  3427.     av_free(sum);

  3428. }

  3429. 

  3430. void sws_subVec(SwsVector *a, SwsVector *b)

  3431. {

  3432.     SwsVector *diff= sws_diffVec(a, b);

  3433.     av_free(a->coeff);

  3434.     a->coeff= diff->coeff;

  3435.     a->length= diff->length;

  3436.     av_free(diff);

  3437. }

  3438. 

  3439. void sws_convVec(SwsVector *a, SwsVector *b)

  3440. {

  3441.     SwsVector *conv= sws_getConvVec(a, b);

  3442.     av_free(a->coeff);

  3443.     a->coeff= conv->coeff;

  3444.     a->length= conv->length;

  3445.     av_free(conv);

  3446. }

  3447. 

  3448. SwsVector *sws_cloneVec(SwsVector *a)

  3449. {

  3450.     int i;

  3451.     SwsVector *vec= sws_allocVec(a->length);

  3452. 

  3453.     if (!vec)

  3454.         return NULL;

  3455. 

  3456.     for (i=0; i<a->length; i++) vec->coeff[i]= a->coeff[i];

  3457. 

  3458.     return vec;

  3459. }

  3460. 

  3461. void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)

  3462. {

  3463.     int i;

  3464.     double max=0;

  3465.     double min=0;

  3466.     double range;

  3467. 

  3468.     for (i=0; i<a->length; i++)

  3469.         if (a->coeff[i]>max) max= a->coeff[i];

  3470. 

  3471.     for (i=0; i<a->length; i++)

  3472.         if (a->coeff[i]<min) min= a->coeff[i];

  3473. 

  3474.     range= max - min;

  3475. 

  3476.     for (i=0; i<a->length; i++) {

  3477.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  3478.         av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);

  3479.         for (;x>0; x--) av_log(log_ctx, log_level, " ");

  3480.         av_log(log_ctx, log_level, "|\n");

  3481.     }

  3482. }

  3483. 

  3484. #if LIBSWSCALE_VERSION_MAJOR < 1

  3485. void sws_printVec(SwsVector *a)

  3486. {

  3487.     sws_printVec2(a, NULL, AV_LOG_DEBUG);

  3488. }

  3489. #endif

  3490. 

  3491. void sws_freeVec(SwsVector *a)

  3492. {

  3493.     if (!a) return;

  3494.     av_freep(&a->coeff);

  3495.     a->length=0;

  3496.     av_free(a);

  3497. }

  3498. 

  3499. void sws_freeFilter(SwsFilter *filter)

  3500. {

  3501.     if (!filter) return;

  3502. 

  3503.     if (filter->lumH) sws_freeVec(filter->lumH);

  3504.     if (filter->lumV) sws_freeVec(filter->lumV);

  3505.     if (filter->chrH) sws_freeVec(filter->chrH);

  3506.     if (filter->chrV) sws_freeVec(filter->chrV);

  3507.     av_free(filter);

  3508. }

  3509. 

  3510. 

  3511. void sws_freeContext(SwsContext *c)

  3512. {

  3513.     int i;

  3514.     if (!c) return;

  3515. 

  3516.     if (c->lumPixBuf) {

  3517.         for (i=0; i<c->vLumBufSize; i++)

  3518.             av_freep(&c->lumPixBuf[i]);

  3519.         av_freep(&c->lumPixBuf);

  3520.     }

  3521. 

  3522.     if (c->chrPixBuf) {

  3523.         for (i=0; i<c->vChrBufSize; i++)

  3524.             av_freep(&c->chrPixBuf[i]);

  3525.         av_freep(&c->chrPixBuf);

  3526.     }

  3527. 

  3528.     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  3529.         for (i=0; i<c->vLumBufSize; i++)

  3530.             av_freep(&c->alpPixBuf[i]);

  3531.         av_freep(&c->alpPixBuf);

  3532.     }

  3533. 

  3534.     av_freep(&c->vLumFilter);

  3535.     av_freep(&c->vChrFilter);

  3536.     av_freep(&c->hLumFilter);

  3537.     av_freep(&c->hChrFilter);

  3538. #ifdef COMPILE_ALTIVEC

  3539.     av_freep(&c->vYCoeffsBank);

  3540.     av_freep(&c->vCCoeffsBank);

  3541. #endif

  3542. 

  3543.     av_freep(&c->vLumFilterPos);

  3544.     av_freep(&c->vChrFilterPos);

  3545.     av_freep(&c->hLumFilterPos);

  3546.     av_freep(&c->hChrFilterPos);

  3547. 

  3548. #if ARCH_X86 && CONFIG_GPL

  3549. #ifdef MAP_ANONYMOUS

  3550.     if (c->lumMmx2FilterCode) munmap(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize);

  3551.     if (c->chrMmx2FilterCode) munmap(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize);

  3552. #elif HAVE_VIRTUALALLOC

  3553.     if (c->lumMmx2FilterCode) VirtualFree(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize, MEM_RELEASE);

  3554.     if (c->chrMmx2FilterCode) VirtualFree(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize, MEM_RELEASE);

  3555. #else

  3556.     av_free(c->lumMmx2FilterCode);

  3557.     av_free(c->chrMmx2FilterCode);

  3558. #endif

  3559.     c->lumMmx2FilterCode=NULL;

  3560.     c->chrMmx2FilterCode=NULL;

  3561. #endif /* ARCH_X86 && CONFIG_GPL */

  3562. 

  3563.     av_freep(&c->lumMmx2Filter);

  3564.     av_freep(&c->chrMmx2Filter);

  3565.     av_freep(&c->lumMmx2FilterPos);

  3566.     av_freep(&c->chrMmx2FilterPos);

  3567.     av_freep(&c->yuvTable);

  3568. 

  3569.     av_free(c);

  3570. }

  3571. 

  3572. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  3573.                                         int srcW, int srcH, enum PixelFormat srcFormat,

  3574.                                         int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  3575.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)

  3576. {

  3577.     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};

  3578. 

  3579.     if (!param)

  3580.         param = default_param;

  3581. 

  3582.     if (context) {

  3583.         if (context->srcW != srcW || context->srcH != srcH ||

  3584.             context->srcFormat != srcFormat ||

  3585.             context->dstW != dstW || context->dstH != dstH ||

  3586.             context->dstFormat != dstFormat || context->flags != flags ||

  3587.             context->param[0] != param[0] || context->param[1] != param[1])

  3588.         {

  3589.             sws_freeContext(context);

  3590.             context = NULL;

  3591.         }

  3592.     }

  3593.     if (!context) {

  3594.         return sws_getContext(srcW, srcH, srcFormat,

  3595.                               dstW, dstH, dstFormat, flags,

  3596.                               srcFilter, dstFilter, param);

  3597.     }

  3598.     return context;

  3599. }