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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 <unistd.h>

  63. #include "config.h"

  64. #include <assert.h>

  65. #ifdef HAVE_SYS_MMAN_H

  66. #include <sys/mman.h>

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

  68. #define MAP_ANONYMOUS MAP_ANON

  69. #endif

  70. #endif

  71. #include "swscale.h"

  72. #include "swscale_internal.h"

  73. #include "rgb2rgb.h"

  74. #include "libavutil/x86_cpu.h"

  75. #include "libavutil/bswap.h"

  76. 

  77. unsigned swscale_version(void)

  78. {

  79.     return LIBSWSCALE_VERSION_INT;

  80. }

  81. 

  82. #undef MOVNTQ

  83. #undef PAVGB

  84. 

  85. //#undef HAVE_MMX2

  86. //#define HAVE_3DNOW

  87. //#undef HAVE_MMX

  88. //#undef ARCH_X86

  89. //#define WORDS_BIGENDIAN

  90. #define DITHER1XBPP

  91. 

  92. #define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit

  93. 

  94. #define RET 0xC3 //near return opcode for X86

  95. 

  96. #ifdef M_PI

  97. #define PI M_PI

  98. #else

  99. #define PI 3.14159265358979323846

  100. #endif

  101. 

  102. #define isSupportedIn(x)    (       \

  103.            (x)==PIX_FMT_YUV420P     \

  104.         || (x)==PIX_FMT_YUVA420P    \

  105.         || (x)==PIX_FMT_YUYV422     \

  106.         || (x)==PIX_FMT_UYVY422     \

  107.         || (x)==PIX_FMT_RGB32       \

  108.         || (x)==PIX_FMT_RGB32_1     \

  109.         || (x)==PIX_FMT_BGR24       \

  110.         || (x)==PIX_FMT_BGR565      \

  111.         || (x)==PIX_FMT_BGR555      \

  112.         || (x)==PIX_FMT_BGR32       \

  113.         || (x)==PIX_FMT_BGR32_1     \

  114.         || (x)==PIX_FMT_RGB24       \

  115.         || (x)==PIX_FMT_RGB565      \

  116.         || (x)==PIX_FMT_RGB555      \

  117.         || (x)==PIX_FMT_GRAY8       \

  118.         || (x)==PIX_FMT_YUV410P     \

  119.         || (x)==PIX_FMT_YUV440P     \

  120.         || (x)==PIX_FMT_GRAY16BE    \

  121.         || (x)==PIX_FMT_GRAY16LE    \

  122.         || (x)==PIX_FMT_YUV444P     \

  123.         || (x)==PIX_FMT_YUV422P     \

  124.         || (x)==PIX_FMT_YUV411P     \

  125.         || (x)==PIX_FMT_PAL8        \

  126.         || (x)==PIX_FMT_BGR8        \

  127.         || (x)==PIX_FMT_RGB8        \

  128.         || (x)==PIX_FMT_BGR4_BYTE   \

  129.         || (x)==PIX_FMT_RGB4_BYTE   \

  130.         || (x)==PIX_FMT_YUV440P     \

  131.         || (x)==PIX_FMT_MONOWHITE   \

  132.         || (x)==PIX_FMT_MONOBLACK   \

  133.     )

  134. #define isSupportedOut(x)   (       \

  135.            (x)==PIX_FMT_YUV420P     \

  136.         || (x)==PIX_FMT_YUYV422     \

  137.         || (x)==PIX_FMT_UYVY422     \

  138.         || (x)==PIX_FMT_YUV444P     \

  139.         || (x)==PIX_FMT_YUV422P     \

  140.         || (x)==PIX_FMT_YUV411P     \

  141.         || isRGB(x)                 \

  142.         || isBGR(x)                 \

  143.         || (x)==PIX_FMT_NV12        \

  144.         || (x)==PIX_FMT_NV21        \

  145.         || (x)==PIX_FMT_GRAY16BE    \

  146.         || (x)==PIX_FMT_GRAY16LE    \

  147.         || (x)==PIX_FMT_GRAY8       \

  148.         || (x)==PIX_FMT_YUV410P     \

  149.         || (x)==PIX_FMT_YUV440P     \

  150.     )

  151. #define isPacked(x)         (       \

  152.            (x)==PIX_FMT_PAL8        \

  153.         || (x)==PIX_FMT_YUYV422     \

  154.         || (x)==PIX_FMT_UYVY422     \

  155.         || isRGB(x)                 \

  156.         || isBGR(x)                 \

  157.     )

  158. 

  159. #define RGB2YUV_SHIFT 15

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

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

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

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

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

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

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

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

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

  169. 

  170. extern const int32_t Inverse_Table_6_9[8][4];

  171. 

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

  173.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  174.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  175.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  176.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  177.     {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC

  178.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  179.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //SMPTE 170M

  180.     {0.701 , 0.087 , 0.212 , -0.384, 0.5  -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M

  181. };

  182. 

  183. /*

  184. NOTES

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

  186. 

  187. TODO

  188. more intelligent misalignment avoidance for the horizontal scaler

  189. write special vertical cubic upscale version

  190. Optimize C code (yv12 / minmax)

  191. add support for packed pixel yuv input & output

  192. add support for Y8 output

  193. optimize bgr24 & bgr32

  194. add BGR4 output support

  195. write special BGR->BGR scaler

  196. */

  197. 

  198. #if defined(ARCH_X86) && defined (CONFIG_GPL)

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

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

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

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

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

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

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

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

  207. 

  208. static volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;

  209. static volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;

  210. static volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;

  211. static volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;

  212. 

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

  214.         0x0103010301030103LL,

  215.         0x0200020002000200LL,};

  216. 

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

  218.         0x0602060206020602LL,

  219.         0x0004000400040004LL,};

  220. 

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

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

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

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

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

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

  227. 

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

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

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

  231. 

  232. #ifdef FAST_BGR2YV12

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

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

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

  236. #else

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

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

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

  240. #endif /* FAST_BGR2YV12 */

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

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

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

  244. 

  245. DECLARE_ALIGNED(8, const uint64_t, ff_bgr24toY1Coeff) = 0x0C88000040870C88ULL;

  246. DECLARE_ALIGNED(8, const uint64_t, ff_bgr24toY2Coeff) = 0x20DE4087000020DEULL;

  247. DECLARE_ALIGNED(8, const uint64_t, ff_rgb24toY1Coeff) = 0x20DE0000408720DEULL;

  248. DECLARE_ALIGNED(8, const uint64_t, ff_rgb24toY2Coeff) = 0x0C88408700000C88ULL;

  249. DECLARE_ALIGNED(8, const uint64_t, ff_bgr24toYOffset) = 0x0008400000084000ULL;

  250. 

  251. DECLARE_ALIGNED(8, const uint64_t, ff_bgr24toUV[2][4]) = {

  252.     {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},

  253.     {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},

  254. };

  255. 

  256. DECLARE_ALIGNED(8, const uint64_t, ff_bgr24toUVOffset)= 0x0040400000404000ULL;

  257. 

  258. #endif /* defined(ARCH_X86) */

  259. 

  260. // clipping helper table for C implementations:

  261. static unsigned char clip_table[768];

  262. 

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

  264. 

  265. const uint8_t  __attribute__((aligned(8))) dither_2x2_4[2][8]={

  266. {  1,   3,   1,   3,   1,   3,   1,   3, },

  267. {  2,   0,   2,   0,   2,   0,   2,   0, },

  268. };

  269. 

  270. const uint8_t  __attribute__((aligned(8))) dither_2x2_8[2][8]={

  271. {  6,   2,   6,   2,   6,   2,   6,   2, },

  272. {  0,   4,   0,   4,   0,   4,   0,   4, },

  273. };

  274. 

  275. const uint8_t  __attribute__((aligned(8))) dither_8x8_32[8][8]={

  276. { 17,   9,  23,  15,  16,   8,  22,  14, },

  277. {  5,  29,   3,  27,   4,  28,   2,  26, },

  278. { 21,  13,  19,  11,  20,  12,  18,  10, },

  279. {  0,  24,   6,  30,   1,  25,   7,  31, },

  280. { 16,   8,  22,  14,  17,   9,  23,  15, },

  281. {  4,  28,   2,  26,   5,  29,   3,  27, },

  282. { 20,  12,  18,  10,  21,  13,  19,  11, },

  283. {  1,  25,   7,  31,   0,  24,   6,  30, },

  284. };

  285. 

  286. #if 0

  287. const uint8_t  __attribute__((aligned(8))) dither_8x8_64[8][8]={

  288. {  0,  48,  12,  60,   3,  51,  15,  63, },

  289. { 32,  16,  44,  28,  35,  19,  47,  31, },

  290. {  8,  56,   4,  52,  11,  59,   7,  55, },

  291. { 40,  24,  36,  20,  43,  27,  39,  23, },

  292. {  2,  50,  14,  62,   1,  49,  13,  61, },

  293. { 34,  18,  46,  30,  33,  17,  45,  29, },

  294. { 10,  58,   6,  54,   9,  57,   5,  53, },

  295. { 42,  26,  38,  22,  41,  25,  37,  21, },

  296. };

  297. #endif

  298. 

  299. const uint8_t  __attribute__((aligned(8))) dither_8x8_73[8][8]={

  300. {  0,  55,  14,  68,   3,  58,  17,  72, },

  301. { 37,  18,  50,  32,  40,  22,  54,  35, },

  302. {  9,  64,   5,  59,  13,  67,   8,  63, },

  303. { 46,  27,  41,  23,  49,  31,  44,  26, },

  304. {  2,  57,  16,  71,   1,  56,  15,  70, },

  305. { 39,  21,  52,  34,  38,  19,  51,  33, },

  306. { 11,  66,   7,  62,  10,  65,   6,  60, },

  307. { 48,  30,  43,  25,  47,  29,  42,  24, },

  308. };

  309. 

  310. #if 0

  311. const uint8_t  __attribute__((aligned(8))) dither_8x8_128[8][8]={

  312. { 68,  36,  92,  60,  66,  34,  90,  58, },

  313. { 20, 116,  12, 108,  18, 114,  10, 106, },

  314. { 84,  52,  76,  44,  82,  50,  74,  42, },

  315. {  0,  96,  24, 120,   6, 102,  30, 126, },

  316. { 64,  32,  88,  56,  70,  38,  94,  62, },

  317. { 16, 112,   8, 104,  22, 118,  14, 110, },

  318. { 80,  48,  72,  40,  86,  54,  78,  46, },

  319. {  4, 100,  28, 124,   2,  98,  26, 122, },

  320. };

  321. #endif

  322. 

  323. #if 1

  324. const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={

  325. {117,  62, 158, 103, 113,  58, 155, 100, },

  326. { 34, 199,  21, 186,  31, 196,  17, 182, },

  327. {144,  89, 131,  76, 141,  86, 127,  72, },

  328. {  0, 165,  41, 206,  10, 175,  52, 217, },

  329. {110,  55, 151,  96, 120,  65, 162, 107, },

  330. { 28, 193,  14, 179,  38, 203,  24, 189, },

  331. {138,  83, 124,  69, 148,  93, 134,  79, },

  332. {  7, 172,  48, 213,   3, 168,  45, 210, },

  333. };

  334. #elif 1

  335. // tries to correct a gamma of 1.5

  336. const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={

  337. {  0, 143,  18, 200,   2, 156,  25, 215, },

  338. { 78,  28, 125,  64,  89,  36, 138,  74, },

  339. { 10, 180,   3, 161,  16, 195,   8, 175, },

  340. {109,  51,  93,  38, 121,  60, 105,  47, },

  341. {  1, 152,  23, 210,   0, 147,  20, 205, },

  342. { 85,  33, 134,  71,  81,  30, 130,  67, },

  343. { 14, 190,   6, 171,  12, 185,   5, 166, },

  344. {117,  57, 101,  44, 113,  54,  97,  41, },

  345. };

  346. #elif 1

  347. // tries to correct a gamma of 2.0

  348. const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={

  349. {  0, 124,   8, 193,   0, 140,  12, 213, },

  350. { 55,  14, 104,  42,  66,  19, 119,  52, },

  351. {  3, 168,   1, 145,   6, 187,   3, 162, },

  352. { 86,  31,  70,  21,  99,  39,  82,  28, },

  353. {  0, 134,  11, 206,   0, 129,   9, 200, },

  354. { 62,  17, 114,  48,  58,  16, 109,  45, },

  355. {  5, 181,   2, 157,   4, 175,   1, 151, },

  356. { 95,  36,  78,  26,  90,  34,  74,  24, },

  357. };

  358. #else

  359. // tries to correct a gamma of 2.5

  360. const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={

  361. {  0, 107,   3, 187,   0, 125,   6, 212, },

  362. { 39,   7,  86,  28,  49,  11, 102,  36, },

  363. {  1, 158,   0, 131,   3, 180,   1, 151, },

  364. { 68,  19,  52,  12,  81,  25,  64,  17, },

  365. {  0, 119,   5, 203,   0, 113,   4, 195, },

  366. { 45,   9,  96,  33,  42,   8,  91,  30, },

  367. {  2, 172,   1, 144,   2, 165,   0, 137, },

  368. { 77,  23,  60,  15,  72,  21,  56,  14, },

  369. };

  370. #endif

  371. 

  372. const char *sws_format_name(enum PixelFormat format)

  373. {

  374.     switch (format) {

  375.         case PIX_FMT_YUV420P:

  376.             return "yuv420p";

  377.         case PIX_FMT_YUVA420P:

  378.             return "yuva420p";

  379.         case PIX_FMT_YUYV422:

  380.             return "yuyv422";

  381.         case PIX_FMT_RGB24:

  382.             return "rgb24";

  383.         case PIX_FMT_BGR24:

  384.             return "bgr24";

  385.         case PIX_FMT_YUV422P:

  386.             return "yuv422p";

  387.         case PIX_FMT_YUV444P:

  388.             return "yuv444p";

  389.         case PIX_FMT_RGB32:

  390.             return "rgb32";

  391.         case PIX_FMT_YUV410P:

  392.             return "yuv410p";

  393.         case PIX_FMT_YUV411P:

  394.             return "yuv411p";

  395.         case PIX_FMT_RGB565:

  396.             return "rgb565";

  397.         case PIX_FMT_RGB555:

  398.             return "rgb555";

  399.         case PIX_FMT_GRAY16BE:

  400.             return "gray16be";

  401.         case PIX_FMT_GRAY16LE:

  402.             return "gray16le";

  403.         case PIX_FMT_GRAY8:

  404.             return "gray8";

  405.         case PIX_FMT_MONOWHITE:

  406.             return "mono white";

  407.         case PIX_FMT_MONOBLACK:

  408.             return "mono black";

  409.         case PIX_FMT_PAL8:

  410.             return "Palette";

  411.         case PIX_FMT_YUVJ420P:

  412.             return "yuvj420p";

  413.         case PIX_FMT_YUVJ422P:

  414.             return "yuvj422p";

  415.         case PIX_FMT_YUVJ444P:

  416.             return "yuvj444p";

  417.         case PIX_FMT_XVMC_MPEG2_MC:

  418.             return "xvmc_mpeg2_mc";

  419.         case PIX_FMT_XVMC_MPEG2_IDCT:

  420.             return "xvmc_mpeg2_idct";

  421.         case PIX_FMT_UYVY422:

  422.             return "uyvy422";

  423.         case PIX_FMT_UYYVYY411:

  424.             return "uyyvyy411";

  425.         case PIX_FMT_RGB32_1:

  426.             return "rgb32x";

  427.         case PIX_FMT_BGR32_1:

  428.             return "bgr32x";

  429.         case PIX_FMT_BGR32:

  430.             return "bgr32";

  431.         case PIX_FMT_BGR565:

  432.             return "bgr565";

  433.         case PIX_FMT_BGR555:

  434.             return "bgr555";

  435.         case PIX_FMT_BGR8:

  436.             return "bgr8";

  437.         case PIX_FMT_BGR4:

  438.             return "bgr4";

  439.         case PIX_FMT_BGR4_BYTE:

  440.             return "bgr4 byte";

  441.         case PIX_FMT_RGB8:

  442.             return "rgb8";

  443.         case PIX_FMT_RGB4:

  444.             return "rgb4";

  445.         case PIX_FMT_RGB4_BYTE:

  446.             return "rgb4 byte";

  447.         case PIX_FMT_NV12:

  448.             return "nv12";

  449.         case PIX_FMT_NV21:

  450.             return "nv21";

  451.         case PIX_FMT_YUV440P:

  452.             return "yuv440p";

  453.         default:

  454.             return "Unknown format";

  455.     }

  456. }

  457. 

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

  459.                                int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,

  460.                                uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW)

  461. {

  462.     //FIXME Optimize (just quickly writen not opti..)

  463.     int i;

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

  465.     {

  466.         int val=1<<18;

  467.         int j;

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

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

  470. 

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

  472.     }

  473. 

  474.     if (uDest)

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

  476.         {

  477.             int u=1<<18;

  478.             int v=1<<18;

  479.             int j;

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

  481.             {

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

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

  484.             }

  485. 

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

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

  488.         }

  489. }

  490. 

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

  492.                                 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,

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

  494. {

  495.     //FIXME Optimize (just quickly writen not opti..)

  496.     int i;

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

  498.     {

  499.         int val=1<<18;

  500.         int j;

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

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

  503. 

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

  505.     }

  506. 

  507.     if (!uDest)

  508.         return;

  509. 

  510.     if (dstFormat == PIX_FMT_NV12)

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

  512.         {

  513.             int u=1<<18;

  514.             int v=1<<18;

  515.             int j;

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

  517.             {

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

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

  520.             }

  521. 

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

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

  524.         }

  525.     else

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

  527.         {

  528.             int u=1<<18;

  529.             int v=1<<18;

  530.             int j;

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

  532.             {

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

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

  535.             }

  536. 

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

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

  539.         }

  540. }

  541. 

  542. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type) \

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

  544.         int j;\

  545.         int Y1 = 1<<18;\

  546.         int Y2 = 1<<18;\

  547.         int U  = 1<<18;\

  548.         int V  = 1<<18;\

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

  550.         const int i2= 2*i;\

  551.         \

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

  553.         {\

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

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

  556.         }\

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

  558.         {\

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

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

  561.         }\

  562.         Y1>>=19;\

  563.         Y2>>=19;\

  564.         U >>=19;\

  565.         V >>=19;\

  566. 

  567. #define YSCALE_YUV_2_PACKEDX_C(type) \

  568.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type)\

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

  570.         {\

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

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

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

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

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

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

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

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

  579.         }

  580. 

  581. #define YSCALE_YUV_2_PACKEDX_FULL_C \

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

  583.         int j;\

  584.         int Y = 0;\

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

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

  587.         int R,G,B;\

  588.         \

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

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

  591.         }\

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

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

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

  595.         }\

  596.         Y >>=10;\

  597.         U >>=10;\

  598.         V >>=10;\

  599. 

  600. #define YSCALE_YUV_2_RGBX_FULL_C(rnd) \

  601.     YSCALE_YUV_2_PACKEDX_FULL_C\

  602.         Y-= c->yuv2rgb_y_offset;\

  603.         Y*= c->yuv2rgb_y_coeff;\

  604.         Y+= rnd;\

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

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

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

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

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

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

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

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

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

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

  615.         }\

  616. 

  617. 

  618. #define YSCALE_YUV_2_GRAY16_C \

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

  620.         int j;\

  621.         int Y1 = 1<<18;\

  622.         int Y2 = 1<<18;\

  623.         int U  = 1<<18;\

  624.         int V  = 1<<18;\

  625.         \

  626.         const int i2= 2*i;\

  627.         \

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

  629.         {\

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

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

  632.         }\

  633.         Y1>>=11;\

  634.         Y2>>=11;\

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

  636.         {\

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

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

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

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

  641.         }

  642. 

  643. #define YSCALE_YUV_2_RGBX_C(type) \

  644.     YSCALE_YUV_2_PACKEDX_C(type)  /* FIXME fix tables so that cliping is not needed and then use _NOCLIP*/\

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

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

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

  648. 

  649. #define YSCALE_YUV_2_PACKED2_C   \

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

  651.         const int i2= 2*i;       \

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

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

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

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

  656. 

  657. #define YSCALE_YUV_2_GRAY16_2_C   \

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

  659.         const int i2= 2*i;       \

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

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

  662. 

  663. #define YSCALE_YUV_2_RGB2_C(type) \

  664.     YSCALE_YUV_2_PACKED2_C\

  665.     type *r, *b, *g;\

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

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

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

  669. 

  670. #define YSCALE_YUV_2_PACKED1_C \

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

  672.         const int i2= 2*i;\

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

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

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

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

  677. 

  678. #define YSCALE_YUV_2_GRAY16_1_C \

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

  680.         const int i2= 2*i;\

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

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

  683. 

  684. #define YSCALE_YUV_2_RGB1_C(type) \

  685.     YSCALE_YUV_2_PACKED1_C\

  686.     type *r, *b, *g;\

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

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

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

  690. 

  691. #define YSCALE_YUV_2_PACKED1B_C \

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

  693.         const int i2= 2*i;\

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

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

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

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

  698. 

  699. #define YSCALE_YUV_2_RGB1B_C(type) \

  700.     YSCALE_YUV_2_PACKED1B_C\

  701.     type *r, *b, *g;\

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

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

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

  705. 

  706. #define YSCALE_YUV_2_MONO2_C \

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

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

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

  710.         int acc;\

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

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

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

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

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

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

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

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

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

  720.         dest++;\

  721.     }\

  722. 

  723. 

  724. #define YSCALE_YUV_2_MONOX_C \

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

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

  727.     int acc=0;\

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

  729.         int j;\

  730.         int Y1=1<<18;\

  731.         int Y2=1<<18;\

  732. \

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

  734.         {\

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

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

  737.         }\

  738.         Y1>>=19;\

  739.         Y2>>=19;\

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

  741.         {\

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

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

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

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

  746.         }\

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

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

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

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

  751.             dest++;\

  752.         }\

  753.     }

  754. 

  755. 

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

  757.     switch(c->dstFormat)\

  758.     {\

  759.     case PIX_FMT_RGB32:\

  760.     case PIX_FMT_BGR32:\

  761.     case PIX_FMT_RGB32_1:\

  762.     case PIX_FMT_BGR32_1:\

  763.         func(uint32_t)\

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

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

  766.         }                \

  767.         break;\

  768.     case PIX_FMT_RGB24:\

  769.         func(uint8_t)\

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

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

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

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

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

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

  776.             dest+=6;\

  777.         }\

  778.         break;\

  779.     case PIX_FMT_BGR24:\

  780.         func(uint8_t)\

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

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

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

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

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

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

  787.             dest+=6;\

  788.         }\

  789.         break;\

  790.     case PIX_FMT_RGB565:\

  791.     case PIX_FMT_BGR565:\

  792.         {\

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

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

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

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

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

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

  799.             func(uint16_t)\

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

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

  802.             }\

  803.         }\

  804.         break;\

  805.     case PIX_FMT_RGB555:\

  806.     case PIX_FMT_BGR555:\

  807.         {\

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

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

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

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

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

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

  814.             func(uint16_t)\

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

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

  817.             }\

  818.         }\

  819.         break;\

  820.     case PIX_FMT_RGB8:\

  821.     case PIX_FMT_BGR8:\

  822.         {\

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

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

  825.             func(uint8_t)\

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

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

  828.             }\

  829.         }\

  830.         break;\

  831.     case PIX_FMT_RGB4:\

  832.     case PIX_FMT_BGR4:\

  833.         {\

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

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

  836.             func(uint8_t)\

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

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

  839.             }\

  840.         }\

  841.         break;\

  842.     case PIX_FMT_RGB4_BYTE:\

  843.     case PIX_FMT_BGR4_BYTE:\

  844.         {\

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

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

  847.             func(uint8_t)\

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

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

  850.             }\

  851.         }\

  852.         break;\

  853.     case PIX_FMT_MONOBLACK:\

  854.     case PIX_FMT_MONOWHITE:\

  855.         {\

  856.             func_monoblack\

  857.         }\

  858.         break;\

  859.     case PIX_FMT_YUYV422:\

  860.         func2\

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

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

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

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

  865.         }                \

  866.         break;\

  867.     case PIX_FMT_UYVY422:\

  868.         func2\

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

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

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

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

  873.         }                \

  874.         break;\

  875.     case PIX_FMT_GRAY16BE:\

  876.         func_g16\

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

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

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

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

  881.         }                \

  882.         break;\

  883.     case PIX_FMT_GRAY16LE:\

  884.         func_g16\

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

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

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

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

  889.         }                \

  890.         break;\

  891.     }\

  892. 

  893. 

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

  895.                                   int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,

  896.                                   uint8_t *dest, int dstW, int y)

  897. {

  898.     int i;

  899.     YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)

  900. }

  901. 

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

  903.                                     int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,

  904.                                     uint8_t *dest, int dstW, int y)

  905. {

  906.     int i;

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

  908.     int aidx= 3;

  909. 

  910.     switch(c->dstFormat){

  911.     case PIX_FMT_ARGB:

  912.         dest++;

  913.         aidx= 0;

  914.     case PIX_FMT_RGB24:

  915.         aidx--;

  916.     case PIX_FMT_RGBA:

  917.         YSCALE_YUV_2_RGBX_FULL_C(1<<21)

  918.             dest[aidx]= 0;

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

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

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

  922.             dest+= step;

  923.         }

  924.         break;

  925.     case PIX_FMT_ABGR:

  926.         dest++;

  927.         aidx= 0;

  928.     case PIX_FMT_BGR24:

  929.         aidx--;

  930.     case PIX_FMT_BGRA:

  931.         YSCALE_YUV_2_RGBX_FULL_C(1<<21)

  932.             dest[aidx]= 0;

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

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

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

  936.             dest+= step;

  937.         }

  938.         break;

  939.     default:

  940.         assert(0);

  941.     }

  942. }

  943. 

  944. //Note: we have C, X86, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one

  945. //Plain C versions

  946. #if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT) || !defined(CONFIG_GPL)

  947. #define COMPILE_C

  948. #endif

  949. 

  950. #ifdef ARCH_POWERPC

  951. #if (defined (HAVE_ALTIVEC) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)

  952. #define COMPILE_ALTIVEC

  953. #endif //HAVE_ALTIVEC

  954. #endif //ARCH_POWERPC

  955. 

  956. #if defined(ARCH_X86)

  957. 

  958. #if ((defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)

  959. #define COMPILE_MMX

  960. #endif

  961. 

  962. #if (defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)

  963. #define COMPILE_MMX2

  964. #endif

  965. 

  966. #if ((defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)

  967. #define COMPILE_3DNOW

  968. #endif

  969. #endif //ARCH_X86 || ARCH_X86_64

  970. 

  971. #undef HAVE_MMX

  972. #undef HAVE_MMX2

  973. #undef HAVE_3DNOW

  974. 

  975. #ifdef COMPILE_C

  976. #undef HAVE_MMX

  977. #undef HAVE_MMX2

  978. #undef HAVE_3DNOW

  979. #undef HAVE_ALTIVEC

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

  981. #include "swscale_template.c"

  982. #endif

  983. 

  984. #ifdef COMPILE_ALTIVEC

  985. #undef RENAME

  986. #define HAVE_ALTIVEC

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

  988. #include "swscale_template.c"

  989. #endif

  990. 

  991. #if defined(ARCH_X86)

  992. 

  993. //X86 versions

  994. /*

  995. #undef RENAME

  996. #undef HAVE_MMX

  997. #undef HAVE_MMX2

  998. #undef HAVE_3DNOW

  999. #define ARCH_X86

  1000. #define RENAME(a) a ## _X86

  1001. #include "swscale_template.c"

  1002. */

  1003. //MMX versions

  1004. #ifdef COMPILE_MMX

  1005. #undef RENAME

  1006. #define HAVE_MMX

  1007. #undef HAVE_MMX2

  1008. #undef HAVE_3DNOW

  1009. #define RENAME(a) a ## _MMX

  1010. #include "swscale_template.c"

  1011. #endif

  1012. 

  1013. //MMX2 versions

  1014. #ifdef COMPILE_MMX2

  1015. #undef RENAME

  1016. #define HAVE_MMX

  1017. #define HAVE_MMX2

  1018. #undef HAVE_3DNOW

  1019. #define RENAME(a) a ## _MMX2

  1020. #include "swscale_template.c"

  1021. #endif

  1022. 

  1023. //3DNOW versions

  1024. #ifdef COMPILE_3DNOW

  1025. #undef RENAME

  1026. #define HAVE_MMX

  1027. #undef HAVE_MMX2

  1028. #define HAVE_3DNOW

  1029. #define RENAME(a) a ## _3DNow

  1030. #include "swscale_template.c"

  1031. #endif

  1032. 

  1033. #endif //ARCH_X86 || ARCH_X86_64

  1034. 

  1035. // minor note: the HAVE_xyz is messed up after that line so don't use it

  1036. 

  1037. static double getSplineCoeff(double a, double b, double c, double d, double dist)

  1038. {

  1039. //    printf("%f %f %f %f %f\n", a,b,c,d,dist);

  1040.     if (dist<=1.0)      return ((d*dist + c)*dist + b)*dist +a;

  1041.     else                return getSplineCoeff(        0.0,

  1042.                                              b+ 2.0*c + 3.0*d,

  1043.                                                     c + 3.0*d,

  1044.                                             -b- 3.0*c - 6.0*d,

  1045.                                             dist-1.0);

  1046. }

  1047. 

  1048. static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,

  1049.                              int srcW, int dstW, int filterAlign, int one, int flags,

  1050.                              SwsVector *srcFilter, SwsVector *dstFilter, double param[2])

  1051. {

  1052.     int i;

  1053.     int filterSize;

  1054.     int filter2Size;

  1055.     int minFilterSize;

  1056.     int64_t *filter=NULL;

  1057.     int64_t *filter2=NULL;

  1058.     const int64_t fone= 1LL<<54;

  1059.     int ret= -1;

  1060. #if defined(ARCH_X86)

  1061.     if (flags & SWS_CPU_CAPS_MMX)

  1062.         asm volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)

  1063. #endif

  1064. 

  1065.     // Note the +1 is for the MMXscaler which reads over the end

  1066.     *filterPos = av_malloc((dstW+1)*sizeof(int16_t));

  1067. 

  1068.     if (FFABS(xInc - 0x10000) <10) // unscaled

  1069.     {

  1070.         int i;

  1071.         filterSize= 1;

  1072.         filter= av_mallocz(dstW*sizeof(*filter)*filterSize);

  1073. 

  1074.         for (i=0; i<dstW; i++)

  1075.         {

  1076.             filter[i*filterSize]= fone;

  1077.             (*filterPos)[i]=i;

  1078.         }

  1079. 

  1080.     }

  1081.     else if (flags&SWS_POINT) // lame looking point sampling mode

  1082.     {

  1083.         int i;

  1084.         int xDstInSrc;

  1085.         filterSize= 1;

  1086.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1087. 

  1088.         xDstInSrc= xInc/2 - 0x8000;

  1089.         for (i=0; i<dstW; i++)

  1090.         {

  1091.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1092. 

  1093.             (*filterPos)[i]= xx;

  1094.             filter[i]= fone;

  1095.             xDstInSrc+= xInc;

  1096.         }

  1097.     }

  1098.     else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale

  1099.     {

  1100.         int i;

  1101.         int xDstInSrc;

  1102.         if      (flags&SWS_BICUBIC) filterSize= 4;

  1103.         else if (flags&SWS_X      ) filterSize= 4;

  1104.         else                        filterSize= 2; // SWS_BILINEAR / SWS_AREA

  1105.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1106. 

  1107.         xDstInSrc= xInc/2 - 0x8000;

  1108.         for (i=0; i<dstW; i++)

  1109.         {

  1110.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1111.             int j;

  1112. 

  1113.             (*filterPos)[i]= xx;

  1114.                 //Bilinear upscale / linear interpolate / Area averaging

  1115.                 for (j=0; j<filterSize; j++)

  1116.                 {

  1117.                     int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);

  1118.                     if (coeff<0) coeff=0;

  1119.                     filter[i*filterSize + j]= coeff;

  1120.                     xx++;

  1121.                 }

  1122.             xDstInSrc+= xInc;

  1123.         }

  1124.     }

  1125.     else

  1126.     {

  1127.         int xDstInSrc;

  1128.         int sizeFactor;

  1129. 

  1130.         if      (flags&SWS_BICUBIC)      sizeFactor=  4;

  1131.         else if (flags&SWS_X)            sizeFactor=  8;

  1132.         else if (flags&SWS_AREA)         sizeFactor=  1; //downscale only, for upscale it is bilinear

  1133.         else if (flags&SWS_GAUSS)        sizeFactor=  8;   // infinite ;)

  1134.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;

  1135.         else if (flags&SWS_SINC)         sizeFactor= 20; // infinite ;)

  1136.         else if (flags&SWS_SPLINE)       sizeFactor= 20;  // infinite ;)

  1137.         else if (flags&SWS_BILINEAR)     sizeFactor=  2;

  1138.         else {

  1139.             sizeFactor= 0; //GCC warning killer

  1140.             assert(0);

  1141.         }

  1142. 

  1143.         if (xInc <= 1<<16)      filterSize= 1 + sizeFactor; // upscale

  1144.         else                    filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;

  1145. 

  1146.         if (filterSize > srcW-2) filterSize=srcW-2;

  1147. 

  1148.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1149. 

  1150.         xDstInSrc= xInc - 0x10000;

  1151.         for (i=0; i<dstW; i++)

  1152.         {

  1153.             int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);

  1154.             int j;

  1155.             (*filterPos)[i]= xx;

  1156.             for (j=0; j<filterSize; j++)

  1157.             {

  1158.                 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;

  1159.                 double floatd;

  1160.                 int64_t coeff;

  1161. 

  1162.                 if (xInc > 1<<16)

  1163.                     d= d*dstW/srcW;

  1164.                 floatd= d * (1.0/(1<<30));

  1165. 

  1166.                 if (flags & SWS_BICUBIC)

  1167.                 {

  1168.                     int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] :   0) * (1<<24);

  1169.                     int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);

  1170.                     int64_t dd = ( d*d)>>30;

  1171.                     int64_t ddd= (dd*d)>>30;

  1172. 

  1173.                     if      (d < 1LL<<30)

  1174.                         coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);

  1175.                     else if (d < 1LL<<31)

  1176.                         coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);

  1177.                     else

  1178.                         coeff=0.0;

  1179.                     coeff *= fone>>(30+24);

  1180.                 }

  1181. /*                else if (flags & SWS_X)

  1182.                 {

  1183.                     double p= param ? param*0.01 : 0.3;

  1184.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1185.                     coeff*= pow(2.0, - p*d*d);

  1186.                 }*/

  1187.                 else if (flags & SWS_X)

  1188.                 {

  1189.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1190.                     double c;

  1191. 

  1192.                     if (floatd<1.0)

  1193.                         c = cos(floatd*PI);

  1194.                     else

  1195.                         c=-1.0;

  1196.                     if (c<0.0)      c= -pow(-c, A);

  1197.                     else            c=  pow( c, A);

  1198.                     coeff= (c*0.5 + 0.5)*fone;

  1199.                 }

  1200.                 else if (flags & SWS_AREA)

  1201.                 {

  1202.                     int64_t d2= d - (1<<29);

  1203.                     if      (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));

  1204.                     else if (d2*xInc <  (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));

  1205.                     else coeff=0.0;

  1206.                     coeff *= fone>>(30+16);

  1207.                 }

  1208.                 else if (flags & SWS_GAUSS)

  1209.                 {

  1210.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1211.                     coeff = (pow(2.0, - p*floatd*floatd))*fone;

  1212.                 }

  1213.                 else if (flags & SWS_SINC)

  1214.                 {

  1215.                     coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;

  1216.                 }

  1217.                 else if (flags & SWS_LANCZOS)

  1218.                 {

  1219.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1220.                     coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;

  1221.                     if (floatd>p) coeff=0;

  1222.                 }

  1223.                 else if (flags & SWS_BILINEAR)

  1224.                 {

  1225.                     coeff= (1<<30) - d;

  1226.                     if (coeff<0) coeff=0;

  1227.                     coeff *= fone >> 30;

  1228.                 }

  1229.                 else if (flags & SWS_SPLINE)

  1230.                 {

  1231.                     double p=-2.196152422706632;

  1232.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, d) * fone;

  1233.                 }

  1234.                 else {

  1235.                     coeff= 0.0; //GCC warning killer

  1236.                     assert(0);

  1237.                 }

  1238. 

  1239.                 filter[i*filterSize + j]= coeff;

  1240.                 xx++;

  1241.             }

  1242.             xDstInSrc+= 2*xInc;

  1243.         }

  1244.     }

  1245. 

  1246.     /* apply src & dst Filter to filter -> filter2

  1247.        av_free(filter);

  1248.     */

  1249.     assert(filterSize>0);

  1250.     filter2Size= filterSize;

  1251.     if (srcFilter) filter2Size+= srcFilter->length - 1;

  1252.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1253.     assert(filter2Size>0);

  1254.     filter2= av_mallocz(filter2Size*dstW*sizeof(*filter2));

  1255. 

  1256.     for (i=0; i<dstW; i++)

  1257.     {

  1258.         int j, k;

  1259. 

  1260.         if(srcFilter){

  1261.             for (k=0; k<srcFilter->length; k++){

  1262.                 for (j=0; j<filterSize; j++)

  1263.                     filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];

  1264.             }

  1265.         }else{

  1266.             for (j=0; j<filterSize; j++)

  1267.                 filter2[i*filter2Size + j]= filter[i*filterSize + j];

  1268.         }

  1269.         //FIXME dstFilter

  1270. 

  1271.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1272.     }

  1273.     av_freep(&filter);

  1274. 

  1275.     /* try to reduce the filter-size (step1 find size and shift left) */

  1276.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1277.     minFilterSize= 0;

  1278.     for (i=dstW-1; i>=0; i--)

  1279.     {

  1280.         int min= filter2Size;

  1281.         int j;

  1282.         int64_t cutOff=0.0;

  1283. 

  1284.         /* get rid off near zero elements on the left by shifting left */

  1285.         for (j=0; j<filter2Size; j++)

  1286.         {

  1287.             int k;

  1288.             cutOff += FFABS(filter2[i*filter2Size]);

  1289. 

  1290.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1291. 

  1292.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1293.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1294. 

  1295.             // Move filter coeffs left

  1296.             for (k=1; k<filter2Size; k++)

  1297.                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1298.             filter2[i*filter2Size + k - 1]= 0;

  1299.             (*filterPos)[i]++;

  1300.         }

  1301. 

  1302.         cutOff=0;

  1303.         /* count near zeros on the right */

  1304.         for (j=filter2Size-1; j>0; j--)

  1305.         {

  1306.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1307. 

  1308.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1309.             min--;

  1310.         }

  1311. 

  1312.         if (min>minFilterSize) minFilterSize= min;

  1313.     }

  1314. 

  1315.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1316.         // we can handle the special case 4,

  1317.         // so we don't want to go to the full 8

  1318.         if (minFilterSize < 5)

  1319.             filterAlign = 4;

  1320. 

  1321.         // we really don't want to waste our time

  1322.         // doing useless computation, so fall-back on

  1323.         // the scalar C code for very small filter.

  1324.         // vectorizing is worth it only if you have

  1325.         // decent-sized vector.

  1326.         if (minFilterSize < 3)

  1327.             filterAlign = 1;

  1328.     }

  1329. 

  1330.     if (flags & SWS_CPU_CAPS_MMX) {

  1331.         // special case for unscaled vertical filtering

  1332.         if (minFilterSize == 1 && filterAlign == 2)

  1333.             filterAlign= 1;

  1334.     }

  1335. 

  1336.     assert(minFilterSize > 0);

  1337.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1338.     assert(filterSize > 0);

  1339.     filter= av_malloc(filterSize*dstW*sizeof(*filter));

  1340.     if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)

  1341.         goto error;

  1342.     *outFilterSize= filterSize;

  1343. 

  1344.     if (flags&SWS_PRINT_INFO)

  1345.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1346.     /* try to reduce the filter-size (step2 reduce it) */

  1347.     for (i=0; i<dstW; i++)

  1348.     {

  1349.         int j;

  1350. 

  1351.         for (j=0; j<filterSize; j++)

  1352.         {

  1353.             if (j>=filter2Size) filter[i*filterSize + j]= 0;

  1354.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1355.             if((flags & SWS_BITEXACT) && j>=minFilterSize)

  1356.                 filter[i*filterSize + j]= 0;

  1357.         }

  1358.     }

  1359. 

  1360. 

  1361.     //FIXME try to align filterpos if possible

  1362. 

  1363.     //fix borders

  1364.     for (i=0; i<dstW; i++)

  1365.     {

  1366.         int j;

  1367.         if ((*filterPos)[i] < 0)

  1368.         {

  1369.             // Move filter coeffs left to compensate for filterPos

  1370.             for (j=1; j<filterSize; j++)

  1371.             {

  1372.                 int left= FFMAX(j + (*filterPos)[i], 0);

  1373.                 filter[i*filterSize + left] += filter[i*filterSize + j];

  1374.                 filter[i*filterSize + j]=0;

  1375.             }

  1376.             (*filterPos)[i]= 0;

  1377.         }

  1378. 

  1379.         if ((*filterPos)[i] + filterSize > srcW)

  1380.         {

  1381.             int shift= (*filterPos)[i] + filterSize - srcW;

  1382.             // Move filter coeffs right to compensate for filterPos

  1383.             for (j=filterSize-2; j>=0; j--)

  1384.             {

  1385.                 int right= FFMIN(j + shift, filterSize-1);

  1386.                 filter[i*filterSize +right] += filter[i*filterSize +j];

  1387.                 filter[i*filterSize +j]=0;

  1388.             }

  1389.             (*filterPos)[i]= srcW - filterSize;

  1390.         }

  1391.     }

  1392. 

  1393.     // Note the +1 is for the MMXscaler which reads over the end

  1394.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1395.     *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));

  1396. 

  1397.     /* Normalize & Store in outFilter */

  1398.     for (i=0; i<dstW; i++)

  1399.     {

  1400.         int j;

  1401.         int64_t error=0;

  1402.         int64_t sum=0;

  1403. 

  1404.         for (j=0; j<filterSize; j++)

  1405.         {

  1406.             sum+= filter[i*filterSize + j];

  1407.         }

  1408.         sum= (sum + one/2)/ one;

  1409.         for (j=0; j<*outFilterSize; j++)

  1410.         {

  1411.             int64_t v= filter[i*filterSize + j] + error;

  1412.             int intV= ROUNDED_DIV(v, sum);

  1413.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1414.             error= v - intV*sum;

  1415.         }

  1416.     }

  1417. 

  1418.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1419.     for (i=0; i<*outFilterSize; i++)

  1420.     {

  1421.         int j= dstW*(*outFilterSize);

  1422.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1423.     }

  1424. 

  1425.     ret=0;

  1426. error:

  1427.     av_free(filter);

  1428.     av_free(filter2);

  1429.     return ret;

  1430. }

  1431. 

  1432. #ifdef COMPILE_MMX2

  1433. static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1434. {

  1435.     uint8_t *fragmentA;

  1436.     long imm8OfPShufW1A;

  1437.     long imm8OfPShufW2A;

  1438.     long fragmentLengthA;

  1439.     uint8_t *fragmentB;

  1440.     long imm8OfPShufW1B;

  1441.     long imm8OfPShufW2B;

  1442.     long fragmentLengthB;

  1443.     int fragmentPos;

  1444. 

  1445.     int xpos, i;

  1446. 

  1447.     // create an optimized horizontal scaling routine

  1448. 

  1449.     //code fragment

  1450. 

  1451.     asm volatile(

  1452.         "jmp                         9f                 \n\t"

  1453.     // Begin

  1454.         "0:                                             \n\t"

  1455.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1456.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1457.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1458.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1459.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1460.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1461.         "1:                                             \n\t"

  1462.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1463.         "2:                                             \n\t"

  1464.         "psubw                    %%mm1, %%mm0          \n\t"

  1465.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1466.         "pmullw                   %%mm3, %%mm0          \n\t"

  1467.         "psllw                       $7, %%mm1          \n\t"

  1468.         "paddw                    %%mm1, %%mm0          \n\t"

  1469. 

  1470.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1471. 

  1472.         "add                         $8, %%"REG_a"      \n\t"

  1473.     // End

  1474.         "9:                                             \n\t"

  1475. //        "int $3                                         \n\t"

  1476.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1477.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1478.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1479.         "dec                         %1                 \n\t"

  1480.         "dec                         %2                 \n\t"

  1481.         "sub                         %0, %1             \n\t"

  1482.         "sub                         %0, %2             \n\t"

  1483.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1484.         "sub                         %0, %3             \n\t"

  1485. 

  1486. 

  1487.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1488.         "=r" (fragmentLengthA)

  1489.     );

  1490. 

  1491.     asm volatile(

  1492.         "jmp                         9f                 \n\t"

  1493.     // Begin

  1494.         "0:                                             \n\t"

  1495.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1496.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1497.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1498.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1499.         "1:                                             \n\t"

  1500.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1501.         "2:                                             \n\t"

  1502.         "psubw                    %%mm1, %%mm0          \n\t"

  1503.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1504.         "pmullw                   %%mm3, %%mm0          \n\t"

  1505.         "psllw                       $7, %%mm1          \n\t"

  1506.         "paddw                    %%mm1, %%mm0          \n\t"

  1507. 

  1508.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1509. 

  1510.         "add                         $8, %%"REG_a"      \n\t"

  1511.     // End

  1512.         "9:                                             \n\t"

  1513. //        "int                       $3                   \n\t"

  1514.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1515.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1516.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1517.         "dec                         %1                 \n\t"

  1518.         "dec                         %2                 \n\t"

  1519.         "sub                         %0, %1             \n\t"

  1520.         "sub                         %0, %2             \n\t"

  1521.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1522.         "sub                         %0, %3             \n\t"

  1523. 

  1524. 

  1525.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1526.         "=r" (fragmentLengthB)

  1527.     );

  1528. 

  1529.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1530.     fragmentPos=0;

  1531. 

  1532.     for (i=0; i<dstW/numSplits; i++)

  1533.     {

  1534.         int xx=xpos>>16;

  1535. 

  1536.         if ((i&3) == 0)

  1537.         {

  1538.             int a=0;

  1539.             int b=((xpos+xInc)>>16) - xx;

  1540.             int c=((xpos+xInc*2)>>16) - xx;

  1541.             int d=((xpos+xInc*3)>>16) - xx;

  1542. 

  1543.             filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;

  1544.             filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1545.             filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1546.             filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1547.             filterPos[i/2]= xx;

  1548. 

  1549.             if (d+1<4)

  1550.             {

  1551.                 int maxShift= 3-(d+1);

  1552.                 int shift=0;

  1553. 

  1554.                 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);

  1555. 

  1556.                 funnyCode[fragmentPos + imm8OfPShufW1B]=

  1557.                     (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);

  1558.                 funnyCode[fragmentPos + imm8OfPShufW2B]=

  1559.                     a | (b<<2) | (c<<4) | (d<<6);

  1560. 

  1561.                 if (i+3>=dstW) shift=maxShift; //avoid overread

  1562.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1563. 

  1564.                 if (shift && i>=shift)

  1565.                 {

  1566.                     funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;

  1567.                     funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;

  1568.                     filterPos[i/2]-=shift;

  1569.                 }

  1570. 

  1571.                 fragmentPos+= fragmentLengthB;

  1572.             }

  1573.             else

  1574.             {

  1575.                 int maxShift= 3-d;

  1576.                 int shift=0;

  1577. 

  1578.                 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);

  1579. 

  1580.                 funnyCode[fragmentPos + imm8OfPShufW1A]=

  1581.                 funnyCode[fragmentPos + imm8OfPShufW2A]=

  1582.                     a | (b<<2) | (c<<4) | (d<<6);

  1583. 

  1584.                 if (i+4>=dstW) shift=maxShift; //avoid overread

  1585.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align

  1586. 

  1587.                 if (shift && i>=shift)

  1588.                 {

  1589.                     funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;

  1590.                     funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;

  1591.                     filterPos[i/2]-=shift;

  1592.                 }

  1593. 

  1594.                 fragmentPos+= fragmentLengthA;

  1595.             }

  1596. 

  1597.             funnyCode[fragmentPos]= RET;

  1598.         }

  1599.         xpos+=xInc;

  1600.     }

  1601.     filterPos[i/2]= xpos>>16; // needed to jump to the next part

  1602. }

  1603. #endif /* COMPILE_MMX2 */

  1604. 

  1605. static void globalInit(void){

  1606.     // generating tables:

  1607.     int i;

  1608.     for (i=0; i<768; i++){

  1609.         int c= av_clip_uint8(i-256);

  1610.         clip_table[i]=c;

  1611.     }

  1612. }

  1613. 

  1614. static SwsFunc getSwsFunc(int flags){

  1615. 

  1616. #if defined(RUNTIME_CPUDETECT) && defined (CONFIG_GPL)

  1617. #if defined(ARCH_X86)

  1618.     // ordered per speed fastest first

  1619.     if (flags & SWS_CPU_CAPS_MMX2)

  1620.         return swScale_MMX2;

  1621.     else if (flags & SWS_CPU_CAPS_3DNOW)

  1622.         return swScale_3DNow;

  1623.     else if (flags & SWS_CPU_CAPS_MMX)

  1624.         return swScale_MMX;

  1625.     else

  1626.         return swScale_C;

  1627. 

  1628. #else

  1629. #ifdef ARCH_POWERPC

  1630.     if (flags & SWS_CPU_CAPS_ALTIVEC)

  1631.         return swScale_altivec;

  1632.     else

  1633.         return swScale_C;

  1634. #endif

  1635.     return swScale_C;

  1636. #endif /* defined(ARCH_X86) */

  1637. #else //RUNTIME_CPUDETECT

  1638. #ifdef HAVE_MMX2

  1639.     return swScale_MMX2;

  1640. #elif defined (HAVE_3DNOW)

  1641.     return swScale_3DNow;

  1642. #elif defined (HAVE_MMX)

  1643.     return swScale_MMX;

  1644. #elif defined (HAVE_ALTIVEC)

  1645.     return swScale_altivec;

  1646. #else

  1647.     return swScale_C;

  1648. #endif

  1649. #endif //!RUNTIME_CPUDETECT

  1650. }

  1651. 

  1652. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1653.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1654.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1655.     /* Copy Y plane */

  1656.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1657.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1658.     else

  1659.     {

  1660.         int i;

  1661.         uint8_t *srcPtr= src[0];

  1662.         uint8_t *dstPtr= dst;

  1663.         for (i=0; i<srcSliceH; i++)

  1664.         {

  1665.             memcpy(dstPtr, srcPtr, c->srcW);

  1666.             srcPtr+= srcStride[0];

  1667.             dstPtr+= dstStride[0];

  1668.         }

  1669.     }

  1670.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1671.     if (c->dstFormat == PIX_FMT_NV12)

  1672.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  1673.     else

  1674.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  1675. 

  1676.     return srcSliceH;

  1677. }

  1678. 

  1679. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1680.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1681.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1682. 

  1683.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1684. 

  1685.     return srcSliceH;

  1686. }

  1687. 

  1688. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1689.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1690.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1691. 

  1692.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1693. 

  1694.     return srcSliceH;

  1695. }

  1696. 

  1697. static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1698.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1699.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1700. 

  1701.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1702. 

  1703.     return srcSliceH;

  1704. }

  1705. 

  1706. static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1707.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1708.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1709. 

  1710.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1711. 

  1712.     return srcSliceH;

  1713. }

  1714. 

  1715. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  1716. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1717.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  1718.     const int srcFormat= c->srcFormat;

  1719.     const int dstFormat= c->dstFormat;

  1720.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  1721.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  1722.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1723.     const int dstId= fmt_depth(dstFormat) >> 2;

  1724.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1725. 

  1726.     /* BGR -> BGR */

  1727.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  1728.        || (isRGB(srcFormat) && isRGB(dstFormat))){

  1729.         switch(srcId | (dstId<<4)){

  1730.         case 0x34: conv= rgb16to15; break;

  1731.         case 0x36: conv= rgb24to15; break;

  1732.         case 0x38: conv= rgb32to15; break;

  1733.         case 0x43: conv= rgb15to16; break;

  1734.         case 0x46: conv= rgb24to16; break;

  1735.         case 0x48: conv= rgb32to16; break;

  1736.         case 0x63: conv= rgb15to24; break;

  1737.         case 0x64: conv= rgb16to24; break;

  1738.         case 0x68: conv= rgb32to24; break;

  1739.         case 0x83: conv= rgb15to32; break;

  1740.         case 0x84: conv= rgb16to32; break;

  1741.         case 0x86: conv= rgb24to32; break;

  1742.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1743.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1744.         }

  1745.     }else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  1746.              || (isRGB(srcFormat) && isBGR(dstFormat))){

  1747.         switch(srcId | (dstId<<4)){

  1748.         case 0x33: conv= rgb15tobgr15; break;

  1749.         case 0x34: conv= rgb16tobgr15; break;

  1750.         case 0x36: conv= rgb24tobgr15; break;

  1751.         case 0x38: conv= rgb32tobgr15; break;

  1752.         case 0x43: conv= rgb15tobgr16; break;

  1753.         case 0x44: conv= rgb16tobgr16; break;

  1754.         case 0x46: conv= rgb24tobgr16; break;

  1755.         case 0x48: conv= rgb32tobgr16; break;

  1756.         case 0x63: conv= rgb15tobgr24; break;

  1757.         case 0x64: conv= rgb16tobgr24; break;

  1758.         case 0x66: conv= rgb24tobgr24; break;

  1759.         case 0x68: conv= rgb32tobgr24; break;

  1760.         case 0x83: conv= rgb15tobgr32; break;

  1761.         case 0x84: conv= rgb16tobgr32; break;

  1762.         case 0x86: conv= rgb24tobgr32; break;

  1763.         case 0x88: conv= rgb32tobgr32; break;

  1764.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1765.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1766.         }

  1767.     }else{

  1768.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1769.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1770.     }

  1771. 

  1772.     if(conv)

  1773.     {

  1774.         uint8_t *srcPtr= src[0];

  1775.         if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)

  1776.             srcPtr += ALT32_CORR;

  1777. 

  1778.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  1779.             conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1780.         else

  1781.         {

  1782.             int i;

  1783.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1784. 

  1785.             for (i=0; i<srcSliceH; i++)

  1786.             {

  1787.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1788.                 srcPtr+= srcStride[0];

  1789.                 dstPtr+= dstStride[0];

  1790.             }

  1791.         }

  1792.     }

  1793.     return srcSliceH;

  1794. }

  1795. 

  1796. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1797.                               int srcSliceH, uint8_t* dst[], int dstStride[]){

  1798. 

  1799.     rgb24toyv12(

  1800.         src[0],

  1801.         dst[0]+ srcSliceY    *dstStride[0],

  1802.         dst[1]+(srcSliceY>>1)*dstStride[1],

  1803.         dst[2]+(srcSliceY>>1)*dstStride[2],

  1804.         c->srcW, srcSliceH,

  1805.         dstStride[0], dstStride[1], srcStride[0]);

  1806.     return srcSliceH;

  1807. }

  1808. 

  1809. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1810.                              int srcSliceH, uint8_t* dst[], int dstStride[]){

  1811.     int i;

  1812. 

  1813.     /* copy Y */

  1814.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  1815.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  1816.     else{

  1817.         uint8_t *srcPtr= src[0];

  1818.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1819. 

  1820.         for (i=0; i<srcSliceH; i++)

  1821.         {

  1822.             memcpy(dstPtr, srcPtr, c->srcW);

  1823.             srcPtr+= srcStride[0];

  1824.             dstPtr+= dstStride[0];

  1825.         }

  1826.     }

  1827. 

  1828.     if (c->dstFormat==PIX_FMT_YUV420P){

  1829.         planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);

  1830.         planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);

  1831.     }else{

  1832.         planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);

  1833.         planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);

  1834.     }

  1835.     return srcSliceH;

  1836. }

  1837. 

  1838. /* unscaled copy like stuff (assumes nearly identical formats) */

  1839. static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1840.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  1841. {

  1842.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1843.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1844.     else

  1845.     {

  1846.         int i;

  1847.         uint8_t *srcPtr= src[0];

  1848.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1849.         int length=0;

  1850. 

  1851.         /* universal length finder */

  1852.         while(length+c->srcW <= FFABS(dstStride[0])

  1853.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  1854.         assert(length!=0);

  1855. 

  1856.         for (i=0; i<srcSliceH; i++)

  1857.         {

  1858.             memcpy(dstPtr, srcPtr, length);

  1859.             srcPtr+= srcStride[0];

  1860.             dstPtr+= dstStride[0];

  1861.         }

  1862.     }

  1863.     return srcSliceH;

  1864. }

  1865. 

  1866. static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1867.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  1868. {

  1869.     int plane;

  1870.     for (plane=0; plane<3; plane++)

  1871.     {

  1872.         int length= plane==0 ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1873.         int y=      plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1874.         int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1875. 

  1876.         if ((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)

  1877.         {

  1878.             if (!isGray(c->dstFormat))

  1879.                 memset(dst[plane], 128, dstStride[plane]*height);

  1880.         }

  1881.         else

  1882.         {

  1883.             if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  1884.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  1885.             else

  1886.             {

  1887.                 int i;

  1888.                 uint8_t *srcPtr= src[plane];

  1889.                 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  1890.                 for (i=0; i<height; i++)

  1891.                 {

  1892.                     memcpy(dstPtr, srcPtr, length);

  1893.                     srcPtr+= srcStride[plane];

  1894.                     dstPtr+= dstStride[plane];

  1895.                 }

  1896.             }

  1897.         }

  1898.     }

  1899.     return srcSliceH;

  1900. }

  1901. 

  1902. static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1903.                         int srcSliceH, uint8_t* dst[], int dstStride[]){

  1904. 

  1905.     int length= c->srcW;

  1906.     int y=      srcSliceY;

  1907.     int height= srcSliceH;

  1908.     int i, j;

  1909.     uint8_t *srcPtr= src[0];

  1910.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  1911. 

  1912.     if (!isGray(c->dstFormat)){

  1913.         int height= -((-srcSliceH)>>c->chrDstVSubSample);

  1914.         memset(dst[1], 128, dstStride[1]*height);

  1915.         memset(dst[2], 128, dstStride[2]*height);

  1916.     }

  1917.     if (c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;

  1918.     for (i=0; i<height; i++)

  1919.     {

  1920.         for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  1921.         srcPtr+= srcStride[0];

  1922.         dstPtr+= dstStride[0];

  1923.     }

  1924.     return srcSliceH;

  1925. }

  1926. 

  1927. static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1928.                         int srcSliceH, uint8_t* dst[], int dstStride[]){

  1929. 

  1930.     int length= c->srcW;

  1931.     int y=      srcSliceY;

  1932.     int height= srcSliceH;

  1933.     int i, j;

  1934.     uint8_t *srcPtr= src[0];

  1935.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  1936.     for (i=0; i<height; i++)

  1937.     {

  1938.         for (j=0; j<length; j++)

  1939.         {

  1940.             dstPtr[j<<1] = srcPtr[j];

  1941.             dstPtr[(j<<1)+1] = srcPtr[j];

  1942.         }

  1943.         srcPtr+= srcStride[0];

  1944.         dstPtr+= dstStride[0];

  1945.     }

  1946.     return srcSliceH;

  1947. }

  1948. 

  1949. static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1950.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  1951. 

  1952.     int length= c->srcW;

  1953.     int y=      srcSliceY;

  1954.     int height= srcSliceH;

  1955.     int i, j;

  1956.     uint16_t *srcPtr= (uint16_t*)src[0];

  1957.     uint16_t *dstPtr= (uint16_t*)(dst[0] + dstStride[0]*y/2);

  1958.     for (i=0; i<height; i++)

  1959.     {

  1960.         for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);

  1961.         srcPtr+= srcStride[0]/2;

  1962.         dstPtr+= dstStride[0]/2;

  1963.     }

  1964.     return srcSliceH;

  1965. }

  1966. 

  1967. 

  1968. static void getSubSampleFactors(int *h, int *v, int format){

  1969.     switch(format){

  1970.     case PIX_FMT_UYVY422:

  1971.     case PIX_FMT_YUYV422:

  1972.         *h=1;

  1973.         *v=0;

  1974.         break;

  1975.     case PIX_FMT_YUV420P:

  1976.     case PIX_FMT_YUVA420P:

  1977.     case PIX_FMT_GRAY16BE:

  1978.     case PIX_FMT_GRAY16LE:

  1979.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  1980.     case PIX_FMT_NV12:

  1981.     case PIX_FMT_NV21:

  1982.         *h=1;

  1983.         *v=1;

  1984.         break;

  1985.     case PIX_FMT_YUV440P:

  1986.         *h=0;

  1987.         *v=1;

  1988.         break;

  1989.     case PIX_FMT_YUV410P:

  1990.         *h=2;

  1991.         *v=2;

  1992.         break;

  1993.     case PIX_FMT_YUV444P:

  1994.         *h=0;

  1995.         *v=0;

  1996.         break;

  1997.     case PIX_FMT_YUV422P:

  1998.         *h=1;

  1999.         *v=0;

  2000.         break;

  2001.     case PIX_FMT_YUV411P:

  2002.         *h=2;

  2003.         *v=0;

  2004.         break;

  2005.     default:

  2006.         *h=0;

  2007.         *v=0;

  2008.         break;

  2009.     }

  2010. }

  2011. 

  2012. static uint16_t roundToInt16(int64_t f){

  2013.     int r= (f + (1<<15))>>16;

  2014.          if (r<-0x7FFF) return 0x8000;

  2015.     else if (r> 0x7FFF) return 0x7FFF;

  2016.     else                return r;

  2017. }

  2018. 

  2019. /**

  2020.  * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]

  2021.  * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235

  2022.  * @return -1 if not supported

  2023.  */

  2024. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){

  2025.     int64_t crv =  inv_table[0];

  2026.     int64_t cbu =  inv_table[1];

  2027.     int64_t cgu = -inv_table[2];

  2028.     int64_t cgv = -inv_table[3];

  2029.     int64_t cy  = 1<<16;

  2030.     int64_t oy  = 0;

  2031. 

  2032.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  2033.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  2034. 

  2035.     c->brightness= brightness;

  2036.     c->contrast  = contrast;

  2037.     c->saturation= saturation;

  2038.     c->srcRange  = srcRange;

  2039.     c->dstRange  = dstRange;

  2040.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return 0;

  2041. 

  2042.     c->uOffset=   0x0400040004000400LL;

  2043.     c->vOffset=   0x0400040004000400LL;

  2044. 

  2045.     if (!srcRange){

  2046.         cy= (cy*255) / 219;

  2047.         oy= 16<<16;

  2048.     }else{

  2049.         crv= (crv*224) / 255;

  2050.         cbu= (cbu*224) / 255;

  2051.         cgu= (cgu*224) / 255;

  2052.         cgv= (cgv*224) / 255;

  2053.     }

  2054. 

  2055.     cy = (cy *contrast             )>>16;

  2056.     crv= (crv*contrast * saturation)>>32;

  2057.     cbu= (cbu*contrast * saturation)>>32;

  2058.     cgu= (cgu*contrast * saturation)>>32;

  2059.     cgv= (cgv*contrast * saturation)>>32;

  2060. 

  2061.     oy -= 256*brightness;

  2062. 

  2063.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  2064.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  2065.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  2066.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  2067.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  2068.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  2069. 

  2070.     c->yuv2rgb_y_coeff  = (int16_t)roundToInt16(cy <<13);

  2071.     c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);

  2072.     c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);

  2073.     c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);

  2074.     c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);

  2075.     c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);

  2076. 

  2077.     yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  2078.     //FIXME factorize

  2079. 

  2080. #ifdef COMPILE_ALTIVEC

  2081.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  2082.         yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);

  2083. #endif

  2084.     return 0;

  2085. }

  2086. 

  2087. /**

  2088.  * @return -1 if not supported

  2089.  */

  2090. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){

  2091.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2092. 

  2093.     *inv_table = c->srcColorspaceTable;

  2094.     *table     = c->dstColorspaceTable;

  2095.     *srcRange  = c->srcRange;

  2096.     *dstRange  = c->dstRange;

  2097.     *brightness= c->brightness;

  2098.     *contrast  = c->contrast;

  2099.     *saturation= c->saturation;

  2100. 

  2101.     return 0;

  2102. }

  2103. 

  2104. static int handle_jpeg(int *format)

  2105. {

  2106.     switch (*format) {

  2107.         case PIX_FMT_YUVJ420P:

  2108.             *format = PIX_FMT_YUV420P;

  2109.             return 1;

  2110.         case PIX_FMT_YUVJ422P:

  2111.             *format = PIX_FMT_YUV422P;

  2112.             return 1;

  2113.         case PIX_FMT_YUVJ444P:

  2114.             *format = PIX_FMT_YUV444P;

  2115.             return 1;

  2116.         case PIX_FMT_YUVJ440P:

  2117.             *format = PIX_FMT_YUV440P;

  2118.             return 1;

  2119.         default:

  2120.             return 0;

  2121.     }

  2122. }

  2123. 

  2124. SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,

  2125.                            SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){

  2126. 

  2127.     SwsContext *c;

  2128.     int i;

  2129.     int usesVFilter, usesHFilter;

  2130.     int unscaled, needsDither;

  2131.     int srcRange, dstRange;

  2132.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2133. #if defined(ARCH_X86)

  2134.     if (flags & SWS_CPU_CAPS_MMX)

  2135.         asm volatile("emms\n\t"::: "memory");

  2136. #endif

  2137. 

  2138. #if !defined(RUNTIME_CPUDETECT) || !defined (CONFIG_GPL) //ensure that the flags match the compiled variant if cpudetect is off

  2139.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2140. #ifdef HAVE_MMX2

  2141.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2142. #elif defined (HAVE_3DNOW)

  2143.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2144. #elif defined (HAVE_MMX)

  2145.     flags |= SWS_CPU_CAPS_MMX;

  2146. #elif defined (HAVE_ALTIVEC)

  2147.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2148. #elif defined (ARCH_BFIN)

  2149.     flags |= SWS_CPU_CAPS_BFIN;

  2150. #endif

  2151. #endif /* RUNTIME_CPUDETECT */

  2152.     if (clip_table[512] != 255) globalInit();

  2153.     if (!rgb15to16) sws_rgb2rgb_init(flags);

  2154. 

  2155.     unscaled = (srcW == dstW && srcH == dstH);

  2156.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2157.         && (fmt_depth(dstFormat))<24

  2158.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2159. 

  2160.     srcRange = handle_jpeg(&srcFormat);

  2161.     dstRange = handle_jpeg(&dstFormat);

  2162. 

  2163.     if (!isSupportedIn(srcFormat))

  2164.     {

  2165.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));

  2166.         return NULL;

  2167.     }

  2168.     if (!isSupportedOut(dstFormat))

  2169.     {

  2170.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));

  2171.         return NULL;

  2172.     }

  2173. 

  2174.     i= flags & ( SWS_POINT

  2175.                 |SWS_AREA

  2176.                 |SWS_BILINEAR

  2177.                 |SWS_FAST_BILINEAR

  2178.                 |SWS_BICUBIC

  2179.                 |SWS_X

  2180.                 |SWS_GAUSS

  2181.                 |SWS_LANCZOS

  2182.                 |SWS_SINC

  2183.                 |SWS_SPLINE

  2184.                 |SWS_BICUBLIN);

  2185.     if(!i || (i & (i-1)))

  2186.     {

  2187.         av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be choosen\n");

  2188.         return NULL;

  2189.     }

  2190. 

  2191.     /* sanity check */

  2192.     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

  2193.     {

  2194.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2195.                srcW, srcH, dstW, dstH);

  2196.         return NULL;

  2197.     }

  2198.     if(srcW > VOFW || dstW > VOFW){

  2199.         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile time max width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");

  2200.         return NULL;

  2201.     }

  2202. 

  2203.     if (!dstFilter) dstFilter= &dummyFilter;

  2204.     if (!srcFilter) srcFilter= &dummyFilter;

  2205. 

  2206.     c= av_mallocz(sizeof(SwsContext));

  2207. 

  2208.     c->av_class = &sws_context_class;

  2209.     c->srcW= srcW;

  2210.     c->srcH= srcH;

  2211.     c->dstW= dstW;

  2212.     c->dstH= dstH;

  2213.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2214.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2215.     c->flags= flags;

  2216.     c->dstFormat= dstFormat;

  2217.     c->srcFormat= srcFormat;

  2218.     c->vRounder= 4* 0x0001000100010001ULL;

  2219. 

  2220.     usesHFilter= usesVFilter= 0;

  2221.     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;

  2222.     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;

  2223.     if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;

  2224.     if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;

  2225.     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;

  2226.     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;

  2227.     if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;

  2228.     if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;

  2229. 

  2230.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2231.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2232. 

  2233.     // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation

  2234.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2235. 

  2236.     // drop some chroma lines if the user wants it

  2237.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2238.     c->chrSrcVSubSample+= c->vChrDrop;

  2239. 

  2240.     // drop every 2. pixel for chroma calculation unless user wants full chroma

  2241.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2242.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2243.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2244.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE

  2245.       && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2246.         c->chrSrcHSubSample=1;

  2247. 

  2248.     if (param){

  2249.         c->param[0] = param[0];

  2250.         c->param[1] = param[1];

  2251.     }else{

  2252.         c->param[0] =

  2253.         c->param[1] = SWS_PARAM_DEFAULT;

  2254.     }

  2255. 

  2256.     c->chrIntHSubSample= c->chrDstHSubSample;

  2257.     c->chrIntVSubSample= c->chrSrcVSubSample;

  2258. 

  2259.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2260.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2261.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2262.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2263.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2264. 

  2265.     sws_setColorspaceDetails(c, Inverse_Table_6_9[SWS_CS_DEFAULT], srcRange, Inverse_Table_6_9[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);

  2266. 

  2267.     /* unscaled special Cases */

  2268.     if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat)))

  2269.     {

  2270.         /* yv12_to_nv12 */

  2271.         if (srcFormat == PIX_FMT_YUV420P && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))

  2272.         {

  2273.             c->swScale= PlanarToNV12Wrapper;

  2274.         }

  2275. #ifdef CONFIG_GPL

  2276.         /* yuv2bgr */

  2277.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P) && (isBGR(dstFormat) || isRGB(dstFormat))

  2278.             && !(flags & SWS_ACCURATE_RND))

  2279.         {

  2280.             c->swScale= yuv2rgb_get_func_ptr(c);

  2281.         }

  2282. #endif

  2283. 

  2284.         if (srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_BITEXACT))

  2285.         {

  2286.             c->swScale= yvu9toyv12Wrapper;

  2287.         }

  2288. 

  2289.         /* bgr24toYV12 */

  2290.         if (srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_ACCURATE_RND))

  2291.             c->swScale= bgr24toyv12Wrapper;

  2292. 

  2293.         /* rgb/bgr -> rgb/bgr (no dither needed forms) */

  2294.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2295.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2296.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2297.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2298.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2299.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2300.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2301.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2302.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2303.            && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  2304.                                              && dstFormat != PIX_FMT_RGB32_1

  2305.                                              && dstFormat != PIX_FMT_BGR32_1

  2306.            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2307.              c->swScale= rgb2rgbWrapper;

  2308. 

  2309.         if (srcFormat == PIX_FMT_YUV422P)

  2310.         {

  2311.             if (dstFormat == PIX_FMT_YUYV422)

  2312.                 c->swScale= YUV422PToYuy2Wrapper;

  2313.             else if (dstFormat == PIX_FMT_UYVY422)

  2314.                 c->swScale= YUV422PToUyvyWrapper;

  2315.         }

  2316. 

  2317.         /* LQ converters if -sws 0 or -sws 4*/

  2318.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){

  2319.             /* yv12_to_yuy2 */

  2320.             if (srcFormat == PIX_FMT_YUV420P)

  2321.             {

  2322.                 if (dstFormat == PIX_FMT_YUYV422)

  2323.                     c->swScale= PlanarToYuy2Wrapper;

  2324.                 else if (dstFormat == PIX_FMT_UYVY422)

  2325.                     c->swScale= PlanarToUyvyWrapper;

  2326.             }

  2327.         }

  2328. 

  2329. #ifdef COMPILE_ALTIVEC

  2330.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2331.             srcFormat == PIX_FMT_YUV420P) {

  2332.           // unscaled YV12 -> packed YUV, we want speed

  2333.           if (dstFormat == PIX_FMT_YUYV422)

  2334.               c->swScale= yv12toyuy2_unscaled_altivec;

  2335.           else if (dstFormat == PIX_FMT_UYVY422)

  2336.               c->swScale= yv12touyvy_unscaled_altivec;

  2337.         }

  2338. #endif

  2339. 

  2340.         /* simple copy */

  2341.         if (  srcFormat == dstFormat

  2342.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2343.             || (isPlanarYUV(dstFormat) && isGray(srcFormat)))

  2344.         {

  2345.             if (isPacked(c->srcFormat))

  2346.                 c->swScale= packedCopy;

  2347.             else /* Planar YUV or gray */

  2348.                 c->swScale= planarCopy;

  2349.         }

  2350. 

  2351.         /* gray16{le,be} conversions */

  2352.         if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))

  2353.         {

  2354.             c->swScale= gray16togray;

  2355.         }

  2356.         if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))

  2357.         {

  2358.             c->swScale= graytogray16;

  2359.         }

  2360.         if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))

  2361.         {

  2362.             c->swScale= gray16swap;

  2363.         }

  2364. 

  2365. #ifdef ARCH_BFIN

  2366.         if (flags & SWS_CPU_CAPS_BFIN)

  2367.             ff_bfin_get_unscaled_swscale (c);

  2368. #endif

  2369. 

  2370.         if (c->swScale){

  2371.             if (flags&SWS_PRINT_INFO)

  2372.                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",

  2373.                                 sws_format_name(srcFormat), sws_format_name(dstFormat));

  2374.             return c;

  2375.         }

  2376.     }

  2377. 

  2378.     if (flags & SWS_CPU_CAPS_MMX2)

  2379.     {

  2380.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2381.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))

  2382.         {

  2383.             if (flags&SWS_PRINT_INFO)

  2384.                 av_log(c, AV_LOG_INFO, "output Width is not a multiple of 32 -> no MMX2 scaler\n");

  2385.         }

  2386.         if (usesHFilter) c->canMMX2BeUsed=0;

  2387.     }

  2388.     else

  2389.         c->canMMX2BeUsed=0;

  2390. 

  2391.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2392.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2393. 

  2394.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2395.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2396.     // n-2 is the last chrominance sample available

  2397.     // this is not perfect, but no one should notice the difference, the more correct variant

  2398.     // would be like the vertical one, but that would require some special code for the

  2399.     // first and last pixel

  2400.     if (flags&SWS_FAST_BILINEAR)

  2401.     {

  2402.         if (c->canMMX2BeUsed)

  2403.         {

  2404.             c->lumXInc+= 20;

  2405.             c->chrXInc+= 20;

  2406.         }

  2407.         //we don't use the x86asm scaler if mmx is available

  2408.         else if (flags & SWS_CPU_CAPS_MMX)

  2409.         {

  2410.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2411.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2412.         }

  2413.     }

  2414. 

  2415.     /* precalculate horizontal scaler filter coefficients */

  2416.     {

  2417.         const int filterAlign=

  2418.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2419.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2420.             1;

  2421. 

  2422.         initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2423.                    srcW      ,       dstW, filterAlign, 1<<14,

  2424.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2425.                    srcFilter->lumH, dstFilter->lumH, c->param);

  2426.         initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2427.                    c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2428.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2429.                    srcFilter->chrH, dstFilter->chrH, c->param);

  2430. 

  2431. #define MAX_FUNNY_CODE_SIZE 10000

  2432. #if defined(COMPILE_MMX2)

  2433. // can't downscale !!!

  2434.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))

  2435.         {

  2436. #ifdef MAP_ANONYMOUS

  2437.             c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2438.             c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2439. #else

  2440.             c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2441.             c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2442. #endif

  2443. 

  2444.             c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));

  2445.             c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));

  2446.             c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));

  2447.             c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));

  2448. 

  2449.             initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2450.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2451.         }

  2452. #endif /* defined(COMPILE_MMX2) */

  2453.     } // Init Horizontal stuff

  2454. 

  2455. 

  2456. 

  2457.     /* precalculate vertical scaler filter coefficients */

  2458.     {

  2459.         const int filterAlign=

  2460.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2461.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2462.             1;

  2463. 

  2464.         initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2465.                    srcH      ,        dstH, filterAlign, (1<<12),

  2466.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2467.                    srcFilter->lumV, dstFilter->lumV, c->param);

  2468.         initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2469.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12),

  2470.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2471.                    srcFilter->chrV, dstFilter->chrV, c->param);

  2472. 

  2473. #ifdef HAVE_ALTIVEC

  2474.         c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);

  2475.         c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);

  2476. 

  2477.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2478.             int j;

  2479.             short *p = (short *)&c->vYCoeffsBank[i];

  2480.             for (j=0;j<8;j++)

  2481.                 p[j] = c->vLumFilter[i];

  2482.         }

  2483. 

  2484.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2485.             int j;

  2486.             short *p = (short *)&c->vCCoeffsBank[i];

  2487.             for (j=0;j<8;j++)

  2488.                 p[j] = c->vChrFilter[i];

  2489.         }

  2490. #endif

  2491.     }

  2492. 

  2493.     // Calculate Buffer Sizes so that they won't run out while handling these damn slices

  2494.     c->vLumBufSize= c->vLumFilterSize;

  2495.     c->vChrBufSize= c->vChrFilterSize;

  2496.     for (i=0; i<dstH; i++)

  2497.     {

  2498.         int chrI= i*c->chrDstH / dstH;

  2499.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2500.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2501. 

  2502.         nextSlice>>= c->chrSrcVSubSample;

  2503.         nextSlice<<= c->chrSrcVSubSample;

  2504.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2505.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];

  2506.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2507.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2508.     }

  2509. 

  2510.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2511.     c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2512.     c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));

  2513.     //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)

  2514.     /* align at 16 bytes for AltiVec */

  2515.     for (i=0; i<c->vLumBufSize; i++)

  2516.         c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2517.     for (i=0; i<c->vChrBufSize; i++)

  2518.         c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);

  2519. 

  2520.     //try to avoid drawing green stuff between the right end and the stride end

  2521.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);

  2522. 

  2523.     assert(2*VOFW == VOF);

  2524. 

  2525.     assert(c->chrDstH <= dstH);

  2526. 

  2527.     if (flags&SWS_PRINT_INFO)

  2528.     {

  2529. #ifdef DITHER1XBPP

  2530.         const char *dither= " dithered";

  2531. #else

  2532.         const char *dither= "";

  2533. #endif

  2534.         if (flags&SWS_FAST_BILINEAR)

  2535.             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");

  2536.         else if (flags&SWS_BILINEAR)

  2537.             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");

  2538.         else if (flags&SWS_BICUBIC)

  2539.             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");

  2540.         else if (flags&SWS_X)

  2541.             av_log(c, AV_LOG_INFO, "Experimental scaler, ");

  2542.         else if (flags&SWS_POINT)

  2543.             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");

  2544.         else if (flags&SWS_AREA)

  2545.             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");

  2546.         else if (flags&SWS_BICUBLIN)

  2547.             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");

  2548.         else if (flags&SWS_GAUSS)

  2549.             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");

  2550.         else if (flags&SWS_SINC)

  2551.             av_log(c, AV_LOG_INFO, "Sinc scaler, ");

  2552.         else if (flags&SWS_LANCZOS)

  2553.             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");

  2554.         else if (flags&SWS_SPLINE)

  2555.             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");

  2556.         else

  2557.             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");

  2558. 

  2559.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2560.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  2561.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2562.         else

  2563.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  2564.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  2565. 

  2566.         if (flags & SWS_CPU_CAPS_MMX2)

  2567.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  2568.         else if (flags & SWS_CPU_CAPS_3DNOW)

  2569.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  2570.         else if (flags & SWS_CPU_CAPS_MMX)

  2571.             av_log(c, AV_LOG_INFO, "using MMX\n");

  2572.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  2573.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  2574.         else

  2575.             av_log(c, AV_LOG_INFO, "using C\n");

  2576.     }

  2577. 

  2578.     if (flags & SWS_PRINT_INFO)

  2579.     {

  2580.         if (flags & SWS_CPU_CAPS_MMX)

  2581.         {

  2582.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2583.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  2584.             else

  2585.             {

  2586.                 if (c->hLumFilterSize==4)

  2587.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");

  2588.                 else if (c->hLumFilterSize==8)

  2589.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");

  2590.                 else

  2591.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");

  2592. 

  2593.                 if (c->hChrFilterSize==4)

  2594.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");

  2595.                 else if (c->hChrFilterSize==8)

  2596.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");

  2597.                 else

  2598.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");

  2599.             }

  2600.         }

  2601.         else

  2602.         {

  2603. #if defined(ARCH_X86)

  2604.             av_log(c, AV_LOG_VERBOSE, "using X86-Asm scaler for horizontal scaling\n");

  2605. #else

  2606.             if (flags & SWS_FAST_BILINEAR)

  2607.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");

  2608.             else

  2609.                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");

  2610. #endif

  2611.         }

  2612.         if (isPlanarYUV(dstFormat))

  2613.         {

  2614.             if (c->vLumFilterSize==1)

  2615.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2616.             else

  2617.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2618.         }

  2619.         else

  2620.         {

  2621.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  2622.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  2623.                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2624.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  2625.                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2626.             else

  2627.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2628.         }

  2629. 

  2630.         if (dstFormat==PIX_FMT_BGR24)

  2631.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 Converter\n",

  2632.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  2633.         else if (dstFormat==PIX_FMT_RGB32)

  2634.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2635.         else if (dstFormat==PIX_FMT_BGR565)

  2636.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2637.         else if (dstFormat==PIX_FMT_BGR555)

  2638.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2639. 

  2640.         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  2641.     }

  2642.     if (flags & SWS_PRINT_INFO)

  2643.     {

  2644.         av_log(c, AV_LOG_DEBUG, "Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2645.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  2646.         av_log(c, AV_LOG_DEBUG, "Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2647.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  2648.     }

  2649. 

  2650.     c->swScale= getSwsFunc(flags);

  2651.     return c;

  2652. }

  2653. 

  2654. /**

  2655.  * swscale wrapper, so we don't need to export the SwsContext.

  2656.  * assumes planar YUV to be in YUV order instead of YVU

  2657.  */

  2658. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2659.               int srcSliceH, uint8_t* dst[], int dstStride[]){

  2660.     int i;

  2661.     uint8_t* src2[4]= {src[0], src[1], src[2]};

  2662.     uint32_t pal[256];

  2663.     int use_pal=   c->srcFormat == PIX_FMT_PAL8

  2664.                 || c->srcFormat == PIX_FMT_BGR4_BYTE

  2665.                 || c->srcFormat == PIX_FMT_RGB4_BYTE

  2666.                 || c->srcFormat == PIX_FMT_BGR8

  2667.                 || c->srcFormat == PIX_FMT_RGB8;

  2668. 

  2669.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  2670.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  2671.         return 0;

  2672.     }

  2673.     if (c->sliceDir == 0) {

  2674.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  2675.     }

  2676. 

  2677.     if (use_pal){

  2678.         for (i=0; i<256; i++){

  2679.             int p, r, g, b,y,u,v;

  2680.             if(c->srcFormat == PIX_FMT_PAL8){

  2681.                 p=((uint32_t*)(src[1]))[i];

  2682.                 r= (p>>16)&0xFF;

  2683.                 g= (p>> 8)&0xFF;

  2684.                 b=  p     &0xFF;

  2685.             }else if(c->srcFormat == PIX_FMT_RGB8){

  2686.                 r= (i>>5    )*36;

  2687.                 g= ((i>>2)&7)*36;

  2688.                 b= (i&3     )*85;

  2689.             }else if(c->srcFormat == PIX_FMT_BGR8){

  2690.                 b= (i>>6    )*85;

  2691.                 g= ((i>>3)&7)*36;

  2692.                 r= (i&7     )*36;

  2693.             }else if(c->srcFormat == PIX_FMT_RGB4_BYTE){

  2694.                 r= (i>>3    )*255;

  2695.                 g= ((i>>1)&3)*85;

  2696.                 b= (i&1     )*255;

  2697.             }else if(c->srcFormat == PIX_FMT_BGR4_BYTE){

  2698.                 b= (i>>3    )*255;

  2699.                 g= ((i>>1)&3)*85;

  2700.                 r= (i&1     )*255;

  2701.             }

  2702.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2703.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2704.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2705.             pal[i]= y + (u<<8) + (v<<16);

  2706.         }

  2707.         src2[1]= (uint8_t*)pal;

  2708.     }

  2709. 

  2710.     // copy strides, so they can safely be modified

  2711.     if (c->sliceDir == 1) {

  2712.         // slices go from top to bottom

  2713.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};

  2714.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};

  2715.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);

  2716.     } else {

  2717.         // slices go from bottom to top => we flip the image internally

  2718.         uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],

  2719.                            dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],

  2720.                            dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};

  2721.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};

  2722.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};

  2723. 

  2724.         src2[0] += (srcSliceH-1)*srcStride[0];

  2725.         if (!use_pal)

  2726.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  2727.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  2728. 

  2729.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  2730.     }

  2731. }

  2732. 

  2733. /**

  2734.  * swscale wrapper, so we don't need to export the SwsContext

  2735.  */

  2736. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2737.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  2738.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  2739. }

  2740. 

  2741. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  2742.                                 float lumaSharpen, float chromaSharpen,

  2743.                                 float chromaHShift, float chromaVShift,

  2744.                                 int verbose)

  2745. {

  2746.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  2747. 

  2748.     if (lumaGBlur!=0.0){

  2749.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  2750.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  2751.     }else{

  2752.         filter->lumH= sws_getIdentityVec();

  2753.         filter->lumV= sws_getIdentityVec();

  2754.     }

  2755. 

  2756.     if (chromaGBlur!=0.0){

  2757.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  2758.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  2759.     }else{

  2760.         filter->chrH= sws_getIdentityVec();

  2761.         filter->chrV= sws_getIdentityVec();

  2762.     }

  2763. 

  2764.     if (chromaSharpen!=0.0){

  2765.         SwsVector *id= sws_getIdentityVec();

  2766.         sws_scaleVec(filter->chrH, -chromaSharpen);

  2767.         sws_scaleVec(filter->chrV, -chromaSharpen);

  2768.         sws_addVec(filter->chrH, id);

  2769.         sws_addVec(filter->chrV, id);

  2770.         sws_freeVec(id);

  2771.     }

  2772. 

  2773.     if (lumaSharpen!=0.0){

  2774.         SwsVector *id= sws_getIdentityVec();

  2775.         sws_scaleVec(filter->lumH, -lumaSharpen);

  2776.         sws_scaleVec(filter->lumV, -lumaSharpen);

  2777.         sws_addVec(filter->lumH, id);

  2778.         sws_addVec(filter->lumV, id);

  2779.         sws_freeVec(id);

  2780.     }

  2781. 

  2782.     if (chromaHShift != 0.0)

  2783.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  2784. 

  2785.     if (chromaVShift != 0.0)

  2786.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  2787. 

  2788.     sws_normalizeVec(filter->chrH, 1.0);

  2789.     sws_normalizeVec(filter->chrV, 1.0);

  2790.     sws_normalizeVec(filter->lumH, 1.0);

  2791.     sws_normalizeVec(filter->lumV, 1.0);

  2792. 

  2793.     if (verbose) sws_printVec(filter->chrH);

  2794.     if (verbose) sws_printVec(filter->lumH);

  2795. 

  2796.     return filter;

  2797. }

  2798. 

  2799. /**

  2800.  * returns a normalized gaussian curve used to filter stuff

  2801.  * quality=3 is high quality, lowwer is lowwer quality

  2802.  */

  2803. SwsVector *sws_getGaussianVec(double variance, double quality){

  2804.     const int length= (int)(variance*quality + 0.5) | 1;

  2805.     int i;

  2806.     double *coeff= av_malloc(length*sizeof(double));

  2807.     double middle= (length-1)*0.5;

  2808.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2809. 

  2810.     vec->coeff= coeff;

  2811.     vec->length= length;

  2812. 

  2813.     for (i=0; i<length; i++)

  2814.     {

  2815.         double dist= i-middle;

  2816.         coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);

  2817.     }

  2818. 

  2819.     sws_normalizeVec(vec, 1.0);

  2820. 

  2821.     return vec;

  2822. }

  2823. 

  2824. SwsVector *sws_getConstVec(double c, int length){

  2825.     int i;

  2826.     double *coeff= av_malloc(length*sizeof(double));

  2827.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2828. 

  2829.     vec->coeff= coeff;

  2830.     vec->length= length;

  2831. 

  2832.     for (i=0; i<length; i++)

  2833.         coeff[i]= c;

  2834. 

  2835.     return vec;

  2836. }

  2837. 

  2838. 

  2839. SwsVector *sws_getIdentityVec(void){

  2840.     return sws_getConstVec(1.0, 1);

  2841. }

  2842. 

  2843. double sws_dcVec(SwsVector *a){

  2844.     int i;

  2845.     double sum=0;

  2846. 

  2847.     for (i=0; i<a->length; i++)

  2848.         sum+= a->coeff[i];

  2849. 

  2850.     return sum;

  2851. }

  2852. 

  2853. void sws_scaleVec(SwsVector *a, double scalar){

  2854.     int i;

  2855. 

  2856.     for (i=0; i<a->length; i++)

  2857.         a->coeff[i]*= scalar;

  2858. }

  2859. 

  2860. void sws_normalizeVec(SwsVector *a, double height){

  2861.     sws_scaleVec(a, height/sws_dcVec(a));

  2862. }

  2863. 

  2864. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){

  2865.     int length= a->length + b->length - 1;

  2866.     double *coeff= av_malloc(length*sizeof(double));

  2867.     int i, j;

  2868.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2869. 

  2870.     vec->coeff= coeff;

  2871.     vec->length= length;

  2872. 

  2873.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2874. 

  2875.     for (i=0; i<a->length; i++)

  2876.     {

  2877.         for (j=0; j<b->length; j++)

  2878.         {

  2879.             coeff[i+j]+= a->coeff[i]*b->coeff[j];

  2880.         }

  2881.     }

  2882. 

  2883.     return vec;

  2884. }

  2885. 

  2886. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){

  2887.     int length= FFMAX(a->length, b->length);

  2888.     double *coeff= av_malloc(length*sizeof(double));

  2889.     int i;

  2890.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2891. 

  2892.     vec->coeff= coeff;

  2893.     vec->length= length;

  2894. 

  2895.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2896. 

  2897.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2898.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  2899. 

  2900.     return vec;

  2901. }

  2902. 

  2903. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){

  2904.     int length= FFMAX(a->length, b->length);

  2905.     double *coeff= av_malloc(length*sizeof(double));

  2906.     int i;

  2907.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2908. 

  2909.     vec->coeff= coeff;

  2910.     vec->length= length;

  2911. 

  2912.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2913. 

  2914.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2915.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  2916. 

  2917.     return vec;

  2918. }

  2919. 

  2920. /* shift left / or right if "shift" is negative */

  2921. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){

  2922.     int length= a->length + FFABS(shift)*2;

  2923.     double *coeff= av_malloc(length*sizeof(double));

  2924.     int i;

  2925.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2926. 

  2927.     vec->coeff= coeff;

  2928.     vec->length= length;

  2929. 

  2930.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2931. 

  2932.     for (i=0; i<a->length; i++)

  2933.     {

  2934.         coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  2935.     }

  2936. 

  2937.     return vec;

  2938. }

  2939. 

  2940. void sws_shiftVec(SwsVector *a, int shift){

  2941.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  2942.     av_free(a->coeff);

  2943.     a->coeff= shifted->coeff;

  2944.     a->length= shifted->length;

  2945.     av_free(shifted);

  2946. }

  2947. 

  2948. void sws_addVec(SwsVector *a, SwsVector *b){

  2949.     SwsVector *sum= sws_sumVec(a, b);

  2950.     av_free(a->coeff);

  2951.     a->coeff= sum->coeff;

  2952.     a->length= sum->length;

  2953.     av_free(sum);

  2954. }

  2955. 

  2956. void sws_subVec(SwsVector *a, SwsVector *b){

  2957.     SwsVector *diff= sws_diffVec(a, b);

  2958.     av_free(a->coeff);

  2959.     a->coeff= diff->coeff;

  2960.     a->length= diff->length;

  2961.     av_free(diff);

  2962. }

  2963. 

  2964. void sws_convVec(SwsVector *a, SwsVector *b){

  2965.     SwsVector *conv= sws_getConvVec(a, b);

  2966.     av_free(a->coeff);

  2967.     a->coeff= conv->coeff;

  2968.     a->length= conv->length;

  2969.     av_free(conv);

  2970. }

  2971. 

  2972. SwsVector *sws_cloneVec(SwsVector *a){

  2973.     double *coeff= av_malloc(a->length*sizeof(double));

  2974.     int i;

  2975.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2976. 

  2977.     vec->coeff= coeff;

  2978.     vec->length= a->length;

  2979. 

  2980.     for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];

  2981. 

  2982.     return vec;

  2983. }

  2984. 

  2985. void sws_printVec(SwsVector *a){

  2986.     int i;

  2987.     double max=0;

  2988.     double min=0;

  2989.     double range;

  2990. 

  2991.     for (i=0; i<a->length; i++)

  2992.         if (a->coeff[i]>max) max= a->coeff[i];

  2993. 

  2994.     for (i=0; i<a->length; i++)

  2995.         if (a->coeff[i]<min) min= a->coeff[i];

  2996. 

  2997.     range= max - min;

  2998. 

  2999.     for (i=0; i<a->length; i++)

  3000.     {

  3001.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  3002.         av_log(NULL, AV_LOG_DEBUG, "%1.3f ", a->coeff[i]);

  3003.         for (;x>0; x--) av_log(NULL, AV_LOG_DEBUG, " ");

  3004.         av_log(NULL, AV_LOG_DEBUG, "|\n");

  3005.     }

  3006. }

  3007. 

  3008. void sws_freeVec(SwsVector *a){

  3009.     if (!a) return;

  3010.     av_freep(&a->coeff);

  3011.     a->length=0;

  3012.     av_free(a);

  3013. }

  3014. 

  3015. void sws_freeFilter(SwsFilter *filter){

  3016.     if (!filter) return;

  3017. 

  3018.     if (filter->lumH) sws_freeVec(filter->lumH);

  3019.     if (filter->lumV) sws_freeVec(filter->lumV);

  3020.     if (filter->chrH) sws_freeVec(filter->chrH);

  3021.     if (filter->chrV) sws_freeVec(filter->chrV);

  3022.     av_free(filter);

  3023. }

  3024. 

  3025. 

  3026. void sws_freeContext(SwsContext *c){

  3027.     int i;

  3028.     if (!c) return;

  3029. 

  3030.     if (c->lumPixBuf)

  3031.     {

  3032.         for (i=0; i<c->vLumBufSize; i++)

  3033.             av_freep(&c->lumPixBuf[i]);

  3034.         av_freep(&c->lumPixBuf);

  3035.     }

  3036. 

  3037.     if (c->chrPixBuf)

  3038.     {

  3039.         for (i=0; i<c->vChrBufSize; i++)

  3040.             av_freep(&c->chrPixBuf[i]);

  3041.         av_freep(&c->chrPixBuf);

  3042.     }

  3043. 

  3044.     av_freep(&c->vLumFilter);

  3045.     av_freep(&c->vChrFilter);

  3046.     av_freep(&c->hLumFilter);

  3047.     av_freep(&c->hChrFilter);

  3048. #ifdef HAVE_ALTIVEC

  3049.     av_freep(&c->vYCoeffsBank);

  3050.     av_freep(&c->vCCoeffsBank);

  3051. #endif

  3052. 

  3053.     av_freep(&c->vLumFilterPos);

  3054.     av_freep(&c->vChrFilterPos);

  3055.     av_freep(&c->hLumFilterPos);

  3056.     av_freep(&c->hChrFilterPos);

  3057. 

  3058. #if defined(ARCH_X86) && defined(CONFIG_GPL)

  3059. #ifdef MAP_ANONYMOUS

  3060.     if (c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);

  3061.     if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);

  3062. #else

  3063.     av_free(c->funnyYCode);

  3064.     av_free(c->funnyUVCode);

  3065. #endif

  3066.     c->funnyYCode=NULL;

  3067.     c->funnyUVCode=NULL;

  3068. #endif /* defined(ARCH_X86) */

  3069. 

  3070.     av_freep(&c->lumMmx2Filter);

  3071.     av_freep(&c->chrMmx2Filter);

  3072.     av_freep(&c->lumMmx2FilterPos);

  3073.     av_freep(&c->chrMmx2FilterPos);

  3074.     av_freep(&c->yuvTable);

  3075. 

  3076.     av_free(c);

  3077. }

  3078. 

  3079. /**

  3080.  * Checks if context is valid or reallocs a new one instead.

  3081.  * If context is NULL, just calls sws_getContext() to get a new one.

  3082.  * Otherwise, checks if the parameters are the same already saved in context.

  3083.  * If that is the case, returns the current context.

  3084.  * Otherwise, frees context and gets a new one.

  3085.  *

  3086.  * Be warned that srcFilter, dstFilter are not checked, they are

  3087.  * asumed to remain valid.

  3088.  */

  3089. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  3090.                                         int srcW, int srcH, int srcFormat,

  3091.                                         int dstW, int dstH, int dstFormat, int flags,

  3092.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)

  3093. {

  3094.     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};

  3095. 

  3096.     if (!param)

  3097.         param = default_param;

  3098. 

  3099.     if (context) {

  3100.         if (context->srcW != srcW || context->srcH != srcH ||

  3101.             context->srcFormat != srcFormat ||

  3102.             context->dstW != dstW || context->dstH != dstH ||

  3103.             context->dstFormat != dstFormat || context->flags != flags ||

  3104.             context->param[0] != param[0] || context->param[1] != param[1])

  3105.         {

  3106.             sws_freeContext(context);

  3107.             context = NULL;

  3108.         }

  3109.     }

  3110.     if (!context) {

  3111.         return sws_getContext(srcW, srcH, srcFormat,

  3112.                               dstW, dstH, dstFormat, flags,

  3113.                               srcFilter, dstFilter, param);

  3114.     }

  3115.     return context;

  3116. }