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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. #if 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. #if HAVE_VIRTUALALLOC

  72. #define WIN32_LEAN_AND_MEAN

  73. #include <windows.h>

  74. #endif

  75. #include "swscale.h"

  76. #include "swscale_internal.h"

  77. #include "rgb2rgb.h"

  78. #include "libavutil/x86_cpu.h"

  79. #include "libavutil/bswap.h"

  80. 

  81. unsigned swscale_version(void)

  82. {

  83.     return LIBSWSCALE_VERSION_INT;

  84. }

  85. 

  86. #undef MOVNTQ

  87. #undef PAVGB

  88. 

  89. //#undef HAVE_MMX2

  90. //#define HAVE_AMD3DNOW

  91. //#undef HAVE_MMX

  92. //#undef ARCH_X86

  93. //#define WORDS_BIGENDIAN

  94. #define DITHER1XBPP

  95. 

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

  97. 

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

  99. 

  100. #ifdef M_PI

  101. #define PI M_PI

  102. #else

  103. #define PI 3.14159265358979323846

  104. #endif

  105. 

  106. #define isSupportedIn(x)    (       \

  107.            (x)==PIX_FMT_YUV420P     \

  108.         || (x)==PIX_FMT_YUVA420P    \

  109.         || (x)==PIX_FMT_YUYV422     \

  110.         || (x)==PIX_FMT_UYVY422     \

  111.         || (x)==PIX_FMT_RGB32       \

  112.         || (x)==PIX_FMT_RGB32_1     \

  113.         || (x)==PIX_FMT_BGR24       \

  114.         || (x)==PIX_FMT_BGR565      \

  115.         || (x)==PIX_FMT_BGR555      \

  116.         || (x)==PIX_FMT_BGR32       \

  117.         || (x)==PIX_FMT_BGR32_1     \

  118.         || (x)==PIX_FMT_RGB24       \

  119.         || (x)==PIX_FMT_RGB565      \

  120.         || (x)==PIX_FMT_RGB555      \

  121.         || (x)==PIX_FMT_GRAY8       \

  122.         || (x)==PIX_FMT_YUV410P     \

  123.         || (x)==PIX_FMT_YUV440P     \

  124.         || (x)==PIX_FMT_GRAY16BE    \

  125.         || (x)==PIX_FMT_GRAY16LE    \

  126.         || (x)==PIX_FMT_YUV444P     \

  127.         || (x)==PIX_FMT_YUV422P     \

  128.         || (x)==PIX_FMT_YUV411P     \

  129.         || (x)==PIX_FMT_PAL8        \

  130.         || (x)==PIX_FMT_BGR8        \

  131.         || (x)==PIX_FMT_RGB8        \

  132.         || (x)==PIX_FMT_BGR4_BYTE   \

  133.         || (x)==PIX_FMT_RGB4_BYTE   \

  134.         || (x)==PIX_FMT_YUV440P     \

  135.         || (x)==PIX_FMT_MONOWHITE   \

  136.         || (x)==PIX_FMT_MONOBLACK   \

  137.         || (x)==PIX_FMT_YUV420PLE   \

  138.         || (x)==PIX_FMT_YUV422PLE   \

  139.         || (x)==PIX_FMT_YUV444PLE   \

  140.         || (x)==PIX_FMT_YUV420PBE   \

  141.         || (x)==PIX_FMT_YUV422PBE   \

  142.         || (x)==PIX_FMT_YUV444PBE   \

  143.     )

  144. #define isSupportedOut(x)   (       \

  145.            (x)==PIX_FMT_YUV420P     \

  146.         || (x)==PIX_FMT_YUVA420P    \

  147.         || (x)==PIX_FMT_YUYV422     \

  148.         || (x)==PIX_FMT_UYVY422     \

  149.         || (x)==PIX_FMT_YUV444P     \

  150.         || (x)==PIX_FMT_YUV422P     \

  151.         || (x)==PIX_FMT_YUV411P     \

  152.         || isRGB(x)                 \

  153.         || isBGR(x)                 \

  154.         || (x)==PIX_FMT_NV12        \

  155.         || (x)==PIX_FMT_NV21        \

  156.         || (x)==PIX_FMT_GRAY16BE    \

  157.         || (x)==PIX_FMT_GRAY16LE    \

  158.         || (x)==PIX_FMT_GRAY8       \

  159.         || (x)==PIX_FMT_YUV410P     \

  160.         || (x)==PIX_FMT_YUV440P     \

  161.         || (x)==PIX_FMT_YUV420PLE   \

  162.         || (x)==PIX_FMT_YUV422PLE   \

  163.         || (x)==PIX_FMT_YUV444PLE   \

  164.         || (x)==PIX_FMT_YUV420PBE   \

  165.         || (x)==PIX_FMT_YUV422PBE   \

  166.         || (x)==PIX_FMT_YUV444PBE   \

  167.     )

  168. #define isPacked(x)         (       \

  169.            (x)==PIX_FMT_PAL8        \

  170.         || (x)==PIX_FMT_YUYV422     \

  171.         || (x)==PIX_FMT_UYVY422     \

  172.         || isRGB(x)                 \

  173.         || isBGR(x)                 \

  174.     )

  175. #define usePal(x)           (       \

  176.            (x)==PIX_FMT_PAL8        \

  177.         || (x)==PIX_FMT_BGR4_BYTE   \

  178.         || (x)==PIX_FMT_RGB4_BYTE   \

  179.         || (x)==PIX_FMT_BGR8        \

  180.         || (x)==PIX_FMT_RGB8        \

  181.     )

  182. 

  183. #define RGB2YUV_SHIFT 15

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

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

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

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

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

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

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

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

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

  193. 

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

  195. 

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

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

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

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

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

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

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

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

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

  205. };

  206. 

  207. /*

  208. NOTES

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

  210. 

  211. TODO

  212. more intelligent misalignment avoidance for the horizontal scaler

  213. write special vertical cubic upscale version

  214. optimize C code (YV12 / minmax)

  215. add support for packed pixel YUV input & output

  216. add support for Y8 output

  217. optimize BGR24 & BGR32

  218. add BGR4 output support

  219. write special BGR->BGR scaler

  220. */

  221. 

  222. #if ARCH_X86 && CONFIG_GPL

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

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

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

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

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

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

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

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

  231. 

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

  233.         0x0103010301030103LL,

  234.         0x0200020002000200LL,};

  235. 

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

  237.         0x0602060206020602LL,

  238.         0x0004000400040004LL,};

  239. 

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

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

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

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

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

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

  246. 

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

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

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

  250. 

  251. #ifdef FAST_BGR2YV12

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

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

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

  255. #else

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

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

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

  259. #endif /* FAST_BGR2YV12 */

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

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

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

  263. 

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

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

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

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

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

  269. 

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

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

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

  273. };

  274. 

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

  276. 

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

  278. 

  279. // clipping helper table for C implementations:

  280. static unsigned char clip_table[768];

  281. 

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

  283. 

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

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

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

  287. };

  288. 

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

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

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

  292. };

  293. 

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

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

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

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

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

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

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

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

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

  303. };

  304. 

  305. #if 0

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

  307. {  0,  48,  12,  60,   3,  51,  15,  63, },

  308. { 32,  16,  44,  28,  35,  19,  47,  31, },

  309. {  8,  56,   4,  52,  11,  59,   7,  55, },

  310. { 40,  24,  36,  20,  43,  27,  39,  23, },

  311. {  2,  50,  14,  62,   1,  49,  13,  61, },

  312. { 34,  18,  46,  30,  33,  17,  45,  29, },

  313. { 10,  58,   6,  54,   9,  57,   5,  53, },

  314. { 42,  26,  38,  22,  41,  25,  37,  21, },

  315. };

  316. #endif

  317. 

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

  319. {  0,  55,  14,  68,   3,  58,  17,  72, },

  320. { 37,  18,  50,  32,  40,  22,  54,  35, },

  321. {  9,  64,   5,  59,  13,  67,   8,  63, },

  322. { 46,  27,  41,  23,  49,  31,  44,  26, },

  323. {  2,  57,  16,  71,   1,  56,  15,  70, },

  324. { 39,  21,  52,  34,  38,  19,  51,  33, },

  325. { 11,  66,   7,  62,  10,  65,   6,  60, },

  326. { 48,  30,  43,  25,  47,  29,  42,  24, },

  327. };

  328. 

  329. #if 0

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

  331. { 68,  36,  92,  60,  66,  34,  90,  58, },

  332. { 20, 116,  12, 108,  18, 114,  10, 106, },

  333. { 84,  52,  76,  44,  82,  50,  74,  42, },

  334. {  0,  96,  24, 120,   6, 102,  30, 126, },

  335. { 64,  32,  88,  56,  70,  38,  94,  62, },

  336. { 16, 112,   8, 104,  22, 118,  14, 110, },

  337. { 80,  48,  72,  40,  86,  54,  78,  46, },

  338. {  4, 100,  28, 124,   2,  98,  26, 122, },

  339. };

  340. #endif

  341. 

  342. #if 1

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

  344. {117,  62, 158, 103, 113,  58, 155, 100, },

  345. { 34, 199,  21, 186,  31, 196,  17, 182, },

  346. {144,  89, 131,  76, 141,  86, 127,  72, },

  347. {  0, 165,  41, 206,  10, 175,  52, 217, },

  348. {110,  55, 151,  96, 120,  65, 162, 107, },

  349. { 28, 193,  14, 179,  38, 203,  24, 189, },

  350. {138,  83, 124,  69, 148,  93, 134,  79, },

  351. {  7, 172,  48, 213,   3, 168,  45, 210, },

  352. };

  353. #elif 1

  354. // tries to correct a gamma of 1.5

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

  356. {  0, 143,  18, 200,   2, 156,  25, 215, },

  357. { 78,  28, 125,  64,  89,  36, 138,  74, },

  358. { 10, 180,   3, 161,  16, 195,   8, 175, },

  359. {109,  51,  93,  38, 121,  60, 105,  47, },

  360. {  1, 152,  23, 210,   0, 147,  20, 205, },

  361. { 85,  33, 134,  71,  81,  30, 130,  67, },

  362. { 14, 190,   6, 171,  12, 185,   5, 166, },

  363. {117,  57, 101,  44, 113,  54,  97,  41, },

  364. };

  365. #elif 1

  366. // tries to correct a gamma of 2.0

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

  368. {  0, 124,   8, 193,   0, 140,  12, 213, },

  369. { 55,  14, 104,  42,  66,  19, 119,  52, },

  370. {  3, 168,   1, 145,   6, 187,   3, 162, },

  371. { 86,  31,  70,  21,  99,  39,  82,  28, },

  372. {  0, 134,  11, 206,   0, 129,   9, 200, },

  373. { 62,  17, 114,  48,  58,  16, 109,  45, },

  374. {  5, 181,   2, 157,   4, 175,   1, 151, },

  375. { 95,  36,  78,  26,  90,  34,  74,  24, },

  376. };

  377. #else

  378. // tries to correct a gamma of 2.5

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

  380. {  0, 107,   3, 187,   0, 125,   6, 212, },

  381. { 39,   7,  86,  28,  49,  11, 102,  36, },

  382. {  1, 158,   0, 131,   3, 180,   1, 151, },

  383. { 68,  19,  52,  12,  81,  25,  64,  17, },

  384. {  0, 119,   5, 203,   0, 113,   4, 195, },

  385. { 45,   9,  96,  33,  42,   8,  91,  30, },

  386. {  2, 172,   1, 144,   2, 165,   0, 137, },

  387. { 77,  23,  60,  15,  72,  21,  56,  14, },

  388. };

  389. #endif

  390. 

  391. const char *sws_format_name(enum PixelFormat format)

  392. {

  393.     switch (format) {

  394.         case PIX_FMT_YUV420P:

  395.             return "yuv420p";

  396.         case PIX_FMT_YUVA420P:

  397.             return "yuva420p";

  398.         case PIX_FMT_YUYV422:

  399.             return "yuyv422";

  400.         case PIX_FMT_RGB24:

  401.             return "rgb24";

  402.         case PIX_FMT_BGR24:

  403.             return "bgr24";

  404.         case PIX_FMT_YUV422P:

  405.             return "yuv422p";

  406.         case PIX_FMT_YUV444P:

  407.             return "yuv444p";

  408.         case PIX_FMT_RGB32:

  409.             return "rgb32";

  410.         case PIX_FMT_YUV410P:

  411.             return "yuv410p";

  412.         case PIX_FMT_YUV411P:

  413.             return "yuv411p";

  414.         case PIX_FMT_RGB565:

  415.             return "rgb565";

  416.         case PIX_FMT_RGB555:

  417.             return "rgb555";

  418.         case PIX_FMT_GRAY16BE:

  419.             return "gray16be";

  420.         case PIX_FMT_GRAY16LE:

  421.             return "gray16le";

  422.         case PIX_FMT_GRAY8:

  423.             return "gray8";

  424.         case PIX_FMT_MONOWHITE:

  425.             return "mono white";

  426.         case PIX_FMT_MONOBLACK:

  427.             return "mono black";

  428.         case PIX_FMT_PAL8:

  429.             return "Palette";

  430.         case PIX_FMT_YUVJ420P:

  431.             return "yuvj420p";

  432.         case PIX_FMT_YUVJ422P:

  433.             return "yuvj422p";

  434.         case PIX_FMT_YUVJ444P:

  435.             return "yuvj444p";

  436.         case PIX_FMT_XVMC_MPEG2_MC:

  437.             return "xvmc_mpeg2_mc";

  438.         case PIX_FMT_XVMC_MPEG2_IDCT:

  439.             return "xvmc_mpeg2_idct";

  440.         case PIX_FMT_UYVY422:

  441.             return "uyvy422";

  442.         case PIX_FMT_UYYVYY411:

  443.             return "uyyvyy411";

  444.         case PIX_FMT_RGB32_1:

  445.             return "rgb32x";

  446.         case PIX_FMT_BGR32_1:

  447.             return "bgr32x";

  448.         case PIX_FMT_BGR32:

  449.             return "bgr32";

  450.         case PIX_FMT_BGR565:

  451.             return "bgr565";

  452.         case PIX_FMT_BGR555:

  453.             return "bgr555";

  454.         case PIX_FMT_BGR8:

  455.             return "bgr8";

  456.         case PIX_FMT_BGR4:

  457.             return "bgr4";

  458.         case PIX_FMT_BGR4_BYTE:

  459.             return "bgr4 byte";

  460.         case PIX_FMT_RGB8:

  461.             return "rgb8";

  462.         case PIX_FMT_RGB4:

  463.             return "rgb4";

  464.         case PIX_FMT_RGB4_BYTE:

  465.             return "rgb4 byte";

  466.         case PIX_FMT_RGB48BE:

  467.             return "rgb48be";

  468.         case PIX_FMT_RGB48LE:

  469.             return "rgb48le";

  470.         case PIX_FMT_NV12:

  471.             return "nv12";

  472.         case PIX_FMT_NV21:

  473.             return "nv21";

  474.         case PIX_FMT_YUV440P:

  475.             return "yuv440p";

  476.         case PIX_FMT_VDPAU_H264:

  477.             return "vdpau_h264";

  478.         case PIX_FMT_VDPAU_MPEG1:

  479.             return "vdpau_mpeg1";

  480.         case PIX_FMT_VDPAU_MPEG2:

  481.             return "vdpau_mpeg2";

  482.         case PIX_FMT_VDPAU_WMV3:

  483.             return "vdpau_wmv3";

  484.         case PIX_FMT_VDPAU_VC1:

  485.             return "vdpau_vc1";

  486.         case PIX_FMT_YUV420PLE:

  487.             return "yuv420ple";

  488.         case PIX_FMT_YUV422PLE:

  489.             return "yuv422ple";

  490.         case PIX_FMT_YUV444PLE:

  491.             return "yuv444ple";

  492.         case PIX_FMT_YUV420PBE:

  493.             return "yuv420pbe";

  494.         case PIX_FMT_YUV422PBE:

  495.             return "yuv422pbe";

  496.         case PIX_FMT_YUV444PBE:

  497.             return "yuv444pbe";

  498.         default:

  499.             return "Unknown format";

  500.     }

  501. }

  502. 

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

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

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

  506. {

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

  508.     int i;

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

  510.     {

  511.         int val=1<<18;

  512.         int j;

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

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

  515. 

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

  517.     }

  518. 

  519.     if (uDest)

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

  521.         {

  522.             int u=1<<18;

  523.             int v=1<<18;

  524.             int j;

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

  526.             {

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

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

  529.             }

  530. 

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

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

  533.         }

  534. 

  535.     if (CONFIG_SWSCALE_ALPHA && aDest)

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

  537.             int val=1<<18;

  538.             int j;

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

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

  541. 

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

  543.         }

  544. 

  545. }

  546. 

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

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

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

  550. {

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

  552.     int i;

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

  554.     {

  555.         int val=1<<18;

  556.         int j;

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

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

  559. 

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

  561.     }

  562. 

  563.     if (!uDest)

  564.         return;

  565. 

  566.     if (dstFormat == PIX_FMT_NV12)

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

  568.         {

  569.             int u=1<<18;

  570.             int v=1<<18;

  571.             int j;

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

  573.             {

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

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

  576.             }

  577. 

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

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

  580.         }

  581.     else

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

  583.         {

  584.             int u=1<<18;

  585.             int v=1<<18;

  586.             int j;

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

  588.             {

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

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

  591.             }

  592. 

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

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

  595.         }

  596. }

  597. 

  598. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \

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

  600.         int j;\

  601.         int Y1 = 1<<18;\

  602.         int Y2 = 1<<18;\

  603.         int U  = 1<<18;\

  604.         int V  = 1<<18;\

  605.         int av_unused A1, A2;\

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

  607.         const int i2= 2*i;\

  608.         \

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

  610.         {\

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

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

  613.         }\

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

  615.         {\

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

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

  618.         }\

  619.         Y1>>=19;\

  620.         Y2>>=19;\

  621.         U >>=19;\

  622.         V >>=19;\

  623.         if (alpha){\

  624.             A1 = 1<<18;\

  625.             A2 = 1<<18;\

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

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

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

  629.             }\

  630.             A1>>=19;\

  631.             A2>>=19;\

  632.         }\

  633. 

  634. #define YSCALE_YUV_2_PACKEDX_C(type,alpha) \

  635.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\

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

  637.         {\

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

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

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

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

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

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

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

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

  646.         }\

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

  648.             A1=av_clip_uint8(A1);\

  649.             A2=av_clip_uint8(A2);\

  650.         }

  651. 

  652. #define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \

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

  654.         int j;\

  655.         int Y = 0;\

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

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

  658.         int av_unused A;\

  659.         int R,G,B;\

  660.         \

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

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

  663.         }\

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

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

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

  667.         }\

  668.         Y >>=10;\

  669.         U >>=10;\

  670.         V >>=10;\

  671.         if (alpha){\

  672.             A = rnd;\

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

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

  675.             A >>=19;\

  676.             if (A&256)\

  677.                 A = av_clip_uint8(A);\

  678.         }\

  679. 

  680. #define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \

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

  682.         Y-= c->yuv2rgb_y_offset;\

  683.         Y*= c->yuv2rgb_y_coeff;\

  684.         Y+= rnd;\

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

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

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

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

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

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

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

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

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

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

  695.         }\

  696. 

  697. 

  698. #define YSCALE_YUV_2_GRAY16_C \

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

  700.         int j;\

  701.         int Y1 = 1<<18;\

  702.         int Y2 = 1<<18;\

  703.         int U  = 1<<18;\

  704.         int V  = 1<<18;\

  705.         \

  706.         const int i2= 2*i;\

  707.         \

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

  709.         {\

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

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

  712.         }\

  713.         Y1>>=11;\

  714.         Y2>>=11;\

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

  716.         {\

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

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

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

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

  721.         }

  722. 

  723. #define YSCALE_YUV_2_RGBX_C(type,alpha) \

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

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

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

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

  728. 

  729. #define YSCALE_YUV_2_PACKED2_C(type,alpha)   \

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

  731.         const int i2= 2*i;       \

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

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

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

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

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

  737.         int av_unused A1, A2;                                         \

  738.         if (alpha){\

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

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

  741.         }\

  742. 

  743. #define YSCALE_YUV_2_GRAY16_2_C   \

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

  745.         const int i2= 2*i;       \

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

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

  748. 

  749. #define YSCALE_YUV_2_RGB2_C(type,alpha) \

  750.     YSCALE_YUV_2_PACKED2_C(type,alpha)\

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

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

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

  754. 

  755. #define YSCALE_YUV_2_PACKED1_C(type,alpha) \

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

  757.         const int i2= 2*i;\

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

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

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

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

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

  763.         int av_unused A1, A2;\

  764.         if (alpha){\

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

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

  767.         }\

  768. 

  769. #define YSCALE_YUV_2_GRAY16_1_C \

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

  771.         const int i2= 2*i;\

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

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

  774. 

  775. #define YSCALE_YUV_2_RGB1_C(type,alpha) \

  776.     YSCALE_YUV_2_PACKED1_C(type,alpha)\

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

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

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

  780. 

  781. #define YSCALE_YUV_2_PACKED1B_C(type,alpha) \

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

  783.         const int i2= 2*i;\

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

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

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

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

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

  789.         int av_unused A1, A2;\

  790.         if (alpha){\

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

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

  793.         }\

  794. 

  795. #define YSCALE_YUV_2_RGB1B_C(type,alpha) \

  796.     YSCALE_YUV_2_PACKED1B_C(type,alpha)\

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

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

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

  800. 

  801. #define YSCALE_YUV_2_MONO2_C \

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

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

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

  805.         int acc;\

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

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

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

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

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

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

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

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

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

  815.         dest++;\

  816.     }\

  817. 

  818. 

  819. #define YSCALE_YUV_2_MONOX_C \

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

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

  822.     int acc=0;\

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

  824.         int j;\

  825.         int Y1=1<<18;\

  826.         int Y2=1<<18;\

  827. \

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

  829.         {\

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

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

  832.         }\

  833.         Y1>>=19;\

  834.         Y2>>=19;\

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

  836.         {\

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

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

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

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

  841.         }\

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

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

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

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

  846.             dest++;\

  847.         }\

  848.     }

  849. 

  850. 

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

  852.     switch(c->dstFormat)\

  853.     {\

  854.     case PIX_FMT_RGBA:\

  855.     case PIX_FMT_BGRA:\

  856.         if (CONFIG_SMALL){\

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

  858.             func(uint32_t,needAlpha)\

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

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

  861.             }\

  862.         }else{\

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

  864.                 func(uint32_t,1)\

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

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

  867.                 }\

  868.             }else{\

  869.                 func(uint32_t,0)\

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

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

  872.                 }\

  873.             }\

  874.         }\

  875.         break;\

  876.     case PIX_FMT_ARGB:\

  877.     case PIX_FMT_ABGR:\

  878.         if (CONFIG_SMALL){\

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

  880.             func(uint32_t,needAlpha)\

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

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

  883.             }\

  884.         }else{\

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

  886.                 func(uint32_t,1)\

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

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

  889.                 }\

  890.             }else{\

  891.                 func(uint32_t,0)\

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

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

  894.                 }\

  895.             }\

  896.         }                \

  897.         break;\

  898.     case PIX_FMT_RGB24:\

  899.         func(uint8_t,0)\

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

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

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

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

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

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

  906.             dest+=6;\

  907.         }\

  908.         break;\

  909.     case PIX_FMT_BGR24:\

  910.         func(uint8_t,0)\

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

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

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

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

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

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

  917.             dest+=6;\

  918.         }\

  919.         break;\

  920.     case PIX_FMT_RGB565:\

  921.     case PIX_FMT_BGR565:\

  922.         {\

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

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

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

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

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

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

  929.             func(uint16_t,0)\

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

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

  932.             }\

  933.         }\

  934.         break;\

  935.     case PIX_FMT_RGB555:\

  936.     case PIX_FMT_BGR555:\

  937.         {\

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

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

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

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

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

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

  944.             func(uint16_t,0)\

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

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

  947.             }\

  948.         }\

  949.         break;\

  950.     case PIX_FMT_RGB8:\

  951.     case PIX_FMT_BGR8:\

  952.         {\

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

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

  955.             func(uint8_t,0)\

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

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

  958.             }\

  959.         }\

  960.         break;\

  961.     case PIX_FMT_RGB4:\

  962.     case PIX_FMT_BGR4:\

  963.         {\

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

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

  966.             func(uint8_t,0)\

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

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

  969.             }\

  970.         }\

  971.         break;\

  972.     case PIX_FMT_RGB4_BYTE:\

  973.     case PIX_FMT_BGR4_BYTE:\

  974.         {\

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

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

  977.             func(uint8_t,0)\

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

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

  980.             }\

  981.         }\

  982.         break;\

  983.     case PIX_FMT_MONOBLACK:\

  984.     case PIX_FMT_MONOWHITE:\

  985.         {\

  986.             func_monoblack\

  987.         }\

  988.         break;\

  989.     case PIX_FMT_YUYV422:\

  990.         func2\

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

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

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

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

  995.         }                \

  996.         break;\

  997.     case PIX_FMT_UYVY422:\

  998.         func2\

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

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

  1001.             ((uint8_t*)dest)[2*i2+2]= V;\

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

  1003.         }                \

  1004.         break;\

  1005.     case PIX_FMT_GRAY16BE:\

  1006.         func_g16\

  1007.             ((uint8_t*)dest)[2*i2+0]= Y1>>8;\

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

  1009.             ((uint8_t*)dest)[2*i2+2]= Y2>>8;\

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

  1011.         }                \

  1012.         break;\

  1013.     case PIX_FMT_GRAY16LE:\

  1014.         func_g16\

  1015.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  1016.             ((uint8_t*)dest)[2*i2+1]= Y1>>8;\

  1017.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  1018.             ((uint8_t*)dest)[2*i2+3]= Y2>>8;\

  1019.         }                \

  1020.         break;\

  1021.     }\

  1022. 

  1023. 

  1024. static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

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

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

  1027. {

  1028.     int i;

  1029.     YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void,0), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)

  1030. }

  1031. 

  1032. static inline void yuv2rgbXinC_full(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  1033.                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  1034.                                     const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  1035. {

  1036.     int i;

  1037.     int step= fmt_depth(c->dstFormat)/8;

  1038.     int aidx= 3;

  1039. 

  1040.     switch(c->dstFormat){

  1041.     case PIX_FMT_ARGB:

  1042.         dest++;

  1043.         aidx= 0;

  1044.     case PIX_FMT_RGB24:

  1045.         aidx--;

  1046.     case PIX_FMT_RGBA:

  1047.         if (CONFIG_SMALL){

  1048.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1049.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1050.                 dest[aidx]= needAlpha ? A : 255;

  1051.                 dest[0]= R>>22;

  1052.                 dest[1]= G>>22;

  1053.                 dest[2]= B>>22;

  1054.                 dest+= step;

  1055.             }

  1056.         }else{

  1057.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf){

  1058.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1059.                     dest[aidx]= A;

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

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

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

  1063.                     dest+= step;

  1064.                 }

  1065.             }else{

  1066.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1067.                     dest[aidx]= 255;

  1068.                     dest[0]= R>>22;

  1069.                     dest[1]= G>>22;

  1070.                     dest[2]= B>>22;

  1071.                     dest+= step;

  1072.                 }

  1073.             }

  1074.         }

  1075.         break;

  1076.     case PIX_FMT_ABGR:

  1077.         dest++;

  1078.         aidx= 0;

  1079.     case PIX_FMT_BGR24:

  1080.         aidx--;

  1081.     case PIX_FMT_BGRA:

  1082.         if (CONFIG_SMALL){

  1083.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1084.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1085.                 dest[aidx]= needAlpha ? A : 255;

  1086.                 dest[0]= B>>22;

  1087.                 dest[1]= G>>22;

  1088.                 dest[2]= R>>22;

  1089.                 dest+= step;

  1090.             }

  1091.         }else{

  1092.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf){

  1093.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1094.                     dest[aidx]= A;

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

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

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

  1098.                     dest+= step;

  1099.                 }

  1100.             }else{

  1101.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1102.                     dest[aidx]= 255;

  1103.                     dest[0]= B>>22;

  1104.                     dest[1]= G>>22;

  1105.                     dest[2]= R>>22;

  1106.                     dest+= step;

  1107.                 }

  1108.             }

  1109.         }

  1110.         break;

  1111.     default:

  1112.         assert(0);

  1113.     }

  1114. }

  1115. 

  1116. static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val){

  1117.     int i;

  1118.     uint8_t *ptr = plane + stride*y;

  1119.     for (i=0; i<height; i++){

  1120.         memset(ptr, val, width);

  1121.         ptr += stride;

  1122.     }

  1123. }

  1124. 

  1125. #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\

  1126. static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\

  1127. {\

  1128.     int i;\

  1129.     for (i=0; i<width; i++)\

  1130.     {\

  1131.         int b= (((const type*)src)[i]>>shb)&maskb;\

  1132.         int g= (((const type*)src)[i]>>shg)&maskg;\

  1133.         int r= (((const type*)src)[i]>>shr)&maskr;\

  1134. \

  1135.         dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\

  1136.     }\

  1137. }

  1138. 

  1139. BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1140. BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1141. BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)

  1142. BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)

  1143. BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)

  1144. BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)

  1145. 

  1146. static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused){

  1147.     int i;

  1148.     for (i=0; i<width; i++){

  1149.         dst[i]= src[4*i];

  1150.     }

  1151. }

  1152. 

  1153. #define BGR2UV(type, name, shr, shg, shb, maska, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S)\

  1154. static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1155. {\

  1156.     int i;\

  1157.     for (i=0; i<width; i++)\

  1158.     {\

  1159.         int b= (((const type*)src)[i]&maskb)>>shb;\

  1160.         int g= (((const type*)src)[i]&maskg)>>shg;\

  1161.         int r= (((const type*)src)[i]&maskr)>>shr;\

  1162. \

  1163.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\

  1164.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\

  1165.     }\

  1166. }\

  1167. static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1168. {\

  1169.     int i;\

  1170.     for (i=0; i<width; i++)\

  1171.     {\

  1172.         int pix0= ((const type*)src)[2*i+0];\

  1173.         int pix1= ((const type*)src)[2*i+1];\

  1174.         int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\

  1175.         int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\

  1176.         int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\

  1177.         g&= maskg|(2*maskg);\

  1178. \

  1179.         g>>=shg;\

  1180. \

  1181.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\

  1182.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\

  1183.     }\

  1184. }

  1185. 

  1186. BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0xFF000000, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1187. BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0xFF000000,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1188. BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0,          0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)

  1189. BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0,          0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)

  1190. BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0,          0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)

  1191. BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0,          0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)

  1192. 

  1193. static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)

  1194. {

  1195.     int i;

  1196.     for (i=0; i<width; i++)

  1197.     {

  1198.         int d= src[i];

  1199. 

  1200.         dst[i]= pal[d] & 0xFF;

  1201.     }

  1202. }

  1203. 

  1204. static inline void palToUV(uint8_t *dstU, uint8_t *dstV,

  1205.                            const uint8_t *src1, const uint8_t *src2,

  1206.                            long width, uint32_t *pal)

  1207. {

  1208.     int i;

  1209.     assert(src1 == src2);

  1210.     for (i=0; i<width; i++)

  1211.     {

  1212.         int p= pal[src1[i]];

  1213. 

  1214.         dstU[i]= p>>8;

  1215.         dstV[i]= p>>16;

  1216.     }

  1217. }

  1218. 

  1219. static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1220. {

  1221.     int i, j;

  1222.     for (i=0; i<width/8; i++){

  1223.         int d= ~src[i];

  1224.         for(j=0; j<8; j++)

  1225.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1226.     }

  1227. }

  1228. 

  1229. static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1230. {

  1231.     int i, j;

  1232.     for (i=0; i<width/8; i++){

  1233.         int d= src[i];

  1234.         for(j=0; j<8; j++)

  1235.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1236.     }

  1237. }

  1238. 

  1239. 

  1240. //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one

  1241. //Plain C versions

  1242. #if !HAVE_MMX || CONFIG_RUNTIME_CPUDETECT || !CONFIG_GPL

  1243. #define COMPILE_C

  1244. #endif

  1245. 

  1246. #if ARCH_PPC

  1247. #if (HAVE_ALTIVEC || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1248. #undef COMPILE_C

  1249. #define COMPILE_ALTIVEC

  1250. #endif

  1251. #endif //ARCH_PPC

  1252. 

  1253. #if ARCH_X86

  1254. 

  1255. #if ((HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1256. #define COMPILE_MMX

  1257. #endif

  1258. 

  1259. #if (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1260. #define COMPILE_MMX2

  1261. #endif

  1262. 

  1263. #if ((HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1264. #define COMPILE_3DNOW

  1265. #endif

  1266. #endif //ARCH_X86

  1267. 

  1268. #undef HAVE_MMX

  1269. #undef HAVE_MMX2

  1270. #undef HAVE_AMD3DNOW

  1271. #undef HAVE_ALTIVEC

  1272. #define HAVE_MMX 0

  1273. #define HAVE_MMX2 0

  1274. #define HAVE_AMD3DNOW 0

  1275. #define HAVE_ALTIVEC 0

  1276. 

  1277. #ifdef COMPILE_C

  1278. #define RENAME(a) a ## _C

  1279. #include "swscale_template.c"

  1280. #endif

  1281. 

  1282. #ifdef COMPILE_ALTIVEC

  1283. #undef RENAME

  1284. #undef HAVE_ALTIVEC

  1285. #define HAVE_ALTIVEC 1

  1286. #define RENAME(a) a ## _altivec

  1287. #include "swscale_template.c"

  1288. #endif

  1289. 

  1290. #if ARCH_X86

  1291. 

  1292. //MMX versions

  1293. #ifdef COMPILE_MMX

  1294. #undef RENAME

  1295. #undef HAVE_MMX

  1296. #undef HAVE_MMX2

  1297. #undef HAVE_AMD3DNOW

  1298. #define HAVE_MMX 1

  1299. #define HAVE_MMX2 0

  1300. #define HAVE_AMD3DNOW 0

  1301. #define RENAME(a) a ## _MMX

  1302. #include "swscale_template.c"

  1303. #endif

  1304. 

  1305. //MMX2 versions

  1306. #ifdef COMPILE_MMX2

  1307. #undef RENAME

  1308. #undef HAVE_MMX

  1309. #undef HAVE_MMX2

  1310. #undef HAVE_AMD3DNOW

  1311. #define HAVE_MMX 1

  1312. #define HAVE_MMX2 1

  1313. #define HAVE_AMD3DNOW 0

  1314. #define RENAME(a) a ## _MMX2

  1315. #include "swscale_template.c"

  1316. #endif

  1317. 

  1318. //3DNOW versions

  1319. #ifdef COMPILE_3DNOW

  1320. #undef RENAME

  1321. #undef HAVE_MMX

  1322. #undef HAVE_MMX2

  1323. #undef HAVE_AMD3DNOW

  1324. #define HAVE_MMX 1

  1325. #define HAVE_MMX2 0

  1326. #define HAVE_AMD3DNOW 1

  1327. #define RENAME(a) a ## _3DNow

  1328. #include "swscale_template.c"

  1329. #endif

  1330. 

  1331. #endif //ARCH_X86

  1332. 

  1333. // minor note: the HAVE_xyz are messed up after this line so don't use them

  1334. 

  1335. static double getSplineCoeff(double a, double b, double c, double d, double dist)

  1336. {

  1337. //    printf("%f %f %f %f %f\n", a,b,c,d,dist);

  1338.     if (dist<=1.0)      return ((d*dist + c)*dist + b)*dist +a;

  1339.     else                return getSplineCoeff(        0.0,

  1340.                                              b+ 2.0*c + 3.0*d,

  1341.                                                     c + 3.0*d,

  1342.                                             -b- 3.0*c - 6.0*d,

  1343.                                             dist-1.0);

  1344. }

  1345. 

  1346. static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,

  1347.                              int srcW, int dstW, int filterAlign, int one, int flags,

  1348.                              SwsVector *srcFilter, SwsVector *dstFilter, double param[2])

  1349. {

  1350.     int i;

  1351.     int filterSize;

  1352.     int filter2Size;

  1353.     int minFilterSize;

  1354.     int64_t *filter=NULL;

  1355.     int64_t *filter2=NULL;

  1356.     const int64_t fone= 1LL<<54;

  1357.     int ret= -1;

  1358. #if ARCH_X86

  1359.     if (flags & SWS_CPU_CAPS_MMX)

  1360.         __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)

  1361. #endif

  1362. 

  1363.     // NOTE: the +1 is for the MMX scaler which reads over the end

  1364.     *filterPos = av_malloc((dstW+1)*sizeof(int16_t));

  1365. 

  1366.     if (FFABS(xInc - 0x10000) <10) // unscaled

  1367.     {

  1368.         int i;

  1369.         filterSize= 1;

  1370.         filter= av_mallocz(dstW*sizeof(*filter)*filterSize);

  1371. 

  1372.         for (i=0; i<dstW; i++)

  1373.         {

  1374.             filter[i*filterSize]= fone;

  1375.             (*filterPos)[i]=i;

  1376.         }

  1377. 

  1378.     }

  1379.     else if (flags&SWS_POINT) // lame looking point sampling mode

  1380.     {

  1381.         int i;

  1382.         int xDstInSrc;

  1383.         filterSize= 1;

  1384.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1385. 

  1386.         xDstInSrc= xInc/2 - 0x8000;

  1387.         for (i=0; i<dstW; i++)

  1388.         {

  1389.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1390. 

  1391.             (*filterPos)[i]= xx;

  1392.             filter[i]= fone;

  1393.             xDstInSrc+= xInc;

  1394.         }

  1395.     }

  1396.     else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale

  1397.     {

  1398.         int i;

  1399.         int xDstInSrc;

  1400.         if      (flags&SWS_BICUBIC) filterSize= 4;

  1401.         else if (flags&SWS_X      ) filterSize= 4;

  1402.         else                        filterSize= 2; // SWS_BILINEAR / SWS_AREA

  1403.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1404. 

  1405.         xDstInSrc= xInc/2 - 0x8000;

  1406.         for (i=0; i<dstW; i++)

  1407.         {

  1408.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1409.             int j;

  1410. 

  1411.             (*filterPos)[i]= xx;

  1412.                 //bilinear upscale / linear interpolate / area averaging

  1413.                 for (j=0; j<filterSize; j++)

  1414.                 {

  1415.                     int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);

  1416.                     if (coeff<0) coeff=0;

  1417.                     filter[i*filterSize + j]= coeff;

  1418.                     xx++;

  1419.                 }

  1420.             xDstInSrc+= xInc;

  1421.         }

  1422.     }

  1423.     else

  1424.     {

  1425.         int xDstInSrc;

  1426.         int sizeFactor;

  1427. 

  1428.         if      (flags&SWS_BICUBIC)      sizeFactor=  4;

  1429.         else if (flags&SWS_X)            sizeFactor=  8;

  1430.         else if (flags&SWS_AREA)         sizeFactor=  1; //downscale only, for upscale it is bilinear

  1431.         else if (flags&SWS_GAUSS)        sizeFactor=  8;   // infinite ;)

  1432.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;

  1433.         else if (flags&SWS_SINC)         sizeFactor= 20; // infinite ;)

  1434.         else if (flags&SWS_SPLINE)       sizeFactor= 20;  // infinite ;)

  1435.         else if (flags&SWS_BILINEAR)     sizeFactor=  2;

  1436.         else {

  1437.             sizeFactor= 0; //GCC warning killer

  1438.             assert(0);

  1439.         }

  1440. 

  1441.         if (xInc <= 1<<16)      filterSize= 1 + sizeFactor; // upscale

  1442.         else                    filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;

  1443. 

  1444.         if (filterSize > srcW-2) filterSize=srcW-2;

  1445. 

  1446.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1447. 

  1448.         xDstInSrc= xInc - 0x10000;

  1449.         for (i=0; i<dstW; i++)

  1450.         {

  1451.             int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);

  1452.             int j;

  1453.             (*filterPos)[i]= xx;

  1454.             for (j=0; j<filterSize; j++)

  1455.             {

  1456.                 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;

  1457.                 double floatd;

  1458.                 int64_t coeff;

  1459. 

  1460.                 if (xInc > 1<<16)

  1461.                     d= d*dstW/srcW;

  1462.                 floatd= d * (1.0/(1<<30));

  1463. 

  1464.                 if (flags & SWS_BICUBIC)

  1465.                 {

  1466.                     int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] :   0) * (1<<24);

  1467.                     int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);

  1468.                     int64_t dd = ( d*d)>>30;

  1469.                     int64_t ddd= (dd*d)>>30;

  1470. 

  1471.                     if      (d < 1LL<<30)

  1472.                         coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);

  1473.                     else if (d < 1LL<<31)

  1474.                         coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);

  1475.                     else

  1476.                         coeff=0.0;

  1477.                     coeff *= fone>>(30+24);

  1478.                 }

  1479. /*                else if (flags & SWS_X)

  1480.                 {

  1481.                     double p= param ? param*0.01 : 0.3;

  1482.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1483.                     coeff*= pow(2.0, - p*d*d);

  1484.                 }*/

  1485.                 else if (flags & SWS_X)

  1486.                 {

  1487.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1488.                     double c;

  1489. 

  1490.                     if (floatd<1.0)

  1491.                         c = cos(floatd*PI);

  1492.                     else

  1493.                         c=-1.0;

  1494.                     if (c<0.0)      c= -pow(-c, A);

  1495.                     else            c=  pow( c, A);

  1496.                     coeff= (c*0.5 + 0.5)*fone;

  1497.                 }

  1498.                 else if (flags & SWS_AREA)

  1499.                 {

  1500.                     int64_t d2= d - (1<<29);

  1501.                     if      (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));

  1502.                     else if (d2*xInc <  (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));

  1503.                     else coeff=0.0;

  1504.                     coeff *= fone>>(30+16);

  1505.                 }

  1506.                 else if (flags & SWS_GAUSS)

  1507.                 {

  1508.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1509.                     coeff = (pow(2.0, - p*floatd*floatd))*fone;

  1510.                 }

  1511.                 else if (flags & SWS_SINC)

  1512.                 {

  1513.                     coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;

  1514.                 }

  1515.                 else if (flags & SWS_LANCZOS)

  1516.                 {

  1517.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1518.                     coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;

  1519.                     if (floatd>p) coeff=0;

  1520.                 }

  1521.                 else if (flags & SWS_BILINEAR)

  1522.                 {

  1523.                     coeff= (1<<30) - d;

  1524.                     if (coeff<0) coeff=0;

  1525.                     coeff *= fone >> 30;

  1526.                 }

  1527.                 else if (flags & SWS_SPLINE)

  1528.                 {

  1529.                     double p=-2.196152422706632;

  1530.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;

  1531.                 }

  1532.                 else {

  1533.                     coeff= 0.0; //GCC warning killer

  1534.                     assert(0);

  1535.                 }

  1536. 

  1537.                 filter[i*filterSize + j]= coeff;

  1538.                 xx++;

  1539.             }

  1540.             xDstInSrc+= 2*xInc;

  1541.         }

  1542.     }

  1543. 

  1544.     /* apply src & dst Filter to filter -> filter2

  1545.        av_free(filter);

  1546.     */

  1547.     assert(filterSize>0);

  1548.     filter2Size= filterSize;

  1549.     if (srcFilter) filter2Size+= srcFilter->length - 1;

  1550.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1551.     assert(filter2Size>0);

  1552.     filter2= av_mallocz(filter2Size*dstW*sizeof(*filter2));

  1553. 

  1554.     for (i=0; i<dstW; i++)

  1555.     {

  1556.         int j, k;

  1557. 

  1558.         if(srcFilter){

  1559.             for (k=0; k<srcFilter->length; k++){

  1560.                 for (j=0; j<filterSize; j++)

  1561.                     filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];

  1562.             }

  1563.         }else{

  1564.             for (j=0; j<filterSize; j++)

  1565.                 filter2[i*filter2Size + j]= filter[i*filterSize + j];

  1566.         }

  1567.         //FIXME dstFilter

  1568. 

  1569.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1570.     }

  1571.     av_freep(&filter);

  1572. 

  1573.     /* try to reduce the filter-size (step1 find size and shift left) */

  1574.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1575.     minFilterSize= 0;

  1576.     for (i=dstW-1; i>=0; i--)

  1577.     {

  1578.         int min= filter2Size;

  1579.         int j;

  1580.         int64_t cutOff=0.0;

  1581. 

  1582.         /* get rid off near zero elements on the left by shifting left */

  1583.         for (j=0; j<filter2Size; j++)

  1584.         {

  1585.             int k;

  1586.             cutOff += FFABS(filter2[i*filter2Size]);

  1587. 

  1588.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1589. 

  1590.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1591.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1592. 

  1593.             // move filter coefficients left

  1594.             for (k=1; k<filter2Size; k++)

  1595.                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1596.             filter2[i*filter2Size + k - 1]= 0;

  1597.             (*filterPos)[i]++;

  1598.         }

  1599. 

  1600.         cutOff=0;

  1601.         /* count near zeros on the right */

  1602.         for (j=filter2Size-1; j>0; j--)

  1603.         {

  1604.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1605. 

  1606.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1607.             min--;

  1608.         }

  1609. 

  1610.         if (min>minFilterSize) minFilterSize= min;

  1611.     }

  1612. 

  1613.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1614.         // we can handle the special case 4,

  1615.         // so we don't want to go to the full 8

  1616.         if (minFilterSize < 5)

  1617.             filterAlign = 4;

  1618. 

  1619.         // We really don't want to waste our time

  1620.         // doing useless computation, so fall back on

  1621.         // the scalar C code for very small filters.

  1622.         // Vectorizing is worth it only if you have a

  1623.         // decent-sized vector.

  1624.         if (minFilterSize < 3)

  1625.             filterAlign = 1;

  1626.     }

  1627. 

  1628.     if (flags & SWS_CPU_CAPS_MMX) {

  1629.         // special case for unscaled vertical filtering

  1630.         if (minFilterSize == 1 && filterAlign == 2)

  1631.             filterAlign= 1;

  1632.     }

  1633. 

  1634.     assert(minFilterSize > 0);

  1635.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1636.     assert(filterSize > 0);

  1637.     filter= av_malloc(filterSize*dstW*sizeof(*filter));

  1638.     if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)

  1639.         goto error;

  1640.     *outFilterSize= filterSize;

  1641. 

  1642.     if (flags&SWS_PRINT_INFO)

  1643.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1644.     /* try to reduce the filter-size (step2 reduce it) */

  1645.     for (i=0; i<dstW; i++)

  1646.     {

  1647.         int j;

  1648. 

  1649.         for (j=0; j<filterSize; j++)

  1650.         {

  1651.             if (j>=filter2Size) filter[i*filterSize + j]= 0;

  1652.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1653.             if((flags & SWS_BITEXACT) && j>=minFilterSize)

  1654.                 filter[i*filterSize + j]= 0;

  1655.         }

  1656.     }

  1657. 

  1658. 

  1659.     //FIXME try to align filterPos if possible

  1660. 

  1661.     //fix borders

  1662.     for (i=0; i<dstW; i++)

  1663.     {

  1664.         int j;

  1665.         if ((*filterPos)[i] < 0)

  1666.         {

  1667.             // move filter coefficients left to compensate for filterPos

  1668.             for (j=1; j<filterSize; j++)

  1669.             {

  1670.                 int left= FFMAX(j + (*filterPos)[i], 0);

  1671.                 filter[i*filterSize + left] += filter[i*filterSize + j];

  1672.                 filter[i*filterSize + j]=0;

  1673.             }

  1674.             (*filterPos)[i]= 0;

  1675.         }

  1676. 

  1677.         if ((*filterPos)[i] + filterSize > srcW)

  1678.         {

  1679.             int shift= (*filterPos)[i] + filterSize - srcW;

  1680.             // move filter coefficients right to compensate for filterPos

  1681.             for (j=filterSize-2; j>=0; j--)

  1682.             {

  1683.                 int right= FFMIN(j + shift, filterSize-1);

  1684.                 filter[i*filterSize +right] += filter[i*filterSize +j];

  1685.                 filter[i*filterSize +j]=0;

  1686.             }

  1687.             (*filterPos)[i]= srcW - filterSize;

  1688.         }

  1689.     }

  1690. 

  1691.     // Note the +1 is for the MMX scaler which reads over the end

  1692.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1693.     *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));

  1694. 

  1695.     /* normalize & store in outFilter */

  1696.     for (i=0; i<dstW; i++)

  1697.     {

  1698.         int j;

  1699.         int64_t error=0;

  1700.         int64_t sum=0;

  1701. 

  1702.         for (j=0; j<filterSize; j++)

  1703.         {

  1704.             sum+= filter[i*filterSize + j];

  1705.         }

  1706.         sum= (sum + one/2)/ one;

  1707.         for (j=0; j<*outFilterSize; j++)

  1708.         {

  1709.             int64_t v= filter[i*filterSize + j] + error;

  1710.             int intV= ROUNDED_DIV(v, sum);

  1711.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1712.             error= v - intV*sum;

  1713.         }

  1714.     }

  1715. 

  1716.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1717.     for (i=0; i<*outFilterSize; i++)

  1718.     {

  1719.         int j= dstW*(*outFilterSize);

  1720.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1721.     }

  1722. 

  1723.     ret=0;

  1724. error:

  1725.     av_free(filter);

  1726.     av_free(filter2);

  1727.     return ret;

  1728. }

  1729. 

  1730. #ifdef COMPILE_MMX2

  1731. static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1732. {

  1733.     uint8_t *fragmentA;

  1734.     x86_reg imm8OfPShufW1A;

  1735.     x86_reg imm8OfPShufW2A;

  1736.     x86_reg fragmentLengthA;

  1737.     uint8_t *fragmentB;

  1738.     x86_reg imm8OfPShufW1B;

  1739.     x86_reg imm8OfPShufW2B;

  1740.     x86_reg fragmentLengthB;

  1741.     int fragmentPos;

  1742. 

  1743.     int xpos, i;

  1744. 

  1745.     // create an optimized horizontal scaling routine

  1746. 

  1747.     //code fragment

  1748. 

  1749.     __asm__ volatile(

  1750.         "jmp                         9f                 \n\t"

  1751.     // Begin

  1752.         "0:                                             \n\t"

  1753.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1754.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1755.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1756.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1757.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1758.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1759.         "1:                                             \n\t"

  1760.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1761.         "2:                                             \n\t"

  1762.         "psubw                    %%mm1, %%mm0          \n\t"

  1763.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1764.         "pmullw                   %%mm3, %%mm0          \n\t"

  1765.         "psllw                       $7, %%mm1          \n\t"

  1766.         "paddw                    %%mm1, %%mm0          \n\t"

  1767. 

  1768.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1769. 

  1770.         "add                         $8, %%"REG_a"      \n\t"

  1771.     // End

  1772.         "9:                                             \n\t"

  1773. //        "int $3                                         \n\t"

  1774.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1775.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1776.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1777.         "dec                         %1                 \n\t"

  1778.         "dec                         %2                 \n\t"

  1779.         "sub                         %0, %1             \n\t"

  1780.         "sub                         %0, %2             \n\t"

  1781.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1782.         "sub                         %0, %3             \n\t"

  1783. 

  1784. 

  1785.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1786.         "=r" (fragmentLengthA)

  1787.     );

  1788. 

  1789.     __asm__ volatile(

  1790.         "jmp                         9f                 \n\t"

  1791.     // Begin

  1792.         "0:                                             \n\t"

  1793.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1794.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1795.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1796.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1797.         "1:                                             \n\t"

  1798.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1799.         "2:                                             \n\t"

  1800.         "psubw                    %%mm1, %%mm0          \n\t"

  1801.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1802.         "pmullw                   %%mm3, %%mm0          \n\t"

  1803.         "psllw                       $7, %%mm1          \n\t"

  1804.         "paddw                    %%mm1, %%mm0          \n\t"

  1805. 

  1806.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1807. 

  1808.         "add                         $8, %%"REG_a"      \n\t"

  1809.     // End

  1810.         "9:                                             \n\t"

  1811. //        "int                       $3                   \n\t"

  1812.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1813.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1814.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1815.         "dec                         %1                 \n\t"

  1816.         "dec                         %2                 \n\t"

  1817.         "sub                         %0, %1             \n\t"

  1818.         "sub                         %0, %2             \n\t"

  1819.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1820.         "sub                         %0, %3             \n\t"

  1821. 

  1822. 

  1823.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1824.         "=r" (fragmentLengthB)

  1825.     );

  1826. 

  1827.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1828.     fragmentPos=0;

  1829. 

  1830.     for (i=0; i<dstW/numSplits; i++)

  1831.     {

  1832.         int xx=xpos>>16;

  1833. 

  1834.         if ((i&3) == 0)

  1835.         {

  1836.             int a=0;

  1837.             int b=((xpos+xInc)>>16) - xx;

  1838.             int c=((xpos+xInc*2)>>16) - xx;

  1839.             int d=((xpos+xInc*3)>>16) - xx;

  1840. 

  1841.             filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;

  1842.             filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1843.             filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1844.             filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1845.             filterPos[i/2]= xx;

  1846. 

  1847.             if (d+1<4)

  1848.             {

  1849.                 int maxShift= 3-(d+1);

  1850.                 int shift=0;

  1851. 

  1852.                 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);

  1853. 

  1854.                 funnyCode[fragmentPos + imm8OfPShufW1B]=

  1855.                     (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);

  1856.                 funnyCode[fragmentPos + imm8OfPShufW2B]=

  1857.                     a | (b<<2) | (c<<4) | (d<<6);

  1858. 

  1859.                 if (i+3>=dstW) shift=maxShift; //avoid overread

  1860.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1861. 

  1862.                 if (shift && i>=shift)

  1863.                 {

  1864.                     funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;

  1865.                     funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;

  1866.                     filterPos[i/2]-=shift;

  1867.                 }

  1868. 

  1869.                 fragmentPos+= fragmentLengthB;

  1870.             }

  1871.             else

  1872.             {

  1873.                 int maxShift= 3-d;

  1874.                 int shift=0;

  1875. 

  1876.                 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);

  1877. 

  1878.                 funnyCode[fragmentPos + imm8OfPShufW1A]=

  1879.                 funnyCode[fragmentPos + imm8OfPShufW2A]=

  1880.                     a | (b<<2) | (c<<4) | (d<<6);

  1881. 

  1882.                 if (i+4>=dstW) shift=maxShift; //avoid overread

  1883.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align

  1884. 

  1885.                 if (shift && i>=shift)

  1886.                 {

  1887.                     funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;

  1888.                     funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;

  1889.                     filterPos[i/2]-=shift;

  1890.                 }

  1891. 

  1892.                 fragmentPos+= fragmentLengthA;

  1893.             }

  1894. 

  1895.             funnyCode[fragmentPos]= RET;

  1896.         }

  1897.         xpos+=xInc;

  1898.     }

  1899.     filterPos[((i/2)+1)&(~1)]= xpos>>16; // needed to jump to the next part

  1900. }

  1901. #endif /* COMPILE_MMX2 */

  1902. 

  1903. static void globalInit(void){

  1904.     // generating tables:

  1905.     int i;

  1906.     for (i=0; i<768; i++){

  1907.         int c= av_clip_uint8(i-256);

  1908.         clip_table[i]=c;

  1909.     }

  1910. }

  1911. 

  1912. static SwsFunc getSwsFunc(SwsContext *c)

  1913. {

  1914. #if CONFIG_RUNTIME_CPUDETECT && CONFIG_GPL

  1915.     int flags = c->flags;

  1916. 

  1917. #if ARCH_X86

  1918.     // ordered per speed fastest first

  1919.     if (flags & SWS_CPU_CAPS_MMX2) {

  1920.         sws_init_swScale_MMX2(c);

  1921.         return swScale_MMX2;

  1922.     } else if (flags & SWS_CPU_CAPS_3DNOW) {

  1923.         sws_init_swScale_3DNow(c);

  1924.         return swScale_3DNow;

  1925.     } else if (flags & SWS_CPU_CAPS_MMX) {

  1926.         sws_init_swScale_MMX(c);

  1927.         return swScale_MMX;

  1928.     } else {

  1929.         sws_init_swScale_C(c);

  1930.         return swScale_C;

  1931.     }

  1932. 

  1933. #else

  1934. #if ARCH_PPC

  1935.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1936.         sws_init_swScale_altivec(c);

  1937.         return swScale_altivec;

  1938.     } else {

  1939.         sws_init_swScale_C(c);

  1940.         return swScale_C;

  1941.     }

  1942. #endif

  1943.     sws_init_swScale_C(c);

  1944.     return swScale_C;

  1945. #endif /* ARCH_X86 */

  1946. #else //CONFIG_RUNTIME_CPUDETECT

  1947. #if   HAVE_MMX2

  1948.     sws_init_swScale_MMX2(c);

  1949.     return swScale_MMX2;

  1950. #elif HAVE_AMD3DNOW

  1951.     sws_init_swScale_3DNow(c);

  1952.     return swScale_3DNow;

  1953. #elif HAVE_MMX

  1954.     sws_init_swScale_MMX(c);

  1955.     return swScale_MMX;

  1956. #elif HAVE_ALTIVEC

  1957.     sws_init_swScale_altivec(c);

  1958.     return swScale_altivec;

  1959. #else

  1960.     sws_init_swScale_C(c);

  1961.     return swScale_C;

  1962. #endif

  1963. #endif //!CONFIG_RUNTIME_CPUDETECT

  1964. }

  1965. 

  1966. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1967.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1968.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1969.     /* Copy Y plane */

  1970.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1971.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1972.     else

  1973.     {

  1974.         int i;

  1975.         const uint8_t *srcPtr= src[0];

  1976.         uint8_t *dstPtr= dst;

  1977.         for (i=0; i<srcSliceH; i++)

  1978.         {

  1979.             memcpy(dstPtr, srcPtr, c->srcW);

  1980.             srcPtr+= srcStride[0];

  1981.             dstPtr+= dstStride[0];

  1982.         }

  1983.     }

  1984.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1985.     if (c->dstFormat == PIX_FMT_NV12)

  1986.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  1987.     else

  1988.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  1989. 

  1990.     return srcSliceH;

  1991. }

  1992. 

  1993. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1994.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

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

  1996. 

  1997.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1998. 

  1999.     return srcSliceH;

  2000. }

  2001. 

  2002. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2003.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2004.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2005. 

  2006.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  2007. 

  2008.     return srcSliceH;

  2009. }

  2010. 

  2011. static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2012.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2013.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2014. 

  2015.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  2016. 

  2017.     return srcSliceH;

  2018. }

  2019. 

  2020. static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

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

  2022.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2023. 

  2024.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  2025. 

  2026.     return srcSliceH;

  2027. }

  2028. 

  2029. static int YUYV2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2030.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

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

  2032.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  2033.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  2034. 

  2035.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2036. 

  2037.     if (dstParam[3])

  2038.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2039. 

  2040.     return srcSliceH;

  2041. }

  2042. 

  2043. static int YUYV2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2044.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2045.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2046.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  2047.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  2048. 

  2049.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2050. 

  2051.     return srcSliceH;

  2052. }

  2053. 

  2054. static int UYVY2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2055.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2056.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2057.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  2058.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  2059. 

  2060.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2061. 

  2062.     if (dstParam[3])

  2063.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2064. 

  2065.     return srcSliceH;

  2066. }

  2067. 

  2068. static int UYVY2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2069.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2070.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2071.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  2072.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  2073. 

  2074.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2075. 

  2076.     return srcSliceH;

  2077. }

  2078. 

  2079. static int pal2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2080.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  2081.     const enum PixelFormat srcFormat= c->srcFormat;

  2082.     const enum PixelFormat dstFormat= c->dstFormat;

  2083.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  2084.                  const uint8_t *palette)=NULL;

  2085.     int i;

  2086.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2087.     uint8_t *srcPtr= src[0];

  2088. 

  2089.     if (!usePal(srcFormat))

  2090.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2091.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  2092. 

  2093.     switch(dstFormat){

  2094.     case PIX_FMT_RGB32  : conv = palette8topacked32; break;

  2095.     case PIX_FMT_BGR32  : conv = palette8topacked32; break;

  2096.     case PIX_FMT_BGR32_1: conv = palette8topacked32; break;

  2097.     case PIX_FMT_RGB32_1: conv = palette8topacked32; break;

  2098.     case PIX_FMT_RGB24  : conv = palette8topacked24; break;

  2099.     case PIX_FMT_BGR24  : conv = palette8topacked24; break;

  2100.     default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2101.                     sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2102.     }

  2103. 

  2104. 

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

  2106.         conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  2107.         srcPtr+= srcStride[0];

  2108.         dstPtr+= dstStride[0];

  2109.     }

  2110. 

  2111.     return srcSliceH;

  2112. }

  2113. 

  2114. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  2115. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2116.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  2117.     const enum PixelFormat srcFormat= c->srcFormat;

  2118.     const enum PixelFormat dstFormat= c->dstFormat;

  2119.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  2120.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  2121.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  2122.     const int dstId= fmt_depth(dstFormat) >> 2;

  2123.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  2124. 

  2125.     /* BGR -> BGR */

  2126.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  2127.        || (isRGB(srcFormat) && isRGB(dstFormat))){

  2128.         switch(srcId | (dstId<<4)){

  2129.         case 0x34: conv= rgb16to15; break;

  2130.         case 0x36: conv= rgb24to15; break;

  2131.         case 0x38: conv= rgb32to15; break;

  2132.         case 0x43: conv= rgb15to16; break;

  2133.         case 0x46: conv= rgb24to16; break;

  2134.         case 0x48: conv= rgb32to16; break;

  2135.         case 0x63: conv= rgb15to24; break;

  2136.         case 0x64: conv= rgb16to24; break;

  2137.         case 0x68: conv= rgb32to24; break;

  2138.         case 0x83: conv= rgb15to32; break;

  2139.         case 0x84: conv= rgb16to32; break;

  2140.         case 0x86: conv= rgb24to32; break;

  2141.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2142.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2143.         }

  2144.     }else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  2145.              || (isRGB(srcFormat) && isBGR(dstFormat))){

  2146.         switch(srcId | (dstId<<4)){

  2147.         case 0x33: conv= rgb15tobgr15; break;

  2148.         case 0x34: conv= rgb16tobgr15; break;

  2149.         case 0x36: conv= rgb24tobgr15; break;

  2150.         case 0x38: conv= rgb32tobgr15; break;

  2151.         case 0x43: conv= rgb15tobgr16; break;

  2152.         case 0x44: conv= rgb16tobgr16; break;

  2153.         case 0x46: conv= rgb24tobgr16; break;

  2154.         case 0x48: conv= rgb32tobgr16; break;

  2155.         case 0x63: conv= rgb15tobgr24; break;

  2156.         case 0x64: conv= rgb16tobgr24; break;

  2157.         case 0x66: conv= rgb24tobgr24; break;

  2158.         case 0x68: conv= rgb32tobgr24; break;

  2159.         case 0x83: conv= rgb15tobgr32; break;

  2160.         case 0x84: conv= rgb16tobgr32; break;

  2161.         case 0x86: conv= rgb24tobgr32; break;

  2162.         case 0x88: conv= rgb32tobgr32; break;

  2163.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2164.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2165.         }

  2166.     }else{

  2167.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2168.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  2169.     }

  2170. 

  2171.     if(conv)

  2172.     {

  2173.         uint8_t *srcPtr= src[0];

  2174.         if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)

  2175.             srcPtr += ALT32_CORR;

  2176. 

  2177.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  2178.             conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  2179.         else

  2180.         {

  2181.             int i;

  2182.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2183. 

  2184.             for (i=0; i<srcSliceH; i++)

  2185.             {

  2186.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  2187.                 srcPtr+= srcStride[0];

  2188.                 dstPtr+= dstStride[0];

  2189.             }

  2190.         }

  2191.     }

  2192.     return srcSliceH;

  2193. }

  2194. 

  2195. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2196.                               int srcSliceH, uint8_t* dst[], int dstStride[]){

  2197. 

  2198.     rgb24toyv12(

  2199.         src[0],

  2200.         dst[0]+ srcSliceY    *dstStride[0],

  2201.         dst[1]+(srcSliceY>>1)*dstStride[1],

  2202.         dst[2]+(srcSliceY>>1)*dstStride[2],

  2203.         c->srcW, srcSliceH,

  2204.         dstStride[0], dstStride[1], srcStride[0]);

  2205.     if (dst[3])

  2206.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2207.     return srcSliceH;

  2208. }

  2209. 

  2210. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2211.                              int srcSliceH, uint8_t* dst[], int dstStride[]){

  2212.     int i;

  2213. 

  2214.     /* copy Y */

  2215.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  2216.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  2217.     else{

  2218.         uint8_t *srcPtr= src[0];

  2219.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2220. 

  2221.         for (i=0; i<srcSliceH; i++)

  2222.         {

  2223.             memcpy(dstPtr, srcPtr, c->srcW);

  2224.             srcPtr+= srcStride[0];

  2225.             dstPtr+= dstStride[0];

  2226.         }

  2227.     }

  2228. 

  2229.     if (c->dstFormat==PIX_FMT_YUV420P || c->dstFormat==PIX_FMT_YUVA420P){

  2230.         planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  2231.                  srcSliceH >> 2, srcStride[1], dstStride[1]);

  2232.         planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  2233.                  srcSliceH >> 2, srcStride[2], dstStride[2]);

  2234.     }else{

  2235.         planar2x(src[1], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  2236.                  srcSliceH >> 2, srcStride[1], dstStride[2]);

  2237.         planar2x(src[2], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  2238.                  srcSliceH >> 2, srcStride[2], dstStride[1]);

  2239.     }

  2240.     if (dst[3])

  2241.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2242.     return srcSliceH;

  2243. }

  2244. 

  2245. /* unscaled copy like stuff (assumes nearly identical formats) */

  2246. static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2247.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2248. {

  2249.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  2250.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  2251.     else

  2252.     {

  2253.         int i;

  2254.         uint8_t *srcPtr= src[0];

  2255.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2256.         int length=0;

  2257. 

  2258.         /* universal length finder */

  2259.         while(length+c->srcW <= FFABS(dstStride[0])

  2260.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  2261.         assert(length!=0);

  2262. 

  2263.         for (i=0; i<srcSliceH; i++)

  2264.         {

  2265.             memcpy(dstPtr, srcPtr, length);

  2266.             srcPtr+= srcStride[0];

  2267.             dstPtr+= dstStride[0];

  2268.         }

  2269.     }

  2270.     return srcSliceH;

  2271. }

  2272. 

  2273. static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2274.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2275. {

  2276.     int plane, i, j;

  2277.     for (plane=0; plane<4; plane++)

  2278.     {

  2279.         int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  2280.         int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  2281.         int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  2282.         uint8_t *srcPtr= src[plane];

  2283.         uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  2284. 

  2285.         if (!dst[plane]) continue;

  2286.         // ignore palette for GRAY8

  2287.         if (plane == 1 && !dst[2]) continue;

  2288.         if (!src[plane] || (plane == 1 && !src[2])){

  2289.             if(is16BPS(c->dstFormat))

  2290.                 length*=2;

  2291.             fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);

  2292.         }else

  2293.         {

  2294.             if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)){

  2295.                 if (!isBE(c->srcFormat)) srcPtr++;

  2296.                 for (i=0; i<height; i++){

  2297.                     for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  2298.                     srcPtr+= srcStride[plane];

  2299.                     dstPtr+= dstStride[plane];

  2300.                 }

  2301.             }else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)){

  2302.                 for (i=0; i<height; i++){

  2303.                     for (j=0; j<length; j++){

  2304.                         dstPtr[ j<<1   ] = srcPtr[j];

  2305.                         dstPtr[(j<<1)+1] = srcPtr[j];

  2306.                     }

  2307.                     srcPtr+= srcStride[plane];

  2308.                     dstPtr+= dstStride[plane];

  2309.                 }

  2310.             }else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)

  2311.                   && isBE(c->srcFormat) != isBE(c->dstFormat)){

  2312. 

  2313.                 for (i=0; i<height; i++){

  2314.                     for (j=0; j<length; j++)

  2315.                         ((uint16_t*)dstPtr)[j] = bswap_16(((uint16_t*)srcPtr)[j]);

  2316.                     srcPtr+= srcStride[plane];

  2317.                     dstPtr+= dstStride[plane];

  2318.                 }

  2319.             } else if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  2320.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  2321.             else

  2322.             {

  2323.                 if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))

  2324.                     length*=2;

  2325.                 for (i=0; i<height; i++)

  2326.                 {

  2327.                     memcpy(dstPtr, srcPtr, length);

  2328.                     srcPtr+= srcStride[plane];

  2329.                     dstPtr+= dstStride[plane];

  2330.                 }

  2331.             }

  2332.         }

  2333.     }

  2334.     return srcSliceH;

  2335. }

  2336. 

  2337. 

  2338. static void getSubSampleFactors(int *h, int *v, int format){

  2339.     switch(format){

  2340.     case PIX_FMT_UYVY422:

  2341.     case PIX_FMT_YUYV422:

  2342.         *h=1;

  2343.         *v=0;

  2344.         break;

  2345.     case PIX_FMT_YUV420P:

  2346.     case PIX_FMT_YUV420PLE:

  2347.     case PIX_FMT_YUV420PBE:

  2348.     case PIX_FMT_YUVA420P:

  2349.     case PIX_FMT_GRAY16BE:

  2350.     case PIX_FMT_GRAY16LE:

  2351.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  2352.     case PIX_FMT_NV12:

  2353.     case PIX_FMT_NV21:

  2354.         *h=1;

  2355.         *v=1;

  2356.         break;

  2357.     case PIX_FMT_YUV440P:

  2358.         *h=0;

  2359.         *v=1;

  2360.         break;

  2361.     case PIX_FMT_YUV410P:

  2362.         *h=2;

  2363.         *v=2;

  2364.         break;

  2365.     case PIX_FMT_YUV444P:

  2366.     case PIX_FMT_YUV444PLE:

  2367.     case PIX_FMT_YUV444PBE:

  2368.         *h=0;

  2369.         *v=0;

  2370.         break;

  2371.     case PIX_FMT_YUV422P:

  2372.     case PIX_FMT_YUV422PLE:

  2373.     case PIX_FMT_YUV422PBE:

  2374.         *h=1;

  2375.         *v=0;

  2376.         break;

  2377.     case PIX_FMT_YUV411P:

  2378.         *h=2;

  2379.         *v=0;

  2380.         break;

  2381.     default:

  2382.         *h=0;

  2383.         *v=0;

  2384.         break;

  2385.     }

  2386. }

  2387. 

  2388. static uint16_t roundToInt16(int64_t f){

  2389.     int r= (f + (1<<15))>>16;

  2390.          if (r<-0x7FFF) return 0x8000;

  2391.     else if (r> 0x7FFF) return 0x7FFF;

  2392.     else                return r;

  2393. }

  2394. 

  2395. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){

  2396.     int64_t crv =  inv_table[0];

  2397.     int64_t cbu =  inv_table[1];

  2398.     int64_t cgu = -inv_table[2];

  2399.     int64_t cgv = -inv_table[3];

  2400.     int64_t cy  = 1<<16;

  2401.     int64_t oy  = 0;

  2402. 

  2403.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  2404.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  2405. 

  2406.     c->brightness= brightness;

  2407.     c->contrast  = contrast;

  2408.     c->saturation= saturation;

  2409.     c->srcRange  = srcRange;

  2410.     c->dstRange  = dstRange;

  2411.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2412. 

  2413.     c->uOffset=   0x0400040004000400LL;

  2414.     c->vOffset=   0x0400040004000400LL;

  2415. 

  2416.     if (!srcRange){

  2417.         cy= (cy*255) / 219;

  2418.         oy= 16<<16;

  2419.     }else{

  2420.         crv= (crv*224) / 255;

  2421.         cbu= (cbu*224) / 255;

  2422.         cgu= (cgu*224) / 255;

  2423.         cgv= (cgv*224) / 255;

  2424.     }

  2425. 

  2426.     cy = (cy *contrast             )>>16;

  2427.     crv= (crv*contrast * saturation)>>32;

  2428.     cbu= (cbu*contrast * saturation)>>32;

  2429.     cgu= (cgu*contrast * saturation)>>32;

  2430.     cgv= (cgv*contrast * saturation)>>32;

  2431. 

  2432.     oy -= 256*brightness;

  2433. 

  2434.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  2435.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  2436.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  2437.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  2438.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  2439.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  2440. 

  2441.     c->yuv2rgb_y_coeff  = (int16_t)roundToInt16(cy <<13);

  2442.     c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);

  2443.     c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);

  2444.     c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);

  2445.     c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);

  2446.     c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);

  2447. 

  2448.     ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  2449.     //FIXME factorize

  2450. 

  2451. #ifdef COMPILE_ALTIVEC

  2452.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  2453.         ff_yuv2rgb_init_tables_altivec(c, inv_table, brightness, contrast, saturation);

  2454. #endif

  2455.     return 0;

  2456. }

  2457. 

  2458. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){

  2459.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2460. 

  2461.     *inv_table = c->srcColorspaceTable;

  2462.     *table     = c->dstColorspaceTable;

  2463.     *srcRange  = c->srcRange;

  2464.     *dstRange  = c->dstRange;

  2465.     *brightness= c->brightness;

  2466.     *contrast  = c->contrast;

  2467.     *saturation= c->saturation;

  2468. 

  2469.     return 0;

  2470. }

  2471. 

  2472. static int handle_jpeg(enum PixelFormat *format)

  2473. {

  2474.     switch (*format) {

  2475.         case PIX_FMT_YUVJ420P:

  2476.             *format = PIX_FMT_YUV420P;

  2477.             return 1;

  2478.         case PIX_FMT_YUVJ422P:

  2479.             *format = PIX_FMT_YUV422P;

  2480.             return 1;

  2481.         case PIX_FMT_YUVJ444P:

  2482.             *format = PIX_FMT_YUV444P;

  2483.             return 1;

  2484.         case PIX_FMT_YUVJ440P:

  2485.             *format = PIX_FMT_YUV440P;

  2486.             return 1;

  2487.         default:

  2488.             return 0;

  2489.     }

  2490. }

  2491. 

  2492. SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  2493.                            SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)

  2494. {

  2495. 

  2496.     SwsContext *c;

  2497.     int i;

  2498.     int usesVFilter, usesHFilter;

  2499.     int unscaled, needsDither;

  2500.     int srcRange, dstRange;

  2501.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2502. #if ARCH_X86

  2503.     if (flags & SWS_CPU_CAPS_MMX)

  2504.         __asm__ volatile("emms\n\t"::: "memory");

  2505. #endif

  2506. 

  2507. #if !CONFIG_RUNTIME_CPUDETECT || !CONFIG_GPL //ensure that the flags match the compiled variant if cpudetect is off

  2508.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2509. #if   HAVE_MMX2

  2510.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2511. #elif HAVE_AMD3DNOW

  2512.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2513. #elif HAVE_MMX

  2514.     flags |= SWS_CPU_CAPS_MMX;

  2515. #elif HAVE_ALTIVEC

  2516.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2517. #elif ARCH_BFIN

  2518.     flags |= SWS_CPU_CAPS_BFIN;

  2519. #endif

  2520. #endif /* CONFIG_RUNTIME_CPUDETECT */

  2521.     if (clip_table[512] != 255) globalInit();

  2522.     if (!rgb15to16) sws_rgb2rgb_init(flags);

  2523. 

  2524.     unscaled = (srcW == dstW && srcH == dstH);

  2525.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2526.         && (fmt_depth(dstFormat))<24

  2527.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2528. 

  2529.     srcRange = handle_jpeg(&srcFormat);

  2530.     dstRange = handle_jpeg(&dstFormat);

  2531. 

  2532.     if (!isSupportedIn(srcFormat))

  2533.     {

  2534.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));

  2535.         return NULL;

  2536.     }

  2537.     if (!isSupportedOut(dstFormat))

  2538.     {

  2539.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));

  2540.         return NULL;

  2541.     }

  2542. 

  2543.     i= flags & ( SWS_POINT

  2544.                 |SWS_AREA

  2545.                 |SWS_BILINEAR

  2546.                 |SWS_FAST_BILINEAR

  2547.                 |SWS_BICUBIC

  2548.                 |SWS_X

  2549.                 |SWS_GAUSS

  2550.                 |SWS_LANCZOS

  2551.                 |SWS_SINC

  2552.                 |SWS_SPLINE

  2553.                 |SWS_BICUBLIN);

  2554.     if(!i || (i & (i-1)))

  2555.     {

  2556.         av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be chosen\n");

  2557.         return NULL;

  2558.     }

  2559. 

  2560.     /* sanity check */

  2561.     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

  2562.     {

  2563.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2564.                srcW, srcH, dstW, dstH);

  2565.         return NULL;

  2566.     }

  2567.     if(srcW > VOFW || dstW > VOFW){

  2568.         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile-time maximum width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");

  2569.         return NULL;

  2570.     }

  2571. 

  2572.     if (!dstFilter) dstFilter= &dummyFilter;

  2573.     if (!srcFilter) srcFilter= &dummyFilter;

  2574. 

  2575.     c= av_mallocz(sizeof(SwsContext));

  2576. 

  2577.     c->av_class = &sws_context_class;

  2578.     c->srcW= srcW;

  2579.     c->srcH= srcH;

  2580.     c->dstW= dstW;

  2581.     c->dstH= dstH;

  2582.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2583.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2584.     c->flags= flags;

  2585.     c->dstFormat= dstFormat;

  2586.     c->srcFormat= srcFormat;

  2587.     c->vRounder= 4* 0x0001000100010001ULL;

  2588. 

  2589.     usesHFilter= usesVFilter= 0;

  2590.     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;

  2591.     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;

  2592.     if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;

  2593.     if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;

  2594.     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;

  2595.     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;

  2596.     if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;

  2597.     if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;

  2598. 

  2599.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2600.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2601. 

  2602.     // reuse chroma for 2 pixels RGB/BGR unless user wants full chroma interpolation

  2603.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2604. 

  2605.     // drop some chroma lines if the user wants it

  2606.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2607.     c->chrSrcVSubSample+= c->vChrDrop;

  2608. 

  2609.     // drop every other pixel for chroma calculation unless user wants full chroma

  2610.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2611.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2612.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2613.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE

  2614.       && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2615.         c->chrSrcHSubSample=1;

  2616. 

  2617.     if (param){

  2618.         c->param[0] = param[0];

  2619.         c->param[1] = param[1];

  2620.     }else{

  2621.         c->param[0] =

  2622.         c->param[1] = SWS_PARAM_DEFAULT;

  2623.     }

  2624. 

  2625.     c->chrIntHSubSample= c->chrDstHSubSample;

  2626.     c->chrIntVSubSample= c->chrSrcVSubSample;

  2627. 

  2628.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2629.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2630.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2631.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2632.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2633. 

  2634.     sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);

  2635. 

  2636.     /* unscaled special cases */

  2637.     if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat)))

  2638.     {

  2639.         /* yv12_to_nv12 */

  2640.         if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))

  2641.         {

  2642.             c->swScale= PlanarToNV12Wrapper;

  2643.         }

  2644.         /* yuv2bgr */

  2645.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && (isBGR(dstFormat) || isRGB(dstFormat))

  2646.             && !(flags & SWS_ACCURATE_RND) && !(dstH&1))

  2647.         {

  2648.             c->swScale= ff_yuv2rgb_get_func_ptr(c);

  2649.         }

  2650. 

  2651.         if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT))

  2652.         {

  2653.             c->swScale= yvu9toyv12Wrapper;

  2654.         }

  2655. 

  2656.         /* bgr24toYV12 */

  2657.         if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))

  2658.             c->swScale= bgr24toyv12Wrapper;

  2659. 

  2660.         /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  2661.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2662.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2663.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2664.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2665.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2666.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2667.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2668.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2669.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2670.            && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  2671.                                              && dstFormat != PIX_FMT_RGB32_1

  2672.                                              && dstFormat != PIX_FMT_BGR32_1

  2673.            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2674.              c->swScale= rgb2rgbWrapper;

  2675. 

  2676.         if ((usePal(srcFormat) && (

  2677.                  dstFormat == PIX_FMT_RGB32   ||

  2678.                  dstFormat == PIX_FMT_RGB32_1 ||

  2679.                  dstFormat == PIX_FMT_RGB24   ||

  2680.                  dstFormat == PIX_FMT_BGR32   ||

  2681.                  dstFormat == PIX_FMT_BGR32_1 ||

  2682.                  dstFormat == PIX_FMT_BGR24)))

  2683.              c->swScale= pal2rgbWrapper;

  2684. 

  2685.         if (srcFormat == PIX_FMT_YUV422P)

  2686.         {

  2687.             if (dstFormat == PIX_FMT_YUYV422)

  2688.                 c->swScale= YUV422PToYuy2Wrapper;

  2689.             else if (dstFormat == PIX_FMT_UYVY422)

  2690.                 c->swScale= YUV422PToUyvyWrapper;

  2691.         }

  2692. 

  2693.         /* LQ converters if -sws 0 or -sws 4*/

  2694.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){

  2695.             /* yv12_to_yuy2 */

  2696.             if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P)

  2697.             {

  2698.                 if (dstFormat == PIX_FMT_YUYV422)

  2699.                     c->swScale= PlanarToYuy2Wrapper;

  2700.                 else if (dstFormat == PIX_FMT_UYVY422)

  2701.                     c->swScale= PlanarToUyvyWrapper;

  2702.             }

  2703.         }

  2704.         if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  2705.             c->swScale= YUYV2YUV420Wrapper;

  2706.         if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  2707.             c->swScale= UYVY2YUV420Wrapper;

  2708.         if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)

  2709.             c->swScale= YUYV2YUV422Wrapper;

  2710.         if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)

  2711.             c->swScale= UYVY2YUV422Wrapper;

  2712. 

  2713. #ifdef COMPILE_ALTIVEC

  2714.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2715.             !(c->flags & SWS_BITEXACT) &&

  2716.             srcFormat == PIX_FMT_YUV420P) {

  2717.           // unscaled YV12 -> packed YUV, we want speed

  2718.           if (dstFormat == PIX_FMT_YUYV422)

  2719.               c->swScale= yv12toyuy2_unscaled_altivec;

  2720.           else if (dstFormat == PIX_FMT_UYVY422)

  2721.               c->swScale= yv12touyvy_unscaled_altivec;

  2722.         }

  2723. #endif

  2724. 

  2725.         /* simple copy */

  2726.         if (  srcFormat == dstFormat

  2727.             || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)

  2728.             || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)

  2729.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2730.             || (isPlanarYUV(dstFormat) && isGray(srcFormat))

  2731.             || (isGray(dstFormat) && isGray(srcFormat))

  2732.             || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)

  2733.                 && c->chrDstHSubSample == c->chrSrcHSubSample

  2734.                 && c->chrDstVSubSample == c->chrSrcVSubSample))

  2735.         {

  2736.             if (isPacked(c->srcFormat))

  2737.                 c->swScale= packedCopy;

  2738.             else /* Planar YUV or gray */

  2739.                 c->swScale= planarCopy;

  2740.         }

  2741. #if ARCH_BFIN

  2742.         if (flags & SWS_CPU_CAPS_BFIN)

  2743.             ff_bfin_get_unscaled_swscale (c);

  2744. #endif

  2745. 

  2746.         if (c->swScale){

  2747.             if (flags&SWS_PRINT_INFO)

  2748.                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",

  2749.                                 sws_format_name(srcFormat), sws_format_name(dstFormat));

  2750.             return c;

  2751.         }

  2752.     }

  2753. 

  2754.     if (flags & SWS_CPU_CAPS_MMX2)

  2755.     {

  2756.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2757.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))

  2758.         {

  2759.             if (flags&SWS_PRINT_INFO)

  2760.                 av_log(c, AV_LOG_INFO, "output width is not a multiple of 32 -> no MMX2 scaler\n");

  2761.         }

  2762.         if (usesHFilter) c->canMMX2BeUsed=0;

  2763.     }

  2764.     else

  2765.         c->canMMX2BeUsed=0;

  2766. 

  2767.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2768.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2769. 

  2770.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2771.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2772.     // n-2 is the last chrominance sample available

  2773.     // this is not perfect, but no one should notice the difference, the more correct variant

  2774.     // would be like the vertical one, but that would require some special code for the

  2775.     // first and last pixel

  2776.     if (flags&SWS_FAST_BILINEAR)

  2777.     {

  2778.         if (c->canMMX2BeUsed)

  2779.         {

  2780.             c->lumXInc+= 20;

  2781.             c->chrXInc+= 20;

  2782.         }

  2783.         //we don't use the x86 asm scaler if MMX is available

  2784.         else if (flags & SWS_CPU_CAPS_MMX)

  2785.         {

  2786.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2787.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2788.         }

  2789.     }

  2790. 

  2791.     /* precalculate horizontal scaler filter coefficients */

  2792.     {

  2793.         const int filterAlign=

  2794.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2795.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2796.             1;

  2797. 

  2798.         initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2799.                    srcW      ,       dstW, filterAlign, 1<<14,

  2800.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2801.                    srcFilter->lumH, dstFilter->lumH, c->param);

  2802.         initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2803.                    c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2804.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2805.                    srcFilter->chrH, dstFilter->chrH, c->param);

  2806. 

  2807. #define MAX_FUNNY_CODE_SIZE 10000

  2808. #if defined(COMPILE_MMX2)

  2809. // can't downscale !!!

  2810.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))

  2811.         {

  2812. #ifdef MAP_ANONYMOUS

  2813.             c->funnyYCode  = mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2814.             c->funnyUVCode = mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2815. #elif HAVE_VIRTUALALLOC

  2816.             c->funnyYCode  = VirtualAlloc(NULL, MAX_FUNNY_CODE_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2817.             c->funnyUVCode = VirtualAlloc(NULL, MAX_FUNNY_CODE_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2818. #else

  2819.             c->funnyYCode  = av_malloc(MAX_FUNNY_CODE_SIZE);

  2820.             c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2821. #endif

  2822. 

  2823.             c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));

  2824.             c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));

  2825.             c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));

  2826.             c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));

  2827. 

  2828.             initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2829.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2830.         }

  2831. #endif /* defined(COMPILE_MMX2) */

  2832.     } // initialize horizontal stuff

  2833. 

  2834. 

  2835. 

  2836.     /* precalculate vertical scaler filter coefficients */

  2837.     {

  2838.         const int filterAlign=

  2839.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2840.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2841.             1;

  2842. 

  2843.         initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2844.                    srcH      ,        dstH, filterAlign, (1<<12),

  2845.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2846.                    srcFilter->lumV, dstFilter->lumV, c->param);

  2847.         initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2848.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12),

  2849.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2850.                    srcFilter->chrV, dstFilter->chrV, c->param);

  2851. 

  2852. #if HAVE_ALTIVEC

  2853.         c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);

  2854.         c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);

  2855. 

  2856.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2857.             int j;

  2858.             short *p = (short *)&c->vYCoeffsBank[i];

  2859.             for (j=0;j<8;j++)

  2860.                 p[j] = c->vLumFilter[i];

  2861.         }

  2862. 

  2863.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2864.             int j;

  2865.             short *p = (short *)&c->vCCoeffsBank[i];

  2866.             for (j=0;j<8;j++)

  2867.                 p[j] = c->vChrFilter[i];

  2868.         }

  2869. #endif

  2870.     }

  2871. 

  2872.     // calculate buffer sizes so that they won't run out while handling these damn slices

  2873.     c->vLumBufSize= c->vLumFilterSize;

  2874.     c->vChrBufSize= c->vChrFilterSize;

  2875.     for (i=0; i<dstH; i++)

  2876.     {

  2877.         int chrI= i*c->chrDstH / dstH;

  2878.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2879.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2880. 

  2881.         nextSlice>>= c->chrSrcVSubSample;

  2882.         nextSlice<<= c->chrSrcVSubSample;

  2883.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2884.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];

  2885.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2886.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2887.     }

  2888. 

  2889.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2890.     c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2891.     c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));

  2892.     if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat))

  2893.         c->alpPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2894.     //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)

  2895.     /* align at 16 bytes for AltiVec */

  2896.     for (i=0; i<c->vLumBufSize; i++)

  2897.         c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2898.     for (i=0; i<c->vChrBufSize; i++)

  2899.         c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);

  2900.     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf)

  2901.         for (i=0; i<c->vLumBufSize; i++)

  2902.             c->alpPixBuf[i]= c->alpPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2903. 

  2904.     //try to avoid drawing green stuff between the right end and the stride end

  2905.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);

  2906. 

  2907.     assert(2*VOFW == VOF);

  2908. 

  2909.     assert(c->chrDstH <= dstH);

  2910. 

  2911.     if (flags&SWS_PRINT_INFO)

  2912.     {

  2913. #ifdef DITHER1XBPP

  2914.         const char *dither= " dithered";

  2915. #else

  2916.         const char *dither= "";

  2917. #endif

  2918.         if (flags&SWS_FAST_BILINEAR)

  2919.             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");

  2920.         else if (flags&SWS_BILINEAR)

  2921.             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");

  2922.         else if (flags&SWS_BICUBIC)

  2923.             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");

  2924.         else if (flags&SWS_X)

  2925.             av_log(c, AV_LOG_INFO, "Experimental scaler, ");

  2926.         else if (flags&SWS_POINT)

  2927.             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");

  2928.         else if (flags&SWS_AREA)

  2929.             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");

  2930.         else if (flags&SWS_BICUBLIN)

  2931.             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");

  2932.         else if (flags&SWS_GAUSS)

  2933.             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");

  2934.         else if (flags&SWS_SINC)

  2935.             av_log(c, AV_LOG_INFO, "Sinc scaler, ");

  2936.         else if (flags&SWS_LANCZOS)

  2937.             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");

  2938.         else if (flags&SWS_SPLINE)

  2939.             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");

  2940.         else

  2941.             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");

  2942. 

  2943.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2944.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  2945.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2946.         else

  2947.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  2948.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  2949. 

  2950.         if (flags & SWS_CPU_CAPS_MMX2)

  2951.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  2952.         else if (flags & SWS_CPU_CAPS_3DNOW)

  2953.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  2954.         else if (flags & SWS_CPU_CAPS_MMX)

  2955.             av_log(c, AV_LOG_INFO, "using MMX\n");

  2956.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  2957.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  2958.         else

  2959.             av_log(c, AV_LOG_INFO, "using C\n");

  2960.     }

  2961. 

  2962.     if (flags & SWS_PRINT_INFO)

  2963.     {

  2964.         if (flags & SWS_CPU_CAPS_MMX)

  2965.         {

  2966.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2967.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  2968.             else

  2969.             {

  2970.                 if (c->hLumFilterSize==4)

  2971.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");

  2972.                 else if (c->hLumFilterSize==8)

  2973.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");

  2974.                 else

  2975.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");

  2976. 

  2977.                 if (c->hChrFilterSize==4)

  2978.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");

  2979.                 else if (c->hChrFilterSize==8)

  2980.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");

  2981.                 else

  2982.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");

  2983.             }

  2984.         }

  2985.         else

  2986.         {

  2987. #if ARCH_X86

  2988.             av_log(c, AV_LOG_VERBOSE, "using x86 asm scaler for horizontal scaling\n");

  2989. #else

  2990.             if (flags & SWS_FAST_BILINEAR)

  2991.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");

  2992.             else

  2993.                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");

  2994. #endif

  2995.         }

  2996.         if (isPlanarYUV(dstFormat))

  2997.         {

  2998.             if (c->vLumFilterSize==1)

  2999.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3000.             else

  3001.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3002.         }

  3003.         else

  3004.         {

  3005.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  3006.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  3007.                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3008.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  3009.                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3010.             else

  3011.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3012.         }

  3013. 

  3014.         if (dstFormat==PIX_FMT_BGR24)

  3015.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 converter\n",

  3016.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  3017.         else if (dstFormat==PIX_FMT_RGB32)

  3018.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3019.         else if (dstFormat==PIX_FMT_BGR565)

  3020.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3021.         else if (dstFormat==PIX_FMT_BGR555)

  3022.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3023. 

  3024.         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  3025.     }

  3026.     if (flags & SWS_PRINT_INFO)

  3027.     {

  3028.         av_log(c, AV_LOG_DEBUG, "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  3029.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  3030.         av_log(c, AV_LOG_DEBUG, "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  3031.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  3032.     }

  3033. 

  3034.     c->swScale= getSwsFunc(c);

  3035.     return c;

  3036. }

  3037. 

  3038. static void reset_ptr(uint8_t* src[], int format){

  3039.     if(!isALPHA(format))

  3040.         src[3]=NULL;

  3041.     if(!isPlanarYUV(format)){

  3042.         src[3]=src[2]=NULL;

  3043.         if(   format != PIX_FMT_PAL8

  3044.            && format != PIX_FMT_RGB8

  3045.            && format != PIX_FMT_BGR8

  3046.            && format != PIX_FMT_RGB4_BYTE

  3047.            && format != PIX_FMT_BGR4_BYTE

  3048.           )

  3049.             src[1]= NULL;

  3050.     }

  3051. }

  3052. 

  3053. /**

  3054.  * swscale wrapper, so we don't need to export the SwsContext.

  3055.  * Assumes planar YUV to be in YUV order instead of YVU.

  3056.  */

  3057. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  3058.               int srcSliceH, uint8_t* dst[], int dstStride[]){

  3059.     int i;

  3060.     uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};

  3061.     uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};

  3062. 

  3063.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  3064.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  3065.         return 0;

  3066.     }

  3067.     if (c->sliceDir == 0) {

  3068.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  3069.     }

  3070. 

  3071.     if (usePal(c->srcFormat)){

  3072.         for (i=0; i<256; i++){

  3073.             int p, r, g, b,y,u,v;

  3074.             if(c->srcFormat == PIX_FMT_PAL8){

  3075.                 p=((uint32_t*)(src[1]))[i];

  3076.                 r= (p>>16)&0xFF;

  3077.                 g= (p>> 8)&0xFF;

  3078.                 b=  p     &0xFF;

  3079.             }else if(c->srcFormat == PIX_FMT_RGB8){

  3080.                 r= (i>>5    )*36;

  3081.                 g= ((i>>2)&7)*36;

  3082.                 b= (i&3     )*85;

  3083.             }else if(c->srcFormat == PIX_FMT_BGR8){

  3084.                 b= (i>>6    )*85;

  3085.                 g= ((i>>3)&7)*36;

  3086.                 r= (i&7     )*36;

  3087.             }else if(c->srcFormat == PIX_FMT_RGB4_BYTE){

  3088.                 r= (i>>3    )*255;

  3089.                 g= ((i>>1)&3)*85;

  3090.                 b= (i&1     )*255;

  3091.             }else {

  3092.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  3093.                 b= (i>>3    )*255;

  3094.                 g= ((i>>1)&3)*85;

  3095.                 r= (i&1     )*255;

  3096.             }

  3097.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3098.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3099.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3100.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  3101. 

  3102. 

  3103.             switch(c->dstFormat) {

  3104.             case PIX_FMT_BGR32:

  3105. #ifndef WORDS_BIGENDIAN

  3106.             case PIX_FMT_RGB24:

  3107. #endif

  3108.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  3109.                 break;

  3110.             case PIX_FMT_BGR32_1:

  3111. #ifdef  WORDS_BIGENDIAN

  3112.             case PIX_FMT_BGR24:

  3113. #endif

  3114.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  3115.                 break;

  3116.             case PIX_FMT_RGB32_1:

  3117. #ifdef  WORDS_BIGENDIAN

  3118.             case PIX_FMT_RGB24:

  3119. #endif

  3120.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  3121.                 break;

  3122.             case PIX_FMT_RGB32:

  3123. #ifndef WORDS_BIGENDIAN

  3124.             case PIX_FMT_BGR24:

  3125. #endif

  3126.             default:

  3127.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  3128.             }

  3129.         }

  3130.     }

  3131. 

  3132.     // copy strides, so they can safely be modified

  3133.     if (c->sliceDir == 1) {

  3134.         // slices go from top to bottom

  3135.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};

  3136.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};

  3137. 

  3138.         reset_ptr(src2, c->srcFormat);

  3139.         reset_ptr(dst2, c->dstFormat);

  3140. 

  3141.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);

  3142.     } else {

  3143.         // slices go from bottom to top => we flip the image internally

  3144.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};

  3145.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};

  3146. 

  3147.         src2[0] += (srcSliceH-1)*srcStride[0];

  3148.         if (!usePal(c->srcFormat))

  3149.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  3150.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  3151.         src2[3] += (srcSliceH-1)*srcStride[3];

  3152.         dst2[0] += ( c->dstH                      -1)*dstStride[0];

  3153.         dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];

  3154.         dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];

  3155.         dst2[3] += ( c->dstH                      -1)*dstStride[3];

  3156. 

  3157.         reset_ptr(src2, c->srcFormat);

  3158.         reset_ptr(dst2, c->dstFormat);

  3159. 

  3160.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  3161.     }

  3162. }

  3163. 

  3164. #if LIBSWSCALE_VERSION_MAJOR < 1

  3165. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  3166.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  3167.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  3168. }

  3169. #endif

  3170. 

  3171. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  3172.                                 float lumaSharpen, float chromaSharpen,

  3173.                                 float chromaHShift, float chromaVShift,

  3174.                                 int verbose)

  3175. {

  3176.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  3177. 

  3178.     if (lumaGBlur!=0.0){

  3179.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  3180.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  3181.     }else{

  3182.         filter->lumH= sws_getIdentityVec();

  3183.         filter->lumV= sws_getIdentityVec();

  3184.     }

  3185. 

  3186.     if (chromaGBlur!=0.0){

  3187.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  3188.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  3189.     }else{

  3190.         filter->chrH= sws_getIdentityVec();

  3191.         filter->chrV= sws_getIdentityVec();

  3192.     }

  3193. 

  3194.     if (chromaSharpen!=0.0){

  3195.         SwsVector *id= sws_getIdentityVec();

  3196.         sws_scaleVec(filter->chrH, -chromaSharpen);

  3197.         sws_scaleVec(filter->chrV, -chromaSharpen);

  3198.         sws_addVec(filter->chrH, id);

  3199.         sws_addVec(filter->chrV, id);

  3200.         sws_freeVec(id);

  3201.     }

  3202. 

  3203.     if (lumaSharpen!=0.0){

  3204.         SwsVector *id= sws_getIdentityVec();

  3205.         sws_scaleVec(filter->lumH, -lumaSharpen);

  3206.         sws_scaleVec(filter->lumV, -lumaSharpen);

  3207.         sws_addVec(filter->lumH, id);

  3208.         sws_addVec(filter->lumV, id);

  3209.         sws_freeVec(id);

  3210.     }

  3211. 

  3212.     if (chromaHShift != 0.0)

  3213.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  3214. 

  3215.     if (chromaVShift != 0.0)

  3216.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  3217. 

  3218.     sws_normalizeVec(filter->chrH, 1.0);

  3219.     sws_normalizeVec(filter->chrV, 1.0);

  3220.     sws_normalizeVec(filter->lumH, 1.0);

  3221.     sws_normalizeVec(filter->lumV, 1.0);

  3222. 

  3223.     if (verbose) sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);

  3224.     if (verbose) sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);

  3225. 

  3226.     return filter;

  3227. }

  3228. 

  3229. SwsVector *sws_getGaussianVec(double variance, double quality){

  3230.     const int length= (int)(variance*quality + 0.5) | 1;

  3231.     int i;

  3232.     double *coeff= av_malloc(length*sizeof(double));

  3233.     double middle= (length-1)*0.5;

  3234.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3235. 

  3236.     vec->coeff= coeff;

  3237.     vec->length= length;

  3238. 

  3239.     for (i=0; i<length; i++)

  3240.     {

  3241.         double dist= i-middle;

  3242.         coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);

  3243.     }

  3244. 

  3245.     sws_normalizeVec(vec, 1.0);

  3246. 

  3247.     return vec;

  3248. }

  3249. 

  3250. SwsVector *sws_getConstVec(double c, int length){

  3251.     int i;

  3252.     double *coeff= av_malloc(length*sizeof(double));

  3253.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3254. 

  3255.     vec->coeff= coeff;

  3256.     vec->length= length;

  3257. 

  3258.     for (i=0; i<length; i++)

  3259.         coeff[i]= c;

  3260. 

  3261.     return vec;

  3262. }

  3263. 

  3264. 

  3265. SwsVector *sws_getIdentityVec(void){

  3266.     return sws_getConstVec(1.0, 1);

  3267. }

  3268. 

  3269. double sws_dcVec(SwsVector *a){

  3270.     int i;

  3271.     double sum=0;

  3272. 

  3273.     for (i=0; i<a->length; i++)

  3274.         sum+= a->coeff[i];

  3275. 

  3276.     return sum;

  3277. }

  3278. 

  3279. void sws_scaleVec(SwsVector *a, double scalar){

  3280.     int i;

  3281. 

  3282.     for (i=0; i<a->length; i++)

  3283.         a->coeff[i]*= scalar;

  3284. }

  3285. 

  3286. void sws_normalizeVec(SwsVector *a, double height){

  3287.     sws_scaleVec(a, height/sws_dcVec(a));

  3288. }

  3289. 

  3290. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){

  3291.     int length= a->length + b->length - 1;

  3292.     double *coeff= av_malloc(length*sizeof(double));

  3293.     int i, j;

  3294.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3295. 

  3296.     vec->coeff= coeff;

  3297.     vec->length= length;

  3298. 

  3299.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3300. 

  3301.     for (i=0; i<a->length; i++)

  3302.     {

  3303.         for (j=0; j<b->length; j++)

  3304.         {

  3305.             coeff[i+j]+= a->coeff[i]*b->coeff[j];

  3306.         }

  3307.     }

  3308. 

  3309.     return vec;

  3310. }

  3311. 

  3312. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){

  3313.     int length= FFMAX(a->length, b->length);

  3314.     double *coeff= av_malloc(length*sizeof(double));

  3315.     int i;

  3316.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3317. 

  3318.     vec->coeff= coeff;

  3319.     vec->length= length;

  3320. 

  3321.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3322. 

  3323.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3324.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  3325. 

  3326.     return vec;

  3327. }

  3328. 

  3329. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){

  3330.     int length= FFMAX(a->length, b->length);

  3331.     double *coeff= av_malloc(length*sizeof(double));

  3332.     int i;

  3333.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3334. 

  3335.     vec->coeff= coeff;

  3336.     vec->length= length;

  3337. 

  3338.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3339. 

  3340.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3341.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  3342. 

  3343.     return vec;

  3344. }

  3345. 

  3346. /* shift left / or right if "shift" is negative */

  3347. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){

  3348.     int length= a->length + FFABS(shift)*2;

  3349.     double *coeff= av_malloc(length*sizeof(double));

  3350.     int i;

  3351.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3352. 

  3353.     vec->coeff= coeff;

  3354.     vec->length= length;

  3355. 

  3356.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3357. 

  3358.     for (i=0; i<a->length; i++)

  3359.     {

  3360.         coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  3361.     }

  3362. 

  3363.     return vec;

  3364. }

  3365. 

  3366. void sws_shiftVec(SwsVector *a, int shift){

  3367.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  3368.     av_free(a->coeff);

  3369.     a->coeff= shifted->coeff;

  3370.     a->length= shifted->length;

  3371.     av_free(shifted);

  3372. }

  3373. 

  3374. void sws_addVec(SwsVector *a, SwsVector *b){

  3375.     SwsVector *sum= sws_sumVec(a, b);

  3376.     av_free(a->coeff);

  3377.     a->coeff= sum->coeff;

  3378.     a->length= sum->length;

  3379.     av_free(sum);

  3380. }

  3381. 

  3382. void sws_subVec(SwsVector *a, SwsVector *b){

  3383.     SwsVector *diff= sws_diffVec(a, b);

  3384.     av_free(a->coeff);

  3385.     a->coeff= diff->coeff;

  3386.     a->length= diff->length;

  3387.     av_free(diff);

  3388. }

  3389. 

  3390. void sws_convVec(SwsVector *a, SwsVector *b){

  3391.     SwsVector *conv= sws_getConvVec(a, b);

  3392.     av_free(a->coeff);

  3393.     a->coeff= conv->coeff;

  3394.     a->length= conv->length;

  3395.     av_free(conv);

  3396. }

  3397. 

  3398. SwsVector *sws_cloneVec(SwsVector *a){

  3399.     double *coeff= av_malloc(a->length*sizeof(double));

  3400.     int i;

  3401.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3402. 

  3403.     vec->coeff= coeff;

  3404.     vec->length= a->length;

  3405. 

  3406.     for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];

  3407. 

  3408.     return vec;

  3409. }

  3410. 

  3411. void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level){

  3412.     int i;

  3413.     double max=0;

  3414.     double min=0;

  3415.     double range;

  3416. 

  3417.     for (i=0; i<a->length; i++)

  3418.         if (a->coeff[i]>max) max= a->coeff[i];

  3419. 

  3420.     for (i=0; i<a->length; i++)

  3421.         if (a->coeff[i]<min) min= a->coeff[i];

  3422. 

  3423.     range= max - min;

  3424. 

  3425.     for (i=0; i<a->length; i++)

  3426.     {

  3427.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  3428.         av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);

  3429.         for (;x>0; x--) av_log(log_ctx, log_level, " ");

  3430.         av_log(log_ctx, log_level, "|\n");

  3431.     }

  3432. }

  3433. 

  3434. #if LIBSWSCALE_VERSION_MAJOR < 1

  3435. void sws_printVec(SwsVector *a){

  3436.     sws_printVec2(a, NULL, AV_LOG_DEBUG);

  3437. }

  3438. #endif

  3439. 

  3440. void sws_freeVec(SwsVector *a){

  3441.     if (!a) return;

  3442.     av_freep(&a->coeff);

  3443.     a->length=0;

  3444.     av_free(a);

  3445. }

  3446. 

  3447. void sws_freeFilter(SwsFilter *filter){

  3448.     if (!filter) return;

  3449. 

  3450.     if (filter->lumH) sws_freeVec(filter->lumH);

  3451.     if (filter->lumV) sws_freeVec(filter->lumV);

  3452.     if (filter->chrH) sws_freeVec(filter->chrH);

  3453.     if (filter->chrV) sws_freeVec(filter->chrV);

  3454.     av_free(filter);

  3455. }

  3456. 

  3457. 

  3458. void sws_freeContext(SwsContext *c){

  3459.     int i;

  3460.     if (!c) return;

  3461. 

  3462.     if (c->lumPixBuf)

  3463.     {

  3464.         for (i=0; i<c->vLumBufSize; i++)

  3465.             av_freep(&c->lumPixBuf[i]);

  3466.         av_freep(&c->lumPixBuf);

  3467.     }

  3468. 

  3469.     if (c->chrPixBuf)

  3470.     {

  3471.         for (i=0; i<c->vChrBufSize; i++)

  3472.             av_freep(&c->chrPixBuf[i]);

  3473.         av_freep(&c->chrPixBuf);

  3474.     }

  3475. 

  3476.     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf){

  3477.         for (i=0; i<c->vLumBufSize; i++)

  3478.             av_freep(&c->alpPixBuf[i]);

  3479.         av_freep(&c->alpPixBuf);

  3480.     }

  3481. 

  3482.     av_freep(&c->vLumFilter);

  3483.     av_freep(&c->vChrFilter);

  3484.     av_freep(&c->hLumFilter);

  3485.     av_freep(&c->hChrFilter);

  3486. #if HAVE_ALTIVEC

  3487.     av_freep(&c->vYCoeffsBank);

  3488.     av_freep(&c->vCCoeffsBank);

  3489. #endif

  3490. 

  3491.     av_freep(&c->vLumFilterPos);

  3492.     av_freep(&c->vChrFilterPos);

  3493.     av_freep(&c->hLumFilterPos);

  3494.     av_freep(&c->hChrFilterPos);

  3495. 

  3496. #if ARCH_X86 && CONFIG_GPL

  3497. #ifdef MAP_ANONYMOUS

  3498.     if (c->funnyYCode ) munmap(c->funnyYCode , MAX_FUNNY_CODE_SIZE);

  3499.     if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);

  3500. #elif HAVE_VIRTUALALLOC

  3501.     if (c->funnyYCode ) VirtualFree(c->funnyYCode , MAX_FUNNY_CODE_SIZE, MEM_RELEASE);

  3502.     if (c->funnyUVCode) VirtualFree(c->funnyUVCode, MAX_FUNNY_CODE_SIZE, MEM_RELEASE);

  3503. #else

  3504.     av_free(c->funnyYCode );

  3505.     av_free(c->funnyUVCode);

  3506. #endif

  3507.     c->funnyYCode=NULL;

  3508.     c->funnyUVCode=NULL;

  3509. #endif /* ARCH_X86 && CONFIG_GPL */

  3510. 

  3511.     av_freep(&c->lumMmx2Filter);

  3512.     av_freep(&c->chrMmx2Filter);

  3513.     av_freep(&c->lumMmx2FilterPos);

  3514.     av_freep(&c->chrMmx2FilterPos);

  3515.     av_freep(&c->yuvTable);

  3516. 

  3517.     av_free(c);

  3518. }

  3519. 

  3520. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  3521.                                         int srcW, int srcH, enum PixelFormat srcFormat,

  3522.                                         int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  3523.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)

  3524. {

  3525.     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};

  3526. 

  3527.     if (!param)

  3528.         param = default_param;

  3529. 

  3530.     if (context) {

  3531.         if (context->srcW != srcW || context->srcH != srcH ||

  3532.             context->srcFormat != srcFormat ||

  3533.             context->dstW != dstW || context->dstH != dstH ||

  3534.             context->dstFormat != dstFormat || context->flags != flags ||

  3535.             context->param[0] != param[0] || context->param[1] != param[1])

  3536.         {

  3537.             sws_freeContext(context);

  3538.             context = NULL;

  3539.         }

  3540.     }

  3541.     if (!context) {

  3542.         return sws_getContext(srcW, srcH, srcFormat,

  3543.                               dstW, dstH, dstFormat, flags,

  3544.                               srcFilter, dstFilter, param);

  3545.     }

  3546.     return context;

  3547. }