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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. #include "swscale.h"

  72. #include "swscale_internal.h"

  73. #include "rgb2rgb.h"

  74. #include "libavutil/x86_cpu.h"

  75. #include "libavutil/bswap.h"

  76. 

  77. unsigned swscale_version(void)

  78. {

  79.     return LIBSWSCALE_VERSION_INT;

  80. }

  81. 

  82. #undef MOVNTQ

  83. #undef PAVGB

  84. 

  85. //#undef HAVE_MMX2

  86. //#define HAVE_AMD3DNOW

  87. //#undef HAVE_MMX

  88. //#undef ARCH_X86

  89. //#define WORDS_BIGENDIAN

  90. #define DITHER1XBPP

  91. 

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

  93. 

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

  95. 

  96. #ifdef M_PI

  97. #define PI M_PI

  98. #else

  99. #define PI 3.14159265358979323846

  100. #endif

  101. 

  102. #define isSupportedIn(x)    (       \

  103.            (x)==PIX_FMT_YUV420P     \

  104.         || (x)==PIX_FMT_YUVA420P    \

  105.         || (x)==PIX_FMT_YUYV422     \

  106.         || (x)==PIX_FMT_UYVY422     \

  107.         || (x)==PIX_FMT_RGB32       \

  108.         || (x)==PIX_FMT_RGB32_1     \

  109.         || (x)==PIX_FMT_BGR24       \

  110.         || (x)==PIX_FMT_BGR565      \

  111.         || (x)==PIX_FMT_BGR555      \

  112.         || (x)==PIX_FMT_BGR32       \

  113.         || (x)==PIX_FMT_BGR32_1     \

  114.         || (x)==PIX_FMT_RGB24       \

  115.         || (x)==PIX_FMT_RGB565      \

  116.         || (x)==PIX_FMT_RGB555      \

  117.         || (x)==PIX_FMT_GRAY8       \

  118.         || (x)==PIX_FMT_YUV410P     \

  119.         || (x)==PIX_FMT_YUV440P     \

  120.         || (x)==PIX_FMT_GRAY16BE    \

  121.         || (x)==PIX_FMT_GRAY16LE    \

  122.         || (x)==PIX_FMT_YUV444P     \

  123.         || (x)==PIX_FMT_YUV422P     \

  124.         || (x)==PIX_FMT_YUV411P     \

  125.         || (x)==PIX_FMT_PAL8        \

  126.         || (x)==PIX_FMT_BGR8        \

  127.         || (x)==PIX_FMT_RGB8        \

  128.         || (x)==PIX_FMT_BGR4_BYTE   \

  129.         || (x)==PIX_FMT_RGB4_BYTE   \

  130.         || (x)==PIX_FMT_YUV440P     \

  131.         || (x)==PIX_FMT_MONOWHITE   \

  132.         || (x)==PIX_FMT_MONOBLACK   \

  133.     )

  134. #define isSupportedOut(x)   (       \

  135.            (x)==PIX_FMT_YUV420P     \

  136.         || (x)==PIX_FMT_YUYV422     \

  137.         || (x)==PIX_FMT_UYVY422     \

  138.         || (x)==PIX_FMT_YUV444P     \

  139.         || (x)==PIX_FMT_YUV422P     \

  140.         || (x)==PIX_FMT_YUV411P     \

  141.         || isRGB(x)                 \

  142.         || isBGR(x)                 \

  143.         || (x)==PIX_FMT_NV12        \

  144.         || (x)==PIX_FMT_NV21        \

  145.         || (x)==PIX_FMT_GRAY16BE    \

  146.         || (x)==PIX_FMT_GRAY16LE    \

  147.         || (x)==PIX_FMT_GRAY8       \

  148.         || (x)==PIX_FMT_YUV410P     \

  149.         || (x)==PIX_FMT_YUV440P     \

  150.     )

  151. #define isPacked(x)         (       \

  152.            (x)==PIX_FMT_PAL8        \

  153.         || (x)==PIX_FMT_YUYV422     \

  154.         || (x)==PIX_FMT_UYVY422     \

  155.         || isRGB(x)                 \

  156.         || isBGR(x)                 \

  157.     )

  158. #define usePal(x)           (       \

  159.            (x)==PIX_FMT_PAL8        \

  160.         || (x)==PIX_FMT_BGR4_BYTE   \

  161.         || (x)==PIX_FMT_RGB4_BYTE   \

  162.         || (x)==PIX_FMT_BGR8        \

  163.         || (x)==PIX_FMT_RGB8        \

  164.     )

  165. 

  166. #define RGB2YUV_SHIFT 15

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

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

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

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

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

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

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

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

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

  176. 

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

  178. 

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

  180.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  181.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  182.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  183.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  184.     {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC

  185.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  186.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //SMPTE 170M

  187.     {0.701 , 0.087 , 0.212 , -0.384, 0.5  -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M

  188. };

  189. 

  190. /*

  191. NOTES

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

  193. 

  194. TODO

  195. more intelligent misalignment avoidance for the horizontal scaler

  196. write special vertical cubic upscale version

  197. optimize C code (YV12 / minmax)

  198. add support for packed pixel YUV input & output

  199. add support for Y8 output

  200. optimize BGR24 & BGR32

  201. add BGR4 output support

  202. write special BGR->BGR scaler

  203. */

  204. 

  205. #if ARCH_X86 && CONFIG_GPL

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

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

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

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

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

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

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

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

  214. 

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

  216.         0x0103010301030103LL,

  217.         0x0200020002000200LL,};

  218. 

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

  220.         0x0602060206020602LL,

  221.         0x0004000400040004LL,};

  222. 

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

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

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

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

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

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

  229. 

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

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

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

  233. 

  234. #ifdef FAST_BGR2YV12

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

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

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

  238. #else

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

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

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

  242. #endif /* FAST_BGR2YV12 */

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

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

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

  246. 

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

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

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

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

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

  252. 

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

  254.     {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},

  255.     {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},

  256. };

  257. 

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

  259. 

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

  261. 

  262. // clipping helper table for C implementations:

  263. static unsigned char clip_table[768];

  264. 

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

  266. 

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

  268. {  1,   3,   1,   3,   1,   3,   1,   3, },

  269. {  2,   0,   2,   0,   2,   0,   2,   0, },

  270. };

  271. 

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

  273. {  6,   2,   6,   2,   6,   2,   6,   2, },

  274. {  0,   4,   0,   4,   0,   4,   0,   4, },

  275. };

  276. 

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

  278. { 17,   9,  23,  15,  16,   8,  22,  14, },

  279. {  5,  29,   3,  27,   4,  28,   2,  26, },

  280. { 21,  13,  19,  11,  20,  12,  18,  10, },

  281. {  0,  24,   6,  30,   1,  25,   7,  31, },

  282. { 16,   8,  22,  14,  17,   9,  23,  15, },

  283. {  4,  28,   2,  26,   5,  29,   3,  27, },

  284. { 20,  12,  18,  10,  21,  13,  19,  11, },

  285. {  1,  25,   7,  31,   0,  24,   6,  30, },

  286. };

  287. 

  288. #if 0

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

  290. {  0,  48,  12,  60,   3,  51,  15,  63, },

  291. { 32,  16,  44,  28,  35,  19,  47,  31, },

  292. {  8,  56,   4,  52,  11,  59,   7,  55, },

  293. { 40,  24,  36,  20,  43,  27,  39,  23, },

  294. {  2,  50,  14,  62,   1,  49,  13,  61, },

  295. { 34,  18,  46,  30,  33,  17,  45,  29, },

  296. { 10,  58,   6,  54,   9,  57,   5,  53, },

  297. { 42,  26,  38,  22,  41,  25,  37,  21, },

  298. };

  299. #endif

  300. 

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

  302. {  0,  55,  14,  68,   3,  58,  17,  72, },

  303. { 37,  18,  50,  32,  40,  22,  54,  35, },

  304. {  9,  64,   5,  59,  13,  67,   8,  63, },

  305. { 46,  27,  41,  23,  49,  31,  44,  26, },

  306. {  2,  57,  16,  71,   1,  56,  15,  70, },

  307. { 39,  21,  52,  34,  38,  19,  51,  33, },

  308. { 11,  66,   7,  62,  10,  65,   6,  60, },

  309. { 48,  30,  43,  25,  47,  29,  42,  24, },

  310. };

  311. 

  312. #if 0

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

  314. { 68,  36,  92,  60,  66,  34,  90,  58, },

  315. { 20, 116,  12, 108,  18, 114,  10, 106, },

  316. { 84,  52,  76,  44,  82,  50,  74,  42, },

  317. {  0,  96,  24, 120,   6, 102,  30, 126, },

  318. { 64,  32,  88,  56,  70,  38,  94,  62, },

  319. { 16, 112,   8, 104,  22, 118,  14, 110, },

  320. { 80,  48,  72,  40,  86,  54,  78,  46, },

  321. {  4, 100,  28, 124,   2,  98,  26, 122, },

  322. };

  323. #endif

  324. 

  325. #if 1

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

  327. {117,  62, 158, 103, 113,  58, 155, 100, },

  328. { 34, 199,  21, 186,  31, 196,  17, 182, },

  329. {144,  89, 131,  76, 141,  86, 127,  72, },

  330. {  0, 165,  41, 206,  10, 175,  52, 217, },

  331. {110,  55, 151,  96, 120,  65, 162, 107, },

  332. { 28, 193,  14, 179,  38, 203,  24, 189, },

  333. {138,  83, 124,  69, 148,  93, 134,  79, },

  334. {  7, 172,  48, 213,   3, 168,  45, 210, },

  335. };

  336. #elif 1

  337. // tries to correct a gamma of 1.5

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

  339. {  0, 143,  18, 200,   2, 156,  25, 215, },

  340. { 78,  28, 125,  64,  89,  36, 138,  74, },

  341. { 10, 180,   3, 161,  16, 195,   8, 175, },

  342. {109,  51,  93,  38, 121,  60, 105,  47, },

  343. {  1, 152,  23, 210,   0, 147,  20, 205, },

  344. { 85,  33, 134,  71,  81,  30, 130,  67, },

  345. { 14, 190,   6, 171,  12, 185,   5, 166, },

  346. {117,  57, 101,  44, 113,  54,  97,  41, },

  347. };

  348. #elif 1

  349. // tries to correct a gamma of 2.0

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

  351. {  0, 124,   8, 193,   0, 140,  12, 213, },

  352. { 55,  14, 104,  42,  66,  19, 119,  52, },

  353. {  3, 168,   1, 145,   6, 187,   3, 162, },

  354. { 86,  31,  70,  21,  99,  39,  82,  28, },

  355. {  0, 134,  11, 206,   0, 129,   9, 200, },

  356. { 62,  17, 114,  48,  58,  16, 109,  45, },

  357. {  5, 181,   2, 157,   4, 175,   1, 151, },

  358. { 95,  36,  78,  26,  90,  34,  74,  24, },

  359. };

  360. #else

  361. // tries to correct a gamma of 2.5

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

  363. {  0, 107,   3, 187,   0, 125,   6, 212, },

  364. { 39,   7,  86,  28,  49,  11, 102,  36, },

  365. {  1, 158,   0, 131,   3, 180,   1, 151, },

  366. { 68,  19,  52,  12,  81,  25,  64,  17, },

  367. {  0, 119,   5, 203,   0, 113,   4, 195, },

  368. { 45,   9,  96,  33,  42,   8,  91,  30, },

  369. {  2, 172,   1, 144,   2, 165,   0, 137, },

  370. { 77,  23,  60,  15,  72,  21,  56,  14, },

  371. };

  372. #endif

  373. 

  374. const char *sws_format_name(enum PixelFormat format)

  375. {

  376.     switch (format) {

  377.         case PIX_FMT_YUV420P:

  378.             return "yuv420p";

  379.         case PIX_FMT_YUVA420P:

  380.             return "yuva420p";

  381.         case PIX_FMT_YUYV422:

  382.             return "yuyv422";

  383.         case PIX_FMT_RGB24:

  384.             return "rgb24";

  385.         case PIX_FMT_BGR24:

  386.             return "bgr24";

  387.         case PIX_FMT_YUV422P:

  388.             return "yuv422p";

  389.         case PIX_FMT_YUV444P:

  390.             return "yuv444p";

  391.         case PIX_FMT_RGB32:

  392.             return "rgb32";

  393.         case PIX_FMT_YUV410P:

  394.             return "yuv410p";

  395.         case PIX_FMT_YUV411P:

  396.             return "yuv411p";

  397.         case PIX_FMT_RGB565:

  398.             return "rgb565";

  399.         case PIX_FMT_RGB555:

  400.             return "rgb555";

  401.         case PIX_FMT_GRAY16BE:

  402.             return "gray16be";

  403.         case PIX_FMT_GRAY16LE:

  404.             return "gray16le";

  405.         case PIX_FMT_GRAY8:

  406.             return "gray8";

  407.         case PIX_FMT_MONOWHITE:

  408.             return "mono white";

  409.         case PIX_FMT_MONOBLACK:

  410.             return "mono black";

  411.         case PIX_FMT_PAL8:

  412.             return "Palette";

  413.         case PIX_FMT_YUVJ420P:

  414.             return "yuvj420p";

  415.         case PIX_FMT_YUVJ422P:

  416.             return "yuvj422p";

  417.         case PIX_FMT_YUVJ444P:

  418.             return "yuvj444p";

  419.         case PIX_FMT_XVMC_MPEG2_MC:

  420.             return "xvmc_mpeg2_mc";

  421.         case PIX_FMT_XVMC_MPEG2_IDCT:

  422.             return "xvmc_mpeg2_idct";

  423.         case PIX_FMT_UYVY422:

  424.             return "uyvy422";

  425.         case PIX_FMT_UYYVYY411:

  426.             return "uyyvyy411";

  427.         case PIX_FMT_RGB32_1:

  428.             return "rgb32x";

  429.         case PIX_FMT_BGR32_1:

  430.             return "bgr32x";

  431.         case PIX_FMT_BGR32:

  432.             return "bgr32";

  433.         case PIX_FMT_BGR565:

  434.             return "bgr565";

  435.         case PIX_FMT_BGR555:

  436.             return "bgr555";

  437.         case PIX_FMT_BGR8:

  438.             return "bgr8";

  439.         case PIX_FMT_BGR4:

  440.             return "bgr4";

  441.         case PIX_FMT_BGR4_BYTE:

  442.             return "bgr4 byte";

  443.         case PIX_FMT_RGB8:

  444.             return "rgb8";

  445.         case PIX_FMT_RGB4:

  446.             return "rgb4";

  447.         case PIX_FMT_RGB4_BYTE:

  448.             return "rgb4 byte";

  449.         case PIX_FMT_NV12:

  450.             return "nv12";

  451.         case PIX_FMT_NV21:

  452.             return "nv21";

  453.         case PIX_FMT_YUV440P:

  454.             return "yuv440p";

  455.         case PIX_FMT_VDPAU_H264:

  456.             return "vdpau_h264";

  457.         case PIX_FMT_VDPAU_MPEG1:

  458.             return "vdpau_mpeg1";

  459.         case PIX_FMT_VDPAU_MPEG2:

  460.             return "vdpau_mpeg2";

  461.         case PIX_FMT_VDPAU_WMV3:

  462.             return "vdpau_wmv3";

  463.         case PIX_FMT_VDPAU_VC1:

  464.             return "vdpau_vc1";

  465.         default:

  466.             return "Unknown format";

  467.     }

  468. }

  469. 

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

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

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

  473. {

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

  475.     int i;

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

  477.     {

  478.         int val=1<<18;

  479.         int j;

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

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

  482. 

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

  484.     }

  485. 

  486.     if (uDest)

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

  488.         {

  489.             int u=1<<18;

  490.             int v=1<<18;

  491.             int j;

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

  493.             {

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

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

  496.             }

  497. 

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

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

  500.         }

  501. }

  502. 

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

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

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

  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.         return;

  521. 

  522.     if (dstFormat == PIX_FMT_NV12)

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

  524.         {

  525.             int u=1<<18;

  526.             int v=1<<18;

  527.             int j;

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

  529.             {

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

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

  532.             }

  533. 

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

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

  536.         }

  537.     else

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

  539.         {

  540.             int u=1<<18;

  541.             int v=1<<18;

  542.             int j;

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

  544.             {

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

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

  547.             }

  548. 

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

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

  551.         }

  552. }

  553. 

  554. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type) \

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

  556.         int j;\

  557.         int Y1 = 1<<18;\

  558.         int Y2 = 1<<18;\

  559.         int U  = 1<<18;\

  560.         int V  = 1<<18;\

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

  562.         const int i2= 2*i;\

  563.         \

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

  565.         {\

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

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

  568.         }\

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

  570.         {\

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

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

  573.         }\

  574.         Y1>>=19;\

  575.         Y2>>=19;\

  576.         U >>=19;\

  577.         V >>=19;\

  578. 

  579. #define YSCALE_YUV_2_PACKEDX_C(type) \

  580.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type)\

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

  582.         {\

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

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

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

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

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

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

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

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

  591.         }

  592. 

  593. #define YSCALE_YUV_2_PACKEDX_FULL_C \

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

  595.         int j;\

  596.         int Y = 0;\

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

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

  599.         int R,G,B;\

  600.         \

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

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

  603.         }\

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

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

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

  607.         }\

  608.         Y >>=10;\

  609.         U >>=10;\

  610.         V >>=10;\

  611. 

  612. #define YSCALE_YUV_2_RGBX_FULL_C(rnd) \

  613.     YSCALE_YUV_2_PACKEDX_FULL_C\

  614.         Y-= c->yuv2rgb_y_offset;\

  615.         Y*= c->yuv2rgb_y_coeff;\

  616.         Y+= rnd;\

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

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

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

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

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

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

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

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

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

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

  627.         }\

  628. 

  629. 

  630. #define YSCALE_YUV_2_GRAY16_C \

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

  632.         int j;\

  633.         int Y1 = 1<<18;\

  634.         int Y2 = 1<<18;\

  635.         int U  = 1<<18;\

  636.         int V  = 1<<18;\

  637.         \

  638.         const int i2= 2*i;\

  639.         \

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

  641.         {\

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

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

  644.         }\

  645.         Y1>>=11;\

  646.         Y2>>=11;\

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

  648.         {\

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

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

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

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

  653.         }

  654. 

  655. #define YSCALE_YUV_2_RGBX_C(type) \

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

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

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

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

  660. 

  661. #define YSCALE_YUV_2_PACKED2_C   \

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

  663.         const int i2= 2*i;       \

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

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

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

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

  668. 

  669. #define YSCALE_YUV_2_GRAY16_2_C   \

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

  671.         const int i2= 2*i;       \

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

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

  674. 

  675. #define YSCALE_YUV_2_RGB2_C(type) \

  676.     YSCALE_YUV_2_PACKED2_C\

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

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

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

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

  681. 

  682. #define YSCALE_YUV_2_PACKED1_C \

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

  684.         const int i2= 2*i;\

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

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

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

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

  689. 

  690. #define YSCALE_YUV_2_GRAY16_1_C \

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

  692.         const int i2= 2*i;\

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

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

  695. 

  696. #define YSCALE_YUV_2_RGB1_C(type) \

  697.     YSCALE_YUV_2_PACKED1_C\

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

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

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

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

  702. 

  703. #define YSCALE_YUV_2_PACKED1B_C \

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

  705.         const int i2= 2*i;\

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

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

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

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

  710. 

  711. #define YSCALE_YUV_2_RGB1B_C(type) \

  712.     YSCALE_YUV_2_PACKED1B_C\

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

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

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

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

  717. 

  718. #define YSCALE_YUV_2_MONO2_C \

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

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

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

  722.         int acc;\

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

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

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

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

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

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

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

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

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

  732.         dest++;\

  733.     }\

  734. 

  735. 

  736. #define YSCALE_YUV_2_MONOX_C \

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

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

  739.     int acc=0;\

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

  741.         int j;\

  742.         int Y1=1<<18;\

  743.         int Y2=1<<18;\

  744. \

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

  746.         {\

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

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

  749.         }\

  750.         Y1>>=19;\

  751.         Y2>>=19;\

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

  753.         {\

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

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

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

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

  758.         }\

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

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

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

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

  763.             dest++;\

  764.         }\

  765.     }

  766. 

  767. 

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

  769.     switch(c->dstFormat)\

  770.     {\

  771.     case PIX_FMT_RGB32:\

  772.     case PIX_FMT_BGR32:\

  773.     case PIX_FMT_RGB32_1:\

  774.     case PIX_FMT_BGR32_1:\

  775.         func(uint32_t)\

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

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

  778.         }                \

  779.         break;\

  780.     case PIX_FMT_RGB24:\

  781.         func(uint8_t)\

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

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

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

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

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

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

  788.             dest+=6;\

  789.         }\

  790.         break;\

  791.     case PIX_FMT_BGR24:\

  792.         func(uint8_t)\

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

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

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

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

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

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

  799.             dest+=6;\

  800.         }\

  801.         break;\

  802.     case PIX_FMT_RGB565:\

  803.     case PIX_FMT_BGR565:\

  804.         {\

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

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

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

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

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

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

  811.             func(uint16_t)\

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

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

  814.             }\

  815.         }\

  816.         break;\

  817.     case PIX_FMT_RGB555:\

  818.     case PIX_FMT_BGR555:\

  819.         {\

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

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

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

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

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

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

  826.             func(uint16_t)\

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

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

  829.             }\

  830.         }\

  831.         break;\

  832.     case PIX_FMT_RGB8:\

  833.     case PIX_FMT_BGR8:\

  834.         {\

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

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

  837.             func(uint8_t)\

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

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

  840.             }\

  841.         }\

  842.         break;\

  843.     case PIX_FMT_RGB4:\

  844.     case PIX_FMT_BGR4:\

  845.         {\

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

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

  848.             func(uint8_t)\

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

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

  851.             }\

  852.         }\

  853.         break;\

  854.     case PIX_FMT_RGB4_BYTE:\

  855.     case PIX_FMT_BGR4_BYTE:\

  856.         {\

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

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

  859.             func(uint8_t)\

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

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

  862.             }\

  863.         }\

  864.         break;\

  865.     case PIX_FMT_MONOBLACK:\

  866.     case PIX_FMT_MONOWHITE:\

  867.         {\

  868.             func_monoblack\

  869.         }\

  870.         break;\

  871.     case PIX_FMT_YUYV422:\

  872.         func2\

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

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

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

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

  877.         }                \

  878.         break;\

  879.     case PIX_FMT_UYVY422:\

  880.         func2\

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

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

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

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

  885.         }                \

  886.         break;\

  887.     case PIX_FMT_GRAY16BE:\

  888.         func_g16\

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

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

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

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

  893.         }                \

  894.         break;\

  895.     case PIX_FMT_GRAY16LE:\

  896.         func_g16\

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

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

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

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

  901.         }                \

  902.         break;\

  903.     }\

  904. 

  905. 

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

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

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

  909. {

  910.     int i;

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

  912. }

  913. 

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

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

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

  917. {

  918.     int i;

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

  920.     int aidx= 3;

  921. 

  922.     switch(c->dstFormat){

  923.     case PIX_FMT_ARGB:

  924.         dest++;

  925.         aidx= 0;

  926.     case PIX_FMT_RGB24:

  927.         aidx--;

  928.     case PIX_FMT_RGBA:

  929.         YSCALE_YUV_2_RGBX_FULL_C(1<<21)

  930.             dest[aidx]= 0;

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

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

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

  934.             dest+= step;

  935.         }

  936.         break;

  937.     case PIX_FMT_ABGR:

  938.         dest++;

  939.         aidx= 0;

  940.     case PIX_FMT_BGR24:

  941.         aidx--;

  942.     case PIX_FMT_BGRA:

  943.         YSCALE_YUV_2_RGBX_FULL_C(1<<21)

  944.             dest[aidx]= 0;

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

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

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

  948.             dest+= step;

  949.         }

  950.         break;

  951.     default:

  952.         assert(0);

  953.     }

  954. }

  955. 

  956. //Note: we have C, X86, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one

  957. //Plain C versions

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

  959. #define COMPILE_C

  960. #endif

  961. 

  962. #if ARCH_PPC

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

  964. #undef COMPILE_C

  965. #define COMPILE_ALTIVEC

  966. #endif

  967. #endif //ARCH_PPC

  968. 

  969. #if ARCH_X86

  970. 

  971. #if ((HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || defined (RUNTIME_CPUDETECT)) && CONFIG_GPL

  972. #define COMPILE_MMX

  973. #endif

  974. 

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

  976. #define COMPILE_MMX2

  977. #endif

  978. 

  979. #if ((HAVE_AMD3DNOW && !HAVE_MMX2) || defined (RUNTIME_CPUDETECT)) && CONFIG_GPL

  980. #define COMPILE_3DNOW

  981. #endif

  982. #endif //ARCH_X86

  983. 

  984. #undef HAVE_MMX

  985. #undef HAVE_MMX2

  986. #undef HAVE_AMD3DNOW

  987. #undef HAVE_ALTIVEC

  988. #define HAVE_MMX 0

  989. #define HAVE_MMX2 0

  990. #define HAVE_AMD3DNOW 0

  991. #define HAVE_ALTIVEC 0

  992. 

  993. #ifdef COMPILE_C

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

  995. #include "swscale_template.c"

  996. #endif

  997. 

  998. #ifdef COMPILE_ALTIVEC

  999. #undef RENAME

  1000. #undef HAVE_ALTIVEC

  1001. #define HAVE_ALTIVEC 1

  1002. #define RENAME(a) a ## _altivec

  1003. #include "swscale_template.c"

  1004. #endif

  1005. 

  1006. #if ARCH_X86

  1007. 

  1008. //x86 versions

  1009. /*

  1010. #undef RENAME

  1011. #undef HAVE_MMX

  1012. #undef HAVE_MMX2

  1013. #undef HAVE_AMD3DNOW

  1014. #define ARCH_X86

  1015. #define RENAME(a) a ## _X86

  1016. #include "swscale_template.c"

  1017. */

  1018. //MMX versions

  1019. #ifdef COMPILE_MMX

  1020. #undef RENAME

  1021. #undef HAVE_MMX

  1022. #undef HAVE_MMX2

  1023. #undef HAVE_AMD3DNOW

  1024. #define HAVE_MMX 1

  1025. #define HAVE_MMX2 0

  1026. #define HAVE_AMD3DNOW 0

  1027. #define RENAME(a) a ## _MMX

  1028. #include "swscale_template.c"

  1029. #endif

  1030. 

  1031. //MMX2 versions

  1032. #ifdef COMPILE_MMX2

  1033. #undef RENAME

  1034. #undef HAVE_MMX

  1035. #undef HAVE_MMX2

  1036. #undef HAVE_AMD3DNOW

  1037. #define HAVE_MMX 1

  1038. #define HAVE_MMX2 1

  1039. #define HAVE_AMD3DNOW 0

  1040. #define RENAME(a) a ## _MMX2

  1041. #include "swscale_template.c"

  1042. #endif

  1043. 

  1044. //3DNOW versions

  1045. #ifdef COMPILE_3DNOW

  1046. #undef RENAME

  1047. #undef HAVE_MMX

  1048. #undef HAVE_MMX2

  1049. #undef HAVE_AMD3DNOW

  1050. #define HAVE_MMX 1

  1051. #define HAVE_MMX2 0

  1052. #define HAVE_AMD3DNOW 1

  1053. #define RENAME(a) a ## _3DNow

  1054. #include "swscale_template.c"

  1055. #endif

  1056. 

  1057. #endif //ARCH_X86

  1058. 

  1059. // minor note: the HAVE_xyz are messed up after this line so don't use them

  1060. 

  1061. static double getSplineCoeff(double a, double b, double c, double d, double dist)

  1062. {

  1063. //    printf("%f %f %f %f %f\n", a,b,c,d,dist);

  1064.     if (dist<=1.0)      return ((d*dist + c)*dist + b)*dist +a;

  1065.     else                return getSplineCoeff(        0.0,

  1066.                                              b+ 2.0*c + 3.0*d,

  1067.                                                     c + 3.0*d,

  1068.                                             -b- 3.0*c - 6.0*d,

  1069.                                             dist-1.0);

  1070. }

  1071. 

  1072. static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,

  1073.                              int srcW, int dstW, int filterAlign, int one, int flags,

  1074.                              SwsVector *srcFilter, SwsVector *dstFilter, double param[2])

  1075. {

  1076.     int i;

  1077.     int filterSize;

  1078.     int filter2Size;

  1079.     int minFilterSize;

  1080.     int64_t *filter=NULL;

  1081.     int64_t *filter2=NULL;

  1082.     const int64_t fone= 1LL<<54;

  1083.     int ret= -1;

  1084. #if ARCH_X86

  1085.     if (flags & SWS_CPU_CAPS_MMX)

  1086.         __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)

  1087. #endif

  1088. 

  1089.     // NOTE: the +1 is for the MMX scaler which reads over the end

  1090.     *filterPos = av_malloc((dstW+1)*sizeof(int16_t));

  1091. 

  1092.     if (FFABS(xInc - 0x10000) <10) // unscaled

  1093.     {

  1094.         int i;

  1095.         filterSize= 1;

  1096.         filter= av_mallocz(dstW*sizeof(*filter)*filterSize);

  1097. 

  1098.         for (i=0; i<dstW; i++)

  1099.         {

  1100.             filter[i*filterSize]= fone;

  1101.             (*filterPos)[i]=i;

  1102.         }

  1103. 

  1104.     }

  1105.     else if (flags&SWS_POINT) // lame looking point sampling mode

  1106.     {

  1107.         int i;

  1108.         int xDstInSrc;

  1109.         filterSize= 1;

  1110.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1111. 

  1112.         xDstInSrc= xInc/2 - 0x8000;

  1113.         for (i=0; i<dstW; i++)

  1114.         {

  1115.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1116. 

  1117.             (*filterPos)[i]= xx;

  1118.             filter[i]= fone;

  1119.             xDstInSrc+= xInc;

  1120.         }

  1121.     }

  1122.     else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale

  1123.     {

  1124.         int i;

  1125.         int xDstInSrc;

  1126.         if      (flags&SWS_BICUBIC) filterSize= 4;

  1127.         else if (flags&SWS_X      ) filterSize= 4;

  1128.         else                        filterSize= 2; // SWS_BILINEAR / SWS_AREA

  1129.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1130. 

  1131.         xDstInSrc= xInc/2 - 0x8000;

  1132.         for (i=0; i<dstW; i++)

  1133.         {

  1134.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1135.             int j;

  1136. 

  1137.             (*filterPos)[i]= xx;

  1138.                 //bilinear upscale / linear interpolate / area averaging

  1139.                 for (j=0; j<filterSize; j++)

  1140.                 {

  1141.                     int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);

  1142.                     if (coeff<0) coeff=0;

  1143.                     filter[i*filterSize + j]= coeff;

  1144.                     xx++;

  1145.                 }

  1146.             xDstInSrc+= xInc;

  1147.         }

  1148.     }

  1149.     else

  1150.     {

  1151.         int xDstInSrc;

  1152.         int sizeFactor;

  1153. 

  1154.         if      (flags&SWS_BICUBIC)      sizeFactor=  4;

  1155.         else if (flags&SWS_X)            sizeFactor=  8;

  1156.         else if (flags&SWS_AREA)         sizeFactor=  1; //downscale only, for upscale it is bilinear

  1157.         else if (flags&SWS_GAUSS)        sizeFactor=  8;   // infinite ;)

  1158.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;

  1159.         else if (flags&SWS_SINC)         sizeFactor= 20; // infinite ;)

  1160.         else if (flags&SWS_SPLINE)       sizeFactor= 20;  // infinite ;)

  1161.         else if (flags&SWS_BILINEAR)     sizeFactor=  2;

  1162.         else {

  1163.             sizeFactor= 0; //GCC warning killer

  1164.             assert(0);

  1165.         }

  1166. 

  1167.         if (xInc <= 1<<16)      filterSize= 1 + sizeFactor; // upscale

  1168.         else                    filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;

  1169. 

  1170.         if (filterSize > srcW-2) filterSize=srcW-2;

  1171. 

  1172.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1173. 

  1174.         xDstInSrc= xInc - 0x10000;

  1175.         for (i=0; i<dstW; i++)

  1176.         {

  1177.             int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);

  1178.             int j;

  1179.             (*filterPos)[i]= xx;

  1180.             for (j=0; j<filterSize; j++)

  1181.             {

  1182.                 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;

  1183.                 double floatd;

  1184.                 int64_t coeff;

  1185. 

  1186.                 if (xInc > 1<<16)

  1187.                     d= d*dstW/srcW;

  1188.                 floatd= d * (1.0/(1<<30));

  1189. 

  1190.                 if (flags & SWS_BICUBIC)

  1191.                 {

  1192.                     int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] :   0) * (1<<24);

  1193.                     int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);

  1194.                     int64_t dd = ( d*d)>>30;

  1195.                     int64_t ddd= (dd*d)>>30;

  1196. 

  1197.                     if      (d < 1LL<<30)

  1198.                         coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);

  1199.                     else if (d < 1LL<<31)

  1200.                         coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);

  1201.                     else

  1202.                         coeff=0.0;

  1203.                     coeff *= fone>>(30+24);

  1204.                 }

  1205. /*                else if (flags & SWS_X)

  1206.                 {

  1207.                     double p= param ? param*0.01 : 0.3;

  1208.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1209.                     coeff*= pow(2.0, - p*d*d);

  1210.                 }*/

  1211.                 else if (flags & SWS_X)

  1212.                 {

  1213.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1214.                     double c;

  1215. 

  1216.                     if (floatd<1.0)

  1217.                         c = cos(floatd*PI);

  1218.                     else

  1219.                         c=-1.0;

  1220.                     if (c<0.0)      c= -pow(-c, A);

  1221.                     else            c=  pow( c, A);

  1222.                     coeff= (c*0.5 + 0.5)*fone;

  1223.                 }

  1224.                 else if (flags & SWS_AREA)

  1225.                 {

  1226.                     int64_t d2= d - (1<<29);

  1227.                     if      (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));

  1228.                     else if (d2*xInc <  (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));

  1229.                     else coeff=0.0;

  1230.                     coeff *= fone>>(30+16);

  1231.                 }

  1232.                 else if (flags & SWS_GAUSS)

  1233.                 {

  1234.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1235.                     coeff = (pow(2.0, - p*floatd*floatd))*fone;

  1236.                 }

  1237.                 else if (flags & SWS_SINC)

  1238.                 {

  1239.                     coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;

  1240.                 }

  1241.                 else if (flags & SWS_LANCZOS)

  1242.                 {

  1243.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1244.                     coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;

  1245.                     if (floatd>p) coeff=0;

  1246.                 }

  1247.                 else if (flags & SWS_BILINEAR)

  1248.                 {

  1249.                     coeff= (1<<30) - d;

  1250.                     if (coeff<0) coeff=0;

  1251.                     coeff *= fone >> 30;

  1252.                 }

  1253.                 else if (flags & SWS_SPLINE)

  1254.                 {

  1255.                     double p=-2.196152422706632;

  1256.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;

  1257.                 }

  1258.                 else {

  1259.                     coeff= 0.0; //GCC warning killer

  1260.                     assert(0);

  1261.                 }

  1262. 

  1263.                 filter[i*filterSize + j]= coeff;

  1264.                 xx++;

  1265.             }

  1266.             xDstInSrc+= 2*xInc;

  1267.         }

  1268.     }

  1269. 

  1270.     /* apply src & dst Filter to filter -> filter2

  1271.        av_free(filter);

  1272.     */

  1273.     assert(filterSize>0);

  1274.     filter2Size= filterSize;

  1275.     if (srcFilter) filter2Size+= srcFilter->length - 1;

  1276.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1277.     assert(filter2Size>0);

  1278.     filter2= av_mallocz(filter2Size*dstW*sizeof(*filter2));

  1279. 

  1280.     for (i=0; i<dstW; i++)

  1281.     {

  1282.         int j, k;

  1283. 

  1284.         if(srcFilter){

  1285.             for (k=0; k<srcFilter->length; k++){

  1286.                 for (j=0; j<filterSize; j++)

  1287.                     filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];

  1288.             }

  1289.         }else{

  1290.             for (j=0; j<filterSize; j++)

  1291.                 filter2[i*filter2Size + j]= filter[i*filterSize + j];

  1292.         }

  1293.         //FIXME dstFilter

  1294. 

  1295.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1296.     }

  1297.     av_freep(&filter);

  1298. 

  1299.     /* try to reduce the filter-size (step1 find size and shift left) */

  1300.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1301.     minFilterSize= 0;

  1302.     for (i=dstW-1; i>=0; i--)

  1303.     {

  1304.         int min= filter2Size;

  1305.         int j;

  1306.         int64_t cutOff=0.0;

  1307. 

  1308.         /* get rid off near zero elements on the left by shifting left */

  1309.         for (j=0; j<filter2Size; j++)

  1310.         {

  1311.             int k;

  1312.             cutOff += FFABS(filter2[i*filter2Size]);

  1313. 

  1314.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1315. 

  1316.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1317.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1318. 

  1319.             // move filter coefficients left

  1320.             for (k=1; k<filter2Size; k++)

  1321.                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1322.             filter2[i*filter2Size + k - 1]= 0;

  1323.             (*filterPos)[i]++;

  1324.         }

  1325. 

  1326.         cutOff=0;

  1327.         /* count near zeros on the right */

  1328.         for (j=filter2Size-1; j>0; j--)

  1329.         {

  1330.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1331. 

  1332.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1333.             min--;

  1334.         }

  1335. 

  1336.         if (min>minFilterSize) minFilterSize= min;

  1337.     }

  1338. 

  1339.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1340.         // we can handle the special case 4,

  1341.         // so we don't want to go to the full 8

  1342.         if (minFilterSize < 5)

  1343.             filterAlign = 4;

  1344. 

  1345.         // We really don't want to waste our time

  1346.         // doing useless computation, so fall back on

  1347.         // the scalar C code for very small filters.

  1348.         // Vectorizing is worth it only if you have a

  1349.         // decent-sized vector.

  1350.         if (minFilterSize < 3)

  1351.             filterAlign = 1;

  1352.     }

  1353. 

  1354.     if (flags & SWS_CPU_CAPS_MMX) {

  1355.         // special case for unscaled vertical filtering

  1356.         if (minFilterSize == 1 && filterAlign == 2)

  1357.             filterAlign= 1;

  1358.     }

  1359. 

  1360.     assert(minFilterSize > 0);

  1361.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1362.     assert(filterSize > 0);

  1363.     filter= av_malloc(filterSize*dstW*sizeof(*filter));

  1364.     if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)

  1365.         goto error;

  1366.     *outFilterSize= filterSize;

  1367. 

  1368.     if (flags&SWS_PRINT_INFO)

  1369.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1370.     /* try to reduce the filter-size (step2 reduce it) */

  1371.     for (i=0; i<dstW; i++)

  1372.     {

  1373.         int j;

  1374. 

  1375.         for (j=0; j<filterSize; j++)

  1376.         {

  1377.             if (j>=filter2Size) filter[i*filterSize + j]= 0;

  1378.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1379.             if((flags & SWS_BITEXACT) && j>=minFilterSize)

  1380.                 filter[i*filterSize + j]= 0;

  1381.         }

  1382.     }

  1383. 

  1384. 

  1385.     //FIXME try to align filterPos if possible

  1386. 

  1387.     //fix borders

  1388.     for (i=0; i<dstW; i++)

  1389.     {

  1390.         int j;

  1391.         if ((*filterPos)[i] < 0)

  1392.         {

  1393.             // move filter coefficients left to compensate for filterPos

  1394.             for (j=1; j<filterSize; j++)

  1395.             {

  1396.                 int left= FFMAX(j + (*filterPos)[i], 0);

  1397.                 filter[i*filterSize + left] += filter[i*filterSize + j];

  1398.                 filter[i*filterSize + j]=0;

  1399.             }

  1400.             (*filterPos)[i]= 0;

  1401.         }

  1402. 

  1403.         if ((*filterPos)[i] + filterSize > srcW)

  1404.         {

  1405.             int shift= (*filterPos)[i] + filterSize - srcW;

  1406.             // move filter coefficients right to compensate for filterPos

  1407.             for (j=filterSize-2; j>=0; j--)

  1408.             {

  1409.                 int right= FFMIN(j + shift, filterSize-1);

  1410.                 filter[i*filterSize +right] += filter[i*filterSize +j];

  1411.                 filter[i*filterSize +j]=0;

  1412.             }

  1413.             (*filterPos)[i]= srcW - filterSize;

  1414.         }

  1415.     }

  1416. 

  1417.     // Note the +1 is for the MMX scaler which reads over the end

  1418.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1419.     *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));

  1420. 

  1421.     /* normalize & store in outFilter */

  1422.     for (i=0; i<dstW; i++)

  1423.     {

  1424.         int j;

  1425.         int64_t error=0;

  1426.         int64_t sum=0;

  1427. 

  1428.         for (j=0; j<filterSize; j++)

  1429.         {

  1430.             sum+= filter[i*filterSize + j];

  1431.         }

  1432.         sum= (sum + one/2)/ one;

  1433.         for (j=0; j<*outFilterSize; j++)

  1434.         {

  1435.             int64_t v= filter[i*filterSize + j] + error;

  1436.             int intV= ROUNDED_DIV(v, sum);

  1437.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1438.             error= v - intV*sum;

  1439.         }

  1440.     }

  1441. 

  1442.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1443.     for (i=0; i<*outFilterSize; i++)

  1444.     {

  1445.         int j= dstW*(*outFilterSize);

  1446.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1447.     }

  1448. 

  1449.     ret=0;

  1450. error:

  1451.     av_free(filter);

  1452.     av_free(filter2);

  1453.     return ret;

  1454. }

  1455. 

  1456. #ifdef COMPILE_MMX2

  1457. static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1458. {

  1459.     uint8_t *fragmentA;

  1460.     long imm8OfPShufW1A;

  1461.     long imm8OfPShufW2A;

  1462.     long fragmentLengthA;

  1463.     uint8_t *fragmentB;

  1464.     long imm8OfPShufW1B;

  1465.     long imm8OfPShufW2B;

  1466.     long fragmentLengthB;

  1467.     int fragmentPos;

  1468. 

  1469.     int xpos, i;

  1470. 

  1471.     // create an optimized horizontal scaling routine

  1472. 

  1473.     //code fragment

  1474. 

  1475.     __asm__ volatile(

  1476.         "jmp                         9f                 \n\t"

  1477.     // Begin

  1478.         "0:                                             \n\t"

  1479.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1480.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1481.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1482.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1483.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1484.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1485.         "1:                                             \n\t"

  1486.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1487.         "2:                                             \n\t"

  1488.         "psubw                    %%mm1, %%mm0          \n\t"

  1489.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1490.         "pmullw                   %%mm3, %%mm0          \n\t"

  1491.         "psllw                       $7, %%mm1          \n\t"

  1492.         "paddw                    %%mm1, %%mm0          \n\t"

  1493. 

  1494.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1495. 

  1496.         "add                         $8, %%"REG_a"      \n\t"

  1497.     // End

  1498.         "9:                                             \n\t"

  1499. //        "int $3                                         \n\t"

  1500.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1501.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1502.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1503.         "dec                         %1                 \n\t"

  1504.         "dec                         %2                 \n\t"

  1505.         "sub                         %0, %1             \n\t"

  1506.         "sub                         %0, %2             \n\t"

  1507.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1508.         "sub                         %0, %3             \n\t"

  1509. 

  1510. 

  1511.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1512.         "=r" (fragmentLengthA)

  1513.     );

  1514. 

  1515.     __asm__ volatile(

  1516.         "jmp                         9f                 \n\t"

  1517.     // Begin

  1518.         "0:                                             \n\t"

  1519.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1520.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1521.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1522.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1523.         "1:                                             \n\t"

  1524.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1525.         "2:                                             \n\t"

  1526.         "psubw                    %%mm1, %%mm0          \n\t"

  1527.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1528.         "pmullw                   %%mm3, %%mm0          \n\t"

  1529.         "psllw                       $7, %%mm1          \n\t"

  1530.         "paddw                    %%mm1, %%mm0          \n\t"

  1531. 

  1532.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1533. 

  1534.         "add                         $8, %%"REG_a"      \n\t"

  1535.     // End

  1536.         "9:                                             \n\t"

  1537. //        "int                       $3                   \n\t"

  1538.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1539.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1540.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1541.         "dec                         %1                 \n\t"

  1542.         "dec                         %2                 \n\t"

  1543.         "sub                         %0, %1             \n\t"

  1544.         "sub                         %0, %2             \n\t"

  1545.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1546.         "sub                         %0, %3             \n\t"

  1547. 

  1548. 

  1549.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1550.         "=r" (fragmentLengthB)

  1551.     );

  1552. 

  1553.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1554.     fragmentPos=0;

  1555. 

  1556.     for (i=0; i<dstW/numSplits; i++)

  1557.     {

  1558.         int xx=xpos>>16;

  1559. 

  1560.         if ((i&3) == 0)

  1561.         {

  1562.             int a=0;

  1563.             int b=((xpos+xInc)>>16) - xx;

  1564.             int c=((xpos+xInc*2)>>16) - xx;

  1565.             int d=((xpos+xInc*3)>>16) - xx;

  1566. 

  1567.             filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;

  1568.             filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1569.             filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1570.             filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1571.             filterPos[i/2]= xx;

  1572. 

  1573.             if (d+1<4)

  1574.             {

  1575.                 int maxShift= 3-(d+1);

  1576.                 int shift=0;

  1577. 

  1578.                 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);

  1579. 

  1580.                 funnyCode[fragmentPos + imm8OfPShufW1B]=

  1581.                     (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);

  1582.                 funnyCode[fragmentPos + imm8OfPShufW2B]=

  1583.                     a | (b<<2) | (c<<4) | (d<<6);

  1584. 

  1585.                 if (i+3>=dstW) shift=maxShift; //avoid overread

  1586.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1587. 

  1588.                 if (shift && i>=shift)

  1589.                 {

  1590.                     funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;

  1591.                     funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;

  1592.                     filterPos[i/2]-=shift;

  1593.                 }

  1594. 

  1595.                 fragmentPos+= fragmentLengthB;

  1596.             }

  1597.             else

  1598.             {

  1599.                 int maxShift= 3-d;

  1600.                 int shift=0;

  1601. 

  1602.                 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);

  1603. 

  1604.                 funnyCode[fragmentPos + imm8OfPShufW1A]=

  1605.                 funnyCode[fragmentPos + imm8OfPShufW2A]=

  1606.                     a | (b<<2) | (c<<4) | (d<<6);

  1607. 

  1608.                 if (i+4>=dstW) shift=maxShift; //avoid overread

  1609.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align

  1610. 

  1611.                 if (shift && i>=shift)

  1612.                 {

  1613.                     funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;

  1614.                     funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;

  1615.                     filterPos[i/2]-=shift;

  1616.                 }

  1617. 

  1618.                 fragmentPos+= fragmentLengthA;

  1619.             }

  1620. 

  1621.             funnyCode[fragmentPos]= RET;

  1622.         }

  1623.         xpos+=xInc;

  1624.     }

  1625.     filterPos[i/2]= xpos>>16; // needed to jump to the next part

  1626. }

  1627. #endif /* COMPILE_MMX2 */

  1628. 

  1629. static void globalInit(void){

  1630.     // generating tables:

  1631.     int i;

  1632.     for (i=0; i<768; i++){

  1633.         int c= av_clip_uint8(i-256);

  1634.         clip_table[i]=c;

  1635.     }

  1636. }

  1637. 

  1638. static SwsFunc getSwsFunc(int flags){

  1639. 

  1640. #if defined(RUNTIME_CPUDETECT) && CONFIG_GPL

  1641. #if ARCH_X86

  1642.     // ordered per speed fastest first

  1643.     if (flags & SWS_CPU_CAPS_MMX2)

  1644.         return swScale_MMX2;

  1645.     else if (flags & SWS_CPU_CAPS_3DNOW)

  1646.         return swScale_3DNow;

  1647.     else if (flags & SWS_CPU_CAPS_MMX)

  1648.         return swScale_MMX;

  1649.     else

  1650.         return swScale_C;

  1651. 

  1652. #else

  1653. #if ARCH_PPC

  1654.     if (flags & SWS_CPU_CAPS_ALTIVEC)

  1655.         return swScale_altivec;

  1656.     else

  1657.         return swScale_C;

  1658. #endif

  1659.     return swScale_C;

  1660. #endif /* ARCH_X86 */

  1661. #else //RUNTIME_CPUDETECT

  1662. #if   HAVE_MMX2

  1663.     return swScale_MMX2;

  1664. #elif HAVE_AMD3DNOW

  1665.     return swScale_3DNow;

  1666. #elif HAVE_MMX

  1667.     return swScale_MMX;

  1668. #elif HAVE_ALTIVEC

  1669.     return swScale_altivec;

  1670. #else

  1671.     return swScale_C;

  1672. #endif

  1673. #endif //!RUNTIME_CPUDETECT

  1674. }

  1675. 

  1676. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1677.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1678.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1679.     /* Copy Y plane */

  1680.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1681.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1682.     else

  1683.     {

  1684.         int i;

  1685.         uint8_t *srcPtr= src[0];

  1686.         uint8_t *dstPtr= dst;

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

  1688.         {

  1689.             memcpy(dstPtr, srcPtr, c->srcW);

  1690.             srcPtr+= srcStride[0];

  1691.             dstPtr+= dstStride[0];

  1692.         }

  1693.     }

  1694.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1695.     if (c->dstFormat == PIX_FMT_NV12)

  1696.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  1697.     else

  1698.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  1699. 

  1700.     return srcSliceH;

  1701. }

  1702. 

  1703. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1704.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1705.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1706. 

  1707.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1708. 

  1709.     return srcSliceH;

  1710. }

  1711. 

  1712. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1713.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1714.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1715. 

  1716.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1717. 

  1718.     return srcSliceH;

  1719. }

  1720. 

  1721. static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1722.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1723.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1724. 

  1725.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1726. 

  1727.     return srcSliceH;

  1728. }

  1729. 

  1730. static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1731.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1732.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1733. 

  1734.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1735. 

  1736.     return srcSliceH;

  1737. }

  1738. 

  1739. static int pal2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1740.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  1741.     const enum PixelFormat srcFormat= c->srcFormat;

  1742.     const enum PixelFormat dstFormat= c->dstFormat;

  1743.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  1744.                  const uint8_t *palette)=NULL;

  1745.     int i;

  1746.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1747.     uint8_t *srcPtr= src[0];

  1748. 

  1749.     if (!usePal(srcFormat))

  1750.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1751.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1752. 

  1753.     switch(dstFormat){

  1754.     case PIX_FMT_RGB32  : conv = palette8topacked32; break;

  1755.     case PIX_FMT_BGR32  : conv = palette8topacked32; break;

  1756.     case PIX_FMT_BGR32_1: conv = palette8topacked32; break;

  1757.     case PIX_FMT_RGB32_1: conv = palette8topacked32; break;

  1758.     case PIX_FMT_RGB24  : conv = palette8topacked24; break;

  1759.     case PIX_FMT_BGR24  : conv = palette8topacked24; break;

  1760.     default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1761.                     sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1762.     }

  1763. 

  1764. 

  1765.     for (i=0; i<srcSliceH; i++) {

  1766.         conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  1767.         srcPtr+= srcStride[0];

  1768.         dstPtr+= dstStride[0];

  1769.     }

  1770. 

  1771.     return srcSliceH;

  1772. }

  1773. 

  1774. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  1775. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1776.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  1777.     const enum PixelFormat srcFormat= c->srcFormat;

  1778.     const enum PixelFormat dstFormat= c->dstFormat;

  1779.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  1780.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  1781.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1782.     const int dstId= fmt_depth(dstFormat) >> 2;

  1783.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1784. 

  1785.     /* BGR -> BGR */

  1786.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  1787.        || (isRGB(srcFormat) && isRGB(dstFormat))){

  1788.         switch(srcId | (dstId<<4)){

  1789.         case 0x34: conv= rgb16to15; break;

  1790.         case 0x36: conv= rgb24to15; break;

  1791.         case 0x38: conv= rgb32to15; break;

  1792.         case 0x43: conv= rgb15to16; break;

  1793.         case 0x46: conv= rgb24to16; break;

  1794.         case 0x48: conv= rgb32to16; break;

  1795.         case 0x63: conv= rgb15to24; break;

  1796.         case 0x64: conv= rgb16to24; break;

  1797.         case 0x68: conv= rgb32to24; break;

  1798.         case 0x83: conv= rgb15to32; break;

  1799.         case 0x84: conv= rgb16to32; break;

  1800.         case 0x86: conv= rgb24to32; break;

  1801.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1802.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1803.         }

  1804.     }else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  1805.              || (isRGB(srcFormat) && isBGR(dstFormat))){

  1806.         switch(srcId | (dstId<<4)){

  1807.         case 0x33: conv= rgb15tobgr15; break;

  1808.         case 0x34: conv= rgb16tobgr15; break;

  1809.         case 0x36: conv= rgb24tobgr15; break;

  1810.         case 0x38: conv= rgb32tobgr15; break;

  1811.         case 0x43: conv= rgb15tobgr16; break;

  1812.         case 0x44: conv= rgb16tobgr16; break;

  1813.         case 0x46: conv= rgb24tobgr16; break;

  1814.         case 0x48: conv= rgb32tobgr16; break;

  1815.         case 0x63: conv= rgb15tobgr24; break;

  1816.         case 0x64: conv= rgb16tobgr24; break;

  1817.         case 0x66: conv= rgb24tobgr24; break;

  1818.         case 0x68: conv= rgb32tobgr24; break;

  1819.         case 0x83: conv= rgb15tobgr32; break;

  1820.         case 0x84: conv= rgb16tobgr32; break;

  1821.         case 0x86: conv= rgb24tobgr32; break;

  1822.         case 0x88: conv= rgb32tobgr32; break;

  1823.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1824.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1825.         }

  1826.     }else{

  1827.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1828.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1829.     }

  1830. 

  1831.     if(conv)

  1832.     {

  1833.         uint8_t *srcPtr= src[0];

  1834.         if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)

  1835.             srcPtr += ALT32_CORR;

  1836. 

  1837.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  1838.             conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1839.         else

  1840.         {

  1841.             int i;

  1842.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1843. 

  1844.             for (i=0; i<srcSliceH; i++)

  1845.             {

  1846.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1847.                 srcPtr+= srcStride[0];

  1848.                 dstPtr+= dstStride[0];

  1849.             }

  1850.         }

  1851.     }

  1852.     return srcSliceH;

  1853. }

  1854. 

  1855. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1856.                               int srcSliceH, uint8_t* dst[], int dstStride[]){

  1857. 

  1858.     rgb24toyv12(

  1859.         src[0],

  1860.         dst[0]+ srcSliceY    *dstStride[0],

  1861.         dst[1]+(srcSliceY>>1)*dstStride[1],

  1862.         dst[2]+(srcSliceY>>1)*dstStride[2],

  1863.         c->srcW, srcSliceH,

  1864.         dstStride[0], dstStride[1], srcStride[0]);

  1865.     return srcSliceH;

  1866. }

  1867. 

  1868. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1869.                              int srcSliceH, uint8_t* dst[], int dstStride[]){

  1870.     int i;

  1871. 

  1872.     /* copy Y */

  1873.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  1874.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  1875.     else{

  1876.         uint8_t *srcPtr= src[0];

  1877.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1878. 

  1879.         for (i=0; i<srcSliceH; i++)

  1880.         {

  1881.             memcpy(dstPtr, srcPtr, c->srcW);

  1882.             srcPtr+= srcStride[0];

  1883.             dstPtr+= dstStride[0];

  1884.         }

  1885.     }

  1886. 

  1887.     if (c->dstFormat==PIX_FMT_YUV420P){

  1888.         planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);

  1889.         planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);

  1890.     }else{

  1891.         planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);

  1892.         planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);

  1893.     }

  1894.     return srcSliceH;

  1895. }

  1896. 

  1897. /* unscaled copy like stuff (assumes nearly identical formats) */

  1898. static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1899.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  1900. {

  1901.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1902.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1903.     else

  1904.     {

  1905.         int i;

  1906.         uint8_t *srcPtr= src[0];

  1907.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1908.         int length=0;

  1909. 

  1910.         /* universal length finder */

  1911.         while(length+c->srcW <= FFABS(dstStride[0])

  1912.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  1913.         assert(length!=0);

  1914. 

  1915.         for (i=0; i<srcSliceH; i++)

  1916.         {

  1917.             memcpy(dstPtr, srcPtr, length);

  1918.             srcPtr+= srcStride[0];

  1919.             dstPtr+= dstStride[0];

  1920.         }

  1921.     }

  1922.     return srcSliceH;

  1923. }

  1924. 

  1925. static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1926.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  1927. {

  1928.     int plane;

  1929.     for (plane=0; plane<3; plane++)

  1930.     {

  1931.         int length= plane==0 ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1932.         int y=      plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1933.         int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1934. 

  1935.         if ((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)

  1936.         {

  1937.             if (!isGray(c->dstFormat))

  1938.                 memset(dst[plane], 128, dstStride[plane]*height);

  1939.         }

  1940.         else

  1941.         {

  1942.             if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  1943.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  1944.             else

  1945.             {

  1946.                 int i;

  1947.                 uint8_t *srcPtr= src[plane];

  1948.                 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  1949.                 for (i=0; i<height; i++)

  1950.                 {

  1951.                     memcpy(dstPtr, srcPtr, length);

  1952.                     srcPtr+= srcStride[plane];

  1953.                     dstPtr+= dstStride[plane];

  1954.                 }

  1955.             }

  1956.         }

  1957.     }

  1958.     return srcSliceH;

  1959. }

  1960. 

  1961. static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1962.                         int srcSliceH, uint8_t* dst[], int dstStride[]){

  1963. 

  1964.     int length= c->srcW;

  1965.     int y=      srcSliceY;

  1966.     int height= srcSliceH;

  1967.     int i, j;

  1968.     uint8_t *srcPtr= src[0];

  1969.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  1970. 

  1971.     if (!isGray(c->dstFormat)){

  1972.         int height= -((-srcSliceH)>>c->chrDstVSubSample);

  1973.         memset(dst[1], 128, dstStride[1]*height);

  1974.         memset(dst[2], 128, dstStride[2]*height);

  1975.     }

  1976.     if (c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;

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

  1978.     {

  1979.         for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  1980.         srcPtr+= srcStride[0];

  1981.         dstPtr+= dstStride[0];

  1982.     }

  1983.     return srcSliceH;

  1984. }

  1985. 

  1986. static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1987.                         int srcSliceH, uint8_t* dst[], int dstStride[]){

  1988. 

  1989.     int length= c->srcW;

  1990.     int y=      srcSliceY;

  1991.     int height= srcSliceH;

  1992.     int i, j;

  1993.     uint8_t *srcPtr= src[0];

  1994.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  1995.     for (i=0; i<height; i++)

  1996.     {

  1997.         for (j=0; j<length; j++)

  1998.         {

  1999.             dstPtr[j<<1] = srcPtr[j];

  2000.             dstPtr[(j<<1)+1] = srcPtr[j];

  2001.         }

  2002.         srcPtr+= srcStride[0];

  2003.         dstPtr+= dstStride[0];

  2004.     }

  2005.     return srcSliceH;

  2006. }

  2007. 

  2008. static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2009.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  2010. 

  2011.     int length= c->srcW;

  2012.     int y=      srcSliceY;

  2013.     int height= srcSliceH;

  2014.     int i, j;

  2015.     uint16_t *srcPtr= (uint16_t*)src[0];

  2016.     uint16_t *dstPtr= (uint16_t*)(dst[0] + dstStride[0]*y/2);

  2017.     for (i=0; i<height; i++)

  2018.     {

  2019.         for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);

  2020.         srcPtr+= srcStride[0]/2;

  2021.         dstPtr+= dstStride[0]/2;

  2022.     }

  2023.     return srcSliceH;

  2024. }

  2025. 

  2026. 

  2027. static void getSubSampleFactors(int *h, int *v, int format){

  2028.     switch(format){

  2029.     case PIX_FMT_UYVY422:

  2030.     case PIX_FMT_YUYV422:

  2031.         *h=1;

  2032.         *v=0;

  2033.         break;

  2034.     case PIX_FMT_YUV420P:

  2035.     case PIX_FMT_YUVA420P:

  2036.     case PIX_FMT_GRAY16BE:

  2037.     case PIX_FMT_GRAY16LE:

  2038.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  2039.     case PIX_FMT_NV12:

  2040.     case PIX_FMT_NV21:

  2041.         *h=1;

  2042.         *v=1;

  2043.         break;

  2044.     case PIX_FMT_YUV440P:

  2045.         *h=0;

  2046.         *v=1;

  2047.         break;

  2048.     case PIX_FMT_YUV410P:

  2049.         *h=2;

  2050.         *v=2;

  2051.         break;

  2052.     case PIX_FMT_YUV444P:

  2053.         *h=0;

  2054.         *v=0;

  2055.         break;

  2056.     case PIX_FMT_YUV422P:

  2057.         *h=1;

  2058.         *v=0;

  2059.         break;

  2060.     case PIX_FMT_YUV411P:

  2061.         *h=2;

  2062.         *v=0;

  2063.         break;

  2064.     default:

  2065.         *h=0;

  2066.         *v=0;

  2067.         break;

  2068.     }

  2069. }

  2070. 

  2071. static uint16_t roundToInt16(int64_t f){

  2072.     int r= (f + (1<<15))>>16;

  2073.          if (r<-0x7FFF) return 0x8000;

  2074.     else if (r> 0x7FFF) return 0x7FFF;

  2075.     else                return r;

  2076. }

  2077. 

  2078. /**

  2079.  * @param inv_table the yuv2rgb coefficients, normally Inverse_Table_6_9[x]

  2080.  * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235

  2081.  * @return -1 if not supported

  2082.  */

  2083. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){

  2084.     int64_t crv =  inv_table[0];

  2085.     int64_t cbu =  inv_table[1];

  2086.     int64_t cgu = -inv_table[2];

  2087.     int64_t cgv = -inv_table[3];

  2088.     int64_t cy  = 1<<16;

  2089.     int64_t oy  = 0;

  2090. 

  2091.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  2092.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  2093. 

  2094.     c->brightness= brightness;

  2095.     c->contrast  = contrast;

  2096.     c->saturation= saturation;

  2097.     c->srcRange  = srcRange;

  2098.     c->dstRange  = dstRange;

  2099.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return 0;

  2100. 

  2101.     c->uOffset=   0x0400040004000400LL;

  2102.     c->vOffset=   0x0400040004000400LL;

  2103. 

  2104.     if (!srcRange){

  2105.         cy= (cy*255) / 219;

  2106.         oy= 16<<16;

  2107.     }else{

  2108.         crv= (crv*224) / 255;

  2109.         cbu= (cbu*224) / 255;

  2110.         cgu= (cgu*224) / 255;

  2111.         cgv= (cgv*224) / 255;

  2112.     }

  2113. 

  2114.     cy = (cy *contrast             )>>16;

  2115.     crv= (crv*contrast * saturation)>>32;

  2116.     cbu= (cbu*contrast * saturation)>>32;

  2117.     cgu= (cgu*contrast * saturation)>>32;

  2118.     cgv= (cgv*contrast * saturation)>>32;

  2119. 

  2120.     oy -= 256*brightness;

  2121. 

  2122.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  2123.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  2124.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  2125.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  2126.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  2127.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  2128. 

  2129.     c->yuv2rgb_y_coeff  = (int16_t)roundToInt16(cy <<13);

  2130.     c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);

  2131.     c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);

  2132.     c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);

  2133.     c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);

  2134.     c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);

  2135. 

  2136.     yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  2137.     //FIXME factorize

  2138. 

  2139. #ifdef COMPILE_ALTIVEC

  2140.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  2141.         yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);

  2142. #endif

  2143.     return 0;

  2144. }

  2145. 

  2146. /**

  2147.  * @return -1 if not supported

  2148.  */

  2149. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){

  2150.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2151. 

  2152.     *inv_table = c->srcColorspaceTable;

  2153.     *table     = c->dstColorspaceTable;

  2154.     *srcRange  = c->srcRange;

  2155.     *dstRange  = c->dstRange;

  2156.     *brightness= c->brightness;

  2157.     *contrast  = c->contrast;

  2158.     *saturation= c->saturation;

  2159. 

  2160.     return 0;

  2161. }

  2162. 

  2163. static int handle_jpeg(enum PixelFormat *format)

  2164. {

  2165.     switch (*format) {

  2166.         case PIX_FMT_YUVJ420P:

  2167.             *format = PIX_FMT_YUV420P;

  2168.             return 1;

  2169.         case PIX_FMT_YUVJ422P:

  2170.             *format = PIX_FMT_YUV422P;

  2171.             return 1;

  2172.         case PIX_FMT_YUVJ444P:

  2173.             *format = PIX_FMT_YUV444P;

  2174.             return 1;

  2175.         case PIX_FMT_YUVJ440P:

  2176.             *format = PIX_FMT_YUV440P;

  2177.             return 1;

  2178.         default:

  2179.             return 0;

  2180.     }

  2181. }

  2182. 

  2183. SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  2184.                            SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){

  2185. 

  2186.     SwsContext *c;

  2187.     int i;

  2188.     int usesVFilter, usesHFilter;

  2189.     int unscaled, needsDither;

  2190.     int srcRange, dstRange;

  2191.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2192. #if ARCH_X86

  2193.     if (flags & SWS_CPU_CAPS_MMX)

  2194.         __asm__ volatile("emms\n\t"::: "memory");

  2195. #endif

  2196. 

  2197. #if !defined(RUNTIME_CPUDETECT) || !CONFIG_GPL //ensure that the flags match the compiled variant if cpudetect is off

  2198.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2199. #if   HAVE_MMX2

  2200.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2201. #elif HAVE_AMD3DNOW

  2202.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2203. #elif HAVE_MMX

  2204.     flags |= SWS_CPU_CAPS_MMX;

  2205. #elif HAVE_ALTIVEC

  2206.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2207. #elif ARCH_BFIN

  2208.     flags |= SWS_CPU_CAPS_BFIN;

  2209. #endif

  2210. #endif /* RUNTIME_CPUDETECT */

  2211.     if (clip_table[512] != 255) globalInit();

  2212.     if (!rgb15to16) sws_rgb2rgb_init(flags);

  2213. 

  2214.     unscaled = (srcW == dstW && srcH == dstH);

  2215.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2216.         && (fmt_depth(dstFormat))<24

  2217.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2218. 

  2219.     srcRange = handle_jpeg(&srcFormat);

  2220.     dstRange = handle_jpeg(&dstFormat);

  2221. 

  2222.     if (!isSupportedIn(srcFormat))

  2223.     {

  2224.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));

  2225.         return NULL;

  2226.     }

  2227.     if (!isSupportedOut(dstFormat))

  2228.     {

  2229.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));

  2230.         return NULL;

  2231.     }

  2232. 

  2233.     i= flags & ( SWS_POINT

  2234.                 |SWS_AREA

  2235.                 |SWS_BILINEAR

  2236.                 |SWS_FAST_BILINEAR

  2237.                 |SWS_BICUBIC

  2238.                 |SWS_X

  2239.                 |SWS_GAUSS

  2240.                 |SWS_LANCZOS

  2241.                 |SWS_SINC

  2242.                 |SWS_SPLINE

  2243.                 |SWS_BICUBLIN);

  2244.     if(!i || (i & (i-1)))

  2245.     {

  2246.         av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be chosen\n");

  2247.         return NULL;

  2248.     }

  2249. 

  2250.     /* sanity check */

  2251.     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

  2252.     {

  2253.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2254.                srcW, srcH, dstW, dstH);

  2255.         return NULL;

  2256.     }

  2257.     if(srcW > VOFW || dstW > VOFW){

  2258.         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile-time maximum width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");

  2259.         return NULL;

  2260.     }

  2261. 

  2262.     if (!dstFilter) dstFilter= &dummyFilter;

  2263.     if (!srcFilter) srcFilter= &dummyFilter;

  2264. 

  2265.     c= av_mallocz(sizeof(SwsContext));

  2266. 

  2267.     c->av_class = &sws_context_class;

  2268.     c->srcW= srcW;

  2269.     c->srcH= srcH;

  2270.     c->dstW= dstW;

  2271.     c->dstH= dstH;

  2272.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2273.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2274.     c->flags= flags;

  2275.     c->dstFormat= dstFormat;

  2276.     c->srcFormat= srcFormat;

  2277.     c->vRounder= 4* 0x0001000100010001ULL;

  2278. 

  2279.     usesHFilter= usesVFilter= 0;

  2280.     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;

  2281.     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;

  2282.     if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;

  2283.     if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;

  2284.     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;

  2285.     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;

  2286.     if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;

  2287.     if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;

  2288. 

  2289.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2290.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2291. 

  2292.     // reuse chroma for 2 pixels RGB/BGR unless user wants full chroma interpolation

  2293.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2294. 

  2295.     // drop some chroma lines if the user wants it

  2296.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2297.     c->chrSrcVSubSample+= c->vChrDrop;

  2298. 

  2299.     // drop every other pixel for chroma calculation unless user wants full chroma

  2300.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2301.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2302.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2303.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE

  2304.       && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2305.         c->chrSrcHSubSample=1;

  2306. 

  2307.     if (param){

  2308.         c->param[0] = param[0];

  2309.         c->param[1] = param[1];

  2310.     }else{

  2311.         c->param[0] =

  2312.         c->param[1] = SWS_PARAM_DEFAULT;

  2313.     }

  2314. 

  2315.     c->chrIntHSubSample= c->chrDstHSubSample;

  2316.     c->chrIntVSubSample= c->chrSrcVSubSample;

  2317. 

  2318.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2319.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2320.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2321.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2322.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2323. 

  2324.     sws_setColorspaceDetails(c, Inverse_Table_6_9[SWS_CS_DEFAULT], srcRange, Inverse_Table_6_9[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);

  2325. 

  2326.     /* unscaled special cases */

  2327.     if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat)))

  2328.     {

  2329.         /* yv12_to_nv12 */

  2330.         if (srcFormat == PIX_FMT_YUV420P && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))

  2331.         {

  2332.             c->swScale= PlanarToNV12Wrapper;

  2333.         }

  2334. #if CONFIG_GPL

  2335.         /* yuv2bgr */

  2336.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P) && (isBGR(dstFormat) || isRGB(dstFormat))

  2337.             && !(flags & SWS_ACCURATE_RND) && !(dstH&1))

  2338.         {

  2339.             c->swScale= yuv2rgb_get_func_ptr(c);

  2340.         }

  2341. #endif

  2342. 

  2343.         if (srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_BITEXACT))

  2344.         {

  2345.             c->swScale= yvu9toyv12Wrapper;

  2346.         }

  2347. 

  2348.         /* bgr24toYV12 */

  2349.         if (srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_ACCURATE_RND))

  2350.             c->swScale= bgr24toyv12Wrapper;

  2351. 

  2352.         /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  2353.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2354.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2355.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2356.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2357.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2358.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2359.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2360.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2361.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2362.            && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  2363.                                              && dstFormat != PIX_FMT_RGB32_1

  2364.                                              && dstFormat != PIX_FMT_BGR32_1

  2365.            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2366.              c->swScale= rgb2rgbWrapper;

  2367. 

  2368.         if ((usePal(srcFormat) && (

  2369.                  dstFormat == PIX_FMT_RGB32   ||

  2370.                  dstFormat == PIX_FMT_RGB32_1 ||

  2371.                  dstFormat == PIX_FMT_RGB24   ||

  2372.                  dstFormat == PIX_FMT_BGR32   ||

  2373.                  dstFormat == PIX_FMT_BGR32_1 ||

  2374.                  dstFormat == PIX_FMT_BGR24)))

  2375.              c->swScale= pal2rgbWrapper;

  2376. 

  2377.         if (srcFormat == PIX_FMT_YUV422P)

  2378.         {

  2379.             if (dstFormat == PIX_FMT_YUYV422)

  2380.                 c->swScale= YUV422PToYuy2Wrapper;

  2381.             else if (dstFormat == PIX_FMT_UYVY422)

  2382.                 c->swScale= YUV422PToUyvyWrapper;

  2383.         }

  2384. 

  2385.         /* LQ converters if -sws 0 or -sws 4*/

  2386.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){

  2387.             /* yv12_to_yuy2 */

  2388.             if (srcFormat == PIX_FMT_YUV420P)

  2389.             {

  2390.                 if (dstFormat == PIX_FMT_YUYV422)

  2391.                     c->swScale= PlanarToYuy2Wrapper;

  2392.                 else if (dstFormat == PIX_FMT_UYVY422)

  2393.                     c->swScale= PlanarToUyvyWrapper;

  2394.             }

  2395.         }

  2396. 

  2397. #ifdef COMPILE_ALTIVEC

  2398.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2399.             srcFormat == PIX_FMT_YUV420P) {

  2400.           // unscaled YV12 -> packed YUV, we want speed

  2401.           if (dstFormat == PIX_FMT_YUYV422)

  2402.               c->swScale= yv12toyuy2_unscaled_altivec;

  2403.           else if (dstFormat == PIX_FMT_UYVY422)

  2404.               c->swScale= yv12touyvy_unscaled_altivec;

  2405.         }

  2406. #endif

  2407. 

  2408.         /* simple copy */

  2409.         if (  srcFormat == dstFormat

  2410.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2411.             || (isPlanarYUV(dstFormat) && isGray(srcFormat)))

  2412.         {

  2413.             if (isPacked(c->srcFormat))

  2414.                 c->swScale= packedCopy;

  2415.             else /* Planar YUV or gray */

  2416.                 c->swScale= planarCopy;

  2417.         }

  2418. 

  2419.         /* gray16{le,be} conversions */

  2420.         if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))

  2421.         {

  2422.             c->swScale= gray16togray;

  2423.         }

  2424.         if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))

  2425.         {

  2426.             c->swScale= graytogray16;

  2427.         }

  2428.         if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))

  2429.         {

  2430.             c->swScale= gray16swap;

  2431.         }

  2432. 

  2433. #if ARCH_BFIN

  2434.         if (flags & SWS_CPU_CAPS_BFIN)

  2435.             ff_bfin_get_unscaled_swscale (c);

  2436. #endif

  2437. 

  2438.         if (c->swScale){

  2439.             if (flags&SWS_PRINT_INFO)

  2440.                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",

  2441.                                 sws_format_name(srcFormat), sws_format_name(dstFormat));

  2442.             return c;

  2443.         }

  2444.     }

  2445. 

  2446.     if (flags & SWS_CPU_CAPS_MMX2)

  2447.     {

  2448.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2449.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))

  2450.         {

  2451.             if (flags&SWS_PRINT_INFO)

  2452.                 av_log(c, AV_LOG_INFO, "output width is not a multiple of 32 -> no MMX2 scaler\n");

  2453.         }

  2454.         if (usesHFilter) c->canMMX2BeUsed=0;

  2455.     }

  2456.     else

  2457.         c->canMMX2BeUsed=0;

  2458. 

  2459.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2460.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2461. 

  2462.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2463.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2464.     // n-2 is the last chrominance sample available

  2465.     // this is not perfect, but no one should notice the difference, the more correct variant

  2466.     // would be like the vertical one, but that would require some special code for the

  2467.     // first and last pixel

  2468.     if (flags&SWS_FAST_BILINEAR)

  2469.     {

  2470.         if (c->canMMX2BeUsed)

  2471.         {

  2472.             c->lumXInc+= 20;

  2473.             c->chrXInc+= 20;

  2474.         }

  2475.         //we don't use the x86 asm scaler if MMX is available

  2476.         else if (flags & SWS_CPU_CAPS_MMX)

  2477.         {

  2478.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2479.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2480.         }

  2481.     }

  2482. 

  2483.     /* precalculate horizontal scaler filter coefficients */

  2484.     {

  2485.         const int filterAlign=

  2486.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2487.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2488.             1;

  2489. 

  2490.         initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2491.                    srcW      ,       dstW, filterAlign, 1<<14,

  2492.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2493.                    srcFilter->lumH, dstFilter->lumH, c->param);

  2494.         initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2495.                    c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2496.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2497.                    srcFilter->chrH, dstFilter->chrH, c->param);

  2498. 

  2499. #define MAX_FUNNY_CODE_SIZE 10000

  2500. #if defined(COMPILE_MMX2)

  2501. // can't downscale !!!

  2502.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))

  2503.         {

  2504. #ifdef MAP_ANONYMOUS

  2505.             c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2506.             c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2507. #else

  2508.             c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2509.             c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2510. #endif

  2511. 

  2512.             c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));

  2513.             c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));

  2514.             c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));

  2515.             c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));

  2516. 

  2517.             initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2518.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2519.         }

  2520. #endif /* defined(COMPILE_MMX2) */

  2521.     } // initialize horizontal stuff

  2522. 

  2523. 

  2524. 

  2525.     /* precalculate vertical scaler filter coefficients */

  2526.     {

  2527.         const int filterAlign=

  2528.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2529.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2530.             1;

  2531. 

  2532.         initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2533.                    srcH      ,        dstH, filterAlign, (1<<12),

  2534.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2535.                    srcFilter->lumV, dstFilter->lumV, c->param);

  2536.         initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2537.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12),

  2538.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2539.                    srcFilter->chrV, dstFilter->chrV, c->param);

  2540. 

  2541. #if HAVE_ALTIVEC

  2542.         c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);

  2543.         c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);

  2544. 

  2545.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2546.             int j;

  2547.             short *p = (short *)&c->vYCoeffsBank[i];

  2548.             for (j=0;j<8;j++)

  2549.                 p[j] = c->vLumFilter[i];

  2550.         }

  2551. 

  2552.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2553.             int j;

  2554.             short *p = (short *)&c->vCCoeffsBank[i];

  2555.             for (j=0;j<8;j++)

  2556.                 p[j] = c->vChrFilter[i];

  2557.         }

  2558. #endif

  2559.     }

  2560. 

  2561.     // calculate buffer sizes so that they won't run out while handling these damn slices

  2562.     c->vLumBufSize= c->vLumFilterSize;

  2563.     c->vChrBufSize= c->vChrFilterSize;

  2564.     for (i=0; i<dstH; i++)

  2565.     {

  2566.         int chrI= i*c->chrDstH / dstH;

  2567.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2568.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2569. 

  2570.         nextSlice>>= c->chrSrcVSubSample;

  2571.         nextSlice<<= c->chrSrcVSubSample;

  2572.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2573.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];

  2574.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2575.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2576.     }

  2577. 

  2578.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2579.     c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2580.     c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));

  2581.     //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)

  2582.     /* align at 16 bytes for AltiVec */

  2583.     for (i=0; i<c->vLumBufSize; i++)

  2584.         c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2585.     for (i=0; i<c->vChrBufSize; i++)

  2586.         c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);

  2587. 

  2588.     //try to avoid drawing green stuff between the right end and the stride end

  2589.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);

  2590. 

  2591.     assert(2*VOFW == VOF);

  2592. 

  2593.     assert(c->chrDstH <= dstH);

  2594. 

  2595.     if (flags&SWS_PRINT_INFO)

  2596.     {

  2597. #ifdef DITHER1XBPP

  2598.         const char *dither= " dithered";

  2599. #else

  2600.         const char *dither= "";

  2601. #endif

  2602.         if (flags&SWS_FAST_BILINEAR)

  2603.             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");

  2604.         else if (flags&SWS_BILINEAR)

  2605.             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");

  2606.         else if (flags&SWS_BICUBIC)

  2607.             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");

  2608.         else if (flags&SWS_X)

  2609.             av_log(c, AV_LOG_INFO, "Experimental scaler, ");

  2610.         else if (flags&SWS_POINT)

  2611.             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");

  2612.         else if (flags&SWS_AREA)

  2613.             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");

  2614.         else if (flags&SWS_BICUBLIN)

  2615.             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");

  2616.         else if (flags&SWS_GAUSS)

  2617.             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");

  2618.         else if (flags&SWS_SINC)

  2619.             av_log(c, AV_LOG_INFO, "Sinc scaler, ");

  2620.         else if (flags&SWS_LANCZOS)

  2621.             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");

  2622.         else if (flags&SWS_SPLINE)

  2623.             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");

  2624.         else

  2625.             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");

  2626. 

  2627.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2628.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  2629.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2630.         else

  2631.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  2632.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  2633. 

  2634.         if (flags & SWS_CPU_CAPS_MMX2)

  2635.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  2636.         else if (flags & SWS_CPU_CAPS_3DNOW)

  2637.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  2638.         else if (flags & SWS_CPU_CAPS_MMX)

  2639.             av_log(c, AV_LOG_INFO, "using MMX\n");

  2640.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  2641.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  2642.         else

  2643.             av_log(c, AV_LOG_INFO, "using C\n");

  2644.     }

  2645. 

  2646.     if (flags & SWS_PRINT_INFO)

  2647.     {

  2648.         if (flags & SWS_CPU_CAPS_MMX)

  2649.         {

  2650.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2651.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  2652.             else

  2653.             {

  2654.                 if (c->hLumFilterSize==4)

  2655.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");

  2656.                 else if (c->hLumFilterSize==8)

  2657.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");

  2658.                 else

  2659.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");

  2660. 

  2661.                 if (c->hChrFilterSize==4)

  2662.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");

  2663.                 else if (c->hChrFilterSize==8)

  2664.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");

  2665.                 else

  2666.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");

  2667.             }

  2668.         }

  2669.         else

  2670.         {

  2671. #if ARCH_X86

  2672.             av_log(c, AV_LOG_VERBOSE, "using x86 asm scaler for horizontal scaling\n");

  2673. #else

  2674.             if (flags & SWS_FAST_BILINEAR)

  2675.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");

  2676.             else

  2677.                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");

  2678. #endif

  2679.         }

  2680.         if (isPlanarYUV(dstFormat))

  2681.         {

  2682.             if (c->vLumFilterSize==1)

  2683.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2684.             else

  2685.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2686.         }

  2687.         else

  2688.         {

  2689.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  2690.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  2691.                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2692.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  2693.                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2694.             else

  2695.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2696.         }

  2697. 

  2698.         if (dstFormat==PIX_FMT_BGR24)

  2699.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 converter\n",

  2700.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  2701.         else if (dstFormat==PIX_FMT_RGB32)

  2702.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2703.         else if (dstFormat==PIX_FMT_BGR565)

  2704.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2705.         else if (dstFormat==PIX_FMT_BGR555)

  2706.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2707. 

  2708.         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  2709.     }

  2710.     if (flags & SWS_PRINT_INFO)

  2711.     {

  2712.         av_log(c, AV_LOG_DEBUG, "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2713.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  2714.         av_log(c, AV_LOG_DEBUG, "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2715.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  2716.     }

  2717. 

  2718.     c->swScale= getSwsFunc(flags);

  2719.     return c;

  2720. }

  2721. 

  2722. /**

  2723.  * swscale wrapper, so we don't need to export the SwsContext.

  2724.  * Assumes planar YUV to be in YUV order instead of YVU.

  2725.  */

  2726. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2727.               int srcSliceH, uint8_t* dst[], int dstStride[]){

  2728.     int i;

  2729.     uint8_t* src2[4]= {src[0], src[1], src[2]};

  2730. 

  2731.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  2732.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  2733.         return 0;

  2734.     }

  2735.     if (c->sliceDir == 0) {

  2736.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  2737.     }

  2738. 

  2739.     if (usePal(c->srcFormat)){

  2740.         for (i=0; i<256; i++){

  2741.             int p, r, g, b,y,u,v;

  2742.             if(c->srcFormat == PIX_FMT_PAL8){

  2743.                 p=((uint32_t*)(src[1]))[i];

  2744.                 r= (p>>16)&0xFF;

  2745.                 g= (p>> 8)&0xFF;

  2746.                 b=  p     &0xFF;

  2747.             }else if(c->srcFormat == PIX_FMT_RGB8){

  2748.                 r= (i>>5    )*36;

  2749.                 g= ((i>>2)&7)*36;

  2750.                 b= (i&3     )*85;

  2751.             }else if(c->srcFormat == PIX_FMT_BGR8){

  2752.                 b= (i>>6    )*85;

  2753.                 g= ((i>>3)&7)*36;

  2754.                 r= (i&7     )*36;

  2755.             }else if(c->srcFormat == PIX_FMT_RGB4_BYTE){

  2756.                 r= (i>>3    )*255;

  2757.                 g= ((i>>1)&3)*85;

  2758.                 b= (i&1     )*255;

  2759.             }else {

  2760.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  2761.                 b= (i>>3    )*255;

  2762.                 g= ((i>>1)&3)*85;

  2763.                 r= (i&1     )*255;

  2764.             }

  2765.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2766.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2767.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2768.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  2769. 

  2770. 

  2771.             switch(c->dstFormat) {

  2772.             case PIX_FMT_BGR32:

  2773. #ifndef WORDS_BIGENDIAN

  2774.             case PIX_FMT_RGB24:

  2775. #endif

  2776.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  2777.                 break;

  2778.             case PIX_FMT_BGR32_1:

  2779. #ifdef  WORDS_BIGENDIAN

  2780.             case PIX_FMT_BGR24:

  2781. #endif

  2782.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  2783.                 break;

  2784.             case PIX_FMT_RGB32_1:

  2785. #ifdef  WORDS_BIGENDIAN

  2786.             case PIX_FMT_RGB24:

  2787. #endif

  2788.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  2789.                 break;

  2790.             case PIX_FMT_RGB32:

  2791. #ifndef WORDS_BIGENDIAN

  2792.             case PIX_FMT_BGR24:

  2793. #endif

  2794.             default:

  2795.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  2796.             }

  2797.         }

  2798.     }

  2799. 

  2800.     // copy strides, so they can safely be modified

  2801.     if (c->sliceDir == 1) {

  2802.         // slices go from top to bottom

  2803.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};

  2804.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};

  2805.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);

  2806.     } else {

  2807.         // slices go from bottom to top => we flip the image internally

  2808.         uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],

  2809.                            dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],

  2810.                            dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};

  2811.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};

  2812.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};

  2813. 

  2814.         src2[0] += (srcSliceH-1)*srcStride[0];

  2815.         if (!usePal(c->srcFormat))

  2816.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  2817.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  2818. 

  2819.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  2820.     }

  2821. }

  2822. 

  2823. /**

  2824.  * swscale wrapper, so we don't need to export the SwsContext.

  2825.  */

  2826. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2827.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  2828.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  2829. }

  2830. 

  2831. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  2832.                                 float lumaSharpen, float chromaSharpen,

  2833.                                 float chromaHShift, float chromaVShift,

  2834.                                 int verbose)

  2835. {

  2836.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  2837. 

  2838.     if (lumaGBlur!=0.0){

  2839.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  2840.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  2841.     }else{

  2842.         filter->lumH= sws_getIdentityVec();

  2843.         filter->lumV= sws_getIdentityVec();

  2844.     }

  2845. 

  2846.     if (chromaGBlur!=0.0){

  2847.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  2848.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  2849.     }else{

  2850.         filter->chrH= sws_getIdentityVec();

  2851.         filter->chrV= sws_getIdentityVec();

  2852.     }

  2853. 

  2854.     if (chromaSharpen!=0.0){

  2855.         SwsVector *id= sws_getIdentityVec();

  2856.         sws_scaleVec(filter->chrH, -chromaSharpen);

  2857.         sws_scaleVec(filter->chrV, -chromaSharpen);

  2858.         sws_addVec(filter->chrH, id);

  2859.         sws_addVec(filter->chrV, id);

  2860.         sws_freeVec(id);

  2861.     }

  2862. 

  2863.     if (lumaSharpen!=0.0){

  2864.         SwsVector *id= sws_getIdentityVec();

  2865.         sws_scaleVec(filter->lumH, -lumaSharpen);

  2866.         sws_scaleVec(filter->lumV, -lumaSharpen);

  2867.         sws_addVec(filter->lumH, id);

  2868.         sws_addVec(filter->lumV, id);

  2869.         sws_freeVec(id);

  2870.     }

  2871. 

  2872.     if (chromaHShift != 0.0)

  2873.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  2874. 

  2875.     if (chromaVShift != 0.0)

  2876.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  2877. 

  2878.     sws_normalizeVec(filter->chrH, 1.0);

  2879.     sws_normalizeVec(filter->chrV, 1.0);

  2880.     sws_normalizeVec(filter->lumH, 1.0);

  2881.     sws_normalizeVec(filter->lumV, 1.0);

  2882. 

  2883.     if (verbose) sws_printVec(filter->chrH);

  2884.     if (verbose) sws_printVec(filter->lumH);

  2885. 

  2886.     return filter;

  2887. }

  2888. 

  2889. /**

  2890.  * Returns a normalized Gaussian curve used to filter stuff

  2891.  * quality=3 is high quality, lower is lower quality.

  2892.  */

  2893. SwsVector *sws_getGaussianVec(double variance, double quality){

  2894.     const int length= (int)(variance*quality + 0.5) | 1;

  2895.     int i;

  2896.     double *coeff= av_malloc(length*sizeof(double));

  2897.     double middle= (length-1)*0.5;

  2898.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2899. 

  2900.     vec->coeff= coeff;

  2901.     vec->length= length;

  2902. 

  2903.     for (i=0; i<length; i++)

  2904.     {

  2905.         double dist= i-middle;

  2906.         coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);

  2907.     }

  2908. 

  2909.     sws_normalizeVec(vec, 1.0);

  2910. 

  2911.     return vec;

  2912. }

  2913. 

  2914. SwsVector *sws_getConstVec(double c, int length){

  2915.     int i;

  2916.     double *coeff= av_malloc(length*sizeof(double));

  2917.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2918. 

  2919.     vec->coeff= coeff;

  2920.     vec->length= length;

  2921. 

  2922.     for (i=0; i<length; i++)

  2923.         coeff[i]= c;

  2924. 

  2925.     return vec;

  2926. }

  2927. 

  2928. 

  2929. SwsVector *sws_getIdentityVec(void){

  2930.     return sws_getConstVec(1.0, 1);

  2931. }

  2932. 

  2933. double sws_dcVec(SwsVector *a){

  2934.     int i;

  2935.     double sum=0;

  2936. 

  2937.     for (i=0; i<a->length; i++)

  2938.         sum+= a->coeff[i];

  2939. 

  2940.     return sum;

  2941. }

  2942. 

  2943. void sws_scaleVec(SwsVector *a, double scalar){

  2944.     int i;

  2945. 

  2946.     for (i=0; i<a->length; i++)

  2947.         a->coeff[i]*= scalar;

  2948. }

  2949. 

  2950. void sws_normalizeVec(SwsVector *a, double height){

  2951.     sws_scaleVec(a, height/sws_dcVec(a));

  2952. }

  2953. 

  2954. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){

  2955.     int length= a->length + b->length - 1;

  2956.     double *coeff= av_malloc(length*sizeof(double));

  2957.     int i, j;

  2958.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2959. 

  2960.     vec->coeff= coeff;

  2961.     vec->length= length;

  2962. 

  2963.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2964. 

  2965.     for (i=0; i<a->length; i++)

  2966.     {

  2967.         for (j=0; j<b->length; j++)

  2968.         {

  2969.             coeff[i+j]+= a->coeff[i]*b->coeff[j];

  2970.         }

  2971.     }

  2972. 

  2973.     return vec;

  2974. }

  2975. 

  2976. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){

  2977.     int length= FFMAX(a->length, b->length);

  2978.     double *coeff= av_malloc(length*sizeof(double));

  2979.     int i;

  2980.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2981. 

  2982.     vec->coeff= coeff;

  2983.     vec->length= length;

  2984. 

  2985.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2986. 

  2987.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2988.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  2989. 

  2990.     return vec;

  2991. }

  2992. 

  2993. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){

  2994.     int length= FFMAX(a->length, b->length);

  2995.     double *coeff= av_malloc(length*sizeof(double));

  2996.     int i;

  2997.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2998. 

  2999.     vec->coeff= coeff;

  3000.     vec->length= length;

  3001. 

  3002.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3003. 

  3004.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3005.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  3006. 

  3007.     return vec;

  3008. }

  3009. 

  3010. /* shift left / or right if "shift" is negative */

  3011. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){

  3012.     int length= a->length + FFABS(shift)*2;

  3013.     double *coeff= av_malloc(length*sizeof(double));

  3014.     int i;

  3015.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3016. 

  3017.     vec->coeff= coeff;

  3018.     vec->length= length;

  3019. 

  3020.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3021. 

  3022.     for (i=0; i<a->length; i++)

  3023.     {

  3024.         coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  3025.     }

  3026. 

  3027.     return vec;

  3028. }

  3029. 

  3030. void sws_shiftVec(SwsVector *a, int shift){

  3031.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  3032.     av_free(a->coeff);

  3033.     a->coeff= shifted->coeff;

  3034.     a->length= shifted->length;

  3035.     av_free(shifted);

  3036. }

  3037. 

  3038. void sws_addVec(SwsVector *a, SwsVector *b){

  3039.     SwsVector *sum= sws_sumVec(a, b);

  3040.     av_free(a->coeff);

  3041.     a->coeff= sum->coeff;

  3042.     a->length= sum->length;

  3043.     av_free(sum);

  3044. }

  3045. 

  3046. void sws_subVec(SwsVector *a, SwsVector *b){

  3047.     SwsVector *diff= sws_diffVec(a, b);

  3048.     av_free(a->coeff);

  3049.     a->coeff= diff->coeff;

  3050.     a->length= diff->length;

  3051.     av_free(diff);

  3052. }

  3053. 

  3054. void sws_convVec(SwsVector *a, SwsVector *b){

  3055.     SwsVector *conv= sws_getConvVec(a, b);

  3056.     av_free(a->coeff);

  3057.     a->coeff= conv->coeff;

  3058.     a->length= conv->length;

  3059.     av_free(conv);

  3060. }

  3061. 

  3062. SwsVector *sws_cloneVec(SwsVector *a){

  3063.     double *coeff= av_malloc(a->length*sizeof(double));

  3064.     int i;

  3065.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3066. 

  3067.     vec->coeff= coeff;

  3068.     vec->length= a->length;

  3069. 

  3070.     for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];

  3071. 

  3072.     return vec;

  3073. }

  3074. 

  3075. void sws_printVec(SwsVector *a){

  3076.     int i;

  3077.     double max=0;

  3078.     double min=0;

  3079.     double range;

  3080. 

  3081.     for (i=0; i<a->length; i++)

  3082.         if (a->coeff[i]>max) max= a->coeff[i];

  3083. 

  3084.     for (i=0; i<a->length; i++)

  3085.         if (a->coeff[i]<min) min= a->coeff[i];

  3086. 

  3087.     range= max - min;

  3088. 

  3089.     for (i=0; i<a->length; i++)

  3090.     {

  3091.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  3092.         av_log(NULL, AV_LOG_DEBUG, "%1.3f ", a->coeff[i]);

  3093.         for (;x>0; x--) av_log(NULL, AV_LOG_DEBUG, " ");

  3094.         av_log(NULL, AV_LOG_DEBUG, "|\n");

  3095.     }

  3096. }

  3097. 

  3098. void sws_freeVec(SwsVector *a){

  3099.     if (!a) return;

  3100.     av_freep(&a->coeff);

  3101.     a->length=0;

  3102.     av_free(a);

  3103. }

  3104. 

  3105. void sws_freeFilter(SwsFilter *filter){

  3106.     if (!filter) return;

  3107. 

  3108.     if (filter->lumH) sws_freeVec(filter->lumH);

  3109.     if (filter->lumV) sws_freeVec(filter->lumV);

  3110.     if (filter->chrH) sws_freeVec(filter->chrH);

  3111.     if (filter->chrV) sws_freeVec(filter->chrV);

  3112.     av_free(filter);

  3113. }

  3114. 

  3115. 

  3116. void sws_freeContext(SwsContext *c){

  3117.     int i;

  3118.     if (!c) return;

  3119. 

  3120.     if (c->lumPixBuf)

  3121.     {

  3122.         for (i=0; i<c->vLumBufSize; i++)

  3123.             av_freep(&c->lumPixBuf[i]);

  3124.         av_freep(&c->lumPixBuf);

  3125.     }

  3126. 

  3127.     if (c->chrPixBuf)

  3128.     {

  3129.         for (i=0; i<c->vChrBufSize; i++)

  3130.             av_freep(&c->chrPixBuf[i]);

  3131.         av_freep(&c->chrPixBuf);

  3132.     }

  3133. 

  3134.     av_freep(&c->vLumFilter);

  3135.     av_freep(&c->vChrFilter);

  3136.     av_freep(&c->hLumFilter);

  3137.     av_freep(&c->hChrFilter);

  3138. #if HAVE_ALTIVEC

  3139.     av_freep(&c->vYCoeffsBank);

  3140.     av_freep(&c->vCCoeffsBank);

  3141. #endif

  3142. 

  3143.     av_freep(&c->vLumFilterPos);

  3144.     av_freep(&c->vChrFilterPos);

  3145.     av_freep(&c->hLumFilterPos);

  3146.     av_freep(&c->hChrFilterPos);

  3147. 

  3148. #if ARCH_X86 && CONFIG_GPL

  3149. #ifdef MAP_ANONYMOUS

  3150.     if (c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);

  3151.     if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);

  3152. #else

  3153.     av_free(c->funnyYCode);

  3154.     av_free(c->funnyUVCode);

  3155. #endif

  3156.     c->funnyYCode=NULL;

  3157.     c->funnyUVCode=NULL;

  3158. #endif /* ARCH_X86 && CONFIG_GPL */

  3159. 

  3160.     av_freep(&c->lumMmx2Filter);

  3161.     av_freep(&c->chrMmx2Filter);

  3162.     av_freep(&c->lumMmx2FilterPos);

  3163.     av_freep(&c->chrMmx2FilterPos);

  3164.     av_freep(&c->yuvTable);

  3165. 

  3166.     av_free(c);

  3167. }

  3168. 

  3169. /**

  3170.  * Checks if context is valid or reallocs a new one instead.

  3171.  * If context is NULL, just calls sws_getContext() to get a new one.

  3172.  * Otherwise, checks if the parameters are the ones already saved in context.

  3173.  * If that is the case, returns the current context.

  3174.  * Otherwise, frees context and gets a new one.

  3175.  *

  3176.  * Be warned that srcFilter, dstFilter are not checked, they are

  3177.  * asumed to remain valid.

  3178.  */

  3179. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  3180.                                         int srcW, int srcH, enum PixelFormat srcFormat,

  3181.                                         int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  3182.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)

  3183. {

  3184.     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};

  3185. 

  3186.     if (!param)

  3187.         param = default_param;

  3188. 

  3189.     if (context) {

  3190.         if (context->srcW != srcW || context->srcH != srcH ||

  3191.             context->srcFormat != srcFormat ||

  3192.             context->dstW != dstW || context->dstH != dstH ||

  3193.             context->dstFormat != dstFormat || context->flags != flags ||

  3194.             context->param[0] != param[0] || context->param[1] != param[1])

  3195.         {

  3196.             sws_freeContext(context);

  3197.             context = NULL;

  3198.         }

  3199.     }

  3200.     if (!context) {

  3201.         return sws_getContext(srcW, srcH, srcFormat,

  3202.                               dstW, dstH, dstFormat, flags,

  3203.                               srcFilter, dstFilter, param);

  3204.     }

  3205.     return context;

  3206. }