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FFmpeg/libswscale/swscale.c

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  1. /*

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

  3.  *

  4.  * This file is part of FFmpeg.

  5.  *

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

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

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

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

  10.  *

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

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

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

  14.  * GNU General Public License for more details.

  15.  *

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

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

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

  19.  *

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

  21.  * under the LGPL license too

  22.  */

  23. 

  24. /*

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

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

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

  28. 

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

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

  31.   x -> x

  32.   YUV9 -> YV12

  33.   YUV9/YV12 -> Y800

  34.   Y800 -> YUV9/YV12

  35.   BGR24 -> BGR32 & RGB24 -> RGB32

  36.   BGR32 -> BGR24 & RGB32 -> RGB24

  37.   BGR15 -> BGR16

  38. */

  39. 

  40. /*

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

  42.  YV12 -> BGR16

  43.  YV12 -> YV12

  44.  BGR15 -> BGR16

  45.  BGR16 -> BGR16

  46.  YVU9 -> YV12

  47. 

  48. untested special converters

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

  50.   YV12/I420 -> YV12/I420

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

  52.   BGR24 -> BGR32 & RGB24 -> RGB32

  53.   BGR32 -> BGR24 & RGB32 -> RGB24

  54.   BGR24 -> YV12

  55. */

  56. 

  57. #define _SVID_SOURCE //needed for MAP_ANONYMOUS

  58. #include <inttypes.h>

  59. #include <string.h>

  60. #include <math.h>

  61. #include <stdio.h>

  62. #include <unistd.h>

  63. #include "config.h"

  64. #include <assert.h>

  65. #ifdef HAVE_SYS_MMAN_H

  66. #include <sys/mman.h>

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

  68. #define MAP_ANONYMOUS MAP_ANON

  69. #endif

  70. #endif

  71. #include "swscale.h"

  72. #include "swscale_internal.h"

  73. #include "rgb2rgb.h"

  74. #include "libavutil/x86_cpu.h"

  75. #include "libavutil/bswap.h"

  76. 

  77. unsigned swscale_version(void)

  78. {

  79.     return LIBSWSCALE_VERSION_INT;

  80. }

  81. 

  82. #undef MOVNTQ

  83. #undef PAVGB

  84. 

  85. //#undef HAVE_MMX2

  86. //#define HAVE_3DNOW

  87. //#undef HAVE_MMX

  88. //#undef ARCH_X86

  89. //#define WORDS_BIGENDIAN

  90. #define DITHER1XBPP

  91. 

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

  93. 

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

  95. 

  96. #ifdef M_PI

  97. #define PI M_PI

  98. #else

  99. #define PI 3.14159265358979323846

  100. #endif

  101. 

  102. #define isSupportedIn(x)    (       \

  103.            (x)==PIX_FMT_YUV420P     \

  104.         || (x)==PIX_FMT_YUVA420P    \

  105.         || (x)==PIX_FMT_YUYV422     \

  106.         || (x)==PIX_FMT_UYVY422     \

  107.         || (x)==PIX_FMT_RGB32       \

  108.         || (x)==PIX_FMT_RGB32_1     \

  109.         || (x)==PIX_FMT_BGR24       \

  110.         || (x)==PIX_FMT_BGR565      \

  111.         || (x)==PIX_FMT_BGR555      \

  112.         || (x)==PIX_FMT_BGR32       \

  113.         || (x)==PIX_FMT_BGR32_1     \

  114.         || (x)==PIX_FMT_RGB24       \

  115.         || (x)==PIX_FMT_RGB565      \

  116.         || (x)==PIX_FMT_RGB555      \

  117.         || (x)==PIX_FMT_GRAY8       \

  118.         || (x)==PIX_FMT_YUV410P     \

  119.         || (x)==PIX_FMT_YUV440P     \

  120.         || (x)==PIX_FMT_GRAY16BE    \

  121.         || (x)==PIX_FMT_GRAY16LE    \

  122.         || (x)==PIX_FMT_YUV444P     \

  123.         || (x)==PIX_FMT_YUV422P     \

  124.         || (x)==PIX_FMT_YUV411P     \

  125.         || (x)==PIX_FMT_PAL8        \

  126.         || (x)==PIX_FMT_BGR8        \

  127.         || (x)==PIX_FMT_RGB8        \

  128.         || (x)==PIX_FMT_BGR4_BYTE   \

  129.         || (x)==PIX_FMT_RGB4_BYTE   \

  130.         || (x)==PIX_FMT_YUV440P     \

  131.         || (x)==PIX_FMT_MONOWHITE   \

  132.         || (x)==PIX_FMT_MONOBLACK   \

  133.     )

  134. #define isSupportedOut(x)   (       \

  135.            (x)==PIX_FMT_YUV420P     \

  136.         || (x)==PIX_FMT_YUYV422     \

  137.         || (x)==PIX_FMT_UYVY422     \

  138.         || (x)==PIX_FMT_YUV444P     \

  139.         || (x)==PIX_FMT_YUV422P     \

  140.         || (x)==PIX_FMT_YUV411P     \

  141.         || isRGB(x)                 \

  142.         || isBGR(x)                 \

  143.         || (x)==PIX_FMT_NV12        \

  144.         || (x)==PIX_FMT_NV21        \

  145.         || (x)==PIX_FMT_GRAY16BE    \

  146.         || (x)==PIX_FMT_GRAY16LE    \

  147.         || (x)==PIX_FMT_GRAY8       \

  148.         || (x)==PIX_FMT_YUV410P     \

  149.         || (x)==PIX_FMT_YUV440P     \

  150.     )

  151. #define isPacked(x)         (       \

  152.            (x)==PIX_FMT_PAL8        \

  153.         || (x)==PIX_FMT_YUYV422     \

  154.         || (x)==PIX_FMT_UYVY422     \

  155.         || isRGB(x)                 \

  156.         || isBGR(x)                 \

  157.     )

  158. #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 defined(ARCH_X86) && defined (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 /* defined(ARCH_X86) */

  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.         default:

  458.             return "Unknown format";

  459.     }

  460. }

  461. 

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

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

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

  465. {

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

  467.     int i;

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

  469.     {

  470.         int val=1<<18;

  471.         int j;

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

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

  474. 

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

  476.     }

  477. 

  478.     if (uDest)

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

  480.         {

  481.             int u=1<<18;

  482.             int v=1<<18;

  483.             int j;

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

  485.             {

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

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

  488.             }

  489. 

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

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

  492.         }

  493. }

  494. 

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

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

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

  498. {

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

  500.     int i;

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

  502.     {

  503.         int val=1<<18;

  504.         int j;

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

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

  507. 

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

  509.     }

  510. 

  511.     if (!uDest)

  512.         return;

  513. 

  514.     if (dstFormat == PIX_FMT_NV12)

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

  516.         {

  517.             int u=1<<18;

  518.             int v=1<<18;

  519.             int j;

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

  521.             {

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

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

  524.             }

  525. 

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

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

  528.         }

  529.     else

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

  531.         {

  532.             int u=1<<18;

  533.             int v=1<<18;

  534.             int j;

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

  536.             {

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

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

  539.             }

  540. 

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

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

  543.         }

  544. }

  545. 

  546. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type) \

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

  548.         int j;\

  549.         int Y1 = 1<<18;\

  550.         int Y2 = 1<<18;\

  551.         int U  = 1<<18;\

  552.         int V  = 1<<18;\

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

  554.         const int i2= 2*i;\

  555.         \

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

  557.         {\

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

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

  560.         }\

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

  562.         {\

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

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

  565.         }\

  566.         Y1>>=19;\

  567.         Y2>>=19;\

  568.         U >>=19;\

  569.         V >>=19;\

  570. 

  571. #define YSCALE_YUV_2_PACKEDX_C(type) \

  572.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type)\

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

  574.         {\

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

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

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

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

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

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

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

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

  583.         }

  584. 

  585. #define YSCALE_YUV_2_PACKEDX_FULL_C \

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

  587.         int j;\

  588.         int Y = 0;\

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

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

  591.         int R,G,B;\

  592.         \

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

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

  595.         }\

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

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

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

  599.         }\

  600.         Y >>=10;\

  601.         U >>=10;\

  602.         V >>=10;\

  603. 

  604. #define YSCALE_YUV_2_RGBX_FULL_C(rnd) \

  605.     YSCALE_YUV_2_PACKEDX_FULL_C\

  606.         Y-= c->yuv2rgb_y_offset;\

  607.         Y*= c->yuv2rgb_y_coeff;\

  608.         Y+= rnd;\

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

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

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

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

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

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

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

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

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

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

  619.         }\

  620. 

  621. 

  622. #define YSCALE_YUV_2_GRAY16_C \

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

  624.         int j;\

  625.         int Y1 = 1<<18;\

  626.         int Y2 = 1<<18;\

  627.         int U  = 1<<18;\

  628.         int V  = 1<<18;\

  629.         \

  630.         const int i2= 2*i;\

  631.         \

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

  633.         {\

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

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

  636.         }\

  637.         Y1>>=11;\

  638.         Y2>>=11;\

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

  640.         {\

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

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

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

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

  645.         }

  646. 

  647. #define YSCALE_YUV_2_RGBX_C(type) \

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

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

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

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

  652. 

  653. #define YSCALE_YUV_2_PACKED2_C   \

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

  655.         const int i2= 2*i;       \

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

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

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

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

  660. 

  661. #define YSCALE_YUV_2_GRAY16_2_C   \

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

  663.         const int i2= 2*i;       \

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

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

  666. 

  667. #define YSCALE_YUV_2_RGB2_C(type) \

  668.     YSCALE_YUV_2_PACKED2_C\

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

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

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

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

  673. 

  674. #define YSCALE_YUV_2_PACKED1_C \

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

  676.         const int i2= 2*i;\

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

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

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

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

  681. 

  682. #define YSCALE_YUV_2_GRAY16_1_C \

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

  684.         const int i2= 2*i;\

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

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

  687. 

  688. #define YSCALE_YUV_2_RGB1_C(type) \

  689.     YSCALE_YUV_2_PACKED1_C\

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

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

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

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

  694. 

  695. #define YSCALE_YUV_2_PACKED1B_C \

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

  697.         const int i2= 2*i;\

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

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

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

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

  702. 

  703. #define YSCALE_YUV_2_RGB1B_C(type) \

  704.     YSCALE_YUV_2_PACKED1B_C\

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

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

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

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

  709. 

  710. #define YSCALE_YUV_2_MONO2_C \

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

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

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

  714.         int acc;\

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

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

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

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

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

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

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

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

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

  724.         dest++;\

  725.     }\

  726. 

  727. 

  728. #define YSCALE_YUV_2_MONOX_C \

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

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

  731.     int acc=0;\

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

  733.         int j;\

  734.         int Y1=1<<18;\

  735.         int Y2=1<<18;\

  736. \

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

  738.         {\

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

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

  741.         }\

  742.         Y1>>=19;\

  743.         Y2>>=19;\

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

  745.         {\

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

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

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

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

  750.         }\

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

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

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

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

  755.             dest++;\

  756.         }\

  757.     }

  758. 

  759. 

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

  761.     switch(c->dstFormat)\

  762.     {\

  763.     case PIX_FMT_RGB32:\

  764.     case PIX_FMT_BGR32:\

  765.     case PIX_FMT_RGB32_1:\

  766.     case PIX_FMT_BGR32_1:\

  767.         func(uint32_t)\

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

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

  770.         }                \

  771.         break;\

  772.     case PIX_FMT_RGB24:\

  773.         func(uint8_t)\

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

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

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

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

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

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

  780.             dest+=6;\

  781.         }\

  782.         break;\

  783.     case PIX_FMT_BGR24:\

  784.         func(uint8_t)\

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

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

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

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

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

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

  791.             dest+=6;\

  792.         }\

  793.         break;\

  794.     case PIX_FMT_RGB565:\

  795.     case PIX_FMT_BGR565:\

  796.         {\

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

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

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

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

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

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

  803.             func(uint16_t)\

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

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

  806.             }\

  807.         }\

  808.         break;\

  809.     case PIX_FMT_RGB555:\

  810.     case PIX_FMT_BGR555:\

  811.         {\

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

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

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

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

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

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

  818.             func(uint16_t)\

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

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

  821.             }\

  822.         }\

  823.         break;\

  824.     case PIX_FMT_RGB8:\

  825.     case PIX_FMT_BGR8:\

  826.         {\

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

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

  829.             func(uint8_t)\

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

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

  832.             }\

  833.         }\

  834.         break;\

  835.     case PIX_FMT_RGB4:\

  836.     case PIX_FMT_BGR4:\

  837.         {\

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

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

  840.             func(uint8_t)\

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

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

  843.             }\

  844.         }\

  845.         break;\

  846.     case PIX_FMT_RGB4_BYTE:\

  847.     case PIX_FMT_BGR4_BYTE:\

  848.         {\

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

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

  851.             func(uint8_t)\

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

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

  854.             }\

  855.         }\

  856.         break;\

  857.     case PIX_FMT_MONOBLACK:\

  858.     case PIX_FMT_MONOWHITE:\

  859.         {\

  860.             func_monoblack\

  861.         }\

  862.         break;\

  863.     case PIX_FMT_YUYV422:\

  864.         func2\

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

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

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

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

  869.         }                \

  870.         break;\

  871.     case PIX_FMT_UYVY422:\

  872.         func2\

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

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

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

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

  877.         }                \

  878.         break;\

  879.     case PIX_FMT_GRAY16BE:\

  880.         func_g16\

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

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

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

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

  885.         }                \

  886.         break;\

  887.     case PIX_FMT_GRAY16LE:\

  888.         func_g16\

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

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

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

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

  893.         }                \

  894.         break;\

  895.     }\

  896. 

  897. 

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

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

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

  901. {

  902.     int i;

  903.     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)

  904. }

  905. 

  906. static inline void yuv2rgbXinC_full(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.     int step= fmt_depth(c->dstFormat)/8;

  912.     int aidx= 3;

  913. 

  914.     switch(c->dstFormat){

  915.     case PIX_FMT_ARGB:

  916.         dest++;

  917.         aidx= 0;

  918.     case PIX_FMT_RGB24:

  919.         aidx--;

  920.     case PIX_FMT_RGBA:

  921.         YSCALE_YUV_2_RGBX_FULL_C(1<<21)

  922.             dest[aidx]= 0;

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

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

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

  926.             dest+= step;

  927.         }

  928.         break;

  929.     case PIX_FMT_ABGR:

  930.         dest++;

  931.         aidx= 0;

  932.     case PIX_FMT_BGR24:

  933.         aidx--;

  934.     case PIX_FMT_BGRA:

  935.         YSCALE_YUV_2_RGBX_FULL_C(1<<21)

  936.             dest[aidx]= 0;

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

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

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

  940.             dest+= step;

  941.         }

  942.         break;

  943.     default:

  944.         assert(0);

  945.     }

  946. }

  947. 

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

  949. //Plain C versions

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

  951. #define COMPILE_C

  952. #endif

  953. 

  954. #ifdef ARCH_PPC

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

  956. #define COMPILE_ALTIVEC

  957. #endif //HAVE_ALTIVEC

  958. #endif //ARCH_PPC

  959. 

  960. #if defined(ARCH_X86)

  961. 

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

  963. #define COMPILE_MMX

  964. #endif

  965. 

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

  967. #define COMPILE_MMX2

  968. #endif

  969. 

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

  971. #define COMPILE_3DNOW

  972. #endif

  973. #endif //ARCH_X86 || ARCH_X86_64

  974. 

  975. #undef HAVE_MMX

  976. #undef HAVE_MMX2

  977. #undef HAVE_3DNOW

  978. 

  979. #ifdef COMPILE_C

  980. #undef HAVE_MMX

  981. #undef HAVE_MMX2

  982. #undef HAVE_3DNOW

  983. #undef HAVE_ALTIVEC

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

  985. #include "swscale_template.c"

  986. #endif

  987. 

  988. #ifdef COMPILE_ALTIVEC

  989. #undef RENAME

  990. #define HAVE_ALTIVEC

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

  992. #include "swscale_template.c"

  993. #endif

  994. 

  995. #if defined(ARCH_X86)

  996. 

  997. //X86 versions

  998. /*

  999. #undef RENAME

  1000. #undef HAVE_MMX

  1001. #undef HAVE_MMX2

  1002. #undef HAVE_3DNOW

  1003. #define ARCH_X86

  1004. #define RENAME(a) a ## _X86

  1005. #include "swscale_template.c"

  1006. */

  1007. //MMX versions

  1008. #ifdef COMPILE_MMX

  1009. #undef RENAME

  1010. #define HAVE_MMX

  1011. #undef HAVE_MMX2

  1012. #undef HAVE_3DNOW

  1013. #define RENAME(a) a ## _MMX

  1014. #include "swscale_template.c"

  1015. #endif

  1016. 

  1017. //MMX2 versions

  1018. #ifdef COMPILE_MMX2

  1019. #undef RENAME

  1020. #define HAVE_MMX

  1021. #define HAVE_MMX2

  1022. #undef HAVE_3DNOW

  1023. #define RENAME(a) a ## _MMX2

  1024. #include "swscale_template.c"

  1025. #endif

  1026. 

  1027. //3DNOW versions

  1028. #ifdef COMPILE_3DNOW

  1029. #undef RENAME

  1030. #define HAVE_MMX

  1031. #undef HAVE_MMX2

  1032. #define HAVE_3DNOW

  1033. #define RENAME(a) a ## _3DNow

  1034. #include "swscale_template.c"

  1035. #endif

  1036. 

  1037. #endif //ARCH_X86 || ARCH_X86_64

  1038. 

  1039. // minor note: the HAVE_xyz is messed up after that line so don't use it

  1040. 

  1041. static double getSplineCoeff(double a, double b, double c, double d, double dist)

  1042. {

  1043. //    printf("%f %f %f %f %f\n", a,b,c,d,dist);

  1044.     if (dist<=1.0)      return ((d*dist + c)*dist + b)*dist +a;

  1045.     else                return getSplineCoeff(        0.0,

  1046.                                              b+ 2.0*c + 3.0*d,

  1047.                                                     c + 3.0*d,

  1048.                                             -b- 3.0*c - 6.0*d,

  1049.                                             dist-1.0);

  1050. }

  1051. 

  1052. static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,

  1053.                              int srcW, int dstW, int filterAlign, int one, int flags,

  1054.                              SwsVector *srcFilter, SwsVector *dstFilter, double param[2])

  1055. {

  1056.     int i;

  1057.     int filterSize;

  1058.     int filter2Size;

  1059.     int minFilterSize;

  1060.     int64_t *filter=NULL;

  1061.     int64_t *filter2=NULL;

  1062.     const int64_t fone= 1LL<<54;

  1063.     int ret= -1;

  1064. #if defined(ARCH_X86)

  1065.     if (flags & SWS_CPU_CAPS_MMX)

  1066.         __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)

  1067. #endif

  1068. 

  1069.     // Note the +1 is for the MMXscaler which reads over the end

  1070.     *filterPos = av_malloc((dstW+1)*sizeof(int16_t));

  1071. 

  1072.     if (FFABS(xInc - 0x10000) <10) // unscaled

  1073.     {

  1074.         int i;

  1075.         filterSize= 1;

  1076.         filter= av_mallocz(dstW*sizeof(*filter)*filterSize);

  1077. 

  1078.         for (i=0; i<dstW; i++)

  1079.         {

  1080.             filter[i*filterSize]= fone;

  1081.             (*filterPos)[i]=i;

  1082.         }

  1083. 

  1084.     }

  1085.     else if (flags&SWS_POINT) // lame looking point sampling mode

  1086.     {

  1087.         int i;

  1088.         int xDstInSrc;

  1089.         filterSize= 1;

  1090.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1091. 

  1092.         xDstInSrc= xInc/2 - 0x8000;

  1093.         for (i=0; i<dstW; i++)

  1094.         {

  1095.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1096. 

  1097.             (*filterPos)[i]= xx;

  1098.             filter[i]= fone;

  1099.             xDstInSrc+= xInc;

  1100.         }

  1101.     }

  1102.     else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale

  1103.     {

  1104.         int i;

  1105.         int xDstInSrc;

  1106.         if      (flags&SWS_BICUBIC) filterSize= 4;

  1107.         else if (flags&SWS_X      ) filterSize= 4;

  1108.         else                        filterSize= 2; // SWS_BILINEAR / SWS_AREA

  1109.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1110. 

  1111.         xDstInSrc= xInc/2 - 0x8000;

  1112.         for (i=0; i<dstW; i++)

  1113.         {

  1114.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1115.             int j;

  1116. 

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

  1118.                 //Bilinear upscale / linear interpolate / Area averaging

  1119.                 for (j=0; j<filterSize; j++)

  1120.                 {

  1121.                     int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);

  1122.                     if (coeff<0) coeff=0;

  1123.                     filter[i*filterSize + j]= coeff;

  1124.                     xx++;

  1125.                 }

  1126.             xDstInSrc+= xInc;

  1127.         }

  1128.     }

  1129.     else

  1130.     {

  1131.         int xDstInSrc;

  1132.         int sizeFactor;

  1133. 

  1134.         if      (flags&SWS_BICUBIC)      sizeFactor=  4;

  1135.         else if (flags&SWS_X)            sizeFactor=  8;

  1136.         else if (flags&SWS_AREA)         sizeFactor=  1; //downscale only, for upscale it is bilinear

  1137.         else if (flags&SWS_GAUSS)        sizeFactor=  8;   // infinite ;)

  1138.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;

  1139.         else if (flags&SWS_SINC)         sizeFactor= 20; // infinite ;)

  1140.         else if (flags&SWS_SPLINE)       sizeFactor= 20;  // infinite ;)

  1141.         else if (flags&SWS_BILINEAR)     sizeFactor=  2;

  1142.         else {

  1143.             sizeFactor= 0; //GCC warning killer

  1144.             assert(0);

  1145.         }

  1146. 

  1147.         if (xInc <= 1<<16)      filterSize= 1 + sizeFactor; // upscale

  1148.         else                    filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;

  1149. 

  1150.         if (filterSize > srcW-2) filterSize=srcW-2;

  1151. 

  1152.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1153. 

  1154.         xDstInSrc= xInc - 0x10000;

  1155.         for (i=0; i<dstW; i++)

  1156.         {

  1157.             int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);

  1158.             int j;

  1159.             (*filterPos)[i]= xx;

  1160.             for (j=0; j<filterSize; j++)

  1161.             {

  1162.                 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;

  1163.                 double floatd;

  1164.                 int64_t coeff;

  1165. 

  1166.                 if (xInc > 1<<16)

  1167.                     d= d*dstW/srcW;

  1168.                 floatd= d * (1.0/(1<<30));

  1169. 

  1170.                 if (flags & SWS_BICUBIC)

  1171.                 {

  1172.                     int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] :   0) * (1<<24);

  1173.                     int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);

  1174.                     int64_t dd = ( d*d)>>30;

  1175.                     int64_t ddd= (dd*d)>>30;

  1176. 

  1177.                     if      (d < 1LL<<30)

  1178.                         coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);

  1179.                     else if (d < 1LL<<31)

  1180.                         coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);

  1181.                     else

  1182.                         coeff=0.0;

  1183.                     coeff *= fone>>(30+24);

  1184.                 }

  1185. /*                else if (flags & SWS_X)

  1186.                 {

  1187.                     double p= param ? param*0.01 : 0.3;

  1188.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1189.                     coeff*= pow(2.0, - p*d*d);

  1190.                 }*/

  1191.                 else if (flags & SWS_X)

  1192.                 {

  1193.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1194.                     double c;

  1195. 

  1196.                     if (floatd<1.0)

  1197.                         c = cos(floatd*PI);

  1198.                     else

  1199.                         c=-1.0;

  1200.                     if (c<0.0)      c= -pow(-c, A);

  1201.                     else            c=  pow( c, A);

  1202.                     coeff= (c*0.5 + 0.5)*fone;

  1203.                 }

  1204.                 else if (flags & SWS_AREA)

  1205.                 {

  1206.                     int64_t d2= d - (1<<29);

  1207.                     if      (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));

  1208.                     else if (d2*xInc <  (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));

  1209.                     else coeff=0.0;

  1210.                     coeff *= fone>>(30+16);

  1211.                 }

  1212.                 else if (flags & SWS_GAUSS)

  1213.                 {

  1214.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1215.                     coeff = (pow(2.0, - p*floatd*floatd))*fone;

  1216.                 }

  1217.                 else if (flags & SWS_SINC)

  1218.                 {

  1219.                     coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;

  1220.                 }

  1221.                 else if (flags & SWS_LANCZOS)

  1222.                 {

  1223.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1224.                     coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;

  1225.                     if (floatd>p) coeff=0;

  1226.                 }

  1227.                 else if (flags & SWS_BILINEAR)

  1228.                 {

  1229.                     coeff= (1<<30) - d;

  1230.                     if (coeff<0) coeff=0;

  1231.                     coeff *= fone >> 30;

  1232.                 }

  1233.                 else if (flags & SWS_SPLINE)

  1234.                 {

  1235.                     double p=-2.196152422706632;

  1236.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;

  1237.                 }

  1238.                 else {

  1239.                     coeff= 0.0; //GCC warning killer

  1240.                     assert(0);

  1241.                 }

  1242. 

  1243.                 filter[i*filterSize + j]= coeff;

  1244.                 xx++;

  1245.             }

  1246.             xDstInSrc+= 2*xInc;

  1247.         }

  1248.     }

  1249. 

  1250.     /* apply src & dst Filter to filter -> filter2

  1251.        av_free(filter);

  1252.     */

  1253.     assert(filterSize>0);

  1254.     filter2Size= filterSize;

  1255.     if (srcFilter) filter2Size+= srcFilter->length - 1;

  1256.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1257.     assert(filter2Size>0);

  1258.     filter2= av_mallocz(filter2Size*dstW*sizeof(*filter2));

  1259. 

  1260.     for (i=0; i<dstW; i++)

  1261.     {

  1262.         int j, k;

  1263. 

  1264.         if(srcFilter){

  1265.             for (k=0; k<srcFilter->length; k++){

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

  1267.                     filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];

  1268.             }

  1269.         }else{

  1270.             for (j=0; j<filterSize; j++)

  1271.                 filter2[i*filter2Size + j]= filter[i*filterSize + j];

  1272.         }

  1273.         //FIXME dstFilter

  1274. 

  1275.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1276.     }

  1277.     av_freep(&filter);

  1278. 

  1279.     /* try to reduce the filter-size (step1 find size and shift left) */

  1280.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1281.     minFilterSize= 0;

  1282.     for (i=dstW-1; i>=0; i--)

  1283.     {

  1284.         int min= filter2Size;

  1285.         int j;

  1286.         int64_t cutOff=0.0;

  1287. 

  1288.         /* get rid off near zero elements on the left by shifting left */

  1289.         for (j=0; j<filter2Size; j++)

  1290.         {

  1291.             int k;

  1292.             cutOff += FFABS(filter2[i*filter2Size]);

  1293. 

  1294.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1295. 

  1296.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1297.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1298. 

  1299.             // Move filter coeffs left

  1300.             for (k=1; k<filter2Size; k++)

  1301.                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1302.             filter2[i*filter2Size + k - 1]= 0;

  1303.             (*filterPos)[i]++;

  1304.         }

  1305. 

  1306.         cutOff=0;

  1307.         /* count near zeros on the right */

  1308.         for (j=filter2Size-1; j>0; j--)

  1309.         {

  1310.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1311. 

  1312.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1313.             min--;

  1314.         }

  1315. 

  1316.         if (min>minFilterSize) minFilterSize= min;

  1317.     }

  1318. 

  1319.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1320.         // we can handle the special case 4,

  1321.         // so we don't want to go to the full 8

  1322.         if (minFilterSize < 5)

  1323.             filterAlign = 4;

  1324. 

  1325.         // we really don't want to waste our time

  1326.         // doing useless computation, so fall-back on

  1327.         // the scalar C code for very small filter.

  1328.         // vectorizing is worth it only if you have

  1329.         // decent-sized vector.

  1330.         if (minFilterSize < 3)

  1331.             filterAlign = 1;

  1332.     }

  1333. 

  1334.     if (flags & SWS_CPU_CAPS_MMX) {

  1335.         // special case for unscaled vertical filtering

  1336.         if (minFilterSize == 1 && filterAlign == 2)

  1337.             filterAlign= 1;

  1338.     }

  1339. 

  1340.     assert(minFilterSize > 0);

  1341.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1342.     assert(filterSize > 0);

  1343.     filter= av_malloc(filterSize*dstW*sizeof(*filter));

  1344.     if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)

  1345.         goto error;

  1346.     *outFilterSize= filterSize;

  1347. 

  1348.     if (flags&SWS_PRINT_INFO)

  1349.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1350.     /* try to reduce the filter-size (step2 reduce it) */

  1351.     for (i=0; i<dstW; i++)

  1352.     {

  1353.         int j;

  1354. 

  1355.         for (j=0; j<filterSize; j++)

  1356.         {

  1357.             if (j>=filter2Size) filter[i*filterSize + j]= 0;

  1358.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1359.             if((flags & SWS_BITEXACT) && j>=minFilterSize)

  1360.                 filter[i*filterSize + j]= 0;

  1361.         }

  1362.     }

  1363. 

  1364. 

  1365.     //FIXME try to align filterpos if possible

  1366. 

  1367.     //fix borders

  1368.     for (i=0; i<dstW; i++)

  1369.     {

  1370.         int j;

  1371.         if ((*filterPos)[i] < 0)

  1372.         {

  1373.             // Move filter coeffs left to compensate for filterPos

  1374.             for (j=1; j<filterSize; j++)

  1375.             {

  1376.                 int left= FFMAX(j + (*filterPos)[i], 0);

  1377.                 filter[i*filterSize + left] += filter[i*filterSize + j];

  1378.                 filter[i*filterSize + j]=0;

  1379.             }

  1380.             (*filterPos)[i]= 0;

  1381.         }

  1382. 

  1383.         if ((*filterPos)[i] + filterSize > srcW)

  1384.         {

  1385.             int shift= (*filterPos)[i] + filterSize - srcW;

  1386.             // Move filter coeffs right to compensate for filterPos

  1387.             for (j=filterSize-2; j>=0; j--)

  1388.             {

  1389.                 int right= FFMIN(j + shift, filterSize-1);

  1390.                 filter[i*filterSize +right] += filter[i*filterSize +j];

  1391.                 filter[i*filterSize +j]=0;

  1392.             }

  1393.             (*filterPos)[i]= srcW - filterSize;

  1394.         }

  1395.     }

  1396. 

  1397.     // Note the +1 is for the MMXscaler which reads over the end

  1398.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1399.     *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));

  1400. 

  1401.     /* Normalize & Store in outFilter */

  1402.     for (i=0; i<dstW; i++)

  1403.     {

  1404.         int j;

  1405.         int64_t error=0;

  1406.         int64_t sum=0;

  1407. 

  1408.         for (j=0; j<filterSize; j++)

  1409.         {

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

  1411.         }

  1412.         sum= (sum + one/2)/ one;

  1413.         for (j=0; j<*outFilterSize; j++)

  1414.         {

  1415.             int64_t v= filter[i*filterSize + j] + error;

  1416.             int intV= ROUNDED_DIV(v, sum);

  1417.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1418.             error= v - intV*sum;

  1419.         }

  1420.     }

  1421. 

  1422.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1423.     for (i=0; i<*outFilterSize; i++)

  1424.     {

  1425.         int j= dstW*(*outFilterSize);

  1426.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1427.     }

  1428. 

  1429.     ret=0;

  1430. error:

  1431.     av_free(filter);

  1432.     av_free(filter2);

  1433.     return ret;

  1434. }

  1435. 

  1436. #ifdef COMPILE_MMX2

  1437. static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1438. {

  1439.     uint8_t *fragmentA;

  1440.     long imm8OfPShufW1A;

  1441.     long imm8OfPShufW2A;

  1442.     long fragmentLengthA;

  1443.     uint8_t *fragmentB;

  1444.     long imm8OfPShufW1B;

  1445.     long imm8OfPShufW2B;

  1446.     long fragmentLengthB;

  1447.     int fragmentPos;

  1448. 

  1449.     int xpos, i;

  1450. 

  1451.     // create an optimized horizontal scaling routine

  1452. 

  1453.     //code fragment

  1454. 

  1455.     __asm__ volatile(

  1456.         "jmp                         9f                 \n\t"

  1457.     // Begin

  1458.         "0:                                             \n\t"

  1459.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1460.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1461.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1462.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1463.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1464.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1465.         "1:                                             \n\t"

  1466.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1467.         "2:                                             \n\t"

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

  1469.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1470.         "pmullw                   %%mm3, %%mm0          \n\t"

  1471.         "psllw                       $7, %%mm1          \n\t"

  1472.         "paddw                    %%mm1, %%mm0          \n\t"

  1473. 

  1474.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1475. 

  1476.         "add                         $8, %%"REG_a"      \n\t"

  1477.     // End

  1478.         "9:                                             \n\t"

  1479. //        "int $3                                         \n\t"

  1480.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1481.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1482.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1483.         "dec                         %1                 \n\t"

  1484.         "dec                         %2                 \n\t"

  1485.         "sub                         %0, %1             \n\t"

  1486.         "sub                         %0, %2             \n\t"

  1487.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1488.         "sub                         %0, %3             \n\t"

  1489. 

  1490. 

  1491.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1492.         "=r" (fragmentLengthA)

  1493.     );

  1494. 

  1495.     __asm__ volatile(

  1496.         "jmp                         9f                 \n\t"

  1497.     // Begin

  1498.         "0:                                             \n\t"

  1499.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1500.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1501.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1502.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1503.         "1:                                             \n\t"

  1504.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1505.         "2:                                             \n\t"

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

  1507.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1508.         "pmullw                   %%mm3, %%mm0          \n\t"

  1509.         "psllw                       $7, %%mm1          \n\t"

  1510.         "paddw                    %%mm1, %%mm0          \n\t"

  1511. 

  1512.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1513. 

  1514.         "add                         $8, %%"REG_a"      \n\t"

  1515.     // End

  1516.         "9:                                             \n\t"

  1517. //        "int                       $3                   \n\t"

  1518.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1519.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1520.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1521.         "dec                         %1                 \n\t"

  1522.         "dec                         %2                 \n\t"

  1523.         "sub                         %0, %1             \n\t"

  1524.         "sub                         %0, %2             \n\t"

  1525.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1526.         "sub                         %0, %3             \n\t"

  1527. 

  1528. 

  1529.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1530.         "=r" (fragmentLengthB)

  1531.     );

  1532. 

  1533.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1534.     fragmentPos=0;

  1535. 

  1536.     for (i=0; i<dstW/numSplits; i++)

  1537.     {

  1538.         int xx=xpos>>16;

  1539. 

  1540.         if ((i&3) == 0)

  1541.         {

  1542.             int a=0;

  1543.             int b=((xpos+xInc)>>16) - xx;

  1544.             int c=((xpos+xInc*2)>>16) - xx;

  1545.             int d=((xpos+xInc*3)>>16) - xx;

  1546. 

  1547.             filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;

  1548.             filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1549.             filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1550.             filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1551.             filterPos[i/2]= xx;

  1552. 

  1553.             if (d+1<4)

  1554.             {

  1555.                 int maxShift= 3-(d+1);

  1556.                 int shift=0;

  1557. 

  1558.                 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);

  1559. 

  1560.                 funnyCode[fragmentPos + imm8OfPShufW1B]=

  1561.                     (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);

  1562.                 funnyCode[fragmentPos + imm8OfPShufW2B]=

  1563.                     a | (b<<2) | (c<<4) | (d<<6);

  1564. 

  1565.                 if (i+3>=dstW) shift=maxShift; //avoid overread

  1566.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1567. 

  1568.                 if (shift && i>=shift)

  1569.                 {

  1570.                     funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;

  1571.                     funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;

  1572.                     filterPos[i/2]-=shift;

  1573.                 }

  1574. 

  1575.                 fragmentPos+= fragmentLengthB;

  1576.             }

  1577.             else

  1578.             {

  1579.                 int maxShift= 3-d;

  1580.                 int shift=0;

  1581. 

  1582.                 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);

  1583. 

  1584.                 funnyCode[fragmentPos + imm8OfPShufW1A]=

  1585.                 funnyCode[fragmentPos + imm8OfPShufW2A]=

  1586.                     a | (b<<2) | (c<<4) | (d<<6);

  1587. 

  1588.                 if (i+4>=dstW) shift=maxShift; //avoid overread

  1589.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align

  1590. 

  1591.                 if (shift && i>=shift)

  1592.                 {

  1593.                     funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;

  1594.                     funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;

  1595.                     filterPos[i/2]-=shift;

  1596.                 }

  1597. 

  1598.                 fragmentPos+= fragmentLengthA;

  1599.             }

  1600. 

  1601.             funnyCode[fragmentPos]= RET;

  1602.         }

  1603.         xpos+=xInc;

  1604.     }

  1605.     filterPos[i/2]= xpos>>16; // needed to jump to the next part

  1606. }

  1607. #endif /* COMPILE_MMX2 */

  1608. 

  1609. static void globalInit(void){

  1610.     // generating tables:

  1611.     int i;

  1612.     for (i=0; i<768; i++){

  1613.         int c= av_clip_uint8(i-256);

  1614.         clip_table[i]=c;

  1615.     }

  1616. }

  1617. 

  1618. static SwsFunc getSwsFunc(int flags){

  1619. 

  1620. #if defined(RUNTIME_CPUDETECT) && defined (CONFIG_GPL)

  1621. #if defined(ARCH_X86)

  1622.     // ordered per speed fastest first

  1623.     if (flags & SWS_CPU_CAPS_MMX2)

  1624.         return swScale_MMX2;

  1625.     else if (flags & SWS_CPU_CAPS_3DNOW)

  1626.         return swScale_3DNow;

  1627.     else if (flags & SWS_CPU_CAPS_MMX)

  1628.         return swScale_MMX;

  1629.     else

  1630.         return swScale_C;

  1631. 

  1632. #else

  1633. #ifdef ARCH_PPC

  1634.     if (flags & SWS_CPU_CAPS_ALTIVEC)

  1635.         return swScale_altivec;

  1636.     else

  1637.         return swScale_C;

  1638. #endif

  1639.     return swScale_C;

  1640. #endif /* defined(ARCH_X86) */

  1641. #else //RUNTIME_CPUDETECT

  1642. #ifdef HAVE_MMX2

  1643.     return swScale_MMX2;

  1644. #elif defined (HAVE_3DNOW)

  1645.     return swScale_3DNow;

  1646. #elif defined (HAVE_MMX)

  1647.     return swScale_MMX;

  1648. #elif defined (HAVE_ALTIVEC)

  1649.     return swScale_altivec;

  1650. #else

  1651.     return swScale_C;

  1652. #endif

  1653. #endif //!RUNTIME_CPUDETECT

  1654. }

  1655. 

  1656. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1657.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1658.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1659.     /* Copy Y plane */

  1660.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1661.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1662.     else

  1663.     {

  1664.         int i;

  1665.         uint8_t *srcPtr= src[0];

  1666.         uint8_t *dstPtr= dst;

  1667.         for (i=0; i<srcSliceH; i++)

  1668.         {

  1669.             memcpy(dstPtr, srcPtr, c->srcW);

  1670.             srcPtr+= srcStride[0];

  1671.             dstPtr+= dstStride[0];

  1672.         }

  1673.     }

  1674.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1675.     if (c->dstFormat == PIX_FMT_NV12)

  1676.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  1677.     else

  1678.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  1679. 

  1680.     return srcSliceH;

  1681. }

  1682. 

  1683. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1684.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1685.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1686. 

  1687.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1688. 

  1689.     return srcSliceH;

  1690. }

  1691. 

  1692. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1693.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1694.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1695. 

  1696.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1697. 

  1698.     return srcSliceH;

  1699. }

  1700. 

  1701. static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1702.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1703.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1704. 

  1705.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1706. 

  1707.     return srcSliceH;

  1708. }

  1709. 

  1710. static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1711.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1712.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1713. 

  1714.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1715. 

  1716.     return srcSliceH;

  1717. }

  1718. 

  1719. static int pal2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1720.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  1721.     const enum PixelFormat srcFormat= c->srcFormat;

  1722.     const enum PixelFormat dstFormat= c->dstFormat;

  1723.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  1724.                  const uint8_t *palette)=NULL;

  1725.     int i;

  1726.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1727.     uint8_t *srcPtr= src[0];

  1728. 

  1729.     if (!usePal(srcFormat))

  1730.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1731.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1732. 

  1733.     switch(dstFormat){

  1734.     case PIX_FMT_RGB32  : conv = palette8topacked32; break;

  1735.     case PIX_FMT_BGR32  : conv = palette8topacked32; break;

  1736.     case PIX_FMT_BGR32_1: conv = palette8topacked32; break;

  1737.     case PIX_FMT_RGB32_1: conv = palette8topacked32; break;

  1738.     case PIX_FMT_RGB24  : conv = palette8topacked24; break;

  1739.     case PIX_FMT_BGR24  : conv = palette8topacked24; break;

  1740.     default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1741.                     sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1742.     }

  1743. 

  1744. 

  1745.     for (i=0; i<srcSliceH; i++) {

  1746.         conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  1747.         srcPtr+= srcStride[0];

  1748.         dstPtr+= dstStride[0];

  1749.     }

  1750. 

  1751.     return srcSliceH;

  1752. }

  1753. 

  1754. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  1755. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1756.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  1757.     const enum PixelFormat srcFormat= c->srcFormat;

  1758.     const enum PixelFormat dstFormat= c->dstFormat;

  1759.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  1760.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  1761.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1762.     const int dstId= fmt_depth(dstFormat) >> 2;

  1763.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1764. 

  1765.     /* BGR -> BGR */

  1766.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  1767.        || (isRGB(srcFormat) && isRGB(dstFormat))){

  1768.         switch(srcId | (dstId<<4)){

  1769.         case 0x34: conv= rgb16to15; break;

  1770.         case 0x36: conv= rgb24to15; break;

  1771.         case 0x38: conv= rgb32to15; break;

  1772.         case 0x43: conv= rgb15to16; break;

  1773.         case 0x46: conv= rgb24to16; break;

  1774.         case 0x48: conv= rgb32to16; break;

  1775.         case 0x63: conv= rgb15to24; break;

  1776.         case 0x64: conv= rgb16to24; break;

  1777.         case 0x68: conv= rgb32to24; break;

  1778.         case 0x83: conv= rgb15to32; break;

  1779.         case 0x84: conv= rgb16to32; break;

  1780.         case 0x86: conv= rgb24to32; break;

  1781.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1782.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1783.         }

  1784.     }else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  1785.              || (isRGB(srcFormat) && isBGR(dstFormat))){

  1786.         switch(srcId | (dstId<<4)){

  1787.         case 0x33: conv= rgb15tobgr15; break;

  1788.         case 0x34: conv= rgb16tobgr15; break;

  1789.         case 0x36: conv= rgb24tobgr15; break;

  1790.         case 0x38: conv= rgb32tobgr15; break;

  1791.         case 0x43: conv= rgb15tobgr16; break;

  1792.         case 0x44: conv= rgb16tobgr16; break;

  1793.         case 0x46: conv= rgb24tobgr16; break;

  1794.         case 0x48: conv= rgb32tobgr16; break;

  1795.         case 0x63: conv= rgb15tobgr24; break;

  1796.         case 0x64: conv= rgb16tobgr24; break;

  1797.         case 0x66: conv= rgb24tobgr24; break;

  1798.         case 0x68: conv= rgb32tobgr24; break;

  1799.         case 0x83: conv= rgb15tobgr32; break;

  1800.         case 0x84: conv= rgb16tobgr32; break;

  1801.         case 0x86: conv= rgb24tobgr32; break;

  1802.         case 0x88: conv= rgb32tobgr32; break;

  1803.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1804.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1805.         }

  1806.     }else{

  1807.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1808.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1809.     }

  1810. 

  1811.     if(conv)

  1812.     {

  1813.         uint8_t *srcPtr= src[0];

  1814.         if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)

  1815.             srcPtr += ALT32_CORR;

  1816. 

  1817.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  1818.             conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1819.         else

  1820.         {

  1821.             int i;

  1822.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1823. 

  1824.             for (i=0; i<srcSliceH; i++)

  1825.             {

  1826.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1827.                 srcPtr+= srcStride[0];

  1828.                 dstPtr+= dstStride[0];

  1829.             }

  1830.         }

  1831.     }

  1832.     return srcSliceH;

  1833. }

  1834. 

  1835. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1836.                               int srcSliceH, uint8_t* dst[], int dstStride[]){

  1837. 

  1838.     rgb24toyv12(

  1839.         src[0],

  1840.         dst[0]+ srcSliceY    *dstStride[0],

  1841.         dst[1]+(srcSliceY>>1)*dstStride[1],

  1842.         dst[2]+(srcSliceY>>1)*dstStride[2],

  1843.         c->srcW, srcSliceH,

  1844.         dstStride[0], dstStride[1], srcStride[0]);

  1845.     return srcSliceH;

  1846. }

  1847. 

  1848. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1849.                              int srcSliceH, uint8_t* dst[], int dstStride[]){

  1850.     int i;

  1851. 

  1852.     /* copy Y */

  1853.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  1854.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  1855.     else{

  1856.         uint8_t *srcPtr= src[0];

  1857.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1858. 

  1859.         for (i=0; i<srcSliceH; i++)

  1860.         {

  1861.             memcpy(dstPtr, srcPtr, c->srcW);

  1862.             srcPtr+= srcStride[0];

  1863.             dstPtr+= dstStride[0];

  1864.         }

  1865.     }

  1866. 

  1867.     if (c->dstFormat==PIX_FMT_YUV420P){

  1868.         planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);

  1869.         planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);

  1870.     }else{

  1871.         planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);

  1872.         planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);

  1873.     }

  1874.     return srcSliceH;

  1875. }

  1876. 

  1877. /* unscaled copy like stuff (assumes nearly identical formats) */

  1878. static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1879.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  1880. {

  1881.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1882.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1883.     else

  1884.     {

  1885.         int i;

  1886.         uint8_t *srcPtr= src[0];

  1887.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1888.         int length=0;

  1889. 

  1890.         /* universal length finder */

  1891.         while(length+c->srcW <= FFABS(dstStride[0])

  1892.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  1893.         assert(length!=0);

  1894. 

  1895.         for (i=0; i<srcSliceH; i++)

  1896.         {

  1897.             memcpy(dstPtr, srcPtr, length);

  1898.             srcPtr+= srcStride[0];

  1899.             dstPtr+= dstStride[0];

  1900.         }

  1901.     }

  1902.     return srcSliceH;

  1903. }

  1904. 

  1905. static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1906.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  1907. {

  1908.     int plane;

  1909.     for (plane=0; plane<3; plane++)

  1910.     {

  1911.         int length= plane==0 ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1912.         int y=      plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1913.         int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1914. 

  1915.         if ((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)

  1916.         {

  1917.             if (!isGray(c->dstFormat))

  1918.                 memset(dst[plane], 128, dstStride[plane]*height);

  1919.         }

  1920.         else

  1921.         {

  1922.             if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  1923.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  1924.             else

  1925.             {

  1926.                 int i;

  1927.                 uint8_t *srcPtr= src[plane];

  1928.                 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  1929.                 for (i=0; i<height; i++)

  1930.                 {

  1931.                     memcpy(dstPtr, srcPtr, length);

  1932.                     srcPtr+= srcStride[plane];

  1933.                     dstPtr+= dstStride[plane];

  1934.                 }

  1935.             }

  1936.         }

  1937.     }

  1938.     return srcSliceH;

  1939. }

  1940. 

  1941. static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1942.                         int srcSliceH, uint8_t* dst[], int dstStride[]){

  1943. 

  1944.     int length= c->srcW;

  1945.     int y=      srcSliceY;

  1946.     int height= srcSliceH;

  1947.     int i, j;

  1948.     uint8_t *srcPtr= src[0];

  1949.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  1950. 

  1951.     if (!isGray(c->dstFormat)){

  1952.         int height= -((-srcSliceH)>>c->chrDstVSubSample);

  1953.         memset(dst[1], 128, dstStride[1]*height);

  1954.         memset(dst[2], 128, dstStride[2]*height);

  1955.     }

  1956.     if (c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;

  1957.     for (i=0; i<height; i++)

  1958.     {

  1959.         for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  1960.         srcPtr+= srcStride[0];

  1961.         dstPtr+= dstStride[0];

  1962.     }

  1963.     return srcSliceH;

  1964. }

  1965. 

  1966. static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

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

  1968. 

  1969.     int length= c->srcW;

  1970.     int y=      srcSliceY;

  1971.     int height= srcSliceH;

  1972.     int i, j;

  1973.     uint8_t *srcPtr= src[0];

  1974.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  1975.     for (i=0; i<height; i++)

  1976.     {

  1977.         for (j=0; j<length; j++)

  1978.         {

  1979.             dstPtr[j<<1] = srcPtr[j];

  1980.             dstPtr[(j<<1)+1] = srcPtr[j];

  1981.         }

  1982.         srcPtr+= srcStride[0];

  1983.         dstPtr+= dstStride[0];

  1984.     }

  1985.     return srcSliceH;

  1986. }

  1987. 

  1988. static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1989.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  1990. 

  1991.     int length= c->srcW;

  1992.     int y=      srcSliceY;

  1993.     int height= srcSliceH;

  1994.     int i, j;

  1995.     uint16_t *srcPtr= (uint16_t*)src[0];

  1996.     uint16_t *dstPtr= (uint16_t*)(dst[0] + dstStride[0]*y/2);

  1997.     for (i=0; i<height; i++)

  1998.     {

  1999.         for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);

  2000.         srcPtr+= srcStride[0]/2;

  2001.         dstPtr+= dstStride[0]/2;

  2002.     }

  2003.     return srcSliceH;

  2004. }

  2005. 

  2006. 

  2007. static void getSubSampleFactors(int *h, int *v, int format){

  2008.     switch(format){

  2009.     case PIX_FMT_UYVY422:

  2010.     case PIX_FMT_YUYV422:

  2011.         *h=1;

  2012.         *v=0;

  2013.         break;

  2014.     case PIX_FMT_YUV420P:

  2015.     case PIX_FMT_YUVA420P:

  2016.     case PIX_FMT_GRAY16BE:

  2017.     case PIX_FMT_GRAY16LE:

  2018.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  2019.     case PIX_FMT_NV12:

  2020.     case PIX_FMT_NV21:

  2021.         *h=1;

  2022.         *v=1;

  2023.         break;

  2024.     case PIX_FMT_YUV440P:

  2025.         *h=0;

  2026.         *v=1;

  2027.         break;

  2028.     case PIX_FMT_YUV410P:

  2029.         *h=2;

  2030.         *v=2;

  2031.         break;

  2032.     case PIX_FMT_YUV444P:

  2033.         *h=0;

  2034.         *v=0;

  2035.         break;

  2036.     case PIX_FMT_YUV422P:

  2037.         *h=1;

  2038.         *v=0;

  2039.         break;

  2040.     case PIX_FMT_YUV411P:

  2041.         *h=2;

  2042.         *v=0;

  2043.         break;

  2044.     default:

  2045.         *h=0;

  2046.         *v=0;

  2047.         break;

  2048.     }

  2049. }

  2050. 

  2051. static uint16_t roundToInt16(int64_t f){

  2052.     int r= (f + (1<<15))>>16;

  2053.          if (r<-0x7FFF) return 0x8000;

  2054.     else if (r> 0x7FFF) return 0x7FFF;

  2055.     else                return r;

  2056. }

  2057. 

  2058. /**

  2059.  * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]

  2060.  * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235

  2061.  * @return -1 if not supported

  2062.  */

  2063. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){

  2064.     int64_t crv =  inv_table[0];

  2065.     int64_t cbu =  inv_table[1];

  2066.     int64_t cgu = -inv_table[2];

  2067.     int64_t cgv = -inv_table[3];

  2068.     int64_t cy  = 1<<16;

  2069.     int64_t oy  = 0;

  2070. 

  2071.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  2072.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  2073. 

  2074.     c->brightness= brightness;

  2075.     c->contrast  = contrast;

  2076.     c->saturation= saturation;

  2077.     c->srcRange  = srcRange;

  2078.     c->dstRange  = dstRange;

  2079.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return 0;

  2080. 

  2081.     c->uOffset=   0x0400040004000400LL;

  2082.     c->vOffset=   0x0400040004000400LL;

  2083. 

  2084.     if (!srcRange){

  2085.         cy= (cy*255) / 219;

  2086.         oy= 16<<16;

  2087.     }else{

  2088.         crv= (crv*224) / 255;

  2089.         cbu= (cbu*224) / 255;

  2090.         cgu= (cgu*224) / 255;

  2091.         cgv= (cgv*224) / 255;

  2092.     }

  2093. 

  2094.     cy = (cy *contrast             )>>16;

  2095.     crv= (crv*contrast * saturation)>>32;

  2096.     cbu= (cbu*contrast * saturation)>>32;

  2097.     cgu= (cgu*contrast * saturation)>>32;

  2098.     cgv= (cgv*contrast * saturation)>>32;

  2099. 

  2100.     oy -= 256*brightness;

  2101. 

  2102.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  2103.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  2104.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  2105.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  2106.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  2107.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  2108. 

  2109.     c->yuv2rgb_y_coeff  = (int16_t)roundToInt16(cy <<13);

  2110.     c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);

  2111.     c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);

  2112.     c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);

  2113.     c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);

  2114.     c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);

  2115. 

  2116.     yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  2117.     //FIXME factorize

  2118. 

  2119. #ifdef COMPILE_ALTIVEC

  2120.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  2121.         yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);

  2122. #endif

  2123.     return 0;

  2124. }

  2125. 

  2126. /**

  2127.  * @return -1 if not supported

  2128.  */

  2129. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){

  2130.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2131. 

  2132.     *inv_table = c->srcColorspaceTable;

  2133.     *table     = c->dstColorspaceTable;

  2134.     *srcRange  = c->srcRange;

  2135.     *dstRange  = c->dstRange;

  2136.     *brightness= c->brightness;

  2137.     *contrast  = c->contrast;

  2138.     *saturation= c->saturation;

  2139. 

  2140.     return 0;

  2141. }

  2142. 

  2143. static int handle_jpeg(enum PixelFormat *format)

  2144. {

  2145.     switch (*format) {

  2146.         case PIX_FMT_YUVJ420P:

  2147.             *format = PIX_FMT_YUV420P;

  2148.             return 1;

  2149.         case PIX_FMT_YUVJ422P:

  2150.             *format = PIX_FMT_YUV422P;

  2151.             return 1;

  2152.         case PIX_FMT_YUVJ444P:

  2153.             *format = PIX_FMT_YUV444P;

  2154.             return 1;

  2155.         case PIX_FMT_YUVJ440P:

  2156.             *format = PIX_FMT_YUV440P;

  2157.             return 1;

  2158.         default:

  2159.             return 0;

  2160.     }

  2161. }

  2162. 

  2163. SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  2164.                            SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){

  2165. 

  2166.     SwsContext *c;

  2167.     int i;

  2168.     int usesVFilter, usesHFilter;

  2169.     int unscaled, needsDither;

  2170.     int srcRange, dstRange;

  2171.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2172. #if defined(ARCH_X86)

  2173.     if (flags & SWS_CPU_CAPS_MMX)

  2174.         __asm__ volatile("emms\n\t"::: "memory");

  2175. #endif

  2176. 

  2177. #if !defined(RUNTIME_CPUDETECT) || !defined (CONFIG_GPL) //ensure that the flags match the compiled variant if cpudetect is off

  2178.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2179. #ifdef HAVE_MMX2

  2180.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2181. #elif defined (HAVE_3DNOW)

  2182.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2183. #elif defined (HAVE_MMX)

  2184.     flags |= SWS_CPU_CAPS_MMX;

  2185. #elif defined (HAVE_ALTIVEC)

  2186.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2187. #elif defined (ARCH_BFIN)

  2188.     flags |= SWS_CPU_CAPS_BFIN;

  2189. #endif

  2190. #endif /* RUNTIME_CPUDETECT */

  2191.     if (clip_table[512] != 255) globalInit();

  2192.     if (!rgb15to16) sws_rgb2rgb_init(flags);

  2193. 

  2194.     unscaled = (srcW == dstW && srcH == dstH);

  2195.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2196.         && (fmt_depth(dstFormat))<24

  2197.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2198. 

  2199.     srcRange = handle_jpeg(&srcFormat);

  2200.     dstRange = handle_jpeg(&dstFormat);

  2201. 

  2202.     if (!isSupportedIn(srcFormat))

  2203.     {

  2204.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));

  2205.         return NULL;

  2206.     }

  2207.     if (!isSupportedOut(dstFormat))

  2208.     {

  2209.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));

  2210.         return NULL;

  2211.     }

  2212. 

  2213.     i= flags & ( SWS_POINT

  2214.                 |SWS_AREA

  2215.                 |SWS_BILINEAR

  2216.                 |SWS_FAST_BILINEAR

  2217.                 |SWS_BICUBIC

  2218.                 |SWS_X

  2219.                 |SWS_GAUSS

  2220.                 |SWS_LANCZOS

  2221.                 |SWS_SINC

  2222.                 |SWS_SPLINE

  2223.                 |SWS_BICUBLIN);

  2224.     if(!i || (i & (i-1)))

  2225.     {

  2226.         av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be choosen\n");

  2227.         return NULL;

  2228.     }

  2229. 

  2230.     /* sanity check */

  2231.     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

  2232.     {

  2233.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2234.                srcW, srcH, dstW, dstH);

  2235.         return NULL;

  2236.     }

  2237.     if(srcW > VOFW || dstW > VOFW){

  2238.         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile time max width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");

  2239.         return NULL;

  2240.     }

  2241. 

  2242.     if (!dstFilter) dstFilter= &dummyFilter;

  2243.     if (!srcFilter) srcFilter= &dummyFilter;

  2244. 

  2245.     c= av_mallocz(sizeof(SwsContext));

  2246. 

  2247.     c->av_class = &sws_context_class;

  2248.     c->srcW= srcW;

  2249.     c->srcH= srcH;

  2250.     c->dstW= dstW;

  2251.     c->dstH= dstH;

  2252.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2253.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2254.     c->flags= flags;

  2255.     c->dstFormat= dstFormat;

  2256.     c->srcFormat= srcFormat;

  2257.     c->vRounder= 4* 0x0001000100010001ULL;

  2258. 

  2259.     usesHFilter= usesVFilter= 0;

  2260.     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;

  2261.     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;

  2262.     if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;

  2263.     if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;

  2264.     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;

  2265.     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;

  2266.     if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;

  2267.     if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;

  2268. 

  2269.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2270.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2271. 

  2272.     // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation

  2273.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2274. 

  2275.     // drop some chroma lines if the user wants it

  2276.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2277.     c->chrSrcVSubSample+= c->vChrDrop;

  2278. 

  2279.     // drop every 2. pixel for chroma calculation unless user wants full chroma

  2280.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2281.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2282.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2283.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE

  2284.       && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2285.         c->chrSrcHSubSample=1;

  2286. 

  2287.     if (param){

  2288.         c->param[0] = param[0];

  2289.         c->param[1] = param[1];

  2290.     }else{

  2291.         c->param[0] =

  2292.         c->param[1] = SWS_PARAM_DEFAULT;

  2293.     }

  2294. 

  2295.     c->chrIntHSubSample= c->chrDstHSubSample;

  2296.     c->chrIntVSubSample= c->chrSrcVSubSample;

  2297. 

  2298.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2299.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2300.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2301.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2302.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2303. 

  2304.     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);

  2305. 

  2306.     /* unscaled special Cases */

  2307.     if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat)))

  2308.     {

  2309.         /* yv12_to_nv12 */

  2310.         if (srcFormat == PIX_FMT_YUV420P && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))

  2311.         {

  2312.             c->swScale= PlanarToNV12Wrapper;

  2313.         }

  2314. #ifdef CONFIG_GPL

  2315.         /* yuv2bgr */

  2316.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P) && (isBGR(dstFormat) || isRGB(dstFormat))

  2317.             && !(flags & SWS_ACCURATE_RND) && !(dstH&1))

  2318.         {

  2319.             c->swScale= yuv2rgb_get_func_ptr(c);

  2320.         }

  2321. #endif

  2322. 

  2323.         if (srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_BITEXACT))

  2324.         {

  2325.             c->swScale= yvu9toyv12Wrapper;

  2326.         }

  2327. 

  2328.         /* bgr24toYV12 */

  2329.         if (srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_ACCURATE_RND))

  2330.             c->swScale= bgr24toyv12Wrapper;

  2331. 

  2332.         /* rgb/bgr -> rgb/bgr (no dither needed forms) */

  2333.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2334.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2335.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2336.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2337.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2338.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2339.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2340.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2341.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2342.            && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  2343.                                              && dstFormat != PIX_FMT_RGB32_1

  2344.                                              && dstFormat != PIX_FMT_BGR32_1

  2345.            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2346.              c->swScale= rgb2rgbWrapper;

  2347. 

  2348.         if ((usePal(srcFormat) && (

  2349.                  dstFormat == PIX_FMT_RGB32   ||

  2350.                  dstFormat == PIX_FMT_RGB32_1 ||

  2351.                  dstFormat == PIX_FMT_RGB24   ||

  2352.                  dstFormat == PIX_FMT_BGR32   ||

  2353.                  dstFormat == PIX_FMT_BGR32_1 ||

  2354.                  dstFormat == PIX_FMT_BGR24)))

  2355.              c->swScale= pal2rgbWrapper;

  2356. 

  2357.         if (srcFormat == PIX_FMT_YUV422P)

  2358.         {

  2359.             if (dstFormat == PIX_FMT_YUYV422)

  2360.                 c->swScale= YUV422PToYuy2Wrapper;

  2361.             else if (dstFormat == PIX_FMT_UYVY422)

  2362.                 c->swScale= YUV422PToUyvyWrapper;

  2363.         }

  2364. 

  2365.         /* LQ converters if -sws 0 or -sws 4*/

  2366.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){

  2367.             /* yv12_to_yuy2 */

  2368.             if (srcFormat == PIX_FMT_YUV420P)

  2369.             {

  2370.                 if (dstFormat == PIX_FMT_YUYV422)

  2371.                     c->swScale= PlanarToYuy2Wrapper;

  2372.                 else if (dstFormat == PIX_FMT_UYVY422)

  2373.                     c->swScale= PlanarToUyvyWrapper;

  2374.             }

  2375.         }

  2376. 

  2377. #ifdef COMPILE_ALTIVEC

  2378.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2379.             srcFormat == PIX_FMT_YUV420P) {

  2380.           // unscaled YV12 -> packed YUV, we want speed

  2381.           if (dstFormat == PIX_FMT_YUYV422)

  2382.               c->swScale= yv12toyuy2_unscaled_altivec;

  2383.           else if (dstFormat == PIX_FMT_UYVY422)

  2384.               c->swScale= yv12touyvy_unscaled_altivec;

  2385.         }

  2386. #endif

  2387. 

  2388.         /* simple copy */

  2389.         if (  srcFormat == dstFormat

  2390.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2391.             || (isPlanarYUV(dstFormat) && isGray(srcFormat)))

  2392.         {

  2393.             if (isPacked(c->srcFormat))

  2394.                 c->swScale= packedCopy;

  2395.             else /* Planar YUV or gray */

  2396.                 c->swScale= planarCopy;

  2397.         }

  2398. 

  2399.         /* gray16{le,be} conversions */

  2400.         if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))

  2401.         {

  2402.             c->swScale= gray16togray;

  2403.         }

  2404.         if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))

  2405.         {

  2406.             c->swScale= graytogray16;

  2407.         }

  2408.         if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))

  2409.         {

  2410.             c->swScale= gray16swap;

  2411.         }

  2412. 

  2413. #ifdef ARCH_BFIN

  2414.         if (flags & SWS_CPU_CAPS_BFIN)

  2415.             ff_bfin_get_unscaled_swscale (c);

  2416. #endif

  2417. 

  2418.         if (c->swScale){

  2419.             if (flags&SWS_PRINT_INFO)

  2420.                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",

  2421.                                 sws_format_name(srcFormat), sws_format_name(dstFormat));

  2422.             return c;

  2423.         }

  2424.     }

  2425. 

  2426.     if (flags & SWS_CPU_CAPS_MMX2)

  2427.     {

  2428.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2429.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))

  2430.         {

  2431.             if (flags&SWS_PRINT_INFO)

  2432.                 av_log(c, AV_LOG_INFO, "output Width is not a multiple of 32 -> no MMX2 scaler\n");

  2433.         }

  2434.         if (usesHFilter) c->canMMX2BeUsed=0;

  2435.     }

  2436.     else

  2437.         c->canMMX2BeUsed=0;

  2438. 

  2439.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2440.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2441. 

  2442.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2443.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2444.     // n-2 is the last chrominance sample available

  2445.     // this is not perfect, but no one should notice the difference, the more correct variant

  2446.     // would be like the vertical one, but that would require some special code for the

  2447.     // first and last pixel

  2448.     if (flags&SWS_FAST_BILINEAR)

  2449.     {

  2450.         if (c->canMMX2BeUsed)

  2451.         {

  2452.             c->lumXInc+= 20;

  2453.             c->chrXInc+= 20;

  2454.         }

  2455.         //we don't use the x86asm scaler if mmx is available

  2456.         else if (flags & SWS_CPU_CAPS_MMX)

  2457.         {

  2458.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2459.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2460.         }

  2461.     }

  2462. 

  2463.     /* precalculate horizontal scaler filter coefficients */

  2464.     {

  2465.         const int filterAlign=

  2466.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2467.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2468.             1;

  2469. 

  2470.         initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2471.                    srcW      ,       dstW, filterAlign, 1<<14,

  2472.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2473.                    srcFilter->lumH, dstFilter->lumH, c->param);

  2474.         initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2475.                    c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2476.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2477.                    srcFilter->chrH, dstFilter->chrH, c->param);

  2478. 

  2479. #define MAX_FUNNY_CODE_SIZE 10000

  2480. #if defined(COMPILE_MMX2)

  2481. // can't downscale !!!

  2482.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))

  2483.         {

  2484. #ifdef MAP_ANONYMOUS

  2485.             c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2486.             c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2487. #else

  2488.             c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2489.             c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2490. #endif

  2491. 

  2492.             c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));

  2493.             c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));

  2494.             c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));

  2495.             c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));

  2496. 

  2497.             initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2498.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2499.         }

  2500. #endif /* defined(COMPILE_MMX2) */

  2501.     } // Init Horizontal stuff

  2502. 

  2503. 

  2504. 

  2505.     /* precalculate vertical scaler filter coefficients */

  2506.     {

  2507.         const int filterAlign=

  2508.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2509.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2510.             1;

  2511. 

  2512.         initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2513.                    srcH      ,        dstH, filterAlign, (1<<12),

  2514.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2515.                    srcFilter->lumV, dstFilter->lumV, c->param);

  2516.         initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2517.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12),

  2518.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2519.                    srcFilter->chrV, dstFilter->chrV, c->param);

  2520. 

  2521. #ifdef HAVE_ALTIVEC

  2522.         c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);

  2523.         c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);

  2524. 

  2525.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2526.             int j;

  2527.             short *p = (short *)&c->vYCoeffsBank[i];

  2528.             for (j=0;j<8;j++)

  2529.                 p[j] = c->vLumFilter[i];

  2530.         }

  2531. 

  2532.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2533.             int j;

  2534.             short *p = (short *)&c->vCCoeffsBank[i];

  2535.             for (j=0;j<8;j++)

  2536.                 p[j] = c->vChrFilter[i];

  2537.         }

  2538. #endif

  2539.     }

  2540. 

  2541.     // Calculate Buffer Sizes so that they won't run out while handling these damn slices

  2542.     c->vLumBufSize= c->vLumFilterSize;

  2543.     c->vChrBufSize= c->vChrFilterSize;

  2544.     for (i=0; i<dstH; i++)

  2545.     {

  2546.         int chrI= i*c->chrDstH / dstH;

  2547.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2548.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2549. 

  2550.         nextSlice>>= c->chrSrcVSubSample;

  2551.         nextSlice<<= c->chrSrcVSubSample;

  2552.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2553.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];

  2554.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2555.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2556.     }

  2557. 

  2558.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2559.     c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2560.     c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));

  2561.     //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)

  2562.     /* align at 16 bytes for AltiVec */

  2563.     for (i=0; i<c->vLumBufSize; i++)

  2564.         c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2565.     for (i=0; i<c->vChrBufSize; i++)

  2566.         c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);

  2567. 

  2568.     //try to avoid drawing green stuff between the right end and the stride end

  2569.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);

  2570. 

  2571.     assert(2*VOFW == VOF);

  2572. 

  2573.     assert(c->chrDstH <= dstH);

  2574. 

  2575.     if (flags&SWS_PRINT_INFO)

  2576.     {

  2577. #ifdef DITHER1XBPP

  2578.         const char *dither= " dithered";

  2579. #else

  2580.         const char *dither= "";

  2581. #endif

  2582.         if (flags&SWS_FAST_BILINEAR)

  2583.             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");

  2584.         else if (flags&SWS_BILINEAR)

  2585.             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");

  2586.         else if (flags&SWS_BICUBIC)

  2587.             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");

  2588.         else if (flags&SWS_X)

  2589.             av_log(c, AV_LOG_INFO, "Experimental scaler, ");

  2590.         else if (flags&SWS_POINT)

  2591.             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");

  2592.         else if (flags&SWS_AREA)

  2593.             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");

  2594.         else if (flags&SWS_BICUBLIN)

  2595.             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");

  2596.         else if (flags&SWS_GAUSS)

  2597.             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");

  2598.         else if (flags&SWS_SINC)

  2599.             av_log(c, AV_LOG_INFO, "Sinc scaler, ");

  2600.         else if (flags&SWS_LANCZOS)

  2601.             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");

  2602.         else if (flags&SWS_SPLINE)

  2603.             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");

  2604.         else

  2605.             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");

  2606. 

  2607.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2608.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  2609.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2610.         else

  2611.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  2612.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  2613. 

  2614.         if (flags & SWS_CPU_CAPS_MMX2)

  2615.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  2616.         else if (flags & SWS_CPU_CAPS_3DNOW)

  2617.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  2618.         else if (flags & SWS_CPU_CAPS_MMX)

  2619.             av_log(c, AV_LOG_INFO, "using MMX\n");

  2620.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  2621.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  2622.         else

  2623.             av_log(c, AV_LOG_INFO, "using C\n");

  2624.     }

  2625. 

  2626.     if (flags & SWS_PRINT_INFO)

  2627.     {

  2628.         if (flags & SWS_CPU_CAPS_MMX)

  2629.         {

  2630.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2631.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  2632.             else

  2633.             {

  2634.                 if (c->hLumFilterSize==4)

  2635.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");

  2636.                 else if (c->hLumFilterSize==8)

  2637.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");

  2638.                 else

  2639.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");

  2640. 

  2641.                 if (c->hChrFilterSize==4)

  2642.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");

  2643.                 else if (c->hChrFilterSize==8)

  2644.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");

  2645.                 else

  2646.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");

  2647.             }

  2648.         }

  2649.         else

  2650.         {

  2651. #if defined(ARCH_X86)

  2652.             av_log(c, AV_LOG_VERBOSE, "using X86-Asm scaler for horizontal scaling\n");

  2653. #else

  2654.             if (flags & SWS_FAST_BILINEAR)

  2655.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");

  2656.             else

  2657.                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");

  2658. #endif

  2659.         }

  2660.         if (isPlanarYUV(dstFormat))

  2661.         {

  2662.             if (c->vLumFilterSize==1)

  2663.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2664.             else

  2665.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2666.         }

  2667.         else

  2668.         {

  2669.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  2670.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  2671.                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2672.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  2673.                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2674.             else

  2675.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2676.         }

  2677. 

  2678.         if (dstFormat==PIX_FMT_BGR24)

  2679.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 Converter\n",

  2680.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  2681.         else if (dstFormat==PIX_FMT_RGB32)

  2682.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2683.         else if (dstFormat==PIX_FMT_BGR565)

  2684.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2685.         else if (dstFormat==PIX_FMT_BGR555)

  2686.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2687. 

  2688.         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  2689.     }

  2690.     if (flags & SWS_PRINT_INFO)

  2691.     {

  2692.         av_log(c, AV_LOG_DEBUG, "Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2693.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  2694.         av_log(c, AV_LOG_DEBUG, "Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2695.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  2696.     }

  2697. 

  2698.     c->swScale= getSwsFunc(flags);

  2699.     return c;

  2700. }

  2701. 

  2702. /**

  2703.  * swscale wrapper, so we don't need to export the SwsContext.

  2704.  * assumes planar YUV to be in YUV order instead of YVU

  2705.  */

  2706. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2707.               int srcSliceH, uint8_t* dst[], int dstStride[]){

  2708.     int i;

  2709.     uint8_t* src2[4]= {src[0], src[1], src[2]};

  2710. 

  2711.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  2712.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  2713.         return 0;

  2714.     }

  2715.     if (c->sliceDir == 0) {

  2716.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  2717.     }

  2718. 

  2719.     if (usePal(c->srcFormat)){

  2720.         for (i=0; i<256; i++){

  2721.             int p, r, g, b,y,u,v;

  2722.             if(c->srcFormat == PIX_FMT_PAL8){

  2723.                 p=((uint32_t*)(src[1]))[i];

  2724.                 r= (p>>16)&0xFF;

  2725.                 g= (p>> 8)&0xFF;

  2726.                 b=  p     &0xFF;

  2727.             }else if(c->srcFormat == PIX_FMT_RGB8){

  2728.                 r= (i>>5    )*36;

  2729.                 g= ((i>>2)&7)*36;

  2730.                 b= (i&3     )*85;

  2731.             }else if(c->srcFormat == PIX_FMT_BGR8){

  2732.                 b= (i>>6    )*85;

  2733.                 g= ((i>>3)&7)*36;

  2734.                 r= (i&7     )*36;

  2735.             }else if(c->srcFormat == PIX_FMT_RGB4_BYTE){

  2736.                 r= (i>>3    )*255;

  2737.                 g= ((i>>1)&3)*85;

  2738.                 b= (i&1     )*255;

  2739.             }else {

  2740.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  2741.                 b= (i>>3    )*255;

  2742.                 g= ((i>>1)&3)*85;

  2743.                 r= (i&1     )*255;

  2744.             }

  2745.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2746.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2747.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2748.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  2749. 

  2750. 

  2751.             switch(c->dstFormat) {

  2752.             case PIX_FMT_BGR32:

  2753. #ifndef WORDS_BIGENDIAN

  2754.             case PIX_FMT_RGB24:

  2755. #endif

  2756.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  2757.                 break;

  2758.             case PIX_FMT_BGR32_1:

  2759. #ifdef  WORDS_BIGENDIAN

  2760.             case PIX_FMT_BGR24:

  2761. #endif

  2762.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  2763.                 break;

  2764.             case PIX_FMT_RGB32_1:

  2765. #ifdef  WORDS_BIGENDIAN

  2766.             case PIX_FMT_RGB24:

  2767. #endif

  2768.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  2769.                 break;

  2770.             case PIX_FMT_RGB32:

  2771. #ifndef WORDS_BIGENDIAN

  2772.             case PIX_FMT_BGR24:

  2773. #endif

  2774.             default:

  2775.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  2776.             }

  2777.         }

  2778.     }

  2779. 

  2780.     // copy strides, so they can safely be modified

  2781.     if (c->sliceDir == 1) {

  2782.         // slices go from top to bottom

  2783.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};

  2784.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};

  2785.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);

  2786.     } else {

  2787.         // slices go from bottom to top => we flip the image internally

  2788.         uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],

  2789.                            dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],

  2790.                            dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};

  2791.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};

  2792.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};

  2793. 

  2794.         src2[0] += (srcSliceH-1)*srcStride[0];

  2795.         if (!usePal(c->srcFormat))

  2796.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  2797.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  2798. 

  2799.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  2800.     }

  2801. }

  2802. 

  2803. /**

  2804.  * swscale wrapper, so we don't need to export the SwsContext

  2805.  */

  2806. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2807.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  2808.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  2809. }

  2810. 

  2811. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  2812.                                 float lumaSharpen, float chromaSharpen,

  2813.                                 float chromaHShift, float chromaVShift,

  2814.                                 int verbose)

  2815. {

  2816.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  2817. 

  2818.     if (lumaGBlur!=0.0){

  2819.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  2820.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  2821.     }else{

  2822.         filter->lumH= sws_getIdentityVec();

  2823.         filter->lumV= sws_getIdentityVec();

  2824.     }

  2825. 

  2826.     if (chromaGBlur!=0.0){

  2827.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  2828.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  2829.     }else{

  2830.         filter->chrH= sws_getIdentityVec();

  2831.         filter->chrV= sws_getIdentityVec();

  2832.     }

  2833. 

  2834.     if (chromaSharpen!=0.0){

  2835.         SwsVector *id= sws_getIdentityVec();

  2836.         sws_scaleVec(filter->chrH, -chromaSharpen);

  2837.         sws_scaleVec(filter->chrV, -chromaSharpen);

  2838.         sws_addVec(filter->chrH, id);

  2839.         sws_addVec(filter->chrV, id);

  2840.         sws_freeVec(id);

  2841.     }

  2842. 

  2843.     if (lumaSharpen!=0.0){

  2844.         SwsVector *id= sws_getIdentityVec();

  2845.         sws_scaleVec(filter->lumH, -lumaSharpen);

  2846.         sws_scaleVec(filter->lumV, -lumaSharpen);

  2847.         sws_addVec(filter->lumH, id);

  2848.         sws_addVec(filter->lumV, id);

  2849.         sws_freeVec(id);

  2850.     }

  2851. 

  2852.     if (chromaHShift != 0.0)

  2853.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  2854. 

  2855.     if (chromaVShift != 0.0)

  2856.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  2857. 

  2858.     sws_normalizeVec(filter->chrH, 1.0);

  2859.     sws_normalizeVec(filter->chrV, 1.0);

  2860.     sws_normalizeVec(filter->lumH, 1.0);

  2861.     sws_normalizeVec(filter->lumV, 1.0);

  2862. 

  2863.     if (verbose) sws_printVec(filter->chrH);

  2864.     if (verbose) sws_printVec(filter->lumH);

  2865. 

  2866.     return filter;

  2867. }

  2868. 

  2869. /**

  2870.  * returns a normalized gaussian curve used to filter stuff

  2871.  * quality=3 is high quality, lowwer is lowwer quality

  2872.  */

  2873. SwsVector *sws_getGaussianVec(double variance, double quality){

  2874.     const int length= (int)(variance*quality + 0.5) | 1;

  2875.     int i;

  2876.     double *coeff= av_malloc(length*sizeof(double));

  2877.     double middle= (length-1)*0.5;

  2878.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2879. 

  2880.     vec->coeff= coeff;

  2881.     vec->length= length;

  2882. 

  2883.     for (i=0; i<length; i++)

  2884.     {

  2885.         double dist= i-middle;

  2886.         coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);

  2887.     }

  2888. 

  2889.     sws_normalizeVec(vec, 1.0);

  2890. 

  2891.     return vec;

  2892. }

  2893. 

  2894. SwsVector *sws_getConstVec(double c, int length){

  2895.     int i;

  2896.     double *coeff= av_malloc(length*sizeof(double));

  2897.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2898. 

  2899.     vec->coeff= coeff;

  2900.     vec->length= length;

  2901. 

  2902.     for (i=0; i<length; i++)

  2903.         coeff[i]= c;

  2904. 

  2905.     return vec;

  2906. }

  2907. 

  2908. 

  2909. SwsVector *sws_getIdentityVec(void){

  2910.     return sws_getConstVec(1.0, 1);

  2911. }

  2912. 

  2913. double sws_dcVec(SwsVector *a){

  2914.     int i;

  2915.     double sum=0;

  2916. 

  2917.     for (i=0; i<a->length; i++)

  2918.         sum+= a->coeff[i];

  2919. 

  2920.     return sum;

  2921. }

  2922. 

  2923. void sws_scaleVec(SwsVector *a, double scalar){

  2924.     int i;

  2925. 

  2926.     for (i=0; i<a->length; i++)

  2927.         a->coeff[i]*= scalar;

  2928. }

  2929. 

  2930. void sws_normalizeVec(SwsVector *a, double height){

  2931.     sws_scaleVec(a, height/sws_dcVec(a));

  2932. }

  2933. 

  2934. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){

  2935.     int length= a->length + b->length - 1;

  2936.     double *coeff= av_malloc(length*sizeof(double));

  2937.     int i, j;

  2938.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2939. 

  2940.     vec->coeff= coeff;

  2941.     vec->length= length;

  2942. 

  2943.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2944. 

  2945.     for (i=0; i<a->length; i++)

  2946.     {

  2947.         for (j=0; j<b->length; j++)

  2948.         {

  2949.             coeff[i+j]+= a->coeff[i]*b->coeff[j];

  2950.         }

  2951.     }

  2952. 

  2953.     return vec;

  2954. }

  2955. 

  2956. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){

  2957.     int length= FFMAX(a->length, b->length);

  2958.     double *coeff= av_malloc(length*sizeof(double));

  2959.     int i;

  2960.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2961. 

  2962.     vec->coeff= coeff;

  2963.     vec->length= length;

  2964. 

  2965.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2966. 

  2967.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2968.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  2969. 

  2970.     return vec;

  2971. }

  2972. 

  2973. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){

  2974.     int length= FFMAX(a->length, b->length);

  2975.     double *coeff= av_malloc(length*sizeof(double));

  2976.     int i;

  2977.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2978. 

  2979.     vec->coeff= coeff;

  2980.     vec->length= length;

  2981. 

  2982.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2983. 

  2984.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2985.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  2986. 

  2987.     return vec;

  2988. }

  2989. 

  2990. /* shift left / or right if "shift" is negative */

  2991. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){

  2992.     int length= a->length + FFABS(shift)*2;

  2993.     double *coeff= av_malloc(length*sizeof(double));

  2994.     int i;

  2995.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2996. 

  2997.     vec->coeff= coeff;

  2998.     vec->length= length;

  2999. 

  3000.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3001. 

  3002.     for (i=0; i<a->length; i++)

  3003.     {

  3004.         coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  3005.     }

  3006. 

  3007.     return vec;

  3008. }

  3009. 

  3010. void sws_shiftVec(SwsVector *a, int shift){

  3011.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  3012.     av_free(a->coeff);

  3013.     a->coeff= shifted->coeff;

  3014.     a->length= shifted->length;

  3015.     av_free(shifted);

  3016. }

  3017. 

  3018. void sws_addVec(SwsVector *a, SwsVector *b){

  3019.     SwsVector *sum= sws_sumVec(a, b);

  3020.     av_free(a->coeff);

  3021.     a->coeff= sum->coeff;

  3022.     a->length= sum->length;

  3023.     av_free(sum);

  3024. }

  3025. 

  3026. void sws_subVec(SwsVector *a, SwsVector *b){

  3027.     SwsVector *diff= sws_diffVec(a, b);

  3028.     av_free(a->coeff);

  3029.     a->coeff= diff->coeff;

  3030.     a->length= diff->length;

  3031.     av_free(diff);

  3032. }

  3033. 

  3034. void sws_convVec(SwsVector *a, SwsVector *b){

  3035.     SwsVector *conv= sws_getConvVec(a, b);

  3036.     av_free(a->coeff);

  3037.     a->coeff= conv->coeff;

  3038.     a->length= conv->length;

  3039.     av_free(conv);

  3040. }

  3041. 

  3042. SwsVector *sws_cloneVec(SwsVector *a){

  3043.     double *coeff= av_malloc(a->length*sizeof(double));

  3044.     int i;

  3045.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3046. 

  3047.     vec->coeff= coeff;

  3048.     vec->length= a->length;

  3049. 

  3050.     for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];

  3051. 

  3052.     return vec;

  3053. }

  3054. 

  3055. void sws_printVec(SwsVector *a){

  3056.     int i;

  3057.     double max=0;

  3058.     double min=0;

  3059.     double range;

  3060. 

  3061.     for (i=0; i<a->length; i++)

  3062.         if (a->coeff[i]>max) max= a->coeff[i];

  3063. 

  3064.     for (i=0; i<a->length; i++)

  3065.         if (a->coeff[i]<min) min= a->coeff[i];

  3066. 

  3067.     range= max - min;

  3068. 

  3069.     for (i=0; i<a->length; i++)

  3070.     {

  3071.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  3072.         av_log(NULL, AV_LOG_DEBUG, "%1.3f ", a->coeff[i]);

  3073.         for (;x>0; x--) av_log(NULL, AV_LOG_DEBUG, " ");

  3074.         av_log(NULL, AV_LOG_DEBUG, "|\n");

  3075.     }

  3076. }

  3077. 

  3078. void sws_freeVec(SwsVector *a){

  3079.     if (!a) return;

  3080.     av_freep(&a->coeff);

  3081.     a->length=0;

  3082.     av_free(a);

  3083. }

  3084. 

  3085. void sws_freeFilter(SwsFilter *filter){

  3086.     if (!filter) return;

  3087. 

  3088.     if (filter->lumH) sws_freeVec(filter->lumH);

  3089.     if (filter->lumV) sws_freeVec(filter->lumV);

  3090.     if (filter->chrH) sws_freeVec(filter->chrH);

  3091.     if (filter->chrV) sws_freeVec(filter->chrV);

  3092.     av_free(filter);

  3093. }

  3094. 

  3095. 

  3096. void sws_freeContext(SwsContext *c){

  3097.     int i;

  3098.     if (!c) return;

  3099. 

  3100.     if (c->lumPixBuf)

  3101.     {

  3102.         for (i=0; i<c->vLumBufSize; i++)

  3103.             av_freep(&c->lumPixBuf[i]);

  3104.         av_freep(&c->lumPixBuf);

  3105.     }

  3106. 

  3107.     if (c->chrPixBuf)

  3108.     {

  3109.         for (i=0; i<c->vChrBufSize; i++)

  3110.             av_freep(&c->chrPixBuf[i]);

  3111.         av_freep(&c->chrPixBuf);

  3112.     }

  3113. 

  3114.     av_freep(&c->vLumFilter);

  3115.     av_freep(&c->vChrFilter);

  3116.     av_freep(&c->hLumFilter);

  3117.     av_freep(&c->hChrFilter);

  3118. #ifdef HAVE_ALTIVEC

  3119.     av_freep(&c->vYCoeffsBank);

  3120.     av_freep(&c->vCCoeffsBank);

  3121. #endif

  3122. 

  3123.     av_freep(&c->vLumFilterPos);

  3124.     av_freep(&c->vChrFilterPos);

  3125.     av_freep(&c->hLumFilterPos);

  3126.     av_freep(&c->hChrFilterPos);

  3127. 

  3128. #if defined(ARCH_X86) && defined(CONFIG_GPL)

  3129. #ifdef MAP_ANONYMOUS

  3130.     if (c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);

  3131.     if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);

  3132. #else

  3133.     av_free(c->funnyYCode);

  3134.     av_free(c->funnyUVCode);

  3135. #endif

  3136.     c->funnyYCode=NULL;

  3137.     c->funnyUVCode=NULL;

  3138. #endif /* defined(ARCH_X86) */

  3139. 

  3140.     av_freep(&c->lumMmx2Filter);

  3141.     av_freep(&c->chrMmx2Filter);

  3142.     av_freep(&c->lumMmx2FilterPos);

  3143.     av_freep(&c->chrMmx2FilterPos);

  3144.     av_freep(&c->yuvTable);

  3145. 

  3146.     av_free(c);

  3147. }

  3148. 

  3149. /**

  3150.  * Checks if context is valid or reallocs a new one instead.

  3151.  * If context is NULL, just calls sws_getContext() to get a new one.

  3152.  * Otherwise, checks if the parameters are the same already saved in context.

  3153.  * If that is the case, returns the current context.

  3154.  * Otherwise, frees context and gets a new one.

  3155.  *

  3156.  * Be warned that srcFilter, dstFilter are not checked, they are

  3157.  * asumed to remain valid.

  3158.  */

  3159. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  3160.                                         int srcW, int srcH, enum PixelFormat srcFormat,

  3161.                                         int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  3162.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)

  3163. {

  3164.     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};

  3165. 

  3166.     if (!param)

  3167.         param = default_param;

  3168. 

  3169.     if (context) {

  3170.         if (context->srcW != srcW || context->srcH != srcH ||

  3171.             context->srcFormat != srcFormat ||

  3172.             context->dstW != dstW || context->dstH != dstH ||

  3173.             context->dstFormat != dstFormat || context->flags != flags ||

  3174.             context->param[0] != param[0] || context->param[1] != param[1])

  3175.         {

  3176.             sws_freeContext(context);

  3177.             context = NULL;

  3178.         }

  3179.     }

  3180.     if (!context) {

  3181.         return sws_getContext(srcW, srcH, srcFormat,

  3182.                               dstW, dstH, dstFormat, flags,

  3183.                               srcFilter, dstFilter, param);

  3184.     }

  3185.     return context;

  3186. }