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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.         default:

  456.             return "Unknown format";

  457.     }

  458. }

  459. 

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

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

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

  463. {

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

  465.     int i;

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

  467.     {

  468.         int val=1<<18;

  469.         int j;

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

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

  472. 

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

  474.     }

  475. 

  476.     if (uDest)

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

  478.         {

  479.             int u=1<<18;

  480.             int v=1<<18;

  481.             int j;

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

  483.             {

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

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

  486.             }

  487. 

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

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

  490.         }

  491. }

  492. 

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

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

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

  496. {

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

  498.     int i;

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

  500.     {

  501.         int val=1<<18;

  502.         int j;

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

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

  505. 

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

  507.     }

  508. 

  509.     if (!uDest)

  510.         return;

  511. 

  512.     if (dstFormat == PIX_FMT_NV12)

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

  514.         {

  515.             int u=1<<18;

  516.             int v=1<<18;

  517.             int j;

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

  519.             {

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

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

  522.             }

  523. 

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

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

  526.         }

  527.     else

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

  529.         {

  530.             int u=1<<18;

  531.             int v=1<<18;

  532.             int j;

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

  534.             {

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

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

  537.             }

  538. 

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

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

  541.         }

  542. }

  543. 

  544. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type) \

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

  546.         int j;\

  547.         int Y1 = 1<<18;\

  548.         int Y2 = 1<<18;\

  549.         int U  = 1<<18;\

  550.         int V  = 1<<18;\

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

  552.         const int i2= 2*i;\

  553.         \

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

  555.         {\

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

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

  558.         }\

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

  560.         {\

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

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

  563.         }\

  564.         Y1>>=19;\

  565.         Y2>>=19;\

  566.         U >>=19;\

  567.         V >>=19;\

  568. 

  569. #define YSCALE_YUV_2_PACKEDX_C(type) \

  570.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type)\

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

  572.         {\

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

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

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

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

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

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

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

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

  581.         }

  582. 

  583. #define YSCALE_YUV_2_PACKEDX_FULL_C \

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

  585.         int j;\

  586.         int Y = 0;\

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

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

  589.         int R,G,B;\

  590.         \

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

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

  593.         }\

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

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

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

  597.         }\

  598.         Y >>=10;\

  599.         U >>=10;\

  600.         V >>=10;\

  601. 

  602. #define YSCALE_YUV_2_RGBX_FULL_C(rnd) \

  603.     YSCALE_YUV_2_PACKEDX_FULL_C\

  604.         Y-= c->yuv2rgb_y_offset;\

  605.         Y*= c->yuv2rgb_y_coeff;\

  606.         Y+= rnd;\

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

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

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

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

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

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

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

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

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

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

  617.         }\

  618. 

  619. 

  620. #define YSCALE_YUV_2_GRAY16_C \

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

  622.         int j;\

  623.         int Y1 = 1<<18;\

  624.         int Y2 = 1<<18;\

  625.         int U  = 1<<18;\

  626.         int V  = 1<<18;\

  627.         \

  628.         const int i2= 2*i;\

  629.         \

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

  631.         {\

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

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

  634.         }\

  635.         Y1>>=11;\

  636.         Y2>>=11;\

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

  638.         {\

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

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

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

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

  643.         }

  644. 

  645. #define YSCALE_YUV_2_RGBX_C(type) \

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

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

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

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

  650. 

  651. #define YSCALE_YUV_2_PACKED2_C   \

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

  653.         const int i2= 2*i;       \

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

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

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

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

  658. 

  659. #define YSCALE_YUV_2_GRAY16_2_C   \

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

  661.         const int i2= 2*i;       \

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

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

  664. 

  665. #define YSCALE_YUV_2_RGB2_C(type) \

  666.     YSCALE_YUV_2_PACKED2_C\

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

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

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

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

  671. 

  672. #define YSCALE_YUV_2_PACKED1_C \

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

  674.         const int i2= 2*i;\

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

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

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

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

  679. 

  680. #define YSCALE_YUV_2_GRAY16_1_C \

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

  682.         const int i2= 2*i;\

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

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

  685. 

  686. #define YSCALE_YUV_2_RGB1_C(type) \

  687.     YSCALE_YUV_2_PACKED1_C\

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

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

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

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

  692. 

  693. #define YSCALE_YUV_2_PACKED1B_C \

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

  695.         const int i2= 2*i;\

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

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

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

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

  700. 

  701. #define YSCALE_YUV_2_RGB1B_C(type) \

  702.     YSCALE_YUV_2_PACKED1B_C\

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

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

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

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

  707. 

  708. #define YSCALE_YUV_2_MONO2_C \

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

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

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

  712.         int acc;\

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

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

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

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

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

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

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

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

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

  722.         dest++;\

  723.     }\

  724. 

  725. 

  726. #define YSCALE_YUV_2_MONOX_C \

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

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

  729.     int acc=0;\

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

  731.         int j;\

  732.         int Y1=1<<18;\

  733.         int Y2=1<<18;\

  734. \

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

  736.         {\

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

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

  739.         }\

  740.         Y1>>=19;\

  741.         Y2>>=19;\

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

  743.         {\

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

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

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

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

  748.         }\

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

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

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

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

  753.             dest++;\

  754.         }\

  755.     }

  756. 

  757. 

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

  759.     switch(c->dstFormat)\

  760.     {\

  761.     case PIX_FMT_RGB32:\

  762.     case PIX_FMT_BGR32:\

  763.     case PIX_FMT_RGB32_1:\

  764.     case PIX_FMT_BGR32_1:\

  765.         func(uint32_t)\

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

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

  768.         }                \

  769.         break;\

  770.     case PIX_FMT_RGB24:\

  771.         func(uint8_t)\

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

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

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

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

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

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

  778.             dest+=6;\

  779.         }\

  780.         break;\

  781.     case PIX_FMT_BGR24:\

  782.         func(uint8_t)\

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

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

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

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

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

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

  789.             dest+=6;\

  790.         }\

  791.         break;\

  792.     case PIX_FMT_RGB565:\

  793.     case PIX_FMT_BGR565:\

  794.         {\

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

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

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

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

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

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

  801.             func(uint16_t)\

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

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

  804.             }\

  805.         }\

  806.         break;\

  807.     case PIX_FMT_RGB555:\

  808.     case PIX_FMT_BGR555:\

  809.         {\

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

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

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

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

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

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

  816.             func(uint16_t)\

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

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

  819.             }\

  820.         }\

  821.         break;\

  822.     case PIX_FMT_RGB8:\

  823.     case PIX_FMT_BGR8:\

  824.         {\

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

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

  827.             func(uint8_t)\

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

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

  830.             }\

  831.         }\

  832.         break;\

  833.     case PIX_FMT_RGB4:\

  834.     case PIX_FMT_BGR4:\

  835.         {\

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

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

  838.             func(uint8_t)\

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

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

  841.             }\

  842.         }\

  843.         break;\

  844.     case PIX_FMT_RGB4_BYTE:\

  845.     case PIX_FMT_BGR4_BYTE:\

  846.         {\

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

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

  849.             func(uint8_t)\

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

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

  852.             }\

  853.         }\

  854.         break;\

  855.     case PIX_FMT_MONOBLACK:\

  856.     case PIX_FMT_MONOWHITE:\

  857.         {\

  858.             func_monoblack\

  859.         }\

  860.         break;\

  861.     case PIX_FMT_YUYV422:\

  862.         func2\

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

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

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

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

  867.         }                \

  868.         break;\

  869.     case PIX_FMT_UYVY422:\

  870.         func2\

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

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

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

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

  875.         }                \

  876.         break;\

  877.     case PIX_FMT_GRAY16BE:\

  878.         func_g16\

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

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

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

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

  883.         }                \

  884.         break;\

  885.     case PIX_FMT_GRAY16LE:\

  886.         func_g16\

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

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

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

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

  891.         }                \

  892.         break;\

  893.     }\

  894. 

  895. 

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

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

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

  899. {

  900.     int i;

  901.     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)

  902. }

  903. 

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

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

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

  907. {

  908.     int i;

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

  910.     int aidx= 3;

  911. 

  912.     switch(c->dstFormat){

  913.     case PIX_FMT_ARGB:

  914.         dest++;

  915.         aidx= 0;

  916.     case PIX_FMT_RGB24:

  917.         aidx--;

  918.     case PIX_FMT_RGBA:

  919.         YSCALE_YUV_2_RGBX_FULL_C(1<<21)

  920.             dest[aidx]= 0;

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

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

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

  924.             dest+= step;

  925.         }

  926.         break;

  927.     case PIX_FMT_ABGR:

  928.         dest++;

  929.         aidx= 0;

  930.     case PIX_FMT_BGR24:

  931.         aidx--;

  932.     case PIX_FMT_BGRA:

  933.         YSCALE_YUV_2_RGBX_FULL_C(1<<21)

  934.             dest[aidx]= 0;

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

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

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

  938.             dest+= step;

  939.         }

  940.         break;

  941.     default:

  942.         assert(0);

  943.     }

  944. }

  945. 

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

  947. //Plain C versions

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

  949. #define COMPILE_C

  950. #endif

  951. 

  952. #ifdef ARCH_POWERPC

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

  954. #define COMPILE_ALTIVEC

  955. #endif //HAVE_ALTIVEC

  956. #endif //ARCH_POWERPC

  957. 

  958. #if defined(ARCH_X86)

  959. 

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

  961. #define COMPILE_MMX

  962. #endif

  963. 

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

  965. #define COMPILE_MMX2

  966. #endif

  967. 

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

  969. #define COMPILE_3DNOW

  970. #endif

  971. #endif //ARCH_X86 || ARCH_X86_64

  972. 

  973. #undef HAVE_MMX

  974. #undef HAVE_MMX2

  975. #undef HAVE_3DNOW

  976. 

  977. #ifdef COMPILE_C

  978. #undef HAVE_MMX

  979. #undef HAVE_MMX2

  980. #undef HAVE_3DNOW

  981. #undef HAVE_ALTIVEC

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

  983. #include "swscale_template.c"

  984. #endif

  985. 

  986. #ifdef COMPILE_ALTIVEC

  987. #undef RENAME

  988. #define HAVE_ALTIVEC

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

  990. #include "swscale_template.c"

  991. #endif

  992. 

  993. #if defined(ARCH_X86)

  994. 

  995. //X86 versions

  996. /*

  997. #undef RENAME

  998. #undef HAVE_MMX

  999. #undef HAVE_MMX2

  1000. #undef HAVE_3DNOW

  1001. #define ARCH_X86

  1002. #define RENAME(a) a ## _X86

  1003. #include "swscale_template.c"

  1004. */

  1005. //MMX versions

  1006. #ifdef COMPILE_MMX

  1007. #undef RENAME

  1008. #define HAVE_MMX

  1009. #undef HAVE_MMX2

  1010. #undef HAVE_3DNOW

  1011. #define RENAME(a) a ## _MMX

  1012. #include "swscale_template.c"

  1013. #endif

  1014. 

  1015. //MMX2 versions

  1016. #ifdef COMPILE_MMX2

  1017. #undef RENAME

  1018. #define HAVE_MMX

  1019. #define HAVE_MMX2

  1020. #undef HAVE_3DNOW

  1021. #define RENAME(a) a ## _MMX2

  1022. #include "swscale_template.c"

  1023. #endif

  1024. 

  1025. //3DNOW versions

  1026. #ifdef COMPILE_3DNOW

  1027. #undef RENAME

  1028. #define HAVE_MMX

  1029. #undef HAVE_MMX2

  1030. #define HAVE_3DNOW

  1031. #define RENAME(a) a ## _3DNow

  1032. #include "swscale_template.c"

  1033. #endif

  1034. 

  1035. #endif //ARCH_X86 || ARCH_X86_64

  1036. 

  1037. // minor note: the HAVE_xyz is messed up after that line so don't use it

  1038. 

  1039. static double getSplineCoeff(double a, double b, double c, double d, double dist)

  1040. {

  1041. //    printf("%f %f %f %f %f\n", a,b,c,d,dist);

  1042.     if (dist<=1.0)      return ((d*dist + c)*dist + b)*dist +a;

  1043.     else                return getSplineCoeff(        0.0,

  1044.                                              b+ 2.0*c + 3.0*d,

  1045.                                                     c + 3.0*d,

  1046.                                             -b- 3.0*c - 6.0*d,

  1047.                                             dist-1.0);

  1048. }

  1049. 

  1050. static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,

  1051.                              int srcW, int dstW, int filterAlign, int one, int flags,

  1052.                              SwsVector *srcFilter, SwsVector *dstFilter, double param[2])

  1053. {

  1054.     int i;

  1055.     int filterSize;

  1056.     int filter2Size;

  1057.     int minFilterSize;

  1058.     int64_t *filter=NULL;

  1059.     int64_t *filter2=NULL;

  1060.     const int64_t fone= 1LL<<54;

  1061.     int ret= -1;

  1062. #if defined(ARCH_X86)

  1063.     if (flags & SWS_CPU_CAPS_MMX)

  1064.         __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)

  1065. #endif

  1066. 

  1067.     // Note the +1 is for the MMXscaler which reads over the end

  1068.     *filterPos = av_malloc((dstW+1)*sizeof(int16_t));

  1069. 

  1070.     if (FFABS(xInc - 0x10000) <10) // unscaled

  1071.     {

  1072.         int i;

  1073.         filterSize= 1;

  1074.         filter= av_mallocz(dstW*sizeof(*filter)*filterSize);

  1075. 

  1076.         for (i=0; i<dstW; i++)

  1077.         {

  1078.             filter[i*filterSize]= fone;

  1079.             (*filterPos)[i]=i;

  1080.         }

  1081. 

  1082.     }

  1083.     else if (flags&SWS_POINT) // lame looking point sampling mode

  1084.     {

  1085.         int i;

  1086.         int xDstInSrc;

  1087.         filterSize= 1;

  1088.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1089. 

  1090.         xDstInSrc= xInc/2 - 0x8000;

  1091.         for (i=0; i<dstW; i++)

  1092.         {

  1093.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1094. 

  1095.             (*filterPos)[i]= xx;

  1096.             filter[i]= fone;

  1097.             xDstInSrc+= xInc;

  1098.         }

  1099.     }

  1100.     else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale

  1101.     {

  1102.         int i;

  1103.         int xDstInSrc;

  1104.         if      (flags&SWS_BICUBIC) filterSize= 4;

  1105.         else if (flags&SWS_X      ) filterSize= 4;

  1106.         else                        filterSize= 2; // SWS_BILINEAR / SWS_AREA

  1107.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1108. 

  1109.         xDstInSrc= xInc/2 - 0x8000;

  1110.         for (i=0; i<dstW; i++)

  1111.         {

  1112.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1113.             int j;

  1114. 

  1115.             (*filterPos)[i]= xx;

  1116.                 //Bilinear upscale / linear interpolate / Area averaging

  1117.                 for (j=0; j<filterSize; j++)

  1118.                 {

  1119.                     int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);

  1120.                     if (coeff<0) coeff=0;

  1121.                     filter[i*filterSize + j]= coeff;

  1122.                     xx++;

  1123.                 }

  1124.             xDstInSrc+= xInc;

  1125.         }

  1126.     }

  1127.     else

  1128.     {

  1129.         int xDstInSrc;

  1130.         int sizeFactor;

  1131. 

  1132.         if      (flags&SWS_BICUBIC)      sizeFactor=  4;

  1133.         else if (flags&SWS_X)            sizeFactor=  8;

  1134.         else if (flags&SWS_AREA)         sizeFactor=  1; //downscale only, for upscale it is bilinear

  1135.         else if (flags&SWS_GAUSS)        sizeFactor=  8;   // infinite ;)

  1136.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;

  1137.         else if (flags&SWS_SINC)         sizeFactor= 20; // infinite ;)

  1138.         else if (flags&SWS_SPLINE)       sizeFactor= 20;  // infinite ;)

  1139.         else if (flags&SWS_BILINEAR)     sizeFactor=  2;

  1140.         else {

  1141.             sizeFactor= 0; //GCC warning killer

  1142.             assert(0);

  1143.         }

  1144. 

  1145.         if (xInc <= 1<<16)      filterSize= 1 + sizeFactor; // upscale

  1146.         else                    filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;

  1147. 

  1148.         if (filterSize > srcW-2) filterSize=srcW-2;

  1149. 

  1150.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1151. 

  1152.         xDstInSrc= xInc - 0x10000;

  1153.         for (i=0; i<dstW; i++)

  1154.         {

  1155.             int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);

  1156.             int j;

  1157.             (*filterPos)[i]= xx;

  1158.             for (j=0; j<filterSize; j++)

  1159.             {

  1160.                 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;

  1161.                 double floatd;

  1162.                 int64_t coeff;

  1163. 

  1164.                 if (xInc > 1<<16)

  1165.                     d= d*dstW/srcW;

  1166.                 floatd= d * (1.0/(1<<30));

  1167. 

  1168.                 if (flags & SWS_BICUBIC)

  1169.                 {

  1170.                     int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] :   0) * (1<<24);

  1171.                     int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);

  1172.                     int64_t dd = ( d*d)>>30;

  1173.                     int64_t ddd= (dd*d)>>30;

  1174. 

  1175.                     if      (d < 1LL<<30)

  1176.                         coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);

  1177.                     else if (d < 1LL<<31)

  1178.                         coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);

  1179.                     else

  1180.                         coeff=0.0;

  1181.                     coeff *= fone>>(30+24);

  1182.                 }

  1183. /*                else if (flags & SWS_X)

  1184.                 {

  1185.                     double p= param ? param*0.01 : 0.3;

  1186.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1187.                     coeff*= pow(2.0, - p*d*d);

  1188.                 }*/

  1189.                 else if (flags & SWS_X)

  1190.                 {

  1191.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1192.                     double c;

  1193. 

  1194.                     if (floatd<1.0)

  1195.                         c = cos(floatd*PI);

  1196.                     else

  1197.                         c=-1.0;

  1198.                     if (c<0.0)      c= -pow(-c, A);

  1199.                     else            c=  pow( c, A);

  1200.                     coeff= (c*0.5 + 0.5)*fone;

  1201.                 }

  1202.                 else if (flags & SWS_AREA)

  1203.                 {

  1204.                     int64_t d2= d - (1<<29);

  1205.                     if      (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));

  1206.                     else if (d2*xInc <  (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));

  1207.                     else coeff=0.0;

  1208.                     coeff *= fone>>(30+16);

  1209.                 }

  1210.                 else if (flags & SWS_GAUSS)

  1211.                 {

  1212.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1213.                     coeff = (pow(2.0, - p*floatd*floatd))*fone;

  1214.                 }

  1215.                 else if (flags & SWS_SINC)

  1216.                 {

  1217.                     coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;

  1218.                 }

  1219.                 else if (flags & SWS_LANCZOS)

  1220.                 {

  1221.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1222.                     coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;

  1223.                     if (floatd>p) coeff=0;

  1224.                 }

  1225.                 else if (flags & SWS_BILINEAR)

  1226.                 {

  1227.                     coeff= (1<<30) - d;

  1228.                     if (coeff<0) coeff=0;

  1229.                     coeff *= fone >> 30;

  1230.                 }

  1231.                 else if (flags & SWS_SPLINE)

  1232.                 {

  1233.                     double p=-2.196152422706632;

  1234.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;

  1235.                 }

  1236.                 else {

  1237.                     coeff= 0.0; //GCC warning killer

  1238.                     assert(0);

  1239.                 }

  1240. 

  1241.                 filter[i*filterSize + j]= coeff;

  1242.                 xx++;

  1243.             }

  1244.             xDstInSrc+= 2*xInc;

  1245.         }

  1246.     }

  1247. 

  1248.     /* apply src & dst Filter to filter -> filter2

  1249.        av_free(filter);

  1250.     */

  1251.     assert(filterSize>0);

  1252.     filter2Size= filterSize;

  1253.     if (srcFilter) filter2Size+= srcFilter->length - 1;

  1254.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1255.     assert(filter2Size>0);

  1256.     filter2= av_mallocz(filter2Size*dstW*sizeof(*filter2));

  1257. 

  1258.     for (i=0; i<dstW; i++)

  1259.     {

  1260.         int j, k;

  1261. 

  1262.         if(srcFilter){

  1263.             for (k=0; k<srcFilter->length; k++){

  1264.                 for (j=0; j<filterSize; j++)

  1265.                     filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];

  1266.             }

  1267.         }else{

  1268.             for (j=0; j<filterSize; j++)

  1269.                 filter2[i*filter2Size + j]= filter[i*filterSize + j];

  1270.         }

  1271.         //FIXME dstFilter

  1272. 

  1273.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1274.     }

  1275.     av_freep(&filter);

  1276. 

  1277.     /* try to reduce the filter-size (step1 find size and shift left) */

  1278.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1279.     minFilterSize= 0;

  1280.     for (i=dstW-1; i>=0; i--)

  1281.     {

  1282.         int min= filter2Size;

  1283.         int j;

  1284.         int64_t cutOff=0.0;

  1285. 

  1286.         /* get rid off near zero elements on the left by shifting left */

  1287.         for (j=0; j<filter2Size; j++)

  1288.         {

  1289.             int k;

  1290.             cutOff += FFABS(filter2[i*filter2Size]);

  1291. 

  1292.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1293. 

  1294.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1295.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1296. 

  1297.             // Move filter coeffs left

  1298.             for (k=1; k<filter2Size; k++)

  1299.                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1300.             filter2[i*filter2Size + k - 1]= 0;

  1301.             (*filterPos)[i]++;

  1302.         }

  1303. 

  1304.         cutOff=0;

  1305.         /* count near zeros on the right */

  1306.         for (j=filter2Size-1; j>0; j--)

  1307.         {

  1308.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1309. 

  1310.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1311.             min--;

  1312.         }

  1313. 

  1314.         if (min>minFilterSize) minFilterSize= min;

  1315.     }

  1316. 

  1317.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1318.         // we can handle the special case 4,

  1319.         // so we don't want to go to the full 8

  1320.         if (minFilterSize < 5)

  1321.             filterAlign = 4;

  1322. 

  1323.         // we really don't want to waste our time

  1324.         // doing useless computation, so fall-back on

  1325.         // the scalar C code for very small filter.

  1326.         // vectorizing is worth it only if you have

  1327.         // decent-sized vector.

  1328.         if (minFilterSize < 3)

  1329.             filterAlign = 1;

  1330.     }

  1331. 

  1332.     if (flags & SWS_CPU_CAPS_MMX) {

  1333.         // special case for unscaled vertical filtering

  1334.         if (minFilterSize == 1 && filterAlign == 2)

  1335.             filterAlign= 1;

  1336.     }

  1337. 

  1338.     assert(minFilterSize > 0);

  1339.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1340.     assert(filterSize > 0);

  1341.     filter= av_malloc(filterSize*dstW*sizeof(*filter));

  1342.     if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)

  1343.         goto error;

  1344.     *outFilterSize= filterSize;

  1345. 

  1346.     if (flags&SWS_PRINT_INFO)

  1347.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1348.     /* try to reduce the filter-size (step2 reduce it) */

  1349.     for (i=0; i<dstW; i++)

  1350.     {

  1351.         int j;

  1352. 

  1353.         for (j=0; j<filterSize; j++)

  1354.         {

  1355.             if (j>=filter2Size) filter[i*filterSize + j]= 0;

  1356.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1357.             if((flags & SWS_BITEXACT) && j>=minFilterSize)

  1358.                 filter[i*filterSize + j]= 0;

  1359.         }

  1360.     }

  1361. 

  1362. 

  1363.     //FIXME try to align filterpos if possible

  1364. 

  1365.     //fix borders

  1366.     for (i=0; i<dstW; i++)

  1367.     {

  1368.         int j;

  1369.         if ((*filterPos)[i] < 0)

  1370.         {

  1371.             // Move filter coeffs left to compensate for filterPos

  1372.             for (j=1; j<filterSize; j++)

  1373.             {

  1374.                 int left= FFMAX(j + (*filterPos)[i], 0);

  1375.                 filter[i*filterSize + left] += filter[i*filterSize + j];

  1376.                 filter[i*filterSize + j]=0;

  1377.             }

  1378.             (*filterPos)[i]= 0;

  1379.         }

  1380. 

  1381.         if ((*filterPos)[i] + filterSize > srcW)

  1382.         {

  1383.             int shift= (*filterPos)[i] + filterSize - srcW;

  1384.             // Move filter coeffs right to compensate for filterPos

  1385.             for (j=filterSize-2; j>=0; j--)

  1386.             {

  1387.                 int right= FFMIN(j + shift, filterSize-1);

  1388.                 filter[i*filterSize +right] += filter[i*filterSize +j];

  1389.                 filter[i*filterSize +j]=0;

  1390.             }

  1391.             (*filterPos)[i]= srcW - filterSize;

  1392.         }

  1393.     }

  1394. 

  1395.     // Note the +1 is for the MMXscaler which reads over the end

  1396.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1397.     *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));

  1398. 

  1399.     /* Normalize & Store in outFilter */

  1400.     for (i=0; i<dstW; i++)

  1401.     {

  1402.         int j;

  1403.         int64_t error=0;

  1404.         int64_t sum=0;

  1405. 

  1406.         for (j=0; j<filterSize; j++)

  1407.         {

  1408.             sum+= filter[i*filterSize + j];

  1409.         }

  1410.         sum= (sum + one/2)/ one;

  1411.         for (j=0; j<*outFilterSize; j++)

  1412.         {

  1413.             int64_t v= filter[i*filterSize + j] + error;

  1414.             int intV= ROUNDED_DIV(v, sum);

  1415.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1416.             error= v - intV*sum;

  1417.         }

  1418.     }

  1419. 

  1420.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1421.     for (i=0; i<*outFilterSize; i++)

  1422.     {

  1423.         int j= dstW*(*outFilterSize);

  1424.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1425.     }

  1426. 

  1427.     ret=0;

  1428. error:

  1429.     av_free(filter);

  1430.     av_free(filter2);

  1431.     return ret;

  1432. }

  1433. 

  1434. #ifdef COMPILE_MMX2

  1435. static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1436. {

  1437.     uint8_t *fragmentA;

  1438.     long imm8OfPShufW1A;

  1439.     long imm8OfPShufW2A;

  1440.     long fragmentLengthA;

  1441.     uint8_t *fragmentB;

  1442.     long imm8OfPShufW1B;

  1443.     long imm8OfPShufW2B;

  1444.     long fragmentLengthB;

  1445.     int fragmentPos;

  1446. 

  1447.     int xpos, i;

  1448. 

  1449.     // create an optimized horizontal scaling routine

  1450. 

  1451.     //code fragment

  1452. 

  1453.     __asm__ volatile(

  1454.         "jmp                         9f                 \n\t"

  1455.     // Begin

  1456.         "0:                                             \n\t"

  1457.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1458.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1459.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1460.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1461.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1462.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1463.         "1:                                             \n\t"

  1464.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1465.         "2:                                             \n\t"

  1466.         "psubw                    %%mm1, %%mm0          \n\t"

  1467.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1468.         "pmullw                   %%mm3, %%mm0          \n\t"

  1469.         "psllw                       $7, %%mm1          \n\t"

  1470.         "paddw                    %%mm1, %%mm0          \n\t"

  1471. 

  1472.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1473. 

  1474.         "add                         $8, %%"REG_a"      \n\t"

  1475.     // End

  1476.         "9:                                             \n\t"

  1477. //        "int $3                                         \n\t"

  1478.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1479.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1480.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1481.         "dec                         %1                 \n\t"

  1482.         "dec                         %2                 \n\t"

  1483.         "sub                         %0, %1             \n\t"

  1484.         "sub                         %0, %2             \n\t"

  1485.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1486.         "sub                         %0, %3             \n\t"

  1487. 

  1488. 

  1489.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1490.         "=r" (fragmentLengthA)

  1491.     );

  1492. 

  1493.     __asm__ volatile(

  1494.         "jmp                         9f                 \n\t"

  1495.     // Begin

  1496.         "0:                                             \n\t"

  1497.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1498.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1499.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1500.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1501.         "1:                                             \n\t"

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

  1503.         "2:                                             \n\t"

  1504.         "psubw                    %%mm1, %%mm0          \n\t"

  1505.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1506.         "pmullw                   %%mm3, %%mm0          \n\t"

  1507.         "psllw                       $7, %%mm1          \n\t"

  1508.         "paddw                    %%mm1, %%mm0          \n\t"

  1509. 

  1510.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1511. 

  1512.         "add                         $8, %%"REG_a"      \n\t"

  1513.     // End

  1514.         "9:                                             \n\t"

  1515. //        "int                       $3                   \n\t"

  1516.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1517.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1518.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1519.         "dec                         %1                 \n\t"

  1520.         "dec                         %2                 \n\t"

  1521.         "sub                         %0, %1             \n\t"

  1522.         "sub                         %0, %2             \n\t"

  1523.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1524.         "sub                         %0, %3             \n\t"

  1525. 

  1526. 

  1527.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1528.         "=r" (fragmentLengthB)

  1529.     );

  1530. 

  1531.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1532.     fragmentPos=0;

  1533. 

  1534.     for (i=0; i<dstW/numSplits; i++)

  1535.     {

  1536.         int xx=xpos>>16;

  1537. 

  1538.         if ((i&3) == 0)

  1539.         {

  1540.             int a=0;

  1541.             int b=((xpos+xInc)>>16) - xx;

  1542.             int c=((xpos+xInc*2)>>16) - xx;

  1543.             int d=((xpos+xInc*3)>>16) - xx;

  1544. 

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

  1546.             filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1547.             filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1548.             filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1549.             filterPos[i/2]= xx;

  1550. 

  1551.             if (d+1<4)

  1552.             {

  1553.                 int maxShift= 3-(d+1);

  1554.                 int shift=0;

  1555. 

  1556.                 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);

  1557. 

  1558.                 funnyCode[fragmentPos + imm8OfPShufW1B]=

  1559.                     (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);

  1560.                 funnyCode[fragmentPos + imm8OfPShufW2B]=

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

  1562. 

  1563.                 if (i+3>=dstW) shift=maxShift; //avoid overread

  1564.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1565. 

  1566.                 if (shift && i>=shift)

  1567.                 {

  1568.                     funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;

  1569.                     funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;

  1570.                     filterPos[i/2]-=shift;

  1571.                 }

  1572. 

  1573.                 fragmentPos+= fragmentLengthB;

  1574.             }

  1575.             else

  1576.             {

  1577.                 int maxShift= 3-d;

  1578.                 int shift=0;

  1579. 

  1580.                 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);

  1581. 

  1582.                 funnyCode[fragmentPos + imm8OfPShufW1A]=

  1583.                 funnyCode[fragmentPos + imm8OfPShufW2A]=

  1584.                     a | (b<<2) | (c<<4) | (d<<6);

  1585. 

  1586.                 if (i+4>=dstW) shift=maxShift; //avoid overread

  1587.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align

  1588. 

  1589.                 if (shift && i>=shift)

  1590.                 {

  1591.                     funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;

  1592.                     funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;

  1593.                     filterPos[i/2]-=shift;

  1594.                 }

  1595. 

  1596.                 fragmentPos+= fragmentLengthA;

  1597.             }

  1598. 

  1599.             funnyCode[fragmentPos]= RET;

  1600.         }

  1601.         xpos+=xInc;

  1602.     }

  1603.     filterPos[i/2]= xpos>>16; // needed to jump to the next part

  1604. }

  1605. #endif /* COMPILE_MMX2 */

  1606. 

  1607. static void globalInit(void){

  1608.     // generating tables:

  1609.     int i;

  1610.     for (i=0; i<768; i++){

  1611.         int c= av_clip_uint8(i-256);

  1612.         clip_table[i]=c;

  1613.     }

  1614. }

  1615. 

  1616. static SwsFunc getSwsFunc(int flags){

  1617. 

  1618. #if defined(RUNTIME_CPUDETECT) && defined (CONFIG_GPL)

  1619. #if defined(ARCH_X86)

  1620.     // ordered per speed fastest first

  1621.     if (flags & SWS_CPU_CAPS_MMX2)

  1622.         return swScale_MMX2;

  1623.     else if (flags & SWS_CPU_CAPS_3DNOW)

  1624.         return swScale_3DNow;

  1625.     else if (flags & SWS_CPU_CAPS_MMX)

  1626.         return swScale_MMX;

  1627.     else

  1628.         return swScale_C;

  1629. 

  1630. #else

  1631. #ifdef ARCH_POWERPC

  1632.     if (flags & SWS_CPU_CAPS_ALTIVEC)

  1633.         return swScale_altivec;

  1634.     else

  1635.         return swScale_C;

  1636. #endif

  1637.     return swScale_C;

  1638. #endif /* defined(ARCH_X86) */

  1639. #else //RUNTIME_CPUDETECT

  1640. #ifdef HAVE_MMX2

  1641.     return swScale_MMX2;

  1642. #elif defined (HAVE_3DNOW)

  1643.     return swScale_3DNow;

  1644. #elif defined (HAVE_MMX)

  1645.     return swScale_MMX;

  1646. #elif defined (HAVE_ALTIVEC)

  1647.     return swScale_altivec;

  1648. #else

  1649.     return swScale_C;

  1650. #endif

  1651. #endif //!RUNTIME_CPUDETECT

  1652. }

  1653. 

  1654. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1655.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1656.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1657.     /* Copy Y plane */

  1658.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1659.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1660.     else

  1661.     {

  1662.         int i;

  1663.         uint8_t *srcPtr= src[0];

  1664.         uint8_t *dstPtr= dst;

  1665.         for (i=0; i<srcSliceH; i++)

  1666.         {

  1667.             memcpy(dstPtr, srcPtr, c->srcW);

  1668.             srcPtr+= srcStride[0];

  1669.             dstPtr+= dstStride[0];

  1670.         }

  1671.     }

  1672.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1673.     if (c->dstFormat == PIX_FMT_NV12)

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

  1675.     else

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

  1677. 

  1678.     return srcSliceH;

  1679. }

  1680. 

  1681. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1682.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1683.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1684. 

  1685.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1686. 

  1687.     return srcSliceH;

  1688. }

  1689. 

  1690. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1691.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1692.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1693. 

  1694.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1695. 

  1696.     return srcSliceH;

  1697. }

  1698. 

  1699. static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1700.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1701.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1702. 

  1703.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1704. 

  1705.     return srcSliceH;

  1706. }

  1707. 

  1708. static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1709.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1710.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1711. 

  1712.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1713. 

  1714.     return srcSliceH;

  1715. }

  1716. 

  1717. static int pal2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1718.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  1719.     const enum PixelFormat srcFormat= c->srcFormat;

  1720.     const enum PixelFormat dstFormat= c->dstFormat;

  1721.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  1722.                  const uint8_t *palette)=NULL;

  1723.     int i;

  1724.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1725.     uint8_t *srcPtr= src[0];

  1726. 

  1727.     if (!usePal(srcFormat))

  1728.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1729.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1730. 

  1731.     switch(dstFormat){

  1732.     case PIX_FMT_RGB32  : conv = palette8topacked32; break;

  1733.     case PIX_FMT_BGR32  : conv = palette8topacked32; break;

  1734.     case PIX_FMT_BGR32_1: conv = palette8topacked32; break;

  1735.     case PIX_FMT_RGB32_1: conv = palette8topacked32; break;

  1736.     case PIX_FMT_RGB24  : conv = palette8topacked24; break;

  1737.     case PIX_FMT_BGR24  : conv = palette8topacked24; break;

  1738.     default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1739.                     sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1740.     }

  1741. 

  1742. 

  1743.     for (i=0; i<srcSliceH; i++) {

  1744.         conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  1745.         srcPtr+= srcStride[0];

  1746.         dstPtr+= dstStride[0];

  1747.     }

  1748. 

  1749.     return srcSliceH;

  1750. }

  1751. 

  1752. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  1753. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1754.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  1755.     const enum PixelFormat srcFormat= c->srcFormat;

  1756.     const enum PixelFormat dstFormat= c->dstFormat;

  1757.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  1758.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  1759.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1760.     const int dstId= fmt_depth(dstFormat) >> 2;

  1761.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1762. 

  1763.     /* BGR -> BGR */

  1764.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  1765.        || (isRGB(srcFormat) && isRGB(dstFormat))){

  1766.         switch(srcId | (dstId<<4)){

  1767.         case 0x34: conv= rgb16to15; break;

  1768.         case 0x36: conv= rgb24to15; break;

  1769.         case 0x38: conv= rgb32to15; break;

  1770.         case 0x43: conv= rgb15to16; break;

  1771.         case 0x46: conv= rgb24to16; break;

  1772.         case 0x48: conv= rgb32to16; break;

  1773.         case 0x63: conv= rgb15to24; break;

  1774.         case 0x64: conv= rgb16to24; break;

  1775.         case 0x68: conv= rgb32to24; break;

  1776.         case 0x83: conv= rgb15to32; break;

  1777.         case 0x84: conv= rgb16to32; break;

  1778.         case 0x86: conv= rgb24to32; break;

  1779.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1780.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1781.         }

  1782.     }else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  1783.              || (isRGB(srcFormat) && isBGR(dstFormat))){

  1784.         switch(srcId | (dstId<<4)){

  1785.         case 0x33: conv= rgb15tobgr15; break;

  1786.         case 0x34: conv= rgb16tobgr15; break;

  1787.         case 0x36: conv= rgb24tobgr15; break;

  1788.         case 0x38: conv= rgb32tobgr15; break;

  1789.         case 0x43: conv= rgb15tobgr16; break;

  1790.         case 0x44: conv= rgb16tobgr16; break;

  1791.         case 0x46: conv= rgb24tobgr16; break;

  1792.         case 0x48: conv= rgb32tobgr16; break;

  1793.         case 0x63: conv= rgb15tobgr24; break;

  1794.         case 0x64: conv= rgb16tobgr24; break;

  1795.         case 0x66: conv= rgb24tobgr24; break;

  1796.         case 0x68: conv= rgb32tobgr24; break;

  1797.         case 0x83: conv= rgb15tobgr32; break;

  1798.         case 0x84: conv= rgb16tobgr32; break;

  1799.         case 0x86: conv= rgb24tobgr32; break;

  1800.         case 0x88: conv= rgb32tobgr32; break;

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

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

  1803.         }

  1804.     }else{

  1805.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1806.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1807.     }

  1808. 

  1809.     if(conv)

  1810.     {

  1811.         uint8_t *srcPtr= src[0];

  1812.         if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)

  1813.             srcPtr += ALT32_CORR;

  1814. 

  1815.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  1816.             conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1817.         else

  1818.         {

  1819.             int i;

  1820.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1821. 

  1822.             for (i=0; i<srcSliceH; i++)

  1823.             {

  1824.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1825.                 srcPtr+= srcStride[0];

  1826.                 dstPtr+= dstStride[0];

  1827.             }

  1828.         }

  1829.     }

  1830.     return srcSliceH;

  1831. }

  1832. 

  1833. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1834.                               int srcSliceH, uint8_t* dst[], int dstStride[]){

  1835. 

  1836.     rgb24toyv12(

  1837.         src[0],

  1838.         dst[0]+ srcSliceY    *dstStride[0],

  1839.         dst[1]+(srcSliceY>>1)*dstStride[1],

  1840.         dst[2]+(srcSliceY>>1)*dstStride[2],

  1841.         c->srcW, srcSliceH,

  1842.         dstStride[0], dstStride[1], srcStride[0]);

  1843.     return srcSliceH;

  1844. }

  1845. 

  1846. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1847.                              int srcSliceH, uint8_t* dst[], int dstStride[]){

  1848.     int i;

  1849. 

  1850.     /* copy Y */

  1851.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  1852.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  1853.     else{

  1854.         uint8_t *srcPtr= src[0];

  1855.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1856. 

  1857.         for (i=0; i<srcSliceH; i++)

  1858.         {

  1859.             memcpy(dstPtr, srcPtr, c->srcW);

  1860.             srcPtr+= srcStride[0];

  1861.             dstPtr+= dstStride[0];

  1862.         }

  1863.     }

  1864. 

  1865.     if (c->dstFormat==PIX_FMT_YUV420P){

  1866.         planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);

  1867.         planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);

  1868.     }else{

  1869.         planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);

  1870.         planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);

  1871.     }

  1872.     return srcSliceH;

  1873. }

  1874. 

  1875. /* unscaled copy like stuff (assumes nearly identical formats) */

  1876. static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1877.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  1878. {

  1879.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1880.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1881.     else

  1882.     {

  1883.         int i;

  1884.         uint8_t *srcPtr= src[0];

  1885.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1886.         int length=0;

  1887. 

  1888.         /* universal length finder */

  1889.         while(length+c->srcW <= FFABS(dstStride[0])

  1890.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  1891.         assert(length!=0);

  1892. 

  1893.         for (i=0; i<srcSliceH; i++)

  1894.         {

  1895.             memcpy(dstPtr, srcPtr, length);

  1896.             srcPtr+= srcStride[0];

  1897.             dstPtr+= dstStride[0];

  1898.         }

  1899.     }

  1900.     return srcSliceH;

  1901. }

  1902. 

  1903. static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1904.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  1905. {

  1906.     int plane;

  1907.     for (plane=0; plane<3; plane++)

  1908.     {

  1909.         int length= plane==0 ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1910.         int y=      plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1911.         int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1912. 

  1913.         if ((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)

  1914.         {

  1915.             if (!isGray(c->dstFormat))

  1916.                 memset(dst[plane], 128, dstStride[plane]*height);

  1917.         }

  1918.         else

  1919.         {

  1920.             if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  1921.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  1922.             else

  1923.             {

  1924.                 int i;

  1925.                 uint8_t *srcPtr= src[plane];

  1926.                 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  1927.                 for (i=0; i<height; i++)

  1928.                 {

  1929.                     memcpy(dstPtr, srcPtr, length);

  1930.                     srcPtr+= srcStride[plane];

  1931.                     dstPtr+= dstStride[plane];

  1932.                 }

  1933.             }

  1934.         }

  1935.     }

  1936.     return srcSliceH;

  1937. }

  1938. 

  1939. static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1940.                         int srcSliceH, uint8_t* dst[], int dstStride[]){

  1941. 

  1942.     int length= c->srcW;

  1943.     int y=      srcSliceY;

  1944.     int height= srcSliceH;

  1945.     int i, j;

  1946.     uint8_t *srcPtr= src[0];

  1947.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  1948. 

  1949.     if (!isGray(c->dstFormat)){

  1950.         int height= -((-srcSliceH)>>c->chrDstVSubSample);

  1951.         memset(dst[1], 128, dstStride[1]*height);

  1952.         memset(dst[2], 128, dstStride[2]*height);

  1953.     }

  1954.     if (c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;

  1955.     for (i=0; i<height; i++)

  1956.     {

  1957.         for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  1958.         srcPtr+= srcStride[0];

  1959.         dstPtr+= dstStride[0];

  1960.     }

  1961.     return srcSliceH;

  1962. }

  1963. 

  1964. static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1965.                         int srcSliceH, uint8_t* dst[], int dstStride[]){

  1966. 

  1967.     int length= c->srcW;

  1968.     int y=      srcSliceY;

  1969.     int height= srcSliceH;

  1970.     int i, j;

  1971.     uint8_t *srcPtr= src[0];

  1972.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  1973.     for (i=0; i<height; i++)

  1974.     {

  1975.         for (j=0; j<length; j++)

  1976.         {

  1977.             dstPtr[j<<1] = srcPtr[j];

  1978.             dstPtr[(j<<1)+1] = srcPtr[j];

  1979.         }

  1980.         srcPtr+= srcStride[0];

  1981.         dstPtr+= dstStride[0];

  1982.     }

  1983.     return srcSliceH;

  1984. }

  1985. 

  1986. static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

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

  1988. 

  1989.     int length= c->srcW;

  1990.     int y=      srcSliceY;

  1991.     int height= srcSliceH;

  1992.     int i, j;

  1993.     uint16_t *srcPtr= (uint16_t*)src[0];

  1994.     uint16_t *dstPtr= (uint16_t*)(dst[0] + dstStride[0]*y/2);

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

  1996.     {

  1997.         for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);

  1998.         srcPtr+= srcStride[0]/2;

  1999.         dstPtr+= dstStride[0]/2;

  2000.     }

  2001.     return srcSliceH;

  2002. }

  2003. 

  2004. 

  2005. static void getSubSampleFactors(int *h, int *v, int format){

  2006.     switch(format){

  2007.     case PIX_FMT_UYVY422:

  2008.     case PIX_FMT_YUYV422:

  2009.         *h=1;

  2010.         *v=0;

  2011.         break;

  2012.     case PIX_FMT_YUV420P:

  2013.     case PIX_FMT_YUVA420P:

  2014.     case PIX_FMT_GRAY16BE:

  2015.     case PIX_FMT_GRAY16LE:

  2016.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  2017.     case PIX_FMT_NV12:

  2018.     case PIX_FMT_NV21:

  2019.         *h=1;

  2020.         *v=1;

  2021.         break;

  2022.     case PIX_FMT_YUV440P:

  2023.         *h=0;

  2024.         *v=1;

  2025.         break;

  2026.     case PIX_FMT_YUV410P:

  2027.         *h=2;

  2028.         *v=2;

  2029.         break;

  2030.     case PIX_FMT_YUV444P:

  2031.         *h=0;

  2032.         *v=0;

  2033.         break;

  2034.     case PIX_FMT_YUV422P:

  2035.         *h=1;

  2036.         *v=0;

  2037.         break;

  2038.     case PIX_FMT_YUV411P:

  2039.         *h=2;

  2040.         *v=0;

  2041.         break;

  2042.     default:

  2043.         *h=0;

  2044.         *v=0;

  2045.         break;

  2046.     }

  2047. }

  2048. 

  2049. static uint16_t roundToInt16(int64_t f){

  2050.     int r= (f + (1<<15))>>16;

  2051.          if (r<-0x7FFF) return 0x8000;

  2052.     else if (r> 0x7FFF) return 0x7FFF;

  2053.     else                return r;

  2054. }

  2055. 

  2056. /**

  2057.  * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]

  2058.  * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235

  2059.  * @return -1 if not supported

  2060.  */

  2061. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){

  2062.     int64_t crv =  inv_table[0];

  2063.     int64_t cbu =  inv_table[1];

  2064.     int64_t cgu = -inv_table[2];

  2065.     int64_t cgv = -inv_table[3];

  2066.     int64_t cy  = 1<<16;

  2067.     int64_t oy  = 0;

  2068. 

  2069.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  2070.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  2071. 

  2072.     c->brightness= brightness;

  2073.     c->contrast  = contrast;

  2074.     c->saturation= saturation;

  2075.     c->srcRange  = srcRange;

  2076.     c->dstRange  = dstRange;

  2077.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return 0;

  2078. 

  2079.     c->uOffset=   0x0400040004000400LL;

  2080.     c->vOffset=   0x0400040004000400LL;

  2081. 

  2082.     if (!srcRange){

  2083.         cy= (cy*255) / 219;

  2084.         oy= 16<<16;

  2085.     }else{

  2086.         crv= (crv*224) / 255;

  2087.         cbu= (cbu*224) / 255;

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

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

  2090.     }

  2091. 

  2092.     cy = (cy *contrast             )>>16;

  2093.     crv= (crv*contrast * saturation)>>32;

  2094.     cbu= (cbu*contrast * saturation)>>32;

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

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

  2097. 

  2098.     oy -= 256*brightness;

  2099. 

  2100.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  2101.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  2102.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  2103.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  2104.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  2105.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  2106. 

  2107.     c->yuv2rgb_y_coeff  = (int16_t)roundToInt16(cy <<13);

  2108.     c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);

  2109.     c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);

  2110.     c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);

  2111.     c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);

  2112.     c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);

  2113. 

  2114.     yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  2115.     //FIXME factorize

  2116. 

  2117. #ifdef COMPILE_ALTIVEC

  2118.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  2119.         yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);

  2120. #endif

  2121.     return 0;

  2122. }

  2123. 

  2124. /**

  2125.  * @return -1 if not supported

  2126.  */

  2127. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){

  2128.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2129. 

  2130.     *inv_table = c->srcColorspaceTable;

  2131.     *table     = c->dstColorspaceTable;

  2132.     *srcRange  = c->srcRange;

  2133.     *dstRange  = c->dstRange;

  2134.     *brightness= c->brightness;

  2135.     *contrast  = c->contrast;

  2136.     *saturation= c->saturation;

  2137. 

  2138.     return 0;

  2139. }

  2140. 

  2141. static int handle_jpeg(enum PixelFormat *format)

  2142. {

  2143.     switch (*format) {

  2144.         case PIX_FMT_YUVJ420P:

  2145.             *format = PIX_FMT_YUV420P;

  2146.             return 1;

  2147.         case PIX_FMT_YUVJ422P:

  2148.             *format = PIX_FMT_YUV422P;

  2149.             return 1;

  2150.         case PIX_FMT_YUVJ444P:

  2151.             *format = PIX_FMT_YUV444P;

  2152.             return 1;

  2153.         case PIX_FMT_YUVJ440P:

  2154.             *format = PIX_FMT_YUV440P;

  2155.             return 1;

  2156.         default:

  2157.             return 0;

  2158.     }

  2159. }

  2160. 

  2161. SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  2162.                            SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){

  2163. 

  2164.     SwsContext *c;

  2165.     int i;

  2166.     int usesVFilter, usesHFilter;

  2167.     int unscaled, needsDither;

  2168.     int srcRange, dstRange;

  2169.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2170. #if defined(ARCH_X86)

  2171.     if (flags & SWS_CPU_CAPS_MMX)

  2172.         __asm__ volatile("emms\n\t"::: "memory");

  2173. #endif

  2174. 

  2175. #if !defined(RUNTIME_CPUDETECT) || !defined (CONFIG_GPL) //ensure that the flags match the compiled variant if cpudetect is off

  2176.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2177. #ifdef HAVE_MMX2

  2178.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2179. #elif defined (HAVE_3DNOW)

  2180.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2181. #elif defined (HAVE_MMX)

  2182.     flags |= SWS_CPU_CAPS_MMX;

  2183. #elif defined (HAVE_ALTIVEC)

  2184.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2185. #elif defined (ARCH_BFIN)

  2186.     flags |= SWS_CPU_CAPS_BFIN;

  2187. #endif

  2188. #endif /* RUNTIME_CPUDETECT */

  2189.     if (clip_table[512] != 255) globalInit();

  2190.     if (!rgb15to16) sws_rgb2rgb_init(flags);

  2191. 

  2192.     unscaled = (srcW == dstW && srcH == dstH);

  2193.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2194.         && (fmt_depth(dstFormat))<24

  2195.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2196. 

  2197.     srcRange = handle_jpeg(&srcFormat);

  2198.     dstRange = handle_jpeg(&dstFormat);

  2199. 

  2200.     if (!isSupportedIn(srcFormat))

  2201.     {

  2202.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));

  2203.         return NULL;

  2204.     }

  2205.     if (!isSupportedOut(dstFormat))

  2206.     {

  2207.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));

  2208.         return NULL;

  2209.     }

  2210. 

  2211.     i= flags & ( SWS_POINT

  2212.                 |SWS_AREA

  2213.                 |SWS_BILINEAR

  2214.                 |SWS_FAST_BILINEAR

  2215.                 |SWS_BICUBIC

  2216.                 |SWS_X

  2217.                 |SWS_GAUSS

  2218.                 |SWS_LANCZOS

  2219.                 |SWS_SINC

  2220.                 |SWS_SPLINE

  2221.                 |SWS_BICUBLIN);

  2222.     if(!i || (i & (i-1)))

  2223.     {

  2224.         av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be choosen\n");

  2225.         return NULL;

  2226.     }

  2227. 

  2228.     /* sanity check */

  2229.     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

  2230.     {

  2231.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2232.                srcW, srcH, dstW, dstH);

  2233.         return NULL;

  2234.     }

  2235.     if(srcW > VOFW || dstW > VOFW){

  2236.         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile time max width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");

  2237.         return NULL;

  2238.     }

  2239. 

  2240.     if (!dstFilter) dstFilter= &dummyFilter;

  2241.     if (!srcFilter) srcFilter= &dummyFilter;

  2242. 

  2243.     c= av_mallocz(sizeof(SwsContext));

  2244. 

  2245.     c->av_class = &sws_context_class;

  2246.     c->srcW= srcW;

  2247.     c->srcH= srcH;

  2248.     c->dstW= dstW;

  2249.     c->dstH= dstH;

  2250.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2251.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2252.     c->flags= flags;

  2253.     c->dstFormat= dstFormat;

  2254.     c->srcFormat= srcFormat;

  2255.     c->vRounder= 4* 0x0001000100010001ULL;

  2256. 

  2257.     usesHFilter= usesVFilter= 0;

  2258.     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;

  2259.     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;

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

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

  2262.     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;

  2263.     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;

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

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

  2266. 

  2267.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2268.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2269. 

  2270.     // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation

  2271.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2272. 

  2273.     // drop some chroma lines if the user wants it

  2274.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2275.     c->chrSrcVSubSample+= c->vChrDrop;

  2276. 

  2277.     // drop every 2. pixel for chroma calculation unless user wants full chroma

  2278.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2279.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2280.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2281.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE

  2282.       && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2283.         c->chrSrcHSubSample=1;

  2284. 

  2285.     if (param){

  2286.         c->param[0] = param[0];

  2287.         c->param[1] = param[1];

  2288.     }else{

  2289.         c->param[0] =

  2290.         c->param[1] = SWS_PARAM_DEFAULT;

  2291.     }

  2292. 

  2293.     c->chrIntHSubSample= c->chrDstHSubSample;

  2294.     c->chrIntVSubSample= c->chrSrcVSubSample;

  2295. 

  2296.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2297.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2298.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2299.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2300.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2301. 

  2302.     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);

  2303. 

  2304.     /* unscaled special Cases */

  2305.     if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat)))

  2306.     {

  2307.         /* yv12_to_nv12 */

  2308.         if (srcFormat == PIX_FMT_YUV420P && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))

  2309.         {

  2310.             c->swScale= PlanarToNV12Wrapper;

  2311.         }

  2312. #ifdef CONFIG_GPL

  2313.         /* yuv2bgr */

  2314.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P) && (isBGR(dstFormat) || isRGB(dstFormat))

  2315.             && !(flags & SWS_ACCURATE_RND) && !(dstH&1))

  2316.         {

  2317.             c->swScale= yuv2rgb_get_func_ptr(c);

  2318.         }

  2319. #endif

  2320. 

  2321.         if (srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_BITEXACT))

  2322.         {

  2323.             c->swScale= yvu9toyv12Wrapper;

  2324.         }

  2325. 

  2326.         /* bgr24toYV12 */

  2327.         if (srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_ACCURATE_RND))

  2328.             c->swScale= bgr24toyv12Wrapper;

  2329. 

  2330.         /* rgb/bgr -> rgb/bgr (no dither needed forms) */

  2331.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2332.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2333.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2334.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2335.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2336.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2337.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2338.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2339.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2340.            && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  2341.                                              && dstFormat != PIX_FMT_RGB32_1

  2342.                                              && dstFormat != PIX_FMT_BGR32_1

  2343.            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2344.              c->swScale= rgb2rgbWrapper;

  2345. 

  2346.         if ((usePal(srcFormat) && (

  2347.                  dstFormat == PIX_FMT_RGB32   ||

  2348.                  dstFormat == PIX_FMT_RGB32_1 ||

  2349.                  dstFormat == PIX_FMT_RGB24   ||

  2350.                  dstFormat == PIX_FMT_BGR32   ||

  2351.                  dstFormat == PIX_FMT_BGR32_1 ||

  2352.                  dstFormat == PIX_FMT_BGR24)))

  2353.              c->swScale= pal2rgbWrapper;

  2354. 

  2355.         if (srcFormat == PIX_FMT_YUV422P)

  2356.         {

  2357.             if (dstFormat == PIX_FMT_YUYV422)

  2358.                 c->swScale= YUV422PToYuy2Wrapper;

  2359.             else if (dstFormat == PIX_FMT_UYVY422)

  2360.                 c->swScale= YUV422PToUyvyWrapper;

  2361.         }

  2362. 

  2363.         /* LQ converters if -sws 0 or -sws 4*/

  2364.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){

  2365.             /* yv12_to_yuy2 */

  2366.             if (srcFormat == PIX_FMT_YUV420P)

  2367.             {

  2368.                 if (dstFormat == PIX_FMT_YUYV422)

  2369.                     c->swScale= PlanarToYuy2Wrapper;

  2370.                 else if (dstFormat == PIX_FMT_UYVY422)

  2371.                     c->swScale= PlanarToUyvyWrapper;

  2372.             }

  2373.         }

  2374. 

  2375. #ifdef COMPILE_ALTIVEC

  2376.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2377.             srcFormat == PIX_FMT_YUV420P) {

  2378.           // unscaled YV12 -> packed YUV, we want speed

  2379.           if (dstFormat == PIX_FMT_YUYV422)

  2380.               c->swScale= yv12toyuy2_unscaled_altivec;

  2381.           else if (dstFormat == PIX_FMT_UYVY422)

  2382.               c->swScale= yv12touyvy_unscaled_altivec;

  2383.         }

  2384. #endif

  2385. 

  2386.         /* simple copy */

  2387.         if (  srcFormat == dstFormat

  2388.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2389.             || (isPlanarYUV(dstFormat) && isGray(srcFormat)))

  2390.         {

  2391.             if (isPacked(c->srcFormat))

  2392.                 c->swScale= packedCopy;

  2393.             else /* Planar YUV or gray */

  2394.                 c->swScale= planarCopy;

  2395.         }

  2396. 

  2397.         /* gray16{le,be} conversions */

  2398.         if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))

  2399.         {

  2400.             c->swScale= gray16togray;

  2401.         }

  2402.         if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))

  2403.         {

  2404.             c->swScale= graytogray16;

  2405.         }

  2406.         if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))

  2407.         {

  2408.             c->swScale= gray16swap;

  2409.         }

  2410. 

  2411. #ifdef ARCH_BFIN

  2412.         if (flags & SWS_CPU_CAPS_BFIN)

  2413.             ff_bfin_get_unscaled_swscale (c);

  2414. #endif

  2415. 

  2416.         if (c->swScale){

  2417.             if (flags&SWS_PRINT_INFO)

  2418.                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",

  2419.                                 sws_format_name(srcFormat), sws_format_name(dstFormat));

  2420.             return c;

  2421.         }

  2422.     }

  2423. 

  2424.     if (flags & SWS_CPU_CAPS_MMX2)

  2425.     {

  2426.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2427.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))

  2428.         {

  2429.             if (flags&SWS_PRINT_INFO)

  2430.                 av_log(c, AV_LOG_INFO, "output Width is not a multiple of 32 -> no MMX2 scaler\n");

  2431.         }

  2432.         if (usesHFilter) c->canMMX2BeUsed=0;

  2433.     }

  2434.     else

  2435.         c->canMMX2BeUsed=0;

  2436. 

  2437.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2438.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2439. 

  2440.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2441.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2442.     // n-2 is the last chrominance sample available

  2443.     // this is not perfect, but no one should notice the difference, the more correct variant

  2444.     // would be like the vertical one, but that would require some special code for the

  2445.     // first and last pixel

  2446.     if (flags&SWS_FAST_BILINEAR)

  2447.     {

  2448.         if (c->canMMX2BeUsed)

  2449.         {

  2450.             c->lumXInc+= 20;

  2451.             c->chrXInc+= 20;

  2452.         }

  2453.         //we don't use the x86asm scaler if mmx is available

  2454.         else if (flags & SWS_CPU_CAPS_MMX)

  2455.         {

  2456.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2457.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2458.         }

  2459.     }

  2460. 

  2461.     /* precalculate horizontal scaler filter coefficients */

  2462.     {

  2463.         const int filterAlign=

  2464.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2465.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2466.             1;

  2467. 

  2468.         initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2469.                    srcW      ,       dstW, filterAlign, 1<<14,

  2470.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2471.                    srcFilter->lumH, dstFilter->lumH, c->param);

  2472.         initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2473.                    c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2474.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2475.                    srcFilter->chrH, dstFilter->chrH, c->param);

  2476. 

  2477. #define MAX_FUNNY_CODE_SIZE 10000

  2478. #if defined(COMPILE_MMX2)

  2479. // can't downscale !!!

  2480.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))

  2481.         {

  2482. #ifdef MAP_ANONYMOUS

  2483.             c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2484.             c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2485. #else

  2486.             c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2487.             c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2488. #endif

  2489. 

  2490.             c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));

  2491.             c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));

  2492.             c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));

  2493.             c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));

  2494. 

  2495.             initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2496.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2497.         }

  2498. #endif /* defined(COMPILE_MMX2) */

  2499.     } // Init Horizontal stuff

  2500. 

  2501. 

  2502. 

  2503.     /* precalculate vertical scaler filter coefficients */

  2504.     {

  2505.         const int filterAlign=

  2506.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2507.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2508.             1;

  2509. 

  2510.         initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2511.                    srcH      ,        dstH, filterAlign, (1<<12),

  2512.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2513.                    srcFilter->lumV, dstFilter->lumV, c->param);

  2514.         initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2515.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12),

  2516.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2517.                    srcFilter->chrV, dstFilter->chrV, c->param);

  2518. 

  2519. #ifdef HAVE_ALTIVEC

  2520.         c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);

  2521.         c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);

  2522. 

  2523.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2524.             int j;

  2525.             short *p = (short *)&c->vYCoeffsBank[i];

  2526.             for (j=0;j<8;j++)

  2527.                 p[j] = c->vLumFilter[i];

  2528.         }

  2529. 

  2530.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2531.             int j;

  2532.             short *p = (short *)&c->vCCoeffsBank[i];

  2533.             for (j=0;j<8;j++)

  2534.                 p[j] = c->vChrFilter[i];

  2535.         }

  2536. #endif

  2537.     }

  2538. 

  2539.     // Calculate Buffer Sizes so that they won't run out while handling these damn slices

  2540.     c->vLumBufSize= c->vLumFilterSize;

  2541.     c->vChrBufSize= c->vChrFilterSize;

  2542.     for (i=0; i<dstH; i++)

  2543.     {

  2544.         int chrI= i*c->chrDstH / dstH;

  2545.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2546.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2547. 

  2548.         nextSlice>>= c->chrSrcVSubSample;

  2549.         nextSlice<<= c->chrSrcVSubSample;

  2550.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2551.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];

  2552.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2553.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2554.     }

  2555. 

  2556.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2557.     c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2558.     c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));

  2559.     //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)

  2560.     /* align at 16 bytes for AltiVec */

  2561.     for (i=0; i<c->vLumBufSize; i++)

  2562.         c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2563.     for (i=0; i<c->vChrBufSize; i++)

  2564.         c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);

  2565. 

  2566.     //try to avoid drawing green stuff between the right end and the stride end

  2567.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);

  2568. 

  2569.     assert(2*VOFW == VOF);

  2570. 

  2571.     assert(c->chrDstH <= dstH);

  2572. 

  2573.     if (flags&SWS_PRINT_INFO)

  2574.     {

  2575. #ifdef DITHER1XBPP

  2576.         const char *dither= " dithered";

  2577. #else

  2578.         const char *dither= "";

  2579. #endif

  2580.         if (flags&SWS_FAST_BILINEAR)

  2581.             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");

  2582.         else if (flags&SWS_BILINEAR)

  2583.             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");

  2584.         else if (flags&SWS_BICUBIC)

  2585.             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");

  2586.         else if (flags&SWS_X)

  2587.             av_log(c, AV_LOG_INFO, "Experimental scaler, ");

  2588.         else if (flags&SWS_POINT)

  2589.             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");

  2590.         else if (flags&SWS_AREA)

  2591.             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");

  2592.         else if (flags&SWS_BICUBLIN)

  2593.             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");

  2594.         else if (flags&SWS_GAUSS)

  2595.             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");

  2596.         else if (flags&SWS_SINC)

  2597.             av_log(c, AV_LOG_INFO, "Sinc scaler, ");

  2598.         else if (flags&SWS_LANCZOS)

  2599.             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");

  2600.         else if (flags&SWS_SPLINE)

  2601.             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");

  2602.         else

  2603.             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");

  2604. 

  2605.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2606.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  2607.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2608.         else

  2609.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  2610.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  2611. 

  2612.         if (flags & SWS_CPU_CAPS_MMX2)

  2613.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  2614.         else if (flags & SWS_CPU_CAPS_3DNOW)

  2615.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  2616.         else if (flags & SWS_CPU_CAPS_MMX)

  2617.             av_log(c, AV_LOG_INFO, "using MMX\n");

  2618.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  2619.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  2620.         else

  2621.             av_log(c, AV_LOG_INFO, "using C\n");

  2622.     }

  2623. 

  2624.     if (flags & SWS_PRINT_INFO)

  2625.     {

  2626.         if (flags & SWS_CPU_CAPS_MMX)

  2627.         {

  2628.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2629.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  2630.             else

  2631.             {

  2632.                 if (c->hLumFilterSize==4)

  2633.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");

  2634.                 else if (c->hLumFilterSize==8)

  2635.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");

  2636.                 else

  2637.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");

  2638. 

  2639.                 if (c->hChrFilterSize==4)

  2640.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");

  2641.                 else if (c->hChrFilterSize==8)

  2642.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");

  2643.                 else

  2644.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");

  2645.             }

  2646.         }

  2647.         else

  2648.         {

  2649. #if defined(ARCH_X86)

  2650.             av_log(c, AV_LOG_VERBOSE, "using X86-Asm scaler for horizontal scaling\n");

  2651. #else

  2652.             if (flags & SWS_FAST_BILINEAR)

  2653.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");

  2654.             else

  2655.                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");

  2656. #endif

  2657.         }

  2658.         if (isPlanarYUV(dstFormat))

  2659.         {

  2660.             if (c->vLumFilterSize==1)

  2661.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2662.             else

  2663.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2664.         }

  2665.         else

  2666.         {

  2667.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  2668.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  2669.                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2670.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  2671.                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2672.             else

  2673.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2674.         }

  2675. 

  2676.         if (dstFormat==PIX_FMT_BGR24)

  2677.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 Converter\n",

  2678.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  2679.         else if (dstFormat==PIX_FMT_RGB32)

  2680.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2681.         else if (dstFormat==PIX_FMT_BGR565)

  2682.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2683.         else if (dstFormat==PIX_FMT_BGR555)

  2684.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2685. 

  2686.         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  2687.     }

  2688.     if (flags & SWS_PRINT_INFO)

  2689.     {

  2690.         av_log(c, AV_LOG_DEBUG, "Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2691.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  2692.         av_log(c, AV_LOG_DEBUG, "Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2693.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  2694.     }

  2695. 

  2696.     c->swScale= getSwsFunc(flags);

  2697.     return c;

  2698. }

  2699. 

  2700. /**

  2701.  * swscale wrapper, so we don't need to export the SwsContext.

  2702.  * assumes planar YUV to be in YUV order instead of YVU

  2703.  */

  2704. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2705.               int srcSliceH, uint8_t* dst[], int dstStride[]){

  2706.     int i;

  2707.     uint8_t* src2[4]= {src[0], src[1], src[2]};

  2708. 

  2709.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  2710.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  2711.         return 0;

  2712.     }

  2713.     if (c->sliceDir == 0) {

  2714.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  2715.     }

  2716. 

  2717.     if (usePal(c->srcFormat)){

  2718.         for (i=0; i<256; i++){

  2719.             int p, r, g, b,y,u,v;

  2720.             if(c->srcFormat == PIX_FMT_PAL8){

  2721.                 p=((uint32_t*)(src[1]))[i];

  2722.                 r= (p>>16)&0xFF;

  2723.                 g= (p>> 8)&0xFF;

  2724.                 b=  p     &0xFF;

  2725.             }else if(c->srcFormat == PIX_FMT_RGB8){

  2726.                 r= (i>>5    )*36;

  2727.                 g= ((i>>2)&7)*36;

  2728.                 b= (i&3     )*85;

  2729.             }else if(c->srcFormat == PIX_FMT_BGR8){

  2730.                 b= (i>>6    )*85;

  2731.                 g= ((i>>3)&7)*36;

  2732.                 r= (i&7     )*36;

  2733.             }else if(c->srcFormat == PIX_FMT_RGB4_BYTE){

  2734.                 r= (i>>3    )*255;

  2735.                 g= ((i>>1)&3)*85;

  2736.                 b= (i&1     )*255;

  2737.             }else {

  2738.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  2739.                 b= (i>>3    )*255;

  2740.                 g= ((i>>1)&3)*85;

  2741.                 r= (i&1     )*255;

  2742.             }

  2743.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2744.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2745.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2746.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  2747. 

  2748. 

  2749.             switch(c->dstFormat) {

  2750.             case PIX_FMT_BGR32:

  2751. #ifndef WORDS_BIGENDIAN

  2752.             case PIX_FMT_RGB24:

  2753. #endif

  2754.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  2755.                 break;

  2756.             case PIX_FMT_BGR32_1:

  2757. #ifdef  WORDS_BIGENDIAN

  2758.             case PIX_FMT_BGR24:

  2759. #endif

  2760.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  2761.                 break;

  2762.             case PIX_FMT_RGB32_1:

  2763. #ifdef  WORDS_BIGENDIAN

  2764.             case PIX_FMT_RGB24:

  2765. #endif

  2766.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  2767.                 break;

  2768.             case PIX_FMT_RGB32:

  2769. #ifndef WORDS_BIGENDIAN

  2770.             case PIX_FMT_BGR24:

  2771. #endif

  2772.             default:

  2773.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  2774.             }

  2775.         }

  2776.     }

  2777. 

  2778.     // copy strides, so they can safely be modified

  2779.     if (c->sliceDir == 1) {

  2780.         // slices go from top to bottom

  2781.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};

  2782.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};

  2783.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);

  2784.     } else {

  2785.         // slices go from bottom to top => we flip the image internally

  2786.         uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],

  2787.                            dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],

  2788.                            dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};

  2789.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};

  2790.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};

  2791. 

  2792.         src2[0] += (srcSliceH-1)*srcStride[0];

  2793.         if (!usePal(c->srcFormat))

  2794.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  2795.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  2796. 

  2797.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  2798.     }

  2799. }

  2800. 

  2801. /**

  2802.  * swscale wrapper, so we don't need to export the SwsContext

  2803.  */

  2804. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2805.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  2806.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  2807. }

  2808. 

  2809. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  2810.                                 float lumaSharpen, float chromaSharpen,

  2811.                                 float chromaHShift, float chromaVShift,

  2812.                                 int verbose)

  2813. {

  2814.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  2815. 

  2816.     if (lumaGBlur!=0.0){

  2817.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  2818.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  2819.     }else{

  2820.         filter->lumH= sws_getIdentityVec();

  2821.         filter->lumV= sws_getIdentityVec();

  2822.     }

  2823. 

  2824.     if (chromaGBlur!=0.0){

  2825.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  2826.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  2827.     }else{

  2828.         filter->chrH= sws_getIdentityVec();

  2829.         filter->chrV= sws_getIdentityVec();

  2830.     }

  2831. 

  2832.     if (chromaSharpen!=0.0){

  2833.         SwsVector *id= sws_getIdentityVec();

  2834.         sws_scaleVec(filter->chrH, -chromaSharpen);

  2835.         sws_scaleVec(filter->chrV, -chromaSharpen);

  2836.         sws_addVec(filter->chrH, id);

  2837.         sws_addVec(filter->chrV, id);

  2838.         sws_freeVec(id);

  2839.     }

  2840. 

  2841.     if (lumaSharpen!=0.0){

  2842.         SwsVector *id= sws_getIdentityVec();

  2843.         sws_scaleVec(filter->lumH, -lumaSharpen);

  2844.         sws_scaleVec(filter->lumV, -lumaSharpen);

  2845.         sws_addVec(filter->lumH, id);

  2846.         sws_addVec(filter->lumV, id);

  2847.         sws_freeVec(id);

  2848.     }

  2849. 

  2850.     if (chromaHShift != 0.0)

  2851.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  2852. 

  2853.     if (chromaVShift != 0.0)

  2854.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  2855. 

  2856.     sws_normalizeVec(filter->chrH, 1.0);

  2857.     sws_normalizeVec(filter->chrV, 1.0);

  2858.     sws_normalizeVec(filter->lumH, 1.0);

  2859.     sws_normalizeVec(filter->lumV, 1.0);

  2860. 

  2861.     if (verbose) sws_printVec(filter->chrH);

  2862.     if (verbose) sws_printVec(filter->lumH);

  2863. 

  2864.     return filter;

  2865. }

  2866. 

  2867. /**

  2868.  * returns a normalized gaussian curve used to filter stuff

  2869.  * quality=3 is high quality, lowwer is lowwer quality

  2870.  */

  2871. SwsVector *sws_getGaussianVec(double variance, double quality){

  2872.     const int length= (int)(variance*quality + 0.5) | 1;

  2873.     int i;

  2874.     double *coeff= av_malloc(length*sizeof(double));

  2875.     double middle= (length-1)*0.5;

  2876.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2877. 

  2878.     vec->coeff= coeff;

  2879.     vec->length= length;

  2880. 

  2881.     for (i=0; i<length; i++)

  2882.     {

  2883.         double dist= i-middle;

  2884.         coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);

  2885.     }

  2886. 

  2887.     sws_normalizeVec(vec, 1.0);

  2888. 

  2889.     return vec;

  2890. }

  2891. 

  2892. SwsVector *sws_getConstVec(double c, int length){

  2893.     int i;

  2894.     double *coeff= av_malloc(length*sizeof(double));

  2895.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2896. 

  2897.     vec->coeff= coeff;

  2898.     vec->length= length;

  2899. 

  2900.     for (i=0; i<length; i++)

  2901.         coeff[i]= c;

  2902. 

  2903.     return vec;

  2904. }

  2905. 

  2906. 

  2907. SwsVector *sws_getIdentityVec(void){

  2908.     return sws_getConstVec(1.0, 1);

  2909. }

  2910. 

  2911. double sws_dcVec(SwsVector *a){

  2912.     int i;

  2913.     double sum=0;

  2914. 

  2915.     for (i=0; i<a->length; i++)

  2916.         sum+= a->coeff[i];

  2917. 

  2918.     return sum;

  2919. }

  2920. 

  2921. void sws_scaleVec(SwsVector *a, double scalar){

  2922.     int i;

  2923. 

  2924.     for (i=0; i<a->length; i++)

  2925.         a->coeff[i]*= scalar;

  2926. }

  2927. 

  2928. void sws_normalizeVec(SwsVector *a, double height){

  2929.     sws_scaleVec(a, height/sws_dcVec(a));

  2930. }

  2931. 

  2932. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){

  2933.     int length= a->length + b->length - 1;

  2934.     double *coeff= av_malloc(length*sizeof(double));

  2935.     int i, j;

  2936.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2937. 

  2938.     vec->coeff= coeff;

  2939.     vec->length= length;

  2940. 

  2941.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2942. 

  2943.     for (i=0; i<a->length; i++)

  2944.     {

  2945.         for (j=0; j<b->length; j++)

  2946.         {

  2947.             coeff[i+j]+= a->coeff[i]*b->coeff[j];

  2948.         }

  2949.     }

  2950. 

  2951.     return vec;

  2952. }

  2953. 

  2954. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){

  2955.     int length= FFMAX(a->length, b->length);

  2956.     double *coeff= av_malloc(length*sizeof(double));

  2957.     int i;

  2958.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2959. 

  2960.     vec->coeff= coeff;

  2961.     vec->length= length;

  2962. 

  2963.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2964. 

  2965.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2966.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  2967. 

  2968.     return vec;

  2969. }

  2970. 

  2971. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){

  2972.     int length= FFMAX(a->length, b->length);

  2973.     double *coeff= av_malloc(length*sizeof(double));

  2974.     int i;

  2975.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2976. 

  2977.     vec->coeff= coeff;

  2978.     vec->length= length;

  2979. 

  2980.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2981. 

  2982.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2983.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  2984. 

  2985.     return vec;

  2986. }

  2987. 

  2988. /* shift left / or right if "shift" is negative */

  2989. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){

  2990.     int length= a->length + FFABS(shift)*2;

  2991.     double *coeff= av_malloc(length*sizeof(double));

  2992.     int i;

  2993.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2994. 

  2995.     vec->coeff= coeff;

  2996.     vec->length= length;

  2997. 

  2998.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2999. 

  3000.     for (i=0; i<a->length; i++)

  3001.     {

  3002.         coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  3003.     }

  3004. 

  3005.     return vec;

  3006. }

  3007. 

  3008. void sws_shiftVec(SwsVector *a, int shift){

  3009.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  3010.     av_free(a->coeff);

  3011.     a->coeff= shifted->coeff;

  3012.     a->length= shifted->length;

  3013.     av_free(shifted);

  3014. }

  3015. 

  3016. void sws_addVec(SwsVector *a, SwsVector *b){

  3017.     SwsVector *sum= sws_sumVec(a, b);

  3018.     av_free(a->coeff);

  3019.     a->coeff= sum->coeff;

  3020.     a->length= sum->length;

  3021.     av_free(sum);

  3022. }

  3023. 

  3024. void sws_subVec(SwsVector *a, SwsVector *b){

  3025.     SwsVector *diff= sws_diffVec(a, b);

  3026.     av_free(a->coeff);

  3027.     a->coeff= diff->coeff;

  3028.     a->length= diff->length;

  3029.     av_free(diff);

  3030. }

  3031. 

  3032. void sws_convVec(SwsVector *a, SwsVector *b){

  3033.     SwsVector *conv= sws_getConvVec(a, b);

  3034.     av_free(a->coeff);

  3035.     a->coeff= conv->coeff;

  3036.     a->length= conv->length;

  3037.     av_free(conv);

  3038. }

  3039. 

  3040. SwsVector *sws_cloneVec(SwsVector *a){

  3041.     double *coeff= av_malloc(a->length*sizeof(double));

  3042.     int i;

  3043.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3044. 

  3045.     vec->coeff= coeff;

  3046.     vec->length= a->length;

  3047. 

  3048.     for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];

  3049. 

  3050.     return vec;

  3051. }

  3052. 

  3053. void sws_printVec(SwsVector *a){

  3054.     int i;

  3055.     double max=0;

  3056.     double min=0;

  3057.     double range;

  3058. 

  3059.     for (i=0; i<a->length; i++)

  3060.         if (a->coeff[i]>max) max= a->coeff[i];

  3061. 

  3062.     for (i=0; i<a->length; i++)

  3063.         if (a->coeff[i]<min) min= a->coeff[i];

  3064. 

  3065.     range= max - min;

  3066. 

  3067.     for (i=0; i<a->length; i++)

  3068.     {

  3069.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  3070.         av_log(NULL, AV_LOG_DEBUG, "%1.3f ", a->coeff[i]);

  3071.         for (;x>0; x--) av_log(NULL, AV_LOG_DEBUG, " ");

  3072.         av_log(NULL, AV_LOG_DEBUG, "|\n");

  3073.     }

  3074. }

  3075. 

  3076. void sws_freeVec(SwsVector *a){

  3077.     if (!a) return;

  3078.     av_freep(&a->coeff);

  3079.     a->length=0;

  3080.     av_free(a);

  3081. }

  3082. 

  3083. void sws_freeFilter(SwsFilter *filter){

  3084.     if (!filter) return;

  3085. 

  3086.     if (filter->lumH) sws_freeVec(filter->lumH);

  3087.     if (filter->lumV) sws_freeVec(filter->lumV);

  3088.     if (filter->chrH) sws_freeVec(filter->chrH);

  3089.     if (filter->chrV) sws_freeVec(filter->chrV);

  3090.     av_free(filter);

  3091. }

  3092. 

  3093. 

  3094. void sws_freeContext(SwsContext *c){

  3095.     int i;

  3096.     if (!c) return;

  3097. 

  3098.     if (c->lumPixBuf)

  3099.     {

  3100.         for (i=0; i<c->vLumBufSize; i++)

  3101.             av_freep(&c->lumPixBuf[i]);

  3102.         av_freep(&c->lumPixBuf);

  3103.     }

  3104. 

  3105.     if (c->chrPixBuf)

  3106.     {

  3107.         for (i=0; i<c->vChrBufSize; i++)

  3108.             av_freep(&c->chrPixBuf[i]);

  3109.         av_freep(&c->chrPixBuf);

  3110.     }

  3111. 

  3112.     av_freep(&c->vLumFilter);

  3113.     av_freep(&c->vChrFilter);

  3114.     av_freep(&c->hLumFilter);

  3115.     av_freep(&c->hChrFilter);

  3116. #ifdef HAVE_ALTIVEC

  3117.     av_freep(&c->vYCoeffsBank);

  3118.     av_freep(&c->vCCoeffsBank);

  3119. #endif

  3120. 

  3121.     av_freep(&c->vLumFilterPos);

  3122.     av_freep(&c->vChrFilterPos);

  3123.     av_freep(&c->hLumFilterPos);

  3124.     av_freep(&c->hChrFilterPos);

  3125. 

  3126. #if defined(ARCH_X86) && defined(CONFIG_GPL)

  3127. #ifdef MAP_ANONYMOUS

  3128.     if (c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);

  3129.     if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);

  3130. #else

  3131.     av_free(c->funnyYCode);

  3132.     av_free(c->funnyUVCode);

  3133. #endif

  3134.     c->funnyYCode=NULL;

  3135.     c->funnyUVCode=NULL;

  3136. #endif /* defined(ARCH_X86) */

  3137. 

  3138.     av_freep(&c->lumMmx2Filter);

  3139.     av_freep(&c->chrMmx2Filter);

  3140.     av_freep(&c->lumMmx2FilterPos);

  3141.     av_freep(&c->chrMmx2FilterPos);

  3142.     av_freep(&c->yuvTable);

  3143. 

  3144.     av_free(c);

  3145. }

  3146. 

  3147. /**

  3148.  * Checks if context is valid or reallocs a new one instead.

  3149.  * If context is NULL, just calls sws_getContext() to get a new one.

  3150.  * Otherwise, checks if the parameters are the same already saved in context.

  3151.  * If that is the case, returns the current context.

  3152.  * Otherwise, frees context and gets a new one.

  3153.  *

  3154.  * Be warned that srcFilter, dstFilter are not checked, they are

  3155.  * asumed to remain valid.

  3156.  */

  3157. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  3158.                                         int srcW, int srcH, enum PixelFormat srcFormat,

  3159.                                         int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  3160.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)

  3161. {

  3162.     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};

  3163. 

  3164.     if (!param)

  3165.         param = default_param;

  3166. 

  3167.     if (context) {

  3168.         if (context->srcW != srcW || context->srcH != srcH ||

  3169.             context->srcFormat != srcFormat ||

  3170.             context->dstW != dstW || context->dstH != dstH ||

  3171.             context->dstFormat != dstFormat || context->flags != flags ||

  3172.             context->param[0] != param[0] || context->param[1] != param[1])

  3173.         {

  3174.             sws_freeContext(context);

  3175.             context = NULL;

  3176.         }

  3177.     }

  3178.     if (!context) {

  3179.         return sws_getContext(srcW, srcH, srcFormat,

  3180.                               dstW, dstH, dstFormat, flags,

  3181.                               srcFilter, dstFilter, param);

  3182.     }

  3183.     return context;

  3184. }