falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
19904 Commits
32 Branches
283MB
Tree: ecc1330a6d
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from 'ecc1330a6d'
${ noResults }
FFmpeg/libswscale/swscale.c

3611 lines
123KB
Raw Blame History 

  1. /*

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

  3.  *

  4.  * This file is part of FFmpeg.

  5.  *

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

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

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

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

  10.  *

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

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

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

  14.  * GNU General Public License for more details.

  15.  *

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

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

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

  19.  *

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

  21.  * under the LGPL license too

  22.  */

  23. 

  24. /*

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

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

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

  28. 

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

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

  31.   x -> x

  32.   YUV9 -> YV12

  33.   YUV9/YV12 -> Y800

  34.   Y800 -> YUV9/YV12

  35.   BGR24 -> BGR32 & RGB24 -> RGB32

  36.   BGR32 -> BGR24 & RGB32 -> RGB24

  37.   BGR15 -> BGR16

  38. */

  39. 

  40. /*

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

  42.  YV12 -> BGR16

  43.  YV12 -> YV12

  44.  BGR15 -> BGR16

  45.  BGR16 -> BGR16

  46.  YVU9 -> YV12

  47. 

  48. untested special converters

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

  50.   YV12/I420 -> YV12/I420

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

  52.   BGR24 -> BGR32 & RGB24 -> RGB32

  53.   BGR32 -> BGR24 & RGB32 -> RGB24

  54.   BGR24 -> YV12

  55. */

  56. 

  57. #define _SVID_SOURCE //needed for MAP_ANONYMOUS

  58. #include <inttypes.h>

  59. #include <string.h>

  60. #include <math.h>

  61. #include <stdio.h>

  62. #include <unistd.h>

  63. #include "config.h"

  64. #include <assert.h>

  65. #if HAVE_SYS_MMAN_H

  66. #include <sys/mman.h>

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

  68. #define MAP_ANONYMOUS MAP_ANON

  69. #endif

  70. #endif

  71. #if HAVE_VIRTUALALLOC

  72. #define WIN32_LEAN_AND_MEAN

  73. #include <windows.h>

  74. #endif

  75. #include "swscale.h"

  76. #include "swscale_internal.h"

  77. #include "rgb2rgb.h"

  78. #include "libavutil/x86_cpu.h"

  79. #include "libavutil/bswap.h"

  80. 

  81. unsigned swscale_version(void)

  82. {

  83.     return LIBSWSCALE_VERSION_INT;

  84. }

  85. 

  86. #undef MOVNTQ

  87. #undef PAVGB

  88. 

  89. //#undef HAVE_MMX2

  90. //#define HAVE_AMD3DNOW

  91. //#undef HAVE_MMX

  92. //#undef ARCH_X86

  93. //#define WORDS_BIGENDIAN

  94. #define DITHER1XBPP

  95. 

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

  97. 

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

  99. 

  100. #ifdef M_PI

  101. #define PI M_PI

  102. #else

  103. #define PI 3.14159265358979323846

  104. #endif

  105. 

  106. #define isSupportedIn(x)    (       \

  107.            (x)==PIX_FMT_YUV420P     \

  108.         || (x)==PIX_FMT_YUVA420P    \

  109.         || (x)==PIX_FMT_YUYV422     \

  110.         || (x)==PIX_FMT_UYVY422     \

  111.         || (x)==PIX_FMT_RGB48BE     \

  112.         || (x)==PIX_FMT_RGB48LE     \

  113.         || (x)==PIX_FMT_RGB32       \

  114.         || (x)==PIX_FMT_RGB32_1     \

  115.         || (x)==PIX_FMT_BGR24       \

  116.         || (x)==PIX_FMT_BGR565      \

  117.         || (x)==PIX_FMT_BGR555      \

  118.         || (x)==PIX_FMT_BGR32       \

  119.         || (x)==PIX_FMT_BGR32_1     \

  120.         || (x)==PIX_FMT_RGB24       \

  121.         || (x)==PIX_FMT_RGB565      \

  122.         || (x)==PIX_FMT_RGB555      \

  123.         || (x)==PIX_FMT_GRAY8       \

  124.         || (x)==PIX_FMT_YUV410P     \

  125.         || (x)==PIX_FMT_YUV440P     \

  126.         || (x)==PIX_FMT_GRAY16BE    \

  127.         || (x)==PIX_FMT_GRAY16LE    \

  128.         || (x)==PIX_FMT_YUV444P     \

  129.         || (x)==PIX_FMT_YUV422P     \

  130.         || (x)==PIX_FMT_YUV411P     \

  131.         || (x)==PIX_FMT_PAL8        \

  132.         || (x)==PIX_FMT_BGR8        \

  133.         || (x)==PIX_FMT_RGB8        \

  134.         || (x)==PIX_FMT_BGR4_BYTE   \

  135.         || (x)==PIX_FMT_RGB4_BYTE   \

  136.         || (x)==PIX_FMT_YUV440P     \

  137.         || (x)==PIX_FMT_MONOWHITE   \

  138.         || (x)==PIX_FMT_MONOBLACK   \

  139.         || (x)==PIX_FMT_YUV420PLE   \

  140.         || (x)==PIX_FMT_YUV422PLE   \

  141.         || (x)==PIX_FMT_YUV444PLE   \

  142.         || (x)==PIX_FMT_YUV420PBE   \

  143.         || (x)==PIX_FMT_YUV422PBE   \

  144.         || (x)==PIX_FMT_YUV444PBE   \

  145.     )

  146. #define isSupportedOut(x)   (       \

  147.            (x)==PIX_FMT_YUV420P     \

  148.         || (x)==PIX_FMT_YUVA420P    \

  149.         || (x)==PIX_FMT_YUYV422     \

  150.         || (x)==PIX_FMT_UYVY422     \

  151.         || (x)==PIX_FMT_YUV444P     \

  152.         || (x)==PIX_FMT_YUV422P     \

  153.         || (x)==PIX_FMT_YUV411P     \

  154.         || isRGB(x)                 \

  155.         || isBGR(x)                 \

  156.         || (x)==PIX_FMT_NV12        \

  157.         || (x)==PIX_FMT_NV21        \

  158.         || (x)==PIX_FMT_GRAY16BE    \

  159.         || (x)==PIX_FMT_GRAY16LE    \

  160.         || (x)==PIX_FMT_GRAY8       \

  161.         || (x)==PIX_FMT_YUV410P     \

  162.         || (x)==PIX_FMT_YUV440P     \

  163.         || (x)==PIX_FMT_YUV420PLE   \

  164.         || (x)==PIX_FMT_YUV422PLE   \

  165.         || (x)==PIX_FMT_YUV444PLE   \

  166.         || (x)==PIX_FMT_YUV420PBE   \

  167.         || (x)==PIX_FMT_YUV422PBE   \

  168.         || (x)==PIX_FMT_YUV444PBE   \

  169.     )

  170. #define isPacked(x)         (       \

  171.            (x)==PIX_FMT_PAL8        \

  172.         || (x)==PIX_FMT_YUYV422     \

  173.         || (x)==PIX_FMT_UYVY422     \

  174.         || isRGB(x)                 \

  175.         || isBGR(x)                 \

  176.     )

  177. #define usePal(x)           (       \

  178.            (x)==PIX_FMT_PAL8        \

  179.         || (x)==PIX_FMT_BGR4_BYTE   \

  180.         || (x)==PIX_FMT_RGB4_BYTE   \

  181.         || (x)==PIX_FMT_BGR8        \

  182.         || (x)==PIX_FMT_RGB8        \

  183.     )

  184. 

  185. #define RGB2YUV_SHIFT 15

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

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

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

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

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

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

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

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

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

  195. 

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

  197. 

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

  199.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  200.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  201.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

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

  203.     {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC

  204.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  205.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //SMPTE 170M

  206.     {0.701 , 0.087 , 0.212 , -0.384, 0.5  -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M

  207. };

  208. 

  209. /*

  210. NOTES

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

  212. 

  213. TODO

  214. more intelligent misalignment avoidance for the horizontal scaler

  215. write special vertical cubic upscale version

  216. optimize C code (YV12 / minmax)

  217. add support for packed pixel YUV input & output

  218. add support for Y8 output

  219. optimize BGR24 & BGR32

  220. add BGR4 output support

  221. write special BGR->BGR scaler

  222. */

  223. 

  224. #if ARCH_X86 && CONFIG_GPL

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

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

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

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

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

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

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

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

  233. 

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

  235.         0x0103010301030103LL,

  236.         0x0200020002000200LL,};

  237. 

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

  239.         0x0602060206020602LL,

  240.         0x0004000400040004LL,};

  241. 

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

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

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

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

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

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

  248. 

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

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

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

  252. 

  253. #ifdef FAST_BGR2YV12

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

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

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

  257. #else

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

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

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

  261. #endif /* FAST_BGR2YV12 */

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

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

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

  265. 

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

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

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

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

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

  271. 

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

  273.     {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},

  274.     {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},

  275. };

  276. 

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

  278. 

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

  280. 

  281. // clipping helper table for C implementations:

  282. static unsigned char clip_table[768];

  283. 

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

  285. 

  286. DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_4[2][8])={

  287. {  1,   3,   1,   3,   1,   3,   1,   3, },

  288. {  2,   0,   2,   0,   2,   0,   2,   0, },

  289. };

  290. 

  291. DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_8[2][8])={

  292. {  6,   2,   6,   2,   6,   2,   6,   2, },

  293. {  0,   4,   0,   4,   0,   4,   0,   4, },

  294. };

  295. 

  296. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_32[8][8])={

  297. { 17,   9,  23,  15,  16,   8,  22,  14, },

  298. {  5,  29,   3,  27,   4,  28,   2,  26, },

  299. { 21,  13,  19,  11,  20,  12,  18,  10, },

  300. {  0,  24,   6,  30,   1,  25,   7,  31, },

  301. { 16,   8,  22,  14,  17,   9,  23,  15, },

  302. {  4,  28,   2,  26,   5,  29,   3,  27, },

  303. { 20,  12,  18,  10,  21,  13,  19,  11, },

  304. {  1,  25,   7,  31,   0,  24,   6,  30, },

  305. };

  306. 

  307. #if 0

  308. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_64[8][8])={

  309. {  0,  48,  12,  60,   3,  51,  15,  63, },

  310. { 32,  16,  44,  28,  35,  19,  47,  31, },

  311. {  8,  56,   4,  52,  11,  59,   7,  55, },

  312. { 40,  24,  36,  20,  43,  27,  39,  23, },

  313. {  2,  50,  14,  62,   1,  49,  13,  61, },

  314. { 34,  18,  46,  30,  33,  17,  45,  29, },

  315. { 10,  58,   6,  54,   9,  57,   5,  53, },

  316. { 42,  26,  38,  22,  41,  25,  37,  21, },

  317. };

  318. #endif

  319. 

  320. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_73[8][8])={

  321. {  0,  55,  14,  68,   3,  58,  17,  72, },

  322. { 37,  18,  50,  32,  40,  22,  54,  35, },

  323. {  9,  64,   5,  59,  13,  67,   8,  63, },

  324. { 46,  27,  41,  23,  49,  31,  44,  26, },

  325. {  2,  57,  16,  71,   1,  56,  15,  70, },

  326. { 39,  21,  52,  34,  38,  19,  51,  33, },

  327. { 11,  66,   7,  62,  10,  65,   6,  60, },

  328. { 48,  30,  43,  25,  47,  29,  42,  24, },

  329. };

  330. 

  331. #if 0

  332. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_128[8][8])={

  333. { 68,  36,  92,  60,  66,  34,  90,  58, },

  334. { 20, 116,  12, 108,  18, 114,  10, 106, },

  335. { 84,  52,  76,  44,  82,  50,  74,  42, },

  336. {  0,  96,  24, 120,   6, 102,  30, 126, },

  337. { 64,  32,  88,  56,  70,  38,  94,  62, },

  338. { 16, 112,   8, 104,  22, 118,  14, 110, },

  339. { 80,  48,  72,  40,  86,  54,  78,  46, },

  340. {  4, 100,  28, 124,   2,  98,  26, 122, },

  341. };

  342. #endif

  343. 

  344. #if 1

  345. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220[8][8])={

  346. {117,  62, 158, 103, 113,  58, 155, 100, },

  347. { 34, 199,  21, 186,  31, 196,  17, 182, },

  348. {144,  89, 131,  76, 141,  86, 127,  72, },

  349. {  0, 165,  41, 206,  10, 175,  52, 217, },

  350. {110,  55, 151,  96, 120,  65, 162, 107, },

  351. { 28, 193,  14, 179,  38, 203,  24, 189, },

  352. {138,  83, 124,  69, 148,  93, 134,  79, },

  353. {  7, 172,  48, 213,   3, 168,  45, 210, },

  354. };

  355. #elif 1

  356. // tries to correct a gamma of 1.5

  357. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220[8][8])={

  358. {  0, 143,  18, 200,   2, 156,  25, 215, },

  359. { 78,  28, 125,  64,  89,  36, 138,  74, },

  360. { 10, 180,   3, 161,  16, 195,   8, 175, },

  361. {109,  51,  93,  38, 121,  60, 105,  47, },

  362. {  1, 152,  23, 210,   0, 147,  20, 205, },

  363. { 85,  33, 134,  71,  81,  30, 130,  67, },

  364. { 14, 190,   6, 171,  12, 185,   5, 166, },

  365. {117,  57, 101,  44, 113,  54,  97,  41, },

  366. };

  367. #elif 1

  368. // tries to correct a gamma of 2.0

  369. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220[8][8])={

  370. {  0, 124,   8, 193,   0, 140,  12, 213, },

  371. { 55,  14, 104,  42,  66,  19, 119,  52, },

  372. {  3, 168,   1, 145,   6, 187,   3, 162, },

  373. { 86,  31,  70,  21,  99,  39,  82,  28, },

  374. {  0, 134,  11, 206,   0, 129,   9, 200, },

  375. { 62,  17, 114,  48,  58,  16, 109,  45, },

  376. {  5, 181,   2, 157,   4, 175,   1, 151, },

  377. { 95,  36,  78,  26,  90,  34,  74,  24, },

  378. };

  379. #else

  380. // tries to correct a gamma of 2.5

  381. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220[8][8])={

  382. {  0, 107,   3, 187,   0, 125,   6, 212, },

  383. { 39,   7,  86,  28,  49,  11, 102,  36, },

  384. {  1, 158,   0, 131,   3, 180,   1, 151, },

  385. { 68,  19,  52,  12,  81,  25,  64,  17, },

  386. {  0, 119,   5, 203,   0, 113,   4, 195, },

  387. { 45,   9,  96,  33,  42,   8,  91,  30, },

  388. {  2, 172,   1, 144,   2, 165,   0, 137, },

  389. { 77,  23,  60,  15,  72,  21,  56,  14, },

  390. };

  391. #endif

  392. 

  393. const char *sws_format_name(enum PixelFormat format)

  394. {

  395.     switch (format) {

  396.         case PIX_FMT_YUV420P:

  397.             return "yuv420p";

  398.         case PIX_FMT_YUVA420P:

  399.             return "yuva420p";

  400.         case PIX_FMT_YUYV422:

  401.             return "yuyv422";

  402.         case PIX_FMT_RGB24:

  403.             return "rgb24";

  404.         case PIX_FMT_BGR24:

  405.             return "bgr24";

  406.         case PIX_FMT_YUV422P:

  407.             return "yuv422p";

  408.         case PIX_FMT_YUV444P:

  409.             return "yuv444p";

  410.         case PIX_FMT_RGB32:

  411.             return "rgb32";

  412.         case PIX_FMT_YUV410P:

  413.             return "yuv410p";

  414.         case PIX_FMT_YUV411P:

  415.             return "yuv411p";

  416.         case PIX_FMT_RGB565:

  417.             return "rgb565";

  418.         case PIX_FMT_RGB555:

  419.             return "rgb555";

  420.         case PIX_FMT_GRAY16BE:

  421.             return "gray16be";

  422.         case PIX_FMT_GRAY16LE:

  423.             return "gray16le";

  424.         case PIX_FMT_GRAY8:

  425.             return "gray8";

  426.         case PIX_FMT_MONOWHITE:

  427.             return "mono white";

  428.         case PIX_FMT_MONOBLACK:

  429.             return "mono black";

  430.         case PIX_FMT_PAL8:

  431.             return "Palette";

  432.         case PIX_FMT_YUVJ420P:

  433.             return "yuvj420p";

  434.         case PIX_FMT_YUVJ422P:

  435.             return "yuvj422p";

  436.         case PIX_FMT_YUVJ444P:

  437.             return "yuvj444p";

  438.         case PIX_FMT_XVMC_MPEG2_MC:

  439.             return "xvmc_mpeg2_mc";

  440.         case PIX_FMT_XVMC_MPEG2_IDCT:

  441.             return "xvmc_mpeg2_idct";

  442.         case PIX_FMT_UYVY422:

  443.             return "uyvy422";

  444.         case PIX_FMT_UYYVYY411:

  445.             return "uyyvyy411";

  446.         case PIX_FMT_RGB32_1:

  447.             return "rgb32x";

  448.         case PIX_FMT_BGR32_1:

  449.             return "bgr32x";

  450.         case PIX_FMT_BGR32:

  451.             return "bgr32";

  452.         case PIX_FMT_BGR565:

  453.             return "bgr565";

  454.         case PIX_FMT_BGR555:

  455.             return "bgr555";

  456.         case PIX_FMT_BGR8:

  457.             return "bgr8";

  458.         case PIX_FMT_BGR4:

  459.             return "bgr4";

  460.         case PIX_FMT_BGR4_BYTE:

  461.             return "bgr4 byte";

  462.         case PIX_FMT_RGB8:

  463.             return "rgb8";

  464.         case PIX_FMT_RGB4:

  465.             return "rgb4";

  466.         case PIX_FMT_RGB4_BYTE:

  467.             return "rgb4 byte";

  468.         case PIX_FMT_RGB48BE:

  469.             return "rgb48be";

  470.         case PIX_FMT_RGB48LE:

  471.             return "rgb48le";

  472.         case PIX_FMT_NV12:

  473.             return "nv12";

  474.         case PIX_FMT_NV21:

  475.             return "nv21";

  476.         case PIX_FMT_YUV440P:

  477.             return "yuv440p";

  478.         case PIX_FMT_VDPAU_H264:

  479.             return "vdpau_h264";

  480.         case PIX_FMT_VDPAU_MPEG1:

  481.             return "vdpau_mpeg1";

  482.         case PIX_FMT_VDPAU_MPEG2:

  483.             return "vdpau_mpeg2";

  484.         case PIX_FMT_VDPAU_WMV3:

  485.             return "vdpau_wmv3";

  486.         case PIX_FMT_VDPAU_VC1:

  487.             return "vdpau_vc1";

  488.         case PIX_FMT_YUV420PLE:

  489.             return "yuv420ple";

  490.         case PIX_FMT_YUV422PLE:

  491.             return "yuv422ple";

  492.         case PIX_FMT_YUV444PLE:

  493.             return "yuv444ple";

  494.         case PIX_FMT_YUV420PBE:

  495.             return "yuv420pbe";

  496.         case PIX_FMT_YUV422PBE:

  497.             return "yuv422pbe";

  498.         case PIX_FMT_YUV444PBE:

  499.             return "yuv444pbe";

  500.         default:

  501.             return "Unknown format";

  502.     }

  503. }

  504. 

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

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

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

  508. {

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

  510.     int i;

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

  512.     {

  513.         int val=1<<18;

  514.         int j;

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

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

  517. 

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

  519.     }

  520. 

  521.     if (uDest)

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

  523.         {

  524.             int u=1<<18;

  525.             int v=1<<18;

  526.             int j;

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

  528.             {

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

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

  531.             }

  532. 

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

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

  535.         }

  536. 

  537.     if (CONFIG_SWSCALE_ALPHA && aDest)

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

  539.             int val=1<<18;

  540.             int j;

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

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

  543. 

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

  545.         }

  546. 

  547. }

  548. 

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

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

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

  552. {

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

  554.     int i;

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

  556.     {

  557.         int val=1<<18;

  558.         int j;

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

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

  561. 

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

  563.     }

  564. 

  565.     if (!uDest)

  566.         return;

  567. 

  568.     if (dstFormat == PIX_FMT_NV12)

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

  570.         {

  571.             int u=1<<18;

  572.             int v=1<<18;

  573.             int j;

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

  575.             {

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

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

  578.             }

  579. 

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

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

  582.         }

  583.     else

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

  585.         {

  586.             int u=1<<18;

  587.             int v=1<<18;

  588.             int j;

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

  590.             {

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

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

  593.             }

  594. 

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

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

  597.         }

  598. }

  599. 

  600. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \

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

  602.         int j;\

  603.         int Y1 = 1<<18;\

  604.         int Y2 = 1<<18;\

  605.         int U  = 1<<18;\

  606.         int V  = 1<<18;\

  607.         int av_unused A1, A2;\

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

  609.         const int i2= 2*i;\

  610.         \

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

  612.         {\

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

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

  615.         }\

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

  617.         {\

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

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

  620.         }\

  621.         Y1>>=19;\

  622.         Y2>>=19;\

  623.         U >>=19;\

  624.         V >>=19;\

  625.         if (alpha){\

  626.             A1 = 1<<18;\

  627.             A2 = 1<<18;\

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

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

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

  631.             }\

  632.             A1>>=19;\

  633.             A2>>=19;\

  634.         }\

  635. 

  636. #define YSCALE_YUV_2_PACKEDX_C(type,alpha) \

  637.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\

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

  639.         {\

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

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

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

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

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

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

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

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

  648.         }\

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

  650.             A1=av_clip_uint8(A1);\

  651.             A2=av_clip_uint8(A2);\

  652.         }

  653. 

  654. #define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \

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

  656.         int j;\

  657.         int Y = 0;\

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

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

  660.         int av_unused A;\

  661.         int R,G,B;\

  662.         \

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

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

  665.         }\

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

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

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

  669.         }\

  670.         Y >>=10;\

  671.         U >>=10;\

  672.         V >>=10;\

  673.         if (alpha){\

  674.             A = rnd;\

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

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

  677.             A >>=19;\

  678.             if (A&256)\

  679.                 A = av_clip_uint8(A);\

  680.         }\

  681. 

  682. #define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \

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

  684.         Y-= c->yuv2rgb_y_offset;\

  685.         Y*= c->yuv2rgb_y_coeff;\

  686.         Y+= rnd;\

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

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

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

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

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

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

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

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

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

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

  697.         }\

  698. 

  699. 

  700. #define YSCALE_YUV_2_GRAY16_C \

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

  702.         int j;\

  703.         int Y1 = 1<<18;\

  704.         int Y2 = 1<<18;\

  705.         int U  = 1<<18;\

  706.         int V  = 1<<18;\

  707.         \

  708.         const int i2= 2*i;\

  709.         \

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

  711.         {\

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

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

  714.         }\

  715.         Y1>>=11;\

  716.         Y2>>=11;\

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

  718.         {\

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

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

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

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

  723.         }

  724. 

  725. #define YSCALE_YUV_2_RGBX_C(type,alpha) \

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

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

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

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

  730. 

  731. #define YSCALE_YUV_2_PACKED2_C(type,alpha)   \

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

  733.         const int i2= 2*i;       \

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

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

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

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

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

  739.         int av_unused A1, A2;                                         \

  740.         if (alpha){\

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

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

  743.         }\

  744. 

  745. #define YSCALE_YUV_2_GRAY16_2_C   \

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

  747.         const int i2= 2*i;       \

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

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

  750. 

  751. #define YSCALE_YUV_2_RGB2_C(type,alpha) \

  752.     YSCALE_YUV_2_PACKED2_C(type,alpha)\

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

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

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

  756. 

  757. #define YSCALE_YUV_2_PACKED1_C(type,alpha) \

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

  759.         const int i2= 2*i;\

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

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

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

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

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

  765.         int av_unused A1, A2;\

  766.         if (alpha){\

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

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

  769.         }\

  770. 

  771. #define YSCALE_YUV_2_GRAY16_1_C \

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

  773.         const int i2= 2*i;\

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

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

  776. 

  777. #define YSCALE_YUV_2_RGB1_C(type,alpha) \

  778.     YSCALE_YUV_2_PACKED1_C(type,alpha)\

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

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

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

  782. 

  783. #define YSCALE_YUV_2_PACKED1B_C(type,alpha) \

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

  785.         const int i2= 2*i;\

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

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

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

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

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

  791.         int av_unused A1, A2;\

  792.         if (alpha){\

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

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

  795.         }\

  796. 

  797. #define YSCALE_YUV_2_RGB1B_C(type,alpha) \

  798.     YSCALE_YUV_2_PACKED1B_C(type,alpha)\

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

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

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

  802. 

  803. #define YSCALE_YUV_2_MONO2_C \

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

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

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

  807.         int acc;\

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

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

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

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

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

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

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

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

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

  817.         dest++;\

  818.     }\

  819. 

  820. 

  821. #define YSCALE_YUV_2_MONOX_C \

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

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

  824.     int acc=0;\

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

  826.         int j;\

  827.         int Y1=1<<18;\

  828.         int Y2=1<<18;\

  829. \

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

  831.         {\

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

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

  834.         }\

  835.         Y1>>=19;\

  836.         Y2>>=19;\

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

  838.         {\

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

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

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

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

  843.         }\

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

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

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

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

  848.             dest++;\

  849.         }\

  850.     }

  851. 

  852. 

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

  854.     switch(c->dstFormat)\

  855.     {\

  856.     case PIX_FMT_RGB48BE:\

  857.     case PIX_FMT_RGB48LE:\

  858.         func(uint8_t,0)\

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

  860.             ((uint8_t*)dest)[ 1]= r[Y1];\

  861.             ((uint8_t*)dest)[ 2]= g[Y1];\

  862.             ((uint8_t*)dest)[ 3]= g[Y1];\

  863.             ((uint8_t*)dest)[ 4]= b[Y1];\

  864.             ((uint8_t*)dest)[ 5]= b[Y1];\

  865.             ((uint8_t*)dest)[ 6]= r[Y2];\

  866.             ((uint8_t*)dest)[ 7]= r[Y2];\

  867.             ((uint8_t*)dest)[ 8]= g[Y2];\

  868.             ((uint8_t*)dest)[ 9]= g[Y2];\

  869.             ((uint8_t*)dest)[10]= b[Y2];\

  870.             ((uint8_t*)dest)[11]= b[Y2];\

  871.             dest+=12;\

  872.         }\

  873.         break;\

  874.     case PIX_FMT_RGBA:\

  875.     case PIX_FMT_BGRA:\

  876.         if (CONFIG_SMALL){\

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

  878.             func(uint32_t,needAlpha)\

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

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

  881.             }\

  882.         }else{\

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

  884.                 func(uint32_t,1)\

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

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

  887.                 }\

  888.             }else{\

  889.                 func(uint32_t,0)\

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

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

  892.                 }\

  893.             }\

  894.         }\

  895.         break;\

  896.     case PIX_FMT_ARGB:\

  897.     case PIX_FMT_ABGR:\

  898.         if (CONFIG_SMALL){\

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

  900.             func(uint32_t,needAlpha)\

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

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

  903.             }\

  904.         }else{\

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

  906.                 func(uint32_t,1)\

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

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

  909.                 }\

  910.             }else{\

  911.                 func(uint32_t,0)\

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

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

  914.                 }\

  915.             }\

  916.         }                \

  917.         break;\

  918.     case PIX_FMT_RGB24:\

  919.         func(uint8_t,0)\

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

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

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

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

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

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

  926.             dest+=6;\

  927.         }\

  928.         break;\

  929.     case PIX_FMT_BGR24:\

  930.         func(uint8_t,0)\

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

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

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

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

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

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

  937.             dest+=6;\

  938.         }\

  939.         break;\

  940.     case PIX_FMT_RGB565:\

  941.     case PIX_FMT_BGR565:\

  942.         {\

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

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

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

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

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

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

  949.             func(uint16_t,0)\

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

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

  952.             }\

  953.         }\

  954.         break;\

  955.     case PIX_FMT_RGB555:\

  956.     case PIX_FMT_BGR555:\

  957.         {\

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

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

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

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

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

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

  964.             func(uint16_t,0)\

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

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

  967.             }\

  968.         }\

  969.         break;\

  970.     case PIX_FMT_RGB8:\

  971.     case PIX_FMT_BGR8:\

  972.         {\

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

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

  975.             func(uint8_t,0)\

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

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

  978.             }\

  979.         }\

  980.         break;\

  981.     case PIX_FMT_RGB4:\

  982.     case PIX_FMT_BGR4:\

  983.         {\

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

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

  986.             func(uint8_t,0)\

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

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

  989.             }\

  990.         }\

  991.         break;\

  992.     case PIX_FMT_RGB4_BYTE:\

  993.     case PIX_FMT_BGR4_BYTE:\

  994.         {\

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

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

  997.             func(uint8_t,0)\

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

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

  1000.             }\

  1001.         }\

  1002.         break;\

  1003.     case PIX_FMT_MONOBLACK:\

  1004.     case PIX_FMT_MONOWHITE:\

  1005.         {\

  1006.             func_monoblack\

  1007.         }\

  1008.         break;\

  1009.     case PIX_FMT_YUYV422:\

  1010.         func2\

  1011.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  1012.             ((uint8_t*)dest)[2*i2+1]= U;\

  1013.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  1014.             ((uint8_t*)dest)[2*i2+3]= V;\

  1015.         }                \

  1016.         break;\

  1017.     case PIX_FMT_UYVY422:\

  1018.         func2\

  1019.             ((uint8_t*)dest)[2*i2+0]= U;\

  1020.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  1021.             ((uint8_t*)dest)[2*i2+2]= V;\

  1022.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  1023.         }                \

  1024.         break;\

  1025.     case PIX_FMT_GRAY16BE:\

  1026.         func_g16\

  1027.             ((uint8_t*)dest)[2*i2+0]= Y1>>8;\

  1028.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  1029.             ((uint8_t*)dest)[2*i2+2]= Y2>>8;\

  1030.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  1031.         }                \

  1032.         break;\

  1033.     case PIX_FMT_GRAY16LE:\

  1034.         func_g16\

  1035.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  1036.             ((uint8_t*)dest)[2*i2+1]= Y1>>8;\

  1037.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  1038.             ((uint8_t*)dest)[2*i2+3]= Y2>>8;\

  1039.         }                \

  1040.         break;\

  1041.     }\

  1042. 

  1043. 

  1044. static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  1045.                                   const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  1046.                                   const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  1047. {

  1048.     int i;

  1049.     YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void,0), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)

  1050. }

  1051. 

  1052. static inline void yuv2rgbXinC_full(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  1053.                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  1054.                                     const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  1055. {

  1056.     int i;

  1057.     int step= fmt_depth(c->dstFormat)/8;

  1058.     int aidx= 3;

  1059. 

  1060.     switch(c->dstFormat){

  1061.     case PIX_FMT_ARGB:

  1062.         dest++;

  1063.         aidx= 0;

  1064.     case PIX_FMT_RGB24:

  1065.         aidx--;

  1066.     case PIX_FMT_RGBA:

  1067.         if (CONFIG_SMALL){

  1068.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1069.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1070.                 dest[aidx]= needAlpha ? A : 255;

  1071.                 dest[0]= R>>22;

  1072.                 dest[1]= G>>22;

  1073.                 dest[2]= B>>22;

  1074.                 dest+= step;

  1075.             }

  1076.         }else{

  1077.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf){

  1078.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1079.                     dest[aidx]= A;

  1080.                     dest[0]= R>>22;

  1081.                     dest[1]= G>>22;

  1082.                     dest[2]= B>>22;

  1083.                     dest+= step;

  1084.                 }

  1085.             }else{

  1086.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1087.                     dest[aidx]= 255;

  1088.                     dest[0]= R>>22;

  1089.                     dest[1]= G>>22;

  1090.                     dest[2]= B>>22;

  1091.                     dest+= step;

  1092.                 }

  1093.             }

  1094.         }

  1095.         break;

  1096.     case PIX_FMT_ABGR:

  1097.         dest++;

  1098.         aidx= 0;

  1099.     case PIX_FMT_BGR24:

  1100.         aidx--;

  1101.     case PIX_FMT_BGRA:

  1102.         if (CONFIG_SMALL){

  1103.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1104.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1105.                 dest[aidx]= needAlpha ? A : 255;

  1106.                 dest[0]= B>>22;

  1107.                 dest[1]= G>>22;

  1108.                 dest[2]= R>>22;

  1109.                 dest+= step;

  1110.             }

  1111.         }else{

  1112.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf){

  1113.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1114.                     dest[aidx]= A;

  1115.                     dest[0]= B>>22;

  1116.                     dest[1]= G>>22;

  1117.                     dest[2]= R>>22;

  1118.                     dest+= step;

  1119.                 }

  1120.             }else{

  1121.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1122.                     dest[aidx]= 255;

  1123.                     dest[0]= B>>22;

  1124.                     dest[1]= G>>22;

  1125.                     dest[2]= R>>22;

  1126.                     dest+= step;

  1127.                 }

  1128.             }

  1129.         }

  1130.         break;

  1131.     default:

  1132.         assert(0);

  1133.     }

  1134. }

  1135. 

  1136. static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val){

  1137.     int i;

  1138.     uint8_t *ptr = plane + stride*y;

  1139.     for (i=0; i<height; i++){

  1140.         memset(ptr, val, width);

  1141.         ptr += stride;

  1142.     }

  1143. }

  1144. 

  1145. static inline void rgb48ToY(uint8_t *dst, const uint8_t *src, int width)

  1146. {

  1147.     int i;

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

  1149.         int r = src[i*6+0];

  1150.         int g = src[i*6+2];

  1151.         int b = src[i*6+4];

  1152. 

  1153.         dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1154.     }

  1155. }

  1156. 

  1157. static inline void rgb48ToUV(uint8_t *dstU, uint8_t *dstV,

  1158.                              uint8_t *src1, uint8_t *src2, int width)

  1159. {

  1160.     int i;

  1161.     assert(src1==src2);

  1162.     for (i = 0; i < width; i++) {

  1163.         int r = src1[6*i + 0];

  1164.         int g = src1[6*i + 2];

  1165.         int b = src1[6*i + 4];

  1166. 

  1167.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1168.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1169.     }

  1170. }

  1171. 

  1172. static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1173.                                   uint8_t *src1, uint8_t *src2, int width)

  1174. {

  1175.     int i;

  1176.     assert(src1==src2);

  1177.     for (i = 0; i < width; i++) {

  1178.         int r= src1[12*i + 0] + src1[12*i + 6];

  1179.         int g= src1[12*i + 2] + src1[12*i + 8];

  1180.         int b= src1[12*i + 4] + src1[12*i + 10];

  1181. 

  1182.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1183.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1184.     }

  1185. }

  1186. 

  1187. #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\

  1188. static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\

  1189. {\

  1190.     int i;\

  1191.     for (i=0; i<width; i++)\

  1192.     {\

  1193.         int b= (((const type*)src)[i]>>shb)&maskb;\

  1194.         int g= (((const type*)src)[i]>>shg)&maskg;\

  1195.         int r= (((const type*)src)[i]>>shr)&maskr;\

  1196. \

  1197.         dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\

  1198.     }\

  1199. }

  1200. 

  1201. BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1202. BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1203. BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)

  1204. BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)

  1205. BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)

  1206. BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)

  1207. 

  1208. static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused){

  1209.     int i;

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

  1211.         dst[i]= src[4*i];

  1212.     }

  1213. }

  1214. 

  1215. #define BGR2UV(type, name, shr, shg, shb, maska, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S)\

  1216. static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1217. {\

  1218.     int i;\

  1219.     for (i=0; i<width; i++)\

  1220.     {\

  1221.         int b= (((const type*)src)[i]&maskb)>>shb;\

  1222.         int g= (((const type*)src)[i]&maskg)>>shg;\

  1223.         int r= (((const type*)src)[i]&maskr)>>shr;\

  1224. \

  1225.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\

  1226.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\

  1227.     }\

  1228. }\

  1229. static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1230. {\

  1231.     int i;\

  1232.     for (i=0; i<width; i++)\

  1233.     {\

  1234.         int pix0= ((const type*)src)[2*i+0];\

  1235.         int pix1= ((const type*)src)[2*i+1];\

  1236.         int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\

  1237.         int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\

  1238.         int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\

  1239.         g&= maskg|(2*maskg);\

  1240. \

  1241.         g>>=shg;\

  1242. \

  1243.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\

  1244.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\

  1245.     }\

  1246. }

  1247. 

  1248. BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0xFF000000, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1249. BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0xFF000000,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1250. BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0,          0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)

  1251. BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0,          0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)

  1252. BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0,          0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)

  1253. BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0,          0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)

  1254. 

  1255. static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)

  1256. {

  1257.     int i;

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

  1259.     {

  1260.         int d= src[i];

  1261. 

  1262.         dst[i]= pal[d] & 0xFF;

  1263.     }

  1264. }

  1265. 

  1266. static inline void palToUV(uint8_t *dstU, uint8_t *dstV,

  1267.                            const uint8_t *src1, const uint8_t *src2,

  1268.                            long width, uint32_t *pal)

  1269. {

  1270.     int i;

  1271.     assert(src1 == src2);

  1272.     for (i=0; i<width; i++)

  1273.     {

  1274.         int p= pal[src1[i]];

  1275. 

  1276.         dstU[i]= p>>8;

  1277.         dstV[i]= p>>16;

  1278.     }

  1279. }

  1280. 

  1281. static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1282. {

  1283.     int i, j;

  1284.     for (i=0; i<width/8; i++){

  1285.         int d= ~src[i];

  1286.         for(j=0; j<8; j++)

  1287.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1288.     }

  1289. }

  1290. 

  1291. static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1292. {

  1293.     int i, j;

  1294.     for (i=0; i<width/8; i++){

  1295.         int d= src[i];

  1296.         for(j=0; j<8; j++)

  1297.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1298.     }

  1299. }

  1300. 

  1301. 

  1302. //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one

  1303. //Plain C versions

  1304. #if !HAVE_MMX || CONFIG_RUNTIME_CPUDETECT || !CONFIG_GPL

  1305. #define COMPILE_C

  1306. #endif

  1307. 

  1308. #if ARCH_PPC

  1309. #if (HAVE_ALTIVEC || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1310. #undef COMPILE_C

  1311. #define COMPILE_ALTIVEC

  1312. #endif

  1313. #endif //ARCH_PPC

  1314. 

  1315. #if ARCH_X86

  1316. 

  1317. #if ((HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1318. #define COMPILE_MMX

  1319. #endif

  1320. 

  1321. #if (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1322. #define COMPILE_MMX2

  1323. #endif

  1324. 

  1325. #if ((HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1326. #define COMPILE_3DNOW

  1327. #endif

  1328. #endif //ARCH_X86

  1329. 

  1330. #undef HAVE_MMX

  1331. #undef HAVE_MMX2

  1332. #undef HAVE_AMD3DNOW

  1333. #undef HAVE_ALTIVEC

  1334. #define HAVE_MMX 0

  1335. #define HAVE_MMX2 0

  1336. #define HAVE_AMD3DNOW 0

  1337. #define HAVE_ALTIVEC 0

  1338. 

  1339. #ifdef COMPILE_C

  1340. #define RENAME(a) a ## _C

  1341. #include "swscale_template.c"

  1342. #endif

  1343. 

  1344. #ifdef COMPILE_ALTIVEC

  1345. #undef RENAME

  1346. #undef HAVE_ALTIVEC

  1347. #define HAVE_ALTIVEC 1

  1348. #define RENAME(a) a ## _altivec

  1349. #include "swscale_template.c"

  1350. #endif

  1351. 

  1352. #if ARCH_X86

  1353. 

  1354. //MMX versions

  1355. #ifdef COMPILE_MMX

  1356. #undef RENAME

  1357. #undef HAVE_MMX

  1358. #undef HAVE_MMX2

  1359. #undef HAVE_AMD3DNOW

  1360. #define HAVE_MMX 1

  1361. #define HAVE_MMX2 0

  1362. #define HAVE_AMD3DNOW 0

  1363. #define RENAME(a) a ## _MMX

  1364. #include "swscale_template.c"

  1365. #endif

  1366. 

  1367. //MMX2 versions

  1368. #ifdef COMPILE_MMX2

  1369. #undef RENAME

  1370. #undef HAVE_MMX

  1371. #undef HAVE_MMX2

  1372. #undef HAVE_AMD3DNOW

  1373. #define HAVE_MMX 1

  1374. #define HAVE_MMX2 1

  1375. #define HAVE_AMD3DNOW 0

  1376. #define RENAME(a) a ## _MMX2

  1377. #include "swscale_template.c"

  1378. #endif

  1379. 

  1380. //3DNOW versions

  1381. #ifdef COMPILE_3DNOW

  1382. #undef RENAME

  1383. #undef HAVE_MMX

  1384. #undef HAVE_MMX2

  1385. #undef HAVE_AMD3DNOW

  1386. #define HAVE_MMX 1

  1387. #define HAVE_MMX2 0

  1388. #define HAVE_AMD3DNOW 1

  1389. #define RENAME(a) a ## _3DNow

  1390. #include "swscale_template.c"

  1391. #endif

  1392. 

  1393. #endif //ARCH_X86

  1394. 

  1395. // minor note: the HAVE_xyz are messed up after this line so don't use them

  1396. 

  1397. static double getSplineCoeff(double a, double b, double c, double d, double dist)

  1398. {

  1399. //    printf("%f %f %f %f %f\n", a,b,c,d,dist);

  1400.     if (dist<=1.0)      return ((d*dist + c)*dist + b)*dist +a;

  1401.     else                return getSplineCoeff(        0.0,

  1402.                                              b+ 2.0*c + 3.0*d,

  1403.                                                     c + 3.0*d,

  1404.                                             -b- 3.0*c - 6.0*d,

  1405.                                             dist-1.0);

  1406. }

  1407. 

  1408. static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,

  1409.                              int srcW, int dstW, int filterAlign, int one, int flags,

  1410.                              SwsVector *srcFilter, SwsVector *dstFilter, double param[2])

  1411. {

  1412.     int i;

  1413.     int filterSize;

  1414.     int filter2Size;

  1415.     int minFilterSize;

  1416.     int64_t *filter=NULL;

  1417.     int64_t *filter2=NULL;

  1418.     const int64_t fone= 1LL<<54;

  1419.     int ret= -1;

  1420. #if ARCH_X86

  1421.     if (flags & SWS_CPU_CAPS_MMX)

  1422.         __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)

  1423. #endif

  1424. 

  1425.     // NOTE: the +1 is for the MMX scaler which reads over the end

  1426.     *filterPos = av_malloc((dstW+1)*sizeof(int16_t));

  1427. 

  1428.     if (FFABS(xInc - 0x10000) <10) // unscaled

  1429.     {

  1430.         int i;

  1431.         filterSize= 1;

  1432.         filter= av_mallocz(dstW*sizeof(*filter)*filterSize);

  1433. 

  1434.         for (i=0; i<dstW; i++)

  1435.         {

  1436.             filter[i*filterSize]= fone;

  1437.             (*filterPos)[i]=i;

  1438.         }

  1439. 

  1440.     }

  1441.     else if (flags&SWS_POINT) // lame looking point sampling mode

  1442.     {

  1443.         int i;

  1444.         int xDstInSrc;

  1445.         filterSize= 1;

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

  1447. 

  1448.         xDstInSrc= xInc/2 - 0x8000;

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

  1450.         {

  1451.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1452. 

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

  1454.             filter[i]= fone;

  1455.             xDstInSrc+= xInc;

  1456.         }

  1457.     }

  1458.     else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale

  1459.     {

  1460.         int i;

  1461.         int xDstInSrc;

  1462.         if      (flags&SWS_BICUBIC) filterSize= 4;

  1463.         else if (flags&SWS_X      ) filterSize= 4;

  1464.         else                        filterSize= 2; // SWS_BILINEAR / SWS_AREA

  1465.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1466. 

  1467.         xDstInSrc= xInc/2 - 0x8000;

  1468.         for (i=0; i<dstW; i++)

  1469.         {

  1470.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1471.             int j;

  1472. 

  1473.             (*filterPos)[i]= xx;

  1474.                 //bilinear upscale / linear interpolate / area averaging

  1475.                 for (j=0; j<filterSize; j++)

  1476.                 {

  1477.                     int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);

  1478.                     if (coeff<0) coeff=0;

  1479.                     filter[i*filterSize + j]= coeff;

  1480.                     xx++;

  1481.                 }

  1482.             xDstInSrc+= xInc;

  1483.         }

  1484.     }

  1485.     else

  1486.     {

  1487.         int xDstInSrc;

  1488.         int sizeFactor;

  1489. 

  1490.         if      (flags&SWS_BICUBIC)      sizeFactor=  4;

  1491.         else if (flags&SWS_X)            sizeFactor=  8;

  1492.         else if (flags&SWS_AREA)         sizeFactor=  1; //downscale only, for upscale it is bilinear

  1493.         else if (flags&SWS_GAUSS)        sizeFactor=  8;   // infinite ;)

  1494.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;

  1495.         else if (flags&SWS_SINC)         sizeFactor= 20; // infinite ;)

  1496.         else if (flags&SWS_SPLINE)       sizeFactor= 20;  // infinite ;)

  1497.         else if (flags&SWS_BILINEAR)     sizeFactor=  2;

  1498.         else {

  1499.             sizeFactor= 0; //GCC warning killer

  1500.             assert(0);

  1501.         }

  1502. 

  1503.         if (xInc <= 1<<16)      filterSize= 1 + sizeFactor; // upscale

  1504.         else                    filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;

  1505. 

  1506.         if (filterSize > srcW-2) filterSize=srcW-2;

  1507. 

  1508.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1509. 

  1510.         xDstInSrc= xInc - 0x10000;

  1511.         for (i=0; i<dstW; i++)

  1512.         {

  1513.             int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);

  1514.             int j;

  1515.             (*filterPos)[i]= xx;

  1516.             for (j=0; j<filterSize; j++)

  1517.             {

  1518.                 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;

  1519.                 double floatd;

  1520.                 int64_t coeff;

  1521. 

  1522.                 if (xInc > 1<<16)

  1523.                     d= d*dstW/srcW;

  1524.                 floatd= d * (1.0/(1<<30));

  1525. 

  1526.                 if (flags & SWS_BICUBIC)

  1527.                 {

  1528.                     int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] :   0) * (1<<24);

  1529.                     int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);

  1530.                     int64_t dd = ( d*d)>>30;

  1531.                     int64_t ddd= (dd*d)>>30;

  1532. 

  1533.                     if      (d < 1LL<<30)

  1534.                         coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);

  1535.                     else if (d < 1LL<<31)

  1536.                         coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);

  1537.                     else

  1538.                         coeff=0.0;

  1539.                     coeff *= fone>>(30+24);

  1540.                 }

  1541. /*                else if (flags & SWS_X)

  1542.                 {

  1543.                     double p= param ? param*0.01 : 0.3;

  1544.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1545.                     coeff*= pow(2.0, - p*d*d);

  1546.                 }*/

  1547.                 else if (flags & SWS_X)

  1548.                 {

  1549.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1550.                     double c;

  1551. 

  1552.                     if (floatd<1.0)

  1553.                         c = cos(floatd*PI);

  1554.                     else

  1555.                         c=-1.0;

  1556.                     if (c<0.0)      c= -pow(-c, A);

  1557.                     else            c=  pow( c, A);

  1558.                     coeff= (c*0.5 + 0.5)*fone;

  1559.                 }

  1560.                 else if (flags & SWS_AREA)

  1561.                 {

  1562.                     int64_t d2= d - (1<<29);

  1563.                     if      (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));

  1564.                     else if (d2*xInc <  (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));

  1565.                     else coeff=0.0;

  1566.                     coeff *= fone>>(30+16);

  1567.                 }

  1568.                 else if (flags & SWS_GAUSS)

  1569.                 {

  1570.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1571.                     coeff = (pow(2.0, - p*floatd*floatd))*fone;

  1572.                 }

  1573.                 else if (flags & SWS_SINC)

  1574.                 {

  1575.                     coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;

  1576.                 }

  1577.                 else if (flags & SWS_LANCZOS)

  1578.                 {

  1579.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1580.                     coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;

  1581.                     if (floatd>p) coeff=0;

  1582.                 }

  1583.                 else if (flags & SWS_BILINEAR)

  1584.                 {

  1585.                     coeff= (1<<30) - d;

  1586.                     if (coeff<0) coeff=0;

  1587.                     coeff *= fone >> 30;

  1588.                 }

  1589.                 else if (flags & SWS_SPLINE)

  1590.                 {

  1591.                     double p=-2.196152422706632;

  1592.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;

  1593.                 }

  1594.                 else {

  1595.                     coeff= 0.0; //GCC warning killer

  1596.                     assert(0);

  1597.                 }

  1598. 

  1599.                 filter[i*filterSize + j]= coeff;

  1600.                 xx++;

  1601.             }

  1602.             xDstInSrc+= 2*xInc;

  1603.         }

  1604.     }

  1605. 

  1606.     /* apply src & dst Filter to filter -> filter2

  1607.        av_free(filter);

  1608.     */

  1609.     assert(filterSize>0);

  1610.     filter2Size= filterSize;

  1611.     if (srcFilter) filter2Size+= srcFilter->length - 1;

  1612.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1613.     assert(filter2Size>0);

  1614.     filter2= av_mallocz(filter2Size*dstW*sizeof(*filter2));

  1615. 

  1616.     for (i=0; i<dstW; i++)

  1617.     {

  1618.         int j, k;

  1619. 

  1620.         if(srcFilter){

  1621.             for (k=0; k<srcFilter->length; k++){

  1622.                 for (j=0; j<filterSize; j++)

  1623.                     filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];

  1624.             }

  1625.         }else{

  1626.             for (j=0; j<filterSize; j++)

  1627.                 filter2[i*filter2Size + j]= filter[i*filterSize + j];

  1628.         }

  1629.         //FIXME dstFilter

  1630. 

  1631.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1632.     }

  1633.     av_freep(&filter);

  1634. 

  1635.     /* try to reduce the filter-size (step1 find size and shift left) */

  1636.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1637.     minFilterSize= 0;

  1638.     for (i=dstW-1; i>=0; i--)

  1639.     {

  1640.         int min= filter2Size;

  1641.         int j;

  1642.         int64_t cutOff=0.0;

  1643. 

  1644.         /* get rid off near zero elements on the left by shifting left */

  1645.         for (j=0; j<filter2Size; j++)

  1646.         {

  1647.             int k;

  1648.             cutOff += FFABS(filter2[i*filter2Size]);

  1649. 

  1650.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1651. 

  1652.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1653.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1654. 

  1655.             // move filter coefficients left

  1656.             for (k=1; k<filter2Size; k++)

  1657.                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1658.             filter2[i*filter2Size + k - 1]= 0;

  1659.             (*filterPos)[i]++;

  1660.         }

  1661. 

  1662.         cutOff=0;

  1663.         /* count near zeros on the right */

  1664.         for (j=filter2Size-1; j>0; j--)

  1665.         {

  1666.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1667. 

  1668.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1669.             min--;

  1670.         }

  1671. 

  1672.         if (min>minFilterSize) minFilterSize= min;

  1673.     }

  1674. 

  1675.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1676.         // we can handle the special case 4,

  1677.         // so we don't want to go to the full 8

  1678.         if (minFilterSize < 5)

  1679.             filterAlign = 4;

  1680. 

  1681.         // We really don't want to waste our time

  1682.         // doing useless computation, so fall back on

  1683.         // the scalar C code for very small filters.

  1684.         // Vectorizing is worth it only if you have a

  1685.         // decent-sized vector.

  1686.         if (minFilterSize < 3)

  1687.             filterAlign = 1;

  1688.     }

  1689. 

  1690.     if (flags & SWS_CPU_CAPS_MMX) {

  1691.         // special case for unscaled vertical filtering

  1692.         if (minFilterSize == 1 && filterAlign == 2)

  1693.             filterAlign= 1;

  1694.     }

  1695. 

  1696.     assert(minFilterSize > 0);

  1697.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1698.     assert(filterSize > 0);

  1699.     filter= av_malloc(filterSize*dstW*sizeof(*filter));

  1700.     if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)

  1701.         goto error;

  1702.     *outFilterSize= filterSize;

  1703. 

  1704.     if (flags&SWS_PRINT_INFO)

  1705.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1706.     /* try to reduce the filter-size (step2 reduce it) */

  1707.     for (i=0; i<dstW; i++)

  1708.     {

  1709.         int j;

  1710. 

  1711.         for (j=0; j<filterSize; j++)

  1712.         {

  1713.             if (j>=filter2Size) filter[i*filterSize + j]= 0;

  1714.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1715.             if((flags & SWS_BITEXACT) && j>=minFilterSize)

  1716.                 filter[i*filterSize + j]= 0;

  1717.         }

  1718.     }

  1719. 

  1720. 

  1721.     //FIXME try to align filterPos if possible

  1722. 

  1723.     //fix borders

  1724.     for (i=0; i<dstW; i++)

  1725.     {

  1726.         int j;

  1727.         if ((*filterPos)[i] < 0)

  1728.         {

  1729.             // move filter coefficients left to compensate for filterPos

  1730.             for (j=1; j<filterSize; j++)

  1731.             {

  1732.                 int left= FFMAX(j + (*filterPos)[i], 0);

  1733.                 filter[i*filterSize + left] += filter[i*filterSize + j];

  1734.                 filter[i*filterSize + j]=0;

  1735.             }

  1736.             (*filterPos)[i]= 0;

  1737.         }

  1738. 

  1739.         if ((*filterPos)[i] + filterSize > srcW)

  1740.         {

  1741.             int shift= (*filterPos)[i] + filterSize - srcW;

  1742.             // move filter coefficients right to compensate for filterPos

  1743.             for (j=filterSize-2; j>=0; j--)

  1744.             {

  1745.                 int right= FFMIN(j + shift, filterSize-1);

  1746.                 filter[i*filterSize +right] += filter[i*filterSize +j];

  1747.                 filter[i*filterSize +j]=0;

  1748.             }

  1749.             (*filterPos)[i]= srcW - filterSize;

  1750.         }

  1751.     }

  1752. 

  1753.     // Note the +1 is for the MMX scaler which reads over the end

  1754.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1755.     *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));

  1756. 

  1757.     /* normalize & store in outFilter */

  1758.     for (i=0; i<dstW; i++)

  1759.     {

  1760.         int j;

  1761.         int64_t error=0;

  1762.         int64_t sum=0;

  1763. 

  1764.         for (j=0; j<filterSize; j++)

  1765.         {

  1766.             sum+= filter[i*filterSize + j];

  1767.         }

  1768.         sum= (sum + one/2)/ one;

  1769.         for (j=0; j<*outFilterSize; j++)

  1770.         {

  1771.             int64_t v= filter[i*filterSize + j] + error;

  1772.             int intV= ROUNDED_DIV(v, sum);

  1773.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1774.             error= v - intV*sum;

  1775.         }

  1776.     }

  1777. 

  1778.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1779.     for (i=0; i<*outFilterSize; i++)

  1780.     {

  1781.         int j= dstW*(*outFilterSize);

  1782.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1783.     }

  1784. 

  1785.     ret=0;

  1786. error:

  1787.     av_free(filter);

  1788.     av_free(filter2);

  1789.     return ret;

  1790. }

  1791. 

  1792. #ifdef COMPILE_MMX2

  1793. static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1794. {

  1795.     uint8_t *fragmentA;

  1796.     x86_reg imm8OfPShufW1A;

  1797.     x86_reg imm8OfPShufW2A;

  1798.     x86_reg fragmentLengthA;

  1799.     uint8_t *fragmentB;

  1800.     x86_reg imm8OfPShufW1B;

  1801.     x86_reg imm8OfPShufW2B;

  1802.     x86_reg fragmentLengthB;

  1803.     int fragmentPos;

  1804. 

  1805.     int xpos, i;

  1806. 

  1807.     // create an optimized horizontal scaling routine

  1808. 

  1809.     //code fragment

  1810. 

  1811.     __asm__ volatile(

  1812.         "jmp                         9f                 \n\t"

  1813.     // Begin

  1814.         "0:                                             \n\t"

  1815.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1816.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1817.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1818.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1819.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1820.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1821.         "1:                                             \n\t"

  1822.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1823.         "2:                                             \n\t"

  1824.         "psubw                    %%mm1, %%mm0          \n\t"

  1825.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1826.         "pmullw                   %%mm3, %%mm0          \n\t"

  1827.         "psllw                       $7, %%mm1          \n\t"

  1828.         "paddw                    %%mm1, %%mm0          \n\t"

  1829. 

  1830.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1831. 

  1832.         "add                         $8, %%"REG_a"      \n\t"

  1833.     // End

  1834.         "9:                                             \n\t"

  1835. //        "int $3                                         \n\t"

  1836.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1837.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1838.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1839.         "dec                         %1                 \n\t"

  1840.         "dec                         %2                 \n\t"

  1841.         "sub                         %0, %1             \n\t"

  1842.         "sub                         %0, %2             \n\t"

  1843.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1844.         "sub                         %0, %3             \n\t"

  1845. 

  1846. 

  1847.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1848.         "=r" (fragmentLengthA)

  1849.     );

  1850. 

  1851.     __asm__ volatile(

  1852.         "jmp                         9f                 \n\t"

  1853.     // Begin

  1854.         "0:                                             \n\t"

  1855.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1856.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1857.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1858.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1859.         "1:                                             \n\t"

  1860.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1861.         "2:                                             \n\t"

  1862.         "psubw                    %%mm1, %%mm0          \n\t"

  1863.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1864.         "pmullw                   %%mm3, %%mm0          \n\t"

  1865.         "psllw                       $7, %%mm1          \n\t"

  1866.         "paddw                    %%mm1, %%mm0          \n\t"

  1867. 

  1868.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1869. 

  1870.         "add                         $8, %%"REG_a"      \n\t"

  1871.     // End

  1872.         "9:                                             \n\t"

  1873. //        "int                       $3                   \n\t"

  1874.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1875.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1876.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1877.         "dec                         %1                 \n\t"

  1878.         "dec                         %2                 \n\t"

  1879.         "sub                         %0, %1             \n\t"

  1880.         "sub                         %0, %2             \n\t"

  1881.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1882.         "sub                         %0, %3             \n\t"

  1883. 

  1884. 

  1885.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1886.         "=r" (fragmentLengthB)

  1887.     );

  1888. 

  1889.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1890.     fragmentPos=0;

  1891. 

  1892.     for (i=0; i<dstW/numSplits; i++)

  1893.     {

  1894.         int xx=xpos>>16;

  1895. 

  1896.         if ((i&3) == 0)

  1897.         {

  1898.             int a=0;

  1899.             int b=((xpos+xInc)>>16) - xx;

  1900.             int c=((xpos+xInc*2)>>16) - xx;

  1901.             int d=((xpos+xInc*3)>>16) - xx;

  1902. 

  1903.             filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;

  1904.             filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1905.             filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1906.             filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1907.             filterPos[i/2]= xx;

  1908. 

  1909.             if (d+1<4)

  1910.             {

  1911.                 int maxShift= 3-(d+1);

  1912.                 int shift=0;

  1913. 

  1914.                 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);

  1915. 

  1916.                 funnyCode[fragmentPos + imm8OfPShufW1B]=

  1917.                     (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);

  1918.                 funnyCode[fragmentPos + imm8OfPShufW2B]=

  1919.                     a | (b<<2) | (c<<4) | (d<<6);

  1920. 

  1921.                 if (i+3>=dstW) shift=maxShift; //avoid overread

  1922.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1923. 

  1924.                 if (shift && i>=shift)

  1925.                 {

  1926.                     funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;

  1927.                     funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;

  1928.                     filterPos[i/2]-=shift;

  1929.                 }

  1930. 

  1931.                 fragmentPos+= fragmentLengthB;

  1932.             }

  1933.             else

  1934.             {

  1935.                 int maxShift= 3-d;

  1936.                 int shift=0;

  1937. 

  1938.                 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);

  1939. 

  1940.                 funnyCode[fragmentPos + imm8OfPShufW1A]=

  1941.                 funnyCode[fragmentPos + imm8OfPShufW2A]=

  1942.                     a | (b<<2) | (c<<4) | (d<<6);

  1943. 

  1944.                 if (i+4>=dstW) shift=maxShift; //avoid overread

  1945.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align

  1946. 

  1947.                 if (shift && i>=shift)

  1948.                 {

  1949.                     funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;

  1950.                     funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;

  1951.                     filterPos[i/2]-=shift;

  1952.                 }

  1953. 

  1954.                 fragmentPos+= fragmentLengthA;

  1955.             }

  1956. 

  1957.             funnyCode[fragmentPos]= RET;

  1958.         }

  1959.         xpos+=xInc;

  1960.     }

  1961.     filterPos[((i/2)+1)&(~1)]= xpos>>16; // needed to jump to the next part

  1962. }

  1963. #endif /* COMPILE_MMX2 */

  1964. 

  1965. static void globalInit(void){

  1966.     // generating tables:

  1967.     int i;

  1968.     for (i=0; i<768; i++){

  1969.         int c= av_clip_uint8(i-256);

  1970.         clip_table[i]=c;

  1971.     }

  1972. }

  1973. 

  1974. static SwsFunc getSwsFunc(SwsContext *c)

  1975. {

  1976. #if CONFIG_RUNTIME_CPUDETECT && CONFIG_GPL

  1977.     int flags = c->flags;

  1978. 

  1979. #if ARCH_X86

  1980.     // ordered per speed fastest first

  1981.     if (flags & SWS_CPU_CAPS_MMX2) {

  1982.         sws_init_swScale_MMX2(c);

  1983.         return swScale_MMX2;

  1984.     } else if (flags & SWS_CPU_CAPS_3DNOW) {

  1985.         sws_init_swScale_3DNow(c);

  1986.         return swScale_3DNow;

  1987.     } else if (flags & SWS_CPU_CAPS_MMX) {

  1988.         sws_init_swScale_MMX(c);

  1989.         return swScale_MMX;

  1990.     } else {

  1991.         sws_init_swScale_C(c);

  1992.         return swScale_C;

  1993.     }

  1994. 

  1995. #else

  1996. #if ARCH_PPC

  1997.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1998.         sws_init_swScale_altivec(c);

  1999.         return swScale_altivec;

  2000.     } else {

  2001.         sws_init_swScale_C(c);

  2002.         return swScale_C;

  2003.     }

  2004. #endif

  2005.     sws_init_swScale_C(c);

  2006.     return swScale_C;

  2007. #endif /* ARCH_X86 */

  2008. #else //CONFIG_RUNTIME_CPUDETECT

  2009. #if   HAVE_MMX2

  2010.     sws_init_swScale_MMX2(c);

  2011.     return swScale_MMX2;

  2012. #elif HAVE_AMD3DNOW

  2013.     sws_init_swScale_3DNow(c);

  2014.     return swScale_3DNow;

  2015. #elif HAVE_MMX

  2016.     sws_init_swScale_MMX(c);

  2017.     return swScale_MMX;

  2018. #elif HAVE_ALTIVEC

  2019.     sws_init_swScale_altivec(c);

  2020.     return swScale_altivec;

  2021. #else

  2022.     sws_init_swScale_C(c);

  2023.     return swScale_C;

  2024. #endif

  2025. #endif //!CONFIG_RUNTIME_CPUDETECT

  2026. }

  2027. 

  2028. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2029.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2030.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2031.     /* Copy Y plane */

  2032.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  2033.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  2034.     else

  2035.     {

  2036.         int i;

  2037.         const uint8_t *srcPtr= src[0];

  2038.         uint8_t *dstPtr= dst;

  2039.         for (i=0; i<srcSliceH; i++)

  2040.         {

  2041.             memcpy(dstPtr, srcPtr, c->srcW);

  2042.             srcPtr+= srcStride[0];

  2043.             dstPtr+= dstStride[0];

  2044.         }

  2045.     }

  2046.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  2047.     if (c->dstFormat == PIX_FMT_NV12)

  2048.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  2049.     else

  2050.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  2051. 

  2052.     return srcSliceH;

  2053. }

  2054. 

  2055. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2056.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2057.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2058. 

  2059.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  2060. 

  2061.     return srcSliceH;

  2062. }

  2063. 

  2064. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2065.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2066.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2067. 

  2068.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  2069. 

  2070.     return srcSliceH;

  2071. }

  2072. 

  2073. static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2074.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2075.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2076. 

  2077.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  2078. 

  2079.     return srcSliceH;

  2080. }

  2081. 

  2082. static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2083.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2084.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2085. 

  2086.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  2087. 

  2088.     return srcSliceH;

  2089. }

  2090. 

  2091. static int YUYV2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2092.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2093.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2094.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  2095.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  2096. 

  2097.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2098. 

  2099.     if (dstParam[3])

  2100.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2101. 

  2102.     return srcSliceH;

  2103. }

  2104. 

  2105. static int YUYV2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2106.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2107.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2108.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  2109.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  2110. 

  2111.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2112. 

  2113.     return srcSliceH;

  2114. }

  2115. 

  2116. static int UYVY2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2117.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2118.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2119.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  2120.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  2121. 

  2122.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2123. 

  2124.     if (dstParam[3])

  2125.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2126. 

  2127.     return srcSliceH;

  2128. }

  2129. 

  2130. static int UYVY2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2131.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2132.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2133.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  2134.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  2135. 

  2136.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2137. 

  2138.     return srcSliceH;

  2139. }

  2140. 

  2141. static int pal2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2142.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  2143.     const enum PixelFormat srcFormat= c->srcFormat;

  2144.     const enum PixelFormat dstFormat= c->dstFormat;

  2145.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  2146.                  const uint8_t *palette)=NULL;

  2147.     int i;

  2148.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2149.     uint8_t *srcPtr= src[0];

  2150. 

  2151.     if (!usePal(srcFormat))

  2152.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2153.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  2154. 

  2155.     switch(dstFormat){

  2156.     case PIX_FMT_RGB32  : conv = palette8topacked32; break;

  2157.     case PIX_FMT_BGR32  : conv = palette8topacked32; break;

  2158.     case PIX_FMT_BGR32_1: conv = palette8topacked32; break;

  2159.     case PIX_FMT_RGB32_1: conv = palette8topacked32; break;

  2160.     case PIX_FMT_RGB24  : conv = palette8topacked24; break;

  2161.     case PIX_FMT_BGR24  : conv = palette8topacked24; break;

  2162.     default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2163.                     sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2164.     }

  2165. 

  2166. 

  2167.     for (i=0; i<srcSliceH; i++) {

  2168.         conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  2169.         srcPtr+= srcStride[0];

  2170.         dstPtr+= dstStride[0];

  2171.     }

  2172. 

  2173.     return srcSliceH;

  2174. }

  2175. 

  2176. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  2177. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2178.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  2179.     const enum PixelFormat srcFormat= c->srcFormat;

  2180.     const enum PixelFormat dstFormat= c->dstFormat;

  2181.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  2182.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  2183.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  2184.     const int dstId= fmt_depth(dstFormat) >> 2;

  2185.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  2186. 

  2187.     /* BGR -> BGR */

  2188.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  2189.        || (isRGB(srcFormat) && isRGB(dstFormat))){

  2190.         switch(srcId | (dstId<<4)){

  2191.         case 0x34: conv= rgb16to15; break;

  2192.         case 0x36: conv= rgb24to15; break;

  2193.         case 0x38: conv= rgb32to15; break;

  2194.         case 0x43: conv= rgb15to16; break;

  2195.         case 0x46: conv= rgb24to16; break;

  2196.         case 0x48: conv= rgb32to16; break;

  2197.         case 0x63: conv= rgb15to24; break;

  2198.         case 0x64: conv= rgb16to24; break;

  2199.         case 0x68: conv= rgb32to24; break;

  2200.         case 0x83: conv= rgb15to32; break;

  2201.         case 0x84: conv= rgb16to32; break;

  2202.         case 0x86: conv= rgb24to32; break;

  2203.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2204.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2205.         }

  2206.     }else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  2207.              || (isRGB(srcFormat) && isBGR(dstFormat))){

  2208.         switch(srcId | (dstId<<4)){

  2209.         case 0x33: conv= rgb15tobgr15; break;

  2210.         case 0x34: conv= rgb16tobgr15; break;

  2211.         case 0x36: conv= rgb24tobgr15; break;

  2212.         case 0x38: conv= rgb32tobgr15; break;

  2213.         case 0x43: conv= rgb15tobgr16; break;

  2214.         case 0x44: conv= rgb16tobgr16; break;

  2215.         case 0x46: conv= rgb24tobgr16; break;

  2216.         case 0x48: conv= rgb32tobgr16; break;

  2217.         case 0x63: conv= rgb15tobgr24; break;

  2218.         case 0x64: conv= rgb16tobgr24; break;

  2219.         case 0x66: conv= rgb24tobgr24; break;

  2220.         case 0x68: conv= rgb32tobgr24; break;

  2221.         case 0x83: conv= rgb15tobgr32; break;

  2222.         case 0x84: conv= rgb16tobgr32; break;

  2223.         case 0x86: conv= rgb24tobgr32; break;

  2224.         case 0x88: conv= rgb32tobgr32; break;

  2225.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2226.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2227.         }

  2228.     }else{

  2229.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2230.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  2231.     }

  2232. 

  2233.     if(conv)

  2234.     {

  2235.         uint8_t *srcPtr= src[0];

  2236.         if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)

  2237.             srcPtr += ALT32_CORR;

  2238. 

  2239.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  2240.             conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  2241.         else

  2242.         {

  2243.             int i;

  2244.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2245. 

  2246.             for (i=0; i<srcSliceH; i++)

  2247.             {

  2248.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  2249.                 srcPtr+= srcStride[0];

  2250.                 dstPtr+= dstStride[0];

  2251.             }

  2252.         }

  2253.     }

  2254.     return srcSliceH;

  2255. }

  2256. 

  2257. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2258.                               int srcSliceH, uint8_t* dst[], int dstStride[]){

  2259. 

  2260.     rgb24toyv12(

  2261.         src[0],

  2262.         dst[0]+ srcSliceY    *dstStride[0],

  2263.         dst[1]+(srcSliceY>>1)*dstStride[1],

  2264.         dst[2]+(srcSliceY>>1)*dstStride[2],

  2265.         c->srcW, srcSliceH,

  2266.         dstStride[0], dstStride[1], srcStride[0]);

  2267.     if (dst[3])

  2268.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2269.     return srcSliceH;

  2270. }

  2271. 

  2272. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2273.                              int srcSliceH, uint8_t* dst[], int dstStride[]){

  2274.     int i;

  2275. 

  2276.     /* copy Y */

  2277.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  2278.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  2279.     else{

  2280.         uint8_t *srcPtr= src[0];

  2281.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2282. 

  2283.         for (i=0; i<srcSliceH; i++)

  2284.         {

  2285.             memcpy(dstPtr, srcPtr, c->srcW);

  2286.             srcPtr+= srcStride[0];

  2287.             dstPtr+= dstStride[0];

  2288.         }

  2289.     }

  2290. 

  2291.     if (c->dstFormat==PIX_FMT_YUV420P || c->dstFormat==PIX_FMT_YUVA420P){

  2292.         planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  2293.                  srcSliceH >> 2, srcStride[1], dstStride[1]);

  2294.         planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  2295.                  srcSliceH >> 2, srcStride[2], dstStride[2]);

  2296.     }else{

  2297.         planar2x(src[1], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  2298.                  srcSliceH >> 2, srcStride[1], dstStride[2]);

  2299.         planar2x(src[2], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  2300.                  srcSliceH >> 2, srcStride[2], dstStride[1]);

  2301.     }

  2302.     if (dst[3])

  2303.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2304.     return srcSliceH;

  2305. }

  2306. 

  2307. /* unscaled copy like stuff (assumes nearly identical formats) */

  2308. static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2309.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2310. {

  2311.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  2312.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  2313.     else

  2314.     {

  2315.         int i;

  2316.         uint8_t *srcPtr= src[0];

  2317.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2318.         int length=0;

  2319. 

  2320.         /* universal length finder */

  2321.         while(length+c->srcW <= FFABS(dstStride[0])

  2322.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  2323.         assert(length!=0);

  2324. 

  2325.         for (i=0; i<srcSliceH; i++)

  2326.         {

  2327.             memcpy(dstPtr, srcPtr, length);

  2328.             srcPtr+= srcStride[0];

  2329.             dstPtr+= dstStride[0];

  2330.         }

  2331.     }

  2332.     return srcSliceH;

  2333. }

  2334. 

  2335. static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2336.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2337. {

  2338.     int plane, i, j;

  2339.     for (plane=0; plane<4; plane++)

  2340.     {

  2341.         int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  2342.         int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  2343.         int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  2344.         uint8_t *srcPtr= src[plane];

  2345.         uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  2346. 

  2347.         if (!dst[plane]) continue;

  2348.         // ignore palette for GRAY8

  2349.         if (plane == 1 && !dst[2]) continue;

  2350.         if (!src[plane] || (plane == 1 && !src[2])){

  2351.             if(is16BPS(c->dstFormat))

  2352.                 length*=2;

  2353.             fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);

  2354.         }else

  2355.         {

  2356.             if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)){

  2357.                 if (!isBE(c->srcFormat)) srcPtr++;

  2358.                 for (i=0; i<height; i++){

  2359.                     for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  2360.                     srcPtr+= srcStride[plane];

  2361.                     dstPtr+= dstStride[plane];

  2362.                 }

  2363.             }else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)){

  2364.                 for (i=0; i<height; i++){

  2365.                     for (j=0; j<length; j++){

  2366.                         dstPtr[ j<<1   ] = srcPtr[j];

  2367.                         dstPtr[(j<<1)+1] = srcPtr[j];

  2368.                     }

  2369.                     srcPtr+= srcStride[plane];

  2370.                     dstPtr+= dstStride[plane];

  2371.                 }

  2372.             }else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)

  2373.                   && isBE(c->srcFormat) != isBE(c->dstFormat)){

  2374. 

  2375.                 for (i=0; i<height; i++){

  2376.                     for (j=0; j<length; j++)

  2377.                         ((uint16_t*)dstPtr)[j] = bswap_16(((uint16_t*)srcPtr)[j]);

  2378.                     srcPtr+= srcStride[plane];

  2379.                     dstPtr+= dstStride[plane];

  2380.                 }

  2381.             } else if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  2382.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  2383.             else

  2384.             {

  2385.                 if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))

  2386.                     length*=2;

  2387.                 for (i=0; i<height; i++)

  2388.                 {

  2389.                     memcpy(dstPtr, srcPtr, length);

  2390.                     srcPtr+= srcStride[plane];

  2391.                     dstPtr+= dstStride[plane];

  2392.                 }

  2393.             }

  2394.         }

  2395.     }

  2396.     return srcSliceH;

  2397. }

  2398. 

  2399. 

  2400. static void getSubSampleFactors(int *h, int *v, int format){

  2401.     switch(format){

  2402.     case PIX_FMT_UYVY422:

  2403.     case PIX_FMT_YUYV422:

  2404.         *h=1;

  2405.         *v=0;

  2406.         break;

  2407.     case PIX_FMT_YUV420P:

  2408.     case PIX_FMT_YUV420PLE:

  2409.     case PIX_FMT_YUV420PBE:

  2410.     case PIX_FMT_YUVA420P:

  2411.     case PIX_FMT_GRAY16BE:

  2412.     case PIX_FMT_GRAY16LE:

  2413.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  2414.     case PIX_FMT_NV12:

  2415.     case PIX_FMT_NV21:

  2416.         *h=1;

  2417.         *v=1;

  2418.         break;

  2419.     case PIX_FMT_YUV440P:

  2420.         *h=0;

  2421.         *v=1;

  2422.         break;

  2423.     case PIX_FMT_YUV410P:

  2424.         *h=2;

  2425.         *v=2;

  2426.         break;

  2427.     case PIX_FMT_YUV444P:

  2428.     case PIX_FMT_YUV444PLE:

  2429.     case PIX_FMT_YUV444PBE:

  2430.         *h=0;

  2431.         *v=0;

  2432.         break;

  2433.     case PIX_FMT_YUV422P:

  2434.     case PIX_FMT_YUV422PLE:

  2435.     case PIX_FMT_YUV422PBE:

  2436.         *h=1;

  2437.         *v=0;

  2438.         break;

  2439.     case PIX_FMT_YUV411P:

  2440.         *h=2;

  2441.         *v=0;

  2442.         break;

  2443.     default:

  2444.         *h=0;

  2445.         *v=0;

  2446.         break;

  2447.     }

  2448. }

  2449. 

  2450. static uint16_t roundToInt16(int64_t f){

  2451.     int r= (f + (1<<15))>>16;

  2452.          if (r<-0x7FFF) return 0x8000;

  2453.     else if (r> 0x7FFF) return 0x7FFF;

  2454.     else                return r;

  2455. }

  2456. 

  2457. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){

  2458.     int64_t crv =  inv_table[0];

  2459.     int64_t cbu =  inv_table[1];

  2460.     int64_t cgu = -inv_table[2];

  2461.     int64_t cgv = -inv_table[3];

  2462.     int64_t cy  = 1<<16;

  2463.     int64_t oy  = 0;

  2464. 

  2465.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  2466.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  2467. 

  2468.     c->brightness= brightness;

  2469.     c->contrast  = contrast;

  2470.     c->saturation= saturation;

  2471.     c->srcRange  = srcRange;

  2472.     c->dstRange  = dstRange;

  2473.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2474. 

  2475.     c->uOffset=   0x0400040004000400LL;

  2476.     c->vOffset=   0x0400040004000400LL;

  2477. 

  2478.     if (!srcRange){

  2479.         cy= (cy*255) / 219;

  2480.         oy= 16<<16;

  2481.     }else{

  2482.         crv= (crv*224) / 255;

  2483.         cbu= (cbu*224) / 255;

  2484.         cgu= (cgu*224) / 255;

  2485.         cgv= (cgv*224) / 255;

  2486.     }

  2487. 

  2488.     cy = (cy *contrast             )>>16;

  2489.     crv= (crv*contrast * saturation)>>32;

  2490.     cbu= (cbu*contrast * saturation)>>32;

  2491.     cgu= (cgu*contrast * saturation)>>32;

  2492.     cgv= (cgv*contrast * saturation)>>32;

  2493. 

  2494.     oy -= 256*brightness;

  2495. 

  2496.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  2497.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  2498.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  2499.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  2500.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  2501.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  2502. 

  2503.     c->yuv2rgb_y_coeff  = (int16_t)roundToInt16(cy <<13);

  2504.     c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);

  2505.     c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);

  2506.     c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);

  2507.     c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);

  2508.     c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);

  2509. 

  2510.     ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  2511.     //FIXME factorize

  2512. 

  2513. #ifdef COMPILE_ALTIVEC

  2514.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  2515.         ff_yuv2rgb_init_tables_altivec(c, inv_table, brightness, contrast, saturation);

  2516. #endif

  2517.     return 0;

  2518. }

  2519. 

  2520. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){

  2521.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2522. 

  2523.     *inv_table = c->srcColorspaceTable;

  2524.     *table     = c->dstColorspaceTable;

  2525.     *srcRange  = c->srcRange;

  2526.     *dstRange  = c->dstRange;

  2527.     *brightness= c->brightness;

  2528.     *contrast  = c->contrast;

  2529.     *saturation= c->saturation;

  2530. 

  2531.     return 0;

  2532. }

  2533. 

  2534. static int handle_jpeg(enum PixelFormat *format)

  2535. {

  2536.     switch (*format) {

  2537.         case PIX_FMT_YUVJ420P:

  2538.             *format = PIX_FMT_YUV420P;

  2539.             return 1;

  2540.         case PIX_FMT_YUVJ422P:

  2541.             *format = PIX_FMT_YUV422P;

  2542.             return 1;

  2543.         case PIX_FMT_YUVJ444P:

  2544.             *format = PIX_FMT_YUV444P;

  2545.             return 1;

  2546.         case PIX_FMT_YUVJ440P:

  2547.             *format = PIX_FMT_YUV440P;

  2548.             return 1;

  2549.         default:

  2550.             return 0;

  2551.     }

  2552. }

  2553. 

  2554. SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  2555.                            SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)

  2556. {

  2557. 

  2558.     SwsContext *c;

  2559.     int i;

  2560.     int usesVFilter, usesHFilter;

  2561.     int unscaled, needsDither;

  2562.     int srcRange, dstRange;

  2563.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2564. #if ARCH_X86

  2565.     if (flags & SWS_CPU_CAPS_MMX)

  2566.         __asm__ volatile("emms\n\t"::: "memory");

  2567. #endif

  2568. 

  2569. #if !CONFIG_RUNTIME_CPUDETECT || !CONFIG_GPL //ensure that the flags match the compiled variant if cpudetect is off

  2570.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2571. #if   HAVE_MMX2

  2572.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2573. #elif HAVE_AMD3DNOW

  2574.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2575. #elif HAVE_MMX

  2576.     flags |= SWS_CPU_CAPS_MMX;

  2577. #elif HAVE_ALTIVEC

  2578.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2579. #elif ARCH_BFIN

  2580.     flags |= SWS_CPU_CAPS_BFIN;

  2581. #endif

  2582. #endif /* CONFIG_RUNTIME_CPUDETECT */

  2583.     if (clip_table[512] != 255) globalInit();

  2584.     if (!rgb15to16) sws_rgb2rgb_init(flags);

  2585. 

  2586.     unscaled = (srcW == dstW && srcH == dstH);

  2587.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2588.         && (fmt_depth(dstFormat))<24

  2589.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2590. 

  2591.     srcRange = handle_jpeg(&srcFormat);

  2592.     dstRange = handle_jpeg(&dstFormat);

  2593. 

  2594.     if (!isSupportedIn(srcFormat))

  2595.     {

  2596.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));

  2597.         return NULL;

  2598.     }

  2599.     if (!isSupportedOut(dstFormat))

  2600.     {

  2601.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));

  2602.         return NULL;

  2603.     }

  2604. 

  2605.     i= flags & ( SWS_POINT

  2606.                 |SWS_AREA

  2607.                 |SWS_BILINEAR

  2608.                 |SWS_FAST_BILINEAR

  2609.                 |SWS_BICUBIC

  2610.                 |SWS_X

  2611.                 |SWS_GAUSS

  2612.                 |SWS_LANCZOS

  2613.                 |SWS_SINC

  2614.                 |SWS_SPLINE

  2615.                 |SWS_BICUBLIN);

  2616.     if(!i || (i & (i-1)))

  2617.     {

  2618.         av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be chosen\n");

  2619.         return NULL;

  2620.     }

  2621. 

  2622.     /* sanity check */

  2623.     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

  2624.     {

  2625.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2626.                srcW, srcH, dstW, dstH);

  2627.         return NULL;

  2628.     }

  2629.     if(srcW > VOFW || dstW > VOFW){

  2630.         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile-time maximum width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");

  2631.         return NULL;

  2632.     }

  2633. 

  2634.     if (!dstFilter) dstFilter= &dummyFilter;

  2635.     if (!srcFilter) srcFilter= &dummyFilter;

  2636. 

  2637.     c= av_mallocz(sizeof(SwsContext));

  2638. 

  2639.     c->av_class = &sws_context_class;

  2640.     c->srcW= srcW;

  2641.     c->srcH= srcH;

  2642.     c->dstW= dstW;

  2643.     c->dstH= dstH;

  2644.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2645.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2646.     c->flags= flags;

  2647.     c->dstFormat= dstFormat;

  2648.     c->srcFormat= srcFormat;

  2649.     c->vRounder= 4* 0x0001000100010001ULL;

  2650. 

  2651.     usesHFilter= usesVFilter= 0;

  2652.     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;

  2653.     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;

  2654.     if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;

  2655.     if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;

  2656.     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;

  2657.     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;

  2658.     if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;

  2659.     if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;

  2660. 

  2661.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2662.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2663. 

  2664.     // reuse chroma for 2 pixels RGB/BGR unless user wants full chroma interpolation

  2665.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2666. 

  2667.     // drop some chroma lines if the user wants it

  2668.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2669.     c->chrSrcVSubSample+= c->vChrDrop;

  2670. 

  2671.     // drop every other pixel for chroma calculation unless user wants full chroma

  2672.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2673.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2674.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2675.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE

  2676.       && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2677.         c->chrSrcHSubSample=1;

  2678. 

  2679.     if (param){

  2680.         c->param[0] = param[0];

  2681.         c->param[1] = param[1];

  2682.     }else{

  2683.         c->param[0] =

  2684.         c->param[1] = SWS_PARAM_DEFAULT;

  2685.     }

  2686. 

  2687.     c->chrIntHSubSample= c->chrDstHSubSample;

  2688.     c->chrIntVSubSample= c->chrSrcVSubSample;

  2689. 

  2690.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2691.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2692.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2693.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2694.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2695. 

  2696.     sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);

  2697. 

  2698.     /* unscaled special cases */

  2699.     if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat)))

  2700.     {

  2701.         /* yv12_to_nv12 */

  2702.         if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))

  2703.         {

  2704.             c->swScale= PlanarToNV12Wrapper;

  2705.         }

  2706.         /* yuv2bgr */

  2707.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && (isBGR(dstFormat) || isRGB(dstFormat))

  2708.             && !(flags & SWS_ACCURATE_RND) && !(dstH&1))

  2709.         {

  2710.             c->swScale= ff_yuv2rgb_get_func_ptr(c);

  2711.         }

  2712. 

  2713.         if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT))

  2714.         {

  2715.             c->swScale= yvu9toyv12Wrapper;

  2716.         }

  2717. 

  2718.         /* bgr24toYV12 */

  2719.         if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))

  2720.             c->swScale= bgr24toyv12Wrapper;

  2721. 

  2722.         /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  2723.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2724.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2725.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2726.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2727.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2728.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2729.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2730.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2731.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2732.            && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  2733.                                              && dstFormat != PIX_FMT_RGB32_1

  2734.                                              && dstFormat != PIX_FMT_BGR32_1

  2735.            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2736.              c->swScale= rgb2rgbWrapper;

  2737. 

  2738.         if ((usePal(srcFormat) && (

  2739.                  dstFormat == PIX_FMT_RGB32   ||

  2740.                  dstFormat == PIX_FMT_RGB32_1 ||

  2741.                  dstFormat == PIX_FMT_RGB24   ||

  2742.                  dstFormat == PIX_FMT_BGR32   ||

  2743.                  dstFormat == PIX_FMT_BGR32_1 ||

  2744.                  dstFormat == PIX_FMT_BGR24)))

  2745.              c->swScale= pal2rgbWrapper;

  2746. 

  2747.         if (srcFormat == PIX_FMT_YUV422P)

  2748.         {

  2749.             if (dstFormat == PIX_FMT_YUYV422)

  2750.                 c->swScale= YUV422PToYuy2Wrapper;

  2751.             else if (dstFormat == PIX_FMT_UYVY422)

  2752.                 c->swScale= YUV422PToUyvyWrapper;

  2753.         }

  2754. 

  2755.         /* LQ converters if -sws 0 or -sws 4*/

  2756.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){

  2757.             /* yv12_to_yuy2 */

  2758.             if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P)

  2759.             {

  2760.                 if (dstFormat == PIX_FMT_YUYV422)

  2761.                     c->swScale= PlanarToYuy2Wrapper;

  2762.                 else if (dstFormat == PIX_FMT_UYVY422)

  2763.                     c->swScale= PlanarToUyvyWrapper;

  2764.             }

  2765.         }

  2766.         if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  2767.             c->swScale= YUYV2YUV420Wrapper;

  2768.         if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  2769.             c->swScale= UYVY2YUV420Wrapper;

  2770.         if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)

  2771.             c->swScale= YUYV2YUV422Wrapper;

  2772.         if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)

  2773.             c->swScale= UYVY2YUV422Wrapper;

  2774. 

  2775. #ifdef COMPILE_ALTIVEC

  2776.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2777.             !(c->flags & SWS_BITEXACT) &&

  2778.             srcFormat == PIX_FMT_YUV420P) {

  2779.           // unscaled YV12 -> packed YUV, we want speed

  2780.           if (dstFormat == PIX_FMT_YUYV422)

  2781.               c->swScale= yv12toyuy2_unscaled_altivec;

  2782.           else if (dstFormat == PIX_FMT_UYVY422)

  2783.               c->swScale= yv12touyvy_unscaled_altivec;

  2784.         }

  2785. #endif

  2786. 

  2787.         /* simple copy */

  2788.         if (  srcFormat == dstFormat

  2789.             || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)

  2790.             || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)

  2791.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2792.             || (isPlanarYUV(dstFormat) && isGray(srcFormat))

  2793.             || (isGray(dstFormat) && isGray(srcFormat))

  2794.             || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)

  2795.                 && c->chrDstHSubSample == c->chrSrcHSubSample

  2796.                 && c->chrDstVSubSample == c->chrSrcVSubSample))

  2797.         {

  2798.             if (isPacked(c->srcFormat))

  2799.                 c->swScale= packedCopy;

  2800.             else /* Planar YUV or gray */

  2801.                 c->swScale= planarCopy;

  2802.         }

  2803. #if ARCH_BFIN

  2804.         if (flags & SWS_CPU_CAPS_BFIN)

  2805.             ff_bfin_get_unscaled_swscale (c);

  2806. #endif

  2807. 

  2808.         if (c->swScale){

  2809.             if (flags&SWS_PRINT_INFO)

  2810.                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",

  2811.                                 sws_format_name(srcFormat), sws_format_name(dstFormat));

  2812.             return c;

  2813.         }

  2814.     }

  2815. 

  2816.     if (flags & SWS_CPU_CAPS_MMX2)

  2817.     {

  2818.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2819.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))

  2820.         {

  2821.             if (flags&SWS_PRINT_INFO)

  2822.                 av_log(c, AV_LOG_INFO, "output width is not a multiple of 32 -> no MMX2 scaler\n");

  2823.         }

  2824.         if (usesHFilter) c->canMMX2BeUsed=0;

  2825.     }

  2826.     else

  2827.         c->canMMX2BeUsed=0;

  2828. 

  2829.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2830.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2831. 

  2832.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2833.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2834.     // n-2 is the last chrominance sample available

  2835.     // this is not perfect, but no one should notice the difference, the more correct variant

  2836.     // would be like the vertical one, but that would require some special code for the

  2837.     // first and last pixel

  2838.     if (flags&SWS_FAST_BILINEAR)

  2839.     {

  2840.         if (c->canMMX2BeUsed)

  2841.         {

  2842.             c->lumXInc+= 20;

  2843.             c->chrXInc+= 20;

  2844.         }

  2845.         //we don't use the x86 asm scaler if MMX is available

  2846.         else if (flags & SWS_CPU_CAPS_MMX)

  2847.         {

  2848.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2849.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2850.         }

  2851.     }

  2852. 

  2853.     /* precalculate horizontal scaler filter coefficients */

  2854.     {

  2855.         const int filterAlign=

  2856.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2857.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2858.             1;

  2859. 

  2860.         initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2861.                    srcW      ,       dstW, filterAlign, 1<<14,

  2862.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2863.                    srcFilter->lumH, dstFilter->lumH, c->param);

  2864.         initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2865.                    c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2866.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2867.                    srcFilter->chrH, dstFilter->chrH, c->param);

  2868. 

  2869. #define MAX_FUNNY_CODE_SIZE 10000

  2870. #if defined(COMPILE_MMX2)

  2871. // can't downscale !!!

  2872.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))

  2873.         {

  2874. #ifdef MAP_ANONYMOUS

  2875.             c->funnyYCode  = mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2876.             c->funnyUVCode = mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2877. #elif HAVE_VIRTUALALLOC

  2878.             c->funnyYCode  = VirtualAlloc(NULL, MAX_FUNNY_CODE_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2879.             c->funnyUVCode = VirtualAlloc(NULL, MAX_FUNNY_CODE_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2880. #else

  2881.             c->funnyYCode  = av_malloc(MAX_FUNNY_CODE_SIZE);

  2882.             c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2883. #endif

  2884. 

  2885.             c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));

  2886.             c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));

  2887.             c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));

  2888.             c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));

  2889. 

  2890.             initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2891.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2892.         }

  2893. #endif /* defined(COMPILE_MMX2) */

  2894.     } // initialize horizontal stuff

  2895. 

  2896. 

  2897. 

  2898.     /* precalculate vertical scaler filter coefficients */

  2899.     {

  2900.         const int filterAlign=

  2901.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2902.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2903.             1;

  2904. 

  2905.         initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2906.                    srcH      ,        dstH, filterAlign, (1<<12),

  2907.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2908.                    srcFilter->lumV, dstFilter->lumV, c->param);

  2909.         initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2910.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12),

  2911.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2912.                    srcFilter->chrV, dstFilter->chrV, c->param);

  2913. 

  2914. #if HAVE_ALTIVEC

  2915.         c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);

  2916.         c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);

  2917. 

  2918.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2919.             int j;

  2920.             short *p = (short *)&c->vYCoeffsBank[i];

  2921.             for (j=0;j<8;j++)

  2922.                 p[j] = c->vLumFilter[i];

  2923.         }

  2924. 

  2925.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2926.             int j;

  2927.             short *p = (short *)&c->vCCoeffsBank[i];

  2928.             for (j=0;j<8;j++)

  2929.                 p[j] = c->vChrFilter[i];

  2930.         }

  2931. #endif

  2932.     }

  2933. 

  2934.     // calculate buffer sizes so that they won't run out while handling these damn slices

  2935.     c->vLumBufSize= c->vLumFilterSize;

  2936.     c->vChrBufSize= c->vChrFilterSize;

  2937.     for (i=0; i<dstH; i++)

  2938.     {

  2939.         int chrI= i*c->chrDstH / dstH;

  2940.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2941.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2942. 

  2943.         nextSlice>>= c->chrSrcVSubSample;

  2944.         nextSlice<<= c->chrSrcVSubSample;

  2945.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2946.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];

  2947.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2948.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2949.     }

  2950. 

  2951.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2952.     c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2953.     c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));

  2954.     if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat))

  2955.         c->alpPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2956.     //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)

  2957.     /* align at 16 bytes for AltiVec */

  2958.     for (i=0; i<c->vLumBufSize; i++)

  2959.         c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2960.     for (i=0; i<c->vChrBufSize; i++)

  2961.         c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);

  2962.     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf)

  2963.         for (i=0; i<c->vLumBufSize; i++)

  2964.             c->alpPixBuf[i]= c->alpPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2965. 

  2966.     //try to avoid drawing green stuff between the right end and the stride end

  2967.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);

  2968. 

  2969.     assert(2*VOFW == VOF);

  2970. 

  2971.     assert(c->chrDstH <= dstH);

  2972. 

  2973.     if (flags&SWS_PRINT_INFO)

  2974.     {

  2975. #ifdef DITHER1XBPP

  2976.         const char *dither= " dithered";

  2977. #else

  2978.         const char *dither= "";

  2979. #endif

  2980.         if (flags&SWS_FAST_BILINEAR)

  2981.             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");

  2982.         else if (flags&SWS_BILINEAR)

  2983.             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");

  2984.         else if (flags&SWS_BICUBIC)

  2985.             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");

  2986.         else if (flags&SWS_X)

  2987.             av_log(c, AV_LOG_INFO, "Experimental scaler, ");

  2988.         else if (flags&SWS_POINT)

  2989.             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");

  2990.         else if (flags&SWS_AREA)

  2991.             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");

  2992.         else if (flags&SWS_BICUBLIN)

  2993.             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");

  2994.         else if (flags&SWS_GAUSS)

  2995.             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");

  2996.         else if (flags&SWS_SINC)

  2997.             av_log(c, AV_LOG_INFO, "Sinc scaler, ");

  2998.         else if (flags&SWS_LANCZOS)

  2999.             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");

  3000.         else if (flags&SWS_SPLINE)

  3001.             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");

  3002.         else

  3003.             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");

  3004. 

  3005.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  3006.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  3007.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  3008.         else

  3009.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  3010.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  3011. 

  3012.         if (flags & SWS_CPU_CAPS_MMX2)

  3013.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  3014.         else if (flags & SWS_CPU_CAPS_3DNOW)

  3015.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  3016.         else if (flags & SWS_CPU_CAPS_MMX)

  3017.             av_log(c, AV_LOG_INFO, "using MMX\n");

  3018.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  3019.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  3020.         else

  3021.             av_log(c, AV_LOG_INFO, "using C\n");

  3022.     }

  3023. 

  3024.     if (flags & SWS_PRINT_INFO)

  3025.     {

  3026.         if (flags & SWS_CPU_CAPS_MMX)

  3027.         {

  3028.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  3029.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  3030.             else

  3031.             {

  3032.                 if (c->hLumFilterSize==4)

  3033.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");

  3034.                 else if (c->hLumFilterSize==8)

  3035.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");

  3036.                 else

  3037.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");

  3038. 

  3039.                 if (c->hChrFilterSize==4)

  3040.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");

  3041.                 else if (c->hChrFilterSize==8)

  3042.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");

  3043.                 else

  3044.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");

  3045.             }

  3046.         }

  3047.         else

  3048.         {

  3049. #if ARCH_X86

  3050.             av_log(c, AV_LOG_VERBOSE, "using x86 asm scaler for horizontal scaling\n");

  3051. #else

  3052.             if (flags & SWS_FAST_BILINEAR)

  3053.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");

  3054.             else

  3055.                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");

  3056. #endif

  3057.         }

  3058.         if (isPlanarYUV(dstFormat))

  3059.         {

  3060.             if (c->vLumFilterSize==1)

  3061.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3062.             else

  3063.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3064.         }

  3065.         else

  3066.         {

  3067.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  3068.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  3069.                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3070.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  3071.                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3072.             else

  3073.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3074.         }

  3075. 

  3076.         if (dstFormat==PIX_FMT_BGR24)

  3077.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 converter\n",

  3078.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  3079.         else if (dstFormat==PIX_FMT_RGB32)

  3080.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3081.         else if (dstFormat==PIX_FMT_BGR565)

  3082.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3083.         else if (dstFormat==PIX_FMT_BGR555)

  3084.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3085. 

  3086.         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  3087.     }

  3088.     if (flags & SWS_PRINT_INFO)

  3089.     {

  3090.         av_log(c, AV_LOG_DEBUG, "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  3091.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  3092.         av_log(c, AV_LOG_DEBUG, "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  3093.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  3094.     }

  3095. 

  3096.     c->swScale= getSwsFunc(c);

  3097.     return c;

  3098. }

  3099. 

  3100. static void reset_ptr(uint8_t* src[], int format){

  3101.     if(!isALPHA(format))

  3102.         src[3]=NULL;

  3103.     if(!isPlanarYUV(format)){

  3104.         src[3]=src[2]=NULL;

  3105.         if(   format != PIX_FMT_PAL8

  3106.            && format != PIX_FMT_RGB8

  3107.            && format != PIX_FMT_BGR8

  3108.            && format != PIX_FMT_RGB4_BYTE

  3109.            && format != PIX_FMT_BGR4_BYTE

  3110.           )

  3111.             src[1]= NULL;

  3112.     }

  3113. }

  3114. 

  3115. /**

  3116.  * swscale wrapper, so we don't need to export the SwsContext.

  3117.  * Assumes planar YUV to be in YUV order instead of YVU.

  3118.  */

  3119. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  3120.               int srcSliceH, uint8_t* dst[], int dstStride[]){

  3121.     int i;

  3122.     uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};

  3123.     uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};

  3124. 

  3125.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  3126.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  3127.         return 0;

  3128.     }

  3129.     if (c->sliceDir == 0) {

  3130.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  3131.     }

  3132. 

  3133.     if (usePal(c->srcFormat)){

  3134.         for (i=0; i<256; i++){

  3135.             int p, r, g, b,y,u,v;

  3136.             if(c->srcFormat == PIX_FMT_PAL8){

  3137.                 p=((uint32_t*)(src[1]))[i];

  3138.                 r= (p>>16)&0xFF;

  3139.                 g= (p>> 8)&0xFF;

  3140.                 b=  p     &0xFF;

  3141.             }else if(c->srcFormat == PIX_FMT_RGB8){

  3142.                 r= (i>>5    )*36;

  3143.                 g= ((i>>2)&7)*36;

  3144.                 b= (i&3     )*85;

  3145.             }else if(c->srcFormat == PIX_FMT_BGR8){

  3146.                 b= (i>>6    )*85;

  3147.                 g= ((i>>3)&7)*36;

  3148.                 r= (i&7     )*36;

  3149.             }else if(c->srcFormat == PIX_FMT_RGB4_BYTE){

  3150.                 r= (i>>3    )*255;

  3151.                 g= ((i>>1)&3)*85;

  3152.                 b= (i&1     )*255;

  3153.             }else {

  3154.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  3155.                 b= (i>>3    )*255;

  3156.                 g= ((i>>1)&3)*85;

  3157.                 r= (i&1     )*255;

  3158.             }

  3159.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3160.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3161.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3162.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  3163. 

  3164. 

  3165.             switch(c->dstFormat) {

  3166.             case PIX_FMT_BGR32:

  3167. #ifndef WORDS_BIGENDIAN

  3168.             case PIX_FMT_RGB24:

  3169. #endif

  3170.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  3171.                 break;

  3172.             case PIX_FMT_BGR32_1:

  3173. #ifdef  WORDS_BIGENDIAN

  3174.             case PIX_FMT_BGR24:

  3175. #endif

  3176.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  3177.                 break;

  3178.             case PIX_FMT_RGB32_1:

  3179. #ifdef  WORDS_BIGENDIAN

  3180.             case PIX_FMT_RGB24:

  3181. #endif

  3182.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  3183.                 break;

  3184.             case PIX_FMT_RGB32:

  3185. #ifndef WORDS_BIGENDIAN

  3186.             case PIX_FMT_BGR24:

  3187. #endif

  3188.             default:

  3189.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  3190.             }

  3191.         }

  3192.     }

  3193. 

  3194.     // copy strides, so they can safely be modified

  3195.     if (c->sliceDir == 1) {

  3196.         // slices go from top to bottom

  3197.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};

  3198.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};

  3199. 

  3200.         reset_ptr(src2, c->srcFormat);

  3201.         reset_ptr(dst2, c->dstFormat);

  3202. 

  3203.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);

  3204.     } else {

  3205.         // slices go from bottom to top => we flip the image internally

  3206.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};

  3207.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};

  3208. 

  3209.         src2[0] += (srcSliceH-1)*srcStride[0];

  3210.         if (!usePal(c->srcFormat))

  3211.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  3212.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  3213.         src2[3] += (srcSliceH-1)*srcStride[3];

  3214.         dst2[0] += ( c->dstH                      -1)*dstStride[0];

  3215.         dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];

  3216.         dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];

  3217.         dst2[3] += ( c->dstH                      -1)*dstStride[3];

  3218. 

  3219.         reset_ptr(src2, c->srcFormat);

  3220.         reset_ptr(dst2, c->dstFormat);

  3221. 

  3222.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  3223.     }

  3224. }

  3225. 

  3226. #if LIBSWSCALE_VERSION_MAJOR < 1

  3227. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  3228.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  3229.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  3230. }

  3231. #endif

  3232. 

  3233. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  3234.                                 float lumaSharpen, float chromaSharpen,

  3235.                                 float chromaHShift, float chromaVShift,

  3236.                                 int verbose)

  3237. {

  3238.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  3239. 

  3240.     if (lumaGBlur!=0.0){

  3241.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  3242.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  3243.     }else{

  3244.         filter->lumH= sws_getIdentityVec();

  3245.         filter->lumV= sws_getIdentityVec();

  3246.     }

  3247. 

  3248.     if (chromaGBlur!=0.0){

  3249.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  3250.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  3251.     }else{

  3252.         filter->chrH= sws_getIdentityVec();

  3253.         filter->chrV= sws_getIdentityVec();

  3254.     }

  3255. 

  3256.     if (chromaSharpen!=0.0){

  3257.         SwsVector *id= sws_getIdentityVec();

  3258.         sws_scaleVec(filter->chrH, -chromaSharpen);

  3259.         sws_scaleVec(filter->chrV, -chromaSharpen);

  3260.         sws_addVec(filter->chrH, id);

  3261.         sws_addVec(filter->chrV, id);

  3262.         sws_freeVec(id);

  3263.     }

  3264. 

  3265.     if (lumaSharpen!=0.0){

  3266.         SwsVector *id= sws_getIdentityVec();

  3267.         sws_scaleVec(filter->lumH, -lumaSharpen);

  3268.         sws_scaleVec(filter->lumV, -lumaSharpen);

  3269.         sws_addVec(filter->lumH, id);

  3270.         sws_addVec(filter->lumV, id);

  3271.         sws_freeVec(id);

  3272.     }

  3273. 

  3274.     if (chromaHShift != 0.0)

  3275.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  3276. 

  3277.     if (chromaVShift != 0.0)

  3278.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  3279. 

  3280.     sws_normalizeVec(filter->chrH, 1.0);

  3281.     sws_normalizeVec(filter->chrV, 1.0);

  3282.     sws_normalizeVec(filter->lumH, 1.0);

  3283.     sws_normalizeVec(filter->lumV, 1.0);

  3284. 

  3285.     if (verbose) sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);

  3286.     if (verbose) sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);

  3287. 

  3288.     return filter;

  3289. }

  3290. 

  3291. SwsVector *sws_getGaussianVec(double variance, double quality){

  3292.     const int length= (int)(variance*quality + 0.5) | 1;

  3293.     int i;

  3294.     double *coeff= av_malloc(length*sizeof(double));

  3295.     double middle= (length-1)*0.5;

  3296.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3297. 

  3298.     vec->coeff= coeff;

  3299.     vec->length= length;

  3300. 

  3301.     for (i=0; i<length; i++)

  3302.     {

  3303.         double dist= i-middle;

  3304.         coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);

  3305.     }

  3306. 

  3307.     sws_normalizeVec(vec, 1.0);

  3308. 

  3309.     return vec;

  3310. }

  3311. 

  3312. SwsVector *sws_getConstVec(double c, int length){

  3313.     int i;

  3314.     double *coeff= av_malloc(length*sizeof(double));

  3315.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3316. 

  3317.     vec->coeff= coeff;

  3318.     vec->length= length;

  3319. 

  3320.     for (i=0; i<length; i++)

  3321.         coeff[i]= c;

  3322. 

  3323.     return vec;

  3324. }

  3325. 

  3326. 

  3327. SwsVector *sws_getIdentityVec(void){

  3328.     return sws_getConstVec(1.0, 1);

  3329. }

  3330. 

  3331. double sws_dcVec(SwsVector *a){

  3332.     int i;

  3333.     double sum=0;

  3334. 

  3335.     for (i=0; i<a->length; i++)

  3336.         sum+= a->coeff[i];

  3337. 

  3338.     return sum;

  3339. }

  3340. 

  3341. void sws_scaleVec(SwsVector *a, double scalar){

  3342.     int i;

  3343. 

  3344.     for (i=0; i<a->length; i++)

  3345.         a->coeff[i]*= scalar;

  3346. }

  3347. 

  3348. void sws_normalizeVec(SwsVector *a, double height){

  3349.     sws_scaleVec(a, height/sws_dcVec(a));

  3350. }

  3351. 

  3352. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){

  3353.     int length= a->length + b->length - 1;

  3354.     double *coeff= av_malloc(length*sizeof(double));

  3355.     int i, j;

  3356.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3357. 

  3358.     vec->coeff= coeff;

  3359.     vec->length= length;

  3360. 

  3361.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3362. 

  3363.     for (i=0; i<a->length; i++)

  3364.     {

  3365.         for (j=0; j<b->length; j++)

  3366.         {

  3367.             coeff[i+j]+= a->coeff[i]*b->coeff[j];

  3368.         }

  3369.     }

  3370. 

  3371.     return vec;

  3372. }

  3373. 

  3374. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){

  3375.     int length= FFMAX(a->length, b->length);

  3376.     double *coeff= av_malloc(length*sizeof(double));

  3377.     int i;

  3378.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3379. 

  3380.     vec->coeff= coeff;

  3381.     vec->length= length;

  3382. 

  3383.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3384. 

  3385.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3386.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  3387. 

  3388.     return vec;

  3389. }

  3390. 

  3391. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){

  3392.     int length= FFMAX(a->length, b->length);

  3393.     double *coeff= av_malloc(length*sizeof(double));

  3394.     int i;

  3395.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3396. 

  3397.     vec->coeff= coeff;

  3398.     vec->length= length;

  3399. 

  3400.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3401. 

  3402.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3403.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  3404. 

  3405.     return vec;

  3406. }

  3407. 

  3408. /* shift left / or right if "shift" is negative */

  3409. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){

  3410.     int length= a->length + FFABS(shift)*2;

  3411.     double *coeff= av_malloc(length*sizeof(double));

  3412.     int i;

  3413.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3414. 

  3415.     vec->coeff= coeff;

  3416.     vec->length= length;

  3417. 

  3418.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3419. 

  3420.     for (i=0; i<a->length; i++)

  3421.     {

  3422.         coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  3423.     }

  3424. 

  3425.     return vec;

  3426. }

  3427. 

  3428. void sws_shiftVec(SwsVector *a, int shift){

  3429.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  3430.     av_free(a->coeff);

  3431.     a->coeff= shifted->coeff;

  3432.     a->length= shifted->length;

  3433.     av_free(shifted);

  3434. }

  3435. 

  3436. void sws_addVec(SwsVector *a, SwsVector *b){

  3437.     SwsVector *sum= sws_sumVec(a, b);

  3438.     av_free(a->coeff);

  3439.     a->coeff= sum->coeff;

  3440.     a->length= sum->length;

  3441.     av_free(sum);

  3442. }

  3443. 

  3444. void sws_subVec(SwsVector *a, SwsVector *b){

  3445.     SwsVector *diff= sws_diffVec(a, b);

  3446.     av_free(a->coeff);

  3447.     a->coeff= diff->coeff;

  3448.     a->length= diff->length;

  3449.     av_free(diff);

  3450. }

  3451. 

  3452. void sws_convVec(SwsVector *a, SwsVector *b){

  3453.     SwsVector *conv= sws_getConvVec(a, b);

  3454.     av_free(a->coeff);

  3455.     a->coeff= conv->coeff;

  3456.     a->length= conv->length;

  3457.     av_free(conv);

  3458. }

  3459. 

  3460. SwsVector *sws_cloneVec(SwsVector *a){

  3461.     double *coeff= av_malloc(a->length*sizeof(double));

  3462.     int i;

  3463.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3464. 

  3465.     vec->coeff= coeff;

  3466.     vec->length= a->length;

  3467. 

  3468.     for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];

  3469. 

  3470.     return vec;

  3471. }

  3472. 

  3473. void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level){

  3474.     int i;

  3475.     double max=0;

  3476.     double min=0;

  3477.     double range;

  3478. 

  3479.     for (i=0; i<a->length; i++)

  3480.         if (a->coeff[i]>max) max= a->coeff[i];

  3481. 

  3482.     for (i=0; i<a->length; i++)

  3483.         if (a->coeff[i]<min) min= a->coeff[i];

  3484. 

  3485.     range= max - min;

  3486. 

  3487.     for (i=0; i<a->length; i++)

  3488.     {

  3489.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  3490.         av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);

  3491.         for (;x>0; x--) av_log(log_ctx, log_level, " ");

  3492.         av_log(log_ctx, log_level, "|\n");

  3493.     }

  3494. }

  3495. 

  3496. #if LIBSWSCALE_VERSION_MAJOR < 1

  3497. void sws_printVec(SwsVector *a){

  3498.     sws_printVec2(a, NULL, AV_LOG_DEBUG);

  3499. }

  3500. #endif

  3501. 

  3502. void sws_freeVec(SwsVector *a){

  3503.     if (!a) return;

  3504.     av_freep(&a->coeff);

  3505.     a->length=0;

  3506.     av_free(a);

  3507. }

  3508. 

  3509. void sws_freeFilter(SwsFilter *filter){

  3510.     if (!filter) return;

  3511. 

  3512.     if (filter->lumH) sws_freeVec(filter->lumH);

  3513.     if (filter->lumV) sws_freeVec(filter->lumV);

  3514.     if (filter->chrH) sws_freeVec(filter->chrH);

  3515.     if (filter->chrV) sws_freeVec(filter->chrV);

  3516.     av_free(filter);

  3517. }

  3518. 

  3519. 

  3520. void sws_freeContext(SwsContext *c){

  3521.     int i;

  3522.     if (!c) return;

  3523. 

  3524.     if (c->lumPixBuf)

  3525.     {

  3526.         for (i=0; i<c->vLumBufSize; i++)

  3527.             av_freep(&c->lumPixBuf[i]);

  3528.         av_freep(&c->lumPixBuf);

  3529.     }

  3530. 

  3531.     if (c->chrPixBuf)

  3532.     {

  3533.         for (i=0; i<c->vChrBufSize; i++)

  3534.             av_freep(&c->chrPixBuf[i]);

  3535.         av_freep(&c->chrPixBuf);

  3536.     }

  3537. 

  3538.     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf){

  3539.         for (i=0; i<c->vLumBufSize; i++)

  3540.             av_freep(&c->alpPixBuf[i]);

  3541.         av_freep(&c->alpPixBuf);

  3542.     }

  3543. 

  3544.     av_freep(&c->vLumFilter);

  3545.     av_freep(&c->vChrFilter);

  3546.     av_freep(&c->hLumFilter);

  3547.     av_freep(&c->hChrFilter);

  3548. #if HAVE_ALTIVEC

  3549.     av_freep(&c->vYCoeffsBank);

  3550.     av_freep(&c->vCCoeffsBank);

  3551. #endif

  3552. 

  3553.     av_freep(&c->vLumFilterPos);

  3554.     av_freep(&c->vChrFilterPos);

  3555.     av_freep(&c->hLumFilterPos);

  3556.     av_freep(&c->hChrFilterPos);

  3557. 

  3558. #if ARCH_X86 && CONFIG_GPL

  3559. #ifdef MAP_ANONYMOUS

  3560.     if (c->funnyYCode ) munmap(c->funnyYCode , MAX_FUNNY_CODE_SIZE);

  3561.     if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);

  3562. #elif HAVE_VIRTUALALLOC

  3563.     if (c->funnyYCode ) VirtualFree(c->funnyYCode , MAX_FUNNY_CODE_SIZE, MEM_RELEASE);

  3564.     if (c->funnyUVCode) VirtualFree(c->funnyUVCode, MAX_FUNNY_CODE_SIZE, MEM_RELEASE);

  3565. #else

  3566.     av_free(c->funnyYCode );

  3567.     av_free(c->funnyUVCode);

  3568. #endif

  3569.     c->funnyYCode=NULL;

  3570.     c->funnyUVCode=NULL;

  3571. #endif /* ARCH_X86 && CONFIG_GPL */

  3572. 

  3573.     av_freep(&c->lumMmx2Filter);

  3574.     av_freep(&c->chrMmx2Filter);

  3575.     av_freep(&c->lumMmx2FilterPos);

  3576.     av_freep(&c->chrMmx2FilterPos);

  3577.     av_freep(&c->yuvTable);

  3578. 

  3579.     av_free(c);

  3580. }

  3581. 

  3582. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  3583.                                         int srcW, int srcH, enum PixelFormat srcFormat,

  3584.                                         int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  3585.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)

  3586. {

  3587.     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};

  3588. 

  3589.     if (!param)

  3590.         param = default_param;

  3591. 

  3592.     if (context) {

  3593.         if (context->srcW != srcW || context->srcH != srcH ||

  3594.             context->srcFormat != srcFormat ||

  3595.             context->dstW != dstW || context->dstH != dstH ||

  3596.             context->dstFormat != dstFormat || context->flags != flags ||

  3597.             context->param[0] != param[0] || context->param[1] != param[1])

  3598.         {

  3599.             sws_freeContext(context);

  3600.             context = NULL;

  3601.         }

  3602.     }

  3603.     if (!context) {

  3604.         return sws_getContext(srcW, srcH, srcFormat,

  3605.                               dstW, dstH, dstFormat, flags,

  3606.                               srcFilter, dstFilter, param);

  3607.     }

  3608.     return context;

  3609. }