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.
18791 Commits
32 Branches
541MB
Tree: dd35beb29b
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from 'dd35beb29b'
${ noResults }
FFmpeg/libswscale/swscale.c

3273 lines
110KB
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_RGB32       \

  112.         || (x)==PIX_FMT_RGB32_1     \

  113.         || (x)==PIX_FMT_BGR24       \

  114.         || (x)==PIX_FMT_BGR565      \

  115.         || (x)==PIX_FMT_BGR555      \

  116.         || (x)==PIX_FMT_BGR32       \

  117.         || (x)==PIX_FMT_BGR32_1     \

  118.         || (x)==PIX_FMT_RGB24       \

  119.         || (x)==PIX_FMT_RGB565      \

  120.         || (x)==PIX_FMT_RGB555      \

  121.         || (x)==PIX_FMT_GRAY8       \

  122.         || (x)==PIX_FMT_YUV410P     \

  123.         || (x)==PIX_FMT_YUV440P     \

  124.         || (x)==PIX_FMT_GRAY16BE    \

  125.         || (x)==PIX_FMT_GRAY16LE    \

  126.         || (x)==PIX_FMT_YUV444P     \

  127.         || (x)==PIX_FMT_YUV422P     \

  128.         || (x)==PIX_FMT_YUV411P     \

  129.         || (x)==PIX_FMT_PAL8        \

  130.         || (x)==PIX_FMT_BGR8        \

  131.         || (x)==PIX_FMT_RGB8        \

  132.         || (x)==PIX_FMT_BGR4_BYTE   \

  133.         || (x)==PIX_FMT_RGB4_BYTE   \

  134.         || (x)==PIX_FMT_YUV440P     \

  135.         || (x)==PIX_FMT_MONOWHITE   \

  136.         || (x)==PIX_FMT_MONOBLACK   \

  137.     )

  138. #define isSupportedOut(x)   (       \

  139.            (x)==PIX_FMT_YUV420P     \

  140.         || (x)==PIX_FMT_YUYV422     \

  141.         || (x)==PIX_FMT_UYVY422     \

  142.         || (x)==PIX_FMT_YUV444P     \

  143.         || (x)==PIX_FMT_YUV422P     \

  144.         || (x)==PIX_FMT_YUV411P     \

  145.         || isRGB(x)                 \

  146.         || isBGR(x)                 \

  147.         || (x)==PIX_FMT_NV12        \

  148.         || (x)==PIX_FMT_NV21        \

  149.         || (x)==PIX_FMT_GRAY16BE    \

  150.         || (x)==PIX_FMT_GRAY16LE    \

  151.         || (x)==PIX_FMT_GRAY8       \

  152.         || (x)==PIX_FMT_YUV410P     \

  153.         || (x)==PIX_FMT_YUV440P     \

  154.     )

  155. #define isPacked(x)         (       \

  156.            (x)==PIX_FMT_PAL8        \

  157.         || (x)==PIX_FMT_YUYV422     \

  158.         || (x)==PIX_FMT_UYVY422     \

  159.         || isRGB(x)                 \

  160.         || isBGR(x)                 \

  161.     )

  162. #define usePal(x)           (       \

  163.            (x)==PIX_FMT_PAL8        \

  164.         || (x)==PIX_FMT_BGR4_BYTE   \

  165.         || (x)==PIX_FMT_RGB4_BYTE   \

  166.         || (x)==PIX_FMT_BGR8        \

  167.         || (x)==PIX_FMT_RGB8        \

  168.     )

  169. 

  170. #define RGB2YUV_SHIFT 15

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

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

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

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

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

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

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

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

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

  180. 

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

  182. 

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

  184.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  185.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  186.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  187.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  188.     {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC

  189.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  190.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //SMPTE 170M

  191.     {0.701 , 0.087 , 0.212 , -0.384, 0.5  -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M

  192. };

  193. 

  194. /*

  195. NOTES

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

  197. 

  198. TODO

  199. more intelligent misalignment avoidance for the horizontal scaler

  200. write special vertical cubic upscale version

  201. optimize C code (YV12 / minmax)

  202. add support for packed pixel YUV input & output

  203. add support for Y8 output

  204. optimize BGR24 & BGR32

  205. add BGR4 output support

  206. write special BGR->BGR scaler

  207. */

  208. 

  209. #if ARCH_X86 && CONFIG_GPL

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

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

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

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

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

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

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

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

  218. 

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

  220.         0x0103010301030103LL,

  221.         0x0200020002000200LL,};

  222. 

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

  224.         0x0602060206020602LL,

  225.         0x0004000400040004LL,};

  226. 

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

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

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

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

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

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

  233. 

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

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

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

  237. 

  238. #ifdef FAST_BGR2YV12

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

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

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

  242. #else

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

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

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

  246. #endif /* FAST_BGR2YV12 */

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

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

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

  250. 

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

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

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

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

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

  256. 

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

  258.     {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},

  259.     {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},

  260. };

  261. 

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

  263. 

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

  265. 

  266. // clipping helper table for C implementations:

  267. static unsigned char clip_table[768];

  268. 

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

  270. 

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

  272. {  1,   3,   1,   3,   1,   3,   1,   3, },

  273. {  2,   0,   2,   0,   2,   0,   2,   0, },

  274. };

  275. 

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

  277. {  6,   2,   6,   2,   6,   2,   6,   2, },

  278. {  0,   4,   0,   4,   0,   4,   0,   4, },

  279. };

  280. 

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

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

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

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

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

  286. { 16,   8,  22,  14,  17,   9,  23,  15, },

  287. {  4,  28,   2,  26,   5,  29,   3,  27, },

  288. { 20,  12,  18,  10,  21,  13,  19,  11, },

  289. {  1,  25,   7,  31,   0,  24,   6,  30, },

  290. };

  291. 

  292. #if 0

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

  294. {  0,  48,  12,  60,   3,  51,  15,  63, },

  295. { 32,  16,  44,  28,  35,  19,  47,  31, },

  296. {  8,  56,   4,  52,  11,  59,   7,  55, },

  297. { 40,  24,  36,  20,  43,  27,  39,  23, },

  298. {  2,  50,  14,  62,   1,  49,  13,  61, },

  299. { 34,  18,  46,  30,  33,  17,  45,  29, },

  300. { 10,  58,   6,  54,   9,  57,   5,  53, },

  301. { 42,  26,  38,  22,  41,  25,  37,  21, },

  302. };

  303. #endif

  304. 

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

  306. {  0,  55,  14,  68,   3,  58,  17,  72, },

  307. { 37,  18,  50,  32,  40,  22,  54,  35, },

  308. {  9,  64,   5,  59,  13,  67,   8,  63, },

  309. { 46,  27,  41,  23,  49,  31,  44,  26, },

  310. {  2,  57,  16,  71,   1,  56,  15,  70, },

  311. { 39,  21,  52,  34,  38,  19,  51,  33, },

  312. { 11,  66,   7,  62,  10,  65,   6,  60, },

  313. { 48,  30,  43,  25,  47,  29,  42,  24, },

  314. };

  315. 

  316. #if 0

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

  318. { 68,  36,  92,  60,  66,  34,  90,  58, },

  319. { 20, 116,  12, 108,  18, 114,  10, 106, },

  320. { 84,  52,  76,  44,  82,  50,  74,  42, },

  321. {  0,  96,  24, 120,   6, 102,  30, 126, },

  322. { 64,  32,  88,  56,  70,  38,  94,  62, },

  323. { 16, 112,   8, 104,  22, 118,  14, 110, },

  324. { 80,  48,  72,  40,  86,  54,  78,  46, },

  325. {  4, 100,  28, 124,   2,  98,  26, 122, },

  326. };

  327. #endif

  328. 

  329. #if 1

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

  331. {117,  62, 158, 103, 113,  58, 155, 100, },

  332. { 34, 199,  21, 186,  31, 196,  17, 182, },

  333. {144,  89, 131,  76, 141,  86, 127,  72, },

  334. {  0, 165,  41, 206,  10, 175,  52, 217, },

  335. {110,  55, 151,  96, 120,  65, 162, 107, },

  336. { 28, 193,  14, 179,  38, 203,  24, 189, },

  337. {138,  83, 124,  69, 148,  93, 134,  79, },

  338. {  7, 172,  48, 213,   3, 168,  45, 210, },

  339. };

  340. #elif 1

  341. // tries to correct a gamma of 1.5

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

  343. {  0, 143,  18, 200,   2, 156,  25, 215, },

  344. { 78,  28, 125,  64,  89,  36, 138,  74, },

  345. { 10, 180,   3, 161,  16, 195,   8, 175, },

  346. {109,  51,  93,  38, 121,  60, 105,  47, },

  347. {  1, 152,  23, 210,   0, 147,  20, 205, },

  348. { 85,  33, 134,  71,  81,  30, 130,  67, },

  349. { 14, 190,   6, 171,  12, 185,   5, 166, },

  350. {117,  57, 101,  44, 113,  54,  97,  41, },

  351. };

  352. #elif 1

  353. // tries to correct a gamma of 2.0

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

  355. {  0, 124,   8, 193,   0, 140,  12, 213, },

  356. { 55,  14, 104,  42,  66,  19, 119,  52, },

  357. {  3, 168,   1, 145,   6, 187,   3, 162, },

  358. { 86,  31,  70,  21,  99,  39,  82,  28, },

  359. {  0, 134,  11, 206,   0, 129,   9, 200, },

  360. { 62,  17, 114,  48,  58,  16, 109,  45, },

  361. {  5, 181,   2, 157,   4, 175,   1, 151, },

  362. { 95,  36,  78,  26,  90,  34,  74,  24, },

  363. };

  364. #else

  365. // tries to correct a gamma of 2.5

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

  367. {  0, 107,   3, 187,   0, 125,   6, 212, },

  368. { 39,   7,  86,  28,  49,  11, 102,  36, },

  369. {  1, 158,   0, 131,   3, 180,   1, 151, },

  370. { 68,  19,  52,  12,  81,  25,  64,  17, },

  371. {  0, 119,   5, 203,   0, 113,   4, 195, },

  372. { 45,   9,  96,  33,  42,   8,  91,  30, },

  373. {  2, 172,   1, 144,   2, 165,   0, 137, },

  374. { 77,  23,  60,  15,  72,  21,  56,  14, },

  375. };

  376. #endif

  377. 

  378. const char *sws_format_name(enum PixelFormat format)

  379. {

  380.     switch (format) {

  381.         case PIX_FMT_YUV420P:

  382.             return "yuv420p";

  383.         case PIX_FMT_YUVA420P:

  384.             return "yuva420p";

  385.         case PIX_FMT_YUYV422:

  386.             return "yuyv422";

  387.         case PIX_FMT_RGB24:

  388.             return "rgb24";

  389.         case PIX_FMT_BGR24:

  390.             return "bgr24";

  391.         case PIX_FMT_YUV422P:

  392.             return "yuv422p";

  393.         case PIX_FMT_YUV444P:

  394.             return "yuv444p";

  395.         case PIX_FMT_RGB32:

  396.             return "rgb32";

  397.         case PIX_FMT_YUV410P:

  398.             return "yuv410p";

  399.         case PIX_FMT_YUV411P:

  400.             return "yuv411p";

  401.         case PIX_FMT_RGB565:

  402.             return "rgb565";

  403.         case PIX_FMT_RGB555:

  404.             return "rgb555";

  405.         case PIX_FMT_GRAY16BE:

  406.             return "gray16be";

  407.         case PIX_FMT_GRAY16LE:

  408.             return "gray16le";

  409.         case PIX_FMT_GRAY8:

  410.             return "gray8";

  411.         case PIX_FMT_MONOWHITE:

  412.             return "mono white";

  413.         case PIX_FMT_MONOBLACK:

  414.             return "mono black";

  415.         case PIX_FMT_PAL8:

  416.             return "Palette";

  417.         case PIX_FMT_YUVJ420P:

  418.             return "yuvj420p";

  419.         case PIX_FMT_YUVJ422P:

  420.             return "yuvj422p";

  421.         case PIX_FMT_YUVJ444P:

  422.             return "yuvj444p";

  423.         case PIX_FMT_XVMC_MPEG2_MC:

  424.             return "xvmc_mpeg2_mc";

  425.         case PIX_FMT_XVMC_MPEG2_IDCT:

  426.             return "xvmc_mpeg2_idct";

  427.         case PIX_FMT_UYVY422:

  428.             return "uyvy422";

  429.         case PIX_FMT_UYYVYY411:

  430.             return "uyyvyy411";

  431.         case PIX_FMT_RGB32_1:

  432.             return "rgb32x";

  433.         case PIX_FMT_BGR32_1:

  434.             return "bgr32x";

  435.         case PIX_FMT_BGR32:

  436.             return "bgr32";

  437.         case PIX_FMT_BGR565:

  438.             return "bgr565";

  439.         case PIX_FMT_BGR555:

  440.             return "bgr555";

  441.         case PIX_FMT_BGR8:

  442.             return "bgr8";

  443.         case PIX_FMT_BGR4:

  444.             return "bgr4";

  445.         case PIX_FMT_BGR4_BYTE:

  446.             return "bgr4 byte";

  447.         case PIX_FMT_RGB8:

  448.             return "rgb8";

  449.         case PIX_FMT_RGB4:

  450.             return "rgb4";

  451.         case PIX_FMT_RGB4_BYTE:

  452.             return "rgb4 byte";

  453.         case PIX_FMT_NV12:

  454.             return "nv12";

  455.         case PIX_FMT_NV21:

  456.             return "nv21";

  457.         case PIX_FMT_YUV440P:

  458.             return "yuv440p";

  459.         case PIX_FMT_VDPAU_H264:

  460.             return "vdpau_h264";

  461.         case PIX_FMT_VDPAU_MPEG1:

  462.             return "vdpau_mpeg1";

  463.         case PIX_FMT_VDPAU_MPEG2:

  464.             return "vdpau_mpeg2";

  465.         case PIX_FMT_VDPAU_WMV3:

  466.             return "vdpau_wmv3";

  467.         case PIX_FMT_VDPAU_VC1:

  468.             return "vdpau_vc1";

  469.         default:

  470.             return "Unknown format";

  471.     }

  472. }

  473. 

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

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

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

  477. {

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

  479.     int i;

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

  481.     {

  482.         int val=1<<18;

  483.         int j;

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

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

  486. 

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

  488.     }

  489. 

  490.     if (uDest)

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

  492.         {

  493.             int u=1<<18;

  494.             int v=1<<18;

  495.             int j;

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

  497.             {

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

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

  500.             }

  501. 

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

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

  504.         }

  505. }

  506. 

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

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

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

  510. {

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

  512.     int i;

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

  514.     {

  515.         int val=1<<18;

  516.         int j;

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

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

  519. 

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

  521.     }

  522. 

  523.     if (!uDest)

  524.         return;

  525. 

  526.     if (dstFormat == PIX_FMT_NV12)

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

  528.         {

  529.             int u=1<<18;

  530.             int v=1<<18;

  531.             int j;

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

  533.             {

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

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

  536.             }

  537. 

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

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

  540.         }

  541.     else

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

  543.         {

  544.             int u=1<<18;

  545.             int v=1<<18;

  546.             int j;

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

  548.             {

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

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

  551.             }

  552. 

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

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

  555.         }

  556. }

  557. 

  558. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type) \

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

  560.         int j;\

  561.         int Y1 = 1<<18;\

  562.         int Y2 = 1<<18;\

  563.         int U  = 1<<18;\

  564.         int V  = 1<<18;\

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

  566.         const int i2= 2*i;\

  567.         \

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

  569.         {\

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

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

  572.         }\

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

  574.         {\

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

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

  577.         }\

  578.         Y1>>=19;\

  579.         Y2>>=19;\

  580.         U >>=19;\

  581.         V >>=19;\

  582. 

  583. #define YSCALE_YUV_2_PACKEDX_C(type) \

  584.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type)\

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

  586.         {\

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

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

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

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

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

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

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

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

  595.         }

  596. 

  597. #define YSCALE_YUV_2_PACKEDX_FULL_C \

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

  599.         int j;\

  600.         int Y = 0;\

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

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

  603.         int R,G,B;\

  604.         \

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

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

  607.         }\

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

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

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

  611.         }\

  612.         Y >>=10;\

  613.         U >>=10;\

  614.         V >>=10;\

  615. 

  616. #define YSCALE_YUV_2_RGBX_FULL_C(rnd) \

  617.     YSCALE_YUV_2_PACKEDX_FULL_C\

  618.         Y-= c->yuv2rgb_y_offset;\

  619.         Y*= c->yuv2rgb_y_coeff;\

  620.         Y+= rnd;\

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

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

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

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

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

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

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

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

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

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

  631.         }\

  632. 

  633. 

  634. #define YSCALE_YUV_2_GRAY16_C \

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

  636.         int j;\

  637.         int Y1 = 1<<18;\

  638.         int Y2 = 1<<18;\

  639.         int U  = 1<<18;\

  640.         int V  = 1<<18;\

  641.         \

  642.         const int i2= 2*i;\

  643.         \

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

  645.         {\

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

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

  648.         }\

  649.         Y1>>=11;\

  650.         Y2>>=11;\

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

  652.         {\

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

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

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

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

  657.         }

  658. 

  659. #define YSCALE_YUV_2_RGBX_C(type) \

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

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

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

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

  664. 

  665. #define YSCALE_YUV_2_PACKED2_C   \

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

  667.         const int i2= 2*i;       \

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

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

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

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

  672. 

  673. #define YSCALE_YUV_2_GRAY16_2_C   \

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

  675.         const int i2= 2*i;       \

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

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

  678. 

  679. #define YSCALE_YUV_2_RGB2_C(type) \

  680.     YSCALE_YUV_2_PACKED2_C\

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

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

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

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

  685. 

  686. #define YSCALE_YUV_2_PACKED1_C \

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

  688.         const int i2= 2*i;\

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

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

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

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

  693. 

  694. #define YSCALE_YUV_2_GRAY16_1_C \

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

  696.         const int i2= 2*i;\

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

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

  699. 

  700. #define YSCALE_YUV_2_RGB1_C(type) \

  701.     YSCALE_YUV_2_PACKED1_C\

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

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

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

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

  706. 

  707. #define YSCALE_YUV_2_PACKED1B_C \

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

  709.         const int i2= 2*i;\

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

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

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

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

  714. 

  715. #define YSCALE_YUV_2_RGB1B_C(type) \

  716.     YSCALE_YUV_2_PACKED1B_C\

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

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

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

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

  721. 

  722. #define YSCALE_YUV_2_MONO2_C \

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

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

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

  726.         int acc;\

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

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

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

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

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

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

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

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

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

  736.         dest++;\

  737.     }\

  738. 

  739. 

  740. #define YSCALE_YUV_2_MONOX_C \

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

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

  743.     int acc=0;\

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

  745.         int j;\

  746.         int Y1=1<<18;\

  747.         int Y2=1<<18;\

  748. \

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

  750.         {\

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

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

  753.         }\

  754.         Y1>>=19;\

  755.         Y2>>=19;\

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

  757.         {\

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

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

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

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

  762.         }\

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

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

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

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

  767.             dest++;\

  768.         }\

  769.     }

  770. 

  771. 

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

  773.     switch(c->dstFormat)\

  774.     {\

  775.     case PIX_FMT_RGB32:\

  776.     case PIX_FMT_BGR32:\

  777.     case PIX_FMT_RGB32_1:\

  778.     case PIX_FMT_BGR32_1:\

  779.         func(uint32_t)\

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

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

  782.         }                \

  783.         break;\

  784.     case PIX_FMT_RGB24:\

  785.         func(uint8_t)\

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

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

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

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

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

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

  792.             dest+=6;\

  793.         }\

  794.         break;\

  795.     case PIX_FMT_BGR24:\

  796.         func(uint8_t)\

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

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

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

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

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

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

  803.             dest+=6;\

  804.         }\

  805.         break;\

  806.     case PIX_FMT_RGB565:\

  807.     case PIX_FMT_BGR565:\

  808.         {\

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

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

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

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

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

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

  815.             func(uint16_t)\

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

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

  818.             }\

  819.         }\

  820.         break;\

  821.     case PIX_FMT_RGB555:\

  822.     case PIX_FMT_BGR555:\

  823.         {\

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

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

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

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

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

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

  830.             func(uint16_t)\

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

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

  833.             }\

  834.         }\

  835.         break;\

  836.     case PIX_FMT_RGB8:\

  837.     case PIX_FMT_BGR8:\

  838.         {\

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

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

  841.             func(uint8_t)\

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

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

  844.             }\

  845.         }\

  846.         break;\

  847.     case PIX_FMT_RGB4:\

  848.     case PIX_FMT_BGR4:\

  849.         {\

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

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

  852.             func(uint8_t)\

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

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

  855.             }\

  856.         }\

  857.         break;\

  858.     case PIX_FMT_RGB4_BYTE:\

  859.     case PIX_FMT_BGR4_BYTE:\

  860.         {\

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

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

  863.             func(uint8_t)\

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

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

  866.             }\

  867.         }\

  868.         break;\

  869.     case PIX_FMT_MONOBLACK:\

  870.     case PIX_FMT_MONOWHITE:\

  871.         {\

  872.             func_monoblack\

  873.         }\

  874.         break;\

  875.     case PIX_FMT_YUYV422:\

  876.         func2\

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

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

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

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

  881.         }                \

  882.         break;\

  883.     case PIX_FMT_UYVY422:\

  884.         func2\

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

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

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

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

  889.         }                \

  890.         break;\

  891.     case PIX_FMT_GRAY16BE:\

  892.         func_g16\

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

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

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

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

  897.         }                \

  898.         break;\

  899.     case PIX_FMT_GRAY16LE:\

  900.         func_g16\

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

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

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

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

  905.         }                \

  906.         break;\

  907.     }\

  908. 

  909. 

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

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

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

  913. {

  914.     int i;

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

  916. }

  917. 

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

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

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

  921. {

  922.     int i;

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

  924.     int aidx= 3;

  925. 

  926.     switch(c->dstFormat){

  927.     case PIX_FMT_ARGB:

  928.         dest++;

  929.         aidx= 0;

  930.     case PIX_FMT_RGB24:

  931.         aidx--;

  932.     case PIX_FMT_RGBA:

  933.         YSCALE_YUV_2_RGBX_FULL_C(1<<21)

  934.             dest[aidx]= 255;

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

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

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

  938.             dest+= step;

  939.         }

  940.         break;

  941.     case PIX_FMT_ABGR:

  942.         dest++;

  943.         aidx= 0;

  944.     case PIX_FMT_BGR24:

  945.         aidx--;

  946.     case PIX_FMT_BGRA:

  947.         YSCALE_YUV_2_RGBX_FULL_C(1<<21)

  948.             dest[aidx]= 255;

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

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

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

  952.             dest+= step;

  953.         }

  954.         break;

  955.     default:

  956.         assert(0);

  957.     }

  958. }

  959. 

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

  961.     int i;

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

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

  964.         memset(ptr, val, width);

  965.         ptr += stride;

  966.     }

  967. }

  968. 

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

  970. //Plain C versions

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

  972. #define COMPILE_C

  973. #endif

  974. 

  975. #if ARCH_PPC

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

  977. #undef COMPILE_C

  978. #define COMPILE_ALTIVEC

  979. #endif

  980. #endif //ARCH_PPC

  981. 

  982. #if ARCH_X86

  983. 

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

  985. #define COMPILE_MMX

  986. #endif

  987. 

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

  989. #define COMPILE_MMX2

  990. #endif

  991. 

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

  993. #define COMPILE_3DNOW

  994. #endif

  995. #endif //ARCH_X86

  996. 

  997. #undef HAVE_MMX

  998. #undef HAVE_MMX2

  999. #undef HAVE_AMD3DNOW

  1000. #undef HAVE_ALTIVEC

  1001. #define HAVE_MMX 0

  1002. #define HAVE_MMX2 0

  1003. #define HAVE_AMD3DNOW 0

  1004. #define HAVE_ALTIVEC 0

  1005. 

  1006. #ifdef COMPILE_C

  1007. #define RENAME(a) a ## _C

  1008. #include "swscale_template.c"

  1009. #endif

  1010. 

  1011. #ifdef COMPILE_ALTIVEC

  1012. #undef RENAME

  1013. #undef HAVE_ALTIVEC

  1014. #define HAVE_ALTIVEC 1

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

  1016. #include "swscale_template.c"

  1017. #endif

  1018. 

  1019. #if ARCH_X86

  1020. 

  1021. //x86 versions

  1022. /*

  1023. #undef RENAME

  1024. #undef HAVE_MMX

  1025. #undef HAVE_MMX2

  1026. #undef HAVE_AMD3DNOW

  1027. #define ARCH_X86

  1028. #define RENAME(a) a ## _X86

  1029. #include "swscale_template.c"

  1030. */

  1031. //MMX versions

  1032. #ifdef COMPILE_MMX

  1033. #undef RENAME

  1034. #undef HAVE_MMX

  1035. #undef HAVE_MMX2

  1036. #undef HAVE_AMD3DNOW

  1037. #define HAVE_MMX 1

  1038. #define HAVE_MMX2 0

  1039. #define HAVE_AMD3DNOW 0

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

  1041. #include "swscale_template.c"

  1042. #endif

  1043. 

  1044. //MMX2 versions

  1045. #ifdef COMPILE_MMX2

  1046. #undef RENAME

  1047. #undef HAVE_MMX

  1048. #undef HAVE_MMX2

  1049. #undef HAVE_AMD3DNOW

  1050. #define HAVE_MMX 1

  1051. #define HAVE_MMX2 1

  1052. #define HAVE_AMD3DNOW 0

  1053. #define RENAME(a) a ## _MMX2

  1054. #include "swscale_template.c"

  1055. #endif

  1056. 

  1057. //3DNOW versions

  1058. #ifdef COMPILE_3DNOW

  1059. #undef RENAME

  1060. #undef HAVE_MMX

  1061. #undef HAVE_MMX2

  1062. #undef HAVE_AMD3DNOW

  1063. #define HAVE_MMX 1

  1064. #define HAVE_MMX2 0

  1065. #define HAVE_AMD3DNOW 1

  1066. #define RENAME(a) a ## _3DNow

  1067. #include "swscale_template.c"

  1068. #endif

  1069. 

  1070. #endif //ARCH_X86

  1071. 

  1072. // minor note: the HAVE_xyz are messed up after this line so don't use them

  1073. 

  1074. static double getSplineCoeff(double a, double b, double c, double d, double dist)

  1075. {

  1076. //    printf("%f %f %f %f %f\n", a,b,c,d,dist);

  1077.     if (dist<=1.0)      return ((d*dist + c)*dist + b)*dist +a;

  1078.     else                return getSplineCoeff(        0.0,

  1079.                                              b+ 2.0*c + 3.0*d,

  1080.                                                     c + 3.0*d,

  1081.                                             -b- 3.0*c - 6.0*d,

  1082.                                             dist-1.0);

  1083. }

  1084. 

  1085. static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,

  1086.                              int srcW, int dstW, int filterAlign, int one, int flags,

  1087.                              SwsVector *srcFilter, SwsVector *dstFilter, double param[2])

  1088. {

  1089.     int i;

  1090.     int filterSize;

  1091.     int filter2Size;

  1092.     int minFilterSize;

  1093.     int64_t *filter=NULL;

  1094.     int64_t *filter2=NULL;

  1095.     const int64_t fone= 1LL<<54;

  1096.     int ret= -1;

  1097. #if ARCH_X86

  1098.     if (flags & SWS_CPU_CAPS_MMX)

  1099.         __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)

  1100. #endif

  1101. 

  1102.     // NOTE: the +1 is for the MMX scaler which reads over the end

  1103.     *filterPos = av_malloc((dstW+1)*sizeof(int16_t));

  1104. 

  1105.     if (FFABS(xInc - 0x10000) <10) // unscaled

  1106.     {

  1107.         int i;

  1108.         filterSize= 1;

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

  1110. 

  1111.         for (i=0; i<dstW; i++)

  1112.         {

  1113.             filter[i*filterSize]= fone;

  1114.             (*filterPos)[i]=i;

  1115.         }

  1116. 

  1117.     }

  1118.     else if (flags&SWS_POINT) // lame looking point sampling mode

  1119.     {

  1120.         int i;

  1121.         int xDstInSrc;

  1122.         filterSize= 1;

  1123.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1124. 

  1125.         xDstInSrc= xInc/2 - 0x8000;

  1126.         for (i=0; i<dstW; i++)

  1127.         {

  1128.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1129. 

  1130.             (*filterPos)[i]= xx;

  1131.             filter[i]= fone;

  1132.             xDstInSrc+= xInc;

  1133.         }

  1134.     }

  1135.     else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale

  1136.     {

  1137.         int i;

  1138.         int xDstInSrc;

  1139.         if      (flags&SWS_BICUBIC) filterSize= 4;

  1140.         else if (flags&SWS_X      ) filterSize= 4;

  1141.         else                        filterSize= 2; // SWS_BILINEAR / SWS_AREA

  1142.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1143. 

  1144.         xDstInSrc= xInc/2 - 0x8000;

  1145.         for (i=0; i<dstW; i++)

  1146.         {

  1147.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1148.             int j;

  1149. 

  1150.             (*filterPos)[i]= xx;

  1151.                 //bilinear upscale / linear interpolate / area averaging

  1152.                 for (j=0; j<filterSize; j++)

  1153.                 {

  1154.                     int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);

  1155.                     if (coeff<0) coeff=0;

  1156.                     filter[i*filterSize + j]= coeff;

  1157.                     xx++;

  1158.                 }

  1159.             xDstInSrc+= xInc;

  1160.         }

  1161.     }

  1162.     else

  1163.     {

  1164.         int xDstInSrc;

  1165.         int sizeFactor;

  1166. 

  1167.         if      (flags&SWS_BICUBIC)      sizeFactor=  4;

  1168.         else if (flags&SWS_X)            sizeFactor=  8;

  1169.         else if (flags&SWS_AREA)         sizeFactor=  1; //downscale only, for upscale it is bilinear

  1170.         else if (flags&SWS_GAUSS)        sizeFactor=  8;   // infinite ;)

  1171.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;

  1172.         else if (flags&SWS_SINC)         sizeFactor= 20; // infinite ;)

  1173.         else if (flags&SWS_SPLINE)       sizeFactor= 20;  // infinite ;)

  1174.         else if (flags&SWS_BILINEAR)     sizeFactor=  2;

  1175.         else {

  1176.             sizeFactor= 0; //GCC warning killer

  1177.             assert(0);

  1178.         }

  1179. 

  1180.         if (xInc <= 1<<16)      filterSize= 1 + sizeFactor; // upscale

  1181.         else                    filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;

  1182. 

  1183.         if (filterSize > srcW-2) filterSize=srcW-2;

  1184. 

  1185.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1186. 

  1187.         xDstInSrc= xInc - 0x10000;

  1188.         for (i=0; i<dstW; i++)

  1189.         {

  1190.             int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);

  1191.             int j;

  1192.             (*filterPos)[i]= xx;

  1193.             for (j=0; j<filterSize; j++)

  1194.             {

  1195.                 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;

  1196.                 double floatd;

  1197.                 int64_t coeff;

  1198. 

  1199.                 if (xInc > 1<<16)

  1200.                     d= d*dstW/srcW;

  1201.                 floatd= d * (1.0/(1<<30));

  1202. 

  1203.                 if (flags & SWS_BICUBIC)

  1204.                 {

  1205.                     int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] :   0) * (1<<24);

  1206.                     int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);

  1207.                     int64_t dd = ( d*d)>>30;

  1208.                     int64_t ddd= (dd*d)>>30;

  1209. 

  1210.                     if      (d < 1LL<<30)

  1211.                         coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);

  1212.                     else if (d < 1LL<<31)

  1213.                         coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);

  1214.                     else

  1215.                         coeff=0.0;

  1216.                     coeff *= fone>>(30+24);

  1217.                 }

  1218. /*                else if (flags & SWS_X)

  1219.                 {

  1220.                     double p= param ? param*0.01 : 0.3;

  1221.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1222.                     coeff*= pow(2.0, - p*d*d);

  1223.                 }*/

  1224.                 else if (flags & SWS_X)

  1225.                 {

  1226.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1227.                     double c;

  1228. 

  1229.                     if (floatd<1.0)

  1230.                         c = cos(floatd*PI);

  1231.                     else

  1232.                         c=-1.0;

  1233.                     if (c<0.0)      c= -pow(-c, A);

  1234.                     else            c=  pow( c, A);

  1235.                     coeff= (c*0.5 + 0.5)*fone;

  1236.                 }

  1237.                 else if (flags & SWS_AREA)

  1238.                 {

  1239.                     int64_t d2= d - (1<<29);

  1240.                     if      (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));

  1241.                     else if (d2*xInc <  (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));

  1242.                     else coeff=0.0;

  1243.                     coeff *= fone>>(30+16);

  1244.                 }

  1245.                 else if (flags & SWS_GAUSS)

  1246.                 {

  1247.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1248.                     coeff = (pow(2.0, - p*floatd*floatd))*fone;

  1249.                 }

  1250.                 else if (flags & SWS_SINC)

  1251.                 {

  1252.                     coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;

  1253.                 }

  1254.                 else if (flags & SWS_LANCZOS)

  1255.                 {

  1256.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1257.                     coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;

  1258.                     if (floatd>p) coeff=0;

  1259.                 }

  1260.                 else if (flags & SWS_BILINEAR)

  1261.                 {

  1262.                     coeff= (1<<30) - d;

  1263.                     if (coeff<0) coeff=0;

  1264.                     coeff *= fone >> 30;

  1265.                 }

  1266.                 else if (flags & SWS_SPLINE)

  1267.                 {

  1268.                     double p=-2.196152422706632;

  1269.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;

  1270.                 }

  1271.                 else {

  1272.                     coeff= 0.0; //GCC warning killer

  1273.                     assert(0);

  1274.                 }

  1275. 

  1276.                 filter[i*filterSize + j]= coeff;

  1277.                 xx++;

  1278.             }

  1279.             xDstInSrc+= 2*xInc;

  1280.         }

  1281.     }

  1282. 

  1283.     /* apply src & dst Filter to filter -> filter2

  1284.        av_free(filter);

  1285.     */

  1286.     assert(filterSize>0);

  1287.     filter2Size= filterSize;

  1288.     if (srcFilter) filter2Size+= srcFilter->length - 1;

  1289.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1290.     assert(filter2Size>0);

  1291.     filter2= av_mallocz(filter2Size*dstW*sizeof(*filter2));

  1292. 

  1293.     for (i=0; i<dstW; i++)

  1294.     {

  1295.         int j, k;

  1296. 

  1297.         if(srcFilter){

  1298.             for (k=0; k<srcFilter->length; k++){

  1299.                 for (j=0; j<filterSize; j++)

  1300.                     filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];

  1301.             }

  1302.         }else{

  1303.             for (j=0; j<filterSize; j++)

  1304.                 filter2[i*filter2Size + j]= filter[i*filterSize + j];

  1305.         }

  1306.         //FIXME dstFilter

  1307. 

  1308.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1309.     }

  1310.     av_freep(&filter);

  1311. 

  1312.     /* try to reduce the filter-size (step1 find size and shift left) */

  1313.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1314.     minFilterSize= 0;

  1315.     for (i=dstW-1; i>=0; i--)

  1316.     {

  1317.         int min= filter2Size;

  1318.         int j;

  1319.         int64_t cutOff=0.0;

  1320. 

  1321.         /* get rid off near zero elements on the left by shifting left */

  1322.         for (j=0; j<filter2Size; j++)

  1323.         {

  1324.             int k;

  1325.             cutOff += FFABS(filter2[i*filter2Size]);

  1326. 

  1327.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1328. 

  1329.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1330.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1331. 

  1332.             // move filter coefficients left

  1333.             for (k=1; k<filter2Size; k++)

  1334.                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1335.             filter2[i*filter2Size + k - 1]= 0;

  1336.             (*filterPos)[i]++;

  1337.         }

  1338. 

  1339.         cutOff=0;

  1340.         /* count near zeros on the right */

  1341.         for (j=filter2Size-1; j>0; j--)

  1342.         {

  1343.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1344. 

  1345.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1346.             min--;

  1347.         }

  1348. 

  1349.         if (min>minFilterSize) minFilterSize= min;

  1350.     }

  1351. 

  1352.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1353.         // we can handle the special case 4,

  1354.         // so we don't want to go to the full 8

  1355.         if (minFilterSize < 5)

  1356.             filterAlign = 4;

  1357. 

  1358.         // We really don't want to waste our time

  1359.         // doing useless computation, so fall back on

  1360.         // the scalar C code for very small filters.

  1361.         // Vectorizing is worth it only if you have a

  1362.         // decent-sized vector.

  1363.         if (minFilterSize < 3)

  1364.             filterAlign = 1;

  1365.     }

  1366. 

  1367.     if (flags & SWS_CPU_CAPS_MMX) {

  1368.         // special case for unscaled vertical filtering

  1369.         if (minFilterSize == 1 && filterAlign == 2)

  1370.             filterAlign= 1;

  1371.     }

  1372. 

  1373.     assert(minFilterSize > 0);

  1374.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1375.     assert(filterSize > 0);

  1376.     filter= av_malloc(filterSize*dstW*sizeof(*filter));

  1377.     if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)

  1378.         goto error;

  1379.     *outFilterSize= filterSize;

  1380. 

  1381.     if (flags&SWS_PRINT_INFO)

  1382.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1383.     /* try to reduce the filter-size (step2 reduce it) */

  1384.     for (i=0; i<dstW; i++)

  1385.     {

  1386.         int j;

  1387. 

  1388.         for (j=0; j<filterSize; j++)

  1389.         {

  1390.             if (j>=filter2Size) filter[i*filterSize + j]= 0;

  1391.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1392.             if((flags & SWS_BITEXACT) && j>=minFilterSize)

  1393.                 filter[i*filterSize + j]= 0;

  1394.         }

  1395.     }

  1396. 

  1397. 

  1398.     //FIXME try to align filterPos if possible

  1399. 

  1400.     //fix borders

  1401.     for (i=0; i<dstW; i++)

  1402.     {

  1403.         int j;

  1404.         if ((*filterPos)[i] < 0)

  1405.         {

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

  1407.             for (j=1; j<filterSize; j++)

  1408.             {

  1409.                 int left= FFMAX(j + (*filterPos)[i], 0);

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

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

  1412.             }

  1413.             (*filterPos)[i]= 0;

  1414.         }

  1415. 

  1416.         if ((*filterPos)[i] + filterSize > srcW)

  1417.         {

  1418.             int shift= (*filterPos)[i] + filterSize - srcW;

  1419.             // move filter coefficients right to compensate for filterPos

  1420.             for (j=filterSize-2; j>=0; j--)

  1421.             {

  1422.                 int right= FFMIN(j + shift, filterSize-1);

  1423.                 filter[i*filterSize +right] += filter[i*filterSize +j];

  1424.                 filter[i*filterSize +j]=0;

  1425.             }

  1426.             (*filterPos)[i]= srcW - filterSize;

  1427.         }

  1428.     }

  1429. 

  1430.     // Note the +1 is for the MMX scaler which reads over the end

  1431.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1432.     *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));

  1433. 

  1434.     /* normalize & store in outFilter */

  1435.     for (i=0; i<dstW; i++)

  1436.     {

  1437.         int j;

  1438.         int64_t error=0;

  1439.         int64_t sum=0;

  1440. 

  1441.         for (j=0; j<filterSize; j++)

  1442.         {

  1443.             sum+= filter[i*filterSize + j];

  1444.         }

  1445.         sum= (sum + one/2)/ one;

  1446.         for (j=0; j<*outFilterSize; j++)

  1447.         {

  1448.             int64_t v= filter[i*filterSize + j] + error;

  1449.             int intV= ROUNDED_DIV(v, sum);

  1450.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1451.             error= v - intV*sum;

  1452.         }

  1453.     }

  1454. 

  1455.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1456.     for (i=0; i<*outFilterSize; i++)

  1457.     {

  1458.         int j= dstW*(*outFilterSize);

  1459.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1460.     }

  1461. 

  1462.     ret=0;

  1463. error:

  1464.     av_free(filter);

  1465.     av_free(filter2);

  1466.     return ret;

  1467. }

  1468. 

  1469. #ifdef COMPILE_MMX2

  1470. static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1471. {

  1472.     uint8_t *fragmentA;

  1473.     x86_reg imm8OfPShufW1A;

  1474.     x86_reg imm8OfPShufW2A;

  1475.     x86_reg fragmentLengthA;

  1476.     uint8_t *fragmentB;

  1477.     x86_reg imm8OfPShufW1B;

  1478.     x86_reg imm8OfPShufW2B;

  1479.     x86_reg fragmentLengthB;

  1480.     int fragmentPos;

  1481. 

  1482.     int xpos, i;

  1483. 

  1484.     // create an optimized horizontal scaling routine

  1485. 

  1486.     //code fragment

  1487. 

  1488.     __asm__ volatile(

  1489.         "jmp                         9f                 \n\t"

  1490.     // Begin

  1491.         "0:                                             \n\t"

  1492.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1493.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1494.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1495.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1496.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1497.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1498.         "1:                                             \n\t"

  1499.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1500.         "2:                                             \n\t"

  1501.         "psubw                    %%mm1, %%mm0          \n\t"

  1502.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1503.         "pmullw                   %%mm3, %%mm0          \n\t"

  1504.         "psllw                       $7, %%mm1          \n\t"

  1505.         "paddw                    %%mm1, %%mm0          \n\t"

  1506. 

  1507.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1508. 

  1509.         "add                         $8, %%"REG_a"      \n\t"

  1510.     // End

  1511.         "9:                                             \n\t"

  1512. //        "int $3                                         \n\t"

  1513.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1514.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1515.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1516.         "dec                         %1                 \n\t"

  1517.         "dec                         %2                 \n\t"

  1518.         "sub                         %0, %1             \n\t"

  1519.         "sub                         %0, %2             \n\t"

  1520.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1521.         "sub                         %0, %3             \n\t"

  1522. 

  1523. 

  1524.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1525.         "=r" (fragmentLengthA)

  1526.     );

  1527. 

  1528.     __asm__ volatile(

  1529.         "jmp                         9f                 \n\t"

  1530.     // Begin

  1531.         "0:                                             \n\t"

  1532.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1533.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1534.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1535.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1536.         "1:                                             \n\t"

  1537.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1538.         "2:                                             \n\t"

  1539.         "psubw                    %%mm1, %%mm0          \n\t"

  1540.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1541.         "pmullw                   %%mm3, %%mm0          \n\t"

  1542.         "psllw                       $7, %%mm1          \n\t"

  1543.         "paddw                    %%mm1, %%mm0          \n\t"

  1544. 

  1545.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1546. 

  1547.         "add                         $8, %%"REG_a"      \n\t"

  1548.     // End

  1549.         "9:                                             \n\t"

  1550. //        "int                       $3                   \n\t"

  1551.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1552.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1553.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1554.         "dec                         %1                 \n\t"

  1555.         "dec                         %2                 \n\t"

  1556.         "sub                         %0, %1             \n\t"

  1557.         "sub                         %0, %2             \n\t"

  1558.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1559.         "sub                         %0, %3             \n\t"

  1560. 

  1561. 

  1562.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1563.         "=r" (fragmentLengthB)

  1564.     );

  1565. 

  1566.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1567.     fragmentPos=0;

  1568. 

  1569.     for (i=0; i<dstW/numSplits; i++)

  1570.     {

  1571.         int xx=xpos>>16;

  1572. 

  1573.         if ((i&3) == 0)

  1574.         {

  1575.             int a=0;

  1576.             int b=((xpos+xInc)>>16) - xx;

  1577.             int c=((xpos+xInc*2)>>16) - xx;

  1578.             int d=((xpos+xInc*3)>>16) - xx;

  1579. 

  1580.             filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;

  1581.             filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1582.             filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1583.             filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1584.             filterPos[i/2]= xx;

  1585. 

  1586.             if (d+1<4)

  1587.             {

  1588.                 int maxShift= 3-(d+1);

  1589.                 int shift=0;

  1590. 

  1591.                 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);

  1592. 

  1593.                 funnyCode[fragmentPos + imm8OfPShufW1B]=

  1594.                     (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);

  1595.                 funnyCode[fragmentPos + imm8OfPShufW2B]=

  1596.                     a | (b<<2) | (c<<4) | (d<<6);

  1597. 

  1598.                 if (i+3>=dstW) shift=maxShift; //avoid overread

  1599.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1600. 

  1601.                 if (shift && i>=shift)

  1602.                 {

  1603.                     funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;

  1604.                     funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;

  1605.                     filterPos[i/2]-=shift;

  1606.                 }

  1607. 

  1608.                 fragmentPos+= fragmentLengthB;

  1609.             }

  1610.             else

  1611.             {

  1612.                 int maxShift= 3-d;

  1613.                 int shift=0;

  1614. 

  1615.                 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);

  1616. 

  1617.                 funnyCode[fragmentPos + imm8OfPShufW1A]=

  1618.                 funnyCode[fragmentPos + imm8OfPShufW2A]=

  1619.                     a | (b<<2) | (c<<4) | (d<<6);

  1620. 

  1621.                 if (i+4>=dstW) shift=maxShift; //avoid overread

  1622.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align

  1623. 

  1624.                 if (shift && i>=shift)

  1625.                 {

  1626.                     funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;

  1627.                     funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;

  1628.                     filterPos[i/2]-=shift;

  1629.                 }

  1630. 

  1631.                 fragmentPos+= fragmentLengthA;

  1632.             }

  1633. 

  1634.             funnyCode[fragmentPos]= RET;

  1635.         }

  1636.         xpos+=xInc;

  1637.     }

  1638.     filterPos[((i/2)+1)&(~1)]= xpos>>16; // needed to jump to the next part

  1639. }

  1640. #endif /* COMPILE_MMX2 */

  1641. 

  1642. static void globalInit(void){

  1643.     // generating tables:

  1644.     int i;

  1645.     for (i=0; i<768; i++){

  1646.         int c= av_clip_uint8(i-256);

  1647.         clip_table[i]=c;

  1648.     }

  1649. }

  1650. 

  1651. static SwsFunc getSwsFunc(int flags){

  1652. 

  1653. #if defined(RUNTIME_CPUDETECT) && CONFIG_GPL

  1654. #if ARCH_X86

  1655.     // ordered per speed fastest first

  1656.     if (flags & SWS_CPU_CAPS_MMX2)

  1657.         return swScale_MMX2;

  1658.     else if (flags & SWS_CPU_CAPS_3DNOW)

  1659.         return swScale_3DNow;

  1660.     else if (flags & SWS_CPU_CAPS_MMX)

  1661.         return swScale_MMX;

  1662.     else

  1663.         return swScale_C;

  1664. 

  1665. #else

  1666. #if ARCH_PPC

  1667.     if (flags & SWS_CPU_CAPS_ALTIVEC)

  1668.         return swScale_altivec;

  1669.     else

  1670.         return swScale_C;

  1671. #endif

  1672.     return swScale_C;

  1673. #endif /* ARCH_X86 */

  1674. #else //RUNTIME_CPUDETECT

  1675. #if   HAVE_MMX2

  1676.     return swScale_MMX2;

  1677. #elif HAVE_AMD3DNOW

  1678.     return swScale_3DNow;

  1679. #elif HAVE_MMX

  1680.     return swScale_MMX;

  1681. #elif HAVE_ALTIVEC

  1682.     return swScale_altivec;

  1683. #else

  1684.     return swScale_C;

  1685. #endif

  1686. #endif //!RUNTIME_CPUDETECT

  1687. }

  1688. 

  1689. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1690.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1691.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1692.     /* Copy Y plane */

  1693.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1694.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1695.     else

  1696.     {

  1697.         int i;

  1698.         uint8_t *srcPtr= src[0];

  1699.         uint8_t *dstPtr= dst;

  1700.         for (i=0; i<srcSliceH; i++)

  1701.         {

  1702.             memcpy(dstPtr, srcPtr, c->srcW);

  1703.             srcPtr+= srcStride[0];

  1704.             dstPtr+= dstStride[0];

  1705.         }

  1706.     }

  1707.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1708.     if (c->dstFormat == PIX_FMT_NV12)

  1709.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  1710.     else

  1711.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  1712. 

  1713.     return srcSliceH;

  1714. }

  1715. 

  1716. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1717.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1718.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1719. 

  1720.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1721. 

  1722.     return srcSliceH;

  1723. }

  1724. 

  1725. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1726.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1727.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1728. 

  1729.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1730. 

  1731.     return srcSliceH;

  1732. }

  1733. 

  1734. static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1735.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1736.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1737. 

  1738.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1739. 

  1740.     return srcSliceH;

  1741. }

  1742. 

  1743. static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1744.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1745.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1746. 

  1747.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1748. 

  1749.     return srcSliceH;

  1750. }

  1751. 

  1752. static int YUYV2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1753.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1754.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1755.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  1756.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  1757. 

  1758.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1759. 

  1760.     return srcSliceH;

  1761. }

  1762. 

  1763. static int YUYV2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1764.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1765.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1766.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  1767.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  1768. 

  1769.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1770. 

  1771.     return srcSliceH;

  1772. }

  1773. 

  1774. static int UYVY2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1775.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1776.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1777.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  1778.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  1779. 

  1780.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1781. 

  1782.     return srcSliceH;

  1783. }

  1784. 

  1785. static int UYVY2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1786.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1787.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1788.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  1789.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  1790. 

  1791.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1792. 

  1793.     return srcSliceH;

  1794. }

  1795. 

  1796. static int pal2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1797.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  1798.     const enum PixelFormat srcFormat= c->srcFormat;

  1799.     const enum PixelFormat dstFormat= c->dstFormat;

  1800.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  1801.                  const uint8_t *palette)=NULL;

  1802.     int i;

  1803.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1804.     uint8_t *srcPtr= src[0];

  1805. 

  1806.     if (!usePal(srcFormat))

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

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

  1809. 

  1810.     switch(dstFormat){

  1811.     case PIX_FMT_RGB32  : conv = palette8topacked32; break;

  1812.     case PIX_FMT_BGR32  : conv = palette8topacked32; break;

  1813.     case PIX_FMT_BGR32_1: conv = palette8topacked32; break;

  1814.     case PIX_FMT_RGB32_1: conv = palette8topacked32; break;

  1815.     case PIX_FMT_RGB24  : conv = palette8topacked24; break;

  1816.     case PIX_FMT_BGR24  : conv = palette8topacked24; break;

  1817.     default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1818.                     sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1819.     }

  1820. 

  1821. 

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

  1823.         conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  1824.         srcPtr+= srcStride[0];

  1825.         dstPtr+= dstStride[0];

  1826.     }

  1827. 

  1828.     return srcSliceH;

  1829. }

  1830. 

  1831. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  1832. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1833.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  1834.     const enum PixelFormat srcFormat= c->srcFormat;

  1835.     const enum PixelFormat dstFormat= c->dstFormat;

  1836.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  1837.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  1838.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1839.     const int dstId= fmt_depth(dstFormat) >> 2;

  1840.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1841. 

  1842.     /* BGR -> BGR */

  1843.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  1844.        || (isRGB(srcFormat) && isRGB(dstFormat))){

  1845.         switch(srcId | (dstId<<4)){

  1846.         case 0x34: conv= rgb16to15; break;

  1847.         case 0x36: conv= rgb24to15; break;

  1848.         case 0x38: conv= rgb32to15; break;

  1849.         case 0x43: conv= rgb15to16; break;

  1850.         case 0x46: conv= rgb24to16; break;

  1851.         case 0x48: conv= rgb32to16; break;

  1852.         case 0x63: conv= rgb15to24; break;

  1853.         case 0x64: conv= rgb16to24; break;

  1854.         case 0x68: conv= rgb32to24; break;

  1855.         case 0x83: conv= rgb15to32; break;

  1856.         case 0x84: conv= rgb16to32; break;

  1857.         case 0x86: conv= rgb24to32; break;

  1858.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1859.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1860.         }

  1861.     }else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  1862.              || (isRGB(srcFormat) && isBGR(dstFormat))){

  1863.         switch(srcId | (dstId<<4)){

  1864.         case 0x33: conv= rgb15tobgr15; break;

  1865.         case 0x34: conv= rgb16tobgr15; break;

  1866.         case 0x36: conv= rgb24tobgr15; break;

  1867.         case 0x38: conv= rgb32tobgr15; break;

  1868.         case 0x43: conv= rgb15tobgr16; break;

  1869.         case 0x44: conv= rgb16tobgr16; break;

  1870.         case 0x46: conv= rgb24tobgr16; break;

  1871.         case 0x48: conv= rgb32tobgr16; break;

  1872.         case 0x63: conv= rgb15tobgr24; break;

  1873.         case 0x64: conv= rgb16tobgr24; break;

  1874.         case 0x66: conv= rgb24tobgr24; break;

  1875.         case 0x68: conv= rgb32tobgr24; break;

  1876.         case 0x83: conv= rgb15tobgr32; break;

  1877.         case 0x84: conv= rgb16tobgr32; break;

  1878.         case 0x86: conv= rgb24tobgr32; break;

  1879.         case 0x88: conv= rgb32tobgr32; break;

  1880.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1881.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1882.         }

  1883.     }else{

  1884.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1885.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1886.     }

  1887. 

  1888.     if(conv)

  1889.     {

  1890.         uint8_t *srcPtr= src[0];

  1891.         if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)

  1892.             srcPtr += ALT32_CORR;

  1893. 

  1894.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  1895.             conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1896.         else

  1897.         {

  1898.             int i;

  1899.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1900. 

  1901.             for (i=0; i<srcSliceH; i++)

  1902.             {

  1903.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1904.                 srcPtr+= srcStride[0];

  1905.                 dstPtr+= dstStride[0];

  1906.             }

  1907.         }

  1908.     }

  1909.     return srcSliceH;

  1910. }

  1911. 

  1912. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1913.                               int srcSliceH, uint8_t* dst[], int dstStride[]){

  1914. 

  1915.     rgb24toyv12(

  1916.         src[0],

  1917.         dst[0]+ srcSliceY    *dstStride[0],

  1918.         dst[1]+(srcSliceY>>1)*dstStride[1],

  1919.         dst[2]+(srcSliceY>>1)*dstStride[2],

  1920.         c->srcW, srcSliceH,

  1921.         dstStride[0], dstStride[1], srcStride[0]);

  1922.     return srcSliceH;

  1923. }

  1924. 

  1925. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

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

  1927.     int i;

  1928. 

  1929.     /* copy Y */

  1930.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  1931.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  1932.     else{

  1933.         uint8_t *srcPtr= src[0];

  1934.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1935. 

  1936.         for (i=0; i<srcSliceH; i++)

  1937.         {

  1938.             memcpy(dstPtr, srcPtr, c->srcW);

  1939.             srcPtr+= srcStride[0];

  1940.             dstPtr+= dstStride[0];

  1941.         }

  1942.     }

  1943. 

  1944.     if (c->dstFormat==PIX_FMT_YUV420P){

  1945.         planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);

  1946.         planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);

  1947.     }else{

  1948.         planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);

  1949.         planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);

  1950.     }

  1951.     return srcSliceH;

  1952. }

  1953. 

  1954. /* unscaled copy like stuff (assumes nearly identical formats) */

  1955. static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1956.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  1957. {

  1958.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1959.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1960.     else

  1961.     {

  1962.         int i;

  1963.         uint8_t *srcPtr= src[0];

  1964.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1965.         int length=0;

  1966. 

  1967.         /* universal length finder */

  1968.         while(length+c->srcW <= FFABS(dstStride[0])

  1969.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  1970.         assert(length!=0);

  1971. 

  1972.         for (i=0; i<srcSliceH; i++)

  1973.         {

  1974.             memcpy(dstPtr, srcPtr, length);

  1975.             srcPtr+= srcStride[0];

  1976.             dstPtr+= dstStride[0];

  1977.         }

  1978.     }

  1979.     return srcSliceH;

  1980. }

  1981. 

  1982. static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1983.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  1984. {

  1985.     int plane;

  1986.     for (plane=0; plane<3; plane++)

  1987.     {

  1988.         int length= plane==0 ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1989.         int y=      plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1990.         int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1991. 

  1992.         if ((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)

  1993.         {

  1994.             if (!isGray(c->dstFormat))

  1995.                 fillPlane(dst[plane], dstStride[plane], length, height, y, 128);

  1996.         }

  1997.         else

  1998.         {

  1999.             if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  2000.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  2001.             else

  2002.             {

  2003.                 int i;

  2004.                 uint8_t *srcPtr= src[plane];

  2005.                 uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  2006.                 for (i=0; i<height; i++)

  2007.                 {

  2008.                     memcpy(dstPtr, srcPtr, length);

  2009.                     srcPtr+= srcStride[plane];

  2010.                     dstPtr+= dstStride[plane];

  2011.                 }

  2012.             }

  2013.         }

  2014.     }

  2015.     return srcSliceH;

  2016. }

  2017. 

  2018. static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2019.                         int srcSliceH, uint8_t* dst[], int dstStride[]){

  2020. 

  2021.     int length= c->srcW;

  2022.     int y=      srcSliceY;

  2023.     int height= srcSliceH;

  2024.     int i, j;

  2025.     uint8_t *srcPtr= src[0];

  2026.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  2027. 

  2028.     if (!isGray(c->dstFormat)){

  2029.         int height= -((-srcSliceH)>>c->chrDstVSubSample);

  2030.         memset(dst[1], 128, dstStride[1]*height);

  2031.         memset(dst[2], 128, dstStride[2]*height);

  2032.     }

  2033.     if (c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;

  2034.     for (i=0; i<height; i++)

  2035.     {

  2036.         for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  2037.         srcPtr+= srcStride[0];

  2038.         dstPtr+= dstStride[0];

  2039.     }

  2040.     return srcSliceH;

  2041. }

  2042. 

  2043. static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

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

  2045. 

  2046.     int length= c->srcW;

  2047.     int y=      srcSliceY;

  2048.     int height= srcSliceH;

  2049.     int i, j;

  2050.     uint8_t *srcPtr= src[0];

  2051.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  2052.     for (i=0; i<height; i++)

  2053.     {

  2054.         for (j=0; j<length; j++)

  2055.         {

  2056.             dstPtr[j<<1] = srcPtr[j];

  2057.             dstPtr[(j<<1)+1] = srcPtr[j];

  2058.         }

  2059.         srcPtr+= srcStride[0];

  2060.         dstPtr+= dstStride[0];

  2061.     }

  2062.     return srcSliceH;

  2063. }

  2064. 

  2065. static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2066.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  2067. 

  2068.     int length= c->srcW;

  2069.     int y=      srcSliceY;

  2070.     int height= srcSliceH;

  2071.     int i, j;

  2072.     uint16_t *srcPtr= (uint16_t*)src[0];

  2073.     uint16_t *dstPtr= (uint16_t*)(dst[0] + dstStride[0]*y/2);

  2074.     for (i=0; i<height; i++)

  2075.     {

  2076.         for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);

  2077.         srcPtr+= srcStride[0]/2;

  2078.         dstPtr+= dstStride[0]/2;

  2079.     }

  2080.     return srcSliceH;

  2081. }

  2082. 

  2083. 

  2084. static void getSubSampleFactors(int *h, int *v, int format){

  2085.     switch(format){

  2086.     case PIX_FMT_UYVY422:

  2087.     case PIX_FMT_YUYV422:

  2088.         *h=1;

  2089.         *v=0;

  2090.         break;

  2091.     case PIX_FMT_YUV420P:

  2092.     case PIX_FMT_YUVA420P:

  2093.     case PIX_FMT_GRAY16BE:

  2094.     case PIX_FMT_GRAY16LE:

  2095.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  2096.     case PIX_FMT_NV12:

  2097.     case PIX_FMT_NV21:

  2098.         *h=1;

  2099.         *v=1;

  2100.         break;

  2101.     case PIX_FMT_YUV440P:

  2102.         *h=0;

  2103.         *v=1;

  2104.         break;

  2105.     case PIX_FMT_YUV410P:

  2106.         *h=2;

  2107.         *v=2;

  2108.         break;

  2109.     case PIX_FMT_YUV444P:

  2110.         *h=0;

  2111.         *v=0;

  2112.         break;

  2113.     case PIX_FMT_YUV422P:

  2114.         *h=1;

  2115.         *v=0;

  2116.         break;

  2117.     case PIX_FMT_YUV411P:

  2118.         *h=2;

  2119.         *v=0;

  2120.         break;

  2121.     default:

  2122.         *h=0;

  2123.         *v=0;

  2124.         break;

  2125.     }

  2126. }

  2127. 

  2128. static uint16_t roundToInt16(int64_t f){

  2129.     int r= (f + (1<<15))>>16;

  2130.          if (r<-0x7FFF) return 0x8000;

  2131.     else if (r> 0x7FFF) return 0x7FFF;

  2132.     else                return r;

  2133. }

  2134. 

  2135. /**

  2136.  * @param inv_table the yuv2rgb coefficients, normally ff_yuv2rgb_coeffs[x]

  2137.  * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235

  2138.  * @return -1 if not supported

  2139.  */

  2140. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){

  2141.     int64_t crv =  inv_table[0];

  2142.     int64_t cbu =  inv_table[1];

  2143.     int64_t cgu = -inv_table[2];

  2144.     int64_t cgv = -inv_table[3];

  2145.     int64_t cy  = 1<<16;

  2146.     int64_t oy  = 0;

  2147. 

  2148.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  2149.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  2150. 

  2151.     c->brightness= brightness;

  2152.     c->contrast  = contrast;

  2153.     c->saturation= saturation;

  2154.     c->srcRange  = srcRange;

  2155.     c->dstRange  = dstRange;

  2156.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return 0;

  2157. 

  2158.     c->uOffset=   0x0400040004000400LL;

  2159.     c->vOffset=   0x0400040004000400LL;

  2160. 

  2161.     if (!srcRange){

  2162.         cy= (cy*255) / 219;

  2163.         oy= 16<<16;

  2164.     }else{

  2165.         crv= (crv*224) / 255;

  2166.         cbu= (cbu*224) / 255;

  2167.         cgu= (cgu*224) / 255;

  2168.         cgv= (cgv*224) / 255;

  2169.     }

  2170. 

  2171.     cy = (cy *contrast             )>>16;

  2172.     crv= (crv*contrast * saturation)>>32;

  2173.     cbu= (cbu*contrast * saturation)>>32;

  2174.     cgu= (cgu*contrast * saturation)>>32;

  2175.     cgv= (cgv*contrast * saturation)>>32;

  2176. 

  2177.     oy -= 256*brightness;

  2178. 

  2179.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  2180.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  2181.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  2182.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  2183.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  2184.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  2185. 

  2186.     c->yuv2rgb_y_coeff  = (int16_t)roundToInt16(cy <<13);

  2187.     c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);

  2188.     c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);

  2189.     c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);

  2190.     c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);

  2191.     c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);

  2192. 

  2193.     ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  2194.     //FIXME factorize

  2195. 

  2196. #ifdef COMPILE_ALTIVEC

  2197.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  2198.         ff_yuv2rgb_init_tables_altivec(c, inv_table, brightness, contrast, saturation);

  2199. #endif

  2200.     return 0;

  2201. }

  2202. 

  2203. /**

  2204.  * @return -1 if not supported

  2205.  */

  2206. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){

  2207.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2208. 

  2209.     *inv_table = c->srcColorspaceTable;

  2210.     *table     = c->dstColorspaceTable;

  2211.     *srcRange  = c->srcRange;

  2212.     *dstRange  = c->dstRange;

  2213.     *brightness= c->brightness;

  2214.     *contrast  = c->contrast;

  2215.     *saturation= c->saturation;

  2216. 

  2217.     return 0;

  2218. }

  2219. 

  2220. static int handle_jpeg(enum PixelFormat *format)

  2221. {

  2222.     switch (*format) {

  2223.         case PIX_FMT_YUVJ420P:

  2224.             *format = PIX_FMT_YUV420P;

  2225.             return 1;

  2226.         case PIX_FMT_YUVJ422P:

  2227.             *format = PIX_FMT_YUV422P;

  2228.             return 1;

  2229.         case PIX_FMT_YUVJ444P:

  2230.             *format = PIX_FMT_YUV444P;

  2231.             return 1;

  2232.         case PIX_FMT_YUVJ440P:

  2233.             *format = PIX_FMT_YUV440P;

  2234.             return 1;

  2235.         default:

  2236.             return 0;

  2237.     }

  2238. }

  2239. 

  2240. SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  2241.                            SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){

  2242. 

  2243.     SwsContext *c;

  2244.     int i;

  2245.     int usesVFilter, usesHFilter;

  2246.     int unscaled, needsDither;

  2247.     int srcRange, dstRange;

  2248.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2249. #if ARCH_X86

  2250.     if (flags & SWS_CPU_CAPS_MMX)

  2251.         __asm__ volatile("emms\n\t"::: "memory");

  2252. #endif

  2253. 

  2254. #if !defined(RUNTIME_CPUDETECT) || !CONFIG_GPL //ensure that the flags match the compiled variant if cpudetect is off

  2255.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2256. #if   HAVE_MMX2

  2257.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2258. #elif HAVE_AMD3DNOW

  2259.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2260. #elif HAVE_MMX

  2261.     flags |= SWS_CPU_CAPS_MMX;

  2262. #elif HAVE_ALTIVEC

  2263.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2264. #elif ARCH_BFIN

  2265.     flags |= SWS_CPU_CAPS_BFIN;

  2266. #endif

  2267. #endif /* RUNTIME_CPUDETECT */

  2268.     if (clip_table[512] != 255) globalInit();

  2269.     if (!rgb15to16) sws_rgb2rgb_init(flags);

  2270. 

  2271.     unscaled = (srcW == dstW && srcH == dstH);

  2272.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2273.         && (fmt_depth(dstFormat))<24

  2274.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2275. 

  2276.     srcRange = handle_jpeg(&srcFormat);

  2277.     dstRange = handle_jpeg(&dstFormat);

  2278. 

  2279.     if (!isSupportedIn(srcFormat))

  2280.     {

  2281.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));

  2282.         return NULL;

  2283.     }

  2284.     if (!isSupportedOut(dstFormat))

  2285.     {

  2286.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));

  2287.         return NULL;

  2288.     }

  2289. 

  2290.     i= flags & ( SWS_POINT

  2291.                 |SWS_AREA

  2292.                 |SWS_BILINEAR

  2293.                 |SWS_FAST_BILINEAR

  2294.                 |SWS_BICUBIC

  2295.                 |SWS_X

  2296.                 |SWS_GAUSS

  2297.                 |SWS_LANCZOS

  2298.                 |SWS_SINC

  2299.                 |SWS_SPLINE

  2300.                 |SWS_BICUBLIN);

  2301.     if(!i || (i & (i-1)))

  2302.     {

  2303.         av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be chosen\n");

  2304.         return NULL;

  2305.     }

  2306. 

  2307.     /* sanity check */

  2308.     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

  2309.     {

  2310.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2311.                srcW, srcH, dstW, dstH);

  2312.         return NULL;

  2313.     }

  2314.     if(srcW > VOFW || dstW > VOFW){

  2315.         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile-time maximum width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");

  2316.         return NULL;

  2317.     }

  2318. 

  2319.     if (!dstFilter) dstFilter= &dummyFilter;

  2320.     if (!srcFilter) srcFilter= &dummyFilter;

  2321. 

  2322.     c= av_mallocz(sizeof(SwsContext));

  2323. 

  2324.     c->av_class = &sws_context_class;

  2325.     c->srcW= srcW;

  2326.     c->srcH= srcH;

  2327.     c->dstW= dstW;

  2328.     c->dstH= dstH;

  2329.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2330.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2331.     c->flags= flags;

  2332.     c->dstFormat= dstFormat;

  2333.     c->srcFormat= srcFormat;

  2334.     c->vRounder= 4* 0x0001000100010001ULL;

  2335. 

  2336.     usesHFilter= usesVFilter= 0;

  2337.     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;

  2338.     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;

  2339.     if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;

  2340.     if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;

  2341.     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;

  2342.     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;

  2343.     if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;

  2344.     if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;

  2345. 

  2346.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2347.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2348. 

  2349.     // reuse chroma for 2 pixels RGB/BGR unless user wants full chroma interpolation

  2350.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2351. 

  2352.     // drop some chroma lines if the user wants it

  2353.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2354.     c->chrSrcVSubSample+= c->vChrDrop;

  2355. 

  2356.     // drop every other pixel for chroma calculation unless user wants full chroma

  2357.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2358.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2359.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2360.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE

  2361.       && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2362.         c->chrSrcHSubSample=1;

  2363. 

  2364.     if (param){

  2365.         c->param[0] = param[0];

  2366.         c->param[1] = param[1];

  2367.     }else{

  2368.         c->param[0] =

  2369.         c->param[1] = SWS_PARAM_DEFAULT;

  2370.     }

  2371. 

  2372.     c->chrIntHSubSample= c->chrDstHSubSample;

  2373.     c->chrIntVSubSample= c->chrSrcVSubSample;

  2374. 

  2375.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2376.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2377.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2378.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2379.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2380. 

  2381.     sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);

  2382. 

  2383.     /* unscaled special cases */

  2384.     if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat)))

  2385.     {

  2386.         /* yv12_to_nv12 */

  2387.         if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))

  2388.         {

  2389.             c->swScale= PlanarToNV12Wrapper;

  2390.         }

  2391.         /* yuv2bgr */

  2392.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && (isBGR(dstFormat) || isRGB(dstFormat))

  2393.             && !(flags & SWS_ACCURATE_RND) && !(dstH&1))

  2394.         {

  2395.             c->swScale= ff_yuv2rgb_get_func_ptr(c);

  2396.         }

  2397. 

  2398.         if (srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_BITEXACT))

  2399.         {

  2400.             c->swScale= yvu9toyv12Wrapper;

  2401.         }

  2402. 

  2403.         /* bgr24toYV12 */

  2404.         if (srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P && !(flags & SWS_ACCURATE_RND))

  2405.             c->swScale= bgr24toyv12Wrapper;

  2406. 

  2407.         /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  2408.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2409.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2410.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2411.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2412.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2413.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2414.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2415.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2416.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2417.            && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  2418.                                              && dstFormat != PIX_FMT_RGB32_1

  2419.                                              && dstFormat != PIX_FMT_BGR32_1

  2420.            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2421.              c->swScale= rgb2rgbWrapper;

  2422. 

  2423.         if ((usePal(srcFormat) && (

  2424.                  dstFormat == PIX_FMT_RGB32   ||

  2425.                  dstFormat == PIX_FMT_RGB32_1 ||

  2426.                  dstFormat == PIX_FMT_RGB24   ||

  2427.                  dstFormat == PIX_FMT_BGR32   ||

  2428.                  dstFormat == PIX_FMT_BGR32_1 ||

  2429.                  dstFormat == PIX_FMT_BGR24)))

  2430.              c->swScale= pal2rgbWrapper;

  2431. 

  2432.         if (srcFormat == PIX_FMT_YUV422P)

  2433.         {

  2434.             if (dstFormat == PIX_FMT_YUYV422)

  2435.                 c->swScale= YUV422PToYuy2Wrapper;

  2436.             else if (dstFormat == PIX_FMT_UYVY422)

  2437.                 c->swScale= YUV422PToUyvyWrapper;

  2438.         }

  2439. 

  2440.         /* LQ converters if -sws 0 or -sws 4*/

  2441.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){

  2442.             /* yv12_to_yuy2 */

  2443.             if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P)

  2444.             {

  2445.                 if (dstFormat == PIX_FMT_YUYV422)

  2446.                     c->swScale= PlanarToYuy2Wrapper;

  2447.                 else if (dstFormat == PIX_FMT_UYVY422)

  2448.                     c->swScale= PlanarToUyvyWrapper;

  2449.             }

  2450. 

  2451.             if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV420P)

  2452.                 c->swScale= YUYV2YUV420Wrapper;

  2453.             if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV420P)

  2454.                 c->swScale= UYVY2YUV420Wrapper;

  2455.         }

  2456.         if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)

  2457.             c->swScale= YUYV2YUV422Wrapper;

  2458.         if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)

  2459.             c->swScale= UYVY2YUV422Wrapper;

  2460. 

  2461. #ifdef COMPILE_ALTIVEC

  2462.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2463.             !(c->flags & SWS_BITEXACT) &&

  2464.             srcFormat == PIX_FMT_YUV420P) {

  2465.           // unscaled YV12 -> packed YUV, we want speed

  2466.           if (dstFormat == PIX_FMT_YUYV422)

  2467.               c->swScale= yv12toyuy2_unscaled_altivec;

  2468.           else if (dstFormat == PIX_FMT_UYVY422)

  2469.               c->swScale= yv12touyvy_unscaled_altivec;

  2470.         }

  2471. #endif

  2472. 

  2473.         /* simple copy */

  2474.         if (  srcFormat == dstFormat

  2475.             || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)

  2476.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2477.             || (isPlanarYUV(dstFormat) && isGray(srcFormat)))

  2478.         {

  2479.             if (isPacked(c->srcFormat))

  2480.                 c->swScale= packedCopy;

  2481.             else /* Planar YUV or gray */

  2482.                 c->swScale= planarCopy;

  2483.         }

  2484. 

  2485.         /* gray16{le,be} conversions */

  2486.         if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))

  2487.         {

  2488.             c->swScale= gray16togray;

  2489.         }

  2490.         if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))

  2491.         {

  2492.             c->swScale= graytogray16;

  2493.         }

  2494.         if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))

  2495.         {

  2496.             c->swScale= gray16swap;

  2497.         }

  2498. 

  2499. #if ARCH_BFIN

  2500.         if (flags & SWS_CPU_CAPS_BFIN)

  2501.             ff_bfin_get_unscaled_swscale (c);

  2502. #endif

  2503. 

  2504.         if (c->swScale){

  2505.             if (flags&SWS_PRINT_INFO)

  2506.                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",

  2507.                                 sws_format_name(srcFormat), sws_format_name(dstFormat));

  2508.             return c;

  2509.         }

  2510.     }

  2511. 

  2512.     if (flags & SWS_CPU_CAPS_MMX2)

  2513.     {

  2514.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2515.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))

  2516.         {

  2517.             if (flags&SWS_PRINT_INFO)

  2518.                 av_log(c, AV_LOG_INFO, "output width is not a multiple of 32 -> no MMX2 scaler\n");

  2519.         }

  2520.         if (usesHFilter) c->canMMX2BeUsed=0;

  2521.     }

  2522.     else

  2523.         c->canMMX2BeUsed=0;

  2524. 

  2525.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2526.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2527. 

  2528.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2529.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2530.     // n-2 is the last chrominance sample available

  2531.     // this is not perfect, but no one should notice the difference, the more correct variant

  2532.     // would be like the vertical one, but that would require some special code for the

  2533.     // first and last pixel

  2534.     if (flags&SWS_FAST_BILINEAR)

  2535.     {

  2536.         if (c->canMMX2BeUsed)

  2537.         {

  2538.             c->lumXInc+= 20;

  2539.             c->chrXInc+= 20;

  2540.         }

  2541.         //we don't use the x86 asm scaler if MMX is available

  2542.         else if (flags & SWS_CPU_CAPS_MMX)

  2543.         {

  2544.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2545.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2546.         }

  2547.     }

  2548. 

  2549.     /* precalculate horizontal scaler filter coefficients */

  2550.     {

  2551.         const int filterAlign=

  2552.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2553.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2554.             1;

  2555. 

  2556.         initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2557.                    srcW      ,       dstW, filterAlign, 1<<14,

  2558.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2559.                    srcFilter->lumH, dstFilter->lumH, c->param);

  2560.         initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2561.                    c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2562.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2563.                    srcFilter->chrH, dstFilter->chrH, c->param);

  2564. 

  2565. #define MAX_FUNNY_CODE_SIZE 10000

  2566. #if defined(COMPILE_MMX2)

  2567. // can't downscale !!!

  2568.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))

  2569.         {

  2570. #ifdef MAP_ANONYMOUS

  2571.             c->funnyYCode  = mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2572.             c->funnyUVCode = mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2573. #elif HAVE_VIRTUALALLOC

  2574.             c->funnyYCode  = VirtualAlloc(NULL, MAX_FUNNY_CODE_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2575.             c->funnyUVCode = VirtualAlloc(NULL, MAX_FUNNY_CODE_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2576. #else

  2577.             c->funnyYCode  = av_malloc(MAX_FUNNY_CODE_SIZE);

  2578.             c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2579. #endif

  2580. 

  2581.             c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));

  2582.             c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));

  2583.             c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));

  2584.             c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));

  2585. 

  2586.             initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2587.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2588.         }

  2589. #endif /* defined(COMPILE_MMX2) */

  2590.     } // initialize horizontal stuff

  2591. 

  2592. 

  2593. 

  2594.     /* precalculate vertical scaler filter coefficients */

  2595.     {

  2596.         const int filterAlign=

  2597.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2598.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2599.             1;

  2600. 

  2601.         initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2602.                    srcH      ,        dstH, filterAlign, (1<<12),

  2603.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2604.                    srcFilter->lumV, dstFilter->lumV, c->param);

  2605.         initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2606.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12),

  2607.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2608.                    srcFilter->chrV, dstFilter->chrV, c->param);

  2609. 

  2610. #if HAVE_ALTIVEC

  2611.         c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);

  2612.         c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);

  2613. 

  2614.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2615.             int j;

  2616.             short *p = (short *)&c->vYCoeffsBank[i];

  2617.             for (j=0;j<8;j++)

  2618.                 p[j] = c->vLumFilter[i];

  2619.         }

  2620. 

  2621.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2622.             int j;

  2623.             short *p = (short *)&c->vCCoeffsBank[i];

  2624.             for (j=0;j<8;j++)

  2625.                 p[j] = c->vChrFilter[i];

  2626.         }

  2627. #endif

  2628.     }

  2629. 

  2630.     // calculate buffer sizes so that they won't run out while handling these damn slices

  2631.     c->vLumBufSize= c->vLumFilterSize;

  2632.     c->vChrBufSize= c->vChrFilterSize;

  2633.     for (i=0; i<dstH; i++)

  2634.     {

  2635.         int chrI= i*c->chrDstH / dstH;

  2636.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2637.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2638. 

  2639.         nextSlice>>= c->chrSrcVSubSample;

  2640.         nextSlice<<= c->chrSrcVSubSample;

  2641.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2642.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];

  2643.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2644.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2645.     }

  2646. 

  2647.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2648.     c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2649.     c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));

  2650.     //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)

  2651.     /* align at 16 bytes for AltiVec */

  2652.     for (i=0; i<c->vLumBufSize; i++)

  2653.         c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2654.     for (i=0; i<c->vChrBufSize; i++)

  2655.         c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);

  2656. 

  2657.     //try to avoid drawing green stuff between the right end and the stride end

  2658.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);

  2659. 

  2660.     assert(2*VOFW == VOF);

  2661. 

  2662.     assert(c->chrDstH <= dstH);

  2663. 

  2664.     if (flags&SWS_PRINT_INFO)

  2665.     {

  2666. #ifdef DITHER1XBPP

  2667.         const char *dither= " dithered";

  2668. #else

  2669.         const char *dither= "";

  2670. #endif

  2671.         if (flags&SWS_FAST_BILINEAR)

  2672.             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");

  2673.         else if (flags&SWS_BILINEAR)

  2674.             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");

  2675.         else if (flags&SWS_BICUBIC)

  2676.             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");

  2677.         else if (flags&SWS_X)

  2678.             av_log(c, AV_LOG_INFO, "Experimental scaler, ");

  2679.         else if (flags&SWS_POINT)

  2680.             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");

  2681.         else if (flags&SWS_AREA)

  2682.             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");

  2683.         else if (flags&SWS_BICUBLIN)

  2684.             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");

  2685.         else if (flags&SWS_GAUSS)

  2686.             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");

  2687.         else if (flags&SWS_SINC)

  2688.             av_log(c, AV_LOG_INFO, "Sinc scaler, ");

  2689.         else if (flags&SWS_LANCZOS)

  2690.             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");

  2691.         else if (flags&SWS_SPLINE)

  2692.             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");

  2693.         else

  2694.             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");

  2695. 

  2696.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2697.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  2698.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2699.         else

  2700.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  2701.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  2702. 

  2703.         if (flags & SWS_CPU_CAPS_MMX2)

  2704.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  2705.         else if (flags & SWS_CPU_CAPS_3DNOW)

  2706.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  2707.         else if (flags & SWS_CPU_CAPS_MMX)

  2708.             av_log(c, AV_LOG_INFO, "using MMX\n");

  2709.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  2710.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  2711.         else

  2712.             av_log(c, AV_LOG_INFO, "using C\n");

  2713.     }

  2714. 

  2715.     if (flags & SWS_PRINT_INFO)

  2716.     {

  2717.         if (flags & SWS_CPU_CAPS_MMX)

  2718.         {

  2719.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2720.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  2721.             else

  2722.             {

  2723.                 if (c->hLumFilterSize==4)

  2724.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");

  2725.                 else if (c->hLumFilterSize==8)

  2726.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");

  2727.                 else

  2728.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");

  2729. 

  2730.                 if (c->hChrFilterSize==4)

  2731.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");

  2732.                 else if (c->hChrFilterSize==8)

  2733.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");

  2734.                 else

  2735.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");

  2736.             }

  2737.         }

  2738.         else

  2739.         {

  2740. #if ARCH_X86

  2741.             av_log(c, AV_LOG_VERBOSE, "using x86 asm scaler for horizontal scaling\n");

  2742. #else

  2743.             if (flags & SWS_FAST_BILINEAR)

  2744.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");

  2745.             else

  2746.                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");

  2747. #endif

  2748.         }

  2749.         if (isPlanarYUV(dstFormat))

  2750.         {

  2751.             if (c->vLumFilterSize==1)

  2752.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2753.             else

  2754.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2755.         }

  2756.         else

  2757.         {

  2758.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  2759.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  2760.                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2761.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  2762.                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2763.             else

  2764.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2765.         }

  2766. 

  2767.         if (dstFormat==PIX_FMT_BGR24)

  2768.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 converter\n",

  2769.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  2770.         else if (dstFormat==PIX_FMT_RGB32)

  2771.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2772.         else if (dstFormat==PIX_FMT_BGR565)

  2773.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2774.         else if (dstFormat==PIX_FMT_BGR555)

  2775.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2776. 

  2777.         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  2778.     }

  2779.     if (flags & SWS_PRINT_INFO)

  2780.     {

  2781.         av_log(c, AV_LOG_DEBUG, "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2782.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  2783.         av_log(c, AV_LOG_DEBUG, "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2784.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  2785.     }

  2786. 

  2787.     c->swScale= getSwsFunc(flags);

  2788.     return c;

  2789. }

  2790. 

  2791. /**

  2792.  * swscale wrapper, so we don't need to export the SwsContext.

  2793.  * Assumes planar YUV to be in YUV order instead of YVU.

  2794.  */

  2795. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2796.               int srcSliceH, uint8_t* dst[], int dstStride[]){

  2797.     int i;

  2798.     uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};

  2799. 

  2800.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  2801.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  2802.         return 0;

  2803.     }

  2804.     if (c->sliceDir == 0) {

  2805.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  2806.     }

  2807. 

  2808.     if (usePal(c->srcFormat)){

  2809.         for (i=0; i<256; i++){

  2810.             int p, r, g, b,y,u,v;

  2811.             if(c->srcFormat == PIX_FMT_PAL8){

  2812.                 p=((uint32_t*)(src[1]))[i];

  2813.                 r= (p>>16)&0xFF;

  2814.                 g= (p>> 8)&0xFF;

  2815.                 b=  p     &0xFF;

  2816.             }else if(c->srcFormat == PIX_FMT_RGB8){

  2817.                 r= (i>>5    )*36;

  2818.                 g= ((i>>2)&7)*36;

  2819.                 b= (i&3     )*85;

  2820.             }else if(c->srcFormat == PIX_FMT_BGR8){

  2821.                 b= (i>>6    )*85;

  2822.                 g= ((i>>3)&7)*36;

  2823.                 r= (i&7     )*36;

  2824.             }else if(c->srcFormat == PIX_FMT_RGB4_BYTE){

  2825.                 r= (i>>3    )*255;

  2826.                 g= ((i>>1)&3)*85;

  2827.                 b= (i&1     )*255;

  2828.             }else {

  2829.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  2830.                 b= (i>>3    )*255;

  2831.                 g= ((i>>1)&3)*85;

  2832.                 r= (i&1     )*255;

  2833.             }

  2834.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2835.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2836.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2837.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  2838. 

  2839. 

  2840.             switch(c->dstFormat) {

  2841.             case PIX_FMT_BGR32:

  2842. #ifndef WORDS_BIGENDIAN

  2843.             case PIX_FMT_RGB24:

  2844. #endif

  2845.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  2846.                 break;

  2847.             case PIX_FMT_BGR32_1:

  2848. #ifdef  WORDS_BIGENDIAN

  2849.             case PIX_FMT_BGR24:

  2850. #endif

  2851.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  2852.                 break;

  2853.             case PIX_FMT_RGB32_1:

  2854. #ifdef  WORDS_BIGENDIAN

  2855.             case PIX_FMT_RGB24:

  2856. #endif

  2857.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  2858.                 break;

  2859.             case PIX_FMT_RGB32:

  2860. #ifndef WORDS_BIGENDIAN

  2861.             case PIX_FMT_BGR24:

  2862. #endif

  2863.             default:

  2864.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  2865.             }

  2866.         }

  2867.     }

  2868. 

  2869.     // copy strides, so they can safely be modified

  2870.     if (c->sliceDir == 1) {

  2871.         // slices go from top to bottom

  2872.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};

  2873.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};

  2874.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);

  2875.     } else {

  2876.         // slices go from bottom to top => we flip the image internally

  2877.         uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],

  2878.                            dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],

  2879.                            dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2],

  2880.                            dst[3] + (c->dstH-1)*dstStride[3]};

  2881.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};

  2882.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};

  2883. 

  2884.         src2[0] += (srcSliceH-1)*srcStride[0];

  2885.         if (!usePal(c->srcFormat))

  2886.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  2887.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  2888.         src2[3] += (srcSliceH-1)*srcStride[3];

  2889. 

  2890.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  2891.     }

  2892. }

  2893. 

  2894. #if LIBSWSCALE_VERSION_MAJOR < 1

  2895. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2896.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  2897.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  2898. }

  2899. #endif

  2900. 

  2901. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  2902.                                 float lumaSharpen, float chromaSharpen,

  2903.                                 float chromaHShift, float chromaVShift,

  2904.                                 int verbose)

  2905. {

  2906.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  2907. 

  2908.     if (lumaGBlur!=0.0){

  2909.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  2910.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  2911.     }else{

  2912.         filter->lumH= sws_getIdentityVec();

  2913.         filter->lumV= sws_getIdentityVec();

  2914.     }

  2915. 

  2916.     if (chromaGBlur!=0.0){

  2917.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  2918.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  2919.     }else{

  2920.         filter->chrH= sws_getIdentityVec();

  2921.         filter->chrV= sws_getIdentityVec();

  2922.     }

  2923. 

  2924.     if (chromaSharpen!=0.0){

  2925.         SwsVector *id= sws_getIdentityVec();

  2926.         sws_scaleVec(filter->chrH, -chromaSharpen);

  2927.         sws_scaleVec(filter->chrV, -chromaSharpen);

  2928.         sws_addVec(filter->chrH, id);

  2929.         sws_addVec(filter->chrV, id);

  2930.         sws_freeVec(id);

  2931.     }

  2932. 

  2933.     if (lumaSharpen!=0.0){

  2934.         SwsVector *id= sws_getIdentityVec();

  2935.         sws_scaleVec(filter->lumH, -lumaSharpen);

  2936.         sws_scaleVec(filter->lumV, -lumaSharpen);

  2937.         sws_addVec(filter->lumH, id);

  2938.         sws_addVec(filter->lumV, id);

  2939.         sws_freeVec(id);

  2940.     }

  2941. 

  2942.     if (chromaHShift != 0.0)

  2943.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  2944. 

  2945.     if (chromaVShift != 0.0)

  2946.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  2947. 

  2948.     sws_normalizeVec(filter->chrH, 1.0);

  2949.     sws_normalizeVec(filter->chrV, 1.0);

  2950.     sws_normalizeVec(filter->lumH, 1.0);

  2951.     sws_normalizeVec(filter->lumV, 1.0);

  2952. 

  2953.     if (verbose) sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);

  2954.     if (verbose) sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);

  2955. 

  2956.     return filter;

  2957. }

  2958. 

  2959. SwsVector *sws_getGaussianVec(double variance, double quality){

  2960.     const int length= (int)(variance*quality + 0.5) | 1;

  2961.     int i;

  2962.     double *coeff= av_malloc(length*sizeof(double));

  2963.     double middle= (length-1)*0.5;

  2964.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2965. 

  2966.     vec->coeff= coeff;

  2967.     vec->length= length;

  2968. 

  2969.     for (i=0; i<length; i++)

  2970.     {

  2971.         double dist= i-middle;

  2972.         coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);

  2973.     }

  2974. 

  2975.     sws_normalizeVec(vec, 1.0);

  2976. 

  2977.     return vec;

  2978. }

  2979. 

  2980. SwsVector *sws_getConstVec(double c, int length){

  2981.     int i;

  2982.     double *coeff= av_malloc(length*sizeof(double));

  2983.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2984. 

  2985.     vec->coeff= coeff;

  2986.     vec->length= length;

  2987. 

  2988.     for (i=0; i<length; i++)

  2989.         coeff[i]= c;

  2990. 

  2991.     return vec;

  2992. }

  2993. 

  2994. 

  2995. SwsVector *sws_getIdentityVec(void){

  2996.     return sws_getConstVec(1.0, 1);

  2997. }

  2998. 

  2999. double sws_dcVec(SwsVector *a){

  3000.     int i;

  3001.     double sum=0;

  3002. 

  3003.     for (i=0; i<a->length; i++)

  3004.         sum+= a->coeff[i];

  3005. 

  3006.     return sum;

  3007. }

  3008. 

  3009. void sws_scaleVec(SwsVector *a, double scalar){

  3010.     int i;

  3011. 

  3012.     for (i=0; i<a->length; i++)

  3013.         a->coeff[i]*= scalar;

  3014. }

  3015. 

  3016. void sws_normalizeVec(SwsVector *a, double height){

  3017.     sws_scaleVec(a, height/sws_dcVec(a));

  3018. }

  3019. 

  3020. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){

  3021.     int length= a->length + b->length - 1;

  3022.     double *coeff= av_malloc(length*sizeof(double));

  3023.     int i, j;

  3024.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3025. 

  3026.     vec->coeff= coeff;

  3027.     vec->length= length;

  3028. 

  3029.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3030. 

  3031.     for (i=0; i<a->length; i++)

  3032.     {

  3033.         for (j=0; j<b->length; j++)

  3034.         {

  3035.             coeff[i+j]+= a->coeff[i]*b->coeff[j];

  3036.         }

  3037.     }

  3038. 

  3039.     return vec;

  3040. }

  3041. 

  3042. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){

  3043.     int length= FFMAX(a->length, b->length);

  3044.     double *coeff= av_malloc(length*sizeof(double));

  3045.     int i;

  3046.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3047. 

  3048.     vec->coeff= coeff;

  3049.     vec->length= length;

  3050. 

  3051.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3052. 

  3053.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3054.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  3055. 

  3056.     return vec;

  3057. }

  3058. 

  3059. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){

  3060.     int length= FFMAX(a->length, b->length);

  3061.     double *coeff= av_malloc(length*sizeof(double));

  3062.     int i;

  3063.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3064. 

  3065.     vec->coeff= coeff;

  3066.     vec->length= length;

  3067. 

  3068.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3069. 

  3070.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3071.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  3072. 

  3073.     return vec;

  3074. }

  3075. 

  3076. /* shift left / or right if "shift" is negative */

  3077. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){

  3078.     int length= a->length + FFABS(shift)*2;

  3079.     double *coeff= av_malloc(length*sizeof(double));

  3080.     int i;

  3081.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3082. 

  3083.     vec->coeff= coeff;

  3084.     vec->length= length;

  3085. 

  3086.     for (i=0; i<length; i++) coeff[i]= 0.0;

  3087. 

  3088.     for (i=0; i<a->length; i++)

  3089.     {

  3090.         coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  3091.     }

  3092. 

  3093.     return vec;

  3094. }

  3095. 

  3096. void sws_shiftVec(SwsVector *a, int shift){

  3097.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  3098.     av_free(a->coeff);

  3099.     a->coeff= shifted->coeff;

  3100.     a->length= shifted->length;

  3101.     av_free(shifted);

  3102. }

  3103. 

  3104. void sws_addVec(SwsVector *a, SwsVector *b){

  3105.     SwsVector *sum= sws_sumVec(a, b);

  3106.     av_free(a->coeff);

  3107.     a->coeff= sum->coeff;

  3108.     a->length= sum->length;

  3109.     av_free(sum);

  3110. }

  3111. 

  3112. void sws_subVec(SwsVector *a, SwsVector *b){

  3113.     SwsVector *diff= sws_diffVec(a, b);

  3114.     av_free(a->coeff);

  3115.     a->coeff= diff->coeff;

  3116.     a->length= diff->length;

  3117.     av_free(diff);

  3118. }

  3119. 

  3120. void sws_convVec(SwsVector *a, SwsVector *b){

  3121.     SwsVector *conv= sws_getConvVec(a, b);

  3122.     av_free(a->coeff);

  3123.     a->coeff= conv->coeff;

  3124.     a->length= conv->length;

  3125.     av_free(conv);

  3126. }

  3127. 

  3128. SwsVector *sws_cloneVec(SwsVector *a){

  3129.     double *coeff= av_malloc(a->length*sizeof(double));

  3130.     int i;

  3131.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  3132. 

  3133.     vec->coeff= coeff;

  3134.     vec->length= a->length;

  3135. 

  3136.     for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];

  3137. 

  3138.     return vec;

  3139. }

  3140. 

  3141. void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level){

  3142.     int i;

  3143.     double max=0;

  3144.     double min=0;

  3145.     double range;

  3146. 

  3147.     for (i=0; i<a->length; i++)

  3148.         if (a->coeff[i]>max) max= a->coeff[i];

  3149. 

  3150.     for (i=0; i<a->length; i++)

  3151.         if (a->coeff[i]<min) min= a->coeff[i];

  3152. 

  3153.     range= max - min;

  3154. 

  3155.     for (i=0; i<a->length; i++)

  3156.     {

  3157.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  3158.         av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);

  3159.         for (;x>0; x--) av_log(log_ctx, log_level, " ");

  3160.         av_log(log_ctx, log_level, "|\n");

  3161.     }

  3162. }

  3163. 

  3164. #if LIBSWSCALE_VERSION_MAJOR < 1

  3165. void sws_printVec(SwsVector *a){

  3166.     sws_printVec2(a, NULL, AV_LOG_DEBUG);

  3167. }

  3168. #endif

  3169. 

  3170. void sws_freeVec(SwsVector *a){

  3171.     if (!a) return;

  3172.     av_freep(&a->coeff);

  3173.     a->length=0;

  3174.     av_free(a);

  3175. }

  3176. 

  3177. void sws_freeFilter(SwsFilter *filter){

  3178.     if (!filter) return;

  3179. 

  3180.     if (filter->lumH) sws_freeVec(filter->lumH);

  3181.     if (filter->lumV) sws_freeVec(filter->lumV);

  3182.     if (filter->chrH) sws_freeVec(filter->chrH);

  3183.     if (filter->chrV) sws_freeVec(filter->chrV);

  3184.     av_free(filter);

  3185. }

  3186. 

  3187. 

  3188. void sws_freeContext(SwsContext *c){

  3189.     int i;

  3190.     if (!c) return;

  3191. 

  3192.     if (c->lumPixBuf)

  3193.     {

  3194.         for (i=0; i<c->vLumBufSize; i++)

  3195.             av_freep(&c->lumPixBuf[i]);

  3196.         av_freep(&c->lumPixBuf);

  3197.     }

  3198. 

  3199.     if (c->chrPixBuf)

  3200.     {

  3201.         for (i=0; i<c->vChrBufSize; i++)

  3202.             av_freep(&c->chrPixBuf[i]);

  3203.         av_freep(&c->chrPixBuf);

  3204.     }

  3205. 

  3206.     av_freep(&c->vLumFilter);

  3207.     av_freep(&c->vChrFilter);

  3208.     av_freep(&c->hLumFilter);

  3209.     av_freep(&c->hChrFilter);

  3210. #if HAVE_ALTIVEC

  3211.     av_freep(&c->vYCoeffsBank);

  3212.     av_freep(&c->vCCoeffsBank);

  3213. #endif

  3214. 

  3215.     av_freep(&c->vLumFilterPos);

  3216.     av_freep(&c->vChrFilterPos);

  3217.     av_freep(&c->hLumFilterPos);

  3218.     av_freep(&c->hChrFilterPos);

  3219. 

  3220. #if ARCH_X86 && CONFIG_GPL

  3221. #ifdef MAP_ANONYMOUS

  3222.     if (c->funnyYCode ) munmap(c->funnyYCode , MAX_FUNNY_CODE_SIZE);

  3223.     if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);

  3224. #elif HAVE_VIRTUALALLOC

  3225.     if (c->funnyYCode ) VirtualFree(c->funnyYCode , MAX_FUNNY_CODE_SIZE, MEM_RELEASE);

  3226.     if (c->funnyUVCode) VirtualFree(c->funnyUVCode, MAX_FUNNY_CODE_SIZE, MEM_RELEASE);

  3227. #else

  3228.     av_free(c->funnyYCode );

  3229.     av_free(c->funnyUVCode);

  3230. #endif

  3231.     c->funnyYCode=NULL;

  3232.     c->funnyUVCode=NULL;

  3233. #endif /* ARCH_X86 && CONFIG_GPL */

  3234. 

  3235.     av_freep(&c->lumMmx2Filter);

  3236.     av_freep(&c->chrMmx2Filter);

  3237.     av_freep(&c->lumMmx2FilterPos);

  3238.     av_freep(&c->chrMmx2FilterPos);

  3239.     av_freep(&c->yuvTable);

  3240. 

  3241.     av_free(c);

  3242. }

  3243. 

  3244. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  3245.                                         int srcW, int srcH, enum PixelFormat srcFormat,

  3246.                                         int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  3247.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)

  3248. {

  3249.     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};

  3250. 

  3251.     if (!param)

  3252.         param = default_param;

  3253. 

  3254.     if (context) {

  3255.         if (context->srcW != srcW || context->srcH != srcH ||

  3256.             context->srcFormat != srcFormat ||

  3257.             context->dstW != dstW || context->dstH != dstH ||

  3258.             context->dstFormat != dstFormat || context->flags != flags ||

  3259.             context->param[0] != param[0] || context->param[1] != param[1])

  3260.         {

  3261.             sws_freeContext(context);

  3262.             context = NULL;

  3263.         }

  3264.     }

  3265.     if (!context) {

  3266.         return sws_getContext(srcW, srcH, srcFormat,

  3267.                               dstW, dstH, dstFormat, flags,

  3268.                               srcFilter, dstFilter, param);

  3269.     }

  3270.     return context;

  3271. }