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FFmpeg/libswscale/swscale.c

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  1. /*

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

  3.  *

  4.  * This file is part of FFmpeg.

  5.  *

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

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

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

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

  10.  *

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

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

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

  14.  * GNU General Public License for more details.

  15.  *

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

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

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

  19.  *

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

  21.  * under the LGPL license too

  22.  */

  23. 

  24. /*

  25.   supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR24, BGR16, BGR15, RGB32, 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 didnt 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. #include <inttypes.h>

  58. #include <string.h>

  59. #include <math.h>

  60. #include <stdio.h>

  61. #include <unistd.h>

  62. #include "config.h"

  63. #include <assert.h>

  64. #ifdef HAVE_SYS_MMAN_H

  65. #include <sys/mman.h>

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

  67. #define MAP_ANONYMOUS MAP_ANON

  68. #endif

  69. #endif

  70. #include "swscale.h"

  71. #include "swscale_internal.h"

  72. #include "x86_cpu.h"

  73. #include "bswap.h"

  74. #include "rgb2rgb.h"

  75. #include "libavcodec/opt.h"

  76. 

  77. #undef MOVNTQ

  78. #undef PAVGB

  79. 

  80. //#undef HAVE_MMX2

  81. //#define HAVE_3DNOW

  82. //#undef HAVE_MMX

  83. //#undef ARCH_X86

  84. //#define WORDS_BIGENDIAN

  85. #define DITHER1XBPP

  86. 

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

  88. 

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

  90. 

  91. #ifdef MP_DEBUG

  92. #define ASSERT(x) assert(x);

  93. #else

  94. #define ASSERT(x) ;

  95. #endif

  96. 

  97. #ifdef M_PI

  98. #define PI M_PI

  99. #else

  100. #define PI 3.14159265358979323846

  101. #endif

  102. 

  103. #define isSupportedIn(x)    (       \

  104.            (x)==PIX_FMT_YUV420P     \

  105.         || (x)==PIX_FMT_YUYV422     \

  106.         || (x)==PIX_FMT_UYVY422     \

  107.         || (x)==PIX_FMT_RGB32       \

  108.         || (x)==PIX_FMT_BGR24       \

  109.         || (x)==PIX_FMT_BGR565      \

  110.         || (x)==PIX_FMT_BGR555      \

  111.         || (x)==PIX_FMT_BGR32       \

  112.         || (x)==PIX_FMT_RGB24       \

  113.         || (x)==PIX_FMT_RGB565      \

  114.         || (x)==PIX_FMT_RGB555      \

  115.         || (x)==PIX_FMT_GRAY8       \

  116.         || (x)==PIX_FMT_YUV410P     \

  117.         || (x)==PIX_FMT_GRAY16BE    \

  118.         || (x)==PIX_FMT_GRAY16LE    \

  119.         || (x)==PIX_FMT_YUV444P     \

  120.         || (x)==PIX_FMT_YUV422P     \

  121.         || (x)==PIX_FMT_YUV411P     \

  122.         || (x)==PIX_FMT_PAL8        \

  123.         || (x)==PIX_FMT_BGR8        \

  124.         || (x)==PIX_FMT_RGB8        \

  125.         || (x)==PIX_FMT_BGR4_BYTE   \

  126.         || (x)==PIX_FMT_RGB4_BYTE   \

  127.         || (x)==PIX_FMT_YUV440P     \

  128.     )

  129. #define isSupportedOut(x)   (       \

  130.            (x)==PIX_FMT_YUV420P     \

  131.         || (x)==PIX_FMT_YUYV422     \

  132.         || (x)==PIX_FMT_UYVY422     \

  133.         || (x)==PIX_FMT_YUV444P     \

  134.         || (x)==PIX_FMT_YUV422P     \

  135.         || (x)==PIX_FMT_YUV411P     \

  136.         || isRGB(x)                 \

  137.         || isBGR(x)                 \

  138.         || (x)==PIX_FMT_NV12        \

  139.         || (x)==PIX_FMT_NV21        \

  140.         || (x)==PIX_FMT_GRAY16BE    \

  141.         || (x)==PIX_FMT_GRAY16LE    \

  142.         || (x)==PIX_FMT_GRAY8       \

  143.         || (x)==PIX_FMT_YUV410P     \

  144.     )

  145. #define isPacked(x)         (       \

  146.            (x)==PIX_FMT_PAL8        \

  147.         || (x)==PIX_FMT_YUYV422     \

  148.         || (x)==PIX_FMT_UYVY422     \

  149.         || isRGB(x)                 \

  150.         || isBGR(x)                 \

  151.     )

  152. 

  153. #define RGB2YUV_SHIFT 16

  154. #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))

  155. #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))

  156. #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))

  157. #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))

  158. #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))

  159. #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))

  160. #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))

  161. #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))

  162. #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))

  163. 

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

  165. 

  166. /*

  167. NOTES

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

  169. 

  170. TODO

  171. more intelligent misalignment avoidance for the horizontal scaler

  172. write special vertical cubic upscale version

  173. Optimize C code (yv12 / minmax)

  174. add support for packed pixel yuv input & output

  175. add support for Y8 output

  176. optimize bgr24 & bgr32

  177. add BGR4 output support

  178. write special BGR->BGR scaler

  179. */

  180. 

  181. #if defined(ARCH_X86) && defined (CONFIG_GPL)

  182. static uint64_t attribute_used __attribute__((aligned(8))) bF8=       0xF8F8F8F8F8F8F8F8LL;

  183. static uint64_t attribute_used __attribute__((aligned(8))) bFC=       0xFCFCFCFCFCFCFCFCLL;

  184. static uint64_t                __attribute__((aligned(8))) w10=       0x0010001000100010LL;

  185. static uint64_t attribute_used __attribute__((aligned(8))) w02=       0x0002000200020002LL;

  186. static uint64_t attribute_used __attribute__((aligned(8))) bm00001111=0x00000000FFFFFFFFLL;

  187. static uint64_t attribute_used __attribute__((aligned(8))) bm00000111=0x0000000000FFFFFFLL;

  188. static uint64_t attribute_used __attribute__((aligned(8))) bm11111000=0xFFFFFFFFFF000000LL;

  189. static uint64_t attribute_used __attribute__((aligned(8))) bm01010101=0x00FF00FF00FF00FFLL;

  190. 

  191. static volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;

  192. static volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;

  193. static volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;

  194. static volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;

  195. 

  196. static uint64_t __attribute__((aligned(8))) dither4[2]={

  197.         0x0103010301030103LL,

  198.         0x0200020002000200LL,};

  199. 

  200. static uint64_t __attribute__((aligned(8))) dither8[2]={

  201.         0x0602060206020602LL,

  202.         0x0004000400040004LL,};

  203. 

  204. static uint64_t                __attribute__((aligned(8))) b16Mask=   0x001F001F001F001FLL;

  205. static uint64_t attribute_used __attribute__((aligned(8))) g16Mask=   0x07E007E007E007E0LL;

  206. static uint64_t attribute_used __attribute__((aligned(8))) r16Mask=   0xF800F800F800F800LL;

  207. static uint64_t                __attribute__((aligned(8))) b15Mask=   0x001F001F001F001FLL;

  208. static uint64_t attribute_used __attribute__((aligned(8))) g15Mask=   0x03E003E003E003E0LL;

  209. static uint64_t attribute_used __attribute__((aligned(8))) r15Mask=   0x7C007C007C007C00LL;

  210. 

  211. static uint64_t attribute_used __attribute__((aligned(8))) M24A=      0x00FF0000FF0000FFLL;

  212. static uint64_t attribute_used __attribute__((aligned(8))) M24B=      0xFF0000FF0000FF00LL;

  213. static uint64_t attribute_used __attribute__((aligned(8))) M24C=      0x0000FF0000FF0000LL;

  214. 

  215. #ifdef FAST_BGR2YV12

  216. static const uint64_t bgr2YCoeff   attribute_used __attribute__((aligned(8))) = 0x000000210041000DULL;

  217. static const uint64_t bgr2UCoeff   attribute_used __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;

  218. static const uint64_t bgr2VCoeff   attribute_used __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;

  219. #else

  220. static const uint64_t bgr2YCoeff   attribute_used __attribute__((aligned(8))) = 0x000020E540830C8BULL;

  221. static const uint64_t bgr2UCoeff   attribute_used __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;

  222. static const uint64_t bgr2VCoeff   attribute_used __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;

  223. #endif /* FAST_BGR2YV12 */

  224. static const uint64_t bgr2YOffset  attribute_used __attribute__((aligned(8))) = 0x1010101010101010ULL;

  225. static const uint64_t bgr2UVOffset attribute_used __attribute__((aligned(8))) = 0x8080808080808080ULL;

  226. static const uint64_t w1111        attribute_used __attribute__((aligned(8))) = 0x0001000100010001ULL;

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

  228. 

  229. // clipping helper table for C implementations:

  230. static unsigned char clip_table[768];

  231. 

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

  233. 

  234. extern const uint8_t dither_2x2_4[2][8];

  235. extern const uint8_t dither_2x2_8[2][8];

  236. extern const uint8_t dither_8x8_32[8][8];

  237. extern const uint8_t dither_8x8_73[8][8];

  238. extern const uint8_t dither_8x8_220[8][8];

  239. 

  240. static const char * sws_context_to_name(void * ptr) {

  241.     return "swscaler";

  242. }

  243. 

  244. #define OFFSET(x) offsetof(SwsContext, x)

  245. #define DEFAULT 0

  246. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

  247. 

  248. static const AVOption options[] = {

  249.     { "sws_flags", "scaler/cpu flags", OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, VE, "sws_flags" },

  250.     { "fast_bilinear", "fast bilinear", 0, FF_OPT_TYPE_CONST, SWS_FAST_BILINEAR, INT_MIN, INT_MAX, VE, "sws_flags" },

  251.     { "bilinear", "bilinear", 0, FF_OPT_TYPE_CONST, SWS_BILINEAR, INT_MIN, INT_MAX, VE, "sws_flags" },

  252.     { "bicubic", "bicubic", 0, FF_OPT_TYPE_CONST, SWS_BICUBIC, INT_MIN, INT_MAX, VE, "sws_flags" },

  253.     { "experimental", "experimental", 0, FF_OPT_TYPE_CONST, SWS_X, INT_MIN, INT_MAX, VE, "sws_flags" },

  254.     { "neighbor", "nearest neighbor", 0, FF_OPT_TYPE_CONST, SWS_POINT, INT_MIN, INT_MAX, VE, "sws_flags" },

  255.     { "area", "averaging area", 0, FF_OPT_TYPE_CONST, SWS_AREA, INT_MIN, INT_MAX, VE, "sws_flags" },

  256.     { "bicublin", "luma bicubic, chroma bilinear", 0, FF_OPT_TYPE_CONST, SWS_BICUBLIN, INT_MIN, INT_MAX, VE, "sws_flags" },

  257.     { "gauss", "gaussian", 0, FF_OPT_TYPE_CONST, SWS_GAUSS, INT_MIN, INT_MAX, VE, "sws_flags" },

  258.     { "sinc", "sinc", 0, FF_OPT_TYPE_CONST, SWS_SINC, INT_MIN, INT_MAX, VE, "sws_flags" },

  259.     { "lanczos", "lanczos", 0, FF_OPT_TYPE_CONST, SWS_LANCZOS, INT_MIN, INT_MAX, VE, "sws_flags" },

  260.     { "spline", "natural bicubic spline", 0, FF_OPT_TYPE_CONST, SWS_SPLINE, INT_MIN, INT_MAX, VE, "sws_flags" },

  261.     { "print_info", "print info", 0, FF_OPT_TYPE_CONST, SWS_PRINT_INFO, INT_MIN, INT_MAX, VE, "sws_flags" },

  262.     { "accurate_rnd", "accurate rounding", 0, FF_OPT_TYPE_CONST, SWS_ACCURATE_RND, INT_MIN, INT_MAX, VE, "sws_flags" },

  263.     { "mmx", "MMX SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_MMX, INT_MIN, INT_MAX, VE, "sws_flags" },

  264.     { "mmx2", "MMX2 SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_MMX2, INT_MIN, INT_MAX, VE, "sws_flags" },

  265.     { "3dnow", "3DNOW SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_3DNOW, INT_MIN, INT_MAX, VE, "sws_flags" },

  266.     { "altivec", "AltiVec SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_ALTIVEC, INT_MIN, INT_MAX, VE, "sws_flags" },

  267.     { "bfin", "Blackfin SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_BFIN, INT_MIN, INT_MAX, VE, "sws_flags" },

  268.     { "full_chroma_int", "full chroma interpolation", 0 , FF_OPT_TYPE_CONST, SWS_FULL_CHR_H_INT, INT_MIN, INT_MAX, VE, "sws_flags" },

  269.     { "full_chroma_inp", "full chroma input", 0 , FF_OPT_TYPE_CONST, SWS_FULL_CHR_H_INP, INT_MIN, INT_MAX, VE, "sws_flags" },

  270.     { NULL }

  271. };

  272. 

  273. #undef VE

  274. #undef DEFAULT

  275. 

  276. static AVClass sws_context_class = { "SWScaler", sws_context_to_name, options };

  277. 

  278. char *sws_format_name(enum PixelFormat format)

  279. {

  280.     switch (format) {

  281.         case PIX_FMT_YUV420P:

  282.             return "yuv420p";

  283.         case PIX_FMT_YUYV422:

  284.             return "yuyv422";

  285.         case PIX_FMT_RGB24:

  286.             return "rgb24";

  287.         case PIX_FMT_BGR24:

  288.             return "bgr24";

  289.         case PIX_FMT_YUV422P:

  290.             return "yuv422p";

  291.         case PIX_FMT_YUV444P:

  292.             return "yuv444p";

  293.         case PIX_FMT_RGB32:

  294.             return "rgb32";

  295.         case PIX_FMT_YUV410P:

  296.             return "yuv410p";

  297.         case PIX_FMT_YUV411P:

  298.             return "yuv411p";

  299.         case PIX_FMT_RGB565:

  300.             return "rgb565";

  301.         case PIX_FMT_RGB555:

  302.             return "rgb555";

  303.         case PIX_FMT_GRAY16BE:

  304.             return "gray16be";

  305.         case PIX_FMT_GRAY16LE:

  306.             return "gray16le";

  307.         case PIX_FMT_GRAY8:

  308.             return "gray8";

  309.         case PIX_FMT_MONOWHITE:

  310.             return "mono white";

  311.         case PIX_FMT_MONOBLACK:

  312.             return "mono black";

  313.         case PIX_FMT_PAL8:

  314.             return "Palette";

  315.         case PIX_FMT_YUVJ420P:

  316.             return "yuvj420p";

  317.         case PIX_FMT_YUVJ422P:

  318.             return "yuvj422p";

  319.         case PIX_FMT_YUVJ444P:

  320.             return "yuvj444p";

  321.         case PIX_FMT_XVMC_MPEG2_MC:

  322.             return "xvmc_mpeg2_mc";

  323.         case PIX_FMT_XVMC_MPEG2_IDCT:

  324.             return "xvmc_mpeg2_idct";

  325.         case PIX_FMT_UYVY422:

  326.             return "uyvy422";

  327.         case PIX_FMT_UYYVYY411:

  328.             return "uyyvyy411";

  329.         case PIX_FMT_RGB32_1:

  330.             return "rgb32x";

  331.         case PIX_FMT_BGR32_1:

  332.             return "bgr32x";

  333.         case PIX_FMT_BGR32:

  334.             return "bgr32";

  335.         case PIX_FMT_BGR565:

  336.             return "bgr565";

  337.         case PIX_FMT_BGR555:

  338.             return "bgr555";

  339.         case PIX_FMT_BGR8:

  340.             return "bgr8";

  341.         case PIX_FMT_BGR4:

  342.             return "bgr4";

  343.         case PIX_FMT_BGR4_BYTE:

  344.             return "bgr4 byte";

  345.         case PIX_FMT_RGB8:

  346.             return "rgb8";

  347.         case PIX_FMT_RGB4:

  348.             return "rgb4";

  349.         case PIX_FMT_RGB4_BYTE:

  350.             return "rgb4 byte";

  351.         case PIX_FMT_NV12:

  352.             return "nv12";

  353.         case PIX_FMT_NV21:

  354.             return "nv21";

  355.         case PIX_FMT_YUV440P:

  356.             return "yuv440p";

  357.         default:

  358.             return "Unknown format";

  359.     }

  360. }

  361. 

  362. #if defined(ARCH_X86) && defined (CONFIG_GPL)

  363. void in_asm_used_var_warning_killer()

  364. {

  365.     volatile int i= bF8+bFC+w10+

  366.     bm00001111+bm00000111+bm11111000+b16Mask+g16Mask+r16Mask+b15Mask+g15Mask+r15Mask+

  367.     M24A+M24B+M24C+w02 + b5Dither+g5Dither+r5Dither+g6Dither+dither4[0]+dither8[0]+bm01010101;

  368.     if (i) i=0;

  369. }

  370. #endif

  371. 

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

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

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

  375. {

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

  377.     int i;

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

  379.     {

  380.         int val=1<<18;

  381.         int j;

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

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

  384. 

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

  386.     }

  387. 

  388.     if (uDest != NULL)

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

  390.         {

  391.             int u=1<<18;

  392.             int v=1<<18;

  393.             int j;

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

  395.             {

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

  397.                 v += chrSrc[j][i + 2048] * chrFilter[j];

  398.             }

  399. 

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

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

  402.         }

  403. }

  404. 

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

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

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

  408. {

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

  410.     int i;

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

  412.     {

  413.         int val=1<<18;

  414.         int j;

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

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

  417. 

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

  419.     }

  420. 

  421.     if (uDest == NULL)

  422.         return;

  423. 

  424.     if (dstFormat == PIX_FMT_NV12)

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

  426.         {

  427.             int u=1<<18;

  428.             int v=1<<18;

  429.             int j;

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

  431.             {

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

  433.                 v += chrSrc[j][i + 2048] * chrFilter[j];

  434.             }

  435. 

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

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

  438.         }

  439.     else

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

  441.         {

  442.             int u=1<<18;

  443.             int v=1<<18;

  444.             int j;

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

  446.             {

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

  448.                 v += chrSrc[j][i + 2048] * chrFilter[j];

  449.             }

  450. 

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

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

  453.         }

  454. }

  455. 

  456. #define YSCALE_YUV_2_PACKEDX_C(type) \

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

  458.         int j;\

  459.         int Y1 = 1<<18;\

  460.         int Y2 = 1<<18;\

  461.         int U  = 1<<18;\

  462.         int V  = 1<<18;\

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

  464.         const int i2= 2*i;\

  465.         \

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

  467.         {\

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

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

  470.         }\

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

  472.         {\

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

  474.             V += chrSrc[j][i+2048] * chrFilter[j];\

  475.         }\

  476.         Y1>>=19;\

  477.         Y2>>=19;\

  478.         U >>=19;\

  479.         V >>=19;\

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

  481.         {\

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

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

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

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

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

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

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

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

  490.         }

  491. 

  492. #define YSCALE_YUV_2_RGBX_C(type) \

  493.     YSCALE_YUV_2_PACKEDX_C(type)  \

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

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

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

  497. 

  498. #define YSCALE_YUV_2_PACKED2_C   \

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

  500.         const int i2= 2*i;       \

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

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

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

  504.         int V= (uvbuf0[i+2048]*uvalpha1+uvbuf1[i+2048]*uvalpha)>>19;  \

  505. 

  506. #define YSCALE_YUV_2_RGB2_C(type) \

  507.     YSCALE_YUV_2_PACKED2_C\

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

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

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

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

  512. 

  513. #define YSCALE_YUV_2_PACKED1_C \

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

  515.         const int i2= 2*i;\

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

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

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

  519.         int V= (uvbuf1[i+2048])>>7;\

  520. 

  521. #define YSCALE_YUV_2_RGB1_C(type) \

  522.     YSCALE_YUV_2_PACKED1_C\

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

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

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

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

  527. 

  528. #define YSCALE_YUV_2_PACKED1B_C \

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

  530.         const int i2= 2*i;\

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

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

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

  534.         int V= (uvbuf0[i+2048] + uvbuf1[i+2048])>>8;\

  535. 

  536. #define YSCALE_YUV_2_RGB1B_C(type) \

  537.     YSCALE_YUV_2_PACKED1B_C\

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

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

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

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

  542. 

  543. #define YSCALE_YUV_2_ANYRGB_C(func, func2)\

  544.     switch(c->dstFormat)\

  545.     {\

  546.     case PIX_FMT_RGB32:\

  547.     case PIX_FMT_BGR32:\

  548.         func(uint32_t)\

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

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

  551.         }                \

  552.         break;\

  553.     case PIX_FMT_RGB24:\

  554.         func(uint8_t)\

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

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

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

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

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

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

  561.             dest+=6;\

  562.         }\

  563.         break;\

  564.     case PIX_FMT_BGR24:\

  565.         func(uint8_t)\

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

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

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

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

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

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

  572.             dest+=6;\

  573.         }\

  574.         break;\

  575.     case PIX_FMT_RGB565:\

  576.     case PIX_FMT_BGR565:\

  577.         {\

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

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

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

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

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

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

  584.             func(uint16_t)\

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

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

  587.             }\

  588.         }\

  589.         break;\

  590.     case PIX_FMT_RGB555:\

  591.     case PIX_FMT_BGR555:\

  592.         {\

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

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

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

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

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

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

  599.             func(uint16_t)\

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

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

  602.             }\

  603.         }\

  604.         break;\

  605.     case PIX_FMT_RGB8:\

  606.     case PIX_FMT_BGR8:\

  607.         {\

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

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

  610.             func(uint8_t)\

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

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

  613.             }\

  614.         }\

  615.         break;\

  616.     case PIX_FMT_RGB4:\

  617.     case PIX_FMT_BGR4:\

  618.         {\

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

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

  621.             func(uint8_t)\

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

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

  624.             }\

  625.         }\

  626.         break;\

  627.     case PIX_FMT_RGB4_BYTE:\

  628.     case PIX_FMT_BGR4_BYTE:\

  629.         {\

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

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

  632.             func(uint8_t)\

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

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

  635.             }\

  636.         }\

  637.         break;\

  638.     case PIX_FMT_MONOBLACK:\

  639.         {\

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

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

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

  643.                 int acc;\

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

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

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

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

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

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

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

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

  652.                 ((uint8_t*)dest)[0]= acc;\

  653.                 dest++;\

  654.             }\

  655. \

  656. /*\

  657. ((uint8_t*)dest)-= dstW>>4;\

  658. {\

  659.             int acc=0;\

  660.             int left=0;\

  661.             static int top[1024];\

  662.             static int last_new[1024][1024];\

  663.             static int last_in3[1024][1024];\

  664.             static int drift[1024][1024];\

  665.             int topLeft=0;\

  666.             int shift=0;\

  667.             int count=0;\

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

  669.             int error_new=0;\

  670.             int error_in3=0;\

  671.             int f=0;\

  672.             \

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

  674.                 int in= ((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19);\

  675.                 int in2 = (76309 * (in - 16) + 32768) >> 16;\

  676.                 int in3 = (in2 < 0) ? 0 : ((in2 > 255) ? 255 : in2);\

  677.                 int old= (left*7 + topLeft + top[i]*5 + top[i+1]*3)/20 + in3\

  678.                          + (last_new[y][i] - in3)*f/256;\

  679.                 int new= old> 128 ? 255 : 0;\

  680. \

  681.                 error_new+= FFABS(last_new[y][i] - new);\

  682.                 error_in3+= FFABS(last_in3[y][i] - in3);\

  683.                 f= error_new - error_in3*4;\

  684.                 if (f<0) f=0;\

  685.                 if (f>256) f=256;\

  686. \

  687.                 topLeft= top[i];\

  688.                 left= top[i]= old - new;\

  689.                 last_new[y][i]= new;\

  690.                 last_in3[y][i]= in3;\

  691. \

  692.                 acc+= acc + (new&1);\

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

  694.                     ((uint8_t*)dest)[0]= acc;\

  695.                     ((uint8_t*)dest)++;\

  696.                 }\

  697.             }\

  698. }\

  699. */\

  700.         }\

  701.         break;\

  702.     case PIX_FMT_YUYV422:\

  703.         func2\

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

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

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

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

  708.         }                \

  709.         break;\

  710.     case PIX_FMT_UYVY422:\

  711.         func2\

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

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

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

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

  716.         }                \

  717.         break;\

  718.     }\

  719. 

  720. 

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

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

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

  724. {

  725.     int i;

  726.     switch(c->dstFormat)

  727.     {

  728.     case PIX_FMT_BGR32:

  729.     case PIX_FMT_RGB32:

  730.         YSCALE_YUV_2_RGBX_C(uint32_t)

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

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

  733.         }

  734.         break;

  735.     case PIX_FMT_RGB24:

  736.         YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

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

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

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

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

  743.             dest+=6;

  744.         }

  745.         break;

  746.     case PIX_FMT_BGR24:

  747.         YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

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

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

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

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

  754.             dest+=6;

  755.         }

  756.         break;

  757.     case PIX_FMT_RGB565:

  758.     case PIX_FMT_BGR565:

  759.         {

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

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

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

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

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

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

  766.             YSCALE_YUV_2_RGBX_C(uint16_t)

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

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

  769.             }

  770.         }

  771.         break;

  772.     case PIX_FMT_RGB555:

  773.     case PIX_FMT_BGR555:

  774.         {

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

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

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

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

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

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

  781.             YSCALE_YUV_2_RGBX_C(uint16_t)

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

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

  784.             }

  785.         }

  786.         break;

  787.     case PIX_FMT_RGB8:

  788.     case PIX_FMT_BGR8:

  789.         {

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

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

  792.             YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

  795.             }

  796.         }

  797.         break;

  798.     case PIX_FMT_RGB4:

  799.     case PIX_FMT_BGR4:

  800.         {

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

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

  803.             YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

  806.             }

  807.         }

  808.         break;

  809.     case PIX_FMT_RGB4_BYTE:

  810.     case PIX_FMT_BGR4_BYTE:

  811.         {

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

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

  814.             YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

  817.             }

  818.         }

  819.         break;

  820.     case PIX_FMT_MONOBLACK:

  821.         {

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

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

  824.             int acc=0;

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

  826.                 int j;

  827.                 int Y1=1<<18;

  828.                 int Y2=1<<18;

  829. 

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

  831.                 {

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

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

  834.                 }

  835.                 Y1>>=19;

  836.                 Y2>>=19;

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

  838.                 {

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

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

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

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

  843.                 }

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

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

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

  847.                     ((uint8_t*)dest)[0]= acc;

  848.                     dest++;

  849.                 }

  850.             }

  851.         }

  852.         break;

  853.     case PIX_FMT_YUYV422:

  854.         YSCALE_YUV_2_PACKEDX_C(void)

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

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

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

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

  859.         }

  860.         break;

  861.     case PIX_FMT_UYVY422:

  862.         YSCALE_YUV_2_PACKEDX_C(void)

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

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

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

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

  867.         }

  868.         break;

  869.     }

  870. }

  871. 

  872. 

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

  874. //Plain C versions

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

  876. #define COMPILE_C

  877. #endif

  878. 

  879. #ifdef ARCH_POWERPC

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

  881. #define COMPILE_ALTIVEC

  882. #endif //HAVE_ALTIVEC

  883. #endif //ARCH_POWERPC

  884. 

  885. #if defined(ARCH_X86)

  886. 

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

  888. #define COMPILE_MMX

  889. #endif

  890. 

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

  892. #define COMPILE_MMX2

  893. #endif

  894. 

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

  896. #define COMPILE_3DNOW

  897. #endif

  898. #endif //ARCH_X86 || ARCH_X86_64

  899. 

  900. #undef HAVE_MMX

  901. #undef HAVE_MMX2

  902. #undef HAVE_3DNOW

  903. 

  904. #ifdef COMPILE_C

  905. #undef HAVE_MMX

  906. #undef HAVE_MMX2

  907. #undef HAVE_3DNOW

  908. #undef HAVE_ALTIVEC

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

  910. #include "swscale_template.c"

  911. #endif

  912. 

  913. #ifdef ARCH_POWERPC

  914. #ifdef COMPILE_ALTIVEC

  915. #undef RENAME

  916. #define HAVE_ALTIVEC

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

  918. #include "swscale_template.c"

  919. #endif

  920. #endif //ARCH_POWERPC

  921. 

  922. #if defined(ARCH_X86)

  923. 

  924. //X86 versions

  925. /*

  926. #undef RENAME

  927. #undef HAVE_MMX

  928. #undef HAVE_MMX2

  929. #undef HAVE_3DNOW

  930. #define ARCH_X86

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

  932. #include "swscale_template.c"

  933. */

  934. //MMX versions

  935. #ifdef COMPILE_MMX

  936. #undef RENAME

  937. #define HAVE_MMX

  938. #undef HAVE_MMX2

  939. #undef HAVE_3DNOW

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

  941. #include "swscale_template.c"

  942. #endif

  943. 

  944. //MMX2 versions

  945. #ifdef COMPILE_MMX2

  946. #undef RENAME

  947. #define HAVE_MMX

  948. #define HAVE_MMX2

  949. #undef HAVE_3DNOW

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

  951. #include "swscale_template.c"

  952. #endif

  953. 

  954. //3DNOW versions

  955. #ifdef COMPILE_3DNOW

  956. #undef RENAME

  957. #define HAVE_MMX

  958. #undef HAVE_MMX2

  959. #define HAVE_3DNOW

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

  961. #include "swscale_template.c"

  962. #endif

  963. 

  964. #endif //ARCH_X86 || ARCH_X86_64

  965. 

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

  967. 

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

  969. {

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

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

  972.     else                return getSplineCoeff(        0.0,

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

  974.                                                     c + 3.0*d,

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

  976.                                             dist-1.0);

  977. }

  978. 

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

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

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

  982. {

  983.     int i;

  984.     int filterSize;

  985.     int filter2Size;

  986.     int minFilterSize;

  987.     double *filter=NULL;

  988.     double *filter2=NULL;

  989. #if defined(ARCH_X86)

  990.     if (flags & SWS_CPU_CAPS_MMX)

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

  992. #endif

  993. 

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

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

  996. 

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

  998.     {

  999.         int i;

  1000.         filterSize= 1;

  1001.         filter= av_malloc(dstW*sizeof(double)*filterSize);

  1002.         for (i=0; i<dstW*filterSize; i++) filter[i]=0;

  1003. 

  1004.         for (i=0; i<dstW; i++)

  1005.         {

  1006.             filter[i*filterSize]=1;

  1007.             (*filterPos)[i]=i;

  1008.         }

  1009. 

  1010.     }

  1011.     else if (flags&SWS_POINT) // lame looking point sampling mode

  1012.     {

  1013.         int i;

  1014.         int xDstInSrc;

  1015.         filterSize= 1;

  1016.         filter= av_malloc(dstW*sizeof(double)*filterSize);

  1017. 

  1018.         xDstInSrc= xInc/2 - 0x8000;

  1019.         for (i=0; i<dstW; i++)

  1020.         {

  1021.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1022. 

  1023.             (*filterPos)[i]= xx;

  1024.             filter[i]= 1.0;

  1025.             xDstInSrc+= xInc;

  1026.         }

  1027.     }

  1028.     else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale

  1029.     {

  1030.         int i;

  1031.         int xDstInSrc;

  1032.         if      (flags&SWS_BICUBIC) filterSize= 4;

  1033.         else if (flags&SWS_X      ) filterSize= 4;

  1034.         else                        filterSize= 2; // SWS_BILINEAR / SWS_AREA

  1035.         filter= av_malloc(dstW*sizeof(double)*filterSize);

  1036. 

  1037.         xDstInSrc= xInc/2 - 0x8000;

  1038.         for (i=0; i<dstW; i++)

  1039.         {

  1040.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1041.             int j;

  1042. 

  1043.             (*filterPos)[i]= xx;

  1044.                 //Bilinear upscale / linear interpolate / Area averaging

  1045.                 for (j=0; j<filterSize; j++)

  1046.                 {

  1047.                     double d= FFABS((xx<<16) - xDstInSrc)/(double)(1<<16);

  1048.                     double coeff= 1.0 - d;

  1049.                     if (coeff<0) coeff=0;

  1050.                     filter[i*filterSize + j]= coeff;

  1051.                     xx++;

  1052.                 }

  1053.             xDstInSrc+= xInc;

  1054.         }

  1055.     }

  1056.     else

  1057.     {

  1058.         double xDstInSrc;

  1059.         double sizeFactor, filterSizeInSrc;

  1060.         const double xInc1= (double)xInc / (double)(1<<16);

  1061. 

  1062.         if      (flags&SWS_BICUBIC)      sizeFactor=  4.0;

  1063.         else if (flags&SWS_X)            sizeFactor=  8.0;

  1064.         else if (flags&SWS_AREA)         sizeFactor=  1.0; //downscale only, for upscale it is bilinear

  1065.         else if (flags&SWS_GAUSS)        sizeFactor=  8.0;   // infinite ;)

  1066.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? 2.0*param[0] : 6.0;

  1067.         else if (flags&SWS_SINC)         sizeFactor= 20.0; // infinite ;)

  1068.         else if (flags&SWS_SPLINE)       sizeFactor= 20.0;  // infinite ;)

  1069.         else if (flags&SWS_BILINEAR)     sizeFactor=  2.0;

  1070.         else {

  1071.             sizeFactor= 0.0; //GCC warning killer

  1072.             ASSERT(0)

  1073.         }

  1074. 

  1075.         if (xInc1 <= 1.0)       filterSizeInSrc= sizeFactor; // upscale

  1076.         else                    filterSizeInSrc= sizeFactor*srcW / (double)dstW;

  1077. 

  1078.         filterSize= (int)ceil(1 + filterSizeInSrc); // will be reduced later if possible

  1079.         if (filterSize > srcW-2) filterSize=srcW-2;

  1080. 

  1081.         filter= av_malloc(dstW*sizeof(double)*filterSize);

  1082. 

  1083.         xDstInSrc= xInc1 / 2.0 - 0.5;

  1084.         for (i=0; i<dstW; i++)

  1085.         {

  1086.             int xx= (int)(xDstInSrc - (filterSize-1)*0.5 + 0.5);

  1087.             int j;

  1088.             (*filterPos)[i]= xx;

  1089.             for (j=0; j<filterSize; j++)

  1090.             {

  1091.                 double d= FFABS(xx - xDstInSrc)/filterSizeInSrc*sizeFactor;

  1092.                 double coeff;

  1093.                 if (flags & SWS_BICUBIC)

  1094.                 {

  1095.                     double B= param[0] != SWS_PARAM_DEFAULT ? param[0] : 0.0;

  1096.                     double C= param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6;

  1097. 

  1098.                     if (d<1.0)

  1099.                         coeff = (12-9*B-6*C)*d*d*d + (-18+12*B+6*C)*d*d + 6-2*B;

  1100.                     else if (d<2.0)

  1101.                         coeff = (-B-6*C)*d*d*d + (6*B+30*C)*d*d + (-12*B-48*C)*d +8*B+24*C;

  1102.                     else

  1103.                         coeff=0.0;

  1104.                 }

  1105. /*                else if (flags & SWS_X)

  1106.                 {

  1107.                     double p= param ? param*0.01 : 0.3;

  1108.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1109.                     coeff*= pow(2.0, - p*d*d);

  1110.                 }*/

  1111.                 else if (flags & SWS_X)

  1112.                 {

  1113.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1114. 

  1115.                     if (d<1.0)

  1116.                         coeff = cos(d*PI);

  1117.                     else

  1118.                         coeff=-1.0;

  1119.                     if (coeff<0.0)      coeff= -pow(-coeff, A);

  1120.                     else                coeff=  pow( coeff, A);

  1121.                     coeff= coeff*0.5 + 0.5;

  1122.                 }

  1123.                 else if (flags & SWS_AREA)

  1124.                 {

  1125.                     double srcPixelSize= 1.0/xInc1;

  1126.                     if      (d + srcPixelSize/2 < 0.5) coeff= 1.0;

  1127.                     else if (d - srcPixelSize/2 < 0.5) coeff= (0.5-d)/srcPixelSize + 0.5;

  1128.                     else coeff=0.0;

  1129.                 }

  1130.                 else if (flags & SWS_GAUSS)

  1131.                 {

  1132.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1133.                     coeff = pow(2.0, - p*d*d);

  1134.                 }

  1135.                 else if (flags & SWS_SINC)

  1136.                 {

  1137.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1138.                 }

  1139.                 else if (flags & SWS_LANCZOS)

  1140.                 {

  1141.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1142.                     coeff = d ? sin(d*PI)*sin(d*PI/p)/(d*d*PI*PI/p) : 1.0;

  1143.                     if (d>p) coeff=0;

  1144.                 }

  1145.                 else if (flags & SWS_BILINEAR)

  1146.                 {

  1147.                     coeff= 1.0 - d;

  1148.                     if (coeff<0) coeff=0;

  1149.                 }

  1150.                 else if (flags & SWS_SPLINE)

  1151.                 {

  1152.                     double p=-2.196152422706632;

  1153.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, d);

  1154.                 }

  1155.                 else {

  1156.                     coeff= 0.0; //GCC warning killer

  1157.                     ASSERT(0)

  1158.                 }

  1159. 

  1160.                 filter[i*filterSize + j]= coeff;

  1161.                 xx++;

  1162.             }

  1163.             xDstInSrc+= xInc1;

  1164.         }

  1165.     }

  1166. 

  1167.     /* apply src & dst Filter to filter -> filter2

  1168.        av_free(filter);

  1169.     */

  1170.     ASSERT(filterSize>0)

  1171.     filter2Size= filterSize;

  1172.     if (srcFilter) filter2Size+= srcFilter->length - 1;

  1173.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1174.     ASSERT(filter2Size>0)

  1175.     filter2= av_malloc(filter2Size*dstW*sizeof(double));

  1176. 

  1177.     for (i=0; i<dstW; i++)

  1178.     {

  1179.         int j;

  1180.         SwsVector scaleFilter;

  1181.         SwsVector *outVec;

  1182. 

  1183.         scaleFilter.coeff= filter + i*filterSize;

  1184.         scaleFilter.length= filterSize;

  1185. 

  1186.         if (srcFilter) outVec= sws_getConvVec(srcFilter, &scaleFilter);

  1187.         else           outVec= &scaleFilter;

  1188. 

  1189.         ASSERT(outVec->length == filter2Size)

  1190.         //FIXME dstFilter

  1191. 

  1192.         for (j=0; j<outVec->length; j++)

  1193.         {

  1194.             filter2[i*filter2Size + j]= outVec->coeff[j];

  1195.         }

  1196. 

  1197.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1198. 

  1199.         if (outVec != &scaleFilter) sws_freeVec(outVec);

  1200.     }

  1201.     av_free(filter); filter=NULL;

  1202. 

  1203.     /* try to reduce the filter-size (step1 find size and shift left) */

  1204.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1205.     minFilterSize= 0;

  1206.     for (i=dstW-1; i>=0; i--)

  1207.     {

  1208.         int min= filter2Size;

  1209.         int j;

  1210.         double cutOff=0.0;

  1211. 

  1212.         /* get rid off near zero elements on the left by shifting left */

  1213.         for (j=0; j<filter2Size; j++)

  1214.         {

  1215.             int k;

  1216.             cutOff += FFABS(filter2[i*filter2Size]);

  1217. 

  1218.             if (cutOff > SWS_MAX_REDUCE_CUTOFF) break;

  1219. 

  1220.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1221.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1222. 

  1223.             // Move filter coeffs left

  1224.             for (k=1; k<filter2Size; k++)

  1225.                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1226.             filter2[i*filter2Size + k - 1]= 0.0;

  1227.             (*filterPos)[i]++;

  1228.         }

  1229. 

  1230.         cutOff=0.0;

  1231.         /* count near zeros on the right */

  1232.         for (j=filter2Size-1; j>0; j--)

  1233.         {

  1234.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1235. 

  1236.             if (cutOff > SWS_MAX_REDUCE_CUTOFF) break;

  1237.             min--;

  1238.         }

  1239. 

  1240.         if (min>minFilterSize) minFilterSize= min;

  1241.     }

  1242. 

  1243.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1244.         // we can handle the special case 4,

  1245.         // so we don't want to go to the full 8

  1246.         if (minFilterSize < 5)

  1247.             filterAlign = 4;

  1248. 

  1249.         // we really don't want to waste our time

  1250.         // doing useless computation, so fall-back on

  1251.         // the scalar C code for very small filter.

  1252.         // vectorizing is worth it only if you have

  1253.         // decent-sized vector.

  1254.         if (minFilterSize < 3)

  1255.             filterAlign = 1;

  1256.     }

  1257. 

  1258.     if (flags & SWS_CPU_CAPS_MMX) {

  1259.         // special case for unscaled vertical filtering

  1260.         if (minFilterSize == 1 && filterAlign == 2)

  1261.             filterAlign= 1;

  1262.     }

  1263. 

  1264.     ASSERT(minFilterSize > 0)

  1265.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1266.     ASSERT(filterSize > 0)

  1267.     filter= av_malloc(filterSize*dstW*sizeof(double));

  1268.     if (filterSize >= MAX_FILTER_SIZE)

  1269.         return -1;

  1270.     *outFilterSize= filterSize;

  1271. 

  1272.     if (flags&SWS_PRINT_INFO)

  1273.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1274.     /* try to reduce the filter-size (step2 reduce it) */

  1275.     for (i=0; i<dstW; i++)

  1276.     {

  1277.         int j;

  1278. 

  1279.         for (j=0; j<filterSize; j++)

  1280.         {

  1281.             if (j>=filter2Size) filter[i*filterSize + j]= 0.0;

  1282.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1283.         }

  1284.     }

  1285.     av_free(filter2); filter2=NULL;

  1286. 

  1287. 

  1288.     //FIXME try to align filterpos if possible

  1289. 

  1290.     //fix borders

  1291.     for (i=0; i<dstW; i++)

  1292.     {

  1293.         int j;

  1294.         if ((*filterPos)[i] < 0)

  1295.         {

  1296.             // Move filter coeffs left to compensate for filterPos

  1297.             for (j=1; j<filterSize; j++)

  1298.             {

  1299.                 int left= FFMAX(j + (*filterPos)[i], 0);

  1300.                 filter[i*filterSize + left] += filter[i*filterSize + j];

  1301.                 filter[i*filterSize + j]=0;

  1302.             }

  1303.             (*filterPos)[i]= 0;

  1304.         }

  1305. 

  1306.         if ((*filterPos)[i] + filterSize > srcW)

  1307.         {

  1308.             int shift= (*filterPos)[i] + filterSize - srcW;

  1309.             // Move filter coeffs right to compensate for filterPos

  1310.             for (j=filterSize-2; j>=0; j--)

  1311.             {

  1312.                 int right= FFMIN(j + shift, filterSize-1);

  1313.                 filter[i*filterSize +right] += filter[i*filterSize +j];

  1314.                 filter[i*filterSize +j]=0;

  1315.             }

  1316.             (*filterPos)[i]= srcW - filterSize;

  1317.         }

  1318.     }

  1319. 

  1320.     // Note the +1 is for the MMXscaler which reads over the end

  1321.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1322.     *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));

  1323. 

  1324.     /* Normalize & Store in outFilter */

  1325.     for (i=0; i<dstW; i++)

  1326.     {

  1327.         int j;

  1328.         double error=0;

  1329.         double sum=0;

  1330.         double scale= one;

  1331. 

  1332.         for (j=0; j<filterSize; j++)

  1333.         {

  1334.             sum+= filter[i*filterSize + j];

  1335.         }

  1336.         scale/= sum;

  1337.         for (j=0; j<*outFilterSize; j++)

  1338.         {

  1339.             double v= filter[i*filterSize + j]*scale + error;

  1340.             int intV= floor(v + 0.5);

  1341.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1342.             error = v - intV;

  1343.         }

  1344.     }

  1345. 

  1346.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1347.     for (i=0; i<*outFilterSize; i++)

  1348.     {

  1349.         int j= dstW*(*outFilterSize);

  1350.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1351.     }

  1352. 

  1353.     av_free(filter);

  1354.     return 0;

  1355. }

  1356. 

  1357. #ifdef COMPILE_MMX2

  1358. static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1359. {

  1360.     uint8_t *fragmentA;

  1361.     long imm8OfPShufW1A;

  1362.     long imm8OfPShufW2A;

  1363.     long fragmentLengthA;

  1364.     uint8_t *fragmentB;

  1365.     long imm8OfPShufW1B;

  1366.     long imm8OfPShufW2B;

  1367.     long fragmentLengthB;

  1368.     int fragmentPos;

  1369. 

  1370.     int xpos, i;

  1371. 

  1372.     // create an optimized horizontal scaling routine

  1373. 

  1374.     //code fragment

  1375. 

  1376.     asm volatile(

  1377.         "jmp                         9f                 \n\t"

  1378.     // Begin

  1379.         "0:                                             \n\t"

  1380.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1381.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1382.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1383.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1384.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1385.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1386.         "1:                                             \n\t"

  1387.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1388.         "2:                                             \n\t"

  1389.         "psubw                    %%mm1, %%mm0          \n\t"

  1390.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1391.         "pmullw                   %%mm3, %%mm0          \n\t"

  1392.         "psllw                       $7, %%mm1          \n\t"

  1393.         "paddw                    %%mm1, %%mm0          \n\t"

  1394. 

  1395.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1396. 

  1397.         "add                         $8, %%"REG_a"      \n\t"

  1398.     // End

  1399.         "9:                                             \n\t"

  1400. //        "int $3                                         \n\t"

  1401.         "lea                         0b, %0             \n\t"

  1402.         "lea                         1b, %1             \n\t"

  1403.         "lea                         2b, %2             \n\t"

  1404.         "dec                         %1                 \n\t"

  1405.         "dec                         %2                 \n\t"

  1406.         "sub                         %0, %1             \n\t"

  1407.         "sub                         %0, %2             \n\t"

  1408.         "lea                         9b, %3             \n\t"

  1409.         "sub                         %0, %3             \n\t"

  1410. 

  1411. 

  1412.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1413.         "=r" (fragmentLengthA)

  1414.     );

  1415. 

  1416.     asm volatile(

  1417.         "jmp                         9f                 \n\t"

  1418.     // Begin

  1419.         "0:                                             \n\t"

  1420.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1421.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1422.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1423.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1424.         "1:                                             \n\t"

  1425.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1426.         "2:                                             \n\t"

  1427.         "psubw                    %%mm1, %%mm0          \n\t"

  1428.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1429.         "pmullw                   %%mm3, %%mm0          \n\t"

  1430.         "psllw                       $7, %%mm1          \n\t"

  1431.         "paddw                    %%mm1, %%mm0          \n\t"

  1432. 

  1433.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1434. 

  1435.         "add                         $8, %%"REG_a"      \n\t"

  1436.     // End

  1437.         "9:                                             \n\t"

  1438. //        "int                       $3                   \n\t"

  1439.         "lea                         0b, %0             \n\t"

  1440.         "lea                         1b, %1             \n\t"

  1441.         "lea                         2b, %2             \n\t"

  1442.         "dec                         %1                 \n\t"

  1443.         "dec                         %2                 \n\t"

  1444.         "sub                         %0, %1             \n\t"

  1445.         "sub                         %0, %2             \n\t"

  1446.         "lea                         9b, %3             \n\t"

  1447.         "sub                         %0, %3             \n\t"

  1448. 

  1449. 

  1450.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1451.         "=r" (fragmentLengthB)

  1452.     );

  1453. 

  1454.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1455.     fragmentPos=0;

  1456. 

  1457.     for (i=0; i<dstW/numSplits; i++)

  1458.     {

  1459.         int xx=xpos>>16;

  1460. 

  1461.         if ((i&3) == 0)

  1462.         {

  1463.             int a=0;

  1464.             int b=((xpos+xInc)>>16) - xx;

  1465.             int c=((xpos+xInc*2)>>16) - xx;

  1466.             int d=((xpos+xInc*3)>>16) - xx;

  1467. 

  1468.             filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;

  1469.             filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1470.             filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1471.             filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1472.             filterPos[i/2]= xx;

  1473. 

  1474.             if (d+1<4)

  1475.             {

  1476.                 int maxShift= 3-(d+1);

  1477.                 int shift=0;

  1478. 

  1479.                 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);

  1480. 

  1481.                 funnyCode[fragmentPos + imm8OfPShufW1B]=

  1482.                     (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);

  1483.                 funnyCode[fragmentPos + imm8OfPShufW2B]=

  1484.                     a | (b<<2) | (c<<4) | (d<<6);

  1485. 

  1486.                 if (i+3>=dstW) shift=maxShift; //avoid overread

  1487.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1488. 

  1489.                 if (shift && i>=shift)

  1490.                 {

  1491.                     funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;

  1492.                     funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;

  1493.                     filterPos[i/2]-=shift;

  1494.                 }

  1495. 

  1496.                 fragmentPos+= fragmentLengthB;

  1497.             }

  1498.             else

  1499.             {

  1500.                 int maxShift= 3-d;

  1501.                 int shift=0;

  1502. 

  1503.                 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);

  1504. 

  1505.                 funnyCode[fragmentPos + imm8OfPShufW1A]=

  1506.                 funnyCode[fragmentPos + imm8OfPShufW2A]=

  1507.                     a | (b<<2) | (c<<4) | (d<<6);

  1508. 

  1509.                 if (i+4>=dstW) shift=maxShift; //avoid overread

  1510.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align

  1511. 

  1512.                 if (shift && i>=shift)

  1513.                 {

  1514.                     funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;

  1515.                     funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;

  1516.                     filterPos[i/2]-=shift;

  1517.                 }

  1518. 

  1519.                 fragmentPos+= fragmentLengthA;

  1520.             }

  1521. 

  1522.             funnyCode[fragmentPos]= RET;

  1523.         }

  1524.         xpos+=xInc;

  1525.     }

  1526.     filterPos[i/2]= xpos>>16; // needed to jump to the next part

  1527. }

  1528. #endif /* COMPILE_MMX2 */

  1529. 

  1530. static void globalInit(void){

  1531.     // generating tables:

  1532.     int i;

  1533.     for (i=0; i<768; i++){

  1534.         int c= av_clip_uint8(i-256);

  1535.         clip_table[i]=c;

  1536.     }

  1537. }

  1538. 

  1539. static SwsFunc getSwsFunc(int flags){

  1540. 

  1541. #if defined(RUNTIME_CPUDETECT) && defined (CONFIG_GPL)

  1542. #if defined(ARCH_X86)

  1543.     // ordered per speed fasterst first

  1544.     if (flags & SWS_CPU_CAPS_MMX2)

  1545.         return swScale_MMX2;

  1546.     else if (flags & SWS_CPU_CAPS_3DNOW)

  1547.         return swScale_3DNow;

  1548.     else if (flags & SWS_CPU_CAPS_MMX)

  1549.         return swScale_MMX;

  1550.     else

  1551.         return swScale_C;

  1552. 

  1553. #else

  1554. #ifdef ARCH_POWERPC

  1555.     if (flags & SWS_CPU_CAPS_ALTIVEC)

  1556.         return swScale_altivec;

  1557.     else

  1558.         return swScale_C;

  1559. #endif

  1560.     return swScale_C;

  1561. #endif /* defined(ARCH_X86) */

  1562. #else //RUNTIME_CPUDETECT

  1563. #ifdef HAVE_MMX2

  1564.     return swScale_MMX2;

  1565. #elif defined (HAVE_3DNOW)

  1566.     return swScale_3DNow;

  1567. #elif defined (HAVE_MMX)

  1568.     return swScale_MMX;

  1569. #elif defined (HAVE_ALTIVEC)

  1570.     return swScale_altivec;

  1571. #else

  1572.     return swScale_C;

  1573. #endif

  1574. #endif //!RUNTIME_CPUDETECT

  1575. }

  1576. 

  1577. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1578.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1579.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1580.     /* Copy Y plane */

  1581.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1582.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1583.     else

  1584.     {

  1585.         int i;

  1586.         uint8_t *srcPtr= src[0];

  1587.         uint8_t *dstPtr= dst;

  1588.         for (i=0; i<srcSliceH; i++)

  1589.         {

  1590.             memcpy(dstPtr, srcPtr, c->srcW);

  1591.             srcPtr+= srcStride[0];

  1592.             dstPtr+= dstStride[0];

  1593.         }

  1594.     }

  1595.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1596.     if (c->dstFormat == PIX_FMT_NV12)

  1597.         interleaveBytes( src[1],src[2],dst,c->srcW/2,srcSliceH/2,srcStride[1],srcStride[2],dstStride[0] );

  1598.     else

  1599.         interleaveBytes( src[2],src[1],dst,c->srcW/2,srcSliceH/2,srcStride[2],srcStride[1],dstStride[0] );

  1600. 

  1601.     return srcSliceH;

  1602. }

  1603. 

  1604. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1605.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1606.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1607. 

  1608.     yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );

  1609. 

  1610.     return srcSliceH;

  1611. }

  1612. 

  1613. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1614.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1615.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1616. 

  1617.     yv12touyvy( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );

  1618. 

  1619.     return srcSliceH;

  1620. }

  1621. 

  1622. /* {RGB,BGR}{15,16,24,32} -> {RGB,BGR}{15,16,24,32} */

  1623. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1624.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  1625.     const int srcFormat= c->srcFormat;

  1626.     const int dstFormat= c->dstFormat;

  1627.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  1628.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  1629.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1630.     const int dstId= fmt_depth(dstFormat) >> 2;

  1631.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1632. 

  1633.     /* BGR -> BGR */

  1634.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  1635.        || (isRGB(srcFormat) && isRGB(dstFormat))){

  1636.         switch(srcId | (dstId<<4)){

  1637.         case 0x34: conv= rgb16to15; break;

  1638.         case 0x36: conv= rgb24to15; break;

  1639.         case 0x38: conv= rgb32to15; break;

  1640.         case 0x43: conv= rgb15to16; break;

  1641.         case 0x46: conv= rgb24to16; break;

  1642.         case 0x48: conv= rgb32to16; break;

  1643.         case 0x63: conv= rgb15to24; break;

  1644.         case 0x64: conv= rgb16to24; break;

  1645.         case 0x68: conv= rgb32to24; break;

  1646.         case 0x83: conv= rgb15to32; break;

  1647.         case 0x84: conv= rgb16to32; break;

  1648.         case 0x86: conv= rgb24to32; break;

  1649.         default: av_log(c, AV_LOG_ERROR, "swScaler: internal error %s -> %s converter\n",

  1650.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1651.         }

  1652.     }else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  1653.              || (isRGB(srcFormat) && isBGR(dstFormat))){

  1654.         switch(srcId | (dstId<<4)){

  1655.         case 0x33: conv= rgb15tobgr15; break;

  1656.         case 0x34: conv= rgb16tobgr15; break;

  1657.         case 0x36: conv= rgb24tobgr15; break;

  1658.         case 0x38: conv= rgb32tobgr15; break;

  1659.         case 0x43: conv= rgb15tobgr16; break;

  1660.         case 0x44: conv= rgb16tobgr16; break;

  1661.         case 0x46: conv= rgb24tobgr16; break;

  1662.         case 0x48: conv= rgb32tobgr16; break;

  1663.         case 0x63: conv= rgb15tobgr24; break;

  1664.         case 0x64: conv= rgb16tobgr24; break;

  1665.         case 0x66: conv= rgb24tobgr24; break;

  1666.         case 0x68: conv= rgb32tobgr24; break;

  1667.         case 0x83: conv= rgb15tobgr32; break;

  1668.         case 0x84: conv= rgb16tobgr32; break;

  1669.         case 0x86: conv= rgb24tobgr32; break;

  1670.         case 0x88: conv= rgb32tobgr32; break;

  1671.         default: av_log(c, AV_LOG_ERROR, "swScaler: internal error %s -> %s converter\n",

  1672.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1673.         }

  1674.     }else{

  1675.         av_log(c, AV_LOG_ERROR, "swScaler: internal error %s -> %s converter\n",

  1676.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1677.     }

  1678. 

  1679.     if(conv)

  1680.     {

  1681.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp)

  1682.             conv(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1683.         else

  1684.         {

  1685.             int i;

  1686.             uint8_t *srcPtr= src[0];

  1687.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1688. 

  1689.             for (i=0; i<srcSliceH; i++)

  1690.             {

  1691.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1692.                 srcPtr+= srcStride[0];

  1693.                 dstPtr+= dstStride[0];

  1694.             }

  1695.         }

  1696.     }

  1697.     return srcSliceH;

  1698. }

  1699. 

  1700. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1701.                               int srcSliceH, uint8_t* dst[], int dstStride[]){

  1702. 

  1703.     rgb24toyv12(

  1704.         src[0],

  1705.         dst[0]+ srcSliceY    *dstStride[0],

  1706.         dst[1]+(srcSliceY>>1)*dstStride[1],

  1707.         dst[2]+(srcSliceY>>1)*dstStride[2],

  1708.         c->srcW, srcSliceH,

  1709.         dstStride[0], dstStride[1], srcStride[0]);

  1710.     return srcSliceH;

  1711. }

  1712. 

  1713. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1714.                              int srcSliceH, uint8_t* dst[], int dstStride[]){

  1715.     int i;

  1716. 

  1717.     /* copy Y */

  1718.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  1719.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  1720.     else{

  1721.         uint8_t *srcPtr= src[0];

  1722.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1723. 

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

  1725.         {

  1726.             memcpy(dstPtr, srcPtr, c->srcW);

  1727.             srcPtr+= srcStride[0];

  1728.             dstPtr+= dstStride[0];

  1729.         }

  1730.     }

  1731. 

  1732.     if (c->dstFormat==PIX_FMT_YUV420P){

  1733.         planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);

  1734.         planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);

  1735.     }else{

  1736.         planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);

  1737.         planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);

  1738.     }

  1739.     return srcSliceH;

  1740. }

  1741. 

  1742. /* unscaled copy like stuff (assumes nearly identical formats) */

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

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

  1745. 

  1746.     if (isPacked(c->srcFormat))

  1747.     {

  1748.         if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1749.             memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1750.         else

  1751.         {

  1752.             int i;

  1753.             uint8_t *srcPtr= src[0];

  1754.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1755.             int length=0;

  1756. 

  1757.             /* universal length finder */

  1758.             while(length+c->srcW <= FFABS(dstStride[0])

  1759.                && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  1760.             ASSERT(length!=0);

  1761. 

  1762.             for (i=0; i<srcSliceH; i++)

  1763.             {

  1764.                 memcpy(dstPtr, srcPtr, length);

  1765.                 srcPtr+= srcStride[0];

  1766.                 dstPtr+= dstStride[0];

  1767.             }

  1768.         }

  1769.     }

  1770.     else

  1771.     { /* Planar YUV or gray */

  1772.         int plane;

  1773.         for (plane=0; plane<3; plane++)

  1774.         {

  1775.             int length= plane==0 ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1776.             int y=      plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1777.             int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1778. 

  1779.             if ((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)

  1780.             {

  1781.                 if (!isGray(c->dstFormat))

  1782.                     memset(dst[plane], 128, dstStride[plane]*height);

  1783.             }

  1784.             else

  1785.             {

  1786.                 if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  1787.                     memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  1788.                 else

  1789.                 {

  1790.                     int i;

  1791.                     uint8_t *srcPtr= src[plane];

  1792.                     uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  1793.                     for (i=0; i<height; i++)

  1794.                     {

  1795.                         memcpy(dstPtr, srcPtr, length);

  1796.                         srcPtr+= srcStride[plane];

  1797.                         dstPtr+= dstStride[plane];

  1798.                     }

  1799.                 }

  1800.             }

  1801.         }

  1802.     }

  1803.     return srcSliceH;

  1804. }

  1805. 

  1806. static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1807.                         int srcSliceH, uint8_t* dst[], int dstStride[]){

  1808. 

  1809.     int length= c->srcW;

  1810.     int y=      srcSliceY;

  1811.     int height= srcSliceH;

  1812.     int i, j;

  1813.     uint8_t *srcPtr= src[0];

  1814.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  1815. 

  1816.     if (!isGray(c->dstFormat)){

  1817.         int height= -((-srcSliceH)>>c->chrDstVSubSample);

  1818.         memset(dst[1], 128, dstStride[1]*height);

  1819.         memset(dst[2], 128, dstStride[2]*height);

  1820.     }

  1821.     if (c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;

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

  1823.     {

  1824.         for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  1825.         srcPtr+= srcStride[0];

  1826.         dstPtr+= dstStride[0];

  1827.     }

  1828.     return srcSliceH;

  1829. }

  1830. 

  1831. static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1832.                         int srcSliceH, uint8_t* dst[], int dstStride[]){

  1833. 

  1834.     int length= c->srcW;

  1835.     int y=      srcSliceY;

  1836.     int height= srcSliceH;

  1837.     int i, j;

  1838.     uint8_t *srcPtr= src[0];

  1839.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  1840.     for (i=0; i<height; i++)

  1841.     {

  1842.         for (j=0; j<length; j++)

  1843.         {

  1844.             dstPtr[j<<1] = srcPtr[j];

  1845.             dstPtr[(j<<1)+1] = srcPtr[j];

  1846.         }

  1847.         srcPtr+= srcStride[0];

  1848.         dstPtr+= dstStride[0];

  1849.     }

  1850.     return srcSliceH;

  1851. }

  1852. 

  1853. static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1854.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  1855. 

  1856.     int length= c->srcW;

  1857.     int y=      srcSliceY;

  1858.     int height= srcSliceH;

  1859.     int i, j;

  1860.     uint16_t *srcPtr= src[0];

  1861.     uint16_t *dstPtr= dst[0] + dstStride[0]*y/2;

  1862.     for (i=0; i<height; i++)

  1863.     {

  1864.         for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);

  1865.         srcPtr+= srcStride[0]/2;

  1866.         dstPtr+= dstStride[0]/2;

  1867.     }

  1868.     return srcSliceH;

  1869. }

  1870. 

  1871. 

  1872. static void getSubSampleFactors(int *h, int *v, int format){

  1873.     switch(format){

  1874.     case PIX_FMT_UYVY422:

  1875.     case PIX_FMT_YUYV422:

  1876.         *h=1;

  1877.         *v=0;

  1878.         break;

  1879.     case PIX_FMT_YUV420P:

  1880.     case PIX_FMT_GRAY16BE:

  1881.     case PIX_FMT_GRAY16LE:

  1882.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  1883.     case PIX_FMT_NV12:

  1884.     case PIX_FMT_NV21:

  1885.         *h=1;

  1886.         *v=1;

  1887.         break;

  1888.     case PIX_FMT_YUV440P:

  1889.         *h=0;

  1890.         *v=1;

  1891.         break;

  1892.     case PIX_FMT_YUV410P:

  1893.         *h=2;

  1894.         *v=2;

  1895.         break;

  1896.     case PIX_FMT_YUV444P:

  1897.         *h=0;

  1898.         *v=0;

  1899.         break;

  1900.     case PIX_FMT_YUV422P:

  1901.         *h=1;

  1902.         *v=0;

  1903.         break;

  1904.     case PIX_FMT_YUV411P:

  1905.         *h=2;

  1906.         *v=0;

  1907.         break;

  1908.     default:

  1909.         *h=0;

  1910.         *v=0;

  1911.         break;

  1912.     }

  1913. }

  1914. 

  1915. static uint16_t roundToInt16(int64_t f){

  1916.     int r= (f + (1<<15))>>16;

  1917.          if (r<-0x7FFF) return 0x8000;

  1918.     else if (r> 0x7FFF) return 0x7FFF;

  1919.     else                return r;

  1920. }

  1921. 

  1922. /**

  1923.  * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]

  1924.  * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235

  1925.  * @return -1 if not supported

  1926.  */

  1927. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){

  1928.     int64_t crv =  inv_table[0];

  1929.     int64_t cbu =  inv_table[1];

  1930.     int64_t cgu = -inv_table[2];

  1931.     int64_t cgv = -inv_table[3];

  1932.     int64_t cy  = 1<<16;

  1933.     int64_t oy  = 0;

  1934. 

  1935.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  1936.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  1937.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  1938. 

  1939.     c->brightness= brightness;

  1940.     c->contrast  = contrast;

  1941.     c->saturation= saturation;

  1942.     c->srcRange  = srcRange;

  1943.     c->dstRange  = dstRange;

  1944. 

  1945.     c->uOffset=   0x0400040004000400LL;

  1946.     c->vOffset=   0x0400040004000400LL;

  1947. 

  1948.     if (!srcRange){

  1949.         cy= (cy*255) / 219;

  1950.         oy= 16<<16;

  1951.     }else{

  1952.         crv= (crv*224) / 255;

  1953.         cbu= (cbu*224) / 255;

  1954.         cgu= (cgu*224) / 255;

  1955.         cgv= (cgv*224) / 255;

  1956.     }

  1957. 

  1958.     cy = (cy *contrast             )>>16;

  1959.     crv= (crv*contrast * saturation)>>32;

  1960.     cbu= (cbu*contrast * saturation)>>32;

  1961.     cgu= (cgu*contrast * saturation)>>32;

  1962.     cgv= (cgv*contrast * saturation)>>32;

  1963. 

  1964.     oy -= 256*brightness;

  1965. 

  1966.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  1967.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  1968.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  1969.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  1970.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  1971.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  1972. 

  1973.     yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  1974.     //FIXME factorize

  1975. 

  1976. #ifdef COMPILE_ALTIVEC

  1977.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  1978.         yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);

  1979. #endif

  1980.     return 0;

  1981. }

  1982. 

  1983. /**

  1984.  * @return -1 if not supported

  1985.  */

  1986. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){

  1987.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  1988. 

  1989.     *inv_table = c->srcColorspaceTable;

  1990.     *table     = c->dstColorspaceTable;

  1991.     *srcRange  = c->srcRange;

  1992.     *dstRange  = c->dstRange;

  1993.     *brightness= c->brightness;

  1994.     *contrast  = c->contrast;

  1995.     *saturation= c->saturation;

  1996. 

  1997.     return 0;

  1998. }

  1999. 

  2000. static int handle_jpeg(int *format)

  2001. {

  2002.     switch (*format) {

  2003.         case PIX_FMT_YUVJ420P:

  2004.             *format = PIX_FMT_YUV420P;

  2005.             return 1;

  2006.         case PIX_FMT_YUVJ422P:

  2007.             *format = PIX_FMT_YUV422P;

  2008.             return 1;

  2009.         case PIX_FMT_YUVJ444P:

  2010.             *format = PIX_FMT_YUV444P;

  2011.             return 1;

  2012.         case PIX_FMT_YUVJ440P:

  2013.             *format = PIX_FMT_YUV440P;

  2014.             return 1;

  2015.         default:

  2016.             return 0;

  2017.     }

  2018. }

  2019. 

  2020. SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,

  2021.                            SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){

  2022. 

  2023.     SwsContext *c;

  2024.     int i;

  2025.     int usesVFilter, usesHFilter;

  2026.     int unscaled, needsDither;

  2027.     int srcRange, dstRange;

  2028.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2029. #if defined(ARCH_X86)

  2030.     if (flags & SWS_CPU_CAPS_MMX)

  2031.         asm volatile("emms\n\t"::: "memory");

  2032. #endif

  2033. 

  2034. #if !defined(RUNTIME_CPUDETECT) || !defined (CONFIG_GPL) //ensure that the flags match the compiled variant if cpudetect is off

  2035.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2036. #ifdef HAVE_MMX2

  2037.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2038. #elif defined (HAVE_3DNOW)

  2039.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2040. #elif defined (HAVE_MMX)

  2041.     flags |= SWS_CPU_CAPS_MMX;

  2042. #elif defined (HAVE_ALTIVEC)

  2043.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2044. #elif defined (ARCH_BFIN)

  2045.     flags |= SWS_CPU_CAPS_BFIN;

  2046. #endif

  2047. #endif /* RUNTIME_CPUDETECT */

  2048.     if (clip_table[512] != 255) globalInit();

  2049.     if (rgb15to16 == NULL) sws_rgb2rgb_init(flags);

  2050. 

  2051.     unscaled = (srcW == dstW && srcH == dstH);

  2052.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2053.         && (fmt_depth(dstFormat))<24

  2054.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2055. 

  2056.     srcRange = handle_jpeg(&srcFormat);

  2057.     dstRange = handle_jpeg(&dstFormat);

  2058. 

  2059.     if (!isSupportedIn(srcFormat))

  2060.     {

  2061.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input format\n", sws_format_name(srcFormat));

  2062.         return NULL;

  2063.     }

  2064.     if (!isSupportedOut(dstFormat))

  2065.     {

  2066.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output format\n", sws_format_name(dstFormat));

  2067.         return NULL;

  2068.     }

  2069. 

  2070.     /* sanity check */

  2071.     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

  2072.     {

  2073.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2074.                srcW, srcH, dstW, dstH);

  2075.         return NULL;

  2076.     }

  2077. 

  2078.     if (!dstFilter) dstFilter= &dummyFilter;

  2079.     if (!srcFilter) srcFilter= &dummyFilter;

  2080. 

  2081.     c= av_mallocz(sizeof(SwsContext));

  2082. 

  2083.     c->av_class = &sws_context_class;

  2084.     c->srcW= srcW;

  2085.     c->srcH= srcH;

  2086.     c->dstW= dstW;

  2087.     c->dstH= dstH;

  2088.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2089.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2090.     c->flags= flags;

  2091.     c->dstFormat= dstFormat;

  2092.     c->srcFormat= srcFormat;

  2093.     c->vRounder= 4* 0x0001000100010001ULL;

  2094. 

  2095.     usesHFilter= usesVFilter= 0;

  2096.     if (dstFilter->lumV!=NULL && dstFilter->lumV->length>1) usesVFilter=1;

  2097.     if (dstFilter->lumH!=NULL && dstFilter->lumH->length>1) usesHFilter=1;

  2098.     if (dstFilter->chrV!=NULL && dstFilter->chrV->length>1) usesVFilter=1;

  2099.     if (dstFilter->chrH!=NULL && dstFilter->chrH->length>1) usesHFilter=1;

  2100.     if (srcFilter->lumV!=NULL && srcFilter->lumV->length>1) usesVFilter=1;

  2101.     if (srcFilter->lumH!=NULL && srcFilter->lumH->length>1) usesHFilter=1;

  2102.     if (srcFilter->chrV!=NULL && srcFilter->chrV->length>1) usesVFilter=1;

  2103.     if (srcFilter->chrH!=NULL && srcFilter->chrH->length>1) usesHFilter=1;

  2104. 

  2105.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2106.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2107. 

  2108.     // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation

  2109.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2110. 

  2111.     // drop some chroma lines if the user wants it

  2112.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2113.     c->chrSrcVSubSample+= c->vChrDrop;

  2114. 

  2115.     // drop every 2. pixel for chroma calculation unless user wants full chroma

  2116.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2117.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2118.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2119.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE)

  2120.         c->chrSrcHSubSample=1;

  2121. 

  2122.     if (param){

  2123.         c->param[0] = param[0];

  2124.         c->param[1] = param[1];

  2125.     }else{

  2126.         c->param[0] =

  2127.         c->param[1] = SWS_PARAM_DEFAULT;

  2128.     }

  2129. 

  2130.     c->chrIntHSubSample= c->chrDstHSubSample;

  2131.     c->chrIntVSubSample= c->chrSrcVSubSample;

  2132. 

  2133.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2134.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2135.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2136.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2137.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2138. 

  2139.     sws_setColorspaceDetails(c, Inverse_Table_6_9[SWS_CS_DEFAULT], srcRange, Inverse_Table_6_9[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);

  2140. 

  2141.     /* unscaled special Cases */

  2142.     if (unscaled && !usesHFilter && !usesVFilter)

  2143.     {

  2144.         /* yv12_to_nv12 */

  2145.         if (srcFormat == PIX_FMT_YUV420P && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))

  2146.         {

  2147.             c->swScale= PlanarToNV12Wrapper;

  2148.         }

  2149. #ifdef CONFIG_GPL

  2150.         /* yuv2bgr */

  2151.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P) && (isBGR(dstFormat) || isRGB(dstFormat)))

  2152.         {

  2153.             c->swScale= yuv2rgb_get_func_ptr(c);

  2154.         }

  2155. #endif

  2156. 

  2157.         if ( srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P )

  2158.         {

  2159.             c->swScale= yvu9toyv12Wrapper;

  2160.         }

  2161. 

  2162.         /* bgr24toYV12 */

  2163.         if (srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P)

  2164.             c->swScale= bgr24toyv12Wrapper;

  2165. 

  2166.         /* rgb/bgr -> rgb/bgr (no dither needed forms) */

  2167.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2168.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2169.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2170.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2171.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2172.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2173.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2174.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2175.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2176.            && !needsDither)

  2177.              c->swScale= rgb2rgbWrapper;

  2178. 

  2179.         /* LQ converters if -sws 0 or -sws 4*/

  2180.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){

  2181.             /* rgb/bgr -> rgb/bgr (dither needed forms) */

  2182.             if ( (isBGR(srcFormat) || isRGB(srcFormat))

  2183.               && (isBGR(dstFormat) || isRGB(dstFormat))

  2184.               && needsDither)

  2185.                 c->swScale= rgb2rgbWrapper;

  2186. 

  2187.             /* yv12_to_yuy2 */

  2188.             if (srcFormat == PIX_FMT_YUV420P &&

  2189.                 (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422))

  2190.             {

  2191.                 if (dstFormat == PIX_FMT_YUYV422)

  2192.                     c->swScale= PlanarToYuy2Wrapper;

  2193.                 else

  2194.                     c->swScale= PlanarToUyvyWrapper;

  2195.             }

  2196.         }

  2197. 

  2198. #ifdef COMPILE_ALTIVEC

  2199.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2200.             ((srcFormat == PIX_FMT_YUV420P &&

  2201.              (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422)))) {

  2202.           // unscaled YV12 -> packed YUV, we want speed

  2203.           if (dstFormat == PIX_FMT_YUYV422)

  2204.               c->swScale= yv12toyuy2_unscaled_altivec;

  2205.           else

  2206.               c->swScale= yv12touyvy_unscaled_altivec;

  2207.         }

  2208. #endif

  2209. 

  2210.         /* simple copy */

  2211.         if (  srcFormat == dstFormat

  2212.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2213.             || (isPlanarYUV(dstFormat) && isGray(srcFormat)) )

  2214.         {

  2215.             c->swScale= simpleCopy;

  2216.         }

  2217. 

  2218.         /* gray16{le,be} conversions */

  2219.         if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))

  2220.         {

  2221.             c->swScale= gray16togray;

  2222.         }

  2223.         if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))

  2224.         {

  2225.             c->swScale= graytogray16;

  2226.         }

  2227.         if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))

  2228.         {

  2229.             c->swScale= gray16swap;

  2230.         }

  2231. 

  2232. #ifdef ARCH_BFIN

  2233.         if (flags & SWS_CPU_CAPS_BFIN)

  2234.             ff_bfin_get_unscaled_swscale (c);

  2235. #endif

  2236. 

  2237.         if (c->swScale){

  2238.             if (flags&SWS_PRINT_INFO)

  2239.                 av_log(c, AV_LOG_INFO, "SwScaler: using unscaled %s -> %s special converter\n",

  2240.                                 sws_format_name(srcFormat), sws_format_name(dstFormat));

  2241.             return c;

  2242.         }

  2243.     }

  2244. 

  2245.     if (flags & SWS_CPU_CAPS_MMX2)

  2246.     {

  2247.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2248.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))

  2249.         {

  2250.             if (flags&SWS_PRINT_INFO)

  2251.                 av_log(c, AV_LOG_INFO, "SwScaler: output Width is not a multiple of 32 -> no MMX2 scaler\n");

  2252.         }

  2253.         if (usesHFilter) c->canMMX2BeUsed=0;

  2254.     }

  2255.     else

  2256.         c->canMMX2BeUsed=0;

  2257. 

  2258.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2259.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2260. 

  2261.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2262.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2263.     // n-2 is the last chrominance sample available

  2264.     // this is not perfect, but no one should notice the difference, the more correct variant

  2265.     // would be like the vertical one, but that would require some special code for the

  2266.     // first and last pixel

  2267.     if (flags&SWS_FAST_BILINEAR)

  2268.     {

  2269.         if (c->canMMX2BeUsed)

  2270.         {

  2271.             c->lumXInc+= 20;

  2272.             c->chrXInc+= 20;

  2273.         }

  2274.         //we don't use the x86asm scaler if mmx is available

  2275.         else if (flags & SWS_CPU_CAPS_MMX)

  2276.         {

  2277.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2278.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2279.         }

  2280.     }

  2281. 

  2282.     /* precalculate horizontal scaler filter coefficients */

  2283.     {

  2284.         const int filterAlign=

  2285.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2286.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2287.             1;

  2288. 

  2289.         initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2290.                    srcW      ,       dstW, filterAlign, 1<<14,

  2291.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2292.                    srcFilter->lumH, dstFilter->lumH, c->param);

  2293.         initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2294.                    c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2295.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2296.                    srcFilter->chrH, dstFilter->chrH, c->param);

  2297. 

  2298. #define MAX_FUNNY_CODE_SIZE 10000

  2299. #if defined(COMPILE_MMX2)

  2300. // can't downscale !!!

  2301.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))

  2302.         {

  2303. #ifdef MAP_ANONYMOUS

  2304.             c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2305.             c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2306. #else

  2307.             c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2308.             c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2309. #endif

  2310. 

  2311.             c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));

  2312.             c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));

  2313.             c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));

  2314.             c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));

  2315. 

  2316.             initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2317.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2318.         }

  2319. #endif /* defined(COMPILE_MMX2) */

  2320.     } // Init Horizontal stuff

  2321. 

  2322. 

  2323. 

  2324.     /* precalculate vertical scaler filter coefficients */

  2325.     {

  2326.         const int filterAlign=

  2327.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2328.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2329.             1;

  2330. 

  2331.         initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2332.                    srcH      ,        dstH, filterAlign, (1<<12)-4,

  2333.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2334.                    srcFilter->lumV, dstFilter->lumV, c->param);

  2335.         initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2336.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12)-4,

  2337.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2338.                    srcFilter->chrV, dstFilter->chrV, c->param);

  2339. 

  2340. #ifdef HAVE_ALTIVEC

  2341.         c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);

  2342.         c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);

  2343. 

  2344.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2345.             int j;

  2346.             short *p = (short *)&c->vYCoeffsBank[i];

  2347.             for (j=0;j<8;j++)

  2348.                 p[j] = c->vLumFilter[i];

  2349.         }

  2350. 

  2351.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2352.             int j;

  2353.             short *p = (short *)&c->vCCoeffsBank[i];

  2354.             for (j=0;j<8;j++)

  2355.                 p[j] = c->vChrFilter[i];

  2356.         }

  2357. #endif

  2358.     }

  2359. 

  2360.     // Calculate Buffer Sizes so that they won't run out while handling these damn slices

  2361.     c->vLumBufSize= c->vLumFilterSize;

  2362.     c->vChrBufSize= c->vChrFilterSize;

  2363.     for (i=0; i<dstH; i++)

  2364.     {

  2365.         int chrI= i*c->chrDstH / dstH;

  2366.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2367.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2368. 

  2369.         nextSlice>>= c->chrSrcVSubSample;

  2370.         nextSlice<<= c->chrSrcVSubSample;

  2371.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2372.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i   ];

  2373.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2374.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2375.     }

  2376. 

  2377.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2378.     c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2379.     c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));

  2380.     //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)

  2381.     /* align at 16 bytes for AltiVec */

  2382.     for (i=0; i<c->vLumBufSize; i++)

  2383.         c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(4000);

  2384.     for (i=0; i<c->vChrBufSize; i++)

  2385.         c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc(8000);

  2386. 

  2387.     //try to avoid drawing green stuff between the right end and the stride end

  2388.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, 8000);

  2389. 

  2390.     ASSERT(c->chrDstH <= dstH)

  2391. 

  2392.     if (flags&SWS_PRINT_INFO)

  2393.     {

  2394. #ifdef DITHER1XBPP

  2395.         char *dither= " dithered";

  2396. #else

  2397.         char *dither= "";

  2398. #endif

  2399.         if (flags&SWS_FAST_BILINEAR)

  2400.             av_log(c, AV_LOG_INFO, "SwScaler: FAST_BILINEAR scaler, ");

  2401.         else if (flags&SWS_BILINEAR)

  2402.             av_log(c, AV_LOG_INFO, "SwScaler: BILINEAR scaler, ");

  2403.         else if (flags&SWS_BICUBIC)

  2404.             av_log(c, AV_LOG_INFO, "SwScaler: BICUBIC scaler, ");

  2405.         else if (flags&SWS_X)

  2406.             av_log(c, AV_LOG_INFO, "SwScaler: Experimental scaler, ");

  2407.         else if (flags&SWS_POINT)

  2408.             av_log(c, AV_LOG_INFO, "SwScaler: Nearest Neighbor / POINT scaler, ");

  2409.         else if (flags&SWS_AREA)

  2410.             av_log(c, AV_LOG_INFO, "SwScaler: Area Averageing scaler, ");

  2411.         else if (flags&SWS_BICUBLIN)

  2412.             av_log(c, AV_LOG_INFO, "SwScaler: luma BICUBIC / chroma BILINEAR scaler, ");

  2413.         else if (flags&SWS_GAUSS)

  2414.             av_log(c, AV_LOG_INFO, "SwScaler: Gaussian scaler, ");

  2415.         else if (flags&SWS_SINC)

  2416.             av_log(c, AV_LOG_INFO, "SwScaler: Sinc scaler, ");

  2417.         else if (flags&SWS_LANCZOS)

  2418.             av_log(c, AV_LOG_INFO, "SwScaler: Lanczos scaler, ");

  2419.         else if (flags&SWS_SPLINE)

  2420.             av_log(c, AV_LOG_INFO, "SwScaler: Bicubic spline scaler, ");

  2421.         else

  2422.             av_log(c, AV_LOG_INFO, "SwScaler: ehh flags invalid?! ");

  2423. 

  2424.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2425.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  2426.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2427.         else

  2428.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  2429.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  2430. 

  2431.         if (flags & SWS_CPU_CAPS_MMX2)

  2432.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  2433.         else if (flags & SWS_CPU_CAPS_3DNOW)

  2434.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  2435.         else if (flags & SWS_CPU_CAPS_MMX)

  2436.             av_log(c, AV_LOG_INFO, "using MMX\n");

  2437.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  2438.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  2439.         else

  2440.             av_log(c, AV_LOG_INFO, "using C\n");

  2441.     }

  2442. 

  2443.     if (flags & SWS_PRINT_INFO)

  2444.     {

  2445.         if (flags & SWS_CPU_CAPS_MMX)

  2446.         {

  2447.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2448.                 av_log(c, AV_LOG_VERBOSE, "SwScaler: using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  2449.             else

  2450.             {

  2451.                 if (c->hLumFilterSize==4)

  2452.                     av_log(c, AV_LOG_VERBOSE, "SwScaler: using 4-tap MMX scaler for horizontal luminance scaling\n");

  2453.                 else if (c->hLumFilterSize==8)

  2454.                     av_log(c, AV_LOG_VERBOSE, "SwScaler: using 8-tap MMX scaler for horizontal luminance scaling\n");

  2455.                 else

  2456.                     av_log(c, AV_LOG_VERBOSE, "SwScaler: using n-tap MMX scaler for horizontal luminance scaling\n");

  2457. 

  2458.                 if (c->hChrFilterSize==4)

  2459.                     av_log(c, AV_LOG_VERBOSE, "SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling\n");

  2460.                 else if (c->hChrFilterSize==8)

  2461.                     av_log(c, AV_LOG_VERBOSE, "SwScaler: using 8-tap MMX scaler for horizontal chrominance scaling\n");

  2462.                 else

  2463.                     av_log(c, AV_LOG_VERBOSE, "SwScaler: using n-tap MMX scaler for horizontal chrominance scaling\n");

  2464.             }

  2465.         }

  2466.         else

  2467.         {

  2468. #if defined(ARCH_X86)

  2469.             av_log(c, AV_LOG_VERBOSE, "SwScaler: using X86-Asm scaler for horizontal scaling\n");

  2470. #else

  2471.             if (flags & SWS_FAST_BILINEAR)

  2472.                 av_log(c, AV_LOG_VERBOSE, "SwScaler: using FAST_BILINEAR C scaler for horizontal scaling\n");

  2473.             else

  2474.                 av_log(c, AV_LOG_VERBOSE, "SwScaler: using C scaler for horizontal scaling\n");

  2475. #endif

  2476.         }

  2477.         if (isPlanarYUV(dstFormat))

  2478.         {

  2479.             if (c->vLumFilterSize==1)

  2480.                 av_log(c, AV_LOG_VERBOSE, "SwScaler: using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2481.             else

  2482.                 av_log(c, AV_LOG_VERBOSE, "SwScaler: using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2483.         }

  2484.         else

  2485.         {

  2486.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  2487.                 av_log(c, AV_LOG_VERBOSE, "SwScaler: using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  2488.                        "SwScaler:       2-tap scaler for vertical chrominance scaling (BGR)\n",(flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2489.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  2490.                 av_log(c, AV_LOG_VERBOSE, "SwScaler: using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2491.             else

  2492.                 av_log(c, AV_LOG_VERBOSE, "SwScaler: using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2493.         }

  2494. 

  2495.         if (dstFormat==PIX_FMT_BGR24)

  2496.             av_log(c, AV_LOG_VERBOSE, "SwScaler: using %s YV12->BGR24 Converter\n",

  2497.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  2498.         else if (dstFormat==PIX_FMT_RGB32)

  2499.             av_log(c, AV_LOG_VERBOSE, "SwScaler: using %s YV12->BGR32 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2500.         else if (dstFormat==PIX_FMT_BGR565)

  2501.             av_log(c, AV_LOG_VERBOSE, "SwScaler: using %s YV12->BGR16 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2502.         else if (dstFormat==PIX_FMT_BGR555)

  2503.             av_log(c, AV_LOG_VERBOSE, "SwScaler: using %s YV12->BGR15 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2504. 

  2505.         av_log(c, AV_LOG_VERBOSE, "SwScaler: %dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  2506.     }

  2507.     if (flags & SWS_PRINT_INFO)

  2508.     {

  2509.         av_log(c, AV_LOG_DEBUG, "SwScaler:Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2510.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  2511.         av_log(c, AV_LOG_DEBUG, "SwScaler:Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2512.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  2513.     }

  2514. 

  2515.     c->swScale= getSwsFunc(flags);

  2516.     return c;

  2517. }

  2518. 

  2519. /**

  2520.  * swscale warper, so we don't need to export the SwsContext.

  2521.  * assumes planar YUV to be in YUV order instead of YVU

  2522.  */

  2523. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2524.               int srcSliceH, uint8_t* dst[], int dstStride[]){

  2525.     int i;

  2526.     uint8_t* src2[4]= {src[0], src[1], src[2]};

  2527.     uint32_t pal[256];

  2528.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  2529.         av_log(c, AV_LOG_ERROR, "swScaler: slices start in the middle!\n");

  2530.         return 0;

  2531.     }

  2532.     if (c->sliceDir == 0) {

  2533.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  2534.     }

  2535. 

  2536.     if (c->srcFormat == PIX_FMT_PAL8){

  2537.         for (i=0; i<256; i++){

  2538.             int p= ((uint32_t*)(src[1]))[i];

  2539.             int r= (p>>16)&0xFF;

  2540.             int g= (p>> 8)&0xFF;

  2541.             int b=  p     &0xFF;

  2542.             int y= av_clip_uint8(((RY*r + GY*g + BY*b)>>RGB2YUV_SHIFT) + 16 );

  2543.             int u= av_clip_uint8(((RU*r + GU*g + BU*b)>>RGB2YUV_SHIFT) + 128);

  2544.             int v= av_clip_uint8(((RV*r + GV*g + BV*b)>>RGB2YUV_SHIFT) + 128);

  2545.             pal[i]= y + (u<<8) + (v<<16);

  2546.         }

  2547.         src2[1]= pal;

  2548.     }

  2549. 

  2550.     // copy strides, so they can safely be modified

  2551.     if (c->sliceDir == 1) {

  2552.         // slices go from top to bottom

  2553.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};

  2554.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};

  2555.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);

  2556.     } else {

  2557.         // slices go from bottom to top => we flip the image internally

  2558.         uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],

  2559.                            dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],

  2560.                            dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};

  2561.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};

  2562.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};

  2563. 

  2564.         src2[0] += (srcSliceH-1)*srcStride[0];

  2565.         if (c->srcFormat != PIX_FMT_PAL8)

  2566.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  2567.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  2568. 

  2569.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  2570.     }

  2571. }

  2572. 

  2573. /**

  2574.  * swscale warper, so we don't need to export the SwsContext

  2575.  */

  2576. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2577.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  2578.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  2579. }

  2580. 

  2581. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  2582.                                 float lumaSharpen, float chromaSharpen,

  2583.                                 float chromaHShift, float chromaVShift,

  2584.                                 int verbose)

  2585. {

  2586.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  2587. 

  2588.     if (lumaGBlur!=0.0){

  2589.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  2590.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  2591.     }else{

  2592.         filter->lumH= sws_getIdentityVec();

  2593.         filter->lumV= sws_getIdentityVec();

  2594.     }

  2595. 

  2596.     if (chromaGBlur!=0.0){

  2597.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  2598.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  2599.     }else{

  2600.         filter->chrH= sws_getIdentityVec();

  2601.         filter->chrV= sws_getIdentityVec();

  2602.     }

  2603. 

  2604.     if (chromaSharpen!=0.0){

  2605.         SwsVector *id= sws_getIdentityVec();

  2606.         sws_scaleVec(filter->chrH, -chromaSharpen);

  2607.         sws_scaleVec(filter->chrV, -chromaSharpen);

  2608.         sws_addVec(filter->chrH, id);

  2609.         sws_addVec(filter->chrV, id);

  2610.         sws_freeVec(id);

  2611.     }

  2612. 

  2613.     if (lumaSharpen!=0.0){

  2614.         SwsVector *id= sws_getIdentityVec();

  2615.         sws_scaleVec(filter->lumH, -lumaSharpen);

  2616.         sws_scaleVec(filter->lumV, -lumaSharpen);

  2617.         sws_addVec(filter->lumH, id);

  2618.         sws_addVec(filter->lumV, id);

  2619.         sws_freeVec(id);

  2620.     }

  2621. 

  2622.     if (chromaHShift != 0.0)

  2623.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  2624. 

  2625.     if (chromaVShift != 0.0)

  2626.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  2627. 

  2628.     sws_normalizeVec(filter->chrH, 1.0);

  2629.     sws_normalizeVec(filter->chrV, 1.0);

  2630.     sws_normalizeVec(filter->lumH, 1.0);

  2631.     sws_normalizeVec(filter->lumV, 1.0);

  2632. 

  2633.     if (verbose) sws_printVec(filter->chrH);

  2634.     if (verbose) sws_printVec(filter->lumH);

  2635. 

  2636.     return filter;

  2637. }

  2638. 

  2639. /**

  2640.  * returns a normalized gaussian curve used to filter stuff

  2641.  * quality=3 is high quality, lowwer is lowwer quality

  2642.  */

  2643. SwsVector *sws_getGaussianVec(double variance, double quality){

  2644.     const int length= (int)(variance*quality + 0.5) | 1;

  2645.     int i;

  2646.     double *coeff= av_malloc(length*sizeof(double));

  2647.     double middle= (length-1)*0.5;

  2648.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2649. 

  2650.     vec->coeff= coeff;

  2651.     vec->length= length;

  2652. 

  2653.     for (i=0; i<length; i++)

  2654.     {

  2655.         double dist= i-middle;

  2656.         coeff[i]= exp( -dist*dist/(2*variance*variance) ) / sqrt(2*variance*PI);

  2657.     }

  2658. 

  2659.     sws_normalizeVec(vec, 1.0);

  2660. 

  2661.     return vec;

  2662. }

  2663. 

  2664. SwsVector *sws_getConstVec(double c, int length){

  2665.     int i;

  2666.     double *coeff= av_malloc(length*sizeof(double));

  2667.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2668. 

  2669.     vec->coeff= coeff;

  2670.     vec->length= length;

  2671. 

  2672.     for (i=0; i<length; i++)

  2673.         coeff[i]= c;

  2674. 

  2675.     return vec;

  2676. }

  2677. 

  2678. 

  2679. SwsVector *sws_getIdentityVec(void){

  2680.     return sws_getConstVec(1.0, 1);

  2681. }

  2682. 

  2683. double sws_dcVec(SwsVector *a){

  2684.     int i;

  2685.     double sum=0;

  2686. 

  2687.     for (i=0; i<a->length; i++)

  2688.         sum+= a->coeff[i];

  2689. 

  2690.     return sum;

  2691. }

  2692. 

  2693. void sws_scaleVec(SwsVector *a, double scalar){

  2694.     int i;

  2695. 

  2696.     for (i=0; i<a->length; i++)

  2697.         a->coeff[i]*= scalar;

  2698. }

  2699. 

  2700. void sws_normalizeVec(SwsVector *a, double height){

  2701.     sws_scaleVec(a, height/sws_dcVec(a));

  2702. }

  2703. 

  2704. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){

  2705.     int length= a->length + b->length - 1;

  2706.     double *coeff= av_malloc(length*sizeof(double));

  2707.     int i, j;

  2708.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2709. 

  2710.     vec->coeff= coeff;

  2711.     vec->length= length;

  2712. 

  2713.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2714. 

  2715.     for (i=0; i<a->length; i++)

  2716.     {

  2717.         for (j=0; j<b->length; j++)

  2718.         {

  2719.             coeff[i+j]+= a->coeff[i]*b->coeff[j];

  2720.         }

  2721.     }

  2722. 

  2723.     return vec;

  2724. }

  2725. 

  2726. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){

  2727.     int length= FFMAX(a->length, b->length);

  2728.     double *coeff= av_malloc(length*sizeof(double));

  2729.     int i;

  2730.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2731. 

  2732.     vec->coeff= coeff;

  2733.     vec->length= length;

  2734. 

  2735.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2736. 

  2737.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2738.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  2739. 

  2740.     return vec;

  2741. }

  2742. 

  2743. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){

  2744.     int length= FFMAX(a->length, b->length);

  2745.     double *coeff= av_malloc(length*sizeof(double));

  2746.     int i;

  2747.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2748. 

  2749.     vec->coeff= coeff;

  2750.     vec->length= length;

  2751. 

  2752.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2753. 

  2754.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2755.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  2756. 

  2757.     return vec;

  2758. }

  2759. 

  2760. /* shift left / or right if "shift" is negative */

  2761. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){

  2762.     int length= a->length + FFABS(shift)*2;

  2763.     double *coeff= av_malloc(length*sizeof(double));

  2764.     int i;

  2765.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2766. 

  2767.     vec->coeff= coeff;

  2768.     vec->length= length;

  2769. 

  2770.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2771. 

  2772.     for (i=0; i<a->length; i++)

  2773.     {

  2774.         coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  2775.     }

  2776. 

  2777.     return vec;

  2778. }

  2779. 

  2780. void sws_shiftVec(SwsVector *a, int shift){

  2781.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  2782.     av_free(a->coeff);

  2783.     a->coeff= shifted->coeff;

  2784.     a->length= shifted->length;

  2785.     av_free(shifted);

  2786. }

  2787. 

  2788. void sws_addVec(SwsVector *a, SwsVector *b){

  2789.     SwsVector *sum= sws_sumVec(a, b);

  2790.     av_free(a->coeff);

  2791.     a->coeff= sum->coeff;

  2792.     a->length= sum->length;

  2793.     av_free(sum);

  2794. }

  2795. 

  2796. void sws_subVec(SwsVector *a, SwsVector *b){

  2797.     SwsVector *diff= sws_diffVec(a, b);

  2798.     av_free(a->coeff);

  2799.     a->coeff= diff->coeff;

  2800.     a->length= diff->length;

  2801.     av_free(diff);

  2802. }

  2803. 

  2804. void sws_convVec(SwsVector *a, SwsVector *b){

  2805.     SwsVector *conv= sws_getConvVec(a, b);

  2806.     av_free(a->coeff);

  2807.     a->coeff= conv->coeff;

  2808.     a->length= conv->length;

  2809.     av_free(conv);

  2810. }

  2811. 

  2812. SwsVector *sws_cloneVec(SwsVector *a){

  2813.     double *coeff= av_malloc(a->length*sizeof(double));

  2814.     int i;

  2815.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2816. 

  2817.     vec->coeff= coeff;

  2818.     vec->length= a->length;

  2819. 

  2820.     for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];

  2821. 

  2822.     return vec;

  2823. }

  2824. 

  2825. void sws_printVec(SwsVector *a){

  2826.     int i;

  2827.     double max=0;

  2828.     double min=0;

  2829.     double range;

  2830. 

  2831.     for (i=0; i<a->length; i++)

  2832.         if (a->coeff[i]>max) max= a->coeff[i];

  2833. 

  2834.     for (i=0; i<a->length; i++)

  2835.         if (a->coeff[i]<min) min= a->coeff[i];

  2836. 

  2837.     range= max - min;

  2838. 

  2839.     for (i=0; i<a->length; i++)

  2840.     {

  2841.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  2842.         av_log(NULL, AV_LOG_DEBUG, "%1.3f ", a->coeff[i]);

  2843.         for (;x>0; x--) av_log(NULL, AV_LOG_DEBUG, " ");

  2844.         av_log(NULL, AV_LOG_DEBUG, "|\n");

  2845.     }

  2846. }

  2847. 

  2848. void sws_freeVec(SwsVector *a){

  2849.     if (!a) return;

  2850.     av_free(a->coeff);

  2851.     a->coeff=NULL;

  2852.     a->length=0;

  2853.     av_free(a);

  2854. }

  2855. 

  2856. void sws_freeFilter(SwsFilter *filter){

  2857.     if (!filter) return;

  2858. 

  2859.     if (filter->lumH) sws_freeVec(filter->lumH);

  2860.     if (filter->lumV) sws_freeVec(filter->lumV);

  2861.     if (filter->chrH) sws_freeVec(filter->chrH);

  2862.     if (filter->chrV) sws_freeVec(filter->chrV);

  2863.     av_free(filter);

  2864. }

  2865. 

  2866. 

  2867. void sws_freeContext(SwsContext *c){

  2868.     int i;

  2869.     if (!c) return;

  2870. 

  2871.     if (c->lumPixBuf)

  2872.     {

  2873.         for (i=0; i<c->vLumBufSize; i++)

  2874.         {

  2875.             av_free(c->lumPixBuf[i]);

  2876.             c->lumPixBuf[i]=NULL;

  2877.         }

  2878.         av_free(c->lumPixBuf);

  2879.         c->lumPixBuf=NULL;

  2880.     }

  2881. 

  2882.     if (c->chrPixBuf)

  2883.     {

  2884.         for (i=0; i<c->vChrBufSize; i++)

  2885.         {

  2886.             av_free(c->chrPixBuf[i]);

  2887.             c->chrPixBuf[i]=NULL;

  2888.         }

  2889.         av_free(c->chrPixBuf);

  2890.         c->chrPixBuf=NULL;

  2891.     }

  2892. 

  2893.     av_free(c->vLumFilter);

  2894.     c->vLumFilter = NULL;

  2895.     av_free(c->vChrFilter);

  2896.     c->vChrFilter = NULL;

  2897.     av_free(c->hLumFilter);

  2898.     c->hLumFilter = NULL;

  2899.     av_free(c->hChrFilter);

  2900.     c->hChrFilter = NULL;

  2901. #ifdef HAVE_ALTIVEC

  2902.     av_free(c->vYCoeffsBank);

  2903.     c->vYCoeffsBank = NULL;

  2904.     av_free(c->vCCoeffsBank);

  2905.     c->vCCoeffsBank = NULL;

  2906. #endif

  2907. 

  2908.     av_free(c->vLumFilterPos);

  2909.     c->vLumFilterPos = NULL;

  2910.     av_free(c->vChrFilterPos);

  2911.     c->vChrFilterPos = NULL;

  2912.     av_free(c->hLumFilterPos);

  2913.     c->hLumFilterPos = NULL;

  2914.     av_free(c->hChrFilterPos);

  2915.     c->hChrFilterPos = NULL;

  2916. 

  2917. #if defined(ARCH_X86) && defined(CONFIG_GPL)

  2918. #ifdef MAP_ANONYMOUS

  2919.     if (c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);

  2920.     if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);

  2921. #else

  2922.     av_free(c->funnyYCode);

  2923.     av_free(c->funnyUVCode);

  2924. #endif

  2925.     c->funnyYCode=NULL;

  2926.     c->funnyUVCode=NULL;

  2927. #endif /* defined(ARCH_X86) */

  2928. 

  2929.     av_free(c->lumMmx2Filter);

  2930.     c->lumMmx2Filter=NULL;

  2931.     av_free(c->chrMmx2Filter);

  2932.     c->chrMmx2Filter=NULL;

  2933.     av_free(c->lumMmx2FilterPos);

  2934.     c->lumMmx2FilterPos=NULL;

  2935.     av_free(c->chrMmx2FilterPos);

  2936.     c->chrMmx2FilterPos=NULL;

  2937.     av_free(c->yuvTable);

  2938.     c->yuvTable=NULL;

  2939. 

  2940.     av_free(c);

  2941. }

  2942. 

  2943. /**

  2944.  * Checks if context is valid or reallocs a new one instead.

  2945.  * If context is NULL, just calls sws_getContext() to get a new one.

  2946.  * Otherwise, checks if the parameters are the same already saved in context.

  2947.  * If that is the case, returns the current context.

  2948.  * Otherwise, frees context and gets a new one.

  2949.  *

  2950.  * Be warned that srcFilter, dstFilter are not checked, they are

  2951.  * asumed to remain valid.

  2952.  */

  2953. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  2954.                                         int srcW, int srcH, int srcFormat,

  2955.                                         int dstW, int dstH, int dstFormat, int flags,

  2956.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)

  2957. {

  2958.     if (context != NULL) {

  2959.         if ((context->srcW != srcW) || (context->srcH != srcH) ||

  2960.             (context->srcFormat != srcFormat) ||

  2961.             (context->dstW != dstW) || (context->dstH != dstH) ||

  2962.             (context->dstFormat != dstFormat) || (context->flags != flags) ||

  2963.             (context->param != param))

  2964.         {

  2965.             sws_freeContext(context);

  2966.             context = NULL;

  2967.         }

  2968.     }

  2969.     if (context == NULL) {

  2970.         return sws_getContext(srcW, srcH, srcFormat,

  2971.                               dstW, dstH, dstFormat, flags,

  2972.                               srcFilter, dstFilter, param);

  2973.     }

  2974.     return context;

  2975. }