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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 did not write it down ...)

  42.  YV12 -> BGR16

  43.  YV12 -> YV12

  44.  BGR15 -> BGR16

  45.  BGR16 -> BGR16

  46.  YVU9 -> YV12

  47. 

  48. untested special converters

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

  50.   YV12/I420 -> YV12/I420

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

  52.   BGR24 -> BGR32 & RGB24 -> RGB32

  53.   BGR32 -> BGR24 & RGB32 -> RGB24

  54.   BGR24 -> YV12

  55. */

  56. 

  57. #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_YUVA420P    \

  106.         || (x)==PIX_FMT_YUYV422     \

  107.         || (x)==PIX_FMT_UYVY422     \

  108.         || (x)==PIX_FMT_RGB32       \

  109.         || (x)==PIX_FMT_BGR24       \

  110.         || (x)==PIX_FMT_BGR565      \

  111.         || (x)==PIX_FMT_BGR555      \

  112.         || (x)==PIX_FMT_BGR32       \

  113.         || (x)==PIX_FMT_RGB24       \

  114.         || (x)==PIX_FMT_RGB565      \

  115.         || (x)==PIX_FMT_RGB555      \

  116.         || (x)==PIX_FMT_GRAY8       \

  117.         || (x)==PIX_FMT_YUV410P     \

  118.         || (x)==PIX_FMT_GRAY16BE    \

  119.         || (x)==PIX_FMT_GRAY16LE    \

  120.         || (x)==PIX_FMT_YUV444P     \

  121.         || (x)==PIX_FMT_YUV422P     \

  122.         || (x)==PIX_FMT_YUV411P     \

  123.         || (x)==PIX_FMT_PAL8        \

  124.         || (x)==PIX_FMT_BGR8        \

  125.         || (x)==PIX_FMT_RGB8        \

  126.         || (x)==PIX_FMT_BGR4_BYTE   \

  127.         || (x)==PIX_FMT_RGB4_BYTE   \

  128.         || (x)==PIX_FMT_YUV440P     \

  129.     )

  130. #define isSupportedOut(x)   (       \

  131.            (x)==PIX_FMT_YUV420P     \

  132.         || (x)==PIX_FMT_YUYV422     \

  133.         || (x)==PIX_FMT_UYVY422     \

  134.         || (x)==PIX_FMT_YUV444P     \

  135.         || (x)==PIX_FMT_YUV422P     \

  136.         || (x)==PIX_FMT_YUV411P     \

  137.         || isRGB(x)                 \

  138.         || isBGR(x)                 \

  139.         || (x)==PIX_FMT_NV12        \

  140.         || (x)==PIX_FMT_NV21        \

  141.         || (x)==PIX_FMT_GRAY16BE    \

  142.         || (x)==PIX_FMT_GRAY16LE    \

  143.         || (x)==PIX_FMT_GRAY8       \

  144.         || (x)==PIX_FMT_YUV410P     \

  145.     )

  146. #define isPacked(x)         (       \

  147.            (x)==PIX_FMT_PAL8        \

  148.         || (x)==PIX_FMT_YUYV422     \

  149.         || (x)==PIX_FMT_UYVY422     \

  150.         || isRGB(x)                 \

  151.         || isBGR(x)                 \

  152.     )

  153. 

  154. #define RGB2YUV_SHIFT 16

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

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

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

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

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

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

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

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

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

  164. 

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

  166. 

  167. /*

  168. NOTES

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

  170. 

  171. TODO

  172. more intelligent misalignment avoidance for the horizontal scaler

  173. write special vertical cubic upscale version

  174. Optimize C code (yv12 / minmax)

  175. add support for packed pixel yuv input & output

  176. add support for Y8 output

  177. optimize bgr24 & bgr32

  178. add BGR4 output support

  179. write special BGR->BGR scaler

  180. */

  181. 

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

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

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

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

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

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

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

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

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

  191. 

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

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

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

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

  196. 

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

  198.         0x0103010301030103LL,

  199.         0x0200020002000200LL,};

  200. 

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

  202.         0x0602060206020602LL,

  203.         0x0004000400040004LL,};

  204. 

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

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

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

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

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

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

  211. 

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

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

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

  215. 

  216. #ifdef FAST_BGR2YV12

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

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

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

  220. #else

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

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

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

  224. #endif /* FAST_BGR2YV12 */

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

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

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

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

  229. 

  230. // clipping helper table for C implementations:

  231. static unsigned char clip_table[768];

  232. 

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

  234. 

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

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

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

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

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

  240. 

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

  242.     return "swscaler";

  243. }

  244. 

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

  246. #define DEFAULT 0

  247. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

  248. 

  249. static const AVOption options[] = {

  250.     { "sws_flags", "scaler/cpu flags", OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, 0, UINT_MAX, VE, "sws_flags" },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  266.     { "3dnow", "3DNOW SIMD acceleration", 0, FF_OPT_TYPE_CONST, SWS_CPU_CAPS_3DNOW, INT_MIN, INT_MAX, VE, "sws_flags" },

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

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

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

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

  271.     { NULL }

  272. };

  273. 

  274. #undef VE

  275. #undef DEFAULT

  276. 

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

  278. 

  279. const char *sws_format_name(enum PixelFormat format)

  280. {

  281.     switch (format) {

  282.         case PIX_FMT_YUV420P:

  283.             return "yuv420p";

  284.         case PIX_FMT_YUVA420P:

  285.             return "yuva420p";

  286.         case PIX_FMT_YUYV422:

  287.             return "yuyv422";

  288.         case PIX_FMT_RGB24:

  289.             return "rgb24";

  290.         case PIX_FMT_BGR24:

  291.             return "bgr24";

  292.         case PIX_FMT_YUV422P:

  293.             return "yuv422p";

  294.         case PIX_FMT_YUV444P:

  295.             return "yuv444p";

  296.         case PIX_FMT_RGB32:

  297.             return "rgb32";

  298.         case PIX_FMT_YUV410P:

  299.             return "yuv410p";

  300.         case PIX_FMT_YUV411P:

  301.             return "yuv411p";

  302.         case PIX_FMT_RGB565:

  303.             return "rgb565";

  304.         case PIX_FMT_RGB555:

  305.             return "rgb555";

  306.         case PIX_FMT_GRAY16BE:

  307.             return "gray16be";

  308.         case PIX_FMT_GRAY16LE:

  309.             return "gray16le";

  310.         case PIX_FMT_GRAY8:

  311.             return "gray8";

  312.         case PIX_FMT_MONOWHITE:

  313.             return "mono white";

  314.         case PIX_FMT_MONOBLACK:

  315.             return "mono black";

  316.         case PIX_FMT_PAL8:

  317.             return "Palette";

  318.         case PIX_FMT_YUVJ420P:

  319.             return "yuvj420p";

  320.         case PIX_FMT_YUVJ422P:

  321.             return "yuvj422p";

  322.         case PIX_FMT_YUVJ444P:

  323.             return "yuvj444p";

  324.         case PIX_FMT_XVMC_MPEG2_MC:

  325.             return "xvmc_mpeg2_mc";

  326.         case PIX_FMT_XVMC_MPEG2_IDCT:

  327.             return "xvmc_mpeg2_idct";

  328.         case PIX_FMT_UYVY422:

  329.             return "uyvy422";

  330.         case PIX_FMT_UYYVYY411:

  331.             return "uyyvyy411";

  332.         case PIX_FMT_RGB32_1:

  333.             return "rgb32x";

  334.         case PIX_FMT_BGR32_1:

  335.             return "bgr32x";

  336.         case PIX_FMT_BGR32:

  337.             return "bgr32";

  338.         case PIX_FMT_BGR565:

  339.             return "bgr565";

  340.         case PIX_FMT_BGR555:

  341.             return "bgr555";

  342.         case PIX_FMT_BGR8:

  343.             return "bgr8";

  344.         case PIX_FMT_BGR4:

  345.             return "bgr4";

  346.         case PIX_FMT_BGR4_BYTE:

  347.             return "bgr4 byte";

  348.         case PIX_FMT_RGB8:

  349.             return "rgb8";

  350.         case PIX_FMT_RGB4:

  351.             return "rgb4";

  352.         case PIX_FMT_RGB4_BYTE:

  353.             return "rgb4 byte";

  354.         case PIX_FMT_NV12:

  355.             return "nv12";

  356.         case PIX_FMT_NV21:

  357.             return "nv21";

  358.         case PIX_FMT_YUV440P:

  359.             return "yuv440p";

  360.         default:

  361.             return "Unknown format";

  362.     }

  363. }

  364. 

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

  366. void in_asm_used_var_warning_killer()

  367. {

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

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

  370.     ff_M24A+ff_M24B+ff_M24C+w02 + b5Dither+g5Dither+r5Dither+g6Dither+ff_dither4[0]+ff_dither8[0]+bm01010101;

  371.     if (i) i=0;

  372. }

  373. #endif

  374. 

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

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

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

  378. {

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

  380.     int i;

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

  382.     {

  383.         int val=1<<18;

  384.         int j;

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

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

  387. 

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

  389.     }

  390. 

  391.     if (uDest)

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

  393.         {

  394.             int u=1<<18;

  395.             int v=1<<18;

  396.             int j;

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

  398.             {

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

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

  401.             }

  402. 

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

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

  405.         }

  406. }

  407. 

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

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

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

  411. {

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

  413.     int i;

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

  415.     {

  416.         int val=1<<18;

  417.         int j;

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

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

  420. 

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

  422.     }

  423. 

  424.     if (!uDest)

  425.         return;

  426. 

  427.     if (dstFormat == PIX_FMT_NV12)

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

  429.         {

  430.             int u=1<<18;

  431.             int v=1<<18;

  432.             int j;

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

  434.             {

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

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

  437.             }

  438. 

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

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

  441.         }

  442.     else

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

  444.         {

  445.             int u=1<<18;

  446.             int v=1<<18;

  447.             int j;

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

  449.             {

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

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

  452.             }

  453. 

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

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

  456.         }

  457. }

  458. 

  459. #define YSCALE_YUV_2_PACKEDX_C(type) \

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

  461.         int j;\

  462.         int Y1 = 1<<18;\

  463.         int Y2 = 1<<18;\

  464.         int U  = 1<<18;\

  465.         int V  = 1<<18;\

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

  467.         const int i2= 2*i;\

  468.         \

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

  470.         {\

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

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

  473.         }\

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

  475.         {\

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

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

  478.         }\

  479.         Y1>>=19;\

  480.         Y2>>=19;\

  481.         U >>=19;\

  482.         V >>=19;\

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

  484.         {\

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

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

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

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

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

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

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

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

  493.         }

  494. 

  495. #define YSCALE_YUV_2_RGBX_C(type) \

  496.     YSCALE_YUV_2_PACKEDX_C(type)  \

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

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

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

  500. 

  501. #define YSCALE_YUV_2_PACKED2_C   \

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

  503.         const int i2= 2*i;       \

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

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

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

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

  508. 

  509. #define YSCALE_YUV_2_RGB2_C(type) \

  510.     YSCALE_YUV_2_PACKED2_C\

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

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

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

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

  515. 

  516. #define YSCALE_YUV_2_PACKED1_C \

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

  518.         const int i2= 2*i;\

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

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

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

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

  523. 

  524. #define YSCALE_YUV_2_RGB1_C(type) \

  525.     YSCALE_YUV_2_PACKED1_C\

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

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

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

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

  530. 

  531. #define YSCALE_YUV_2_PACKED1B_C \

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

  533.         const int i2= 2*i;\

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

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

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

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

  538. 

  539. #define YSCALE_YUV_2_RGB1B_C(type) \

  540.     YSCALE_YUV_2_PACKED1B_C\

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

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

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

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

  545. 

  546. #define YSCALE_YUV_2_ANYRGB_C(func, func2)\

  547.     switch(c->dstFormat)\

  548.     {\

  549.     case PIX_FMT_RGB32:\

  550.     case PIX_FMT_BGR32:\

  551.         func(uint32_t)\

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

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

  554.         }                \

  555.         break;\

  556.     case PIX_FMT_RGB24:\

  557.         func(uint8_t)\

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

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

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

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

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

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

  564.             dest+=6;\

  565.         }\

  566.         break;\

  567.     case PIX_FMT_BGR24:\

  568.         func(uint8_t)\

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

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

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

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

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

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

  575.             dest+=6;\

  576.         }\

  577.         break;\

  578.     case PIX_FMT_RGB565:\

  579.     case PIX_FMT_BGR565:\

  580.         {\

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

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

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

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

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

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

  587.             func(uint16_t)\

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

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

  590.             }\

  591.         }\

  592.         break;\

  593.     case PIX_FMT_RGB555:\

  594.     case PIX_FMT_BGR555:\

  595.         {\

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

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

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

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

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

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

  602.             func(uint16_t)\

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

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

  605.             }\

  606.         }\

  607.         break;\

  608.     case PIX_FMT_RGB8:\

  609.     case PIX_FMT_BGR8:\

  610.         {\

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

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

  613.             func(uint8_t)\

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

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

  616.             }\

  617.         }\

  618.         break;\

  619.     case PIX_FMT_RGB4:\

  620.     case PIX_FMT_BGR4:\

  621.         {\

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

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

  624.             func(uint8_t)\

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

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

  627.             }\

  628.         }\

  629.         break;\

  630.     case PIX_FMT_RGB4_BYTE:\

  631.     case PIX_FMT_BGR4_BYTE:\

  632.         {\

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

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

  635.             func(uint8_t)\

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

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

  638.             }\

  639.         }\

  640.         break;\

  641.     case PIX_FMT_MONOBLACK:\

  642.         {\

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

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

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

  646.                 int acc;\

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

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

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

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

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

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

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

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

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

  656.                 dest++;\

  657.             }\

  658. \

  659. /*\

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

  661. {\

  662.             int acc=0;\

  663.             int left=0;\

  664.             static int top[1024];\

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

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

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

  668.             int topLeft=0;\

  669.             int shift=0;\

  670.             int count=0;\

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

  672.             int error_new=0;\

  673.             int error_in3=0;\

  674.             int f=0;\

  675.             \

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

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

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

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

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

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

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

  683. \

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

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

  686.                 f= error_new - error_in3*4;\

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

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

  689. \

  690.                 topLeft= top[i];\

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

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

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

  694. \

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

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

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

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

  699.                 }\

  700.             }\

  701. }\

  702. */\

  703.         }\

  704.         break;\

  705.     case PIX_FMT_YUYV422:\

  706.         func2\

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

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

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

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

  711.         }                \

  712.         break;\

  713.     case PIX_FMT_UYVY422:\

  714.         func2\

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

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

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

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

  719.         }                \

  720.         break;\

  721.     }\

  722. 

  723. 

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

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

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

  727. {

  728.     int i;

  729.     switch(c->dstFormat)

  730.     {

  731.     case PIX_FMT_BGR32:

  732.     case PIX_FMT_RGB32:

  733.         YSCALE_YUV_2_RGBX_C(uint32_t)

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

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

  736.         }

  737.         break;

  738.     case PIX_FMT_RGB24:

  739.         YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

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

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

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

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

  746.             dest+=6;

  747.         }

  748.         break;

  749.     case PIX_FMT_BGR24:

  750.         YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

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

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

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

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

  757.             dest+=6;

  758.         }

  759.         break;

  760.     case PIX_FMT_RGB565:

  761.     case PIX_FMT_BGR565:

  762.         {

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

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

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

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

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

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

  769.             YSCALE_YUV_2_RGBX_C(uint16_t)

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

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

  772.             }

  773.         }

  774.         break;

  775.     case PIX_FMT_RGB555:

  776.     case PIX_FMT_BGR555:

  777.         {

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

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

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

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

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

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

  784.             YSCALE_YUV_2_RGBX_C(uint16_t)

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

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

  787.             }

  788.         }

  789.         break;

  790.     case PIX_FMT_RGB8:

  791.     case PIX_FMT_BGR8:

  792.         {

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

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

  795.             YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

  798.             }

  799.         }

  800.         break;

  801.     case PIX_FMT_RGB4:

  802.     case PIX_FMT_BGR4:

  803.         {

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

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

  806.             YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

  809.             }

  810.         }

  811.         break;

  812.     case PIX_FMT_RGB4_BYTE:

  813.     case PIX_FMT_BGR4_BYTE:

  814.         {

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

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

  817.             YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

  820.             }

  821.         }

  822.         break;

  823.     case PIX_FMT_MONOBLACK:

  824.         {

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

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

  827.             int acc=0;

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

  829.                 int j;

  830.                 int Y1=1<<18;

  831.                 int Y2=1<<18;

  832. 

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

  834.                 {

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

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

  837.                 }

  838.                 Y1>>=19;

  839.                 Y2>>=19;

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

  841.                 {

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

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

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

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

  846.                 }

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

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

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

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

  851.                     dest++;

  852.                 }

  853.             }

  854.         }

  855.         break;

  856.     case PIX_FMT_YUYV422:

  857.         YSCALE_YUV_2_PACKEDX_C(void)

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

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

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

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

  862.         }

  863.         break;

  864.     case PIX_FMT_UYVY422:

  865.         YSCALE_YUV_2_PACKEDX_C(void)

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

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

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

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

  870.         }

  871.         break;

  872.     }

  873. }

  874. 

  875. 

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

  877. //Plain C versions

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

  879. #define COMPILE_C

  880. #endif

  881. 

  882. #ifdef ARCH_POWERPC

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

  884. #define COMPILE_ALTIVEC

  885. #endif //HAVE_ALTIVEC

  886. #endif //ARCH_POWERPC

  887. 

  888. #if defined(ARCH_X86)

  889. 

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

  891. #define COMPILE_MMX

  892. #endif

  893. 

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

  895. #define COMPILE_MMX2

  896. #endif

  897. 

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

  899. #define COMPILE_3DNOW

  900. #endif

  901. #endif //ARCH_X86 || ARCH_X86_64

  902. 

  903. #undef HAVE_MMX

  904. #undef HAVE_MMX2

  905. #undef HAVE_3DNOW

  906. 

  907. #ifdef COMPILE_C

  908. #undef HAVE_MMX

  909. #undef HAVE_MMX2

  910. #undef HAVE_3DNOW

  911. #undef HAVE_ALTIVEC

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

  913. #include "swscale_template.c"

  914. #endif

  915. 

  916. #ifdef COMPILE_ALTIVEC

  917. #undef RENAME

  918. #define HAVE_ALTIVEC

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

  920. #include "swscale_template.c"

  921. #endif

  922. 

  923. #if defined(ARCH_X86)

  924. 

  925. //X86 versions

  926. /*

  927. #undef RENAME

  928. #undef HAVE_MMX

  929. #undef HAVE_MMX2

  930. #undef HAVE_3DNOW

  931. #define ARCH_X86

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

  933. #include "swscale_template.c"

  934. */

  935. //MMX versions

  936. #ifdef COMPILE_MMX

  937. #undef RENAME

  938. #define HAVE_MMX

  939. #undef HAVE_MMX2

  940. #undef HAVE_3DNOW

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

  942. #include "swscale_template.c"

  943. #endif

  944. 

  945. //MMX2 versions

  946. #ifdef COMPILE_MMX2

  947. #undef RENAME

  948. #define HAVE_MMX

  949. #define HAVE_MMX2

  950. #undef HAVE_3DNOW

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

  952. #include "swscale_template.c"

  953. #endif

  954. 

  955. //3DNOW versions

  956. #ifdef COMPILE_3DNOW

  957. #undef RENAME

  958. #define HAVE_MMX

  959. #undef HAVE_MMX2

  960. #define HAVE_3DNOW

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

  962. #include "swscale_template.c"

  963. #endif

  964. 

  965. #endif //ARCH_X86 || ARCH_X86_64

  966. 

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

  968. 

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

  970. {

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

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

  973.     else                return getSplineCoeff(        0.0,

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

  975.                                                     c + 3.0*d,

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

  977.                                             dist-1.0);

  978. }

  979. 

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

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

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

  983. {

  984.     int i;

  985.     int filterSize;

  986.     int filter2Size;

  987.     int minFilterSize;

  988.     double *filter=NULL;

  989.     double *filter2=NULL;

  990. #if defined(ARCH_X86)

  991.     if (flags & SWS_CPU_CAPS_MMX)

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

  993. #endif

  994. 

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

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

  997. 

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

  999.     {

  1000.         int i;

  1001.         filterSize= 1;

  1002.         filter= av_malloc(dstW*sizeof(double)*filterSize);

  1003.         for (i=0; i<dstW*filterSize; i++) filter[i]=0;

  1004. 

  1005.         for (i=0; i<dstW; i++)

  1006.         {

  1007.             filter[i*filterSize]=1;

  1008.             (*filterPos)[i]=i;

  1009.         }

  1010. 

  1011.     }

  1012.     else if (flags&SWS_POINT) // lame looking point sampling mode

  1013.     {

  1014.         int i;

  1015.         int xDstInSrc;

  1016.         filterSize= 1;

  1017.         filter= av_malloc(dstW*sizeof(double)*filterSize);

  1018. 

  1019.         xDstInSrc= xInc/2 - 0x8000;

  1020.         for (i=0; i<dstW; i++)

  1021.         {

  1022.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1023. 

  1024.             (*filterPos)[i]= xx;

  1025.             filter[i]= 1.0;

  1026.             xDstInSrc+= xInc;

  1027.         }

  1028.     }

  1029.     else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) // bilinear upscale

  1030.     {

  1031.         int i;

  1032.         int xDstInSrc;

  1033.         if      (flags&SWS_BICUBIC) filterSize= 4;

  1034.         else if (flags&SWS_X      ) filterSize= 4;

  1035.         else                        filterSize= 2; // SWS_BILINEAR / SWS_AREA

  1036.         filter= av_malloc(dstW*sizeof(double)*filterSize);

  1037. 

  1038.         xDstInSrc= xInc/2 - 0x8000;

  1039.         for (i=0; i<dstW; i++)

  1040.         {

  1041.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1042.             int j;

  1043. 

  1044.             (*filterPos)[i]= xx;

  1045.                 //Bilinear upscale / linear interpolate / Area averaging

  1046.                 for (j=0; j<filterSize; j++)

  1047.                 {

  1048.                     double d= FFABS((xx<<16) - xDstInSrc)/(double)(1<<16);

  1049.                     double coeff= 1.0 - d;

  1050.                     if (coeff<0) coeff=0;

  1051.                     filter[i*filterSize + j]= coeff;

  1052.                     xx++;

  1053.                 }

  1054.             xDstInSrc+= xInc;

  1055.         }

  1056.     }

  1057.     else

  1058.     {

  1059.         double xDstInSrc;

  1060.         double sizeFactor, filterSizeInSrc;

  1061.         const double xInc1= (double)xInc / (double)(1<<16);

  1062. 

  1063.         if      (flags&SWS_BICUBIC)      sizeFactor=  4.0;

  1064.         else if (flags&SWS_X)            sizeFactor=  8.0;

  1065.         else if (flags&SWS_AREA)         sizeFactor=  1.0; //downscale only, for upscale it is bilinear

  1066.         else if (flags&SWS_GAUSS)        sizeFactor=  8.0;   // infinite ;)

  1067.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? 2.0*param[0] : 6.0;

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

  1069.         else if (flags&SWS_SPLINE)       sizeFactor= 20.0;  // infinite ;)

  1070.         else if (flags&SWS_BILINEAR)     sizeFactor=  2.0;

  1071.         else {

  1072.             sizeFactor= 0.0; //GCC warning killer

  1073.             ASSERT(0)

  1074.         }

  1075. 

  1076.         if (xInc1 <= 1.0)       filterSizeInSrc= sizeFactor; // upscale

  1077.         else                    filterSizeInSrc= sizeFactor*srcW / (double)dstW;

  1078. 

  1079.         filterSize= (int)ceil(1 + filterSizeInSrc); // will be reduced later if possible

  1080.         if (filterSize > srcW-2) filterSize=srcW-2;

  1081. 

  1082.         filter= av_malloc(dstW*sizeof(double)*filterSize);

  1083. 

  1084.         xDstInSrc= xInc1 / 2.0 - 0.5;

  1085.         for (i=0; i<dstW; i++)

  1086.         {

  1087.             int xx= (int)(xDstInSrc - (filterSize-1)*0.5 + 0.5);

  1088.             int j;

  1089.             (*filterPos)[i]= xx;

  1090.             for (j=0; j<filterSize; j++)

  1091.             {

  1092.                 double d= FFABS(xx - xDstInSrc)/filterSizeInSrc*sizeFactor;

  1093.                 double coeff;

  1094.                 if (flags & SWS_BICUBIC)

  1095.                 {

  1096.                     double B= param[0] != SWS_PARAM_DEFAULT ? param[0] : 0.0;

  1097.                     double C= param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6;

  1098. 

  1099.                     if (d<1.0)

  1100.                         coeff = (12-9*B-6*C)*d*d*d + (-18+12*B+6*C)*d*d + 6-2*B;

  1101.                     else if (d<2.0)

  1102.                         coeff = (-B-6*C)*d*d*d + (6*B+30*C)*d*d + (-12*B-48*C)*d +8*B+24*C;

  1103.                     else

  1104.                         coeff=0.0;

  1105.                 }

  1106. /*                else if (flags & SWS_X)

  1107.                 {

  1108.                     double p= param ? param*0.01 : 0.3;

  1109.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1110.                     coeff*= pow(2.0, - p*d*d);

  1111.                 }*/

  1112.                 else if (flags & SWS_X)

  1113.                 {

  1114.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1115. 

  1116.                     if (d<1.0)

  1117.                         coeff = cos(d*PI);

  1118.                     else

  1119.                         coeff=-1.0;

  1120.                     if (coeff<0.0)      coeff= -pow(-coeff, A);

  1121.                     else                coeff=  pow( coeff, A);

  1122.                     coeff= coeff*0.5 + 0.5;

  1123.                 }

  1124.                 else if (flags & SWS_AREA)

  1125.                 {

  1126.                     double srcPixelSize= 1.0/xInc1;

  1127.                     if      (d + srcPixelSize/2 < 0.5) coeff= 1.0;

  1128.                     else if (d - srcPixelSize/2 < 0.5) coeff= (0.5-d)/srcPixelSize + 0.5;

  1129.                     else coeff=0.0;

  1130.                 }

  1131.                 else if (flags & SWS_GAUSS)

  1132.                 {

  1133.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1134.                     coeff = pow(2.0, - p*d*d);

  1135.                 }

  1136.                 else if (flags & SWS_SINC)

  1137.                 {

  1138.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1139.                 }

  1140.                 else if (flags & SWS_LANCZOS)

  1141.                 {

  1142.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1143.                     coeff = d ? sin(d*PI)*sin(d*PI/p)/(d*d*PI*PI/p) : 1.0;

  1144.                     if (d>p) coeff=0;

  1145.                 }

  1146.                 else if (flags & SWS_BILINEAR)

  1147.                 {

  1148.                     coeff= 1.0 - d;

  1149.                     if (coeff<0) coeff=0;

  1150.                 }

  1151.                 else if (flags & SWS_SPLINE)

  1152.                 {

  1153.                     double p=-2.196152422706632;

  1154.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, d);

  1155.                 }

  1156.                 else {

  1157.                     coeff= 0.0; //GCC warning killer

  1158.                     ASSERT(0)

  1159.                 }

  1160. 

  1161.                 filter[i*filterSize + j]= coeff;

  1162.                 xx++;

  1163.             }

  1164.             xDstInSrc+= xInc1;

  1165.         }

  1166.     }

  1167. 

  1168.     /* apply src & dst Filter to filter -> filter2

  1169.        av_free(filter);

  1170.     */

  1171.     ASSERT(filterSize>0)

  1172.     filter2Size= filterSize;

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

  1174.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1175.     ASSERT(filter2Size>0)

  1176.     filter2= av_malloc(filter2Size*dstW*sizeof(double));

  1177. 

  1178.     for (i=0; i<dstW; i++)

  1179.     {

  1180.         int j;

  1181.         SwsVector scaleFilter;

  1182.         SwsVector *outVec;

  1183. 

  1184.         scaleFilter.coeff= filter + i*filterSize;

  1185.         scaleFilter.length= filterSize;

  1186. 

  1187.         if (srcFilter) outVec= sws_getConvVec(srcFilter, &scaleFilter);

  1188.         else           outVec= &scaleFilter;

  1189. 

  1190.         ASSERT(outVec->length == filter2Size)

  1191.         //FIXME dstFilter

  1192. 

  1193.         for (j=0; j<outVec->length; j++)

  1194.         {

  1195.             filter2[i*filter2Size + j]= outVec->coeff[j];

  1196.         }

  1197. 

  1198.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1199. 

  1200.         if (outVec != &scaleFilter) sws_freeVec(outVec);

  1201.     }

  1202.     av_free(filter); filter=NULL;

  1203. 

  1204.     /* try to reduce the filter-size (step1 find size and shift left) */

  1205.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1206.     minFilterSize= 0;

  1207.     for (i=dstW-1; i>=0; i--)

  1208.     {

  1209.         int min= filter2Size;

  1210.         int j;

  1211.         double cutOff=0.0;

  1212. 

  1213.         /* get rid off near zero elements on the left by shifting left */

  1214.         for (j=0; j<filter2Size; j++)

  1215.         {

  1216.             int k;

  1217.             cutOff += FFABS(filter2[i*filter2Size]);

  1218. 

  1219.             if (cutOff > SWS_MAX_REDUCE_CUTOFF) break;

  1220. 

  1221.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1222.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1223. 

  1224.             // Move filter coeffs left

  1225.             for (k=1; k<filter2Size; k++)

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

  1227.             filter2[i*filter2Size + k - 1]= 0.0;

  1228.             (*filterPos)[i]++;

  1229.         }

  1230. 

  1231.         cutOff=0.0;

  1232.         /* count near zeros on the right */

  1233.         for (j=filter2Size-1; j>0; j--)

  1234.         {

  1235.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1236. 

  1237.             if (cutOff > SWS_MAX_REDUCE_CUTOFF) break;

  1238.             min--;

  1239.         }

  1240. 

  1241.         if (min>minFilterSize) minFilterSize= min;

  1242.     }

  1243. 

  1244.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1245.         // we can handle the special case 4,

  1246.         // so we don't want to go to the full 8

  1247.         if (minFilterSize < 5)

  1248.             filterAlign = 4;

  1249. 

  1250.         // we really don't want to waste our time

  1251.         // doing useless computation, so fall-back on

  1252.         // the scalar C code for very small filter.

  1253.         // vectorizing is worth it only if you have

  1254.         // decent-sized vector.

  1255.         if (minFilterSize < 3)

  1256.             filterAlign = 1;

  1257.     }

  1258. 

  1259.     if (flags & SWS_CPU_CAPS_MMX) {

  1260.         // special case for unscaled vertical filtering

  1261.         if (minFilterSize == 1 && filterAlign == 2)

  1262.             filterAlign= 1;

  1263.     }

  1264. 

  1265.     ASSERT(minFilterSize > 0)

  1266.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1267.     ASSERT(filterSize > 0)

  1268.     filter= av_malloc(filterSize*dstW*sizeof(double));

  1269.     if (filterSize >= MAX_FILTER_SIZE)

  1270.         return -1;

  1271.     *outFilterSize= filterSize;

  1272. 

  1273.     if (flags&SWS_PRINT_INFO)

  1274.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1275.     /* try to reduce the filter-size (step2 reduce it) */

  1276.     for (i=0; i<dstW; i++)

  1277.     {

  1278.         int j;

  1279. 

  1280.         for (j=0; j<filterSize; j++)

  1281.         {

  1282.             if (j>=filter2Size) filter[i*filterSize + j]= 0.0;

  1283.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1284.         }

  1285.     }

  1286.     av_free(filter2); filter2=NULL;

  1287. 

  1288. 

  1289.     //FIXME try to align filterpos if possible

  1290. 

  1291.     //fix borders

  1292.     for (i=0; i<dstW; i++)

  1293.     {

  1294.         int j;

  1295.         if ((*filterPos)[i] < 0)

  1296.         {

  1297.             // Move filter coeffs left to compensate for filterPos

  1298.             for (j=1; j<filterSize; j++)

  1299.             {

  1300.                 int left= FFMAX(j + (*filterPos)[i], 0);

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

  1302.                 filter[i*filterSize + j]=0;

  1303.             }

  1304.             (*filterPos)[i]= 0;

  1305.         }

  1306. 

  1307.         if ((*filterPos)[i] + filterSize > srcW)

  1308.         {

  1309.             int shift= (*filterPos)[i] + filterSize - srcW;

  1310.             // Move filter coeffs right to compensate for filterPos

  1311.             for (j=filterSize-2; j>=0; j--)

  1312.             {

  1313.                 int right= FFMIN(j + shift, filterSize-1);

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

  1315.                 filter[i*filterSize +j]=0;

  1316.             }

  1317.             (*filterPos)[i]= srcW - filterSize;

  1318.         }

  1319.     }

  1320. 

  1321.     // Note the +1 is for the MMXscaler which reads over the end

  1322.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1323.     *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));

  1324. 

  1325.     /* Normalize & Store in outFilter */

  1326.     for (i=0; i<dstW; i++)

  1327.     {

  1328.         int j;

  1329.         double error=0;

  1330.         double sum=0;

  1331.         double scale= one;

  1332. 

  1333.         for (j=0; j<filterSize; j++)

  1334.         {

  1335.             sum+= filter[i*filterSize + j];

  1336.         }

  1337.         scale/= sum;

  1338.         for (j=0; j<*outFilterSize; j++)

  1339.         {

  1340.             double v= filter[i*filterSize + j]*scale + error;

  1341.             int intV= floor(v + 0.5);

  1342.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1343.             error = v - intV;

  1344.         }

  1345.     }

  1346. 

  1347.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1348.     for (i=0; i<*outFilterSize; i++)

  1349.     {

  1350.         int j= dstW*(*outFilterSize);

  1351.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1352.     }

  1353. 

  1354.     av_free(filter);

  1355.     return 0;

  1356. }

  1357. 

  1358. #ifdef COMPILE_MMX2

  1359. static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1360. {

  1361.     uint8_t *fragmentA;

  1362.     long imm8OfPShufW1A;

  1363.     long imm8OfPShufW2A;

  1364.     long fragmentLengthA;

  1365.     uint8_t *fragmentB;

  1366.     long imm8OfPShufW1B;

  1367.     long imm8OfPShufW2B;

  1368.     long fragmentLengthB;

  1369.     int fragmentPos;

  1370. 

  1371.     int xpos, i;

  1372. 

  1373.     // create an optimized horizontal scaling routine

  1374. 

  1375.     //code fragment

  1376. 

  1377.     asm volatile(

  1378.         "jmp                         9f                 \n\t"

  1379.     // Begin

  1380.         "0:                                             \n\t"

  1381.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1382.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1383.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1384.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1385.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1386.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1387.         "1:                                             \n\t"

  1388.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1389.         "2:                                             \n\t"

  1390.         "psubw                    %%mm1, %%mm0          \n\t"

  1391.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1392.         "pmullw                   %%mm3, %%mm0          \n\t"

  1393.         "psllw                       $7, %%mm1          \n\t"

  1394.         "paddw                    %%mm1, %%mm0          \n\t"

  1395. 

  1396.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1397. 

  1398.         "add                         $8, %%"REG_a"      \n\t"

  1399.     // End

  1400.         "9:                                             \n\t"

  1401. //        "int $3                                         \n\t"

  1402.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1403.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1404.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1405.         "dec                         %1                 \n\t"

  1406.         "dec                         %2                 \n\t"

  1407.         "sub                         %0, %1             \n\t"

  1408.         "sub                         %0, %2             \n\t"

  1409.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1410.         "sub                         %0, %3             \n\t"

  1411. 

  1412. 

  1413.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1414.         "=r" (fragmentLengthA)

  1415.     );

  1416. 

  1417.     asm volatile(

  1418.         "jmp                         9f                 \n\t"

  1419.     // Begin

  1420.         "0:                                             \n\t"

  1421.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1422.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1423.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1424.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1425.         "1:                                             \n\t"

  1426.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1427.         "2:                                             \n\t"

  1428.         "psubw                    %%mm1, %%mm0          \n\t"

  1429.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1430.         "pmullw                   %%mm3, %%mm0          \n\t"

  1431.         "psllw                       $7, %%mm1          \n\t"

  1432.         "paddw                    %%mm1, %%mm0          \n\t"

  1433. 

  1434.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1435. 

  1436.         "add                         $8, %%"REG_a"      \n\t"

  1437.     // End

  1438.         "9:                                             \n\t"

  1439. //        "int                       $3                   \n\t"

  1440.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1441.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1442.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1443.         "dec                         %1                 \n\t"

  1444.         "dec                         %2                 \n\t"

  1445.         "sub                         %0, %1             \n\t"

  1446.         "sub                         %0, %2             \n\t"

  1447.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1448.         "sub                         %0, %3             \n\t"

  1449. 

  1450. 

  1451.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1452.         "=r" (fragmentLengthB)

  1453.     );

  1454. 

  1455.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1456.     fragmentPos=0;

  1457. 

  1458.     for (i=0; i<dstW/numSplits; i++)

  1459.     {

  1460.         int xx=xpos>>16;

  1461. 

  1462.         if ((i&3) == 0)

  1463.         {

  1464.             int a=0;

  1465.             int b=((xpos+xInc)>>16) - xx;

  1466.             int c=((xpos+xInc*2)>>16) - xx;

  1467.             int d=((xpos+xInc*3)>>16) - xx;

  1468. 

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

  1470.             filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1471.             filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1472.             filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1473.             filterPos[i/2]= xx;

  1474. 

  1475.             if (d+1<4)

  1476.             {

  1477.                 int maxShift= 3-(d+1);

  1478.                 int shift=0;

  1479. 

  1480.                 memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);

  1481. 

  1482.                 funnyCode[fragmentPos + imm8OfPShufW1B]=

  1483.                     (a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);

  1484.                 funnyCode[fragmentPos + imm8OfPShufW2B]=

  1485.                     a | (b<<2) | (c<<4) | (d<<6);

  1486. 

  1487.                 if (i+3>=dstW) shift=maxShift; //avoid overread

  1488.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1489. 

  1490.                 if (shift && i>=shift)

  1491.                 {

  1492.                     funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;

  1493.                     funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;

  1494.                     filterPos[i/2]-=shift;

  1495.                 }

  1496. 

  1497.                 fragmentPos+= fragmentLengthB;

  1498.             }

  1499.             else

  1500.             {

  1501.                 int maxShift= 3-d;

  1502.                 int shift=0;

  1503. 

  1504.                 memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);

  1505. 

  1506.                 funnyCode[fragmentPos + imm8OfPShufW1A]=

  1507.                 funnyCode[fragmentPos + imm8OfPShufW2A]=

  1508.                     a | (b<<2) | (c<<4) | (d<<6);

  1509. 

  1510.                 if (i+4>=dstW) shift=maxShift; //avoid overread

  1511.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align

  1512. 

  1513.                 if (shift && i>=shift)

  1514.                 {

  1515.                     funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;

  1516.                     funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;

  1517.                     filterPos[i/2]-=shift;

  1518.                 }

  1519. 

  1520.                 fragmentPos+= fragmentLengthA;

  1521.             }

  1522. 

  1523.             funnyCode[fragmentPos]= RET;

  1524.         }

  1525.         xpos+=xInc;

  1526.     }

  1527.     filterPos[i/2]= xpos>>16; // needed to jump to the next part

  1528. }

  1529. #endif /* COMPILE_MMX2 */

  1530. 

  1531. static void globalInit(void){

  1532.     // generating tables:

  1533.     int i;

  1534.     for (i=0; i<768; i++){

  1535.         int c= av_clip_uint8(i-256);

  1536.         clip_table[i]=c;

  1537.     }

  1538. }

  1539. 

  1540. static SwsFunc getSwsFunc(int flags){

  1541. 

  1542. #if defined(RUNTIME_CPUDETECT) && defined (CONFIG_GPL)

  1543. #if defined(ARCH_X86)

  1544.     // ordered per speed fastest first

  1545.     if (flags & SWS_CPU_CAPS_MMX2)

  1546.         return swScale_MMX2;

  1547.     else if (flags & SWS_CPU_CAPS_3DNOW)

  1548.         return swScale_3DNow;

  1549.     else if (flags & SWS_CPU_CAPS_MMX)

  1550.         return swScale_MMX;

  1551.     else

  1552.         return swScale_C;

  1553. 

  1554. #else

  1555. #ifdef ARCH_POWERPC

  1556.     if (flags & SWS_CPU_CAPS_ALTIVEC)

  1557.         return swScale_altivec;

  1558.     else

  1559.         return swScale_C;

  1560. #endif

  1561.     return swScale_C;

  1562. #endif /* defined(ARCH_X86) */

  1563. #else //RUNTIME_CPUDETECT

  1564. #ifdef HAVE_MMX2

  1565.     return swScale_MMX2;

  1566. #elif defined (HAVE_3DNOW)

  1567.     return swScale_3DNow;

  1568. #elif defined (HAVE_MMX)

  1569.     return swScale_MMX;

  1570. #elif defined (HAVE_ALTIVEC)

  1571.     return swScale_altivec;

  1572. #else

  1573.     return swScale_C;

  1574. #endif

  1575. #endif //!RUNTIME_CPUDETECT

  1576. }

  1577. 

  1578. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1579.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1580.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1581.     /* Copy Y plane */

  1582.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1583.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1584.     else

  1585.     {

  1586.         int i;

  1587.         uint8_t *srcPtr= src[0];

  1588.         uint8_t *dstPtr= dst;

  1589.         for (i=0; i<srcSliceH; i++)

  1590.         {

  1591.             memcpy(dstPtr, srcPtr, c->srcW);

  1592.             srcPtr+= srcStride[0];

  1593.             dstPtr+= dstStride[0];

  1594.         }

  1595.     }

  1596.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1597.     if (c->dstFormat == PIX_FMT_NV12)

  1598.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  1599.     else

  1600.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  1601. 

  1602.     return srcSliceH;

  1603. }

  1604. 

  1605. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1606.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1607.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1608. 

  1609.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1610. 

  1611.     return srcSliceH;

  1612. }

  1613. 

  1614. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1615.                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1616.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1617. 

  1618.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1619. 

  1620.     return srcSliceH;

  1621. }

  1622. 

  1623. /* {RGB,BGR}{15,16,24,32} -> {RGB,BGR}{15,16,24,32} */

  1624. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1625.                           int srcSliceH, uint8_t* dst[], int dstStride[]){

  1626.     const int srcFormat= c->srcFormat;

  1627.     const int dstFormat= c->dstFormat;

  1628.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  1629.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  1630.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1631.     const int dstId= fmt_depth(dstFormat) >> 2;

  1632.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1633. 

  1634.     /* BGR -> BGR */

  1635.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  1636.        || (isRGB(srcFormat) && isRGB(dstFormat))){

  1637.         switch(srcId | (dstId<<4)){

  1638.         case 0x34: conv= rgb16to15; break;

  1639.         case 0x36: conv= rgb24to15; break;

  1640.         case 0x38: conv= rgb32to15; break;

  1641.         case 0x43: conv= rgb15to16; break;

  1642.         case 0x46: conv= rgb24to16; break;

  1643.         case 0x48: conv= rgb32to16; break;

  1644.         case 0x63: conv= rgb15to24; break;

  1645.         case 0x64: conv= rgb16to24; break;

  1646.         case 0x68: conv= rgb32to24; break;

  1647.         case 0x83: conv= rgb15to32; break;

  1648.         case 0x84: conv= rgb16to32; break;

  1649.         case 0x86: conv= rgb24to32; break;

  1650.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1651.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1652.         }

  1653.     }else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  1654.              || (isRGB(srcFormat) && isBGR(dstFormat))){

  1655.         switch(srcId | (dstId<<4)){

  1656.         case 0x33: conv= rgb15tobgr15; break;

  1657.         case 0x34: conv= rgb16tobgr15; break;

  1658.         case 0x36: conv= rgb24tobgr15; break;

  1659.         case 0x38: conv= rgb32tobgr15; break;

  1660.         case 0x43: conv= rgb15tobgr16; break;

  1661.         case 0x44: conv= rgb16tobgr16; break;

  1662.         case 0x46: conv= rgb24tobgr16; break;

  1663.         case 0x48: conv= rgb32tobgr16; break;

  1664.         case 0x63: conv= rgb15tobgr24; break;

  1665.         case 0x64: conv= rgb16tobgr24; break;

  1666.         case 0x66: conv= rgb24tobgr24; break;

  1667.         case 0x68: conv= rgb32tobgr24; break;

  1668.         case 0x83: conv= rgb15tobgr32; break;

  1669.         case 0x84: conv= rgb16tobgr32; break;

  1670.         case 0x86: conv= rgb24tobgr32; break;

  1671.         case 0x88: conv= rgb32tobgr32; break;

  1672.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1673.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1674.         }

  1675.     }else{

  1676.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1677.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1678.     }

  1679. 

  1680.     if(conv)

  1681.     {

  1682.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  1683.             conv(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1684.         else

  1685.         {

  1686.             int i;

  1687.             uint8_t *srcPtr= src[0];

  1688.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1689. 

  1690.             for (i=0; i<srcSliceH; i++)

  1691.             {

  1692.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1693.                 srcPtr+= srcStride[0];

  1694.                 dstPtr+= dstStride[0];

  1695.             }

  1696.         }

  1697.     }

  1698.     return srcSliceH;

  1699. }

  1700. 

  1701. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

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

  1703. 

  1704.     rgb24toyv12(

  1705.         src[0],

  1706.         dst[0]+ srcSliceY    *dstStride[0],

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

  1708.         dst[2]+(srcSliceY>>1)*dstStride[2],

  1709.         c->srcW, srcSliceH,

  1710.         dstStride[0], dstStride[1], srcStride[0]);

  1711.     return srcSliceH;

  1712. }

  1713. 

  1714. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1715.                              int srcSliceH, uint8_t* dst[], int dstStride[]){

  1716.     int i;

  1717. 

  1718.     /* copy Y */

  1719.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  1720.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  1721.     else{

  1722.         uint8_t *srcPtr= src[0];

  1723.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1724. 

  1725.         for (i=0; i<srcSliceH; i++)

  1726.         {

  1727.             memcpy(dstPtr, srcPtr, c->srcW);

  1728.             srcPtr+= srcStride[0];

  1729.             dstPtr+= dstStride[0];

  1730.         }

  1731.     }

  1732. 

  1733.     if (c->dstFormat==PIX_FMT_YUV420P){

  1734.         planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);

  1735.         planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);

  1736.     }else{

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

  1738.         planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);

  1739.     }

  1740.     return srcSliceH;

  1741. }

  1742. 

  1743. /* unscaled copy like stuff (assumes nearly identical formats) */

  1744. static int simpleCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1745.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  1746. 

  1747.     if (isPacked(c->srcFormat))

  1748.     {

  1749.         if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1750.             memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1751.         else

  1752.         {

  1753.             int i;

  1754.             uint8_t *srcPtr= src[0];

  1755.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1756.             int length=0;

  1757. 

  1758.             /* universal length finder */

  1759.             while(length+c->srcW <= FFABS(dstStride[0])

  1760.                && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  1761.             ASSERT(length!=0);

  1762. 

  1763.             for (i=0; i<srcSliceH; i++)

  1764.             {

  1765.                 memcpy(dstPtr, srcPtr, length);

  1766.                 srcPtr+= srcStride[0];

  1767.                 dstPtr+= dstStride[0];

  1768.             }

  1769.         }

  1770.     }

  1771.     else

  1772.     { /* Planar YUV or gray */

  1773.         int plane;

  1774.         for (plane=0; plane<3; plane++)

  1775.         {

  1776.             int length= plane==0 ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1777.             int y=      plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1778.             int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1779. 

  1780.             if ((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)

  1781.             {

  1782.                 if (!isGray(c->dstFormat))

  1783.                     memset(dst[plane], 128, dstStride[plane]*height);

  1784.             }

  1785.             else

  1786.             {

  1787.                 if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  1788.                     memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  1789.                 else

  1790.                 {

  1791.                     int i;

  1792.                     uint8_t *srcPtr= src[plane];

  1793.                     uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  1794.                     for (i=0; i<height; i++)

  1795.                     {

  1796.                         memcpy(dstPtr, srcPtr, length);

  1797.                         srcPtr+= srcStride[plane];

  1798.                         dstPtr+= dstStride[plane];

  1799.                     }

  1800.                 }

  1801.             }

  1802.         }

  1803.     }

  1804.     return srcSliceH;

  1805. }

  1806. 

  1807. static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1808.                         int srcSliceH, uint8_t* dst[], int dstStride[]){

  1809. 

  1810.     int length= c->srcW;

  1811.     int y=      srcSliceY;

  1812.     int height= srcSliceH;

  1813.     int i, j;

  1814.     uint8_t *srcPtr= src[0];

  1815.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  1816. 

  1817.     if (!isGray(c->dstFormat)){

  1818.         int height= -((-srcSliceH)>>c->chrDstVSubSample);

  1819.         memset(dst[1], 128, dstStride[1]*height);

  1820.         memset(dst[2], 128, dstStride[2]*height);

  1821.     }

  1822.     if (c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;

  1823.     for (i=0; i<height; i++)

  1824.     {

  1825.         for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  1826.         srcPtr+= srcStride[0];

  1827.         dstPtr+= dstStride[0];

  1828.     }

  1829.     return srcSliceH;

  1830. }

  1831. 

  1832. static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

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

  1834. 

  1835.     int length= c->srcW;

  1836.     int y=      srcSliceY;

  1837.     int height= srcSliceH;

  1838.     int i, j;

  1839.     uint8_t *srcPtr= src[0];

  1840.     uint8_t *dstPtr= dst[0] + dstStride[0]*y;

  1841.     for (i=0; i<height; i++)

  1842.     {

  1843.         for (j=0; j<length; j++)

  1844.         {

  1845.             dstPtr[j<<1] = srcPtr[j];

  1846.             dstPtr[(j<<1)+1] = srcPtr[j];

  1847.         }

  1848.         srcPtr+= srcStride[0];

  1849.         dstPtr+= dstStride[0];

  1850.     }

  1851.     return srcSliceH;

  1852. }

  1853. 

  1854. static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1855.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  1856. 

  1857.     int length= c->srcW;

  1858.     int y=      srcSliceY;

  1859.     int height= srcSliceH;

  1860.     int i, j;

  1861.     uint16_t *srcPtr= src[0];

  1862.     uint16_t *dstPtr= dst[0] + dstStride[0]*y/2;

  1863.     for (i=0; i<height; i++)

  1864.     {

  1865.         for (j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);

  1866.         srcPtr+= srcStride[0]/2;

  1867.         dstPtr+= dstStride[0]/2;

  1868.     }

  1869.     return srcSliceH;

  1870. }

  1871. 

  1872. 

  1873. static void getSubSampleFactors(int *h, int *v, int format){

  1874.     switch(format){

  1875.     case PIX_FMT_UYVY422:

  1876.     case PIX_FMT_YUYV422:

  1877.         *h=1;

  1878.         *v=0;

  1879.         break;

  1880.     case PIX_FMT_YUV420P:

  1881.     case PIX_FMT_YUVA420P:

  1882.     case PIX_FMT_GRAY16BE:

  1883.     case PIX_FMT_GRAY16LE:

  1884.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  1885.     case PIX_FMT_NV12:

  1886.     case PIX_FMT_NV21:

  1887.         *h=1;

  1888.         *v=1;

  1889.         break;

  1890.     case PIX_FMT_YUV440P:

  1891.         *h=0;

  1892.         *v=1;

  1893.         break;

  1894.     case PIX_FMT_YUV410P:

  1895.         *h=2;

  1896.         *v=2;

  1897.         break;

  1898.     case PIX_FMT_YUV444P:

  1899.         *h=0;

  1900.         *v=0;

  1901.         break;

  1902.     case PIX_FMT_YUV422P:

  1903.         *h=1;

  1904.         *v=0;

  1905.         break;

  1906.     case PIX_FMT_YUV411P:

  1907.         *h=2;

  1908.         *v=0;

  1909.         break;

  1910.     default:

  1911.         *h=0;

  1912.         *v=0;

  1913.         break;

  1914.     }

  1915. }

  1916. 

  1917. static uint16_t roundToInt16(int64_t f){

  1918.     int r= (f + (1<<15))>>16;

  1919.          if (r<-0x7FFF) return 0x8000;

  1920.     else if (r> 0x7FFF) return 0x7FFF;

  1921.     else                return r;

  1922. }

  1923. 

  1924. /**

  1925.  * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]

  1926.  * @param fullRange if 1 then the luma range is 0..255 if 0 it is 16..235

  1927.  * @return -1 if not supported

  1928.  */

  1929. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){

  1930.     int64_t crv =  inv_table[0];

  1931.     int64_t cbu =  inv_table[1];

  1932.     int64_t cgu = -inv_table[2];

  1933.     int64_t cgv = -inv_table[3];

  1934.     int64_t cy  = 1<<16;

  1935.     int64_t oy  = 0;

  1936. 

  1937.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  1938.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  1939.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  1940. 

  1941.     c->brightness= brightness;

  1942.     c->contrast  = contrast;

  1943.     c->saturation= saturation;

  1944.     c->srcRange  = srcRange;

  1945.     c->dstRange  = dstRange;

  1946. 

  1947.     c->uOffset=   0x0400040004000400LL;

  1948.     c->vOffset=   0x0400040004000400LL;

  1949. 

  1950.     if (!srcRange){

  1951.         cy= (cy*255) / 219;

  1952.         oy= 16<<16;

  1953.     }else{

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

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

  1956.         cgu= (cgu*224) / 255;

  1957.         cgv= (cgv*224) / 255;

  1958.     }

  1959. 

  1960.     cy = (cy *contrast             )>>16;

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

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

  1963.     cgu= (cgu*contrast * saturation)>>32;

  1964.     cgv= (cgv*contrast * saturation)>>32;

  1965. 

  1966.     oy -= 256*brightness;

  1967. 

  1968.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  1969.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  1970.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  1971.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  1972.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  1973.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  1974. 

  1975.     yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  1976.     //FIXME factorize

  1977. 

  1978. #ifdef COMPILE_ALTIVEC

  1979.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  1980.         yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);

  1981. #endif

  1982.     return 0;

  1983. }

  1984. 

  1985. /**

  1986.  * @return -1 if not supported

  1987.  */

  1988. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){

  1989.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  1990. 

  1991.     *inv_table = c->srcColorspaceTable;

  1992.     *table     = c->dstColorspaceTable;

  1993.     *srcRange  = c->srcRange;

  1994.     *dstRange  = c->dstRange;

  1995.     *brightness= c->brightness;

  1996.     *contrast  = c->contrast;

  1997.     *saturation= c->saturation;

  1998. 

  1999.     return 0;

  2000. }

  2001. 

  2002. static int handle_jpeg(int *format)

  2003. {

  2004.     switch (*format) {

  2005.         case PIX_FMT_YUVJ420P:

  2006.             *format = PIX_FMT_YUV420P;

  2007.             return 1;

  2008.         case PIX_FMT_YUVJ422P:

  2009.             *format = PIX_FMT_YUV422P;

  2010.             return 1;

  2011.         case PIX_FMT_YUVJ444P:

  2012.             *format = PIX_FMT_YUV444P;

  2013.             return 1;

  2014.         case PIX_FMT_YUVJ440P:

  2015.             *format = PIX_FMT_YUV440P;

  2016.             return 1;

  2017.         default:

  2018.             return 0;

  2019.     }

  2020. }

  2021. 

  2022. SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,

  2023.                            SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){

  2024. 

  2025.     SwsContext *c;

  2026.     int i;

  2027.     int usesVFilter, usesHFilter;

  2028.     int unscaled, needsDither;

  2029.     int srcRange, dstRange;

  2030.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2031. #if defined(ARCH_X86)

  2032.     if (flags & SWS_CPU_CAPS_MMX)

  2033.         asm volatile("emms\n\t"::: "memory");

  2034. #endif

  2035. 

  2036. #if !defined(RUNTIME_CPUDETECT) || !defined (CONFIG_GPL) //ensure that the flags match the compiled variant if cpudetect is off

  2037.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2038. #ifdef HAVE_MMX2

  2039.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2040. #elif defined (HAVE_3DNOW)

  2041.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2042. #elif defined (HAVE_MMX)

  2043.     flags |= SWS_CPU_CAPS_MMX;

  2044. #elif defined (HAVE_ALTIVEC)

  2045.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2046. #elif defined (ARCH_BFIN)

  2047.     flags |= SWS_CPU_CAPS_BFIN;

  2048. #endif

  2049. #endif /* RUNTIME_CPUDETECT */

  2050.     if (clip_table[512] != 255) globalInit();

  2051.     if (!rgb15to16) sws_rgb2rgb_init(flags);

  2052. 

  2053.     unscaled = (srcW == dstW && srcH == dstH);

  2054.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2055.         && (fmt_depth(dstFormat))<24

  2056.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2057. 

  2058.     srcRange = handle_jpeg(&srcFormat);

  2059.     dstRange = handle_jpeg(&dstFormat);

  2060. 

  2061.     if (!isSupportedIn(srcFormat))

  2062.     {

  2063.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));

  2064.         return NULL;

  2065.     }

  2066.     if (!isSupportedOut(dstFormat))

  2067.     {

  2068.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));

  2069.         return NULL;

  2070.     }

  2071. 

  2072.     /* sanity check */

  2073.     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

  2074.     {

  2075.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2076.                srcW, srcH, dstW, dstH);

  2077.         return NULL;

  2078.     }

  2079.     if(srcW > VOFW || dstW > VOFW){

  2080.         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile time max width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");

  2081.         return NULL;

  2082.     }

  2083. 

  2084.     if (!dstFilter) dstFilter= &dummyFilter;

  2085.     if (!srcFilter) srcFilter= &dummyFilter;

  2086. 

  2087.     c= av_mallocz(sizeof(SwsContext));

  2088. 

  2089.     c->av_class = &sws_context_class;

  2090.     c->srcW= srcW;

  2091.     c->srcH= srcH;

  2092.     c->dstW= dstW;

  2093.     c->dstH= dstH;

  2094.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2095.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2096.     c->flags= flags;

  2097.     c->dstFormat= dstFormat;

  2098.     c->srcFormat= srcFormat;

  2099.     c->vRounder= 4* 0x0001000100010001ULL;

  2100. 

  2101.     usesHFilter= usesVFilter= 0;

  2102.     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;

  2103.     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;

  2104.     if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;

  2105.     if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;

  2106.     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;

  2107.     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;

  2108.     if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;

  2109.     if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;

  2110. 

  2111.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2112.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2113. 

  2114.     // reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation

  2115.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2116. 

  2117.     // drop some chroma lines if the user wants it

  2118.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2119.     c->chrSrcVSubSample+= c->vChrDrop;

  2120. 

  2121.     // drop every 2. pixel for chroma calculation unless user wants full chroma

  2122.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2123.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2124.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2125.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE)

  2126.         c->chrSrcHSubSample=1;

  2127. 

  2128.     if (param){

  2129.         c->param[0] = param[0];

  2130.         c->param[1] = param[1];

  2131.     }else{

  2132.         c->param[0] =

  2133.         c->param[1] = SWS_PARAM_DEFAULT;

  2134.     }

  2135. 

  2136.     c->chrIntHSubSample= c->chrDstHSubSample;

  2137.     c->chrIntVSubSample= c->chrSrcVSubSample;

  2138. 

  2139.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2140.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2141.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2142.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2143.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2144. 

  2145.     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);

  2146. 

  2147.     /* unscaled special Cases */

  2148.     if (unscaled && !usesHFilter && !usesVFilter)

  2149.     {

  2150.         /* yv12_to_nv12 */

  2151.         if (srcFormat == PIX_FMT_YUV420P && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))

  2152.         {

  2153.             c->swScale= PlanarToNV12Wrapper;

  2154.         }

  2155. #ifdef CONFIG_GPL

  2156.         /* yuv2bgr */

  2157.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P) && (isBGR(dstFormat) || isRGB(dstFormat)))

  2158.         {

  2159.             c->swScale= yuv2rgb_get_func_ptr(c);

  2160.         }

  2161. #endif

  2162. 

  2163.         if (srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P)

  2164.         {

  2165.             c->swScale= yvu9toyv12Wrapper;

  2166.         }

  2167. 

  2168.         /* bgr24toYV12 */

  2169.         if (srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P)

  2170.             c->swScale= bgr24toyv12Wrapper;

  2171. 

  2172.         /* rgb/bgr -> rgb/bgr (no dither needed forms) */

  2173.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2174.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2175.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2176.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2177.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2178.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2179.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2180.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2181.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2182.            && !needsDither)

  2183.              c->swScale= rgb2rgbWrapper;

  2184. 

  2185.         /* LQ converters if -sws 0 or -sws 4*/

  2186.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){

  2187.             /* rgb/bgr -> rgb/bgr (dither needed forms) */

  2188.             if ( (isBGR(srcFormat) || isRGB(srcFormat))

  2189.               && (isBGR(dstFormat) || isRGB(dstFormat))

  2190.               && needsDither)

  2191.                 c->swScale= rgb2rgbWrapper;

  2192. 

  2193.             /* yv12_to_yuy2 */

  2194.             if (srcFormat == PIX_FMT_YUV420P &&

  2195.                 (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422))

  2196.             {

  2197.                 if (dstFormat == PIX_FMT_YUYV422)

  2198.                     c->swScale= PlanarToYuy2Wrapper;

  2199.                 else

  2200.                     c->swScale= PlanarToUyvyWrapper;

  2201.             }

  2202.         }

  2203. 

  2204. #ifdef COMPILE_ALTIVEC

  2205.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2206.             ((srcFormat == PIX_FMT_YUV420P &&

  2207.              (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422)))) {

  2208.           // unscaled YV12 -> packed YUV, we want speed

  2209.           if (dstFormat == PIX_FMT_YUYV422)

  2210.               c->swScale= yv12toyuy2_unscaled_altivec;

  2211.           else

  2212.               c->swScale= yv12touyvy_unscaled_altivec;

  2213.         }

  2214. #endif

  2215. 

  2216.         /* simple copy */

  2217.         if (  srcFormat == dstFormat

  2218.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2219.             || (isPlanarYUV(dstFormat) && isGray(srcFormat)))

  2220.         {

  2221.             c->swScale= simpleCopy;

  2222.         }

  2223. 

  2224.         /* gray16{le,be} conversions */

  2225.         if (isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))

  2226.         {

  2227.             c->swScale= gray16togray;

  2228.         }

  2229.         if ((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))

  2230.         {

  2231.             c->swScale= graytogray16;

  2232.         }

  2233.         if (srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))

  2234.         {

  2235.             c->swScale= gray16swap;

  2236.         }

  2237. 

  2238. #ifdef ARCH_BFIN

  2239.         if (flags & SWS_CPU_CAPS_BFIN)

  2240.             ff_bfin_get_unscaled_swscale (c);

  2241. #endif

  2242. 

  2243.         if (c->swScale){

  2244.             if (flags&SWS_PRINT_INFO)

  2245.                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",

  2246.                                 sws_format_name(srcFormat), sws_format_name(dstFormat));

  2247.             return c;

  2248.         }

  2249.     }

  2250. 

  2251.     if (flags & SWS_CPU_CAPS_MMX2)

  2252.     {

  2253.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2254.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))

  2255.         {

  2256.             if (flags&SWS_PRINT_INFO)

  2257.                 av_log(c, AV_LOG_INFO, "output Width is not a multiple of 32 -> no MMX2 scaler\n");

  2258.         }

  2259.         if (usesHFilter) c->canMMX2BeUsed=0;

  2260.     }

  2261.     else

  2262.         c->canMMX2BeUsed=0;

  2263. 

  2264.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2265.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2266. 

  2267.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2268.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2269.     // n-2 is the last chrominance sample available

  2270.     // this is not perfect, but no one should notice the difference, the more correct variant

  2271.     // would be like the vertical one, but that would require some special code for the

  2272.     // first and last pixel

  2273.     if (flags&SWS_FAST_BILINEAR)

  2274.     {

  2275.         if (c->canMMX2BeUsed)

  2276.         {

  2277.             c->lumXInc+= 20;

  2278.             c->chrXInc+= 20;

  2279.         }

  2280.         //we don't use the x86asm scaler if mmx is available

  2281.         else if (flags & SWS_CPU_CAPS_MMX)

  2282.         {

  2283.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2284.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2285.         }

  2286.     }

  2287. 

  2288.     /* precalculate horizontal scaler filter coefficients */

  2289.     {

  2290.         const int filterAlign=

  2291.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2292.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2293.             1;

  2294. 

  2295.         initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2296.                    srcW      ,       dstW, filterAlign, 1<<14,

  2297.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2298.                    srcFilter->lumH, dstFilter->lumH, c->param);

  2299.         initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2300.                    c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2301.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2302.                    srcFilter->chrH, dstFilter->chrH, c->param);

  2303. 

  2304. #define MAX_FUNNY_CODE_SIZE 10000

  2305. #if defined(COMPILE_MMX2)

  2306. // can't downscale !!!

  2307.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))

  2308.         {

  2309. #ifdef MAP_ANONYMOUS

  2310.             c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2311.             c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2312. #else

  2313.             c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2314.             c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2315. #endif

  2316. 

  2317.             c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));

  2318.             c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));

  2319.             c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));

  2320.             c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));

  2321. 

  2322.             initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2323.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2324.         }

  2325. #endif /* defined(COMPILE_MMX2) */

  2326.     } // Init Horizontal stuff

  2327. 

  2328. 

  2329. 

  2330.     /* precalculate vertical scaler filter coefficients */

  2331.     {

  2332.         const int filterAlign=

  2333.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2334.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2335.             1;

  2336. 

  2337.         initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2338.                    srcH      ,        dstH, filterAlign, (1<<12)-4,

  2339.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2340.                    srcFilter->lumV, dstFilter->lumV, c->param);

  2341.         initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2342.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12)-4,

  2343.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2344.                    srcFilter->chrV, dstFilter->chrV, c->param);

  2345. 

  2346. #ifdef HAVE_ALTIVEC

  2347.         c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);

  2348.         c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);

  2349. 

  2350.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2351.             int j;

  2352.             short *p = (short *)&c->vYCoeffsBank[i];

  2353.             for (j=0;j<8;j++)

  2354.                 p[j] = c->vLumFilter[i];

  2355.         }

  2356. 

  2357.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2358.             int j;

  2359.             short *p = (short *)&c->vCCoeffsBank[i];

  2360.             for (j=0;j<8;j++)

  2361.                 p[j] = c->vChrFilter[i];

  2362.         }

  2363. #endif

  2364.     }

  2365. 

  2366.     // Calculate Buffer Sizes so that they won't run out while handling these damn slices

  2367.     c->vLumBufSize= c->vLumFilterSize;

  2368.     c->vChrBufSize= c->vChrFilterSize;

  2369.     for (i=0; i<dstH; i++)

  2370.     {

  2371.         int chrI= i*c->chrDstH / dstH;

  2372.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2373.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2374. 

  2375.         nextSlice>>= c->chrSrcVSubSample;

  2376.         nextSlice<<= c->chrSrcVSubSample;

  2377.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2378.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];

  2379.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2380.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2381.     }

  2382. 

  2383.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2384.     c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2385.     c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));

  2386.     //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)

  2387.     /* align at 16 bytes for AltiVec */

  2388.     for (i=0; i<c->vLumBufSize; i++)

  2389.         c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2390.     for (i=0; i<c->vChrBufSize; i++)

  2391.         c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);

  2392. 

  2393.     //try to avoid drawing green stuff between the right end and the stride end

  2394.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);

  2395. 

  2396.     assert(2*VOFW == VOF);

  2397. 

  2398.     ASSERT(c->chrDstH <= dstH)

  2399. 

  2400.     if (flags&SWS_PRINT_INFO)

  2401.     {

  2402. #ifdef DITHER1XBPP

  2403.         char *dither= " dithered";

  2404. #else

  2405.         char *dither= "";

  2406. #endif

  2407.         if (flags&SWS_FAST_BILINEAR)

  2408.             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");

  2409.         else if (flags&SWS_BILINEAR)

  2410.             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");

  2411.         else if (flags&SWS_BICUBIC)

  2412.             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");

  2413.         else if (flags&SWS_X)

  2414.             av_log(c, AV_LOG_INFO, "Experimental scaler, ");

  2415.         else if (flags&SWS_POINT)

  2416.             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");

  2417.         else if (flags&SWS_AREA)

  2418.             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");

  2419.         else if (flags&SWS_BICUBLIN)

  2420.             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");

  2421.         else if (flags&SWS_GAUSS)

  2422.             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");

  2423.         else if (flags&SWS_SINC)

  2424.             av_log(c, AV_LOG_INFO, "Sinc scaler, ");

  2425.         else if (flags&SWS_LANCZOS)

  2426.             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");

  2427.         else if (flags&SWS_SPLINE)

  2428.             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");

  2429.         else

  2430.             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");

  2431. 

  2432.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2433.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  2434.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2435.         else

  2436.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  2437.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  2438. 

  2439.         if (flags & SWS_CPU_CAPS_MMX2)

  2440.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  2441.         else if (flags & SWS_CPU_CAPS_3DNOW)

  2442.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  2443.         else if (flags & SWS_CPU_CAPS_MMX)

  2444.             av_log(c, AV_LOG_INFO, "using MMX\n");

  2445.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  2446.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  2447.         else

  2448.             av_log(c, AV_LOG_INFO, "using C\n");

  2449.     }

  2450. 

  2451.     if (flags & SWS_PRINT_INFO)

  2452.     {

  2453.         if (flags & SWS_CPU_CAPS_MMX)

  2454.         {

  2455.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2456.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  2457.             else

  2458.             {

  2459.                 if (c->hLumFilterSize==4)

  2460.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");

  2461.                 else if (c->hLumFilterSize==8)

  2462.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");

  2463.                 else

  2464.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");

  2465. 

  2466.                 if (c->hChrFilterSize==4)

  2467.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");

  2468.                 else if (c->hChrFilterSize==8)

  2469.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");

  2470.                 else

  2471.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");

  2472.             }

  2473.         }

  2474.         else

  2475.         {

  2476. #if defined(ARCH_X86)

  2477.             av_log(c, AV_LOG_VERBOSE, "using X86-Asm scaler for horizontal scaling\n");

  2478. #else

  2479.             if (flags & SWS_FAST_BILINEAR)

  2480.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");

  2481.             else

  2482.                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");

  2483. #endif

  2484.         }

  2485.         if (isPlanarYUV(dstFormat))

  2486.         {

  2487.             if (c->vLumFilterSize==1)

  2488.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2489.             else

  2490.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2491.         }

  2492.         else

  2493.         {

  2494.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  2495.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  2496.                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2497.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  2498.                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2499.             else

  2500.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2501.         }

  2502. 

  2503.         if (dstFormat==PIX_FMT_BGR24)

  2504.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 Converter\n",

  2505.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  2506.         else if (dstFormat==PIX_FMT_RGB32)

  2507.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2508.         else if (dstFormat==PIX_FMT_BGR565)

  2509.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2510.         else if (dstFormat==PIX_FMT_BGR555)

  2511.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2512. 

  2513.         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  2514.     }

  2515.     if (flags & SWS_PRINT_INFO)

  2516.     {

  2517.         av_log(c, AV_LOG_DEBUG, "Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2518.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  2519.         av_log(c, AV_LOG_DEBUG, "Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2520.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  2521.     }

  2522. 

  2523.     c->swScale= getSwsFunc(flags);

  2524.     return c;

  2525. }

  2526. 

  2527. /**

  2528.  * swscale wrapper, so we don't need to export the SwsContext.

  2529.  * assumes planar YUV to be in YUV order instead of YVU

  2530.  */

  2531. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2532.               int srcSliceH, uint8_t* dst[], int dstStride[]){

  2533.     int i;

  2534.     uint8_t* src2[4]= {src[0], src[1], src[2]};

  2535.     uint32_t pal[256];

  2536.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  2537.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  2538.         return 0;

  2539.     }

  2540.     if (c->sliceDir == 0) {

  2541.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  2542.     }

  2543. 

  2544.     if (c->srcFormat == PIX_FMT_PAL8){

  2545.         for (i=0; i<256; i++){

  2546.             int p= ((uint32_t*)(src[1]))[i];

  2547.             int r= (p>>16)&0xFF;

  2548.             int g= (p>> 8)&0xFF;

  2549.             int b=  p     &0xFF;

  2550.             int y= av_clip_uint8(((RY*r + GY*g + BY*b)>>RGB2YUV_SHIFT) + 16 );

  2551.             int u= av_clip_uint8(((RU*r + GU*g + BU*b)>>RGB2YUV_SHIFT) + 128);

  2552.             int v= av_clip_uint8(((RV*r + GV*g + BV*b)>>RGB2YUV_SHIFT) + 128);

  2553.             pal[i]= y + (u<<8) + (v<<16);

  2554.         }

  2555.         src2[1]= pal;

  2556.     }

  2557. 

  2558.     // copy strides, so they can safely be modified

  2559.     if (c->sliceDir == 1) {

  2560.         // slices go from top to bottom

  2561.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2]};

  2562.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2]};

  2563.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);

  2564.     } else {

  2565.         // slices go from bottom to top => we flip the image internally

  2566.         uint8_t* dst2[4]= {dst[0] + (c->dstH-1)*dstStride[0],

  2567.                            dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],

  2568.                            dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};

  2569.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2]};

  2570.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]};

  2571. 

  2572.         src2[0] += (srcSliceH-1)*srcStride[0];

  2573.         if (c->srcFormat != PIX_FMT_PAL8)

  2574.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  2575.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  2576. 

  2577.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  2578.     }

  2579. }

  2580. 

  2581. /**

  2582.  * swscale wrapper, so we don't need to export the SwsContext

  2583.  */

  2584. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2585.                       int srcSliceH, uint8_t* dst[], int dstStride[]){

  2586.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  2587. }

  2588. 

  2589. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  2590.                                 float lumaSharpen, float chromaSharpen,

  2591.                                 float chromaHShift, float chromaVShift,

  2592.                                 int verbose)

  2593. {

  2594.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  2595. 

  2596.     if (lumaGBlur!=0.0){

  2597.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  2598.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  2599.     }else{

  2600.         filter->lumH= sws_getIdentityVec();

  2601.         filter->lumV= sws_getIdentityVec();

  2602.     }

  2603. 

  2604.     if (chromaGBlur!=0.0){

  2605.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  2606.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  2607.     }else{

  2608.         filter->chrH= sws_getIdentityVec();

  2609.         filter->chrV= sws_getIdentityVec();

  2610.     }

  2611. 

  2612.     if (chromaSharpen!=0.0){

  2613.         SwsVector *id= sws_getIdentityVec();

  2614.         sws_scaleVec(filter->chrH, -chromaSharpen);

  2615.         sws_scaleVec(filter->chrV, -chromaSharpen);

  2616.         sws_addVec(filter->chrH, id);

  2617.         sws_addVec(filter->chrV, id);

  2618.         sws_freeVec(id);

  2619.     }

  2620. 

  2621.     if (lumaSharpen!=0.0){

  2622.         SwsVector *id= sws_getIdentityVec();

  2623.         sws_scaleVec(filter->lumH, -lumaSharpen);

  2624.         sws_scaleVec(filter->lumV, -lumaSharpen);

  2625.         sws_addVec(filter->lumH, id);

  2626.         sws_addVec(filter->lumV, id);

  2627.         sws_freeVec(id);

  2628.     }

  2629. 

  2630.     if (chromaHShift != 0.0)

  2631.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  2632. 

  2633.     if (chromaVShift != 0.0)

  2634.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  2635. 

  2636.     sws_normalizeVec(filter->chrH, 1.0);

  2637.     sws_normalizeVec(filter->chrV, 1.0);

  2638.     sws_normalizeVec(filter->lumH, 1.0);

  2639.     sws_normalizeVec(filter->lumV, 1.0);

  2640. 

  2641.     if (verbose) sws_printVec(filter->chrH);

  2642.     if (verbose) sws_printVec(filter->lumH);

  2643. 

  2644.     return filter;

  2645. }

  2646. 

  2647. /**

  2648.  * returns a normalized gaussian curve used to filter stuff

  2649.  * quality=3 is high quality, lowwer is lowwer quality

  2650.  */

  2651. SwsVector *sws_getGaussianVec(double variance, double quality){

  2652.     const int length= (int)(variance*quality + 0.5) | 1;

  2653.     int i;

  2654.     double *coeff= av_malloc(length*sizeof(double));

  2655.     double middle= (length-1)*0.5;

  2656.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2657. 

  2658.     vec->coeff= coeff;

  2659.     vec->length= length;

  2660. 

  2661.     for (i=0; i<length; i++)

  2662.     {

  2663.         double dist= i-middle;

  2664.         coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);

  2665.     }

  2666. 

  2667.     sws_normalizeVec(vec, 1.0);

  2668. 

  2669.     return vec;

  2670. }

  2671. 

  2672. SwsVector *sws_getConstVec(double c, int length){

  2673.     int i;

  2674.     double *coeff= av_malloc(length*sizeof(double));

  2675.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2676. 

  2677.     vec->coeff= coeff;

  2678.     vec->length= length;

  2679. 

  2680.     for (i=0; i<length; i++)

  2681.         coeff[i]= c;

  2682. 

  2683.     return vec;

  2684. }

  2685. 

  2686. 

  2687. SwsVector *sws_getIdentityVec(void){

  2688.     return sws_getConstVec(1.0, 1);

  2689. }

  2690. 

  2691. double sws_dcVec(SwsVector *a){

  2692.     int i;

  2693.     double sum=0;

  2694. 

  2695.     for (i=0; i<a->length; i++)

  2696.         sum+= a->coeff[i];

  2697. 

  2698.     return sum;

  2699. }

  2700. 

  2701. void sws_scaleVec(SwsVector *a, double scalar){

  2702.     int i;

  2703. 

  2704.     for (i=0; i<a->length; i++)

  2705.         a->coeff[i]*= scalar;

  2706. }

  2707. 

  2708. void sws_normalizeVec(SwsVector *a, double height){

  2709.     sws_scaleVec(a, height/sws_dcVec(a));

  2710. }

  2711. 

  2712. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){

  2713.     int length= a->length + b->length - 1;

  2714.     double *coeff= av_malloc(length*sizeof(double));

  2715.     int i, j;

  2716.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2717. 

  2718.     vec->coeff= coeff;

  2719.     vec->length= length;

  2720. 

  2721.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2722. 

  2723.     for (i=0; i<a->length; i++)

  2724.     {

  2725.         for (j=0; j<b->length; j++)

  2726.         {

  2727.             coeff[i+j]+= a->coeff[i]*b->coeff[j];

  2728.         }

  2729.     }

  2730. 

  2731.     return vec;

  2732. }

  2733. 

  2734. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){

  2735.     int length= FFMAX(a->length, b->length);

  2736.     double *coeff= av_malloc(length*sizeof(double));

  2737.     int i;

  2738.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2739. 

  2740.     vec->coeff= coeff;

  2741.     vec->length= length;

  2742. 

  2743.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2744. 

  2745.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2746.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  2747. 

  2748.     return vec;

  2749. }

  2750. 

  2751. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){

  2752.     int length= FFMAX(a->length, b->length);

  2753.     double *coeff= av_malloc(length*sizeof(double));

  2754.     int i;

  2755.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2756. 

  2757.     vec->coeff= coeff;

  2758.     vec->length= length;

  2759. 

  2760.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2761. 

  2762.     for (i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2763.     for (i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  2764. 

  2765.     return vec;

  2766. }

  2767. 

  2768. /* shift left / or right if "shift" is negative */

  2769. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){

  2770.     int length= a->length + FFABS(shift)*2;

  2771.     double *coeff= av_malloc(length*sizeof(double));

  2772.     int i;

  2773.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2774. 

  2775.     vec->coeff= coeff;

  2776.     vec->length= length;

  2777. 

  2778.     for (i=0; i<length; i++) coeff[i]= 0.0;

  2779. 

  2780.     for (i=0; i<a->length; i++)

  2781.     {

  2782.         coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  2783.     }

  2784. 

  2785.     return vec;

  2786. }

  2787. 

  2788. void sws_shiftVec(SwsVector *a, int shift){

  2789.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  2790.     av_free(a->coeff);

  2791.     a->coeff= shifted->coeff;

  2792.     a->length= shifted->length;

  2793.     av_free(shifted);

  2794. }

  2795. 

  2796. void sws_addVec(SwsVector *a, SwsVector *b){

  2797.     SwsVector *sum= sws_sumVec(a, b);

  2798.     av_free(a->coeff);

  2799.     a->coeff= sum->coeff;

  2800.     a->length= sum->length;

  2801.     av_free(sum);

  2802. }

  2803. 

  2804. void sws_subVec(SwsVector *a, SwsVector *b){

  2805.     SwsVector *diff= sws_diffVec(a, b);

  2806.     av_free(a->coeff);

  2807.     a->coeff= diff->coeff;

  2808.     a->length= diff->length;

  2809.     av_free(diff);

  2810. }

  2811. 

  2812. void sws_convVec(SwsVector *a, SwsVector *b){

  2813.     SwsVector *conv= sws_getConvVec(a, b);

  2814.     av_free(a->coeff);

  2815.     a->coeff= conv->coeff;

  2816.     a->length= conv->length;

  2817.     av_free(conv);

  2818. }

  2819. 

  2820. SwsVector *sws_cloneVec(SwsVector *a){

  2821.     double *coeff= av_malloc(a->length*sizeof(double));

  2822.     int i;

  2823.     SwsVector *vec= av_malloc(sizeof(SwsVector));

  2824. 

  2825.     vec->coeff= coeff;

  2826.     vec->length= a->length;

  2827. 

  2828.     for (i=0; i<a->length; i++) coeff[i]= a->coeff[i];

  2829. 

  2830.     return vec;

  2831. }

  2832. 

  2833. void sws_printVec(SwsVector *a){

  2834.     int i;

  2835.     double max=0;

  2836.     double min=0;

  2837.     double range;

  2838. 

  2839.     for (i=0; i<a->length; i++)

  2840.         if (a->coeff[i]>max) max= a->coeff[i];

  2841. 

  2842.     for (i=0; i<a->length; i++)

  2843.         if (a->coeff[i]<min) min= a->coeff[i];

  2844. 

  2845.     range= max - min;

  2846. 

  2847.     for (i=0; i<a->length; i++)

  2848.     {

  2849.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  2850.         av_log(NULL, AV_LOG_DEBUG, "%1.3f ", a->coeff[i]);

  2851.         for (;x>0; x--) av_log(NULL, AV_LOG_DEBUG, " ");

  2852.         av_log(NULL, AV_LOG_DEBUG, "|\n");

  2853.     }

  2854. }

  2855. 

  2856. void sws_freeVec(SwsVector *a){

  2857.     if (!a) return;

  2858.     av_free(a->coeff);

  2859.     a->coeff=NULL;

  2860.     a->length=0;

  2861.     av_free(a);

  2862. }

  2863. 

  2864. void sws_freeFilter(SwsFilter *filter){

  2865.     if (!filter) return;

  2866. 

  2867.     if (filter->lumH) sws_freeVec(filter->lumH);

  2868.     if (filter->lumV) sws_freeVec(filter->lumV);

  2869.     if (filter->chrH) sws_freeVec(filter->chrH);

  2870.     if (filter->chrV) sws_freeVec(filter->chrV);

  2871.     av_free(filter);

  2872. }

  2873. 

  2874. 

  2875. void sws_freeContext(SwsContext *c){

  2876.     int i;

  2877.     if (!c) return;

  2878. 

  2879.     if (c->lumPixBuf)

  2880.     {

  2881.         for (i=0; i<c->vLumBufSize; i++)

  2882.         {

  2883.             av_free(c->lumPixBuf[i]);

  2884.             c->lumPixBuf[i]=NULL;

  2885.         }

  2886.         av_free(c->lumPixBuf);

  2887.         c->lumPixBuf=NULL;

  2888.     }

  2889. 

  2890.     if (c->chrPixBuf)

  2891.     {

  2892.         for (i=0; i<c->vChrBufSize; i++)

  2893.         {

  2894.             av_free(c->chrPixBuf[i]);

  2895.             c->chrPixBuf[i]=NULL;

  2896.         }

  2897.         av_free(c->chrPixBuf);

  2898.         c->chrPixBuf=NULL;

  2899.     }

  2900. 

  2901.     av_free(c->vLumFilter);

  2902.     c->vLumFilter = NULL;

  2903.     av_free(c->vChrFilter);

  2904.     c->vChrFilter = NULL;

  2905.     av_free(c->hLumFilter);

  2906.     c->hLumFilter = NULL;

  2907.     av_free(c->hChrFilter);

  2908.     c->hChrFilter = NULL;

  2909. #ifdef HAVE_ALTIVEC

  2910.     av_free(c->vYCoeffsBank);

  2911.     c->vYCoeffsBank = NULL;

  2912.     av_free(c->vCCoeffsBank);

  2913.     c->vCCoeffsBank = NULL;

  2914. #endif

  2915. 

  2916.     av_free(c->vLumFilterPos);

  2917.     c->vLumFilterPos = NULL;

  2918.     av_free(c->vChrFilterPos);

  2919.     c->vChrFilterPos = NULL;

  2920.     av_free(c->hLumFilterPos);

  2921.     c->hLumFilterPos = NULL;

  2922.     av_free(c->hChrFilterPos);

  2923.     c->hChrFilterPos = NULL;

  2924. 

  2925. #if defined(ARCH_X86) && defined(CONFIG_GPL)

  2926. #ifdef MAP_ANONYMOUS

  2927.     if (c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);

  2928.     if (c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);

  2929. #else

  2930.     av_free(c->funnyYCode);

  2931.     av_free(c->funnyUVCode);

  2932. #endif

  2933.     c->funnyYCode=NULL;

  2934.     c->funnyUVCode=NULL;

  2935. #endif /* defined(ARCH_X86) */

  2936. 

  2937.     av_free(c->lumMmx2Filter);

  2938.     c->lumMmx2Filter=NULL;

  2939.     av_free(c->chrMmx2Filter);

  2940.     c->chrMmx2Filter=NULL;

  2941.     av_free(c->lumMmx2FilterPos);

  2942.     c->lumMmx2FilterPos=NULL;

  2943.     av_free(c->chrMmx2FilterPos);

  2944.     c->chrMmx2FilterPos=NULL;

  2945.     av_free(c->yuvTable);

  2946.     c->yuvTable=NULL;

  2947. 

  2948.     av_free(c);

  2949. }

  2950. 

  2951. /**

  2952.  * Checks if context is valid or reallocs a new one instead.

  2953.  * If context is NULL, just calls sws_getContext() to get a new one.

  2954.  * Otherwise, checks if the parameters are the same already saved in context.

  2955.  * If that is the case, returns the current context.

  2956.  * Otherwise, frees context and gets a new one.

  2957.  *

  2958.  * Be warned that srcFilter, dstFilter are not checked, they are

  2959.  * asumed to remain valid.

  2960.  */

  2961. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  2962.                                         int srcW, int srcH, int srcFormat,

  2963.                                         int dstW, int dstH, int dstFormat, int flags,

  2964.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)

  2965. {

  2966.     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};

  2967. 

  2968.     if (!param)

  2969.         param = default_param;

  2970. 

  2971.     if (context) {

  2972.         if (context->srcW != srcW || context->srcH != srcH ||

  2973.             context->srcFormat != srcFormat ||

  2974.             context->dstW != dstW || context->dstH != dstH ||

  2975.             context->dstFormat != dstFormat || context->flags != flags ||

  2976.             context->param[0] != param[0] || context->param[1] != param[1])

  2977.         {

  2978.             sws_freeContext(context);

  2979.             context = NULL;

  2980.         }

  2981.     }

  2982.     if (!context) {

  2983.         return sws_getContext(srcW, srcH, srcFormat,

  2984.                               dstW, dstH, dstFormat, flags,

  2985.                               srcFilter, dstFilter, param);

  2986.     }

  2987.     return context;

  2988. }