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FFmpeg/libswscale/swscale.c

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  1. /*

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

  3.  *

  4.  * This file is part of FFmpeg.

  5.  *

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

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

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

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

  10.  *

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

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

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

  14.  * GNU General Public License for more details.

  15.  *

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

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

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

  19.  *

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

  21.  * under the LGPL license too

  22.  */

  23. 

  24. /*

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

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

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

  28. 

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

  30.   YV12 -> {BGR,RGB}{1,4,8,12,15,16,24,32}

  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 "config.h"

  62. #include <assert.h>

  63. #include "swscale.h"

  64. #include "swscale_internal.h"

  65. #include "rgb2rgb.h"

  66. #include "libavutil/intreadwrite.h"

  67. #include "libavutil/x86_cpu.h"

  68. #include "libavutil/avutil.h"

  69. #include "libavutil/bswap.h"

  70. #include "libavutil/pixdesc.h"

  71. 

  72. #undef MOVNTQ

  73. #undef PAVGB

  74. 

  75. //#undef HAVE_MMX2

  76. //#define HAVE_AMD3DNOW

  77. //#undef HAVE_MMX

  78. //#undef ARCH_X86

  79. #define DITHER1XBPP

  80. 

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

  82. 

  83. #ifdef M_PI

  84. #define PI M_PI

  85. #else

  86. #define PI 3.14159265358979323846

  87. #endif

  88. 

  89. #define isPacked(x)         (       \

  90.            (x)==PIX_FMT_PAL8        \

  91.         || (x)==PIX_FMT_YUYV422     \

  92.         || (x)==PIX_FMT_UYVY422     \

  93.         || isAnyRGB(x)              \

  94.     )

  95. 

  96. #define RGB2YUV_SHIFT 15

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

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

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

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

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

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

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

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

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

  106. 

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

  108.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  109.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  110.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  111.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  112.     {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC

  113.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  114.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //SMPTE 170M

  115.     {0.701 , 0.087 , 0.212 , -0.384, 0.5  -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M

  116. };

  117. 

  118. /*

  119. NOTES

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

  121. 

  122. TODO

  123. more intelligent misalignment avoidance for the horizontal scaler

  124. write special vertical cubic upscale version

  125. optimize C code (YV12 / minmax)

  126. add support for packed pixel YUV input & output

  127. add support for Y8 output

  128. optimize BGR24 & BGR32

  129. add BGR4 output support

  130. write special BGR->BGR scaler

  131. */

  132. 

  133. #if ARCH_X86 && CONFIG_GPL

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

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

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

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

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

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

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

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

  142. 

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

  144.         0x0103010301030103LL,

  145.         0x0200020002000200LL,};

  146. 

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

  148.         0x0602060206020602LL,

  149.         0x0004000400040004LL,};

  150. 

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

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

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

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

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

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

  157. 

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

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

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

  161. 

  162. #ifdef FAST_BGR2YV12

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

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

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

  166. #else

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

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

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

  170. #endif /* FAST_BGR2YV12 */

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

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

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

  174. 

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

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

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

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

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

  180. 

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

  182.     {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},

  183.     {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},

  184. };

  185. 

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

  187. 

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

  189. 

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

  191. {  1,   3,   1,   3,   1,   3,   1,   3, },

  192. {  2,   0,   2,   0,   2,   0,   2,   0, },

  193. };

  194. 

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

  196. {  6,   2,   6,   2,   6,   2,   6,   2, },

  197. {  0,   4,   0,   4,   0,   4,   0,   4, },

  198. };

  199. 

  200. DECLARE_ALIGNED(8, const uint8_t, dither_4x4_16)[4][8]={

  201. {  8,   4,  11,   7,   8,   4,  11,   7, },

  202. {  2,  14,   1,  13,   2,  14,   1,  13, },

  203. { 10,   6,   9,   5,  10,   6,   9,   5, },

  204. {  0,  12,   3,  15,   0,  12,   3,  15, },

  205. };

  206. 

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

  208. { 17,   9,  23,  15,  16,   8,  22,  14, },

  209. {  5,  29,   3,  27,   4,  28,   2,  26, },

  210. { 21,  13,  19,  11,  20,  12,  18,  10, },

  211. {  0,  24,   6,  30,   1,  25,   7,  31, },

  212. { 16,   8,  22,  14,  17,   9,  23,  15, },

  213. {  4,  28,   2,  26,   5,  29,   3,  27, },

  214. { 20,  12,  18,  10,  21,  13,  19,  11, },

  215. {  1,  25,   7,  31,   0,  24,   6,  30, },

  216. };

  217. 

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

  219. {  0,  55,  14,  68,   3,  58,  17,  72, },

  220. { 37,  18,  50,  32,  40,  22,  54,  35, },

  221. {  9,  64,   5,  59,  13,  67,   8,  63, },

  222. { 46,  27,  41,  23,  49,  31,  44,  26, },

  223. {  2,  57,  16,  71,   1,  56,  15,  70, },

  224. { 39,  21,  52,  34,  38,  19,  51,  33, },

  225. { 11,  66,   7,  62,  10,  65,   6,  60, },

  226. { 48,  30,  43,  25,  47,  29,  42,  24, },

  227. };

  228. 

  229. #if 1

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

  231. {117,  62, 158, 103, 113,  58, 155, 100, },

  232. { 34, 199,  21, 186,  31, 196,  17, 182, },

  233. {144,  89, 131,  76, 141,  86, 127,  72, },

  234. {  0, 165,  41, 206,  10, 175,  52, 217, },

  235. {110,  55, 151,  96, 120,  65, 162, 107, },

  236. { 28, 193,  14, 179,  38, 203,  24, 189, },

  237. {138,  83, 124,  69, 148,  93, 134,  79, },

  238. {  7, 172,  48, 213,   3, 168,  45, 210, },

  239. };

  240. #elif 1

  241. // tries to correct a gamma of 1.5

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

  243. {  0, 143,  18, 200,   2, 156,  25, 215, },

  244. { 78,  28, 125,  64,  89,  36, 138,  74, },

  245. { 10, 180,   3, 161,  16, 195,   8, 175, },

  246. {109,  51,  93,  38, 121,  60, 105,  47, },

  247. {  1, 152,  23, 210,   0, 147,  20, 205, },

  248. { 85,  33, 134,  71,  81,  30, 130,  67, },

  249. { 14, 190,   6, 171,  12, 185,   5, 166, },

  250. {117,  57, 101,  44, 113,  54,  97,  41, },

  251. };

  252. #elif 1

  253. // tries to correct a gamma of 2.0

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

  255. {  0, 124,   8, 193,   0, 140,  12, 213, },

  256. { 55,  14, 104,  42,  66,  19, 119,  52, },

  257. {  3, 168,   1, 145,   6, 187,   3, 162, },

  258. { 86,  31,  70,  21,  99,  39,  82,  28, },

  259. {  0, 134,  11, 206,   0, 129,   9, 200, },

  260. { 62,  17, 114,  48,  58,  16, 109,  45, },

  261. {  5, 181,   2, 157,   4, 175,   1, 151, },

  262. { 95,  36,  78,  26,  90,  34,  74,  24, },

  263. };

  264. #else

  265. // tries to correct a gamma of 2.5

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

  267. {  0, 107,   3, 187,   0, 125,   6, 212, },

  268. { 39,   7,  86,  28,  49,  11, 102,  36, },

  269. {  1, 158,   0, 131,   3, 180,   1, 151, },

  270. { 68,  19,  52,  12,  81,  25,  64,  17, },

  271. {  0, 119,   5, 203,   0, 113,   4, 195, },

  272. { 45,   9,  96,  33,  42,   8,  91,  30, },

  273. {  2, 172,   1, 144,   2, 165,   0, 137, },

  274. { 77,  23,  60,  15,  72,  21,  56,  14, },

  275. };

  276. #endif

  277. 

  278. static av_always_inline void yuv2yuvX16inC_template(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

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

  280.                                                     const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest,

  281.                                                     int dstW, int chrDstW, int big_endian)

  282. {

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

  284.     int i;

  285. 

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

  287.         int val = 1 << 10;

  288.         int j;

  289. 

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

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

  292. 

  293.         if (big_endian) {

  294.             AV_WB16(&dest[i], av_clip_uint16(val >> 11));

  295.         } else {

  296.             AV_WL16(&dest[i], av_clip_uint16(val >> 11));

  297.         }

  298.     }

  299. 

  300.     if (uDest) {

  301.         for (i = 0; i < chrDstW; i++) {

  302.             int u = 1 << 10;

  303.             int v = 1 << 10;

  304.             int j;

  305. 

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

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

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

  309.             }

  310. 

  311.             if (big_endian) {

  312.                 AV_WB16(&uDest[i], av_clip_uint16(u >> 11));

  313.                 AV_WB16(&vDest[i], av_clip_uint16(v >> 11));

  314.             } else {

  315.                 AV_WL16(&uDest[i], av_clip_uint16(u >> 11));

  316.                 AV_WL16(&vDest[i], av_clip_uint16(v >> 11));

  317.             }

  318.         }

  319.     }

  320. 

  321.     if (CONFIG_SWSCALE_ALPHA && aDest) {

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

  323.             int val = 1 << 10;

  324.             int j;

  325. 

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

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

  328. 

  329.             if (big_endian) {

  330.                 AV_WB16(&aDest[i], av_clip_uint16(val >> 11));

  331.             } else {

  332.                 AV_WL16(&aDest[i], av_clip_uint16(val >> 11));

  333.             }

  334.         }

  335.     }

  336. }

  337. 

  338. static inline void yuv2yuvX16inC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

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

  340.                                  const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest, int dstW, int chrDstW,

  341.                                  enum PixelFormat dstFormat)

  342. {

  343.     if (isBE(dstFormat)) {

  344.         yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,

  345.                                chrFilter, chrSrc, chrFilterSize,

  346.                                alpSrc,

  347.                                dest, uDest, vDest, aDest,

  348.                                dstW, chrDstW, 1);

  349.     } else {

  350.         yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,

  351.                                chrFilter, chrSrc, chrFilterSize,

  352.                                alpSrc,

  353.                                dest, uDest, vDest, aDest,

  354.                                dstW, chrDstW, 0);

  355.     }

  356. }

  357. 

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

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

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

  361. {

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

  363.     int i;

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

  365.         int val=1<<18;

  366.         int j;

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

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

  369. 

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

  371.     }

  372. 

  373.     if (uDest)

  374.         for (i=0; i<chrDstW; i++) {

  375.             int u=1<<18;

  376.             int v=1<<18;

  377.             int j;

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

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

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

  381.             }

  382. 

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

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

  385.         }

  386. 

  387.     if (CONFIG_SWSCALE_ALPHA && aDest)

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

  389.             int val=1<<18;

  390.             int j;

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

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

  393. 

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

  395.         }

  396. 

  397. }

  398. 

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

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

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

  402. {

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

  404.     int i;

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

  406.         int val=1<<18;

  407.         int j;

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

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

  410. 

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

  412.     }

  413. 

  414.     if (!uDest)

  415.         return;

  416. 

  417.     if (dstFormat == PIX_FMT_NV12)

  418.         for (i=0; i<chrDstW; i++) {

  419.             int u=1<<18;

  420.             int v=1<<18;

  421.             int j;

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

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

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

  425.             }

  426. 

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

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

  429.         }

  430.     else

  431.         for (i=0; i<chrDstW; i++) {

  432.             int u=1<<18;

  433.             int v=1<<18;

  434.             int j;

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

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

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

  438.             }

  439. 

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

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

  442.         }

  443. }

  444. 

  445. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \

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

  447.         int j;\

  448.         int Y1 = 1<<18;\

  449.         int Y2 = 1<<18;\

  450.         int U  = 1<<18;\

  451.         int V  = 1<<18;\

  452.         int av_unused A1, A2;\

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

  454.         const int i2= 2*i;\

  455.         \

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

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

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

  459.         }\

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

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

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

  463.         }\

  464.         Y1>>=19;\

  465.         Y2>>=19;\

  466.         U >>=19;\

  467.         V >>=19;\

  468.         if (alpha) {\

  469.             A1 = 1<<18;\

  470.             A2 = 1<<18;\

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

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

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

  474.             }\

  475.             A1>>=19;\

  476.             A2>>=19;\

  477.         }

  478. 

  479. #define YSCALE_YUV_2_PACKEDX_C(type,alpha) \

  480.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\

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

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

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

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

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

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

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

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

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

  490.         }\

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

  492.             A1=av_clip_uint8(A1);\

  493.             A2=av_clip_uint8(A2);\

  494.         }

  495. 

  496. #define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \

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

  498.         int j;\

  499.         int Y = 0;\

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

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

  502.         int av_unused A;\

  503.         int R,G,B;\

  504.         \

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

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

  507.         }\

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

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

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

  511.         }\

  512.         Y >>=10;\

  513.         U >>=10;\

  514.         V >>=10;\

  515.         if (alpha) {\

  516.             A = rnd;\

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

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

  519.             A >>=19;\

  520.             if (A&256)\

  521.                 A = av_clip_uint8(A);\

  522.         }

  523. 

  524. #define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \

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

  526.         Y-= c->yuv2rgb_y_offset;\

  527.         Y*= c->yuv2rgb_y_coeff;\

  528.         Y+= rnd;\

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

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

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

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

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

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

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

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

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

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

  539.         }

  540. 

  541. #define YSCALE_YUV_2_GRAY16_C \

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

  543.         int j;\

  544.         int Y1 = 1<<18;\

  545.         int Y2 = 1<<18;\

  546.         int U  = 1<<18;\

  547.         int V  = 1<<18;\

  548.         \

  549.         const int i2= 2*i;\

  550.         \

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

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

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

  554.         }\

  555.         Y1>>=11;\

  556.         Y2>>=11;\

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

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

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

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

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

  562.         }

  563. 

  564. #define YSCALE_YUV_2_RGBX_C(type,alpha) \

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

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

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

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

  569. 

  570. #define YSCALE_YUV_2_PACKED2_C(type,alpha)   \

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

  572.         const int i2= 2*i;       \

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

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

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

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

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

  578.         int av_unused A1, A2;                                         \

  579.         if (alpha) {\

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

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

  582.         }

  583. 

  584. #define YSCALE_YUV_2_GRAY16_2_C   \

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

  586.         const int i2= 2*i;       \

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

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

  589. 

  590. #define YSCALE_YUV_2_RGB2_C(type,alpha) \

  591.     YSCALE_YUV_2_PACKED2_C(type,alpha)\

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

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

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

  595. 

  596. #define YSCALE_YUV_2_PACKED1_C(type,alpha) \

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

  598.         const int i2= 2*i;\

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

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

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

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

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

  604.         int av_unused A1, A2;\

  605.         if (alpha) {\

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

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

  608.         }

  609. 

  610. #define YSCALE_YUV_2_GRAY16_1_C \

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

  612.         const int i2= 2*i;\

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

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

  615. 

  616. #define YSCALE_YUV_2_RGB1_C(type,alpha) \

  617.     YSCALE_YUV_2_PACKED1_C(type,alpha)\

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

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

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

  621. 

  622. #define YSCALE_YUV_2_PACKED1B_C(type,alpha) \

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

  624.         const int i2= 2*i;\

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

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

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

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

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

  630.         int av_unused A1, A2;\

  631.         if (alpha) {\

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

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

  634.         }

  635. 

  636. #define YSCALE_YUV_2_RGB1B_C(type,alpha) \

  637.     YSCALE_YUV_2_PACKED1B_C(type,alpha)\

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

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

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

  641. 

  642. #define YSCALE_YUV_2_MONO2_C \

  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]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\

  656.         dest++;\

  657.     }

  658. 

  659. #define YSCALE_YUV_2_MONOX_C \

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

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

  662.     int acc=0;\

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

  664.         int j;\

  665.         int Y1=1<<18;\

  666.         int Y2=1<<18;\

  667. \

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

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

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

  671.         }\

  672.         Y1>>=19;\

  673.         Y2>>=19;\

  674.         if ((Y1|Y2)&256) {\

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

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

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

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

  679.         }\

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

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

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

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

  684.             dest++;\

  685.         }\

  686.     }

  687. 

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

  689.     switch(c->dstFormat) {\

  690.     case PIX_FMT_RGB48BE:\

  691.     case PIX_FMT_RGB48LE:\

  692.         func(uint8_t,0)\

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

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

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

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

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

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

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

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

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

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

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

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

  705.             dest+=12;\

  706.         }\

  707.         break;\

  708.     case PIX_FMT_RGBA:\

  709.     case PIX_FMT_BGRA:\

  710.         if (CONFIG_SMALL) {\

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

  712.             func(uint32_t,needAlpha)\

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

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

  715.             }\

  716.         } else {\

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

  718.                 func(uint32_t,1)\

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

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

  721.                 }\

  722.             } else {\

  723.                 func(uint32_t,0)\

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

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

  726.                 }\

  727.             }\

  728.         }\

  729.         break;\

  730.     case PIX_FMT_ARGB:\

  731.     case PIX_FMT_ABGR:\

  732.         if (CONFIG_SMALL) {\

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

  734.             func(uint32_t,needAlpha)\

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

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

  737.             }\

  738.         } else {\

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

  740.                 func(uint32_t,1)\

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

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

  743.                 }\

  744.             } else {\

  745.                 func(uint32_t,0)\

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

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

  748.                 }\

  749.             }\

  750.         }                \

  751.         break;\

  752.     case PIX_FMT_RGB24:\

  753.         func(uint8_t,0)\

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

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

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

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

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

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

  760.             dest+=6;\

  761.         }\

  762.         break;\

  763.     case PIX_FMT_BGR24:\

  764.         func(uint8_t,0)\

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

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

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

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

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

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

  771.             dest+=6;\

  772.         }\

  773.         break;\

  774.     case PIX_FMT_RGB565BE:\

  775.     case PIX_FMT_RGB565LE:\

  776.     case PIX_FMT_BGR565BE:\

  777.     case PIX_FMT_BGR565LE:\

  778.         {\

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

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

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

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

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

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

  785.             func(uint16_t,0)\

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

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

  788.             }\

  789.         }\

  790.         break;\

  791.     case PIX_FMT_RGB555BE:\

  792.     case PIX_FMT_RGB555LE:\

  793.     case PIX_FMT_BGR555BE:\

  794.     case PIX_FMT_BGR555LE:\

  795.         {\

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

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

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

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

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

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

  802.             func(uint16_t,0)\

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

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

  805.             }\

  806.         }\

  807.         break;\

  808.     case PIX_FMT_RGB8:\

  809.     case PIX_FMT_BGR8:\

  810.         {\

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

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

  813.             func(uint8_t,0)\

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

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

  816.             }\

  817.         }\

  818.         break;\

  819.     case PIX_FMT_RGB4:\

  820.     case PIX_FMT_BGR4:\

  821.         {\

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

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

  824.             func(uint8_t,0)\

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

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

  827.             }\

  828.         }\

  829.         break;\

  830.     case PIX_FMT_RGB4_BYTE:\

  831.     case PIX_FMT_BGR4_BYTE:\

  832.         {\

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

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

  835.             func(uint8_t,0)\

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

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

  838.             }\

  839.         }\

  840.         break;\

  841.     case PIX_FMT_MONOBLACK:\

  842.     case PIX_FMT_MONOWHITE:\

  843.         {\

  844.             func_monoblack\

  845.         }\

  846.         break;\

  847.     case PIX_FMT_YUYV422:\

  848.         func2\

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

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

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

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

  853.         }                \

  854.         break;\

  855.     case PIX_FMT_UYVY422:\

  856.         func2\

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

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

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

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

  861.         }                \

  862.         break;\

  863.     case PIX_FMT_GRAY16BE:\

  864.         func_g16\

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

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

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

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

  869.         }                \

  870.         break;\

  871.     case PIX_FMT_GRAY16LE:\

  872.         func_g16\

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

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

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

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

  877.         }                \

  878.         break;\

  879.     }

  880. 

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

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

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

  884. {

  885.     int i;

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

  887. }

  888. 

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

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

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

  892. {

  893.     int i;

  894.     int step= c->dstFormatBpp/8;

  895.     int aidx= 3;

  896. 

  897.     switch(c->dstFormat) {

  898.     case PIX_FMT_ARGB:

  899.         dest++;

  900.         aidx= 0;

  901.     case PIX_FMT_RGB24:

  902.         aidx--;

  903.     case PIX_FMT_RGBA:

  904.         if (CONFIG_SMALL) {

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

  906.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

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

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

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

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

  911.                 dest+= step;

  912.             }

  913.         } else {

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

  915.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  916.                     dest[aidx]= A;

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

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

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

  920.                     dest+= step;

  921.                 }

  922.             } else {

  923.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  924.                     dest[aidx]= 255;

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

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

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

  928.                     dest+= step;

  929.                 }

  930.             }

  931.         }

  932.         break;

  933.     case PIX_FMT_ABGR:

  934.         dest++;

  935.         aidx= 0;

  936.     case PIX_FMT_BGR24:

  937.         aidx--;

  938.     case PIX_FMT_BGRA:

  939.         if (CONFIG_SMALL) {

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

  941.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

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

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

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

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

  946.                 dest+= step;

  947.             }

  948.         } else {

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

  950.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  951.                     dest[aidx]= A;

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

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

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

  955.                     dest+= step;

  956.                 }

  957.             } else {

  958.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  959.                     dest[aidx]= 255;

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

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

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

  963.                     dest+= step;

  964.                 }

  965.             }

  966.         }

  967.         break;

  968.     default:

  969.         assert(0);

  970.     }

  971. }

  972. 

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

  974. {

  975.     int i;

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

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

  978.         memset(ptr, val, width);

  979.         ptr += stride;

  980.     }

  981. }

  982. 

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

  984.                             uint32_t *unused)

  985. {

  986.     int i;

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

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

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

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

  991. 

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

  993.     }

  994. }

  995. 

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

  997.                              const uint8_t *src1, const uint8_t *src2,

  998.                              int width, uint32_t *unused)

  999. {

  1000.     int i;

  1001.     assert(src1==src2);

  1002.     for (i = 0; i < width; i++) {

  1003.         int r = src1[6*i + 0];

  1004.         int g = src1[6*i + 2];

  1005.         int b = src1[6*i + 4];

  1006. 

  1007.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1008.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1009.     }

  1010. }

  1011. 

  1012. static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1013.                                   const uint8_t *src1, const uint8_t *src2,

  1014.                                   int width, uint32_t *unused)

  1015. {

  1016.     int i;

  1017.     assert(src1==src2);

  1018.     for (i = 0; i < width; i++) {

  1019.         int r= src1[12*i + 0] + src1[12*i + 6];

  1020.         int g= src1[12*i + 2] + src1[12*i + 8];

  1021.         int b= src1[12*i + 4] + src1[12*i + 10];

  1022. 

  1023.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1024.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1025.     }

  1026. }

  1027. 

  1028. #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\

  1029. static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\

  1030. {\

  1031.     int i;\

  1032.     for (i=0; i<width; i++) {\

  1033.         int b= (((const type*)src)[i]>>shb)&maskb;\

  1034.         int g= (((const type*)src)[i]>>shg)&maskg;\

  1035.         int r= (((const type*)src)[i]>>shr)&maskr;\

  1036. \

  1037.         dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\

  1038.     }\

  1039. }

  1040. 

  1041. BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1042. BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1043. BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)

  1044. BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)

  1045. BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)

  1046. BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)

  1047. 

  1048. static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1049. {

  1050.     int i;

  1051.     for (i=0; i<width; i++) {

  1052.         dst[i]= src[4*i];

  1053.     }

  1054. }

  1055. 

  1056. #define BGR2UV(type, name, shr, shg, shb, maska, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S)\

  1057. static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1058. {\

  1059.     int i;\

  1060.     for (i=0; i<width; i++) {\

  1061.         int b= (((const type*)src)[i]&maskb)>>shb;\

  1062.         int g= (((const type*)src)[i]&maskg)>>shg;\

  1063.         int r= (((const type*)src)[i]&maskr)>>shr;\

  1064. \

  1065.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\

  1066.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\

  1067.     }\

  1068. }\

  1069. static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1070. {\

  1071.     int i;\

  1072.     for (i=0; i<width; i++) {\

  1073.         int pix0= ((const type*)src)[2*i+0];\

  1074.         int pix1= ((const type*)src)[2*i+1];\

  1075.         int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\

  1076.         int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\

  1077.         int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\

  1078.         g&= maskg|(2*maskg);\

  1079. \

  1080.         g>>=shg;\

  1081. \

  1082.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\

  1083.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\

  1084.     }\

  1085. }

  1086. 

  1087. BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0xFF000000, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1088. BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0xFF000000,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1089. BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0,          0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)

  1090. BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0,          0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)

  1091. BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0,          0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)

  1092. BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0,          0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)

  1093. 

  1094. static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)

  1095. {

  1096.     int i;

  1097.     for (i=0; i<width; i++) {

  1098.         int d= src[i];

  1099. 

  1100.         dst[i]= pal[d] & 0xFF;

  1101.     }

  1102. }

  1103. 

  1104. static inline void palToUV(uint8_t *dstU, uint8_t *dstV,

  1105.                            const uint8_t *src1, const uint8_t *src2,

  1106.                            long width, uint32_t *pal)

  1107. {

  1108.     int i;

  1109.     assert(src1 == src2);

  1110.     for (i=0; i<width; i++) {

  1111.         int p= pal[src1[i]];

  1112. 

  1113.         dstU[i]= p>>8;

  1114.         dstV[i]= p>>16;

  1115.     }

  1116. }

  1117. 

  1118. static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1119. {

  1120.     int i, j;

  1121.     for (i=0; i<width/8; i++) {

  1122.         int d= ~src[i];

  1123.         for(j=0; j<8; j++)

  1124.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1125.     }

  1126. }

  1127. 

  1128. static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1129. {

  1130.     int i, j;

  1131.     for (i=0; i<width/8; i++) {

  1132.         int d= src[i];

  1133.         for(j=0; j<8; j++)

  1134.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1135.     }

  1136. }

  1137. 

  1138. //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one

  1139. //Plain C versions

  1140. #if ((!HAVE_MMX || !CONFIG_GPL) && !HAVE_ALTIVEC) || CONFIG_RUNTIME_CPUDETECT

  1141. #define COMPILE_C

  1142. #endif

  1143. 

  1144. #if ARCH_PPC

  1145. #if HAVE_ALTIVEC || CONFIG_RUNTIME_CPUDETECT

  1146. #define COMPILE_ALTIVEC

  1147. #endif

  1148. #endif //ARCH_PPC

  1149. 

  1150. #if ARCH_X86

  1151. 

  1152. #if ((HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1153. #define COMPILE_MMX

  1154. #endif

  1155. 

  1156. #if (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1157. #define COMPILE_MMX2

  1158. #endif

  1159. 

  1160. #if ((HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1161. #define COMPILE_3DNOW

  1162. #endif

  1163. #endif //ARCH_X86

  1164. 

  1165. #define COMPILE_TEMPLATE_MMX 0

  1166. #define COMPILE_TEMPLATE_MMX2 0

  1167. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1168. #define COMPILE_TEMPLATE_ALTIVEC 0

  1169. 

  1170. #ifdef COMPILE_C

  1171. #define RENAME(a) a ## _C

  1172. #include "swscale_template.c"

  1173. #endif

  1174. 

  1175. #ifdef COMPILE_ALTIVEC

  1176. #undef RENAME

  1177. #undef COMPILE_TEMPLATE_ALTIVEC

  1178. #define COMPILE_TEMPLATE_ALTIVEC 1

  1179. #define RENAME(a) a ## _altivec

  1180. #include "swscale_template.c"

  1181. #endif

  1182. 

  1183. #if ARCH_X86

  1184. 

  1185. //MMX versions

  1186. #ifdef COMPILE_MMX

  1187. #undef RENAME

  1188. #undef COMPILE_TEMPLATE_MMX

  1189. #undef COMPILE_TEMPLATE_MMX2

  1190. #undef COMPILE_TEMPLATE_AMD3DNOW

  1191. #define COMPILE_TEMPLATE_MMX 1

  1192. #define COMPILE_TEMPLATE_MMX2 0

  1193. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1194. #define RENAME(a) a ## _MMX

  1195. #include "swscale_template.c"

  1196. #endif

  1197. 

  1198. //MMX2 versions

  1199. #ifdef COMPILE_MMX2

  1200. #undef RENAME

  1201. #undef COMPILE_TEMPLATE_MMX

  1202. #undef COMPILE_TEMPLATE_MMX2

  1203. #undef COMPILE_TEMPLATE_AMD3DNOW

  1204. #define COMPILE_TEMPLATE_MMX 1

  1205. #define COMPILE_TEMPLATE_MMX2 1

  1206. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1207. #define RENAME(a) a ## _MMX2

  1208. #include "swscale_template.c"

  1209. #endif

  1210. 

  1211. //3DNOW versions

  1212. #ifdef COMPILE_3DNOW

  1213. #undef RENAME

  1214. #undef COMPILE_TEMPLATE_MMX

  1215. #undef COMPILE_TEMPLATE_MMX2

  1216. #undef COMPILE_TEMPLATE_AMD3DNOW

  1217. #define COMPILE_TEMPLATE_MMX 1

  1218. #define COMPILE_TEMPLATE_MMX2 0

  1219. #define COMPILE_TEMPLATE_AMD3DNOW 1

  1220. #define RENAME(a) a ## _3DNow

  1221. #include "swscale_template.c"

  1222. #endif

  1223. 

  1224. #endif //ARCH_X86

  1225. 

  1226. SwsFunc ff_getSwsFunc(SwsContext *c)

  1227. {

  1228. #if CONFIG_RUNTIME_CPUDETECT

  1229.     int flags = c->flags;

  1230. 

  1231. #if ARCH_X86 && CONFIG_GPL

  1232.     // ordered per speed fastest first

  1233.     if (flags & SWS_CPU_CAPS_MMX2) {

  1234.         sws_init_swScale_MMX2(c);

  1235.         return swScale_MMX2;

  1236.     } else if (flags & SWS_CPU_CAPS_3DNOW) {

  1237.         sws_init_swScale_3DNow(c);

  1238.         return swScale_3DNow;

  1239.     } else if (flags & SWS_CPU_CAPS_MMX) {

  1240.         sws_init_swScale_MMX(c);

  1241.         return swScale_MMX;

  1242.     } else {

  1243.         sws_init_swScale_C(c);

  1244.         return swScale_C;

  1245.     }

  1246. 

  1247. #else

  1248. #if ARCH_PPC

  1249.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1250.         sws_init_swScale_altivec(c);

  1251.         return swScale_altivec;

  1252.     } else {

  1253.         sws_init_swScale_C(c);

  1254.         return swScale_C;

  1255.     }

  1256. #endif

  1257.     sws_init_swScale_C(c);

  1258.     return swScale_C;

  1259. #endif /* ARCH_X86 && CONFIG_GPL */

  1260. #else //CONFIG_RUNTIME_CPUDETECT

  1261. #if   COMPILE_TEMPLATE_MMX2

  1262.     sws_init_swScale_MMX2(c);

  1263.     return swScale_MMX2;

  1264. #elif COMPILE_TEMPLATE_AMD3DNOW

  1265.     sws_init_swScale_3DNow(c);

  1266.     return swScale_3DNow;

  1267. #elif COMPILE_TEMPLATE_MMX

  1268.     sws_init_swScale_MMX(c);

  1269.     return swScale_MMX;

  1270. #elif COMPILE_TEMPLATE_ALTIVEC

  1271.     sws_init_swScale_altivec(c);

  1272.     return swScale_altivec;

  1273. #else

  1274.     sws_init_swScale_C(c);

  1275.     return swScale_C;

  1276. #endif

  1277. #endif //!CONFIG_RUNTIME_CPUDETECT

  1278. }

  1279. 

  1280. static int planarToNv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1281.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1282. {

  1283.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1284.     /* Copy Y plane */

  1285.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1286.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1287.     else {

  1288.         int i;

  1289.         const uint8_t *srcPtr= src[0];

  1290.         uint8_t *dstPtr= dst;

  1291.         for (i=0; i<srcSliceH; i++) {

  1292.             memcpy(dstPtr, srcPtr, c->srcW);

  1293.             srcPtr+= srcStride[0];

  1294.             dstPtr+= dstStride[0];

  1295.         }

  1296.     }

  1297.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1298.     if (c->dstFormat == PIX_FMT_NV12)

  1299.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  1300.     else

  1301.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  1302. 

  1303.     return srcSliceH;

  1304. }

  1305. 

  1306. static int planarToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1307.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1308. {

  1309.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1310. 

  1311.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1312. 

  1313.     return srcSliceH;

  1314. }

  1315. 

  1316. static int planarToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1317.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1318. {

  1319.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1320. 

  1321.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1322. 

  1323.     return srcSliceH;

  1324. }

  1325. 

  1326. static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1327.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1328. {

  1329.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1330. 

  1331.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1332. 

  1333.     return srcSliceH;

  1334. }

  1335. 

  1336. static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1337.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1338. {

  1339.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1340. 

  1341.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1342. 

  1343.     return srcSliceH;

  1344. }

  1345. 

  1346. static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1347.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1348. {

  1349.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1350.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  1351.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  1352. 

  1353.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1354. 

  1355.     if (dstParam[3])

  1356.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1357. 

  1358.     return srcSliceH;

  1359. }

  1360. 

  1361. static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1362.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1363. {

  1364.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1365.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  1366.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  1367. 

  1368.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1369. 

  1370.     return srcSliceH;

  1371. }

  1372. 

  1373. static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1374.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1375. {

  1376.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1377.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  1378.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  1379. 

  1380.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1381. 

  1382.     if (dstParam[3])

  1383.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1384. 

  1385.     return srcSliceH;

  1386. }

  1387. 

  1388. static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1389.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1390. {

  1391.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1392.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  1393.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  1394. 

  1395.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1396. 

  1397.     return srcSliceH;

  1398. }

  1399. 

  1400. static int palToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1401.                            int srcSliceH, uint8_t* dst[], int dstStride[])

  1402. {

  1403.     const enum PixelFormat srcFormat= c->srcFormat;

  1404.     const enum PixelFormat dstFormat= c->dstFormat;

  1405.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  1406.                  const uint8_t *palette)=NULL;

  1407.     int i;

  1408.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1409.     const uint8_t *srcPtr= src[0];

  1410. 

  1411.     if (usePal(srcFormat)) {

  1412.         switch (dstFormat) {

  1413.         case PIX_FMT_RGB32  : conv = palette8topacked32; break;

  1414.         case PIX_FMT_BGR32  : conv = palette8topacked32; break;

  1415.         case PIX_FMT_BGR32_1: conv = palette8topacked32; break;

  1416.         case PIX_FMT_RGB32_1: conv = palette8topacked32; break;

  1417.         case PIX_FMT_RGB24  : conv = palette8topacked24; break;

  1418.         case PIX_FMT_BGR24  : conv = palette8topacked24; break;

  1419.         }

  1420.     }

  1421. 

  1422.     if (!conv)

  1423.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1424.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1425.     else {

  1426.         for (i=0; i<srcSliceH; i++) {

  1427.             conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  1428.             srcPtr+= srcStride[0];

  1429.             dstPtr+= dstStride[0];

  1430.         }

  1431.     }

  1432. 

  1433.     return srcSliceH;

  1434. }

  1435. 

  1436. #define isRGBA32(x) (            \

  1437.            (x) == PIX_FMT_ARGB   \

  1438.         || (x) == PIX_FMT_RGBA   \

  1439.         || (x) == PIX_FMT_BGRA   \

  1440.         || (x) == PIX_FMT_ABGR   \

  1441.         )

  1442. 

  1443. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  1444. static int rgbToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1445.                            int srcSliceH, uint8_t* dst[], int dstStride[])

  1446. {

  1447.     const enum PixelFormat srcFormat= c->srcFormat;

  1448.     const enum PixelFormat dstFormat= c->dstFormat;

  1449.     const int srcBpp= (c->srcFormatBpp + 7) >> 3;

  1450.     const int dstBpp= (c->dstFormatBpp + 7) >> 3;

  1451.     const int srcId= c->srcFormatBpp >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1452.     const int dstId= c->dstFormatBpp >> 2;

  1453.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1454. 

  1455. #define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)

  1456. 

  1457.     if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {

  1458.         if (     CONV_IS(ABGR, RGBA)

  1459.               || CONV_IS(ARGB, BGRA)

  1460.               || CONV_IS(BGRA, ARGB)

  1461.               || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;

  1462.         else if (CONV_IS(ABGR, ARGB)

  1463.               || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;

  1464.         else if (CONV_IS(ABGR, BGRA)

  1465.               || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;

  1466.         else if (CONV_IS(BGRA, RGBA)

  1467.               || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;

  1468.         else if (CONV_IS(BGRA, ABGR)

  1469.               || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;

  1470.     } else

  1471.     /* BGR -> BGR */

  1472.     if (  (isBGRinInt(srcFormat) && isBGRinInt(dstFormat))

  1473.        || (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {

  1474.         switch(srcId | (dstId<<4)) {

  1475.         case 0x34: conv= rgb16to15; break;

  1476.         case 0x36: conv= rgb24to15; break;

  1477.         case 0x38: conv= rgb32to15; break;

  1478.         case 0x43: conv= rgb15to16; break;

  1479.         case 0x46: conv= rgb24to16; break;

  1480.         case 0x48: conv= rgb32to16; break;

  1481.         case 0x63: conv= rgb15to24; break;

  1482.         case 0x64: conv= rgb16to24; break;

  1483.         case 0x68: conv= rgb32to24; break;

  1484.         case 0x83: conv= rgb15to32; break;

  1485.         case 0x84: conv= rgb16to32; break;

  1486.         case 0x86: conv= rgb24to32; break;

  1487.         }

  1488.     } else if (  (isBGRinInt(srcFormat) && isRGBinInt(dstFormat))

  1489.              || (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {

  1490.         switch(srcId | (dstId<<4)) {

  1491.         case 0x33: conv= rgb15tobgr15; break;

  1492.         case 0x34: conv= rgb16tobgr15; break;

  1493.         case 0x36: conv= rgb24tobgr15; break;

  1494.         case 0x38: conv= rgb32tobgr15; break;

  1495.         case 0x43: conv= rgb15tobgr16; break;

  1496.         case 0x44: conv= rgb16tobgr16; break;

  1497.         case 0x46: conv= rgb24tobgr16; break;

  1498.         case 0x48: conv= rgb32tobgr16; break;

  1499.         case 0x63: conv= rgb15tobgr24; break;

  1500.         case 0x64: conv= rgb16tobgr24; break;

  1501.         case 0x66: conv= rgb24tobgr24; break;

  1502.         case 0x68: conv= rgb32tobgr24; break;

  1503.         case 0x83: conv= rgb15tobgr32; break;

  1504.         case 0x84: conv= rgb16tobgr32; break;

  1505.         case 0x86: conv= rgb24tobgr32; break;

  1506.         }

  1507.     }

  1508. 

  1509.     if (!conv) {

  1510.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1511.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1512.     } else {

  1513.         const uint8_t *srcPtr= src[0];

  1514.               uint8_t *dstPtr= dst[0];

  1515.         if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) && !isRGBA32(dstFormat))

  1516.             srcPtr += ALT32_CORR;

  1517. 

  1518.         if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) && !isRGBA32(srcFormat))

  1519.             dstPtr += ALT32_CORR;

  1520. 

  1521.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  1522.             conv(srcPtr, dstPtr + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1523.         else {

  1524.             int i;

  1525.             dstPtr += dstStride[0]*srcSliceY;

  1526. 

  1527.             for (i=0; i<srcSliceH; i++) {

  1528.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1529.                 srcPtr+= srcStride[0];

  1530.                 dstPtr+= dstStride[0];

  1531.             }

  1532.         }

  1533.     }

  1534.     return srcSliceH;

  1535. }

  1536. 

  1537. static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1538.                               int srcSliceH, uint8_t* dst[], int dstStride[])

  1539. {

  1540.     rgb24toyv12(

  1541.         src[0],

  1542.         dst[0]+ srcSliceY    *dstStride[0],

  1543.         dst[1]+(srcSliceY>>1)*dstStride[1],

  1544.         dst[2]+(srcSliceY>>1)*dstStride[2],

  1545.         c->srcW, srcSliceH,

  1546.         dstStride[0], dstStride[1], srcStride[0]);

  1547.     if (dst[3])

  1548.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1549.     return srcSliceH;

  1550. }

  1551. 

  1552. static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1553.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1554. {

  1555.     int i;

  1556. 

  1557.     /* copy Y */

  1558.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  1559.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  1560.     else {

  1561.         const uint8_t *srcPtr= src[0];

  1562.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1563. 

  1564.         for (i=0; i<srcSliceH; i++) {

  1565.             memcpy(dstPtr, srcPtr, c->srcW);

  1566.             srcPtr+= srcStride[0];

  1567.             dstPtr+= dstStride[0];

  1568.         }

  1569.     }

  1570. 

  1571.     if (c->dstFormat==PIX_FMT_YUV420P || c->dstFormat==PIX_FMT_YUVA420P) {

  1572.         planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  1573.                  srcSliceH >> 2, srcStride[1], dstStride[1]);

  1574.         planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  1575.                  srcSliceH >> 2, srcStride[2], dstStride[2]);

  1576.     } else {

  1577.         planar2x(src[1], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  1578.                  srcSliceH >> 2, srcStride[1], dstStride[2]);

  1579.         planar2x(src[2], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  1580.                  srcSliceH >> 2, srcStride[2], dstStride[1]);

  1581.     }

  1582.     if (dst[3])

  1583.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1584.     return srcSliceH;

  1585. }

  1586. 

  1587. /* unscaled copy like stuff (assumes nearly identical formats) */

  1588. static int packedCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1589.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1590. {

  1591.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1592.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1593.     else {

  1594.         int i;

  1595.         const uint8_t *srcPtr= src[0];

  1596.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1597.         int length=0;

  1598. 

  1599.         /* universal length finder */

  1600.         while(length+c->srcW <= FFABS(dstStride[0])

  1601.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  1602.         assert(length!=0);

  1603. 

  1604.         for (i=0; i<srcSliceH; i++) {

  1605.             memcpy(dstPtr, srcPtr, length);

  1606.             srcPtr+= srcStride[0];

  1607.             dstPtr+= dstStride[0];

  1608.         }

  1609.     }

  1610.     return srcSliceH;

  1611. }

  1612. 

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

  1614.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1615. {

  1616.     int plane, i, j;

  1617.     for (plane=0; plane<4; plane++) {

  1618.         int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1619.         int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1620.         int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1621.         const uint8_t *srcPtr= src[plane];

  1622.         uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  1623. 

  1624.         if (!dst[plane]) continue;

  1625.         // ignore palette for GRAY8

  1626.         if (plane == 1 && !dst[2]) continue;

  1627.         if (!src[plane] || (plane == 1 && !src[2])) {

  1628.             if(is16BPS(c->dstFormat))

  1629.                 length*=2;

  1630.             fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);

  1631.         } else {

  1632.             if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {

  1633.                 if (!isBE(c->srcFormat)) srcPtr++;

  1634.                 for (i=0; i<height; i++) {

  1635.                     for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  1636.                     srcPtr+= srcStride[plane];

  1637.                     dstPtr+= dstStride[plane];

  1638.                 }

  1639.             } else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {

  1640.                 for (i=0; i<height; i++) {

  1641.                     for (j=0; j<length; j++) {

  1642.                         dstPtr[ j<<1   ] = srcPtr[j];

  1643.                         dstPtr[(j<<1)+1] = srcPtr[j];

  1644.                     }

  1645.                     srcPtr+= srcStride[plane];

  1646.                     dstPtr+= dstStride[plane];

  1647.                 }

  1648.             } else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)

  1649.                   && isBE(c->srcFormat) != isBE(c->dstFormat)) {

  1650. 

  1651.                 for (i=0; i<height; i++) {

  1652.                     for (j=0; j<length; j++)

  1653.                         ((uint16_t*)dstPtr)[j] = bswap_16(((const uint16_t*)srcPtr)[j]);

  1654.                     srcPtr+= srcStride[plane];

  1655.                     dstPtr+= dstStride[plane];

  1656.                 }

  1657.             } else if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  1658.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  1659.             else {

  1660.                 if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))

  1661.                     length*=2;

  1662.                 for (i=0; i<height; i++) {

  1663.                     memcpy(dstPtr, srcPtr, length);

  1664.                     srcPtr+= srcStride[plane];

  1665.                     dstPtr+= dstStride[plane];

  1666.                 }

  1667.             }

  1668.         }

  1669.     }

  1670.     return srcSliceH;

  1671. }

  1672. 

  1673. int ff_hardcodedcpuflags(void)

  1674. {

  1675.     int flags = 0;

  1676. #if   COMPILE_TEMPLATE_MMX2

  1677.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  1678. #elif COMPILE_TEMPLATE_AMD3DNOW

  1679.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  1680. #elif COMPILE_TEMPLATE_MMX

  1681.     flags |= SWS_CPU_CAPS_MMX;

  1682. #elif COMPILE_TEMPLATE_ALTIVEC

  1683.     flags |= SWS_CPU_CAPS_ALTIVEC;

  1684. #elif ARCH_BFIN

  1685.     flags |= SWS_CPU_CAPS_BFIN;

  1686. #endif

  1687.     return flags;

  1688. }

  1689. 

  1690. void ff_get_unscaled_swscale(SwsContext *c)

  1691. {

  1692.     const enum PixelFormat srcFormat = c->srcFormat;

  1693.     const enum PixelFormat dstFormat = c->dstFormat;

  1694.     const int flags = c->flags;

  1695.     const int dstH = c->dstH;

  1696.     int needsDither;

  1697. 

  1698.     needsDither= isAnyRGB(dstFormat)

  1699.         &&  c->dstFormatBpp < 24

  1700.         && (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));

  1701. 

  1702.     /* yv12_to_nv12 */

  1703.     if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {

  1704.         c->swScale= planarToNv12Wrapper;

  1705.     }

  1706.     /* yuv2bgr */

  1707.     if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && isAnyRGB(dstFormat)

  1708.         && !(flags & SWS_ACCURATE_RND) && !(dstH&1)) {

  1709.         c->swScale= ff_yuv2rgb_get_func_ptr(c);

  1710.     }

  1711. 

  1712.     if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT)) {

  1713.         c->swScale= yvu9ToYv12Wrapper;

  1714.     }

  1715. 

  1716.     /* bgr24toYV12 */

  1717.     if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))

  1718.         c->swScale= bgr24ToYv12Wrapper;

  1719. 

  1720.     /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  1721.     if (   isAnyRGB(srcFormat)

  1722.         && isAnyRGB(dstFormat)

  1723.         && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  1724.         && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  1725.         && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  1726.         && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  1727.         && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  1728.         && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  1729.         && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  1730.         && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  1731.         && srcFormat != PIX_FMT_RGB48LE   && dstFormat != PIX_FMT_RGB48LE

  1732.         && srcFormat != PIX_FMT_RGB48BE   && dstFormat != PIX_FMT_RGB48BE

  1733.         && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  1734.         c->swScale= rgbToRgbWrapper;

  1735. 

  1736.     if ((usePal(srcFormat) && (

  1737.         dstFormat == PIX_FMT_RGB32   ||

  1738.         dstFormat == PIX_FMT_RGB32_1 ||

  1739.         dstFormat == PIX_FMT_RGB24   ||

  1740.         dstFormat == PIX_FMT_BGR32   ||

  1741.         dstFormat == PIX_FMT_BGR32_1 ||

  1742.         dstFormat == PIX_FMT_BGR24)))

  1743.         c->swScale= palToRgbWrapper;

  1744. 

  1745.     if (srcFormat == PIX_FMT_YUV422P) {

  1746.         if (dstFormat == PIX_FMT_YUYV422)

  1747.             c->swScale= yuv422pToYuy2Wrapper;

  1748.         else if (dstFormat == PIX_FMT_UYVY422)

  1749.             c->swScale= yuv422pToUyvyWrapper;

  1750.     }

  1751. 

  1752.     /* LQ converters if -sws 0 or -sws 4*/

  1753.     if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {

  1754.         /* yv12_to_yuy2 */

  1755.         if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {

  1756.             if (dstFormat == PIX_FMT_YUYV422)

  1757.                 c->swScale= planarToYuy2Wrapper;

  1758.             else if (dstFormat == PIX_FMT_UYVY422)

  1759.                 c->swScale= planarToUyvyWrapper;

  1760.         }

  1761.     }

  1762.     if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  1763.         c->swScale= yuyvToYuv420Wrapper;

  1764.     if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  1765.         c->swScale= uyvyToYuv420Wrapper;

  1766.     if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)

  1767.         c->swScale= yuyvToYuv422Wrapper;

  1768.     if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)

  1769.         c->swScale= uyvyToYuv422Wrapper;

  1770. 

  1771. #ifdef COMPILE_ALTIVEC

  1772.     if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  1773.         !(c->flags & SWS_BITEXACT) &&

  1774.         srcFormat == PIX_FMT_YUV420P) {

  1775.         // unscaled YV12 -> packed YUV, we want speed

  1776.         if (dstFormat == PIX_FMT_YUYV422)

  1777.             c->swScale= yv12toyuy2_unscaled_altivec;

  1778.         else if (dstFormat == PIX_FMT_UYVY422)

  1779.             c->swScale= yv12touyvy_unscaled_altivec;

  1780.     }

  1781. #endif

  1782. 

  1783.     /* simple copy */

  1784.     if (  srcFormat == dstFormat

  1785.         || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)

  1786.         || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)

  1787.         || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  1788.         || (isPlanarYUV(dstFormat) && isGray(srcFormat))

  1789.         || (isGray(dstFormat) && isGray(srcFormat))

  1790.         || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)

  1791.             && c->chrDstHSubSample == c->chrSrcHSubSample

  1792.             && c->chrDstVSubSample == c->chrSrcVSubSample

  1793.             && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21

  1794.             && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))

  1795.     {

  1796.         if (isPacked(c->srcFormat))

  1797.             c->swScale= packedCopyWrapper;

  1798.         else /* Planar YUV or gray */

  1799.             c->swScale= planarCopyWrapper;

  1800.     }

  1801. #if ARCH_BFIN

  1802.     if (flags & SWS_CPU_CAPS_BFIN)

  1803.         ff_bfin_get_unscaled_swscale (c);

  1804. #endif

  1805. }

  1806. 

  1807. static void reset_ptr(const uint8_t* src[], int format)

  1808. {

  1809.     if(!isALPHA(format))

  1810.         src[3]=NULL;

  1811.     if(!isPlanarYUV(format)) {

  1812.         src[3]=src[2]=NULL;

  1813. 

  1814.         if (!usePal(format))

  1815.             src[1]= NULL;

  1816.     }

  1817. }

  1818. 

  1819. /**

  1820.  * swscale wrapper, so we don't need to export the SwsContext.

  1821.  * Assumes planar YUV to be in YUV order instead of YVU.

  1822.  */

  1823. int sws_scale(SwsContext *c, const uint8_t* const src[], const int srcStride[], int srcSliceY,

  1824.               int srcSliceH, uint8_t* const dst[], const int dstStride[])

  1825. {

  1826.     int i;

  1827.     const uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};

  1828.     uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};

  1829. 

  1830.     // do not mess up sliceDir if we have a "trailing" 0-size slice

  1831.     if (srcSliceH == 0)

  1832.         return 0;

  1833. 

  1834.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  1835.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  1836.         return 0;

  1837.     }

  1838.     if (c->sliceDir == 0) {

  1839.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  1840.     }

  1841. 

  1842.     if (usePal(c->srcFormat)) {

  1843.         for (i=0; i<256; i++) {

  1844.             int p, r, g, b,y,u,v;

  1845.             if(c->srcFormat == PIX_FMT_PAL8) {

  1846.                 p=((const uint32_t*)(src[1]))[i];

  1847.                 r= (p>>16)&0xFF;

  1848.                 g= (p>> 8)&0xFF;

  1849.                 b=  p     &0xFF;

  1850.             } else if(c->srcFormat == PIX_FMT_RGB8) {

  1851.                 r= (i>>5    )*36;

  1852.                 g= ((i>>2)&7)*36;

  1853.                 b= (i&3     )*85;

  1854.             } else if(c->srcFormat == PIX_FMT_BGR8) {

  1855.                 b= (i>>6    )*85;

  1856.                 g= ((i>>3)&7)*36;

  1857.                 r= (i&7     )*36;

  1858.             } else if(c->srcFormat == PIX_FMT_RGB4_BYTE) {

  1859.                 r= (i>>3    )*255;

  1860.                 g= ((i>>1)&3)*85;

  1861.                 b= (i&1     )*255;

  1862.             } else if(c->srcFormat == PIX_FMT_GRAY8) {

  1863.                 r = g = b = i;

  1864.             } else {

  1865.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  1866.                 b= (i>>3    )*255;

  1867.                 g= ((i>>1)&3)*85;

  1868.                 r= (i&1     )*255;

  1869.             }

  1870.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  1871.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  1872.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  1873.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  1874. 

  1875.             switch(c->dstFormat) {

  1876.             case PIX_FMT_BGR32:

  1877. #if !HAVE_BIGENDIAN

  1878.             case PIX_FMT_RGB24:

  1879. #endif

  1880.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  1881.                 break;

  1882.             case PIX_FMT_BGR32_1:

  1883. #if HAVE_BIGENDIAN

  1884.             case PIX_FMT_BGR24:

  1885. #endif

  1886.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  1887.                 break;

  1888.             case PIX_FMT_RGB32_1:

  1889. #if HAVE_BIGENDIAN

  1890.             case PIX_FMT_RGB24:

  1891. #endif

  1892.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  1893.                 break;

  1894.             case PIX_FMT_RGB32:

  1895. #if !HAVE_BIGENDIAN

  1896.             case PIX_FMT_BGR24:

  1897. #endif

  1898.             default:

  1899.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  1900.             }

  1901.         }

  1902.     }

  1903. 

  1904.     // copy strides, so they can safely be modified

  1905.     if (c->sliceDir == 1) {

  1906.         // slices go from top to bottom

  1907.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};

  1908.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};

  1909. 

  1910.         reset_ptr(src2, c->srcFormat);

  1911.         reset_ptr((const uint8_t**)dst2, c->dstFormat);

  1912. 

  1913.         /* reset slice direction at end of frame */

  1914.         if (srcSliceY + srcSliceH == c->srcH)

  1915.             c->sliceDir = 0;

  1916. 

  1917.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);

  1918.     } else {

  1919.         // slices go from bottom to top => we flip the image internally

  1920.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};

  1921.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};

  1922. 

  1923.         src2[0] += (srcSliceH-1)*srcStride[0];

  1924.         if (!usePal(c->srcFormat))

  1925.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  1926.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  1927.         src2[3] += (srcSliceH-1)*srcStride[3];

  1928.         dst2[0] += ( c->dstH                      -1)*dstStride[0];

  1929.         dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];

  1930.         dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];

  1931.         dst2[3] += ( c->dstH                      -1)*dstStride[3];

  1932. 

  1933.         reset_ptr(src2, c->srcFormat);

  1934.         reset_ptr((const uint8_t**)dst2, c->dstFormat);

  1935. 

  1936.         /* reset slice direction at end of frame */

  1937.         if (!srcSliceY)

  1938.             c->sliceDir = 0;

  1939. 

  1940.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  1941.     }

  1942. }

  1943. 

  1944. #if LIBSWSCALE_VERSION_MAJOR < 1

  1945. int sws_scale_ordered(SwsContext *c, const uint8_t* const src[], int srcStride[], int srcSliceY,

  1946.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  1947. {

  1948.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  1949. }

  1950. #endif