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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

  7.  * modify it under the terms of the GNU Lesser General Public

  8.  * License as published by the Free Software Foundation; either

  9.  * version 2.1 of the License, or (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 GNU

  14.  * Lesser General Public License for more details.

  15.  *

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

  17.  * License 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. 

  21. /*

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

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

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

  25. 

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

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

  28.   x -> x

  29.   YUV9 -> YV12

  30.   YUV9/YV12 -> Y800

  31.   Y800 -> YUV9/YV12

  32.   BGR24 -> BGR32 & RGB24 -> RGB32

  33.   BGR32 -> BGR24 & RGB32 -> RGB24

  34.   BGR15 -> BGR16

  35. */

  36. 

  37. /*

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

  39.  YV12 -> BGR12/BGR16

  40.  YV12 -> YV12

  41.  BGR15 -> BGR16

  42.  BGR16 -> BGR16

  43.  YVU9 -> YV12

  44. 

  45. untested special converters

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

  47.   YV12/I420 -> YV12/I420

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

  49.   BGR24 -> BGR32 & RGB24 -> RGB32

  50.   BGR32 -> BGR24 & RGB32 -> RGB24

  51.   BGR24 -> YV12

  52. */

  53. 

  54. #include <inttypes.h>

  55. #include <string.h>

  56. #include <math.h>

  57. #include <stdio.h>

  58. #include "config.h"

  59. #include <assert.h>

  60. #include "swscale.h"

  61. #include "swscale_internal.h"

  62. #include "rgb2rgb.h"

  63. #include "libavutil/intreadwrite.h"

  64. #include "libavutil/x86_cpu.h"

  65. #include "libavutil/avutil.h"

  66. #include "libavutil/mathematics.h"

  67. #include "libavutil/bswap.h"

  68. #include "libavutil/pixdesc.h"

  69. 

  70. #undef MOVNTQ

  71. #undef PAVGB

  72. 

  73. //#undef HAVE_MMX2

  74. //#define HAVE_AMD3DNOW

  75. //#undef HAVE_MMX

  76. //#undef ARCH_X86

  77. #define DITHER1XBPP

  78. 

  79. #define isPacked(x)         (       \

  80.            (x)==PIX_FMT_PAL8        \

  81.         || (x)==PIX_FMT_YUYV422     \

  82.         || (x)==PIX_FMT_UYVY422     \

  83.         || (x)==PIX_FMT_GRAY8A       \

  84.         || isAnyRGB(x)              \

  85.     )

  86. 

  87. #define RGB2YUV_SHIFT 15

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

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

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

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

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

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

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

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

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

  97. 

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

  99.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5}, //ITU709

  100.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5}, //ITU709

  101.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M

  102.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M

  103.     {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC

  104.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M

  105.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M

  106.     {0.701 , 0.087 , 0.212 , -0.384, 0.5, -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M

  107. };

  108. 

  109. /*

  110. NOTES

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

  112. 

  113. TODO

  114. more intelligent misalignment avoidance for the horizontal scaler

  115. write special vertical cubic upscale version

  116. optimize C code (YV12 / minmax)

  117. add support for packed pixel YUV input & output

  118. add support for Y8 output

  119. optimize BGR24 & BGR32

  120. add BGR4 output support

  121. write special BGR->BGR scaler

  122. */

  123. 

  124. #if ARCH_X86

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

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

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

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

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

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

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

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

  133. 

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

  135.         0x0103010301030103LL,

  136.         0x0200020002000200LL,};

  137. 

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

  139.         0x0602060206020602LL,

  140.         0x0004000400040004LL,};

  141. 

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

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

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

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

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

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

  148. 

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

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

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

  152. 

  153. #ifdef FAST_BGR2YV12

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

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

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

  157. #else

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

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

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

  161. #endif /* FAST_BGR2YV12 */

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

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

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

  165. 

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

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

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

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

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

  171. 

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

  173.     {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},

  174.     {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},

  175. };

  176. 

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

  178. 

  179. #endif /* ARCH_X86 */

  180. 

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

  182. {  1,   3,   1,   3,   1,   3,   1,   3, },

  183. {  2,   0,   2,   0,   2,   0,   2,   0, },

  184. };

  185. 

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

  187. {  6,   2,   6,   2,   6,   2,   6,   2, },

  188. {  0,   4,   0,   4,   0,   4,   0,   4, },

  189. };

  190. 

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

  192. {  8,   4,  11,   7,   8,   4,  11,   7, },

  193. {  2,  14,   1,  13,   2,  14,   1,  13, },

  194. { 10,   6,   9,   5,  10,   6,   9,   5, },

  195. {  0,  12,   3,  15,   0,  12,   3,  15, },

  196. };

  197. 

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

  199. { 17,   9,  23,  15,  16,   8,  22,  14, },

  200. {  5,  29,   3,  27,   4,  28,   2,  26, },

  201. { 21,  13,  19,  11,  20,  12,  18,  10, },

  202. {  0,  24,   6,  30,   1,  25,   7,  31, },

  203. { 16,   8,  22,  14,  17,   9,  23,  15, },

  204. {  4,  28,   2,  26,   5,  29,   3,  27, },

  205. { 20,  12,  18,  10,  21,  13,  19,  11, },

  206. {  1,  25,   7,  31,   0,  24,   6,  30, },

  207. };

  208. 

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

  210. {  0,  55,  14,  68,   3,  58,  17,  72, },

  211. { 37,  18,  50,  32,  40,  22,  54,  35, },

  212. {  9,  64,   5,  59,  13,  67,   8,  63, },

  213. { 46,  27,  41,  23,  49,  31,  44,  26, },

  214. {  2,  57,  16,  71,   1,  56,  15,  70, },

  215. { 39,  21,  52,  34,  38,  19,  51,  33, },

  216. { 11,  66,   7,  62,  10,  65,   6,  60, },

  217. { 48,  30,  43,  25,  47,  29,  42,  24, },

  218. };

  219. 

  220. #if 1

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

  222. {117,  62, 158, 103, 113,  58, 155, 100, },

  223. { 34, 199,  21, 186,  31, 196,  17, 182, },

  224. {144,  89, 131,  76, 141,  86, 127,  72, },

  225. {  0, 165,  41, 206,  10, 175,  52, 217, },

  226. {110,  55, 151,  96, 120,  65, 162, 107, },

  227. { 28, 193,  14, 179,  38, 203,  24, 189, },

  228. {138,  83, 124,  69, 148,  93, 134,  79, },

  229. {  7, 172,  48, 213,   3, 168,  45, 210, },

  230. };

  231. #elif 1

  232. // tries to correct a gamma of 1.5

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

  234. {  0, 143,  18, 200,   2, 156,  25, 215, },

  235. { 78,  28, 125,  64,  89,  36, 138,  74, },

  236. { 10, 180,   3, 161,  16, 195,   8, 175, },

  237. {109,  51,  93,  38, 121,  60, 105,  47, },

  238. {  1, 152,  23, 210,   0, 147,  20, 205, },

  239. { 85,  33, 134,  71,  81,  30, 130,  67, },

  240. { 14, 190,   6, 171,  12, 185,   5, 166, },

  241. {117,  57, 101,  44, 113,  54,  97,  41, },

  242. };

  243. #elif 1

  244. // tries to correct a gamma of 2.0

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

  246. {  0, 124,   8, 193,   0, 140,  12, 213, },

  247. { 55,  14, 104,  42,  66,  19, 119,  52, },

  248. {  3, 168,   1, 145,   6, 187,   3, 162, },

  249. { 86,  31,  70,  21,  99,  39,  82,  28, },

  250. {  0, 134,  11, 206,   0, 129,   9, 200, },

  251. { 62,  17, 114,  48,  58,  16, 109,  45, },

  252. {  5, 181,   2, 157,   4, 175,   1, 151, },

  253. { 95,  36,  78,  26,  90,  34,  74,  24, },

  254. };

  255. #else

  256. // tries to correct a gamma of 2.5

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

  258. {  0, 107,   3, 187,   0, 125,   6, 212, },

  259. { 39,   7,  86,  28,  49,  11, 102,  36, },

  260. {  1, 158,   0, 131,   3, 180,   1, 151, },

  261. { 68,  19,  52,  12,  81,  25,  64,  17, },

  262. {  0, 119,   5, 203,   0, 113,   4, 195, },

  263. { 45,   9,  96,  33,  42,   8,  91,  30, },

  264. {  2, 172,   1, 144,   2, 165,   0, 137, },

  265. { 77,  23,  60,  15,  72,  21,  56,  14, },

  266. };

  267. #endif

  268. 

  269. DECLARE_ALIGNED(8, const uint8_t, dithers)[8][8][8]={

  270. {

  271.   {   0,  1,  0,  1,  0,  1,  0,  1,},

  272.   {   1,  0,  1,  0,  1,  0,  1,  0,},

  273.   {   0,  1,  0,  1,  0,  1,  0,  1,},

  274.   {   1,  0,  1,  0,  1,  0,  1,  0,},

  275.   {   0,  1,  0,  1,  0,  1,  0,  1,},

  276.   {   1,  0,  1,  0,  1,  0,  1,  0,},

  277.   {   0,  1,  0,  1,  0,  1,  0,  1,},

  278.   {   1,  0,  1,  0,  1,  0,  1,  0,},

  279. },{

  280.   {   1,  2,  1,  2,  1,  2,  1,  2,},

  281.   {   3,  0,  3,  0,  3,  0,  3,  0,},

  282.   {   1,  2,  1,  2,  1,  2,  1,  2,},

  283.   {   3,  0,  3,  0,  3,  0,  3,  0,},

  284.   {   1,  2,  1,  2,  1,  2,  1,  2,},

  285.   {   3,  0,  3,  0,  3,  0,  3,  0,},

  286.   {   1,  2,  1,  2,  1,  2,  1,  2,},

  287.   {   3,  0,  3,  0,  3,  0,  3,  0,},

  288. },{

  289.   {   2,  4,  3,  5,  2,  4,  3,  5,},

  290.   {   6,  0,  7,  1,  6,  0,  7,  1,},

  291.   {   3,  5,  2,  4,  3,  5,  2,  4,},

  292.   {   7,  1,  6,  0,  7,  1,  6,  0,},

  293.   {   2,  4,  3,  5,  2,  4,  3,  5,},

  294.   {   6,  0,  7,  1,  6,  0,  7,  1,},

  295.   {   3,  5,  2,  4,  3,  5,  2,  4,},

  296.   {   7,  1,  6,  0,  7,  1,  6,  0,},

  297. },{

  298.   {   4,  8,  7, 11,  4,  8,  7, 11,},

  299.   {  12,  0, 15,  3, 12,  0, 15,  3,},

  300.   {   6, 10,  5,  9,  6, 10,  5,  9,},

  301.   {  14,  2, 13,  1, 14,  2, 13,  1,},

  302.   {   4,  8,  7, 11,  4,  8,  7, 11,},

  303.   {  12,  0, 15,  3, 12,  0, 15,  3,},

  304.   {   6, 10,  5,  9,  6, 10,  5,  9,},

  305.   {  14,  2, 13,  1, 14,  2, 13,  1,},

  306. },{

  307.   {   9, 17, 15, 23,  8, 16, 14, 22,},

  308.   {  25,  1, 31,  7, 24,  0, 30,  6,},

  309.   {  13, 21, 11, 19, 12, 20, 10, 18,},

  310.   {  29,  5, 27,  3, 28,  4, 26,  2,},

  311.   {   8, 16, 14, 22,  9, 17, 15, 23,},

  312.   {  24,  0, 30,  6, 25,  1, 31,  7,},

  313.   {  12, 20, 10, 18, 13, 21, 11, 19,},

  314.   {  28,  4, 26,  2, 29,  5, 27,  3,},

  315. },{

  316.   {  18, 34, 30, 46, 17, 33, 29, 45,},

  317.   {  50,  2, 62, 14, 49,  1, 61, 13,},

  318.   {  26, 42, 22, 38, 25, 41, 21, 37,},

  319.   {  58, 10, 54,  6, 57,  9, 53,  5,},

  320.   {  16, 32, 28, 44, 19, 35, 31, 47,},

  321.   {  48,  0, 60, 12, 51,  3, 63, 15,},

  322.   {  24, 40, 20, 36, 27, 43, 23, 39,},

  323.   {  56,  8, 52,  4, 59, 11, 55,  7,},

  324. },{

  325.   {  18, 34, 30, 46, 17, 33, 29, 45,},

  326.   {  50,  2, 62, 14, 49,  1, 61, 13,},

  327.   {  26, 42, 22, 38, 25, 41, 21, 37,},

  328.   {  58, 10, 54,  6, 57,  9, 53,  5,},

  329.   {  16, 32, 28, 44, 19, 35, 31, 47,},

  330.   {  48,  0, 60, 12, 51,  3, 63, 15,},

  331.   {  24, 40, 20, 36, 27, 43, 23, 39,},

  332.   {  56,  8, 52,  4, 59, 11, 55,  7,},

  333. },{

  334.   {  36, 68, 60, 92, 34, 66, 58, 90,},

  335.   { 100,  4,124, 28, 98,  2,122, 26,},

  336.   {  52, 84, 44, 76, 50, 82, 42, 74,},

  337.   { 116, 20,108, 12,114, 18,106, 10,},

  338.   {  32, 64, 56, 88, 38, 70, 62, 94,},

  339.   {  96,  0,120, 24,102,  6,126, 30,},

  340.   {  48, 80, 40, 72, 54, 86, 46, 78,},

  341.   { 112, 16,104,  8,118, 22,110, 14,},

  342. }};

  343. 

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

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

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

  347.                                                     int dstW, int chrDstW, int big_endian)

  348. {

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

  350.     int i;

  351. 

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

  353.         int val = 1 << 10;

  354.         int j;

  355. 

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

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

  358. 

  359.         if (big_endian) {

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

  361.         } else {

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

  363.         }

  364.     }

  365. 

  366.     if (uDest) {

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

  368.             int u = 1 << 10;

  369.             int v = 1 << 10;

  370.             int j;

  371. 

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

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

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

  375.             }

  376. 

  377.             if (big_endian) {

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

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

  380.             } else {

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

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

  383.             }

  384.         }

  385.     }

  386. 

  387.     if (CONFIG_SWSCALE_ALPHA && aDest) {

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

  389.             int val = 1 << 10;

  390.             int j;

  391. 

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

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

  394. 

  395.             if (big_endian) {

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

  397.             } else {

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

  399.             }

  400.         }

  401.     }

  402. }

  403. 

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

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

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

  407.                                  enum PixelFormat dstFormat)

  408. {

  409.     if (isBE(dstFormat)) {

  410.         yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,

  411.                                chrFilter, chrSrc, chrFilterSize,

  412.                                alpSrc,

  413.                                dest, uDest, vDest, aDest,

  414.                                dstW, chrDstW, 1);

  415.     } else {

  416.         yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,

  417.                                chrFilter, chrSrc, chrFilterSize,

  418.                                alpSrc,

  419.                                dest, uDest, vDest, aDest,

  420.                                dstW, chrDstW, 0);

  421.     }

  422. }

  423. 

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

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

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

  427. {

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

  429.     int i;

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

  431.         int val=1<<18;

  432.         int j;

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

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

  435. 

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

  437.     }

  438. 

  439.     if (uDest)

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

  441.             int u=1<<18;

  442.             int v=1<<18;

  443.             int j;

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

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

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

  447.             }

  448. 

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

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

  451.         }

  452. 

  453.     if (CONFIG_SWSCALE_ALPHA && aDest)

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

  455.             int val=1<<18;

  456.             int j;

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

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

  459. 

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

  461.         }

  462. 

  463. }

  464. 

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

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

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

  468. {

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

  470.     int i;

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

  472.         int val=1<<18;

  473.         int j;

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

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

  476. 

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

  478.     }

  479. 

  480.     if (!uDest)

  481.         return;

  482. 

  483.     if (dstFormat == PIX_FMT_NV12)

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

  485.             int u=1<<18;

  486.             int v=1<<18;

  487.             int j;

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

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

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

  491.             }

  492. 

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

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

  495.         }

  496.     else

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

  498.             int u=1<<18;

  499.             int v=1<<18;

  500.             int j;

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

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

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

  504.             }

  505. 

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

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

  508.         }

  509. }

  510. 

  511. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \

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

  513.         int j;\

  514.         int Y1 = 1<<18;\

  515.         int Y2 = 1<<18;\

  516.         int U  = 1<<18;\

  517.         int V  = 1<<18;\

  518.         int av_unused A1, A2;\

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

  520.         const int i2= 2*i;\

  521.         \

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

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

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

  525.         }\

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

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

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

  529.         }\

  530.         Y1>>=19;\

  531.         Y2>>=19;\

  532.         U >>=19;\

  533.         V >>=19;\

  534.         if (alpha) {\

  535.             A1 = 1<<18;\

  536.             A2 = 1<<18;\

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

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

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

  540.             }\

  541.             A1>>=19;\

  542.             A2>>=19;\

  543.         }

  544. 

  545. #define YSCALE_YUV_2_PACKEDX_C(type,alpha) \

  546.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\

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

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

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

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

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

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

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

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

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

  556.         }\

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

  558.             A1=av_clip_uint8(A1);\

  559.             A2=av_clip_uint8(A2);\

  560.         }

  561. 

  562. #define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \

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

  564.         int j;\

  565.         int Y = 0;\

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

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

  568.         int av_unused A;\

  569.         int R,G,B;\

  570.         \

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

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

  573.         }\

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

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

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

  577.         }\

  578.         Y >>=10;\

  579.         U >>=10;\

  580.         V >>=10;\

  581.         if (alpha) {\

  582.             A = rnd;\

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

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

  585.             A >>=19;\

  586.             if (A&256)\

  587.                 A = av_clip_uint8(A);\

  588.         }

  589. 

  590. #define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \

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

  592.         Y-= c->yuv2rgb_y_offset;\

  593.         Y*= c->yuv2rgb_y_coeff;\

  594.         Y+= rnd;\

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

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

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

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

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

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

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

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

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

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

  605.         }

  606. 

  607. #define YSCALE_YUV_2_GRAY16_C \

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

  609.         int j;\

  610.         int Y1 = 1<<18;\

  611.         int Y2 = 1<<18;\

  612.         int U  = 1<<18;\

  613.         int V  = 1<<18;\

  614.         \

  615.         const int i2= 2*i;\

  616.         \

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

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

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

  620.         }\

  621.         Y1>>=11;\

  622.         Y2>>=11;\

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

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

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

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

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

  628.         }

  629. 

  630. #define YSCALE_YUV_2_RGBX_C(type,alpha) \

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

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

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

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

  635. 

  636. #define YSCALE_YUV_2_PACKED2_C(type,alpha)   \

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

  638.         const int i2= 2*i;       \

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

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

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

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

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

  644.         int av_unused A1, A2;                                         \

  645.         if (alpha) {\

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

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

  648.         }

  649. 

  650. #define YSCALE_YUV_2_GRAY16_2_C   \

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

  652.         const int i2= 2*i;       \

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

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

  655. 

  656. #define YSCALE_YUV_2_RGB2_C(type,alpha) \

  657.     YSCALE_YUV_2_PACKED2_C(type,alpha)\

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

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

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

  661. 

  662. #define YSCALE_YUV_2_PACKED1_C(type,alpha) \

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

  664.         const int i2= 2*i;\

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

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

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

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

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

  670.         int av_unused A1, A2;\

  671.         if (alpha) {\

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

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

  674.         }

  675. 

  676. #define YSCALE_YUV_2_GRAY16_1_C \

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

  678.         const int i2= 2*i;\

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

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

  681. 

  682. #define YSCALE_YUV_2_RGB1_C(type,alpha) \

  683.     YSCALE_YUV_2_PACKED1_C(type,alpha)\

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

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

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

  687. 

  688. #define YSCALE_YUV_2_PACKED1B_C(type,alpha) \

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

  690.         const int i2= 2*i;\

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

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

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

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

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

  696.         int av_unused A1, A2;\

  697.         if (alpha) {\

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

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

  700.         }

  701. 

  702. #define YSCALE_YUV_2_RGB1B_C(type,alpha) \

  703.     YSCALE_YUV_2_PACKED1B_C(type,alpha)\

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

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

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

  707. 

  708. #define YSCALE_YUV_2_MONO2_C \

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

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

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

  712.         int acc;\

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

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

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

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

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

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

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

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

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

  722.         dest++;\

  723.     }

  724. 

  725. #define YSCALE_YUV_2_MONOX_C \

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

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

  728.     int acc=0;\

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

  730.         int j;\

  731.         int Y1=1<<18;\

  732.         int Y2=1<<18;\

  733. \

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

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

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

  737.         }\

  738.         Y1>>=19;\

  739.         Y2>>=19;\

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

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

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

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

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

  745.         }\

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

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

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

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

  750.             dest++;\

  751.         }\

  752.     }

  753. 

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

  755.     switch(c->dstFormat) {\

  756.     case PIX_FMT_RGB48BE:\

  757.     case PIX_FMT_RGB48LE:\

  758.         func(uint8_t,0)\

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

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

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

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

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

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

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

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

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

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

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

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

  771.             dest+=12;\

  772.         }\

  773.         break;\

  774.     case PIX_FMT_BGR48BE:\

  775.     case PIX_FMT_BGR48LE:\

  776.         func(uint8_t,0)\

  777.             ((uint8_t*)dest)[ 0] = ((uint8_t*)dest)[ 1] = b[Y1];\

  778.             ((uint8_t*)dest)[ 2] = ((uint8_t*)dest)[ 3] = g[Y1];\

  779.             ((uint8_t*)dest)[ 4] = ((uint8_t*)dest)[ 5] = r[Y1];\

  780.             ((uint8_t*)dest)[ 6] = ((uint8_t*)dest)[ 7] = b[Y2];\

  781.             ((uint8_t*)dest)[ 8] = ((uint8_t*)dest)[ 9] = g[Y2];\

  782.             ((uint8_t*)dest)[10] = ((uint8_t*)dest)[11] = r[Y2];\

  783.             dest+=12;\

  784.         }\

  785.         break;\

  786.     case PIX_FMT_RGBA:\

  787.     case PIX_FMT_BGRA:\

  788.         if (CONFIG_SMALL) {\

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

  790.             func(uint32_t,needAlpha)\

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

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

  793.             }\

  794.         } else {\

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

  796.                 func(uint32_t,1)\

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

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

  799.                 }\

  800.             } else {\

  801.                 func(uint32_t,0)\

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

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

  804.                 }\

  805.             }\

  806.         }\

  807.         break;\

  808.     case PIX_FMT_ARGB:\

  809.     case PIX_FMT_ABGR:\

  810.         if (CONFIG_SMALL) {\

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

  812.             func(uint32_t,needAlpha)\

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

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

  815.             }\

  816.         } else {\

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

  818.                 func(uint32_t,1)\

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

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

  821.                 }\

  822.             } else {\

  823.                 func(uint32_t,0)\

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

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

  826.                 }\

  827.             }\

  828.         }                \

  829.         break;\

  830.     case PIX_FMT_RGB24:\

  831.         func(uint8_t,0)\

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

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

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

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

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

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

  838.             dest+=6;\

  839.         }\

  840.         break;\

  841.     case PIX_FMT_BGR24:\

  842.         func(uint8_t,0)\

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

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

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

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

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

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

  849.             dest+=6;\

  850.         }\

  851.         break;\

  852.     case PIX_FMT_RGB565BE:\

  853.     case PIX_FMT_RGB565LE:\

  854.     case PIX_FMT_BGR565BE:\

  855.     case PIX_FMT_BGR565LE:\

  856.         {\

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

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

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

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

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

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

  863.             func(uint16_t,0)\

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

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

  866.             }\

  867.         }\

  868.         break;\

  869.     case PIX_FMT_RGB555BE:\

  870.     case PIX_FMT_RGB555LE:\

  871.     case PIX_FMT_BGR555BE:\

  872.     case PIX_FMT_BGR555LE:\

  873.         {\

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

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

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

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

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

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

  880.             func(uint16_t,0)\

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

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

  883.             }\

  884.         }\

  885.         break;\

  886.     case PIX_FMT_RGB444BE:\

  887.     case PIX_FMT_RGB444LE:\

  888.     case PIX_FMT_BGR444BE:\

  889.     case PIX_FMT_BGR444LE:\

  890.         {\

  891.             const int dr1= dither_4x4_16[y&3    ][0];\

  892.             const int dg1= dither_4x4_16[y&3    ][1];\

  893.             const int db1= dither_4x4_16[(y&3)^3][0];\

  894.             const int dr2= dither_4x4_16[y&3    ][1];\

  895.             const int dg2= dither_4x4_16[y&3    ][0];\

  896.             const int db2= dither_4x4_16[(y&3)^3][1];\

  897.             func(uint16_t,0)\

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

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

  900.             }\

  901.         }\

  902.         break;\

  903.     case PIX_FMT_RGB8:\

  904.     case PIX_FMT_BGR8:\

  905.         {\

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

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

  908.             func(uint8_t,0)\

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

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

  911.             }\

  912.         }\

  913.         break;\

  914.     case PIX_FMT_RGB4:\

  915.     case PIX_FMT_BGR4:\

  916.         {\

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

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

  919.             func(uint8_t,0)\

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

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

  922.             }\

  923.         }\

  924.         break;\

  925.     case PIX_FMT_RGB4_BYTE:\

  926.     case PIX_FMT_BGR4_BYTE:\

  927.         {\

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

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

  930.             func(uint8_t,0)\

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

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

  933.             }\

  934.         }\

  935.         break;\

  936.     case PIX_FMT_MONOBLACK:\

  937.     case PIX_FMT_MONOWHITE:\

  938.         {\

  939.             func_monoblack\

  940.         }\

  941.         break;\

  942.     case PIX_FMT_YUYV422:\

  943.         func2\

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

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

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

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

  948.         }                \

  949.         break;\

  950.     case PIX_FMT_UYVY422:\

  951.         func2\

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

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

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

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

  956.         }                \

  957.         break;\

  958.     case PIX_FMT_GRAY16BE:\

  959.         func_g16\

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

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

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

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

  964.         }                \

  965.         break;\

  966.     case PIX_FMT_GRAY16LE:\

  967.         func_g16\

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

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

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

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

  972.         }                \

  973.         break;\

  974.     }

  975. 

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

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

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

  979. {

  980.     int i;

  981.     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)

  982. }

  983. 

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

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

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

  987. {

  988.     int i;

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

  990.     int aidx= 3;

  991. 

  992.     switch(c->dstFormat) {

  993.     case PIX_FMT_ARGB:

  994.         dest++;

  995.         aidx= 0;

  996.     case PIX_FMT_RGB24:

  997.         aidx--;

  998.     case PIX_FMT_RGBA:

  999.         if (CONFIG_SMALL) {

  1000.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1001.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1002.                 dest[aidx]= needAlpha ? A : 255;

  1003.                 dest[0]= R>>22;

  1004.                 dest[1]= G>>22;

  1005.                 dest[2]= B>>22;

  1006.                 dest+= step;

  1007.             }

  1008.         } else {

  1009.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  1010.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1011.                     dest[aidx]= A;

  1012.                     dest[0]= R>>22;

  1013.                     dest[1]= G>>22;

  1014.                     dest[2]= B>>22;

  1015.                     dest+= step;

  1016.                 }

  1017.             } else {

  1018.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1019.                     dest[aidx]= 255;

  1020.                     dest[0]= R>>22;

  1021.                     dest[1]= G>>22;

  1022.                     dest[2]= B>>22;

  1023.                     dest+= step;

  1024.                 }

  1025.             }

  1026.         }

  1027.         break;

  1028.     case PIX_FMT_ABGR:

  1029.         dest++;

  1030.         aidx= 0;

  1031.     case PIX_FMT_BGR24:

  1032.         aidx--;

  1033.     case PIX_FMT_BGRA:

  1034.         if (CONFIG_SMALL) {

  1035.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1036.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1037.                 dest[aidx]= needAlpha ? A : 255;

  1038.                 dest[0]= B>>22;

  1039.                 dest[1]= G>>22;

  1040.                 dest[2]= R>>22;

  1041.                 dest+= step;

  1042.             }

  1043.         } else {

  1044.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  1045.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1046.                     dest[aidx]= A;

  1047.                     dest[0]= B>>22;

  1048.                     dest[1]= G>>22;

  1049.                     dest[2]= R>>22;

  1050.                     dest+= step;

  1051.                 }

  1052.             } else {

  1053.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1054.                     dest[aidx]= 255;

  1055.                     dest[0]= B>>22;

  1056.                     dest[1]= G>>22;

  1057.                     dest[2]= R>>22;

  1058.                     dest+= step;

  1059.                 }

  1060.             }

  1061.         }

  1062.         break;

  1063.     default:

  1064.         assert(0);

  1065.     }

  1066. }

  1067. 

  1068. static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val)

  1069. {

  1070.     int i;

  1071.     uint8_t *ptr = plane + stride*y;

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

  1073.         memset(ptr, val, width);

  1074.         ptr += stride;

  1075.     }

  1076. }

  1077. 

  1078. static inline void rgb48ToY(uint8_t *dst, const uint8_t *src, long width,

  1079.                             uint32_t *unused)

  1080. {

  1081.     int i;

  1082.     for (i = 0; i < width; i++) {

  1083.         int r = src[i*6+0];

  1084.         int g = src[i*6+2];

  1085.         int b = src[i*6+4];

  1086. 

  1087.         dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1088.     }

  1089. }

  1090. 

  1091. static inline void rgb48ToUV(uint8_t *dstU, uint8_t *dstV,

  1092.                              const uint8_t *src1, const uint8_t *src2,

  1093.                              long width, uint32_t *unused)

  1094. {

  1095.     int i;

  1096.     assert(src1==src2);

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

  1098.         int r = src1[6*i + 0];

  1099.         int g = src1[6*i + 2];

  1100.         int b = src1[6*i + 4];

  1101. 

  1102.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1103.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1104.     }

  1105. }

  1106. 

  1107. static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1108.                                   const uint8_t *src1, const uint8_t *src2,

  1109.                                   long width, uint32_t *unused)

  1110. {

  1111.     int i;

  1112.     assert(src1==src2);

  1113.     for (i = 0; i < width; i++) {

  1114.         int r= src1[12*i + 0] + src1[12*i + 6];

  1115.         int g= src1[12*i + 2] + src1[12*i + 8];

  1116.         int b= src1[12*i + 4] + src1[12*i + 10];

  1117. 

  1118.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1119.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1120.     }

  1121. }

  1122. 

  1123. static inline void bgr48ToY(uint8_t *dst, const uint8_t *src, long width,

  1124.                             uint32_t *unused)

  1125. {

  1126.     int i;

  1127.     for (i = 0; i < width; i++) {

  1128.         int b = src[i*6+0];

  1129.         int g = src[i*6+2];

  1130.         int r = src[i*6+4];

  1131. 

  1132.         dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1133.     }

  1134. }

  1135. 

  1136. static inline void bgr48ToUV(uint8_t *dstU, uint8_t *dstV,

  1137.                              const uint8_t *src1, const uint8_t *src2,

  1138.                              long width, uint32_t *unused)

  1139. {

  1140.     int i;

  1141.     for (i = 0; i < width; i++) {

  1142.         int b = src1[6*i + 0];

  1143.         int g = src1[6*i + 2];

  1144.         int r = src1[6*i + 4];

  1145. 

  1146.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1147.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1148.     }

  1149. }

  1150. 

  1151. static inline void bgr48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1152.                                   const uint8_t *src1, const uint8_t *src2,

  1153.                                   long width, uint32_t *unused)

  1154. {

  1155.     int i;

  1156.     for (i = 0; i < width; i++) {

  1157.         int b= src1[12*i + 0] + src1[12*i + 6];

  1158.         int g= src1[12*i + 2] + src1[12*i + 8];

  1159.         int r= src1[12*i + 4] + src1[12*i + 10];

  1160. 

  1161.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1162.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1163.     }

  1164. }

  1165. 

  1166. #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\

  1167. static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\

  1168. {\

  1169.     int i;\

  1170.     for (i=0; i<width; i++) {\

  1171.         int b= (((const type*)src)[i]>>shb)&maskb;\

  1172.         int g= (((const type*)src)[i]>>shg)&maskg;\

  1173.         int r= (((const type*)src)[i]>>shr)&maskr;\

  1174. \

  1175.         dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\

  1176.     }\

  1177. }

  1178. 

  1179. BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1180. BGR2Y(uint32_t,bgr321ToY,16,16, 0, 0xFF00, 0x00FF, 0xFF00, RY    , GY<<8, BY    , RGB2YUV_SHIFT+8)

  1181. BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1182. BGR2Y(uint32_t,rgb321ToY, 0,16,16, 0xFF00, 0x00FF, 0xFF00, RY    , GY<<8, BY    , RGB2YUV_SHIFT+8)

  1183. BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)

  1184. BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)

  1185. BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)

  1186. BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)

  1187. 

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

  1189. {

  1190.     int i;

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

  1192.         dst[i]= src[4*i];

  1193.     }

  1194. }

  1195. 

  1196. #define BGR2UV(type, name, shr, shg, shb, shp, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S) \

  1197. static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1198. {\

  1199.     int i;\

  1200.     for (i=0; i<width; i++) {\

  1201.         int b= ((((const type*)src)[i]>>shp)&maskb)>>shb;\

  1202.         int g= ((((const type*)src)[i]>>shp)&maskg)>>shg;\

  1203.         int r= ((((const type*)src)[i]>>shp)&maskr)>>shr;\

  1204. \

  1205.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\

  1206.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\

  1207.     }\

  1208. }\

  1209. static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1210. {\

  1211.     int i;\

  1212.     for (i=0; i<width; i++) {\

  1213.         int pix0= ((const type*)src)[2*i+0]>>shp;\

  1214.         int pix1= ((const type*)src)[2*i+1]>>shp;\

  1215.         int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\

  1216.         int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\

  1217.         int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\

  1218.         g&= maskg|(2*maskg);\

  1219. \

  1220.         g>>=shg;\

  1221. \

  1222.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\

  1223.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\

  1224.     }\

  1225. }

  1226. 

  1227. BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1228. BGR2UV(uint32_t,bgr321ToUV,16, 0, 0, 8, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1229. BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1230. BGR2UV(uint32_t,rgb321ToUV, 0, 0,16, 8,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1231. BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0, 0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)

  1232. BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0, 0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)

  1233. BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0, 0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)

  1234. BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0, 0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)

  1235. 

  1236. static inline void palToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)

  1237. {

  1238.     int i;

  1239.     for (i=0; i<width; i++) {

  1240.         int d= src[i];

  1241. 

  1242.         dst[i]= pal[d] >> 24;

  1243.     }

  1244. }

  1245. 

  1246. static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)

  1247. {

  1248.     int i;

  1249.     for (i=0; i<width; i++) {

  1250.         int d= src[i];

  1251. 

  1252.         dst[i]= pal[d] & 0xFF;

  1253.     }

  1254. }

  1255. 

  1256. static inline void palToUV(uint8_t *dstU, uint8_t *dstV,

  1257.                            const uint8_t *src1, const uint8_t *src2,

  1258.                            long width, uint32_t *pal)

  1259. {

  1260.     int i;

  1261.     assert(src1 == src2);

  1262.     for (i=0; i<width; i++) {

  1263.         int p= pal[src1[i]];

  1264. 

  1265.         dstU[i]= p>>8;

  1266.         dstV[i]= p>>16;

  1267.     }

  1268. }

  1269. 

  1270. static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1271. {

  1272.     int i, j;

  1273.     for (i=0; i<width/8; i++) {

  1274.         int d= ~src[i];

  1275.         for(j=0; j<8; j++)

  1276.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1277.     }

  1278. }

  1279. 

  1280. static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1281. {

  1282.     int i, j;

  1283.     for (i=0; i<width/8; i++) {

  1284.         int d= src[i];

  1285.         for(j=0; j<8; j++)

  1286.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1287.     }

  1288. }

  1289. 

  1290. //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one

  1291. //Plain C versions

  1292. #if CONFIG_RUNTIME_CPUDETECT

  1293. #  define COMPILE_C 1

  1294. #  if   ARCH_X86

  1295. #    define COMPILE_MMX     1

  1296. #    define COMPILE_MMX2    1

  1297. #    define COMPILE_3DNOW   1

  1298. #  elif ARCH_PPC

  1299. #    define COMPILE_ALTIVEC HAVE_ALTIVEC

  1300. #  endif

  1301. #else /* CONFIG_RUNTIME_CPUDETECT */

  1302. #  if   ARCH_X86

  1303. #    if   HAVE_MMX2

  1304. #      define COMPILE_MMX2  1

  1305. #    elif HAVE_AMD3DNOW

  1306. #      define COMPILE_3DNOW 1

  1307. #    elif HAVE_MMX

  1308. #      define COMPILE_MMX   1

  1309. #    else

  1310. #      define COMPILE_C     1

  1311. #    endif

  1312. #  elif ARCH_PPC && HAVE_ALTIVEC

  1313. #    define COMPILE_ALTIVEC 1

  1314. #  else

  1315. #    define COMPILE_C       1

  1316. #  endif

  1317. #endif

  1318. 

  1319. #ifndef COMPILE_C

  1320. #  define COMPILE_C 0

  1321. #endif

  1322. #ifndef COMPILE_MMX

  1323. #  define COMPILE_MMX 0

  1324. #endif

  1325. #ifndef COMPILE_MMX2

  1326. #  define COMPILE_MMX2 0

  1327. #endif

  1328. #ifndef COMPILE_3DNOW

  1329. #  define COMPILE_3DNOW 0

  1330. #endif

  1331. #ifndef COMPILE_ALTIVEC

  1332. #  define COMPILE_ALTIVEC 0

  1333. #endif

  1334. 

  1335. #define COMPILE_TEMPLATE_MMX 0

  1336. #define COMPILE_TEMPLATE_MMX2 0

  1337. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1338. #define COMPILE_TEMPLATE_ALTIVEC 0

  1339. 

  1340. #if COMPILE_C

  1341. #define RENAME(a) a ## _C

  1342. #include "swscale_template.c"

  1343. #endif

  1344. 

  1345. #if COMPILE_ALTIVEC

  1346. #undef RENAME

  1347. #undef COMPILE_TEMPLATE_ALTIVEC

  1348. #define COMPILE_TEMPLATE_ALTIVEC 1

  1349. #define RENAME(a) a ## _altivec

  1350. #include "swscale_template.c"

  1351. #endif

  1352. 

  1353. #if ARCH_X86

  1354. 

  1355. //MMX versions

  1356. #if COMPILE_MMX

  1357. #undef RENAME

  1358. #undef COMPILE_TEMPLATE_MMX

  1359. #undef COMPILE_TEMPLATE_MMX2

  1360. #undef COMPILE_TEMPLATE_AMD3DNOW

  1361. #define COMPILE_TEMPLATE_MMX 1

  1362. #define COMPILE_TEMPLATE_MMX2 0

  1363. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1364. #define RENAME(a) a ## _MMX

  1365. #include "swscale_template.c"

  1366. #endif

  1367. 

  1368. //MMX2 versions

  1369. #if COMPILE_MMX2

  1370. #undef RENAME

  1371. #undef COMPILE_TEMPLATE_MMX

  1372. #undef COMPILE_TEMPLATE_MMX2

  1373. #undef COMPILE_TEMPLATE_AMD3DNOW

  1374. #define COMPILE_TEMPLATE_MMX 1

  1375. #define COMPILE_TEMPLATE_MMX2 1

  1376. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1377. #define RENAME(a) a ## _MMX2

  1378. #include "swscale_template.c"

  1379. #endif

  1380. 

  1381. //3DNOW versions

  1382. #if COMPILE_3DNOW

  1383. #undef RENAME

  1384. #undef COMPILE_TEMPLATE_MMX

  1385. #undef COMPILE_TEMPLATE_MMX2

  1386. #undef COMPILE_TEMPLATE_AMD3DNOW

  1387. #define COMPILE_TEMPLATE_MMX 1

  1388. #define COMPILE_TEMPLATE_MMX2 0

  1389. #define COMPILE_TEMPLATE_AMD3DNOW 1

  1390. #define RENAME(a) a ## _3DNow

  1391. #include "swscale_template.c"

  1392. #endif

  1393. 

  1394. #endif //ARCH_X86

  1395. 

  1396. SwsFunc ff_getSwsFunc(SwsContext *c)

  1397. {

  1398. #if CONFIG_RUNTIME_CPUDETECT

  1399.     int flags = c->flags;

  1400. 

  1401. #if ARCH_X86

  1402.     // ordered per speed fastest first

  1403.     if (flags & SWS_CPU_CAPS_MMX2) {

  1404.         sws_init_swScale_MMX2(c);

  1405.         return swScale_MMX2;

  1406.     } else if (flags & SWS_CPU_CAPS_3DNOW) {

  1407.         sws_init_swScale_3DNow(c);

  1408.         return swScale_3DNow;

  1409.     } else if (flags & SWS_CPU_CAPS_MMX) {

  1410.         sws_init_swScale_MMX(c);

  1411.         return swScale_MMX;

  1412.     } else {

  1413.         sws_init_swScale_C(c);

  1414.         return swScale_C;

  1415.     }

  1416. 

  1417. #else

  1418. #if COMPILE_ALTIVEC

  1419.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1420.         sws_init_swScale_altivec(c);

  1421.         return swScale_altivec;

  1422.     } else {

  1423.         sws_init_swScale_C(c);

  1424.         return swScale_C;

  1425.     }

  1426. #endif

  1427.     sws_init_swScale_C(c);

  1428.     return swScale_C;

  1429. #endif /* ARCH_X86 */

  1430. #else //CONFIG_RUNTIME_CPUDETECT

  1431. #if   COMPILE_TEMPLATE_MMX2

  1432.     sws_init_swScale_MMX2(c);

  1433.     return swScale_MMX2;

  1434. #elif COMPILE_TEMPLATE_AMD3DNOW

  1435.     sws_init_swScale_3DNow(c);

  1436.     return swScale_3DNow;

  1437. #elif COMPILE_TEMPLATE_MMX

  1438.     sws_init_swScale_MMX(c);

  1439.     return swScale_MMX;

  1440. #elif COMPILE_TEMPLATE_ALTIVEC

  1441.     sws_init_swScale_altivec(c);

  1442.     return swScale_altivec;

  1443. #else

  1444.     sws_init_swScale_C(c);

  1445.     return swScale_C;

  1446. #endif

  1447. #endif //!CONFIG_RUNTIME_CPUDETECT

  1448. }

  1449. 

  1450. static void copyPlane(const uint8_t *src, int srcStride,

  1451.                       int srcSliceY, int srcSliceH, int width,

  1452.                       uint8_t *dst, int dstStride)

  1453. {

  1454.     dst += dstStride * srcSliceY;

  1455.     if (dstStride == srcStride && srcStride > 0) {

  1456.         memcpy(dst, src, srcSliceH * dstStride);

  1457.     } else {

  1458.         int i;

  1459.         for (i=0; i<srcSliceH; i++) {

  1460.             memcpy(dst, src, width);

  1461.             src += srcStride;

  1462.             dst += dstStride;

  1463.         }

  1464.     }

  1465. }

  1466. 

  1467. static int planarToNv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1468.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1469. {

  1470.     uint8_t *dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1471. 

  1472.     copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,

  1473.               dstParam[0], dstStride[0]);

  1474. 

  1475.     if (c->dstFormat == PIX_FMT_NV12)

  1476.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  1477.     else

  1478.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  1479. 

  1480.     return srcSliceH;

  1481. }

  1482. 

  1483. static int planarToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1484.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1485. {

  1486.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1487. 

  1488.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1489. 

  1490.     return srcSliceH;

  1491. }

  1492. 

  1493. static int planarToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1494.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1495. {

  1496.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1497. 

  1498.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1499. 

  1500.     return srcSliceH;

  1501. }

  1502. 

  1503. static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1504.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1505. {

  1506.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1507. 

  1508.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1509. 

  1510.     return srcSliceH;

  1511. }

  1512. 

  1513. static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1514.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1515. {

  1516.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1517. 

  1518.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1519. 

  1520.     return srcSliceH;

  1521. }

  1522. 

  1523. static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1524.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1525. {

  1526.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1527.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  1528.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  1529. 

  1530.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1531. 

  1532.     if (dstParam[3])

  1533.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1534. 

  1535.     return srcSliceH;

  1536. }

  1537. 

  1538. static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1539.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1540. {

  1541.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1542.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  1543.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  1544. 

  1545.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1546. 

  1547.     return srcSliceH;

  1548. }

  1549. 

  1550. static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1551.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1552. {

  1553.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1554.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  1555.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  1556. 

  1557.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1558. 

  1559.     if (dstParam[3])

  1560.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1561. 

  1562.     return srcSliceH;

  1563. }

  1564. 

  1565. static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1566.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1567. {

  1568.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1569.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  1570.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  1571. 

  1572.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1573. 

  1574.     return srcSliceH;

  1575. }

  1576. 

  1577. static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  1578. {

  1579.     long i;

  1580.     for (i=0; i<num_pixels; i++)

  1581.         ((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | (src[(i<<1)+1] << 24);

  1582. }

  1583. 

  1584. static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  1585. {

  1586.     long i;

  1587. 

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

  1589.         ((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | src[(i<<1)+1];

  1590. }

  1591. 

  1592. static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  1593. {

  1594.     long i;

  1595. 

  1596.     for (i=0; i<num_pixels; i++) {

  1597.         //FIXME slow?

  1598.         dst[0]= palette[src[i<<1]*4+0];

  1599.         dst[1]= palette[src[i<<1]*4+1];

  1600.         dst[2]= palette[src[i<<1]*4+2];

  1601.         dst+= 3;

  1602.     }

  1603. }

  1604. 

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

  1606.                            int srcSliceH, uint8_t* dst[], int dstStride[])

  1607. {

  1608.     const enum PixelFormat srcFormat= c->srcFormat;

  1609.     const enum PixelFormat dstFormat= c->dstFormat;

  1610.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  1611.                  const uint8_t *palette)=NULL;

  1612.     int i;

  1613.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1614.     const uint8_t *srcPtr= src[0];

  1615. 

  1616.     if (srcFormat == PIX_FMT_GRAY8A) {

  1617.         switch (dstFormat) {

  1618.         case PIX_FMT_RGB32  : conv = gray8aToPacked32; break;

  1619.         case PIX_FMT_BGR32  : conv = gray8aToPacked32; break;

  1620.         case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;

  1621.         case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;

  1622.         case PIX_FMT_RGB24  : conv = gray8aToPacked24; break;

  1623.         case PIX_FMT_BGR24  : conv = gray8aToPacked24; break;

  1624.         }

  1625.     } else if (usePal(srcFormat)) {

  1626.         switch (dstFormat) {

  1627.         case PIX_FMT_RGB32  : conv = sws_convertPalette8ToPacked32; break;

  1628.         case PIX_FMT_BGR32  : conv = sws_convertPalette8ToPacked32; break;

  1629.         case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;

  1630.         case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;

  1631.         case PIX_FMT_RGB24  : conv = sws_convertPalette8ToPacked24; break;

  1632.         case PIX_FMT_BGR24  : conv = sws_convertPalette8ToPacked24; break;

  1633.         }

  1634.     }

  1635. 

  1636.     if (!conv)

  1637.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1638.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1639.     else {

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

  1641.             conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  1642.             srcPtr+= srcStride[0];

  1643.             dstPtr+= dstStride[0];

  1644.         }

  1645.     }

  1646. 

  1647.     return srcSliceH;

  1648. }

  1649. 

  1650. #define isRGBA32(x) (            \

  1651.            (x) == PIX_FMT_ARGB   \

  1652.         || (x) == PIX_FMT_RGBA   \

  1653.         || (x) == PIX_FMT_BGRA   \

  1654.         || (x) == PIX_FMT_ABGR   \

  1655.         )

  1656. 

  1657. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  1658. static int rgbToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1659.                            int srcSliceH, uint8_t* dst[], int dstStride[])

  1660. {

  1661.     const enum PixelFormat srcFormat= c->srcFormat;

  1662.     const enum PixelFormat dstFormat= c->dstFormat;

  1663.     const int srcBpp= (c->srcFormatBpp + 7) >> 3;

  1664.     const int dstBpp= (c->dstFormatBpp + 7) >> 3;

  1665.     const int srcId= c->srcFormatBpp >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1666.     const int dstId= c->dstFormatBpp >> 2;

  1667.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1668. 

  1669. #define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)

  1670. 

  1671.     if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {

  1672.         if (     CONV_IS(ABGR, RGBA)

  1673.               || CONV_IS(ARGB, BGRA)

  1674.               || CONV_IS(BGRA, ARGB)

  1675.               || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;

  1676.         else if (CONV_IS(ABGR, ARGB)

  1677.               || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;

  1678.         else if (CONV_IS(ABGR, BGRA)

  1679.               || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;

  1680.         else if (CONV_IS(BGRA, RGBA)

  1681.               || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;

  1682.         else if (CONV_IS(BGRA, ABGR)

  1683.               || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;

  1684.     } else

  1685.     /* BGR -> BGR */

  1686.     if (  (isBGRinInt(srcFormat) && isBGRinInt(dstFormat))

  1687.        || (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {

  1688.         switch(srcId | (dstId<<4)) {

  1689.         case 0x34: conv= rgb16to15; break;

  1690.         case 0x36: conv= rgb24to15; break;

  1691.         case 0x38: conv= rgb32to15; break;

  1692.         case 0x43: conv= rgb15to16; break;

  1693.         case 0x46: conv= rgb24to16; break;

  1694.         case 0x48: conv= rgb32to16; break;

  1695.         case 0x63: conv= rgb15to24; break;

  1696.         case 0x64: conv= rgb16to24; break;

  1697.         case 0x68: conv= rgb32to24; break;

  1698.         case 0x83: conv= rgb15to32; break;

  1699.         case 0x84: conv= rgb16to32; break;

  1700.         case 0x86: conv= rgb24to32; break;

  1701.         }

  1702.     } else if (  (isBGRinInt(srcFormat) && isRGBinInt(dstFormat))

  1703.              || (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {

  1704.         switch(srcId | (dstId<<4)) {

  1705.         case 0x33: conv= rgb15tobgr15; break;

  1706.         case 0x34: conv= rgb16tobgr15; break;

  1707.         case 0x36: conv= rgb24tobgr15; break;

  1708.         case 0x38: conv= rgb32tobgr15; break;

  1709.         case 0x43: conv= rgb15tobgr16; break;

  1710.         case 0x44: conv= rgb16tobgr16; break;

  1711.         case 0x46: conv= rgb24tobgr16; break;

  1712.         case 0x48: conv= rgb32tobgr16; break;

  1713.         case 0x63: conv= rgb15tobgr24; break;

  1714.         case 0x64: conv= rgb16tobgr24; break;

  1715.         case 0x66: conv= rgb24tobgr24; break;

  1716.         case 0x68: conv= rgb32tobgr24; break;

  1717.         case 0x83: conv= rgb15tobgr32; break;

  1718.         case 0x84: conv= rgb16tobgr32; break;

  1719.         case 0x86: conv= rgb24tobgr32; break;

  1720.         }

  1721.     }

  1722. 

  1723.     if (!conv) {

  1724.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1725.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1726.     } else {

  1727.         const uint8_t *srcPtr= src[0];

  1728.               uint8_t *dstPtr= dst[0];

  1729.         if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) && !isRGBA32(dstFormat))

  1730.             srcPtr += ALT32_CORR;

  1731. 

  1732.         if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) && !isRGBA32(srcFormat))

  1733.             dstPtr += ALT32_CORR;

  1734. 

  1735.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0 && !(srcStride[0]%srcBpp))

  1736.             conv(srcPtr, dstPtr + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1737.         else {

  1738.             int i;

  1739.             dstPtr += dstStride[0]*srcSliceY;

  1740. 

  1741.             for (i=0; i<srcSliceH; i++) {

  1742.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1743.                 srcPtr+= srcStride[0];

  1744.                 dstPtr+= dstStride[0];

  1745.             }

  1746.         }

  1747.     }

  1748.     return srcSliceH;

  1749. }

  1750. 

  1751. static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1752.                               int srcSliceH, uint8_t* dst[], int dstStride[])

  1753. {

  1754.     rgb24toyv12(

  1755.         src[0],

  1756.         dst[0]+ srcSliceY    *dstStride[0],

  1757.         dst[1]+(srcSliceY>>1)*dstStride[1],

  1758.         dst[2]+(srcSliceY>>1)*dstStride[2],

  1759.         c->srcW, srcSliceH,

  1760.         dstStride[0], dstStride[1], srcStride[0]);

  1761.     if (dst[3])

  1762.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1763.     return srcSliceH;

  1764. }

  1765. 

  1766. static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1767.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1768. {

  1769.     copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,

  1770.               dst[0], dstStride[0]);

  1771. 

  1772.     planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  1773.              srcSliceH >> 2, srcStride[1], dstStride[1]);

  1774.     planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  1775.              srcSliceH >> 2, srcStride[2], dstStride[2]);

  1776.     if (dst[3])

  1777.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1778.     return srcSliceH;

  1779. }

  1780. 

  1781. /* unscaled copy like stuff (assumes nearly identical formats) */

  1782. static int packedCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1783.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1784. {

  1785.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1786.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1787.     else {

  1788.         int i;

  1789.         const uint8_t *srcPtr= src[0];

  1790.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1791.         int length=0;

  1792. 

  1793.         /* universal length finder */

  1794.         while(length+c->srcW <= FFABS(dstStride[0])

  1795.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  1796.         assert(length!=0);

  1797. 

  1798.         for (i=0; i<srcSliceH; i++) {

  1799.             memcpy(dstPtr, srcPtr, length);

  1800.             srcPtr+= srcStride[0];

  1801.             dstPtr+= dstStride[0];

  1802.         }

  1803.     }

  1804.     return srcSliceH;

  1805. }

  1806. 

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

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

  1809. {

  1810.     int plane, i, j;

  1811.     for (plane=0; plane<4; plane++) {

  1812.         int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1813.         int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1814.         int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1815.         const uint8_t *srcPtr= src[plane];

  1816.         uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  1817. 

  1818.         if (!dst[plane]) continue;

  1819.         // ignore palette for GRAY8

  1820.         if (plane == 1 && !dst[2]) continue;

  1821.         if (!src[plane] || (plane == 1 && !src[2])) {

  1822.             if(is16BPS(c->dstFormat))

  1823.                 length*=2;

  1824.             fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);

  1825.         } else {

  1826.             if(isNBPS(c->srcFormat)) {

  1827.                 const int depth = av_pix_fmt_descriptors[c->srcFormat].comp[plane].depth_minus1+1;

  1828.                 uint16_t *srcPtr2 = (uint16_t*)srcPtr;

  1829. 

  1830.                 if (is16BPS(c->dstFormat)) {

  1831.                     uint16_t *dstPtr2 = (uint16_t*)dstPtr;

  1832.                     for (i = 0; i < height; i++) {

  1833.                         for (j = 0; j < length; j++)

  1834.                             dstPtr2[j] = (srcPtr2[j]<<(16-depth)) | (srcPtr2[j]>>(2*depth-16));

  1835.                         dstPtr2 += dstStride[plane]/2;

  1836.                         srcPtr2 += srcStride[plane]/2;

  1837.                     }

  1838.                 } else {

  1839.                     for (i = 0; i < height; i++) {

  1840.                         uint8_t *dither= dithers[depth-9][i&7];

  1841.                         for (j = 0; j < length-7; j+=8){

  1842.                             dstPtr[j+0] = (srcPtr2[j+0] + dither[0])>>(depth-8);

  1843.                             dstPtr[j+1] = (srcPtr2[j+1] + dither[1])>>(depth-8);

  1844.                             dstPtr[j+2] = (srcPtr2[j+2] + dither[2])>>(depth-8);

  1845.                             dstPtr[j+3] = (srcPtr2[j+3] + dither[3])>>(depth-8);

  1846.                             dstPtr[j+4] = (srcPtr2[j+4] + dither[4])>>(depth-8);

  1847.                             dstPtr[j+5] = (srcPtr2[j+5] + dither[5])>>(depth-8);

  1848.                             dstPtr[j+6] = (srcPtr2[j+6] + dither[6])>>(depth-8);

  1849.                             dstPtr[j+7] = (srcPtr2[j+7] + dither[7])>>(depth-8);

  1850.                         }

  1851.                         for (; j < length; j++)

  1852.                             dstPtr[j] = (srcPtr2[j] + dither[j&7])>>(depth-8);

  1853.                         dstPtr  += dstStride[plane];

  1854.                         srcPtr2 += srcStride[plane]/2;

  1855.                     }

  1856.                 }

  1857.             } else if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {

  1858.                 //FIXME add dither

  1859.                 if (!isBE(c->srcFormat)) srcPtr++;

  1860.                 for (i=0; i<height; i++) {

  1861.                     for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  1862.                     srcPtr+= srcStride[plane];

  1863.                     dstPtr+= dstStride[plane];

  1864.                 }

  1865.             } else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {

  1866.                 for (i=0; i<height; i++) {

  1867.                     for (j=0; j<length; j++) {

  1868.                         dstPtr[ j<<1   ] = srcPtr[j];

  1869.                         dstPtr[(j<<1)+1] = srcPtr[j];

  1870.                     }

  1871.                     srcPtr+= srcStride[plane];

  1872.                     dstPtr+= dstStride[plane];

  1873.                 }

  1874.             } else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)

  1875.                   && isBE(c->srcFormat) != isBE(c->dstFormat)) {

  1876. 

  1877.                 for (i=0; i<height; i++) {

  1878.                     for (j=0; j<length; j++)

  1879.                         ((uint16_t*)dstPtr)[j] = av_bswap16(((const uint16_t*)srcPtr)[j]);

  1880.                     srcPtr+= srcStride[plane];

  1881.                     dstPtr+= dstStride[plane];

  1882.                 }

  1883.             } else if (dstStride[plane] == srcStride[plane] &&

  1884.                        srcStride[plane] > 0 && srcStride[plane] == length) {

  1885.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane],

  1886.                        height*dstStride[plane]);

  1887.             } else {

  1888.                 if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))

  1889.                     length*=2;

  1890.                 for (i=0; i<height; i++) {

  1891.                     memcpy(dstPtr, srcPtr, length);

  1892.                     srcPtr+= srcStride[plane];

  1893.                     dstPtr+= dstStride[plane];

  1894.                 }

  1895.             }

  1896.         }

  1897.     }

  1898.     return srcSliceH;

  1899. }

  1900. 

  1901. int ff_hardcodedcpuflags(void)

  1902. {

  1903.     int flags = 0;

  1904. #if   COMPILE_TEMPLATE_MMX2

  1905.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  1906. #elif COMPILE_TEMPLATE_AMD3DNOW

  1907.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  1908. #elif COMPILE_TEMPLATE_MMX

  1909.     flags |= SWS_CPU_CAPS_MMX;

  1910. #elif COMPILE_TEMPLATE_ALTIVEC

  1911.     flags |= SWS_CPU_CAPS_ALTIVEC;

  1912. #elif ARCH_BFIN

  1913.     flags |= SWS_CPU_CAPS_BFIN;

  1914. #endif

  1915.     return flags;

  1916. }

  1917. 

  1918. void ff_get_unscaled_swscale(SwsContext *c)

  1919. {

  1920.     const enum PixelFormat srcFormat = c->srcFormat;

  1921.     const enum PixelFormat dstFormat = c->dstFormat;

  1922.     const int flags = c->flags;

  1923.     const int dstH = c->dstH;

  1924.     int needsDither;

  1925. 

  1926.     needsDither= isAnyRGB(dstFormat)

  1927.         &&  c->dstFormatBpp < 24

  1928.         && (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));

  1929. 

  1930.     /* yv12_to_nv12 */

  1931.     if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {

  1932.         c->swScale= planarToNv12Wrapper;

  1933.     }

  1934.     /* yuv2bgr */

  1935.     if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && isAnyRGB(dstFormat)

  1936.         && !(flags & SWS_ACCURATE_RND) && !(dstH&1)) {

  1937.         c->swScale= ff_yuv2rgb_get_func_ptr(c);

  1938.     }

  1939. 

  1940.     if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT)) {

  1941.         c->swScale= yvu9ToYv12Wrapper;

  1942.     }

  1943. 

  1944.     /* bgr24toYV12 */

  1945.     if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))

  1946.         c->swScale= bgr24ToYv12Wrapper;

  1947. 

  1948.     /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  1949.     if (   isAnyRGB(srcFormat)

  1950.         && isAnyRGB(dstFormat)

  1951.         && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  1952.         && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  1953.         && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  1954.         && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  1955.         && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  1956.         && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  1957.         && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  1958.         && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  1959.         && srcFormat != PIX_FMT_RGB48LE   && dstFormat != PIX_FMT_RGB48LE

  1960.         && srcFormat != PIX_FMT_RGB48BE   && dstFormat != PIX_FMT_RGB48BE

  1961.         && srcFormat != PIX_FMT_BGR48LE   && dstFormat != PIX_FMT_BGR48LE

  1962.         && srcFormat != PIX_FMT_BGR48BE   && dstFormat != PIX_FMT_BGR48BE

  1963.         && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  1964.         c->swScale= rgbToRgbWrapper;

  1965. 

  1966.     if ((usePal(srcFormat) && (

  1967.         dstFormat == PIX_FMT_RGB32   ||

  1968.         dstFormat == PIX_FMT_RGB32_1 ||

  1969.         dstFormat == PIX_FMT_RGB24   ||

  1970.         dstFormat == PIX_FMT_BGR32   ||

  1971.         dstFormat == PIX_FMT_BGR32_1 ||

  1972.         dstFormat == PIX_FMT_BGR24)))

  1973.         c->swScale= palToRgbWrapper;

  1974. 

  1975.     if (srcFormat == PIX_FMT_YUV422P) {

  1976.         if (dstFormat == PIX_FMT_YUYV422)

  1977.             c->swScale= yuv422pToYuy2Wrapper;

  1978.         else if (dstFormat == PIX_FMT_UYVY422)

  1979.             c->swScale= yuv422pToUyvyWrapper;

  1980.     }

  1981. 

  1982.     /* LQ converters if -sws 0 or -sws 4*/

  1983.     if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {

  1984.         /* yv12_to_yuy2 */

  1985.         if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {

  1986.             if (dstFormat == PIX_FMT_YUYV422)

  1987.                 c->swScale= planarToYuy2Wrapper;

  1988.             else if (dstFormat == PIX_FMT_UYVY422)

  1989.                 c->swScale= planarToUyvyWrapper;

  1990.         }

  1991.     }

  1992.     if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  1993.         c->swScale= yuyvToYuv420Wrapper;

  1994.     if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  1995.         c->swScale= uyvyToYuv420Wrapper;

  1996.     if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)

  1997.         c->swScale= yuyvToYuv422Wrapper;

  1998.     if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)

  1999.         c->swScale= uyvyToYuv422Wrapper;

  2000. 

  2001. #if COMPILE_ALTIVEC

  2002.     if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2003.         !(c->flags & SWS_BITEXACT) &&

  2004.         srcFormat == PIX_FMT_YUV420P) {

  2005.         // unscaled YV12 -> packed YUV, we want speed

  2006.         if (dstFormat == PIX_FMT_YUYV422)

  2007.             c->swScale= yv12toyuy2_unscaled_altivec;

  2008.         else if (dstFormat == PIX_FMT_UYVY422)

  2009.             c->swScale= yv12touyvy_unscaled_altivec;

  2010.     }

  2011. #endif

  2012. 

  2013.     /* simple copy */

  2014.     if (  srcFormat == dstFormat

  2015.         || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)

  2016.         || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)

  2017.         || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2018.         || (isPlanarYUV(dstFormat) && isGray(srcFormat))

  2019.         || (isGray(dstFormat) && isGray(srcFormat))

  2020.         || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)

  2021.             && c->chrDstHSubSample == c->chrSrcHSubSample

  2022.             && c->chrDstVSubSample == c->chrSrcVSubSample

  2023.             && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21

  2024.             && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))

  2025.     {

  2026.         if (isPacked(c->srcFormat))

  2027.             c->swScale= packedCopyWrapper;

  2028.         else /* Planar YUV or gray */

  2029.             c->swScale= planarCopyWrapper;

  2030.     }

  2031. #if ARCH_BFIN

  2032.     if (flags & SWS_CPU_CAPS_BFIN)

  2033.         ff_bfin_get_unscaled_swscale (c);

  2034. #endif

  2035. }

  2036. 

  2037. static void reset_ptr(const uint8_t* src[], int format)

  2038. {

  2039.     if(!isALPHA(format))

  2040.         src[3]=NULL;

  2041.     if(!isPlanarYUV(format)) {

  2042.         src[3]=src[2]=NULL;

  2043. 

  2044.         if (!usePal(format))

  2045.             src[1]= NULL;

  2046.     }

  2047. }

  2048. 

  2049. static int check_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt,

  2050.                                 const int linesizes[4])

  2051. {

  2052.     const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];

  2053.     int i;

  2054. 

  2055.     for (i = 0; i < 4; i++) {

  2056.         int plane = desc->comp[i].plane;

  2057.         if (!data[plane] || !linesizes[plane])

  2058.             return 0;

  2059.     }

  2060. 

  2061.     return 1;

  2062. }

  2063. 

  2064. /**

  2065.  * swscale wrapper, so we don't need to export the SwsContext.

  2066.  * Assumes planar YUV to be in YUV order instead of YVU.

  2067.  */

  2068. int sws_scale(SwsContext *c, const uint8_t* const src[], const int srcStride[], int srcSliceY,

  2069.               int srcSliceH, uint8_t* const dst[], const int dstStride[])

  2070. {

  2071.     int i;

  2072.     const uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};

  2073.     uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};

  2074. 

  2075.     // do not mess up sliceDir if we have a "trailing" 0-size slice

  2076.     if (srcSliceH == 0)

  2077.         return 0;

  2078. 

  2079.     if (!check_image_pointers(src, c->srcFormat, srcStride)) {

  2080.         av_log(c, AV_LOG_ERROR, "bad src image pointers\n");

  2081.         return 0;

  2082.     }

  2083.     if (!check_image_pointers(dst, c->dstFormat, dstStride)) {

  2084.         av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");

  2085.         return 0;

  2086.     }

  2087. 

  2088.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  2089.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  2090.         return 0;

  2091.     }

  2092.     if (c->sliceDir == 0) {

  2093.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  2094.     }

  2095. 

  2096.     if (usePal(c->srcFormat)) {

  2097.         for (i=0; i<256; i++) {

  2098.             int p, r, g, b, y, u, v, a = 0xff;

  2099.             if(c->srcFormat == PIX_FMT_PAL8) {

  2100.                 p=((const uint32_t*)(src[1]))[i];

  2101.                 a= (p>>24)&0xFF;

  2102.                 r= (p>>16)&0xFF;

  2103.                 g= (p>> 8)&0xFF;

  2104.                 b=  p     &0xFF;

  2105.             } else if(c->srcFormat == PIX_FMT_RGB8) {

  2106.                 r= (i>>5    )*36;

  2107.                 g= ((i>>2)&7)*36;

  2108.                 b= (i&3     )*85;

  2109.             } else if(c->srcFormat == PIX_FMT_BGR8) {

  2110.                 b= (i>>6    )*85;

  2111.                 g= ((i>>3)&7)*36;

  2112.                 r= (i&7     )*36;

  2113.             } else if(c->srcFormat == PIX_FMT_RGB4_BYTE) {

  2114.                 r= (i>>3    )*255;

  2115.                 g= ((i>>1)&3)*85;

  2116.                 b= (i&1     )*255;

  2117.             } else if(c->srcFormat == PIX_FMT_GRAY8 || c->srcFormat == PIX_FMT_GRAY8A) {

  2118.                 r = g = b = i;

  2119.             } else {

  2120.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  2121.                 b= (i>>3    )*255;

  2122.                 g= ((i>>1)&3)*85;

  2123.                 r= (i&1     )*255;

  2124.             }

  2125.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2126.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2127.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2128.             c->pal_yuv[i]= y + (u<<8) + (v<<16) + (a<<24);

  2129. 

  2130.             switch(c->dstFormat) {

  2131.             case PIX_FMT_BGR32:

  2132. #if !HAVE_BIGENDIAN

  2133.             case PIX_FMT_RGB24:

  2134. #endif

  2135.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16) + (a<<24);

  2136.                 break;

  2137.             case PIX_FMT_BGR32_1:

  2138. #if HAVE_BIGENDIAN

  2139.             case PIX_FMT_BGR24:

  2140. #endif

  2141.                 c->pal_rgb[i]= a + (r<<8) + (g<<16) + (b<<24);

  2142.                 break;

  2143.             case PIX_FMT_RGB32_1:

  2144. #if HAVE_BIGENDIAN

  2145.             case PIX_FMT_RGB24:

  2146. #endif

  2147.                 c->pal_rgb[i]= a + (b<<8) + (g<<16) + (r<<24);

  2148.                 break;

  2149.             case PIX_FMT_RGB32:

  2150. #if !HAVE_BIGENDIAN

  2151.             case PIX_FMT_BGR24:

  2152. #endif

  2153.             default:

  2154.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16) + (a<<24);

  2155.             }

  2156.         }

  2157.     }

  2158. 

  2159.     // copy strides, so they can safely be modified

  2160.     if (c->sliceDir == 1) {

  2161.         // slices go from top to bottom

  2162.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};

  2163.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};

  2164. 

  2165.         reset_ptr(src2, c->srcFormat);

  2166.         reset_ptr((const uint8_t**)dst2, c->dstFormat);

  2167. 

  2168.         /* reset slice direction at end of frame */

  2169.         if (srcSliceY + srcSliceH == c->srcH)

  2170.             c->sliceDir = 0;

  2171. 

  2172.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);

  2173.     } else {

  2174.         // slices go from bottom to top => we flip the image internally

  2175.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};

  2176.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};

  2177. 

  2178.         src2[0] += (srcSliceH-1)*srcStride[0];

  2179.         if (!usePal(c->srcFormat))

  2180.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  2181.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  2182.         src2[3] += (srcSliceH-1)*srcStride[3];

  2183.         dst2[0] += ( c->dstH                      -1)*dstStride[0];

  2184.         dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];

  2185.         dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];

  2186.         dst2[3] += ( c->dstH                      -1)*dstStride[3];

  2187. 

  2188.         reset_ptr(src2, c->srcFormat);

  2189.         reset_ptr((const uint8_t**)dst2, c->dstFormat);

  2190. 

  2191.         /* reset slice direction at end of frame */

  2192.         if (!srcSliceY)

  2193.             c->sliceDir = 0;

  2194. 

  2195.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  2196.     }

  2197. }

  2198. 

  2199. #if LIBSWSCALE_VERSION_MAJOR < 1

  2200. int sws_scale_ordered(SwsContext *c, const uint8_t* const src[], int srcStride[], int srcSliceY,

  2201.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2202. {

  2203.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  2204. }

  2205. #endif

  2206. 

  2207. /* Convert the palette to the same packed 32-bit format as the palette */

  2208. void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  2209. {

  2210.     long i;

  2211. 

  2212.     for (i=0; i<num_pixels; i++)

  2213.         ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];

  2214. }

  2215. 

  2216. /* Palette format: ABCD -> dst format: ABC */

  2217. void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  2218. {

  2219.     long i;

  2220. 

  2221.     for (i=0; i<num_pixels; i++) {

  2222.         //FIXME slow?

  2223.         dst[0]= palette[src[i]*4+0];

  2224.         dst[1]= palette[src[i]*4+1];

  2225.         dst[2]= palette[src[i]*4+2];

  2226.         dst+= 3;

  2227.     }

  2228. }