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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 program is free software; you can redistribute it and/or modify

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

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

  7.     (at your option) any later version.

  8. 

  9.     This program is distributed in the hope that it will be useful,

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

  11.     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  12.     GNU General Public License for more details.

  13. 

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

  15.     along with this program; if not, write to the Free Software

  16.     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

  17. 

  18.     the C code (not assembly, mmx, ...) of the swscaler which has been written

  19.     by Michael Niedermayer can be used under the LGPL license too

  20. */

  21. 

  22. /*

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

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

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

  26.   

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

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

  29.   x -> x

  30.   YUV9 -> YV12

  31.   YUV9/YV12 -> Y800

  32.   Y800 -> YUV9/YV12

  33.   BGR24 -> BGR32 & RGB24 -> RGB32

  34.   BGR32 -> BGR24 & RGB32 -> RGB24

  35.   BGR15 -> BGR16

  36. */

  37. 

  38. /* 

  39. tested special converters (most are tested actually but i didnt write it down ...)

  40.  YV12 -> BGR16

  41.  YV12 -> YV12

  42.  BGR15 -> BGR16

  43.  BGR16 -> BGR16

  44.  YVU9 -> YV12

  45. 

  46. untested special converters

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

  48.   YV12/I420 -> YV12/I420

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

  50.   BGR24 -> BGR32 & RGB24 -> RGB32

  51.   BGR32 -> BGR24 & RGB32 -> RGB24

  52.   BGR24 -> YV12

  53. */

  54. 

  55. #include <inttypes.h>

  56. #include <string.h>

  57. #include <math.h>

  58. #include <stdio.h>

  59. #include <unistd.h>

  60. #include "config.h"

  61. #include <assert.h>

  62. #ifdef HAVE_MALLOC_H

  63. #include <malloc.h>

  64. #else

  65. #include <stdlib.h>

  66. #endif

  67. #ifdef HAVE_SYS_MMAN_H

  68. #include <sys/mman.h>

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

  70. #define MAP_ANONYMOUS MAP_ANON

  71. #endif

  72. #endif

  73. #include "swscale.h"

  74. #include "swscale_internal.h"

  75. #include "x86_cpu.h"

  76. #include "bswap.h"

  77. #include "rgb2rgb.h"

  78. #ifdef USE_FASTMEMCPY

  79. #include "libvo/fastmemcpy.h"

  80. #endif

  81. 

  82. #undef MOVNTQ

  83. #undef PAVGB

  84. 

  85. //#undef HAVE_MMX2

  86. //#define HAVE_3DNOW

  87. //#undef HAVE_MMX

  88. //#undef ARCH_X86

  89. //#define WORDS_BIGENDIAN

  90. #define DITHER1XBPP

  91. 

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

  93. 

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

  95. 

  96. #ifdef MP_DEBUG

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

  98. #else

  99. #define ASSERT(x) ;

  100. #endif

  101. 

  102. #ifdef M_PI

  103. #define PI M_PI

  104. #else

  105. #define PI 3.14159265358979323846

  106. #endif

  107. 

  108. #define isSupportedIn(x)  ((x)==PIX_FMT_YUV420P || (x)==PIX_FMT_YUYV422 || (x)==PIX_FMT_UYVY422\

  109. 			|| (x)==PIX_FMT_RGB32|| (x)==PIX_FMT_BGR24|| (x)==PIX_FMT_BGR565|| (x)==PIX_FMT_BGR555\

  110. 			|| (x)==PIX_FMT_BGR32|| (x)==PIX_FMT_RGB24\

  111. 			|| (x)==PIX_FMT_GRAY8 || (x)==PIX_FMT_YUV410P\

  112. 			|| (x)==PIX_FMT_YUV444P || (x)==PIX_FMT_YUV422P || (x)==PIX_FMT_YUV411P)

  113. #define isSupportedOut(x) ((x)==PIX_FMT_YUV420P || (x)==PIX_FMT_YUYV422 || (x)==PIX_FMT_UYVY422\

  114. 			|| (x)==PIX_FMT_YUV444P || (x)==PIX_FMT_YUV422P || (x)==PIX_FMT_YUV411P\

  115. 			|| isRGB(x) || isBGR(x)\

  116. 			|| (x)==PIX_FMT_NV12 || (x)==PIX_FMT_NV21\

  117. 			|| (x)==PIX_FMT_GRAY8 || (x)==PIX_FMT_YUV410P)

  118. #define isPacked(x)    ((x)==PIX_FMT_YUYV422 || (x)==PIX_FMT_UYVY422 ||isRGB(x) || isBGR(x))

  119. 

  120. #define RGB2YUV_SHIFT 16

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

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

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

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

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

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

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

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

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

  130. 

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

  132. 

  133. /*

  134. NOTES

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

  136. 

  137. TODO

  138. more intelligent missalignment avoidance for the horizontal scaler

  139. write special vertical cubic upscale version

  140. Optimize C code (yv12 / minmax)

  141. add support for packed pixel yuv input & output

  142. add support for Y8 output

  143. optimize bgr24 & bgr32

  144. add BGR4 output support

  145. write special BGR->BGR scaler

  146. */

  147. 

  148. #if defined(ARCH_X86) || defined(ARCH_X86_64)

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

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

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

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

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

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

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

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

  157. 

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

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

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

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

  162. 

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

  164. 	0x0103010301030103LL,

  165. 	0x0200020002000200LL,};

  166. 

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

  168. 	0x0602060206020602LL,

  169. 	0x0004000400040004LL,};

  170. 

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

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

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

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

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

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

  177. 

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

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

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

  181. 

  182. #ifdef FAST_BGR2YV12

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

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

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

  186. #else

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

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

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

  190. #endif /* FAST_BGR2YV12 */

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

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

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

  194. #endif /* defined(ARCH_X86) || defined(ARCH_X86_64) */

  195. 

  196. // clipping helper table for C implementations:

  197. static unsigned char clip_table[768];

  198. 

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

  200. 		  

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

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

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

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

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

  206. 

  207. char *sws_format_name(enum PixelFormat format)

  208. {

  209.     switch (format) {

  210.         case PIX_FMT_YUV420P:

  211.             return "yuv420p";

  212.         case PIX_FMT_YUYV422:

  213.             return "yuyv422";

  214.         case PIX_FMT_RGB24:

  215.             return "rgb24";

  216.         case PIX_FMT_BGR24:

  217.             return "bgr24";

  218.         case PIX_FMT_YUV422P:

  219.             return "yuv422p";

  220.         case PIX_FMT_YUV444P:

  221.             return "yuv444p";

  222.         case PIX_FMT_RGB32:

  223.             return "rgb32";

  224.         case PIX_FMT_YUV410P:

  225.             return "yuv410p";

  226.         case PIX_FMT_YUV411P:

  227.             return "yuv411p";

  228.         case PIX_FMT_RGB565:

  229.             return "rgb565";

  230.         case PIX_FMT_RGB555:

  231.             return "rgb555";

  232.         case PIX_FMT_GRAY8:

  233.             return "gray8";

  234.         case PIX_FMT_MONOWHITE:

  235.             return "mono white";

  236.         case PIX_FMT_MONOBLACK:

  237.             return "mono black";

  238.         case PIX_FMT_PAL8:

  239.             return "Palette";

  240.         case PIX_FMT_YUVJ420P:

  241.             return "yuvj420p";

  242.         case PIX_FMT_YUVJ422P:

  243.             return "yuvj422p";

  244.         case PIX_FMT_YUVJ444P:

  245.             return "yuvj444p";

  246.         case PIX_FMT_XVMC_MPEG2_MC:

  247.             return "xvmc_mpeg2_mc";

  248.         case PIX_FMT_XVMC_MPEG2_IDCT:

  249.             return "xvmc_mpeg2_idct";

  250.         case PIX_FMT_UYVY422:

  251.             return "uyvy422";

  252.         case PIX_FMT_UYYVYY411:

  253.             return "uyyvyy411";

  254.         case PIX_FMT_RGB32_1:

  255.             return "rgb32x";

  256.         case PIX_FMT_BGR32_1:

  257.             return "bgr32x";

  258.         case PIX_FMT_BGR32:

  259.             return "bgr32";

  260.         case PIX_FMT_BGR565:

  261.             return "bgr565";

  262.         case PIX_FMT_BGR555:

  263.             return "bgr555";

  264.         case PIX_FMT_BGR8:

  265.             return "bgr8";

  266.         case PIX_FMT_BGR4:

  267.             return "bgr4";

  268.         case PIX_FMT_BGR4_BYTE:

  269.             return "bgr4 byte";

  270.         case PIX_FMT_RGB8:

  271.             return "rgb8";

  272.         case PIX_FMT_RGB4:

  273.             return "rgb4";

  274.         case PIX_FMT_RGB4_BYTE:

  275.             return "rgb4 byte";

  276.         case PIX_FMT_NV12:

  277.             return "nv12";

  278.         case PIX_FMT_NV21:

  279.             return "nv21";

  280.         default:

  281.             return "Unknown format";

  282.     }

  283. }

  284. 

  285. #if defined(ARCH_X86) || defined(ARCH_X86_64)

  286. void in_asm_used_var_warning_killer()

  287. {

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

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

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

  291.  if(i) i=0;

  292. }

  293. #endif

  294. 

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

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

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

  298. {

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

  300. 	int i;

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

  302. 	{

  303. 		int val=1<<18;

  304. 		int j;

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

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

  307. 

  308. 		dest[i]= FFMIN(FFMAX(val>>19, 0), 255);

  309. 	}

  310. 

  311. 	if(uDest != NULL)

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

  313. 		{

  314. 			int u=1<<18;

  315. 			int v=1<<18;

  316. 			int j;

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

  318. 			{

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

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

  321. 			}

  322. 

  323. 			uDest[i]= FFMIN(FFMAX(u>>19, 0), 255);

  324. 			vDest[i]= FFMIN(FFMAX(v>>19, 0), 255);

  325. 		}

  326. }

  327. 

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

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

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

  331. {

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

  333. 	int i;

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

  335. 	{

  336. 		int val=1<<18;

  337. 		int j;

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

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

  340. 

  341. 		dest[i]= FFMIN(FFMAX(val>>19, 0), 255);

  342. 	}

  343. 

  344. 	if(uDest == NULL)

  345. 		return;

  346. 

  347. 	if(dstFormat == PIX_FMT_NV12)

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

  349. 		{

  350. 			int u=1<<18;

  351. 			int v=1<<18;

  352. 			int j;

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

  354. 			{

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

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

  357. 			}

  358. 

  359. 			uDest[2*i]= FFMIN(FFMAX(u>>19, 0), 255);

  360. 			uDest[2*i+1]= FFMIN(FFMAX(v>>19, 0), 255);

  361. 		}

  362. 	else

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

  364. 		{

  365. 			int u=1<<18;

  366. 			int v=1<<18;

  367. 			int j;

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

  369. 			{

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

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

  372. 			}

  373. 

  374. 			uDest[2*i]= FFMIN(FFMAX(v>>19, 0), 255);

  375. 			uDest[2*i+1]= FFMIN(FFMAX(u>>19, 0), 255);

  376. 		}

  377. }

  378. 

  379. #define YSCALE_YUV_2_PACKEDX_C(type) \

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

  381. 			int j;\

  382. 			int Y1=1<<18;\

  383. 			int Y2=1<<18;\

  384. 			int U=1<<18;\

  385. 			int V=1<<18;\

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

  387. 			const int i2= 2*i;\

  388. 			\

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

  390. 			{\

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

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

  393. 			}\

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

  395. 			{\

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

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

  398. 			}\

  399. 			Y1>>=19;\

  400. 			Y2>>=19;\

  401. 			U >>=19;\

  402. 			V >>=19;\

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

  404. 			{\

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

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

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

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

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

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

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

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

  413. 			}

  414.                         

  415. #define YSCALE_YUV_2_RGBX_C(type) \

  416. 			YSCALE_YUV_2_PACKEDX_C(type)\

  417. 			r = c->table_rV[V];\

  418. 			g = c->table_gU[U] + c->table_gV[V];\

  419. 			b = c->table_bU[U];\

  420. 

  421. #define YSCALE_YUV_2_PACKED2_C \

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

  423. 			const int i2= 2*i;\

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

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

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

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

  428. 

  429. #define YSCALE_YUV_2_RGB2_C(type) \

  430. 			YSCALE_YUV_2_PACKED2_C\

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

  432. 			r = c->table_rV[V];\

  433. 			g = c->table_gU[U] + c->table_gV[V];\

  434. 			b = c->table_bU[U];\

  435. 

  436. #define YSCALE_YUV_2_PACKED1_C \

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

  438. 			const int i2= 2*i;\

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

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

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

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

  443. 

  444. #define YSCALE_YUV_2_RGB1_C(type) \

  445. 			YSCALE_YUV_2_PACKED1_C\

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

  447. 			r = c->table_rV[V];\

  448. 			g = c->table_gU[U] + c->table_gV[V];\

  449. 			b = c->table_bU[U];\

  450. 

  451. #define YSCALE_YUV_2_PACKED1B_C \

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

  453. 			const int i2= 2*i;\

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

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

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

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

  458. 

  459. #define YSCALE_YUV_2_RGB1B_C(type) \

  460. 			YSCALE_YUV_2_PACKED1B_C\

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

  462. 			r = c->table_rV[V];\

  463. 			g = c->table_gU[U] + c->table_gV[V];\

  464. 			b = c->table_bU[U];\

  465. 

  466. #define YSCALE_YUV_2_ANYRGB_C(func, func2)\

  467. 	switch(c->dstFormat)\

  468. 	{\

  469. 	case PIX_FMT_RGB32:\

  470. 	case PIX_FMT_BGR32:\

  471. 		func(uint32_t)\

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

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

  474. 		}		\

  475. 		break;\

  476. 	case PIX_FMT_RGB24:\

  477. 		func(uint8_t)\

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

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

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

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

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

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

  484. 			dest+=6;\

  485. 		}\

  486. 		break;\

  487. 	case PIX_FMT_BGR24:\

  488. 		func(uint8_t)\

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

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

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

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

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

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

  495. 			dest+=6;\

  496. 		}\

  497. 		break;\

  498. 	case PIX_FMT_RGB565:\

  499. 	case PIX_FMT_BGR565:\

  500. 		{\

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

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

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

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

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

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

  507. 			func(uint16_t)\

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

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

  510. 			}\

  511. 		}\

  512. 		break;\

  513. 	case PIX_FMT_RGB555:\

  514. 	case PIX_FMT_BGR555:\

  515. 		{\

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

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

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

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

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

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

  522. 			func(uint16_t)\

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

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

  525. 			}\

  526. 		}\

  527. 		break;\

  528. 	case PIX_FMT_RGB8:\

  529. 	case PIX_FMT_BGR8:\

  530. 		{\

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

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

  533. 			func(uint8_t)\

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

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

  536. 			}\

  537. 		}\

  538. 		break;\

  539. 	case PIX_FMT_RGB4:\

  540. 	case PIX_FMT_BGR4:\

  541. 		{\

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

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

  544. 			func(uint8_t)\

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

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

  547. 			}\

  548. 		}\

  549. 		break;\

  550. 	case PIX_FMT_RGB4_BYTE:\

  551. 	case PIX_FMT_BGR4_BYTE:\

  552. 		{\

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

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

  555. 			func(uint8_t)\

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

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

  558. 			}\

  559. 		}\

  560. 		break;\

  561. 	case PIX_FMT_MONOBLACK:\

  562. 		{\

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

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

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

  566. 				int acc;\

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

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

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

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

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

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

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

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

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

  576. 				dest++;\

  577. 			}\

  578. \

  579. /*\

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

  581. {\

  582. 			int acc=0;\

  583. 			int left=0;\

  584. 			static int top[1024];\

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

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

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

  588. 			int topLeft=0;\

  589. 			int shift=0;\

  590. 			int count=0;\

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

  592. 			int error_new=0;\

  593. 			int error_in3=0;\

  594. 			int f=0;\

  595. 			\

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

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

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

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

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

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

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

  603. \

  604. 				error_new+= ABS(last_new[y][i] - new);\

  605. 				error_in3+= ABS(last_in3[y][i] - in3);\

  606. 				f= error_new - error_in3*4;\

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

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

  609. \

  610. 				topLeft= top[i];\

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

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

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

  614. \

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

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

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

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

  619. 				}\

  620. 			}\

  621. }\

  622. */\

  623. 		}\

  624. 		break;\

  625. 	case PIX_FMT_YUYV422:\

  626. 		func2\

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

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

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

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

  631. 		}		\

  632. 		break;\

  633. 	case PIX_FMT_UYVY422:\

  634. 		func2\

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

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

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

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

  639. 		}		\

  640. 		break;\

  641. 	}\

  642. 

  643. 

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

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

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

  647. {

  648. 	int i;

  649. 	switch(c->dstFormat)

  650. 	{

  651. 	case PIX_FMT_BGR32:

  652. 	case PIX_FMT_RGB32:

  653. 		YSCALE_YUV_2_RGBX_C(uint32_t)

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

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

  656. 		}

  657. 		break;

  658. 	case PIX_FMT_RGB24:

  659. 		YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

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

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

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

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

  666. 			dest+=6;

  667. 		}

  668. 		break;

  669. 	case PIX_FMT_BGR24:

  670. 		YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

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

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

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

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

  677. 			dest+=6;

  678. 		}

  679. 		break;

  680. 	case PIX_FMT_RGB565:

  681. 	case PIX_FMT_BGR565:

  682. 		{

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

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

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

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

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

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

  689. 			YSCALE_YUV_2_RGBX_C(uint16_t)

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

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

  692. 			}

  693. 		}

  694. 		break;

  695. 	case PIX_FMT_RGB555:

  696. 	case PIX_FMT_BGR555:

  697. 		{

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

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

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

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

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

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

  704. 			YSCALE_YUV_2_RGBX_C(uint16_t)

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

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

  707. 			}

  708. 		}

  709. 		break;

  710. 	case PIX_FMT_RGB8:

  711. 	case PIX_FMT_BGR8:

  712. 		{

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

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

  715. 			YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

  718. 			}

  719. 		}

  720. 		break;

  721. 	case PIX_FMT_RGB4:

  722. 	case PIX_FMT_BGR4:

  723. 		{

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

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

  726. 			YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

  729. 			}

  730. 		}

  731. 		break;

  732. 	case PIX_FMT_RGB4_BYTE:

  733. 	case PIX_FMT_BGR4_BYTE:

  734. 		{

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

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

  737. 			YSCALE_YUV_2_RGBX_C(uint8_t)

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

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

  740. 			}

  741. 		}

  742. 		break;

  743. 	case PIX_FMT_MONOBLACK:

  744. 		{

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

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

  747. 			int acc=0;

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

  749. 				int j;

  750. 				int Y1=1<<18;

  751. 				int Y2=1<<18;

  752. 

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

  754. 				{

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

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

  757. 				}

  758. 				Y1>>=19;

  759. 				Y2>>=19;

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

  761. 				{

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

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

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

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

  766. 				}

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

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

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

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

  771. 					dest++;

  772. 				}

  773. 			}

  774. 		}

  775. 		break;

  776. 	case PIX_FMT_YUYV422:

  777. 		YSCALE_YUV_2_PACKEDX_C(void)

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

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

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

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

  782. 		}

  783.                 break;

  784. 	case PIX_FMT_UYVY422:

  785. 		YSCALE_YUV_2_PACKEDX_C(void)

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

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

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

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

  790. 		}

  791.                 break;

  792. 	}

  793. }

  794. 

  795. 

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

  797. //Plain C versions

  798. #if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT)

  799. #define COMPILE_C

  800. #endif

  801. 

  802. #ifdef ARCH_POWERPC

  803. #if defined (HAVE_ALTIVEC) || defined (RUNTIME_CPUDETECT)

  804. #define COMPILE_ALTIVEC

  805. #endif //HAVE_ALTIVEC

  806. #endif //ARCH_POWERPC

  807. 

  808. #if defined(ARCH_X86) || defined(ARCH_X86_64)

  809. 

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

  811. #define COMPILE_MMX

  812. #endif

  813. 

  814. #if defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)

  815. #define COMPILE_MMX2

  816. #endif

  817. 

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

  819. #define COMPILE_3DNOW

  820. #endif

  821. #endif //ARCH_X86 || ARCH_X86_64

  822. 

  823. #undef HAVE_MMX

  824. #undef HAVE_MMX2

  825. #undef HAVE_3DNOW

  826. 

  827. #ifdef COMPILE_C

  828. #undef HAVE_MMX

  829. #undef HAVE_MMX2

  830. #undef HAVE_3DNOW

  831. #undef HAVE_ALTIVEC

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

  833. #include "swscale_template.c"

  834. #endif

  835. 

  836. #ifdef ARCH_POWERPC

  837. #ifdef COMPILE_ALTIVEC

  838. #undef RENAME

  839. #define HAVE_ALTIVEC

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

  841. #include "swscale_template.c"

  842. #endif

  843. #endif //ARCH_POWERPC

  844. 

  845. #if defined(ARCH_X86) || defined(ARCH_X86_64)

  846. 

  847. //X86 versions

  848. /*

  849. #undef RENAME

  850. #undef HAVE_MMX

  851. #undef HAVE_MMX2

  852. #undef HAVE_3DNOW

  853. #define ARCH_X86

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

  855. #include "swscale_template.c"

  856. */

  857. //MMX versions

  858. #ifdef COMPILE_MMX

  859. #undef RENAME

  860. #define HAVE_MMX

  861. #undef HAVE_MMX2

  862. #undef HAVE_3DNOW

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

  864. #include "swscale_template.c"

  865. #endif

  866. 

  867. //MMX2 versions

  868. #ifdef COMPILE_MMX2

  869. #undef RENAME

  870. #define HAVE_MMX

  871. #define HAVE_MMX2

  872. #undef HAVE_3DNOW

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

  874. #include "swscale_template.c"

  875. #endif

  876. 

  877. //3DNOW versions

  878. #ifdef COMPILE_3DNOW

  879. #undef RENAME

  880. #define HAVE_MMX

  881. #undef HAVE_MMX2

  882. #define HAVE_3DNOW

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

  884. #include "swscale_template.c"

  885. #endif

  886. 

  887. #endif //ARCH_X86 || ARCH_X86_64

  888. 

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

  890. 

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

  892. {

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

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

  895. 	else		return getSplineCoeff(	0.0, 

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

  897. 						        c + 3.0*d,

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

  899. 						dist-1.0);

  900. }

  901. 

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

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

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

  905. {

  906. 	int i;

  907. 	int filterSize;

  908. 	int filter2Size;

  909. 	int minFilterSize;

  910. 	double *filter=NULL;

  911. 	double *filter2=NULL;

  912. #if defined(ARCH_X86) || defined(ARCH_X86_64)

  913. 	if(flags & SWS_CPU_CAPS_MMX)

  914. 		asm volatile("emms\n\t"::: "memory"); //FIXME this shouldnt be required but it IS (even for non mmx versions)

  915. #endif

  916. 

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

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

  919. 

  920. 	if(ABS(xInc - 0x10000) <10) // unscaled

  921. 	{

  922. 		int i;

  923. 		filterSize= 1;

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

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

  926. 

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

  928. 		{

  929. 			filter[i*filterSize]=1;

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

  931. 		}

  932. 

  933. 	}

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

  935. 	{

  936. 		int i;

  937. 		int xDstInSrc;

  938. 		filterSize= 1;

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

  940. 		

  941. 		xDstInSrc= xInc/2 - 0x8000;

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

  943. 		{

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

  945. 

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

  947. 			filter[i]= 1.0;

  948. 			xDstInSrc+= xInc;

  949. 		}

  950. 	}

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

  952. 	{

  953. 		int i;

  954. 		int xDstInSrc;

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

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

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

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

  959. 

  960. 		xDstInSrc= xInc/2 - 0x8000;

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

  962. 		{

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

  964. 			int j;

  965. 

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

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

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

  969. 				{

  970. 					double d= ABS((xx<<16) - xDstInSrc)/(double)(1<<16);

  971. 					double coeff= 1.0 - d;

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

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

  974. 					xx++;

  975. 				}

  976. 			xDstInSrc+= xInc;

  977. 		}

  978. 	}

  979. 	else

  980. 	{

  981. 		double xDstInSrc;

  982. 		double sizeFactor, filterSizeInSrc;

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

  984. 

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

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

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

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

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

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

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

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

  993. 		else {

  994. 			sizeFactor= 0.0; //GCC warning killer

  995. 			ASSERT(0)

  996. 		}

  997. 		

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

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

  1000. 

  1001. 		filterSize= (int)ceil(1 + filterSizeInSrc); // will be reduced later if possible

  1002. 		if(filterSize > srcW-2) filterSize=srcW-2;

  1003. 

  1004. 		filter= av_malloc(dstW*sizeof(double)*filterSize);

  1005. 

  1006. 		xDstInSrc= xInc1 / 2.0 - 0.5;

  1007. 		for(i=0; i<dstW; i++)

  1008. 		{

  1009. 			int xx= (int)(xDstInSrc - (filterSize-1)*0.5 + 0.5);

  1010. 			int j;

  1011. 			(*filterPos)[i]= xx;

  1012. 			for(j=0; j<filterSize; j++)

  1013. 			{

  1014. 				double d= ABS(xx - xDstInSrc)/filterSizeInSrc*sizeFactor;

  1015. 				double coeff;

  1016. 				if(flags & SWS_BICUBIC)

  1017. 				{

  1018. 					double B= param[0] != SWS_PARAM_DEFAULT ? param[0] : 0.0;

  1019. 					double C= param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6;

  1020. 

  1021. 					if(d<1.0) 

  1022. 						coeff = (12-9*B-6*C)*d*d*d + (-18+12*B+6*C)*d*d + 6-2*B;

  1023. 					else if(d<2.0)

  1024. 						coeff = (-B-6*C)*d*d*d + (6*B+30*C)*d*d + (-12*B-48*C)*d +8*B+24*C;

  1025. 					else

  1026. 						coeff=0.0;

  1027. 				}

  1028. /*				else if(flags & SWS_X)

  1029. 				{

  1030. 					double p= param ? param*0.01 : 0.3;

  1031. 					coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1032. 					coeff*= pow(2.0, - p*d*d);

  1033. 				}*/

  1034. 				else if(flags & SWS_X)

  1035. 				{

  1036. 					double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1037. 					

  1038. 					if(d<1.0)

  1039. 						coeff = cos(d*PI);

  1040. 					else

  1041. 						coeff=-1.0;

  1042. 					if(coeff<0.0) 	coeff= -pow(-coeff, A);

  1043. 					else		coeff=  pow( coeff, A);

  1044. 					coeff= coeff*0.5 + 0.5;

  1045. 				}

  1046. 				else if(flags & SWS_AREA)

  1047. 				{

  1048. 					double srcPixelSize= 1.0/xInc1;

  1049. 					if(d + srcPixelSize/2 < 0.5) coeff= 1.0;

  1050. 					else if(d - srcPixelSize/2 < 0.5) coeff= (0.5-d)/srcPixelSize + 0.5;

  1051. 					else coeff=0.0;

  1052. 				}

  1053. 				else if(flags & SWS_GAUSS)

  1054. 				{

  1055. 					double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1056. 					coeff = pow(2.0, - p*d*d);

  1057. 				}

  1058. 				else if(flags & SWS_SINC)

  1059. 				{

  1060. 					coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1061. 				}

  1062. 				else if(flags & SWS_LANCZOS)

  1063. 				{

  1064. 					double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0; 

  1065. 					coeff = d ? sin(d*PI)*sin(d*PI/p)/(d*d*PI*PI/p) : 1.0;

  1066. 					if(d>p) coeff=0;

  1067. 				}

  1068. 				else if(flags & SWS_BILINEAR)

  1069. 				{

  1070. 					coeff= 1.0 - d;

  1071. 					if(coeff<0) coeff=0;

  1072. 				}

  1073. 				else if(flags & SWS_SPLINE)

  1074. 				{

  1075. 					double p=-2.196152422706632;

  1076. 					coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, d);

  1077. 				}

  1078. 				else {

  1079. 					coeff= 0.0; //GCC warning killer

  1080. 					ASSERT(0)

  1081. 				}

  1082. 

  1083. 				filter[i*filterSize + j]= coeff;

  1084. 				xx++;

  1085. 			}

  1086. 			xDstInSrc+= xInc1;

  1087. 		}

  1088. 	}

  1089. 

  1090. 	/* apply src & dst Filter to filter -> filter2

  1091. 	   av_free(filter);

  1092. 	*/

  1093. 	ASSERT(filterSize>0)

  1094. 	filter2Size= filterSize;

  1095. 	if(srcFilter) filter2Size+= srcFilter->length - 1;

  1096. 	if(dstFilter) filter2Size+= dstFilter->length - 1;

  1097. 	ASSERT(filter2Size>0)

  1098. 	filter2= av_malloc(filter2Size*dstW*sizeof(double));

  1099. 

  1100. 	for(i=0; i<dstW; i++)

  1101. 	{

  1102. 		int j;

  1103. 		SwsVector scaleFilter;

  1104. 		SwsVector *outVec;

  1105. 

  1106. 		scaleFilter.coeff= filter + i*filterSize;

  1107. 		scaleFilter.length= filterSize;

  1108. 

  1109. 		if(srcFilter) outVec= sws_getConvVec(srcFilter, &scaleFilter);

  1110. 		else	      outVec= &scaleFilter;

  1111. 

  1112. 		ASSERT(outVec->length == filter2Size)

  1113. 		//FIXME dstFilter

  1114. 

  1115. 		for(j=0; j<outVec->length; j++)

  1116. 		{

  1117. 			filter2[i*filter2Size + j]= outVec->coeff[j];

  1118. 		}

  1119. 

  1120. 		(*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1121. 

  1122. 		if(outVec != &scaleFilter) sws_freeVec(outVec);

  1123. 	}

  1124. 	av_free(filter); filter=NULL;

  1125. 

  1126. 	/* try to reduce the filter-size (step1 find size and shift left) */

  1127. 	// Assume its near normalized (*0.5 or *2.0 is ok but * 0.001 is not)

  1128. 	minFilterSize= 0;

  1129. 	for(i=dstW-1; i>=0; i--)

  1130. 	{

  1131. 		int min= filter2Size;

  1132. 		int j;

  1133. 		double cutOff=0.0;

  1134. 

  1135. 		/* get rid off near zero elements on the left by shifting left */

  1136. 		for(j=0; j<filter2Size; j++)

  1137. 		{

  1138. 			int k;

  1139. 			cutOff += ABS(filter2[i*filter2Size]);

  1140. 

  1141. 			if(cutOff > SWS_MAX_REDUCE_CUTOFF) break;

  1142. 

  1143. 			/* preserve Monotonicity because the core can't handle the filter otherwise */

  1144. 			if(i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1145. 

  1146. 			// Move filter coeffs left

  1147. 			for(k=1; k<filter2Size; k++)

  1148. 				filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1149. 			filter2[i*filter2Size + k - 1]= 0.0;

  1150. 			(*filterPos)[i]++;

  1151. 		}

  1152. 

  1153. 		cutOff=0.0;

  1154. 		/* count near zeros on the right */

  1155. 		for(j=filter2Size-1; j>0; j--)

  1156. 		{

  1157. 			cutOff += ABS(filter2[i*filter2Size + j]);

  1158. 

  1159. 			if(cutOff > SWS_MAX_REDUCE_CUTOFF) break;

  1160. 			min--;

  1161. 		}

  1162. 

  1163. 		if(min>minFilterSize) minFilterSize= min;

  1164. 	}

  1165. 

  1166.         if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1167.           // we can handle the special case 4,

  1168.           // so we don't want to go to the full 8

  1169.           if (minFilterSize < 5)

  1170.             filterAlign = 4;

  1171. 

  1172.           // we really don't want to waste our time

  1173.           // doing useless computation, so fall-back on

  1174.           // the scalar C code for very small filter.

  1175.           // vectorizing is worth it only if you have

  1176.           // decent-sized vector.

  1177.           if (minFilterSize < 3)

  1178.             filterAlign = 1;

  1179.         }

  1180. 

  1181.         if (flags & SWS_CPU_CAPS_MMX) {

  1182.                 // special case for unscaled vertical filtering

  1183.                 if(minFilterSize == 1 && filterAlign == 2)

  1184.                         filterAlign= 1;

  1185.         }

  1186. 

  1187. 	ASSERT(minFilterSize > 0)

  1188. 	filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1189. 	ASSERT(filterSize > 0)

  1190. 	filter= av_malloc(filterSize*dstW*sizeof(double));

  1191.         if(filterSize >= MAX_FILTER_SIZE)

  1192.                 return -1;

  1193. 	*outFilterSize= filterSize;

  1194. 

  1195. 	if(flags&SWS_PRINT_INFO)

  1196. 		MSG_V("SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1197. 	/* try to reduce the filter-size (step2 reduce it) */

  1198. 	for(i=0; i<dstW; i++)

  1199. 	{

  1200. 		int j;

  1201. 

  1202. 		for(j=0; j<filterSize; j++)

  1203. 		{

  1204. 			if(j>=filter2Size) filter[i*filterSize + j]= 0.0;

  1205. 			else		   filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1206. 		}

  1207. 	}

  1208. 	av_free(filter2); filter2=NULL;

  1209. 	

  1210. 

  1211. 	//FIXME try to align filterpos if possible

  1212. 

  1213. 	//fix borders

  1214. 	for(i=0; i<dstW; i++)

  1215. 	{

  1216. 		int j;

  1217. 		if((*filterPos)[i] < 0)

  1218. 		{

  1219. 			// Move filter coeffs left to compensate for filterPos

  1220. 			for(j=1; j<filterSize; j++)

  1221. 			{

  1222. 				int left= FFMAX(j + (*filterPos)[i], 0);

  1223. 				filter[i*filterSize + left] += filter[i*filterSize + j];

  1224. 				filter[i*filterSize + j]=0;

  1225. 			}

  1226. 			(*filterPos)[i]= 0;

  1227. 		}

  1228. 

  1229. 		if((*filterPos)[i] + filterSize > srcW)

  1230. 		{

  1231. 			int shift= (*filterPos)[i] + filterSize - srcW;

  1232. 			// Move filter coeffs right to compensate for filterPos

  1233. 			for(j=filterSize-2; j>=0; j--)

  1234. 			{

  1235. 				int right= FFMIN(j + shift, filterSize-1);

  1236. 				filter[i*filterSize +right] += filter[i*filterSize +j];

  1237. 				filter[i*filterSize +j]=0;

  1238. 			}

  1239. 			(*filterPos)[i]= srcW - filterSize;

  1240. 		}

  1241. 	}

  1242. 

  1243. 	// Note the +1 is for the MMXscaler which reads over the end

  1244. 	/* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1245. 	*outFilter= av_malloc(*outFilterSize*(dstW+1)*sizeof(int16_t));

  1246. 	memset(*outFilter, 0, *outFilterSize*(dstW+1)*sizeof(int16_t));

  1247. 

  1248. 	/* Normalize & Store in outFilter */

  1249. 	for(i=0; i<dstW; i++)

  1250. 	{

  1251. 		int j;

  1252. 		double error=0;

  1253. 		double sum=0;

  1254. 		double scale= one;

  1255. 

  1256. 		for(j=0; j<filterSize; j++)

  1257. 		{

  1258. 			sum+= filter[i*filterSize + j];

  1259. 		}

  1260. 		scale/= sum;

  1261. 		for(j=0; j<*outFilterSize; j++)

  1262. 		{

  1263. 			double v= filter[i*filterSize + j]*scale + error;

  1264. 			int intV= floor(v + 0.5);

  1265. 			(*outFilter)[i*(*outFilterSize) + j]= intV;

  1266. 			error = v - intV;

  1267. 		}

  1268. 	}

  1269. 	

  1270. 	(*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1271. 	for(i=0; i<*outFilterSize; i++)

  1272. 	{

  1273. 		int j= dstW*(*outFilterSize);

  1274. 		(*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1275. 	}

  1276. 

  1277. 	av_free(filter);

  1278.         return 0;

  1279. }

  1280. 

  1281. #ifdef COMPILE_MMX2

  1282. static void initMMX2HScaler(int dstW, int xInc, uint8_t *funnyCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1283. {

  1284. 	uint8_t *fragmentA;

  1285. 	long imm8OfPShufW1A;

  1286. 	long imm8OfPShufW2A;

  1287. 	long fragmentLengthA;

  1288. 	uint8_t *fragmentB;

  1289. 	long imm8OfPShufW1B;

  1290. 	long imm8OfPShufW2B;

  1291. 	long fragmentLengthB;

  1292. 	int fragmentPos;

  1293. 

  1294. 	int xpos, i;

  1295. 

  1296. 	// create an optimized horizontal scaling routine

  1297. 

  1298. 	//code fragment

  1299. 

  1300. 	asm volatile(

  1301. 		"jmp 9f				\n\t"

  1302. 	// Begin

  1303. 		"0:				\n\t"

  1304. 		"movq (%%"REG_d", %%"REG_a"), %%mm3\n\t" 

  1305. 		"movd (%%"REG_c", %%"REG_S"), %%mm0\n\t" 

  1306. 		"movd 1(%%"REG_c", %%"REG_S"), %%mm1\n\t"

  1307. 		"punpcklbw %%mm7, %%mm1		\n\t"

  1308. 		"punpcklbw %%mm7, %%mm0		\n\t"

  1309. 		"pshufw $0xFF, %%mm1, %%mm1	\n\t"

  1310. 		"1:				\n\t"

  1311. 		"pshufw $0xFF, %%mm0, %%mm0	\n\t"

  1312. 		"2:				\n\t"

  1313. 		"psubw %%mm1, %%mm0		\n\t"

  1314. 		"movl 8(%%"REG_b", %%"REG_a"), %%esi\n\t"

  1315. 		"pmullw %%mm3, %%mm0		\n\t"

  1316. 		"psllw $7, %%mm1		\n\t"

  1317. 		"paddw %%mm1, %%mm0		\n\t"

  1318. 

  1319. 		"movq %%mm0, (%%"REG_D", %%"REG_a")\n\t"

  1320. 

  1321. 		"add $8, %%"REG_a"		\n\t"

  1322. 	// End

  1323. 		"9:				\n\t"

  1324. //		"int $3\n\t"

  1325. 		"lea 0b, %0			\n\t"

  1326. 		"lea 1b, %1			\n\t"

  1327. 		"lea 2b, %2			\n\t"

  1328. 		"dec %1				\n\t"

  1329. 		"dec %2				\n\t"

  1330. 		"sub %0, %1			\n\t"

  1331. 		"sub %0, %2			\n\t"

  1332. 		"lea 9b, %3			\n\t"

  1333. 		"sub %0, %3			\n\t"

  1334. 

  1335. 

  1336. 		:"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1337. 		"=r" (fragmentLengthA)

  1338. 	);

  1339. 

  1340. 	asm volatile(

  1341. 		"jmp 9f				\n\t"

  1342. 	// Begin

  1343. 		"0:				\n\t"

  1344. 		"movq (%%"REG_d", %%"REG_a"), %%mm3\n\t" 

  1345. 		"movd (%%"REG_c", %%"REG_S"), %%mm0\n\t" 

  1346. 		"punpcklbw %%mm7, %%mm0		\n\t"

  1347. 		"pshufw $0xFF, %%mm0, %%mm1	\n\t"

  1348. 		"1:				\n\t"

  1349. 		"pshufw $0xFF, %%mm0, %%mm0	\n\t"

  1350. 		"2:				\n\t"

  1351. 		"psubw %%mm1, %%mm0		\n\t"

  1352. 		"movl 8(%%"REG_b", %%"REG_a"), %%esi\n\t"

  1353. 		"pmullw %%mm3, %%mm0		\n\t"

  1354. 		"psllw $7, %%mm1		\n\t"

  1355. 		"paddw %%mm1, %%mm0		\n\t"

  1356. 

  1357. 		"movq %%mm0, (%%"REG_D", %%"REG_a")\n\t"

  1358. 

  1359. 		"add $8, %%"REG_a"		\n\t"

  1360. 	// End

  1361. 		"9:				\n\t"

  1362. //		"int $3\n\t"

  1363. 		"lea 0b, %0			\n\t"

  1364. 		"lea 1b, %1			\n\t"

  1365. 		"lea 2b, %2			\n\t"

  1366. 		"dec %1				\n\t"

  1367. 		"dec %2				\n\t"

  1368. 		"sub %0, %1			\n\t"

  1369. 		"sub %0, %2			\n\t"

  1370. 		"lea 9b, %3			\n\t"

  1371. 		"sub %0, %3			\n\t"

  1372. 

  1373. 

  1374. 		:"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1375. 		"=r" (fragmentLengthB)

  1376. 	);

  1377. 

  1378. 	xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1379. 	fragmentPos=0;

  1380. 	

  1381. 	for(i=0; i<dstW/numSplits; i++)

  1382. 	{

  1383. 		int xx=xpos>>16;

  1384. 

  1385. 		if((i&3) == 0)

  1386. 		{

  1387. 			int a=0;

  1388. 			int b=((xpos+xInc)>>16) - xx;

  1389. 			int c=((xpos+xInc*2)>>16) - xx;

  1390. 			int d=((xpos+xInc*3)>>16) - xx;

  1391. 

  1392. 			filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;

  1393. 			filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1394. 			filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1395. 			filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1396. 			filterPos[i/2]= xx;

  1397. 

  1398. 			if(d+1<4)

  1399. 			{

  1400. 				int maxShift= 3-(d+1);

  1401. 				int shift=0;

  1402. 

  1403. 				memcpy(funnyCode + fragmentPos, fragmentB, fragmentLengthB);

  1404. 

  1405. 				funnyCode[fragmentPos + imm8OfPShufW1B]=

  1406. 					(a+1) | ((b+1)<<2) | ((c+1)<<4) | ((d+1)<<6);

  1407. 				funnyCode[fragmentPos + imm8OfPShufW2B]=

  1408. 					a | (b<<2) | (c<<4) | (d<<6);

  1409. 

  1410. 				if(i+3>=dstW) shift=maxShift; //avoid overread

  1411. 				else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1412. 

  1413. 				if(shift && i>=shift)

  1414. 				{

  1415. 					funnyCode[fragmentPos + imm8OfPShufW1B]+= 0x55*shift;

  1416. 					funnyCode[fragmentPos + imm8OfPShufW2B]+= 0x55*shift;

  1417. 					filterPos[i/2]-=shift;

  1418. 				}

  1419. 

  1420. 				fragmentPos+= fragmentLengthB;

  1421. 			}

  1422. 			else

  1423. 			{

  1424. 				int maxShift= 3-d;

  1425. 				int shift=0;

  1426. 

  1427. 				memcpy(funnyCode + fragmentPos, fragmentA, fragmentLengthA);

  1428. 

  1429. 				funnyCode[fragmentPos + imm8OfPShufW1A]=

  1430. 				funnyCode[fragmentPos + imm8OfPShufW2A]=

  1431. 					a | (b<<2) | (c<<4) | (d<<6);

  1432. 

  1433. 				if(i+4>=dstW) shift=maxShift; //avoid overread

  1434. 				else if((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //partial align

  1435. 

  1436. 				if(shift && i>=shift)

  1437. 				{

  1438. 					funnyCode[fragmentPos + imm8OfPShufW1A]+= 0x55*shift;

  1439. 					funnyCode[fragmentPos + imm8OfPShufW2A]+= 0x55*shift;

  1440. 					filterPos[i/2]-=shift;

  1441. 				}

  1442. 

  1443. 				fragmentPos+= fragmentLengthA;

  1444. 			}

  1445. 

  1446. 			funnyCode[fragmentPos]= RET;

  1447. 		}

  1448. 		xpos+=xInc;

  1449. 	}

  1450. 	filterPos[i/2]= xpos>>16; // needed to jump to the next part

  1451. }

  1452. #endif /* COMPILE_MMX2 */

  1453. 

  1454. static void globalInit(void){

  1455.     // generating tables:

  1456.     int i;

  1457.     for(i=0; i<768; i++){

  1458. 	int c= FFMIN(FFMAX(i-256, 0), 255);

  1459. 	clip_table[i]=c;

  1460.     }

  1461. }

  1462. 

  1463. static SwsFunc getSwsFunc(int flags){

  1464.     

  1465. #ifdef RUNTIME_CPUDETECT

  1466. #if defined(ARCH_X86) || defined(ARCH_X86_64)

  1467. 	// ordered per speed fasterst first

  1468. 	if(flags & SWS_CPU_CAPS_MMX2)

  1469. 		return swScale_MMX2;

  1470. 	else if(flags & SWS_CPU_CAPS_3DNOW)

  1471. 		return swScale_3DNow;

  1472. 	else if(flags & SWS_CPU_CAPS_MMX)

  1473. 		return swScale_MMX;

  1474. 	else

  1475. 		return swScale_C;

  1476. 

  1477. #else

  1478. #ifdef ARCH_POWERPC

  1479. 	if(flags & SWS_CPU_CAPS_ALTIVEC)

  1480. 	  return swScale_altivec;

  1481. 	else

  1482. 	  return swScale_C;

  1483. #endif

  1484. 	return swScale_C;

  1485. #endif /* defined(ARCH_X86) || defined(ARCH_X86_64) */

  1486. #else //RUNTIME_CPUDETECT

  1487. #ifdef HAVE_MMX2

  1488. 	return swScale_MMX2;

  1489. #elif defined (HAVE_3DNOW)

  1490. 	return swScale_3DNow;

  1491. #elif defined (HAVE_MMX)

  1492. 	return swScale_MMX;

  1493. #elif defined (HAVE_ALTIVEC)

  1494. 	return swScale_altivec;

  1495. #else

  1496. 	return swScale_C;

  1497. #endif

  1498. #endif //!RUNTIME_CPUDETECT

  1499. }

  1500. 

  1501. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1502.              int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1503. 	uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1504. 	/* Copy Y plane */

  1505. 	if(dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1506. 		memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1507. 	else

  1508. 	{

  1509. 		int i;

  1510. 		uint8_t *srcPtr= src[0];

  1511. 		uint8_t *dstPtr= dst;

  1512. 		for(i=0; i<srcSliceH; i++)

  1513. 		{

  1514. 			memcpy(dstPtr, srcPtr, c->srcW);

  1515. 			srcPtr+= srcStride[0];

  1516. 			dstPtr+= dstStride[0];

  1517. 		}

  1518. 	}

  1519. 	dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1520. 	if (c->dstFormat == PIX_FMT_NV12)

  1521. 		interleaveBytes( src[1],src[2],dst,c->srcW/2,srcSliceH/2,srcStride[1],srcStride[2],dstStride[0] );

  1522. 	else

  1523. 		interleaveBytes( src[2],src[1],dst,c->srcW/2,srcSliceH/2,srcStride[2],srcStride[1],dstStride[0] );

  1524. 

  1525. 	return srcSliceH;

  1526. }

  1527. 

  1528. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1529.              int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1530. 	uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1531. 

  1532. 	yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );

  1533. 

  1534. 	return srcSliceH;

  1535. }

  1536. 

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

  1538.              int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  1539. 	uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1540. 

  1541. 	yv12touyvy( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] );

  1542. 

  1543. 	return srcSliceH;

  1544. }

  1545. 

  1546. /* {RGB,BGR}{15,16,24,32} -> {RGB,BGR}{15,16,24,32} */

  1547. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1548. 			   int srcSliceH, uint8_t* dst[], int dstStride[]){

  1549. 	const int srcFormat= c->srcFormat;

  1550. 	const int dstFormat= c->dstFormat;

  1551. 	const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  1552. 	const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  1553. 	const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1554. 	const int dstId= fmt_depth(dstFormat) >> 2;

  1555. 	void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1556. 

  1557. 	/* BGR -> BGR */

  1558. 	if(   (isBGR(srcFormat) && isBGR(dstFormat))

  1559. 	   || (isRGB(srcFormat) && isRGB(dstFormat))){

  1560. 		switch(srcId | (dstId<<4)){

  1561. 		case 0x34: conv= rgb16to15; break;

  1562. 		case 0x36: conv= rgb24to15; break;

  1563. 		case 0x38: conv= rgb32to15; break;

  1564. 		case 0x43: conv= rgb15to16; break;

  1565. 		case 0x46: conv= rgb24to16; break;

  1566. 		case 0x48: conv= rgb32to16; break;

  1567. 		case 0x63: conv= rgb15to24; break;

  1568. 		case 0x64: conv= rgb16to24; break;

  1569. 		case 0x68: conv= rgb32to24; break;

  1570. 		case 0x83: conv= rgb15to32; break;

  1571. 		case 0x84: conv= rgb16to32; break;

  1572. 		case 0x86: conv= rgb24to32; break;

  1573. 		default: MSG_ERR("swScaler: internal error %s -> %s converter\n", 

  1574. 				 sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1575. 		}

  1576. 	}else if(   (isBGR(srcFormat) && isRGB(dstFormat))

  1577. 		 || (isRGB(srcFormat) && isBGR(dstFormat))){

  1578. 		switch(srcId | (dstId<<4)){

  1579. 		case 0x33: conv= rgb15tobgr15; break;

  1580. 		case 0x34: conv= rgb16tobgr15; break;

  1581. 		case 0x36: conv= rgb24tobgr15; break;

  1582. 		case 0x38: conv= rgb32tobgr15; break;

  1583. 		case 0x43: conv= rgb15tobgr16; break;

  1584. 		case 0x44: conv= rgb16tobgr16; break;

  1585. 		case 0x46: conv= rgb24tobgr16; break;

  1586. 		case 0x48: conv= rgb32tobgr16; break;

  1587. 		case 0x63: conv= rgb15tobgr24; break;

  1588. 		case 0x64: conv= rgb16tobgr24; break;

  1589. 		case 0x66: conv= rgb24tobgr24; break;

  1590. 		case 0x68: conv= rgb32tobgr24; break;

  1591. 		case 0x83: conv= rgb15tobgr32; break;

  1592. 		case 0x84: conv= rgb16tobgr32; break;

  1593. 		case 0x86: conv= rgb24tobgr32; break;

  1594. 		case 0x88: conv= rgb32tobgr32; break;

  1595. 		default: MSG_ERR("swScaler: internal error %s -> %s converter\n", 

  1596. 				 sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  1597. 		}

  1598. 	}else{

  1599. 		MSG_ERR("swScaler: internal error %s -> %s converter\n", 

  1600. 			 sws_format_name(srcFormat), sws_format_name(dstFormat));

  1601. 	}

  1602. 

  1603. 	if(dstStride[0]*srcBpp == srcStride[0]*dstBpp)

  1604. 		conv(src[0], dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1605. 	else

  1606. 	{

  1607. 		int i;

  1608. 		uint8_t *srcPtr= src[0];

  1609. 		uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1610. 

  1611. 		for(i=0; i<srcSliceH; i++)

  1612. 		{

  1613. 			conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1614. 			srcPtr+= srcStride[0];

  1615. 			dstPtr+= dstStride[0];

  1616. 		}

  1617. 	}     

  1618. 	return srcSliceH;

  1619. }

  1620. 

  1621. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1622.              int srcSliceH, uint8_t* dst[], int dstStride[]){

  1623. 

  1624. 	rgb24toyv12(

  1625. 		src[0], 

  1626. 		dst[0]+ srcSliceY    *dstStride[0], 

  1627. 		dst[1]+(srcSliceY>>1)*dstStride[1], 

  1628. 		dst[2]+(srcSliceY>>1)*dstStride[2],

  1629. 		c->srcW, srcSliceH, 

  1630. 		dstStride[0], dstStride[1], srcStride[0]);

  1631. 	return srcSliceH;

  1632. }

  1633. 

  1634. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1635.              int srcSliceH, uint8_t* dst[], int dstStride[]){

  1636. 	int i;

  1637. 

  1638. 	/* copy Y */

  1639. 	if(srcStride[0]==dstStride[0] && srcStride[0] > 0) 

  1640. 		memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  1641. 	else{

  1642. 		uint8_t *srcPtr= src[0];

  1643. 		uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1644. 

  1645. 		for(i=0; i<srcSliceH; i++)

  1646. 		{

  1647. 			memcpy(dstPtr, srcPtr, c->srcW);

  1648. 			srcPtr+= srcStride[0];

  1649. 			dstPtr+= dstStride[0];

  1650. 		}

  1651. 	}

  1652. 

  1653. 	if(c->dstFormat==PIX_FMT_YUV420P){

  1654. 		planar2x(src[1], dst[1], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[1]);

  1655. 		planar2x(src[2], dst[2], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[2]);

  1656. 	}else{

  1657. 		planar2x(src[1], dst[2], c->chrSrcW, c->chrSrcH, srcStride[1], dstStride[2]);

  1658. 		planar2x(src[2], dst[1], c->chrSrcW, c->chrSrcH, srcStride[2], dstStride[1]);

  1659. 	}

  1660. 	return srcSliceH;

  1661. }

  1662. 

  1663. /* unscaled copy like stuff (assumes nearly identical formats) */

  1664. static int simpleCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1665.              int srcSliceH, uint8_t* dst[], int dstStride[]){

  1666. 

  1667. 	if(isPacked(c->srcFormat))

  1668. 	{

  1669. 		if(dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1670. 			memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1671. 		else

  1672. 		{

  1673. 			int i;

  1674. 			uint8_t *srcPtr= src[0];

  1675. 			uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1676. 			int length=0;

  1677. 

  1678. 			/* universal length finder */

  1679. 			while(length+c->srcW <= ABS(dstStride[0]) 

  1680. 			   && length+c->srcW <= ABS(srcStride[0])) length+= c->srcW;

  1681. 			ASSERT(length!=0);

  1682. 

  1683. 			for(i=0; i<srcSliceH; i++)

  1684. 			{

  1685. 				memcpy(dstPtr, srcPtr, length);

  1686. 				srcPtr+= srcStride[0];

  1687. 				dstPtr+= dstStride[0];

  1688. 			}

  1689. 		}

  1690. 	}

  1691. 	else 

  1692. 	{ /* Planar YUV or gray */

  1693. 		int plane;

  1694. 		for(plane=0; plane<3; plane++)

  1695. 		{

  1696. 			int length= plane==0 ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1697. 			int y=      plane==0 ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1698. 			int height= plane==0 ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1699. 

  1700. 			if((isGray(c->srcFormat) || isGray(c->dstFormat)) && plane>0)

  1701. 			{

  1702. 				if(!isGray(c->dstFormat))

  1703. 					memset(dst[plane], 128, dstStride[plane]*height);

  1704. 			}

  1705. 			else

  1706. 			{

  1707. 				if(dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  1708. 					memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  1709. 				else

  1710. 				{

  1711. 					int i;

  1712. 					uint8_t *srcPtr= src[plane];

  1713. 					uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  1714. 					for(i=0; i<height; i++)

  1715. 					{

  1716. 						memcpy(dstPtr, srcPtr, length);

  1717. 						srcPtr+= srcStride[plane];

  1718. 						dstPtr+= dstStride[plane];

  1719. 					}

  1720. 				}

  1721. 			}

  1722. 		}

  1723. 	}

  1724. 	return srcSliceH;

  1725. }

  1726. 

  1727. static void getSubSampleFactors(int *h, int *v, int format){

  1728. 	switch(format){

  1729. 	case PIX_FMT_UYVY422:

  1730. 	case PIX_FMT_YUYV422:

  1731. 		*h=1;

  1732. 		*v=0;

  1733. 		break;

  1734. 	case PIX_FMT_YUV420P:

  1735. 	case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  1736. 	case PIX_FMT_NV12:

  1737. 	case PIX_FMT_NV21:

  1738. 		*h=1;

  1739. 		*v=1;

  1740. 		break;

  1741. 	case PIX_FMT_YUV410P:

  1742. 		*h=2;

  1743. 		*v=2;

  1744. 		break;

  1745. 	case PIX_FMT_YUV444P:

  1746. 		*h=0;

  1747. 		*v=0;

  1748. 		break;

  1749. 	case PIX_FMT_YUV422P:

  1750. 		*h=1;

  1751. 		*v=0;

  1752. 		break;

  1753. 	case PIX_FMT_YUV411P:

  1754. 		*h=2;

  1755. 		*v=0;

  1756. 		break;

  1757. 	default:

  1758. 		*h=0;

  1759. 		*v=0;

  1760. 		break;

  1761. 	}

  1762. }

  1763. 

  1764. static uint16_t roundToInt16(int64_t f){

  1765. 	int r= (f + (1<<15))>>16;

  1766. 	     if(r<-0x7FFF) return 0x8000;

  1767. 	else if(r> 0x7FFF) return 0x7FFF;

  1768. 	else               return r;

  1769. }

  1770. 

  1771. /**

  1772.  * @param inv_table the yuv2rgb coeffs, normally Inverse_Table_6_9[x]

  1773.  * @param fullRange if 1 then the luma range is 0..255 if 0 its 16..235

  1774.  * @return -1 if not supported

  1775.  */

  1776. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation){

  1777. 	int64_t crv =  inv_table[0];

  1778. 	int64_t cbu =  inv_table[1];

  1779. 	int64_t cgu = -inv_table[2];

  1780. 	int64_t cgv = -inv_table[3];

  1781. 	int64_t cy  = 1<<16;

  1782. 	int64_t oy  = 0;

  1783. 

  1784. 	if(isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  1785. 	memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  1786. 	memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  1787. 

  1788. 	c->brightness= brightness;

  1789. 	c->contrast  = contrast;

  1790. 	c->saturation= saturation;

  1791. 	c->srcRange  = srcRange;

  1792. 	c->dstRange  = dstRange;

  1793. 

  1794. 	c->uOffset=   0x0400040004000400LL;

  1795. 	c->vOffset=   0x0400040004000400LL;

  1796. 

  1797. 	if(!srcRange){

  1798. 		cy= (cy*255) / 219;

  1799. 		oy= 16<<16;

  1800. 	}

  1801. 

  1802. 	cy = (cy *contrast             )>>16;

  1803. 	crv= (crv*contrast * saturation)>>32;

  1804. 	cbu= (cbu*contrast * saturation)>>32;

  1805. 	cgu= (cgu*contrast * saturation)>>32;

  1806. 	cgv= (cgv*contrast * saturation)>>32;

  1807. 

  1808. 	oy -= 256*brightness;

  1809. 

  1810. 	c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  1811. 	c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  1812. 	c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  1813. 	c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  1814. 	c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  1815. 	c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  1816. 

  1817. 	yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  1818. 	//FIXME factorize

  1819. 

  1820. #ifdef COMPILE_ALTIVEC

  1821. 	if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  1822. 	    yuv2rgb_altivec_init_tables (c, inv_table, brightness, contrast, saturation);

  1823. #endif	

  1824. 	return 0;

  1825. }

  1826. 

  1827. /**

  1828.  * @return -1 if not supported

  1829.  */

  1830. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation){

  1831. 	if(isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  1832. 

  1833. 	*inv_table = c->srcColorspaceTable;

  1834. 	*table     = c->dstColorspaceTable;

  1835. 	*srcRange  = c->srcRange;

  1836. 	*dstRange  = c->dstRange;

  1837. 	*brightness= c->brightness;

  1838. 	*contrast  = c->contrast;

  1839. 	*saturation= c->saturation;

  1840. 	

  1841. 	return 0;	

  1842. }

  1843. 

  1844. SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags,

  1845.                          SwsFilter *srcFilter, SwsFilter *dstFilter, double *param){

  1846. 

  1847. 	SwsContext *c;

  1848. 	int i;

  1849. 	int usesVFilter, usesHFilter;

  1850. 	int unscaled, needsDither;

  1851. 	SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  1852. #if defined(ARCH_X86) || defined(ARCH_X86_64)

  1853. 	if(flags & SWS_CPU_CAPS_MMX)

  1854. 		asm volatile("emms\n\t"::: "memory");

  1855. #endif

  1856. 

  1857. #ifndef RUNTIME_CPUDETECT //ensure that the flags match the compiled variant if cpudetect is off

  1858. 	flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC);

  1859. #ifdef HAVE_MMX2

  1860. 	flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  1861. #elif defined (HAVE_3DNOW)

  1862. 	flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  1863. #elif defined (HAVE_MMX)

  1864. 	flags |= SWS_CPU_CAPS_MMX;

  1865. #elif defined (HAVE_ALTIVEC)

  1866. 	flags |= SWS_CPU_CAPS_ALTIVEC;

  1867. #endif

  1868. #endif /* RUNTIME_CPUDETECT */

  1869. 	if(clip_table[512] != 255) globalInit();

  1870. 	if(rgb15to16 == NULL) sws_rgb2rgb_init(flags);

  1871. 

  1872. 	unscaled = (srcW == dstW && srcH == dstH);

  1873. 	needsDither= (isBGR(dstFormat) || isRGB(dstFormat)) 

  1874. 		     && (fmt_depth(dstFormat))<24

  1875. 		     && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  1876. 

  1877. 	if(!isSupportedIn(srcFormat)) 

  1878. 	{

  1879. 		MSG_ERR("swScaler: %s is not supported as input format\n", sws_format_name(srcFormat));

  1880. 		return NULL;

  1881. 	}

  1882. 	if(!isSupportedOut(dstFormat))

  1883. 	{

  1884. 		MSG_ERR("swScaler: %s is not supported as output format\n", sws_format_name(dstFormat));

  1885. 		return NULL;

  1886. 	}

  1887. 

  1888. 	/* sanity check */

  1889. 	if(srcW<4 || srcH<1 || dstW<8 || dstH<1) //FIXME check if these are enough and try to lowwer them after fixing the relevant parts of the code

  1890. 	{

  1891. 		 MSG_ERR("swScaler: %dx%d -> %dx%d is invalid scaling dimension\n", 

  1892. 			srcW, srcH, dstW, dstH);

  1893. 		return NULL;

  1894. 	}

  1895. 

  1896. 	if(!dstFilter) dstFilter= &dummyFilter;

  1897. 	if(!srcFilter) srcFilter= &dummyFilter;

  1898. 

  1899. 	c= av_malloc(sizeof(SwsContext));

  1900. 	memset(c, 0, sizeof(SwsContext));

  1901. 

  1902. 	c->srcW= srcW;

  1903. 	c->srcH= srcH;

  1904. 	c->dstW= dstW;

  1905. 	c->dstH= dstH;

  1906. 	c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  1907. 	c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  1908. 	c->flags= flags;

  1909. 	c->dstFormat= dstFormat;

  1910. 	c->srcFormat= srcFormat;

  1911.         c->vRounder= 4* 0x0001000100010001ULL;

  1912. 

  1913. 	usesHFilter= usesVFilter= 0;

  1914. 	if(dstFilter->lumV!=NULL && dstFilter->lumV->length>1) usesVFilter=1;

  1915. 	if(dstFilter->lumH!=NULL && dstFilter->lumH->length>1) usesHFilter=1;

  1916. 	if(dstFilter->chrV!=NULL && dstFilter->chrV->length>1) usesVFilter=1;

  1917. 	if(dstFilter->chrH!=NULL && dstFilter->chrH->length>1) usesHFilter=1;

  1918. 	if(srcFilter->lumV!=NULL && srcFilter->lumV->length>1) usesVFilter=1;

  1919. 	if(srcFilter->lumH!=NULL && srcFilter->lumH->length>1) usesHFilter=1;

  1920. 	if(srcFilter->chrV!=NULL && srcFilter->chrV->length>1) usesVFilter=1;

  1921. 	if(srcFilter->chrH!=NULL && srcFilter->chrH->length>1) usesHFilter=1;

  1922. 

  1923. 	getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  1924. 	getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  1925. 

  1926. 	// reuse chroma for 2 pixles rgb/bgr unless user wants full chroma interpolation

  1927. 	if((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  1928. 

  1929. 	// drop some chroma lines if the user wants it

  1930. 	c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  1931. 	c->chrSrcVSubSample+= c->vChrDrop;

  1932. 

  1933. 	// drop every 2. pixel for chroma calculation unless user wants full chroma

  1934. 	if((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)) 

  1935. 		c->chrSrcHSubSample=1;

  1936. 

  1937. 	if(param){

  1938. 		c->param[0] = param[0];

  1939. 		c->param[1] = param[1];

  1940. 	}else{

  1941. 		c->param[0] =

  1942. 		c->param[1] = SWS_PARAM_DEFAULT;

  1943. 	}

  1944. 

  1945. 	c->chrIntHSubSample= c->chrDstHSubSample;

  1946. 	c->chrIntVSubSample= c->chrSrcVSubSample;

  1947. 

  1948. 	// note the -((-x)>>y) is so that we allways round toward +inf

  1949. 	c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  1950. 	c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  1951. 	c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  1952. 	c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  1953. 

  1954. 	sws_setColorspaceDetails(c, Inverse_Table_6_9[SWS_CS_DEFAULT], 0, Inverse_Table_6_9[SWS_CS_DEFAULT] /* FIXME*/, 0, 0, 1<<16, 1<<16); 

  1955. 

  1956. 	/* unscaled special Cases */

  1957. 	if(unscaled && !usesHFilter && !usesVFilter)

  1958. 	{

  1959. 		/* yv12_to_nv12 */

  1960. 		if(srcFormat == PIX_FMT_YUV420P && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21))

  1961. 		{

  1962. 			c->swScale= PlanarToNV12Wrapper;

  1963. 		}

  1964. 		/* yuv2bgr */

  1965. 		if((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P) && (isBGR(dstFormat) || isRGB(dstFormat)))

  1966. 		{

  1967. 			c->swScale= yuv2rgb_get_func_ptr(c);

  1968. 		}

  1969. 		

  1970. 		if( srcFormat==PIX_FMT_YUV410P && dstFormat==PIX_FMT_YUV420P )

  1971. 		{

  1972. 			c->swScale= yvu9toyv12Wrapper;

  1973. 		}

  1974. 

  1975. 		/* bgr24toYV12 */

  1976. 		if(srcFormat==PIX_FMT_BGR24 && dstFormat==PIX_FMT_YUV420P)

  1977. 			c->swScale= bgr24toyv12Wrapper;

  1978. 		

  1979. 		/* rgb/bgr -> rgb/bgr (no dither needed forms) */

  1980. 		if(   (isBGR(srcFormat) || isRGB(srcFormat))

  1981. 		   && (isBGR(dstFormat) || isRGB(dstFormat)) 

  1982. 		   && !needsDither)

  1983. 			c->swScale= rgb2rgbWrapper;

  1984. 

  1985. 		/* LQ converters if -sws 0 or -sws 4*/

  1986. 		if(c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){

  1987. 			/* rgb/bgr -> rgb/bgr (dither needed forms) */

  1988. 			if(  (isBGR(srcFormat) || isRGB(srcFormat))

  1989. 			  && (isBGR(dstFormat) || isRGB(dstFormat)) 

  1990. 			  && needsDither)

  1991. 				c->swScale= rgb2rgbWrapper;

  1992. 

  1993. 			/* yv12_to_yuy2 */

  1994. 			if(srcFormat == PIX_FMT_YUV420P && 

  1995. 			    (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422))

  1996. 			{

  1997. 				if (dstFormat == PIX_FMT_YUYV422)

  1998. 				    c->swScale= PlanarToYuy2Wrapper;

  1999. 				else

  2000. 				    c->swScale= PlanarToUyvyWrapper;

  2001. 			}

  2002. 		}

  2003. 

  2004. #ifdef COMPILE_ALTIVEC

  2005. 		if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2006. 		    ((srcFormat == PIX_FMT_YUV420P && 

  2007. 		      (dstFormat == PIX_FMT_YUYV422 || dstFormat == PIX_FMT_UYVY422)))) {

  2008. 		  // unscaled YV12 -> packed YUV, we want speed

  2009. 		  if (dstFormat == PIX_FMT_YUYV422)

  2010. 		    c->swScale= yv12toyuy2_unscaled_altivec;

  2011. 		  else

  2012. 		    c->swScale= yv12touyvy_unscaled_altivec;

  2013. 		}

  2014. #endif

  2015. 

  2016. 		/* simple copy */

  2017. 		if(   srcFormat == dstFormat

  2018. 		   || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2019. 		   || (isPlanarYUV(dstFormat) && isGray(srcFormat))

  2020. 		  )

  2021. 		{

  2022. 			c->swScale= simpleCopy;

  2023. 		}

  2024. 

  2025. 		if(c->swScale){

  2026. 			if(flags&SWS_PRINT_INFO)

  2027. 				MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n", 

  2028. 					sws_format_name(srcFormat), sws_format_name(dstFormat));

  2029. 			return c;

  2030. 		}

  2031. 	}

  2032. 

  2033. 	if(flags & SWS_CPU_CAPS_MMX2)

  2034. 	{

  2035. 		c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2036. 		if(!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR))

  2037. 		{

  2038. 			if(flags&SWS_PRINT_INFO)

  2039. 				MSG_INFO("SwScaler: output Width is not a multiple of 32 -> no MMX2 scaler\n");

  2040. 		}

  2041. 		if(usesHFilter) c->canMMX2BeUsed=0;

  2042. 	}

  2043. 	else

  2044. 		c->canMMX2BeUsed=0;

  2045. 

  2046. 	c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2047. 	c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2048. 

  2049. 	// match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2050. 	// but only for the FAST_BILINEAR mode otherwise do correct scaling

  2051. 	// n-2 is the last chrominance sample available

  2052. 	// this is not perfect, but noone shuld notice the difference, the more correct variant

  2053. 	// would be like the vertical one, but that would require some special code for the

  2054. 	// first and last pixel

  2055. 	if(flags&SWS_FAST_BILINEAR)

  2056. 	{

  2057. 		if(c->canMMX2BeUsed)

  2058. 		{

  2059. 			c->lumXInc+= 20;

  2060. 			c->chrXInc+= 20;

  2061. 		}

  2062. 		//we don't use the x86asm scaler if mmx is available

  2063. 		else if(flags & SWS_CPU_CAPS_MMX)

  2064. 		{

  2065. 			c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2066. 			c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2067. 		}

  2068. 	}

  2069. 

  2070. 	/* precalculate horizontal scaler filter coefficients */

  2071. 	{

  2072. 		const int filterAlign=

  2073. 		  (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2074. 		  (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2075. 		  1;

  2076. 

  2077. 		initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2078. 				 srcW      ,       dstW, filterAlign, 1<<14,

  2079. 				 (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2080. 				 srcFilter->lumH, dstFilter->lumH, c->param);

  2081. 		initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2082. 				 c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2083. 				 (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2084. 				 srcFilter->chrH, dstFilter->chrH, c->param);

  2085. 

  2086. #define MAX_FUNNY_CODE_SIZE 10000

  2087. #if defined(COMPILE_MMX2)

  2088. // can't downscale !!!

  2089. 		if(c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR))

  2090. 		{

  2091. #ifdef MAP_ANONYMOUS

  2092. 			c->funnyYCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2093. 			c->funnyUVCode = (uint8_t*)mmap(NULL, MAX_FUNNY_CODE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2094. #else

  2095. 			c->funnyYCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2096. 			c->funnyUVCode = av_malloc(MAX_FUNNY_CODE_SIZE);

  2097. #endif

  2098. 

  2099. 			c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));

  2100. 			c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));

  2101. 			c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));

  2102. 			c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));

  2103. 

  2104. 			initMMX2HScaler(      dstW, c->lumXInc, c->funnyYCode , c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2105. 			initMMX2HScaler(c->chrDstW, c->chrXInc, c->funnyUVCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2106. 		}

  2107. #endif /* defined(COMPILE_MMX2) */

  2108. 	} // Init Horizontal stuff

  2109. 

  2110. 

  2111. 

  2112. 	/* precalculate vertical scaler filter coefficients */

  2113. 	{

  2114. 		const int filterAlign=

  2115. 		  (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2116. 		  (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2117. 		  1;

  2118. 

  2119. 		initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2120. 				srcH      ,        dstH, filterAlign, (1<<12)-4,

  2121. 				(flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2122. 				srcFilter->lumV, dstFilter->lumV, c->param);

  2123. 		initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2124. 				c->chrSrcH, c->chrDstH, filterAlign, (1<<12)-4,

  2125. 				(flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2126. 				srcFilter->chrV, dstFilter->chrV, c->param);

  2127. 

  2128. #ifdef HAVE_ALTIVEC

  2129. 		c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);

  2130. 		c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);

  2131. 

  2132. 		for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2133.                   int j;

  2134. 		  short *p = (short *)&c->vYCoeffsBank[i];

  2135. 		  for (j=0;j<8;j++)

  2136. 		    p[j] = c->vLumFilter[i];

  2137. 		}

  2138. 

  2139. 		for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2140.                   int j;

  2141. 		  short *p = (short *)&c->vCCoeffsBank[i];

  2142. 		  for (j=0;j<8;j++)

  2143. 		    p[j] = c->vChrFilter[i];

  2144. 		}

  2145. #endif

  2146. 	}

  2147. 

  2148. 	// Calculate Buffer Sizes so that they won't run out while handling these damn slices

  2149. 	c->vLumBufSize= c->vLumFilterSize;

  2150. 	c->vChrBufSize= c->vChrFilterSize;

  2151. 	for(i=0; i<dstH; i++)

  2152. 	{

  2153. 		int chrI= i*c->chrDstH / dstH;

  2154. 		int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2155. 				 ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2156. 

  2157. 		nextSlice>>= c->chrSrcVSubSample;

  2158. 		nextSlice<<= c->chrSrcVSubSample;

  2159. 		if(c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2160. 			c->vLumBufSize= nextSlice - c->vLumFilterPos[i   ];

  2161. 		if(c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2162. 			c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2163. 	}

  2164. 

  2165. 	// allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2166. 	c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2167. 	c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));

  2168. 	//Note we need at least one pixel more at the end because of the mmx code (just in case someone wanna replace the 4000/8000)

  2169. 	/* align at 16 bytes for AltiVec */

  2170. 	for(i=0; i<c->vLumBufSize; i++)

  2171. 		c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_malloc(4000);

  2172. 	for(i=0; i<c->vChrBufSize; i++)

  2173. 		c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc(8000);

  2174. 

  2175. 	//try to avoid drawing green stuff between the right end and the stride end

  2176. 	for(i=0; i<c->vLumBufSize; i++) memset(c->lumPixBuf[i], 0, 4000);

  2177. 	for(i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, 8000);

  2178. 

  2179. 	ASSERT(c->chrDstH <= dstH)

  2180. 

  2181. 	if(flags&SWS_PRINT_INFO)

  2182. 	{

  2183. #ifdef DITHER1XBPP

  2184. 		char *dither= " dithered";

  2185. #else

  2186. 		char *dither= "";

  2187. #endif

  2188. 		if(flags&SWS_FAST_BILINEAR)

  2189. 			MSG_INFO("\nSwScaler: FAST_BILINEAR scaler, ");

  2190. 		else if(flags&SWS_BILINEAR)

  2191. 			MSG_INFO("\nSwScaler: BILINEAR scaler, ");

  2192. 		else if(flags&SWS_BICUBIC)

  2193. 			MSG_INFO("\nSwScaler: BICUBIC scaler, ");

  2194. 		else if(flags&SWS_X)

  2195. 			MSG_INFO("\nSwScaler: Experimental scaler, ");

  2196. 		else if(flags&SWS_POINT)

  2197. 			MSG_INFO("\nSwScaler: Nearest Neighbor / POINT scaler, ");

  2198. 		else if(flags&SWS_AREA)

  2199. 			MSG_INFO("\nSwScaler: Area Averageing scaler, ");

  2200. 		else if(flags&SWS_BICUBLIN)

  2201. 			MSG_INFO("\nSwScaler: luma BICUBIC / chroma BILINEAR scaler, ");

  2202. 		else if(flags&SWS_GAUSS)

  2203. 			MSG_INFO("\nSwScaler: Gaussian scaler, ");

  2204. 		else if(flags&SWS_SINC)

  2205. 			MSG_INFO("\nSwScaler: Sinc scaler, ");

  2206. 		else if(flags&SWS_LANCZOS)

  2207. 			MSG_INFO("\nSwScaler: Lanczos scaler, ");

  2208. 		else if(flags&SWS_SPLINE)

  2209. 			MSG_INFO("\nSwScaler: Bicubic spline scaler, ");

  2210. 		else

  2211. 			MSG_INFO("\nSwScaler: ehh flags invalid?! ");

  2212. 

  2213. 		if(dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2214. 			MSG_INFO("from %s to%s %s ", 

  2215. 				sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2216. 		else

  2217. 			MSG_INFO("from %s to %s ", 

  2218. 				sws_format_name(srcFormat), sws_format_name(dstFormat));

  2219. 

  2220. 		if(flags & SWS_CPU_CAPS_MMX2)

  2221. 			MSG_INFO("using MMX2\n");

  2222. 		else if(flags & SWS_CPU_CAPS_3DNOW)

  2223. 			MSG_INFO("using 3DNOW\n");

  2224. 		else if(flags & SWS_CPU_CAPS_MMX)

  2225. 			MSG_INFO("using MMX\n");

  2226. 		else if(flags & SWS_CPU_CAPS_ALTIVEC)

  2227. 			MSG_INFO("using AltiVec\n");

  2228. 		else 

  2229. 			MSG_INFO("using C\n");

  2230. 	}

  2231. 

  2232. 	if(flags & SWS_PRINT_INFO)

  2233. 	{

  2234. 		if(flags & SWS_CPU_CAPS_MMX)

  2235. 		{

  2236. 			if(c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2237. 				MSG_V("SwScaler: using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  2238. 			else

  2239. 			{

  2240. 				if(c->hLumFilterSize==4)

  2241. 					MSG_V("SwScaler: using 4-tap MMX scaler for horizontal luminance scaling\n");

  2242. 				else if(c->hLumFilterSize==8)

  2243. 					MSG_V("SwScaler: using 8-tap MMX scaler for horizontal luminance scaling\n");

  2244. 				else

  2245. 					MSG_V("SwScaler: using n-tap MMX scaler for horizontal luminance scaling\n");

  2246. 

  2247. 				if(c->hChrFilterSize==4)

  2248. 					MSG_V("SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling\n");

  2249. 				else if(c->hChrFilterSize==8)

  2250. 					MSG_V("SwScaler: using 8-tap MMX scaler for horizontal chrominance scaling\n");

  2251. 				else

  2252. 					MSG_V("SwScaler: using n-tap MMX scaler for horizontal chrominance scaling\n");

  2253. 			}

  2254. 		}

  2255. 		else

  2256. 		{

  2257. #if defined(ARCH_X86) || defined(ARCH_X86_64)

  2258. 			MSG_V("SwScaler: using X86-Asm scaler for horizontal scaling\n");

  2259. #else

  2260. 			if(flags & SWS_FAST_BILINEAR)

  2261. 				MSG_V("SwScaler: using FAST_BILINEAR C scaler for horizontal scaling\n");

  2262. 			else

  2263. 				MSG_V("SwScaler: using C scaler for horizontal scaling\n");

  2264. #endif

  2265. 		}

  2266. 		if(isPlanarYUV(dstFormat))

  2267. 		{

  2268. 			if(c->vLumFilterSize==1)

  2269. 				MSG_V("SwScaler: using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2270. 			else

  2271. 				MSG_V("SwScaler: using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2272. 		}

  2273. 		else

  2274. 		{

  2275. 			if(c->vLumFilterSize==1 && c->vChrFilterSize==2)

  2276. 				MSG_V("SwScaler: using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  2277. 				       "SwScaler:       2-tap scaler for vertical chrominance scaling (BGR)\n",(flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2278. 			else if(c->vLumFilterSize==2 && c->vChrFilterSize==2)

  2279. 				MSG_V("SwScaler: using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2280. 			else

  2281. 				MSG_V("SwScaler: using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2282. 		}

  2283. 

  2284. 		if(dstFormat==PIX_FMT_BGR24)

  2285. 			MSG_V("SwScaler: using %s YV12->BGR24 Converter\n",

  2286. 				(flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  2287. 		else if(dstFormat==PIX_FMT_RGB32)

  2288. 			MSG_V("SwScaler: using %s YV12->BGR32 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2289. 		else if(dstFormat==PIX_FMT_BGR565)

  2290. 			MSG_V("SwScaler: using %s YV12->BGR16 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2291. 		else if(dstFormat==PIX_FMT_BGR555)

  2292. 			MSG_V("SwScaler: using %s YV12->BGR15 Converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  2293. 

  2294. 		MSG_V("SwScaler: %dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  2295. 	}

  2296. 	if(flags & SWS_PRINT_INFO)

  2297. 	{

  2298. 		MSG_DBG2("SwScaler:Lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2299. 			c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  2300. 		MSG_DBG2("SwScaler:Chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  2301. 			c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  2302. 	}

  2303. 

  2304. 	c->swScale= getSwsFunc(flags);

  2305. 	return c;

  2306. }

  2307. 

  2308. /**

  2309.  * swscale warper, so we don't need to export the SwsContext.

  2310.  * assumes planar YUV to be in YUV order instead of YVU

  2311.  */

  2312. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2313.                            int srcSliceH, uint8_t* dst[], int dstStride[]){

  2314. 	if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  2315. 	    MSG_ERR("swScaler: slices start in the middle!\n");

  2316. 	    return 0;

  2317. 	}

  2318. 	if (c->sliceDir == 0) {

  2319. 	    if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  2320. 	}

  2321. 

  2322. 	// copy strides, so they can safely be modified

  2323. 	if (c->sliceDir == 1) {

  2324. 	    // slices go from top to bottom

  2325. 	    int srcStride2[3]= {srcStride[0], srcStride[1], srcStride[2]};

  2326. 	    int dstStride2[3]= {dstStride[0], dstStride[1], dstStride[2]};

  2327. 	    return c->swScale(c, src, srcStride2, srcSliceY, srcSliceH, dst, dstStride2);

  2328. 	} else {

  2329. 	    // slices go from bottom to top => we flip the image internally

  2330. 	    uint8_t* src2[3]= {src[0] + (srcSliceH-1)*srcStride[0],

  2331. 			       src[1] + ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1],

  2332. 			       src[2] + ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2]

  2333. 	    };

  2334. 	    uint8_t* dst2[3]= {dst[0] + (c->dstH-1)*dstStride[0],

  2335. 			       dst[1] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1],

  2336. 			       dst[2] + ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2]};

  2337. 	    int srcStride2[3]= {-srcStride[0], -srcStride[1], -srcStride[2]};

  2338. 	    int dstStride2[3]= {-dstStride[0], -dstStride[1], -dstStride[2]};

  2339. 	    

  2340. 	    return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  2341. 	}

  2342. }

  2343. 

  2344. /**

  2345.  * swscale warper, so we don't need to export the SwsContext

  2346.  */

  2347. int sws_scale(SwsContext *c, uint8_t* srcParam[], int srcStride[], int srcSliceY,

  2348.                            int srcSliceH, uint8_t* dstParam[], int dstStride[]){

  2349. 	uint8_t *src[3];

  2350. 	uint8_t *dst[3];

  2351. 	src[0] = srcParam[0]; src[1] = srcParam[1]; src[2] = srcParam[2];

  2352. 	dst[0] = dstParam[0]; dst[1] = dstParam[1]; dst[2] = dstParam[2];

  2353. //printf("sws: slice %d %d\n", srcSliceY, srcSliceH);

  2354. 

  2355. 	return c->swScale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  2356. }

  2357. 

  2358. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur, 

  2359. 				float lumaSharpen, float chromaSharpen,

  2360. 				float chromaHShift, float chromaVShift,

  2361. 				int verbose)

  2362. {

  2363. 	SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  2364. 

  2365. 	if(lumaGBlur!=0.0){

  2366. 		filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  2367. 		filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  2368. 	}else{

  2369. 		filter->lumH= sws_getIdentityVec();

  2370. 		filter->lumV= sws_getIdentityVec();

  2371. 	}

  2372. 

  2373. 	if(chromaGBlur!=0.0){

  2374. 		filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  2375. 		filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  2376. 	}else{

  2377. 		filter->chrH= sws_getIdentityVec();

  2378. 		filter->chrV= sws_getIdentityVec();

  2379. 	}

  2380. 

  2381. 	if(chromaSharpen!=0.0){

  2382. 		SwsVector *id= sws_getIdentityVec();

  2383.                 sws_scaleVec(filter->chrH, -chromaSharpen);

  2384.                 sws_scaleVec(filter->chrV, -chromaSharpen);

  2385. 		sws_addVec(filter->chrH, id);

  2386. 		sws_addVec(filter->chrV, id);

  2387. 		sws_freeVec(id);

  2388. 	}

  2389. 

  2390. 	if(lumaSharpen!=0.0){

  2391. 		SwsVector *id= sws_getIdentityVec();

  2392.                 sws_scaleVec(filter->lumH, -lumaSharpen);

  2393.                 sws_scaleVec(filter->lumV, -lumaSharpen);

  2394. 		sws_addVec(filter->lumH, id);

  2395. 		sws_addVec(filter->lumV, id);

  2396. 		sws_freeVec(id);

  2397. 	}

  2398. 

  2399. 	if(chromaHShift != 0.0)

  2400. 		sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  2401. 

  2402. 	if(chromaVShift != 0.0)

  2403. 		sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  2404. 

  2405. 	sws_normalizeVec(filter->chrH, 1.0);

  2406. 	sws_normalizeVec(filter->chrV, 1.0);

  2407. 	sws_normalizeVec(filter->lumH, 1.0);

  2408. 	sws_normalizeVec(filter->lumV, 1.0);

  2409. 

  2410. 	if(verbose) sws_printVec(filter->chrH);

  2411. 	if(verbose) sws_printVec(filter->lumH);

  2412. 

  2413.         return filter;

  2414. }

  2415. 

  2416. /**

  2417.  * returns a normalized gaussian curve used to filter stuff

  2418.  * quality=3 is high quality, lowwer is lowwer quality

  2419.  */

  2420. SwsVector *sws_getGaussianVec(double variance, double quality){

  2421. 	const int length= (int)(variance*quality + 0.5) | 1;

  2422. 	int i;

  2423. 	double *coeff= av_malloc(length*sizeof(double));

  2424. 	double middle= (length-1)*0.5;

  2425. 	SwsVector *vec= av_malloc(sizeof(SwsVector));

  2426. 

  2427. 	vec->coeff= coeff;

  2428. 	vec->length= length;

  2429. 

  2430. 	for(i=0; i<length; i++)

  2431. 	{

  2432. 		double dist= i-middle;

  2433. 		coeff[i]= exp( -dist*dist/(2*variance*variance) ) / sqrt(2*variance*PI);

  2434. 	}

  2435. 

  2436. 	sws_normalizeVec(vec, 1.0);

  2437. 

  2438. 	return vec;

  2439. }

  2440. 

  2441. SwsVector *sws_getConstVec(double c, int length){

  2442. 	int i;

  2443. 	double *coeff= av_malloc(length*sizeof(double));

  2444. 	SwsVector *vec= av_malloc(sizeof(SwsVector));

  2445. 

  2446. 	vec->coeff= coeff;

  2447. 	vec->length= length;

  2448. 

  2449. 	for(i=0; i<length; i++)

  2450. 		coeff[i]= c;

  2451. 

  2452. 	return vec;

  2453. }

  2454. 

  2455. 

  2456. SwsVector *sws_getIdentityVec(void){

  2457.         return sws_getConstVec(1.0, 1);

  2458. }

  2459. 

  2460. double sws_dcVec(SwsVector *a){

  2461. 	int i;

  2462.         double sum=0;

  2463. 

  2464. 	for(i=0; i<a->length; i++)

  2465. 		sum+= a->coeff[i];

  2466. 

  2467.         return sum;

  2468. }

  2469. 

  2470. void sws_scaleVec(SwsVector *a, double scalar){

  2471. 	int i;

  2472. 

  2473. 	for(i=0; i<a->length; i++)

  2474. 		a->coeff[i]*= scalar;

  2475. }

  2476. 

  2477. void sws_normalizeVec(SwsVector *a, double height){

  2478.         sws_scaleVec(a, height/sws_dcVec(a));

  2479. }

  2480. 

  2481. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b){

  2482. 	int length= a->length + b->length - 1;

  2483. 	double *coeff= av_malloc(length*sizeof(double));

  2484. 	int i, j;

  2485. 	SwsVector *vec= av_malloc(sizeof(SwsVector));

  2486. 

  2487. 	vec->coeff= coeff;

  2488. 	vec->length= length;

  2489. 

  2490. 	for(i=0; i<length; i++) coeff[i]= 0.0;

  2491. 

  2492. 	for(i=0; i<a->length; i++)

  2493. 	{

  2494. 		for(j=0; j<b->length; j++)

  2495. 		{

  2496. 			coeff[i+j]+= a->coeff[i]*b->coeff[j];

  2497. 		}

  2498. 	}

  2499. 

  2500. 	return vec;

  2501. }

  2502. 

  2503. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b){

  2504. 	int length= FFMAX(a->length, b->length);

  2505. 	double *coeff= av_malloc(length*sizeof(double));

  2506. 	int i;

  2507. 	SwsVector *vec= av_malloc(sizeof(SwsVector));

  2508. 

  2509. 	vec->coeff= coeff;

  2510. 	vec->length= length;

  2511. 

  2512. 	for(i=0; i<length; i++) coeff[i]= 0.0;

  2513. 

  2514. 	for(i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2515. 	for(i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  2516. 

  2517. 	return vec;

  2518. }

  2519. 

  2520. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b){

  2521. 	int length= FFMAX(a->length, b->length);

  2522. 	double *coeff= av_malloc(length*sizeof(double));

  2523. 	int i;

  2524. 	SwsVector *vec= av_malloc(sizeof(SwsVector));

  2525. 

  2526. 	vec->coeff= coeff;

  2527. 	vec->length= length;

  2528. 

  2529. 	for(i=0; i<length; i++) coeff[i]= 0.0;

  2530. 

  2531. 	for(i=0; i<a->length; i++) coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  2532. 	for(i=0; i<b->length; i++) coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  2533. 

  2534. 	return vec;

  2535. }

  2536. 

  2537. /* shift left / or right if "shift" is negative */

  2538. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift){

  2539. 	int length= a->length + ABS(shift)*2;

  2540. 	double *coeff= av_malloc(length*sizeof(double));

  2541. 	int i;

  2542. 	SwsVector *vec= av_malloc(sizeof(SwsVector));

  2543. 

  2544. 	vec->coeff= coeff;

  2545. 	vec->length= length;

  2546. 

  2547. 	for(i=0; i<length; i++) coeff[i]= 0.0;

  2548. 

  2549. 	for(i=0; i<a->length; i++)

  2550. 	{

  2551. 		coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  2552. 	}

  2553. 

  2554. 	return vec;

  2555. }

  2556. 

  2557. void sws_shiftVec(SwsVector *a, int shift){

  2558. 	SwsVector *shifted= sws_getShiftedVec(a, shift);

  2559. 	av_free(a->coeff);

  2560. 	a->coeff= shifted->coeff;

  2561. 	a->length= shifted->length;

  2562. 	av_free(shifted);

  2563. }

  2564. 

  2565. void sws_addVec(SwsVector *a, SwsVector *b){

  2566. 	SwsVector *sum= sws_sumVec(a, b);

  2567. 	av_free(a->coeff);

  2568. 	a->coeff= sum->coeff;

  2569. 	a->length= sum->length;

  2570. 	av_free(sum);

  2571. }

  2572. 

  2573. void sws_subVec(SwsVector *a, SwsVector *b){

  2574. 	SwsVector *diff= sws_diffVec(a, b);

  2575. 	av_free(a->coeff);

  2576. 	a->coeff= diff->coeff;

  2577. 	a->length= diff->length;

  2578. 	av_free(diff);

  2579. }

  2580. 

  2581. void sws_convVec(SwsVector *a, SwsVector *b){

  2582. 	SwsVector *conv= sws_getConvVec(a, b);

  2583. 	av_free(a->coeff);  

  2584. 	a->coeff= conv->coeff;

  2585. 	a->length= conv->length;

  2586. 	av_free(conv);

  2587. }

  2588. 

  2589. SwsVector *sws_cloneVec(SwsVector *a){

  2590. 	double *coeff= av_malloc(a->length*sizeof(double));

  2591. 	int i;

  2592. 	SwsVector *vec= av_malloc(sizeof(SwsVector));

  2593. 

  2594. 	vec->coeff= coeff;

  2595. 	vec->length= a->length;

  2596. 

  2597. 	for(i=0; i<a->length; i++) coeff[i]= a->coeff[i];

  2598. 

  2599. 	return vec;

  2600. }

  2601. 

  2602. void sws_printVec(SwsVector *a){

  2603. 	int i;

  2604. 	double max=0;

  2605. 	double min=0;

  2606. 	double range;

  2607. 

  2608. 	for(i=0; i<a->length; i++)

  2609. 		if(a->coeff[i]>max) max= a->coeff[i];

  2610. 

  2611. 	for(i=0; i<a->length; i++)

  2612. 		if(a->coeff[i]<min) min= a->coeff[i];

  2613. 

  2614. 	range= max - min;

  2615. 

  2616. 	for(i=0; i<a->length; i++)

  2617. 	{

  2618. 		int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  2619. 		MSG_DBG2("%1.3f ", a->coeff[i]);

  2620. 		for(;x>0; x--) MSG_DBG2(" ");

  2621. 		MSG_DBG2("|\n");

  2622. 	}

  2623. }

  2624. 

  2625. void sws_freeVec(SwsVector *a){

  2626. 	if(!a) return;

  2627. 	av_free(a->coeff);

  2628. 	a->coeff=NULL;

  2629. 	a->length=0;

  2630. 	av_free(a);

  2631. }

  2632. 

  2633. void sws_freeFilter(SwsFilter *filter){

  2634. 	if(!filter) return;

  2635. 

  2636. 	if(filter->lumH) sws_freeVec(filter->lumH);

  2637. 	if(filter->lumV) sws_freeVec(filter->lumV);

  2638. 	if(filter->chrH) sws_freeVec(filter->chrH);

  2639. 	if(filter->chrV) sws_freeVec(filter->chrV);

  2640. 	av_free(filter);

  2641. }

  2642. 

  2643. 

  2644. void sws_freeContext(SwsContext *c){

  2645. 	int i;

  2646. 	if(!c) return;

  2647. 

  2648. 	if(c->lumPixBuf)

  2649. 	{

  2650. 		for(i=0; i<c->vLumBufSize; i++)

  2651. 		{

  2652. 			av_free(c->lumPixBuf[i]);

  2653. 			c->lumPixBuf[i]=NULL;

  2654. 		}

  2655. 		av_free(c->lumPixBuf);

  2656. 		c->lumPixBuf=NULL;

  2657. 	}

  2658. 

  2659. 	if(c->chrPixBuf)

  2660. 	{

  2661. 		for(i=0; i<c->vChrBufSize; i++)

  2662. 		{

  2663. 			av_free(c->chrPixBuf[i]);

  2664. 			c->chrPixBuf[i]=NULL;

  2665. 		}

  2666. 		av_free(c->chrPixBuf);

  2667. 		c->chrPixBuf=NULL;

  2668. 	}

  2669. 

  2670. 	av_free(c->vLumFilter);

  2671. 	c->vLumFilter = NULL;

  2672. 	av_free(c->vChrFilter);

  2673. 	c->vChrFilter = NULL;

  2674. 	av_free(c->hLumFilter);

  2675. 	c->hLumFilter = NULL;

  2676. 	av_free(c->hChrFilter);

  2677. 	c->hChrFilter = NULL;

  2678. #ifdef HAVE_ALTIVEC

  2679. 	av_free(c->vYCoeffsBank);

  2680. 	c->vYCoeffsBank = NULL;

  2681. 	av_free(c->vCCoeffsBank);

  2682. 	c->vCCoeffsBank = NULL;

  2683. #endif

  2684. 

  2685. 	av_free(c->vLumFilterPos);

  2686. 	c->vLumFilterPos = NULL;

  2687. 	av_free(c->vChrFilterPos);

  2688. 	c->vChrFilterPos = NULL;

  2689. 	av_free(c->hLumFilterPos);

  2690. 	c->hLumFilterPos = NULL;

  2691. 	av_free(c->hChrFilterPos);

  2692. 	c->hChrFilterPos = NULL;

  2693. 

  2694. #if defined(ARCH_X86) || defined(ARCH_X86_64)

  2695. #ifdef MAP_ANONYMOUS

  2696. 	if(c->funnyYCode) munmap(c->funnyYCode, MAX_FUNNY_CODE_SIZE);

  2697. 	if(c->funnyUVCode) munmap(c->funnyUVCode, MAX_FUNNY_CODE_SIZE);

  2698. #else

  2699. 	av_free(c->funnyYCode);

  2700. 	av_free(c->funnyUVCode);

  2701. #endif

  2702. 	c->funnyYCode=NULL;

  2703. 	c->funnyUVCode=NULL;

  2704. #endif /* defined(ARCH_X86) || defined(ARCH_X86_64) */

  2705. 

  2706. 	av_free(c->lumMmx2Filter);

  2707. 	c->lumMmx2Filter=NULL;

  2708. 	av_free(c->chrMmx2Filter);

  2709. 	c->chrMmx2Filter=NULL;

  2710. 	av_free(c->lumMmx2FilterPos);

  2711. 	c->lumMmx2FilterPos=NULL;

  2712. 	av_free(c->chrMmx2FilterPos);

  2713. 	c->chrMmx2FilterPos=NULL;

  2714. 	av_free(c->yuvTable);

  2715. 	c->yuvTable=NULL;

  2716. 

  2717. 	av_free(c);

  2718. }

  2719. 

  2720. /**

  2721.  * Checks if context is valid or reallocs a new one instead.

  2722.  * If context is NULL, just calls sws_getContext() to get a new one.

  2723.  * Otherwise, checks if the parameters are the same already saved in context.

  2724.  * If that is the case, returns the current context.

  2725.  * Otherwise, frees context and gets a new one.

  2726.  *

  2727.  * Be warned that srcFilter, dstFilter are not checked, they are

  2728.  * asumed to remain valid.

  2729.  */

  2730. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  2731.                         int srcW, int srcH, int srcFormat,

  2732.                         int dstW, int dstH, int dstFormat, int flags,

  2733.                         SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)

  2734. {

  2735.     if (context != NULL) {

  2736.         if ((context->srcW != srcW) || (context->srcH != srcH) ||

  2737.             (context->srcFormat != srcFormat) ||

  2738.             (context->dstW != dstW) || (context->dstH != dstH) ||

  2739.             (context->dstFormat != dstFormat) || (context->flags != flags) ||

  2740.             (context->param != param))

  2741.         {

  2742.             sws_freeContext(context);

  2743.             context = NULL;

  2744.         }

  2745.     }

  2746.     if (context == NULL) {

  2747.         return sws_getContext(srcW, srcH, srcFormat,

  2748.                         dstW, dstH, dstFormat, flags,

  2749.                         srcFilter, dstFilter, param);

  2750.     }

  2751.     return context;

  2752. }