Mercurial > vba-linux

     1 #include "../common/System.h"

     2 

     3 extern "C"

     4 {

     5 #ifdef MMX

     6 	void _2xSaILine(u8 *srcPtr, u8 *deltaPtr, u32 srcPitch,

     7 	                u32 width, u8 *dstPtr, u32 dstPitch);

     8 	void _2xSaISuperEagleLine(u8 *srcPtr, u8 *deltaPtr,

     9 	                          u32 srcPitch, u32 width,

    10 	                          u8 *dstPtr, u32 dstPitch);

    11 	void _2xSaISuper2xSaILine(u8 *srcPtr, u8 *deltaPtr,

    12 	                          u32 srcPitch, u32 width,

    13 	                          u8 *dstPtr, u32 dstPitch);

    14 	void Init_2xSaIMMX(u32 BitFormat);

    15 	void BilinearMMX(u16 *A, u16 *B, u16 *C, u16 *D,

    16 	                 u16 *dx, u16 *dy, u8 *dP);

    17 	void BilinearMMXGrid0(u16 *A, u16 *B, u16 *C, u16 *D,

    18 	                      u16 *dx, u16 *dy, u8 *dP);

    19 	void BilinearMMXGrid1(u16 *A, u16 *B, u16 *C, u16 *D,

    20 	                      u16 *dx, u16 *dy, u8 *dP);

    21 	void EndMMX();

    22 

    23 	bool cpu_mmx = 1;

    24 #endif

    25 }

    26 static u32 colorMask	 = 0xF7DEF7DE;

    27 static u32 lowPixelMask	 = 0x08210821;

    28 static u32 qcolorMask	 = 0xE79CE79C;

    29 static u32 qlowpixelMask = 0x18631863;

    30 static u32 redblueMask	 = 0xF81F;

    31 static u32 greenMask	 = 0x7E0;

    32 

    33 u32 qRGB_COLOR_MASK[2] = { 0xF7DEF7DE, 0xF7DEF7DE };

    34 

    35 extern void hq2x_init(unsigned);

    36 

    37 int Init_2xSaI(u32 BitFormat)

    38 {

    39 	if (systemColorDepth == 16)

    40 	{

    41 		if (BitFormat == 565)

    42 		{

    43 			colorMask		   = 0xF7DEF7DE;

    44 			lowPixelMask	   = 0x08210821;

    45 			qcolorMask		   = 0xE79CE79C;

    46 			qlowpixelMask	   = 0x18631863;

    47 			redblueMask		   = 0xF81F;

    48 			greenMask		   = 0x7E0;

    49 			qRGB_COLOR_MASK[0] = qRGB_COLOR_MASK[1] = 0xF7DEF7DE;

    50 			hq2x_init(16);

    51 		}

    52 		else if (BitFormat == 555)

    53 		{

    54 			colorMask		   = 0x7BDE7BDE;

    55 			lowPixelMask	   = 0x04210421;

    56 			qcolorMask		   = 0x739C739C;

    57 			qlowpixelMask	   = 0x0C630C63;

    58 			redblueMask		   = 0x7C1F;

    59 			greenMask		   = 0x3E0;

    60 			qRGB_COLOR_MASK[0] = qRGB_COLOR_MASK[1] = 0x7BDE7BDE;

    61 			hq2x_init(15);

    62 		}

    63 		else

    64 		{

    65 			return 0;

    66 		}

    67 	}

    68 	else if (systemColorDepth == 32)

    69 	{

    70 		colorMask		   = 0xfefefe;

    71 		lowPixelMask	   = 0x010101;

    72 		qcolorMask		   = 0xfcfcfc;

    73 		qlowpixelMask	   = 0x030303;

    74 		qRGB_COLOR_MASK[0] = qRGB_COLOR_MASK[1] = 0xfefefe;

    75 		hq2x_init(32);

    76 	}

    77 	else

    78 		return 0;

    79 

    80 #ifdef MMX

    81 	Init_2xSaIMMX(BitFormat);

    82 #endif

    83 

    84 	return 1;

    85 }

    86 

    87 static inline int GetResult1(u32 A, u32 B, u32 C, u32 D,

    88                              u32 /* E */)

    89 {

    90 	int x = 0;

    91 	int y = 0;

    92 	int r = 0;

    93 

    94 	if (A == C)

    95 		x += 1;

    96 	else if (B == C)

    97 		y += 1;

    98 	if (A == D)

    99 		x += 1;

   100 	else if (B == D)

   101 		y += 1;

   102 	if (x <= 1)

   103 		r += 1;

   104 	if (y <= 1)

   105 		r -= 1;

   106 	return r;

   107 }

   108 

   109 static inline int GetResult2(u32 A, u32 B, u32 C, u32 D,

   110                              u32 /* E */)

   111 {

   112 	int x = 0;

   113 	int y = 0;

   114 	int r = 0;

   115 

   116 	if (A == C)

   117 		x += 1;

   118 	else if (B == C)

   119 		y += 1;

   120 	if (A == D)

   121 		x += 1;

   122 	else if (B == D)

   123 		y += 1;

   124 	if (x <= 1)

   125 		r -= 1;

   126 	if (y <= 1)

   127 		r += 1;

   128 	return r;

   129 }

   130 

   131 static inline int GetResult(u32 A, u32 B, u32 C, u32 D)

   132 {

   133 	int x = 0;

   134 	int y = 0;

   135 	int r = 0;

   136 

   137 	if (A == C)

   138 		x += 1;

   139 	else if (B == C)

   140 		y += 1;

   141 	if (A == D)

   142 		x += 1;

   143 	else if (B == D)

   144 		y += 1;

   145 	if (x <= 1)

   146 		r += 1;

   147 	if (y <= 1)

   148 		r -= 1;

   149 	return r;

   150 }

   151 

   152 static inline u32 INTERPOLATE(u32 A, u32 B)

   153 {

   154 	if (A != B)

   155 	{

   156 		return (((A & colorMask) >> 1) + ((B & colorMask) >> 1) +

   157 		        (A & B & lowPixelMask));

   158 	}

   159 	else

   160 		return A;

   161 }

   162 

   163 static inline u32 Q_INTERPOLATE(u32 A, u32 B, u32 C, u32 D)

   164 {

   165 	register u32 x = ((A & qcolorMask) >> 2) +

   166 	                 ((B & qcolorMask) >> 2) +

   167 	                 ((C & qcolorMask) >> 2) + ((D & qcolorMask) >> 2);

   168 	register u32 y = (A & qlowpixelMask) +

   169 	                 (B & qlowpixelMask) + (C & qlowpixelMask) + (D & qlowpixelMask);

   170 

   171 	y = (y >> 2) & qlowpixelMask;

   172 	return x + y;

   173 }

   174 

   175 static inline int GetResult1_32(u32 A, u32 B, u32 C, u32 D,

   176                                 u32 /* E */)

   177 {

   178 	int x = 0;

   179 	int y = 0;

   180 	int r = 0;

   181 

   182 	if (A == C)

   183 		x += 1;

   184 	else if (B == C)

   185 		y += 1;

   186 	if (A == D)

   187 		x += 1;

   188 	else if (B == D)

   189 		y += 1;

   190 	if (x <= 1)

   191 		r += 1;

   192 	if (y <= 1)

   193 		r -= 1;

   194 	return r;

   195 }

   196 

   197 static inline int GetResult2_32(u32 A, u32 B, u32 C, u32 D,

   198                                 u32 /* E */)

   199 {

   200 	int x = 0;

   201 	int y = 0;

   202 	int r = 0;

   203 

   204 	if (A == C)

   205 		x += 1;

   206 	else if (B == C)

   207 		y += 1;

   208 	if (A == D)

   209 		x += 1;

   210 	else if (B == D)

   211 		y += 1;

   212 	if (x <= 1)

   213 		r -= 1;

   214 	if (y <= 1)

   215 		r += 1;

   216 	return r;

   217 }

   218 

   219 #define BLUE_MASK565 0x001F001F

   220 #define RED_MASK565 0xF800F800

   221 #define GREEN_MASK565 0x07E007E0

   222 

   223 #define BLUE_MASK555 0x001F001F

   224 #define RED_MASK555 0x7C007C00

   225 #define GREEN_MASK555 0x03E003E0

   226 

   227 void Super2xSaI(u8 *srcPtr, u32 srcPitch,

   228                 u8 *deltaPtr, u8 *dstPtr, u32 dstPitch,

   229                 int width, int height)

   230 {

   231 	u16 *bP;

   232 	u8 * dP;

   233 	u32	 inc_bP;

   234 	u32	 Nextline = srcPitch >> 1;

   235 #ifdef MMX

   236 	if (cpu_mmx)

   237 	{

   238 		for (; height; height--)

   239 		{

   240 			_2xSaISuper2xSaILine(srcPtr, deltaPtr, srcPitch, width,

   241 			                     dstPtr, dstPitch);

   242 			srcPtr	 += srcPitch;

   243 			dstPtr	 += dstPitch * 2;

   244 			deltaPtr += srcPitch;

   245 		}

   246 	}

   247 	else

   248 #endif

   249 	{

   250 		inc_bP = 1;

   251 

   252 		for (; height; height--)

   253 		{

   254 			bP = (u16 *) srcPtr;

   255 			dP = (u8 *) dstPtr;

   256 

   257 			for (u32 finish = width; finish; finish -= inc_bP)

   258 			{

   259 				u32 color4, color5, color6;

   260 				u32 color1, color2, color3;

   261 				u32 colorA0, colorA1, colorA2, colorA3,

   262 				    colorB0, colorB1, colorB2, colorB3, colorS1, colorS2;

   263 				u32 product1a, product1b, product2a, product2b;

   264 

   265 				//---------------------------------------    B1 B2

   266 				//                                         4  5  6 S2

   267 				//                                         1  2  3 S1

   268 				//                                           A1 A2

   269 

   270 				colorB0 = *(bP - Nextline - 1);

   271 				colorB1 = *(bP - Nextline);

   272 				colorB2 = *(bP - Nextline + 1);

   273 				colorB3 = *(bP - Nextline + 2);

   274 

   275 				color4	= *(bP - 1);

   276 				color5	= *(bP);

   277 				color6	= *(bP + 1);

   278 				colorS2 = *(bP + 2);

   279 

   280 				color1	= *(bP + Nextline - 1);

   281 				color2	= *(bP + Nextline);

   282 				color3	= *(bP + Nextline + 1);

   283 				colorS1 = *(bP + Nextline + 2);

   284 

   285 				colorA0 = *(bP + Nextline + Nextline - 1);

   286 				colorA1 = *(bP + Nextline + Nextline);

   287 				colorA2 = *(bP + Nextline + Nextline + 1);

   288 				colorA3 = *(bP + Nextline + Nextline + 2);

   289 

   290 				//--------------------------------------

   291 				if (color2 == color6 && color5 != color3)

   292 				{

   293 					product2b = product1b = color2;

   294 				}

   295 				else if (color5 == color3 && color2 != color6)

   296 				{

   297 					product2b = product1b = color5;

   298 				}

   299 				else if (color5 == color3 && color2 == color6)

   300 				{

   301 					register int r = 0;

   302 

   303 					r += GetResult(color6, color5, color1, colorA1);

   304 					r += GetResult(color6, color5, color4, colorB1);

   305 					r += GetResult(color6, color5, colorA2, colorS1);

   306 					r += GetResult(color6, color5, colorB2, colorS2);

   307 

   308 					if (r > 0)

   309 						product2b = product1b = color6;

   310 					else if (r < 0)

   311 						product2b = product1b = color5;

   312 					else

   313 					{

   314 						product2b = product1b = INTERPOLATE(color5, color6);

   315 					}

   316 				}

   317 				else

   318 				{

   319 					if (color6 == color3 && color3 == colorA1

   320 					    && color2 != colorA2 && color3 != colorA0)

   321 						product2b =

   322 						    Q_INTERPOLATE(color3, color3, color3, color2);

   323 					else if (color5 == color2 && color2 == colorA2

   324 					         && colorA1 != color3 && color2 != colorA3)

   325 						product2b =

   326 						    Q_INTERPOLATE(color2, color2, color2, color3);

   327 					else

   328 						product2b = INTERPOLATE(color2, color3);

   329 

   330 					if (color6 == color3 && color6 == colorB1

   331 					    && color5 != colorB2 && color6 != colorB0)

   332 						product1b =

   333 						    Q_INTERPOLATE(color6, color6, color6, color5);

   334 					else if (color5 == color2 && color5 == colorB2

   335 					         && colorB1 != color6 && color5 != colorB3)

   336 						product1b =

   337 						    Q_INTERPOLATE(color6, color5, color5, color5);

   338 					else

   339 						product1b = INTERPOLATE(color5, color6);

   340 				}

   341 

   342 				if (color5 == color3 && color2 != color6 && color4 == color5

   343 				    && color5 != colorA2)

   344 					product2a = INTERPOLATE(color2, color5);

   345 				else

   346 					if (color5 == color1 && color6 == color5

   347 					    && color4 != color2 && color5 != colorA0)

   348 						product2a = INTERPOLATE(color2, color5);

   349 					else

   350 						product2a = color2;

   351 

   352 				if (color2 == color6 && color5 != color3 && color1 == color2

   353 				    && color2 != colorB2)

   354 					product1a = INTERPOLATE(color2, color5);

   355 				else

   356 					if (color4 == color2 && color3 == color2

   357 					    && color1 != color5 && color2 != colorB0)

   358 						product1a = INTERPOLATE(color2, color5);

   359 					else

   360 						product1a = color5;

   361 

   362 #ifdef WORDS_BIGENDIAN

   363 				product1a = (product1a << 16) | product1b;

   364 				product2a = (product2a << 16) | product2b;

   365 #else

   366 				product1a = product1a | (product1b << 16);

   367 				product2a = product2a | (product2b << 16);

   368 #endif

   369 

   370 				*((u32 *) dP) = product1a;

   371 				*((u32 *) (dP + dstPitch)) = product2a;

   372 

   373 				bP += inc_bP;

   374 				dP += sizeof(u32);

   375 			}                   // end of for ( finish= width etc..)

   376 

   377 			srcPtr	 += srcPitch;

   378 			dstPtr	 += dstPitch << 1;

   379 			deltaPtr += srcPitch;

   380 		}               // endof: for (; height; height--)

   381 	}

   382 }

   383 

   384 void Super2xSaI32(u8 *srcPtr, u32 srcPitch,

   385                   u8 * /* deltaPtr */, u8 *dstPtr, u32 dstPitch,

   386                   int width, int height)

   387 {

   388 	u32 *bP;

   389 	u32 *dP;

   390 	u32	 inc_bP;

   391 	u32	 Nextline = srcPitch >> 2;

   392 	inc_bP = 1;

   393 

   394 	for (; height; height--)

   395 	{

   396 		bP = (u32 *) srcPtr;

   397 		dP = (u32 *) dstPtr;

   398 

   399 		for (u32 finish = width; finish; finish -= inc_bP)

   400 		{

   401 			u32 color4, color5, color6;

   402 			u32 color1, color2, color3;

   403 			u32 colorA0, colorA1, colorA2, colorA3,

   404 			    colorB0, colorB1, colorB2, colorB3, colorS1, colorS2;

   405 			u32 product1a, product1b, product2a, product2b;

   406 

   407 			//---------------------------------------    B1 B2

   408 			//                                         4  5  6 S2

   409 			//                                         1  2  3 S1

   410 			//                                           A1 A2

   411 

   412 			colorB0 = *(bP - Nextline - 1);

   413 			colorB1 = *(bP - Nextline);

   414 			colorB2 = *(bP - Nextline + 1);

   415 			colorB3 = *(bP - Nextline + 2);

   416 

   417 			color4	= *(bP - 1);

   418 			color5	= *(bP);

   419 			color6	= *(bP + 1);

   420 			colorS2 = *(bP + 2);

   421 

   422 			color1	= *(bP + Nextline - 1);

   423 			color2	= *(bP + Nextline);

   424 			color3	= *(bP + Nextline + 1);

   425 			colorS1 = *(bP + Nextline + 2);

   426 

   427 			colorA0 = *(bP + Nextline + Nextline - 1);

   428 			colorA1 = *(bP + Nextline + Nextline);

   429 			colorA2 = *(bP + Nextline + Nextline + 1);

   430 			colorA3 = *(bP + Nextline + Nextline + 2);

   431 

   432 			//--------------------------------------

   433 			if (color2 == color6 && color5 != color3)

   434 			{

   435 				product2b = product1b = color2;

   436 			}

   437 			else if (color5 == color3 && color2 != color6)

   438 			{

   439 				product2b = product1b = color5;

   440 			}

   441 			else if (color5 == color3 && color2 == color6)

   442 			{

   443 				register int r = 0;

   444 

   445 				r += GetResult(color6, color5, color1, colorA1);

   446 				r += GetResult(color6, color5, color4, colorB1);

   447 				r += GetResult(color6, color5, colorA2, colorS1);

   448 				r += GetResult(color6, color5, colorB2, colorS2);

   449 

   450 				if (r > 0)

   451 					product2b = product1b = color6;

   452 				else if (r < 0)

   453 					product2b = product1b = color5;

   454 				else

   455 				{

   456 					product2b = product1b = INTERPOLATE(color5, color6);

   457 				}

   458 			}

   459 			else

   460 			{

   461 				if (color6 == color3 && color3 == colorA1

   462 				    && color2 != colorA2 && color3 != colorA0)

   463 					product2b =

   464 					    Q_INTERPOLATE(color3, color3, color3, color2);

   465 				else if (color5 == color2 && color2 == colorA2

   466 				         && colorA1 != color3 && color2 != colorA3)

   467 					product2b =

   468 					    Q_INTERPOLATE(color2, color2, color2, color3);

   469 				else

   470 					product2b = INTERPOLATE(color2, color3);

   471 

   472 				if (color6 == color3 && color6 == colorB1

   473 				    && color5 != colorB2 && color6 != colorB0)

   474 					product1b =

   475 					    Q_INTERPOLATE(color6, color6, color6, color5);

   476 				else if (color5 == color2 && color5 == colorB2

   477 				         && colorB1 != color6 && color5 != colorB3)

   478 					product1b =

   479 					    Q_INTERPOLATE(color6, color5, color5, color5);

   480 				else

   481 					product1b = INTERPOLATE(color5, color6);

   482 			}

   483 

   484 			if (color5 == color3 && color2 != color6 && color4 == color5

   485 			    && color5 != colorA2)

   486 				product2a = INTERPOLATE(color2, color5);

   487 			else

   488 				if (color5 == color1 && color6 == color5

   489 				    && color4 != color2 && color5 != colorA0)

   490 					product2a = INTERPOLATE(color2, color5);

   491 				else

   492 					product2a = color2;

   493 

   494 			if (color2 == color6 && color5 != color3 && color1 == color2

   495 			    && color2 != colorB2)

   496 				product1a = INTERPOLATE(color2, color5);

   497 			else

   498 				if (color4 == color2 && color3 == color2

   499 				    && color1 != color5 && color2 != colorB0)

   500 					product1a = INTERPOLATE(color2, color5);

   501 				else

   502 					product1a = color5;

   503 			*(dP)	  = product1a;

   504 			*(dP + 1) = product1b;

   505 			*(dP + (dstPitch >> 2))		= product2a;

   506 			*(dP + (dstPitch >> 2) + 1) = product2b;

   507 

   508 			bP += inc_bP;

   509 			dP += 2;

   510 		}                   // end of for ( finish= width etc..)

   511 

   512 		srcPtr += srcPitch;

   513 		dstPtr += dstPitch << 1;

   514 		//        deltaPtr += srcPitch;

   515 	}               // endof: for (; height; height--)

   516 }

   517 

   518 void SuperEagle(u8 *srcPtr, u32 srcPitch, u8 *deltaPtr,

   519                 u8 *dstPtr, u32 dstPitch, int width, int height)

   520 {

   521 	u8 * dP;

   522 	u16 *bP;

   523 	u16 *xP;

   524 	u32	 inc_bP;

   525 

   526 #ifdef MMX

   527 	if (cpu_mmx)

   528 	{

   529 		for (; height; height--)

   530 		{

   531 			_2xSaISuperEagleLine(srcPtr, deltaPtr, srcPitch, width,

   532 			                     dstPtr, dstPitch);

   533 			srcPtr	 += srcPitch;

   534 			dstPtr	 += dstPitch * 2;

   535 			deltaPtr += srcPitch;

   536 		}

   537 	}

   538 	else

   539 #endif

   540 	{

   541 		inc_bP = 1;

   542 

   543 		u32 Nextline = srcPitch >> 1;

   544 

   545 		for (; height; height--)

   546 		{

   547 			bP = (u16 *) srcPtr;

   548 			xP = (u16 *) deltaPtr;

   549 			dP = dstPtr;

   550 			for (u32 finish = width; finish; finish -= inc_bP)

   551 			{

   552 				u32 color4, color5, color6;

   553 				u32 color1, color2, color3;

   554 				u32 colorA1, colorA2, colorB1, colorB2, colorS1, colorS2;

   555 				u32 product1a, product1b, product2a, product2b;

   556 

   557 				colorB1 = *(bP - Nextline);

   558 				colorB2 = *(bP - Nextline + 1);

   559 

   560 				color4	= *(bP - 1);

   561 				color5	= *(bP);

   562 				color6	= *(bP + 1);

   563 				colorS2 = *(bP + 2);

   564 

   565 				color1	= *(bP + Nextline - 1);

   566 				color2	= *(bP + Nextline);

   567 				color3	= *(bP + Nextline + 1);

   568 				colorS1 = *(bP + Nextline + 2);

   569 

   570 				colorA1 = *(bP + Nextline + Nextline);

   571 				colorA2 = *(bP + Nextline + Nextline + 1);

   572 

   573 				// --------------------------------------

   574 				if (color2 == color6 && color5 != color3)

   575 				{

   576 					product1b = product2a = color2;

   577 					if ((color1 == color2) || (color6 == colorB2))

   578 					{

   579 						product1a = INTERPOLATE(color2, color5);

   580 						product1a = INTERPOLATE(color2, product1a);

   581 						//                       product1a = color2;

   582 					}

   583 					else

   584 					{

   585 						product1a = INTERPOLATE(color5, color6);

   586 					}

   587 

   588 					if ((color6 == colorS2) || (color2 == colorA1))

   589 					{

   590 						product2b = INTERPOLATE(color2, color3);

   591 						product2b = INTERPOLATE(color2, product2b);

   592 						//                       product2b = color2;

   593 					}

   594 					else

   595 					{

   596 						product2b = INTERPOLATE(color2, color3);

   597 					}

   598 				}

   599 				else if (color5 == color3 && color2 != color6)

   600 				{

   601 					product2b = product1a = color5;

   602 

   603 					if ((colorB1 == color5) || (color3 == colorS1))

   604 					{

   605 						product1b = INTERPOLATE(color5, color6);

   606 						product1b = INTERPOLATE(color5, product1b);

   607 						//                       product1b = color5;

   608 					}

   609 					else

   610 					{

   611 						product1b = INTERPOLATE(color5, color6);

   612 					}

   613 

   614 					if ((color3 == colorA2) || (color4 == color5))

   615 					{

   616 						product2a = INTERPOLATE(color5, color2);

   617 						product2a = INTERPOLATE(color5, product2a);

   618 						//                       product2a = color5;

   619 					}

   620 					else

   621 					{

   622 						product2a = INTERPOLATE(color2, color3);

   623 					}

   624 				}

   625 				else if (color5 == color3 && color2 == color6)

   626 				{

   627 					register int r = 0;

   628 

   629 					r += GetResult(color6, color5, color1, colorA1);

   630 					r += GetResult(color6, color5, color4, colorB1);

   631 					r += GetResult(color6, color5, colorA2, colorS1);

   632 					r += GetResult(color6, color5, colorB2, colorS2);

   633 

   634 					if (r > 0)

   635 					{

   636 						product1b = product2a = color2;

   637 						product1a = product2b = INTERPOLATE(color5, color6);

   638 					}

   639 					else if (r < 0)

   640 					{

   641 						product2b = product1a = color5;

   642 						product1b = product2a = INTERPOLATE(color5, color6);

   643 					}

   644 					else

   645 					{

   646 						product2b = product1a = color5;

   647 						product1b = product2a = color2;

   648 					}

   649 				}

   650 				else

   651 				{

   652 					product2b = product1a = INTERPOLATE(color2, color6);

   653 					product2b =

   654 					    Q_INTERPOLATE(color3, color3, color3, product2b);

   655 					product1a =

   656 					    Q_INTERPOLATE(color5, color5, color5, product1a);

   657 

   658 					product2a = product1b = INTERPOLATE(color5, color3);

   659 					product2a =

   660 					    Q_INTERPOLATE(color2, color2, color2, product2a);

   661 					product1b =

   662 					    Q_INTERPOLATE(color6, color6, color6, product1b);

   663 

   664 					//                    product1a = color5;

   665 					//                    product1b = color6;

   666 					//                    product2a = color2;

   667 					//                    product2b = color3;

   668 				}

   669 #ifdef WORDS_BIGENDIAN

   670 				product1a = (product1a << 16) | product1b;

   671 				product2a = (product2a << 16) | product2b;

   672 #else

   673 				product1a = product1a | (product1b << 16);

   674 				product2a = product2a | (product2b << 16);

   675 #endif

   676 

   677 				*((u32 *) dP) = product1a;

   678 				*((u32 *) (dP + dstPitch)) = product2a;

   679 				*xP = color5;

   680 

   681 				bP += inc_bP;

   682 				xP += inc_bP;

   683 				dP += sizeof(u32);

   684 			}           // end of for ( finish= width etc..)

   685 

   686 			srcPtr	 += srcPitch;

   687 			dstPtr	 += dstPitch << 1;

   688 			deltaPtr += srcPitch;

   689 		}               // endof: for (height; height; height--)

   690 	}

   691 }

   692 

   693 void SuperEagle32(u8 *srcPtr, u32 srcPitch, u8 *deltaPtr,

   694                   u8 *dstPtr, u32 dstPitch, int width, int height)

   695 {

   696 	u32 *dP;

   697 	u32 *bP;

   698 	u32 *xP;

   699 	u32	 inc_bP;

   700 

   701 	inc_bP = 1;

   702 

   703 	u32 Nextline = srcPitch >> 2;

   704 

   705 	for (; height; height--)

   706 	{

   707 		bP = (u32 *) srcPtr;

   708 		xP = (u32 *) deltaPtr;

   709 		dP = (u32 *)dstPtr;

   710 		for (u32 finish = width; finish; finish -= inc_bP)

   711 		{

   712 			u32 color4, color5, color6;

   713 			u32 color1, color2, color3;

   714 			u32 colorA1, colorA2, colorB1, colorB2, colorS1, colorS2;

   715 			u32 product1a, product1b, product2a, product2b;

   716 

   717 			colorB1 = *(bP - Nextline);

   718 			colorB2 = *(bP - Nextline + 1);

   719 

   720 			color4	= *(bP - 1);

   721 			color5	= *(bP);

   722 			color6	= *(bP + 1);

   723 			colorS2 = *(bP + 2);

   724 

   725 			color1	= *(bP + Nextline - 1);

   726 			color2	= *(bP + Nextline);

   727 			color3	= *(bP + Nextline + 1);

   728 			colorS1 = *(bP + Nextline + 2);

   729 

   730 			colorA1 = *(bP + Nextline + Nextline);

   731 			colorA2 = *(bP + Nextline + Nextline + 1);

   732 

   733 			// --------------------------------------

   734 			if (color2 == color6 && color5 != color3)

   735 			{

   736 				product1b = product2a = color2;

   737 				if ((color1 == color2) || (color6 == colorB2))

   738 				{

   739 					product1a = INTERPOLATE(color2, color5);

   740 					product1a = INTERPOLATE(color2, product1a);

   741 					//                       product1a = color2;

   742 				}

   743 				else

   744 				{

   745 					product1a = INTERPOLATE(color5, color6);

   746 				}

   747 

   748 				if ((color6 == colorS2) || (color2 == colorA1))

   749 				{

   750 					product2b = INTERPOLATE(color2, color3);

   751 					product2b = INTERPOLATE(color2, product2b);

   752 					//                       product2b = color2;

   753 				}

   754 				else

   755 				{

   756 					product2b = INTERPOLATE(color2, color3);

   757 				}

   758 			}

   759 			else if (color5 == color3 && color2 != color6)

   760 			{

   761 				product2b = product1a = color5;

   762 

   763 				if ((colorB1 == color5) || (color3 == colorS1))

   764 				{

   765 					product1b = INTERPOLATE(color5, color6);

   766 					product1b = INTERPOLATE(color5, product1b);

   767 					//                       product1b = color5;

   768 				}

   769 				else

   770 				{

   771 					product1b = INTERPOLATE(color5, color6);

   772 				}

   773 

   774 				if ((color3 == colorA2) || (color4 == color5))

   775 				{

   776 					product2a = INTERPOLATE(color5, color2);

   777 					product2a = INTERPOLATE(color5, product2a);

   778 					//                       product2a = color5;

   779 				}

   780 				else

   781 				{

   782 					product2a = INTERPOLATE(color2, color3);

   783 				}

   784 			}

   785 			else if (color5 == color3 && color2 == color6)

   786 			{

   787 				register int r = 0;

   788 

   789 				r += GetResult(color6, color5, color1, colorA1);

   790 				r += GetResult(color6, color5, color4, colorB1);

   791 				r += GetResult(color6, color5, colorA2, colorS1);

   792 				r += GetResult(color6, color5, colorB2, colorS2);

   793 

   794 				if (r > 0)

   795 				{

   796 					product1b = product2a = color2;

   797 					product1a = product2b = INTERPOLATE(color5, color6);

   798 				}

   799 				else if (r < 0)

   800 				{

   801 					product2b = product1a = color5;

   802 					product1b = product2a = INTERPOLATE(color5, color6);

   803 				}

   804 				else

   805 				{

   806 					product2b = product1a = color5;

   807 					product1b = product2a = color2;

   808 				}

   809 			}

   810 			else

   811 			{

   812 				product2b = product1a = INTERPOLATE(color2, color6);

   813 				product2b =

   814 				    Q_INTERPOLATE(color3, color3, color3, product2b);

   815 				product1a =

   816 				    Q_INTERPOLATE(color5, color5, color5, product1a);

   817 

   818 				product2a = product1b = INTERPOLATE(color5, color3);

   819 				product2a =

   820 				    Q_INTERPOLATE(color2, color2, color2, product2a);

   821 				product1b =

   822 				    Q_INTERPOLATE(color6, color6, color6, product1b);

   823 

   824 				//                    product1a = color5;

   825 				//                    product1b = color6;

   826 				//                    product2a = color2;

   827 				//                    product2b = color3;

   828 			}

   829 			*(dP)	  = product1a;

   830 			*(dP + 1) = product1b;

   831 			*(dP + (dstPitch >> 2))		= product2a;

   832 			*(dP + (dstPitch >> 2) + 1) = product2b;

   833 			*xP = color5;

   834 

   835 			bP += inc_bP;

   836 			xP += inc_bP;

   837 			dP += 2;

   838 		}             // end of for ( finish= width etc..)

   839 

   840 		srcPtr	 += srcPitch;

   841 		dstPtr	 += dstPitch << 1;

   842 		deltaPtr += srcPitch;

   843 	}                 // endof: for (height; height; height--)

   844 }

   845 

   846 void _2xSaI(u8 *srcPtr, u32 srcPitch, u8 *deltaPtr,

   847             u8 *dstPtr, u32 dstPitch, int width, int height)

   848 {

   849 	u8 * dP;

   850 	u16 *bP;

   851 	u32	 inc_bP;

   852 

   853 #ifdef MMX

   854 	if (cpu_mmx)

   855 	{

   856 		for (; height; height -= 1)

   857 		{

   858 			_2xSaILine(srcPtr, deltaPtr, srcPitch, width, dstPtr, dstPitch);

   859 			srcPtr	 += srcPitch;

   860 			dstPtr	 += dstPitch * 2;

   861 			deltaPtr += srcPitch;

   862 		}

   863 	}

   864 	else

   865 #endif

   866 	{

   867 		inc_bP = 1;

   868 

   869 		u32 Nextline = srcPitch >> 1;

   870 

   871 		for (; height; height--)

   872 		{

   873 			bP = (u16 *) srcPtr;

   874 			dP = dstPtr;

   875 

   876 			for (u32 finish = width; finish; finish -= inc_bP)

   877 			{

   878 				register u32 colorA, colorB;

   879 				u32 colorC, colorD,

   880 				    colorE, colorF, colorG, colorH,

   881 				    colorI, colorJ, colorK, colorL,

   882 

   883 				    colorM, colorN, colorO, colorP;

   884 				u32 product, product1, product2;

   885 

   886 				//---------------------------------------

   887 				// Map of the pixels:                    I|E F|J

   888 				//                                       G|A B|K

   889 				//                                       H|C D|L

   890 				//                                       M|N O|P

   891 				colorI = *(bP - Nextline - 1);

   892 				colorE = *(bP - Nextline);

   893 				colorF = *(bP - Nextline + 1);

   894 				colorJ = *(bP - Nextline + 2);

   895 

   896 				colorG = *(bP - 1);

   897 				colorA = *(bP);

   898 				colorB = *(bP + 1);

   899 				colorK = *(bP + 2);

   900 

   901 				colorH = *(bP + Nextline - 1);

   902 				colorC = *(bP + Nextline);

   903 				colorD = *(bP + Nextline + 1);

   904 				colorL = *(bP + Nextline + 2);

   905 

   906 				colorM = *(bP + Nextline + Nextline - 1);

   907 				colorN = *(bP + Nextline + Nextline);

   908 				colorO = *(bP + Nextline + Nextline + 1);

   909 				colorP = *(bP + Nextline + Nextline + 2);

   910 

   911 				if ((colorA == colorD) && (colorB != colorC))

   912 				{

   913 					if (((colorA == colorE) && (colorB == colorL)) ||

   914 					    ((colorA == colorC) && (colorA == colorF)

   915 					     && (colorB != colorE) && (colorB == colorJ)))

   916 					{

   917 						product = colorA;

   918 					}

   919 					else

   920 					{

   921 						product = INTERPOLATE(colorA, colorB);

   922 					}

   923 

   924 					if (((colorA == colorG) && (colorC == colorO)) ||

   925 					    ((colorA == colorB) && (colorA == colorH)

   926 					     && (colorG != colorC) && (colorC == colorM)))

   927 					{

   928 						product1 = colorA;

   929 					}

   930 					else

   931 					{

   932 						product1 = INTERPOLATE(colorA, colorC);

   933 					}

   934 					product2 = colorA;

   935 				}

   936 				else if ((colorB == colorC) && (colorA != colorD))

   937 				{

   938 					if (((colorB == colorF) && (colorA == colorH)) ||

   939 					    ((colorB == colorE) && (colorB == colorD)

   940 					     && (colorA != colorF) && (colorA == colorI)))

   941 					{

   942 						product = colorB;

   943 					}

   944 					else

   945 					{

   946 						product = INTERPOLATE(colorA, colorB);

   947 					}

   948 

   949 					if (((colorC == colorH) && (colorA == colorF)) ||

   950 					    ((colorC == colorG) && (colorC == colorD)

   951 					     && (colorA != colorH) && (colorA == colorI)))

   952 					{

   953 						product1 = colorC;

   954 					}

   955 					else

   956 					{

   957 						product1 = INTERPOLATE(colorA, colorC);

   958 					}

   959 					product2 = colorB;

   960 				}

   961 				else if ((colorA == colorD) && (colorB == colorC))

   962 				{

   963 					if (colorA == colorB)

   964 					{

   965 						product	 = colorA;

   966 						product1 = colorA;

   967 						product2 = colorA;

   968 					}

   969 					else

   970 					{

   971 						register int r = 0;

   972 

   973 						product1 = INTERPOLATE(colorA, colorC);

   974 						product	 = INTERPOLATE(colorA, colorB);

   975 

   976 						r +=

   977 						    GetResult1(colorA, colorB, colorG, colorE,

   978 						               colorI);

   979 						r +=

   980 						    GetResult2(colorB, colorA, colorK, colorF,

   981 						               colorJ);

   982 						r +=

   983 						    GetResult2(colorB, colorA, colorH, colorN,

   984 						               colorM);

   985 						r +=

   986 						    GetResult1(colorA, colorB, colorL, colorO,

   987 						               colorP);

   988 

   989 						if (r > 0)

   990 							product2 = colorA;

   991 						else if (r < 0)

   992 							product2 = colorB;

   993 						else

   994 						{

   995 							product2 =

   996 							    Q_INTERPOLATE(colorA, colorB, colorC,

   997 							                  colorD);

   998 						}

   999 					}

  1000 				}

  1001 				else

  1002 				{

  1003 					product2 = Q_INTERPOLATE(colorA, colorB, colorC, colorD);

  1004 

  1005 					if ((colorA == colorC) && (colorA == colorF)

  1006 					    && (colorB != colorE) && (colorB == colorJ))

  1007 					{

  1008 						product = colorA;

  1009 					}

  1010 					else if ((colorB == colorE) && (colorB == colorD)

  1011 					         && (colorA != colorF) && (colorA == colorI))

  1012 					{

  1013 						product = colorB;

  1014 					}

  1015 					else

  1016 					{

  1017 						product = INTERPOLATE(colorA, colorB);

  1018 					}

  1019 

  1020 					if ((colorA == colorB) && (colorA == colorH)

  1021 					    && (colorG != colorC) && (colorC == colorM))

  1022 					{

  1023 						product1 = colorA;

  1024 					}

  1025 					else if ((colorC == colorG) && (colorC == colorD)

  1026 					         && (colorA != colorH) && (colorA == colorI))

  1027 					{

  1028 						product1 = colorC;

  1029 					}

  1030 					else

  1031 					{

  1032 						product1 = INTERPOLATE(colorA, colorC);

  1033 					}

  1034 				}

  1035 

  1036 #ifdef WORDS_BIGENDIAN

  1037 				product	 = (colorA << 16) | product;

  1038 				product1 = (product1 << 16) | product2;

  1039 #else

  1040 				product	 = colorA | (product << 16);

  1041 				product1 = product1 | (product2 << 16);

  1042 #endif

  1043 				*((s32 *) dP) = product;

  1044 				*((u32 *) (dP + dstPitch)) = product1;

  1045 

  1046 				bP += inc_bP;

  1047 				dP += sizeof(u32);

  1048 			}           // end of for ( finish= width etc..)

  1049 

  1050 			srcPtr	 += srcPitch;

  1051 			dstPtr	 += dstPitch << 1;

  1052 			deltaPtr += srcPitch;

  1053 		}               // endof: for (height; height; height--)

  1054 	}

  1055 }

  1056 

  1057 void _2xSaI32(u8 *srcPtr, u32 srcPitch, u8 * /* deltaPtr */,

  1058               u8 *dstPtr, u32 dstPitch, int width, int height)

  1059 {

  1060 	u32 *dP;

  1061 	u32 *bP;

  1062 	u32	 inc_bP = 1;

  1063 

  1064 	u32 Nextline = srcPitch >> 2;

  1065 

  1066 	for (; height; height--)

  1067 	{

  1068 		bP = (u32 *) srcPtr;

  1069 		dP = (u32 *) dstPtr;

  1070 

  1071 		for (u32 finish = width; finish; finish -= inc_bP)

  1072 		{

  1073 			register u32 colorA, colorB;

  1074 			u32 colorC, colorD,

  1075 			    colorE, colorF, colorG, colorH,

  1076 			    colorI, colorJ, colorK, colorL,

  1077 

  1078 			    colorM, colorN, colorO, colorP;

  1079 			u32 product, product1, product2;

  1080 

  1081 			//---------------------------------------

  1082 			// Map of the pixels:                    I|E F|J

  1083 			//                                       G|A B|K

  1084 			//                                       H|C D|L

  1085 			//                                       M|N O|P

  1086 			colorI = *(bP - Nextline - 1);

  1087 			colorE = *(bP - Nextline);

  1088 			colorF = *(bP - Nextline + 1);

  1089 			colorJ = *(bP - Nextline + 2);

  1090 

  1091 			colorG = *(bP - 1);

  1092 			colorA = *(bP);

  1093 			colorB = *(bP + 1);

  1094 			colorK = *(bP + 2);

  1095 

  1096 			colorH = *(bP + Nextline - 1);

  1097 			colorC = *(bP + Nextline);

  1098 			colorD = *(bP + Nextline + 1);

  1099 			colorL = *(bP + Nextline + 2);

  1100 

  1101 			colorM = *(bP + Nextline + Nextline - 1);

  1102 			colorN = *(bP + Nextline + Nextline);

  1103 			colorO = *(bP + Nextline + Nextline + 1);

  1104 			colorP = *(bP + Nextline + Nextline + 2);

  1105 

  1106 			if ((colorA == colorD) && (colorB != colorC))

  1107 			{

  1108 				if (((colorA == colorE) && (colorB == colorL)) ||

  1109 				    ((colorA == colorC) && (colorA == colorF)

  1110 				     && (colorB != colorE) && (colorB == colorJ)))

  1111 				{

  1112 					product = colorA;

  1113 				}

  1114 				else

  1115 				{

  1116 					product = INTERPOLATE(colorA, colorB);

  1117 				}

  1118 

  1119 				if (((colorA == colorG) && (colorC == colorO)) ||

  1120 				    ((colorA == colorB) && (colorA == colorH)

  1121 				     && (colorG != colorC) && (colorC == colorM)))

  1122 				{

  1123 					product1 = colorA;

  1124 				}

  1125 				else

  1126 				{

  1127 					product1 = INTERPOLATE(colorA, colorC);

  1128 				}

  1129 				product2 = colorA;

  1130 			}

  1131 			else if ((colorB == colorC) && (colorA != colorD))

  1132 			{

  1133 				if (((colorB == colorF) && (colorA == colorH)) ||

  1134 				    ((colorB == colorE) && (colorB == colorD)

  1135 				     && (colorA != colorF) && (colorA == colorI)))

  1136 				{

  1137 					product = colorB;

  1138 				}

  1139 				else

  1140 				{

  1141 					product = INTERPOLATE(colorA, colorB);

  1142 				}

  1143 

  1144 				if (((colorC == colorH) && (colorA == colorF)) ||

  1145 				    ((colorC == colorG) && (colorC == colorD)

  1146 				     && (colorA != colorH) && (colorA == colorI)))

  1147 				{

  1148 					product1 = colorC;

  1149 				}

  1150 				else

  1151 				{

  1152 					product1 = INTERPOLATE(colorA, colorC);

  1153 				}

  1154 				product2 = colorB;

  1155 			}

  1156 			else if ((colorA == colorD) && (colorB == colorC))

  1157 			{

  1158 				if (colorA == colorB)

  1159 				{

  1160 					product	 = colorA;

  1161 					product1 = colorA;

  1162 					product2 = colorA;

  1163 				}

  1164 				else

  1165 				{

  1166 					register int r = 0;

  1167 

  1168 					product1 = INTERPOLATE(colorA, colorC);

  1169 					product	 = INTERPOLATE(colorA, colorB);

  1170 

  1171 					r +=

  1172 					    GetResult1(colorA, colorB, colorG, colorE,

  1173 					               colorI);

  1174 					r +=

  1175 					    GetResult2(colorB, colorA, colorK, colorF,

  1176 					               colorJ);

  1177 					r +=

  1178 					    GetResult2(colorB, colorA, colorH, colorN,

  1179 					               colorM);

  1180 					r +=

  1181 					    GetResult1(colorA, colorB, colorL, colorO,

  1182 					               colorP);

  1183 

  1184 					if (r > 0)

  1185 						product2 = colorA;

  1186 					else if (r < 0)

  1187 						product2 = colorB;

  1188 					else

  1189 					{

  1190 						product2 =

  1191 						    Q_INTERPOLATE(colorA, colorB, colorC,

  1192 						                  colorD);

  1193 					}

  1194 				}

  1195 			}

  1196 			else

  1197 			{

  1198 				product2 = Q_INTERPOLATE(colorA, colorB, colorC, colorD);

  1199 

  1200 				if ((colorA == colorC) && (colorA == colorF)

  1201 				    && (colorB != colorE) && (colorB == colorJ))

  1202 				{

  1203 					product = colorA;

  1204 				}

  1205 				else if ((colorB == colorE) && (colorB == colorD)

  1206 				         && (colorA != colorF) && (colorA == colorI))

  1207 				{

  1208 					product = colorB;

  1209 				}

  1210 				else

  1211 				{

  1212 					product = INTERPOLATE(colorA, colorB);

  1213 				}

  1214 

  1215 				if ((colorA == colorB) && (colorA == colorH)

  1216 				    && (colorG != colorC) && (colorC == colorM))

  1217 				{

  1218 					product1 = colorA;

  1219 				}

  1220 				else if ((colorC == colorG) && (colorC == colorD)

  1221 				         && (colorA != colorH) && (colorA == colorI))

  1222 				{

  1223 					product1 = colorC;

  1224 				}

  1225 				else

  1226 				{

  1227 					product1 = INTERPOLATE(colorA, colorC);

  1228 				}

  1229 			}

  1230 			*(dP)	  = colorA;

  1231 			*(dP + 1) = product;

  1232 			*(dP + (dstPitch >> 2))		= product1;

  1233 			*(dP + (dstPitch >> 2) + 1) = product2;

  1234 

  1235 			bP += inc_bP;

  1236 			dP += 2;

  1237 		}             // end of for ( finish= width etc..)

  1238 

  1239 		srcPtr += srcPitch;

  1240 		dstPtr += dstPitch << 1;

  1241 		//    deltaPtr += srcPitch;

  1242 	}                 // endof: for (height; height; height--)

  1243 }

  1244 

  1245 static u32 Bilinear(u32 A, u32 B, u32 x)

  1246 {

  1247 	unsigned long areaA, areaB;

  1248 	unsigned long result;

  1249 

  1250 	if (A == B)

  1251 		return A;

  1252 

  1253 	areaB = (x >> 11) & 0x1f;   // reduce 16 bit fraction to 5 bits

  1254 	areaA = 0x20 - areaB;

  1255 

  1256 	A = (A & redblueMask) | ((A & greenMask) << 16);

  1257 	B = (B & redblueMask) | ((B & greenMask) << 16);

  1258 

  1259 	result = ((areaA * A) + (areaB * B)) >> 5;

  1260 

  1261 	return (result & redblueMask) | ((result >> 16) & greenMask);

  1262 }

  1263 

  1264 static u32 Bilinear4(u32 A, u32 B, u32 C, u32 D, u32 x,

  1265                      u32 y)

  1266 {

  1267 	unsigned long areaA, areaB, areaC, areaD;

  1268 	unsigned long result, xy;

  1269 

  1270 	x  = (x >> 11) & 0x1f;

  1271 	y  = (y >> 11) & 0x1f;

  1272 	xy = (x * y) >> 5;

  1273 

  1274 	A = (A & redblueMask) | ((A & greenMask) << 16);

  1275 	B = (B & redblueMask) | ((B & greenMask) << 16);

  1276 	C = (C & redblueMask) | ((C & greenMask) << 16);

  1277 	D = (D & redblueMask) | ((D & greenMask) << 16);

  1278 

  1279 	areaA = 0x20 + xy - x - y;

  1280 	areaB = x - xy;

  1281 	areaC = y - xy;

  1282 	areaD = xy;

  1283 

  1284 	result = ((areaA * A) + (areaB * B) + (areaC * C) + (areaD * D)) >> 5;

  1285 

  1286 	return (result & redblueMask) | ((result >> 16) & greenMask);

  1287 }

  1288 

  1289 void Scale_2xSaI(u8 *srcPtr, u32 srcPitch, u8 * /* deltaPtr */,

  1290                  u8 *dstPtr, u32 dstPitch,

  1291                  u32 dstWidth, u32 dstHeight, int width, int height)

  1292 {

  1293 	u8 * dP;

  1294 	u16 *bP;

  1295 

  1296 	u32 w;

  1297 	u32 h;

  1298 	u32 dw;

  1299 	u32 dh;

  1300 	u32 hfinish;

  1301 	u32 wfinish;

  1302 

  1303 	u32 Nextline = srcPitch >> 1;

  1304 

  1305 	wfinish = (width - 1) << 16; // convert to fixed point

  1306 	dw		= wfinish / (dstWidth - 1);

  1307 	hfinish = (height - 1) << 16; // convert to fixed point

  1308 	dh		= hfinish / (dstHeight - 1);

  1309 

  1310 	for (h = 0; h < hfinish; h += dh)

  1311 	{

  1312 		u32 y1, y2;

  1313 

  1314 		y1 = h & 0xffff; // fraction part of fixed point

  1315 		bP = (u16 *) (srcPtr + ((h >> 16) * srcPitch));

  1316 		dP = dstPtr;

  1317 		y2 = 0x10000 - y1;

  1318 

  1319 		w = 0;

  1320 

  1321 		for (; w < wfinish; )

  1322 		{

  1323 			u32 A, B, C, D;

  1324 			u32 E, F, G, H;

  1325 			u32 I, J, K, L;

  1326 			u32 x1, x2, a1, f1, f2;

  1327 			u32 position, product1;

  1328 

  1329 			position = w >> 16;

  1330 			A		 = bP[position]; // current pixel

  1331 			B		 = bP[position + 1]; // next pixel

  1332 			C		 = bP[position + Nextline];

  1333 			D		 = bP[position + Nextline + 1];

  1334 			E		 = bP[position - Nextline];

  1335 			F		 = bP[position - Nextline + 1];

  1336 			G		 = bP[position - 1];

  1337 			H		 = bP[position + Nextline - 1];

  1338 			I		 = bP[position + 2];

  1339 			J		 = bP[position + Nextline + 2];

  1340 			K		 = bP[position + Nextline + Nextline];

  1341 			L		 = bP[position + Nextline + Nextline + 1];

  1342 

  1343 			x1 = w & 0xffff; // fraction part of fixed point

  1344 			x2 = 0x10000 - x1;

  1345 

  1346 			/*0*/

  1347 			if (A == B && C == D && A == C)

  1348 				product1 = A;

  1349 			else /*1*/ if (A == D && B != C)

  1350 			{

  1351 				f1 = (x1 >> 1) + (0x10000 >> 2);

  1352 				f2 = (y1 >> 1) + (0x10000 >> 2);

  1353 				if (y1 <= f1 && A == J && A != E) // close to B

  1354 				{

  1355 					a1		 = f1 - y1;

  1356 					product1 = Bilinear(A, B, a1);

  1357 				}

  1358 				else if (y1 >= f1 && A == G && A != L)  // close to C

  1359 				{

  1360 					a1		 = y1 - f1;

  1361 					product1 = Bilinear(A, C, a1);

  1362 				}

  1363 				else if (x1 >= f2 && A == E && A != J) // close to B

  1364 				{

  1365 					a1		 = x1 - f2;

  1366 					product1 = Bilinear(A, B, a1);

  1367 				}

  1368 				else if (x1 <= f2 && A == L && A != G) // close to C

  1369 				{

  1370 					a1		 = f2 - x1;

  1371 					product1 = Bilinear(A, C, a1);

  1372 				}

  1373 				else if (y1 >= x1) // close to C

  1374 				{

  1375 					a1		 = y1 - x1;

  1376 					product1 = Bilinear(A, C, a1);

  1377 				}

  1378 				else if (y1 <= x1) // close to B

  1379 				{

  1380 					a1		 = x1 - y1;

  1381 					product1 = Bilinear(A, B, a1);

  1382 				}

  1383 			}

  1384 			else

  1385 				/*2*/

  1386 				if (B == C && A != D)

  1387 				{

  1388 					f1 = (x1 >> 1) + (0x10000 >> 2);

  1389 					f2 = (y1 >> 1) + (0x10000 >> 2);

  1390 					if (y2 >= f1 && B == H && B != F) // close to A

  1391 					{

  1392 						a1		 = y2 - f1;

  1393 						product1 = Bilinear(B, A, a1);

  1394 					}

  1395 					else if (y2 <= f1 && B == I && B != K) // close to D

  1396 					{

  1397 						a1		 = f1 - y2;

  1398 						product1 = Bilinear(B, D, a1);

  1399 					}

  1400 					else if (x2 >= f2 && B == F && B != H) // close to A

  1401 					{

  1402 						a1		 = x2 - f2;

  1403 						product1 = Bilinear(B, A, a1);

  1404 					}

  1405 					else if (x2 <= f2 && B == K && B != I) // close to D

  1406 					{

  1407 						a1		 = f2 - x2;

  1408 						product1 = Bilinear(B, D, a1);

  1409 					}

  1410 					else if (y2 >= x1) // close to A

  1411 					{

  1412 						a1		 = y2 - x1;

  1413 						product1 = Bilinear(B, A, a1);

  1414 					}

  1415 					else if (y2 <= x1) // close to D

  1416 					{

  1417 						a1		 = x1 - y2;

  1418 						product1 = Bilinear(B, D, a1);

  1419 					}

  1420 				}

  1421 				/*3*/

  1422 				else

  1423 				{

  1424 					product1 = Bilinear4(A, B, C, D, x1, y1);

  1425 				}

  1426 

  1427 			//end First Pixel

  1428 			*(u32 *) dP = product1;

  1429 			dP += 2;

  1430 			w  += dw;

  1431 		}

  1432 		dstPtr += dstPitch;

  1433 	}

  1434 }
author	Robert McIntyre <rlm@mit.edu>
date	Sat, 03 Mar 2012 10:31:27 -0600
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