Mercurial > vba-linux

     1 #include "../Port.h"

     2 

     3 void Simple2x16(u8 *srcPtr, u32 srcPitch, u8 * /* deltaPtr */,

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

     5 {

     6 	u8 *nextLine, *finish;

     7 

     8 	nextLine = dstPtr + dstPitch;

     9 

    10 	do

    11 	{

    12 		u32 *bP = (u32 *) srcPtr;

    13 		u32 *dP = (u32 *) dstPtr;

    14 		u32 *nL = (u32 *) nextLine;

    15 		u32	 currentPixel;

    16 

    17 		finish		 = (u8 *) bP + ((width + 2) << 1);

    18 		currentPixel = *bP++;

    19 

    20 		do

    21 		{

    22 #ifdef WORDS_BIGENDIAN

    23 			u32 color = currentPixel >> 16;

    24 #else

    25 			u32 color = currentPixel & 0xffff;

    26 #endif

    27 

    28 			color = color | (color << 16);

    29 

    30 			*(dP) = color;

    31 			*(nL) = color;

    32 

    33 #ifdef WORDS_BIGENDIAN

    34 			color = currentPixel & 0xffff;

    35 #else

    36 			color = currentPixel >> 16;

    37 #endif

    38 			color	  = color | (color << 16);

    39 			*(dP + 1) = color;

    40 			*(nL + 1) = color;

    41 

    42 			currentPixel = *bP++;

    43 

    44 			dP += 2;

    45 			nL += 2;

    46 		}

    47 		while ((u8 *) bP < finish);

    48 

    49 		srcPtr	 += srcPitch;

    50 		dstPtr	 += dstPitch << 1;

    51 		nextLine += dstPitch << 1;

    52 	}

    53 	while (--height);

    54 }

    55 

    56 void Simple2x32(u8 *srcPtr, u32 srcPitch, u8 * /* deltaPtr */,

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

    58 {

    59 	u8 *nextLine, *finish;

    60 

    61 	nextLine = dstPtr + dstPitch;

    62 

    63 	do

    64 	{

    65 		u32 *bP = (u32 *) srcPtr;

    66 		u32 *dP = (u32 *) dstPtr;

    67 		u32 *nL = (u32 *) nextLine;

    68 		u32	 currentPixel;

    69 

    70 		finish		 = (u8 *) bP + ((width + 1) << 2);

    71 		currentPixel = *bP++;

    72 

    73 		do

    74 		{

    75 			u32 color = currentPixel;

    76 

    77 			*(dP)	  = color;

    78 			*(dP + 1) = color;

    79 			*(nL)	  = color;

    80 			*(nL + 1) = color;

    81 

    82 			currentPixel = *bP++;

    83 

    84 			dP += 2;

    85 			nL += 2;

    86 		}

    87 		while ((u8 *) bP < finish);

    88 

    89 		srcPtr	 += srcPitch;

    90 		dstPtr	 += dstPitch << 1;

    91 		nextLine += dstPitch << 1;

    92 	}

    93 	while (--height);

    94 }

    95 

    96 #if 0

    97 // generic Simple Nx magnification filter

    98 template <int magnification, typename ColorType>

    99 void SimpleNx(u8 *srcPtr, u32 srcPitch, u8 * /* deltaPtr */,

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

   101 {

   102 	srcPitch = srcPitch / sizeof(ColorType) - width;

   103 	u32 dstNextP = dstPitch / sizeof(ColorType);

   104 	u32 dstNextL = (dstNextP - width) * magnification;  // skip to the next magnificated 'line'

   105 	dstNextP -= magnification;

   106 

   107 	u32 offset = (dstPitch + sizeof(ColorType)) * magnification - dstPitch;

   108 

   109 	ColorType *src = (ColorType *)srcPtr;

   110 	ColorType *dst = (ColorType *)dstPtr;

   111 

   112 	do // per src line

   113 	{

   114 		u8 *finishP = (u8 *)dst + offset;

   115 		for (int x = 0; x < width; ++x) // per pixel in line

   116 		{

   117 			ColorType  col	   = *src;

   118 			ColorType *dst2	   = dst;

   119 			u8 *	   finishM = (u8 *)(dst + magnification);

   120 			do // dst magnificated pixel

   121 			{

   122 				do

   123 				{

   124 					*dst2 = col;

   125 				}

   126 				while ((u8 *)++dst2 < finishM);

   127 				dst2	+= dstNextP;

   128 				finishM += dstPitch;

   129 			}

   130 			while ((u8 *)dst2 < finishP);

   131 

   132 			++src;

   133 			dst		+= magnification;

   134 			finishP += magnification * sizeof(ColorType);

   135 		}

   136 		src += srcPitch;

   137 		dst += dstNextL;

   138 	}

   139 	while (--height);

   140 }

   141 

   142 #else

   143 

   144 // generic Simple Nx magnification filter

   145 template <int magnification, typename ColorType>

   146 void SimpleNx(u8 *srcPtr, u32 srcPitch, u8 * /* deltaPtr */,

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

   148 {

   149 	srcPitch  = srcPitch / sizeof(ColorType) - width;

   150 	dstPitch /= sizeof(ColorType);

   151 	u32 dstBlank = (dstPitch - width) * magnification; // skip to the next magnificated 'line'

   152 	dstPitch -= magnification;

   153 

   154 	ColorType *src = (ColorType *)srcPtr;

   155 	ColorType *dst = (ColorType *)dstPtr;

   156 

   157 	do // per src line

   158 	{

   159 		for (int x = 0; x < width; ++x) // per pixel in src line

   160 		{

   161 			ColorType  col	= *src;

   162 			ColorType *dst2 = dst;

   163 			for (int dy = 0; dy < magnification; ++dy) // dst magnificated pixel

   164 			{

   165 				for (int dx = 0; dx < magnification; ++dx)

   166 				{

   167 					*dst2 = col;

   168 					++dst2;

   169 				}

   170 				dst2 += dstPitch;

   171 			}

   172 

   173 			++src;

   174 			dst += magnification;

   175 		}

   176 		src += srcPitch;

   177 		dst += dstBlank;

   178 	}

   179 	while (--height);

   180 }

   181 

   182 #endif

   183 

   184 typedef void (*SimpleNxFP)(u8 *, u32, u8 *, u8 *, u32, int, int);

   185 

   186 SimpleNxFP Simple3x16 = SimpleNx<3, u16>;

   187 SimpleNxFP Simple3x32 = SimpleNx<3, u32>;

   188 SimpleNxFP Simple4x16 = SimpleNx<4, u16>;

   189 SimpleNxFP Simple4x32 = SimpleNx<4, u32>;
author	Robert McIntyre <rlm@mit.edu>
date	Sat, 03 Mar 2012 10:31:27 -0600
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