Mercurial > vba-clojure

     1 #include "../Port.h"

     2 

     3 extern u32 RGB_LOW_BITS_MASK;

     4 

     5 void MotionBlur(u8 *srcPtr, u32 srcPitch, u8 *deltaPtr,

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

     7 {

     8 	u8 *nextLine, *finish;

     9 	u32 colorMask	 = ~(RGB_LOW_BITS_MASK | (RGB_LOW_BITS_MASK << 16));

    10 	u32 lowPixelMask = RGB_LOW_BITS_MASK;

    11 

    12 	nextLine = dstPtr + dstPitch;

    13 

    14 	do

    15 	{

    16 		u32 *bP = (u32 *) srcPtr;

    17 		u32 *xP = (u32 *) deltaPtr;

    18 		u32 *dP = (u32 *) dstPtr;

    19 		u32 *nL = (u32 *) nextLine;

    20 		u32	 currentPixel;

    21 		u32	 nextPixel;

    22 		u32	 currentDelta;

    23 		u32	 nextDelta;

    24 

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

    26 		nextPixel = *bP++;

    27 		nextDelta = *xP++;

    28 

    29 		do

    30 		{

    31 			currentPixel = nextPixel;

    32 			currentDelta = nextDelta;

    33 			nextPixel	 = *bP++;

    34 			nextDelta	 = *xP++;

    35 

    36 			if (currentPixel != currentDelta)

    37 			{

    38 				u32 colorA, product, colorB;

    39 

    40 				*(xP - 2) = currentPixel;

    41 #ifdef WORDS_BIGENDIAN

    42 				colorA = currentPixel >> 16;

    43 				colorB = currentDelta >> 16;

    44 #else

    45 				colorA = currentPixel & 0xffff;

    46 				colorB = currentDelta & 0xffff;

    47 #endif

    48 

    49 				product =   ((((colorA & colorMask) >> 1) +

    50 				              ((colorB & colorMask) >> 1) +

    51 				              (colorA & colorB & lowPixelMask)));

    52 

    53 				*(dP) = product | product << 16;

    54 				*(nL) = product | product << 16;

    55 

    56 #ifdef WORDS_BIGENDIAN

    57 				colorA = (currentPixel & 0xffff);

    58 				colorB = (currentDelta & 0xffff);

    59 #else

    60 				colorA = currentPixel >> 16;

    61 				colorB = currentDelta >> 16;

    62 #endif

    63 				product = ((((colorA & colorMask) >> 1) +

    64 				            ((colorB & colorMask) >> 1) +

    65 				            (colorA & colorB & lowPixelMask)));

    66 

    67 				*(dP + 1) = product | product << 16;

    68 				*(nL + 1) = product | product << 16;

    69 			}

    70 			else

    71 			{

    72 				u32 colorA, product;

    73 

    74 				*(xP - 2) = currentPixel;

    75 #ifdef WORDS_BIGENDIAN

    76 				colorA = currentPixel >> 16;

    77 #else

    78 				colorA = currentPixel & 0xffff;

    79 #endif

    80 

    81 				product = colorA;

    82 

    83 				*(dP) = product | product << 16;

    84 				*(nL) = product | product << 16;

    85 #ifdef WORDS_BIGENDIAN

    86 				colorA = (currentPixel & 0xffff);

    87 #else

    88 				colorA = currentPixel >> 16;

    89 #endif

    90 				product = colorA;

    91 

    92 				*(dP + 1) = product | product << 16;

    93 				*(nL + 1) = product | product << 16;

    94 			}

    95 

    96 			dP += 2;

    97 			nL += 2;

    98 		}

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

   100 

   101 		deltaPtr += srcPitch;

   102 		srcPtr	 += srcPitch;

   103 		dstPtr	 += dstPitch << 1;

   104 		nextLine += dstPitch << 1;

   105 	}

   106 	while (--height);

   107 }

   108 

   109 void MotionBlur32(u8 *srcPtr, u32 srcPitch, u8 *deltaPtr,

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

   111 {

   112 	u8 *nextLine, *finish;

   113 	u32 colorMask	 = ~RGB_LOW_BITS_MASK;

   114 	u32 lowPixelMask = RGB_LOW_BITS_MASK;

   115 

   116 	nextLine = dstPtr + dstPitch;

   117 

   118 	do

   119 	{

   120 		u32 *bP = (u32 *) srcPtr;

   121 		u32 *xP = (u32 *) deltaPtr;

   122 		u32 *dP = (u32 *) dstPtr;

   123 		u32 *nL = (u32 *) nextLine;

   124 		u32	 currentPixel;

   125 		u32	 nextPixel;

   126 		u32	 currentDelta;

   127 		u32	 nextDelta;

   128 

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

   130 		nextPixel = *bP++;

   131 		nextDelta = *xP++;

   132 

   133 		do

   134 		{

   135 			currentPixel = nextPixel;

   136 			currentDelta = nextDelta;

   137 			nextPixel	 = *bP++;

   138 			nextDelta	 = *xP++;

   139 

   140 			u32 colorA, product, colorB;

   141 

   142 			*(xP - 2) = currentPixel;

   143 			colorA	  = currentPixel;

   144 			colorB	  = currentDelta;

   145 

   146 			product =   ((((colorA & colorMask) >> 1) +

   147 			              ((colorB & colorMask) >> 1) +

   148 			              (colorA & colorB & lowPixelMask)));

   149 

   150 			*(dP)	  = product;

   151 			*(dP + 1) = product;

   152 			*(nL)	  = product;

   153 			*(nL + 1) = product;

   154 

   155 			*(xP - 1) = nextPixel;

   156 

   157 			colorA = nextPixel;

   158 			colorB = nextDelta;

   159 

   160 			product = ((((colorA & colorMask) >> 1) +

   161 			            ((colorB & colorMask) >> 1) +

   162 			            (colorA & colorB & lowPixelMask)));

   163 

   164 			*(dP + 2) = product;

   165 			*(dP + 3) = product;

   166 			*(nL + 2) = product;

   167 			*(nL + 3) = product;

   168 

   169 			nextPixel = *bP++;

   170 			nextDelta = *xP++;

   171 

   172 			dP += 4;

   173 			nL += 4;

   174 		}

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

   176 

   177 		deltaPtr += srcPitch;

   178 		srcPtr	 += srcPitch;

   179 		dstPtr	 += dstPitch << 1;

   180 		nextLine += dstPitch << 1;

   181 	}

   182 	while (--height);

   183 }
author	Robert McIntyre <rlm@mit.edu>
date	Mon, 26 Mar 2012 21:00:23 -0500
parents	f9f4f1b99eed
children