Mercurial > vba-clojure

annotate src/filters/motionblur.cpp @ 516:7eac27143ab9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
cosmetic change. need to investigate why switching pallet and tile assembly does not work.
author Robert McIntyre <rlm@mit.edu>
date Fri, 22 Jun 2012 21:24:44 -0500
parents f9f4f1b99eed
children
rev   line source
rlm@1 1 #include "../Port.h"
rlm@1 2
rlm@1 3 extern u32 RGB_LOW_BITS_MASK;
rlm@1 4
rlm@1 5 void MotionBlur(u8 *srcPtr, u32 srcPitch, u8 *deltaPtr,
rlm@1 6 u8 *dstPtr, u32 dstPitch, int width, int height)
rlm@1 7 {
rlm@1 8 u8 *nextLine, *finish;
rlm@1 9 u32 colorMask = ~(RGB_LOW_BITS_MASK | (RGB_LOW_BITS_MASK << 16));
rlm@1 10 u32 lowPixelMask = RGB_LOW_BITS_MASK;
rlm@1 11
rlm@1 12 nextLine = dstPtr + dstPitch;
rlm@1 13
rlm@1 14 do
rlm@1 15 {
rlm@1 16 u32 *bP = (u32 *) srcPtr;
rlm@1 17 u32 *xP = (u32 *) deltaPtr;
rlm@1 18 u32 *dP = (u32 *) dstPtr;
rlm@1 19 u32 *nL = (u32 *) nextLine;
rlm@1 20 u32 currentPixel;
rlm@1 21 u32 nextPixel;
rlm@1 22 u32 currentDelta;
rlm@1 23 u32 nextDelta;
rlm@1 24
rlm@1 25 finish = (u8 *) bP + ((width + 2) << 1);
rlm@1 26 nextPixel = *bP++;
rlm@1 27 nextDelta = *xP++;
rlm@1 28
rlm@1 29 do
rlm@1 30 {
rlm@1 31 currentPixel = nextPixel;
rlm@1 32 currentDelta = nextDelta;
rlm@1 33 nextPixel = *bP++;
rlm@1 34 nextDelta = *xP++;
rlm@1 35
rlm@1 36 if (currentPixel != currentDelta)
rlm@1 37 {
rlm@1 38 u32 colorA, product, colorB;
rlm@1 39
rlm@1 40 *(xP - 2) = currentPixel;
rlm@1 41 #ifdef WORDS_BIGENDIAN
rlm@1 42 colorA = currentPixel >> 16;
rlm@1 43 colorB = currentDelta >> 16;
rlm@1 44 #else
rlm@1 45 colorA = currentPixel & 0xffff;
rlm@1 46 colorB = currentDelta & 0xffff;
rlm@1 47 #endif
rlm@1 48
rlm@1 49 product = ((((colorA & colorMask) >> 1) +
rlm@1 50 ((colorB & colorMask) >> 1) +
rlm@1 51 (colorA & colorB & lowPixelMask)));
rlm@1 52
rlm@1 53 *(dP) = product | product << 16;
rlm@1 54 *(nL) = product | product << 16;
rlm@1 55
rlm@1 56 #ifdef WORDS_BIGENDIAN
rlm@1 57 colorA = (currentPixel & 0xffff);
rlm@1 58 colorB = (currentDelta & 0xffff);
rlm@1 59 #else
rlm@1 60 colorA = currentPixel >> 16;
rlm@1 61 colorB = currentDelta >> 16;
rlm@1 62 #endif
rlm@1 63 product = ((((colorA & colorMask) >> 1) +
rlm@1 64 ((colorB & colorMask) >> 1) +
rlm@1 65 (colorA & colorB & lowPixelMask)));
rlm@1 66
rlm@1 67 *(dP + 1) = product | product << 16;
rlm@1 68 *(nL + 1) = product | product << 16;
rlm@1 69 }
rlm@1 70 else
rlm@1 71 {
rlm@1 72 u32 colorA, product;
rlm@1 73
rlm@1 74 *(xP - 2) = currentPixel;
rlm@1 75 #ifdef WORDS_BIGENDIAN
rlm@1 76 colorA = currentPixel >> 16;
rlm@1 77 #else
rlm@1 78 colorA = currentPixel & 0xffff;
rlm@1 79 #endif
rlm@1 80
rlm@1 81 product = colorA;
rlm@1 82
rlm@1 83 *(dP) = product | product << 16;
rlm@1 84 *(nL) = product | product << 16;
rlm@1 85 #ifdef WORDS_BIGENDIAN
rlm@1 86 colorA = (currentPixel & 0xffff);
rlm@1 87 #else
rlm@1 88 colorA = currentPixel >> 16;
rlm@1 89 #endif
rlm@1 90 product = colorA;
rlm@1 91
rlm@1 92 *(dP + 1) = product | product << 16;
rlm@1 93 *(nL + 1) = product | product << 16;
rlm@1 94 }
rlm@1 95
rlm@1 96 dP += 2;
rlm@1 97 nL += 2;
rlm@1 98 }
rlm@1 99 while ((u8 *) bP < finish);
rlm@1 100
rlm@1 101 deltaPtr += srcPitch;
rlm@1 102 srcPtr += srcPitch;
rlm@1 103 dstPtr += dstPitch << 1;
rlm@1 104 nextLine += dstPitch << 1;
rlm@1 105 }
rlm@1 106 while (--height);
rlm@1 107 }
rlm@1 108
rlm@1 109 void MotionBlur32(u8 *srcPtr, u32 srcPitch, u8 *deltaPtr,
rlm@1 110 u8 *dstPtr, u32 dstPitch, int width, int height)
rlm@1 111 {
rlm@1 112 u8 *nextLine, *finish;
rlm@1 113 u32 colorMask = ~RGB_LOW_BITS_MASK;
rlm@1 114 u32 lowPixelMask = RGB_LOW_BITS_MASK;
rlm@1 115
rlm@1 116 nextLine = dstPtr + dstPitch;
rlm@1 117
rlm@1 118 do
rlm@1 119 {
rlm@1 120 u32 *bP = (u32 *) srcPtr;
rlm@1 121 u32 *xP = (u32 *) deltaPtr;
rlm@1 122 u32 *dP = (u32 *) dstPtr;
rlm@1 123 u32 *nL = (u32 *) nextLine;
rlm@1 124 u32 currentPixel;
rlm@1 125 u32 nextPixel;
rlm@1 126 u32 currentDelta;
rlm@1 127 u32 nextDelta;
rlm@1 128
rlm@1 129 finish = (u8 *) bP + ((width + 1) << 2);
rlm@1 130 nextPixel = *bP++;
rlm@1 131 nextDelta = *xP++;
rlm@1 132
rlm@1 133 do
rlm@1 134 {
rlm@1 135 currentPixel = nextPixel;
rlm@1 136 currentDelta = nextDelta;
rlm@1 137 nextPixel = *bP++;
rlm@1 138 nextDelta = *xP++;
rlm@1 139
rlm@1 140 u32 colorA, product, colorB;
rlm@1 141
rlm@1 142 *(xP - 2) = currentPixel;
rlm@1 143 colorA = currentPixel;
rlm@1 144 colorB = currentDelta;
rlm@1 145
rlm@1 146 product = ((((colorA & colorMask) >> 1) +
rlm@1 147 ((colorB & colorMask) >> 1) +
rlm@1 148 (colorA & colorB & lowPixelMask)));
rlm@1 149
rlm@1 150 *(dP) = product;
rlm@1 151 *(dP + 1) = product;
rlm@1 152 *(nL) = product;
rlm@1 153 *(nL + 1) = product;
rlm@1 154
rlm@1 155 *(xP - 1) = nextPixel;
rlm@1 156
rlm@1 157 colorA = nextPixel;
rlm@1 158 colorB = nextDelta;
rlm@1 159
rlm@1 160 product = ((((colorA & colorMask) >> 1) +
rlm@1 161 ((colorB & colorMask) >> 1) +
rlm@1 162 (colorA & colorB & lowPixelMask)));
rlm@1 163
rlm@1 164 *(dP + 2) = product;
rlm@1 165 *(dP + 3) = product;
rlm@1 166 *(nL + 2) = product;
rlm@1 167 *(nL + 3) = product;
rlm@1 168
rlm@1 169 nextPixel = *bP++;
rlm@1 170 nextDelta = *xP++;
rlm@1 171
rlm@1 172 dP += 4;
rlm@1 173 nL += 4;
rlm@1 174 }
rlm@1 175 while ((u8 *) bP < finish);
rlm@1 176
rlm@1 177 deltaPtr += srcPitch;
rlm@1 178 srcPtr += srcPitch;
rlm@1 179 dstPtr += dstPitch << 1;
rlm@1 180 nextLine += dstPitch << 1;
rlm@1 181 }
rlm@1 182 while (--height);
rlm@1 183 }