浼犺繘鐨勬槸byteArray 浼犲嚭鐨勪篃鏄痓yteArray 鍗冧竾涓嶈鍦╝lchemy c 涓as鐨勫璞¤繘琛屽嚱鏁拌皟鐢?閭ｆ牱閫熷害寰堟參.... 杈句笉鍒扮偧閲戞湳鐨勬晥鏋?..
濂藉惂 浠ｇ爜 鑷繁鐪嬪惂 榪樻槸姣旇緝綆鍗曠殑
alchemy c 浠ｇ爜
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "AS3.h"
typedef unsigned int uint;
#define MAXV 4
using namespace std;
double SinXDivX(double x) {
double a = -1;
if (x < 0)
x = -x;
double x2 = x * x;
double x3 = x2 * x;
if (x <= 1)
return (a + 2) * x3 - (a + 3) * x2 + 1;
else if (x <= 2)
return a * x3 - 5 * a * x2 + 8 * a * x - 4 * a;
return 0;
}
uint availablePixel(uint *src, int srcWidth, int srcHeight, int x, int y) {
bool flag = true;
if (x < 0) {
x = 0;
flag = false;
} else if (x >= srcWidth) {
x = srcWidth - 1;
flag = false;
}
if (y < 0) {
y = 0;
flag = false;
} else if (y >= srcHeight) {
y = srcHeight - 1;
flag = false;
}
int lenth = srcWidth * srcHeight;
int in = x + y*srcWidth;
uint ret = src[in];
if (!flag)
ret = ret & 0x00ffffff;
return ret;
}
uint border_color(double Color) {
if (Color <= 0)
return uint(0);
if (Color >= 255)
return uint(255);
return uint(Color);
}
char *strreverse(char *a) {
char r[10] = { 0 };
int i, j;
for (i = 0, j = strlen(a) - 1; a[i]; ++i, --j) {
r[j] = a[i];
}
return r;
}
char *toString(uint val) {
char a[10] = { 0 };
char ch[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B',
'C', 'D', 'E', 'F' };
int i = 0, rt;
if (val == 0)
a[0] = '0';
while (val) {
rt = val % 16;
val >>= 4;
a[i++] = ch[rt];
}
return strreverse(a);
}
uint MatrixMutiple(double a[], uint b[][MAXV], double c[], int ii, int jj) {
int i, j, k, z;
double tp[MAXV], ret[MAXV], ttp[MAXV];
memset(ret, 0.0, sizeof(ret));
for (i = 0; i < MAXV; ++i) {
memset(tp, 0.0, sizeof(tp));
for (j = 0; j < MAXV; ++j) {
tp[0] += a[j] * (b[j][i] >> 24);
tp[1] += a[j] * ((b[j][i] & 0x00ffffff) >> 16);
tp[2] += a[j] * ((b[j][i] & 0x0000ffff) >> 8);
tp[3] += a[j] * (b[j][i] & 0x000000ff);
}
for (k = 0; k < MAXV; ++k) {
ret[k] += c[i] * tp[k];
}
}
uint af1 = border_color(ret[0] + 0.5) << 24;
uint r1 = border_color(ret[1] + 0.5) << 16;
uint g1 = border_color(ret[2] + 0.5) << 8;
uint b1 = border_color(ret[3] + 0.5);
return af1 + r1 + g1 + b1;
}
void echo(uint *val, int len) {
int i = 0;
for (i = 0; i < len; ++i) {
AS3_Trace(AS3_String(toString(val[i])));
}
}
static AS3_Val biCubic(void* self, AS3_Val args) {
AS3_Val srcByte, dstByte;
int srcWidth, srcHeight, dstWidth, dstHeight;
AS3_ArrayValue(args,
"AS3ValType, IntType, IntType, AS3ValType, IntType, IntType",
&srcByte, &srcWidth, &srcHeight, &dstByte, &dstWidth, &dstHeight);
int srcLen = srcWidth * srcHeight;
int dstLen = dstWidth * dstHeight;
uint *src = new uint[srcLen];
uint *dst = new uint[dstLen];
AS3_SetS(srcByte, "position", AS3_Int(0));
AS3_ByteArray_readBytes(src, srcByte, 4 * srcLen);
double widthFactor = 1.0 * srcWidth / dstWidth;
double heightFactor = 1.0 * srcHeight / dstHeight;
int i, j, k, z, gf = 0;
double tx, ty, u, v;
int x, y;
double A[MAXV], C[MAXV];
uint B[MAXV][MAXV];
for (i = 0; i < dstWidth; ++i) {
for (j = 0; j < dstHeight; ++j) {
tx = (i + 0.5) * widthFactor - 0.5;
ty = (j + 0.5) * heightFactor - 0.5;
if (tx < 0)
tx = -tx;
if (ty < 0)
ty = -ty;
x = floor(tx);
y = floor(ty);
u = tx - x;
v = ty - y;
for (k = 0; k < MAXV; ++k) {
A[k] = SinXDivX(u + 1.0 - k);
C[k] = SinXDivX(v + 1.0 - k);
for (z = 0; z < MAXV; ++z) {
B[k][z] = availablePixel(src, srcWidth, srcHeight,
x + k - 1, y + z - 1);
}
}
dst[i+j*dstWidth] = MatrixMutiple(A, B, C, i, j);
}
}
//echo(dst, dstLen);
AS3_SetS(dstByte, "position", AS3_Int(0));
AS3_ByteArray_writeBytes(dstByte, dst, 4 * dstLen);
return AS3_True();
}
int main() {
AS3_Val biCubicMethod = AS3_Function(NULL, biCubic);
AS3_Val lib = AS3_Object("biCubic:AS3ValType", biCubicMethod);
AS3_Release(biCubicMethod);
AS3_LibInit(lib);
return 0;
}
as 浠ｇ爜
package {
import cmodule.ImageScaling.CLibInit;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Sprite;
import flash.display.StageScaleMode;
import flash.geom.Rectangle;
import flash.utils.ByteArray;
import flash.utils.Timer;
[SWF(width="1000", height="600", backgroundColor="#000000", frameRate="24")]
public class Main extends Sprite {
[Embed(source='f_01.png')]
public static const image:Class;
public function Main() {
this.stage.scaleMode = StageScaleMode.NO_SCALE;
var bitmapdata:BitmapData = (new image() as Bitmap).bitmapData;
var t1:Number = (new Date()).time;
var bitmap:Bitmap = new Bitmap(Main.Cubic(bitmapdata, 256, 256));
var t2:Number = (new Date()).time;
trace((t2-t1)+"ms");
this.addChild(bitmap);
}
public static function Cubic (bitmapData:BitmapData, scalingWidth:uint, scalingHeight:uint):BitmapData {
var nbd:BitmapData = new BitmapData(scalingWidth, scalingHeight, true, 0xffffffff);
var loader:cmodule.ImageScaling.CLibInit = new cmodule.ImageScaling.CLibInit();
var lib:Object = loader.init();
var byte:ByteArray = bitmapData.getPixels(new Rectangle(0, 0, bitmapData.width, bitmapData.height));
var byte2:ByteArray = nbd.getPixels(new Rectangle(0, 0, scalingWidth, scalingHeight));
lib.biCubic(byte, bitmapData.width, bitmapData.height, byte2, scalingWidth, scalingHeight);
byte2.position = 0;
nbd.setPixels(new Rectangle(0, 0, scalingWidth, scalingHeight), byte2);
return nbd;
}
}
}
]]>
package {
import flash.display.BitmapData;
public class ImageScaling {
public static var PI:Number = Math.PI;
public static function getA(val:uint):uint {
return val >>> 24;
}
public static function getR(val:uint):uint {
return (val & 0x00ffffff) >>> 16;
}
public static function getG(val:uint):uint {
return (val & 0x0000ffff) >>> 8;
}
public static function getB(val:uint):uint {
return val & 0x000000ff;
}
public static function getAA(val:Array):Array {
var ret:Array = [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]];
for (var i:uint = 0; i < 4; ++ i) {
for (var j:uint = 0; j < 4; ++ j) {
ret[ i ][ j ] = val[ i ][ j ] >>> 24;
}
}
return ret;
}
public static function getRR(val:Array):Array {
var ret:Array = [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]];
for (var i:uint = 0; i < 4; ++ i) {
for (var j:uint = 0; j < 4; ++ j) {
ret[ i ][ j ] = (val[ i ][ j ] & 0x00ffffff) >>> 16;
}
}
return ret;
}
public static function getGG(val:Array):Array {
var ret:Array = [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]];
for (var i:uint = 0; i < 4; ++ i) {
for (var j:uint = 0; j < 4; ++ j) {
ret[ i ][ j ] = (val[ i ][ j ] & 0x0000ffff) >>> 8;
}
}
return ret;
}
public static function getBB(val:Array):Array {
var ret:Array = [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]];
for (var i:uint = 0; i < 4; ++ i) {
for (var j:uint = 0; j < 4; ++ j) {
ret[ i ][ j ] = (val[ i ][ j ] & 0x000000ff);
}
}
return ret;
}
public static function availablePixel (bitmapData:BitmapData, x:uint, y:uint):uint {
var flag:Boolean = true;
if (x < 0) { x = 0; flag = false; }
else if (x >= bitmapData.width) { x = bitmapData.width - 1; flag = false; }
else if (y < 0) { y = 0; flag = false; }
else if (y >= bitmapData.height) { y = bitmapData.height - 1; flag = false; }
var ret:uint = bitmapData.getPixel32(x, y);
if (!flag) ret = ret & 0x00ffffff;
return ret;
}
public static function SinXDivX(x:Number):Number {
var a:Number = -1;
if (x < 0) x = -x;
var x2:Number = x*x;
var x3:Number = x2*x;
if (x <= 1)
return (a + 2) * x3 - (a + 3) * x2 + 1;
else if (x <= 2)
return a * x3 - 5 * a * x2 + 8 * a * x - 4 * a;
return 0;
}
public static function getPixels(a:Array, b:Array, c:Array):uint {
var arfa:Array = ImageScaling.getAA(b);
var R:Array = ImageScaling.getRR(b);
var G:Array = ImageScaling.getGG(b);
var B:Array = ImageScaling.getBB(b);
var aa:uint = ImageScaling.MatrixMutiple(a, arfa, c) << 24;
var rr:uint = ImageScaling.MatrixMutiple(a, R, c) << 16;
var gg:uint = ImageScaling.MatrixMutiple(a, G, c) << 8;
var bb:uint = ImageScaling.MatrixMutiple(a, B, c);
//trace (aa + " " + rr + " " + gg + " " + bb);
return aa + rr + gg + bb;
}
public static function border_color(Color:Number):uint {
if (Color <= 0) return uint(0);
if (Color >= 255) return uint(255);
return uint(Color);
}
public static function MatrixMutiple(a:Array, b:Array, c:Array):uint {
var ret:Number = 0;
for (var i:int = 0; i < 4; ++ i) {
var tmp:Number = 0;
for (var j:int = 0; j < 4; ++ j) {
tmp += a[ j ] * b[ j ][ i ];
}
ret += c[ i ] * tmp;
}
return border_color(ret + 0.5);
}
public static function thirdConvolution (bitmapData:BitmapData, scalingWidth:uint, scalingHeight:uint):BitmapData {
var widthFactor:Number = bitmapData.width / scalingWidth;
var heightFactor:Number = bitmapData.height / scalingHeight;
var i:uint = 0, j:uint = 0;
var nbd:BitmapData = new BitmapData(scalingWidth, scalingHeight, true, 0xffffffff);
for (i = 0; i < scalingWidth; ++ i) {
for (j = 0; j < scalingHeight; ++ j) {
var tx:Number = (i + 0.5) * widthFactor - 0.5;
var ty:Number = (j + 0.5) * heightFactor - 0.5;
if (tx < 0) tx = -tx;
if (ty < 0) ty = -ty;
var x:uint = Math.floor(tx);
var y:uint = Math.floor(ty);
var u:Number = tx - x;
var v:Number = ty - y;
var A:Array = [0.0, 0.0, 0.0, 0.0];
var B:Array = [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]];
var C:Array = [0.0, 0.0, 0.0, 0.0];
for (var k:int = 0; k < 4; ++ k) {
A[ k ] = ImageScaling.SinXDivX(u+1.0-k);
C[ k ] = ImageScaling.SinXDivX(v+1.0-k);
for (var z:int = 0; z < 4; ++ z) {
B[ k ][ z ] = ImageScaling.availablePixel(bitmapData, x+k-1, y+z-1);
}
}
var p:uint = ImageScaling.getPixels(A, B, C);
nbd.setPixel32(i, j, p);
}
}
return nbd;
}
public static function calculator(p:Array, c:Array):uint {
return uint(p[0]*c[0]+p[1]*c[1]+p[2]*c[2]+p[3]*c[3]);
}
public static function mixedPixel(p:Array, c:Array):uint {
var aa:Array = [0, 0, 0, 0];
var ra:Array = [0, 0, 0, 0];
var ga:Array = [0, 0, 0, 0];
var ba:Array = [0, 0, 0, 0];
for (var i:uint = 0; i < 4; ++ i) {
aa[ i ] = ImageScaling.getA(p[ i ]);
ra[ i ] = ImageScaling.getR(p[ i ]);
ga[ i ] = ImageScaling.getG(p[ i ]);
ba[ i ] = ImageScaling.getB(p[ i ]);
}
return (ImageScaling.calculator(aa, c) << 24) + (ImageScaling.calculator(ra, c) << 16) + (ImageScaling.calculator(ga, c) << 8) + ImageScaling.calculator(ba, c);
}
public static function secondLinear (bitmapData:BitmapData, scalingWidth:uint, scalingHeight:uint):BitmapData {
var widthFactor:Number = bitmapData.width / scalingWidth;
var heightFactor:Number = bitmapData.height / scalingHeight;
var i:uint = 0, j:uint = 0;
var nbd:BitmapData = new BitmapData(scalingWidth, scalingHeight, true, 0xffffffff);
for (i = 0; i < scalingWidth; ++ i) {
for (j = 0; j < scalingHeight; ++ j) {
var tx:Number = i * widthFactor - 0.5;
var ty:Number = j * heightFactor - 0.5;
if (tx < 0) tx = -tx;
if (ty < 0) ty = -ty;
var x:uint = Math.floor(tx);
var y:uint = Math.floor(ty);
var u:Number = tx - x;
var v:Number = ty - y;
var ti:uint = x;
var tj:uint = y;
var p0:uint = ImageScaling.availablePixel(bitmapData, x, y);
var p1:uint = ImageScaling.availablePixel(bitmapData, x, y+1);
var p2:uint = ImageScaling.availablePixel(bitmapData, x+1, y);
var p3:uint = ImageScaling.availablePixel(bitmapData, x+1, y+1);
var pa:Array = [p0, p1, p2, p3];
var c0:Number = (1.0-u)*(1.0-v);
var c1:Number = (1.0-u)*v;
var c2:Number = u*(1.0-v);
var c3:Number = u*v;
var ca:Array = [c0, c1, c2, c3];
nbd.setPixel32(i, j, ImageScaling.mixedPixel(pa, ca));
}
}
return nbd;
}
}
}
嫻嬭瘯:
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鍙傝?/span>h ttp://blog.csdn.net/housisong/article/details/1452249
package {
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Sprite;
import flash.geom.Rectangle;
import flash.system.ImageDecodingPolicy;
import flash.utils.ByteArray;
[SWF(width="1000", height="600", backgroundColor="#cacaca", frameRate="24")]
public class Main extends Sprite {
[Embed(source='dog.png')]
public static const image:Class;
public function Main() {
var bitmapdata:BitmapData = (new image() as Bitmap).bitmapData
var bitmap:Bitmap = new Bitmap(showImage2(bitmapdata));
bitmap.x = 0;
bitmap.y = 0;
this.addChild(bitmap);
var bitmap2:Bitmap = new Bitmap(showImage1(bitmapdata));
bitmap2.x = 300;
bitmap2.y = 300;
this.addChild(bitmap2);
}
public static function showImage1(bitmapdata:BitmapData):BitmapData {
return ImageScaling.secondLinear(bitmapdata, 286, 300);
}
public static function showImage2(bitmapdata:BitmapData):BitmapData {
return ImageScaling.thirdConvolution(bitmapdata, 286, 300);
}
}
}
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鍙傝?/span>h ttp://blog.csdn.net/housisong/article/details/1452249
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