package com.jarrah.photo;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
import android.graphics.BitmapFactory.Options;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.media.ExifInterface;
import android.net.Uri;
import android.util.Log;
import android.widget.ImageView;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.IOException;
/**
* 图像处理的工具
*/
public class ImageUtil {
/**
* Utility method for downsampling images.
*
* @param path
* the file path
* @param data
* if file path is null, provide the image data directly
* @param target
* the target dimension
* @param isWidth
* use width as target, otherwise use the higher value of height
* or width
* @param round
* corner radius
* @return the resized image
*/
@SuppressWarnings("deprecation")
public static Bitmap getResizedImage(String path, byte[] data, int target,
boolean isWidth, int round) {
Options options = null;
if (target > 0) {
Options info = new Options();
info.inJustDecodeBounds = true;
//设置这两个属性可以减少内存损耗
info.inInputShareable = true;
info.inPurgeable = true;
decode(path, data, info);
int dim = info.outWidth;
if (!isWidth)
dim = Math.max(dim, info.outHeight);
int ssize = sampleSize(dim, target);
options = new Options();
options.inSampleSize = ssize;
}
Bitmap bm = null;
try {
bm = decode(path, data, options);
} catch (OutOfMemoryError e) {
L.red(e.toString());
e.printStackTrace();
}
if (round > 0) {
bm = getRoundedCornerBitmap(bm, round);
}
return bm;
}
private static Bitmap decode(String path, byte[] data,
BitmapFactory.Options options) {
Bitmap result = null;
if (path != null) {
result = decodeFile(path, options);
} else if (data != null) {
result = BitmapFactory.decodeByteArray(data, 0, data.length,
options);
}
if (result == null && options != null && !options.inJustDecodeBounds) {
L.red("decode image failed" + path);
}
return result;
}
@SuppressWarnings("deprecation")
private static Bitmap decodeFile(String path, BitmapFactory.Options options) {
Bitmap result = null;
if (options == null) {
options = new Options();
}
options.inInputShareable = true;
options.inPurgeable = true;
FileInputStream fis = null;
try {
fis = new FileInputStream(path);
FileDescriptor fd = fis.getFD();
result = BitmapFactory.decodeFileDescriptor(fd, null, options);
} catch (IOException e) {
L.red(e.toString());
} finally {
try {
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return result;
}
private static int sampleSize(int width, int target) {
int result = 1;
for (int i = 0; i < 10; i++) {
if (width < target * 2) {
break;
}
width = width / 2;
result = result * 2;
}
return result;
}
/**
* 获取圆角的bitmap
* @param bitmap
* @param pixels
* @return
*/
private static Bitmap getRoundedCornerBitmap(Bitmap bitmap, int pixels) {
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
bitmap.getHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
final RectF rectF = new RectF(rect);
final float roundPx = pixels;
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
return output;
}
/**
* auto fix the imageOrientation
* @param bm source
* @param iv imageView if set invloke it's setImageBitmap() otherwise do nothing
* @param uri image Uri if null user path
* @param path image path if null use uri
*/
public static Bitmap autoFixOrientation(Bitmap bm, ImageView iv, Uri uri,String path) {
int deg = 0;
try {
ExifInterface exif = null;
if (uri == null) {
exif = new ExifInterface(path);
}
else if (path == null) {
exif = new ExifInterface(uri.getPath());
}
if (exif == null) {
L.red("exif is null check your uri or path");
return bm;
}
String rotate = exif.getAttribute(ExifInterface.TAG_ORIENTATION);
int rotateValue = Integer.parseInt(rotate);
System.out.println("orientetion : " + rotateValue);
switch (rotateValue) {
case ExifInterface.ORIENTATION_ROTATE_90:
deg = 90;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
deg = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_270:
deg = 270;
break;
default:
deg = 0;
break;
}
} catch (Exception ee) {
Log.d("catch img error", "return");
if(iv != null)
iv.setImageBitmap(bm);
return bm;
}
Matrix m = new Matrix();
m.preRotate(deg);
bm = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), m, true);
//bm = Compress(bm, 75);
if(iv != null)
iv.setImageBitmap(bm);
return bm;
}
/**
* @param bmp
* @return
*/
public static Bitmap blurImageAmeliorate(Bitmap bmp)
{
long start = System.currentTimeMillis();
// 高斯矩阵
int[] gauss = new int[] { 1, 2, 1, 2, 4, 2, 1, 2, 1 };
int width = bmp.getWidth();
int height = bmp.getHeight();
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
int pixR = 0;
int pixG = 0;
int pixB = 0;
int pixColor = 0;
int newR = 0;
int newG = 0;
int newB = 0;
int delta = 13; // 值越小图片会越亮，越大则越暗
int idx = 0;
int[] pixels = new int[width * height];
bmp.getPixels(pixels, 0, width, 0, 0, width, height);
for (int i = 1, length = height - 1; i < length; i++)
{
for (int k = 1, len = width - 1; k < len; k++)
{
idx = 0;
for (int m = -1; m <= 1; m++)
{
for (int n = -1; n <= 1; n++)
{
pixColor = pixels[(i + m) * width + k + n];
pixR = Color.red(pixColor);
pixG = Color.green(pixColor);
pixB = Color.blue(pixColor);
newR = newR + (int) (pixR * gauss[idx]);
newG = newG + (int) (pixG * gauss[idx]);
newB = newB + (int) (pixB * gauss[idx]);
idx++;
}
}
newR /= delta;
newG /= delta;
newB /= delta;
newR = Math.min(255, Math.max(0, newR));
newG = Math.min(255, Math.max(0, newG));
newB = Math.min(255, Math.max(0, newB));
pixels[i * width + k] = Color.argb(255, newR, newG, newB);
newR = 0;
newG = 0;
newB = 0;
}
}
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
long end = System.currentTimeMillis();
Log.d("may", "used time="+(end - start));
return bitmap;
}
public static Bitmap circleImage(Bitmap bitmap) {
int pixels = 400;
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
bitmap.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
final RectF rectF = new RectF(rect);
final float roundPx = pixels;
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
return output;
}
public static class L {
public static void red(Object o) {
Log.e("ImageUtil", o.toString());
}
}
}