107 lines
4.0 KiB
Java
107 lines
4.0 KiB
Java
/*
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* SPDX-FileCopyrightText: 2013-2014 The CyanogenMod Project
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* SPDX-License-Identifier: Apache-2.0
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*/
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package org.lineageos.internal.util;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.Point;
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import android.util.Log;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.InputStream;
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public class ImageUtils {
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private static final String TAG = ImageUtils.class.getSimpleName();
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private static final String ASSET_URI_PREFIX = "file:///android_asset/";
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private static final int DEFAULT_IMG_QUALITY = 100;
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/**
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* Gets the Width and Height of the image
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*
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* @param inputStream The input stream of the image
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*
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* @return A point structure that holds the Width and Height (x and y)/*"
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*/
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public static Point getImageDimension(InputStream inputStream) {
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if (inputStream == null) {
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throw new IllegalArgumentException("'inputStream' cannot be null!");
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}
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BitmapFactory.Options options = new BitmapFactory.Options();
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options.inJustDecodeBounds = true;
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BitmapFactory.decodeStream(inputStream, null, options);
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Point point = new Point(options.outWidth,options.outHeight);
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return point;
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}
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/**
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* Crops the input image and returns a new InputStream of the cropped area
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*
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* @param inputStream The input stream of the image
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* @param imageWidth Width of the input image
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* @param imageHeight Height of the input image
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* @param inputStream Desired Width
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* @param inputStream Desired Width
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*
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* @return a new InputStream of the cropped area/*"
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*/
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public static InputStream cropImage(InputStream inputStream, int imageWidth, int imageHeight,
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int outWidth, int outHeight) throws IllegalArgumentException {
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if (inputStream == null){
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throw new IllegalArgumentException("inputStream cannot be null");
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}
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if (imageWidth <= 0 || imageHeight <= 0) {
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throw new IllegalArgumentException(
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String.format("imageWidth and imageHeight must be > 0: imageWidth=%d" +
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" imageHeight=%d", imageWidth, imageHeight));
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}
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if (outWidth <= 0 || outHeight <= 0) {
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throw new IllegalArgumentException(
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String.format("outWidth and outHeight must be > 0: outWidth=%d" +
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" outHeight=%d", imageWidth, outHeight));
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}
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int scaleDownSampleSize = Math.min(imageWidth / outWidth, imageHeight / outHeight);
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if (scaleDownSampleSize > 0) {
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imageWidth /= scaleDownSampleSize;
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imageHeight /= scaleDownSampleSize;
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} else {
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float ratio = (float) outWidth / outHeight;
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if (imageWidth < imageHeight * ratio) {
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outWidth = imageWidth;
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outHeight = (int) (outWidth / ratio);
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} else {
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outHeight = imageHeight;
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outWidth = (int) (outHeight * ratio);
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}
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}
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int left = (imageWidth - outWidth) / 2;
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int top = (imageHeight - outHeight) / 2;
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InputStream compressed = null;
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try {
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BitmapFactory.Options options = new BitmapFactory.Options();
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if (scaleDownSampleSize > 1) {
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options.inSampleSize = scaleDownSampleSize;
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}
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Bitmap bitmap = BitmapFactory.decodeStream(inputStream, null, options);
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if (bitmap == null) {
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return null;
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}
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Bitmap cropped = Bitmap.createBitmap(bitmap, left, top, outWidth, outHeight);
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ByteArrayOutputStream tmpOut = new ByteArrayOutputStream(2048);
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if (cropped.compress(Bitmap.CompressFormat.PNG, DEFAULT_IMG_QUALITY, tmpOut)) {
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byte[] outByteArray = tmpOut.toByteArray();
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compressed = new ByteArrayInputStream(outByteArray);
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}
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} catch (Exception e) {
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Log.e(TAG, "Exception " + e);
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}
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return compressed;
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}
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}
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