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70 lines
2.1 KiB
70 lines
2.1 KiB
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.devcamera;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.Matrix;
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import android.media.Image;
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import java.nio.ByteBuffer;
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/**
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* Some Bitmap utility functions.
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*/
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public class BitmapUtility {
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public static Bitmap bitmapFromJpeg(byte[] data) {
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// 32K buffer.
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byte[] decodeBuffer = new byte[32 * 1024]; // 32K buffer.
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BitmapFactory.Options opts = new BitmapFactory.Options();
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opts.inSampleSize = 16; // 3264 / 16 = 204.
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opts.inTempStorage = decodeBuffer;
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Bitmap b = BitmapFactory.decodeByteArray(data, 0, data.length, opts);
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return rotatedBitmap(b);
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}
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public static Bitmap bitmapFromYuvImage(Image img) {
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int w = img.getWidth();
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int h = img.getHeight();
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ByteBuffer buf0 = img.getPlanes()[0].getBuffer();
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int len = buf0.capacity();
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int[] colors = new int[len];
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int alpha = 255 << 24;
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int green;
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for (int i = 0; i < len; i++) {
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green = ((int) buf0.get(i)) & 255;
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colors[i] = green << 16 | green << 8 | green | alpha;
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}
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Bitmap b = Bitmap.createBitmap(colors, w, h, Bitmap.Config.ARGB_8888);
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return rotatedBitmap(b);
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}
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/**
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* Returns parameter bitmap rotated 90 degrees
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*/
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private static Bitmap rotatedBitmap(Bitmap b) {
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Matrix mat = new Matrix();
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mat.postRotate(90);
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Bitmap b2 = Bitmap.createBitmap(b, 0, 0,b.getWidth(),b.getHeight(), mat, true);
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return b2;
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}
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}
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