1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.devcamera; 17 18 import android.graphics.Bitmap; 19 import android.graphics.BitmapFactory; 20 import android.graphics.Matrix; 21 import android.media.Image; 22 23 import java.nio.ByteBuffer; 24 25 /** 26 * Some Bitmap utility functions. 27 */ 28 public class BitmapUtility { 29 30 public static Bitmap bitmapFromJpeg(byte[] data) { 31 // 32K buffer. 32 byte[] decodeBuffer = new byte[32 * 1024]; // 32K buffer. 33 34 BitmapFactory.Options opts = new BitmapFactory.Options(); 35 opts.inSampleSize = 16; // 3264 / 16 = 204. 36 opts.inTempStorage = decodeBuffer; 37 Bitmap b = BitmapFactory.decodeByteArray(data, 0, data.length, opts); 38 39 return rotatedBitmap(b); 40 } 41 42 public static Bitmap bitmapFromYuvImage(Image img) { 43 int w = img.getWidth(); 44 int h = img.getHeight(); 45 ByteBuffer buf0 = img.getPlanes()[0].getBuffer(); 46 int len = buf0.capacity(); 47 int[] colors = new int[len]; 48 int alpha = 255 << 24; 49 int green; 50 for (int i = 0; i < len; i++) { 51 green = ((int) buf0.get(i)) & 255; 52 colors[i] = green << 16 | green << 8 | green | alpha; 53 } 54 Bitmap b = Bitmap.createBitmap(colors, w, h, Bitmap.Config.ARGB_8888); 55 56 return rotatedBitmap(b); 57 } 58 59 /** 60 * Returns parameter bitmap rotated 90 degrees 61 */ 62 private static Bitmap rotatedBitmap(Bitmap b) { 63 Matrix mat = new Matrix(); 64 mat.postRotate(90); 65 Bitmap b2 = Bitmap.createBitmap(b, 0, 0,b.getWidth(),b.getHeight(), mat, true); 66 return b2; 67 } 68 69 } 70
