1 /* 2 * Copyright (C) 2012 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 17 package com.android.gallery3d.exif; 18 19 import java.io.FilterOutputStream; 20 import java.io.IOException; 21 import java.io.OutputStream; 22 import java.nio.ByteBuffer; 23 import java.nio.ByteOrder; 24 25 class OrderedDataOutputStream extends FilterOutputStream { 26 private final ByteBuffer mByteBuffer = ByteBuffer.allocate(4); 27 OrderedDataOutputStream(OutputStream out)28 public OrderedDataOutputStream(OutputStream out) { 29 super(out); 30 } 31 setByteOrder(ByteOrder order)32 public OrderedDataOutputStream setByteOrder(ByteOrder order) { 33 mByteBuffer.order(order); 34 return this; 35 } 36 writeShort(short value)37 public OrderedDataOutputStream writeShort(short value) throws IOException { 38 mByteBuffer.rewind(); 39 mByteBuffer.putShort(value); 40 out.write(mByteBuffer.array(), 0, 2); 41 return this; 42 } 43 writeInt(int value)44 public OrderedDataOutputStream writeInt(int value) throws IOException { 45 mByteBuffer.rewind(); 46 mByteBuffer.putInt(value); 47 out.write(mByteBuffer.array()); 48 return this; 49 } 50 writeRational(Rational rational)51 public OrderedDataOutputStream writeRational(Rational rational) throws IOException { 52 writeInt((int) rational.getNumerator()); 53 writeInt((int) rational.getDenominator()); 54 return this; 55 } 56 } 57