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.messaging.util.exif; 18 19 import java.io.InputStream; 20 import java.nio.ByteBuffer; 21 22 class ByteBufferInputStream extends InputStream { 23 24 private final ByteBuffer mBuf; 25 26 public ByteBufferInputStream(ByteBuffer buf) { 27 mBuf = buf; 28 } 29 30 @Override 31 public int read() { 32 if (!mBuf.hasRemaining()) { 33 return -1; 34 } 35 return mBuf.get() & 0xFF; 36 } 37 38 @Override 39 public int read(byte[] bytes, int off, int len) { 40 if (!mBuf.hasRemaining()) { 41 return -1; 42 } 43 44 len = Math.min(len, mBuf.remaining()); 45 mBuf.get(bytes, off, len); 46 return len; 47 } 48 } 49
