1e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka/* 2e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * Copyright (C) 2012 The Android Open Source Project 3e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * 4e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * Licensed under the Apache License, Version 2.0 (the "License"); 5e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * you may not use this file except in compliance with the License. 6e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * You may obtain a copy of the License at 7e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * 8e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * http://www.apache.org/licenses/LICENSE-2.0 9e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * 10e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * Unless required by applicable law or agreed to in writing, software 11e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * distributed under the License is distributed on an "AS IS" BASIS, 12e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * See the License for the specific language governing permissions and 14e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka * limitations under the License. 15e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka */ 16e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka 17e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurkapackage com.android.gallery3d.exif; 18e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka 19e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurkaimport java.io.InputStream; 20e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurkaimport java.nio.ByteBuffer; 21e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka 22e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurkaclass ByteBufferInputStream extends InputStream { 23e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka 24e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka private ByteBuffer mBuf; 25e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka 26e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka public ByteBufferInputStream(ByteBuffer buf) { 27e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka mBuf = buf; 28e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka } 29e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka 30e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka @Override 31e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka public int read() { 32e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka if (!mBuf.hasRemaining()) { 33e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka return -1; 34e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka } 35e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka return mBuf.get() & 0xFF; 36e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka } 37e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka 38e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka @Override 39e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka public int read(byte[] bytes, int off, int len) { 40e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka if (!mBuf.hasRemaining()) { 41e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka return -1; 42e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka } 43e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka 44e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka len = Math.min(len, mBuf.remaining()); 45e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka mBuf.get(bytes, off, len); 46e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka return len; 47e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka } 48e8d1bf7a439450b9979701909164a6baffbe8baeMichael Jurka} 49