| /* |
| * Copyright 2012 Sebastian Annies, Hamburg |
| * |
| * Licensed under the Apache License, Version 2.0 (the License); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an AS IS BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.googlecode.mp4parser.util; |
| |
| import java.io.EOFException; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.ByteChannel; |
| |
| /** |
| * Creates a <code>ReadableByteChannel</code> that is backed by a <code>ByteBuffer</code>. |
| */ |
| public class ByteBufferByteChannel implements ByteChannel { |
| ByteBuffer byteBuffer; |
| |
| public ByteBufferByteChannel(ByteBuffer byteBuffer) { |
| this.byteBuffer = byteBuffer; |
| } |
| |
| public int read(ByteBuffer dst) throws IOException { |
| byte[] b = dst.array(); |
| int r = dst.remaining(); |
| if (byteBuffer.remaining() >= r) { |
| byteBuffer.get(b, dst.position(), r); |
| return r; |
| } else { |
| throw new EOFException("Reading beyond end of stream"); |
| } |
| } |
| |
| public boolean isOpen() { |
| return true; |
| } |
| |
| public void close() throws IOException { |
| } |
| |
| public int write(ByteBuffer src) throws IOException { |
| int r = src.remaining(); |
| byteBuffer.put(src); |
| return r; |
| } |
| } |