| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * 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.android.ex.variablespeed; |
| |
| import android.media.MediaPlayer; |
| |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| import javax.annotation.concurrent.ThreadSafe; |
| |
| /** Implementation of {@link MediaPlayer.OnCompletionListener} that we can wait for in tests. */ |
| @ThreadSafe |
| public class AwaitableErrorListener implements MediaPlayer.OnErrorListener { |
| private final BlockingQueue<Object> mQueue = new LinkedBlockingQueue<Object>(); |
| private volatile boolean mOnErrorReturnValue = true; |
| |
| @Override |
| public boolean onError(MediaPlayer mp, int what, int extra) { |
| addAnObjectToTheQueue(); |
| return mOnErrorReturnValue; |
| } |
| |
| public void setOnErrorReturnValue(boolean value) { |
| mOnErrorReturnValue = value; |
| } |
| |
| private void addAnObjectToTheQueue() { |
| try { |
| mQueue.put(new Object()); |
| } catch (InterruptedException e) { |
| // This should not happen in practice, the queue is unbounded so this method will not |
| // block. |
| // If this thread is using interrupt to shut down, preserve interrupt status and return. |
| Thread.currentThread().interrupt(); |
| } |
| } |
| |
| public void awaitOneCallback(long timeout, TimeUnit unit) throws InterruptedException, |
| TimeoutException { |
| if (mQueue.poll(timeout, unit) == null) { |
| throw new TimeoutException(); |
| } |
| } |
| |
| public void assertNoMoreCallbacks() { |
| if (mQueue.peek() != null) { |
| throw new IllegalStateException("there was an unexpected callback on the queue"); |
| } |
| } |
| } |