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      1 /*
      2  * Copyright (C) 2011 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.ex.variablespeed;
     18 
     19 import android.content.Context;
     20 import android.media.MediaPlayer;
     21 import android.net.Uri;
     22 
     23 import java.io.IOException;
     24 
     25 /**
     26  * Simple wrapper around a {@link MediaPlayerProxy}, guaranteeing that every call made to the
     27  * MediaPlayerProxy is single-threaded.
     28  */
     29 public class SingleThreadedMediaPlayerProxy implements MediaPlayerProxy {
     30     private final MediaPlayerProxy mDelegate;
     31 
     32     public SingleThreadedMediaPlayerProxy(MediaPlayerProxy delegate) {
     33         mDelegate = delegate;
     34     }
     35 
     36     @Override
     37     public synchronized void setOnErrorListener(MediaPlayer.OnErrorListener listener) {
     38         mDelegate.setOnErrorListener(listener);
     39     }
     40 
     41     @Override
     42     public synchronized void setOnCompletionListener(MediaPlayer.OnCompletionListener listener) {
     43         mDelegate.setOnCompletionListener(listener);
     44     }
     45 
     46     @Override
     47     public synchronized void release() {
     48         mDelegate.release();
     49     }
     50 
     51     @Override
     52     public synchronized void reset() {
     53         mDelegate.reset();
     54     }
     55 
     56     @Override
     57     public synchronized void setDataSource(String path) throws IllegalStateException, IOException {
     58         mDelegate.setDataSource(path);
     59     }
     60 
     61     @Override
     62     public synchronized void setDataSource(Context context, Uri intentUri)
     63             throws IllegalStateException, IOException {
     64         mDelegate.setDataSource(context, intentUri);
     65     }
     66 
     67     @Override
     68     public synchronized void prepare() throws IOException {
     69         mDelegate.prepare();
     70     }
     71 
     72     @Override
     73     public synchronized int getDuration() {
     74         return mDelegate.getDuration();
     75     }
     76 
     77     @Override
     78     public synchronized void seekTo(int startPosition) {
     79         mDelegate.seekTo(startPosition);
     80     }
     81 
     82     @Override
     83     public synchronized void start() {
     84         mDelegate.start();
     85     }
     86 
     87     @Override
     88     public synchronized boolean isPlaying() {
     89         return mDelegate.isPlaying();
     90     }
     91 
     92     @Override
     93     public synchronized int getCurrentPosition() {
     94         return mDelegate.getCurrentPosition();
     95     }
     96 
     97     public void setVariableSpeed(float rate) {
     98         ((VariableSpeed) mDelegate).setVariableSpeed(rate);
     99     }
    100 
    101     @Override
    102     public synchronized void pause() {
    103         mDelegate.pause();
    104     }
    105 
    106     @Override
    107     public void setAudioStreamType(int streamType) {
    108         mDelegate.setAudioStreamType(streamType);
    109     }
    110 }
    111