cordova-android/src/com/nitobi/phonegap/AudioHandler.java

package com.nitobi.phonegap;

import java.io.File;

import android.content.Context;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.media.MediaPlayer.OnCompletionListener;

public class AudioHandler implements OnCompletionListener {
	private MediaRecorder recorder;
	private boolean isRecording = false;
	MediaPlayer mPlayer;
	private boolean isPlaying = false;
	private String recording;
	private String saveFile;
	private Context mCtx;
	
	public AudioHandler(String file, Context ctx) {
		this.recording = file;
		this.mCtx = ctx;
	}
	
	public void startRecording(String file){
		if (!isRecording){
			saveFile=file;
			recorder = new MediaRecorder();
			recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
			recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
			recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
			recorder.setOutputFile(this.recording);
			recorder.prepare();
			isRecording = true;
			recorder.start();
		}
	}
	
	private void moveFile(String file) {
		/* this is just a hck that I will remove later */
		File f = new File (this.recording);
		f.renameTo(new File("/sdcard" + file));
		System.out.println(this.recording);
		System.out.println(file);
	}
	
	public void stopRecording(){
		try{
			if((recorder != null)&&(isRecording))
			{
				isRecording = false;
				recorder.stop();
		        recorder.release(); 
			}
			moveFile(saveFile);
		}catch (Exception e){e.printStackTrace();}
	}	
	
	public void startPlaying(String file) {
		if (isPlaying==false) {
			try {
				mPlayer = new MediaPlayer();
				isPlaying=true;
				mPlayer.setDataSource("/sdcard/" + file);
				mPlayer.prepare();
				mPlayer.setOnCompletionListener(this);
				mPlayer.start();
			} catch (Exception e) { e.printStackTrace(); }
		}
	} 
	
	public void stopPlaying() {
		if (isPlaying) {
			mPlayer.stop();
			mPlayer.release();
			isPlaying=false;
		}
	}
	
	public void onCompletion(MediaPlayer mPlayer) {
		mPlayer.stop();
		mPlayer.release();
		isPlaying=false;
    } 
	
	public long getCurrentPosition() {
		if (isPlaying) 
		{
			return(mPlayer.getCurrentPosition());
		} else { return(-1); }
	}
	
	public long getDuration(String file) {
		long duration = -2;
		if (isPlaying==false) {
			try {
				mPlayer = new MediaPlayer();
				mPlayer.setDataSource("/sdcard/" + file);
				mPlayer.prepare();
				duration = mPlayer.getDuration();
				mPlayer.release();
			} catch (Exception e) { e.printStackTrace(); return(-1); }
			return duration;
		} else { return -1; }
	}
	
	protected void setAudioOutputDevice(String output){
		System.out.println ("Change audio setting to be "+output);
		AudioManager audiMgr = (AudioManager) mCtx.getSystemService(Context.AUDIO_SERVICE);
		if (output.contains("Speaker"))
			audiMgr.setRouting(AudioManager.MODE_NORMAL, AudioManager.ROUTE_SPEAKER, AudioManager.ROUTE_ALL);
		else if (output.contains("Earpiece")){
			audiMgr.setRouting(AudioManager.MODE_NORMAL, AudioManager.ROUTE_EARPIECE, AudioManager.ROUTE_ALL);
		}else
			System.out.println("input error");
			
	}
	protected int getAudioOutputDevice(){
		AudioManager audiMgr = (AudioManager) mCtx.getSystemService(Context.AUDIO_SERVICE);
		if (audiMgr.getRouting(AudioManager.MODE_NORMAL) == AudioManager.ROUTE_EARPIECE)
			return 1;
		else if (audiMgr.getRouting(AudioManager.MODE_NORMAL) == AudioManager.ROUTE_SPEAKER)
			return 2;
		else
			return -1;
	}
}