Mic

import android.media.AudioFormat;

import android.media.AudioManager;

import android.media.AudioRecord;

import android.media.AudioTrack;

import android.media.MediaRecorder;

import android.util.Log;

public class Mic {

private static final int RECORDER_SAMPLERATE = 48000;

private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_IN_STEREO;

private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;

short[] audioData;

private int bufferSize = 1024;

private AudioRecord recorder = null;

private AudioTrack audioTrack = null;

private Thread recordingThread = null;

private boolean isRecording = false;

private String output;

public Mic(String path) {

audioData = new short[bufferSize]; // short array that pcm data is put

Log.d("TEST", String.valueOf(bufferSize));

// into.

output = path;

}

public void startRecording() {

recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,

RECORDER_SAMPLERATE, RECORDER_CHANNELS,

RECORDER_AUDIO_ENCODING, bufferSize);

playAudioTrack();

int i = recorder.getState();

if (i == 1)

recorder.startRecording();

isRecording = true;

recordingThread = new Thread(new Runnable() {

@Override

public void run() {

writeAudioDataToFile();

}

}, "AudioRecorder Thread");

recordingThread.start();

}

private void playAudioTrack() {

audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC,

RECORDER_SAMPLERATE, //sample rate

RECORDER_CHANNELS, //2 channel

RECORDER_AUDIO_ENCODING, // 16-bit

bufferSize,

AudioTrack.MODE_STREAM );

audioTrack.play();

}

private void writeAudioDataToFile() {

byte[] data = new byte[bufferSize];

while (isRecording) {

recorder.read(data, 0, bufferSize);

audioTrack.write(data, 0, bufferSize);

}

}

public void stopRecording() {

if (null != recorder) {

isRecording = false;

int i = recorder.getState();

if (i == 1)

recorder.stop();

recorder.release();

recorder = null;

recordingThread = null;

}

}

}