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- package com.example.asus.biometriksuara;
- import android.app.Activity;
- import android.content.Intent;
- import android.content.SharedPreferences;
- import android.media.AudioFormat;
- import android.media.AudioRecord;
- import android.media.MediaRecorder;
- import android.os.Bundle;
- import android.os.Environment;
- import android.util.Log;
- import android.view.View;
- import android.widget.Button;
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.FileNotFoundException;
- import java.io.FileOutputStream;
- import java.io.IOException;
- public class RecordAudioSample extends Activity {
- private static final int RECORDER_BPP = 16;
- private static final String AUDIO_RECORDER_FILE_EXT_WAV = ".wav";
- private static final String AUDIO_RECORDER_FOLDER = "AudioRecorder";
- private static final String AUDIO_RECORDER_TEMP_FILE = "record_temp.raw";
- private static final int RECORDER_SAMPLERATE = Constant.SampleRate;
- private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_IN_MONO;
- private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;
- private long VOICE_ID;
- private AudioRecord recorder = null;
- private int bufferSize = 0;
- private Thread recordingThread = null;
- private boolean isRecording = false;
- private String outFile = "";
- SharedPreferences prefs;
- SharedPreferences.Editor editor;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- setButtonHandlers();
- enableButtons(false);
- bufferSize = AudioRecord.getMinBufferSize(Constant.SampleRate,
- AudioFormat.CHANNEL_IN_MONO,
- AudioFormat.ENCODING_PCM_16BIT);
- }
- private void setButtonHandlers() {
- ((Button) findViewById(R.id.btnStart)).setOnClickListener(btnClick);
- ((Button) findViewById(R.id.btnStop)).setOnClickListener(btnClick);
- }
- private void enableButton(int id, boolean isEnable) {
- ((Button) findViewById(id)).setEnabled(isEnable);
- }
- private void enableButtons(boolean isRecording) {
- enableButton(R.id.btnStart, !isRecording);
- enableButton(R.id.btnStop, isRecording);
- }
- private String getFilename() {
- String filepath = Environment.getExternalStorageDirectory().getPath();
- File file = new File(filepath, AUDIO_RECORDER_FOLDER);
- if (!file.exists()) {
- file.mkdirs();
- }
- VOICE_ID = System.currentTimeMillis();
- return (file.getAbsolutePath() + "/" + VOICE_ID + AUDIO_RECORDER_FILE_EXT_WAV);
- }
- private String getTempFilename() {
- String filepath = Environment.getExternalStorageDirectory().getPath();
- File file = new File(filepath, AUDIO_RECORDER_FOLDER);
- if (!file.exists()) {
- file.mkdirs();
- }
- File tempFile = new File(filepath, AUDIO_RECORDER_TEMP_FILE);
- if (tempFile.exists())
- tempFile.delete();
- return (file.getAbsolutePath() + "/" + AUDIO_RECORDER_TEMP_FILE);
- }
- private void startRecording() {
- recorder = new AudioRecord(MediaRecorder.AudioSource.DEFAULT,
- RECORDER_SAMPLERATE, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING, bufferSize);
- 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 writeAudioDataToFile() {
- byte data[] = new byte[bufferSize];
- String filename = getTempFilename();
- FileOutputStream os = null;
- try {
- os = new FileOutputStream(filename);
- } catch (FileNotFoundException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- int read = 0;
- if (null != os) {
- while (isRecording) {
- read = recorder.read(data, 0, bufferSize);
- if (AudioRecord.ERROR_INVALID_OPERATION != read) {
- try {
- os.write(data);
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
- try {
- os.close();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
- private void stopRecording() {
- if (null != recorder) {
- isRecording = false;
- int i = recorder.getState();
- if (i == 1)
- recorder.stop();
- recorder.release();
- recorder = null;
- recordingThread = null;
- }
- copyWaveFile(getTempFilename(), getFilename());
- deleteTempFile();
- }
- private void deleteTempFile() {
- File file = new File(getTempFilename());
- file.delete();
- }
- private void copyWaveFile(String inFilename, String outFilename) {
- FileInputStream in = null;
- FileOutputStream out = null;
- long totalAudioLen = 0;
- long totalDataLen = totalAudioLen + 36;
- long longSampleRate = RECORDER_SAMPLERATE;
- int channels = 1;
- long byteRate = RECORDER_BPP * RECORDER_SAMPLERATE * channels / 8;
- byte[] data = new byte[bufferSize];
- try {
- in = new FileInputStream(inFilename);
- out = new FileOutputStream(outFilename);
- totalAudioLen = in.getChannel().size();
- totalDataLen = totalAudioLen + 36;
- AppLog.logString("File size: " + totalDataLen);
- WriteWaveFileHeader(out, totalAudioLen, totalDataLen,
- longSampleRate, channels, byteRate);
- while (in.read(data) != -1) {
- out.write(data);
- }
- in.close();
- out.close();
- outFile = outFilename;
- } catch (FileNotFoundException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- private void WriteWaveFileHeader(
- FileOutputStream out, long totalAudioLen,
- long totalDataLen, long longSampleRate, int channels,
- long byteRate) throws IOException {
- byte[] header = new byte[44];
- header[0] = 'R'; // RIFF/WAVE header
- header[1] = 'I';
- header[2] = 'F';
- header[3] = 'F';
- header[4] = (byte) (totalDataLen & 0xff);
- header[5] = (byte) ((totalDataLen >> 8) & 0xff);
- header[6] = (byte) ((totalDataLen >> 16) & 0xff);
- header[7] = (byte) ((totalDataLen >> 24) & 0xff);
- header[8] = 'W';
- header[9] = 'A';
- header[10] = 'V';
- header[11] = 'E';
- header[12] = 'f'; // 'fmt ' chunk
- header[13] = 'm';
- header[14] = 't';
- header[15] = ' ';
- header[16] = 16; // 4 bytes: size of 'fmt ' chunk
- header[17] = 0;
- header[18] = 0;
- header[19] = 0;
- header[20] = 1; // format = 1
- header[21] = 0;
- header[22] = (byte) channels;
- header[23] = 0;
- header[24] = (byte) (longSampleRate & 0xff);
- header[25] = (byte) ((longSampleRate >> 8) & 0xff);
- header[26] = (byte) ((longSampleRate >> 16) & 0xff);
- header[27] = (byte) ((longSampleRate >> 24) & 0xff);
- header[28] = (byte) (byteRate & 0xff);
- header[29] = (byte) ((byteRate >> 8) & 0xff);
- header[30] = (byte) ((byteRate >> 16) & 0xff);
- header[31] = (byte) ((byteRate >> 24) & 0xff);
- header[32] = (byte) (2 * 16 / 8); // block align
- header[33] = 0;
- header[34] = RECORDER_BPP; // bits per sample
- header[35] = 0;
- header[36] = 'd';
- header[37] = 'a';
- header[38] = 't';
- header[39] = 'a';
- header[40] = (byte) (totalAudioLen & 0xff);
- header[41] = (byte) ((totalAudioLen >> 8) & 0xff);
- header[42] = (byte) ((totalAudioLen >> 16) & 0xff);
- header[43] = (byte) ((totalAudioLen >> 24) & 0xff);
- out.write(header, 0, 44);
- }
- private View.OnClickListener btnClick = new View.OnClickListener() {
- @Override
- public void onClick(View v) {
- switch (v.getId()) {
- case R.id.btnStart: {
- AppLog.logString("Start Recording");
- enableButtons(true);
- startRecording();
- break;
- }
- case R.id.btnStop: {
- AppLog.logString("Start Recording");
- enableButtons(false);
- stopRecording();
- SharedPreferences prefs = (SharedPreferences) getSharedPreferences(Constant.PREF_RECORDER, MODE_PRIVATE);
- SharedPreferences.Editor editor = prefs.edit();
- if (outFile != "") {
- Log.d("SAVE_TMP_PREF", "Shared teh temp file in shared preferences . FIle: " + outFile);
- editor.putString(Constant.PREF_KEY_TMP_FILE, outFile);
- editor.commit();
- Intent i = new Intent();
- i.putExtra(Constant.PREF_KEY_TMP_FILE, outFile);
- if (getParent() == null) {
- setResult(Activity.RESULT_OK, i);
- } else {
- getParent().setResult(Activity.RESULT_OK, i);
- }
- } else {
- Log.d("SAVE_TMP_PREF", "Shared teh temp file in shared preferences is empty .File: " + outFile);
- }
- finish();
- break;
- }
- }
- }
- };
- }
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