1、录制音频wav (1)准备library-com.lqe.audio
//获取当前时间
private static String getSystemnFileName(Context context){
Calendar cal=Calendar.getInstance();
String year = String.valueOf(cal.get(Calendar.YEAR));
String month = String.valueOf(cal.get(Calendar.MONTH))+1;
String day = String.valueOf(cal.get(Calendar.DATE));
String hour;
if (cal.get(Calendar.AM_PM) == 0)
hour = String.valueOf(cal.get(Calendar.HOUR));
else
hour = String.valueOf(cal.get(Calendar.HOUR)+12);
String minute = String.valueOf(cal.get(Calendar.MINUTE));
String my_time_1 = year + month + day+hour+minute;
return my_time_1;
}
/**
* 判断是否有外部存储设备sdcard
* @return true | false
*/
public static boolean isSdcardExit(){
if (Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED))
return true;
else
return false;
}
/**
* 获取麦克风输入的原始音频流文件路径
* @return
*/
public static String getRawFilePath(Context context ){
String mAudioRawPath = "";
if(isSdcardExit()){
File file = new File(getDiskCachePath(context)+"/"+AUDIO_RAW_FILENAME);
if(!file.exists()){
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
mAudioRawPath = getDiskCachePath(context)+"/"+AUDIO_RAW_FILENAME;
}
return mAudioRawPath;
}
/**
* 获取编码后的WAV格式音频文件路径
* @return
*/
public static String getWavFilePath(Context context){
String mAudioWavPath = "";
if(isSdcardExit()){
File file = new File(getDiskCachePath(context)+"/"+AUDIO_WAV_FILENAME);
if(!file.exists()){
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
mAudioWavPath = getDiskCachePath(context)+"/"+AUDIO_WAV_FILENAME;
}
return mAudioWavPath;
}
/**
* 获取文件大小
* @param path,文件的绝对路径
* @return
*/
public static long getFileSize(String path){
File mFile = new File(path);
if(!mFile.exists())
return -1;
return mFile.length();
}
//获取缓存的地址
public static String getDiskCachePath(Context context) {
if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())
|| !Environment.isExternalStorageRemovable()) {
return context.getExternalCacheDir().getPath();
} else {
return context.getCacheDir().getPath();
}
}
} (3)获取音频文件wav public class AudioRecorderWav { // 缓冲区字节大小 private int bufferSizeInBytes = 0;
//AudioName裸音频数据文件 ，麦克风
private String AudioName = "";
//NewAudioName可播放的音频文件
private String NewAudioName = "";
private AudioRecord audioRecord;
private boolean isRecord = false;// 设置正在录制的状态
private static AudioRecorderWav mInstance;
private AudioRecorderWav(){
}
public synchronized static AudioRecorderWav getInstance()
{
if(mInstance == null)
mInstance = new AudioRecorderWav();
return mInstance;
}
public int startRecordAndFile(Context context) {
//判断是否有外部存储设备sdcard
if(AudioFileFuncWav.isSdcardExit())
{
if(isRecord)
{
return ErrorCode.E_STATE_RECODING;
}
else
{
if(audioRecord == null)
creatAudioRecord(context);
audioRecord.startRecording();
// 让录制状态为true
isRecord = true;
// 开启音频文件写入线程
new Thread(new AudioRecordThread()).start();
return ErrorCode.SUCCESS;
}
}
else
{
return ErrorCode.E_NOSDCARD;
}
}
public void stopRecordAndFile() {
close();
}
public long getRecordFileSize(){
return AudioFileFuncWav.getFileSize(NewAudioName);
}
private void close() {
if (audioRecord != null) {
System.out.println("stopRecord");
isRecord = false;//停止文件写入
audioRecord.stop();
audioRecord.release();//释放资源
audioRecord = null;
}
}
private void creatAudioRecord(Context context) {
// 获取音频文件路径
AudioName = AudioFileFuncWav.getRawFilePath(context);
NewAudioName = AudioFileFuncWav.getWavFilePath(context);
// 获得缓冲区字节大小
bufferSizeInBytes = AudioRecord.getMinBufferSize(AudioFileFuncWav.AUDIO_SAMPLE_RATE,
AudioFormat.CHANNEL_IN_STEREO, AudioFormat.ENCODING_PCM_16BIT);
// 创建AudioRecord对象
audioRecord = new AudioRecord(AudioFileFuncWav.AUDIO_INPUT, AudioFileFuncWav.AUDIO_SAMPLE_RATE,
AudioFormat.CHANNEL_IN_STEREO, AudioFormat.ENCODING_PCM_16BIT, bufferSizeInBytes);
}
class AudioRecordThread implements Runnable {
@Override
public void run() {
writeDateTOFile();//往文件中写入裸数据
copyWaveFile(AudioName, NewAudioName);//给裸数据加上头文件
}
}
/**
* 这里将数据写入文件，但是并不能播放，因为AudioRecord获得的音频是原始的裸音频，
* 如果需要播放就必须加入一些格式或者编码的头信息。但是这样的好处就是你可以对音频的 裸数据进行处理，比如你要做一个爱说话的TOM
* 猫在这里就进行音频的处理，然后重新封装 所以说这样得到的音频比较容易做一些音频的处理。
*/
private void writeDateTOFile() {
// new一个byte数组用来存一些字节数据，大小为缓冲区大小
byte[] audiodata = new byte[bufferSizeInBytes];
FileOutputStream fos = null;
int readsize = 0;
try {
File file = new File(AudioName);
if (file.exists()) {
file.delete();
}
fos = new FileOutputStream(file);// 建立一个可存取字节的文件
} catch (Exception e) {
e.printStackTrace();
}
while (isRecord == true) {
readsize = audioRecord.read(audiodata, 0, bufferSizeInBytes);
if (AudioRecord.ERROR_INVALID_OPERATION != readsize && fos!=null) {
try {
fos.write(audiodata);
} catch (IOException e) {
e.printStackTrace();
}
}
}
try {
if(fos != null)
fos.close();// 关闭写入流
} catch (IOException e) {
e.printStackTrace();
}
}
// 这里得到可播放的音频文件
private void copyWaveFile(String inFilename, String outFilename) {
FileInputStream in = null;
FileOutputStream out = null;
long totalAudioLen = 0;
long totalDataLen = totalAudioLen + 36;
long longSampleRate = AudioFileFuncWav.AUDIO_SAMPLE_RATE;
int channels = 2;
long byteRate = 16 * AudioFileFuncWav.AUDIO_SAMPLE_RATE * channels / 8;
byte[] data = new byte[bufferSizeInBytes];
try {
in = new FileInputStream(inFilename);
out = new FileOutputStream(outFilename);
totalAudioLen = in.getChannel().size();
totalDataLen = totalAudioLen + 36;
WriteWaveFileHeader(out, totalAudioLen, totalDataLen,
longSampleRate, channels, byteRate);
while (in.read(data) != -1) {
out.write(data);
}
in.close();
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 这里提供一个头信息。插入这些信息就可以得到可以播放的文件。
* 为我为啥插入这44个字节，这个还真没深入研究，不过你随便打开一个wav
* 音频的文件，可以发现前面的头文件可以说基本一样哦。每种格式的文件都有
* 自己特有的头文件。
*/
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] = 16; // 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);
}
(4)开始录制音频，结束录制音频，转码mp3
全局变量：
private int mState = -1; //-1:没再录制，0：录制wav
private int mp3State = -1; //-1:没转码，0：转码成功
private final static int CMD_RECORDFAIL = 2001;
private final static int CMD_RECORDING_TIME = 2000;
private final static int CMD_STOP = 2002;
private final static int CMD_FINISH = 2003;
private UIHandler uiHandler = new UIHandler();
private UIThread uiThread;
Bundle b = new Bundle();// 存放数据
File mp3File;//mp3转码文件
File externalCacheDir;
String function;
AnimationDrawable animationDrawable;
//开始录制 public void startRecorde(int mFlag) { if (mState != -1) { Log.e(mState + "1", "mState: " + mState); Message msg = new Message(); b.putInt("cmd", CMD_RECORDFAIL); b.putInt("msg", ErrorCode.E_STATE_RECODING); msg.setData(b); uiHandler.sendMessage(msg); // 向Handler发送消息,更新UI return; } int mResult = -1; AudioRecorderWav mRecord_1 = AudioRecorderWav.getInstance(); mResult = mRecord_1.startRecordAndFile(EcgActivity.this); if (mResult == ErrorCode.SUCCESS) { mState = mFlag; uiThread = new UIThread(); new Thread(uiThread).start(); } else { Message msg = new Message(); b.putInt("cmd", CMD_RECORDFAIL); b.putInt("msg", mResult); msg.setData(b); uiHandler.sendMessage(msg); // 向Handler发送消息,更新UI } } //结束录制 private void stopRecorder() { if(animationDrawable.isRunning()){ animationDrawable.stop(); } if (mState != -1) { AudioRecorderWav mRecord_1 = AudioRecorderWav.getInstance(); mRecord_1.stopRecordAndFile(); } if (uiThread != null) { uiThread.stopThread(); } if (uiHandler != null) uiHandler.removeCallbacks(uiThread); Message msg = new Message(); b.putInt("cmd", CMD_STOP); b.putInt("msg", mState); msg.setData(b); uiHandler.sendMessageDelayed(msg, 1000); // 向Handler发送消息,更新UI // mState = -1; } //UIHandler class UIHandler extends Handler { public UIHandler() { }
@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
Log.d("MyHandler", "handleMessage......");
super.handleMessage(msg);
Bundle b = msg.getData();
int vCmd = b.getInt("cmd");
Log.e("vCmd", "" + vCmd);
switch (vCmd) {
case CMD_RECORDING_TIME:
int vTime = b.getInt("msg");
Log.e("MyHandler", "正在录音中，已录制：" + vTime + " s");
break;
case CMD_STOP:
AudioRecorderWav mRecord = AudioRecorderWav.getInstance();
long mSize = mRecord.getRecordFileSize();
Log.e("MyHandler", "录音已停止.录音文件:" + AudioFileFuncWav.getWavFilePath(EcgActivity.this) + "文件大小：" + mSize);
// ToastUtils.showShort("录音已停止.录音文件:"+AudioFileFuncWav.getWavFilePath(EcgActivity.this)+"文件大小："+mSize); mp3File = new File(AudioFileFuncWav.getWavFilePath(EcgActivity.this)); tanstoMp3(mp3File); break; case CMD_FINISH: if (mState != -1) { stopRecorder(); } tvMailSend.setEnabled(true); tvMailSend.setClickable(true); tvRecord.setClickable(false); animationDrawable.stop(); break; default: break; } } } //UIThread class UIThread implements Runnable { int mTimeMill = 0; boolean vRun = true;
public void stopThread() {
vRun = false;
}
public void run() {
while (vRun) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mTimeMill++;
Message msg = new Message();
Bundle b = new Bundle();// 存放数据
b.putInt("cmd", CMD_RECORDING_TIME);
b.putInt("msg", mTimeMill);
Log.e("xrs2", "stop: " + mTimeMill);
msg.setData(b);
uiHandler.sendMessage(msg); // 向Handler发送消息,更新UI
}
}
}
//转成mp3 private void tanstoMp3(File file) { IConvertCallback callback = new IConvertCallback() { @Override public void onSuccess(File convertedFile) { // So fast? Love it! Log.e("MyHandlers", convertedFile.getPath().toString() + convertedFile.length()); mp3State = 1; }
@Override
public void onFailure(Exception error) {
// Oops! Something went wrong
Log.e("MyHandlers", "转码失败");
}
};
AndroidAudioConverter.with(this)
// Your current audio file
.setFile(file)
// Your desired audio format
.setFormat(AudioFormat.MP3)
// An callback to know when conversion is finished
.setCallback(callback)
// Start conversion
.convert();
}
