public double getAmplitude() {
if (mRecorder != null && started) {
return (mRecorder.getMaxAmplitude() / 2700.0);
} else {
return 0;
}
}
public void run() {
// int vuSize = 10 * mMediaRecorder.getMaxAmplitude() / 32768;
int ratio = mr.getMaxAmplitude() / BASE;
int db = (int) (20 * Math.log10(Math.abs(ratio)));
int value = db / RATIO;
if (value < 0) value = 0;
if (soundAmplitudeListen != null) soundAmplitudeListen.amplitude(ratio, db, value);
mHandler.postDelayed(mUpdateMicStatusTimer, postDelayed);
}
/**
* Returns the largest amplitude sampled since the last call to this method.
*
* @return returns the largest amplitude since the last call, or 0 when not in recording state.
*/
public int getMaxAmplitude() {
if (state == State.RECORDING) {
try {
return mRecorder.getMaxAmplitude();
} catch (IllegalStateException e) {
return 0;
}
} else {
return 0;
}
}
public double getAmplitude() {
if (recorder != null) {
try {
return (recorder.getMaxAmplitude());
} catch (Exception e) {
return 0;
}
} else {
return 0;
}
}
private void updateMicStatus() {
if (System.currentTimeMillis() - lastUpdate >= 1000) {
if (onRecordTimeChangeListener != null) {
onRecordTimeChangeListener.onRecordTimeCallback(
(System.currentTimeMillis() - startTime) / 1000);
}
lastUpdate = System.currentTimeMillis();
}
if (recorder != null) {
double ratio = (double) recorder.getMaxAmplitude() / BASE;
double db = 0; // 分贝
if (ratio > 1) db = 20 * Math.log10(ratio);
mRadius = (float) db;
invalidate();
mHandler.postDelayed(mUpdateMicStatusTimer, SPACE);
}
}
/**
* Returns the largest amplitude sampled since the last call to this method.
*
* @return returns the largest amplitude since the last call, or 0 when not in recording state.
*/
public int getMaxAmplitude() {
if (state == State.RECORDING) {
if (rUncompressed) {
int result = cAmplitude;
cAmplitude = 0;
return result;
} else {
try {
return mediaRecorder.getMaxAmplitude();
} catch (IllegalStateException e) {
return 0;
}
}
} else {
return 0;
}
}
public void button2Click(View v) throws IOException, IllegalStateException {
MediaRecorder recorder;
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile("/dev/null");
try {
recorder.prepare();
Log.d(LOG_TAG, "RECORDER Ok ");
} catch (IOException e) {
Log.d(LOG_TAG, "Error WITH RECORDER " + e);
e.printStackTrace();
}
recorder.start();
Log.d(LOG_TAG, "Start ");
for (int i = 0; i < 20; i++) {
// System.err.println("current amplitude is:"+recorder.getMaxAmplitude());
// System.err.println("current amplitude is:"+recorder.getMaxAmplitude());
// textView1.setText("current MIC amplitude is:"+"_"+recorder.getMaxAmplitude());
maxAmplitude = recorder.getMaxAmplitude();
Log.d(LOG_TAG, "MaxAmplitude = " + maxAmplitude);
if (maxAmplitude > 20000) {
sp.play(soundCuckoo, 1, 1, 0, 1, 1);
try {
Thread.sleep(2000);
} catch (Exception e) {
Log.d(LOG_TAG, "Error " + e);
}
}
try {
Thread.sleep(1000);
} catch (Exception e) {
Log.d(LOG_TAG, "Error " + e);
}
}
try {
recorder.stop();
} catch (Exception e) {
Log.d(LOG_TAG, "Error " + e);
}
recorder.reset();
recorder.release();
}
private void updateMicStatus() {
if (mMediaRecorder == null) {
return;
}
if (mRvRecord == null) {
return;
}
int m = mMediaRecorder.getMaxAmplitude();
int x = (6 * m / 32768); // 通过这种算法计算出的音量大小在1-7之间
switch (x) {
case 1:
mRvRecord.setmClipSize(330);
mRvRecord.invalidate();
break;
case 2:
mRvRecord.setmClipSize(210);
mRvRecord.invalidate();
break;
case 3:
mRvRecord.setmClipSize(190);
mRvRecord.invalidate();
break;
case 4:
mRvRecord.setmClipSize(100);
mRvRecord.invalidate();
break;
case 5:
mRvRecord.setmClipSize(60);
mRvRecord.invalidate();
break;
case 6:
mRvRecord.setmClipSize(30);
mRvRecord.invalidate();
break;
case 7:
mRvRecord.setmClipSize(0);
mRvRecord.invalidate();
break;
default:
mRvRecord.setmClipSize(500);
mRvRecord.invalidate();
break;
}
}
@Override
protected Void doInBackground(MediaRecorder... params) {
/*开始录音*/
MediaRecorder tmpMediaRecorder = params[0];
tmpMediaRecorder.start();
tmpMediaRecorder.setOnInfoListener(
new OnInfoListener() {
@Override
public void onInfo(MediaRecorder mr, int what, int extra) {
// TODO Auto-generated method stub
if (what == MediaRecorder.MEDIA_RECORDER_INFO_MAX_DURATION_REACHED) {
isMonitorRun = false;
}
}
});
/*开始监控*/
isMonitorRun = true;
while (isMonitorRun) {
int sVolumeValue = tmpMediaRecorder.getMaxAmplitude();
if (sVolumeValue > 0) {
mVolumeSize = 1000 * sVolumeValue / 32768;
mHandler.postAtTime(
new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
mViewVolume.setText(mVolumeSize + "");
}
},
500);
}
}
/*停止录音*/
tmpMediaRecorder.stop();
tmpMediaRecorder.release();
tmpMediaRecorder = null;
mCountDownTimer.cancel(); // 停止计时
return null;
}
public void run() {
int amplitude = mRecorder.getMaxAmplitude();
String debugTxt = "";
debugTxt = scaleGrayGradiance(amplitude, R.drawable.gray, 25000, 320, 350);
// txv_debug.setTag(debugTxt);
}
public double getAmplitude() {
if (mRecorder != null) return (mRecorder.getMaxAmplitude() / 2700.0);
else return 0;
}
/**
* M: get the current amplitude of MediaRecorder, used by VUMeter
*
* @return the amplitude value
*/
public int getMaxAmplitude() {
synchronized (this) {
if (null == mRecorder) {
return 0;
}
return (SoundRecorderService.STATE_RECORDING != mCurrentState)
? 0
: mRecorder.getMaxAmplitude();
}
}
