Hi,
I'm trying to figure out how to use the AudioRecord class. I created
a callback with a logging message, but don't ever see it called. Do
you see anything wrong with what I'm doing? Do you have an example of
how to use the API?
Thanks,
Ben
import android.media.AudioFormat;
import android.media.AudioRecord;
import android.media.MediaRecorder;
import android.util.Log;
public class AudioListener {
public static final int DEFAULT_SAMPLE_RATE = 8000;
private static final int DEFAULT_BUFFER_SIZE = 4096;
private static final int CALLBACK_PERIOD = 4000; // 500 msec
(sample rate / callback period)
private final AudioRecord recorder;
public AudioListener() {
this(DEFAULT_SAMPLE_RATE);
}
private AudioListener(int sampleRate) {
recorder = new AudioRecord(MediaRecorder.AudioSource.DEFAULT,
sampleRate, AudioFormat.CHANNEL_CONFIGURATION_DEFAULT,
AudioFormat.ENCODING_DEFAULT, DEFAULT_BUFFER_SIZE);
}
public void start() {
recorder.setPositionNotificationPeriod(CALLBACK_PERIOD);
recorder.setRecordPositionUpdateListener(new
AudioRecord.OnRecordPositionUpdateListener() {
@Override
public void onMarkerReached(AudioRecord recorder) {
Log.e(this.getClass().getSimpleName(), "onMarkerReached
Called");
}
@Override
public void onPeriodicNotification(AudioRecord recorder) {
Log.e(this.getClass().getSimpleName(), "onPeriodicNotification
Called");
}
});
recorder.startRecording();
}
}
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