protected int getMinBufferSize()
{
int bufferSize = AudioRecord.getMinBufferSize(SAMPLE_RATE,
CHANNEL, FORMAT) * 10;
return(bufferSize);
}
public override bool initCapturer()
{
// get the minimum buffer size that can be used
int minRecBufSize = AudioRecord.getMinBufferSize(m_captureSettings.SampleRate, NUM_CHANNELS_CAPTURING == 1 ? AudioFormat.CHANNEL_IN_MONO : AudioFormat.CHANNEL_IN_STEREO, AudioFormat.ENCODING_PCM_16BIT);
// double size to be more safe
int recBufSize = minRecBufSize * 2;
// release the object
if (m_audioRecord != null)
{
m_audioRecord.release();
m_audioRecord = null;
}
try
{
m_audioRecord = new AudioRecord(AudioSource.VOICE_COMMUNICATION, m_captureSettings.SampleRate, NUM_CHANNELS_CAPTURING == 1 ? AudioFormat.CHANNEL_IN_MONO : AudioFormat.CHANNEL_IN_STEREO, AudioFormat.ENCODING_PCM_16BIT, recBufSize);
}
catch (Exception e)
{
Log.e(LOG_TAG, e.Message);
return(false);
}
// check that the audioRecord is ready to be used
if (m_audioRecord.State != AudioRecord.STATE_INITIALIZED)
{
Log.i(LOG_TAG, "Audio capture is not initialized " + m_captureSettings.SampleRate);
return(false);
}
m_shutdownCaptureThread = false;
(new Thread(m_captureThread)).Start();
return(true);
}