private void ReadNextPacket(AudioCaptureClient capture)
{
int packetSize = capture.GetNextPacketSize();
int recordBufferOffset = 0;
//Debug.WriteLine(string.Format("packet size: {0} samples", packetSize / 4));
while (packetSize != 0)
{
int framesAvailable;
AudioClientBufferFlags flags;
IntPtr buffer = capture.GetBuffer(out framesAvailable, out flags);
int bytesAvailable = framesAvailable * bytesPerFrame;
// apparently it is sometimes possible to read more frames than we were expecting?
// fix suggested by Michael Feld:
int spaceRemaining = Math.Max(0, recordBuffer.Length - recordBufferOffset);
if (spaceRemaining < bytesAvailable && recordBufferOffset > 0)
{
if (DataAvailable != null)
{
DataAvailable(this, new WaveInEventArgs(recordBuffer, recordBufferOffset));
}
recordBufferOffset = 0;
}
// if not silence...
if ((flags & AudioClientBufferFlags.Silent) != AudioClientBufferFlags.Silent)
{
Marshal.Copy(buffer, recordBuffer, recordBufferOffset, bytesAvailable);
}
else
{
Array.Clear(recordBuffer, recordBufferOffset, bytesAvailable);
}
recordBufferOffset += bytesAvailable;
capture.ReleaseBuffer(framesAvailable);
packetSize = capture.GetNextPacketSize();
}
if (DataAvailable != null)
{
DataAvailable(this, new WaveInEventArgs(recordBuffer, recordBufferOffset));
}
}
private void DoRecording(AudioClient client)
{
Debug.WriteLine(String.Format("Client buffer frame count: {0}", client.BufferSize));
int bufferFrameCount = client.BufferSize;
// Calculate the actual duration of the allocated buffer.
long actualDuration = (long)((double)REFTIMES_PER_SEC *
bufferFrameCount / waveFormat.SampleRate);
int sleepMilliseconds = (int)(actualDuration / REFTIMES_PER_MILLISEC / 2);
int waitMilliseconds = (int)(3 * actualDuration / REFTIMES_PER_MILLISEC);
AudioCaptureClient capture = client.AudioCaptureClient;
client.Start();
if (isUsingEventSync)
{
Debug.WriteLine(string.Format("wait: {0} ms", waitMilliseconds));
}
else
{
Debug.WriteLine(string.Format("sleep: {0} ms", sleepMilliseconds));
}
while (!this.requestStop)
{
bool readBuffer = true;
if (isUsingEventSync)
{
readBuffer = frameEventWaitHandle.WaitOne(waitMilliseconds, false);
}
else
{
Thread.Sleep(sleepMilliseconds);
}
// If still playing and notification is ok
if (!this.requestStop && readBuffer)
{
ReadNextPacket(capture);
}
}
}
/// <summary>
/// Dispose
/// </summary>
public void Dispose()
{
if (audioClientInterface != null)
{
if (audioClockClient != null)
{
audioClockClient.Dispose();
audioClockClient = null;
}
if (audioRenderClient != null)
{
audioRenderClient.Dispose();
audioRenderClient = null;
}
if (audioCaptureClient != null)
{
audioCaptureClient.Dispose();
audioCaptureClient = null;
}
Marshal.ReleaseComObject(audioClientInterface);
audioClientInterface = null;
GC.SuppressFinalize(this);
}
}
private void ReadNextPacket(AudioCaptureClient capture)
{
int packetSize = capture.GetNextPacketSize();
int recordBufferOffset = 0;
//Debug.WriteLine(string.Format("packet size: {0} samples", packetSize / 4));
while (packetSize != 0)
{
int framesAvailable;
AudioClientBufferFlags flags;
IntPtr buffer = capture.GetBuffer(out framesAvailable, out flags);
int bytesAvailable = framesAvailable * bytesPerFrame;
// apparently it is sometimes possible to read more frames than we were expecting?
// fix suggested by Michael Feld:
int spaceRemaining = Math.Max(0, recordBuffer.Length - recordBufferOffset);
if (spaceRemaining < bytesAvailable && recordBufferOffset > 0)
{
if (DataAvailable != null) DataAvailable(this, new WaveInEventArgs(recordBuffer, recordBufferOffset));
recordBufferOffset = 0;
}
// if not silence...
if ((flags & AudioClientBufferFlags.Silent) != AudioClientBufferFlags.Silent)
{
Marshal.Copy(buffer, recordBuffer, recordBufferOffset, bytesAvailable);
}
else
{
Array.Clear(recordBuffer, recordBufferOffset, bytesAvailable);
}
recordBufferOffset += bytesAvailable;
capture.ReleaseBuffer(framesAvailable);
packetSize = capture.GetNextPacketSize();
}
if (DataAvailable != null)
{
DataAvailable(this, new WaveInEventArgs(recordBuffer, recordBufferOffset));
}
}
/// <summary>
/// Dispose
/// </summary>
public void Dispose()
{
if (audioClientInterface != null)
{
if (audioClockClient != null)
{
audioClockClient.Dispose();
audioClockClient = null;
}
if (audioRenderClient != null)
{
audioRenderClient.Dispose();
audioRenderClient = null;
}
if (audioCaptureClient != null)
{
audioCaptureClient.Dispose();
audioCaptureClient = null;
}
Marshal.ReleaseComObject(audioClientInterface);
audioClientInterface = null;
GC.SuppressFinalize(this);
}
}
