/// <summary>
/// Dispose
/// </summary>
public void Dispose()
{
StopRecording();
if (audioClient != null)
{
audioClient.Dispose();
audioClient = null;
}
}
/// <summary>
/// Dispose
/// </summary>
public void Dispose()
{
StopRecording();
if (captureThread != null)
{
captureThread.Join();
captureThread = null;
}
if (audioClient != null)
{
audioClient.Dispose();
audioClient = null;
}
}
private void CaptureThread(AudioClient client)
{
Debug.WriteLine(client.BufferSize);
int bufferFrameCount = audioClient.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);
AudioCaptureClient capture = client.AudioCaptureClient;
client.Start();
try
{
Debug.WriteLine(string.Format("sleep: {0} ms", sleepMilliseconds));
while (!this.stop)
{
Thread.Sleep(sleepMilliseconds);
ReadNextPacket(capture);
}
client.Stop();
if (RecordingStopped != null)
{
RecordingStopped(this, EventArgs.Empty);
}
}
finally
{
if (capture != null)
{
capture.Dispose();
}
if (client != null)
{
client.Dispose();
}
client = null;
capture = null;
}
System.Diagnostics.Debug.WriteLine("stop wasapi");
}
private void CaptureThread(AudioClient client)
{
Debug.WriteLine(client.BufferSize);
int bufferFrameCount = audioClient.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);
AudioCaptureClient capture = client.AudioCaptureClient;
client.Start();
try
{
Debug.WriteLine(string.Format("sleep: {0} ms", sleepMilliseconds));
while (!this.stop)
{
Thread.Sleep(sleepMilliseconds);
ReadNextPacket(capture);
}
client.Stop();
if (RecordingStopped != null)
{
RecordingStopped(this, null);
}
}
finally
{
if (capture != null)
{
capture.Dispose();
}
if (client != null)
{
client.Dispose();
}
client = null;
capture = null;
}
System.Diagnostics.Debug.WriteLine("stop wasapi");
}
private void DoRecording(AudioClient client)
{
Debug.WriteLine(client.BufferSize);
var buf = new Byte[client.BufferSize * bytesPerFrame];
int bufLength = 0;
int minPacketSize = waveFormat.AverageBytesPerSecond / 100; //100ms
IntPtr hEvent = NativeMethods.CreateEventEx(IntPtr.Zero, IntPtr.Zero, 0, EventAccess.EVENT_ALL_ACCESS);
client.SetEventHandle(hEvent);
try
{
AudioCaptureClient capture = client.AudioCaptureClient;
client.Start();
int packetSize = capture.GetNextPacketSize();
while (!this.stop)
{
IntPtr pData = IntPtr.Zero;
int numFramesToRead = 0;
AudioClientBufferFlags dwFlags = 0;
if (packetSize == 0)
{
if (NativeMethods.WaitForSingleObjectEx(hEvent, 100, true) != 0)
{
throw new Exception("Capture event timeout");
}
}
pData = capture.GetBuffer(out numFramesToRead, out dwFlags);
if ((int)(dwFlags & AudioClientBufferFlags.Silent) > 0)
{
pData = IntPtr.Zero;
}
if (numFramesToRead == 0) { continue; }
int capturedBytes = numFramesToRead * bytesPerFrame;
if (pData == IntPtr.Zero)
{
Array.Clear(buf, bufLength, capturedBytes);
}
else
{
Marshal.Copy(pData, buf, bufLength, capturedBytes);
}
bufLength += capturedBytes;
capture.ReleaseBuffer(numFramesToRead);
if (bufLength >= minPacketSize)
{
if (DataAvailable != null)
{
DataAvailable(this, new WaveInEventArgs(buf, bufLength));
}
bufLength = 0;
}
packetSize = capture.GetNextPacketSize();
}
}
catch (Exception ex)
{
RaiseRecordingStopped(ex);
Debug.WriteLine("stop wasapi");
}
finally
{
RaiseRecordingStopped(null);
NativeMethods.CloseHandle(hEvent);
client.Stop();
client.Dispose();
}
}
private void CaptureThread(AudioClient client)
{
Exception exception = null;
try
{
DoRecording(client);
}
catch (Exception e)
{
exception = e;
}
finally
{
client.Stop();
client.Dispose();
}
RaiseRecordingStopped(exception);
Debug.WriteLine("stop wasapi");
}