private void DoRecording(AudioClient client)
{
int bufferSize = client.BufferSize;
long num = (long)(10000000.0 * (double)bufferSize / (double)this.waveFormat.SampleRate);
int millisecondsTimeout = (int)(num / 10000L / 2L);
int millisecondsTimeout2 = (int)(3L * num / 10000L);
AudioCaptureClient audioCaptureClient = client.AudioCaptureClient;
client.Start();
if (this.isUsingEventSync)
{
}
while (!this.requestStop)
{
bool flag = true;
if (this.isUsingEventSync)
{
flag = this.frameEventWaitHandle.WaitOne(millisecondsTimeout2, false);
}
else
{
Thread.Sleep(millisecondsTimeout);
}
if (!this.requestStop && flag)
{
this.ReadNextPacket(audioCaptureClient);
}
}
}
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 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)ReftimesPerSec *
bufferFrameCount / waveFormat.SampleRate);
int sleepMilliseconds = (int)(actualDuration / ReftimesPerMillisec / 2);
int waitMilliseconds = (int)(3 * actualDuration / ReftimesPerMillisec);
var capture = client.AudioCaptureClient;
lock (syncLock)
{
if (captureState != CaptureState.Starting)
{
return; // Client probably requested stop (or some other state change happened) before we actually started capturing.
}
client.Start();
captureState = CaptureState.Capturing;
}
while (captureState == CaptureState.Capturing)
{
bool readBuffer = true;
if (isUsingEventSync)
{
readBuffer = frameEventWaitHandle.WaitOne(waitMilliseconds, false);
}
else
{
Thread.Sleep(sleepMilliseconds);
}
if (captureState != CaptureState.Capturing)
{
break;
}
// If still recording and notification is ok
if (readBuffer)
{
ReadNextPacket(capture);
}
}
}
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);
}
}
}
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)ReftimesPerSec *
bufferFrameCount / waveFormat.SampleRate);
int sleepMilliseconds = (int)(actualDuration / ReftimesPerMillisec / 2);
int waitMilliseconds = (int)(3 * actualDuration / ReftimesPerMillisec);
var capture = client.AudioCaptureClient;
client.Start();
// avoid race condition where we stop immediately after starting
if (captureState == CaptureState.Starting)
{
captureState = CaptureState.Capturing;
}
while (captureState == CaptureState.Capturing)
{
bool readBuffer = true;
if (isUsingEventSync)
{
readBuffer = frameEventWaitHandle.WaitOne(waitMilliseconds, false);
}
else
{
Thread.Sleep(sleepMilliseconds);
}
if (captureState != CaptureState.Capturing)
{
break;
}
// If still recording and notification is ok
if (readBuffer)
{
ReadNextPacket(capture);
}
}
}
private void DoRecording(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();
Debug.WriteLine(string.Format("sleep: {0} ms", sleepMilliseconds));
while (!this.stop)
{
Thread.Sleep(sleepMilliseconds);
ReadNextPacket(capture);
}
}
private void CaptureThread(AudioClient client)
{
Debug.WriteLine(client.BufferSize);
int bufferFrameCount = audioClient.BufferSize;
// Calculate the actual duration of the allocated buffer.
var actualDuration = (long)((double)REFTIMES_PER_SEC *
bufferFrameCount / WaveFormat.SampleRate);
var sleepMilliseconds = (int)(actualDuration / REFTIMES_PER_MILLISEC / 2);
AudioCaptureClient capture = client.AudioCaptureClient;
client.Start();
try
{
Debug.WriteLine(string.Format("sleep: {0} ms", sleepMilliseconds));
while (!stop)
{
Thread.Sleep(sleepMilliseconds);
ReadNextPacket(capture);
}
}
finally
{
client.Stop();
if (RecordingStopped != null)
{
RecordingStopped(this, EventArgs.Empty);
}
// don't dispose - the AudioClient only gets disposed when WasapiCapture is disposed
}
Debug.WriteLine("stop wasapi");
}
private void DoRecording(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();
Debug.WriteLine(string.Format("sleep: {0} ms", sleepMilliseconds));
while (!this.stop)
{
Thread.Sleep(sleepMilliseconds);
ReadNextPacket(capture);
}
}
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 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);
}
}
}
private void InitializeAudioClient()
{
var enumerator = new MMDeviceEnumerator();
var captureDevice = enumerator.GetDefaultAudioEndpoint(DataFlow.Render, Role.Multimedia);
audioClient = captureDevice.AudioClient;
int recordBufferLength = samplingRate; // 20ms worth of recording
recordBuffer = new float[recordBufferLength * channelCount];
long requestedDuration = 10000 * period * 2;
audioClient.Initialize(AudioClientShareMode.Shared,
AudioClientStreamFlags.Loopback,
requestedDuration,
0,
WaveFormat.CreateIeeeFloatWaveFormat(samplingRate, channelCount),
Guid.Empty);
capClient = audioClient.AudioCaptureClient;
audioClient.Start();
}
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)ReftimesPerSec *
bufferFrameCount / waveFormat.SampleRate);
int sleepMilliseconds = (int)(actualDuration / ReftimesPerMillisec / 2);
int waitMilliseconds = (int)(3 * actualDuration / ReftimesPerMillisec);
var capture = client.AudioCaptureClient;
client.Start();
captureState = CaptureState.Capturing;
while (captureState == CaptureState.Capturing)
{
bool readBuffer = true;
if (isUsingEventSync)
{
readBuffer = frameEventWaitHandle.WaitOne(waitMilliseconds, false);
}
else
{
Thread.Sleep(sleepMilliseconds);
}
if (captureState != CaptureState.Capturing)
break;
// If still recording and notification is ok
if (readBuffer)
{
ReadNextPacket(capture);
}
}
}
private void CaptureThread(AudioClient client)
{
Debug.WriteLine(client.BufferSize);
int bufferFrameCount = audioClient.BufferSize;
// Calculate the actual duration of the allocated buffer.
var actualDuration = (long) ((double) REFTIMES_PER_SEC*
bufferFrameCount/WaveFormat.SampleRate);
var sleepMilliseconds = (int) (actualDuration/REFTIMES_PER_MILLISEC/2);
AudioCaptureClient capture = client.AudioCaptureClient;
client.Start();
try
{
Debug.WriteLine(string.Format("sleep: {0} ms", sleepMilliseconds));
while (!stop)
{
Thread.Sleep(sleepMilliseconds);
ReadNextPacket(capture);
}
}
finally
{
client.Stop();
if (RecordingStopped != null)
{
RecordingStopped(this, EventArgs.Empty);
}
// don't dispose - the AudioClient only gets disposed when WasapiCapture is disposed
}
Debug.WriteLine("stop wasapi");
}
