private void AudioPluseMonitorWork()
{
uint bufferCount = 0;
int packageSize = -1;
int numberFramToRead = -1;
long devicePosition = 0;
long qpcPosition = 0;
AudioClientBufferFlags bufferFlag;
IntPtr packageBuffer = IntPtr.Zero;
var blockAlign = waveFormat.NBlockAlign;
var result = _audioClient.GetBufferSize(ref bufferCount);
// Calculate the actual duration of the allocated buffer.
var hnsActualDuration = (double)REFTIMES_PER_SEC *
bufferCount / waveFormat.NSamplesPerSec;
while (isAudioPluseMonitor)
{
Thread.Sleep((int)(hnsActualDuration / REFTIMES_PER_MILLISEC / 2));
result = _audioCaptureClient.GetNextPacketSize(out packageSize);
if (result == 0 && packageSize > 0)
{
while (packageSize > 0)
{
_audioCaptureClient.GetBuffer(out packageBuffer, out numberFramToRead, out bufferFlag, out devicePosition, out qpcPosition);
if (0 == numberFramToRead)
{
continue;
}
long lBytesToWrite = numberFramToRead * blockAlign;
if (AudioClientBufferFlags.Silent == bufferFlag)
{
_audiopluseCallBack(0, 0);
}
else
{
var pkgData = StructureToByteArray(packageBuffer);
ComputeDo3Band(pkgData, lBytesToWrite, waveFormat);
}
_audioCaptureClient.ReleaseBuffer(numberFramToRead);
result = _audioCaptureClient.GetNextPacketSize(out packageSize);
}
}
else
{
_audiopluseCallBack(0, 0);
}
}
}
/// <summary>
/// Gets the size of the next packet
/// </summary>
public int GetNextPacketSize()
{
int numFramesInNextPacket;
Marshal.ThrowExceptionForHR(audioCaptureClientInterface.GetNextPacketSize(out numFramesInNextPacket));
return(numFramesInNextPacket);
}
public void Read(Packet packet)
{
int captureSize = 0;
while (_continueProcessing && captureSize == 0)
{
Checked(_audioCaptureClient.GetNextPacketSize(out captureSize), "GetNextPacketSize");
if (captureSize == 0)
{
WaitHandle.WaitAny(new WaitHandle[] { _stopReading, _dataAvailable });
}
}
if (captureSize > 0)
{
_audioCaptureClient.GetBuffer(out var buffer, out var frames, out var flags, out var pos, out var s);
//TODO: investigate which is better
var time = _timeAdjuster.Add(s, Core.GetCurrentTime());
packet.InitFromBuffer(buffer, frames * _bytesPerFrame, time);
//Core.LogInfo($"DA: {frames * _bytesPerFrame} {s}");
_audioCaptureClient.ReleaseBuffer(frames);
}
else
{
throw new OperationCanceledException();
}
}
/// <summary>
/// Gets the size of the next packet
/// </summary>
public int GetNextPacketSize()
{
int numFramesInNextPacket;
int hresult = audioCaptureClientInterface.GetNextPacketSize(out numFramesInNextPacket);
if (hresult != 0)
{
this.EventWriterDLL.WriteLine(EventWriterDLL.SeverityTypes.Error, 0x01, "Error Code in AudioCaptureClient::GetNextPacketSize: " + hresult);
}
return(numFramesInNextPacket);
}
public void recordingloop()
{
uint packetLength;
uint numFramesAvailable;
uint flags;
ulong junk1;
ulong junk2;
byte[] pData;
uint AUDCLNT_BUFFERFLAGS_SILENT = 2;
uint bytespersample = (uint)(waveformat.nChannels * waveformat.wBitsPerSample / 8);
WaveFormat _wf = new WaveFormat((int)waveformat.nSamplesPerSec, (int)waveformat.wBitsPerSample, (int)waveformat.nChannels);
BE_CONFIG _mp3config = new BE_CONFIG(_wf);
Mp3Writer _mp3writer = new Mp3Writer(memStream, _wf, _mp3config);
int retVal = iAudioClient.Start();
if (retVal != 0)
{
throw new Exception("IAudioClient.Start()");
}
keepgoing = true;
while (keepgoing)
{
Thread.Sleep((int)(hnsActualDuration / 5000));
retVal = iAudioCaptureClient.GetNextPacketSize(out packetLength);
if (retVal != 0)
{
throw new Exception("iAudioCaptureClient.GetNextPacketSize()");
}
while (packetLength != 0)
{
IntPtr dataPtr = IntPtr.Zero;
retVal = iAudioCaptureClient.GetBuffer(out dataPtr, out numFramesAvailable, out flags, out junk1, out junk2);
if (retVal != 0)
{
throw new Exception("iAudioCaptureClient.GetBuffer()");
}
pData = new byte[bytespersample * numFramesAvailable];
if ((flags & AUDCLNT_BUFFERFLAGS_SILENT) != 0)
{
for (int i = 0; i < pData.Length; i++)
{
pData[i] = 0;
}
}
else
{
Marshal.Copy(dataPtr, pData, 0, (int)(bytespersample * numFramesAvailable));
}
retVal = iAudioCaptureClient.ReleaseBuffer(numFramesAvailable);
if (retVal != 0)
{
throw new Exception("iAudioCaptureClient.ReleaseBuffer()");
}
lock (synclock)
{
_mp3writer.Write(pData, 0, pData.Length);
}
if (notify != null)
{
notify();
}
retVal = iAudioCaptureClient.GetNextPacketSize(out packetLength);
if (retVal != 0)
{
throw new Exception("iAudioCaptureClient.GetNextPacketSize()");
}
}
}
_mp3writer.Close();
memStream.Close();
memStream.Dispose();
if (iAudioClient != null)
{
retVal = iAudioClient.Stop();
if (retVal != 0)
{
throw new Exception("iAudioClient.Stop()");
}
}
}