private void CaptureI16()
{
IntPtr ptr = IntPtr.Zero;
int totalSamples, samples = 0;
try
{
long a, b; AudioClientBufferFlags flags;
audioCaptureClient.GetBuffer(out ptr, out samples, out flags, out a, out b);
if (ptr == IntPtr.Zero || samples <= 0)
{
return;
}
totalSamples = samples * channelCount;
if (i16Buf == null || i16Buf.Length < totalSamples)
{
i16Buf = new short[totalSamples];
}
Marshal.Copy(ptr, i16Buf, 0, totalSamples);
}
finally
{
if (ptr != IntPtr.Zero)
{
audioCaptureClient.ReleaseBuffer(samples);
}
}
int index = 0;
while (index < samples)
{
int samplesToWrite = bufferSize - samplesWritten;
int samplesLeft = samples - index;
if (samplesToWrite > samplesLeft)
{
samplesToWrite = samplesLeft;
}
int sampleEnd = samplesWritten + samplesToWrite;
for (int c = 0; c < channelCount; c++)
{
float[] buffer = buffers[c];
int readIndex = index * channelCount + c;
for (int sample = samplesWritten; sample < sampleEnd; sample++, readIndex += channelCount)
{
buffer[sample] = i16Buf[readIndex] * (1.0f / 32768.0f);
}
}
index += samplesToWrite;
samplesWritten += samplesToWrite;
if (samplesWritten >= bufferSize)
{
receiveCallback(this, buffers);
samplesWritten = 0;
}
}
}
/// <summary>
/// Gets a pointer to the buffer
/// </summary>
/// <returns>Pointer to the buffer</returns>
public IntPtr GetBuffer(
out int numFramesToRead,
out AudioClientBufferFlags bufferFlags,
out long devicePosition,
out long qpcPosition)
{
IntPtr bufferPointer;
Marshal.ThrowExceptionForHR(audioCaptureClientInterface.GetBuffer(out bufferPointer, out numFramesToRead, out bufferFlags, out devicePosition, out qpcPosition));
return(bufferPointer);
}
/// <summary>
/// バッファの中の現在の1パケットを取得する
/// <remarks>バッファ内の全データを取得するには、NextPacketSizeが0になるまでGetBuffer()を繰り返す必要がある</remarks>
/// </summary>
/// <param name="data">取得したデータのバイト列</param>
/// <param name="numFramesToRead">取得したデータのフレーム数(ブロック単位)</param>
/// <param name="flags"></param>
/// <param name="devicePosition"></param>
/// <param name="qpcPosition"></param>
public void GetBuffer(
out byte[] data,
out uint numFramesToRead,
out AudioClientBufferFlags flags,
out ulong devicePosition,
out ulong qpcPosition)
{
lock (_lockObj)
{
IntPtr p;
int hr = _RealClient.GetBuffer(
out p, out numFramesToRead,
out flags, out devicePosition,
out qpcPosition);
Marshal.ThrowExceptionForHR(hr);
if (numFramesToRead == 0)
{
data = new byte[0];
}
else
{
int byteSize = (int)numFramesToRead * _Parent.MixFormat.nBlockAlign;
data = new byte[byteSize];
Marshal.Copy(p, data, 0, byteSize);
}
hr = _RealClient.ReleaseBuffer(numFramesToRead);
Marshal.ThrowExceptionForHR(hr);
}
}
private void ReadBuffer(Stream stream)
{
IntPtr p;
int count;
long devicePosition;
long qpcPosition;
AudioClientBufferFlags flags;
_capture.GetBuffer(out p, out count, out flags, out devicePosition, out qpcPosition);
Marshal.Copy(p, this.Buffer, 0, count * this.FrameSize);
_capture.ReleaseBuffer(count);
stream.Write(this.Buffer, 0, count * this.FrameSize);
}
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);
}
}
}
void Loop()
{
int padding = 0;
_IAudioClient.GetCurrentPadding(out padding);
while (true)
{
IntPtr pBuffer;
System.Threading.Thread.Sleep(1);
lock (this)
{
uint numFrame;
uint flag;
ulong position, hpTimer;
bool discontinuity = false;
_IAudioCaptureClient.GetBuffer(out pBuffer, out numFrame, out flag, out position, out hpTimer);
discontinuity = (flag & 1) != 0;
flag = (uint)(flag & ~1);
if (numFrame > 0 && flag == 0 && pBuffer.ToInt64() != 0)
{
byte[] buffer = GetBuffer((int)(numFrame * _FrameSize));
System.Runtime.InteropServices.Marshal.Copy(pBuffer, buffer, 0, (int)(numFrame * _FrameSize));
_IAudioCaptureClient.ReleaseBuffer(numFrame);
_Stream.PushFrame(buffer);
}
else
{
_IAudioCaptureClient.ReleaseBuffer(numFrame);
}
}
}
}
/// <summary>
/// Gets a pointer to the buffer
/// </summary>
/// <param name="numFramesToRead">Number of frames to read</param>
/// <param name="bufferFlags">Buffer flags</param>
/// <returns>Pointer to the buffer</returns>
public IntPtr GetBuffer(
out int numFramesToRead,
out AudioClientBufferFlags bufferFlags)
{
IntPtr bufferPointer;
long devicePosition;
long qpcPosition;
int hresult = audioCaptureClientInterface.GetBuffer(out bufferPointer, out numFramesToRead, out bufferFlags, out devicePosition, out qpcPosition);
if (hresult != 0)
{
this.EventWriterDLL.WriteLine(EventWriterDLL.SeverityTypes.Error, 0x01, "Error Code in AudioCaptureClient::GetBuffer: " + hresult);
}
return(bufferPointer);
}
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()");
}
}
}