WaveInBuffer class

Hello,
Does anyone can help me to know which this class allows to do please and thanks for you:

public WaveInBuffer(IntPtr waveInHandle, int size)

{

m_WaveIn = waveInHandle;

m_HeaderHandle = GCHandle.Alloc(m_Header, GCHandleType.Pinned);

m_Header.dwUser = (IntPtr)GCHandle.Alloc(this);

m_HeaderData = new byte[size];

m_HeaderDataHandle = GCHandle.Alloc(m_HeaderData, GCHandleType.Pinned);

m_Header.lpData = m_HeaderDataHandle.AddrOfPinnedObject();

m_Header.dwBufferLength = size;

WaveInHelper.Try(WaveNative.waveInPrepareHeader(m_WaveIn, ref m_Header, Marshal.SizeOf(m_Header)));

}

~WaveInBuffer()

{

Dispose();

}

public void Dispose()

{

if (m_Header.lpData != IntPtr.Zero)

{

WaveNative.waveInUnprepareHeader(m_WaveIn, ref m_Header, Marshal.SizeOf(m_Header));

m_HeaderHandle.Free();

m_Header.lpData = IntPtr.Zero;

}

m_RecordEvent.Close();

if (m_HeaderDataHandle.IsAllocated)

m_HeaderDataHandle.Free();

GC.SuppressFinalize(this);

}

public int Size

{

get { return m_Header.dwBufferLength; }

}

public IntPtr Data

{

get { return m_Header.lpData; }

}

public bool Record()

{

lock (this)

{

m_RecordEvent.Reset();

m_Recording = WaveNative.waveInAddBuffer(m_WaveIn, ref m_Header, Marshal.SizeOf(m_Header)) == WaveNative.MMSYSERR_NOERROR;

return m_Recording;

}

public void WaitFor()

{

if (m_Recording)

m_Recording = m_RecordEvent.WaitOne();

else

Thread.Sleep(0);

}

private void OnCompleted()

{

m_RecordEvent.Set();

m_Recording = false;

}