WaveInBuffer class

Question

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;

        }