// readonly Int32 _bufferSize; // allocated bytes - may not be the same as bytes read
// /// <summary>
// /// The buffer-size in bytes.
// /// </summary>
// public int BufferSize
// {
// get { return _bufferSize; }
// }
#endregion properties
#region cTor
/// <summary>
/// Creates a new WaveOutBuffer.
/// </summary>
/// <param name="hWaveOut">WaveOut device to write to</param>
/// <param name="bufferSize">buffer size in bytes</param>
/// <param name="bufferFillStream">stream to provide more data</param>
/// <param name="waveOutLock">lock to protect WaveOut API's from being called on 2+ threads</param>
internal WaveOutBuffer(IntPtr hWaveOut, Int32 bufferSize, WaveFileReader bufferFillStream, object waveOutLock)
{
// _bufferSize = bufferSize;
_buffer = new byte[bufferSize];
_hBuffer = GCHandle.Alloc(_buffer, GCHandleType.Pinned);
_hWaveOut = hWaveOut;
_waveProvider = bufferFillStream;
_waveOutLock = waveOutLock;
_header = new WaveHeader();
_hHeader = GCHandle.Alloc(_header, GCHandleType.Pinned);
_header.dataBuffer = _hBuffer.AddrOfPinnedObject();
_header.bufferLength = bufferSize;
_header.loops = 1;
_hThis = GCHandle.Alloc(this);
_header.userData = (IntPtr)_hThis;
lock (_waveOutLock)
{
MultimediaException.Try(WaveInterop.waveOutPrepareHeader(_hWaveOut,
_header,
Marshal.SizeOf(_header)),
"waveOutPrepareHeader");
}
}
public static extern MultimediaResult waveOutUnprepareHeader(IntPtr hWaveOut,
WaveHeader lpWaveOutHdr,
int uSize);
public static extern MultimediaResult waveOutWrite(IntPtr hWaveOut,
WaveHeader lpWaveOutHdr,
int uSize);
