internal override void Begin(byte[] wfx)
{
if (_deviceOpen)
{
throw new InvalidOperationException();
}
WAVEFORMATEX.AvgBytesPerSec(wfx, out _nAvgBytesPerSec, out _blockAlign);
MMSYSERR mMSYSERR;
lock (_noWriteOutLock)
{
mMSYSERR = SafeNativeMethods.waveOutOpen(ref _hwo, _curDevice, wfx, _delegate, IntPtr.Zero, 196608u);
if (_fPaused && mMSYSERR == MMSYSERR.NOERROR)
{
mMSYSERR = SafeNativeMethods.waveOutPause(_hwo);
}
_aborted = false;
_deviceOpen = true;
}
if (mMSYSERR != 0)
{
throw new AudioException(mMSYSERR);
}
_bytesWritten = 0;
_evt.Set();
}
/// <summary>
/// Begin to play
/// </summary>
internal override void Begin(byte[] wfx)
{
if (_deviceOpen)
{
System.Diagnostics.Debug.Assert(false);
throw new InvalidOperationException();
}
// Get the alignments values
WAVEFORMATEX.AvgBytesPerSec(wfx, out _nAvgBytesPerSec, out _blockAlign);
MMSYSERR result;
lock (_noWriteOutLock)
{
result = SafeNativeMethods.waveOutOpen(ref _hwo, _curDevice, wfx, _delegate, IntPtr.Zero, SafeNativeMethods.CALLBACK_FUNCTION);
if (_fPaused && result == MMSYSERR.NOERROR)
{
result = SafeNativeMethods.waveOutPause(_hwo);
}
// set the flags
_aborted = false;
_deviceOpen = true;
}
if (result != MMSYSERR.NOERROR)
{
throw new AudioException(result);
}
// Reset the counter for the number of bytes written so far
_bytesWritten = 0;
// Nothing in the queue
_evt.Set();
}