private void InitializeInternal()
{
//Use Desktophandle as default handle
IntPtr handle = DSUtils.GetDesktopWindow();
IntPtr pdsound;
DirectSoundException.Try(NativeMethods.DirectSoundCreate8(ref _device, out pdsound, IntPtr.Zero),
"DSInterop", "DirectSoundCreate8");
_directSound = new DirectSound8(pdsound);
_directSound.SetCooperativeLevel(handle, DSCooperativeLevelType.Normal); //use normal as default
if (!_directSound.SupportsFormat(_source.WaveFormat))
{
if (_source.WaveFormat.WaveFormatTag == AudioEncoding.IeeeFloat) //directsound does not support ieeefloat
_source = _source.ToSampleSource().ToWaveSource(16);
WaveFormat format16Bit = (WaveFormat) _source.WaveFormat.Clone();
format16Bit.BitsPerSample = 16;
WaveFormat format8Bit = (WaveFormat)_source.WaveFormat.Clone();
format8Bit.BitsPerSample = 8;
if (_directSound.SupportsFormat(format16Bit))
_source = _source.ToSampleSource().ToWaveSource(16);
else if (_directSound.SupportsFormat(format8Bit))
_source = _source.ToSampleSource().ToWaveSource(8);
else
{
throw new NotSupportedException(
"WaveFormat of the source is not supported.");
}
if (!_directSound.SupportsFormat(_source.WaveFormat))
{
throw new NotSupportedException(
"WaveFormat of the source is not supported.");
}
}
WaveFormat waveFormat = _source.WaveFormat;
var bufferSize = (int) waveFormat.MillisecondsToBytes(_latency);
_primaryBuffer = new DirectSoundPrimaryBuffer(_directSound);
_secondaryBuffer = new DirectSoundSecondaryBuffer(_directSound, waveFormat, bufferSize * 2);
}
private void CleanupResources()
{
if (_directSoundNotify != null)
{
_directSoundNotify.Dispose();
_directSoundNotify = null;
}
if (_secondaryBuffer != null)
{
_secondaryBuffer.Stop();
_secondaryBuffer.Dispose();
_secondaryBuffer = null;
}
if (_primaryBuffer != null)
{
_primaryBuffer.Stop();
_primaryBuffer.Dispose();
_primaryBuffer = null;
}
if (_directSound != null)
{
_directSound.Dispose();
_directSound = null;
}
_isInitialized = false;
}
