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;
}
public DirectSound(
Form form,
int sampleRate,
int bufferCount)
{
if ((sampleRate % 50) != 0)
{
throw new ArgumentOutOfRangeException("sampleRate", "Sample rate must be a multiple of 50!");
}
_sampleRate = sampleRate;
var bufferSize = sampleRate / 50;
for (int i = 0; i < bufferCount; i++)
{
_fillQueue.Enqueue(new uint[bufferSize]);
}
_bufferSize = bufferSize;
_bufferCount = bufferCount;
_zeroValue = 0;
var hWnd = form != null ? form.Handle : IntPtr.Zero;
_device = new DirectSound8();
_device.SetCooperativeLevel(hWnd, DSSCL.PRIORITY);
// we always use 16 bit stereo (uint per sample)
const short channels = 2;
const short bitsPerSample = 16;
const int sampleSize = 4; // channels * (bitsPerSample / 8);
var wf = new WaveFormat(_sampleRate, bitsPerSample, channels);
// Create a buffer
var bufferDesc = new DSBUFFERDESC();
bufferDesc.dwBufferBytes = _bufferSize * sampleSize * _bufferCount;
bufferDesc.dwFlags =
DSBCAPS_FLAGS.CTRLVOLUME |
DSBCAPS_FLAGS.CTRLPOSITIONNOTIFY |
DSBCAPS_FLAGS.GLOBALFOCUS |
DSBCAPS_FLAGS.GETCURRENTPOSITION2;
bufferDesc.Format = wf;
_soundBuffer = new SecondarySoundBuffer(_device, bufferDesc);
var posNotify = new DSBPOSITIONNOTIFY[_bufferCount];
for (int i = 0; i < posNotify.Length; i++)
{
posNotify[i] = new DSBPOSITIONNOTIFY();
posNotify[i].dwOffset = i * _bufferSize * sampleSize;
posNotify[i].WaitHandle = _fillEvent;
}
_soundBuffer.SetNotificationPositions(posNotify);
_wavePlayThread = new Thread(WavePlayThreadProc);
_wavePlayThread.IsBackground = true;
_wavePlayThread.Name = "WavePlay";
_wavePlayThread.Priority = ThreadPriority.Highest;
_wavePlayThread.Start();
}
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);
}
/// <summary>
///
/// </summary>
/// <param name="owner">owner window object</param>
public Performance(IWin32Window owner)
{
handle = DirectAudio.dx.DirectMusicPerformanceCreate();
this.handle = handle;
DMUS_AUDIOPARAMS param = new DMUS_AUDIOPARAMS();
DirectSound8 nullDs8 = null;
// TODO: learn more about this initialization process
handle.InitAudio(owner.Handle.ToInt32(),
CONST_DMUS_AUDIO.DMUS_AUDIOF_ALL,
ref param,
ref nullDs8,
CONST_DMUSIC_STANDARD_AUDIO_PATH.DMUS_APATH_DYNAMIC_STEREO, 16);
}
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.DSSCL_NORMAL); //use normal as default
if (!_directSound.SupportsFormat(_source.WaveFormat))
{
if (_source.WaveFormat.WaveFormatTag == AudioEncoding.IeeeFloat)
{
_source = _source.ToSampleSource().ToWaveSource(16);
}
if (_directSound.SupportsFormat(new WaveFormat(_source.WaveFormat.SampleRate, 16, _source.WaveFormat.Channels, _source.WaveFormat.WaveFormatTag)))
{
_source = _source.ToSampleSource().ToWaveSource(16);
}
else if (_directSound.SupportsFormat(new WaveFormat(_source.WaveFormat.SampleRate, 8, _source.WaveFormat.Channels, _source.WaveFormat.WaveFormatTag)))
{
_source = _source.ToSampleSource().ToWaveSource(8);
}
else
{
throw new InvalidOperationException("Invalid WaveFormat. WaveFormat specified by parameter {_source} is not supported by this DirectSound-Device.");
}
if (!_directSound.SupportsFormat(_source.WaveFormat))
{
throw new InvalidOperationException("Invalid WaveFormat. WaveFormat specified by parameter {_source} is not supported by this DirectSound-Device.");
}
}
WaveFormat waveFormat = _source.WaveFormat;
int bufferSize = (int)waveFormat.MillisecondsToBytes(_latency);
_primaryBuffer = new DirectSoundPrimaryBuffer(_directSound);
_secondaryBuffer = new DirectSoundSecondaryBuffer(_directSound, waveFormat, bufferSize);
}
public void CanCreateDirectSound8()
{
DirectSound8.Create8((Guid)DirectSoundDevice.DefaultDevice).Dispose();
}
private DirectSound8 CreateDirectSound8()
{
return(DirectSound8.Create8((Guid)DirectSoundDevice.DefaultDevice));
}
