static void Main(string[] args)
{
DirectSound directSound = new DirectSound();
var form = new Form();
form.Text = "SharpDX - DirectSound Demo";
// Set Cooperative Level to PRIORITY (priority level can call the SetFormat and Compact methods)
//
directSound.SetCooperativeLevel(form.Handle, CooperativeLevel.Priority);
// Create PrimarySoundBuffer
var primaryBufferDesc = new SoundBufferDescription();
primaryBufferDesc.Flags = BufferFlags.PrimaryBuffer;
primaryBufferDesc.AlgorithmFor3D = Guid.Empty;
var primarySoundBuffer = new PrimarySoundBuffer(directSound, primaryBufferDesc);
// Play the PrimarySound Buffer
primarySoundBuffer.Play(0, PlayFlags.Looping);
// Default WaveFormat Stereo 44100 16 bit
WaveFormat waveFormat = new WaveFormat();
// Create SecondarySoundBuffer
var secondaryBufferDesc = new SoundBufferDescription();
secondaryBufferDesc.BufferBytes = waveFormat.ConvertLatencyToByteSize(60000);
secondaryBufferDesc.Format = waveFormat;
secondaryBufferDesc.Flags = BufferFlags.GetCurrentPosition2 | BufferFlags.ControlPositionNotify | BufferFlags.GlobalFocus |
BufferFlags.ControlVolume | BufferFlags.StickyFocus;
secondaryBufferDesc.AlgorithmFor3D = Guid.Empty;
var secondarySoundBuffer = new SecondarySoundBuffer(directSound, secondaryBufferDesc);
// Get Capabilties from secondary sound buffer
var capabilities = secondarySoundBuffer.Capabilities;
// Lock the buffer
DataStream dataPart2;
var dataPart1 =secondarySoundBuffer.Lock(0, capabilities.BufferBytes, LockFlags.EntireBuffer, out dataPart2);
// Fill the buffer with some sound
int numberOfSamples = capabilities.BufferBytes/waveFormat.BlockAlign;
for (int i = 0; i < numberOfSamples; i++)
{
double vibrato = Math.Cos(2 * Math.PI * 10.0 * i /waveFormat.SampleRate);
short value = (short) (Math.Cos(2*Math.PI*(220.0 + 4.0 * vibrato)*i/waveFormat.SampleRate)*16384); // Not too loud
dataPart1.Write(value);
dataPart1.Write(value);
}
// Unlock the buffer
secondarySoundBuffer.Unlock(dataPart1, dataPart2);
// Play the song
secondarySoundBuffer.Play(0, PlayFlags.Looping);
Application.Run(form);
}
bool InitializeDirectSound(IntPtr windowHandler)
{
try
{
// Initialize the direct sound interface pointer for the default sound device.
_DirectSound = new DirectSound();
// Set the cooperative level to priority so the format of the primary sound buffer can be modified.
if (_DirectSound.SetCooperativeLevel(windowHandler, CooperativeLevel.Priority) != Result.Ok)
return false;
// Setup the primary buffer description.
var buffer = new SoundBufferDescription();
buffer.Flags = BufferFlags.PrimaryBuffer | BufferFlags.ControlVolume;
buffer.AlgorithmFor3D = Guid.Empty;
// Get control of the primary sound buffer on the default sound device.
_PrimaryBuffer = new PrimarySoundBuffer(_DirectSound, buffer);
// Setup the format of the primary sound buffer.
// In this case it is a .
_PrimaryBuffer.Format = new WaveFormat(44100, 16, 2);
}
catch (Exception)
{
return false;
}
return true;
}
void ShutdownDirectSound()
{
// Release the primary sound buffer pointer.
if (_PrimaryBuffer != null)
{
_PrimaryBuffer.Dispose();
_PrimaryBuffer = null;
}
// Release the direct sound interface pointer.
if (_DirectSound != null)
{
_DirectSound.Dispose();
_DirectSound = null;
}
}