public X3DAudioEngine()
{
_xaudio2 = new XAudio2();
_masteringVoice = new MasteringVoice(_xaudio2);
_deviceFormat = _xaudio2.GetDeviceDetails(0).OutputFormat;
_x3dAudio = new X3DAudio(_deviceFormat.ChannelMask);
Position = new Vector3D(0, 0, 0);
Rotation = System.Windows.Media.Media3D.Quaternion.Identity;
}
// This region is currently nor implemented nor exposed to the client
private void AudioEngineImpl(AudioDevice device)
{
try
{
XAudio2 = new XAudio2();
X3DAudio = new X3DAudio(Speakers.Stereo); // only stereo mode currently supported
XAudio2.CriticalError += XAudio2OnCriticalError;
MasteringVoice = new MasteringVoice(XAudio2, 2, (int)AudioSampleRate); // Let XAudio choose an adequate sampling rate for the platform and the configuration but not number of channels [force to stereo 2-channels].
if (!mediaEngineStarted)
{
// MediaManager.Startup(); <- MediaManager.Shutdown is buggy (do not set isStartUp to false) so we are forced to directly use MediaFactory.Startup here while sharpDX is not corrected.
MediaFactory.Startup(0x20070, 0);
mediaEngineStarted = true;
}
PlatformSpecificInit();
}
catch (DllNotFoundException exp)
{
State = AudioEngineState.Invalidated;
Logger.Warning("One or more of the XAudio and MediaFoundation dlls were not found on the computer. " +
"Audio functionalities will not fully work for the current game instance." +
"To fix the problem install or repair the installation of XAudio and Media Foundation. [Exception details: {0}]", exp.Message);
}
catch (SharpDX.SharpDXException exp)
{
State = AudioEngineState.Invalidated;
if (exp.ResultCode == XAudioErrorCodes.ErrorInvalidCall)
{
Logger.Warning("Initialization of the audio engine failed. This may be due to missing audio hardware or missing audio outputs. [Exception details: {0}]", exp.Message);
}
else if (exp.ResultCode == 0x8007007E)
{
Logger.Warning( "Audio engine initialization failed. This is probably due to missing dll on your computer. " +
"Please check that XAudio2 and MediaFoundation are correctly installed.[Exception details: {0}]", exp.Message);
}
else
{
Logger.Warning("Audio engine initialization failed. [Exception details: {0}]", exp.Message);
}
}
}
public MyX3DAudio(WaveFormatExtensible format)
{
m_x3dAudio = new X3DAudio(format.ChannelMask);
m_dsp = new DspSettings(1, format.Channels);
}
public MyX3DAudio(AudioEngine engine)
{
m_x3dAudio = new X3DAudio(engine.FinalMixFormat.ChannelMask);
m_dsp = new DspSettings(1, engine.FinalMixFormat.Channels);
}
/// <summary>
/// SharpDX X3DAudio sample. Plays a generated sound rotating around the listener.
/// </summary>
static void Main(string[] args)
{
var xaudio2 = new XAudio2();
using (var masteringVoice = new MasteringVoice(xaudio2))
{
// Instantiate X3DAudio
var x3dAudio = new X3DAudio(Speakers.Stereo);
var emitter = new Emitter
{
ChannelCount = 1,
CurveDistanceScaler = float.MinValue,
OrientFront = new Vector3(0, 0, 1),
OrientTop = new Vector3(0, 1, 0),
Position = new Vector3(0, 0, 0),
Velocity = new Vector3(0, 0, 0)
};
var listener = new Listener
{
OrientFront = new Vector3(0, 0, 1),
OrientTop = new Vector3(0, 1, 0),
Position = new Vector3(0, 0, 0),
Velocity = new Vector3(0, 0, 0)
};
var waveFormat = new WaveFormat(44100, 32, 1);
var sourceVoice = new SourceVoice(xaudio2, waveFormat);
int bufferSize = waveFormat.ConvertLatencyToByteSize(60000);
var dataStream = new DataStream(bufferSize, true, true);
int numberOfSamples = bufferSize/waveFormat.BlockAlign;
for (int i = 0; i < numberOfSamples; i++)
{
float value = (float) (Math.Cos(2*Math.PI*220.0*i/waveFormat.SampleRate)*0.5);
dataStream.Write(value);
}
dataStream.Position = 0;
var audioBuffer = new AudioBuffer
{Stream = dataStream, Flags = BufferFlags.EndOfStream, AudioBytes = bufferSize};
//var reverb = new Reverb();
//var effectDescriptor = new EffectDescriptor(reverb);
//sourceVoice.SetEffectChain(effectDescriptor);
//sourceVoice.EnableEffect(0);
sourceVoice.SubmitSourceBuffer(audioBuffer, null);
sourceVoice.Start();
Console.WriteLine("Play a sound rotating around the listener");
for (int i = 0; i < 1200; i++)
{
// Rotates the emitter
var rotateEmitter = Matrix.RotationY(i/5.0f);
var newPosition = Vector3.Transform(new Vector3(0, 0, 1000), rotateEmitter);
var newPositionVector3 = new Vector3(newPosition.X, newPosition.Y, newPosition.Z);
emitter.Velocity = (newPositionVector3 - emitter.Position)/0.05f;
emitter.Position = newPositionVector3;
// Calculate X3DAudio settings
var dspSettings = x3dAudio.Calculate(listener, emitter, CalculateFlags.Matrix | CalculateFlags.Doppler, 1, 2);
// Modify XAudio2 source voice settings
sourceVoice.SetOutputMatrix(1, 2, dspSettings.MatrixCoefficients);
sourceVoice.SetFrequencyRatio(dspSettings.DopplerFactor);
// Wait for 50ms
Thread.Sleep(50);
}
}
}