private void Apply3D(Vector3 listenerForward, Vector3 listenerUp, Vector3 listenerPosition, Vector3 listenerVelocity, Vector3 emitterForward, Vector3 emitterUp, Vector3 emitterPosition, Vector3 emitterVelocity)
{
if (!Effect.AudioManager.IsSpatialAudioEnabled)
{
throw new InvalidOperationException("Spatial audio must be enabled first.");
}
if (emitter == null)
{
emitter = new Emitter();
}
emitter.OrientFront = emitterForward;
emitter.OrientTop = emitterUp;
emitter.Position = emitterPosition;
emitter.Velocity = emitterVelocity;
emitter.DopplerScaler = SoundEffect.DopplerScale;
emitter.CurveDistanceScaler = SoundEffect.DistanceScale;
emitter.ChannelCount = Effect.Format.Channels;
//TODO: work out what ChannelAzimuths is supposed to be.
if (emitter.ChannelCount > 1)
{
emitter.ChannelAzimuths = new float[emitter.ChannelCount];
}
if (listener == null)
{
listener = new Listener();
}
listener.OrientFront = listenerForward;
listener.OrientTop = listenerUp;
listener.Position = listenerPosition;
listener.Velocity = listenerVelocity;
if (dspSettings == null)
{
dspSettings = new DspSettings(Effect.Format.Channels, Effect.AudioManager.MasteringVoice.VoiceDetails.InputChannelCount);
}
CalculateFlags flags = CalculateFlags.Matrix | CalculateFlags.Doppler | CalculateFlags.LpfDirect;
if ((Effect.AudioManager.Speakers & Speakers.LowFrequency) > 0)
{
// On devices with an LFE channel, allow the mono source data to be routed to the LFE destination channel.
flags |= CalculateFlags.RedirectToLfe;
}
if (Effect.AudioManager.IsReverbEffectEnabled)
{
flags |= CalculateFlags.Reverb | CalculateFlags.LpfReverb;
if (!isReverbSubmixEnabled)
{
VoiceSendFlags sendFlags = Effect.AudioManager.IsReverbFilterEnabled ? VoiceSendFlags.UseFilter : VoiceSendFlags.None;
VoiceSendDescriptor[] outputVoices = new VoiceSendDescriptor[]
{
new VoiceSendDescriptor {
OutputVoice = Effect.AudioManager.MasteringVoice, Flags = sendFlags
},
new VoiceSendDescriptor {
OutputVoice = Effect.AudioManager.ReverbVoice, Flags = sendFlags
}
};
voice.SetOutputVoices(outputVoices);
isReverbSubmixEnabled = true;
}
}
Effect.AudioManager.Calculate3D(listener, emitter, flags, dspSettings);
voice.SetFrequencyRatio(dspSettings.DopplerFactor);
voice.SetOutputMatrix(Effect.AudioManager.MasteringVoice, dspSettings.SourceChannelCount, dspSettings.DestinationChannelCount, dspSettings.MatrixCoefficients);
if (Effect.AudioManager.IsReverbEffectEnabled)
{
if (reverbLevels == null || reverbLevels.Length != Effect.Format.Channels)
{
reverbLevels = new float[Effect.Format.Channels];
}
for (int i = 0; i < reverbLevels.Length; i++)
{
reverbLevels[i] = dspSettings.ReverbLevel;
}
voice.SetOutputMatrix(Effect.AudioManager.ReverbVoice, Effect.Format.Channels, 1, reverbLevels);
}
if (Effect.AudioManager.IsReverbFilterEnabled)
{
FilterParameters filterDirect = new FilterParameters
{
Type = FilterType.LowPassFilter,
// see XAudio2CutoffFrequencyToRadians() in XAudio2.h for more information on the formula used here
Frequency = 2.0f * (float)Math.Sin(X3DAudio.PI / 6.0f * dspSettings.LpfDirectCoefficient),
OneOverQ = 1.0f
};
voice.SetOutputFilterParameters(Effect.AudioManager.MasteringVoice, filterDirect);
if (Effect.AudioManager.IsReverbEffectEnabled)
{
FilterParameters filterReverb = new FilterParameters
{
Type = FilterType.LowPassFilter,
// see XAudio2CutoffFrequencyToRadians() in XAudio2.h for more information on the formula used here
Frequency = 2.0f * (float)Math.Sin(X3DAudio.PI / 6.0f * dspSettings.LpfReverbCoefficient),
OneOverQ = 1.0f
};
voice.SetOutputFilterParameters(Effect.AudioManager.ReverbVoice, filterReverb);
}
}
}
/// <summary>
/// Applies the 3D effect to the current sound effect instance.
/// </summary>
/// <param name="listenerAgent">Listener</param>
/// <param name="emitterAgent">Emitter</param>
private void Apply3D()
{
UpdateListener(Listener);
UpdateEmitter(Emitter);
var flags = Calculate3DFlags();
if (dspSettings == null)
{
dspSettings = new DspSettings(
this.Effect.WaveFormat.Channels,
this.Effect.GameAudio.MasteringVoice.VoiceDetails.InputChannelCount);
}
this.Effect.GameAudio.Calculate3D(listener, emitter, flags, dspSettings);
voice.SetFrequencyRatio(dspSettings.DopplerFactor);
voice.SetOutputMatrix(
this.Effect.GameAudio.MasteringVoice,
dspSettings.SourceChannelCount,
dspSettings.DestinationChannelCount,
dspSettings.MatrixCoefficients);
if (!this.Effect.GameAudio.UseReverb)
{
return;
}
if (reverbLevels?.Length != this.Effect.WaveFormat.Channels)
{
reverbLevels = new float[this.Effect.WaveFormat.Channels];
}
for (int i = 0; i < reverbLevels.Length; i++)
{
reverbLevels[i] = dspSettings.ReverbLevel;
}
voice.SetOutputMatrix(this.Effect.GameAudio.ReverbVoice, this.Effect.WaveFormat.Channels, 1, reverbLevels);
if (!this.Effect.GameAudio.UseReverbFilter)
{
return;
}
var filterDirect = new FilterParameters
{
Type = FilterType.LowPassFilter,
Frequency = 2.0f * (float)Math.Sin(MathUtil.Pi / 6.0f * dspSettings.LpfDirectCoefficient),
OneOverQ = 1.0f
};
voice.SetOutputFilterParameters(this.Effect.GameAudio.MasteringVoice, filterDirect);
var filterReverb = new FilterParameters
{
Type = FilterType.LowPassFilter,
Frequency = 2.0f * (float)Math.Sin(MathUtil.Pi / 6.0f * dspSettings.LpfReverbCoefficient),
OneOverQ = 1.0f
};
voice.SetOutputFilterParameters(this.Effect.GameAudio.ReverbVoice, filterReverb);
}
