79 lines
2.4 KiB
C#
79 lines
2.4 KiB
C#
using System;
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using System.Runtime.InteropServices;
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namespace MoonWorks.Audio
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{
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/// <summary>
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/// Use this in conjunction with SourceVoice.SetReverbEffectChain to add reverb to a voice.
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/// </summary>
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public unsafe class ReverbEffect : SubmixVoice
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{
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public ReverbEffect(AudioDevice audioDevice, uint processingStage) : base(audioDevice, 1, audioDevice.DeviceDetails.OutputFormat.Format.nSamplesPerSec, processingStage)
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{
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/* Init reverb */
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IntPtr reverb;
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FAudio.FAudioCreateReverb(out reverb, 0);
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var chain = new FAudio.FAudioEffectChain();
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var descriptor = new FAudio.FAudioEffectDescriptor();
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descriptor.InitialState = 1;
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descriptor.OutputChannels = 1;
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descriptor.pEffect = reverb;
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chain.EffectCount = 1;
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chain.pEffectDescriptors = (nint) (&descriptor);
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FAudio.FAudioVoice_SetEffectChain(
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Handle,
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ref chain
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);
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FAudio.FAPOBase_Release(reverb);
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/* Init reverb params */
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// Defaults based on FAUDIOFX_I3DL2_PRESET_GENERIC
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FAudio.FAudioFXReverbParameters reverbParams;
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reverbParams.WetDryMix = 100.0f;
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reverbParams.ReflectionsDelay = 7;
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reverbParams.ReverbDelay = 11;
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reverbParams.RearDelay = FAudio.FAUDIOFX_REVERB_DEFAULT_REAR_DELAY;
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reverbParams.PositionLeft = FAudio.FAUDIOFX_REVERB_DEFAULT_POSITION;
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reverbParams.PositionRight = FAudio.FAUDIOFX_REVERB_DEFAULT_POSITION;
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reverbParams.PositionMatrixLeft = FAudio.FAUDIOFX_REVERB_DEFAULT_POSITION_MATRIX;
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reverbParams.PositionMatrixRight = FAudio.FAUDIOFX_REVERB_DEFAULT_POSITION_MATRIX;
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reverbParams.EarlyDiffusion = 15;
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reverbParams.LateDiffusion = 15;
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reverbParams.LowEQGain = 8;
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reverbParams.LowEQCutoff = 4;
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reverbParams.HighEQGain = 8;
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reverbParams.HighEQCutoff = 6;
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reverbParams.RoomFilterFreq = 5000f;
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reverbParams.RoomFilterMain = -10f;
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reverbParams.RoomFilterHF = -1f;
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reverbParams.ReflectionsGain = -26.0200005f;
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reverbParams.ReverbGain = 10.0f;
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reverbParams.DecayTime = 1.49000001f;
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reverbParams.Density = 100.0f;
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reverbParams.RoomSize = FAudio.FAUDIOFX_REVERB_DEFAULT_ROOM_SIZE;
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SetParams(reverbParams);
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}
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public void SetParams(in FAudio.FAudioFXReverbParameters reverbParams)
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{
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fixed (FAudio.FAudioFXReverbParameters* reverbParamsPtr = &reverbParams)
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{
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FAudio.FAudioVoice_SetEffectParameters(
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Handle,
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0,
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(nint) reverbParamsPtr,
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(uint) Marshal.SizeOf<FAudio.FAudioFXReverbParameters>(),
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0
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);
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}
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}
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}
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}
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