84 lines
2.2 KiB
C#
84 lines
2.2 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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// Defaults based on FAUDIOFX_I3DL2_PRESET_GENERIC
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public static FAudio.FAudioFXReverbParameters DefaultParams = new FAudio.FAudioFXReverbParameters
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{
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WetDryMix = 100.0f,
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ReflectionsDelay = 7,
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ReverbDelay = 11,
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RearDelay = FAudio.FAUDIOFX_REVERB_DEFAULT_REAR_DELAY,
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PositionLeft = FAudio.FAUDIOFX_REVERB_DEFAULT_POSITION,
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PositionRight = FAudio.FAUDIOFX_REVERB_DEFAULT_POSITION,
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PositionMatrixLeft = FAudio.FAUDIOFX_REVERB_DEFAULT_POSITION_MATRIX,
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PositionMatrixRight = FAudio.FAUDIOFX_REVERB_DEFAULT_POSITION_MATRIX,
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EarlyDiffusion = 15,
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LateDiffusion = 15,
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LowEQGain = 8,
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LowEQCutoff = 4,
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HighEQGain = 8,
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HighEQCutoff = 6,
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RoomFilterFreq = 5000f,
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RoomFilterMain = -10f,
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RoomFilterHF = -1f,
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ReflectionsGain = -26.0200005f,
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ReverbGain = 10.0f,
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DecayTime = 1.49000001f,
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Density = 100.0f,
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RoomSize = FAudio.FAUDIOFX_REVERB_DEFAULT_ROOM_SIZE
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};
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public FAudio.FAudioFXReverbParameters Params { get; private set; }
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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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{
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InitialState = 1,
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OutputChannels = 1,
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pEffect = reverb
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};
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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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SetParams(DefaultParams);
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}
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public void SetParams(in FAudio.FAudioFXReverbParameters reverbParams)
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{
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Params = reverbParams;
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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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