103 lines
3.0 KiB
C#
Executable File
103 lines
3.0 KiB
C#
Executable File
//
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// Copyright 2017-2023 Valve Corporation.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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using System;
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using System.Runtime.InteropServices;
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using UnityEngine;
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namespace SteamAudio
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{
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public class HRTF
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{
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IntPtr mHRTF = IntPtr.Zero;
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public HRTF(Context context, AudioSettings audioSettings, string sofaFileName, byte[] sofaFileData, float gaindB, HRTFNormType normType)
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{
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IntPtr sofaData = IntPtr.Zero;
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var hrtfSettings = new HRTFSettings { };
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if (sofaFileData != null && sofaFileData.Length > 0)
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{
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hrtfSettings.type = HRTFType.SOFA;
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sofaData = Marshal.AllocHGlobal(sofaFileData.Length);
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Marshal.Copy(sofaFileData, 0, sofaData, sofaFileData.Length);
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hrtfSettings.sofaFileData = sofaData;
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hrtfSettings.sofaFileDataSize = sofaFileData.Length;
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}
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else if (sofaFileName != null)
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{
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hrtfSettings.type = HRTFType.SOFA;
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hrtfSettings.sofaFileName = sofaFileName;
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}
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else
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{
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hrtfSettings.type = HRTFType.Default;
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}
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hrtfSettings.volume = dBToGain(gaindB);
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hrtfSettings.normType = normType;
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var status = API.iplHRTFCreate(context.Get(), ref audioSettings, ref hrtfSettings, out mHRTF);
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if (status != Error.Success)
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{
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Debug.LogError(string.Format("Unable to load HRTF: {0}. [{1}]", (sofaFileName != null) ? sofaFileName : "default", status));
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mHRTF = IntPtr.Zero;
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}
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else
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{
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Debug.Log(string.Format("Loaded HRTF: {0}.", (sofaFileName != null) ? sofaFileName : "default"));
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}
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if (sofaData != IntPtr.Zero)
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{
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Marshal.FreeHGlobal(sofaData);
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}
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}
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public HRTF(HRTF hrtf)
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{
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mHRTF = API.iplHRTFRetain(hrtf.Get());
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}
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~HRTF()
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{
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Release();
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}
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public void Release()
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{
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API.iplHRTFRelease(ref mHRTF);
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}
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public IntPtr Get()
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{
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return mHRTF;
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}
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private float dBToGain(float gaindB)
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{
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const float kMinDBLevel = -90.0f;
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if (gaindB <= kMinDBLevel)
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return 0.0f;
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return (float) Math.Pow(10.0, (double) gaindB * (1.0 / 20.0));
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}
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}
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}
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