Steam Audio tryout

2025-11-21 22:37:24 +02:00
parent ab737e016c
commit b25bde77fc
279 changed files with 18620 additions and 63 deletions
--- a/Assets/Plugins/SteamAudio/Scripts/Runtime/HRTF.cs
+++ b/Assets/Plugins/SteamAudio/Scripts/Runtime/HRTF.cs
@@ -0,0 +1,102 @@
+//
+// Copyright 2017-2023 Valve Corporation.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
+using System.Runtime.InteropServices;
+using UnityEngine;
+
+namespace SteamAudio
+{
+    public class HRTF
+    {
+        IntPtr mHRTF = IntPtr.Zero;
+
+        public HRTF(Context context, AudioSettings audioSettings, string sofaFileName, byte[] sofaFileData, float gaindB, HRTFNormType normType)
+        {
+            IntPtr sofaData = IntPtr.Zero;
+
+            var hrtfSettings = new HRTFSettings { };
+            if (sofaFileData != null && sofaFileData.Length > 0)
+            {
+                hrtfSettings.type = HRTFType.SOFA;
+
+                sofaData = Marshal.AllocHGlobal(sofaFileData.Length);
+                Marshal.Copy(sofaFileData, 0, sofaData, sofaFileData.Length);
+
+                hrtfSettings.sofaFileData = sofaData;
+                hrtfSettings.sofaFileDataSize = sofaFileData.Length;
+            }
+            else if (sofaFileName != null)
+            {
+                hrtfSettings.type = HRTFType.SOFA;
+                hrtfSettings.sofaFileName = sofaFileName;
+            }
+            else
+            {
+                hrtfSettings.type = HRTFType.Default;
+            }
+
+            hrtfSettings.volume = dBToGain(gaindB);
+            hrtfSettings.normType = normType;
+
+            var status = API.iplHRTFCreate(context.Get(), ref audioSettings, ref hrtfSettings, out mHRTF);
+            if (status != Error.Success)
+            {
+                Debug.LogError(string.Format("Unable to load HRTF: {0}. [{1}]", (sofaFileName != null) ? sofaFileName : "default", status));
+                mHRTF = IntPtr.Zero;
+            }
+            else
+            {
+                Debug.Log(string.Format("Loaded HRTF: {0}.", (sofaFileName != null) ? sofaFileName : "default"));
+            }
+
+            if (sofaData != IntPtr.Zero)
+            {
+                Marshal.FreeHGlobal(sofaData);
+            }
+        }
+
+        public HRTF(HRTF hrtf)
+        {
+            mHRTF = API.iplHRTFRetain(hrtf.Get());
+        }
+
+        ~HRTF()
+        {
+            Release();
+        }
+
+        public void Release()
+        {
+            API.iplHRTFRelease(ref mHRTF);
+        }
+
+        public IntPtr Get()
+        {
+            return mHRTF;
+        }
+
+        private float dBToGain(float gaindB)
+        {
+            const float kMinDBLevel = -90.0f;
+
+            if (gaindB <= kMinDBLevel)
+                return 0.0f;
+
+            return  (float) Math.Pow(10.0, (double) gaindB * (1.0 / 20.0));
+        }
+    }
+}