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/SteamAudioReverbData.cs
+++ b/Assets/Plugins/SteamAudio/Scripts/Runtime/SteamAudioReverbData.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 UnityEngine;
+
+namespace SteamAudio
+{
+    /** Baked reverb data stored for a \c SteamAudioReverbDataPoint.
+     */
+    public class SteamAudioReverbData : ScriptableObject
+    {
+        /** Reverb times (in seconds), for use in a parametric reverb effect. One per frequency band. */
+        public float[] reverbTimes;
+
+        /** The energy field, stored in a row-major array of size (#channels x #bands x #bins). */
+        public float[] reverbEnergyField;
+
+        /** The number of channels in the energy field. */
+        public int reverbEnergyFieldNumChannels;
+
+        /** The number of bands in the energy field. */
+        public int reverbEnergyFieldNumBands;
+
+        /** The number of bins in the energy field. */
+        public int reverbEnergyFieldNumBins;
+
+        /** The impulse response, stored in a row-major array of size (#channels x #samples). */
+        public float[] reverbIR;
+
+        /** The number of channels in the impulse response. */
+        public int reverbIRNumChannels;
+
+        /** The number of samples in the impulse response. */
+        public int reverbIRNumSamples;
+
+        /** Initializes the reverb data to default (empty) values.
+         */
+        public void Initialize()
+        {
+            reverbTimes = new float[3];
+
+            reverbEnergyField = null;
+            reverbEnergyFieldNumChannels = 0;
+            reverbEnergyFieldNumBands = 0;
+            reverbEnergyFieldNumBins = 0;
+
+            reverbIR = null;
+            reverbIRNumChannels = 0;
+            reverbIRNumSamples = 0;
+        }
+
+        /** \return The total size of the impulse response (#channels x #samples).
+         */
+        public int GetImpulseResponseSize()
+        {
+            return sizeof(float) * reverbIR.Length;
+        }
+
+        /** \return The energy value stored for a particular channel, band, and bin.
+         * 
+         *  \param[in]  channel     The index of the channel.
+         *  \param[in]  band        The index of the band.
+         *  \param[in]  bin         The index of the bin.
+         */
+        public float GetEnergyFieldData(int channel, int band, int bin)
+        {
+            int index = (channel * reverbEnergyFieldNumBands * reverbEnergyFieldNumBins) + band * reverbEnergyFieldNumBins + bin;
+            return reverbEnergyField[index];
+        }
+
+        /** \return The total size of the energy field (#channels x #bands x #bins).
+         */
+        public int GetEnergyFieldSize()
+        {
+            return sizeof(float) * reverbEnergyField.Length;
+        }
+
+        /** \return The sample value stored for a particular channel and sample index.
+         * 
+         *  \param[in]  channel     The index of the channel.
+         *  \param[in]  sample      The index of the sample.
+         */
+        public float GetImpulseResponseData(int channel, int sample)
+        {
+            int index = (channel * reverbIRNumSamples) + sample;
+            return reverbIR[index];
+        }
+    }
+}