129 lines
3.9 KiB
C#
129 lines
3.9 KiB
C#
//
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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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#if STEAMAUDIO_ENABLED
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using System;
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using System.Reflection;
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using UnityEngine;
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namespace SteamAudio
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{
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public sealed class FMODStudioAudioEngineSource : AudioEngineSource
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{
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bool mFoundDSP = false;
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FMODUnity.StudioEventEmitter mEventEmitter = null;
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FMOD.Studio.EventInstance mEventInstance;
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FMOD.DSP mDSP;
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SteamAudioSource mSteamAudioSource = null;
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int mHandle = -1;
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const int kSimulationOutputsParamIndex = 33;
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public override void Initialize(GameObject gameObject)
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{
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FindDSP(gameObject);
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mSteamAudioSource = gameObject.GetComponent<SteamAudioSource>();
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if (mSteamAudioSource)
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{
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mHandle = FMODStudioAPI.iplFMODAddSource(mSteamAudioSource.GetSource().Get());
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}
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}
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public override void Destroy()
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{
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mFoundDSP = false;
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if (mSteamAudioSource)
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{
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FMODStudioAPI.iplFMODRemoveSource(mHandle);
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}
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}
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public override void UpdateParameters(SteamAudioSource source)
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{
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CheckForChangedEventInstance();
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FindDSP(source.gameObject);
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if (!mFoundDSP)
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return;
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mDSP.setParameterInt(kSimulationOutputsParamIndex, mHandle);
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}
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void CheckForChangedEventInstance()
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{
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if (mEventEmitter != null)
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{
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var eventInstance = mEventEmitter.EventInstance;
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if (!eventInstance.Equals(mEventInstance))
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{
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// The event instance is different from the one we last used, which most likely means the
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// event-related objects were destroyed and re-created. Make sure we look for the DSP instance
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// when FindDSP is called next.
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mFoundDSP = false;
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}
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}
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else
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{
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// We haven't yet seen a valid event emitter component, so make sure we look for one when
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// FindDSP is called.
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mFoundDSP = false;
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}
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}
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void FindDSP(GameObject gameObject)
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{
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if (mFoundDSP)
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return;
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mEventEmitter = gameObject.GetComponent<FMODUnity.StudioEventEmitter>();
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if (mEventEmitter == null)
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return;
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mEventInstance = mEventEmitter.EventInstance;
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if (!mEventInstance.isValid())
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return;
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FMOD.ChannelGroup channelGroup;
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mEventInstance.getChannelGroup(out channelGroup);
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int numDSPs;
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channelGroup.getNumDSPs(out numDSPs);
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for (var i = 0; i < numDSPs; ++i)
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{
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channelGroup.getDSP(i, out mDSP);
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var dspName = "";
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var dspVersion = 0u;
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var dspNumChannels = 0;
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var dspConfigWidth = 0;
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var dspConfigHeight = 0;
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mDSP.getInfo(out dspName, out dspVersion, out dspNumChannels, out dspConfigWidth, out dspConfigHeight);
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if (dspName == "Steam Audio Spatializer")
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{
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mFoundDSP = true;
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return;
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}
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}
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}
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}
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}
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#endif
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