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The generator created/destroyed events get called on the audio thread, so avoid manipulating containers used on the game thread in the event. #rnx #rb phil.popp, aaron.mcleran #preflight 642db4d71d19c0312a39ab12 [CL 24937556 by charlie huguenard in ue5-main branch]
79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "MetasoundOutputSubsystem.h"
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#include "MetasoundGenerator.h"
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#include "MetasoundGeneratorHandle.h"
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#include "MetasoundSource.h"
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#include "MetasoundTrace.h"
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#include "Components/AudioComponent.h"
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#include "ProfilingDebugging/CpuProfilerTrace.h"
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bool UMetaSoundOutputSubsystem::WatchOutput(
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UAudioComponent* AudioComponent,
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const FName OutputName,
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const FOnMetasoundOutputValueChanged& OnOutputValueChanged,
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const FName AnalyzerName,
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const FName AnalyzerOutputName)
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{
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METASOUND_TRACE_CPUPROFILER_EVENT_SCOPE(UMetasoundOutputSubsystem::WatchOutput);
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if (nullptr == AudioComponent)
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{
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return false;
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}
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UMetasoundGeneratorHandle* Handle = nullptr;
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// Try to find an existing handle
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const uint64 AudioComponentId = AudioComponent->GetAudioComponentID();
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if (const TObjectPtr<UMetasoundGeneratorHandle>* FoundHandle = TrackedGenerators.FindByPredicate(
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[AudioComponentId](const TObjectPtr<UMetasoundGeneratorHandle> ExistingHandle)
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{
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return ExistingHandle->IsValid() && ExistingHandle->GetAudioComponentId() == AudioComponentId;
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}))
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{
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Handle = *FoundHandle;
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}
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// Create a new one
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else
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{
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Handle = UMetasoundGeneratorHandle::CreateMetaSoundGeneratorHandle(AudioComponent);
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TrackedGenerators.Add(Handle);
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}
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if (nullptr == Handle)
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{
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return false;
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}
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return Handle->WatchOutput(OutputName, OnOutputValueChanged, AnalyzerName, AnalyzerOutputName);
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}
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bool UMetaSoundOutputSubsystem::IsTickable() const
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{
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return TrackedGenerators.Num() > 0;
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}
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void UMetaSoundOutputSubsystem::Tick(float DeltaTime)
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{
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METASOUND_TRACE_CPUPROFILER_EVENT_SCOPE(UMetasoundOutputSubsystem::Tick);
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for (auto It = TrackedGenerators.CreateIterator(); It; ++It)
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{
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if (!(*It)->IsValid())
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{
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It.RemoveCurrent();
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}
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else
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{
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(*It)->UpdateWatchers();
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}
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}
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}
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TStatId UMetaSoundOutputSubsystem::GetStatId() const
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{
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RETURN_QUICK_DECLARE_CYCLE_STAT(UMetasoundGeneratorAccessSubsystem, STATGROUP_Tickables);
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}
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