AudioDerivedData.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "DerivedDataPluginInterface.h"
 
#include "AudioDerivedData.generated.h"
 
class IAudioFormat;
class USoundWave;
struct FPlatformAudioCookOverrides;
struct FAudioCookInputs;
 
 
USTRUCT()
struct FAudioCookOutputs
{
    GENERATED_BODY()
 
    
    static uint32 GetId()
    {
        // Magic value is "ACO"
        return ((uint32)'O' << 16 | (uint32)'C' << 8 | (uint32)'A');
    }
 
    static int32 GetVersion();
 
    bool Serialize(FArchive& Ar);
 
    UPROPERTY()
    uint32 Id = GetId();
    
    UPROPERTY()
    int32 Version = GetVersion();
 
    UPROPERTY()
    int32 NumChannels = 0;
 
    UPROPERTY()
    int32 SampleRate = 0;
 
    UPROPERTY()
    uint32 NumFrames = 0;
 
    UPROPERTY()
    TArray<uint8> EncodedData;
};
 
class FDerivedAudioDataCompressor : public FDerivedDataPluginInterface
{
private:
    TUniquePtr<FAudioCookInputs> CookInputs;
 
public:
    ENGINE_API FDerivedAudioDataCompressor(USoundWave* InSoundNode, FName InBaseFormat, FName InHashedFormat, const FPlatformAudioCookOverrides* InCompressionOverrides, const ITargetPlatform* InTargetPlatform=nullptr);
 
    virtual const TCHAR* GetPluginName() const override
    {
        return TEXT("Audio");
    }
 
    virtual const TCHAR* GetVersionString() const override;
 
    virtual FString GetPluginSpecificCacheKeySuffix() const override;
    
    virtual bool IsBuildThreadsafe() const override;
 
    virtual bool Build(TArray<uint8>& OutData) override;
 
    virtual FString GetDebugContextString() const override;
};