ScopedCom.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "HAL/Platform.h"
#include "Windows/WindowsPlatformMisc.h"
 
#include "Windows/AllowWindowsPlatformTypes.h"
THIRD_PARTY_INCLUDES_START
#include <combaseapi.h>
THIRD_PARTY_INCLUDES_END
#include "Windows/HideWindowsPlatformTypes.h"
 
namespace Audio
{
    struct FScopeComString final
    {
        LPTSTR StringPtr = nullptr;
 
        UE_NONCOPYABLE(FScopeComString)
 
        const LPTSTR Get() const
        {
            return StringPtr;
        }
 
        explicit operator bool() const
        {
            return Get() != nullptr;
        }
 
        FScopeComString(LPTSTR InStringPtr = nullptr)
            : StringPtr(InStringPtr)
        {}
 
        ~FScopeComString()
        {
            if (StringPtr)
            {
                CoTaskMemFree(StringPtr);
            }
        }
    };
 
    class FScopedCoInitialize final
    {
    public:
        FScopedCoInitialize()
        {
#if PLATFORM_WINDOWS
            bCoInitialized = FPlatformMisc::CoInitialize(ECOMModel::Multithreaded);
#endif  
        }
 
        ~FScopedCoInitialize()
        {
#if PLATFORM_WINDOWS
            if (bCoInitialized)
            {
                FPlatformMisc::CoUninitialize();
            }
#endif
        }
    private:
        bool bCoInitialized = false;
    };
 
}