MoviePlayerThreading.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "HAL/ThreadSafeCounter.h"
 
class FRunnable;
class FMoviePlayerWidgetRenderer;
class IMovieStreamer;
 
class FSlateLoadingSynchronizationMechanism
{
public:
    FSlateLoadingSynchronizationMechanism(
        TSharedPtr<FMoviePlayerWidgetRenderer, ESPMode::ThreadSafe> InWidgetRenderer,
        const TSharedPtr<IMovieStreamer, ESPMode::ThreadSafe>& InMovieStreamer);
    ~FSlateLoadingSynchronizationMechanism();
    
    void Initialize();
 
    void DestroySlateThread();
 
    bool IsSlateDrawPassEnqueued();
    void SetSlateDrawPassEnqueued();
    void ResetSlateDrawPassEnqueued();
 
    bool IsSlateMainLoopRunning();
    void SetSlateMainLoopRunning();
    void ResetSlateMainLoopRunning();
 
    void SlateThreadRunMainLoop();
    void SlateThreadInitFailed();
 
private:
 
    TAtomic<bool> bMainLoopRunning;
 
    FThreadSafeCounter IsRunningSlateMainLoop;
    FThreadSafeCounter IsSlateDrawEnqueued;
 
    static FThreadSafeCounter LoadingThreadInstanceCounter;
 
    FRunnableThread* SlateLoadingThread;
    FRunnable* SlateRunnableTask;
 
    TSharedPtr<FMoviePlayerWidgetRenderer, ESPMode::ThreadSafe> WidgetRenderer;
    TSharedPtr<IMovieStreamer, ESPMode::ThreadSafe> MovieStreamer;
};