MediaTextureTracker.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "UObject/ObjectPtr.h"
#include "UObject/WeakObjectPtr.h"
#include "UObject/WeakObjectPtrTemplates.h"
 
#include "MediaTextureTracker.generated.h"
 
class AActor;
class UMediaTexture;
 
UENUM()
enum class EMediaTextureVisibleMipsTiles : uint8
{
    None = 0,
    Plane = 1,
    Sphere
};
 
enum class EMediaTextureTargetViewResolution : uint8
{
    None = 0,
    RenderResolution = 1 << 0,
    DisplayResolution = 1 << 1,
    All = RenderResolution | DisplayResolution
};
ENUM_CLASS_FLAGS(EMediaTextureTargetViewResolution);
 
struct FMediaTextureTrackerObject
{
    TWeakObjectPtr<class AActor> Object;
    float MipMapLODBias;
    EMediaTextureVisibleMipsTiles VisibleMipsTilesCalculations;
    FVector2D MeshRange;
    /* Mip level to upscale into lower quality mips. All levels including and above the specified value will be fully read. */
    int32 MipLevelToUpscale = -1;
    /* When this is enabled Media Plate will automatically try to figure out the best mip to upscale to reduce the load. */
    bool bAdaptivePoleMipUpscaling = false;
    /* Bitwise mask for the target displayed resolution of the media texture (used for mip level estimation). */
    EMediaTextureTargetViewResolution TargetViewResolutionMask = EMediaTextureTargetViewResolution::RenderResolution;
};
 
class FMediaTextureTracker
{
public:
    MEDIAASSETS_API static FMediaTextureTracker& Get();
 
    virtual ~FMediaTextureTracker() {}
 
    MEDIAASSETS_API void RegisterTexture(TSharedPtr<FMediaTextureTrackerObject, ESPMode::ThreadSafe>& InInfo, TObjectPtr<UMediaTexture> InTexture);
 
    MEDIAASSETS_API void UnregisterTexture(TSharedPtr<FMediaTextureTrackerObject, ESPMode::ThreadSafe>& InInfo, TObjectPtr<UMediaTexture> InTexture);
 
    MEDIAASSETS_API const TArray<TWeakPtr<FMediaTextureTrackerObject, ESPMode::ThreadSafe>>* GetObjects(TObjectPtr<UMediaTexture> InTexture) const;
 
    const TArray<TWeakObjectPtr<UMediaTexture>>& GetTextures() { return MediaTextures; }
 
protected:
    TMap<TWeakObjectPtr<UMediaTexture>, TArray<TWeakPtr<FMediaTextureTrackerObject, ESPMode::ThreadSafe>>> MapTextureToObject;
    TArray<TWeakObjectPtr<UMediaTexture>> MediaTextures;
};