gistfile1.txt

include "MyProject.h"

#include "VideoCapture.h"

#include "Engine/Engine.h"

 

// Sets default values
// inherits from actor
AVideoCapture::AVideoCapture()

{

      // Set this actor to call Tick() every frame.  You can turn this off to improve performance if you don't need it.

       PrimaryActorTick.bCanEverTick = true;

 

       Capture = CreateDefaultSubobject<USceneCaptureComponent2D>("CaptureComponent");

       RootComponent = Capture;

       //TextureRenderTarget2D'/Game/Textures/RenderTarget.RenderTarget'

       staticConstructorHelpers::FObjectFinder<UTextureRenderTarget2D> renderTarget(TEXT("/Game/Textures/RenderTarget.RenderTarget"));

 

       if (renderTarget.Succeeded())

       {

             UE_LOG(LogClass, Log, TEXT("OMG! YES!"));

             Capture->TextureTarget = renderTarget.Object;

            

             VideoTexture = Cast<UTexture>(Capture->TextureTarget);

 

             // pixel format of 10 is RGBA

 //tarray of uint8

             VideoBuffer.Init(VideoTexture->Resource->GetSizeX() * VideoTexture->Resource->GetSizeY() * 4);

       }

 

      

 

}

 

// Called when the game starts or when spawned

void AVideoCapture::BeginPlay()

{

       Super::BeginPlay();

      

}

 

// Called every frame

void AVideoCapture::Tick( float DeltaTime )

{

       Super::Tick( DeltaTime );

 

       uint32 Stride = 0;

       FRHITexture2D* Texture2D = VideoTexture->Resource->TextureRHI->GetTexture2D();

      

       uint8* TextureBuffer = (uint8*)RHILockTexture2D(Texture2D, 0,RLM_WriteOnly, Stride, false);

 

       FMemory::Memcpy(TextureBuffer, VideoBuffer.GetData(), VideoBuffer.Num());

 

       RHIUnlockTexture2D(Texture2D, 0, false);

      

       /*

       from mediatextureresource.cpp in unreal engine source code

 

       if (CurrentFrame.IsValid())

       {

             // draw the latest video frame

             if (CurrentFrameTime != LastFrameTime)

             {

                    uint32 Stride = 0;

                    FRHITexture2D* Texture2D = TextureRHI->GetTexture2D();

                    uint8* TextureBuffer = (uint8*)RHILockTexture2D(Texture2D, 0, RLM_WriteOnly, Stride, false);

 

                    FMemory::Memcpy(TextureBuffer, CurrentFrame->GetData(), CurrentFrame->Num());

                    RHIUnlockTexture2D(Texture2D, 0, false);

 

                    LastFrameTime = CurrentFrameTime;

                    Cleared = false;

             }

       }

 

 

      

      

       */

}