Table of Contents

Class NVDataDownloadBlock

Namespace
VisioForge.Core.MediaBlocks.Nvidia
Assembly
VisioForge.Core.dll

NVIDIA data download block for transferring video data from GPU to system memory. This block efficiently downloads video frames from NVIDIA GPU memory (CUDA) back to system memory for further processing or output. It's an essential component in GPU-accelerated pipelines where data needs to be transferred from GPU after hardware processing. Supports high-performance memory transfers with minimal CPU overhead, optimized for NVIDIA CUDA architecture. Commonly used after GPU-based video processing, encoding, or effects to bring data back for CPU processing or display. Implements the VisioForge.Core.MediaBlocks.MediaBlock. Implements the VisioForge.Core.MediaBlocks.IMediaBlockInternals. Implements the IDisposable.

public class NVDataDownloadBlock : MediaBlock, IMediaBlock, IDisposable, IMediaBlockInternals

Inheritance

Implements

Inherited Members

Extension Methods

Constructors

NVDataDownloadBlock()

Initializes a new instance of the VisioForge.Core.MediaBlocks.Nvidia.NVDataDownloadBlock class. Creates a GPU-to-CPU memory transfer block for NVIDIA hardware acceleration.

public NVDataDownloadBlock()

Properties

Input

Gets the input.

public override MediaBlockPad Input { get; }

Property Value

MediaBlockPad

Inputs

Gets the inputs.

public override MediaBlockPad[] Inputs { get; }

Property Value

MediaBlockPad[]

Output

Gets the output.

public override MediaBlockPad Output { get; }

Property Value

MediaBlockPad

Outputs

Gets the outputs.

public override MediaBlockPad[] Outputs { get; }

Property Value

MediaBlockPad[]

Type

Gets the type.

public override MediaBlockType Type { get; }

Property Value

MediaBlockType

Methods

Build()

Constructs and initializes the NVIDIA data download element within the pipeline. This method creates the GPU download element, establishes input and output pads, and prepares the block for high-performance GPU-to-CPU memory transfers.

public override bool Build()

Returns

bool

true if the download element was successfully built and configured; false if initialization failed.

CleanUp()

Releases all resources and performs cleanup operations for this NVIDIA data download block. This method disposes of the GPU download element and resets the build state.

public void CleanUp()

Dispose(bool)

Releases unmanaged and - optionally - managed resources.

protected override void Dispose(bool disposing)

Parameters

disposing bool

true to release both managed and unmanaged resources; false to release only unmanaged resources.

GetCore()

Gets the core BaseElement wrapper that provides additional functionality around the NVIDIA data download element.

public BaseElement GetCore()

Returns

BaseElement

The BaseElement wrapper instance that encapsulates the GPU download element.

GetElement()

Gets the underlying GStreamer element that performs the GPU memory download.

public Element GetElement()

Returns

Element

The GStreamer Element instance representing the NVIDIA data downloader.

IsAvailable()

Determines whether this media block is available. Correct NuGet SDK redist should be included into your project. Checks for NVIDIA GPU hardware and required CUDA libraries.

public static bool IsAvailable()

Returns

bool

true if NVIDIA hardware acceleration is available; otherwise, false.

IMediaBlockInternals.SetContext(MediaBlocksPipeline)

Associates this NVIDIA data download block with a pipeline and initializes its internal context. This method is called internally when the block is added to a pipeline.

void IMediaBlockInternals.SetContext(MediaBlocksPipeline pipeline)

Parameters

pipeline MediaBlocksPipeline

The MediaBlocksPipeline instance that will manage this block.

See Also