Class GLSobelBlock

Namespace

VisioForge.Core.MediaBlocks.OpenGL

Assembly

VisioForge.Core.dll

OpenGL-accelerated Sobel edge detection filter block for advanced computer vision and image analysis. Implements the Sobel operator, a first-order derivative filter that detects edges by computing gradients in horizontal and vertical directions, widely used for edge detection, feature extraction, and image sharpening in computer vision applications. Implements the VisioForge.Core.MediaBlocks.MediaBlock. Implements the VisioForge.Core.MediaBlocks.IMediaBlockInternals. Implements the IDisposable.

public class GLSobelBlock : MediaBlock, IMediaBlock, IDisposable, IMediaBlockInternals

Inheritance

object

MediaBlock

GLSobelBlock

Implements

IMediaBlock

IDisposable

IMediaBlockInternals

Inherited Members

MediaBlock._isBuilt

MediaBlock._pipeline

MediaBlock._pipelineCtx

MediaBlock.GetPipelineContext()

MediaBlock.SetPipelineContext(BlockPipelineContext)

MediaBlock.SetPipeline(MediaBlocksPipeline)

MediaBlock.Context

MediaBlock.Name

MediaBlock.IsBuilt

MediaBlock.Owner

MediaBlock.Type

MediaBlock.ID

MediaBlock.Input

MediaBlock.Inputs

MediaBlock.Output

MediaBlock.Outputs

MediaBlock.HasInputs

MediaBlock.HasOutputs

MediaBlock.Build()

MediaBlock.CreateElements()

MediaBlock.AddElementsToPipeline()

MediaBlock.RemoveElementsFromPipeline()

MediaBlock.DeepCopy(string)

MediaBlock.Reset()

MediaBlock.ToYAMLBlock()

MediaBlock.ClearPads()

MediaBlock.Dispose(bool)

MediaBlock.Dispose()

object.Equals(object?)

object.Equals(object?, object?)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object?, object?)

object.ToString()

Extension Methods

MediaBlockExtensions.GetInputPadByType(IMediaBlock, MediaBlockPadMediaType)

MediaBlockExtensions.GetOutputPadByType(IMediaBlock, MediaBlockPadMediaType)

MediaBlockHelper.SendEndOfStream(MediaBlock)

MediaBlockHelper.SendEvent(MediaBlock, Event)

MediaBlockHelper.SetState(MediaBlock, State)

Constructors

GLSobelBlock(GLSobelVideoEffect)

Initializes a new instance of the VisioForge.Core.MediaBlocks.OpenGL.GLSobelBlock class with the specified Sobel filter settings. Creates the necessary input and output pads for video processing with edge detection and gradient analysis.

public GLSobelBlock(GLSobelVideoEffect settings)

Parameters

settings GLSobelVideoEffect

The Sobel effect settings that define the edge detection parameters and gradient computation.

Properties

Input

Gets the primary input pad for receiving video frames to be edge-detected.

public override MediaBlockPad Input { get; }

Property Value

MediaBlockPad

Inputs

Gets all input pads available on this block (single input for video processing).

public override MediaBlockPad[] Inputs { get; }

Property Value

MediaBlockPad[]

Output

Gets the primary output pad for providing Sobel-processed video frames.

public override MediaBlockPad Output { get; }

Property Value

MediaBlockPad

Outputs

Gets all output pads available on this block (single output for processed video).

public override MediaBlockPad[] Outputs { get; }

Property Value

MediaBlockPad[]

Settings

Gets or sets the Sobel filter settings that control the edge detection sensitivity and gradient computation parameters.

public GLSobelVideoEffect Settings { get; set; }

Property Value

GLSobelVideoEffect

Type

Gets the media block type identifier for OpenGL Sobel operations.

public override MediaBlockType Type { get; }

Property Value

MediaBlockType

Methods

Build()

Builds and initializes the OpenGL Sobel edge detection block within the pipeline context. Creates the GStreamer Sobel filter, applies the edge detection settings, and establishes the necessary pad connections for processing video frames with gradient-based edge enhancement.

public override bool Build()

Returns

bool

true if the Sobel edge detection block was successfully built and configured; otherwise, false.

CleanUp()

Cleans up all resources associated with the OpenGL Sobel edge detection, including GStreamer elements and GPU shader programs.

public void CleanUp()

Dispose(bool)

Releases unmanaged and managed resources used by the OpenGL Sobel edge detection block. Properly disposes of GStreamer elements and GPU image processing shader 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 GStreamer element wrapper for advanced configuration and monitoring.

public BaseElement GetCore()

Returns

BaseElement

The BaseElement wrapper providing access to the underlying GStreamer Sobel filter.

GetElement()

Gets the native GStreamer element for direct GStreamer pipeline integration.

public Element GetElement()

Returns

Element

The native Gst.Element representing the Sobel edge detection filter.

IsAvailable()

Determines whether OpenGL Sobel edge detection functionality is available on the current system. Requires OpenGL support and appropriate GStreamer OpenGL image processing plugins to be installed.

public static bool IsAvailable()

Returns

bool

true if Sobel edge detection operations are supported; otherwise, false.

IMediaBlockInternals.SetContext(MediaBlocksPipeline)

Sets the pipeline context for this OpenGL Sobel edge detection block, providing access to the parent pipeline and logging context.

void IMediaBlockInternals.SetContext(MediaBlocksPipeline pipeline)

Parameters

pipeline MediaBlocksPipeline

The parent MediaBlocks pipeline containing this Sobel edge detection block.

See Also

MediaBlock

IMediaBlockInternals

IDisposable