Table of Contents

Class SMPTEAlphaBlock

Namespace
VisioForge.Core.MediaBlocks.VideoProcessing
Assembly
VisioForge.Core.dll

SMPTE alpha transition video effect block that creates wipe transitions with alpha channel support. This block applies SMPTE standard transition patterns with transparency control, enabling seamless compositing of video layers with proper alpha blending. Essential for creating professional overlays, transparent transitions, and advanced compositing effects with full alpha channel support. Implements the VisioForge.Core.MediaBlocks.MediaBlock. Implements the VisioForge.Core.MediaBlocks.IMediaBlockInternals. Implements the IDisposable.

public class SMPTEAlphaBlock : MediaBlock, IMediaBlock, IDisposable, IMediaBlockInternals

Inheritance

Implements

Inherited Members

Extension Methods

Constructors

SMPTEAlphaBlock(SMPTEAlphaVideoEffect)

Initializes a new instance of the VisioForge.Core.MediaBlocks.VideoProcessing.SMPTEAlphaBlock class with specified SMPTE alpha effect settings.

public SMPTEAlphaBlock(SMPTEAlphaVideoEffect settings)

Parameters

settings SMPTEAlphaVideoEffect

The SMPTE alpha effect configuration settings.

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[]

Settings

Gets or sets the SMPTE alpha effect settings. Contains parameters for controlling transition type, border, position, and direction of the SMPTE alpha wipe pattern.

public SMPTEAlphaVideoEffect Settings { get; set; }

Property Value

SMPTEAlphaVideoEffect

Type

Gets the type.

public override MediaBlockType Type { get; }

Property Value

MediaBlockType

Methods

Build()

Constructs and initializes the SMPTE alpha filter and its associated GStreamer elements. This method creates the filter with the specified SMPTE alpha settings, establishes input and output pads, and prepares the block for creating professional alpha-based transition effects with configurable patterns.

public override bool Build()

Returns

bool

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

CleanUp()

Releases all resources and performs cleanup operations for this SMPTE alpha effect block. This method disposes of the GStreamer elements 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 GStreamer SMPTE alpha filter element.

public BaseElement GetCore()

Returns

BaseElement

The BaseElement wrapper instance that encapsulates the GStreamer SMPTE alpha filter.

GetElement()

Gets the underlying GStreamer element that performs the SMPTE alpha transition processing.

public Element GetElement()

Returns

Element

The GStreamer Element instance representing the SMPTE alpha filter.

IsAvailable()

Determines whether this media block is available. Correct NuGet SDK redist should be included into your project.

public static bool IsAvailable()

Returns

bool

true if this media block is available; otherwise, false.

IMediaBlockInternals.SetContext(MediaBlocksPipeline)

Associates this SMPTE alpha effect 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