Table of Contents

Class RotateBlock

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

Video rotation block for precise angular transformation and orientation correction. This block provides smooth video rotation capabilities with sub-pixel accuracy using advanced interpolation algorithms. Features configurable rotation angles, center point adjustment, and anti-aliasing for high-quality results. Essential for correcting camera orientation, artistic rotation effects, device orientation handling, and video stabilization workflows requiring precise angular adjustments. Implements the VisioForge.Core.MediaBlocks.MediaBlock. Implements the VisioForge.Core.MediaBlocks.IMediaBlockInternals. Implements the IDisposable.

public class RotateBlock : MediaBlock, IMediaBlock, IDisposable, IMediaBlockInternals

Inheritance

Implements

Inherited Members

Extension Methods

Constructors

RotateBlock(double)

Initializes a new instance of the VisioForge.Core.MediaBlocks.VideoProcessing.RotateBlock class with the specified rotation angle.

public RotateBlock(double angleRadian)

Parameters

angleRadian double

The rotation angle in radians (positive = clockwise).

Properties

Angle

Gets or sets the rotation angle in radians. Positive values rotate clockwise, negative values rotate counter-clockwise.

public double Angle { get; set; }

Property Value

double

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 rotation filter and its associated GStreamer elements. This method creates the filter with the specified angle, establishes input and output pads, and prepares the block for precise angular transformation of video content.

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 rotation 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 rotate filter element.

public BaseElement GetCore()

Returns

BaseElement

The BaseElement wrapper instance that encapsulates the GStreamer rotate filter.

GetElement()

Gets the underlying GStreamer element that performs the video rotation.

public Element GetElement()

Returns

Element

The GStreamer Element instance representing the rotate 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 rotation 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