Class VideoSampleGrabberBlock

Video sample grabber block. Implements the MediaBlock. Implements the IMediaBlockInternals. Implements the IDisposable.

Inheritance

object

MediaBlock

VideoSampleGrabberBlock

Implements

IMediaBlock

IDisposable

IMediaBlockInternals

Inherited Members

MediaBlock._isBuilt

MediaBlock._pipeline

MediaBlock._pipelineCtx

MediaBlock.GetPipelineContext()

MediaBlock.SetPipeline(MediaBlocksPipeline)

MediaBlock.Context

MediaBlock.Name

MediaBlock.IsBuilt

MediaBlock.GetInputPadByType(MediaBlockPadMediaType)

MediaBlock.GetOutputPadByType(MediaBlockPadMediaType)

MediaBlock.GetFreeOutputPadByType(MediaBlockPadMediaType)

MediaBlock.ToYAMLBlock()

MediaBlock.ClearPads()

MediaBlock.disposedValue

MediaBlock.Dispose()

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: VisioForge.Core.MediaBlocks.VideoProcessing

Assembly: VisioForge.Core.dll

Syntax

public class VideoSampleGrabberBlock : MediaBlock, IMediaBlock, IDisposable, IMediaBlockInternals

Constructors

VideoSampleGrabberBlock(VideoFormatX, bool, bool)

Initializes a new instance of the VideoSampleGrabberBlock class.

Declaration

public VideoSampleGrabberBlock(VideoFormatX format = VideoFormatX.RGBA, bool addNullRenderer = false, bool nullRendererSync = false)

Parameters

Type	Name	Description
VideoFormatX	format	The format.
bool	addNullRenderer	if set to true add null renderer.
bool	nullRendererSync	if set to true null renderer synchronize.

Fields

TAG

The tag.

Declaration

protected const string TAG = "VideoSampleGrabberBlock"

Field Value

Type	Description
string

Properties

Input

Gets the input.

Declaration

public override MediaBlockPad Input { get; }

Property Value

Type	Description
MediaBlockPad	The input.

Overrides

MediaBlock.Input

Inputs

Gets the inputs.

Declaration

public override MediaBlockPad[] Inputs { get; }

Property Value

Type	Description
MediaBlockPad[]	The inputs.

Overrides

MediaBlock.Inputs

Output

Gets the output.

Declaration

public override MediaBlockPad Output { get; }

Property Value

Type	Description
MediaBlockPad	The output.

Overrides

MediaBlock.Output

Outputs

Gets the outputs.

Declaration

public override MediaBlockPad[] Outputs { get; }

Property Value

Type	Description
MediaBlockPad[]	The outputs.

Overrides

MediaBlock.Outputs

SaveLastFrame

Gets or sets a value indicating whether to save the last frame. You can use it to take a snapshot with GetFrame() method.

Declaration

public bool SaveLastFrame { get; set; }

Property Value

Type	Description
bool	true if save the last frame; otherwise, false.

Type

Gets the type.

Declaration

public override MediaBlockType Type { get; }

Property Value

Type	Description
MediaBlockType	The type.

Overrides

MediaBlock.Type

Methods

Build()

Builds this instance.

Declaration

public override bool Build()

Returns

Type	Description
bool	true if successfull, false otherwise.

Overrides

MediaBlock.Build()

CleanUp()

Cleans up.

Declaration

public void CleanUp()

Dispose(bool)

Releases unmanaged and - optionally - managed resources.

Declaration

protected override void Dispose(bool disposing)

Parameters

Type	Name	Description
bool	disposing	true to release both managed and unmanaged resources; false to release only unmanaged resources.

Overrides

MediaBlock.Dispose(bool)

GetCore()

Gets core.

Declaration

public BaseElement GetCore()

Returns

Type	Description
BaseElement	VisioForge.Core.GStreamer.Base.BaseElement.

GetElement()

Gets the element.

Declaration

public Element GetElement()

Returns

Type	Description
Element	Gst.Element.

GetLastFrame()

Gets the last frame.

Declaration

public VideoFrameX GetLastFrame()

Returns

Type	Description
VideoFrameX	VideoFrameX.

GetLastFrameAsBitmap()

Gets the last frame as a System.Drawing.Bitmap.

Declaration

public Bitmap GetLastFrameAsBitmap()

Returns

Type	Description
Bitmap	VideoFrameX.

GetLastFrameAsSKBitmap()

Gets the last frame as a SkiaSharp.SKBitmap.

Declaration

public SKBitmap GetLastFrameAsSKBitmap()

Returns

Type	Description
SKBitmap	VideoFrameX.

IsAvailable()

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

Declaration

public static bool IsAvailable()

Returns

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

Events

OnVideoFrameBitmap

This event occurs whenever each new video frame is received.

Declaration

public event EventHandler<VideoFrameBitmapEventArgs> OnVideoFrameBitmap

Event Type

Type	Description
EventHandler<VideoFrameBitmapEventArgs>

OnVideoFrameBuffer

This event occurs whenever each new video frame is received.

Declaration

public event EventHandler<VideoFrameXBufferEventArgs> OnVideoFrameBuffer

Event Type

Type	Description
EventHandler<VideoFrameXBufferEventArgs>

OnVideoFrameSKBitmap

This event occurs whenever each new video frame is received (SkiaSharp Bitmap).

Declaration

public event EventHandler<VideoFrameSKBitmapEventArgs> OnVideoFrameSKBitmap

Event Type

Type	Description
EventHandler<VideoFrameSKBitmapEventArgs>

Implements

IMediaBlock

IDisposable

IMediaBlockInternals

Extension Methods

MediaBlockHelper.SendEndOfStream(MediaBlock)

MediaBlockHelper.SendEvent(MediaBlock, Event)

MediaBlockHelper.SetState(MediaBlock, State)

See Also

MediaBlock

IMediaBlockInternals

IDisposable