Table of Contents

Class DecklinkAudioSinkBlock

Namespace
VisioForge.Core.MediaBlocks.Decklink
Assembly
VisioForge.Core.dll

Provides audio output capabilities for Blackmagic DeckLink hardware devices. This block accepts audio streams and outputs them through professional DeckLink capture/playback cards, supporting high-quality audio output for broadcast and professional video production workflows. Implements the VisioForge.Core.MediaBlocks.MediaBlock. Implements the VisioForge.Core.MediaBlocks.IMediaBlockInternals. Implements the IDisposable.

public class DecklinkAudioSinkBlock : MediaBlock, IMediaBlock, IDisposable, IMediaBlockInternals

Inheritance

Implements

Inherited Members

Extension Methods

Constructors

DecklinkAudioSinkBlock(DecklinkAudioSinkSettings)

Initializes a new instance of the VisioForge.Core.MediaBlocks.Decklink.DecklinkAudioSinkBlock class. Creates a new DeckLink audio sink block configured with the specified settings.

public DecklinkAudioSinkBlock(DecklinkAudioSinkSettings settings)

Parameters

settings DecklinkAudioSinkSettings

The configuration settings specifying device, format, and audio output parameters.

Properties

Gets the primary input pad for receiving audio data. This sink block has a single input pad for audio streams.

public override MediaBlockPad Input { get; }

Property Value

MediaBlockPad

Gets an array containing all input pads for this block. DecklinkAudioSink has a single audio input pad.

public override MediaBlockPad[] Inputs { get; }

Property Value

MediaBlockPad[]

Gets the primary output pad. Returns null as this is a sink block with no outputs. Audio data is sent directly to the DeckLink hardware.

public override MediaBlockPad Output { get; }

Property Value

MediaBlockPad

Gets an array of output pads. Returns an empty array as this is a sink block.

public override MediaBlockPad[] Outputs { get; }

Property Value

MediaBlockPad[]

Gets or sets the configuration settings for the DeckLink audio output. These settings control device selection, audio format, channel configuration, and other output parameters.

public DecklinkAudioSinkSettings Settings { get; set; }

Property Value

DecklinkAudioSinkSettings

Gets the media block type identifier for this DeckLink audio sink.

public override MediaBlockType Type { get; }

Property Value

MediaBlockType

Methods

Builds and initializes the DeckLink audio sink element within the pipeline. This method creates the GStreamer element, configures it with the specified settings, and establishes the input pad connections.

public override bool Build()

Returns

bool

true if the build was successful; false if initialization failed.

Performs cleanup of internal resources including the GStreamer element. This method releases the DeckLink hardware resources and resets the build state.

public void CleanUp()

Dispose(bool)

Releases unmanaged and - optionally - managed resources. Ensures proper cleanup of DeckLink hardware resources and GStreamer elements.

protected override void Dispose(bool disposing)

Parameters

disposing bool

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

Gets the core GStreamer element wrapper for advanced manipulation. This provides access to the underlying DecklinkAudioSink element for direct GStreamer operations.

public BaseElement GetCore()

Returns

BaseElement

The BaseElement wrapper containing the DecklinkAudioSink GStreamer element.

Asynchronously enumerates all available DeckLink audio output devices on the system. This method scans for DeckLink hardware capable of audio output and returns device information.

public static Task<DecklinkAudioSinkInfo[]> GetDevicesAsync()

Returns

Task<DecklinkAudioSinkInfo[]>

A task that returns an array of VisioForge.Core.Types.X.Decklink.DecklinkAudioSinkInfo objects describing available devices.

Gets the raw GStreamer element for direct GStreamer API access. Use with caution as direct manipulation may interfere with the MediaBlocks pipeline.

public Element GetElement()

Returns

Element

The underlying GStreamer Gst.Element instance.

Determines whether DeckLink audio output functionality is available on the current system. This checks for the presence of required DeckLink drivers and GStreamer plugins. Correct NuGet SDK redist should be included into your project.

public static bool IsAvailable()

Returns

bool

true if DeckLink audio output is available; otherwise, false.

IMediaBlockInternals.SetContext(MediaBlocksPipeline)

Sets the pipeline context for this media block. This internal method is called by the MediaBlocks framework to establish the pipeline relationship.

void IMediaBlockInternals.SetContext(MediaBlocksPipeline pipeline)

Parameters

pipeline MediaBlocksPipeline

The MediaBlocksPipeline that owns this block.

See Also