DxGather

DXGather is an element designed to merge multiple branches of a stream that originates from the same source, typically split using a GstTee. It recombines these branches back into a single synchronized output stream, ensuring efficient handling of shared content in multi-branch pipelines.

This makes DXGather ideal for scenarios where duplicated streams need to be reunited after parallel processing (e.g., detection, tracking, or visualization).

Key Features

PTS-Based Buffer Merging

• Merges buffers from multiple sink pads only when their Presentation Timestamps (PTS) match.
• Ensures that only synchronized frames are merged together.

Buffer and Metadata Handling

• Assumes that buffer content is identical across all input branches.
• Retains one buffer while others are unreferenced.
• Merges metadata from all branches into the resulting output buffer.

Source Stream Assumption

• Only supports streams split from the same source (e.g., using GstTee).
• Not suitable for merging streams from different sources.

Hierarchy

GObject
 +----GInitiallyUnowned
       +----GstObject
             +----GstElement
                   +----GstDxGather

Properties

Name	Description	Type	Default Value
name	Sets the unique name of the DxGather element.	String	"dxgather0"

---