libcamera::MediaPipeline Class Reference

The MediaPipeline represents a set of entities that together form a data path for stream data. More...

Public Member Functions
int	init (MediaEntity *source, std::string_view sink)
	Find the path from source to sink. More...
int	initLinks ()
	Initialise and enable all links through the MediaPipeline. More...
int	configure (CameraSensor *sensor, V4L2SubdeviceFormat *)
	Configure the entities of this MediaPipeline. More...

Detailed Description

The MediaPipeline represents a set of entities that together form a data path for stream data.

A MediaPipeline instance is constructed from a sink and a source between two entities in a media graph.

Member Function Documentation

configure()

int libcamera::MediaPipeline::configure	(	CameraSensor *	sensor,
		V4L2SubdeviceFormat *	format
	)

Configure the entities of this MediaPipeline.

Propagate formats through each of the entities of the Pipeline, validating that each one was not adjusted by the driver from the desired format.

Returns

0 on success or a negative errno otherwise

init()

int libcamera::MediaPipeline::init	(	MediaEntity *	source,
		std::string_view	sink
	)

Find the path from source to sink.

Starting from a source entity, determine the shortest path to the target described by sink.

If sink can not be found, or a route from source to sink can not be achieved an error of -ENOLINK will be returned.

When successful, the MediaPipeline will internally store the representation of entities and links to describe the path between the two entities.

Returns

0 on success, a negative errno otherwise

initLinks()

int libcamera::MediaPipeline::initLinks

(

)

Initialise and enable all links through the MediaPipeline.

Returns

0 on success, or a negative errno otherwise

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The documentation for this class was generated from the following files:

• include/libcamera/internal/media_pipeline.h
• src/libcamera/media_pipeline.cpp