libcamera
v0.5.1
Supporting cameras in Linux since 2019
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media_pipeline.h
Go to the documentation of this file.
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2024, Ideas on Board Oy
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*
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* Media pipeline support
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*/
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#pragma once
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#include <list>
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#include <string>
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#include <
libcamera/base/log.h
>
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namespace
libcamera
{
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class
CameraSensor
;
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class
MediaEntity
;
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class
MediaLink
;
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class
MediaPad
;
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struct
V4L2SubdeviceFormat
;
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class
MediaPipeline
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{
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public
:
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int
init
(
MediaEntity
*source, std::string_view sink);
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int
initLinks
();
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int
configure
(
CameraSensor
*sensor,
V4L2SubdeviceFormat
*);
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private
:
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struct
Entity {
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/* The media entity, always valid. */
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MediaEntity
*entity;
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/*
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* Whether or not the entity is a subdev that supports the
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* routing API.
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*/
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bool
supportsRouting;
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/*
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* The local sink pad connected to the upstream entity, null for
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* the camera sensor at the beginning of the pipeline.
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*/
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const
MediaPad
*sink;
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/*
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* The local source pad connected to the downstream entity, null
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* for the video node at the end of the pipeline.
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*/
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const
MediaPad
*source;
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/*
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* The link on the source pad, to the downstream entity, null
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* for the video node at the end of the pipeline.
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*/
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MediaLink
*sourceLink;
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};
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std::list<Entity> entities_;
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};
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}
/* namespace libcamera */
libcamera::CameraSensor
A abstract camera sensor.
Definition
camera_sensor.h:39
libcamera::MediaEntity
The MediaEntity represents an entity in the media graph.
Definition
media_object.h:97
libcamera::MediaLink
The MediaLink represents a link between two pads in the media graph.
Definition
media_object.h:44
libcamera::MediaPad
The MediaPad represents a pad of an entity in the media graph.
Definition
media_object.h:69
libcamera::MediaPipeline
The MediaPipeline represents a set of entities that together form a data path for stream data.
Definition
media_pipeline.h:24
libcamera::MediaPipeline::configure
int configure(CameraSensor *sensor, V4L2SubdeviceFormat *)
Configure the entities of this MediaPipeline.
Definition
media_pipeline.cpp:249
libcamera::MediaPipeline::init
int init(MediaEntity *source, std::string_view sink)
Find the path from source to sink.
Definition
media_pipeline.cpp:105
libcamera::MediaPipeline::initLinks
int initLinks()
Initialise and enable all links through the MediaPipeline.
Definition
media_pipeline.cpp:215
log.h
Logging infrastructure.
libcamera
Top-level libcamera namespace.
Definition
backtrace.h:17
libcamera::V4L2SubdeviceFormat
The V4L2 sub-device image format and sizes.
Definition
v4l2_subdevice.h:64
include
libcamera
internal
media_pipeline.h
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