mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-17 12:56:55 +07:00
60c2820d0f
The name of the subsystem is "media", and not "linux_tv". Also, as we plan to add other stuff there in the future, let's rename also the media uAPI book to media_uapi, to make it clearer. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
47 lines
886 B
ReStructuredText
47 lines
886 B
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
|
|
|
|
.. _common:
|
|
|
|
###################
|
|
Common API Elements
|
|
###################
|
|
Programming a V4L2 device consists of these steps:
|
|
|
|
- Opening the device
|
|
|
|
- Changing device properties, selecting a video and audio input, video
|
|
standard, picture brightness a. o.
|
|
|
|
- Negotiating a data format
|
|
|
|
- Negotiating an input/output method
|
|
|
|
- The actual input/output loop
|
|
|
|
- Closing the device
|
|
|
|
In practice most steps are optional and can be executed out of order. It
|
|
depends on the V4L2 device type, you can read about the details in
|
|
:ref:`devices`. In this chapter we will discuss the basic concepts
|
|
applicable to all devices.
|
|
|
|
|
|
.. toctree::
|
|
:maxdepth: 1
|
|
|
|
open
|
|
querycap
|
|
app-pri
|
|
video
|
|
audio
|
|
tuner
|
|
standard
|
|
dv-timings
|
|
control
|
|
extended-controls
|
|
format
|
|
planar-apis
|
|
crop
|
|
selection-api
|
|
streaming-par
|