.. -*- coding: utf-8; mode: rst -*-

.. _effect:

************************
Effect Devices Interface
************************

    **Note**

    This interface has been be suspended from the V4L2 API implemented
    in Linux 2.6 until we have more experience with effect device
    interfaces.

A V4L2 video effect device can do image effects, filtering, or combine
two or more images or image streams. For example video transitions or
wipes. Applications send data to be processed and receive the result
data either with :ref:`read() <func-read>` and
:ref:`write() <func-write>` functions, or through the streaming I/O
mechanism.

[to do]


.. ------------------------------------------------------------------------------
.. This file was automatically converted from DocBook-XML with the dbxml
.. library (https://github.com/return42/sphkerneldoc). The origin XML comes
.. from the linux kernel, refer to:
..
.. * https://github.com/torvalds/linux/tree/master/Documentation/DocBook
.. ------------------------------------------------------------------------------