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.. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
.. c:namespace:: RC
.. _lirc_get_min_timeout:
.. _lirc_get_max_timeout:
****************************************************
ioctls LIRC_GET_MIN_TIMEOUT and LIRC_GET_MAX_TIMEOUT
****************************************************
Name
====
LIRC_GET_MIN_TIMEOUT / LIRC_GET_MAX_TIMEOUT - Obtain the possible timeout
range for IR receive.
Synopsis
========
.. c:macro:: LIRC_GET_MIN_TIMEOUT
``int ioctl(int fd, LIRC_GET_MIN_TIMEOUT, __u32 *timeout)``
.. c:macro:: LIRC_GET_MAX_TIMEOUT
``int ioctl(int fd, LIRC_GET_MAX_TIMEOUT, __u32 *timeout)``
Arguments
=========
``fd``
File descriptor returned by open().
``timeout``
Timeout, in microseconds.
Description
===========
Some devices have internal timers that can be used to detect when
there's no IR activity for a long time. This can help lircd in
detecting that a IR signal is finished and can speed up the decoding
process. Returns an integer value with the minimum/maximum timeout
that can be set.
.. note::
Some devices have a fixed timeout, in that case
both ioctls will return the same value even though the timeout
cannot be changed via :ref:`LIRC_SET_REC_TIMEOUT`.
Return Value
============
On success 0 is returned, on error -1 and the ``errno`` variable is set
appropriately. The generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.
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