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.. -*- coding: utf-8; mode: rst -*-
.. _VIDEO_SET_ID:
============
VIDEO_SET_ID
============
Name
----
VIDEO_SET_ID
Synopsis
--------
.. c:function:: int ioctl(int fd, int request = VIDEO_SET_ID, int id)
Arguments
---------
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- .. row 1
- int fd
- File descriptor returned by a previous call to open().
- .. row 2
- int request
- Equals VIDEO_SET_ID for this command.
- .. row 3
- int id
- video sub-stream id
Description
-----------
This ioctl selects which sub-stream is to be decoded if a program or
system stream is sent to the video device.
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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- .. row 1
- ``EINVAL``
- Invalid sub-stream id.
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