linux/Documentation/media/uapi/dvb/video-set-spu.rst
Mauro Carvalho Chehab cf8076c314 [media] docs-rst: Convert DVB uAPI to use C function references
Name all ioctl references and make them match the ioctls that
are documented. That will improve the cross-reference index,
as it will have all ioctls and syscalls there.

While here, improve the documentation, marking the deprecated
ioctls, and making the non-deprecated ones more like the rest
of the media book.

Also, add a notice for ioctls that still require documentation.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-08-22 21:23:34 -03:00

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ReStructuredText

.. -*- coding: utf-8; mode: rst -*-
.. _VIDEO_SET_SPU:
=============
VIDEO_SET_SPU
=============
Name
----
VIDEO_SET_SPU
.. attention:: This ioctl is deprecated.
Synopsis
--------
.. c:function:: int ioctl(fd, VIDEO_SET_SPU , video_spu_t *spu)
:name: VIDEO_SET_SPU
Arguments
---------
.. flat-table::
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- .. row 1
- int fd
- File descriptor returned by a previous call to open().
- .. row 2
- int request
- Equals VIDEO_SET_SPU for this command.
- .. row 3
- video_spu_t \*spu
- SPU decoding (de)activation and subid setting according to section
??.
Description
-----------
This ioctl activates or deactivates SPU decoding in a DVD input stream.
It can only be used, if the driver is able to handle a DVD stream.
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``
- input is not a valid spu setting or driver cannot handle SPU.