mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 06:35:04 +07:00
54f38fcae5
Since 2017, there is an space reserved for userspace API,
created by changeset 1d596dee38 ("docs: Create a user-space API guide").
As the media subsystem was one of the first subsystems to use
Sphinx, until this patch, we were keeping things on a separate
place.
Let's just use the new location, as having all uAPI altogether
will likely make things easier for developers.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
79 lines
1.5 KiB
ReStructuredText
79 lines
1.5 KiB
ReStructuredText
.. Permission is granted to copy, distribute and/or modify this
|
|
.. document under the terms of the GNU Free Documentation License,
|
|
.. Version 1.1 or any later version published by the Free Software
|
|
.. Foundation, with no Invariant Sections, no Front-Cover Texts
|
|
.. and no Back-Cover Texts. A copy of the license is included at
|
|
.. Documentation/userspace-api/media/fdl-appendix.rst.
|
|
..
|
|
.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
|
|
|
|
.. _VIDEO_GET_SIZE:
|
|
|
|
==============
|
|
VIDEO_GET_SIZE
|
|
==============
|
|
|
|
Name
|
|
----
|
|
|
|
VIDEO_GET_SIZE
|
|
|
|
.. attention:: This ioctl is deprecated.
|
|
|
|
Synopsis
|
|
--------
|
|
|
|
.. c:function:: int ioctl(int fd, VIDEO_GET_SIZE, video_size_t *size)
|
|
:name: VIDEO_GET_SIZE
|
|
|
|
|
|
Arguments
|
|
---------
|
|
|
|
.. flat-table::
|
|
:header-rows: 0
|
|
:stub-columns: 0
|
|
|
|
|
|
- .. row 1
|
|
|
|
- int fd
|
|
|
|
- File descriptor returned by a previous call to open().
|
|
|
|
- .. row 2
|
|
|
|
- int request
|
|
|
|
- Equals VIDEO_GET_SIZE for this command.
|
|
|
|
- .. row 3
|
|
|
|
- video_size_t \*size
|
|
|
|
- Returns the size and aspect ratio.
|
|
|
|
|
|
Description
|
|
-----------
|
|
|
|
This ioctl returns the size and aspect ratio.
|
|
|
|
.. c:type:: video_size_t
|
|
|
|
.. code-block::c
|
|
|
|
typedef struct {
|
|
int w;
|
|
int h;
|
|
video_format_t aspect_ratio;
|
|
} video_size_t;
|
|
|
|
|
|
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.
|