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linux/Documentation/media/uapi/dvb/video-set-format.rst

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doc-rst: linux_tv: split DVB function call documentation Just like V4L, split the DVB function calls into one file per system call. This is a requirement for the man pages creator on Sphinx to work, and makes the document easier to maintain. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 21:37:31 +08:00
.. -*- coding: utf-8; mode: rst -*-
.. _VIDEO_SET_FORMAT:
doc-rst: linux_tv: reformat all syscall pages The syscall pages are written to be used also as man-pages. However, they don't match the format used by kernel-doc generated pages from DocBook. Rewrite them to match it. One side effect is that now all such pages at the book will have the same format, reducing the format differences between DVB and the other parts of the book. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 18:58:48 +08:00
================
doc-rst: linux_tv: split DVB function call documentation Just like V4L, split the DVB function calls into one file per system call. This is a requirement for the man pages creator on Sphinx to work, and makes the document easier to maintain. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 21:37:31 +08:00
VIDEO_SET_FORMAT
================
doc-rst: linux_tv: don't use uppercases for syscall sections On the syscall conversions, we used uppercase for the sections, but this is too bold. So, convert them to Camel Case, as it looks visually better. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-06 02:14:35 +08:00
Name
doc-rst: linux_tv: reformat all syscall pages The syscall pages are written to be used also as man-pages. However, they don't match the format used by kernel-doc generated pages from DocBook. Rewrite them to match it. One side effect is that now all such pages at the book will have the same format, reducing the format differences between DVB and the other parts of the book. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 18:58:48 +08:00
----
doc-rst: linux_tv: split DVB function call documentation Just like V4L, split the DVB function calls into one file per system call. This is a requirement for the man pages creator on Sphinx to work, and makes the document easier to maintain. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 21:37:31 +08:00
doc-rst: linux_tv: reformat all syscall pages The syscall pages are written to be used also as man-pages. However, they don't match the format used by kernel-doc generated pages from DocBook. Rewrite them to match it. One side effect is that now all such pages at the book will have the same format, reducing the format differences between DVB and the other parts of the book. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 18:58:48 +08:00
VIDEO_SET_FORMAT
doc-rst: linux_tv: split DVB function call documentation Just like V4L, split the DVB function calls into one file per system call. This is a requirement for the man pages creator on Sphinx to work, and makes the document easier to maintain. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 21:37:31 +08:00
doc-rst: linux_tv: don't use uppercases for syscall sections On the syscall conversions, we used uppercase for the sections, but this is too bold. So, convert them to Camel Case, as it looks visually better. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-06 02:14:35 +08:00
Synopsis
doc-rst: linux_tv: split DVB function call documentation Just like V4L, split the DVB function calls into one file per system call. This is a requirement for the man pages creator on Sphinx to work, and makes the document easier to maintain. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 21:37:31 +08:00
--------
doc-rst: linux_tv: use :cpp:function:: on all syscalls Now that we have one syscall per page, using :cpp:function:: cleans up almost all warnings, with is a great thing. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-06 02:22:59 +08:00
.. cpp:function:: int ioctl(fd, int request = VIDEO_SET_FORMAT, video_format_t format)
doc-rst: linux_tv: split DVB function call documentation Just like V4L, split the DVB function calls into one file per system call. This is a requirement for the man pages creator on Sphinx to work, and makes the document easier to maintain. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 21:37:31 +08:00
doc-rst: linux_tv: don't use uppercases for syscall sections On the syscall conversions, we used uppercase for the sections, but this is too bold. So, convert them to Camel Case, as it looks visually better. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-06 02:14:35 +08:00
Arguments
doc-rst: linux_tv: reformat all syscall pages The syscall pages are written to be used also as man-pages. However, they don't match the format used by kernel-doc generated pages from DocBook. Rewrite them to match it. One side effect is that now all such pages at the book will have the same format, reducing the format differences between DVB and the other parts of the book. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 18:58:48 +08:00
---------
doc-rst: linux_tv: split DVB function call documentation Just like V4L, split the DVB function calls into one file per system call. This is a requirement for the man pages creator on Sphinx to work, and makes the document easier to maintain. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 21:37:31 +08:00
.. 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_SET_FORMAT for this command.
- .. row 3
- video_format_t format
- video format of TV as defined in section ??.
doc-rst: linux_tv: don't use uppercases for syscall sections On the syscall conversions, we used uppercase for the sections, but this is too bold. So, convert them to Camel Case, as it looks visually better. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-06 02:14:35 +08:00
Description
doc-rst: linux_tv: reformat all syscall pages The syscall pages are written to be used also as man-pages. However, they don't match the format used by kernel-doc generated pages from DocBook. Rewrite them to match it. One side effect is that now all such pages at the book will have the same format, reducing the format differences between DVB and the other parts of the book. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 18:58:48 +08:00
-----------
This ioctl sets the screen format (aspect ratio) of the connected output
device (TV) so that the output of the decoder can be adjusted
accordingly.
doc-rst: linux_tv: don't use uppercases for syscall sections On the syscall conversions, we used uppercase for the sections, but this is too bold. So, convert them to Camel Case, as it looks visually better. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-06 02:14:35 +08:00
Return Value
doc-rst: linux_tv: split DVB function call documentation Just like V4L, split the DVB function calls into one file per system call. This is a requirement for the man pages creator on Sphinx to work, and makes the document easier to maintain. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-05 21:37:31 +08:00
------------
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.
.. flat-table::
:header-rows: 0
:stub-columns: 0
- .. row 1
- ``EINVAL``
- format is not a valid video format.