OpenCloudOS-Kernel/Documentation/media/uapi/dvb/video-set-display-format.rst

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.. -*- coding: utf-8; mode: rst -*-
.. _VIDEO_SET_DISPLAY_FORMAT:
========================
VIDEO_SET_DISPLAY_FORMAT
========================
Name
----
VIDEO_SET_DISPLAY_FORMAT
Synopsis
--------
.. c:function:: int ioctl(fd, int request = VIDEO_SET_DISPLAY_FORMAT, video_display_format_t format)
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_DISPLAY_FORMAT for this command.
- .. row 3
- video_display_format_t format
- Selects the video format to be used.
Description
-----------
This ioctl call asks the Video Device to select the video format to be
applied by the MPEG chip on the video.
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.