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.. -*- coding: utf-8; mode: rst -*-
.. _VIDEO_STILLPICTURE:
==================
VIDEO_STILLPICTURE
==================
Name
----
VIDEO_STILLPICTURE
Synopsis
--------
.. cpp:function:: int ioctl(fd, int request = VIDEO_STILLPICTURE, struct video_still_picture *sp)
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_STILLPICTURE for this command.
- .. row 3
- struct video_still_picture \*sp
- Pointer to a location where an I-frame and size is stored.
Description
-----------
This ioctl call asks the Video Device to display a still picture
(I-frame). The input data shall contain an I-frame. If the pointer is
NULL, then the current displayed still picture is blanked.
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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