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60c2820d0f
The name of the subsystem is "media", and not "linux_tv". Also, as we plan to add other stuff there in the future, let's rename also the media uAPI book to media_uapi, to make it clearer. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
60 lines
980 B
ReStructuredText
60 lines
980 B
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
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.. _VIDEO_GET_FRAME_RATE:
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====================
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VIDEO_GET_FRAME_RATE
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====================
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Name
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----
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VIDEO_GET_FRAME_RATE
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Synopsis
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--------
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.. cpp:function:: int ioctl(int fd, int request = VIDEO_GET_FRAME_RATE, unsigned int *rate)
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Arguments
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---------
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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- .. row 1
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- int fd
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- File descriptor returned by a previous call to open().
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- .. row 2
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- int request
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- Equals VIDEO_GET_FRAME_RATE for this command.
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- .. row 3
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- unsigned int \*rate
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- Returns the framerate in number of frames per 1000 seconds.
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Description
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-----------
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This ioctl call asks the Video Device to return the current framerate.
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Return Value
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------------
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On success 0 is returned, on error -1 and the ``errno`` variable is set
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appropriately. The generic error codes are described at the
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:ref:`Generic Error Codes <gen-errors>` chapter.
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