video-get-pts.rst 1.3 KB
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.. -*- coding: utf-8; mode: rst -*-

.. _VIDEO_GET_PTS:

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=============
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VIDEO_GET_PTS
=============

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NAME
----
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VIDEO_GET_PTS
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SYNOPSIS
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--------

.. c:function:: int ioctl(int fd, int request = VIDEO_GET_PTS, __u64 *pts)


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ARGUMENTS
---------
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    -  .. row 1

       -  int fd

       -  File descriptor returned by a previous call to open().

    -  .. row 2

       -  int request

       -  Equals VIDEO_GET_PTS for this command.

    -  .. row 3

       -  __u64 \*pts

       -  Returns the 33-bit timestamp as defined in ITU T-REC-H.222.0 /
	  ISO/IEC 13818-1.

	  The PTS should belong to the currently played frame if possible,
	  but may also be a value close to it like the PTS of the last
	  decoded frame or the last PTS extracted by the PES parser.


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DESCRIPTION
-----------

This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders
this ioctl has been replaced by the ``V4L2_CID_MPEG_VIDEO_DEC_PTS``
control.

This ioctl call asks the Video Device to return the current PTS
timestamp.


RETURN VALUE
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------------

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.