forked from Minki/linux
cf8076c314
Name all ioctl references and make them match the ioctls that are documented. That will improve the cross-reference index, as it will have all ioctls and syscalls there. While here, improve the documentation, marking the deprecated ioctls, and making the non-deprecated ones more like the rest of the media book. Also, add a notice for ioctls that still require documentation. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
64 lines
1.2 KiB
ReStructuredText
64 lines
1.2 KiB
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
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.. _VIDEO_FREEZE:
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============
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VIDEO_FREEZE
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============
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Name
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----
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VIDEO_FREEZE
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.. attention:: This ioctl is deprecated.
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Synopsis
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--------
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.. c:function:: int ioctl(fd, VIDEO_FREEZE)
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:name: VIDEO_FREEZE
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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_FREEZE for this command.
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Description
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-----------
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This ioctl is for DVB devices only. To control a V4L2 decoder use the
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V4L2 :ref:`VIDIOC_DECODER_CMD` instead.
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This ioctl call suspends the live video stream being played. Decoding
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and playing are frozen. It is then possible to restart the decoding and
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playing process of the video stream using the VIDEO_CONTINUE command.
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If VIDEO_SOURCE_MEMORY is selected in the ioctl call
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VIDEO_SELECT_SOURCE, the DVB subsystem will not decode any more data
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until the ioctl call VIDEO_CONTINUE or VIDEO_PLAY is performed.
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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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