94 lines
1.9 KiB
ReStructuredText
94 lines
1.9 KiB
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
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.. _VIDEO_SET_ATTRIBUTES:
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====================
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VIDEO_SET_ATTRIBUTES
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====================
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Name
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----
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VIDEO_SET_ATTRIBUTES
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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_SET_ATTRIBUTE ,video_attributes_t vattr)
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:name: VIDEO_SET_ATTRIBUTE
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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_SET_ATTRIBUTE for this command.
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- .. row 3
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- video_attributes_t vattr
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- video attributes according to section ??.
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Description
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-----------
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This ioctl is intended for DVD playback and allows you to set certain
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information about the stream. Some hardware may not need this
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information, but the call also tells the hardware to prepare for DVD
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playback.
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.. c:type:: video_attributes_t
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.. code-block::c
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typedef __u16 video_attributes_t;
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/* bits: descr. */
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/* 15-14 Video compression mode (0=MPEG-1, 1=MPEG-2) */
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/* 13-12 TV system (0=525/60, 1=625/50) */
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/* 11-10 Aspect ratio (0=4:3, 3=16:9) */
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/* 9- 8 permitted display mode on 4:3 monitor (0=both, 1=only pan-sca */
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/* 7 line 21-1 data present in GOP (1=yes, 0=no) */
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/* 6 line 21-2 data present in GOP (1=yes, 0=no) */
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/* 5- 3 source resolution (0=720x480/576, 1=704x480/576, 2=352x480/57 */
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/* 2 source letterboxed (1=yes, 0=no) */
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/* 0 film/camera mode (0=camera, 1=film (625/50 only)) */
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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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.. 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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- ``EINVAL``
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- input is not a valid attribute setting.
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