85 lines
1.4 KiB
ReStructuredText
85 lines
1.4 KiB
ReStructuredText
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.. -*- coding: utf-8; mode: rst -*-
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.. _VIDEO_GET_NAVI:
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==============
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VIDEO_GET_NAVI
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==============
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Name
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----
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VIDEO_GET_NAVI
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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_GET_NAVI , struct video_navi_pack *navipack)
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:name: VIDEO_GET_NAVI
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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_NAVI for this command.
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- .. row 3
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- video_navi_pack_t \*navipack
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- PCI or DSI pack (private stream 2) according to section ??.
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Description
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-----------
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This ioctl returns navigational information from the DVD stream. This is
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especially needed if an encoded stream has to be decoded by the
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hardware.
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.. c:type:: video_navi_pack
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.. code-block::c
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typedef struct video_navi_pack {
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int length; /* 0 ... 1024 */
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__u8 data[1024];
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} video_navi_pack_t;
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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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- ``EFAULT``
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- driver is not able to return navigational information
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