tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1.. -*- coding: utf-8; mode: rst -*-
2
3.. _VIDEO_GET_NAVI:
4
5==============
6VIDEO_GET_NAVI
7==============
8
9Name
10----
11
12VIDEO_GET_NAVI
13
14.. attention:: This ioctl is deprecated.
15
16Synopsis
17--------
18
19.. c:function:: int ioctl(fd, VIDEO_GET_NAVI , struct video_navi_pack *navipack)
20 :name: VIDEO_GET_NAVI
21
22
23Arguments
24---------
25
26.. flat-table::
27 :header-rows: 0
28 :stub-columns: 0
29
30
31 - .. row 1
32
33 - int fd
34
35 - File descriptor returned by a previous call to open().
36
37 - .. row 2
38
39 - int request
40
41 - Equals VIDEO_GET_NAVI for this command.
42
43 - .. row 3
44
45 - video_navi_pack_t \*navipack
46
47 - PCI or DSI pack (private stream 2) according to section ??.
48
49
50Description
51-----------
52
53This ioctl returns navigational information from the DVD stream. This is
54especially needed if an encoded stream has to be decoded by the
55hardware.
56
57.. c:type:: video_navi_pack
58
59.. code-block::c
60
61 typedef struct video_navi_pack {
62 int length; /* 0 ... 1024 */
63 __u8 data[1024];
64 } video_navi_pack_t;
65
66Return Value
67------------
68
69On success 0 is returned, on error -1 and the ``errno`` variable is set
70appropriately. The generic error codes are described at the
71:ref:`Generic Error Codes <gen-errors>` chapter.
72
73
74
75.. flat-table::
76 :header-rows: 0
77 :stub-columns: 0
78
79
80 - .. row 1
81
82 - ``EFAULT``
83
84 - driver is not able to return navigational information