1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2.. c:namespace:: DTV.video
3
4.. _VIDEO_FAST_FORWARD:
5
6==================
7VIDEO_FAST_FORWARD
8==================
9
10Name
11----
12
13VIDEO_FAST_FORWARD
14
15.. attention:: This ioctl is deprecated.
16
17Synopsis
18--------
19
20.. c:macro:: VIDEO_FAST_FORWARD
21
22``int ioctl(fd, VIDEO_FAST_FORWARD, int nFrames)``
23
24Arguments
25---------
26
27.. flat-table::
28    :header-rows:  0
29    :stub-columns: 0
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_FAST_FORWARD for this command.
42
43    -  .. row 3
44
45       -  int nFrames
46
47       -  The number of frames to skip.
48
49Description
50-----------
51
52This ioctl call asks the Video Device to skip decoding of N number of
53I-frames. This call can only be used if VIDEO_SOURCE_MEMORY is
54selected.
55
56Return Value
57------------
58
59On success 0 is returned, on error -1 and the ``errno`` variable is set
60appropriately. The generic error codes are described at the
61:ref:`Generic Error Codes <gen-errors>` chapter.
62
63
64.. flat-table::
65    :header-rows:  0
66    :stub-columns: 0
67
68    -  .. row 1
69
70       -  ``EPERM``
71
72       -  Mode VIDEO_SOURCE_MEMORY not selected.
73