tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2.. c:namespace:: DTV.dmx
3
4.. _DMX_GET_PES_PIDS:
5
6================
7DMX_GET_PES_PIDS
8================
9
10Name
11----
12
13DMX_GET_PES_PIDS
14
15Synopsis
16--------
17
18.. c:macro:: DMX_GET_PES_PIDS
19
20``int ioctl(fd, DMX_GET_PES_PIDS, __u16 pids[5])``
21
22Arguments
23---------
24
25``fd``
26 File descriptor returned by :c:func:`open()`.
27
28``pids``
29 Array used to store 5 Program IDs.
30
31Description
32-----------
33
34This ioctl allows to query a DVB device to return the first PID used
35by audio, video, textext, subtitle and PCR programs on a given service.
36They're stored as:
37
38======================= ======== =======================================
39PID element position content
40======================= ======== =======================================
41pids[DMX_PES_AUDIO] 0 first audio PID
42pids[DMX_PES_VIDEO] 1 first video PID
43pids[DMX_PES_TELETEXT] 2 first teletext PID
44pids[DMX_PES_SUBTITLE] 3 first subtitle PID
45pids[DMX_PES_PCR] 4 first Program Clock Reference PID
46======================= ======== =======================================
47
48.. note::
49
50 A value equal to 0xffff means that the PID was not filled by the
51 Kernel.
52
53Return Value
54------------
55
56On success 0 is returned.
57
58On error -1 is returned, and the ``errno`` variable is set
59appropriately.
60
61The generic error codes are described at the
62:ref:`Generic Error Codes <gen-errors>` chapter.