1.. Permission is granted to copy, distribute and/or modify this
2.. document under the terms of the GNU Free Documentation License,
3.. Version 1.1 or any later version published by the Free Software
4.. Foundation, with no Invariant Sections, no Front-Cover Texts
5.. and no Back-Cover Texts. A copy of the license is included at
6.. Documentation/userspace-api/media/fdl-appendix.rst.
7..
8.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
9
10.. _DMX_SET_BUFFER_SIZE:
11
12===================
13DMX_SET_BUFFER_SIZE
14===================
15
16Name
17----
18
19DMX_SET_BUFFER_SIZE
20
21
22Synopsis
23--------
24
25.. c:function:: int ioctl( int fd, DMX_SET_BUFFER_SIZE, unsigned long size)
26    :name: DMX_SET_BUFFER_SIZE
27
28
29Arguments
30---------
31
32``fd``
33    File descriptor returned by :c:func:`open() <dvb-dmx-open>`.
34
35``size``
36    Unsigned long size
37
38Description
39-----------
40
41This ioctl call is used to set the size of the circular buffer used for
42filtered data. The default size is two maximum sized sections, i.e. if
43this function is not called a buffer size of ``2 * 4096`` bytes will be
44used.
45
46
47Return Value
48------------
49
50
51On success 0 is returned.
52
53On error -1 is returned, and the ``errno`` variable is set
54appropriately.
55
56The generic error codes are described at the
57:ref:`Generic Error Codes <gen-errors>` chapter.
58