1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2
3.. _DMX_SET_BUFFER_SIZE:
4
5===================
6DMX_SET_BUFFER_SIZE
7===================
8
9Name
10----
11
12DMX_SET_BUFFER_SIZE
13
14
15Synopsis
16--------
17
18.. c:function:: int ioctl( int fd, DMX_SET_BUFFER_SIZE, unsigned long size)
19    :name: DMX_SET_BUFFER_SIZE
20
21
22Arguments
23---------
24
25``fd``
26    File descriptor returned by :c:func:`open() <dvb-dmx-open>`.
27
28``size``
29    Unsigned long size
30
31Description
32-----------
33
34This ioctl call is used to set the size of the circular buffer used for
35filtered data. The default size is two maximum sized sections, i.e. if
36this function is not called a buffer size of ``2 * 4096`` bytes will be
37used.
38
39
40Return Value
41------------
42
43
44On success 0 is returned.
45
46On error -1 is returned, and the ``errno`` variable is set
47appropriately.
48
49The generic error codes are described at the
50:ref:`Generic Error Codes <gen-errors>` chapter.
51