1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2 .. c:namespace:: DTV.dmx
4 .. _DMX_SET_BUFFER_SIZE:
18 .. c:macro:: DMX_SET_BUFFER_SIZE
20 ``int ioctl(int fd, DMX_SET_BUFFER_SIZE, unsigned long size)``
26 File descriptor returned by :c:func:`open()`.
34 This ioctl call is used to set the size of the circular buffer used for
35 filtered data. The default size is two maximum sized sections, i.e. if
36 this function is not called a buffer size of ``2 * 4096`` bytes will be
42 On success 0 is returned.
44 On error -1 is returned, and the ``errno`` variable is set
47 The generic error codes are described at the
48 :ref:`Generic Error Codes <gen-errors>` chapter.