1 .. -*- coding: utf-8; mode: rst -*-
3 .. _DMX_SET_BUFFER_SIZE:
18 .. cpp:function:: int ioctl( int fd, int request = DMX_SET_BUFFER_SIZE, unsigned long size)
33 - File descriptor returned by a previous call to open().
39 - Equals DMX_SET_BUFFER_SIZE for this command.
45 - Size of circular buffer.
51 This ioctl call is used to set the size of the circular buffer used for
52 filtered data. The default size is two maximum sized sections, i.e. if
53 this function is not called a buffer size of 2 \* 4096 bytes will be
60 On success 0 is returned, on error -1 and the ``errno`` variable is set
61 appropriately. The generic error codes are described at the
62 :ref:`Generic Error Codes <gen-errors>` chapter.