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