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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/userspace-api/media/dvb/dmx-set-buffer-size.rst | |
parent | Initial commit. (diff) | |
download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | Documentation/userspace-api/media/dvb/dmx-set-buffer-size.rst | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/dvb/dmx-set-buffer-size.rst b/Documentation/userspace-api/media/dvb/dmx-set-buffer-size.rst new file mode 100644 index 000000000..13ce4092c --- /dev/null +++ b/Documentation/userspace-api/media/dvb/dmx-set-buffer-size.rst @@ -0,0 +1,48 @@ +.. 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. |