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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
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Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+.. c:namespace:: DTV.dmx
+
+.. _DMX_START:
+
+=========
+DMX_START
+=========
+
+Name
+----
+
+DMX_START
+
+Synopsis
+--------
+
+.. c:macro:: DMX_START
+
+``int ioctl(int fd, DMX_START)``
+
+Arguments
+---------
+
+``fd``
+ File descriptor returned by :c:func:`open()`.
+
+Description
+-----------
+
+This ioctl call is used to start the actual filtering operation defined
+via the ioctl calls :ref:`DMX_SET_FILTER` or :ref:`DMX_SET_PES_FILTER`.
+
+Return Value
+------------
+
+On success 0 is returned.
+
+On error -1 is returned, and the ``errno`` variable is set
+appropriately.
+
+.. tabularcolumns:: |p{2.5cm}|p{15.0cm}|
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+
+ - .. row 1
+
+ - ``EINVAL``
+
+ - Invalid argument, i.e. no filtering parameters provided via the
+ :ref:`DMX_SET_FILTER` or :ref:`DMX_SET_PES_FILTER` ioctls.
+
+ - .. row 2
+
+ - ``EBUSY``
+
+ - This error code indicates that there are conflicting requests.
+ There are active filters filtering data from another input source.
+ Make sure that these filters are stopped before starting this
+ filter.
+
+The generic error codes are described at the
+:ref:`Generic Error Codes <gen-errors>` chapter.