1*4882a593Smuzhiyun.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2*4882a593Smuzhiyun.. c:namespace:: DTV.dmx 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun.. _DMX_START: 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun========= 7*4882a593SmuzhiyunDMX_START 8*4882a593Smuzhiyun========= 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunName 11*4882a593Smuzhiyun---- 12*4882a593Smuzhiyun 13*4882a593SmuzhiyunDMX_START 14*4882a593Smuzhiyun 15*4882a593SmuzhiyunSynopsis 16*4882a593Smuzhiyun-------- 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun.. c:macro:: DMX_START 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun``int ioctl(int fd, DMX_START)`` 21*4882a593Smuzhiyun 22*4882a593SmuzhiyunArguments 23*4882a593Smuzhiyun--------- 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun``fd`` 26*4882a593Smuzhiyun File descriptor returned by :c:func:`open()`. 27*4882a593Smuzhiyun 28*4882a593SmuzhiyunDescription 29*4882a593Smuzhiyun----------- 30*4882a593Smuzhiyun 31*4882a593SmuzhiyunThis ioctl call is used to start the actual filtering operation defined 32*4882a593Smuzhiyunvia the ioctl calls :ref:`DMX_SET_FILTER` or :ref:`DMX_SET_PES_FILTER`. 33*4882a593Smuzhiyun 34*4882a593SmuzhiyunReturn Value 35*4882a593Smuzhiyun------------ 36*4882a593Smuzhiyun 37*4882a593SmuzhiyunOn success 0 is returned. 38*4882a593Smuzhiyun 39*4882a593SmuzhiyunOn error -1 is returned, and the ``errno`` variable is set 40*4882a593Smuzhiyunappropriately. 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun.. tabularcolumns:: |p{2.5cm}|p{15.0cm}| 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun.. flat-table:: 45*4882a593Smuzhiyun :header-rows: 0 46*4882a593Smuzhiyun :stub-columns: 0 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun - .. row 1 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun - ``EINVAL`` 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun - Invalid argument, i.e. no filtering parameters provided via the 53*4882a593Smuzhiyun :ref:`DMX_SET_FILTER` or :ref:`DMX_SET_PES_FILTER` ioctls. 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun - .. row 2 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun - ``EBUSY`` 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun - This error code indicates that there are conflicting requests. 60*4882a593Smuzhiyun There are active filters filtering data from another input source. 61*4882a593Smuzhiyun Make sure that these filters are stopped before starting this 62*4882a593Smuzhiyun filter. 63*4882a593Smuzhiyun 64*4882a593SmuzhiyunThe generic error codes are described at the 65*4882a593Smuzhiyun:ref:`Generic Error Codes <gen-errors>` chapter. 66