.. -*- coding: utf-8; mode: rst -*- .. _DMX_START: ========= DMX_START ========= Name ---- DMX_START Synopsis -------- .. c:function:: int ioctl( int fd, DMX_START) :name: 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 ` chapter.