1 .. -*- coding: utf-8; mode: rst -*-
18 .. cpp:function:: int ioctl( int fd, int request = DMX_SET_FILTER, struct dmx_sct_filter_params *params)
33 - File descriptor returned by a previous call to open().
39 - Equals DMX_SET_FILTER for this command.
43 - struct dmx_sct_filter_params \*params
45 - Pointer to structure containing filter parameters.
51 This ioctl call sets up a filter according to the filter and mask
52 parameters provided. A timeout may be defined stating number of seconds
53 to wait for a section to be loaded. A value of 0 means that no timeout
54 should be applied. Finally there is a flag field where it is possible to
55 state whether a section should be CRC-checked, whether the filter should
56 be a ”one-shot” filter, i.e. if the filtering operation should be
57 stopped after the first section is received, and whether the filtering
58 operation should be started immediately (without waiting for a
59 DMX_START ioctl call). If a filter was previously set-up, this filter
60 will be canceled, and the receive buffer will be flushed.
66 On success 0 is returned, on error -1 and the ``errno`` variable is set
67 appropriately. The generic error codes are described at the
68 :ref:`Generic Error Codes <gen-errors>` chapter.