1 .. -*- coding: utf-8; mode: rst -*-
18 .. c:function:: int ioctl( int fd, DMX_GET_STC, struct dmx_stc *stc)
25 File descriptor returned by :c:func:`open() <dvb-dmx-open>`.
28 Pointer to the location where the stc is to be stored.
34 This ioctl call returns the current value of the system time counter
35 (which is driven by a PES filter of type DMX_PES_PCR). Some hardware
36 supports more than one STC, so you must specify which one by setting the
37 num field of stc before the ioctl (range 0...n). The result is returned
38 in form of a ratio with a 64 bit numerator and a 32 bit denominator, so
39 the real 90kHz STC value is stc->stc / stc->base .
45 On success 0 is returned, on error -1 and the ``errno`` variable is set
46 appropriately. The generic error codes are described at the
47 :ref:`Generic Error Codes <gen-errors>` chapter.