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1.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later2.. c:namespace:: DTV.dmx3 4.. _DMX_GET_PES_PIDS:5 6================7DMX_GET_PES_PIDS8================9 10Name11----12 13DMX_GET_PES_PIDS14 15Synopsis16--------17 18.. c:macro:: DMX_GET_PES_PIDS19 20``int ioctl(fd, DMX_GET_PES_PIDS, __u16 pids[5])``21 22Arguments23---------24 25``fd``26 File descriptor returned by :c:func:`open()`.27 28``pids``29 Array used to store 5 Program IDs.30 31Description32-----------33 34This ioctl allows to query a DVB device to return the first PID used35by audio, video, textext, subtitle and PCR programs on a given service.36They're stored as:37 38======================= ======== =======================================39PID element position content40======================= ======== =======================================41pids[DMX_PES_AUDIO] 0 first audio PID42pids[DMX_PES_VIDEO] 1 first video PID43pids[DMX_PES_TELETEXT] 2 first teletext PID44pids[DMX_PES_SUBTITLE] 3 first subtitle PID45pids[DMX_PES_PCR] 4 first Program Clock Reference PID46======================= ======== =======================================47 48.. note::49 50 A value equal to 0xffff means that the PID was not filled by the51 Kernel.52 53Return Value54------------55 56On success 0 is returned.57 58On error -1 is returned, and the ``errno`` variable is set59appropriately.60 61The generic error codes are described at the62:ref:`Generic Error Codes <gen-errors>` chapter.63