.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
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.. c:namespace:: DTV.dmx
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.. _DMX_GET_PES_PIDS:
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================
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DMX_GET_PES_PIDS
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================
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Name
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----
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DMX_GET_PES_PIDS
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Synopsis
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--------
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.. c:macro:: DMX_GET_PES_PIDS
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``int ioctl(fd, DMX_GET_PES_PIDS, __u16 pids[5])``
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Arguments
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---------
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``fd``
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File descriptor returned by :c:func:`open()`.
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``pids``
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Array used to store 5 Program IDs.
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Description
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-----------
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This ioctl allows to query a DVB device to return the first PID used
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by audio, video, textext, subtitle and PCR programs on a given service.
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They're stored as:
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======================= ======== =======================================
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PID element position content
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======================= ======== =======================================
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pids[DMX_PES_AUDIO] 0 first audio PID
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pids[DMX_PES_VIDEO] 1 first video PID
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pids[DMX_PES_TELETEXT] 2 first teletext PID
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pids[DMX_PES_SUBTITLE] 3 first subtitle PID
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pids[DMX_PES_PCR] 4 first Program Clock Reference PID
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======================= ======== =======================================
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.. note::
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A value equal to 0xffff means that the PID was not filled by the
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Kernel.
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Return Value
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------------
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On success 0 is returned.
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On error -1 is returned, and the ``errno`` variable is set
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appropriately.
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The generic error codes are described at the
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:ref:`Generic Error Codes <gen-errors>` chapter.
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