Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 64 insertions, 0 deletions

diff --git a/Documentation/media/uapi/dvb/dmx-get-pes-pids.rst b/Documentation/media/uapi/dvb/dmx-get-pes-pids.rst
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index 000000000..fbdbc1286
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+.. -*- coding: utf-8; mode: rst -*-
+
+.. _DMX_GET_PES_PIDS:
+
+================
+DMX_GET_PES_PIDS
+================
+
+Name
+----
+
+DMX_GET_PES_PIDS
+
+
+Synopsis
+--------
+
+.. c:function:: int ioctl(fd, DMX_GET_PES_PIDS, __u16 pids[5])
+    :name: DMX_GET_PES_PIDS
+
+Arguments
+---------
+
+``fd``
+    File descriptor returned by :c:func:`open() <dvb-dmx-open>`.
+
+``pids``
+    Array used to store 5 Program IDs.
+
+
+Description
+-----------
+
+This ioctl allows to query a DVB device to return the first PID used
+by audio, video, textext, subtitle and PCR programs on a given service.
+They're stored as:
+
+=======================	========	=======================================
+PID  element		position	content
+=======================	========	=======================================
+pids[DMX_PES_AUDIO]	0		first audio PID
+pids[DMX_PES_VIDEO]	1		first video PID
+pids[DMX_PES_TELETEXT]	2		first teletext PID
+pids[DMX_PES_SUBTITLE]	3		first subtitle PID
+pids[DMX_PES_PCR]	4		first Program Clock Reference PID
+=======================	========	=======================================
+
+
+.. note::
+
+	A value equal to 0xffff means that the PID was not filled by the
+	Kernel.
+
+
+Return Value
+------------
+
+On success 0 is returned.
+
+On error -1 is returned, and the ``errno`` variable is set
+appropriately.
+
+The generic error codes are described at the
+:ref:`Generic Error Codes <gen-errors>` chapter.