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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
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treea94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/userspace-api/media/dvb/video-get-frame-count.rst
parentInitial commit. (diff)
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Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+.. c:namespace:: DTV.video
+
+.. _VIDEO_GET_FRAME_COUNT:
+
+=====================
+VIDEO_GET_FRAME_COUNT
+=====================
+
+Name
+----
+
+VIDEO_GET_FRAME_COUNT
+
+.. attention:: This ioctl is deprecated.
+
+Synopsis
+--------
+
+.. c:macro:: VIDEO_GET_FRAME_COUNT
+
+``int ioctl(int fd, VIDEO_GET_FRAME_COUNT, __u64 *pts)``
+
+Arguments
+---------
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+
+ - .. row 1
+
+ - int fd
+
+ - File descriptor returned by a previous call to open().
+
+ - .. row 2
+
+ - int request
+
+ - Equals VIDEO_GET_FRAME_COUNT for this command.
+
+ - .. row 3
+
+ - __u64 \*pts
+
+ - Returns the number of frames displayed since the decoder was
+ started.
+
+Description
+-----------
+
+This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders
+this ioctl has been replaced by the ``V4L2_CID_MPEG_VIDEO_DEC_FRAME``
+control.
+
+This ioctl call asks the Video Device to return the number of displayed
+frames since the decoder was started.
+
+Return Value
+------------
+
+On success 0 is returned, on error -1 and the ``errno`` variable is set
+appropriately. The generic error codes are described at the
+:ref:`Generic Error Codes <gen-errors>` chapter.