diff options
Diffstat (limited to 'Documentation/userspace-api/media/dvb/video-get-pts.rst')
| -rw-r--r-- | Documentation/userspace-api/media/dvb/video-get-pts.rst | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/dvb/video-get-pts.rst b/Documentation/userspace-api/media/dvb/video-get-pts.rst new file mode 100644 index 000000000000..f957df792ae1 --- /dev/null +++ b/Documentation/userspace-api/media/dvb/video-get-pts.rst @@ -0,0 +1,78 @@ +.. Permission is granted to copy, distribute and/or modify this +.. document under the terms of the GNU Free Documentation License, +.. Version 1.1 or any later version published by the Free Software +.. Foundation, with no Invariant Sections, no Front-Cover Texts +.. and no Back-Cover Texts. A copy of the license is included at +.. Documentation/userspace-api/media/fdl-appendix.rst. +.. +.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections + +.. _VIDEO_GET_PTS: + +============= +VIDEO_GET_PTS +============= + +Name +---- + +VIDEO_GET_PTS + +.. attention:: This ioctl is deprecated. + +Synopsis +-------- + +.. c:function:: int ioctl(int fd, VIDEO_GET_PTS, __u64 *pts) + :name: VIDEO_GET_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_PTS for this command. + + - .. row 3 + + - __u64 \*pts + + - Returns the 33-bit timestamp as defined in ITU T-REC-H.222.0 / + ISO/IEC 13818-1. + + The PTS should belong to the currently played frame if possible, + but may also be a value close to it like the PTS of the last + decoded frame or the last PTS extracted by the PES parser. + + +Description +----------- + +This ioctl is obsolete.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 For V4L2 decoders +this ioctl has been replaced by the ``V4L2_CID_MPEG_VIDEO_DEC_PTS`` +control. + +This ioctl call asks the Video Device to return the current PTS +timestamp. + + +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. |