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Diffstat (limited to 'Documentation/DocBook/v4l/compat.xml')
| -rw-r--r-- | Documentation/DocBook/v4l/compat.xml | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/DocBook/v4l/compat.xml b/Documentation/DocBook/v4l/compat.xml index b42b935913cd..54447f0d0784 100644 --- a/Documentation/DocBook/v4l/compat.xml +++ b/Documentation/DocBook/v4l/compat.xml @@ -1091,8 +1091,9 @@ signed 64-bit integer. Output devices should not send a buffer out until the time in the timestamp field has arrived. I would like to follow SGI's lead, and adopt a multimedia timestamping system like their UST (Unadjusted System Time). See -http://reality.sgi.com/cpirazzi_engr/lg/time/intro.html. [This link is -no longer valid.] UST uses timestamps that are 64-bit signed integers +http://web.archive.org/web/*/http://reality.sgi.com +/cpirazzi_engr/lg/time/intro.html. +UST uses timestamps that are 64-bit signed integers (not struct timeval's) and given in nanosecond units. The UST clock starts at zero when the system is booted and runs continuously and uniformly. It takes a little over 292 years for UST to overflow. There |
