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| author |   Christophe Fergeau <cfergeau@mandriva.com> | 2010-08-17 20:27:55 +0200 |
|---|---|---|
| committer | Christophe Fergeau <cfergeau@mandriva.com> | 2010-08-17 20:27:55 +0200 |
| commit | d188fa7386f37b21de96d557aafa7fefdfda9b73 (patch) | |
| tree | 337dc81a18ff58aa9c737046d77e11f5dfaaa8de /airtunes2.rst | |
| parent | describe "first" behaviour for RTP packets (diff) | |
| download | Airtunes2-d188fa7386f37b21de96d557aafa7fefdfda9b73.tar.xz Airtunes2-d188fa7386f37b21de96d557aafa7fefdfda9b73.zip | |
improve description of NTP timestamps
Diffstat (limited to '')
| -rw-r--r-- | airtunes2.rst | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/airtunes2.rst b/airtunes2.rst index 195d178..f82f558 100644 --- a/airtunes2.rst +++ b/airtunes2.rst @@ -164,8 +164,11 @@ RtpHeader NTP Timestamp ~~~~~~~~~~~~~ -This is an NTP Timestamp as described in RFC 3450 Section 4. and RFC 1305 -(TODO: check this is actually true) +This is an NTP Timestamp as described in RFC 3450 Section 4. and RFC 1305. +The timestamps used by iTunes and the device seems to come from a monotonic +clock which starts at 0 when they just started/booted. This monotonic clock's +origin of time is the unix epoch, which corresponds to 0x83aa7e80 seconds +in NTP time. :: |