#771: RAOP streams are delayed
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Reporter: takkat | Owner: coling
Type: defect | Status: new
Milestone: | Component: module-raop-*
Resolution: | Keywords: streaming airport express
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Comment(by coling):
What it's labelled as really has no bearing whatsoever so feel free to
call it what you want :)
It is fully intensional that the silence is transmitted as without it, the
APEX gets into a strange state and we can no longer reconnect to it
without restarting PA. Even unloading and reloading the module isn't
enough. It's all rather strange. So sending silence keeps the connection
open and thus allows us to use it.
Also the timing methodology is totally basic. It uses the buffer of the
APEX itself to implement flow control where as we should really be feeding
it data in real time. This is all complex stuff.
There is also a much more accurate timing model available in the Airtunes
v2 protocol, but it's not fully understood or reverse engineered yet. Some
work has been done to get it working but the results still cause choppy
sound at present.
It's all work in progress, but as a lot of it is guess work it's a very
slow process. If you'd like to help out with reverse engineering the
protocol and such like, please let me know and I'll put you in touch with
the right people.
--
Ticket URL: <http://pulseaudio.org/ticket/771#comment:5>
PulseAudio <http://pulseaudio.org/>
The PulseAudio Sound Server
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