sfront control drivers

From: Stefan Kersten (steve@k-hornz.de)
Date: Wed Mar 01 2000 - 08:24:58 EST


Hello, I'm new to the list and only recently came across the MPEG4
standard and the sfront SAOL implementation (finding both very
promising).

Currently I am writing a control driver for sfront, making use of the
OpenSoundControl (udp-based) protocol.

(http://cnmat.cnmat.berkeley.edu/OpenSoundControl/)

A hurdle I came across is the fact that in sfront new SASL-event-calls
have to hardcode the instrument label in symbols, making it impossible
to instantiate new events without having to rewrite/-compile the driver
for each orchestra. Is there a simple way to come across this problem
(maybe it even isn't one :)?

I also wondered how SAOL and SASL deal with realtime SASL-events
(i.e. events that do not have a predictable duration); is there a
something similar to MIDI's noteon/-off concept?

And one more thing: I did not find anything in the standard concerning
comments in SASL scores (nor did I find any comments in the sfront
example scores); has this simply been forgotten?

Many thanks for any hints, <sk>

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