Subject: Re: [linux-audio-dev] XAP: a polemic
From: David Gerard Matthews (dgm4+@pitt.edu)
Date: Sun Dec 15 2002 - 17:40:12 EET
Paul Davis wrote:
>>>We've been talking about 'TEMPO' and 'TRANSPORT' and 'TICKS' and 'METER'
>>>controls, which (honestly) kind of turns my stomach. This is not what
>>>controls are meant to be doing. the answer strikes me in shadowy details:
>>>
>>>Each host struct has a timeline member. Plugins register with the host for
>>>notification of ceratin things:
>>>host->register_time_event(plugin, event, function);
>>>events:
>>> TIME_TICKS // call me on every tick edge
>>> TIME_TRANSPORT // call me when a transport happens
>>> TIME_METER // call me when the meter changes
>>>
>
>this is the best suggestion so far. i love callbacks. note that
>"meter" includes both tempo and time signature. you knew that, though.
>i can't see anyone wanting to use TIME_TICKS.
>
>--p
>
Callbacks do make sense here, I agree. You never know about the ticks,
though. In film scoring, it's not uncommon
to nudge things around a tick or two here or there to enable audio
events to sync up with the picture. I can see wanting
to chase audio on every tick in some very high resolution contexts like
that.
-dgm
This archive was generated by hypermail 2b28 : Sun Dec 15 2002 - 17:39:45 EET