Subject: Re: [linux-audio-dev] TAP-plugins reverb presets
From: Steve Harris (S.W.Harris_AT_ecs.soton.ac.uk)
Date: Thu Mar 04 2004 - 18:48:09 EET
On Thu, Mar 04, 2004 at 04:59:31 +0100, Alfons Adriaensen wrote:
> I had a look at the TAP RDF file, and compared the useful contents to the
> file lenght. The ratio of these two puts RDF in the 'bloated' category.
> And it's not easy to read or write at all.
It is not a problem if you use a library.
> What is more disturbing is that there are now at least 3 ways to obtain info
> on a LADSPA plugin port:
>
> 1. form the port descriptors,
> 2. by interpreting the name of the port (e.g. 'latency'),
That was partly my fault, and its not good, but the latency value can
depend on input port values, so I couldn't think of an alternative.
I'm begining to think that it should have been a fixed value (in RDF of
course ;) and plugins with varying latnecy shouldn't be corrected for).
> 3. from the RDF file, which may repeat or contradict some of 1.
Mostly default values. RDF defaults for LADSPA predate ladspa.h default
hints, which are a hack.
> To me this is a mess. It should be perfectly possible to extend the port
> descriptors in such a way that things like preset names, scale ticks,
> units etc. are available from there.
It would be, but its hard to keep binary compatibility and wouldnt it be
better to just have one extensible metadata format that you can use for
ports descriptions, scales, defaults, and presets?
- Steve
This archive was generated by hypermail 2b28 : Thu Mar 04 2004 - 18:49:13 EET