Re: [ecasound] ecs-files

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Subject: Re: [ecasound] ecs-files
From: janne halttunen (jhalttun@pp.htv.fi)
Date: Fri Sep 14 2001 - 15:24:23 EEST

On Mon, 10 Sep 2001, Kai Vehmanen wrote:

> On Wed, 29 Aug 2001, janne halttunen wrote:
>
> > if you people could be so kind to send me some of your ecs-files, to serve
> > as example when Im making my ecs-file editor, Id be grateful.
>
> Btw; do you think the format (or more specifically the file layout) of ecs
> files should be changed?

I can't think of anything right now.

> Now when writing an ecs-file, ecasound just dumps the necessary info
> without worrying about readability, etc. It's probably not wise to make
> changes that would cause compatibility problems, but it would be quite
> easy to alter the basic layout, or for instance, add comment lines,
> etc. Any thoughts?

Comments are always nice :)
One sleepless night, I thought about an XML-representation of the setup,
something in the lines of:

<CHAINSETUP>
<NAME>example</NAME>
<BUFFER>1024</BUFFER>
<SR>44100</SR>

<CHAIN>
<NAME>default</NAME>
<INPUT>file.ewf</INPUT>
<OUTPUT>/dev/dsp</OUTPUT>
...
</CHAIN>
</CHAINSETUP>

..but I don't think it would be that useful. What would, instead, be of use
in XML, is the cop-registers:

<EFFECT type='internal'>
<NAME>Amplify</NAME>
<DESC>Amplifies signal by amplify-% percent.</DESC>

<PARAMETERS>

<PARAM number='1'>
<NAME>amplify-%</NAME>
<DESC/>

<DEFAULT>0</DEFAULT>

<UPPER/>
<LOWER>0</LOWER> <!-- don't know if this is the case -->

<TOGGLE>false</TOGGLE>
<INTEGER>false</INTEGER>
<LOGARITHMIC>false</LOGARITHMIC>
<CHANGABLE>true</CHANGABLE> <!-- the same as the bool 'output' in eca-operator.h -->

</PARAM>
</PARAMETERS>
</EFFECT>

I think this would be quite useful to application developers. I am half
there myself, bar the param descriptions.
What would be the best way to start gathering that info about effects'
parameters?

janne 

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