[LAD] RFC: Default discovery paths for LADSPA, LRDF, LV2 and DSSI (and more?)

[Steve Harris]

On 7 Jul 2009, at 11:06, Chris Cannam wrote:

> On Tue, Jul 7, 2009 at 10:56 AM, <hollunder at gmx.at> wrote:
>> Changing the ID with every plugin change seems ridiculous
>
> Well, it's just a question for your own judgment.  Regardless of the
> sort of identifier you use, when you change it your plugin will appear
> to be a different plugin, so you need to decide whether a change is
> big enough that your new version can't directly stand in for the old.
> That's all.
>
>> "- I'm still waiting on a unique ID from the LADSPA people, and so  
>> the
>> LADSPA unique ID needs to be changed. Right now it's set to 1000."
>> http://web.mit.edu/tbaran/www/autotalent.html
>
> no further comment m'lud.

I'm disinclined to think too much about how to fix LADSPA, all these  
problems and more are fixed in LV2. Plugin developers should be  
migrating off LADSPA.

But, what about, from now on, all LADSPA labels should be the plugin  
URI (only restriction is non whitespace, fine), and the UID should be  
(MD5($uri) % 2^32) & 0x1000000 so it doesn't clash with the previous  
allocated space. There's a reasonable chance of collisions if we have  
2^15 plugins in the wild (lets hope not), but as has been said,  
globally unique integer IDs are just a bad idea anyway.

Will break any hosts the check to see if the UID is in the legitimate  
range of course.

- Steve