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Newsgroups: comp.lang.ada
Date: Thu, 12 Dec 2019 10:30:45 -0800 (PST)
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Subject: Re: Is this actually possible?
From: Lucretia <laguest9000@googlemail.com>
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Xref: reader01.eternal-september.org comp.lang.ada:57720
Date: 2019-12-12T10:30:45-08:00
List-Id: <comp.lang.ada>

On Thursday, 12 December 2019 18:24:55 UTC, Dmitry A. Kazakov  wrote:
> On 2019-12-12 16:15, Lucretia wrote:
> > On Thursday, 12 December 2019 15:14:33 UTC, Lucretia  wrote:
> > 
> > 
> >>>>> Why? You must know all variants in order to compute the array element
> >>>>> size. In Ada you cannot have it either:
> >>>>
> >>>> Because it's a binding to a C record: https://github.com/Lucretia/aplug/blob/master/ladspa/src/ladspa.ads#L113
> >>>
> >>> I cannot recognize problem there.
> >>
> >> That's a predefined struct, it's referenced in the Descriptors below it. It cannot be changed. The API is too cyclic AFAIK to make generics out of it all.
> > 
> > At the programmer's level, i.e. building a plug-in using the LADSPA API, they define ranges for their ports using that record above. Each port can have different ranges.
> 
> Can you post the C struct type and where it is used.

In ladspa.h and in exactly the same place as the Ada.

https://www.ladspa.org/ladspa_sdk/ladspa.h.txt

Here is the struct on a gh mirror: https://github.com/adsr/ladspa-sdk/blob/master/src/ladspa.h#L337

and it is used here: https://github.com/adsr/ladspa-sdk/blob/master/src/ladspa.h#L419