Re: Is this actually possible?

[Lucretia <laguest9000@googlemail.com>]

On Thursday, 12 December 2019 19:09:25 UTC, Dmitry A. Kazakov  wrote:
> On 2019-12-12 19:30, Lucretia wrote:
> > 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
> 
> Maybe I am dense, but what I see is this:
> 
>     typedef struct _LADSPA_PortRangeHint {
> 
>       /* Hints about the port. */
>       LADSPA_PortRangeHintDescriptor HintDescriptor;
> 
>       /* Meaningful when hint LADSPA_HINT_BOUNDED_BELOW is active. When
>          LADSPA_HINT_SAMPLE_RATE is also active then this value should be
>          multiplied by the relevant sample rate. */
>       LADSPA_Data LowerBound;
> 
>       /* Meaningful when hint LADSPA_HINT_BOUNDED_ABOVE is active. When
>          LADSPA_HINT_SAMPLE_RATE is also active then this value should be
>          multiplied by the relevant sample rate. */
>       LADSPA_Data UpperBound;
> 
>     } LADSPA_PortRangeHint;
> 
> and
> 
>     typedef int LADSPA_PortRangeHintDescriptor;
>     typedef float LADSPA_Data;
> 
> Where is a problem?

You didn;'t look at both links I posted.