Re: Is this actually possible?

["Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>]

On 2019-12-12 21:54, Lucretia wrote:
> 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.

That was from the linked header file. Could you simply post C code of 
what you mean?

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de