Re: [Csnd-dev] CPOF - omit outargs?

You should use the InPlug base class instead of PlugIn. It has only one template argument.


Prof. Victor Lazzarini
Maynooth University
Ireland

> On 6 Jul 2024, at 08:45, Pierre Clisson <[email protected]> wrote:
> 
> Hi,
> 
> I have an opcode that expects an array as input:
> 
> csnd::plugin<MyOpcode>(csound, "myopcode", "k[]", "k[]", csnd::thread::k);
> 
> For performance reasons, I modify this array in place instead of instantiating a new object:
> 
> csnd::Vector<MYFLT> &in = inargs.vector_data<MYFLT>(0)
> csnd::Vector<MYFLT> &out = in;
> // ...
> 
> So, it doesn't make sense to return anything from this opcode. But if I declare the opcode like this, the code builds but segfaults during execution:
> 
> struct MyOpcode : csnd::Plugin<0, 1> {
> // ...
> };
> csnd::plugin<MyOpcode>(csound, "myopcode", "", "k[]", csnd::thread::k);
> 
> How can I omit outargs?
> 
> Thanks,
> 
> Pierre
> 
>