forum::für::umläute writes:

Guenter Geiger schrieb:

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forum::für::umläute writes:

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Hi all !

I have one major problem and that is concerning writing externals (again !) Can I create an oject that has any (!) user-defined (via creation arguments) number of signal in/out-lets ? Me thinketh of something like the multichannel dac~/adc~ objects, but I have to access all ~inlets at the same (!) time and not sequentially...

This seems to be a matter of calling dsp_add with a sufficient number of arguments. I don't know how this could be done dynamically.

That's exactly what's my question about; surely I could do something really annoying like calling the dsp_add with 64 or so arguments and then use only the desired number; but of course that's not what I wanna do;

hannes

In this case you'd have to reimplement dsp_add the way you want it. It's not that hard, look in "d_ugens.c" for dsp_add and implement a function there which takes the following arguments:

EXTERN void dsp_add_v(t_perfroutine f, int n, t_int* args);

You can then rewrite dsp_add to not use the va_start, va_arg, va_end macros and just iterate over your supplied array of objects.

untested (and may not work at all, but you get the idea) ... :

void dsp_add_v(t_perfroutine f, int n, t_int* args) { int newsize = dsp_chainsize + n+1; int i; dsp_chain = t_resizebytes(dsp_chain, dsp_chainsize * sizeof (t_int), newsize * sizeof (t_int));

dsp_chain[dsp_chainsize-1] = (t_int)f;
for (i = 0; i < n; i++)
{
    dsp_chain[dsp_chainsize + i] = *args++;
}
dsp_chain[newsize-1] = 0;
dsp_chainsize = newsize;

}

add the prototype to m_pd.h and recompile pd ... and later, get Miller to include the function in the pd distribution :)

Well, after all that's how I would try to do it.

Guenter