Hi,

the problem is here:

https://github.com/porres/pd-else/blob/2d53dfa7bd02b1fd102dbad7a2f9799df0a32e37/Code_source/Compiled/signal/xgate.mc~.c#L67-L68

signal_setmultiout() changes the signal pointer, so you must call it before assigning the signal pointer to the arg vector for dsp_addv()! Just swap these two lines and you should be good.

---

Some further notes:

1. I think you don't need x_outs at all when using dsp_addv(). The following lines are completely redundant:

https://github.com/porres/pd-else/blob/2d53dfa7bd02b1fd102dbad7a2f9799df0a32e37/Code_source/Compiled/signal/xgate~.c#L41-L42

2. Never ever send a Pd message directly from a perform routine! Always use a clock!

https://github.com/porres/pd-else/blob/2d53dfa7bd02b1fd102dbad7a2f9799df0a32e37/Code_source/Compiled/signal/xgate~.c#L50-L55

3. Why calloc/free instead of getbytes/freebytes? (In this particular case, it would also be safe to just use alloca())

https://github.com/porres/pd-else/blob/2d53dfa7bd02b1fd102dbad7a2f9799df0a32e37/Code_source/Compiled/signal/xgate~.c#L67-L72

Christof

On 09.08.2023 15:41, Alexandre Torres Porres wrote:

Ok, I tried building my new object and it crashes Pd as I expected.

Here's the original [xgate~] code, and I'm highlighting a specific line in it because the same thing in the "mc" version is what's crashing Pd.

https://github.com/porres/pd-else/blob/master/Code_source/Compiled/signal/xgate~.c#L57

and here's the [xgate.mc~] code, which is exactly the same thing https://github.com/porres/pd-else/blob/master/Code_source/Compiled/signal/xgate.mc~.c#L52

But now it seems "*x->x_outs[n]++" doesn't work. The only difference is that the outlets are now multichannel but Pd crashes even if the input is a single channel. 

Not sure yet if it is something about "dsp_addv" not working for multichannels. I also suspect I need to adapt the code a bit in this case for some unknown reason to me.

please help

thanks

Em qua., 9 de ago. de 2023 às 00:57, Alexandre Torres Porres <porres@gmail.com> escreveu:

Hi, I am having a hard time using "dsp_addv" with a multichannel external.

I am trying to make a multichannel version of [else/xgate~], which routes a signal to different outputs with crossfading. It originally uses "dsp_addv" so it can have a DSP routine with a variable number of outlets, which is specified by an argument. 

So now I want these outlets to output multichannel signals and I have run into trouble before trying to use "dsp_addv" with multichannel signals. I was able to avoid it before but now I can't and I wanna be sure before I try it.

thanks

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