rjo218@gmail.com

I am having trouble outputting a string through an outlet. It outputs once on the first run through, but then ceases to continue working.

Below is the culprit section of code, any insight would be greatly appreciated.

output = (char *)malloc(strlen("/rh/st 0 4096"));

sprintf(output, "/rh/st %d 0n", calcBoardNo(currentTrack, numba));

                    outlet_anything(x->outlet_1, s, 0, NULL);

I am having trouble outputting a string through an outlet.  It outputs once on the first run through, but then ceases to continue working.

Below is the culprit section of code, any insight would be greatly appreciated.  

					outlet_anything(x->outlet_1, s, 0, NULL);

outputting-a-string-through-an-outlet

On 22 janv. 09, at 16:47, Roberto J. Osorio-Goenaga wrote:

> I am having trouble outputting a string through an outlet. It 

> outputs once on the first run through, but then ceases to continue 

> Below is the culprit section of code, any insight would be greatly 

> output = (char *)malloc(strlen("/rh/st 0 4096"));

>                     outlet_anything(x->outlet_1, s, 0, NULL);

In the Max world strings are represented as symbols. You need to 

output a t_symbol. To create a t_symbol from a C string you can use 

sprintf(output, "/rh/st %d 0", calcBoardNo(currentTrack, numba));

outlet_anything(x->outlet_1, gensym(output), 0, NULL);

> Hello list:
>
> I am having trouble outputting a string through an outlet.  It  
> outputs once on the first run through, but then ceases to continue  
> working.
>
> Below is the culprit section of code, any insight would be greatly  
> appreciated.
> [code]
> ---BEGIN CODE---
>
> numba = atoi(parsed);
>
> output = (char *)malloc(strlen("/rh/st 0 4096"));
>
> sprintf(output, "/rh/st %d 0
> ", calcBoardNo(currentTrack, numba));
>
> s->s_name = output;
>
> free(output);
> 					outlet_anything(x->outlet_1, s, 0, NULL);

In the Max world strings are represented as symbols. You need to  
output a t_symbol. To create a t_symbol from a C string you can use  
gensym():

...
sprintf(output, "/rh/st %d 0", calcBoardNo(currentTrack, numba));

Now I'm having a strange issue, in which nothing will be output unless i turn debugging on in Max/MSP. Once this is done, output from my external works, even if I turn off debugging afterward.

I am investigating, and will post my findings for public reference if I am successful.

Now I'm having a strange issue, in which nothing will be output unless i turn debugging on in Max/MSP.  Once this is done, output from my external works, even if I turn off debugging afterward.  

Problem fixed, though not sure why yet...

First, I had a non-aligned pointer. Took care of that, and the problem persisted.

Not quite certain why, but removing a post() call in the routine eliminated the problem. Do post() and outlet_anything() not get along in the same routine?

First, I had a non-aligned pointer.  Took care of that, and the problem persisted.

Not quite certain why, but removing a post() call in the routine eliminated the problem.  Do post() and outlet_anything() not get along in the same routine?

On 22 janv. 09, at 19:01, Roberto J. Osorio-Goenaga wrote:

> Problem fixed, though not sure why yet...

> First, I had a non-aligned pointer. Took care of that, and the 

> Not quite certain why, but removing a post() call in the routine 

> eliminated the problem. Do post() and outlet_anything() not get 

post() is equivalent to the sprintf() in C, therefore it takes a C 

string (array of char). outlet_anything() talks to the Max patches, so 

you have to send t_symbol as the message name (constructed with 

gensym()), and an array of t_atom for the arguments of the message 

> Problem fixed, though not sure why yet...
>
> First, I had a non-aligned pointer.  Took care of that, and the  
> problem persisted.
>
> Not quite certain why, but removing a post() call in the routine  
> eliminated the problem.  Do post() and outlet_anything() not get  
> along in the same routine?

post() is equivalent to the sprintf() in C, therefore it takes a C  
string (array of char). outlet_anything() talks to the Max patches, so  
you have to send t_symbol as the message name (constructed with  
gensym()), and an array of t_atom for the arguments of the message  
that you want to output.

Outputting a string through an outlet