----- Original Message -----

From: James Hearon

To: csound@lists.bath.ac.uk

Sent: Saturday, August 30, 2008 10:42 PM

Subject: [Csnd] software bus linux

Hi,
I'm stuck on software bus on linux.  Works on MinGW, but I can't seem to pass something on Linux.  Not sure what's failing.  The .csd plays but prints '0' or default for "pitch".  Seems like the string is going thru, but maybe not the ptrtoptr?  Spout etc. works fine on Linux.  Just can't seem to get software bus firing off.  Tried also chani, and both C and C++ approaches to csoundGetChannelPtr.  No joy.  Not sure what it needs on Linux to fire the software bus.

thank you.
----
int main(void)
{
    CSOUND *csound = csoundCreate(0);
       const char *argv[] = {"csound", "ChnGet.csd" };
    int result= csoundCompile(csound, 2, (char **)argv);
    MYFLT *pvalue;
   
    if(!result)
    {
     while(csoundPerformKsmps(csound)==0){
                                      
    if (csoundGetChannelPtr(csound, &pvalue, "pitch",
       CSOUND_INPUT_CHANNEL | CSOUND_CONTROL_CHANNEL) == 0)
       *pvalue = 400;
     
       } 
   
    }
    csoundDestroy(csound);
    return result;
}
======
;sco
chn_k "pitch", 1

gifn ftgen 1, 0, 16384, 10, 1

    instr    1   
k1 chnget "pitch"
    printk2 k1
asig oscili 5000,k1, 1
out asig
endin

---

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Great.   Excellent catch.  I was going dingy trying to figure out difference
between MinGW and Linux vers.  I overlooked MinGW was float build and Linux
was double build.  I added precompiler USE_DOUBLE, made sure *pvalue was
float or double and it works now.  I've been all up in Kdev, KDbg trying to
figure this out.  So glad I was able to get help for this one.
-- 
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