[Stk] Realtime Effect Processing Using Callback

[BEN SHEPHERD]

Thanks for the quick response. I have tried and am able to run the  
duplex and sine programs. I don't believe either of them call the tick  
method though. I have used the debugger to show that the tick call  
(tested on both chorus and delay) is where the program generates the  
error. I don't currently have access to my code, but I'll send more  
later.

-Ben

On Jan 5, 2009, at 10:13 AM, "Stephen Sinclair" <sinclair at music.mcgill.ca 
 > wrote:

> Hi,
>
> 2009/1/5 BEN SHEPHERD <benshep at roadrunner.com>:
>>
>> I'm attempting to read from an input, process with a delay, and  
>> output in
>> realtime and my program stops when delay->tick is called with an  
>> "access
>> segmentation" or memory error.  I'm on Windows XP, using ASIO  
>> only.  I have
>> been able to successfully use the Duplex program which uses memcpy  
>> to copy
>> the inputBuffer to outputBuffer.  I've tried different classes  
>> including
>> Chorus but with the same result.  I apologize in advance if I'm  
>> missing
>> something simple, but I've poured through all the documentation and  
>> examples
>> I could find.
>
> "memory error" sounds like something not initialized or out of bounds.
> I would try stepping through it with a debugger to see if anything is
> strange.  Your callback looks okay to me but I can't tell more without
> seeing the whole program.
>
> You say you're able to run the examples without problems?
>
> Steve
>
>
>> int tick( void *outputBuffer, void *inputBuffer, unsigned int  
>> nBufferFrames,
>>        double streamTime, RtAudioStreamStatus status, void  
>> *dataPointer )
>> {
>> Delay *delay = (Delay *) dataPointer;
>> StkFloat *oSamples = (StkFloat *) outputBuffer;
>> StkFloat *iSamples = (StkFloat *) inputBuffer;
>>
>>   for ( int i=0; i<nBufferFrames; i++ )
>>      *oSamples++ = delay->tick(*iSamples++);
>>
>> return 0;
>> }
>>