[Stk] Realtime Effect Processing Using Callback

[BEN SHEPHERD]

I've added breakpoints inside the tick (and computesample) functions,  
but it doesn't make it that far. I'll look at the pointer creation,  
but I'm using code from the tutorials, as I attached previously. In  
main() I'm doing the typical:
Delay * delay = new Delay();
Followed by 2 setDelay functions. I then pass &delay via the  
openstream function.

-Ben

On Jan 5, 2009, at 11:52 AM, "Stephen Sinclair" <sinclair at music.mcgill.ca 
 > wrote:

> If the debugger finds that it is crashing when delay->tick() is
> called, there may be a problem with your "delay" pointer I would
> guess, but if it manages to step into the Delay::tick() function, and
> then crashes inside it, let us know what line it is crashing on.
>
> Steve
>
> On Mon, Jan 5, 2009 at 11:18 AM, BEN SHEPHERD  
> <benshep at roadrunner.com> wrote:
>> 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;
>>>> }
>>>>
>>
>>
>>
>>
>
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