[LAD] jack and c++

[Paul Davis]

On Mon, 2008-11-10 at 20:10 +1100, cal wrote:
> Malte Steiner wrote:
> > For a new audio application I need to code a JACK client with C++. So
> > far I did it only with C and have a problem with giving the pointer to
> > the callback process function, which is a method now. So what is the
> > best performing solution? Is a delegate function a good idea, being
> > static and triggering the method in the objectinstance?
> 
> No idea what the best solution might be, but here's an approach I've used...
> 
> class AudioOutputJACK
> {
>    public:
>        [ ... ]
>    private:
>        static int ProcessJackCallback(jack_nframes_t nframes, void* arg);
> }

i like to add
         static int _process_callback (jack_nframes_t nframes, void*
arg) {
                  ThisObjectType* foo = (ThisObjectType*) arg;
                  return foo->process_callback (nframes);
         }
	 int process_callback (jack_nframes_t nframes) {
                /* the real thing, as a normal member function */
         }

the code is a bit cleaner that way.