Re: [fluid-dev] callbacks

[David Henningsson]

On 2010-11-07 21:20, Jari Suominen wrote:
> Hi there!
>
> I'm developing simple sampler program on top of fluidsynth and am
> wondering that is there any way to receive callbacks when voices
> finish/loop etc.

Depending on what you're planning to do, you might want to help out with 
SWAMI or QSynth instead of building yet another FluidSynth frontend.

> Like if I have one sample that is x seconds long
> assigned to some key on my soundfont and after that sample has played
> through.
>
> Reason for doing this is that I would like to build a custom controller
> that would have visual feedback of what is happening inside fluidsynth
> engine.
>
> Any ideas how to achieve this. Or did I just miss something in the API?

There is no way (in the API) to get such callbacks. It is possible you 
might be able to poll for whether a voice has disappeared or not using 
fluid_synth_get_voicelist. Note that usage of this function from a 
thread-safe perspective might need some additional thought to make sure 
the voices don't disappear in parallel with you trying to read them...

// David