[LAD] Realtime inter-thread communication
len at ovenwerks.net
Mon Feb 29 15:27:45 UTC 2016
On Mon, 29 Feb 2016, Sebastian Gesemann wrote:
> I've started writing a software synthesizer in C++ (using SDL2 for
> now) for kicks and giggles and ran into the problem of having the
> event loop thread that listens for keyboard events communicate with
> the audio callback.
> Are there any recommendations for how to pass real-time events (note
> on, note off, etc) to such an audio callback? I figured, this is
> already a solved problem and that I could benefit from your
> experiences. Maybe you know of some nice open-source C++ queue
> implementation that is suitable in such a situation.
I have used jackd ringbuffer for that.
If you don't want to link against jack you could probably pull the code
out to use in your application. the ring buffer is a polled setup, so
every time you do some audio processing you need to check the ring buffer
to see if there are any new bytes to process.
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