MIDI Forum

I'm developing a library to work with MIDI. Now I want to implement parsing RPN/NRPNs. And right now it seems that I have no reliable way to parse NRP...

Yes, of course we can't interpret NRPN data. But if format is arbitrary, we can't even read data. For example, we see following bytes sequence: 99/xx ...

So the value of RPN/NRPN can be any, increment is always +1 unit of RPN, and decrement is -1, yes?

But if the format of NRPN can be totally arbitrary, is it possible to read them? For example, we can easily read custom meta events since meta events ...

Geoff, Now volume can be set. Thank you again.

Hi Geoff, Thanks for your help! It's a bug in my library. I indeed forgot to call midiOutOpen before volume manipulations.

Geoff, midiOutSetVolume is a Win API function so we are talking about Windows. In fact it looks like bug in this function (or in midiOutGetDevCaps ...

I think I didn't understand you 🙂 I call midiOutGetDevCaps, in returned structure I see that MIDICAPS_VOLUME flag is set, so device supports volume ...