Hi, i'd like to let the user input a wavefile's tempomap by "tapping" along while the file plays.
This would be a trivial task in a dedicated program. Just create a jack client, create a wave output (attach it to system_output), create a midi input (attach it to whatever the user likes). Then play back the file, and whenever there's a certain NOTE ON event in the midi input port, write its timestamp into a buffer. When playback has finished, stop the jack client, and translate the list-of-timestamps into a tempomap. (Interpret it as: each timestamp is one "beat".) So far, so easy. But how could i integrate this with MusE? I guess MusE does not allow for something as simple as "just write this out to jack", right? Do you think i should somehow tightly integrate this with MusE, e.g. in Audio::process()? I don't like this idea much, because i had to turn process() into a state machine then, but what do you think? Tim, Robert, anyone else? Or should i just implement this as external program, or at least as dedicated audio client? I mean, I can create a new jack_client from the GUI, and register its own callback to it, and then destroy this client when done. I'm not sure whether I favour the "create a new client from within MusE" solution or the "write a standalone program with a GUI". What do you think? Cheers, flo
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