Make FlexASIO configurable

[dechamps]

In #3 multiple users are feeling of pain of having no control of how FlexASIO behaves. We should provide at least some basic way of configuring FlexASIO. Potential configuration knobs could include:

• Debug output (see Make it easier to get FlexASIO debug logs #5)
• Which PortAudio backend to use (WASAPI, DirectSound, etc.), as well as relevant PortAudio options
• Which device to use (preferably addressed in a way that survives reshuffling of devices)
• Minimum, maximum and preferred buffer sizes

Doing this in a GUI would take a lot of time that I don't have, so for now we might have to make do with something more basic, like a configuration file or registry entries.

[josephernest]

+1

Would be super useful.

My 2 cents:

GUI: not needed for now (this is long to code...)
Registry: not very convenient for user.
Simple and enough for 99,9% of the use cases:

C:\Program Files\FlexASIO\config.ini
####################################
api=WASAPI
deviceID=14
buffer=512
samplerate=44100

[omarcostahamido]

+1
and also define the number of channels? just in case...?

[dechamps]

FlexASIO is now configurable through a configuration file. Therefore I am closing this issue.

Only two settings are configurable for now, for choosing the backend. I will keep separate issues open for requests for specific configuration options:

• For selecting input and output devices, see Make the input and output devices configurable #22.
• For selecting buffer sizes and other latency options, see How to set latency? #19 and FlexASIO should be smarter about the default buffer size #20.
• For adjusting sample type (float, 16-bit integer, etc.), see FlexASIO should support sample types other than 32-bit float #13.