Update device list by reloading portaudio dll

[HaujetZhao]

import sounddevice as sd

print(sd.query_device)

# some device info listed
# then plug some new device

sd._terminate()
sd._initialize()
print(sd.query_device)

# device info list unchanged

sd._terminate()
sd._ffi.dlclose(sd._lib)
sd._lib = sd._ffi.dlopen(sd._libname)
sd._initialize()
print(sd.query_device)

# device info list updated, it works fine

# is it possible to close the dll when sd._terminate()
# and reopen the dll when sd._initialize()
# so that the device_list can be updated by re initialize sounddevice

[mgeier]

# is it possible to close the dll when sd._terminate()
# and reopen the dll when sd._initialize()

Yes, I guess it would be possible, but the idea is that those two functions wrap the PortAudio functions Pa_Terminate() and Pa_Initialize(), respectively.

If additional functionality is desired, additional functions should be created.

But if the sequence of statements you mentioned is working for you, feel free to just use them in your code.

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Related: #125, #343, #382.