RuntimeError: Property was expected to be a blob, but is not a blob

[JorianRennen]

Hi there,

While trying to get all microphones via sc.all_microphones, i got this error.
It seems to be in the channel part of the return, but I have no idea where this is coming from or how to fix this.
sc.default_microphone works just fine.

Here the traceback:
Traceback (most recent call last): File "C:/Users/Jorian Rennen/PycharmProjects/Test_project/Feedback_terminal.py", line 41, in <module> print(sc.all_microphones(include_loopback=True)) File "C:\Users\Jorian Rennen\PycharmProjects\Test_project\venv\lib\site-packages\soundcard\mediafoundation.py", line 464, in __repr__ return '<Microphone {} ({} channels)>'.format(self.name,self.channels) File "C:\Users\Jorian Rennen\PycharmProjects\Test_project\venv\lib\site-packages\soundcard\mediafoundation.py", line 395, in channels raise RuntimeError('Property was expected to be a blob, but is not a blob') RuntimeError: Property was expected to be a blob, but is not a blob

Thank you in advance!

[bastibe]

This means that one of your sound card does not return the channels property as a blob. How strange.

This happens in https://github.com/bastibe/SoundCard/blob/master/soundcard/mediafoundation.py#L379

To debug this, you'll have to debug into the linked channels function, check the returned type (propvariant.ptr[0].vt), and figure out how to get a valid channel from the propvariant.

If you find a solution, I'll be happy to merge it. But I can't debug this on my end, because none of my sound cards behave this way.