Audio thread stops when calling paIsFormatSupported() while stream is running

[stijnvanbeek]

Describe the bug

When I call paIsFormatSupported() while an audio stream is running the audio thread stops and portaudio prints the following message:

||PaMacCore (AUHAL)|| Error on line 2530: err='-50', msg=Unknown Error

To Reproduce

1. start a duplex stream on Macbook Pro Speakers and built-in microphone device for both input and output. Samplerate 44100, buffersize 1024, paFloat

2. Stop the stream and close it.

3. Start a new stream with the same settings, except use buffersize 64.

4. Call paIsFormatSupported 5 times in a row, fill in a different samplerates each time: 44100, 48000, 88200, 96000, 192000.

    	PaStreamParameters inputParameters;
    	PaStreamParameters outputParameters;
    	inputParameters.device = inputDeviceIndex;
    	outputParameters.device = outputDeviceIndex;
    	inputParameters.channelCount = 1;
    	outputParameters.channelCount = 2;
    	inputParameters.sampleFormat = paFloat32;
    	outputParameters.sampleFormat = paFloat32;
    	inputParameters.hostApiSpecificStreamInfo = nullptr;
    	outputParameters.hostApiSpecificStreamInfo = nullptr;
    	const auto result = Pa_IsFormatSupported(&inputParameters, &outputParameters, sampleRate);
   

Expected behavior
I expected the audio thread to keep running

Actual behavior
What actually happened: The audio thread stops
||PaMacCore (AUHAL)|| Error on line 2530: err='-50', msg=Unknown Error

Desktop (please complete the following information):

• OS: [e.g. Mac OS] MacOs
• OS Version [e.g. 22] 14.1.2
• PortAudio version: 19.8