I’ve been trying to solve this for quite some time, but still haven’t succeeded. I’m trying to port an OSX project to Raspberry pi, which involves audio recording and playback. I have connected a C-Media USB Headphone set, which works with both sound in and out independently (using ofSoundPlayer and ofxVideoRecorder), set up through ofSoundStream.
When I run this on an try to record and playback sounds at the same time, I get the following error:
AL lib: (WW) alc_initconfig: Failed to initialize backend "pulse" AL lib: (EE) alsa_open_playback: Could not open playback device 'default': Device or resource busy [ error ] ofOpenALSoundPlayer: loadSound(): couldn't create stereo buffers for "data/audio_samples/keypad/4.wav": 40964 AL_INVALID_OPERATION
Does anyone know how this could be fixed? If anyone has some sketches with simultaneous in and out, I’d be very happy to get some advice. Thanks!