Does not appear to work with PipeWire about portaudio

[gordonklaus]

Hi Alexander :)

I'm not too familiar with Linux audio but maybe I can help. Otherwise you could check in with the developers of the real PortAudio library (around which this package a just a wrapper).

I don't see anything in the output to indicate that sigourney is failing to open a device.

I see that sigourney is opening the default device. You could try modifying it (or perhaps easier, modifying one of the examples in this repo) to explicitly open the device of interest, in case the default device is not what you expect. Something like:

devs, _ := portaudio.Devices()
dev := deviceOfInterest(devs)
p := portaudio.LowLatencyParameters(nil, dev)
stream, _ := portaudio.OpenStream(p, ...)

Does that make any difference?

[bderrly]

Just a very simple C program shows that the error is likely somewhere with PortAudio and PipeWire.

#include "stdio.h"
#include "stdlib.h"
#include "portaudio.h"

// gcc main.c -lportaudio -lrt -lm -lasound -ljack -pthread -o pa_out_index

int main() {
    PaError err;
    err = Pa_Initialize();
    PaDeviceIndex default_output = Pa_GetDefaultOutputDevice();
    printf("default output device index %d", default_output);
    return EXIT_SUCCESS;
}

which returns

ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
Expression 'alsa_snd_pcm_hw_params_set_buffer_size_near( pcm, hwParams, &alsaBufferFrames )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 923
Expression 'alsa_snd_pcm_hw_params_set_buffer_size_near( pcm, hwParams, &alsaBufferFrames )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 923
Cannot open DB environment: Permission denied
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Cannot open DB environment: Permission denied
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
ALSA lib pcm_oss.c:397:(_snd_pcm_oss_open) Cannot open device /dev/dsp
ALSA lib pcm_oss.c:397:(_snd_pcm_oss_open) Cannot open device /dev/dsp
ALSA lib confmisc.c:160:(snd_config_get_card) Invalid field card
ALSA lib pcm_usb_stream.c:482:(_snd_pcm_usb_stream_open) Invalid card 'card'
ALSA lib confmisc.c:160:(snd_config_get_card) Invalid field card
ALSA lib pcm_usb_stream.c:482:(_snd_pcm_usb_stream_open) Invalid card 'card'
Cannot open DB environment: Permission denied
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
default output device index 26

[gordonklaus]

Thanks @bderrly. I'll close this issue, then.