[help needed] failure in opening stream (ffffd8f2)

[ghost]

I'm on macOS I have installed cava using brew. The config dir wasn't there so I manually put it there. Background Music is running and I changed everything I could to
method = portaudio
source = "Background Music"
When running cava it displays that error and brakes my session.

[karlstav]

if I'm not mistaken ffffd8f2 means paInvalidChannelCount

cava hardcode this value to two here:

cava/input/portaudio.c

Line 136 in 03a8c85

inputParameters.channelCount = 2;

could you have more or less channels on your device?

[karlstav]

there is also a known issue with background music that

Only 2-channel (stereo) audio devices are currently supported for output.

might be related

[ghost]

I don't really understand what that means but I assume it means for each headphone, I tried changing the output of background music to vb-cable (and it indicated that there is only 2-channels) and at the beginning my terminal was blank but after some time it gave me same error. Now it gives me that error without being blank.

[karlstav]

hi @life-the-user,

sorry for the late reply, finally got around to actually test portaudio on mac and this does indeed happen. Luckily it is a known bug in portaudio. Just reinstall it and it should work fine.

brew reinstall portaudio

a simple brew upgrade might also solve it. I should have tried that first, too late now.

[cybardev]

I installed and set up everything, and this Error was resolved. But now whenever I start cava, it shows the same visualization, regardless of whether something is playing or not.

Is that normal, or is the expected behaviour when nothing is playing, a flat visualizer will be shown, and when something is playing, the audio output will be visualized?

PS: I'm on an M1 Macbook Air

This could also be an issue with my installation of BackgroundMusic, and I've created an issue there too: #592

[karlstav]

it shows the same visualization, regardless of whether something is playing or not.

elaborate, what is "the same"? screenshot?

is the expected behaviour when nothing is playing, a flat visualizer will be shown

yes.

[cybardev]

Like this:

I'm not playing any music, and this appears. I think it's because of my BackgroundMusic installation going wrong. I can't try Sunflower because I'm on M1.

[cybardev]

Nvm, it suddenly started working. From what I see (for my case), it's definitely because of BackgroundMusic, not cava.

[karlstav]

this is an issue with portaudio not cava.

to solve this issue reinstall portaudio:

brew reinstall portaudio

[satyajit-ink]

I have the same error on macOS, i've tried brew reinstall portaudio

[karlstav]

what is your macos and portaudio version? cava config? is the error code the same?

[satyajit-ink]

macOS 12.3.1
portaudio 19.7.0

Error: failure in opening stream (ffffd8f2)

Config

method = portaudio
source = "Background Music"

[karlstav]

works fine for me on macOS 11.6.4 (no time to upgrade at the moment)

that error code actually means "invalid number of channels". I just pushed a commit to print the portaudio errors as strings instead of hex number. Could there be something with your audio setup. The source needs to be two channels.

[domogami]

I'm actually also getting the same error with
Cava Version: 0.8.2.-17-g4515856-dirty
Portaudio Version: stable 19.7.0 (bottled), HEAD
Background Music Version: 0.4.0
MacOS: 12.4
M1 Max 16 inch
I have already reinstalled all of the packages and upgraded them with brew upgrade and I can't seem to figure out the source of this error Error: failure in opening stream (Invalid number of channels). If anyone who has had this error and fixed it can provide a more detailed report of how they were able to debug this it would be greatly appreciated 🙏

My ~/.config/canva/config

# ...
[input]
; method = portaudio
; source = "Background Music"

; method = alsa
; source = hw:Loopback,1

; method = fifo
; source = /tmp/mpd.fifo
; sample_rate = 44100
; sample_bits = 16

; method = shmem
; source = /squeezelite-AA:BB:CC:DD:EE:FF
# ...

[karlstav]

Your relevant config option is comented out. Try to remove the semicolon before

source = "Background Music"

If it still fails, you could try spundflower instead of background music. I recall there was some issues with background music in recent macos versions.

[domogami]

Your relevant config option is comented out. Try to remove the semicolon before

source = "Background Music"

If it still fails, you could try spundflower instead of background music. I recall there was some issues with background music in recent macos versions.

Oh my god thank you so much. I cannot believe I didn't realize that the semicolon was a comment! It's working perfectly now! Thank you again for noticing that!