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[Portaudio] ALSA still complaining of underruns using ...
https://portaudio.music.columbia.narkive.com/B7N0KFTE/alsa-still-complaining-of-underruns-using-pawritestream-api
Failure to recover from underrun in Alsa is sometimes caused by incorrect coding, but I don't know if. this coding is in portaudio or in the user application. I have some experience with coding directly for Alsa, and there are some strategies to recover from underrun. The developers recommend to call snd_pcm_recover.
underrun can cause stream to drop using ALSA · Issue …
https://github.com/JuliaAudio/PortAudio.jl/issues/19
@SimonDanisch reported an issue where he got an underrun and it cause the stream to block indefinitely (on a read! call). The error he got was: ALSA lib pcm.c:7963 ...
PortAudio: PaAlsaStream Struct Reference
http://www.portaudio.com/docs/v19-doxydocs-dev/structPaAlsaStream.html
PortAudio 2.0. Main Page ... PaTime PaAlsaStream::underrun: The documentation for this struct was generated from the following file: pa_linux_alsa.c;
r - ALSA lib pcm.c:8526:(snd_pcm_recover) underrun ...
https://stackoverflow.com/questions/65775120/alsa-lib-pcm-c8526snd-pcm-recover-underrun-occurred
While starting to learn about the audio R package and other packages based on I run into 2 problem: After some gess try and googling errors I manage to remove most of them and I only get those for now (Edit I still get the first messages they just became rare :/): ALSA lib pcm.c:8526: (snd_pcm_recover) underrun occurred ALSA lib pcm.c:8526 ...
c++ - Portaudio and ALSA: "Cannot obtain info for CTL …
https://stackoverflow.com/questions/27552562/portaudio-and-alsa-cannot-obtain-info-for-ctl-elem
After I copied the header portaudio.h and libportaudio.a to the test directory, I managed to compile successfully patest_sine8.c with: When I run the program the output is the following: PortAudio Test: output signed 8 bit sine wave. ALSA lib setup.c:548: (add_elem) Cannot obtain info for CTL elem (MIXER,'AC97 2ch->4ch Copy Switch',0,0,0): No ...
PortAudio - an Open-Source Cross-Platform Audio API
PortAudio is a free, cross-platform, open-source, audio I/O library.It lets you write simple audio programs in 'C' or C++ that will compile and run on many platforms including Windows, Macintosh OS X, and Unix (OSS/ALSA).
ALSA lib pcm.c:8503:(snd_pcm_recover) underrun …
https://github.com/audacity/audacity/issues/512
The output has the following: ALSA lib pcm.c:8503: (snd_pcm_recover) underrun occurred. audacity --version (audacity:5266): Gtk-WARNING **: 17:29:57.633: Unable to locate theme engine in module_path: "adwaita", Audacity v2.3.2. The text was updated successfully, but these errors were encountered: Copy link.
c - PortAudio appears to be broken on Debian/VirtualBox ...
https://unix.stackexchange.com/questions/402641/portaudio-appears-to-be-broken-on-debian-virtualbox
Both of my tests (the paex_sine sample and my WAV player) were able to complete playback successfully, though I did still get a few errors when initializing PortAudio: ALSA lib pcm_dmix.c:1052: (snd_pcm_dmix_open) unable to open slave ALSA lib pcm.c:2495: (snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2495: …
What happens when there's a buffer underrun?
https://portaudio.music.columbia.narkive.com/BGY7zQJi/what-happens-when-there-s-a-buffer-underrun
killed (if that's what happens during a buffer underrun) while it is. waiting on a mutex, I'm afraid it could leave the mutex in some. undetermined state, deadlocking my application. You shouldn't perform any blocking operations in the callback (such as. waiting on mutexes), it should return as quickly as possible.
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