[alsa-devel] alsa-lib, dmix, and snd_pcm_open_conf function
bidou at videotron.qc.ca
Mon Sep 1 19:05:36 CEST 2008
I have a problem using dmix on my embedded system (manual installation of
When I play a sound with aplay, it works well.
When I try -D dmix or -D plug:dmix parameter, it doesn't work.
The output is:
aplay: main:547: audio open error: Operation not permitted
I located my problem in alsa-lib, around line 2154 of alsa-lib/src/pcm/pcm.c:
err = snd_pcm_open_conf(pcmp, name, root, pcm_conf, stream, mode); (in
err result is -1 when it's used with dmix...
I don't know how works alsa-lib. I suppose snd_pcm_open_conf has something
related with configuration files... Since I have all default configuration
files... Maybe I must tweak some to be able to use dmix...
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