On Fri, 16 May 2008, Ashwin Chandra wrote: > Hello, > > I am having an issue with the Alsa mixer. Currenty I have a function > that gets the volume via snd_mixer_selem_get_playback_volume. This > function works fine to get the last-set volume if my application is > setting the volume. However if I change the volume using an outside > source, such as alsamixer or gnome-volume-control and then I run the > above function, the old volume that my application had set last is > returned. > > Now I edited amixer's source code to put a while(1) around the same > functions (the snd_mixer_selem_get_playback_volume), and it too does not > get the correct volume if set from an outside source. Alsamixer on the > other hand seems to work find, but I am not quite sure how they do it. I > thought maybe I had to reinitialize the alsa interface (ie. > snd_mixer_close...and then open, attach, register, etc), but it doesn't > seem that alsamixer does that. > > Does anyone have any suggestions about what I can do to get the correct > volume if set by an outside source?? snd_mixer_handle_events() is function which updates changed controls. Values are cached. Jaroslav ----- Jaroslav Kysela <perex@xxxxxxxx> Linux Kernel Sound Maintainer ALSA Project, Red Hat, Inc. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
