Hi, After changing the uninitialised values I've kept comparing the behaviour of ekiga with ALSA and Pulseaudio.
I've thought of reporting here what I have found in the hope that someone could have a better understanding and maybe identify the core of the issue to report to PulseAudio. I am analysing what happens when I play the ringtone via the conf dialog. Basically in PSoundChannleALSA there is a method "Open()". It is called twice, the first time it gives slightly different results (even after correcting the uninitialised), but the second time it gives the same values 2009/01/26 20:39:14.818 0:10.651 AudioEvent...0xb6804b90 Alsa Buffer time is 20000 2009/01/26 20:39:14.818 0:10.651 AudioEvent...0xb6804b90 Alsa Period time is 5000 Afterwards the actual audio output starts. This is done via Write(). What happens when using the pulse-alsa module is that there are many underruns after calling snd_pcm_writei(). In order to fix the underrun snd_pcm_prepare is called and I think this is responsible for the very bad quality AND for the fact that the stream volume controller in the PulseAudio Volume Manager keeps disappearing and reappearing. I've tried snd_pcm_recover() but there is no difference. It seems that each time an underrun occurs, a nasty glitch can be heard. I have no idea what causes the underrun. Does anybody have a better understanding of all that? _______________________________________________ Ekiga-devel-list mailing list Ekiga-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/ekiga-devel-list
