2008/6/7 Lee Revell: >> 2- Is snd_pcm_avail_update() really useless when not using mmap? > > The pcm.c example referenced right below that comment would indicate otherwise: snd_pcm_delay() was added after that example was created? >> I have a SB Live! where snd_pcm_delay() always returns the correct >> value, without any need for snd_pcm_avail_update(). But the same code >> in the same machine with an hda-intel AD1988 needs a call to >> snd_pcm_avail_update() before snd_pcm_delay() to give the correct >> result. Without it snd_pcm_delay() always returns the value that *was* >> correct in the last snd_pcm_writei() call. >> >> So should the "application frame position" be always updated, or only >> in read/write operations? In the first case AD1988 fails, in the >> second case perhaps SB Live! is making too mucho work ;-) Rereading this... "application frame position" only is updated in read/write operations since is the only moment were it changes :-p The problem would be with the update of the "sound frame position". > Is this with the latest ALSA HG sources? openSUSE Build Service multimedia:audio packages: - alsa-1.0.16.hg20080510 - libasound2-1.0.16.hg20080510 - alsa-driver-kmp-default-1.0.16.20080606_2.6.22.17_0.1 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
