Li, Steve wrote: > I am trying to playback a multi-channel PCM stream, e.g. 5.1. Is there an API for configuring the channel positions? Yes, but not many devices support it. > calling snd_pcm_get_chmap() return NULL. Your device (driver), whatever it is, doesn't support reading it either. Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel