Do you mean that the application can use snd_pcm_rewind() to rewind the application pointer to hardware pointer and rewrite the next sample ( behind the hardware pointer ) for usb audio driver ? ( real time mixing like pulseaudio ) 2009/9/29 Clemens Ladisch <clemens@xxxxxxxxxx> > Anuj Aggarwal wrote: > > I found the solution, one can use mplayer to test forward/rewind > > feature of ALSA library. > > mplayer disables ALSA's underrun detection and uses snd_pcm_forward() to > recover from an underrun, if it happens. > > (To force an underrun, press Ctrl+S (then Ctrl+Q) to prevent mplayer > from updating its status line.) > > > HTH > Clemens > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel