[alsa-devel] Application supporting forward/rewind APIs

[Raymond Yau]

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 at ladisch.de>

> 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
>