[alsa-devel] ALSA DMIX support without MMAP ?

[Mark Brown]

On Fri, Jan 15, 2010 at 12:07:00PM +0000, ANISH KUMAR wrote:

> >The default linear resampler is not very good quality. You may use some 
> >sox resamplers from the alsa-plugins package, but they're more CPU 
> >intensive. Check google.
> 
> Actually i am working on soc platform(android-S3C6410) and wanted to
> use DMIX and some good resampler for my software mixing instead of
> current software mixing and resampling in upper layer(Above
> alsa-lib).DMIX is working fine but this resampling is causing some
> jitter.During rate conversion it looks for
> libasound_module_rate_speexrate.so which i don't have so its using
> default one causing the jitter.

Have you considered using PulseAudio for this?