[alsa-devel] Driver for user-space sound source/sink(s)

Hi

We're considering implementing the driver for user-space sound input/output. For example: "Line in" is provided by some application by streaming data to a file in /dev/..., "Line out" can be read by any application from /dev/... It would be also nice to have arbitrary number of streams, for example to have different applications to "capture" audio from different sources.

I wonder if we reinvent the wheel, or maybe there's an ongoing project for the similar driver. If not, could anyone advise how this can be achieved. We had no experience with ALSA before, but pretty strong in C/C++ development.

Thanks!

Alex