ALSA application programming: route audio from one PCM to another

[Stefan Schoenleitner <dev.c0debabe@gmail.com>]

Hi,

I finally managed to write an ALSA I/O plugin that does what I want.
The plugin supports both playback and capture.

Now I would like to write a simple audio application that takes audio
samples

	* from the microphone and plays it back on my plugin
and
	* from the plugin (capture) and plays it back on the speakers


Hence as long as the application is running, it should do the above.

* Is there a special ALSA way to route audio from one PCM to another ?

* If not, I suppose it would just work if I open the plugin PCM and the
hw PCM at the same time and copy audio frames between them ?


cheers,
stefan