Topic: How to write datas on the analog outputs of the AO4S-192-AIO extension
I'm trying to play a different sound on each RME AO4S-192-AIO analog outputs (software in C language).
I'm using ALSA API to do this but my problem is that I don't know how to select a specific output on the extension board.
Simply, the only thing that I currently can do is snd_pcm_open(...) on my "default" card which is the RME HDSP 9632, then snd_pcm_writei(...) and snd_pcm_close(...) when finished and I don't know how to select a specific output ?
I'm working on Linux RedHat 5 distribution and I have already installed alsa packages.
Thanks for your answers.