Re: [alsa-devel] ca106 driver and six channel with jack

At Mon, 11 Feb 2008 12:54:23 +0100, Michael Westermann wrote:

Hello,

i'll use a Crative SB0570 card with the ca106 driver with jackd and 5.1. In qjackctrl I've only see two channles.

I've look im the ca106_main.c. In the struct snd_ca0106_playback_hw are the line

.channels_max = 2, //6,

Is it possible to set channels max to six? Or if anything develpment required?

The ca0106 driver doesn't support 6-interleved channles but three streams with two channels for front, rear and C/LFE. The six channels are compounded via alsa-lib plugins.

You could pass -Dsurround51 to jack for 5.1 output, I suppose. Get the newer alsa-lib and jack to work multi plugin correctly with JACK.

Takashi