On Mon, Dec 08, 2003 at 01:17:38PM -0800, Mark Knecht wrote: > This sounds encouraging. For those of us not in the know, can you tell me > anything about *what* dxs support is? Just point me at a web site with an > explanation if you have one. And what are dxs options 1, 2, 3 & 4 really > doing?
Seems that the only description is what "modinfo snd-via82xx" gives... 0 (unspecified) - consult the table of known subsystem IDs to find the real value (use 3 if the subsystem ID is not in the table). 1 - enable full support for DXS channels. 2 - disable DXS channels completely. 3 - enable DXS channels, but allow 48000 sample rate only. 4 - enable DXS channels, allow all sample rates, but don't set the rate in the codec (always set the codec to 48000). > Does this 2-channel motherboard sound chip actually do hardware mixing? > Or is that for other sound chips in this family? VIA 8233 (but _not_ 8233A) and 8235 can do hardware mixing of 4 streams (the streams must have the same sample rate - on the first open the sampling rate is set, and subsequent streams cannot use anything other). Actually the chip can support 6-channel output (usually the Mic In and Line In jacks can be switched to work as outputs - look in alsamixer for these options, use 'm' to toggle; however, I did not try this myself). However, in this mode the hardware mixing of multiple streams is not available (the second subdevice is used for 4- and 6-channel modes).
pgp00000.pgp
Description: PGP signature
