> > How about those sound card which use multi plugin for multi channels (e.g. > > emu10k1 , c0106 and cs4630) as they can also provide a rear or clfe device > > for independent stereo playback ? > > The case of emu10k1 is a bit difficult, as the routing is completely > dynamic and determined in alsa-lib plugin. So, my plan for this case > is to provide the chmap override in the alsa-lib config definition for > emu10k1 surrounds. > But the routing of device 0 "hw" is not as same as front device since the driver pan the output to both front and rear jacks (upmixing). Does all pcm devices support channel map ? How about those 16 channels multichannel playback and capture devices ? card 0: Live [SB Live! Platinum [CT4760P]], device 2: emu10k1 efx [Multichannel Capture/PT Playback] Subdevices: 8/8 card 0: Live [SB Live! Platinum [CT4760P]], device 3: emu10k1 [Multichannel Playback] Subdevices: 1/1 **** List of CAPTURE Hardware Devices **** card 0: Live [SB Live! Platinum [CT4760P]], device 2: emu10k1 efx [Multichannel Capture/PT Playback] Subdevices: 1/1 BTW. It seem that the patch for USB audio is still missing as some USB card support 5.1/7.1 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20120917/5e78a7e1/attachment.html>
