2012-8-24 上午1:10 於 "Rafal Powierski" powierski@mediascore.de 寫道：
Developers,
how to enable multiple playback streaming?:
I am manipulating bios verb pin table, for special analog hardware, using
ALC886 and kubuntu / 64bit.
can you post the output of alsa-info.sh ?
I need a number of separate stereo (only stereo) i/o's I have correctly configured inputs: 4. single stereo adc port-C 1Ah 5. single spdif input 1Fh I have configured 3 independent stereo outputs, but ALSA is joining them
into one pcmC1D0p device.
1.port-A,15h 2.port-E,1Bh 3.port-D,14h
how do you configure them as non multi channel pin complex ? different association and zero sequence instead of same assosication and asscending sequence for multi channel pin complex with color jacks.
I have tried this on win7 and I got all associations as a separate
devices.
in my kubuntu 12.4LTS I have only one playback device.
this is the multi channel out device with headphone using front channel
the major problem is pulseaudio does not support multi- streaming
the headphone playback volume control is the slave of virtual master playback volume control.
Mixer is showing even more then needed number of volume controls, But there is only one playback device. it seams, all 3 outputs are connected to single DAC. I have tried to buildup more input devices - this is working good. I can have up to 3 (pcmC1D0c, pcmC1D1c pcmC1D2c)
it is possible to use two or more ADCs for multi channels capture similar to the multi channels playback by assign same stream tag and channel tag to the three ADCs
I can also have 2 outputs if I enable spdif-out.
the alc888s-vc seem has two independent digital output for spdif and hdmi
But there is no separate DAC assignment to separate devices resulting
from
my config.
Is it possible to get independent DACs devices under ALSA?
you can use alt_analog_playback stream for independent headphone port-A similar to those VIA codecs
the datasheet only mention 7.1 + 2 multi streaming using front and rear audio panel
if it really work on other operating system, you may try to increase the number of substreams of the alt_analog_playback and assign DACs to each alt_analog_playback substreams similar to the way which the driver assign ADCs to the capture substreams
however you need to disable the multi channel analog playback stream
or else is no such configuration possible and I have to use single
multiple channel device?
the alternative is to use jackd