# 6 channel dmix:
pcm.dmix6 {
type dmix
ipc_key 1024
ipc_key_add_uid false
ipc_perm 0660
slave {
pcm "hw:0,0"
rate 48000
format "S32_LE"
channels 6
period_time 0
period_size 1024
buffer_time 0
buffer_size 5120
}
}

# upmixing:
pcm.ch51dup {
type route
slave.pcm dmix6
slave.channels 6
ttable.0.0 1
ttable.1.1 1
ttable.0.2 1
ttable.1.3 1
ttable.0.4 0.5
ttable.1.4 0.5
ttable.0.5 0.5
ttable.1.5 0.5
}

pcm.duplex {
type asym
playback.pcm "ch51dup" # upmix first
capture.pcm "hw:0"
}

# change default device:
pcm.!default {
type plug
slave {
pcm "duplex"
}
}

# for aoss
pcm.dsp "duplex"

pcm.dsp1 "duplex"