[Alsa-user] Multi and Format
We are designing a new USB sound card that combines analogue and digital
outputs using the USB 2.0 audio driver.
The incoming audio stream can be 32bit 44.1 to 192
To combine the analogue and the digital I am using a multi, but cannot specify
different formats for the slaves when using a multi. Ideally I want to set the
analogue at 32bit and force the digital to 24bit
This all seems to be working ok without the format being specified, however I
would like to know if anyone knows a way to fix the format for each output when
using a multi?
Any suggestions would be greatly appreciated.
#/etc/asound.conf
pcm.player1 {
type softvol
slave.pcm "player1v"
control.name "p1.m"
control.card 0
resolution 2
}
pcm.player1v {
type softvol
slave {
pcm "player1mix"
}
control {
name "p1.v"
card 0
}
}
pcm.player1mix {
type plug
slave.pcm {
type multi
slaves {
a { pcm "analog1r" channels 2 }
b { pcm "digital1r" channels 2 }
}
bindings [
{ slave a channel 0 }
{ slave a channel 1 }
{ slave b channel 0 }
{ slave b channel 1 }
]
}
ttable [
[ 1 0 1 0 ]
[ 0 1 0 1 ]
]
}
pcm.analog1r {
type rate
slave analog1s
}
pcm_slave.analog1s {
pcm "hw:0,0"
rate 48000
}
pcm.digital1r {
type rate
slave digital1s
}
pcm_slave.digital1s {
pcm "hw:0,1"
rate 192000
}
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Re: [Alsa-user] Hotone Ravo USB audio
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