Re: [Hampshire] ALSA multiple digital outputs?

On 06/14/2010 07:40 PM, Stephen Rowles wrote:
> does anyone know if it's possible to specify 2
> outputs so I can have spdif and HDMI output at the same time? I've tried
> googling but I've not found anything other than one horribly complicated
> example of mixing analog audio which didn't seem to cover what I wanted.
>
>
To answer my own question, in case it helps anyone else searching the
archives in the future, the following can be added to an .asoundrc
config file to create a new device called "both" which will output
stereo sound to both my HDMI and SPDIF outputs using mplayer -ao
alsa:device=both

pcm.both {
         type route
         slave {
                 pcm multi
                 channels 4
         }
         ttable.0.0 1.0
         ttable.1.1 1.0
         ttable.0.2 1.0
         ttable.1.3 1.0
}

pcm.multi {
         type multi
         slaves.a {
                 pcm "tv"
                 channels 2

         }
         slaves.b {
                 pcm "receiver"
                 channels 2
         }
         bindings.0.slave a
         bindings.0.channel 0
         bindings.1.slave a
         bindings.1.channel 1
         bindings.2.slave b
         bindings.2.channel 0
         bindings.3.slave b
         bindings.3.channel 1
}

pcm.tv {
         type hw
         card 0
         device 3
         channels 2
}

pcm.receiver {
         type hw
         card 0
         device 1
         channels 2
}