Hi all,

I would like to allow multiple applications to access the audio inputs and outputs of my system at same time. I succeded to make it for the audio outputs by using the dmix plugin, but I don't know how to do it with the dsnoop plugin because it seems I cannot link directly the multi plugin to dsnoop. Here is the error message I have with the /etc/asound.conf file presented below :

arecord -D"alduplex" -c4 -r48000 -fS16_LE /tmp/test.wav ALSA lib pcm_direct.c:1490:(_snd_pcm_direct_get_slave_ipc_offset) Invalid type 'multi' for slave PCM arecord: main:654: audio open error: Invalid argument

Does someone know how can I route the multi plugin to dsnoop ?

Thanks in advance

My /etc/asound.conf file :

#output device pcm.AD1989A_outputs{ type hw card 0 }

pcm.aldmix{ type dmix ipc_key 1024 ipc_perm 0666 slave{ pcm AD1989A_outputs }

}

#input device pcm.4channelsDeinterleaved { type multi

slaves.a.pcm "hw:0,0,0" slaves.a.channels 2 slaves.b.pcm "hw:0,0,2" slaves.b.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.AD1989A_inputs { type route slave.pcm "4channelsDeinterleaved" ttable.0.0 1 ttable.1.1 1 ttable.2.2 1 ttable.3.3 1 }

#4 channels dsnoop (plug-in for capture) pcm.aldsnoop{ type dsnoop ipc_key 1025 ipc_perm 0666 slave{ pcm AD1989A_inputs rate 48000 channels 4 }

}

pcm.alduplex { type asym capture.pcm "aldsnoop" playback.pcm "aldmix" }

### CTL DEVICES (controls) ctl.mixer0 { type hw card 0 }