Audio output routing configuration

hardware/audio/asoundrc

@@ -0,0 +1,60 @@
+# /home/pi/
+
+pcm.!default {
+  type asym
+  playback.pcm "LoopAndReal"
+  capture.pcm "looprec"
+}
+
+pcm.looprec {
+    type hw
+    card "Loopback"
+    device 1
+    subdevice 0
+}
+
+pcm.LoopAndReal {
+  type plug
+  slave.pcm mdev
+  route_policy "duplicate"
+  ttable.0.0 1;
+  ttable.1.1 1;
+  ttable.0.2 1; # front left
+  ttable.1.3 1; # front right
+}
+
+pcm.mdev {
+  type multi
+  slaves.a.pcm pcm.MixReale
+  slaves.a.channels 2
+  slaves.b.pcm pcm.MixLoopback
+  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.MixReale {
+  type hw
+  card 0
+  device 0
+}
+
+pcm.MixLoopback {
+  type dmix
+  ipc_key 1025
+  slave {
+    pcm "hw:Loopback,0,0"
+    #rate 48000
+    rate 44100
+    periods 128
+    period_time 0
+    period_size 1024 # must be power of 2
+    buffer_size 8192
+  }
+}