fd0 · July 19, 2015 09:44 · Jul 19, 2015
diff --git a/asound.conf b/asound.conf
@@ -0,0 +1,246 @@
+# ~/.asoundrc or /etc/asound.conf
+# ALSA configuration file
+
+##### USAGE #####
+# Save this file as "~/.asoundrc" (for user-specific sound configuration) or
+# "/etc/asound.conf" (for system-wide sound configuration) and specify ALSA
+# device names ad described in the next section.
+
+
+##### DEVICE NAMES #####
+# This configuration file defines four devices for use by the user.  Those
+# devices are "analog", "mixed-analog", "digital", and "mixed-digital".  The
+# user may also re-define "default" to be identical to one of the above-named
+# devices (i.e. to send all sound output to the digital output unless otherwise
+# specified).  Use the device names as described below:
+#  - "analog" outputs to the analog output directly and (at least on software
+#  sound cards) blocks other audio output.  After playback completes, "queued"
+#  sounds are output in sequence.
+#  - "mixed-analog" mixes audio output from multiple programs into the analog
+#  output (so you can hear beeps, alerts, and other noises while playing back
+#  an audio stream).
+#  - "digital" outputs to the digital output directly.  Since most (all?)
+#  digital outputs expect 48kHz PCM audio, this may not work for some playback
+#  (i.e. CD's--which are 44.1kHz PCM audio--or 32kHz audio streams from TV
+#  recordings, etc.).
+#  - "mixed-digital"
+
+# All other devices created within this file are used only by the configuration
+# file itself and should /not/ be used directly.  In other words, do not use
+# the devices "analog-hw", "dmix-analog", "digital-hw", or "dmix-digital".
+
+
+##### IMPORTANT #####
+# To make this ALSA configuration file work with your sound card, you will need
+# to define the appropriate card and device information for the "analog-hw" and
+# "digital-hw" devices below.  You can find the card and device information
+# using "aplay -l".
+
+# Alias for (converted) analog output on the card
+# - This is identical to the device named "default"--which always exists and
+# refers to hw:0,0 (unless overridden)
+# - Therefore, we can specify "hw:0,0", "default", or "analog" to access analog
+# output on the card
+# - Note that as of ALSA 1.0.9, "software" sound card definitions redefine
+# "default" to do mixing, meaning this device is different from "default" and
+# allows playback while blocking other sound sources (until playback
+# completes).
+pcm.analog {
+    type plug
+        slave.pcm "analog-hw"
+        hint {
+            show on
+                description "Analog Output - Use analog outputs, converting samples, format, and rate as necessary."
+        }
+}
+
+# Control device (mixer, etc.) for the card
+ctl.analog {
+    type hw
+        card 0
+}
+
+# Alias for (converted) mixed analog output on the card
+# - This will accept audio input--regardless of rate--and convert to the rate
+# required for the dmix plugin (in this case 48000Hz)
+# - Note that as of ALSA 1.0.9, "software" sound card definitions redefine
+# "default" to do mixing, meaning this device is identical to "default" for
+# "software" sound cards.
+pcm.mixed-analog {
+    type plug
+        slave.pcm "dmix-analog"
+        hint {
+            show on
+                description "Mixed Analog Output - Use analog outputs, converting samples, format, and rate as necessary. Allows mixing with system sounds."
+        }
+}
+
+# Control device (mixer, etc.) for the card
+ctl.mixed-analog {
+    type hw
+        card 0
+}
+
+# Alias for (converted) digital (HDMI) output on the card
+pcm.digital {
+    type plug
+        slave.pcm "digital-hw"
+        hint {
+            show on
+                description "Digital Output - Use digital outputs, converting samples, format, and rate as necessary."
+        }
+}
+
+# Control device (mixer, etc.) for the card
+ctl.digital {
+    type hw
+        card 0
+}
+
+# Alias for mixed (converted) digital (HDMI) output on the card
+
+pcm.mixed-digital {
+    type plug
+        slave.pcm "dmix-digital"
+        hint {
+            show on
+                description "Mixed Digital Output - Use digital outputs, converting samples, format, and rate as necessary. Allows mixing with system sounds."
+        }
+}
+
+# Control device (mixer, etc.) for the card
+ctl.mixed-digital {
+    type hw
+        card 0
+}
+
+# The following devices are not useful by themselves.  They require specific
+# rates, channels, and formats.  Therefore, you probably do not want to use
+# them directly.  Instead use of of the devices defined above.
+
+# Alias for analog output on the card
+# Do not use this directly--it requires specific rate, channels, and format
+pcm.analog-hw {
+    type hw
+        card 0
+        device 0
+}
+
+# Control device (mixer, etc.) for the card
+ctl.analog-hw {
+    type hw
+        card 0
+}
+
+# Alias for digital (HDMI) output on the card
+# Do not use this directly--it requires specific rate, channels, and format
+pcm.digital-hw {
+    type hw
+        card 0
+        device 1
+}
+
+# Control device (mixer, etc.) for the card
+ctl.digital-hw {
+    type hw
+        card 0
+}
+
+# Direct software mixing plugin for analog output on the card
+# Do not use this directly--it requires specific rate, channels, and format
+pcm.dmix-analog {
+    type dmix
+        ipc_key 1234
+        slave {
+            pcm "analog-hw"
+                period_time 0
+                period_size 1024
+                buffer_size 4096
+                rate 48000
+        }
+}
+
+# Control device (mixer, etc.) for the card
+ctl.dmix-analog {
+    type hw
+        card 0
+}
+
+# Direct software mixing plugin for digital (S/PDIF) output on the card
+# Do not use this directly--it requires specific rate, channels, and format
+pcm.dmix-digital {
+    type dmix
+        ipc_key 1235
+        slave {
+            pcm "digital-hw"
+                period_time 0
+                period_size 1024
+                buffer_size 4096
+                rate 48000
+        }
+}
+
+# Control device (mixer, etc.) for the card
+ctl.dmix-digital {
+    type hw
+        card 0
+}
+
+# Make joint analog/HDMI the default
+pcm.!default {
+    type plug
+        slave {
+            pcm multi
+                rate 48000
+        }
+    ttable.0.0 1.0
+        ttable.1.1 1.0
+        ttable.0.2 1.0
+        ttable.1.3 1.0
+}
+
+# Control device (mixer, etc.) for the card
+ctl.!default {
+    type hw
+        card 0
+}
+
+pcm.xbmc {
+    type plug
+        slave {
+            pcm multi
+                rate 48000
+                channels 4
+        }
+    ttable.0.0 1.0
+        ttable.1.1 1.0
+        ttable.0.2 1.0
+        ttable.1.3 1.0
+}
+
+
+ctl.xbmc {
+    type hw
+        card 0
+}
+
+pcm.multi {
+    type multi
+        slaves.a.pcm "analog-hw"
+        slaves.a.channels 2
+        slaves.b.pcm "digital-hw"
+        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
+}
+
+ctl.multi {
+    type hw
+        card 0
+}