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PipeWire and PulseAudio channel remapping for Focusrite 18i20 gen3
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| # <other parts of the configuration removed> | |
| # Remapping Focusrite IO for separate use | |
| # Inputs | |
| # https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#module-remap-source | |
| load-module module-remap-source source_name=18i20-in-1 source_properties="device.description='18i20 Input 1'" master=alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.multichannel-input remix=no channels=1 master_channel_map=front-left channel_map=mono | |
| load-module module-remap-source source_name=18i20-in-2 source_properties="device.description='18i20 Input 2'" master=alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.multichannel-input remix=no channels=1 master_channel_map=front-right channel_map=mono | |
| load-module module-remap-source source_name=18i20-in-3 source_properties="device.description='18i20 Input 3'" master=alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.multichannel-input remix=no channels=1 master_channel_map=rear-left channel_map=mono | |
| load-module module-remap-source source_name=18i20-in-4 source_properties="device.description='18i20 Input 4'" master=alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.multichannel-input remix=no channels=1 master_channel_map=rear-right channel_map=mono | |
| load-module module-remap-source source_name=18i20-in-5 source_properties="device.description='18i20 Input 5'" master=alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.multichannel-input remix=no channels=1 master_channel_map=front-center channel_map=mono | |
| load-module module-remap-source source_name=18i20-in-6 source_properties="device.description='18i20 Input 6'" master=alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.multichannel-input remix=no channels=1 master_channel_map=lfe channel_map=mono | |
| load-module module-remap-source source_name=18i20-in-7 source_properties="device.description='18i20 Input 7'" master=alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.multichannel-input remix=no channels=1 master_channel_map=side-left channel_map=mono | |
| load-module module-remap-source source_name=18i20-in-8 source_properties="device.description='18i20 Input 8'" master=alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.multichannel-input remix=no channels=1 master_channel_map=side-right channel_map=mono | |
| # Outputs | |
| # https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#module-remap-sink | |
| load-module module-remap-sink master=alsa_output.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.multichannel-output sink_name=18i20-Output-1 sink_properties="device.description='18i20 Output 1 (1-2)'" remix=no channels=2 channel_map=front-left,front-right | |
| load-module module-remap-sink master=alsa_output.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.multichannel-output sink_name=18i20-Output-2 sink_properties="device.description='18i20 Output 2 (3-4)'" remix=no channels=2 channel_map=rear-left,rear-right |
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| context.modules = [ | |
| # Analog Input 1 | |
| { name = libpipewire-module-loopback | |
| args = { | |
| node.description = "18i20 Input 01" | |
| capture.props = { | |
| node.name = "capture.18i20_in_01" | |
| audio.position = [ AUX0 ] | |
| stream.dont-remix = true | |
| target.object = "alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.pro-input-0" | |
| node.passive = true | |
| } | |
| playback.props = { | |
| node.name = "18i20_in_01" | |
| media.class = "Audio/Source" | |
| audio.position = [ MONO ] | |
| } | |
| } | |
| } | |
| # Analog Input 2 | |
| { name = libpipewire-module-loopback | |
| args = { | |
| node.description = "18i20 Input 02" | |
| capture.props = { | |
| node.name = "capture.18i20_in_02" | |
| audio.position = [ AUX1 ] | |
| stream.dont-remix = true | |
| target.object = "alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.pro-input-0" | |
| node.passive = true | |
| } | |
| playback.props = { | |
| node.name = "18i20_in_02" | |
| media.class = "Audio/Source" | |
| audio.position = [ MONO ] | |
| } | |
| } | |
| } | |
| # Analog Input 3 | |
| { name = libpipewire-module-loopback | |
| args = { | |
| node.description = "18i20 Input 03" | |
| capture.props = { | |
| node.name = "capture.18i20_in_03" | |
| audio.position = [ AUX2 ] | |
| stream.dont-remix = true | |
| target.object = "alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.pro-input-0" | |
| node.passive = true | |
| } | |
| playback.props = { | |
| node.name = "18i20_in_03" | |
| media.class = "Audio/Source" | |
| audio.position = [ MONO ] | |
| } | |
| } | |
| } | |
| # Analog Input 4 | |
| { name = libpipewire-module-loopback | |
| args = { | |
| node.description = "18i20 Input 04" | |
| capture.props = { | |
| node.name = "capture.18i20_in_04" | |
| audio.position = [ AUX3 ] | |
| stream.dont-remix = true | |
| target.object = "alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.pro-input-0" | |
| node.passive = true | |
| } | |
| playback.props = { | |
| node.name = "18i20_in_04" | |
| media.class = "Audio/Source" | |
| audio.position = [ MONO ] | |
| } | |
| } | |
| } | |
| # Analog Input 5 | |
| { name = libpipewire-module-loopback | |
| args = { | |
| node.description = "18i20 Input 05" | |
| capture.props = { | |
| node.name = "capture.18i20_in_05" | |
| audio.position = [ AUX4 ] | |
| stream.dont-remix = true | |
| target.object = "alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.pro-input-0" | |
| node.passive = true | |
| } | |
| playback.props = { | |
| node.name = "18i20_in_05" | |
| media.class = "Audio/Source" | |
| audio.position = [ MONO ] | |
| } | |
| } | |
| } | |
| # Analog Input 6 | |
| { name = libpipewire-module-loopback | |
| args = { | |
| node.description = "18i20 Input 06" | |
| capture.props = { | |
| node.name = "capture.18i20_in_06" | |
| audio.position = [ AUX5 ] | |
| stream.dont-remix = true | |
| target.object = "alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.pro-input-0" | |
| node.passive = true | |
| } | |
| playback.props = { | |
| node.name = "18i20_in_06" | |
| media.class = "Audio/Source" | |
| audio.position = [ MONO ] | |
| } | |
| } | |
| } | |
| # Analog Input 7 | |
| { name = libpipewire-module-loopback | |
| args = { | |
| node.description = "18i20 Input 07" | |
| capture.props = { | |
| node.name = "capture.18i20_in_07" | |
| audio.position = [ AUX6 ] | |
| stream.dont-remix = true | |
| target.object = "alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.pro-input-0" | |
| node.passive = true | |
| } | |
| playback.props = { | |
| node.name = "18i20_in_07" | |
| media.class = "Audio/Source" | |
| audio.position = [ MONO ] | |
| } | |
| } | |
| } | |
| # Analog Input 8 | |
| { name = libpipewire-module-loopback | |
| args = { | |
| node.description = "18i20 Input 08" | |
| capture.props = { | |
| node.name = "capture.18i20_in_08" | |
| audio.position = [ AUX7 ] | |
| stream.dont-remix = true | |
| target.object = "alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.pro-input-0" | |
| node.passive = true | |
| } | |
| playback.props = { | |
| node.name = "18i20_in_08" | |
| media.class = "Audio/Source" | |
| audio.position = [ MONO ] | |
| } | |
| } | |
| } | |
| # Loopback (stereo) | |
| { name = libpipewire-module-loopback | |
| args = { | |
| node.description = "18i20 Loopback" | |
| capture.props = { | |
| node.name = "capture.18i20_in_loopback" | |
| audio.position = [ AUX8 AUX9 ] | |
| stream.dont-remix = true | |
| target.object = "alsa_input.usb-Focusrite_Scarlett_18i20_USB_P92XEEZ9A04D41-00.pro-input-0" | |
| node.passive = true | |
| } | |
| playback.props = { | |
| node.name = "18i20_in_loopback" | |
| media.class = "Audio/Source" | |
| audio.position = [ FL FR ] | |
| } | |
| } | |
| } | |
| ] |
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HOWTO
What is what
00-focusrite-scarlett-18i20gen3-remap.pais my old configuration for PulseAudio. Could be placed in PulseAudio configuration directory (/etc/pulse/default.pa.d/for system-wide configuration).00-scarlett18i20gen3-inputs.confis my new configuration for PipeWire. Could be placed in PipeWire configuration directory (for example~/.config/pipewire/pipewire.conf.dfor per-user configuration or/etc/pipewire/pipewire.conf.d/for system-wide).Obtaining
master, sinks and sourcesPulseAudio
Use
pacmd list-sourcesandpacmd list-sinksto obtainmastername, sources and sinks.PipeWire
Use
pw-link -o,pw-link -i, etc.More info