# A sink that converts mono sources such as C64 SID or Amiga Tracker (rendered in mono)
# music to stereo using the MDA Stereo plugin.
#
# Make sure the sound is rendered in mono (e.g. openmpt123 --stereo 0 4ch_tracker.mod)
#
# Required software: MDA Stereo lv2 Plugin (Gentoo: media-plugins/mda-lv2 Debian, Ubuntu: mda-lv2 Arch: mda.lv2)
#
# Copy this file into a conf.d/ directory such as                                                                                     ▐
# ~/.config/pipewire/filter-chain.conf.d/
#
# To tweak the MDA Stereo controls while it's running without restarts:
#
#   Get id:
#   $ pw-dump | jq -r ".[] | select (.info.props.\"node.name\" == \"effect_input.stereo_imager\") | .id"
#   Change control value:
#   $ pw-cli s <id> Props '{ params = [ "mda_stereo:<control_option>" <value> ] }'
#   Print current values:
#   $ pw-dump | jq -r ".[].info | select (.props.\"node.name\" == \"effect_input.stereo_imager\") | .params.Props.[].params.[]" | sed -n '/^mda_stereo:/N;s/\n/ = /p'
#
#

context.modules = [
	{ name = libpipewire-module-filter-chain
		flags = [ nofail ]
		args = {
			node.description = "Stereo Imager Sink"
			media.name       = "Stereo Imager Sink"
			audio.channels = 2
			audio.position= [ FL FR ]
			filter.graph = {
				nodes = [
					{
						type = lv2
						name = mda_stereo
						plugin = "http://drobilla.net/plugins/mda/Stereo"
						label = mda_stereo
						control = {
							"width" = 0.78
							"delay" = 0.43
							"balance" = 0.5
							"mod" = 0.0
							"rate" = 0.5
						}
					}
				]
			}
			capture.props = {
				node.name = "effect_input.stereo_imager"
				media.class = Audio/Sink
			}
			playback.props = {
				node.name = "effect_output.stereo_imager"
				node.passive = true
			}
		}
	}
]