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#!/bin/sh
pw-dump --monitor | jq -r --unbuffered '
.[]
| select(
.type? == "PipeWire:Interface:Node"
and (.info?."change-mask"? | any(. == "params"))
and .info?.props."media.class" == "Audio/Sink"
and .info?.params.Props != null
)
| .info.params.Props
| .[]
| select(.channelVolumes != null)
| .channelVolumes[0]
' | while read -r v; do
printf '%.0f\n' "$(printf 'e(l(%f)/3)*100\n' "$v" | bc -l 2>/dev/null)" 2>/dev/null || true
done
|
