Initial commit

Components/Cava.qml

@@ -0,0 +1,68 @@
+import QtQuick
+import Quickshell
+import Quickshell.Io
+import qs.Components
+
+Scope {
+	id: root
+	property int count: 32
+	property int noiseReduction: 60
+	property string channels: "mono" // or stereo
+	property string monoOption: "average" // or left or right
+	property var config: ({
+		general: { bars: count },
+		smoothing: { noise_reduction: noiseReduction },
+		output: {
+			method: "raw",
+			bit_format: 8,
+			channels: channels,
+			mono_option: monoOption,
+		}
+	})
+	property var values: Array(count).fill(0) // 0 <= value <= 1
+
+	onConfigChanged: {
+		process.running = false
+		process.running = true
+	}
+
+	Process {
+		property int index: 0
+		id: process
+		stdinEnabled: true
+		command: ["cava", "-p", "/dev/stdin"]
+		onExited: { stdinEnabled = true; index = 0 }
+		onStarted: {
+			const iniParts = []
+			for (const k in config) {
+				if (typeof config[k] !== "object") {
+					write(k + "=" + config[k] + "\n")
+					continue
+				}
+				write("[" + k + "]\n")
+				const obj = config[k]
+				for (const k2 in obj) {
+					write(k2 + "=" + obj[k2] + "\n")
+				}
+			}
+			stdinEnabled = false
+		}
+		stdout: SplitParser {
+			property var newValues: Array(count).fill(0)
+			splitMarker: ""
+			onRead: data => {
+				if (process.index + data.length > config.general.bars) {
+					process.index = 0
+				}
+				for (let i = 0; i < data.length; i += 1) {
+					newValues[i + process.index] = Math.min(data.charCodeAt(i), 128) / 128
+				}
+				process.index += data.length
+				if (newValues.length !== values.length) {
+					console.log("length!", values.length, newValues.length)
+				}
+				values = newValues
+			}
+		}
+	}
+}