Add script for swapping audio outs

hyprland/.config/waybar/config

@@ -40,7 +40,7 @@
 	"margin-right": 16,
 	"modules-left": ["gamemode", "battery", "temperature", "cpu", "memory", "network"],
 	"modules-center": [],
-	"modules-right": ["mpris", "pulseaudio", "backlight", "idle_inhibitor", "clock"],
+	"modules-right": ["mpris", "pulseaudio", "custom/output-device", "backlight", "idle_inhibitor", "clock"],
 	"clock": {
 		"format": "{:%a %b %d %I:%M %p}",
 		"tooltip": false
@@ -143,5 +143,14 @@
 		"format": "",
 		"tooltip-format": "An rpm-ostree deployment is pending and will be applied upon the next reboot",
 		"exec": "rpm-ostree status --json | jq -e '.deployments[0].staged'"
+	},
+	"custom/output-device": {
+		"interval": 60,
+		"format": "{}",
+		"tooltip-format": "Click to switch between output devices",
+		"exec-on-event": true,
+		"exec": "$HOME/.config/waybar/scripts/output-devices.py --iconify",
+		"on-click": "$HOME/.config/waybar/scripts/output-devices.py --next --iconify",
+		"on-click-right": "$HOME/.config/waybar/scripts/output-devices.py --previous --iconify"
 	}
 }]

hyprland/.config/waybar/scripts/output-devices.py

@@ -0,0 +1,138 @@
+#! /usr/bin/env python3
+import argparse
+import json
+import pprint
+import subprocess
+
+
+def get_sinks():
+    """
+    Consult pactl and get a sorted list of all sinks as dicts
+    """
+    sinks = json.loads(
+        subprocess.run(
+            ["pactl", "-f", "json", "list", "sinks"],
+            capture_output=True,
+            text=True,
+            check=True,
+        ).stdout
+    )
+    return sorted(sinks, key=lambda s: s["index"])
+
+
+def get_status():
+    status = json.loads(
+        subprocess.run(
+            ["pactl", "-f", "json", "info"],
+            capture_output=True,
+            text=True,
+            check=True,
+        ).stdout
+    )
+    return status
+
+
+def change_sink(sink):
+    """
+    Provided a sink object, use pactl to change over to it
+    """
+    assert sink.get("name")
+    return subprocess.run(["pactl", "set-default-sink", sink.get("name")], check=True)
+
+
+def get_current_sink(sinks, status):
+    """
+    Given a list of all sinks and the status of the system, return the dict
+    for the sink that's currently the default output device
+    """
+    return next(
+        (
+            sink
+            for sink in sinks
+            if sink.get("name", "") == status.get("default_sink_name", "")
+        ),
+        None,
+    )
+
+
+def get_offset_sink(sinks, currentsink, offset=1):
+    def find_sink_by_index(sinks, index):
+        for sink in sinks:
+            if sink["index"] == index:
+                return sink
+        return None
+
+    """
+    Given a list of sinks and the current default sink, get some offset in the
+    list of all sinks away from it. Useful for getting next/previous sinks
+    """
+    indexes = [s["index"] for s in sinks]
+    i = indexes.index(currentsink.get("index", 0))
+    next_index = indexes[(i + offset) % len(indexes)]
+    return find_sink_by_index(sinks, next_index)
+
+
+def get_sink_icon(sinks, currentsink):
+    """
+    Given the list of all sinks and the current one, figure out how we should
+    display that as a small icon
+    """
+    icon = {
+        "hdmi": "\uf26c",  # fa-tv
+        "analog": "\uf028",  # fa-volume-up
+        "headphones": "\uf025",  # fa-headphones
+        "bluetooth": "\uf294",  # fa-bluetooth-b
+    }
+
+    def classify(sink):
+        name = sink.get("name", "").lower()
+        port = sink.get("active_port", "")
+        desc = sink.get("description", "").lower()
+        if "hdmi" in name or "hdmi" in desc:
+            return "hdmi"
+        if "headphones" in port or "headset" in desc:
+            return "headphones"
+        if "analog" in name or "lineout" in port:
+            return "analog"
+        if "bluez" in name or "bluetooth" in desc:
+            return "bluetooth"
+        return "analog"
+
+    return icon[classify(currentsink)]
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Display and cycle through PulseAudio and PipeWire sinks"
+    )
+    parser.add_argument(
+        "-i",
+        "--iconify",
+        action="store_true",
+        help="Print an icon instead of the full name of the sink",
+    )
+    parser.add_argument(
+        "-n", "--next", action="store_true", help="Advance to the next sink"
+    )
+    parser.add_argument(
+        "-p", "--previous", action="store_true", help="Advance to the previous sink"
+    )
+    args = parser.parse_args()
+
+    # Get pactl's status
+    sinks = get_sinks()
+    status = get_status()
+    currentsink = get_current_sink(sinks, status)
+    # Figure out our offset into the list
+    offset = 1 if args.next else -1 if args.previous else 0
+    # Figure out where we wanna go
+    newsink = get_offset_sink(sinks, currentsink, offset)
+    change_sink(newsink)
+    if args.iconify:
+        print(get_sink_icon(sinks, newsink))
+    else:
+        print(newsink.get("description"))
+
+
+if __name__ == "__main__":
+    main()

hyprland/.config/waybar/style.css

@@ -222,3 +222,7 @@ window#waybar.fullscreen #window {
 	color: rgba(235, 219, 178, 0.2);
 	padding: 0 1em;
 }
+#custom-output-device {
+	color: #ebdbb2;
+	padding: 0 1em;
+}