Add rofi audio switcher

python script to easily switch audio sinks/sources with rofi

script originally taken from some github user

home/features/cli/default.nix

@@ -28,6 +28,7 @@
     ipinfo # IP geolocation
     ranger # TUI file manager
     protonup-rs
+    rofi-audio-switcher
 
     mpv # Video player
 

pkgs/default.nix

@@ -5,4 +5,5 @@
   alvr = pkgs.callPackage ./alvr {};
   feishin-appimage = pkgs.callPackage ./feishin {};
   protonup-rs = pkgs.callPackage ./protonup-rs {};
+  rofi-audio-switcher = pkgs.callPackage ./rofi-audio-switcher {};
 }

pkgs/rofi-audio-switcher/default.nix

@@ -0,0 +1,14 @@
+{
+  lib,
+  pkgs,
+  fetchFromGitHub,
+  ...
+}:
+pkgs.stdenv.mkDerivation rec {
+  name = "rofi-audio-switcher";
+  propagatedBuildInputs = [
+    pkgs.python311
+  ];
+  dontUnpack = true;
+  installPhase = "install -Dm755 ${./wireplumber_audio_switcher.py} $out/bin/rofi-audio-switcher";
+}

pkgs/rofi-audio-switcher/wireplumber_audio_switcher.py

@@ -0,0 +1,87 @@
+#!/usr/bin/python3
+import sys
+import subprocess
+
+"""
+Wireplumber sink/source switcher
+
+It lets you pass your sinks/sources into a dmenu dropdown
+for ease of access
+
+Usage:
+./wireplumber_audio_switcher.py <Sinks|Sources>
+"""
+
+GROUP_DELIMITER = " ├─"
+ITEM_DELIMITER = " │  "
+ACCEPTED_GROUPS = set(["Sinks:", "Sources:"])
+
+
+def clean_line(line: str):
+    line = (
+        line.replace(GROUP_DELIMITER, "").replace(ITEM_DELIMITER, "").replace(":", "")
+    )
+    vol_index = line.find("[")
+    if vol_index > 0:
+        line = line[:vol_index]
+    if "*" in line:
+        line = line.replace("*", "")
+        splitted = line.split(".")
+        splitted[1] = f"<b>{splitted[1].strip()} *</b>"
+        line = ". ".join(splitted)
+    return line.strip()
+
+
+def parse_wpctl_status():
+    found_audio_tab = False
+    current_subgroup = None
+    processed_data = {}
+    output = subprocess.run(
+        "wpctl status -k",
+        shell=True,
+        encoding="utf-8",
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+    )
+
+    for line in output.stdout.split("\n"):
+        if not found_audio_tab and line == "Audio":
+            found_audio_tab = True
+
+        elif found_audio_tab:
+            if line == "":
+                found_audio_tab = False
+                break
+            elif line == ITEM_DELIMITER:
+                current_subgroup = None
+                continue
+            elif line.startswith(GROUP_DELIMITER):
+                current_subgroup = clean_line(line)
+                processed_data[current_subgroup] = []
+                continue
+            elif current_subgroup and line.startswith(ITEM_DELIMITER):
+                processed_data[current_subgroup].append(clean_line(line))
+                continue
+    return processed_data
+
+
+def pipe_into_dmenu(output):
+    output = subprocess.run(
+        f"echo '{output}' | rofi -dmenu -markup-rows",
+        shell=True,
+        encoding="utf-8",
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+    )
+
+    if output.returncode != 0:
+        return None
+    return output.stdout
+
+
+output = parse_wpctl_status()
+sink = pipe_into_dmenu("\n".join(output[sys.argv[1]]))
+
+if sink:
+    sink_id = sink.split(".")[0]
+    subprocess.run(f"wpctl set-default {sink_id}", shell=True)