Add speaker used module

Author: bkbilly

lnxlink/modules/speaker_used.py

@@ -0,0 +1,50 @@
+"""Checks if the Speaker is used"""
+import glob
+import json
+import re
+from .scripts.helpers import syscommand
+
+
+class Addon:
+    """Addon module"""
+
+    def __init__(self, lnxlink):
+        """Setup addon"""
+        self.name = "Speaker used"
+        self.lnxlink = lnxlink
+
+        _, _, returncode = syscommand(
+            "which pactl && pactl -f json list short sink-inputs", ignore_errors=True
+        )
+        self.use_pactl = False
+        if returncode == 0:
+            self.use_pactl = True
+
+    def get_info(self):
+        """Gather information from the system"""
+        if self.use_pactl:
+            stdout, _, _ = syscommand(
+                "pactl -f json list short sink-inputs",
+            )
+            # Replace 0,00 values with 0.00
+            stdout = re.sub(r"(\s*[+-]?[0-9]+),([0-9]+\s*)", r"\1.\2", stdout)
+            data = json.loads(stdout)
+            if len(data) > 0:
+                return "ON"
+            return "OFF"
+        speakers = glob.glob("/proc/asound/card*/pcm*/sub*/status", recursive=True)
+        for speaker in speakers:
+            with open(speaker, encoding="UTF-8") as speaker_content:
+                speaker_status = speaker_content.read().strip().lower()
+                if speaker_status != "closed":
+                    return "ON"
+        return "OFF"
+
+    def exposed_controls(self):
+        """Exposes to home assistant"""
+        return {
+            "Speaker used": {
+                "type": "binary_sensor",
+                "icon": "mdi:speaker",
+            },
+        }