Add EVS control portal, io_mode switching, and DAC-only speaker path

control-portal/app.py

@@ -0,0 +1,60 @@
+import json
+import os
+from typing import Any, Dict
+
+from flask import Flask, jsonify, render_template, request
+import paho.mqtt.client as mqtt
+
+
+MQTT_HOST = os.getenv("MQTT_HOST", "127.0.0.1")
+MQTT_PORT = int(os.getenv("MQTT_PORT", "1883"))
+MQTT_USER = os.getenv("MQTT_USER", "")
+MQTT_PASSWORD = os.getenv("MQTT_PASSWORD", "")
+MQTT_BASE_TOPIC = os.getenv("MQTT_BASE_TOPIC", "evs")
+PORTAL_BIND_HOST = os.getenv("PORTAL_BIND_HOST", "0.0.0.0")
+PORTAL_BIND_PORT = int(os.getenv("PORTAL_BIND_PORT", "8088"))
+
+
+app = Flask(__name__)
+mqtt_client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2, client_id="evs-control-portal")
+if MQTT_USER:
+    mqtt_client.username_pw_set(MQTT_USER, MQTT_PASSWORD)
+mqtt_client.connect(MQTT_HOST, MQTT_PORT, keepalive=30)
+mqtt_client.loop_start()
+
+
+def _topic_for_device(device_id: str) -> str:
+    return f"{MQTT_BASE_TOPIC}/{device_id}/command"
+
+
+def _publish(device_id: str, payload: Dict[str, Any]) -> Dict[str, Any]:
+    topic = _topic_for_device(device_id)
+    encoded = json.dumps(payload, separators=(",", ":"))
+    info = mqtt_client.publish(topic, encoded, qos=0, retain=False)
+    return {
+        "ok": info.rc == mqtt.MQTT_ERR_SUCCESS,
+        "topic": topic,
+        "payload": payload,
+        "mqtt_rc": info.rc,
+    }
+
+
+@app.get("/")
+def index():
+    return render_template("index.html", mqtt_host=MQTT_HOST, mqtt_port=MQTT_PORT, base_topic=MQTT_BASE_TOPIC)
+
+
+@app.post("/api/publish")
+def api_publish():
+    body = request.get_json(force=True, silent=True) or {}
+    device_id = str(body.get("device_id", "")).strip()
+    payload = body.get("payload")
+    if not device_id:
+        return jsonify({"ok": False, "error": "device_id is required"}), 400
+    if not isinstance(payload, dict):
+        return jsonify({"ok": False, "error": "payload must be a JSON object"}), 400
+    return jsonify(_publish(device_id, payload))
+
+
+if __name__ == "__main__":
+    app.run(host=PORTAL_BIND_HOST, port=PORTAL_BIND_PORT, debug=False)