WebCam als schlanke alternative zum appVideoControl

2026-06-02 22:19:08 +02:00
commit 9b1ae2ae14
11 changed files with 842 additions and 0 deletions
--- a/server.js
+++ b/server.js
@@ -0,0 +1,85 @@
+'use strict';
+
+const express = require('express');
+const http = require('http');
+const { WebSocketServer } = require('ws');
+const path = require('path');
+const { detectDevices } = require('./src/deviceDetect');
+const { VideoStream } = require('./src/videoStream');
+const { createSnapshotRouter } = require('./src/snapshotService');
+
+const PORT = parseInt(process.env.PORT ?? '8080', 10);
+
+function buildStreams() {
+  const devices = detectDevices();
+  console.log(`Detected ${devices.length} camera(s):`, devices);
+
+  return devices.map((device, idx) => new VideoStream(device, {
+    name: `cam${idx}`,
+    width:   parseInt(process.env[`CAM${idx}_WIDTH`]   ?? '640',  10),
+    height:  parseInt(process.env[`CAM${idx}_HEIGHT`]  ?? '480',  10),
+    fps:     parseInt(process.env[`CAM${idx}_FPS`]     ?? '30',   10),
+    quality: parseInt(process.env[`CAM${idx}_QUALITY`] ?? '5',    10),
+  }));
+}
+
+function main() {
+  const streams = buildStreams();
+
+  // Start all streams eagerly – first client gets immediate frame
+  streams.forEach(s => s.start());
+
+  const app = express();
+
+  app.use(express.static(path.join(__dirname, 'public')));
+  app.use('/api/snapshot', createSnapshotRouter(streams));
+
+  app.get('/health', (_req, res) => {
+    res.json({
+      status: 'ok',
+      cameras: streams.map((s, i) => ({
+        id: `cam${i}`,
+        device: s.device,
+        running: s.isRunning,
+        clients: s.clientCount,
+        hasFrame: s.latestFrame !== null,
+      })),
+    });
+  });
+
+  const server = http.createServer(app);
+  const wss = new WebSocketServer({ noServer: true });
+
+  server.on('upgrade', (req, socket, head) => {
+    const match = req.url?.match(/^\/ws\/cam(\d+)$/);
+    if (!match) { socket.destroy(); return; }
+
+    const idx = parseInt(match[1], 10);
+    if (!streams[idx]) { socket.destroy(); return; }
+
+    wss.handleUpgrade(req, socket, head, (ws) => {
+      const stream = streams[idx];
+      stream.addClient(ws);
+      ws.on('close', () => stream.removeClient(ws));
+      ws.on('error', () => stream.removeClient(ws));
+    });
+  });
+
+  server.listen(PORT, '0.0.0.0', () => {
+    console.log(`AppRobotWebcam on http://0.0.0.0:${PORT}`);
+    streams.forEach((s, i) => {
+      console.log(`  ws://0.0.0.0:${PORT}/ws/cam${i}  →  ${s.device}`);
+      console.log(`  http://0.0.0.0:${PORT}/api/snapshot/cam${i}`);
+    });
+  });
+
+  const shutdown = (signal) => {
+    console.log(`\n${signal} received – shutting down`);
+    streams.forEach(s => s.stop());
+    server.close(() => process.exit(0));
+  };
+  process.on('SIGINT',  () => shutdown('SIGINT'));
+  process.on('SIGTERM', () => shutdown('SIGTERM'));
+}
+
+main();