517 lines
20 KiB
JavaScript
517 lines
20 KiB
JavaScript
'use strict';
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// go2rtc Player-Modi.
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// 'mjpeg' → Passthrough: go2rtc reicht Kamera-MJPEG 1:1 durch.
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// KEIN Transcode → ~0% CPU, keine Freezes, ~200ms Latenz.
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// 'webrtc,mse,mjpeg' → WebRTC bevorzugt. ABER: WebRTC/MSE können kein MJPEG →
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// go2rtc transcodiert MJPEG→H.264 in Software (libx264) →
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// ~55% CPU pro Kamera + Keyframe-Freezes. ~130ms Latenz.
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const MODE = 'mjpeg';
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const IS_MJPEG = !MODE.includes('webrtc'); // MJPEG-Modus: kein WebRTC/getStats/Health
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// ── Überwachungs-Parameter ───────────────────────────────────────────────────
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const MONITOR_INTERVAL = 2500; // ms zwischen Health-Checks (getStats)
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const CONNECT_GRACE_MS = 25000; // so lange darf der Verbindungsaufbau dauern (kein Alarm)
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const WARMUP_MS = 15000; // Karenz nach 'playing', bis Überlast-Erkennung scharf wird
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const OVERLOAD_TICKS = 3; // so viele kritische Checks in Folge → Auto-Abschaltung
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// Schwellen (auf Basis der ZUVERLÄSSIGEN getStats-Werte, nicht Render-Drops):
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const SERVER_LOW_FPS = 12; // recv < 12/s nach Aufwärmen → Server liefert wenig (nur Warnung)
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const CLIENT_DECODE_RATIO = 0.6; // decoded < 60% von recv → Decoder kommt nicht nach (echte Client-Überlast)
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const NET_LOST_PER_TICK = 5; // mehr verlorene Pakete/Intervall → Netz-Warnung
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const NET_JITTER_MS = 60; // mehr Jitter → Netz-Warnung
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// ── Logging (Browser DevTools → Console → F12) ───────────────────────────────
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const P = '[WebcamViewer]';
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const log = (c, m) => console.log(`${P}[${c}] ${m}`);
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const warn = (c, m) => console.warn(`${P}[${c}] ⚠ ${m}`);
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const logErr = (c, m, e) => console.error(`${P}[${c}] ✗ ${m}`, e ?? '');
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const sleep = ms => new Promise(r => setTimeout(r, ms));
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let GO2RTC_PORT = 1984;
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const cameras = []; // { id, box, infoEl, toggleBtn, active, startedAt, playingSince, statsLast, badTicks, autoOff }
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// ── Stream starten / stoppen ─────────────────────────────────────────────────
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function startStream(cam) {
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if (cam.box.querySelector('video-stream')) return;
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const wsUrl = `ws://${location.hostname}:${GO2RTC_PORT}/api/ws?src=${encodeURIComponent(cam.id)}`;
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log(cam.id, `Verbinde → ${wsUrl}`);
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cam.active = true;
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cam.startedAt = performance.now();
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cam.playingSince = null; // wird erst beim 'playing'-Event gesetzt
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cam.statsLast = null;
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cam.badTicks = 0;
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const stream = document.createElement('video-stream');
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stream.mode = MODE;
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stream.addEventListener('playing', () => {
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cam.playingSince = performance.now();
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cam.statsLast = null;
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cam.badTicks = 0;
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log(cam.id, '▶ Bild läuft (Aufwärmphase startet)');
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}, true);
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stream.addEventListener('error', (e) => logErr(cam.id, 'Video-Fehler', e), true);
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stream.src = wsUrl;
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cam.box.insertBefore(stream, cam.box.firstChild);
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cam.toggleBtn.textContent = '⏸';
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cam.toggleBtn.title = 'Stream ausschalten';
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setInfo(cam, 'verbindet…', '');
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}
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function stopStream(cam, auto = false) {
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const el = cam.box.querySelector('video-stream');
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if (el) el.remove();
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cam.active = false;
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cam.autoOff = auto;
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cam.playingSince = null;
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cam.toggleBtn.textContent = '▶';
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cam.toggleBtn.title = 'Stream einschalten';
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setInfo(cam, auto ? 'auto-aus (Client überlastet)' : 'aus', auto ? 'crit' : '');
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log(cam.id, auto ? 'AUTO-abgeschaltet (Decoder kam nicht nach)' : 'manuell aus');
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if (auto) showNotice();
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}
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// ── Hi-Res Canvas-Freeze + Grab (Phase 2) ───────────────────────────────────
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// Holt letzten 640er-Frame von /api/snapshot und zeichnet ihn auf canvas.
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// Robuster als drawImage(video-stream): go2rtc MJPEG-Modus hat kein <video>-Element.
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async function showFreezeCanvas(cam, badgeText = 'Capturing HD…') {
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removeFreezeCanvas(cam);
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const W = 640, H = 480;
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const canvas = document.createElement('canvas');
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canvas.className = 'cam-freeze';
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canvas.width = W;
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canvas.height = H;
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const ctx = canvas.getContext('2d');
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ctx.fillStyle = '#111';
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ctx.fillRect(0, 0, W, H);
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try {
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const r = await fetch(`/api/snapshot/${encodeURIComponent(cam.id)}`, { cache: 'no-store' });
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if (r.ok) {
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const url = URL.createObjectURL(await r.blob());
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await new Promise(resolve => {
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const img = new Image();
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img.onload = () => { ctx.drawImage(img, 0, 0, W, H); URL.revokeObjectURL(url); resolve(); };
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img.onerror = () => { URL.revokeObjectURL(url); resolve(); };
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img.src = url;
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});
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}
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} catch (e) { logErr(cam.id, 'Freeze-Frame holen', e); }
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drawBadge(ctx, W, H, badgeText, '#8cf');
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cam.box.insertBefore(canvas, cam.box.firstChild);
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cam.freezeCanvas = canvas;
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}
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function removeFreezeCanvas(cam) {
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if (cam.freezeCanvas) { cam.freezeCanvas.remove(); cam.freezeCanvas = null; }
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}
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function drawBadge(ctx, W, H, text, color = '#8cf') {
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const bw = W * 0.38, bh = 34, m = 12;
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const bx = W - bw - m, by = H - bh - m;
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ctx.fillStyle = 'rgba(0,0,0,.75)';
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ctx.fillRect(bx, by, bw, bh);
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ctx.fillStyle = color;
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ctx.font = '13px monospace';
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ctx.textAlign = 'center';
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ctx.textBaseline = 'middle';
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ctx.fillText(text, bx + bw / 2, by + bh / 2);
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}
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function updateBadge(cam, text, color) {
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if (!cam.freezeCanvas) return;
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drawBadge(cam.freezeCanvas.getContext('2d'), 640, 480, text, color);
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}
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// ── Phase 2: Hi-Res-Grab ─────────────────────────────────────────────────────
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// Ablauf (doc/05_screenShot_roadmap.md, Phase 2):
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// 1. Live-Frame einfrieren + cam loslassen (Consumer → 0)
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// 2. Server wartet auf Freigabe (cam0 Producer stoppt), greift dann cam0_hires
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// 3. HD-JPEG im Canvas zeigen + Download auslösen
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// 4. finally: immer zurück auf Live (cam0 bleibt unberührt → sauberer Reconnect)
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async function runHiresGrab(cam) {
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if (cam.testing) return;
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cam.testing = true;
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cam.hdBtn.disabled = true;
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log(cam.id, '── HD-Grab gestartet ──');
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let blobUrl = null;
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try {
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// 1. Freeze-Frame zeigen (echter 640er-Frame, kein grauer Kasten)
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await showFreezeCanvas(cam, 'Capturing HD…');
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stopStream(cam);
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setInfo(cam, 'HD: warte auf Freigabe…', 'warn');
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// 2. HD-Grab – Server pollt Freigabe, holt dann cam_hires-Frame.
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// Client-Timeout (20s) > Server-Maximum (~12s: 8s Warten + 4×0.8s Retries)
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const r = await fetch(
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`/api/snapshot/${encodeURIComponent(cam.id)}/hires`,
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{ signal: AbortSignal.timeout(20000) }
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);
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if (!r.ok) {
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const body = await r.json().catch(() => ({}));
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throw new Error(body.error ?? `HTTP ${r.status}`);
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}
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const blob = await r.blob();
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blobUrl = URL.createObjectURL(blob);
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// 3a. HD-Frame im Canvas zeigen (skaliert auf 640px, volle Qualität)
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if (cam.freezeCanvas) {
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const ctx = cam.freezeCanvas.getContext('2d');
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await new Promise(resolve => {
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const img = new Image();
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img.onload = () => { ctx.drawImage(img, 0, 0, 640, 480); resolve(); };
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img.onerror = resolve;
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img.src = blobUrl;
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});
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updateBadge(cam, 'HD ✓ speichere…', '#8f8');
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}
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// 3b. Download auslösen
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const a = document.createElement('a');
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a.href = blobUrl;
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a.download = `${cam.id}_hires_${Date.now()}.jpg`;
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document.body.appendChild(a);
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a.click();
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a.remove();
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setInfo(cam, 'HD gespeichert', 'ok');
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log(cam.id, `HD-Grab OK – ${blob.size} bytes`);
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} catch (e) {
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logErr(cam.id, 'HD-Grab fehlgeschlagen', e);
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setInfo(cam, `HD Fehler: ${e.message}`, 'crit');
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} finally {
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// 4. Immer: kurz warten (go2rtc cam_hires freigeben), dann Live zurück
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await sleep(600);
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removeFreezeCanvas(cam);
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if (blobUrl) { URL.revokeObjectURL(blobUrl); blobUrl = null; }
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startStream(cam);
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cam.testing = false;
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cam.hdBtn.disabled = false;
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log(cam.id, '── HD-Grab beendet, zurück auf Live ──');
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}
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}
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// ── Phase-1-Diagnose-Tool (nicht mehr im UI, für Console-Aufruf) ─────────────
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async function runReleaseTest(cam) {
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if (cam.testing) return;
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cam.testing = true;
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cam.hdBtn.disabled = true;
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log(cam.id, '── Release-Test (Phase 1 Diagnose) gestartet ──');
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await showFreezeCanvas(cam, 'Release-Test…');
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stopStream(cam);
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setInfo(cam, 'Release-Test…', 'warn');
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try {
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const r = await fetch(`/api/snapshot/${encodeURIComponent(cam.id)}/release-test`,
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{ signal: AbortSignal.timeout(15000) });
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const data = await r.json();
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console.log(`${P}[${cam.id}] release-test JSON:`, data);
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if (data.freed) {
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log(cam.id, `✓ frei nach ${data.msUntilFree}ms`);
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setInfo(cam, `frei nach ${data.msUntilFree}ms`, 'ok');
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} else {
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warn(cam.id, 'freed=false');
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setInfo(cam, 'nicht freigegeben', 'crit');
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}
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} catch (e) {
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logErr(cam.id, 'release-test', e);
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setInfo(cam, 'Release-Test Fehler', 'crit');
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} finally {
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removeFreezeCanvas(cam);
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startStream(cam);
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cam.testing = false;
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cam.hdBtn.disabled = false;
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log(cam.id, '── Release-Test beendet ──');
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}
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}
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// ── Health-Anzeige ───────────────────────────────────────────────────────────
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function setInfo(cam, text, cls) {
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cam.infoEl.textContent = text;
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cam.infoEl.className = 'cam-info ' + (cls ?? '');
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}
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function showConnecting(cam) {
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const secs = Math.round((performance.now() - cam.startedAt) / 1000);
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setInfo(cam, secs < CONNECT_GRACE_MS / 1000 ? `verbindet… ${secs}s` : 'kein Signal',
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secs < CONNECT_GRACE_MS / 1000 ? '' : 'crit');
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}
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// ── Monitor: liest getStats (inbound-rtp) = die verlässliche Wahrheit ─────────
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// recv = Frames über Netz → niedrig = Server liefert nicht (Encode-CPU)
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// decoded = davon dekodiert → deutlich < recv = Client-Decoder überlastet
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// lost/jitter → Netz/WiFi
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async function monitor() {
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const now = performance.now();
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for (const cam of cameras) {
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if (!cam.active) continue;
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// MJPEG-Passthrough: kein PeerConnection, kein getStats, keine Decoder-Überlast.
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// Das Bild läuft, sobald das Element da ist – nur simple Status-Anzeige.
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if (IS_MJPEG) {
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const live = !!cam.box.querySelector('video-stream');
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setInfo(cam, live ? 'MJPEG · live' : 'aus', live ? 'ok' : '');
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continue;
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}
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const el = cam.box.querySelector('video-stream');
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const pc = el && el.pc;
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// Noch nicht verbunden oder 'playing' noch nicht gefeuert → Aufbauphase
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if (!pc || typeof pc.getStats !== 'function' || cam.playingSince === null) {
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showConnecting(cam);
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continue;
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}
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let stats;
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try { stats = await pc.getStats(); } catch { continue; }
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let v = null;
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stats.forEach(r => { if (r.type === 'inbound-rtp' && r.kind === 'video') v = r; });
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if (!v) { showConnecting(cam); continue; }
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const cur = {
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t: v.timestamp,
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recv: v.framesReceived ?? 0,
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dec: v.framesDecoded ?? 0,
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drop: v.framesDropped ?? 0,
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lost: v.packetsLost ?? 0,
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bytes: v.bytesReceived ?? 0,
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};
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const last = cam.statsLast;
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cam.statsLast = cur;
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// Erster Messpunkt oder Zähler-Reset → nur Baseline
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if (!last || cur.t <= last.t || cur.recv < last.recv) {
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setInfo(cam, 'misst…', '');
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continue;
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}
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const dt = (cur.t - last.t) / 1000;
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const recvPs = Math.round((cur.recv - last.recv) / dt);
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const decPs = Math.round((cur.dec - last.dec) / dt);
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const dropPs = Math.round((cur.drop - last.drop) / dt);
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const lostD = Math.max(0, cur.lost - last.lost);
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const mbps = (((cur.bytes - last.bytes) * 8) / dt / 1e6).toFixed(2);
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const jitter = v.jitter != null ? Math.round(v.jitter * 1000) : 0;
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const size = (v.frameWidth && v.frameHeight) ? `${v.frameWidth}x${v.frameHeight}` : '?';
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log(cam.id, `[stats] recv=${recvPs}/s decoded=${decPs}/s dropped=${dropPs}/s ` +
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`lost=+${lostD} jitter=${jitter}ms ${size} ${mbps}Mbps`);
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// Während Aufwärmphase: anzeigen, aber NICHT bewerten
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if (now - cam.playingSince < WARMUP_MS) {
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const secs = Math.ceil((WARMUP_MS - (now - cam.playingSince)) / 1000);
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setInfo(cam, `startet… ${decPs} fps (${secs}s)`, '');
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cam.badTicks = 0;
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continue;
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}
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// ── Bewertung nach Aufwärmphase ──
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const clientOverload = recvPs >= SERVER_LOW_FPS && decPs < recvPs * CLIENT_DECODE_RATIO;
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const serverLow = recvPs < SERVER_LOW_FPS;
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const netBad = lostD > NET_LOST_PER_TICK || jitter > NET_JITTER_MS;
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if (clientOverload) {
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setInfo(cam, `Decoder hängt ${decPs}/${recvPs} fps`, 'crit');
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cam.badTicks++;
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} else {
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cam.badTicks = 0;
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if (serverLow) setInfo(cam, `Server liefert ${recvPs}/s`, 'warn');
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else if (netBad) setInfo(cam, `${decPs} fps · ⚠ ${jitter}ms / lost+${lostD}`, 'warn');
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else setInfo(cam, `${decPs} fps · ${mbps} Mbps`, 'ok');
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}
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// Auto-Schutz NUR bei echter Client-Überlast (Decoder kommt nicht nach)
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if (cam.badTicks >= OVERLOAD_TICKS) {
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warn(cam.id, `Decoder überlastet (${cam.badTicks}× kritisch) → Auto-Abschaltung`);
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stopStream(cam, true);
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}
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}
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}
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// ── Hinweis-Banner bei Auto-Abschaltung ──────────────────────────────────────
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function showNotice() {
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const off = cameras.filter(c => c.autoOff && !c.active).map(c => c.id);
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const bar = document.getElementById('notice');
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if (off.length === 0) { bar.style.display = 'none'; return; }
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bar.innerHTML = `⚠ Client überlastet – automatisch deaktiviert: <b>${off.join(', ')}</b> `;
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const btn = document.createElement('button');
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btn.textContent = 'Wieder aktivieren';
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btn.onclick = () => {
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cameras.filter(c => c.autoOff && !c.active).forEach(c => { c.autoOff = false; startStream(c); });
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showNotice();
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};
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bar.appendChild(btn);
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bar.style.display = 'flex';
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}
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// ── HD-Snapshot aller Kameras (parallel) ─────────────────────────────────────
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// cam0 und cam1 liegen auf getrennten Geräten → gleichzeitiger Grab sicher.
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// Alle Live-Streams werden synchron eingefroren und losgelassen, dann beide
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// /hires-Requests parallel gefeuert. finally stellt immer alle zurück.
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async function snapshotAllHires() {
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if (cameras.some(c => c.testing)) return;
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const snapBtn = document.getElementById('snapAllBtn');
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if (snapBtn) snapBtn.disabled = true;
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cameras.forEach(c => { c.testing = true; c.hdBtn.disabled = true; });
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log('snap', `HD-Grab alle: ${cameras.map(c => c.id).join(', ')}`);
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try {
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// 1. Alle Freeze-Canvases gleichzeitig aufbauen (je ein /api/snapshot-Fetch)
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await Promise.all(cameras.map(c => showFreezeCanvas(c, 'Capturing HD…')));
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// 2. Alle Live-Streams synchron loslassen → alle Consumer fallen gleichzeitig auf 0
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cameras.forEach(c => stopStream(c));
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const ts = Date.now();
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// 3. Alle /hires-Grabs parallel – Fehler einer Kamera blockieren die andere nicht
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await Promise.allSettled(cameras.map(async c => {
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try {
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const r = await fetch(
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`/api/snapshot/${encodeURIComponent(c.id)}/hires`,
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{ signal: AbortSignal.timeout(20000) }
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);
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if (!r.ok) {
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const body = await r.json().catch(() => ({}));
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throw new Error(body.error ?? `HTTP ${r.status}`);
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}
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const blob = await r.blob();
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const blobUrl = URL.createObjectURL(blob);
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if (c.freezeCanvas) {
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const ctx = c.freezeCanvas.getContext('2d');
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await new Promise(resolve => {
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const img = new Image();
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img.onload = () => { ctx.drawImage(img, 0, 0, 640, 480); resolve(); };
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img.onerror = resolve;
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img.src = blobUrl;
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});
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updateBadge(c, 'HD ✓', '#8f8');
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}
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const a = document.createElement('a');
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a.href = blobUrl;
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a.download = `${c.id}_hires_${ts}.jpg`;
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document.body.appendChild(a);
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a.click();
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a.remove();
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URL.revokeObjectURL(blobUrl);
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setInfo(c, 'HD gespeichert', 'ok');
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log(c.id, `HD-Grab OK – ${blob.size} bytes`);
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} catch (e) {
|
||
logErr(c.id, 'HD-Grab fehlgeschlagen', e);
|
||
setInfo(c, `HD Fehler: ${e.message}`, 'crit');
|
||
}
|
||
}));
|
||
|
||
} finally {
|
||
// 4. Immer: alle zurück auf Live
|
||
await sleep(600);
|
||
cameras.forEach(c => {
|
||
removeFreezeCanvas(c);
|
||
startStream(c);
|
||
c.testing = false;
|
||
c.hdBtn.disabled = false;
|
||
});
|
||
if (snapBtn) snapBtn.disabled = false;
|
||
log('snap', '── HD-Grab alle beendet, alle zurück auf Live ──');
|
||
}
|
||
}
|
||
|
||
// ── Kamera-View aufbauen ─────────────────────────────────────────────────────
|
||
function buildCamera(camId, container) {
|
||
const box = document.createElement('div');
|
||
box.className = 'cam-box';
|
||
|
||
const label = document.createElement('div');
|
||
label.className = 'cam-label';
|
||
label.textContent = camId;
|
||
|
||
const info = document.createElement('div');
|
||
info.className = 'cam-info';
|
||
info.textContent = '…';
|
||
|
||
const toggle = document.createElement('button');
|
||
toggle.className = 'cam-toggle';
|
||
|
||
const hd = document.createElement('button');
|
||
hd.className = 'cam-hdtest';
|
||
hd.textContent = 'HD';
|
||
hd.title = 'Hi-Res-Snapshot (1280×960) – cam loslassen, hires-Grab, Download';
|
||
|
||
const cam = {
|
||
id: camId, box, infoEl: info, toggleBtn: toggle, hdBtn: hd,
|
||
active: false, startedAt: 0, playingSince: null, statsLast: null, badTicks: 0, autoOff: false,
|
||
testing: false, freezeCanvas: null,
|
||
};
|
||
toggle.onclick = () => {
|
||
if (cam.testing) return; // während HD-Test gesperrt
|
||
cam.autoOff = false; cam.active ? stopStream(cam) : startStream(cam); showNotice();
|
||
};
|
||
hd.onclick = () => runHiresGrab(cam);
|
||
|
||
box.appendChild(label);
|
||
box.appendChild(info);
|
||
box.appendChild(toggle);
|
||
box.appendChild(hd);
|
||
container.appendChild(box);
|
||
|
||
cameras.push(cam);
|
||
startStream(cam);
|
||
}
|
||
|
||
// ── Init ─────────────────────────────────────────────────────────────────────
|
||
async function init() {
|
||
log('init', 'Starte...');
|
||
|
||
try {
|
||
const d = await (await fetch('/config.json')).json();
|
||
GO2RTC_PORT = d.go2rtcPort ?? 1984;
|
||
log('init', `go2rtc WS-Port: ${GO2RTC_PORT}`);
|
||
} catch (e) {
|
||
warn('init', `/config.json nicht ladbar, nehme Port ${GO2RTC_PORT}`);
|
||
}
|
||
|
||
try {
|
||
await customElements.whenDefined('video-stream');
|
||
log('init', '<video-stream> definiert');
|
||
} catch (e) {
|
||
logErr('init', '<video-stream> nicht geladen – /video-stream.js erreichbar?', e);
|
||
return;
|
||
}
|
||
|
||
const container = document.getElementById('cameras');
|
||
const statusText = document.getElementById('statusText');
|
||
|
||
let camIds = [];
|
||
try {
|
||
const r = await fetch('/api/snapshot');
|
||
log('init', `/api/snapshot → HTTP ${r.status}`);
|
||
if (r.ok) camIds = ((await r.json()).cameras ?? []).map(c => c.id);
|
||
log('init', `Kameras: ${camIds.join(', ') || '(keine)'}`);
|
||
} catch (e) {
|
||
logErr('init', '/api/snapshot Fehler – Fallback', e);
|
||
}
|
||
if (camIds.length === 0) { warn('init', 'Fallback cam0, cam1'); camIds = ['cam0', 'cam1']; }
|
||
|
||
const snapBtn = document.getElementById('snapAllBtn');
|
||
if (snapBtn) { snapBtn.onclick = snapshotAllHires; snapBtn.disabled = false; }
|
||
|
||
camIds.forEach(id => buildCamera(id, container));
|
||
statusText.textContent = `${camIds.length} Kamera${camIds.length !== 1 ? 's' : ''} · WebRTC`;
|
||
|
||
setInterval(monitor, MONITOR_INTERVAL); // getStats-basierte Überwachung + Diagnose
|
||
log('init', 'Fertig – Überwachung (getStats) aktiv');
|
||
}
|
||
|
||
init();
|