init

2023-04-20 12:05:32 +02:00
commit 9975bbb42c
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--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,23 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
--- a/README.md
+++ b/README.md
@@ -0,0 +1,46 @@
+# Getting Started with Create React App
+
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `yarn start`
+
+Runs the app in the development mode.\
+Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
+
+The page will reload if you make edits.\
+You will also see any lint errors in the console.
+
+### `yarn test`
+
+Launches the test runner in the interactive watch mode.\
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+
+### `yarn build`
+
+Builds the app for production to the `build` folder.\
+It correctly bundles React in production mode and optimizes the build for the best performance.
+
+The build is minified and the filenames include the hashes.\
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `yarn eject`
+
+**Note: this is a one-way operation. Once you `eject`, you can’t go back!**
+
+If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
+
+Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.
+
+You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.
+
+## Learn More
+
+You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
+
+To learn React, check out the [React documentation](https://reactjs.org/).
--- a/archive/test.html
+++ b/archive/test.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>go2rtc - Stream</title>
+    <style>
+      body {
+        background: black;
+        margin: 0;
+        padding: 0;
+        display: flex;
+        font-family: Arial, Helvetica, sans-serif;
+      }
+
+      html,
+      body {
+        height: 100%;
+        width: 100%;
+      }
+
+      .flex {
+        flex-wrap: wrap;
+        align-content: flex-start;
+        align-items: flex-start;
+      }
+    </style>
+  </head>
+  <body>
+    <script type="module" src="./video-stream.js"></script>
+    <script type="module">
+      const params = new URLSearchParams(location.search)
+
+      // support multiple streams and multiple modes
+      const streams = params.getAll('src')
+      const modes = params.getAll('mode')
+      if (modes.length === 0) modes.push('')
+
+      while (modes.length > streams.length) {
+        streams.push(streams[0])
+      }
+      while (streams.length > modes.length) {
+        modes.push(modes[0])
+      }
+
+      if (streams.length > 1) {
+        document.body.className = 'flex'
+      }
+
+      const background = params.get('background') !== 'false'
+      const width = '1 0 ' + (params.get('width') || '320px')
+
+      for (let i = 0; i < streams.length; i++) {
+        /** @type {VideoStream} */
+        const video = document.createElement('video-stream')
+        video.background = background
+        video.mode = modes[i] || video.mode
+        video.style.flex = width
+        video.src = new URL('api/ws?src=' + encodeURIComponent(streams[i]), location.href)
+        document.body.appendChild(video)
+      }
+    </script>
+  </body>
+</html>
--- a/archive/video-rtc.js
+++ b/archive/video-rtc.js
@@ -0,0 +1,597 @@
+/**
+ * Video player for go2rtc streaming application.
+ *
+ * All modern web technologies are supported in almost any browser except Apple Safari.
+ *
+ * Support:
+ * - RTCPeerConnection for Safari iOS 11.0+
+ * - IntersectionObserver for Safari iOS 12.2+
+ *
+ * Doesn't support:
+ * - MediaSource for Safari iOS all
+ * - Customized built-in elements (extends HTMLVideoElement) because all Safari
+ * - Public class fields because old Safari (before 14.0)
+ * - Autoplay for Safari
+ */
+export class VideoRTC extends HTMLElement {
+    constructor() {
+        super();
+
+        this.DISCONNECT_TIMEOUT = 5000;
+        this.RECONNECT_TIMEOUT = 30000;
+
+        this.CODECS = [
+            "avc1.640029",      // H.264 high 4.1 (Chromecast 1st and 2nd Gen)
+            "avc1.64002A",      // H.264 high 4.2 (Chromecast 3rd Gen)
+            "avc1.640033",      // H.264 high 5.1 (Chromecast with Google TV)
+            "hvc1.1.6.L153.B0", // H.265 main 5.1 (Chromecast Ultra)
+            "mp4a.40.2",        // AAC LC
+            "mp4a.40.5",        // AAC HE
+            "opus",             // OPUS Chrome
+        ];
+
+        /**
+         * [config] Supported modes (webrtc, mse, mp4, mjpeg).
+         * @type {string}
+         */
+        this.mode = "webrtc,mse,mp4,mjpeg";
+
+        /**
+         * [config] Run stream when not displayed on the screen. Default `false`.
+         * @type {boolean}
+         */
+        this.background = false;
+
+        /**
+         * [config] Run stream only when player in the viewport. Stop when user scroll out player.
+         * Value is percentage of visibility from `0` (not visible) to `1` (full visible).
+         * Default `0` - disable;
+         * @type {number}
+         */
+        this.visibilityThreshold = 0;
+
+        /**
+         * [config] Run stream only when browser page on the screen. Stop when user change browser
+         * tab or minimise browser windows.
+         * @type {boolean}
+         */
+        this.visibilityCheck = true;
+
+        /**
+         * [config] WebRTC configuration
+         * @type {RTCConfiguration}
+         */
+        this.pcConfig = {
+            iceServers: [{urls: 'stun:stun.l.google.com:19302'}],
+            sdpSemantics: 'unified-plan',  // important for Chromecast 1
+        };
+
+        /**
+         * [info] WebSocket connection state. Values: CONNECTING, OPEN, CLOSED
+         * @type {number}
+         */
+        this.wsState = WebSocket.CLOSED;
+
+        /**
+         * [info] WebRTC connection state.
+         * @type {number}
+         */
+        this.pcState = WebSocket.CLOSED;
+
+        /**
+         * @type {HTMLVideoElement}
+         */
+        this.video = null;
+
+        /**
+         * @type {WebSocket}
+         */
+        this.ws = null;
+
+        /**
+         * @type {string|URL}
+         */
+        this.wsURL = "";
+
+        /**
+         * @type {RTCPeerConnection}
+         */
+        this.pc = null;
+
+        /**
+         * @type {number}
+         */
+        this.connectTS = 0;
+
+        /**
+         * @type {string}
+         */
+        this.mseCodecs = "";
+
+        /**
+         * [internal] Disconnect TimeoutID.
+         * @type {number}
+         */
+        this.disconnectTID = 0;
+
+        /**
+         * [internal] Reconnect TimeoutID.
+         * @type {number}
+         */
+        this.reconnectTID = 0;
+
+        /**
+         * [internal] Handler for receiving Binary from WebSocket.
+         * @type {Function}
+         */
+        this.ondata = null;
+
+        /**
+         * [internal] Handlers list for receiving JSON from WebSocket
+         * @type {Object.<string,Function>}}
+         */
+        this.onmessage = null;
+    }
+
+    /**
+     * Set video source (WebSocket URL). Support relative path.
+     * @param {string|URL} value
+     */
+    set src(value) {
+        if (typeof value !== "string") value = value.toString();
+        if (value.startsWith("http")) {
+            value = "ws" + value.substring(4);
+        } else if (value.startsWith("/")) {
+            value = "ws" + location.origin.substring(4) + value;
+        }
+
+        this.wsURL = value;
+
+        this.onconnect();
+    }
+
+    /**
+     * Play video. Support automute when autoplay blocked.
+     * https://developer.chrome.com/blog/autoplay/
+     */
+    play() {
+        this.video.play().catch(er => {
+            if (er.name === "NotAllowedError" && !this.video.muted) {
+                this.video.muted = true;
+                this.video.play().catch(() => console.debug);
+            }
+        });
+    }
+
+    /**
+     * Send message to server via WebSocket
+     * @param {Object} value
+     */
+    send(value) {
+        if (this.ws) this.ws.send(JSON.stringify(value));
+    }
+
+    codecs(type) {
+        const test = type === "mse"
+            ? codec => MediaSource.isTypeSupported(`video/mp4; codecs="${codec}"`)
+            : codec => this.video.canPlayType(`video/mp4; codecs="${codec}"`);
+        return this.CODECS.filter(test).join();
+    }
+
+    /**
+     * `CustomElement`. Invoked each time the custom element is appended into a
+     * document-connected element.
+     */
+    connectedCallback() {
+        if (this.disconnectTID) {
+            clearTimeout(this.disconnectTID);
+            this.disconnectTID = 0;
+        }
+
+        // because video autopause on disconnected from DOM
+        if (this.video) {
+            const seek = this.video.seekable;
+            if (seek.length > 0) {
+                this.video.currentTime = seek.end(seek.length - 1);
+            }
+            this.play();
+        } else {
+            this.oninit();
+        }
+
+        this.onconnect();
+    }
+
+    /**
+     * `CustomElement`. Invoked each time the custom element is disconnected from the
+     * document's DOM.
+     */
+    disconnectedCallback() {
+        if (this.background || this.disconnectTID) return;
+        if (this.wsState === WebSocket.CLOSED && this.pcState === WebSocket.CLOSED) return;
+
+        this.disconnectTID = setTimeout(() => {
+            if (this.reconnectTID) {
+                clearTimeout(this.reconnectTID);
+                this.reconnectTID = 0;
+            }
+
+            this.disconnectTID = 0;
+
+            this.ondisconnect();
+        }, this.DISCONNECT_TIMEOUT);
+    }
+
+    /**
+     * Creates child DOM elements. Called automatically once on `connectedCallback`.
+     */
+    oninit() {
+        this.video = document.createElement("video");
+        this.video.controls = true;
+        this.video.playsInline = true;
+        this.video.preload = "auto";
+
+        this.video.style.display = "block"; // fix bottom margin 4px
+        this.video.style.width = "100%";
+        this.video.style.height = "100%"
+
+        this.appendChild(this.video);
+
+        if (this.background) return;
+
+        if ("hidden" in document && this.visibilityCheck) {
+            document.addEventListener("visibilitychange", () => {
+                if (document.hidden) {
+                    this.disconnectedCallback();
+                } else if (this.isConnected) {
+                    this.connectedCallback();
+                }
+            })
+        }
+
+        if ("IntersectionObserver" in window && this.visibilityThreshold) {
+            const observer = new IntersectionObserver(entries => {
+                entries.forEach(entry => {
+                    if (!entry.isIntersecting) {
+                        this.disconnectedCallback();
+                    } else if (this.isConnected) {
+                        this.connectedCallback();
+                    }
+                });
+            }, {threshold: this.visibilityThreshold});
+            observer.observe(this);
+        }
+    }
+
+    /**
+     * Connect to WebSocket. Called automatically on `connectedCallback`.
+     * @return {boolean} true if the connection has started.
+     */
+    onconnect() {
+        if (!this.isConnected || !this.wsURL || this.ws || this.pc) return false;
+
+        // CLOSED or CONNECTING => CONNECTING
+        this.wsState = WebSocket.CONNECTING;
+
+        this.connectTS = Date.now();
+
+        this.ws = new WebSocket(this.wsURL);
+        this.ws.binaryType = "arraybuffer";
+        this.ws.addEventListener("open", ev => this.onopen(ev));
+        this.ws.addEventListener("close", ev => this.onclose(ev));
+
+        return true;
+    }
+
+    ondisconnect() {
+        this.wsState = WebSocket.CLOSED;
+        if (this.ws) {
+            this.ws.close();
+            this.ws = null;
+        }
+
+        this.pcState = WebSocket.CLOSED;
+        if (this.pc) {
+            this.pc.close();
+            this.pc = null;
+        }
+    }
+
+    /**
+     * @returns {Array.<string>} of modes (mse, webrtc, etc.)
+     */
+    onopen() {
+        // CONNECTING => OPEN
+        this.wsState = WebSocket.OPEN;
+
+        this.ws.addEventListener("message", ev => {
+            if (typeof ev.data === "string") {
+                const msg = JSON.parse(ev.data);
+                for (const mode in this.onmessage) {
+                    this.onmessage[mode](msg);
+                }
+            } else {
+                this.ondata(ev.data);
+            }
+        });
+
+        this.ondata = null;
+        this.onmessage = {};
+
+        const modes = [];
+
+        if (this.mode.indexOf("mse") >= 0 && "MediaSource" in window) { // iPhone
+            modes.push("mse");
+            this.onmse();
+        } else if (this.mode.indexOf("mp4") >= 0) {
+            modes.push("mp4");
+            this.onmp4();
+        }
+
+        if (this.mode.indexOf("webrtc") >= 0 && "RTCPeerConnection" in window) { // macOS Desktop app
+            modes.push("webrtc");
+            this.onwebrtc();
+        }
+
+        if (this.mode.indexOf("mjpeg") >= 0) {
+            if (modes.length) {
+                this.onmessage["mjpeg"] = msg => {
+                    if (msg.type !== "error" || msg.value.indexOf(modes[0]) !== 0) return;
+                    this.onmjpeg();
+                }
+            } else {
+                modes.push("mjpeg");
+                this.onmjpeg();
+            }
+        }
+
+        return modes;
+    }
+
+    /**
+     * @return {boolean} true if reconnection has started.
+     */
+    onclose() {
+        if (this.wsState === WebSocket.CLOSED) return false;
+
+        // CONNECTING, OPEN => CONNECTING
+        this.wsState = WebSocket.CONNECTING;
+        this.ws = null;
+
+        // reconnect no more than once every X seconds
+        const delay = Math.max(this.RECONNECT_TIMEOUT - (Date.now() - this.connectTS), 0);
+
+        this.reconnectTID = setTimeout(() => {
+            this.reconnectTID = 0;
+            this.onconnect();
+        }, delay);
+
+        return true;
+    }
+
+    onmse() {
+        const ms = new MediaSource();
+        ms.addEventListener("sourceopen", () => {
+            URL.revokeObjectURL(this.video.src);
+            this.send({type: "mse", value: this.codecs("mse")});
+        }, {once: true});
+
+        this.video.src = URL.createObjectURL(ms);
+        this.video.srcObject = null;
+        this.play();
+
+        this.mseCodecs = "";
+
+        this.onmessage["mse"] = msg => {
+            if (msg.type !== "mse") return;
+
+            this.mseCodecs = msg.value;
+
+            const sb = ms.addSourceBuffer(msg.value);
+            sb.mode = "segments"; // segments or sequence
+            sb.addEventListener("updateend", () => {
+                if (sb.updating) return;
+
+                try {
+                    if (bufLen > 0) {
+                        const data = buf.slice(0, bufLen);
+                        bufLen = 0;
+                        sb.appendBuffer(data);
+                    } else if (sb.buffered && sb.buffered.length) {
+                        const end = sb.buffered.end(sb.buffered.length - 1) - 15;
+                        const start = sb.buffered.start(0);
+                        if (end > start) {
+                            sb.remove(start, end);
+                            ms.setLiveSeekableRange(end, end + 15);
+                        }
+                        // console.debug("VideoRTC.buffered", start, end);
+                    }
+                } catch (e) {
+                    // console.debug(e);
+                }
+            });
+
+            const buf = new Uint8Array(2 * 1024 * 1024);
+            let bufLen = 0;
+
+            this.ondata = data => {
+                if (sb.updating || bufLen > 0) {
+                    const b = new Uint8Array(data);
+                    buf.set(b, bufLen);
+                    bufLen += b.byteLength;
+                    // console.debug("VideoRTC.buffer", b.byteLength, bufLen);
+                } else {
+                    try {
+                        sb.appendBuffer(data);
+                    } catch (e) {
+                        // console.debug(e);
+                    }
+                }
+            }
+        }
+    }
+
+    onwebrtc() {
+        const pc = new RTCPeerConnection(this.pcConfig);
+
+        /** @type {HTMLVideoElement} */
+        const video2 = document.createElement("video");
+        video2.addEventListener("loadeddata", ev => this.onpcvideo(ev), {once: true});
+
+        pc.addEventListener("icecandidate", ev => {
+            const candidate = ev.candidate ? ev.candidate.toJSON().candidate : "";
+            this.send({type: "webrtc/candidate", value: candidate});
+        });
+
+        pc.addEventListener("track", ev => {
+            // when stream already init
+            if (video2.srcObject !== null) return;
+
+            // when audio track not exist in Chrome
+            if (ev.streams.length === 0) return;
+
+            // when audio track not exist in Firefox
+            if (ev.streams[0].id[0] === '{') return;
+
+            video2.srcObject = ev.streams[0];
+        });
+
+        pc.addEventListener("connectionstatechange", () => {
+            if (pc.connectionState === "failed" || pc.connectionState === "disconnected") {
+                pc.close(); // stop next events
+
+                this.pcState = WebSocket.CLOSED;
+                this.pc = null;
+
+                this.onconnect();
+            }
+        });
+
+        this.onmessage["webrtc"] = msg => {
+            switch (msg.type) {
+                case "webrtc/candidate":
+                    pc.addIceCandidate({
+                        candidate: msg.value,
+                        sdpMid: "0"
+                    }).catch(() => console.debug);
+                    break;
+                case "webrtc/answer":
+                    pc.setRemoteDescription({
+                        type: "answer",
+                        sdp: msg.value
+                    }).catch(() => console.debug);
+                    break;
+                case "error":
+                    if (msg.value.indexOf("webrtc/offer") < 0) return;
+                    pc.close();
+            }
+        };
+
+        // Safari doesn't support "offerToReceiveVideo"
+        pc.addTransceiver("video", {direction: "recvonly"});
+        pc.addTransceiver("audio", {direction: "recvonly"});
+
+        pc.createOffer().then(offer => {
+            pc.setLocalDescription(offer).then(() => {
+                this.send({type: "webrtc/offer", value: offer.sdp});
+            });
+        });
+
+        this.pcState = WebSocket.CONNECTING;
+        this.pc = pc;
+    }
+
+    /**
+     * @param ev {Event}
+     */
+    onpcvideo(ev) {
+        if (!this.pc) return;
+
+        /** @type {HTMLVideoElement} */
+        const video2 = ev.target;
+        const state = this.pc.connectionState;
+
+        // Firefox doesn't support pc.connectionState
+        if (state === "connected" || state === "connecting" || !state) {
+            // Video+Audio > Video, H265 > H264, Video > Audio, WebRTC > MSE
+            let rtcPriority = 0, msePriority = 0;
+
+            /** @type {MediaStream} */
+            const ms = video2.srcObject;
+            if (ms.getVideoTracks().length > 0) rtcPriority += 0x220;
+            if (ms.getAudioTracks().length > 0) rtcPriority += 0x102;
+
+            if (this.mseCodecs.indexOf("hvc1.") >= 0) msePriority += 0x230;
+            if (this.mseCodecs.indexOf("avc1.") >= 0) msePriority += 0x210;
+            if (this.mseCodecs.indexOf("mp4a.") >= 0) msePriority += 0x101;
+
+            if (rtcPriority >= msePriority) {
+                this.video.srcObject = ms;
+                this.play();
+
+                this.pcState = WebSocket.OPEN;
+
+                this.wsState = WebSocket.CLOSED;
+                this.ws.close();
+                this.ws = null;
+            } else {
+                this.pcState = WebSocket.CLOSED;
+                this.pc.close();
+                this.pc = null;
+            }
+        }
+
+        video2.srcObject = null;
+    }
+
+    onmjpeg() {
+        this.ondata = data => {
+            this.video.controls = false;
+            this.video.poster = "data:image/jpeg;base64," + VideoRTC.btoa(data);
+        };
+
+        this.send({type: "mjpeg"});
+    }
+
+    onmp4() {
+        /** @type {HTMLCanvasElement} **/
+        const canvas = document.createElement("canvas");
+        /** @type {CanvasRenderingContext2D} */
+        let context;
+
+        /** @type {HTMLVideoElement} */
+        const video2 = document.createElement("video");
+        video2.autoplay = true;
+        video2.playsInline = true;
+        video2.muted = true;
+
+        video2.addEventListener("loadeddata", ev => {
+            if (!context) {
+                canvas.width = video2.videoWidth;
+                canvas.height = video2.videoHeight;
+                context = canvas.getContext('2d');
+            }
+
+            context.drawImage(video2, 0, 0, canvas.width, canvas.height);
+
+            this.video.controls = false;
+            this.video.poster = canvas.toDataURL("image/jpeg");
+        });
+
+        this.ondata = data => {
+            video2.src = "data:video/mp4;base64," + VideoRTC.btoa(data);
+        };
+
+        this.send({type: "mp4", value: this.codecs("mp4")});
+    }
+
+    static btoa(buffer) {
+        const bytes = new Uint8Array(buffer);
+        const len = bytes.byteLength;
+        let binary = "";
+        for (let i = 0; i < len; i++) {
+            binary += String.fromCharCode(bytes[i]);
+        }
+        return window.btoa(binary);
+    }
+}
--- a/archive/video-stream.js
+++ b/archive/video-stream.js
@@ -0,0 +1,98 @@
+import {VideoRTC} from "./video-rtc.js";
+
+class VideoStream extends VideoRTC {
+    set divMode(value) {
+        this.querySelector(".mode").innerText = value;
+        this.querySelector(".status").innerText = "";
+    }
+
+    set divError(value) {
+        const state = this.querySelector(".mode").innerText;
+        if (state !== "loading") return;
+        this.querySelector(".mode").innerText = "error";
+        this.querySelector(".status").innerText = value;
+    }
+
+    /**
+     * Custom GUI
+     */
+    oninit() {
+        console.debug("stream.oninit");
+        super.oninit();
+
+        this.innerHTML = `
+        <style>
+        video-stream {
+            position: relative;
+        }
+        .info {
+            position: absolute;
+            top: 0;
+            left: 0;
+            right: 0;
+            padding: 12px;
+            color: white;
+            display: flex;
+            justify-content: space-between;
+            pointer-events: none;
+        }
+        </style>
+        <div class="info">
+            <div class="status"></div>
+            <div class="mode"></div>
+        </div>
+        `;
+
+        const info = this.querySelector(".info")
+        this.insertBefore(this.video, info);
+    }
+
+    onconnect() {
+        console.debug("stream.onconnect");
+        const result = super.onconnect();
+        if (result) this.divMode = "loading";
+        return result;
+    }
+
+    ondisconnect() {
+        console.debug("stream.ondisconnect");
+        super.ondisconnect();
+    }
+
+    onopen() {
+        console.debug("stream.onopen");
+        const result = super.onopen();
+
+        this.onmessage["stream"] = msg => {
+            console.debug("stream.onmessge", msg);
+            switch (msg.type) {
+                case "error":
+                    this.divError = msg.value;
+                    break;
+                case "mse":
+                case "mp4":
+                case "mjpeg":
+                    this.divMode = msg.type.toUpperCase();
+                    break;
+            }
+        }
+
+        return result;
+    }
+
+    onclose() {
+        console.debug("stream.onclose");
+        return super.onclose();
+    }
+
+    onpcvideo(ev) {
+        console.debug("stream.onpcvideo");
+        super.onpcvideo(ev);
+
+        if (this.pcState !== WebSocket.CLOSED) {
+            this.divMode = "RTC";
+        }
+    }
+}
+
+customElements.define("video-stream", VideoStream);
--- a/archive/webrtc.html
+++ b/archive/webrtc.html
@@ -0,0 +1,159 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>go2rtc - WebRTC</title>
+    <style>
+      body {
+        background-color: black;
+        margin: 0;
+        padding: 0;
+      }
+
+      html,
+      body,
+      video {
+        height: 100%;
+        width: 100%;
+        aspect-ratio: 16 / 9;
+        object-fit: fill;
+      }
+      div {
+        display: flex;
+      }
+      .column {
+        flex-direction: column;
+      }
+      .row {
+        flex-direction: row;
+        flex: 1;
+      }
+      .videoContainer {
+        flex: 1;
+      }
+    </style>
+  </head>
+  <body>
+    <div class="column">
+      <div class="row">
+        <div class="videoContainer">
+          <video id="video" autoplay controls playsinline muted></video>
+        </div>
+        <div class="videoContainer"><video id="video2" autoplay controls playsinline muted></video></div>
+        <div class="videoContainer"><video id="video3" autoplay controls playsinline muted></video></div>
+      </div>
+      <div class="row">
+        <div class="videoContainer">
+          <video id="video4" autoplay controls playsinline muted></video>
+        </div>
+        <div class="videoContainer"><video id="video5" autoplay controls playsinline muted></video></div>
+        <div class="videoContainer"><video id="video6" autoplay controls playsinline muted></video></div>
+      </div>
+    </div>
+
+    <script>
+      async function PeerConnection(media) {
+        const pc = new RTCPeerConnection({
+          iceServers: [{ urls: 'stun:stun.l.google.com:19302' }],
+        })
+
+        const localTracks = []
+
+        if (/camera|microphone/.test(media)) {
+          const tracks = await getMediaTracks('user', {
+            video: media.indexOf('camera') >= 0,
+            audio: media.indexOf('microphone') >= 0,
+          })
+          tracks.forEach((track) => {
+            pc.addTransceiver(track, { direction: 'sendonly' })
+            if (track.kind === 'video') localTracks.push(track)
+          })
+        }
+
+        if (media.indexOf('display') >= 0) {
+          const tracks = await getMediaTracks('display', {
+            video: true,
+            audio: media.indexOf('speaker') >= 0,
+          })
+          tracks.forEach((track) => {
+            pc.addTransceiver(track, { direction: 'sendonly' })
+            if (track.kind === 'video') localTracks.push(track)
+          })
+        }
+
+        if (/video|audio/.test(media)) {
+          const tracks = ['video', 'audio']
+            .filter((kind) => media.indexOf(kind) >= 0)
+            .map((kind) => pc.addTransceiver(kind, { direction: 'recvonly' }).receiver.track)
+          localTracks.push(...tracks)
+        }
+
+        return { pc, localTracks }
+      }
+
+      async function getMediaTracks(media, constraints) {
+        try {
+          const stream =
+            media === 'user'
+              ? await navigator.mediaDevices.getUserMedia(constraints)
+              : await navigator.mediaDevices.getDisplayMedia(constraints)
+          return stream.getTracks()
+        } catch (e) {
+          console.warn(e)
+          return []
+        }
+      }
+
+      async function connect(url, media, videoId) {
+        const { pc, localTracks } = await PeerConnection(media)
+        // const url = new URL('api/ws' + location.search, location.href)
+
+        document.getElementById(videoId).srcObject = new MediaStream(localTracks)
+
+        const ws = new WebSocket('ws' + url.toString().substring(4))
+
+        ws.addEventListener('open', () => {
+          pc.addEventListener('icecandidate', (ev) => {
+            if (!ev.candidate) return
+            const msg = { type: 'webrtc/candidate', value: ev.candidate.candidate }
+            ws.send(JSON.stringify(msg))
+          })
+
+          pc.createOffer()
+            .then((offer) => pc.setLocalDescription(offer))
+            .then(() => {
+              const msg = { type: 'webrtc/offer', value: pc.localDescription.sdp }
+              ws.send(JSON.stringify(msg))
+            })
+        })
+
+        ws.addEventListener('message', (ev) => {
+          const msg = JSON.parse(ev.data)
+          if (msg.type === 'webrtc/candidate') {
+            pc.addIceCandidate({ candidate: msg.value, sdpMid: '0' })
+          } else if (msg.type === 'webrtc/answer') {
+            pc.setRemoteDescription({ type: 'answer', sdp: msg.value })
+          }
+        })
+      }
+
+      const media = new URLSearchParams(location.search).get('media')
+
+      const start = () => {
+        const url = new URL('http://10.10.0.64:1984/api/ws?src=unifi_einfahrt&media=video')
+        const url2 = new URL('http://10.10.0.64:1984/api/ws?src=unifi_haustuer&media=video')
+        const url3 = new URL('http://10.10.0.64:1984/api/ws?src=unifi_garage&media=video')
+        const url4 = new URL('http://10.10.0.64:1984/api/ws?src=unifi_garten&media=video')
+        const url5 = new URL('http://10.10.0.64:1984/api/ws?src=unifi_wintergarten&media=video')
+
+        connect(url, media || 'video+audio', 'video')
+        connect(url2, media || 'video+audio', 'video2')
+        connect(url3, media || 'video+audio', 'video3')
+        connect(url4, media || 'video+audio', 'video4')
+        connect(url5, media || 'video+audio', 'video5')
+      }
+
+      start()
+    </script>
+  </body>
+</html>
--- a/package.json
+++ b/package.json
@@ -0,0 +1,48 @@
+{
+  "name": "commandcenter",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "@heroicons/react": "^2.0.17",
+    "@testing-library/jest-dom": "^5.14.1",
+    "@testing-library/react": "^13.0.0",
+    "@testing-library/user-event": "^13.2.1",
+    "@types/jest": "^27.0.1",
+    "@types/node": "^16.7.13",
+    "@types/react": "^18.0.0",
+    "@types/react-dom": "^18.0.0",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "react-scripts": "5.0.1",
+    "typescript": "^4.4.2",
+    "web-vitals": "^2.1.0"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject",
+    "deploy": "rsync -ar build/* 10.10.0.64:/home/jens/Docker/commandcenter/html"
+  },
+  "eslintConfig": {
+    "extends": [
+      "react-app",
+      "react-app/jest"
+    ]
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  },
+  "devDependencies": {
+    "tailwindcss": "^3.3.1"
+  }
+}
--- a/public/favicon.ico
+++ b/public/favicon.ico
--- a/public/index.html
+++ b/public/index.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta
+      name="description"
+      content="Web site created using create-react-app"
+    />
+    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
+    <!--
+      manifest.json provides metadata used when your web app is installed on a
+      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
+    -->
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
+    <!--
+      Notice the use of %PUBLIC_URL% in the tags above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>React App</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start` or `yarn start`.
+      To create a production bundle, use `npm run build` or `yarn build`.
+    -->
+  </body>
+</html>
--- a/public/logo192.png
+++ b/public/logo192.png
--- a/public/logo512.png
+++ b/public/logo512.png
--- a/public/manifest.json
+++ b/public/manifest.json
@@ -0,0 +1,25 @@
+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    },
+    {
+      "src": "logo192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    },
+    {
+      "src": "logo512.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}
--- a/public/robots.txt
+++ b/public/robots.txt
@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:
--- a/src/App.css
+++ b/src/App.css
@@ -0,0 +1,38 @@
+.App {
+  text-align: center;
+}
+
+.App-logo {
+  height: 40vmin;
+  pointer-events: none;
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  .App-logo {
+    animation: App-logo-spin infinite 20s linear;
+  }
+}
+
+.App-header {
+  background-color: #282c34;
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  font-size: calc(10px + 2vmin);
+  color: white;
+}
+
+.App-link {
+  color: #61dafb;
+}
+
+@keyframes App-logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}
--- a/src/App.test.tsx
+++ b/src/App.test.tsx
@@ -0,0 +1,9 @@
+import React from 'react';
+import { render, screen } from '@testing-library/react';
+import App from './App';
+
+test('renders learn react link', () => {
+  render(<App />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -0,0 +1,47 @@
+import { useEffect, useState } from 'react'
+import './App.css'
+import { Video } from './Video'
+import { start } from './lib/start'
+
+import { ArrowPathIcon } from '@heroicons/react/24/solid'
+
+function App() {
+  const [mediaStreams, setMediaStreams] = useState<MediaStream[]>([])
+  const [focusedIndex, setFocusedIndex] = useState<number>(-1)
+
+  useEffect(() => {
+    start()
+      .then((streams) => Promise.all(streams))
+      .then((streams) => {
+        setMediaStreams(streams)
+      })
+  }, [])
+
+  const handleClick = (index: number) => (e: React.MouseEvent<HTMLDivElement, MouseEvent>) => {
+    if (focusedIndex === index) {
+      setFocusedIndex(-1)
+    } else {
+      setFocusedIndex(index)
+    }
+  }
+
+  return (
+    <div>
+      <div className='grid grid-cols-3'>
+        {mediaStreams.map((stream, index) => (
+          <div key={`medistream-${index}`} onClick={handleClick(index)}>
+            <Video mediaStream={stream} index={index} focused={focusedIndex === index} />
+          </div>
+        ))}
+      </div>
+      <button
+        className={'absolute bg-white p-2 shadow-xl top-3 right-3 rounded-lg'}
+        onClick={() => window.location.reload()}
+      >
+        <ArrowPathIcon className='h-6 w-6 text-black' />
+      </button>
+    </div>
+  )
+}
+
+export default App
--- a/src/Video.tsx
+++ b/src/Video.tsx
@@ -0,0 +1,39 @@
+import React, { FC, useEffect, useRef } from 'react'
+
+export const Video: FC<{ mediaStream: MediaStream; index: number; focused: boolean }> = ({
+  mediaStream,
+  index,
+  focused,
+}) => {
+  const ref = useRef<HTMLVideoElement>(null)
+
+  useEffect(() => {
+    if (ref.current) {
+      ref.current.srcObject = mediaStream
+    }
+  }, [mediaStream])
+
+  const map = [
+    'origin-top-left',
+    'origin-top',
+    'origin-top-right',
+    'origin-left',
+    '',
+    'origin-right',
+    'origin-bottom-left',
+    'origin-bottom',
+    'origin-bottom-right',
+  ]
+
+  return (
+    <div className={`transition ${focused ? 'scale-200' : ''} ${map[index]}`}>
+      <video
+        ref={ref}
+        autoPlay
+        muted={!focused}
+        // controls={focused}
+        className={'aspect-video object-fill h-full w-full'}
+      />
+    </div>
+  )
+}
--- a/src/index.css
+++ b/src/index.css
@@ -0,0 +1,15 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans',
+    'Droid Sans', 'Helvetica Neue', sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New', monospace;
+}
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -0,0 +1,19 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+import reportWebVitals from './reportWebVitals';
+
+const root = ReactDOM.createRoot(
+  document.getElementById('root') as HTMLElement
+);
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);
+
+// If you want to start measuring performance in your app, pass a function
+// to log results (for example: reportWebVitals(console.log))
+// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
+reportWebVitals();
--- a/src/lib/connect.ts
+++ b/src/lib/connect.ts
@@ -0,0 +1,85 @@
+export async function PeerConnection(media: string) {
+  const pc = new RTCPeerConnection({
+    iceServers: [{ urls: 'stun:stun.l.google.com:19302' }],
+  })
+
+  const localTracks = []
+
+  if (/camera|microphone/.test(media)) {
+    const tracks = await getMediaTracks('user', {
+      video: media.indexOf('camera') >= 0,
+      audio: media.indexOf('microphone') >= 0,
+    })
+    tracks.forEach((track) => {
+      pc.addTransceiver(track, { direction: 'sendonly' })
+      if (track.kind === 'video') localTracks.push(track)
+    })
+  }
+
+  if (media.indexOf('display') >= 0) {
+    const tracks = await getMediaTracks('display', {
+      video: true,
+      audio: media.indexOf('speaker') >= 0,
+    })
+    tracks.forEach((track) => {
+      pc.addTransceiver(track, { direction: 'sendonly' })
+      if (track.kind === 'video') localTracks.push(track)
+    })
+  }
+
+  if (/video|audio/.test(media)) {
+    const tracks = ['video', 'audio']
+      .filter((kind) => media.indexOf(kind) >= 0)
+      .map((kind) => pc.addTransceiver(kind, { direction: 'recvonly' }).receiver.track)
+    localTracks.push(...tracks)
+  }
+
+  return { pc, localTracks }
+}
+
+export async function getMediaTracks(media: string, constraints?: MediaStreamConstraints) {
+  try {
+    const stream =
+      media === 'user'
+        ? await navigator.mediaDevices.getUserMedia(constraints)
+        : await navigator.mediaDevices.getDisplayMedia(constraints)
+    return stream.getTracks()
+  } catch (e) {
+    console.warn(e)
+    return []
+  }
+}
+
+export async function connect(url: string, media: string) {
+  const { pc, localTracks } = await PeerConnection(media)
+
+  // document.getElementById(videoId).srcObject = new MediaStream(localTracks)
+
+  const ws = new WebSocket('ws' + url.toString().substring(4))
+
+  ws.addEventListener('open', () => {
+    pc.addEventListener('icecandidate', (ev) => {
+      if (!ev.candidate) return
+      const msg = { type: 'webrtc/candidate', value: ev.candidate.candidate }
+      ws.send(JSON.stringify(msg))
+    })
+
+    pc.createOffer()
+      .then((offer) => pc.setLocalDescription(offer))
+      .then(() => {
+        const msg = { type: 'webrtc/offer', value: pc.localDescription?.sdp }
+        ws.send(JSON.stringify(msg))
+      })
+  })
+
+  ws.addEventListener('message', (ev) => {
+    const msg = JSON.parse(ev.data)
+    if (msg.type === 'webrtc/candidate') {
+      pc.addIceCandidate({ candidate: msg.value, sdpMid: '0' })
+    } else if (msg.type === 'webrtc/answer') {
+      pc.setRemoteDescription({ type: 'answer', sdp: msg.value })
+    }
+  })
+
+  return new MediaStream(localTracks)
+}
--- a/src/lib/start.ts
+++ b/src/lib/start.ts
@@ -0,0 +1,15 @@
+import { connect } from './connect'
+
+const baseUrl = 'http://10.10.0.64:1984/'
+
+export const start = async () => {
+  const test = await (await fetch('http://10.10.0.64:1984/api/streams')).json()
+  const streamNames = Object.keys(test)
+
+  const mediaStreams = streamNames.map((streamName) => {
+    const url = `${baseUrl}api/ws?src=${streamName}`
+    return connect(url, 'video+audio')
+  })
+
+  return mediaStreams
+}
--- a/src/lib/videoRtc.ts
+++ b/src/lib/videoRtc.ts
@@ -0,0 +1,637 @@
+/**
+ * Video player for go2rtc streaming application.
+ *
+ * All modern web technologies are supported in almost any browser except Apple Safari.
+ *
+ * Support:
+ * - RTCPeerConnection for Safari iOS 11.0+
+ * - IntersectionObserver for Safari iOS 12.2+
+ *
+ * Doesn't support:
+ * - MediaSource for Safari iOS all
+ * - Customized built-in elements (extends HTMLVideoElement) because all Safari
+ * - Public class fields because old Safari (before 14.0)
+ * - Autoplay for Safari
+ */
+
+export interface Message {
+  type: string
+  value: string
+}
+
+export class VideoRTC extends HTMLElement {
+  background: boolean
+  CODECS: string[]
+  connectTS: number
+  DISCONNECT_TIMEOUT: number
+  RECONNECT_TIMEOUT: number
+  disconnectTID?: NodeJS.Timeout
+  reconnectTID?: NodeJS.Timeout
+  mode: string
+  mseCodecs: string
+  ondata: ((eventData: ArrayBufferLike) => void) | null
+  onmessage: { [key: string]: (msg: Message) => void }
+  pc: RTCPeerConnection | null
+  pcConfig: RTCConfiguration & { iceServers: { urls: string }[]; sdpSemantics: string }
+  pcState: number
+  video: HTMLVideoElement | null
+  visibilityCheck: boolean
+  visibilityThreshold: number
+  ws: WebSocket | null
+  wsState: number
+  wsURL: string
+
+  constructor() {
+    super()
+
+    this.DISCONNECT_TIMEOUT = 5000
+    this.RECONNECT_TIMEOUT = 30000
+
+    this.CODECS = [
+      'avc1.640029', // H.264 high 4.1 (Chromecast 1st and 2nd Gen)
+      'avc1.64002A', // H.264 high 4.2 (Chromecast 3rd Gen)
+      'avc1.640033', // H.264 high 5.1 (Chromecast with Google TV)
+      'hvc1.1.6.L153.B0', // H.265 main 5.1 (Chromecast Ultra)
+      'mp4a.40.2', // AAC LC
+      'mp4a.40.5', // AAC HE
+      'opus', // OPUS Chrome
+    ]
+
+    /**
+     * [config] Supported modes (webrtc, mse, mp4, mjpeg).
+     * @type {string}
+     */
+    this.mode = 'webrtc,mse,mp4,mjpeg'
+
+    /**
+     * [config] Run stream when not displayed on the screen. Default `false`.
+     * @type {boolean}
+     */
+    this.background = false
+
+    /**
+     * [config] Run stream only when player in the viewport. Stop when user scroll out player.
+     * Value is percentage of visibility from `0` (not visible) to `1` (full visible).
+     * Default `0` - disable;
+     * @type {number}
+     */
+    this.visibilityThreshold = 0
+
+    /**
+     * [config] Run stream only when browser page on the screen. Stop when user change browser
+     * tab or minimise browser windows.
+     * @type {boolean}
+     */
+    this.visibilityCheck = true
+
+    /**
+     * [config] WebRTC configuration
+     * @type {RTCConfiguration}
+     */
+    this.pcConfig = {
+      iceServers: [{ urls: 'stun:stun.l.google.com:19302' }],
+      sdpSemantics: 'unified-plan', // important for Chromecast 1
+    }
+
+    /**
+     * [info] WebSocket connection state. Values: CONNECTING, OPEN, CLOSED
+     * @type {number}
+     */
+    this.wsState = WebSocket.CLOSED
+
+    /**
+     * [info] WebRTC connection state.
+     * @type {number}
+     */
+    this.pcState = WebSocket.CLOSED
+
+    /**
+     * @type {HTMLVideoElement}
+     */
+    this.video = null
+
+    /**
+     * @type {WebSocket}
+     */
+    this.ws = null
+
+    /**
+     * @type {string|URL}
+     */
+    this.wsURL = ''
+
+    /**
+     * @type {RTCPeerConnection}
+     */
+    this.pc = null
+
+    /**
+     * @type {number}
+     */
+    this.connectTS = 0
+
+    /**
+     * @type {string}
+     */
+    this.mseCodecs = ''
+
+    /**
+     * [internal] Disconnect TimeoutID.
+     * @type {number}
+     */
+    this.disconnectTID = undefined
+
+    /**
+     * [internal] Reconnect TimeoutID.
+     * @type {number}
+     */
+    this.reconnectTID = undefined
+
+    /**
+     * [internal] Handler for receiving Binary from WebSocket.
+     * @type {Function}
+     */
+    this.ondata = null
+
+    /**
+     * [internal] Handlers list for receiving JSON from WebSocket
+     * @type {Object.<string,Function>}}
+     */
+    this.onmessage = {}
+  }
+
+  /**
+   * Set video source (WebSocket URL). Support relative path.
+   * @param {string|URL} value
+   */
+  set src(value: string | URL) {
+    if (typeof value !== 'string') value = value.toString()
+    if (value.startsWith('http')) {
+      value = 'ws' + value.substring(4)
+    }
+
+    this.wsURL = value
+
+    this.onconnect()
+  }
+
+  /**
+   * Play video. Support automute when autoplay blocked.
+   * https://developer.chrome.com/blog/autoplay/
+   */
+  play() {
+    this.video?.play().catch((er) => {
+      if (er.name === 'NotAllowedError' && !this.video?.muted) {
+        if (this.video) this.video.muted = true
+        this.video?.play().catch(() => console.debug)
+      }
+    })
+  }
+
+  /**
+   * Send message to server via WebSocket
+   * @param {Object} value
+   */
+  send(value: string | object) {
+    if (this.ws) this.ws.send(JSON.stringify(value))
+  }
+
+  codecs(type: string) {
+    const test =
+      type === 'mse'
+        ? (codec: string) => MediaSource.isTypeSupported(`video/mp4; codecs="${codec}"`)
+        : (codec: string) => this.video?.canPlayType(`video/mp4; codecs="${codec}"`)
+    return this.CODECS.filter(test).join()
+  }
+
+  /**
+   * `CustomElement`. Invoked each time the custom element is appended into a
+   * document-connected element.
+   */
+  connectedCallback() {
+    if (this.disconnectTID) {
+      clearTimeout(this.disconnectTID)
+      this.disconnectTID = undefined
+    }
+
+    // because video autopause on disconnected from DOM
+    if (this.video) {
+      const seek = this.video.seekable
+      if (seek.length > 0) {
+        this.video.currentTime = seek.end(seek.length - 1)
+      }
+      this.play()
+    } else {
+      this.oninit()
+    }
+
+    this.onconnect()
+  }
+
+  /**
+   * `CustomElement`. Invoked each time the custom element is disconnected from the
+   * document's DOM.
+   */
+  disconnectedCallback() {
+    if (this.background || this.disconnectTID) return
+    if (this.wsState === WebSocket.CLOSED && this.pcState === WebSocket.CLOSED) return
+
+    this.disconnectTID = setTimeout(() => {
+      if (this.reconnectTID) {
+        clearTimeout(this.reconnectTID)
+        this.reconnectTID = undefined
+      }
+
+      this.disconnectTID = undefined
+
+      this.ondisconnect()
+    }, this.DISCONNECT_TIMEOUT)
+  }
+
+  /**
+   * Creates child DOM elements. Called automatically once on `connectedCallback`.
+   */
+  oninit() {
+    this.video = document.createElement('video')
+    this.video.controls = true
+    this.video.playsInline = true
+    this.video.preload = 'auto'
+
+    this.video.style.display = 'block' // fix bottom margin 4px
+    this.video.style.width = '100%'
+    this.video.style.height = '100%'
+
+    this.appendChild(this.video)
+
+    if (this.background) return
+
+    if ('hidden' in document && this.visibilityCheck) {
+      document.addEventListener('visibilitychange', () => {
+        if (document.hidden) {
+          this.disconnectedCallback()
+        } else if (this.isConnected) {
+          this.connectedCallback()
+        }
+      })
+    }
+
+    if ('IntersectionObserver' in window && this.visibilityThreshold) {
+      const observer = new IntersectionObserver(
+        (entries) => {
+          entries.forEach((entry) => {
+            if (!entry.isIntersecting) {
+              this.disconnectedCallback()
+            } else if (this.isConnected) {
+              this.connectedCallback()
+            }
+          })
+        },
+        { threshold: this.visibilityThreshold }
+      )
+      observer.observe(this)
+    }
+  }
+
+  /**
+   * Connect to WebSocket. Called automatically on `connectedCallback`.
+   * @return {boolean} true if the connection has started.
+   */
+  onconnect() {
+    if (!this.isConnected || !this.wsURL || this.ws || this.pc) return false
+
+    // CLOSED or CONNECTING => CONNECTING
+    this.wsState = WebSocket.CONNECTING
+
+    this.connectTS = Date.now()
+
+    this.ws = new WebSocket(this.wsURL)
+    this.ws.binaryType = 'arraybuffer'
+    this.ws.addEventListener('open', (ev) => this.onopen())
+    this.ws.addEventListener('close', (ev) => this.onclose())
+
+    return true
+  }
+
+  ondisconnect() {
+    this.wsState = WebSocket.CLOSED
+    if (this.ws) {
+      this.ws.close()
+      this.ws = null
+    }
+
+    this.pcState = WebSocket.CLOSED
+    if (this.pc) {
+      this.pc.close()
+      this.pc = null
+    }
+  }
+
+  /**
+   * @returns {Array.<string>} of modes (mse, webrtc, etc.)
+   */
+  onopen() {
+    // CONNECTING => OPEN
+    this.wsState = WebSocket.OPEN
+
+    this.ws?.addEventListener('message', (ev) => {
+      if (typeof ev.data === 'string') {
+        const msg = JSON.parse(ev.data)
+        for (const mode in this.onmessage) {
+          this.onmessage[mode](msg)
+        }
+      } else {
+        this.ondata?.(ev.data)
+      }
+    })
+
+    this.ondata = null
+    this.onmessage = {}
+
+    const modes: string[] = []
+
+    if (this.mode.indexOf('mse') >= 0 && 'MediaSource' in window) {
+      // iPhone
+      modes.push('mse')
+      this.onmse()
+    } else if (this.mode.indexOf('mp4') >= 0) {
+      modes.push('mp4')
+      this.onmp4()
+    }
+
+    if (this.mode.indexOf('webrtc') >= 0 && 'RTCPeerConnection' in window) {
+      // macOS Desktop app
+      modes.push('webrtc')
+      this.onwebrtc()
+    }
+
+    if (this.mode.indexOf('mjpeg') >= 0) {
+      if (modes.length) {
+        this.onmessage['mjpeg'] = (msg) => {
+          if (msg.type !== 'error' || msg.value.indexOf(modes[0]) !== 0) return
+          this.onmjpeg()
+        }
+      } else {
+        modes.push('mjpeg')
+        this.onmjpeg()
+      }
+    }
+
+    return modes
+  }
+
+  /**
+   * @return {boolean} true if reconnection has started.
+   */
+  // @ts-expect-error
+  onclose() {
+    if (this.wsState === WebSocket.CLOSED) return false
+
+    // CONNECTING, OPEN => CONNECTING
+    this.wsState = WebSocket.CONNECTING
+    this.ws = null
+
+    // reconnect no more than once every X seconds
+    const delay = Math.max(this.RECONNECT_TIMEOUT - (Date.now() - this.connectTS), 0)
+
+    this.reconnectTID = setTimeout(() => {
+      this.reconnectTID = undefined
+      this.onconnect()
+    }, delay)
+
+    return true
+  }
+
+  onmse() {
+    const ms = new MediaSource()
+    ms.addEventListener(
+      'sourceopen',
+      () => {
+        this.video && URL.revokeObjectURL(this.video.src)
+        this.send({ type: 'mse', value: this.codecs('mse') })
+      },
+      { once: true }
+    )
+
+    if (this.video) {
+      this.video.src = URL.createObjectURL(ms)
+      this.video.srcObject = null
+    }
+
+    this.play()
+
+    this.mseCodecs = ''
+
+    this.onmessage['mse'] = (msg) => {
+      if (msg.type !== 'mse') return
+
+      this.mseCodecs = msg.value
+
+      const sb = ms.addSourceBuffer(msg.value)
+      sb.mode = 'segments' // segments or sequence
+      sb.addEventListener('updateend', () => {
+        if (sb.updating) return
+
+        try {
+          if (bufLen > 0) {
+            const data = buf.slice(0, bufLen)
+            bufLen = 0
+            sb.appendBuffer(data)
+          } else if (sb.buffered && sb.buffered.length) {
+            const end = sb.buffered.end(sb.buffered.length - 1) - 15
+            const start = sb.buffered.start(0)
+            if (end > start) {
+              sb.remove(start, end)
+              ms.setLiveSeekableRange(end, end + 15)
+            }
+            // console.debug("VideoRTC.buffered", start, end);
+          }
+        } catch (e) {
+          // console.debug(e);
+        }
+      })
+
+      const buf = new Uint8Array(2 * 1024 * 1024)
+      let bufLen = 0
+
+      this.ondata = (data) => {
+        if (sb.updating || bufLen > 0) {
+          const b = new Uint8Array(data)
+          buf.set(b, bufLen)
+          bufLen += b.byteLength
+          // console.debug("VideoRTC.buffer", b.byteLength, bufLen);
+        } else {
+          try {
+            sb.appendBuffer(data)
+          } catch (e) {
+            // console.debug(e);
+          }
+        }
+      }
+    }
+  }
+
+  onwebrtc() {
+    const pc = new RTCPeerConnection(this.pcConfig)
+
+    /** @type {HTMLVideoElement} */
+    const video2 = document.createElement('video')
+    video2.addEventListener('loadeddata', (ev) => this.onpcvideo(ev), { once: true })
+
+    pc.addEventListener('icecandidate', (ev) => {
+      const candidate = ev.candidate ? ev.candidate.toJSON().candidate : ''
+      this.send({ type: 'webrtc/candidate', value: candidate })
+    })
+
+    pc.addEventListener('track', (ev) => {
+      // when stream already init
+      if (video2.srcObject !== null) return
+
+      // when audio track not exist in Chrome
+      if (ev.streams.length === 0) return
+
+      // when audio track not exist in Firefox
+      if (ev.streams[0].id[0] === '{') return
+
+      video2.srcObject = ev.streams[0]
+    })
+
+    pc.addEventListener('connectionstatechange', () => {
+      if (pc.connectionState === 'failed' || pc.connectionState === 'disconnected') {
+        pc.close() // stop next events
+
+        this.pcState = WebSocket.CLOSED
+        this.pc = null
+
+        this.onconnect()
+      }
+    })
+
+    this.onmessage['webrtc'] = (msg) => {
+      switch (msg.type) {
+        case 'webrtc/candidate':
+          pc.addIceCandidate({
+            candidate: msg.value,
+            sdpMid: '0',
+          }).catch(() => console.debug)
+          break
+        case 'webrtc/answer':
+          pc.setRemoteDescription({
+            type: 'answer',
+            sdp: msg.value,
+          }).catch(() => console.debug)
+          break
+        case 'error':
+          if (msg.value.indexOf('webrtc/offer') < 0) return
+          pc.close()
+      }
+    }
+
+    // Safari doesn't support "offerToReceiveVideo"
+    pc.addTransceiver('video', { direction: 'recvonly' })
+    pc.addTransceiver('audio', { direction: 'recvonly' })
+
+    pc.createOffer().then((offer) => {
+      pc.setLocalDescription(offer).then(() => {
+        this.send({ type: 'webrtc/offer', value: offer.sdp })
+      })
+    })
+
+    this.pcState = WebSocket.CONNECTING
+    this.pc = pc
+  }
+
+  /**
+   * @param ev {Event}
+   */
+  onpcvideo(ev: Event) {
+    if (!this.pc) return
+
+    /** @type {HTMLVideoElement} */
+    const video2 = ev.target as HTMLVideoElement | null
+    const state = this.pc.connectionState
+
+    // Firefox doesn't support pc.connectionState
+    if (state === 'connected' || state === 'connecting' || !state) {
+      // Video+Audio > Video, H265 > H264, Video > Audio, WebRTC > MSE
+      let rtcPriority = 0,
+        msePriority = 0
+
+      /** @type {MediaStream} */
+      const ms = video2?.srcObject as MediaStream | null
+      if (ms && ms.getVideoTracks().length > 0) rtcPriority += 0x220
+      if (ms && ms.getAudioTracks().length > 0) rtcPriority += 0x102
+
+      if (this.mseCodecs.indexOf('hvc1.') >= 0) msePriority += 0x230
+      if (this.mseCodecs.indexOf('avc1.') >= 0) msePriority += 0x210
+      if (this.mseCodecs.indexOf('mp4a.') >= 0) msePriority += 0x101
+
+      if (rtcPriority >= msePriority) {
+        this.video && (this.video.srcObject = ms)
+        this.play()
+
+        this.pcState = WebSocket.OPEN
+
+        this.wsState = WebSocket.CLOSED
+        this.ws?.close()
+        this.ws = null
+      } else {
+        this.pcState = WebSocket.CLOSED
+        this.pc.close()
+        this.pc = null
+      }
+    }
+
+    video2?.srcObject && (video2.srcObject = null)
+  }
+
+  onmjpeg() {
+    this.ondata = (data) => {
+      this.video && (this.video.controls = false)
+      this.video && (this.video.poster = 'data:image/jpeg;base64,' + VideoRTC.btoa(data))
+    }
+
+    this.send({ type: 'mjpeg' })
+  }
+
+  onmp4() {
+    /** @type {HTMLCanvasElement} **/
+    const canvas = document.createElement('canvas')
+    /** @type {CanvasRenderingContext2D} */
+    let context: CanvasRenderingContext2D | null
+
+    /** @type {HTMLVideoElement} */
+    const video2 = document.createElement('video')
+    video2.autoplay = true
+    video2.playsInline = true
+    video2.muted = true
+
+    video2.addEventListener('loadeddata', (ev) => {
+      if (!context) {
+        canvas.width = video2.videoWidth
+        canvas.height = video2.videoHeight
+        context = canvas.getContext('2d')
+      }
+
+      context?.drawImage(video2, 0, 0, canvas.width, canvas.height)
+
+      this.video && (this.video.controls = false)
+      this.video && (this.video.poster = canvas.toDataURL('image/jpeg'))
+    })
+
+    this.ondata = (data) => {
+      video2.src = 'data:video/mp4;base64,' + VideoRTC.btoa(data)
+    }
+
+    this.send({ type: 'mp4', value: this.codecs('mp4') })
+  }
+
+  static btoa(buffer: ArrayBufferLike) {
+    const bytes = new Uint8Array(buffer)
+    const len = bytes.byteLength
+    let binary = ''
+    for (let i = 0; i < len; i++) {
+      binary += String.fromCharCode(bytes[i])
+    }
+    return window.btoa(binary)
+  }
+}
--- a/src/lib/videoStream.ts
+++ b/src/lib/videoStream.ts
@@ -0,0 +1,59 @@
+import { Message, VideoRTC } from './videoRtc.js'
+
+class VideoStream extends VideoRTC {
+  /**
+   * Custom GUI
+   */
+  oninit() {
+    console.debug('stream.oninit')
+    super.oninit()
+  }
+
+  onconnect() {
+    console.debug('stream.onconnect')
+    const result = super.onconnect()
+    if (result) console.log('loading')
+    return result
+  }
+
+  ondisconnect() {
+    console.debug('stream.ondisconnect')
+    super.ondisconnect()
+  }
+
+  onopen() {
+    console.debug('stream.onopen')
+    const result = super.onopen()
+
+    this.onmessage['stream'] = (msg: Message) => {
+      console.debug('stream.onmessge', msg)
+      switch (msg.type) {
+        case 'error':
+          console.log('Error', msg.value)
+          break
+        case 'mse':
+        case 'mp4':
+        case 'mjpeg':
+          console.log('Type', msg.type.toUpperCase())
+          break
+      }
+    }
+
+    return result
+  }
+
+  onclose = () => {
+    console.debug('stream.onclose')
+    return super.onclose()
+  }
+
+  onpcvideo(ev: RTCPeerConnectionIceEvent) {
+    super.onpcvideo(ev)
+
+    if (this.pcState !== WebSocket.CLOSED) {
+      console.log('RTC')
+    }
+  }
+}
+
+customElements.define('video-stream', VideoStream)
--- a/src/logo.svg
+++ b/src/logo.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3"><g fill="#61DAFB"><path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/><circle cx="420.9" cy="296.5" r="45.7"/><path d="M520.5 78.1z"/></g></svg>
--- a/src/react-app-env.d.ts
+++ b/src/react-app-env.d.ts
@@ -0,0 +1 @@
+/// <reference types="react-scripts" />
--- a/src/reportWebVitals.ts
+++ b/src/reportWebVitals.ts
@@ -0,0 +1,15 @@
+import { ReportHandler } from 'web-vitals';
+
+const reportWebVitals = (onPerfEntry?: ReportHandler) => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;
--- a/src/setupTests.ts
+++ b/src/setupTests.ts
@@ -0,0 +1,5 @@
+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom';
--- a/tailwind.config.js
+++ b/tailwind.config.js
@@ -0,0 +1,16 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: ['./src/**/*.{js,jsx,ts,tsx}'],
+  theme: {
+    extend: {
+      animation: {
+        wiggle: 'wiggle 1s ease-in-out infinite',
+        'spin-slow': 'spin 3s linear infinite',
+      },
+      scale: {
+        200: '2.00',
+      },
+    },
+  },
+  plugins: [],
+}
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -0,0 +1,26 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "lib": [
+      "dom",
+      "dom.iterable",
+      "esnext"
+    ],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "noFallthroughCasesInSwitch": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react-jsx"
+  },
+  "include": [
+    "src"
+  ]
+}
--- a/yarn.lock
+++ b/yarn.lock
				`@@ -0,0 +1 @@`
				<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3"><g fill="#61DAFB"><path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/><circle cx="420.9" cy="296.5" r="45.7"/><path d="M520.5 78.1z"/></g></svg>