-
-
Save somebody1234/bd437d7d671c869551141ef968d09ad5 to your computer and use it in GitHub Desktop.
[chrome][android] BarcodeDetector example
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!doctype html> | |
| <html> | |
| <head> | |
| <script type="module"> | |
| // WICG Shape Detection API | |
| // - https://wicg.github.io/shape-detection-api/ | |
| try { | |
| const start = document.getElementById("start"); | |
| const video = document.getElementById("video"); | |
| const result = document.getElementById("result"); | |
| const bd = new BarcodeDetector(); | |
| (async () => { | |
| // It works on chrome on Android | |
| //NOTE: Not implemented yet: chrome canary 84 on macos | |
| result.textContent = (await BarcodeDetector.getSupportedFormats()).join("\n"); | |
| })().catch(err => { | |
| document.getElementById("error").textContent += err; | |
| }); | |
| const capture = async () => { | |
| try { | |
| const barcodes = await bd.detect(video); | |
| const log = barcodes.map(({format, rawValue}) => `- ${format}: ${rawValue}`).join("\n"); | |
| if (log) result.textContent = log; | |
| requestAnimationFrame(capture); | |
| } catch (err) { | |
| document.getElementById("error").textContent += err; | |
| } | |
| }; | |
| video.addEventListener("play", () => capture()); | |
| start.addEventListener("click", () => { | |
| start.disabled = true; | |
| (async () => { | |
| const media = await navigator.mediaDevices.getUserMedia( | |
| {auido: false, video: { | |
| //NOTE: crash on android chrome when specified the size | |
| //width: {ideal: 800}, height: {ideal: 800}, | |
| facingMode: "environment"}}); | |
| //console.log(media); | |
| video.srcObject = media; | |
| video.autoplay = true; | |
| })().catch(err => document.getElementById("error").textContent += err); | |
| }, {once: true}); | |
| } catch (err) { | |
| document.getElementById("error").textContent += err; | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| BarcodeDetector demo: <button id="start">start</button> | |
| <div><video id="video" autoplay></div> | |
| <pre id="result"></pre> | |
| <pre id="error" style="color:red"></pre> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
https://gist.githack.com/somebody1234/bd437d7d671c869551141ef968d09ad5/raw/index.html