Publish Vulpes Preview 15 sources for desktop, Android and Tundra

Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.

host/camera.js

@@ -0,0 +1,55 @@
+addEventListener(
+  'DOMContentLoaded',
+  () => {
+    'use strict';
+    const options = window.arguments[0];
+    let stream,
+      completed = false,
+      closed = false;
+    const status = document.getElementById('status'),
+      capture = document.getElementById('capture'),
+      video = document.getElementById('preview');
+    const stop = () => stream?.getTracks().forEach((track) => track.stop());
+    addEventListener('unload', () => {
+      closed = true;
+      stop();
+      if (!completed) options.cancel();
+    });
+    document.getElementById('cancel').onclick = () => window.close();
+    capture.onclick = async () => {
+      capture.disabled = true;
+      try {
+        const canvas = document.createElementNS('http://www.w3.org/1999/xhtml', 'canvas');
+        canvas.width = video.videoWidth;
+        canvas.height = video.videoHeight;
+        canvas.getContext('2d').drawImage(video, 0, 0);
+        const blob = await new Promise((resolve) => canvas.toBlob(resolve, 'image/jpeg', 0.9));
+        if (!blob) throw Error('Capture failed');
+        await options.finish(blob);
+        completed = true;
+        stop();
+        window.close();
+      } catch (e) {
+        status.textContent = String(e);
+        capture.disabled = false;
+      }
+    };
+    (async () => {
+      try {
+        stream = await navigator.mediaDevices.getUserMedia({ video: true, audio: false });
+        if (closed) {
+          stop();
+          return;
+        }
+        video.srcObject = stream;
+        await video.play();
+        capture.disabled = false;
+        status.textContent = 'La webcam est active. / Webcam is active.';
+      } catch (e) {
+        stop();
+        status.textContent = 'Webcam indisponible / Webcam unavailable: ' + e.name;
+      }
+    })();
+  },
+  { once: true },
+);