Fix routing.

.gitmodules

@@ -0,0 +1,9 @@
+[submodule "external/LZMA-JS"]
+	path = external/LZMA-JS
+	url = https://github.com/LZMA-JS/LZMA-JS.git
+[submodule "external/base64.js"]
+	path = external/base64.js
+	url = https://gist.github.com/72c423f727d395eeaa09697058238727.git
+[submodule "external/qr-scanner"]
+	path = external/qr-scanner
+	url = https://github.com/nimiq/qr-scanner.git

camera/routing.py

@@ -4,5 +4,5 @@ from . import consumers
 
 websocket_urlpatterns = [
     re_path(r'camera/ws/(?P<kind>host|client)/(?P<room_name>\w+)/$',
-            consumers.VideoConsumer),
+            consumers.VideoConsumer.as_asgi()),
 ]

camera/static/js/base64.js

@@ -0,0 +1 @@
+../../../external/base64.js/base64.js

camera/static/js/lzma_worker.js

@@ -0,0 +1 @@
+../../../external/LZMA-JS/src/lzma_worker.js

camera/static/js/prefix

@@ -0,0 +1,175 @@
+{"description":{"type":"answer","sdp":"v=0
+o=- 0 2 IN IP4 127.0.0.1
+s=-
+t=0 0
+a=group:BUNDLE 0
+a=msid-semantic: WMS
+m=audio 9 UDP/TLS/RTP/SAVPF 109 9 0 8 101
+c=IN IP4 0.0.0.0
+a=rtcp:9 IN IP4 0.0.0.0
+a=candidate:0 1 udp 0 a.local 0 typ host generation 0 network-cost 999
+a=ice-ufrag:
+a=ice-pwd:
+a=ice-options:trickle
+a=fingerprint:sha-256 000:01:12:23:34:45:56:67:78:89:9A:AB:BC:CD:DE:EF:F0:02:03:04:05:06:07:08:09:0A:0B:0C:0D:0E:0F
+a=setup:active
+a=mid:0
+a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
+a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:mid
+a=recvonly
+a=rtcp-mux
+a=rtpmap:109 opus/48000/2
+a=fmtp:109 minptime=10;useinbandfec=1
+a=rtpmap:9 G722/8000
+a=rtpmap:0 PCMU/8000
+a=rtpmap:8 PCMA/8000
+a=rtpmap:101 telephone-event/8000
+"}}
+{"description":{"type":"offer","sdp":"v=0
+o=mozilla...THIS_IS_SDPARTA-68.8.1 0 0 IN IP4 0.0.0.0
+s=-
+t=0 0
+a=sendrecv
+a=fingerprint:sha-256 0:10:11:12:13:14:15:16:17:18:19:1A:1B:1C:1D:1E:1F:20:21:22:23:24:25:26:27:28:29:2A:2B:2C:2D
+a=group:BUNDLE 0
+a=ice-options:trickle
+a=msid-semantic:WMS *
+m=audio 40000 UDP/TLS/RTP/SAVPF 109 9 0 8 101
+c=IN IP4 192.168.0.0
+a=candidate:0 1 UDP 2100000000 192.168.0.0 40000 typ host
+a=candidate:1 1 UDP 2100000000 ::1 40000 typ host
+a=candidate:2 1 TCP 2100000000 192.168.0.0 40000 typ host tcptype passive
+a=candidate:2 1 TCP 2100000000 192.168.0.0 9 typ host tcptype active
+a=candidate:3 1 TCP 2100000000 ::1 40000 typ host tcptype passive
+a=candidate:3 1 TCP 2100000000 ::1 9 typ host tcptype active
+a=candidate:0 2 UDP 2100000000 192.168.0.0 40000 typ host
+a=candidate:1 2 UDP 2100000000 ::1 40000 typ host
+a=candidate:2 2 TCP 2100000000 192.168.0.0 40000 typ host tcptype passive
+a=candidate:2 2 TCP 2100000000 192.168.0.0 9 typ host tcptype active
+a=candidate:3 2 TCP 2100000000 ::1 40000 typ host tcptype passive
+a=candidate:3 2 TCP 2100000000 ::1 9 typ host tcptype active
+a=sendrecv
+a=end-of-candidates
+a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
+a=extmap:2/recvonly urn:ietf:params:rtp-hdrext:csrc-audio-level
+a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:mid
+a=fmtp:109 maxplaybackrate=48000;stereo=1;useinbandfec=1
+a=fmtp:101 0-15
+a=ice-pwd:
+a=ice-ufrag:
+a=mid:0
+a=msid:{}
+a=rtcp:40000 IN IP4 192.168.0.0
+a=rtcp-mux
+a=rtpmap:109 opus/48000/2
+a=rtpmap:9 G722/8000/1
+a=rtpmap:0 PCMU/8000
+a=rtpmap:8 PCMA/8000
+a=rtpmap:101 telephone-event/8000
+a=setup:actpass
+a=ssrc:0 cname:{}
+"}}
+{"description":{"type":"answer","sdp":"v=0
+o=- 0 2 IN IP4 127.0.0.1
+s=-
+t=0 0
+a=group:BUNDLE 0
+a=msid-semantic: WMS
+m=video 9 UDP/TLS/RTP/SAVPF 120 121
+c=IN IP4 0.0.0.0
+a=rtcp:9 IN IP4 0.0.0.0
+a=candidate:0 1 udp 2100000000 abc.local 40000 typ host generation 0 network-cost 999
+a=ice-ufrag:
+a=ice-pwd:
+a=ice-options:trickle
+a=fingerprint:sha-256 0:2E:2F:30:31:32:33:34:35:36:37:38:39:3A:3B:3C:3D:3E:3F:40:41:42:43:44:45:46:47:48:49:4A:4B
+a=setup:active
+a=mid:0
+a=extmap:5 urn:ietf:params:rtp-hdrext:toffset
+a=extmap:4 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
+a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:mid
+a=recvonly
+a=rtcp-mux
+a=rtpmap:120 VP8/90000
+a=rtcp-fb:120 goog-remb
+a=rtcp-fb:120 ccm fir
+a=rtcp-fb:120 nack
+a=rtcp-fb:120 nack pli
+a=rtpmap:121 VP9/90000
+a=rtcp-fb:121 goog-remb
+a=rtcp-fb:121 ccm fir
+a=rtcp-fb:121 nack
+a=rtcp-fb:121 nack pli
+a=fmtp:121 profile-id=0
+"}}
+{"description":{"type":"offer","sdp":"v=0
+o=mozilla...THIS_IS_SDPARTA-68.8.1 0 0 IN IP4 0.0.0.0
+s=-
+t=0 0
+a=sendrecv
+a=fingerprint:sha-256 0:4C:4D:4E:4F:50:51:52:53:54:55:56:57:58:59:5A:5B:5C:5D:5E:5F:60:61:62:63:64:65:66:67:68:69
+a=group:BUNDLE 0
+a=ice-options:trickle
+a=msid-semantic:WMS *
+m=video 40000 UDP/TLS/RTP/SAVPF 120 121
+c=IN IP4 192.168.0.0
+a=candidate:0 1 UDP 2100000000 192.168.0.0 40000 typ host
+a=candidate:1 1 UDP 2100000000 ::1 40000 typ host
+a=candidate:2 1 TCP 2100000000 192.168.0.0 40000 typ host tcptype passive
+a=candidate:2 1 TCP 2100000000 192.168.0.0 9 typ host tcptype active
+a=candidate:3 1 TCP 2100000000 ::1 40000 typ host tcptype passive
+a=candidate:3 1 TCP 2100000000 ::1 9 typ host tcptype active
+a=candidate:0 2 UDP 2100000000 192.168.0.0 40000 typ host
+a=candidate:1 2 UDP 2100000000 ::1 40000 typ host
+a=candidate:2 2 TCP 2100000000 192.168.0.0 40000 typ host tcptype passive
+a=candidate:2 2 TCP 2100000000 192.168.0.0 9 typ host tcptype active
+a=candidate:3 2 TCP 2100000000 ::1 40000 typ host tcptype passive
+a=candidate:3 2 TCP 2100000000 ::1 9 typ host tcptype active
+a=sendrecv
+a=end-of-candidates
+a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:mid
+a=extmap:4 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
+a=extmap:5 urn:ietf:params:rtp-hdrext:toffset
+a=fmtp:120 max-fs=12288;max-fr=60
+a=fmtp:121 max-fs=12288;max-fr=60
+a=ice-pwd:
+a=ice-ufrag:
+a=mid:0
+a=msid:{}
+a=rtcp:40000 IN IP4 192.168.0.0
+a=rtcp-fb:120 nack
+a=rtcp-fb:120 nack pli
+a=rtcp-fb:120 ccm fir
+a=rtcp-fb:120 goog-remb
+a=rtcp-fb:121 nack
+a=rtcp-fb:121 nack pli
+a=rtcp-fb:121 ccm fir
+a=rtcp-fb:121 goog-remb
+a=rtcp-mux
+a=rtpmap:120 VP8/90000
+a=rtpmap:121 VP9/90000
+a=setup:actpass
+a=ssrc:0 cname:{}
+"}}
+{"description":{"type":"offer","sdp":"v=0
+o=mozilla...THIS_IS_SDPARTA-75.0 0 0 IN IP4 0.0.0.0
+s=-
+t=0 0
+a=sendrecv
+a=fingerprint:sha-256 6A:6B:6C:6D:6E:6F:70:71:72:73:74:75:76:77:78:79:7A:7B:7C:7D:7E:7F:80:81:82:83:84:85:86:87:88:89
+a=group:BUNDLE 0
+a=ice-options:trickle
+a=msid-semantic:WMS *
+m=application 9 UDP/DTLS/SCTP webrtc-datachannel
+c=IN IP4 0.0.0.0
+a=candidate:0 1 UDP 2100000000 0.local 40000 typ host
+a=candidate:1 1 TCP 2100000000 0.local 9 typ host tcptype active
+a=sendrecv
+a=end-of-candidates
+a=ice-pwd:
+a=ice-ufrag:
+a=mid:0
+a=setup:actpass
+a=sctp-port:5000
+a=max-message-size:
+"}}

camera/static/js/prefixCompressor.js

@@ -0,0 +1,47 @@
+async function loadLZMAPrefixCompressor(prefixFilename) {
+  class PrefixCompressor {
+    constructor(prefix, compress, decompress, bytesToIgnore) {
+      this.prefix = prefix;
+      this.prefixCompressed = compress(prefix);
+      this.bytesToIgnore = bytesToIgnore;
+      this.baseCompress = compress;
+      this.baseDecompress = decompress;
+    }
+
+    compress(str) {
+      const c = this.baseCompress(this.prefix + str);
+      for (var i = this.bytesToIgnore;
+           i < this.prefixCompressed.length
+             && this.prefixCompressed[i] == c[i];
+           i++) { }
+      const omittedBytes = this.prefixCompressed.length - i;
+      const res = c.subarray(i - 1);
+      res[0] = omittedBytes;
+      return res;
+    }
+
+    decompress(arr) {
+      const omittedBytes = arr[0];
+      const prefixBytes = this.prefixCompressed.length-omittedBytes;
+      const c = new Uint8Array(prefixBytes + arr.length-1);
+      c.set(this.prefixCompressed.subarray(0, prefixBytes));
+      c.set(arr.subarray(1), prefixBytes);
+      const d = this.baseDecompress(c);
+      return d.substring(this.prefix.length);
+    }
+  }
+  async function loadDictionary() {
+    const response = await fetch(prefixFilename);
+    return await response.text();
+  }
+  const prefix = await loadDictionary();
+
+  return new PrefixCompressor(prefix, str => {
+    const res = new Uint8Array(LZMA.compress(str, 9));
+    // Clear uncompressed size as it will be invalid.
+    for (var i = 5; i < 13; i++) res[i] = 255;
+    return res;
+  }, arr => {
+    return LZMA.decompress(arr).toString();
+  }, 12);
+}

camera/static/js/qr-scanner-worker.min.js

@@ -0,0 +1 @@
+../../../external/qr-scanner-binaryData/qr-scanner-worker.min.js

camera/static/js/qr-scanner-worker.min.js.map

@@ -0,0 +1 @@
+../../../external/qr-scanner/qr-scanner-worker.min.js.map

camera/static/js/qr-scanner.min.js

@@ -0,0 +1 @@
+../../../external/qr-scanner/qr-scanner.min.js

camera/static/js/qr-scanner.min.js.map

@@ -0,0 +1 @@
+../../../external/qr-scanner/qr-scanner.min.js.map

camera/static/js/qrcodegen.js

@@ -0,0 +1 @@
+../../../external/qr-code-generator/qrcodegen.js

camera/templates/index.html

@@ -3,18 +3,23 @@
   <head>
     <meta charset="utf-8"/>
     <title>Minimal WebRTC</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1">
     <style>
 body.justVideo {
   margin: 0;
   overflow: hidden;
 }
-#qrcodelink {
+body.justVideo #status, body.justVideo form {
+  display: none;
+}
+.qrcontainer {
   position: sticky;
   top: 0;
   right: 0;
   float: right;
 }
-#qrcode {
+.qrcontainer svg path {
+  min-width: 30vw;
   max-width: 100vw;
   max-height: 50vh;
 }
@@ -51,17 +56,37 @@ form label {
   background: lightyellow;
 }
     </style>
+    <script type="text/javascript" src="static/js/qrcodegen.js"></script>
+    <script type="text/javascript" src="static/js/lzma_worker.js"></script>
+    <script type="text/javascript" src="static/js/prefixCompressor.js"></script>
   </head>
   <body>
-    <a id="qrcodelink" style="display:none;"><img id="qrcode" /></a>
+    <a class="qrcontainer" id="qrcodelink" style="display:none;">
+      <svg xmlns="http://www.w3.org/2000/svg" id="qrcode" style="width:20em; height:20em;" stroke="none">
+        <rect width="100%" height="100%" fill="#FFFFFF"/>
+        <path d="" fill="#000000"/>
+      </svg>
+    </a>
+    <div class="qrcontainer" id="qrcodeObjContainer" style="display:none;">
+      <svg xmlns="http://www.w3.org/2000/svg" id="qrcodeObj" style="width:20em; height:20em;" stroke="none">
+        <rect width="100%" height="100%" fill="#FFFFFF"/>
+        <path d="" fill="#000000"/>
+      </svg> <br/>
+      <textarea id="localOffer" readonly></textarea>
+      <button id="copyLocalOffer">Copy</button>
+    </div>
     <form name="settings">
+      <label>
+        Serverless mode:
+        <input name="serverless" type="checkbox" value="true" />
+      </label>
       <label>
         Recieve remote video:
         <select name="client-video">
           <option value="none">none</option>
+          <option value="true">any camera</option>
           <option value="environment" selected>rear camera</option>
           <option value="user">front camera</option>
-          <option value="true" selected>any camera</option>
           <option value="screen">screen share</option>
         </select>
       </label>
@@ -74,6 +99,8 @@ form label {
         <select name="host-video">
           <option value="none" selected>none</option>
           <option value="true">any camera</option>
+          <option value="environment">rear camera</option>
+          <option value="user">front camera</option>
           <option value="screen">screen share</option>
         </select>
       </label>
@@ -81,6 +108,17 @@ form label {
         Transmit audio:
         <input name="host-audio" type="checkbox" value="true" />
       </label>
+      <label>
+        Debug mode (show log even after starting video):
+        <input name="debug" type="checkbox" value="true" />
+      </label>
+    </form>
+    <form id="serverlessOffer" style="display: none;" onsubmit="return false;">
+      <label>
+        Paste offer here:
+        <textarea name="remoteOffer"></textarea>
+        <button id="remoteOfferScan">Scan QR code</button>
+      </label>
     </form>
     <div id="status"></div>
     <div id="videos">
@@ -88,19 +126,42 @@ form label {
       <button id="start" style="display:none;">Start Streaming</button>
       <video id="remoteView" width="100%" autoplay muted style="display:none;"></video>
       <video id="selfView" width="200" height="150" autoplay muted style="display:none;"></video>
+      <video id="qrscan" width="100%" autoplay muted style="display:none;"></video>
     </div>
-    <script >
+    <script type="module" >
+    import * as b64 from "./static/js/base64.js";
+    import QrScanner from "./static/js/qr-scanner.min.js";
+    QrScanner.WORKER_PATH = "./static/js/qr-scanner-worker.min.js"
+
+    async function initialize() {
       const create = (container, type) => container.appendChild(document.createElement(type));
+      const QRGen = qrcodegen.QrCode;
+
+      var compressor = null;
+      async function getCompressor() {
+        if (compressor == null) {
+          compressor = await loadLZMAPrefixCompressor('static/js/prefix');
+        }
+        return compressor;
+      }
 
       const body = document.querySelector("body");
       const out = document.getElementById("status");
       const qrcode = document.getElementById("qrcode");
       const qrcodelink = document.getElementById("qrcodelink");
+      const qrcodeObjContainer = document.getElementById("qrcodeObjContainer");
+      const qrcodeObj = document.getElementById("qrcodeObj");
       const remoteView = document.getElementById("remoteView");
       const selfView = document.getElementById("selfView");
+      const qrscan = document.getElementById("qrscan");
       const start = document.getElementById("start");
       const unmute = document.getElementById("unmute");
       const form = document.forms["settings"];
+      const remoteOfferForm = document.forms["serverlessOffer"];
+      const remoteOffer = remoteOfferForm.elements["remoteOffer"];
+      const remoteOfferScan = document.getElementById("remoteOfferScan");
+      const localOfferArea = document.getElementById("localOffer");
+      const localOfferCopyButton = document.getElementById("copyLocalOffer");
 
       function _log(str, tag) {
         const logEntry = document.createElement(tag);
@@ -134,18 +195,64 @@ form label {
       }
 
       for (const el of form.elements) {
-        el.addEventListener("change", _ => {
+        el.addEventListener("change", e => {
           window.location.hash = JSON.stringify(readSettingsForm(false));
+          if (e.target.name == 'serverless') {
+            window.location.reload(false);
+          }
         });
       }
 
-      function getRoomName() {
+      function isServerless() {
-        JSON.parse(document.getElementById('room-name').textContent);
+        return settings && 'serverless' in settings && settings.serverless;
+      }
+
+      function withHash(hash) {
+        return window.location.href.split('#')[0] + '#' + hash;
+      }
+      function displayQR(qrcode, val) {
+        const encodeFunc = val instanceof Uint8Array
+          ? QRGen.encodeBinary
+          : QRGen.encodeText;
+        const qr = encodeFunc(val, QRGen.Ecc.MEDIUM);
+        const code = qr.toSvgString(1);
+        const viewBox = (/ viewBox="([^"]*)"/.exec(code))[1];
+        const pathD = (/ d="([^"]*)"/.exec(code))[1];
+        qrcode.setAttribute("viewBox", viewBox);
+        qrcode.querySelector("path").setAttribute("d", pathD);
+      }
+      function displayQRUrl(url) {
+        qrcodelink.href = url;
+        displayQR(qrcode, url);
+        qrcodelink.style.display = '';
+      }
+      function displayQRUrlForObj(obj) {
+        const json = JSON.stringify(obj);
+        log("Encoding message in QR code/link:");
+        logPre(json);
+        const compressed = compressor.compress(json);
+        const encoded = b64.bytesToBase64(compressed);
+        displayQRUrl(withHash('^' + encoded));
+      }
+      function displayQRCodeForObj(obj) {
+        const json = JSON.stringify(obj);
+        log("Encoding message in QR code for copy/paste:");
+        logPre(json);
+        const compressed = compressor.compress(json);
+        const encoded = b64.bytesToBase64(compressed);
+        displayQR(qrcodeObj, compressed);
+        localOfferArea.value = encoded;
+        localOfferCopyButton.onclick = _ => {
+          localOfferArea.focus();
+          localOfferArea.select();
+          document.execCommand('copy');
+        };
+        qrcodeObjContainer.style.display = '';
       }
 
       let roomName = window.location.hash;
       let isHost = roomName === undefined || !roomName;
-      if (roomName.startsWith("#{")) {
+      if (roomName && roomName.startsWith("#{")) {
         roomName = undefined;
         isHost = true;
 
@@ -167,6 +274,25 @@ form label {
           log("Failed to read settings from hash: " + error);
         }
       }
+      var firstMessage = undefined;
+      if (roomName && roomName.startsWith("#^")) {
+        roomName = undefined;
+        isHost = false;
+
+        try {
+          const hash = decodeURI(window.location.hash);
+          log("Reading first message from hash:");
+          logPre(hash);
+          log("Decoded base64:");
+          const decoded = (await getCompressor()).decompress(b64.base64ToBytes(hash.substring(2)));
+          logPre(decoded);
+          firstMessage = decoded;
+          settings = {serverless: true};
+        } catch (error) {
+          log("Failed to read message from hash: " + error);
+        }
+      }
+
       if (isHost) {
         // From https://stackoverflow.com/a/1349426
         function makeid(length) {
@@ -179,17 +305,23 @@ form label {
           return result;
         }
 
+        if (!isServerless()) {
           roomName = makeid(8);
-        qrcodelink.href = window.location.href.split('#')[0] + '#' + roomName;
+          displayQRUrl(withHash(roomName));
-        qrcode.src = window.location.href.split('#')[0] + roomName + '/qr';
+        }
-        qrcodelink.style.display = '';
       } else {
+        if (!isServerless()) {
           roomName = roomName.substring(1);
+        }
         qrcodelink.style.display = 'none';
         form.style.display = 'none';
       }
 
+      if (isServerless()) {
+        log("In serverless mode.");
+      } else {
         log("Room: " + roomName);
+      }
 
       var webSocket = undefined;
 
@@ -199,6 +331,10 @@ form label {
         const method = dcReady ? "dataConnection" : "webSocket";
         log("Sending message via " + method + "...");
         logPre(toSend);
+        if (isServerless() && !dcReady) {
+          log("ERROR: Attempted to use webSocket in serverless mode.");
+          return;
+        }
         (dcReady ? dc : webSocket).send(toSend);
       }
 
@@ -207,7 +343,12 @@ form label {
 
       function sendOffer() {
         if (pc.iceGatheringState == "complete") {
-          sendJson({
+          const sendFunc = !isServerless() || dc && dc.readyState == "open"
+            ? sendJson
+            : isHost
+              ? displayQRUrlForObj
+              : displayQRCodeForObj;
+          sendFunc({
             description: pc.localDescription
           });
         }
@@ -232,7 +373,10 @@ form label {
         //  ... but only once icegathering is complete.
         pc.onnegotiationneeded = async function () {
           log("In pc.onnegotiationneeded...");
-          await pc.setLocalDescription(await pc.createOffer());
+          const useOffer = (!settings || !('separateIce' in settings)
+                             || !settings.separateIce);
+          await pc.setLocalDescription(
+                      await (useOffer ? pc.createOffer() : pc.createAnswer()));
           sendOffer();
         }
 
@@ -245,11 +389,11 @@ form label {
 
           if (stream.getVideoTracks().length > 0) {
             remoteView.style.display = '';
-            out.style.display = 'none';
-            form.style.display = 'none';
             videos.style.display = '';
+            if (!settings.debug) {
               body.classList.add('justVideo');
             }
+          }
         };
 
         pc.ondatachannel = e => {
@@ -258,6 +402,7 @@ form label {
             receiveMessage({source: "dataChannel", data: e.data});
           }
           log('Data channel initialized.');
+          qrcodeObjContainer.style.display = 'none';
         }
 
         if (isHost) {
@@ -266,6 +411,8 @@ form label {
             receiveMessage({source: "dataChannel", data: e.data});
           }
           dc.onopen = e => {
+            remoteOffer.disabled = true;
+            remoteOfferScan.disabled = true;
             log("Data channel open, sending settings...")
             settings = readSettingsForm(true);
             sendJson({settings});
@@ -306,7 +453,7 @@ form label {
           : videoSettings == 'true'
             ? true
             : { advanced: [{facingMode: videoSettings}] };
-        log("Created videoConstraints.");
+        log("Created videoConstraints: " + JSON.stringify(videoConstraints));
         if (!videoConstraints && !audioSettings) return;
 
         const stream = videoSettings == 'screen'
@@ -327,8 +474,13 @@ form label {
           log("Added track.");
           pc.addTrack(track, stream);
         }
+        log('End of startStreaming(), creating answer...');
+        if (settings && 'separateIce' in settings && settings.separateIce) {
+          await pc.setLocalDescription(await pc.createAnswer());
+        }
       }
       function startStreamingWithErorrHandling(fromButton) {
+        try {
           startStreaming(fromButton)
             .then(() => {
               log("startStreaming() finished.");
@@ -336,6 +488,9 @@ form label {
             .catch(e => {
               log("startStreaming() errored: " + e.message);
             });
+        } catch (e) {
+          log("Error in startStreaming(): " + e);
+        }
       }
 
       start.addEventListener("click", _ => {
@@ -354,12 +509,20 @@ form label {
           settings = data.settings;
           startStreamingWithErorrHandling(false);
         } else if (data.description) {
+          try {
             if (pc == undefined) pc = createRTCPeerConnection();
             await pc.setRemoteDescription(data.description);
             if (data.description.type == "offer") {
               log("Got an offer...");
+              if (!settings || !('separateIce' in settings) || !settings.separateIce) {
                 await pc.setLocalDescription(await pc.createAnswer());
                 sendOffer();
+              } else {
+                log("separateIce mode, so delaying answer.");
+              }
+            }
+          } catch (e) {
+            log("Error accepting remote offer/answer: " + e);
           }
         }
       };
@@ -388,6 +551,7 @@ form label {
         return webSocket;
       }
 
+      if (!isServerless()) {
         webSocket = createWebSocket();
 
         if (!isHost) {
@@ -396,8 +560,42 @@ form label {
           //  so here just notify the host to start the process.
           webSocket.onopen = _ => sendJson({ready: true});
         }
+      } else if (isHost) {
+        await getCompressor();
+        pc = createRTCPeerConnection();
+        remoteOffer.value = '';
+        remoteOffer.onchange = _ => {
+          try {
+            const decoded = b64.base64ToBytes(remoteOffer.value);
+            const decompressed = compressor.decompress(decoded);
+            receiveMessage({source: 'textarea', data: decompressed});
+          } catch (e) {
+            log("Error decoding remote offer: " + e);
+          }
+        };
+        remoteOfferScan.onclick = _ => {
+          qrscan.style.display = '';
+          const qrScanner = new QrScanner(qrscan, (result) => {
+            qrscan.style.display = 'none';
+            log('Decoded qr code.');
+            try {
+              const decompressed = compressor.decompress(new Uint8Array(result.binaryData));
+              receiveMessage({source: 'qr', data: decompressed});
+              qrScanner.destroy();
+            } catch(error) {
+              log('Error interpreting QR code: ' + error);
+            }
+          });
+          qrScanner.start();
+        };
+        remoteOfferForm.style.display = '';
+      } else {
+        receiveMessage({source: 'URL', data: firstMessage});
+      }
 
       log("Finished <script> block.");
+    }
+    initialize();
     </script>
   </body>
 </html>

camera_site/settings.py

@@ -79,7 +79,7 @@ USE_TZ = True
 # Static files (CSS, JavaScript, Images)
 # https://docs.djangoproject.com/en/3.0/howto/static-files/
 
-STATIC_URL = '/static/'
+STATIC_URL = '/camera/static/'
 
 ASGI_APPLICATION = 'camera_site.routing.application'
 CHANNEL_LAYERS = {

external/LZMA-JS

@@ -0,0 +1 @@
+Subproject commit 8f98fe85a1ef78ab6e9d26ab85ce338f50095a23

external/base64.js

@@ -0,0 +1 @@
+Subproject commit 74d3cbf82481545bc26c104de2419f4ee30c7dd7

external/qr-code-generator/README

@@ -0,0 +1,4 @@
+Source: https://github.com/nayuki/QR-Code-generator
+Downloaded from https://www.nayuki.io/res/qr-code-generator-library/qrcodegen.js
+
+MIT Licensed

external/qr-code-generator/qrcodegen.js

@@ -0,0 +1,902 @@
+/*
+ * QR Code generator library (compiled from TypeScript)
+ *
+ * Copyright (c) 2019 Project Nayuki. (MIT License)
+ * https://www.nayuki.io/page/qr-code-generator-library
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ * - The above copyright notice and this permission notice shall be included in
+ *   all copies or substantial portions of the Software.
+ * - The Software is provided "as is", without warranty of any kind, express or
+ *   implied, including but not limited to the warranties of merchantability,
+ *   fitness for a particular purpose and noninfringement. In no event shall the
+ *   authors or copyright holders be liable for any claim, damages or other
+ *   liability, whether in an action of contract, tort or otherwise, arising from,
+ *   out of or in connection with the Software or the use or other dealings in the
+ *   Software.
+ */
+"use strict";
+var qrcodegen;
+(function (qrcodegen) {
+    /*---- QR Code symbol class ----*/
+    /*
+     * A QR Code symbol, which is a type of two-dimension barcode.
+     * Invented by Denso Wave and described in the ISO/IEC 18004 standard.
+     * Instances of this class represent an immutable square grid of black and white cells.
+     * The class provides static factory functions to create a QR Code from text or binary data.
+     * The class covers the QR Code Model 2 specification, supporting all versions (sizes)
+     * from 1 to 40, all 4 error correction levels, and 4 character encoding modes.
+     *
+     * Ways to create a QR Code object:
+     * - High level: Take the payload data and call QrCode.encodeText() or QrCode.encodeBinary().
+     * - Mid level: Custom-make the list of segments and call QrCode.encodeSegments().
+     * - Low level: Custom-make the array of data codeword bytes (including
+     *   segment headers and final padding, excluding error correction codewords),
+     *   supply the appropriate version number, and call the QrCode() constructor.
+     * (Note that all ways require supplying the desired error correction level.)
+     */
+    var QrCode = /** @class */ (function () {
+        /*-- Constructor (low level) and fields --*/
+        // Creates a new QR Code with the given version number,
+        // error correction level, data codeword bytes, and mask number.
+        // This is a low-level API that most users should not use directly.
+        // A mid-level API is the encodeSegments() function.
+        function QrCode(
+        // The version number of this QR Code, which is between 1 and 40 (inclusive).
+        // This determines the size of this barcode.
+        version, 
+        // The error correction level used in this QR Code.
+        errorCorrectionLevel, dataCodewords, 
+        // The index of the mask pattern used in this QR Code, which is between 0 and 7 (inclusive).
+        // Even if a QR Code is created with automatic masking requested (mask = -1),
+        // the resulting object still has a mask value between 0 and 7.
+        mask) {
+            this.version = version;
+            this.errorCorrectionLevel = errorCorrectionLevel;
+            this.mask = mask;
+            // The modules of this QR Code (false = white, true = black).
+            // Immutable after constructor finishes. Accessed through getModule().
+            this.modules = [];
+            // Indicates function modules that are not subjected to masking. Discarded when constructor finishes.
+            this.isFunction = [];
+            // Check scalar arguments
+            if (version < QrCode.MIN_VERSION || version > QrCode.MAX_VERSION)
+                throw "Version value out of range";
+            if (mask < -1 || mask > 7)
+                throw "Mask value out of range";
+            this.size = version * 4 + 17;
+            // Initialize both grids to be size*size arrays of Boolean false
+            var row = [];
+            for (var i = 0; i < this.size; i++)
+                row.push(false);
+            for (var i = 0; i < this.size; i++) {
+                this.modules.push(row.slice()); // Initially all white
+                this.isFunction.push(row.slice());
+            }
+            // Compute ECC, draw modules
+            this.drawFunctionPatterns();
+            var allCodewords = this.addEccAndInterleave(dataCodewords);
+            this.drawCodewords(allCodewords);
+            // Do masking
+            if (mask == -1) { // Automatically choose best mask
+                var minPenalty = 1000000000;
+                for (var i = 0; i < 8; i++) {
+                    this.applyMask(i);
+                    this.drawFormatBits(i);
+                    var penalty = this.getPenaltyScore();
+                    if (penalty < minPenalty) {
+                        mask = i;
+                        minPenalty = penalty;
+                    }
+                    this.applyMask(i); // Undoes the mask due to XOR
+                }
+            }
+            if (mask < 0 || mask > 7)
+                throw "Assertion error";
+            this.mask = mask;
+            this.applyMask(mask); // Apply the final choice of mask
+            this.drawFormatBits(mask); // Overwrite old format bits
+            this.isFunction = [];
+        }
+        /*-- Static factory functions (high level) --*/
+        // Returns a QR Code representing the given Unicode text string at the given error correction level.
+        // As a conservative upper bound, this function is guaranteed to succeed for strings that have 738 or fewer
+        // Unicode code points (not UTF-16 code units) if the low error correction level is used. The smallest possible
+        // QR Code version is automatically chosen for the output. The ECC level of the result may be higher than the
+        // ecl argument if it can be done without increasing the version.
+        QrCode.encodeText = function (text, ecl) {
+            var segs = qrcodegen.QrSegment.makeSegments(text);
+            return QrCode.encodeSegments(segs, ecl);
+        };
+        // Returns a QR Code representing the given binary data at the given error correction level.
+        // This function always encodes using the binary segment mode, not any text mode. The maximum number of
+        // bytes allowed is 2953. The smallest possible QR Code version is automatically chosen for the output.
+        // The ECC level of the result may be higher than the ecl argument if it can be done without increasing the version.
+        QrCode.encodeBinary = function (data, ecl) {
+            var seg = qrcodegen.QrSegment.makeBytes(data);
+            return QrCode.encodeSegments([seg], ecl);
+        };
+        /*-- Static factory functions (mid level) --*/
+        // Returns a QR Code representing the given segments with the given encoding parameters.
+        // The smallest possible QR Code version within the given range is automatically
+        // chosen for the output. Iff boostEcl is true, then the ECC level of the result
+        // may be higher than the ecl argument if it can be done without increasing the
+        // version. The mask number is either between 0 to 7 (inclusive) to force that
+        // mask, or -1 to automatically choose an appropriate mask (which may be slow).
+        // This function allows the user to create a custom sequence of segments that switches
+        // between modes (such as alphanumeric and byte) to encode text in less space.
+        // This is a mid-level API; the high-level API is encodeText() and encodeBinary().
+        QrCode.encodeSegments = function (segs, ecl, minVersion, maxVersion, mask, boostEcl) {
+            if (minVersion === void 0) { minVersion = 1; }
+            if (maxVersion === void 0) { maxVersion = 40; }
+            if (mask === void 0) { mask = -1; }
+            if (boostEcl === void 0) { boostEcl = true; }
+            if (!(QrCode.MIN_VERSION <= minVersion && minVersion <= maxVersion && maxVersion <= QrCode.MAX_VERSION)
+                || mask < -1 || mask > 7)
+                throw "Invalid value";
+            // Find the minimal version number to use
+            var version;
+            var dataUsedBits;
+            for (version = minVersion;; version++) {
+                var dataCapacityBits_1 = QrCode.getNumDataCodewords(version, ecl) * 8; // Number of data bits available
+                var usedBits = QrSegment.getTotalBits(segs, version);
+                if (usedBits <= dataCapacityBits_1) {
+                    dataUsedBits = usedBits;
+                    break; // This version number is found to be suitable
+                }
+                if (version >= maxVersion) // All versions in the range could not fit the given data
+                    throw "Data too long";
+            }
+            // Increase the error correction level while the data still fits in the current version number
+            for (var _i = 0, _a = [QrCode.Ecc.MEDIUM, QrCode.Ecc.QUARTILE, QrCode.Ecc.HIGH]; _i < _a.length; _i++) { // From low to high
+                var newEcl = _a[_i];
+                if (boostEcl && dataUsedBits <= QrCode.getNumDataCodewords(version, newEcl) * 8)
+                    ecl = newEcl;
+            }
+            // Concatenate all segments to create the data bit string
+            var bb = [];
+            for (var _b = 0, segs_1 = segs; _b < segs_1.length; _b++) {
+                var seg = segs_1[_b];
+                appendBits(seg.mode.modeBits, 4, bb);
+                appendBits(seg.numChars, seg.mode.numCharCountBits(version), bb);
+                for (var _c = 0, _d = seg.getData(); _c < _d.length; _c++) {
+                    var b = _d[_c];
+                    bb.push(b);
+                }
+            }
+            if (bb.length != dataUsedBits)
+                throw "Assertion error";
+            // Add terminator and pad up to a byte if applicable
+            var dataCapacityBits = QrCode.getNumDataCodewords(version, ecl) * 8;
+            if (bb.length > dataCapacityBits)
+                throw "Assertion error";
+            appendBits(0, Math.min(4, dataCapacityBits - bb.length), bb);
+            appendBits(0, (8 - bb.length % 8) % 8, bb);
+            if (bb.length % 8 != 0)
+                throw "Assertion error";
+            // Pad with alternating bytes until data capacity is reached
+            for (var padByte = 0xEC; bb.length < dataCapacityBits; padByte ^= 0xEC ^ 0x11)
+                appendBits(padByte, 8, bb);
+            // Pack bits into bytes in big endian
+            var dataCodewords = [];
+            while (dataCodewords.length * 8 < bb.length)
+                dataCodewords.push(0);
+            bb.forEach(function (b, i) {
+                return dataCodewords[i >>> 3] |= b << (7 - (i & 7));
+            });
+            // Create the QR Code object
+            return new QrCode(version, ecl, dataCodewords, mask);
+        };
+        /*-- Accessor methods --*/
+        // Returns the color of the module (pixel) at the given coordinates, which is false
+        // for white or true for black. The top left corner has the coordinates (x=0, y=0).
+        // If the given coordinates are out of bounds, then false (white) is returned.
+        QrCode.prototype.getModule = function (x, y) {
+            return 0 <= x && x < this.size && 0 <= y && y < this.size && this.modules[y][x];
+        };
+        /*-- Public instance methods --*/
+        // Draws this QR Code, with the given module scale and border modules, onto the given HTML
+        // canvas element. The canvas's width and height is resized to (this.size + border * 2) * scale.
+        // The drawn image is be purely black and white, and fully opaque.
+        // The scale must be a positive integer and the border must be a non-negative integer.
+        QrCode.prototype.drawCanvas = function (scale, border, canvas) {
+            if (scale <= 0 || border < 0)
+                throw "Value out of range";
+            var width = (this.size + border * 2) * scale;
+            canvas.width = width;
+            canvas.height = width;
+            var ctx = canvas.getContext("2d");
+            for (var y = -border; y < this.size + border; y++) {
+                for (var x = -border; x < this.size + border; x++) {
+                    ctx.fillStyle = this.getModule(x, y) ? "#000000" : "#FFFFFF";
+                    ctx.fillRect((x + border) * scale, (y + border) * scale, scale, scale);
+                }
+            }
+        };
+        // Returns a string of SVG code for an image depicting this QR Code, with the given number
+        // of border modules. The string always uses Unix newlines (\n), regardless of the platform.
+        QrCode.prototype.toSvgString = function (border) {
+            if (border < 0)
+                throw "Border must be non-negative";
+            var parts = [];
+            for (var y = 0; y < this.size; y++) {
+                for (var x = 0; x < this.size; x++) {
+                    if (this.getModule(x, y))
+                        parts.push("M" + (x + border) + "," + (y + border) + "h1v1h-1z");
+                }
+            }
+            return "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" viewBox=\"0 0 " + (this.size + border * 2) + " " + (this.size + border * 2) + "\" stroke=\"none\">\n\t<rect width=\"100%\" height=\"100%\" fill=\"#FFFFFF\"/>\n\t<path d=\"" + parts.join(" ") + "\" fill=\"#000000\"/>\n</svg>\n";
+        };
+        /*-- Private helper methods for constructor: Drawing function modules --*/
+        // Reads this object's version field, and draws and marks all function modules.
+        QrCode.prototype.drawFunctionPatterns = function () {
+            // Draw horizontal and vertical timing patterns
+            for (var i = 0; i < this.size; i++) {
+                this.setFunctionModule(6, i, i % 2 == 0);
+                this.setFunctionModule(i, 6, i % 2 == 0);
+            }
+            // Draw 3 finder patterns (all corners except bottom right; overwrites some timing modules)
+            this.drawFinderPattern(3, 3);
+            this.drawFinderPattern(this.size - 4, 3);
+            this.drawFinderPattern(3, this.size - 4);
+            // Draw numerous alignment patterns
+            var alignPatPos = this.getAlignmentPatternPositions();
+            var numAlign = alignPatPos.length;
+            for (var i = 0; i < numAlign; i++) {
+                for (var j = 0; j < numAlign; j++) {
+                    // Don't draw on the three finder corners
+                    if (!(i == 0 && j == 0 || i == 0 && j == numAlign - 1 || i == numAlign - 1 && j == 0))
+                        this.drawAlignmentPattern(alignPatPos[i], alignPatPos[j]);
+                }
+            }
+            // Draw configuration data
+            this.drawFormatBits(0); // Dummy mask value; overwritten later in the constructor
+            this.drawVersion();
+        };
+        // Draws two copies of the format bits (with its own error correction code)
+        // based on the given mask and this object's error correction level field.
+        QrCode.prototype.drawFormatBits = function (mask) {
+            // Calculate error correction code and pack bits
+            var data = this.errorCorrectionLevel.formatBits << 3 | mask; // errCorrLvl is uint2, mask is uint3
+            var rem = data;
+            for (var i = 0; i < 10; i++)
+                rem = (rem << 1) ^ ((rem >>> 9) * 0x537);
+            var bits = (data << 10 | rem) ^ 0x5412; // uint15
+            if (bits >>> 15 != 0)
+                throw "Assertion error";
+            // Draw first copy
+            for (var i = 0; i <= 5; i++)
+                this.setFunctionModule(8, i, getBit(bits, i));
+            this.setFunctionModule(8, 7, getBit(bits, 6));
+            this.setFunctionModule(8, 8, getBit(bits, 7));
+            this.setFunctionModule(7, 8, getBit(bits, 8));
+            for (var i = 9; i < 15; i++)
+                this.setFunctionModule(14 - i, 8, getBit(bits, i));
+            // Draw second copy
+            for (var i = 0; i < 8; i++)
+                this.setFunctionModule(this.size - 1 - i, 8, getBit(bits, i));
+            for (var i = 8; i < 15; i++)
+                this.setFunctionModule(8, this.size - 15 + i, getBit(bits, i));
+            this.setFunctionModule(8, this.size - 8, true); // Always black
+        };
+        // Draws two copies of the version bits (with its own error correction code),
+        // based on this object's version field, iff 7 <= version <= 40.
+        QrCode.prototype.drawVersion = function () {
+            if (this.version < 7)
+                return;
+            // Calculate error correction code and pack bits
+            var rem = this.version; // version is uint6, in the range [7, 40]
+            for (var i = 0; i < 12; i++)
+                rem = (rem << 1) ^ ((rem >>> 11) * 0x1F25);
+            var bits = this.version << 12 | rem; // uint18
+            if (bits >>> 18 != 0)
+                throw "Assertion error";
+            // Draw two copies
+            for (var i = 0; i < 18; i++) {
+                var color = getBit(bits, i);
+                var a = this.size - 11 + i % 3;
+                var b = Math.floor(i / 3);
+                this.setFunctionModule(a, b, color);
+                this.setFunctionModule(b, a, color);
+            }
+        };
+        // Draws a 9*9 finder pattern including the border separator,
+        // with the center module at (x, y). Modules can be out of bounds.
+        QrCode.prototype.drawFinderPattern = function (x, y) {
+            for (var dy = -4; dy <= 4; dy++) {
+                for (var dx = -4; dx <= 4; dx++) {
+                    var dist = Math.max(Math.abs(dx), Math.abs(dy)); // Chebyshev/infinity norm
+                    var xx = x + dx;
+                    var yy = y + dy;
+                    if (0 <= xx && xx < this.size && 0 <= yy && yy < this.size)
+                        this.setFunctionModule(xx, yy, dist != 2 && dist != 4);
+                }
+            }
+        };
+        // Draws a 5*5 alignment pattern, with the center module
+        // at (x, y). All modules must be in bounds.
+        QrCode.prototype.drawAlignmentPattern = function (x, y) {
+            for (var dy = -2; dy <= 2; dy++) {
+                for (var dx = -2; dx <= 2; dx++)
+                    this.setFunctionModule(x + dx, y + dy, Math.max(Math.abs(dx), Math.abs(dy)) != 1);
+            }
+        };
+        // Sets the color of a module and marks it as a function module.
+        // Only used by the constructor. Coordinates must be in bounds.
+        QrCode.prototype.setFunctionModule = function (x, y, isBlack) {
+            this.modules[y][x] = isBlack;
+            this.isFunction[y][x] = true;
+        };
+        /*-- Private helper methods for constructor: Codewords and masking --*/
+        // Returns a new byte string representing the given data with the appropriate error correction
+        // codewords appended to it, based on this object's version and error correction level.
+        QrCode.prototype.addEccAndInterleave = function (data) {
+            var ver = this.version;
+            var ecl = this.errorCorrectionLevel;
+            if (data.length != QrCode.getNumDataCodewords(ver, ecl))
+                throw "Invalid argument";
+            // Calculate parameter numbers
+            var numBlocks = QrCode.NUM_ERROR_CORRECTION_BLOCKS[ecl.ordinal][ver];
+            var blockEccLen = QrCode.ECC_CODEWORDS_PER_BLOCK[ecl.ordinal][ver];
+            var rawCodewords = Math.floor(QrCode.getNumRawDataModules(ver) / 8);
+            var numShortBlocks = numBlocks - rawCodewords % numBlocks;
+            var shortBlockLen = Math.floor(rawCodewords / numBlocks);
+            // Split data into blocks and append ECC to each block
+            var blocks = [];
+            var rsDiv = QrCode.reedSolomonComputeDivisor(blockEccLen);
+            for (var i = 0, k = 0; i < numBlocks; i++) {
+                var dat = data.slice(k, k + shortBlockLen - blockEccLen + (i < numShortBlocks ? 0 : 1));
+                k += dat.length;
+                var ecc = QrCode.reedSolomonComputeRemainder(dat, rsDiv);
+                if (i < numShortBlocks)
+                    dat.push(0);
+                blocks.push(dat.concat(ecc));
+            }
+            // Interleave (not concatenate) the bytes from every block into a single sequence
+            var result = [];
+            for (var i = 0; i < blocks[0].length; i++) {
+                for (var j = 0; j < blocks.length; j++) {
+                    // Skip the padding byte in short blocks
+                    if (i != shortBlockLen - blockEccLen || j >= numShortBlocks)
+                        result.push(blocks[j][i]);
+                }
+            }
+            if (result.length != rawCodewords)
+                throw "Assertion error";
+            return result;
+        };
+        // Draws the given sequence of 8-bit codewords (data and error correction) onto the entire
+        // data area of this QR Code. Function modules need to be marked off before this is called.
+        QrCode.prototype.drawCodewords = function (data) {
+            if (data.length != Math.floor(QrCode.getNumRawDataModules(this.version) / 8))
+                throw "Invalid argument";
+            var i = 0; // Bit index into the data
+            // Do the funny zigzag scan
+            for (var right = this.size - 1; right >= 1; right -= 2) { // Index of right column in each column pair
+                if (right == 6)
+                    right = 5;
+                for (var vert = 0; vert < this.size; vert++) { // Vertical counter
+                    for (var j = 0; j < 2; j++) {
+                        var x = right - j; // Actual x coordinate
+                        var upward = ((right + 1) & 2) == 0;
+                        var y = upward ? this.size - 1 - vert : vert; // Actual y coordinate
+                        if (!this.isFunction[y][x] && i < data.length * 8) {
+                            this.modules[y][x] = getBit(data[i >>> 3], 7 - (i & 7));
+                            i++;
+                        }
+                        // If this QR Code has any remainder bits (0 to 7), they were assigned as
+                        // 0/false/white by the constructor and are left unchanged by this method
+                    }
+                }
+            }
+            if (i != data.length * 8)
+                throw "Assertion error";
+        };
+        // XORs the codeword modules in this QR Code with the given mask pattern.
+        // The function modules must be marked and the codeword bits must be drawn
+        // before masking. Due to the arithmetic of XOR, calling applyMask() with
+        // the same mask value a second time will undo the mask. A final well-formed
+        // QR Code needs exactly one (not zero, two, etc.) mask applied.
+        QrCode.prototype.applyMask = function (mask) {
+            if (mask < 0 || mask > 7)
+                throw "Mask value out of range";
+            for (var y = 0; y < this.size; y++) {
+                for (var x = 0; x < this.size; x++) {
+                    var invert = void 0;
+                    switch (mask) {
+                        case 0:
+                            invert = (x + y) % 2 == 0;
+                            break;
+                        case 1:
+                            invert = y % 2 == 0;
+                            break;
+                        case 2:
+                            invert = x % 3 == 0;
+                            break;
+                        case 3:
+                            invert = (x + y) % 3 == 0;
+                            break;
+                        case 4:
+                            invert = (Math.floor(x / 3) + Math.floor(y / 2)) % 2 == 0;
+                            break;
+                        case 5:
+                            invert = x * y % 2 + x * y % 3 == 0;
+                            break;
+                        case 6:
+                            invert = (x * y % 2 + x * y % 3) % 2 == 0;
+                            break;
+                        case 7:
+                            invert = ((x + y) % 2 + x * y % 3) % 2 == 0;
+                            break;
+                        default: throw "Assertion error";
+                    }
+                    if (!this.isFunction[y][x] && invert)
+                        this.modules[y][x] = !this.modules[y][x];
+                }
+            }
+        };
+        // Calculates and returns the penalty score based on state of this QR Code's current modules.
+        // This is used by the automatic mask choice algorithm to find the mask pattern that yields the lowest score.
+        QrCode.prototype.getPenaltyScore = function () {
+            var result = 0;
+            // Adjacent modules in row having same color, and finder-like patterns
+            for (var y = 0; y < this.size; y++) {
+                var runColor = false;
+                var runX = 0;
+                var runHistory = [0, 0, 0, 0, 0, 0, 0];
+                var padRun = this.size;
+                for (var x = 0; x < this.size; x++) {
+                    if (this.modules[y][x] == runColor) {
+                        runX++;
+                        if (runX == 5)
+                            result += QrCode.PENALTY_N1;
+                        else if (runX > 5)
+                            result++;
+                    }
+                    else {
+                        QrCode.finderPenaltyAddHistory(runX + padRun, runHistory);
+                        padRun = 0;
+                        if (!runColor)
+                            result += this.finderPenaltyCountPatterns(runHistory) * QrCode.PENALTY_N3;
+                        runColor = this.modules[y][x];
+                        runX = 1;
+                    }
+                }
+                result += this.finderPenaltyTerminateAndCount(runColor, runX + padRun, runHistory) * QrCode.PENALTY_N3;
+            }
+            // Adjacent modules in column having same color, and finder-like patterns
+            for (var x = 0; x < this.size; x++) {
+                var runColor = false;
+                var runY = 0;
+                var runHistory = [0, 0, 0, 0, 0, 0, 0];
+                var padRun = this.size;
+                for (var y = 0; y < this.size; y++) {
+                    if (this.modules[y][x] == runColor) {
+                        runY++;
+                        if (runY == 5)
+                            result += QrCode.PENALTY_N1;
+                        else if (runY > 5)
+                            result++;
+                    }
+                    else {
+                        QrCode.finderPenaltyAddHistory(runY + padRun, runHistory);
+                        padRun = 0;
+                        if (!runColor)
+                            result += this.finderPenaltyCountPatterns(runHistory) * QrCode.PENALTY_N3;
+                        runColor = this.modules[y][x];
+                        runY = 1;
+                    }
+                }
+                result += this.finderPenaltyTerminateAndCount(runColor, runY + padRun, runHistory) * QrCode.PENALTY_N3;
+            }
+            // 2*2 blocks of modules having same color
+            for (var y = 0; y < this.size - 1; y++) {
+                for (var x = 0; x < this.size - 1; x++) {
+                    var color = this.modules[y][x];
+                    if (color == this.modules[y][x + 1] &&
+                        color == this.modules[y + 1][x] &&
+                        color == this.modules[y + 1][x + 1])
+                        result += QrCode.PENALTY_N2;
+                }
+            }
+            // Balance of black and white modules
+            var black = 0;
+            for (var _i = 0, _a = this.modules; _i < _a.length; _i++) {
+                var row = _a[_i];
+                for (var _b = 0, row_1 = row; _b < row_1.length; _b++) {
+                    var color = row_1[_b];
+                    if (color)
+                        black++;
+                }
+            }
+            var total = this.size * this.size; // Note that size is odd, so black/total != 1/2
+            // Compute the smallest integer k >= 0 such that (45-5k)% <= black/total <= (55+5k)%
+            var k = Math.ceil(Math.abs(black * 20 - total * 10) / total) - 1;
+            result += k * QrCode.PENALTY_N4;
+            return result;
+        };
+        /*-- Private helper functions --*/
+        // Returns an ascending list of positions of alignment patterns for this version number.
+        // Each position is in the range [0,177), and are used on both the x and y axes.
+        // This could be implemented as lookup table of 40 variable-length lists of integers.
+        QrCode.prototype.getAlignmentPatternPositions = function () {
+            if (this.version == 1)
+                return [];
+            else {
+                var numAlign = Math.floor(this.version / 7) + 2;
+                var step = (this.version == 32) ? 26 :
+                    Math.ceil((this.size - 13) / (numAlign * 2 - 2)) * 2;
+                var result = [6];
+                for (var pos = this.size - 7; result.length < numAlign; pos -= step)
+                    result.splice(1, 0, pos);
+                return result;
+            }
+        };
+        // Returns the number of data bits that can be stored in a QR Code of the given version number, after
+        // all function modules are excluded. This includes remainder bits, so it might not be a multiple of 8.
+        // The result is in the range [208, 29648]. This could be implemented as a 40-entry lookup table.
+        QrCode.getNumRawDataModules = function (ver) {
+            if (ver < QrCode.MIN_VERSION || ver > QrCode.MAX_VERSION)
+                throw "Version number out of range";
+            var result = (16 * ver + 128) * ver + 64;
+            if (ver >= 2) {
+                var numAlign = Math.floor(ver / 7) + 2;
+                result -= (25 * numAlign - 10) * numAlign - 55;
+                if (ver >= 7)
+                    result -= 36;
+            }
+            return result;
+        };
+        // Returns the number of 8-bit data (i.e. not error correction) codewords contained in any
+        // QR Code of the given version number and error correction level, with remainder bits discarded.
+        // This stateless pure function could be implemented as a (40*4)-cell lookup table.
+        QrCode.getNumDataCodewords = function (ver, ecl) {
+            return Math.floor(QrCode.getNumRawDataModules(ver) / 8) -
+                QrCode.ECC_CODEWORDS_PER_BLOCK[ecl.ordinal][ver] *
+                    QrCode.NUM_ERROR_CORRECTION_BLOCKS[ecl.ordinal][ver];
+        };
+        // Returns a Reed-Solomon ECC generator polynomial for the given degree. This could be
+        // implemented as a lookup table over all possible parameter values, instead of as an algorithm.
+        QrCode.reedSolomonComputeDivisor = function (degree) {
+            if (degree < 1 || degree > 255)
+                throw "Degree out of range";
+            // Polynomial coefficients are stored from highest to lowest power, excluding the leading term which is always 1.
+            // For example the polynomial x^3 + 255x^2 + 8x + 93 is stored as the uint8 array [255, 8, 93].
+            var result = [];
+            for (var i = 0; i < degree - 1; i++)
+                result.push(0);
+            result.push(1); // Start off with the monomial x^0
+            // Compute the product polynomial (x - r^0) * (x - r^1) * (x - r^2) * ... * (x - r^{degree-1}),
+            // and drop the highest monomial term which is always 1x^degree.
+            // Note that r = 0x02, which is a generator element of this field GF(2^8/0x11D).
+            var root = 1;
+            for (var i = 0; i < degree; i++) {
+                // Multiply the current product by (x - r^i)
+                for (var j = 0; j < result.length; j++) {
+                    result[j] = QrCode.reedSolomonMultiply(result[j], root);
+                    if (j + 1 < result.length)
+                        result[j] ^= result[j + 1];
+                }
+                root = QrCode.reedSolomonMultiply(root, 0x02);
+            }
+            return result;
+        };
+        // Returns the Reed-Solomon error correction codeword for the given data and divisor polynomials.
+        QrCode.reedSolomonComputeRemainder = function (data, divisor) {
+            var result = divisor.map(function (_) { return 0; });
+            var _loop_1 = function (b) {
+                var factor = b ^ result.shift();
+                result.push(0);
+                divisor.forEach(function (coef, i) {
+                    return result[i] ^= QrCode.reedSolomonMultiply(coef, factor);
+                });
+            };
+            for (var _i = 0, data_1 = data; _i < data_1.length; _i++) {
+                var b = data_1[_i];
+                _loop_1(b);
+            }
+            return result;
+        };
+        // Returns the product of the two given field elements modulo GF(2^8/0x11D). The arguments and result
+        // are unsigned 8-bit integers. This could be implemented as a lookup table of 256*256 entries of uint8.
+        QrCode.reedSolomonMultiply = function (x, y) {
+            if (x >>> 8 != 0 || y >>> 8 != 0)
+                throw "Byte out of range";
+            // Russian peasant multiplication
+            var z = 0;
+            for (var i = 7; i >= 0; i--) {
+                z = (z << 1) ^ ((z >>> 7) * 0x11D);
+                z ^= ((y >>> i) & 1) * x;
+            }
+            if (z >>> 8 != 0)
+                throw "Assertion error";
+            return z;
+        };
+        // Can only be called immediately after a white run is added, and
+        // returns either 0, 1, or 2. A helper function for getPenaltyScore().
+        QrCode.prototype.finderPenaltyCountPatterns = function (runHistory) {
+            var n = runHistory[1];
+            if (n > this.size * 3)
+                throw "Assertion error";
+            var core = n > 0 && runHistory[2] == n && runHistory[3] == n * 3 && runHistory[4] == n && runHistory[5] == n;
+            return (core && runHistory[0] >= n * 4 && runHistory[6] >= n ? 1 : 0)
+                + (core && runHistory[6] >= n * 4 && runHistory[0] >= n ? 1 : 0);
+        };
+        // Must be called at the end of a line (row or column) of modules. A helper function for getPenaltyScore().
+        QrCode.prototype.finderPenaltyTerminateAndCount = function (currentRunColor, currentRunLength, runHistory) {
+            if (currentRunColor) { // Terminate black run
+                QrCode.finderPenaltyAddHistory(currentRunLength, runHistory);
+                currentRunLength = 0;
+            }
+            currentRunLength += this.size; // Add white border to final run
+            QrCode.finderPenaltyAddHistory(currentRunLength, runHistory);
+            return this.finderPenaltyCountPatterns(runHistory);
+        };
+        // Pushes the given value to the front and drops the last value. A helper function for getPenaltyScore().
+        QrCode.finderPenaltyAddHistory = function (currentRunLength, runHistory) {
+            runHistory.pop();
+            runHistory.unshift(currentRunLength);
+        };
+        /*-- Constants and tables --*/
+        // The minimum version number supported in the QR Code Model 2 standard.
+        QrCode.MIN_VERSION = 1;
+        // The maximum version number supported in the QR Code Model 2 standard.
+        QrCode.MAX_VERSION = 40;
+        // For use in getPenaltyScore(), when evaluating which mask is best.
+        QrCode.PENALTY_N1 = 3;
+        QrCode.PENALTY_N2 = 3;
+        QrCode.PENALTY_N3 = 40;
+        QrCode.PENALTY_N4 = 10;
+        QrCode.ECC_CODEWORDS_PER_BLOCK = [
+            // Version: (note that index 0 is for padding, and is set to an illegal value)
+            //0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40    Error correction level
+            [-1, 7, 10, 15, 20, 26, 18, 20, 24, 30, 18, 20, 24, 26, 30, 22, 24, 28, 30, 28, 28, 28, 28, 30, 30, 26, 28, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30],
+            [-1, 10, 16, 26, 18, 24, 16, 18, 22, 22, 26, 30, 22, 22, 24, 24, 28, 28, 26, 26, 26, 26, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28],
+            [-1, 13, 22, 18, 26, 18, 24, 18, 22, 20, 24, 28, 26, 24, 20, 30, 24, 28, 28, 26, 30, 28, 30, 30, 30, 30, 28, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30],
+            [-1, 17, 28, 22, 16, 22, 28, 26, 26, 24, 28, 24, 28, 22, 24, 24, 30, 28, 28, 26, 28, 30, 24, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30],
+        ];
+        QrCode.NUM_ERROR_CORRECTION_BLOCKS = [
+            // Version: (note that index 0 is for padding, and is set to an illegal value)
+            //0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40    Error correction level
+            [-1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 4, 4, 4, 4, 4, 6, 6, 6, 6, 7, 8, 8, 9, 9, 10, 12, 12, 12, 13, 14, 15, 16, 17, 18, 19, 19, 20, 21, 22, 24, 25],
+            [-1, 1, 1, 1, 2, 2, 4, 4, 4, 5, 5, 5, 8, 9, 9, 10, 10, 11, 13, 14, 16, 17, 17, 18, 20, 21, 23, 25, 26, 28, 29, 31, 33, 35, 37, 38, 40, 43, 45, 47, 49],
+            [-1, 1, 1, 2, 2, 4, 4, 6, 6, 8, 8, 8, 10, 12, 16, 12, 17, 16, 18, 21, 20, 23, 23, 25, 27, 29, 34, 34, 35, 38, 40, 43, 45, 48, 51, 53, 56, 59, 62, 65, 68],
+            [-1, 1, 1, 2, 4, 4, 4, 5, 6, 8, 8, 11, 11, 16, 16, 18, 16, 19, 21, 25, 25, 25, 34, 30, 32, 35, 37, 40, 42, 45, 48, 51, 54, 57, 60, 63, 66, 70, 74, 77, 81],
+        ];
+        return QrCode;
+    }());
+    qrcodegen.QrCode = QrCode;
+    // Appends the given number of low-order bits of the given value
+    // to the given buffer. Requires 0 <= len <= 31 and 0 <= val < 2^len.
+    function appendBits(val, len, bb) {
+        if (len < 0 || len > 31 || val >>> len != 0)
+            throw "Value out of range";
+        for (var i = len - 1; i >= 0; i--) // Append bit by bit
+            bb.push((val >>> i) & 1);
+    }
+    // Returns true iff the i'th bit of x is set to 1.
+    function getBit(x, i) {
+        return ((x >>> i) & 1) != 0;
+    }
+    /*---- Data segment class ----*/
+    /*
+     * A segment of character/binary/control data in a QR Code symbol.
+     * Instances of this class are immutable.
+     * The mid-level way to create a segment is to take the payload data
+     * and call a static factory function such as QrSegment.makeNumeric().
+     * The low-level way to create a segment is to custom-make the bit buffer
+     * and call the QrSegment() constructor with appropriate values.
+     * This segment class imposes no length restrictions, but QR Codes have restrictions.
+     * Even in the most favorable conditions, a QR Code can only hold 7089 characters of data.
+     * Any segment longer than this is meaningless for the purpose of generating QR Codes.
+     */
+    var QrSegment = /** @class */ (function () {
+        /*-- Constructor (low level) and fields --*/
+        // Creates a new QR Code segment with the given attributes and data.
+        // The character count (numChars) must agree with the mode and the bit buffer length,
+        // but the constraint isn't checked. The given bit buffer is cloned and stored.
+        function QrSegment(
+        // The mode indicator of this segment.
+        mode, 
+        // The length of this segment's unencoded data. Measured in characters for
+        // numeric/alphanumeric/kanji mode, bytes for byte mode, and 0 for ECI mode.
+        // Always zero or positive. Not the same as the data's bit length.
+        numChars, 
+        // The data bits of this segment. Accessed through getData().
+        bitData) {
+            this.mode = mode;
+            this.numChars = numChars;
+            this.bitData = bitData;
+            if (numChars < 0)
+                throw "Invalid argument";
+            this.bitData = bitData.slice(); // Make defensive copy
+        }
+        /*-- Static factory functions (mid level) --*/
+        // Returns a segment representing the given binary data encoded in
+        // byte mode. All input byte arrays are acceptable. Any text string
+        // can be converted to UTF-8 bytes and encoded as a byte mode segment.
+        QrSegment.makeBytes = function (data) {
+            var bb = [];
+            for (var _i = 0, data_2 = data; _i < data_2.length; _i++) {
+                var b = data_2[_i];
+                appendBits(b, 8, bb);
+            }
+            return new QrSegment(QrSegment.Mode.BYTE, data.length, bb);
+        };
+        // Returns a segment representing the given string of decimal digits encoded in numeric mode.
+        QrSegment.makeNumeric = function (digits) {
+            if (!this.NUMERIC_REGEX.test(digits))
+                throw "String contains non-numeric characters";
+            var bb = [];
+            for (var i = 0; i < digits.length;) { // Consume up to 3 digits per iteration
+                var n = Math.min(digits.length - i, 3);
+                appendBits(parseInt(digits.substr(i, n), 10), n * 3 + 1, bb);
+                i += n;
+            }
+            return new QrSegment(QrSegment.Mode.NUMERIC, digits.length, bb);
+        };
+        // Returns a segment representing the given text string encoded in alphanumeric mode.
+        // The characters allowed are: 0 to 9, A to Z (uppercase only), space,
+        // dollar, percent, asterisk, plus, hyphen, period, slash, colon.
+        QrSegment.makeAlphanumeric = function (text) {
+            if (!this.ALPHANUMERIC_REGEX.test(text))
+                throw "String contains unencodable characters in alphanumeric mode";
+            var bb = [];
+            var i;
+            for (i = 0; i + 2 <= text.length; i += 2) { // Process groups of 2
+                var temp = QrSegment.ALPHANUMERIC_CHARSET.indexOf(text.charAt(i)) * 45;
+                temp += QrSegment.ALPHANUMERIC_CHARSET.indexOf(text.charAt(i + 1));
+                appendBits(temp, 11, bb);
+            }
+            if (i < text.length) // 1 character remaining
+                appendBits(QrSegment.ALPHANUMERIC_CHARSET.indexOf(text.charAt(i)), 6, bb);
+            return new QrSegment(QrSegment.Mode.ALPHANUMERIC, text.length, bb);
+        };
+        // Returns a new mutable list of zero or more segments to represent the given Unicode text string.
+        // The result may use various segment modes and switch modes to optimize the length of the bit stream.
+        QrSegment.makeSegments = function (text) {
+            // Select the most efficient segment encoding automatically
+            if (text == "")
+                return [];
+            else if (this.NUMERIC_REGEX.test(text))
+                return [QrSegment.makeNumeric(text)];
+            else if (this.ALPHANUMERIC_REGEX.test(text))
+                return [QrSegment.makeAlphanumeric(text)];
+            else
+                return [QrSegment.makeBytes(QrSegment.toUtf8ByteArray(text))];
+        };
+        // Returns a segment representing an Extended Channel Interpretation
+        // (ECI) designator with the given assignment value.
+        QrSegment.makeEci = function (assignVal) {
+            var bb = [];
+            if (assignVal < 0)
+                throw "ECI assignment value out of range";
+            else if (assignVal < (1 << 7))
+                appendBits(assignVal, 8, bb);
+            else if (assignVal < (1 << 14)) {
+                appendBits(2, 2, bb);
+                appendBits(assignVal, 14, bb);
+            }
+            else if (assignVal < 1000000) {
+                appendBits(6, 3, bb);
+                appendBits(assignVal, 21, bb);
+            }
+            else
+                throw "ECI assignment value out of range";
+            return new QrSegment(QrSegment.Mode.ECI, 0, bb);
+        };
+        /*-- Methods --*/
+        // Returns a new copy of the data bits of this segment.
+        QrSegment.prototype.getData = function () {
+            return this.bitData.slice(); // Make defensive copy
+        };
+        // (Package-private) Calculates and returns the number of bits needed to encode the given segments at
+        // the given version. The result is infinity if a segment has too many characters to fit its length field.
+        QrSegment.getTotalBits = function (segs, version) {
+            var result = 0;
+            for (var _i = 0, segs_2 = segs; _i < segs_2.length; _i++) {
+                var seg = segs_2[_i];
+                var ccbits = seg.mode.numCharCountBits(version);
+                if (seg.numChars >= (1 << ccbits))
+                    return Infinity; // The segment's length doesn't fit the field's bit width
+                result += 4 + ccbits + seg.bitData.length;
+            }
+            return result;
+        };
+        // Returns a new array of bytes representing the given string encoded in UTF-8.
+        QrSegment.toUtf8ByteArray = function (str) {
+            str = encodeURI(str);
+            var result = [];
+            for (var i = 0; i < str.length; i++) {
+                if (str.charAt(i) != "%")
+                    result.push(str.charCodeAt(i));
+                else {
+                    result.push(parseInt(str.substr(i + 1, 2), 16));
+                    i += 2;
+                }
+            }
+            return result;
+        };
+        /*-- Constants --*/
+        // Describes precisely all strings that are encodable in numeric mode. To test
+        // whether a string s is encodable: let ok: boolean = NUMERIC_REGEX.test(s);
+        // A string is encodable iff each character is in the range 0 to 9.
+        QrSegment.NUMERIC_REGEX = /^[0-9]*$/;
+        // Describes precisely all strings that are encodable in alphanumeric mode. To test
+        // whether a string s is encodable: let ok: boolean = ALPHANUMERIC_REGEX.test(s);
+        // A string is encodable iff each character is in the following set: 0 to 9, A to Z
+        // (uppercase only), space, dollar, percent, asterisk, plus, hyphen, period, slash, colon.
+        QrSegment.ALPHANUMERIC_REGEX = /^[A-Z0-9 $%*+.\/:-]*$/;
+        // The set of all legal characters in alphanumeric mode,
+        // where each character value maps to the index in the string.
+        QrSegment.ALPHANUMERIC_CHARSET = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:";
+        return QrSegment;
+    }());
+    qrcodegen.QrSegment = QrSegment;
+})(qrcodegen || (qrcodegen = {}));
+/*---- Public helper enumeration ----*/
+(function (qrcodegen) {
+    var QrCode;
+    (function (QrCode) {
+        /*
+         * The error correction level in a QR Code symbol. Immutable.
+         */
+        var Ecc = /** @class */ (function () {
+            /*-- Constructor and fields --*/
+            function Ecc(
+            // In the range 0 to 3 (unsigned 2-bit integer).
+            ordinal, 
+            // (Package-private) In the range 0 to 3 (unsigned 2-bit integer).
+            formatBits) {
+                this.ordinal = ordinal;
+                this.formatBits = formatBits;
+            }
+            /*-- Constants --*/
+            Ecc.LOW = new Ecc(0, 1); // The QR Code can tolerate about  7% erroneous codewords
+            Ecc.MEDIUM = new Ecc(1, 0); // The QR Code can tolerate about 15% erroneous codewords
+            Ecc.QUARTILE = new Ecc(2, 3); // The QR Code can tolerate about 25% erroneous codewords
+            Ecc.HIGH = new Ecc(3, 2); // The QR Code can tolerate about 30% erroneous codewords
+            return Ecc;
+        }());
+        QrCode.Ecc = Ecc;
+    })(QrCode = qrcodegen.QrCode || (qrcodegen.QrCode = {}));
+})(qrcodegen || (qrcodegen = {}));
+/*---- Public helper enumeration ----*/
+(function (qrcodegen) {
+    var QrSegment;
+    (function (QrSegment) {
+        /*
+         * Describes how a segment's data bits are interpreted. Immutable.
+         */
+        var Mode = /** @class */ (function () {
+            /*-- Constructor and fields --*/
+            function Mode(
+            // The mode indicator bits, which is a uint4 value (range 0 to 15).
+            modeBits, 
+            // Number of character count bits for three different version ranges.
+            numBitsCharCount) {
+                this.modeBits = modeBits;
+                this.numBitsCharCount = numBitsCharCount;
+            }
+            /*-- Method --*/
+            // (Package-private) Returns the bit width of the character count field for a segment in
+            // this mode in a QR Code at the given version number. The result is in the range [0, 16].
+            Mode.prototype.numCharCountBits = function (ver) {
+                return this.numBitsCharCount[Math.floor((ver + 7) / 17)];
+            };
+            /*-- Constants --*/
+            Mode.NUMERIC = new Mode(0x1, [10, 12, 14]);
+            Mode.ALPHANUMERIC = new Mode(0x2, [9, 11, 13]);
+            Mode.BYTE = new Mode(0x4, [8, 16, 16]);
+            Mode.KANJI = new Mode(0x8, [8, 10, 12]);
+            Mode.ECI = new Mode(0x7, [0, 0, 0]);
+            return Mode;
+        }());
+        QrSegment.Mode = Mode;
+    })(QrSegment = qrcodegen.QrSegment || (qrcodegen.QrSegment = {}));
+})(qrcodegen || (qrcodegen = {}));

external/qr-scanner

@@ -0,0 +1 @@
+Subproject commit ecd8a3425f5d222ded65a0c6a560a437e53c204c

external/qr-scanner-binaryData/README

@@ -0,0 +1,6 @@
+./qr-scanner-worker.min.js is modified from
+../qr-scanner/qr-scanner-worker.min.js. The only change is that instead
+of returning result.data, it returns result to allow access to
+result.binaryData.
+
+MIT Licensed

external/qr-scanner-binaryData/qr-scanner-worker.min.js

@@ -0,0 +1,86 @@
+'use strict';(function(){function S(a,b){let c=[],d="";b=a.readBits([8,16,16][b]);for(let d=0;d<b;d++){let b=a.readBits(8);c.push(b)}try{d+=decodeURIComponent(c.map((a)=>`%${("0"+a.toString(16)).substr(-2)}`).join(""))}catch(e){}return{bytes:c,text:d}}function T(a,b){a=new U(a);b=9>=b?0:26>=b?1:2;let c={text:"",bytes:[],chunks:[]};for(;4<=a.available();){var d=a.readBits(4);if(d===y.Terminator)return c;if(d===y.ECI)0===a.readBits(1)?c.chunks.push({type:u.ECI,assignmentNumber:a.readBits(7)}):0===a.readBits(1)?
+c.chunks.push({type:u.ECI,assignmentNumber:a.readBits(14)}):0===a.readBits(1)?c.chunks.push({type:u.ECI,assignmentNumber:a.readBits(21)}):c.chunks.push({type:u.ECI,assignmentNumber:-1});else if(d===y.Numeric){var e=a;d=[];for(var g="",f=e.readBits([10,12,14][b]);3<=f;){var h=e.readBits(10);if(1E3<=h)throw Error("Invalid numeric value above 999");var k=Math.floor(h/100),m=Math.floor(h/10)%10;h%=10;d.push(48+k,48+m,48+h);g+=k.toString()+m.toString()+h.toString();f-=3}if(2===f){f=e.readBits(7);if(100<=
+f)throw Error("Invalid numeric value above 99");e=Math.floor(f/10);f%=10;d.push(48+e,48+f);g+=e.toString()+f.toString()}else if(1===f){e=e.readBits(4);if(10<=e)throw Error("Invalid numeric value above 9");d.push(48+e);g+=e.toString()}d={bytes:d,text:g};c.text+=d.text;c.bytes.push(...d.bytes);c.chunks.push({type:u.Numeric,text:d.text})}else if(d===y.Alphanumeric){e=a;d=[];g="";for(f=e.readBits([9,11,13][b]);2<=f;)m=e.readBits(11),k=Math.floor(m/45),m%=45,d.push(B[k].charCodeAt(0),B[m].charCodeAt(0)),
+g+=B[k]+B[m],f-=2;1===f&&(e=e.readBits(6),d.push(B[e].charCodeAt(0)),g+=B[e]);d={bytes:d,text:g};c.text+=d.text;c.bytes.push(...d.bytes);c.chunks.push({type:u.Alphanumeric,text:d.text})}else if(d===y.Byte)d=S(a,b),c.text+=d.text,c.bytes.push(...d.bytes),c.chunks.push({type:u.Byte,bytes:d.bytes,text:d.text});else if(d===y.Kanji){g=a;d=[];e=g.readBits([8,10,12][b]);for(f=0;f<e;f++)k=g.readBits(13),k=Math.floor(k/192)<<8|k%192,k=7936>k?k+33088:k+49472,d.push(k>>8,k&255);g=(new TextDecoder("shift-jis")).decode(Uint8Array.from(d));
+d={bytes:d,text:g};c.text+=d.text;c.bytes.push(...d.bytes);c.chunks.push({type:u.Kanji,bytes:d.bytes,text:d.text})}}if(0===a.available()||0===a.readBits(a.available()))return c}function J(a,b){return a^b}function V(a,b,c,d){b.degree()<c.degree()&&([b,c]=[c,b]);let e=a.zero;for(var g=a.one;c.degree()>=d/2;){var f=b;let d=e;b=c;e=g;if(b.isZero())return null;c=f;g=a.zero;f=b.getCoefficient(b.degree());for(f=a.inverse(f);c.degree()>=b.degree()&&!c.isZero();){let d=c.degree()-b.degree(),e=a.multiply(c.getCoefficient(c.degree()),
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+function M(a,b,c,d){var e=a.x-b.x+c.x-d.x;let g=a.y-b.y+c.y-d.y;if(0===e&&0===g)return{a11:b.x-a.x,a12:b.y-a.y,a13:0,a21:c.x-b.x,a22:c.y-b.y,a23:0,a31:a.x,a32:a.y,a33:1};{let h=b.x-c.x;var f=d.x-c.x;let k=b.y-c.y,m=d.y-c.y;c=h*m-f*k;f=(e*m-f*g)/c;e=(h*g-e*k)/c;return{a11:b.x-a.x+f*b.x,a12:b.y-a.y+f*b.y,a13:f,a21:d.x-a.x+e*d.x,a22:d.y-a.y+e*d.y,a23:e,a31:a.x,a32:a.y,a33:1}}}function ea(a,b,c,d){a=M(a,b,c,d);return{a11:a.a22*a.a33-a.a23*a.a32,a12:a.a13*a.a32-a.a12*a.a33,a13:a.a12*a.a23-a.a13*a.a22,
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+b.score);d=15<=l&&d.length?d[0]:q;return{alignmentPattern:{x:d.x,y:d.y},bottomLeft:{x:p.x,y:p.y},dimension:n,topLeft:{x:m.x,y:m.y},topRight:{x:k.x,y:k.y}}}function P(a){let b=ja(a);if(!b)return null;a=fa(a,b);var c=a.matrix;if(null==c)c=null;else{var d=L(c);if(d)c=d;else{for(d=0;d<c.width;d++)for(let a=d+1;a<c.height;a++)c.get(d,a)!==c.get(a,d)&&(c.set(d,a,!c.get(d,a)),c.set(a,d,!c.get(a,d)));c=L(c)}}return c?{binaryData:c.bytes,data:c.text,chunks:c.chunks,location:{topRightCorner:a.mappingFunction(b.dimension,
+0),topLeftCorner:a.mappingFunction(0,0),bottomRightCorner:a.mappingFunction(b.dimension,b.dimension),bottomLeftCorner:a.mappingFunction(0,b.dimension),topRightFinderPattern:b.topRight,topLeftFinderPattern:b.topLeft,bottomLeftFinderPattern:b.bottomLeft,bottomRightAlignmentPattern:b.alignmentPattern}}:null}function Q(a,b){Object.keys(b).forEach((c)=>{a[c]=b[c]})}function I(a,b,c,d={}){let e=Object.create(null);Q(e,ka);Q(e,d);d="onlyInvert"===e.inversionAttempts||"invertFirst"===e.inversionAttempts;
+var g="attemptBoth"===e.inversionAttempts||"invertFirst"===e.inversionAttempts;var f=e.greyScaleWeights,h=e.canOverwriteImage,k=b*c;if(a.length!==4*k)throw Error("Malformed data passed to binarizer.");var m=0;if(h){var p=new Uint8ClampedArray(a.buffer,m,k);m+=k}p=new R(b,c,p);if(f.useIntegerApproximation)for(var n=0;n<c;n++)for(var l=0;l<b;l++){var q=4*(n*b+l);p.set(l,n,f.red*a[q]+f.green*a[q+1]+f.blue*a[q+2]+128>>8)}else for(n=0;n<c;n++)for(l=0;l<b;l++)q=4*(n*b+l),p.set(l,n,f.red*a[q]+f.green*a[q+
+1]+f.blue*a[q+2]);f=Math.ceil(b/8);n=Math.ceil(c/8);l=f*n;if(h){var r=new Uint8ClampedArray(a.buffer,m,l);m+=l}r=new R(f,n,r);for(l=0;l<n;l++)for(q=0;q<f;q++){var u=0,v=Infinity,t=0;for(let a=0;8>a;a++)for(let b=0;8>b;b++){let c=p.get(8*q+b,8*l+a);u+=c;v=Math.min(v,c);t=Math.max(t,c)}u/=Math.pow(8,2);24>=t-v&&(u=v/2,0<l&&0<q&&(t=(r.get(q,l-1)+2*r.get(q-1,l)+r.get(q-1,l-1))/4,v<t&&(u=t)));r.set(q,l,u)}h?(l=new Uint8ClampedArray(a.buffer,m,k),m+=k,l=new A(l,b)):l=A.createEmpty(b,c);q=null;g&&(h?(a=
+new Uint8ClampedArray(a.buffer,m,k),q=new A(a,b)):q=A.createEmpty(b,c));for(b=0;b<n;b++)for(a=0;a<f;a++){c=f-3;c=2>a?2:a>c?c:a;h=n-3;h=2>b?2:b>h?h:b;k=0;for(m=-2;2>=m;m++)for(v=-2;2>=v;v++)k+=r.get(c+m,h+v);c=k/25;for(h=0;8>h;h++)for(k=0;8>k;k++)m=8*a+h,v=8*b+k,t=p.get(m,v),l.set(m,v,t<=c),g&&q.set(m,v,!(t<=c))}g=g?{binarized:l,inverted:q}:{binarized:l};let {binarized:w,inverted:x}=g;(g=P(d?x:w))||"attemptBoth"!==e.inversionAttempts&&"invertFirst"!==e.inversionAttempts||(g=P(d?w:x));return g}class A{static createEmpty(a,
+b){return new A(new Uint8ClampedArray(a*b),a)}constructor(a,b){this.width=b;this.height=a.length/b;this.data=a}get(a,b){return 0>a||a>=this.width||0>b||b>=this.height?!1:!!this.data[b*this.width+a]}set(a,b,c){this.data[b*this.width+a]=c?1:0}setRegion(a,b,c,d,e){for(let g=b;g<b+d;g++)for(let b=a;b<a+c;b++)this.set(b,g,!!e)}}class R{constructor(a,b,c){this.width=a;a*=b;if(c&&c.length!==a)throw Error("Wrong buffer size");this.data=c||new Uint8ClampedArray(a)}get(a,b){return this.data[b*this.width+a]}set(a,
+b,c){this.data[b*this.width+a]=c}}class U{constructor(a){this.bitOffset=this.byteOffset=0;this.bytes=a}readBits(a){if(1>a||32<a||a>this.available())throw Error("Cannot read "+a.toString()+" bits");var b=0;if(0<this.bitOffset){b=8-this.bitOffset;var c=a<b?a:b;b-=c;b=(this.bytes[this.byteOffset]&255>>8-c<<b)>>b;a-=c;this.bitOffset+=c;8===this.bitOffset&&(this.bitOffset=0,this.byteOffset++)}if(0<a){for(;8<=a;)b=b<<8|this.bytes[this.byteOffset]&255,this.byteOffset++,a-=8;0<a&&(c=8-a,b=b<<a|(this.bytes[this.byteOffset]&
+255>>c<<c)>>c,this.bitOffset+=a)}return b}available(){return 8*(this.bytes.length-this.byteOffset)-this.bitOffset}}var u;(function(a){a.Numeric="numeric";a.Alphanumeric="alphanumeric";a.Byte="byte";a.Kanji="kanji";a.ECI="eci"})(u||(u={}));var y;(function(a){a[a.Terminator=0]="Terminator";a[a.Numeric=1]="Numeric";a[a.Alphanumeric=2]="Alphanumeric";a[a.Byte=4]="Byte";a[a.Kanji=8]="Kanji";a[a.ECI=7]="ECI"})(y||(y={}));let B="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:".split("");class w{constructor(a,
+b){if(0===b.length)throw Error("No coefficients.");this.field=a;let c=b.length;if(1<c&&0===b[0]){let d=1;for(;d<c&&0===b[d];)d++;if(d===c)this.coefficients=a.zero.coefficients;else for(this.coefficients=new Uint8ClampedArray(c-d),a=0;a<this.coefficients.length;a++)this.coefficients[a]=b[d+a]}else this.coefficients=b}degree(){return this.coefficients.length-1}isZero(){return 0===this.coefficients[0]}getCoefficient(a){return this.coefficients[this.coefficients.length-1-a]}addOrSubtract(a){if(this.isZero())return a;
+if(a.isZero())return this;let b=this.coefficients;a=a.coefficients;b.length>a.length&&([b,a]=[a,b]);let c=new Uint8ClampedArray(a.length),d=a.length-b.length;for(var e=0;e<d;e++)c[e]=a[e];for(e=d;e<a.length;e++)c[e]=b[e-d]^a[e];return new w(this.field,c)}multiply(a){if(0===a)return this.field.zero;if(1===a)return this;let b=this.coefficients.length,c=new Uint8ClampedArray(b);for(let d=0;d<b;d++)c[d]=this.field.multiply(this.coefficients[d],a);return new w(this.field,c)}multiplyPoly(a){if(this.isZero()||
+a.isZero())return this.field.zero;let b=this.coefficients,c=b.length;a=a.coefficients;let d=a.length,e=new Uint8ClampedArray(c+d-1);for(let h=0;h<c;h++){let c=b[h];for(let b=0;b<d;b++){var g=h+b,f=this.field.multiply(c,a[b]);e[g]=e[h+b]^f}}return new w(this.field,e)}multiplyByMonomial(a,b){if(0>a)throw Error("Invalid degree less than 0");if(0===b)return this.field.zero;let c=this.coefficients.length;a=new Uint8ClampedArray(c+a);for(let d=0;d<c;d++)a[d]=this.field.multiply(this.coefficients[d],b);
+return new w(this.field,a)}evaluateAt(a){let b=0;if(0===a)return this.getCoefficient(0);let c=this.coefficients.length;if(1===a)return this.coefficients.forEach((a)=>{b^=a}),b;b=this.coefficients[0];for(let d=1;d<c;d++)b=J(this.field.multiply(a,b),this.coefficients[d]);return b}}class X{constructor(a,b,c){this.primitive=a;this.size=b;this.generatorBase=c;this.expTable=Array(this.size);this.logTable=Array(this.size);a=1;for(b=0;b<this.size;b++)this.expTable[b]=a,a*=2,a>=this.size&&(a=(a^this.primitive)&
+this.size-1);for(a=0;a<this.size-1;a++)this.logTable[this.expTable[a]]=a;this.zero=new w(this,Uint8ClampedArray.from([0]));this.one=new w(this,Uint8ClampedArray.from([1]))}multiply(a,b){return 0===a||0===b?0:this.expTable[(this.logTable[a]+this.logTable[b])%(this.size-1)]}inverse(a){if(0===a)throw Error("Can't invert 0");return this.expTable[this.size-this.logTable[a]-1]}buildMonomial(a,b){if(0>a)throw Error("Invalid monomial degree less than 0");if(0===b)return this.zero;a=new Uint8ClampedArray(a+
+1);a[0]=b;return new w(this,a)}log(a){if(0===a)throw Error("Can't take log(0)");return this.logTable[a]}exp(a){return this.expTable[a]}}let K=[{infoBits:null,versionNumber:1,alignmentPatternCenters:[],errorCorrectionLevels:[{ecCodewordsPerBlock:7,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:19}]},{ecCodewordsPerBlock:10,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:16}]},{ecCodewordsPerBlock:13,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:13}]},{ecCodewordsPerBlock:17,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:9}]}]},
+{infoBits:null,versionNumber:2,alignmentPatternCenters:[6,18],errorCorrectionLevels:[{ecCodewordsPerBlock:10,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:34}]},{ecCodewordsPerBlock:16,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:28}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:22}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:16}]}]},{infoBits:null,versionNumber:3,alignmentPatternCenters:[6,22],errorCorrectionLevels:[{ecCodewordsPerBlock:15,ecBlocks:[{numBlocks:1,
+dataCodewordsPerBlock:55}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:13}]}]},{infoBits:null,versionNumber:4,alignmentPatternCenters:[6,26],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:80}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:32}]},{ecCodewordsPerBlock:26,
+ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:24}]},{ecCodewordsPerBlock:16,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:9}]}]},{infoBits:null,versionNumber:5,alignmentPatternCenters:[6,30],errorCorrectionLevels:[{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:108}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:43}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:15},{numBlocks:2,dataCodewordsPerBlock:16}]},{ecCodewordsPerBlock:22,
+ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:11},{numBlocks:2,dataCodewordsPerBlock:12}]}]},{infoBits:null,versionNumber:6,alignmentPatternCenters:[6,34],errorCorrectionLevels:[{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:68}]},{ecCodewordsPerBlock:16,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:27}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:19}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:15}]}]},{infoBits:31892,versionNumber:7,
+alignmentPatternCenters:[6,22,38],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:78}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:31}]},{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:4,dataCodewordsPerBlock:15}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:13},{numBlocks:1,dataCodewordsPerBlock:14}]}]},{infoBits:34236,versionNumber:8,alignmentPatternCenters:[6,24,42],
+errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:97}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:38},{numBlocks:2,dataCodewordsPerBlock:39}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:18},{numBlocks:2,dataCodewordsPerBlock:19}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:14},{numBlocks:2,dataCodewordsPerBlock:15}]}]},{infoBits:39577,versionNumber:9,alignmentPatternCenters:[6,
+26,46],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:36},{numBlocks:2,dataCodewordsPerBlock:37}]},{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:16},{numBlocks:4,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:12},{numBlocks:4,dataCodewordsPerBlock:13}]}]},{infoBits:42195,versionNumber:10,alignmentPatternCenters:[6,
+28,50],errorCorrectionLevels:[{ecCodewordsPerBlock:18,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:68},{numBlocks:2,dataCodewordsPerBlock:69}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:43},{numBlocks:1,dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:19},{numBlocks:2,dataCodewordsPerBlock:20}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:15},{numBlocks:2,dataCodewordsPerBlock:16}]}]},{infoBits:48118,
+versionNumber:11,alignmentPatternCenters:[6,30,54],errorCorrectionLevels:[{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:81}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:50},{numBlocks:4,dataCodewordsPerBlock:51}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:22},{numBlocks:4,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:12},{numBlocks:8,dataCodewordsPerBlock:13}]}]},{infoBits:51042,
+versionNumber:12,alignmentPatternCenters:[6,32,58],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:92},{numBlocks:2,dataCodewordsPerBlock:93}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:36},{numBlocks:2,dataCodewordsPerBlock:37}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:20},{numBlocks:6,dataCodewordsPerBlock:21}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:14},{numBlocks:4,
+dataCodewordsPerBlock:15}]}]},{infoBits:55367,versionNumber:13,alignmentPatternCenters:[6,34,62],errorCorrectionLevels:[{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:107}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:37},{numBlocks:1,dataCodewordsPerBlock:38}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:20},{numBlocks:4,dataCodewordsPerBlock:21}]},{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:11},{numBlocks:4,
+dataCodewordsPerBlock:12}]}]},{infoBits:58893,versionNumber:14,alignmentPatternCenters:[6,26,46,66],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:115},{numBlocks:1,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:40},{numBlocks:5,dataCodewordsPerBlock:41}]},{ecCodewordsPerBlock:20,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:16},{numBlocks:5,dataCodewordsPerBlock:17}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:11,
+dataCodewordsPerBlock:12},{numBlocks:5,dataCodewordsPerBlock:13}]}]},{infoBits:63784,versionNumber:15,alignmentPatternCenters:[6,26,48,70],errorCorrectionLevels:[{ecCodewordsPerBlock:22,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:87},{numBlocks:1,dataCodewordsPerBlock:88}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:41},{numBlocks:5,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:24},{numBlocks:7,dataCodewordsPerBlock:25}]},
+{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:12},{numBlocks:7,dataCodewordsPerBlock:13}]}]},{infoBits:68472,versionNumber:16,alignmentPatternCenters:[6,26,50,74],errorCorrectionLevels:[{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:98},{numBlocks:1,dataCodewordsPerBlock:99}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:45},{numBlocks:3,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:19},
+{numBlocks:2,dataCodewordsPerBlock:20}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:15},{numBlocks:13,dataCodewordsPerBlock:16}]}]},{infoBits:70749,versionNumber:17,alignmentPatternCenters:[6,30,54,78],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:107},{numBlocks:5,dataCodewordsPerBlock:108}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:46},{numBlocks:1,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:28,
+ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:22},{numBlocks:15,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:17,dataCodewordsPerBlock:15}]}]},{infoBits:76311,versionNumber:18,alignmentPatternCenters:[6,30,56,82],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:120},{numBlocks:1,dataCodewordsPerBlock:121}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:9,dataCodewordsPerBlock:43},{numBlocks:4,
+dataCodewordsPerBlock:44}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:22},{numBlocks:1,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:14},{numBlocks:19,dataCodewordsPerBlock:15}]}]},{infoBits:79154,versionNumber:19,alignmentPatternCenters:[6,30,58,86],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:113},{numBlocks:4,dataCodewordsPerBlock:114}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:3,
+dataCodewordsPerBlock:44},{numBlocks:11,dataCodewordsPerBlock:45}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:21},{numBlocks:4,dataCodewordsPerBlock:22}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:9,dataCodewordsPerBlock:13},{numBlocks:16,dataCodewordsPerBlock:14}]}]},{infoBits:84390,versionNumber:20,alignmentPatternCenters:[6,34,62,90],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:107},{numBlocks:5,dataCodewordsPerBlock:108}]},
+{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:41},{numBlocks:13,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:24},{numBlocks:5,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:15},{numBlocks:10,dataCodewordsPerBlock:16}]}]},{infoBits:87683,versionNumber:21,alignmentPatternCenters:[6,28,50,72,94],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:116},
+{numBlocks:4,dataCodewordsPerBlock:117}]},{ecCodewordsPerBlock:26,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:42}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:22},{numBlocks:6,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:16},{numBlocks:6,dataCodewordsPerBlock:17}]}]},{infoBits:92361,versionNumber:22,alignmentPatternCenters:[6,26,50,74,98],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:111},
+{numBlocks:7,dataCodewordsPerBlock:112}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:24},{numBlocks:16,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:24,ecBlocks:[{numBlocks:34,dataCodewordsPerBlock:13}]}]},{infoBits:96236,versionNumber:23,alignmentPatternCenters:[6,30,54,74,102],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:121},{numBlocks:5,dataCodewordsPerBlock:122}]},
+{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:47},{numBlocks:14,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:24},{numBlocks:14,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:16,dataCodewordsPerBlock:15},{numBlocks:14,dataCodewordsPerBlock:16}]}]},{infoBits:102084,versionNumber:24,alignmentPatternCenters:[6,28,54,80,106],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:117},
+{numBlocks:4,dataCodewordsPerBlock:118}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:45},{numBlocks:14,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:24},{numBlocks:16,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:30,dataCodewordsPerBlock:16},{numBlocks:2,dataCodewordsPerBlock:17}]}]},{infoBits:102881,versionNumber:25,alignmentPatternCenters:[6,32,58,84,110],errorCorrectionLevels:[{ecCodewordsPerBlock:26,
+ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:106},{numBlocks:4,dataCodewordsPerBlock:107}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:47},{numBlocks:13,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:24},{numBlocks:22,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:22,dataCodewordsPerBlock:15},{numBlocks:13,dataCodewordsPerBlock:16}]}]},{infoBits:110507,versionNumber:26,alignmentPatternCenters:[6,
+30,58,86,114],errorCorrectionLevels:[{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:114},{numBlocks:2,dataCodewordsPerBlock:115}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:46},{numBlocks:4,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:28,dataCodewordsPerBlock:22},{numBlocks:6,dataCodewordsPerBlock:23}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:33,dataCodewordsPerBlock:16},{numBlocks:4,dataCodewordsPerBlock:17}]}]},
+{infoBits:110734,versionNumber:27,alignmentPatternCenters:[6,34,62,90,118],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:122},{numBlocks:4,dataCodewordsPerBlock:123}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:22,dataCodewordsPerBlock:45},{numBlocks:3,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:8,dataCodewordsPerBlock:23},{numBlocks:26,dataCodewordsPerBlock:24}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:15},
+{numBlocks:28,dataCodewordsPerBlock:16}]}]},{infoBits:117786,versionNumber:28,alignmentPatternCenters:[6,26,50,74,98,122],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:117},{numBlocks:10,dataCodewordsPerBlock:118}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:3,dataCodewordsPerBlock:45},{numBlocks:23,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:24},{numBlocks:31,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,
+ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:15},{numBlocks:31,dataCodewordsPerBlock:16}]}]},{infoBits:119615,versionNumber:29,alignmentPatternCenters:[6,30,54,78,102,126],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:7,dataCodewordsPerBlock:116},{numBlocks:7,dataCodewordsPerBlock:117}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:21,dataCodewordsPerBlock:45},{numBlocks:7,dataCodewordsPerBlock:46}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:1,dataCodewordsPerBlock:23},{numBlocks:37,
+dataCodewordsPerBlock:24}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:15},{numBlocks:26,dataCodewordsPerBlock:16}]}]},{infoBits:126325,versionNumber:30,alignmentPatternCenters:[6,26,52,78,104,130],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:5,dataCodewordsPerBlock:115},{numBlocks:10,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:47},{numBlocks:10,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,
+ecBlocks:[{numBlocks:15,dataCodewordsPerBlock:24},{numBlocks:25,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:23,dataCodewordsPerBlock:15},{numBlocks:25,dataCodewordsPerBlock:16}]}]},{infoBits:127568,versionNumber:31,alignmentPatternCenters:[6,30,56,82,108,134],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:13,dataCodewordsPerBlock:115},{numBlocks:3,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:46},
+{numBlocks:29,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:42,dataCodewordsPerBlock:24},{numBlocks:1,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:23,dataCodewordsPerBlock:15},{numBlocks:28,dataCodewordsPerBlock:16}]}]},{infoBits:133589,versionNumber:32,alignmentPatternCenters:[6,34,60,86,112,138],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:115}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:10,
+dataCodewordsPerBlock:46},{numBlocks:23,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:24},{numBlocks:35,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:15},{numBlocks:35,dataCodewordsPerBlock:16}]}]},{infoBits:136944,versionNumber:33,alignmentPatternCenters:[6,30,58,86,114,142],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:115},{numBlocks:1,dataCodewordsPerBlock:116}]},
+{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:14,dataCodewordsPerBlock:46},{numBlocks:21,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:29,dataCodewordsPerBlock:24},{numBlocks:19,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:11,dataCodewordsPerBlock:15},{numBlocks:46,dataCodewordsPerBlock:16}]}]},{infoBits:141498,versionNumber:34,alignmentPatternCenters:[6,34,62,90,118,146],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:13,dataCodewordsPerBlock:115},
+{numBlocks:6,dataCodewordsPerBlock:116}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:14,dataCodewordsPerBlock:46},{numBlocks:23,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:44,dataCodewordsPerBlock:24},{numBlocks:7,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:59,dataCodewordsPerBlock:16},{numBlocks:1,dataCodewordsPerBlock:17}]}]},{infoBits:145311,versionNumber:35,alignmentPatternCenters:[6,30,54,78,102,126,150],errorCorrectionLevels:[{ecCodewordsPerBlock:30,
+ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:121},{numBlocks:7,dataCodewordsPerBlock:122}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:12,dataCodewordsPerBlock:47},{numBlocks:26,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:39,dataCodewordsPerBlock:24},{numBlocks:14,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:22,dataCodewordsPerBlock:15},{numBlocks:41,dataCodewordsPerBlock:16}]}]},{infoBits:150283,versionNumber:36,alignmentPatternCenters:[6,
+24,50,76,102,128,154],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:121},{numBlocks:14,dataCodewordsPerBlock:122}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:6,dataCodewordsPerBlock:47},{numBlocks:34,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:46,dataCodewordsPerBlock:24},{numBlocks:10,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:2,dataCodewordsPerBlock:15},{numBlocks:64,dataCodewordsPerBlock:16}]}]},
+{infoBits:152622,versionNumber:37,alignmentPatternCenters:[6,28,54,80,106,132,158],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:17,dataCodewordsPerBlock:122},{numBlocks:4,dataCodewordsPerBlock:123}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:29,dataCodewordsPerBlock:46},{numBlocks:14,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:49,dataCodewordsPerBlock:24},{numBlocks:10,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:24,
+dataCodewordsPerBlock:15},{numBlocks:46,dataCodewordsPerBlock:16}]}]},{infoBits:158308,versionNumber:38,alignmentPatternCenters:[6,32,58,84,110,136,162],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:4,dataCodewordsPerBlock:122},{numBlocks:18,dataCodewordsPerBlock:123}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:13,dataCodewordsPerBlock:46},{numBlocks:32,dataCodewordsPerBlock:47}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:48,dataCodewordsPerBlock:24},{numBlocks:14,dataCodewordsPerBlock:25}]},
+{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:42,dataCodewordsPerBlock:15},{numBlocks:32,dataCodewordsPerBlock:16}]}]},{infoBits:161089,versionNumber:39,alignmentPatternCenters:[6,26,54,82,110,138,166],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:20,dataCodewordsPerBlock:117},{numBlocks:4,dataCodewordsPerBlock:118}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:40,dataCodewordsPerBlock:47},{numBlocks:7,dataCodewordsPerBlock:48}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:43,
+dataCodewordsPerBlock:24},{numBlocks:22,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:10,dataCodewordsPerBlock:15},{numBlocks:67,dataCodewordsPerBlock:16}]}]},{infoBits:167017,versionNumber:40,alignmentPatternCenters:[6,30,58,86,114,142,170],errorCorrectionLevels:[{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:19,dataCodewordsPerBlock:118},{numBlocks:6,dataCodewordsPerBlock:119}]},{ecCodewordsPerBlock:28,ecBlocks:[{numBlocks:18,dataCodewordsPerBlock:47},{numBlocks:31,dataCodewordsPerBlock:48}]},
+{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:34,dataCodewordsPerBlock:24},{numBlocks:34,dataCodewordsPerBlock:25}]},{ecCodewordsPerBlock:30,ecBlocks:[{numBlocks:20,dataCodewordsPerBlock:15},{numBlocks:61,dataCodewordsPerBlock:16}]}]}],ca=[{bits:21522,formatInfo:{errorCorrectionLevel:1,dataMask:0}},{bits:20773,formatInfo:{errorCorrectionLevel:1,dataMask:1}},{bits:24188,formatInfo:{errorCorrectionLevel:1,dataMask:2}},{bits:23371,formatInfo:{errorCorrectionLevel:1,dataMask:3}},{bits:17913,formatInfo:{errorCorrectionLevel:1,
+dataMask:4}},{bits:16590,formatInfo:{errorCorrectionLevel:1,dataMask:5}},{bits:20375,formatInfo:{errorCorrectionLevel:1,dataMask:6}},{bits:19104,formatInfo:{errorCorrectionLevel:1,dataMask:7}},{bits:30660,formatInfo:{errorCorrectionLevel:0,dataMask:0}},{bits:29427,formatInfo:{errorCorrectionLevel:0,dataMask:1}},{bits:32170,formatInfo:{errorCorrectionLevel:0,dataMask:2}},{bits:30877,formatInfo:{errorCorrectionLevel:0,dataMask:3}},{bits:26159,formatInfo:{errorCorrectionLevel:0,dataMask:4}},{bits:25368,
+formatInfo:{errorCorrectionLevel:0,dataMask:5}},{bits:27713,formatInfo:{errorCorrectionLevel:0,dataMask:6}},{bits:26998,formatInfo:{errorCorrectionLevel:0,dataMask:7}},{bits:5769,formatInfo:{errorCorrectionLevel:3,dataMask:0}},{bits:5054,formatInfo:{errorCorrectionLevel:3,dataMask:1}},{bits:7399,formatInfo:{errorCorrectionLevel:3,dataMask:2}},{bits:6608,formatInfo:{errorCorrectionLevel:3,dataMask:3}},{bits:1890,formatInfo:{errorCorrectionLevel:3,dataMask:4}},{bits:597,formatInfo:{errorCorrectionLevel:3,
+dataMask:5}},{bits:3340,formatInfo:{errorCorrectionLevel:3,dataMask:6}},{bits:2107,formatInfo:{errorCorrectionLevel:3,dataMask:7}},{bits:13663,formatInfo:{errorCorrectionLevel:2,dataMask:0}},{bits:12392,formatInfo:{errorCorrectionLevel:2,dataMask:1}},{bits:16177,formatInfo:{errorCorrectionLevel:2,dataMask:2}},{bits:14854,formatInfo:{errorCorrectionLevel:2,dataMask:3}},{bits:9396,formatInfo:{errorCorrectionLevel:2,dataMask:4}},{bits:8579,formatInfo:{errorCorrectionLevel:2,dataMask:5}},{bits:11994,
+formatInfo:{errorCorrectionLevel:2,dataMask:6}},{bits:11245,formatInfo:{errorCorrectionLevel:2,dataMask:7}}],Z=[(a)=>0===(a.y+a.x)%2,(a)=>0===a.y%2,(a)=>0===a.x%3,(a)=>0===(a.y+a.x)%3,(a)=>0===(Math.floor(a.y/2)+Math.floor(a.x/3))%2,(a)=>0===a.x*a.y%2+a.x*a.y%3,(a)=>0===(a.y*a.x%2+a.y*a.x%3)%2,(a)=>0===((a.y+a.x)%2+a.y*a.x%3)%2],x=(a,b)=>Math.sqrt(Math.pow(b.x-a.x,2)+Math.pow(b.y-a.y,2)),ka={inversionAttempts:"attemptBoth",greyScaleWeights:{red:.2126,green:.7152,blue:.0722,useIntegerApproximation:!1},
+canOverwriteImage:!0};I.default=I;let H="dontInvert",D={red:77,green:150,blue:29,useIntegerApproximation:!0};self.onmessage=(a)=>{let b=a.data.data;switch(a.data.type){case "decode":a=I(b.data,b.width,b.height,{inversionAttempts:H,greyScaleWeights:D});self.postMessage({type:"qrResult",data:a?a:null});break;case "grayscaleWeights":D.red=b.red;D.green=b.green;D.blue=b.blue;D.useIntegerApproximation=b.useIntegerApproximation;break;case "inversionMode":switch(b){case "original":H="dontInvert";break;
+case "invert":H="attemptBoth";break;case "both":H="attemptBoth";break;default:throw Error("Invalid inversion mode");}break;case "close":self.close()}}})();
+//# sourceMappingURL=qr-scanner-worker.min.js.map

nginx-site.example

@@ -18,10 +18,11 @@ server {
 
 	server_name _;
 
-	location / {
+	location /camera/ {
-		try_files $uri $uri/ @proxy_to_app;
+		alias /path/to/minimal-webrtc/wwwroot/;
+		try_files $uri $uri/ @minimal_webrtc;
 	}
-	location @proxy_to_app {
+	location @minimal_webrtc {
 		proxy_pass http://minimal-webrtc;
 
 		proxy_http_version 1.1;

wwwroot/index.html

@@ -0,0 +1 @@
+../camera/templates/index.html

wwwroot/static

@@ -0,0 +1 @@
+../camera/static