optimized model loader

dev-server.crt

@@ -0,0 +1,31 @@
+-----BEGIN CERTIFICATE-----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=
+-----END CERTIFICATE-----

dev-server.js

@@ -9,21 +9,25 @@
   - passthrough data compression
 */
 
+const process = require('process');
 const fs = require('fs');
 const zlib = require('zlib');
-const path = require('path');
 const http2 = require('http2');
+const path = require('path');
 const chokidar = require('chokidar');
-const process = require('process');
 const esbuild = require('esbuild');
 const log = require('@vladmandic/pilogger');
 
 // app configuration
-// must provide your own server key and certificate, can be self-signed
+// you can provide your server key and certificate or use provided self-signed ones
+// self-signed certificate generated using:
+// openssl req -x509 -newkey rsa:4096 -nodes -keyout dev-server.key -out dev-server.crt -days 365 -subj "/C=US/ST=Florida/L=Miami/O=@vladmandic"
 // client app does not work without secure server since browsers enforce https for webcam access
 const options = {
-  key: fs.readFileSync('/home/vlado/dev/piproxy/cert/private.pem'),
+  // key: fs.readFileSync('/home/vlado/dev/piproxy/cert/private.pem'),
-  cert: fs.readFileSync('/home/vlado/dev/piproxy/cert/fullchain.pem'),
+  // cert: fs.readFileSync('/home/vlado/dev/piproxy/cert/fullchain.pem'),
+  key: fs.readFileSync('./dev-server.key'),
+  cert: fs.readFileSync('./dev-server.crt'),
   root: '.',
   default: 'demo/index.html',
   port: 8000,
@@ -57,7 +61,7 @@ async function build(f, msg) {
   if (!es) es = await esbuild.startService();
   // common build options
   const cfg = {
-    minify: false,
+    minify: true,
     bundle: true,
     sourcemap: true,
     logLevel: 'error',
@@ -79,8 +83,10 @@ async function build(f, msg) {
     cfg.outfile = 'dist/demo-browser-index.js';
     cfg.metafile = 'dist/demo-browser-index.json';
     await es.build(cfg);
+    // done
     log.state('Build complete');
   } catch (err) {
+    // catch errors and print where it occured
     log.error('Build error', JSON.stringify(err.errors || err, null, 2));
   }
 }
@@ -97,6 +103,7 @@ async function watch() {
     useFsEvents: false,
     atomic: true,
   });
+  // single event handler for file add/change/delete
   watcher
     .on('add', (evt) => build(evt, 'add'))
     .on('change', (evt) => build(evt, 'modify'))
@@ -106,17 +113,16 @@ async function watch() {
 }
 
 // get file content for a valid url request
-function content(url) {
+function handle(url) {
   return new Promise((resolve) => {
     let obj = { ok: false };
     obj.file = url;
     if (!fs.existsSync(obj.file)) resolve(null);
     obj.stat = fs.statSync(obj.file);
-    // should really use streams here instead of reading entire content in-memory, but this is micro-http2 not intended to serve huge files
     if (obj.stat.isFile()) obj.ok = true;
     if (!obj.ok && obj.stat.isDirectory()) {
       obj.file = path.join(obj.file, options.default);
-      obj = content(obj.file);
+      obj = handle(obj.file);
     }
     resolve(obj);
   });
@@ -124,7 +130,8 @@ function content(url) {
 
 // process http requests
 async function httpRequest(req, res) {
-  content(path.join(__dirname, options.root, req.url)).then((result) => {
+  handle(path.join(__dirname, options.root, req.url)).then((result) => {
+    // get original ip of requestor, regardless if it's behind proxy or not
     const forwarded = (req.headers['forwarded'] || '').match(/for="\[(.*)\]:/);
     const ip = (Array.isArray(forwarded) ? forwarded[1] : null) || req.headers['x-forwarded-for'] || req.ip || req.socket.remoteAddress;
     if (!result || !result.ok) {
@@ -136,7 +143,8 @@ async function httpRequest(req, res) {
       const contentType = mime[ext] || 'application/octet-stream';
       const accept = req.headers['accept-encoding'] ? req.headers['accept-encoding'].includes('br') : false; // does target accept brotli compressed data
       res.writeHead(200, {
-        'Content-Language': 'en', 'Content-Type': contentType, 'Content-Encoding': accept ? 'br' : '', 'Last-Modified': result.stat.mtime, 'Cache-Control': 'no-cache', 'X-Powered-By': `NodeJS/${process.version}`, // 'Content-Length': result.stat.size,
+        // 'Content-Length': result.stat.size, // not using as it's misleading for compressed streams
+        'Content-Language': 'en', 'Content-Type': contentType, 'Content-Encoding': accept ? 'br' : '', 'Last-Modified': result.stat.mtime, 'Cache-Control': 'no-cache', 'X-Powered-By': `NodeJS/${process.version}`,
       });
       const compress = zlib.createBrotliCompress({ params: { [zlib.constants.BROTLI_PARAM_QUALITY]: 5 } }); // instance of brotli compression with level 5
       const stream = fs.createReadStream(result.file);

dev-server.key

@@ -0,0 +1,52 @@
+-----BEGIN PRIVATE KEY-----
+MIIJQwIBADANBgkqhkiG9w0BAQEFAASCCS0wggkpAgEAAoICAQDSC88PF8NyLkag
+K5mAZ/d739SOU16l2Cx3zE35zZQhO29+1L4L+oMksLYipo+FMgtGO+MSzFsvGgKC
+s2sDSdfyoNSTZ3QaN4BAZ0sbq+wLcke7yRBTM/XIGOQfhqq8yC2q8/zXwUbZg0Us
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+NYR1fyWPoNXwr0KX2lpTP1QOzp9/Sd0iiJ8RPfXn8Xo26MStu4I52CZjS7yEMgJG
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+qIRta3H9KNw2Mhpkm77TtUSV/W5aOmY=
+-----END PRIVATE KEY-----

dist/demo-browser-index.json

@@ -23,7 +23,7 @@
       "imports": []
     },
     "dist/human.esm.js": {
-      "bytes": 1277954,
+      "bytes": 1278477,
       "imports": []
     }
   },
@@ -31,28 +31,28 @@
     "dist/demo-browser-index.js.map": {
       "imports": [],
       "inputs": {},
-      "bytes": 5531295
+      "bytes": 5520787
     },
     "dist/demo-browser-index.js": {
       "imports": [],
       "inputs": {
         "dist/human.esm.js": {
-          "bytesInOutput": 1664401
+          "bytesInOutput": 1288376
         },
         "dist/human.esm.js": {
-          "bytesInOutput": 8716
+          "bytesInOutput": 0
         },
         "demo/draw.js": {
-          "bytesInOutput": 7451
+          "bytesInOutput": 4708
         },
         "demo/menu.js": {
-          "bytesInOutput": 12462
+          "bytesInOutput": 9573
         },
         "demo/browser.js": {
-          "bytesInOutput": 15743
+          "bytesInOutput": 11364
         }
       },
-      "bytes": 1708895
+      "bytes": 1322785
     }
   }
 }

dist/human.esm.json

@@ -153,7 +153,7 @@
       "imports": []
     },
     "src/age/age.js": {
-      "bytes": 1766,
+      "bytes": 1908,
       "imports": [
         {
           "path": "node_modules/@tensorflow/tfjs/dist/tf.node.js"
@@ -224,7 +224,7 @@
       ]
     },
     "src/body/modelPoseNet.js": {
-      "bytes": 3539,
+      "bytes": 3658,
       "imports": [
         {
           "path": "node_modules/@tensorflow/tfjs/dist/tf.node.js"
@@ -277,7 +277,7 @@
       ]
     },
     "src/emotion/emotion.js": {
-      "bytes": 2778,
+      "bytes": 2924,
       "imports": [
         {
           "path": "node_modules/@tensorflow/tfjs/dist/tf.node.js"
@@ -288,7 +288,7 @@
       ]
     },
     "src/face/blazeface.js": {
-      "bytes": 7098,
+      "bytes": 7226,
       "imports": [
         {
           "path": "node_modules/@tensorflow/tfjs/dist/tf.node.js"
@@ -304,7 +304,7 @@
       ]
     },
     "src/face/facemesh.js": {
-      "bytes": 2355,
+      "bytes": 2603,
       "imports": [
         {
           "path": "node_modules/@tensorflow/tfjs/dist/tf.node.js"
@@ -360,7 +360,7 @@
       "imports": []
     },
     "src/gender/gender.js": {
-      "bytes": 3042,
+      "bytes": 3189,
       "imports": [
         {
           "path": "node_modules/@tensorflow/tfjs/dist/tf.node.js"
@@ -412,7 +412,7 @@
       ]
     },
     "src/hand/handpose.js": {
-      "bytes": 2839,
+      "bytes": 3095,
       "imports": [
         {
           "path": "node_modules/@tensorflow/tfjs/dist/tf.node.js"
@@ -433,7 +433,7 @@
       "imports": []
     },
     "src/human.js": {
-      "bytes": 14049,
+      "bytes": 13709,
       "imports": [
         {
           "path": "node_modules/@tensorflow/tfjs/dist/tf.node.js"
@@ -513,7 +513,7 @@
     "dist/human.esm.js.map": {
       "imports": [],
       "inputs": {},
-      "bytes": 5418185
+      "bytes": 5419375
     },
     "dist/human.esm.js": {
       "imports": [],
@@ -576,7 +576,7 @@
           "bytesInOutput": 760
         },
         "src/face/blazeface.js": {
-          "bytesInOutput": 3012
+          "bytesInOutput": 3091
         },
         "src/face/keypoints.js": {
           "bytesInOutput": 1946
@@ -597,19 +597,19 @@
           "bytesInOutput": 9991
         },
         "src/face/facemesh.js": {
-          "bytesInOutput": 1136
+          "bytesInOutput": 1286
         },
         "src/profile.js": {
           "bytesInOutput": 620
         },
         "src/age/age.js": {
-          "bytesInOutput": 893
+          "bytesInOutput": 972
         },
         "src/gender/gender.js": {
-          "bytesInOutput": 1389
+          "bytesInOutput": 1471
         },
         "src/emotion/emotion.js": {
-          "bytesInOutput": 1345
+          "bytesInOutput": 1428
         },
         "src/body/modelBase.js": {
           "bytesInOutput": 433
@@ -639,7 +639,7 @@
           "bytesInOutput": 1062
         },
         "src/body/modelPoseNet.js": {
-          "bytesInOutput": 846
+          "bytesInOutput": 916
         },
         "src/body/posenet.js": {
           "bytesInOutput": 474
@@ -660,7 +660,7 @@
           "bytesInOutput": 127001
         },
         "src/hand/handpose.js": {
-          "bytesInOutput": 1105
+          "bytesInOutput": 1263
         },
         "src/gesture.js": {
           "bytesInOutput": 1220
@@ -678,13 +678,13 @@
           "bytesInOutput": 3020
         },
         "src/human.js": {
-          "bytesInOutput": 7397
+          "bytesInOutput": 7219
         },
         "src/human.js": {
           "bytesInOutput": 0
         }
       },
-      "bytes": 1277954
+      "bytes": 1278477
     }
   }
 }

src/age/age.js

@@ -9,7 +9,11 @@ let frame = Number.MAX_SAFE_INTEGER;
 const zoom = [0, 0]; // 0..1 meaning 0%..100%
 
 async function load(config) {
-  if (!models.age) models.age = await tf.loadGraphModel(config.face.age.modelPath);
+  if (!models.age) {
+    models.age = await tf.loadGraphModel(config.face.age.modelPath);
+    // eslint-disable-next-line no-console
+    console.log(`Human: load model: ${config.face.age.modelPath.match(/\/(.*)\./)[1]}`);
+  }
   return models.age;
 }
 

src/body/modelPoseNet.js

@@ -60,6 +60,8 @@ exports.PoseNet = PoseNet;
 async function loadMobileNet(config) {
   const graphModel = await tf.loadGraphModel(config.modelPath);
   const mobilenet = new modelMobileNet.MobileNet(graphModel, config.outputStride);
+  // eslint-disable-next-line no-console
+  console.log(`Human: load model: ${config.modelPath.match(/\/(.*)\./)[1]}`);
   return new PoseNet(mobilenet);
 }
 /**

src/emotion/emotion.js

@@ -12,7 +12,11 @@ const rgb = [0.2989, 0.5870, 0.1140]; // factors for red/green/blue colors when
 const scale = 1; // score multiplication factor
 
 async function load(config) {
-  if (!models.emotion) models.emotion = await tf.loadGraphModel(config.face.emotion.modelPath);
+  if (!models.emotion) {
+    models.emotion = await tf.loadGraphModel(config.face.emotion.modelPath);
+    // eslint-disable-next-line no-console
+    console.log(`Human: load model: ${config.face.emotion.modelPath.match(/\/(.*)\./)[1]}`);
+  }
   return models.emotion;
 }
 

src/face/blazeface.js

@@ -172,6 +172,8 @@ class BlazeFaceModel {
 async function load(config) {
   const blazeface = await tf.loadGraphModel(config.detector.modelPath, { fromTFHub: config.detector.modelPath.includes('tfhub.dev') });
   const model = new BlazeFaceModel(blazeface, config);
+  // eslint-disable-next-line no-console
+  console.log(`Human: load model: ${config.detector.modelPath.match(/\/(.*)\./)[1]}`);
   return model;
 }
 

src/face/facemesh.js

@@ -48,6 +48,10 @@ async function load(config) {
     tf.loadGraphModel(config.iris.modelPath, { fromTFHub: config.iris.modelPath.includes('tfhub.dev') }),
   ]);
   const faceMesh = new MediaPipeFaceMesh(models[0], models[1], models[2], config);
+  // eslint-disable-next-line no-console
+  console.log(`Human: load model: ${config.mesh.modelPath.match(/\/(.*)\./)[1]}`);
+  // eslint-disable-next-line no-console
+  console.log(`Human: load model: ${config.iris.modelPath.match(/\/(.*)\./)[1]}`);
   return faceMesh;
 }
 

src/gender/gender.js

@@ -11,8 +11,12 @@ const zoom = [0, 0]; // 0..1 meaning 0%..100%
 const rgb = [0.2989, 0.5870, 0.1140]; // factors for red/green/blue colors when converting to grayscale
 
 async function load(config) {
-  if (!models.gender) models.gender = await tf.loadGraphModel(config.face.gender.modelPath);
+  if (!models.gender) {
-  alternative = models.gender.inputs[0].shape[3] === 1;
+    models.gender = await tf.loadGraphModel(config.face.gender.modelPath);
+    alternative = models.gender.inputs[0].shape[3] === 1;
+    // eslint-disable-next-line no-console
+    console.log(`Human: load model: ${config.face.gender.modelPath.match(/\/(.*)\./)[1]}`);
+  }
   return models.gender;
 }
 

src/hand/handpose.js

@@ -75,6 +75,10 @@ async function load(config) {
   const detector = new handdetector.HandDetector(handDetectorModel, config.inputSize, anchors.anchors);
   const pipe = new pipeline.HandPipeline(detector, handPoseModel, config.inputSize);
   const handpose = new HandPose(pipe);
+  // eslint-disable-next-line no-console
+  console.log(`Human: load model: ${config.detector.modelPath.match(/\/(.*)\./)[1]}`);
+  // eslint-disable-next-line no-console
+  console.log(`Human: load model: ${config.skeleton.modelPath.match(/\/(.*)\./)[1]}`);
   return handpose;
 }
 exports.load = load;

src/human.js

@@ -138,30 +138,12 @@ class Human {
         this.models.handpose || handpose.load(this.config.hand),
       ]);
     } else {
-      if (this.config.face.enabled && !this.models.facemesh) {
+      if (this.config.face.enabled && !this.models.facemesh) this.models.facemesh = await facemesh.load(this.config.face);
-        this.log('load model: face');
+      if (this.config.body.enabled && !this.models.posenet) this.models.posenet = await posenet.load(this.config.body);
-        this.models.facemesh = await facemesh.load(this.config.face);
+      if (this.config.hand.enabled && !this.models.handpose) this.models.handpose = await handpose.load(this.config.hand);
-      }
+      if (this.config.face.enabled && this.config.face.age.enabled && !this.models.age) this.models.age = await age.load(this.config);
-      if (this.config.body.enabled && !this.models.posenet) {
+      if (this.config.face.enabled && this.config.face.gender.enabled && !this.models.gender) this.models.gender = await gender.load(this.config);
-        this.log('load model: body');
+      if (this.config.face.enabled && this.config.face.emotion.enabled && !this.models.emotion) this.models.emotion = await emotion.load(this.config);
-        this.models.posenet = await posenet.load(this.config.body);
-      }
-      if (this.config.hand.enabled && !this.models.handpose) {
-        this.log('load model: hand');
-        this.models.handpose = await handpose.load(this.config.hand);
-      }
-      if (this.config.face.enabled && this.config.face.age.enabled && !this.models.age) {
-        this.log('load model: age');
-        this.models.age = await age.load(this.config);
-      }
-      if (this.config.face.enabled && this.config.face.gender.enabled && !this.models.gender) {
-        this.log('load model: gender');
-        this.models.gender = await gender.load(this.config);
-      }
-      if (this.config.face.enabled && this.config.face.emotion.enabled && !this.models.emotion) {
-        this.log('load model: emotion');
-        this.models.emotion = await emotion.load(this.config);
-      }
     }
     const current = Math.trunc(now() - timeStamp);
     if (current > (this.perf.load || 0)) this.perf.load = current;