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Quick Tessel Webcam Server
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<!doctype html> | |
<html> | |
<head> | |
<meta name="viewport" content="width=device-width, initial-scale=1"> | |
<title>Tessel-Cam</title> | |
<style> | |
body { | |
font-family: Helvetica, sans-serif; | |
text-align: center; | |
} | |
.link-reset { | |
color: inherit; | |
text-decoration: none; | |
} | |
.button { | |
border: 3px solid magenta; | |
border-radius: 3px; | |
color: magenta; | |
padding: 0.5rem 1rem; | |
} | |
.button:hover { | |
cursor: pointer; | |
} | |
.absolute { | |
position: absolute; | |
} | |
.relative { | |
position: relative; | |
} | |
.overlay-image { | |
bottom: 1rem; | |
right: 1rem; | |
} | |
.debug { | |
border: 1px solid red; | |
} | |
.max-content { | |
width: -moz-max-content; | |
width: -webkit-max-content; | |
width: max-content; | |
} | |
.mx-auto { | |
margin: 0 auto; | |
} | |
</style> | |
</head> | |
<body> | |
<h1>Welcome to Tessel Cam!</h1> | |
<div class="relative max-content mx-auto"> | |
<img src="{{cameraURL}}" alt="Web Cam Stream" width="800" height="600" > | |
<a href="/capture" class="button link-reset absolute overlay-image" download>Snap a Photo!</a> | |
</div> | |
<h3>The current node version is {{nodeVersion}}</h3> | |
</body> | |
</html> |
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'use strict'; | |
const av = require('tessel-av'); | |
const os = require('os'); | |
const http = require('http'); | |
const fs = require('fs'); | |
const path = require('path'); | |
const templateStream = require('./stream-template'); | |
const port = 9001; | |
const camera = new av.Camera({ | |
fps: 30, | |
height: 600, | |
width: 800, | |
}); | |
const server = http.createServer((request, response) => { | |
if (/capture/.test(request.url)) { | |
console.log('capturing photo...'); | |
response.writeHead(200, { "Content-Type": "image/jpeg" }); | |
camera.capture().pipe(response); | |
return; | |
} | |
console.log('getting the main page'); | |
const indexPageStream = fs.createReadStream(path.join(__dirname, 'index.html')); | |
response.writeHead(200, { "Content-Type": "text/html" }); | |
indexPageStream | |
.pipe(templateStream({ | |
cameraURL: camera.url, | |
nodeVersion: process.versions.node, | |
})) | |
.pipe(response); | |
}).listen(port, () => { | |
console.log(`Now serving at http://${os.hostname()}:${port}`); | |
console.log(camera.url); | |
}); |
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{ | |
"name": "tessel-cam", | |
"version": "1.0.0", | |
"description": "", | |
"main": "index.js", | |
"scripts": { | |
"start": "t2 run index.js" | |
}, | |
"author": "", | |
"license": "ISC", | |
"dependencies": { | |
"tessel-av": "^0.19.0" | |
} | |
} |
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'use strict'; | |
const Transform = require('stream').Transform; | |
module.exports = (data = {}) => ( | |
new Transform({ | |
writableObjectMode: true, | |
transform(chunk, encoding, callback) { | |
let html = chunk.toString(); | |
for (const prop in data) { | |
const finder = new RegExp(`{{\\s*(${prop})\\s*}}`, 'g'); | |
html = html.replace(finder, data[prop]); | |
} | |
callback(null, html); | |
}, | |
}) | |
); |
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