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‎.gitignore

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node_modules
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package-lock.json

‎led-control/.gitignore

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# Logs
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logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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# Runtime data
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pids
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*.pid
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*.seed
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*.pid.lock
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# Directory for instrumented libs generated by jscoverage/JSCover
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lib-cov
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# Coverage directory used by tools like istanbul
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coverage
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# nyc test coverage
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.nyc_output
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# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
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.grunt
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# Bower dependency directory (https://bower.io/)
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bower_components
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# node-waf configuration
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.lock-wscript
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# Compiled binary addons (http://nodejs.org/api/addons.html)
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build/Release
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# Dependency directories
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node_modules/
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jspm_packages/
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# Typescript v1 declaration files
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typings/
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# Optional npm cache directory
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.npm
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# Optional eslint cache
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.eslintcache
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# Optional REPL history
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.node_repl_history
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# Output of 'npm pack'
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*.tgz
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# Yarn Integrity file
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.yarn-integrity
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# dotenv environment variables file
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.env
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‎led-control/README.md

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# led-control
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App controlling led strips on RPi
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- Production: `leds.local`
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- Development: `localhost:3000`
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## Install
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```
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git clone [email protected]:keymetrics/led-control.git && cd led-control && yarn
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```
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## Deploy
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```
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pm2 deploy production
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```
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## Example
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```
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curl -XPOST http://leds.local/color/0000FF
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```
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## Color
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```http
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POST /color/:color
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```
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## Tick
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```http
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POST /tick/:color
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```
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## Led
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```http
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POST /led/:number/:color
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```
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## Mods
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### Follow
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```http
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POST /follow
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```
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### Sequence
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```http
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POST /sequence
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```

‎led-control/classes/Mode.js

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/**
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* Parent class which will be inherited by the different modes
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*/
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module.exports = class Mode {
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constructor() {
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this.timeouts = []
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this.intervals = []
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}
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clearAll() {
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// clear every timeout + interval here
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console.log('Clearing all timeouts + intervals')
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}
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}

‎led-control/classes/YoutubeMode.js

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const Mode = require('./Mode')
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const fs = require('fs')
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const youtubedl = require('youtube-dl')
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const ffmpeg = require('fluent-ffmpeg')
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const { exec } = require('child_process')
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const config = require('../config/config.js')
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const leds = require('rpi-ws281x-native')
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const chalk = require('chalk')
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function rgbToInt(r, g, b) {
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return r << 16 | g << 8 | b
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}
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module.exports = class YoutubeMode extends Mode {
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constructor({ url }) {
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super()
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console.log('Initializing YoutubeMode')
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console.log('Loading url', url)
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let video = youtubedl(url, ['--format=18'], { cwd: __dirname })
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video.on('info', function (info) {
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console.log('Download started')
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console.log('filename: ' + info.filename)
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console.log('size: ' + info.size)
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})
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video.pipe(fs.createWriteStream('myvideo.mp4'))
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video.on('end', function () {
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console.log('finished downloading!')
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let ff = ffmpeg(__dirname + '/../myvideo.mp4').noAudio().outputFormat('rawvideo')
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console.log('file loaded')
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console.log('Led Count = ' + config.ledCount)
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const ffmpegCommand = 'yes | ffmpeg -i myvideo.mp4 -filter:v "scale=1650:-1, crop=w=in_w:h=1:x=0:y=in_h/2:exact=1" -vcodec rawvideo -pix_fmt rgb24 out.rgb'
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exec(ffmpegCommand, (error, stdout, stderr) => {
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if (error) {
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console.error(`exec error: ${error}`);
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return;
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}
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console.log(`stdout: ${stdout}`);
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console.log(`stderr: ${stderr}`);
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console.log('ffmpeg command finished')
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// let file = fs.readFileSync(__dirname + '/../out.rgb')
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// let fileArray = new Uint32Array(file)
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// console.log(fileArray.length + ' <------- length')
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let frameNb = 0
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setInterval(() => {
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let readStream = fs.createReadStream(__dirname + '/../out.rgb', {start: frameNb * 1650, end: (3 + frameNb) * 1650 - 1})
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let data = ''
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let testChunk
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readStream.on('data', function(chunk) {
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console.log('chunk loaded')
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testChunk = new Uint32Array(chunk)
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console.log(testChunk.length)
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// console.log(testChunk)
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// data += chunk
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}).on('end', function() {
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console.log('stream read ended')
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let frame = 0;
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let newArray = new Uint32Array(1650).map((val, index, array) => {
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let r = testChunk[index * 3]
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let g = testChunk[index * 3 + 1]
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let b = testChunk[index * 3 + 2]
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// console.log(chalk.rgb(r, g, b)(index))
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// if( r === 189 && g === 189 && b === 189) console.log(index)
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if (index === 1649) console.log(chalk.rgb(r, g, b)(index))
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if (index === 1650) console.log(`${r} ${g} ${b}`)
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if (index === 1651) console.log(`${r} ${g} ${b}`)
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// if (index === 1651) console.log(chalk.rgb(r, g, b)(index))
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// console.log(`${r} ${g} ${b}`)
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return rgbToInt(r, g, b)
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})
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console.log('Rendering Frame ' + frameNb)
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leds.render(newArray)
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frameNb = frameNb +1
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// let p = newArray[newArray.length - 2]
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// console.log(chalk.rgb(p.r, p.g, p.b)('youpi'))
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// console.log('maimmamidaimi')
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})
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}, 40)
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})
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// ffmpeg -i myVideo.mp4 -vcodec rawvideo -filter:v "crop=in_w/:1:0:0" -pix_fmt yuv420p out.rgb
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// ffmpeg -i myVideo.mp4 filter:v "crop=in_w/:1:0:0" out.mp4
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// ffmpeg -i myVideo.mp4 -filter:v "crop=in_w:1:0:0" out.mp4
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// ffmpeg -i myVideo.mp4 -filter:v "crop=w=in_w:h=1:x=0:y=0:exact=1" -vcodec rawvideo out.rgb
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// ffmpeg -i myVideo.mp4 -filter:v "crop=w=in_w:h=1:x=0:y=0:exact=1" -vcodec rawvideo -pix_fmt rgb24 out.rgb
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// ffmpeg -i myVideo.mp4 -filter:v "crop=w=in_w:h=1:x=0:y=0:exact=1" -vcodec rawvideo -pix_fmt rgb32 out.rgb
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// ffmpeg -i myvideo.mp4 -filter:v scale=1650:-1 -filter:v "crop=w=in_w:h=1:x=0:y=0:exact=1" -vcodec rawvideo -pix_fmt rgb32 out.rgb
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// fmpeg -i myvideo.mp4 -filter:v "scale=1650:-1" -filter:v "crop=w=in_w:h=2:x=0:y=0:exact=1" -vcodec rawvideo -pix_fmt rgb24 out.rgb
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// yes | fmpeg -i myvideo.mp4 -filter:v "scale=1650:-1" -filter:v "crop=w=in_w:h=1:x=0:y=0:exact=1" -vcodec rawvideo -pix_fmt rgb24 out.rgb
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// .complexFilter([
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// // Duplicate video stream 3 times into streams a, b, and c
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// { filter: 'split', options: '3', outputs: ['a', 'b', 'c'] },
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// // Create stream 'red' by cancelling green and blue channels from stream 'a'
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// { filter: 'lutrgb', options: { g: 0, b: 0 }, inputs: 'a', outputs: 'red' },
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// // Create stream 'green' by cancelling red and blue channels from stream 'b'
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// { filter: 'lutrgb', options: { r: 0, b: 0 }, inputs: 'b', outputs: 'green' },
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// // Create stream 'blue' by cancelling red and green channels from stream 'c'
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// { filter: 'lutrgb', options: { r: 0, g: 0 }, inputs: 'c', outputs: 'blue' },
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// // Pad stream 'red' to 3x width, keeping the video on the left, and name output 'padded'
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// { filter: 'pad', options: { w: 'iw3', h: 'ih' }, inputs: 'red', outputs: 'padded' },
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// // Overlay 'green' onto 'padded', moving it to the center, and name output 'redgreen'
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// { filter: 'overlay', options: { x: 'w', y: 0 }, inputs: ['padded', 'green'], outputs: 'redgreen' },
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// // Overlay 'blue' onto 'redgreen', moving it to the right
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// { filter: 'overlay', options: { x: '2w', y: 0 }, inputs: ['redgreen', 'blue'] },
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// ])
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})
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}
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}

‎led-control/config/config.js

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module.exports = {
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ledCount: 1650
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}

‎led-control/ecosystem.config.js

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module.exports = {
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apps: [{
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name: 'led-control',
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script: 'index.js',
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env: {
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NODE_ENV: 'development'
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},
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env_production: {
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NODE_ENV: 'production'
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}
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}],
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deploy: {
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production: {
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user: 'root',
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host: '192.168.1.11',
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ref: 'origin/master',
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repo: '[email protected]:keymetrics/led-control.git',
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path: '/home/pi/led-control/',
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'post-deploy': 'npm install && pm2 reload ecosystem.config.js --env production'
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}
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}
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}

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