↓ Ir para o conteúdo principal
Scholion
Scholion

← todas as notas

📎 Webclip

Tutorial: Build your own Google TV Using RaspberryPi, NodeJS and Socket.io

The article outlines a proof-of-concept Google TV built with open source tools on a Raspberry Pi. It uses Raspbian, Node.js, Socket.io, Chromium, YouTube-dl, OMXPlayer, QuoJS, HTML5, CSS3, JavaScript, Moustache, and the YouTube API, and it separates the project into setup, shell commands, back-end, and front-end work.

Reading notes
#

  • The project is described as a proof of concept, not as an actual Google TV replica.
  • The hardware base is Raspberry Pi.
  • The software stack includes Raspbian, Node.js, Socket.io, Express, Omxcontrol, Chromium, OMXPlayer, YouTube-dl, QuoJS, HTML5, CSS3, JavaScript, Moustache, and the YouTube API.
  • The setup section covers installing Raspbian and Node.js, Chromium, fonts, and YouTube-dl.
  • The tutorial notes that streaming YouTube in Chromium on the Raspberry Pi is very slow because the videos are not rendered on the GPU.
  • YouTube-dl is used as an alternative because it downloads the video first and OMXPlayer renders it on the GPU.
  • The shell section shows commands for setting DISPLAY, testing Chromium in kiosk mode, testing YouTube-dl, and playing downloaded videos with OMXPlayer.
  • The back-end is a simple Express server with routes for index.html and remote.html.
  • npm install is used after defining dependencies in package.json.
  • The article mentions running the Node app in the background with node app.js &.
  • Socket.io is added to provide realtime connectivity across browsers by choosing the most capable transport at runtime.
  • The server keeps one socket for the screen and another for the remote.
  • The remote and screen clients both connect through socket.io, and the remote sends control events.
  • The server can receive control actions such as tap, swipeLeft, and swipeRight and forward them to the screen socket.
  • The video flow listens for a play action, downloads the YouTube video with youtube-dl, then starts it with omx.start().
  • The front-end section points to Google’s design guidance for TV interfaces.
  • QuoJS is used for swipe gestures on the mobile remote.
  • The article also shows mobile web app meta tags and icons for an iPhone-style native feel.
  • The project is marked as a work in progress and links to the source code on GitHub.