npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

gifencoder-canvas-aws-prebuilt

v1.1.1

Published

Streaming server-side animated (and non-animated) gif generation for node.js

Downloads

5

Readme

gifencoder

Streaming server-side animated (and non-animated) gif generation for node.js

build status

Installation

This module is installed via npm:

$ npm install gifencoder

Streaming API - Duplex Piping with Writes

You can also stream writes of pixel data (or canvas contexts) to the encoder:

var GIFEncoder = require('gifencoder');
var encoder = new GIFEncoder(854, 480);
var pngFileStream = require('png-file-stream');
var fs = require('fs');

pngFileStream('test/**/frame?.png')
  .pipe(encoder.createWriteStream({ repeat: -1, delay: 500, quality: 10 }))
  .pipe(fs.createWriteStream('myanimated.gif'));

NB: The chunks that get emitted by your read stream must either by a 1-dimensional bitmap of RGBA data (either an array or Buffer), or a canvas 2D context.

Example: Streaming API - Reads

You can also use a streaming API to receive data:

var GIFEncoder = require('gifencoder');
var Canvas = require('canvas-aws-prebuilt');
var fs = require('fs');

var encoder = new GIFEncoder(320, 240);
// stream the results as they are available into myanimated.gif
encoder.createReadStream().pipe(fs.createWriteStream('myanimated.gif'));

encoder.start();
encoder.setRepeat(0);   // 0 for repeat, -1 for no-repeat
encoder.setDelay(500);  // frame delay in ms
encoder.setQuality(10); // image quality. 10 is default.

// use node-canvas
var canvas = new Canvas(320, 240);
var ctx = canvas.getContext('2d');

// red rectangle
ctx.fillStyle = '#ff0000';
ctx.fillRect(0, 0, 320, 240);
encoder.addFrame(ctx);

// green rectangle
ctx.fillStyle = '#00ff00';
ctx.fillRect(0, 0, 320, 240);
encoder.addFrame(ctx);

// blue rectangle
ctx.fillStyle = '#0000ff';
ctx.fillRect(0, 0, 320, 240);
encoder.addFrame(ctx);

encoder.finish();

The above code will generate the following animated GIF:

Animated GIF

Contributing

gifencoder is an OPEN Open Source Project. This means that:

Individuals making significant and valuable contributions are given commit-access to the project to contribute as they see fit. This project is more like an open wiki than a standard guarded open source project.

See the CONTRIBUTING.md file for more details.

Contributors

gifencoder is only possible due to the excellent work of the following contributors: