https://github.com/contentful-labs/Concorde

Download and decode progressive JPEGs on iOS.
https://github.com/contentful-labs/Concorde

Last synced: 16 days ago
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Download and decode progressive JPEGs on iOS.

• Host: GitHub
• URL: https://github.com/contentful-labs/Concorde
• Owner: contentful-labs
• License: mit
• Created: 2015-03-10T15:00:56.000Z (almost 10 years ago)
• Default Branch: master
• Last Pushed: 2022-02-08T14:29:54.000Z (almost 3 years ago)
• Last Synced: 2024-05-29T04:48:21.588Z (7 months ago)
• Language: Objective-C
• Size: 16 MB
• Stars: 1,441
• Watchers: 53
• Forks: 157
• Open Issues: 9
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-ios - Concorde - Download and decode progressive JPEGs. (Media / Image)

README

        
# Concorde

[![Version](https://img.shields.io/cocoapods/v/Concorde.svg?style=flat)](http://cocoadocs.org/docsets/Concorde)

[![License](https://img.shields.io/cocoapods/l/Concorde.svg?style=flat)](http://cocoadocs.org/docsets/Concorde)

[![Platform](https://img.shields.io/cocoapods/p/Concorde.svg?style=flat)](http://cocoadocs.org/docsets/Concorde)

[![Build Status](http://img.shields.io/travis/contentful-labs/Concorde.svg?style=flat)](https://travis-ci.org/contentful-labs/Concorde)

[![Coverage Status](https://coveralls.io/repos/contentful-labs/Concorde/badge.svg?branch=master)](https://coveralls.io/r/contentful-labs/Concorde?branch=master)

![](use.gif)

This is a framework for downloading and decoding progressive JPEGs easily on iOS and OS X. It uses [libjpeg-turbo][1] as underlying JPEG implementation. We vendor version 1.4.0 of the static library from libjpeg-turbo's [official release][3] for convenience.

## Usage

Simply install it via [CocoaPods][4]:

```

pod 'Concorde'

```

and then use `CCBufferedImageView` which progressively downloads and shows an image:

```swift

let imageView = CCBufferedImageView(frame: ...)

if let url = NSURL(string: "http://example.com/yolo.jpg") {

	imageView.load(url)

}

```

If you use [Contentful][2], install the subspec:

```

pod 'Concorde/Contentful'

```

and replace your usage of `UIImageView` with `CCBufferedImageView` to automatically use progressive JPEGs

if you have been using the `UIImageView` category before. This will work regardless of the original format

of your files due to the image transformation functionality of the delivery API.

### Manual integration

You can also integrate Concorde as a subproject or download a binary build from the releases section. Please note that those are only provided for iOS at the moment.

## License

Copyright (c) 2015 Contentful GmbH. See LICENSE for further details.

`CCBufferedImageDecoder` is derived from [WebKit][5], see comments in its file for further copyright details.

The examples use , which artificially slows the connection down to 0.5 Kilobyte/second to demonstrate the differences between regular and progressive JPEGs.

[1]: http://www.libjpeg-turbo.org

[2]: https://www.contentful.com

[3]: http://sourceforge.net/projects/libjpeg-turbo/files/1.4.0/libjpeg-turbo-1.4.0.dmg/download

[4]: http://cocoapods.org

[5]: https://www.webkit.org