Twist Player

Twist provides a full fledged music player functionality. This is still in alpha stage and is being actively developed.

Requirements

• iOS 9.0+
• Xcode 8.0+
• Swift 3.0+

Features

• Play local and remote media
• Update media information on lockscreen using MPNowPlayingInfoCenter
• Handle the remote events
• 3 Repeat modes: RepeatAll, RepeatOne, RepeatOff
• Shuffling
• Cache remote files to local filesystem
• Configurable logging

Installation

There will be support for Carthage and Cocoapods but this has not been done right now.

Usage

The music player is controlled via TwistDelegate and TwistDataSource protocol implementations

TwistDelegate

public protocol TwistDelegate {
    func twist(_ twist: Twist, loaded: TimeInterval, outOf totalDuration: TimeInterval)
    func twist(_ twist: Twist, playedTo currentTime: Double, outOf totalDuration: Double)
    func twist(_ twist: Twist, startedPlayingItemAtIndex itemIndex: Int)
    func twist(_ twist: Twist, failedToPlayURL itemURL: URL, forItemAtIndex itemIndex: Int)
    func twist(_ twist: Twist, downloadedMedia fileItemURL: URL, forItemAtIndex itemIndex: Int)
    func twist(_ twist: Twist, willChangeStateFrom fromState: TwistState, to newState: TwistState)
    func twist(_ twist: Twist, didChangeStateFrom fromState: TwistState, to newState: TwistState)
}

All methods are optional and have been provided with default implementation.

TwistDataSource

public protocol TwistDataSource {
    func twistTotalItemsInQueue(_ twist: Twist) -> Int
    func twist(_ twist: Twist, urlForItemAtIndex itemIndex: Int, completionHandler completion: @escaping (URL?, NSError?) -> Void)

    // Optional
    func twist(_ twist: Twist, shouldCacheItemAtIndex itemIndex: Int) -> Bool
    func twist(_ twist: Twist, cacheFilePathForItemAtIndex itemIndex: Int) -> String
    func twist(_ twist: Twist, mediaInfoForItemAtIndex itemIndex: Int) -> TwistMediaInfo
    func twistPreferredNextItemIndex(_ twist: Twist) -> Int?
}

Data source only has two required methods and everything else is optional

TwistMediaInfo

This struct is used to provide the media information to be displayed on the lockscreen

public struct TwistMediaInfo {
    let title: String
    let artist: String
    let album: String
    var albumArt: UIImage?

    public init(title: String, artist: String, album: String, albumArt: UIImage? = nil) {
        ...
    }
}

TODO

• Add tests
• Add installation instructions for Carthage and Cocoapods

Author

Created by Jais Cheema

• GitHub
• Twitter

Contributions

Fork the repository and make a pull request and I will review and merge it. Try to

• Pick a thing out of the TODO list (or something that is an obvious improvement)
• Keep the changes simple
• Add comments for the hairy bits
• Add tests

License

Twist is released under the MIT license. See LICENSE for details.