Struct Extension

StructExtension.swift

import AVFoundation

public typealias AOIBaseType = AOIBaseProtocol

public protocol AOIBaseProtocol {
    associatedtype T
    var aoi: T { get }
    static var aoi: T.Type { get }
}

extension TimeProxy {

    public static var zero: CMTime {
        return kCMTimeZero
    }

    public var seconds: Double {
        return CMTimeGetSeconds(base)
    }
}

public struct TimeProxy {

    fileprivate let base: CMTime

    init(_ base: CMTime) {
        self.base = base
    }
}

extension CMTime: AOIBaseType {

    public typealias T = TimeProxy

    public var aoi: T {
        return T(self)
    }

    public static var aoi: T.Type {
        return T.self
    }
}