public struct AudioPipelineStats: Equatable {
    public private(set) var microphoneFrames: Int
    public private(set) var microphoneBytes: Int
    public private(set) var systemFrames: Int
    public private(set) var systemBytes: Int

    public init(microphoneFrames: Int = 0, microphoneBytes: Int = 0, systemFrames: Int = 0, systemBytes: Int = 0) {
        self.microphoneFrames = microphoneFrames
        self.microphoneBytes = microphoneBytes
        self.systemFrames = systemFrames
        self.systemBytes = systemBytes
    }

    public mutating func recordFrame(source: AudioSource, byteCount: Int) {
        switch source {
        case .microphone:
            microphoneFrames += 1
            microphoneBytes += byteCount
        case .system:
            systemFrames += 1
            systemBytes += byteCount
        }
    }
}