import Foundation
import AudioToolbox

public struct SoundTransform {

    static public let defaultValue: Float32 = 1.0
    static public let defaultPlayRate: Float32 = 1.0
    static public let defaultPitch: Float32 = 1200
    static public let defaultVolumeRampTime: Float32 = 0
    static public let defaultPan: Float32 = 0

    public var volume: Float32 = SoundTransform.defaultValue
    public var playRate: Float32 = SoundTransform.defaultPlayRate
    public var pitch: Float32 = SoundTransform.defaultPitch
    public var volumeRampTime: Float32 = SoundTransform.defaultVolumeRampTime
    public var pan: Float32 = SoundTransform.defaultPan

    func setParameter(_ inAQ: AudioQueueRef) {
        AudioQueueSetParameter(inAQ, kAudioQueueParam_Volume, volume)
        AudioQueueSetParameter(inAQ, kAudioQueueParam_PlayRate, playRate)
        AudioQueueSetParameter(inAQ, kAudioQueueParam_Pitch, pitch)
        AudioQueueSetParameter(inAQ, kAudioQueueParam_VolumeRampTime, volumeRampTime)
        AudioQueueSetParameter(inAQ, kAudioQueueParam_Pan, pan)
    }
}

extension SoundTransform: CustomStringConvertible {
    // MARK: CustomStringConvertible
    public var description: String {
        return Mirror(reflecting: self).description
    }
}