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https://github.com/Luccifer/BPM-Analyser

Analyser BPM in Swift for your music/sounds/records, whatever..
https://github.com/Luccifer/BPM-Analyser

analyser analyzer bpm ios media music songs swift swift4

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Analyser BPM in Swift for your music/sounds/records, whatever..

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README 

        
# BPM-Analyser



![](https://img.shields.io/badge/swift-4.0-green.svg)

![](https://img.shields.io/badge/platform-ios-gray.svg)



Analyser BPM in Swift for your music/sounds/records, whatever..

Powered with [Superpowered](http://superpowered.com)



# Preview:

![](https://github.com/Luccifer/BPM-Analyser/blob/master/preview.gif)



# How To:



## Copy theese files to your project:

- BMPAnalyzer.swift

- Superpower directory



## Also add theese frameworks to your Linked Frameworks and Libraries

- Add AudioToolbox.framework

- CoreMedia.framework

- AVFoundation

- libSuperpoweredAudioIOS.a (From repo: /src/Superpowered, you added it to project in the previous step



## In your code implementation you can call Singleton method by:

```swift

 public func getBpmFrom(_ url: URL, completion: (String?) -> ()) -> String

```

Example:

```swift

guard let filePath = Bundle.main.path(forResource: "TestMusic", ofType: "m4a"),

let url = URL(string: filePath) else {return "error occured, check fileURL"}

BPMAnalyzer.core.getBpmFrom(url, completion: nil)



```



You can stuck it with MPMediaPicker in delegate like this:

```swift

import UIKit

import MediaPlayer



class YourClassViewController: UIViewController {



 let mediaPicker: MPMediaPickerController = MPMediaPickerController(mediaTypes: .music)

    lazy var bpmLabel: UILabel = {

        let label = UILabel()

        label.frame.size.height = 300

        label.frame.size.width = UIScreen.main.bounds.width - 32

        label.numberOfLines = 2

        return label

    }()

    

    override func viewDidLoad() {

        super.viewDidLoad()

        mediaPicker.allowsPickingMultipleItems = false

        mediaPicker.delegate = self

        present(mediaPicker, animated: true, completion: nil)

        // Do any additional setup after loading the view, typically from a nib.

    }

}



extension YourClassViewController: MPMediaPickerControllerDelegate {



    func mediaPicker(_ mediaPicker: MPMediaPickerController, didPickMediaItems

        mediaItemCollection: MPMediaItemCollection) {

        guard let asset = mediaItemCollection.items.first,

            let url = asset.assetURL else {return}

        _ = BPMAnalyzer.core.getBpmFrom(url, completion: {[weak self] (bpm) in

            self?.addLabelWith(bpm)

            self?.mediaPicker.dismiss(animated: true, completion: nil)

        })

    }

    

    func addLabelWith(_ bpm: String) {

        bpmLabel.text = String(describing:bpm)

        view.addSubview(bpmLabel)

        bpmLabel.center = view.center

        view.layoutIfNeeded()

    }

}



```

### Look Example project in case of misunderstanding! :)



## WHY?

Cause I can :D But in fact, I did't find any libs/frameworks to get BPM from media files...



# WHY Superpowered?

Cause it is the [fastest lib I have found](http://superpowered.com)



# Feel FREE to PR or contribuctions/issues/remarks



## BUGS/Fixes Contributors:

@o1exij - for the advice and reseraching the bug in BPM counting



@MikaTck - for alerting fatal error + Swift4 migration