AudioVisualizerKit

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AudioVisualizerKit

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Provides the computational assistance for drawing the audio visualizer.

// repository documentation

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# AudioVisualizerKit

Provides the computational assistance for drawing the audio visualizer.

## Requirements

- Development with Xcode 15.4+
- Written in Swift 5.10
- Compatible with iOS 17.0+, macOS 14.0+

## Privacy Manifest

This library does not collect or track user information, so it does not include a PrivacyInfo.xcprivacy file.

## Installation

AudioVisualizerKit is available through [Swift Package Manager](https://github.com/apple/swift-package-manager/).

**Xcode**

1. File > Add Package Dependencies…
2. Search `https://github.com/Kyome22/AudioVisualizerKit.git`.
3. Add package and link `AudioVisualizerKit` to your application target.

**CLI**

1. Create `Package.swift` that describes dependencies.

```swift
   // swift-tools-version: 5.10
   import PackageDescription

let package = Package(
       name: "SomeProduct",
       products: [
           .library(name: "SomeProduct", targets: ["SomeProduct"])
       ],
       dependencies: [
           .package(url: "https://github.com/Kyome22/AudioVisualizerKit.git", exact: "1.0.0")
       ],
       targets: [
           .target(
               name: "SomeProduct",
               dependencies: [
                   .product(name: "AudioVisualizerKit", package: "AudioVisualizerKit")
               ]
           )
       ]
   )
   ```

2. Run the following command in Terminal.

## Usage

1. Get the URL of the music file.
2. Use `AudioAnalyzer` to play music and get magnitudes and RMS.
   - You can specify the FFT size.
   - You can specify a window function (hann or hamming or blackman).
3. Use `AmplitudeSpectrumView` to draw the audio visualizer.
   - You can select the shape type (straight or ring). 
   - You can specify the drawing range.
   - Pass RMS to enable color linked to sound intensity.

```swift
import AudioVisualizerKit
import SwiftUI

struct ContentView: View {
    let audioAnalyzer = AudioAnalyzer(fftSize: 2048, windowType: .hannWindow)

var body: some View {
        AmplitudeSpectrumView(
            shapeType: .straight,
            magnitudes: audioAnalyzer.magnitudes,
            range: 0 ..< 128,
            rms: audioAnalyzer.rms
        )
        .padding()
        .onAppear {
            let url = Bundle.main.url(forResource: "example", withExtension: "mp3")!
            try? audioAnalyzer.prepare(url: url)
            try? audioAnalyzer.play()
        }
        .onDisappear {
            audioAnalyzer.stop()
        }
    }
}
```

AudioVisualizerKit

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