https://github.com/deckarep/zigualizer

Zigualizer: A music visualizer built with Zig, powered by the FFT algorithm.
https://github.com/deckarep/zigualizer

fft music raylib spectrum-analyzer visualizer zig zig-package ziglang

Last synced: 24 days ago
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Zigualizer: A music visualizer built with Zig, powered by the FFT algorithm.

• Host: GitHub
• URL: https://github.com/deckarep/zigualizer
• Owner: deckarep
• License: mit
• Created: 2024-11-17T05:34:00.000Z (3 months ago)
• Default Branch: main
• Last Pushed: 2024-11-17T19:20:21.000Z (3 months ago)
• Last Synced: 2024-11-17T20:17:49.055Z (3 months ago)
• Topics: fft, music, raylib, spectrum-analyzer, visualizer, zig, zig-package, ziglang
• Language: C
• Homepage:
• Size: 6.61 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# zigualizer

Zigualizer: A music visualizer built with Zig, powered by the FFT algorithm.

[Click here](https://youtu.be/6h9Bty-wdMA) for a demo on YouTube!

![](screenshot.png)

## Details

This implementation was originally based on the [Musializer project by @Tsoding](https://github.com/tsoding/musializer/blob/master/src/plug.c).

This version as it stands has been tested to work with Raylib 5.0.

I have modified this version to be backed by a generic circular buffer over a 

fixed size array. Additionally, I am leveraging comptime in a few spots to

generate some static windowing functions.

## Raylib integration

For a more thorough example see raylib.zig in the examples/ folder.

Integration is a 4-step process (aside from music stream code).

```zig

// 1. Import

const fft = @import("zigualizer");

// 2. Init

fft.FFT_Analyzer.reset();

// After loading up a Raylib Music stream.

track = c.LoadMusicStream(pathToTrack);

defer c.UnloadMusicStream(track);

// 3. Attach

c.AttachAudioStreamProcessor(track.stream, fft.FFT_Analyzer.fft_process_callback);

c.PlayMusicStream(track);

// In your update loop

fn update() void {

    c.UpdateMusicStream(track);

    // 4. Analyze

    frames = fft.FFT_Analyzer.analyze(c.GetFrameTime());

}

// In your draw loop render the FFT however you like!

fn draw() void {

    c.BeginDrawing();

    defer c.EndDrawing();

    c.ClearBackground(c.BLACK);

    

    // 5. Draw

    renderFFT(400, 200);

}

```

## Building the examples

```sh

# Run the Raylib demo.

zig build -Dexample-name=raylib.zig && zig-out/example/raylib

```