zigualizer

Zigualizer: A music visualizer built with Zig, powered by the FFT algorithm. Click here for a demo on YouTube!

Details

This implementation was originally based on the Musializer project by @Tsoding. 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).

// 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

# Run the Raylib demo.
zig build -Dexample-name=raylib.zig && zig-out/example/raylib