nbs-rs

This crate provides functionality for decoding & encoding (Open)NoteBlockStudio buffers. It supports the original NBS format, aswell as version 1-4 of the unofficial new format introduced in OpenNoteBlockStudio. Documentation on the NBS format can be found at NoteBlockStudio and OpenNoteBlockStudio.

Example: Editing a NBS file

use nbs::{
    noteblocks::{instrument, note::Note},
    Nbs,
};
use std::fs::File;

fn main() {
    let mut file = File::open("tests/1.nbs").unwrap();
    let mut nbs = Nbs::decode(&mut file).unwrap();
    nbs.noteblocks.layers[2].name = String::from("Cows"); // Renaming the 3rd layer "Cows".
    nbs.noteblocks.layers[2].volume = 25; // Setting its volume to 25%.
    // Insert a Note in the 3rd layer at tick 0
    nbs.noteblocks.layers[2].notes.insert(
        0,
        Note::new(instrument::COW_BELL, 33, Some(100), Some(100), Some(0)),
    );
    // Write the changes to `out1.nbs`.
    nbs.encode(&mut File::create("out1.nbs").unwrap()).unwrap();
}

Example: Creating a NBS file

use nbs::{
    header::Header,
    noteblocks::{instrument, instrument::CustomInstruments, layer::Layer, note::Note, NoteBlocks},
    Nbs, NbsFormat,
};
use std::fs::File;

fn main() {
    let mut file = File::create("out2.nbs").unwrap();
    let mut header = Header::new(NbsFormat::OpenNoteBlockStudio(4)); // Create a header.
    header.song_name = String::from("test"); // Change the name to `test`.
    let mut noteblocks = NoteBlocks::new();
    // Create a new Layer.
    noteblocks
        .layers
        .push(Layer::from_format(NbsFormat::OpenNoteBlockStudio(4)));
    // Insert 20 notes into the first layer
    for i in 0..20 {
        noteblocks.layers[0].notes.insert(
            i,
            Note::new(
                instrument::PIANO,
                (33 + i) as i8,
                Some(100),
                Some(100),
                Some(0),
            ),
        );
    }
    let custom_instruments = CustomInstruments::new(); // Create a empty list of custom instruments.
    let mut nbs = Nbs::from_componets(header, noteblocks, custom_instruments); // Assamble everything together.
    nbs.update(); // Update certian fields in the header to match the rest of the file.
    nbs.encode(&mut file); // save!
}