NT-MDT palette format: JavaScript parsing library

It is a color scheme for visualising SPM scans.

Application

["Nova", "Image Analysis", "NanoEducator"]

File extension

pal

KS implementation details

License: Unlicense

This page hosts a formal specification of NT-MDT palette format using Kaitai Struct. This specification can be automatically translated into a variety of programming languages to get a parsing library.

Usage

Runtime library

All parsing code for JavaScript generated by Kaitai Struct depends on the JavaScript runtime library. You have to install it before you can parse data.

The JavaScript runtime library is available at npm:

npm install kaitai-struct

Code

See the usage examples in the JavaScript notes.

Parse structure from an ArrayBuffer:

var arrayBuffer = ...;
var data = new NtMdtPal(new KaitaiStream(arrayBuffer));

After that, one can get various attributes from the structure by accessing fields or properties like:

data.signature // => get signature

JavaScript source code to parse NT-MDT palette format

NtMdtPal.js

// This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild

(function (root, factory) {
  if (typeof define === 'function' && define.amd) {
    define(['kaitai-struct/KaitaiStream'], factory);
  } else if (typeof module === 'object' && module.exports) {
    module.exports = factory(require('kaitai-struct/KaitaiStream'));
  } else {
    root.NtMdtPal = factory(root.KaitaiStream);
  }
}(this, function (KaitaiStream) {
/**
 * It is a color scheme for visualising SPM scans.
 */

var NtMdtPal = (function() {
  function NtMdtPal(_io, _parent, _root) {
    this._io = _io;
    this._parent = _parent;
    this._root = _root || this;

    this._read();
  }
  NtMdtPal.prototype._read = function() {
    this.signature = this._io.readBytes(26);
    if (!((KaitaiStream.byteArrayCompare(this.signature, [78, 84, 45, 77, 68, 84, 32, 80, 97, 108, 101, 116, 116, 101, 32, 70, 105, 108, 101, 32, 32, 49, 46, 48, 48, 33]) == 0))) {
      throw new KaitaiStream.ValidationNotEqualError([78, 84, 45, 77, 68, 84, 32, 80, 97, 108, 101, 116, 116, 101, 32, 70, 105, 108, 101, 32, 32, 49, 46, 48, 48, 33], this.signature, this._io, "/seq/0");
    }
    this.count = this._io.readU4be();
    this.meta = new Array(this.count);
    for (var i = 0; i < this.count; i++) {
      this.meta[i] = new Meta(this._io, this, this._root);
    }
    this.something2 = this._io.readBytes(1);
    this.tables = new Array(this.count);
    for (var i = 0; i < this.count; i++) {
      this.tables[i] = new ColTable(this._io, this, this._root, i);
    }
  }

  var Meta = NtMdtPal.Meta = (function() {
    function Meta(_io, _parent, _root) {
      this._io = _io;
      this._parent = _parent;
      this._root = _root || this;

      this._read();
    }
    Meta.prototype._read = function() {
      this.unkn00 = this._io.readBytes(3);
      this.unkn01 = this._io.readBytes(2);
      this.unkn02 = this._io.readBytes(1);
      this.unkn03 = this._io.readBytes(1);
      this.colorsCount = this._io.readU2le();
      this.unkn10 = this._io.readBytes(2);
      this.unkn11 = this._io.readBytes(1);
      this.unkn12 = this._io.readBytes(2);
      this.nameSize = this._io.readU2be();
    }

    /**
     * usually 0s
     */

    /**
     * usually 0s
     */

    /**
     * usually 0s
     */

    /**
     * usually 4
     */

    /**
     * usually 0s
     */

    return Meta;
  })();

  var Color = NtMdtPal.Color = (function() {
    function Color(_io, _parent, _root) {
      this._io = _io;
      this._parent = _parent;
      this._root = _root || this;

      this._read();
    }
    Color.prototype._read = function() {
      this.red = this._io.readU1();
      this.unkn = this._io.readU1();
      this.blue = this._io.readU1();
      this.green = this._io.readU1();
    }

    return Color;
  })();

  var ColTable = NtMdtPal.ColTable = (function() {
    function ColTable(_io, _parent, _root, index) {
      this._io = _io;
      this._parent = _parent;
      this._root = _root || this;
      this.index = index;

      this._read();
    }
    ColTable.prototype._read = function() {
      this.size1 = this._io.readU1();
      this.unkn = this._io.readU1();
      this.title = KaitaiStream.bytesToStr(this._io.readBytes(this._root.meta[this.index].nameSize), "UTF-16");
      this.unkn1 = this._io.readU2be();
      this.colors = new Array((this._root.meta[this.index].colorsCount - 1));
      for (var i = 0; i < (this._root.meta[this.index].colorsCount - 1); i++) {
        this.colors[i] = new Color(this._io, this, this._root);
      }
    }

    return ColTable;
  })();

  return NtMdtPal;
})();
return NtMdtPal;
}));