image-in-browser/lib/formats/webp/webp-huffman-code-list.js

Package for encoding / decoding images, transforming images, applying filters, drawing primitives on images on the client side (no need for server Node.js)

import { ArrayUtils } from '../../common/array-utils.js';
import { HuffmanCode } from './webp-huffman-code.js';
export class HuffmanCodeList {
    get length() {
        return this._htree.length - this._offset;
    }
    constructor(htree, offset = 0) {
        this._htree = htree;
        this._offset = offset;
    }
    static sized(size) {
        return new HuffmanCodeList(ArrayUtils.generate(size, () => new HuffmanCode()), 0);
    }
    static from(other, offset) {
        return new HuffmanCodeList(other._htree, other._offset + offset);
    }
    get(index) {
        return this._htree[this._offset + index];
    }
    set(index, code) {
        const target = this._htree[this._offset + index];
        target.bits = code.bits;
        target.value = code.value;
    }
}
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