image-in-browser/lib/exif/ifd-value/ifd-undefined-value.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 { IfdValue } from './ifd-value.js';
import { IfdValueType } from '../ifd-value-type.js';
import { ArrayUtils } from '../../common/array-utils.js';
export class IfdUndefinedValue extends IfdValue {
    get type() {
        return IfdValueType.undefined;
    }
    get length() {
        return this._value.length;
    }
    constructor(value) {
        super();
        if (typeof value === 'number') {
            this._value = new Uint8Array(1);
            this._value[0] = value;
        }
        else {
            this._value = value;
        }
    }
    static data(data, offset, length) {
        const array = new Uint8Array(data.toUint8Array(offset, length));
        return new IfdUndefinedValue(array);
    }
    toData() {
        return this._value;
    }
    write(out) {
        out.writeBytes(this._value);
    }
    equals(other) {
        return (other instanceof IfdUndefinedValue &&
            this.length === other.length &&
            ArrayUtils.equals(this._value, other._value));
    }
    clone() {
        return new IfdUndefinedValue(this._value);
    }
    toString() {
        return `${this.constructor.name} (undefined)`;
    }
}
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