headroom/frontend/node_modules/happy-dom/lib/nodes/html-media-element/MediaStreamTrack.js

import EventTarget from '../../event/EventTarget.js';
import * as PropertySymbol from '../../PropertySymbol.js';
import Crypto from 'crypto';
const CAPABILITIES = {
    aspectRatio: {
        max: 300,
        min: 0.006666666666666667
    },
    deviceId: '',
    facingMode: [],
    frameRate: {
        max: 60,
        min: 0
    },
    height: {
        max: 150,
        min: 1
    },
    resizeMode: ['none', 'crop-and-scale'],
    width: {
        max: 300,
        min: 1
    }
};
const SETTINGS = {
    deviceId: '',
    frameRate: 60,
    resizeMode: 'none'
};
/**
 * Canvas Capture Media Stream Track.
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrack
 */
export default class MediaStreamTrack extends EventTarget {
    contentHint = '';
    enabled = true;
    id = Crypto.randomUUID();
    muted = false;
    readyState = 'live';
    label = '';
    [PropertySymbol.label] = '';
    [PropertySymbol.kind] = 'video';
    [PropertySymbol.constraints] = {};
    [PropertySymbol.capabilities] = JSON.parse(JSON.stringify(CAPABILITIES));
    [PropertySymbol.settings] = JSON.parse(JSON.stringify(SETTINGS));
    // Events
    onended = null;
    onmute = null;
    onunmute = null;
    /**
     * Constructor.
     *
     * @param illegalConstructorSymbol Illegal constructor symbol.
     */
    constructor(illegalConstructorSymbol) {
        super();
        if (illegalConstructorSymbol !== PropertySymbol.illegalConstructor) {
            throw new TypeError('Illegal constructor');
        }
        if (!this[PropertySymbol.window]) {
            throw new TypeError(`Failed to construct '${this.constructor.name}': '${this.constructor.name}' was constructed outside a Window context.`);
        }
    }
    /**
     * Returns the kind of the track.
     *
     * @returns Kind.
     */
    get kind() {
        return this[PropertySymbol.kind];
    }
    /**
     * Applies constraints.
     *
     * @param _constraints Constraints.
     * @param constraints
     */
    async applyConstraints(constraints) {
        this.#mergeObjects(this[PropertySymbol.constraints], constraints);
    }
    /**
     * Returns constraints.
     *
     * @returns Constraints.
     */
    getConstraints() {
        return this[PropertySymbol.constraints];
    }
    /**
     * Returns capabilities.
     *
     * @returns Capabilities.
     */
    getCapabilities() {
        return this[PropertySymbol.capabilities];
    }
    /**
     * Returns settings.
     *
     * @returns Settings.
     */
    getSettings() {
        return this[PropertySymbol.settings];
    }
    /**
     * Clones the track.
     *
     * @returns Clone.
     */
    clone() {
        const clone = new this.constructor(PropertySymbol.illegalConstructor);
        clone[PropertySymbol.kind] = this[PropertySymbol.kind];
        clone[PropertySymbol.constraints] = this[PropertySymbol.constraints];
        clone[PropertySymbol.capabilities] = this[PropertySymbol.capabilities];
        clone[PropertySymbol.settings] = this[PropertySymbol.settings];
        clone.contentHint = this.contentHint;
        clone.enabled = this.enabled;
        clone.label = this.label;
        clone.muted = this.muted;
        clone.readyState = this.readyState;
        return clone;
    }
    /**
     * Stops the track.
     */
    stop() {
        this.readyState = 'ended';
    }
    /**
     * Merges two objects.
     *
     * @param source Target.
     * @param target Source.
     */
    #mergeObjects(source, target) {
        for (const key in target) {
            if (target[key] !== null && typeof target[key] === 'object' && !Array.isArray(target[key])) {
                if (typeof source[key] !== 'object') {
                    source[key] = {};
                }
                this.#mergeObjects(source[key], target[key]);
            }
            else {
                source[key] = target[key];
            }
        }
    }
}
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