tav-media/lib/libpag/src/utils/clock.js

Cross platform media editing framework

let getTime;
try {
    getTime = performance.now.bind(performance);
}
catch (e) {
    getTime = Date.now.bind(Date);
}
export class Clock {
    constructor() {
        this.startTime = getTime();
        this.markers = {};
    }
    reset() {
        this.startTime = getTime();
        this.markers = {};
    }
    mark(key) {
        if (!key) {
            console.log('Clock.mark(): An empty marker name was specified!');
            return;
        }
        if (Object.keys(this.markers).find((markerKey) => markerKey === key)) {
            console.log(`Clock.mark(): The specified marker name '${key}' already exists!`);
            return;
        }
        this.markers[key] = getTime();
    }
    measure(makerFrom, makerTo) {
        let start;
        let end;
        if (!makerFrom) {
            start = this.startTime;
        }
        else {
            if (!Object.keys(this.markers).find((markerKey) => markerKey === makerFrom)) {
                console.log(`Clock.measure(): The specified makerFrom '${makerFrom}' does not exist!`);
                return 0;
            }
            start = this.markers[makerFrom];
        }
        if (!makerTo) {
            end = getTime();
        }
        else {
            if (!Object.keys(this.markers).find((markerKey) => markerKey === makerTo)) {
                console.log(`Clock.measure(): The specified makerTo '${makerTo}' does not exist!`);
                return 0;
            }
            end = this.markers[makerTo];
        }
        return end - start;
    }
}