DMleadgen
46d973904b
Next.js website for Rocky Mountain Vending company featuring: - Product catalog with Stripe integration - Service areas and parts pages - Admin dashboard with Clerk authentication - SEO optimized pages with JSON-LD structured data Co-authored-by: Cursor <cursoragent@cursor.com>
99 lines
No EOL
4.5 KiB
Text
99 lines
No EOL
4.5 KiB
Text
// Copyright 2022 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import * as Helpers from '../helpers/helpers.js';
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import * as Types from '../types/types.js';
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// Each thread contains events. Events indicate the thread and process IDs, which are
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// used to store the event in the correct process thread entry below.
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const unpairedAsyncEvents = [];
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const legacyScreenshotEvents = [];
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const modernScreenshotEvents = [];
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const syntheticScreenshots = [];
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let frameSequenceToTs = {};
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export function reset() {
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unpairedAsyncEvents.length = 0;
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legacyScreenshotEvents.length = 0;
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syntheticScreenshots.length = 0;
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modernScreenshotEvents.length = 0;
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frameSequenceToTs = {};
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}
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export function handleEvent(event) {
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if (Types.Events.isLegacyScreenshot(event)) {
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legacyScreenshotEvents.push(event);
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}
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else if (Types.Events.isScreenshot(event)) {
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modernScreenshotEvents.push(event);
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}
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else if (Types.Events.isPipelineReporter(event)) {
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unpairedAsyncEvents.push(event);
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}
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}
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export async function finalize() {
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const pipelineReporterEvents = Helpers.Trace.createMatchedSortedSyntheticEvents(unpairedAsyncEvents);
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frameSequenceToTs = Object.fromEntries(pipelineReporterEvents.map(evt => {
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const args = evt.args.data.beginEvent.args;
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const frameReporter = 'frame_reporter' in args ? args.frame_reporter : args.chrome_frame_reporter;
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const frameSequenceId = frameReporter.frame_sequence;
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const presentationTs = Types.Timing.Micro(evt.ts + evt.dur);
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return [frameSequenceId, presentationTs];
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}));
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for (const snapshotEvent of legacyScreenshotEvents) {
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const { cat, name, ph, pid, tid } = snapshotEvent;
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const syntheticEvent = Helpers.SyntheticEvents.SyntheticEventsManager.registerSyntheticEvent({
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rawSourceEvent: snapshotEvent,
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cat,
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name,
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ph,
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pid,
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tid,
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// TODO(paulirish, crbug.com/41363012): investigate why getPresentationTimestamp(snapshotEvent) seems less accurate. Resolve screenshot timing inaccuracy.
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// `getPresentationTimestamp(snapshotEvent) - snapshotEvent.ts` is how many microsec the screenshot should be adjusted to the right/later
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ts: snapshotEvent.ts,
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args: {
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dataUri: `data:image/jpg;base64,${snapshotEvent.args.snapshot}`,
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},
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});
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syntheticScreenshots.push(syntheticEvent);
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}
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}
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export function screenshotImageDataUri(event) {
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if (Types.Events.isLegacySyntheticScreenshot(event)) {
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return event.args.dataUri;
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}
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return `data:image/jpg;base64,${event.args.snapshot}`;
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}
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/**
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* Correct the screenshot timestamps
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* The screenshot 'snapshot object' trace event has the "frame sequence number" attached as an ID.
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* We match that up with the "PipelineReporter" trace events as they terminate at presentation.
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* Presentation == when the pixels hit the screen. AKA Swap on the GPU
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*/
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// eslint-disable-next-line @typescript-eslint/no-unused-vars
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function getPresentationTimestamp(screenshotEvent) {
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const frameSequence = parseInt(screenshotEvent.id, 16);
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// If it's 1, then it's an old trace (before https://crrev.com/c/4957973) and cannot be corrected.
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if (frameSequence === 1) {
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return screenshotEvent.ts;
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}
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// The screenshot trace event's `ts` reflects the "expected display time" which is ESTIMATE.
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// It is set by the compositor frame sink from the `expected_display_time`, which is based on a previously known
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// frame start PLUS the vsync interval (eg 16.6ms)
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const updatedTs = frameSequenceToTs[frameSequence];
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// Do we always find a match? No...
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// We generally don't match the very first screenshot and, sometimes, the last
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// The very first screenshot is requested immediately (even if nothing is painting). As a result there's no compositor
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// instrumentation running alongside.
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// The last one is sometimes missing as because the trace terminates right before the associated PipelineReporter is emitted.
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return updatedTs ?? screenshotEvent.ts;
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}
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// TODO(crbug/41484172): should be readonly
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export function data() {
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return {
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legacySyntheticScreenshots: syntheticScreenshots.length ? syntheticScreenshots : null,
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screenshots: modernScreenshotEvents.length ? modernScreenshotEvents : null,
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};
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}
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export function deps() {
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return ['Meta'];
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}
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//# sourceMappingURL=ScreenshotsHandler.js.map |