| # Copyright 2013 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Media measurement class gathers media related metrics on a page set. |
| |
| Media metrics recorded are controlled by metrics/media.js. At the end of the |
| test each metrics for every media element in the page are reported. |
| """ |
| import metrics.media |
| |
| from telemetry.page import page_measurement |
| |
| |
| class Media(page_measurement.PageMeasurement): |
| """Provide general video and audio metrics.""" |
| |
| def __init__(self): |
| super(Media, self).__init__('media_metrics') |
| self.metrics = None |
| |
| def results_are_the_same_on_every_page(self): |
| """Results can vary from page to page based on media events taking place.""" |
| return False |
| |
| def DidNavigateToPage(self, page, tab): |
| """Override to do operations right after the page is navigated.""" |
| self.metrics = metrics.media.MediaMetrics(tab) |
| self.metrics.Start() |
| |
| def MeasurePage(self, page, tab, results): |
| """Measure the page's performance.""" |
| self.metrics.StopAndGetResults(results) |
