| # 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. |
| |
| from metrics import cpu |
| from metrics import media |
| from metrics import system_memory |
| from metrics import power |
| from telemetry.page import page_measurement |
| |
| |
| class Media(page_measurement.PageMeasurement): |
| """The MediaMeasurement 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 metric for every media element in the page are reported. |
| """ |
| |
| def __init__(self): |
| super(Media, self).__init__('RunMediaMetrics') |
| self._media_metric = None |
| # Used to add browser power and CPU metrics to results per test. |
| self._add_browser_metrics = False |
| self._cpu_metric = None |
| self._memory_metric = None |
| self._power_metric = power.PowerMetric() |
| |
| 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 CustomizeBrowserOptions(self, options): |
| # Needed to run media actions in JS on touch-based devices as on Android. |
| options.AppendExtraBrowserArgs( |
| '--disable-gesture-requirement-for-media-playback') |
| power.PowerMetric.CustomizeBrowserOptions(options) |
| |
| def DidNavigateToPage(self, page, tab): |
| """Override to do operations right after the page is navigated.""" |
| self._media_metric = media.MediaMetric(tab) |
| self._media_metric.Start(page, tab) |
| |
| # Reset to false for every page. |
| self._add_browser_metrics = (page.add_browser_metrics |
| if hasattr(page, 'add_browser_metrics') else False) |
| |
| if self._add_browser_metrics: |
| self._cpu_metric = cpu.CpuMetric(tab.browser) |
| self._cpu_metric.Start(page, tab) |
| self._memory_metric = system_memory.SystemMemoryMetric(tab.browser) |
| self._memory_metric.Start(page, tab) |
| self._power_metric.Start(page, tab) |
| |
| def MeasurePage(self, page, tab, results): |
| """Measure the page's performance.""" |
| self._media_metric.Stop(page, tab) |
| trace_name = self._media_metric.AddResults(tab, results) |
| |
| if self._add_browser_metrics: |
| self._cpu_metric.Stop(page, tab) |
| self._memory_metric.Stop(page, tab) |
| self._power_metric.Stop(page, tab) |
| self._cpu_metric.AddResults(tab, results, trace_name=trace_name) |
| exclude_metrics = ['WorkingSetSizePeak', 'SystemCommitCharge', 'VMPeak', |
| 'VM'] |
| self._memory_metric.AddResults(tab, results, |
| trace_name=trace_name, |
| exclude_metrics=exclude_metrics) |
| self._power_metric.AddResults(tab, results) |
| |
