tools/perf/measurements/webrtc.py

   1 # Copyright 2014 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 from metrics import cpu
   6 from metrics import media
   7 from metrics import memory
   8 from metrics import power
   9 from metrics import webrtc_stats
  10 from telemetry.page import page_test
  11
  12
  13 class WebRTC(page_test.PageTest):
  14   """Gathers WebRTC-related metrics on a page set."""
  15
  16   def __init__(self):
  17     super(WebRTC, self).__init__('RunPageInteractions')
  18     self._cpu_metric = None
  19     self._media_metric = None
  20     self._memory_metric = None
  21     self._power_metric = None
  22     self._webrtc_stats_metric = None
  23
  24   def WillStartBrowser(self, platform):
  25     self._power_metric = power.PowerMetric(platform)
  26
  27   def DidStartBrowser(self, browser):
  28     self._cpu_metric = cpu.CpuMetric(browser)
  29     self._memory_metric = memory.MemoryMetric(browser)
  30     self._webrtc_stats_metric = webrtc_stats.WebRtcStatisticsMetric()
  31
  32   def DidNavigateToPage(self, page, tab):
  33     self._cpu_metric.Start(page, tab)
  34     self._media_metric = media.MediaMetric(tab)
  35     self._media_metric.Start(page, tab)
  36     self._memory_metric.Start(page, tab)
  37     self._power_metric.Start(page, tab)
  38     self._webrtc_stats_metric.Start(page, tab)
  39
  40   def CustomizeBrowserOptions(self, options):
  41     memory.MemoryMetric.CustomizeBrowserOptions(options)
  42     options.AppendExtraBrowserArgs('--use-fake-device-for-media-stream')
  43     options.AppendExtraBrowserArgs('--use-fake-ui-for-media-stream')
  44     power.PowerMetric.CustomizeBrowserOptions(options)
  45
  46   def ValidateAndMeasurePage(self, page, tab, results):
  47     """Measure the page's performance."""
  48     self._cpu_metric.Stop(page, tab)
  49     self._cpu_metric.AddResults(tab, results)
  50
  51     # Add all media metrics except bytes (those aren't hooked up for WebRTC
  52     # video tags).
  53     exclude_metrics = ['decoded_video_bytes', 'decoded_audio_bytes']
  54     self._media_metric.Stop(page, tab)
  55     self._media_metric.AddResults(tab, results, exclude_metrics=exclude_metrics)
  56
  57     self._memory_metric.Stop(page, tab)
  58     self._memory_metric.AddResults(tab, results)
  59
  60     self._power_metric.Stop(page, tab)
  61     self._power_metric.AddResults(tab, results)
  62
  63     self._webrtc_stats_metric.Stop(page, tab)
  64     self._webrtc_stats_metric.AddResults(tab, results)