76 lines
2.8 KiB
Python
76 lines
2.8 KiB
Python
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# Copyright (c) 2013 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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from metrics import loading
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from metrics import smoothness
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from metrics.gpu_rendering_stats import GpuRenderingStats
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from telemetry.page import page_measurement
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class DidNotScrollException(page_measurement.MeasurementFailure):
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def __init__(self):
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super(DidNotScrollException, self).__init__('Page did not scroll')
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class MissingDisplayFrameRate(page_measurement.MeasurementFailure):
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def __init__(self, name):
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super(MissingDisplayFrameRate, self).__init__(
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'Missing display frame rate metrics: ' + name)
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class Smoothness(page_measurement.PageMeasurement):
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def __init__(self):
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super(Smoothness, self).__init__('smoothness')
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self.force_enable_threaded_compositing = False
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self.use_gpu_benchmarking_extension = True
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self._metrics = None
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def AddCommandLineOptions(self, parser):
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parser.add_option('--report-all-results', dest='report_all_results',
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action='store_true',
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help='Reports all data collected, not just FPS')
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def CustomizeBrowserOptions(self, options):
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if self.use_gpu_benchmarking_extension:
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options.extra_browser_args.append('--enable-gpu-benchmarking')
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if self.force_enable_threaded_compositing:
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options.extra_browser_args.append('--enable-threaded-compositing')
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def CanRunForPage(self, page):
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return hasattr(page, 'smoothness')
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def WillRunAction(self, page, tab, action):
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if tab.browser.platform.IsRawDisplayFrameRateSupported():
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tab.browser.platform.StartRawDisplayFrameRateMeasurement()
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self._metrics = smoothness.SmoothnessMetrics(tab)
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if action.CanBeBound():
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self._metrics.BindToAction(action)
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else:
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self._metrics.Start()
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def DidRunAction(self, page, tab, action):
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if tab.browser.platform.IsRawDisplayFrameRateSupported():
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tab.browser.platform.StopRawDisplayFrameRateMeasurement()
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if not action.CanBeBound():
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self._metrics.Stop()
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def MeasurePage(self, page, tab, results):
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rendering_stats_deltas = self._metrics.deltas
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if not (rendering_stats_deltas['numFramesSentToScreen'] > 0):
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raise DidNotScrollException()
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loading.LoadingMetric().AddResults(tab, results)
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smoothness.CalcFirstPaintTimeResults(results, tab)
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benchmark_stats = GpuRenderingStats(rendering_stats_deltas)
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smoothness.CalcResults(benchmark_stats, results)
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if self.options.report_all_results:
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for k, v in rendering_stats_deltas.iteritems():
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results.Add(k, '', v)
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if tab.browser.platform.IsRawDisplayFrameRateSupported():
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for r in tab.browser.platform.GetRawDisplayFrameRateMeasurements():
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if r.value is None:
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raise MissingDisplayFrameRate(r.name)
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results.Add(r.name, r.unit, r.value)
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