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1 # Copyright 2012 The Chromium Authors. All rights reserved. | 1 # Copyright 2012 The Chromium Authors. All rights reserved. |
2 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
4 | 4 |
5 from metrics import power | 5 from metrics import power |
6 from telemetry.page import page_measurement | 6 from telemetry.page import page_measurement |
7 from telemetry.core.timeline import model | 7 from telemetry.timeline import model |
8 | 8 |
9 | 9 |
10 class ImageDecoding(page_measurement.PageMeasurement): | 10 class ImageDecoding(page_measurement.PageMeasurement): |
11 def __init__(self): | 11 def __init__(self): |
12 super(ImageDecoding, self).__init__() | 12 super(ImageDecoding, self).__init__() |
13 self._power_metric = power.PowerMetric() | 13 self._power_metric = power.PowerMetric() |
14 | 14 |
15 def CustomizeBrowserOptions(self, options): | 15 def CustomizeBrowserOptions(self, options): |
16 options.AppendExtraBrowserArgs('--enable-gpu-benchmarking') | 16 options.AppendExtraBrowserArgs('--enable-gpu-benchmarking') |
17 power.PowerMetric.CustomizeBrowserOptions(options) | 17 power.PowerMetric.CustomizeBrowserOptions(options) |
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58 assert durations, 'Failed to find "Decode Image" trace events.' | 58 assert durations, 'Failed to find "Decode Image" trace events.' |
59 | 59 |
60 image_decoding_avg = sum(durations) / len(durations) | 60 image_decoding_avg = sum(durations) / len(durations) |
61 results.Add('ImageDecoding_avg', 'ms', image_decoding_avg) | 61 results.Add('ImageDecoding_avg', 'ms', image_decoding_avg) |
62 results.Add('ImageLoading_avg', 'ms', | 62 results.Add('ImageLoading_avg', 'ms', |
63 tab.EvaluateJavaScript('averageLoadingTimeMs()')) | 63 tab.EvaluateJavaScript('averageLoadingTimeMs()')) |
64 | 64 |
65 def CleanUpAfterPage(self, page, tab): | 65 def CleanUpAfterPage(self, page, tab): |
66 if tab.browser.is_tracing_running: | 66 if tab.browser.is_tracing_running: |
67 tab.browser.StopTracing() | 67 tab.browser.StopTracing() |
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