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1 # Copyright 2013 The Chromium Authors. All rights reserved. | 1 # Copyright 2013 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 import logging | 5 import logging |
6 import os | 6 import os |
7 | 7 |
8 from telemetry.value import list_of_scalar_values | 8 from telemetry.value import list_of_scalar_values |
9 from telemetry.value import scalar | 9 from telemetry.value import scalar |
10 | 10 |
11 from metrics import Metric | 11 from metrics import Metric |
12 | 12 |
13 | 13 |
14 class MediaMetric(Metric): | 14 class MediaMetric(Metric): |
15 """MediaMetric class injects and calls JS responsible for recording metrics. | 15 """MediaMetric class injects and calls JS responsible for recording metrics. |
16 | 16 |
17 Default media metrics are collected for every media element in the page, | 17 Default media metrics are collected for every media element in the page, |
18 such as decoded_frame_count, dropped_frame_count, decoded_video_bytes, and | 18 such as decoded_frame_count, dropped_frame_count, decoded_video_bytes, and |
19 decoded_audio_bytes. | 19 decoded_audio_bytes. |
20 """ | 20 """ |
21 | 21 |
22 def __init__(self, tab): | 22 def __init__(self, tab): |
23 super(MediaMetric, self).__init__() | 23 super(MediaMetric, self).__init__() |
24 with open(os.path.join(os.path.dirname(__file__), 'media.js')) as f: | 24 with open(os.path.join(os.path.dirname(__file__), 'media.js')) as f: |
25 js = f.read() | 25 js = f.read() |
26 tab.ExecuteJavaScript2(js) | 26 tab.ExecuteJavaScript(js) |
27 self._results = None | 27 self._results = None |
28 self._skip_basic_metrics = False | 28 self._skip_basic_metrics = False |
29 | 29 |
30 def Start(self, page, tab): | 30 def Start(self, page, tab): |
31 """Create the media metrics for all media elements in the document.""" | 31 """Create the media metrics for all media elements in the document.""" |
32 if hasattr(page, 'skip_basic_metrics'): | 32 if hasattr(page, 'skip_basic_metrics'): |
33 self._skip_basic_metrics = page.skip_basic_metrics | 33 self._skip_basic_metrics = page.skip_basic_metrics |
34 tab.ExecuteJavaScript2('window.__createMediaMetricsForDocument()') | 34 tab.ExecuteJavaScript('window.__createMediaMetricsForDocument()') |
35 | 35 |
36 def Stop(self, page, tab): | 36 def Stop(self, page, tab): |
37 self._results = tab.EvaluateJavaScript2('window.__getAllMetrics()') | 37 self._results = tab.EvaluateJavaScript('window.__getAllMetrics()') |
38 | 38 |
39 # Optional |exclude_metrics| args are not in base class Metric. | 39 # Optional |exclude_metrics| args are not in base class Metric. |
40 # pylint: disable=arguments-differ | 40 # pylint: disable=arguments-differ |
41 def AddResults(self, tab, results, exclude_metrics=None): | 41 def AddResults(self, tab, results, exclude_metrics=None): |
42 """Reports all recorded metrics as Telemetry perf results.""" | 42 """Reports all recorded metrics as Telemetry perf results.""" |
43 exclude_metrics = exclude_metrics or [] | 43 exclude_metrics = exclude_metrics or [] |
44 trace_names = [] | 44 trace_names = [] |
45 for media_metric in self._results: | 45 for media_metric in self._results: |
46 trace_names.append(self._AddResultsForMediaElement(media_metric, results, | 46 trace_names.append(self._AddResultsForMediaElement(media_metric, results, |
47 exclude_metrics)) | 47 exclude_metrics)) |
(...skipping 41 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
89 AddOneResult('buffering_time', 'ms') | 89 AddOneResult('buffering_time', 'ms') |
90 AddOneResult('decoded_audio_bytes', 'bytes') | 90 AddOneResult('decoded_audio_bytes', 'bytes') |
91 AddOneResult('decoded_video_bytes', 'bytes') | 91 AddOneResult('decoded_video_bytes', 'bytes') |
92 AddOneResult('decoded_frame_count', 'frames') | 92 AddOneResult('decoded_frame_count', 'frames') |
93 AddOneResult('dropped_frame_count', 'frames') | 93 AddOneResult('dropped_frame_count', 'frames') |
94 AddOneResult('time_to_play', 'ms') | 94 AddOneResult('time_to_play', 'ms') |
95 | 95 |
96 AddOneResult('avg_loop_time', 'ms') | 96 AddOneResult('avg_loop_time', 'ms') |
97 AddOneResult('seek', 'ms') | 97 AddOneResult('seek', 'ms') |
98 return trace | 98 return trace |
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