| # Copyright (c) 2012 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 telemetry import multi_page_benchmark |
| from telemetry import util |
| |
| |
| class ImageDecoding(multi_page_benchmark.MultiPageBenchmark): |
| def MeasurePage(self, _, tab, results): |
| def _IsDone(): |
| return tab.runtime.Evaluate('isDone') |
| |
| with tab.timeline.Recorder(tab.timeline): |
| tab.runtime.Execute('runBenchmark()') |
| util.WaitFor(_IsDone, 60) |
| iterations = tab.runtime.Evaluate('minIterations') |
| decode_image = tab.timeline.timeline_events.GetAllOfType('DecodeImage') |
| elapsed_times = [d.elapsed_time for d in decode_image[-iterations:]] |
| if not elapsed_times: |
| results.Add('ImageDecoding_avg', 'ms', 'unsupported') |
| return |
| image_decoding_avg = sum(elapsed_times) / len(elapsed_times) |
| results.Add('ImageDecoding_avg', 'ms', image_decoding_avg) |
