tools/perf/measurements/skpicture_printer.py

   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
   3 # found in the LICENSE file.
   4 import glob
   5 import os
   6
   7 from telemetry.page import page_test
   8 from telemetry.value import scalar
   9
  10
  11 _JS = 'chrome.gpuBenchmarking.printToSkPicture("{0}");'
  12
  13
  14 class SkpicturePrinter(page_test.PageTest):
  15   def __init__(self, skp_outdir):
  16     super(SkpicturePrinter, self).__init__(
  17         action_name_to_run='RunPageInteractions')
  18     self._skp_outdir = skp_outdir
  19
  20   def CustomizeBrowserOptions(self, options):
  21     options.AppendExtraBrowserArgs(['--enable-gpu-benchmarking',
  22                                     '--no-sandbox',
  23                                     '--enable-deferred-image-decoding'])
  24
  25   def ValidateAndMeasurePage(self, page, tab, results):
  26     if tab.browser.platform.GetOSName() in ['android', 'chromeos']:
  27       raise page_test.MeasurementFailure(
  28           'SkPicture printing not supported on this platform')
  29
  30     # Replace win32 path separator char '\' with '\\'.
  31     outpath = os.path.abspath(
  32         os.path.join(self._skp_outdir, page.file_safe_name))
  33     js = _JS.format(outpath.replace('\\', '\\\\'))
  34     tab.EvaluateJavaScript(js)
  35     pictures = glob.glob(os.path.join(outpath, '*.skp'))
  36     results.AddValue(scalar.ScalarValue(
  37         results.current_page, 'saved_picture_count', 'count', len(pictures)))