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     self._skp_outdir = skp_outdir
  18
  19   def CustomizeBrowserOptions(self, options):
  20     options.AppendExtraBrowserArgs(['--enable-gpu-benchmarking',
  21                                     '--no-sandbox',
  22                                     '--enable-deferred-image-decoding'])
  23
  24   def ValidateAndMeasurePage(self, page, tab, results):
  25     if tab.browser.platform.GetOSName() in ['android', 'chromeos']:
  26       raise page_test.MeasurementFailure(
  27           'SkPicture printing not supported on this platform')
  28
  29     # Replace win32 path separator char '\' with '\\'.
  30     outpath = os.path.abspath(
  31         os.path.join(self._skp_outdir, page.file_safe_name))
  32     js = _JS.format(outpath.replace('\\', '\\\\'))
  33     tab.EvaluateJavaScript(js)
  34     pictures = glob.glob(os.path.join(outpath, '*.skp'))
  35     results.AddValue(scalar.ScalarValue(
  36         results.current_page, 'saved_picture_count', 'count', len(pictures)))