1 # Copyright (c) 2014 The Chromium OS 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 5 from contextlib import closing 6 import logging 7 import os 8 9 from autotest_lib.client.bin import test 10 from autotest_lib.client.common_lib import file_utils 11 from autotest_lib.client.common_lib.cros import chrome 12 from autotest_lib.client.cros.video import histogram_verifier 13 14 15 # Chrome flags to use fake camera and skip camera permission. 16 EXTRA_BROWSER_ARGS = ['--use-fake-device-for-media-stream', 17 '--use-fake-ui-for-media-stream'] 18 FAKE_FILE_ARG = '--use-file-for-fake-video-capture="%s"' 19 DOWNLOAD_BASE = 'http://commondatastorage.googleapis.com/chromiumos-test-assets-public/crowd/' 20 21 HISTOGRAMS_URL = 'chrome://histograms/' 22 23 24 class video_ChromeRTCHWDecodeUsed(test.test): 25 """The test verifies HW Encoding for WebRTC video.""" 26 version = 1 27 28 29 def start_loopback(self, cr): 30 """ 31 Opens WebRTC loopback page. 32 33 @param cr: Autotest Chrome instance. 34 """ 35 tab = cr.browser.tabs[0] 36 tab.Navigate(cr.browser.platform.http_server.UrlOf( 37 os.path.join(self.bindir, 'loopback.html'))) 38 tab.WaitForDocumentReadyStateToBeComplete() 39 40 41 def run_once(self, video_name, histogram_name, histogram_bucket_val): 42 # Download test video. 43 url = DOWNLOAD_BASE + video_name 44 local_path = os.path.join(self.bindir, video_name) 45 file_utils.download_file(url, local_path) 46 47 # Start chrome with test flags. 48 EXTRA_BROWSER_ARGS.append(FAKE_FILE_ARG % local_path) 49 with chrome.Chrome(extra_browser_args=EXTRA_BROWSER_ARGS) as cr: 50 # Open WebRTC loopback page. 51 cr.browser.platform.SetHTTPServerDirectories(self.bindir) 52 self.start_loopback(cr) 53 54 # Make sure decode is hardware accelerated. 55 histogram_verifier.verify(cr, histogram_name, histogram_bucket_val) 56
