| # Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import logging, threading, time |
| from autotest_lib.client.bin import utils |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.client.cros import cros_ui_test, power_utils, rtc |
| from autotest_lib.client.cros.audio import audio_helper |
| |
| class power_AudioDetector(cros_ui_test.UITest): |
| version = 1 |
| |
| def run_once(self, run_time_sec=60): |
| if run_time_sec < 10: |
| raise error.TestFail('Must run for at least 10 seconds') |
| |
| # Start powerd if not started. Set timeouts for quick idle events. |
| run_time_ms = run_time_sec * 1000 |
| react_ms = min(10000, run_time_ms / 10) |
| gap_ms = run_time_ms / 4 |
| dim_ms = min(10000, gap_ms) |
| off_ms = min(20000, gap_ms * 2) |
| suspend_ms = min(30000, gap_ms * 3) |
| prefs = { 'disable_idle_suspend' : 0, |
| 'ignore_external_policy' : 1, |
| 'plugged_dim_ms' : dim_ms, |
| 'plugged_off_ms' : off_ms, |
| 'plugged_suspend_ms' : suspend_ms, |
| 'unplugged_dim_ms' : dim_ms, |
| 'unplugged_off_ms' : off_ms, |
| 'unplugged_suspend_ms' : suspend_ms } |
| self._pref_change = power_utils.PowerPrefChanger(prefs) |
| |
| # Audio loop time should be significantly shorter than |run_time_sec| |
| # time, so that the total playback time doesn't exceed it by much. |
| audio_loop_time_sec = (react_ms + 500) / 1000 |
| |
| self.login() |
| |
| # Set a low audio volume to avoid annoying people during tests. |
| audio_helper.set_volume_levels(10, 100) |
| |
| # Start playing audio file. |
| self._enable_audio_playback = True |
| thread = threading.Thread(target=self._play_audio, |
| args=(audio_loop_time_sec,)) |
| thread.start() |
| |
| # Set an alarm to wake up the system in case the audio detector fails |
| # and the system suspends. |
| alarm_time = rtc.get_seconds() + run_time_sec |
| rtc.set_wake_alarm(alarm_time) |
| |
| time.sleep(run_time_sec) |
| |
| # Stop powerd to avoid suspending when the audio stops. |
| utils.system_output('stop powerd') |
| |
| # Stop audio and wait for the audio thread to terminate. |
| self._enable_audio_playback = False |
| thread.join(timeout=(audio_loop_time_sec * 2)) |
| if thread.is_alive(): |
| logging.error('Audio thread did not terminate at end of test.') |
| |
| # Check powerd's log to make sure that no suspend took place. |
| powerd_log_path = '/var/log/power_manager/powerd.LATEST' |
| log = open(powerd_log_path, 'r').read() |
| if log.find('Starting suspend') != -1: |
| raise error.TestFail('System suspended while audio was playing.') |
| |
| |
| def cleanup(self): |
| if self.logged_in(): |
| self.logout() |
| utils.restart_job('powerd') |
| |
| |
| def _play_audio(self, loop_time): |
| """ |
| Repeatedly plays audio until self._audio_playback_enabled == False. |
| """ |
| # TODO(crosbug.com/33988): Allow for pauses in audio playback to |
| # simulate delays in loading the next song. |
| while self._enable_audio_playback: |
| audio_helper.play_sound(duration_seconds=loop_time) |
| logging.info('Done playing audio.') |