| # Copyright 2015 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. |
| |
| """This is a server side internal microphone test using the Chameleon board.""" |
| |
| import logging |
| import os |
| import time |
| |
| from autotest_lib.client.cros.audio import audio_test_data |
| from autotest_lib.client.cros.chameleon import audio_test_utils |
| from autotest_lib.client.cros.chameleon import chameleon_audio_helper |
| from autotest_lib.client.cros.chameleon import chameleon_audio_ids |
| from autotest_lib.server.cros.audio import audio_test |
| from autotest_lib.server.cros.multimedia import remote_facade_factory |
| |
| |
| class audio_AudioBasicInternalMicrophone(audio_test.AudioTest): |
| """Server side internal microphone audio test. |
| |
| This test talks to a Chameleon board and a Cros device to verify |
| internal mic audio function of the Cros device. |
| |
| """ |
| version = 1 |
| DELAY_BEFORE_RECORD_SECONDS = 0.5 |
| RECORD_SECONDS = 9 |
| DELAY_AFTER_BINDING = 0.5 |
| |
| def run_once(self, host, cfm_speaker=False): |
| """Runs Basic Audio Microphone test. |
| |
| @param host: device under test CrosHost |
| @param cfm_speaker: whether cfm_speaker's audio is tested which is an |
| external USB speaker on CFM (ChromeBox For Meetings) devices. |
| |
| """ |
| if (not cfm_speaker and |
| not audio_test_utils.has_internal_microphone(host)): |
| return |
| |
| golden_file = audio_test_data.SIMPLE_FREQUENCY_TEST_1330_FILE |
| |
| chameleon_board = host.chameleon |
| factory = remote_facade_factory.RemoteFacadeFactory( |
| host, results_dir=self.resultsdir) |
| |
| chameleon_board.setup_and_reset(self.outputdir) |
| |
| widget_factory = chameleon_audio_helper.AudioWidgetFactory( |
| factory, host) |
| |
| source = widget_factory.create_widget( |
| chameleon_audio_ids.ChameleonIds.LINEOUT) |
| sink = widget_factory.create_widget( |
| chameleon_audio_ids.PeripheralIds.SPEAKER) |
| binder = widget_factory.create_binder(source, sink) |
| |
| recorder = widget_factory.create_widget( |
| chameleon_audio_ids.CrosIds.INTERNAL_MIC) |
| |
| with chameleon_audio_helper.bind_widgets(binder): |
| # Checks the node selected by cras is correct. |
| time.sleep(self.DELAY_AFTER_BINDING) |
| audio_facade = factory.create_audio_facade() |
| |
| audio_test_utils.dump_cros_audio_logs( |
| host, audio_facade, self.resultsdir, 'after_binding') |
| |
| expected_internal_mic_node = audio_test_utils.get_internal_mic_node( |
| host) |
| if not cfm_speaker: |
| audio_test_utils.check_audio_nodes(audio_facade, |
| (None, [expected_internal_mic_node])) |
| else: |
| audio_test_utils.check_audio_nodes(audio_facade, |
| (None, ['USB'])) |
| |
| logging.info('Setting playback data on Chameleon') |
| source.set_playback_data(golden_file) |
| |
| # Starts playing, waits for some time, and then starts recording. |
| # This is to avoid artifact caused by chameleon codec initialization |
| # in the beginning of playback. |
| logging.info('Start playing %s from Chameleon', |
| golden_file.path) |
| source.start_playback() |
| |
| time.sleep(self.DELAY_BEFORE_RECORD_SECONDS) |
| logging.info('Start recording from Cros device.') |
| recorder.start_recording() |
| |
| time.sleep(self.RECORD_SECONDS) |
| |
| recorder.stop_recording() |
| logging.info('Stopped recording from Cros device.') |
| |
| audio_test_utils.dump_cros_audio_logs( |
| host, audio_facade, self.resultsdir, 'after_recording') |
| |
| recorder.read_recorded_binary() |
| logging.info('Read recorded binary from Cros device.') |
| |
| recorded_file = os.path.join(self.resultsdir, "recorded.raw") |
| logging.info('Saving recorded data to %s', recorded_file) |
| recorder.save_file(recorded_file) |
| |
| # Removes the beginning of recorded data. This is to avoid artifact |
| # caused by Cros device codec initialization in the beginning of |
| # recording. |
| recorder.remove_head(1.0) |
| |
| # Removes noise by a lowpass filter. |
| recorder.lowpass_filter(1500) |
| recorded_file = os.path.join(self.resultsdir, "recorded_filtered.raw") |
| logging.info('Saving filtered data to %s', recorded_file) |
| recorder.save_file(recorded_file) |
| |
| # Cros device only records one channel data. Here we set the channel map |
| # of the recorder to compare the recorded data with left channel of the |
| # test data. This is fine as left and right channel of test data are |
| # identical. |
| recorder.channel_map = [0] |
| |
| # Compares data by frequency. Audio signal from Chameleon Line-Out to |
| # speaker and finally recorded on Cros device using internal microphone |
| # has gone through analog processing and through the air. |
| # This suffers from codec artifacts and noise on the path. |
| # Comparing data by frequency is more robust than comparing them by |
| # correlation, which is suitable for fully-digital audio path like USB |
| # and HDMI. |
| audio_test_utils.check_recorded_frequency(golden_file, recorder, |
| second_peak_ratio=0.2) |