1 # Copyright 2015 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 """This is a server side internal microphone test using the Chameleon board.""" 6 7 import logging 8 import os 9 import time 10 11 from autotest_lib.client.cros.audio import audio_test_data 12 from autotest_lib.client.cros.chameleon import audio_test_utils 13 from autotest_lib.client.cros.chameleon import chameleon_audio_helper 14 from autotest_lib.client.cros.chameleon import chameleon_audio_ids 15 from autotest_lib.server.cros.audio import audio_test 16 from autotest_lib.server.cros.multimedia import remote_facade_factory 17 18 19 class audio_AudioBasicInternalMicrophone(audio_test.AudioTest): 20 """Server side internal microphone audio test. 21 22 This test talks to a Chameleon board and a Cros device to verify 23 internal mic audio function of the Cros device. 24 25 """ 26 version = 1 27 DELAY_BEFORE_RECORD_SECONDS = 0.5 28 RECORD_SECONDS = 9 29 DELAY_AFTER_BINDING = 0.5 30 31 def run_once(self, host, cfm_speaker=False): 32 """Runs Basic Audio Microphone test. 33 34 @param host: device under test CrosHost 35 @param cfm_speaker: whether cfm_speaker's audio is tested which is an 36 external USB speaker on CFM (ChromeBox For Meetings) devices. 37 38 """ 39 if (not cfm_speaker and 40 not audio_test_utils.has_internal_microphone(host)): 41 return 42 43 golden_file = audio_test_data.SIMPLE_FREQUENCY_TEST_1330_FILE 44 45 chameleon_board = host.chameleon 46 factory = remote_facade_factory.RemoteFacadeFactory( 47 host, results_dir=self.resultsdir) 48 49 chameleon_board.setup_and_reset(self.outputdir) 50 51 widget_factory = chameleon_audio_helper.AudioWidgetFactory( 52 factory, host) 53 54 source = widget_factory.create_widget( 55 chameleon_audio_ids.ChameleonIds.LINEOUT) 56 sink = widget_factory.create_widget( 57 chameleon_audio_ids.PeripheralIds.SPEAKER) 58 binder = widget_factory.create_binder(source, sink) 59 60 recorder = widget_factory.create_widget( 61 chameleon_audio_ids.CrosIds.INTERNAL_MIC) 62 63 with chameleon_audio_helper.bind_widgets(binder): 64 # Checks the node selected by cras is correct. 65 time.sleep(self.DELAY_AFTER_BINDING) 66 audio_facade = factory.create_audio_facade() 67 68 audio_test_utils.dump_cros_audio_logs( 69 host, audio_facade, self.resultsdir, 'after_binding') 70 71 if not cfm_speaker: 72 audio_test_utils.check_audio_nodes(audio_facade, 73 (None, ['INTERNAL_MIC'])) 74 else: 75 audio_test_utils.check_audio_nodes(audio_facade, 76 (None, ['USB'])) 77 78 logging.info('Setting playback data on Chameleon') 79 source.set_playback_data(golden_file) 80 81 # Starts playing, waits for some time, and then starts recording. 82 # This is to avoid artifact caused by chameleon codec initialization 83 # in the beginning of playback. 84 logging.info('Start playing %s from Chameleon', 85 golden_file.path) 86 source.start_playback() 87 88 time.sleep(self.DELAY_BEFORE_RECORD_SECONDS) 89 logging.info('Start recording from Cros device.') 90 recorder.start_recording() 91 92 time.sleep(self.RECORD_SECONDS) 93 94 recorder.stop_recording() 95 logging.info('Stopped recording from Cros device.') 96 97 audio_test_utils.dump_cros_audio_logs( 98 host, audio_facade, self.resultsdir, 'after_recording') 99 100 recorder.read_recorded_binary() 101 logging.info('Read recorded binary from Cros device.') 102 103 recorded_file = os.path.join(self.resultsdir, "recorded.raw") 104 logging.info('Saving recorded data to %s', recorded_file) 105 recorder.save_file(recorded_file) 106 107 # Removes the beginning of recorded data. This is to avoid artifact 108 # caused by Cros device codec initialization in the beginning of 109 # recording. 110 recorder.remove_head(1.0) 111 112 # Removes noise by a lowpass filter. 113 recorder.lowpass_filter(1500) 114 recorded_file = os.path.join(self.resultsdir, "recorded_filtered.raw") 115 logging.info('Saving filtered data to %s', recorded_file) 116 recorder.save_file(recorded_file) 117 118 # Cros device only records one channel data. Here we set the channel map 119 # of the recorder to compare the recorded data with left channel of the 120 # test data. This is fine as left and right channel of test data are 121 # identical. 122 recorder.channel_map = [0] 123 124 # Compares data by frequency. Audio signal from Chameleon Line-Out to 125 # speaker and finally recorded on Cros device using internal microphone 126 # has gone through analog processing and through the air. 127 # This suffers from codec artifacts and noise on the path. 128 # Comparing data by frequency is more robust than comparing them by 129 # correlation, which is suitable for fully-digital audio path like USB 130 # and HDMI. 131 audio_test_utils.check_recorded_frequency(golden_file, recorder, 132 second_peak_ratio=0.2) 133
