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.audio import cras_configs 13 from autotest_lib.client.cros.chameleon import audio_test_utils 14 from autotest_lib.client.cros.chameleon import chameleon_audio_helper 15 from autotest_lib.client.cros.chameleon import chameleon_audio_ids 16 from autotest_lib.server.cros.audio import audio_test 17 from autotest_lib.server.cros.multimedia import remote_facade_factory 18 19 20 class audio_AudioBasicInternalMicrophone(audio_test.AudioTest): 21 """Server side internal microphone audio test. 22 23 This test talks to a Chameleon board and a Cros device to verify 24 internal mic audio function of the Cros device. 25 26 """ 27 version = 1 28 DELAY_BEFORE_RECORD_SECONDS = 0.5 29 RECORD_SECONDS = 9 30 DELAY_AFTER_BINDING = 0.5 31 32 def run_once(self, host, cfm_speaker=False): 33 """Runs Basic Audio Microphone test. 34 35 @param host: device under test CrosHost 36 @param cfm_speaker: whether cfm_speaker's audio is tested which is an 37 external USB speaker on CFM (ChromeBox For Meetings) devices. 38 39 """ 40 if (not cfm_speaker and 41 not audio_test_utils.has_internal_microphone(host)): 42 return 43 44 golden_file = audio_test_data.SIMPLE_FREQUENCY_TEST_1330_FILE 45 46 chameleon_board = host.chameleon 47 factory = remote_facade_factory.RemoteFacadeFactory( 48 host, results_dir=self.resultsdir) 49 50 chameleon_board.setup_and_reset(self.outputdir) 51 52 widget_factory = chameleon_audio_helper.AudioWidgetFactory( 53 factory, host) 54 55 source = widget_factory.create_widget( 56 chameleon_audio_ids.ChameleonIds.LINEOUT) 57 sink = widget_factory.create_widget( 58 chameleon_audio_ids.PeripheralIds.SPEAKER) 59 binder = widget_factory.create_binder(source, sink) 60 61 recorder = widget_factory.create_widget( 62 chameleon_audio_ids.CrosIds.INTERNAL_MIC) 63 64 with chameleon_audio_helper.bind_widgets(binder): 65 # Checks the node selected by cras is correct. 66 time.sleep(self.DELAY_AFTER_BINDING) 67 audio_facade = factory.create_audio_facade() 68 69 audio_test_utils.dump_cros_audio_logs( 70 host, audio_facade, self.resultsdir, 'after_binding') 71 72 expected_internal_mic_node = cras_configs.get_internal_mic_node( 73 audio_test_utils.get_board_name(host), host.get_platform()) 74 if not cfm_speaker: 75 audio_test_utils.check_audio_nodes(audio_facade, 76 (None, [expected_internal_mic_node])) 77 else: 78 audio_test_utils.check_audio_nodes(audio_facade, 79 (None, ['USB'])) 80 81 logging.info('Setting playback data on Chameleon') 82 source.set_playback_data(golden_file) 83 84 # Starts playing, waits for some time, and then starts recording. 85 # This is to avoid artifact caused by chameleon codec initialization 86 # in the beginning of playback. 87 logging.info('Start playing %s from Chameleon', 88 golden_file.path) 89 source.start_playback() 90 91 time.sleep(self.DELAY_BEFORE_RECORD_SECONDS) 92 logging.info('Start recording from Cros device.') 93 recorder.start_recording() 94 95 time.sleep(self.RECORD_SECONDS) 96 97 recorder.stop_recording() 98 logging.info('Stopped recording from Cros device.') 99 100 audio_test_utils.dump_cros_audio_logs( 101 host, audio_facade, self.resultsdir, 'after_recording') 102 103 recorder.read_recorded_binary() 104 logging.info('Read recorded binary from Cros device.') 105 106 recorded_file = os.path.join(self.resultsdir, "recorded.raw") 107 logging.info('Saving recorded data to %s', recorded_file) 108 recorder.save_file(recorded_file) 109 110 # Removes the beginning of recorded data. This is to avoid artifact 111 # caused by Cros device codec initialization in the beginning of 112 # recording. 113 recorder.remove_head(1.0) 114 115 # Removes noise by a lowpass filter. 116 recorder.lowpass_filter(1500) 117 recorded_file = os.path.join(self.resultsdir, "recorded_filtered.raw") 118 logging.info('Saving filtered data to %s', recorded_file) 119 recorder.save_file(recorded_file) 120 121 # Cros device only records one channel data. Here we set the channel map 122 # of the recorder to compare the recorded data with left channel of the 123 # test data. This is fine as left and right channel of test data are 124 # identical. 125 recorder.channel_map = [0] 126 127 # Compares data by frequency. Audio signal from Chameleon Line-Out to 128 # speaker and finally recorded on Cros device using internal microphone 129 # has gone through analog processing and through the air. 130 # This suffers from codec artifacts and noise on the path. 131 # Comparing data by frequency is more robust than comparing them by 132 # correlation, which is suitable for fully-digital audio path like USB 133 # and HDMI. 134 audio_test_utils.check_recorded_frequency(golden_file, recorder, 135 second_peak_ratio=0.2) 136
