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 speaker test using the Chameleon board.""" 6 7import logging 8import os 9import time 10 11from autotest_lib.client.common_lib import error 12from autotest_lib.client.cros.audio import audio_test_data 13from autotest_lib.client.cros.chameleon import audio_test_utils 14from autotest_lib.client.cros.chameleon import chameleon_audio_helper 15from autotest_lib.client.cros.chameleon import chameleon_audio_ids 16from autotest_lib.server.cros.audio import audio_test 17 18 19class audio_AudioBasicInternalSpeaker(audio_test.AudioTest): 20 """Server side internal speaker audio test. 21 22 This test talks to a Chameleon board and a Cros device to verify 23 internal speaker audio function of the Cros device. 24 25 """ 26 version = 1 27 DELAY_BEFORE_RECORD_SECONDS = 0.5 28 RECORD_SECONDS = 8 29 30 def run_once(self, host): 31 32 if not audio_test_utils.has_internal_speaker(host): 33 return 34 35 golden_file = audio_test_data.SIMPLE_FREQUENCY_SPEAKER_TEST_FILE 36 37 chameleon_board = host.chameleon 38 factory = self.create_remote_facade_factory(host) 39 40 chameleon_board.reset() 41 42 widget_factory = chameleon_audio_helper.AudioWidgetFactory( 43 factory, host) 44 45 source = widget_factory.create_widget( 46 chameleon_audio_ids.CrosIds.SPEAKER) 47 48 recorder = widget_factory.create_widget( 49 chameleon_audio_ids.ChameleonIds.MIC) 50 51 audio_facade = factory.create_audio_facade() 52 53 audio_test_utils.dump_cros_audio_logs( 54 host, audio_facade, self.resultsdir, 'start') 55 56 # Checks the node selected by cras is correct. 57 output_nodes, _ = audio_facade.get_selected_node_types() 58 if output_nodes != ['INTERNAL_SPEAKER']: 59 raise error.TestFail( 60 '%s rather than internal speaker is selected on Cros ' 61 'device' % output_nodes) 62 63 audio_facade.set_selected_output_volume(80) 64 65 logging.info('Setting playback data on Cros device') 66 source.set_playback_data(golden_file) 67 68 # Starts playing, waits for some time, and then starts recording. 69 # This is to avoid artifact caused by codec initialization. 70 logging.info('Start playing %s on Cros device', 71 golden_file.path) 72 source.start_playback() 73 74 time.sleep(self.DELAY_BEFORE_RECORD_SECONDS) 75 logging.info('Start recording from Chameleon.') 76 recorder.start_recording() 77 78 time.sleep(self.RECORD_SECONDS) 79 80 recorder.stop_recording() 81 logging.info('Stopped recording from Chameleon.') 82 83 audio_test_utils.dump_cros_audio_logs( 84 host, audio_facade, self.resultsdir, 'after_recording') 85 86 recorder.read_recorded_binary() 87 logging.info('Read recorded binary from Chameleon.') 88 89 recorded_file = os.path.join(self.resultsdir, "recorded.raw") 90 logging.info('Saving recorded data to %s', recorded_file) 91 recorder.save_file(recorded_file) 92 93 # Removes the beginning of recorded data. This is to avoid artifact 94 # caused by Chameleon codec initialization in the beginning of 95 # recording. 96 recorder.remove_head(0.5) 97 98 # Removes noise by a lowpass filter. 99 recorder.lowpass_filter(1000) 100 recorded_file = os.path.join(self.resultsdir, "recorded_filtered.raw") 101 logging.info('Saving filtered data to %s', recorded_file) 102 recorder.save_file(recorded_file) 103 104 # Compares data by frequency. Audio signal recorded by microphone has 105 # gone through analog processing and through the air. 106 # This suffers from codec artifacts and noise on the path. 107 # Comparing data by frequency is more robust than comparing by 108 # correlation, which is suitable for fully-digital audio path like USB 109 # and HDMI. 110 audio_test_utils.check_recorded_frequency(golden_file, recorder, 111 second_peak_ratio=0.1, 112 ignore_frequencies=[50, 60]) 113