114 lines
4.5 KiB
Python
114 lines
4.5 KiB
Python
# Copyright 2014 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""This is a server side headphone audio test using the Chameleon board."""
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import logging
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import os
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import time
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from autotest_lib.client.common_lib import error
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from autotest_lib.client.cros.audio import audio_test_data
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from autotest_lib.client.cros.chameleon import audio_test_utils
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from autotest_lib.client.cros.chameleon import chameleon_audio_ids
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from autotest_lib.client.cros.chameleon import chameleon_audio_helper
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from autotest_lib.server.cros.audio import audio_test
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class audio_AudioBasicHeadphone(audio_test.AudioTest):
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"""Server side headphone audio test.
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This test talks to a Chameleon board and a Cros device to verify
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headphone audio function of the Cros device.
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"""
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version = 1
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DELAY_BEFORE_RECORD_SECONDS = 0.5
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RECORD_SECONDS = 5
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DELAY_AFTER_BINDING = 0.5
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SILENCE_WAIT = 5
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def run_once(self, check_quality=False):
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"""Running basic headphone audio tests.
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@param check_quality: flag to check audio quality.
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"""
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if not audio_test_utils.has_audio_jack(self.host):
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raise error.TestNAError(
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'No audio jack for the DUT.'
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' Confirm swarming bot dimension and control file'
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' dependency for audio jack is matching.'
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' For new boards, has_audio_jack might need to be updated.'
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)
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golden_file = audio_test_data.GenerateAudioTestData(
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path=os.path.join(self.bindir, 'fix_1k_440_16.wav'),
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duration_secs=6,
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frequencies=[1000, 440])
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source = self.widget_factory.create_widget(
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chameleon_audio_ids.CrosIds.HEADPHONE)
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recorder = self.widget_factory.create_widget(
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chameleon_audio_ids.ChameleonIds.LINEIN)
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binder = self.widget_factory.create_binder(source, recorder)
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with chameleon_audio_helper.bind_widgets(binder):
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time.sleep(self.DELAY_AFTER_BINDING)
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audio_test_utils.dump_cros_audio_logs(
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self.host, self.facade, self.resultsdir, 'after_binding')
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# Selects and checks the node selected by cras is correct.
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audio_test_utils.check_and_set_chrome_active_node_types(
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self.facade,
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audio_test_utils.get_headphone_node(self.host), None)
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logging.info('Setting playback data on Cros device')
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source.set_playback_data(golden_file)
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# Starts playing, waits for some time, and then starts recording.
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# This is to avoid artifact caused by codec initialization.
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logging.info('Start playing %s on Cros device', golden_file.path)
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source.start_playback()
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time.sleep(self.DELAY_BEFORE_RECORD_SECONDS)
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logging.info('Start recording from Chameleon.')
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recorder.start_recording()
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time.sleep(self.RECORD_SECONDS)
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if check_quality:
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# Add a silence while recording to detect audio
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# spikes after playback.
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time.sleep(self.SILENCE_WAIT)
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recorder.stop_recording()
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logging.info('Stopped recording from Chameleon.')
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audio_test_utils.dump_cros_audio_logs(
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self.host, self.facade, self.resultsdir, 'after_recording')
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recorder.read_recorded_binary()
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logging.info('Read recorded binary from Chameleon.')
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recorded_file = os.path.join(self.resultsdir, "recorded.raw")
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logging.info('Saving recorded data to %s', recorded_file)
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recorder.save_file(recorded_file)
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# Removes the beginning of recorded data. This is to avoid artifact
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# caused by Chameleon codec initialization in the beginning of
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# recording.
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recorder.remove_head(0.5)
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recorded_file = os.path.join(self.resultsdir, "recorded_clipped.raw")
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logging.info('Saving clipped data to %s', recorded_file)
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recorder.save_file(recorded_file)
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# Compares data by frequency. Headphone audio signal has gone through
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# analog processing. This suffers from codec artifacts and noise on the
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# path. Comparing data by frequency is more robust than comparing by
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# correlation, which is suitable for fully-digital audio path like USB
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# and HDMI.
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audio_test_utils.check_recorded_frequency(
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golden_file, recorder, check_artifacts=check_quality)
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