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# 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 external microphone test using the Chameleon board."""
import logging
import os
import time
from autotest_lib.client.common_lib import error
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_ids
from autotest_lib.client.cros.chameleon import chameleon_audio_helper
from autotest_lib.server.cros.audio import audio_test
class audio_AudioBasicExternalMicrophone(audio_test.AudioTest):
"""Server side external microphone audio test.
This test talks to a Chameleon board and a Cros device to verify
external 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, check_quality=False):
"""Running basic headphone audio tests.
@param check_quality: flag to check audio quality.
"""
if not audio_test_utils.has_audio_jack(self.host):
raise error.TestNAError(
'No audio jack for the DUT.'
'Please check label of the host and control file.'
'Please check the host label and test dependency.')
golden_file = audio_test_data.GenerateAudioTestData(
path=os.path.join(self.bindir, 'fix_1330_16.raw'),
duration_secs=10,
frequencies=[1330, 1330],
volume_scale=0.1)
source = self.widget_factory.create_widget(
chameleon_audio_ids.ChameleonIds.LINEOUT)
recorder = self.widget_factory.create_widget(
chameleon_audio_ids.CrosIds.EXTERNAL_MIC)
binder = self.widget_factory.create_binder(source, recorder)
with chameleon_audio_helper.bind_widgets(binder):
# Checks the node selected by cras is correct.
time.sleep(self.DELAY_AFTER_BINDING)
audio_test_utils.dump_cros_audio_logs(
self.host, self.facade, self.resultsdir, 'after_binding')
# Selects and checks the node selected by cras is correct.
audio_test_utils.check_and_set_chrome_active_node_types(
self.facade, None, 'MIC')
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(
self.host, self.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(4.5)
recorded_file = os.path.join(self.resultsdir, "recorded_clipped.raw")
logging.info('Saving clipped data to %s', recorded_file)
recorder.save_file(recorded_file)
# Compares data by frequency. Audio signal from Chameleon Line-Out to
# Cros device external microphone has gone through analog processing.
# 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,
check_artifacts=check_quality,
ignore_frequencies=[50, 60])
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