def run_once(self):
"""Entry point of this test."""
# Sine wav file lasts 5 seconds
wav_path = os.path.join(self.bindir, '5SEC.wav')
data_format = dict(file_type='wav',
sample_format='S16_LE',
channel=2,
rate=48000)
wav_file = audio_test_data.GenerateAudioTestData(
path=wav_path,
data_format=data_format,
duration_secs=5,
frequencies=[440, 440],
volume_scale=0.9)
recorded_file = os.path.join(self.resultsdir, 'hw_recorded.wav')
# Get selected input and output devices.
cras_input = cras_utils.get_selected_input_device_name()
cras_output = cras_utils.get_selected_output_device_name()
logging.debug("Selected input=%s, output=%s", cras_input, cras_output)
if cras_input is None:
raise error.TestFail("Fail to get selected input device.")
if cras_output is None:
raise error.TestFail("Fail to get selected output device.")
alsa_input = alsa_utils.convert_device_name(cras_input)
alsa_output = alsa_utils.convert_device_name(cras_output)
(output_type, input_type) = cras_utils.get_selected_node_types()
if not any(t in input_type for t in ['MIC', 'USB']):
raise error.TestFail("Wrong input type=%s", input_type)
if not any(t in output_type for t in ['HEADPHONE', 'USB']):
raise error.TestFail("Wrong output type=%s", output_type)
# Stop CRAS to make sure the audio device won't be occupied.
utils.stop_service('cras', ignore_status=True)
p = cmd_utils.popen(
alsa_utils.playback_cmd(wav_file.path, device=alsa_output))
try:
# Wait one second to make sure the playback has been started.
time.sleep(1)
alsa_utils.record(recorded_file,
duration=TEST_DURATION,
device=alsa_input)
# Make sure the audio is still playing.
if p.poll() != None:
raise error.TestError('playback stopped')
finally:
cmd_utils.kill_or_log_returncode(p)
wav_file.delete()
# Restart CRAS.
utils.start_service('cras', ignore_status=True)
rms_value = audio_helper.get_rms(recorded_file)[0]
self.write_perf_keyval({'rms_value': rms_value})
def get_selected_node_types(self):
"""Gets the selected output and input node types.
@returns: A tuple (output_node_types, input_node_types) where each
field is a list of selected node types defined in
cras_utils.CRAS_NODE_TYPES.
"""
return cras_utils.get_selected_node_types()