102 lines
3.9 KiB
Python
102 lines
3.9 KiB
Python
# Copyright 2015 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 internal speaker 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.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.server.cros.audio import audio_test
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class audio_AudioBasicInternalSpeaker(audio_test.AudioTest):
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"""Server side internal speaker audio test.
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This test talks to a Chameleon board and a Cros device to verify
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internal speaker 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 = 8
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def run_once(self):
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"""Runs Basic Audio Speaker test."""
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if not audio_test_utils.has_internal_speaker(self.host):
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return
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golden_file = audio_test_data.GenerateAudioTestData(
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path=os.path.join(self.bindir, 'fix_440_16_0.5.raw'),
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duration_secs=10,
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frequencies=[440, 440],
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volume_scale=0.5)
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source = self.widget_factory.create_widget(
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chameleon_audio_ids.CrosIds.SPEAKER)
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recorder = self.widget_factory.create_widget(
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chameleon_audio_ids.ChameleonIds.MIC)
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audio_test_utils.dump_cros_audio_logs(self.host, self.facade,
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self.resultsdir, 'start')
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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, 'INTERNAL_SPEAKER', None)
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self.facade.set_selected_output_volume(80)
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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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self.facade.check_audio_stream_at_selected_device()
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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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# Removes noise by a lowpass filter.
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recorder.lowpass_filter(1000)
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recorded_file = os.path.join(self.resultsdir, "recorded_filtered.raw")
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logging.info('Saving filtered data to %s', recorded_file)
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recorder.save_file(recorded_file)
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# Compares data by frequency. Audio signal recorded by microphone has
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# gone through analog processing and through the air.
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# This suffers from codec artifacts and noise on the path.
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# 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,
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recorder,
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second_peak_ratio=0.1,
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ignore_frequencies=[50, 60])
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