Qi | a2d7774 | 2019-08-21 09:25:28 -0700 | [diff] [blame] | 1 | #!/usr/bin/env python3 |
| 2 | # |
| 3 | # Copyright (C) 2019 The Android Open Source Project |
| 4 | # |
| 5 | # Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| 6 | # use this file except in compliance with the License. You may obtain a copy of |
| 7 | # the License at |
| 8 | # |
| 9 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | # |
| 11 | # Unless required by applicable law or agreed to in writing, software |
| 12 | # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 13 | # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 14 | # License for the specific language governing permissions and limitations under |
| 15 | # the License. |
| 16 | """Stream music through connected device from phone across different |
| 17 | attenuations.""" |
| 18 | |
| 19 | import random |
| 20 | import time |
| 21 | from acts.signals import TestFailure |
Xianyuan Jia | 63751fb | 2020-11-17 00:07:40 +0000 | [diff] [blame^] | 22 | from acts_contrib.test_utils.bt.BtInterferenceBaseTest import BtInterferenceBaseTest |
| 23 | from acts_contrib.test_utils.bt.BtInterferenceBaseTest import get_iperf_results |
| 24 | from acts_contrib.test_utils.power.PowerBTBaseTest import ramp_attenuation |
Qi | a2d7774 | 2019-08-21 09:25:28 -0700 | [diff] [blame] | 25 | from multiprocessing import Process, Queue |
| 26 | |
| 27 | DEFAULT_THDN_THRESHOLD = 0.9 |
| 28 | MAX_ATTENUATION = 95 |
| 29 | TIME_OVERHEAD = 2 |
| 30 | |
| 31 | |
| 32 | class BtInterferenceDynamicTest(BtInterferenceBaseTest): |
| 33 | def __init__(self, configs): |
| 34 | super().__init__(configs) |
| 35 | self.iperf_duration = self.audio_params['duration'] + TIME_OVERHEAD |
| 36 | self.wait_for_interference = self.dynamic_wifi_interference[ |
| 37 | 'waittime_to_inject_interference'] |
| 38 | self.channel_change_interval = self.dynamic_wifi_interference[ |
| 39 | 'channel_change_interval_second'] |
| 40 | self.interference_channels = self.dynamic_wifi_interference[ |
| 41 | 'two_hoppable_channels'] + self.dynamic_wifi_interference[ |
| 42 | 'one_hoppable_channel'] |
| 43 | |
| 44 | self.bt_signal_levels = list( |
| 45 | self.dynamic_wifi_interference['bt_signal_level'].keys()) |
| 46 | self.wifi_int_levels = list( |
| 47 | self.dynamic_wifi_interference['interference_level'].keys()) |
| 48 | self.bt_atten_levels = list( |
| 49 | self.dynamic_wifi_interference['bt_signal_level'].values()) |
| 50 | self.wifi_atten_levels = list( |
| 51 | self.dynamic_wifi_interference['interference_level'].values()) |
| 52 | for bt_level in self.bt_signal_levels: |
| 53 | bt_atten_level = self.dynamic_wifi_interference['bt_signal_level'][ |
| 54 | bt_level] |
| 55 | for wifi_level in self.wifi_int_levels: |
| 56 | interference_atten_level = self.dynamic_wifi_interference[ |
| 57 | 'interference_level'][wifi_level] |
| 58 | self.generate_test_case_randomchange( |
| 59 | bt_atten_level, interference_atten_level, |
| 60 | self.channel_change_interval) |
| 61 | for channels in self.interference_channels: |
| 62 | self.generate_test_case(bt_atten_level, |
| 63 | interference_atten_level, channels) |
| 64 | |
| 65 | def generate_test_case(self, bt_atten_level, interference_atten_level, |
| 66 | dynamic_channels): |
| 67 | """Function to generate test cases with different parameters. |
| 68 | Args: |
| 69 | bt_atten_level: bt path attenuation level |
| 70 | interference_atten_level: wifi interference path attenuation level |
| 71 | channels: wifi interference channel or channel combination |
| 72 | """ |
| 73 | def test_case_fn(): |
| 74 | self.bt_afh_with_dynamic_interference(bt_atten_level, |
| 75 | interference_atten_level, |
| 76 | dynamic_channels) |
| 77 | |
| 78 | bt_signal_level = self.bt_signal_levels[self.bt_atten_levels.index( |
| 79 | bt_atten_level)] |
| 80 | wifi_int_level = self.wifi_int_levels[self.wifi_atten_levels.index( |
| 81 | interference_atten_level)] |
| 82 | interference_chans_before = dynamic_channels[0] |
| 83 | interference_chans_after = dynamic_channels[1] |
| 84 | chans_before_str = 'channel_' |
| 85 | chans_after_str = 'channel_' |
| 86 | if 0 in interference_chans_before: |
| 87 | chans_before_str = 'no_interference' |
| 88 | else: |
| 89 | for i in interference_chans_before: |
| 90 | chans_before_str = chans_before_str + str(i) + '_' |
| 91 | for i in interference_chans_after: |
| 92 | chans_after_str = chans_after_str + str(i) + '_' |
| 93 | test_case_name = ('test_bt_afh_from_{}to_{}bt_signal_level_{}_' |
| 94 | 'interference_level_{}'.format( |
| 95 | chans_before_str, chans_after_str, |
| 96 | bt_signal_level, wifi_int_level)) |
| 97 | setattr(self, test_case_name, test_case_fn) |
| 98 | |
| 99 | def generate_test_case_randomchange(self, bt_atten_level, |
| 100 | interference_atten_level, interval): |
| 101 | def test_case_fn(): |
| 102 | self.bt_afh_with_fast_changing_interference( |
| 103 | bt_atten_level, interference_atten_level, interval) |
| 104 | |
| 105 | bt_signal_level = self.bt_signal_levels[self.bt_atten_levels.index( |
| 106 | bt_atten_level)] |
| 107 | wifi_int_level = self.wifi_atten_levels[self.wifi_atten_levels.index( |
| 108 | interference_atten_level)] |
| 109 | test_case_name = ('test_bt_afh_with_random_channel_interference_bt' |
| 110 | '_signal_level_{}_interference_level_{}'.format( |
| 111 | bt_signal_level, wifi_int_level)) |
| 112 | setattr(self, test_case_name, test_case_fn) |
| 113 | |
| 114 | def interference_rssi_mapping_from_attenuation(self, interference_level): |
| 115 | """Function to get wifi rssi-to-interference level mapping |
| 116 | Args: |
| 117 | interference_level: interference level in terms of attenuation |
| 118 | """ |
| 119 | self.log.info('Get WiFi RSSI at the desired attenuation level') |
| 120 | for obj in self.wifi_int_pairs: |
| 121 | obj.attenuator.set_atten(interference_level) |
| 122 | self.get_interference_rssi() |
| 123 | |
| 124 | def get_rssi_at_channel(self, channel): |
| 125 | """Function to get wifi rssi-to-interference level at each channel |
| 126 | Args: |
| 127 | channel: the channel to query the rssi |
| 128 | Returns: |
| 129 | rssi: wifi rssi at the queried channel |
| 130 | """ |
| 131 | for item in self.interference_rssi: |
| 132 | if item['chan'] == channel: |
| 133 | rssi = item['rssi'] |
| 134 | return rssi |
| 135 | |
| 136 | def inject_dynamic_wifi_interference(self, interference_level, |
| 137 | interference_channels, time_wait): |
| 138 | """Function to inject dynamic wifi interference to bt link. |
| 139 | Args: |
| 140 | interference_level: signal strength of interference, represented |
| 141 | by attenuation level |
| 142 | interference_channels: interference channel for before and after, |
| 143 | e.g. [chans_before, chans_after] |
| 144 | time_wait: time wait to inject new interference |
| 145 | """ |
| 146 | all_pair = range(len(self.wifi_int_pairs)) |
| 147 | #List of channels before and after changing the interference |
| 148 | interference_chans_before = interference_channels[0] |
| 149 | interference_chans_after = interference_channels[1] |
| 150 | #Set existing wifi interference attenuation level |
| 151 | if 0 not in interference_chans_before: |
| 152 | interference_pair_indices_before = self.locate_interference_pair_by_channel( |
| 153 | interference_chans_before) |
| 154 | inactive_interference_pair_indices_before = [ |
| 155 | item for item in all_pair |
| 156 | if item not in interference_pair_indices_before |
| 157 | ] |
| 158 | self.log.info( |
| 159 | 'Set pre-existing interference before A2DP streaming') |
| 160 | for i in interference_pair_indices_before: |
| 161 | self.log.info( |
| 162 | 'Set {} dB on attenuator {}, wifi rssi {} dBm at chan {}'. |
| 163 | format( |
| 164 | interference_level, i + 1, |
| 165 | self.get_rssi_at_channel( |
| 166 | self.wifi_int_pairs[i].channel), |
| 167 | self.wifi_int_pairs[i].channel)) |
| 168 | self.wifi_int_pairs[i].attenuator.set_atten(interference_level) |
| 169 | for i in inactive_interference_pair_indices_before: |
| 170 | self.log.info('Set attenuation {} dB on attenuator {}'.format( |
| 171 | MAX_ATTENUATION, i + 1)) |
| 172 | self.wifi_int_pairs[i].attenuator.set_atten(MAX_ATTENUATION) |
| 173 | ##Debug_purpose |
| 174 | for i in self.attenuators: |
| 175 | self.log.info(i.get_atten()) |
| 176 | |
| 177 | #Set after change wifi interference attenuation level |
| 178 | interference_pair_indices_after = self.locate_interference_pair_by_channel( |
| 179 | interference_chans_after) |
| 180 | inactive_interference_pair_indices_after = [ |
| 181 | item for item in all_pair |
| 182 | if item not in interference_pair_indices_after |
| 183 | ] |
| 184 | #Wait for time_wait second to inject new interference |
| 185 | time.sleep(time_wait) |
| 186 | self.log.info('Inject new interference during A2DP streaming') |
| 187 | for i in interference_pair_indices_after: |
| 188 | self.log.info( |
| 189 | 'Set {} dB on attenuator {}, with wifi rssi {} dBm at chan {}'. |
| 190 | format( |
| 191 | interference_level, i + 1, |
| 192 | self.get_rssi_at_channel(self.wifi_int_pairs[i].channel), |
| 193 | self.wifi_int_pairs[i].channel)) |
| 194 | self.wifi_int_pairs[i].attenuator.set_atten(interference_level) |
| 195 | for i in inactive_interference_pair_indices_after: |
| 196 | self.log.info('Set attenuation {} dB on attenuator {}'.format( |
| 197 | MAX_ATTENUATION, i + 1)) |
| 198 | self.wifi_int_pairs[i].attenuator.set_atten(MAX_ATTENUATION) |
| 199 | ##Debug_purpose |
| 200 | for i in self.attenuators: |
| 201 | self.log.info('Attenuator {} set to {} dB'.format( |
| 202 | self.attenuators.index(i) + 1, i.get_atten())) |
| 203 | self.log.info('Dymanic inteference injected') |
| 204 | |
| 205 | def inject_fast_changing_wifi_interference(self, interference_level, |
| 206 | interval): |
| 207 | """Function to inject changing wifi interference one channel a time. |
| 208 | Args: |
| 209 | interference_level: signal strength of interference, represented |
| 210 | by attenuation level |
| 211 | interval: interval between channel changes |
| 212 | """ |
| 213 | all_pair = range(len(self.wifi_int_pairs)) |
| 214 | #Set initial WiFi interference at channel 1 |
| 215 | self.log.info('Start with interference at channel 1') |
| 216 | self.wifi_int_pairs[0].attenuator.set_atten(interference_level) |
| 217 | self.wifi_int_pairs[1].attenuator.set_atten(MAX_ATTENUATION) |
| 218 | self.wifi_int_pairs[2].attenuator.set_atten(MAX_ATTENUATION) |
| 219 | current_int_pair = [0] |
| 220 | inactive_int_pairs = [ |
| 221 | item for item in all_pair if item not in current_int_pair |
| 222 | ] |
| 223 | time.sleep(interval) |
| 224 | #Inject randomlized channel wifi interference |
| 225 | self.log.info( |
| 226 | 'Inject random changing channel (1,6,11) wifi interference' |
| 227 | 'every {} second'.format(interval)) |
| 228 | while True: |
| 229 | current_int_pair = [ |
| 230 | random.randint(inactive_int_pairs[0], inactive_int_pairs[1]) |
| 231 | ] |
| 232 | inactive_int_pairs = [ |
| 233 | item for item in all_pair if item not in current_int_pair |
| 234 | ] |
| 235 | self.wifi_int_pairs[current_int_pair[0]].attenuator.set_atten( |
| 236 | interference_level) |
| 237 | self.log.info( |
| 238 | 'Current interference {} at channel {} with rssi {} dBm'. |
| 239 | format( |
| 240 | interference_level, |
| 241 | self.wifi_int_pairs[current_int_pair[0]].channel, |
| 242 | self.get_rssi_at_channel( |
| 243 | self.wifi_int_pairs[current_int_pair[0]].channel))) |
| 244 | for i in inactive_int_pairs: |
| 245 | self.wifi_int_pairs[i].attenuator.set_atten(MAX_ATTENUATION) |
| 246 | ##Debug_purpose |
| 247 | for i in self.attenuators: |
| 248 | self.log.info('Attenuator {} set to {} dB'.format( |
| 249 | self.attenuators.index(i) + 1, i.get_atten())) |
| 250 | time.sleep(interval) |
| 251 | |
| 252 | def bt_afh_with_dynamic_interference(self, bt_atten_level, |
| 253 | interference_atten_level, |
| 254 | dynamic_channels): |
| 255 | """Run a2dp audio quality with dynamic interference added. |
| 256 | Args: |
| 257 | bt_atten_level: signal level of bt in terms of attenuation |
| 258 | interference_atten_level: interference level in terms of attenuation |
| 259 | dynamic_channels: interference channels before and after |
| 260 | """ |
| 261 | ramp_attenuation(self.attenuator, bt_atten_level) |
| 262 | self.interference_rssi_mapping_from_attenuation( |
| 263 | interference_atten_level) |
| 264 | [rssi_master, pwl_master, rssi_slave] = self._get_bt_link_metrics() |
| 265 | tag_bt = 'bt_signal_level_{}_rssi_{}_dBm'.format( |
| 266 | bt_atten_level, rssi_master) |
| 267 | procs_iperf = [] |
| 268 | for obj in self.wifi_int_pairs: |
| 269 | obj.iperf_server.start() |
| 270 | iperf_args = '-i 1 -t {} -p {} -J -R'.format( |
| 271 | self.iperf_duration, obj.iperf_server.port) |
| 272 | tag = 'chan_{}'.format(obj.channel) |
| 273 | proc_iperf = Process(target=obj.iperf_client.start, |
| 274 | args=(obj.server_address, iperf_args, tag)) |
| 275 | proc_iperf.start() |
| 276 | procs_iperf.append(proc_iperf) |
| 277 | self.log.info('Start IPERF on all three channels') |
| 278 | queue = Queue() |
| 279 | proc_bt_audio = Process(target=self.play_and_record_audio, |
| 280 | args=(self.audio_params['duration'], queue)) |
| 281 | proc_interference = Process( |
| 282 | target=self.inject_dynamic_wifi_interference, |
| 283 | args=(interference_atten_level, dynamic_channels, |
| 284 | self.wait_for_interference)) |
| 285 | proc_bt_audio.start() |
| 286 | proc_interference.start() |
| 287 | proc_bt_audio.join() |
| 288 | proc_interference.join() |
| 289 | for proc in procs_iperf: |
| 290 | proc.join() |
| 291 | for obj in self.wifi_int_pairs: |
| 292 | iperf_throughput = get_iperf_results(obj.iperf_server) |
| 293 | self.log.info( |
| 294 | 'Throughput for channel {} interference is {} Mbps'.format( |
| 295 | obj.channel, iperf_throughput)) |
| 296 | obj.iperf_server.stop() |
| 297 | audio_captured = queue.get() |
| 298 | thdns = self.run_thdn_analysis(audio_captured, tag_bt) |
| 299 | self.log.info('THDN results are {}'.format(thdns)) |
| 300 | for thdn in thdns: |
| 301 | if thdn >= self.audio_params['thdn_threshold']: |
| 302 | raise TestFailure('AFH failed') |
| 303 | |
| 304 | def bt_afh_with_fast_changing_interference(self, bt_atten_level, |
| 305 | interference_atten_level, |
| 306 | interval): |
| 307 | """Run a2dp audio quality with random channel fast changing interference |
| 308 | Args: |
| 309 | bt_signale_level: signal level of bt in terms of attenuation |
| 310 | interference_level: interference level in terms of attenuation |
| 311 | interval: interval between channel changes |
| 312 | """ |
| 313 | ramp_attenuation(self.attenuator, bt_atten_level) |
| 314 | self.interference_rssi_mapping_from_attenuation( |
| 315 | interference_atten_level) |
| 316 | [rssi_master, pwl_master, rssi_slave] = self._get_bt_link_metrics() |
| 317 | tag_bt = 'bt_signal_level_{}_rssi_{}_dBm'.format( |
| 318 | bt_atten_level, rssi_master) |
| 319 | procs_iperf = [] |
| 320 | #Start IPERF on all three interference pairs |
| 321 | for obj in self.wifi_int_pairs: |
| 322 | obj.iperf_server.start() |
| 323 | iperf_args = '-i 1 -t {} -p {} -J -R'.format( |
| 324 | self.iperf_duration, obj.iperf_server.port) |
| 325 | tag = 'chan_{}'.format(obj.channel) |
| 326 | proc_iperf = Process(target=obj.iperf_client.start, |
| 327 | args=(obj.server_address, iperf_args, tag)) |
| 328 | proc_iperf.start() |
| 329 | procs_iperf.append(proc_iperf) |
| 330 | self.log.info('Start IPERF on all three channels') |
| 331 | queue = Queue() |
| 332 | proc_bt_audio = Process(target=self.play_and_record_audio, |
| 333 | args=(self.audio_params['duration'], queue)) |
| 334 | proc_interference = Process( |
| 335 | target=self.inject_fast_changing_wifi_interference, |
| 336 | args=(interference_atten_level, interval)) |
| 337 | proc_bt_audio.start() |
| 338 | proc_interference.start() |
| 339 | proc_bt_audio.join() |
| 340 | while proc_bt_audio.is_alive(): |
| 341 | continue |
| 342 | proc_interference.terminate() |
| 343 | proc_interference.join() |
| 344 | for proc in procs_iperf: |
| 345 | proc.join() |
| 346 | for obj in self.wifi_int_pairs: |
| 347 | iperf_throughput = get_iperf_results(obj.iperf_server) |
| 348 | self.log.info( |
| 349 | 'Throughput for channel {} interference is {} Mbps'.format( |
| 350 | obj.channel, iperf_throughput)) |
| 351 | obj.iperf_server.stop() |
| 352 | audio_captured = queue.get() |
| 353 | thdns = self.run_thdn_analysis(audio_captured, tag_bt) |
| 354 | self.log.info('THDN results are {}'.format(thdns)) |
| 355 | for thdn in thdns: |
| 356 | if thdn >= self.audio_params['thdn_threshold']: |
| 357 | raise TestFailure('AFH failed') |