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132 lines
5.1 KiB
132 lines
5.1 KiB
#!/usr/bin/env python
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#
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# Copyright (C) 2017 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import logging
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import math
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import os
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from time import sleep
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from vts.runners.host import asserts
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from vts.runners.host import base_test
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from vts.runners.host import const
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from vts.runners.host import test_runner
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from vts.utils.python.controllers import android_device
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class AudioLoopbackTest(base_test.BaseTestClass):
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"""A test module for the Audio Loopback Benchmark."""
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# Threshold for average latency and standard deviation.
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THRESHOLD = {"MAX_LATENCY": 20000000, }
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TEST_DATA_DIR = "audiotest"
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FULL_DATA_DIR_PATH = os.path.join("/mnt/sdcard/", TEST_DATA_DIR)
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TEST_FILE_PREFIX = "out"
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TEST_FILE_NAME = os.path.join(FULL_DATA_DIR_PATH,
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TEST_FILE_PREFIX + ".txt")
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ITERATION = 100
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def setUpClass(self):
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self.dut = self.android_devices[0]
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self.dut.adb.shell("mkdir -p %s" % self.FULL_DATA_DIR_PATH)
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# install Loopback.apk
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self.dut.adb.shell("pm install -r -g /data/local/tmp/Loopback.apk")
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def tearDown(self):
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self.dut.adb.shell("rm -rf %s" % self.FULL_DATA_DIR_PATH)
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def ProcessTestResults(self, latencies, confidences):
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"""Process test results and upload to web dashboard.
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Calculate the average and standard deviation of latencies from all test run.
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Only test results with confidence = 1.0 are counted.
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Args:
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latencies: List of latency (in ns) get from each run. e.g.[8040000]
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confidences: List of confidence get from each run. e.g. [0.98, 1.0]
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"""
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total_latency = 0
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total_run = 0
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for latency, confidence in zip(latencies, confidences):
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# filter test runs with confidence < 1.0
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if confidence < 1.0:
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latencies.remove(latency)
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else:
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total_latency += latency
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total_run += 1
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asserts.assertLess(0, total_run, "No valid runs.")
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self.web.AddProfilingDataUnlabeledVector(
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"AVG_LATENCY",
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latencies,
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x_axis_label="AVG Roundtrip latency (ns)",
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y_axis_label="Frequency")
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# calculate the average latency.
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avg_latency = total_latency / total_run
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logging.info("avg_latency: %s", avg_latency)
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asserts.assertLess(avg_latency, self.THRESHOLD["MAX_LATENCY"],
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"avg latency exceeds threshold")
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# calculate the standard deviation of latencies.
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sd = 0.0
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for latency in latencies:
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sd += (latency - avg_latency) * (latency - avg_latency)
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sd = int(math.sqrt(sd / total_run))
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logging.info("standard_deviation: %s", sd)
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self.web.AddProfilingDataUnlabeledVector(
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"STANDARD_DEVIATION", [sd],
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x_axis_label="Standard deviation",
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y_axis_label="Frequency")
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def testRun(self):
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"""Runs test in audio Loopback.apk and process the test results."""
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latencies = []
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confidences = []
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for i in range(0, self.ITERATION):
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self.dut.shell.Execute(
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["rm -f %s/*" % self.FULL_DATA_DIR_PATH])
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self.dut.shell.Execute([
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"am start -n org.drrickorang.loopback/.LoopbackActivity "
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"--es FileName %s/%s --ei AudioLevel 11 --ei TestType 222;" %
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(self.TEST_DATA_DIR, self.TEST_FILE_PREFIX)
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])
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# wait until the test finished.
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results = self.dut.shell.Execute(
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["ls %s" % self.TEST_FILE_NAME])
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while results[const.EXIT_CODE][0]:
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logging.info("Test is running...")
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sleep(1)
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results = self.dut.shell.Execute(
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["ls %s" % self.TEST_FILE_NAME])
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results = self.dut.shell.Execute(
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["cat %s" % self.TEST_FILE_NAME])
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asserts.assertFalse(results[const.EXIT_CODE][0],
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"Fail to get the test output")
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stdout_lines = results[const.STDOUT][0].split("\n")
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for line in stdout_lines:
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if line.startswith("LatencyMs"):
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latencies.append(
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int(
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float(line.replace("LatencyMs = ", "")) * 1000000))
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if line.startswith("LatencyConfidence"):
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confidences.append(
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float(line.replace("LatencyConfidence = ", "")))
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self.ProcessTestResults(latencies, confidences)
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if __name__ == "__main__":
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test_runner.main()
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