1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.media.tests;
18 
19 import com.android.tradefed.config.OptionClass;
20 import com.android.tradefed.device.DeviceNotAvailableException;
21 import com.android.tradefed.invoker.TestInformation;
22 import com.android.tradefed.log.LogUtil.CLog;
23 import com.android.tradefed.result.ITestInvocationListener;
24 import com.android.tradefed.result.TestDescription;
25 
26 import java.util.HashMap;
27 import java.util.Map;
28 import java.util.regex.Matcher;
29 import java.util.regex.Pattern;
30 
31 /**
32  * Camera shot latency test
33  *
34  * Runs Camera device performance test to measure time from taking a shot to saving a file on disk
35  * and time from shutter to shutter in fully saturated case.
36  */
37 @OptionClass(alias = "camera-shot-latency")
38 public class CameraShotLatencyTest extends CameraTestBase {
39 
40     private static final Pattern STATS_REGEX = Pattern.compile(
41         "^(?<average>[0-9.]+)\\|(?<values>[0-9 .-]+)");
42 
CameraShotLatencyTest()43     public CameraShotLatencyTest() {
44         setTestPackage("com.google.android.camera");
45         setTestClass("com.android.camera.latency.CameraShotLatencyTest");
46         setTestRunner("android.test.InstrumentationTestRunner");
47         setRuKey("CameraShotLatency");
48         setTestTimeoutMs(60 * 60 * 1000);   // 1 hour
49     }
50 
51     /** {@inheritDoc} */
52     @Override
run(TestInformation testInfo, ITestInvocationListener listener)53     public void run(TestInformation testInfo, ITestInvocationListener listener)
54             throws DeviceNotAvailableException {
55         runInstrumentationTest(testInfo, listener, new CollectingListener(listener));
56     }
57 
58     /**
59      * A listener to collect the output from test run and fatal errors
60      */
61     private class CollectingListener extends CameraTestMetricsCollectionListener.DefaultCollectingListener {
62 
CollectingListener(ITestInvocationListener listener)63         public CollectingListener(ITestInvocationListener listener) {
64             super(listener);
65         }
66 
67         @Override
handleMetricsOnTestEnded(TestDescription test, Map<String, String> testMetrics)68         public void handleMetricsOnTestEnded(TestDescription test, Map<String, String> testMetrics) {
69             // Test metrics accumulated will be posted at the end of test run.
70             getAggregatedMetrics().putAll(parseResults(test.getTestName(), testMetrics));
71         }
72 
parseResults(String testName, Map<String, String> testMetrics)73         public Map<String, String> parseResults(String testName, Map<String, String> testMetrics) {
74             // Parse shot latency stats from the instrumentation result.
75             // Format : <metric_key>=<average_of_latency>|<raw_data>
76             // Example:
77             // ElapsedTimeMs=1805|1725 1747 ... 2078
78             Map<String, String> parsed = new HashMap<String, String>();
79             for (Map.Entry<String, String> metric : testMetrics.entrySet()) {
80                 Matcher matcher = STATS_REGEX.matcher(metric.getValue());
81                 if (matcher.matches()) {
82                     // Key name consists of a pair of test name and metric name.
83                     String keyName = String.format("%s_%s", testName, metric.getKey());
84                     parsed.put(keyName, matcher.group("average"));
85                 } else {
86                     CLog.w(String.format("Stats not in correct format: %s", metric.getValue()));
87                 }
88             }
89             return parsed;
90         }
91     }
92 }
93