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      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.log.LogUtil.CLog;
     22 import com.android.tradefed.result.ITestInvocationListener;
     23 import com.android.tradefed.result.TestDescription;
     24 
     25 import java.util.HashMap;
     26 import java.util.Map;
     27 import java.util.regex.Matcher;
     28 import java.util.regex.Pattern;
     29 
     30 /**
     31  * Camera shot latency test
     32  *
     33  * Runs Camera device performance test to measure time from taking a shot to saving a file on disk
     34  * and time from shutter to shutter in fully saturated case.
     35  */
     36 @OptionClass(alias = "camera-shot-latency")
     37 public class CameraShotLatencyTest extends CameraTestBase {
     38 
     39     private static final Pattern STATS_REGEX = Pattern.compile(
     40         "^(?<average>[0-9.]+)\\|(?<values>[0-9 .-]+)");
     41 
     42     public CameraShotLatencyTest() {
     43         setTestPackage("com.google.android.camera");
     44         setTestClass("com.android.camera.latency.CameraShotLatencyTest");
     45         setTestRunner("android.test.InstrumentationTestRunner");
     46         setRuKey("CameraShotLatency");
     47         setTestTimeoutMs(60 * 60 * 1000);   // 1 hour
     48     }
     49 
     50     /**
     51      * {@inheritDoc}
     52      */
     53     @Override
     54     public void run(ITestInvocationListener listener) throws DeviceNotAvailableException {
     55         runInstrumentationTest(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 DefaultCollectingListener {
     62 
     63         public CollectingListener(ITestInvocationListener listener) {
     64             super(listener);
     65         }
     66 
     67         @Override
     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 
     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