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      1 /*
      2  * Copyright (C) 2014 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.ddmlib.CollectingOutputReceiver;
     20 import com.android.ddmlib.testrunner.TestIdentifier;
     21 import com.android.tradefed.device.DeviceNotAvailableException;
     22 import com.android.tradefed.device.ITestDevice;
     23 import com.android.tradefed.log.LogUtil.CLog;
     24 import com.android.tradefed.result.ITestInvocationListener;
     25 import com.android.tradefed.testtype.IDeviceTest;
     26 import com.android.tradefed.testtype.IRemoteTest;
     27 
     28 import java.util.Collections;
     29 import java.util.HashMap;
     30 import java.util.Map;
     31 import java.util.concurrent.TimeUnit;
     32 
     33 /**
     34  * A harness that launches AudioJitter tool and reports result.
     35  */
     36 public class AudioJitterTest implements IDeviceTest, IRemoteTest {
     37 
     38     private static final String RUN_KEY = "audiojitter";
     39     private static final long TIMEOUT_MS = 5 * 60 * 1000; // 5 min
     40     private static final int MAX_ATTEMPTS = 3;
     41     private static final Map<String, String> METRICS_KEY_MAP = createMetricsKeyMap();
     42 
     43     private ITestDevice mDevice;
     44 
     45     private static final String DEVICE_TEMPORARY_DIR_PATH = "/data/local/tmp/";
     46     private static final String JITTER_BINARY_FILENAME = "sljitter";
     47     private static final String JITTER_BINARY_DEVICE_PATH =
     48             DEVICE_TEMPORARY_DIR_PATH + JITTER_BINARY_FILENAME;
     49 
     50     private static Map<String, String> createMetricsKeyMap() {
     51         Map<String, String> result = new HashMap<String, String>();
     52         result.put("min_jitter_ticks", "min_jitter_ticks");
     53         result.put("min_jitter_ms", "min_jitter_ms");
     54         result.put("min_jitter_period_id", "min_jitter_period_id");
     55         result.put("max_jitter_ticks", "max_jitter_ticks");
     56         result.put("max_jitter_ms", "max_jitter_ms");
     57         result.put("max_jitter_period_id", "max_jitter_period_id");
     58         result.put("mark_jitter_ticks", "mark_jitter_ticks");
     59         result.put("mark_jitter_ms", "mark_jitter_ms");
     60         result.put("max_cb_done_delay_ms", "max_cb_done_delay_ms");
     61         result.put("max_thread_delay_ms", "max_thread_delay_ms");
     62         result.put("max_render_delay_ms", "max_render_delay_ms");
     63         result.put("drift_rate", "drift_rate");
     64         result.put("error_ms", "error_ms");
     65         result.put("min_error_ms", "min_error_ms");
     66         result.put("max_error_ms", "max_error_ms");
     67         return Collections.unmodifiableMap(result);
     68     }
     69 
     70     /**
     71      * {@inheritDoc}
     72      */
     73     @Override
     74     public void setDevice(ITestDevice device) {
     75         mDevice = device;
     76     }
     77 
     78     /**
     79      * {@inheritDoc}
     80      */
     81     @Override
     82     public ITestDevice getDevice() {
     83         return mDevice;
     84     }
     85 
     86     /**
     87      * {@inheritDoc}
     88      */
     89     @Override
     90     public void run(ITestInvocationListener listener) throws DeviceNotAvailableException {
     91         TestIdentifier testId = new TestIdentifier(getClass().getCanonicalName(), RUN_KEY);
     92         ITestDevice device = getDevice();
     93 
     94         listener.testRunStarted(RUN_KEY, 0);
     95         listener.testStarted(testId);
     96 
     97         long testStartTime = System.currentTimeMillis();
     98         Map<String, String> metrics = new HashMap<String, String>();
     99         String errMsg = null;
    100 
    101         // start jitter and wait for process to complete
    102         CollectingOutputReceiver receiver = new CollectingOutputReceiver();
    103         device.executeShellCommand(JITTER_BINARY_DEVICE_PATH, receiver,
    104                 TIMEOUT_MS, TimeUnit.MILLISECONDS, MAX_ATTEMPTS);
    105         String resultStr = receiver.getOutput();
    106 
    107         if (resultStr != null) {
    108             // parse result
    109             CLog.i("== Jitter result ==");
    110             Map<String, String> jitterResult = parseResult(resultStr);
    111             if (jitterResult == null) {
    112                 errMsg = "Failed to parse Jitter result.";
    113             } else {
    114                 metrics = jitterResult;
    115             }
    116         } else {
    117             errMsg = "Jitter result not found.";
    118         }
    119 
    120         if (errMsg != null) {
    121             CLog.e(errMsg);
    122             listener.testFailed(testId, errMsg);
    123             listener.testEnded(testId, metrics);
    124             listener.testRunFailed(errMsg);
    125         } else {
    126             long durationMs = System.currentTimeMillis() - testStartTime;
    127             listener.testEnded(testId, metrics);
    128             listener.testRunEnded(durationMs, metrics);
    129         }
    130     }
    131 
    132     /**
    133      * Parse Jitter result.
    134      *
    135      * @param result Jitter result output
    136      * @return a {@link HashMap} that contains metrics keys and results
    137      */
    138     private Map<String, String> parseResult(String result) {
    139         Map<String, String> resultMap = new HashMap<String, String>();
    140         String lines[] = result.split("\\r?\\n");
    141         for (String line: lines) {
    142             line = line.trim().replaceAll(" +", " ");
    143             String[] tokens = line.split(" ");
    144             if (tokens.length >= 2) {
    145                 String metricName = tokens[0];
    146                 String metricValue = tokens[1];
    147                 if (METRICS_KEY_MAP.containsKey(metricName)) {
    148                     CLog.i(String.format("%s: %s", metricName, metricValue));
    149                     resultMap.put(METRICS_KEY_MAP.get(metricName), metricValue);
    150                 }
    151             }
    152         }
    153         return resultMap;
    154     }
    155 }
    156