1 files changed, 155 insertions, 0 deletions
diff --git a/src/com/android/media/tests/AudioJitterTest.java b/src/com/android/media/tests/AudioJitterTest.java
new file mode 100644
index 0000000..7058cc7
--- /dev/null
+++ b/src/com/android/media/tests/AudioJitterTest.java
@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.media.tests;
+
+import com.android.ddmlib.CollectingOutputReceiver;
+import com.android.ddmlib.testrunner.TestIdentifier;
+import com.android.tradefed.device.DeviceNotAvailableException;
+import com.android.tradefed.device.ITestDevice;
+import com.android.tradefed.log.LogUtil.CLog;
+import com.android.tradefed.result.ITestInvocationListener;
+import com.android.tradefed.testtype.IDeviceTest;
+import com.android.tradefed.testtype.IRemoteTest;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * A harness that launches AudioJitter tool and reports result.
+ */
+public class AudioJitterTest implements IDeviceTest, IRemoteTest {
+
+    private static final String RUN_KEY = "audiojitter";
+    private static final long TIMEOUT_MS = 5 * 60 * 1000; // 5 min
+    private static final int MAX_ATTEMPTS = 3;
+    private static final Map<String, String> METRICS_KEY_MAP = createMetricsKeyMap();
+
+    private ITestDevice mDevice;
+
+    private static final String DEVICE_TEMPORARY_DIR_PATH = "/data/local/tmp/";
+    private static final String JITTER_BINARY_FILENAME = "sljitter";
+    private static final String JITTER_BINARY_DEVICE_PATH =
+            DEVICE_TEMPORARY_DIR_PATH + JITTER_BINARY_FILENAME;
+
+    private static Map<String, String> createMetricsKeyMap() {
+        Map<String, String> result = new HashMap<String, String>();
+        result.put("min_jitter_ticks", "min_jitter_ticks");
+        result.put("min_jitter_ms", "min_jitter_ms");
+        result.put("min_jitter_period_id", "min_jitter_period_id");
+        result.put("max_jitter_ticks", "max_jitter_ticks");
+        result.put("max_jitter_ms", "max_jitter_ms");
+        result.put("max_jitter_period_id", "max_jitter_period_id");
+        result.put("mark_jitter_ticks", "mark_jitter_ticks");
+        result.put("mark_jitter_ms", "mark_jitter_ms");
+        result.put("max_cb_done_delay_ms", "max_cb_done_delay_ms");
+        result.put("max_thread_delay_ms", "max_thread_delay_ms");
+        result.put("max_render_delay_ms", "max_render_delay_ms");
+        result.put("drift_rate", "drift_rate");
+        result.put("error_ms", "error_ms");
+        result.put("min_error_ms", "min_error_ms");
+        result.put("max_error_ms", "max_error_ms");
+        return Collections.unmodifiableMap(result);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setDevice(ITestDevice device) {
+        mDevice = device;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public ITestDevice getDevice() {
+        return mDevice;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void run(ITestInvocationListener listener) throws DeviceNotAvailableException {
+        TestIdentifier testId = new TestIdentifier(getClass().getCanonicalName(), RUN_KEY);
+        ITestDevice device = getDevice();
+
+        listener.testRunStarted(RUN_KEY, 0);
+        listener.testStarted(testId);
+
+        long testStartTime = System.currentTimeMillis();
+        Map<String, String> metrics = new HashMap<String, String>();
+        String errMsg = null;
+
+        // start jitter and wait for process to complete
+        CollectingOutputReceiver receiver = new CollectingOutputReceiver();
+        device.executeShellCommand(JITTER_BINARY_DEVICE_PATH, receiver,
+                TIMEOUT_MS, TimeUnit.MILLISECONDS, MAX_ATTEMPTS);
+        String resultStr = receiver.getOutput();
+
+        if (resultStr != null) {
+            // parse result
+            CLog.i("== Jitter result ==");
+            Map<String, String> jitterResult = parseResult(resultStr);
+            if (jitterResult == null) {
+                errMsg = "Failed to parse Jitter result.";
+            } else {
+                metrics = jitterResult;
+            }
+        } else {
+            errMsg = "Jitter result not found.";
+        }
+
+        if (errMsg != null) {
+            CLog.e(errMsg);
+            listener.testFailed(testId, errMsg);
+            listener.testEnded(testId, metrics);
+            listener.testRunFailed(errMsg);
+        } else {
+            long durationMs = System.currentTimeMillis() - testStartTime;
+            listener.testEnded(testId, metrics);
+            listener.testRunEnded(durationMs, metrics);
+        }
+    }
+
+    /**
+     * Parse Jitter result.
+     *
+     * @param result Jitter result output
+     * @return a {@link HashMap} that contains metrics keys and results
+     */
+    private Map<String, String> parseResult(String result) {
+        Map<String, String> resultMap = new HashMap<String, String>();
+        String lines[] = result.split("\\r?\\n");
+        for (String line: lines) {
+            line = line.trim().replaceAll(" +", " ");
+            String[] tokens = line.split(" ");
+            if (tokens.length >= 2) {
+                String metricName = tokens[0];
+                String metricValue = tokens[1];
+                if (METRICS_KEY_MAP.containsKey(metricName)) {
+                    CLog.i(String.format("%s: %s", metricName, metricValue));
+                    resultMap.put(METRICS_KEY_MAP.get(metricName), metricValue);
+                }
+            }
+        }
+        return resultMap;
+    }
+}