Diff: dcs-sdk-java-master/app/src/main/java/com/baidu/duer/dcs/devicemodule/audioplayer/report/AudioPlayerTimer.java

Revision:

45:2aa9f933c8d2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dcs-sdk-java-master/app/src/main/java/com/baidu/duer/dcs/devicemodule/audioplayer/report/AudioPlayerTimer.java	Tue Jul 18 16:34:48 2017 +0800
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2017 Baidu, Inc. All Rights Reserved.
+ * 
+ * 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.baidu.duer.dcs.devicemodule.audioplayer.report;
+
+import java.util.concurrent.TimeUnit;
+
+/**
+ * audio 播放统计OffsetInMilliseconds
+ * <p>
+ * Created by guxiuzhong@baidu.com on 2017/5/22.
+ */
+public class AudioPlayerTimer {
+    private long startNano;
+    private long elapsedTimeMs;
+    private long totalStreamLength;
+    private boolean isPlaying = false;
+
+    public synchronized void start() {
+        startNano = System.nanoTime();
+        isPlaying = true;
+    }
+
+    public synchronized void stop() {
+        if (isPlaying) {
+            elapsedTimeMs += getCurrentOffsetInMilliseconds();
+            isPlaying = false;
+        }
+    }
+
+    public synchronized long getOffsetInMilliseconds() {
+        long offset = elapsedTimeMs + (isPlaying ? getCurrentOffsetInMilliseconds() : 0);
+        if (totalStreamLength > 0) {
+            offset = Math.min(totalStreamLength, offset);
+        }
+        return offset;
+    }
+
+    public void reset() {
+        reset(0);
+    }
+
+    public void reset(long startPosition) {
+        reset(startPosition, -1);
+    }
+
+    public synchronized void reset(long startPosition, long maxPosition) {
+        elapsedTimeMs = startPosition;
+        isPlaying = false;
+        startNano = System.nanoTime();
+        totalStreamLength = maxPosition;
+    }
+
+    private long getCurrentOffsetInMilliseconds() {
+        return TimeUnit.MILLISECONDS.convert(System.nanoTime() - startNano, TimeUnit.NANOSECONDS);
+    }
+}