bowen liu / Mbed OS mbed-os-example-blinky

ex

Fork of mbed-os-example-mbed5-blinky by mbed-os-examples

dcs-sdk-java-master/app/src/main/java/com/baidu/duer/dcs/devicemodule/audioplayer/report/AudioPlayerTimer.java@45:2aa9f933c8d2, 2017-07-18 (annotated)

Committer:
TMBOY
Date:
Tue Jul 18 16:34:48 2017 +0800
Revision:
45:2aa9f933c8d2
?

Who changed what in which revision?

UserRevisionLine numberNew contents of line
TMBOY 45:2aa9f933c8d2 1 /*
TMBOY 45:2aa9f933c8d2 2 * Copyright (c) 2017 Baidu, Inc. All Rights Reserved.
TMBOY 45:2aa9f933c8d2 3 *
TMBOY 45:2aa9f933c8d2 4 * Licensed under the Apache License, Version 2.0 (the "License");
TMBOY 45:2aa9f933c8d2 5 * you may not use this file except in compliance with the License.
TMBOY 45:2aa9f933c8d2 6 * You may obtain a copy of the License at
TMBOY 45:2aa9f933c8d2 7 *
TMBOY 45:2aa9f933c8d2 8 * http://www.apache.org/licenses/LICENSE-2.0
TMBOY 45:2aa9f933c8d2 9 *
TMBOY 45:2aa9f933c8d2 10 * Unless required by applicable law or agreed to in writing, software
TMBOY 45:2aa9f933c8d2 11 * distributed under the License is distributed on an "AS IS" BASIS,
TMBOY 45:2aa9f933c8d2 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
TMBOY 45:2aa9f933c8d2 13 * See the License for the specific language governing permissions and
TMBOY 45:2aa9f933c8d2 14 * limitations under the License.
TMBOY 45:2aa9f933c8d2 15 */
TMBOY 45:2aa9f933c8d2 16 package com.baidu.duer.dcs.devicemodule.audioplayer.report;
TMBOY 45:2aa9f933c8d2 17
TMBOY 45:2aa9f933c8d2 18 import java.util.concurrent.TimeUnit;
TMBOY 45:2aa9f933c8d2 19
TMBOY 45:2aa9f933c8d2 20 /**
TMBOY 45:2aa9f933c8d2 21 * audio 播放统计OffsetInMilliseconds
TMBOY 45:2aa9f933c8d2 22 * <p>
TMBOY 45:2aa9f933c8d2 23 * Created by guxiuzhong@baidu.com on 2017/5/22.
TMBOY 45:2aa9f933c8d2 24 */
TMBOY 45:2aa9f933c8d2 25 public class AudioPlayerTimer {
TMBOY 45:2aa9f933c8d2 26 private long startNano;
TMBOY 45:2aa9f933c8d2 27 private long elapsedTimeMs;
TMBOY 45:2aa9f933c8d2 28 private long totalStreamLength;
TMBOY 45:2aa9f933c8d2 29 private boolean isPlaying = false;
TMBOY 45:2aa9f933c8d2 30
TMBOY 45:2aa9f933c8d2 31 public synchronized void start() {
TMBOY 45:2aa9f933c8d2 32 startNano = System.nanoTime();
TMBOY 45:2aa9f933c8d2 33 isPlaying = true;
TMBOY 45:2aa9f933c8d2 34 }
TMBOY 45:2aa9f933c8d2 35
TMBOY 45:2aa9f933c8d2 36 public synchronized void stop() {
TMBOY 45:2aa9f933c8d2 37 if (isPlaying) {
TMBOY 45:2aa9f933c8d2 38 elapsedTimeMs += getCurrentOffsetInMilliseconds();
TMBOY 45:2aa9f933c8d2 39 isPlaying = false;
TMBOY 45:2aa9f933c8d2 40 }
TMBOY 45:2aa9f933c8d2 41 }
TMBOY 45:2aa9f933c8d2 42
TMBOY 45:2aa9f933c8d2 43 public synchronized long getOffsetInMilliseconds() {
TMBOY 45:2aa9f933c8d2 44 long offset = elapsedTimeMs + (isPlaying ? getCurrentOffsetInMilliseconds() : 0);
TMBOY 45:2aa9f933c8d2 45 if (totalStreamLength > 0) {
TMBOY 45:2aa9f933c8d2 46 offset = Math.min(totalStreamLength, offset);
TMBOY 45:2aa9f933c8d2 47 }
TMBOY 45:2aa9f933c8d2 48 return offset;
TMBOY 45:2aa9f933c8d2 49 }
TMBOY 45:2aa9f933c8d2 50
TMBOY 45:2aa9f933c8d2 51 public void reset() {
TMBOY 45:2aa9f933c8d2 52 reset(0);
TMBOY 45:2aa9f933c8d2 53 }
TMBOY 45:2aa9f933c8d2 54
TMBOY 45:2aa9f933c8d2 55 public void reset(long startPosition) {
TMBOY 45:2aa9f933c8d2 56 reset(startPosition, -1);
TMBOY 45:2aa9f933c8d2 57 }
TMBOY 45:2aa9f933c8d2 58
TMBOY 45:2aa9f933c8d2 59 public synchronized void reset(long startPosition, long maxPosition) {
TMBOY 45:2aa9f933c8d2 60 elapsedTimeMs = startPosition;
TMBOY 45:2aa9f933c8d2 61 isPlaying = false;
TMBOY 45:2aa9f933c8d2 62 startNano = System.nanoTime();
TMBOY 45:2aa9f933c8d2 63 totalStreamLength = maxPosition;
TMBOY 45:2aa9f933c8d2 64 }
TMBOY 45:2aa9f933c8d2 65
TMBOY 45:2aa9f933c8d2 66 private long getCurrentOffsetInMilliseconds() {
TMBOY 45:2aa9f933c8d2 67 return TimeUnit.MILLISECONDS.convert(System.nanoTime() - startNano, TimeUnit.NANOSECONDS);
TMBOY 45:2aa9f933c8d2 68 }
TMBOY 45:2aa9f933c8d2 69 }