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

Committer:
TMBOY
Date:
Tue Jul 18 16:34:48 2017 +0800
Revision:
45:2aa9f933c8d2
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Who changed what in which revision?

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TMBOY 45:2aa9f933c8d2 1 /*
TMBOY 45:2aa9f933c8d2 2 * *
TMBOY 45:2aa9f933c8d2 3 * Copyright (c) 2017 Baidu, Inc. All Rights Reserved.
TMBOY 45:2aa9f933c8d2 4 *
TMBOY 45:2aa9f933c8d2 5 * Licensed under the Apache License, Version 2.0 (the "License");
TMBOY 45:2aa9f933c8d2 6 * you may not use this file except in compliance with the License.
TMBOY 45:2aa9f933c8d2 7 * You may obtain a copy of the License at
TMBOY 45:2aa9f933c8d2 8 *
TMBOY 45:2aa9f933c8d2 9 * http://www.apache.org/licenses/LICENSE-2.0
TMBOY 45:2aa9f933c8d2 10 *
TMBOY 45:2aa9f933c8d2 11 * Unless required by applicable law or agreed to in writing, software
TMBOY 45:2aa9f933c8d2 12 * distributed under the License is distributed on an "AS IS" BASIS,
TMBOY 45:2aa9f933c8d2 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
TMBOY 45:2aa9f933c8d2 14 * See the License for the specific language governing permissions and
TMBOY 45:2aa9f933c8d2 15 * limitations under the License.
TMBOY 45:2aa9f933c8d2 16 */
TMBOY 45:2aa9f933c8d2 17 package com.baidu.duer.dcs.androidsystemimpl;
TMBOY 45:2aa9f933c8d2 18
TMBOY 45:2aa9f933c8d2 19 import android.media.AudioFormat;
TMBOY 45:2aa9f933c8d2 20 import android.media.AudioRecord;
TMBOY 45:2aa9f933c8d2 21 import android.media.MediaRecorder;
TMBOY 45:2aa9f933c8d2 22
TMBOY 45:2aa9f933c8d2 23 import com.baidu.duer.dcs.systeminterface.IAudioRecord;
TMBOY 45:2aa9f933c8d2 24 import com.baidu.duer.dcs.util.LogUtil;
TMBOY 45:2aa9f933c8d2 25
TMBOY 45:2aa9f933c8d2 26 import java.util.concurrent.LinkedBlockingDeque;
TMBOY 45:2aa9f933c8d2 27
TMBOY 45:2aa9f933c8d2 28 /**
TMBOY 45:2aa9f933c8d2 29 * 录音采集线程-音频数据生产者
TMBOY 45:2aa9f933c8d2 30 * <p>
TMBOY 45:2aa9f933c8d2 31 * Created by guxiuzhong@baidu.com on 2017/6/26.
TMBOY 45:2aa9f933c8d2 32 */
TMBOY 45:2aa9f933c8d2 33 public class AudioRecordThread extends Thread implements IAudioRecord {
TMBOY 45:2aa9f933c8d2 34 private static final String TAG = AudioRecordThread.class.getSimpleName();
TMBOY 45:2aa9f933c8d2 35 // 采样率
TMBOY 45:2aa9f933c8d2 36 private static final int SAMPLE_RATE_HZ = 16000;
TMBOY 45:2aa9f933c8d2 37 private int bufferSize;
TMBOY 45:2aa9f933c8d2 38 private AudioRecord audioRecord;
TMBOY 45:2aa9f933c8d2 39 private volatile boolean isStartRecord = false;
TMBOY 45:2aa9f933c8d2 40 private LinkedBlockingDeque<byte[]> linkedBlockingDeque;
TMBOY 45:2aa9f933c8d2 41
TMBOY 45:2aa9f933c8d2 42 public AudioRecordThread(LinkedBlockingDeque<byte[]> linkedBlockingDeque) {
TMBOY 45:2aa9f933c8d2 43 this.linkedBlockingDeque = linkedBlockingDeque;
TMBOY 45:2aa9f933c8d2 44 bufferSize = AudioRecord.getMinBufferSize(SAMPLE_RATE_HZ, AudioFormat.CHANNEL_IN_MONO,
TMBOY 45:2aa9f933c8d2 45 AudioFormat.ENCODING_PCM_16BIT);
TMBOY 45:2aa9f933c8d2 46 audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, SAMPLE_RATE_HZ, AudioFormat.CHANNEL_IN_MONO,
TMBOY 45:2aa9f933c8d2 47 AudioFormat.ENCODING_PCM_16BIT, bufferSize);
TMBOY 45:2aa9f933c8d2 48 }
TMBOY 45:2aa9f933c8d2 49
TMBOY 45:2aa9f933c8d2 50 @Override
TMBOY 45:2aa9f933c8d2 51 public void startRecord() {
TMBOY 45:2aa9f933c8d2 52 if (isStartRecord) {
TMBOY 45:2aa9f933c8d2 53 return;
TMBOY 45:2aa9f933c8d2 54 }
TMBOY 45:2aa9f933c8d2 55 isStartRecord = true;
TMBOY 45:2aa9f933c8d2 56 this.start();
TMBOY 45:2aa9f933c8d2 57 }
TMBOY 45:2aa9f933c8d2 58
TMBOY 45:2aa9f933c8d2 59 @Override
TMBOY 45:2aa9f933c8d2 60 public void stopRecord() {
TMBOY 45:2aa9f933c8d2 61 isStartRecord = false;
TMBOY 45:2aa9f933c8d2 62 }
TMBOY 45:2aa9f933c8d2 63
TMBOY 45:2aa9f933c8d2 64 @Override
TMBOY 45:2aa9f933c8d2 65 public void run() {
TMBOY 45:2aa9f933c8d2 66 super.run();
TMBOY 45:2aa9f933c8d2 67 LogUtil.i(TAG, "audioRecord startRecording ");
TMBOY 45:2aa9f933c8d2 68 audioRecord.startRecording();
TMBOY 45:2aa9f933c8d2 69 byte[] buffer = new byte[bufferSize];
TMBOY 45:2aa9f933c8d2 70 while (isStartRecord) {
TMBOY 45:2aa9f933c8d2 71 int readBytes = audioRecord.read(buffer, 0, bufferSize);
TMBOY 45:2aa9f933c8d2 72 if (readBytes > 0) {
TMBOY 45:2aa9f933c8d2 73 linkedBlockingDeque.add(buffer);
TMBOY 45:2aa9f933c8d2 74 }
TMBOY 45:2aa9f933c8d2 75 }
TMBOY 45:2aa9f933c8d2 76 // 清空数据
TMBOY 45:2aa9f933c8d2 77 linkedBlockingDeque.clear();
TMBOY 45:2aa9f933c8d2 78 // 释放资源
TMBOY 45:2aa9f933c8d2 79 audioRecord.stop();
TMBOY 45:2aa9f933c8d2 80 audioRecord.release();
TMBOY 45:2aa9f933c8d2 81 audioRecord = null;
TMBOY 45:2aa9f933c8d2 82 LogUtil.i(TAG, "audioRecord release ");
TMBOY 45:2aa9f933c8d2 83 }
TMBOY 45:2aa9f933c8d2 84 }