Diff: dcs-sdk-java-master/app/src/main/java/com/baidu/duer/dcs/androidsystemimpl/AudioRecordThread.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/androidsystemimpl/AudioRecordThread.java	Tue Jul 18 16:34:48 2017 +0800
@@ -0,0 +1,84 @@
+/*
+ * *
+ * 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.androidsystemimpl;
+
+import android.media.AudioFormat;
+import android.media.AudioRecord;
+import android.media.MediaRecorder;
+
+import com.baidu.duer.dcs.systeminterface.IAudioRecord;
+import com.baidu.duer.dcs.util.LogUtil;
+
+import java.util.concurrent.LinkedBlockingDeque;
+
+/**
+ * 录音采集线程-音频数据生产者
+ * <p>
+ * Created by guxiuzhong@baidu.com on 2017/6/26.
+ */
+public class AudioRecordThread extends Thread implements IAudioRecord {
+    private static final String TAG = AudioRecordThread.class.getSimpleName();
+    // 采样率
+    private static final int SAMPLE_RATE_HZ = 16000;
+    private int bufferSize;
+    private AudioRecord audioRecord;
+    private volatile boolean isStartRecord = false;
+    private LinkedBlockingDeque<byte[]> linkedBlockingDeque;
+
+    public AudioRecordThread(LinkedBlockingDeque<byte[]> linkedBlockingDeque) {
+        this.linkedBlockingDeque = linkedBlockingDeque;
+        bufferSize = AudioRecord.getMinBufferSize(SAMPLE_RATE_HZ, AudioFormat.CHANNEL_IN_MONO,
+                AudioFormat.ENCODING_PCM_16BIT);
+        audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, SAMPLE_RATE_HZ, AudioFormat.CHANNEL_IN_MONO,
+                AudioFormat.ENCODING_PCM_16BIT, bufferSize);
+    }
+
+    @Override
+    public void startRecord() {
+        if (isStartRecord) {
+            return;
+        }
+        isStartRecord = true;
+        this.start();
+    }
+
+    @Override
+    public void stopRecord() {
+        isStartRecord = false;
+    }
+
+    @Override
+    public void run() {
+        super.run();
+        LogUtil.i(TAG, "audioRecord startRecording ");
+        audioRecord.startRecording();
+        byte[] buffer = new byte[bufferSize];
+        while (isStartRecord) {
+            int readBytes = audioRecord.read(buffer, 0, bufferSize);
+            if (readBytes > 0) {
+                linkedBlockingDeque.add(buffer);
+            }
+        }
+        // 清空数据
+        linkedBlockingDeque.clear();
+        // 释放资源
+        audioRecord.stop();
+        audioRecord.release();
+        audioRecord = null;
+        LogUtil.i(TAG, "audioRecord release ");
+    }
+}
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