使用AudioRecorder录音，报E/AudioRecord-JNI: Error -38 during AudioRecord native read
尝试过：
1：将// private final static int AUDIO_CHANNEL = AudioFormat.CHANNEL_IN_STEREO;改成AudioFormat.CHANNEL_IN_MONO;没用；
2：可能其他应用程序正在占用录制音视频的硬件资源重新启动手机重新运行，没用；
3：权限加了
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAMERA" />没用
该怎么解决？求指导
public class AudioRecorder {
//音频输入-麦克风
private final static int AUDIO_INPUT = MediaRecorder.AudioSource.MIC;
//采用频率
//44100是目前的标准，但是某些设备仍然支持22050，16000，11025
//采样频率一般共分为22.05KHz、44.1KHz、48KHz三个等级
// private final static int AUDIO_SAMPLE_RATE = 48000;
private final static int AUDIO_SAMPLE_RATE = 44100;
//声道
// private final static int AUDIO_CHANNEL = AudioFormat.CHANNEL_IN_STEREO;
private final static int AUDIO_CHANNEL = AudioFormat.CHANNEL_IN_MONO;
//编码
private final static int AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;
private static final String TAG = "";
// 缓冲区字节大小
private int bufferSizeInBytes = 0;
//录音对象
private AudioRecord audioRecord;
//转码器
private FdkAacEncode fdkAacEnc = null;
private RtmpSessionManager rtmpSessionMgr = null;
private int fdkAacHandle = 0;
//录音状态
private Status status = Status.STATUS_NO_READY;
/**
* 类级的内部类，也就是静态类的成员式内部类，该内部类的实例与外部类的实例
* 没有绑定关系，而且只有被调用时才会装载，从而实现了延迟加载
*/
private static class AudioRecorderHolder {
/**
* 静态初始化器，由JVM来保证线程安全
*/
private static final AudioRecorder instance = new AudioRecorder();
}
private AudioRecorder() {
}
public static AudioRecorder getInstance() {
return AudioRecorderHolder.instance;
}
/**
* 创建默认的录音对象
*/
public void createDefaultAudio() {
// 获得缓冲区字节大小
bufferSizeInBytes = AudioRecord.getMinBufferSize(AUDIO_SAMPLE_RATE,
AUDIO_CHANNEL, AUDIO_ENCODING);
audioRecord = new AudioRecord(AUDIO_INPUT, AUDIO_SAMPLE_RATE,
AUDIO_CHANNEL, AUDIO_ENCODING, bufferSizeInBytes);
status = Status.STATUS_READY;
fdkAacEnc = new FdkAacEncode();
fdkAacHandle = fdkAacEnc.FdkAacInit(AUDIO_SAMPLE_RATE, 2);
rtmpSessionMgr = new RtmpSessionManager();
rtmpSessionMgr.Start("rtmp://124.220.11.79:1932/live/si");
}
/**
* 开始录音
*
* @param listener 音频流的监听
*/
public void startRecord() {
if (status == Status.STATUS_NO_READY) {
throw new IllegalStateException("录音尚未初始化,请检查是否禁止了录音权限~");
}
if (status == Status.STATUS_START) {
throw new IllegalStateException("正在录音");
}
Log.d("AudioRecorder", "===startRecord===" + audioRecord.getState());
audioRecord.startRecording();
new Thread(() -> sendVoiceData()).start();
}
private void sendVoiceData() {
byte[] audioData = new byte[bufferSizeInBytes];
int readSize;
//将录音状态设置成正在录音状态
status = Status.STATUS_START;
while (status == Status.STATUS_START) {
readSize = audioRecord.read(audioData, 0, bufferSizeInBytes);
if (AudioRecord.ERROR_INVALID_OPERATION != readSize && readSize != 0) {
if (fdkAacHandle != 0) {
byte[] aacBuffer = fdkAacEnc.FdkAacEncode(fdkAacHandle, audioData);
if (aacBuffer != null) {
rtmpSessionMgr.InsertAudioData(aacBuffer);
}
}
}
}
}
//test,如此拼接？
private void sendVoiceDataTest() {
byte[] audioData = new byte[bufferSizeInBytes];
int bufferCount = 0; // 当前已经拼接的次数
int bufferSize = 0; // 当前已经拼接的数据长度
byte[] outputBuffer = new byte[2000]; // 输出缓冲区，假设最多拼接四次，每次输出1000字节
//将录音状态设置成正在录音状态
status = Status.STATUS_START;
while (status == Status.STATUS_START) {
int readSize = audioRecord.read(audioData, 0, bufferSizeInBytes);
if (AudioRecord.ERROR_INVALID_OPERATION != readSize && readSize != 0) {
if (fdkAacHandle != 0) {
byte[] aacBuffer = fdkAacEnc.FdkAacEncode(fdkAacHandle, audioData);
if (aacBuffer != null) {
// 将当前的 aacBuffer 拼接到输出缓冲区中
System.arraycopy(aacBuffer, 0, outputBuffer, bufferSize, aacBuffer.length);
bufferSize += aacBuffer.length;
bufferCount++;
// 如果已经拼接了四次，则输出前四次的数据并执行 rtmpSessionMgr.InsertAudioData(aacBuffer)
if (bufferCount >= 4) {
System.out.println("输出前四次的数据：" + Arrays.toString(outputBuffer));
System.out.println(outputBuffer.length);
rtmpSessionMgr.InsertAudioData(outputBuffer);
// 重置缓冲区和拼接次数和拼接长度
bufferCount = 0;
bufferSize = 0;
outputBuffer = new byte[2000];
}
}
}
}
}
}
/**
* 停止录音
*/
public void stopRecord() {
Log.d("AudioRecorder", "===stopRecord===");
if (status == Status.STATUS_NO_READY || status == Status.STATUS_READY) {
throw new IllegalStateException("录音尚未开始");
} else {
audioRecord.stop();
status = Status.STATUS_STOP;
release();
}
}
/**
* 释放资源
*/
public void release() {
Log.d("AudioRecorder", "===release===");
//假如有暂停录音
if (audioRecord != null) {
audioRecord.release();
audioRecord = null;
}
if (rtmpSessionMgr != null) {
rtmpSessionMgr.Stop();
}
status = Status.STATUS_NO_READY;
}
}
