安卓录音错误启动状态-38

Question

我在尝试使用录音启动录制会话时遇到此错误，似乎是音频源繁忙，但我找不到有关此错误代码的任何文档或信息。我想做的是

private class AudioRecordRunnable implements Runnable {
private final AudioRecord mAudioRecord;
private final AudioDataCallback mAudioDataCallback;
private byte[] mByteBuffer;
private final short[] mShortBuffer;
private final int mByteBufferSize;
private final int mShortBufferSize;
private final int mAudioFormat;
AudioRecordRunnable(int sampleRate, int channelConfig, int audioFormat, int byteBufferSize,
@NonNull AudioDataCallback audioDataCallback) {
mAudioFormat = audioFormat;
int minBufferSize =
AudioRecord.getMinBufferSize(sampleRate, channelConfig, mAudioFormat);
mByteBufferSize = byteBufferSize;
mShortBufferSize = mByteBufferSize / 2;
mShortBuffer = new short[mShortBufferSize];
bufferSize = Math.max(minBufferSize, byteBufferSize);
mAudioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate, channelConfig,
audioFormat, bufferSize);
mAudioDataCallback = audioDataCallback;
}
@Override
public void run() {
if (mAudioRecord.getState() == AudioRecord.STATE_INITIALIZED) {
try {
try {
mAudioRecord.startRecording();
} catch (IllegalStateException e) {
Log.w(TAG, "startRecording fail: " + e.getMessage());
mAudioDataCallback.onError();
return;
}
while (mIsRecording.get()) {
int ret;
if (mAudioFormat == AudioFormat.ENCODING_PCM_16BIT) {
ret = mAudioRecord.read(mShortBuffer, 0, mShortBufferSize);
if (ret > 0) {
mByteBuffer = new byte[mByteBufferSize];
mAudioDataCallback.onAudioData(
short2byte(mShortBuffer, ret, mByteBuffer), ret * 2);
} else {
onError(ret);
break;
}
} else {
ret = mAudioRecord.read(mByteBuffer, 0, mByteBufferSize);
if (ret > 0) {
mAudioDataCallback.onAudioData(mByteBuffer, ret);
} else {
onError(ret);
break;
}
}
}
}finally {
mAudioRecord.stop();
mAudioRecord.release();
}
}
}

private byte[] short2byte(short[] sData, int size, byte[] bData) {
if (size > sData.length || size * 2 > bData.length) {
Log.w(TAG, "short2byte: too long short data array");
}
for (int i = 0; i < size; i++) {
bData[i * 2] = (byte) (sData[i] & 0x00FF);
bData[(i * 2) + 1] = (byte) (sData[i] >> 8);
}
return bData;
}
private void onError(int errorCode) {
mAudioDataCallback.onError();
Log.w(TAG, "record fail: " + String.valueOf(errorCode));
if (errorCode == AudioRecord.ERROR_INVALID_OPERATION) {
Log.w(TAG, "record fail: ERROR_INVALID_OPERATION");
} else if (errorCode == AudioRecord.ERROR_BAD_VALUE) {
Log.w(TAG, "record fail: ERROR_BAD_VALUE");
}
}
}

我在日志猫中收到此消息

E/音频记录：开始(( 状态 -38

但是没有抛出异常，结果 ret = mAudioRecord.read(mShortBuffer， 0， mShortBufferSize(;

始终为 0

如何避免此错误？

Answer 1

也许，另一个进程使用您的麦克风。