[英]Android: AudioRecord Error code -20 when initializing native AudioRecord object
Android: I want to read buffers from mic so that i can perform process on it, Following is my code Android:我想从麦克风中读取缓冲区,以便我可以对其执行处理,以下是我的代码
int sampleRateInHz = 8000;// 44100, 22050 and 11025
int channelConfig = AudioFormat.CHANNEL_CONFIGURATION_MONO;
int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
//int bufferSize =11025 +
int bufferSize = AudioRecord.getMinBufferSize(sampleRateInHz,channelConfig, audioFormat);
short[] buffer = new short[bufferSize];
AudioRecord audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRateInHz,channelConfig, audioFormat, bufferSize);
if(audioRecord.getState()== AudioRecord.STATE_INITIALIZED){
audioRecord.startRecording();
Log.e("recording", "before");
boolean flag = true;
while (flag) {
int bufferReadResult = audioRecord.read(buffer, 0, bufferSize);
System.out.println(buffer);
}
audioRecord.stop();
audioRecord.release();
}
Log.e("recording", "stopeed");
<uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission>
I get following error every time i try to test the program 每次我尝试测试程序时都会出现以下错误
06-04 00:18:17.222: E/AudioRecord-Java(488): [ android.media.AudioRecord ] Error code -20 when initializing native AudioRecord object. 06-04 00:18:17.222:E / AudioRecord-Java(488):[android.media.AudioRecord]初始化本机AudioRecord对象时的错误代码-20。
This exception is also raised if 如果,也会引发此异常
From what I understand, CHANNEL_CONFIGURATION_MONO is depreciated and you should use instead CHANNEL_IN_MONO when reading into the buffer. 据我所知,CHANNEL_CONFIGURATION_MONO已弃用,在读入缓冲区时应使用CHANNEL_IN_MONO。 I had a similar problem with instantiating the AudioRecord object and this turned out to be the solution for me. 我在实例化AudioRecord对象时遇到了类似的问题,这对我来说是个解决方案。
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