我正在尝试从与 Android 设备配对的蓝牙耳机中捕获音频。
以下是相关代码:
Intent in=null;
final int bufferSize=BufferElements2Rec*BytesPerElement;
final BroadcastReceiver brr=new BroadcastReceiver()
{
@Override
public void onReceive(Context context,Intent intent)
{
int state=intent.getIntExtra(AudioManager.EXTRA_SCO_AUDIO_STATE,-1);
Log.d(labelApp,"Audio SCO State = "+state);
if(AudioManager.SCO_AUDIO_STATE_CONNECTED==state)
{
Log.d(labelApp,"Entered and Starting Recording");
//recorder = new AudioRecord(MediaRecorder.AudioSource.DEFAULT,
// RECORDER_SAMPLERATE, RECORDER_CHANNELS,
// RECORDER_AUDIO_ENCODING, bufferSize);
recorder = new AudioRecord(android.media.MediaRecorder.AudioSource.MIC,
RECORDER_SAMPLERATE, RECORDER_CHANNELS,
RECORDER_AUDIO_ENCODING, bufferSize);
if(recorder==null)
{
Log.d(labelApp,"null");
}
else
{
Log.d(labelApp,"not null");
}
recorder.startRecording();
recordingThread=new Thread(new Runnable()
{
@Override
public void run() {
// TODO Auto-generated method stub
writeAudioDataToFile();
}
},"AudioRecorder Thread");
recordingThread.start();
Log.d(labelApp,"Launched Recording Thread");
}
}
};
try
{
Log.d(labelApp,"Initializing BT");
am = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
//am.setMode(AudioManager.MODE_IN_CALL);
//in=registerReceiver(brr,new IntentFilter(AudioManager.ACTION_SCO_AUDIO_STATE_CHANGED));
//in=registerReceiver(brr,new IntentFilter(AudioManager.ACTION_SCO_AUDIO_STATE_CHANGED));
Log.d(labelApp,"Starting Bluetooth");
am.setStreamSolo(AudioManager.MODE_IN_CALL, true);
am.setBluetoothScoOn(true);
am.setMode(AudioManager.MODE_IN_CALL);
am.startBluetoothSco();
Log.d(labelApp,"Can BT record from mic? "+am.isBluetoothScoAvailableOffCall());
//in=registerReceiver(brr,new IntentFilter(AudioManager.ACTION_SCO_AUDIO_STATE_CHANGED));
in=registerReceiver(brr,new IntentFilter(AudioManager.ACTION_SCO_AUDIO_STATE_UPDATED));
// The following line makes the audio go to hell
//am.setMode(AudioManager.MODE_IN_CALL);
//am.setStreamSolo(AudioManager.MODE_IN_CALL, true);
Log.d(labelApp,"Everything initializated");
Log.d(labelApp,"Recorder is...");
}
catch(Exception e)
{
Log.e(labelApp,"exception",e);
writeStack(e);
}
try
{
Log.d(labelApp,"Initializing BT");
am = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
//am.setMode(AudioManager.MODE_IN_CALL);
//in=registerReceiver(brr,new IntentFilter(AudioManager.ACTION_SCO_AUDIO_STATE_CHANGED));
//in=registerReceiver(brr,new IntentFilter(AudioManager.ACTION_SCO_AUDIO_STATE_CHANGED));
Log.d(labelApp,"Starting Bluetooth");
am.setStreamSolo(AudioManager.MODE_IN_CALL, true);
am.setBluetoothScoOn(true);
am.setMode(AudioManager.MODE_IN_CALL);
am.startBluetoothSco();
Log.d(labelApp,"Can BT record from mic? "+am.isBluetoothScoAvailableOffCall());
//in=registerReceiver(brr,new IntentFilter(AudioManager.ACTION_SCO_AUDIO_STATE_CHANGED));
in=registerReceiver(brr,new IntentFilter(AudioManager.ACTION_SCO_AUDIO_STATE_UPDATED));
// The following line makes the audio go to hell
//am.setMode(AudioManager.MODE_IN_CALL);
//am.setStreamSolo(AudioManager.MODE_IN_CALL, true);
Log.d(labelApp,"Everything initializated");
Log.d(labelApp,"Recorder is...");
}
catch(Exception e)
{
Log.e(labelApp,"exception",e);
writeStack(e);
}
Manifest 请求以下权限:
- WRITE_EXTERNAL_STORAGE
- 录制音频
- 互联网
- MODIFY_AUDIO_SETTINGS
- BROADCAST_STICKY
- 蓝牙
- BLUETOOTH_ADMIN
每个应用程序的典型 Filtered LogCat 输出是:
- 初始化 BT
- 启动蓝牙
- BT可以从麦克风录音吗?真的
- 一切都已初始化
- 录音机是...
- 音频 SCO 状态 = 2
- 音频 SCO 状态 = 1
- 进入并开始录制
- 不为空
- 启动录制线程
当 am.startBluetoothSco(); 被调用时,我可以在 BT 设备上听到短暂的噪音,但随后该应用程序只是从 Android 设备的麦克风中获取音频,而不是 BT 的麦克风。
关于我错过/做错了什么的任何提示?
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