AVCaputeDeviceInput捕获蓝牙输入

Question

我知道如何将AVAudioSession设置为能够从蓝牙设备读取音频输入。我通过以下代码完成此任务：

  NSError *error;
  [[AVAudioSession sharedInstance] setActive:NO error:&error];

  [self.audioSession setCategory:AVAudioSessionCategoryPlayAndRecord
                                   withOptions:AVAudioSessionCategoryOptionAllowBluetooth error:nil];

  NSError *errorTwo;
  [self.audioSession  setActive:YES error:&errorTwo];

通过将选项设置为AVAudioSessionOptionAllowBlueTooth，我可以设置它。但是，我正试图让它与录像机一起工作，我正在努力让这个工作。

我将发布从AVCaptureSession开始的内容：

     self.captureSession = [AVCaptureSession new];

      NSError *error;
      [[AVAudioSession sharedInstance] setActive:NO error:&error];


      self.captureSession.automaticallyConfiguresApplicationAudioSession = YES;
      self.captureSession.automaticallyConfiguresApplicationAudioSession = true;

      [self.audioSession setCategory:AVAudioSessionCategoryPlayAndRecord
                                       withOptions:AVAudioSessionCategoryOptionAllowBluetooth error:nil];

      NSError *errorTwo;
      [self.audioSession  setActive:YES error:&errorTwo];

     [self addAudioCapture];

      AVCaptureDevice *audioInputDevice = [self audioDevice];



    - (BOOL)addAudioCapture
    {
      AVCaptureDevice *audioInputDevice = [self audioDevice];

      DLog(@"AUDIO INPUT DEVICE: %@", [audioInputDevice description]);

      AVCaptureDeviceInput *audioIn = [[AVCaptureDeviceInput alloc] initWithDevice:audioInputDevice error:nil];

      if ([self.captureSession canAddInput:audioIn])
      {
        [self.captureSession addInput:audioIn];
      }

      else
      {
        return NO;
      }

        self.audioOut = [[AVCaptureAudioDataOutput alloc] init];

        dispatch_queue_t audioCaptureQueue = dispatch_queue_create("Audio Capture Queue", DISPATCH_QUEUE_SERIAL);

        [self.audioOut setSampleBufferDelegate:self queue:audioCaptureQueue];

        if ([self.captureSession canAddOutput:self.audioOut])
      {
            [self.captureSession addOutput:self.audioOut];
      }

      else
      {
        return NO;
      }

        self.audioConnection = [self.audioOut connectionWithMediaType:AVMediaTypeAudio];

      return YES;
    }

- (AVCaptureDevice *)audioDevice
{
  NSArray *devices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeAudio];

  if ([devices count] > 0)
  {
    return [devices objectAtIndex:0];
  }

  return nil;
}

然而，我面临的问题是audioInputDevice始终是iPhone麦克风。我已经确认我的蓝牙设备与我的手机配对，我已经编写了一个单独的应用程序来测试我当前正在使用的输入/输出，我可以确认iPhone可以读取蓝牙设备。但是，在我正在工作的主应用程序中，我无法设置它。任何有关如何实现这一目标的提示或建议将不胜感激。