如何记录从蓝牙设备麦克风的声音和在设备扬声器播放

Question

我曾尝试使用的代码 record input coming from bluetooth headset in iPhone 虽然与这些代码我能够记录声音，但不能从蓝牙设备mic.its从设备（iphone ）麦克风 我将如何将录制的声音发送给演讲者。 PLž帮助我和任何帮助赞赏

// create and set up the audio session 
    AVAudioSession* audioSession = [AVAudioSession sharedInstance]; 
    [audioSession setDelegate:self]; 
    [audioSession setCategory: AVAudioSessionCategoryPlayAndRecord error: nil]; 
    [audioSession setActive: YES error: nil]; 

// set up for bluetooth microphone input 
UInt32 allowBluetoothInput = 1; 
OSStatus stat = AudioSessionSetProperty (
         kAudioSessionProperty_OverrideCategoryEnableBluetoothInput, 
         sizeof (allowBluetoothInput), 
         &allowBluetoothInput 
         ); 
NSLog(@"status = %x", stat); // problem if this is not zero 

// check the audio route 
UInt32 size = sizeof(CFStringRef); 
CFStringRef route; 
OSStatus result = AudioSessionGetProperty(kAudioSessionProperty_AudioRoute, &size, &route); 
NSLog(@"route = %@", route);  
// if bluetooth headset connected, should be "HeadsetBT" 
// if not connected, will be "ReceiverAndMicrophone" 

// now, play a quick sound we put in the bundle (bomb.wav) 
CFBundleRef mainBundle = CFBundleGetMainBundle(); 
CFURLRef  soundFileURLRef; 
SystemSoundID soundFileObject; 
soundFileURLRef = CFBundleCopyResourceURL (mainBundle,CFSTR ("bomb"),CFSTR ("wav"),NULL); 

NSError *error = nil; 

audioRecorder = [[AVAudioRecorder alloc] 
       initWithURL:soundFileURLRef 
       settings:recordSettings 
       error:&error]; 
if (error) 
{ 
    NSLog(@"error: %@", [error localizedDescription]); 
} else { 
    [audioRecorder prepareToRecord]; 
} 

Answer 1

是上述概念是正确的，对我来说非常有帮助的（但做了一点补充或修改），但路由到扬声器（设备扬声器）需要新的会话创建

采取从蓝牙输入我们有像

//// create and set up the audio session 
AVAudioSession* audioSession = [AVAudioSession sharedInstance]; 
[audioSession setDelegate:self]; 
[audioSession setCategory: AVAudioSessionCategoryRecord error: nil]; 
[audioSession setActive: YES error: nil]; 

// set up for bluetooth microphone input 
UInt32 allowBluetoothInput = 1; 
AudioSessionSetProperty (kAudioSessionProperty_OverrideCategoryEnableBluetoothInput,sizeof (allowBluetoothInput),&allowBluetoothInput); 

，并当过ü要在那个时候不发青的声音BluetoothDevice类扬声器覆盖会话使用newily创建会话建立一个

- (IBAction)playAudio:(id)sender { 



[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil]; 
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker; 
AudioSessionSetProperty(kAudioSessionProperty_OverrideAudioRoute, sizeof(audioRouteOverride), &audioRouteOverride); 




UInt32 size = sizeof(CFStringRef); 
CFStringRef route; 
OSStatus result = AudioSessionGetProperty(kAudioSessionProperty_AudioRoute, &size, &route); 
NSLog(@"route = %@", route); 
    //here u can diffrent route set up based on session audiosessionid 

}