Question

我有一个AVCaptureSession，负责管理我的应用程序的视频和图像捕获。我在应用程序中也有声音效果，当然当用户沉默时在他们的iPhone上切换静音开关。

然而，当我向会话添加AVCaptureAudioDataOutput时，设置静音开关时声音效果不再被静音。

以下是用于添加audion的代码：

    NSError *errorAud;
    AVCaptureDevice *audioDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeAudio];
    AVCaptureDeviceInput *audioDeviceInput = [AVCaptureDeviceInput deviceInputWithDevice:audioDevice error:&errorAud];

    if (errorAud) {

        NSLog(@"%@", [errorAud localizedDescription]);
    }

    if ( [avSession canAddInput:audioDeviceInput] ) {
        [avSession addInput:audioDeviceInput];
        [self setAudioCaptureDeviceInput:audioDeviceInput];
    }


    audioOutput = [[AVCaptureAudioDataOutput alloc] init];
    [audioOutput setSampleBufferDelegate:self queue:vsessionQueue];




    if ([avSession canAddOutput:audioOutput]) {
        [avSession addOutput:audioOutput];
    }


    for (AVCaptureConnection *connection in [audioOutput connections]) {
        for (AVCaptureInputPort *port in [connection inputPorts]) {
            if ([[port mediaType] isEqual:AVMediaTypeAudio]) {

                audioConnection = connection;

                break;
            }
        }

    }

    AVAuthorizationStatus audioAuthorizationStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeAudio];



    //This sort of fixes the silent mode issue but makes the capture session
    //stop outputs stop calling didOutputSampleBuffer
    //Whenever a sound effect is played
    //avSession.usesApplicationAudioSession = NO;
    //avSession.automaticallyConfiguresApplicationAudioSession = NO;

从上面可以看出，我尝试搞乱 usesApplicationAudioSession 和 automaticConfiguresApplicationAudioSession ，但设置 usesApplicationAudioSession = NO 使capturesession停止调用

- （void）captureOutput：（AVCaptureOutput *）captureOutput didOutputSampleBuffer：（CMSampleBufferRef）sampleBuffer fromConnection：（AVCaptureConnection *）连接

每当我使用AVAudioPlayer播放音效时

iOS / iPhone - 将AVCaptureAudioDataOutput添加到AVCaptureSession后，静音开关无法正常工作

0 个答案: