【iOS】カメラプレビュー

カメラプレビュー

void ofApp::setupCameraPreview()
{
    AVCaptureSession *session = [AVCaptureSession new];
    [session setSessionPreset:AVCaptureSessionPreset1280x720];
    
    AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    AVCaptureDeviceInput *deviceInput = [AVCaptureDeviceInput deviceInputWithDevice:device error:nil];
    
    if ([session canAddInput:deviceInput]){
        [session addInput:deviceInput];
    }
    
    previewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session];
    [previewLayer setBackgroundColor:[[UIColor blackColor] CGColor]];
    [previewLayer setVideoGravity:AVLayerVideoGravityResizeAspect];
    
    [[previewLayer connection]setVideoOrientation:AVCaptureVideoOrientationLandscapeRight];
    
    cameraView = [[UIView alloc]initWithFrame: CGRectMake(0,0,ofGetWidth(),ofGetHeight())];
    cameraView.backgroundColor = [UIColor colorWithRed:0.0f green:0.0f blue:0.0f alpha:1.f];
    
    CALayer *rootLayer = [cameraView layer];
    [rootLayer setMasksToBounds:YES];
    [previewLayer setFrame:[rootLayer bounds]];
    [rootLayer addSublayer:previewLayer];
    [session startRunning];
   
    [viewController.view addSubview: cameraView];
}