RCTCamera.m

#import "RCTBridge.h"
#import "RCTCamera.h"
#import "RCTCameraManager.h"
#import "RCTLog.h"
#import "RCTUtils.h"

#import <AVFoundation/AVFoundation.h>

@implementation RCTCamera

- (void)setAspect:(NSInteger)aspect
{
    NSString *aspectString;
    switch (aspect) {
      default:
      case RCTCameraAspectFill:
        aspectString = AVLayerVideoGravityResizeAspectFill;
        break;
      case RCTCameraAspectFit:
        aspectString = AVLayerVideoGravityResizeAspect;
        break;
      case RCTCameraAspectStretch:
        aspectString = AVLayerVideoGravityResize;
        break;
    }
    [self.manager changeAspect:aspectString];
}

- (void)setType:(NSInteger)type
{
    if (self.manager.session.isRunning) {
        [self.manager changeCamera:type];
    }
    else {
        self.manager.presetCamera = type;
    }
}

- (void)setOrientation:(NSInteger)orientation
{
    if (orientation == RCTCameraOrientationAuto) {
        [self.manager changeOrientation:[UIApplication sharedApplication].statusBarOrientation];
        [[NSNotificationCenter defaultCenter] addObserver:self  selector:@selector(orientationChanged:)    name:UIDeviceOrientationDidChangeNotification  object:nil];
    }
    else {
        [[NSNotificationCenter defaultCenter]removeObserver:self name:UIDeviceOrientationDidChangeNotification object:nil];
        [self.manager changeOrientation:orientation];
    }
}

- (void)setFlashMode:(NSInteger)flashMode
{
    [self.manager changeFlashMode:flashMode];
}

- (void)setTorchMode:(NSInteger)torchMode
{
    [self.manager changeTorchMode:torchMode];
}

- (id)initWithManager:(RCTCameraManager*)manager
{

    if ((self = [super init])) {
        self.manager = manager;
    }
    return self;
}

- (void)layoutSubviews
{
    [super layoutSubviews];
    self.manager.previewLayer.frame = self.bounds;
    [self setBackgroundColor:[UIColor blackColor]];
    [self.layer insertSublayer:self.manager.previewLayer atIndex:0];
}

- (void)insertReactSubview:(UIView *)view atIndex:(NSInteger)atIndex
{
    [self insertSubview:view atIndex:atIndex + 1];
    return;
}

- (void)removeReactSubview:(UIView *)subview
{
    [subview removeFromSuperview];
    return;
}

- (void)removeFromSuperview
{
  [super removeFromSuperview];
  [[NSNotificationCenter defaultCenter] removeObserver:self name:UIDeviceOrientationDidChangeNotification object:nil];
}

- (void)orientationChanged:(NSNotification *)notification{
    UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
    [self.manager changeOrientation:orientation];
}

@end