PrivateBoxiOS/创维盒子/双子星云手机/Class/Guide/QRCodeScanViewController.m

//
//  QRCodeScanViewController.m
//  隐私保护
//
//  Created by APPLE on 2023/9/19.
//

#import "QRCodeScanViewController.h"
#import <AVFoundation/AVFoundation.h>
#import <ImageIO/ImageIO.h>
#import "GuideViewController.h"

@interface QRCodeScanViewController ()<AVCaptureMetadataOutputObjectsDelegate,AVCaptureVideoDataOutputSampleBufferDelegate,UINavigationControllerDelegate,UIImagePickerControllerDelegate>

@property(nonatomic,strong)AVCaptureVideoPreviewLayer *layer;

//捕捉会话

@property(nonatomic,strong)AVCaptureSession *session;

//辅助区域框

@property(nonatomic,strong)UIView * cyanView;

////打开灯光btn,默认为hidden
//
//@property(nonatomic,strong)UIButton * lightBtn;
//
////获取相册图片进行扫描
//
//@property(nonatomic,strong)UIButton * photoBtn;

@end

@implementation QRCodeScanViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    [self.navigationBar setHidden:YES];
    [self.toolBar setHidden:YES];
    
    AVAuthorizationStatus authStatus =[AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    //判断摄像头状态是否可用
    if(authStatus==AVAuthorizationStatusAuthorized){
        [self startScan];
    }else{
        NSLog(@"未开启相机权限，请前往设置中开启");
        [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
            if (granted){
                mainBlock(^{
                    [self startScan];
                });
            }
        }];
    }
}

//开始扫描二维码

-(void)startScan{
    //1.创建捕捉会话,AVCaptureSession是第一个要被创建的对象，所有的操作都要基于这一个session
    self.session = [[AVCaptureSession alloc]init];
    AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];

AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device error:nil];

    [self.session addInput:input];



    //3.添加输出数据(示例对象-->类对象-->元类对象-->根元类对象)

    /*输入的类是AVCaptureInput，那么输出的类相应的就应该是AVCaptureOutput。

 输出不需要和设备挂钩,因为一般情况下，我们的输出要么是音频或视频文件，要么是一些其他的数据，像二维码扫描一般是字符串类型。

 所以创建AVCaptureOutput实例就不需要AVCaptureDevice对象。

 AVCaptureOutput也同样是一个抽象类，同样要使用其子类，在这里我们扫描二维码，

 使用的是AVCaptureMetadataOutput，设置代码如下所示*/


    AVCaptureMetadataOutput *output = [[AVCaptureMetadataOutput alloc] init];
    [output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];

    //设置能扫描的区域，这里注意，CGRectMake的x,y和width,height的值是互换位置

    output.rectOfInterest=CGRectMake(250/self.view.frame.size.height, 100/self.view.frame.size.width, (self.view.frame.size.width-200)/self.view.frame.size.width, (self.view.frame.size.width-200)/self.view.frame.size.width);

    [self.session addOutput:output];
//设置输入元数据的类型(类型是二维码,条形码数据,注意，这个一定要写在添加到session后面，不然要崩溃，如果只需要扫描二维码只需要AVMetadataObjectTypeQRCode，如果还需要扫描条形码，那么全部添加上)
    [output setMetadataObjectTypes:@[AVMetadataObjectTypeQRCode,
                                     AVMetadataObjectTypeEAN8Code,
                                     AVMetadataObjectTypeEAN13Code,
                                     AVMetadataObjectTypeCode39Code,
                                     AVMetadataObjectTypeCode39Mod43Code,
                                     AVMetadataObjectTypeCode93Code,
                                     AVMetadataObjectTypeCode128Code,
                                     AVMetadataObjectTypePDF417Code,
                                     AVMetadataObjectTypeAztecCode,
                                     AVMetadataObjectTypeUPCECode,
                                     AVMetadataObjectTypeInterleaved2of5Code,
                                     AVMetadataObjectTypeITF14Code,
                                     AVMetadataObjectTypeDataMatrixCode,
                                   ]];



    //4.添加扫描图层

    self.layer = [AVCaptureVideoPreviewLayer layerWithSession:self.session];

    self.layer.videoGravity=AVLayerVideoGravityResizeAspectFill;

    self.layer.frame = self.view.bounds;

    [self.view.layer addSublayer:self.layer];



    //5.创建view,通过layer层进行设置边框宽度和颜色,用来辅助展示扫描的区域

    UIView * cyanView=[[UIView alloc] initWithFrame:CGRectMake(100, 250, self.view.frame.size.width-200, self.view.frame.size.width-200)];

    cyanView.layer.borderWidth=2;

    cyanView.layer.borderColor =[UIColor cyanColor].CGColor;

    [self.view addSubview:cyanView];

    //6.创建检测光感源

    AVCaptureVideoDataOutput *guangOutPut = [[AVCaptureVideoDataOutput alloc] init];

    [guangOutPut setSampleBufferDelegate:self queue:dispatch_get_main_queue()];

    //设置为高质量采集率

    [self.session setSessionPreset:AVCaptureSessionPresetHigh];

    //把光感源添加到会话
    [self.session addOutput:guangOutPut];

//    self.lightBtn=[[UIButton alloc]initWithFrame:CGRectMake(150, cyanView.frame.origin.y+cyanView.frame.size.height+100, self.view.frame.size.width-300, self.view.frame.size.width-300)];
//
//    self.lightBtn.backgroundColor=[UIColor grayColor];
//
//    [self.lightBtn addTarget:self action:@selector(lightBtnClick:) forControlEvents:UIControlEventTouchUpInside];
//
//    [self.view addSubview:self.lightBtn];
//    self.photoBtn=[[UIButton alloc]initWithFrame:CGRectMake(100, self.lightBtn.frame.origin.y+self.lightBtn.frame.size.height+50, self.view.frame.size.width-200, 50)];
//    [self.photoBtn setTitle:@"相册" forState:UIControlStateNormal];
//    [self.photoBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
//    self.photoBtn.backgroundColor=[UIColor orangeColor];
//    [self.photoBtn addTarget:self action:@selector(photoBtnClick:) forControlEvents:UIControlEventTouchUpInside];
//    [self.view addSubview:self.photoBtn];
    //9.开始扫描
    [self.session startRunning];
}

//实现扫描的回调代理方法

- (void)captureOutput:(AVCaptureOutput*)captureOutput didOutputMetadataObjects:(NSArray*)metadataObjects fromConnection:(AVCaptureConnection*)connection{

//如果数组metadataObjects中有数据，metadataObjects是个数组类型

    if(metadataObjects.count>0) {
        
        AVMetadataMachineReadableCodeObject*object = [metadataObjects lastObject];
        
        NSLog(@"%@",object.stringValue);
        
        /*扫描到有用信息时取消扫描*/
        NSString *resStr = object.stringValue;//RK3908P1V62112465
        if ([resStr containsString:@"RK"] && (resStr.length == @"RK3908P1V62112465".length)){
            
            NSDictionary *newDict = [[NSDictionary alloc] initWithObjectsAndKeys:resStr,Const_Have_Add_Device_SN, nil];
            [HWDataManager setObjectWithKey:Const_Have_Add_Device value:newDict];
            
            [self nextStep:resStr];
            
            //停止扫描
            [self.session stopRunning];
            
            //移除扫描层layer
            [self.layer removeFromSuperlayer];
        }
    }else{
        
        NSLog(@"没有扫描到数据");
        
    }
}

- (void)nextStep:(NSString *)sn{
    /*下一步*/
    GuideViewController *nextVC = [[GuideViewController alloc] init];
    nextVC.sn = sn;
    
    [self.navigationController pushViewController:nextVC animated:YES];
}

//光感传感器代理
-(void)captureOutput:(AVCaptureOutput*)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection*)connection{

    //获取光线的值

    CFDictionaryRef metadataDict = CMCopyDictionaryOfAttachments(NULL,sampleBuffer, kCMAttachmentMode_ShouldPropagate);

    NSDictionary *metadata = [[NSMutableDictionary alloc] initWithDictionary:(__bridge NSDictionary*)metadataDict];

    CFRelease(metadataDict);

    NSDictionary *exifMetadata = [[metadata objectForKey:(NSString *)kCGImagePropertyExifDictionary] mutableCopy];

    float brightnessValue = [[exifMetadata objectForKey:(NSString*)kCGImagePropertyExifBrightnessValue]floatValue];

    NSLog(@"%f",brightnessValue);


    // 根据brightnessValue的值来打开和关闭闪光灯，一般值小于0就需要打开，大于0就关闭

//    if((brightnessValue <0)) {//显示闪光灯
//        self.lightBtn.hidden=NO;
//    }else if((brightnessValue >0)) {//隐藏闪光灯
//        self.lightBtn.hidden=YES;
//    }
}

////闪光灯按钮点击方法
//
//-(void)lightBtnClick:(UIButton*)sender{
//    //判断当前设备是否有闪光灯
//
//    AVCaptureDevice * device=[AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
//
//    BOOL result=[device hasTorch];
//
//    if(result==YES){
//        if(self.lightBtn.isSelected==NO){
//            self.lightBtn.selected=YES;
//            self.lightBtn.backgroundColor=[UIColor greenColor];
//            [device lockForConfiguration:nil];
//            [device setTorchMode: AVCaptureTorchModeOn];//开
//            [device unlockForConfiguration];
//        }else if(self.lightBtn.isSelected==YES){
//            self.lightBtn.selected=NO;
//            self.lightBtn.backgroundColor=[UIColor grayColor];
//            [device lockForConfiguration:nil];
//            [device setTorchMode: AVCaptureTorchModeOff];//关
//            [device unlockForConfiguration];
//        }
//    }else{
//        NSLog(@"当前设备闪光灯不可用");
//    }
//}
//
////获取相册图片btn点击方法
//
//-(void)photoBtnClick:(UIButton*)sender{
//    UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
//    imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
//    // imagePicker.allowsEditing = YES;
//    imagePicker.delegate=self;
//    [self.navigationController presentViewController:imagePicker animated:YES completion:nil];
//}

//UIImagePickerControllerDelegate选择图片的回调

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<UIImagePickerControllerInfoKey,id> *)info {
    //把UIimage类型转换成CIimage类型
    UIImage *pickedImage = info[UIImagePickerControllerEditedImage] ?: info[UIImagePickerControllerOriginalImage];
    CIImage*detectImage = [CIImage imageWithData:UIImagePNGRepresentation(pickedImage)];
    //解析扫描二维码结果字符串
    CIDetector *detector = [CIDetector detectorOfType:CIDetectorTypeQRCode context:nil options:@{CIDetectorAccuracy: CIDetectorAccuracyLow}];
    CIQRCodeFeature*feature = (CIQRCodeFeature*)[detector featuresInImage:detectImage options:nil].firstObject;
    [picker dismissViewControllerAnimated:YES completion:^{
        if(feature.messageString) {
            NSLog(@"=================二维码结果为%@",feature.messageString);
        }else{
            NSLog(@"未扫描到相应二维码");
        }
        //停止会话对象扫描
        [self.session stopRunning];
        //移除扫描层layer
        [self.layer removeFromSuperlayer];
    }];
}

@end