// // ScannerViewController.m // Lighting // // Created by 曹云霄 on 16/5/18. // Copyright © 2016年 上海勾芒科技有限公司. All rights reserved. // #import "ScannerViewController.h" #import @interface ScannerViewController () /** * 捕捉会话 */ @property(strong,nonatomic) AVCaptureSession *session; /** * 展示layer */ @property(strong,nonatomic) AVCaptureVideoPreviewLayer *previewLayer; /** * 展示View */ @property (weak, nonatomic) IBOutlet UIImageView *scanRectView; /** *用于记录scrollLine的上下循环状态 */ @property (assign, nonatomic) BOOL up; /** *计时器 */ @property (strong, nonatomic) CADisplayLink *link; /** * 指示线 */ @property (weak, nonatomic) IBOutlet UIImageView *instructionsLine; @end @implementation ScannerViewController - (CADisplayLink *)link { if (!_link) { _link = [CADisplayLink displayLinkWithTarget:self selector:@selector(LineAnimation)]; } return _link; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view from its nib. //计时器添加到循环中去 _up = YES; [self.link addToRunLoop:[NSRunLoop mainRunLoop] forMode:NSRunLoopCommonModes]; [self uiConfigAction]; } #pragma mark -UI - (void)uiConfigAction { // 1. 摄像头设备 AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; // 2. 设置输入 NSError *error = nil; AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error]; if (error) { NSLog(@"没有摄像头-%@", error.localizedDescription); [self ErrorMBProgressView:@"开启摄像头失败"]; return; } // 3. 设置输出(Metadata元数据) AVCaptureMetadataOutput *output = [[AVCaptureMetadataOutput alloc] init]; // 3.1 设置输出的代理 // 说明：使用主线程队列，相应比较同步，使用其他队列，相应不同步，容易让用户产生不好的体验 [output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()]; // [output setMetadataObjectsDelegate:self queue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)]; // 4. 拍摄会话 AVCaptureSession *session = [[AVCaptureSession alloc] init]; // 添加session的输入和输出 [session addInput:input]; [session addOutput:output]; //使用1080p的图像输出 session.sessionPreset = AVCaptureSessionPreset1920x1080; // 4.1 设置输出的格式 // 提示：一定要先设置会话的输出为output之后，再指定输出的元数据类型！ [output setMetadataObjectTypes:[output availableMetadataObjectTypes]]; // 5. 设置预览图层（用来让用户能够看到扫描情况） AVCaptureVideoPreviewLayer *preview = [AVCaptureVideoPreviewLayer layerWithSession:session]; // 5.1 设置preview图层的属性 preview.videoGravity = AVLayerVideoGravityResizeAspectFill; // 5.2 设置preview图层的大小 preview.frame = [UIScreen mainScreen].bounds; self.previewLayer = preview; // // UIView *view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, ScreenHeight, ScreenWidth)]; // view.transform = CGAffineTransformMakeRotation(M_PI/2); // [view.layer insertSublayer:self.previewLayer above:0]; [self.view.layer insertSublayer:self.previewLayer atIndex:0]; // // CGSize size = [UIScreen mainScreen].bounds.size; // CGRect cropRect = self.scanRectView.frame; // CGFloat p1 = size.height/size.width; // CGFloat p2 = 1920./1080.; //使用1080p的图像输出 output.rectOfInterest = CGRectMake(self.scanRectView.frame.origin.y/ScreenHeight,((ScreenWidth-self.scanRectView.frame.size.width)/2)/ScreenWidth+0.1, self.scanRectView.frame.size.height/ScreenHeight, self.scanRectView.frame.size.width/ScreenWidth); // // CGFloat fixHeight = [UIScreen mainScreen].bounds.size.width * 1920. / 1080.; // CGFloat fixPadding = (fixHeight - size.height)/2; // output.rectOfInterest = CGRectMake((cropRect.origin.y + fixPadding)/fixHeight, // cropRect.origin.x/size.width, // cropRect.size.height/fixHeight, // cropRect.size.width/size.width); NSLog(@"%@",NSStringFromCGRect(output.rectOfInterest)); // if (p1 < p2) { // CGFloat fixHeight = [UIScreen mainScreen].bounds.size.width * 1920. / 1080.; // CGFloat fixPadding = (fixHeight - size.height)/2; // output.rectOfInterest = CGRectMake((cropRect.origin.y + fixPadding)/fixHeight, // cropRect.origin.x/size.width, // cropRect.size.height/fixHeight, // cropRect.size.width/size.width); // } else { // CGFloat fixWidth = [UIScreen mainScreen].bounds.size.height * 1080. / 1920.; // CGFloat fixPadding = (fixWidth - size.width)/2; // output.rectOfInterest = CGRectMake(cropRect.origin.y/size.height, // (cropRect.origin.x + fixPadding)/fixWidth, // cropRect.size.height/size.height, // cropRect.size.width/fixWidth); // } self.session = session; [self.session startRunning]; } #pragma mark - delegate - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection { if (metadataObjects.count > 0) { AVMetadataMachineReadableCodeObject *obj = metadataObjects[0]; [self.session stopRunning]; //扫描结果 if (self.ReturnScannerResponse) { self.ReturnScannerResponse(obj.stringValue); } } } #pragma mark - 线条运动的动画 - (void)LineAnimation { if (_up == YES) { CGFloat y = self.instructionsLine.frame.origin.y; y += 2; CGRect frame = self.instructionsLine.frame; frame.origin.y = y; self.instructionsLine.frame = frame; if (y >= self.scanRectView.frame.origin.y + self.scanRectView.frame.size.height-20) { _up = NO; } }else{ CGFloat y = self.instructionsLine.frame.origin.y; y -= 2; CGRect frame = self.instructionsLine.frame; frame.origin.y = y; self.instructionsLine.frame = frame;; if (y <= self.scanRectView.frame.origin.y+20) { _up = YES; } } } #pragma amrk -取消扫描 - (IBAction)cancelButtonClick:(UIButton *)sender { [self.session stopRunning]; [self dismissViewControllerAnimated:YES completion:nil]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } /* #pragma mark - Navigation // In a storyboard-based application, you will often want to do a little preparation before navigation - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { // Get the new view controller using [segue destinationViewController]. // Pass the selected object to the new view controller. } */ @end