BarcodeScannerController.h

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#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
#import "BarCodeCB.h"
#import "KeypadInputController.h"
//#import "ZBarImageScanner.h"

/* whether we are using an actual device or not. Simulator doesn't have the AVFoundation libraries for camera */
#if !TARGET_OS_EMBEDDED
    #define SIMULATOR_COMPILATION 1
#else
    #define SIMULATOR_COMPILATION 0
#endif

#if (SIMULATOR_COMPILATION || __IPHONE_OS_VERSION_MAX_ALLOWED < 40000)  
    #define CAN_USE_AVCAPTURE  0    
#else
    #define CAN_USE_AVCAPTURE 1
#endif

@class BarcodeScannerController;
@class ZBarImageScanner;
@class ZBarSymbol;

@protocol BarcodeScannerControllerDelegate <UINavigationControllerDelegate, UIImagePickerControllerDelegate>
- (void)barcodeScannerController:(BarcodeScannerController*)self didFinishScanning:(BarCodeCB *)result;
@end

#if CAN_USE_AVCAPTURE == 0
@interface BarcodeScannerController : UIViewController
<KeypadInputControllerDelegate>
#else

@interface BarcodeScannerController : UIViewController
<KeypadInputControllerDelegate, AVCaptureVideoDataOutputSampleBufferDelegate>
#endif
{
    BarCodeCB *readerCB;
    NSTimer *timer;
    NSString *codes[10];
    int codeIndex;
    BOOL isVertical;
    UIView *originalView;
    BOOL cameraActive;
    UIToolbar *toolBar;
    UIButton *cancelButton;
    UIImageView *scanView;
    UIImageView *lensCover;
    UITextField *textField;
    KeypadInputController *vwKeypadInput;
    UISegmentedControl *toggleCamera;
    UIBarButtonItem *segmentButton;
    UIView *keypadView;
    NSString *currentValue;
    id<BarcodeScannerControllerDelegate> __weak delegate;
    CGRect scanCrop;
    ZBarImageScanner *scanner;
    NSInteger maxScanDimension;
    ZBarSymbol *symbol;
    CALayer *boxLayer;
    UIView *boxView;
    BOOL scanSuccess;
    BOOL isOS4Available;
    BOOL statusBarHidden;
    CGRect customFrame;
    
#if CAN_USE_AVCAPTURE
    AVCaptureSession *session;
    AVCaptureVideoDataOutput *captureOutput;
    AVCaptureDeviceInput *captureInput;
    AVCaptureDevice *device;
    AVCaptureVideoPreviewLayer *prevLayer; 
#endif  
}

@property(nonatomic,weak) id<BarcodeScannerControllerDelegate> delegate;
@property(nonatomic, copy) NSString *currentValue;
@property CGRect customFrame;

#if CAN_USE_AVCAPTURE
// access to configure image scanner
@property (readonly, nonatomic) ZBarImageScanner *scanner;
#endif  

- (void) cancelScan;

+ (BOOL) isAvailable;

@end