LBXScanWrapper.m

//
//  LBXScanWrapper.m
//
//
//  Created by lbxia on 15/3/4.
//  Copyright (c) 2015年 lbxia. All rights reserved.
//

#import "LBXScanWrapper.h"
#import "LBXScanNative.h"
#import "ZXingWrapper.h"
#import "ZXBarcodeFormat.h"
#import <AssetsLibrary/AssetsLibrary.h>
#import <Photos/Photos.h>

@interface LBXScanWrapper()
{
    
}

//ios7之后native封装
@property(nonatomic,strong)LBXScanNative* scanNativeObj;

//ZXing封装
@property(nonatomic,strong)ZXingWrapper *scanZXingObj;

/**
 @brief  扫码类型
 */
@property(nonatomic,strong)NSArray* arrayBarCodeType;

//是否指定使用ZXing库
@property(nonatomic,assign)BOOL isUseZXingLib;


@end


@implementation LBXScanWrapper


+ (BOOL)isSysIos7Later
{
   // return NO;
    
     if([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0)
         return YES;
    return NO;
}

+ (BOOL)isSysIos8Later
{
    // return NO;
    
    if([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
        return YES;
    return NO;
}

- (void)setNeedCaptureImage:(BOOL)isNeedCaputureImg
{
    if (_scanNativeObj) {
        [_scanNativeObj setNeedCaptureImage:isNeedCaputureImg];
    }
}

- (instancetype)initWithPreView:(UIView*)preView ArrayObjectType:(NSArray*)arrayBarCodeType cropRect:(CGRect)cropRect
              success:(void(^)(NSArray<LBXScanResult*> *array))blockScanResult
{
    if (self = [super init])
    {
        self.isUseZXingLib = NO;
        
        self.arrayBarCodeType = arrayBarCodeType;
        
        
        CGRect frame = preView.frame;
        frame.origin = CGPointZero;
       
        if ( [LBXScanWrapper isSysIos7Later] )
        {
            _scanNativeObj = [[LBXScanNative alloc]initWithPreView:preView ObjectType:arrayBarCodeType cropRect:cropRect success:^(NSArray<LBXScanResult*> *array) {
                
                if (blockScanResult)
                {
                    blockScanResult(array);
                }
            }];
            
        }
        else
        {
            _scanZXingObj = [[ZXingWrapper alloc]initWithPreView:preView block:^(ZXBarcodeFormat barcodeFormat, NSString *str, UIImage *scanImg) {
                
                //TODO:ZXing统一识别所有的码
                if ( blockScanResult )
                {
                    NSString *barCodeType = [LBXScanWrapper convertZXBarcodeFormat:barcodeFormat];
                    
                    LBXScanResult *result = [[LBXScanResult alloc]initWithScanString:str imgScan:scanImg barCodeType:barCodeType];
                    
                    blockScanResult(@[result]);
                }
            }];

        }

    }
    
    return self;
}



/**
 @brief  初始化相机，并指定使用ZXing库识别各种码
 @param preView         视频显示View
 @param blockScanResult 返回结果
 @return LBXScanVendor
 */
- (instancetype)initZXingWithPreView:(UIView *)preView success:(void(^)(NSArray<LBXScanResult*> *array))blockScanResult
{
    if (self = [super init])
    {
        self.isUseZXingLib = YES;
        
        _scanZXingObj = [[ZXingWrapper alloc]initWithPreView:preView block:^(ZXBarcodeFormat barcodeFormat, NSString *str, UIImage *scanImg) {
            
            NSString *barCodeType = [LBXScanWrapper convertZXBarcodeFormat:barcodeFormat];
            
            if (blockScanResult) {
                blockScanResult(@[str,scanImg,barCodeType]);
            }            
        }];
    }
    
    return self;
}



/*!
 *  开始扫码
 */
- (void)startScan
{
    
    if ( [LBXScanWrapper isSysIos7Later] && !_isUseZXingLib )
        [_scanNativeObj startScan];
    else
        [_scanZXingObj start];
}

/*!
 *  停止扫码
 */
- (void)stopScan
{
    if ( [LBXScanWrapper isSysIos7Later] && !_isUseZXingLib )
        [_scanNativeObj stopScan];
    else
        [_scanZXingObj stop];    
}

- (void)openFlash:(BOOL)bOpen
{
    
   AVCaptureDevice *device =  [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    
     if ([device hasTorch] && [device hasFlash])
     {
         if ([LBXScanWrapper isSysIos7Later] && !_isUseZXingLib )
             [_scanNativeObj setTorch:bOpen];
         else
             [_scanZXingObj openTorch:bOpen];
     }
   
}

- (void)openOrCloseFlash
{
    AVCaptureDevice *device =  [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    
    if ([device hasTorch] && [device hasFlash])
    {
        if ([LBXScanWrapper isSysIos7Later] && !_isUseZXingLib )
            [_scanNativeObj changeTorch];
        else
            [_scanZXingObj openOrCloseTorch];
    }

  
}

/*!
 *  修改扫码类型
 *
 *  @param objType 扫码类型
 */
- (void)changeScanObjType:(NSArray*)objType
{
    if ( [LBXScanWrapper isSysIos7Later] && !_isUseZXingLib )
    {
        [_scanNativeObj changeScanType:objType];
    }
}






//识别图片上的二维码

/*!
 *  识别各种码图片
 *
 *  @param image 图像
 *  @param block 返回识别结果
 */
+ (void)recognizeImage:(UIImage*)image success:(void(^)(NSArray<LBXScanResult*> *array))block;
{    
    __block UIImage* tmpImg = image;
    
    [ZXingWrapper recognizeImage:image block:^(ZXBarcodeFormat barCodeFormat,NSString* str)
     {
         NSString *barCodeType = [LBXScanWrapper convertZXBarcodeFormat:barCodeFormat];
         
         if (block) {
             
             LBXScanResult *result = [[LBXScanResult alloc]initWithScanString:str imgScan:tmpImg barCodeType:barCodeType];
             block(@[result]);
         }
         
     }];
}







#pragma mark- 震动、声音效果

#define SOUNDID  1109  //1012 -iphone   1152 ipad  1109 ipad
+ (void)systemVibrate
{
    AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
}

+ (void)systemSound
{
    AudioServicesPlaySystemSound(SOUNDID);
}


#pragma mark -相机、相册权限
+ (BOOL)isGetCameraPermission
{
    BOOL isCameraValid = YES;
    //ios7之前系统默认拥有权限
    if([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0)
    {
        AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
        
        if (authStatus == AVAuthorizationStatusDenied)
        {
            isCameraValid = NO;
        }
    }
    return isCameraValid;
}


+ (BOOL)isGetPhotoPermission
{
    if ([[[UIDevice currentDevice] systemVersion] floatValue] < 8.0)
    {
        ALAuthorizationStatus author = [ALAssetsLibrary authorizationStatus];
        
        if ( author == ALAuthorizationStatusDenied ) {
            
            return NO;
        }
        return YES;
    }
    
    PHAuthorizationStatus authorStatus = [PHPhotoLibrary authorizationStatus];
    if ( authorStatus == PHAuthorizationStatusDenied ) {
        
        return NO;
    }
    return YES;
}


+ (NSString*)convertZXBarcodeFormat:(ZXBarcodeFormat)barCodeFormat
{
    NSString *strAVMetadataObjectType = nil;
    
    switch (barCodeFormat) {
        case kBarcodeFormatQRCode:
            strAVMetadataObjectType = AVMetadataObjectTypeQRCode;
            break;
        case kBarcodeFormatEan13:
            strAVMetadataObjectType = AVMetadataObjectTypeEAN13Code;
            break;
        case kBarcodeFormatEan8:
            strAVMetadataObjectType = AVMetadataObjectTypeEAN8Code;
            break;
        case kBarcodeFormatPDF417:
            strAVMetadataObjectType = AVMetadataObjectTypePDF417Code;
            break;
        case kBarcodeFormatAztec:
            strAVMetadataObjectType = AVMetadataObjectTypeAztecCode;
            break;
        case kBarcodeFormatCode39:
            strAVMetadataObjectType = AVMetadataObjectTypeCode39Code;
            break;
        case kBarcodeFormatCode93:
            strAVMetadataObjectType = AVMetadataObjectTypeCode93Code;
            break;
        case kBarcodeFormatCode128:
            strAVMetadataObjectType = AVMetadataObjectTypeCode128Code;
            break;
        case kBarcodeFormatDataMatrix:
            strAVMetadataObjectType = AVMetadataObjectTypeDataMatrixCode;
            break;
        case kBarcodeFormatITF:
            strAVMetadataObjectType = AVMetadataObjectTypeITF14Code;
            break;
        case kBarcodeFormatRSS14:
            break;
        case kBarcodeFormatRSSExpanded:
            break;
        case kBarcodeFormatUPCA:
            break;
        case kBarcodeFormatUPCE:
            strAVMetadataObjectType = AVMetadataObjectTypeUPCECode;
            break;
        default:
            break;
    }
    
    
    return strAVMetadataObjectType;
}

+ (ZXBarcodeFormat)convertCodeFomratToZXBarcodeFormat:(NSString*)strCodeType
{
    
    if ([strCodeType isEqualToString:AVMetadataObjectTypeQRCode])
    {
        return kBarcodeFormatQRCode;
    }
    
    if ([strCodeType isEqualToString:AVMetadataObjectTypeEAN13Code])
    {
        return kBarcodeFormatEan13;
    }
    
    if ([strCodeType isEqualToString:AVMetadataObjectTypeEAN8Code])
    {
        return kBarcodeFormatEan8;
    }
    
    if ([strCodeType isEqualToString:AVMetadataObjectTypePDF417Code])
    {
        return kBarcodeFormatPDF417;
    }
    
    if ([strCodeType isEqualToString:AVMetadataObjectTypeAztecCode])
    {
        return kBarcodeFormatAztec;
    }
    
    
    if ([strCodeType isEqualToString:AVMetadataObjectTypeCode39Code])
    {
        return kBarcodeFormatCode39;
    }
    
    if ([strCodeType isEqualToString:AVMetadataObjectTypeCode93Code])
    {
        return kBarcodeFormatCode93;
    }

    //支付宝付款码条形码格式
    if ([strCodeType isEqualToString:AVMetadataObjectTypeCode128Code])
    {
        return kBarcodeFormatCode128;
    }
    
    if ([strCodeType isEqualToString:AVMetadataObjectTypeDataMatrixCode])
    {
        return kBarcodeFormatDataMatrix;
    }
    
    if ([strCodeType isEqualToString:AVMetadataObjectTypeUPCECode])
    {
        return kBarcodeFormatUPCE;
    }
    
    return kBarcodeFormatQRCode;
}




#pragma mark -生成二维码

/*!
 *  生成二维码
 *
 *  @param str  二维码字符串
 *  @param size 二维码图片大小
 *
 *  @return 返回生成的图像
 */
+ (UIImage*)createQRWithString:(NSString*)str size:(CGSize)size
{
    if ([LBXScanWrapper isSysIos7Later]) {
        
        return [LBXScanWrapper createNonInterpolatedUIImageFormCIImage:[LBXScanWrapper createQRForString:str] withSize:size.width];
    }
    else
        return  [ZXingWrapper createCodeWithString:str size:size CodeFomart:kBarcodeFormatQRCode];
}


+ (UIImage*)createCodeWithString:(NSString*)str size:(CGSize)size CodeFomart:(NSString*)format
{
    ZXBarcodeFormat zxformat = [LBXScanWrapper convertCodeFomratToZXBarcodeFormat:format];
    
    return  [ZXingWrapper createCodeWithString:str size:size CodeFomart:zxformat];
}



/**
 @brief  图像中间加logo图片
 @param srcImg    原图像
 @param LogoImage logo图像
 @param logoSize  logo图像尺寸
 @return 加Logo的图像
 */
+ (UIImage*)addImageLogo:(UIImage*)srcImg centerLogoImage:(UIImage*)LogoImage logoSize:(CGSize)logoSize
{
    //UIGraphicsBeginImageContext(srcImg.size);
    
    UIGraphicsBeginImageContextWithOptions(srcImg.size, NO, [[UIScreen mainScreen] scale]);
    
    [srcImg drawInRect:CGRectMake(0, 0, srcImg.size.width, srcImg.size.height)];
    
    CGRect rect = CGRectMake(srcImg.size.width/2 - logoSize.width/2, srcImg.size.height/2-logoSize.height/2, logoSize.width, logoSize.height);
    [LogoImage drawInRect:rect];
    UIImage *resultingImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return resultingImage;
}


/**
 *  通过UIImageView形式添加Logo
 *
 *  @param srcImgView 显示二维码的UIImageView
 *  @param logoView   logo的UIImageView
 *  @param logoSize   logo大小
 */
+ (void)addImageViewLogo:(UIImageView*)srcImgView centerLogoImageView:(UIImageView*)logoView logoSize:(CGSize)logoSize
{    
    logoView.center = srcImgView.center;
    logoView.bounds = CGRectMake(0, 0, logoSize.width, logoSize.height);
    [srcImgView addSubview:logoView];
}

#pragma mark --UIImage 圆角

+ (UIImage *)roundedCornerImageWithCornerRadius:(CGFloat)cornerRadius  srcImg:(UIImage*)srcImg
{
    CGFloat w = srcImg.size.width;
    CGFloat h = srcImg.size.height;
    CGFloat scale = [UIScreen mainScreen].scale;
    // 防止圆角半径小于0，或者大于宽/高中较小值的一半。
    if (cornerRadius < 0)
        cornerRadius = 0;
    else if (cornerRadius > MIN(w, h))
        cornerRadius = MIN(w, h) / 2.;
    
    UIImage *image = nil;
    CGRect imageFrame = CGRectMake(0., 0., w, h);
    UIGraphicsBeginImageContextWithOptions(srcImg.size, NO, scale);
    [[UIBezierPath bezierPathWithRoundedRect:imageFrame cornerRadius:cornerRadius] addClip];
    [srcImg drawInRect:imageFrame];
    image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    
    return image;
}


//下面引用自 https://github.com/yourtion/Demo_CustomQRCode
#pragma mark - InterpolatedUIImage
+ (UIImage *)createNonInterpolatedUIImageFormCIImage:(CIImage *)image withSize:(CGFloat) size {
    CGRect extent = CGRectIntegral(image.extent);
    CGFloat scale = MIN(size/CGRectGetWidth(extent), size/CGRectGetHeight(extent));
    // 创建bitmap;
    size_t width = CGRectGetWidth(extent) * scale;
    size_t height = CGRectGetHeight(extent) * scale;
    CGColorSpaceRef cs = CGColorSpaceCreateDeviceGray();
    CGContextRef bitmapRef = CGBitmapContextCreate(nil, width, height, 8, 0, cs, (CGBitmapInfo)kCGImageAlphaNone);
    CGColorSpaceRelease(cs);
    CIContext *context = [CIContext contextWithOptions:nil];
    CGImageRef bitmapImage = [context createCGImage:image fromRect:extent];
    CGContextSetInterpolationQuality(bitmapRef, kCGInterpolationNone);
    CGContextScaleCTM(bitmapRef, scale, scale);
    CGContextDrawImage(bitmapRef, extent, bitmapImage);
    // 保存bitmap到图片
    CGImageRef scaledImage = CGBitmapContextCreateImage(bitmapRef);
    CGContextRelease(bitmapRef);
    CGImageRelease(bitmapImage);
    UIImage *aImage = [UIImage imageWithCGImage:scaledImage];
    CGImageRelease(scaledImage);
    return aImage;
}

#pragma mark - QRCodeGenerator
+ (CIImage *)createQRForString:(NSString *)qrString {
    NSData *stringData = [qrString dataUsingEncoding:NSUTF8StringEncoding];
    // 创建filter
    CIFilter *qrFilter = [CIFilter filterWithName:@"CIQRCodeGenerator"];
    // 设置内容和纠错级别
    [qrFilter setValue:stringData forKey:@"inputMessage"];
    [qrFilter setValue:@"H" forKey:@"inputCorrectionLevel"];
    // 返回CIImage
    return qrFilter.outputImage;
}

#pragma mark - imageToTransparent
void ProviderReleaseData (void *info, const void *data, size_t size){
    free((void*)data);
}
+ (UIImage*)imageBlackToTransparent:(UIImage*)image withRed:(CGFloat)red andGreen:(CGFloat)green andBlue:(CGFloat)blue{
    const int imageWidth = image.size.width;
    const int imageHeight = image.size.height;
    size_t      bytesPerRow = imageWidth * 4;
    uint32_t* rgbImageBuf = (uint32_t*)malloc(bytesPerRow * imageHeight);
    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
    CGContextRef context = CGBitmapContextCreate(rgbImageBuf, imageWidth, imageHeight, 8, bytesPerRow, colorSpace,
                                                 kCGBitmapByteOrder32Little | kCGImageAlphaNoneSkipLast);
    CGContextDrawImage(context, CGRectMake(0, 0, imageWidth, imageHeight), image.CGImage);
    // 遍历像素
    int pixelNum = imageWidth * imageHeight;
    uint32_t* pCurPtr = rgbImageBuf;
    for (int i = 0; i < pixelNum; i++, pCurPtr++){
        if ((*pCurPtr & 0xFFFFFF00) < 0x99999900)    // 将白色变成透明
        {
            // 改成下面的代码，会将图片转成想要的颜色
            uint8_t* ptr = (uint8_t*)pCurPtr;
            ptr[3] = red; //0~255
            ptr[2] = green;
            ptr[1] = blue;
        }
        else
        {
            uint8_t* ptr = (uint8_t*)pCurPtr;
            ptr[0] = 0;
        }
    }
    // 输出图片
    CGDataProviderRef dataProvider = CGDataProviderCreateWithData(NULL, rgbImageBuf, bytesPerRow * imageHeight, ProviderReleaseData);
    CGImageRef imageRef = CGImageCreate(imageWidth, imageHeight, 8, 32, bytesPerRow, colorSpace,
                                        kCGImageAlphaLast | kCGBitmapByteOrder32Little, dataProvider,
                                        NULL, true, kCGRenderingIntentDefault);
    CGDataProviderRelease(dataProvider);
    UIImage* resultUIImage = [UIImage imageWithCGImage:imageRef];
    // 清理空间
    CGImageRelease(imageRef);
    CGContextRelease(context);
    CGColorSpaceRelease(colorSpace);
    return resultUIImage;
}

#pragma mark - 生成二维码，背景色及二维码颜色设置
//引用自:http://www.jianshu.com/p/e8f7a257b612
+ (UIImage*)createQRWithString:(NSString*)text QRSize:(CGSize)size QRColor:(UIColor*)qrColor bkColor:(UIColor*)bkColor
{
    
    NSData *stringData = [text dataUsingEncoding: NSUTF8StringEncoding];
    
    //生成
    CIFilter *qrFilter = [CIFilter filterWithName:@"CIQRCodeGenerator"];
    [qrFilter setValue:stringData forKey:@"inputMessage"];
    [qrFilter setValue:@"H" forKey:@"inputCorrectionLevel"];
    
    
    //上色
    CIFilter *colorFilter = [CIFilter filterWithName:@"CIFalseColor"
                                       keysAndValues:
                             @"inputImage",qrFilter.outputImage,
                             @"inputColor0",[CIColor colorWithCGColor:qrColor.CGColor],
                             @"inputColor1",[CIColor colorWithCGColor:bkColor.CGColor],
                             nil];
    
    CIImage *qrImage = colorFilter.outputImage;
    
    //绘制
    CGImageRef cgImage = [[CIContext contextWithOptions:nil] createCGImage:qrImage fromRect:qrImage.extent];
    UIGraphicsBeginImageContext(size);
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetInterpolationQuality(context, kCGInterpolationNone);
    CGContextScaleCTM(context, 1.0, -1.0);
    CGContextDrawImage(context, CGContextGetClipBoundingBox(context), cgImage);
    UIImage *codeImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    
    CGImageRelease(cgImage);
    
    return codeImage;
}



/**
 @brief 获取摄像机最大拉远镜头
 @return 放大系数
 */
- (CGFloat)getVideoMaxScale
{
    if (self.scanNativeObj) {
       return [self.scanNativeObj getVideoMaxScale];
    }
    
    return 1.0;
}

/**
 @brief 拉近拉远镜头
 @param scale 系数
 */
- (void)setVideoScale:(CGFloat)scale
{
    if (self.scanNativeObj) {
        [self.scanNativeObj setVideoScale:scale];
    }
}


@end