Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/zxing-cpp/wrappers/ios/Sources/Wrapper/Reader/ZXIBarcodeReader.mm @ 17:dd9cdb856310

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Remove PKG-INFO from the because it is regenerated automatically for the sdist
author Franz Glasner <fzglas.hg@dom66.de>
date Thu, 18 Sep 2025 17:40:40 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 // Copyright 2022 KURZ Digital Solutions GmbH
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2 //
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3 // SPDX-License-Identifier: Apache-2.0
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4
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5 #import "ZXIBarcodeReader.h"
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6 #import "ReadBarcode.h"
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7 #import "ImageView.h"
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8 #import "Barcode.h"
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9 #import "GTIN.h"
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10 #import "ZXIFormatHelper.h"
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11 #import "ZXIPosition+Helper.h"
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12 #import "ZXIErrors.h"
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13
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14 using namespace ZXing;
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15
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16 NSString *stringToNSString(const std::string &text) {
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17 return [[NSString alloc]initWithBytes:text.data() length:text.size() encoding:NSUTF8StringEncoding];
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18 }
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20 ZXIGTIN *getGTIN(const Result &result) {
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21 try {
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22 auto country = GTIN::LookupCountryIdentifier(result.text(TextMode::Plain), result.format());
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23 auto addOn = GTIN::EanAddOn(result);
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24 return country.empty()
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25 ? nullptr
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26 : [[ZXIGTIN alloc]initWithCountry:stringToNSString(country)
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27 addOn:stringToNSString(addOn)
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28 price:stringToNSString(GTIN::Price(addOn))
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29 issueNumber:stringToNSString(GTIN::IssueNr(addOn))];
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30 } catch (std::exception e) {
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31 // Because invalid GTIN data can lead to exceptions, in which case
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32 // we don't want to discard the whole result.
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33 return nullptr;
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34 }
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35 }
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36
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37 @interface ZXIReaderOptions()
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38 @property(nonatomic) ZXing::ReaderOptions cppOpts;
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39 @end
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41 @interface ZXIBarcodeReader()
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42 @property (nonatomic, strong) CIContext* ciContext;
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43 @end
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44
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45 @implementation ZXIBarcodeReader
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46
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47 - (instancetype)init {
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48 return [self initWithOptions: [[ZXIReaderOptions alloc] init]];
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49 }
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51 - (instancetype)initWithOptions:(ZXIReaderOptions*)options{
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52 self = [super init];
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53 self.ciContext = [[CIContext alloc] initWithOptions:@{kCIContextWorkingColorSpace: [NSNull new]}];
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54 self.options = options;
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55 return self;
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56 }
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57
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58 - (NSArray<ZXIResult *> *)readCVPixelBuffer:(nonnull CVPixelBufferRef)pixelBuffer
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59 error:(NSError *__autoreleasing _Nullable *)error {
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60 OSType pixelFormat = CVPixelBufferGetPixelFormatType(pixelBuffer);
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61
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62 // We tried to work with all luminance based formats listed in kCVPixelFormatType
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63 // but only the following ones seem to be supported on iOS.
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64 switch (pixelFormat) {
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65 case kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange:
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66 case kCVPixelFormatType_420YpCbCr8BiPlanarFullRange:
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67 NSInteger cols = CVPixelBufferGetWidth(pixelBuffer);
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68 NSInteger rows = CVPixelBufferGetHeight(pixelBuffer);
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69 NSInteger bytesPerRow = CVPixelBufferGetBytesPerRowOfPlane(pixelBuffer, 0);
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70 CVPixelBufferLockBaseAddress(pixelBuffer, kCVPixelBufferLock_ReadOnly);
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71 const uint8_t * bytes = static_cast<const uint8_t *>(CVPixelBufferGetBaseAddressOfPlane(pixelBuffer, 0));
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72 ImageView imageView = ImageView(
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73 static_cast<const uint8_t *>(bytes),
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74 static_cast<int>(cols),
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75 static_cast<int>(rows),
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76 ImageFormat::Lum,
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77 static_cast<int>(bytesPerRow),
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78 0);
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79 NSArray* results = [self readImageView:imageView error:error];
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80 CVPixelBufferUnlockBaseAddress(pixelBuffer, kCVPixelBufferLock_ReadOnly);
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81 return results;
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82 }
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83
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84 // If given pixel format is not a supported type with a luminance channel we just use the
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85 // default method
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86 return [self readCIImage:[[CIImage alloc] initWithCVImageBuffer:pixelBuffer] error:error];
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87 }
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88
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89 - (NSArray<ZXIResult *> *)readCIImage:(nonnull CIImage *)image
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90 error:(NSError *__autoreleasing _Nullable *)error {
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91 CGImageRef cgImage = [self.ciContext createCGImage:image fromRect:image.extent];
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92 auto results = [self readCGImage:cgImage error:error];
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93 CGImageRelease(cgImage);
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94 return results;
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95 }
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96
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97 - (NSArray<ZXIResult *> *)readCGImage:(nonnull CGImageRef)image
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98 error:(NSError *__autoreleasing _Nullable *)error {
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99 CGFloat cols = CGImageGetWidth(image);
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100 CGFloat rows = CGImageGetHeight(image);
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101 NSMutableData *data = [NSMutableData dataWithLength: cols * rows];
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102
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103 CGColorSpaceRef colorSpace = CGColorSpaceCreateWithName(kCGColorSpaceGenericGray);
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104 CGContextRef contextRef = CGBitmapContextCreate(data.mutableBytes,// Pointer to backing data
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105 cols, // Width of bitmap
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106 rows, // Height of bitmap
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107 8, // Bits per component
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108 cols, // Bytes per row
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109 colorSpace, // Colorspace
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110 kCGBitmapByteOrderDefault); // Bitmap info flags
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111 CGColorSpaceRelease(colorSpace);
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112 CGContextDrawImage(contextRef, CGRectMake(0, 0, cols, rows), image);
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113 CGContextRelease(contextRef);
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114
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115 ImageView imageView = ImageView(
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116 static_cast<const uint8_t *>(data.bytes),
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117 static_cast<int>(cols),
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118 static_cast<int>(rows),
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119 ImageFormat::Lum);
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120 return [self readImageView:imageView error:error];
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121 }
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122
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123 - (NSArray<ZXIResult*> *)readImageView:(ImageView)imageView
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124 error:(NSError *__autoreleasing _Nullable *)error {
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125 try {
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126 Barcodes results = ReadBarcodes(imageView, self.options.cppOpts);
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127 NSMutableArray* zxiResults = [NSMutableArray array];
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128 for (auto result: results) {
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129 [zxiResults addObject:
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130 [[ZXIResult alloc] init:stringToNSString(result.text())
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131 format:ZXIFormatFromBarcodeFormat(result.format())
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132 bytes:[[NSData alloc] initWithBytes:result.bytes().data() length:result.bytes().size()]
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133 position:[[ZXIPosition alloc]initWithPosition: result.position()]
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134 orientation:result.orientation()
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135 ecLevel:stringToNSString(result.ecLevel())
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136 symbologyIdentifier:stringToNSString(result.symbologyIdentifier())
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137 sequenceSize:result.sequenceSize()
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138 sequenceIndex:result.sequenceIndex()
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139 sequenceId:stringToNSString(result.sequenceId())
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140 readerInit:result.readerInit()
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141 lineCount:result.lineCount()
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142 gtin:getGTIN(result)]
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143 ];
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144 }
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145 return zxiResults;
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146 } catch(std::exception &e) {
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147 SetNSError(error, ZXIReaderError, e.what());
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148 return nil;
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149 } catch (...) {
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150 SetNSError(error, ZXIReaderError, "An unknown error occurred");
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151 return nil;
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152 }
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153 }
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154
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155 @end