ZBarSDK is an open source SDK, can be downloaded from here to the source, the SDK to achieve the recognition and reading all kinds of bar codes, including EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39, Interleaved 2 of 5 and QR Code.

ZBarSDK
.......\.DS_Store
__MACOSX
........\ZBarSDK
........\.......\._.DS_Store
ZBarSDK\Headers
.......\.......\.DS_Store
__MACOSX\ZBarSDK\Headers
........\.......\.......\._.DS_Store
ZBarSDK\Headers\ZBarSDK
.......\.......\.......\.DS_Store
__MACOSX\ZBarSDK\Headers\ZBarSDK
........\.......\.......\.......\._.DS_Store
ZBarSDK\Headers\ZBarSDK\zbar
.......\.......\.......\....\Decoder.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\zbar
........\.......\.......\.......\....\._Decoder.h
ZBarSDK\Headers\ZBarSDK\zbar\Exception.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\zbar\._Exception.h
ZBarSDK\Headers\ZBarSDK\zbar\Image.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\zbar\._Image.h
ZBarSDK\Headers\ZBarSDK\zbar\ImageScanner.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\zbar\._ImageScanner.h
ZBarSDK\Headers\ZBarSDK\zbar\Processor.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\zbar\._Processor.h
ZBarSDK\Headers\ZBarSDK\zbar\Scanner.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\zbar\._Scanner.h
ZBarSDK\Headers\ZBarSDK\zbar\Symbol.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\zbar\._Symbol.h
ZBarSDK\Headers\ZBarSDK\zbar\Video.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\zbar\._Video.h
ZBarSDK\Headers\ZBarSDK\zbar\Window.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\zbar\._Window.h
........\.......\.......\.......\._zbar
ZBarSDK\Headers\ZBarSDK\zbar.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\._zbar.h
ZBarSDK\Headers\ZBarSDK\ZBarCameraSimulator.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\._ZBarCameraSimulator.h
ZBarSDK\Headers\ZBarSDK\ZBarCaptureReader.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\._ZBarCaptureReader.h
ZBarSDK\Headers\ZBarSDK\ZBarHelpController.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\._ZBarHelpController.h
ZBarSDK\Headers\ZBarSDK\ZBarImage.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\._ZBarImage.h
ZBarSDK\Headers\ZBarSDK\ZBarImageScanner.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\._ZBarImageScanner.h
ZBarSDK\Headers\ZBarSDK\ZBarReaderController.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\._ZBarReaderController.h
ZBarSDK\Headers\ZBarSDK\ZBarReaderView.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\._ZBarReaderView.h
ZBarSDK\Headers\ZBarSDK\ZBarReaderViewController.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\._ZBarReaderViewController.h
ZBarSDK\Headers\ZBarSDK\ZBarSDK.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\._ZBarSDK.h
ZBarSDK\Headers\ZBarSDK\ZBarSymbol.h
__MACOSX\ZBarSDK\Headers\ZBarSDK\._ZBarSymbol.h
........\.......\.......\._ZBarSDK
........\.......\._Headers
ZBarSDK\libzbar.a
__MACOSX\ZBarSDK\._libzbar.a
ZBarSDK\Resources
.......\.........\.DS_Store
__MACOSX\ZBarSDK\Resources
........\.......\.........\._.DS_Store
ZBarSDK\Resources\zbar-back.png
__MACOSX\ZBarSDK\Resources\._zbar-back.png
ZBarSDK\Resources\zbar-help.html
__MACOSX\ZBarSDK\Resources\._zbar-help.html
ZBarSDK\Resources\zbar-helpicons.png
__MACOSX\ZBarSDK\Resources\._zbar-helpicons.png
ZBarSDK\Resources\zbar-samples.png
__MACOSX\ZBarSDK\Resources\._zbar-samples.png
........\.......\._Resources
........\._ZBarSDK

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