CODEWITHSUNDEEP
iosbarcodezbar
souvickcse
souvickcse

Reputation: 7804

ZBAR unable to scan PDF-417 iOS

I am using Zbar for my iOS barcode scanning app but the problem is it is not detecting pdf-417 type of barcodes. I've installed ZBAR app for iPhone it is also unable to detect pdf417. But in zbar symbols structure pdf 417 is added. I also tried to enable pdf-417 explicitly by this line of code, but no luck. 

     [scanner setSymbology: ZBAR_PDF417 config: ZBAR_CFG_ENABLE to: 1];

Any help?

Upvotes: 4

Views: 3894

Answers (2)

Ganapathy
Ganapathy

Reputation: 4614

Zbar scanner support only some specific bar code types.

It supports bar code formats such us AN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39, Interleaved 2 of 5 and QR Code.

Refer to this site: http://zbar.sourceforge.net/

For PDF-417 bar code some separate SDK is available it seems. It will support the bar code such us Pdf417, QrCode, LicenseInfo, Code128, Code39, EAN13, EAN8, ITF, UPC and UPCE.

https://github.com/PDF417/pdf417-ios

Customize this one with the config type:

[scanner setSymbology: ZBAR_PDF417 config: ZBAR_CFG_ENABLE to: 1];

Just try with all the config type and check.

typedef enum zbar_config_e {
    ZBAR_CFG_ENABLE = 0,        /**< enable symbology/feature */
    ZBAR_CFG_ADD_CHECK,         /**< enable check digit when optional */
    ZBAR_CFG_EMIT_CHECK,        /**< return check digit when present */
    ZBAR_CFG_ASCII,             /**< enable full ASCII character set */
    ZBAR_CFG_NUM,               /**< number of boolean decoder configs */

    ZBAR_CFG_MIN_LEN = 0x20,    /**< minimum data length for valid decode */
    ZBAR_CFG_MAX_LEN,           /**< maximum data length for valid decode */

    ZBAR_CFG_UNCERTAINTY = 0x40,/**< required video consistency frames */

    ZBAR_CFG_POSITION = 0x80,   /**< enable scanner to collect position data */

    ZBAR_CFG_X_DENSITY = 0x100, /**< image scanner vertical scan density */
    ZBAR_CFG_Y_DENSITY,         /**< image scanner horizontal scan density */
} zbar_config_t;

Upvotes: 4

Prabu Arumugam
Prabu Arumugam

Reputation: 1989

If you are using iOS7 or above, you don't have to rely on third-party libraries like ZBar. AVFoundation has built-in support for detecting 1D and 2D barcodes including PDF417 and QR codes using the device camera. AVMetadataMachineReadableCodeObject does the trick.

You can find working examples here and here.

Upvotes: 2

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