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Barcode Generator

The Barcode Generator is a simple API to generate barcodes directly from the Scandit SDK. The function sc_barcode_generator_new creates a barcode generator for a sepcific symbology.

The Barcode Generator supports the following formats:

  • Code 39
  • Code 128
  • EAN 13
  • UPCA
  • ITF
  • QR
  • DataMatrix
  • PDF417 (SDK version >= 8.2)

Sample​

A C and Python sample is provided in the Linux SDK archive: CommandLineBarcodeGeneratorSample.c/py.

JSON Configuration​

The generator can be configured using a JSON string understood by the sc_barcode_generator_set_options() function.

General Options​

  • foregroundColor: 4-tuple of integers [r, g, b, a] with r, g, b and a being in the range [0, 255]
  • backgroundColor: 4-tuple of integers [r, g, b, a] with r, g, b and a being in the range [0, 255]

QR Code​

  • errorCorrectionLevel: string, may be "L" (up to 7% damage), "M" (up to 15% damage), "Q" (up to 25% damage) or "H" (up to 30% damage). Default correction level is "M".
  • versionNumber: integer from 1 to 40, overrides desired version number. Version number is automatically chosen if not set. Barcode generation might fail if version number is too small.

Example:

{
    "foregroundColor" :  [ 255, 0, 0, 255 ],
    "backgroundColor" :  [ 0, 0, 255, 255 ],
    "errorCorrectionLevel": "Q"
}

PDF417​

All settings are optional.

  • errorCorrectionLevel: integer with values 0 to 8. A higher numbers increases the error correction data in the code.
  • compact: boolean, switches from normal to a compact code layout.
  • compaction: string, values TEXT, BYTE, NUMERIC or AUTO.
  • dimensions: object, {"minCols" : n, "maxCols" : n, "minRows" : n, "maxRows" : n} symbol dimensions as integer. Encoding fails if incompatible dimensions are defined.

Example:

{
    "errorCorrectionLevel": 3,
    "compact": true,
    "dimensions" {
        "minCols" : 1,
        "maxCols" : 3,
        "minRows" : 2,
        "maxRows" : 10
    }
}