dmtxencode.c File Reference

libdmtx - Data Matrix Encoding/Decoding Library Copyright 2008, 2009 Mike Laughton. More...

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "dmtx.h"
#include "dmtxstatic.h"

Go to the source code of this file.

Macros
#define	ISDIGIT(n)

Functions
DmtxEncode *	dmtxEncodeCreate (void)
	Initialize encode struct with default values.
DmtxPassFail	dmtxEncodeDestroy (DmtxEncode **enc)
	Deinitialize encode struct.
DmtxPassFail	dmtxEncodeSetProp (DmtxEncode *enc, int prop, int value)
	Set encoding behavior property.
int	dmtxEncodeGetProp (DmtxEncode *enc, int prop)
	Get encoding behavior property.
DmtxPassFail	dmtxEncodeDataMatrix (DmtxEncode *enc, int inputSize, unsigned char *inputString)
	Convert message into Data Matrix image.
DmtxPassFail	dmtxEncodeDataMosaic (DmtxEncode *enc, int inputSize, unsigned char *inputString)
	Convert message into Data Mosaic image.
static int	encodeDataCodewords (DmtxByteList *input, DmtxByteList *output, int sizeIdxRequest, DmtxScheme scheme, int fnc1)
	Convert input into message using specific encodation scheme.
static void	printPattern (DmtxEncode *enc)
	Write encoded message to image.

Detailed Description

libdmtx - Data Matrix Encoding/Decoding Library Copyright 2008, 2009 Mike Laughton.

All rights reserved. Copyright 2012-2016 Vadim A. Misbakh-Soloviov. All rights reserved.

See LICENSE file in the main project directory for full terms of use and distribution.

Contact: Vadim A. Misbakh-Soloviov dmtx@.nosp@m.mva..nosp@m.name Mike Laughton mike@.nosp@m.drag.nosp@m.onfly.nosp@m.logi.nosp@m.c.com

Base encoding logic

Definition in file dmtxencode.c.

Macro Definition Documentation

ISDIGIT

#define ISDIGIT

(

n

)

Value:

(n > 47 && n < 58)

Definition at line 26 of file dmtxencode.c.

Function Documentation

dmtxEncodeCreate()

DmtxEncode * dmtxEncodeCreate ( void )

extern

Initialize encode struct with default values.

Returns

Initialized DmtxEncode struct

Definition at line 32 of file dmtxencode.c.

dmtxEncodeDataMatrix()

DmtxPassFail dmtxEncodeDataMatrix ( DmtxEncode * enc, int inputSize, unsigned char * inputString )

extern

Convert message into Data Matrix image.

Parameters

enc
inputSize
inputString

Returns

DmtxPass | DmtxFail

Definition at line 171 of file dmtxencode.c.

dmtxEncodeDataMosaic()

DmtxPassFail dmtxEncodeDataMosaic ( DmtxEncode * enc, int inputSize, unsigned char * inputString )

extern

Convert message into Data Mosaic image.

1) count how many codewords it would take to encode the whole thing 2) take ceiling N of codeword count divided by 3 3) using minimum symbol size that can accomodate N codewords: 4) create several barcodes over iterations of increasing numbers of input codewords until you go one too far 5) if codewords remain after filling R, G, and B barcodes then go back to 3 and try with next larger size 6) take the 3 different images you created and write out a new barcode

Parameters

enc
inputSize
inputString

Returns

DmtxPass | DmtxFail

Definition at line 259 of file dmtxencode.c.

dmtxEncodeDestroy()

DmtxPassFail dmtxEncodeDestroy ( DmtxEncode ** enc )

extern

Deinitialize encode struct.

Parameters

enc

Returns

void

Definition at line 70 of file dmtxencode.c.

dmtxEncodeGetProp()

int dmtxEncodeGetProp ( DmtxEncode * enc, int prop )

extern

Get encoding behavior property.

Parameters

enc
prop

Returns

value

Definition at line 146 of file dmtxencode.c.

dmtxEncodeSetProp()

DmtxPassFail dmtxEncodeSetProp ( DmtxEncode * enc, int prop, int value )

extern

Set encoding behavior property.

Parameters

enc
prop
value

Returns

DmtxPass | DmtxFail

Definition at line 99 of file dmtxencode.c.

encodeDataCodewords()

static int encodeDataCodewords ( DmtxByteList * input, DmtxByteList * output, int sizeIdxRequest, DmtxScheme scheme, int fnc1 )

static

Convert input into message using specific encodation scheme.

Returns

Count of encoded data words

Future: pass DmtxEncode to this function with an error reason field, which goes to EncodeSingle... too

Definition at line 390 of file dmtxencode.c.

printPattern()

static void printPattern ( DmtxEncode * enc )

static

Write encoded message to image.

Parameters

enc

Definition at line 415 of file dmtxencode.c.