mask.c File Reference

#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <errno.h>
#include "qrencode.h"
#include "qrspec.h"
#include "mask.h"

Include dependency graph for mask.c:

Go to the source code of this file.

Macros
#define	N1   (3)
	Demerit coefficients. More...
#define	N2   (3)
#define	N3   (40)
#define	N4   (10)
#define	MASKMAKER(__exp__)
#define	maskNum   (8)

Typedefs
typedef int	MaskMaker(int, const unsigned char *, unsigned char *)

Functions
STATIC_IN_RELEASE int	Mask_writeFormatInformation (int width, unsigned char *frame, int mask, QRecLevel level)
static int	Mask_mask0 (int width, const unsigned char *s, unsigned char *d)
static int	Mask_mask1 (int width, const unsigned char *s, unsigned char *d)
static int	Mask_mask2 (int width, const unsigned char *s, unsigned char *d)
static int	Mask_mask3 (int width, const unsigned char *s, unsigned char *d)
static int	Mask_mask4 (int width, const unsigned char *s, unsigned char *d)
static int	Mask_mask5 (int width, const unsigned char *s, unsigned char *d)
static int	Mask_mask6 (int width, const unsigned char *s, unsigned char *d)
static int	Mask_mask7 (int width, const unsigned char *s, unsigned char *d)
unsigned char *	Mask_makeMask (int width, unsigned char *frame, int mask, QRecLevel level)
STATIC_IN_RELEASE int	Mask_calcN1N3 (int length, int *runLength)
STATIC_IN_RELEASE int	Mask_calcN2 (int width, unsigned char *frame)
STATIC_IN_RELEASE int	Mask_calcRunLengthH (int width, unsigned char *frame, int *runLength)
STATIC_IN_RELEASE int	Mask_calcRunLengthV (int width, unsigned char *frame, int *runLength)
STATIC_IN_RELEASE int	Mask_evaluateSymbol (int width, unsigned char *frame)
unsigned char *	Mask_mask (int width, unsigned char *frame, QRecLevel level)

Variables
static MaskMaker *	maskMakers [(8)]

Macro Definition Documentation

MASKMAKER

#define MASKMAKER

(

__exp__

)

Value:

    int x, y;\
    int b = 0;\
\
    for(y = 0; y < width; y++) {\
        for(x = 0; x < width; x++) {\
            if(*s & 0x80) {\
                *d = *s;\
            } else {\
                *d = *s ^ ((__exp__) == 0);\
            }\
            b += (int)(*d & 1);\
            s++; d++;\
        }\
    }\
    return b;

Definition at line 86 of file mask.c.

maskNum

#define maskNum   (8)

Definition at line 143 of file mask.c.

N1

#define N1   (3)

Demerit coefficients.

See Section 8.8.2, pp.45, JIS X0510:2004.

Definition at line 81 of file mask.c.

N2

#define N2   (3)

Definition at line 82 of file mask.c.

N3

#define N3   (40)

Definition at line 83 of file mask.c.

N4

#define N4   (10)

Definition at line 84 of file mask.c.

Typedef Documentation

MaskMaker

typedef int MaskMaker(int, const unsigned char *, unsigned char *)

Definition at line 144 of file mask.c.

Function Documentation

Mask_calcN1N3()

STATIC_IN_RELEASE int Mask_calcN1N3	(	int	length,
		int *	runLength
	)

Definition at line 188 of file mask.c.

References N1, and N3.

Referenced by Mask_evaluateSymbol().

Mask_calcN2()

STATIC_IN_RELEASE int Mask_calcN2	(	int	width,
		unsigned char *	frame
	)

Definition at line 221 of file mask.c.

References N2.

Referenced by Mask_evaluateSymbol().

Mask_calcRunLengthH()

STATIC_IN_RELEASE int Mask_calcRunLengthH	(	int	width,
		unsigned char *	frame,
		int *	runLength
	)

Definition at line 244 of file mask.c.

Referenced by Mask_evaluateSymbol().

Mask_calcRunLengthV()

STATIC_IN_RELEASE int Mask_calcRunLengthV	(	int	width,
		unsigned char *	frame,
		int *	runLength
	)

Definition at line 272 of file mask.c.

Referenced by Mask_evaluateSymbol().

Mask_evaluateSymbol()

STATIC_IN_RELEASE int Mask_evaluateSymbol	(	int	width,
		unsigned char *	frame
	)

Definition at line 300 of file mask.c.

References Mask_calcN1N3(), Mask_calcN2(), Mask_calcRunLengthH(), Mask_calcRunLengthV(), and QRSPEC_WIDTH_MAX.

Referenced by Mask_mask().

Mask_makeMask()

unsigned char * Mask_makeMask	(	int	width,
		unsigned char *	frame,
		int	mask,
		QRecLevel	level
	)

Definition at line 164 of file mask.c.

References level, Mask_writeFormatInformation(), maskMakers, and maskNum.

Referenced by QRcode_encodeMask().

Mask_mask()

unsigned char * Mask_mask	(	int	width,
		unsigned char *	frame,
		QRecLevel	level
	)

Definition at line 322 of file mask.c.

References level, Mask_evaluateSymbol(), Mask_writeFormatInformation(), maskMakers, maskNum, and N4.

Referenced by QRcode_encodeMask().

Mask_mask0()

static int Mask_mask0 ( int  width, const unsigned char *  s, unsigned char *  d  )

static

Definition at line 103 of file mask.c.

References MASKMAKER.

Mask_mask1()

static int Mask_mask1 ( int  width, const unsigned char *  s, unsigned char *  d  )

static

Definition at line 108 of file mask.c.

References MASKMAKER.

Mask_mask2()

static int Mask_mask2 ( int  width, const unsigned char *  s, unsigned char *  d  )

static

Definition at line 113 of file mask.c.

References MASKMAKER.

Mask_mask3()

static int Mask_mask3 ( int  width, const unsigned char *  s, unsigned char *  d  )

static

Definition at line 118 of file mask.c.

References MASKMAKER.

Mask_mask4()

static int Mask_mask4 ( int  width, const unsigned char *  s, unsigned char *  d  )

static

Definition at line 123 of file mask.c.

References MASKMAKER.

Mask_mask5()

static int Mask_mask5 ( int  width, const unsigned char *  s, unsigned char *  d  )

static

Definition at line 128 of file mask.c.

References MASKMAKER.

Mask_mask6()

static int Mask_mask6 ( int  width, const unsigned char *  s, unsigned char *  d  )

static

Definition at line 133 of file mask.c.

References MASKMAKER.

Mask_mask7()

static int Mask_mask7 ( int  width, const unsigned char *  s, unsigned char *  d  )

static

Definition at line 138 of file mask.c.

References MASKMAKER.

Mask_writeFormatInformation()

STATIC_IN_RELEASE int Mask_writeFormatInformation	(	int	width,
		unsigned char *	frame,
		int	mask,
		QRecLevel	level
	)

Definition at line 34 of file mask.c.

References level, and QRspec_getFormatInfo().

Referenced by Mask_makeMask(), and Mask_mask().

Variable Documentation

maskMakers

MaskMaker* maskMakers[(8)]

static

Initial value:

= {
    Mask_mask0, Mask_mask1, Mask_mask2, Mask_mask3,
    Mask_mask4, Mask_mask5, Mask_mask6, Mask_mask7
}

Definition at line 145 of file mask.c.

Referenced by Mask_makeMask(), and Mask_mask().