mask.c File Reference

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

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 [maskNum]

Macro Definition Documentation

#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 84 of file mask.c.

Referenced by Mask_mask0(), Mask_mask1(), Mask_mask2(), Mask_mask3(), Mask_mask4(), Mask_mask5(), Mask_mask6(), and Mask_mask7().

#define maskNum   (8)

Definition at line 141 of file mask.c.

Referenced by Mask_makeMask(), and Mask_mask().

#define N1   (3)

Demerit coefficients.

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

Definition at line 79 of file mask.c.

Referenced by Mask_calcN1N3().

#define N2   (3)

Definition at line 80 of file mask.c.

Referenced by Mask_calcN2().

#define N3   (40)

Definition at line 81 of file mask.c.

Referenced by Mask_calcN1N3().

#define N4   (10)

Definition at line 82 of file mask.c.

Referenced by Mask_mask().

Typedef Documentation

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

Definition at line 142 of file mask.c.

Function Documentation

STATIC_IN_RELEASE int Mask_calcN1N3	(	int	length,
		int *	runLength
	)

Definition at line 186 of file mask.c.

References N1, and N3.

Referenced by Mask_evaluateSymbol().

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

Definition at line 219 of file mask.c.

References N2.

Referenced by Mask_evaluateSymbol().

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

Definition at line 242 of file mask.c.

Referenced by Mask_evaluateSymbol().

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

Definition at line 270 of file mask.c.

Referenced by Mask_evaluateSymbol().

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

Definition at line 298 of file mask.c.

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

Referenced by Mask_mask().

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

Definition at line 162 of file mask.c.

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

Referenced by QRcode_encodeMask().

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

Definition at line 320 of file mask.c.

References free(), malloc(), Mask_evaluateSymbol(), Mask_writeFormatInformation(), maskMakers, maskNum, and N4.

Referenced by QRcode_encodeMask().

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

static

Definition at line 101 of file mask.c.

References MASKMAKER.

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

static

Definition at line 106 of file mask.c.

References MASKMAKER.

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

static

Definition at line 111 of file mask.c.

References MASKMAKER.

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

static

Definition at line 116 of file mask.c.

References MASKMAKER.

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

static

Definition at line 121 of file mask.c.

References MASKMAKER.

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

static

Definition at line 126 of file mask.c.

References MASKMAKER.

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

static

Definition at line 131 of file mask.c.

References MASKMAKER.

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

static

Definition at line 136 of file mask.c.

References MASKMAKER.

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

Definition at line 32 of file mask.c.

References QRspec_getFormatInfo().

Referenced by Mask_makeMask(), and Mask_mask().

Variable Documentation

MaskMaker* maskMakers[maskNum]

static

Initial value:

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

Definition at line 143 of file mask.c.

Referenced by Mask_makeMask(), and Mask_mask().