qrspec.h File Reference

#include "qrencode.h"

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Macros
#define	QRSPEC_WIDTH_MAX   177
	Version and capacity. More...
#define	QRspec_rsBlockNum(__spec__)   (__spec__[0] + __spec__[3])
#define	QRspec_rsBlockNum1(__spec__)   (__spec__[0])
#define	QRspec_rsDataCodes1(__spec__)   (__spec__[1])
#define	QRspec_rsEccCodes1(__spec__)   (__spec__[2])
#define	QRspec_rsBlockNum2(__spec__)   (__spec__[3])
#define	QRspec_rsDataCodes2(__spec__)   (__spec__[4])
#define	QRspec_rsEccCodes2(__spec__)   (__spec__[2])
#define	QRspec_rsDataLength(__spec__)
#define	QRspec_rsEccLength(__spec__)    (QRspec_rsBlockNum(__spec__) * QRspec_rsEccCodes1(__spec__))
#define	QRSPEC_MODEID_ECI   7
	Mode indicator. More...
#define	QRSPEC_MODEID_NUM   1
#define	QRSPEC_MODEID_AN   2
#define	QRSPEC_MODEID_8   4
#define	QRSPEC_MODEID_KANJI   8
#define	QRSPEC_MODEID_FNC1FIRST   5
#define	QRSPEC_MODEID_FNC1SECOND   9
#define	QRSPEC_MODEID_STRUCTURE   3
#define	QRSPEC_MODEID_TERMINATOR   0

Functions
int	QRspec_getDataLength (int version, QRecLevel level)
	Return maximum data code length (bytes) for the version. More...
int	QRspec_getECCLength (int version, QRecLevel level)
	Return maximum error correction code length (bytes) for the version. More...
int	QRspec_getMinimumVersion (int size, QRecLevel level)
	Return a version number that satisfies the input code length. More...
int	QRspec_getWidth (int version)
	Return the width of the symbol for the version. More...
int	QRspec_getRemainder (int version)
	Return the numer of remainder bits. More...
int	QRspec_lengthIndicator (QRencodeMode mode, int version)
	Length indicator. More...
int	QRspec_maximumWords (QRencodeMode mode, int version)
	Return the maximum length for the mode and version. More...
void	QRspec_getEccSpec (int version, QRecLevel level, int spec[5])
	Error correction code. More...
unsigned int	QRspec_getVersionPattern (int version)
	Version information pattern. More...
unsigned int	QRspec_getFormatInfo (int mask, QRecLevel level)
	Format information. More...
unsigned char *	QRspec_newFrame (int version)
	Frame. More...

Macro Definition Documentation

QRSPEC_MODEID_8

#define QRSPEC_MODEID_8   4

Definition at line 167 of file qrspec.h.

QRSPEC_MODEID_AN

#define QRSPEC_MODEID_AN   2

Definition at line 166 of file qrspec.h.

QRSPEC_MODEID_ECI

#define QRSPEC_MODEID_ECI   7

Mode indicator.

Mode indicator. See Table 2 of JIS X0510:2004, pp.16.

Definition at line 164 of file qrspec.h.

QRSPEC_MODEID_FNC1FIRST

#define QRSPEC_MODEID_FNC1FIRST   5

Definition at line 169 of file qrspec.h.

QRSPEC_MODEID_FNC1SECOND

#define QRSPEC_MODEID_FNC1SECOND   9

Definition at line 170 of file qrspec.h.

QRSPEC_MODEID_KANJI

#define QRSPEC_MODEID_KANJI   8

Definition at line 168 of file qrspec.h.

QRSPEC_MODEID_NUM

#define QRSPEC_MODEID_NUM   1

Definition at line 165 of file qrspec.h.

QRSPEC_MODEID_STRUCTURE

#define QRSPEC_MODEID_STRUCTURE   3

Definition at line 171 of file qrspec.h.

QRSPEC_MODEID_TERMINATOR

#define QRSPEC_MODEID_TERMINATOR   0

Definition at line 172 of file qrspec.h.

QRspec_rsBlockNum

#define QRspec_rsBlockNum

(

__spec__

)

(__spec__[0] + __spec__[3])

Definition at line 108 of file qrspec.h.

QRspec_rsBlockNum1

#define QRspec_rsBlockNum1

(

__spec__

)

(__spec__[0])

Definition at line 109 of file qrspec.h.

QRspec_rsBlockNum2

#define QRspec_rsBlockNum2

(

__spec__

)

(__spec__[3])

Definition at line 112 of file qrspec.h.

QRspec_rsDataCodes1

#define QRspec_rsDataCodes1

(

__spec__

)

(__spec__[1])

Definition at line 110 of file qrspec.h.

QRspec_rsDataCodes2

#define QRspec_rsDataCodes2

(

__spec__

)

(__spec__[4])

Definition at line 113 of file qrspec.h.

QRspec_rsDataLength

#define QRspec_rsDataLength

(

__spec__

)

Value:

    ((QRspec_rsBlockNum1(__spec__) * QRspec_rsDataCodes1(__spec__)) + \
     (QRspec_rsBlockNum2(__spec__) * QRspec_rsDataCodes2(__spec__)))

Definition at line 116 of file qrspec.h.

QRspec_rsEccCodes1

#define QRspec_rsEccCodes1

(

__spec__

)

(__spec__[2])

Definition at line 111 of file qrspec.h.

QRspec_rsEccCodes2

#define QRspec_rsEccCodes2

(

__spec__

)

(__spec__[2])

Definition at line 114 of file qrspec.h.

QRspec_rsEccLength

#define QRspec_rsEccLength

(

__spec__

)

(QRspec_rsBlockNum(__spec__) * QRspec_rsEccCodes1(__spec__))

Definition at line 119 of file qrspec.h.

QRSPEC_WIDTH_MAX

#define QRSPEC_WIDTH_MAX   177

Version and capacity.

Maximum width of a symbol

Definition at line 34 of file qrspec.h.

Function Documentation

QRspec_getDataLength()

int QRspec_getDataLength	(	int	version,
		QRecLevel	level
	)

Return maximum data code length (bytes) for the version.

Parameters

version	version of the symbol
level	error correction level

Returns

maximum size (bytes)

Definition at line 98 of file qrspec.c.

References QRspec_Capacity::ec, level, qrspecCapacity, version, and QRspec_Capacity::words.

Referenced by QRinput_appendPaddingBit(), QRinput_splitQRinputToStruct(), and QRspec_getEccSpec().

QRspec_getECCLength()

int QRspec_getECCLength	(	int	version,
		QRecLevel	level
	)

Return maximum error correction code length (bytes) for the version.

Parameters

version	version of the symbol
level	error correction level

Returns

ECC size (bytes)

Definition at line 103 of file qrspec.c.

References QRspec_Capacity::ec, level, qrspecCapacity, and version.

Referenced by QRspec_getEccSpec().

QRspec_getEccSpec()

void QRspec_getEccSpec	(	int	version,
		QRecLevel	level,
		int	spec[5]
	)

Error correction code.

Return an array of ECC specification.

Parameters

version	version of the symbol
level	error correction level
spec	an array of ECC specification contains as following: {# of type1 blocks, # of data code, # of ecc code,

of type2 blocks, # of data code}

Definition at line 234 of file qrspec.c.

References eccTable, level, QRspec_getDataLength(), QRspec_getECCLength(), and version.

Referenced by QRraw_new().

QRspec_getFormatInfo()

unsigned int QRspec_getFormatInfo	(	int	mask,
		QRecLevel	level
	)

Format information.

Return BCH encoded format information pattern.

Parameters

mask	mask number
level	error correction level

Returns

BCH encoded format information pattern

Definition at line 383 of file qrspec.c.

References formatInfo, and level.

Referenced by Mask_writeFormatInformation().

QRspec_getMinimumVersion()

int QRspec_getMinimumVersion	(	int	size,
		QRecLevel	level
	)

Return a version number that satisfies the input code length.

Parameters

size	input code length (byte)
level	error correction level

Returns

version number

Definition at line 108 of file qrspec.c.

References QRspec_Capacity::ec, level, QRSPEC_VERSION_MAX, qrspecCapacity, size, and QRspec_Capacity::words.

Referenced by QRinput_convertData(), and QRinput_estimateVersion().

QRspec_getRemainder()

int QRspec_getRemainder

(

int

version

)

Return the numer of remainder bits.

Parameters

version

vesion of the symbol

Returns

number of remainder bits

Definition at line 126 of file qrspec.c.

References qrspecCapacity, QRspec_Capacity::remainder, and version.

Referenced by QRcode_encodeMask().

QRspec_getVersionPattern()

unsigned int QRspec_getVersionPattern

(

int

version

)

Version information pattern.

Return BCH encoded version information pattern that is used for the symbol of version 7 or greater. Use lower 18 bits.

Parameters

version

version of the symbol

Returns

BCH encoded version information pattern

Definition at line 364 of file qrspec.c.

References QRSPEC_VERSION_MAX, version, and versionPattern.

Referenced by QRspec_createFrame().

QRspec_getWidth()

int QRspec_getWidth

(

int

version

)

Return the width of the symbol for the version.

Parameters

version

vesion of the symbol

Returns

width of the symbol

Definition at line 121 of file qrspec.c.

References qrspecCapacity, version, and QRspec_Capacity::width.

Referenced by QRcode_encodeMask().

QRspec_lengthIndicator()

int QRspec_lengthIndicator	(	QRencodeMode	mode,
		int	version
	)

Length indicator.

Return the size of length indicator for the mode and version.

Parameters

mode	encode mode
version	vesion of the symbol

Returns

the size of the appropriate length indicator (bits).

Definition at line 142 of file qrspec.c.

References lengthTableBits, QRinput_isSplittableMode(), and version.

Referenced by QRinput_encodeMode8(), QRinput_encodeModeAn(), QRinput_encodeModeKanji(), QRinput_encodeModeNum(), QRinput_estimateBitStreamSizeOfEntry(), QRinput_lengthOfCode(), Split_eat8(), Split_eatAn(), and Split_eatNum().

QRspec_maximumWords()

int QRspec_maximumWords	(	QRencodeMode	mode,
		int	version
	)

Return the maximum length for the mode and version.

Parameters

mode	encode mode
version	vesion of the symbol

Returns

the maximum length (bytes)

Definition at line 158 of file qrspec.c.

References lengthTableBits, QR_MODE_KANJI, QRinput_isSplittableMode(), and version.

Referenced by QRinput_encodeBitStream(), and QRinput_lengthOfCode().

QRspec_newFrame()

unsigned char * QRspec_newFrame

(

int

version

)

Frame.

Return a copy of initialized frame.

Parameters

version

version of the symbol

Returns

Array of unsigned char. You can free it by free().

Definition at line 509 of file qrspec.c.

References QRspec_createFrame(), QRSPEC_VERSION_MAX, and version.

Referenced by QRcode_encodeMask().