qrcodegen.c File Reference

#include <assert.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include "qrcodegen.h"

Go to the source code of this file.

Macros
#define	testable   static
#define	qrcodegen_REED_SOLOMON_DEGREE_MAX   30

Functions
testable void	appendBitsToBuffer (unsigned int val, int numBits, uint8_t buffer[], int *bitLen)
testable void	addEccAndInterleave (uint8_t data[], int version, enum qrcodegen_Ecc ecl, uint8_t result[])
testable int	getNumDataCodewords (int version, enum qrcodegen_Ecc ecl)
testable int	getNumRawDataModules (int ver)
testable void	reedSolomonComputeDivisor (int degree, uint8_t result[])
testable void	reedSolomonComputeRemainder (const uint8_t data[], int dataLen, const uint8_t generator[], int degree, uint8_t result[])
testable uint8_t	reedSolomonMultiply (uint8_t x, uint8_t y)
testable void	initializeFunctionModules (int version, uint8_t qrcode[])
testable int	getAlignmentPatternPositions (int version, uint8_t result[7])
testable bool	getModuleBounded (const uint8_t qrcode[], int x, int y)
testable void	setModuleBounded (uint8_t qrcode[], int x, int y, bool isDark)
testable void	setModuleUnbounded (uint8_t qrcode[], int x, int y, bool isDark)
testable int	calcSegmentBitLength (enum qrcodegen_Mode mode, size_t numChars)
testable int	getTotalBits (const struct qrcodegen_Segment segs[], size_t len, int version)
bool	qrcodegen_encodeText (const char *text, uint8_t tempBuffer[], uint8_t qrcode[], enum qrcodegen_Ecc ecl, int minVersion, int maxVersion, enum qrcodegen_Mask mask, bool boostEcl)
bool	qrcodegen_encodeBinary (uint8_t dataAndTemp[], size_t dataLen, uint8_t qrcode[], enum qrcodegen_Ecc ecl, int minVersion, int maxVersion, enum qrcodegen_Mask mask, bool boostEcl)
bool	qrcodegen_encodeSegments (const struct qrcodegen_Segment segs[], size_t len, enum qrcodegen_Ecc ecl, uint8_t tempBuffer[], uint8_t qrcode[])
bool	qrcodegen_encodeSegmentsAdvanced (const struct qrcodegen_Segment segs[], size_t len, enum qrcodegen_Ecc ecl, int minVersion, int maxVersion, enum qrcodegen_Mask mask, bool boostEcl, uint8_t tempBuffer[], uint8_t qrcode[])
int	qrcodegen_getSize (const uint8_t qrcode[])
bool	qrcodegen_getModule (const uint8_t qrcode[], int x, int y)
bool	qrcodegen_isNumeric (const char *text)
bool	qrcodegen_isAlphanumeric (const char *text)
size_t	qrcodegen_calcSegmentBufferSize (enum qrcodegen_Mode mode, size_t numChars)
struct qrcodegen_Segment	qrcodegen_makeBytes (const uint8_t data[], size_t len, uint8_t buf[])
struct qrcodegen_Segment	qrcodegen_makeNumeric (const char *digits, uint8_t buf[])
struct qrcodegen_Segment	qrcodegen_makeAlphanumeric (const char *text, uint8_t buf[])
struct qrcodegen_Segment	qrcodegen_makeEci (long assignVal, uint8_t buf[])

Variables
testable const int8_t	ECC_CODEWORDS_PER_BLOCK [4][41]
testable const int8_t	NUM_ERROR_CORRECTION_BLOCKS [4][41]

Macro Definition Documentation

qrcodegen_REED_SOLOMON_DEGREE_MAX

#define qrcodegen_REED_SOLOMON_DEGREE_MAX   30

Definition at line 106 of file qrcodegen.c.

testable

#define testable   static

Definition at line 31 of file qrcodegen.c.

Function Documentation

addEccAndInterleave()

testable void addEccAndInterleave	(	uint8_t	data[],
		int	version,
		enum qrcodegen_Ecc	ecl,
		uint8_t	result[]
	)

Definition at line 294 of file qrcodegen.c.

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appendBitsToBuffer()

testable void appendBitsToBuffer	(	unsigned int	val,
		int	numBits,
		uint8_t	buffer[],
		int *	bitLen
	)

Definition at line 185 of file qrcodegen.c.

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calcSegmentBitLength()

testable int calcSegmentBitLength	(	enum qrcodegen_Mode	mode,
		size_t	numChars
	)

Definition at line 849 of file qrcodegen.c.

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getAlignmentPatternPositions()

testable int getAlignmentPatternPositions	(	int	version,
		uint8_t	result[7]
	)

Definition at line 550 of file qrcodegen.c.

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getModuleBounded()

testable bool getModuleBounded	(	const uint8_t	qrcode[],
		int	x,
		int	y
	)

Definition at line 770 of file qrcodegen.c.

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getNumDataCodewords()

testable int getNumDataCodewords	(	int	version,
		enum qrcodegen_Ecc	ecl
	)

Definition at line 327 of file qrcodegen.c.

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getNumRawDataModules()

testable int getNumRawDataModules

(

int

ver

)

Definition at line 339 of file qrcodegen.c.

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getTotalBits()

testable int getTotalBits	(	const struct qrcodegen_Segment	segs[],
		size_t	len,
		int	version
	)

Definition at line 988 of file qrcodegen.c.

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initializeFunctionModules()

testable void initializeFunctionModules	(	int	version,
		uint8_t	qrcode[]
	)

Definition at line 418 of file qrcodegen.c.

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qrcodegen_calcSegmentBufferSize()

size_t qrcodegen_calcSegmentBufferSize	(	enum qrcodegen_Mode	mode,
		size_t	numChars
	)

Definition at line 832 of file qrcodegen.c.

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qrcodegen_encodeBinary()

bool qrcodegen_encodeBinary	(	uint8_t	dataAndTemp[],
		size_t	dataLen,
		uint8_t	qrcode[],
		enum qrcodegen_Ecc	ecl,
		int	minVersion,
		int	maxVersion,
		enum qrcodegen_Mask	mask,
		bool	boostEcl
	)

Definition at line 167 of file qrcodegen.c.

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qrcodegen_encodeSegments()

bool qrcodegen_encodeSegments	(	const struct qrcodegen_Segment	segs[],
		size_t	len,
		enum qrcodegen_Ecc	ecl,
		uint8_t	tempBuffer[],
		uint8_t	qrcode[]
	)

Definition at line 196 of file qrcodegen.c.

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qrcodegen_encodeSegmentsAdvanced()

bool qrcodegen_encodeSegmentsAdvanced	(	const struct qrcodegen_Segment	segs[],
		size_t	len,
		enum qrcodegen_Ecc	ecl,
		int	minVersion,
		int	maxVersion,
		enum qrcodegen_Mask	mask,
		bool	boostEcl,
		uint8_t	tempBuffer[],
		uint8_t	qrcode[]
	)

Definition at line 204 of file qrcodegen.c.

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qrcodegen_encodeText()

bool qrcodegen_encodeText	(	const char *	text,
		uint8_t	tempBuffer[],
		uint8_t	qrcode[],
		enum qrcodegen_Ecc	ecl,
		int	minVersion,
		int	maxVersion,
		enum qrcodegen_Mask	mask,
		bool	boostEcl
	)

Definition at line 129 of file qrcodegen.c.

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qrcodegen_getModule()

bool qrcodegen_getModule	(	const uint8_t	qrcode[],
		int	x,
		int	y
	)

Definition at line 762 of file qrcodegen.c.

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qrcodegen_getSize()

int qrcodegen_getSize

(

const uint8_t

qrcode[]

)

Definition at line 752 of file qrcodegen.c.

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qrcodegen_isAlphanumeric()

bool qrcodegen_isAlphanumeric

(

const char *

text

)

Definition at line 821 of file qrcodegen.c.

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qrcodegen_isNumeric()

bool qrcodegen_isNumeric

(

const char *

text

)

Definition at line 810 of file qrcodegen.c.

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qrcodegen_makeAlphanumeric()

struct qrcodegen_Segment qrcodegen_makeAlphanumeric	(	const char *	text,
		uint8_t	buf[]
	)

Definition at line 925 of file qrcodegen.c.

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qrcodegen_makeBytes()

struct qrcodegen_Segment qrcodegen_makeBytes	(	const uint8_t	data[],
		size_t	len,
		uint8_t	buf[]
	)

Definition at line 876 of file qrcodegen.c.

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qrcodegen_makeEci()

struct qrcodegen_Segment qrcodegen_makeEci	(	long	assignVal,
		uint8_t	buf[]
	)

Definition at line 959 of file qrcodegen.c.

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qrcodegen_makeNumeric()

struct qrcodegen_Segment qrcodegen_makeNumeric	(	const char *	digits,
		uint8_t	buf[]
	)

Definition at line 891 of file qrcodegen.c.

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reedSolomonComputeDivisor()

testable void reedSolomonComputeDivisor	(	int	degree,
		uint8_t	result[]
	)

Definition at line 358 of file qrcodegen.c.

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reedSolomonComputeRemainder()

testable void reedSolomonComputeRemainder	(	const uint8_t	data[],
		int	dataLen,
		const uint8_t	generator[],
		int	degree,
		uint8_t	result[]
	)

Definition at line 384 of file qrcodegen.c.

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reedSolomonMultiply()

testable uint8_t reedSolomonMultiply	(	uint8_t	x,
		uint8_t	y
	)

Definition at line 402 of file qrcodegen.c.

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setModuleBounded()

testable void setModuleBounded	(	uint8_t	qrcode[],
		int	x,
		int	y,
		bool	isDark
	)

Definition at line 779 of file qrcodegen.c.

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setModuleUnbounded()

testable void setModuleUnbounded	(	uint8_t	qrcode[],
		int	x,
		int	y,
		bool	isDark
	)

Definition at line 793 of file qrcodegen.c.

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Variable Documentation

ECC_CODEWORDS_PER_BLOCK

testable const int8_t ECC_CODEWORDS_PER_BLOCK[4][41]

Initial value:

= {
    
    
    {-1,  7, 10, 15, 20, 26, 18, 20, 24, 30, 18, 20, 24, 26, 30, 22, 24, 28, 30, 28, 28, 28, 28, 30, 30, 26, 28, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30},  
    {-1, 10, 16, 26, 18, 24, 16, 18, 22, 22, 26, 30, 22, 22, 24, 24, 28, 28, 26, 26, 26, 26, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28},  
    {-1, 13, 22, 18, 26, 18, 24, 18, 22, 20, 24, 28, 26, 24, 20, 30, 24, 28, 28, 26, 30, 28, 30, 30, 30, 30, 28, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30},  
    {-1, 17, 28, 22, 16, 22, 28, 26, 26, 24, 28, 24, 28, 22, 24, 24, 30, 28, 28, 26, 28, 30, 24, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30},  
}

Definition at line 97 of file qrcodegen.c.

NUM_ERROR_CORRECTION_BLOCKS

testable const int8_t NUM_ERROR_CORRECTION_BLOCKS[4][41]

Initial value:

= {
    
    
    {-1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 4,  4,  4,  4,  4,  6,  6,  6,  6,  7,  8,  8,  9,  9, 10, 12, 12, 12, 13, 14, 15, 16, 17, 18, 19, 19, 20, 21, 22, 24, 25},  
    {-1, 1, 1, 1, 2, 2, 4, 4, 4, 5, 5,  5,  8,  9,  9, 10, 10, 11, 13, 14, 16, 17, 17, 18, 20, 21, 23, 25, 26, 28, 29, 31, 33, 35, 37, 38, 40, 43, 45, 47, 49},  
    {-1, 1, 1, 2, 2, 4, 4, 6, 6, 8, 8,  8, 10, 12, 16, 12, 17, 16, 18, 21, 20, 23, 23, 25, 27, 29, 34, 34, 35, 38, 40, 43, 45, 48, 51, 53, 56, 59, 62, 65, 68},  
    {-1, 1, 1, 2, 4, 4, 4, 5, 6, 8, 8, 11, 11, 16, 16, 18, 16, 19, 21, 25, 25, 25, 34, 30, 32, 35, 37, 40, 42, 45, 48, 51, 54, 57, 60, 63, 66, 70, 74, 77, 81},  
}

Definition at line 109 of file qrcodegen.c.