com.google.zxing.qrcode.encoder
Class MatrixUtil

java.lang.Object
  com.google.zxing.qrcode.encoder.MatrixUtil

public final class MatrixUtil
extends Object

Author:

[email protected] (Satoru Takabayashi) - creator, [email protected] (Daniel Switkin) - ported from C++

Method Summary

static void	buildMatrix(BitArray dataBits, ErrorCorrectionLevel ecLevel, int version, int maskPattern, ByteMatrix matrix)
static int	calculateBCHCode(int value, int poly)
static void	clearMatrix(ByteMatrix matrix)
static void	embedBasicPatterns(int version, ByteMatrix matrix)
static void	embedDataBits(BitArray dataBits, int maskPattern, ByteMatrix matrix)
static void	embedTypeInfo(ErrorCorrectionLevel ecLevel, int maskPattern, ByteMatrix matrix)
static int	findMSBSet(int value)
static void	makeTypeInfoBits(ErrorCorrectionLevel ecLevel, int maskPattern, BitArray bits)
static void	makeVersionInfoBits(int version, BitArray bits)
static void	maybeEmbedVersionInfo(int version, ByteMatrix matrix)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

clearMatrix

public static void clearMatrix(ByteMatrix matrix)

buildMatrix

public static void buildMatrix(BitArray dataBits,
                               ErrorCorrectionLevel ecLevel,
                               int version,
                               int maskPattern,
                               ByteMatrix matrix)
                        throws WriterException

Throws:

WriterException

embedBasicPatterns

public static void embedBasicPatterns(int version,
                                      ByteMatrix matrix)
                               throws WriterException

Throws:

WriterException

embedTypeInfo

public static void embedTypeInfo(ErrorCorrectionLevel ecLevel,
                                 int maskPattern,
                                 ByteMatrix matrix)
                          throws WriterException

Throws:

WriterException

maybeEmbedVersionInfo

public static void maybeEmbedVersionInfo(int version,
                                         ByteMatrix matrix)
                                  throws WriterException

Throws:

WriterException

embedDataBits

public static void embedDataBits(BitArray dataBits,
                                 int maskPattern,
                                 ByteMatrix matrix)
                          throws WriterException

Throws:

WriterException

findMSBSet

public static int findMSBSet(int value)

calculateBCHCode

public static int calculateBCHCode(int value,
                                   int poly)

makeTypeInfoBits

public static void makeTypeInfoBits(ErrorCorrectionLevel ecLevel,
                                    int maskPattern,
                                    BitArray bits)
                             throws WriterException

Throws:

WriterException

makeVersionInfoBits

public static void makeVersionInfoBits(int version,
                                       BitArray bits)
                                throws WriterException

Throws:

WriterException