mirror of https://github.com/status-im/qzxing.git
First commit for the port of Qr encoder from the ZXing core 2.3 Java version.
This commit is contained in:
parent
e91c60ee10
commit
1884640d67
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@ -37,6 +37,8 @@ private:
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Mode(int cbv0_9, int cbv10_26, int cbv27, int bits, char const* name);
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public:
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Mode(const Mode& mode);
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static Mode TERMINATOR;
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static Mode NUMERIC;
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static Mode ALPHANUMERIC;
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@ -44,47 +44,55 @@ Mode Mode::FNC1_SECOND_POSITION(0, 0, 0, 0x09, "FNC1_SECOND_POSITION");
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Mode Mode::HANZI(8, 10, 12, 0x0D, "HANZI");
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Mode::Mode(int cbv0_9, int cbv10_26, int cbv27, int /* bits */, char const* name) :
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characterCountBitsForVersions0To9_(cbv0_9), characterCountBitsForVersions10To26_(cbv10_26),
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characterCountBitsForVersions27AndHigher_(cbv27), name_(name) {
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characterCountBitsForVersions0To9_(cbv0_9), characterCountBitsForVersions10To26_(cbv10_26),
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characterCountBitsForVersions27AndHigher_(cbv27), name_(name) {
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}
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Mode::Mode(const zxing::qrcode::Mode &mode)
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{
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characterCountBitsForVersions0To9_ = mode.characterCountBitsForVersions0To9_;
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characterCountBitsForVersions10To26_ = mode.characterCountBitsForVersions10To26_;
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characterCountBitsForVersions27AndHigher_ = mode.characterCountBitsForVersions27AndHigher_;
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name_ = mode.name_;
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}
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Mode& Mode::forBits(int bits) {
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switch (bits) {
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case 0x0:
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return TERMINATOR;
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case 0x1:
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return NUMERIC;
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case 0x2:
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return ALPHANUMERIC;
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case 0x3:
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return STRUCTURED_APPEND;
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case 0x4:
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return BYTE;
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case 0x5:
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return FNC1_FIRST_POSITION;
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case 0x7:
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return ECI;
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case 0x8:
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return KANJI;
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case 0x9:
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return FNC1_SECOND_POSITION;
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case 0xD:
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// 0xD is defined in GBT 18284-2000, may not be supported in foreign country
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return HANZI;
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default:
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ostringstream s;
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s << "Illegal mode bits: " << bits;
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throw ReaderException(s.str().c_str());
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}
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switch (bits) {
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case 0x0:
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return TERMINATOR;
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case 0x1:
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return NUMERIC;
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case 0x2:
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return ALPHANUMERIC;
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case 0x3:
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return STRUCTURED_APPEND;
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case 0x4:
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return BYTE;
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case 0x5:
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return FNC1_FIRST_POSITION;
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case 0x7:
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return ECI;
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case 0x8:
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return KANJI;
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case 0x9:
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return FNC1_SECOND_POSITION;
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case 0xD:
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// 0xD is defined in GBT 18284-2000, may not be supported in foreign country
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return HANZI;
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default:
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ostringstream s;
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s << "Illegal mode bits: " << bits;
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throw ReaderException(s.str().c_str());
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}
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}
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int Mode::getCharacterCountBits(Version *version) {
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int number = version->getVersionNumber();
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if (number <= 9) {
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return characterCountBitsForVersions0To9_;
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} else if (number <= 26) {
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return characterCountBitsForVersions10To26_;
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} else {
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return characterCountBitsForVersions27AndHigher_;
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}
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int number = version->getVersionNumber();
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if (number <= 9) {
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return characterCountBitsForVersions0To9_;
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} else if (number <= 26) {
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return characterCountBitsForVersions10To26_;
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} else {
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return characterCountBitsForVersions27AndHigher_;
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}
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}
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@ -0,0 +1,33 @@
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#ifndef BLOCKPAIR_H
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#define BLOCKPAIR_H
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#include <vector>
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using namespace std;
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namespace zxing {
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namespace qrcode {
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class BlockPair
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{
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private:
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vector<char> data_;
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vector<char> errorCorrection_;
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public:
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BlockPair(const vector<char> &data, const vector<char> &errorCorrection) :
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data_(data), errorCorrection_(errorCorrection) {}
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vector<char> getDataBytes() {
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return data_;
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}
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vector<char> getErrorCorrectionBytes() {
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return errorCorrection_;
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}
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};
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}
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}
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#endif //BLOCKPAIR_H
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@ -0,0 +1,81 @@
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#include "ByteMatrix.h"
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#include <sstream>
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namespace zxing {
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namespace qrcode {
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ByteMatrix::ByteMatrix(size_t width, size_t height) :
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width_(width), height_(height)
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{
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for(size_t i=0; i<height; ++i)
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bytes_[i].resize(width);
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}
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size_t ByteMatrix::getHeight()
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{
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return height_;
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}
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size_t ByteMatrix::getWidth()
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{
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return width_;
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}
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char ByteMatrix::get(size_t x, size_t y)
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{
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return bytes_[y][x];
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}
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std::vector< std::vector<char> > ByteMatrix::getArray()
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{
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return bytes_;
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}
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void ByteMatrix::set(size_t x, size_t y, const char value)
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{
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bytes_[y][x] = value;
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}
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void ByteMatrix::set(size_t x, size_t y, size_t value)
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{
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bytes_[y][x] = (char) value;
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}
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void ByteMatrix::set(size_t x, size_t y, bool value)
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{
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bytes_[y][x] = (char) (value ? 1 : 0);
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}
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void ByteMatrix::clear(const char value)
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{
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for (size_t y = 0; y < height_; ++y) {
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for (size_t x = 0; x < width_; ++x) {
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bytes_[y][x] = value;
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}
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}
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}
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const std::string ByteMatrix::toString()
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{
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std::stringstream result;// = new StringBuilder(2 * width * height + 2);
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for (size_t y = 0; y < height_; ++y) {
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for (size_t x = 0; x < width_; ++x) {
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switch (bytes_[y][x]) {
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case 0:
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result << " 0";
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break;
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case 1:
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result << " 1";
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break;
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default:
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result << " ";
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break;
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}
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}
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result << '\n' ;
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}
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return result.str();
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}
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}
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}
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@ -0,0 +1,37 @@
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#ifndef BYTEMATRIX_H
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#define BYTEMATRIX_H
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#include <vector>
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#include <string>
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namespace zxing {
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namespace qrcode {
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class ByteMatrix
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{
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private:
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std::vector< std::vector<char> > bytes_;
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size_t width_;
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size_t height_;
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public:
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ByteMatrix(size_t width, size_t height);
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size_t getHeight();
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size_t getWidth();
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char get(size_t x, size_t y);
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std::vector< std::vector<char> > getArray();
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void set(size_t x, size_t y, const char value);
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void set(size_t x, size_t y, size_t value);
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void set(size_t x, size_t y, bool value);
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void clear(const char value);
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const std::string toString();
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};
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}
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}
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#endif //BYTEMATRIX_H
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@ -0,0 +1,582 @@
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///*
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// * Copyright 2008 ZXing authors
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// *
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// * Licensed under the Apache License, Version 2.0 (the "License");
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// * you may not use this file except in compliance with the License.
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// * You may obtain a copy of the License at
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// *
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// * http://www.apache.org/licenses/LICENSE-2.0
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// *
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// * Unless required by applicable law or agreed to in writing, software
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// * distributed under the License is distributed on an "AS IS" BASIS,
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// * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// * See the License for the specific language governing permissions and
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// * limitations under the License.
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// */
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//package com.google.zxing.qrcode.encoder;
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//import com.google.zxing.EncodeHintType;
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//import com.google.zxing.WriterException;
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//import com.google.zxing.common.BitArray;
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//import com.google.zxing.common.CharacterSetECI;
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//import com.google.zxing.common.reedsolomon.GenericGF;
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//import com.google.zxing.common.reedsolomon.ReedSolomonEncoder;
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//import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
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//import com.google.zxing.qrcode.decoder.Mode;
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//import com.google.zxing.qrcode.decoder.Version;
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//import java.io.UnsupportedEncodingException;
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//import java.util.ArrayList;
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//import java.util.Collection;
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//import java.util.Map;
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///**
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// * @author satorux@google.com (Satoru Takabayashi) - creator
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// * @author dswitkin@google.com (Daniel Switkin) - ported from C++
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// */
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//public final class Encoder {
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// // The original table is defined in the table 5 of JISX0510:2004 (p.19).
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// private static final int[] ALPHANUMERIC_TABLE = {
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// -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 0x00-0x0f
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// -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 0x10-0x1f
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// 36, -1, -1, -1, 37, 38, -1, -1, -1, -1, 39, 40, -1, 41, 42, 43, // 0x20-0x2f
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// 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 44, -1, -1, -1, -1, -1, // 0x30-0x3f
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// -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, // 0x40-0x4f
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// 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1, // 0x50-0x5f
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// };
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// static final String DEFAULT_BYTE_MODE_ENCODING = "ISO-8859-1";
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// private Encoder() {
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// }
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// // The mask penalty calculation is complicated. See Table 21 of JISX0510:2004 (p.45) for details.
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// // Basically it applies four rules and summate all penalties.
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// private static int calculateMaskPenalty(ByteMatrix matrix) {
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// return MaskUtil.applyMaskPenaltyRule1(matrix)
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// + MaskUtil.applyMaskPenaltyRule2(matrix)
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// + MaskUtil.applyMaskPenaltyRule3(matrix)
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// + MaskUtil.applyMaskPenaltyRule4(matrix);
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// }
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// /**
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// * Encode "bytes" with the error correction level "ecLevel". The encoding mode will be chosen
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// * internally by chooseMode(). On success, store the result in "qrCode".
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// *
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// * We recommend you to use QRCode.EC_LEVEL_L (the lowest level) for
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// * "getECLevel" since our primary use is to show QR code on desktop screens. We don't need very
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// * strong error correction for this purpose.
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// *
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// * Note that there is no way to encode bytes in MODE_KANJI. We might want to add EncodeWithMode()
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// * with which clients can specify the encoding mode. For now, we don't need the functionality.
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// */
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// public static QRCode encode(String content, ErrorCorrectionLevel ecLevel) throws WriterException {
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// return encode(content, ecLevel, null);
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// }
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// public static QRCode encode(String content,
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// ErrorCorrectionLevel ecLevel,
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// Map<EncodeHintType,?> hints) throws WriterException {
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// // Determine what character encoding has been specified by the caller, if any
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// String encoding = hints == null ? null : (String) hints.get(EncodeHintType.CHARACTER_SET);
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// if (encoding == null) {
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// encoding = DEFAULT_BYTE_MODE_ENCODING;
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// }
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// // Pick an encoding mode appropriate for the content. Note that this will not attempt to use
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// // multiple modes / segments even if that were more efficient. Twould be nice.
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// Mode mode = chooseMode(content, encoding);
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// // This will store the header information, like mode and
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// // length, as well as "header" segments like an ECI segment.
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// BitArray headerBits = new BitArray();
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// // Append ECI segment if applicable
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// if (mode == Mode.BYTE && !DEFAULT_BYTE_MODE_ENCODING.equals(encoding)) {
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// CharacterSetECI eci = CharacterSetECI.getCharacterSetECIByName(encoding);
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// if (eci != null) {
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// appendECI(eci, headerBits);
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// }
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// }
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// // (With ECI in place,) Write the mode marker
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// appendModeInfo(mode, headerBits);
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// // Collect data within the main segment, separately, to count its size if needed. Don't add it to
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// // main payload yet.
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// BitArray dataBits = new BitArray();
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// appendBytes(content, mode, dataBits, encoding);
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// // Hard part: need to know version to know how many bits length takes. But need to know how many
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// // bits it takes to know version. First we take a guess at version by assuming version will be
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// // the minimum, 1:
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// int provisionalBitsNeeded = headerBits.getSize()
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// + mode.getCharacterCountBits(Version.getVersionForNumber(1))
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// + dataBits.getSize();
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// Version provisionalVersion = chooseVersion(provisionalBitsNeeded, ecLevel);
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// // Use that guess to calculate the right version. I am still not sure this works in 100% of cases.
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// int bitsNeeded = headerBits.getSize()
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// + mode.getCharacterCountBits(provisionalVersion)
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// + dataBits.getSize();
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// Version version = chooseVersion(bitsNeeded, ecLevel);
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// BitArray headerAndDataBits = new BitArray();
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// headerAndDataBits.appendBitArray(headerBits);
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// // Find "length" of main segment and write it
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// int numLetters = mode == Mode.BYTE ? dataBits.getSizeInBytes() : content.length();
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// appendLengthInfo(numLetters, version, mode, headerAndDataBits);
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// // Put data together into the overall payload
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// headerAndDataBits.appendBitArray(dataBits);
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// Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
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// int numDataBytes = version.getTotalCodewords() - ecBlocks.getTotalECCodewords();
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// // Terminate the bits properly.
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// terminateBits(numDataBytes, headerAndDataBits);
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// // Interleave data bits with error correction code.
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// BitArray finalBits = interleaveWithECBytes(headerAndDataBits,
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// version.getTotalCodewords(),
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// numDataBytes,
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// ecBlocks.getNumBlocks());
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// QRCode qrCode = new QRCode();
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// qrCode.setECLevel(ecLevel);
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// qrCode.setMode(mode);
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// qrCode.setVersion(version);
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// // Choose the mask pattern and set to "qrCode".
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// int dimension = version.getDimensionForVersion();
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// ByteMatrix matrix = new ByteMatrix(dimension, dimension);
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// int maskPattern = chooseMaskPattern(finalBits, ecLevel, version, matrix);
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// qrCode.setMaskPattern(maskPattern);
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// // Build the matrix and set it to "qrCode".
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// MatrixUtil.buildMatrix(finalBits, ecLevel, version, maskPattern, matrix);
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// qrCode.setMatrix(matrix);
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// return qrCode;
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// }
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// /**
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// * @return the code point of the table used in alphanumeric mode or
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// * -1 if there is no corresponding code in the table.
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// */
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// static int getAlphanumericCode(int code) {
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// if (code < ALPHANUMERIC_TABLE.length) {
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// return ALPHANUMERIC_TABLE[code];
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// }
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// return -1;
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// }
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// public static Mode chooseMode(String content) {
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// return chooseMode(content, null);
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// }
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// /**
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// * Choose the best mode by examining the content. Note that 'encoding' is used as a hint;
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// * if it is Shift_JIS, and the input is only double-byte Kanji, then we return {@link Mode#KANJI}.
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// */
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// private static Mode chooseMode(String content, String encoding) {
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// if ("Shift_JIS".equals(encoding)) {
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// // Choose Kanji mode if all input are double-byte characters
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// return isOnlyDoubleByteKanji(content) ? Mode.KANJI : Mode.BYTE;
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// }
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// boolean hasNumeric = false;
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// boolean hasAlphanumeric = false;
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// for (int i = 0; i < content.length(); ++i) {
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// char c = content.charAt(i);
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// if (c >= '0' && c <= '9') {
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// hasNumeric = true;
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// } else if (getAlphanumericCode(c) != -1) {
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// hasAlphanumeric = true;
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// } else {
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// return Mode.BYTE;
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// }
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// }
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// if (hasAlphanumeric) {
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// return Mode.ALPHANUMERIC;
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// }
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// if (hasNumeric) {
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// return Mode.NUMERIC;
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// }
|
||||
// return Mode.BYTE;
|
||||
// }
|
||||
|
||||
// private static boolean isOnlyDoubleByteKanji(String content) {
|
||||
// byte[] bytes;
|
||||
// try {
|
||||
// bytes = content.getBytes("Shift_JIS");
|
||||
// } catch (UnsupportedEncodingException ignored) {
|
||||
// return false;
|
||||
// }
|
||||
// int length = bytes.length;
|
||||
// if (length % 2 != 0) {
|
||||
// return false;
|
||||
// }
|
||||
// for (int i = 0; i < length; i += 2) {
|
||||
// int byte1 = bytes[i] & 0xFF;
|
||||
// if ((byte1 < 0x81 || byte1 > 0x9F) && (byte1 < 0xE0 || byte1 > 0xEB)) {
|
||||
// return false;
|
||||
// }
|
||||
// }
|
||||
// return true;
|
||||
// }
|
||||
|
||||
// private static int chooseMaskPattern(BitArray bits,
|
||||
// ErrorCorrectionLevel ecLevel,
|
||||
// Version version,
|
||||
// ByteMatrix matrix) throws WriterException {
|
||||
|
||||
// int minPenalty = Integer.MAX_VALUE; // Lower penalty is better.
|
||||
// int bestMaskPattern = -1;
|
||||
// // We try all mask patterns to choose the best one.
|
||||
// for (int maskPattern = 0; maskPattern < QRCode.NUM_MASK_PATTERNS; maskPattern++) {
|
||||
// MatrixUtil.buildMatrix(bits, ecLevel, version, maskPattern, matrix);
|
||||
// int penalty = calculateMaskPenalty(matrix);
|
||||
// if (penalty < minPenalty) {
|
||||
// minPenalty = penalty;
|
||||
// bestMaskPattern = maskPattern;
|
||||
// }
|
||||
// }
|
||||
// return bestMaskPattern;
|
||||
// }
|
||||
|
||||
// private static Version chooseVersion(int numInputBits, ErrorCorrectionLevel ecLevel) throws WriterException {
|
||||
// // In the following comments, we use numbers of Version 7-H.
|
||||
// for (int versionNum = 1; versionNum <= 40; versionNum++) {
|
||||
// Version version = Version.getVersionForNumber(versionNum);
|
||||
// // numBytes = 196
|
||||
// int numBytes = version.getTotalCodewords();
|
||||
// // getNumECBytes = 130
|
||||
// Version.ECBlocks ecBlocks = version.getECBlocksForLevel(ecLevel);
|
||||
// int numEcBytes = ecBlocks.getTotalECCodewords();
|
||||
// // getNumDataBytes = 196 - 130 = 66
|
||||
// int numDataBytes = numBytes - numEcBytes;
|
||||
// int totalInputBytes = (numInputBits + 7) / 8;
|
||||
// if (numDataBytes >= totalInputBytes) {
|
||||
// return version;
|
||||
// }
|
||||
// }
|
||||
// throw new WriterException("Data too big");
|
||||
// }
|
||||
|
||||
// /**
|
||||
// * Terminate bits as described in 8.4.8 and 8.4.9 of JISX0510:2004 (p.24).
|
||||
// */
|
||||
// static void terminateBits(int numDataBytes, BitArray bits) throws WriterException {
|
||||
// int capacity = numDataBytes << 3;
|
||||
// if (bits.getSize() > capacity) {
|
||||
// throw new WriterException("data bits cannot fit in the QR Code" + bits.getSize() + " > " +
|
||||
// capacity);
|
||||
// }
|
||||
// for (int i = 0; i < 4 && bits.getSize() < capacity; ++i) {
|
||||
// bits.appendBit(false);
|
||||
// }
|
||||
// // Append termination bits. See 8.4.8 of JISX0510:2004 (p.24) for details.
|
||||
// // If the last byte isn't 8-bit aligned, we'll add padding bits.
|
||||
// int numBitsInLastByte = bits.getSize() & 0x07;
|
||||
// if (numBitsInLastByte > 0) {
|
||||
// for (int i = numBitsInLastByte; i < 8; i++) {
|
||||
// bits.appendBit(false);
|
||||
// }
|
||||
// }
|
||||
// // If we have more space, we'll fill the space with padding patterns defined in 8.4.9 (p.24).
|
||||
// int numPaddingBytes = numDataBytes - bits.getSizeInBytes();
|
||||
// for (int i = 0; i < numPaddingBytes; ++i) {
|
||||
// bits.appendBits((i & 0x01) == 0 ? 0xEC : 0x11, 8);
|
||||
// }
|
||||
// if (bits.getSize() != capacity) {
|
||||
// throw new WriterException("Bits size does not equal capacity");
|
||||
// }
|
||||
// }
|
||||
|
||||
// /**
|
||||
// * Get number of data bytes and number of error correction bytes for block id "blockID". Store
|
||||
// * the result in "numDataBytesInBlock", and "numECBytesInBlock". See table 12 in 8.5.1 of
|
||||
// * JISX0510:2004 (p.30)
|
||||
// */
|
||||
// static void getNumDataBytesAndNumECBytesForBlockID(int numTotalBytes,
|
||||
// int numDataBytes,
|
||||
// int numRSBlocks,
|
||||
// int blockID,
|
||||
// int[] numDataBytesInBlock,
|
||||
// int[] numECBytesInBlock) throws WriterException {
|
||||
// if (blockID >= numRSBlocks) {
|
||||
// throw new WriterException("Block ID too large");
|
||||
// }
|
||||
// // numRsBlocksInGroup2 = 196 % 5 = 1
|
||||
// int numRsBlocksInGroup2 = numTotalBytes % numRSBlocks;
|
||||
// // numRsBlocksInGroup1 = 5 - 1 = 4
|
||||
// int numRsBlocksInGroup1 = numRSBlocks - numRsBlocksInGroup2;
|
||||
// // numTotalBytesInGroup1 = 196 / 5 = 39
|
||||
// int numTotalBytesInGroup1 = numTotalBytes / numRSBlocks;
|
||||
// // numTotalBytesInGroup2 = 39 + 1 = 40
|
||||
// int numTotalBytesInGroup2 = numTotalBytesInGroup1 + 1;
|
||||
// // numDataBytesInGroup1 = 66 / 5 = 13
|
||||
// int numDataBytesInGroup1 = numDataBytes / numRSBlocks;
|
||||
// // numDataBytesInGroup2 = 13 + 1 = 14
|
||||
// int numDataBytesInGroup2 = numDataBytesInGroup1 + 1;
|
||||
// // numEcBytesInGroup1 = 39 - 13 = 26
|
||||
// int numEcBytesInGroup1 = numTotalBytesInGroup1 - numDataBytesInGroup1;
|
||||
// // numEcBytesInGroup2 = 40 - 14 = 26
|
||||
// int numEcBytesInGroup2 = numTotalBytesInGroup2 - numDataBytesInGroup2;
|
||||
// // Sanity checks.
|
||||
// // 26 = 26
|
||||
// if (numEcBytesInGroup1 != numEcBytesInGroup2) {
|
||||
// throw new WriterException("EC bytes mismatch");
|
||||
// }
|
||||
// // 5 = 4 + 1.
|
||||
// if (numRSBlocks != numRsBlocksInGroup1 + numRsBlocksInGroup2) {
|
||||
// throw new WriterException("RS blocks mismatch");
|
||||
// }
|
||||
// // 196 = (13 + 26) * 4 + (14 + 26) * 1
|
||||
// if (numTotalBytes !=
|
||||
// ((numDataBytesInGroup1 + numEcBytesInGroup1) *
|
||||
// numRsBlocksInGroup1) +
|
||||
// ((numDataBytesInGroup2 + numEcBytesInGroup2) *
|
||||
// numRsBlocksInGroup2)) {
|
||||
// throw new WriterException("Total bytes mismatch");
|
||||
// }
|
||||
|
||||
// if (blockID < numRsBlocksInGroup1) {
|
||||
// numDataBytesInBlock[0] = numDataBytesInGroup1;
|
||||
// numECBytesInBlock[0] = numEcBytesInGroup1;
|
||||
// } else {
|
||||
// numDataBytesInBlock[0] = numDataBytesInGroup2;
|
||||
// numECBytesInBlock[0] = numEcBytesInGroup2;
|
||||
// }
|
||||
// }
|
||||
|
||||
// /**
|
||||
// * Interleave "bits" with corresponding error correction bytes. On success, store the result in
|
||||
// * "result". The interleave rule is complicated. See 8.6 of JISX0510:2004 (p.37) for details.
|
||||
// */
|
||||
// static BitArray interleaveWithECBytes(BitArray bits,
|
||||
// int numTotalBytes,
|
||||
// int numDataBytes,
|
||||
// int numRSBlocks) throws WriterException {
|
||||
|
||||
// // "bits" must have "getNumDataBytes" bytes of data.
|
||||
// if (bits.getSizeInBytes() != numDataBytes) {
|
||||
// throw new WriterException("Number of bits and data bytes does not match");
|
||||
// }
|
||||
|
||||
// // Step 1. Divide data bytes into blocks and generate error correction bytes for them. We'll
|
||||
// // store the divided data bytes blocks and error correction bytes blocks into "blocks".
|
||||
// int dataBytesOffset = 0;
|
||||
// int maxNumDataBytes = 0;
|
||||
// int maxNumEcBytes = 0;
|
||||
|
||||
// // Since, we know the number of reedsolmon blocks, we can initialize the vector with the number.
|
||||
// Collection<BlockPair> blocks = new ArrayList<>(numRSBlocks);
|
||||
|
||||
// for (int i = 0; i < numRSBlocks; ++i) {
|
||||
// int[] numDataBytesInBlock = new int[1];
|
||||
// int[] numEcBytesInBlock = new int[1];
|
||||
// getNumDataBytesAndNumECBytesForBlockID(
|
||||
// numTotalBytes, numDataBytes, numRSBlocks, i,
|
||||
// numDataBytesInBlock, numEcBytesInBlock);
|
||||
|
||||
// int size = numDataBytesInBlock[0];
|
||||
// byte[] dataBytes = new byte[size];
|
||||
// bits.toBytes(8*dataBytesOffset, dataBytes, 0, size);
|
||||
// byte[] ecBytes = generateECBytes(dataBytes, numEcBytesInBlock[0]);
|
||||
// blocks.add(new BlockPair(dataBytes, ecBytes));
|
||||
|
||||
// maxNumDataBytes = Math.max(maxNumDataBytes, size);
|
||||
// maxNumEcBytes = Math.max(maxNumEcBytes, ecBytes.length);
|
||||
// dataBytesOffset += numDataBytesInBlock[0];
|
||||
// }
|
||||
// if (numDataBytes != dataBytesOffset) {
|
||||
// throw new WriterException("Data bytes does not match offset");
|
||||
// }
|
||||
|
||||
// BitArray result = new BitArray();
|
||||
|
||||
// // First, place data blocks.
|
||||
// for (int i = 0; i < maxNumDataBytes; ++i) {
|
||||
// for (BlockPair block : blocks) {
|
||||
// byte[] dataBytes = block.getDataBytes();
|
||||
// if (i < dataBytes.length) {
|
||||
// result.appendBits(dataBytes[i], 8);
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// // Then, place error correction blocks.
|
||||
// for (int i = 0; i < maxNumEcBytes; ++i) {
|
||||
// for (BlockPair block : blocks) {
|
||||
// byte[] ecBytes = block.getErrorCorrectionBytes();
|
||||
// if (i < ecBytes.length) {
|
||||
// result.appendBits(ecBytes[i], 8);
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// if (numTotalBytes != result.getSizeInBytes()) { // Should be same.
|
||||
// throw new WriterException("Interleaving error: " + numTotalBytes + " and " +
|
||||
// result.getSizeInBytes() + " differ.");
|
||||
// }
|
||||
|
||||
// return result;
|
||||
// }
|
||||
|
||||
// static byte[] generateECBytes(byte[] dataBytes, int numEcBytesInBlock) {
|
||||
// int numDataBytes = dataBytes.length;
|
||||
// int[] toEncode = new int[numDataBytes + numEcBytesInBlock];
|
||||
// for (int i = 0; i < numDataBytes; i++) {
|
||||
// toEncode[i] = dataBytes[i] & 0xFF;
|
||||
// }
|
||||
// new ReedSolomonEncoder(GenericGF.QR_CODE_FIELD_256).encode(toEncode, numEcBytesInBlock);
|
||||
|
||||
// byte[] ecBytes = new byte[numEcBytesInBlock];
|
||||
// for (int i = 0; i < numEcBytesInBlock; i++) {
|
||||
// ecBytes[i] = (byte) toEncode[numDataBytes + i];
|
||||
// }
|
||||
// return ecBytes;
|
||||
// }
|
||||
|
||||
// /**
|
||||
// * Append mode info. On success, store the result in "bits".
|
||||
// */
|
||||
// static void appendModeInfo(Mode mode, BitArray bits) {
|
||||
// bits.appendBits(mode.getBits(), 4);
|
||||
// }
|
||||
|
||||
|
||||
// /**
|
||||
// * Append length info. On success, store the result in "bits".
|
||||
// */
|
||||
// static void appendLengthInfo(int numLetters, Version version, Mode mode, BitArray bits) throws WriterException {
|
||||
// int numBits = mode.getCharacterCountBits(version);
|
||||
// if (numLetters >= (1 << numBits)) {
|
||||
// throw new WriterException(numLetters + " is bigger than " + ((1 << numBits) - 1));
|
||||
// }
|
||||
// bits.appendBits(numLetters, numBits);
|
||||
// }
|
||||
|
||||
// /**
|
||||
// * Append "bytes" in "mode" mode (encoding) into "bits". On success, store the result in "bits".
|
||||
// */
|
||||
// static void appendBytes(String content,
|
||||
// Mode mode,
|
||||
// BitArray bits,
|
||||
// String encoding) throws WriterException {
|
||||
// switch (mode) {
|
||||
// case NUMERIC:
|
||||
// appendNumericBytes(content, bits);
|
||||
// break;
|
||||
// case ALPHANUMERIC:
|
||||
// appendAlphanumericBytes(content, bits);
|
||||
// break;
|
||||
// case BYTE:
|
||||
// append8BitBytes(content, bits, encoding);
|
||||
// break;
|
||||
// case KANJI:
|
||||
// appendKanjiBytes(content, bits);
|
||||
// break;
|
||||
// default:
|
||||
// throw new WriterException("Invalid mode: " + mode);
|
||||
// }
|
||||
// }
|
||||
|
||||
// static void appendNumericBytes(CharSequence content, BitArray bits) {
|
||||
// int length = content.length();
|
||||
// int i = 0;
|
||||
// while (i < length) {
|
||||
// int num1 = content.charAt(i) - '0';
|
||||
// if (i + 2 < length) {
|
||||
// // Encode three numeric letters in ten bits.
|
||||
// int num2 = content.charAt(i + 1) - '0';
|
||||
// int num3 = content.charAt(i + 2) - '0';
|
||||
// bits.appendBits(num1 * 100 + num2 * 10 + num3, 10);
|
||||
// i += 3;
|
||||
// } else if (i + 1 < length) {
|
||||
// // Encode two numeric letters in seven bits.
|
||||
// int num2 = content.charAt(i + 1) - '0';
|
||||
// bits.appendBits(num1 * 10 + num2, 7);
|
||||
// i += 2;
|
||||
// } else {
|
||||
// // Encode one numeric letter in four bits.
|
||||
// bits.appendBits(num1, 4);
|
||||
// i++;
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
|
||||
// static void appendAlphanumericBytes(CharSequence content, BitArray bits) throws WriterException {
|
||||
// int length = content.length();
|
||||
// int i = 0;
|
||||
// while (i < length) {
|
||||
// int code1 = getAlphanumericCode(content.charAt(i));
|
||||
// if (code1 == -1) {
|
||||
// throw new WriterException();
|
||||
// }
|
||||
// if (i + 1 < length) {
|
||||
// int code2 = getAlphanumericCode(content.charAt(i + 1));
|
||||
// if (code2 == -1) {
|
||||
// throw new WriterException();
|
||||
// }
|
||||
// // Encode two alphanumeric letters in 11 bits.
|
||||
// bits.appendBits(code1 * 45 + code2, 11);
|
||||
// i += 2;
|
||||
// } else {
|
||||
// // Encode one alphanumeric letter in six bits.
|
||||
// bits.appendBits(code1, 6);
|
||||
// i++;
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
|
||||
// static void append8BitBytes(String content, BitArray bits, String encoding)
|
||||
// throws WriterException {
|
||||
// byte[] bytes;
|
||||
// try {
|
||||
// bytes = content.getBytes(encoding);
|
||||
// } catch (UnsupportedEncodingException uee) {
|
||||
// throw new WriterException(uee);
|
||||
// }
|
||||
// for (byte b : bytes) {
|
||||
// bits.appendBits(b, 8);
|
||||
// }
|
||||
// }
|
||||
|
||||
// static void appendKanjiBytes(String content, BitArray bits) throws WriterException {
|
||||
// byte[] bytes;
|
||||
// try {
|
||||
// bytes = content.getBytes("Shift_JIS");
|
||||
// } catch (UnsupportedEncodingException uee) {
|
||||
// throw new WriterException(uee);
|
||||
// }
|
||||
// int length = bytes.length;
|
||||
// for (int i = 0; i < length; i += 2) {
|
||||
// int byte1 = bytes[i] & 0xFF;
|
||||
// int byte2 = bytes[i + 1] & 0xFF;
|
||||
// int code = (byte1 << 8) | byte2;
|
||||
// int subtracted = -1;
|
||||
// if (code >= 0x8140 && code <= 0x9ffc) {
|
||||
// subtracted = code - 0x8140;
|
||||
// } else if (code >= 0xe040 && code <= 0xebbf) {
|
||||
// subtracted = code - 0xc140;
|
||||
// }
|
||||
// if (subtracted == -1) {
|
||||
// throw new WriterException("Invalid byte sequence");
|
||||
// }
|
||||
// int encoded = ((subtracted >> 8) * 0xc0) + (subtracted & 0xff);
|
||||
// bits.appendBits(encoded, 13);
|
||||
// }
|
||||
// }
|
||||
|
||||
// private static void appendECI(CharacterSetECI eci, BitArray bits) {
|
||||
// bits.appendBits(Mode.ECI.getBits(), 4);
|
||||
// // This is correct for values up to 127, which is all we need now.
|
||||
// bits.appendBits(eci.getValue(), 8);
|
||||
// }
|
||||
|
||||
//}
|
|
@ -0,0 +1,217 @@
|
|||
///*
|
||||
// * Copyright 2008 ZXing authors
|
||||
// *
|
||||
// * Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// * you may not use this file except in compliance with the License.
|
||||
// * You may obtain a copy of the License at
|
||||
// *
|
||||
// * http://www.apache.org/licenses/LICENSE-2.0
|
||||
// *
|
||||
// * Unless required by applicable law or agreed to in writing, software
|
||||
// * distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// * See the License for the specific language governing permissions and
|
||||
// * limitations under the License.
|
||||
// */
|
||||
|
||||
//package com.google.zxing.qrcode.encoder;
|
||||
|
||||
///**
|
||||
// * @author Satoru Takabayashi
|
||||
// * @author Daniel Switkin
|
||||
// * @author Sean Owen
|
||||
// */
|
||||
//final class MaskUtil {
|
||||
|
||||
// // Penalty weights from section 6.8.2.1
|
||||
// private static final int N1 = 3;
|
||||
// private static final int N2 = 3;
|
||||
// private static final int N3 = 40;
|
||||
// private static final int N4 = 10;
|
||||
|
||||
// private MaskUtil() {
|
||||
// // do nothing
|
||||
// }
|
||||
|
||||
// /**
|
||||
// * Apply mask penalty rule 1 and return the penalty. Find repetitive cells with the same color and
|
||||
// * give penalty to them. Example: 00000 or 11111.
|
||||
// */
|
||||
// static int applyMaskPenaltyRule1(ByteMatrix matrix) {
|
||||
// return applyMaskPenaltyRule1Internal(matrix, true) + applyMaskPenaltyRule1Internal(matrix, false);
|
||||
// }
|
||||
|
||||
// /**
|
||||
// * Apply mask penalty rule 2 and return the penalty. Find 2x2 blocks with the same color and give
|
||||
// * penalty to them. This is actually equivalent to the spec's rule, which is to find MxN blocks and give a
|
||||
// * penalty proportional to (M-1)x(N-1), because this is the number of 2x2 blocks inside such a block.
|
||||
// */
|
||||
// static int applyMaskPenaltyRule2(ByteMatrix matrix) {
|
||||
// int penalty = 0;
|
||||
// byte[][] array = matrix.getArray();
|
||||
// int width = matrix.getWidth();
|
||||
// int height = matrix.getHeight();
|
||||
// for (int y = 0; y < height - 1; y++) {
|
||||
// for (int x = 0; x < width - 1; x++) {
|
||||
// int value = array[y][x];
|
||||
// if (value == array[y][x + 1] && value == array[y + 1][x] && value == array[y + 1][x + 1]) {
|
||||
// penalty++;
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// return N2 * penalty;
|
||||
// }
|
||||
|
||||
// /**
|
||||
// * Apply mask penalty rule 3 and return the penalty. Find consecutive runs of 1:1:3:1:1:4
|
||||
// * starting with black, or 4:1:1:3:1:1 starting with white, and give penalty to them. If we
|
||||
// * find patterns like 000010111010000, we give penalty once.
|
||||
// */
|
||||
// static int applyMaskPenaltyRule3(ByteMatrix matrix) {
|
||||
// int numPenalties = 0;
|
||||
// byte[][] array = matrix.getArray();
|
||||
// int width = matrix.getWidth();
|
||||
// int height = matrix.getHeight();
|
||||
// for (int y = 0; y < height; y++) {
|
||||
// for (int x = 0; x < width; x++) {
|
||||
// byte[] arrayY = array[y]; // We can at least optimize this access
|
||||
// if (x + 6 < width &&
|
||||
// arrayY[x] == 1 &&
|
||||
// arrayY[x + 1] == 0 &&
|
||||
// arrayY[x + 2] == 1 &&
|
||||
// arrayY[x + 3] == 1 &&
|
||||
// arrayY[x + 4] == 1 &&
|
||||
// arrayY[x + 5] == 0 &&
|
||||
// arrayY[x + 6] == 1 &&
|
||||
// (isWhiteHorizontal(arrayY, x - 4, x) || isWhiteHorizontal(arrayY, x + 7, x + 11))) {
|
||||
// numPenalties++;
|
||||
// }
|
||||
// if (y + 6 < height &&
|
||||
// array[y][x] == 1 &&
|
||||
// array[y + 1][x] == 0 &&
|
||||
// array[y + 2][x] == 1 &&
|
||||
// array[y + 3][x] == 1 &&
|
||||
// array[y + 4][x] == 1 &&
|
||||
// array[y + 5][x] == 0 &&
|
||||
// array[y + 6][x] == 1 &&
|
||||
// (isWhiteVertical(array, x, y - 4, y) || isWhiteVertical(array, x, y + 7, y + 11))) {
|
||||
// numPenalties++;
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// return numPenalties * N3;
|
||||
// }
|
||||
|
||||
// private static boolean isWhiteHorizontal(byte[] rowArray, int from, int to) {
|
||||
// for (int i = from; i < to; i++) {
|
||||
// if (i >= 0 && i < rowArray.length && rowArray[i] == 1) {
|
||||
// return false;
|
||||
// }
|
||||
// }
|
||||
// return true;
|
||||
// }
|
||||
|
||||
// private static boolean isWhiteVertical(byte[][] array, int col, int from, int to) {
|
||||
// for (int i = from; i < to; i++) {
|
||||
// if (i >= 0 && i < array.length && array[i][col] == 1) {
|
||||
// return false;
|
||||
// }
|
||||
// }
|
||||
// return true;
|
||||
// }
|
||||
|
||||
// /**
|
||||
// * Apply mask penalty rule 4 and return the penalty. Calculate the ratio of dark cells and give
|
||||
// * penalty if the ratio is far from 50%. It gives 10 penalty for 5% distance.
|
||||
// */
|
||||
// static int applyMaskPenaltyRule4(ByteMatrix matrix) {
|
||||
// int numDarkCells = 0;
|
||||
// byte[][] array = matrix.getArray();
|
||||
// int width = matrix.getWidth();
|
||||
// int height = matrix.getHeight();
|
||||
// for (int y = 0; y < height; y++) {
|
||||
// byte[] arrayY = array[y];
|
||||
// for (int x = 0; x < width; x++) {
|
||||
// if (arrayY[x] == 1) {
|
||||
// numDarkCells++;
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// int numTotalCells = matrix.getHeight() * matrix.getWidth();
|
||||
// int fivePercentVariances = Math.abs(numDarkCells * 2 - numTotalCells) * 10 / numTotalCells;
|
||||
// return fivePercentVariances * N4;
|
||||
// }
|
||||
|
||||
// /**
|
||||
// * Return the mask bit for "getMaskPattern" at "x" and "y". See 8.8 of JISX0510:2004 for mask
|
||||
// * pattern conditions.
|
||||
// */
|
||||
// static boolean getDataMaskBit(int maskPattern, int x, int y) {
|
||||
// int intermediate;
|
||||
// int temp;
|
||||
// switch (maskPattern) {
|
||||
// case 0:
|
||||
// intermediate = (y + x) & 0x1;
|
||||
// break;
|
||||
// case 1:
|
||||
// intermediate = y & 0x1;
|
||||
// break;
|
||||
// case 2:
|
||||
// intermediate = x % 3;
|
||||
// break;
|
||||
// case 3:
|
||||
// intermediate = (y + x) % 3;
|
||||
// break;
|
||||
// case 4:
|
||||
// intermediate = ((y >>> 1) + (x / 3)) & 0x1;
|
||||
// break;
|
||||
// case 5:
|
||||
// temp = y * x;
|
||||
// intermediate = (temp & 0x1) + (temp % 3);
|
||||
// break;
|
||||
// case 6:
|
||||
// temp = y * x;
|
||||
// intermediate = ((temp & 0x1) + (temp % 3)) & 0x1;
|
||||
// break;
|
||||
// case 7:
|
||||
// temp = y * x;
|
||||
// intermediate = ((temp % 3) + ((y + x) & 0x1)) & 0x1;
|
||||
// break;
|
||||
// default:
|
||||
// throw new IllegalArgumentException("Invalid mask pattern: " + maskPattern);
|
||||
// }
|
||||
// return intermediate == 0;
|
||||
// }
|
||||
|
||||
// /**
|
||||
// * Helper function for applyMaskPenaltyRule1. We need this for doing this calculation in both
|
||||
// * vertical and horizontal orders respectively.
|
||||
// */
|
||||
// private static int applyMaskPenaltyRule1Internal(ByteMatrix matrix, boolean isHorizontal) {
|
||||
// int penalty = 0;
|
||||
// int iLimit = isHorizontal ? matrix.getHeight() : matrix.getWidth();
|
||||
// int jLimit = isHorizontal ? matrix.getWidth() : matrix.getHeight();
|
||||
// byte[][] array = matrix.getArray();
|
||||
// for (int i = 0; i < iLimit; i++) {
|
||||
// int numSameBitCells = 0;
|
||||
// int prevBit = -1;
|
||||
// for (int j = 0; j < jLimit; j++) {
|
||||
// int bit = isHorizontal ? array[i][j] : array[j][i];
|
||||
// if (bit == prevBit) {
|
||||
// numSameBitCells++;
|
||||
// } else {
|
||||
// if (numSameBitCells >= 5) {
|
||||
// penalty += N1 + (numSameBitCells - 5);
|
||||
// }
|
||||
// numSameBitCells = 1; // Include the cell itself.
|
||||
// prevBit = bit;
|
||||
// }
|
||||
// }
|
||||
// if (numSameBitCells >= 5) {
|
||||
// penalty += N1 + (numSameBitCells - 5);
|
||||
// }
|
||||
// }
|
||||
// return penalty;
|
||||
// }
|
||||
|
||||
//}
|
|
@ -0,0 +1,482 @@
|
|||
///*
|
||||
// * Copyright 2008 ZXing authors
|
||||
// *
|
||||
// * Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// * you may not use this file except in compliance with the License.
|
||||
// * You may obtain a copy of the License at
|
||||
// *
|
||||
// * http://www.apache.org/licenses/LICENSE-2.0
|
||||
// *
|
||||
// * Unless required by applicable law or agreed to in writing, software
|
||||
// * distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// * See the License for the specific language governing permissions and
|
||||
// * limitations under the License.
|
||||
// */
|
||||
|
||||
//package com.google.zxing.qrcode.encoder;
|
||||
|
||||
//import com.google.zxing.WriterException;
|
||||
//import com.google.zxing.common.BitArray;
|
||||
//import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
|
||||
//import com.google.zxing.qrcode.decoder.Version;
|
||||
|
||||
///**
|
||||
// * @author satorux@google.com (Satoru Takabayashi) - creator
|
||||
// * @author dswitkin@google.com (Daniel Switkin) - ported from C++
|
||||
// */
|
||||
//final class MatrixUtil {
|
||||
|
||||
// private MatrixUtil() {
|
||||
// // do nothing
|
||||
// }
|
||||
|
||||
// private static final int[][] POSITION_DETECTION_PATTERN = {
|
||||
// {1, 1, 1, 1, 1, 1, 1},
|
||||
// {1, 0, 0, 0, 0, 0, 1},
|
||||
// {1, 0, 1, 1, 1, 0, 1},
|
||||
// {1, 0, 1, 1, 1, 0, 1},
|
||||
// {1, 0, 1, 1, 1, 0, 1},
|
||||
// {1, 0, 0, 0, 0, 0, 1},
|
||||
// {1, 1, 1, 1, 1, 1, 1},
|
||||
// };
|
||||
|
||||
// private static final int[][] POSITION_ADJUSTMENT_PATTERN = {
|
||||
// {1, 1, 1, 1, 1},
|
||||
// {1, 0, 0, 0, 1},
|
||||
// {1, 0, 1, 0, 1},
|
||||
// {1, 0, 0, 0, 1},
|
||||
// {1, 1, 1, 1, 1},
|
||||
// };
|
||||
|
||||
// // From Appendix E. Table 1, JIS0510X:2004 (p 71). The table was double-checked by komatsu.
|
||||
// private static final int[][] POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE = {
|
||||
// {-1, -1, -1, -1, -1, -1, -1}, // Version 1
|
||||
// { 6, 18, -1, -1, -1, -1, -1}, // Version 2
|
||||
// { 6, 22, -1, -1, -1, -1, -1}, // Version 3
|
||||
// { 6, 26, -1, -1, -1, -1, -1}, // Version 4
|
||||
// { 6, 30, -1, -1, -1, -1, -1}, // Version 5
|
||||
// { 6, 34, -1, -1, -1, -1, -1}, // Version 6
|
||||
// { 6, 22, 38, -1, -1, -1, -1}, // Version 7
|
||||
// { 6, 24, 42, -1, -1, -1, -1}, // Version 8
|
||||
// { 6, 26, 46, -1, -1, -1, -1}, // Version 9
|
||||
// { 6, 28, 50, -1, -1, -1, -1}, // Version 10
|
||||
// { 6, 30, 54, -1, -1, -1, -1}, // Version 11
|
||||
// { 6, 32, 58, -1, -1, -1, -1}, // Version 12
|
||||
// { 6, 34, 62, -1, -1, -1, -1}, // Version 13
|
||||
// { 6, 26, 46, 66, -1, -1, -1}, // Version 14
|
||||
// { 6, 26, 48, 70, -1, -1, -1}, // Version 15
|
||||
// { 6, 26, 50, 74, -1, -1, -1}, // Version 16
|
||||
// { 6, 30, 54, 78, -1, -1, -1}, // Version 17
|
||||
// { 6, 30, 56, 82, -1, -1, -1}, // Version 18
|
||||
// { 6, 30, 58, 86, -1, -1, -1}, // Version 19
|
||||
// { 6, 34, 62, 90, -1, -1, -1}, // Version 20
|
||||
// { 6, 28, 50, 72, 94, -1, -1}, // Version 21
|
||||
// { 6, 26, 50, 74, 98, -1, -1}, // Version 22
|
||||
// { 6, 30, 54, 78, 102, -1, -1}, // Version 23
|
||||
// { 6, 28, 54, 80, 106, -1, -1}, // Version 24
|
||||
// { 6, 32, 58, 84, 110, -1, -1}, // Version 25
|
||||
// { 6, 30, 58, 86, 114, -1, -1}, // Version 26
|
||||
// { 6, 34, 62, 90, 118, -1, -1}, // Version 27
|
||||
// { 6, 26, 50, 74, 98, 122, -1}, // Version 28
|
||||
// { 6, 30, 54, 78, 102, 126, -1}, // Version 29
|
||||
// { 6, 26, 52, 78, 104, 130, -1}, // Version 30
|
||||
// { 6, 30, 56, 82, 108, 134, -1}, // Version 31
|
||||
// { 6, 34, 60, 86, 112, 138, -1}, // Version 32
|
||||
// { 6, 30, 58, 86, 114, 142, -1}, // Version 33
|
||||
// { 6, 34, 62, 90, 118, 146, -1}, // Version 34
|
||||
// { 6, 30, 54, 78, 102, 126, 150}, // Version 35
|
||||
// { 6, 24, 50, 76, 102, 128, 154}, // Version 36
|
||||
// { 6, 28, 54, 80, 106, 132, 158}, // Version 37
|
||||
// { 6, 32, 58, 84, 110, 136, 162}, // Version 38
|
||||
// { 6, 26, 54, 82, 110, 138, 166}, // Version 39
|
||||
// { 6, 30, 58, 86, 114, 142, 170}, // Version 40
|
||||
// };
|
||||
|
||||
// // Type info cells at the left top corner.
|
||||
// private static final int[][] TYPE_INFO_COORDINATES = {
|
||||
// {8, 0},
|
||||
// {8, 1},
|
||||
// {8, 2},
|
||||
// {8, 3},
|
||||
// {8, 4},
|
||||
// {8, 5},
|
||||
// {8, 7},
|
||||
// {8, 8},
|
||||
// {7, 8},
|
||||
// {5, 8},
|
||||
// {4, 8},
|
||||
// {3, 8},
|
||||
// {2, 8},
|
||||
// {1, 8},
|
||||
// {0, 8},
|
||||
// };
|
||||
|
||||
// // From Appendix D in JISX0510:2004 (p. 67)
|
||||
// private static final int VERSION_INFO_POLY = 0x1f25; // 1 1111 0010 0101
|
||||
|
||||
// // From Appendix C in JISX0510:2004 (p.65).
|
||||
// private static final int TYPE_INFO_POLY = 0x537;
|
||||
// private static final int TYPE_INFO_MASK_PATTERN = 0x5412;
|
||||
|
||||
// // Set all cells to -1. -1 means that the cell is empty (not set yet).
|
||||
// //
|
||||
// // JAVAPORT: We shouldn't need to do this at all. The code should be rewritten to begin encoding
|
||||
// // with the ByteMatrix initialized all to zero.
|
||||
// static void clearMatrix(ByteMatrix matrix) {
|
||||
// matrix.clear((byte) -1);
|
||||
// }
|
||||
|
||||
// // Build 2D matrix of QR Code from "dataBits" with "ecLevel", "version" and "getMaskPattern". On
|
||||
// // success, store the result in "matrix" and return true.
|
||||
// static void buildMatrix(BitArray dataBits,
|
||||
// ErrorCorrectionLevel ecLevel,
|
||||
// Version version,
|
||||
// int maskPattern,
|
||||
// ByteMatrix matrix) throws WriterException {
|
||||
// clearMatrix(matrix);
|
||||
// embedBasicPatterns(version, matrix);
|
||||
// // Type information appear with any version.
|
||||
// embedTypeInfo(ecLevel, maskPattern, matrix);
|
||||
// // Version info appear if version >= 7.
|
||||
// maybeEmbedVersionInfo(version, matrix);
|
||||
// // Data should be embedded at end.
|
||||
// embedDataBits(dataBits, maskPattern, matrix);
|
||||
// }
|
||||
|
||||
// // Embed basic patterns. On success, modify the matrix and return true.
|
||||
// // The basic patterns are:
|
||||
// // - Position detection patterns
|
||||
// // - Timing patterns
|
||||
// // - Dark dot at the left bottom corner
|
||||
// // - Position adjustment patterns, if need be
|
||||
// static void embedBasicPatterns(Version version, ByteMatrix matrix) throws WriterException {
|
||||
// // Let's get started with embedding big squares at corners.
|
||||
// embedPositionDetectionPatternsAndSeparators(matrix);
|
||||
// // Then, embed the dark dot at the left bottom corner.
|
||||
// embedDarkDotAtLeftBottomCorner(matrix);
|
||||
|
||||
// // Position adjustment patterns appear if version >= 2.
|
||||
// maybeEmbedPositionAdjustmentPatterns(version, matrix);
|
||||
// // Timing patterns should be embedded after position adj. patterns.
|
||||
// embedTimingPatterns(matrix);
|
||||
// }
|
||||
|
||||
// // Embed type information. On success, modify the matrix.
|
||||
// static void embedTypeInfo(ErrorCorrectionLevel ecLevel, int maskPattern, ByteMatrix matrix)
|
||||
// throws WriterException {
|
||||
// BitArray typeInfoBits = new BitArray();
|
||||
// makeTypeInfoBits(ecLevel, maskPattern, typeInfoBits);
|
||||
|
||||
// for (int i = 0; i < typeInfoBits.getSize(); ++i) {
|
||||
// // Place bits in LSB to MSB order. LSB (least significant bit) is the last value in
|
||||
// // "typeInfoBits".
|
||||
// boolean bit = typeInfoBits.get(typeInfoBits.getSize() - 1 - i);
|
||||
|
||||
// // Type info bits at the left top corner. See 8.9 of JISX0510:2004 (p.46).
|
||||
// int x1 = TYPE_INFO_COORDINATES[i][0];
|
||||
// int y1 = TYPE_INFO_COORDINATES[i][1];
|
||||
// matrix.set(x1, y1, bit);
|
||||
|
||||
// if (i < 8) {
|
||||
// // Right top corner.
|
||||
// int x2 = matrix.getWidth() - i - 1;
|
||||
// int y2 = 8;
|
||||
// matrix.set(x2, y2, bit);
|
||||
// } else {
|
||||
// // Left bottom corner.
|
||||
// int x2 = 8;
|
||||
// int y2 = matrix.getHeight() - 7 + (i - 8);
|
||||
// matrix.set(x2, y2, bit);
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
|
||||
// // Embed version information if need be. On success, modify the matrix and return true.
|
||||
// // See 8.10 of JISX0510:2004 (p.47) for how to embed version information.
|
||||
// static void maybeEmbedVersionInfo(Version version, ByteMatrix matrix) throws WriterException {
|
||||
// if (version.getVersionNumber() < 7) { // Version info is necessary if version >= 7.
|
||||
// return; // Don't need version info.
|
||||
// }
|
||||
// BitArray versionInfoBits = new BitArray();
|
||||
// makeVersionInfoBits(version, versionInfoBits);
|
||||
|
||||
// int bitIndex = 6 * 3 - 1; // It will decrease from 17 to 0.
|
||||
// for (int i = 0; i < 6; ++i) {
|
||||
// for (int j = 0; j < 3; ++j) {
|
||||
// // Place bits in LSB (least significant bit) to MSB order.
|
||||
// boolean bit = versionInfoBits.get(bitIndex);
|
||||
// bitIndex--;
|
||||
// // Left bottom corner.
|
||||
// matrix.set(i, matrix.getHeight() - 11 + j, bit);
|
||||
// // Right bottom corner.
|
||||
// matrix.set(matrix.getHeight() - 11 + j, i, bit);
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
|
||||
// // Embed "dataBits" using "getMaskPattern". On success, modify the matrix and return true.
|
||||
// // For debugging purposes, it skips masking process if "getMaskPattern" is -1.
|
||||
// // See 8.7 of JISX0510:2004 (p.38) for how to embed data bits.
|
||||
// static void embedDataBits(BitArray dataBits, int maskPattern, ByteMatrix matrix)
|
||||
// throws WriterException {
|
||||
// int bitIndex = 0;
|
||||
// int direction = -1;
|
||||
// // Start from the right bottom cell.
|
||||
// int x = matrix.getWidth() - 1;
|
||||
// int y = matrix.getHeight() - 1;
|
||||
// while (x > 0) {
|
||||
// // Skip the vertical timing pattern.
|
||||
// if (x == 6) {
|
||||
// x -= 1;
|
||||
// }
|
||||
// while (y >= 0 && y < matrix.getHeight()) {
|
||||
// for (int i = 0; i < 2; ++i) {
|
||||
// int xx = x - i;
|
||||
// // Skip the cell if it's not empty.
|
||||
// if (!isEmpty(matrix.get(xx, y))) {
|
||||
// continue;
|
||||
// }
|
||||
// boolean bit;
|
||||
// if (bitIndex < dataBits.getSize()) {
|
||||
// bit = dataBits.get(bitIndex);
|
||||
// ++bitIndex;
|
||||
// } else {
|
||||
// // Padding bit. If there is no bit left, we'll fill the left cells with 0, as described
|
||||
// // in 8.4.9 of JISX0510:2004 (p. 24).
|
||||
// bit = false;
|
||||
// }
|
||||
|
||||
// // Skip masking if mask_pattern is -1.
|
||||
// if (maskPattern != -1 && MaskUtil.getDataMaskBit(maskPattern, xx, y)) {
|
||||
// bit = !bit;
|
||||
// }
|
||||
// matrix.set(xx, y, bit);
|
||||
// }
|
||||
// y += direction;
|
||||
// }
|
||||
// direction = -direction; // Reverse the direction.
|
||||
// y += direction;
|
||||
// x -= 2; // Move to the left.
|
||||
// }
|
||||
// // All bits should be consumed.
|
||||
// if (bitIndex != dataBits.getSize()) {
|
||||
// throw new WriterException("Not all bits consumed: " + bitIndex + '/' + dataBits.getSize());
|
||||
// }
|
||||
// }
|
||||
|
||||
// // Return the position of the most significant bit set (to one) in the "value". The most
|
||||
// // significant bit is position 32. If there is no bit set, return 0. Examples:
|
||||
// // - findMSBSet(0) => 0
|
||||
// // - findMSBSet(1) => 1
|
||||
// // - findMSBSet(255) => 8
|
||||
// static int findMSBSet(int value) {
|
||||
// int numDigits = 0;
|
||||
// while (value != 0) {
|
||||
// value >>>= 1;
|
||||
// ++numDigits;
|
||||
// }
|
||||
// return numDigits;
|
||||
// }
|
||||
|
||||
// // Calculate BCH (Bose-Chaudhuri-Hocquenghem) code for "value" using polynomial "poly". The BCH
|
||||
// // code is used for encoding type information and version information.
|
||||
// // Example: Calculation of version information of 7.
|
||||
// // f(x) is created from 7.
|
||||
// // - 7 = 000111 in 6 bits
|
||||
// // - f(x) = x^2 + x^1 + x^0
|
||||
// // g(x) is given by the standard (p. 67)
|
||||
// // - g(x) = x^12 + x^11 + x^10 + x^9 + x^8 + x^5 + x^2 + 1
|
||||
// // Multiply f(x) by x^(18 - 6)
|
||||
// // - f'(x) = f(x) * x^(18 - 6)
|
||||
// // - f'(x) = x^14 + x^13 + x^12
|
||||
// // Calculate the remainder of f'(x) / g(x)
|
||||
// // x^2
|
||||
// // __________________________________________________
|
||||
// // g(x) )x^14 + x^13 + x^12
|
||||
// // x^14 + x^13 + x^12 + x^11 + x^10 + x^7 + x^4 + x^2
|
||||
// // --------------------------------------------------
|
||||
// // x^11 + x^10 + x^7 + x^4 + x^2
|
||||
// //
|
||||
// // The remainder is x^11 + x^10 + x^7 + x^4 + x^2
|
||||
// // Encode it in binary: 110010010100
|
||||
// // The return value is 0xc94 (1100 1001 0100)
|
||||
// //
|
||||
// // Since all coefficients in the polynomials are 1 or 0, we can do the calculation by bit
|
||||
// // operations. We don't care if cofficients are positive or negative.
|
||||
// static int calculateBCHCode(int value, int poly) {
|
||||
// // If poly is "1 1111 0010 0101" (version info poly), msbSetInPoly is 13. We'll subtract 1
|
||||
// // from 13 to make it 12.
|
||||
// int msbSetInPoly = findMSBSet(poly);
|
||||
// value <<= msbSetInPoly - 1;
|
||||
// // Do the division business using exclusive-or operations.
|
||||
// while (findMSBSet(value) >= msbSetInPoly) {
|
||||
// value ^= poly << (findMSBSet(value) - msbSetInPoly);
|
||||
// }
|
||||
// // Now the "value" is the remainder (i.e. the BCH code)
|
||||
// return value;
|
||||
// }
|
||||
|
||||
// // Make bit vector of type information. On success, store the result in "bits" and return true.
|
||||
// // Encode error correction level and mask pattern. See 8.9 of
|
||||
// // JISX0510:2004 (p.45) for details.
|
||||
// static void makeTypeInfoBits(ErrorCorrectionLevel ecLevel, int maskPattern, BitArray bits)
|
||||
// throws WriterException {
|
||||
// if (!QRCode.isValidMaskPattern(maskPattern)) {
|
||||
// throw new WriterException("Invalid mask pattern");
|
||||
// }
|
||||
// int typeInfo = (ecLevel.getBits() << 3) | maskPattern;
|
||||
// bits.appendBits(typeInfo, 5);
|
||||
|
||||
// int bchCode = calculateBCHCode(typeInfo, TYPE_INFO_POLY);
|
||||
// bits.appendBits(bchCode, 10);
|
||||
|
||||
// BitArray maskBits = new BitArray();
|
||||
// maskBits.appendBits(TYPE_INFO_MASK_PATTERN, 15);
|
||||
// bits.xor(maskBits);
|
||||
|
||||
// if (bits.getSize() != 15) { // Just in case.
|
||||
// throw new WriterException("should not happen but we got: " + bits.getSize());
|
||||
// }
|
||||
// }
|
||||
|
||||
// // Make bit vector of version information. On success, store the result in "bits" and return true.
|
||||
// // See 8.10 of JISX0510:2004 (p.45) for details.
|
||||
// static void makeVersionInfoBits(Version version, BitArray bits) throws WriterException {
|
||||
// bits.appendBits(version.getVersionNumber(), 6);
|
||||
// int bchCode = calculateBCHCode(version.getVersionNumber(), VERSION_INFO_POLY);
|
||||
// bits.appendBits(bchCode, 12);
|
||||
|
||||
// if (bits.getSize() != 18) { // Just in case.
|
||||
// throw new WriterException("should not happen but we got: " + bits.getSize());
|
||||
// }
|
||||
// }
|
||||
|
||||
// // Check if "value" is empty.
|
||||
// private static boolean isEmpty(int value) {
|
||||
// return value == -1;
|
||||
// }
|
||||
|
||||
// private static void embedTimingPatterns(ByteMatrix matrix) {
|
||||
// // -8 is for skipping position detection patterns (size 7), and two horizontal/vertical
|
||||
// // separation patterns (size 1). Thus, 8 = 7 + 1.
|
||||
// for (int i = 8; i < matrix.getWidth() - 8; ++i) {
|
||||
// int bit = (i + 1) % 2;
|
||||
// // Horizontal line.
|
||||
// if (isEmpty(matrix.get(i, 6))) {
|
||||
// matrix.set(i, 6, bit);
|
||||
// }
|
||||
// // Vertical line.
|
||||
// if (isEmpty(matrix.get(6, i))) {
|
||||
// matrix.set(6, i, bit);
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
|
||||
// // Embed the lonely dark dot at left bottom corner. JISX0510:2004 (p.46)
|
||||
// private static void embedDarkDotAtLeftBottomCorner(ByteMatrix matrix) throws WriterException {
|
||||
// if (matrix.get(8, matrix.getHeight() - 8) == 0) {
|
||||
// throw new WriterException();
|
||||
// }
|
||||
// matrix.set(8, matrix.getHeight() - 8, 1);
|
||||
// }
|
||||
|
||||
// private static void embedHorizontalSeparationPattern(int xStart,
|
||||
// int yStart,
|
||||
// ByteMatrix matrix) throws WriterException {
|
||||
// for (int x = 0; x < 8; ++x) {
|
||||
// if (!isEmpty(matrix.get(xStart + x, yStart))) {
|
||||
// throw new WriterException();
|
||||
// }
|
||||
// matrix.set(xStart + x, yStart, 0);
|
||||
// }
|
||||
// }
|
||||
|
||||
// private static void embedVerticalSeparationPattern(int xStart,
|
||||
// int yStart,
|
||||
// ByteMatrix matrix) throws WriterException {
|
||||
// for (int y = 0; y < 7; ++y) {
|
||||
// if (!isEmpty(matrix.get(xStart, yStart + y))) {
|
||||
// throw new WriterException();
|
||||
// }
|
||||
// matrix.set(xStart, yStart + y, 0);
|
||||
// }
|
||||
// }
|
||||
|
||||
// // Note that we cannot unify the function with embedPositionDetectionPattern() despite they are
|
||||
// // almost identical, since we cannot write a function that takes 2D arrays in different sizes in
|
||||
// // C/C++. We should live with the fact.
|
||||
// private static void embedPositionAdjustmentPattern(int xStart, int yStart, ByteMatrix matrix) {
|
||||
// for (int y = 0; y < 5; ++y) {
|
||||
// for (int x = 0; x < 5; ++x) {
|
||||
// matrix.set(xStart + x, yStart + y, POSITION_ADJUSTMENT_PATTERN[y][x]);
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
|
||||
// private static void embedPositionDetectionPattern(int xStart, int yStart, ByteMatrix matrix) {
|
||||
// for (int y = 0; y < 7; ++y) {
|
||||
// for (int x = 0; x < 7; ++x) {
|
||||
// matrix.set(xStart + x, yStart + y, POSITION_DETECTION_PATTERN[y][x]);
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
|
||||
// // Embed position detection patterns and surrounding vertical/horizontal separators.
|
||||
// private static void embedPositionDetectionPatternsAndSeparators(ByteMatrix matrix) throws WriterException {
|
||||
// // Embed three big squares at corners.
|
||||
// int pdpWidth = POSITION_DETECTION_PATTERN[0].length;
|
||||
// // Left top corner.
|
||||
// embedPositionDetectionPattern(0, 0, matrix);
|
||||
// // Right top corner.
|
||||
// embedPositionDetectionPattern(matrix.getWidth() - pdpWidth, 0, matrix);
|
||||
// // Left bottom corner.
|
||||
// embedPositionDetectionPattern(0, matrix.getWidth() - pdpWidth, matrix);
|
||||
|
||||
// // Embed horizontal separation patterns around the squares.
|
||||
// int hspWidth = 8;
|
||||
// // Left top corner.
|
||||
// embedHorizontalSeparationPattern(0, hspWidth - 1, matrix);
|
||||
// // Right top corner.
|
||||
// embedHorizontalSeparationPattern(matrix.getWidth() - hspWidth,
|
||||
// hspWidth - 1, matrix);
|
||||
// // Left bottom corner.
|
||||
// embedHorizontalSeparationPattern(0, matrix.getWidth() - hspWidth, matrix);
|
||||
|
||||
// // Embed vertical separation patterns around the squares.
|
||||
// int vspSize = 7;
|
||||
// // Left top corner.
|
||||
// embedVerticalSeparationPattern(vspSize, 0, matrix);
|
||||
// // Right top corner.
|
||||
// embedVerticalSeparationPattern(matrix.getHeight() - vspSize - 1, 0, matrix);
|
||||
// // Left bottom corner.
|
||||
// embedVerticalSeparationPattern(vspSize, matrix.getHeight() - vspSize,
|
||||
// matrix);
|
||||
// }
|
||||
|
||||
// // Embed position adjustment patterns if need be.
|
||||
// private static void maybeEmbedPositionAdjustmentPatterns(Version version, ByteMatrix matrix) {
|
||||
// if (version.getVersionNumber() < 2) { // The patterns appear if version >= 2
|
||||
// return;
|
||||
// }
|
||||
// int index = version.getVersionNumber() - 1;
|
||||
// int[] coordinates = POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE[index];
|
||||
// int numCoordinates = POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE[index].length;
|
||||
// for (int i = 0; i < numCoordinates; ++i) {
|
||||
// for (int j = 0; j < numCoordinates; ++j) {
|
||||
// int y = coordinates[i];
|
||||
// int x = coordinates[j];
|
||||
// if (x == -1 || y == -1) {
|
||||
// continue;
|
||||
// }
|
||||
// // If the cell is unset, we embed the position adjustment pattern here.
|
||||
// if (isEmpty(matrix.get(x, y))) {
|
||||
// // -2 is necessary since the x/y coordinates point to the center of the pattern, not the
|
||||
// // left top corner.
|
||||
// embedPositionAdjustmentPattern(x - 2, y - 2, matrix);
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
|
||||
//}
|
|
@ -0,0 +1,82 @@
|
|||
#include "QRCode.h"
|
||||
|
||||
#include <sstream>
|
||||
|
||||
namespace zxing {
|
||||
namespace qrcode {
|
||||
|
||||
QRCode::QRCode() :
|
||||
mode_ptr_(NULL),
|
||||
ecLevel_ptr_(NULL),
|
||||
version_ptr_(NULL),
|
||||
maskPattern_(-1),
|
||||
matrix_ptr_(NULL) {}
|
||||
|
||||
const Mode *QRCode::getMode() const {
|
||||
return mode_ptr_;
|
||||
}
|
||||
|
||||
const ErrorCorrectionLevel *QRCode::getECLevel() const {
|
||||
return ecLevel_ptr_;
|
||||
}
|
||||
|
||||
const Version *QRCode::getVersion() const {
|
||||
return version_ptr_;
|
||||
}
|
||||
|
||||
const int QRCode::getMaskPattern() const {
|
||||
return maskPattern_;
|
||||
}
|
||||
|
||||
const ByteMatrix *QRCode::getMatrix() const{
|
||||
return matrix_ptr_;
|
||||
}
|
||||
|
||||
const std::string QRCode::toString() {
|
||||
std::stringstream result;
|
||||
result << "<<\n";
|
||||
result << " mode: {unimpl}";
|
||||
//result << mode_;
|
||||
result << "\n ecLevel: {unimpl}";
|
||||
//result << ecLevel_;
|
||||
result << "\n version: ";
|
||||
//result << version_;
|
||||
result << "\n maskPattern: ";
|
||||
result << maskPattern_;
|
||||
// if (matrix_ == null) {
|
||||
// result.append("\n matrix: null\n");
|
||||
// } else {
|
||||
result << "\n matrix:\n";
|
||||
result << matrix_ptr_->toString();
|
||||
// }
|
||||
result << ">>\n";
|
||||
return result.str();
|
||||
}
|
||||
|
||||
void QRCode::setMode(const Mode& value) {
|
||||
mode_ptr_ = new Mode(value);
|
||||
}
|
||||
|
||||
/*
|
||||
* Make copy constructors for all the used classes.
|
||||
* Also make destructors for all
|
||||
*/
|
||||
|
||||
void QRCode::setECLevel(const ErrorCorrectionLevel& value) {
|
||||
//ecLevel_ptr_ = value;
|
||||
}
|
||||
|
||||
void QRCode::setVersion(const Version& version) {
|
||||
//version_ptr_ = version;
|
||||
}
|
||||
|
||||
void QRCode::setMaskPattern(int value) {
|
||||
//maskPattern_ptr_ = value;
|
||||
}
|
||||
|
||||
void QRCode::setMatrix(const ByteMatrix &value) {
|
||||
//matrix_ptr_ = value;
|
||||
}
|
||||
|
||||
}
|
||||
}
|
|
@ -0,0 +1,48 @@
|
|||
#ifndef QRCODE_H
|
||||
#define QRCODE_H
|
||||
|
||||
#include <zxing/qrcode/decoder/Mode.h>
|
||||
#include <zxing/qrcode/Version.h>
|
||||
#include <zxing/qrcode/ErrorCorrectionLevel.h>
|
||||
#include "ByteMatrix.h"
|
||||
#include <string>
|
||||
|
||||
namespace zxing {
|
||||
namespace qrcode {
|
||||
|
||||
class QRCode
|
||||
{
|
||||
private:
|
||||
static const int NUM_MASK_PATTERNS = 8;
|
||||
|
||||
Mode* mode_ptr_;
|
||||
ErrorCorrectionLevel* ecLevel_ptr_;
|
||||
Version* version_ptr_;
|
||||
int maskPattern_;
|
||||
ByteMatrix* matrix_ptr_;
|
||||
|
||||
public:
|
||||
|
||||
QRCode();
|
||||
const Mode* getMode() const;
|
||||
const ErrorCorrectionLevel* getECLevel() const;
|
||||
const Version* getVersion() const;
|
||||
const int getMaskPattern() const;
|
||||
const ByteMatrix* getMatrix() const;
|
||||
const std::string toString();
|
||||
void setMode(const Mode& value);
|
||||
void setECLevel(const ErrorCorrectionLevel& value);
|
||||
void setVersion(const Version& version);
|
||||
void setMaskPattern(int value);
|
||||
void setMatrix(const ByteMatrix& value);
|
||||
|
||||
static bool isValidMaskPattern(int maskPattern) {
|
||||
return maskPattern >= 0 && maskPattern < NUM_MASK_PATTERNS;
|
||||
}
|
||||
|
||||
};
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
#endif //QRCODE_H
|
Loading…
Reference in New Issue