// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#ifndef _BC_QRCODERENCODER_H_
#define _BC_QRCODERENCODER_H_
class Make_Pair;
class CBC_QRCoder;
class CBC_QRCoderErrorCorrectionLevel;
class CBC_QRCoderMode;
class CBC_QRCoderBitVector;
class CBC_CommonByteArray;
class CBC_CommonByteMatrix;
class CBC_QRCoderEncoder;
class CBC_QRCoderEncoder
{
private:
    const static int32_t m_alphaNumbericTable[96];
public:
    CBC_QRCoderEncoder();
    virtual ~CBC_QRCoderEncoder();

    static void Encode(const CFX_ByteString &content, CBC_QRCoderErrorCorrectionLevel* ecLevel, CBC_QRCoder *qrCode, int32_t &e, int32_t versionSpecify = 0);
    static void Encode(const CFX_WideString &content, CBC_QRCoderErrorCorrectionLevel* ecLevel, CBC_QRCoder *qrCode, int32_t &e);
    static void EncodeWithSpecifyVersion(const CFX_ByteString &content, CBC_QRCoderErrorCorrectionLevel* ecLevel,
                                         CBC_QRCoder *qrCode, int32_t versionSpecify, int32_t &e);
    static void EncodeWithAutoVersion(const CFX_ByteString &content, CBC_QRCoderErrorCorrectionLevel* ecLevel, CBC_QRCoder *qrCode, int32_t &e);
    static CBC_QRCoderMode* ChooseMode(const CFX_ByteString & content, CFX_ByteString encoding);
    static int32_t GetAlphaNumericCode(int32_t code);
    static void AppendECI(CBC_QRCoderBitVector* bits);
    static void AppendBytes(const CFX_ByteString &content, CBC_QRCoderMode* mode, CBC_QRCoderBitVector* bits, CFX_ByteString encoding, int32_t &e);
    static void AppendNumericBytes(const CFX_ByteString &content, CBC_QRCoderBitVector* bits, int32_t &e);
    static void AppendAlphaNumericBytes(const CFX_ByteString &content, CBC_QRCoderBitVector* bits, int32_t &e);
    static void Append8BitBytes(const CFX_ByteString &content, CBC_QRCoderBitVector* bits, CFX_ByteString encoding, int32_t &e);
    static void Append8BitBytes(CFX_ByteArray &bytes, CBC_QRCoderBitVector *bits, int32_t &e);
    static void AppendKanjiBytes(const CFX_ByteString &content, CBC_QRCoderBitVector* bits, int32_t &e);
    static void AppendGBKBytes(const CFX_ByteString &content, CBC_QRCoderBitVector* bits, int32_t &e);
    static void InitQRCode(int32_t numInputBytes, int32_t versionNumber,
                           CBC_QRCoderErrorCorrectionLevel* ecLevel, CBC_QRCoderMode* mode, CBC_QRCoder* qrCode, int32_t &e);
    static void InitQRCode(int32_t numInputBytes, CBC_QRCoderErrorCorrectionLevel* ecLevel, CBC_QRCoderMode* mode, CBC_QRCoder* qrCode, int32_t &e);
    static void AppendModeInfo(CBC_QRCoderMode* mode, CBC_QRCoderBitVector* bits, int32_t &e);
    static void AppendLengthInfo(int32_t numLetters, int32_t version, CBC_QRCoderMode* mode, CBC_QRCoderBitVector* bits, int32_t &e);

    static void InterleaveWithECBytes(CBC_QRCoderBitVector* bits, int32_t numTotalBytes, int32_t numDataBytes, int32_t numRSBlocks, CBC_QRCoderBitVector* result, int32_t &e);
    static void GetNumDataBytesAndNumECBytesForBlockID(int32_t numTotalBytes, int32_t numDataBytes,
            int32_t numRSBlocks, int32_t blockID,
            int32_t &numDataBytesInBlock, int32_t& numECBytesInBlocks);
    static CBC_CommonByteArray* GenerateECBytes(CBC_CommonByteArray* dataBytes, int32_t numEcBytesInBlock, int32_t &e);
    static int32_t ChooseMaskPattern(CBC_QRCoderBitVector* bits, CBC_QRCoderErrorCorrectionLevel* ecLevel,
                                      int32_t version, CBC_CommonByteMatrix* matrix, int32_t &e);
    static int32_t CalculateMaskPenalty(CBC_CommonByteMatrix* matrix);
    static void TerminateBits(int32_t numDataBytes, CBC_QRCoderBitVector* bits, int32_t &e);
    static int32_t GetSpanByVersion(CBC_QRCoderMode *modeFirst, CBC_QRCoderMode *modeSecond, int32_t versionNum, int32_t &e);
    static void MergeString(CFX_PtrArray &result, int32_t versionNum, int32_t &e);
    static void SplitString(const CFX_ByteString &content, CFX_PtrArray &result);
    static void AppendDataModeLenghInfo(CFX_PtrArray &splitResult, CBC_QRCoderBitVector &headerAndDataBits,	CBC_QRCoderMode *tempMode, CBC_QRCoder *qrCode, CFX_ByteString &encoding, int32_t &e);
};
#endif