#include <qpdf/QPDFStreamFilter.hh>

#include <memory>

#include <vector>

#ifndef SF_FLATELZWDECODE_HH

# define SF_FLATELZWDECODE_HH

class SF_FlateLzwDecode final: public QPDFStreamFilter

{

  public:

    SF_FlateLzwDecode(bool lzw) :

        lzw(lzw)

    {

    }

    ~SF_FlateLzwDecode() final = default;

    bool setDecodeParms(QPDFObjectHandle decode_parms) final;

    Pipeline* getDecodePipeline(Pipeline* next) final;

    static std::shared_ptr<QPDFStreamFilter>

    flate_factory()

    {

        return std::make_shared<SF_FlateLzwDecode>(false);

    }

    static std::shared_ptr<QPDFStreamFilter>

    lzw_factory()

    {

        return std::make_shared<SF_FlateLzwDecode>(true);

    }

  private:

    bool lzw{};

    // Defaults as per the PDF spec

    int predictor{1};

    int columns{1};

    int colors{1};

    int bits_per_component{8};

    bool early_code_change{true};

    std::vector<std::unique_ptr<Pipeline>> pipelines;

};

#endif // SF_FLATELZWDECODE_HH