file_info_impl.h

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#ifndef _FOOBAR2000_SDK_FILE_INFO_IMPL_H_
#define _FOOBAR2000_SDK_FILE_INFO_IMPL_H_

namespace file_info_impl_utils {

    struct info_entry {
        void init(const char * p_name,t_size p_name_len,const char * p_value,t_size p_value_len) {
            m_name.set_string(p_name,p_name_len);
            m_value.set_string(p_value,p_value_len);
        }
        
        inline const char * get_name() const {return m_name;}
        inline const char * get_value() const {return m_value;}

        pfc::string_simple m_name,m_value;
    };

    typedef pfc::array_t<info_entry,pfc::alloc_fast> info_entry_array;

}

namespace pfc {
    template<> class traits_t<file_info_impl_utils::info_entry> : public traits_t<pfc::string_simple> {};
};


namespace file_info_impl_utils {
    class info_storage
    {
    public:
        t_size add_item(const char * p_name,t_size p_name_length,const char * p_value,t_size p_value_length);
        void remove_mask(const bit_array & p_mask); 
        inline t_size get_count() const {return m_info.get_count();}
        inline const char * get_name(t_size p_index) const {return m_info[p_index].get_name();}
        inline const char * get_value(t_size p_index) const {return m_info[p_index].get_value();}
        void copy_from(const file_info & p_info);
    private:
        info_entry_array m_info;
    };
}


namespace file_info_impl_utils {
    typedef pfc::array_hybrid_t<pfc::string_simple,1,pfc::alloc_fast > meta_value_array;
    struct meta_entry {
        meta_entry() {}
        meta_entry(const char * p_name,t_size p_name_len,const char * p_value,t_size p_value_len);

        void remove_values(const bit_array & p_mask);
        void insert_value(t_size p_value_index,const char * p_value,t_size p_value_length);
        void modify_value(t_size p_value_index,const char * p_value,t_size p_value_length);

        inline const char * get_name() const {return m_name;}
        inline const char * get_value(t_size p_index) const {return m_values[p_index];}
        inline t_size get_value_count() const {return m_values.get_size();}
        

        pfc::string_simple m_name;
        meta_value_array m_values;
    };
    typedef pfc::array_hybrid_t<meta_entry,10, pfc::alloc_fast> meta_entry_array;
}
namespace pfc {
    template<> class traits_t<file_info_impl_utils::meta_entry> : public pfc::traits_combined<pfc::string_simple,file_info_impl_utils::meta_value_array> {};
}


namespace file_info_impl_utils {
    class meta_storage
    {
    public:
        t_size add_entry(const char * p_name,t_size p_name_length,const char * p_value,t_size p_value_length);
        void insert_value(t_size p_index,t_size p_value_index,const char * p_value,t_size p_value_length);
        void modify_value(t_size p_index,t_size p_value_index,const char * p_value,t_size p_value_length);
        void remove_values(t_size p_index,const bit_array & p_mask);
        void remove_mask(const bit_array & p_mask);
        void copy_from(const file_info & p_info);

        inline void reorder(const t_size * p_order);

        inline t_size get_count() const {return m_data.get_size();}
        
        inline const char * get_name(t_size p_index) const {PFC_ASSERT(p_index < m_data.get_size()); return m_data[p_index].get_name();}
        inline const char * get_value(t_size p_index,t_size p_value_index) const {PFC_ASSERT(p_index < m_data.get_size()); return m_data[p_index].get_value(p_value_index);}
        inline t_size get_value_count(t_size p_index) const {PFC_ASSERT(p_index < m_data.get_size()); return m_data[p_index].get_value_count();}

    private:
        meta_entry_array m_data;
    };
}

class file_info_impl : public file_info
{
public:
    file_info_impl(const file_info_impl & p_source);
    file_info_impl(const file_info & p_source);
    file_info_impl();
    ~file_info_impl();

    double      get_length() const;
    void        set_length(double p_length);

    void        copy_meta(const file_info & p_source);//virtualized for performance reasons, can be faster in two-pass
    void        copy_info(const file_info & p_source);//virtualized for performance reasons, can be faster in two-pass
    
    t_size  meta_get_count() const;
    const char* meta_enum_name(t_size p_index) const;
    t_size  meta_enum_value_count(t_size p_index) const;
    const char* meta_enum_value(t_size p_index,t_size p_value_number) const;
    t_size  meta_set_ex(const char * p_name,t_size p_name_length,const char * p_value,t_size p_value_length);
    void        meta_insert_value_ex(t_size p_index,t_size p_value_index,const char * p_value,t_size p_value_length);
    void        meta_remove_mask(const bit_array & p_mask);
    void        meta_reorder(const t_size * p_order);
    void        meta_remove_values(t_size p_index,const bit_array & p_mask);
    void        meta_modify_value_ex(t_size p_index,t_size p_value_index,const char * p_value,t_size p_value_length);

    t_size  info_get_count() const;
    const char* info_enum_name(t_size p_index) const;
    const char* info_enum_value(t_size p_index) const;
    t_size  info_set_ex(const char * p_name,t_size p_name_length,const char * p_value,t_size p_value_length);
    void        info_remove_mask(const bit_array & p_mask);

    const file_info_impl & operator=(const file_info_impl & p_source);

    replaygain_info get_replaygain() const;
    void            set_replaygain(const replaygain_info & p_info);

protected:
    t_size  meta_set_nocheck_ex(const char * p_name,t_size p_name_length,const char * p_value,t_size p_value_length);
    t_size  info_set_nocheck_ex(const char * p_name,t_size p_name_length,const char * p_value,t_size p_value_length);
private:


    file_info_impl_utils::meta_storage m_meta;
    file_info_impl_utils::info_storage m_info;
    

    double m_length;

    replaygain_info m_replaygain;
};

#endif