tag_processor.h

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PFC_DECLARE_EXCEPTION(exception_tag_not_found,exception_io_data,"Tag not found");

class NOVTABLE tag_write_callback {
public:
    virtual bool open_temp_file(service_ptr_t<file> & p_out,abort_callback & p_abort) = 0;  
protected:
    tag_write_callback() {}
    ~tag_write_callback() {}
private:
    tag_write_callback(const tag_write_callback &) {throw pfc::exception_not_implemented();}
    const tag_write_callback & operator=(const tag_write_callback &) {throw pfc::exception_not_implemented();}
};

class tag_write_callback_dummy : public tag_write_callback {
public:
    bool open_temp_file(service_ptr_t<file> & p_out,abort_callback & p_abort) {return false;}
};

class NOVTABLE tag_processor_id3v2 : public service_base
{
public:
    virtual void read(const service_ptr_t<file> & p_file,file_info & p_info,abort_callback & p_abort) = 0;
    virtual void write(const service_ptr_t<file> & p_file,const file_info & p_info,abort_callback & p_abort) = 0;
    virtual void write_ex(tag_write_callback & p_callback,const service_ptr_t<file> & p_file,const file_info & p_info,abort_callback & p_abort) = 0;

    static bool g_get(service_ptr_t<tag_processor_id3v2> & p_out);
    static void g_skip(const service_ptr_t<file> & p_file,t_filesize & p_size_skipped,abort_callback & p_abort);
    static void g_skip_at(const service_ptr_t<file> & p_file,t_filesize p_base, t_filesize & p_size_skipped,abort_callback & p_abort);
    static t_size g_multiskip(const service_ptr_t<file> & p_file,t_filesize & p_size_skipped,abort_callback & p_abort);
    static void g_remove(const service_ptr_t<file> & p_file,t_filesize & p_size_removed,abort_callback & p_abort);
    static void g_remove_ex(tag_write_callback & p_callback,const service_ptr_t<file> & p_file,t_filesize & p_size_removed,abort_callback & p_abort);

    FB2K_MAKE_SERVICE_INTERFACE_ENTRYPOINT(tag_processor_id3v2);
};

class NOVTABLE tag_processor_trailing : public service_base
{
public:
    enum {
        flag_apev2 = 1,
        flag_id3v1 = 2,
    };

    virtual void read(const service_ptr_t<file> & p_file,file_info & p_info,abort_callback & p_abort) = 0;
    virtual void write(const service_ptr_t<file> & p_file,const file_info & p_info,unsigned p_flags,abort_callback & p_abort) = 0;
    virtual void remove(const service_ptr_t<file> & p_file,abort_callback & p_abort) = 0;
    virtual bool is_id3v1_sufficient(const file_info & p_info) = 0;
    virtual void truncate_to_id3v1(file_info & p_info) = 0;
    virtual void read_ex(const service_ptr_t<file> & p_file,file_info & p_info,t_filesize & p_tagoffset,abort_callback & p_abort) = 0;

    void write_id3v1(const service_ptr_t<file> & p_file,const file_info & p_info,abort_callback & p_abort);
    void write_apev2(const service_ptr_t<file> & p_file,const file_info & p_info,abort_callback & p_abort);
    void write_apev2_id3v1(const service_ptr_t<file> & p_file,const file_info & p_info,abort_callback & p_abort);


    FB2K_MAKE_SERVICE_INTERFACE_ENTRYPOINT(tag_processor_trailing);
};

namespace tag_processor {
    void write_id3v1(const service_ptr_t<file> & p_file,const file_info & p_info,abort_callback & p_abort);
    void write_apev2(const service_ptr_t<file> & p_file,const file_info & p_info,abort_callback & p_abort);
    void write_apev2_id3v1(const service_ptr_t<file> & p_file,const file_info & p_info,abort_callback & p_abort);
    void write_id3v2(const service_ptr_t<file> & p_file,const file_info & p_info,abort_callback & p_abort);
    void write_id3v2_id3v1(const service_ptr_t<file> & p_file,const file_info & p_info,abort_callback & p_abort);
    void write_multi(const service_ptr_t<file> & p_file,const file_info & p_info,abort_callback & p_abort,bool p_write_id3v1,bool p_write_id3v2,bool p_write_apev2);
    void write_multi_ex(tag_write_callback & p_callback,const service_ptr_t<file> & p_file,const file_info & p_info,abort_callback & p_abort,bool p_write_id3v1,bool p_write_id3v2,bool p_write_apev2);
    void remove_trailing(const service_ptr_t<file> & p_file,abort_callback & p_abort);
    bool remove_id3v2(const service_ptr_t<file> & p_file,abort_callback & p_abort);
    void remove_id3v2_trailing(const service_ptr_t<file> & p_file,abort_callback & p_abort);
    void read_trailing(const service_ptr_t<file> & p_file,file_info & p_info,abort_callback & p_abort);
    void read_trailing_ex(const service_ptr_t<file> & p_file,file_info & p_info,t_filesize & p_tagoffset,abort_callback & p_abort);
    void read_id3v2(const service_ptr_t<file> & p_file,file_info & p_info,abort_callback & p_abort);
    void read_id3v2_trailing(const service_ptr_t<file> & p_file,file_info & p_info,abort_callback & p_abort);

    void skip_id3v2(const service_ptr_t<file> & p_file,t_filesize & p_size_skipped,abort_callback & p_abort);

    bool is_id3v1_sufficient(const file_info & p_info);
    void truncate_to_id3v1(file_info & p_info);

};