replaygain.h

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struct t_replaygain_config
{
    enum /*t_source_mode*/ {
        source_mode_none,
        source_mode_track,
        source_mode_album, 
        // New in 1.3.8
        // SPECIAL MODE valid only for playback settings; if set, track gain will be used for random & shuffle-tracks modes, album for shuffle albums & ordered playback.
        source_mode_byPlaybackOrder 
    };
    enum /*t_processing_mode*/ {processing_mode_none,processing_mode_gain,processing_mode_gain_and_peak,processing_mode_peak};
    typedef t_uint32 t_source_mode; typedef t_uint32 t_processing_mode;

    t_replaygain_config() {reset();}
    t_replaygain_config(t_source_mode p_source_mode,t_processing_mode p_processing_mode,float p_preamp_without_rg, float p_preamp_with_rg)
        : m_source_mode(p_source_mode), m_processing_mode(p_processing_mode), m_preamp_without_rg(p_preamp_without_rg), m_preamp_with_rg(p_preamp_with_rg) {}

    
    t_source_mode m_source_mode;
    t_processing_mode m_processing_mode;
    float m_preamp_without_rg, m_preamp_with_rg;//preamp values in dB

    void reset();
    audio_sample query_scale(const file_info & info) const;
    audio_sample query_scale(const metadb_handle_ptr & info) const;
    audio_sample query_scale(const replaygain_info & info) const;

    void format_name(pfc::string_base & p_out) const;
    bool is_active() const;

    static bool equals(const t_replaygain_config & v1, const t_replaygain_config & v2) {
        return v1.m_source_mode == v2.m_source_mode && v1.m_processing_mode == v2.m_processing_mode && v1.m_preamp_without_rg == v2.m_preamp_without_rg && v1.m_preamp_with_rg == v2.m_preamp_with_rg;
    }
    bool operator==(const t_replaygain_config & other) const {return equals(*this, other);}
    bool operator!=(const t_replaygain_config & other) const {return !equals(*this, other);}
};

FB2K_STREAM_READER_OVERLOAD(t_replaygain_config) {
    return stream >> value.m_source_mode >> value.m_processing_mode >> value.m_preamp_with_rg >> value.m_preamp_without_rg;
}
FB2K_STREAM_WRITER_OVERLOAD(t_replaygain_config) {
    return stream << value.m_source_mode << value.m_processing_mode << value.m_preamp_with_rg << value.m_preamp_without_rg;
}

class NOVTABLE replaygain_manager : public service_base {
public:
    virtual void get_core_settings(t_replaygain_config & p_out) = 0;

    virtual HWND configure_embedded(const t_replaygain_config & p_initdata,HWND p_parent,unsigned p_id,bool p_from_modal) = 0;
    virtual void configure_embedded_retrieve(HWND wnd,t_replaygain_config & p_data) = 0;
    
    virtual bool configure_popup(t_replaygain_config & p_data,HWND p_parent,const char * p_title) = 0;

    virtual void set_core_settings(const t_replaygain_config & p_config) = 0;

    virtual void configure_embedded_set(HWND wnd, t_replaygain_config const & p_data) = 0;
    virtual void get_core_defaults(t_replaygain_config & out) = 0;

    audio_sample core_settings_query_scale(const file_info & p_info);
    audio_sample core_settings_query_scale(const metadb_handle_ptr & info);

    FB2K_MAKE_SERVICE_INTERFACE_ENTRYPOINT(replaygain_manager);
};