/* sane - Scanner Access Now Easy.

   Copyright (C) 2019 Povilas Kanapickas <povilas@radix.lt>

   This file is part of the SANE package.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

#ifndef BACKEND_GENESYS_COMMAND_SET_H
#define BACKEND_GENESYS_COMMAND_SET_H

#include "device.h"
#include "fwd.h"
#include <cstdint>

namespace genesys {


/** Scanner command set description.

    This description contains parts which are common to all scanners with the
    same command set, but may have different optical resolution and other
    parameters.
 */
class CommandSet
{
public:
    virtual ~CommandSet() = default;

    virtual bool needs_home_before_init_regs_for_scan(Genesys_Device* dev) const = 0;

    virtual void init(Genesys_Device* dev) const = 0;

    virtual void init_regs_for_warmup(Genesys_Device* dev, const Genesys_Sensor& sensor,
                                      Genesys_Register_Set* regs) const = 0;

    virtual void init_regs_for_shading(Genesys_Device* dev, const Genesys_Sensor& sensor,
                                       Genesys_Register_Set& regs) const = 0;

    /** Set up registers for a scan. Similar to init_regs_for_scan except that the session is
        already computed from the session
    */
    virtual void init_regs_for_scan_session(Genesys_Device* dev, const Genesys_Sensor& sensor,
                                            Genesys_Register_Set* reg,
                                            const ScanSession& session) const= 0;

    virtual void set_fe(Genesys_Device* dev, const Genesys_Sensor& sensor, std::uint8_t set) const = 0;
    virtual void set_powersaving(Genesys_Device* dev, int delay) const = 0;
    virtual void save_power(Genesys_Device* dev, bool enable) const = 0;

    virtual void begin_scan(Genesys_Device* dev, const Genesys_Sensor& sensor,
                            Genesys_Register_Set* regs, bool start_motor) const = 0;
    virtual void end_scan(Genesys_Device* dev, Genesys_Register_Set* regs,
                          bool check_stop) const = 0;


    /**
     * Send gamma tables to ASIC
     */
    virtual void send_gamma_table(Genesys_Device* dev, const Genesys_Sensor& sensor) const = 0;

    virtual void offset_calibration(Genesys_Device* dev, const Genesys_Sensor& sensor,
                                    Genesys_Register_Set& regs) const = 0;
    virtual void coarse_gain_calibration(Genesys_Device* dev, const Genesys_Sensor& sensor,
                                         Genesys_Register_Set& regs, int dpi) const = 0;
    virtual SensorExposure led_calibration(Genesys_Device* dev, const Genesys_Sensor& sensor,
                                           Genesys_Register_Set& regs) const = 0;

    virtual void wait_for_motor_stop(Genesys_Device* dev) const = 0;
    virtual void move_back_home(Genesys_Device* dev, bool wait_until_home) const = 0;

    // Updates hardware sensor information in Genesys_Scanner.val[].
    virtual void update_hardware_sensors(struct Genesys_Scanner* s) const = 0;

    /** Needed on some chipsets before reading the status of the home sensor as the sensor may be
        controlled by additional GPIO registers.
    */
    virtual void update_home_sensor_gpio(Genesys_Device& dev) const = 0;

    // functions for sheetfed scanners

    // load document into scanner
    virtual void load_document(Genesys_Device* dev) const = 0;

    /** Detects is the scanned document has left scanner. In this case it updates the amount of
        data to read and set up flags in the dev struct
     */
    virtual void detect_document_end(Genesys_Device* dev) const = 0;

    /// eject document from scanner
    virtual void eject_document(Genesys_Device* dev) const = 0;

    /// write shading data calibration to ASIC
    virtual void send_shading_data(Genesys_Device* dev, const Genesys_Sensor& sensor,
                                   std::uint8_t* data, int size) const = 0;

    virtual bool has_send_shading_data() const
    {
        return true;
    }

    /// calculate an instance of ScanSession for scanning with the given settings
    virtual ScanSession calculate_scan_session(const Genesys_Device* dev,
                                               const Genesys_Sensor& sensor,
                                               const Genesys_Settings& settings) const = 0;

    /// cold boot init function
    virtual void asic_boot(Genesys_Device* dev, bool cold) const = 0;

    /// checks if specific scan head is at home position
    virtual bool is_head_home(Genesys_Device& dev, ScanHeadId scan_head) const = 0;

    /// enables or disables XPA slider motor
    virtual void set_xpa_lamp_power(Genesys_Device& dev, bool set) const = 0;

    /// enables or disables XPA slider motor
    virtual void set_motor_mode(Genesys_Device& dev, Genesys_Register_Set& regs,
                                MotorMode mode) const = 0;
};

} // namespace genesys

#endif // BACKEND_GENESYS_COMMAND_SET_H