/* 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, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
   MA 02111-1307, USA.

   As a special exception, the authors of SANE give permission for
   additional uses of the libraries contained in this release of SANE.

   The exception is that, if you link a SANE library with other files
   to produce an executable, this does not by itself cause the
   resulting executable to be covered by the GNU General Public
   License.  Your use of that executable is in no way restricted on
   account of linking the SANE library code into it.

   This exception does not, however, invalidate any other reasons why
   the executable file might be covered by the GNU General Public
   License.

   If you submit changes to SANE to the maintainers to be included in
   a subsequent release, you agree by submitting the changes that
   those changes may be distributed with this exception intact.

   If you write modifications of your own for SANE, it is your choice
   whether to permit this exception to apply to your modifications.
   If you do not wish that, delete this exception notice.
*/

#ifndef BACKEND_GENESYS_SCANNER_INTERFACE_H
#define BACKEND_GENESYS_SCANNER_INTERFACE_H

#include "fwd.h"
#include <cstddef>
#include <cstdint>
#include <string>
#include <vector>

namespace genesys {

// Represents an interface through which all low level operations are performed.
class ScannerInterface
{
public:

    virtual ~ScannerInterface();

    virtual bool is_mock() const = 0;

    virtual std::uint8_t read_register(std::uint16_t address) = 0;
    virtual void write_register(std::uint16_t address, std::uint8_t value) = 0;
    virtual void write_registers(const Genesys_Register_Set& regs) = 0;

    virtual void write_0x8c(std::uint8_t index, std::uint8_t value) = 0;
    virtual void bulk_read_data(std::uint8_t addr, std::uint8_t* data, std::size_t size) = 0;
    virtual void bulk_write_data(std::uint8_t addr, std::uint8_t* data, std::size_t size) = 0;

    // GL646, GL841, GL843 have different ways to write to RAM and to gamma tables
    virtual void write_buffer(std::uint8_t type, std::uint32_t addr, std::uint8_t* data,
                              std::size_t size) = 0;

    virtual void write_gamma(std::uint8_t type, std::uint32_t addr, std::uint8_t* data,
                             std::size_t size) = 0;

    // GL845, GL846, GL847 and GL124 have a uniform way to write to RAM tables
    virtual void write_ahb(std::uint32_t addr, std::uint32_t size, std::uint8_t* data) = 0;

    virtual std::uint16_t read_fe_register(std::uint8_t address) = 0;
    virtual void write_fe_register(std::uint8_t address, std::uint16_t value) = 0;

    virtual IUsbDevice& get_usb_device() = 0;

    // sleeps the specified number of microseconds. Will not sleep if testing mode is enabled.
    virtual void sleep_us(unsigned microseconds) = 0;

    void sleep_ms(unsigned milliseconds)
    {
        sleep_us(milliseconds * 1000);
    }

    virtual void record_progress_message(const char* msg) = 0;

    virtual void record_slope_table(unsigned table_nr, const std::vector<std::uint16_t>& steps) = 0;

    virtual void record_key_value(const std::string& key, const std::string& value) = 0;

    virtual void test_checkpoint(const std::string& name) = 0;
};

} // namespace genesys

#endif
