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authorJörg Frings-Fürst <debian@jff-webhosting.net>2020-02-02 17:13:01 +0100
committerJörg Frings-Fürst <debian@jff-webhosting.net>2020-02-02 17:13:01 +0100
commitffa8801644a7d53cc1c785e3450f794c07a14eb0 (patch)
tree8d72a18a9a08b9151d12badcb1c78ce06a059f62 /backend/genesys/register.h
parent1687222e1b9e74c89cafbb5910e72d8ec7bfd40f (diff)
New upstream version 1.0.29upstream/1.0.29
Diffstat (limited to 'backend/genesys/register.h')
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1 files changed, 537 insertions, 0 deletions
diff --git a/backend/genesys/register.h b/backend/genesys/register.h
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+/* 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_REGISTER_H
+#define BACKEND_GENESYS_REGISTER_H
+
+#include "utilities.h"
+
+#include <algorithm>
+#include <climits>
+#include <cstdint>
+#include <iostream>
+#include <iomanip>
+#include <stdexcept>
+#include <vector>
+
+namespace genesys {
+
+template<class Value>
+struct Register
+{
+ std::uint16_t address = 0;
+ Value value = 0;
+};
+
+using GenesysRegister = Register<std::uint8_t>;
+
+template<class Value>
+inline bool operator<(const Register<Value>& lhs, const Register<Value>& rhs)
+{
+ return lhs.address < rhs.address;
+}
+
+struct GenesysRegisterSetState
+{
+ bool is_lamp_on = false;
+ bool is_xpa_on = false;
+ bool is_motor_on = false;
+ bool is_xpa_motor_on = false;
+};
+
+template<class Value>
+class RegisterContainer
+{
+public:
+
+ enum Options {
+ SEQUENTIAL = 1
+ };
+
+ using RegisterType = Register<Value>;
+ using ContainerType = std::vector<RegisterType>;
+ using iterator = typename ContainerType::iterator;
+ using const_iterator = typename ContainerType::const_iterator;
+
+ RegisterContainer() = default;
+
+ RegisterContainer(Options opts) : RegisterContainer()
+ {
+ if ((opts & SEQUENTIAL) == SEQUENTIAL) {
+ sorted_ = false;
+ }
+ }
+
+ void init_reg(std::uint16_t address, Value default_value)
+ {
+ if (find_reg_index(address) >= 0) {
+ set(address, default_value);
+ return;
+ }
+ RegisterType reg;
+ reg.address = address;
+ reg.value = default_value;
+ registers_.push_back(reg);
+ if (sorted_)
+ std::sort(registers_.begin(), registers_.end());
+ }
+
+ bool has_reg(std::uint16_t address) const
+ {
+ return find_reg_index(address) >= 0;
+ }
+
+ void remove_reg(std::uint16_t address)
+ {
+ int i = find_reg_index(address);
+ if (i < 0) {
+ throw std::runtime_error("the register does not exist");
+ }
+ registers_.erase(registers_.begin() + i);
+ }
+
+ RegisterType& find_reg(std::uint16_t address)
+ {
+ int i = find_reg_index(address);
+ if (i < 0) {
+ throw std::runtime_error("the register does not exist");
+ }
+ return registers_[i];
+ }
+
+ const RegisterType& find_reg(std::uint16_t address) const
+ {
+ int i = find_reg_index(address);
+ if (i < 0) {
+ throw std::runtime_error("the register does not exist");
+ }
+ return registers_[i];
+ }
+
+ void set(std::uint16_t address, Value value)
+ {
+ find_reg(address).value = value;
+ }
+
+ Value get(std::uint16_t address) const
+ {
+ return find_reg(address).value;
+ }
+
+ void reserve(std::size_t size) { registers_.reserve(size); }
+ void clear() { registers_.clear(); }
+ std::size_t size() const { return registers_.size(); }
+
+ iterator begin() { return registers_.begin(); }
+ const_iterator begin() const { return registers_.begin(); }
+
+ iterator end() { return registers_.end(); }
+ const_iterator end() const { return registers_.end(); }
+
+private:
+ int find_reg_index(std::uint16_t address) const
+ {
+ if (!sorted_) {
+ for (std::size_t i = 0; i < registers_.size(); i++) {
+ if (registers_[i].address == address) {
+ return i;
+ }
+ }
+ return -1;
+ }
+
+ RegisterType search;
+ search.address = address;
+ auto it = std::lower_bound(registers_.begin(), registers_.end(), search);
+ if (it == registers_.end())
+ return -1;
+ if (it->address != address)
+ return -1;
+ return std::distance(registers_.begin(), it);
+ }
+
+ // registers are stored in a sorted vector
+ bool sorted_ = true;
+ std::vector<RegisterType> registers_;
+};
+
+template<class Value>
+std::ostream& operator<<(std::ostream& out, const RegisterContainer<Value>& container)
+{
+ StreamStateSaver state_saver{out};
+
+ out << "RegisterContainer{\n";
+ out << std::hex;
+ out.fill('0');
+
+ for (const auto& reg : container) {
+ unsigned address_width = sizeof(reg.address) * 2;
+ unsigned value_width = sizeof(reg.value) * 2;
+
+ out << " 0x" << std::setw(address_width) << static_cast<unsigned>(reg.address)
+ << " = 0x" << std::setw(value_width) << static_cast<unsigned>(reg.value) << '\n';
+ }
+ out << "}";
+ return out;
+}
+
+class Genesys_Register_Set
+{
+public:
+ static constexpr unsigned MAX_REGS = 256;
+
+ using ContainerType = RegisterContainer<std::uint8_t>;
+ using iterator = typename ContainerType::iterator;
+ using const_iterator = typename ContainerType::const_iterator;
+
+ // FIXME: this shouldn't live here, but in a separate struct that contains Genesys_Register_Set
+ GenesysRegisterSetState state;
+
+ enum Options {
+ SEQUENTIAL = 1
+ };
+
+ Genesys_Register_Set()
+ {
+ registers_.reserve(MAX_REGS);
+ }
+
+ // by default the register set is sorted by address. In certain cases it's importand to send
+ // the registers in certain order: use the SEQUENTIAL option for that
+ Genesys_Register_Set(Options opts) : registers_{static_cast<ContainerType::Options>(opts)}
+ {
+ registers_.reserve(MAX_REGS);
+ }
+
+ const ContainerType& registers() const
+ {
+ return registers_;
+ }
+
+ void init_reg(std::uint16_t address, std::uint8_t default_value)
+ {
+ registers_.init_reg(address, default_value);
+ }
+
+ bool has_reg(std::uint16_t address) const { return registers_.has_reg(address); }
+
+ void remove_reg(std::uint16_t address) { registers_.remove_reg(address); }
+
+ GenesysRegister& find_reg(std::uint16_t address)
+ {
+ return registers_.find_reg(address);
+ }
+
+ const GenesysRegister& find_reg(std::uint16_t address) const
+ {
+ return registers_.find_reg(address);
+ }
+
+ GenesysRegister* find_reg_address(std::uint16_t address)
+ {
+ return &find_reg(address);
+ }
+
+ const GenesysRegister* find_reg_address(std::uint16_t address) const
+ {
+ return &find_reg(address);
+ }
+
+ void set8(std::uint16_t address, std::uint8_t value)
+ {
+ find_reg(address).value = value;
+ }
+
+ void set8_mask(std::uint16_t address, std::uint8_t value, std::uint8_t mask)
+ {
+ auto& reg = find_reg(address);
+ reg.value = (reg.value & ~mask) | value;
+ }
+
+ void set16(std::uint16_t address, std::uint16_t value)
+ {
+ find_reg(address).value = (value >> 8) & 0xff;
+ find_reg(address + 1).value = value & 0xff;
+ }
+
+ void set24(std::uint16_t address, std::uint32_t value)
+ {
+ find_reg(address).value = (value >> 16) & 0xff;
+ find_reg(address + 1).value = (value >> 8) & 0xff;
+ find_reg(address + 2).value = value & 0xff;
+ }
+
+ std::uint8_t get8(std::uint16_t address) const
+ {
+ return find_reg(address).value;
+ }
+
+ std::uint16_t get16(std::uint16_t address) const
+ {
+ return (find_reg(address).value << 8) | find_reg(address + 1).value;
+ }
+
+ std::uint32_t get24(std::uint16_t address) const
+ {
+ return (find_reg(address).value << 16) |
+ (find_reg(address + 1).value << 8) |
+ find_reg(address + 2).value;
+ }
+
+ void clear() { registers_.clear(); }
+ std::size_t size() const { return registers_.size(); }
+
+ iterator begin() { return registers_.begin(); }
+ const_iterator begin() const { return registers_.begin(); }
+
+ iterator end() { return registers_.end(); }
+ const_iterator end() const { return registers_.end(); }
+
+private:
+
+ // registers are stored in a sorted vector
+ ContainerType registers_;
+};
+
+inline std::ostream& operator<<(std::ostream& out, const Genesys_Register_Set& regs)
+{
+ out << regs.registers();
+ return out;
+}
+
+template<class Value>
+struct RegisterSetting
+{
+ using ValueType = Value;
+ using AddressType = std::uint16_t;
+
+ RegisterSetting() = default;
+
+ RegisterSetting(AddressType p_address, ValueType p_value) :
+ address(p_address), value(p_value)
+ {}
+
+ RegisterSetting(AddressType p_address, ValueType p_value, ValueType p_mask) :
+ address(p_address), value(p_value), mask(p_mask)
+ {}
+
+ AddressType address = 0;
+ ValueType value = 0;
+ ValueType mask = 0xff;
+
+ bool operator==(const RegisterSetting& other) const
+ {
+ return address == other.address && value == other.value && mask == other.mask;
+ }
+};
+
+using GenesysRegisterSetting = RegisterSetting<std::uint8_t>;
+using GenesysRegisterSetting16 = RegisterSetting<std::uint16_t>;
+
+template<class Stream, class Value>
+void serialize(Stream& str, RegisterSetting<Value>& reg)
+{
+ serialize(str, reg.address);
+ serialize(str, reg.value);
+ serialize(str, reg.mask);
+}
+
+template<class Value>
+class RegisterSettingSet
+{
+public:
+ using ValueType = Value;
+ using SettingType = RegisterSetting<ValueType>;
+ using AddressType = typename SettingType::AddressType;
+
+ using container = std::vector<SettingType>;
+ using iterator = typename container::iterator;
+ using const_iterator = typename container::const_iterator;
+
+ RegisterSettingSet() = default;
+ RegisterSettingSet(std::initializer_list<SettingType> ilist) :
+ registers_(ilist)
+ {}
+
+ iterator begin() { return registers_.begin(); }
+ const_iterator begin() const { return registers_.begin(); }
+ iterator end() { return registers_.end(); }
+ const_iterator end() const { return registers_.end(); }
+
+ SettingType& operator[](std::size_t i) { return registers_[i]; }
+ const SettingType& operator[](std::size_t i) const { return registers_[i]; }
+
+ std::size_t size() const { return registers_.size(); }
+ bool empty() const { return registers_.empty(); }
+ void clear() { registers_.clear(); }
+
+ void push_back(SettingType reg) { registers_.push_back(reg); }
+
+ void merge(const RegisterSettingSet& other)
+ {
+ for (const auto& reg : other) {
+ set_value(reg.address, reg.value);
+ }
+ }
+
+ SettingType& find_reg(AddressType address)
+ {
+ int i = find_reg_index(address);
+ if (i < 0) {
+ throw std::runtime_error("the register does not exist");
+ }
+ return registers_[i];
+ }
+
+ const SettingType& find_reg(AddressType address) const
+ {
+ int i = find_reg_index(address);
+ if (i < 0) {
+ throw std::runtime_error("the register does not exist");
+ }
+ return registers_[i];
+ }
+
+ ValueType get_value(AddressType address) const
+ {
+ int index = find_reg_index(address);
+ if (index >= 0) {
+ return registers_[index].value;
+ }
+ throw std::out_of_range("Unknown register");
+ }
+
+ void set_value(AddressType address, ValueType value)
+ {
+ int index = find_reg_index(address);
+ if (index >= 0) {
+ registers_[index].value = value;
+ return;
+ }
+ push_back(SettingType(address, value));
+ }
+
+ template<class V>
+ friend void serialize(std::istream& str, RegisterSettingSet<V>& reg);
+ template<class V>
+ friend void serialize(std::ostream& str, RegisterSettingSet<V>& reg);
+
+ bool operator==(const RegisterSettingSet& other) const
+ {
+ return registers_ == other.registers_;
+ }
+
+private:
+
+ int find_reg_index(AddressType address) const
+ {
+ for (std::size_t i = 0; i < registers_.size(); i++) {
+ if (registers_[i].address == address) {
+ return i;
+ }
+ }
+ return -1;
+ }
+
+ std::vector<SettingType> registers_;
+};
+
+using GenesysRegisterSettingSet = RegisterSettingSet<std::uint8_t>;
+using GenesysRegisterSettingSet16 = RegisterSettingSet<std::uint16_t>;
+
+template<class Value>
+std::ostream& operator<<(std::ostream& out, const RegisterSettingSet<Value>& container)
+{
+ StreamStateSaver state_saver{out};
+
+ out << "RegisterSettingSet{\n";
+ out << std::hex;
+ out.fill('0');
+
+ for (const auto& reg : container) {
+ unsigned address_width = sizeof(reg.address) * 2;
+ unsigned value_width = sizeof(reg.value) * 2;
+ unsigned mask_width = sizeof(reg.mask) * 2;
+
+ out << " 0x" << std::setw(address_width) << static_cast<unsigned>(reg.address)
+ << " = 0x" << std::setw(value_width) << static_cast<unsigned>(reg.value)
+ << " & 0x" << std::setw(mask_width) << static_cast<unsigned>(reg.mask) << '\n';
+ }
+ out << "}";
+ return out;
+}
+
+template<class Value>
+inline void serialize(std::istream& str, RegisterSettingSet<Value>& reg)
+{
+ using AddressType = typename RegisterSetting<Value>::AddressType;
+
+ reg.clear();
+ const std::size_t max_register_address = 1 << (sizeof(AddressType) * CHAR_BIT);
+ serialize(str, reg.registers_, max_register_address);
+}
+
+template<class Value>
+inline void serialize(std::ostream& str, RegisterSettingSet<Value>& reg)
+{
+ serialize(str, reg.registers_);
+}
+
+template<class F, class Value>
+void apply_registers_ordered(const RegisterSettingSet<Value>& set,
+ std::initializer_list<std::uint16_t> order, F f)
+{
+ for (std::uint16_t addr : order) {
+ f(set.find_reg(addr));
+ }
+ for (const auto& reg : set) {
+ if (std::find(order.begin(), order.end(), reg.address) != order.end()) {
+ continue;
+ }
+ f(reg);
+ }
+}
+
+} // namespace genesys
+
+#endif // BACKEND_GENESYS_REGISTER_H