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/******************************************************************************
*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
#pragma once
#include <array>
#include <optional>
#include <string>
#include "packet/custom_field_fixed_size_interface.h"
#include "storage/serializable.h"
namespace bluetooth {
namespace hci {
class ClassOfDevice final : public packet::CustomFieldFixedSizeInterface<ClassOfDevice>,
public storage::Serializable<ClassOfDevice> {
public:
static constexpr size_t kLength = 3;
std::array<uint8_t, kLength> cod = {};
ClassOfDevice() = default;
ClassOfDevice(const uint8_t (&class_of_device)[kLength]);
// packet::CustomFieldFixedSizeInterface methods
inline uint8_t* data() override {
return cod.data();
}
inline const uint8_t* data() const override {
return cod.data();
}
// storage::Serializable methods
std::string ToString() const;
static std::optional<ClassOfDevice> FromString(const std::string& str);
std::string ToLegacyConfigString() const override;
static std::optional<ClassOfDevice> FromLegacyConfigString(const std::string& str);
bool operator<(const ClassOfDevice& rhs) const {
return cod < rhs.cod;
}
bool operator==(const ClassOfDevice& rhs) const {
return cod == rhs.cod;
}
bool operator>(const ClassOfDevice& rhs) const {
return (rhs < *this);
}
bool operator<=(const ClassOfDevice& rhs) const {
return !(*this > rhs);
}
bool operator>=(const ClassOfDevice& rhs) const {
return !(*this < rhs);
}
bool operator!=(const ClassOfDevice& rhs) const {
return !(*this == rhs);
}
// Converts |string| to ClassOfDevice and places it in |to|. If |from| does
// not represent a Class of Device, |to| is not modified and this function
// returns false. Otherwise, it returns true.
static bool FromString(const std::string& from, ClassOfDevice& to);
// Converts uint32_t encoded class of device to ClassOfDevice object
// uint32_t encoding:
// <high> uint8_t(cod[0]) | uint8_t(cod[1]) | uint8_t(cod[2]) <low>
// Only used in legacy stack device config
static std::optional<ClassOfDevice> FromUint32Legacy(uint32_t cod_int);
uint32_t ToUint32Legacy() const;
// Copies |from| raw Class of Device octets to the local object.
// Returns the number of copied octets (always ClassOfDevice::kLength)
size_t FromOctets(const uint8_t* from);
static bool IsValid(const std::string& class_of_device);
};
inline std::ostream& operator<<(std::ostream& os, const ClassOfDevice& c) {
os << c.ToString();
return os;
}
} // namespace hci
} // namespace bluetooth
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