| /* |
| * Copyright 2020 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 <cstdint> |
| #include <optional> |
| #include <variant> |
| |
| namespace android { |
| |
| // NUL-terminated plug and play ID. |
| using PnpId = std::array<char, 4>; |
| |
| // Product-specific information about the display or the directly connected device on the |
| // display chain. For example, if the display is transitively connected, this field may contain |
| // product information about the intermediate device. |
| struct DeviceProductInfo { |
| static constexpr size_t TEXT_BUFFER_SIZE = 20; |
| static constexpr size_t RELATIVE_ADDRESS_SIZE = 4; |
| |
| using RelativeAddress = std::array<uint8_t, RELATIVE_ADDRESS_SIZE>; |
| static constexpr RelativeAddress NO_RELATIVE_ADDRESS = {0xff, 0xff, 0xff, 0xff}; |
| |
| struct ModelYear { |
| uint32_t year; |
| }; |
| |
| struct ManufactureYear : ModelYear {}; |
| |
| struct ManufactureWeekAndYear : ManufactureYear { |
| // 1-base week number. Week numbering may not be consistent between manufacturers. |
| uint8_t week; |
| }; |
| |
| // Display name. |
| std::array<char, TEXT_BUFFER_SIZE> name; |
| |
| // Manufacturer Plug and Play ID. |
| PnpId manufacturerPnpId; |
| |
| // Manufacturer product ID. |
| std::array<char, TEXT_BUFFER_SIZE> productId; |
| |
| using ManufactureOrModelDate = std::variant<ModelYear, ManufactureYear, ManufactureWeekAndYear>; |
| ManufactureOrModelDate manufactureOrModelDate; |
| |
| // Relative address in the display network. Unavailable address is indicated |
| // by all elements equal to 255. |
| // For example, for HDMI connected device this will be the physical address. |
| RelativeAddress relativeAddress; |
| }; |
| |
| } // namespace android |