1 /* 2 * Copyright 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <array> 20 #include <cstdint> 21 #include <optional> 22 #include <string> 23 #include <string_view> 24 #include <vector> 25 26 #include <ui/DeviceProductInfo.h> 27 #include <ui/DisplayId.h> 28 #include <ui/Size.h> 29 30 #define LEGACY_DISPLAY_TYPE_PRIMARY 0 31 #define LEGACY_DISPLAY_TYPE_EXTERNAL 1 32 33 namespace android { 34 35 using DisplayIdentificationData = std::vector<uint8_t>; 36 37 struct DetailedTimingDescriptor { 38 ui::Size pixelSizeCount; 39 ui::Size physicalSizeInMm; 40 }; 41 42 struct DisplayIdentificationInfo { 43 PhysicalDisplayId id; 44 std::string name; 45 std::optional<DeviceProductInfo> deviceProductInfo; 46 std::optional<DetailedTimingDescriptor> preferredDetailedTimingDescriptor; 47 }; 48 49 struct ExtensionBlock { 50 uint8_t tag; 51 uint8_t revisionNumber; 52 }; 53 54 struct HdmiPhysicalAddress { 55 // The address describes the path from the display sink in the network of connected HDMI 56 // devices. The format of the address is "a.b.c.d". For example, address 2.1.0.0 means we are 57 // connected to port 1 of a device which is connected to port 2 of the sink. 58 uint8_t a, b, c, d; 59 }; 60 61 struct HdmiVendorDataBlock { 62 HdmiPhysicalAddress physicalAddress; 63 }; 64 65 struct Cea861ExtensionBlock : ExtensionBlock { 66 std::optional<HdmiVendorDataBlock> hdmiVendorDataBlock; 67 }; 68 69 struct Edid { 70 uint16_t manufacturerId; 71 uint16_t productId; 72 std::optional<uint64_t> hashedBlockZeroSerialNumberOpt; 73 std::optional<uint64_t> hashedDescriptorBlockSerialNumberOpt; 74 PnpId pnpId; 75 uint32_t modelHash; 76 std::string_view displayName; 77 uint8_t manufactureOrModelYear; 78 uint8_t manufactureWeek; 79 ui::Size physicalSizeInCm; 80 std::optional<Cea861ExtensionBlock> cea861Block; 81 std::optional<DetailedTimingDescriptor> preferredDetailedTimingDescriptor; 82 }; 83 84 bool isEdid(const DisplayIdentificationData&); 85 std::optional<Edid> parseEdid(const DisplayIdentificationData&); 86 std::optional<PnpId> getPnpId(uint16_t manufacturerId); 87 std::optional<PnpId> getPnpId(PhysicalDisplayId); 88 89 std::optional<DisplayIdentificationInfo> parseDisplayIdentificationData( 90 uint8_t port, const DisplayIdentificationData&); 91 92 PhysicalDisplayId getVirtualDisplayId(uint32_t id); 93 94 } // namespace android 95