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241
MID/Mid_Def.cpp
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241
MID/Mid_Def.cpp
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#include "MID/Mid_Def.h"
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#include <Windows.h>
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#include <SetupAPI.h>
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#include <hidsdi.h>
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#include <hidpi.h>
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#pragma comment(lib, "hid.lib")
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#pragma comment(lib, "setupapi.lib")
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/*
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* MID 层：介于逻辑与 DRI 之间，负责描述 HID 设备匹配与数据格式。
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* 高密注释用于教学，逐条解释如何把固件接口映射为 Win32 API 调用。
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*/
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/* 构造 NKRO 接口的匹配条件（Usage Page / Usage 固定） */
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Mid_Struct_DeviceMatch Mid_Func_GetNkroMatch(const Mid_Struct_DeviceConfig& DeviceConfig)
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{
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Mid_Struct_DeviceMatch Match;
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Match.VendorId = DeviceConfig.VendorId;
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Match.ProductId = DeviceConfig.ProductId;
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Match.UsagePage = MID_CONST_USAGE_PAGE_NKRO;
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Match.Usage = MID_CONST_USAGE_NKRO;
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Match.Name = QStringLiteral("NKRO Keyboard Interface");
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return Match;
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}
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/* 构造 Consumer 接口的匹配条件 */
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Mid_Struct_DeviceMatch Mid_Func_GetConsumerMatch(const Mid_Struct_DeviceConfig& DeviceConfig)
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{
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Mid_Struct_DeviceMatch Match;
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Match.VendorId = DeviceConfig.VendorId;
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Match.ProductId = DeviceConfig.ProductId;
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Match.UsagePage = MID_CONST_USAGE_PAGE_CONSUMER;
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Match.Usage = MID_CONST_USAGE_CONSUMER;
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Match.Name = QStringLiteral("Consumer Interface");
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return Match;
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}
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/* 构造 Vendor（状态镜像）接口的匹配条件 */
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Mid_Struct_DeviceMatch Mid_Func_GetVendorMatch(const Mid_Struct_DeviceConfig& DeviceConfig)
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{
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Mid_Struct_DeviceMatch Match;
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Match.VendorId = DeviceConfig.VendorId;
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Match.ProductId = DeviceConfig.ProductId;
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Match.UsagePage = MID_CONST_USAGE_PAGE_VENDOR;
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Match.Usage = MID_CONST_USAGE_VENDOR;
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Match.Name = QStringLiteral("Vendor State Mirror Interface");
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return Match;
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}
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/*
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* Mid_Func_FindHidInterface：按照匹配条件扫描系统中的 HID 接口。
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* 步骤：1) 获取 HID GUID 2) SetupAPI 列举接口 3) CreateFile 查询属性 4) 命中后返回路径和报文长度。
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*/
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bool Mid_Func_FindHidInterface(
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const Mid_Struct_DeviceMatch& Match,
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QString* p_DevicePath,
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quint16* p_InputLength,
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quint16* p_OutputLength)
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{
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/* Win32 提供的 HID GUID：列举所有 HID 接口都靠它 */
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GUID HidGuid;
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HidD_GetHidGuid(&HidGuid);
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/* 构建“当前存在 + 暴露接口”的设备集合 */
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HDEVINFO DeviceInfoSet = SetupDiGetClassDevsW(&HidGuid, nullptr, nullptr, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
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if (DeviceInfoSet == INVALID_HANDLE_VALUE)
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{
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return false;
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}
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bool IsFound = false;
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SP_DEVICE_INTERFACE_DATA InterfaceData = {};
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InterfaceData.cbSize = sizeof(InterfaceData);
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for (DWORD Index = 0;
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SetupDiEnumDeviceInterfaces(DeviceInfoSet, nullptr, &HidGuid, Index, &InterfaceData);
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++Index)
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{
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/* Query 设备路径前先得到所需缓冲区长度 */
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DWORD NeedLength = 0;
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SetupDiGetDeviceInterfaceDetailW(DeviceInfoSet, &InterfaceData, nullptr, 0, &NeedLength, nullptr);
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if (NeedLength == 0)
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{
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continue;
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}
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/* 申请一段缓冲区存储 SP_DEVICE_INTERFACE_DETAIL_DATA_W */
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QByteArray Buffer(static_cast<int>(NeedLength), 0);
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auto* p_Detail = reinterpret_cast<SP_DEVICE_INTERFACE_DETAIL_DATA_W*>(Buffer.data());
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p_Detail->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_W);
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if (!SetupDiGetDeviceInterfaceDetailW(DeviceInfoSet, &InterfaceData, p_Detail, NeedLength, nullptr, nullptr))
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{
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continue;
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}
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/* 只需 0 访问权限即可读取属性 */
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HANDLE HandleQuery = CreateFileW(
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p_Detail->DevicePath,
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0,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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nullptr,
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OPEN_EXISTING,
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0,
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nullptr);
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if (HandleQuery == INVALID_HANDLE_VALUE)
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{
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continue;
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}
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HIDD_ATTRIBUTES Attributes = {};
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Attributes.Size = sizeof(Attributes);
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PHIDP_PREPARSED_DATA p_Preparsed = nullptr;
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HIDP_CAPS Caps = {};
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/* 通过 Attributes + Caps 对比 VID / PID / Usage Page / Usage */
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const bool IsMatch =
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HidD_GetAttributes(HandleQuery, &Attributes) &&
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HidD_GetPreparsedData(HandleQuery, &p_Preparsed) &&
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(HidP_GetCaps(p_Preparsed, &Caps) == HIDP_STATUS_SUCCESS) &&
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(Attributes.VendorID == Match.VendorId) &&
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(Attributes.ProductID == Match.ProductId) &&
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(Caps.UsagePage == Match.UsagePage) &&
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(Caps.Usage == Match.Usage);
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if (p_Preparsed != nullptr)
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{
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HidD_FreePreparsedData(p_Preparsed);
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}
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CloseHandle(HandleQuery);
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if (!IsMatch)
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{
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continue;
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}
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/* 命中：写回设备路径及报文长度 */
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if (p_DevicePath != nullptr)
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{
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*p_DevicePath = QString::fromWCharArray(p_Detail->DevicePath);
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}
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if (p_InputLength != nullptr)
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{
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*p_InputLength = Caps.InputReportByteLength;
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}
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if (p_OutputLength != nullptr)
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{
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*p_OutputLength = Caps.OutputReportByteLength;
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}
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IsFound = true;
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break;
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}
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/* 枚举结束释放句柄 */
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SetupDiDestroyDeviceInfoList(DeviceInfoSet);
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return IsFound;
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}
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/* 调试输出：把字节数组格式化成“AA BB CC” */
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QString Mid_Func_GetHexText(const QByteArray& ByteArray)
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{
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QStringList TextList;
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for (int Index = 0; Index < ByteArray.size(); ++Index)
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{
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TextList.append(QStringLiteral("%1")
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.arg(static_cast<quint8>(ByteArray.at(Index)), 2, 16, QLatin1Char('0'))
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.toUpper());
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}
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return TextList.join(QLatin1Char(' '));
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}
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/* 把 Modifier 位图翻译成人类可读的组合 */
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QString Mid_Func_GetModifierText(quint8 Modifier)
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{
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QStringList TextList;
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if (Modifier == 0)
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{
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return QStringLiteral("无");
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}
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if ((Modifier & 0x01) != 0) TextList.append(QStringLiteral("Left Ctrl"));
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if ((Modifier & 0x02) != 0) TextList.append(QStringLiteral("Left Shift"));
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if ((Modifier & 0x04) != 0) TextList.append(QStringLiteral("Left Alt"));
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if ((Modifier & 0x08) != 0) TextList.append(QStringLiteral("Left GUI"));
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if ((Modifier & 0x10) != 0) TextList.append(QStringLiteral("Right Ctrl"));
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if ((Modifier & 0x20) != 0) TextList.append(QStringLiteral("Right Shift"));
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if ((Modifier & 0x40) != 0) TextList.append(QStringLiteral("Right Alt"));
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if ((Modifier & 0x80) != 0) TextList.append(QStringLiteral("Right GUI"));
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return TextList.join(QStringLiteral(", "));
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}
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/* 键盘 Usage -> 中文/英文标签，方便 UI 展示 */
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QString Mid_Func_GetKeyboardUsageText(quint16 Usage)
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{
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switch (Usage)
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{
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case 0x0053: return QStringLiteral("Num Lock");
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case 0x0054: return QStringLiteral("小键盘 /");
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case 0x0055: return QStringLiteral("小键盘 *");
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case 0x0056: return QStringLiteral("小键盘 -");
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case 0x0057: return QStringLiteral("小键盘 +");
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case 0x0058: return QStringLiteral("小键盘 Enter");
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case 0x0059: return QStringLiteral("小键盘 1");
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case 0x005A: return QStringLiteral("小键盘 2");
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case 0x005B: return QStringLiteral("小键盘 3");
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case 0x005C: return QStringLiteral("小键盘 4");
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case 0x005D: return QStringLiteral("小键盘 5");
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case 0x005E: return QStringLiteral("小键盘 6");
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case 0x005F: return QStringLiteral("小键盘 7");
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case 0x0060: return QStringLiteral("小键盘 8");
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case 0x0061: return QStringLiteral("小键盘 9");
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case 0x0062: return QStringLiteral("小键盘 0");
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case 0x0063: return QStringLiteral("小键盘 .");
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case 0x00E0: return QStringLiteral("Left Ctrl");
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case 0x00E1: return QStringLiteral("Left Shift");
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case 0x00E2: return QStringLiteral("Left Alt");
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case 0x00E3: return QStringLiteral("Left GUI");
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case 0x00E4: return QStringLiteral("Right Ctrl");
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case 0x00E5: return QStringLiteral("Right Shift");
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case 0x00E6: return QStringLiteral("Right Alt");
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case 0x00E7: return QStringLiteral("Right GUI");
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default:
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return QStringLiteral("未知 HID Usage");
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}
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}
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/* Consumer Usage -> UI 标签 */
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QString Mid_Func_GetConsumerUsageText(quint16 Usage)
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{
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switch (Usage)
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{
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case 0x0000: return QStringLiteral("释放");
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case 0x00E2: return QStringLiteral("Mute");
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case 0x00E9: return QStringLiteral("Volume Up");
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case 0x00EA: return QStringLiteral("Volume Down");
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default:
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return QStringLiteral("未知 Consumer Usage");
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}
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}
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