Push layered Qt host source files
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189
DRI/Dri_Hid.cpp
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189
DRI/Dri_Hid.cpp
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#include "DRI/Dri_Hid.h"
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#include <hidsdi.h>
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#pragma comment(lib, "hid.lib")
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namespace
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{
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bool Dri_Hid_BeginRead(Dri_Hid_Struct_ReadPort* p_Port, QString* p_TextStatus)
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{
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if (!p_Port->IsOpened || (p_Port->InputLength == 0)) return false;
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if (p_Port->IsReadPending) return true;
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ResetEvent(p_Port->HandleEvent);
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p_Port->ReadBuffer.fill(0, p_Port->InputLength);
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p_Port->OverlappedRead = {};
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p_Port->OverlappedRead.hEvent = p_Port->HandleEvent;
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DWORD BytesRead = 0;
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if (ReadFile(
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p_Port->HandleRead,
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p_Port->ReadBuffer.data(),
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p_Port->InputLength,
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&BytesRead,
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&p_Port->OverlappedRead) ||
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(GetLastError() == ERROR_IO_PENDING))
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{
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p_Port->IsReadPending = true;
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return true;
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}
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if (p_TextStatus != nullptr) *p_TextStatus = QStringLiteral("%1 failed to start async read: %2").arg(p_Port->PortName).arg(GetLastError());
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return false;
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}
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} // namespace
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void Dri_Hid_CloseReadPort(Dri_Hid_Struct_ReadPort* p_Port)
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{
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if ((p_Port->HandleRead != INVALID_HANDLE_VALUE) && p_Port->IsReadPending) CancelIoEx(p_Port->HandleRead, &p_Port->OverlappedRead);
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if (p_Port->HandleRead != INVALID_HANDLE_VALUE) CloseHandle(p_Port->HandleRead);
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if (p_Port->HandleEvent != nullptr) CloseHandle(p_Port->HandleEvent);
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*p_Port = Dri_Hid_Struct_ReadPort();
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}
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bool Dri_Hid_InitReadPort(
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Dri_Hid_Struct_ReadPort* p_Port,
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const QString& DevicePath,
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quint16 InputLength,
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Mid_Enum_RawPacketSource PacketSource,
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const QString& PortName,
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QString* p_TextStatus)
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{
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Dri_Hid_CloseReadPort(p_Port);
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p_Port->HandleRead = CreateFileW(
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reinterpret_cast<LPCWSTR>(DevicePath.utf16()),
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GENERIC_READ,
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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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FILE_FLAG_OVERLAPPED,
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nullptr);
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if (p_Port->HandleRead == INVALID_HANDLE_VALUE)
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{
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if (p_TextStatus != nullptr) *p_TextStatus = QStringLiteral("%1 failed to open read handle: %2").arg(PortName).arg(GetLastError());
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return false;
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}
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p_Port->HandleEvent = CreateEventW(nullptr, TRUE, FALSE, nullptr);
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if (p_Port->HandleEvent == nullptr)
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{
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if (p_TextStatus != nullptr) *p_TextStatus = QStringLiteral("%1 failed to create event: %2").arg(PortName).arg(GetLastError());
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Dri_Hid_CloseReadPort(p_Port);
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return false;
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}
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p_Port->InputLength = InputLength;
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p_Port->PacketSource = PacketSource;
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p_Port->PortName = PortName;
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p_Port->ReadBuffer = QByteArray(InputLength, 0);
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p_Port->OverlappedRead.hEvent = p_Port->HandleEvent;
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p_Port->IsOpened = true;
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if (!Dri_Hid_BeginRead(p_Port, p_TextStatus)) { Dri_Hid_CloseReadPort(p_Port); return false; }
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return true;
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}
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bool Dri_Hid_Read(
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Dri_Hid_Struct_ReadPort* p_Port,
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Mid_Struct_RawPacket* p_Packet,
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QString* p_TextStatus)
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{
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*p_Packet = Mid_Struct_RawPacket();
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p_Packet->Source = p_Port->PacketSource;
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p_Packet->PortName = p_Port->PortName;
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if (!p_Port->IsOpened) return false;
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if (!p_Port->IsReadPending)
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{
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Dri_Hid_BeginRead(p_Port, p_TextStatus);
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return false;
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}
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DWORD BytesRead = 0;
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if (!GetOverlappedResult(p_Port->HandleRead, &p_Port->OverlappedRead, &BytesRead, FALSE))
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{
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const DWORD ErrorCode = GetLastError();
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if (ErrorCode == ERROR_IO_INCOMPLETE) return false;
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if (p_TextStatus != nullptr) *p_TextStatus = QStringLiteral("%1 read packet failed: %2").arg(p_Port->PortName).arg(ErrorCode);
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Dri_Hid_CloseReadPort(p_Port);
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return false;
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}
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p_Port->IsReadPending = false;
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if (BytesRead > 0) { p_Packet->IsValid = true; p_Packet->ByteArray = p_Port->ReadBuffer.left(static_cast<int>(BytesRead)); }
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Dri_Hid_BeginRead(p_Port, p_TextStatus);
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return p_Packet->IsValid;
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}
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HANDLE Dri_Hid_OpenWriteHandle(const QString& DevicePath, QString* p_TextError)
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{
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HANDLE HandleWrite = CreateFileW(
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reinterpret_cast<LPCWSTR>(DevicePath.utf16()),
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GENERIC_WRITE,
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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 (HandleWrite != INVALID_HANDLE_VALUE) return HandleWrite;
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const DWORD WriteError = GetLastError();
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HandleWrite = CreateFileW(
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reinterpret_cast<LPCWSTR>(DevicePath.utf16()),
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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 ((HandleWrite == INVALID_HANDLE_VALUE) && (p_TextError != nullptr)) *p_TextError = QStringLiteral("GENERIC_WRITE=%1, ZeroAccess=%2").arg(WriteError).arg(GetLastError());
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return HandleWrite;
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}
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bool Dri_Hid_WritePacket(
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HANDLE HandleWrite,
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quint16 OutputLength,
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const QByteArray& Packet,
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QString* p_TextError)
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{
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if ((HandleWrite == INVALID_HANDLE_VALUE) || Packet.isEmpty()) return false;
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QByteArray Buffer = Packet;
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if (HidD_SetOutputReport(HandleWrite, Buffer.data(), static_cast<ULONG>(Buffer.size()))) return true;
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const DWORD SetReportError = GetLastError();
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DWORD BytesWritten = 0;
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if (WriteFile(HandleWrite, Buffer.constData(), static_cast<DWORD>(Buffer.size()), &BytesWritten, nullptr) && (BytesWritten == static_cast<DWORD>(Buffer.size()))) return true;
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const DWORD WriteFileError = GetLastError();
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if ((OutputLength > 0) && (Buffer.size() < OutputLength))
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{
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Buffer.append(OutputLength - Buffer.size(), 0);
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if (HidD_SetOutputReport(HandleWrite, Buffer.data(), static_cast<ULONG>(Buffer.size()))) return true;
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const DWORD PaddedSetReportError = GetLastError();
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BytesWritten = 0;
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if (WriteFile(HandleWrite, Buffer.constData(), static_cast<DWORD>(Buffer.size()), &BytesWritten, nullptr) && (BytesWritten == static_cast<DWORD>(Buffer.size()))) return true;
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const DWORD PaddedWriteFileError = GetLastError();
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if (p_TextError != nullptr)
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{
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*p_TextError = QStringLiteral(
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"SetOutputReport=%1, WriteFile=%2, PaddedSetOutputReport=%3, PaddedWriteFile=%4")
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.arg(SetReportError)
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.arg(WriteFileError)
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.arg(PaddedSetReportError)
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.arg(PaddedWriteFileError);
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}
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return false;
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}
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if (p_TextError != nullptr) *p_TextError = QStringLiteral("SetOutputReport=%1, WriteFile=%2").arg(SetReportError).arg(WriteFileError);
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return false;
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}
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