133 lines
5.2 KiB
C#
133 lines
5.2 KiB
C#
using System;
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using Microsoft.Win32.SafeHandles;
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using System.Runtime.InteropServices;
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namespace DTS.Common.WINUSBConnection
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{
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/// <summary>
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/// These declarations are translated from the C declarations in various files
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/// in the Windows DDK. The files are:
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///
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/// winddk\6001\inc\api\usb.h
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/// winddk\6001\inc\api\usb100.h
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/// winddk\6001\inc\api\winusbio.h
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///
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/// (your home directory and release number may vary)
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/// </summary>
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internal sealed partial class WinUsbDevice
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{
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internal const uint DEVICE_SPEED = 1;
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internal const byte USB_ENDPOINT_DIRECTION_MASK = 0X80;
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internal enum PolicyType
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{
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ShortPacketTerminate = 1,
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AutoClearStall,
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PipeTransferTimeout,
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IgnoreShortPackets,
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AllowPartialReads,
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AutoFlush,
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RawIO,
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}
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internal enum USBDPipeTypes
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{
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UsbdPipeTypeControl,
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UsbdPipeTypeIsochronous,
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UsbdPipeTypeBulk,
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UsbdPipeTypeInterrupt,
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}
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internal enum USBDeviceSpeeds
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{
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UsbLowSpeed = 1,
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UsbFullSpeed,
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UsbHighSpeed,
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct USBConfigurationDescriptor
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{
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internal byte bLength;
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internal byte bDescriptorType;
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internal ushort wTotalLength;
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internal byte bNumInterfaces;
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internal byte bConfigurationValue;
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internal byte iConfiguration;
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internal byte bmAttributes;
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internal byte MaxPower;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct USBInterfaceDescriptor
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{
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internal byte bLength;
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internal byte bDescriptorType;
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internal byte bInterfaceNumber;
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internal byte bAlternateSetting;
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internal byte bNumEndpoints;
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internal byte bInterfaceClass;
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internal byte bInterfaceSubClass;
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internal byte bInterfaceProtocol;
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internal byte iInterface;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct WinUSBPipeInformation
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{
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internal USBDPipeTypes PipeTypes;
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internal byte PipeId;
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internal ushort MaximumPacketSize;
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internal byte Interval;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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internal struct WinUSBSetupPacket
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{
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internal byte RequestType;
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internal byte Request;
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internal ushort Value;
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internal ushort Index;
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internal ushort Length;
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}
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[DllImport("winusb.dll", SetLastError = true)]
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internal static extern bool WinUsb_ControlTransfer(IntPtr interfaceHandle, WinUSBSetupPacket setupPacket, byte[] buffer, uint bufferLength, ref uint lengthTransferred, IntPtr overlapped);
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[DllImport("winusb.dll", SetLastError = true)]
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internal static extern bool WinUsb_Free(IntPtr interfaceHandle);
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[DllImport("winusb.dll", SetLastError = true)]
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internal static extern bool WinUsb_Initialize(SafeFileHandle deviceHandle, ref IntPtr interfaceHandle);
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// Use this declaration to retrieve DEVICE_SPEED (the only currently defined InformationType).
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[DllImport("winusb.dll", SetLastError = true)]
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internal static extern bool WinUsb_QueryDeviceInformation(IntPtr interfaceHandle, uint informationType, ref uint bufferLength, ref byte buffer);
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[DllImport("winusb.dll", SetLastError = true)]
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internal static extern bool WinUsb_QueryInterfaceSettings(IntPtr interfaceHandle, byte alternateInterfaceNumber, ref USBInterfaceDescriptor usbAltInterfaceDescriptor);
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[DllImport("winusb.dll", SetLastError = true)]
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internal static extern bool WinUsb_QueryPipe(IntPtr interfaceHandle, byte alternateInterfaceNumber, byte pipeIndex, ref WinUSBPipeInformation pipeInformation);
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[DllImport("winusb.dll", SetLastError = true)]
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internal static extern bool WinUsb_ReadPipe(IntPtr interfaceHandle, byte pipeId, byte[] buffer, uint bufferLength, ref uint lengthTransferred, IntPtr overlapped);
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// Two declarations for WinUsb_SetPipePolicy.
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// Use this one when the returned Value is a Byte (all except PIPE_TRANSFER_TIMEOUT):
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[DllImport("winusb.dll", SetLastError = true)]
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internal static extern bool WinUsb_SetPipePolicy(IntPtr interfaceHandle, byte pipeId, uint policyType, uint valueLength, ref byte Value);
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// Use this alias when the returned Value is a UInt32 (PIPE_TRANSFER_TIMEOUT only):
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[DllImport("winusb.dll", SetLastError = true, EntryPoint = "WinUsb_SetPipePolicy")]
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internal static extern bool WinUsb_SetPipePolicy1(IntPtr interfaceHandle, byte pipeId, uint policyType, uint valueLength, ref uint Value);
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[DllImport("winusb.dll", SetLastError = true)]
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internal static extern bool WinUsb_WritePipe(IntPtr interfaceHandle, Byte pipeId, byte[] buffer, uint bufferLength, ref uint lengthTransferred, IntPtr overlapped);
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}
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}
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