mirror of
https://github.com/cemu-project/DS4Windows.git
synced 2024-11-22 17:29:18 +01:00
559 lines
20 KiB
C#
559 lines
20 KiB
C#
using System;
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using System.Runtime.InteropServices;
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using System.Threading;
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using System.IO;
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using System.Threading.Tasks;
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using Microsoft.Win32.SafeHandles;
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namespace DS4Windows
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{
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public class HidDevice : IDisposable
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{
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public enum ReadStatus
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{
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Success = 0,
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WaitTimedOut = 1,
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WaitFail = 2,
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NoDataRead = 3,
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ReadError = 4,
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NotConnected = 5
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}
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private readonly string _description;
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private readonly string _devicePath;
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private readonly HidDeviceAttributes _deviceAttributes;
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private readonly HidDeviceCapabilities _deviceCapabilities;
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private bool _monitorDeviceEvents;
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private string serial = null;
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private const string BLANK_SERIAL = "00:00:00:00:00:00";
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internal HidDevice(string devicePath, string description = null)
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{
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_devicePath = devicePath;
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_description = description;
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try
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{
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var hidHandle = OpenHandle(_devicePath, false, enumerate: true);
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_deviceAttributes = GetDeviceAttributes(hidHandle);
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_deviceCapabilities = GetDeviceCapabilities(hidHandle);
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hidHandle.Close();
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}
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catch (Exception exception)
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{
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Console.WriteLine(exception.Message);
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throw new Exception(string.Format("Error querying HID device '{0}'.", devicePath), exception);
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}
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}
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public SafeFileHandle safeReadHandle { get; private set; }
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public FileStream fileStream { get; private set; }
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public bool IsOpen { get; private set; }
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public bool IsExclusive { get; private set; }
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public bool IsConnected { get { return HidDevices.IsConnected(_devicePath); } }
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public string Description { get { return _description; } }
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public HidDeviceCapabilities Capabilities { get { return _deviceCapabilities; } }
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public HidDeviceAttributes Attributes { get { return _deviceAttributes; } }
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public string DevicePath { get { return _devicePath; } }
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public override string ToString()
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{
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return string.Format("VendorID={0}, ProductID={1}, Version={2}, DevicePath={3}",
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_deviceAttributes.VendorHexId,
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_deviceAttributes.ProductHexId,
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_deviceAttributes.Version,
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_devicePath);
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}
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public void OpenDevice(bool isExclusive)
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{
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if (IsOpen) return;
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try
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{
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if (safeReadHandle == null || safeReadHandle.IsInvalid)
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safeReadHandle = OpenHandle(_devicePath, isExclusive, enumerate: false);
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}
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catch (Exception exception)
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{
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IsOpen = false;
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throw new Exception("Error opening HID device.", exception);
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}
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IsOpen = !safeReadHandle.IsInvalid;
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IsExclusive = isExclusive;
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}
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public void OpenFileStream(int reportSize)
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{
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if (fileStream == null && !safeReadHandle.IsInvalid)
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{
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fileStream = new FileStream(safeReadHandle, FileAccess.ReadWrite, reportSize, true);
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}
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}
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public bool IsFileStreamOpen()
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{
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bool result = false;
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if (fileStream != null)
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{
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result = !fileStream.SafeFileHandle.IsInvalid && !fileStream.SafeFileHandle.IsClosed;
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}
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return result;
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}
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public void CloseDevice()
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{
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if (!IsOpen) return;
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closeFileStreamIO();
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IsOpen = false;
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}
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public void Dispose()
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{
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CancelIO();
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CloseDevice();
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}
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public void CancelIO()
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{
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if (IsOpen)
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NativeMethods.CancelIoEx(safeReadHandle.DangerousGetHandle(), IntPtr.Zero);
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}
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public bool ReadInputReport(byte[] data)
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{
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if (safeReadHandle == null)
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safeReadHandle = OpenHandle(_devicePath, true, enumerate: false);
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return NativeMethods.HidD_GetInputReport(safeReadHandle, data, data.Length);
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}
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public bool WriteFeatureReport(byte[] data)
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{
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bool result = false;
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if (IsOpen && safeReadHandle != null)
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{
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result = NativeMethods.HidD_SetFeature(safeReadHandle, data, data.Length);
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}
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return result;
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}
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private static HidDeviceAttributes GetDeviceAttributes(SafeFileHandle hidHandle)
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{
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var deviceAttributes = default(NativeMethods.HIDD_ATTRIBUTES);
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deviceAttributes.Size = Marshal.SizeOf(deviceAttributes);
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NativeMethods.HidD_GetAttributes(hidHandle.DangerousGetHandle(), ref deviceAttributes);
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return new HidDeviceAttributes(deviceAttributes);
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}
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private static HidDeviceCapabilities GetDeviceCapabilities(SafeFileHandle hidHandle)
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{
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var capabilities = default(NativeMethods.HIDP_CAPS);
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var preparsedDataPointer = default(IntPtr);
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if (NativeMethods.HidD_GetPreparsedData(hidHandle.DangerousGetHandle(), ref preparsedDataPointer))
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{
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NativeMethods.HidP_GetCaps(preparsedDataPointer, ref capabilities);
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NativeMethods.HidD_FreePreparsedData(preparsedDataPointer);
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}
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return new HidDeviceCapabilities(capabilities);
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}
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private void closeFileStreamIO()
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{
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if (fileStream != null)
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{
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try
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{
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fileStream.Close();
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}
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catch (IOException) { }
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catch (OperationCanceledException) { }
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}
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fileStream = null;
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Console.WriteLine("Close fs");
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if (safeReadHandle != null && !safeReadHandle.IsInvalid)
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{
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try
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{
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if (!safeReadHandle.IsClosed)
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{
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safeReadHandle.Close();
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Console.WriteLine("Close sh");
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}
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}
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catch (IOException) { }
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}
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safeReadHandle = null;
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}
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public void flush_Queue()
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{
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if (safeReadHandle != null)
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{
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NativeMethods.HidD_FlushQueue(safeReadHandle);
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}
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}
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private ReadStatus ReadWithFileStreamTask(byte[] inputBuffer)
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{
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try
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{
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if (fileStream.Read(inputBuffer, 0, inputBuffer.Length) > 0)
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{
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return ReadStatus.Success;
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}
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else
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{
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return ReadStatus.NoDataRead;
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}
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}
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catch (Exception)
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{
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return ReadStatus.ReadError;
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}
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}
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public ReadStatus ReadFile(byte[] inputBuffer)
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{
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if (safeReadHandle == null)
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safeReadHandle = OpenHandle(_devicePath, true, enumerate: false);
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try
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{
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uint bytesRead;
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if (NativeMethods.ReadFile(safeReadHandle.DangerousGetHandle(), inputBuffer, (uint)inputBuffer.Length, out bytesRead, IntPtr.Zero))
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{
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return ReadStatus.Success;
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}
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else
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{
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return ReadStatus.NoDataRead;
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}
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}
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catch (Exception)
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{
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return ReadStatus.ReadError;
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}
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}
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public ReadStatus ReadWithFileStream(byte[] inputBuffer)
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{
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try
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{
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if (fileStream.Read(inputBuffer, 0, inputBuffer.Length) > 0)
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{
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return ReadStatus.Success;
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}
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else
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{
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return ReadStatus.NoDataRead;
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}
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}
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catch (Exception)
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{
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return ReadStatus.ReadError;
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}
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}
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public ReadStatus ReadWithFileStream(byte[] inputBuffer, int timeout)
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{
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try
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{
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if (safeReadHandle == null)
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safeReadHandle = OpenHandle(_devicePath, true, enumerate: false);
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if (fileStream == null && !safeReadHandle.IsInvalid)
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fileStream = new FileStream(safeReadHandle, FileAccess.ReadWrite, inputBuffer.Length, true);
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if (!safeReadHandle.IsInvalid && fileStream.CanRead)
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{
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Task<ReadStatus> readFileTask = new Task<ReadStatus>(() => ReadWithFileStreamTask(inputBuffer));
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readFileTask.Start();
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bool success = readFileTask.Wait(timeout);
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if (success)
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{
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if (readFileTask.Result == ReadStatus.Success)
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{
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return ReadStatus.Success;
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}
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else if (readFileTask.Result == ReadStatus.ReadError)
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{
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return ReadStatus.ReadError;
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}
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else if (readFileTask.Result == ReadStatus.NoDataRead)
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{
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return ReadStatus.NoDataRead;
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}
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}
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else
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return ReadStatus.WaitTimedOut;
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}
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}
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catch (Exception e)
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{
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if (e is AggregateException)
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{
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Console.WriteLine(e.Message);
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return ReadStatus.WaitFail;
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}
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else
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{
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return ReadStatus.ReadError;
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}
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}
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return ReadStatus.ReadError;
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}
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public ReadStatus ReadAsyncWithFileStream(byte[] inputBuffer, int timeout)
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{
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try
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{
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if (safeReadHandle == null)
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safeReadHandle = OpenHandle(_devicePath, true, enumerate: false);
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if (fileStream == null && !safeReadHandle.IsInvalid)
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fileStream = new FileStream(safeReadHandle, FileAccess.ReadWrite, inputBuffer.Length, true);
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if (!safeReadHandle.IsInvalid && fileStream.CanRead)
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{
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Task<int> readTask = fileStream.ReadAsync(inputBuffer, 0, inputBuffer.Length);
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bool success = readTask.Wait(timeout);
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if (success)
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{
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if (readTask.Result > 0)
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{
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return ReadStatus.Success;
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}
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else
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{
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return ReadStatus.NoDataRead;
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}
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}
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else
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{
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return ReadStatus.WaitTimedOut;
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}
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}
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}
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catch (Exception e)
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{
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if (e is AggregateException)
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{
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Console.WriteLine(e.Message);
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return ReadStatus.WaitFail;
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}
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else
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{
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return ReadStatus.ReadError;
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}
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}
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return ReadStatus.ReadError;
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}
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public bool WriteOutputReportViaControl(byte[] outputBuffer)
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{
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if (safeReadHandle == null)
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{
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safeReadHandle = OpenHandle(_devicePath, true, enumerate: false);
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}
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if (NativeMethods.HidD_SetOutputReport(safeReadHandle, outputBuffer, outputBuffer.Length))
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return true;
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else
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return false;
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}
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private bool WriteOutputReportViaInterruptTask(byte[] outputBuffer)
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{
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try
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{
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fileStream.Write(outputBuffer, 0, outputBuffer.Length);
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return true;
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}
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catch (Exception e)
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{
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Console.WriteLine(e.Message);
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return false;
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}
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}
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public bool WriteOutputReportViaInterrupt(byte[] outputBuffer, int timeout)
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{
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try
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{
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if (safeReadHandle == null)
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{
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safeReadHandle = OpenHandle(_devicePath, true, enumerate: false);
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}
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if (fileStream == null && !safeReadHandle.IsInvalid)
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{
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fileStream = new FileStream(safeReadHandle, FileAccess.ReadWrite, outputBuffer.Length, true);
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}
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if (fileStream != null && fileStream.CanWrite && !safeReadHandle.IsInvalid)
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{
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fileStream.Write(outputBuffer, 0, outputBuffer.Length);
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return true;
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}
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else
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{
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return false;
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}
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}
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catch (Exception)
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{
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return false;
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}
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}
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public bool WriteAsyncOutputReportViaInterrupt(byte[] outputBuffer)
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{
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try
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{
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if (safeReadHandle == null)
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{
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safeReadHandle = OpenHandle(_devicePath, true, enumerate: false);
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}
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if (fileStream == null && !safeReadHandle.IsInvalid)
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{
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fileStream = new FileStream(safeReadHandle, FileAccess.ReadWrite, outputBuffer.Length, true);
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}
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if (fileStream != null && fileStream.CanWrite && !safeReadHandle.IsInvalid)
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{
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Task writeTask = fileStream.WriteAsync(outputBuffer, 0, outputBuffer.Length);
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//fileStream.Write(outputBuffer, 0, outputBuffer.Length);
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return true;
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}
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else
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{
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return false;
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}
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}
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catch (Exception)
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{
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return false;
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}
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}
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private SafeFileHandle OpenHandle(String devicePathName, Boolean isExclusive, bool enumerate)
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{
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SafeFileHandle hidHandle;
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uint access = enumerate ? 0 : NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE;
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if (isExclusive)
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{
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hidHandle = NativeMethods.CreateFile(devicePathName, access, 0, IntPtr.Zero, NativeMethods.OpenExisting, 0x20000000 | 0x80000000 | 0x100 | NativeMethods.FILE_FLAG_OVERLAPPED, 0);
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}
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else
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{
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hidHandle = NativeMethods.CreateFile(devicePathName, access, NativeMethods.FILE_SHARE_READ | NativeMethods.FILE_SHARE_WRITE, IntPtr.Zero, NativeMethods.OpenExisting, 0x20000000 | 0x80000000 | 0x100 | NativeMethods.FILE_FLAG_OVERLAPPED, 0);
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}
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return hidHandle;
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}
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public bool readFeatureData(byte[] inputBuffer)
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{
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return NativeMethods.HidD_GetFeature(safeReadHandle.DangerousGetHandle(), inputBuffer, inputBuffer.Length);
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}
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public void resetSerial()
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{
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serial = null;
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}
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public string readSerial()
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{
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if (serial != null)
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return serial;
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// Some devices don't have MAC address (especially gamepads with USB only suports in PC). If the serial number reading fails
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// then use dummy zero MAC address, because there is a good chance the gamepad stll works in DS4Windows app (the code would throw
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// an index out of bounds exception anyway without IF-THEN-ELSE checks after trying to read a serial number).
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if (Capabilities.InputReportByteLength == 64)
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{
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byte[] buffer = new byte[16];
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buffer[0] = 18;
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if (readFeatureData(buffer))
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serial = String.Format("{0:X02}:{1:X02}:{2:X02}:{3:X02}:{4:X02}:{5:X02}",
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buffer[6], buffer[5], buffer[4], buffer[3], buffer[2], buffer[1]);
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}
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else
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{
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byte[] buffer = new byte[126];
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#if WIN64
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ulong bufferLen = 126;
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#else
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uint bufferLen = 126;
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#endif
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if (NativeMethods.HidD_GetSerialNumberString(safeReadHandle.DangerousGetHandle(), buffer, bufferLen))
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{
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string MACAddr = System.Text.Encoding.Unicode.GetString(buffer).Replace("\0", string.Empty).ToUpper();
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MACAddr = $"{MACAddr[0]}{MACAddr[1]}:{MACAddr[2]}{MACAddr[3]}:{MACAddr[4]}{MACAddr[5]}:{MACAddr[6]}{MACAddr[7]}:{MACAddr[8]}{MACAddr[9]}:{MACAddr[10]}{MACAddr[11]}";
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serial = MACAddr;
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}
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}
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// If serial# reading failed then generate a dummy MAC address based on HID device path (WinOS generated runtime unique value based on connected usb port and hub or BT channel).
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// The device path remains the same as long the gamepad is always connected to the same usb/BT port, but may be different in other usb ports. Therefore this value is unique
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// as long the same device is always connected to the same usb port.
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if (serial == null)
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{
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string MACAddr = string.Empty;
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AppLogger.LogToGui($"WARNING: Failed to read serial# from a gamepad ({this._deviceAttributes.VendorHexId}/{this._deviceAttributes.ProductHexId}). Generating MAC address from a device path. From now on you should connect this gamepad always into the same USB port or BT pairing host to keep the same device path.", true);
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try
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{
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// Substring: \\?\hid#vid_054c&pid_09cc&mi_03#7&1f882A25&0&0001#{4d1e55b2-f16f-11cf-88cb-001111000030} -> \\?\hid#vid_054c&pid_09cc&mi_03#7&1f882A25&0&0001#
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int endPos = this.DevicePath.LastIndexOf('{');
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if (endPos < 0)
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endPos = this.DevicePath.Length;
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// String array: \\?\hid#vid_054c&pid_09cc&mi_03#7&1f882A25&0&0001# -> [0]=\\?\hidvid_054c, [1]=pid_09cc, [2]=mi_037, [3]=1f882A25, [4]=0, [5]=0001
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string[] devPathItems = this.DevicePath.Substring(0, endPos).Replace("#", "").Replace("-", "").Replace("{", "").Replace("}", "").Split('&');
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if (devPathItems.Length >= 3)
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MACAddr = devPathItems[devPathItems.Length - 3].ToUpper() // 1f882A25
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+ devPathItems[devPathItems.Length - 2].ToUpper() // 0
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+ devPathItems[devPathItems.Length - 1].TrimStart('0').ToUpper(); // 0001 -> 1
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else if (devPathItems.Length >= 1)
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// Device and usb hub and port identifiers missing in devicePath string. Fallback to use vendor and product ID values and
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// take a number from the last part of the devicePath. Hopefully the last part is a usb port number as it usually should be.
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MACAddr = this._deviceAttributes.VendorId.ToString("X4")
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+ this._deviceAttributes.ProductId.ToString("X4")
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+ devPathItems[devPathItems.Length - 1].TrimStart('0').ToUpper();
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if (!string.IsNullOrEmpty(MACAddr))
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{
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MACAddr = MACAddr.PadRight(12, '0');
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serial = $"{MACAddr[0]}{MACAddr[1]}:{MACAddr[2]}{MACAddr[3]}:{MACAddr[4]}{MACAddr[5]}:{MACAddr[6]}{MACAddr[7]}:{MACAddr[8]}{MACAddr[9]}:{MACAddr[10]}{MACAddr[11]}";
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}
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else
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// Hmm... Shold never come here. Strange format in devicePath because all identifier items of devicePath string are missing.
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serial = BLANK_SERIAL;
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}
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catch (Exception e)
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{
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AppLogger.LogToGui($"ERROR: Failed to generate runtime MAC address from device path {this.DevicePath}. {e.Message}", true);
|
|
serial = BLANK_SERIAL;
|
|
}
|
|
}
|
|
|
|
return serial;
|
|
}
|
|
}
|
|
}
|