# HG changeset patch
# User Ivo Smits <Ivo@UCIS.nl>
# Date 1398177635 -7200
# Node ID d467cd38b34eac24ab6f6694383c567ef371ba16
# Parent  ac0a29c05d03f2f226bf9ef3a485050f5c9c25dd
USBLib: fix for large transfers with libusb0 on Windows, added driver uninstall function

diff -r ac0a29c05d03 -r d467cd38b34e USBLib/Communication/LibUsb0/LibUsbDevice.cs
--- a/USBLib/Communication/LibUsb0/LibUsbDevice.cs	Fri Apr 04 23:21:33 2014 +0200
+++ b/USBLib/Communication/LibUsb0/LibUsbDevice.cs	Tue Apr 22 16:40:35 2014 +0200
@@ -204,7 +204,7 @@
 					int transfered = 0;
 					while (length > 0) {
 						int ret;
-						DeviceIoControl(DeviceHandle, cltCode, ref req, LibUsbRequest.Size, (IntPtr)(b + offset), Math.Min(Int16.MaxValue, length), out ret);
+						DeviceIoControl(DeviceHandle, cltCode, ref req, LibUsbRequest.Size, (IntPtr)(b + offset), length, out ret);
 						if (ret <= 0) throw new System.IO.EndOfStreamException();
 						length -= ret;
 						offset += ret;
@@ -214,7 +214,7 @@
 				} else {
 					int cltCode = isochronous ? LibUsbIoCtl.ISOCHRONOUS_READ : LibUsbIoCtl.INTERRUPT_OR_BULK_READ;
 					int ret;
-					DeviceIoControl(DeviceHandle, cltCode, ref req, LibUsbRequest.Size, (IntPtr)(b + offset), Math.Min(UInt16.MaxValue, length), out ret);
+					DeviceIoControl(DeviceHandle, cltCode, ref req, LibUsbRequest.Size, (IntPtr)(b + offset), length, out ret);
 					return ret;
 				}
 			}
diff -r ac0a29c05d03 -r d467cd38b34e USBLib/Internal/Windows/SetupApi.cs
--- a/USBLib/Internal/Windows/SetupApi.cs	Fri Apr 04 23:21:33 2014 +0200
+++ b/USBLib/Internal/Windows/SetupApi.cs	Tue Apr 22 16:40:35 2014 +0200
@@ -94,6 +94,9 @@
 		[DllImport("setupapi.dll", CharSet = CharSet.Auto)]
 		public static extern CR CM_Reenumerate_DevNode(UInt32 dnDevInst, UInt32 ulFlags);
 
+		[DllImport("newdev.dll", SetLastError = true, CharSet = CharSet.Auto)]
+		public static extern bool DiUninstallDevice(IntPtr hwndParent, SafeDeviceInfoSetHandle DeviceInfoSet, ref SP_DEVINFO_DATA DeviceInfoData, UInt32 Flags, out Boolean NeedReboot);
+
 		//public const int DIGCF_DEFAULT = 0x00000001;  // only valid with DIGCF_DEVICEINTERFACE
 		public const int DIGCF_PRESENT = 0x00000002;
 		public const int DIGCF_ALLCLASSES = 0x00000004;
diff -r ac0a29c05d03 -r d467cd38b34e USBLib/Windows/Devices/DeviceNode.cs
--- a/USBLib/Windows/Devices/DeviceNode.cs	Fri Apr 04 23:21:33 2014 +0200
+++ b/USBLib/Windows/Devices/DeviceNode.cs	Tue Apr 22 16:40:35 2014 +0200
@@ -59,7 +59,6 @@
 		}
 		public static IList<DeviceNode> GetDevices(String enumerator, Boolean present) {
 			using (SafeDeviceInfoSetHandle dis = SetupApi.SetupDiGetClassDevsA(IntPtr.Zero, enumerator, IntPtr.Zero, (present ? DICFG.PRESENT : 0) | DICFG.ALLCLASSES)) {
-			//using (SafeDeviceInfoSetHandle dis = SetupApi.SetupDiGetClassDevsA(IntPtr.Zero, enumerator, IntPtr.Zero, DICFG.ALLCLASSES | DICFG.DEVICEINTERFACE)) {
 				return GetDevicesInSet(dis);
 			}
 		}
@@ -89,7 +88,6 @@
 				SP_DEVINFO_DATA dd = new SP_DEVINFO_DATA(true);
 				if (!SetupApi.SetupDiEnumDeviceInfo(dis, 0, ref dd))
 					return null;
-				//throw new Win32Exception(Marshal.GetLastWin32Error());
 				RegistryValueKind propertyType;
 				byte[] propBuffer = new byte[256];
 				int requiredSize;
@@ -149,7 +147,6 @@
 				SP_DEVINFO_DATA dd = new SP_DEVINFO_DATA(true);
 				if (!SetupApi.SetupDiEnumDeviceInfo(dis, 0, ref dd))
 					return null;
-					//throw new Win32Exception(Marshal.GetLastWin32Error());
 				RegistryValueKind propertyType;
 				byte[] propBuffer = new byte[256];
 				int requiredSize;
@@ -341,5 +338,18 @@
 					throw new Win32Exception(Marshal.GetLastWin32Error());
 			}
 		}
+
+		public Boolean Uninstall() {
+			using (SafeDeviceInfoSetHandle dis = SetupApi.SetupDiGetClassDevsA(IntPtr.Zero, DeviceID, IntPtr.Zero, DICFG.DEVICEINTERFACE | DICFG.ALLCLASSES)) {
+				if (dis.IsInvalid) throw new Win32Exception(Marshal.GetLastWin32Error());
+				SP_DEVINFO_DATA dd = new SP_DEVINFO_DATA(true);
+				if (!SetupApi.SetupDiEnumDeviceInfo(dis, 0, ref dd))
+					throw new Win32Exception(Marshal.GetLastWin32Error());
+				Boolean needsReboot;
+				if (!SetupApi.DiUninstallDevice(IntPtr.Zero, dis, ref dd, 0, out needsReboot))
+					throw new Win32Exception(Marshal.GetLastWin32Error());
+				return needsReboot;
+			}
+		}
 	}
 }