internal UsbDevice(WDU_DEVICE_HANDLE hDev, ref WDU_DEVICE pDeviceInfo)
{
WDU_CONFIGURATION pConfig = (WDU_CONFIGURATION)Marshal.PtrToStructure(pDeviceInfo.pActiveConfig,
typeof(WDU_CONFIGURATION));
dwNumOfInterfaces = pConfig.dwNumInterfaces;
interfacesInfo = new INTERFACE_INFO[dwNumOfInterfaces];
hDevice = hDev;
for (uint i = 0; i < dwNumOfInterfaces; ++i)
{
interfacesInfo[i].wduInterface = (WDU_INTERFACE)Marshal.PtrToStructure(
pDeviceInfo.pActiveInterface(i), typeof(WDU_INTERFACE));
WDU_ALTERNATE_SETTING pAltSetting = (WDU_ALTERNATE_SETTING)Marshal.PtrToStructure(
interfacesInfo[i].wduInterface.pActiveAltSetting, typeof(WDU_ALTERNATE_SETTING));
if (i == 0)
{
dwInterfaceNum = pAltSetting.Descriptor.bInterfaceNumber;
dwAltSettingNum = pAltSetting.Descriptor.bAlternateSetting;
pPipesList = new PipeList(pDeviceInfo.Pipe0, pAltSetting, hDevice);
}
interfacesInfo[i].bInterfaceNumber = pAltSetting.Descriptor.bInterfaceNumber;
dwNumOfAltSettingsTotal += interfacesInfo[i].wduInterface.dwNumAltSettings;
}
DWORD dwStatus = wdu_lib_decl.WDU_GetDeviceAddr(hDevice,
ref dwAddr);
wVid = (WORD)pDeviceInfo.Descriptor.idVendor;
wPid = (WORD)pDeviceInfo.Descriptor.idProduct;
}
internal PipeList(WDU_PIPE_INFO pPipe0, WDU_ALTERNATE_SETTING
pActiveAltSetting, WDU_DEVICE_HANDLE hDev)
{
WDU_PIPE_INFO pipe_info;
DWORD dwPipeIndex = 0;
DWORD dwNumOfPipes = pActiveAltSetting.Descriptor.bNumEndpoints;
DWORD dwPipeSize = (DWORD)Marshal.SizeOf(typeof(WDU_PIPE_INFO));
//inserting the control pipe to the list
this.Insert(0, new UsbPipe(pPipe0, hDev));
//retrieving the rest of the pipes from the active alternating
//settings struct and inserting them into the pipes' list
for (dwPipeIndex = 0; dwPipeIndex < dwNumOfPipes; ++dwPipeIndex)
{
pipe_info = (WDU_PIPE_INFO)Convert.ChangeType
(Marshal.PtrToStructure(new
IntPtr(pActiveAltSetting.pPipes.ToInt64()
+ dwPipeIndex * dwPipeSize), typeof(WDU_PIPE_INFO)),
typeof(WDU_PIPE_INFO));
UsbPipe pipe = new UsbPipe(pipe_info, hDev);
this.Insert((int)dwPipeIndex + 1, pipe);
}
}
public DWORD ChangeAlternateSetting(DWORD newInterface, DWORD newSetting)
{
DWORD dwStatus = (DWORD)WD_ERROR_CODES.WD_STATUS_SUCCESS;
// if the chosen setting is the same as it was - do nothing
if (newInterface == this.dwInterfaceNum && newSetting == this.dwAltSettingNum)
{
return(dwStatus);
}
dwStatus = wdu_lib_decl.WDU_SetInterface(hDevice, newInterface,
newSetting);
if (dwStatus != (DWORD)WD_ERROR_CODES.WD_STATUS_SUCCESS)
{
return(dwStatus);
}
IntPtr ppDeviceInfo = (System.IntPtr) 0;
dwStatus = (DWORD)wdu_lib_decl.WDU_GetDeviceInfo(hDevice,
ref ppDeviceInfo);
if (dwStatus != (DWORD)WD_ERROR_CODES.WD_STATUS_SUCCESS)
{
return(dwStatus);
}
WDU_DEVICE pDeviceInfo = (WDU_DEVICE)Marshal.PtrToStructure(ppDeviceInfo,
typeof(WDU_DEVICE));
int index = GetInterfaceIndexByNumber(newInterface);
interfacesInfo[index].wduInterface = (WDU_INTERFACE)Marshal.PtrToStructure(
pDeviceInfo.pActiveInterface((uint)index), typeof(WDU_INTERFACE));
WDU_ALTERNATE_SETTING pActiveAltSetting =
(WDU_ALTERNATE_SETTING)Marshal.PtrToStructure(interfacesInfo[index].
wduInterface.pActiveAltSetting, typeof(WDU_ALTERNATE_SETTING));
dwInterfaceNum = newInterface;
dwAltSettingNum = newSetting;
pPipesList = new PipeList(((UsbPipe)(pPipesList[0])).GetPipeInfo(),
pActiveAltSetting, hDevice);
wdu_lib_decl.WDU_PutDeviceInfo(ppDeviceInfo);
return(dwStatus);
}
