private bool ParseDescriptor(int length, UsbDescriptorStructure des)
{
byte[] temp = new byte[length];
if (length != ms.Read(temp, 0, length))
{
return(false);
}
return(PduMarshaler.Unmarshal(temp, des));
}
private UsbDescriptorStructure GetNextDescriptor(UsbDescriptorTypes descriptorType)
{
byte[] temp = new byte[2];
UsbDescriptorStructure result = null;
while (ms.Position < ms.Length - 2)
{
if (2 != ms.Read(temp, 0, 2))
{
return(null);
}
UsbDescriptorStructure des = new UsbDescriptorStructure();
PduMarshaler.Unmarshal(temp, des);
if (des.bDescriptorType == descriptorType)
{
ms.Seek(-2, SeekOrigin.Current);
switch (des.bDescriptorType)
{
case UsbDescriptorTypes.USB_INTERFACE_DESCRIPTOR_TYPE:
result = new USB_INTERFACE_DESCRIPTOR();
if (ParseDescriptor(USB_INTERFACE_DESCRIPTOR.DefaultSize, result))
{
return(result);
}
break;
default:
throw new NotImplementedException();
//break;
}
}
else
{
ms.Seek(des.bLength - 1, SeekOrigin.Current);
}
}
return(result);
}
