unsafe internal CyUSBBOS(IntPtr handle, byte[] BosDescrData)
{
// initialize to null
USB20_DeviceExt = null;
SS_DeviceCap = null;
Container_ID = null;
// parse the Bos Descriptor data
fixed(byte *buf = BosDescrData)
{
USB_BOS_DESCRIPTOR *BosDesc = (USB_BOS_DESCRIPTOR *)buf;
_bLength = BosDesc->bLength;
_bDescriptorType = BosDesc->bDescriptorType;
_bNumDeviceCaps = BosDesc->bNumDeviceCaps;
_wToatalLength = BosDesc->wToatalLength;
int totallen = _wToatalLength;
totallen -= BosDesc->bLength;
if (totallen < 0)
{
return;
}
byte *DevCap = (byte *)(buf + BosDesc->bLength); // get nex descriptor
for (int i = 0; i < _bNumDeviceCaps; i++)
{
//check capability type
switch (DevCap[2])
{
case CyConst.USB_BOS_CAPABILITY_TYPE_USB20_EXT:
{
USB_BOS_USB20_DEVICE_EXTENSION *USB20_ext = (USB_BOS_USB20_DEVICE_EXTENSION *)DevCap;
totallen -= USB20_ext->bLength;
DevCap = (byte *)DevCap + USB20_ext->bLength;
USB20_DeviceExt = new CyBOS_USB20_DEVICE_EXT(handle, USB20_ext);
break;
}
case CyConst.USB_BOS_CAPABILITY_TYPE_SUPERSPEED_USB:
{
USB_BOS_SS_DEVICE_CAPABILITY *SS_Capability = (USB_BOS_SS_DEVICE_CAPABILITY *)DevCap;
totallen -= SS_Capability->bLength;
DevCap = (byte *)DevCap + SS_Capability->bLength;
SS_DeviceCap = new CyBOS_SS_DEVICE_CAPABILITY(handle, SS_Capability);
break;
}
case CyConst.USB_BOS_CAPABILITY_TYPE_CONTAINER_ID:
{
USB_BOS_CONTAINER_ID *USB_ContainerID = (USB_BOS_CONTAINER_ID *)DevCap;
totallen -= USB_ContainerID->bLength;
DevCap = (byte *)DevCap + USB_ContainerID->bLength;
Container_ID = new CyBOS_CONTAINER_ID(handle, USB_ContainerID);
break;
}
default:
{
InvalidDevCap = new InvalidDeviceCapability();
break;
}
}
if (totallen < 0)
{
break;
}
}
}
}
internal unsafe CyUSBBOS(IntPtr handle, byte[] BosDescrData)
{
// initialize to null
USB20_DeviceExt = null;
SS_DeviceCap = null;
Container_ID = null;
// parse the Bos Descriptor data
fixed (byte* buf = BosDescrData)
{
USB_BOS_DESCRIPTOR* BosDesc = (USB_BOS_DESCRIPTOR*)buf;
_bLength = BosDesc->bLength;
_bDescriptorType = BosDesc->bDescriptorType;
_bNumDeviceCaps = BosDesc->bNumDeviceCaps;
_wToatalLength = BosDesc->wToatalLength;
int totallen = _wToatalLength;
totallen -= BosDesc->bLength;
if (totallen < 0)
return;
byte* DevCap = (byte*)(buf + BosDesc->bLength); // get nex descriptor
for (int i = 0; i < _bNumDeviceCaps; i++)
{
//check capability type
switch (DevCap[2])
{
case CyConst.USB_BOS_CAPABILITY_TYPE_USB20_EXT:
{
USB_BOS_USB20_DEVICE_EXTENSION* USB20_ext = (USB_BOS_USB20_DEVICE_EXTENSION*)DevCap;
totallen -= USB20_ext->bLength;
DevCap = (byte*)DevCap + USB20_ext->bLength;
USB20_DeviceExt = new CyBOS_USB20_DEVICE_EXT(handle, USB20_ext);
break;
}
case CyConst.USB_BOS_CAPABILITY_TYPE_SUPERSPEED_USB:
{
USB_BOS_SS_DEVICE_CAPABILITY* SS_Capability = (USB_BOS_SS_DEVICE_CAPABILITY*)DevCap;
totallen -= SS_Capability->bLength;
DevCap = (byte*)DevCap + SS_Capability->bLength;
SS_DeviceCap = new CyBOS_SS_DEVICE_CAPABILITY(handle, SS_Capability);
break;
}
case CyConst.USB_BOS_CAPABILITY_TYPE_CONTAINER_ID:
{
USB_BOS_CONTAINER_ID* USB_ContainerID = (USB_BOS_CONTAINER_ID*)DevCap;
totallen -= USB_ContainerID->bLength;
DevCap = (byte*)DevCap + USB_ContainerID->bLength;
Container_ID = new CyBOS_CONTAINER_ID(handle, USB_ContainerID);
break;
}
default:
{
InvalidDevCap = new InvalidDeviceCapability();
break;
}
}
if (totallen < 0)
break;
}
}
}
