IBluetoothDeviceInfo[] DoDiscoverDevices(
int maxDevices, bool authenticated, bool remembered, bool unknown, bool discoverableOnly,
BluetoothClient.LiveDiscoveryCallback liveDiscoHandler, object liveDiscoState)
{
Console.WriteLine("DoDiscoverDevices");
var discoTime = DateTime.UtcNow;
List <IBluetoothDeviceInfo> known = new List <IBluetoothDeviceInfo>(); // hack often GC fodder
var bus = _fcty.BluezDbus;
known = bus.GetDeviceList_OnDefaultAdapter();
//
List <IBluetoothDeviceInfo> inquired = null;
if (discoverableOnly || unknown)
{
inquired = new List <IBluetoothDeviceInfo>();
double td = InquiryLength.TotalSeconds;
const double Multiplier = 1.25d;
td /= Multiplier;
int t = (int)td;
StackConsts.IREQ_int flags = StackConsts.IREQ_int.IREQ_CACHE_FLUSH;
//
var TypeofItem = typeof(Structs.inquiry_info);
var SizeofItem = Marshal.SizeOf(TypeofItem);
IntPtr pii = BluezUtils.malloc(maxDevices * SizeofItem);
try {
Console.WriteLine("Gonna hci_inquiry num_rsp: {0}, t: {1} ({2} was {3}) ", maxDevices, t, td, InquiryLength);
// TO-DO LAP/IAC: var lap = InquiryAccessCode;
//var stackTrace = new StackTrace();
//var msg = "Gonna hci_inquiry at: " + stackTrace;
//Debug.WriteLine(msg);
//Console.WriteLine(msg);
int num = NativeMethods.hci_inquiry(_fcty.DevId, t, maxDevices, IntPtr.Zero, ref pii, flags);
Console.WriteLine("inquiry num=" + num);
//BluezUtils.CheckAndThrow((BluezError)num, "hci_inquiry");
BluezUtils.Assert((BluezError)num, "hci_inquiry");
//
IntPtr pCur = pii;
for (int i = 0; i < num; i++)
{
var cur = (Structs.inquiry_info)Marshal.PtrToStructure(pCur, TypeofItem);
var bdi = BluezDeviceInfo.CreateFromInquiry(_fcty, cur);
inquired.Add(bdi);
pCur = PointerAdd(pCur, SizeofItem);
}//for
} finally {
BluezUtils.free(pii);
}
}
//
var merged = BluetoothClient.DiscoverDevicesMerge(
authenticated, remembered, unknown,
known, inquired, discoverableOnly, discoTime);
return(merged.ToArray());
}
internal static extern int hci_inquiry(int dev_id, int len, int num_rsp, byte[] lap,
ref IntPtr /*"inquiry_info **"*/ ppii, StackConsts.IREQ_int flags);
