void inputProvider_NewFrame(object sender, NewFrameEventArgs e)
{
applicationService.DispatchFrame(e);
}
public void DispatchFrame(NewFrameEventArgs e)
{
if(sessions.Count == 0)
return;
// For each contact determinte it's target handle and group by this handle
IEnumerable<IGrouping<IntPtr, Contact>> contactsGroupedByHandle = e.Contacts.GroupBy(contact => Utils.GetWindowFromPoint(contact.Position));
// Create a list with sessions and contacts that belong to this session
Dictionary<SessionContext, List<ContactData>> sessionList = new Dictionary<SessionContext, List<ContactData>>();
foreach (IGrouping<IntPtr, Contact> handleWithContacts in contactsGroupedByHandle)
{
List<ContactData> contacts;
foreach (SessionContext sessionContext in from map in sessionToHandlesMap
where map.Value.Contains(handleWithContacts.Key)
|| map.Value.Contains(IntPtr.Zero)
select map.Key)
{
if (!sessionList.TryGetValue(sessionContext, out contacts))
{
contacts = new List<ContactData>();
sessionList.Add(sessionContext, contacts);
}
contacts.AddRange(handleWithContacts.Select(c => new ContactData(c, handleWithContacts.Key)));
}
}
List<SessionContext> emptyFrameReceivers = new List<SessionContext>(sessions.Values);
// Send contact data to session
foreach (KeyValuePair<SessionContext, List<ContactData>> keyValuePair in sessionList)
{
SessionContext session = keyValuePair.Key;
try
{
session.Callback.Frame(new FrameData(e.Timestamp, keyValuePair.Value, GetImages(session, e.Images)));
}
catch (Exception exc)
{
Trace.TraceError("Error during sending frame to application:\r\n" + exc.Message);
RemoveSession(session);
}
emptyFrameReceivers.Remove(keyValuePair.Key);
}
// Send frame data to sessions that requested empty frames
foreach (SessionContext session in emptyFrameReceivers.Where(s => s.SendEmptyFrames))
{
try
{
session.Callback.Frame(new FrameData(e.Timestamp, Enumerable.Empty<ContactData>(), GetImages(session, e.Images)));
}
catch (Exception exc)
{
Trace.TraceError("Error during sending frame to application:\r\n" + exc.Message);
RemoveSession(session);
}
}
}
internal void OnNewFrame(NewFrameEventArgs e)
{
EventHandler<NewFrameEventArgs> handler = NewFrame;
if (handler != null)
handler(this, e);
}
