// Methods
private static IAsyncResult _BeginGetDvdInfo(DvdInfoRequestData dvdInfoRequestData, string dvdId, AsyncCallback callback, object callbackData, bool bUseEnhancedMetadata)
{
if (dvdInfoRequestData == null)
{
//if (WorkOffline)
//{
// return null;
//}
if (string.IsNullOrEmpty(dvdId))
{
return null;
}
dvdInfoRequestData = new DvdInfoRequestData(dvdId);
if (!bUseEnhancedMetadata)
{
s_currentRequests[dvdId] = dvdInfoRequestData;
}
//string strUrl = MetadataURLForDisc(dvdId, bUseEnhancedMetadata);
string strUrl = MetadataURL(bUseEnhancedMetadata)+dvdId;//.Replace("|","");//string.Format(metMetadataURLForDisc(dvdId, bUseEnhancedMetadata);
uint cbMaxSize = 0x19000;
AsyncCallback callback2 = bUseEnhancedMetadata ? new AsyncCallback(DvdInfo.InetStreamCallbackEx) : new AsyncCallback(DvdInfo.InetStreamCallback);
bool flag = false;
try
{
InetStream.BeginRead(strUrl, callback2, dvdInfoRequestData, cbMaxSize);
}
catch (WebException exception)
{
flag = true;
if (dvdInfoRequestData != null)
{
dvdInfoRequestData.Exception = exception;
}
}
catch (InvalidOperationException exception2)
{
flag = true;
if (dvdInfoRequestData != null)
{
dvdInfoRequestData.Exception = exception2;
}
}
if (flag)
{
CompleteTheRequest(dvdInfoRequestData, true, true);
}
}
DvdInfoCallback dvdInfoCallback = new DvdInfoCallback(callback, callbackData);
if (dvdInfoRequestData.IsCompleted)
{
return IssueCallback(dvdInfoRequestData, dvdInfoCallback, true);
}
if (callback != null)
{
dvdInfoRequestData.Callbacks.Add(dvdInfoCallback);
}
return new DvdInfoAsyncResult(dvdInfoRequestData, dvdInfoCallback.CallbackData, false);
}
private static void CompleteTheRequest(DvdInfoRequestData dvdInfoRequestData, bool fRemove, bool synchronous)
{
lock (s_lock)
{
dvdInfoRequestData.IsCompleted = true;
dvdInfoRequestData.AsyncEvent.Set();
for (int i = 0; i < dvdInfoRequestData.Callbacks.Count; i++)
{
DvdInfoCallback dvdInfoCallback = (DvdInfoCallback)dvdInfoRequestData.Callbacks[i];
IssueCallback(dvdInfoRequestData, dvdInfoCallback, synchronous);
}
dvdInfoRequestData.Callbacks.Clear();
if (fRemove && (dvdInfoRequestData.DvdId != null))
{
s_currentRequests.Remove(dvdInfoRequestData.DvdId);
}
}
}
private static DvdInfoAsyncResult IssueCallback(DvdInfoRequestData dvdInfoRequestData, DvdInfoCallback dvdInfoCallback, bool completedSynchronously)
{
DvdInfoAsyncResult ar = new DvdInfoAsyncResult(dvdInfoRequestData, dvdInfoCallback.CallbackData, completedSynchronously);
if (dvdInfoCallback.Callback != null)
{
if (completedSynchronously)
{
if (dvdInfoCallback != null)
{
dvdInfoCallback.Callback(ar);
}
return ar;
}
//TODO: rewire callback
//Application.DeferredInvoke(dvdInfoCallback.Callback, new object[] { ar });
}
return ar;
}
public static IAsyncResult BeginGetDvdInfo(string dvdId, AsyncCallback callback, object callbackData)
{
lock (s_lock)
{
DvdInfoRequestData dvdInfoRequestData = (DvdInfoRequestData)s_currentRequests[dvdId];
if (dvdInfoRequestData == null)
{
DvdInfo dvdInfo = LoadFromCache(dvdId);
if (IsValid(dvdInfo))
{
dvdInfoRequestData = new DvdInfoRequestData(dvdId);
s_currentRequests[dvdId] = dvdInfoRequestData;
dvdInfoRequestData.DvdInfo = dvdInfo;
dvdInfoRequestData.IsCompleted = true;
}
}
return _BeginGetDvdInfo(dvdInfoRequestData, dvdId, callback, callbackData, false);
}
}
