private static void LoadImages(string InputDirectory, BlockingCollection <BitmapWithFilePathAndSeq> outputQueue, CancellationTokenSource cts)
{
int SeqIdNext = 1;
CancellationToken token = cts.Token;
try
{
foreach (string filePath in Directory.GetFiles(InputDirectory))
{
if (token.IsCancellationRequested)
{
break;
}
if (Path.GetExtension(filePath) == ".bmp")
{
Bitmap bm = ImageProcessor.LoadFileAsImage(filePath);
var outputObj = new BitmapWithFilePathAndSeq()
{
FilePath = filePath,
Image = bm,
SeqId = SeqIdNext++
};
outputQueue.Add(outputObj, token);
}
}
}
catch (Exception ex)
{
if (!(ex is OperationCanceledException))
{
cts.Cancel();
throw;
}
}
finally
{
outputQueue.CompleteAdding();
}
}
private static void Multiplexer(BlockingCollection <BitmapWithFilePathAndSeq> outputQueue, CancellationTokenSource cts, params BlockingCollection <BitmapWithFilePathAndSeq>[] inputQueues)
{
CancellationToken token = cts.Token;
int nextIndex = 1;
var foundItems = new List <BitmapWithFilePathAndSeq>();
try
{
while (!inputQueues.All(q => q.IsCompleted))
{
if (token.IsCancellationRequested)
{
break;
}
BlockingCollection <BitmapWithFilePathAndSeq> .TryTakeFromAny(inputQueues, out var item, MULTIPLEXOR_TIMEOUT, token);
if (item != null)
{
if (item.SeqId == nextIndex)
{
outputQueue.Add(item, token);
BitmapWithFilePathAndSeq nextFound = null;
do
{
if (token.IsCancellationRequested)
{
break;
}
nextIndex++;
nextFound = foundItems.Find(i => i.SeqId == nextIndex);
if (nextFound != null)
{
//foundItems.Remove(nextFound);
outputQueue.Add(nextFound, token);
}
} while (nextFound != null);
}
else
{
foundItems.Add(item);
}
}
}
}
catch (Exception ex)
{
if (!(ex is OperationCanceledException))
{
cts.Cancel();
throw;
}
}
finally
{
outputQueue.CompleteAdding();
}
}