private static void CreateThumbnail(BlockingCollection <BitmapWithFilePath> inputQueue, BlockingCollection <BitmapWithFilePath> outputQueue, CancellationTokenSource cts)
{
CancellationToken token = cts.Token;
try
{
foreach (var input in inputQueue.GetConsumingEnumerable(token))
{
if (token.IsCancellationRequested)
{
break;
}
var result = ImageProcessor.ResizeToThumbnail(input.Image);
var outputObj = new BitmapWithFilePath()
{
FilePath = input.FilePath,
Image = result
};
outputQueue.Add(outputObj, token);
}
}
catch (Exception ex)
{
if (!(ex is OperationCanceledException))
{
cts.Cancel();
throw;
}
}
finally
{
outputQueue.CompleteAdding();
}
}
private static void RemoveBackground(BlockingCollection <BitmapWithFilePath> inputQueue, Bitmap background_bm, BlockingCollection <BitmapWithFilePath>[] outputQueues, CancellationTokenSource cts)
{
CancellationToken token = cts.Token;
try
{
foreach (var input in inputQueue.GetConsumingEnumerable(token))
{
if (token.IsCancellationRequested)
{
break;
}
lock (input.Image)
{
lock (background_bm)
{
var result = ImageProcessor.RemoveBackground(input.Image, background_bm);
for (int i = 0; i < outputQueues.Length; i++)
{
if (token.IsCancellationRequested)
{
break;
}
var outputObj = new BitmapWithFilePath()
{
FilePath = input.FilePath,
Image = (Bitmap)result.Clone()
};
outputQueues[i].Add(outputObj, token);
}
}
}
}
}
catch (Exception ex)
{
if (!(ex is OperationCanceledException))
{
cts.Cancel();
throw;
}
}
finally
{
foreach (var outputQueue in outputQueues)
{
outputQueue.CompleteAdding();
}
}
}
private static void LoadImages(string InputDirectory, BlockingCollection <BitmapWithFilePath> outputQueue, CancellationTokenSource cts)
{
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 BitmapWithFilePath()
{
FilePath = filePath,
Image = bm
};
outputQueue.Add(outputObj, token);
}
}
}
catch (Exception ex)
{
if (!(ex is OperationCanceledException))
{
cts.Cancel();
throw;
}
}
finally
{
outputQueue.CompleteAdding();
}
}