private static void RemoveBackground(BlockingCollection <BitmapWithFilePathAndSeq> inputQueue, Bitmap background_bm, CancellationTokenSource cts, CancellationToken suspensionToken, params BlockingCollection <BitmapWithFilePathAndSeq>[] outputQueues)
{
CancellationToken token = cts.Token;
try
{
foreach (var input in inputQueue.GetConsumingEnumerable())
{
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;
}
outputQueues[i].Add(new BitmapWithFilePathAndSeq()
{
FilePath = input.FilePath,
Image = (Bitmap)result.Clone(),
SeqId = input.SeqId,
}, token);
}
}
}
if (suspensionToken.IsCancellationRequested)
{
break;
}
}
}
catch (Exception ex)
{
if (!(ex is OperationCanceledException))
{
cts.Cancel();
throw;
}
}
finally
{
foreach (var outputQueue in outputQueues)
{
outputQueue.CompleteAdding();
}
}
}
/// <summary>
/// Executes a image processing operation.
/// </summary>
/// <param name="filePath">Path to the file image to process.</param>
/// <param name="background_bm">The background image.</param>
private static void ExecuteSequentialOperation(string filePath, Bitmap background_bm)
{
Bitmap target_bm = ImageProcessor.LoadFileAsImage(filePath);
target_bm = ImageProcessor.RemoveBackground(target_bm, background_bm);
Bitmap target_thumb_bm = ImageProcessor.ResizeToThumbnail(target_bm);
string output = OutputDirectory + Path.DirectorySeparatorChar + Path.GetFileName(filePath);
string output_thumb = OutputDirectory + Path.DirectorySeparatorChar + Path.GetFileNameWithoutExtension(filePath) + "_thumbnail" + Path.GetExtension(filePath);
ImageProcessor.SaveBitmapToFile(target_bm, output);
ImageProcessor.SaveBitmapToFile(target_thumb_bm, output_thumb);
}