public ResizeWorker(
Configuration configuration,
Buffer2DRegion <TPixel> source,
PixelConversionModifiers conversionModifiers,
ResizeKernelMap horizontalKernelMap,
ResizeKernelMap verticalKernelMap,
int destWidth,
Rectangle targetWorkingRect,
Point targetOrigin)
{
this.configuration = configuration;
this.source = source;
this.sourceRectangle = source.Rectangle;
this.conversionModifiers = conversionModifiers;
this.horizontalKernelMap = horizontalKernelMap;
this.verticalKernelMap = verticalKernelMap;
this.destWidth = destWidth;
this.targetWorkingRect = targetWorkingRect;
this.targetOrigin = targetOrigin;
this.windowBandHeight = verticalKernelMap.MaxDiameter;
// We need to make sure the working buffer is contiguous:
int workingBufferLimitHintInBytes = Math.Min(
configuration.WorkingBufferSizeHintInBytes,
configuration.MemoryAllocator.GetBufferCapacityInBytes());
int numberOfWindowBands = ResizeHelper.CalculateResizeWorkerHeightInWindowBands(
this.windowBandHeight,
destWidth,
workingBufferLimitHintInBytes);
this.workerHeight = Math.Min(this.sourceRectangle.Height, numberOfWindowBands * this.windowBandHeight);
this.transposedFirstPassBuffer = configuration.MemoryAllocator.Allocate2D <Vector4>(
this.workerHeight,
destWidth,
preferContiguosImageBuffers: true,
options: AllocationOptions.Clean);
this.tempRowBuffer = configuration.MemoryAllocator.Allocate <Vector4>(this.sourceRectangle.Width);
this.tempColumnBuffer = configuration.MemoryAllocator.Allocate <Vector4>(destWidth);
this.currentWindow = new RowInterval(0, this.workerHeight);
}
public ResizeWorker(
Configuration configuration,
BufferArea <TPixel> source,
PixelConversionModifiers conversionModifiers,
ResizeKernelMap horizontalKernelMap,
ResizeKernelMap verticalKernelMap,
int destWidth,
Rectangle targetWorkingRect,
Point targetOrigin)
{
this.configuration = configuration;
this.source = source;
this.sourceRectangle = source.Rectangle;
this.conversionModifiers = conversionModifiers;
this.horizontalKernelMap = horizontalKernelMap;
this.verticalKernelMap = verticalKernelMap;
this.destWidth = destWidth;
this.targetWorkingRect = targetWorkingRect;
this.targetOrigin = targetOrigin;
this.windowBandHeight = verticalKernelMap.MaxDiameter;
int numberOfWindowBands = ResizeHelper.CalculateResizeWorkerHeightInWindowBands(
this.windowBandHeight,
destWidth,
configuration.WorkingBufferSizeHintInBytes);
this.workerHeight = Math.Min(this.sourceRectangle.Height, numberOfWindowBands * this.windowBandHeight);
this.transposedFirstPassBuffer = configuration.MemoryAllocator.Allocate2D <Vector4>(
this.workerHeight,
destWidth,
AllocationOptions.Clean);
this.tempRowBuffer = configuration.MemoryAllocator.Allocate <Vector4>(this.sourceRectangle.Width);
this.tempColumnBuffer = configuration.MemoryAllocator.Allocate <Vector4>(destWidth);
this.currentWindow = new RowInterval(0, this.workerHeight);
}