private unsafe void Adjust(Bitmap bitmap, double factor, ApplyToPixel applyToPixel)
{
LockedBitmap lockedBitmap = new LockedBitmap(bitmap);
Parallel.For(0, lockedBitmap.HeightInPixels, iY =>
{
byte *pixel = lockedBitmap.FirstByte + (iY * lockedBitmap.Stride);
for (int iX = 0; iX < lockedBitmap.WidthInBytes; iX += lockedBitmap.BytesPerPixel)
{
applyToPixel(pixel, factor);
pixel += lockedBitmap.BytesPerPixel;
}
});
lockedBitmap.Unlock(bitmap);
}
private unsafe byte[] GetRgbComponentNeighborhood(LockedBitmap lockedBitmapData, byte *rgbComponent)
{
byte[] neighborhood = InitializePixelNeighborhood();
byte * neighbor = rgbComponent - gap * lockedBitmapData.Stride - gapInBytes;
int offset = lockedBitmapData.Stride - size * bytesPerPixel;
for (int iY = 0; iY < size; ++iY)
{
for (int iX = 0; iX < size; ++iX)
{
neighborhood[iY * size + iX] = *neighbor;
neighbor += bytesPerPixel;
}
neighbor += offset;
}
return(neighborhood);
}
private unsafe void Adjust(Bitmap bitmap, List <Adjustment> adjustmentsPack)
{
LockedBitmap lockedBitmap = new LockedBitmap(bitmap);
Parallel.For(0, lockedBitmap.HeightInPixels, iY =>
{
byte *pixel = lockedBitmap.FirstByte + (iY * lockedBitmap.Stride);
for (int iX = 0; iX < lockedBitmap.WidthInBytes; iX += lockedBitmap.BytesPerPixel)
{
foreach (Adjustment adjustment in adjustmentsPack)
{
adjustment.adjustment(pixel, adjustment.factor);
}
pixel += lockedBitmap.BytesPerPixel;
}
});
lockedBitmap.Unlock(bitmap);
}
protected void Apply(Bitmap input, Bitmap output)
{
if (!IsValid())
{
return;
}
bytesPerPixel = Bitmap.GetPixelFormatSize(input.PixelFormat) / (int)Bits.bitsInByte;
gapInBytes = gap * bytesPerPixel;
IntermediateImage intermediate = new IntermediateImage(input, gap);
intermediate.FillIn();
LockedBitmap lockedBitmap = new LockedBitmap(output);
LockedBitmap lockedIntermediate = new LockedBitmap(intermediate.OutputImage);
ApplyFilterToBitmap(lockedIntermediate, lockedBitmap);
lockedBitmap.Unlock(output);
lockedIntermediate.Unlock(intermediate.OutputImage);
}
private unsafe void ApplyFilterToBitmap(LockedBitmap intermediate, LockedBitmap bitmap)
{
Parallel.For(0, bitmap.HeightInPixels, iY =>
{
byte *outputCurrentByte = bitmap.FirstByte + (iY * bitmap.Stride);
byte *intermediateCurrentByte = intermediate.FirstByte + ((iY + gap) * intermediate.Stride) + gapInBytes;
for (int i = 0; i < bitmap.WidthInBytes; i += bytesPerPixel)
{
for (Argb j = Argb.blue; j <= Argb.red; ++j)
{
*(outputCurrentByte + (byte)j) =
ComputeNewRgbComponentValue(GetRgbComponentNeighborhood(intermediate, intermediateCurrentByte + (byte)j));
}
*(outputCurrentByte + (byte)Argb.alfa) = *(intermediateCurrentByte + (byte)Argb.alfa);
outputCurrentByte += bytesPerPixel;
intermediateCurrentByte += bytesPerPixel;
}
});
}
private void LockArea(Rectangle sourceLockedArea, Rectangle intermediateLockedArea)
{
sourceData = new LockedBitmap(sourceImage, sourceLockedArea);
intermediateData = new LockedBitmap(intermediateImage, intermediateLockedArea);
}
