public static void TransformImage(DisplayData currentPage, IntPtr outputRGBBuffer)
{
try
{
if (outputRGBBuffer == IntPtr.Zero)
{
return;
}
PresentationState pstate = currentPage.PState;
int renderWidth = pstate.RenderWidth;
int renderHeight = pstate.RenderHeight;
int samplesPerPixel = currentPage.SamplesPerPixel;
int width = currentPage.Width;
int height = currentPage.Height;
int pixelBits = currentPage.PixelBits;
int pixelRepresentation = currentPage.PixelRepresentation;
double rescaleSlope = currentPage.RescaleSlope;
double rescaleIntercept = currentPage.RescaleIntercept;
//if a image is a original PET image, its SopClassUID is 1.2.840.10008.5.1.4.1.1.128, So we use bIsOriPT to describe
//if a image, its Modality is PT and it's not a RGB image, we use bIsNotRGBPT to describe
bool bIsOriPT = (currentPage.SOPClassUID == "1.2.840.10008.5.1.4.1.1.128");
bool bIsNotRGBPT = (currentPage.Modality == Modality.PT && currentPage.SamplesPerPixel == 1);
bool bIsPseudoColor = false;
if (bIsOriPT)
{
bIsPseudoColor = !(PresentationState.PalettesEqual(pstate.Palette, PresentationState.DefaultPalette) ||
PresentationState.PalettesEqual(pstate.Palette, PresentationState.GetInversePalette(PresentationState.DefaultPalette)));
}
IntPtr imageDataPtr = currentPage.CreateSafePixelDataPtr();
IntPtr imageMaskPtr = currentPage.CreateSafeMaskDataPtr();
if (imageDataPtr != IntPtr.Zero)
{
NativeMethods.ImageTransform(renderWidth, renderHeight,
0, 0, renderWidth, renderHeight, imageDataPtr, imageMaskPtr, outputRGBBuffer,
width, height, samplesPerPixel, pixelBits, pixelRepresentation, rescaleSlope, rescaleIntercept,
pstate.RotationClockwise, pstate.OffsetLeft, pstate.OffsetTop,
pstate.ScaleX, pstate.ScaleY, pstate.WindowLevel.WindowCenter,
pstate.WindowLevel.WindowWidth, pstate.EnhancePara, pstate.PaletteData,
(bIsOriPT && !bIsPseudoColor) ? !pstate.IsPaletteReversed : pstate.IsPaletteReversed,
(int)DisplayData.InterpMode.Bilinear, bIsNotRGBPT);
}
else
{
int stride = (renderWidth * 3 % 4 == 0) ? (renderWidth * 3) : ((renderWidth * 3 / 4 + 1) * 4);
NativeMethods.MemSet(outputRGBBuffer, 0, (uint)(stride * renderHeight));
}
currentPage.FreeSafePixelDataPtr();
currentPage.FreeSafeMaskDataPtr();
}
catch (Exception exp)
{
MedViewerLogger.Instance.LogDevError(MedViewerLogger.Source,
"Exception: " + exp.ToString());
}
}
public static WriteableBitmap ConvertDisplayDataToBitmap(WriteableBitmap bitmap, DisplayData currentPage)
{
try
{
if (currentPage.SkipInterpolationForColorImage && (currentPage.SamplesPerPixel == 3 || currentPage.SamplesPerPixel == 4))
{
if (currentPage.SamplesPerPixel == 3)
{
//if (bitmap.PixelWidth != currentPage.Width || bitmap.PixelHeight != currentPage.Height ||
// bitmap.Format != PixelFormats.Rgb24)
//{
bitmap = new WriteableBitmap(bitmap.PixelWidth, bitmap.PixelHeight, 96, 96, PixelFormats.Rgb24, null);
// this.ImageControl.Source = bitmap;
//}
}
else if (currentPage.SamplesPerPixel == 4)
{
//if (bitmap.PixelWidth != currentPage.Width || bitmap.PixelHeight != currentPage.Height ||
// bitmap.Format != PixelFormats.Bgra32)
//{
bitmap = new WriteableBitmap(bitmap.PixelWidth, bitmap.PixelHeight, 96, 96, PixelFormats.Bgra32, null);
// this.ImageControl.Source = bitmap;
//}
}
IntPtr imageDataPtr = currentPage.CreateSafePixelDataPtr();
bitmap.Lock();
bitmap.AddDirtyRect(new Int32Rect(0, 0, bitmap.PixelWidth, bitmap.PixelHeight));
NativeMethods.CopyMemory(bitmap.BackBuffer, imageDataPtr, bitmap.BackBufferStride * bitmap.PixelHeight);
currentPage.FreeSafePixelDataPtr();
}
else
{
//if (this.DataSource.ViewerControlSetting.UseAsynchronizedRender)
//{
// byte[] rgbPixels = new byte[bitmap.BackBufferStride * bitmap.PixelHeight];
// Task.Factory.StartNew(new Action(() => {
// unsafe
// {
// fixed (byte* imageDataPtr = rgbPixels)
// {
// TransformImage(currentPage, new IntPtr(imageDataPtr));
// bitmap.Dispatcher.BeginInvoke(new Action(() => {
// var rect = new Int32Rect(0, 0, bitmap.PixelWidth, bitmap.PixelHeight);
// bitmap.Lock();
// bitmap.AddDirtyRect(rect);
// bitmap.WritePixels(rect, rgbPixels, bitmap.BackBufferStride, 0);
// bitmap.Unlock();
// }));
// }
// }
// }));
//}
//else
//{
bitmap.Lock();
bitmap.AddDirtyRect(new Int32Rect(0, 0, bitmap.PixelWidth, bitmap.PixelHeight));
TransformImage(currentPage, bitmap.BackBuffer);
//}
}
}
catch (Exception exp)
{
MedViewerLogger.Instance.LogDevError(MedViewerLogger.Source,
"Exception: " + exp.ToString());
}
finally
{
bitmap.Unlock();
}
return(bitmap);
}