public static void SetPixels(WIC_WRITABLE dstBmp, int dstX, int dstY, PointerBitmap srcPtr)
{
if (dstX < 0)
{
throw new ArgumentOutOfRangeException(nameof(dstX));
}
if (dstY < 0)
{
throw new ArgumentOutOfRangeException(nameof(dstY));
}
if (dstX + srcPtr.Width > dstBmp.PixelWidth)
{
throw new ArgumentOutOfRangeException(nameof(srcPtr.Width));
}
if (dstY + srcPtr.Height > dstBmp.PixelHeight)
{
throw new ArgumentOutOfRangeException(nameof(srcPtr.Height));
}
if (!TryGetExactPixelFormat(dstBmp.Format, out var dstFmt))
{
throw new Diagnostics.PixelFormatNotSupportedException(dstBmp.Format, nameof(dstBmp));
}
if (srcPtr.PixelFormat == dstFmt)
{
var rect = new System.Windows.Int32Rect(dstX, dstY, dstBmp.PixelWidth, dstBmp.PixelHeight);
dstBmp.WritePixels(rect, srcPtr.Pointer, srcPtr.Info.BitmapByteSize, srcPtr.Info.StepByteSize);
return;
}
try
{
dstBmp.Lock();
var nfo = new BitmapInfo(dstBmp.PixelWidth, dstBmp.PixelHeight, dstFmt, dstBmp.BackBufferStride);
var dstPtr = new PointerBitmap(dstBmp.BackBuffer, nfo);
dstPtr.AsSpanBitmap().SetPixels(0, 0, srcPtr.AsSpanBitmap());
var w = Math.Min(dstBmp.PixelWidth, srcPtr.Width);
var h = Math.Min(dstBmp.PixelHeight, srcPtr.Height);
var drect = new System.Windows.Int32Rect(0, 0, w, h);
dstBmp.AddDirtyRect(drect);
}
finally
{
dstBmp.Unlock();
}
}
static public void Save16BitTiff(string filePath, ushort[] pixels, int width, int height)
{
var rgb16 = new System.Windows.Media.Imaging.WriteableBitmap(width, height, 96.0, 96.0,
System.Windows.Media.PixelFormats.Rgb48, null);
rgb16.WritePixels(new System.Windows.Int32Rect(0, 0, width, height), pixels, width * 2 * 3, 0);
var encoder = new System.Windows.Media.Imaging.TiffBitmapEncoder();
encoder.Frames.Add(System.Windows.Media.Imaging.BitmapFrame.Create(rgb16));
using (var stream = System.IO.File.OpenWrite(filePath)) {
encoder.Save(stream);
}
}
