public void CopyPixels(ref WICRect prc, uint cbStride, uint cbBufferSize, byte[] pbBuffer)
{
//Log.Trace($"CopyPixels called: ({prc.X} {prc.Y} {prc.Width} {prc.Height}) Stride: {cbStride}, Size: {cbBufferSize}");
try
{
//Log.Trace($"CopyPixels rgbmap {rgbmap.Width}, {rgbmap.Height}");
CopyBGRA(ref prc, cbStride, cbBufferSize, pbBuffer);
if (prc.Y + prc.Height == rgbmap.Height) rgbmap.Dispose();
//Log.Trace("CopyPixels finished");
}
catch (Exception e)
{
Log.Error("CopyPixels failed: " + e);
throw;
}
}
public static IWICBitmap CreateBitmapFromSourceRect(this IWICImagingFactory imagingFactory, IWICBitmapSource pIBitmapSource, WICRect rect)
{
return(imagingFactory.CreateBitmapFromSourceRect(pIBitmapSource, rect.X, rect.Y, rect.Width, rect.Height));
}
unsafe void CopyBGRA(ref WICRect prc, uint cbStride, uint cbBufferSize, byte[] pbBuffer)
{
BuildRGB();
fixed (byte* p = pbBuffer)
{
var dest = p;
for (int y = prc.Y; y < prc.Y + prc.Height; y++)
{
fixed (BGRA8* line = rgbmap.Values[y])
{
var src = (byte*)(line + prc.X);
int length = prc.Width * rgbmap.BytesPerPixel;
for (; length > 0; length--, dest++, src++) *dest = *src;
}
}
}
}
