public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value is Action <string, byte[]> action && parameter is string filter)
{
return(new TransientCommand(() =>
{
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.Filter = filter;
if (dlg.ShowDialog() == true)
{
bool failed = false;
try
{
var bytes = File.ReadAllBytes(dlg.FileName);
if (Path.GetExtension(dlg.FileName)?.ToLower() == ".png")
{
BitmapImage biImg = new BitmapImage();
using MemoryStream ms = new MemoryStream(bytes);
biImg.BeginInit();
biImg.StreamSource = ms;
biImg.EndInit();
if (biImg.PixelWidth != 512 || biImg.PixelHeight != 512)
{
throw new InvalidOperationException($"Wrong LUT size {biImg.PixelWidth}x{biImg.PixelHeight}");
}
}
else
{
var data = CubeParser.Read(bytes);
if (data == null)
{
throw new InvalidOperationException("Bad cube format");
}
}
action(dlg.FileName, bytes);
}
catch (Exception e)
{
Log.Warning(e, $"Failed to open image file");
failed = true;
}
if (failed)
{
action(dlg.FileName, null);
}
}
}));
}
return(null);
}
public static IDirectXFilterStage Create(DirectXContext dx, byte[] buffer, SingleFrameType type, double amount)
{
if (type == SingleFrameType.Cube)
{
var cube = CubeParser.Read(buffer);
if (cube != null)
{
var texture1 = cube.Is3D ? null : CreateTexture1D(dx, cube);
var texture3 = cube.Is3D ? CreateTexture3D(dx, cube) : null;
return(new DirectXFilterStageLUT(dx, texture1, texture3, amount, cube.Size, CreateConfig(cube.Is3D), cube.DomainMin, cube.DomainMax));
}
}
else if (type == SingleFrameType.Png)
{
var texture = CreateTexture3D(dx, buffer);
return(new DirectXFilterStageLUT(dx, null, texture, amount, 64, CreateConfig(true), new Vector3(0, 0, 0), new Vector3(1, 1, 1)));
}
return(null);
}