public static void AddHighQualityScaler(WicProcessingContext ctx)
{
uint width = (uint)ctx.Settings.Width, height = (uint)ctx.Settings.Height;
var fmt = ctx.Source.Format;
var interpolator = ctx.Settings.Interpolation.WeightingFunction.Support > 1d && fmt.ColorRepresentation == PixelColorRepresentation.Unspecified ? InterpolationSettings.Hermite : ctx.Settings.Interpolation;
var interpolatorx = width == ctx.Source.Width ? InterpolationSettings.NearestNeighbor : interpolator;
var interpolatory = height == ctx.Source.Height ? InterpolationSettings.NearestNeighbor : interpolator;
if (fmt.NumericRepresentation == PixelNumericRepresentation.Float)
{
var mx = ctx.AddDispose(KernelMap <float> .MakeScaleMap(ctx.Source.Width, width, fmt.ColorChannelCount, fmt.AlphaRepresentation != PixelAlphaRepresentation.None, true, interpolatorx));
var my = ctx.AddDispose(KernelMap <float> .MakeScaleMap(ctx.Source.Height, height, fmt.ChannelCount == 3 ? 4 : fmt.ColorChannelCount, fmt.AlphaRepresentation != PixelAlphaRepresentation.None, true, interpolatory));
ctx.Source = ctx.AddDispose(new ConvolutionTransform <float, float>(ctx.Source, mx, my));
}
else
{
var mx = ctx.AddDispose(KernelMap <int> .MakeScaleMap(ctx.Source.Width, width, 1, false, false, interpolatorx));
var my = ctx.AddDispose(KernelMap <int> .MakeScaleMap(ctx.Source.Height, height, 1, false, false, interpolatory));
if (fmt.NumericRepresentation == PixelNumericRepresentation.Fixed)
{
ctx.Source = ctx.AddDispose(new ConvolutionTransform <ushort, int>(ctx.Source, mx, my));
}
else
{
ctx.Source = ctx.AddDispose(new ConvolutionTransform <byte, int>(ctx.Source, mx, my));
}
}
}
public static void AddHighQualityScaler(WicProcessingContext ctx, bool hybrid = false)
{
uint width = (uint)ctx.Settings.Width, height = (uint)ctx.Settings.Height;
double rat = ctx.Settings.HybridScaleRatio;
if ((ctx.Source.Width == width && ctx.Source.Height == height) || (hybrid && rat == 1d))
{
return;
}
if (hybrid)
{
if (ctx.Source.Format.FormatGuid != Consts.GUID_WICPixelFormat32bppCMYK)
{
return;
}
width = (uint)Math.Ceiling(ctx.Source.Width / rat);
height = (uint)Math.Ceiling(ctx.Source.Height / rat);
ctx.Settings.HybridMode = HybridScaleMode.Off;
}
AddInternalFormatConverter(ctx, allow96bppFloat: true);
var fmt = ctx.Source.Format;
var interpolator = ctx.Settings.Interpolation.WeightingFunction.Support > 1d && fmt.ColorRepresentation == PixelColorRepresentation.Unspecified ? InterpolationSettings.Hermite : ctx.Settings.Interpolation;
var interpolatorx = width == ctx.Source.Width ? InterpolationSettings.NearestNeighbor : hybrid ? InterpolationSettings.Average : interpolator;
var interpolatory = height == ctx.Source.Height ? InterpolationSettings.NearestNeighbor : hybrid ? InterpolationSettings.Average : interpolator;
if (fmt.NumericRepresentation == PixelNumericRepresentation.Float)
{
var mx = ctx.AddDispose(KernelMap <float> .MakeScaleMap(ctx.Source.Width, width, fmt.ColorChannelCount, fmt.AlphaRepresentation != PixelAlphaRepresentation.None, true, interpolatorx));
var my = ctx.AddDispose(KernelMap <float> .MakeScaleMap(ctx.Source.Height, height, fmt.ChannelCount == 3 ? 4 : fmt.ColorChannelCount, fmt.AlphaRepresentation != PixelAlphaRepresentation.None, true, interpolatory));
ctx.Source = ctx.AddDispose(new ConvolutionTransform <float, float>(ctx.Source, mx, my));
}
else
{
var mx = ctx.AddDispose(KernelMap <int> .MakeScaleMap(ctx.Source.Width, width, 1, false, false, interpolatorx));
var my = ctx.AddDispose(KernelMap <int> .MakeScaleMap(ctx.Source.Height, height, 1, false, false, interpolatory));
if (fmt.NumericRepresentation == PixelNumericRepresentation.Fixed)
{
ctx.Source = ctx.AddDispose(new ConvolutionTransform <ushort, int>(ctx.Source, mx, my));
}
else
{
ctx.Source = ctx.AddDispose(new ConvolutionTransform <byte, int>(ctx.Source, mx, my));
}
}
}
public WicHighQualityScaler(WicTransform prev) : base(prev)
{
uint width = (uint)Context.Settings.Width, height = (uint)Context.Settings.Height;
var interpolatorx = width == Context.Width ? InterpolationSettings.NearestNeighbor : Context.Settings.Interpolation;
var interpolatory = height == Context.Height ? InterpolationSettings.NearestNeighbor : Context.Settings.Interpolation;
var mapx = KernelMap.MakeScaleMap(Context.Width, width, interpolatorx);
var mapy = KernelMap.MakeScaleMap(Context.Height, height, interpolatory);
if (Context.Settings.BlendingMode == GammaMode.Linear)
{
Source = new WicConvolution16bpc(Source, mapx, mapy);
}
else
{
Source = new WicConvolution8bpc(Source, mapx, mapy);
}
Source.GetSize(out Context.Width, out Context.Height);
}
public WicHighQualityScaler(WicTransform prev) : base(prev)
{
uint width = (uint)Context.Settings.Width, height = (uint)Context.Settings.Height;
var interpolatorx = width == Context.Width ? InterpolationSettings.NearestNeighbor : Context.Settings.Interpolation;
var interpolatory = height == Context.Height ? InterpolationSettings.NearestNeighbor : Context.Settings.Interpolation;
var fmt = PixelFormat.Cache[Source.GetPixelFormat()];
if (fmt.NumericRepresentation == PixelNumericRepresentation.Float)
{
var mx = KernelMap <float> .MakeScaleMap(Context.Width, width, fmt.ColorChannelCount, fmt.AlphaRepresentation != PixelAlphaRepresentation.None, true, interpolatorx);
var my = KernelMap <float> .MakeScaleMap(Context.Height, height, fmt.ColorChannelCount, fmt.AlphaRepresentation != PixelAlphaRepresentation.None, true, interpolatory);
source = new WicConvolution <float, float>(Source, mx, my);
mapx = mx;
mapy = my;
}
else
{
var mx = KernelMap <int> .MakeScaleMap(Context.Width, width, 1, fmt.AlphaRepresentation == PixelAlphaRepresentation.Unassociated, false, interpolatorx);
var my = KernelMap <int> .MakeScaleMap(Context.Height, height, 1, fmt.AlphaRepresentation == PixelAlphaRepresentation.Unassociated, false, interpolatory);
if (fmt.NumericRepresentation == PixelNumericRepresentation.Fixed)
{
source = new WicConvolution <ushort, int>(Source, mx, my);
}
else
{
source = new WicConvolution <byte, int>(Source, mx, my);
}
mapx = mx;
mapy = my;
}
Source = source;
Source.GetSize(out Context.Width, out Context.Height);
}
