public byte[] ToRGB(byte[] src, ColorSpaces color, int width, int height)
{
byte[] dst = new byte[123];
return(dst);
}
public static int GetHeightSubsample(this ColorSpaces colorSpace)
{
if (!colorSpace.IsRealPlanar())
{
return(1);
}
return(colorSpace.HasFlag(ColorSpaces.CS_Sub_Height_1) ? 1 :
(colorSpace.HasFlag(ColorSpaces.CS_Sub_Height_4) ? 4 : 2));
}
public static YUVPlanes[] GetPlanes(ColorSpaces colorSpace)
{
if (colorSpace.HasFlag(ColorSpaces.CS_INTERLEAVED))
{
return new[] { default(YUVPlanes) }
}
;
return(new[] { YUVPlanes.PLANAR_Y, YUVPlanes.PLANAR_U, YUVPlanes.PLANAR_V });
}
public static dynamic GetConvertFunction(ColorSpaces colorSpace)
{
return(colorSpace switch
{
ColorSpaces.CS_BGR24 => "ConvertToRGB24",
ColorSpaces.CS_BGR48 => "ConvertToRGB48",
var p when p.HasFlag(ColorSpaces.CS_GENERIC_YUV420) => "ConvertToYUV420",
var p when p.HasFlag(ColorSpaces.CS_GENERIC_YUV422) => "ConvertToYUV422",
var p when p.HasFlag(ColorSpaces.CS_GENERIC_YUV444) => "ConvertToYUV444",
_ => throw new ArgumentException("Unsupported color space with specified matrix")
});
/// <summary>
/// Check whether a resource name is already used in the context of this resource dictionary.
/// PDF4NET uses GUIDs as resource names, but I think this weapon is to heavy.
/// </summary>
internal bool ExistsResourceNames(string name)
{
// TODO: more precise: is this page imported and is PageOptions != Replace
// BUG:
//if (!Owner.IsImported)
// return false;
// Collect all resouce names of all imported resources.
if (_importedResourceNames == null)
{
_importedResourceNames = new Dictionary <string, object>();
if (Elements[Keys.Font] != null)
{
Fonts.CollectResourceNames(_importedResourceNames);
}
if (Elements[Keys.XObject] != null)
{
XObjects.CollectResourceNames(_importedResourceNames);
}
if (Elements[Keys.ExtGState] != null)
{
ExtGStates.CollectResourceNames(_importedResourceNames);
}
if (Elements[Keys.ColorSpace] != null)
{
ColorSpaces.CollectResourceNames(_importedResourceNames);
}
if (Elements[Keys.Pattern] != null)
{
Patterns.CollectResourceNames(_importedResourceNames);
}
if (Elements[Keys.Shading] != null)
{
Shadings.CollectResourceNames(_importedResourceNames);
}
if (Elements[Keys.Properties] != null)
{
Properties.CollectResourceNames(_importedResourceNames);
}
}
return(_importedResourceNames.ContainsKey(name));
// This is superfluous because PDFsharp resource names cannot be double.
// importedResourceNames.Add(name, null);
}
private int[] GetHistogram(IEnumerable <VideoFrame> frames, VideoFrame maskFrame, int pixelSize, int channel, YUVPlanes plane, ColorSpaces pixelType, int bits, bool limitedRange)
{
var hist = new int[1 << bits];
var chroma = plane == YUVPlanes.PLANAR_U || plane == YUVPlanes.PLANAR_V;
var widthMult = chroma ? pixelType.GetWidthSubsample() : 1;
var heightMult = chroma ? pixelType.GetHeightSubsample() : 1;
var maskPitch = maskFrame?.GetPitch() * heightMult ?? 0;
var maskPtr = maskFrame?.GetReadPtr() + channel ?? IntPtr.Zero;
foreach (var frame in frames)
{
NativeUtils.FillHistogram(hist,
frame.GetRowSize(plane), frame.GetHeight(plane), channel,
frame.GetReadPtr(plane), frame.GetPitch(plane), pixelSize,
maskPtr, maskPitch, widthMult);
}
if (limitedRange)
{
var min = GetLowColor(bits);
for (var color = 0; color < min; color++)
{
hist[min] += hist[color];
hist[color] = 0;
}
var max = GetHighColor(bits, plane);
for (var color = max + 1; color < 1 << bits; color++)
{
hist[max] += hist[color];
hist[color] = 0;
}
}
return(GetUniHistogram(hist));
}
public static ColorSpaces ChangeBitDepth(this ColorSpaces colorSpace, int depth)
{
var en = bitDepths.First(p => p.Value == depth).Key;
return((colorSpace & ~ColorSpaces.CS_Sample_Bits_Mask) | en);
}
public static int GetBitDepth(this ColorSpaces colorSpace)
{
return(bitDepths.First(p => colorSpace.HasFlag(p.Key)).Value);
}
public static int GetHeightSubsample(this ColorSpaces colorSpace)
{
return(colorSpace.HasFlag(ColorSpaces.CS_Sub_Height_1) ? 1 :
(colorSpace.HasFlag(ColorSpaces.CS_Sub_Height_4) ? 4 : 2));
}
public static int GetWidthSubsample(this ColorSpaces colorSpace)
{
return(colorSpace.HasFlag(ColorSpaces.CS_Sub_Width_1) ? 1 :
(colorSpace.HasFlag(ColorSpaces.CS_Sub_Width_4) ? 4 : 2));
}
public static bool WithoutSubSample(this ColorSpaces colorSpace)
{
return(colorSpace.GetSubSample() == NO_SUB_SAMPLE);
}
public static Size GetSubSample(this ColorSpaces colorSpace)
{
return(new Size(colorSpace.GetWidthSubsample(), colorSpace.GetHeightSubsample()));
}
public static bool IsRealPlanar(this ColorSpaces pixelType)
{
return(pixelType.HasFlag(ColorSpaces.CS_PLANAR) && !pixelType.HasFlag(ColorSpaces.CS_INTERLEAVED)); //Y8 is interleaved
}
public static Color ToColor(double x, double y, double z, ColorSpaces colorSpace)
{
switch (colorSpace) {
case ColorSpaces.HSV:
return HsvToRgb(x,y,z);
case ColorSpaces.HSL:
return HslToRgb(x,y,z);
case ColorSpaces.XYZ:
return XyzToRgb(x,y,z);
case ColorSpaces.Lab:
return LabToRgb(z,x/360.0,y);
default:
return System.Drawing.Color.White;
}
}
