/// <summary>
/// Reads curve data
/// </summary>
/// <param name="count">Number of input channels</param>
/// <returns>The curve data</returns>
private IccTagDataEntry[] ReadCurves(int count)
{
var tdata = new IccTagDataEntry[count];
for (int i = 0; i < count; i++)
{
IccTypeSignature type = this.ReadTagDataEntryHeader();
if (type != IccTypeSignature.Curve && type != IccTypeSignature.ParametricCurve)
{
throw new InvalidIccProfileException($"Curve has to be either \"{nameof(IccTypeSignature)}.{nameof(IccTypeSignature.Curve)}\" or" +
$" \"{nameof(IccTypeSignature)}.{nameof(IccTypeSignature.ParametricCurve)}\" for LutAToB- and LutBToA-TagDataEntries");
}
if (type == IccTypeSignature.Curve)
{
tdata[i] = this.ReadCurveTagDataEntry();
}
else if (type == IccTypeSignature.ParametricCurve)
{
tdata[i] = this.ReadParametricCurveTagDataEntry();
}
this.AddPadding();
}
return(tdata);
}
/// <summary>
/// Reads a profile description
/// </summary>
/// <returns>the profile description</returns>
public IccProfileDescription ReadProfileDescription()
{
uint manufacturer = this.ReadUInt32();
uint model = this.ReadUInt32();
var attributes = (IccDeviceAttribute)this.ReadInt64();
var technologyInfo = (IccProfileTag)this.ReadUInt32();
IccMultiLocalizedUnicodeTagDataEntry manufacturerInfo = ReadText();
IccMultiLocalizedUnicodeTagDataEntry modelInfo = ReadText();
return(new IccProfileDescription(
manufacturer,
model,
attributes,
technologyInfo,
manufacturerInfo.Texts,
modelInfo.Texts));
IccMultiLocalizedUnicodeTagDataEntry ReadText()
{
IccTypeSignature type = this.ReadTagDataEntryHeader();
switch (type)
{
case IccTypeSignature.MultiLocalizedUnicode:
return(this.ReadMultiLocalizedUnicodeTagDataEntry());
case IccTypeSignature.TextDescription:
return((IccMultiLocalizedUnicodeTagDataEntry)this.ReadTextDescriptionTagDataEntry());
default:
throw new InvalidIccProfileException("Profile description can only have multi-localized Unicode or text description entries");
}
}
}
/// <summary>
/// Reads the header of a <see cref="IccTagDataEntry"/> and checks if it's the expected value
/// </summary>
/// <param name="expected">expected value to check against</param>
public void ReadCheckTagDataEntryHeader(IccTypeSignature expected)
{
IccTypeSignature type = this.ReadTagDataEntryHeader();
if (expected != (IccTypeSignature)uint.MaxValue && type != expected)
{
throw new InvalidIccProfileException($"Read signature {type} is not the expected {expected}");
}
}
/// <summary>
/// Initializes a new instance of the <see cref="IccTagDataEntry"/> class.
/// </summary>
/// <param name="signature">Type Signature</param>
/// <param name="tagSignature">Tag Signature</param>
protected IccTagDataEntry(IccTypeSignature signature, IccProfileTag tagSignature)
{
this.Signature = signature;
this.TagSignature = tagSignature;
}
/// <summary>
/// Initializes a new instance of the <see cref="IccTagDataEntry"/> class.
/// TagSignature will be <see cref="IccProfileTag.Unknown"/>
/// </summary>
/// <param name="signature">Type Signature</param>
protected IccTagDataEntry(IccTypeSignature signature)
: this(signature, IccProfileTag.Unknown)
{
}
/// <summary>
/// Writes the header of a <see cref="IccTagDataEntry"/>
/// </summary>
/// <param name="signature">The signature of the entry</param>
/// <returns>The number of bytes written</returns>
public int WriteTagDataEntryHeader(IccTypeSignature signature)
{
return(this.WriteUInt32((uint)signature)
+ this.WriteEmpty(4));
}
/// <summary>
/// Reads a tag data entry
/// </summary>
/// <param name="info">The table entry with reading information</param>
/// <returns>the tag data entry</returns>
public IccTagDataEntry ReadTagDataEntry(IccTagTableEntry info)
{
this.currentIndex = (int)info.Offset;
IccTypeSignature type = this.ReadTagDataEntryHeader();
switch (type)
{
case IccTypeSignature.Chromaticity:
return(this.ReadChromaticityTagDataEntry());
case IccTypeSignature.ColorantOrder:
return(this.ReadColorantOrderTagDataEntry());
case IccTypeSignature.ColorantTable:
return(this.ReadColorantTableTagDataEntry());
case IccTypeSignature.Curve:
return(this.ReadCurveTagDataEntry());
case IccTypeSignature.Data:
return(this.ReadDataTagDataEntry(info.DataSize));
case IccTypeSignature.DateTime:
return(this.ReadDateTimeTagDataEntry());
case IccTypeSignature.Lut16:
return(this.ReadLut16TagDataEntry());
case IccTypeSignature.Lut8:
return(this.ReadLut8TagDataEntry());
case IccTypeSignature.LutAToB:
return(this.ReadLutAtoBTagDataEntry());
case IccTypeSignature.LutBToA:
return(this.ReadLutBtoATagDataEntry());
case IccTypeSignature.Measurement:
return(this.ReadMeasurementTagDataEntry());
case IccTypeSignature.MultiLocalizedUnicode:
return(this.ReadMultiLocalizedUnicodeTagDataEntry());
case IccTypeSignature.MultiProcessElements:
return(this.ReadMultiProcessElementsTagDataEntry());
case IccTypeSignature.NamedColor2:
return(this.ReadNamedColor2TagDataEntry());
case IccTypeSignature.ParametricCurve:
return(this.ReadParametricCurveTagDataEntry());
case IccTypeSignature.ProfileSequenceDesc:
return(this.ReadProfileSequenceDescTagDataEntry());
case IccTypeSignature.ProfileSequenceIdentifier:
return(this.ReadProfileSequenceIdentifierTagDataEntry());
case IccTypeSignature.ResponseCurveSet16:
return(this.ReadResponseCurveSet16TagDataEntry());
case IccTypeSignature.S15Fixed16Array:
return(this.ReadFix16ArrayTagDataEntry(info.DataSize));
case IccTypeSignature.Signature:
return(this.ReadSignatureTagDataEntry());
case IccTypeSignature.Text:
return(this.ReadTextTagDataEntry(info.DataSize));
case IccTypeSignature.U16Fixed16Array:
return(this.ReadUFix16ArrayTagDataEntry(info.DataSize));
case IccTypeSignature.UInt16Array:
return(this.ReadUInt16ArrayTagDataEntry(info.DataSize));
case IccTypeSignature.UInt32Array:
return(this.ReadUInt32ArrayTagDataEntry(info.DataSize));
case IccTypeSignature.UInt64Array:
return(this.ReadUInt64ArrayTagDataEntry(info.DataSize));
case IccTypeSignature.UInt8Array:
return(this.ReadUInt8ArrayTagDataEntry(info.DataSize));
case IccTypeSignature.ViewingConditions:
return(this.ReadViewingConditionsTagDataEntry());
case IccTypeSignature.Xyz:
return(this.ReadXyzTagDataEntry(info.DataSize));
// V2 Types:
case IccTypeSignature.TextDescription:
return(this.ReadTextDescriptionTagDataEntry());
case IccTypeSignature.CrdInfo:
return(this.ReadCrdInfoTagDataEntry());
case IccTypeSignature.Screening:
return(this.ReadScreeningTagDataEntry());
case IccTypeSignature.UcrBg:
return(this.ReadUcrBgTagDataEntry(info.DataSize));
// Unsupported or unknown
case IccTypeSignature.DeviceSettings:
case IccTypeSignature.NamedColor:
case IccTypeSignature.Unknown:
default:
return(this.ReadUnknownTagDataEntry(info.DataSize));
}
}
