private IccProfileHeader ReadHeader(IccDataReader reader)
{
reader.SetIndex(0);
return(new IccProfileHeader
{
Size = reader.ReadUInt32(),
CmmType = reader.ReadAsciiString(4),
Version = reader.ReadVersionNumber(),
Class = (IccProfileClass)reader.ReadUInt32(),
DataColorSpace = (IccColorSpaceType)reader.ReadUInt32(),
ProfileConnectionSpace = (IccColorSpaceType)reader.ReadUInt32(),
CreationDate = reader.ReadDateTime(),
FileSignature = reader.ReadAsciiString(4),
PrimaryPlatformSignature = (IccPrimaryPlatformType)reader.ReadUInt32(),
Flags = (IccProfileFlag)reader.ReadInt32(),
DeviceManufacturer = reader.ReadUInt32(),
DeviceModel = reader.ReadUInt32(),
DeviceAttributes = (IccDeviceAttribute)reader.ReadInt64(),
RenderingIntent = (IccRenderingIntent)reader.ReadUInt32(),
PcsIlluminant = reader.ReadXyzNumber(),
CreatorSignature = reader.ReadAsciiString(4),
Id = reader.ReadProfileId(),
});
}
private IccTagTableEntry[] ReadTagTable(IccDataReader reader)
{
reader.SetIndex(128); // An ICC header is 128 bytes long
uint tagCount = reader.ReadUInt32();
// Prevent creating huge arrays because of corrupt profiles.
// A normal profile usually has 5-15 entries
if (tagCount > 100)
{
return(Array.Empty <IccTagTableEntry>());
}
var table = new List <IccTagTableEntry>((int)tagCount);
for (int i = 0; i < tagCount; i++)
{
uint tagSignature = reader.ReadUInt32();
uint tagOffset = reader.ReadUInt32();
uint tagSize = reader.ReadUInt32();
// Exclude entries that have nonsense values and could cause exceptions further on
if (tagOffset < reader.DataLength && tagSize < reader.DataLength - 128)
{
table.Add(new IccTagTableEntry((IccProfileTag)tagSignature, tagOffset, tagSize));
}
}
return(table.ToArray());
}