protected void MergeIFD(IFD other_tiff)
{
if (other_tiff?.subIFD.Count == 0)
{
return;
}
foreach (IFD i in other_tiff.subIFD)
{
subIFD.Add(i);
}
foreach (KeyValuePair <TagType, Tag> i in other_tiff.tags)
{
tags.Add(i.Key, i.Value);;
}
}
protected void Parse(ImageBinaryReader fileStream)
{
tagNumber = fileStream.ReadUInt16();
Debug.Assert(tagNumber < UInt16.MaxValue);
for (int i = 0; i < tagNumber; i++)
{
Tag temp = new Tag(fileStream, RelativeOffset);
if (!tags.ContainsKey(temp.TagId))
{
tags.Add(temp.TagId, temp);
}
}
NextOffset = fileStream.ReadUInt32();
foreach (Tag tag in tags.Values)
{
if (tag.TagId != TagType.MAKERNOTE && tag.TagId != TagType.MAKERNOTE_ALT)
{
tag.ReadData(fileStream);
}
}
foreach (Tag tag in tags.Values)
{
try
{
//Special tag
switch (tag.TagId)
{
case TagType.DNGPRIVATEDATA:
IFD maker_ifd = ParseDngPrivateData(tag);
if (maker_ifd != null)
{
subIFD.Add(maker_ifd);
tag.data = null;
}
break;
case TagType.MAKERNOTE:
case TagType.MAKERNOTE_ALT:
case (TagType)288:
Makernote makernote = ParseMakerNote(fileStream, tag, endian);
if (makernote != null)
{
subIFD.Add(makernote);
}
break;
case TagType.OLYMPUSIMAGEPROCESSING:
case TagType.FUJI_RAW_IFD:
case TagType.NIKONTHUMB:
case TagType.SUBIFDS:
case TagType.EXIFIFDPOINTER:
for (Int32 k = 0; k < tag.dataCount; k++)
{
subIFD.Add(new IFD(IFDType.Plain, fileStream, tag.GetUInt(k), endian, Depth, RelativeOffset));
}
break;
case TagType.GPSINFOIFDPOINTER:
subIFD.Add(new IFD(IFDType.GPS, fileStream, tag.GetUInt(0), endian, Depth));
break;
}
}
catch (Exception) { }
}
}