internal JB2Image ReadCompressedImage()
{
using (IDjvuReader reader = Reader.CloneReaderToMemory(DataOffset, Length))
{
JB2Image image = new JB2Image();
JB2.JB2Dictionary includedDictionary = null;
if (Parent is DjvuChunk djvuChunk)
{
IReadOnlyList <InclChunk> includes = djvuChunk.IncludedItems;
if (includes?.Count > 0)
{
var includeIDs = includes
.Where <InclChunk>(x => x.ChunkType == ChunkType.Incl);
var root = Document.RootForm as DjvmChunk;
DjbzChunk djbzItem = null;
foreach (InclChunk iChunk in includeIDs)
{
DirmComponent component = root?.Dirm.Components
.Where <DirmComponent>(x => x.ID == iChunk.IncludeID).FirstOrDefault();
var includeForm = root.Includes
.FirstOrDefault <IDjviChunk>(x => x.DataOffset == (component.Offset + 12));
djbzItem = includeForm?.Children
.FirstOrDefault(x => x.ChunkType == ChunkType.Djbz) as DjbzChunk;
if (djbzItem != null)
{
break;
}
}
includedDictionary = djbzItem?.ShapeDictionary;
}
}
image.Decode(reader, includedDictionary);
return(image);
}
}
/// <summary>
/// Builds the appropriate chunk for the ID
/// </summary>
/// <returns></returns>
public static IFFChunk BuildIFFChunk(DjvuReader reader, DjvuDocument rootDocument, IFFChunk parent, ChunkTypes chunkType)
{
IFFChunk result = null;
if (chunkType == ChunkTypes.Form)
{
result = new FormChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Form_Djvm)
{
result = new DjvmChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Form_Djvu)
{
result = new DjvuChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Form_Djvi)
{
result = new DjviChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Form_Thum)
{
result = new ThumChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Dirm)
{
result = new DirmChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Navm)
{
result = new NavmChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Anta)
{
result = new AntaChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Antz)
{
result = new AntzChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Txta)
{
result = new TxtaChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Txtz)
{
result = new TxtzChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Djbz)
{
result = new DjbzChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Sjbz)
{
result = new SjbzChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.FG44)
{
result = new FG44Chunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.BG44)
{
result = new BG44Chunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.TH44)
{
result = new TH44Chunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.WMRM)
{
result = new WmrmChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.FGbz)
{
result = new FGbzChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Info)
{
result = new InfoChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Incl)
{
result = new InclChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.BGjp)
{
result = new BGjpChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.FGjp)
{
result = new FGjpChunk(reader, parent, rootDocument);
}
else if (chunkType == ChunkTypes.Smmr)
{
result = new SmmrChunk(reader, parent, rootDocument);
}
else
{
result = new UnknownChunk(reader, parent, rootDocument);
}
//Console.WriteLine(result);
return(result);
}