public override void Decode(BinaryReader gbs, JB2Dictionary zdict)
{
Init();
JB2Decoder codec = new JB2Decoder();
codec.Init(gbs, zdict);
codec.Code(this);
}
private JB2.JB2Dictionary DecodeShapeDictionary()
{
using (DjvuReader reader = Reader.CloneReader(_dataLocation, Length))
{
JB2.JB2Dictionary dictionary = new JB2Dictionary();
dictionary.Decode(reader);
return(dictionary);
}
}
internal JB2.JB2Dictionary DecodeShapeDictionary()
{
using (IDjvuReader reader = Reader.CloneReaderToMemory(DataOffset, Length))
{
JB2.JB2Dictionary dictionary = new JB2Dictionary();
dictionary.Decode(reader);
return(dictionary);
}
}
public virtual void Code(JB2Dictionary jim)
{
int rectype = StartOfData;
do
{
//Console.WriteLine("Jb2D c(d) rectype in: " + rectype);
rectype = CodeRecordA(rectype, jim, null);
//Console.WriteLine("Jb2D c(d) rectype out: " + rectype);
} while (rectype != EndOfData);
if (!GotStartRecordP)
{
throw new SystemException("Image no start");
}
}
protected virtual void InitLibrary(JB2Dictionary jim)
{
int nshape = jim.InheritedShapes;
shape2lib_Renamed_Field.Clear();
Lib2Shape.Clear();
_libinfo.Clear();
for (int i = 0; i < nshape; i++)
{
int x = i;
shape2lib_Renamed_Field.Add(x);
Lib2Shape.Add(x);
JB2Shape jshp = jim.GetShape(i);
//final Rectangle r = new Rectangle();
//libinfo.addElement(r);
//jshp.getGBitmap().compute_bounding_box(r);
_libinfo.Add(jshp.Bitmap.ComputeBoundingBox());
}
}
protected virtual int CodeRecordA(int rectype, JB2Dictionary jim, JB2Shape xjshp)
{
Bitmap bm = null;
int shapeno = -1;
rectype = CodeRecordType(rectype);
JB2Shape jshp = xjshp;
switch (rectype)
{
case NewMarkLibraryOnly:
case MatchedRefineLibraryOnly:
{
if (!_encoding)
{
jshp = new JB2Shape().Init(-1);
}
else if (jshp == null)
{
jshp = new JB2Shape();
}
bm = jshp.Bitmap;
break;
}
}
switch (rectype)
{
case StartOfData:
{
CodeImageSize(jim);
CodeEventualLosslessRefinement();
if (!_encoding)
{
InitLibrary(jim);
}
break;
}
case NewMarkLibraryOnly:
{
CodeAbsoluteMarkSize(bm, 4);
CodeBitmapDirectly(bm);
break;
}
case MatchedRefineLibraryOnly:
{
int match = CodeMatchIndex(jshp.Parent, jim);
if (!_encoding)
{
jshp.Parent = Convert.ToInt32((Lib2Shape[match]));
}
Bitmap cbm = jim.GetShape(jshp.Parent).Bitmap;
Rectangle lmatch = (Rectangle)_libinfo[match];
CodeRelativeMarkSize(bm, (1 + lmatch.Left) - lmatch.Right, (1 + lmatch.Top) - lmatch.Bottom, 4);
CodeBitmapByCrossCoding(bm, cbm, jshp.Parent);
break;
}
case PreservedComment:
{
jim.Comment = CodeComment(jim.Comment);
break;
}
case RequiredDictOrReset:
{
if (!GotStartRecordP)
{
CodeInheritedShapeCount(jim);
}
else
{
ResetNumcoder();
}
break;
}
case EndOfData:
break;
default:
throw new ArgumentException("Image bad type");
}
if (!_encoding)
{
switch (rectype)
{
case NewMarkLibraryOnly:
case MatchedRefineLibraryOnly:
{
if (xjshp != null)
{
jshp = jshp.Duplicate();
}
shapeno = jim.AddShape(jshp);
AddLibrary(shapeno, jshp);
break;
}
}
}
return rectype;
}
protected abstract int CodeMatchIndex(int index, JB2Dictionary jim);
protected abstract void CodeInheritedShapeCount(JB2Dictionary jim);
protected virtual void CodeImageSize(JB2Dictionary ignored)
{
_lastLeft = 1;
_lastRowBottom = 0;
_lastRowLeft = _lastRight = 0;
FillShortList(_lastRowBottom);
GotStartRecordP = true;
}
public virtual void Init(BinaryReader gbs, JB2Dictionary zdict)
{
this._zdict = zdict;
_zp = new ZPCodec(gbs.BaseStream);
}
protected override int CodeMatchIndex(int index, JB2Dictionary ignored)
{
//Console.WriteLine("Jb2D cmi(i d) index: " + index);
//Console.WriteLine("Jb2D cmi(i d) lib2shape.Count: " + lib2shape.Count);
//Console.WriteLine("Jb2D cmi(i d) dist_match_index: " + dist_match_index.Value);
int result = CodeNum(0, Lib2Shape.Count - 1, DistMatchIndex);
//Console.WriteLine("Jb2D cmi(i d) result: " + result);
return result;
}
protected override void CodeInheritedShapeCount(JB2Dictionary jim)
{
//Console.WriteLine("Jb2D cisc(d) inherited_shape_count_dist: " + inherited_shape_count_dist.Value);
int size = CodeNum(0, Bigpositive, InheritedShapeCountDist);
//Console.WriteLine("Jb2D cisc(d) size: " + size);
//Console.WriteLine("Jb2D cisc(d) inherited_shape_count_dist: " + inherited_shape_count_dist.Value);
JB2Dictionary dict = jim.InheritedDictionary;
//Console.WriteLine("Jb2D cisc(d) dictnull: " + dict == null);
//Console.WriteLine("Jb2D cisc(d) zdictnull: " + zdict == null);
if ((dict == null) && (size > 0))
{
if (_zdict != null)
{
dict = _zdict;
jim.InheritedDictionary = dict;
}
else
{
throw new SystemException("Image dictionary not provided");
}
}
if ((dict != null) && (size != dict.ShapeCount))
{
throw new SystemException("Image dictionary is invalid");
}
}
protected override void CodeImageSize(JB2Dictionary jim)
{
//Console.WriteLine("Jb2D cis(d) image_size_dist: " + image_size_dist.Value);
int w = CodeNum(0, Bigpositive, ImageSizeDist);
int h = CodeNum(0, Bigpositive, ImageSizeDist);
//Console.WriteLine("Jb2D cis(d) w: " + w);
//Console.WriteLine("Jb2D cis(d) h: " + h);
//Console.WriteLine("Jb2D cis(d) image_size_dist: " + image_size_dist.Value);
if ((w != 0) || (h != 0))
{
throw new SystemException("Image bad dict 2");
}
base.CodeImageSize(jim);
}
private JB2.JB2Dictionary DecodeShapeDictionary()
{
using (DjvuReader reader = Reader.CloneReader(_dataLocation, Length))
{
JB2.JB2Dictionary dictionary = new JB2Dictionary();
dictionary.Decode(reader);
return dictionary;
}
}
