public virtual int AddBlit(JB2Blit jb2Blit)
{
if (jb2Blit.ShapeNumber >= ShapeCount)
{
throw new ArgumentException("Image bad shape");
}
int retval = _blits.Count;
_blits.Add(jb2Blit);
return retval;
}
protected override void CodeAbsoluteLocation(JB2Blit jblt, int rows, int columns)
{
if (!GotStartRecordP)
{
throw new SystemException("Image no start");
}
int left = CodeNum(1, ImageColumns, AbsLocX);
int top = CodeNum(1, ImageRows, AbsLocY);
jblt.Bottom = top - rows;
jblt.Left = left - 1;
}
internal bool Stencil(IPixelMap pm, Graphics.Rectangle rect, int subsample, double gamma)
{
Verify.SubsampleRange(subsample);
int width = Width;
int height = Height;
if (width <= 0 || height <= 0)
return false;
double gammaCorr = 1.0D;
if (gamma > 0.0D)
{
gammaCorr = gamma / Gamma;
}
if (gammaCorr < 0.10000000000000001D)
{
gammaCorr = 0.10000000000000001D;
}
else if (gammaCorr > 10D)
{
gammaCorr = 10D;
}
JB2Image fgJb2 = ForegroundJB2Image;
if (fgJb2 != null)
{
ColorPalette fgPalette = ForegroundPalette;
if (fgPalette != null)
{
List<int> components = new List<int>();
GBitmap bm = GetBitmapList(rect, subsample, 1, components);
if (fgJb2.Blits.Count != fgPalette.BlitColors?.Length)
{
pm.Attenuate(bm, 0, 0);
return false;
}
GPixmap colors =
new PixelMap().Init(1, fgPalette.PaletteColors.Length, null);
GPixelReference color = colors.CreateGPixelReference(0);
for (int i = 0; i < colors.Width; color.IncOffset())
fgPalette.IndexToColor(i++, color);
colors.ApplyGammaCorrection(gammaCorr);
List<int> compset = new List<int>();
while (components.Count > 0)
{
int lastx = 0;
int colorindex = fgPalette.BlitColors[components[0]];
GRect comprect = new GRect();
compset = new List<int>();
for (int pos = 0; pos < components.Count; )
{
int blitno = ((int)components[pos]);
JB2Blit pblit = fgJb2.Blits[blitno];
if (pblit.Left < lastx)
{
break;
}
lastx = pblit.Left;
if (fgPalette.BlitColors[blitno] == colorindex)
{
JB2Shape pshape = fgJb2.GetShape(pblit.ShapeNumber);
GRect xrect = new GRect(pblit.Left, pblit.Bottom,
pshape.Bitmap.Width, pshape.Bitmap.Height);
comprect.Recthull(comprect, xrect);
compset.Add(components[pos]);
components.RemoveAt(pos);
}
else
{
pos++;
}
}
comprect.XMin /= subsample;
comprect.YMin /= subsample;
comprect.XMax = ((comprect.XMax + subsample) - 1) / subsample;
comprect.YMax = ((comprect.YMax + subsample) - 1) / subsample;
comprect.Intersect(comprect, rect);
if (comprect.Empty)
{
continue;
}
bm = new DjvuNet.Graphics.Bitmap();
bm.Init(comprect.Height, comprect.Width, 0);
bm.Grays = 1 + (subsample * subsample);
int rxmin = comprect.XMin * subsample;
int rymin = comprect.YMin * subsample;
for (int pos = 0; pos < compset.Count; ++pos)
{
int blitno = ((int)compset[pos]);
JB2Blit pblit = fgJb2.Blits[blitno];
JB2Shape pshape = fgJb2.GetShape(pblit.ShapeNumber);
bm.Blit(
pshape.Bitmap,
pblit.Left - rxmin,
pblit.Bottom - rymin,
subsample);
}
color.SetOffset(colorindex);
pm.Blit(
bm,
comprect.XMin - rect.XMin,
comprect.YMin - rect.YMin,
color);
}
return true;
}
// Three layer model.
IInterWavePixelMap fgIWPixmap = ForegroundIWPixelMap;
if (fgIWPixmap != null)
{
GBitmap bm = GetBitmap(rect, subsample, 1, null);
if (bm != null && pm != null)
{
GPixmap fgPixmap = ForegroundPixelMap;
int w = fgPixmap.Width;
int h = fgPixmap.Height;
int red = ComputeRed(width, height, w, h);
// if((red < 1) || (red > 12))
if (red < 1 || red > 16)
return false;
//
// int supersample = (red <= subsample)
// ? 1
// : (red / subsample);
// int wantedred = supersample * subsample;
//
// if(red == wantedred)
// {
// pm.stencil(bm, fgPixmap, supersample, rect, gamma_correction);
//
// return 1;
// }
pm.Stencil(bm, fgPixmap, red, subsample, rect, gammaCorr);
return true;
}
}
}
return false;
}
protected virtual void CodeRelativeLocation(JB2Blit jblt, int rows, int columns)
{
if (!GotStartRecordP)
{
throw new SystemException("Image no start");
}
int bottom = 0;
int left = 0;
int top = 0;
int right = 0;
if (_encoding)
{
left = jblt.Left + 1;
bottom = jblt.Bottom + 1;
right = (left + columns) - 1;
top = (bottom + rows) - 1;
}
bool new_row = CodeBit((left < _lastLeft), _offsetTypeDist);
if (new_row)
{
int x_diff = GetDiff(left - _lastRowLeft, rel_loc_x_last);
int y_diff = GetDiff(top - _lastRowBottom, rel_loc_y_last);
if (!_encoding)
{
left = _lastRowLeft + x_diff;
top = _lastRowBottom + y_diff;
right = (left + columns) - 1;
bottom = (top - rows) + 1;
}
_lastLeft = _lastRowLeft = left;
_lastRight = right;
_lastBottom = _lastRowBottom = bottom;
FillShortList(bottom);
}
else
{
int x_diff = GetDiff(left - _lastRight, rel_loc_x_current);
int y_diff = GetDiff(bottom - _lastBottom, rel_loc_y_current);
if (!_encoding)
{
left = _lastRight + x_diff;
bottom = _lastBottom + y_diff;
right = (left + columns) - 1;
top = (bottom + rows) - 1;
}
_lastLeft = left;
_lastRight = right;
_lastBottom = UpdateShortList(bottom);
}
if (!_encoding)
{
jblt.Bottom = bottom - 1;
jblt.Left = left - 1;
}
}
protected virtual int CodeRecordB(int rectype, JB2Image jim, JB2Shape xjshp, JB2Blit xjblt)
{
Bitmap bm = null;
int shapeno = -1;
JB2Shape jshp = xjshp;
JB2Blit jblt = xjblt;
rectype = CodeRecordType(rectype);
switch (rectype)
{
case NewMark:
case NewMarkImageOnly:
case MatchedRefine:
case MatchedRefineImageOnly:
case NonMarkData:
{
if (jblt == null)
{
jblt = new JB2Blit();
}
// fall through
}
goto case NewMarkLibraryOnly;
case NewMarkLibraryOnly:
case MatchedRefineLibraryOnly:
{
if (!_encoding)
{
jshp = new JB2Shape().Init((rectype == NonMarkData) ? (-2) : (-1));
}
else if (jshp == null)
{
jshp = new JB2Shape();
}
bm = jshp.Bitmap;
break;
}
case MatchedCopy:
{
if (jblt == null)
{
jblt = new JB2Blit();
}
break;
}
}
bool needAddLibrary = false;
bool needAddBlit = false;
switch (rectype)
{
case StartOfData:
{
CodeImageSize(jim);
CodeEventualLosslessRefinement();
if (!_encoding)
{
InitLibrary(jim);
}
break;
}
case NewMark:
{
needAddBlit = needAddLibrary = true;
CodeAbsoluteMarkSize(bm, 4);
CodeBitmapDirectly(bm);
CodeRelativeLocation(jblt, bm.ImageHeight, bm.ImageWidth);
break;
}
case NewMarkLibraryOnly:
{
needAddLibrary = true;
CodeAbsoluteMarkSize(bm, 4);
CodeBitmapDirectly(bm);
break;
}
case NewMarkImageOnly:
{
needAddBlit = true;
CodeAbsoluteMarkSize(bm, 3);
CodeBitmapDirectly(bm);
CodeRelativeLocation(jblt, bm.ImageHeight, bm.ImageWidth);
break;
}
case MatchedRefine:
{
needAddBlit = true;
needAddLibrary = true;
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);
// verbose("2.d time="+System.currentTimeMillis()+",rectype="+rectype);
CodeBitmapByCrossCoding(bm, cbm, match);
// verbose("2.e time="+System.currentTimeMillis()+",rectype="+rectype);
CodeRelativeLocation(jblt, bm.ImageHeight, bm.ImageWidth);
break;
}
case MatchedRefineLibraryOnly:
{
needAddLibrary = true;
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);
break;
}
case MatchedRefineImageOnly:
{
needAddBlit = true;
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, match);
CodeRelativeLocation(jblt, bm.ImageHeight, bm.ImageWidth);
break;
}
case MatchedCopy:
{
int match = CodeMatchIndex(jblt.ShapeNumber, jim);
if (!_encoding)
{
jblt.ShapeNumber = Convert.ToInt32((Lib2Shape[match]));
}
bm = jim.GetShape(jblt.ShapeNumber).Bitmap;
Rectangle lmatch = (Rectangle)_libinfo[match];
jblt.Left += lmatch.Right;
jblt.Bottom += lmatch.Bottom;
CodeRelativeLocation(jblt, (1 + lmatch.Top) - lmatch.Bottom,
(1 + lmatch.Left) - lmatch.Right);
jblt.Left -= lmatch.Right;
jblt.Bottom -= lmatch.Bottom;
break;
}
case NonMarkData:
{
needAddBlit = true;
CodeAbsoluteMarkSize(bm, 3);
CodeBitmapDirectly(bm);
CodeAbsoluteLocation(jblt, bm.ImageHeight, bm.ImageWidth);
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 unknown type");
}
if (!_encoding)
{
switch (rectype)
{
case NewMark:
case NewMarkLibraryOnly:
case MatchedRefine:
case MatchedRefineLibraryOnly:
case NewMarkImageOnly:
case MatchedRefineImageOnly:
case NonMarkData:
{
if (xjshp != null)
{
jshp = jshp.Duplicate();
}
shapeno = jim.AddShape(jshp);
Shape2Lib(shapeno, MinusOneObject);
if (needAddLibrary)
{
AddLibrary(shapeno, jshp);
}
if (needAddBlit)
{
jblt.ShapeNumber = shapeno;
if (xjblt != null)
{
jblt = (JB2Blit)xjblt.Duplicate();
}
jim.AddBlit(jblt);
}
break;
}
case MatchedCopy:
{
if (xjblt != null)
{
jblt = (JB2Blit)xjblt.Duplicate();
}
jim.AddBlit(jblt);
break;
}
}
}
return rectype;
}
protected abstract void CodeAbsoluteLocation(JB2Blit jblt, int rows, int columns);
