void
JB2Dict::JB2Codec::Encode::encode_libonly_shape(
const GP<JB2Image> &gjim, int shapeno )
{
if(!gjim)
{
G_THROW( ERR_MSG("JB2Image.bad_number") );
}
JB2Image &jim=*gjim;
// Recursively encode parent shape
JB2Shape &jshp = jim.get_shape(shapeno);
if (jshp.parent>=0 && shape2lib[jshp.parent]<0)
encode_libonly_shape(gjim, jshp.parent);
// Test that library shape must be encoded
if (shape2lib[shapeno] < 0)
{
// Code library entry
int rectype=(jshp.parent >= 0)
?NEW_MARK_LIBRARY_ONLY:MATCHED_REFINE_LIBRARY_ONLY;
code_record(rectype, gjim, &jshp, 0);
// Add shape to library
add_library(shapeno, jshp);
// Check numcoder status
if (cur_ncell > CELLCHUNK)
{
rectype = REQUIRED_DICT_OR_RESET;
code_record(rectype, 0, 0);
}
}
}
void
JB2Dict::JB2Codec::Decode::code(const GP<JB2Dict> &gjim)
{
if(!gjim)
{
G_THROW( ERR_MSG("JB2Image.bad_number") );
}
JB2Dict &jim=*gjim;
// -------------------------
// THIS IS THE DECODING PART
// -------------------------
int rectype;
JB2Shape tmpshape;
do {
code_record(rectype, gjim, &tmpshape);
} while(rectype != END_OF_DATA);
if (!gotstartrecordp)
G_THROW( ERR_MSG("JB2Image.no_start") );
// cache bounding boxes
int nshapes = jim.get_shape_count();
int ishapes = jim.get_inherited_shape_count();
jim.boxes.resize(0, nshapes-ishapes-1);
for (int i = ishapes; i < nshapes; i++)
jim.boxes[i-ishapes] = libinfo[i];
// compress
jim.compress();
}
void
JB2Dict::JB2Codec::Encode::code(const GP<JB2Dict> &gjim)
{
if(!gjim)
{
G_THROW( ERR_MSG("JB2Image.bad_number") );
}
JB2Dict &jim=*gjim;
// -------------------------
// THIS IS THE ENCODING PART
// -------------------------
int firstshape = jim.get_inherited_shape_count();
int nshape = jim.get_shape_count();
init_library(jim);
// Code headers.
int rectype = REQUIRED_DICT_OR_RESET;
if (jim.get_inherited_shape_count() > 0)
code_record(rectype, gjim, 0);
rectype = START_OF_DATA;
code_record(rectype, gjim, 0);
// Code Comment.
rectype = PRESERVED_COMMENT;
if (!! jim.comment)
code_record(rectype, gjim, 0);
// Encode every shape
int shapeno;
DJVU_PROGRESS_TASK(jb2code,"jb2 encode", nshape-firstshape);
for (shapeno=firstshape; shapeno<nshape; shapeno++)
{
DJVU_PROGRESS_RUN(jb2code, (shapeno-firstshape)|0xff);
// Code shape
JB2Shape &jshp = jim.get_shape(shapeno);
rectype=(jshp.parent >= 0)
?MATCHED_REFINE_LIBRARY_ONLY:NEW_MARK_LIBRARY_ONLY;
code_record(rectype, gjim, &jshp);
add_library(shapeno, jshp);
// Check numcoder status
if (cur_ncell > CELLCHUNK)
{
rectype = REQUIRED_DICT_OR_RESET;
code_record(rectype, 0, 0);
}
}
// Code end of data record
rectype = END_OF_DATA;
code_record(rectype, gjim, 0);
gzp=0;
}
void
JB2Dict::JB2Codec::Decode::code(const GP<JB2Dict> &gjim)
{
if(!gjim)
{
G_THROW( ERR_MSG("JB2Image.bad_number") );
}
JB2Dict &jim=*gjim;
// -------------------------
// THIS IS THE DECODING PART
// -------------------------
int rectype;
JB2Shape tmpshape;
do
{
code_record(rectype, gjim, &tmpshape);
}
while(rectype != END_OF_DATA);
if (!gotstartrecordp)
G_THROW( ERR_MSG("JB2Image.no_start") );
jim.compress();
}
void
JB2Dict::JB2Codec::Encode::code(const GP<JB2Image> &gjim)
{
if(!gjim)
{
G_THROW( ERR_MSG("JB2Image.bad_number") );
}
JB2Image &jim=*gjim;
// -------------------------
// THIS IS THE ENCODING PART
// -------------------------
int i;
init_library(jim);
int firstshape = jim.get_inherited_shape_count();
int nshape = jim.get_shape_count();
int nblit = jim.get_blit_count();
// Initialize shape2lib
shape2lib.resize(0,nshape-1);
for (i=firstshape; i<nshape; i++)
shape2lib[i] = -1;
// Determine shapes that go into library (shapeno>=firstshape)
// shape2lib is -2 if used by one blit
// shape2lib is -3 if used by more than one blit
// shape2lib is -4 if used as a parent
for (i=0; i<nblit; i++)
{
JB2Blit *jblt = jim.get_blit(i);
int shapeno = jblt->shapeno;
if (shapeno < firstshape)
continue;
if (shape2lib[shapeno] >= -2)
shape2lib[shapeno] -= 1;
shapeno = jim.get_shape(shapeno).parent;
while (shapeno>=firstshape && shape2lib[shapeno]>=-3)
{
shape2lib[shapeno] = -4;
shapeno = jim.get_shape(shapeno).parent;
}
}
// Code headers.
int rectype = REQUIRED_DICT_OR_RESET;
if (jim.get_inherited_shape_count() > 0)
code_record(rectype, gjim, 0, 0);
rectype = START_OF_DATA;
code_record(rectype, gjim, 0, 0);
// Code Comment.
rectype = PRESERVED_COMMENT;
if (!! jim.comment)
code_record(rectype, gjim, 0, 0);
// Encode every blit
int blitno;
DJVU_PROGRESS_TASK(jb2code,"jb2 encode", nblit);
for (blitno=0; blitno<nblit; blitno++)
{
DJVU_PROGRESS_RUN(jb2code, blitno|0xff);
JB2Blit *jblt = jim.get_blit(blitno);
int shapeno = jblt->shapeno;
JB2Shape &jshp = jim.get_shape(shapeno);
// Tests if shape exists in library
if (shape2lib[shapeno] >= 0)
{
int rectype = MATCHED_COPY;
code_record(rectype, gjim, 0, jblt);
}
// Avoid coding null shapes/blits
else if (jshp.bits)
{
// Make sure all parents have been coded
if (jshp.parent>=0 && shape2lib[jshp.parent]<0)
encode_libonly_shape(gjim, jshp.parent);
// Allocate library entry when needed
#define LIBRARY_CONTAINS_ALL
int libraryp = 0;
#ifdef LIBRARY_CONTAINS_MARKS // baseline
if (jshp.parent >= -1)
libraryp = 1;
#endif
#ifdef LIBRARY_CONTAINS_SHARED // worse
if (shape2lib[shapeno] <= -3)
libraryp = 1;
#endif
#ifdef LIBRARY_CONTAINS_ALL // better
libraryp = 1;
#endif
// Test all blit cases
if (jshp.parent<-1 && !libraryp)
{
int rectype = NON_MARK_DATA;
code_record(rectype, gjim, &jshp, jblt);
}
else if (jshp.parent < 0)
{
int rectype = (libraryp ? NEW_MARK : NEW_MARK_IMAGE_ONLY);
code_record(rectype, gjim, &jshp, jblt);
}
else
{
int rectype = (libraryp ? MATCHED_REFINE : MATCHED_REFINE_IMAGE_ONLY);
code_record(rectype, gjim, &jshp, jblt);
}
// Add shape to library
if (libraryp)
add_library(shapeno, jshp);
}
// Check numcoder status
if (cur_ncell > CELLCHUNK)
{
rectype = REQUIRED_DICT_OR_RESET;
code_record(rectype, 0, 0);
}
}
// Code end of data record
rectype = END_OF_DATA;
code_record(rectype, gjim, 0, 0);
gzp=0;
}
