Huffman encoded labels

+ more or less related fixes/refactoring

gpxsee.pro

@@ -93,8 +93,10 @@ HEADERS += src/common/config.h \
     src/map/IMG/bitstream.h \
     src/map/IMG/deltastream.h \
     src/map/IMG/gmap.h \
+    src/map/IMG/huffmanbuffer.h \
     src/map/IMG/huffmanstream.h \
     src/map/IMG/huffmantable.h \
+    src/map/IMG/huffmantext.h \
     src/map/IMG/nodfile.h \
     src/map/IMG/mapdata.h \
     src/map/IMG/rastertile.h \
@@ -258,8 +260,10 @@ SOURCES += src/main.cpp \
     src/map/IMG/bitstream.cpp \
     src/map/IMG/deltastream.cpp \
     src/map/IMG/gmap.cpp \
+    src/map/IMG/huffmanbuffer.cpp \
     src/map/IMG/huffmanstream.cpp \
     src/map/IMG/huffmantable.cpp \
+    src/map/IMG/huffmantext.cpp \
     src/map/IMG/nodfile.cpp \
     src/map/IMG/mapdata.cpp \
     src/map/IMG/rastertile.cpp \

src/common/garmin.h

@@ -15,4 +15,15 @@ inline double toWGS24(qint32 v)
 	return toWGS32(LS(v, 8));
 }
 
+inline quint8 vs(const quint8 b0)
+{
+	static const quint8 sizes[] = {4, 1, 2, 1, 3, 1, 2, 1};
+	return sizes[b0 & 0x07];
+}
+
+inline quint8 bs(const quint8 val)
+{
+	return (val + 7) >> 3;
+}
+
 #endif // GARMIN_H

src/map/IMG/gmap.cpp

@@ -81,7 +81,11 @@ bool GMAP::loadTile(const QDir &dir, bool baseMap)
 	QFileInfoList ml = dir.entryInfoList(QDir::Files);
 	for (int i = 0; i < ml.size(); i++) {
 		const QFileInfo &fi = ml.at(i);
-		tile->addFile(fi.absoluteFilePath(), tileType(fi.suffix()));
+		SubFile::Type tt = tileType(fi.suffix());
+		if (VectorTile::isTileFile(tt)) {
+			_files.append(new QString(fi.absoluteFilePath()));
+			tile->addFile(_files.last(), tt);
+		}
 	}
 
 	if (!tile->init()) {
@@ -131,8 +135,10 @@ GMAP::GMAP(const QString &fileName) : _fileName(fileName)
 			  fi.absoluteFilePath() == baseMap.absoluteFilePath());
 	}
 
-	if (baseDir.exists(typFilePath))
+	if (baseDir.exists(typFilePath)) {
-		_typ = new SubFile(baseDir.filePath(typFilePath));
+		_files.append(new QString(baseDir.filePath(typFilePath)));
+		_typ = new SubFile(_files.last());
+	}
 
 	if (!_tileTree.Count())
 		_errorString = "No usable map tile found";
@@ -140,6 +146,11 @@ GMAP::GMAP(const QString &fileName) : _fileName(fileName)
 		_valid = true;
 }
 
+GMAP::~GMAP()
+{
+	qDeleteAll(_files);
+}
+
 bool GMAP::isGMAP(const QString &path)
 {
 	QFile file(path);

src/map/IMG/gmap.h

@@ -10,6 +10,7 @@ class GMAP : public MapData
 {
 public:
 	GMAP(const QString &fileName);
+	~GMAP();
 
 	QString fileName() const {return _fileName;}
 
@@ -25,6 +26,7 @@ private:
 	bool loadTile(const QDir &dir, bool baseMap);
 
 	QString _fileName;
+	QList<const QString*> _files;
 };
 
 #endif // GMAP_H

src/map/IMG/huffmanbuffer.cpp

@@ -0,0 +1,24 @@
+#include "rgnfile.h"
+#include "huffmanbuffer.h"
+
+bool HuffmanBuffer::load(const RGNFile *rgn, SubFile::Handle &rgnHdl)
+{
+	quint32 recordSize, recordOffset = rgn->dictOffset();
+
+	for (int i = 0; i <= _id; i++) {
+		if (!rgn->seek(rgnHdl, recordOffset))
+			return false;
+		if (!rgn->readVUInt32(rgnHdl, recordSize))
+			return false;
+		recordOffset = rgn->pos(rgnHdl) + recordSize;
+		if (recordOffset > rgn->dictOffset() + rgn->dictSize())
+			return false;
+	};
+
+	resize(recordSize);
+	for (int i = 0; i < QByteArray::size(); i++)
+		if (!rgn->readUInt8(rgnHdl, *((quint8*)(data() + i))))
+			return false;
+
+	return true;
+}

src/map/IMG/huffmanbuffer.h

@@ -0,0 +1,21 @@
+#ifndef HUFFMANBUFFER_H
+#define HUFFMANBUFFER_H
+
+#include <QByteArray>
+#include "subfile.h"
+
+class RGNFile;
+
+class HuffmanBuffer : public QByteArray
+{
+public:
+	HuffmanBuffer(quint8 id) : _id(id) {}
+
+	quint8 id() const {return _id;}
+	bool load(const RGNFile *rgn, SubFile::Handle &rgnHdl);
+
+private:
+	quint8 _id;
+};
+
+#endif // HUFFMANBUFFER_H

src/map/IMG/huffmantable.cpp

@@ -1,17 +1,7 @@
+#include "common/garmin.h"
 #include "huffmantable.h"
 
 
-static quint8 vs(const quint8 b0)
-{
-	static const quint8 sizes[] = {4, 1, 2, 1, 3, 1, 2, 1};
-	return sizes[b0 & 0x07];
-}
-
-static inline quint8 bs(const quint8 val)
-{
-	return (val + 7) >> 3;
-}
-
 static inline quint32 readVUint32(const quint8 *buffer, quint32 bytes)
 {
 	quint32 val = 0;
@@ -22,10 +12,9 @@ static inline quint32 readVUint32(const quint8 *buffer, quint32 bytes)
 	return val;
 }
 
-bool HuffmanTable::load(const SubFile &file, SubFile::Handle &hdl,
+bool HuffmanTable::load(const RGNFile *rgn, SubFile::Handle &rgnHdl)
-  quint32 offset, quint32 size, quint32 id)
 {
-	if (!getBuffer(file, hdl, offset, size, id))
+	if (!_buffer.load(rgn, rgnHdl))
 		return false;
 
 	_s0 = (quint8)_buffer.at(0) & 0x0F;
@@ -42,31 +31,6 @@ bool HuffmanTable::load(const SubFile &file, SubFile::Handle &hdl,
 	_s10 = _s14 + _s1c * _s1d;
 	_s18 = _s10 + (_s1 << _s0);
 
-	_id = id;
-
-	return true;
-}
-
-bool HuffmanTable::getBuffer(const SubFile &file, SubFile::Handle &hdl,
-  quint32 offset, quint32 size, quint8 id)
-{
-	quint32 recordSize, recordOffset = offset;
-
-	for (int i = 0; i <= id; i++) {
-		if (!file.seek(hdl, recordOffset))
-			return false;
-		if (!file.readVUInt32(hdl, recordSize))
-			return false;
-		recordOffset = file.pos(hdl) + recordSize;
-		if (recordOffset > offset + size)
-			return false;
-	};
-
-	_buffer.resize(recordSize);
-	for (int i = 0; i < _buffer.size(); i++)
-		if (!file.readUInt8(hdl, *((quint8*)(_buffer.data() + i))))
-			return false;
-
 	return true;
 }
 

src/map/IMG/huffmantable.h

@@ -1,31 +1,26 @@
 #ifndef HUFFMANTABLE_H
 #define HUFFMANTABLE_H
 
-#include "subfile.h"
+#include "huffmanbuffer.h"
+
+class RGNFile;
 
 class HuffmanTable {
 public:
-	HuffmanTable() : _s2(0) {}
+	HuffmanTable(quint8 id) : _buffer(id) {}
 
-	bool load(const SubFile &file, SubFile::Handle &hdl, quint32 offset,
+	bool load(const RGNFile *rgn, SubFile::Handle &rgnHdl);
-	  quint32 size, quint32 id);
-	bool isNull() const {return _s2 == 0;}
 	quint8 maxSymbolSize() const {return _s2;}
 	quint32 symbol(quint32 data, quint8 &size) const;
 
-	quint8 id() const {return _id;}
+	quint8 id() const {return _buffer.id();}
 
 private:
-	bool getBuffer(const SubFile &file, SubFile::Handle &hdl, quint32 offset,
+	HuffmanBuffer _buffer;
-	  quint32 size, quint8 id);
-
-	QByteArray _buffer;
 	quint8 _s0, _s1, _s2, _s3;
 	quint8 *_s10, *_s14, *_s18;
 	quint8 _s1c, _s1d, _s1e, _s1f, _s20;
 	quint16 _s22;
-
-	quint8 _id;
 };
 
 #endif // HUFFMANTABLE_H

src/map/IMG/huffmantext.cpp

@@ -0,0 +1,169 @@
+#include "common/garmin.h"
+#include "subfile.h"
+#include "huffmantext.h"
+
+
+static inline quint32 readVUint32(const quint8 *buffer, quint32 bytes)
+{
+	quint32 val = 0;
+
+	for (quint32 i = 0; i < bytes; i++)
+		val = val | (quint32)*(buffer - i) << ((bytes - i - 1) << 3);
+
+	return val;
+}
+
+bool HuffmanText::load(const RGNFile *rgn, SubFile::Handle &rgnHdl)
+{
+	if (!_buffer.load(rgn, rgnHdl))
+		return false;
+
+	quint8 *buffer = (quint8 *)_buffer.constData();
+	_b0 = buffer[0];
+	_b1 = buffer[1];
+	_b2 = buffer[2];
+	_b3 = buffer[3];
+	_vs = vs(buffer[4]);
+	_bs3 = bs(_b3);
+	_bs1 = bs(_b1);
+	_mul = _bs1 + 1 + _vs;
+	_bp1 = buffer + _vs + 4;
+	_bp2 = _bp1 + _mul * _b2;
+	_bp3 = _bp2 + ((_bs3 + 1) << (_b0 & 0xf));
+	_bp4 = _bp3 - 1;
+
+	return true;
+}
+
+bool HuffmanText::fetch(const SubFile *file, SubFile::Handle &hdl,
+  quint32 &data, quint32 &bits, quint32 &usedBits, quint32 &usedData) const
+{
+	quint32 rs, ls, old;
+
+	bits = _b1 - bits;
+
+	if (usedBits < bits) {
+		old = usedBits ? usedData >> (0x20 - usedBits) : 0;
+		if (!file->readVUInt32SW(hdl, 4, usedData))
+			return false;
+		ls = bits - usedBits;
+		rs = 0x20 - (bits - usedBits);
+		old = usedData >> rs | old << ls;
+	} else {
+		ls = bits;
+		rs = usedBits - bits;
+		old = usedData >> (0x20 - bits);
+	}
+
+	usedData = usedData << ls;
+	data = data | old << (0x20 - _b1);
+	usedBits = rs;
+
+	return true;
+}
+
+bool HuffmanText::decode(const SubFile *file, SubFile::Handle &hdl,
+  QVector<quint8> &str) const
+{
+	quint32 bits = 0;
+	quint32 data = 0;
+	quint32 usedBits = 0;
+	quint32 usedData = 0;
+	quint32 ls = 8;
+	quint32 lo = _vs * 8 - 8;
+
+
+	while (true) {
+		if (!fetch(file, hdl, data, bits, usedBits, usedData))
+			return false;
+
+		quint32 off = (data >> (0x20 - (_b0 & 0xf))) * (_bs3 + 1);
+		quint32 sb = _bp2[off];
+		quint32 ss = 0;
+		quint32 sym = _b2 - 1;
+		quint32 size;
+
+		if ((_b0 & 0xf) == 0 || (sb & 1) == 0) {
+			if ((_b0 & 0xf) != 0) {
+				ss = sb >> 1;
+				sym = _bp2[off + 1];
+			}
+
+			quint8 *tp = _bp1 + ss * _mul;
+			quint32 sd = data >> (0x20 - _b1);
+			while (ss < sym) {
+				quint32 cnt = (sym + 1 + ss) >> 1;
+				quint8 *prev = _bp1 + cnt * _mul;
+				quint32 nd = readVUint32(prev + _bs1 - 1, _bs1);
+
+				if (sd <= nd) {
+					sym = cnt - (sd < nd);
+					if (sd < nd) {
+						prev = tp;
+						cnt = ss;
+					}
+				}
+				tp = prev;
+				ss = cnt;
+			}
+
+			quint32 o1 = readVUint32(tp + _bs1 - 1, _bs1);
+			tp = tp + _bs1;
+			quint32 o2 = readVUint32(tp + _vs, _vs);
+			size = tp[0];
+			quint32 os = (sd - o1) >> (_b1 - size);
+
+			if ((_b0 & 0x10) == 0) {
+				sym = readVUint32(_bp4 + (o2 + 1 + os) * _bs3, _bs3);
+			} else {
+				quint32 v = (os + o2) * _b3;
+				quint32 idx = v >> 3;
+				quint32 r = v & 7;
+				quint32 shift = 8 - r;
+				sym = _bp3[idx] >> r;
+				if (shift < _b3) {
+					quint32 sz = bs(_b3 - shift);
+					quint32 val = readVUint32(_bp3 + idx + sz, sz);
+					sym = sym | val << shift;
+				}
+			}
+		} else {
+			sym = readVUint32(_bp2 + off + _bs3, _bs3);
+			size = (sb >> 1);
+		}
+
+		if (_b1 < size)
+			return false;
+		data = data << size;
+		bits = _b1 - size;
+
+		if ((_b3 & 7) == 0) {
+			for (quint32 i = 0; i < (_b3 >> 3); i++) {
+				str.append((quint8)sym);
+				if (((quint8)sym == '\0'))
+					return true;
+				sym = sym >> 8;
+			}
+		} else {
+			quint32 cnt = _b3;
+
+			if (ls <= _b3) {
+				do {
+					quint32 shift = ls;
+					lo = sym << (8 - shift) | (quint32)((quint8)lo >> shift);
+					sym = sym >> shift;
+					str.append((uchar)lo);
+					if (((uchar)lo == '\0'))
+						return true;
+					cnt = cnt - ls;
+					ls = 8;
+				} while (7 < cnt);
+				ls = 8;
+			}
+			if (cnt != 0) {
+				lo = sym << (8 - cnt) | (quint32)((quint8)lo >> cnt);
+				ls = ls - cnt;
+			}
+		}
+	}
+}

src/map/IMG/huffmantext.h

@@ -0,0 +1,35 @@
+#ifndef HUFFMANTEXT_H
+#define HUFFMANTEXT_H
+
+#include "huffmanbuffer.h"
+
+class HuffmanText
+{
+public:
+	HuffmanText() : _buffer(0) {}
+
+	bool load(const RGNFile *rgn, SubFile::Handle &rgnHdl);
+	bool decode(const SubFile *file, SubFile::Handle &hdl,
+	  QVector<quint8> &str) const;
+
+private:
+	bool fetch(const SubFile *file, SubFile::Handle &hdl, quint32 &data,
+	  quint32 &bits, quint32 &usedBits, quint32 &usedData) const;
+
+	HuffmanBuffer _buffer;
+
+	quint32 _b0;
+	quint32 _b1;
+	quint32 _b2;
+	quint32 _b3;
+	quint32 _vs;
+	quint32 _bs3;
+	quint32 _bs1;
+	quint32 _mul;
+	quint8 *_bp1;
+	quint8 *_bp2;
+	quint8 *_bp3;
+	quint8 *_bp4;
+};
+
+#endif // HUFFMANTEXT_H

src/map/IMG/lblfile.cpp

@@ -1,4 +1,6 @@
 #include <QTextCodec>
+#include "huffmantext.h"
+#include "rgnfile.h"
 #include "lblfile.h"
 
 enum Charset {Normal, Symbol, Special};
@@ -55,21 +57,48 @@ static QString capitalized(const QString &str)
 }
 
 
-bool LBLFile::init(Handle &hdl)
+LBLFile::~LBLFile()
 {
-	quint16 codepage;
+	delete _huffmanText;
-	quint8 multiplier, poiMultiplier;
+	delete _table;
+}
 
-	if (!(seek(hdl, _gmpOffset + 0x15) && readUInt32(hdl, _offset)
+bool LBLFile::load(Handle &hdl, const RGNFile *rgn, Handle &rgnHdl)
-	  && readUInt32(hdl, _size) && readUInt8(hdl, multiplier)
+{
+	quint16 hdrLen, codepage;
+
+	if (!(seek(hdl, _gmpOffset) && readUInt16(hdl, hdrLen)
+	  && seek(hdl, _gmpOffset + 0x15) && readUInt32(hdl, _offset)
+	  && readUInt32(hdl, _size) && readUInt8(hdl, _multiplier)
 	  && readUInt8(hdl, _encoding) && seek(hdl, _gmpOffset + 0x57)
 	  && readUInt32(hdl, _poiOffset) && readUInt32(hdl, _poiSize)
-	  && readUInt8(hdl, poiMultiplier) && seek(hdl, _gmpOffset + 0xAA)
+	  && readUInt8(hdl, _poiMultiplier) && seek(hdl, _gmpOffset + 0xAA)
 	  && readUInt16(hdl, codepage)))
 		return false;
 
-	_multiplier = 1<<multiplier;
+	if (hdrLen >= 0x132) {
-	_poiMultiplier = 1<<poiMultiplier;
+		quint32 offset, size;
+		quint16 recordSize;
+		if (!(seek(hdl, _gmpOffset + 0x124) && readUInt32(hdl, offset)
+		  && readUInt32(hdl, size) && readUInt16(hdl, recordSize)))
+			return false;
+
+		if (size && recordSize) {
+			_table = new quint32[size / recordSize];
+			if (!seek(hdl, offset))
+				return false;
+			for (quint32 i = 0; i < size / recordSize; i++) {
+				if (!readVUInt32(hdl, recordSize, _table[i]))
+					return false;
+			}
+		}
+	}
+
+	if (_encoding == 11) {
+		_huffmanText = new HuffmanText();
+		if (!_huffmanText->load(rgn, rgnHdl))
+			return false;
+	}
 
 	if (codepage == 65001)
 		_codec = QTextCodec::codecForName("UTF-8");
@@ -82,6 +111,14 @@ bool LBLFile::init(Handle &hdl)
 	return true;
 }
 
+void LBLFile::clear()
+{
+	delete _huffmanText;
+	delete _table;
+	_huffmanText = 0;
+	_table = 0;
+}
+
 Label LBLFile::label6b(Handle &hdl, quint32 offset, bool capitalize) const
 {
 	Label::Shield::Type shieldType = Label::Shield::None;
@@ -135,20 +172,16 @@ Label LBLFile::label6b(Handle &hdl, quint32 offset, bool capitalize) const
 	}
 }
 
-Label LBLFile::label8b(Handle &hdl, quint32 offset, bool capitalize) const
+Label LBLFile::str2label(const QVector<quint8> &str, bool capitalize) const
 {
 	Label::Shield::Type shieldType = Label::Shield::None;
 	QByteArray label, shieldLabel;
 	QByteArray *bap = &label;
-	quint8 c;
 
-	if (!seek(hdl, offset))
+	for (int i = 0; i < str.size(); i++) {
-		return Label();
+		const quint8 &c = str.at(i);
 
-	while (true) {
+		if (c == 0 || c == 0x1d)
-		if (!readUInt8(hdl, c))
-			return Label();
-		if (!c || c == 0x1d)
 			break;
 
 		if (c == 0x1c)
@@ -158,7 +191,7 @@ Label LBLFile::label8b(Handle &hdl, quint32 offset, bool capitalize) const
 				bap = &label;
 			else
 				bap->append(' ');
-		} else if (c <= 0x07) {
+		} else if (c < 0x07) {
 			shieldType = static_cast<Label::Shield::Type>(c);
 			bap = &shieldLabel;
 		} else if (bap == &shieldLabel && c == 0x20) {
@@ -175,21 +208,74 @@ Label LBLFile::label8b(Handle &hdl, quint32 offset, bool capitalize) const
 	  Label::Shield(shieldType, shieldText));
 }
 
-Label LBLFile::label(Handle &hdl, quint32 offset, bool poi, bool capitalize)
+Label LBLFile::label8b(Handle &hdl, quint32 offset, bool capitalize) const
 {
-	if (!_multiplier && !init(hdl))
+	QVector<quint8> str;
-		return QString();
+	quint8 c;
 
+	if (!seek(hdl, offset))
+		return Label();
+
+	do {
+		if (!readUInt8(hdl, c))
+			return Label();
+		str.append(c);
+	} while (c);
+
+	return str2label(str, capitalize);
+}
+
+Label LBLFile::labelHuffman(Handle &hdl, quint32 offset, bool capitalize) const
+{
+	QVector<quint8> str;
+
+	if (!seek(hdl, offset))
+		return Label();
+	if (!_huffmanText->decode(this, hdl, str))
+		return Label();
+	if (!_table)
+		return str2label(str, capitalize);
+
+
+	QVector<quint8> str2;
+	for (int i = 0; i < str.size(); i++) {
+		quint32 val = _table[str.at(i)];
+		if (val) {
+			if (!seek(hdl, _offset + ((val & 0x7fffff) << _multiplier)))
+				return Label();
+
+			if (str2.size() && str2.back() == '\0')
+				str2[str2.size() - 1] = ' ';
+			else if (str2.size())
+				str2.append(' ');
+			if (!_huffmanText->decode(this, hdl, str2))
+				return Label();
+		} else {
+			if (str.at(i) == 7) {
+				str2.append(0);
+				break;
+			}
+			if (str2.size() && str2.back() == '\0')
+				str2[str2.size() - 1] = ' ';
+			str2.append(str.at(i));
+		}
+	}
+
+	return str2label(str2, capitalize);
+}
+
+Label LBLFile::label(Handle &hdl, quint32 offset, bool poi, bool capitalize) const
+{
 	quint32 labelOffset;
 	if (poi) {
 		quint32 poiOffset;
-		if (!(_poiSize >= offset * _poiMultiplier
+		if (!(_poiSize >= (offset << _poiMultiplier)
-		  && seek(hdl, _poiOffset + offset * _poiMultiplier)
+		  && seek(hdl, _poiOffset + (offset << _poiMultiplier))
 		  && readUInt24(hdl, poiOffset) && (poiOffset & 0x3FFFFF)))
 			return QString();
-		labelOffset = _offset + (poiOffset & 0x3FFFFF) * _multiplier;
+		labelOffset = _offset + ((poiOffset & 0x3FFFFF) << _multiplier);
 	} else
-		labelOffset = _offset + offset * _multiplier;
+		labelOffset = _offset + (offset << _multiplier);
 
 	if (labelOffset > _offset + _size)
 		return QString();
@@ -200,6 +286,8 @@ Label LBLFile::label(Handle &hdl, quint32 offset, bool poi, bool capitalize)
 		case 9:
 		case 10:
 			return label8b(hdl, labelOffset, capitalize);
+		case 11:
+			return labelHuffman(hdl, labelOffset, capitalize);
 		default:
 			return Label();
 	}

src/map/IMG/lblfile.h

@@ -5,28 +5,40 @@
 #include "label.h"
 
 class QTextCodec;
+class HuffmanText;
+class RGNFile;
 
 class LBLFile : public SubFile
 {
 public:
 	LBLFile(IMG *img)
-	  : SubFile(img), _codec(0), _offset(0), _size(0), _poiOffset(0),
+	  : SubFile(img), _huffmanText(0), _table(0), _codec(0), _offset(0),
-	  _poiSize(0), _poiMultiplier(0), _multiplier(0), _encoding(0) {}
+	  _size(0), _poiOffset(0), _poiSize(0), _poiMultiplier(0), _multiplier(0),
-	LBLFile(const QString &path)
+	  _encoding(0) {}
-	  : SubFile(path), _codec(0), _offset(0), _size(0), _poiOffset(0),
+	LBLFile(const QString *path)
-	  _poiSize(0), _poiMultiplier(0), _multiplier(0), _encoding(0) {}
+	  : SubFile(path), _huffmanText(0), _table(0), _codec(0), _offset(0),
+	  _size(0), _poiOffset(0), _poiSize(0), _poiMultiplier(0), _multiplier(0),
+	  _encoding(0) {}
 	LBLFile(SubFile *gmp, quint32 offset) : SubFile(gmp, offset),
-	  _codec(0), _offset(0), _size(0), _poiOffset(0), _poiSize(0),
+	  _huffmanText(0), _table(0), _codec(0), _offset(0), _size(0),
-	  _poiMultiplier(0), _multiplier(0), _encoding(0) {}
+	  _poiOffset(0), _poiSize(0), _poiMultiplier(0), _multiplier(0),
+	  _encoding(0) {}
+	~LBLFile();
+
+	bool load(Handle &hdl, const RGNFile *rgn, Handle &rgnHdl);
+	void clear();
 
 	Label label(Handle &hdl, quint32 offset, bool poi = false,
-	  bool capitalize = true);
+	  bool capitalize = true) const;
 
 private:
-	bool init(Handle &hdl);
+	Label str2label(const QVector<quint8> &str, bool capitalize) const;
-
 	Label label6b(Handle &hdl, quint32 offset, bool capitalize) const;
 	Label label8b(Handle &hdl, quint32 offset, bool capitalize) const;
+	Label labelHuffman(Handle &hdl, quint32 offset, bool capitalize) const;
+
+	HuffmanText *_huffmanText;
+	quint32 *_table;
 
 	QTextCodec *_codec;
 	quint32 _offset;

src/map/IMG/mapdata.cpp

@@ -107,7 +107,7 @@ void MapData::load()
 	else {
 		QString typFile(ProgramPaths::typFile());
 		if (!typFile.isEmpty()) {
-			SubFile typ(typFile);
+			SubFile typ(&typFile);
 			_style = new Style(&typ);
 		} else
 			_style = new Style();

src/map/IMG/netfile.cpp

@@ -3,6 +3,7 @@
 #include "subdiv.h"
 #include "nodfile.h"
 #include "lblfile.h"
+#include "rgnfile.h"
 #include "netfile.h"
 
 
@@ -93,7 +94,7 @@ static bool seekToLine(BitStream4R &bs, quint8 line)
 }
 
 static bool readLine(BitStream4R &bs, const SubDiv *subdiv,
-  const HuffmanTable &table, IMG::Poly &poly)
+  const HuffmanTable *table, MapData::Poly &poly)
 {
 	quint32 v1, v2, v2b;
 	if (!bs.readVuint32SM(v1, v2, v2b))
@@ -113,7 +114,7 @@ static bool readLine(BitStream4R &bs, const SubDiv *subdiv,
 	poly.boundingRect = RectC(c, c);
 	poly.points.append(QPointF(c.lon(), c.lat()));
 
-	HuffmanStreamR stream(bs, table);
+	HuffmanStreamR stream(bs, *table);
 	if (!stream.init())
 		return false;
 	qint32 lonDelta, latDelta;
@@ -132,8 +133,8 @@ static bool readLine(BitStream4R &bs, const SubDiv *subdiv,
 	return stream.atEnd();
 }
 
-static bool readNodeGeometry(NODFile *nod, SubFile::Handle &nodHdl,
+static bool readNodeGeometry(const NODFile *nod, SubFile::Handle &nodHdl,
-  NODFile::AdjacencyInfo &adj, IMG::Poly &poly, quint16 cnt = 0xFFFF)
+  NODFile::AdjacencyInfo &adj, MapData::Poly &poly, quint16 cnt = 0xFFFF)
 {
 	for (int i = 0; i <= cnt; i++) {
 		int ret = nod->nextNode(nodHdl, adj);
@@ -151,7 +152,7 @@ static bool readNodeGeometry(NODFile *nod, SubFile::Handle &nodHdl,
 	return true;
 }
 
-static bool skipNodes(NODFile *nod, SubFile::Handle &nodHdl,
+static bool skipNodes(const NODFile *nod, SubFile::Handle &nodHdl,
   NODFile::AdjacencyInfo &adj, int cnt)
 {
 	for (int i = 0; i < cnt; i++)
@@ -161,10 +162,10 @@ static bool skipNodes(NODFile *nod, SubFile::Handle &nodHdl,
 	return true;
 }
 
-static bool readShape(NODFile *nod, SubFile::Handle &nodHdl,
+static bool readShape(const NODFile *nod, SubFile::Handle &nodHdl,
-  NODFile::AdjacencyInfo &adj, BitStream4R &bs, const HuffmanTable &table,
+  NODFile::AdjacencyInfo &adj, BitStream4R &bs, const HuffmanTable *table,
-  const SubDiv *subdiv, quint32 shift, IMG::Poly &poly, quint16 cnt = 0xFFFF,
+  const SubDiv *subdiv, quint32 shift, MapData::Poly &poly,
-  bool check = false)
+  quint16 cnt = 0xFFFF, bool check = false)
 {
 	quint32 v1, v2, v2b;
 	if (!bs.readVuint32SM(v1, v2, v2b))
@@ -233,7 +234,7 @@ static bool readShape(NODFile *nod, SubFile::Handle &nodHdl,
 		}
 	}
 
-	HuffmanStreamR stream(bs, table);
+	HuffmanStreamR stream(bs, *table);
 	if (!stream.init(lonSign, latSign, flags, extraBits))
 		return false;
 	qint32 lonDelta, latDelta;
@@ -345,8 +346,13 @@ static bool readShape(NODFile *nod, SubFile::Handle &nodHdl,
 }
 
 
-bool NETFile::linkLabel(Handle &hdl, quint32 offset, quint32 size, LBLFile *lbl,
+NETFile::~NETFile()
-  Handle &lblHdl, Label &label)
+{
+	delete _huffmanTable;
+}
+
+bool NETFile::linkLabel(Handle &hdl, quint32 offset, quint32 size,
+  const LBLFile *lbl, Handle &lblHdl, Label &label) const
 {
 	if (!seek(hdl, offset))
 		return false;
@@ -360,19 +366,13 @@ bool NETFile::linkLabel(Handle &hdl, quint32 offset, quint32 size, LBLFile *lbl,
 
 	if (!bs.readUInt24(labelPtr))
 		return false;
-	if (labelPtr & 0x3FFFFF) {
+	if (labelPtr & 0x3FFFFF)
-		if (labelPtr & 0x400000) {
+		label = lbl->label(lblHdl, labelPtr & 0x3FFFFF);
-			quint32 lblOff;
-			if (lblOffset(hdl, labelPtr & 0x3FFFFF, lblOff) && lblOff)
-				label = lbl->label(lblHdl, lblOff);
-		} else
-			label = lbl->label(lblHdl, labelPtr & 0x3FFFFF);
-	}
 
 	return true;
 }
 
-bool NETFile::init(Handle &hdl)
+bool NETFile::load(Handle &hdl, const RGNFile *rgn, Handle &rgnHdl)
 {
 	quint16 hdrLen;
 
@@ -385,31 +385,36 @@ bool NETFile::init(Handle &hdl)
 		quint32 info;
 		if (!(seek(hdl, _gmpOffset + 0x37) && readUInt32(hdl, info)))
 			return false;
-		_tableId = ((info >> 2) & 0xF);
-
 		if (!(seek(hdl, _gmpOffset + 0x43) && readUInt32(hdl, _linksOffset)
 		  && readUInt32(hdl, _linksSize) && readUInt8(hdl, _linksShift)))
 			return false;
-	}
 
-	_init = true;
+		quint8 tableId = ((info >> 2) & 0xF);
+		if (_linksSize && (!rgn->huffmanTable() || rgn->huffmanTable()->id()
+		  != tableId)) {
+			_huffmanTable = new HuffmanTable(tableId);
+			if (!_huffmanTable->load(rgn, rgnHdl))
+				return false;
+		}
+
+		_tp = _huffmanTable ? _huffmanTable : rgn->huffmanTable();
+	}
 
 	return true;
 }
 
-bool NETFile::link(const SubDiv *subdiv, quint32 shift, Handle &hdl,
+void NETFile::clear()
-  NODFile *nod, Handle &nodHdl, LBLFile *lbl, Handle &lblHdl,
-  const NODFile::BlockInfo &blockInfo, quint8 linkId, quint8 lineId,
-  const HuffmanTable &table, QList<IMG::Poly> *lines)
 {
-	if (!_init && !init(hdl))
+	delete _huffmanTable;
-		return false;
+	_huffmanTable = 0;
+}
 
-	Q_ASSERT(_tableId == table.id());
+bool NETFile::link(const SubDiv *subdiv, quint32 shift, Handle &hdl,
-	if (_tableId != table.id())
+  const NODFile *nod, Handle &nodHdl, const LBLFile *lbl, Handle &lblHdl,
-		return false;
+  const NODFile::BlockInfo &blockInfo, quint8 linkId, quint8 lineId,
-
+  QList<MapData::Poly> *lines) const
-	IMG::Poly poly;
+{
+	MapData::Poly poly;
 	if (!nod->linkType(nodHdl, blockInfo, linkId, poly.type))
 		return false;
 
@@ -445,7 +450,7 @@ bool NETFile::link(const SubDiv *subdiv, quint32 shift, Handle &hdl,
 
 		if (s69 == 1) {
 			if (s68 == 1) {
-				if (!readShape(nod, nodHdl, adj, bs, table, subdiv, shift, poly))
+				if (!readShape(nod, nodHdl, adj, bs, _tp, subdiv, shift, poly))
 					return false;
 			} else {
 				if (!readNodeGeometry(nod, nodHdl, adj, poly))
@@ -459,7 +464,7 @@ bool NETFile::link(const SubDiv *subdiv, quint32 shift, Handle &hdl,
 				if (i == lineId) {
 					if (shape) {
 						bool check = (i < ca.size()) ? (ca.at(i) & mask) : false;
-						if (!readShape(nod, nodHdl, adj, bs, table, subdiv,
+						if (!readShape(nod, nodHdl, adj, bs, _tp, subdiv,
 						  shift, poly, step, check))
 							return false;
 					} else {
@@ -483,7 +488,7 @@ bool NETFile::link(const SubDiv *subdiv, quint32 shift, Handle &hdl,
 			return false;
 		if (!seekToLine(bs, lineId))
 			return false;
-		if (!readLine(bs, subdiv, table, poly))
+		if (!readLine(bs, subdiv, _tp, poly))
 			return false;
 	}
 
@@ -496,11 +501,8 @@ bool NETFile::link(const SubDiv *subdiv, quint32 shift, Handle &hdl,
 	return true;
 }
 
-bool NETFile::lblOffset(Handle &hdl, quint32 netOffset, quint32 &lblOffset)
+bool NETFile::lblOffset(Handle &hdl, quint32 netOffset, quint32 &lblOffset) const
 {
-	if (!_init && !init(hdl))
-		return false;
-
 	if (!(seek(hdl, _offset + (netOffset << _shift))
 	  && readUInt24(hdl, lblOffset)))
 		return false;

src/map/IMG/netfile.h

@@ -1,42 +1,44 @@
 #ifndef NETFILE_H
 #define NETFILE_H
 
-#include "img.h"
 #include "subfile.h"
 #include "nodfile.h"
 
-class NODFile;
 class LBLFile;
+class RGNFile;
 class SubDiv;
 class HuffmanTable;
 
 class NETFile : public SubFile
 {
 public:
-	NETFile(IMG *img) : SubFile(img), _offset(0), _size(0), _linksOffset(0),
+	NETFile(IMG *img) : SubFile(img), _huffmanTable(0), _tp(0), _offset(0),
-	  _linksSize(0), _shift(0), _linksShift(0), _init(false) {}
+	  _size(0), _linksOffset(0), _linksSize(0), _shift(0), _linksShift(0) {}
-	NETFile(const QString &path) : SubFile(path), _offset(0), _size(0),
+	NETFile(const QString *path) : SubFile(path), _huffmanTable(0), _tp(0),
-	  _linksOffset(0), _linksSize(0), _shift(0), _linksShift(0),
-	  _init(false) {}
-	NETFile(SubFile *gmp, quint32 offset) : SubFile(gmp, offset),
 	  _offset(0), _size(0), _linksOffset(0), _linksSize(0), _shift(0),
-	  _linksShift(0), _init(false) {}
+	  _linksShift(0) {}
+	NETFile(SubFile *gmp, quint32 offset) : SubFile(gmp, offset),
+	  _huffmanTable(0), _tp(0), _offset(0), _size(0), _linksOffset(0),
+	  _linksSize(0), _shift(0), _linksShift(0) {}
+	~NETFile();
 
-	bool lblOffset(Handle &hdl, quint32 netOffset, quint32 &lblOffset);
+	bool load(Handle &hdl, const RGNFile *rgn, Handle &rgnHdl);
-	bool link(const SubDiv *subdiv, quint32 shift, Handle &hdl, NODFile *nod,
+	void clear();
-	  Handle &nodHdl, LBLFile *lbl, Handle &lblHdl,
+
+	bool lblOffset(Handle &hdl, quint32 netOffset, quint32 &lblOffset) const;
+	bool link(const SubDiv *subdiv, quint32 shift, Handle &hdl,
+	  const NODFile *nod, Handle &nodHdl, const LBLFile *lbl, Handle &lblHdl,
 	  const NODFile::BlockInfo &blockInfo, quint8 linkId, quint8 lineId,
-	  const HuffmanTable &table, QList<IMG::Poly> *lines);
+	  QList<MapData::Poly> *lines) const;
 
 private:
-	bool init(Handle &hdl);
+	bool linkLabel(Handle &hdl, quint32 offset, quint32 size,
-	bool linkLabel(Handle &hdl, quint32 offset, quint32 size, LBLFile *lbl,
+	  const LBLFile *lbl, Handle &lblHdl, Label &label) const;
-	  Handle &lblHdl, Label &label);
 
+	HuffmanTable *_huffmanTable;
+	const HuffmanTable *_tp;
 	quint32 _offset, _size, _linksOffset, _linksSize;
 	quint8 _shift, _linksShift;
-	quint8 _tableId;
-	bool _init;
 };
 
 #endif // NETFILE_H

src/map/IMG/nodfile.cpp

@@ -81,14 +81,14 @@ static bool skipOptAdjData(BitStream1 &bs)
 }
 
 
-bool NODFile::init(Handle &hdl)
+bool NODFile::load(Handle &hdl)
 {
 	quint16 hdrLen;
 
 	if (!(seek(hdl, _gmpOffset) && readUInt16(hdl, hdrLen)))
 		return false;
 	if (hdrLen < 0x7b)
-		return false;
+		return true;
 
 	if (!(seek(hdl, _gmpOffset + 0x1d) && readUInt32(hdl, _flags)
 	  && readUInt8(hdl, _blockShift) && readUInt8(hdl, _nodeShift)))
@@ -113,14 +113,6 @@ bool NODFile::init(Handle &hdl)
 	return (_indexIdSize > 0);
 }
 
-quint32 NODFile::indexIdSize(Handle &hdl)
-{
-	if (!_indexIdSize && !init(hdl))
-		return 0;
-
-	return _indexIdSize;
-}
-
 bool NODFile::readBlock(Handle &hdl, quint32 blockOffset,
   BlockInfo &blockInfo) const
 {
@@ -494,7 +486,7 @@ bool NODFile::relAdjInfo(Handle &hdl, AdjacencyInfo &adj) const
 	return true;
 }
 
-int NODFile::nextNode(Handle &hdl, AdjacencyInfo &adjInfo)
+int NODFile::nextNode(Handle &hdl, AdjacencyInfo &adjInfo) const
 {
 	if (adjInfo.nodeOffset == 0xFFFFFFFF)
 		return 1;

src/map/IMG/nodfile.h

@@ -1,7 +1,6 @@
 #ifndef NODFILE_H
 #define NODFILE_H
 
-#include "img.h"
 #include "subfile.h"
 
 class NODFile : public SubFile
@@ -57,7 +56,7 @@ public:
 	NODFile(IMG *img) : SubFile(img), _indexOffset(0), _indexSize(0),
 	  _indexFlags(0), _blockOffset(0), _blockSize(0), _indexRecordSize(0),
 	  _blockRecordSize(0), _blockShift(0), _nodeShift(0), _indexIdSize(0) {}
-	NODFile(const QString &path) : SubFile(path), _indexOffset(0), _indexSize(0),
+	NODFile(const QString *path) : SubFile(path), _indexOffset(0), _indexSize(0),
 	  _indexFlags(0), _blockOffset(0), _blockSize(0), _indexRecordSize(0),
 	  _blockRecordSize(0), _blockShift(0), _nodeShift(0), _indexIdSize(0) {}
 	NODFile(SubFile *gmp, quint32 offset) : SubFile(gmp, offset),
@@ -65,16 +64,17 @@ public:
 	  _blockSize(0), _indexRecordSize(0), _blockRecordSize(0), _blockShift(0),
 	  _nodeShift(0), _indexIdSize(0) {}
 
-	quint32 indexIdSize(Handle &hdl);
+	bool load(Handle &hdl);
+
+	quint32 indexIdSize() const {return _indexIdSize;}
 	bool blockInfo(Handle &hdl, quint32 blockId, BlockInfo &blockInfo) const;
 	bool linkInfo(Handle &hdl, const BlockInfo &blockInfo, quint32 linkId,
 	  LinkInfo &linkInfo) const;
 	bool linkType(Handle &hdl, const BlockInfo &blockInfo, quint8 linkId,
 	  quint32 &type) const;
-	int nextNode(Handle &hdl, AdjacencyInfo &adjInfo);
+	int nextNode(Handle &hdl, AdjacencyInfo &adjInfo) const;
 
 private:
-	bool init(Handle &hdl);
 	bool nodeInfo(Handle &hdl, const BlockInfo &blockInfo, quint32 nodeOffset,
 	  NodeInfo &nodeInfo) const;
 	bool nodeOffset(Handle &hdl, const BlockInfo &blockInfo, quint8 nodeId,

src/map/IMG/rgnfile.cpp

@@ -24,6 +24,11 @@ static quint64 pointId(const QPoint &pos, quint32 type, quint32 labelPtr)
 	return id;
 }
 
+RGNFile::~RGNFile()
+{
+	delete _huffmanTable;
+}
+
 bool RGNFile::skipClassFields(Handle &hdl) const
 {
 	quint8 flags;
@@ -96,7 +101,7 @@ bool RGNFile::skipGblFields(Handle &hdl, quint32 flags) const
 	return seek(hdl, pos(hdl) + cnt);
 }
 
-bool RGNFile::init(Handle &hdl)
+bool RGNFile::load(Handle &hdl)
 {
 	quint16 hdrLen;
 
@@ -125,24 +130,29 @@ bool RGNFile::init(Handle &hdl)
 	}
 
 	if (hdrLen >= 0x7D) {
-		quint32 dictOffset, dictSize, info;
+		quint32 info;
-		if (!(seek(hdl, _gmpOffset + 0x71) && readUInt32(hdl, dictOffset)
+		if (!(seek(hdl, _gmpOffset + 0x71) && readUInt32(hdl, _dictOffset)
-		  && readUInt32(hdl, dictSize) && readUInt32(hdl, info)))
+		  && readUInt32(hdl, _dictSize) && readUInt32(hdl, info)))
 			return false;
 
-		if (dictSize && dictOffset && (info & 0x1E))
+		if (_dictSize && _dictOffset && (info & 0x1E)) {
-			if (!_huffmanTable.load(*this, hdl, dictOffset, dictSize,
+			_huffmanTable = new HuffmanTable(((info >> 1) & 0xF) - 1);
-			  ((info >> 1) & 0xF) - 1))
+			if (!_huffmanTable->load(this, hdl))
 				return false;
+		}
 	}
 
-	_init = true;
-
 	return true;
 }
 
+void RGNFile::clear()
+{
+	delete _huffmanTable;
+	_huffmanTable = 0;
+}
+
 bool RGNFile::polyObjects(Handle &hdl, const SubDiv *subdiv,
-  SegmentType segmentType, LBLFile *lbl, Handle &lblHdl, NETFile *net,
+  SegmentType segmentType, const LBLFile *lbl, Handle &lblHdl, NETFile *net,
   Handle &netHdl, QList<IMG::Poly> *polys) const
 {
 	const SubDiv::Segment &segment = (segmentType == Line)
@@ -218,7 +228,7 @@ bool RGNFile::polyObjects(Handle &hdl, const SubDiv *subdiv,
 }
 
 bool RGNFile::extPolyObjects(Handle &hdl, const SubDiv *subdiv, quint32 shift,
-  SegmentType segmentType, LBLFile *lbl, Handle &lblHdl,
+  SegmentType segmentType, const LBLFile *lbl, Handle &lblHdl,
   QList<IMG::Poly> *polys) const
 {
 	quint32 labelPtr, len;
@@ -246,13 +256,13 @@ bool RGNFile::extPolyObjects(Handle &hdl, const SubDiv *subdiv, quint32 shift,
 		poly.type = 0x10000 | (quint16(type)<<8) | (subtype & 0x1F);
 		labelPtr = 0;
 
-		if (!_huffmanTable.isNull()) {
+		if (_huffmanTable) {
 			pos = QPoint(LS(subdiv->lon(), 8) + LS(lon, 32-subdiv->bits()),
 			  LS(subdiv->lat(), 8) + LS(lat, (32-subdiv->bits())));
 
 			qint32 lonDelta, latDelta;
 			BitStream4F bs(*this, hdl, len);
-			HuffmanStreamF stream(bs, _huffmanTable);
+			HuffmanStreamF stream(bs, *_huffmanTable);
 			if (!stream.init(segmentType == Line))
 				return false;
 
@@ -329,7 +339,7 @@ bool RGNFile::extPolyObjects(Handle &hdl, const SubDiv *subdiv, quint32 shift,
 }
 
 bool RGNFile::pointObjects(Handle &hdl, const SubDiv *subdiv,
-  SegmentType segmentType, LBLFile *lbl, Handle &lblHdl,
+  SegmentType segmentType, const LBLFile *lbl, Handle &lblHdl,
   QList<IMG::Point> *points) const
 {
 	const SubDiv::Segment &segment = (segmentType == IndexedPoint)
@@ -363,9 +373,8 @@ bool RGNFile::pointObjects(Handle &hdl, const SubDiv *subdiv,
 		point.coordinates = Coordinates(toWGS24(pos.x()), toWGS24(pos.y()));
 		point.id = pointId(pos, point.type, labelPtr & 0x3FFFFF);
 		if (lbl && (labelPtr & 0x3FFFFF))
-			point.label = lbl->label(lblHdl, labelPtr & 0x3FFFFF,
+			point.label = lbl->label(lblHdl, labelPtr & 0x3FFFFF, labelPtr & 0x400000,
-			  labelPtr & 0x400000, !(point.type == 0x1400 || point.type == 0x1500
+			  !(point.type == 0x1400 || point.type == 0x1500 || point.type == 0x1e00));
-			  || point.type == 0x1e00));
 
 		points->append(point);
 	}
@@ -373,11 +382,12 @@ bool RGNFile::pointObjects(Handle &hdl, const SubDiv *subdiv,
 	return true;
 }
 
-bool RGNFile::extPointObjects(Handle &hdl, const SubDiv *subdiv, LBLFile *lbl,
+bool RGNFile::extPointObjects(Handle &hdl, const SubDiv *subdiv,
-  Handle &lblHdl, QList<IMG::Point> *points) const
+  const LBLFile *lbl, Handle &lblHdl, QList<IMG::Point> *points) const
 {
 	const SubDiv::Segment &segment = subdiv->extPoints();
 
+
 	if (!segment.isValid())
 		return true;
 	if (!seek(hdl, segment.offset()))
@@ -423,30 +433,27 @@ bool RGNFile::extPointObjects(Handle &hdl, const SubDiv *subdiv, LBLFile *lbl,
 }
 
 bool RGNFile::links(Handle &hdl, const SubDiv *subdiv, quint32 shift,
-  NETFile *net, Handle &netHdl, NODFile *nod, Handle &nodHdl, LBLFile *lbl,
+  const NETFile *net, Handle &netHdl, const NODFile *nod, Handle &nodHdl,
-  Handle &lblHdl, QList<IMG::Poly> *lines) const
+  const LBLFile *lbl, Handle &lblHdl, QList<IMG::Poly> *lines) const
 {
-	quint32 size, blockIndexIdSize, blockIndexId;
+	quint32 size, blockIndexId;
 	quint8 flags;
 	const SubDiv::Segment &segment = subdiv->roadReferences();
 
+	if (!net || !nod)
+		return false;
 	if (!segment.isValid())
 		return true;
 	if (!seek(hdl, segment.offset()))
 		return false;
 
-	if (!net || !nod)
-		return false;
-	if (!(blockIndexIdSize = nod->indexIdSize(nodHdl)))
-		return false;
-
 	while (pos(hdl) < segment.end()) {
 		if (!readVUInt32(hdl, size))
 			return false;
 
 		quint32 entryStart = pos(hdl);
 
-		if (!(readUInt8(hdl, flags) && readVUInt32(hdl, blockIndexIdSize,
+		if (!(readUInt8(hdl, flags) && readVUInt32(hdl, nod->indexIdSize(),
 		  blockIndexId)))
 			return false;
 
@@ -494,10 +501,11 @@ bool RGNFile::links(Handle &hdl, const SubDiv *subdiv, quint32 shift,
 			}
 
 			net->link(subdiv, shift, netHdl, nod, nodHdl, lbl, lblHdl,
-			  blockInfo, linkId, lineId, _huffmanTable, lines);
+			  blockInfo, linkId, lineId, lines);
 		}
 
-		Q_ASSERT(entryStart + size == pos(hdl));
+		if (entryStart + size != pos(hdl))
+			return false;
 	}
 
 	return true;
@@ -546,7 +554,7 @@ QMap<RGNFile::SegmentType, SubDiv::Segment> RGNFile::segments(Handle &hdl,
 	return ret;
 }
 
-bool RGNFile::subdivInit(Handle &hdl, SubDiv *subdiv) const
+bool RGNFile::subdivInit(Handle &hdl, SubDiv *subdiv)
 {
 	QMap<RGNFile::SegmentType, SubDiv::Segment> seg(segments(hdl, subdiv));
 	SubDiv::Segment extPoints, extLines, extPolygons;

src/map/IMG/rgnfile.h

@@ -1,14 +1,13 @@
 #ifndef RGNFILE_H
 #define RGNFILE_H
 
-#include "img.h"
 #include "subfile.h"
 #include "subdiv.h"
-#include "huffmantable.h"
 
 class LBLFile;
 class NETFile;
 class NODFile;
+class HuffmanTable;
 
 class RGNFile : public SubFile
 {
@@ -22,35 +21,41 @@ public:
 	};
 
 	RGNFile(IMG *img)
-	  : SubFile(img), _offset(0), _size(0), _polygonsOffset(0),
+	  : SubFile(img), _huffmanTable(0), _offset(0), _size(0), _polygonsOffset(0),
 	  _polygonsSize(0), _linesOffset(0), _linesSize(0), _pointsOffset(0),
-	  _pointsSize(0), _init(false) {}
+	  _pointsSize(0) {}
-	RGNFile(const QString &path)
+	RGNFile(const QString *path)
-	  : SubFile(path), _offset(0), _size(0), _polygonsOffset(0),
+	  : SubFile(path), _huffmanTable(0), _offset(0), _size(0), _polygonsOffset(0),
 	  _polygonsSize(0), _linesOffset(0), _linesSize(0), _pointsOffset(0),
-	  _pointsSize(0), _init(false) {}
+	  _pointsSize(0) {}
-	RGNFile(SubFile *gmp, quint32 offset) : SubFile(gmp, offset), _offset(0),
+	RGNFile(SubFile *gmp, quint32 offset) : SubFile(gmp, offset),
-	  _size(0), _polygonsOffset(0), _polygonsSize(0), _linesOffset(0),
+	  _huffmanTable(0), _offset(0), _size(0), _polygonsOffset(0),
-	  _linesSize(0), _pointsOffset(0), _pointsSize(0), _init(false) {}
+	  _polygonsSize(0), _linesOffset(0), _linesSize(0), _pointsOffset(0),
+	  _pointsSize(0) {}
+	~RGNFile();
 
-	bool initialized() const {return _init;}
+	void clear();
-	bool init(Handle &hdl);
+	bool load(Handle &hdl);
 
 	bool polyObjects(Handle &hdl, const SubDiv *subdiv, SegmentType segmentType,
-	  LBLFile *lbl, Handle &lblHdl, NETFile *net, Handle &netHdl,
+	  const LBLFile *lbl, Handle &lblHdl, NETFile *net, Handle &netHdl,
-	  QList<IMG::Poly> *polys) const;
+	  QList<MapData::Poly> *polys) const;
 	bool pointObjects(Handle &hdl, const SubDiv *subdiv, SegmentType segmentType,
-	  LBLFile *lbl, Handle &lblHdl, QList<IMG::Point> *points) const;
+	  const LBLFile *lbl, Handle &lblHdl, QList<MapData::Point> *points) const;
 	bool extPolyObjects(Handle &hdl, const SubDiv *subdiv, quint32 shift,
-	  SegmentType segmentType, LBLFile *lbl, Handle &lblHdl,
+	  SegmentType segmentType, const LBLFile *lbl, Handle &lblHdl,
-	  QList<IMG::Poly> *polys) const;
+	  QList<MapData::Poly> *polys) const;
-	bool extPointObjects(Handle &hdl, const SubDiv *subdiv, LBLFile *lbl,
+	bool extPointObjects(Handle &hdl, const SubDiv *subdiv, const LBLFile *lbl,
-	  Handle &lblHdl, QList<IMG::Point> *points) const;
+	  Handle &lblHdl, QList<MapData::Point> *points) const;
-	bool links(Handle &hdl, const SubDiv *subdiv, quint32 shift, NETFile *net,
+	bool links(Handle &hdl, const SubDiv *subdiv, quint32 shift,
-	  Handle &netHdl, NODFile *nod, Handle &nodHdl, LBLFile *lbl, Handle &lblHdl,
+	  const NETFile *net, Handle &netHdl, const NODFile *nod, Handle &nodHdl,
-	  QList<IMG::Poly> *lines) const;
+	  const LBLFile *lbl, Handle &lblHdl, QList<MapData::Poly> *lines) const;
 
-	bool subdivInit(Handle &hdl, SubDiv *subdiv) const;
+	bool subdivInit(Handle &hdl, SubDiv *subdiv);
+
+	const HuffmanTable *huffmanTable() const {return _huffmanTable;}
+	quint32 dictOffset() const {return _dictOffset;}
+	quint32 dictSize() const {return _dictSize;}
 
 private:
 	QMap<SegmentType, SubDiv::Segment> segments(Handle &hdl, SubDiv *subdiv)
@@ -60,8 +65,12 @@ private:
 	  const;
 	bool skipGblFields(Handle &hdl, quint32 flags) const;
 
+	HuffmanTable *_huffmanTable;
+
 	quint32 _offset;
 	quint32 _size;
+	quint32 _dictOffset;
+	quint32 _dictSize;
 
 	quint32 _polygonsOffset;
 	quint32 _polygonsSize;
@@ -75,10 +84,6 @@ private:
 	quint32 _pointsSize;
 	quint32 _pointsLclFlags[3];
 	quint32 _pointsGblFlags;
-
-	HuffmanTable _huffmanTable;
-
-	bool _init;
 };
 
 #endif // RGNFILE_H

src/map/IMG/subfile.h

@@ -42,14 +42,12 @@ public:
 	  : _gmpOffset(0), _img(img), _blocks(new QVector<quint16>()), _path(0) {}
 	SubFile(SubFile *gmp, quint32 offset) : _gmpOffset(offset), _img(gmp->_img),
 	  _blocks(gmp->_blocks), _path(gmp->_path) {}
-	SubFile(const QString &path)
+	SubFile(const QString *path)
-	  : _gmpOffset(0), _img(0), _blocks(0), _path(new QString(path)) {}
+	  : _gmpOffset(0), _img(0), _blocks(0), _path(path) {}
 	~SubFile()
 	{
-		if (!_gmpOffset) {
+		if (!_gmpOffset)
 			delete _blocks;
-			delete _path;
-		}
 	}
 
 	void addBlock(quint16 block) {_blocks->append(block);}
@@ -151,7 +149,7 @@ private:
 
 	IMG *_img;
 	QVector<quint16> *_blocks;
-	QString *_path;
+	const QString *_path;
 };
 
 #endif // SUBFILE_H

src/map/IMG/trefile.h

@@ -14,7 +14,7 @@ class TREFile : public SubFile
 {
 public:
 	TREFile(IMG *img) : SubFile(img) {}
-	TREFile(const QString &path) : SubFile(path) {}
+	TREFile(const QString *path) : SubFile(path) {}
 	TREFile(SubFile *gmp, quint32 offset) : SubFile(gmp, offset) {}
 	~TREFile();
 

src/map/IMG/vectortile.cpp

@@ -1,16 +1,16 @@
 #include "vectortile.h"
 
 
-static void copyPolys(const RectC &rect, QList<IMG::Poly> *src,
+static void copyPolys(const RectC &rect, QList<MapData::Poly> *src,
-  QList<IMG::Poly> *dst)
+  QList<MapData::Poly> *dst)
 {
 	for (int i = 0; i < src->size(); i++)
 		if (rect.intersects(src->at(i).boundingRect))
 			dst->append(src->at(i));
 }
 
-static void copyPoints(const RectC &rect, QList<IMG::Point> *src,
+static void copyPoints(const RectC &rect, QList<MapData::Point> *src,
-  QList<IMG::Point> *dst)
+  QList<MapData::Point> *dst)
 {
 	for (int j = 0; j < src->size(); j++)
 		if (rect.contains(src->at(j).coordinates))
@@ -38,58 +38,6 @@ SubFile *VectorTile::file(SubFile::Type type)
 	}
 }
 
-SubFile *VectorTile::addFile(IMG *img, SubFile::Type type)
-{
-	switch (type) {
-		case SubFile::TRE:
-			_tre = new TREFile(img);
-			return _tre;
-		case SubFile::RGN:
-			_rgn = new RGNFile(img);
-			return _rgn;
-		case SubFile::LBL:
-			_lbl = new LBLFile(img);
-			return _lbl;
-		case SubFile::NET:
-			_net = new NETFile(img);
-			return _net;
-		case SubFile::NOD:
-			_nod = new NODFile(img);
-			return _nod;
-		case SubFile::GMP:
-			_gmp = new SubFile(img);
-			return _gmp;
-		default:
-			return 0;
-	}
-}
-
-SubFile *VectorTile::addFile(const QString &path, SubFile::Type type)
-{
-	switch (type) {
-		case SubFile::TRE:
-			_tre = new TREFile(path);
-			return _tre;
-		case SubFile::RGN:
-			_rgn = new RGNFile(path);
-			return _rgn;
-		case SubFile::LBL:
-			_lbl = new LBLFile(path);
-			return _lbl;
-		case SubFile::NET:
-			_net = new NETFile(path);
-			return _net;
-		case SubFile::NOD:
-			_nod = new NODFile(path);
-			return _nod;
-		case SubFile::GMP:
-			_gmp = new SubFile(path);
-			return _gmp;
-		default:
-			return 0;
-	}
-}
-
 bool VectorTile::init()
 {
 	if (_gmp && !initGMP())
@@ -120,23 +68,54 @@ bool VectorTile::initGMP()
 	return true;
 }
 
+bool VectorTile::load(SubFile::Handle &rgnHdl, SubFile::Handle &lblHdl,
+  SubFile::Handle &netHdl, SubFile::Handle &nodHdl)
+{
+	_loaded = -1;
+
+	if (!_rgn->load(rgnHdl))
+		return false;
+	if (_lbl && !_lbl->load(lblHdl, _rgn, rgnHdl))
+		return false;
+	if (_net && !_net->load(netHdl, _rgn, rgnHdl))
+		return false;
+	if (_nod && !_nod->load(nodHdl))
+		return false;
+
+	_loaded = 1;
+
+	return true;
+}
+
+void VectorTile::clear()
+{
+	_tre->clear();
+	_rgn->clear();
+	if (_lbl)
+		_lbl->clear();
+	if (_net)
+		_net->clear();
+
+	_loaded = 0;
+}
+
 void VectorTile::polys(const RectC &rect, int bits, bool baseMap,
-  QList<IMG::Poly> *polygons, QList<IMG::Poly> *lines,
+  QList<MapData::Poly> *polygons, QList<MapData::Poly> *lines,
-  QCache<const SubDiv *, IMG::Polys> *polyCache) const
+  QCache<const SubDiv *, MapData::Polys> *polyCache)
 {
 	SubFile::Handle rgnHdl(_rgn), lblHdl(_lbl), netHdl(_net), nodHdl(_nod);
 
-	if (!_rgn->initialized() && !_rgn->init(rgnHdl))
+	if (_loaded < 0 || (!_loaded && !load(rgnHdl, lblHdl, netHdl, nodHdl)))
 		return;
 
 	QList<SubDiv*> subdivs = _tre->subdivs(rect, bits, baseMap);
 	for (int i = 0; i < subdivs.size(); i++) {
 		SubDiv *subdiv = subdivs.at(i);
 
-		IMG::Polys *polys = polyCache->object(subdiv);
+		MapData::Polys *polys = polyCache->object(subdiv);
 		if (!polys) {
 			quint32 shift = _tre->shift(subdiv->bits());
-			QList<IMG::Poly> p, l;
+			QList<MapData::Poly> p, l;
 
 			if (!subdiv->initialized() && !_rgn->subdivInit(rgnHdl, subdiv))
 				continue;
@@ -154,7 +133,7 @@ void VectorTile::polys(const RectC &rect, int bits, bool baseMap,
 
 			copyPolys(rect, &p, polygons);
 			copyPolys(rect, &l, lines);
-			polyCache->insert(subdiv, new IMG::Polys(p, l));
+			polyCache->insert(subdiv, new MapData::Polys(p, l));
 		} else {
 			copyPolys(rect, &(polys->polygons), polygons);
 			copyPolys(rect, &(polys->lines), lines);
@@ -163,21 +142,21 @@ void VectorTile::polys(const RectC &rect, int bits, bool baseMap,
 }
 
 void VectorTile::points(const RectC &rect, int bits, bool baseMap,
-  QList<IMG::Point> *points, QCache<const SubDiv *,
+  QList<MapData::Point> *points, QCache<const SubDiv *,
-  QList<IMG::Point> > *pointCache) const
+  QList<MapData::Point> > *pointCache)
 {
-	SubFile::Handle rgnHdl(_rgn), lblHdl(_lbl);
+	SubFile::Handle rgnHdl(_rgn), lblHdl(_lbl), netHdl(_net), nodHdl(_nod);
 
-	if (!_rgn->initialized() && !_rgn->init(rgnHdl))
+	if (_loaded < 0 || (!_loaded && !load(rgnHdl, lblHdl, netHdl, nodHdl)))
 		return;
 
 	QList<SubDiv*> subdivs = _tre->subdivs(rect, bits, baseMap);
 	for (int i = 0; i < subdivs.size(); i++) {
 		SubDiv *subdiv = subdivs.at(i);
 
-		QList<IMG::Point> *pl = pointCache->object(subdiv);
+		QList<MapData::Point> *pl = pointCache->object(subdiv);
 		if (!pl) {
-			QList<IMG::Point> p;
+			QList<MapData::Point> p;
 
 			if (!subdiv->initialized() && !_rgn->subdivInit(rgnHdl, subdiv))
 				continue;
@@ -189,7 +168,7 @@ void VectorTile::points(const RectC &rect, int bits, bool baseMap,
 			_rgn->extPointObjects(rgnHdl, subdiv, _lbl, lblHdl, &p);
 
 			copyPoints(rect, &p, points);
-			pointCache->insert(subdiv, new QList<IMG::Point>(p));
+			pointCache->insert(subdiv, new QList<MapData::Point>(p));
 		} else
 			copyPoints(rect, pl, points);
 	}

src/map/IMG/vectortile.h

@@ -1,7 +1,6 @@
 #ifndef VECTORTILE_H
 #define VECTORTILE_H
 
-#include "trefile.h"
 #include "trefile.h"
 #include "rgnfile.h"
 #include "lblfile.h"
@@ -10,7 +9,8 @@
 
 class VectorTile {
 public:
-	VectorTile() : _tre(0), _rgn(0), _lbl(0), _net(0), _nod(0), _gmp(0) {}
+	VectorTile()
+	  : _tre(0), _rgn(0), _lbl(0), _net(0), _nod(0), _gmp(0), _loaded(0) {}
 	~VectorTile()
 	{
 		delete _tre; delete _rgn; delete _lbl; delete _net; delete _nod;
@@ -19,21 +19,19 @@ public:
 
 	bool init();
 	void markAsBasemap() {_tre->markAsBasemap();}
-	void clear() {_tre->clear();}
+	void clear();
 
 	const RectC &bounds() const {return _tre->bounds();}
 	Range zooms() const {return _tre->zooms();}
 
 	SubFile *file(SubFile::Type type);
-	SubFile *addFile(IMG *img, SubFile::Type type);
-	SubFile *addFile(const QString &path, SubFile::Type type);
 
 	void polys(const RectC &rect, int bits, bool baseMap,
-	  QList<IMG::Poly> *polygons, QList<IMG::Poly> *lines,
+	  QList<MapData::Poly> *polygons, QList<MapData::Poly> *lines,
-	  QCache<const SubDiv *, IMG::Polys> *polyCache) const;
+	  QCache<const SubDiv *, MapData::Polys> *polyCache);
 	void points(const RectC &rect, int bits, bool baseMap,
-	  QList<IMG::Point> *points, QCache<const SubDiv*,
+	  QList<MapData::Point> *points, QCache<const SubDiv*,
-	  QList<IMG::Point> > *pointCache) const;
+	  QList<MapData::Point> > *pointCache);
 
 	static bool isTileFile(SubFile::Type type)
 	{
@@ -42,8 +40,37 @@ public:
 		  || type == SubFile::NOD || type == SubFile::GMP);
 	}
 
+	template<typename T>
+	SubFile *addFile(T *container, SubFile::Type type)
+	{
+		switch (type) {
+			case SubFile::TRE:
+				_tre = new TREFile(container);
+				return _tre;
+			case SubFile::RGN:
+				_rgn = new RGNFile(container);
+				return _rgn;
+			case SubFile::LBL:
+				_lbl = new LBLFile(container);
+				return _lbl;
+			case SubFile::NET:
+				_net = new NETFile(container);
+				return _net;
+			case SubFile::NOD:
+				_nod = new NODFile(container);
+				return _nod;
+			case SubFile::GMP:
+				_gmp = new SubFile(container);
+				return _gmp;
+			default:
+				return 0;
+		}
+	}
+
 private:
 	bool initGMP();
+	bool load(SubFile::Handle &rgnHdl, SubFile::Handle &lblHdl,
+	  SubFile::Handle &netHdl, SubFile::Handle &nodHdl);
 
 	TREFile *_tre;
 	RGNFile *_rgn;
@@ -51,6 +78,8 @@ private:
 	NETFile *_net;
 	NODFile *_nod;
 	SubFile *_gmp;
+
+	int _loaded;
 };
 
 #ifndef QT_NO_DEBUG