Do not cache the raster data

src/map/IMG/gmap.h

@@ -12,7 +12,7 @@ public:
 	GMAP(const QString &fileName);
 	~GMAP();
 
-	QString fileName() const {return _fileName;}
+	const QString &fileName() const {return _fileName;}
 
 	static bool isGMAP(const QString &path);
 

src/map/IMG/img.cpp

@@ -1,5 +1,6 @@
 #include <QMap>
 #include <QtEndian>
+#include <QFile>
 #include "vectortile.h"
 #include "img.h"
 
@@ -24,7 +25,7 @@ static SubFile::Type tileType(const char str[3])
 		return SubFile::Unknown;
 }
 
-IMG::IMG(const QString &fileName) : _file(fileName)
+IMG::IMG(const QString &fileName) : _fileName(fileName)
 {
 #define CHECK(condition) \
 	if (!(condition)) { \
@@ -33,19 +34,20 @@ IMG::IMG(const QString &fileName) : _file(fileName)
 		return; \
 	}
 
+	QFile file(fileName);
 	TileMap tileMap;
 	QByteArray typFile;
 
-	if (!_file.open(QFile::ReadOnly)) {
-		_errorString = _file.errorString();
+	if (!file.open(QFile::ReadOnly)) {
+		_errorString = file.errorString();
 		return;
 	}
 
 	// Read IMG header
 	char signature[7], identifier[7];
-	_file.read((char*)&_key, 1) && _file.seek(0x10)
-	  && read(signature, sizeof(signature)) && _file.seek(0x41)
-	  && read(identifier, sizeof(identifier));
+	file.read((char*)&_key, 1) && file.seek(0x10)
+	  && read(file, signature, sizeof(signature)) && file.seek(0x41)
+	  && read(file, identifier, sizeof(identifier));
 	if (memcmp(signature, "DSKIMG", sizeof(signature))
 	  || memcmp(identifier, "GARMIN", sizeof(identifier))) {
 		_errorString = "Not a Garmin IMG file";
@@ -53,9 +55,9 @@ IMG::IMG(const QString &fileName) : _file(fileName)
 	}
 	char d1[20], d2[31];
 	quint8 e1, e2;
-	CHECK(_file.seek(0x49) && read(d1, sizeof(d1)) && _file.seek(0x61)
-	  && readValue(e1) && readValue(e2) && _file.seek(0x65)
-	  && read(d2, sizeof(d2)));
+	CHECK(file.seek(0x49) && read(file, d1, sizeof(d1)) && file.seek(0x61)
+	  && readValue(file, e1) && readValue(file, e2) && file.seek(0x65)
+	  && read(file, d2, sizeof(d2)));
 
 	QByteArray nba(QByteArray(d1, sizeof(d1)) + QByteArray(d2, sizeof(d2)));
 	_name = QString::fromLatin1(nba.constData(), nba.size()-1).trimmed();
@@ -66,7 +68,7 @@ IMG::IMG(const QString &fileName) : _file(fileName)
 	quint64 offset = 0x200;
 	// Skip unused FAT blocks if any
 	while (true) {
-		CHECK(_file.seek(offset) && readValue(flag));
+		CHECK(file.seek(offset) && readValue(file, flag));
 		if (flag)
 			break;
 		offset += 512;
@@ -76,15 +78,17 @@ IMG::IMG(const QString &fileName) : _file(fileName)
 	char name[8], type[3];
 	quint32 size;
 	quint16 part;
-	CHECK(_file.seek(offset + 12) && readValue(size));
+	CHECK(file.seek(offset + 12) && readValue(file, size));
 	offset += 512;
 	int cnt = (size - offset) / 512;
 
 	// Read FAT blocks describing the IMG sub-files
 	for (int i = 0; i < cnt; i++) {
 		quint16 block;
-		CHECK(_file.seek(offset) && readValue(flag) && read(name, sizeof(name))
-		  && read(type, sizeof(type)) && readValue(size) && readValue(part));
+		CHECK(file.seek(offset) && readValue(file, flag)
+		  && read(file, name, sizeof(name))
+		  && read(file, type, sizeof(type)) && readValue(file, size)
+		  && readValue(file, part));
 		SubFile::Type tt = tileType(type);
 
 		QByteArray fn(name, sizeof(name));
@@ -97,16 +101,16 @@ IMG::IMG(const QString &fileName) : _file(fileName)
 			} else
 				tile = *it;
 
-			SubFile *file = part ? tile->file(tt)
+			SubFile *subFile = part ? tile->file(tt)
 			  : tile->addFile(this, tt);
-			CHECK(file);
+			CHECK(subFile);
 
-			_file.seek(offset + 0x20);
+			file.seek(offset + 0x20);
 			for (int i = 0; i < 240; i++) {
-				CHECK(readValue(block));
+				CHECK(readValue(file, block));
 				if (block == 0xFFFF)
 					break;
-				file->addBlock(block);
+				subFile->addBlock(block);
 			}
 		} else if (tt == SubFile::TYP) {
 			SubFile *typ = 0;
@@ -118,9 +122,9 @@ IMG::IMG(const QString &fileName) : _file(fileName)
 				typ = _typ;
 
 			if (typ) {
-				_file.seek(offset + 0x20);
+				file.seek(offset + 0x20);
 				for (int i = 0; i < 240; i++) {
-					CHECK(readValue(block));
+					CHECK(readValue(file, block));
 					if (block == 0xFFFF)
 						break;
 					typ->addBlock(block);
@@ -138,7 +142,7 @@ IMG::IMG(const QString &fileName) : _file(fileName)
 		VectorTile *tile = it.value();
 
 		if (!tile->init()) {
-			qWarning("%s: %s: Invalid map tile", qPrintable(_file.fileName()),
+			qWarning("%s: %s: Invalid map tile", qPrintable(file.fileName()),
 			  qPrintable(it.key()));
 			delete tile;
 			continue;
@@ -178,20 +182,20 @@ IMG::IMG(const QString &fileName) : _file(fileName)
 		_valid = true;
 }
 
-qint64 IMG::read(char *data, qint64 maxSize)
+qint64 IMG::read(QFile &file, char *data, qint64 maxSize)
 {
-	qint64 ret = _file.read(data, maxSize);
+	qint64 ret = file.read(data, maxSize);
 	if (_key)
 		for (int i = 0; i < ret; i++)
 			data[i] ^= _key;
 	return ret;
 }
 
-template<class T> bool IMG::readValue(T &val)
+template<class T> bool IMG::readValue(QFile &file, T &val)
 {
 	T data;
 
-	if (read((char*)&data, sizeof(T)) < (qint64)sizeof(T))
+	if (read(file, (char*)&data, sizeof(T)) < (qint64)sizeof(T))
 		return false;
 
 	val = qFromLittleEndian(data);
@@ -199,11 +203,11 @@ template<class T> bool IMG::readValue(T &val)
 	return true;
 }
 
-bool IMG::readBlock(int blockNum, char *data)
+bool IMG::readBlock(QFile &file, int blockNum, char *data)
 {
-	if (!_file.seek((quint64)blockNum << _blockBits))
+	if (!file.seek((quint64)blockNum << _blockBits))
 		return false;
-	if (read(data, 1ULL<<_blockBits) < (qint64)(1ULL<<_blockBits))
+	if (read(file, data, 1ULL<<_blockBits) < (qint64)(1ULL<<_blockBits))
 		return false;
 
 	return true;

src/map/IMG/img.h

@@ -1,25 +1,26 @@
 #ifndef IMG_H
 #define IMG_H
 
-#include <QFile>
 #include "mapdata.h"
 
+class QFile;
+
 class IMG : public MapData
 {
 public:
 	IMG(const QString &fileName);
 
-	QString fileName() const {return _file.fileName();}
+	const QString &fileName() const {return _fileName;}
 
 private:
 	friend class SubFile;
 
 	unsigned blockBits() const {return _blockBits;}
-	bool readBlock(int blockNum, char *data);
-	qint64 read(char *data, qint64 maxSize);
-	template<class T> bool readValue(T &val);
+	bool readBlock(QFile &file, int blockNum, char *data);
+	qint64 read(QFile &file, char *data, qint64 maxSize);
+	template<class T> bool readValue(QFile &file, T &val);
 
-	QFile _file;
+	QString _fileName;
 	quint8 _key;
 	unsigned _blockBits;
 };

src/map/IMG/lblfile.cpp

@@ -94,20 +94,23 @@ bool LBLFile::load(Handle &hdl, const RGNFile *rgn, Handle &rgnHdl)
 	}
 
 	if (hdrLen >= 0x19A) {
-		quint32 size, flags;
-		if (!(seek(hdl, _gmpOffset + 0x184) && readUInt32(hdl, _imgOffsetsOffset)
-		  && readUInt32(hdl, size) && readUInt16(hdl, _imgOffsetsRecordSize)
+		quint32 offset, recordSize, size, flags;
+		if (!(seek(hdl, _gmpOffset + 0x184) && readUInt32(hdl, offset)
+		  && readUInt32(hdl, size) && readUInt16(hdl, recordSize)
 		  && readUInt32(hdl, flags) && readUInt32(hdl, _imgOffset)
 		  && readUInt32(hdl, _imgSize)))
 			return false;
-		_imgOffsetsCount = size ? size / _imgOffsetsRecordSize : 0;
+		quint32 count = size ? size / recordSize : 0;
 
-		quint32 maxId = _imgOffsetsCount - 1;
+		quint32 maxId = count - 1;
 		_imgOffsetIdSize = 0;
 		do {
 			_imgOffsetIdSize++;
 			maxId = maxId >> 8;
 		} while (maxId != 0);
+
+		if (!loadFiles(hdl, count, offset, recordSize))
+			return false;
 	}
 
 	if (_encoding == 11) {
@@ -301,31 +304,43 @@ Label LBLFile::label(Handle &hdl, quint32 offset, bool poi, bool capitalize) con
 	}
 }
 
-QByteArray LBLFile::readImage(Handle &hdl, quint32 id) const
+bool LBLFile::loadFiles(Handle &hdl, quint32 count, quint32 offset,
+  quint32 recordSize)
 {
-	quint32 offset, nextOffset, size;
+	_rasters.resize(count);
 
-	if (id >= _imgOffsetsCount)
-		return QByteArray();
+	for (quint32 i = 0; i < count; i++) {
+		quint32 currentOffset, nextOffset, size;
 
-	if (!(seek(hdl, _imgOffsetsOffset + id * _imgOffsetsRecordSize)
-	  && readVUInt32(hdl, _imgOffsetsRecordSize, offset)))
-		return QByteArray();
-	if (id == _imgOffsetsCount - 1)
+		if (!(seek(hdl, offset + i * recordSize)
+		  && readVUInt32(hdl, recordSize, currentOffset)))
+			return false;
+		if (i == count - 1)
 			nextOffset = _imgSize;
 		else {
-		if (!readVUInt32(hdl, _imgOffsetsRecordSize, nextOffset))
-			return QByteArray();
+			if (!readVUInt32(hdl, recordSize, nextOffset))
+				return false;
 		}
-	size = nextOffset - offset;
+		size = nextOffset - currentOffset;
 
-	if (!seek(hdl, _imgOffset + offset))
-		return QByteArray();
+		_rasters[i] = File(currentOffset, size);
+	}
+
+	return true;
+}
+
+QImage LBLFile::readImage(Handle &hdl, quint32 id) const
+{
+	if (id >= (quint32)_rasters.size())
+		return QImage();
+
+	if (!seek(hdl, _imgOffset + _rasters.at(id).offset))
+		return QImage();
 	QByteArray ba;
-	ba.resize(size);
-	for (quint32 i = 0; i < size; i++)
+	ba.resize(_rasters.at(id).size);
+	for (int i = 0; i < ba.size(); i++)
 		if (!readUInt8(hdl, *(ba.data() + i)))
-			return QByteArray();
+			return QImage();
 
-	return ba;
+	return QImage::fromData(ba);
 }

src/map/IMG/lblfile.h

@@ -1,6 +1,7 @@
 #ifndef LBLFILE_H
 #define LBLFILE_H
 
+#include <QImage>
 #include "common/textcodec.h"
 #include "subfile.h"
 #include "label.h"
@@ -13,16 +14,16 @@ class LBLFile : public SubFile
 public:
 	LBLFile(IMG *img)
 	  : SubFile(img), _huffmanText(0), _table(0), _offset(0), _size(0),
-	  _poiOffset(0), _poiSize(0), _imgOffsetsCount(0), _imgOffsetIdSize(0),
-	  _poiMultiplier(0), _multiplier(0), _encoding(0) {}
+	  _poiOffset(0), _poiSize(0), _imgOffsetIdSize(0), _poiMultiplier(0),
+	  _multiplier(0), _encoding(0) {}
 	LBLFile(const QString *path)
 	  : SubFile(path), _huffmanText(0), _table(0), _offset(0), _size(0),
-	  _poiOffset(0), _poiSize(0), _imgOffsetsCount(0), _imgOffsetIdSize(0),
-	  _poiMultiplier(0), _multiplier(0), _encoding(0) {}
+	  _poiOffset(0), _poiSize(0), _imgOffsetIdSize(0), _poiMultiplier(0),
+	  _multiplier(0), _encoding(0) {}
 	LBLFile(SubFile *gmp, quint32 offset) : SubFile(gmp, offset),
 	  _huffmanText(0), _table(0), _offset(0), _size(0), _poiOffset(0),
-	  _poiSize(0), _imgOffsetsCount(0), _imgOffsetIdSize(0), _poiMultiplier(0),
-	  _multiplier(0), _encoding(0) {}
+	  _poiSize(0), _imgOffsetIdSize(0), _poiMultiplier(0), _multiplier(0),
+	  _encoding(0) {}
 	~LBLFile();
 
 	bool load(Handle &hdl, const RGNFile *rgn, Handle &rgnHdl);
@@ -32,13 +33,23 @@ public:
 	  bool capitalize = true) const;
 
 	quint8 imageIdSize() const {return _imgOffsetIdSize;}
-	QByteArray readImage(Handle &hdl, quint32 id) const;
+	QImage readImage(Handle &hdl, quint32 id) const;
 
 private:
+	struct File {
+		File() : offset(0), size(0) {}
+		File(quint32 offset, quint32 size) : offset(offset), size(size) {}
+
+		quint32 offset;
+		quint32 size;
+	};
+
 	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;
+	bool loadFiles(Handle &hdl, quint32 count, quint32 offset,
+	  quint32 recordSize);
 
 	HuffmanText *_huffmanText;
 	quint32 *_table;
@@ -47,15 +58,14 @@ private:
 	quint32 _size;
 	quint32 _poiOffset;
 	quint32 _poiSize;
-	quint32 _imgOffsetsOffset;
-	quint32 _imgOffsetsCount;
-	quint32 _imgOffsetsRecordSize;
 	quint32 _imgOffset;
 	quint32 _imgSize;
 	quint8 _imgOffsetIdSize;
 	quint8 _poiMultiplier;
 	quint8 _multiplier;
 	quint8 _encoding;
+
+	QVector<File> _rasters;
 };
 
 #endif // LBLFILE_H

src/map/IMG/mapdata.h

@@ -60,7 +60,7 @@ public:
 	void load();
 	void clear();
 
-	virtual QString fileName() const = 0;
+	virtual const QString &fileName() const = 0;
 
 	bool isValid() const {return _valid;}
 	QString errorString() const {return _errorString;}

src/map/IMG/raster.h

@@ -2,34 +2,37 @@
 #define RASTER_H
 
 #include <QRect>
-#include <QByteArray>
 #include <QDebug>
 #include "common/rectc.h"
 #include "common/garmin.h"
 
+class LBLFile;
+
 class Raster {
 public:
-	Raster() {}
-	Raster(const QByteArray &img, const QRect &rect) : _img(img), _rect(rect) {}
+	Raster() : _lbl(0) {}
+	Raster(const LBLFile *lbl, quint32 id, const QRect &rect)
+	  : _lbl(lbl), _id(id), _rect(rect) {}
 
-	const QByteArray &img() const {return _img;}
+	const LBLFile *lbl() const {return _lbl;}
+	quint32 id() const {return _id;}
 	const RectC rect() const
 	{
 		return RectC(Coordinates(toWGS32(_rect.left()), toWGS32(_rect.top())),
 		  Coordinates(toWGS32(_rect.right()), toWGS32(_rect.bottom())));
 	}
-	bool isValid() const {return !_img.isNull();}
+	bool isValid() const {return (_lbl != 0);}
 
 private:
-	QByteArray _img;
+	const LBLFile *_lbl;
+	quint32 _id;
 	QRect _rect;
 };
 
 #ifndef QT_NO_DEBUG
 inline QDebug operator<<(QDebug dbg, const Raster &raster)
 {
-	dbg.nospace() << "Raster(" << raster.img().size() << ", " << raster.rect()
-	  << ")";
+	dbg.nospace() << "Raster(" << raster.rect() << ")";
 	return dbg.space();
 }
 #endif // QT_NO_DEBUG

src/map/IMG/rastertile.cpp

@@ -5,6 +5,7 @@
 #include "textpointitem.h"
 #include "bitmapline.h"
 #include "style.h"
+#include "lblfile.h"
 #include "rastertile.h"
 
 
@@ -224,8 +225,11 @@ void RasterTile::drawPolygons(QPainter *painter)
 				QPointF br(_map->ll2xy(r.bottomRight()));
 				QSize size(QRectF(tl, br).toRect().size());
 
-				painter->drawImage(tl, QImage::fromData(poly.raster.img()).
-				  scaled(size, Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
+				SubFile::Handle hdl(poly.raster.lbl());
+				QImage img(poly.raster.lbl()->readImage(hdl, poly.raster.id()));
+
+				painter->drawImage(tl, img.scaled(size, Qt::IgnoreAspectRatio,
+				  Qt::SmoothTransformation));
 
 				//painter->setPen(Qt::blue);
 				//painter->setBrush(Qt::NoBrush);

src/map/IMG/rgnfile.cpp

@@ -30,7 +30,7 @@ RGNFile::~RGNFile()
 }
 
 bool RGNFile::readClassFields(Handle &hdl, SegmentType segmentType,
-  MapData::Poly *poly, const LBLFile *lbl, Handle *lblHdl) const
+  MapData::Poly *poly, const LBLFile *lbl) const
 {
 	quint8 flags;
 	quint32 rs;
@@ -67,8 +67,8 @@ bool RGNFile::readClassFields(Handle &hdl, SegmentType segmentType,
 		  && readUInt32(hdl, bottom) && readUInt32(hdl, left)))
 			return false;
 
-		poly->raster = Raster(lbl->readImage(*lblHdl, id),
-		  QRect(QPoint(left, top), QPoint(right, bottom)));
+		poly->raster = Raster(lbl, id, QRect(QPoint(left, top), QPoint(right,
+		  bottom)));
 
 		rs -= lbl->imageIdSize() + 16;
 	}
@@ -336,8 +336,7 @@ bool RGNFile::extPolyObjects(Handle &hdl, const SubDiv *subdiv, quint32 shift,
 
 		if (subtype & 0x20 && !readUInt24(hdl, labelPtr))
 			return false;
-		if (subtype & 0x80 && !readClassFields(hdl, segmentType, &poly, lbl,
-		  &lblHdl))
+		if (subtype & 0x80 && !readClassFields(hdl, segmentType, &poly, lbl))
 			return false;
 		if (subtype & 0x40 && !skipLclFields(hdl, segmentType == Line
 		  ? _linesLclFlags : _polygonsLclFlags))

src/map/IMG/rgnfile.h

@@ -61,7 +61,7 @@ private:
 	QMap<SegmentType, SubDiv::Segment> segments(Handle &hdl, SubDiv *subdiv)
 	  const;
 	bool readClassFields(Handle &hdl, SegmentType segmentType,
-	  MapData::Poly *poly = 0, const LBLFile *lbl = 0, Handle *lblHdl = 0) const;
+	  MapData::Poly *poly = 0, const LBLFile *lbl = 0) const;
 	bool skipLclFields(Handle &hdl, const quint32 flags[3]) const;
 	bool skipGblFields(Handle &hdl, quint32 flags) const;
 

src/map/IMG/subfile.cpp

@@ -7,39 +7,38 @@
 
 bool SubFile::seek(Handle &handle, quint32 pos) const
 {
-	if (handle._file) {
-		int blockNum = pos >> BLOCK_BITS;
-
-		if (handle._blockNum != blockNum) {
-			if (!handle._file->seek((quint64)blockNum << BLOCK_BITS))
-				return false;
-			if (handle._file->read(handle._data.data(), (1<<BLOCK_BITS)) < 0)
-				return false;
-			handle._blockNum = blockNum;
-		}
-
-		handle._blockPos = mod2n(pos, 1U<<BLOCK_BITS);
-		handle._pos = pos;
-
-		return true;
-	} else {
+	if (_img) {
 		quint32 blockBits = _img->blockBits();
 		int blockNum = pos >> blockBits;
 
 		if (handle._blockNum != blockNum) {
 			if (blockNum >= _blocks->size())
 				return false;
-			if (!_img->readBlock(_blocks->at(blockNum), handle._data.data()))
+			if (!_img->readBlock(handle._file, _blocks->at(blockNum),
+			  handle._data.data()))
 				return false;
 			handle._blockNum = blockNum;
 		}
 
 		handle._blockPos = mod2n(pos, 1U<<blockBits);
 		handle._pos = pos;
+	} else {
+		int blockNum = pos >> BLOCK_BITS;
+
+		if (handle._blockNum != blockNum) {
+			if (!handle._file.seek((quint64)blockNum << BLOCK_BITS))
+				return false;
+			if (handle._file.read(handle._data.data(), (1<<BLOCK_BITS)) < 0)
+				return false;
+			handle._blockNum = blockNum;
+		}
+
+		handle._blockPos = mod2n(pos, 1U<<BLOCK_BITS);
+		handle._pos = pos;
+	}
 
 	return true;
 }
-}
 
 bool SubFile::readVUInt32(Handle &hdl, quint32 &val) const
 {

src/map/IMG/subfile.h

@@ -17,21 +17,26 @@ public:
 	{
 	public:
 		Handle(const SubFile *subFile)
-		  : _file(0), _blockNum(-1), _blockPos(-1), _pos(-1)
+		  : _blockNum(-1), _blockPos(-1), _pos(-1)
 		{
-			if (subFile && subFile->_path) {
-				_file = new QFile(*(subFile->_path));
-				_file->open(QIODevice::ReadOnly);
+			if (!subFile)
+				return;
+
+			if (subFile->_path) {
+				_file.setFileName(*(subFile->_path));
 				_data.resize(1U<<BLOCK_BITS);
-			} else if (subFile)
+			} else {
+				_file.setFileName(subFile->_img->fileName());
 				_data.resize(1U<<subFile->_img->blockBits());
 			}
-		~Handle() {delete _file;}
+
+			_file.open(QIODevice::ReadOnly);
+		}
 
 	private:
 		friend class SubFile;
 
-		QFile *_file;
+		QFile _file;
 		QByteArray _data;
 		int _blockNum;
 		int _blockPos;