Rev 2132 |
Blame |
Compare with Previous |
Last modification |
View Log
| RSS feed
/*
* Copyright (C) 2007 Steve Ratcliffe
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*
* Author: Steve Ratcliffe
* Create date: Dec 14, 2007
*/
package uk.me.parabola.imgfmt.app.typ;
import uk.me.parabola.imgfmt.app.CommonHeader;
import uk.me.parabola.imgfmt.app.ImgFileReader;
import uk.me.parabola.imgfmt.app.ImgFileWriter;
import uk.me.parabola.imgfmt.app.Section;
/**
* The header for the TYP file.
*
* @author Thomas Lußnig
*/
public class TYPHeader extends CommonHeader {
public static final int HEADER_LEN = 0x9c; // 0x6e;
private char familyId;
private char productId;
private char codePage;
private final Section pointData = new Section();
private final Section lineData = new Section(pointData);
private final Section polygonData = new Section(lineData);
private final Section pointIndex = new Section(polygonData, 2);
private final Section lineIndex = new Section(pointIndex, 2);
private final Section polygonIndex = new Section(lineIndex, 2);
private final Section shapeStacking = new Section(polygonIndex, 5);
private final Section iconData = new Section(polygonIndex);
private final Section iconIndex = new Section(iconData, 3);
private final Section labels = new Section(iconIndex);
private final Section stringIndex = new Section(labels);
private final Section typeIndex = new Section(stringIndex);
public TYPHeader() {
super(HEADER_LEN, "GARMIN TYP");
}
/**
* Read the rest of the header. Specific to the given file. It is guaranteed
* that the file position will be set to the correct place before this is
* called.
*
* @param reader The header is read from here.
*/
protected void readFileHeader(ImgFileReader reader) {
// Reset position for the real header reading code.
reader.position(COMMON_HEADER_LEN);
codePage = (char) reader.get2u(); // 1252
pointData.setPosition(reader.get4());
pointData.setSize(reader.get4());
lineData.setPosition(reader.get4());
lineData.setSize(reader.get4());
polygonData.setPosition(reader.get4());
polygonData.setSize(reader.get4());
familyId = (char) reader.get2u();
productId = (char) reader.get2u();
pointIndex.setPosition(reader.get4());
pointIndex.setItemSize(reader.get2u());
pointIndex.setSize(reader.get4());
lineIndex.setPosition(reader.get4());
lineIndex.setItemSize(reader.get2u());
lineIndex.setSize(reader.get4());
polygonIndex.setPosition(reader.get4());
polygonIndex.setItemSize(reader.get2u());
polygonIndex.setSize(reader.get4());
shapeStacking.setPosition(reader.get4());
shapeStacking.setItemSize(reader.get2u());
shapeStacking.setSize(reader.get4());
}
/**
* Write the rest of the header. It is guaranteed that the writer will be set
* to the correct position before calling.
*
* This header appears to have a different layout to most other headers.
*
* @param writer The header is written here.
*/
protected void writeFileHeader(ImgFileWriter writer) {
writer.put2u(codePage);
pointData.writeSectionInfo(writer);
lineData.writeSectionInfo(writer);
polygonData.writeSectionInfo(writer);
writer.put2u(familyId);
writer.put2u(productId);
// Can't use Section.writeSectionInfo here as there is an unusual layout.
writeSectionInfo(writer, pointIndex);
writeSectionInfo(writer, lineIndex);
writeSectionInfo(writer, polygonIndex);
writeSectionInfo(writer, shapeStacking);
if (getHeaderLength() > 0x5b) {
writeSectionInfo(writer, iconIndex);
writer.put1u(0x13);
iconData.writeSectionInfo(writer);
writer.put4(0);
}
if (getHeaderLength() > 0x6e) {
labels.writeSectionInfo(writer);
// not known, guessing. Different layout to other files.
writer.put4(stringIndex.getItemSize());
writer.put4(0x1b);
writer.put4(stringIndex.getPosition());
writer.put4(stringIndex.getSize());
writer.put4(typeIndex.getItemSize());
writer.put4(0x1b);
writer.put4(typeIndex.getPosition());
writer.put4(typeIndex.getSize());
writer.put2u(0);
}
}
/**
* There is an unusual layout of the section pointers in the TYP file for the sections
* that have an item size.
*/
private void writeSectionInfo(ImgFileWriter writer, Section section) {
writer.put4(section.getPosition());
writer.put2u(section.getItemSize());
writer.put4(section.getSize());
}
void setCodePage(char codePage) {
this.codePage = codePage;
}
Section getPointData() {
return pointData;
}
void setFamilyId(char familyId) {
this.familyId = familyId;
}
void setProductId(char productId) {
this.productId = productId;
}
Section getPointIndex() {
return pointIndex;
}
Section getShapeStacking() {
return shapeStacking;
}
public Section getPolygonData() {
return polygonData;
}
public Section getPolygonIndex() {
return polygonIndex;
}
public Section getLineData() {
return lineData;
}
public Section getLineIndex() {
return lineIndex;
}
public Section getIconData() {
return iconData;
}
public Section getIconIndex() {
return iconIndex;
}
public Section getLabels() {
return labels;
}
public Section getStringIndex() {
return stringIndex;
}
public Section getTypeIndex() {
return typeIndex;
}
}