374 lines
11 KiB
C++
374 lines
11 KiB
C++
// ==============================================================
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// This file is part of Glest Shared Library (www.glest.org)
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//
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// Copyright (C) 2001-2010 Martiño Figueroa and others
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//
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// You can redistribute this code and/or modify it under
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// the terms of the GNU General Public License as published
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// by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version
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// ==============================================================
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#include "TGAReader.h"
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#include "data_types.h"
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#include "pixmap.h"
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#include <stdexcept>
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#include <iostream>
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#include "util.h"
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#include "leak_dumper.h"
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using std::runtime_error;
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namespace Shared{ namespace Graphics{
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#pragma pack(push, 1)
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/**Copied from pixmap.cpp*/
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// =====================================================
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// Information for reading the targa-file
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// =====================================================
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struct TargaFileHeader{
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int8 idLength;
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int8 colourMapType;
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int8 dataTypeCode;
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int16 colourMapOrigin;
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int16 colourMapLength;
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int8 colourMapDepth;
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int16 xOrigin;
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int16 yOrigin;
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int16 width;
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int16 height;
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int8 bitsPerPixel;
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int8 imageDescriptor;
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};
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#pragma pack(pop)
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static const int tgaUncompressedRgb= 2;
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static const int tgaUncompressedBw= 3;
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// =====================================================
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// class TGAReader
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// =====================================================
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/**Get Extension array, initialised*/
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//static inline const string* getExtensionStrings() {
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static inline std::vector<string> getExtensionStrings() {
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//static const string extensions[] = {"tga", ""};
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static std::vector<string> extensions;
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if(extensions.empty() == true) {
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extensions.push_back("tga");
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}
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return extensions;
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}
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TGAReader3D::TGAReader3D(): FileReader<Pixmap3D>(getExtensionStrings()) {}
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Pixmap3D* TGAReader3D::read(ifstream& in, const string& path, Pixmap3D* ret) const {
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//printf("In [%s] line: %d\n",__FILE__,__LINE__);
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// try {
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if(GlobalStaticFlags::getIsNonGraphicalModeEnabled() == true) {
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throw megaglest_runtime_error("Loading graphics in headless server mode not allowed!");
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}
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//read header
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TargaFileHeader fileHeader;
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in.read((char*)&fileHeader, sizeof(TargaFileHeader));
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static bool bigEndianSystem = Shared::PlatformByteOrder::isBigEndian();
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if(bigEndianSystem == true) {
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fileHeader.bitsPerPixel = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.bitsPerPixel);
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fileHeader.colourMapDepth = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.colourMapDepth);
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fileHeader.colourMapLength = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.colourMapDepth);
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fileHeader.colourMapOrigin = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.colourMapOrigin);
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fileHeader.colourMapType = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.colourMapType);
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fileHeader.dataTypeCode = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.dataTypeCode);
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fileHeader.height = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.height);
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fileHeader.idLength = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.idLength);
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fileHeader.imageDescriptor = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.imageDescriptor);
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fileHeader.width = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.width);
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}
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if (!in.good()) {
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throw megaglest_runtime_error(path + " could not be read",true);
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}
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//check that we can load this tga file
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if(fileHeader.idLength!=0){
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throw megaglest_runtime_error(path + ": id field is not 0",true);
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}
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if(fileHeader.dataTypeCode!=tgaUncompressedRgb && fileHeader.dataTypeCode!=tgaUncompressedBw){
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throw megaglest_runtime_error(path + ": only uncompressed BW and RGB targa images are supported",true);
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}
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//check bits per pixel
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if(fileHeader.bitsPerPixel!=8 && fileHeader.bitsPerPixel!=24 && fileHeader.bitsPerPixel!=32){
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throw megaglest_runtime_error(path + ": only 8, 24 and 32 bit targa images are supported",true);
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}
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const int h = fileHeader.height;
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const int w = fileHeader.width;
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const int d = ret->getD();
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const int slice = ret->getSlice();
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const int fileComponents= fileHeader.bitsPerPixel/8;
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const int picComponents = (ret->getComponents()==-1)?fileComponents:ret->getComponents();
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//std::cout << "TGA-Components: Pic: " << picComponents << " old: " << (ret->getComponents()) << " File: " << fileComponents << " slice:" << ret->getSlice() << std::endl;
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if(ret->getPixels() == NULL){
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ret->init(w,h,d, picComponents);
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}
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uint8* pixels = ret->getPixels();
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if(slice > 0) {
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pixels = &pixels[slice*w*h*picComponents];
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}
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//read file
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for(int i=0; i<h*w*picComponents; i+=picComponents){
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uint8 r=0, g=0, b=0, a=0, l=0;
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if(fileComponents==1){
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in.read((char*)&l,1);
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if(bigEndianSystem == true) {
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l = Shared::PlatformByteOrder::fromCommonEndian(l);
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}
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r= l;
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g= l;
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b= l;
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a= 255;
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}
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else{
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in.read((char*)&b, 1);
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if(bigEndianSystem == true) {
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b = Shared::PlatformByteOrder::fromCommonEndian(b);
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}
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in.read((char*)&g, 1);
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if(bigEndianSystem == true) {
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g = Shared::PlatformByteOrder::fromCommonEndian(g);
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}
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in.read((char*)&r, 1);
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if(bigEndianSystem == true) {
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r = Shared::PlatformByteOrder::fromCommonEndian(r);
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}
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if(fileComponents==4){
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in.read((char*)&a, 1);
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if(bigEndianSystem == true) {
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a = Shared::PlatformByteOrder::fromCommonEndian(a);
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}
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} else {
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a= 255;
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}
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l= (r+g+b)/3;
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}
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//if (!in.good()) {
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// return NULL;
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//}
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switch(picComponents){
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case 1:
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pixels[i]= l;
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break;
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case 3:
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pixels[i]= r;
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pixels[i+1]= g;
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pixels[i+2]= b;
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break;
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case 4:
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pixels[i]= r;
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pixels[i+1]= g;
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pixels[i+2]= b;
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pixels[i+3]= a;
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break;
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}
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}
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/*for(int i = 0; i < w*h*picComponents; ++i) {
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if (i%39 == 0) std::cout << std::endl;
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int first = pixels[i]/16;
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if (first < 10)
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std:: cout << first;
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else
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std::cout << (char)('A'+(first-10));
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first = pixels[i]%16;
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if (first < 10)
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std:: cout << first;
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else
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std::cout << (char)('A'+(first-10));
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std::cout << " ";
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}*/
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// }
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// catch(exception& ex) {
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// char szBuf[8096]="";
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// snprintf(szBuf,8096,"Error in [%s] on line: %d msg: %s\n",extractFileFromDirectoryPath(__FILE__).c_str(),__LINE__,ex.what());
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// throw megaglest_runtime_error(szBuf);
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// }
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return ret;
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}
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TGAReader::TGAReader(): FileReader<Pixmap2D>(getExtensionStrings()) {}
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Pixmap2D* TGAReader::read(ifstream& in, const string& path, Pixmap2D* ret) const {
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//printf("In [%s] line: %d\n",__FILE__,__LINE__);
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//try {
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//read header
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TargaFileHeader fileHeader;
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in.read((char*)&fileHeader, sizeof(TargaFileHeader));
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static bool bigEndianSystem = Shared::PlatformByteOrder::isBigEndian();
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if(bigEndianSystem == true) {
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fileHeader.bitsPerPixel = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.bitsPerPixel);
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fileHeader.colourMapDepth = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.colourMapDepth);
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fileHeader.colourMapLength = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.colourMapDepth);
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fileHeader.colourMapOrigin = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.colourMapOrigin);
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fileHeader.colourMapType = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.colourMapType);
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fileHeader.dataTypeCode = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.dataTypeCode);
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fileHeader.height = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.height);
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fileHeader.idLength = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.idLength);
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fileHeader.imageDescriptor = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.imageDescriptor);
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fileHeader.width = Shared::PlatformByteOrder::fromCommonEndian(fileHeader.width);
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}
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if (!in.good()) {
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throw megaglest_runtime_error(path + " could not be read",true);
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}
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//check that we can load this tga file
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if(fileHeader.idLength!=0){
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throw megaglest_runtime_error(path + ": id field is not 0",true);
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}
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if(fileHeader.dataTypeCode!=tgaUncompressedRgb && fileHeader.dataTypeCode!=tgaUncompressedBw){
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throw megaglest_runtime_error(path + ": only uncompressed BW and RGB targa images are supported",true);
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}
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//check bits per pixel
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if(fileHeader.bitsPerPixel!=8 && fileHeader.bitsPerPixel!=24 && fileHeader.bitsPerPixel!=32){
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throw megaglest_runtime_error(path + ": only 8, 24 and 32 bit targa images are supported",true);
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}
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const int h = fileHeader.height;
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const int w = fileHeader.width;
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const int fileComponents= fileHeader.bitsPerPixel/8;
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const int picComponents = (ret->getComponents()==-1)?fileComponents:ret->getComponents();
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//std::cout << "TGA-Components: Pic: " << picComponents << " old: " << (ret->getComponents()) << " File: " << fileComponents << std::endl;
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ret->init(w,h,picComponents);
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uint8* pixels = ret->getPixels();
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//read file
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for(int i = 0; i < h*w*picComponents; i += picComponents) {
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uint8 r=0, g=0, b=0, a=0, l=0;
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if(fileComponents == 1) {
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in.read((char*)&l,1);
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if(bigEndianSystem == true) {
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l = Shared::PlatformByteOrder::fromCommonEndian(l);
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}
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r= l;
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g= l;
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b= l;
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a= 255;
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}
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else {
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uint8 bgra[4] = {0,0,0,0};
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in.read((char*)&bgra[0], fileComponents);
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b = bgra[0];
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g = bgra[1];
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r = bgra[2];
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a= 255;
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if(fileComponents == 4) {
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a = bgra[3];
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}
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if(bigEndianSystem == true) {
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b = Shared::PlatformByteOrder::fromCommonEndian(b);
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g = Shared::PlatformByteOrder::fromCommonEndian(g);
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r = Shared::PlatformByteOrder::fromCommonEndian(r);
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if(fileComponents == 4) {
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a = Shared::PlatformByteOrder::fromCommonEndian(a);
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}
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}
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// in.read((char*)&b, 1);
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// if(bigEndianSystem == true) {
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// b = Shared::PlatformByteOrder::fromCommonEndian(b);
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// }
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//
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// in.read((char*)&g, 1);
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// if(bigEndianSystem == true) {
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// g = Shared::PlatformByteOrder::fromCommonEndian(g);
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// }
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//
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// in.read((char*)&r, 1);
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// if(bigEndianSystem == true) {
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// r = Shared::PlatformByteOrder::fromCommonEndian(r);
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// }
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//
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// if(fileComponents==4){
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// in.read((char*)&a, 1);
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// if(bigEndianSystem == true) {
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// a = Shared::PlatformByteOrder::fromCommonEndian(a);
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// }
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//
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// }
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// else {
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// a= 255;
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// }
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l = (r+g+b) / 3;
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}
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if (!in.good()) {
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return NULL;
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}
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switch(picComponents) {
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case 1:
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pixels[i]= l;
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break;
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case 3:
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pixels[i]= r;
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pixels[i+1]= g;
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pixels[i+2]= b;
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break;
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case 4:
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pixels[i]= r;
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pixels[i+1]= g;
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pixels[i+2]= b;
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pixels[i+3]= a;
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break;
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}
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}
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/*for(int i = 0; i < w*h*picComponents; ++i) {
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if (i%39 == 0) std::cout << std::endl;
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int first = pixels[i]/16;
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if (first < 10)
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std:: cout << first;
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else
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std::cout << (char)('A'+(first-10));
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first = pixels[i]%16;
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if (first < 10)
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std:: cout << first;
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else
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std::cout << (char)('A'+(first-10));
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std::cout << " ";
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}*/
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// }
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// catch(exception& ex) {
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// //printf("In [%s] line: %d msf [%s]\n",__FILE__,__LINE__,ex.what());
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// //abort();
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// char szBuf[8096]="";
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// snprintf(szBuf,8096,"Error in [%s] on line: %d msg: %s\n",extractFileFromDirectoryPath(__FILE__).c_str(),__LINE__,ex.what());
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// throw megaglest_runtime_error(szBuf);
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// }
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//printf("In [%s] line: %d\n",__FILE__,__LINE__);
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return ret;
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}
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}} //end namespace
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