206 lines
3.5 KiB
C++
206 lines
3.5 KiB
C++
//
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// OpenFlight® loader for OpenSceneGraph
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//
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// Copyright (C) 2005-2006 Brede Johansen
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//
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#include "DataInputStream.h"
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#include <osg/Endian>
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#include <osg/Notify>
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using namespace flt;
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DataInputStream::DataInputStream(std::streambuf* sb):
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std::istream(sb)
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{
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_byteswap = osg::getCpuByteOrder() == osg::LittleEndian;
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}
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int8 DataInputStream::readInt8(int8 def)
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{
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int8 d=def;
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vread((char*)&d, sizeof(int8));
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return d;
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}
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uint8 DataInputStream::readUInt8(uint8 def)
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{
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uint8 d=def;
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vread((char*)&d, sizeof(uint8));
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return d;
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}
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int16 DataInputStream::readInt16(int16 def)
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{
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int16 d=def;
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vread((char*)&d, sizeof(int16));
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if (_byteswap && good())
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osg::swapBytes2((char *)&d);
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return d;
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}
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uint16 DataInputStream::readUInt16(uint16 def)
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{
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uint16 d=def;
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vread((char*)&d, sizeof(uint16));
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if (_byteswap && good())
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osg::swapBytes2((char *)&d);
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return d;
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}
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int32 DataInputStream::readInt32(int32 def)
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{
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int32 d=def;
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vread((char*)&d, sizeof(int32));
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if (_byteswap && good())
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osg::swapBytes4((char *)&d);
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return d;
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}
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uint32 DataInputStream::readUInt32(uint32 def)
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{
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uint32 d=def;
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vread((char*)&d, sizeof(uint32));
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if (_byteswap && good())
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osg::swapBytes4((char *)&d);
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return d;
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}
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float32 DataInputStream::readFloat32(float32 def)
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{
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float32 d=def;
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vread((char*)&d, sizeof(float32));
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if (_byteswap && good())
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osg::swapBytes4((char*)&d);
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return d;
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}
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float64 DataInputStream::readFloat64(float64 def)
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{
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float64 d=def;
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vread((char*)&d, sizeof(float64));
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if (_byteswap && good())
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osg::swapBytes8((char*)&d);
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return d;
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}
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void DataInputStream::readCharArray(char* data, int size)
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{
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vread(data,size);
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}
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std::string DataInputStream::readString(int size)
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{
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char* buf = new char[size+1];
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vread(buf,size);
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buf[size] = '\0';
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std::string str = buf;
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delete [] buf;
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return str;
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}
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osg::Vec4f DataInputStream::readColor32()
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{
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uint8 alpha = readUInt8();
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uint8 blue = readUInt8();
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uint8 green = readUInt8();
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uint8 red = readUInt8();
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osg::Vec4f color((float)red/255,(float)green/255,(float)blue/255,(float)alpha/255);
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return color;
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}
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osg::Vec2f DataInputStream::readVec2f()
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{
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float32 x = readFloat32();
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float32 y = readFloat32();
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osg::Vec2f vec(x,y);
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return vec;
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}
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osg::Vec3f DataInputStream::readVec3f()
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{
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float32 x = readFloat32();
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float32 y = readFloat32();
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float32 z = readFloat32();
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osg::Vec3f vec(x,y,z);
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return vec;
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}
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osg::Vec4f DataInputStream::readVec4f()
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{
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float32 x = readFloat32();
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float32 y = readFloat32();
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float32 z = readFloat32();
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float32 w = readFloat32();
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osg::Vec4f vec(x,y,z,w);
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return vec;
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}
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osg::Vec3d DataInputStream::readVec3d()
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{
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float64 x = readFloat64();
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float64 y = readFloat64();
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float64 z = readFloat64();
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osg::Vec3d vec(x,y,z);
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return vec;
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}
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int16 DataInputStream::peekInt16()
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{
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// Get current read position in stream.
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std::istream::pos_type pos = tellg();
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int16 value = readInt16();
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// Restore position
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seekg(pos, std::ios_base::beg);
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return value;
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}
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std::istream& DataInputStream::forward(std::istream::off_type off)
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{
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return vforward(off);
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}
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std::istream& DataInputStream::vread(char_type *str, std::streamsize count)
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{
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return read(str,count);
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}
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std::istream& DataInputStream::vforward(std::istream::off_type off)
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{
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return seekg(off, std::ios_base::cur);
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}
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