From 384539f7cc9feaa7ef7cee385cce472c6966c843 Mon Sep 17 00:00:00 2001 From: manuel Date: Mon, 27 Apr 2009 00:24:16 +0200 Subject: Adding ue1 --- ue1/imgsynth/cbitmap.cpp | 208 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 208 insertions(+) create mode 100644 ue1/imgsynth/cbitmap.cpp (limited to 'ue1/imgsynth/cbitmap.cpp') diff --git a/ue1/imgsynth/cbitmap.cpp b/ue1/imgsynth/cbitmap.cpp new file mode 100644 index 0000000..0205f0b --- /dev/null +++ b/ue1/imgsynth/cbitmap.cpp @@ -0,0 +1,208 @@ +/** + * @module cbitmap + * @author Manuel Mausz, 0728348 + * @brief Implementation of CFile handling Windows Bitmaps. + * @date 17.04.2009 + */ + +#include +#include +#ifdef DEBUG +# include +#endif +#include "cbitmap.h" +#include "cpixelformat_24.h" + +using namespace std; + +CBitmap::~CBitmap() +{ + if (m_pixeldata != NULL) + delete[] m_pixeldata; + m_pixeldata = NULL; + + if (m_pixelformat != NULL) + delete m_pixelformat; + m_pixelformat = NULL; +} + +/*----------------------------------------------------------------------------*/ + +void CBitmap::read(std::ifstream& in) +{ + /* read and check file header */ + in.read(reinterpret_cast(&m_fileheader), sizeof(m_fileheader)); + + if (m_fileheader.bfType[0] != 'B' || m_fileheader.bfType[1] != 'M') + throw FileError("Imagefile has invalid Bitmap header."); + /* bfSize is unreliable (http://de.wikipedia.org/wiki/Windows_Bitmap) */ + if (m_fileheader.bfSize < 0) + throw FileError("Bitmap filesize is less than zero?"); + + /* read and check info header */ + in.read(reinterpret_cast(&m_infoheader), sizeof(m_infoheader)); + + if (m_infoheader.biSize != 40) + throw FileError("Bitmap info header size is invalid."); + if (m_infoheader.biPlanes != 1) + throw FileError("Bitmap color planes is not set to 1."); + if (m_infoheader.biCompression != 0) + throw FileError("Bitmap compression is set but not supported."); + if (m_infoheader.biSizeImage < 0) + throw FileError("Bitmap image size is less than zero?"); + if (m_infoheader.biClrUsed != 0 || m_infoheader.biClrImportant != 0) + throw FileError("Bitmap colortable is used but not supported."); + + /* currently only 24bit */ + if (m_infoheader.biBitCount != 24) + throw FileError("Bitmap bitcount is not supported."); + + /* read pixel data using separate class */ + if (m_infoheader.biSizeImage > 0) + { + if (m_pixeldata != NULL) + delete[] m_pixeldata; + m_pixeldata = new uint8_t[m_infoheader.biSizeImage]; + in.read(reinterpret_cast(m_pixeldata), m_infoheader.biSizeImage); + } + + /* create pixelformat instance */ + if (m_pixelformat != NULL) + delete m_pixelformat; + m_pixelformat = NULL; + if (m_infoheader.biBitCount == 24) + m_pixelformat = new CPixelFormat_24(this); +} + +/*----------------------------------------------------------------------------*/ + +void CBitmap::write(std::ofstream& out) +{ + /* set header values */ + m_fileheader.bfSize = m_infoheader.biSizeImage + sizeof(m_infoheader) + sizeof(m_fileheader); + + /* write file header */ + out.write(reinterpret_cast(&m_fileheader), sizeof(m_fileheader)); + + /* write info header */ + out.write(reinterpret_cast(&m_infoheader), sizeof(m_infoheader)); + + /* write pixel data */ + if (m_pixeldata != NULL) + out.write(reinterpret_cast(m_pixeldata), m_infoheader.biSizeImage); +} + +/*----------------------------------------------------------------------------*/ + +void CBitmap::callFunc(const std::string& func, const std::list& params) +{ + if (func.empty()) + throw FileError("Function name is empty."); + + if (func == "fillrect") + fillrect(params); + else + throw FileError("Unknown function '" + func + "'."); +} + +/*----------------------------------------------------------------------------*/ + +void CBitmap::fillrect(std::list params) +{ + /* check prerequirements */ + if (params.size() != 7) + throw FileError("Invalid number of function parameters (must be 7)."); + + /* convert parameters */ + uint32_t pparams[7]; + int i = 0; + try + { + for(i = 0; i < 7; i++) + { + pparams[i] = boost::lexical_cast(params.front()); + params.pop_front(); + } + } + catch(boost::bad_lexical_cast& ex) + { + throw FileError("Invalid parameter (" + params.front() + ")."); + } + + /* width and height can be negativ */ + uint32_t width = static_cast(abs(m_infoheader.biWidth)); + uint32_t height = static_cast(abs(m_infoheader.biHeight)); + + /* check parameter values are in range */ + if (pparams[0] < 0 || pparams[0] > width + || pparams[1] < 0 || pparams[1] > height) + throw FileError("At least one x/y-parameter is out of range."); + + if (pparams[2] < 0 || pparams[2] + pparams[0] > width + || pparams[3] < 0 || pparams[3] + pparams[1] > height) + throw FileError("At least one w/h-parameter is out of range."); + + if (pparams[4] < 0 || pparams[4] > 255 + || pparams[5] < 0 || pparams[5] > 255 + || pparams[6] < 0 || pparams[6] > 255) + throw FileError("At least one pixel color parameter is out of range."); + + /* call setPixel for every pixel in the rectangel */ + if (m_pixeldata != NULL && m_pixelformat != NULL) + { + for(uint32_t i = pparams[0]; i < pparams[2] + pparams[0]; i++) + { + for(uint32_t j = pparams[1]; j < pparams[3] + pparams[1]; j++) + { + try + { + m_pixelformat->setPixel(&pparams[4], i, j); + } + catch(CPixelFormat::PixelFormatError& ex) + { + stringstream errstr; + errstr << "Can't set pixel (pos=" << i << "," << j << " col=" + << pparams[4] << "," << pparams[5] << "," << pparams[6] << "): " + << ex.what(); + throw FileError(errstr.str()); + } + } + } + } +} + +/*----------------------------------------------------------------------------*/ + +#ifdef DEBUG +void CBitmap::dump(std::ostream& out) +{ + out + << "Bitmap File Header:" << endl + << " bfType=" << m_fileheader.bfType[0] << m_fileheader.bfType[1] + << ", bfSize=" << m_fileheader.bfSize + << ", bfReserved=" << m_fileheader.bfReserved + << ", bfOffBits=" << m_fileheader.bfOffBits + << endl; + + out + << "Bitmap Info Header:" << endl + << " biSize=" << m_infoheader.biSize + << ", biWidth=" << m_infoheader.biWidth + << ", biHeight=" << m_infoheader.biHeight + << ", biPlanes=" << m_infoheader.biPlanes + << endl + + << " biBitCount=" << m_infoheader.biBitCount + << ", biCompression=" << m_infoheader.biCompression + << ", biSizeImage=" << m_infoheader.biSizeImage + << endl + + << " biXPelsPerMeter=" << m_infoheader.biXPelsPerMeter + << ", biYPelsPerMeter=" << m_infoheader.biYPelsPerMeter + << ", biClrUsed=" << m_infoheader.biClrUsed + << ", biClrImportant=" << m_infoheader.biClrImportant + << endl; +} +#endif + +/* vim: set et sw=2 ts=2: */ -- cgit v1.2.3