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//******************************************** // Texture.cpp //******************************************** // class CTexture //******************************************** // [email protected] // Created : 17/12/97 // Modified : 19/12/97 //******************************************** #include "stdafx.h" #include "math.h" #include "Texture.h" ////////////////////////////////////////////// // CONSTRUCTORS ////////////////////////////////////////////// //******************************************** // Constructor //******************************************** CTexture::CTexture() { m_pData = NULL; m_Width = 0; m_WidthByte32 = 0; m_Height = 0; m_Depth = 0; m_FileName = _T(""); } //******************************************** // Destructor //******************************************** CTexture::~CTexture() { Free(); } ////////////////////////////////////////////// // DATAS ////////////////////////////////////////////// //******************************************** // Alloc //******************************************** int CTexture::Alloc(unsigned int width, unsigned int height, unsigned int depth) { Free(); unsigned int BytePerPixel = (unsigned int)(depth / 8); unsigned int Width32 = WidthByte32(width,depth); // Only rgb and rgba modes ASSERT(BytePerPixel == 3 || BytePerPixel == 4); m_pData = new unsigned char [Width32 * height]; if(m_pData == NULL) { TRACE("CTexture::Alloc : Insuffisant memory\n"); AfxMessageBox("CTexture::Alloc : Insufisant memory"); return 0; } // Set members variables m_Width = width; m_WidthByte32 = Width32; m_Height = height; m_Depth = depth; UpdateHeader(); return 1; } //******************************************** // Free //******************************************** void CTexture::Free() { if(m_pData != NULL) { delete [] m_pData; m_pData = NULL; } m_Width = 0; m_Height = 0; m_Depth = 0; } ////////////////////////////////////////////// ////////////////////////////////////////////// // FILE READING ////////////////////////////////////////////// ////////////////////////////////////////////// //******************************************** // ReadFile // Redirection //******************************************** int CTexture::ReadFile(char *filename, unsigned int width, unsigned int height, unsigned int depth) { // Cleanup Free(); // Storage m_FileName = filename; // Extension CString string = filename; string.MakeLower(); TRACE("CTexture::ReadFile : file : %s\n",filename); CString extension = string.Right(4); // Redirection BMP if(extension == ".bmp") return ReadFileBMP(filename); // Redirection RAW if(extension == ".raw") return ReadFileRAW(filename,width,height,depth); // Unrecognized file format CString message; message.Format("CTexture::ReadFile : invalid file redirection : %s\n",filename); AfxMessageBox(string); return 0; } //******************************************** // ReadFileBMP (*.bmp) //******************************************** // Read windows bmp files // Accept only 24 bits // Size : 2^n x 2^m //******************************************** int CTexture::ReadFileBMP(char *filename) { // Check for valid bmp file CFile file; CFileException ex; // Try to open file if(!file.Open(filename, CFile::modeRead | CFile::typeBinary,&ex)) { #ifdef _DEBUG afxDump << "File could not be opened " << ex.m_cause << "\n"; #endif AfxMessageBox("Unable to open file for reading"); return 0; } // File header BITMAPFILEHEADER FileHeader; TRY { file.Read(&FileHeader,sizeof(BITMAPFILEHEADER)); } CATCH(CFileException, e) { #ifdef _DEBUG afxDump << "Error during reading " << e->m_cause << "\n"; #endif AfxMessageBox("Error during reading file header"); file.Close(); return 0; } END_CATCH TRACE("FileHeader.bfType : %d\n",FileHeader.bfType); TRACE("FileHeader.bfSize : %d\n",FileHeader.bfSize); TRACE("FileHeader.bfReserved1 : %d\n",FileHeader.bfReserved1); TRACE("FileHeader.bfReserved2 : %d\n",FileHeader.bfReserved2); TRACE("FileHeader.bfOffBits : %d\n",FileHeader.bfOffBits); // Is it a Windows BMP file ? (BM) WORD sign = ((WORD) ('M' << 8) | 'B'); if(FileHeader.bfType != sign) { AfxMessageBox("Invalid BMP file"); file.Close(); return 0; } // Image header TRY { file.Read(&m_Header,sizeof(BITMAPINFOHEADER)); } CATCH(CFileException, e) { #ifdef _DEBUG afxDump << "Error during reading " << e->m_cause << "\n"; #endif AfxMessageBox("Error during reading image header"); file.Close(); return 0; } END_CATCH // DEBUG TRACE("\n"); TRACE("**** IMAGE HEADER :\n"); TRACE("**** biSize : %d\n",m_Header.biSize); TRACE("**** biWidth : %d\n",m_Header.biWidth); TRACE("**** biHeight : %d\n",m_Header.biHeight); TRACE("**** biPlanes : %d\n",m_Header.biPlanes); TRACE("**** biBitCount : %d\n",m_Header.biBitCount); TRACE("**** biCompression : %d\n",m_Header.biCompression); TRACE("**** biSizeImage : %d\n",m_Header.biSizeImage); TRACE("**** biXPelsPerMeter : %d\n",m_Header.biXPelsPerMeter); TRACE("**** biYPelsPerMeter : %d\n",m_Header.biYPelsPerMeter); TRACE("**** biClrUsed : %d\n",m_Header.biClrUsed); TRACE("**** biClrImportant : %d\n",m_Header.biClrImportant); // 24 bits ? if(m_Header.biPlanes != 1 || m_Header.biBitCount != 24) { AfxMessageBox("Texture file must have 24 bits depth"); file.Close(); return 0; } // // Non ho capito perche' ma molti editor settano a 0 biSizeImage ! // if( !m_Header.biSizeImage ){ UINT nStride = (m_Header.biWidth * (m_Header.biBitCount/8) + 1) & (~1); // Stride is the BMP's bytes per row. m_Header.biSizeImage = nStride * m_Header.biHeight; } // Alloc (does call Free before) Free(); m_pData = new unsigned char[m_Header.biSizeImage]; if(m_pData == NULL) { AfxMessageBox("Insuffisant memory"); file.Close(); return 0; } // Update datas m_Width = m_Header.biWidth; m_Height = m_Header.biHeight; m_Depth = m_Header.biBitCount; // Image reading TRY { file.Read(m_pData,m_Header.biSizeImage); } CATCH(CFileException, e) { #ifdef _DEBUG afxDump << "Error during reading " << e->m_cause << "\n"; #endif AfxMessageBox("Error during reading image"); file.Close(); return 0; } END_CATCH // Close file file.Close(); // Success, also set FileName m_FileName = filename; UpdateWidthByte32(); return 1; } //******************************************** // UpdateWidthByte32 //******************************************** void CTexture::UpdateWidthByte32() { m_WidthByte32 = WidthByte32(m_Width,m_Depth); } //******************************************** // WidthByte32 //******************************************** unsigned int CTexture::WidthByte32(unsigned int width, unsigned int depth) { // 32 bits alignment (4 bytes) int rest=(width*depth/8)%4; if(rest != 0) return (width*depth/8 + 4-rest); else return (width*depth/8); } //******************************************** // UpdateHeader //******************************************** void CTexture::UpdateHeader() { UpdateWidthByte32(); m_Header.biWidth = m_Width; m_Header.biHeight = m_Height; m_Header.biSizeImage = m_WidthByte32 * m_Height; m_Header.biSize = 40; m_Header.biPlanes = 1; m_Header.biBitCount = m_Depth; m_Header.biCompression = 0; m_Header.biXPelsPerMeter = 0; m_Header.biYPelsPerMeter = 0; m_Header.biClrUsed = 0; m_Header.biClrImportant = 0; } //******************************************** // ReadFileRAW (*.raw) //******************************************** // Read raw files