144 lines
4.3 KiB
C++
144 lines
4.3 KiB
C++
// ==========================================================================
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// Class Specification : COXBMPFile
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// ==========================================================================
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// Header file : OXBMPFle.h
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// Version: 9.3
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// This software along with its related components, documentation and files ("The Libraries")
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// is © 1994-2007 The Code Project (1612916 Ontario Limited) and use of The Libraries is
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// governed by a software license agreement ("Agreement"). Copies of the Agreement are
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// available at The Code Project (www.codeproject.com), as part of the package you downloaded
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// to obtain this file, or directly from our office. For a copy of the license governing
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// this software, you may contact us at legalaffairs@codeproject.com, or by calling 416-849-8900.
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// //////////////////////////////////////////////////////////////////////////
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// Properties:
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// NO Abstract class (does not have any objects)
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// YES Derived from COXGraphicsFile
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// NO Is a Cwnd.
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// NO Two stage creation (constructor & Create())
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// NO Has a message map
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// NO Needs a resource (template)
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// NO Persistent objects (saveable on disk)
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// YES Uses exceptions
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// //////////////////////////////////////////////////////////////////////////
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// Desciption :
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// This class encapsulates the reading and writing of BMP files
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// Remark:
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//
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// Prerequisites (necessary conditions):
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//
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/////////////////////////////////////////////////////////////////////////////
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#ifndef __BMPFILE_H__
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#define __BMPFILE_H__
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#if _MSC_VER >= 1000
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#pragma once
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#endif // _MSC_VER >= 1000
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#include "OXDllExt.h"
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#include "OXGphFle.h"
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class OX_CLASS_DECL COXBMPFile : public COXGraphicFile
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{
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friend class COXJPEGCompressor;
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friend class COXJPEGDecompressor;
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// Data Members
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public:
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protected:
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// Shared members
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jvirt_sarray_ptr m_WholeImage;
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JDIMENSION m_RowWidth;
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// Specific Compress members
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j_compress_ptr m_cinfo;
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JSAMPARRAY m_Colormap;
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JDIMENSION m_SourceRow;
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int m_BitsPerPixel;
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JDIMENSION (COXBMPFile::*m_pfnGetPixelRows)(j_compress_ptr cinfo);
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// Specific Decompress members
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BOOL m_bIsOS2; /* saves the OS2 format request flag */
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JDIMENSION m_DataWidth; /* JSAMPLEs per row */
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int m_nPadBytes; /* number of padding bytes needed per row */
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JDIMENSION m_CurOutputRow; /* next row# to write to virtual array */
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void (COXBMPFile::*m_pfnPutPixelRows)(j_decompress_ptr cinfo, JDIMENSION rows_supplied);
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private:
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// Member Functions
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public:
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COXBMPFile(CString sFullPath);
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// --- In : sFullPath : the full path subdirs + name + extender of the graphic file
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// --- Out :
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// --- Returns :
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// --- Effect : Contructor of object
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// File will not be opened yet. Must be a BMP file
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COXBMPFile(CFile* pGraphicFile);
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// --- In : pGraphicFile : a pointer to a CFile. must already be open
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// --- Out :
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// --- Returns :
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// --- Effect : Contructor of object
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// Could be used to pass a CMemFile as parameter. Must be a BMP file
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void SetOS2Format(BOOL bIsOS2)
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{ m_bIsOS2 = bIsOS2;}
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BOOL GetOS2Format()
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{ return m_bIsOS2;}
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#ifdef _DEBUG
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virtual void Dump(CDumpContext&) const;
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virtual void AssertValid() const;
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#endif //_DEBUG
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virtual ~COXBMPFile();
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// --- In :
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// --- Out :
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// --- Returns :
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// --- Effect : Destructor of object
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protected:
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virtual BOOL StartInput(j_compress_ptr cinfo);
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virtual BOOL FinishInput(j_compress_ptr cinfo);
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virtual JDIMENSION GetPixelRows(j_compress_ptr cinfo);
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virtual BOOL StartOutput(j_decompress_ptr cinfo);
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virtual BOOL FinishOutput(j_decompress_ptr cinfo);
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virtual BOOL PutPixelRows(j_decompress_ptr cinfo, JDIMENSION rowsSupplied);
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virtual BOOL InitRead(j_compress_ptr cinfo);
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virtual BOOL InitWrite(j_decompress_ptr cinfo, BOOL bExtra = FALSE);
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int ReadByte();
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void ReadColorMap(int cmaplen, int mapentrysize);
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JDIMENSION Get8bitRow(j_compress_ptr cinfo);
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JDIMENSION Get24bitRow(j_compress_ptr cinfo);
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JDIMENSION PreloadImage(j_compress_ptr cinfo);
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void PutGrayRows(j_decompress_ptr cinfo, JDIMENSION rows_supplied);
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void Put24PixelRows(j_decompress_ptr cinfo, JDIMENSION rows_supplied);
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void WriteBMPHeader(j_decompress_ptr cinfo);
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void WriteOS2Header(j_decompress_ptr cinfo);
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void WriteColorMap (j_decompress_ptr cinfo, int map_colors, int map_entry_size);
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private:
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};
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#endif //__BMPFILE_H__
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