Source/System/FileIO/Ogre/OSGOgreChunkReader.h

   1 /*---------------------------------------------------------------------------*\
   2  *                                OpenSG                                     *
   3  *                                                                           *
   4  *                                                                           *
   5  *                Copyright (C) 2010 by the OpenSG Forum                     *
   6  *                                                                           *
   7  *                            www.opensg.org                                 *
   8  *                                                                           *
   9  *   contact: dirk@opensg.org, gerrit.voss@vossg.org, jbehr@zgdv.de          *
  10  *                                                                           *
  11 \*---------------------------------------------------------------------------*/
  12 /*---------------------------------------------------------------------------*\
  13  *                                License                                    *
  14  *                                                                           *
  15  * This library is free software; you can redistribute it and/or modify it   *
  16  * under the terms of the GNU Library General Public License as published    *
  17  * by the Free Software Foundation, version 2.                               *
  18  *                                                                           *
  19  * This library is distributed in the hope that it will be useful, but       *
  20  * WITHOUT ANY WARRANTY; without even the implied warranty of                *
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU         *
  22  * Library General Public License for more details.                          *
  23  *                                                                           *
  24  * You should have received a copy of the GNU Library General Public         *
  25  * License along with this library; if not, write to the Free Software       *
  26  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                 *
  27  *                                                                           *
  28 \*---------------------------------------------------------------------------*/
  29 /*---------------------------------------------------------------------------*\
  30  *                                Changes                                    *
  31  *                                                                           *
  32  *                                                                           *
  33  *                                                                           *
  34  *                                                                           *
  35  *                                                                           *
  36  *                                                                           *
  37 \*---------------------------------------------------------------------------*/
  38
  39 #ifndef _OSGOGRECHUNKREADER_H_
  40 #define _OSGOGRECHUNKREADER_H_
  41 #ifdef __sgi
  42 #pragma once
  43 #endif
  44
  45 /*! \file OSGOgreChunkreader.h
  46     \ingroup GrpLoader
  47  */
  48
  49 #include "OSGConfig.h"
  50 #include "OSGFileIODef.h"
  51 #include "OSGBaseTypes.h"
  52
  53 OSG_BEGIN_NAMESPACE
  54
  55 class OSG_FILEIO_DLLMAPPING OgreChunkReader
  56 {
  57     /*==========================  PUBLIC  =================================*/
  58   public:
  59     /*---------------------------------------------------------------------*/
  60     /*! \name Constructors/Destructor                                      */
  61     /*! \{                                                                 */
  62
  63     explicit  OgreChunkReader(std::istream& is);
  64     virtual  ~OgreChunkReader(void            ) = 0;
  65
  66     /*! \}                                                                 */
  67     /*=========================  PROTECTED  ===============================*/
  68   protected:
  69     struct ChunkHeader
  70     {
  71         UInt16 chunkId;
  72         UInt32 chunkSize;
  73     };
  74
  75     void readChunkHeader(std::istream& is);
  76
  77     void skip(std::istream& is, Int32 offset);
  78
  79     std::string readString (std::istream& is);
  80
  81     bool   readBool  (std::istream& is);
  82     void   readBool  (std::istream& is, bool* values, UInt32 count);
  83
  84     Int16  readInt16 (std::istream& is);
  85     void   readInt16 (std::istream& is, Int16* values, UInt32 count);
  86
  87     UInt16 readUInt16(std::istream& is);
  88     void   readUInt16(std::istream& is, UInt16* values, UInt32 count);
  89
  90     UInt32 readUInt32(std::istream& is);
  91     void   readUInt32(std::istream& is, UInt32* values, UInt32 count);
  92
  93     Real32 readReal32(std::istream& is);
  94     void   readReal32(std::istream& is, Real32* values, UInt32 count);
  95
  96     static const Int32 _chunkHeaderSize;
  97
  98     ChunkHeader         _header;
  99     std::istream&       _is;
 100 };
 101
 102 OSG_END_NAMESPACE
 103
 104 #endif // _OSGOGRECHUNKREADER_H_