OgreDDSCodec.h

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00001 /*
00002 -----------------------------------------------------------------------------
00003 This source file is part of OGRE
00004 (Object-oriented Graphics Rendering Engine)
00005 For the latest info, see http://www.ogre3d.org/
00006 
00007 Copyright (c) 2000-2006 Torus Knot Software Ltd
00008 Also see acknowledgements in Readme.html
00009 
00010 This program is free software; you can redistribute it and/or modify it under
00011 the terms of the GNU Lesser General Public License as published by the Free Software
00012 Foundation; either version 2 of the License, or (at your option) any later
00013 version.
00014 
00015 This program is distributed in the hope that it will be useful, but WITHOUT
00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
00018 
00019 You should have received a copy of the GNU Lesser General Public License along with
00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
00022 http://www.gnu.org/copyleft/lesser.txt.
00023 
00024 You may alternatively use this source under the terms of a specific version of
00025 the OGRE Unrestricted License provided you have obtained such a license from
00026 Torus Knot Software Ltd.
00027 -----------------------------------------------------------------------------
00028 */
00029 #ifndef __OgreDDSCodec_H__
00030 #define __OgreDDSCodec_H__
00031 
00032 #include "OgreImageCodec.h"
00033 namespace Ogre {
00034 
00035     // Forward declarations
00036     struct DXTColourBlock;
00037     struct DXTExplicitAlphaBlock;
00038     struct DXTInterpolatedAlphaBlock;
00039 
00045     class _OgreExport DDSCodec : public ImageCodec
00046     {
00047     private:
00048         String mType;
00049 
00050         void flipEndian(void * pData, size_t size, size_t count) const;
00051         void flipEndian(void * pData, size_t size) const;
00052 
00053         PixelFormat convertFourCCFormat(uint32 fourcc) const;
00054         PixelFormat convertPixelFormat(uint32 rgbBits, uint32 rMask, 
00055             uint32 gMask, uint32 bMask, uint32 aMask) const;
00056 
00058         void unpackDXTColour(PixelFormat pf, const DXTColourBlock& block, ColourValue* pCol) const;
00060         void unpackDXTAlpha(const DXTExplicitAlphaBlock& block, ColourValue* pCol) const;
00062         void unpackDXTAlpha(const DXTInterpolatedAlphaBlock& block, ColourValue* pCol) const;
00063 
00065         static DDSCodec* msInstance;
00066     public:
00067         DDSCodec();
00068         virtual ~DDSCodec() { }
00069 
00071         DataStreamPtr code(MemoryDataStreamPtr& input, CodecDataPtr& pData) const;
00073         void codeToFile(MemoryDataStreamPtr& input, const String& outFileName, CodecDataPtr& pData) const;
00075         DecodeResult decode(DataStreamPtr& input) const;
00077         String magicNumberToFileExt(const char *magicNumberPtr, size_t maxbytes) const;
00078         
00079         virtual String getType() const;        
00080 
00082         static void startup(void);
00084         static void shutdown(void);
00085 
00086     };
00087 
00088 } // namespace
00089 
00090 #endif
00091 

Copyright © 2008 Torus Knot Software Ltd
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Last modified Sun Sep 27 22:02:23 2009