text: /*
  -----------------------------------------------------------------------------
  This source file is part of OGRE
  (Object-oriented Graphics Rendering Engine)
  For the latest info, see http://www.ogre3d.org/
  
  Copyright (c) 2000-2014 Torus Knot Software Ltd
  
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.
  -----------------------------------------------------------------------------
  */
  #ifndef __OgrePVRTCCodec_H__
  #define __OgrePVRTCCodec_H__
  
  #include "OgreImageCodec.h"
  
  namespace Ogre {
  	/** \addtogroup Core
  	*  @{
  	*/
  	/** \addtogroup Image
  	*  @{
  	*/
  
      /** Codec specialized in loading PVRTC (PowerVR) images.
  	@remarks
  		We implement our own codec here since we need to be able to keep PVRTC
  		data compressed if the card supports it.
      */
      class _OgreExport PVRTCCodec : public ImageCodec
      {
      protected:
          String mType;
  
  		static void flipEndian(void * pData, size_t size, size_t count);	// invokes Bitwise::bswapChunks() if OGRE_ENDIAN_BIG
  		static void flipEndian(void * pData, size_t size);					// invokes Bitwise::bswapBuffer() if OGRE_ENDIAN_BIG
  
  		/// Single registered codec instance
  		static PVRTCCodec* msInstance;
  
  	public:
          PVRTCCodec();
          virtual ~PVRTCCodec() { }
  
          /// @copydoc Codec::encode
          DataStreamPtr encode(const MemoryDataStreamPtr& input, const CodecDataPtr& pData) const;
          /// @copydoc Codec::encodeToFile
          void encodeToFile(const MemoryDataStreamPtr& input, const String& outFileName, const CodecDataPtr& pData) const;
          /// @copydoc Codec::decode
          DecodeResult decode(const DataStreamPtr& input) const;
  		/// @copydoc Codec::magicNumberToFileExt
  		String magicNumberToFileExt(const char *magicNumberPtr, size_t maxbytes) const;
          
          virtual String getType() const;        
  
  		/// Static method to startup and register the PVRTC codec
  		static void startup(void);
  		/// Static method to shutdown and unregister the PVRTC codec
  		static void shutdown(void);
  
  	private:
  		/// Decode PVRTCV2 image format
  		DecodeResult decodeV2(const DataStreamPtr& stream) const;
  
  		/// Decode PVRTCV3 image format
  		DecodeResult decodeV3(const DataStreamPtr& stream) const;
      };
  	/** @} */
  	/** @} */
  
  } // namespace
  
  #endif
  
  