text: //===============================================================================
  // Copyright (c) 2007-2016  Advanced Micro Devices, Inc. All rights reserved.
  // Copyright (c) 2004-2006 ATI Technologies Inc.
  //===============================================================================
  //
  // 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.
  //
  //  File Name:   Codec_DXT1.h
  //  Description: interface for the CCodec_DXT1 class
  //
  //////////////////////////////////////////////////////////////////////////////
  
  #ifndef _CODEC_DXT1_H_INCLUDED_
  #define _CODEC_DXT1_H_INCLUDED_
  
  #include "Codec_DXTC.h"
  
  class CCodec_DXT1 : public CCodec_DXTC  
  {
  public:
      CCodec_DXT1();
      virtual ~CCodec_DXT1();
  
      virtual bool SetParameter(const CMP_CHAR* /*pszParamName*/, CMP_CHAR* /*dwValue*/);
      virtual bool SetParameter(const CMP_CHAR* pszParamName, CMP_DWORD dwValue);
      virtual bool GetParameter(const CMP_CHAR* pszParamName, CMP_DWORD& dwValue);
  
      virtual CodecError Compress(CCodecBuffer& bufferIn, CCodecBuffer& bufferOut, Codec_Feedback_Proc pFeedbackProc = NULL, CMP_DWORD_PTR pUser1 = NULL, CMP_DWORD_PTR pUser2 = NULL);
      virtual CodecError Compress_Fast(CCodecBuffer& bufferIn, CCodecBuffer& bufferOut, Codec_Feedback_Proc pFeedbackProc = NULL, CMP_DWORD_PTR pUser1 = NULL, CMP_DWORD_PTR pUser2 = NULL);
      virtual CodecError Compress_SuperFast(CCodecBuffer& bufferIn, CCodecBuffer& bufferOut, Codec_Feedback_Proc pFeedbackProc = NULL, CMP_DWORD_PTR pUser1 = NULL, CMP_DWORD_PTR pUser2 = NULL);
      virtual CodecError Decompress(CCodecBuffer& bufferIn, CCodecBuffer& bufferOut, Codec_Feedback_Proc pFeedbackProc = NULL, CMP_DWORD_PTR pUser1 = NULL, CMP_DWORD_PTR pUser2 = NULL);
  
      virtual CCodecBuffer* CreateBuffer(
          CMP_BYTE nBlockWidth, CMP_BYTE nBlockHeight, CMP_BYTE nBlockDepth,
          CMP_DWORD dwWidth, CMP_DWORD dwHeight, CMP_DWORD dwPitch = 0, CMP_BYTE* pData = 0,CMP_DWORD dwDataSize = 0) const;
  
  protected:
      bool m_bDXT1UseAlpha;
      CMP_BYTE m_nAlphaThreshold;
  };
  
  #endif // !defined(_CODEC_DXT1_H_INCLUDED_)
  