text: //===============================================================================
  // Copyright (c) 2014-2018  Advanced Micro Devices, Inc. All rights reserved.
  //===============================================================================
  //
  // 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_GT.h
  //
  //////////////////////////////////////////////////////////////////////////////
  
  #ifndef _CODEC_GTCH_H_INCLUDED_
  #define _CODEC_GTCH_H_INCLUDED_
  
  #include "Compressonator.h"
  #include "Codec_DXTC.h"
  #include "GTCH_Encode.h"
  #include "GTCH_Decode.h"
  
  #include <thread>
  
  struct GTCHEncodeThreadParam
  {
      GTCHBlockEncoder   *encoder;
      CMP_FLOAT         in[MAX_SUBSET_SIZE][MAX_DIMENSION_BIG];
      CMP_BYTE             *out;
      volatile CMP_BOOL    run;
      volatile CMP_BOOL    exit;
  };
  
  class CCodec_GTCH : public CCodec_DXTC
  {
  public:
      CCodec_GTCH();
      ~CCodec_GTCH();
  
      virtual bool SetParameter(const CMP_CHAR* pszParamName, CMP_CHAR* sValue);
      virtual bool SetParameter(const CMP_CHAR* /*pszParamName*/, CMP_DWORD /*dwValue*/);
      virtual bool SetParameter(const CMP_CHAR* /*pszParamName*/, CODECFLOAT /*fValue*/);
  
      // Required interfaces
      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);
  
  
  private:
  
      GTCHEncodeThreadParam *m_EncodeParameterStorage;
  
      // NGT Quality level
      double m_quality;
      double m_performance;
      double m_errorThreshold;
  
      // GT User configurable variables
      CMP_WORD    m_NumThreads;
  
      // GT Internal status 
      CMP_BOOL     m_LibraryInitialized;
      CMP_BOOL     m_Use_MultiThreading;
      CMP_WORD     m_NumEncodingThreads;
      CMP_WORD     m_LiveThreads;
      CMP_WORD     m_LastThread;
  
      // GT Encoders and decoders: for encding use the interfaces below
      std::thread*        m_EncodingThreadHandle;
      GTCHBlockEncoder*    m_encoder[128];
      GTCHBlockDecoder*    m_decoder;
  
      // Encoder interfaces
      CodecError    InitializeGTCHLibrary();
      CodecError    EncodeGTCHBlock(
          CMP_FLOAT  in[MAX_SUBSET_SIZE][MAX_DIMENSION_BIG],
          CMP_BYTE   *out
      );
      CodecError    FinishGTCHEncoding(void);
  };
  
  #endif // !defined(_CODEC_DXT5_H_INCLUDED_)
  