text: /*
  * All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
  * its licensors.
  *
  * For complete copyright and license terms please see the LICENSE at the root of this
  * distribution (the "License"). All use of this software is governed by the License,
  * or, if provided, by the license below or the license accompanying this file. Do not
  * remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *
  */
  // Original file Copyright Crytek GMBH or its affiliates, used under license.
  
  #ifndef CRYINCLUDE_EDITOR_UTIL_IMAGE_DXTC_H
  #define CRYINCLUDE_EDITOR_UTIL_IMAGE_DXTC_H
  #pragma once
  
  #include "ImageExtensionHelper.h"
  
  class CImage_DXTC
  {
      // Typedefs
  public:
  protected:
      //////////////////////////////////////////////////////////////////////////
      // Extracted from Compressorlib.h on SDKs\CompressATI directory.
      // Added here because we are not really using the elements inside
      // this header file apart from those definitions as we are currently
      // loading the DLL CompressATI2.dll manually as recommended by the rendering
      // team.
      typedef enum
      {
          FORMAT_ARGB_8888,
          FORMAT_ARGB_TOOBIG
      } UNCOMPRESSED_FORMAT;
  
      typedef enum
      {
          COMPRESSOR_ERROR_NONE,
          COMPRESSOR_ERROR_NO_INPUT_DATA,
          COMPRESSOR_ERROR_NO_OUTPUT_POINTER,
          COMPRESSOR_ERROR_UNSUPPORTED_SOURCE_FORMAT,
          COMPRESSOR_ERROR_UNSUPPORTED_DESTINATION_FORMAT,
          COMPRESSOR_ERROR_UNABLE_TO_INIT_CODEC,
          COMPRESSOR_ERROR_GENERIC
      } COMPRESSOR_ERROR;
      //////////////////////////////////////////////////////////////////////////
  
      // Methods
  public:
      CImage_DXTC();
      ~CImage_DXTC();
  
      // Arguments:
      //   pQualityLoss - 0 if info is not needed, pointer to the result otherwise - not need to preinitialize
      bool Load(const char* filename, CImageEx& outImage, bool* pQualityLoss = 0);        // true if success
  
      static inline const char* NameForTextureFormat(ETEX_Format ETF) { return CImageExtensionHelper::NameForTextureFormat(ETF); }
      static inline bool IsBlockCompressed(ETEX_Format ETF) { return CImageExtensionHelper::IsBlockCompressed(ETF); }
      static inline bool IsLimitedHDR(ETEX_Format ETF) { return CImageExtensionHelper::IsRangeless(ETF); }
  
      int TextureDataSize(int nWidth, int nHeight, int nDepth, int nMips, ETEX_Format eTF);
  
  private:
      static COMPRESSOR_ERROR CheckParameters(
          int width,
          int height,
          UNCOMPRESSED_FORMAT destinationFormat,
          const void* sourceData,
          void* destinationData,
          int destinationDataSize);
  
      static COMPRESSOR_ERROR DecompressTextureBTC(
          int width,
          int height,
          ETEX_Format sourceFormat,
          UNCOMPRESSED_FORMAT destinationFormat,
          const int imageFlags,
          const void* sourceData,
          void* destinationData,
          int destinationDataSize,
          int destinationPageOffset);
  };
  
  #endif // CRYINCLUDE_EDITOR_UTIL_IMAGE_DXTC_H
  