text: /*
   *
   *    Copyright (c) 2021 Project CHIP Authors
   *    All rights reserved.
   *
   *    Licensed under the Apache License, Version 2.0 (the "License");
   *    you may not use this file except in compliance with the License.
   *    You may obtain a copy of the License at
   *
   *        http://www.apache.org/licenses/LICENSE-2.0
   *
   *    Unless required by applicable law or agreed to in writing, software
   *    distributed under the License is distributed on an "AS IS" BASIS,
   *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *    See the License for the specific language governing permissions and
   *    limitations under the License.
   */
  
  #pragma once
  
  #include <app/clusters/ota-requestor/OTADownloader.h>
  #include <platform/CHIPDeviceLayer.h>
  #include <platform/OTAImageProcessor.h>
  
  namespace chip {
  
  class OTAImageProcessorImpl : public OTAImageProcessorInterface
  {
  public:
      //////////// OTAImageProcessorInterface Implementation ///////////////
      CHIP_ERROR PrepareDownload() override;
      CHIP_ERROR Finalize() override;
      CHIP_ERROR Apply() override;
      CHIP_ERROR Abort() override;
      CHIP_ERROR ProcessBlock(ByteSpan & block) override;
      bool IsFirstImageRun() override { return false; }
      CHIP_ERROR ConfirmCurrentImage() override { return CHIP_NO_ERROR; }
  
      void SetOTADownloader(OTADownloader * downloader) { mDownloader = downloader; }
  
  private:
      //////////// Actual handlers for the OTAImageProcessorInterface ///////////////
      static void HandlePrepareDownload(intptr_t context);
      static void HandleFinalize(intptr_t context);
      static void HandleAbort(intptr_t context);
      static void HandleProcessBlock(intptr_t context);
  
      /**
       * Called to allocate memory for mBlock if necessary and set it to block
       */
      CHIP_ERROR SetBlock(ByteSpan & block);
  
      /**
       * Called to release allocated memory for mBlock
       */
      CHIP_ERROR ReleaseBlock();
  
      std::uint32_t mSwVer;
      std::uint32_t mHwVer;
  
      MutableByteSpan mBlock;
      OTADownloader * mDownloader;
  };
  
  } // namespace chip
  