/* -----------------------------------------------------------------------------

The copyright in this software is being made available under the Clear BSD

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other Intellectual Property Rights other than the copyrights concerning 

the Software are granted under this license.

The Clear BSD License

Copyright (c) 2018-2026, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. & The VVdeC Authors.

All rights reserved.

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     * Redistributions of source code must retain the above copyright notice,

     this list of conditions and the following disclaimer.

     * Redistributions in binary form must reproduce the above copyright

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     software without specific prior written permission.

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------------------------------------------------------------------------------------------- */

#pragma once

#include <list>

#include <vector>

#include <cstdint>

#include <cstring>

#include "vvdec/sei.h"

namespace vvdec

{

typedef std::list<vvdecSEI*> seiMessages;

class SEI_internal

{

public:

  SEI_internal() {}

  virtual ~SEI_internal() {}

  static const char *getSEIMessageString( vvdecSEIPayloadType payloadType);

  /// output a selection of SEI messages by payload type. Ownership stays in original message list.

  static seiMessages getSeisByType(const seiMessages &seiList, vvdecSEIPayloadType seiType);

  /// remove a selection of SEI messages by payload type from the original list and return them in a new list.

  static seiMessages extractSeisByType(seiMessages &seiList, vvdecSEIPayloadType seiType);

  /// delete list of SEI messages (freeing the referenced objects)

  static void deleteSEIs (seiMessages &seiList);

  static vvdecSEI* allocSEI ( vvdecSEIPayloadType payloadType );

  static int allocSEIPayload( vvdecSEI* sei, int userDefSize = -1 );

  static int getPayloadSize ( vvdecSEIPayloadType payloadType);

};

struct PictureHash

{

  std::vector<uint8_t> hash = {};

  bool operator==(const PictureHash &other) const

  {

    if (other.hash.size() != hash.size())

    {

      return false;

    }

    for(uint32_t i=0; i<uint32_t(hash.size()); i++)

    {

      if (other.hash[i] != hash[i])

      {

        return false;

      }

    }

    return true;

  }

  bool operator!=(const PictureHash &other) const

  {

    return !(*this == other);

  }

  bool equal( vvdecSEIDecodedPictureHash digest ) const

  {

    if ((size_t)digest.digest_length != hash.size())

    {

      return false;

    }

    for(uint32_t i=0; i<uint32_t(hash.size()); i++)

    {

      if (digest.digest[i] != hash[i])

      {

        return false;

      }

    }

    return true;

  }

};

}