MarkerCache.h

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/*
 *    Copyright (C) 2016-2026 Grok Image Compression Inc.
 *
 *    This source code is free software: you can redistribute it and/or  modify
 *    it under the terms of the GNU Affero General Public License, version 3,
 *    as published by the Free Software Foundation.
 *
 *    This source code is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU Affero General Public License for more details.
 *
 *    You should have received a copy of the GNU Affero General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
 
#pragma once
 
#include <vector>
#include <memory>
#include <cinttypes>
 
namespace grk
{

struct Marker
{
  explicit Marker(uint16_t id = 0, uint64_t pos = 0, uint16_t len = 0)
      : id_(id), pos_(pos), len_(len)
  {}

  void dump(FILE* outputFileStream)
  {
    fprintf(outputFileStream, "\t\t type=%#x, pos=%" PRIu64 ", len=%u\n", id_, pos_, len_);
  }

  uint16_t id_;

  uint64_t pos_;

  uint16_t len_;
};

struct MarkerCache
{
  MarkerCache();
  virtual ~MarkerCache() = default;

  void dump(FILE* out);

  void add(uint16_t id, uint64_t pos, uint16_t len);

  uint64_t getTileStreamStart();

  void setTileStreamStart(uint64_t start);
 
private:
  uint64_t mainHeaderStart_;

  uint64_t tileStreamStart_;

  std::vector<std::unique_ptr<Marker>> markers_;
};
 
} // namespace grk