/*
 *    Copyright (C) 2016-2021 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 <map>

namespace grk
{
struct TileProcessor;
class GrkImage;

#include "GrkImage.h"

struct TileCacheEntry
{
	explicit TileCacheEntry(TileProcessor* p);
	TileCacheEntry();
	~TileCacheEntry();

	TileProcessor* processor;
};

class TileCache
{
  public:
	TileCache(GRK_TILE_CACHE_STRATEGY strategy);
	TileCache(void);
	virtual ~TileCache();

	bool empty(void);
	void setStrategy(GRK_TILE_CACHE_STRATEGY strategy);
	TileCacheEntry* put(uint16_t tileIndex, TileProcessor* processor);
	TileCacheEntry* get(uint16_t tileIndex);
	GrkImage* getComposite(void);
	std::vector<GrkImage*> getAllImages(void);
	std::vector<GrkImage*> getTileImages(void);

  private:
	// each component is sub-sampled and resolution-reduced
	GrkImage* tileComposite;
	std::map<uint32_t, TileCacheEntry*> m_cache;
	GRK_TILE_CACHE_STRATEGY m_strategy;
};

} // namespace grk
