tesseract/dict/dawg_cache.h

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///////////////////////////////////////////////////////////////////////
// File: dawg_cache.h
// Description: A class that knows about loading and caching dawgs.
// Author: David Eger
// Created: Fri Jan 27 12:08:00 PST 2012
//
// (C) Copyright 2012, Google Inc.
// 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.
//
///////////////////////////////////////////////////////////////////////
#ifndef TESSERACT_DICT_DAWG_CACHE_H_
#define TESSERACT_DICT_DAWG_CACHE_H_
#include "dawg.h"
#include "object_cache.h"
#include "strngs.h"
#include "tessdatamanager.h"
namespace tesseract {
class DawgCache {
public:
Dawg *GetSquishedDawg(
const STRING &lang,
const char *data_file_name,
TessdataType tessdata_dawg_type,
int debug_level);
// If we manage the given dawg, decrement its count,
// and possibly delete it if the count reaches zero.
// If dawg is unknown to us, return false.
bool FreeDawg(Dawg *dawg) {
return dawgs_.Free(dawg);
}
// Free up any currently unused dawgs.
void DeleteUnusedDawgs() {
dawgs_.DeleteUnusedObjects();
}
private:
ObjectCache<Dawg> dawgs_;
};
} // namespace tesseract
#endif // TESSERACT_DICT_DAWG_CACHE_H_