tesseract  v4.0.0-17-g361f3264
Open Source OCR Engine
dawg_cache.h
1 // File: dawg_cache.h
3 // Description: A class that knows about loading and caching dawgs.
4 // Author: David Eger
5 // Created: Fri Jan 27 12:08:00 PST 2012
6 //
7 // (C) Copyright 2012, Google Inc.
8 // Licensed under the Apache License, Version 2.0 (the "License");
9 // you may not use this file except in compliance with the License.
10 // You may obtain a copy of the License at
11 // http://www.apache.org/licenses/LICENSE-2.0
12 // Unless required by applicable law or agreed to in writing, software
13 // distributed under the License is distributed on an "AS IS" BASIS,
14 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 // See the License for the specific language governing permissions and
16 // limitations under the License.
17 //
19 
20 #ifndef TESSERACT_DICT_DAWG_CACHE_H_
21 #define TESSERACT_DICT_DAWG_CACHE_H_
22 
23 #include "dawg.h"
24 #include "object_cache.h"
25 #include "strngs.h"
26 #include "tessdatamanager.h"
27 
28 namespace tesseract {
29 
30 class DawgCache {
31  public:
32  Dawg *GetSquishedDawg(const STRING &lang, TessdataType tessdata_dawg_type,
33  int debug_level, TessdataManager *data_file);
34 
35  // If we manage the given dawg, decrement its count,
36  // and possibly delete it if the count reaches zero.
37  // If dawg is unknown to us, return false.
38  bool FreeDawg(Dawg *dawg) {
39  return dawgs_.Free(dawg);
40  }
41 
42  // Free up any currently unused dawgs.
44  dawgs_.DeleteUnusedObjects();
45  }
46 
47  private:
49 };
50 
51 } // namespace tesseract
52 
53 #endif // TESSERACT_DICT_DAWG_CACHE_H_
Definition: dawg.h:119
Definition: baseapi.cpp:94
Definition: object_cache.h:35
ObjectCache< Dawg > dawgs_
Definition: dawg_cache.h:48
void DeleteUnusedDawgs()
Definition: dawg_cache.h:43
Definition: tessdatamanager.h:126
TessdataType
Definition: tessdatamanager.h:56
Definition: strngs.h:45
Definition: dawg_cache.h:30
bool FreeDawg(Dawg *dawg)
Definition: dawg_cache.h:38
Dawg * GetSquishedDawg(const STRING &lang, TessdataType tessdata_dawg_type, int debug_level, TessdataManager *data_file)
Definition: dawg_cache.cpp:45