core/fxcodec/jbig2/JBig2_ArithIntDecoder.h


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#ifndef CORE_FXCODEC_JBIG2_JBIG2_ARITHINTDECODER_H_
#define CORE_FXCODEC_JBIG2_JBIG2_ARITHINTDECODER_H_

#include <vector>

#include "core/fxcodec/jbig2/JBig2_ArithDecoder.h"
#include "core/fxcrt/fx_system.h"

class CJBig2_ArithIntDecoder {
 public:
  CJBig2_ArithIntDecoder();
  ~CJBig2_ArithIntDecoder();

  // Returns true on success, and false when an OOB condition occurs.
  bool decode(CJBig2_ArithDecoder* pArithDecoder, int* nResult);

 private:
  std::vector<JBig2ArithCtx> m_IAx;
};

class CJBig2_ArithIaidDecoder {
 public:
  explicit CJBig2_ArithIaidDecoder(unsigned char SBSYMCODELENA);
  ~CJBig2_ArithIaidDecoder();

  bool decode(CJBig2_ArithDecoder* pArithDecoder, uint32_t* nResult);

 private:
  std::vector<JBig2ArithCtx> m_IAID;

  const unsigned char SBSYMCODELEN;
};

#endif  // CORE_FXCODEC_JBIG2_JBIG2_ARITHINTDECODER_H_