1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 
7 #ifndef CORE_SRC_FXCODEC_JBIG2_JBIG2_ARITHINTDECODER_H_
8 #define CORE_SRC_FXCODEC_JBIG2_JBIG2_ARITHINTDECODER_H_
9 
10 #include <vector>
11 
12 #include "JBig2_ArithDecoder.h"
13 #include "core/include/fxcrt/fx_system.h"
14 
15 class CJBig2_ArithIntDecoder {
16  public:
17   CJBig2_ArithIntDecoder();
18   ~CJBig2_ArithIntDecoder();
19 
20   // Returns true on success, and false when an OOB condition occurs. Many
21   // callers can tolerate OOB and do not check the return value.
22   bool decode(CJBig2_ArithDecoder* pArithDecoder, int* nResult);
23 
24  private:
25   std::vector<JBig2ArithCtx> m_IAx;
26 };
27 
28 class CJBig2_ArithIaidDecoder {
29  public:
30   explicit CJBig2_ArithIaidDecoder(unsigned char SBSYMCODELENA);
31   ~CJBig2_ArithIaidDecoder();
32 
33   void decode(CJBig2_ArithDecoder* pArithDecoder, FX_DWORD* nResult);
34 
35  private:
36   std::vector<JBig2ArithCtx> m_IAID;
37 
38   const unsigned char SBSYMCODELEN;
39 };
40 
41 #endif  // CORE_SRC_FXCODEC_JBIG2_JBIG2_ARITHINTDECODER_H_
42