// 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_ARITHDECODER_H_ #define CORE_FXCODEC_JBIG2_JBIG2_ARITHDECODER_H_ #include <stdint.h> #include "core/fxcrt/cfx_unowned_ptr.h" class CJBig2_BitStream; struct JBig2ArithCtx { JBig2ArithCtx() : MPS(0), I(0) {} unsigned int MPS; unsigned int I; }; class CJBig2_ArithDecoder { public: explicit CJBig2_ArithDecoder(CJBig2_BitStream* pStream); ~CJBig2_ArithDecoder(); int DECODE(JBig2ArithCtx* pCX); bool IsComplete() const { return m_Complete; } private: void BYTEIN(); void ReadValueA(); bool m_Complete; uint8_t m_B; unsigned int m_C; unsigned int m_A; unsigned int m_CT; CFX_UnownedPtr<CJBig2_BitStream> const m_pStream; }; #endif // CORE_FXCODEC_JBIG2_JBIG2_ARITHDECODER_H_