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// 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_SEGMENT_H_
#define CORE_FXCODEC_JBIG2_JBIG2_SEGMENT_H_
#include "core/fxcodec/jbig2/JBig2_Define.h"
#include "core/fxcodec/jbig2/JBig2_HuffmanTable.h"
#include "core/fxcodec/jbig2/JBig2_PatternDict.h"
#include "core/fxcodec/jbig2/JBig2_SymbolDict.h"
#define JBIG2_GET_INT32(buf) \
(((buf)[0] << 24) | ((buf)[1] << 16) | ((buf)[2] << 8) | (buf)[3])
#define JBIG2_GET_INT16(buf) (((buf)[0] << 8) | (buf)[1])
typedef enum {
JBIG2_SEGMENT_HEADER_UNPARSED,
JBIG2_SEGMENT_DATA_UNPARSED,
JBIG2_SEGMENT_PARSE_COMPLETE,
JBIG2_SEGMENT_PAUSED,
JBIG2_SEGMENT_ERROR
} JBig2_SegmentState;
typedef enum {
JBIG2_VOID_POINTER = 0,
JBIG2_IMAGE_POINTER,
JBIG2_SYMBOL_DICT_POINTER,
JBIG2_PATTERN_DICT_POINTER,
JBIG2_HUFFMAN_TABLE_POINTER
} JBig2_ResultType;
class CJBig2_Segment {
public:
CJBig2_Segment();
~CJBig2_Segment();
FX_DWORD m_dwNumber;
union {
struct {
uint8_t type : 6;
uint8_t page_association_size : 1;
uint8_t deferred_non_retain : 1;
} s;
uint8_t c;
} m_cFlags;
int32_t m_nReferred_to_segment_count;
FX_DWORD* m_pReferred_to_segment_numbers;
FX_DWORD m_dwPage_association;
FX_DWORD m_dwData_length;
FX_DWORD m_dwHeader_Length;
FX_DWORD m_dwObjNum;
FX_DWORD m_dwDataOffset;
JBig2_SegmentState m_State;
JBig2_ResultType m_nResultType;
union {
CJBig2_SymbolDict* sd;
CJBig2_PatternDict* pd;
CJBig2_Image* im;
CJBig2_HuffmanTable* ht;
void* vd;
} m_Result;
};
#endif // CORE_FXCODEC_JBIG2_JBIG2_SEGMENT_H_
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