// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef CORE_FXCODEC_JBIG2_JBIG2_SEGMENT_H_
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#define CORE_FXCODEC_JBIG2_JBIG2_SEGMENT_H_
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#include "core/fxcodec/jbig2/JBig2_Define.h"
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#include "core/fxcodec/jbig2/JBig2_HuffmanTable.h"
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#include "core/fxcodec/jbig2/JBig2_PatternDict.h"
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#include "core/fxcodec/jbig2/JBig2_SymbolDict.h"
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#define JBIG2_GET_INT32(buf) \
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(((buf)[0] << 24) | ((buf)[1] << 16) | ((buf)[2] << 8) | (buf)[3])
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#define JBIG2_GET_INT16(buf) (((buf)[0] << 8) | (buf)[1])
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typedef enum {
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JBIG2_SEGMENT_HEADER_UNPARSED,
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JBIG2_SEGMENT_DATA_UNPARSED,
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JBIG2_SEGMENT_PARSE_COMPLETE,
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JBIG2_SEGMENT_PAUSED,
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JBIG2_SEGMENT_ERROR
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} JBig2_SegmentState;
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typedef enum {
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JBIG2_VOID_POINTER = 0,
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JBIG2_IMAGE_POINTER,
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JBIG2_SYMBOL_DICT_POINTER,
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JBIG2_PATTERN_DICT_POINTER,
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JBIG2_HUFFMAN_TABLE_POINTER
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} JBig2_ResultType;
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class CJBig2_Segment {
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public:
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CJBig2_Segment();
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~CJBig2_Segment();
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uint32_t m_dwNumber;
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union {
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struct {
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uint8_t type : 6;
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uint8_t page_association_size : 1;
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uint8_t deferred_non_retain : 1;
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} s;
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uint8_t c;
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} m_cFlags;
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int32_t m_nReferred_to_segment_count;
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uint32_t* m_pReferred_to_segment_numbers;
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uint32_t m_dwPage_association;
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uint32_t m_dwData_length;
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uint32_t m_dwHeader_Length;
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uint32_t m_dwObjNum;
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uint32_t m_dwDataOffset;
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JBig2_SegmentState m_State;
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JBig2_ResultType m_nResultType;
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union {
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CJBig2_SymbolDict* sd;
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CJBig2_PatternDict* pd;
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CJBig2_Image* im;
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CJBig2_HuffmanTable* ht;
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void* vd;
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} m_Result;
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};
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#endif // CORE_FXCODEC_JBIG2_JBIG2_SEGMENT_H_
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