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 _JBIG2_SEGMENT_H_ 8 #define _JBIG2_SEGMENT_H_ 9 10 #include "JBig2_Define.h" 11 #include "JBig2_HuffmanTable.h" 12 #include "JBig2_PatternDict.h" 13 #include "JBig2_SymbolDict.h" 14 15 #define JBIG2_GET_INT32(buf) \ 16 (((buf)[0] << 24) | ((buf)[1] << 16) | ((buf)[2] << 8) | (buf)[3]) 17 #define JBIG2_GET_INT16(buf) (((buf)[0] << 8) | (buf)[1]) 18 typedef enum { 19 JBIG2_SEGMENT_HEADER_UNPARSED, 20 JBIG2_SEGMENT_DATA_UNPARSED, 21 JBIG2_SEGMENT_PARSE_COMPLETE, 22 JBIG2_SEGMENT_PAUSED, 23 JBIG2_SEGMENT_ERROR 24 } JBig2_SegmentState; 25 typedef enum { 26 JBIG2_VOID_POINTER = 0, 27 JBIG2_IMAGE_POINTER, 28 JBIG2_SYMBOL_DICT_POINTER, 29 JBIG2_PATTERN_DICT_POINTER, 30 JBIG2_HUFFMAN_TABLE_POINTER 31 } JBig2_ResultType; 32 class CJBig2_Segment { 33 public: 34 CJBig2_Segment(); 35 36 ~CJBig2_Segment(); 37 38 FX_DWORD m_dwNumber; 39 union { 40 struct { 41 uint8_t type : 6; 42 uint8_t page_association_size : 1; 43 uint8_t deferred_non_retain : 1; 44 } s; 45 uint8_t c; 46 } m_cFlags; 47 int32_t m_nReferred_to_segment_count; 48 FX_DWORD* m_pReferred_to_segment_numbers; 49 FX_DWORD m_dwPage_association; 50 FX_DWORD m_dwData_length; 51 52 FX_DWORD m_dwHeader_Length; 53 FX_DWORD m_dwObjNum; 54 FX_DWORD m_dwDataOffset; 55 JBig2_SegmentState m_State; 56 JBig2_ResultType m_nResultType; 57 union { 58 CJBig2_SymbolDict* sd; 59 CJBig2_PatternDict* pd; 60 CJBig2_Image* im; 61 CJBig2_HuffmanTable* ht; 62 void* vd; 63 } m_Result; 64 }; 65 #endif 66