diff options
Diffstat (limited to 'core/src/fxcodec/jbig2/JBig2_Context.h')
| -rw-r--r-- | core/src/fxcodec/jbig2/JBig2_Context.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/core/src/fxcodec/jbig2/JBig2_Context.h b/core/src/fxcodec/jbig2/JBig2_Context.h new file mode 100644 index 0000000000..369dba3512 --- /dev/null +++ b/core/src/fxcodec/jbig2/JBig2_Context.h @@ -0,0 +1,135 @@ +// 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 _JBIG2_CONTEXT_H_
+#define _JBIG2_CONTEXT_H_
+#include "JBig2_Module.h"
+#include "JBig2_List.h"
+#include "JBig2_Segment.h"
+#include "JBig2_Page.h"
+#include "JBig2_GeneralDecoder.h"
+#include "../../../include/fxcodec/fx_codec_def.h"
+#include "../../../include/fxcrt/fx_basic.h"
+typedef enum {
+ JBIG2_OUT_OF_PAGE = 0,
+ JBIG2_IN_PAGE,
+} JBig2State;
+#define JBIG2_SUCCESS 0
+#define JBIG2_FAILED -1
+#define JBIG2_ERROR_TOO_SHORT -2
+#define JBIG2_ERROR_FETAL -3
+#define JBIG2_END_OF_PAGE 2
+#define JBIG2_END_OF_FILE 3
+#define JBIG2_ERROR_FILE_FORMAT -4
+#define JBIG2_ERROR_STREAM_TYPE -5
+#define JBIG2_ERROR_LIMIT -6
+#define JBIG2_FILE_STREAM 0
+#define JBIG2_SQUENTIAL_STREAM 1
+#define JBIG2_RANDOM_STREAM 2
+#define JBIG2_EMBED_STREAM 3
+#define JBIG2_MIN_SEGMENT_SIZE 11
+class CJBig2_Context : public CJBig2_Object
+{
+public:
+
+ static CJBig2_Context *CreateContext(CJBig2_Module *pModule, FX_BYTE *pGlobalData, FX_DWORD dwGlobalLength,
+ FX_BYTE *pData, FX_DWORD dwLength, FX_INT32 nStreamType, IFX_Pause* pPause = NULL);
+
+ static void DestroyContext(CJBig2_Context *pContext);
+
+ FX_INT32 getFirstPage(FX_BYTE *pBuf, FX_INT32 width, FX_INT32 height, FX_INT32 stride, IFX_Pause* pPause);
+
+ FX_INT32 getNextPage(FX_BYTE *pBuf, FX_INT32 width, FX_INT32 height, FX_INT32 stride, IFX_Pause* pPause);
+
+ FX_INT32 getFirstPage(CJBig2_Image **image, IFX_Pause* pPause);
+
+ FX_INT32 getNextPage(CJBig2_Image **image, IFX_Pause* pPause);
+ FX_INT32 Continue(IFX_Pause* pPause);
+ FXCODEC_STATUS GetProcessiveStatus()
+ {
+ return m_ProcessiveStatus;
+ };
+private:
+
+ CJBig2_Context(FX_BYTE *pGlobalData, FX_DWORD dwGlobalLength,
+ FX_BYTE *pData, FX_DWORD dwLength, FX_INT32 nStreamType, IFX_Pause* pPause);
+
+ ~CJBig2_Context();
+
+ FX_INT32 decodeFile(IFX_Pause* pPause);
+
+ FX_INT32 decode_SquentialOrgnazation(IFX_Pause* pPause);
+
+ FX_INT32 decode_EmbedOrgnazation(IFX_Pause* pPause);
+
+ FX_INT32 decode_RandomOrgnazation_FirstPage(IFX_Pause* pPause);
+
+ FX_INT32 decode_RandomOrgnazation(IFX_Pause* pPause);
+
+ CJBig2_Segment *findSegmentByNumber(FX_DWORD dwNumber);
+
+ CJBig2_Segment *findReferredSegmentByTypeAndIndex(CJBig2_Segment *pSegment, FX_BYTE cType, FX_INT32 nIndex);
+
+ FX_INT32 parseSegmentHeader(CJBig2_Segment *pSegment);
+
+ FX_INT32 parseSegmentData(CJBig2_Segment *pSegment, IFX_Pause* pPause);
+ FX_INT32 ProcessiveParseSegmentData(CJBig2_Segment *pSegment, IFX_Pause* pPause);
+
+ FX_INT32 parseSymbolDict(CJBig2_Segment *pSegment, IFX_Pause* pPause);
+
+ FX_INT32 parseTextRegion(CJBig2_Segment *pSegment);
+
+ FX_INT32 parsePatternDict(CJBig2_Segment *pSegment, IFX_Pause* pPause);
+
+ FX_INT32 parseHalftoneRegion(CJBig2_Segment *pSegment, IFX_Pause* pPause);
+
+ FX_INT32 parseGenericRegion(CJBig2_Segment *pSegment, IFX_Pause* pPause);
+
+ FX_INT32 parseGenericRefinementRegion(CJBig2_Segment *pSegment);
+
+ FX_INT32 parseTable(CJBig2_Segment *pSegment);
+
+ FX_INT32 parseRegionInfo(JBig2RegionInfo *pRI);
+
+
+
+ JBig2HuffmanCode *decodeSymbolIDHuffmanTable(CJBig2_BitStream *pStream, FX_DWORD SBNUMSYMS);
+
+ void huffman_assign_code(int* CODES, int* PREFLEN, int NTEMP);
+
+ void huffman_assign_code(JBig2HuffmanCode *SBSYMCODES, int NTEMP);
+
+private:
+
+ CJBig2_Context *m_pGlobalContext;
+
+ FX_INT32 m_nStreamType;
+
+ CJBig2_BitStream *m_pStream;
+
+ FX_INT32 m_nState;
+
+ CJBig2_List<CJBig2_Segment> *m_pSegmentList;
+
+ CJBig2_List<JBig2PageInfo> *m_pPageInfoList;
+
+ CJBig2_Image *m_pPage;
+
+ FX_BOOL m_bBufSpecified;
+
+ FX_INT32 m_nSegmentDecoded;
+ IFX_Pause* m_pPause;
+ FX_INT32 m_PauseStep;
+ FXCODEC_STATUS m_ProcessiveStatus;
+ FX_BOOL m_bFirstPage;
+ CJBig2_ArithDecoder *m_pArithDecoder;
+ CJBig2_GRDProc *m_pGRD;
+ JBig2ArithCtx *m_gbContext;
+ CJBig2_Segment *m_pSegment;
+ FX_DWORD m_dwOffset;
+ JBig2RegionInfo m_ri;
+};
+#endif
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