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diff --git a/pdf/xpdf/JBIG2Stream.h b/pdf/xpdf/JBIG2Stream.h
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+//========================================================================
+//
+// JBIG2Stream.h
+//
+// Copyright 2002 Glyph & Cog, LLC
+//
+//========================================================================
+
+#ifndef JBIG2STREAM_H
+#define JBIG2STREAM_H
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma interface
+#endif
+
+#include "gtypes.h"
+#include "Object.h"
+#include "Stream.h"
+
+class GList;
+class JBIG2Segment;
+class JBIG2Bitmap;
+class JBIG2ArithmeticDecoder;
+class JBIG2ArithmeticDecoderStats;
+class JBIG2HuffmanDecoder;
+struct JBIG2HuffmanTable;
+class JBIG2MMRDecoder;
+
+//------------------------------------------------------------------------
+
+class JBIG2Stream: public FilterStream {
+public:
+
+  JBIG2Stream(Stream *strA, Object *globalsStream);
+  virtual ~JBIG2Stream();
+  virtual StreamKind getKind() { return strJBIG2; }
+  virtual void reset();
+  virtual int getChar();
+  virtual int lookChar();
+  virtual GString *getPSFilter(char *indent);
+  virtual GBool isBinary(GBool last = gTrue);
+
+private:
+
+  void readSegments();
+  void readSymbolDictSeg(Guint segNum, Guint length,
+			 Guint *refSegs, Guint nRefSegs);
+  void readTextRegionSeg(Guint segNum, GBool imm,
+			 GBool lossless, Guint length,
+			 Guint *refSegs, Guint nRefSegs);
+  JBIG2Bitmap *readTextRegion(GBool huff, GBool refine,
+			      int w, int h,
+			      Guint numInstances,
+			      Guint logStrips,
+			      int numSyms,
+			      JBIG2HuffmanTable *symCodeTab,
+			      Guint symCodeLen,
+			      JBIG2Bitmap **syms,
+			      Guint defPixel, Guint combOp,
+			      Guint transposed, Guint refCorner,
+			      Guint sOffset,
+			      JBIG2HuffmanTable *huffFSTable,
+			      JBIG2HuffmanTable *huffDSTable,
+			      JBIG2HuffmanTable *huffDTTable,
+			      JBIG2HuffmanTable *huffRDWTable,
+			      JBIG2HuffmanTable *huffRDHTable,
+			      JBIG2HuffmanTable *huffRDXTable,
+			      JBIG2HuffmanTable *huffRDYTable,
+			      JBIG2HuffmanTable *huffRSizeTable,
+			      Guint templ,
+			      int *atx, int *aty);
+  void readPatternDictSeg(Guint segNum, Guint length);
+  void readHalftoneRegionSeg(Guint segNum, GBool imm,
+			     GBool lossless, Guint length,
+			     Guint *refSegs, Guint nRefSegs);
+  void readGenericRegionSeg(Guint segNum, GBool imm,
+			    GBool lossless, Guint length);
+  JBIG2Bitmap *readGenericBitmap(GBool mmr, int w, int h,
+				 int templ, GBool tpgdOn,
+				 GBool useSkip, JBIG2Bitmap *skip,
+				 int *atx, int *aty,
+				 int mmrDataLength);
+  void readGenericRefinementRegionSeg(Guint segNum, GBool imm,
+				      GBool lossless, Guint length,
+				      Guint *refSegs,
+				      Guint nRefSegs);
+  JBIG2Bitmap *readGenericRefinementRegion(int w, int h,
+					   int templ, GBool tpgrOn,
+					   JBIG2Bitmap *refBitmap,
+					   int refDX, int refDY,
+					   int *atx, int *aty);
+  void readPageInfoSeg(Guint length);
+  void readEndOfStripeSeg(Guint length);
+  void readProfilesSeg(Guint length);
+  void readCodeTableSeg(Guint segNum, Guint length);
+  void readExtensionSeg(Guint length);
+  JBIG2Segment *findSegment(Guint segNum);
+  void discardSegment(Guint segNum);
+  void resetGenericStats(Guint templ,
+				   JBIG2ArithmeticDecoderStats *prevStats);
+  void resetRefinementStats(Guint templ,
+				      JBIG2ArithmeticDecoderStats *prevStats);
+  void resetIntStats(int symCodeLen);
+  GBool readUByte(Guint *x);
+  GBool readByte(int *x);
+  GBool readUWord(Guint *x);
+  GBool readULong(Guint *x);
+  GBool readLong(int *x);
+
+  Guint pageW, pageH, curPageH;
+  Guint pageDefPixel;
+  JBIG2Bitmap *pageBitmap;
+  Guint defCombOp;
+  GList *segments;		// [JBIG2Segment]
+  GList *globalSegments;	// [JBIG2Segment]
+  Stream *curStr;
+  Guchar *dataPtr;
+  Guchar *dataEnd;
+
+  JBIG2ArithmeticDecoder *arithDecoder;
+  JBIG2ArithmeticDecoderStats *genericRegionStats;
+  JBIG2ArithmeticDecoderStats *refinementRegionStats;
+  JBIG2ArithmeticDecoderStats *iadhStats;
+  JBIG2ArithmeticDecoderStats *iadwStats;
+  JBIG2ArithmeticDecoderStats *iaexStats;
+  JBIG2ArithmeticDecoderStats *iaaiStats;
+  JBIG2ArithmeticDecoderStats *iadtStats;
+  JBIG2ArithmeticDecoderStats *iaitStats;
+  JBIG2ArithmeticDecoderStats *iafsStats;
+  JBIG2ArithmeticDecoderStats *iadsStats;
+  JBIG2ArithmeticDecoderStats *iardxStats;
+  JBIG2ArithmeticDecoderStats *iardyStats;
+  JBIG2ArithmeticDecoderStats *iardwStats;
+  JBIG2ArithmeticDecoderStats *iardhStats;
+  JBIG2ArithmeticDecoderStats *iariStats;
+  JBIG2ArithmeticDecoderStats *iaidStats;
+  JBIG2HuffmanDecoder *huffDecoder;
+  JBIG2MMRDecoder *mmrDecoder;
+};
+
+#endif