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diff --git a/lib/pdfstream.hh b/lib/pdfstream.hh
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+//  pdfstream.hh -- image streams producing PDF files
+//  Copyright (C) 2008  SEIKO EPSON CORPORATION
+//
+//  This file is part of the 'iscan' program.
+//
+//  The 'iscan' program is free-ish software.
+//  You can redistribute it and/or modify it under the terms of the GNU
+//  General Public License as published by the Free Software Foundation;
+//  either version 2 of the License or at your option any later version.
+//
+//  This program is distributed in the hope that it will be useful, but
+//  WITHOUT ANY WARRANTY;  without even the implied warranty of FITNESS
+//  FOR A PARTICULAR PURPOSE or MERCHANTABILITY.
+//  See the GNU General Public License for more details.
+//
+//  You should have received a verbatim copy of the GNU General Public
+//  License along with this program; if not, write to:
+//
+//      Free Software Foundation, Inc.
+//      59 Temple Place, Suite 330
+//      Boston, MA  02111-1307  USA
+//
+//  As a special exception, the copyright holders give permission
+//  to link the code of this program with the esmod library and
+//  distribute linked combinations including the two.  You must obey
+//  the GNU General Public License in all respects for all of the
+//  code used other than esmod.
+
+#ifndef iscan_pdfstream_hh_included
+#define iscan_pdfstream_hh_included
+
+#ifndef __cplusplus
+#error "This is a C++ header file; use a C++ compiler to compile it."
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "imgstream.hh"
+
+#include "pdf/writer.hh"
+#include "pdf/dictionary.hh"
+#include "pdf/array.hh"
+#include "pdf/primitive.hh"
+#include "fax-encoder.hh"
+
+#include <string>
+
+namespace iscan
+{
+  using std::string;
+
+class pdfstream : public imgstream
+{
+
+public:
+  typedef basic_imgstream::byte_type byte_type;
+  typedef basic_imgstream::size_type size_type;
+
+private:
+  bool _need_page_trailer;
+  size_type _data_size;
+  size_type _pdf_h_sz; // scaled size to fit on a page at 72 dpi
+  size_type _pdf_v_sz; // but better to set the dpi in the PDF file,
+                       // there is some way to do that, I read it in the spec!
+
+  pdf::writer *_doc;
+  pdf::dictionary *_pages;
+  pdf::array *_page_list;
+  pdf::dictionary *_trailer;
+
+  size_type _row;
+  pdf::primitive *_img_height_obj;
+
+  basic_imgstream *_stream;
+  FILE *_file;
+
+  bool _do_jpeg;
+  fax_encoder *_g3;
+  bool _rotate_180;
+
+public:
+  static bool is_usable ();
+
+  explicit pdfstream (FILE *fp, bool match_direction = false);
+
+  virtual ~pdfstream ();
+
+  virtual imgstream& write (const byte_type *line, size_type n);
+
+  virtual void next ();
+  virtual void rotate_180 (bool yes);
+
+private:
+  void init();
+  void write_header ();
+  void write_page_header ();
+  void write_page_trailer ();
+  void write_image_object (pdf::dictionary& image, std::string name);
+};
+
+}       // namespace iscan
+
+#endif  /* iscan_pdfstream_hh_included */