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An Image Processing Platform
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save_header.hh
1 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
2 // 2011 EPITA Research and Development Laboratory (LRDE)
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4 // This file is part of Olena.
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26 
27 #ifndef MLN_IO_PNM_SAVE_HEADER_HH
28 # define MLN_IO_PNM_SAVE_HEADER_HH
29 
33 
34 # include <iostream>
35 # include <fstream>
36 
37 # include <mln/version.hh>
38 
39 # include <mln/io/pnm/max_component.hh>
40 
41 # include <mln/value/rgb.hh>
42 # include <mln/geom/nrows.hh>
43 # include <mln/geom/ncols.hh>
44 
45 
46 namespace mln
47 {
48 
49  namespace io
50  {
51 
52 # ifndef MLN_INCLUDE_ONLY
53 
54  namespace pnm
55  {
56 
57  template <typename V>
58  inline
59  void save_max_val(V&, std::ofstream& file)
60  {
61  file << max_component(V()) << std::endl;
62  }
63 
64  inline
65  void save_max_val(bool&, std::ofstream&)
66  {
67  }
68 
69  template <typename I>
70  inline
71  void save_header(char type,
72  const I& ima, const std::string& filename,
73  std::ofstream& file)
74  {
75  if (! file)
76  {
77  std::cerr << "error: cannot open file '" << filename
78  << "'!";
79  abort();
80  }
81  file << "P" << type << std::endl;
82  // We have a two-line comment because xv is buggy for some
83  // tiny binary images and their workaround is to have such a
84  // two-line comment...
85  file << "# Generated by " OLN_PACKAGE_STRING " (" OLN_PACKAGE_URL ")"
86  << std::endl
87  << "# " OLN_PACKAGE_AUTHORS << std::endl;
88  file << geom::ncols(ima) << ' ' << geom::nrows(ima) << std::endl;
89 
90  mln_value(I) i;
91  save_max_val(i, file);
92  }
93 
94  } // end of namespace mln::io::pnm
95 
96 
97 # endif // ! MLN_INCLUDE_ONLY
98 
99  } // end of namespace mln::io
100 
101 } // end of namespace mln
102 
103 
104 #endif // ! MLN_IO_PNM_SAVE_HEADER_HH