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22 <TITLE>Generic Image Library: dynamic_io.hpp Source File
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40 <div class=
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41 <h1>dynamic_io.hpp
</h1><a href=
"g_i_l_0085.html">Go to the documentation of this file.
</a><div class=
"fragment"><pre class=
"fragment"><a name=
"l00001"></a>00001 <span class=
"comment">/*
</span>
42 <a name=
"l00002"></a>00002 <span class=
"comment"> Copyright
2005-
2007 Adobe Systems Incorporated
</span>
43 <a name=
"l00003"></a>00003 <span class=
"comment"> </span>
44 <a name=
"l00004"></a>00004 <span class=
"comment"> Use, modification and distribution are subject to the Boost Software License,
</span>
45 <a name=
"l00005"></a>00005 <span class=
"comment"> Version
1.0. (See accompanying file LICENSE_1_0.txt or copy at
</span>
46 <a name=
"l00006"></a>00006 <span class=
"comment"> http://www.boost.org/LICENSE_1_0.txt).
</span>
47 <a name=
"l00007"></a>00007 <span class=
"comment"></span>
48 <a name=
"l00008"></a>00008 <span class=
"comment"> See http://opensource.adobe.com/gil for most recent version including documentation.
</span>
49 <a name=
"l00009"></a>00009 <span class=
"comment">*/
</span>
50 <a name=
"l00010"></a>00010 <span class=
"comment">/*************************************************************************************************/
</span>
51 <a name=
"l00011"></a>00011
52 <a name=
"l00012"></a>00012 <span class=
"preprocessor">#ifndef GIL_DYNAMIC_IO_H
</span>
53 <a name=
"l00013"></a>00013 <span class=
"preprocessor"></span><span class=
"preprocessor">#define GIL_DYNAMIC_IO_H
</span>
54 <a name=
"l00014"></a>00014 <span class=
"preprocessor"></span>
55 <a name=
"l00017"></a>00017 <span class=
"comment">//
</span>
56 <a name=
"l00021"></a>00021 <span class=
"comment"></span>
57 <a name=
"l00022"></a>00022 <span class=
"preprocessor">#include
<boost/mpl/at.hpp
></span>
58 <a name=
"l00023"></a>00023 <span class=
"preprocessor">#include
<boost/mpl/size.hpp
></span>
59 <a name=
"l00024"></a>00024 <span class=
"preprocessor">#include
"../../gil_config.hpp"</span>
60 <a name=
"l00025"></a>00025 <span class=
"preprocessor">#include
"<a class="code
" href="io__error_8hpp.html
" title="Handle input-output errors.
">io_error.hpp</a>"</span>
61 <a name=
"l00026"></a>00026 <span class=
"preprocessor">#include
"../dynamic_image/any_image.hpp"</span>
62 <a name=
"l00027"></a>00027
63 <a name=
"l00028"></a>00028 <span class=
"keyword">namespace
</span>boost {
<span class=
"keyword">namespace
</span>gil {
64 <a name=
"l00029"></a>00029
65 <a name=
"l00030"></a>00030 <span class=
"keyword">namespace
</span>detail {
66 <a name=
"l00031"></a>00031
67 <a name=
"l00032"></a>00032 <span class=
"keyword">template
</span> <<span class=
"keywordtype">long
</span> N
>
68 <a name=
"l00033"></a>00033 <span class=
"keyword">struct
</span>construct_matched_t {
69 <a name=
"l00034"></a>00034 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Images,
<span class=
"keyword">typename
</span> Pred
>
70 <a name=
"l00035"></a>00035 <span class=
"keyword">static
</span> <span class=
"keywordtype">bool
</span> apply(any_image
<Images
>& im,Pred pred) {
71 <a name=
"l00036"></a>00036 <span class=
"keywordflow">if
</span> (pred.template apply
<<span class=
"keyword">typename
</span> mpl::at_c
<Images,N-
1>::type
>()) {
72 <a name=
"l00037"></a>00037 <span class=
"keyword">typename
</span> mpl::at_c
<Images,N-
1>::type x;
73 <a name=
"l00038"></a>00038 im.move_in(x);
74 <a name=
"l00039"></a>00039 <span class=
"keywordflow">return
</span> <span class=
"keyword">true
</span>;
75 <a name=
"l00040"></a>00040 }
<span class=
"keywordflow">else
</span> <span class=
"keywordflow">return
</span> construct_matched_t
<N-
1>::apply(im,pred);
76 <a name=
"l00041"></a>00041 }
77 <a name=
"l00042"></a>00042 };
78 <a name=
"l00043"></a>00043 <span class=
"keyword">template
</span> <>
79 <a name=
"l00044"></a>00044 <span class=
"keyword">struct
</span>construct_matched_t
<0> {
80 <a name=
"l00045"></a>00045 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Images,
<span class=
"keyword">typename
</span> Pred
>
81 <a name=
"l00046"></a>00046 <span class=
"keyword">static
</span> <span class=
"keywordtype">bool
</span> apply(any_image
<Images
>&,Pred) {
<span class=
"keywordflow">return
</span> <span class=
"keyword">false
</span>;}
82 <a name=
"l00047"></a>00047 };
83 <a name=
"l00048"></a>00048
84 <a name=
"l00049"></a>00049 <span class=
"comment">// A function object that can be passed to apply_operation.
</span>
85 <a name=
"l00050"></a>00050 <span class=
"comment">// Given a predicate IsSupported taking a view type and returning an MPL boolean,
</span>
86 <a name=
"l00051"></a>00051 <span class=
"comment">// calls the apply method of OpClass with the view if the given view IsSupported, or throws an exception otherwise
</span>
87 <a name=
"l00052"></a>00052 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> IsSupported,
<span class=
"keyword">typename
</span> OpClass
>
88 <a name=
"l00053"></a>00053 <span class=
"keyword">class
</span>dynamic_io_fnobj {
89 <a name=
"l00054"></a>00054 OpClass* _op;
90 <a name=
"l00055"></a>00055
91 <a name=
"l00056"></a>00056 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> View
>
92 <a name=
"l00057"></a>00057 <span class=
"keywordtype">void
</span> apply(
<span class=
"keyword">const
</span> View
& <a class=
"code" href=
"g_i_l_0135.html#g55e45a15dddfc0d870c2f7fb9739cb2e" title=
"Returns the non-constant-pixel view of any image. The returned view is any view.">view
</a>,mpl::true_ ) {_op-
>apply(view);}
93 <a name=
"l00058"></a>00058 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> View
>
94 <a name=
"l00059"></a>00059 <span class=
"keywordtype">void
</span> apply(
<span class=
"keyword">const
</span> View
& view,mpl::false_) {io_error(
<span class=
"stringliteral">"dynamic_io: unsupported view type for the given file format"</span>);}
95 <a name=
"l00060"></a>00060 <span class=
"keyword">public
</span>:
96 <a name=
"l00061"></a>00061 dynamic_io_fnobj(OpClass* op) : _op(op) {}
97 <a name=
"l00062"></a>00062
98 <a name=
"l00063"></a>00063 <span class=
"keyword">typedef
</span> <span class=
"keywordtype">void
</span> result_type;
99 <a name=
"l00064"></a>00064
100 <a name=
"l00065"></a>00065 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> View
>
101 <a name=
"l00066"></a>00066 <span class=
"keywordtype">void
</span> operator()(
<span class=
"keyword">const
</span> View
& view) {apply(view,
<span class=
"keyword">typename
</span> IsSupported::template apply
<View
>::type());}
102 <a name=
"l00067"></a>00067 };
103 <a name=
"l00068"></a>00068
104 <a name=
"l00069"></a>00069 }
<span class=
"comment">// namespace detail
</span>
105 <a name=
"l00070"></a>00070
106 <a name=
"l00073"></a>00073 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Images,
<span class=
"keyword">typename
</span> Pred
>
107 <a name=
"l00074"></a>00074 <span class=
"keyword">inline
</span> <span class=
"keywordtype">bool
</span> construct_matched(any_image
<Images
>& im,Pred pred) {
108 <a name=
"l00075"></a>00075 <span class=
"keywordflow">return
</span> detail::construct_matched_t
<mpl::size
<Images
>::value
>::apply(im,pred);
109 <a name=
"l00076"></a>00076 }
110 <a name=
"l00077"></a>00077
111 <a name=
"l00078"></a>00078 } }
<span class=
"comment">// namespace boost::gil
</span>
112 <a name=
"l00079"></a>00079
113 <a name=
"l00080"></a>00080 <span class=
"preprocessor">#endif
</span>
115 <hr size=
"1"><address style=
"text-align: right;"><small>Generated on Sat May
2 13:
50:
13 2009 for Generic Image Library by
116 <a href=
"http://www.doxygen.org/index.html">
117 <img src=
"doxygen.png" alt=
"doxygen" align=
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"0"></a> 1.5.6 </small></address>