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40 <div class=
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41 <h1>jpeg_dynamic_io.hpp
</h1><a href=
"g_i_l_0232.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
51 <a name=
"l00011"></a>00011 <span class=
"comment">/*************************************************************************************************/
</span>
52 <a name=
"l00012"></a>00012
53 <a name=
"l00013"></a>00013 <span class=
"preprocessor">#ifndef GIL_JPEG_DYNAMIC_IO_H
</span>
54 <a name=
"l00014"></a>00014 <span class=
"preprocessor"></span><span class=
"preprocessor">#define GIL_JPEG_DYNAMIC_IO_H
</span>
55 <a name=
"l00015"></a>00015 <span class=
"preprocessor"></span>
56 <a name=
"l00023"></a>00023
57 <a name=
"l00024"></a>00024 <span class=
"preprocessor">#include
<stdio.h
></span>
58 <a name=
"l00025"></a>00025 <span class=
"preprocessor">#include
<string
></span>
59 <a name=
"l00026"></a>00026 <span class=
"preprocessor">#include
<boost/mpl/bool.hpp
></span>
60 <a name=
"l00027"></a>00027 <span class=
"preprocessor">#include
<boost/shared_ptr.hpp
></span>
61 <a name=
"l00028"></a>00028 <span class=
"preprocessor">#include
"../dynamic_image/dynamic_image_all.hpp"</span>
62 <a name=
"l00029"></a>00029 <span class=
"preprocessor">#include
"<a class="code
" href="io__error_8hpp.html
" title="Handle input-output errors.
">io_error.hpp</a>"</span>
63 <a name=
"l00030"></a>00030
64 <a name=
"l00031"></a>00031 <span class=
"preprocessor">#include
"<a class="code
" href="jpeg__io_8hpp.html
" title="Support for reading and writing JPEG files Requires libjpeg.
">jpeg_io.hpp</a>"</span>
65 <a name=
"l00032"></a>00032 <span class=
"preprocessor">#include
"<a class="code
" href="g_i_l_0235.html
" title="Internal support for reading and writing JPEG files.
">jpeg_io_private.hpp</a>"</span>
66 <a name=
"l00033"></a>00033 <span class=
"preprocessor">#include
"<a class="code
" href="g_i_l_0085.html
" title="Generic io functions for dealing with dynamic images.
">dynamic_io.hpp</a>"</span>
67 <a name=
"l00034"></a>00034
68 <a name=
"l00035"></a>00035 <span class=
"keyword">namespace
</span>boost {
<span class=
"keyword">namespace
</span>gil {
69 <a name=
"l00036"></a>00036
70 <a name=
"l00037"></a>00037 <span class=
"keyword">namespace
</span>detail {
71 <a name=
"l00038"></a>00038
72 <a name=
"l00039"></a>00039 <span class=
"keyword">struct
</span>jpeg_write_is_supported {
73 <a name=
"l00040"></a>00040 <span class=
"keyword">template
</span><<span class=
"keyword">typename
</span> View
> <span class=
"keyword">struct
</span>apply
74 <a name=
"l00041"></a>00041 :
<span class=
"keyword">public
</span> mpl::bool_
<jpeg_write_support
<View
>::is_supported
> {};
75 <a name=
"l00042"></a>00042 };
76 <a name=
"l00043"></a>00043
77 <a name=
"l00044"></a>00044 <span class=
"keyword">class
</span>jpeg_writer_dynamic :
<span class=
"keyword">public
</span> jpeg_writer {
78 <a name=
"l00045"></a>00045 <span class=
"keywordtype">int
</span> _quality;
79 <a name=
"l00046"></a>00046 <span class=
"keyword">public
</span>:
80 <a name=
"l00047"></a>00047 jpeg_writer_dynamic(FILE* file,
<span class=
"keywordtype">int
</span> quality=
100) : jpeg_writer(file) , _quality(quality) {}
81 <a name=
"l00048"></a>00048 jpeg_writer_dynamic(
<span class=
"keyword">const
</span> <span class=
"keywordtype">char
</span>* filename,
<span class=
"keywordtype">int
</span> quality=
100) : jpeg_writer(filename), _quality(quality) {}
82 <a name=
"l00049"></a>00049
83 <a name=
"l00050"></a>00050 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Views
>
84 <a name=
"l00051"></a>00051 <span class=
"keywordtype">void
</span> write_view(
<span class=
"keyword">const
</span> any_image_view
<Views
>& runtime_view) {
85 <a name=
"l00052"></a>00052 dynamic_io_fnobj
<jpeg_write_is_supported, jpeg_writer
> op(
<span class=
"keyword">this
</span>);
86 <a name=
"l00053"></a>00053 <a class=
"code" href=
"group___variant.html#g3dc0a90911c08815be11e1e49ec06037" title=
"Invokes a generic constant operation (represented as a binary function object) on...">apply_operation
</a>(runtime_view,op);
87 <a name=
"l00054"></a>00054 }
88 <a name=
"l00055"></a>00055 };
89 <a name=
"l00056"></a>00056
90 <a name=
"l00057"></a>00057 <span class=
"keyword">class
</span>jpeg_type_format_checker {
91 <a name=
"l00058"></a>00058 J_COLOR_SPACE _color_type;
92 <a name=
"l00059"></a>00059 <span class=
"keyword">public
</span>:
93 <a name=
"l00060"></a>00060 jpeg_type_format_checker(J_COLOR_SPACE color_type_in) :
94 <a name=
"l00061"></a>00061 _color_type(color_type_in) {}
95 <a name=
"l00062"></a>00062 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Image
>
96 <a name=
"l00063"></a>00063 <span class=
"keywordtype">bool
</span> apply() {
97 <a name=
"l00064"></a>00064 <span class=
"keywordflow">return
</span> jpeg_read_support
<typename Image::view_t
>::color_type==_color_type;
98 <a name=
"l00065"></a>00065 }
99 <a name=
"l00066"></a>00066 };
100 <a name=
"l00067"></a>00067
101 <a name=
"l00068"></a>00068 <span class=
"keyword">struct
</span>jpeg_read_is_supported {
102 <a name=
"l00069"></a>00069 <span class=
"keyword">template
</span><<span class=
"keyword">typename
</span> View
> <span class=
"keyword">struct
</span>apply
103 <a name=
"l00070"></a>00070 :
<span class=
"keyword">public
</span> mpl::bool_
<jpeg_read_support
<View
>::is_supported
> {};
104 <a name=
"l00071"></a>00071 };
105 <a name=
"l00072"></a>00072
106 <a name=
"l00073"></a>00073 <span class=
"keyword">class
</span>jpeg_reader_dynamic :
<span class=
"keyword">public
</span> jpeg_reader {
107 <a name=
"l00074"></a>00074 <span class=
"keyword">public
</span>:
108 <a name=
"l00075"></a>00075 jpeg_reader_dynamic(FILE* file) : jpeg_reader(file) {}
109 <a name=
"l00076"></a>00076 jpeg_reader_dynamic(
<span class=
"keyword">const
</span> <span class=
"keywordtype">char
</span>* filename) : jpeg_reader(filename){}
110 <a name=
"l00077"></a>00077
111 <a name=
"l00078"></a>00078 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Images
>
112 <a name=
"l00079"></a>00079 <span class=
"keywordtype">void
</span> read_image(any_image
<Images
>& im) {
113 <a name=
"l00080"></a>00080 <span class=
"keywordflow">if
</span> (!construct_matched(im,detail::jpeg_type_format_checker(_cinfo.out_color_space))) {
114 <a name=
"l00081"></a>00081 io_error(
<span class=
"stringliteral">"jpeg_reader_dynamic::read_image(): no matching image type between those of the given any_image and that of the file"</span>);
115 <a name=
"l00082"></a>00082 }
<span class=
"keywordflow">else
</span> {
116 <a name=
"l00083"></a>00083 im.recreate(get_dimensions());
117 <a name=
"l00084"></a>00084 dynamic_io_fnobj
<jpeg_read_is_supported, jpeg_reader
> op(
<span class=
"keyword">this
</span>);
118 <a name=
"l00085"></a>00085 <a class=
"code" href=
"group___variant.html#g3dc0a90911c08815be11e1e49ec06037" title=
"Invokes a generic constant operation (represented as a binary function object) on...">apply_operation
</a>(
<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>(im),op);
119 <a name=
"l00086"></a>00086 }
120 <a name=
"l00087"></a>00087 }
121 <a name=
"l00088"></a>00088 };
122 <a name=
"l00089"></a>00089
123 <a name=
"l00090"></a>00090 }
<span class=
"comment">// namespace detail
</span>
124 <a name=
"l00091"></a>00091
125 <a name=
"l00092"></a>00092
126 <a name=
"l00098"></a>00098 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Images
>
127 <a name=
"l00099"></a><a class=
"code" href=
"g_i_l_0169.html#ga8d0be11619e190cef13ab79d7169398">00099</a> <span class=
"keyword">inline
</span> <span class=
"keywordtype">void
</span> <a class=
"code" href=
"g_i_l_0169.html#g02171bdd359b1fb5fc89ad34a0732494" title=
"Allocates a new image whose dimensions are determined by the given jpeg image file...">jpeg_read_image
</a>(
<span class=
"keyword">const
</span> <span class=
"keywordtype">char
</span>* filename,
<a class=
"code" href=
"g_i_l_0018.html" title=
"Represents a run-time specified image. Note it does NOT model ImageConcept.">any_image
<Images
></a>& im) {
128 <a name=
"l00100"></a>00100 detail::jpeg_reader_dynamic m(filename);
129 <a name=
"l00101"></a>00101 m.read_image(im);
130 <a name=
"l00102"></a>00102 }
131 <a name=
"l00103"></a>00103
132 <a name=
"l00106"></a>00106 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Images
>
133 <a name=
"l00107"></a><a class=
"code" href=
"g_i_l_0169.html#g4a8b5d2fd1fa5965dd12c20f8b983458">00107</a> <span class=
"keyword">inline
</span> <span class=
"keywordtype">void
</span> <a class=
"code" href=
"g_i_l_0169.html#g02171bdd359b1fb5fc89ad34a0732494" title=
"Allocates a new image whose dimensions are determined by the given jpeg image file...">jpeg_read_image
</a>(
<span class=
"keyword">const
</span> std::string
& filename,
<a class=
"code" href=
"g_i_l_0018.html" title=
"Represents a run-time specified image. Note it does NOT model ImageConcept.">any_image
<Images
></a>& im) {
134 <a name=
"l00108"></a>00108 <a class=
"code" href=
"g_i_l_0169.html#g02171bdd359b1fb5fc89ad34a0732494" title=
"Allocates a new image whose dimensions are determined by the given jpeg image file...">jpeg_read_image
</a>(filename.c_str(),im);
135 <a name=
"l00109"></a>00109 }
136 <a name=
"l00110"></a>00110
137 <a name=
"l00115"></a>00115 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Views
>
138 <a name=
"l00116"></a><a class=
"code" href=
"g_i_l_0169.html#g3a185bccf9e6716693003db876b25dde">00116</a> <span class=
"keyword">inline
</span> <span class=
"keywordtype">void
</span> <a class=
"code" href=
"g_i_l_0169.html#g63405962170c1f94d6318d46134db7f4" title=
"Saves the view to a jpeg file specified by the given jpeg image file name.">jpeg_write_view
</a>(
<span class=
"keyword">const
</span> <span class=
"keywordtype">char
</span>* filename,
<span class=
"keyword">const
</span> <a class=
"code" href=
"g_i_l_0020.html" title=
"Represents a run-time specified image view. Models HasDynamicXStepTypeConcept, HasDynamicYStepTypeCo...">any_image_view
<Views
></a>& runtime_view) {
139 <a name=
"l00117"></a>00117 detail::jpeg_writer_dynamic m(filename);
140 <a name=
"l00118"></a>00118 m.write_view(runtime_view);
141 <a name=
"l00119"></a>00119 }
142 <a name=
"l00120"></a>00120
143 <a name=
"l00123"></a>00123 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Views
>
144 <a name=
"l00124"></a><a class=
"code" href=
"g_i_l_0169.html#gd22217d98abdc6be2eb7e14a6593ea01">00124</a> <span class=
"keyword">inline
</span> <span class=
"keywordtype">void
</span> <a class=
"code" href=
"g_i_l_0169.html#g63405962170c1f94d6318d46134db7f4" title=
"Saves the view to a jpeg file specified by the given jpeg image file name.">jpeg_write_view
</a>(
<span class=
"keyword">const
</span> std::string
& filename,
<span class=
"keyword">const
</span> <a class=
"code" href=
"g_i_l_0020.html" title=
"Represents a run-time specified image view. Models HasDynamicXStepTypeConcept, HasDynamicYStepTypeCo...">any_image_view
<Views
></a>& runtime_view) {
145 <a name=
"l00125"></a>00125 <a class=
"code" href=
"g_i_l_0169.html#g63405962170c1f94d6318d46134db7f4" title=
"Saves the view to a jpeg file specified by the given jpeg image file name.">jpeg_write_view
</a>(filename.c_str(),runtime_view);
146 <a name=
"l00126"></a>00126 }
147 <a name=
"l00127"></a>00127
148 <a name=
"l00128"></a>00128 } }
<span class=
"comment">// namespace boost::gil
</span>
149 <a name=
"l00129"></a>00129
150 <a name=
"l00130"></a>00130 <span class=
"preprocessor">#endif
</span>
152 <hr size=
"1"><address style=
"text-align: right;"><small>Generated on Sat May
2 13:
50:
14 2009 for Generic Image Library by
153 <a href=
"http://www.doxygen.org/index.html">
154 <img src=
"doxygen.png" alt=
"doxygen" align=
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