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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> | |
151 | </pre></div></div> | |
152 | <hr size="1"><address style="text-align: right;"><small>Generated on Sat May 2 13:50:14 2009 for Generic Image Library by | |
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