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<h1>pixel.hpp</h1><a href="pixel_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> Copyright 2005-2007 Adobe Systems Incorporated</span>
<a name="l00003"></a>00003 <span class="comment"> </span>
<a name="l00004"></a>00004 <span class="comment"> Use, modification and distribution are subject to the Boost Software License,</span>
<a name="l00005"></a>00005 <span class="comment"> Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at</span>
<a name="l00006"></a>00006 <span class="comment"> http://www.boost.org/LICENSE_1_0.txt).</span>
<a name="l00007"></a>00007 <span class="comment"></span>
<a name="l00008"></a>00008 <span class="comment"> See http://opensource.adobe.com/gil for most recent version including documentation.</span>
<a name="l00009"></a>00009 <span class="comment">*/</span>
<a name="l00010"></a>00010 <span class="comment">/*************************************************************************************************/</span>
<a name="l00011"></a>00011
<a name="l00012"></a>00012 <span class="preprocessor">#ifndef GIL_PIXEL_H</span>
<a name="l00013"></a>00013 <span class="preprocessor"></span><span class="preprocessor">#define GIL_PIXEL_H</span>
<a name="l00014"></a>00014 <span class="preprocessor"></span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include <functional></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <boost/utility/enable_if.hpp></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <boost/mpl/bool.hpp></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <boost/mpl/front.hpp></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <boost/type_traits.hpp></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="g_i_l_0094.html" title="GIL configuration file.">gil_config.hpp</a>"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="g_i_l_0067.html" title="pixel class and related utilities">color_base.hpp</a>"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="g_i_l_0092.html" title="Concept check classes for GIL concepts.">gil_concept.hpp</a>"</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include "<a class="code" href="channel_8hpp.html" title="Channel utilities.">channel.hpp</a>"</span>
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="g_i_l_0238.html" title="metafunctions that construct types or return type properties">metafunctions.hpp</a>"</span>
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="utilities_8hpp.html" title="Various utilities not specific to the image library. Some are non-standard STL extensions...">utilities.hpp</a>"</span>
<a name="l00035"></a>00035 <span class="preprocessor">#include "<a class="code" href="g_i_l_0069.html" title="pixel related algorithms">color_base_algorithm.hpp</a>"</span>
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="comment">// Forward-declare gray_t</span>
<a name="l00040"></a>00040 <span class="keyword">struct </span>gray_color_t;
<a name="l00041"></a>00041 <span class="keyword">typedef</span> mpl::vector1<gray_color_t> gray_t;
<a name="l00042"></a>00042 <span class="keyword">template</span> <<span class="keyword">typename</span> PixelBased> <span class="keyword">struct </span>color_space_type;
<a name="l00043"></a>00043 <span class="keyword">template</span> <<span class="keyword">typename</span> PixelBased> <span class="keyword">struct </span>channel_mapping_type;
<a name="l00044"></a>00044 <span class="keyword">template</span> <<span class="keyword">typename</span> PixelBased> <span class="keyword">struct </span>channel_type;
<a name="l00045"></a>00045 <span class="keyword">template</span> <<span class="keyword">typename</span> PixelBased> <span class="keyword">struct </span>is_planar;
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="keyword">template</span> <<span class="keyword">typename</span> PixelBased> <span class="keyword">struct </span>color_space_type<const PixelBased> : <span class="keyword">public</span> color_space_type<PixelBased> {};
<a name="l00048"></a>00048 <span class="keyword">template</span> <<span class="keyword">typename</span> PixelBased> <span class="keyword">struct </span>channel_mapping_type<const PixelBased> : <span class="keyword">public</span> channel_mapping_type<PixelBased> {};
<a name="l00049"></a>00049 <span class="keyword">template</span> <<span class="keyword">typename</span> PixelBased> <span class="keyword">struct </span>channel_type<const PixelBased> : <span class="keyword">public</span> channel_type<PixelBased> {};
<a name="l00050"></a>00050 <span class="keyword">template</span> <<span class="keyword">typename</span> PixelBased> <span class="keyword">struct </span>is_planar<const PixelBased> : <span class="keyword">public</span> is_planar<PixelBased> {};
<a name="l00051"></a>00051
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keyword">struct </span>is_pixel : <span class="keyword">public</span> mpl::false_{};
<a name="l00054"></a>00054 <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keyword">struct </span>is_pixel<const T> : <span class="keyword">public</span> is_pixel<T> {};
<a name="l00055"></a>00055
<a name="l00058"></a>00058 <span class="keyword">template</span> <<span class="keyword">typename</span> PixelBased>
<a name="l00059"></a><a class="code" href="g_i_l_0581.html">00059</a> <span class="keyword">struct </span><a class="code" href="g_i_l_0581.html" title="Returns the number of channels of a pixel-based GIL construct.">num_channels</a> : <span class="keyword">public</span> mpl::<a class="code" href="g_i_l_0621.html" title="Returns an MPL integral type specifying the number of elements in a color base.">size</a><typename color_space_type<PixelBased>::type> {};
<a name="l00060"></a>00060
<a name="l00077"></a>00077
<a name="l00078"></a>00078
<a name="l00079"></a>00079
<a name="l00080"></a>00080
<a name="l00084"></a>00084
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="keyword">template</span> <<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> Layout> <span class="comment">// = mpl::range_c<int,0,ColorSpace::size> ></span>
<a name="l00102"></a><a class="code" href="g_i_l_0599.html">00102</a> <span class="keyword">struct </span><a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a> : <span class="keyword">public</span> detail::homogeneous_color_base<ChannelValue,Layout,mpl::size<typename Layout::color_space_t>::value> {
<a name="l00103"></a>00103 <span class="keyword">private</span>:
<a name="l00104"></a>00104 <span class="keyword">typedef</span> ChannelValue channel_t;
<a name="l00105"></a>00105 <span class="keyword">typedef</span> detail::homogeneous_color_base<ChannelValue,Layout,mpl::size<typename Layout::color_space_t>::value> parent_t;
<a name="l00106"></a>00106 <span class="keyword">public</span>:
<a name="l00107"></a>00107 <span class="keyword">typedef</span> <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a> <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">value_type</a>;
<a name="l00108"></a>00108 <span class="keyword">typedef</span> <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">value_type</a>& <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">reference</a>;
<a name="l00109"></a>00109 <span class="keyword">typedef</span> <span class="keyword">const</span> <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">value_type</a>& <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">const_reference</a>;
<a name="l00110"></a>00110 BOOST_STATIC_CONSTANT(<span class="keywordtype">bool</span>, is_mutable = <a class="code" href="g_i_l_0429.html" title="Traits for channels. Contains the following members:.">channel_traits<channel_t>::is_mutable</a>);
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>(){}
<a name="l00113"></a>00113 <span class="keyword">explicit</span> <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>(channel_t v) : parent_t(v) {} <span class="comment">// sets all channels to v</span>
<a name="l00114"></a>00114 <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>(channel_t v0, channel_t v1) : parent_t(v0,v1) {}
<a name="l00115"></a>00115 <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>(channel_t v0, channel_t v1, channel_t v2) : parent_t(v0,v1,v2) {}
<a name="l00116"></a>00116 <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>(channel_t v0, channel_t v1, channel_t v2, channel_t v3) : parent_t(v0,v1,v2,v3) {}
<a name="l00117"></a>00117 <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>(channel_t v0, channel_t v1, channel_t v2, channel_t v3, channel_t v4) : parent_t(v0,v1,v2,v3,v4) {}
<a name="l00118"></a>00118 <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>(channel_t v0, channel_t v1, channel_t v2, channel_t v3, channel_t v4, channel_t v5) : parent_t(v0,v1,v2,v3,v4,v5) {}
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>(<span class="keyword">const</span> <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>& p) : parent_t(p) {}
<a name="l00121"></a>00121 <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>& operator=(<span class="keyword">const</span> <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>& p) { static_copy(p,*<span class="keyword">this</span>); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="comment">// Construct from another compatible pixel type</span>
<a name="l00124"></a>00124 <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel> <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>(<span class="keyword">const</span> Pixel& p, <span class="keyword">typename</span> enable_if_c<is_pixel<Pixel>::value>::type* dummy = 0) : parent_t(p) {
<a name="l00125"></a>00125 check_compatible<Pixel>();
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="keyword">template</span> <<span class="keyword">typename</span> P> <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>& operator=(<span class="keyword">const</span> P& p) { assign(p, mpl::bool_<is_pixel<P>::value>()); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }
<a name="l00129"></a>00129 <span class="keyword">template</span> <<span class="keyword">typename</span> P> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> P& p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> equal(p, mpl::bool_<is_pixel<P>::value>()); }
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <span class="keyword">template</span> <<span class="keyword">typename</span> P> <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> P& p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> !(*<span class="keyword">this</span>==p); }
<a name="l00132"></a>00132
<a name="l00133"></a>00133 <span class="comment">// homogeneous pixels have operator[]</span>
<a name="l00134"></a>00134 <span class="keyword">typename</span> <a class="code" href="g_i_l_0429.html" title="Traits for channels. Contains the following members:.">channel_traits<channel_t>::reference</a> operator[](std::size_t i) { <span class="keywordflow">return</span> dynamic_at_c(*<span class="keyword">this</span>,i); }
<a name="l00135"></a>00135 <span class="keyword">typename</span> <a class="code" href="g_i_l_0429.html" title="Traits for channels. Contains the following members:.">channel_traits<channel_t>::const_reference</a> operator[](std::size_t i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> dynamic_at_c(*<span class="keyword">this</span>,i); }
<a name="l00136"></a>00136 <span class="keyword">private</span>:
<a name="l00137"></a>00137 <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel> <span class="keywordtype">void</span> assign(<span class="keyword">const</span> Pixel& p, mpl::true_) { check_compatible<Pixel>(); static_copy(p,*<span class="keyword">this</span>); }
<a name="l00138"></a>00138 <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel> <span class="keywordtype">bool</span> equal(<span class="keyword">const</span> Pixel& p, mpl::true_)<span class="keyword"> const </span>{ check_compatible<Pixel>(); <span class="keywordflow">return</span> static_equal(*<span class="keyword">this</span>,p); }
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel> <span class="keywordtype">void</span> check_compatible()<span class="keyword"> const </span>{ gil_function_requires<PixelsCompatibleConcept<Pixel,pixel> >(); }
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="comment">// Support for assignment/equality comparison of a channel with a grayscale pixel</span>
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="keyword">private</span>:
<a name="l00145"></a>00145 <span class="keyword">static</span> <span class="keywordtype">void</span> check_gray() { BOOST_STATIC_ASSERT((is_same<typename Layout::color_space_t, gray_t>::value)); }
<a name="l00146"></a>00146 <span class="keyword">template</span> <<span class="keyword">typename</span> Channel> <span class="keywordtype">void</span> assign(<span class="keyword">const</span> Channel& chan, mpl::false_) { check_gray(); at_c<0>(*this)=chan; }
<a name="l00147"></a>00147 <span class="keyword">template</span> <<span class="keyword">typename</span> Channel> <span class="keywordtype">bool</span> equal (<span class="keyword">const</span> Channel& chan, mpl::false_)<span class="keyword"> const </span>{ check_gray(); <span class="keywordflow">return</span> at_c<0>(*this)==chan; }
<a name="l00148"></a>00148 <span class="keyword">public</span>:
<a name="l00149"></a>00149 <a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>& operator= (channel_t chan) { check_gray(); at_c<0>(*this)=chan; <span class="keywordflow">return</span> *<span class="keyword">this</span>; }
<a name="l00150"></a>00150 <span class="keywordtype">bool</span> operator==(channel_t chan)<span class="keyword"> const </span>{ check_gray(); <span class="keywordflow">return</span> at_c<0>(*this)==chan; }
<a name="l00151"></a>00151 };
<a name="l00152"></a>00152
<a name="l00154"></a>00154 <span class="comment">// ColorBasedConcept</span>
<a name="l00156"></a>00156 <span class="comment"></span>
<a name="l00157"></a>00157 <span class="keyword">template</span> <<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K>
<a name="l00158"></a>00158 <span class="keyword">struct </span>kth_element_type<<a class="code" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a><ChannelValue,Layout>, K> {
<a name="l00159"></a>00159 <span class="keyword">typedef</span> ChannelValue type;
<a name="l00160"></a>00160 };
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <span class="keyword">template</span> <<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K>
<a name="l00163"></a>00163 <span class="keyword">struct </span>kth_element_reference_type<pixel<ChannelValue,Layout>, K> {
<a name="l00164"></a>00164 <span class="keyword">typedef</span> <span class="keyword">typename</span> channel_traits<ChannelValue>::reference type;
<a name="l00165"></a>00165 };
<a name="l00166"></a>00166
<a name="l00167"></a>00167 <span class="keyword">template</span> <<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K>
<a name="l00168"></a>00168 <span class="keyword">struct </span>kth_element_reference_type<const pixel<ChannelValue,Layout>, K> {
<a name="l00169"></a>00169 <span class="keyword">typedef</span> <span class="keyword">typename</span> channel_traits<ChannelValue>::const_reference type;
<a name="l00170"></a>00170 };
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="keyword">template</span> <<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K>
<a name="l00173"></a>00173 <span class="keyword">struct </span>kth_element_const_reference_type<pixel<ChannelValue,Layout>, K> {
<a name="l00174"></a>00174 <span class="keyword">typedef</span> <span class="keyword">typename</span> channel_traits<ChannelValue>::const_reference type;
<a name="l00175"></a>00175 };
<a name="l00176"></a>00176
<a name="l00178"></a>00178 <span class="comment">// PixelConcept</span>
<a name="l00180"></a>00180 <span class="comment"></span>
<a name="l00181"></a>00181 <span class="keyword">template</span> <<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> Layout>
<a name="l00182"></a>00182 <span class="keyword">struct </span>is_pixel<pixel<ChannelValue,Layout> > : <span class="keyword">public</span> mpl::true_{};
<a name="l00183"></a>00183
<a name="l00185"></a>00185 <span class="comment">// HomogeneousPixelBasedConcept</span>
<a name="l00187"></a>00187 <span class="comment"></span>
<a name="l00188"></a>00188 <span class="keyword">template</span> <<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> Layout>
<a name="l00189"></a>00189 <span class="keyword">struct </span>color_space_type<pixel<ChannelValue,Layout> > {
<a name="l00190"></a>00190 <span class="keyword">typedef</span> <span class="keyword">typename</span> Layout::color_space_t type;
<a name="l00191"></a>00191 };
<a name="l00192"></a>00192
<a name="l00193"></a>00193 <span class="keyword">template</span> <<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> Layout>
<a name="l00194"></a>00194 <span class="keyword">struct </span>channel_mapping_type<pixel<ChannelValue,Layout> > {
<a name="l00195"></a>00195 <span class="keyword">typedef</span> <span class="keyword">typename</span> Layout::channel_mapping_t type;
<a name="l00196"></a>00196 };
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="keyword">template</span> <<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> Layout>
<a name="l00199"></a>00199 <span class="keyword">struct </span>is_planar<pixel<ChannelValue,Layout> > : <span class="keyword">public</span> mpl::false_ {};
<a name="l00200"></a>00200
<a name="l00201"></a>00201 <span class="keyword">template</span> <<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> Layout>
<a name="l00202"></a>00202 <span class="keyword">struct </span>channel_type<pixel<ChannelValue,Layout> > {
<a name="l00203"></a>00203 <span class="keyword">typedef</span> ChannelValue type;
<a name="l00204"></a>00204 };
<a name="l00205"></a>00205
<a name="l00206"></a>00206 } } <span class="comment">// namespace boost::gil</span>
<a name="l00207"></a>00207
<a name="l00208"></a>00208 <span class="keyword">namespace </span>boost {
<a name="l00209"></a>00209 <span class="keyword">template</span> <<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> Layout>
<a name="l00210"></a>00210 <span class="keyword">struct </span>has_trivial_constructor<gil::pixel<ChannelValue,Layout> > : <span class="keyword">public</span> has_trivial_constructor<ChannelValue> {};
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212 <span class="preprocessor">#endif</span>
</pre></div></div>
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