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| <h1>bit_aligned_pixel_iterator.hpp</h1><a href="g_i_l_0011.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 |
| <a name="l00011"></a>00011 <span class="comment">/*************************************************************************************************/</span> |
| <a name="l00012"></a>00012 |
| <a name="l00013"></a>00013 <span class="preprocessor">#ifndef GIL_BIT_ALIGNED_PIXEL_ITERATOR_HPP</span> |
| <a name="l00014"></a>00014 <span class="preprocessor"></span><span class="preprocessor">#define GIL_BIT_ALIGNED_PIXEL_ITERATOR_HPP</span> |
| <a name="l00015"></a>00015 <span class="preprocessor"></span> |
| <a name="l00024"></a>00024 |
| <a name="l00025"></a>00025 <span class="preprocessor">#include <functional></span> |
| <a name="l00026"></a>00026 <span class="preprocessor">#include <boost/iterator/iterator_facade.hpp></span> |
| <a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="g_i_l_0094.html" title="GIL configuration file.">gil_config.hpp</a>"</span> |
| <a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="g_i_l_0013.html" title="A model of a heterogeneous pixel that is not byte aligned. Examples are bitmap (1-bit...">bit_aligned_pixel_reference.hpp</a>"</span> |
| <a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="g_i_l_0243.html" title="pixel iterator support">pixel_iterator.hpp</a>"</span> |
| <a name="l00030"></a>00030 |
| <a name="l00031"></a>00031 <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil { |
| <a name="l00032"></a>00032 |
| <a name="l00036"></a>00036 |
| <a name="l00043"></a>00043 |
| <a name="l00044"></a>00044 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00045"></a><a class="code" href="g_i_l_0401.html">00045</a> <span class="keyword">struct </span><a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">bit_aligned_pixel_iterator</a> : <span class="keyword">public</span> iterator_facade<bit_aligned_pixel_iterator<NonAlignedPixelReference>, |
| <a name="l00046"></a>00046 typename NonAlignedPixelReference::value_type, |
| <a name="l00047"></a>00047 random_access_traversal_tag, |
| <a name="l00048"></a>00048 const NonAlignedPixelReference, |
| <a name="l00049"></a>00049 typename NonAlignedPixelReference::bit_range_t::difference_type> { |
| <a name="l00050"></a>00050 <span class="keyword">private</span>: |
| <a name="l00051"></a>00051 <span class="keyword">typedef</span> iterator_facade<bit_aligned_pixel_iterator<NonAlignedPixelReference>, |
| <a name="l00052"></a>00052 <span class="keyword">typename</span> NonAlignedPixelReference::value_type, |
| <a name="l00053"></a>00053 random_access_traversal_tag, |
| <a name="l00054"></a>00054 <span class="keyword">const</span> NonAlignedPixelReference, |
| <a name="l00055"></a>00055 <span class="keyword">typename</span> NonAlignedPixelReference::bit_range_t::difference_type> parent_t; |
| <a name="l00056"></a>00056 <span class="keyword">template</span> <<span class="keyword">typename</span> Ref> <span class="keyword">friend</span> <span class="keyword">struct </span><a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">bit_aligned_pixel_iterator</a>; |
| <a name="l00057"></a>00057 |
| <a name="l00058"></a>00058 <span class="keyword">typedef</span> <span class="keyword">typename</span> NonAlignedPixelReference::bit_range_t bit_range_t; |
| <a name="l00059"></a>00059 <span class="keyword">public</span>: |
| <a name="l00060"></a>00060 <span class="keyword">typedef</span> <span class="keyword">typename</span> parent_t::difference_type difference_type; |
| <a name="l00061"></a>00061 <span class="keyword">typedef</span> <span class="keyword">typename</span> parent_t::reference reference; |
| <a name="l00062"></a>00062 |
| <a name="l00063"></a>00063 <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">bit_aligned_pixel_iterator</a>() {} |
| <a name="l00064"></a>00064 <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">bit_aligned_pixel_iterator</a>(<span class="keyword">const</span> <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">bit_aligned_pixel_iterator</a>& p) : _bit_range(p.<a class="code" href="g_i_l_0401.html#7495e83a5b66f6f3825fe94aca667c72">_bit_range</a>) {} |
| <a name="l00065"></a>00065 <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">bit_aligned_pixel_iterator</a>& operator=(<span class="keyword">const</span> <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">bit_aligned_pixel_iterator</a>& p) { _bit_range=p.<a class="code" href="g_i_l_0401.html#7495e83a5b66f6f3825fe94aca667c72">_bit_range</a>; <span class="keywordflow">return</span> *<span class="keyword">this</span>; } |
| <a name="l00066"></a>00066 |
| <a name="l00067"></a>00067 <span class="keyword">template</span> <<span class="keyword">typename</span> Ref> <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">bit_aligned_pixel_iterator</a>(<span class="keyword">const</span> <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">bit_aligned_pixel_iterator<Ref></a>& p) : _bit_range(p.<a class="code" href="g_i_l_0401.html#7495e83a5b66f6f3825fe94aca667c72">_bit_range</a>) {} |
| <a name="l00068"></a>00068 |
| <a name="l00069"></a>00069 <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">bit_aligned_pixel_iterator</a>(reference* ref) : _bit_range(ref->bit_range()) {} |
| <a name="l00070"></a>00070 <span class="keyword">explicit</span> <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">bit_aligned_pixel_iterator</a>(<span class="keyword">typename</span> bit_range_t::byte_t* data, <span class="keywordtype">int</span> bit_offset=0) : _bit_range(data,bit_offset) {} |
| <a name="l00071"></a>00071 |
| <a name="l00074"></a><a class="code" href="g_i_l_0401.html#de1279c4ed222b6efb0867c038765ea1">00074</a> reference <a class="code" href="g_i_l_0401.html#de1279c4ed222b6efb0867c038765ea1">operator[]</a>(difference_type d)<span class="keyword"> const </span>{ <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">bit_aligned_pixel_iterator</a> it=*<span class="keyword">this</span>; it.<a class="code" href="g_i_l_0401.html#7b8f8a4374e44f45621eeb1392664f66">advance</a>(d); <span class="keywordflow">return</span> *it; } |
| <a name="l00075"></a>00075 |
| <a name="l00076"></a>00076 reference operator->()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> **<span class="keyword">this</span>; } |
| <a name="l00077"></a>00077 <span class="keyword">const</span> bit_range_t& bit_range()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _bit_range; } |
| <a name="l00078"></a>00078 bit_range_t& bit_range() { <span class="keywordflow">return</span> _bit_range; } |
| <a name="l00079"></a>00079 <span class="keyword">private</span>: |
| <a name="l00080"></a>00080 bit_range_t _bit_range; |
| <a name="l00081"></a>00081 BOOST_STATIC_CONSTANT(<span class="keywordtype">int</span>, bit_size = NonAlignedPixelReference::bit_size); |
| <a name="l00082"></a>00082 |
| <a name="l00083"></a>00083 <span class="keyword">friend</span> <span class="keyword">class </span>boost::iterator_core_access; |
| <a name="l00084"></a>00084 reference dereference()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> NonAlignedPixelReference(_bit_range); } |
| <a name="l00085"></a>00085 <span class="keywordtype">void</span> increment() { ++_bit_range; } |
| <a name="l00086"></a>00086 <span class="keywordtype">void</span> decrement() { --_bit_range; } |
| <a name="l00087"></a>00087 <span class="keywordtype">void</span> advance(difference_type d) { _bit_range.bit_advance(d*bit_size); } |
| <a name="l00088"></a>00088 |
| <a name="l00089"></a>00089 difference_type distance_to(<span class="keyword">const</span> bit_aligned_pixel_iterator& it)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _bit_range.bit_distance_to(it._bit_range) / bit_size; } |
| <a name="l00090"></a>00090 <span class="keywordtype">bool</span> <a class="code" href="g_i_l_0214.html#g4ed3cf71cb0fbf435d1389df8567a4e5" title="std::equal(I1,I1,I2) with I1 and I2 being a iterator_from_2d">equal</a>(<span class="keyword">const</span> bit_aligned_pixel_iterator& it)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _bit_range==it._bit_range; } |
| <a name="l00091"></a>00091 }; |
| <a name="l00092"></a>00092 |
| <a name="l00093"></a>00093 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00094"></a>00094 <span class="keyword">struct </span>const_iterator_type<bit_aligned_pixel_iterator<NonAlignedPixelReference> > { |
| <a name="l00095"></a>00095 <span class="keyword">typedef</span> bit_aligned_pixel_iterator<typename NonAlignedPixelReference::const_reference> type; |
| <a name="l00096"></a>00096 }; |
| <a name="l00097"></a>00097 |
| <a name="l00098"></a>00098 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00099"></a>00099 <span class="keyword">struct </span>iterator_is_mutable<bit_aligned_pixel_iterator<NonAlignedPixelReference> > : <span class="keyword">public</span> mpl::bool_<NonAlignedPixelReference::is_mutable> {}; |
| <a name="l00100"></a>00100 |
| <a name="l00101"></a>00101 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00102"></a>00102 <span class="keyword">struct </span>is_iterator_adaptor<bit_aligned_pixel_iterator<NonAlignedPixelReference> > : <span class="keyword">public</span> mpl::false_ {}; |
| <a name="l00103"></a>00103 |
| <a name="l00105"></a>00105 <span class="comment">// PixelBasedConcept</span> |
| <a name="l00107"></a>00107 <span class="comment"></span> |
| <a name="l00108"></a>00108 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00109"></a>00109 <span class="keyword">struct </span>color_space_type<bit_aligned_pixel_iterator<NonAlignedPixelReference> > : <span class="keyword">public</span> color_space_type<NonAlignedPixelReference> {}; |
| <a name="l00110"></a>00110 |
| <a name="l00111"></a>00111 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00112"></a>00112 <span class="keyword">struct </span>channel_mapping_type<bit_aligned_pixel_iterator<NonAlignedPixelReference> > : <span class="keyword">public</span> channel_mapping_type<NonAlignedPixelReference> {}; |
| <a name="l00113"></a>00113 |
| <a name="l00114"></a>00114 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00115"></a>00115 <span class="keyword">struct </span>is_planar<bit_aligned_pixel_iterator<NonAlignedPixelReference> > : <span class="keyword">public</span> is_planar<NonAlignedPixelReference> {}; <span class="comment">// == false</span> |
| <a name="l00116"></a>00116 |
| <a name="l00118"></a>00118 <span class="comment">// MemoryBasedIteratorConcept</span> |
| <a name="l00120"></a>00120 <span class="comment"></span> |
| <a name="l00121"></a>00121 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00122"></a>00122 <span class="keyword">struct </span>byte_to_memunit<bit_aligned_pixel_iterator<NonAlignedPixelReference> > : <span class="keyword">public</span> mpl::int_<8> {}; |
| <a name="l00123"></a>00123 |
| <a name="l00124"></a>00124 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00125"></a>00125 <span class="keyword">inline</span> std::ptrdiff_t memunit_step(<span class="keyword">const</span> bit_aligned_pixel_iterator<NonAlignedPixelReference>&) { |
| <a name="l00126"></a>00126 <span class="keywordflow">return</span> NonAlignedPixelReference::bit_size; |
| <a name="l00127"></a>00127 } |
| <a name="l00128"></a>00128 |
| <a name="l00129"></a>00129 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00130"></a>00130 <span class="keyword">inline</span> std::ptrdiff_t memunit_distance(<span class="keyword">const</span> bit_aligned_pixel_iterator<NonAlignedPixelReference>& p1, <span class="keyword">const</span> bit_aligned_pixel_iterator<NonAlignedPixelReference>& p2) { |
| <a name="l00131"></a>00131 <span class="keywordflow">return</span> (p2.bit_range().current_byte() - p1.bit_range().current_byte())*8 + p2.bit_range().bit_offset() - p1.bit_range().bit_offset(); |
| <a name="l00132"></a>00132 } |
| <a name="l00133"></a>00133 |
| <a name="l00134"></a>00134 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00135"></a>00135 <span class="keyword">inline</span> <span class="keywordtype">void</span> memunit_advance(bit_aligned_pixel_iterator<NonAlignedPixelReference>& p, std::ptrdiff_t diff) { |
| <a name="l00136"></a>00136 p.bit_range().bit_advance(diff); |
| <a name="l00137"></a>00137 } |
| <a name="l00138"></a>00138 |
| <a name="l00139"></a>00139 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00140"></a>00140 <span class="keyword">inline</span> bit_aligned_pixel_iterator<NonAlignedPixelReference> memunit_advanced(<span class="keyword">const</span> bit_aligned_pixel_iterator<NonAlignedPixelReference>& p, std::ptrdiff_t diff) { |
| <a name="l00141"></a>00141 bit_aligned_pixel_iterator<NonAlignedPixelReference> ret=p; |
| <a name="l00142"></a>00142 memunit_advance(ret, diff); |
| <a name="l00143"></a>00143 <span class="keywordflow">return</span> ret; |
| <a name="l00144"></a>00144 } |
| <a name="l00145"></a>00145 |
| <a name="l00146"></a>00146 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> <span class="keyword">inline</span> |
| <a name="l00147"></a>00147 NonAlignedPixelReference memunit_advanced_ref(bit_aligned_pixel_iterator<NonAlignedPixelReference> it, std::ptrdiff_t diff) { |
| <a name="l00148"></a>00148 <span class="keywordflow">return</span> *memunit_advanced(it,diff); |
| <a name="l00149"></a>00149 } |
| <a name="l00151"></a>00151 <span class="comment">// HasDynamicXStepTypeConcept</span> |
| <a name="l00153"></a>00153 <span class="comment"></span> |
| <a name="l00154"></a>00154 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00155"></a>00155 <span class="keyword">struct </span>dynamic_x_step_type<bit_aligned_pixel_iterator<NonAlignedPixelReference> > { |
| <a name="l00156"></a>00156 <span class="keyword">typedef</span> memory_based_step_iterator<bit_aligned_pixel_iterator<NonAlignedPixelReference> > type; |
| <a name="l00157"></a>00157 }; |
| <a name="l00158"></a>00158 |
| <a name="l00160"></a>00160 <span class="comment">// iterator_type_from_pixel</span> |
| <a name="l00162"></a>00162 <span class="comment"></span> |
| <a name="l00163"></a>00163 <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L, <span class="keywordtype">bool</span> M> |
| <a name="l00164"></a>00164 <span class="keyword">struct </span>iterator_type_from_pixel<const bit_aligned_pixel_reference<B,C,L,M>,false,false,false> { |
| <a name="l00165"></a>00165 <span class="keyword">typedef</span> bit_aligned_pixel_iterator<bit_aligned_pixel_reference<B,C,L,false> > type; |
| <a name="l00166"></a>00166 }; |
| <a name="l00167"></a>00167 |
| <a name="l00168"></a>00168 <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L, <span class="keywordtype">bool</span> M> |
| <a name="l00169"></a>00169 <span class="keyword">struct </span>iterator_type_from_pixel<const bit_aligned_pixel_reference<B,C,L,M>,false,false,true> { |
| <a name="l00170"></a>00170 <span class="keyword">typedef</span> bit_aligned_pixel_iterator<bit_aligned_pixel_reference<B,C,L,true> > type; |
| <a name="l00171"></a>00171 }; |
| <a name="l00172"></a>00172 |
| <a name="l00173"></a>00173 <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L, <span class="keywordtype">bool</span> M, <span class="keywordtype">bool</span> IsPlanar, <span class="keywordtype">bool</span> IsStep, <span class="keywordtype">bool</span> IsMutable> |
| <a name="l00174"></a>00174 <span class="keyword">struct </span>iterator_type_from_pixel<bit_aligned_pixel_reference<B,C,L,M>,IsPlanar,IsStep,IsMutable> |
| <a name="l00175"></a>00175 : <span class="keyword">public</span> iterator_type_from_pixel<const bit_aligned_pixel_reference<B,C,L,M>,IsPlanar,IsStep,IsMutable> {}; |
| <a name="l00176"></a>00176 |
| <a name="l00177"></a>00177 } } <span class="comment">// namespace boost::gil</span> |
| <a name="l00178"></a>00178 |
| <a name="l00179"></a>00179 <span class="keyword">namespace </span>std { |
| <a name="l00180"></a>00180 |
| <a name="l00181"></a>00181 <span class="comment">// It is important to provide an overload of uninitialized_copy for bit_aligned_pixel_iterator. The default STL implementation calls placement new,</span> |
| <a name="l00182"></a>00182 <span class="comment">// which is not defined for bit_aligned_pixel_iterator. </span> |
| <a name="l00183"></a>00183 <span class="keyword">template</span> <<span class="keyword">typename</span> NonAlignedPixelReference> |
| <a name="l00184"></a>00184 <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">boost::gil::bit_aligned_pixel_iterator<NonAlignedPixelReference></a> uninitialized_copy(<a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">boost::gil::bit_aligned_pixel_iterator<NonAlignedPixelReference></a> first, |
| <a name="l00185"></a>00185 <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">boost::gil::bit_aligned_pixel_iterator<NonAlignedPixelReference></a> last, |
| <a name="l00186"></a>00186 <a class="code" href="g_i_l_0401.html" title="An iterator over non-byte-aligned pixels. Models PixelIteratorConcept, PixelBasedConcept...">boost::gil::bit_aligned_pixel_iterator<NonAlignedPixelReference></a> dst) { |
| <a name="l00187"></a>00187 <span class="keywordflow">return</span> <a class="code" href="g_i_l_0214.html#g4e8a9e1bb08e76c93dc56a4626231ee1" title="Copy when both src and dst are planar pointers is copy for each channel.">std::copy</a>(first,last,dst); |
| <a name="l00188"></a>00188 } |
| <a name="l00189"></a>00189 |
| <a name="l00190"></a>00190 } <span class="comment">// namespace std</span> |
| <a name="l00191"></a>00191 <span class="preprocessor">#endif</span> |
| </pre></div></div> |
| <hr size="1"><address style="text-align: right;"><small>Generated on Sat May 2 13:50:13 2009 for Generic Image Library by |
| <a href="http://www.doxygen.org/index.html"> |
| <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address> |
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