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9 Copyright 2005-2007 Adobe Systems Incorporated
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40 <div class=
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41 <h1>bit_aligned_pixel_reference.hpp
</h1><a href=
"g_i_l_0013.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://stlab.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_BIT_ALIGNED_PIXEL_REFERENCE_HPP
</span>
54 <a name=
"l00014"></a>00014 <span class=
"preprocessor"></span><span class=
"preprocessor">#define GIL_BIT_ALIGNED_PIXEL_REFERENCE_HPP
</span>
55 <a name=
"l00015"></a>00015 <span class=
"preprocessor"></span>
56 <a name=
"l00024"></a>00024
57 <a name=
"l00025"></a>00025 <span class=
"preprocessor">#include
<functional
></span>
58 <a name=
"l00026"></a>00026 <span class=
"preprocessor">#include
<boost/mpl/accumulate.hpp
></span>
59 <a name=
"l00027"></a>00027 <span class=
"preprocessor">#include
<boost/mpl/at.hpp
></span>
60 <a name=
"l00028"></a>00028 <span class=
"preprocessor">#include
<boost/mpl/bool.hpp
></span>
61 <a name=
"l00029"></a>00029 <span class=
"preprocessor">#include
<boost/mpl/if.hpp
></span>
62 <a name=
"l00030"></a>00030 <span class=
"preprocessor">#include
<boost/mpl/plus.hpp
></span>
63 <a name=
"l00031"></a>00031 <span class=
"preprocessor">#include
<boost/mpl/push_back.hpp
></span>
64 <a name=
"l00032"></a>00032 <span class=
"preprocessor">#include
<boost/mpl/vector.hpp
></span>
65 <a name=
"l00033"></a>00033 <span class=
"preprocessor">#include
"<a class="code
" href="g_i_l_0094.html
" title="GIL configuration file.
">gil_config.hpp</a>"</span>
66 <a name=
"l00034"></a>00034 <span class=
"preprocessor">#include
"<a class="code
" href="pixel_8hpp.html
" title="pixel class and related utilities
">pixel.hpp</a>"</span>
67 <a name=
"l00035"></a>00035 <span class=
"preprocessor">#include
"<a class="code
" href="channel_8hpp.html
" title="Channel utilities.
">channel.hpp</a>"</span>
68 <a name=
"l00036"></a>00036
69 <a name=
"l00037"></a>00037 <span class=
"keyword">namespace
</span>boost {
<span class=
"keyword">namespace
</span>gil {
70 <a name=
"l00038"></a>00038
71 <a name=
"l00040"></a>00040 <span class=
"comment">// bit_range
</span>
72 <a name=
"l00041"></a>00041 <span class=
"comment">//
</span>
73 <a name=
"l00042"></a>00042 <span class=
"comment">// Represents a range of bits that can span multiple consecutive bytes. The range has a size fixed at compile time, but the offset is specified at run time.
</span>
74 <a name=
"l00044"></a>00044 <span class=
"comment"></span>
75 <a name=
"l00045"></a>00045 <span class=
"keyword">template
</span> <<span class=
"keywordtype">int
</span> RangeSize,
<span class=
"keywordtype">bool
</span> Mutable
>
76 <a name=
"l00046"></a>00046 <span class=
"keyword">class
</span>bit_range {
77 <a name=
"l00047"></a>00047 <span class=
"keyword">public
</span>:
78 <a name=
"l00048"></a>00048 <span class=
"keyword">typedef
</span> <span class=
"keyword">typename
</span> mpl::if_c
<Mutable,unsigned char,const unsigned char
>::type byte_t;
79 <a name=
"l00049"></a>00049 <span class=
"keyword">typedef
</span> std::ptrdiff_t difference_type;
80 <a name=
"l00050"></a>00050 <span class=
"keyword">template
</span> <<span class=
"keywordtype">int
</span> RS,
<span class=
"keywordtype">bool
</span> M
> <span class=
"keyword">friend
</span> <span class=
"keyword">class
</span>bit_range;
81 <a name=
"l00051"></a>00051 <span class=
"keyword">private
</span>:
82 <a name=
"l00052"></a>00052 byte_t* _current_byte;
<span class=
"comment">// the starting byte of the bit range
</span>
83 <a name=
"l00053"></a>00053 <span class=
"keywordtype">int
</span> _bit_offset;
<span class=
"comment">// offset from the beginning of the current byte.
0<=_bit_offset
<=
7</span>
84 <a name=
"l00054"></a>00054
85 <a name=
"l00055"></a>00055 <span class=
"keyword">public
</span>:
86 <a name=
"l00056"></a>00056 bit_range() : _current_byte(NULL), _bit_offset(
0) {}
87 <a name=
"l00057"></a>00057 bit_range(byte_t* current_byte,
<span class=
"keywordtype">int
</span> bit_offset) : _current_byte(current_byte), _bit_offset(bit_offset) { assert(bit_offset
>=
0 && bit_offset
<8); }
88 <a name=
"l00058"></a>00058
89 <a name=
"l00059"></a>00059 bit_range(
<span class=
"keyword">const
</span> bit_range
& br) : _current_byte(br._current_byte), _bit_offset(br._bit_offset) {}
90 <a name=
"l00060"></a>00060 <span class=
"keyword">template
</span> <<span class=
"keywordtype">bool
</span> M
> bit_range(
<span class=
"keyword">const
</span> bit_range
<RangeSize,M
>& br) : _current_byte(br._current_byte), _bit_offset(br._bit_offset) {}
91 <a name=
"l00061"></a>00061
92 <a name=
"l00062"></a>00062 bit_range
& operator=(
<span class=
"keyword">const
</span> bit_range
& br) { _current_byte = br._current_byte; _bit_offset=br._bit_offset;
<span class=
"keywordflow">return
</span> *
<span class=
"keyword">this
</span>; }
93 <a name=
"l00063"></a>00063 <span class=
"keywordtype">bool
</span> operator==(
<span class=
"keyword">const
</span> bit_range
& br)
<span class=
"keyword"> const
</span>{
<span class=
"keywordflow">return
</span> _current_byte==br._current_byte
&& _bit_offset==br._bit_offset; }
94 <a name=
"l00064"></a>00064
95 <a name=
"l00065"></a>00065 bit_range
& operator++() {
96 <a name=
"l00066"></a>00066 _current_byte += (_bit_offset+RangeSize) /
8;
97 <a name=
"l00067"></a>00067 _bit_offset = (_bit_offset+RangeSize) %
8;
98 <a name=
"l00068"></a>00068 <span class=
"keywordflow">return
</span> *
<span class=
"keyword">this
</span>;
99 <a name=
"l00069"></a>00069 }
100 <a name=
"l00070"></a>00070 bit_range
& operator--() { bit_advance(-RangeSize);
<span class=
"keywordflow">return
</span> *
<span class=
"keyword">this
</span>; }
101 <a name=
"l00071"></a>00071
102 <a name=
"l00072"></a>00072 <span class=
"keywordtype">void
</span> bit_advance(difference_type num_bits) {
103 <a name=
"l00073"></a>00073 <span class=
"keywordtype">int
</span> new_offset = int(_bit_offset+num_bits);
104 <a name=
"l00074"></a>00074 _current_byte += new_offset /
8;
105 <a name=
"l00075"></a>00075 _bit_offset = new_offset %
8;
106 <a name=
"l00076"></a>00076 <span class=
"keywordflow">if
</span> (_bit_offset
<0) {
107 <a name=
"l00077"></a>00077 _bit_offset+=
8;
108 <a name=
"l00078"></a>00078 --_current_byte;
109 <a name=
"l00079"></a>00079 }
110 <a name=
"l00080"></a>00080 }
111 <a name=
"l00081"></a>00081 difference_type bit_distance_to(
<span class=
"keyword">const
</span> bit_range
& b)
<span class=
"keyword"> const
</span>{
112 <a name=
"l00082"></a>00082 <span class=
"keywordflow">return
</span> (b.current_byte() - current_byte())*
8 + b.bit_offset()-bit_offset();
113 <a name=
"l00083"></a>00083 }
114 <a name=
"l00084"></a>00084 byte_t* current_byte()
<span class=
"keyword"> const
</span>{
<span class=
"keywordflow">return
</span> _current_byte; }
115 <a name=
"l00085"></a>00085 <span class=
"keywordtype">int
</span> bit_offset()
<span class=
"keyword"> const
</span>{
<span class=
"keywordflow">return
</span> _bit_offset; }
116 <a name=
"l00086"></a>00086 };
117 <a name=
"l00087"></a>00087
118 <a name=
"l00088"></a>00088
119 <a name=
"l00092"></a>00092
120 <a name=
"l00116"></a>00116
121 <a name=
"l00117"></a>00117
122 <a name=
"l00118"></a>00118 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> BitField,
123 <a name=
"l00119"></a>00119 <span class=
"keyword">typename
</span> ChannelBitSizes,
<span class=
"comment">// MPL integral vector defining the number of bits for each channel. For example, for
565RGB, vector_c
<int,
5,
6,
5></span>
124 <a name=
"l00120"></a>00120 <span class=
"keyword">typename
</span> Layout,
125 <a name=
"l00121"></a>00121 <span class=
"keywordtype">bool
</span> IsMutable
>
126 <a name=
"l00122"></a><a class=
"code" href=
"g_i_l_0403.html">00122</a> <span class=
"keyword">struct
</span><a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">bit_aligned_pixel_reference
</a> {
127 <a name=
"l00123"></a>00123 BOOST_STATIC_CONSTANT(
<span class=
"keywordtype">int
</span>, bit_size = (mpl::accumulate
<ChannelBitSizes, mpl::int_
<0>, mpl::plus
<mpl::_1, mpl::_2
> >::type::value));
128 <a name=
"l00124"></a>00124 <span class=
"keyword">typedef
</span> boost::gil::bit_range
<bit_size,IsMutable
> bit_range_t;
129 <a name=
"l00125"></a>00125 <span class=
"keyword">typedef
</span> BitField bitfield_t;
130 <a name=
"l00126"></a>00126 <span class=
"keyword">typedef
</span> <span class=
"keyword">typename
</span> mpl::if_c
<IsMutable,unsigned char*,const unsigned char*
>::type data_ptr_t;
131 <a name=
"l00127"></a>00127
132 <a name=
"l00128"></a>00128 <span class=
"keyword">typedef
</span> Layout layout_t;
133 <a name=
"l00129"></a>00129
134 <a name=
"l00130"></a>00130 <span class=
"keyword">typedef
</span> <span class=
"keyword">typename
</span> <a class=
"code" href=
"g_i_l_0597.html" title=
"Returns the type of a packed pixel given its bitfield type, the bit size of its channels...">packed_pixel_type
<bitfield_t,ChannelBitSizes,Layout
>::type
</a> <a class=
"code" href=
"g_i_l_0595.html" title=
"Heterogeneous pixel value whose channel references can be constructed from the pixel...">value_type
</a>;
135 <a name=
"l00131"></a>00131 <span class=
"keyword">typedef
</span> <span class=
"keyword">const
</span> <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">bit_aligned_pixel_reference
</a> <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">reference
</a>;
136 <a name=
"l00132"></a>00132 <span class=
"keyword">typedef
</span> <span class=
"keyword">const
</span> <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">bit_aligned_pixel_reference
<BitField,ChannelBitSizes,Layout,false
></a> <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">const_reference
</a>;
137 <a name=
"l00133"></a>00133
138 <a name=
"l00134"></a>00134 BOOST_STATIC_CONSTANT(
<span class=
"keywordtype">bool
</span>, is_mutable = IsMutable);
139 <a name=
"l00135"></a>00135
140 <a name=
"l00136"></a>00136 <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">bit_aligned_pixel_reference
</a>(){}
141 <a name=
"l00137"></a>00137 <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">bit_aligned_pixel_reference
</a>(data_ptr_t data_ptr,
<span class=
"keywordtype">int
</span> bit_offset) : _bit_range(data_ptr, bit_offset) {}
142 <a name=
"l00138"></a>00138 <span class=
"keyword">explicit
</span> <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">bit_aligned_pixel_reference
</a>(
<span class=
"keyword">const
</span> bit_range_t
& bit_range) : _bit_range(bit_range) {}
143 <a name=
"l00139"></a>00139 <span class=
"keyword">template
</span> <<span class=
"keywordtype">bool
</span> IsMutable2
> <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">bit_aligned_pixel_reference
</a>(
<span class=
"keyword">const
</span> <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">bit_aligned_pixel_reference
<BitField,ChannelBitSizes,Layout,IsMutable2
></a>& p) : _bit_range(p.
<a class=
"code" href=
"g_i_l_0403.html#7495e83a5b66f6f3825fe94aca667c72">_bit_range
</a>) {}
144 <a name=
"l00140"></a>00140
145 <a name=
"l00141"></a>00141 <span class=
"comment">// Grayscale references can be constructed from the channel reference
</span>
146 <a name=
"l00142"></a>00142 <span class=
"keyword">explicit
</span> bit_aligned_pixel_reference(
<span class=
"keyword">const
</span> <span class=
"keyword">typename
</span> kth_element_type
<bit_aligned_pixel_reference,
0>::type channel0) : _bit_range(static_cast
<data_ptr_t
>(
&channel0), channel0.first_bit()) {
147 <a name=
"l00143"></a>00143 BOOST_STATIC_ASSERT((
<a class=
"code" href=
"g_i_l_0581.html" title=
"Returns the number of channels of a pixel-based GIL construct.">num_channels
<bit_aligned_pixel_reference
>::value
</a>==
1));
148 <a name=
"l00144"></a>00144 }
149 <a name=
"l00145"></a>00145
150 <a name=
"l00146"></a>00146 <span class=
"comment">// Construct from another compatible pixel type
</span>
151 <a name=
"l00147"></a>00147 bit_aligned_pixel_reference(
<span class=
"keyword">const
</span> bit_aligned_pixel_reference
& p) : _bit_range(p.
<a class=
"code" href=
"g_i_l_0403.html#7495e83a5b66f6f3825fe94aca667c72">_bit_range
</a>) {}
152 <a name=
"l00148"></a>00148 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> BF,
<span class=
"keyword">typename
</span> CR
> bit_aligned_pixel_reference(
<a class=
"code" href=
"g_i_l_0595.html" title=
"Heterogeneous pixel value whose channel references can be constructed from the pixel...">packed_pixel
<BF,CR,Layout
></a>& p) : _bit_range(static_cast
<data_ptr_t
>(
&at_c
<0>(p)), at_c
<0>(p).first_bit()) {
153 <a name=
"l00149"></a>00149 check_compatible
<packed_pixel
<BF,CR,Layout
> >();
154 <a name=
"l00150"></a>00150 }
155 <a name=
"l00151"></a>00151
156 <a name=
"l00152"></a>00152 <span class=
"keyword">const
</span> bit_aligned_pixel_reference
& operator=(
<span class=
"keyword">const
</span> bit_aligned_pixel_reference
& p)
<span class=
"keyword"> const
</span>{ static_copy(p,*
<span class=
"keyword">this
</span>);
<span class=
"keywordflow">return
</span> *
<span class=
"keyword">this
</span>; }
157 <a name=
"l00153"></a>00153 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> P
> <span class=
"keyword">const
</span> bit_aligned_pixel_reference
& operator=(
<span class=
"keyword">const
</span> P
& p)
<span class=
"keyword"> const
</span>{ assign(p, mpl::bool_
<is_pixel
<P
>::value
>());
<span class=
"keywordflow">return
</span> *
<span class=
"keyword">this
</span>; }
158 <a name=
"l00154"></a>00154
159 <a name=
"l00155"></a>00155 <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
>()); }
160 <a name=
"l00156"></a>00156 <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); }
161 <a name=
"l00157"></a>00157
162 <a name=
"l00158"></a>00158 <span class=
"keyword">const
</span> bit_aligned_pixel_reference* operator-
>()
<span class=
"keyword"> const
</span>{
<span class=
"keywordflow">return
</span> <span class=
"keyword">this
</span>; }
163 <a name=
"l00159"></a>00159
164 <a name=
"l00160"></a>00160 <span class=
"keyword">const
</span> bit_range_t
& bit_range()
<span class=
"keyword"> const
</span>{
<span class=
"keywordflow">return
</span> _bit_range; }
165 <a name=
"l00161"></a>00161 <span class=
"keyword">private
</span>:
166 <a name=
"l00162"></a>00162 <span class=
"keyword">mutable
</span> bit_range_t _bit_range;
167 <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
> <span class=
"keyword">friend
</span> <span class=
"keyword">struct
</span>bit_aligned_pixel_reference;
168 <a name=
"l00164"></a>00164
169 <a name=
"l00165"></a>00165 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Pixel
> <span class=
"keyword">static
</span> <span class=
"keywordtype">void
</span> check_compatible() { gil_function_requires
<PixelsCompatibleConcept
<Pixel,bit_aligned_pixel_reference
> >(); }
170 <a name=
"l00166"></a>00166
171 <a name=
"l00167"></a>00167 <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_)
<span class=
"keyword"> const
</span>{ check_compatible
<Pixel
>(); static_copy(p,*
<span class=
"keyword">this
</span>); }
172 <a name=
"l00168"></a>00168 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Pixel
> <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> 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); }
173 <a name=
"l00169"></a>00169
174 <a name=
"l00170"></a>00170 <span class=
"keyword">private
</span>:
175 <a name=
"l00171"></a>00171 <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)); }
176 <a name=
"l00172"></a>00172 <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_)
<span class=
"keyword"> const
</span>{ check_gray(); at_c
<0>(*this)=chan; }
177 <a name=
"l00173"></a>00173 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> Channel
> <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> Channel
& chan, mpl::false_)
<span class=
"keyword"> const
</span>{ check_gray();
<span class=
"keywordflow">return
</span> at_c
<0>(*this)==chan; }
178 <a name=
"l00174"></a>00174 };
179 <a name=
"l00175"></a>00175
180 <a name=
"l00177"></a>00177 <span class=
"comment">// ColorBasedConcept
</span>
181 <a name=
"l00179"></a>00179 <span class=
"comment"></span>
182 <a name=
"l00180"></a>00180 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> BitField,
<span class=
"keyword">typename
</span> ChannelBitSizes,
<span class=
"keyword">typename
</span> L,
<span class=
"keywordtype">bool
</span> IsMutable,
<span class=
"keywordtype">int
</span> K
>
183 <a name=
"l00181"></a>00181 <span class=
"keyword">struct
</span>kth_element_type
<<a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">bit_aligned_pixel_reference
</a><BitField,ChannelBitSizes,L,IsMutable
>, K
> {
184 <a name=
"l00182"></a>00182 <span class=
"keyword">public
</span>:
185 <a name=
"l00183"></a>00183 <span class=
"keyword">typedef
</span> <span class=
"keyword">const
</span> packed_dynamic_channel_reference
<BitField, mpl::at_c
<ChannelBitSizes,K
>::type::value, IsMutable
> type;
186 <a name=
"l00184"></a>00184 };
187 <a name=
"l00185"></a>00185
188 <a name=
"l00186"></a>00186 <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">int
</span> K
>
189 <a name=
"l00187"></a>00187 <span class=
"keyword">struct
</span>kth_element_reference_type
<bit_aligned_pixel_reference
<B,C,L,M
>, K
>
190 <a name=
"l00188"></a>00188 :
<span class=
"keyword">public
</span> kth_element_type
<bit_aligned_pixel_reference
<B,C,L,M
>, K
> {};
191 <a name=
"l00189"></a>00189
192 <a name=
"l00190"></a>00190 <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">int
</span> K
>
193 <a name=
"l00191"></a>00191 <span class=
"keyword">struct
</span>kth_element_const_reference_type
<bit_aligned_pixel_reference
<B,C,L,M
>, K
>
194 <a name=
"l00192"></a>00192 :
<span class=
"keyword">public
</span> kth_element_type
<bit_aligned_pixel_reference
<B,C,L,M
>, K
> {};
195 <a name=
"l00193"></a>00193
196 <a name=
"l00194"></a>00194
197 <a name=
"l00195"></a>00195 <span class=
"keyword">namespace
</span>detail {
198 <a name=
"l00196"></a>00196 <span class=
"comment">// returns sum of IntegralVector[
0] ... IntegralVector[K-
1]
</span>
199 <a name=
"l00197"></a>00197 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> IntegralVector,
<span class=
"keywordtype">int
</span> K
>
200 <a name=
"l00198"></a>00198 <span class=
"keyword">struct
</span>sum_k :
<span class=
"keyword">public
</span> mpl::plus
<sum_k
<IntegralVector,K-
1>, typename mpl::at_c
<IntegralVector,K-
1>::type
> {};
201 <a name=
"l00199"></a>00199
202 <a name=
"l00200"></a>00200 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> IntegralVector
> <span class=
"keyword">struct
</span>sum_k
<IntegralVector,
0> :
<span class=
"keyword">public
</span> mpl::int_
<0> {};
203 <a name=
"l00201"></a>00201 }
204 <a name=
"l00202"></a>00202
205 <a name=
"l00203"></a>00203 <span class=
"comment">// at_c required by MutableColorBaseConcept
</span>
206 <a name=
"l00204"></a>00204 <span class=
"keyword">template
</span> <<span class=
"keywordtype">int
</span> K,
<span class=
"keyword">typename
</span> BitField,
<span class=
"keyword">typename
</span> ChannelBitSizes,
<span class=
"keyword">typename
</span> L,
<span class=
"keywordtype">bool
</span> Mutable
> <span class=
"keyword">inline
</span>
207 <a name=
"l00205"></a>00205 <span class=
"keyword">typename
</span> kth_element_reference_type
<bit_aligned_pixel_reference
<BitField,ChannelBitSizes,L,Mutable
>,K
>::type
208 <a name=
"l00206"></a>00206 at_c(
<span class=
"keyword">const
</span> bit_aligned_pixel_reference
<BitField,ChannelBitSizes,L,Mutable
>& p) {
209 <a name=
"l00207"></a>00207 <span class=
"keyword">typedef
</span> bit_aligned_pixel_reference
<BitField,ChannelBitSizes,L,Mutable
> pixel_t;
210 <a name=
"l00208"></a>00208 <span class=
"keyword">typedef
</span> <span class=
"keyword">typename
</span> kth_element_reference_type
<pixel_t,K
>::type channel_t;
211 <a name=
"l00209"></a>00209 <span class=
"keyword">typedef
</span> <span class=
"keyword">typename
</span> pixel_t::bit_range_t bit_range_t;
212 <a name=
"l00210"></a>00210
213 <a name=
"l00211"></a>00211 bit_range_t bit_range(p.bit_range());
214 <a name=
"l00212"></a>00212 bit_range.bit_advance(detail::sum_k
<ChannelBitSizes,K
>::value);
215 <a name=
"l00213"></a>00213
216 <a name=
"l00214"></a>00214 <span class=
"keywordflow">return
</span> channel_t(bit_range.current_byte(), bit_range.bit_offset());
217 <a name=
"l00215"></a>00215 }
218 <a name=
"l00216"></a>00216
219 <a name=
"l00218"></a>00218 <span class=
"comment">// PixelConcept
</span>
220 <a name=
"l00220"></a>00220 <span class=
"comment"></span>
221 <a name=
"l00222"></a>00222 <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
>
222 <a name=
"l00223"></a><a class=
"code" href=
"g_i_l_0542.html">00223</a> <span class=
"keyword">struct
</span>is_pixel
<<a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">bit_aligned_pixel_reference
</a><B,C,L,M
> > :
<span class=
"keyword">public
</span> mpl::true_{};
223 <a name=
"l00224"></a>00224
224 <a name=
"l00226"></a>00226 <span class=
"comment">// PixelBasedConcept
</span>
225 <a name=
"l00228"></a>00228 <span class=
"comment"></span>
226 <a name=
"l00229"></a>00229 <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
>
227 <a name=
"l00230"></a>00230 <span class=
"keyword">struct
</span>color_space_type
<<a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">bit_aligned_pixel_reference
</a><B,C,L,M
> > {
228 <a name=
"l00231"></a>00231 <span class=
"keyword">typedef
</span> <span class=
"keyword">typename
</span> L::color_space_t type;
229 <a name=
"l00232"></a>00232 };
230 <a name=
"l00233"></a>00233
231 <a name=
"l00234"></a>00234 <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
>
232 <a name=
"l00235"></a>00235 <span class=
"keyword">struct
</span>channel_mapping_type
<bit_aligned_pixel_reference
<B,C,L,M
> > {
233 <a name=
"l00236"></a>00236 <span class=
"keyword">typedef
</span> <span class=
"keyword">typename
</span> L::channel_mapping_t type;
234 <a name=
"l00237"></a>00237 };
235 <a name=
"l00238"></a>00238
236 <a name=
"l00239"></a>00239 <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
>
237 <a name=
"l00240"></a>00240 <span class=
"keyword">struct
</span>is_planar
<bit_aligned_pixel_reference
<B,C,L,M
> > : mpl::false_ {};
238 <a name=
"l00241"></a>00241
239 <a name=
"l00243"></a>00243 <span class=
"comment">// pixel_reference_type
</span>
240 <a name=
"l00245"></a>00245 <span class=
"comment"></span>
241 <a name=
"l00246"></a>00246 <span class=
"keyword">namespace
</span>detail {
242 <a name=
"l00247"></a>00247 <span class=
"comment">// returns a vector containing K copies of the type T
</span>
243 <a name=
"l00248"></a>00248 <span class=
"keyword">template
</span> <<span class=
"keywordtype">unsigned
</span> K,
<span class=
"keyword">typename
</span> T
> <span class=
"keyword">struct
</span>k_copies;
244 <a name=
"l00249"></a>00249 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> T
> <span class=
"keyword">struct
</span>k_copies
<0,T
> {
245 <a name=
"l00250"></a>00250 <span class=
"keyword">typedef
</span> mpl::vector0
<> type;
246 <a name=
"l00251"></a>00251 };
247 <a name=
"l00252"></a>00252 <span class=
"keyword">template
</span> <<span class=
"keywordtype">unsigned
</span> K,
<span class=
"keyword">typename
</span> T
> <span class=
"keyword">struct
</span>k_copies :
<span class=
"keyword">public
</span> mpl::push_back
<typename k_copies
<K-
1,T
>::type, T
> {};
248 <a name=
"l00253"></a>00253 }
249 <a name=
"l00254"></a>00254
250 <a name=
"l00255"></a>00255 <span class=
"comment">// Constructs a homogeneous bit_aligned_pixel_reference given a channel reference
</span>
251 <a name=
"l00256"></a>00256 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> BitField,
<span class=
"keywordtype">int
</span> NumBits,
<span class=
"keyword">typename
</span> Layout
>
252 <a name=
"l00257"></a>00257 <span class=
"keyword">struct
</span>pixel_reference_type
<const packed_dynamic_channel_reference
<BitField,NumBits,false
>, Layout, false, false
> {
253 <a name=
"l00258"></a>00258 <span class=
"keyword">private
</span>:
254 <a name=
"l00259"></a>00259 <span class=
"keyword">typedef
</span> <span class=
"keyword">typename
</span> mpl::size
<typename Layout::color_space_t
>::type size_t;
255 <a name=
"l00260"></a>00260 <span class=
"keyword">typedef
</span> <span class=
"keyword">typename
</span> detail::k_copies
<size_t::value,mpl::integral_c
<unsigned,NumBits
> >::type channel_bit_sizes_t;
256 <a name=
"l00261"></a>00261 <span class=
"keyword">public
</span>:
257 <a name=
"l00262"></a>00262 <span class=
"keyword">typedef
</span> bit_aligned_pixel_reference
<BitField, channel_bit_sizes_t, Layout, false
> type;
258 <a name=
"l00263"></a>00263 };
259 <a name=
"l00264"></a>00264
260 <a name=
"l00265"></a>00265 <span class=
"comment">// Same but for the mutable case. We cannot combine the mutable and read-only cases because this triggers ambiguity
</span>
261 <a name=
"l00266"></a>00266 <span class=
"keyword">template
</span> <<span class=
"keyword">typename
</span> BitField,
<span class=
"keywordtype">int
</span> NumBits,
<span class=
"keyword">typename
</span> Layout
>
262 <a name=
"l00267"></a>00267 <span class=
"keyword">struct
</span>pixel_reference_type
<const packed_dynamic_channel_reference
<BitField,NumBits,true
>, Layout, false, true
> {
263 <a name=
"l00268"></a>00268 <span class=
"keyword">private
</span>:
264 <a name=
"l00269"></a>00269 <span class=
"keyword">typedef
</span> <span class=
"keyword">typename
</span> mpl::size
<typename Layout::color_space_t
>::type size_t;
265 <a name=
"l00270"></a>00270 <span class=
"keyword">typedef
</span> <span class=
"keyword">typename
</span> detail::k_copies
<size_t::value,mpl::integral_c
<unsigned,NumBits
> >::type channel_bit_sizes_t;
266 <a name=
"l00271"></a>00271 <span class=
"keyword">public
</span>:
267 <a name=
"l00272"></a>00272 <span class=
"keyword">typedef
</span> bit_aligned_pixel_reference
<BitField, channel_bit_sizes_t, Layout, true
> type;
268 <a name=
"l00273"></a>00273 };
269 <a name=
"l00274"></a>00274
270 <a name=
"l00275"></a>00275 } }
<span class=
"comment">// namespace boost::gil
</span>
271 <a name=
"l00276"></a>00276
272 <a name=
"l00277"></a>00277 <span class=
"keyword">namespace
</span>std {
273 <a name=
"l00278"></a>00278 <span class=
"comment">// We are forced to define swap inside std namespace because on some platforms (Visual Studio
8) STL calls swap qualified.
</span>
274 <a name=
"l00279"></a>00279 <span class=
"comment">// swap with 'left bias':
</span>
275 <a name=
"l00280"></a>00280 <span class=
"comment">// - swap between proxy and anything
</span>
276 <a name=
"l00281"></a>00281 <span class=
"comment">// - swap between value type and proxy
</span>
277 <a name=
"l00282"></a>00282 <span class=
"comment">// - swap between proxy and proxy
</span>
278 <a name=
"l00283"></a>00283 <span class=
"comment">// Having three overloads allows us to swap between different (but compatible) models of PixelConcept
</span>
279 <a name=
"l00284"></a>00284
280 <a name=
"l00285"></a>00285 <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=
"keyword">typename
</span> R
> <span class=
"keyword">inline
</span>
281 <a name=
"l00286"></a>00286 <span class=
"keywordtype">void
</span> swap(
<span class=
"keyword">const
</span> <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">boost::gil::bit_aligned_pixel_reference
<B,C,L,true
></a> x, R
& y) {
282 <a name=
"l00287"></a>00287 boost::gil::swap_proxy
<typename boost::gil::bit_aligned_pixel_reference
<B,C,L,true
>::value_type
>(x,y);
283 <a name=
"l00288"></a>00288 }
284 <a name=
"l00289"></a>00289
285 <a name=
"l00290"></a>00290
286 <a name=
"l00291"></a>00291 <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=
"keyword">inline
</span>
287 <a name=
"l00292"></a>00292 <span class=
"keywordtype">void
</span> swap(
<span class=
"keyword">typename
</span> <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">boost::gil::bit_aligned_pixel_reference
<B,C,L,true
>::value_type
</a>& x,
<span class=
"keyword">const
</span> <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">boost::gil::bit_aligned_pixel_reference
<B,C,L,true
></a> y) {
288 <a name=
"l00293"></a>00293 boost::gil::swap_proxy
<typename boost::gil::bit_aligned_pixel_reference
<B,C,L,true
>::value_type
>(x,y);
289 <a name=
"l00294"></a>00294 }
290 <a name=
"l00295"></a>00295
291 <a name=
"l00296"></a>00296
292 <a name=
"l00297"></a>00297 <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=
"keyword">inline
</span>
293 <a name=
"l00298"></a>00298 <span class=
"keywordtype">void
</span> swap(
<span class=
"keyword">const
</span> <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">boost::gil::bit_aligned_pixel_reference
<B,C,L,true
></a> x,
<span class=
"keyword">const
</span> <a class=
"code" href=
"g_i_l_0403.html" title=
"Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models...">boost::gil::bit_aligned_pixel_reference
<B,C,L,true
></a> y) {
294 <a name=
"l00299"></a>00299 boost::gil::swap_proxy
<typename boost::gil::bit_aligned_pixel_reference
<B,C,L,true
>::value_type
>(x,y);
295 <a name=
"l00300"></a>00300 }
296 <a name=
"l00301"></a>00301 }
<span class=
"comment">// namespace std
</span>
297 <a name=
"l00302"></a>00302 <span class=
"preprocessor">#endif
</span>
299 <hr size=
"1"><address style=
"text-align: right;"><small>Generated on Sat May
2 13:
50:
13 2009 for Generic Image Library by
300 <a href=
"http://www.doxygen.org/index.html">
301 <img src=
"doxygen.png" alt=
"doxygen" align=
"middle" border=
"0"></a> 1.5.6 </small></address>