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22 <TITLE>Generic Image Library: bit_aligned_pixel_reference
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37 <!-- Generated by Doxygen 1.5.6 -->
38 <div class=
"contents">
39 <h1>bit_aligned_pixel_reference
<br>
41 [
<a class=
"el" href=
"g_i_l_0206.html">Models
</a>]
</small>
42 </h1><hr><a name=
"_details"></a><h2>Detailed Description
</h2>
43 A heterogeneous
<a class=
"el" href=
"g_i_l_0599.html" title=
"Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel
</a> reference used to represent non-byte-aligned pixels. Models
<a class=
"el" href=
"g_i_l_0346.html" title=
"Pixel concept - A color base whose elements are channels.">PixelConcept
</a>.
45 Example:
<div class=
"fragment"><pre class=
"fragment"><span class=
"keywordtype">unsigned
</span> <span class=
"keywordtype">char
</span> data=
0;
47 <span class=
"comment">// A mutable reference to a
6-bit BGR pixel in
"123" format (
1 bit for red,
2 bits for green,
3 bits for blue)
</span>
48 <span class=
"keyword">typedef
</span> <span class=
"keyword">const
</span> bit_aligned_pixel_reference
<unsigned char, mpl::vector3_c
<int,
1,
2,
3>, rgb_layout_t,
<span class=
"keyword">true
</span>> rgb123_ref_t;
50 <span class=
"comment">// create the pixel reference at bit offset
2</span>
51 <span class=
"comment">// (i.e. red = [
2], green = [
3,
4], blue = [
5,
6,
7] bits)
</span>
52 rgb123_ref_t ref(
&data,
2);
53 <a class=
"code" href=
"g_i_l_0106.html#gab1205781ba628ca806c47a51f40f5f6" title=
"Mutable accessor to the element associated with a given color name.">get_color
</a>(ref, red_t()) =
1;
55 <a class=
"code" href=
"g_i_l_0106.html#gab1205781ba628ca806c47a51f40f5f6" title=
"Mutable accessor to the element associated with a given color name.">get_color
</a>(ref, green_t()) =
3;
57 <a class=
"code" href=
"g_i_l_0106.html#gab1205781ba628ca806c47a51f40f5f6" title=
"Mutable accessor to the element associated with a given color name.">get_color
</a>(ref, blue_t()) =
7;
61 <table border=
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"0">
63 <tr><td colspan=
"2"><br><h2>Classes
</h2></td></tr>
64 <tr><td class=
"memItemLeft" nowrap
align=
"right" valign=
"top">struct
</td><td class=
"memItemRight" valign=
"bottom"><a class=
"el" href=
"g_i_l_0403.html">bit_aligned_pixel_reference
</a></td></tr>
66 <tr><td class=
"mdescLeft"> </td><td class=
"mdescRight">Heterogeneous
<a class=
"el" href=
"g_i_l_0599.html" title=
"Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel
</a> reference corresponding to non-byte-aligned bit range. Models
<a class=
"el" href=
"g_i_l_0274.html" title=
"A color base is a container of color elements (such as channels, channel references...">ColorBaseConcept
</a>,
<a class=
"el" href=
"g_i_l_0346.html" title=
"Pixel concept - A color base whose elements are channels.">PixelConcept
</a>,
<a class=
"el" href=
"g_i_l_0344.html" title=
"Concept for all pixel-based GIL constructs, such as pixels, iterators, locators,...">PixelBasedConcept
</a>.
<a href=
"g_i_l_0403.html#_details">More...
</a><br></td></tr>
69 <hr size=
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2 13:
50:
16 2009 for Generic Image Library by
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