1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162 |
- <!-- HTML header for doxygen 1.8.13-->
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="http://www.w3.org/1999/xhtml">
- <head>
- <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
- <meta http-equiv="X-UA-Compatible" content="IE=9"/>
- <meta name="generator" content="Doxygen 1.8.15"/>
- <meta name="viewport" content="width=device-width, initial-scale=1"/>
- <title>Generic Image Library: scanline_read_iterator.hpp Source File</title>
- <link href="tabs.css" rel="stylesheet" type="text/css"/>
- <script type="text/javascript" src="jquery.js"></script>
- <script type="text/javascript" src="dynsections.js"></script>
- <link href="doxygen.css" rel="stylesheet" type="text/css" />
- <link href="doxygen-boost.css" rel="stylesheet" type="text/css"/>
- </head>
- <body>
- <div class="boost-header">
- <table border="0" cellpadding="7" cellspacing="0" width="100%" summary="header">
- <tr>
- <td valign="top" width="300">
- <h3><a href="../index.html"><img alt="Boost GIL" src="../_static/gil.png" border="0"></a></h3>
- </td>
- <td ><h1 align="center"><a href="../index.html"></a></h1></td>
- <td></td>
- </tr>
- </table>
- </div>
- <hr/>
- <div id="top"><!-- do not remove this div, it is closed by doxygen! -->
- <!-- Generated by Doxygen 1.8.15 -->
- <script type="text/javascript" src="menudata.js"></script>
- <script type="text/javascript" src="menu.js"></script>
- <script type="text/javascript">
- /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
- $(function() {
- initMenu('',false,false,'search.php','Search');
- });
- /* @license-end */</script>
- <div id="main-nav"></div>
- <div id="nav-path" class="navpath">
- <ul>
- <li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_1878a3f4746a95c6aad317458cc7ef80.html">boost</a></li><li class="navelem"><a class="el" href="dir_df4750f408086f9b9c1b5ee4251365ff.html">gil</a></li><li class="navelem"><a class="el" href="dir_80930c1173f2c0438c68e99be5d8d1e3.html">io</a></li> </ul>
- </div>
- </div><!-- top -->
- <div class="header">
- <div class="headertitle">
- <div class="title">scanline_read_iterator.hpp</div> </div>
- </div><!--header-->
- <div class="contents">
- <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Copyright 2007-2008 Christian Henning</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">//</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#ifndef BOOST_GIL_IO_SCANLINE_READ_ITERATOR_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#define BOOST_GIL_IO_SCANLINE_READ_ITERATOR_HPP</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <boost/gil/io/error.hpp></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <boost/gil/io/typedefs.hpp></span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <boost/iterator/iterator_facade.hpp></span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <iterator></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400)</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#pragma warning(push)</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#pragma warning(disable:4512) //assignment operator could not be generated</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">template</span>< <span class="keyword">typename</span> Reader ></div><div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1scanline__read__iterator.html"> 29</a></span> <span class="keyword">class </span><a class="code" href="classboost_1_1gil_1_1scanline__read__iterator.html">scanline_read_iterator</a> : <span class="keyword">public</span> boost::iterator_facade< scanline_read_iterator< Reader ></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  , byte_t*</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  , std::input_iterator_tag</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  ></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> {</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keyword">using</span> base_t = boost::iterator_facade</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="classboost_1_1gil_1_1scanline__read__iterator.html">scanline_read_iterator<Reader></a>,</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  byte_t*,</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  std::input_iterator_tag</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  >;</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="classboost_1_1gil_1_1scanline__read__iterator.html">scanline_read_iterator</a>( Reader& reader</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  , <span class="keywordtype">int</span> pos = 0</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  )</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  : _pos( pos )</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  , _read_scanline( <span class="keyword">true</span> )</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  , _skip_scanline( <span class="keyword">true</span> )</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  , _reader( reader )</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  {</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  _buffer = std::make_shared< buffer_t >( buffer_t( _reader._scanline_length ));</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  _buffer_start = &_buffer->front();</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  }</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">friend</span> <span class="keyword">class </span>boost::iterator_core_access;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordtype">void</span> increment()</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  {</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span>( _skip_scanline == <span class="keyword">true</span> )</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  _reader.skip( _buffer_start</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  , _pos</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  );</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  }</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  ++_pos;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  _skip_scanline = <span class="keyword">true</span>;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  _read_scanline = <span class="keyword">true</span>;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  }</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordtype">bool</span> <a class="code" href="group___s_t_l_optimizations.html#ga2902a23650ef266e80874ce5df076079">equal</a>( <span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1scanline__read__iterator.html">scanline_read_iterator</a>& rhs )<span class="keyword"> const</span></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">return</span> _pos == rhs._pos;</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  }</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">typename</span> base_t::reference dereference()<span class="keyword"> const</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">if</span>( _read_scanline == <span class="keyword">true</span> )</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  {</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  _reader.read( _buffer_start</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  , _pos</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  );</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  }</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  _skip_scanline = <span class="keyword">false</span>;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  _read_scanline = <span class="keyword">false</span>;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">return</span> _buffer_start;</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  Reader& _reader;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">mutable</span> <span class="keywordtype">int</span> _pos;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">mutable</span> <span class="keywordtype">bool</span> _read_scanline;</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">mutable</span> <span class="keywordtype">bool</span> _skip_scanline;</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keyword">using</span> buffer_t = std::vector<byte_t>;</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">using</span> buffer_ptr_t = std::shared_ptr<buffer_t>;</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  buffer_ptr_t _buffer;</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">mutable</span> byte_t* _buffer_start;</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> };</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor">#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400)</span></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor">#pragma warning(pop)</span></div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> } <span class="comment">// namespace gil</span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> } <span class="comment">// namespace boost</span></div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="classboost_1_1gil_1_1scanline__read__iterator_html"><div class="ttname"><a href="classboost_1_1gil_1_1scanline__read__iterator.html">boost::gil::scanline_read_iterator</a></div><div class="ttdoc">Input iterator to read images.</div><div class="ttdef"><b>Definition:</b> scanline_read_iterator.hpp:29</div></div>
- <div class="ttc" id="group___s_t_l_optimizations_html_ga2902a23650ef266e80874ce5df076079"><div class="ttname"><a href="group___s_t_l_optimizations.html#ga2902a23650ef266e80874ce5df076079">std::equal</a></div><div class="ttdeci">BOOST_FORCEINLINE bool equal(boost::gil::iterator_from_2d< Loc1 > first, boost::gil::iterator_from_2d< Loc1 > last, boost::gil::iterator_from_2d< Loc2 > first2)</div><div class="ttdoc">std::equal(I1,I1,I2) with I1 and I2 being a iterator_from_2d</div><div class="ttdef"><b>Definition:</b> algorithm.hpp:1029</div></div>
- </div><!-- fragment --></div><!-- contents -->
- <!-- HTML footer for doxygen 1.8.13-->
- <!-- start footer part -->
- <hr class="footer"/>
- <address class="footer">
- <small>
- Generated by  <a href="http://www.doxygen.org/index.html">doxygen</a> 1.8.15
- </small>
- </address>
- </body>
- </html>
|