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<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">//</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Copyright 2012 Christian Henning</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">//</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#ifndef BOOST_GIL_IO_MAKE_BACKEND_HPP</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#define BOOST_GIL_IO_MAKE_BACKEND_HPP</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <boost/gil/detail/mp11.hpp></span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <boost/gil/io/get_reader.hpp></span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">template</span> <<span class="keyword">typename</span> String, <span class="keyword">typename</span> FormatTag></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">inline</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">auto</span> make_reader_backend(</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  String <span class="keyword">const</span>& file_name, image_read_settings<FormatTag> <span class="keyword">const</span>& settings,</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="keyword">typename</span> std::enable_if</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  mp11::mp_and</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  detail::is_supported_path_spec<String>,</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  is_format_tag<FormatTag></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  >::value</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  >::type* <span class="comment">/*dummy*/</span> = <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  -> <span class="keyword">typename</span> get_reader_backend<String, FormatTag>::type</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>  <span class="keyword">using</span> device_t = <span class="keyword">typename</span> get_read_device<String, FormatTag>::type;</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  device_t device(</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  detail::convert_to_native_string(file_name),</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">typename</span> detail::file_stream_device<FormatTag>::read_tag());</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordflow">return</span> reader_backend<device_t, FormatTag>(device, settings);</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> }</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> <span class="keyword">template</span> <<span class="keyword">typename</span> FormatTag></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">inline</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">auto</span> make_reader_backend(</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  std::wstring <span class="keyword">const</span>& file_name, image_read_settings<FormatTag> <span class="keyword">const</span>& settings)</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  -> <span class="keyword">typename</span> get_reader_backend<std::wstring, FormatTag>::type</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> {</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">char</span> <span class="keyword">const</span>* str = detail::convert_to_native_string(file_name);</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">using</span> device_t = <span class="keyword">typename</span> get_read_device<std::wstring, FormatTag>::type;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  device_t device(str, <span class="keyword">typename</span> detail::file_stream_device<FormatTag>::read_tag());</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">delete</span>[] str; <span class="comment">// TODO: RAII</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span> reader_backend<device_t, FormatTag>(device, settings);</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="preprocessor">#ifdef BOOST_GIL_IO_ADD_FS_PATH_SUPPORT</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">template</span> <<span class="keyword">typename</span> FormatTag></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">inline</span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">auto</span> make_reader_backend(</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  filesystem::path <span class="keyword">const</span>& path,</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  image_read_settings<FormatTag> <span class="keyword">const</span>& settings)</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  -> <span class="keyword">typename</span> get_reader_backend<std::wstring, FormatTag>::type</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> {</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">return</span> make_reader_backend(path.wstring(), settings);</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> <span class="preprocessor">#endif // BOOST_GIL_IO_ADD_FS_PATH_SUPPORT</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> <span class="keyword">template</span> <<span class="keyword">typename</span> Device, <span class="keyword">typename</span> FormatTag></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="keyword">inline</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">auto</span> make_reader_backend(Device& io_dev, image_read_settings<FormatTag> <span class="keyword">const</span>& settings,</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keyword">typename</span> std::enable_if</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>  mp11::mp_and</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  detail::is_adaptable_input_device<FormatTag, Device>,</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  is_format_tag<FormatTag></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  >::value</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  >::type* <span class="comment">/*dummy*/</span> = <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  -> <span class="keyword">typename</span> get_reader_backend<Device, FormatTag>::type</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> {</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keyword">using</span> device_t = <span class="keyword">typename</span> get_read_device<Device, FormatTag>::type;</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  device_t device(io_dev);</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">return</span> reader_backend<device_t, FormatTag>(device, settings);</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> <span class="keyword">template</span> <<span class="keyword">typename</span> String, <span class="keyword">typename</span> FormatTag></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="keyword">inline</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="keyword">auto</span> make_reader_backend(String <span class="keyword">const</span>& file_name, FormatTag <span class="keyword">const</span>&,</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">typename</span> std::enable_if</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  mp11::mp_and</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>  detail::is_supported_path_spec<String>,</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  is_format_tag<FormatTag></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  >::value</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  >::type* <span class="comment">/*dummy*/</span> = <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  -> <span class="keyword">typename</span> get_reader_backend<String, FormatTag>::type</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> {</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">return</span> make_reader_backend(file_name, image_read_settings<FormatTag>());</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> </div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Device, <span class="keyword">typename</span> FormatTag></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="keyword">inline</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="keyword">auto</span> make_reader_backend(Device& io_dev, FormatTag <span class="keyword">const</span>&,</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">typename</span> std::enable_if</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>  mp11::mp_and</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  detail::is_adaptable_input_device<FormatTag, Device>,</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  is_format_tag<FormatTag></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  >::value</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  >::type* <span class="comment">/*dummy*/</span> = <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  -> <span class="keyword">typename</span> get_reader_backend<Device, FormatTag>::type</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="keywordflow">return</span> make_reader_backend(io_dev, image_read_settings<FormatTag>());</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> }</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> }} <span class="comment">// namespace boost::gil</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="preprocessor">#endif</span></div></div><!-- fragment --></div><!-- contents -->
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