Added C++ libxdf

C++/.gitignore

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+xdf.pro.user
+CMakeCache.txt
+CMakeFiles
+Makefile
+cmake_install.cmake
+CMakeLists.txt.user
+*.a
+*.dylib

C++/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.7)
+set(CMAKE_OSX_DEPLOYMENT_TARGET 10.9)
+
+project(libxdf)
+
+set(SOURCES
+    xdf.h
+    xdf.cpp
+    pugixml/pugiconfig.hpp
+    pugixml/pugixml.hpp
+    pugixml/pugixml.cpp
+    smarc/filtering.h
+    smarc/filtering.c
+    smarc/multi_stage.h
+    smarc/multi_stage.c
+    smarc/polyfilt.h
+    smarc/polyfilt.c
+    smarc/remez_lp.h
+    smarc/remez_lp.c
+    smarc/smarc.h
+    smarc/smarc.c
+    smarc/stage_impl.h
+    smarc/stage_impl.c
+)
+
+add_library(xdf-static STATIC ${SOURCES})
+add_library(xdf-shared SHARED ${SOURCES})
+
+set_property(TARGET xdf-static xdf-shared PROPERTY CXX_STANDARD 11)
+set_property(TARGET xdf-static xdf-shared PROPERTY C_STANDARD 99)
+set_target_properties(xdf-static PROPERTIES OUTPUT_NAME xdf)
+set_target_properties(xdf-shared PROPERTIES OUTPUT_NAME xdf)

C++/README.md

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+# Libxdf - a C++ library for loading [XDF](https://github.com/sccn/xdf/wiki/Specifications "Extensible Data Format") files
+
+
+* [Introduction](#intro)
+* [Download](#download)
+* [Quick-Start Guide](#quick)
+* [Documentation](#doc)
+* [Support](#support)
+
+
+## <a name="intro"></a>Introduction
+
+Libxdf is a cross-platform C++ library for loading multimodal, multi-rate signals stored in [XDF](https://github.com/sccn/xdf/wiki/Specifications  "Extensible Data Format") files.
+Libxdf is used in the  biosignal viewing application [SigViewer](https://github.com/cbrnr/sigviewer). It can also be integrated into other
+C++ applications.
+
+Libxdf is open-source, free, and actively maintained.
+
+
+## <a name="download"></a>Download
+
+* [Source code (zip)](https://github.com/Yida-Lin/libxdf/archive/0.94.zip)
+* [Source code (tar.gz)](https://github.com/Yida-Lin/libxdf/archive/0.94.tar.gz)
+* [Pre-built binaries](https://github.com/Yida-Lin/libxdf/releases)
+
+## <a name="quick"></a>Quick-Start Guide
+
+### Building libxdf
+Libxdf can be conveniently built either using `qmake` or `cmake`. Configuration files for both build tools are included with the source.
+
+### Use in conjunction with [SigViewer](https://github.com/cbrnr/sigviewer)
+
+Libxdf is a built-in component of [SigViewer](https://github.com/cbrnr/sigviewer). If you wish to build SigViewer from source, follow these steps:
+
+1. Download `xdf.h` and `libxdf.a` from the [release](https://github.com/Yida-Lin/libxdf/releases) page.
+2. Copy `xdf.h` into `sigviewer/external/include`
+3. Copy `libxdf.a` into `sigviewer/external/lib`
+4. Build and run Sigviewer
+
+
+![SigViewer using _libxdf_ to display signals in XDF files](docs/Example.png)
+
+Example: SigViewer using _libxdf_ to display signals in an XDF file.
+
+### Use in other C++ applications
+
+1. Build libxdf from source or use a pre-built binary release
+2. Instantiate an object of the `Xdf` class and call the `load_xdf` method.
+
+Example:
+
+```C++
+#include "xdf.h"
+
+Xdf XDFdata;
+XDFdata.load_xdf("C:/example.xdf");
+```
+
+To resample the signals to e.g. 100Hz:
+
+```C++
+XDFdata.resample(100);
+```
+
+The functions in libxdf must be called following a certain order. For instance, if you call the `subtractMean` function before you load any data, it will cause undefined behavior.
+
+The recommended order is shown here. Only `load_xdf` is mandatory.
+
+```C++
+XDFdata.load_xdf(std::string filepath);
+XDFdata.subtractMean();
+XDFdata.createLabels();
+XDFdata.resample(int sampleRate);
+XDFdata.freeUpTimeStamps();
+```
+
+Libxdf depends on third party libraries [Pugixml v1.8](http://pugixml.org/) for XML parsing and [Smarc](http://audio-smarc.sourceforge.net/) for resampling.
+
+## <a name="doc"></a> Documentation
+Detailed documentation was generated via [Doxygen](http://www.stack.nl/~dimitri/doxygen/index.html) and is available [here](docs/html/class_xdf.html).
+
+## <a name="SigViewer"></a> SigViewer Online Repo
+SigViewer Online Repository is [here](repository/Updates.xml).
+
+## <a name="support"></a>Support
+
+[Email author](mailto:yida.lin@outlook.com) or report a new [issue](https://github.com/Yida-Lin/libxdf/issues).

C++/_config.yml

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+theme: jekyll-theme-cayman
+description: [libxdf is a static C++ library for loading XDF files]
+show_downloads: ["true"]

C++/_layouts/default.html

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+<!DOCTYPE html>
+<html lang="en-us">
+  <head>
+    <meta charset="UTF-8">
+    <title>{{ page.title | default: site.title }}</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <meta name="theme-color" content="#157878">
+    <link href='https://fonts.googleapis.com/css?family=Open+Sans:400,700' rel='stylesheet' type='text/css'>
+    <link rel="stylesheet" href="{{ '/assets/css/style.css?v=' | append: site.github.build_revision | relative_url }}">
+  </head>
+  <body>
+    <section class="page-header">
+      <h1 class="project-name">{{ site.title | default: site.github.repository_name }}</h1>
+      <h2 class="project-tagline">{{ site.description | default: site.github.project_tagline }}</h2>
+      {% if site.github.is_project_page %}
+        <a href="{{ site.github.repository_url }}" class="btn">View on GitHub</a>
+      {% endif %}
+      {% if site.show_downloads %}
+		<a href="https://github.com/Yida-Lin/libxdf/releases" class="btn">Download</a>
+		<a href="docs/html/class_xdf.html" class="btn">Documentation</a>
+		<!--
+		<a href="{{ site.github.zip_url }}" class="btn">Download .zip</a>
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+		-->
+      {% endif %}
+    </section>
+
+    <section class="main-content">
+      {{ content }}
+
+      <footer class="site-footer">
+        {% if site.github.is_project_page %}
+          <span class="site-footer-owner"><a href="{{ site.github.repository_url }}">{{ site.github.repository_name }}</a> is maintained by <a href="{{ site.github.owner_url }}">{{ site.github.owner_name }}</a>.</span>
+        {% endif %}
+        <span class="site-footer-credits">This page was generated by <a href="https://pages.github.com">GitHub Pages</a>.</span>
+      </footer>
+    </section>
+
+    {% if site.google_analytics %}
+      <script type="text/javascript">
+        (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
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+        })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+
+        ga('create', '{{ site.google_analytics }}', 'auto');
+        ga('send', 'pageview');
+      </script>
+    {% endif %}
+  </body>
+</html>

C++/docs/html/_r_e_a_d_m_e_8md.html

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+<html xmlns="http://www.w3.org/1999/xhtml">
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+<meta name="generator" content="Doxygen 1.8.12"/>
+<meta name="viewport" content="width=device-width, initial-scale=1"/>
+<title>libxdf: C:/Users/Yida Lin/Documents/GitHub/libxdf/libxdf/README.md File Reference</title>
+<link href="tabs.css" rel="stylesheet" type="text/css"/>
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+<table cellspacing="0" cellpadding="0">
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+   <div id="projectname">libxdf
+   &#160;<span id="projectnumber">0.92</span>
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+   <div id="projectbrief">A static C++ library for loading XDF files</div>
+  </td>
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+ </tbody>
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+</div>
+<!-- end header part -->
+<!-- Generated by Doxygen 1.8.12 -->
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+</div>
+
+<div class="header">
+  <div class="headertitle">
+<div class="title">C:/Users/Yida Lin/Documents/GitHub/libxdf/libxdf/README.md File Reference</div>  </div>
+</div><!--header-->
+<div class="contents">
+</div><!-- contents -->
+</div><!-- doc-content -->
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+    <li class="footer">Generated by
+    <a href="http://www.doxygen.org/index.html">
+    <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.12 </li>
+  </ul>
+</div>
+</body>
+</html>

C++/docs/html/annotated.html

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+<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
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+<table cellspacing="0" cellpadding="0">
+ <tbody>
+ <tr style="height: 56px;">
+  <td id="projectalign" style="padding-left: 0.5em;">
+   <div id="projectname">libxdf
+   &#160;<span id="projectnumber">0.92</span>
+   </div>
+   <div id="projectbrief">A static C++ library for loading XDF files</div>
+  </td>
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+ </tbody>
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+<iframe src="javascript:void(0)" frameborder="0" 
+        name="MSearchResults" id="MSearchResults">
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+</div>
+
+<div class="header">
+  <div class="headertitle">
+<div class="title">Class List</div>  </div>
+</div><!--header-->
+<div class="contents">
+<div class="textblock">Here are the classes, structs, unions and interfaces with brief descriptions:</div><div class="directory">
+<div class="levels">[detail level <span onclick="javascript:toggleLevel(1);">1</span><span onclick="javascript:toggleLevel(2);">2</span>]</div><table class="directory">
+<tr id="row_0_" class="even"><td class="entry"><span style="width:0px;display:inline-block;">&#160;</span><span id="arr_0_" class="arrow" onclick="toggleFolder('0_')">&#9660;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="class_xdf.html" target="_self">Xdf</a></td><td class="desc"></td></tr>
+<tr id="row_0_0_"><td class="entry"><span style="width:32px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_xdf_1_1_stream.html" target="_self">Stream</a></td><td class="desc"></td></tr>
+</table>
+</div><!-- directory -->
+</div><!-- contents -->
+</div><!-- doc-content -->
+<!-- start footer part -->
+<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
+  <ul>
+    <li class="footer">Generated by
+    <a href="http://www.doxygen.org/index.html">
+    <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.12 </li>
+  </ul>
+</div>
+</body>
+</html>

C++/docs/html/annotated_dup.js

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