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<li class="navelem"><a class="el" href="../../dir_3f8eec2fc361645de4b1ec14c19fffc7.html">packager</a></li><li class="navelem"><a class="el" href="../../dir_b885194e7131202a9b4650a8967e838c.html">mpd</a></li><li class="navelem"><a class="el" href="../../dir_6fe4b0529cd3ec97045d3314254a0cce.html">base</a></li> </ul>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2014 Google Inc. All rights reserved.</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">// Use of this source code is governed by a BSD-style</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// license that can be found in the LICENSE file or at</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "packager/mpd/base/mpd_builder.h"</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <algorithm></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 "packager/base/files/file_path.h"</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/base/logging.h"</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/base/optional.h"</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "packager/base/strings/string_number_conversions.h"</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "packager/base/strings/stringprintf.h"</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "packager/base/synchronization/lock.h"</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "packager/base/time/default_clock.h"</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include "packager/base/time/time.h"</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include "packager/mpd/base/adaptation_set.h"</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include "packager/mpd/base/mpd_utils.h"</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "packager/mpd/base/period.h"</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include "packager/mpd/base/representation.h"</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "packager/mpd/base/xml/xml_node.h"</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "packager/version/version.h"</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">namespace </span><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">using</span> base::FilePath;</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">using</span> xml::XmlNode;</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">namespace </span>{</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="keywordtype">void</span> AddMpdNameSpaceInfo(XmlNode* mpd) {</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  DCHECK(mpd);</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">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kXmlNamespace[] = <span class="stringliteral">"urn:mpeg:dash:schema:mpd:2011"</span>;</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kXmlNamespaceXsi[] =</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="stringliteral">"http://www.w3.org/2001/XMLSchema-instance"</span>;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kXmlNamespaceXlink[] = <span class="stringliteral">"http://www.w3.org/1999/xlink"</span>;</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kDashSchemaMpd2011[] =</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="stringliteral">"urn:mpeg:dash:schema:mpd:2011 DASH-MPD.xsd"</span>;</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kCencNamespace[] = <span class="stringliteral">"urn:mpeg:cenc:2013"</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>  mpd->SetStringAttribute(<span class="stringliteral">"xmlns"</span>, kXmlNamespace);</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  mpd->SetStringAttribute(<span class="stringliteral">"xmlns:xsi"</span>, kXmlNamespaceXsi);</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  mpd->SetStringAttribute(<span class="stringliteral">"xmlns:xlink"</span>, kXmlNamespaceXlink);</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  mpd->SetStringAttribute(<span class="stringliteral">"xsi:schemaLocation"</span>, kDashSchemaMpd2011);</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  mpd->SetStringAttribute(<span class="stringliteral">"xmlns:cenc"</span>, kCencNamespace);</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> </div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keywordtype">bool</span> Positive(<span class="keywordtype">double</span> d) {</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">return</span> d > 0.0;</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> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">// Return current time in XML DateTime format. The value is in UTC, so the</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">// string ends with a 'Z'.</span></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> std::string XmlDateTimeNowWithOffset(</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  int32_t offset_seconds,</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  base::Clock* clock) {</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  base::Time time = clock->Now();</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  time += base::TimeDelta::FromSeconds(offset_seconds);</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  base::Time::Exploded time_exploded;</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  time.UTCExplode(&time_exploded);</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>  <span class="keywordflow">return</span> base::StringPrintf(<span class="stringliteral">"%4d-%02d-%02dT%02d:%02d:%02dZ"</span>, time_exploded.year,</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  time_exploded.month, time_exploded.day_of_month,</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  time_exploded.hour, time_exploded.minute,</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  time_exploded.second);</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> </div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="keywordtype">void</span> SetIfPositive(<span class="keyword">const</span> <span class="keywordtype">char</span>* attr_name, <span class="keywordtype">double</span> value, XmlNode* mpd) {</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">if</span> (Positive(value)) {</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  mpd->SetStringAttribute(attr_name, SecondsToXmlDuration(value));</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> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> std::string MakePathRelative(<span class="keyword">const</span> std::string& media_path,</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">const</span> FilePath& parent_path) {</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  FilePath relative_path;</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">const</span> FilePath child_path = FilePath::FromUTF8Unsafe(media_path);</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> is_child =</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  parent_path.AppendRelativePath(child_path, &relative_path);</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">if</span> (!is_child)</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  relative_path = child_path;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">return</span> relative_path.NormalizePathSeparatorsTo(<span class="charliteral">'/'</span>).AsUTF8Unsafe();</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> }</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> <span class="comment">// Spooky static initialization/cleanup of libxml.</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="keyword">class </span>LibXmlInitializer {</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  LibXmlInitializer() : initialized_(false) {</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  base::AutoLock lock(lock_);</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">if</span> (!initialized_) {</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  xmlInitParser();</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  initialized_ = <span class="keyword">true</span>;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  }</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  }</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>  ~LibXmlInitializer() {</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  base::AutoLock lock(lock_);</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">if</span> (initialized_) {</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  xmlCleanupParser();</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  initialized_ = <span class="keyword">false</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>  }</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>  <span class="keyword">private</span>:</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  base::Lock lock_;</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordtype">bool</span> initialized_;</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>  DISALLOW_COPY_AND_ASSIGN(LibXmlInitializer);</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> };</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> } <span class="comment">// namespace</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div><div class="line"><a name="l00116"></a><span class="lineno"><a class="line" href="../../dc/da1/classshaka_1_1MpdBuilder.html#ab364102e01afedd8a4dcc9be4fdcc0ab"> 116</a></span> <a class="code" href="../../dc/da1/classshaka_1_1MpdBuilder.html#ab364102e01afedd8a4dcc9be4fdcc0ab">MpdBuilder::MpdBuilder</a>(<span class="keyword">const</span> <a class="code" href="../../d1/df3/structshaka_1_1MpdOptions.html">MpdOptions</a>& mpd_options)</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  : mpd_options_(mpd_options), clock_(new <a class="code" href="../../d2/dc5/namespacebase.html">base</a>::DefaultClock()) {}</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> MpdBuilder::~MpdBuilder() {}</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div><div class="line"><a name="l00121"></a><span class="lineno"><a class="line" href="../../dc/da1/classshaka_1_1MpdBuilder.html#ab6fd968035d1cba5060fe23a107f8bdb"> 121</a></span> <span class="keywordtype">void</span> <a class="code" href="../../dc/da1/classshaka_1_1MpdBuilder.html#ab6fd968035d1cba5060fe23a107f8bdb">MpdBuilder::AddBaseUrl</a>(<span class="keyword">const</span> std::string& base_url) {</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  base_urls_.push_back(base_url);</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> }</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div><div class="line"><a name="l00125"></a><span class="lineno"><a class="line" href="../../dc/da1/classshaka_1_1MpdBuilder.html#ae03eb3ac55f8b1360a57a1af16f593e6"> 125</a></span> <a class="code" href="../../d8/de1/classshaka_1_1Period.html">Period</a>* <a class="code" href="../../dc/da1/classshaka_1_1MpdBuilder.html#ae03eb3ac55f8b1360a57a1af16f593e6">MpdBuilder::GetOrCreatePeriod</a>(<span class="keywordtype">double</span> start_time_in_seconds) {</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& period : periods_) {</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> kPeriodTimeDriftThresholdInSeconds = 1.0;</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> match =</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  std::fabs(period->start_time_in_seconds() - start_time_in_seconds) <</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  kPeriodTimeDriftThresholdInSeconds;</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">if</span> (match)</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">return</span> period.get();</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  }</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  periods_.emplace_back(<span class="keyword">new</span> <a class="code" href="../../d8/de1/classshaka_1_1Period.html">Period</a>(period_counter_++, start_time_in_seconds,</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  mpd_options_, &representation_counter_));</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">return</span> periods_.back().get();</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> }</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div><div class="line"><a name="l00139"></a><span class="lineno"><a class="line" href="../../dc/da1/classshaka_1_1MpdBuilder.html#af7eae5cc11141eed2b5451d969e57db6"> 139</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../dc/da1/classshaka_1_1MpdBuilder.html#af7eae5cc11141eed2b5451d969e57db6">MpdBuilder::ToString</a>(std::string* output) {</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  DCHECK(output);</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keyword">static</span> LibXmlInitializer lib_xml_initializer;</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  xml::scoped_xml_ptr<xmlDoc> doc(GenerateMpd());</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">if</span> (!doc)</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kNiceFormat = 1;</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordtype">int</span> doc_str_size = 0;</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  xmlChar* doc_str = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  xmlDocDumpFormatMemoryEnc(doc.get(), &doc_str, &doc_str_size, <span class="stringliteral">"UTF-8"</span>,</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  kNiceFormat);</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  output->assign(doc_str, doc_str + doc_str_size);</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  xmlFree(doc_str);</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="comment">// Cleanup, free the doc.</span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  doc.reset();</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> }</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> xmlDocPtr MpdBuilder::GenerateMpd() {</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="comment">// Setup nodes.</span></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kXmlVersion[] = <span class="stringliteral">"1.0"</span>;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  xml::scoped_xml_ptr<xmlDoc> doc(xmlNewDoc(BAD_CAST kXmlVersion));</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html">XmlNode</a> mpd(<span class="stringliteral">"MPD"</span>);</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">// Add baseurls to MPD.</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> std::string& base_url : base_urls_) {</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html">XmlNode</a> xml_base_url(<span class="stringliteral">"BaseURL"</span>);</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  xml_base_url.<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#a73d758186470e7dbcb4f4339eb53458c">SetContent</a>(base_url);</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">if</span> (!mpd.<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#a5f8deed2a9bb707c40db24374b3b7fbd">AddChild</a>(xml_base_url.<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#a0be0a3e9b041978e118d994c1f13e8fb">PassScopedPtr</a>()))</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  }</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordtype">bool</span> output_period_duration = <span class="keyword">false</span>;</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordflow">if</span> (mpd_options_.mpd_type == MpdType::kStatic) {</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  UpdatePeriodDurationAndPresentationTimestamp();</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="comment">// Only output period duration if there are more than one period. In the</span></div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// case of only one period, Period@duration is redundant as it is identical</span></div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="comment">// to Mpd Duration so the convention is not to output Period@duration.</span></div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  output_period_duration = periods_.size() > 1;</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& period : periods_) {</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  xml::scoped_xml_ptr<xmlNode> period_node(</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  period->GetXml(output_period_duration));</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordflow">if</span> (!period_node || !mpd.<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#a5f8deed2a9bb707c40db24374b3b7fbd">AddChild</a>(std::move(period_node)))</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  }</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  AddMpdNameSpaceInfo(&mpd);</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kOnDemandProfile[] =</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="stringliteral">"urn:mpeg:dash:profile:isoff-on-demand:2011"</span>;</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kLiveProfile[] =</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="stringliteral">"urn:mpeg:dash:profile:isoff-live:2011"</span>;</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">switch</span> (mpd_options_.dash_profile) {</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">case</span> DashProfile::kOnDemand:</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  mpd.<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#afc83f9dbaedc8ba0fc9cc1153ac23329">SetStringAttribute</a>(<span class="stringliteral">"profiles"</span>, kOnDemandProfile);</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">case</span> DashProfile::kLive:</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  mpd.<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#afc83f9dbaedc8ba0fc9cc1153ac23329">SetStringAttribute</a>(<span class="stringliteral">"profiles"</span>, kLiveProfile);</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">default</span>:</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  NOTREACHED() << <span class="stringliteral">"Unknown DASH profile: "</span></div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  << <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(mpd_options_.dash_profile);</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  }</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span> </div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  AddCommonMpdInfo(&mpd);</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">switch</span> (mpd_options_.mpd_type) {</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">case</span> MpdType::kStatic:</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  AddStaticMpdInfo(&mpd);</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">case</span> MpdType::kDynamic:</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  AddDynamicMpdInfo(&mpd);</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="comment">// Must be after Period element.</span></div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  AddUtcTiming(&mpd);</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">default</span>:</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  NOTREACHED() << <span class="stringliteral">"Unknown MPD type: "</span></div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  << <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(mpd_options_.mpd_type);</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  }</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  DCHECK(doc);</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keyword">const</span> std::string version = GetPackagerVersion();</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keywordflow">if</span> (!version.empty()) {</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  std::string version_string =</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  base::StringPrintf(<span class="stringliteral">"Generated with %s version %s"</span>,</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  GetPackagerProjectUrl().c_str(), version.c_str());</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  xml::scoped_xml_ptr<xmlNode> comment(</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  xmlNewDocComment(doc.get(), BAD_CAST version_string.c_str()));</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  xmlDocSetRootElement(doc.get(), comment.get());</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  xmlAddSibling(comment.release(), mpd.<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#ae5cb2c3000ccbd53c0a1867db0b8a2d0">Release</a>());</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  xmlDocSetRootElement(doc.get(), mpd.<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#ae5cb2c3000ccbd53c0a1867db0b8a2d0">Release</a>());</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  }</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">return</span> doc.release();</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span> }</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span> </div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> <span class="keywordtype">void</span> MpdBuilder::AddCommonMpdInfo(<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html">XmlNode</a>* mpd_node) {</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="keywordflow">if</span> (Positive(mpd_options_.mpd_params.<a class="code" href="../../df/ddc/structshaka_1_1MpdParams.html#aee1510b64b9acbc17b8bfccac2e132a3">min_buffer_time</a>)) {</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  mpd_node-><a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#afc83f9dbaedc8ba0fc9cc1153ac23329">SetStringAttribute</a>(</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="stringliteral">"minBufferTime"</span>,</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  SecondsToXmlDuration(mpd_options_.mpd_params.<a class="code" href="../../df/ddc/structshaka_1_1MpdParams.html#aee1510b64b9acbc17b8bfccac2e132a3">min_buffer_time</a>));</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  LOG(ERROR) << <span class="stringliteral">"minBufferTime value not specified."</span>;</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="comment">// TODO(tinskip): Propagate error.</span></div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  }</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span> }</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span> </div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span> <span class="keywordtype">void</span> MpdBuilder::AddStaticMpdInfo(<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html">XmlNode</a>* mpd_node) {</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  DCHECK(mpd_node);</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  DCHECK_EQ(MpdType::kStatic, mpd_options_.mpd_type);</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> </div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kStaticMpdType[] = <span class="stringliteral">"static"</span>;</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  mpd_node-><a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#afc83f9dbaedc8ba0fc9cc1153ac23329">SetStringAttribute</a>(<span class="stringliteral">"type"</span>, kStaticMpdType);</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  mpd_node-><a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#afc83f9dbaedc8ba0fc9cc1153ac23329">SetStringAttribute</a>(<span class="stringliteral">"mediaPresentationDuration"</span>,</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  SecondsToXmlDuration(GetStaticMpdDuration()));</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span> }</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span> </div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="keywordtype">void</span> MpdBuilder::AddDynamicMpdInfo(<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html">XmlNode</a>* mpd_node) {</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  DCHECK(mpd_node);</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  DCHECK_EQ(MpdType::kDynamic, mpd_options_.mpd_type);</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span> </div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kDynamicMpdType[] = <span class="stringliteral">"dynamic"</span>;</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  mpd_node-><a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#afc83f9dbaedc8ba0fc9cc1153ac23329">SetStringAttribute</a>(<span class="stringliteral">"type"</span>, kDynamicMpdType);</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span> </div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="comment">// No offset from NOW.</span></div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  mpd_node-><a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#afc83f9dbaedc8ba0fc9cc1153ac23329">SetStringAttribute</a>(<span class="stringliteral">"publishTime"</span>,</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  XmlDateTimeNowWithOffset(0, clock_.get()));</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span> </div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="comment">// 'availabilityStartTime' is required for dynamic profile. Calculate if</span></div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="comment">// not already calculated.</span></div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keywordflow">if</span> (availability_start_time_.empty()) {</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keywordtype">double</span> earliest_presentation_time;</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="keywordflow">if</span> (GetEarliestTimestamp(&earliest_presentation_time)) {</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  availability_start_time_ = XmlDateTimeNowWithOffset(</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  -std::ceil(earliest_presentation_time), clock_.get());</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  LOG(ERROR) << <span class="stringliteral">"Could not determine the earliest segment presentation "</span></div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="stringliteral">"time for availabilityStartTime calculation."</span>;</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="comment">// TODO(tinskip). Propagate an error.</span></div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  }</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  }</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordflow">if</span> (!availability_start_time_.empty())</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  mpd_node-><a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#afc83f9dbaedc8ba0fc9cc1153ac23329">SetStringAttribute</a>(<span class="stringliteral">"availabilityStartTime"</span>,</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  availability_start_time_);</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span> </div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordflow">if</span> (Positive(mpd_options_.mpd_params.<a class="code" href="../../df/ddc/structshaka_1_1MpdParams.html#a4a5dafe570fd7e35749ce12d83ca9559">minimum_update_period</a>)) {</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  mpd_node-><a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#afc83f9dbaedc8ba0fc9cc1153ac23329">SetStringAttribute</a>(</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="stringliteral">"minimumUpdatePeriod"</span>,</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  SecondsToXmlDuration(mpd_options_.mpd_params.<a class="code" href="../../df/ddc/structshaka_1_1MpdParams.html#a4a5dafe570fd7e35749ce12d83ca9559">minimum_update_period</a>));</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  LOG(WARNING) << <span class="stringliteral">"The profile is dynamic but no minimumUpdatePeriod "</span></div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="stringliteral">"specified."</span>;</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  }</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span> </div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  SetIfPositive(<span class="stringliteral">"timeShiftBufferDepth"</span>,</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  mpd_options_.mpd_params.<a class="code" href="../../df/ddc/structshaka_1_1MpdParams.html#a95e4824708c8de4b882b86772f680032">time_shift_buffer_depth</a>, mpd_node);</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  SetIfPositive(<span class="stringliteral">"suggestedPresentationDelay"</span>,</div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  mpd_options_.mpd_params.suggested_presentation_delay, mpd_node);</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span> }</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span> </div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span> <span class="keywordtype">void</span> MpdBuilder::AddUtcTiming(<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html">XmlNode</a>* mpd_node) {</div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  DCHECK(mpd_node);</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  DCHECK_EQ(MpdType::kDynamic, mpd_options_.mpd_type);</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span> </div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="../../d3/d6e/structshaka_1_1MpdParams_1_1UtcTiming.html">MpdParams::UtcTiming</a>& utc_timing :</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  mpd_options_.mpd_params.utc_timings) {</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html">XmlNode</a> utc_timing_node(<span class="stringliteral">"UTCTiming"</span>);</div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  utc_timing_node.<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#afc83f9dbaedc8ba0fc9cc1153ac23329">SetStringAttribute</a>(<span class="stringliteral">"schemeIdUri"</span>, utc_timing.scheme_id_uri);</div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  utc_timing_node.<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#afc83f9dbaedc8ba0fc9cc1153ac23329">SetStringAttribute</a>(<span class="stringliteral">"value"</span>, utc_timing.value);</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  mpd_node-><a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#a5f8deed2a9bb707c40db24374b3b7fbd">AddChild</a>(utc_timing_node.<a class="code" href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#a0be0a3e9b041978e118d994c1f13e8fb">PassScopedPtr</a>());</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  }</div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span> }</div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span> </div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span> <span class="keywordtype">float</span> MpdBuilder::GetStaticMpdDuration() {</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  DCHECK_EQ(MpdType::kStatic, mpd_options_.mpd_type);</div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span> </div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keywordtype">float</span> total_duration = 0.0f;</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& period : periods_) {</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  total_duration += period->duration_seconds();</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  }</div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keywordflow">return</span> total_duration;</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span> }</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span> </div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span> <span class="keywordtype">bool</span> MpdBuilder::GetEarliestTimestamp(<span class="keywordtype">double</span>* timestamp_seconds) {</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  DCHECK(timestamp_seconds);</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  DCHECK(!periods_.empty());</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordtype">double</span> timestamp = 0;</div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordtype">double</span> earliest_timestamp = -1;</div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="comment">// TODO(kqyang): This is used to set availabilityStartTime. We may consider</span></div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="comment">// set presentationTimeOffset in the Representations then we can set</span></div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="comment">// availabilityStartTime to the time when MPD is first generated.</span></div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="comment">// The first period should have the earliest timestamp.</span></div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>* adaptation_set : periods_.front()->GetAdaptationSets()) {</div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>* representation : adaptation_set->GetRepresentations()) {</div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="keywordflow">if</span> (representation->GetStartAndEndTimestamps(&timestamp, <span class="keyword">nullptr</span>) &&</div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  (earliest_timestamp < 0 || timestamp < earliest_timestamp)) {</div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  earliest_timestamp = timestamp;</div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  }</div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  }</div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  }</div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordflow">if</span> (earliest_timestamp < 0)</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  *timestamp_seconds = earliest_timestamp;</div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span> }</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span> </div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span> <span class="keywordtype">void</span> MpdBuilder::UpdatePeriodDurationAndPresentationTimestamp() {</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  DCHECK_EQ(MpdType::kStatic, mpd_options_.mpd_type);</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span> </div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& period : periods_) {</div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  std::list<Representation*> video_representations;</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  std::list<Representation*> non_video_representations;</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& adaptation_set : period->GetAdaptationSets()) {</div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& representations = adaptation_set->GetRepresentations();</div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordflow">if</span> (adaptation_set->IsVideo()) {</div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  video_representations.insert(video_representations.end(),</div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  representations.begin(),</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  representations.end());</div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  non_video_representations.insert(non_video_representations.end(),</div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  representations.begin(),</div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  representations.end());</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  }</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  }</div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span> </div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  base::Optional<double> earliest_start_time;</div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  base::Optional<double> latest_end_time;</div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="comment">// The timestamps are based on Video Representations if exist.</span></div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& representations = video_representations.size() > 0</div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  ? video_representations</div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  : non_video_representations;</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& representation : representations) {</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keywordtype">double</span> start_time = 0;</div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="keywordtype">double</span> end_time = 0;</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">if</span> (representation->GetStartAndEndTimestamps(&start_time, &end_time)) {</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  earliest_start_time =</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  std::min(earliest_start_time.value_or(start_time), start_time);</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  latest_end_time =</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  std::max(latest_end_time.value_or(end_time), end_time);</div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  }</div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  }</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span> </div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="keywordflow">if</span> (!earliest_start_time)</div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span> </div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  period->set_duration_seconds(*latest_end_time - *earliest_start_time);</div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span> </div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keywordtype">double</span> presentation_time_offset = *earliest_start_time;</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& adaptation_set : period->GetAdaptationSets()) {</div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& representation : adaptation_set->GetRepresentations()) {</div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  representation->SetPresentationTimeOffset(presentation_time_offset);</div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  }</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  }</div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  }</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span> }</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span> </div><div class="line"><a name="l00402"></a><span class="lineno"><a class="line" href="../../dc/da1/classshaka_1_1MpdBuilder.html#a247a9c807274d4e707530f24e2d207f9"> 402</a></span> <span class="keywordtype">void</span> <a class="code" href="../../dc/da1/classshaka_1_1MpdBuilder.html#a247a9c807274d4e707530f24e2d207f9">MpdBuilder::MakePathsRelativeToMpd</a>(<span class="keyword">const</span> std::string& mpd_path,</div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  MediaInfo* media_info) {</div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  DCHECK(media_info);</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <span class="keyword">const</span> std::string kFileProtocol(<span class="stringliteral">"file://"</span>);</div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  std::string mpd_file_path = (mpd_path.find(kFileProtocol) == 0)</div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  ? mpd_path.substr(kFileProtocol.size())</div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  : mpd_path;</div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span> </div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="keywordflow">if</span> (!mpd_file_path.empty()) {</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <span class="keyword">const</span> FilePath mpd_dir(FilePath::FromUTF8Unsafe(mpd_file_path)</div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  .DirName()</div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  .AsEndingWithSeparator());</div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keywordflow">if</span> (!mpd_dir.empty()) {</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="keywordflow">if</span> (media_info->has_media_file_name()) {</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  media_info->set_media_file_url(</div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  MakePathRelative(media_info->media_file_name(), mpd_dir));</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  }</div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="keywordflow">if</span> (media_info->has_init_segment_name()) {</div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  media_info->set_init_segment_url(</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  MakePathRelative(media_info->init_segment_name(), mpd_dir));</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  }</div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  <span class="keywordflow">if</span> (media_info->has_segment_template()) {</div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  media_info->set_segment_template_url(</div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  MakePathRelative(media_info->segment_template(), mpd_dir));</div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  }</div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  }</div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  }</div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span> }</div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span> </div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span> } <span class="comment">// namespace shaka</span></div><div class="ttc" id="structshaka_1_1MpdParams_html_aee1510b64b9acbc17b8bfccac2e132a3"><div class="ttname"><a href="../../df/ddc/structshaka_1_1MpdParams.html#aee1510b64b9acbc17b8bfccac2e132a3">shaka::MpdParams::min_buffer_time</a></div><div class="ttdeci">double min_buffer_time</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d07/mpd__params_8h_source.html#l00027">mpd_params.h:27</a></div></div>
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<div class="ttc" id="structshaka_1_1MpdParams_1_1UtcTiming_html"><div class="ttname"><a href="../../d3/d6e/structshaka_1_1MpdParams_1_1UtcTiming.html">shaka::MpdParams::UtcTiming</a></div><div class="ttdoc">UTCTimings. For dynamic MPD only. </div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d07/mpd__params_8h_source.html#l00048">mpd_params.h:48</a></div></div>
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<div class="ttc" id="classshaka_1_1xml_1_1XmlNode_html"><div class="ttname"><a href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html">shaka::xml::XmlNode</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/de7/xml__node_8h_source.html#l00032">xml_node.h:32</a></div></div>
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<div class="ttc" id="classshaka_1_1xml_1_1XmlNode_html_a0be0a3e9b041978e118d994c1f13e8fb"><div class="ttname"><a href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#a0be0a3e9b041978e118d994c1f13e8fb">shaka::xml::XmlNode::PassScopedPtr</a></div><div class="ttdeci">scoped_xml_ptr< xmlNode > PassScopedPtr()</div><div class="ttdef"><b>Definition:</b> <a href="../../df/d96/xml__node_8cc_source.html#l00169">xml_node.cc:169</a></div></div>
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<div class="ttc" id="namespaceshaka_html"><div class="ttname"><a href="../../d8/daf/namespaceshaka.html">shaka</a></div><div class="ttdoc">All the methods that are virtual are virtual for mocking. </div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d15/gflags__hex__bytes_8cc_source.html#l00011">gflags_hex_bytes.cc:11</a></div></div>
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<div class="ttc" id="classshaka_1_1xml_1_1XmlNode_html_afc83f9dbaedc8ba0fc9cc1153ac23329"><div class="ttname"><a href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#afc83f9dbaedc8ba0fc9cc1153ac23329">shaka::xml::XmlNode::SetStringAttribute</a></div><div class="ttdeci">void SetStringAttribute(const char *attribute_name, const std::string &attribute)</div><div class="ttdef"><b>Definition:</b> <a href="../../df/d96/xml__node_8cc_source.html#l00137">xml_node.cc:137</a></div></div>
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<div class="ttc" id="classshaka_1_1xml_1_1XmlNode_html_a5f8deed2a9bb707c40db24374b3b7fbd"><div class="ttname"><a href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#a5f8deed2a9bb707c40db24374b3b7fbd">shaka::xml::XmlNode::AddChild</a></div><div class="ttdeci">bool AddChild(scoped_xml_ptr< xmlNode > child)</div><div class="ttdef"><b>Definition:</b> <a href="../../df/d96/xml__node_8cc_source.html#l00095">xml_node.cc:95</a></div></div>
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<div class="ttc" id="classshaka_1_1xml_1_1XmlNode_html_ae5cb2c3000ccbd53c0a1867db0b8a2d0"><div class="ttname"><a href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#ae5cb2c3000ccbd53c0a1867db0b8a2d0">shaka::xml::XmlNode::Release</a></div><div class="ttdeci">xmlNodePtr Release()</div><div class="ttdef"><b>Definition:</b> <a href="../../df/d96/xml__node_8cc_source.html#l00175">xml_node.cc:175</a></div></div>
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<div class="ttc" id="classshaka_1_1MpdBuilder_html_ae03eb3ac55f8b1360a57a1af16f593e6"><div class="ttname"><a href="../../dc/da1/classshaka_1_1MpdBuilder.html#ae03eb3ac55f8b1360a57a1af16f593e6">shaka::MpdBuilder::GetOrCreatePeriod</a></div><div class="ttdeci">virtual Period * GetOrCreatePeriod(double start_time_in_seconds)</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d11/mpd__builder_8cc_source.html#l00125">mpd_builder.cc:125</a></div></div>
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<div class="ttc" id="classshaka_1_1MpdBuilder_html_ab364102e01afedd8a4dcc9be4fdcc0ab"><div class="ttname"><a href="../../dc/da1/classshaka_1_1MpdBuilder.html#ab364102e01afedd8a4dcc9be4fdcc0ab">shaka::MpdBuilder::MpdBuilder</a></div><div class="ttdeci">MpdBuilder(const MpdOptions &mpd_options)</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d11/mpd__builder_8cc_source.html#l00116">mpd_builder.cc:116</a></div></div>
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<div class="ttc" id="classshaka_1_1MpdBuilder_html_ab6fd968035d1cba5060fe23a107f8bdb"><div class="ttname"><a href="../../dc/da1/classshaka_1_1MpdBuilder.html#ab6fd968035d1cba5060fe23a107f8bdb">shaka::MpdBuilder::AddBaseUrl</a></div><div class="ttdeci">void AddBaseUrl(const std::string &base_url)</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d11/mpd__builder_8cc_source.html#l00121">mpd_builder.cc:121</a></div></div>
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<div class="ttc" id="classshaka_1_1MpdBuilder_html_af7eae5cc11141eed2b5451d969e57db6"><div class="ttname"><a href="../../dc/da1/classshaka_1_1MpdBuilder.html#af7eae5cc11141eed2b5451d969e57db6">shaka::MpdBuilder::ToString</a></div><div class="ttdeci">virtual bool ToString(std::string *output)</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d11/mpd__builder_8cc_source.html#l00139">mpd_builder.cc:139</a></div></div>
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<div class="ttc" id="namespacebase_html"><div class="ttname"><a href="../../d2/dc5/namespacebase.html">base</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d10/muxer__factory_8h_source.html#l00016">muxer_factory.h:16</a></div></div>
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<div class="ttc" id="classshaka_1_1MpdBuilder_html_a247a9c807274d4e707530f24e2d207f9"><div class="ttname"><a href="../../dc/da1/classshaka_1_1MpdBuilder.html#a247a9c807274d4e707530f24e2d207f9">shaka::MpdBuilder::MakePathsRelativeToMpd</a></div><div class="ttdeci">static void MakePathsRelativeToMpd(const std::string &mpd_path, MediaInfo *media_info)</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d11/mpd__builder_8cc_source.html#l00402">mpd_builder.cc:402</a></div></div>
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<div class="ttc" id="structshaka_1_1MpdParams_html_a4a5dafe570fd7e35749ce12d83ca9559"><div class="ttname"><a href="../../df/ddc/structshaka_1_1MpdParams.html#a4a5dafe570fd7e35749ce12d83ca9559">shaka::MpdParams::minimum_update_period</a></div><div class="ttdeci">double minimum_update_period</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d07/mpd__params_8h_source.html#l00030">mpd_params.h:30</a></div></div>
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<div class="ttc" id="structshaka_1_1MpdOptions_html"><div class="ttname"><a href="../../d1/df3/structshaka_1_1MpdOptions.html">shaka::MpdOptions</a></div><div class="ttdoc">Defines Mpd Options. </div><div class="ttdef"><b>Definition:</b> <a href="../../db/d60/mpd__options_8h_source.html#l00025">mpd_options.h:25</a></div></div>
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<div class="ttc" id="classshaka_1_1xml_1_1XmlNode_html_a73d758186470e7dbcb4f4339eb53458c"><div class="ttname"><a href="../../d1/d31/classshaka_1_1xml_1_1XmlNode.html#a73d758186470e7dbcb4f4339eb53458c">shaka::xml::XmlNode::SetContent</a></div><div class="ttdeci">void SetContent(const std::string &content)</div><div class="ttdef"><b>Definition:</b> <a href="../../df/d96/xml__node_8cc_source.html#l00164">xml_node.cc:164</a></div></div>
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<div class="ttc" id="structshaka_1_1MpdParams_html_a95e4824708c8de4b882b86772f680032"><div class="ttname"><a href="../../df/ddc/structshaka_1_1MpdParams.html#a95e4824708c8de4b882b86772f680032">shaka::MpdParams::time_shift_buffer_depth</a></div><div class="ttdeci">double time_shift_buffer_depth</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d07/mpd__params_8h_source.html#l00039">mpd_params.h:39</a></div></div>
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<div class="ttc" id="classshaka_1_1Period_html"><div class="ttname"><a href="../../d8/de1/classshaka_1_1Period.html">shaka::Period</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d20/period_8h_source.html#l00030">period.h:30</a></div></div>
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