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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_f99dae54fe7170f791f339b952d5067a.html">media</a></li><li class="navelem"><a class="el" href="../../dir_375ba2cfd8fd5b05c50b92d996b9d386.html">formats</a></li><li class="navelem"><a class="el" href="../../dir_ae142483ff91a68c468a97c037f98d4d.html">mp4</a></li> </ul>
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<div class="title">fragmenter.h</div> </div>
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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">#ifndef PACKAGER_MEDIA_FORMATS_MP4_FRAGMENTER_H_</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#define PACKAGER_MEDIA_FORMATS_MP4_FRAGMENTER_H_</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> </div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/base/logging.h"</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "packager/status.h"</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">namespace </span><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span>media {</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">class </span>BufferWriter;</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">class </span>MediaSample;</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">class </span>StreamInfo;</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span>mp4 {</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> <span class="keyword">struct </span>KeyFrameInfo;</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">struct </span>SegmentReference;</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">struct </span>TrackFragment;</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html"> 31</a></span> <span class="keyword">class </span><a class="code" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html">Fragmenter</a> {</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <a class="code" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#af4fc5984b941644f381122cffdd2c998">Fragmenter</a>(std::shared_ptr<const StreamInfo> info,</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="../../df/d7b/structshaka_1_1media_1_1mp4_1_1TrackFragment.html">TrackFragment</a>* traf,</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  int64_t edit_list_offset);</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>  ~<a class="code" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html">Fragmenter</a>();</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> <a class="code" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a993d83a58a8407d46279b3490723c5ca">AddSample</a>(<span class="keyword">const</span> <a class="code" href="../../d7/d6d/classshaka_1_1media_1_1MediaSample.html">MediaSample</a>& sample);</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> <a class="code" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#aa702c2af5ea5096d94f2943076a21e4a">InitializeFragment</a>(int64_t first_sample_dts);</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> <a class="code" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#ae943e13eb86d54cffb7174d4513e4541">FinalizeFragment</a>();</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordtype">void</span> <a class="code" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#abbce724853d98b2ae1f92b504a24ce54">GenerateSegmentReference</a>(<a class="code" href="../../dd/d9b/structshaka_1_1media_1_1mp4_1_1SegmentReference.html">SegmentReference</a>* reference) <span class="keyword">const</span>;</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordtype">void</span> ClearFragmentFinalized() { fragment_finalized_ = <span class="keyword">false</span>; }</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  uint64_t fragment_duration()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> fragment_duration_; }</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  uint64_t first_sap_time()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> first_sap_time_; }</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  uint64_t earliest_presentation_time()<span class="keyword"> const </span>{</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> earliest_presentation_time_;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">bool</span> fragment_initialized()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> fragment_initialized_; }</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">bool</span> fragment_finalized()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> fragment_finalized_; }</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <a class="code" href="../../dc/d41/classshaka_1_1media_1_1BufferWriter.html">BufferWriter</a>* data() { <span class="keywordflow">return</span> data_.get(); }</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">const</span> std::vector<KeyFrameInfo>& key_frame_infos()<span class="keyword"> const </span>{</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">return</span> key_frame_infos_;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="../../df/d7b/structshaka_1_1media_1_1mp4_1_1TrackFragment.html">TrackFragment</a>* traf() { <span class="keywordflow">return</span> traf_; }</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordtype">bool</span> <a class="code" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a208b7b8dd83e73c4206469695a3216d4">OptimizeSampleEntries</a>(std::vector<T>* entries, T* default_value);</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">private</span>:</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="../../d2/d20/classshaka_1_1Status.html">Status</a> FinalizeFragmentForEncryption();</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// Check if the current fragment starts with SAP.</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordtype">bool</span> StartsWithSAP() <span class="keyword">const</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>  std::shared_ptr<const StreamInfo> stream_info_;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <a class="code" href="../../df/d7b/structshaka_1_1media_1_1mp4_1_1TrackFragment.html">TrackFragment</a>* traf_ = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  int64_t edit_list_offset_ = 0;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  int64_t seek_preroll_ = 0;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordtype">bool</span> fragment_initialized_ = <span class="keyword">false</span>;</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">bool</span> fragment_finalized_ = <span class="keyword">false</span>;</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  int64_t fragment_duration_ = 0;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  int64_t earliest_presentation_time_ = 0;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  int64_t first_sap_time_ = 0;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  std::unique_ptr<BufferWriter> data_;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="comment">// Saves key frames information, for Video.</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  std::vector<KeyFrameInfo> key_frame_infos_;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html">Fragmenter</a>);</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> };</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div><div class="line"><a name="l00105"></a><span class="lineno"><a class="line" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a208b7b8dd83e73c4206469695a3216d4"> 105</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a208b7b8dd83e73c4206469695a3216d4">Fragmenter::OptimizeSampleEntries</a>(std::vector<T>* entries,</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  T* default_value) {</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  DCHECK(entries);</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  DCHECK(default_value);</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  DCHECK(!entries->empty());</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keyword">typename</span> std::vector<T>::const_iterator it = entries->begin();</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  T value = *it;</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">for</span> (; it < entries->end(); ++it)</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">if</span> (value != *it)</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="comment">// Clear |entries| if it contains only one value.</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  entries->clear();</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  *default_value = value;</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</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="comment">// namespace mp4</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> } <span class="comment">// namespace media</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> } <span class="comment">// namespace shaka</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="preprocessor">#endif // PACKAGER_MEDIA_FORMATS_MP4_FRAGMENTER_H_</span></div><div class="ttc" id="structshaka_1_1media_1_1mp4_1_1SegmentReference_html"><div class="ttname"><a href="../../dd/d9b/structshaka_1_1media_1_1mp4_1_1SegmentReference.html">shaka::media::mp4::SegmentReference</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d7b/box__definitions_8h_source.html#l00753">box_definitions.h:753</a></div></div>
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<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1TrackFragment_html"><div class="ttname"><a href="../../df/d7b/structshaka_1_1media_1_1mp4_1_1TrackFragment.html">shaka::media::mp4::TrackFragment</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d7b/box__definitions_8h_source.html#l00731">box_definitions.h:731</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_1media_1_1mp4_1_1Fragmenter_html_aa702c2af5ea5096d94f2943076a21e4a"><div class="ttname"><a href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#aa702c2af5ea5096d94f2943076a21e4a">shaka::media::mp4::Fragmenter::InitializeFragment</a></div><div class="ttdeci">Status InitializeFragment(int64_t first_sample_dts)</div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d9a/fragmenter_8cc_source.html#l00129">fragmenter.cc:129</a></div></div>
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<div class="ttc" id="classshaka_1_1Status_html"><div class="ttname"><a href="../../d2/d20/classshaka_1_1Status.html">shaka::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00110">status.h:110</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1Fragmenter_html_abbce724853d98b2ae1f92b504a24ce54"><div class="ttname"><a href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#abbce724853d98b2ae1f92b504a24ce54">shaka::media::mp4::Fragmenter::GenerateSegmentReference</a></div><div class="ttdeci">void GenerateSegmentReference(SegmentReference *reference) const</div><div class="ttdoc">Fill reference with current fragment information. </div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d9a/fragmenter_8cc_source.html#l00224">fragmenter.cc:224</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1BufferWriter_html"><div class="ttname"><a href="../../dc/d41/classshaka_1_1media_1_1BufferWriter.html">shaka::media::BufferWriter</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dd2/buffer__writer_8h_source.html#l00023">buffer_writer.h:23</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1Fragmenter_html_a993d83a58a8407d46279b3490723c5ca"><div class="ttname"><a href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a993d83a58a8407d46279b3490723c5ca">shaka::media::mp4::Fragmenter::AddSample</a></div><div class="ttdeci">Status AddSample(const MediaSample &sample)</div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d9a/fragmenter_8cc_source.html#l00065">fragmenter.cc:65</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1Fragmenter_html"><div class="ttname"><a href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html">shaka::media::mp4::Fragmenter</a></div><div class="ttdef"><b>Definition:</b> <a href="../../da/dd1/fragmenter_8h_source.html#l00031">fragmenter.h:31</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1Fragmenter_html_af4fc5984b941644f381122cffdd2c998"><div class="ttname"><a href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#af4fc5984b941644f381122cffdd2c998">shaka::media::mp4::Fragmenter::Fragmenter</a></div><div class="ttdeci">Fragmenter(std::shared_ptr< const StreamInfo > info, TrackFragment *traf, int64_t edit_list_offset)</div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d9a/fragmenter_8cc_source.html#l00050">fragmenter.cc:50</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1MediaSample_html"><div class="ttname"><a href="../../d7/d6d/classshaka_1_1media_1_1MediaSample.html">shaka::media::MediaSample</a></div><div class="ttdoc">Class to hold a media sample. </div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d80/media__sample_8h_source.html#l00022">media_sample.h:22</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1Fragmenter_html_ae943e13eb86d54cffb7174d4513e4541"><div class="ttname"><a href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#ae943e13eb86d54cffb7174d4513e4541">shaka::media::mp4::Fragmenter::FinalizeFragment</a></div><div class="ttdeci">Status FinalizeFragment()</div><div class="ttdoc">Finalize and optimize the fragment. </div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d9a/fragmenter_8cc_source.html#l00159">fragmenter.cc:159</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1Fragmenter_html_a208b7b8dd83e73c4206469695a3216d4"><div class="ttname"><a href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html#a208b7b8dd83e73c4206469695a3216d4">shaka::media::mp4::Fragmenter::OptimizeSampleEntries</a></div><div class="ttdeci">bool OptimizeSampleEntries(std::vector< T > *entries, T *default_value)</div><div class="ttdef"><b>Definition:</b> <a href="../../da/dd1/fragmenter_8h_source.html#l00105">fragmenter.h:105</a></div></div>
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