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<li class="navelem"><a class="el" href="../../dir_39dc0668bd5a501998f94e8b4e546c71.html">media</a></li><li class="navelem"><a class="el" href="../../dir_65f7acfa8cf3a5f1edc11faa2428b914.html">formats</a></li><li class="navelem"><a class="el" href="../../dir_3e9291fd7a18fdecc763294cb2628910.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>&#160;<span class="comment">// Copyright 2014 Google Inc. All rights reserved.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<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>&#160;<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>&#160;<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>&#160;</div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#ifndef MEDIA_FORMATS_MP4_FRAGMENTER_H_</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define MEDIA_FORMATS_MP4_FRAGMENTER_H_</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;</div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;packager/base/logging.h&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &quot;packager/base/memory/ref_counted.h&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &quot;packager/base/memory/scoped_ptr.h&quot;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/status.h&quot;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="keyword">namespace </span>edash_packager {</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="keyword">namespace </span>media {</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="keyword">class </span>BufferWriter;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="keyword">class </span>MediaSample;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="keyword">namespace </span>mp4 {</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="keyword">struct </span>SegmentReference;</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="keyword">struct </span>TrackFragment;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;</div>
<div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html"> 30</a></span>&#160;<span class="keyword">class </span><a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html">Fragmenter</a> {</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; <a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ae285aba21b3099fe0d5b9e5236583bc8">Fragmenter</a>(<a class="code" href="../../d4/dd9/structedash__packager_1_1media_1_1mp4_1_1TrackFragment.html">TrackFragment</a>* traf);</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="keyword">virtual</span> ~<a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html">Fragmenter</a>();</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keyword">virtual</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a81d8b1f324bdd2bc9cc2e5a469243926">AddSample</a>(scoped_refptr&lt;MediaSample&gt; sample);</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keyword">virtual</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ab55cbcb40b4c1308d70052a4b8ccd6af">InitializeFragment</a>(int64_t first_sample_dts);</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a5f346308fec8fa24cf47cf7ffd21d741">FinalizeFragment</a>();</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordtype">void</span> <a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a04350ab4d9b2b403d8b150512786b7ec">GenerateSegmentReference</a>(<a class="code" href="../../d4/dce/structedash__packager_1_1media_1_1mp4_1_1SegmentReference.html">SegmentReference</a>* reference);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; uint64_t fragment_duration()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> fragment_duration_; }</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; uint64_t first_sap_time()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> first_sap_time_; }</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; uint64_t earliest_presentation_time()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordflow">return</span> earliest_presentation_time_;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; }</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <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="l00060"></a><span class="lineno"> 60</span>&#160; <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="l00061"></a><span class="lineno"> 61</span>&#160; <a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html">BufferWriter</a>* data() { <span class="keywordflow">return</span> data_.get(); }</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <a class="code" href="../../d4/dd9/structedash__packager_1_1media_1_1mp4_1_1TrackFragment.html">TrackFragment</a>* traf() { <span class="keywordflow">return</span> traf_; }</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keywordtype">bool</span> <a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ae51bbd5482783890e9843fd3ca61f2bb">OptimizeSampleEntries</a>(std::vector&lt;T&gt;* entries, T* default_value);</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="comment">// Check if the current fragment starts with SAP.</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keywordtype">bool</span> StartsWithSAP();</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <a class="code" href="../../d4/dd9/structedash__packager_1_1media_1_1mp4_1_1TrackFragment.html">TrackFragment</a>* traf_;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keywordtype">bool</span> fragment_initialized_;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordtype">bool</span> fragment_finalized_;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; uint64_t fragment_duration_;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; int64_t presentation_start_time_;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; int64_t earliest_presentation_time_;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; int64_t first_sap_time_;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; scoped_ptr&lt;BufferWriter&gt; data_;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; DISALLOW_COPY_AND_ASSIGN(<a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html">Fragmenter</a>);</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;};</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ae51bbd5482783890e9843fd3ca61f2bb"> 89</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ae51bbd5482783890e9843fd3ca61f2bb">Fragmenter::OptimizeSampleEntries</a>(std::vector&lt;T&gt;* entries,</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; T* default_value) {</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; DCHECK(entries);</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; DCHECK(default_value);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; DCHECK(!entries-&gt;empty());</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="keyword">typename</span> std::vector&lt;T&gt;::const_iterator it = entries-&gt;begin();</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; T value = *it;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="keywordflow">for</span> (; it &lt; entries-&gt;end(); ++it)</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="keywordflow">if</span> (value != *it)</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="comment">// Clear |entries| if it contains only one value.</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; entries-&gt;clear();</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; *default_value = value;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;}</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;} <span class="comment">// namespace mp4</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;} <span class="comment">// namespace edash_packager</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;<span class="preprocessor">#endif // MEDIA_FORMATS_MP4_FRAGMENTER_H_</span></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html"><div class="ttname"><a href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html">edash_packager::media::mp4::Fragmenter</a></div><div class="ttdef"><b>Definition:</b> <a href="../../da/dd1/fragmenter_8h_source.html#l00030">fragmenter.h:30</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_ae285aba21b3099fe0d5b9e5236583bc8"><div class="ttname"><a href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ae285aba21b3099fe0d5b9e5236583bc8">edash_packager::media::mp4::Fragmenter::Fragmenter</a></div><div class="ttdeci">Fragmenter(TrackFragment *traf)</div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d9a/fragmenter_8cc_source.html#l00023">fragmenter.cc:23</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_a04350ab4d9b2b403d8b150512786b7ec"><div class="ttname"><a href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a04350ab4d9b2b403d8b150512786b7ec">edash_packager::media::mp4::Fragmenter::GenerateSegmentReference</a></div><div class="ttdeci">void GenerateSegmentReference(SegmentReference *reference)</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#l00120">fragmenter.cc:120</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1Status_html"><div class="ttname"><a href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">edash_packager::media::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00075">status.h:75</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_ab55cbcb40b4c1308d70052a4b8ccd6af"><div class="ttname"><a href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ab55cbcb40b4c1308d70052a4b8ccd6af">edash_packager::media::mp4::Fragmenter::InitializeFragment</a></div><div class="ttdeci">virtual Status InitializeFragment(int64_t first_sample_dts)</div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d9a/fragmenter_8cc_source.html#l00076">fragmenter.cc:76</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_a81d8b1f324bdd2bc9cc2e5a469243926"><div class="ttname"><a href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a81d8b1f324bdd2bc9cc2e5a469243926">edash_packager::media::mp4::Fragmenter::AddSample</a></div><div class="ttdeci">virtual Status AddSample(scoped_refptr&lt; MediaSample &gt; sample)</div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d9a/fragmenter_8cc_source.html#l00036">fragmenter.cc:36</a></div></div>
<div class="ttc" id="structedash__packager_1_1media_1_1mp4_1_1SegmentReference_html"><div class="ttname"><a href="../../d4/dce/structedash__packager_1_1media_1_1mp4_1_1SegmentReference.html">edash_packager::media::mp4::SegmentReference</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d7b/box__definitions_8h_source.html#l00697">box_definitions.h:697</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_ae51bbd5482783890e9843fd3ca61f2bb"><div class="ttname"><a href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ae51bbd5482783890e9843fd3ca61f2bb">edash_packager::media::mp4::Fragmenter::OptimizeSampleEntries</a></div><div class="ttdeci">bool OptimizeSampleEntries(std::vector&lt; T &gt; *entries, T *default_value)</div><div class="ttdef"><b>Definition:</b> <a href="../../da/dd1/fragmenter_8h_source.html#l00089">fragmenter.h:89</a></div></div>
<div class="ttc" id="structedash__packager_1_1media_1_1mp4_1_1TrackFragment_html"><div class="ttname"><a href="../../d4/dd9/structedash__packager_1_1media_1_1mp4_1_1TrackFragment.html">edash_packager::media::mp4::TrackFragment</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d7b/box__definitions_8h_source.html#l00675">box_definitions.h:675</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_a5f346308fec8fa24cf47cf7ffd21d741"><div class="ttname"><a href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a5f346308fec8fa24cf47cf7ffd21d741">edash_packager::media::mp4::Fragmenter::FinalizeFragment</a></div><div class="ttdeci">virtual void 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#l00093">fragmenter.cc:93</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1BufferWriter_html"><div class="ttname"><a href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html">edash_packager::media::BufferWriter</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dd2/buffer__writer_8h_source.html#l00022">buffer_writer.h:22</a></div></div>
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