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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">encrypting_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>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div>
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<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>
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<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>
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<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>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#ifndef MEDIA_FORMATS_MP4_ENCRYPTING_FRAGMENTER_H_</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor"></span><span class="preprocessor">#define MEDIA_FORMATS_MP4_ENCRYPTING_FRAGMENTER_H_</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include "packager/media/formats/mp4/fragmenter.h"</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="keyword">namespace </span>edash_packager {</div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">class </span>AesCtrEncryptor;</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">struct </span>EncryptionKey;</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">namespace </span>mp4 {</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div>
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<div class="line"><a name="l00021"></a><span class="lineno"><a class="line" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html"> 21</a></span> <span class="keyword">class </span><a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html">EncryptingFragmenter</a> : <span class="keyword">public</span> <a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html">Fragmenter</a> {</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae4352e452ece69206073274efd855f44">EncryptingFragmenter</a>(<a class="code" href="../../d4/dd9/structedash__packager_1_1media_1_1mp4_1_1TrackFragment.html">TrackFragment</a>* traf,</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  scoped_ptr<EncryptionKey> encryption_key,</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  int64_t clear_time,</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  uint8_t nalu_length_size);</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  ~<a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html">EncryptingFragmenter</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae8fd13a579fee2167167bcdbb9637dcc">AddSample</a>(scoped_refptr<MediaSample> sample) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3159dcc8d0f02da113715a97d096afef">InitializeFragment</a>(int64_t first_sample_dts) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordtype">void</span> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a7917221a0f5093ad6770926ee0ae0ce2">FinalizeFragment</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">protected</span>:</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">virtual</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3e66313de4ecb51f23fe438758e0153b">PrepareFragmentForEncryption</a>(<span class="keywordtype">bool</span> enable_encryption);</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0184deccbe7e99ea7a685cf0de2f9156">FinalizeFragmentForEncryption</a>();</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5ed5486f22438e20d0d41524a47f4dd3">CreateEncryptor</a>();</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html">EncryptionKey</a>* encryption_key() { <span class="keywordflow">return</span> encryption_key_.get(); }</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html">AesCtrEncryptor</a>* encryptor() { <span class="keywordflow">return</span> encryptor_.get(); }</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordtype">void</span> set_encryption_key(scoped_ptr<EncryptionKey> encryption_key) {</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  encryption_key_ = encryption_key.Pass();</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  }</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordtype">void</span> EncryptBytes(uint8_t* data, uint32_t size);</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> EncryptSample(scoped_refptr<MediaSample> sample);</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// Should we enable subsample encryption?</span></div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">bool</span> IsSubsampleEncryptionRequired() { <span class="keywordflow">return</span> nalu_length_size_ != 0; }</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  scoped_ptr<EncryptionKey> encryption_key_;</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  scoped_ptr<AesCtrEncryptor> encryptor_;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// If this stream contains AVC, subsample encryption specifies that the size</span></div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// and type of NAL units remain unencrypted. This field specifies the size of</span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">// the size field. Can be 1, 2 or 4 bytes.</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">const</span> uint8_t nalu_length_size_;</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  int64_t clear_time_;</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html">EncryptingFragmenter</a>);</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> };</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> } <span class="comment">// namespace mp4</span></div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> } <span class="comment">// namespace edash_packager</span></div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="preprocessor">#endif // MEDIA_FORMATS_MP4_ENCRYPTING_FRAGMENTER_H_</span></div>
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<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#l00029">fragmenter.h:29</a></div></div>
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<div class="ttc" id="structedash__packager_1_1media_1_1EncryptionKey_html"><div class="ttname"><a href="../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html">edash_packager::media::EncryptionKey</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d3f/key__source_8h_source.html#l00018">key_source.h:18</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a5ed5486f22438e20d0d41524a47f4dd3"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5ed5486f22438e20d0d41524a47f4dd3">edash_packager::media::mp4::EncryptingFragmenter::CreateEncryptor</a></div><div class="ttdeci">Status CreateEncryptor()</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00112">encrypting_fragmenter.cc:112</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html">edash_packager::media::mp4::EncryptingFragmenter</a></div><div class="ttdoc">EncryptingFragmenter generates MP4 fragments with sample encrypted. </div><div class="ttdef"><b>Definition:</b> <a href="../../d1/dcb/encrypting__fragmenter_8h_source.html#l00021">encrypting_fragmenter.h:21</a></div></div>
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<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#l00076">status.h:76</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a3159dcc8d0f02da113715a97d096afef"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3159dcc8d0f02da113715a97d096afef">edash_packager::media::mp4::EncryptingFragmenter::InitializeFragment</a></div><div class="ttdeci">Status InitializeFragment(int64_t first_sample_dts) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00054">encrypting_fragmenter.cc:54</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_ae8fd13a579fee2167167bcdbb9637dcc"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae8fd13a579fee2167167bcdbb9637dcc">edash_packager::media::mp4::EncryptingFragmenter::AddSample</a></div><div class="ttdeci">Status AddSample(scoped_refptr< MediaSample > sample) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00039">encrypting_fragmenter.cc:39</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCtrEncryptor_html"><div class="ttname"><a href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html">edash_packager::media::AesCtrEncryptor</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df0/aes__encryptor_8h_source.html#l00025">aes_encryptor.h:25</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a7917221a0f5093ad6770926ee0ae0ce2"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a7917221a0f5093ad6770926ee0ae0ce2">edash_packager::media::mp4::EncryptingFragmenter::FinalizeFragment</a></div><div class="ttdeci">void FinalizeFragment() override</div><div class="ttdoc">Finalize and optimize the fragment. </div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00076">encrypting_fragmenter.cc:76</a></div></div>
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<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#l00521">box_definitions.h:521</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a3e66313de4ecb51f23fe438758e0153b"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3e66313de4ecb51f23fe438758e0153b">edash_packager::media::mp4::EncryptingFragmenter::PrepareFragmentForEncryption</a></div><div class="ttdeci">virtual Status PrepareFragmentForEncryption(bool enable_encryption)</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00087">encrypting_fragmenter.cc:87</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_ae4352e452ece69206073274efd855f44"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae4352e452ece69206073274efd855f44">edash_packager::media::mp4::EncryptingFragmenter::EncryptingFragmenter</a></div><div class="ttdeci">EncryptingFragmenter(TrackFragment *traf, scoped_ptr< EncryptionKey > encryption_key, int64_t clear_time, uint8_t nalu_length_size)</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00025">encrypting_fragmenter.cc:25</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a0184deccbe7e99ea7a685cf0de2f9156"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0184deccbe7e99ea7a685cf0de2f9156">edash_packager::media::mp4::EncryptingFragmenter::FinalizeFragmentForEncryption</a></div><div class="ttdeci">virtual void FinalizeFragmentForEncryption()</div><div class="ttdoc">Finalize current fragment for encryption. </div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00092">encrypting_fragmenter.cc:92</a></div></div>
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</div><!-- fragment --></div><!-- contents -->
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