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<div class="title">encrypting_fragmenter.h</div> </div>
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<div class="contents">
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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/base/memory/ref_counted.h"</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "packager/base/memory/scoped_ptr.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/media/base/fourccs.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/media/codecs/video_slice_header_parser.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "packager/media/codecs/vpx_parser.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "packager/media/event/muxer_listener.h"</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "packager/media/formats/mp4/fragmenter.h"</span></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>shaka {</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">class </span>AesCryptor;</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">class </span>StreamInfo;</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">struct </span>EncryptionKey;</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">namespace </span>mp4 {</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
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<div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html"> 28</a></span> <span class="keyword">class </span><a class="code" href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html">EncryptingFragmenter</a> : <span class="keyword">public</span> <a class="code" href="../../db/d95/classshaka_1_1media_1_1mp4_1_1Fragmenter.html">Fragmenter</a> {</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <a class="code" href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5a331edd7e75f6cd15ccbe9c688440a4">EncryptingFragmenter</a>(scoped_refptr<StreamInfo> info,</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="code" href="../../df/d7b/structshaka_1_1media_1_1mp4_1_1TrackFragment.html">TrackFragment</a>* traf,</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  scoped_ptr<EncryptionKey> encryption_key,</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  int64_t clear_time,</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  FourCC protection_scheme,</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  uint8_t crypt_byte_block,</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  uint8_t skip_byte_block,</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html">MuxerListener</a>* listener);</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="l00050"></a><span class="lineno"> 50</span>  ~<a class="code" href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html">EncryptingFragmenter</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#afeb03755fa2e6a53376ae5ceb7440021">AddSample</a>(scoped_refptr<MediaSample> sample) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a126294f104809268975fe04391902ad3">InitializeFragment</a>(int64_t first_sample_dts) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">void</span> <a class="code" href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0de01823838c543cb8f6f8e330712ac2">FinalizeFragment</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">protected</span>:</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">virtual</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ace1882cf57dab24ee8e38765675e69a1">PrepareFragmentForEncryption</a>(<span class="keywordtype">bool</span> enable_encryption);</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5cfbe43af4b1617853cef5fc2243003b">FinalizeFragmentForEncryption</a>();</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="l00069"></a><span class="lineno"> 69</span>  <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a4220479b2dd98b462ff4dd4afcf56d0e">CreateEncryptor</a>();</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">const</span> <a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>* encryption_key()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> encryption_key_.get(); }</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <a class="code" href="../../df/d87/classshaka_1_1media_1_1AesCryptor.html">AesCryptor</a>* encryptor() { <span class="keywordflow">return</span> encryptor_.get(); }</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  FourCC protection_scheme()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> protection_scheme_; }</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  uint8_t crypt_byte_block()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> crypt_byte_block_; }</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  uint8_t skip_byte_block()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> skip_byte_block_; }</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>  <span class="keywordtype">void</span> set_encryption_key(scoped_ptr<EncryptionKey> encryption_key) {</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  encryption_key_ = encryption_key.Pass();</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> </div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordtype">void</span> EncryptBytes(uint8_t* data, uint32_t size);</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> EncryptSample(scoped_refptr<MediaSample> sample);</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// Should we enable subsample encryption?</span></div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordtype">bool</span> IsSubsampleEncryptionRequired();</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  scoped_refptr<StreamInfo> info_;</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  scoped_ptr<EncryptionKey> encryption_key_;</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  scoped_ptr<AesCryptor> encryptor_;</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</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="l00092"></a><span class="lineno"> 92</span>  <span class="comment">// and type of NAL units remain unencrypted. This function returns the size of</span></div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// the size field in bytes. Can be 1, 2 or 4 bytes.</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">const</span> uint8_t nalu_length_size_;</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keyword">const</span> VideoCodec video_codec_;</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  int64_t clear_time_;</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">const</span> FourCC protection_scheme_;</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">const</span> uint8_t crypt_byte_block_;</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">const</span> uint8_t skip_byte_block_;</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <a class="code" href="../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html">MuxerListener</a>* listener_;</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  scoped_ptr<VPxParser> vpx_parser_;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  scoped_ptr<VideoSliceHeaderParser> header_parser_;</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html">EncryptingFragmenter</a>);</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> };</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> } <span class="comment">// namespace mp4</span></div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> } <span class="comment">// namespace shaka</span></div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor">#endif // MEDIA_FORMATS_MP4_ENCRYPTING_FRAGMENTER_H_</span></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_afeb03755fa2e6a53376ae5ceb7440021"><div class="ttname"><a href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#afeb03755fa2e6a53376ae5ceb7440021">shaka::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#l00107">encrypting_fragmenter.cc:107</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1AesCryptor_html"><div class="ttname"><a href="../../df/d87/classshaka_1_1media_1_1AesCryptor.html">shaka::media::AesCryptor</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d0/d42/aes__cryptor_8h_source.html#l00025">aes_cryptor.h:25</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a126294f104809268975fe04391902ad3"><div class="ttname"><a href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a126294f104809268975fe04391902ad3">shaka::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#l00122">encrypting_fragmenter.cc:122</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a5a331edd7e75f6cd15ccbe9c688440a4"><div class="ttname"><a href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5a331edd7e75f6cd15ccbe9c688440a4">shaka::media::mp4::EncryptingFragmenter::EncryptingFragmenter</a></div><div class="ttdeci">EncryptingFragmenter(scoped_refptr< StreamInfo > info, TrackFragment *traf, scoped_ptr< EncryptionKey > encryption_key, int64_t clear_time, FourCC protection_scheme, uint8_t crypt_byte_block, uint8_t skip_byte_block, MuxerListener *listener)</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00062">encrypting_fragmenter.cc:62</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#l00728">box_definitions.h:728</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a0de01823838c543cb8f6f8e330712ac2"><div class="ttname"><a href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0de01823838c543cb8f6f8e330712ac2">shaka::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#l00155">encrypting_fragmenter.cc:155</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a5cfbe43af4b1617853cef5fc2243003b"><div class="ttname"><a href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5cfbe43af4b1617853cef5fc2243003b">shaka::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#l00171">encrypting_fragmenter.cc:171</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="structshaka_1_1media_1_1EncryptionKey_html"><div class="ttname"><a href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">shaka::media::EncryptionKey</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d3f/key__source_8h_source.html#l00020">key_source.h:20</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html"><div class="ttname"><a href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html">shaka::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#l00028">encrypting_fragmenter.h:28</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1Status_html"><div class="ttname"><a href="../../d0/d93/classshaka_1_1media_1_1Status.html">shaka::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>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a4220479b2dd98b462ff4dd4afcf56d0e"><div class="ttname"><a href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a4220479b2dd98b462ff4dd4afcf56d0e">shaka::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#l00208">encrypting_fragmenter.cc:208</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_ace1882cf57dab24ee8e38765675e69a1"><div class="ttname"><a href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ace1882cf57dab24ee8e38765675e69a1">shaka::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#l00166">encrypting_fragmenter.cc:166</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1MuxerListener_html"><div class="ttname"><a href="../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html">shaka::media::MuxerListener</a></div><div class="ttdef"><b>Definition:</b> <a href="../../de/dfa/muxer__listener_8h_source.html#l00030">muxer_listener.h:30</a></div></div>
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