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<div class="title">key_rotation_fragmenter.cc</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">#include "packager/media/formats/mp4/key_rotation_fragmenter.h"</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include "packager/media/base/aes_encryptor.h"</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/box_definitions.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>shaka {</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> <span class="keyword">namespace </span>mp4 {</div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">namespace </span>{</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> kInitialEncryptionInfo = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> } <span class="comment">// namespace</span></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="l00020"></a><span class="lineno"><a class="line" href="../../d2/d29/classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter.html#ad0d22ca7f2d0a3d9d9158242394f235c"> 20</a></span> <a class="code" href="../../d2/d29/classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter.html#ad0d22ca7f2d0a3d9d9158242394f235c">KeyRotationFragmenter::KeyRotationFragmenter</a>(<a class="code" href="../../d9/d1f/structshaka_1_1media_1_1mp4_1_1MovieFragment.html">MovieFragment</a>* moof,</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  scoped_refptr<StreamInfo> info,</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</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="l00023"></a><span class="lineno"> 23</span>  <a class="code" href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html">KeySource</a>* encryption_key_source,</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  KeySource::TrackType track_type,</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  int64_t crypto_period_duration,</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  int64_t clear_time,</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  FourCC protection_scheme,</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  uint8_t crypt_byte_block,</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  uint8_t skip_byte_block,</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <a class="code" href="../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html">MuxerListener</a>* muxer_listener)</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  : <a class="code" href="../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html">EncryptingFragmenter</a>(info,</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  traf,</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  std::unique_ptr<<a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>>(new <a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>()),</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  clear_time,</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  protection_scheme,</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  crypt_byte_block,</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  skip_byte_block,</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  muxer_listener),</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  moof_(moof),</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  encryption_key_source_(encryption_key_source),</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  track_type_(track_type),</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  crypto_period_duration_(crypto_period_duration),</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  prev_crypto_period_index_(-1),</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  muxer_listener_(muxer_listener) {</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  DCHECK(moof);</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  DCHECK(encryption_key_source);</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> }</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> KeyRotationFragmenter::~KeyRotationFragmenter() {}</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div>
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<div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="../../d2/d29/classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter.html#a3bdb3a237cb8eb1484ee98e195d290a7"> 51</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d2/d29/classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter.html#a3bdb3a237cb8eb1484ee98e195d290a7">KeyRotationFragmenter::PrepareFragmentForEncryption</a>(</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordtype">bool</span> enable_encryption) {</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordtype">bool</span> need_to_refresh_encryptor = !encryptor();</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>  int64_t current_crypto_period_index =</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  traf()->decode_time.decode_time / crypto_period_duration_;</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">if</span> (current_crypto_period_index != prev_crypto_period_index_) {</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  std::unique_ptr<EncryptionKey> encryption_key(<span class="keyword">new</span> <a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>());</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> status = encryption_key_source_-><a class="code" href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html#a18806b962c858e35ed07753687605b16">GetCryptoPeriodKey</a>(</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  current_crypto_period_index, track_type_, encryption_key.get());</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">if</span> (!status.ok())</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">return</span> status;</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (encryption_key->iv.empty()) {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../df/d87/classshaka_1_1media_1_1AesCryptor.html#a40d9a82d274d6fbaee5346328f11dedd">AesCryptor::GenerateRandomIv</a>(protection_scheme(),</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  &encryption_key->iv)) {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">return</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a>(error::INTERNAL_ERROR, <span class="stringliteral">"Failed to generate random iv."</span>);</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</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>  set_encryption_key(std::move(encryption_key));</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  prev_crypto_period_index_ = current_crypto_period_index;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  need_to_refresh_encryptor = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  DCHECK(encryption_key());</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">const</span> std::vector<ProtectionSystemSpecificInfo>& system_info =</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  encryption_key()->key_system_info;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  moof_->pssh.resize(system_info.size());</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < system_info.size(); i++) {</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  moof_->pssh[i].raw_box = system_info[i].CreateBox();</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> </div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">if</span> (muxer_listener_) {</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  muxer_listener_-><a class="code" href="../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html#ab521acca727bbe01aa15c751325c0001">OnEncryptionInfoReady</a>(</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  !kInitialEncryptionInfo, protection_scheme(), encryption_key()->key_id,</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  encryption_key()->iv, encryption_key()->key_system_info);</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  }</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>  <span class="comment">// Skip the following steps if the current fragment is not going to be</span></div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// encrypted. 'pssh' box needs to be included in the fragment, which is</span></div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="comment">// performed above, regardless of whether the fragment is encrypted. This is</span></div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="comment">// necessary for two reasons: 1) Requesting keys before reaching encrypted</span></div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="comment">// content avoids playback delay due to license requests; 2) In Chrome, CDM</span></div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// must be initialized before starting the playback and CDM can only be</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="comment">// initialized with a valid 'pssh'.</span></div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">if</span> (!enable_encryption) {</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  DCHECK(!encryptor());</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">if</span> (need_to_refresh_encryptor) {</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> status = <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="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">if</span> (!status.ok())</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">return</span> status;</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>  DCHECK(encryptor());</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>  <span class="comment">// Key rotation happens in fragment boundary only in this implementation,</span></div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// i.e. there is at most one key for the fragment. So there should be only</span></div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">// one entry in SampleGroupDescription box and one entry in SampleToGroup box.</span></div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="comment">// Fill in SampleGroupDescription box information.</span></div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  traf()->sample_group_descriptions.resize(</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  traf()->sample_group_descriptions.size() + 1);</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <a class="code" href="../../d7/d01/structshaka_1_1media_1_1mp4_1_1SampleGroupDescription.html">SampleGroupDescription</a>& sample_group_description =</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  traf()->sample_group_descriptions.back();</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  sample_group_description.grouping_type = FOURCC_seig;</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  sample_group_description.cenc_sample_encryption_info_entries.resize(1);</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <a class="code" href="../../d8/dd6/structshaka_1_1media_1_1mp4_1_1CencSampleEncryptionInfoEntry.html">CencSampleEncryptionInfoEntry</a>& sample_group_entry =</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  sample_group_description.cenc_sample_encryption_info_entries.back();</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  sample_group_entry.is_protected = 1;</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordflow">if</span> (protection_scheme() == FOURCC_cbcs) {</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="comment">// For 'cbcs' scheme, Constant IVs SHALL be used.</span></div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  sample_group_entry.per_sample_iv_size = 0;</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  sample_group_entry.constant_iv = encryptor()-><a class="code" href="../../df/d87/classshaka_1_1media_1_1AesCryptor.html#a96dde16f12a82a563c77f6d5522571f3">iv</a>();</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  sample_group_entry.per_sample_iv_size =</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(encryptor()-><a class="code" href="../../df/d87/classshaka_1_1media_1_1AesCryptor.html#a96dde16f12a82a563c77f6d5522571f3">iv</a>().size());</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  }</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  sample_group_entry.crypt_byte_block = crypt_byte_block();</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  sample_group_entry.skip_byte_block = skip_byte_block();</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  sample_group_entry.key_id = encryption_key()->key_id;</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> }</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> } <span class="comment">// namespace mp4</span></div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> } <span class="comment">// namespace shaka</span></div>
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<div class="ttc" id="classshaka_1_1media_1_1MuxerListener_html_ab521acca727bbe01aa15c751325c0001"><div class="ttname"><a href="../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html#ab521acca727bbe01aa15c751325c0001">shaka::media::MuxerListener::OnEncryptionInfoReady</a></div><div class="ttdeci">virtual void OnEncryptionInfoReady(bool is_initial_encryption_info, FourCC protection_scheme, const std::vector< uint8_t > &key_id, const std::vector< uint8_t > &iv, const std::vector< ProtectionSystemSpecificInfo > &key_system_info)=0</div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter_html_ad0d22ca7f2d0a3d9d9158242394f235c"><div class="ttname"><a href="../../d2/d29/classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter.html#ad0d22ca7f2d0a3d9d9158242394f235c">shaka::media::mp4::KeyRotationFragmenter::KeyRotationFragmenter</a></div><div class="ttdeci">KeyRotationFragmenter(MovieFragment *moof, scoped_refptr< StreamInfo > info, TrackFragment *traf, KeySource *encryption_key_source, KeySource::TrackType track_type, int64_t crypto_period_duration, int64_t clear_time, FourCC protection_scheme, uint8_t crypt_byte_block, uint8_t skip_byte_block, MuxerListener *muxer_listener)</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/d15/key__rotation__fragmenter_8cc_source.html#l00020">key_rotation_fragmenter.cc:20</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_1KeySource_html_a18806b962c858e35ed07753687605b16"><div class="ttname"><a href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html#a18806b962c858e35ed07753687605b16">shaka::media::KeySource::GetCryptoPeriodKey</a></div><div class="ttdeci">virtual Status GetCryptoPeriodKey(uint32_t crypto_period_index, TrackType track_type, EncryptionKey *key)=0</div></div>
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<div class="ttc" id="classshaka_1_1media_1_1AesCryptor_html_a96dde16f12a82a563c77f6d5522571f3"><div class="ttname"><a href="../../df/d87/classshaka_1_1media_1_1AesCryptor.html#a96dde16f12a82a563c77f6d5522571f3">shaka::media::AesCryptor::iv</a></div><div class="ttdeci">const std::vector< uint8_t > & iv() const </div><div class="ttdef"><b>Definition:</b> <a href="../../d0/d42/aes__cryptor_8h_source.html#l00081">aes_cryptor.h:81</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#l00019">key_source.h:19</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1AesCryptor_html_a40d9a82d274d6fbaee5346328f11dedd"><div class="ttname"><a href="../../df/d87/classshaka_1_1media_1_1AesCryptor.html#a40d9a82d274d6fbaee5346328f11dedd">shaka::media::AesCryptor::GenerateRandomIv</a></div><div class="ttdeci">static bool GenerateRandomIv(FourCC protection_scheme, std::vector< uint8_t > *iv)</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d55/aes__cryptor_8cc_source.html#l00109">aes_cryptor.cc:109</a></div></div>
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<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1MovieFragment_html"><div class="ttname"><a href="../../d9/d1f/structshaka_1_1media_1_1mp4_1_1MovieFragment.html">shaka::media::mp4::MovieFragment</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d7b/box__definitions_8h_source.html#l00742">box_definitions.h:742</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="structshaka_1_1media_1_1mp4_1_1CencSampleEncryptionInfoEntry_html"><div class="ttname"><a href="../../d8/dd6/structshaka_1_1media_1_1mp4_1_1CencSampleEncryptionInfoEntry.html">shaka::media::mp4::CencSampleEncryptionInfoEntry</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d7b/box__definitions_8h_source.html#l00479">box_definitions.h:479</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="structshaka_1_1media_1_1mp4_1_1SampleGroupDescription_html"><div class="ttname"><a href="../../d7/d01/structshaka_1_1media_1_1mp4_1_1SampleGroupDescription.html">shaka::media::mp4::SampleGroupDescription</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d7b/box__definitions_8h_source.html#l00508">box_definitions.h:508</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1KeySource_html"><div class="ttname"><a href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html">shaka::media::KeySource</a></div><div class="ttdoc">KeySource is responsible for encryption key acquisition. </div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d3f/key__source_8h_source.html#l00030">key_source.h:30</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter_html_a3bdb3a237cb8eb1484ee98e195d290a7"><div class="ttname"><a href="../../d2/d29/classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter.html#a3bdb3a237cb8eb1484ee98e195d290a7">shaka::media::mp4::KeyRotationFragmenter::PrepareFragmentForEncryption</a></div><div class="ttdeci">Status PrepareFragmentForEncryption(bool enable_encryption) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/d15/key__rotation__fragmenter_8cc_source.html#l00051">key_rotation_fragmenter.cc:51</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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