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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2017 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 PACKAGER_MEDIA_CRYPTO_ENCRYPTION_HANDLER_H_</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define PACKAGER_MEDIA_CRYPTO_ENCRYPTION_HANDLER_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 &quot;packager/media/base/key_source.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/media_handler.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;packager/packager.h&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="keyword">namespace </span>shaka {</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="keyword">namespace </span>media {</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">class </span>AesCryptor;</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="keyword">class </span>VideoSliceHeaderParser;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="keyword">class </span>VPxParser;</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="keyword">struct </span>EncryptionKey;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="keyword">struct </span>VPxFrameInfo;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html"> 24</a></span>&#160;<span class="keyword">struct </span><a class="code" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html">EncryptionOptions</a> {</div>
<div class="line"><a name="l00026"></a><span class="lineno"><a class="line" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#a3d58dc01a4af0ebfb56f3c4979f745f7"> 26</a></span>&#160; <span class="keywordtype">double</span> <a class="code" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#a3d58dc01a4af0ebfb56f3c4979f745f7">clear_lead_in_seconds</a> = 0;</div>
<div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#ac858b4c03e49e871e07e38fc35893088"> 28</a></span>&#160; FourCC <a class="code" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#ac858b4c03e49e871e07e38fc35893088">protection_scheme</a> = FOURCC_cenc;</div>
<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#a20acea0141ca7c8dd57d0129c53a6d13"> 31</a></span>&#160; <span class="keywordtype">double</span> <a class="code" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#a20acea0141ca7c8dd57d0129c53a6d13">crypto_period_duration_in_seconds</a> = 0;</div>
<div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#a2f971f63a7525a777d5578d87ef0c99f"> 33</a></span>&#160; <span class="keywordtype">bool</span> <a class="code" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#a2f971f63a7525a777d5578d87ef0c99f">vp9_subsample_encryption</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; std::function&lt;std::string(</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="keyword">const</span> EncryptionParams::EncryptedStreamAttributes&amp; stream_attributes)&gt;</div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#a586017f7bf6490e06a61c1f6eaf7970c"> 38</a></span>&#160; <a class="code" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#a586017f7bf6490e06a61c1f6eaf7970c">stream_label_func</a>;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;};</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;</div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html"> 41</a></span>&#160;<span class="keyword">class </span><a class="code" href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html">EncryptionHandler</a> : <span class="keyword">public</span> <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html">MediaHandler</a> {</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <a class="code" href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html">EncryptionHandler</a>(<span class="keyword">const</span> <a class="code" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html">EncryptionOptions</a>&amp; encryption_options,</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <a class="code" href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html">KeySource</a>* key_source);</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; ~<a class="code" href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html">EncryptionHandler</a>() <span class="keyword">override</span>;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html#a3f1808a4386081e5e1c9a798a1a69dd0">InitializeInternal</a>() <span class="keyword">override</span>;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html#a7887e6060eb572036674ecb9a7e045c4">Process</a>(std::unique_ptr&lt;StreamData&gt; stream_data) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="keyword">friend</span> <span class="keyword">class </span>EncryptionHandlerTest;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <a class="code" href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html">EncryptionHandler</a>(<span class="keyword">const</span> <a class="code" href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html">EncryptionHandler</a>&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <a class="code" href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html">EncryptionHandler</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html">EncryptionHandler</a>&amp;) = <span class="keyword">delete</span>;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="comment">// Processes |stream_info| and sets up stream specific variables.</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> ProcessStreamInfo(<a class="code" href="../../d5/db1/classshaka_1_1media_1_1StreamInfo.html">StreamInfo</a>* stream_info);</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="comment">// Processes media sample and encrypts it if needed.</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> ProcessMediaSample(<a class="code" href="../../d7/d6d/classshaka_1_1media_1_1MediaSample.html">MediaSample</a>* sample);</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> SetupProtectionPattern(StreamType stream_type);</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keywordtype">bool</span> CreateEncryptor(<span class="keyword">const</span> <a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>&amp; encryption_key);</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordtype">bool</span> EncryptVpxFrame(<span class="keyword">const</span> std::vector&lt;VPxFrameInfo&gt;&amp; vpx_frames,</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <a class="code" href="../../d7/d6d/classshaka_1_1media_1_1MediaSample.html">MediaSample</a>* sample,</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <a class="code" href="../../de/d49/classshaka_1_1media_1_1DecryptConfig.html">DecryptConfig</a>* decrypt_config);</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keywordtype">bool</span> EncryptNalFrame(<a class="code" href="../../d7/d6d/classshaka_1_1media_1_1MediaSample.html">MediaSample</a>* sample, <a class="code" href="../../de/d49/classshaka_1_1media_1_1DecryptConfig.html">DecryptConfig</a>* decrypt_config);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="keywordtype">void</span> EncryptBytes(uint8_t* data, <span class="keywordtype">size_t</span> size);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="comment">// Testing injections.</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <span class="keywordtype">void</span> InjectVpxParserForTesting(std::unique_ptr&lt;VPxParser&gt; vpx_parser);</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordtype">void</span> InjectVideoSliceHeaderParserForTesting(</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; std::unique_ptr&lt;VideoSliceHeaderParser&gt; header_parser);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html">EncryptionOptions</a> encryption_options_;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <a class="code" href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html">KeySource</a>* key_source_ = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; std::string stream_label_;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="comment">// Current encryption config and encryptor.</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; std::shared_ptr&lt;EncryptionConfig&gt; encryption_config_;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; std::unique_ptr&lt;AesCryptor&gt; encryptor_;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; Codec codec_ = kUnknownCodec;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="comment">// Specifies the size of NAL unit length in bytes. Can be 1, 2 or 4 bytes. 0</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="comment">// if it is not a NAL structured video.</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; uint8_t nalu_length_size_ = 0;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="comment">// For Sample AES, 32 bytes for Video and 16 bytes for audio.</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordtype">size_t</span> leading_clear_bytes_size_ = 0;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="comment">// For Sample AES, 48+1 bytes for video NAL and 16+1 bytes for audio.</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keywordtype">size_t</span> min_protected_data_size_ = 0;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="comment">// Remaining clear lead in the stream&#39;s time scale.</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; int64_t remaining_clear_lead_ = 0;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="comment">// Crypto period duration in the stream&#39;s time scale.</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; uint64_t crypto_period_duration_ = 0;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="comment">// Previous crypto period index if key rotation is enabled.</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; int64_t prev_crypto_period_index_ = -1;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keywordtype">bool</span> check_new_crypto_period_ = <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">// Number of encrypted blocks (16-byte-block) in pattern based encryption.</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; uint8_t crypt_byte_block_ = 0;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; uint8_t skip_byte_block_ = 0;</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; <span class="comment">// VPx parser for VPx streams.</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; std::unique_ptr&lt;VPxParser&gt; vpx_parser_;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <span class="comment">// Video slice header parser for NAL strucutred streams.</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; std::unique_ptr&lt;VideoSliceHeaderParser&gt; header_parser_;</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;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;} <span class="comment">// namespace shaka</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<span class="preprocessor">#endif // PACKAGER_MEDIA_CRYPTO_ENCRYPTION_HANDLER_H_</span></div>
<div class="ttc" id="structshaka_1_1media_1_1EncryptionOptions_html_a586017f7bf6490e06a61c1f6eaf7970c"><div class="ttname"><a href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#a586017f7bf6490e06a61c1f6eaf7970c">shaka::media::EncryptionOptions::stream_label_func</a></div><div class="ttdeci">std::function&lt; std::string(const EncryptionParams::EncryptedStreamAttributes &amp;stream_attributes)&gt; stream_label_func</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dbc/encryption__handler_8h_source.html#l00038">encryption_handler.h:38</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1StreamInfo_html"><div class="ttname"><a href="../../d5/db1/classshaka_1_1media_1_1StreamInfo.html">shaka::media::StreamInfo</a></div><div class="ttdoc">Abstract class holds stream information. </div><div class="ttdef"><b>Definition:</b> <a href="../../d8/daa/stream__info_8h_source.html#l00057">stream_info.h:57</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1EncryptionOptions_html_a2f971f63a7525a777d5578d87ef0c99f"><div class="ttname"><a href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#a2f971f63a7525a777d5578d87ef0c99f">shaka::media::EncryptionOptions::vp9_subsample_encryption</a></div><div class="ttdeci">bool vp9_subsample_encryption</div><div class="ttdoc">Enable/disable subsample encryption for VP9. </div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dbc/encryption__handler_8h_source.html#l00033">encryption_handler.h:33</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1DecryptConfig_html"><div class="ttname"><a href="../../de/d49/classshaka_1_1media_1_1DecryptConfig.html">shaka::media::DecryptConfig</a></div><div class="ttdef"><b>Definition:</b> <a href="../../df/dad/decrypt__config_8h_source.html#l00040">decrypt_config.h:40</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1EncryptionHandler_html"><div class="ttname"><a href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html">shaka::media::EncryptionHandler</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dbc/encryption__handler_8h_source.html#l00041">encryption_handler.h:41</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html">shaka::media::MediaHandler</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d93/media__handler_8h_source.html#l00074">media_handler.h:74</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1EncryptionOptions_html_a20acea0141ca7c8dd57d0129c53a6d13"><div class="ttname"><a href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#a20acea0141ca7c8dd57d0129c53a6d13">shaka::media::EncryptionOptions::crypto_period_duration_in_seconds</a></div><div class="ttdeci">double crypto_period_duration_in_seconds</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dbc/encryption__handler_8h_source.html#l00031">encryption_handler.h:31</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1EncryptionHandler_html_a3f1808a4386081e5e1c9a798a1a69dd0"><div class="ttname"><a href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html#a3f1808a4386081e5e1c9a798a1a69dd0">shaka::media::EncryptionHandler::InitializeInternal</a></div><div class="ttdeci">Status InitializeInternal() override</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d9c/encryption__handler_8cc_source.html#l00087">encryption_handler.cc:87</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1EncryptionHandler_html_a7887e6060eb572036674ecb9a7e045c4"><div class="ttname"><a href="../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html#a7887e6060eb572036674ecb9a7e045c4">shaka::media::EncryptionHandler::Process</a></div><div class="ttdeci">Status Process(std::unique_ptr&lt; StreamData &gt; stream_data) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d9c/encryption__handler_8cc_source.html#l00098">encryption_handler.cc:98</a></div></div>
<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#l00034">key_source.h:34</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1EncryptionOptions_html"><div class="ttname"><a href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html">shaka::media::EncryptionOptions</a></div><div class="ttdoc">This structure defines encryption options. </div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dbc/encryption__handler_8h_source.html#l00024">encryption_handler.h:24</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1EncryptionOptions_html_a3d58dc01a4af0ebfb56f3c4979f745f7"><div class="ttname"><a href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#a3d58dc01a4af0ebfb56f3c4979f745f7">shaka::media::EncryptionOptions::clear_lead_in_seconds</a></div><div class="ttdeci">double clear_lead_in_seconds</div><div class="ttdoc">Clear lead duration in seconds. </div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dbc/encryption__handler_8h_source.html#l00026">encryption_handler.h:26</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1EncryptionOptions_html_ac858b4c03e49e871e07e38fc35893088"><div class="ttname"><a href="../../d6/d82/structshaka_1_1media_1_1EncryptionOptions.html#ac858b4c03e49e871e07e38fc35893088">shaka::media::EncryptionOptions::protection_scheme</a></div><div class="ttdeci">FourCC protection_scheme</div><div class="ttdoc">The protection scheme: &#39;cenc&#39;, &#39;cens&#39;, &#39;cbc1&#39;, &#39;cbcs&#39;. </div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dbc/encryption__handler_8h_source.html#l00028">encryption_handler.h:28</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1MediaSample_html"><div class="ttname"><a href="../../d7/d6d/classshaka_1_1media_1_1MediaSample.html">shaka::media::MediaSample</a></div><div class="ttdoc">Class to hold a media sample. </div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d80/media__sample_8h_source.html#l00022">media_sample.h:22</a></div></div>
<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#l00088">status.h:88</a></div></div>
<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#l00045">key_source.h:45</a></div></div>
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