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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2016 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">#include &quot;packager/media/base/fixed_key_source.h&quot;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &lt;algorithm&gt;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &quot;packager/base/logging.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &quot;packager/base/strings/string_number_conversions.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="keyword">namespace </span>shaka {</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="keyword">namespace </span>media {</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;FixedKeySource::~FixedKeySource() {}</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno"><a class="line" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a358b0955ecec61e6ce23611e2772265b"> 18</a></span>&#160;<a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a358b0955ecec61e6ce23611e2772265b">FixedKeySource::FetchKeys</a>(<span class="keyword">const</span> std::vector&lt;uint8_t&gt;&amp; pssh_box) {</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; <span class="comment">// Do nothing for fixed key encryption/decryption.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160; <span class="keywordflow">return</span> Status::OK;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;}</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno"><a class="line" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#aab2d8d84067ae5e778e3c242fec6dcb1"> 23</a></span>&#160;<a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a358b0955ecec61e6ce23611e2772265b">FixedKeySource::FetchKeys</a>(</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; <span class="keyword">const</span> std::vector&lt;std::vector&lt;uint8_t&gt;&gt;&amp; key_ids) {</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; <span class="comment">// Do nothing for fixed key encryption/decryption.</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; <span class="keywordflow">return</span> Status::OK;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;}</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a4dd894ee7e68340771d34bb81dce0ae5"> 29</a></span>&#160;<a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a358b0955ecec61e6ce23611e2772265b">FixedKeySource::FetchKeys</a>(uint32_t asset_id) {</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; <span class="comment">// Do nothing for fixed key encryption/decryption.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; <span class="keywordflow">return</span> Status::OK;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;}</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;</div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a267d1f36d1c015fd5e8c20b93f270d0a"> 34</a></span>&#160;<a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a267d1f36d1c015fd5e8c20b93f270d0a">FixedKeySource::GetKey</a>(TrackType track_type, <a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>* key) {</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; DCHECK(key);</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; DCHECK(encryption_key_);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; *key = *encryption_key_;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keywordflow">return</span> Status::OK;</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="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a58f9eae1ce9148a82f70118879b6c3f1"> 41</a></span>&#160;<a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a267d1f36d1c015fd5e8c20b93f270d0a">FixedKeySource::GetKey</a>(<span class="keyword">const</span> std::vector&lt;uint8_t&gt;&amp; key_id,</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>* key) {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; DCHECK(key);</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; DCHECK(encryption_key_);</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keywordflow">if</span> (key_id != encryption_key_-&gt;key_id) {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">return</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a>(error::NOT_FOUND,</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; std::string(<span class="stringliteral">&quot;Key for key ID &quot;</span>) +</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; base::HexEncode(&amp;key_id[0], key_id.size()) +</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="stringliteral">&quot; was not found.&quot;</span>);</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; }</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; *key = *encryption_key_;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordflow">return</span> Status::OK;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;}</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;</div>
<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#afa9abf3a9104cbcb4711eac65c8a5bdf"> 55</a></span>&#160;<a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#afa9abf3a9104cbcb4711eac65c8a5bdf">FixedKeySource::GetCryptoPeriodKey</a>(uint32_t crypto_period_index,</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; TrackType track_type,</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>* key) {</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="comment">// Create a copy of the key.</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; *key = *encryption_key_;</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">// A naive key rotation algorithm is implemented here by left rotating the</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="comment">// key, key_id and pssh. Note that this implementation is only intended for</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="comment">// testing purpose. The actual key rotation algorithm can be much more</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="comment">// complicated.</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; LOG(WARNING)</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; &lt;&lt; <span class="stringliteral">&quot;This naive key rotation algorithm should not be used in production.&quot;</span>;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; std::rotate(key-&gt;key_id.begin(),</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; key-&gt;key_id.begin() + (crypto_period_index % key-&gt;key_id.size()),</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; key-&gt;key_id.end());</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; std::rotate(key-&gt;key.begin(),</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; key-&gt;key.begin() + (crypto_period_index % key-&gt;key.size()),</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; key-&gt;key.end());</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="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; key-&gt;key_system_info.size(); i++) {</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; std::vector&lt;uint8_t&gt; pssh_data = key-&gt;key_system_info[i].pssh_data();</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordflow">if</span> (!pssh_data.empty()) {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; std::rotate(pssh_data.begin(),</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; pssh_data.begin() + (crypto_period_index % pssh_data.size()),</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; pssh_data.end());</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; key-&gt;key_system_info[i].set_pssh_data(pssh_data);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; }</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; }</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="keywordflow">return</span> Status::OK;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;}</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a9a91ba439d785022a1e2ceeaa9ebe81a"> 87</a></span>&#160;std::unique_ptr&lt;FixedKeySource&gt; <a class="code" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a9a91ba439d785022a1e2ceeaa9ebe81a">FixedKeySource::CreateFromHexStrings</a>(</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keyword">const</span> std::string&amp; key_id_hex,</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="keyword">const</span> std::string&amp; key_hex,</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keyword">const</span> std::string&amp; pssh_boxes_hex,</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="keyword">const</span> std::string&amp; iv_hex) {</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; std::unique_ptr&lt;EncryptionKey&gt; encryption_key(<span class="keyword">new</span> <a class="code" href="../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html">EncryptionKey</a>());</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keywordflow">if</span> (!base::HexStringToBytes(key_id_hex, &amp;encryption_key-&gt;key_id)) {</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Cannot parse key_id_hex &quot;</span> &lt;&lt; key_id_hex;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keywordflow">return</span> std::unique_ptr&lt;FixedKeySource&gt;();</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (encryption_key-&gt;key_id.size() != 16) {</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Invalid key ID size &#39;&quot;</span> &lt;&lt; encryption_key-&gt;key_id.size()</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; &lt;&lt; <span class="stringliteral">&quot;&#39;, must be 16 bytes.&quot;</span>;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordflow">return</span> std::unique_ptr&lt;FixedKeySource&gt;();</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; }</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; <span class="keywordflow">if</span> (!base::HexStringToBytes(key_hex, &amp;encryption_key-&gt;key)) {</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Cannot parse key_hex &quot;</span> &lt;&lt; key_hex;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="keywordflow">return</span> std::unique_ptr&lt;FixedKeySource&gt;();</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; }</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; std::vector&lt;uint8_t&gt; pssh_boxes;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keywordflow">if</span> (!pssh_boxes_hex.empty() &amp;&amp;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; !base::HexStringToBytes(pssh_boxes_hex, &amp;pssh_boxes)) {</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Cannot parse pssh_hex &quot;</span> &lt;&lt; pssh_boxes_hex;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keywordflow">return</span> std::unique_ptr&lt;FixedKeySource&gt;();</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; }</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="keywordflow">if</span> (!iv_hex.empty()) {</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="keywordflow">if</span> (!base::HexStringToBytes(iv_hex, &amp;encryption_key-&gt;iv)) {</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Cannot parse iv_hex &quot;</span> &lt;&lt; iv_hex;</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <span class="keywordflow">return</span> std::unique_ptr&lt;FixedKeySource&gt;();</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; }</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; }</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="../../d0/dd4/classshaka_1_1media_1_1ProtectionSystemSpecificInfo.html#aa984e27d2655a451ea87ff0a4ddd8b79">ProtectionSystemSpecificInfo::ParseBoxes</a>(</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; pssh_boxes.data(), pssh_boxes.size(),</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; &amp;encryption_key-&gt;key_system_info)) {</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;--pssh argument should be full PSSH boxes.&quot;</span>;</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <span class="keywordflow">return</span> std::unique_ptr&lt;FixedKeySource&gt;();</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; }</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <span class="comment">// If there aren&#39;t any PSSH boxes given, create one with the common system ID.</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <span class="keywordflow">if</span> (encryption_key-&gt;key_system_info.size() == 0) {</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <a class="code" href="../../d0/dd4/classshaka_1_1media_1_1ProtectionSystemSpecificInfo.html">ProtectionSystemSpecificInfo</a> info;</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; info.add_key_id(encryption_key-&gt;key_id);</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; info.set_system_id(kCommonSystemId, arraysize(kCommonSystemId));</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; info.set_pssh_box_version(1);</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; encryption_key-&gt;key_system_info.push_back(info);</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; }</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; <span class="keywordflow">return</span> std::unique_ptr&lt;FixedKeySource&gt;(</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; <span class="keyword">new</span> <a class="code" href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html">FixedKeySource</a>(std::move(encryption_key)));</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;}</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;FixedKeySource::FixedKeySource() {}</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;FixedKeySource::FixedKeySource(std::unique_ptr&lt;EncryptionKey&gt; key)</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; : encryption_key_(std::move(key)) {}</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;} <span class="comment">// namespace shaka</span></div>
<div class="ttc" id="classshaka_1_1media_1_1FixedKeySource_html_a358b0955ecec61e6ce23611e2772265b"><div class="ttname"><a href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a358b0955ecec61e6ce23611e2772265b">shaka::media::FixedKeySource::FetchKeys</a></div><div class="ttdeci">Status FetchKeys(const std::vector&lt; uint8_t &gt; &amp;pssh_box) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d6b/fixed__key__source_8cc_source.html#l00018">fixed_key_source.cc:18</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1FixedKeySource_html_a9a91ba439d785022a1e2ceeaa9ebe81a"><div class="ttname"><a href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a9a91ba439d785022a1e2ceeaa9ebe81a">shaka::media::FixedKeySource::CreateFromHexStrings</a></div><div class="ttdeci">static std::unique_ptr&lt; FixedKeySource &gt; CreateFromHexStrings(const std::string &amp;key_id_hex, const std::string &amp;key_hex, const std::string &amp;pssh_boxes_hex, const std::string &amp;iv_hex)</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d6b/fixed__key__source_8cc_source.html#l00087">fixed_key_source.cc:87</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1ProtectionSystemSpecificInfo_html_aa984e27d2655a451ea87ff0a4ddd8b79"><div class="ttname"><a href="../../d0/dd4/classshaka_1_1media_1_1ProtectionSystemSpecificInfo.html#aa984e27d2655a451ea87ff0a4ddd8b79">shaka::media::ProtectionSystemSpecificInfo::ParseBoxes</a></div><div class="ttdeci">static bool ParseBoxes(const uint8_t *data, size_t data_size, std::vector&lt; ProtectionSystemSpecificInfo &gt; *pssh_boxes)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d42/protection__system__specific__info_8cc_source.html#l00025">protection_system_specific_info.cc:25</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1FixedKeySource_html"><div class="ttname"><a href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html">shaka::media::FixedKeySource</a></div><div class="ttdoc">A key source that uses fixed keys for encryption. </div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d72/fixed__key__source_8h_source.html#l00027">fixed_key_source.h:27</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#l00019">key_source.h:19</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1ProtectionSystemSpecificInfo_html"><div class="ttname"><a href="../../d0/dd4/classshaka_1_1media_1_1ProtectionSystemSpecificInfo.html">shaka::media::ProtectionSystemSpecificInfo</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d59/protection__system__specific__info_8h_source.html#l00019">protection_system_specific_info.h:19</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1FixedKeySource_html_a267d1f36d1c015fd5e8c20b93f270d0a"><div class="ttname"><a href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#a267d1f36d1c015fd5e8c20b93f270d0a">shaka::media::FixedKeySource::GetKey</a></div><div class="ttdeci">Status GetKey(TrackType track_type, EncryptionKey *key) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d6b/fixed__key__source_8cc_source.html#l00034">fixed_key_source.cc:34</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#l00085">status.h:85</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1FixedKeySource_html_afa9abf3a9104cbcb4711eac65c8a5bdf"><div class="ttname"><a href="../../d0/dac/classshaka_1_1media_1_1FixedKeySource.html#afa9abf3a9104cbcb4711eac65c8a5bdf">shaka::media::FixedKeySource::GetCryptoPeriodKey</a></div><div class="ttdeci">Status GetCryptoPeriodKey(uint32_t crypto_period_index, TrackType track_type, EncryptionKey *key) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d6b/fixed__key__source_8cc_source.html#l00055">fixed_key_source.cc:55</a></div></div>
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