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<div class="title">key_source.cc</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2014 Google Inc. All rights reserved.</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Use of this source code is governed by a BSD-style</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// license that can be found in the LICENSE file or at</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "packager/media/base/key_source.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/base/strings/string_number_conversions.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/base/aes_encryptor.h"</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "packager/media/base/buffer_writer.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="keyword">namespace </span>{</div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="keyword">const</span> uint8_t kWidevineSystemId[] = {0xed, 0xef, 0x8b, 0xa9, 0x79, 0xd6,</div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  0x4a, 0xce, 0xa3, 0xc8, 0x27, 0xdc,</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  0xd5, 0x1d, 0x21, 0xed};</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// TODO(kqyang): Consider making it configurable.</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kDefaultUUID[] = <span class="stringliteral">"edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"</span>;</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kDefaultSystemName[] = <span class="stringliteral">""</span>;</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> } <span class="comment">// namespace</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">namespace </span>edash_packager {</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span>media {</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> EncryptionKey::EncryptionKey() {}</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> EncryptionKey::~EncryptionKey() {}</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> KeySource::~KeySource() {}</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
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<div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a4020839c22a550bf71d891bf55087e0b"> 30</a></span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a4020839c22a550bf71d891bf55087e0b">KeySource::FetchKeys</a>(<span class="keyword">const</span> std::vector<uint8_t>& content_id,</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">const</span> std::string& policy) {</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="comment">// Do nothing for fixed key encryption/decryption.</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> }</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
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<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#aff319f4d17ed480243469eb8af5fa915"> 36</a></span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a4020839c22a550bf71d891bf55087e0b">KeySource::FetchKeys</a>(<span class="keyword">const</span> std::vector<uint8_t>& pssh_data) {</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="comment">// Do nothing for fixed key encryption/decryption.</span></div>
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||
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">return</span> Status::OK;</div>
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||
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> }</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div>
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||
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<div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a68de1e9682273c2dc9b8db04718d426c"> 41</a></span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a4020839c22a550bf71d891bf55087e0b">KeySource::FetchKeys</a>(uint32_t asset_id) {</div>
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||
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="comment">// Do nothing for fixed key encryption/decryption.</span></div>
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||
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">return</span> Status::OK;</div>
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||
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> }</div>
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||
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
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||
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<div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a49ccfe7a61c36ac9818482a7892915d3"> 46</a></span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a49ccfe7a61c36ac9818482a7892915d3">KeySource::GetKey</a>(TrackType track_type, <a class="code" href="../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html">EncryptionKey</a>* key) {</div>
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||
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  DCHECK(key);</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  DCHECK(encryption_key_);</div>
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||
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  *key = *encryption_key_;</div>
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||
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">return</span> Status::OK;</div>
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||
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> }</div>
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||
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
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||
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<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a2d44267b238a221bb8a7d2bc1bf68ea2"> 53</a></span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a49ccfe7a61c36ac9818482a7892915d3">KeySource::GetKey</a>(<span class="keyword">const</span> std::vector<uint8_t>& key_id,</div>
|
||
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html">EncryptionKey</a>* key) {</div>
|
||
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  DCHECK(key);</div>
|
||
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  DCHECK(encryption_key_);</div>
|
||
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">if</span> (key_id != encryption_key_->key_id) {</div>
|
||
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">return</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a>(error::NOT_FOUND, std::string(<span class="stringliteral">"Key for key ID "</span>) +</div>
|
||
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  base::HexEncode(&key_id[0], key_id.size()) +</div>
|
||
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="stringliteral">" was not found."</span>);</div>
|
||
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div>
|
||
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  *key = *encryption_key_;</div>
|
||
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|
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">return</span> Status::OK;</div>
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||
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> }</div>
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||
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
|
||
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<div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a349381b866a37df15a931980636621ac"> 66</a></span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a349381b866a37df15a931980636621ac">KeySource::GetCryptoPeriodKey</a>(uint32_t crypto_period_index,</div>
|
||
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  TrackType track_type,</div>
|
||
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <a class="code" href="../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html">EncryptionKey</a>* key) {</div>
|
||
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|
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  *key = *encryption_key_;</div>
|
||
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// A naive key rotation algorithm is implemented here by left rotating the</span></div>
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||
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// key, key_id and pssh. Note that this implementation is only intended for</span></div>
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||
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// testing purpose. The actual key rotation algorithm can be much more</span></div>
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||
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">// complicated.</span></div>
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||
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  LOG(WARNING)</div>
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||
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  << <span class="stringliteral">"This naive key rotation algorithm should not be used in production."</span>;</div>
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||
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  std::rotate(key->key_id.begin(),</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  key->key_id.begin() + (crypto_period_index % key->key_id.size()),</div>
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||
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  key->key_id.end());</div>
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||
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  std::rotate(key->key.begin(),</div>
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||
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  key->key.begin() + (crypto_period_index % key->key.size()),</div>
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|
|
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  key->key.end());</div>
|
||
|
|
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> kPsshHeaderSize = 32u;</div>
|
||
|
|
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  std::vector<uint8_t> pssh_data(key->pssh.begin() + kPsshHeaderSize,</div>
|
||
|
|
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  key->pssh.end());</div>
|
||
|
|
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  std::rotate(pssh_data.begin(),</div>
|
||
|
|
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  pssh_data.begin() + (crypto_period_index % pssh_data.size()),</div>
|
||
|
|
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  pssh_data.end());</div>
|
||
|
|
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  key->pssh = <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab5478505cfdb660fa6c680819f17f239">PsshBoxFromPsshData</a>(pssh_data);</div>
|
||
|
|
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">return</span> Status::OK;</div>
|
||
|
|
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> }</div>
|
||
|
|
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
|
||
|
|
<div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#afbb7d084395a1426eb0143ae8357b2fc"> 92</a></span> std::string <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#afbb7d084395a1426eb0143ae8357b2fc">KeySource::UUID</a>() {</div>
|
||
|
|
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">return</span> kDefaultUUID;</div>
|
||
|
|
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> }</div>
|
||
|
|
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
|
||
|
|
<div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#aa73dacef997e7700b8669bb2db5f8f31"> 96</a></span> std::string <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#aa73dacef997e7700b8669bb2db5f8f31">KeySource::SystemName</a>() {</div>
|
||
|
|
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">return</span> kDefaultSystemName;</div>
|
||
|
|
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> }</div>
|
||
|
|
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
|
||
|
|
<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab05172d89513c0d3627502c9cff4535f"> 100</a></span> scoped_ptr<KeySource> <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab05172d89513c0d3627502c9cff4535f">KeySource::CreateFromHexStrings</a>(</div>
|
||
|
|
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">const</span> std::string& key_id_hex,</div>
|
||
|
|
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">const</span> std::string& key_hex,</div>
|
||
|
|
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keyword">const</span> std::string& pssh_data_hex,</div>
|
||
|
|
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keyword">const</span> std::string& iv_hex) {</div>
|
||
|
|
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  scoped_ptr<EncryptionKey> encryption_key(<span class="keyword">new</span> <a class="code" href="../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html">EncryptionKey</a>());</div>
|
||
|
|
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div>
|
||
|
|
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">if</span> (!base::HexStringToBytes(key_id_hex, &encryption_key->key_id)) {</div>
|
||
|
|
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  LOG(ERROR) << <span class="stringliteral">"Cannot parse key_id_hex "</span> << key_id_hex;</div>
|
||
|
|
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">return</span> scoped_ptr<KeySource>();</div>
|
||
|
|
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  }</div>
|
||
|
|
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
|
||
|
|
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">if</span> (!base::HexStringToBytes(key_hex, &encryption_key->key)) {</div>
|
||
|
|
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  LOG(ERROR) << <span class="stringliteral">"Cannot parse key_hex "</span> << key_hex;</div>
|
||
|
|
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span> scoped_ptr<KeySource>();</div>
|
||
|
|
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div>
|
||
|
|
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
|
||
|
|
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  std::vector<uint8_t> pssh_data;</div>
|
||
|
|
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">if</span> (!pssh_data_hex.empty() &&</div>
|
||
|
|
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  !base::HexStringToBytes(pssh_data_hex, &pssh_data)) {</div>
|
||
|
|
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  LOG(ERROR) << <span class="stringliteral">"Cannot parse pssh_hex "</span> << pssh_data_hex;</div>
|
||
|
|
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordflow">return</span> scoped_ptr<KeySource>();</div>
|
||
|
|
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  }</div>
|
||
|
|
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div>
|
||
|
|
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">if</span> (!iv_hex.empty()) {</div>
|
||
|
|
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">if</span> (!base::HexStringToBytes(iv_hex, &encryption_key->iv)) {</div>
|
||
|
|
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  LOG(ERROR) << <span class="stringliteral">"Cannot parse iv_hex "</span> << iv_hex;</div>
|
||
|
|
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">return</span> scoped_ptr<KeySource>();</div>
|
||
|
|
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  }</div>
|
||
|
|
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  }</div>
|
||
|
|
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div>
|
||
|
|
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  encryption_key->pssh = <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab5478505cfdb660fa6c680819f17f239">PsshBoxFromPsshData</a>(pssh_data);</div>
|
||
|
|
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">return</span> scoped_ptr<KeySource>(</div>
|
||
|
|
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">new</span> <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html">KeySource</a>(encryption_key.Pass()));</div>
|
||
|
|
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> }</div>
|
||
|
|
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div>
|
||
|
|
<div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab15ba8121f76e0945d4f10d722da5cc8"> 136</a></span> KeySource::TrackType <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab15ba8121f76e0945d4f10d722da5cc8">KeySource::GetTrackTypeFromString</a>(</div>
|
||
|
|
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keyword">const</span> std::string& track_type_string) {</div>
|
||
|
|
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">if</span> (track_type_string == <span class="stringliteral">"SD"</span>)</div>
|
||
|
|
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">return</span> TRACK_TYPE_SD;</div>
|
||
|
|
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">if</span> (track_type_string == <span class="stringliteral">"HD"</span>)</div>
|
||
|
|
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">return</span> TRACK_TYPE_HD;</div>
|
||
|
|
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">if</span> (track_type_string == <span class="stringliteral">"AUDIO"</span>)</div>
|
||
|
|
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">return</span> TRACK_TYPE_AUDIO;</div>
|
||
|
|
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">if</span> (track_type_string == <span class="stringliteral">"UNSPECIFIED"</span>)</div>
|
||
|
|
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">return</span> TRACK_TYPE_UNSPECIFIED;</div>
|
||
|
|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  LOG(WARNING) << <span class="stringliteral">"Unexpected track type: "</span> << track_type_string;</div>
|
||
|
|
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">return</span> TRACK_TYPE_UNKNOWN;</div>
|
||
|
|
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> }</div>
|
||
|
|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div>
|
||
|
|
<div class="line"><a name="l00150"></a><span class="lineno"><a class="line" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a8bab239dd17b01ed607c483c536d1321"> 150</a></span> std::string <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a8bab239dd17b01ed607c483c536d1321">KeySource::TrackTypeToString</a>(TrackType track_type) {</div>
|
||
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">switch</span> (track_type) {</div>
|
||
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">case</span> TRACK_TYPE_SD:</div>
|
||
|
|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">return</span> <span class="stringliteral">"SD"</span>;</div>
|
||
|
|
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">case</span> TRACK_TYPE_HD:</div>
|
||
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">return</span> <span class="stringliteral">"HD"</span>;</div>
|
||
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">case</span> TRACK_TYPE_AUDIO:</div>
|
||
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">return</span> <span class="stringliteral">"AUDIO"</span>;</div>
|
||
|
|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">default</span>:</div>
|
||
|
|
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  NOTIMPLEMENTED() << <span class="stringliteral">"Unknown track type: "</span> << track_type;</div>
|
||
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">return</span> <span class="stringliteral">"UNKNOWN"</span>;</div>
|
||
|
|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  }</div>
|
||
|
|
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> }</div>
|
||
|
|
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
|
||
|
|
<div class="line"><a name="l00164"></a><span class="lineno"><a class="line" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab5478505cfdb660fa6c680819f17f239"> 164</a></span> std::vector<uint8_t> <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab5478505cfdb660fa6c680819f17f239">KeySource::PsshBoxFromPsshData</a>(</div>
|
||
|
|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keyword">const</span> std::vector<uint8_t>& pssh_data) {</div>
|
||
|
|
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">const</span> uint8_t kPsshFourCC[] = {<span class="charliteral">'p'</span>, <span class="charliteral">'s'</span>, <span class="charliteral">'s'</span>, <span class="charliteral">'h'</span>};</div>
|
||
|
|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">const</span> uint32_t kVersionAndFlags = 0;</div>
|
||
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div>
|
||
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keyword">const</span> uint32_t pssh_data_size = pssh_data.size();</div>
|
||
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keyword">const</span> uint32_t total_size =</div>
|
||
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">sizeof</span>(total_size) + <span class="keyword">sizeof</span>(kPsshFourCC) + <span class="keyword">sizeof</span>(kVersionAndFlags) +</div>
|
||
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keyword">sizeof</span>(kWidevineSystemId) + <span class="keyword">sizeof</span>(pssh_data_size) + pssh_data_size;</div>
|
||
|
|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div>
|
||
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html">BufferWriter</a> writer;</div>
|
||
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  writer.<a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115">AppendInt</a>(total_size);</div>
|
||
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  writer.AppendArray(kPsshFourCC, <span class="keyword">sizeof</span>(kPsshFourCC));</div>
|
||
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  writer.<a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115">AppendInt</a>(kVersionAndFlags);</div>
|
||
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  writer.AppendArray(kWidevineSystemId, <span class="keyword">sizeof</span>(kWidevineSystemId));</div>
|
||
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  writer.<a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115">AppendInt</a>(pssh_data_size);</div>
|
||
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  writer.AppendVector(pssh_data);</div>
|
||
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">return</span> std::vector<uint8_t>(writer.<a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#a8849c495e9e5cb0c33d7633fecbe0643">Buffer</a>(), writer.<a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#a8849c495e9e5cb0c33d7633fecbe0643">Buffer</a>() + writer.Size());</div>
|
||
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> }</div>
|
||
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div>
|
||
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> KeySource::KeySource() {}</div>
|
||
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> KeySource::KeySource(scoped_ptr<EncryptionKey> encryption_key)</div>
|
||
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  : encryption_key_(encryption_key.Pass()) {</div>
|
||
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  DCHECK(encryption_key_);</div>
|
||
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> }</div>
|
||
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div>
|
||
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> } <span class="comment">// namespace media</span></div>
|
||
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> } <span class="comment">// namespace edash_packager</span></div>
|
||
|
|
<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html_a49ccfe7a61c36ac9818482a7892915d3"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a49ccfe7a61c36ac9818482a7892915d3">edash_packager::media::KeySource::GetKey</a></div><div class="ttdeci">virtual Status GetKey(TrackType track_type, EncryptionKey *key)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/dd6/key__source_8cc_source.html#l00046">key_source.cc:46</a></div></div>
|
||
|
|
<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html_a349381b866a37df15a931980636621ac"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a349381b866a37df15a931980636621ac">edash_packager::media::KeySource::GetCryptoPeriodKey</a></div><div class="ttdeci">virtual Status GetCryptoPeriodKey(uint32_t crypto_period_index, TrackType track_type, EncryptionKey *key)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/dd6/key__source_8cc_source.html#l00066">key_source.cc:66</a></div></div>
|
||
|
|
<div class="ttc" id="structedash__packager_1_1media_1_1EncryptionKey_html"><div class="ttname"><a href="../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html">edash_packager::media::EncryptionKey</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d3f/key__source_8h_source.html#l00018">key_source.h:18</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1Status_html"><div class="ttname"><a href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">edash_packager::media::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00076">status.h:76</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html_a4020839c22a550bf71d891bf55087e0b"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a4020839c22a550bf71d891bf55087e0b">edash_packager::media::KeySource::FetchKeys</a></div><div class="ttdeci">virtual Status FetchKeys(const std::vector< uint8_t > &content_id, const std::string &policy)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/dd6/key__source_8cc_source.html#l00030">key_source.cc:30</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html_afbb7d084395a1426eb0143ae8357b2fc"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#afbb7d084395a1426eb0143ae8357b2fc">edash_packager::media::KeySource::UUID</a></div><div class="ttdeci">virtual std::string UUID()</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/dd6/key__source_8cc_source.html#l00092">key_source.cc:92</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html">edash_packager::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#l00029">key_source.h:29</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1BufferWriter_html_afd1449487750c41331a2d91ac417f115"><div class="ttname"><a href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115">edash_packager::media::BufferWriter::AppendInt</a></div><div class="ttdeci">void AppendInt(uint8_t v)</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dd3/buffer__writer_8cc_source.html#l00024">buffer_writer.cc:24</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html_ab05172d89513c0d3627502c9cff4535f"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab05172d89513c0d3627502c9cff4535f">edash_packager::media::KeySource::CreateFromHexStrings</a></div><div class="ttdeci">static scoped_ptr< KeySource > CreateFromHexStrings(const std::string &key_id_hex, const std::string &key_hex, const std::string &pssh_data_hex, const std::string &iv_hex)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/dd6/key__source_8cc_source.html#l00100">key_source.cc:100</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1BufferWriter_html_a8849c495e9e5cb0c33d7633fecbe0643"><div class="ttname"><a href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#a8849c495e9e5cb0c33d7633fecbe0643">edash_packager::media::BufferWriter::Buffer</a></div><div class="ttdeci">const uint8_t * Buffer() const </div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dd2/buffer__writer_8h_source.html#l00059">buffer_writer.h:59</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html_ab5478505cfdb660fa6c680819f17f239"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab5478505cfdb660fa6c680819f17f239">edash_packager::media::KeySource::PsshBoxFromPsshData</a></div><div class="ttdeci">static std::vector< uint8_t > PsshBoxFromPsshData(const std::vector< uint8_t > &pssh_data)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/dd6/key__source_8cc_source.html#l00164">key_source.cc:164</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html_aa73dacef997e7700b8669bb2db5f8f31"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#aa73dacef997e7700b8669bb2db5f8f31">edash_packager::media::KeySource::SystemName</a></div><div class="ttdeci">virtual std::string SystemName()</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/dd6/key__source_8cc_source.html#l00096">key_source.cc:96</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html_ab15ba8121f76e0945d4f10d722da5cc8"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab15ba8121f76e0945d4f10d722da5cc8">edash_packager::media::KeySource::GetTrackTypeFromString</a></div><div class="ttdeci">static TrackType GetTrackTypeFromString(const std::string &track_type_string)</div><div class="ttdoc">Convert string representation of track type to enum representation. </div><div class="ttdef"><b>Definition:</b> <a href="../../d7/dd6/key__source_8cc_source.html#l00136">key_source.cc:136</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html_a8bab239dd17b01ed607c483c536d1321"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a8bab239dd17b01ed607c483c536d1321">edash_packager::media::KeySource::TrackTypeToString</a></div><div class="ttdeci">static std::string TrackTypeToString(TrackType track_type)</div><div class="ttdoc">Convert TrackType to string. </div><div class="ttdef"><b>Definition:</b> <a href="../../d7/dd6/key__source_8cc_source.html#l00150">key_source.cc:150</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1BufferWriter_html"><div class="ttname"><a href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html">edash_packager::media::BufferWriter</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dd2/buffer__writer_8h_source.html#l00022">buffer_writer.h:22</a></div></div>
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