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<div class="title">encrypting_fragmenter.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/formats/mp4/encrypting_fragmenter.h"</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include "packager/media/base/aes_encryptor.h"</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include "packager/media/base/buffer_reader.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/key_source.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/media/base/media_sample.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/media/formats/mp4/box_definitions.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "packager/media/formats/mp4/cenc.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">namespace </span>{</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// Generate 64bit IV by default.</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">size_t</span> kDefaultIvSize = 8u;</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> } <span class="comment">// namespace</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">namespace </span>edash_packager {</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span>mp4 {</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"><a class="line" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae4352e452ece69206073274efd855f44"> 25</a></span> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae4352e452ece69206073274efd855f44">EncryptingFragmenter::EncryptingFragmenter</a>(</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <a class="code" href="../../d4/dd9/structedash__packager_1_1media_1_1mp4_1_1TrackFragment.html">TrackFragment</a>* traf,</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  scoped_ptr<EncryptionKey> encryption_key,</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  int64_t clear_time,</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  uint8_t nalu_length_size)</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  : <a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html">Fragmenter</a>(traf),</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  encryption_key_(encryption_key.Pass()),</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  nalu_length_size_(nalu_length_size),</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  clear_time_(clear_time) {</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  DCHECK(encryption_key_);</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"> 36</span> EncryptingFragmenter::~EncryptingFragmenter() {}</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div>
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<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae8fd13a579fee2167167bcdbb9637dcc"> 39</a></span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae8fd13a579fee2167167bcdbb9637dcc">EncryptingFragmenter::AddSample</a>(scoped_refptr<MediaSample> sample) {</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  DCHECK(sample);</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">if</span> (!fragment_initialized()) {</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> status = <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3159dcc8d0f02da113715a97d096afef">InitializeFragment</a>(sample->dts());</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">if</span> (!status.ok())</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">return</span> status;</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  }</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">if</span> (encryptor_) {</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> status = EncryptSample(sample);</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">if</span> (!status.ok())</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span> status;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  }</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">return</span> <a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a81d8b1f324bdd2bc9cc2e5a469243926">Fragmenter::AddSample</a>(sample);</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> }</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div>
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<div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3159dcc8d0f02da113715a97d096afef"> 54</a></span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3159dcc8d0f02da113715a97d096afef">EncryptingFragmenter::InitializeFragment</a>(int64_t first_sample_dts) {</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> status = <a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ab55cbcb40b4c1308d70052a4b8ccd6af">Fragmenter::InitializeFragment</a>(first_sample_dts);</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">if</span> (!status.ok())</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">return</span> status;</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  traf()->auxiliary_size.sample_info_sizes.clear();</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  traf()->auxiliary_offset.offsets.clear();</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>  <span class="keyword">const</span> <span class="keywordtype">bool</span> enable_encryption = clear_time_ <= 0;</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (!enable_encryption) {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// This fragment should be in clear text.</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">// At most two sample description entries, an encrypted entry and a clear</span></div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// entry, are generated. The 1-based clear entry index is always 2.</span></div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">const</span> uint32_t kClearSampleDescriptionIndex = 2;</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  traf()->header.flags |=</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  TrackFragmentHeader::kSampleDescriptionIndexPresentMask;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  traf()->header.sample_description_index = kClearSampleDescriptionIndex;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">return</span> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3e66313de4ecb51f23fe438758e0153b">PrepareFragmentForEncryption</a>(enable_encryption);</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> }</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
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<div class="line"><a name="l00076"></a><span class="lineno"><a class="line" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a7917221a0f5093ad6770926ee0ae0ce2"> 76</a></span> <span class="keywordtype">void</span> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a7917221a0f5093ad6770926ee0ae0ce2">EncryptingFragmenter::FinalizeFragment</a>() {</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">if</span> (encryptor_) {</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  DCHECK_LE(clear_time_, 0);</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0184deccbe7e99ea7a685cf0de2f9156">FinalizeFragmentForEncryption</a>();</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  DCHECK_GT(clear_time_, 0);</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  clear_time_ -= fragment_duration();</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  }</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a5f346308fec8fa24cf47cf7ffd21d741">Fragmenter::FinalizeFragment</a>();</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> }</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
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<div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3e66313de4ecb51f23fe438758e0153b"> 87</a></span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3e66313de4ecb51f23fe438758e0153b">EncryptingFragmenter::PrepareFragmentForEncryption</a>(</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordtype">bool</span> enable_encryption) {</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">return</span> (!enable_encryption || encryptor_) ? Status::OK : <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5ed5486f22438e20d0d41524a47f4dd3">CreateEncryptor</a>();</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> }</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
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<div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0184deccbe7e99ea7a685cf0de2f9156"> 92</a></span> <span class="keywordtype">void</span> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0184deccbe7e99ea7a685cf0de2f9156">EncryptingFragmenter::FinalizeFragmentForEncryption</a>() {</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// The offset will be adjusted in Segmenter after knowing moof size.</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  traf()->auxiliary_offset.offsets.push_back(0);</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="comment">// Optimize saiz box.</span></div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <a class="code" href="../../d2/d51/structedash__packager_1_1media_1_1mp4_1_1SampleAuxiliaryInformationSize.html">SampleAuxiliaryInformationSize</a>& saiz = traf()->auxiliary_size;</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  saiz.sample_count = traf()->runs[0].sample_sizes.size();</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">if</span> (!saiz.sample_info_sizes.empty()) {</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ae51bbd5482783890e9843fd3ca61f2bb">OptimizeSampleEntries</a>(&saiz.sample_info_sizes,</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  &saiz.default_sample_info_size)) {</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  saiz.default_sample_info_size = 0;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  }</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="comment">// |sample_info_sizes| table is filled in only for subsample encryption,</span></div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="comment">// otherwise |sample_info_size| is just the IV size.</span></div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  DCHECK(!IsSubsampleEncryptionRequired());</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  saiz.default_sample_info_size = encryptor_->iv().size();</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  }</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> }</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
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<div class="line"><a name="l00112"></a><span class="lineno"><a class="line" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5ed5486f22438e20d0d41524a47f4dd3"> 112</a></span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5ed5486f22438e20d0d41524a47f4dd3">EncryptingFragmenter::CreateEncryptor</a>() {</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  DCHECK(encryption_key_);</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  scoped_ptr<AesCtrEncryptor> encryptor(<span class="keyword">new</span> <a class="code" href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html">AesCtrEncryptor</a>());</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> initialized = encryption_key_->iv.empty()</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  ? encryptor->InitializeWithRandomIv(</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  encryption_key_->key, kDefaultIvSize)</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  : encryptor->InitializeWithIv(</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  encryption_key_->key, encryption_key_->iv);</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordflow">if</span> (!initialized)</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">return</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a>(error::MUXER_FAILURE, <span class="stringliteral">"Failed to create the encryptor."</span>);</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  encryptor_ = encryptor.Pass();</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> }</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keywordtype">void</span> EncryptingFragmenter::EncryptBytes(uint8_t* data, uint32_t size) {</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  DCHECK(encryptor_);</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  CHECK(encryptor_->Encrypt(data, size, data));</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> }</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> EncryptingFragmenter::EncryptSample(scoped_refptr<MediaSample> sample) {</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  DCHECK(encryptor_);</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  FrameCENCInfo cenc_info(encryptor_->iv());</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  uint8_t* data = sample->writable_data();</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">if</span> (!IsSubsampleEncryptionRequired()) {</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  EncryptBytes(data, sample->data_size());</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  BufferReader reader(data, sample->data_size());</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">while</span> (reader.HasBytes(1)) {</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  uint64_t nalu_length;</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">if</span> (!reader.ReadNBytesInto8(&nalu_length, nalu_length_size_))</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">return</span> Status(error::MUXER_FAILURE, <span class="stringliteral">"Fail to read nalu_length."</span>);</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  SubsampleEntry subsample;</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  subsample.clear_bytes = nalu_length_size_ + 1;</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  subsample.cipher_bytes = nalu_length - 1;</div>
|
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">if</span> (!reader.SkipBytes(nalu_length)) {</div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">return</span> Status(error::MUXER_FAILURE,</div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="stringliteral">"Sample size does not match nalu_length."</span>);</div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  }</div>
|
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div>
|
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  EncryptBytes(data + subsample.clear_bytes, subsample.cipher_bytes);</div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  cenc_info.AddSubsample(subsample);</div>
|
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  data += nalu_length_size_ + nalu_length;</div>
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div>
|
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="comment">// The length of per-sample auxiliary datum, defined in CENC ch. 7.</span></div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  traf()->auxiliary_size.sample_info_sizes.push_back(cenc_info.ComputeSize());</div>
|
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  }</div>
|
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div>
|
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  cenc_info.Write(aux_data());</div>
|
|
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  encryptor_->UpdateIv();</div>
|
|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">return</span> Status::OK;</div>
|
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> }</div>
|
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
|
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> } <span class="comment">// namespace mp4</span></div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> } <span class="comment">// namespace media</span></div>
|
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> } <span class="comment">// namespace edash_packager</span></div>
|
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<div class="ttc" id="structedash__packager_1_1media_1_1mp4_1_1SampleAuxiliaryInformationSize_html"><div class="ttname"><a href="../../d2/d51/structedash__packager_1_1media_1_1mp4_1_1SampleAuxiliaryInformationSize.html">edash_packager::media::mp4::SampleAuxiliaryInformationSize</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d7b/box__definitions_8h_source.html#l00064">box_definitions.h:64</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html"><div class="ttname"><a href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html">edash_packager::media::mp4::Fragmenter</a></div><div class="ttdef"><b>Definition:</b> <a href="../../da/dd1/fragmenter_8h_source.html#l00029">fragmenter.h:29</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a5ed5486f22438e20d0d41524a47f4dd3"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5ed5486f22438e20d0d41524a47f4dd3">edash_packager::media::mp4::EncryptingFragmenter::CreateEncryptor</a></div><div class="ttdeci">Status CreateEncryptor()</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00112">encrypting_fragmenter.cc:112</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_1mp4_1_1EncryptingFragmenter_html_a3159dcc8d0f02da113715a97d096afef"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3159dcc8d0f02da113715a97d096afef">edash_packager::media::mp4::EncryptingFragmenter::InitializeFragment</a></div><div class="ttdeci">Status InitializeFragment(int64_t first_sample_dts) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00054">encrypting_fragmenter.cc:54</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_ab55cbcb40b4c1308d70052a4b8ccd6af"><div class="ttname"><a href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ab55cbcb40b4c1308d70052a4b8ccd6af">edash_packager::media::mp4::Fragmenter::InitializeFragment</a></div><div class="ttdeci">virtual Status InitializeFragment(int64_t first_sample_dts)</div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d9a/fragmenter_8cc_source.html#l00073">fragmenter.cc:73</a></div></div>
|
|
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_a81d8b1f324bdd2bc9cc2e5a469243926"><div class="ttname"><a href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a81d8b1f324bdd2bc9cc2e5a469243926">edash_packager::media::mp4::Fragmenter::AddSample</a></div><div class="ttdeci">virtual Status AddSample(scoped_refptr< MediaSample > sample)</div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d9a/fragmenter_8cc_source.html#l00036">fragmenter.cc:36</a></div></div>
|
|
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_ae51bbd5482783890e9843fd3ca61f2bb"><div class="ttname"><a href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ae51bbd5482783890e9843fd3ca61f2bb">edash_packager::media::mp4::Fragmenter::OptimizeSampleEntries</a></div><div class="ttdeci">bool OptimizeSampleEntries(std::vector< T > *entries, T *default_value)</div><div class="ttdef"><b>Definition:</b> <a href="../../da/dd1/fragmenter_8h_source.html#l00090">fragmenter.h:90</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_ae8fd13a579fee2167167bcdbb9637dcc"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae8fd13a579fee2167167bcdbb9637dcc">edash_packager::media::mp4::EncryptingFragmenter::AddSample</a></div><div class="ttdeci">Status AddSample(scoped_refptr< MediaSample > sample) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00039">encrypting_fragmenter.cc:39</a></div></div>
|
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCtrEncryptor_html"><div class="ttname"><a href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html">edash_packager::media::AesCtrEncryptor</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df0/aes__encryptor_8h_source.html#l00025">aes_encryptor.h:25</a></div></div>
|
|
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a7917221a0f5093ad6770926ee0ae0ce2"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a7917221a0f5093ad6770926ee0ae0ce2">edash_packager::media::mp4::EncryptingFragmenter::FinalizeFragment</a></div><div class="ttdeci">void FinalizeFragment() override</div><div class="ttdoc">Finalize and optimize the fragment. </div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00076">encrypting_fragmenter.cc:76</a></div></div>
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<div class="ttc" id="structedash__packager_1_1media_1_1mp4_1_1TrackFragment_html"><div class="ttname"><a href="../../d4/dd9/structedash__packager_1_1media_1_1mp4_1_1TrackFragment.html">edash_packager::media::mp4::TrackFragment</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d7b/box__definitions_8h_source.html#l00521">box_definitions.h:521</a></div></div>
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|
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a3e66313de4ecb51f23fe438758e0153b"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3e66313de4ecb51f23fe438758e0153b">edash_packager::media::mp4::EncryptingFragmenter::PrepareFragmentForEncryption</a></div><div class="ttdeci">virtual Status PrepareFragmentForEncryption(bool enable_encryption)</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00087">encrypting_fragmenter.cc:87</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_ae4352e452ece69206073274efd855f44"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae4352e452ece69206073274efd855f44">edash_packager::media::mp4::EncryptingFragmenter::EncryptingFragmenter</a></div><div class="ttdeci">EncryptingFragmenter(TrackFragment *traf, scoped_ptr< EncryptionKey > encryption_key, int64_t clear_time, uint8_t nalu_length_size)</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00025">encrypting_fragmenter.cc:25</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a0184deccbe7e99ea7a685cf0de2f9156"><div class="ttname"><a href="../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0184deccbe7e99ea7a685cf0de2f9156">edash_packager::media::mp4::EncryptingFragmenter::FinalizeFragmentForEncryption</a></div><div class="ttdeci">virtual void FinalizeFragmentForEncryption()</div><div class="ttdoc">Finalize current fragment for encryption. </div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d41/encrypting__fragmenter_8cc_source.html#l00092">encrypting_fragmenter.cc:92</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_a5f346308fec8fa24cf47cf7ffd21d741"><div class="ttname"><a href="../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a5f346308fec8fa24cf47cf7ffd21d741">edash_packager::media::mp4::Fragmenter::FinalizeFragment</a></div><div class="ttdeci">virtual void FinalizeFragment()</div><div class="ttdoc">Finalize and optimize the fragment. </div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d9a/fragmenter_8cc_source.html#l00091">fragmenter.cc:91</a></div></div>
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</div><!-- fragment --></div><!-- contents -->
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