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<div class="title">mpd_utils.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/mpd/base/mpd_utils.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 <libxml/tree.h></span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "packager/base/logging.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/base/strings/string_number_conversions.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/mpd/base/xml/scoped_xml_ptr.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">namespace </span>edash_packager {</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> </div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> std::string TextCodecString(</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="keyword">const</span> edash_packager::MediaInfo& media_info) {</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  CHECK(media_info.has_text_info());</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="keyword">const</span> std::string& format = media_info.text_info().format();</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="comment">// DASH IOP mentions that the codec for ttml in mp4 is stpp.</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="keywordflow">if</span> (format == <span class="stringliteral">"ttml"</span> &&</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  (media_info.container_type() == MediaInfo::CONTAINER_MP4)) {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keywordflow">return</span> <span class="stringliteral">"stpp"</span>;</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  }</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>  <span class="comment">// Otherwise codec doesn't need to be specified, e.g. vtt and ttml+xml are</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="comment">// obvious from the mime type.</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keywordflow">return</span> <span class="stringliteral">""</span>;</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> }</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> } <span class="comment">// namespace</span></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> <span class="keywordtype">bool</span> HasVODOnlyFields(<span class="keyword">const</span> MediaInfo& media_info) {</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordflow">return</span> media_info.has_init_range() || media_info.has_index_range() ||</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  media_info.has_media_file_name() ||</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  media_info.has_media_duration_seconds();</div>
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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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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keywordtype">bool</span> HasLiveOnlyFields(<span class="keyword">const</span> MediaInfo& media_info) {</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">return</span> media_info.has_init_segment_name() ||</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  media_info.has_segment_template() ||</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  media_info.has_segment_duration_seconds();</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> </div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="keywordtype">void</span> RemoveDuplicateAttributes(</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  ContentProtectionElement* content_protection_element) {</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  DCHECK(content_protection_element);</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">typedef</span> std::map<std::string, std::string> AttributesMap;</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  AttributesMap& attributes = content_protection_element->additional_attributes;</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">if</span> (!content_protection_element->value.empty())</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  attributes.erase(<span class="stringliteral">"value"</span>);</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">if</span> (!content_protection_element->scheme_id_uri.empty())</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  attributes.erase(<span class="stringliteral">"schemeIdUri"</span>);</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> </div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> std::string GetCodecs(<span class="keyword">const</span> MediaInfo& media_info) {</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  CHECK(OnlyOneTrue(media_info.has_video_info(), media_info.has_audio_info(),</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  media_info.has_text_info()));</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">if</span> (media_info.has_video_info()) {</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">if</span> (media_info.container_type() == MediaInfo::CONTAINER_WEBM) {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  std::string codec = media_info.video_info().codec().substr(0, 4);</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// media_info.video_info().codec() contains new revised codec string</span></div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// specified by "VPx in ISO BMFF" document, which is not compatible to</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// old codec strings in WebM. Hack it here before all browsers support</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// new codec strings.</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">if</span> (codec == <span class="stringliteral">"vp08"</span>)</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">return</span> <span class="stringliteral">"vp8"</span>;</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">if</span> (codec == <span class="stringliteral">"vp09"</span>)</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">return</span> <span class="stringliteral">"vp9"</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"> 76</span>  <span class="keywordflow">return</span> media_info.video_info().codec();</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  }</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span> (media_info.has_audio_info())</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> media_info.audio_info().codec();</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">if</span> (media_info.has_text_info())</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> TextCodecString(media_info);</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  NOTREACHED();</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">return</span> <span class="stringliteral">""</span>;</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> }</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> std::string SecondsToXmlDuration(<span class="keywordtype">double</span> seconds) {</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">return</span> <span class="stringliteral">"PT"</span> + base::DoubleToString(seconds) + <span class="stringliteral">"S"</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"> 92</span> </div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="keywordtype">bool</span> GetDurationAttribute(xmlNodePtr node, <span class="keywordtype">float</span>* duration) {</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  DCHECK(node);</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  DCHECK(duration);</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kDuration[] = <span class="stringliteral">"duration"</span>;</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  xml::scoped_xml_ptr<xmlChar> duration_value(</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  xmlGetProp(node, BAD_CAST kDuration));</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">if</span> (!duration_value)</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordtype">double</span> duration_double_precision = 0.0;</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">if</span> (!base::StringToDouble(reinterpret_cast<const char*>(duration_value.get()),</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  &duration_double_precision)) {</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  }</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  *duration = <span class="keyword">static_cast<</span><span class="keywordtype">float</span><span class="keyword">></span>(duration_double_precision);</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">return</span> <span class="keyword">true</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"> 112</span> </div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="keywordtype">bool</span> MoreThanOneTrue(<span class="keywordtype">bool</span> b1, <span class="keywordtype">bool</span> b2, <span class="keywordtype">bool</span> b3) {</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span> (b1 && b2) || (b2 && b3) || (b3 && b1);</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> }</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="keywordtype">bool</span> AtLeastOneTrue(<span class="keywordtype">bool</span> b1, <span class="keywordtype">bool</span> b2, <span class="keywordtype">bool</span> b3) { <span class="keywordflow">return</span> b1 || b2 || b3; }</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="keywordtype">bool</span> OnlyOneTrue(<span class="keywordtype">bool</span> b1, <span class="keywordtype">bool</span> b2, <span class="keywordtype">bool</span> b3) {</div>
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|
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span> !MoreThanOneTrue(b1, b2, b3) && AtLeastOneTrue(b1, b2, b3);</div>
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|
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> }</div>
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<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> <span class="comment">// Coverts binary data into human readable UUID format.</span></div>
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|
<div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="../../db/d09/namespaceedash__packager.html#a7015ba137f31c7ae734dc7abb254be64"> 124</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../db/d09/namespaceedash__packager.html#a7015ba137f31c7ae734dc7abb254be64">HexToUUID</a>(<span class="keyword">const</span> std::string& data, std::string* uuid_format) {</div>
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|
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  DCHECK(uuid_format);</div>
|
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> kExpectedUUIDSize = 16;</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">if</span> (data.size() != kExpectedUUIDSize) {</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  LOG(ERROR) << <span class="stringliteral">"UUID size is expected to be "</span> << kExpectedUUIDSize</div>
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|
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  << <span class="stringliteral">" but is "</span> << data.size() << <span class="stringliteral">" and the data in hex is "</span></div>
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|
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  << base::HexEncode(data.data(), data.size());</div>
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|
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  }</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">const</span> std::string hex_encoded =</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  base::StringToLowerASCII(base::HexEncode(data.data(), data.size()));</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  DCHECK_EQ(hex_encoded.size(), kExpectedUUIDSize * 2);</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  base::StringPiece all(hex_encoded);</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="comment">// Note UUID has 5 parts separated with dashes.</span></div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="comment">// e.g. 123e4567-e89b-12d3-a456-426655440000</span></div>
|
|
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="comment">// These StringPieces have each part.</span></div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  base::StringPiece first = all.substr(0, 8);</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  base::StringPiece second = all.substr(8, 4);</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  base::StringPiece third = all.substr(12, 4);</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  base::StringPiece fourth = all.substr(16, 4);</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  base::StringPiece fifth = all.substr(20, 12);</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div>
|
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="comment">// 32 hexadecimal characters with 4 hyphens.</span></div>
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|
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> kHumanReadableUUIDSize = 36;</div>
|
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  uuid_format->reserve(kHumanReadableUUIDSize);</div>
|
|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  first.CopyToString(uuid_format);</div>
|
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  uuid_format->append(<span class="stringliteral">"-"</span>);</div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  second.AppendToString(uuid_format);</div>
|
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  uuid_format->append(<span class="stringliteral">"-"</span>);</div>
|
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  third.AppendToString(uuid_format);</div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  uuid_format->append(<span class="stringliteral">"-"</span>);</div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  fourth.AppendToString(uuid_format);</div>
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  uuid_format->append(<span class="stringliteral">"-"</span>);</div>
|
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  fifth.AppendToString(uuid_format);</div>
|
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> }</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> <span class="keywordtype">void</span> UpdateContentProtectionPsshHelper(</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keyword">const</span> std::string& drm_uuid,</div>
|
|
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">const</span> std::string& pssh,</div>
|
|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  std::list<ContentProtectionElement>* content_protection_elements) {</div>
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|
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">const</span> std::string drm_uuid_schemd_id_uri_form = <span class="stringliteral">"urn:uuid:"</span> + drm_uuid;</div>
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|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">for</span> (std::list<ContentProtectionElement>::iterator protection =</div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  content_protection_elements->begin();</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  protection != content_protection_elements->end(); ++protection) {</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">if</span> (protection->scheme_id_uri != drm_uuid_schemd_id_uri_form) {</div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</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>  <span class="keywordflow">for</span> (std::vector<Element>::iterator subelement =</div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  protection->subelements.begin();</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  subelement != protection->subelements.end(); ++subelement) {</div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">if</span> (subelement->name == kPsshElementName) {</div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="comment">// For now, we want to remove the PSSH element because some players do</span></div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// not support updating pssh.</span></div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  protection->subelements.erase(subelement);</div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="comment">// TODO(rkuroiwa): Uncomment this and remove the line above when</span></div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="comment">// shaka-player supports updating PSSH.</span></div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="comment">// subelement->content = pssh;</span></div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordflow">return</span>;</div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  }</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  }</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>  <span class="comment">// Reaching here means <cenc:pssh> does not exist under the</span></div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="comment">// ContentProtection element. Add it.</span></div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="comment">// TODO(rkuroiwa): Uncomment this when shaka-player supports updating PSSH.</span></div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="comment">// Element cenc_pssh;</span></div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="comment">// cenc_pssh.name = kPsshElementName;</span></div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="comment">// cenc_pssh.content = pssh;</span></div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="comment">// protection->subelements.push_back(cenc_pssh);</span></div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">return</span>;</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  }</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> </div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="comment">// Reaching here means that ContentProtection for the DRM does not exist.</span></div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="comment">// Add it.</span></div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  ContentProtectionElement content_protection;</div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  content_protection.scheme_id_uri = drm_uuid_schemd_id_uri_form;</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="comment">// TODO(rkuroiwa): Uncomment this when shaka-player supports updating PSSH.</span></div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">// Element cenc_pssh;</span></div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="comment">// cenc_pssh.name = kPsshElementName;</span></div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="comment">// cenc_pssh.content = pssh;</span></div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="comment">// content_protection.subelements.push_back(cenc_pssh);</span></div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  content_protection_elements->push_back(content_protection);</div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">return</span>;</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> }</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="keyword">namespace </span>{</div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment">// Helper function. This works because Representation and AdaptationSet both</span></div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment">// have AddContentProtectionElement().</span></div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="keyword">template</span> <<span class="keyword">typename</span> ContentProtectionParent></div>
|
|
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="keywordtype">void</span> AddContentProtectionElementsHelperTemplated(</div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keyword">const</span> MediaInfo& media_info,</div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  ContentProtectionParent* parent) {</div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  DCHECK(parent);</div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">if</span> (!media_info.has_protected_content())</div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">return</span>;</div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keyword">const</span> MediaInfo::ProtectedContent& protected_content =</div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  media_info.protected_content();</div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="comment">// DASH MPD spec specifies a default ContentProtection element for ISO BMFF</span></div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="comment">// (MP4) files.</span></div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> is_mp4_container =</div>
|
|
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  media_info.container_type() == MediaInfo::CONTAINER_MP4;</div>
|
|
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  std::string key_id_uuid_format;</div>
|
|
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordflow">if</span> (protected_content.has_default_key_id()) {</div>
|
|
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../db/d09/namespaceedash__packager.html#a7015ba137f31c7ae734dc7abb254be64">HexToUUID</a>(protected_content.default_key_id(), &key_id_uuid_format)) {</div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  LOG(ERROR) << <span class="stringliteral">"Failed to convert default key ID into UUID format."</span>;</div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  }</div>
|
|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  }</div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> </div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">if</span> (is_mp4_container) {</div>
|
|
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  ContentProtectionElement mp4_content_protection;</div>
|
|
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  mp4_content_protection.scheme_id_uri = kEncryptedMp4Scheme;</div>
|
|
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  mp4_content_protection.value = kEncryptedMp4Value;</div>
|
|
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">if</span> (!key_id_uuid_format.empty()) {</div>
|
|
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  mp4_content_protection.additional_attributes[<span class="stringliteral">"cenc:default_KID"</span>] =</div>
|
|
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  key_id_uuid_format;</div>
|
|
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  }</div>
|
|
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div>
|
|
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  parent->AddContentProtectionElement(mp4_content_protection);</div>
|
|
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  }</div>
|
|
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> </div>
|
|
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < protected_content.content_protection_entry().size();</div>
|
|
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  ++i) {</div>
|
|
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keyword">const</span> MediaInfo::ProtectedContent::ContentProtectionEntry& entry =</div>
|
|
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  protected_content.content_protection_entry(i);</div>
|
|
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">if</span> (!entry.has_uuid()) {</div>
|
|
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  LOG(WARNING)</div>
|
|
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  << <span class="stringliteral">"ContentProtectionEntry was specified but no UUID is set for "</span></div>
|
|
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  << entry.name_version() << <span class="stringliteral">", skipping."</span>;</div>
|
|
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  }</div>
|
|
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div>
|
|
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  ContentProtectionElement drm_content_protection;</div>
|
|
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  drm_content_protection.scheme_id_uri = <span class="stringliteral">"urn:uuid:"</span> + entry.uuid();</div>
|
|
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keywordflow">if</span> (entry.has_name_version())</div>
|
|
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  drm_content_protection.value = entry.name_version();</div>
|
|
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> </div>
|
|
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keywordflow">if</span> (entry.has_pssh()) {</div>
|
|
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  std::string base64_encoded_pssh;</div>
|
|
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  base::Base64Encode(entry.pssh(), &base64_encoded_pssh);</div>
|
|
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  Element cenc_pssh;</div>
|
|
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  cenc_pssh.name = kPsshElementName;</div>
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<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  cenc_pssh.content = base64_encoded_pssh;</div>
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<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  drm_content_protection.subelements.push_back(cenc_pssh);</div>
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<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  }</div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> </div>
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<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keywordflow">if</span> (!key_id_uuid_format.empty() && !is_mp4_container) {</div>
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<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  drm_content_protection.additional_attributes[<span class="stringliteral">"cenc:default_KID"</span>] =</div>
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<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  key_id_uuid_format;</div>
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<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  }</div>
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<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> </div>
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<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  parent->AddContentProtectionElement(drm_content_protection);</div>
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<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  }</div>
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<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> </div>
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<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  LOG_IF(WARNING, protected_content.content_protection_entry().size() == 0)</div>
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<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  << <span class="stringliteral">"The media is encrypted but no content protection specified."</span>;</div>
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<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> }</div>
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<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> } <span class="comment">// namespace</span></div>
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<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> </div>
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<div class="line"><a name="l00287"></a><span class="lineno"><a class="line" href="../../db/d09/namespaceedash__packager.html#a6f62cefcc7cf1a95f19bbea3b310fbab"> 287</a></span> <span class="keywordtype">void</span> <a class="code" href="../../db/d09/namespaceedash__packager.html#a6f62cefcc7cf1a95f19bbea3b310fbab">AddContentProtectionElements</a>(<span class="keyword">const</span> MediaInfo& media_info,</div>
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<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <a class="code" href="../../d7/d15/classedash__packager_1_1Representation.html">Representation</a>* parent) {</div>
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<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  AddContentProtectionElementsHelperTemplated(media_info, parent);</div>
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<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> }</div>
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<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> </div>
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<div class="line"><a name="l00292"></a><span class="lineno"><a class="line" href="../../db/d09/namespaceedash__packager.html#a63896c3ea3c207506f18095624f2ed84"> 292</a></span> <span class="keywordtype">void</span> <a class="code" href="../../db/d09/namespaceedash__packager.html#a6f62cefcc7cf1a95f19bbea3b310fbab">AddContentProtectionElements</a>(<span class="keyword">const</span> MediaInfo& media_info,</div>
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<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <a class="code" href="../../db/de4/classedash__packager_1_1AdaptationSet.html">AdaptationSet</a>* parent) {</div>
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<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  AddContentProtectionElementsHelperTemplated(media_info, parent);</div>
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<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> }</div>
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<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> </div>
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<div class="line"><a name="l00297"></a><span class="lineno"> 297</span> </div>
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<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> } <span class="comment">// namespace edash_packager</span></div>
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<div class="ttc" id="classedash__packager_1_1Representation_html"><div class="ttname"><a href="../../d7/d15/classedash__packager_1_1Representation.html">edash_packager::Representation</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d6/da3/mpd__builder_8h_source.html#l00428">mpd_builder.h:428</a></div></div>
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<div class="ttc" id="namespaceedash__packager_html_a6f62cefcc7cf1a95f19bbea3b310fbab"><div class="ttname"><a href="../../db/d09/namespaceedash__packager.html#a6f62cefcc7cf1a95f19bbea3b310fbab">edash_packager::AddContentProtectionElements</a></div><div class="ttdeci">void AddContentProtectionElements(const MediaInfo &media_info, Representation *parent)</div><div class="ttdef"><b>Definition:</b> <a href="../../db/dfb/mpd__utils_8cc_source.html#l00287">mpd_utils.cc:287</a></div></div>
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<div class="ttc" id="classedash__packager_1_1AdaptationSet_html"><div class="ttname"><a href="../../db/de4/classedash__packager_1_1AdaptationSet.html">edash_packager::AdaptationSet</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d6/da3/mpd__builder_8h_source.html#l00167">mpd_builder.h:167</a></div></div>
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<div class="ttc" id="namespaceedash__packager_html_a7015ba137f31c7ae734dc7abb254be64"><div class="ttname"><a href="../../db/d09/namespaceedash__packager.html#a7015ba137f31c7ae734dc7abb254be64">edash_packager::HexToUUID</a></div><div class="ttdeci">bool HexToUUID(const std::string &data, std::string *uuid_format)</div><div class="ttdef"><b>Definition:</b> <a href="../../db/dfb/mpd__utils_8cc_source.html#l00124">mpd_utils.cc:124</a></div></div>
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