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<li class="navelem"><a class="el" href="../../dir_3f8eec2fc361645de4b1ec14c19fffc7.html">packager</a></li><li class="navelem"><a class="el" href="../../dir_f99dae54fe7170f791f339b952d5067a.html">media</a></li><li class="navelem"><a class="el" href="../../dir_375ba2cfd8fd5b05c50b92d996b9d386.html">formats</a></li><li class="navelem"><a class="el" href="../../dir_ae142483ff91a68c468a97c037f98d4d.html">mp4</a></li> </ul>
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<div class="title">mp4_media_parser.h</div> </div>
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</div><!--header-->
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<div class="contents">
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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">#ifndef PACKAGER_MEDIA_FORMATS_MP4_MP4_MEDIA_PARSER_H_</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#define PACKAGER_MEDIA_FORMATS_MP4_MP4_MEDIA_PARSER_H_</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>  </div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <stdint.h></span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  </div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <map></span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <memory></span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <vector></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="preprocessor">#include "packager/base/callback_forward.h"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "packager/media/base/decryptor_source.h"</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include "packager/media/base/media_parser.h"</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include "packager/media/base/offset_byte_queue.h"</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><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</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"> 25</span> <span class="keyword">class </span>BoxReader;</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">class </span>TrackRunIterator;</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">struct </span>Movie;</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">struct </span>ProtectionSystemSpecificHeader;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  </div>
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<div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html"> 30</a></span> <span class="keyword">class </span><a class="code" href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html">MP4MediaParser</a> : <span class="keyword">public</span> <a class="code" href="../../d3/d0a/classshaka_1_1media_1_1MediaParser.html">MediaParser</a> {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <a class="code" href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html">MP4MediaParser</a>();</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  ~<a class="code" href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html">MP4MediaParser</a>() <span class="keyword">override</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="l00037"></a><span class="lineno"> 37</span>  <span class="keywordtype">void</span> <a class="code" href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html#abcde83a8740d8d9bbf8776784cf3227b">Init</a>(<span class="keyword">const</span> <a class="code" href="../../d3/d0a/classshaka_1_1media_1_1MediaParser.html#aef5795d2b3df2526c6e8afe1e4d072bf">InitCB</a>& init_cb,</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keyword">const</span> <a class="code" href="../../d3/d0a/classshaka_1_1media_1_1MediaParser.html#ad86528c837c0a773f7e853c38a4a3af2">NewMediaSampleCB</a>& new_media_sample_cb,</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">const</span> <a class="code" href="../../d3/d0a/classshaka_1_1media_1_1MediaParser.html#a1df661cd2b63498a87d6a253f6f7c195">NewTextSampleCB</a>& new_text_sample_cb,</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <a class="code" href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html">KeySource</a>* decryption_key_source) <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordtype">bool</span> <a class="code" href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html#a6f26e0d76aeda601fa87190901de27ea">Flush</a>() <span class="keyword">override</span> WARN_UNUSED_RESULT;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordtype">bool</span> <a class="code" href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html#a4105cdbe5ece03071a17c06fb27699b0">Parse</a>(<span class="keyword">const</span> uint8_t* buf, <span class="keywordtype">int</span> size) <span class="keyword">override</span> WARN_UNUSED_RESULT;</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  </div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">bool</span> <a class="code" href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html#af0ec1b44528a2997c0d548bee47862cf">LoadMoov</a>(<span class="keyword">const</span> std::string& file_path);</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>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">enum</span> State {</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  kWaitingForInit,</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  kParsingBoxes,</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  kEmittingSamples,</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  kError</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>  </div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordtype">bool</span> ParseBox(<span class="keywordtype">bool</span>* err);</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordtype">bool</span> ParseMoov(<a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html">mp4::BoxReader</a>* reader);</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordtype">bool</span> ParseMoof(<a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html">mp4::BoxReader</a>* reader);</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordtype">bool</span> FetchKeysIfNecessary(</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">const</span> std::vector<ProtectionSystemSpecificHeader>& headers);</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  </div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// To retain proper framing, each 'mdat' box must be read; to limit memory</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// usage, the box's data needs to be discarded incrementally as frames are</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// extracted from the stream. This function discards data from the stream up</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// to |offset|, updating the |mdat_tail_| value so that framing can be</span></div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// retained after all 'mdat' information has been read.</span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">// Returns 'true' on success, 'false' if there was an error.</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordtype">bool</span> ReadAndDiscardMDATsUntil(<span class="keyword">const</span> int64_t offset);</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="keywordtype">void</span> ChangeState(State new_state);</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>  <span class="keywordtype">bool</span> EmitConfigs();</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  </div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordtype">bool</span> EnqueueSample(<span class="keywordtype">bool</span>* err);</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="keywordtype">void</span> Reset();</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>  State state_;</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="../../d3/d0a/classshaka_1_1media_1_1MediaParser.html#aef5795d2b3df2526c6e8afe1e4d072bf">InitCB</a> init_cb_;</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <a class="code" href="../../d3/d0a/classshaka_1_1media_1_1MediaParser.html#ad86528c837c0a773f7e853c38a4a3af2">NewMediaSampleCB</a> new_sample_cb_;</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html">KeySource</a>* decryption_key_source_;</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  std::unique_ptr<DecryptorSource> decryptor_source_;</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  </div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="code" href="../../d9/df9/classshaka_1_1media_1_1OffsetByteQueue.html">OffsetByteQueue</a> queue_;</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>  <span class="comment">// These two parameters are only valid in the |kEmittingSegments| state.</span></div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="comment">// |moof_head_| is the offset of the start of the most recently parsed moof</span></div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// block. All byte offsets in sample information are relative to this offset,</span></div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="comment">// as mandated by the Media Source spec.</span></div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  int64_t moof_head_;</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="comment">// |mdat_tail_| is the stream offset of the end of the current 'mdat' box.</span></div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// Valid iff it is greater than the head of the queue.</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  int64_t mdat_tail_;</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  </div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  std::unique_ptr<Movie> moov_;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  std::unique_ptr<TrackRunIterator> runs_;</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  </div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html">MP4MediaParser</a>);</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</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> } <span class="comment">// namespace mp4</span></div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> } <span class="comment">// namespace shaka</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> <span class="preprocessor">#endif // PACKAGER_MEDIA_FORMATS_MP4_MP4_MEDIA_PARSER_H_</span></div>
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</div><!-- fragment --></div><!-- contents -->
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<div class="ttc" id="aclassshaka_1_1media_1_1MediaParser_html"><div class="ttname"><a href="../../d3/d0a/classshaka_1_1media_1_1MediaParser.html">shaka::media::MediaParser</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d12/media__parser_8h_source.html#l00025">media_parser.h:25</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp4_1_1MP4MediaParser_html"><div class="ttname"><a href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html">shaka::media::mp4::MP4MediaParser</a></div><div class="ttdef"><b>Definition:</b> <a href="../../de/d7b/mp4__media__parser_8h_source.html#l00030">mp4_media_parser.h:30</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp4_1_1MP4MediaParser_html_af0ec1b44528a2997c0d548bee47862cf"><div class="ttname"><a href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html#af0ec1b44528a2997c0d548bee47862cf">shaka::media::mp4::MP4MediaParser::LoadMoov</a></div><div class="ttdeci">bool LoadMoov(const std::string &file_path)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/def/mp4__media__parser_8cc_source.html#l00246">mp4_media_parser.cc:246</a></div></div>
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<div class="ttc" id="anamespaceshaka_html"><div class="ttname"><a href="../../d8/daf/namespaceshaka.html">shaka</a></div><div class="ttdoc">All the methods that are virtual are virtual for mocking.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d15/gflags__hex__bytes_8cc_source.html#l00011">gflags_hex_bytes.cc:11</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1MediaParser_html_ad86528c837c0a773f7e853c38a4a3af2"><div class="ttname"><a href="../../d3/d0a/classshaka_1_1media_1_1MediaParser.html#ad86528c837c0a773f7e853c38a4a3af2">shaka::media::MediaParser::NewMediaSampleCB</a></div><div class="ttdeci">base::Callback< bool(uint32_t track_id, std::shared_ptr< MediaSample > media_sample)> NewMediaSampleCB</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d12/media__parser_8h_source.html#l00044">media_parser.h:44</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1MediaParser_html_aef5795d2b3df2526c6e8afe1e4d072bf"><div class="ttname"><a href="../../d3/d0a/classshaka_1_1media_1_1MediaParser.html#aef5795d2b3df2526c6e8afe1e4d072bf">shaka::media::MediaParser::InitCB</a></div><div class="ttdeci">base::Callback< void(const std::vector< std::shared_ptr< StreamInfo > > &stream_info)> InitCB</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d12/media__parser_8h_source.html#l00035">media_parser.h:35</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp4_1_1MP4MediaParser_html_abcde83a8740d8d9bbf8776784cf3227b"><div class="ttname"><a href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html#abcde83a8740d8d9bbf8776784cf3227b">shaka::media::mp4::MP4MediaParser::Init</a></div><div class="ttdeci">void Init(const InitCB &init_cb, const NewMediaSampleCB &new_media_sample_cb, const NewTextSampleCB &new_text_sample_cb, KeySource *decryption_key_source) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/def/mp4__media__parser_8cc_source.html#l00181">mp4_media_parser.cc:181</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp4_1_1BoxReader_html"><div class="ttname"><a href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html">shaka::media::mp4::BoxReader</a></div><div class="ttdoc">Class for reading MP4 boxes.</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d92/box__reader_8h_source.html#l00025">box_reader.h:25</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp4_1_1MP4MediaParser_html_a4105cdbe5ece03071a17c06fb27699b0"><div class="ttname"><a href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html#a4105cdbe5ece03071a17c06fb27699b0">shaka::media::mp4::MP4MediaParser::Parse</a></div><div class="ttdeci">bool Parse(const uint8_t *buf, int size) override WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/def/mp4__media__parser_8cc_source.html#l00212">mp4_media_parser.cc:212</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1KeySource_html"><div class="ttname"><a href="../../d1/d1f/classshaka_1_1media_1_1KeySource.html">shaka::media::KeySource</a></div><div class="ttdoc">KeySource is responsible for encryption key acquisition.</div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d3f/key__source_8h_source.html#l00051">key_source.h:51</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1MediaParser_html_a1df661cd2b63498a87d6a253f6f7c195"><div class="ttname"><a href="../../d3/d0a/classshaka_1_1media_1_1MediaParser.html#a1df661cd2b63498a87d6a253f6f7c195">shaka::media::MediaParser::NewTextSampleCB</a></div><div class="ttdeci">base::Callback< bool(uint32_t track_id, std::shared_ptr< TextSample > text_sample)> NewTextSampleCB</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d12/media__parser_8h_source.html#l00053">media_parser.h:53</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1OffsetByteQueue_html"><div class="ttname"><a href="../../d9/df9/classshaka_1_1media_1_1OffsetByteQueue.html">shaka::media::OffsetByteQueue</a></div><div class="ttdef"><b>Definition:</b> <a href="../../de/d34/offset__byte__queue_8h_source.html#l00019">offset_byte_queue.h:19</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1mp4_1_1MP4MediaParser_html_a6f26e0d76aeda601fa87190901de27ea"><div class="ttname"><a href="../../d7/dd5/classshaka_1_1media_1_1mp4_1_1MP4MediaParser.html#a6f26e0d76aeda601fa87190901de27ea">shaka::media::mp4::MP4MediaParser::Flush</a></div><div class="ttdeci">bool Flush() override WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/def/mp4__media__parser_8cc_source.html#l00205">mp4_media_parser.cc:205</a></div></div>
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