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<div class="title">webvtt_media_parser.h</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 2015 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 MEDIA_FORMATS_WEBVTT_WEBVTT_MEDIA_PARSER_H_</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor"></span><span class="preprocessor">#define MEDIA_FORMATS_WEBVTT_WEBVTT_MEDIA_PARSER_H_</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor"></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> <span class="preprocessor">#include <string></span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <vector></span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "packager/base/compiler_specific.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "packager/media/base/media_parser.h"</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span>edash_packager {</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// If comment is not empty, then this is metadata and other fields must</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// be empty.</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// Data that can be multiline are vector of strings.</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"><a class="line" href="../../df/dda/structedash__packager_1_1media_1_1Cue.html"> 23</a></span> <span class="keyword">struct </span><a class="code" href="../../df/dda/structedash__packager_1_1media_1_1Cue.html">Cue</a> {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <a class="code" href="../../df/dda/structedash__packager_1_1media_1_1Cue.html">Cue</a>();</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  ~<a class="code" href="../../df/dda/structedash__packager_1_1media_1_1Cue.html">Cue</a>();</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>  std::string identifier;</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  uint64_t start_time;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  uint64_t duration;</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  std::string settings;</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  std::vector<std::string> payload;</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  std::vector<std::string> comment;</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</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="comment">// WebVTT parser.</span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// The input may not be encrypted so decryption_key_source is ignored.</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="../../d2/d51/classedash__packager_1_1media_1_1WebVttMediaParser.html"> 37</a></span> <span class="keyword">class </span><a class="code" href="../../d2/d51/classedash__packager_1_1media_1_1WebVttMediaParser.html">WebVttMediaParser</a> : <span class="keyword">public</span> <a class="code" href="../../dc/d48/classedash__packager_1_1media_1_1MediaParser.html">MediaParser</a> {</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <a class="code" href="../../d2/d51/classedash__packager_1_1media_1_1WebVttMediaParser.html">WebVttMediaParser</a>();</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  ~<a class="code" href="../../d2/d51/classedash__packager_1_1media_1_1WebVttMediaParser.html">WebVttMediaParser</a>() <span class="keyword">override</span>;</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordtype">void</span> <a class="code" href="../../d2/d51/classedash__packager_1_1media_1_1WebVttMediaParser.html#a6e678b88894210cd665c1466b0c0fd41">Init</a>(<span class="keyword">const</span> <a class="code" href="../../dc/d48/classedash__packager_1_1media_1_1MediaParser.html#af5c74c8723a5306faddcdfdcadb4ab4a">InitCB</a>& init_cb,</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">const</span> <a class="code" href="../../dc/d48/classedash__packager_1_1media_1_1MediaParser.html#a1628c19a91f1b8ae123f7350936bfe32">NewSampleCB</a>& new_sample_cb,</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="../../d9/d8b/classedash__packager_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="l00047"></a><span class="lineno"> 47</span>  <span class="keywordtype">bool</span> <a class="code" href="../../d2/d51/classedash__packager_1_1media_1_1WebVttMediaParser.html#a258b3dda049d3ae4b03be8f91976dd9b">Flush</a>() <span class="keyword">override</span> WARN_UNUSED_RESULT;</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">bool</span> <a class="code" href="../../d2/d51/classedash__packager_1_1media_1_1WebVttMediaParser.html#adea6973058b03be69e9f07181e4242de">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="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="keyword">private</span>:</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">enum</span> WebVttReadingState {</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  kHeader,</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  kMetadata,</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  kCueIdentifierOrTimingOrComment,</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  kCueTiming,</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  kCuePayload,</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  kComment,</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  kParseError,</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> </div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="../../dc/d48/classedash__packager_1_1media_1_1MediaParser.html#af5c74c8723a5306faddcdfdcadb4ab4a">InitCB</a> init_cb_;</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="../../dc/d48/classedash__packager_1_1media_1_1MediaParser.html#a1628c19a91f1b8ae123f7350936bfe32">NewSampleCB</a> new_sample_cb_;</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="comment">// All the unprocessed data passed to this parser.</span></div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  std::string data_;</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">// The WEBVTT text + metadata header (global settings) for this webvtt.</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// One element per line.</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  std::vector<std::string> header_;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// This is set to what the parser is expecting. For example, if the parse is</span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">// expecting a kCueTiming, then the next line that it parses should be a</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">// WebVTT timing line or an empty line.</span></div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  WebVttReadingState state_;</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <a class="code" href="../../df/dda/structedash__packager_1_1media_1_1Cue.html">Cue</a> current_cue_;</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>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="../../d2/d51/classedash__packager_1_1media_1_1WebVttMediaParser.html">WebVttMediaParser</a>);</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> };</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="comment">// namespace media</span></div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> } <span class="comment">// namespace edash_packager</span></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> <span class="preprocessor">#endif // MEDIA_FORMATS_WEBVTT_WEBVTT_MEDIA_PARSER_H_</span></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1WebVttMediaParser_html"><div class="ttname"><a href="../../d2/d51/classedash__packager_1_1media_1_1WebVttMediaParser.html">edash_packager::media::WebVttMediaParser</a></div><div class="ttdef"><b>Definition:</b> <a href="../../db/d64/webvtt__media__parser_8h_source.html#l00037">webvtt_media_parser.h:37</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1WebVttMediaParser_html_adea6973058b03be69e9f07181e4242de"><div class="ttname"><a href="../../d2/d51/classedash__packager_1_1media_1_1WebVttMediaParser.html#adea6973058b03be69e9f07181e4242de">edash_packager::media::WebVttMediaParser::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="../../d1/d2f/webvtt__media__parser_8cc_source.html#l00250">webvtt_media_parser.cc:250</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1MediaParser_html"><div class="ttname"><a href="../../dc/d48/classedash__packager_1_1media_1_1MediaParser.html">edash_packager::media::MediaParser</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d12/media__parser_8h_source.html#l00026">media_parser.h:26</a></div></div>
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<div class="ttc" id="structedash__packager_1_1media_1_1Cue_html"><div class="ttname"><a href="../../df/dda/structedash__packager_1_1media_1_1Cue.html">edash_packager::media::Cue</a></div><div class="ttdef"><b>Definition:</b> <a href="../../db/d64/webvtt__media__parser_8h_source.html#l00023">webvtt_media_parser.h:23</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1MediaParser_html_a1628c19a91f1b8ae123f7350936bfe32"><div class="ttname"><a href="../../dc/d48/classedash__packager_1_1media_1_1MediaParser.html#a1628c19a91f1b8ae123f7350936bfe32">edash_packager::media::MediaParser::NewSampleCB</a></div><div class="ttdeci">base::Callback< bool(uint32_t track_id, const scoped_refptr< MediaSample > &media_sample)> NewSampleCB</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="classedash__packager_1_1media_1_1KeySource_html"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html">edash_packager::media::KeySource</a></div><div class="ttdoc">KeySource is responsible for encryption key acquisition. </div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d3f/key__source_8h_source.html#l00029">key_source.h:29</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1MediaParser_html_af5c74c8723a5306faddcdfdcadb4ab4a"><div class="ttname"><a href="../../dc/d48/classedash__packager_1_1media_1_1MediaParser.html#af5c74c8723a5306faddcdfdcadb4ab4a">edash_packager::media::MediaParser::InitCB</a></div><div class="ttdeci">base::Callback< void(const std::vector< scoped_refptr< 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="classedash__packager_1_1media_1_1WebVttMediaParser_html_a6e678b88894210cd665c1466b0c0fd41"><div class="ttname"><a href="../../d2/d51/classedash__packager_1_1media_1_1WebVttMediaParser.html#a6e678b88894210cd665c1466b0c0fd41">edash_packager::media::WebVttMediaParser::Init</a></div><div class="ttdeci">void Init(const InitCB &init_cb, const NewSampleCB &new_sample_cb, KeySource *decryption_key_source) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d2f/webvtt__media__parser_8cc_source.html#l00221">webvtt_media_parser.cc:221</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1WebVttMediaParser_html_a258b3dda049d3ae4b03be8f91976dd9b"><div class="ttname"><a href="../../d2/d51/classedash__packager_1_1media_1_1WebVttMediaParser.html#a258b3dda049d3ae4b03be8f91976dd9b">edash_packager::media::WebVttMediaParser::Flush</a></div><div class="ttdeci">bool Flush() override WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d2f/webvtt__media__parser_8cc_source.html#l00228">webvtt_media_parser.cc:228</a></div></div>
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