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<div class="title">webm_info_parser.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 The Chromium Authors. All rights reserved.</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Use of this source code is governed by a BSD-style license that can be</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// found in the LICENSE file.</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>  </div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "packager/media/formats/webm/webm_info_parser.h"</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/base/logging.h"</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include "packager/media/formats/webm/webm_constants.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="keyword">namespace </span><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>  </div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// Default timecode scale if the TimecodeScale element is</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// not specified in the INFO element.</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kWebMDefaultTimecodeScale = 1000000;</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> WebMInfoParser::WebMInfoParser()</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  : timecode_scale_(-1),</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  duration_(-1) {</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>  </div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> WebMInfoParser::~WebMInfoParser() {}</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  </div>
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<div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="../../db/dae/classshaka_1_1media_1_1WebMInfoParser.html#ae0b4d37e02d43627b1bc9c64f43ee3f7"> 24</a></span> <span class="keywordtype">int</span> <a class="code" href="../../db/dae/classshaka_1_1media_1_1WebMInfoParser.html#ae0b4d37e02d43627b1bc9c64f43ee3f7">WebMInfoParser::Parse</a>(<span class="keyword">const</span> uint8_t* buf, <span class="keywordtype">int</span> size) {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  timecode_scale_ = -1;</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  duration_ = -1;</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>  <a class="code" href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html">WebMListParser</a> parser(kWebMIdInfo, <span class="keyword">this</span>);</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keywordtype">int</span> result = parser.<a class="code" href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#acd805b7eb25afcd9a3be2d8d88e3c6af">Parse</a>(buf, size);</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">if</span> (result <= 0)</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keywordflow">return</span> result;</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>  <span class="comment">// For now we do all or nothing parsing.</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordflow">return</span> parser.<a class="code" href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#afc8ac334c5ba56d874137797ed23820f">IsParsingComplete</a>() ? result : 0;</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> }</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  </div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <a class="code" href="../../d5/dec/classshaka_1_1media_1_1WebMParserClient.html">WebMParserClient</a>* WebMInfoParser::OnListStart(<span class="keywordtype">int</span> <span class="keywordtype">id</span>) { <span class="keywordflow">return</span> <span class="keyword">this</span>; }</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> <span class="keywordtype">bool</span> WebMInfoParser::OnListEnd(<span class="keywordtype">int</span> <span class="keywordtype">id</span>) {</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == kWebMIdInfo && timecode_scale_ == -1) {</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="comment">// Set timecode scale to default value if it isn't present in</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// the Info element.</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  timecode_scale_ = kWebMDefaultTimecodeScale;</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  }</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> }</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  </div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keywordtype">bool</span> WebMInfoParser::OnUInt(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, int64_t val) {</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">if</span> (<span class="keywordtype">id</span> != kWebMIdTimecodeScale)</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</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="keywordflow">if</span> (timecode_scale_ != -1) {</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  DVLOG(1) << <span class="stringliteral">"Multiple values for id "</span> << std::hex << <span class="keywordtype">id</span> << <span class="stringliteral">" specified"</span>;</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  }</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  </div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  timecode_scale_ = val;</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">return</span> <span class="keyword">true</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>  </div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="keywordtype">bool</span> WebMInfoParser::OnFloat(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, <span class="keywordtype">double</span> val) {</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (<span class="keywordtype">id</span> != kWebMIdDuration) {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  DVLOG(1) << <span class="stringliteral">"Unexpected float for id"</span> << std::hex << id;</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</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="keywordflow">if</span> (duration_ != -1) {</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  DVLOG(1) << <span class="stringliteral">"Multiple values for duration."</span>;</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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>  </div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  duration_ = val;</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">return</span> <span class="keyword">true</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>  </div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="keywordtype">bool</span> WebMInfoParser::OnBinary(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, <span class="keyword">const</span> uint8_t* data, <span class="keywordtype">int</span> size) {</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == kWebMIdDateUTC) {</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span> (size != 8)</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> <span class="keyword">false</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>  int64_t date_in_nanoseconds = 0;</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < size; ++i)</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  date_in_nanoseconds = (date_in_nanoseconds << 8) | data[i];</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  </div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  base::Time::Exploded exploded_epoch;</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  exploded_epoch.year = 2001;</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  exploded_epoch.month = 1;</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  exploded_epoch.day_of_month = 1;</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  exploded_epoch.hour = 0;</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  exploded_epoch.minute = 0;</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  exploded_epoch.second = 0;</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  exploded_epoch.millisecond = 0;</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  date_utc_ = base::Time::FromUTCExploded(exploded_epoch) +</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  base::TimeDelta::FromMicroseconds(date_in_nanoseconds / 1000);</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  }</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> }</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="keywordtype">bool</span> WebMInfoParser::OnString(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, <span class="keyword">const</span> std::string& str) {</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">true</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>  </div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> } <span class="comment">// namespace shaka</span></div>
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</div><!-- fragment --></div><!-- contents -->
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<div class="ttc" id="aclassshaka_1_1media_1_1WebMListParser_html_afc8ac334c5ba56d874137797ed23820f"><div class="ttname"><a href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#afc8ac334c5ba56d874137797ed23820f">shaka::media::WebMListParser::IsParsingComplete</a></div><div class="ttdeci">bool IsParsingComplete() const</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/db6/webm__parser_8cc_source.html#l00828">webm_parser.cc:828</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_1WebMInfoParser_html_ae0b4d37e02d43627b1bc9c64f43ee3f7"><div class="ttname"><a href="../../db/dae/classshaka_1_1media_1_1WebMInfoParser.html#ae0b4d37e02d43627b1bc9c64f43ee3f7">shaka::media::WebMInfoParser::Parse</a></div><div class="ttdeci">int Parse(const uint8_t *buf, int size)</div><div class="ttdef"><b>Definition:</b> <a href="../../df/d7d/webm__info__parser_8cc_source.html#l00024">webm_info_parser.cc:24</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1WebMListParser_html"><div class="ttname"><a href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html">shaka::media::WebMListParser</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d46/webm__parser_8h_source.html#l00054">webm_parser.h:54</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1WebMParserClient_html"><div class="ttname"><a href="../../d5/dec/classshaka_1_1media_1_1WebMParserClient.html">shaka::media::WebMParserClient</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d46/webm__parser_8h_source.html#l00030">webm_parser.h:30</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1WebMListParser_html_acd805b7eb25afcd9a3be2d8d88e3c6af"><div class="ttname"><a href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#acd805b7eb25afcd9a3be2d8d88e3c6af">shaka::media::WebMListParser::Parse</a></div><div class="ttdeci">int Parse(const uint8_t *buf, int size)</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/db6/webm__parser_8cc_source.html#l00744">webm_parser.cc:744</a></div></div>
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