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<div class="title">box_reader.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 (c) 2012 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/mp4/box_reader.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 <inttypes.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 <limits></span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <memory></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 "packager/base/logging.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/base/strings/stringprintf.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "packager/media/formats/mp4/box.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">namespace </span>shaka {</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">namespace </span>mp4 {</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> BoxReader::BoxReader(<span class="keyword">const</span> uint8_t* buf, <span class="keywordtype">size_t</span> size)</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  : BufferReader(buf, size), type_(FOURCC_NULL), scanned_(false) {</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  DCHECK(buf);</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  DCHECK_LT(0u, size);</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> </div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> BoxReader::~BoxReader() {</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keywordflow">if</span> (scanned_ && !children_.empty()) {</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordflow">for</span> (ChildMap::iterator itr = children_.begin(); itr != children_.end();</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  ++itr) {</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  DVLOG(1) << <span class="stringliteral">"Skipping unknown box: "</span> << FourCCToString(itr->first);</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> }</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">// static</span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#ae348922875d67128d2af6d88b692e205"> 36</a></span> <a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html">BoxReader</a>* <a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#ae348922875d67128d2af6d88b692e205">BoxReader::ReadBox</a>(<span class="keyword">const</span> uint8_t* buf,</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> buf_size,</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordtype">bool</span>* err) {</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  std::unique_ptr<BoxReader> reader(<span class="keyword">new</span> <a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html">BoxReader</a>(buf, buf_size));</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordflow">if</span> (!reader->ReadHeader(err))</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">return</span> NULL;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// We don't require the complete box to be available for MDAT box.</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">if</span> (reader->type() == FOURCC_mdat)</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">return</span> reader.release();</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="keywordflow">if</span> (reader->size() <= buf_size)</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">return</span> reader.release();</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordflow">return</span> NULL;</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> </div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">// static</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#a6bafd9cd95a97c4c1475d1806d602ae2"> 54</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#a6bafd9cd95a97c4c1475d1806d602ae2">BoxReader::StartBox</a>(<span class="keyword">const</span> uint8_t* buf,</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> buf_size,</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  FourCC* type,</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  uint64_t* box_size,</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordtype">bool</span>* err) {</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html">BoxReader</a> reader(buf, buf_size);</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">if</span> (!reader.ReadHeader(err))</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  *type = reader.type();</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  *box_size = reader.size();</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</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"><a class="line" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#acc5a55985f95b73ac64c9eab7bd09242"> 67</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#acc5a55985f95b73ac64c9eab7bd09242">BoxReader::ScanChildren</a>() {</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  DCHECK(!scanned_);</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  scanned_ = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">while</span> (pos() < size()) {</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  std::unique_ptr<BoxReader> child(</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keyword">new</span> <a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html">BoxReader</a>(&data()[pos()], size() - pos()));</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordtype">bool</span> err;</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">if</span> (!child->ReadHeader(&err))</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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>  FourCC box_type = child->type();</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordtype">size_t</span> box_size = child->size();</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  children_.insert(std::pair<FourCC, std::unique_ptr<BoxReader>>(</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  box_type, std::move(child)));</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  RCHECK(<a class="code" href="../../d9/d13/classshaka_1_1media_1_1BufferReader.html#a2b15dfcd6ff891a9cb7b76f48d91d15d">SkipBytes</a>(box_size));</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> </div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> }</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
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<div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#a68defcd9be85bbd5cbded3bee86aa03a"> 88</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#a68defcd9be85bbd5cbded3bee86aa03a">BoxReader::ReadChild</a>(<a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html">Box</a>* child) {</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  DCHECK(scanned_);</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  FourCC child_type = child-><a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#ac7c07671ab4c56d19e085570862015ca">BoxType</a>();</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>  ChildMap::iterator itr = children_.find(child_type);</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  RCHECK(itr != children_.end());</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  DVLOG(2) << <span class="stringliteral">"Found a "</span> << FourCCToString(child_type) << <span class="stringliteral">" box."</span>;</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  RCHECK(child-><a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#a209382fcd42e82a896c29e856627ca52">Parse</a>(itr->second.get()));</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  children_.erase(itr);</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"><a class="line" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#aa65236a6b94ac59d5da409412992211c"> 100</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#aa65236a6b94ac59d5da409412992211c">BoxReader::ChildExist</a>(<a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html">Box</a>* child) {</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">return</span> children_.count(child-><a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#ac7c07671ab4c56d19e085570862015ca">BoxType</a>()) > 0;</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"><a class="line" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#a1a4457e9638e8cf3fb30b0031b513cec"> 104</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#a1a4457e9638e8cf3fb30b0031b513cec">BoxReader::TryReadChild</a>(<a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html">Box</a>* child) {</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">if</span> (!children_.count(child-><a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#ac7c07671ab4c56d19e085570862015ca">BoxType</a>()))</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">true</span>;</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">return</span> <a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#a68defcd9be85bbd5cbded3bee86aa03a">ReadChild</a>(child);</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> </div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="keywordtype">bool</span> BoxReader::ReadHeader(<span class="keywordtype">bool</span>* err) {</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  uint64_t size = 0;</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  *err = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../d9/d13/classshaka_1_1media_1_1BufferReader.html#ac98c6631c07300a6b78ec58bfd4ced30">ReadNBytesInto8</a>(&size, <span class="keyword">sizeof</span>(uint32_t)) || !ReadFourCC(&type_))</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span> <span class="keyword">false</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="keywordflow">if</span> (size == 0) {</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="comment">// Boxes that run to EOS are not supported.</span></div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  NOTIMPLEMENTED() << base::StringPrintf(<span class="stringliteral">"Box '%s' run to EOS."</span>,</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  FourCCToString(type_).c_str());</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  *err = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (size == 1) {</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">if</span> (!Read8(&size))</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  }</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// The box should have at least the size of what have been parsed.</span></div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">if</span> (size < pos()) {</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  LOG(ERROR) << base::StringPrintf(<span class="stringliteral">"Box '%s' with size (%"</span> PRIu64</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="stringliteral">") is invalid."</span>,</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  FourCCToString(type_).c_str(),</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  size);</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  *err = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  }</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="comment">// 'mdat' box could have a 64-bit size; other boxes should be very small.</span></div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">if</span> (size > static_cast<uint64_t>(std::numeric_limits<int32_t>::max()) &&</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  type_ != FOURCC_mdat) {</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  LOG(ERROR) << base::StringPrintf(<span class="stringliteral">"Box '%s' size (%"</span> PRIu64</div>
|
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="stringliteral">") is too large."</span>,</div>
|
|
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  FourCCToString(type_).c_str(),</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  size);</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  *err = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  }</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// Note that the pos_ head has advanced to the byte immediately after the</span></div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="comment">// header, which is where we want it.</span></div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  set_size(size);</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> }</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> } <span class="comment">// namespace mp4</span></div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> } <span class="comment">// namespace shaka</span></div>
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<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1Box_html_ac7c07671ab4c56d19e085570862015ca"><div class="ttname"><a href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#ac7c07671ab4c56d19e085570862015ca">shaka::media::mp4::Box::BoxType</a></div><div class="ttdeci">virtual FourCC BoxType() const =0</div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1BoxReader_html_acc5a55985f95b73ac64c9eab7bd09242"><div class="ttname"><a href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#acc5a55985f95b73ac64c9eab7bd09242">shaka::media::mp4::BoxReader::ScanChildren</a></div><div class="ttdeci">bool ScanChildren() WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/df1/box__reader_8cc_source.html#l00067">box_reader.cc:67</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1BufferReader_html_ac98c6631c07300a6b78ec58bfd4ced30"><div class="ttname"><a href="../../d9/d13/classshaka_1_1media_1_1BufferReader.html#ac98c6631c07300a6b78ec58bfd4ced30">shaka::media::BufferReader::ReadNBytesInto8</a></div><div class="ttdeci">bool ReadNBytesInto8(uint64_t *v, size_t num_bytes) WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dbc/buffer__reader_8cc_source.html#l00040">buffer_reader.cc:40</a></div></div>
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<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1Box_html"><div class="ttname"><a href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html">shaka::media::mp4::Box</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d19/box_8h_source.html#l00027">box.h:27</a></div></div>
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|
<div class="ttc" id="classshaka_1_1media_1_1BufferReader_html_a2b15dfcd6ff891a9cb7b76f48d91d15d"><div class="ttname"><a href="../../d9/d13/classshaka_1_1media_1_1BufferReader.html#a2b15dfcd6ff891a9cb7b76f48d91d15d">shaka::media::BufferReader::SkipBytes</a></div><div class="ttdeci">bool SkipBytes(size_t num_bytes) WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dbc/buffer__reader_8cc_source.html#l00065">buffer_reader.cc:65</a></div></div>
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<div class="ttc" id="classshaka_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="classshaka_1_1media_1_1mp4_1_1BoxReader_html_a68defcd9be85bbd5cbded3bee86aa03a"><div class="ttname"><a href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#a68defcd9be85bbd5cbded3bee86aa03a">shaka::media::mp4::BoxReader::ReadChild</a></div><div class="ttdeci">bool ReadChild(Box *child) WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/df1/box__reader_8cc_source.html#l00088">box_reader.cc:88</a></div></div>
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<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1Box_html_a209382fcd42e82a896c29e856627ca52"><div class="ttname"><a href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#a209382fcd42e82a896c29e856627ca52">shaka::media::mp4::Box::Parse</a></div><div class="ttdeci">bool Parse(BoxReader *reader)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d4d/box_8cc_source.html#l00019">box.cc:19</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1BoxReader_html_a1a4457e9638e8cf3fb30b0031b513cec"><div class="ttname"><a href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#a1a4457e9638e8cf3fb30b0031b513cec">shaka::media::mp4::BoxReader::TryReadChild</a></div><div class="ttdeci">bool TryReadChild(Box *child) WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/df1/box__reader_8cc_source.html#l00104">box_reader.cc:104</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1BoxReader_html_a6bafd9cd95a97c4c1475d1806d602ae2"><div class="ttname"><a href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#a6bafd9cd95a97c4c1475d1806d602ae2">shaka::media::mp4::BoxReader::StartBox</a></div><div class="ttdeci">static bool StartBox(const uint8_t *buf, const size_t buf_size, FourCC *type, uint64_t *box_size, bool *err) WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/df1/box__reader_8cc_source.html#l00054">box_reader.cc:54</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1BoxReader_html_aa65236a6b94ac59d5da409412992211c"><div class="ttname"><a href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#aa65236a6b94ac59d5da409412992211c">shaka::media::mp4::BoxReader::ChildExist</a></div><div class="ttdeci">bool ChildExist(Box *child) WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/df1/box__reader_8cc_source.html#l00100">box_reader.cc:100</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1BoxReader_html_ae348922875d67128d2af6d88b692e205"><div class="ttname"><a href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html#ae348922875d67128d2af6d88b692e205">shaka::media::mp4::BoxReader::ReadBox</a></div><div class="ttdeci">static BoxReader * ReadBox(const uint8_t *buf, const size_t buf_size, bool *err)</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/df1/box__reader_8cc_source.html#l00036">box_reader.cc:36</a></div></div>
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