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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> </div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "packager/base/logging.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/base/memory/scoped_ptr.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>edash_packager {</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>  <span class="keyword">delete</span> itr->second;</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> </div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// static</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a029ef2fe387071143c42f50ffd1a16b5"> 37</a></span> <a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html">BoxReader</a>* <a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a029ef2fe387071143c42f50ffd1a16b5">BoxReader::ReadTopLevelBox</a>(<span class="keyword">const</span> uint8_t* buf,</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> buf_size,</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordtype">bool</span>* err) {</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  scoped_ptr<BoxReader> reader(<span class="keyword">new</span> <a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html">BoxReader</a>(buf, buf_size));</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">if</span> (!reader->ReadHeader(err))</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">return</span> NULL;</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</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="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">if</span> (reader->type() == FOURCC_MDAT)</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">return</span> reader.release();</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>  <span class="keywordflow">if</span> (!<a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a8505220e522a9b74a1f40adf3a84d29f">IsValidTopLevelBox</a>(reader->type())) {</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  *err = <span class="keyword">true</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="keywordflow">if</span> (reader->size() <= buf_size)</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">return</span> reader.release();</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> NULL;</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> </div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment">// static</span></div>
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<div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a61fc23759071d1445b81cbcc9564c6a4"> 60</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a61fc23759071d1445b81cbcc9564c6a4">BoxReader::StartTopLevelBox</a>(<span class="keyword">const</span> uint8_t* buf,</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> buf_size,</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  FourCC* type,</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  uint64_t* box_size,</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordtype">bool</span>* err) {</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html">BoxReader</a> reader(buf, buf_size);</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">if</span> (!reader.ReadHeader(err))</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a8505220e522a9b74a1f40adf3a84d29f">IsValidTopLevelBox</a>(reader.type())) {</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  *err = <span class="keyword">true</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>  *type = reader.type();</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  *box_size = reader.size();</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="comment">// static</span></div>
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<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a8505220e522a9b74a1f40adf3a84d29f"> 78</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a8505220e522a9b74a1f40adf3a84d29f">BoxReader::IsValidTopLevelBox</a>(<span class="keyword">const</span> FourCC& type) {</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">switch</span> (type) {</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">case</span> FOURCC_FTYP:</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">case</span> FOURCC_PDIN:</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">case</span> FOURCC_BLOC:</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">case</span> FOURCC_MOOV:</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">case</span> FOURCC_MOOF:</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">case</span> FOURCC_MFRA:</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">case</span> FOURCC_MDAT:</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">case</span> FOURCC_FREE:</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">case</span> FOURCC_SKIP:</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">case</span> FOURCC_META:</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">case</span> FOURCC_MECO:</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">case</span> FOURCC_STYP:</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">case</span> FOURCC_SIDX:</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">case</span> FOURCC_SSIX:</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">case</span> FOURCC_PRFT:</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">default</span>:</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// Hex is used to show nonprintable characters and aid in debugging</span></div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  LOG(ERROR) << <span class="stringliteral">"Unrecognized top-level box type 0x"</span> << std::hex << type;</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</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> </div>
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<div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a6c660acb6864f70ee1125c3f4c809e02"> 103</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a6c660acb6864f70ee1125c3f4c809e02">BoxReader::ScanChildren</a>() {</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  DCHECK(!scanned_);</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  scanned_ = <span class="keyword">true</span>;</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>  <span class="keywordflow">while</span> (pos() < size()) {</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  scoped_ptr<BoxReader> child(</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keyword">new</span> <a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html">BoxReader</a>(&data()[pos()], size() - pos()));</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordtype">bool</span> err;</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">if</span> (!child->ReadHeader(&err))</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">return</span> <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>  FourCC box_type = child->type();</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordtype">size_t</span> box_size = child->size();</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  children_.insert(std::pair<FourCC, BoxReader*>(box_type, child.release()));</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  RCHECK(<a class="code" href="../../d9/d46/classedash__packager_1_1media_1_1BufferReader.html#a2b7075e5a47a823b9f66c0ba702f26bf">SkipBytes</a>(box_size));</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  }</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> }</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
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<div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a480fdd0a597a8b77f7613abb2e8f5629"> 123</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a480fdd0a597a8b77f7613abb2e8f5629">BoxReader::ReadChild</a>(<a class="code" href="../../d7/d8a/structedash__packager_1_1media_1_1mp4_1_1Box.html">Box</a>* child) {</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  DCHECK(scanned_);</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  FourCC child_type = child->BoxType();</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>  ChildMap::iterator itr = children_.find(child_type);</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  RCHECK(itr != children_.end());</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</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="l00130"></a><span class="lineno"> 130</span>  RCHECK(child-><a class="code" href="../../d7/d8a/structedash__packager_1_1media_1_1mp4_1_1Box.html#a7b62a3983faafbea54a32486df60ed96">Parse</a>(itr->second));</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keyword">delete</span> itr->second;</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  children_.erase(itr);</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> }</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div>
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<div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a5bc71875b0e8fe70cba17e2fe6f974fa"> 136</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a5bc71875b0e8fe70cba17e2fe6f974fa">BoxReader::ChildExist</a>(<a class="code" href="../../d7/d8a/structedash__packager_1_1media_1_1mp4_1_1Box.html">Box</a>* child) {</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">return</span> children_.count(child->BoxType()) > 0;</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> }</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div>
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<div class="line"><a name="l00140"></a><span class="lineno"><a class="line" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#ae697ff0b40b4aa9feecb45d303f8f6bc"> 140</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#ae697ff0b40b4aa9feecb45d303f8f6bc">BoxReader::TryReadChild</a>(<a class="code" href="../../d7/d8a/structedash__packager_1_1media_1_1mp4_1_1Box.html">Box</a>* child) {</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">if</span> (!children_.count(child->BoxType()))</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">return</span> <a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a480fdd0a597a8b77f7613abb2e8f5629">ReadChild</a>(child);</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> }</div>
|
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="keywordtype">bool</span> BoxReader::ReadHeader(<span class="keywordtype">bool</span>* err) {</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  uint64_t size = 0;</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  *err = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../d9/d46/classedash__packager_1_1media_1_1BufferReader.html#ac21a2b3a9ed6b2ad20247b6f653d8a02">ReadNBytesInto8</a>(&size, <span class="keyword">sizeof</span>(uint32_t)) || !ReadFourCC(&type_))</div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div>
|
|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">if</span> (size == 0) {</div>
|
|
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="comment">// Boxes that run to EOS are not supported.</span></div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  NOTIMPLEMENTED() << base::StringPrintf(<span class="stringliteral">"Box '%s' run to EOS."</span>,</div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  FourCCToString(type_).c_str());</div>
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  *err = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (size == 1) {</div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">if</span> (!Read8(&size))</div>
|
|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  }</div>
|
|
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
|
|
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="comment">// The box should have at least the size of what have been parsed.</span></div>
|
|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">if</span> (size < pos()) {</div>
|
|
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  LOG(ERROR) << base::StringPrintf(<span class="stringliteral">"Box '%s' with size (%"</span> PRIu64</div>
|
|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="stringliteral">") is invalid."</span>,</div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  FourCCToString(type_).c_str(),</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  size);</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  *err = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</div>
|
|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div>
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="comment">// 'mdat' box could have a 64-bit size; other boxes should be very small.</span></div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span> (size > static_cast<uint64_t>(std::numeric_limits<int32_t>::max()) &&</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  type_ != FOURCC_MDAT) {</div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  LOG(ERROR) << base::StringPrintf(<span class="stringliteral">"Box '%s' size (%"</span> PRIu64</div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="stringliteral">") is too large."</span>,</div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  FourCCToString(type_).c_str(),</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  size);</div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  *err = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  }</div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="comment">// Note that the pos_ head has advanced to the byte immediately after the</span></div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="comment">// header, which is where we want it.</span></div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  set_size(size);</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> }</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> } <span class="comment">// namespace mp4</span></div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> } <span class="comment">// namespace media</span></div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> } <span class="comment">// namespace edash_packager</span></div>
|
|
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1BoxReader_html_a480fdd0a597a8b77f7613abb2e8f5629"><div class="ttname"><a href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a480fdd0a597a8b77f7613abb2e8f5629">edash_packager::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#l00123">box_reader.cc:123</a></div></div>
|
|
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1BoxReader_html_a029ef2fe387071143c42f50ffd1a16b5"><div class="ttname"><a href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a029ef2fe387071143c42f50ffd1a16b5">edash_packager::media::mp4::BoxReader::ReadTopLevelBox</a></div><div class="ttdeci">static BoxReader * ReadTopLevelBox(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#l00037">box_reader.cc:37</a></div></div>
|
|
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1BoxReader_html_ae697ff0b40b4aa9feecb45d303f8f6bc"><div class="ttname"><a href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#ae697ff0b40b4aa9feecb45d303f8f6bc">edash_packager::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#l00140">box_reader.cc:140</a></div></div>
|
|
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1BoxReader_html_a5bc71875b0e8fe70cba17e2fe6f974fa"><div class="ttname"><a href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a5bc71875b0e8fe70cba17e2fe6f974fa">edash_packager::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#l00136">box_reader.cc:136</a></div></div>
|
|
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1BoxReader_html_a8505220e522a9b74a1f40adf3a84d29f"><div class="ttname"><a href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a8505220e522a9b74a1f40adf3a84d29f">edash_packager::media::mp4::BoxReader::IsValidTopLevelBox</a></div><div class="ttdeci">static bool IsValidTopLevelBox(const FourCC &type)</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/df1/box__reader_8cc_source.html#l00078">box_reader.cc:78</a></div></div>
|
|
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1BoxReader_html_a6c660acb6864f70ee1125c3f4c809e02"><div class="ttname"><a href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a6c660acb6864f70ee1125c3f4c809e02">edash_packager::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#l00103">box_reader.cc:103</a></div></div>
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|
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1BoxReader_html_a61fc23759071d1445b81cbcc9564c6a4"><div class="ttname"><a href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a61fc23759071d1445b81cbcc9564c6a4">edash_packager::media::mp4::BoxReader::StartTopLevelBox</a></div><div class="ttdeci">static bool StartTopLevelBox(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#l00060">box_reader.cc:60</a></div></div>
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|
<div class="ttc" id="classedash__packager_1_1media_1_1BufferReader_html_a2b7075e5a47a823b9f66c0ba702f26bf"><div class="ttname"><a href="../../d9/d46/classedash__packager_1_1media_1_1BufferReader.html#a2b7075e5a47a823b9f66c0ba702f26bf">edash_packager::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#l00056">buffer_reader.cc:56</a></div></div>
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|
<div class="ttc" id="structedash__packager_1_1media_1_1mp4_1_1Box_html_a7b62a3983faafbea54a32486df60ed96"><div class="ttname"><a href="../../d7/d8a/structedash__packager_1_1media_1_1mp4_1_1Box.html#a7b62a3983faafbea54a32486df60ed96">edash_packager::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="structedash__packager_1_1media_1_1mp4_1_1Box_html"><div class="ttname"><a href="../../d7/d8a/structedash__packager_1_1media_1_1mp4_1_1Box.html">edash_packager::media::mp4::Box</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d19/box_8h_source.html#l00028">box.h:28</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1BufferReader_html_ac21a2b3a9ed6b2ad20247b6f653d8a02"><div class="ttname"><a href="../../d9/d46/classedash__packager_1_1media_1_1BufferReader.html#ac21a2b3a9ed6b2ad20247b6f653d8a02">edash_packager::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="classedash__packager_1_1media_1_1mp4_1_1BoxReader_html"><div class="ttname"><a href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html">edash_packager::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#l00024">box_reader.h:24</a></div></div>
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