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<div class="title">webm_parser.cc</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2014 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_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="comment">// This file contains code to parse WebM file elements. It was created</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// from information in the Matroska spec.</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// http://www.matroska.org/technical/specs/index.html</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// This file contains code for encrypted WebM. Current WebM</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// encrypted request for comments specification is here</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// http://wiki.webmproject.org/encryption/webm-encryption-rfc</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <limits></span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "packager/base/logging.h"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "packager/base/numerics/safe_conversions.h"</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include "packager/media/formats/webm/webm_constants.h"</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">namespace </span>shaka {</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">enum</span> ElementType {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  UNKNOWN,</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  LIST, <span class="comment">// Referred to as Master Element in the Matroska spec.</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  UINT,</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  FLOAT,</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  BINARY,</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  STRING,</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  SKIP,</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> <span class="keyword">struct </span>ElementIdInfo {</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  ElementType type_;</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordtype">int</span> id_;</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> <span class="keyword">struct </span>ListElementInfo {</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordtype">int</span> id_;</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordtype">int</span> level_;</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keyword">const</span> ElementIdInfo* id_info_;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordtype">int</span> id_info_count_;</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> </div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment">// The following are tables indicating what IDs are valid sub-elements</span></div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// of particular elements. If an element is encountered that doesn't</span></div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment">// appear in the list, a parsing error is signalled. Some elements are</span></div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment">// marked as SKIP because they are valid, but we don't care about them</span></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment">// right now.</span></div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kEBMLHeaderIds[] = {</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  {UINT, kWebMIdEBMLVersion},</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  {UINT, kWebMIdEBMLReadVersion},</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  {UINT, kWebMIdEBMLMaxIDLength},</div>
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|
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  {UINT, kWebMIdEBMLMaxSizeLength},</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  {STRING, kWebMIdDocType},</div>
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|
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  {UINT, kWebMIdDocTypeVersion},</div>
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|
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  {UINT, kWebMIdDocTypeReadVersion},</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> </div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kSegmentIds[] = {</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  {LIST, kWebMIdSeekHead},</div>
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|
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  {LIST, kWebMIdInfo},</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  {LIST, kWebMIdCluster},</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {LIST, kWebMIdTracks},</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  {LIST, kWebMIdCues},</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  {LIST, kWebMIdAttachments},</div>
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|
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  {LIST, kWebMIdChapters},</div>
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|
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  {LIST, kWebMIdTags},</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</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="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kSeekHeadIds[] = {</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  {LIST, kWebMIdSeek},</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> };</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kSeekIds[] = {</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  {BINARY, kWebMIdSeekID},</div>
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|
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  {UINT, kWebMIdSeekPosition},</div>
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|
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> };</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kInfoIds[] = {</div>
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|
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  {BINARY, kWebMIdSegmentUID},</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  {STRING, kWebMIdSegmentFilename},</div>
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|
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  {BINARY, kWebMIdPrevUID},</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  {STRING, kWebMIdPrevFilename},</div>
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|
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  {BINARY, kWebMIdNextUID},</div>
|
|
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  {STRING, kWebMIdNextFilename},</div>
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|
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  {BINARY, kWebMIdSegmentFamily},</div>
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|
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  {LIST, kWebMIdChapterTranslate},</div>
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|
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  {UINT, kWebMIdTimecodeScale},</div>
|
|
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  {FLOAT, kWebMIdDuration},</div>
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|
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  {BINARY, kWebMIdDateUTC},</div>
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|
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  {STRING, kWebMIdTitle},</div>
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|
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  {STRING, kWebMIdMuxingApp},</div>
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|
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  {STRING, kWebMIdWritingApp},</div>
|
|
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> };</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="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kChapterTranslateIds[] = {</div>
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|
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  {UINT, kWebMIdChapterTranslateEditionUID},</div>
|
|
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  {UINT, kWebMIdChapterTranslateCodec},</div>
|
|
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  {BINARY, kWebMIdChapterTranslateID},</div>
|
|
<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"> 103</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kClusterIds[] = {</div>
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|
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  {BINARY, kWebMIdSimpleBlock},</div>
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|
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  {UINT, kWebMIdTimecode},</div>
|
|
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  {LIST, kWebMIdSilentTracks},</div>
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|
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  {UINT, kWebMIdPosition},</div>
|
|
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  {UINT, kWebMIdPrevSize},</div>
|
|
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  {LIST, kWebMIdBlockGroup},</div>
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|
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> };</div>
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|
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
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|
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kSilentTracksIds[] = {</div>
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|
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  {UINT, kWebMIdSilentTrackNumber},</div>
|
|
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> };</div>
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|
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kBlockGroupIds[] = {</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  {BINARY, kWebMIdBlock},</div>
|
|
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  {LIST, kWebMIdBlockAdditions},</div>
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|
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  {UINT, kWebMIdBlockDuration},</div>
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|
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  {UINT, kWebMIdReferencePriority},</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  {BINARY, kWebMIdReferenceBlock},</div>
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|
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  {BINARY, kWebMIdCodecState},</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  {BINARY, kWebMIdDiscardPadding},</div>
|
|
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  {LIST, kWebMIdSlices},</div>
|
|
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> };</div>
|
|
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
|
|
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kBlockAdditionsIds[] = {</div>
|
|
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  {LIST, kWebMIdBlockMore},</div>
|
|
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> };</div>
|
|
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div>
|
|
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kBlockMoreIds[] = {</div>
|
|
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  {UINT, kWebMIdBlockAddID},</div>
|
|
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  {BINARY, kWebMIdBlockAdditional},</div>
|
|
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> };</div>
|
|
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div>
|
|
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kSlicesIds[] = {</div>
|
|
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  {LIST, kWebMIdTimeSlice},</div>
|
|
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> };</div>
|
|
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div>
|
|
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kTimeSliceIds[] = {</div>
|
|
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  {UINT, kWebMIdLaceNumber},</div>
|
|
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> };</div>
|
|
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
|
|
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kTracksIds[] = {</div>
|
|
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  {LIST, kWebMIdTrackEntry},</div>
|
|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> };</div>
|
|
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div>
|
|
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kTrackEntryIds[] = {</div>
|
|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  {UINT, kWebMIdTrackNumber},</div>
|
|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  {BINARY, kWebMIdTrackUID},</div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  {UINT, kWebMIdTrackType},</div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  {UINT, kWebMIdFlagEnabled},</div>
|
|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  {UINT, kWebMIdFlagDefault},</div>
|
|
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  {UINT, kWebMIdFlagForced},</div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  {UINT, kWebMIdFlagLacing},</div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  {UINT, kWebMIdMinCache},</div>
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  {UINT, kWebMIdMaxCache},</div>
|
|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  {UINT, kWebMIdDefaultDuration},</div>
|
|
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  {FLOAT, kWebMIdTrackTimecodeScale},</div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  {UINT, kWebMIdMaxBlockAdditionId},</div>
|
|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  {STRING, kWebMIdName},</div>
|
|
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  {STRING, kWebMIdLanguage},</div>
|
|
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  {STRING, kWebMIdCodecID},</div>
|
|
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  {BINARY, kWebMIdCodecPrivate},</div>
|
|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  {STRING, kWebMIdCodecName},</div>
|
|
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  {UINT, kWebMIdAttachmentLink},</div>
|
|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  {UINT, kWebMIdCodecDecodeAll},</div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  {UINT, kWebMIdTrackOverlay},</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  {UINT, kWebMIdCodecDelay},</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  {UINT, kWebMIdSeekPreRoll},</div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  {LIST, kWebMIdTrackTranslate},</div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  {LIST, kWebMIdVideo},</div>
|
|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  {LIST, kWebMIdAudio},</div>
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  {LIST, kWebMIdTrackOperation},</div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  {LIST, kWebMIdContentEncodings},</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> };</div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kTrackTranslateIds[] = {</div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  {UINT, kWebMIdTrackTranslateEditionUID},</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  {UINT, kWebMIdTrackTranslateCodec},</div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  {BINARY, kWebMIdTrackTranslateTrackID},</div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</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> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kVideoIds[] = {</div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  {UINT, kWebMIdFlagInterlaced},</div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  {UINT, kWebMIdStereoMode},</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  {UINT, kWebMIdAlphaMode},</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  {UINT, kWebMIdPixelWidth},</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  {UINT, kWebMIdPixelHeight},</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  {UINT, kWebMIdPixelCropBottom},</div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  {UINT, kWebMIdPixelCropTop},</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  {UINT, kWebMIdPixelCropLeft},</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  {UINT, kWebMIdPixelCropRight},</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  {UINT, kWebMIdDisplayWidth},</div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  {UINT, kWebMIdDisplayHeight},</div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  {UINT, kWebMIdDisplayUnit},</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  {UINT, kWebMIdAspectRatioType},</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  {BINARY, kWebMIdColorSpace},</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  {FLOAT, kWebMIdFrameRate},</div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> };</div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kAudioIds[] = {</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  {FLOAT, kWebMIdSamplingFrequency},</div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  {FLOAT, kWebMIdOutputSamplingFrequency},</div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  {UINT, kWebMIdChannels},</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  {UINT, kWebMIdBitDepth},</div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> };</div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> </div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kTrackOperationIds[] = {</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  {LIST, kWebMIdTrackCombinePlanes},</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  {LIST, kWebMIdJoinBlocks},</div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> };</div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kTrackCombinePlanesIds[] = {</div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  {LIST, kWebMIdTrackPlane},</div>
|
|
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> };</div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> </div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kTrackPlaneIds[] = {</div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  {UINT, kWebMIdTrackPlaneUID},</div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  {UINT, kWebMIdTrackPlaneType},</div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> };</div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kJoinBlocksIds[] = {</div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  {UINT, kWebMIdTrackJoinUID},</div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> };</div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kContentEncodingsIds[] = {</div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  {LIST, kWebMIdContentEncoding},</div>
|
|
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> };</div>
|
|
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div>
|
|
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kContentEncodingIds[] = {</div>
|
|
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  {UINT, kWebMIdContentEncodingOrder},</div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  {UINT, kWebMIdContentEncodingScope},</div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  {UINT, kWebMIdContentEncodingType},</div>
|
|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  {LIST, kWebMIdContentCompression},</div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  {LIST, kWebMIdContentEncryption},</div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> };</div>
|
|
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div>
|
|
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kContentCompressionIds[] = {</div>
|
|
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  {UINT, kWebMIdContentCompAlgo},</div>
|
|
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  {BINARY, kWebMIdContentCompSettings},</div>
|
|
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> };</div>
|
|
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div>
|
|
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kContentEncryptionIds[] = {</div>
|
|
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  {LIST, kWebMIdContentEncAESSettings},</div>
|
|
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  {UINT, kWebMIdContentEncAlgo},</div>
|
|
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  {BINARY, kWebMIdContentEncKeyID},</div>
|
|
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  {BINARY, kWebMIdContentSignature},</div>
|
|
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  {BINARY, kWebMIdContentSigKeyID},</div>
|
|
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  {UINT, kWebMIdContentSigAlgo},</div>
|
|
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  {UINT, kWebMIdContentSigHashAlgo},</div>
|
|
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> };</div>
|
|
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div>
|
|
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kContentEncAESSettingsIds[] = {</div>
|
|
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  {UINT, kWebMIdAESSettingsCipherMode},</div>
|
|
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> };</div>
|
|
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> </div>
|
|
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kCuesIds[] = {</div>
|
|
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  {LIST, kWebMIdCuePoint},</div>
|
|
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> };</div>
|
|
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> </div>
|
|
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kCuePointIds[] = {</div>
|
|
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  {UINT, kWebMIdCueTime},</div>
|
|
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  {LIST, kWebMIdCueTrackPositions},</div>
|
|
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> };</div>
|
|
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> </div>
|
|
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kCueTrackPositionsIds[] = {</div>
|
|
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  {UINT, kWebMIdCueTrack},</div>
|
|
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  {UINT, kWebMIdCueClusterPosition},</div>
|
|
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  {UINT, kWebMIdCueBlockNumber},</div>
|
|
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  {UINT, kWebMIdCueCodecState},</div>
|
|
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  {LIST, kWebMIdCueReference},</div>
|
|
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> };</div>
|
|
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div>
|
|
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kCueReferenceIds[] = {</div>
|
|
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  {UINT, kWebMIdCueRefTime},</div>
|
|
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> };</div>
|
|
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> </div>
|
|
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kAttachmentsIds[] = {</div>
|
|
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  {LIST, kWebMIdAttachedFile},</div>
|
|
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> };</div>
|
|
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> </div>
|
|
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kAttachedFileIds[] = {</div>
|
|
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  {STRING, kWebMIdFileDescription},</div>
|
|
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  {STRING, kWebMIdFileName},</div>
|
|
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  {STRING, kWebMIdFileMimeType},</div>
|
|
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  {BINARY, kWebMIdFileData},</div>
|
|
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  {UINT, kWebMIdFileUID},</div>
|
|
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> };</div>
|
|
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> </div>
|
|
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kChaptersIds[] = {</div>
|
|
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  {LIST, kWebMIdEditionEntry},</div>
|
|
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> };</div>
|
|
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> </div>
|
|
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kEditionEntryIds[] = {</div>
|
|
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  {UINT, kWebMIdEditionUID},</div>
|
|
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  {UINT, kWebMIdEditionFlagHidden},</div>
|
|
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  {UINT, kWebMIdEditionFlagDefault},</div>
|
|
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  {UINT, kWebMIdEditionFlagOrdered},</div>
|
|
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  {LIST, kWebMIdChapterAtom},</div>
|
|
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span> };</div>
|
|
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span> </div>
|
|
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kChapterAtomIds[] = {</div>
|
|
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  {UINT, kWebMIdChapterUID},</div>
|
|
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  {UINT, kWebMIdChapterTimeStart},</div>
|
|
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  {UINT, kWebMIdChapterTimeEnd},</div>
|
|
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  {UINT, kWebMIdChapterFlagHidden},</div>
|
|
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  {UINT, kWebMIdChapterFlagEnabled},</div>
|
|
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  {BINARY, kWebMIdChapterSegmentUID},</div>
|
|
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  {UINT, kWebMIdChapterSegmentEditionUID},</div>
|
|
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  {UINT, kWebMIdChapterPhysicalEquiv},</div>
|
|
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  {LIST, kWebMIdChapterTrack},</div>
|
|
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  {LIST, kWebMIdChapterDisplay},</div>
|
|
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  {LIST, kWebMIdChapProcess},</div>
|
|
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> };</div>
|
|
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> </div>
|
|
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kChapterTrackIds[] = {</div>
|
|
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  {UINT, kWebMIdChapterTrackNumber},</div>
|
|
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> };</div>
|
|
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span> </div>
|
|
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kChapterDisplayIds[] = {</div>
|
|
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  {STRING, kWebMIdChapString},</div>
|
|
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  {STRING, kWebMIdChapLanguage},</div>
|
|
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  {STRING, kWebMIdChapCountry},</div>
|
|
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span> };</div>
|
|
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> </div>
|
|
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kChapProcessIds[] = {</div>
|
|
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  {UINT, kWebMIdChapProcessCodecID},</div>
|
|
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  {BINARY, kWebMIdChapProcessPrivate},</div>
|
|
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  {LIST, kWebMIdChapProcessCommand},</div>
|
|
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span> };</div>
|
|
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span> </div>
|
|
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kChapProcessCommandIds[] = {</div>
|
|
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  {UINT, kWebMIdChapProcessTime},</div>
|
|
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  {BINARY, kWebMIdChapProcessData},</div>
|
|
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> };</div>
|
|
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> </div>
|
|
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kTagsIds[] = {</div>
|
|
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  {LIST, kWebMIdTag},</div>
|
|
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span> };</div>
|
|
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span> </div>
|
|
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kTagIds[] = {</div>
|
|
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  {LIST, kWebMIdTargets},</div>
|
|
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  {LIST, kWebMIdSimpleTag},</div>
|
|
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span> };</div>
|
|
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> </div>
|
|
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kTargetsIds[] = {</div>
|
|
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  {UINT, kWebMIdTargetTypeValue},</div>
|
|
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  {STRING, kWebMIdTargetType},</div>
|
|
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  {UINT, kWebMIdTagTrackUID},</div>
|
|
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  {UINT, kWebMIdTagEditionUID},</div>
|
|
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  {UINT, kWebMIdTagChapterUID},</div>
|
|
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  {UINT, kWebMIdTagAttachmentUID},</div>
|
|
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> };</div>
|
|
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span> </div>
|
|
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> <span class="keyword">static</span> <span class="keyword">const</span> ElementIdInfo kSimpleTagIds[] = {</div>
|
|
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  {STRING, kWebMIdTagName},</div>
|
|
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  {STRING, kWebMIdTagLanguage},</div>
|
|
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  {UINT, kWebMIdTagDefault},</div>
|
|
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  {STRING, kWebMIdTagString},</div>
|
|
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  {BINARY, kWebMIdTagBinary},</div>
|
|
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span> };</div>
|
|
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span> </div>
|
|
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span> <span class="preprocessor">#define LIST_ELEMENT_INFO(id, level, id_info) \</span></div>
|
|
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span> <span class="preprocessor"> { (id), (level), (id_info), arraysize(id_info) }</span></div>
|
|
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="preprocessor"></span></div>
|
|
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> <span class="keyword">static</span> <span class="keyword">const</span> ListElementInfo kListElementInfo[] = {</div>
|
|
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  LIST_ELEMENT_INFO(kWebMIdCluster, 1, kClusterIds),</div>
|
|
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  LIST_ELEMENT_INFO(kWebMIdEBMLHeader, 0, kEBMLHeaderIds),</div>
|
|
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  LIST_ELEMENT_INFO(kWebMIdSegment, 0, kSegmentIds),</div>
|
|
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  LIST_ELEMENT_INFO(kWebMIdSeekHead, 1, kSeekHeadIds),</div>
|
|
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  LIST_ELEMENT_INFO(kWebMIdSeek, 2, kSeekIds),</div>
|
|
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  LIST_ELEMENT_INFO(kWebMIdInfo, 1, kInfoIds),</div>
|
|
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  LIST_ELEMENT_INFO(kWebMIdChapterTranslate, 2, kChapterTranslateIds),</div>
|
|
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  LIST_ELEMENT_INFO(kWebMIdSilentTracks, 2, kSilentTracksIds),</div>
|
|
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  LIST_ELEMENT_INFO(kWebMIdBlockGroup, 2, kBlockGroupIds),</div>
|
|
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  LIST_ELEMENT_INFO(kWebMIdBlockAdditions, 3, kBlockAdditionsIds),</div>
|
|
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  LIST_ELEMENT_INFO(kWebMIdBlockMore, 4, kBlockMoreIds),</div>
|
|
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  LIST_ELEMENT_INFO(kWebMIdSlices, 3, kSlicesIds),</div>
|
|
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  LIST_ELEMENT_INFO(kWebMIdTimeSlice, 4, kTimeSliceIds),</div>
|
|
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  LIST_ELEMENT_INFO(kWebMIdTracks, 1, kTracksIds),</div>
|
|
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  LIST_ELEMENT_INFO(kWebMIdTrackEntry, 2, kTrackEntryIds),</div>
|
|
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  LIST_ELEMENT_INFO(kWebMIdTrackTranslate, 3, kTrackTranslateIds),</div>
|
|
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  LIST_ELEMENT_INFO(kWebMIdVideo, 3, kVideoIds),</div>
|
|
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  LIST_ELEMENT_INFO(kWebMIdAudio, 3, kAudioIds),</div>
|
|
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  LIST_ELEMENT_INFO(kWebMIdTrackOperation, 3, kTrackOperationIds),</div>
|
|
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  LIST_ELEMENT_INFO(kWebMIdTrackCombinePlanes, 4, kTrackCombinePlanesIds),</div>
|
|
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  LIST_ELEMENT_INFO(kWebMIdTrackPlane, 5, kTrackPlaneIds),</div>
|
|
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  LIST_ELEMENT_INFO(kWebMIdJoinBlocks, 4, kJoinBlocksIds),</div>
|
|
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  LIST_ELEMENT_INFO(kWebMIdContentEncodings, 3, kContentEncodingsIds),</div>
|
|
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  LIST_ELEMENT_INFO(kWebMIdContentEncoding, 4, kContentEncodingIds),</div>
|
|
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  LIST_ELEMENT_INFO(kWebMIdContentCompression, 5, kContentCompressionIds),</div>
|
|
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  LIST_ELEMENT_INFO(kWebMIdContentEncryption, 5, kContentEncryptionIds),</div>
|
|
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  LIST_ELEMENT_INFO(kWebMIdContentEncAESSettings, 6, kContentEncAESSettingsIds),</div>
|
|
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  LIST_ELEMENT_INFO(kWebMIdCues, 1, kCuesIds),</div>
|
|
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  LIST_ELEMENT_INFO(kWebMIdCuePoint, 2, kCuePointIds),</div>
|
|
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  LIST_ELEMENT_INFO(kWebMIdCueTrackPositions, 3, kCueTrackPositionsIds),</div>
|
|
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  LIST_ELEMENT_INFO(kWebMIdCueReference, 4, kCueReferenceIds),</div>
|
|
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  LIST_ELEMENT_INFO(kWebMIdAttachments, 1, kAttachmentsIds),</div>
|
|
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  LIST_ELEMENT_INFO(kWebMIdAttachedFile, 2, kAttachedFileIds),</div>
|
|
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  LIST_ELEMENT_INFO(kWebMIdChapters, 1, kChaptersIds),</div>
|
|
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  LIST_ELEMENT_INFO(kWebMIdEditionEntry, 2, kEditionEntryIds),</div>
|
|
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  LIST_ELEMENT_INFO(kWebMIdChapterAtom, 3, kChapterAtomIds),</div>
|
|
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  LIST_ELEMENT_INFO(kWebMIdChapterTrack, 4, kChapterTrackIds),</div>
|
|
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  LIST_ELEMENT_INFO(kWebMIdChapterDisplay, 4, kChapterDisplayIds),</div>
|
|
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  LIST_ELEMENT_INFO(kWebMIdChapProcess, 4, kChapProcessIds),</div>
|
|
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  LIST_ELEMENT_INFO(kWebMIdChapProcessCommand, 5, kChapProcessCommandIds),</div>
|
|
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  LIST_ELEMENT_INFO(kWebMIdTags, 1, kTagsIds),</div>
|
|
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  LIST_ELEMENT_INFO(kWebMIdTag, 2, kTagIds),</div>
|
|
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  LIST_ELEMENT_INFO(kWebMIdTargets, 3, kTargetsIds),</div>
|
|
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  LIST_ELEMENT_INFO(kWebMIdSimpleTag, 3, kSimpleTagIds),</div>
|
|
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span> };</div>
|
|
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span> </div>
|
|
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span> <span class="comment">// Parses an element header id or size field. These fields are variable length</span></div>
|
|
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span> <span class="comment">// encoded. The first byte indicates how many bytes the field occupies.</span></div>
|
|
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span> <span class="comment">// |buf| - The buffer to parse.</span></div>
|
|
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span> <span class="comment">// |size| - The number of bytes in |buf|</span></div>
|
|
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span> <span class="comment">// |max_bytes| - The maximum number of bytes the field can be. ID fields</span></div>
|
|
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> <span class="comment">// set this to 4 & element size fields set this to 8. If the</span></div>
|
|
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span> <span class="comment">// first byte indicates a larger field size than this it is a</span></div>
|
|
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span> <span class="comment">// parser error.</span></div>
|
|
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span> <span class="comment">// |mask_first_byte| - For element size fields the field length encoding bits</span></div>
|
|
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span> <span class="comment">// need to be masked off. This parameter is true for</span></div>
|
|
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span> <span class="comment">// element size fields and is false for ID field values.</span></div>
|
|
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span> <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span> <span class="comment">// Returns: The number of bytes parsed on success. -1 on error.</span></div>
|
|
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span> <span class="keyword">static</span> <span class="keywordtype">int</span> ParseWebMElementHeaderField(<span class="keyword">const</span> uint8_t* buf,</div>
|
|
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="keywordtype">int</span> size,</div>
|
|
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keywordtype">int</span> max_bytes,</div>
|
|
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <span class="keywordtype">bool</span> mask_first_byte,</div>
|
|
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  int64_t* num) {</div>
|
|
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  DCHECK(buf);</div>
|
|
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  DCHECK(num);</div>
|
|
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span> </div>
|
|
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="keywordflow">if</span> (size < 0)</div>
|
|
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span> </div>
|
|
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="keywordflow">if</span> (size == 0)</div>
|
|
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keywordflow">return</span> 0;</div>
|
|
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span> </div>
|
|
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keywordtype">int</span> mask = 0x80;</div>
|
|
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  uint8_t ch = buf[0];</div>
|
|
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="keywordtype">int</span> extra_bytes = -1;</div>
|
|
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keywordtype">bool</span> all_ones = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < max_bytes; ++i) {</div>
|
|
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="keywordflow">if</span> ((ch & mask) != 0) {</div>
|
|
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  mask = ~mask & 0xff;</div>
|
|
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  *num = mask_first_byte ? ch & mask : ch;</div>
|
|
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  all_ones = (ch & mask) == mask;</div>
|
|
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  extra_bytes = i;</div>
|
|
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  }</div>
|
|
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  mask = 0x80 | mask >> 1;</div>
|
|
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  }</div>
|
|
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span> </div>
|
|
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="keywordflow">if</span> (extra_bytes == -1)</div>
|
|
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span> </div>
|
|
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="comment">// Return 0 if we need more data.</span></div>
|
|
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">if</span> ((1 + extra_bytes) > size)</div>
|
|
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="keywordflow">return</span> 0;</div>
|
|
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span> </div>
|
|
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordtype">int</span> bytes_used = 1;</div>
|
|
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span> </div>
|
|
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < extra_bytes; ++i) {</div>
|
|
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  ch = buf[bytes_used++];</div>
|
|
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  all_ones &= (ch == 0xff);</div>
|
|
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  *num = (*num << 8) | ch;</div>
|
|
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  }</div>
|
|
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span> </div>
|
|
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="keywordflow">if</span> (all_ones)</div>
|
|
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  *num = std::numeric_limits<int64_t>::max();</div>
|
|
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span> </div>
|
|
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="keywordflow">return</span> bytes_used;</div>
|
|
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span> }</div>
|
|
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span> </div>
|
|
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span> <span class="keywordtype">int</span> WebMParseElementHeader(<span class="keyword">const</span> uint8_t* buf,</div>
|
|
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="keywordtype">int</span> size,</div>
|
|
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="keywordtype">int</span>* <span class="keywordtype">id</span>,</div>
|
|
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  int64_t* element_size) {</div>
|
|
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  DCHECK(buf);</div>
|
|
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  DCHECK_GE(size, 0);</div>
|
|
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  DCHECK(<span class="keywordtype">id</span>);</div>
|
|
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  DCHECK(element_size);</div>
|
|
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span> </div>
|
|
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="keywordflow">if</span> (size == 0)</div>
|
|
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="keywordflow">return</span> 0;</div>
|
|
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span> </div>
|
|
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  int64_t tmp = 0;</div>
|
|
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="keywordtype">int</span> num_id_bytes = ParseWebMElementHeaderField(buf, size, 4, <span class="keyword">false</span>, &tmp);</div>
|
|
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span> </div>
|
|
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="keywordflow">if</span> (num_id_bytes <= 0)</div>
|
|
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="keywordflow">return</span> num_id_bytes;</div>
|
|
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span> </div>
|
|
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="keywordflow">if</span> (tmp == std::numeric_limits<int64_t>::max())</div>
|
|
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  tmp = kWebMReservedId;</div>
|
|
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span> </div>
|
|
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  *<span class="keywordtype">id</span> = <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(tmp);</div>
|
|
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span> </div>
|
|
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <span class="keywordtype">int</span> num_size_bytes = ParseWebMElementHeaderField(buf + num_id_bytes,</div>
|
|
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  size - num_id_bytes,</div>
|
|
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  8, <span class="keyword">true</span>, &tmp);</div>
|
|
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span> </div>
|
|
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="keywordflow">if</span> (num_size_bytes <= 0)</div>
|
|
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="keywordflow">return</span> num_size_bytes;</div>
|
|
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span> </div>
|
|
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="keywordflow">if</span> (tmp == std::numeric_limits<int64_t>::max())</div>
|
|
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  tmp = kWebMUnknownSize;</div>
|
|
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span> </div>
|
|
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  *element_size = tmp;</div>
|
|
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  DVLOG(3) << <span class="stringliteral">"WebMParseElementHeader() : id "</span> << std::hex << *<span class="keywordtype">id</span> << std::dec</div>
|
|
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  << <span class="stringliteral">" size "</span> << *element_size;</div>
|
|
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="keywordflow">return</span> num_id_bytes + num_size_bytes;</div>
|
|
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span> }</div>
|
|
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span> </div>
|
|
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span> <span class="comment">// Finds ElementType for a specific ID.</span></div>
|
|
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span> <span class="keyword">static</span> ElementType FindIdType(<span class="keywordtype">int</span> <span class="keywordtype">id</span>,</div>
|
|
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <span class="keyword">const</span> ElementIdInfo* id_info,</div>
|
|
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  <span class="keywordtype">int</span> id_info_count) {</div>
|
|
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span> </div>
|
|
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="comment">// Check for global element IDs that can be anywhere.</span></div>
|
|
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == kWebMIdVoid || <span class="keywordtype">id</span> == kWebMIdCRC32)</div>
|
|
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <span class="keywordflow">return</span> SKIP;</div>
|
|
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span> </div>
|
|
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < id_info_count; ++i) {</div>
|
|
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == id_info[i].id_)</div>
|
|
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <span class="keywordflow">return</span> id_info[i].type_;</div>
|
|
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  }</div>
|
|
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span> </div>
|
|
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <span class="keywordflow">return</span> UNKNOWN;</div>
|
|
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span> }</div>
|
|
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span> </div>
|
|
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span> <span class="comment">// Finds ListElementInfo for a specific ID.</span></div>
|
|
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span> <span class="keyword">static</span> <span class="keyword">const</span> ListElementInfo* FindListInfo(<span class="keywordtype">int</span> <span class="keywordtype">id</span>) {</div>
|
|
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < arraysize(kListElementInfo); ++i) {</div>
|
|
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="keywordflow">if</span> (<span class="keywordtype">id</span> == kListElementInfo[i].id_)</div>
|
|
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="keywordflow">return</span> &kListElementInfo[i];</div>
|
|
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  }</div>
|
|
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span> </div>
|
|
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  <span class="keywordflow">return</span> NULL;</div>
|
|
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span> }</div>
|
|
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span> </div>
|
|
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span> <span class="keyword">static</span> <span class="keywordtype">int</span> FindListLevel(<span class="keywordtype">int</span> <span class="keywordtype">id</span>) {</div>
|
|
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <span class="keyword">const</span> ListElementInfo* list_info = FindListInfo(<span class="keywordtype">id</span>);</div>
|
|
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="keywordflow">if</span> (list_info)</div>
|
|
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <span class="keywordflow">return</span> list_info->level_;</div>
|
|
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span> </div>
|
|
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span> }</div>
|
|
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span> </div>
|
|
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span> <span class="keyword">static</span> <span class="keywordtype">int</span> ParseUInt(<span class="keyword">const</span> uint8_t* buf,</div>
|
|
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <span class="keywordtype">int</span> size,</div>
|
|
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  <span class="keywordtype">int</span> <span class="keywordtype">id</span>,</div>
|
|
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  WebMParserClient* client) {</div>
|
|
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  <span class="keywordflow">if</span> ((size <= 0) || (size > 8))</div>
|
|
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span> </div>
|
|
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  <span class="comment">// Read in the big-endian integer.</span></div>
|
|
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  uint64_t value = 0;</div>
|
|
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < size; ++i)</div>
|
|
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  value = (value << 8) | buf[i];</div>
|
|
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span> </div>
|
|
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <span class="comment">// We use int64_t in place of uint64_t everywhere for convenience. See this</span></div>
|
|
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <span class="comment">// bug</span></div>
|
|
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="comment">// for more details: http://crbug.com/366750#c3</span></div>
|
|
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <span class="keywordflow">if</span> (!base::IsValueInRangeForNumericType<int64_t>(value))</div>
|
|
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span> </div>
|
|
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="keywordflow">if</span> (!client->OnUInt(<span class="keywordtype">id</span>, value))</div>
|
|
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span> </div>
|
|
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  <span class="keywordflow">return</span> size;</div>
|
|
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span> }</div>
|
|
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span> </div>
|
|
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span> <span class="keyword">static</span> <span class="keywordtype">int</span> ParseFloat(<span class="keyword">const</span> uint8_t* buf,</div>
|
|
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <span class="keywordtype">int</span> size,</div>
|
|
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="keywordtype">int</span> <span class="keywordtype">id</span>,</div>
|
|
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  WebMParserClient* client) {</div>
|
|
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  <span class="keywordflow">if</span> ((size != 4) && (size != 8))</div>
|
|
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span> </div>
|
|
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="keywordtype">double</span> value = -1;</div>
|
|
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span> </div>
|
|
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="comment">// Read the bytes from big-endian form into a native endian integer.</span></div>
|
|
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  int64_t tmp = 0;</div>
|
|
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < size; ++i)</div>
|
|
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  tmp = (tmp << 8) | buf[i];</div>
|
|
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span> </div>
|
|
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="comment">// Use a union to convert the integer bit pattern into a floating point</span></div>
|
|
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <span class="comment">// number.</span></div>
|
|
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  <span class="keywordflow">if</span> (size == 4) {</div>
|
|
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="keyword">union </span>{</div>
|
|
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  int32_t src;</div>
|
|
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  <span class="keywordtype">float</span> dst;</div>
|
|
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  } tmp2;</div>
|
|
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  tmp2.src = <span class="keyword">static_cast<</span>int32_t<span class="keyword">></span>(tmp);</div>
|
|
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  value = tmp2.dst;</div>
|
|
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (size == 8) {</div>
|
|
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  <span class="keyword">union </span>{</div>
|
|
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  int64_t src;</div>
|
|
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="keywordtype">double</span> dst;</div>
|
|
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  } tmp2;</div>
|
|
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  tmp2.src = tmp;</div>
|
|
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  value = tmp2.dst;</div>
|
|
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  }</div>
|
|
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span> </div>
|
|
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <span class="keywordflow">if</span> (!client->OnFloat(<span class="keywordtype">id</span>, value))</div>
|
|
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span> </div>
|
|
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordflow">return</span> size;</div>
|
|
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span> }</div>
|
|
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span> </div>
|
|
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span> <span class="keyword">static</span> <span class="keywordtype">int</span> ParseBinary(<span class="keyword">const</span> uint8_t* buf,</div>
|
|
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="keywordtype">int</span> size,</div>
|
|
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="keywordtype">int</span> <span class="keywordtype">id</span>,</div>
|
|
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  WebMParserClient* client) {</div>
|
|
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="keywordflow">return</span> client->OnBinary(<span class="keywordtype">id</span>, buf, size) ? size : -1;</div>
|
|
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span> }</div>
|
|
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span> </div>
|
|
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span> <span class="keyword">static</span> <span class="keywordtype">int</span> ParseString(<span class="keyword">const</span> uint8_t* buf,</div>
|
|
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  <span class="keywordtype">int</span> size,</div>
|
|
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  <span class="keywordtype">int</span> <span class="keywordtype">id</span>,</div>
|
|
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  WebMParserClient* client) {</div>
|
|
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  <span class="keyword">const</span> uint8_t* end = <span class="keyword">static_cast<</span><span class="keyword">const </span>uint8_t*<span class="keyword">></span>(memchr(buf, <span class="charliteral">'\0'</span>, size));</div>
|
|
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  <span class="keywordtype">int</span> length = (end != NULL) ? static_cast<int>(end - buf) : size;</div>
|
|
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  std::string str(reinterpret_cast<const char*>(buf), length);</div>
|
|
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  <span class="keywordflow">return</span> client->OnString(<span class="keywordtype">id</span>, str) ? size : -1;</div>
|
|
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span> }</div>
|
|
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span> </div>
|
|
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span> <span class="keyword">static</span> <span class="keywordtype">int</span> ParseNonListElement(ElementType type,</div>
|
|
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  <span class="keywordtype">int</span> <span class="keywordtype">id</span>,</div>
|
|
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  int64_t element_size,</div>
|
|
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  <span class="keyword">const</span> uint8_t* buf,</div>
|
|
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  <span class="keywordtype">int</span> size,</div>
|
|
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  WebMParserClient* client) {</div>
|
|
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  DCHECK_GE(size, element_size);</div>
|
|
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span> </div>
|
|
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  <span class="keywordtype">int</span> result = -1;</div>
|
|
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  <span class="keywordflow">switch</span>(type) {</div>
|
|
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  <span class="keywordflow">case</span> LIST:</div>
|
|
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  NOTIMPLEMENTED();</div>
|
|
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  result = -1;</div>
|
|
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  <span class="keywordflow">case</span> UINT:</div>
|
|
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  result = ParseUInt(buf, element_size, <span class="keywordtype">id</span>, client);</div>
|
|
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  <span class="keywordflow">case</span> FLOAT:</div>
|
|
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  result = ParseFloat(buf, element_size, <span class="keywordtype">id</span>, client);</div>
|
|
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  <span class="keywordflow">case</span> BINARY:</div>
|
|
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  result = ParseBinary(buf, element_size, <span class="keywordtype">id</span>, client);</div>
|
|
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  <span class="keywordflow">case</span> STRING:</div>
|
|
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  result = ParseString(buf, element_size, <span class="keywordtype">id</span>, client);</div>
|
|
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  <span class="keywordflow">case</span> SKIP:</div>
|
|
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  result = element_size;</div>
|
|
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  <span class="keywordflow">default</span>:</div>
|
|
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  DVLOG(1) << <span class="stringliteral">"Unhandled ID type "</span> << type;</div>
|
|
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  };</div>
|
|
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span> </div>
|
|
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  DCHECK_LE(result, size);</div>
|
|
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <span class="keywordflow">return</span> result;</div>
|
|
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span> }</div>
|
|
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span> </div>
|
|
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span> WebMParserClient::WebMParserClient() {}</div>
|
|
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span> WebMParserClient::~WebMParserClient() {}</div>
|
|
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span> </div>
|
|
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span> WebMParserClient* WebMParserClient::OnListStart(<span class="keywordtype">int</span> <span class="keywordtype">id</span>) {</div>
|
|
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  DVLOG(1) << <span class="stringliteral">"Unexpected list element start with ID "</span> << std::hex << id;</div>
|
|
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  <span class="keywordflow">return</span> NULL;</div>
|
|
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span> }</div>
|
|
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span> </div>
|
|
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span> <span class="keywordtype">bool</span> WebMParserClient::OnListEnd(<span class="keywordtype">int</span> <span class="keywordtype">id</span>) {</div>
|
|
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  DVLOG(1) << <span class="stringliteral">"Unexpected list element end with ID "</span> << std::hex << id;</div>
|
|
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span> }</div>
|
|
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span> </div>
|
|
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span> <span class="keywordtype">bool</span> WebMParserClient::OnUInt(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, int64_t val) {</div>
|
|
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  DVLOG(1) << <span class="stringliteral">"Unexpected unsigned integer element with ID "</span> << std::hex << id;</div>
|
|
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span> }</div>
|
|
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span> </div>
|
|
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span> <span class="keywordtype">bool</span> WebMParserClient::OnFloat(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, <span class="keywordtype">double</span> val) {</div>
|
|
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  DVLOG(1) << <span class="stringliteral">"Unexpected float element with ID "</span> << std::hex << id;</div>
|
|
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span> }</div>
|
|
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span> </div>
|
|
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span> <span class="keywordtype">bool</span> WebMParserClient::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>
|
|
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  DVLOG(1) << <span class="stringliteral">"Unexpected binary element with ID "</span> << std::hex << id;</div>
|
|
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span> }</div>
|
|
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span> </div>
|
|
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span> <span class="keywordtype">bool</span> WebMParserClient::OnString(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, <span class="keyword">const</span> std::string& str) {</div>
|
|
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  DVLOG(1) << <span class="stringliteral">"Unexpected string element with ID "</span> << std::hex << id;</div>
|
|
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span> }</div>
|
|
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span> </div>
|
|
<div class="line"><a name="l00703"></a><span class="lineno"><a class="line" href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#ac228770d1828937f8aa6becec23210e1"> 703</a></span> <a class="code" href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#ac228770d1828937f8aa6becec23210e1">WebMListParser::WebMListParser</a>(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, <a class="code" href="../../d5/dec/classshaka_1_1media_1_1WebMParserClient.html">WebMParserClient</a>* client)</div>
|
|
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  : state_(NEED_LIST_HEADER),</div>
|
|
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  root_id_(id),</div>
|
|
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  root_level_(FindListLevel(id)),</div>
|
|
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  root_client_(client) {</div>
|
|
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  DCHECK_GE(root_level_, 0);</div>
|
|
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  DCHECK(client);</div>
|
|
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span> }</div>
|
|
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span> </div>
|
|
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span> WebMListParser::~WebMListParser() {}</div>
|
|
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span> </div>
|
|
<div class="line"><a name="l00714"></a><span class="lineno"><a class="line" href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#a4ebac4e1a4165017d206d4aa5c4c0350"> 714</a></span> <span class="keywordtype">void</span> <a class="code" href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#a4ebac4e1a4165017d206d4aa5c4c0350">WebMListParser::Reset</a>() {</div>
|
|
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  ChangeState(NEED_LIST_HEADER);</div>
|
|
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  list_state_stack_.clear();</div>
|
|
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span> }</div>
|
|
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span> </div>
|
|
<div class="line"><a name="l00719"></a><span class="lineno"><a class="line" href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#acd805b7eb25afcd9a3be2d8d88e3c6af"> 719</a></span> <span class="keywordtype">int</span> <a class="code" href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#acd805b7eb25afcd9a3be2d8d88e3c6af">WebMListParser::Parse</a>(<span class="keyword">const</span> uint8_t* buf, <span class="keywordtype">int</span> size) {</div>
|
|
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  DCHECK(buf);</div>
|
|
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span> </div>
|
|
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  <span class="keywordflow">if</span> (size < 0 || state_ == PARSE_ERROR || state_ == DONE_PARSING_LIST)</div>
|
|
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span> </div>
|
|
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  <span class="keywordflow">if</span> (size == 0)</div>
|
|
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  <span class="keywordflow">return</span> 0;</div>
|
|
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span> </div>
|
|
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  <span class="keyword">const</span> uint8_t* cur = buf;</div>
|
|
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  <span class="keywordtype">int</span> cur_size = size;</div>
|
|
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  <span class="keywordtype">int</span> bytes_parsed = 0;</div>
|
|
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span> </div>
|
|
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  <span class="keywordflow">while</span> (cur_size > 0 && state_ != PARSE_ERROR && state_ != DONE_PARSING_LIST) {</div>
|
|
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  <span class="keywordtype">int</span> element_id = 0;</div>
|
|
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  int64_t element_size = 0;</div>
|
|
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  <span class="keywordtype">int</span> result = WebMParseElementHeader(cur, cur_size, &element_id,</div>
|
|
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  &element_size);</div>
|
|
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span> </div>
|
|
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  <span class="keywordflow">if</span> (result < 0)</div>
|
|
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  <span class="keywordflow">return</span> result;</div>
|
|
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span> </div>
|
|
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <span class="keywordflow">if</span> (result == 0)</div>
|
|
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <span class="keywordflow">return</span> bytes_parsed;</div>
|
|
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span> </div>
|
|
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  <span class="keywordflow">switch</span>(state_) {</div>
|
|
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  <span class="keywordflow">case</span> NEED_LIST_HEADER: {</div>
|
|
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  <span class="keywordflow">if</span> (element_id != root_id_) {</div>
|
|
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  ChangeState(PARSE_ERROR);</div>
|
|
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  }</div>
|
|
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span> </div>
|
|
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  <span class="comment">// Only allow Segment & Cluster to have an unknown size.</span></div>
|
|
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  <span class="keywordflow">if</span> (element_size == kWebMUnknownSize &&</div>
|
|
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  (element_id != kWebMIdSegment) &&</div>
|
|
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  (element_id != kWebMIdCluster)) {</div>
|
|
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  ChangeState(PARSE_ERROR);</div>
|
|
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  }</div>
|
|
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span> </div>
|
|
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  ChangeState(INSIDE_LIST);</div>
|
|
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <span class="keywordflow">if</span> (!OnListStart(root_id_, element_size))</div>
|
|
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span> </div>
|
|
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  }</div>
|
|
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span> </div>
|
|
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  <span class="keywordflow">case</span> INSIDE_LIST: {</div>
|
|
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  <span class="keywordtype">int</span> header_size = result;</div>
|
|
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  <span class="keyword">const</span> uint8_t* element_data = cur + header_size;</div>
|
|
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <span class="keywordtype">int</span> element_data_size = cur_size - header_size;</div>
|
|
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span> </div>
|
|
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  <span class="keywordflow">if</span> (element_size < element_data_size)</div>
|
|
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  element_data_size = element_size;</div>
|
|
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span> </div>
|
|
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  result = ParseListElement(header_size, element_id, element_size,</div>
|
|
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  element_data, element_data_size);</div>
|
|
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span> </div>
|
|
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  DCHECK_LE(result, header_size + element_data_size);</div>
|
|
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  <span class="keywordflow">if</span> (result < 0) {</div>
|
|
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  ChangeState(PARSE_ERROR);</div>
|
|
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  }</div>
|
|
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span> </div>
|
|
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="keywordflow">if</span> (result == 0)</div>
|
|
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  <span class="keywordflow">return</span> bytes_parsed;</div>
|
|
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span> </div>
|
|
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  }</div>
|
|
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  <span class="keywordflow">case</span> DONE_PARSING_LIST:</div>
|
|
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  <span class="keywordflow">case</span> PARSE_ERROR:</div>
|
|
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  <span class="comment">// Shouldn't be able to get here.</span></div>
|
|
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  NOTIMPLEMENTED();</div>
|
|
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  }</div>
|
|
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span> </div>
|
|
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  cur += result;</div>
|
|
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  cur_size -= result;</div>
|
|
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>  bytes_parsed += result;</div>
|
|
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  }</div>
|
|
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span> </div>
|
|
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  <span class="keywordflow">return</span> (state_ == PARSE_ERROR) ? -1 : bytes_parsed;</div>
|
|
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span> }</div>
|
|
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span> </div>
|
|
<div class="line"><a name="l00803"></a><span class="lineno"><a class="line" href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#acf786fc2e07143c3f1a481401240d105"> 803</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#acf786fc2e07143c3f1a481401240d105">WebMListParser::IsParsingComplete</a>()<span class="keyword"> const </span>{</div>
|
|
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  <span class="keywordflow">return</span> state_ == DONE_PARSING_LIST;</div>
|
|
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span> }</div>
|
|
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span> </div>
|
|
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span> <span class="keywordtype">void</span> WebMListParser::ChangeState(State new_state) {</div>
|
|
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  state_ = new_state;</div>
|
|
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span> }</div>
|
|
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span> </div>
|
|
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span> <span class="keywordtype">int</span> WebMListParser::ParseListElement(<span class="keywordtype">int</span> header_size,</div>
|
|
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  <span class="keywordtype">int</span> <span class="keywordtype">id</span>,</div>
|
|
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  int64_t element_size,</div>
|
|
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  <span class="keyword">const</span> uint8_t* data,</div>
|
|
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  <span class="keywordtype">int</span> size) {</div>
|
|
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  DCHECK_GT(list_state_stack_.size(), 0u);</div>
|
|
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span> </div>
|
|
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  ListState& list_state = list_state_stack_.back();</div>
|
|
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  DCHECK(list_state.element_info_);</div>
|
|
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span> </div>
|
|
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  <span class="keyword">const</span> ListElementInfo* element_info = list_state.element_info_;</div>
|
|
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  ElementType id_type =</div>
|
|
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  FindIdType(<span class="keywordtype">id</span>, element_info->id_info_, element_info->id_info_count_);</div>
|
|
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span> </div>
|
|
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  <span class="comment">// Unexpected ID.</span></div>
|
|
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  <span class="keywordflow">if</span> (id_type == UNKNOWN) {</div>
|
|
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  <span class="keywordflow">if</span> (list_state.size_ != kWebMUnknownSize ||</div>
|
|
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  !IsSiblingOrAncestor(list_state.id_, <span class="keywordtype">id</span>)) {</div>
|
|
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  DVLOG(1) << <span class="stringliteral">"No ElementType info for ID 0x"</span> << std::hex << id;</div>
|
|
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  }</div>
|
|
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span> </div>
|
|
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  <span class="comment">// We've reached the end of a list of unknown size. Update the size now that</span></div>
|
|
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  <span class="comment">// we know it and dispatch the end of list calls.</span></div>
|
|
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  list_state.size_ = list_state.bytes_parsed_;</div>
|
|
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span> </div>
|
|
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  <span class="keywordflow">if</span> (!OnListEnd())</div>
|
|
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span> </div>
|
|
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  <span class="comment">// Check to see if all open lists have ended.</span></div>
|
|
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  <span class="keywordflow">if</span> (list_state_stack_.size() == 0)</div>
|
|
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  <span class="keywordflow">return</span> 0;</div>
|
|
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span> </div>
|
|
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  list_state = list_state_stack_.back();</div>
|
|
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  }</div>
|
|
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span> </div>
|
|
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  <span class="comment">// Make sure the whole element can fit inside the current list.</span></div>
|
|
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  int64_t total_element_size = header_size + element_size;</div>
|
|
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <span class="keywordflow">if</span> (list_state.size_ != kWebMUnknownSize &&</div>
|
|
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  list_state.size_ < list_state.bytes_parsed_ + total_element_size) {</div>
|
|
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  }</div>
|
|
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span> </div>
|
|
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  <span class="keywordflow">if</span> (id_type == LIST) {</div>
|
|
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  list_state.bytes_parsed_ += header_size;</div>
|
|
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span> </div>
|
|
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  <span class="keywordflow">if</span> (!OnListStart(<span class="keywordtype">id</span>, element_size))</div>
|
|
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  <span class="keywordflow">return</span> header_size;</div>
|
|
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  }</div>
|
|
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span> </div>
|
|
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  <span class="comment">// Make sure we have the entire element before trying to parse a non-list</span></div>
|
|
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span>  <span class="comment">// element.</span></div>
|
|
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  <span class="keywordflow">if</span> (size < element_size)</div>
|
|
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  <span class="keywordflow">return</span> 0;</div>
|
|
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span> </div>
|
|
<div class="line"><a name="l00867"></a><span class="lineno"> 867</span>  <span class="keywordtype">int</span> bytes_parsed = ParseNonListElement(id_type, <span class="keywordtype">id</span>, element_size,</div>
|
|
<div class="line"><a name="l00868"></a><span class="lineno"> 868</span>  data, size, list_state.client_);</div>
|
|
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  DCHECK_LE(bytes_parsed, size);</div>
|
|
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span> </div>
|
|
<div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  <span class="comment">// Return if an error occurred or we need more data.</span></div>
|
|
<div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  <span class="comment">// Note: bytes_parsed is 0 for a successful parse of a size 0 element. We</span></div>
|
|
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  <span class="comment">// need to check the element_size to disambiguate the "need more data" case</span></div>
|
|
<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  <span class="comment">// from a successful parse.</span></div>
|
|
<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  <span class="keywordflow">if</span> (bytes_parsed < 0 || (bytes_parsed == 0 && element_size != 0))</div>
|
|
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  <span class="keywordflow">return</span> bytes_parsed;</div>
|
|
<div class="line"><a name="l00877"></a><span class="lineno"> 877</span> </div>
|
|
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  <span class="keywordtype">int</span> result = header_size + bytes_parsed;</div>
|
|
<div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  list_state.bytes_parsed_ += result;</div>
|
|
<div class="line"><a name="l00880"></a><span class="lineno"> 880</span> </div>
|
|
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span>  <span class="comment">// See if we have reached the end of the current list.</span></div>
|
|
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span>  <span class="keywordflow">if</span> (list_state.bytes_parsed_ == list_state.size_) {</div>
|
|
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  <span class="keywordflow">if</span> (!OnListEnd())</div>
|
|
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  <span class="keywordflow">return</span> -1;</div>
|
|
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  }</div>
|
|
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span> </div>
|
|
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  <span class="keywordflow">return</span> result;</div>
|
|
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span> }</div>
|
|
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span> </div>
|
|
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span> <span class="keywordtype">bool</span> WebMListParser::OnListStart(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, int64_t size) {</div>
|
|
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  <span class="keyword">const</span> ListElementInfo* element_info = FindListInfo(<span class="keywordtype">id</span>);</div>
|
|
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  <span class="keywordflow">if</span> (!element_info)</div>
|
|
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span> </div>
|
|
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  <span class="keywordtype">int</span> current_level =</div>
|
|
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  root_level_ + <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(list_state_stack_.size()) - 1;</div>
|
|
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  <span class="keywordflow">if</span> (current_level + 1 != element_info->level_)</div>
|
|
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span> </div>
|
|
<div class="line"><a name="l00900"></a><span class="lineno"> 900</span>  WebMParserClient* current_list_client = NULL;</div>
|
|
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  <span class="keywordflow">if</span> (!list_state_stack_.empty()) {</div>
|
|
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  <span class="comment">// Make sure the new list doesn't go past the end of the current list.</span></div>
|
|
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  ListState current_list_state = list_state_stack_.back();</div>
|
|
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  <span class="keywordflow">if</span> (current_list_state.size_ != kWebMUnknownSize &&</div>
|
|
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  current_list_state.size_ < current_list_state.bytes_parsed_ + size)</div>
|
|
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  current_list_client = current_list_state.client_;</div>
|
|
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  current_list_client = root_client_;</div>
|
|
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  }</div>
|
|
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span> </div>
|
|
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  WebMParserClient* new_list_client = current_list_client->OnListStart(<span class="keywordtype">id</span>);</div>
|
|
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  <span class="keywordflow">if</span> (!new_list_client)</div>
|
|
<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00915"></a><span class="lineno"> 915</span> </div>
|
|
<div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  ListState new_list_state = { id, size, 0, element_info, new_list_client };</div>
|
|
<div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  list_state_stack_.push_back(new_list_state);</div>
|
|
<div class="line"><a name="l00918"></a><span class="lineno"> 918</span> </div>
|
|
<div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  <span class="keywordflow">if</span> (size == 0)</div>
|
|
<div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  <span class="keywordflow">return</span> OnListEnd();</div>
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<div class="line"><a name="l00921"></a><span class="lineno"> 921</span> </div>
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<div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00923"></a><span class="lineno"> 923</span> }</div>
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<div class="line"><a name="l00924"></a><span class="lineno"> 924</span> </div>
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<div class="line"><a name="l00925"></a><span class="lineno"> 925</span> <span class="keywordtype">bool</span> WebMListParser::OnListEnd() {</div>
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<div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  <span class="keywordtype">int</span> lists_ended = 0;</div>
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<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  <span class="keywordflow">for</span> (; !list_state_stack_.empty(); ++lists_ended) {</div>
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<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  <span class="keyword">const</span> ListState& list_state = list_state_stack_.back();</div>
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<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  int64_t bytes_parsed = list_state.bytes_parsed_;</div>
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<div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  <span class="keywordtype">int</span> <span class="keywordtype">id</span> = list_state.id_;</div>
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<div class="line"><a name="l00931"></a><span class="lineno"> 931</span> </div>
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<div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  <span class="keywordflow">if</span> (bytes_parsed != list_state.size_)</div>
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<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00934"></a><span class="lineno"> 934</span> </div>
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<div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  list_state_stack_.pop_back();</div>
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<div class="line"><a name="l00936"></a><span class="lineno"> 936</span> </div>
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<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  WebMParserClient* client = NULL;</div>
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<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  <span class="keywordflow">if</span> (!list_state_stack_.empty()) {</div>
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<div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  <span class="comment">// Update the bytes_parsed_ for the parent element.</span></div>
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<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  list_state_stack_.back().bytes_parsed_ += bytes_parsed;</div>
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<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  client = list_state_stack_.back().client_;</div>
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<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  client = root_client_;</div>
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<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  }</div>
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<div class="line"><a name="l00945"></a><span class="lineno"> 945</span> </div>
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<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  <span class="keywordflow">if</span> (!client->OnListEnd(<span class="keywordtype">id</span>))</div>
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<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  }</div>
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<div class="line"><a name="l00949"></a><span class="lineno"> 949</span> </div>
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<div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  DCHECK_GE(lists_ended, 1);</div>
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<div class="line"><a name="l00951"></a><span class="lineno"> 951</span> </div>
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<div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  <span class="keywordflow">if</span> (list_state_stack_.empty())</div>
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<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  ChangeState(DONE_PARSING_LIST);</div>
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<div class="line"><a name="l00954"></a><span class="lineno"> 954</span> </div>
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<div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00956"></a><span class="lineno"> 956</span> }</div>
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<div class="line"><a name="l00957"></a><span class="lineno"> 957</span> </div>
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<div class="line"><a name="l00958"></a><span class="lineno"> 958</span> <span class="keywordtype">bool</span> WebMListParser::IsSiblingOrAncestor(<span class="keywordtype">int</span> id_a, <span class="keywordtype">int</span> id_b)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  DCHECK((id_a == kWebMIdSegment) || (id_a == kWebMIdCluster));</div>
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<div class="line"><a name="l00960"></a><span class="lineno"> 960</span> </div>
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<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  <span class="keywordflow">if</span> (id_a == kWebMIdCluster) {</div>
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<div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  <span class="comment">// kWebMIdCluster siblings.</span></div>
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<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < arraysize(kSegmentIds); i++) {</div>
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<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>  <span class="keywordflow">if</span> (kSegmentIds[i].id_ == id_b)</div>
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<div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  }</div>
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|
<div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  }</div>
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|
<div class="line"><a name="l00968"></a><span class="lineno"> 968</span> </div>
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|
<div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  <span class="comment">// kWebMIdSegment siblings.</span></div>
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|
<div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  <span class="keywordflow">return</span> ((id_b == kWebMIdSegment) || (id_b == kWebMIdEBMLHeader));</div>
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|
<div class="line"><a name="l00971"></a><span class="lineno"> 971</span> }</div>
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|
<div class="line"><a name="l00972"></a><span class="lineno"> 972</span> </div>
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|
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span> } <span class="comment">// namespace media</span></div>
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|
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span> } <span class="comment">// namespace shaka</span></div>
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<div class="ttc" id="classshaka_1_1media_1_1WebMListParser_html_ac228770d1828937f8aa6becec23210e1"><div class="ttname"><a href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#ac228770d1828937f8aa6becec23210e1">shaka::media::WebMListParser::WebMListParser</a></div><div class="ttdeci">WebMListParser(int id, WebMParserClient *client)</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/db6/webm__parser_8cc_source.html#l00703">webm_parser.cc:703</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1WebMListParser_html_a4ebac4e1a4165017d206d4aa5c4c0350"><div class="ttname"><a href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#a4ebac4e1a4165017d206d4aa5c4c0350">shaka::media::WebMListParser::Reset</a></div><div class="ttdeci">void Reset()</div><div class="ttdoc">Resets the state of the parser so it can start parsing a new list. </div><div class="ttdef"><b>Definition:</b> <a href="../../d3/db6/webm__parser_8cc_source.html#l00714">webm_parser.cc:714</a></div></div>
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<div class="ttc" id="classshaka_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#l00719">webm_parser.cc:719</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1WebMListParser_html_acf786fc2e07143c3f1a481401240d105"><div class="ttname"><a href="../../dc/dca/classshaka_1_1media_1_1WebMListParser.html#acf786fc2e07143c3f1a481401240d105">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#l00803">webm_parser.cc:803</a></div></div>
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<div class="ttc" id="classshaka_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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