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<div class="title">ac4_audio_util.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 2020 Google Inc. All rights reserved.</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Use of this source code is governed by a BSD-style</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// license that can be found in the LICENSE file or at</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>  </div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "packager/media/codecs/ac4_audio_util.h"</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>  </div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include "packager/base/macros.h"</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include "packager/base/strings/string_number_conversions.h"</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "packager/media/base/bit_reader.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/media/base/rcheck.h"</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="keyword">namespace </span><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  </div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span>{</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// Speaker group index</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// Bit, Location</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// 0(LSB), Left/Right pair</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// 1, Centre</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// 2, Left surround/Right surround pair</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// 3, Left back/Right back pair</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// 4, Top front left/Top front right pair</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// 5, Top back left/Top back right pair</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// 6, LFE</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">// 7, Top left/Top right pair</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// 8, Top side left/Top side right pair</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// 9, Top front centre</span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// 10, Top back centre</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// 11, Top centre</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">// 12, LFE2</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// 13, Bottom front left/Bottom front right pair</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">// 14, Bottom front centre</span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// 15, Back centre</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// 16, Left screen/Right screen pair</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">// 17, Left wide/Right wide pair</span></div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">// 18, Vertical height left/Vertical height right pair</span></div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">enum</span> kAC4AudioChannelGroupIndex {</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  kLRPair = 0x1,</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  kCentre = 0x2,</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  kLsRsPair = 0x4,</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  kLbRbPair = 0x8,</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  kTflTfrPair = 0x10,</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  kTblTbrPair = 0x20,</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  kLFE = 0x40,</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  kTlTrPair = 0x80,</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  kTslTsrPair = 0x100,</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  kTopfrontCentre = 0x200,</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  kTopbackCentre = 0x400,</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  kTopCentre = 0x800,</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  kLFE2 = 0x1000,</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  kBflBfrPair = 0x2000,</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  kBottomFrontCentre = 0x4000,</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  kBackCentre = 0x8000,</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  kLscrRscrPair = 0x10000,</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  kLwRw = 0x20000,</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  kVhlVhrPair = 0x40000,</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> };</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  </div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment">// Mapping of channel configurations to the MPEG audio value based on ETSI TS</span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">// 103 192-2 V1.2.1 Digital Audio Compression (AC-4) Standard;</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment">// Part 2: Immersive and personalized Table G.1</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> uint32_t AC4ChannelMasktoMPEGValue(uint32_t channel_mask) {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  uint32_t ret = 0;</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  </div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">switch</span> (channel_mask) {</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">case</span> kCentre:</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  ret = 1;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">case</span> kLRPair:</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  ret = 2;</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">case</span> kCentre | kLRPair:</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  ret = 3;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">case</span> kCentre | kLRPair | kBackCentre:</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  ret = 4;</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">case</span> kCentre | kLRPair | kLsRsPair:</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  ret = 5;</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">case</span> kCentre | kLRPair | kLsRsPair | kLFE:</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  ret = 6;</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">case</span> kCentre | kLRPair | kLsRsPair | kLFE | kLwRw:</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  ret = 7;</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">case</span> kBackCentre | kLRPair:</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  ret = 9;</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">case</span> kLRPair | kLsRsPair:</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  ret = 10;</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">case</span> kCentre | kLRPair | kLsRsPair | kLFE | kBackCentre:</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  ret = 11;</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">case</span> kCentre | kLRPair | kLsRsPair | kLbRbPair | kLFE:</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  ret = 12;</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">case</span> kLwRw | kBackCentre | kBottomFrontCentre | kBflBfrPair | kLFE2 |</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  kTopCentre | kTopbackCentre | kTopfrontCentre | kTslTsrPair | kLFE |</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  kTblTbrPair | kTflTfrPair | kLbRbPair | kLsRsPair | kCentre | kLRPair:</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">case</span> kVhlVhrPair | kLwRw | kBackCentre | kBottomFrontCentre | kBflBfrPair|</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  kLFE2 | kTopCentre | kTopbackCentre | kTopfrontCentre | kTslTsrPair |</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  kLFE | kTblTbrPair | kLbRbPair | kLsRsPair | kCentre | kLRPair:</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  ret = 13;</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">case</span> kLFE | kTflTfrPair | kLsRsPair | kCentre | kLRPair:</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">case</span> kVhlVhrPair | kLFE | kCentre | kLRPair | kLsRsPair:</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  ret = 14;</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">case</span> kLFE2 | kTopbackCentre | kLFE | kTflTfrPair | kCentre | kLRPair |</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  kLsRsPair | kLbRbPair:</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">case</span> kVhlVhrPair | kLFE2 | kTopbackCentre | kLFE | kCentre | kLRPair |</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  kLsRsPair | kLbRbPair:</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  ret = 15;</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">case</span> kLFE | kTblTbrPair | kTflTfrPair | kLsRsPair | kCentre | kLRPair:</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordflow">case</span> kVhlVhrPair | kLFE | kTblTbrPair | kLsRsPair | kCentre | kLRPair:</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  ret = 16;</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">case</span> kTopCentre | kTopfrontCentre | kLFE | kTblTbrPair | kTflTfrPair |</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  kLsRsPair | kCentre | kLRPair:</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">case</span> kVhlVhrPair | kTopCentre | kTopfrontCentre | kLFE | kTblTbrPair |</div>
|
|
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  kLsRsPair | kCentre | kLRPair:</div>
|
|
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  ret = 17;</div>
|
|
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">case</span> kTopCentre | kTopfrontCentre | kLFE | kTblTbrPair | kTflTfrPair |</div>
|
|
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  kCentre | kLRPair | kLsRsPair | kLbRbPair:</div>
|
|
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">case</span> kVhlVhrPair | kTopCentre | kTopfrontCentre | kLFE | kTblTbrPair |</div>
|
|
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  kCentre | kLRPair | kLsRsPair | kLbRbPair:</div>
|
|
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  ret = 18;</div>
|
|
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">case</span> kLFE | kTblTbrPair | kTflTfrPair | kCentre | kLRPair | kLsRsPair |</div>
|
|
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  kLbRbPair:</div>
|
|
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">case</span> kVhlVhrPair | kLFE | kTblTbrPair | kCentre | kLRPair | kLsRsPair |</div>
|
|
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  kLbRbPair:</div>
|
|
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  ret = 19;</div>
|
|
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">case</span> kLscrRscrPair | kLFE | kTblTbrPair | kTflTfrPair | kCentre | kLRPair |</div>
|
|
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  kLsRsPair | kLbRbPair:</div>
|
|
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">case</span> kVhlVhrPair | kLscrRscrPair | kLFE | kTblTbrPair | kCentre | kLRPair |</div>
|
|
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  kLsRsPair | kLbRbPair:</div>
|
|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  ret = 20;</div>
|
|
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">default</span>:</div>
|
|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  ret = 0xFFFFFFFF;</div>
|
|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">return</span> ret;</div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> }</div>
|
|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  </div>
|
|
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment">// Parse AC-4 substream group based on ETSI TS 103 192-2 V1.2.1 Digital Audio</span></div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment">// Compression (AC-4) Standard; Part 2: Immersive and personalized E.11.</span></div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="keywordtype">bool</span> ParseAC4SubStreamGroupDsi(BitReader& bit_reader) {</div>
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordtype">bool</span> b_substream_present;</div>
|
|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  RCHECK(bit_reader.ReadBits(1, &b_substream_present));</div>
|
|
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordtype">bool</span> b_hsf_ext;</div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  RCHECK(bit_reader.ReadBits(1, &b_hsf_ext));</div>
|
|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordtype">bool</span> b_channel_coded;</div>
|
|
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  RCHECK(bit_reader.ReadBits(1, &b_channel_coded));</div>
|
|
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  uint8_t n_substreams;</div>
|
|
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  RCHECK(bit_reader.ReadBits(8, &n_substreams));</div>
|
|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">for</span> (uint8_t i = 0; i < n_substreams; i++) {</div>
|
|
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  RCHECK(bit_reader.SkipBits(2));</div>
|
|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordtype">bool</span> b_substream_bitrate_indicator;</div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  RCHECK(bit_reader.ReadBits(1, &b_substream_bitrate_indicator));</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">if</span> (b_substream_bitrate_indicator) {</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  RCHECK(bit_reader.SkipBits(5));</div>
|
|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  }</div>
|
|
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">if</span> (b_channel_coded) {</div>
|
|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  RCHECK(bit_reader.SkipBits(24));</div>
|
|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordtype">bool</span> b_ajoc;</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  RCHECK(bit_reader.ReadBits(1, &b_ajoc));</div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">if</span> (b_ajoc) {</div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordtype">bool</span> b_static_dmx;</div>
|
|
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  RCHECK(bit_reader.ReadBits(1, &b_static_dmx));</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">if</span> (!b_static_dmx) {</div>
|
|
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  RCHECK(bit_reader.SkipBits(4));</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>  RCHECK(bit_reader.SkipBits(6));</div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  }</div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  RCHECK(bit_reader.SkipBits(4));</div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  }</div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  }</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordtype">bool</span> b_content_type;</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  RCHECK(bit_reader.ReadBits(1, &b_content_type));</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">if</span> (b_content_type) {</div>
|
|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  RCHECK(bit_reader.SkipBits(3));</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordtype">bool</span> b_language_indicator;</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  RCHECK(bit_reader.ReadBits(1, &b_language_indicator));</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">if</span> (b_language_indicator) {</div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  uint8_t n_language_tag_bytes;</div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  RCHECK(bit_reader.ReadBits(6, &n_language_tag_bytes));</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  RCHECK(bit_reader.SkipBits(n_language_tag_bytes * 8));</div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  }</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">return</span> <span class="keyword">true</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>  </div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="comment">// Parse AC-4 Presentation V1 based on ETSI TS 103 192-2 V1.2.1 Digital Audio</span></div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="comment">// Compression (AC-4) Standard;Part 2: Immersive and personalized E.10.</span></div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="keywordtype">bool</span> ParseAC4PresentationV1Dsi(BitReader& bit_reader,</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  uint32_t pres_bytes,</div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  uint8_t* mdcompat,</div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  uint32_t* presentation_channel_mask_v1,</div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordtype">bool</span>* dolby_cbi_indicator,</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  uint8_t* dolby_atmos_indicator) {</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordtype">bool</span> ret = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="comment">// Record the initial offset.</span></div>
|
|
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> presentation_start = bit_reader.bit_position();</div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  uint8_t presentation_config_v1;</div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  RCHECK(bit_reader.ReadBits(5, &presentation_config_v1));</div>
|
|
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  uint8_t b_add_emdf_substreams;</div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="comment">// set default value (stereo content) for output parameters.</span></div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  *mdcompat = 0;</div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  *presentation_channel_mask_v1 = 2;</div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  *dolby_cbi_indicator = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  *dolby_atmos_indicator = 0;</div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">if</span> (presentation_config_v1 == 0x06) {</div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  b_add_emdf_substreams = 1;</div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  RCHECK(bit_reader.ReadBits(3, mdcompat));</div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordtype">bool</span> b_presentation_id;</div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  RCHECK(bit_reader.ReadBits(1, &b_presentation_id));</div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keywordflow">if</span> (b_presentation_id) {</div>
|
|
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  RCHECK(bit_reader.SkipBits(5));</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>  RCHECK(bit_reader.SkipBits(19));</div>
|
|
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordtype">bool</span> b_presentation_channel_coded;</div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  RCHECK(bit_reader.ReadBits(1, &b_presentation_channel_coded));</div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  *presentation_channel_mask_v1 = 0;</div>
|
|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">if</span> (b_presentation_channel_coded) {</div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  uint8_t dsi_presentation_ch_mode;</div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  RCHECK(bit_reader.ReadBits(5, &dsi_presentation_ch_mode));</div>
|
|
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">if</span> (dsi_presentation_ch_mode >= 11 && dsi_presentation_ch_mode <= 14) {</div>
|
|
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  RCHECK(bit_reader.SkipBits(1));</div>
|
|
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  uint8_t pres_top_channel_pairs;</div>
|
|
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  RCHECK(bit_reader.ReadBits(2, &pres_top_channel_pairs));</div>
|
|
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">if</span> (pres_top_channel_pairs) {</div>
|
|
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  *dolby_cbi_indicator = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  }</div>
|
|
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (dsi_presentation_ch_mode == 15) {</div>
|
|
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  *dolby_cbi_indicator = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  }</div>
|
|
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  RCHECK(bit_reader.ReadBits(24, presentation_channel_mask_v1));</div>
|
|
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  }</div>
|
|
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordtype">bool</span> b_presentation_core_differs;</div>
|
|
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  RCHECK(bit_reader.ReadBits(1, &b_presentation_core_differs));</div>
|
|
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordflow">if</span> (b_presentation_core_differs) {</div>
|
|
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordtype">bool</span> b_presentation_core_channel_coded;</div>
|
|
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  RCHECK(bit_reader.ReadBits(1, &b_presentation_core_channel_coded));</div>
|
|
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keywordflow">if</span> (b_presentation_core_channel_coded) {</div>
|
|
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  RCHECK(bit_reader.SkipBits(2));</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>  }</div>
|
|
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="keywordtype">bool</span> b_presentation_filter;</div>
|
|
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  RCHECK(bit_reader.ReadBits(1, &b_presentation_filter));</div>
|
|
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keywordflow">if</span> (b_presentation_filter) {</div>
|
|
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  RCHECK(bit_reader.SkipBits(1));</div>
|
|
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  uint8_t n_filter_bytes;</div>
|
|
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  RCHECK(bit_reader.ReadBits(8, &n_filter_bytes));</div>
|
|
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  RCHECK(bit_reader.SkipBits(n_filter_bytes * 8));</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="keywordflow">if</span> (presentation_config_v1 == 0x1f) {</div>
|
|
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  ret &= ParseAC4SubStreamGroupDsi(bit_reader);</div>
|
|
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  RCHECK(bit_reader.SkipBits(1));</div>
|
|
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keywordflow">if</span> (presentation_config_v1 == 0 ||</div>
|
|
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  presentation_config_v1 == 1 ||</div>
|
|
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  presentation_config_v1 == 2) {</div>
|
|
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  ret &= ParseAC4SubStreamGroupDsi(bit_reader);</div>
|
|
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  ret &= ParseAC4SubStreamGroupDsi(bit_reader);</div>
|
|
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  }</div>
|
|
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keywordflow">if</span> (presentation_config_v1 == 3 || presentation_config_v1 == 4) {</div>
|
|
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  ret &= ParseAC4SubStreamGroupDsi(bit_reader);</div>
|
|
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  ret &= ParseAC4SubStreamGroupDsi(bit_reader);</div>
|
|
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  ret &= ParseAC4SubStreamGroupDsi(bit_reader);</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>  <span class="keywordflow">if</span> (presentation_config_v1 == 5) {</div>
|
|
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  uint8_t n_substream_groups_minus2;</div>
|
|
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  RCHECK(bit_reader.ReadBits(3, &n_substream_groups_minus2));</div>
|
|
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordflow">for</span> (uint8_t sg = 0; sg < n_substream_groups_minus2 + 2; sg++) {</div>
|
|
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  ret &= ParseAC4SubStreamGroupDsi(bit_reader);</div>
|
|
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  }</div>
|
|
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  }</div>
|
|
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keywordflow">if</span> (presentation_config_v1 > 5) {</div>
|
|
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  uint8_t n_skip_bytes;</div>
|
|
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  RCHECK(bit_reader.ReadBits(7, &n_skip_bytes));</div>
|
|
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  RCHECK(bit_reader.SkipBits(n_skip_bytes * 8));</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>  RCHECK(bit_reader.SkipBits(1));</div>
|
|
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  RCHECK(bit_reader.ReadBits(1, &b_add_emdf_substreams));</div>
|
|
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  }</div>
|
|
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordflow">if</span> (b_add_emdf_substreams) {</div>
|
|
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  uint8_t n_add_emdf_substreams;</div>
|
|
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  RCHECK(bit_reader.ReadBits(7, &n_add_emdf_substreams));</div>
|
|
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  RCHECK(bit_reader.SkipBits(n_add_emdf_substreams * 15));</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="keywordtype">bool</span> b_presentation_bitrate_info;</div>
|
|
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  RCHECK(bit_reader.ReadBits(1, &b_presentation_bitrate_info));</div>
|
|
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">if</span> (b_presentation_bitrate_info) {</div>
|
|
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="comment">// Skip bit rate information based on ETSI TS 103 190-2 v1.2.1 E.7.1</span></div>
|
|
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  RCHECK(bit_reader.SkipBits(66));</div>
|
|
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  }</div>
|
|
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="keywordtype">bool</span> b_alternative;</div>
|
|
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  RCHECK(bit_reader.ReadBits(1, &b_alternative));</div>
|
|
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordflow">if</span> (b_alternative) {</div>
|
|
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  bit_reader.SkipToNextByte();</div>
|
|
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="comment">// Parse alternative information based on ETSI TS 103 190-2 v1.2.1 E.12</span></div>
|
|
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  uint16_t name_len;</div>
|
|
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  RCHECK(bit_reader.ReadBits(16, &name_len));</div>
|
|
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  RCHECK(bit_reader.SkipBits(name_len * 8));</div>
|
|
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  uint8_t n_targets;</div>
|
|
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  RCHECK(bit_reader.ReadBits(5, &n_targets));</div>
|
|
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  RCHECK(bit_reader.SkipBits(n_targets * 11));</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>  bit_reader.SkipToNextByte();</div>
|
|
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keywordflow">if</span> ((bit_reader.bit_position() - presentation_start) <=</div>
|
|
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  (pres_bytes - 1) * 8) {</div>
|
|
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  RCHECK(bit_reader.SkipBits(1));</div>
|
|
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  RCHECK(bit_reader.ReadBits(1, dolby_atmos_indicator));</div>
|
|
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  RCHECK(bit_reader.SkipBits(4));</div>
|
|
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keywordtype">bool</span> b_extended_presentation_group_index;</div>
|
|
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  RCHECK(bit_reader.ReadBits(1, &b_extended_presentation_group_index));</div>
|
|
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keywordflow">if</span> (b_extended_presentation_group_index) {</div>
|
|
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  RCHECK(bit_reader.SkipBits(9));</div>
|
|
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  RCHECK(bit_reader.SkipBits(1));</div>
|
|
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  }</div>
|
|
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  }</div>
|
|
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="keywordflow">return</span> ret;</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="keywordtype">bool</span> ExtractAc4Data(<span class="keyword">const</span> std::vector<uint8_t>& ac4_data,</div>
|
|
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  uint8_t* bitstream_version,</div>
|
|
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  uint8_t* presentation_version,</div>
|
|
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  uint8_t* mdcompat,</div>
|
|
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  uint32_t* presentation_channel_mask_v1,</div>
|
|
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="keywordtype">bool</span>* dolby_ims_indicator,</div>
|
|
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keywordtype">bool</span>* dolby_cbi_indicator) {</div>
|
|
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  BitReader bit_reader(ac4_data.data(), ac4_data.size());</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>  uint16_t n_presentation;</div>
|
|
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  RCHECK(bit_reader.SkipBits(3) && bit_reader.ReadBits(7, bitstream_version));</div>
|
|
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  RCHECK(bit_reader.SkipBits(5) && bit_reader.ReadBits(9, &n_presentation));</div>
|
|
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  </div>
|
|
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordflow">if</span> (*bitstream_version == 2) {</div>
|
|
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  uint8_t b_program_id = 0;</div>
|
|
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  RCHECK(bit_reader.ReadBits(1, &b_program_id));</div>
|
|
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keywordflow">if</span> (b_program_id) {</div>
|
|
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  RCHECK(bit_reader.SkipBits(16));</div>
|
|
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  uint8_t b_uuid = 0;</div>
|
|
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  RCHECK(bit_reader.ReadBits(1, &b_uuid));</div>
|
|
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordflow">if</span> (b_uuid) {</div>
|
|
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  RCHECK(bit_reader.SkipBits(16 * 8));</div>
|
|
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  }</div>
|
|
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  }</div>
|
|
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (*bitstream_version == 0 || *bitstream_version == 1) {</div>
|
|
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  LOG(WARNING) << <span class="stringliteral">"Bitstream version 0 or 1 is not supported"</span>;</div>
|
|
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  LOG(WARNING) << <span class="stringliteral">"Invalid Bitstream version"</span>;</div>
|
|
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  }</div>
|
|
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  </div>
|
|
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  RCHECK(bit_reader.SkipBits(66));</div>
|
|
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  bit_reader.SkipToNextByte();</div>
|
|
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  </div>
|
|
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="comment">// AC4 stream containing the single presentation is valid for OTT only.</span></div>
|
|
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="comment">// IMS has two presentations, and the 2nd is legacy (duplicated) presentation.</span></div>
|
|
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="comment">// So it can be considered as AC4 stream with single presentation. And IMS</span></div>
|
|
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="comment">// presentation must be prior to legacy presentation.</span></div>
|
|
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="comment">// In other word, only the 1st presentation in AC4 stream need to be parsed.</span></div>
|
|
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keyword">const</span> uint8_t ott_n_presentation = 1;</div>
|
|
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="keywordflow">for</span> (uint8_t i = 0; i < ott_n_presentation; i++) {</div>
|
|
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  RCHECK(bit_reader.ReadBits(8, presentation_version));</div>
|
|
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="comment">// *presentation_version == 2 means IMS presentation.</span></div>
|
|
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="keywordflow">if</span> ((*presentation_version == 2 && n_presentation > 2) ||</div>
|
|
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  (*presentation_version == 1 && n_presentation > 1) ) {</div>
|
|
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  LOG(WARNING) << <span class="stringliteral">"Seeing multiple presentations, only single presentation "</span></div>
|
|
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  << <span class="stringliteral">"(including IMS presentation) is supported"</span>;</div>
|
|
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  }</div>
|
|
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  uint32_t pres_bytes;</div>
|
|
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  RCHECK(bit_reader.ReadBits(8, &pres_bytes));</div>
|
|
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keywordflow">if</span> (pres_bytes == 255) {</div>
|
|
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  uint32_t add_pres_bytes;</div>
|
|
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  RCHECK(bit_reader.ReadBits(16, &add_pres_bytes));</div>
|
|
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  pres_bytes += add_pres_bytes;</div>
|
|
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  }</div>
|
|
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  </div>
|
|
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="keywordtype">size_t</span> presentation_bits = 0;</div>
|
|
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  *dolby_ims_indicator = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="keywordflow">if</span> (*presentation_version == 0) {</div>
|
|
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  LOG(WARNING) << <span class="stringliteral">"Presentation version 0 is not supported"</span>;</div>
|
|
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="keywordflow">if</span> (*presentation_version == 1 || *presentation_version == 2) {</div>
|
|
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keywordflow">if</span> (*presentation_version == 2) {</div>
|
|
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  *dolby_ims_indicator = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  }</div>
|
|
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> presentation_start = bit_reader.bit_position();</div>
|
|
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="comment">// dolby_atmos_indicator is extended in Dolby internal specs.</span></div>
|
|
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="comment">// It indicates whether the source content before encoding is Atmos.</span></div>
|
|
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="comment">// No final decision about how to use it in OTT.</span></div>
|
|
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="comment">// Parse it for the future usage.</span></div>
|
|
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  uint8_t dolby_atmos_indicator;</div>
|
|
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="keywordflow">if</span> (!ParseAC4PresentationV1Dsi(bit_reader, pres_bytes, mdcompat,</div>
|
|
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  presentation_channel_mask_v1,</div>
|
|
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  dolby_cbi_indicator,</div>
|
|
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  &dolby_atmos_indicator)) {</div>
|
|
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  }</div>
|
|
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> presentation_end = bit_reader.bit_position();</div>
|
|
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  presentation_bits = presentation_end - presentation_start;</div>
|
|
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  LOG(WARNING) << <span class="stringliteral">"Invalid Presentation version"</span>;</div>
|
|
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  }</div>
|
|
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  }</div>
|
|
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  <span class="keywordtype">size_t</span> skip_bits = pres_bytes * 8 - presentation_bits;</div>
|
|
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  RCHECK(bit_reader.SkipBits(skip_bits));</div>
|
|
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  }</div>
|
|
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span> }</div>
|
|
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span> } <span class="comment">// namespace</span></div>
|
|
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  </div>
|
|
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> <span class="keywordtype">bool</span> CalculateAC4ChannelMask(<span class="keyword">const</span> std::vector<uint8_t>& ac4_data,</div>
|
|
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  uint32_t* ac4_channel_mask) {</div>
|
|
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  uint8_t bitstream_version;</div>
|
|
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  uint8_t presentation_version;</div>
|
|
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  uint8_t mdcompat;</div>
|
|
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  uint32_t pre_channel_mask;</div>
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<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="keywordtype">bool</span> dolby_ims_indicator;</div>
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<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keywordtype">bool</span> dolby_cbi_indicator;</div>
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<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  </div>
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<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keywordflow">if</span> (!ExtractAc4Data(ac4_data, &bitstream_version, &presentation_version,</div>
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<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  &mdcompat, &pre_channel_mask, &dolby_ims_indicator,</div>
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<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  &dolby_cbi_indicator)) {</div>
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<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  LOG(WARNING) << <span class="stringliteral">"Seeing invalid AC4 data: "</span></div>
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<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  << base::HexEncode(ac4_data.data(), ac4_data.size());</div>
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<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  }</div>
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<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  </div>
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<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordflow">if</span> (pre_channel_mask) {</div>
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<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  *ac4_channel_mask = pre_channel_mask;</div>
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<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  *ac4_channel_mask = 0x800000;</div>
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<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  }</div>
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<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00455"></a><span class="lineno"> 455</span> }</div>
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<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  </div>
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<div class="line"><a name="l00457"></a><span class="lineno"> 457</span> <span class="keywordtype">bool</span> CalculateAC4ChannelMPEGValue(<span class="keyword">const</span> std::vector<uint8_t>& ac4_data,</div>
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<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  uint32_t* ac4_channel_mpeg_value) {</div>
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<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  uint8_t bitstream_version;</div>
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<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  uint8_t presentation_version;</div>
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<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  uint8_t mdcompat;</div>
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<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  uint32_t pre_channel_mask;</div>
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<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordtype">bool</span> dolby_ims_indicator;</div>
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<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class="keywordtype">bool</span> dolby_cbi_indicator;</div>
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<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  </div>
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<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <span class="keywordflow">if</span> (!ExtractAc4Data(ac4_data, &bitstream_version, &presentation_version,</div>
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<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  &mdcompat, &pre_channel_mask, &dolby_ims_indicator,</div>
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<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  &dolby_cbi_indicator)) {</div>
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<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  LOG(WARNING) << <span class="stringliteral">"Seeing invalid AC4 data: "</span></div>
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<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  << base::HexEncode(ac4_data.data(), ac4_data.size());</div>
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<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  }</div>
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<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  </div>
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<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  *ac4_channel_mpeg_value = AC4ChannelMasktoMPEGValue(pre_channel_mask);</div>
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<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00476"></a><span class="lineno"> 476</span> }</div>
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<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  </div>
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<div class="line"><a name="l00478"></a><span class="lineno"> 478</span> <span class="keywordtype">bool</span> GetAc4CodecInfo(<span class="keyword">const</span> std::vector<uint8_t>& ac4_data,</div>
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<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  uint8_t* ac4_codec_info) {</div>
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<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  uint8_t bitstream_version;</div>
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<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  uint8_t presentation_version;</div>
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<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  uint8_t mdcompat;</div>
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<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  uint32_t pre_channel_mask;</div>
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<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keywordtype">bool</span> dolby_ims_indicator;</div>
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<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="keywordtype">bool</span> dolby_cbi_indicator;</div>
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<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  </div>
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<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="keywordflow">if</span> (!ExtractAc4Data(ac4_data, &bitstream_version, &presentation_version,</div>
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<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  &mdcompat, &pre_channel_mask, &dolby_ims_indicator,</div>
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<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  &dolby_cbi_indicator)) {</div>
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<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  LOG(WARNING) << <span class="stringliteral">"Seeing invalid AC4 data: "</span></div>
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|
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  << base::HexEncode(ac4_data.data(), ac4_data.size());</div>
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<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  }</div>
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<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  </div>
|
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<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="comment">// The valid value of bitstream_version (8 bits) is 2, the valid value of</span></div>
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<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="comment">// presentation_version (8 bits) is 1 or 2, and mdcompat is 3 bits.</span></div>
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<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <span class="comment">// So uint8_t is fine now. If Dolby extends the value of bitstream_version and</span></div>
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<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <span class="comment">// presentation_version in future, maybe need change the type from uint8_t to</span></div>
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<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="comment">// uint16_t or uint32_t to accommodate the valid values.</span></div>
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|
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <span class="comment">// If that, AudioStreamInfo::GetCodecString need to be changed accordingly.</span></div>
|
|
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="comment">// bitstream_version (3bits) + presentation_version (2bits) + mdcompat (3bits)</span></div>
|
|
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  *ac4_codec_info = ((bitstream_version << 5) |</div>
|
|
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  ((presentation_version << 3) & 0x1F) |</div>
|
|
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  (mdcompat & 0x7));</div>
|
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<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span> }</div>
|
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<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  </div>
|
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<div class="line"><a name="l00508"></a><span class="lineno"> 508</span> <span class="keywordtype">bool</span> GetAc4ImmersiveInfo(<span class="keyword">const</span> std::vector<uint8_t>& ac4_data,</div>
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<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <span class="keywordtype">bool</span>* ac4_ims_flag,</div>
|
|
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="keywordtype">bool</span>* ac4_cbi_flag) {</div>
|
|
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  uint8_t bitstream_version;</div>
|
|
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  uint8_t presentation_version;</div>
|
|
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  uint8_t mdcompat;</div>
|
|
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  uint32_t pre_channel_mask;</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="keywordflow">if</span> (!ExtractAc4Data(ac4_data, &bitstream_version, &presentation_version,</div>
|
|
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  &mdcompat, &pre_channel_mask, ac4_ims_flag,</div>
|
|
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  ac4_cbi_flag)) {</div>
|
|
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  LOG(WARNING) << <span class="stringliteral">"Seeing invalid AC4 data: "</span></div>
|
|
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  << base::HexEncode(ac4_data.data(), ac4_data.size());</div>
|
|
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  }</div>
|
|
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  </div>
|
|
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span> }</div>
|
|
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  </div>
|
|
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span> } <span class="comment">// namespace media</span></div>
|
|
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span> } <span class="comment">// namespace shaka</span></div>
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</div><!-- fragment --></div><!-- contents -->
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<div class="ttc" id="anamespaceshaka_html"><div class="ttname"><a href="../../d8/daf/namespaceshaka.html">shaka</a></div><div class="ttdoc">All the methods that are virtual are virtual for mocking.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d15/gflags__hex__bytes_8cc_source.html#l00011">gflags_hex_bytes.cc:11</a></div></div>
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