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<li class="navelem"><a class="el" href="../../dir_3f8eec2fc361645de4b1ec14c19fffc7.html">packager</a></li><li class="navelem"><a class="el" href="../../dir_f99dae54fe7170f791f339b952d5067a.html">media</a></li><li class="navelem"><a class="el" href="../../dir_64597db6ac7a9160e951a4226a03f10e.html">codecs</a></li> </ul>
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<div class="title">av1_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 2018 Google LLC. 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/av1_parser.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 <algorithm></span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>  </div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "packager/base/logging.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/media/base/bit_reader.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/media/base/rcheck.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  </div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</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="l00016"></a><span class="lineno"> 16</span> <span class="keyword">namespace </span>media {</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">// 3. Symbols and abbreviated terms.</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">enum</span> MotionType {</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  IDENTITY = 0,</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  TRANSLATION,</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  ROTZOOM,</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  AFFINE,</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> };</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  </div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kSelectScreenContentTools = 2;</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kSelectIntegerMv = 2;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kPrimaryRefNone = 7;</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kNumRefFrames = 8;</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kAllFrames = (1 << kNumRefFrames) - 1;</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="comment">// 6.2.2. OBU header semantics.</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">enum</span> ObuType {</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  OBU_SEQUENCE_HEADER = 1,</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  OBU_TEMPORAL_DELIMITER,</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  OBU_FRAME_HEADER,</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  OBU_TILE_GROUP,</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  OBU_METADATA,</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  OBU_FRAME,</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  OBU_REDUNDENT_FRAME_HEADER,</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  OBU_TILE_LIST,</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// Reserved types between OBU_TILE_LIST and OBU_PADDING.</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  OBU_PADDING = 15,</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> };</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment">// 6.4.2. Color config semantics.</span></div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">enum</span> ColorPrimaries {</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  CP_BT_709 = 1,</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  CP_UNSPECIFIED = 2,</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="comment">// We are not interested in the others.</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> };</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="keyword">enum</span> TransferCharacteristics {</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  TC_UNSPECIFIED = 2,</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  TC_SRGB = 13,</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="comment">// We are not interested in the others.</span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> };</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">enum</span> MatrixCoefficients {</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  MC_IDENTITY = 0,</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  MC_UNSPECIFIED = 2,</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">// We are not interested in the others.</span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> };</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="keyword">enum</span> ChromaSamplePosition {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  CSP_UNKNOWN = 0,</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  CSP_VERTICAL,</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  CSP_COLOCATED,</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  CSP_RESERVED,</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> };</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> <span class="comment">// 6.8.2. Uncompressed header semantics.</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="keyword">enum</span> FrameType {</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  KEY_FRAME = 0,</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  INTER_FRAME,</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  INTRA_ONLY_FRAME,</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  SWITCH_FRAME,</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> };</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  </div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment">// 6.10.24. Ref frames semantics.</span></div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="keyword">enum</span> RefFrameName {</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  INTRA_FRAME = 0,</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  LAST_FRAME,</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  LAST2_FRAME,</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  LAST3_FRAME,</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  GOLDEN_FRAME,</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  BWDREF_FRAME,</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  ALTREF2_FRAME,</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  ALTREF_FRAME,</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> };</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  </div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment">// 4.7. Mathematical functions.</span></div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="keywordtype">int</span> Clip3(<span class="keywordtype">int</span> min_value, <span class="keywordtype">int</span> max_value, <span class="keywordtype">int</span> value) {</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">if</span> (value < min_value)</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">return</span> min_value;</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">if</span> (value > max_value)</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> max_value;</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">return</span> value;</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> }</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  </div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">// 4.7. Mathematical functions. The FloorLog2(x) function is defined to be the</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment">// floor of the base 2 logarithm of the input x.</span></div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="keywordtype">int</span> FloorLog2(<span class="keywordtype">int</span> x) {</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordtype">int</span> s = 0;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">while</span> (x != 0) {</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  x = x >> 1;</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  s++;</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  }</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">return</span> s - 1;</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> }</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  </div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment">// 4.10.3. uvlc(). This is a modified form of Exponential-Golomb coding.</span></div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keywordtype">bool</span> ReadUvlc(BitReader* reader, uint32_t* val) {</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// Count the number of contiguous zero bits.</span></div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordtype">int</span> leading_zeros = 0;</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordtype">bool</span> done = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  RCHECK(reader->ReadBits(1, &done));</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">if</span> (done)</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  leading_zeros++;</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">if</span> (leading_zeros >= 32) {</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  *val = (1ull << 32) - 1;</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  }</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  </div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordtype">int</span> value = 0;</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">if</span> (leading_zeros > 0)</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  RCHECK(reader->ReadBits(leading_zeros, &value));</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  </div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  *val = value + (1 << leading_zeros) - 1;</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> }</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  </div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment">// 4.10.4. le(n). Unsigned little-endian n-byte number appearing directly in the</span></div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment">// bitstream.</span></div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="keywordtype">bool</span> ReadLe(<span class="keywordtype">int</span> n, BitReader* reader, <span class="keywordtype">size_t</span>* val) {</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordtype">size_t</span> t = 0;</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; i++) {</div>
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|
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordtype">size_t</span> <span class="keywordtype">byte</span> = 0;</div>
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|
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  RCHECK(reader->ReadBits(8, &<span class="keywordtype">byte</span>));</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  t += (<span class="keywordtype">byte</span> << (i * 8));</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  }</div>
|
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  *val = t;</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> }</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  </div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment">// 4.10.5. leb128(). Unsigned integer represented by a variable number of</span></div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment">// little-endian bytes.</span></div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="keywordtype">bool</span> ReadLeb128(BitReader* reader, <span class="keywordtype">size_t</span>* size) {</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordtype">size_t</span> value = 0;</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < 8; i++) {</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordtype">size_t</span> leb128_byte = 0;</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  RCHECK(reader->ReadBits(8, &leb128_byte));</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  value |= (leb128_byte & 0x7f) << (i * 7);</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span> (!(leb128_byte & 0x80))</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  }</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="comment">// It is a requirement of bitstream conformance that the value returned from</span></div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="comment">// the leb128 parsing process is less than or equal to (1<<32) - 1.</span></div>
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|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  RCHECK(value <= ((1ull << 32) - 1));</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  *size = value;</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> }</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment">// 4.10.6. su(n). Signed integer converted from an n bits unsigned integer in</span></div>
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|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment">// the bitstream.</span></div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="keywordtype">bool</span> ReadSu(<span class="keywordtype">int</span> n, BitReader* reader, <span class="keywordtype">int</span>* value) {</div>
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|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  RCHECK(reader->ReadBits(n, value));</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordtype">int</span> sign_mask = 1 << (n - 1);</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">if</span> (*value & sign_mask)</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  *value = *value - 2 * sign_mask;</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> }</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  </div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment">// 4.10.7. ns(n). Unsigned encoded integer with maximum number of values in n</span></div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment">// (i.e. output in range 0..n-1).</span></div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="keywordtype">bool</span> ReadNs(<span class="keywordtype">int</span> n, BitReader* reader, <span class="keywordtype">int</span>* value) {</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> w = FloorLog2(n) + 1;</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> m = (1 << w) - n;</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  RCHECK(reader->ReadBits(w - 1, value));</div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">if</span> (*value < m)</div>
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|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordtype">int</span> extra_bit = 0;</div>
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|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  RCHECK(reader->ReadBits(1, &extra_bit));</div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  *value = (*value << 1) - m + extra_bit;</div>
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|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> }</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  </div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="comment">// 5.9.16. Tile size calculation function: returns the smallest value for k such</span></div>
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|
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="comment">// that blk_size << k is greater than or equal to target.</span></div>
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|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="keywordtype">int</span> TileLog2(<span class="keywordtype">int</span> blk_size, <span class="keywordtype">int</span> target) {</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordtype">int</span> k = 0;</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">for</span> (k = 0; (blk_size << k) < target; k++)</div>
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|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">return</span> k;</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> }</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> <span class="comment">// See 7.8. Set frame refs process.</span></div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="keywordtype">int</span> FindLatestBackward(<span class="keywordtype">int</span> shifted_order_hints[],</div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordtype">bool</span> used_frame[],</div>
|
|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordtype">int</span> cur_frame_hint) {</div>
|
|
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordtype">int</span> ref = -1;</div>
|
|
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordtype">int</span> latest_order_hint = 0;</div>
|
|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kNumRefFrames; i++) {</div>
|
|
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> hint = shifted_order_hints[i];</div>
|
|
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">if</span> (!used_frame[i] && hint >= cur_frame_hint &&</div>
|
|
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  (ref < 0 || hint >= latest_order_hint)) {</div>
|
|
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  ref = i;</div>
|
|
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  latest_order_hint = hint;</div>
|
|
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  }</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>  <span class="keywordflow">return</span> ref;</div>
|
|
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> }</div>
|
|
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  </div>
|
|
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="comment">// See 7.8. Set frame refs process.</span></div>
|
|
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="keywordtype">int</span> FindEarliestBackward(<span class="keywordtype">int</span> shifted_order_hints[],</div>
|
|
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordtype">bool</span> used_frame[],</div>
|
|
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordtype">int</span> cur_frame_hint) {</div>
|
|
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordtype">int</span> ref = -1;</div>
|
|
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordtype">int</span> earliest_order_hint = 0;</div>
|
|
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kNumRefFrames; i++) {</div>
|
|
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> hint = shifted_order_hints[i];</div>
|
|
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">if</span> (!used_frame[i] && hint >= cur_frame_hint &&</div>
|
|
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  (ref < 0 || hint < earliest_order_hint)) {</div>
|
|
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  ref = i;</div>
|
|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  earliest_order_hint = hint;</div>
|
|
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  }</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>  <span class="keywordflow">return</span> ref;</div>
|
|
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> }</div>
|
|
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  </div>
|
|
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="comment">// See 7.8. Set frame refs process.</span></div>
|
|
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="keywordtype">int</span> FindLatestForward(<span class="keywordtype">int</span> shifted_order_hints[],</div>
|
|
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordtype">bool</span> used_frame[],</div>
|
|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordtype">int</span> cur_frame_hint) {</div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordtype">int</span> ref = -1;</div>
|
|
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordtype">int</span> latest_order_hint = 0;</div>
|
|
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kNumRefFrames; i++) {</div>
|
|
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> hint = shifted_order_hints[i];</div>
|
|
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">if</span> (!used_frame[i] && hint < cur_frame_hint &&</div>
|
|
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  (ref < 0 || hint >= latest_order_hint)) {</div>
|
|
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  ref = i;</div>
|
|
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  latest_order_hint = hint;</div>
|
|
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  }</div>
|
|
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  }</div>
|
|
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">return</span> ref;</div>
|
|
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> }</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="comment">// namespace</span></div>
|
|
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  </div>
|
|
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> AV1Parser::AV1Parser() = <span class="keywordflow">default</span>;</div>
|
|
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> AV1Parser::~AV1Parser() = <span class="keywordflow">default</span>;</div>
|
|
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  </div>
|
|
<div class="line"><a name="l00255"></a><span class="lineno"><a class="line" href="../../db/dc7/classshaka_1_1media_1_1AV1Parser.html#ae0f20c4724f1c65b27f9f155c6362e6d"> 255</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../db/dc7/classshaka_1_1media_1_1AV1Parser.html#ae0f20c4724f1c65b27f9f155c6362e6d">AV1Parser::Parse</a>(<span class="keyword">const</span> uint8_t* data,</div>
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|
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordtype">size_t</span> data_size,</div>
|
|
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  std::vector<Tile>* tiles) {</div>
|
|
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  tiles->clear();</div>
|
|
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  </div>
|
|
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html">BitReader</a> reader(data, data_size);</div>
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|
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keywordflow">while</span> (reader.<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#a94b03de069b0054ee4a534b12644a986">bits_available</a>() > 0) {</div>
|
|
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keywordflow">if</span> (!ParseOpenBitstreamUnit(&reader, tiles))</div>
|
|
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  }</div>
|
|
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keywordflow">return</span> <span class="keyword">true</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>  </div>
|
|
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="comment">// 5.3.1. General OBU syntax.</span></div>
|
|
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> <span class="keywordtype">bool</span> AV1Parser::ParseOpenBitstreamUnit(<a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html">BitReader</a>* reader,</div>
|
|
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  std::vector<Tile>* tiles) {</div>
|
|
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  ObuHeader obu_header;</div>
|
|
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  RCHECK(ParseObuHeader(reader, &obu_header));</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>  <span class="keywordtype">size_t</span> obu_size = 0;</div>
|
|
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordflow">if</span> (obu_header.obu_has_size_field)</div>
|
|
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  RCHECK(ReadLeb128(reader, &obu_size));</div>
|
|
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  obu_size = reader-><a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#a94b03de069b0054ee4a534b12644a986">bits_available</a>() / 8;</div>
|
|
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  </div>
|
|
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  VLOG(4) << <span class="stringliteral">"OBU "</span> << obu_header.obu_type << <span class="stringliteral">" size "</span> << obu_size;</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="keyword">const</span> <span class="keywordtype">size_t</span> start_position = reader-><a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#a100abf1165633b67359bb3d813594f7e">bit_position</a>();</div>
|
|
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keywordflow">switch</span> (obu_header.obu_type) {</div>
|
|
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keywordflow">case</span> OBU_SEQUENCE_HEADER:</div>
|
|
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  RCHECK(ParseSequenceHeaderObu(reader));</div>
|
|
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordflow">case</span> OBU_FRAME_HEADER:</div>
|
|
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keywordflow">case</span> OBU_REDUNDENT_FRAME_HEADER:</div>
|
|
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  RCHECK(ParseFrameHeaderObu(obu_header, reader));</div>
|
|
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordflow">case</span> OBU_TILE_GROUP:</div>
|
|
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  RCHECK(ParseTileGroupObu(obu_size, reader, tiles));</div>
|
|
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keywordflow">case</span> OBU_FRAME:</div>
|
|
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  RCHECK(ParseFrameObu(obu_header, obu_size, reader, tiles));</div>
|
|
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordflow">default</span>:</div>
|
|
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="comment">// Skip all OBUs we are not interested.</span></div>
|
|
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  RCHECK(reader-><a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#a4ab20ef220c76072eaecb982aba0541d">SkipBits</a>(obu_size * 8));</div>
|
|
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordflow">break</span>;</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">const</span> <span class="keywordtype">size_t</span> current_position = reader-><a class="code" href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#a100abf1165633b67359bb3d813594f7e">bit_position</a>();</div>
|
|
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> payload_bits = current_position - start_position;</div>
|
|
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">if</span> (obu_header.obu_type == OBU_TILE_GROUP ||</div>
|
|
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  obu_header.obu_type == OBU_FRAME) {</div>
|
|
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  RCHECK(payload_bits == obu_size * 8);</div>
|
|
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (obu_size > 0) {</div>
|
|
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  RCHECK(payload_bits <= obu_size * 8);</div>
|
|
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  RCHECK(ParseTrailingBits(obu_size * 8 - payload_bits, reader));</div>
|
|
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  }</div>
|
|
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> }</div>
|
|
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  </div>
|
|
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="comment">// 5.3.2. OBU header syntax.</span></div>
|
|
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> <span class="keywordtype">bool</span> AV1Parser::ParseObuHeader(BitReader* reader, ObuHeader* obu_header) {</div>
|
|
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="keywordtype">int</span> obu_forbidden_bit = 0;</div>
|
|
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  RCHECK(reader->ReadBits(1, &obu_forbidden_bit));</div>
|
|
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  RCHECK(obu_forbidden_bit == 0);</div>
|
|
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  RCHECK(reader->ReadBits(4, &obu_header->obu_type));</div>
|
|
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordtype">bool</span> obu_extension_flag = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  RCHECK(reader->ReadBits(1, &obu_extension_flag));</div>
|
|
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  RCHECK(reader->ReadBits(1, &obu_header->obu_has_size_field));</div>
|
|
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  RCHECK(reader->SkipBits(1)); <span class="comment">// Skip obu_reserved_1bit.</span></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>  <span class="keywordflow">if</span> (obu_extension_flag)</div>
|
|
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  RCHECK(ParseObuExtensionHeader(reader, &obu_header->extension_header));</div>
|
|
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  </div>
|
|
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span> }</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> <span class="comment">// 5.3.3. OBU extension header syntax.</span></div>
|
|
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="keywordtype">bool</span> AV1Parser::ParseObuExtensionHeader(</div>
|
|
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  BitReader* reader,</div>
|
|
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  ObuExtensionHeader* obu_extension_header) {</div>
|
|
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  RCHECK(reader->ReadBits(3, &obu_extension_header->temporal_id));</div>
|
|
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  RCHECK(reader->ReadBits(2, &obu_extension_header->spatial_id));</div>
|
|
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  RCHECK(reader->SkipBits(3)); <span class="comment">// Skip extension_header_reserved_3bits.</span></div>
|
|
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</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="comment">// 5.3.4. Trailing bits syntax.</span></div>
|
|
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="keywordtype">bool</span> AV1Parser::ParseTrailingBits(<span class="keywordtype">size_t</span> nb_bits, BitReader* reader) {</div>
|
|
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keywordtype">int</span> trailing_one_bit = 0;</div>
|
|
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  RCHECK(reader->ReadBits(1, &trailing_one_bit));</div>
|
|
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  RCHECK(trailing_one_bit == 1);</div>
|
|
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  nb_bits--;</div>
|
|
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordflow">while</span> (nb_bits > 0) {</div>
|
|
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keywordtype">int</span> trailing_zero_bit = 0;</div>
|
|
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  RCHECK(reader->ReadBits(1, &trailing_zero_bit));</div>
|
|
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  RCHECK(trailing_zero_bit == 0);</div>
|
|
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  nb_bits--;</div>
|
|
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  }</div>
|
|
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keywordflow">return</span> <span class="keyword">true</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>  </div>
|
|
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="keywordtype">bool</span> AV1Parser::ByteAlignment(BitReader* reader) {</div>
|
|
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordflow">while</span> (reader->bit_position() & 7) {</div>
|
|
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keywordtype">int</span> zero_bit = 0;</div>
|
|
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  RCHECK(reader->ReadBits(1, &zero_bit));</div>
|
|
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  RCHECK(zero_bit == 0);</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>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span> }</div>
|
|
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  </div>
|
|
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="comment">// 5.5.1. General sequence header OBU syntax.</span></div>
|
|
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> <span class="keywordtype">bool</span> AV1Parser::ParseSequenceHeaderObu(BitReader* reader) {</div>
|
|
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  RCHECK(reader->ReadBits(3, &sequence_header_.seq_profile));</div>
|
|
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="comment">// Skip still_picture.</span></div>
|
|
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  RCHECK(reader->SkipBits(1));</div>
|
|
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  </div>
|
|
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  RCHECK(reader->ReadBits(1, &sequence_header_.reduced_still_picture_header));</div>
|
|
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keywordflow">if</span> (sequence_header_.reduced_still_picture_header) {</div>
|
|
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  sequence_header_.decoder_model_info_present_flag = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  sequence_header_.operating_points_cnt_minus_1 = 0;</div>
|
|
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  sequence_header_.operating_point_idc[0] = 0;</div>
|
|
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="comment">// Skip seq_level_idx[0].</span></div>
|
|
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  RCHECK(reader->SkipBits(5));</div>
|
|
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  sequence_header_.decoder_model_present_for_this_op[0] = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="keywordtype">bool</span> timing_info_present_flag = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  RCHECK(reader->ReadBits(1, &timing_info_present_flag));</div>
|
|
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  </div>
|
|
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordtype">bool</span> decoder_model_info_present_flag = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keywordflow">if</span> (timing_info_present_flag) {</div>
|
|
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  RCHECK(ParseTimingInfo(reader));</div>
|
|
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  RCHECK(reader->ReadBits(1, &decoder_model_info_present_flag));</div>
|
|
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="keywordflow">if</span> (decoder_model_info_present_flag)</div>
|
|
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  RCHECK(ParseDecoderModelInfo(reader));</div>
|
|
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  }</div>
|
|
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  sequence_header_.decoder_model_info_present_flag =</div>
|
|
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  decoder_model_info_present_flag;</div>
|
|
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  </div>
|
|
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordtype">bool</span> initial_display_delay_present_flag = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  RCHECK(reader->ReadBits(1, &initial_display_delay_present_flag));</div>
|
|
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  </div>
|
|
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  RCHECK(reader->ReadBits(5, &sequence_header_.operating_points_cnt_minus_1));</div>
|
|
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i <= sequence_header_.operating_points_cnt_minus_1; i++) {</div>
|
|
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  RCHECK(reader->ReadBits(12, &sequence_header_.operating_point_idc[i]));</div>
|
|
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="keywordtype">int</span> seq_level_idx_i = 0;</div>
|
|
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  RCHECK(reader->ReadBits(5, &seq_level_idx_i));</div>
|
|
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="keywordflow">if</span> (seq_level_idx_i > 7) {</div>
|
|
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="comment">// Skip seq_tier[i].</span></div>
|
|
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  RCHECK(reader->SkipBits(1));</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>  </div>
|
|
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="keywordflow">if</span> (sequence_header_.decoder_model_info_present_flag) {</div>
|
|
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  RCHECK(reader->ReadBits(</div>
|
|
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  1, &sequence_header_.decoder_model_present_for_this_op[i]));</div>
|
|
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="keywordflow">if</span> (sequence_header_.decoder_model_present_for_this_op[i]) {</div>
|
|
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  RCHECK(SkipOperatingParametersInfo(reader));</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>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  sequence_header_.decoder_model_present_for_this_op[i] = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  }</div>
|
|
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  </div>
|
|
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keywordflow">if</span> (initial_display_delay_present_flag) {</div>
|
|
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="comment">// Skip initial_display_delay_present_for_this_op[i],</span></div>
|
|
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="comment">// initial_display_delay_minus_1[i].</span></div>
|
|
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  RCHECK(reader->SkipBitsConditional(<span class="keyword">true</span>, 4));</div>
|
|
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  }</div>
|
|
<div class="line"><a name="l00422"></a><span class="lineno"> 422</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>  RCHECK(reader->ReadBits(4, &sequence_header_.frame_width_bits_minus_1));</div>
|
|
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  RCHECK(reader->ReadBits(4, &sequence_header_.frame_height_bits_minus_1));</div>
|
|
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  RCHECK(reader->ReadBits(sequence_header_.frame_width_bits_minus_1 + 1,</div>
|
|
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  &sequence_header_.max_frame_width_minus_1));</div>
|
|
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  RCHECK(reader->ReadBits(sequence_header_.frame_height_bits_minus_1 + 1,</div>
|
|
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  &sequence_header_.max_frame_height_minus_1));</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="keywordflow">if</span> (sequence_header_.reduced_still_picture_header) {</div>
|
|
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  sequence_header_.frame_id_numbers_present_flag = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  RCHECK(</div>
|
|
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  reader->ReadBits(1, &sequence_header_.frame_id_numbers_present_flag));</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> (sequence_header_.frame_id_numbers_present_flag) {</div>
|
|
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  RCHECK(</div>
|
|
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  reader->ReadBits(4, &sequence_header_.delta_frame_id_length_minus_2));</div>
|
|
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  RCHECK(reader->ReadBits(</div>
|
|
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  3, &sequence_header_.additional_frame_id_length_minus_1));</div>
|
|
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  }</div>
|
|
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  </div>
|
|
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  RCHECK(reader->ReadBits(1, &sequence_header_.use_128x128_superblock));</div>
|
|
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="comment">// Skip enable_filter_intra, enable_intra_edge_filter.</span></div>
|
|
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  RCHECK(reader->SkipBits(1 + 1));</div>
|
|
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  </div>
|
|
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordflow">if</span> (sequence_header_.reduced_still_picture_header) {</div>
|
|
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  sequence_header_.enable_warped_motion = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  sequence_header_.enable_order_hint = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  sequence_header_.enable_ref_frame_mvs = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  sequence_header_.order_hint_bits = 0;</div>
|
|
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  sequence_header_.seq_force_screen_content_tools = kSelectScreenContentTools;</div>
|
|
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  sequence_header_.seq_force_integer_mv = kSelectIntegerMv;</div>
|
|
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="comment">// Skip enable_interintra_compound, enable_masked_compound,</span></div>
|
|
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  RCHECK(reader->SkipBits(1 + 1));</div>
|
|
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  </div>
|
|
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  RCHECK(reader->ReadBits(1, &sequence_header_.enable_warped_motion));</div>
|
|
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  RCHECK(reader->SkipBits(1)); <span class="comment">// Skip enable_dual_filter.</span></div>
|
|
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  RCHECK(reader->ReadBits(1, &sequence_header_.enable_order_hint));</div>
|
|
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordflow">if</span> (sequence_header_.enable_order_hint) {</div>
|
|
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class="comment">// Skip enable_jnt_comp.</span></div>
|
|
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  RCHECK(reader->SkipBits(1));</div>
|
|
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  RCHECK(reader->ReadBits(1, &sequence_header_.enable_ref_frame_mvs));</div>
|
|
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  sequence_header_.enable_ref_frame_mvs = <span class="keyword">false</span>;</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="keywordtype">bool</span> seq_choose_screen_content_tools = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  RCHECK(reader->ReadBits(1, &seq_choose_screen_content_tools));</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">if</span> (seq_choose_screen_content_tools) {</div>
|
|
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  sequence_header_.seq_force_screen_content_tools =</div>
|
|
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  kSelectScreenContentTools;</div>
|
|
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  RCHECK(reader->ReadBits(</div>
|
|
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  1, &sequence_header_.seq_force_screen_content_tools));</div>
|
|
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  }</div>
|
|
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  </div>
|
|
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <span class="keywordflow">if</span> (sequence_header_.seq_force_screen_content_tools > 0) {</div>
|
|
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="keywordtype">bool</span> seq_choose_integer_mv = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  RCHECK(reader->ReadBits(1, &seq_choose_integer_mv));</div>
|
|
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="keywordflow">if</span> (seq_choose_integer_mv)</div>
|
|
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  sequence_header_.seq_force_integer_mv = kSelectIntegerMv;</div>
|
|
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  RCHECK(reader->ReadBits(1, &sequence_header_.seq_force_integer_mv));</div>
|
|
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  sequence_header_.seq_force_integer_mv = kSelectIntegerMv;</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>  </div>
|
|
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="keywordflow">if</span> (sequence_header_.enable_order_hint) {</div>
|
|
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="keywordtype">int</span> order_hint_bits_minus_1 = 0;</div>
|
|
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  RCHECK(reader->ReadBits(3, &order_hint_bits_minus_1));</div>
|
|
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  sequence_header_.order_hint_bits = order_hint_bits_minus_1 + 1;</div>
|
|
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  sequence_header_.order_hint_bits = 0;</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>  }</div>
|
|
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  </div>
|
|
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  RCHECK(reader->ReadBits(1, &sequence_header_.enable_superres));</div>
|
|
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  RCHECK(reader->ReadBits(1, &sequence_header_.enable_cdef));</div>
|
|
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  RCHECK(reader->ReadBits(1, &sequence_header_.enable_restoration));</div>
|
|
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  RCHECK(ParseColorConfig(reader));</div>
|
|
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  RCHECK(reader->ReadBits(1, &sequence_header_.film_grain_params_present));</div>
|
|
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span> }</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> <span class="comment">// 5.5.2. Color config syntax.</span></div>
|
|
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span> <span class="keywordtype">bool</span> AV1Parser::ParseColorConfig(BitReader* reader) {</div>
|
|
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  ColorConfig& color_config = sequence_header_.color_config;</div>
|
|
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  </div>
|
|
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="keywordtype">bool</span> high_bitdepth = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  RCHECK(reader->ReadBits(1, &high_bitdepth));</div>
|
|
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="keywordflow">if</span> (sequence_header_.seq_profile == 2 && high_bitdepth) {</div>
|
|
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="keywordtype">bool</span> twelve_bit = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  RCHECK(reader->ReadBits(1, &twelve_bit));</div>
|
|
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  color_config.bit_depth = twelve_bit ? 12 : 10;</div>
|
|
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sequence_header_.seq_profile <= 2) {</div>
|
|
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  color_config.bit_depth = high_bitdepth ? 10 : 8;</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">if</span> (sequence_header_.seq_profile == 1)</div>
|
|
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  color_config.mono_chrome = 0;</div>
|
|
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  RCHECK(reader->ReadBits(1, &color_config.mono_chrome));</div>
|
|
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  color_config.num_planes = color_config.mono_chrome ? 1 : 3;</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="keywordtype">bool</span> color_description_present_flag = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  RCHECK(reader->ReadBits(1, &color_description_present_flag));</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="keywordflow">if</span> (color_description_present_flag) {</div>
|
|
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  RCHECK(reader->ReadBits(8, &color_config.color_primaries));</div>
|
|
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  RCHECK(reader->ReadBits(8, &color_config.transfer_chracteristics));</div>
|
|
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  RCHECK(reader->ReadBits(8, &color_config.matrix_coefficients));</div>
|
|
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  color_config.color_primaries = CP_UNSPECIFIED;</div>
|
|
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  color_config.transfer_chracteristics = TC_UNSPECIFIED;</div>
|
|
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  color_config.matrix_coefficients = MC_UNSPECIFIED;</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="keywordflow">if</span> (color_config.mono_chrome) {</div>
|
|
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  RCHECK(reader->ReadBits(1, &color_config.color_range));</div>
|
|
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  color_config.subsampling_x = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  color_config.subsampling_y = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  color_config.chroma_sampling_position = CSP_UNKNOWN;</div>
|
|
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  color_config.separate_uv_delta_q = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (color_config.color_primaries == CP_BT_709 &&</div>
|
|
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  color_config.transfer_chracteristics == TC_SRGB &&</div>
|
|
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  color_config.matrix_coefficients == MC_IDENTITY) {</div>
|
|
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  color_config.color_range = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  color_config.subsampling_x = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  color_config.subsampling_y = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  RCHECK(reader->ReadBits(1, &color_config.color_range));</div>
|
|
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  <span class="keywordflow">if</span> (sequence_header_.seq_profile == 0) {</div>
|
|
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  color_config.subsampling_x = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  color_config.subsampling_y = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sequence_header_.seq_profile == 1) {</div>
|
|
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  color_config.subsampling_x = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  color_config.subsampling_y = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="keywordflow">if</span> (color_config.bit_depth == 12) {</div>
|
|
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  RCHECK(reader->ReadBits(1, &color_config.subsampling_x));</div>
|
|
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  <span class="keywordflow">if</span> (color_config.subsampling_x)</div>
|
|
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  RCHECK(reader->ReadBits(1, &color_config.subsampling_y));</div>
|
|
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  color_config.subsampling_y = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  color_config.subsampling_x = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  color_config.subsampling_y = <span class="keyword">false</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>  }</div>
|
|
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  </div>
|
|
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="keywordflow">if</span> (color_config.subsampling_x && color_config.subsampling_y)</div>
|
|
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  RCHECK(reader->ReadBits(2, &color_config.chroma_sampling_position));</div>
|
|
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  }</div>
|
|
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  </div>
|
|
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  RCHECK(reader->ReadBits(1, &color_config.separate_uv_delta_q));</div>
|
|
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</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>  </div>
|
|
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span> <span class="comment">// 5.5.3.Timing info syntax.</span></div>
|
|
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> <span class="keywordtype">bool</span> AV1Parser::ParseTimingInfo(BitReader* reader) {</div>
|
|
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="comment">// Skip num_units_in_display_tick, time_scale.</span></div>
|
|
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  RCHECK(reader->SkipBits(32 + 32));</div>
|
|
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="keywordtype">bool</span> equal_picture_interval = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  RCHECK(reader->ReadBits(1, &equal_picture_interval));</div>
|
|
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  sequence_header_.timing_info.equal_picture_interval = equal_picture_interval;</div>
|
|
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="keywordflow">if</span> (equal_picture_interval) {</div>
|
|
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  uint32_t num_ticks_per_picture_minus_1 = 0;</div>
|
|
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  RCHECK(ReadUvlc(reader, &num_ticks_per_picture_minus_1));</div>
|
|
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  }</div>
|
|
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span> }</div>
|
|
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  </div>
|
|
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span> <span class="comment">// 5.5.4. Decoder model info syntax.</span></div>
|
|
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span> <span class="keywordtype">bool</span> AV1Parser::ParseDecoderModelInfo(BitReader* reader) {</div>
|
|
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  DecoderModelInfo& decoder_model_info = sequence_header_.decoder_model_info;</div>
|
|
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  </div>
|
|
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  RCHECK(reader->ReadBits(5, &decoder_model_info.buffer_delay_length_minus_1));</div>
|
|
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="comment">// Skip num_units_in_decoding_tick.</span></div>
|
|
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  RCHECK(reader->SkipBits(32));</div>
|
|
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  RCHECK(reader->ReadBits(</div>
|
|
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  5, &decoder_model_info.buffer_removal_time_length_minus_1));</div>
|
|
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  RCHECK(reader->ReadBits(</div>
|
|
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  5, &decoder_model_info.frame_presentation_time_length_minus_1));</div>
|
|
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</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>  </div>
|
|
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span> <span class="comment">// 5.5.5. Operating parameters info syntax.</span></div>
|
|
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span> <span class="keywordtype">bool</span> AV1Parser::SkipOperatingParametersInfo(BitReader* reader) {</div>
|
|
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> n =</div>
|
|
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  sequence_header_.decoder_model_info.buffer_delay_length_minus_1 + 1;</div>
|
|
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="comment">// Skip decoder_buffer_delay[op], encoder_buffer_delay[op],</span></div>
|
|
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  <span class="comment">// low_delay_mode_flag[op].</span></div>
|
|
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  RCHECK(reader->SkipBits(n + n + 1));</div>
|
|
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  <span class="keywordflow">return</span> <span class="keyword">true</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>  </div>
|
|
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span> <span class="comment">// 5.9.1. General frame header OBU syntax.</span></div>
|
|
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span> <span class="keywordtype">bool</span> AV1Parser::ParseFrameHeaderObu(<span class="keyword">const</span> ObuHeader& obu_header,</div>
|
|
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  <span class="keywordflow">if</span> (frame_header_.seen_frame_header)</div>
|
|
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  </div>
|
|
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  frame_header_.seen_frame_header = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  RCHECK(ParseUncompressedHeader(obu_header, reader));</div>
|
|
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  <span class="keywordflow">if</span> (frame_header_.show_existing_frame) {</div>
|
|
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  DecodeFrameWrapup();</div>
|
|
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  frame_header_.seen_frame_header = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  frame_header_.seen_frame_header = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  }</div>
|
|
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span> }</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="comment">// 5.9.2. Uncompressed header syntax.</span></div>
|
|
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span> <span class="keywordtype">bool</span> AV1Parser::ParseUncompressedHeader(<span class="keyword">const</span> ObuHeader& obu_header,</div>
|
|
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  <span class="keywordtype">int</span> id_len = 0;</div>
|
|
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="keywordflow">if</span> (sequence_header_.frame_id_numbers_present_flag) {</div>
|
|
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  id_len = sequence_header_.additional_frame_id_length_minus_1 + 1 +</div>
|
|
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  sequence_header_.delta_frame_id_length_minus_2 + 2;</div>
|
|
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  }</div>
|
|
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  </div>
|
|
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  <span class="keywordtype">bool</span> frame_is_intra = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  <span class="keywordtype">bool</span> show_frame = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <span class="keywordtype">bool</span> showable_frame = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  <span class="keywordtype">bool</span> error_resilient_mode = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  </div>
|
|
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  <span class="keywordflow">if</span> (sequence_header_.reduced_still_picture_header) {</div>
|
|
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  frame_header_.show_existing_frame = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  frame_header_.frame_type = KEY_FRAME;</div>
|
|
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  frame_is_intra = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  show_frame = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  showable_frame = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  RCHECK(reader->ReadBits(1, &frame_header_.show_existing_frame));</div>
|
|
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  <span class="keywordflow">if</span> (frame_header_.show_existing_frame) {</div>
|
|
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  RCHECK(reader->ReadBits(3, &frame_header_.frame_to_show_map_idx));</div>
|
|
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <span class="keywordflow">if</span> (sequence_header_.decoder_model_info_present_flag &&</div>
|
|
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  !sequence_header_.timing_info.equal_picture_interval) {</div>
|
|
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  RCHECK(SkipTemporalPointInfo(reader));</div>
|
|
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  }</div>
|
|
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  frame_header_.refresh_frame_flags = 0;</div>
|
|
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  <span class="keywordflow">if</span> (sequence_header_.frame_id_numbers_present_flag) {</div>
|
|
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <span class="comment">// Skip display_frame_id.</span></div>
|
|
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  RCHECK(reader->SkipBits(id_len));</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>  frame_header_.frame_type =</div>
|
|
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  reference_frames_[frame_header_.frame_to_show_map_idx].frame_type;</div>
|
|
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  <span class="keywordflow">if</span> (frame_header_.frame_type == KEY_FRAME) {</div>
|
|
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  frame_header_.refresh_frame_flags = kAllFrames;</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="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  }</div>
|
|
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  </div>
|
|
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  RCHECK(reader->ReadBits(2, &frame_header_.frame_type));</div>
|
|
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  frame_is_intra = frame_header_.frame_type == INTRA_ONLY_FRAME ||</div>
|
|
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  frame_header_.frame_type == KEY_FRAME;</div>
|
|
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  RCHECK(reader->ReadBits(1, &show_frame));</div>
|
|
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  <span class="keywordflow">if</span> (show_frame && sequence_header_.decoder_model_info_present_flag &&</div>
|
|
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  !sequence_header_.timing_info.equal_picture_interval) {</div>
|
|
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  RCHECK(SkipTemporalPointInfo(reader));</div>
|
|
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  }</div>
|
|
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  <span class="keywordflow">if</span> (show_frame)</div>
|
|
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  showable_frame = frame_header_.frame_type != KEY_FRAME;</div>
|
|
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  RCHECK(reader->ReadBits(1, &showable_frame));</div>
|
|
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  </div>
|
|
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  <span class="keywordflow">if</span> (frame_header_.frame_type == SWITCH_FRAME ||</div>
|
|
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  (frame_header_.frame_type == KEY_FRAME && show_frame)) {</div>
|
|
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  error_resilient_mode = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  RCHECK(reader->ReadBits(1, &error_resilient_mode));</div>
|
|
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  }</div>
|
|
<div class="line"><a name="l00700"></a><span class="lineno"> 700</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>  <span class="keywordflow">if</span> (frame_header_.frame_type == KEY_FRAME && show_frame) {</div>
|
|
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kNumRefFrames; i++) {</div>
|
|
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  reference_frames_[i].order_hint = 0;</div>
|
|
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  }</div>
|
|
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  }</div>
|
|
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  </div>
|
|
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  <span class="keywordtype">bool</span> disable_cdf_update = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  RCHECK(reader->ReadBits(1, &disable_cdf_update));</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>  <span class="keywordtype">bool</span> allow_screen_content_tools = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  <span class="keywordflow">if</span> (sequence_header_.seq_force_screen_content_tools ==</div>
|
|
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  kSelectScreenContentTools) {</div>
|
|
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  RCHECK(reader->ReadBits(1, &allow_screen_content_tools));</div>
|
|
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  allow_screen_content_tools =</div>
|
|
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  sequence_header_.seq_force_screen_content_tools != 0;</div>
|
|
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  }</div>
|
|
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  </div>
|
|
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <span class="keywordtype">int</span> force_integer_mv = 0;</div>
|
|
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  <span class="keywordflow">if</span> (allow_screen_content_tools) {</div>
|
|
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  <span class="keywordflow">if</span> (sequence_header_.seq_force_integer_mv == kSelectIntegerMv)</div>
|
|
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  RCHECK(reader->ReadBits(1, &force_integer_mv));</div>
|
|
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  force_integer_mv = sequence_header_.seq_force_integer_mv;</div>
|
|
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  }</div>
|
|
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  <span class="keywordflow">if</span> (frame_is_intra)</div>
|
|
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  force_integer_mv = 1;</div>
|
|
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  </div>
|
|
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  <span class="keywordflow">if</span> (sequence_header_.frame_id_numbers_present_flag) {</div>
|
|
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  <span class="comment">// Skip current_frame_id.</span></div>
|
|
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  RCHECK(reader->SkipBits(id_len));</div>
|
|
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  }</div>
|
|
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  </div>
|
|
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  <span class="keywordtype">bool</span> frame_size_override_flag = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <span class="keywordflow">if</span> (frame_header_.frame_type == SWITCH_FRAME)</div>
|
|
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  frame_size_override_flag = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sequence_header_.reduced_still_picture_header)</div>
|
|
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  frame_size_override_flag = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  RCHECK(reader->ReadBits(1, &frame_size_override_flag));</div>
|
|
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  </div>
|
|
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  RCHECK(reader->ReadBits(sequence_header_.order_hint_bits,</div>
|
|
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  &frame_header_.order_hint));</div>
|
|
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  <span class="keywordtype">int</span> primary_ref_frame = 0;</div>
|
|
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  <span class="keywordflow">if</span> (frame_is_intra || error_resilient_mode) {</div>
|
|
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  primary_ref_frame = kPrimaryRefNone;</div>
|
|
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  RCHECK(reader->ReadBits(3, &primary_ref_frame));</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="keywordflow">if</span> (sequence_header_.decoder_model_info_present_flag) {</div>
|
|
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  <span class="keywordtype">bool</span> buffer_removal_time_present_flag = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  RCHECK(reader->ReadBits(1, &buffer_removal_time_present_flag));</div>
|
|
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  <span class="keywordflow">if</span> (buffer_removal_time_present_flag) {</div>
|
|
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> op_num = 0;</div>
|
|
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  op_num <= sequence_header_.operating_points_cnt_minus_1; op_num++) {</div>
|
|
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  <span class="keywordflow">if</span> (sequence_header_.decoder_model_present_for_this_op[op_num]) {</div>
|
|
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> op_pt_idc = sequence_header_.operating_point_idc[op_num];</div>
|
|
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> in_temporal_layer =</div>
|
|
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  (op_pt_idc >> obu_header.extension_header.temporal_id) & 1;</div>
|
|
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> in_spatial_layer =</div>
|
|
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  (op_pt_idc >> (obu_header.extension_header.spatial_id + 8)) & 1;</div>
|
|
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  <span class="keywordflow">if</span> (op_pt_idc == 0 || (in_temporal_layer && in_spatial_layer)) {</div>
|
|
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  <span class="comment">// Skip buffer_removal_time[ opNum ].</span></div>
|
|
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  RCHECK(reader->SkipBits(sequence_header_.decoder_model_info</div>
|
|
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  .buffer_removal_time_length_minus_1 +</div>
|
|
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  1));</div>
|
|
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  }</div>
|
|
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  }</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>  }</div>
|
|
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  }</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>  <span class="keywordtype">bool</span> allow_high_precision_mv = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  <span class="keywordtype">bool</span> allow_intrabc = <span class="keyword">false</span>;</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>  <span class="keywordflow">if</span> (frame_header_.frame_type == SWITCH_FRAME ||</div>
|
|
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  (frame_header_.frame_type == KEY_FRAME && show_frame)) {</div>
|
|
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  frame_header_.refresh_frame_flags = kAllFrames;</div>
|
|
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  RCHECK(reader->ReadBits(8, &frame_header_.refresh_frame_flags));</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> (!frame_is_intra || frame_header_.refresh_frame_flags != kAllFrames) {</div>
|
|
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  <span class="keywordflow">if</span> (error_resilient_mode && sequence_header_.enable_order_hint) {</div>
|
|
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kNumRefFrames; i++) {</div>
|
|
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  <span class="comment">// Skip ref_order_hint[ i ].</span></div>
|
|
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  RCHECK(reader->SkipBits(sequence_header_.order_hint_bits));</div>
|
|
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  }</div>
|
|
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  }</div>
|
|
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  }</div>
|
|
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  </div>
|
|
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  <span class="keywordflow">if</span> (frame_is_intra) {</div>
|
|
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  RCHECK(ParseFrameSize(frame_size_override_flag, reader));</div>
|
|
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  RCHECK(ParseRenderSize(reader));</div>
|
|
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  <span class="keywordflow">if</span> (allow_screen_content_tools &&</div>
|
|
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  frame_header_.upscaled_width == frame_header_.frame_width)</div>
|
|
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>  RCHECK(reader->ReadBits(1, &allow_intrabc));</div>
|
|
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  <span class="keywordtype">bool</span> frame_refs_short_signaling = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  <span class="keywordflow">if</span> (sequence_header_.enable_order_hint) {</div>
|
|
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  RCHECK(reader->ReadBits(1, &frame_refs_short_signaling));</div>
|
|
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  <span class="keywordflow">if</span> (frame_refs_short_signaling) {</div>
|
|
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  <span class="keywordtype">int</span> last_frame_idx = 0;</div>
|
|
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  RCHECK(reader->ReadBits(3, &last_frame_idx));</div>
|
|
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  <span class="keywordtype">int</span> gold_frame_idx = 0;</div>
|
|
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  RCHECK(reader->ReadBits(3, &gold_frame_idx));</div>
|
|
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  RCHECK(SetFrameRefs(last_frame_idx, gold_frame_idx));</div>
|
|
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  }</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>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kRefsPerFrame; i++) {</div>
|
|
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  <span class="keywordflow">if</span> (!frame_refs_short_signaling)</div>
|
|
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  RCHECK(reader->ReadBits(3, &frame_header_.ref_frame_idx[i]));</div>
|
|
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  <span class="keywordflow">if</span> (sequence_header_.frame_id_numbers_present_flag) {</div>
|
|
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  <span class="comment">// Skip delta_frame_id_minus_1.</span></div>
|
|
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  RCHECK(reader->SkipBits(sequence_header_.delta_frame_id_length_minus_2 +</div>
|
|
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  2));</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>  }</div>
|
|
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  <span class="keywordflow">if</span> (frame_size_override_flag && !error_resilient_mode) {</div>
|
|
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  RCHECK(ParseFrameSizeWithRefs(frame_size_override_flag, reader));</div>
|
|
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  RCHECK(ParseFrameSize(frame_size_override_flag, reader));</div>
|
|
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  RCHECK(ParseRenderSize(reader));</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>  </div>
|
|
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  <span class="keywordflow">if</span> (force_integer_mv)</div>
|
|
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  allow_high_precision_mv = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  RCHECK(reader->ReadBits(1, &allow_high_precision_mv));</div>
|
|
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  </div>
|
|
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  RCHECK(SkipInterpolationFilter(reader));</div>
|
|
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  <span class="comment">// Skip is_motion_mode_switchable.</span></div>
|
|
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  RCHECK(reader->SkipBits(1));</div>
|
|
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  <span class="keywordflow">if</span> (!error_resilient_mode && sequence_header_.enable_ref_frame_mvs) {</div>
|
|
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  <span class="comment">// Skip use_ref_frame_mvs.</span></div>
|
|
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>  RCHECK(reader->SkipBits(1));</div>
|
|
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  }</div>
|
|
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  }</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="keywordflow">if</span> (!sequence_header_.reduced_still_picture_header && !disable_cdf_update) {</div>
|
|
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  <span class="comment">// Skip disable_frame_end_update_cdf.</span></div>
|
|
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  RCHECK(reader->SkipBits(1));</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>  </div>
|
|
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  RCHECK(ParseTileInfo(reader));</div>
|
|
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  RCHECK(ParseQuantizationParams(reader));</div>
|
|
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  RCHECK(ParseSegmentationParams(primary_ref_frame, reader));</div>
|
|
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  </div>
|
|
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <span class="keywordtype">bool</span> delta_q_present = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  RCHECK(SkipDeltaQParams(reader, &delta_q_present));</div>
|
|
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  RCHECK(SkipDeltaLfParams(delta_q_present, allow_intrabc, reader));</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>  <span class="keyword">const</span> <span class="keyword">auto</span>& quantization_params = frame_header_.quantization_params;</div>
|
|
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  <span class="keywordtype">bool</span> coded_lossless = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> segment_id = 0; segment_id < kMaxSegments; segment_id++) {</div>
|
|
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> qindex = GetQIndex(<span class="keyword">true</span>, segment_id);</div>
|
|
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> lossless = qindex == 0 && quantization_params.delta_qydc == 0 &&</div>
|
|
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  quantization_params.delta_quac == 0 &&</div>
|
|
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  quantization_params.delta_qudc == 0 &&</div>
|
|
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  quantization_params.delta_qvac == 0 &&</div>
|
|
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  quantization_params.delta_qvdc == 0;</div>
|
|
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  <span class="keywordflow">if</span> (!lossless)</div>
|
|
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span>  coded_lossless = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  }</div>
|
|
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> all_lossless = coded_lossless && (frame_header_.frame_width ==</div>
|
|
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  frame_header_.upscaled_width);</div>
|
|
<div class="line"><a name="l00867"></a><span class="lineno"> 867</span>  </div>
|
|
<div class="line"><a name="l00868"></a><span class="lineno"> 868</span>  RCHECK(ParseLoopFilterParams(coded_lossless, allow_intrabc, reader));</div>
|
|
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  RCHECK(ParseCdefParams(coded_lossless, allow_intrabc, reader));</div>
|
|
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span>  RCHECK(ParseLrParams(all_lossless, allow_intrabc, reader));</div>
|
|
<div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  RCHECK(SkipTxMode(coded_lossless, reader));</div>
|
|
<div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  <span class="keywordtype">bool</span> reference_select = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  RCHECK(ParseFrameReferenceMode(frame_is_intra, reader, &reference_select));</div>
|
|
<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  RCHECK(SkipSkipModeParams(frame_is_intra, reference_select, reader));</div>
|
|
<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  </div>
|
|
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  <span class="keywordtype">bool</span> allow_warped_motion = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  <span class="keywordflow">if</span> (frame_is_intra || error_resilient_mode ||</div>
|
|
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  !sequence_header_.enable_warped_motion) {</div>
|
|
<div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  allow_warped_motion = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00880"></a><span class="lineno"> 880</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span>  RCHECK(reader->ReadBits(1, &allow_warped_motion));</div>
|
|
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span>  }</div>
|
|
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  <span class="comment">// Skip reduced_tx_set.</span></div>
|
|
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  RCHECK(reader->SkipBits(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>  RCHECK(</div>
|
|
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  SkipGlobalMotionParams(frame_is_intra, allow_high_precision_mv, reader));</div>
|
|
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  RCHECK(SkipFilmGrainParams(show_frame, showable_frame, reader));</div>
|
|
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span> }</div>
|
|
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  </div>
|
|
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span> <span class="comment">// 5.9.3. Get relative distance function.</span></div>
|
|
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span> <span class="keywordtype">int</span> AV1Parser::GetRelativeDist(<span class="keywordtype">int</span> a, <span class="keywordtype">int</span> b) {</div>
|
|
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="keywordflow">if</span> (!sequence_header_.enable_order_hint)</div>
|
|
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  <span class="keywordflow">return</span> 0;</div>
|
|
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  <span class="keywordtype">int</span> diff = a - b;</div>
|
|
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> m = 1 << (sequence_header_.order_hint_bits - 1);</div>
|
|
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  diff = (diff & (m - 1)) - (diff & m);</div>
|
|
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  <span class="keywordflow">return</span> diff;</div>
|
|
<div class="line"><a name="l00900"></a><span class="lineno"> 900</span> }</div>
|
|
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  </div>
|
|
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span> <span class="comment">// 5.9.5. Frame size syntax.</span></div>
|
|
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span> <span class="keywordtype">bool</span> AV1Parser::ParseFrameSize(<span class="keywordtype">bool</span> frame_size_override_flag,</div>
|
|
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  <span class="keywordflow">if</span> (frame_size_override_flag) {</div>
|
|
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  <span class="keywordtype">int</span> frame_width_minus_1 = 0;</div>
|
|
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  RCHECK(reader->ReadBits(sequence_header_.frame_width_bits_minus_1 + 1,</div>
|
|
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  &frame_width_minus_1));</div>
|
|
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  <span class="keywordtype">int</span> frame_height_minus_1 = 0;</div>
|
|
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  RCHECK(reader->ReadBits(sequence_header_.frame_height_bits_minus_1 + 1,</div>
|
|
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  &frame_height_minus_1));</div>
|
|
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  frame_header_.frame_width = frame_width_minus_1 + 1;</div>
|
|
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  frame_header_.frame_height = frame_height_minus_1 + 1;</div>
|
|
<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00915"></a><span class="lineno"> 915</span>  frame_header_.frame_width = sequence_header_.max_frame_width_minus_1 + 1;</div>
|
|
<div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  frame_header_.frame_height = sequence_header_.max_frame_height_minus_1 + 1;</div>
|
|
<div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  }</div>
|
|
<div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  RCHECK(ParseSuperresParams(reader));</div>
|
|
<div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  ComputeImageSize();</div>
|
|
<div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00921"></a><span class="lineno"> 921</span> }</div>
|
|
<div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  </div>
|
|
<div class="line"><a name="l00923"></a><span class="lineno"> 923</span> <span class="comment">// 5.9.6. Render size syntax.</span></div>
|
|
<div class="line"><a name="l00924"></a><span class="lineno"> 924</span> <span class="keywordtype">bool</span> AV1Parser::ParseRenderSize(BitReader* reader) {</div>
|
|
<div class="line"><a name="l00925"></a><span class="lineno"> 925</span>  <span class="keywordtype">bool</span> render_and_frame_size_different = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  RCHECK(reader->ReadBits(1, &render_and_frame_size_different));</div>
|
|
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  <span class="keywordflow">if</span> (render_and_frame_size_different) {</div>
|
|
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  <span class="keywordtype">int</span> render_width_minus_1 = 0;</div>
|
|
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  RCHECK(reader->ReadBits(16, &render_width_minus_1));</div>
|
|
<div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  <span class="keywordtype">int</span> render_height_minus_1 = 0;</div>
|
|
<div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  RCHECK(reader->ReadBits(16, &render_height_minus_1));</div>
|
|
<div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  frame_header_.render_width = render_width_minus_1 + 1;</div>
|
|
<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  frame_header_.render_height = render_height_minus_1 + 1;</div>
|
|
<div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  frame_header_.render_width = frame_header_.upscaled_width;</div>
|
|
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  frame_header_.render_height = frame_header_.frame_height;</div>
|
|
<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  }</div>
|
|
<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00939"></a><span class="lineno"> 939</span> }</div>
|
|
<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  </div>
|
|
<div class="line"><a name="l00941"></a><span class="lineno"> 941</span> <span class="comment">// 5.9.7. Frame size with refs syntax.</span></div>
|
|
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span> <span class="keywordtype">bool</span> AV1Parser::ParseFrameSizeWithRefs(<span class="keywordtype">bool</span> frame_size_override_flag,</div>
|
|
<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  <span class="keywordtype">bool</span> found_ref = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kRefsPerFrame; i++) {</div>
|
|
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  RCHECK(reader->ReadBits(1, &found_ref));</div>
|
|
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  <span class="keywordflow">if</span> (found_ref) {</div>
|
|
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  <span class="keyword">const</span> ReferenceFrame& reference_frame =</div>
|
|
<div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  reference_frames_[frame_header_.ref_frame_idx[i]];</div>
|
|
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  frame_header_.upscaled_width = reference_frame.upscaled_width;</div>
|
|
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  frame_header_.frame_width = frame_header_.upscaled_width;</div>
|
|
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  frame_header_.frame_height = reference_frame.frame_height;</div>
|
|
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  frame_header_.render_width = reference_frame.render_width;</div>
|
|
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  frame_header_.render_height = reference_frame.render_height;</div>
|
|
<div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00956"></a><span class="lineno"> 956</span>  }</div>
|
|
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  }</div>
|
|
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span>  <span class="keywordflow">if</span> (!found_ref) {</div>
|
|
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  RCHECK(ParseFrameSize(frame_size_override_flag, reader));</div>
|
|
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span>  RCHECK(ParseRenderSize(reader));</div>
|
|
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  RCHECK(ParseSuperresParams(reader));</div>
|
|
<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  ComputeImageSize();</div>
|
|
<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>  }</div>
|
|
<div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00966"></a><span class="lineno"> 966</span> }</div>
|
|
<div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  </div>
|
|
<div class="line"><a name="l00968"></a><span class="lineno"> 968</span> <span class="comment">// 5.9.8. Superres params syntax.</span></div>
|
|
<div class="line"><a name="l00969"></a><span class="lineno"> 969</span> <span class="keywordtype">bool</span> AV1Parser::ParseSuperresParams(BitReader* reader) {</div>
|
|
<div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kSuperresNum = 8;</div>
|
|
<div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kSuperresDenomMin = 9;</div>
|
|
<div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kSuperresDenomBits = 3;</div>
|
|
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  </div>
|
|
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span>  <span class="keywordtype">bool</span> use_superres = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00975"></a><span class="lineno"> 975</span>  <span class="keywordflow">if</span> (sequence_header_.enable_superres)</div>
|
|
<div class="line"><a name="l00976"></a><span class="lineno"> 976</span>  RCHECK(reader->ReadBits(1, &use_superres));</div>
|
|
<div class="line"><a name="l00977"></a><span class="lineno"> 977</span>  </div>
|
|
<div class="line"><a name="l00978"></a><span class="lineno"> 978</span>  <span class="keywordtype">int</span> superres_denom = 0;</div>
|
|
<div class="line"><a name="l00979"></a><span class="lineno"> 979</span>  <span class="keywordflow">if</span> (use_superres) {</div>
|
|
<div class="line"><a name="l00980"></a><span class="lineno"> 980</span>  <span class="keywordtype">int</span> coded_denom = 0;</div>
|
|
<div class="line"><a name="l00981"></a><span class="lineno"> 981</span>  RCHECK(reader->ReadBits(kSuperresDenomBits, &coded_denom));</div>
|
|
<div class="line"><a name="l00982"></a><span class="lineno"> 982</span>  superres_denom = coded_denom + kSuperresDenomMin;</div>
|
|
<div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  superres_denom = kSuperresNum;</div>
|
|
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  }</div>
|
|
<div class="line"><a name="l00986"></a><span class="lineno"> 986</span>  </div>
|
|
<div class="line"><a name="l00987"></a><span class="lineno"> 987</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> upscaled_width = frame_header_.frame_width;</div>
|
|
<div class="line"><a name="l00988"></a><span class="lineno"> 988</span>  frame_header_.upscaled_width =</div>
|
|
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  (upscaled_width * kSuperresNum + superres_denom / 2) / superres_denom;</div>
|
|
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span> }</div>
|
|
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  </div>
|
|
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span> <span class="comment">// 5.9.9. Compute image size function.</span></div>
|
|
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span> <span class="keywordtype">void</span> AV1Parser::ComputeImageSize() {</div>
|
|
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  frame_header_.mi_cols = 2 * ((frame_header_.frame_width + 7) >> 3);</div>
|
|
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  frame_header_.mi_rows = 2 * ((frame_header_.frame_height + 7) >> 3);</div>
|
|
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span> }</div>
|
|
<div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  </div>
|
|
<div class="line"><a name="l00999"></a><span class="lineno"> 999</span> <span class="comment">// 5.9.10. Interpolation filter syntax.</span></div>
|
|
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span> <span class="keywordtype">bool</span> AV1Parser::SkipInterpolationFilter(BitReader* reader) {</div>
|
|
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  <span class="comment">// SKip is_filter_switchable, interpolation_filter.</span></div>
|
|
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  RCHECK(reader->SkipBitsConditional(<span class="keyword">false</span>, 2));</div>
|
|
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span> }</div>
|
|
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  </div>
|
|
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span> <span class="comment">// 5.9.11. Loop filter parms syntax.</span></div>
|
|
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span> <span class="keywordtype">bool</span> AV1Parser::ParseLoopFilterParams(<span class="keywordtype">bool</span> coded_lossless,</div>
|
|
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>  <span class="keywordtype">bool</span> allow_intrabc,</div>
|
|
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>  <span class="keywordflow">if</span> (coded_lossless || allow_intrabc)</div>
|
|
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>  </div>
|
|
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>  <span class="keywordtype">int</span> loop_filter_level[] = {0, 0};</div>
|
|
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>  RCHECK(reader->ReadBits(6, &loop_filter_level[0]));</div>
|
|
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>  RCHECK(reader->ReadBits(6, &loop_filter_level[1]));</div>
|
|
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>  <span class="keywordflow">if</span> (sequence_header_.color_config.num_planes > 1) {</div>
|
|
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  <span class="keywordflow">if</span> (loop_filter_level[0] || loop_filter_level[1]) {</div>
|
|
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  <span class="comment">// Skip loop_filter_level[2], loop_filter_level[3].</span></div>
|
|
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  RCHECK(reader->SkipBits(6 + 6));</div>
|
|
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  }</div>
|
|
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  }</div>
|
|
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  <span class="comment">// Skip loop_filter_sharpness.</span></div>
|
|
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  RCHECK(reader->SkipBits(3));</div>
|
|
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  <span class="keywordtype">bool</span> loop_filter_delta_enabled = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  RCHECK(reader->ReadBits(1, &loop_filter_delta_enabled));</div>
|
|
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  <span class="keywordflow">if</span> (loop_filter_delta_enabled) {</div>
|
|
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  <span class="keywordtype">bool</span> loop_filter_delta_update = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  RCHECK(reader->ReadBits(1, &loop_filter_delta_update));</div>
|
|
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  <span class="keywordflow">if</span> (loop_filter_delta_update) {</div>
|
|
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kTotalRefsPerFrame = 8;</div>
|
|
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kTotalRefsPerFrame; i++) {</div>
|
|
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  <span class="comment">// Skip update_ref_delta, loop_filter_ref_delta[ i ].</span></div>
|
|
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  RCHECK(reader->SkipBitsConditional(<span class="keyword">true</span>, 1 + 6));</div>
|
|
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  }</div>
|
|
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < 2; i++) {</div>
|
|
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  <span class="comment">// Skip update_mode_delta, loop_filter_mode_delta[ i ].</span></div>
|
|
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  RCHECK(reader->SkipBitsConditional(<span class="keyword">true</span>, 1 + 6));</div>
|
|
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>  }</div>
|
|
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  }</div>
|
|
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>  }</div>
|
|
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span> }</div>
|
|
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>  </div>
|
|
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span> <span class="comment">// 5.9.12. Quantization params syntax.</span></div>
|
|
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span> <span class="keywordtype">bool</span> AV1Parser::ParseQuantizationParams(BitReader* reader) {</div>
|
|
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  QuantizationParams& quantization_params = frame_header_.quantization_params;</div>
|
|
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  </div>
|
|
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>  RCHECK(reader->ReadBits(8, &quantization_params.base_q_idx));</div>
|
|
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>  RCHECK(ReadDeltaQ(reader, &quantization_params.delta_qydc));</div>
|
|
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>  </div>
|
|
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  <span class="keyword">const</span> ColorConfig& color_config = sequence_header_.color_config;</div>
|
|
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>  <span class="keywordflow">if</span> (color_config.num_planes > 1) {</div>
|
|
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  <span class="keywordtype">bool</span> diff_uv_delta = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  <span class="keywordflow">if</span> (color_config.separate_uv_delta_q)</div>
|
|
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>  RCHECK(reader->ReadBits(1, &diff_uv_delta));</div>
|
|
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>  RCHECK(ReadDeltaQ(reader, &quantization_params.delta_qudc));</div>
|
|
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  RCHECK(ReadDeltaQ(reader, &quantization_params.delta_quac));</div>
|
|
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  <span class="keywordflow">if</span> (diff_uv_delta) {</div>
|
|
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  RCHECK(ReadDeltaQ(reader, &quantization_params.delta_qvdc));</div>
|
|
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  RCHECK(ReadDeltaQ(reader, &quantization_params.delta_qvac));</div>
|
|
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  quantization_params.delta_qvdc = quantization_params.delta_qudc;</div>
|
|
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  quantization_params.delta_qvac = quantization_params.delta_quac;</div>
|
|
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>  }</div>
|
|
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>  quantization_params.delta_qudc = 0;</div>
|
|
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>  quantization_params.delta_quac = 0;</div>
|
|
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>  quantization_params.delta_qvdc = 0;</div>
|
|
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  quantization_params.delta_qvac = 0;</div>
|
|
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  }</div>
|
|
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  <span class="keywordtype">bool</span> using_qmatrix = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  RCHECK(reader->ReadBits(1, &using_qmatrix));</div>
|
|
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  <span class="keywordflow">if</span> (using_qmatrix) {</div>
|
|
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  <span class="comment">// Skip qm_y, qm_u.</span></div>
|
|
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  RCHECK(reader->SkipBits(4 + 4));</div>
|
|
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  <span class="keywordflow">if</span> (color_config.separate_uv_delta_q) {</div>
|
|
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  <span class="comment">// Skip qm_v.</span></div>
|
|
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  RCHECK(reader->SkipBits(4));</div>
|
|
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  }</div>
|
|
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  }</div>
|
|
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span> }</div>
|
|
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  </div>
|
|
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span> <span class="comment">// 5.9.13. Delta quantizer syntax.</span></div>
|
|
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span> <span class="keywordtype">bool</span> AV1Parser::ReadDeltaQ(BitReader* reader, <span class="keywordtype">int</span>* delta_q) {</div>
|
|
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  <span class="keywordtype">bool</span> delta_coded = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  RCHECK(reader->ReadBits(1, &delta_coded));</div>
|
|
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  <span class="keywordflow">if</span> (delta_coded)</div>
|
|
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  RCHECK(ReadSu(1 + 6, reader, delta_q));</div>
|
|
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>  *delta_q = 0;</div>
|
|
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span> }</div>
|
|
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>  </div>
|
|
<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span> <span class="comment">// 5.9.14. Segmentation params syntax.</span></div>
|
|
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span> <span class="keywordtype">bool</span> AV1Parser::ParseSegmentationParams(<span class="keywordtype">int</span> primary_ref_frame,</div>
|
|
<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>  SegmentationParams& segmentation_params = frame_header_.segmentation_params;</div>
|
|
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>  </div>
|
|
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>  RCHECK(reader->ReadBits(1, &segmentation_params.segmentation_enabled));</div>
|
|
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>  <span class="keywordflow">if</span> (segmentation_params.segmentation_enabled) {</div>
|
|
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>  <span class="keywordtype">bool</span> segmentation_update_data = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>  <span class="keywordflow">if</span> (primary_ref_frame == kPrimaryRefNone) {</div>
|
|
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>  segmentation_update_data = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  <span class="comment">// Skip segmentation_update_map, segmentation_temporal_update.</span></div>
|
|
<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>  RCHECK(reader->SkipBitsConditional(<span class="keyword">true</span>, 1));</div>
|
|
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>  RCHECK(reader->ReadBits(1, &segmentation_update_data));</div>
|
|
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  }</div>
|
|
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  <span class="keywordflow">if</span> (segmentation_update_data) {</div>
|
|
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kSegmentationFeatureBits[kSegLvlMax] = {8, 6, 6, 6,</div>
|
|
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  6, 3, 0, 0};</div>
|
|
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kSegmentationFeatureSigned[kSegLvlMax] = {1, 1, 1, 1,</div>
|
|
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  1, 0, 0, 0};</div>
|
|
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kMaxLoopFilter = 63;</div>
|
|
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kSegmentationFeatureMax[kSegLvlMax] = {255,</div>
|
|
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  kMaxLoopFilter,</div>
|
|
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>  kMaxLoopFilter,</div>
|
|
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>  kMaxLoopFilter,</div>
|
|
<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>  kMaxLoopFilter,</div>
|
|
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>  7,</div>
|
|
<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>  0,</div>
|
|
<div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>  0};</div>
|
|
<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>  </div>
|
|
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kMaxSegments; i++) {</div>
|
|
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < kSegLvlMax; j++) {</div>
|
|
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>  <span class="keywordtype">bool</span> feature_enabled = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>  RCHECK(reader->ReadBits(1, &feature_enabled));</div>
|
|
<div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>  segmentation_params.feature_enabled[i][j] = feature_enabled;</div>
|
|
<div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>  <span class="keywordtype">int</span> clipped_value = 0;</div>
|
|
<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>  <span class="keywordflow">if</span> (feature_enabled) {</div>
|
|
<div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> bits_to_read = kSegmentationFeatureBits[j];</div>
|
|
<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> limit = kSegmentationFeatureMax[j];</div>
|
|
<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>  <span class="keywordflow">if</span> (kSegmentationFeatureSigned[j]) {</div>
|
|
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>  <span class="keywordtype">int</span> feature_value = 0;</div>
|
|
<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>  RCHECK(ReadSu(1 + bits_to_read, reader, &feature_value));</div>
|
|
<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  clipped_value = Clip3(-limit, limit, feature_value);</div>
|
|
<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>  <span class="keywordtype">int</span> feature_value = 0;</div>
|
|
<div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>  RCHECK(reader->ReadBits(bits_to_read, &feature_value));</div>
|
|
<div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>  clipped_value = Clip3(0, limit, feature_value);</div>
|
|
<div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>  }</div>
|
|
<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>  }</div>
|
|
<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>  segmentation_params.feature_data[i][j] = clipped_value;</div>
|
|
<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>  }</div>
|
|
<div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>  }</div>
|
|
<div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>  }</div>
|
|
<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kMaxSegments; i++) {</div>
|
|
<div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < kSegLvlMax; j++) {</div>
|
|
<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>  segmentation_params.feature_enabled[i][j] = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>  segmentation_params.feature_data[i][j] = 0;</div>
|
|
<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>  }</div>
|
|
<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>  }</div>
|
|
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>  }</div>
|
|
<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01157"></a><span class="lineno"> 1157</span> }</div>
|
|
<div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>  </div>
|
|
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span> <span class="comment">// 5.9.15. Tile info syntax.</span></div>
|
|
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</span> <span class="keywordtype">bool</span> AV1Parser::ParseTileInfo(BitReader* reader) {</div>
|
|
<div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kMaxTileWidth = 4096;</div>
|
|
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kMaxTileArea = 4096 * 2304;</div>
|
|
<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kMaxTileRows = 64;</div>
|
|
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kMaxTileCols = 64;</div>
|
|
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>  </div>
|
|
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  TileInfo& tile_info = frame_header_.tile_info;</div>
|
|
<div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>  </div>
|
|
<div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> sb_cols = sequence_header_.use_128x128_superblock</div>
|
|
<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>  ? ((frame_header_.mi_cols + 31) >> 5)</div>
|
|
<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  : ((frame_header_.mi_cols + 15) >> 4);</div>
|
|
<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> sb_rows = sequence_header_.use_128x128_superblock</div>
|
|
<div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  ? ((frame_header_.mi_rows + 31) >> 5)</div>
|
|
<div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>  : ((frame_header_.mi_rows + 15) >> 4);</div>
|
|
<div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> sb_shift = sequence_header_.use_128x128_superblock ? 5 : 4;</div>
|
|
<div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> sb_size = sb_shift + 2;</div>
|
|
<div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> max_tile_width_sb = kMaxTileWidth >> sb_size;</div>
|
|
<div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>  <span class="keywordtype">int</span> max_tile_area_sb = kMaxTileArea >> (2 * sb_size);</div>
|
|
<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> min_log2_tile_cols = TileLog2(max_tile_width_sb, sb_cols);</div>
|
|
<div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> max_log2_tile_cols = TileLog2(1, std::min(sb_cols, kMaxTileCols));</div>
|
|
<div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> max_log2_tile_rows = TileLog2(1, std::min(sb_rows, kMaxTileRows));</div>
|
|
<div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> min_log2_tiles = std::max(</div>
|
|
<div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>  min_log2_tile_cols, TileLog2(max_tile_area_sb, sb_rows * sb_cols));</div>
|
|
<div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>  </div>
|
|
<div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>  <span class="keywordtype">bool</span> uniform_tile_spacing_flag = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>  RCHECK(reader->ReadBits(1, &uniform_tile_spacing_flag));</div>
|
|
<div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>  <span class="keywordflow">if</span> (uniform_tile_spacing_flag) {</div>
|
|
<div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>  tile_info.tile_cols_log2 = min_log2_tile_cols;</div>
|
|
<div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>  <span class="keywordflow">while</span> (tile_info.tile_cols_log2 < max_log2_tile_cols) {</div>
|
|
<div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>  <span class="keywordtype">bool</span> increment_tile_cols_log2 = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>  RCHECK(reader->ReadBits(1, &increment_tile_cols_log2));</div>
|
|
<div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>  <span class="keywordflow">if</span> (increment_tile_cols_log2)</div>
|
|
<div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>  tile_info.tile_cols_log2++;</div>
|
|
<div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  }</div>
|
|
<div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> tile_width_sb = (sb_cols + (1 << tile_info.tile_cols_log2) - 1) >></div>
|
|
<div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>  tile_info.tile_cols_log2;</div>
|
|
<div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>  <span class="keywordtype">int</span> i = 0;</div>
|
|
<div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> start_sb = 0; start_sb < sb_cols; start_sb += tile_width_sb) {</div>
|
|
<div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>  i += 1;</div>
|
|
<div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>  }</div>
|
|
<div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>  tile_info.tile_cols = i;</div>
|
|
<div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>  </div>
|
|
<div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> min_log2_tile_rows =</div>
|
|
<div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>  std::max(min_log2_tiles - tile_info.tile_cols_log2, 0);</div>
|
|
<div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>  tile_info.tile_rows_log2 = min_log2_tile_rows;</div>
|
|
<div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>  <span class="keywordflow">while</span> (tile_info.tile_rows_log2 < max_log2_tile_rows) {</div>
|
|
<div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>  <span class="keywordtype">bool</span> increment_tile_rows_log2 = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  RCHECK(reader->ReadBits(1, &increment_tile_rows_log2));</div>
|
|
<div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>  <span class="keywordflow">if</span> (increment_tile_rows_log2)</div>
|
|
<div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>  tile_info.tile_rows_log2++;</div>
|
|
<div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>  }</div>
|
|
<div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> tile_height_sb =</div>
|
|
<div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>  (sb_rows + (1 << tile_info.tile_rows_log2) - 1) >></div>
|
|
<div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>  tile_info.tile_rows_log2;</div>
|
|
<div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>  i = 0;</div>
|
|
<div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> start_sb = 0; start_sb < sb_rows; start_sb += tile_height_sb) {</div>
|
|
<div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>  i += 1;</div>
|
|
<div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>  }</div>
|
|
<div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>  tile_info.tile_rows = i;</div>
|
|
<div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>  <span class="keywordtype">int</span> widest_tile_sb = 0;</div>
|
|
<div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>  <span class="keywordtype">int</span> start_sb = 0;</div>
|
|
<div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>  <span class="keywordtype">int</span> i = 0;</div>
|
|
<div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>  <span class="keywordflow">for</span> (; start_sb < sb_cols; i++) {</div>
|
|
<div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> max_width = std::min(sb_cols - start_sb, max_tile_width_sb);</div>
|
|
<div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>  <span class="keywordtype">int</span> width_in_sbs_minus_1 = 0;</div>
|
|
<div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>  RCHECK(ReadNs(max_width, reader, &width_in_sbs_minus_1));</div>
|
|
<div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> size_sb = width_in_sbs_minus_1 + 1;</div>
|
|
<div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>  widest_tile_sb = std::max(size_sb, widest_tile_sb);</div>
|
|
<div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  start_sb += size_sb;</div>
|
|
<div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  }</div>
|
|
<div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  tile_info.tile_cols = i;</div>
|
|
<div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>  tile_info.tile_cols_log2 = TileLog2(1, tile_info.tile_cols);</div>
|
|
<div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  </div>
|
|
<div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>  <span class="keywordflow">if</span> (min_log2_tiles > 0)</div>
|
|
<div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>  max_tile_area_sb = (sb_rows * sb_cols) >> (min_log2_tiles + 1);</div>
|
|
<div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>  max_tile_area_sb = sb_rows * sb_cols;</div>
|
|
<div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> max_tile_height_sb =</div>
|
|
<div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  std::max(max_tile_area_sb / widest_tile_sb, 1);</div>
|
|
<div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>  </div>
|
|
<div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>  start_sb = 0;</div>
|
|
<div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>  i = 0;</div>
|
|
<div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>  <span class="keywordflow">for</span> (; start_sb < sb_rows; i++) {</div>
|
|
<div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> max_height = std::min(sb_rows - start_sb, max_tile_height_sb);</div>
|
|
<div class="line"><a name="l01249"></a><span class="lineno"> 1249</span>  <span class="keywordtype">int</span> height_in_sbs_minus_1 = 0;</div>
|
|
<div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>  RCHECK(ReadNs(max_height, reader, &height_in_sbs_minus_1));</div>
|
|
<div class="line"><a name="l01251"></a><span class="lineno"> 1251</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> size_sb = height_in_sbs_minus_1 + 1;</div>
|
|
<div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>  start_sb += size_sb;</div>
|
|
<div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>  }</div>
|
|
<div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>  tile_info.tile_rows = i;</div>
|
|
<div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>  tile_info.tile_rows_log2 = TileLog2(1, tile_info.tile_rows);</div>
|
|
<div class="line"><a name="l01256"></a><span class="lineno"> 1256</span>  }</div>
|
|
<div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>  <span class="keywordflow">if</span> (tile_info.tile_cols_log2 > 0 || tile_info.tile_rows_log2 > 0) {</div>
|
|
<div class="line"><a name="l01258"></a><span class="lineno"> 1258</span>  <span class="comment">// Skip context_update_tile_id.</span></div>
|
|
<div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>  RCHECK(</div>
|
|
<div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>  reader->SkipBits(tile_info.tile_rows_log2 + tile_info.tile_cols_log2));</div>
|
|
<div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>  <span class="keywordtype">int</span> tile_size_bytes_minus_1 = 0;</div>
|
|
<div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>  RCHECK(reader->ReadBits(2, &tile_size_bytes_minus_1));</div>
|
|
<div class="line"><a name="l01263"></a><span class="lineno"> 1263</span>  tile_info.tile_size_bytes = tile_size_bytes_minus_1 + 1;</div>
|
|
<div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>  }</div>
|
|
<div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01266"></a><span class="lineno"> 1266</span> }</div>
|
|
<div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>  </div>
|
|
<div class="line"><a name="l01268"></a><span class="lineno"> 1268</span> <span class="comment">// 5.9.17. Quantizer index delta parameters syntax.</span></div>
|
|
<div class="line"><a name="l01269"></a><span class="lineno"> 1269</span> <span class="keywordtype">bool</span> AV1Parser::SkipDeltaQParams(BitReader* reader, <span class="keywordtype">bool</span>* delta_q_present) {</div>
|
|
<div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>  *delta_q_present = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>  <span class="keywordflow">if</span> (frame_header_.quantization_params.base_q_idx > 0)</div>
|
|
<div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>  RCHECK(reader->ReadBits(1, delta_q_present));</div>
|
|
<div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>  <span class="keywordflow">if</span> (*delta_q_present) {</div>
|
|
<div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>  <span class="comment">// Skip delta_q_res.</span></div>
|
|
<div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>  RCHECK(reader->SkipBits(2));</div>
|
|
<div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>  }</div>
|
|
<div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01278"></a><span class="lineno"> 1278</span> }</div>
|
|
<div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>  </div>
|
|
<div class="line"><a name="l01280"></a><span class="lineno"> 1280</span> <span class="comment">// 5.9.18. Loop filter delta parameters syntax.</span></div>
|
|
<div class="line"><a name="l01281"></a><span class="lineno"> 1281</span> <span class="keywordtype">bool</span> AV1Parser::SkipDeltaLfParams(<span class="keywordtype">bool</span> delta_q_present,</div>
|
|
<div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>  <span class="keywordtype">bool</span> allow_intrabc,</div>
|
|
<div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>  <span class="keywordtype">bool</span> delta_lf_present = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>  <span class="keywordflow">if</span> (delta_q_present) {</div>
|
|
<div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>  <span class="keywordflow">if</span> (!allow_intrabc)</div>
|
|
<div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>  RCHECK(reader->ReadBits(1, &delta_lf_present));</div>
|
|
<div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>  <span class="keywordflow">if</span> (delta_lf_present) {</div>
|
|
<div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>  <span class="comment">// Skip delta_lf_res, delta_lf_multi.</span></div>
|
|
<div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>  RCHECK(reader->SkipBits(2 + 1));</div>
|
|
<div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>  }</div>
|
|
<div class="line"><a name="l01292"></a><span class="lineno"> 1292</span>  }</div>
|
|
<div class="line"><a name="l01293"></a><span class="lineno"> 1293</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01294"></a><span class="lineno"> 1294</span> }</div>
|
|
<div class="line"><a name="l01295"></a><span class="lineno"> 1295</span>  </div>
|
|
<div class="line"><a name="l01296"></a><span class="lineno"> 1296</span> <span class="comment">// 5.9.19. CDEF params syntax.</span></div>
|
|
<div class="line"><a name="l01297"></a><span class="lineno"> 1297</span> <span class="keywordtype">bool</span> AV1Parser::ParseCdefParams(<span class="keywordtype">bool</span> coded_lossless,</div>
|
|
<div class="line"><a name="l01298"></a><span class="lineno"> 1298</span>  <span class="keywordtype">bool</span> allow_intrabc,</div>
|
|
<div class="line"><a name="l01299"></a><span class="lineno"> 1299</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>  <span class="keywordflow">if</span> (coded_lossless || allow_intrabc || !sequence_header_.enable_cdef)</div>
|
|
<div class="line"><a name="l01301"></a><span class="lineno"> 1301</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01302"></a><span class="lineno"> 1302</span>  </div>
|
|
<div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>  <span class="comment">// Skip cdef_damping_minus_3.</span></div>
|
|
<div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>  RCHECK(reader->SkipBits(2));</div>
|
|
<div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>  <span class="keywordtype">int</span> cdef_bits = 0;</div>
|
|
<div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>  RCHECK(reader->ReadBits(2, &cdef_bits));</div>
|
|
<div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < (1 << cdef_bits); i++) {</div>
|
|
<div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>  <span class="comment">// Skip cdef_y_pri_strength[i], Skip cdef_y_sec_strength[i].</span></div>
|
|
<div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>  RCHECK(reader->SkipBits(4 + 2));</div>
|
|
<div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>  <span class="keywordflow">if</span> (sequence_header_.color_config.num_planes > 1) {</div>
|
|
<div class="line"><a name="l01311"></a><span class="lineno"> 1311</span>  <span class="comment">// Skip cdef_uv_pri_strength[i], Skip cdef_uv_sec_strength[i].</span></div>
|
|
<div class="line"><a name="l01312"></a><span class="lineno"> 1312</span>  RCHECK(reader->SkipBits(4 + 2));</div>
|
|
<div class="line"><a name="l01313"></a><span class="lineno"> 1313</span>  }</div>
|
|
<div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>  }</div>
|
|
<div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01316"></a><span class="lineno"> 1316</span> }</div>
|
|
<div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>  </div>
|
|
<div class="line"><a name="l01318"></a><span class="lineno"> 1318</span> <span class="comment">// 5.9.20. Loop restoration params syntax.</span></div>
|
|
<div class="line"><a name="l01319"></a><span class="lineno"> 1319</span> <span class="keywordtype">bool</span> AV1Parser::ParseLrParams(<span class="keywordtype">bool</span> all_lossless,</div>
|
|
<div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>  <span class="keywordtype">bool</span> allow_intrabc,</div>
|
|
<div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>  <span class="keywordflow">if</span> (all_lossless || allow_intrabc || !sequence_header_.enable_restoration)</div>
|
|
<div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>  </div>
|
|
<div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>  <span class="keyword">enum</span> FrameRestorationType {</div>
|
|
<div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>  RESTORE_NONE = 0,</div>
|
|
<div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>  RESTORE_SWITCHABLE = 3,</div>
|
|
<div class="line"><a name="l01328"></a><span class="lineno"> 1328</span>  RESTORE_WIENER = 1,</div>
|
|
<div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>  RESTORE_SGRPROJ = 2,</div>
|
|
<div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>  };</div>
|
|
<div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kRemapLrType[4] = {RESTORE_NONE, RESTORE_SWITCHABLE,</div>
|
|
<div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>  RESTORE_WIENER, RESTORE_SGRPROJ};</div>
|
|
<div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>  <span class="keywordtype">bool</span> uses_lr = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01334"></a><span class="lineno"> 1334</span>  <span class="keywordtype">bool</span> uses_chroma_lr = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < sequence_header_.color_config.num_planes; i++) {</div>
|
|
<div class="line"><a name="l01336"></a><span class="lineno"> 1336</span>  <span class="keywordtype">int</span> lr_type = 0;</div>
|
|
<div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>  RCHECK(reader->ReadBits(2, &lr_type));</div>
|
|
<div class="line"><a name="l01338"></a><span class="lineno"> 1338</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> frame_restoration_type = kRemapLrType[lr_type];</div>
|
|
<div class="line"><a name="l01339"></a><span class="lineno"> 1339</span>  <span class="keywordflow">if</span> (frame_restoration_type != RESTORE_NONE) {</div>
|
|
<div class="line"><a name="l01340"></a><span class="lineno"> 1340</span>  uses_lr = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>  <span class="keywordflow">if</span> (i > 0)</div>
|
|
<div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>  uses_chroma_lr = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>  }</div>
|
|
<div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>  }</div>
|
|
<div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>  </div>
|
|
<div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>  <span class="keywordflow">if</span> (uses_lr) {</div>
|
|
<div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>  <span class="keywordflow">if</span> (sequence_header_.use_128x128_superblock) {</div>
|
|
<div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>  <span class="comment">// Skip lr_unit_shift.</span></div>
|
|
<div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>  RCHECK(reader->SkipBits(1));</div>
|
|
<div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>  <span class="comment">// Skip lr_unit_shift, lr_unit_extra_shift.</span></div>
|
|
<div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>  RCHECK(reader->SkipBitsConditional(<span class="keyword">true</span>, 1));</div>
|
|
<div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>  }</div>
|
|
<div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>  <span class="keywordflow">if</span> (sequence_header_.color_config.subsampling_x &&</div>
|
|
<div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>  sequence_header_.color_config.subsampling_y && uses_chroma_lr) {</div>
|
|
<div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>  <span class="comment">// Skip lr_uv_shift.</span></div>
|
|
<div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>  RCHECK(reader->SkipBits(1));</div>
|
|
<div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>  }</div>
|
|
<div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>  }</div>
|
|
<div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01361"></a><span class="lineno"> 1361</span> }</div>
|
|
<div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>  </div>
|
|
<div class="line"><a name="l01363"></a><span class="lineno"> 1363</span> <span class="comment">// 5.9.21. TX mode syntax.</span></div>
|
|
<div class="line"><a name="l01364"></a><span class="lineno"> 1364</span> <span class="keywordtype">bool</span> AV1Parser::SkipTxMode(<span class="keywordtype">bool</span> coded_lossless, BitReader* reader) {</div>
|
|
<div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>  <span class="keywordflow">if</span> (!coded_lossless) {</div>
|
|
<div class="line"><a name="l01366"></a><span class="lineno"> 1366</span>  <span class="comment">// Skip tx_mode_select.</span></div>
|
|
<div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>  RCHECK(reader->SkipBits(1));</div>
|
|
<div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>  }</div>
|
|
<div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01370"></a><span class="lineno"> 1370</span> }</div>
|
|
<div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>  </div>
|
|
<div class="line"><a name="l01372"></a><span class="lineno"> 1372</span> <span class="comment">// 5.9.22. Skip mode params syntax.</span></div>
|
|
<div class="line"><a name="l01373"></a><span class="lineno"> 1373</span> <span class="keywordtype">bool</span> AV1Parser::SkipSkipModeParams(<span class="keywordtype">bool</span> frame_is_intra,</div>
|
|
<div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>  <span class="keywordtype">bool</span> reference_select,</div>
|
|
<div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>  <span class="keywordtype">bool</span> skip_mode_allowed = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>  <span class="keywordflow">if</span> (frame_is_intra || !reference_select ||</div>
|
|
<div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>  !sequence_header_.enable_order_hint) {</div>
|
|
<div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>  skip_mode_allowed = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>  <span class="keywordtype">int</span> forward_idx = -1;</div>
|
|
<div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>  <span class="keywordtype">int</span> forward_hint = 0;</div>
|
|
<div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>  <span class="keywordtype">int</span> backward_idx = -1;</div>
|
|
<div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>  <span class="keywordtype">int</span> backward_hint = 0;</div>
|
|
<div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kRefsPerFrame; i++) {</div>
|
|
<div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> ref_hint =</div>
|
|
<div class="line"><a name="l01387"></a><span class="lineno"> 1387</span>  reference_frames_[frame_header_.ref_frame_idx[i]].order_hint;</div>
|
|
<div class="line"><a name="l01388"></a><span class="lineno"> 1388</span>  <span class="keywordflow">if</span> (GetRelativeDist(ref_hint, frame_header_.order_hint) < 0) {</div>
|
|
<div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>  <span class="keywordflow">if</span> (forward_idx < 0 || GetRelativeDist(ref_hint, forward_hint) > 0) {</div>
|
|
<div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>  forward_idx = i;</div>
|
|
<div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>  forward_hint = ref_hint;</div>
|
|
<div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>  }</div>
|
|
<div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (GetRelativeDist(ref_hint, frame_header_.order_hint) > 0) {</div>
|
|
<div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>  <span class="keywordflow">if</span> (backward_idx < 0 || GetRelativeDist(ref_hint, backward_hint) < 0) {</div>
|
|
<div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>  backward_idx = i;</div>
|
|
<div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>  backward_hint = ref_hint;</div>
|
|
<div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>  }</div>
|
|
<div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>  }</div>
|
|
<div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>  }</div>
|
|
<div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>  <span class="keywordflow">if</span> (forward_idx < 0) {</div>
|
|
<div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>  skip_mode_allowed = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (backward_idx >= 0) {</div>
|
|
<div class="line"><a name="l01403"></a><span class="lineno"> 1403</span>  skip_mode_allowed = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>  <span class="keywordtype">int</span> second_forward_idx = -1;</div>
|
|
<div class="line"><a name="l01406"></a><span class="lineno"> 1406</span>  <span class="keywordtype">int</span> second_forward_hint = 0;</div>
|
|
<div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kRefsPerFrame; i++) {</div>
|
|
<div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> ref_hint =</div>
|
|
<div class="line"><a name="l01409"></a><span class="lineno"> 1409</span>  reference_frames_[frame_header_.ref_frame_idx[i]].order_hint;</div>
|
|
<div class="line"><a name="l01410"></a><span class="lineno"> 1410</span>  <span class="keywordflow">if</span> (GetRelativeDist(ref_hint, forward_hint) < 0) {</div>
|
|
<div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>  <span class="keywordflow">if</span> (second_forward_idx < 0 ||</div>
|
|
<div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>  GetRelativeDist(ref_hint, second_forward_hint) > 0) {</div>
|
|
<div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>  second_forward_idx = i;</div>
|
|
<div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>  second_forward_hint = ref_hint;</div>
|
|
<div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>  }</div>
|
|
<div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>  }</div>
|
|
<div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>  }</div>
|
|
<div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>  skip_mode_allowed = second_forward_idx >= 0;</div>
|
|
<div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>  }</div>
|
|
<div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>  }</div>
|
|
<div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>  </div>
|
|
<div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>  <span class="keywordflow">if</span> (skip_mode_allowed) {</div>
|
|
<div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>  <span class="comment">// Skip skip_mode_present.</span></div>
|
|
<div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>  RCHECK(reader->SkipBits(1));</div>
|
|
<div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>  }</div>
|
|
<div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01427"></a><span class="lineno"> 1427</span> }</div>
|
|
<div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>  </div>
|
|
<div class="line"><a name="l01429"></a><span class="lineno"> 1429</span> <span class="comment">// 5.9.23. Frame reference mode syntax.</span></div>
|
|
<div class="line"><a name="l01430"></a><span class="lineno"> 1430</span> <span class="keywordtype">bool</span> AV1Parser::ParseFrameReferenceMode(<span class="keywordtype">bool</span> frame_is_intra,</div>
|
|
<div class="line"><a name="l01431"></a><span class="lineno"> 1431</span>  BitReader* reader,</div>
|
|
<div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>  <span class="keywordtype">bool</span>* reference_select) {</div>
|
|
<div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>  <span class="keywordflow">if</span> (frame_is_intra)</div>
|
|
<div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>  *reference_select = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01435"></a><span class="lineno"> 1435</span>  <span class="keywordflow">else</span></div>
|
|
<div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>  RCHECK(reader->ReadBits(1, reference_select));</div>
|
|
<div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01438"></a><span class="lineno"> 1438</span> }</div>
|
|
<div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>  </div>
|
|
<div class="line"><a name="l01440"></a><span class="lineno"> 1440</span> <span class="comment">// 5.9.24. Global motion params syntax.</span></div>
|
|
<div class="line"><a name="l01441"></a><span class="lineno"> 1441</span> <span class="keywordtype">bool</span> AV1Parser::SkipGlobalMotionParams(<span class="keywordtype">bool</span> frame_is_intra,</div>
|
|
<div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>  <span class="keywordtype">bool</span> allow_high_precision_mv,</div>
|
|
<div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>  <span class="keywordflow">if</span> (frame_is_intra)</div>
|
|
<div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>  </div>
|
|
<div class="line"><a name="l01447"></a><span class="lineno"> 1447</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> ref = LAST_FRAME; ref <= ALTREF_FRAME; ref++) {</div>
|
|
<div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>  <span class="keywordtype">int</span> type = 0;</div>
|
|
<div class="line"><a name="l01449"></a><span class="lineno"> 1449</span>  </div>
|
|
<div class="line"><a name="l01450"></a><span class="lineno"> 1450</span>  <span class="keywordtype">bool</span> is_global = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01451"></a><span class="lineno"> 1451</span>  RCHECK(reader->ReadBits(1, &is_global));</div>
|
|
<div class="line"><a name="l01452"></a><span class="lineno"> 1452</span>  <span class="keywordflow">if</span> (is_global) {</div>
|
|
<div class="line"><a name="l01453"></a><span class="lineno"> 1453</span>  <span class="keywordtype">bool</span> is_rot_zoom = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01454"></a><span class="lineno"> 1454</span>  RCHECK(reader->ReadBits(1, &is_rot_zoom));</div>
|
|
<div class="line"><a name="l01455"></a><span class="lineno"> 1455</span>  <span class="keywordflow">if</span> (is_rot_zoom) {</div>
|
|
<div class="line"><a name="l01456"></a><span class="lineno"> 1456</span>  type = ROTZOOM;</div>
|
|
<div class="line"><a name="l01457"></a><span class="lineno"> 1457</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01458"></a><span class="lineno"> 1458</span>  <span class="keywordtype">bool</span> is_translation = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01459"></a><span class="lineno"> 1459</span>  RCHECK(reader->ReadBits(1, &is_translation));</div>
|
|
<div class="line"><a name="l01460"></a><span class="lineno"> 1460</span>  type = is_translation ? TRANSLATION : AFFINE;</div>
|
|
<div class="line"><a name="l01461"></a><span class="lineno"> 1461</span>  }</div>
|
|
<div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01463"></a><span class="lineno"> 1463</span>  type = IDENTITY;</div>
|
|
<div class="line"><a name="l01464"></a><span class="lineno"> 1464</span>  }</div>
|
|
<div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>  </div>
|
|
<div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>  <span class="keywordflow">if</span> (type >= ROTZOOM) {</div>
|
|
<div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>  RCHECK(SkipGlobalParam(type, ref, 2, allow_high_precision_mv, reader));</div>
|
|
<div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>  RCHECK(SkipGlobalParam(type, ref, 3, allow_high_precision_mv, reader));</div>
|
|
<div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>  <span class="keywordflow">if</span> (type == AFFINE) {</div>
|
|
<div class="line"><a name="l01470"></a><span class="lineno"> 1470</span>  RCHECK(SkipGlobalParam(type, ref, 4, allow_high_precision_mv, reader));</div>
|
|
<div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>  RCHECK(SkipGlobalParam(type, ref, 5, allow_high_precision_mv, reader));</div>
|
|
<div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>  }</div>
|
|
<div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>  }</div>
|
|
<div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>  <span class="keywordflow">if</span> (type >= TRANSLATION) {</div>
|
|
<div class="line"><a name="l01475"></a><span class="lineno"> 1475</span>  RCHECK(SkipGlobalParam(type, ref, 0, allow_high_precision_mv, reader));</div>
|
|
<div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>  RCHECK(SkipGlobalParam(type, ref, 1, allow_high_precision_mv, reader));</div>
|
|
<div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>  }</div>
|
|
<div class="line"><a name="l01478"></a><span class="lineno"> 1478</span>  }</div>
|
|
<div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01480"></a><span class="lineno"> 1480</span> }</div>
|
|
<div class="line"><a name="l01481"></a><span class="lineno"> 1481</span>  </div>
|
|
<div class="line"><a name="l01482"></a><span class="lineno"> 1482</span> <span class="comment">// 5.9.25. Global param syntax.</span></div>
|
|
<div class="line"><a name="l01483"></a><span class="lineno"> 1483</span> <span class="keywordtype">bool</span> AV1Parser::SkipGlobalParam(<span class="keywordtype">int</span> type,</div>
|
|
<div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>  <span class="keywordtype">int</span> ref,</div>
|
|
<div class="line"><a name="l01485"></a><span class="lineno"> 1485</span>  <span class="keywordtype">int</span> idx,</div>
|
|
<div class="line"><a name="l01486"></a><span class="lineno"> 1486</span>  <span class="keywordtype">bool</span> allow_high_precision_mv,</div>
|
|
<div class="line"><a name="l01487"></a><span class="lineno"> 1487</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l01488"></a><span class="lineno"> 1488</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kGmAbsTransBits = 12;</div>
|
|
<div class="line"><a name="l01489"></a><span class="lineno"> 1489</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kGmAbsTransOnlyBits = 9;</div>
|
|
<div class="line"><a name="l01490"></a><span class="lineno"> 1490</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kGmAbsAlphaBits = 12;</div>
|
|
<div class="line"><a name="l01491"></a><span class="lineno"> 1491</span>  </div>
|
|
<div class="line"><a name="l01492"></a><span class="lineno"> 1492</span>  <span class="keywordtype">int</span> abs_bits = kGmAbsAlphaBits;</div>
|
|
<div class="line"><a name="l01493"></a><span class="lineno"> 1493</span>  <span class="keywordflow">if</span> (idx < 2) {</div>
|
|
<div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>  <span class="keywordflow">if</span> (type == TRANSLATION) {</div>
|
|
<div class="line"><a name="l01495"></a><span class="lineno"> 1495</span>  abs_bits = kGmAbsTransOnlyBits - (allow_high_precision_mv ? 0 : 1);</div>
|
|
<div class="line"><a name="l01496"></a><span class="lineno"> 1496</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01497"></a><span class="lineno"> 1497</span>  abs_bits = kGmAbsTransBits;</div>
|
|
<div class="line"><a name="l01498"></a><span class="lineno"> 1498</span>  }</div>
|
|
<div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>  }</div>
|
|
<div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> mx = 1 << abs_bits;</div>
|
|
<div class="line"><a name="l01501"></a><span class="lineno"> 1501</span>  RCHECK(SkipDecodeSignedSubexpWithRef(-mx, mx + 1, reader));</div>
|
|
<div class="line"><a name="l01502"></a><span class="lineno"> 1502</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01503"></a><span class="lineno"> 1503</span> }</div>
|
|
<div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>  </div>
|
|
<div class="line"><a name="l01505"></a><span class="lineno"> 1505</span> <span class="comment">// 5.9.26. Decode signed subexp with ref syntax.</span></div>
|
|
<div class="line"><a name="l01506"></a><span class="lineno"> 1506</span> <span class="keywordtype">bool</span> AV1Parser::SkipDecodeSignedSubexpWithRef(<span class="keywordtype">int</span> low,</div>
|
|
<div class="line"><a name="l01507"></a><span class="lineno"> 1507</span>  <span class="keywordtype">int</span> high,</div>
|
|
<div class="line"><a name="l01508"></a><span class="lineno"> 1508</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l01509"></a><span class="lineno"> 1509</span>  RCHECK(SkipDecodeUnsignedSubexpWithRef(high - low, reader));</div>
|
|
<div class="line"><a name="l01510"></a><span class="lineno"> 1510</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01511"></a><span class="lineno"> 1511</span> }</div>
|
|
<div class="line"><a name="l01512"></a><span class="lineno"> 1512</span>  </div>
|
|
<div class="line"><a name="l01513"></a><span class="lineno"> 1513</span> <span class="comment">// 5.9.27. Decode unsigned subbexp with ref syntax.</span></div>
|
|
<div class="line"><a name="l01514"></a><span class="lineno"> 1514</span> <span class="keywordtype">bool</span> AV1Parser::SkipDecodeUnsignedSubexpWithRef(<span class="keywordtype">int</span> mx, BitReader* reader) {</div>
|
|
<div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>  RCHECK(SkipDecodeSubexp(mx, reader));</div>
|
|
<div class="line"><a name="l01516"></a><span class="lineno"> 1516</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01517"></a><span class="lineno"> 1517</span> }</div>
|
|
<div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>  </div>
|
|
<div class="line"><a name="l01519"></a><span class="lineno"> 1519</span> <span class="comment">// 5.9.28. Decode subexp syntax.</span></div>
|
|
<div class="line"><a name="l01520"></a><span class="lineno"> 1520</span> <span class="keywordtype">bool</span> AV1Parser::SkipDecodeSubexp(<span class="keywordtype">int</span> num_syms, BitReader* reader) {</div>
|
|
<div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>  <span class="keywordtype">int</span> i = 0;</div>
|
|
<div class="line"><a name="l01522"></a><span class="lineno"> 1522</span>  <span class="keywordtype">int</span> mk = 0;</div>
|
|
<div class="line"><a name="l01523"></a><span class="lineno"> 1523</span>  <span class="keywordtype">int</span> k = 3;</div>
|
|
<div class="line"><a name="l01524"></a><span class="lineno"> 1524</span>  <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
|
|
<div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> b2 = i ? (k + i - 1) : k;</div>
|
|
<div class="line"><a name="l01526"></a><span class="lineno"> 1526</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> a = 1 << b2;</div>
|
|
<div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>  <span class="keywordflow">if</span> (num_syms <= mk + 3 * a) {</div>
|
|
<div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>  <span class="keywordtype">int</span> subexp_final_bits = 0;</div>
|
|
<div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>  RCHECK(ReadNs(num_syms - mk, reader, &subexp_final_bits));</div>
|
|
<div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>  <span class="keywordtype">bool</span> subexp_more_bits = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>  RCHECK(reader->ReadBits(1, &subexp_more_bits));</div>
|
|
<div class="line"><a name="l01534"></a><span class="lineno"> 1534</span>  <span class="keywordflow">if</span> (subexp_more_bits) {</div>
|
|
<div class="line"><a name="l01535"></a><span class="lineno"> 1535</span>  i++;</div>
|
|
<div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>  mk += a;</div>
|
|
<div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>  <span class="comment">// Skip subexp_bits.</span></div>
|
|
<div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>  RCHECK(reader->SkipBits(b2));</div>
|
|
<div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01541"></a><span class="lineno"> 1541</span>  }</div>
|
|
<div class="line"><a name="l01542"></a><span class="lineno"> 1542</span>  }</div>
|
|
<div class="line"><a name="l01543"></a><span class="lineno"> 1543</span>  }</div>
|
|
<div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01545"></a><span class="lineno"> 1545</span> }</div>
|
|
<div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>  </div>
|
|
<div class="line"><a name="l01547"></a><span class="lineno"> 1547</span> <span class="comment">// 5.9.30. Film grain params syntax.</span></div>
|
|
<div class="line"><a name="l01548"></a><span class="lineno"> 1548</span> <span class="keywordtype">bool</span> AV1Parser::SkipFilmGrainParams(<span class="keywordtype">bool</span> show_frame,</div>
|
|
<div class="line"><a name="l01549"></a><span class="lineno"> 1549</span>  <span class="keywordtype">bool</span> showable_frame,</div>
|
|
<div class="line"><a name="l01550"></a><span class="lineno"> 1550</span>  BitReader* reader) {</div>
|
|
<div class="line"><a name="l01551"></a><span class="lineno"> 1551</span>  <span class="keywordflow">if</span> (!sequence_header_.film_grain_params_present ||</div>
|
|
<div class="line"><a name="l01552"></a><span class="lineno"> 1552</span>  (!show_frame && !showable_frame)) {</div>
|
|
<div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>  }</div>
|
|
<div class="line"><a name="l01555"></a><span class="lineno"> 1555</span>  </div>
|
|
<div class="line"><a name="l01556"></a><span class="lineno"> 1556</span>  <span class="keywordtype">bool</span> apply_grain = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01557"></a><span class="lineno"> 1557</span>  RCHECK(reader->ReadBits(1, &apply_grain));</div>
|
|
<div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>  <span class="keywordflow">if</span> (!apply_grain)</div>
|
|
<div class="line"><a name="l01559"></a><span class="lineno"> 1559</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01560"></a><span class="lineno"> 1560</span>  </div>
|
|
<div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>  <span class="comment">// Skip grain_seed.</span></div>
|
|
<div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>  RCHECK(reader->SkipBits(16));</div>
|
|
<div class="line"><a name="l01563"></a><span class="lineno"> 1563</span>  <span class="keywordtype">bool</span> update_grain = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01564"></a><span class="lineno"> 1564</span>  <span class="keywordflow">if</span> (frame_header_.frame_type == INTER_FRAME)</div>
|
|
<div class="line"><a name="l01565"></a><span class="lineno"> 1565</span>  RCHECK(reader->ReadBits(1, &update_grain));</div>
|
|
<div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>  <span class="keywordflow">if</span> (!update_grain) {</div>
|
|
<div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>  <span class="comment">// Skip film_grain_params_ref_idx.</span></div>
|
|
<div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>  RCHECK(reader->SkipBits(3));</div>
|
|
<div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>  }</div>
|
|
<div class="line"><a name="l01571"></a><span class="lineno"> 1571</span>  </div>
|
|
<div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>  <span class="keywordtype">int</span> num_y_points = 0;</div>
|
|
<div class="line"><a name="l01573"></a><span class="lineno"> 1573</span>  RCHECK(reader->ReadBits(4, &num_y_points));</div>
|
|
<div class="line"><a name="l01574"></a><span class="lineno"> 1574</span>  <span class="comment">// Skip point_y_value, point_y_scaling.</span></div>
|
|
<div class="line"><a name="l01575"></a><span class="lineno"> 1575</span>  RCHECK(reader->SkipBits((8 + 8) * num_y_points));</div>
|
|
<div class="line"><a name="l01576"></a><span class="lineno"> 1576</span>  </div>
|
|
<div class="line"><a name="l01577"></a><span class="lineno"> 1577</span>  <span class="keyword">const</span> ColorConfig& color_config = sequence_header_.color_config;</div>
|
|
<div class="line"><a name="l01578"></a><span class="lineno"> 1578</span>  <span class="keywordtype">bool</span> chroma_scaling_from_luma = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01579"></a><span class="lineno"> 1579</span>  <span class="keywordflow">if</span> (!color_config.mono_chrome)</div>
|
|
<div class="line"><a name="l01580"></a><span class="lineno"> 1580</span>  RCHECK(reader->ReadBits(1, &chroma_scaling_from_luma));</div>
|
|
<div class="line"><a name="l01581"></a><span class="lineno"> 1581</span>  <span class="keywordtype">int</span> num_cb_points = 0;</div>
|
|
<div class="line"><a name="l01582"></a><span class="lineno"> 1582</span>  <span class="keywordtype">int</span> num_cr_points = 0;</div>
|
|
<div class="line"><a name="l01583"></a><span class="lineno"> 1583</span>  <span class="keywordflow">if</span> (color_config.mono_chrome || chroma_scaling_from_luma ||</div>
|
|
<div class="line"><a name="l01584"></a><span class="lineno"> 1584</span>  (color_config.subsampling_x && color_config.subsampling_y &&</div>
|
|
<div class="line"><a name="l01585"></a><span class="lineno"> 1585</span>  num_y_points == 0)) {</div>
|
|
<div class="line"><a name="l01586"></a><span class="lineno"> 1586</span>  num_cb_points = 0;</div>
|
|
<div class="line"><a name="l01587"></a><span class="lineno"> 1587</span>  num_cr_points = 0;</div>
|
|
<div class="line"><a name="l01588"></a><span class="lineno"> 1588</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01589"></a><span class="lineno"> 1589</span>  RCHECK(reader->ReadBits(4, &num_cb_points));</div>
|
|
<div class="line"><a name="l01590"></a><span class="lineno"> 1590</span>  <span class="comment">// Skip point_cb_value, point_cb_scaling.</span></div>
|
|
<div class="line"><a name="l01591"></a><span class="lineno"> 1591</span>  RCHECK(reader->SkipBits((8 + 8) * num_cb_points));</div>
|
|
<div class="line"><a name="l01592"></a><span class="lineno"> 1592</span>  RCHECK(reader->ReadBits(4, &num_cr_points));</div>
|
|
<div class="line"><a name="l01593"></a><span class="lineno"> 1593</span>  <span class="comment">// Skip point_cr_value, point_cr_scaling.</span></div>
|
|
<div class="line"><a name="l01594"></a><span class="lineno"> 1594</span>  RCHECK(reader->SkipBits((8 + 8) * num_cr_points));</div>
|
|
<div class="line"><a name="l01595"></a><span class="lineno"> 1595</span>  }</div>
|
|
<div class="line"><a name="l01596"></a><span class="lineno"> 1596</span>  </div>
|
|
<div class="line"><a name="l01597"></a><span class="lineno"> 1597</span>  <span class="comment">// Skip grain_scaling_minus_8.</span></div>
|
|
<div class="line"><a name="l01598"></a><span class="lineno"> 1598</span>  RCHECK(reader->SkipBits(2));</div>
|
|
<div class="line"><a name="l01599"></a><span class="lineno"> 1599</span>  <span class="keywordtype">int</span> ar_coeff_lag = 0;</div>
|
|
<div class="line"><a name="l01600"></a><span class="lineno"> 1600</span>  RCHECK(reader->ReadBits(2, &ar_coeff_lag));</div>
|
|
<div class="line"><a name="l01601"></a><span class="lineno"> 1601</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_pos_luma = 2 * ar_coeff_lag * (ar_coeff_lag + 1);</div>
|
|
<div class="line"><a name="l01602"></a><span class="lineno"> 1602</span>  <span class="keywordtype">int</span> num_pos_chroma = num_pos_luma;</div>
|
|
<div class="line"><a name="l01603"></a><span class="lineno"> 1603</span>  <span class="keywordflow">if</span> (num_y_points) {</div>
|
|
<div class="line"><a name="l01604"></a><span class="lineno"> 1604</span>  num_pos_chroma = num_pos_luma + 1;</div>
|
|
<div class="line"><a name="l01605"></a><span class="lineno"> 1605</span>  <span class="comment">// Skip ar_coeffs_y_plus_128.</span></div>
|
|
<div class="line"><a name="l01606"></a><span class="lineno"> 1606</span>  RCHECK(reader->SkipBits(8 * num_pos_luma));</div>
|
|
<div class="line"><a name="l01607"></a><span class="lineno"> 1607</span>  }</div>
|
|
<div class="line"><a name="l01608"></a><span class="lineno"> 1608</span>  <span class="keywordflow">if</span> (chroma_scaling_from_luma || num_cb_points) {</div>
|
|
<div class="line"><a name="l01609"></a><span class="lineno"> 1609</span>  <span class="comment">// Skip ar_coeffs_cb_plus_128.</span></div>
|
|
<div class="line"><a name="l01610"></a><span class="lineno"> 1610</span>  RCHECK(reader->SkipBits(8 * num_pos_chroma));</div>
|
|
<div class="line"><a name="l01611"></a><span class="lineno"> 1611</span>  }</div>
|
|
<div class="line"><a name="l01612"></a><span class="lineno"> 1612</span>  <span class="keywordflow">if</span> (chroma_scaling_from_luma || num_cr_points) {</div>
|
|
<div class="line"><a name="l01613"></a><span class="lineno"> 1613</span>  <span class="comment">// Skip ar_coeffs_cb_plus_128.</span></div>
|
|
<div class="line"><a name="l01614"></a><span class="lineno"> 1614</span>  RCHECK(reader->SkipBits(8 * num_pos_chroma));</div>
|
|
<div class="line"><a name="l01615"></a><span class="lineno"> 1615</span>  }</div>
|
|
<div class="line"><a name="l01616"></a><span class="lineno"> 1616</span>  </div>
|
|
<div class="line"><a name="l01617"></a><span class="lineno"> 1617</span>  <span class="comment">// Skip ar_coeff_shift_minus_6, grain_scale_shift.</span></div>
|
|
<div class="line"><a name="l01618"></a><span class="lineno"> 1618</span>  RCHECK(reader->SkipBits(2 + 2));</div>
|
|
<div class="line"><a name="l01619"></a><span class="lineno"> 1619</span>  <span class="keywordflow">if</span> (num_cb_points) {</div>
|
|
<div class="line"><a name="l01620"></a><span class="lineno"> 1620</span>  <span class="comment">// Skip cb_mult, cb_luma_mult, cb_offset.</span></div>
|
|
<div class="line"><a name="l01621"></a><span class="lineno"> 1621</span>  RCHECK(reader->SkipBits(8 + 8 + 9));</div>
|
|
<div class="line"><a name="l01622"></a><span class="lineno"> 1622</span>  }</div>
|
|
<div class="line"><a name="l01623"></a><span class="lineno"> 1623</span>  <span class="keywordflow">if</span> (num_cr_points) {</div>
|
|
<div class="line"><a name="l01624"></a><span class="lineno"> 1624</span>  <span class="comment">// Skip cr_mult, cr_luma_mult, cr_offset.</span></div>
|
|
<div class="line"><a name="l01625"></a><span class="lineno"> 1625</span>  RCHECK(reader->SkipBits(8 + 8 + 9));</div>
|
|
<div class="line"><a name="l01626"></a><span class="lineno"> 1626</span>  }</div>
|
|
<div class="line"><a name="l01627"></a><span class="lineno"> 1627</span>  <span class="comment">// Skip overlap_flag, clip_restricted_range.</span></div>
|
|
<div class="line"><a name="l01628"></a><span class="lineno"> 1628</span>  RCHECK(reader->SkipBits(1 + 1));</div>
|
|
<div class="line"><a name="l01629"></a><span class="lineno"> 1629</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01630"></a><span class="lineno"> 1630</span> }</div>
|
|
<div class="line"><a name="l01631"></a><span class="lineno"> 1631</span>  </div>
|
|
<div class="line"><a name="l01632"></a><span class="lineno"> 1632</span> <span class="comment">// 5.9.31. Temporal point info syntax.</span></div>
|
|
<div class="line"><a name="l01633"></a><span class="lineno"> 1633</span> <span class="keywordtype">bool</span> AV1Parser::SkipTemporalPointInfo(BitReader* reader) {</div>
|
|
<div class="line"><a name="l01634"></a><span class="lineno"> 1634</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> frame_presentation_time_length =</div>
|
|
<div class="line"><a name="l01635"></a><span class="lineno"> 1635</span>  sequence_header_.decoder_model_info</div>
|
|
<div class="line"><a name="l01636"></a><span class="lineno"> 1636</span>  .frame_presentation_time_length_minus_1 +</div>
|
|
<div class="line"><a name="l01637"></a><span class="lineno"> 1637</span>  1;</div>
|
|
<div class="line"><a name="l01638"></a><span class="lineno"> 1638</span>  <span class="comment">// Skip frame_presentation_time.</span></div>
|
|
<div class="line"><a name="l01639"></a><span class="lineno"> 1639</span>  RCHECK(reader->SkipBits(frame_presentation_time_length));</div>
|
|
<div class="line"><a name="l01640"></a><span class="lineno"> 1640</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01641"></a><span class="lineno"> 1641</span> }</div>
|
|
<div class="line"><a name="l01642"></a><span class="lineno"> 1642</span>  </div>
|
|
<div class="line"><a name="l01643"></a><span class="lineno"> 1643</span> <span class="comment">// 5.10. Frame OBU syntax.</span></div>
|
|
<div class="line"><a name="l01644"></a><span class="lineno"> 1644</span> <span class="keywordtype">bool</span> AV1Parser::ParseFrameObu(<span class="keyword">const</span> ObuHeader& obu_header,</div>
|
|
<div class="line"><a name="l01645"></a><span class="lineno"> 1645</span>  <span class="keywordtype">size_t</span> size,</div>
|
|
<div class="line"><a name="l01646"></a><span class="lineno"> 1646</span>  BitReader* reader,</div>
|
|
<div class="line"><a name="l01647"></a><span class="lineno"> 1647</span>  std::vector<Tile>* tiles) {</div>
|
|
<div class="line"><a name="l01648"></a><span class="lineno"> 1648</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> start_bit_pos = reader->bit_position();</div>
|
|
<div class="line"><a name="l01649"></a><span class="lineno"> 1649</span>  RCHECK(ParseFrameHeaderObu(obu_header, reader));</div>
|
|
<div class="line"><a name="l01650"></a><span class="lineno"> 1650</span>  RCHECK(ByteAlignment(reader));</div>
|
|
<div class="line"><a name="l01651"></a><span class="lineno"> 1651</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> end_bit_pos = reader->bit_position();</div>
|
|
<div class="line"><a name="l01652"></a><span class="lineno"> 1652</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> header_bytes = (end_bit_pos - start_bit_pos) / 8;</div>
|
|
<div class="line"><a name="l01653"></a><span class="lineno"> 1653</span>  RCHECK(ParseTileGroupObu(size - header_bytes, reader, tiles));</div>
|
|
<div class="line"><a name="l01654"></a><span class="lineno"> 1654</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01655"></a><span class="lineno"> 1655</span> }</div>
|
|
<div class="line"><a name="l01656"></a><span class="lineno"> 1656</span>  </div>
|
|
<div class="line"><a name="l01657"></a><span class="lineno"> 1657</span> <span class="comment">// 5.11.1. General tile group OBU syntax.</span></div>
|
|
<div class="line"><a name="l01658"></a><span class="lineno"> 1658</span> <span class="keywordtype">bool</span> AV1Parser::ParseTileGroupObu(<span class="keywordtype">size_t</span> size,</div>
|
|
<div class="line"><a name="l01659"></a><span class="lineno"> 1659</span>  BitReader* reader,</div>
|
|
<div class="line"><a name="l01660"></a><span class="lineno"> 1660</span>  std::vector<Tile>* tiles) {</div>
|
|
<div class="line"><a name="l01661"></a><span class="lineno"> 1661</span>  <span class="keyword">const</span> TileInfo& tile_info = frame_header_.tile_info;</div>
|
|
<div class="line"><a name="l01662"></a><span class="lineno"> 1662</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> start_bit_pos = reader->bit_position();</div>
|
|
<div class="line"><a name="l01663"></a><span class="lineno"> 1663</span>  </div>
|
|
<div class="line"><a name="l01664"></a><span class="lineno"> 1664</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_tiles = tile_info.tile_cols * tile_info.tile_rows;</div>
|
|
<div class="line"><a name="l01665"></a><span class="lineno"> 1665</span>  <span class="keywordtype">bool</span> tile_start_and_end_present_flag = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01666"></a><span class="lineno"> 1666</span>  <span class="keywordflow">if</span> (num_tiles > 1)</div>
|
|
<div class="line"><a name="l01667"></a><span class="lineno"> 1667</span>  RCHECK(reader->ReadBits(1, &tile_start_and_end_present_flag));</div>
|
|
<div class="line"><a name="l01668"></a><span class="lineno"> 1668</span>  </div>
|
|
<div class="line"><a name="l01669"></a><span class="lineno"> 1669</span>  <span class="keywordtype">int</span> tg_start = 0;</div>
|
|
<div class="line"><a name="l01670"></a><span class="lineno"> 1670</span>  <span class="keywordtype">int</span> tg_end = num_tiles - 1;</div>
|
|
<div class="line"><a name="l01671"></a><span class="lineno"> 1671</span>  <span class="keywordflow">if</span> (num_tiles > 1 && tile_start_and_end_present_flag) {</div>
|
|
<div class="line"><a name="l01672"></a><span class="lineno"> 1672</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> tile_bits = tile_info.tile_cols_log2 + tile_info.tile_rows_log2;</div>
|
|
<div class="line"><a name="l01673"></a><span class="lineno"> 1673</span>  RCHECK(reader->ReadBits(tile_bits, &tg_start));</div>
|
|
<div class="line"><a name="l01674"></a><span class="lineno"> 1674</span>  RCHECK(reader->ReadBits(tile_bits, &tg_end));</div>
|
|
<div class="line"><a name="l01675"></a><span class="lineno"> 1675</span>  }</div>
|
|
<div class="line"><a name="l01676"></a><span class="lineno"> 1676</span>  RCHECK(ByteAlignment(reader));</div>
|
|
<div class="line"><a name="l01677"></a><span class="lineno"> 1677</span>  </div>
|
|
<div class="line"><a name="l01678"></a><span class="lineno"> 1678</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> end_bit_pos = reader->bit_position();</div>
|
|
<div class="line"><a name="l01679"></a><span class="lineno"> 1679</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> header_bytes = (end_bit_pos - start_bit_pos) / 8;</div>
|
|
<div class="line"><a name="l01680"></a><span class="lineno"> 1680</span>  size -= header_bytes;</div>
|
|
<div class="line"><a name="l01681"></a><span class="lineno"> 1681</span>  </div>
|
|
<div class="line"><a name="l01682"></a><span class="lineno"> 1682</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> tile_num = tg_start; tile_num <= tg_end; tile_num++) {</div>
|
|
<div class="line"><a name="l01683"></a><span class="lineno"> 1683</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> last_tile = tile_num == tg_end;</div>
|
|
<div class="line"><a name="l01684"></a><span class="lineno"> 1684</span>  <span class="keywordtype">size_t</span> tile_size = size;</div>
|
|
<div class="line"><a name="l01685"></a><span class="lineno"> 1685</span>  <span class="keywordflow">if</span> (!last_tile) {</div>
|
|
<div class="line"><a name="l01686"></a><span class="lineno"> 1686</span>  <span class="keywordtype">size_t</span> tile_size_minus_1 = 0;</div>
|
|
<div class="line"><a name="l01687"></a><span class="lineno"> 1687</span>  RCHECK(ReadLe(tile_info.tile_size_bytes, reader, &tile_size_minus_1));</div>
|
|
<div class="line"><a name="l01688"></a><span class="lineno"> 1688</span>  tile_size = tile_size_minus_1 + 1;</div>
|
|
<div class="line"><a name="l01689"></a><span class="lineno"> 1689</span>  size -= tile_size + tile_info.tile_size_bytes;</div>
|
|
<div class="line"><a name="l01690"></a><span class="lineno"> 1690</span>  }</div>
|
|
<div class="line"><a name="l01691"></a><span class="lineno"> 1691</span>  tiles->push_back({reader->bit_position() / 8, tile_size});</div>
|
|
<div class="line"><a name="l01692"></a><span class="lineno"> 1692</span>  RCHECK(reader->SkipBits(tile_size * 8)); <span class="comment">// Skip the tile.</span></div>
|
|
<div class="line"><a name="l01693"></a><span class="lineno"> 1693</span>  }</div>
|
|
<div class="line"><a name="l01694"></a><span class="lineno"> 1694</span>  </div>
|
|
<div class="line"><a name="l01695"></a><span class="lineno"> 1695</span>  <span class="keywordflow">if</span> (tg_end == num_tiles - 1) {</div>
|
|
<div class="line"><a name="l01696"></a><span class="lineno"> 1696</span>  DecodeFrameWrapup();</div>
|
|
<div class="line"><a name="l01697"></a><span class="lineno"> 1697</span>  frame_header_.seen_frame_header = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01698"></a><span class="lineno"> 1698</span>  }</div>
|
|
<div class="line"><a name="l01699"></a><span class="lineno"> 1699</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01700"></a><span class="lineno"> 1700</span> }</div>
|
|
<div class="line"><a name="l01701"></a><span class="lineno"> 1701</span>  </div>
|
|
<div class="line"><a name="l01702"></a><span class="lineno"> 1702</span> <span class="comment">// 5.11.14. Segmentation feature active function.</span></div>
|
|
<div class="line"><a name="l01703"></a><span class="lineno"> 1703</span> <span class="keywordtype">bool</span> AV1Parser::SegFeatureActiveIdx(<span class="keywordtype">int</span> idx, <span class="keywordtype">int</span> feature) {</div>
|
|
<div class="line"><a name="l01704"></a><span class="lineno"> 1704</span>  <span class="keyword">const</span> SegmentationParams& segmentation_params =</div>
|
|
<div class="line"><a name="l01705"></a><span class="lineno"> 1705</span>  frame_header_.segmentation_params;</div>
|
|
<div class="line"><a name="l01706"></a><span class="lineno"> 1706</span>  <span class="keywordflow">return</span> segmentation_params.segmentation_enabled &&</div>
|
|
<div class="line"><a name="l01707"></a><span class="lineno"> 1707</span>  segmentation_params.feature_enabled[idx][feature];</div>
|
|
<div class="line"><a name="l01708"></a><span class="lineno"> 1708</span> }</div>
|
|
<div class="line"><a name="l01709"></a><span class="lineno"> 1709</span>  </div>
|
|
<div class="line"><a name="l01710"></a><span class="lineno"> 1710</span> <span class="comment">// 7.4. Decode frame wrapup process.</span></div>
|
|
<div class="line"><a name="l01711"></a><span class="lineno"> 1711</span> <span class="keywordtype">void</span> AV1Parser::DecodeFrameWrapup() {</div>
|
|
<div class="line"><a name="l01712"></a><span class="lineno"> 1712</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> refresh_frame_flags = frame_header_.refresh_frame_flags;</div>
|
|
<div class="line"><a name="l01713"></a><span class="lineno"> 1713</span>  <span class="keywordflow">if</span> (frame_header_.show_existing_frame &&</div>
|
|
<div class="line"><a name="l01714"></a><span class="lineno"> 1714</span>  frame_header_.frame_type == KEY_FRAME) {</div>
|
|
<div class="line"><a name="l01715"></a><span class="lineno"> 1715</span>  <span class="comment">// 7.21. Reference frame loading process.</span></div>
|
|
<div class="line"><a name="l01716"></a><span class="lineno"> 1716</span>  <span class="keyword">const</span> ReferenceFrame& reference_frame =</div>
|
|
<div class="line"><a name="l01717"></a><span class="lineno"> 1717</span>  reference_frames_[frame_header_.frame_to_show_map_idx];</div>
|
|
<div class="line"><a name="l01718"></a><span class="lineno"> 1718</span>  </div>
|
|
<div class="line"><a name="l01719"></a><span class="lineno"> 1719</span>  frame_header_.upscaled_width = reference_frame.upscaled_width;</div>
|
|
<div class="line"><a name="l01720"></a><span class="lineno"> 1720</span>  frame_header_.frame_width = reference_frame.frame_width;</div>
|
|
<div class="line"><a name="l01721"></a><span class="lineno"> 1721</span>  frame_header_.frame_height = reference_frame.frame_height;</div>
|
|
<div class="line"><a name="l01722"></a><span class="lineno"> 1722</span>  frame_header_.render_width = reference_frame.render_width;</div>
|
|
<div class="line"><a name="l01723"></a><span class="lineno"> 1723</span>  frame_header_.render_height = reference_frame.render_height;</div>
|
|
<div class="line"><a name="l01724"></a><span class="lineno"> 1724</span>  frame_header_.mi_cols = reference_frame.mi_cols;</div>
|
|
<div class="line"><a name="l01725"></a><span class="lineno"> 1725</span>  frame_header_.mi_rows = reference_frame.mi_rows;</div>
|
|
<div class="line"><a name="l01726"></a><span class="lineno"> 1726</span>  </div>
|
|
<div class="line"><a name="l01727"></a><span class="lineno"> 1727</span>  ColorConfig& color_config = sequence_header_.color_config;</div>
|
|
<div class="line"><a name="l01728"></a><span class="lineno"> 1728</span>  color_config.subsampling_x = reference_frame.subsampling_x;</div>
|
|
<div class="line"><a name="l01729"></a><span class="lineno"> 1729</span>  color_config.subsampling_y = reference_frame.subsampling_y;</div>
|
|
<div class="line"><a name="l01730"></a><span class="lineno"> 1730</span>  color_config.bit_depth = reference_frame.bit_depth;</div>
|
|
<div class="line"><a name="l01731"></a><span class="lineno"> 1731</span>  </div>
|
|
<div class="line"><a name="l01732"></a><span class="lineno"> 1732</span>  frame_header_.order_hint = reference_frame.order_hint;</div>
|
|
<div class="line"><a name="l01733"></a><span class="lineno"> 1733</span>  }</div>
|
|
<div class="line"><a name="l01734"></a><span class="lineno"> 1734</span>  <span class="comment">// 7.20. Reference frame update process.</span></div>
|
|
<div class="line"><a name="l01735"></a><span class="lineno"> 1735</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i <= kNumRefFrames - 1; i++) {</div>
|
|
<div class="line"><a name="l01736"></a><span class="lineno"> 1736</span>  <span class="keywordflow">if</span> ((refresh_frame_flags >> i) & 1) {</div>
|
|
<div class="line"><a name="l01737"></a><span class="lineno"> 1737</span>  ReferenceFrame& reference_frame = reference_frames_[i];</div>
|
|
<div class="line"><a name="l01738"></a><span class="lineno"> 1738</span>  </div>
|
|
<div class="line"><a name="l01739"></a><span class="lineno"> 1739</span>  reference_frame.upscaled_width = frame_header_.upscaled_width;</div>
|
|
<div class="line"><a name="l01740"></a><span class="lineno"> 1740</span>  reference_frame.frame_width = frame_header_.frame_width;</div>
|
|
<div class="line"><a name="l01741"></a><span class="lineno"> 1741</span>  reference_frame.frame_height = frame_header_.frame_height;</div>
|
|
<div class="line"><a name="l01742"></a><span class="lineno"> 1742</span>  reference_frame.render_width = frame_header_.render_width;</div>
|
|
<div class="line"><a name="l01743"></a><span class="lineno"> 1743</span>  reference_frame.render_height = frame_header_.render_height;</div>
|
|
<div class="line"><a name="l01744"></a><span class="lineno"> 1744</span>  reference_frame.mi_cols = frame_header_.mi_cols;</div>
|
|
<div class="line"><a name="l01745"></a><span class="lineno"> 1745</span>  reference_frame.mi_rows = frame_header_.mi_rows;</div>
|
|
<div class="line"><a name="l01746"></a><span class="lineno"> 1746</span>  reference_frame.frame_type = frame_header_.frame_type;</div>
|
|
<div class="line"><a name="l01747"></a><span class="lineno"> 1747</span>  </div>
|
|
<div class="line"><a name="l01748"></a><span class="lineno"> 1748</span>  <span class="keyword">const</span> ColorConfig& color_config = sequence_header_.color_config;</div>
|
|
<div class="line"><a name="l01749"></a><span class="lineno"> 1749</span>  reference_frame.subsampling_x = color_config.subsampling_x;</div>
|
|
<div class="line"><a name="l01750"></a><span class="lineno"> 1750</span>  reference_frame.subsampling_y = color_config.subsampling_y;</div>
|
|
<div class="line"><a name="l01751"></a><span class="lineno"> 1751</span>  reference_frame.bit_depth = color_config.bit_depth;</div>
|
|
<div class="line"><a name="l01752"></a><span class="lineno"> 1752</span>  </div>
|
|
<div class="line"><a name="l01753"></a><span class="lineno"> 1753</span>  reference_frame.order_hint = frame_header_.order_hint;</div>
|
|
<div class="line"><a name="l01754"></a><span class="lineno"> 1754</span>  }</div>
|
|
<div class="line"><a name="l01755"></a><span class="lineno"> 1755</span>  }</div>
|
|
<div class="line"><a name="l01756"></a><span class="lineno"> 1756</span> }</div>
|
|
<div class="line"><a name="l01757"></a><span class="lineno"> 1757</span>  </div>
|
|
<div class="line"><a name="l01758"></a><span class="lineno"> 1758</span> <span class="comment">// 7.8. Set frame refs process.</span></div>
|
|
<div class="line"><a name="l01759"></a><span class="lineno"> 1759</span> <span class="keywordtype">bool</span> AV1Parser::SetFrameRefs(<span class="keywordtype">int</span> last_frame_idx, <span class="keywordtype">int</span> gold_frame_idx) {</div>
|
|
<div class="line"><a name="l01760"></a><span class="lineno"> 1760</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kRefsPerFrame; i++)</div>
|
|
<div class="line"><a name="l01761"></a><span class="lineno"> 1761</span>  frame_header_.ref_frame_idx[i] = -1;</div>
|
|
<div class="line"><a name="l01762"></a><span class="lineno"> 1762</span>  frame_header_.ref_frame_idx[LAST_FRAME - LAST_FRAME] = last_frame_idx;</div>
|
|
<div class="line"><a name="l01763"></a><span class="lineno"> 1763</span>  frame_header_.ref_frame_idx[GOLDEN_FRAME - LAST_FRAME] = gold_frame_idx;</div>
|
|
<div class="line"><a name="l01764"></a><span class="lineno"> 1764</span>  </div>
|
|
<div class="line"><a name="l01765"></a><span class="lineno"> 1765</span>  <span class="keywordtype">bool</span> used_frame[kNumRefFrames] = {};</div>
|
|
<div class="line"><a name="l01766"></a><span class="lineno"> 1766</span>  used_frame[last_frame_idx] = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01767"></a><span class="lineno"> 1767</span>  used_frame[gold_frame_idx] = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01768"></a><span class="lineno"> 1768</span>  </div>
|
|
<div class="line"><a name="l01769"></a><span class="lineno"> 1769</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> cur_frame_hint = 1 << (sequence_header_.order_hint_bits - 1);</div>
|
|
<div class="line"><a name="l01770"></a><span class="lineno"> 1770</span>  </div>
|
|
<div class="line"><a name="l01771"></a><span class="lineno"> 1771</span>  <span class="comment">// An array containing the expected output order shifted such that the</span></div>
|
|
<div class="line"><a name="l01772"></a><span class="lineno"> 1772</span>  <span class="comment">// current frame has hint equal to |cur_frame_hint| is prepared.</span></div>
|
|
<div class="line"><a name="l01773"></a><span class="lineno"> 1773</span>  <span class="keywordtype">int</span> shifted_order_hints[kNumRefFrames];</div>
|
|
<div class="line"><a name="l01774"></a><span class="lineno"> 1774</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kNumRefFrames; i++) {</div>
|
|
<div class="line"><a name="l01775"></a><span class="lineno"> 1775</span>  shifted_order_hints[i] =</div>
|
|
<div class="line"><a name="l01776"></a><span class="lineno"> 1776</span>  cur_frame_hint + GetRelativeDist(reference_frames_[i].order_hint,</div>
|
|
<div class="line"><a name="l01777"></a><span class="lineno"> 1777</span>  frame_header_.order_hint);</div>
|
|
<div class="line"><a name="l01778"></a><span class="lineno"> 1778</span>  }</div>
|
|
<div class="line"><a name="l01779"></a><span class="lineno"> 1779</span>  </div>
|
|
<div class="line"><a name="l01780"></a><span class="lineno"> 1780</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> last_order_hint = shifted_order_hints[last_frame_idx];</div>
|
|
<div class="line"><a name="l01781"></a><span class="lineno"> 1781</span>  RCHECK(last_order_hint < cur_frame_hint);</div>
|
|
<div class="line"><a name="l01782"></a><span class="lineno"> 1782</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> gold_order_hint = shifted_order_hints[gold_frame_idx];</div>
|
|
<div class="line"><a name="l01783"></a><span class="lineno"> 1783</span>  RCHECK(gold_order_hint < cur_frame_hint);</div>
|
|
<div class="line"><a name="l01784"></a><span class="lineno"> 1784</span>  </div>
|
|
<div class="line"><a name="l01785"></a><span class="lineno"> 1785</span>  <span class="comment">// The ALTREF_FRAME reference is set to be a backward reference to the frame</span></div>
|
|
<div class="line"><a name="l01786"></a><span class="lineno"> 1786</span>  <span class="comment">// with highest output order.</span></div>
|
|
<div class="line"><a name="l01787"></a><span class="lineno"> 1787</span>  <span class="keywordtype">int</span> ref = FindLatestBackward(shifted_order_hints, used_frame, cur_frame_hint);</div>
|
|
<div class="line"><a name="l01788"></a><span class="lineno"> 1788</span>  <span class="keywordflow">if</span> (ref >= 0) {</div>
|
|
<div class="line"><a name="l01789"></a><span class="lineno"> 1789</span>  frame_header_.ref_frame_idx[ALTREF_FRAME - LAST_FRAME] = ref;</div>
|
|
<div class="line"><a name="l01790"></a><span class="lineno"> 1790</span>  used_frame[ref] = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01791"></a><span class="lineno"> 1791</span>  }</div>
|
|
<div class="line"><a name="l01792"></a><span class="lineno"> 1792</span>  </div>
|
|
<div class="line"><a name="l01793"></a><span class="lineno"> 1793</span>  <span class="comment">// The BWDREF_FRAME reference is set to be a backward reference to the cloest</span></div>
|
|
<div class="line"><a name="l01794"></a><span class="lineno"> 1794</span>  <span class="comment">// frame.</span></div>
|
|
<div class="line"><a name="l01795"></a><span class="lineno"> 1795</span>  ref = FindEarliestBackward(shifted_order_hints, used_frame, cur_frame_hint);</div>
|
|
<div class="line"><a name="l01796"></a><span class="lineno"> 1796</span>  <span class="keywordflow">if</span> (ref >= 0) {</div>
|
|
<div class="line"><a name="l01797"></a><span class="lineno"> 1797</span>  frame_header_.ref_frame_idx[BWDREF_FRAME - LAST_FRAME] = ref;</div>
|
|
<div class="line"><a name="l01798"></a><span class="lineno"> 1798</span>  used_frame[ref] = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01799"></a><span class="lineno"> 1799</span>  }</div>
|
|
<div class="line"><a name="l01800"></a><span class="lineno"> 1800</span>  </div>
|
|
<div class="line"><a name="l01801"></a><span class="lineno"> 1801</span>  <span class="comment">// The ALTREF2_FRAME reference is set to the next closest backward reference.</span></div>
|
|
<div class="line"><a name="l01802"></a><span class="lineno"> 1802</span>  ref = FindEarliestBackward(shifted_order_hints, used_frame, cur_frame_hint);</div>
|
|
<div class="line"><a name="l01803"></a><span class="lineno"> 1803</span>  <span class="keywordflow">if</span> (ref >= 0) {</div>
|
|
<div class="line"><a name="l01804"></a><span class="lineno"> 1804</span>  frame_header_.ref_frame_idx[ALTREF2_FRAME - LAST_FRAME] = ref;</div>
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<div class="line"><a name="l01805"></a><span class="lineno"> 1805</span>  used_frame[ref] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l01806"></a><span class="lineno"> 1806</span>  }</div>
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<div class="line"><a name="l01807"></a><span class="lineno"> 1807</span>  </div>
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<div class="line"><a name="l01808"></a><span class="lineno"> 1808</span>  <span class="comment">// The remaining references are set to be forward references in</span></div>
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<div class="line"><a name="l01809"></a><span class="lineno"> 1809</span>  <span class="comment">// anti-chronological order.</span></div>
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<div class="line"><a name="l01810"></a><span class="lineno"> 1810</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kRefFrameList[] = {</div>
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<div class="line"><a name="l01811"></a><span class="lineno"> 1811</span>  LAST2_FRAME, LAST3_FRAME, BWDREF_FRAME, ALTREF2_FRAME, ALTREF_FRAME,</div>
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<div class="line"><a name="l01812"></a><span class="lineno"> 1812</span>  };</div>
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<div class="line"><a name="l01813"></a><span class="lineno"> 1813</span>  static_assert(arraysize(kRefFrameList) == kRefsPerFrame - 2,</div>
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<div class="line"><a name="l01814"></a><span class="lineno"> 1814</span>  <span class="stringliteral">"Unexpected kRefFrameList size."</span>);</div>
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<div class="line"><a name="l01815"></a><span class="lineno"> 1815</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> ref_frame : kRefFrameList) {</div>
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<div class="line"><a name="l01816"></a><span class="lineno"> 1816</span>  <span class="keywordflow">if</span> (frame_header_.ref_frame_idx[ref_frame - LAST_FRAME] < 0) {</div>
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<div class="line"><a name="l01817"></a><span class="lineno"> 1817</span>  ref = FindLatestForward(shifted_order_hints, used_frame, cur_frame_hint);</div>
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<div class="line"><a name="l01818"></a><span class="lineno"> 1818</span>  <span class="keywordflow">if</span> (ref >= 0) {</div>
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<div class="line"><a name="l01819"></a><span class="lineno"> 1819</span>  frame_header_.ref_frame_idx[ref_frame - LAST_FRAME] = ref;</div>
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<div class="line"><a name="l01820"></a><span class="lineno"> 1820</span>  used_frame[ref] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l01821"></a><span class="lineno"> 1821</span>  }</div>
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<div class="line"><a name="l01822"></a><span class="lineno"> 1822</span>  }</div>
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<div class="line"><a name="l01823"></a><span class="lineno"> 1823</span>  }</div>
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<div class="line"><a name="l01824"></a><span class="lineno"> 1824</span>  </div>
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<div class="line"><a name="l01825"></a><span class="lineno"> 1825</span>  <span class="comment">// Finally, any remaining references are set to the reference frame with</span></div>
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|
<div class="line"><a name="l01826"></a><span class="lineno"> 1826</span>  <span class="comment">// smallest output order.</span></div>
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|
<div class="line"><a name="l01827"></a><span class="lineno"> 1827</span>  ref = -1;</div>
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|
<div class="line"><a name="l01828"></a><span class="lineno"> 1828</span>  <span class="keywordtype">int</span> earliest_order_hint = 0;</div>
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|
<div class="line"><a name="l01829"></a><span class="lineno"> 1829</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kNumRefFrames; i++) {</div>
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|
<div class="line"><a name="l01830"></a><span class="lineno"> 1830</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> hint = shifted_order_hints[i];</div>
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<div class="line"><a name="l01831"></a><span class="lineno"> 1831</span>  <span class="keywordflow">if</span> (ref < 0 || hint < earliest_order_hint) {</div>
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<div class="line"><a name="l01832"></a><span class="lineno"> 1832</span>  ref = i;</div>
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|
<div class="line"><a name="l01833"></a><span class="lineno"> 1833</span>  earliest_order_hint = hint;</div>
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|
<div class="line"><a name="l01834"></a><span class="lineno"> 1834</span>  }</div>
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<div class="line"><a name="l01835"></a><span class="lineno"> 1835</span>  }</div>
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|
<div class="line"><a name="l01836"></a><span class="lineno"> 1836</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < kRefsPerFrame; i++) {</div>
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<div class="line"><a name="l01837"></a><span class="lineno"> 1837</span>  <span class="keywordflow">if</span> (frame_header_.ref_frame_idx[i] < 0) {</div>
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<div class="line"><a name="l01838"></a><span class="lineno"> 1838</span>  frame_header_.ref_frame_idx[i] = ref;</div>
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<div class="line"><a name="l01839"></a><span class="lineno"> 1839</span>  }</div>
|
|
<div class="line"><a name="l01840"></a><span class="lineno"> 1840</span>  }</div>
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<div class="line"><a name="l01841"></a><span class="lineno"> 1841</span>  </div>
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|
<div class="line"><a name="l01842"></a><span class="lineno"> 1842</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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|
<div class="line"><a name="l01843"></a><span class="lineno"> 1843</span> }</div>
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|
<div class="line"><a name="l01844"></a><span class="lineno"> 1844</span>  </div>
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<div class="line"><a name="l01845"></a><span class="lineno"> 1845</span> <span class="comment">// 7.12.2. Dequantization functions. The function returns the quantizer index</span></div>
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<div class="line"><a name="l01846"></a><span class="lineno"> 1846</span> <span class="comment">// for the current block.</span></div>
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<div class="line"><a name="l01847"></a><span class="lineno"> 1847</span> <span class="keywordtype">int</span> AV1Parser::GetQIndex(<span class="keywordtype">bool</span> ignore_delta_q, <span class="keywordtype">int</span> segment_id) {</div>
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|
<div class="line"><a name="l01848"></a><span class="lineno"> 1848</span>  <span class="comment">// We do not have use case for ignore_delta_q false case.</span></div>
|
|
<div class="line"><a name="l01849"></a><span class="lineno"> 1849</span>  CHECK(ignore_delta_q) << <span class="stringliteral">"ignoreDeltaQ equal to 0 is not supported."</span>;</div>
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|
<div class="line"><a name="l01850"></a><span class="lineno"> 1850</span>  </div>
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|
<div class="line"><a name="l01851"></a><span class="lineno"> 1851</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> base_q_idx = frame_header_.quantization_params.base_q_idx;</div>
|
|
<div class="line"><a name="l01852"></a><span class="lineno"> 1852</span>  </div>
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|
<div class="line"><a name="l01853"></a><span class="lineno"> 1853</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kSegLvlAltQ = 0;</div>
|
|
<div class="line"><a name="l01854"></a><span class="lineno"> 1854</span>  <span class="keywordflow">if</span> (SegFeatureActiveIdx(segment_id, kSegLvlAltQ)) {</div>
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|
<div class="line"><a name="l01855"></a><span class="lineno"> 1855</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> data =</div>
|
|
<div class="line"><a name="l01856"></a><span class="lineno"> 1856</span>  frame_header_.segmentation_params.feature_data[segment_id][kSegLvlAltQ];</div>
|
|
<div class="line"><a name="l01857"></a><span class="lineno"> 1857</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> qindex = base_q_idx + data;</div>
|
|
<div class="line"><a name="l01858"></a><span class="lineno"> 1858</span>  <span class="keywordflow">return</span> Clip3(0, 255, qindex);</div>
|
|
<div class="line"><a name="l01859"></a><span class="lineno"> 1859</span>  } <span class="keywordflow">else</span> {</div>
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|
<div class="line"><a name="l01860"></a><span class="lineno"> 1860</span>  <span class="keywordflow">return</span> base_q_idx;</div>
|
|
<div class="line"><a name="l01861"></a><span class="lineno"> 1861</span>  }</div>
|
|
<div class="line"><a name="l01862"></a><span class="lineno"> 1862</span> }</div>
|
|
<div class="line"><a name="l01863"></a><span class="lineno"> 1863</span>  </div>
|
|
<div class="line"><a name="l01864"></a><span class="lineno"> 1864</span> } <span class="comment">// namespace media</span></div>
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|
<div class="line"><a name="l01865"></a><span class="lineno"> 1865</span> } <span class="comment">// namespace shaka</span></div>
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</div><!-- fragment --></div><!-- contents -->
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<div class="ttc" id="aclassshaka_1_1media_1_1BitReader_html_a100abf1165633b67359bb3d813594f7e"><div class="ttname"><a href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#a100abf1165633b67359bb3d813594f7e">shaka::media::BitReader::bit_position</a></div><div class="ttdeci">size_t bit_position() const</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/dd3/bit__reader_8h_source.html#l00094">bit_reader.h:94</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1BitReader_html_a94b03de069b0054ee4a534b12644a986"><div class="ttname"><a href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#a94b03de069b0054ee4a534b12644a986">shaka::media::BitReader::bits_available</a></div><div class="ttdeci">size_t bits_available() const</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/dd3/bit__reader_8h_source.html#l00089">bit_reader.h:89</a></div></div>
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<div class="ttc" id="anamespaceshaka_html"><div class="ttname"><a href="../../d8/daf/namespaceshaka.html">shaka</a></div><div class="ttdoc">All the methods that are virtual are virtual for mocking.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d15/gflags__hex__bytes_8cc_source.html#l00011">gflags_hex_bytes.cc:11</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1BitReader_html"><div class="ttname"><a href="../../d6/da9/classshaka_1_1media_1_1BitReader.html">shaka::media::BitReader</a></div><div class="ttdoc">A class to read bit streams.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/dd3/bit__reader_8h_source.html#l00017">bit_reader.h:17</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1AV1Parser_html_ae0f20c4724f1c65b27f9f155c6362e6d"><div class="ttname"><a href="../../db/dc7/classshaka_1_1media_1_1AV1Parser.html#ae0f20c4724f1c65b27f9f155c6362e6d">shaka::media::AV1Parser::Parse</a></div><div class="ttdeci">virtual bool Parse(const uint8_t *data, size_t data_size, std::vector< Tile > *tiles)</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/dbc/av1__parser_8cc_source.html#l00255">av1_parser.cc:255</a></div></div>
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<div class="ttc" id="aclassshaka_1_1media_1_1BitReader_html_a4ab20ef220c76072eaecb982aba0541d"><div class="ttname"><a href="../../d6/da9/classshaka_1_1media_1_1BitReader.html#a4ab20ef220c76072eaecb982aba0541d">shaka::media::BitReader::SkipBits</a></div><div class="ttdeci">bool SkipBits(size_t num_bits)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/de0/bit__reader_8cc_source.html#l00024">bit_reader.cc:24</a></div></div>
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