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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2014 The Chromium Authors. All rights reserved.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// Use of this source code is governed by a BSD-style license that can be</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// found in the LICENSE file.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;</div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="preprocessor">#include &quot;packager/media/codecs/h264_parser.h&quot;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;</div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#include &quot;packager/base/logging.h&quot;</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/buffer_reader.h&quot;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;</div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="keyword">namespace </span>shaka {</div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="keyword">namespace </span>media {</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment">// Implemented according to ISO/IEC 14496-10:2005 7.4.2.1 Sequence parameter set</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment">// RBSP semantics.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="keywordtype">bool</span> ExtractResolutionFromSps(<span class="keyword">const</span> H264Sps&amp; sps,</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; uint32_t* coded_width,</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160; uint32_t* coded_height,</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; uint32_t* pixel_width,</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160; uint32_t* pixel_height) {</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160; <span class="keywordtype">int</span> crop_x = 0;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; <span class="keywordtype">int</span> crop_y = 0;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; <span class="keywordflow">if</span> (sps.frame_cropping_flag) {</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; <span class="keywordtype">int</span> sub_width_c = 0;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; <span class="keywordtype">int</span> sub_height_c = 0;</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; <span class="comment">// Table 6-1.</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; <span class="keywordflow">switch</span> (sps.chroma_format_idc) {</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; <span class="keywordflow">case</span> 0: <span class="comment">// monochrome</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; <span class="comment">// SubWidthC and SubHeightC are not defined for monochrome. For ease of</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; <span class="comment">// computation afterwards, assign both to 1.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; sub_width_c = 1;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; sub_height_c = 1;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <span class="keywordflow">case</span> 1: <span class="comment">// 4:2:0</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; sub_width_c = 2;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; sub_height_c = 2;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keywordflow">case</span> 2: <span class="comment">// 4:2:2</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; sub_width_c = 2;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; sub_height_c = 1;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keywordflow">case</span> 3: <span class="comment">// 4:4:4</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; sub_width_c = 1;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; sub_height_c = 1;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Unexpected chroma_format_idc &quot;</span> &lt;&lt; sps.chroma_format_idc;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; }</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="comment">// Formula 7-16, 7-17, 7-18, 7-19.</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordtype">int</span> crop_unit_x = sub_width_c;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordtype">int</span> crop_unit_y = sub_height_c * (2 - (sps.frame_mbs_only_flag ? 1 : 0));</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; crop_x = crop_unit_x *</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; (sps.frame_crop_left_offset + sps.frame_crop_right_offset);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; crop_y = crop_unit_y *</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; (sps.frame_crop_top_offset + sps.frame_crop_bottom_offset);</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; }</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="comment">// Formula 7-10, 7-11.</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keywordtype">int</span> pic_width_in_mbs = sps.pic_width_in_mbs_minus1 + 1;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; *coded_width = pic_width_in_mbs * 16 - crop_x;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="comment">// Formula 7-13, 7-15.</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keywordtype">int</span> pic_height_in_mbs = (2 - (sps.frame_mbs_only_flag ? 1 : 0)) *</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; (sps.pic_height_in_map_units_minus1 + 1);</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; *coded_height = pic_height_in_mbs * 16 - crop_y;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="comment">// 0 means it wasn&#39;t in the SPS and therefore assume 1.</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; *pixel_width = sps.sar_width == 0 ? 1 : sps.sar_width;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; *pixel_height = sps.sar_height == 0 ? 1 : sps.sar_height;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; DVLOG(2) &lt;&lt; <span class="stringliteral">&quot;Found coded_width: &quot;</span> &lt;&lt; *coded_width</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; &lt;&lt; <span class="stringliteral">&quot; coded_height: &quot;</span> &lt;&lt; *coded_height</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; &lt;&lt; <span class="stringliteral">&quot; pixel_width: &quot;</span> &lt;&lt; *pixel_width</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; &lt;&lt; <span class="stringliteral">&quot; pixel_height: &quot;</span> &lt;&lt; *pixel_height;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;}</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="keywordtype">bool</span> H264SliceHeader::IsPSlice()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <span class="keywordflow">return</span> (slice_type % 5 == kPSlice);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;}</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="keywordtype">bool</span> H264SliceHeader::IsBSlice()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="keywordflow">return</span> (slice_type % 5 == kBSlice);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;}</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="keywordtype">bool</span> H264SliceHeader::IsISlice()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordflow">return</span> (slice_type % 5 == kISlice);</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;}</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;<span class="keywordtype">bool</span> H264SliceHeader::IsSPSlice()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keywordflow">return</span> (slice_type % 5 == kSPSlice);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;}</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="keywordtype">bool</span> H264SliceHeader::IsSISlice()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keywordflow">return</span> (slice_type % 5 == kSISlice);</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;}</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;H264Sps::H264Sps() {</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; memset(<span class="keyword">this</span>, 0, <span class="keyword">sizeof</span>(*<span class="keyword">this</span>));</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;}</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;H264Pps::H264Pps() {</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; memset(<span class="keyword">this</span>, 0, <span class="keyword">sizeof</span>(*<span class="keyword">this</span>));</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;}</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;H264SliceHeader::H264SliceHeader() {</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; memset(<span class="keyword">this</span>, 0, <span class="keyword">sizeof</span>(*<span class="keyword">this</span>));</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;}</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;H264SEIMessage::H264SEIMessage() {</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; memset(<span class="keyword">this</span>, 0, <span class="keyword">sizeof</span>(*<span class="keyword">this</span>));</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;}</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<span class="preprocessor">#define READ_BITS_OR_RETURN(num_bits, out) \</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;<span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;<span class="preprocessor"> if (!br-&gt;ReadBits(num_bits, (out))) { \</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;<span class="preprocessor"> DVLOG(1) \</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;<span class="preprocessor"> &lt;&lt; &quot;Error in stream: unexpected EOS while trying to read &quot; #out; \</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;<span class="preprocessor"> return kInvalidStream; \</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;<span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;<span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;<span class="preprocessor">#define READ_BOOL_OR_RETURN(out) \</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;<span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="preprocessor"> int _out; \</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;<span class="preprocessor"> if (!br-&gt;ReadBits(1, &amp;_out)) { \</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<span class="preprocessor"> DVLOG(1) \</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="preprocessor"> &lt;&lt; &quot;Error in stream: unexpected EOS while trying to read &quot; #out; \</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;<span class="preprocessor"> return kInvalidStream; \</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="preprocessor"> *(out) = _out != 0; \</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="preprocessor">#define READ_UE_OR_RETURN(out) \</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;<span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;<span class="preprocessor"> if (!br-&gt;ReadUE(out)) { \</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;<span class="preprocessor"> DVLOG(1) &lt;&lt; &quot;Error in stream: invalid value while trying to read &quot; #out; \</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;<span class="preprocessor"> return kInvalidStream; \</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;<span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="preprocessor">#define READ_SE_OR_RETURN(out) \</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="preprocessor"> if (!br-&gt;ReadSE(out)) { \</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;<span class="preprocessor"> DVLOG(1) &lt;&lt; &quot;Error in stream: invalid value while trying to read &quot; #out; \</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;<span class="preprocessor"> return kInvalidStream; \</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;<span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;<span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="preprocessor">#define IN_RANGE_OR_RETURN(val, min, max) \</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="preprocessor"> if ((val) &lt; (min) || (val) &gt; (max)) { \</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="preprocessor"> DVLOG(1) &lt;&lt; &quot;Error in stream: invalid value, expected &quot; #val &quot; to be&quot; \</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;<span class="preprocessor"> &lt;&lt; &quot; in range [&quot; &lt;&lt; (min) &lt;&lt; &quot;:&quot; &lt;&lt; (max) &lt;&lt; &quot;]&quot; \</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="preprocessor"> &lt;&lt; &quot; found &quot; &lt;&lt; (val) &lt;&lt; &quot; instead&quot;; \</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<span class="preprocessor"> return kInvalidStream; \</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;<span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;<span class="preprocessor">#define TRUE_OR_RETURN(a) \</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;<span class="preprocessor"> do { \</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;<span class="preprocessor"> if (!(a)) { \</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;<span class="preprocessor"> DVLOG(1) &lt;&lt; &quot;Error in stream: invalid value, expected &quot; &lt;&lt; #a; \</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="preprocessor"> return kInvalidStream; \</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="preprocessor"> } \</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="preprocessor"> } while (0)</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="keyword">enum</span> AspectRatioIdc {</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; kExtendedSar = 255,</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;};</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;<span class="comment">// ISO 14496 part 10</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;<span class="comment">// VUI parameters: Table E-1 &quot;Meaning of sample aspect ratio indicator&quot;</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kTableSarWidth[] = {</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; 0, 1, 12, 10, 16, 40, 24, 20, 32, 80, 18, 15, 64, 160, 4, 3, 2</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;};</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kTableSarHeight[] = {</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; 0, 1, 11, 11, 11, 33, 11, 11, 11, 33, 11, 11, 33, 99, 3, 2, 1</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160;};</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;static_assert(arraysize(kTableSarWidth) == arraysize(kTableSarHeight),</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="stringliteral">&quot;sar_tables_must_have_same_size&quot;</span>);</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;H264Parser::H264Parser() {}</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;H264Parser::~H264Parser() {}</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160;</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;<span class="keyword">const</span> H264Pps* H264Parser::GetPps(<span class="keywordtype">int</span> pps_id) {</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; <span class="keywordflow">return</span> active_PPSes_[pps_id].get();</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160;}</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160;<span class="keyword">const</span> H264Sps* H264Parser::GetSps(<span class="keywordtype">int</span> sps_id) {</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; <span class="keywordflow">return</span> active_SPSes_[sps_id].get();</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160;}</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160;<span class="comment">// Default scaling lists (per spec).</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kDefault4x4Intra[kH264ScalingList4x4Length] = {</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; 6, 13, 13, 20, 20, 20, 28, 28, 28, 28, 32, 32, 32, 37, 37, 42, };</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kDefault4x4Inter[kH264ScalingList4x4Length] = {</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; 10, 14, 14, 20, 20, 20, 24, 24, 24, 24, 27, 27, 27, 30, 30, 34, };</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160;</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kDefault8x8Intra[kH264ScalingList8x8Length] = {</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; 6, 10, 10, 13, 11, 13, 16, 16, 16, 16, 18, 18, 18, 18, 18, 23,</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; 23, 23, 23, 23, 23, 25, 25, 25, 25, 25, 25, 25, 27, 27, 27, 27,</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; 27, 27, 27, 27, 29, 29, 29, 29, 29, 29, 29, 31, 31, 31, 31, 31,</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; 31, 33, 33, 33, 33, 33, 36, 36, 36, 36, 38, 38, 38, 40, 40, 42, };</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160;</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kDefault8x8Inter[kH264ScalingList8x8Length] = {</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; 9, 13, 13, 15, 13, 15, 17, 17, 17, 17, 19, 19, 19, 19, 19, 21,</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 24, 24, 24, 24,</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 27, 27, 27, 27, 27,</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; 27, 28, 28, 28, 28, 28, 30, 30, 30, 30, 32, 32, 32, 33, 33, 35, };</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160;</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> DefaultScalingList4x4(</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; <span class="keywordtype">int</span> i,</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="keywordtype">int</span> scaling_list4x4[][kH264ScalingList4x4Length]) {</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; DCHECK_LT(i, 6);</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; <span class="keywordflow">if</span> (i &lt; 3)</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; memcpy(scaling_list4x4[i], kDefault4x4Intra, <span class="keyword">sizeof</span>(kDefault4x4Intra));</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span> (i &lt; 6)</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; memcpy(scaling_list4x4[i], kDefault4x4Inter, <span class="keyword">sizeof</span>(kDefault4x4Inter));</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160;}</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160;</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> DefaultScalingList8x8(</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; <span class="keywordtype">int</span> i,</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; <span class="keywordtype">int</span> scaling_list8x8[][kH264ScalingList8x8Length]) {</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; DCHECK_LT(i, 6);</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160;</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; <span class="keywordflow">if</span> (i % 2 == 0)</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; memcpy(scaling_list8x8[i], kDefault8x8Intra, <span class="keyword">sizeof</span>(kDefault8x8Intra));</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160; memcpy(scaling_list8x8[i], kDefault8x8Inter, <span class="keyword">sizeof</span>(kDefault8x8Inter));</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160;}</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160;</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> FallbackScalingList4x4(</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; <span class="keywordtype">int</span> i,</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> default_scaling_list_intra[],</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> default_scaling_list_inter[],</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; <span class="keywordtype">int</span> scaling_list4x4[][kH264ScalingList4x4Length]) {</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kScalingList4x4ByteSize =</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; <span class="keyword">sizeof</span>(scaling_list4x4[0][0]) * kH264ScalingList4x4Length;</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160;</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; <span class="keywordflow">switch</span> (i) {</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160; <span class="keywordflow">case</span> 0:</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; memcpy(scaling_list4x4[i], default_scaling_list_intra,</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; kScalingList4x4ByteSize);</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160;</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; <span class="keywordflow">case</span> 1:</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; memcpy(scaling_list4x4[i], scaling_list4x4[0], kScalingList4x4ByteSize);</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160;</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160; <span class="keywordflow">case</span> 2:</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; memcpy(scaling_list4x4[i], scaling_list4x4[1], kScalingList4x4ByteSize);</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160;</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160; <span class="keywordflow">case</span> 3:</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; memcpy(scaling_list4x4[i], default_scaling_list_inter,</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; kScalingList4x4ByteSize);</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160;</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160; <span class="keywordflow">case</span> 4:</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; memcpy(scaling_list4x4[i], scaling_list4x4[3], kScalingList4x4ByteSize);</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160;</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; <span class="keywordflow">case</span> 5:</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; memcpy(scaling_list4x4[i], scaling_list4x4[4], kScalingList4x4ByteSize);</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160;</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; NOTREACHED();</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; }</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160;}</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160;</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> FallbackScalingList8x8(</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160; <span class="keywordtype">int</span> i,</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> default_scaling_list_intra[],</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> default_scaling_list_inter[],</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; <span class="keywordtype">int</span> scaling_list8x8[][kH264ScalingList8x8Length]) {</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kScalingList8x8ByteSize =</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; <span class="keyword">sizeof</span>(scaling_list8x8[0][0]) * kH264ScalingList8x8Length;</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160;</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; <span class="keywordflow">switch</span> (i) {</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160; <span class="keywordflow">case</span> 0:</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; memcpy(scaling_list8x8[i], default_scaling_list_intra,</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160; kScalingList8x8ByteSize);</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160;</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160; <span class="keywordflow">case</span> 1:</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160; memcpy(scaling_list8x8[i], default_scaling_list_inter,</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; kScalingList8x8ByteSize);</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160;</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160; <span class="keywordflow">case</span> 2:</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; memcpy(scaling_list8x8[i], scaling_list8x8[0], kScalingList8x8ByteSize);</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160;</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160; <span class="keywordflow">case</span> 3:</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160; memcpy(scaling_list8x8[i], scaling_list8x8[1], kScalingList8x8ByteSize);</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160;</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160; <span class="keywordflow">case</span> 4:</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160; memcpy(scaling_list8x8[i], scaling_list8x8[2], kScalingList8x8ByteSize);</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160;</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; <span class="keywordflow">case</span> 5:</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160; memcpy(scaling_list8x8[i], scaling_list8x8[3], kScalingList8x8ByteSize);</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160;</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160; NOTREACHED();</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160; }</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160;}</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160;</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160;H264Parser::Result H264Parser::ParseScalingList(H26xBitReader* br,</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160; <span class="keywordtype">int</span> size,</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160; <span class="keywordtype">int</span>* scaling_list,</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160; <span class="keywordtype">bool</span>* use_default) {</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160; <span class="comment">// See chapter 7.3.2.1.1.1.</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160; <span class="keywordtype">int</span> last_scale = 8;</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160; <span class="keywordtype">int</span> next_scale = 8;</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160; <span class="keywordtype">int</span> delta_scale;</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160;</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160; *use_default = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160;</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j &lt; size; ++j) {</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160; <span class="keywordflow">if</span> (next_scale != 0) {</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160; READ_SE_OR_RETURN(&amp;delta_scale);</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160; IN_RANGE_OR_RETURN(delta_scale, -128, 127);</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160; next_scale = (last_scale + delta_scale + 256) &amp; 0xff;</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>&#160;</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>&#160; <span class="keywordflow">if</span> (j == 0 &amp;&amp; next_scale == 0) {</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160; *use_default = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160; }</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160; }</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160;</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160; scaling_list[j] = (next_scale == 0) ? last_scale : next_scale;</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>&#160; last_scale = scaling_list[j];</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>&#160; }</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>&#160;</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>&#160;}</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>&#160;</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>&#160;H264Parser::Result H264Parser::ParseSpsScalingLists(H26xBitReader* br,</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>&#160; H264Sps* sps) {</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>&#160; <span class="comment">// See 7.4.2.1.1.</span></div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160; <span class="keywordtype">bool</span> seq_scaling_list_present_flag;</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160; <span class="keywordtype">bool</span> use_default;</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>&#160; Result res;</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>&#160;</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>&#160; <span class="comment">// Parse scaling_list4x4.</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 6; ++i) {</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>&#160; READ_BOOL_OR_RETURN(&amp;seq_scaling_list_present_flag);</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>&#160;</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>&#160; <span class="keywordflow">if</span> (seq_scaling_list_present_flag) {</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>&#160; res = ParseScalingList(br,</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>&#160; arraysize(sps-&gt;scaling_list4x4[i]),</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160; sps-&gt;scaling_list4x4[i],</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>&#160; &amp;use_default);</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>&#160;</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>&#160; <span class="keywordflow">if</span> (use_default)</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>&#160; DefaultScalingList4x4(i, sps-&gt;scaling_list4x4);</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>&#160;</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>&#160; FallbackScalingList4x4(</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>&#160; i, kDefault4x4Intra, kDefault4x4Inter, sps-&gt;scaling_list4x4);</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>&#160; }</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160; }</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160;</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160; <span class="comment">// Parse scaling_list8x8.</span></div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; ((sps-&gt;chroma_format_idc != 3) ? 2 : 6); ++i) {</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>&#160; READ_BOOL_OR_RETURN(&amp;seq_scaling_list_present_flag);</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>&#160;</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>&#160; <span class="keywordflow">if</span> (seq_scaling_list_present_flag) {</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>&#160; res = ParseScalingList(br,</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>&#160; arraysize(sps-&gt;scaling_list8x8[i]),</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>&#160; sps-&gt;scaling_list8x8[i],</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>&#160; &amp;use_default);</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>&#160;</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160; <span class="keywordflow">if</span> (use_default)</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>&#160; DefaultScalingList8x8(i, sps-&gt;scaling_list8x8);</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>&#160;</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>&#160; FallbackScalingList8x8(</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>&#160; i, kDefault8x8Intra, kDefault8x8Inter, sps-&gt;scaling_list8x8);</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>&#160; }</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>&#160; }</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160;</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>&#160;}</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>&#160;</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>&#160;H264Parser::Result H264Parser::ParsePpsScalingLists(H26xBitReader* br,</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>&#160; <span class="keyword">const</span> H264Sps&amp; sps,</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>&#160; H264Pps* pps) {</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>&#160; <span class="comment">// See 7.4.2.2.</span></div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>&#160; <span class="keywordtype">bool</span> pic_scaling_list_present_flag;</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>&#160; <span class="keywordtype">bool</span> use_default;</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>&#160; Result res;</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>&#160;</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 6; ++i) {</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>&#160; READ_BOOL_OR_RETURN(&amp;pic_scaling_list_present_flag);</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>&#160;</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>&#160; <span class="keywordflow">if</span> (pic_scaling_list_present_flag) {</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>&#160; res = ParseScalingList(br,</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>&#160; arraysize(pps-&gt;scaling_list4x4[i]),</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>&#160; pps-&gt;scaling_list4x4[i],</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>&#160; &amp;use_default);</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>&#160;</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>&#160; <span class="keywordflow">if</span> (use_default)</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>&#160; DefaultScalingList4x4(i, pps-&gt;scaling_list4x4);</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>&#160;</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>&#160; <span class="keywordflow">if</span> (sps.seq_scaling_matrix_present_flag) {</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>&#160; <span class="comment">// Table 7-2 fallback rule A in spec.</span></div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160; FallbackScalingList4x4(</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>&#160; i, kDefault4x4Intra, kDefault4x4Inter, pps-&gt;scaling_list4x4);</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>&#160; <span class="comment">// Table 7-2 fallback rule B in spec.</span></div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>&#160; FallbackScalingList4x4(i,</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160; sps.scaling_list4x4[0],</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>&#160; sps.scaling_list4x4[3],</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>&#160; pps-&gt;scaling_list4x4);</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>&#160; }</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>&#160; }</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>&#160; }</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>&#160;</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>&#160; <span class="keywordflow">if</span> (pps-&gt;transform_8x8_mode_flag) {</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; ((sps.chroma_format_idc != 3) ? 2 : 6); ++i) {</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>&#160; READ_BOOL_OR_RETURN(&amp;pic_scaling_list_present_flag);</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>&#160;</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>&#160; <span class="keywordflow">if</span> (pic_scaling_list_present_flag) {</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160; res = ParseScalingList(br,</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160; arraysize(pps-&gt;scaling_list8x8[i]),</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160; pps-&gt;scaling_list8x8[i],</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>&#160; &amp;use_default);</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>&#160;</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>&#160; <span class="keywordflow">if</span> (use_default)</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>&#160; DefaultScalingList8x8(i, pps-&gt;scaling_list8x8);</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>&#160;</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>&#160; <span class="keywordflow">if</span> (sps.seq_scaling_matrix_present_flag) {</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>&#160; <span class="comment">// Table 7-2 fallback rule A in spec.</span></div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>&#160; FallbackScalingList8x8(</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>&#160; i, kDefault8x8Intra, kDefault8x8Inter, pps-&gt;scaling_list8x8);</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>&#160; <span class="comment">// Table 7-2 fallback rule B in spec.</span></div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>&#160; FallbackScalingList8x8(i,</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>&#160; sps.scaling_list8x8[0],</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>&#160; sps.scaling_list8x8[1],</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>&#160; pps-&gt;scaling_list8x8);</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>&#160; }</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>&#160; }</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>&#160; }</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>&#160; }</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>&#160;}</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>&#160;</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>&#160;H264Parser::Result H264Parser::ParseAndIgnoreHRDParameters(</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>&#160; H26xBitReader* br, <span class="keywordtype">bool</span>* hrd_parameters_present) {</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>&#160; <span class="keywordtype">int</span> data;</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// {nal,vcl}_hrd_parameters_present_flag</span></div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>&#160; <span class="keywordflow">if</span> (!data)</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>&#160;</div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>&#160; *hrd_parameters_present = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>&#160;</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>&#160; <span class="keywordtype">int</span> cpb_cnt_minus1;</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>&#160; READ_UE_OR_RETURN(&amp;cpb_cnt_minus1);</div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>&#160; IN_RANGE_OR_RETURN(cpb_cnt_minus1, 0, 31);</div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>&#160; READ_BITS_OR_RETURN(8, &amp;data); <span class="comment">// bit_rate_scale, cpb_size_scale</span></div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt;= cpb_cnt_minus1; ++i) {</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>&#160; READ_UE_OR_RETURN(&amp;data); <span class="comment">// bit_rate_value_minus1[i]</span></div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>&#160; READ_UE_OR_RETURN(&amp;data); <span class="comment">// cpb_size_value_minus1[i]</span></div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// cbr_flag</span></div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>&#160; }</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>&#160; READ_BITS_OR_RETURN(20, &amp;data); <span class="comment">// cpb/dpb delays, etc.</span></div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>&#160;</div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>&#160;}</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>&#160;</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>&#160;H264Parser::Result H264Parser::ParseVUIParameters(H26xBitReader* br,</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>&#160; H264Sps* sps) {</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>&#160; <span class="keywordtype">bool</span> aspect_ratio_info_present_flag;</div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>&#160; READ_BOOL_OR_RETURN(&amp;aspect_ratio_info_present_flag);</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>&#160; <span class="keywordflow">if</span> (aspect_ratio_info_present_flag) {</div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>&#160; <span class="keywordtype">int</span> aspect_ratio_idc;</div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>&#160; READ_BITS_OR_RETURN(8, &amp;aspect_ratio_idc);</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>&#160; <span class="keywordflow">if</span> (aspect_ratio_idc == kExtendedSar) {</div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>&#160; READ_BITS_OR_RETURN(16, &amp;sps-&gt;sar_width);</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>&#160; READ_BITS_OR_RETURN(16, &amp;sps-&gt;sar_height);</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> max_aspect_ratio_idc = arraysize(kTableSarWidth) - 1;</div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>&#160; IN_RANGE_OR_RETURN(aspect_ratio_idc, 0, max_aspect_ratio_idc);</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>&#160; sps-&gt;sar_width = kTableSarWidth[aspect_ratio_idc];</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>&#160; sps-&gt;sar_height = kTableSarHeight[aspect_ratio_idc];</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>&#160; }</div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>&#160; }</div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>&#160;</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>&#160; <span class="keywordtype">int</span> data;</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>&#160; <span class="comment">// Read and ignore overscan and video signal type info.</span></div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// overscan_info_present_flag</span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>&#160; <span class="keywordflow">if</span> (data)</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// overscan_appropriate_flag</span></div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>&#160;</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// video_signal_type_present_flag</span></div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>&#160; <span class="keywordflow">if</span> (data) {</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>&#160; READ_BITS_OR_RETURN(3, &amp;data); <span class="comment">// video_format</span></div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// video_full_range_flag</span></div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// colour_description_present_flag</span></div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>&#160; <span class="keywordflow">if</span> (data)</div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>&#160; READ_BITS_OR_RETURN(24, &amp;data); <span class="comment">// color description syntax elements</span></div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>&#160; }</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>&#160;</div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// chroma_loc_info_present_flag</span></div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>&#160; <span class="keywordflow">if</span> (data) {</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>&#160; READ_UE_OR_RETURN(&amp;data); <span class="comment">// chroma_sample_loc_type_top_field</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>&#160; READ_UE_OR_RETURN(&amp;data); <span class="comment">// chroma_sample_loc_type_bottom_field</span></div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>&#160; }</div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>&#160;</div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>&#160; <span class="comment">// Read and ignore timing info.</span></div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// timing_info_present_flag</span></div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>&#160; <span class="keywordflow">if</span> (data) {</div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>&#160; READ_BITS_OR_RETURN(16, &amp;data); <span class="comment">// num_units_in_tick</span></div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>&#160; READ_BITS_OR_RETURN(16, &amp;data); <span class="comment">// num_units_in_tick</span></div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>&#160; READ_BITS_OR_RETURN(16, &amp;data); <span class="comment">// time_scale</span></div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>&#160; READ_BITS_OR_RETURN(16, &amp;data); <span class="comment">// time_scale</span></div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// fixed_frame_rate_flag</span></div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>&#160; }</div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>&#160;</div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>&#160; <span class="comment">// Read and ignore NAL HRD parameters, if present.</span></div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>&#160; <span class="keywordtype">bool</span> hrd_parameters_present = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>&#160; Result res = ParseAndIgnoreHRDParameters(br, &amp;hrd_parameters_present);</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>&#160;</div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>&#160; <span class="comment">// Read and ignore VCL HRD parameters, if present.</span></div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>&#160; res = ParseAndIgnoreHRDParameters(br, &amp;hrd_parameters_present);</div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>&#160;</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>&#160; <span class="keywordflow">if</span> (hrd_parameters_present) <span class="comment">// One of NAL or VCL params present is enough.</span></div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// low_delay_hrd_flag</span></div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>&#160;</div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// pic_struct_present_flag</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;bitstream_restriction_flag);</div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>&#160; <span class="keywordflow">if</span> (sps-&gt;bitstream_restriction_flag) {</div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>&#160; READ_BOOL_OR_RETURN(&amp;data); <span class="comment">// motion_vectors_over_pic_boundaries_flag</span></div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>&#160; READ_UE_OR_RETURN(&amp;data); <span class="comment">// max_bytes_per_pic_denom</span></div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>&#160; READ_UE_OR_RETURN(&amp;data); <span class="comment">// max_bits_per_mb_denom</span></div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>&#160; READ_UE_OR_RETURN(&amp;data); <span class="comment">// log2_max_mv_length_horizontal</span></div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>&#160; READ_UE_OR_RETURN(&amp;data); <span class="comment">// log2_max_mv_length_vertical</span></div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;max_num_reorder_frames);</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;max_dec_frame_buffering);</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>&#160; TRUE_OR_RETURN(sps-&gt;max_dec_frame_buffering &gt;= sps-&gt;max_num_ref_frames);</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>&#160; IN_RANGE_OR_RETURN(</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>&#160; sps-&gt;max_num_reorder_frames, 0, sps-&gt;max_dec_frame_buffering);</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>&#160; }</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>&#160;</div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>&#160;}</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>&#160;</div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> FillDefaultSeqScalingLists(H264Sps* sps) {</div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 6; ++i)</div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j &lt; kH264ScalingList4x4Length; ++j)</div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>&#160; sps-&gt;scaling_list4x4[i][j] = 16;</div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>&#160;</div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>&#160; for (<span class="keywordtype">int</span> i = 0; i &lt; 6; ++i)</div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j &lt; kH264ScalingList8x8Length; ++j)</div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>&#160; sps-&gt;scaling_list8x8[i][j] = 16;</div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>&#160;}</div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>&#160;</div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>&#160;H264Parser::Result H264Parser::ParseSps(<span class="keyword">const</span> Nalu&amp; nalu, <span class="keywordtype">int</span>* sps_id) {</div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>&#160; <span class="comment">// See 7.4.2.1.</span></div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>&#160; <span class="keywordtype">int</span> data;</div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>&#160; Result res;</div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>&#160; H26xBitReader reader;</div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>&#160; reader.Initialize(nalu.data() + nalu.header_size(), nalu.payload_size());</div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>&#160; H26xBitReader* br = &amp;reader;</div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>&#160;</div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>&#160; *sps_id = -1;</div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>&#160;</div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>&#160; std::unique_ptr&lt;H264Sps&gt; sps(<span class="keyword">new</span> H264Sps());</div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>&#160;</div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>&#160; READ_BITS_OR_RETURN(8, &amp;sps-&gt;profile_idc);</div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;constraint_set0_flag);</div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;constraint_set1_flag);</div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;constraint_set2_flag);</div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;constraint_set3_flag);</div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;constraint_set4_flag);</div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;constraint_set5_flag);</div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>&#160; READ_BITS_OR_RETURN(2, &amp;data); <span class="comment">// reserved_zero_2bits</span></div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>&#160; READ_BITS_OR_RETURN(8, &amp;sps-&gt;level_idc);</div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;seq_parameter_set_id);</div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>&#160; TRUE_OR_RETURN(sps-&gt;seq_parameter_set_id &lt; 32);</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>&#160;</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>&#160; <span class="keywordflow">if</span> (sps-&gt;profile_idc == 100 || sps-&gt;profile_idc == 110 ||</div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>&#160; sps-&gt;profile_idc == 122 || sps-&gt;profile_idc == 244 ||</div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>&#160; sps-&gt;profile_idc == 44 || sps-&gt;profile_idc == 83 ||</div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>&#160; sps-&gt;profile_idc == 86 || sps-&gt;profile_idc == 118 ||</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>&#160; sps-&gt;profile_idc == 128) {</div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;chroma_format_idc);</div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>&#160; TRUE_OR_RETURN(sps-&gt;chroma_format_idc &lt; 4);</div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>&#160;</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>&#160; <span class="keywordflow">if</span> (sps-&gt;chroma_format_idc == 3)</div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;separate_colour_plane_flag);</div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>&#160;</div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;bit_depth_luma_minus8);</div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>&#160; TRUE_OR_RETURN(sps-&gt;bit_depth_luma_minus8 &lt; 7);</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>&#160;</div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;bit_depth_chroma_minus8);</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>&#160; TRUE_OR_RETURN(sps-&gt;bit_depth_chroma_minus8 &lt; 7);</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>&#160;</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;qpprime_y_zero_transform_bypass_flag);</div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;seq_scaling_matrix_present_flag);</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>&#160;</div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>&#160; <span class="keywordflow">if</span> (sps-&gt;seq_scaling_matrix_present_flag) {</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>&#160; DVLOG(4) &lt;&lt; <span class="stringliteral">&quot;Scaling matrix present&quot;</span>;</div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>&#160; res = ParseSpsScalingLists(br, sps.get());</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>&#160; FillDefaultSeqScalingLists(sps.get());</div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>&#160; }</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>&#160; sps-&gt;chroma_format_idc = 1;</div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>&#160; FillDefaultSeqScalingLists(sps.get());</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>&#160; }</div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>&#160;</div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>&#160; <span class="keywordflow">if</span> (sps-&gt;separate_colour_plane_flag)</div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>&#160; sps-&gt;chroma_array_type = 0;</div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>&#160; sps-&gt;chroma_array_type = sps-&gt;chroma_format_idc;</div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>&#160;</div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;log2_max_frame_num_minus4);</div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>&#160; TRUE_OR_RETURN(sps-&gt;log2_max_frame_num_minus4 &lt; 13);</div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>&#160;</div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;pic_order_cnt_type);</div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>&#160; TRUE_OR_RETURN(sps-&gt;pic_order_cnt_type &lt; 3);</div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>&#160;</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>&#160; sps-&gt;expected_delta_per_pic_order_cnt_cycle = 0;</div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>&#160; <span class="keywordflow">if</span> (sps-&gt;pic_order_cnt_type == 0) {</div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;log2_max_pic_order_cnt_lsb_minus4);</div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>&#160; TRUE_OR_RETURN(sps-&gt;log2_max_pic_order_cnt_lsb_minus4 &lt; 13);</div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sps-&gt;pic_order_cnt_type == 1) {</div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;delta_pic_order_always_zero_flag);</div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>&#160; READ_SE_OR_RETURN(&amp;sps-&gt;offset_for_non_ref_pic);</div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>&#160; READ_SE_OR_RETURN(&amp;sps-&gt;offset_for_top_to_bottom_field);</div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;num_ref_frames_in_pic_order_cnt_cycle);</div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>&#160; TRUE_OR_RETURN(sps-&gt;num_ref_frames_in_pic_order_cnt_cycle &lt; 255);</div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>&#160;</div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; sps-&gt;num_ref_frames_in_pic_order_cnt_cycle; ++i) {</div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>&#160; READ_SE_OR_RETURN(&amp;sps-&gt;offset_for_ref_frame[i]);</div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>&#160; sps-&gt;expected_delta_per_pic_order_cnt_cycle +=</div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>&#160; sps-&gt;offset_for_ref_frame[i];</div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>&#160; }</div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>&#160; }</div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>&#160;</div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;max_num_ref_frames);</div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;gaps_in_frame_num_value_allowed_flag);</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>&#160;</div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;pic_width_in_mbs_minus1);</div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;pic_height_in_map_units_minus1);</div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>&#160;</div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;frame_mbs_only_flag);</div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>&#160; <span class="keywordflow">if</span> (!sps-&gt;frame_mbs_only_flag)</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;mb_adaptive_frame_field_flag);</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>&#160;</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;direct_8x8_inference_flag);</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>&#160;</div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;frame_cropping_flag);</div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>&#160; <span class="keywordflow">if</span> (sps-&gt;frame_cropping_flag) {</div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;frame_crop_left_offset);</div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;frame_crop_right_offset);</div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;frame_crop_top_offset);</div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>&#160; READ_UE_OR_RETURN(&amp;sps-&gt;frame_crop_bottom_offset);</div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>&#160; }</div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>&#160;</div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>&#160; READ_BOOL_OR_RETURN(&amp;sps-&gt;vui_parameters_present_flag);</div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>&#160; <span class="keywordflow">if</span> (sps-&gt;vui_parameters_present_flag) {</div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>&#160; DVLOG(4) &lt;&lt; <span class="stringliteral">&quot;VUI parameters present&quot;</span>;</div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>&#160; res = ParseVUIParameters(br, sps.get());</div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>&#160; }</div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span>&#160;</div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>&#160; <span class="comment">// If an SPS with the same id already exists, replace it.</span></div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>&#160; *sps_id = sps-&gt;seq_parameter_set_id;</div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>&#160; active_SPSes_[*sps_id] = std::move(sps);</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>&#160;</div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>&#160;}</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>&#160;</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>&#160;H264Parser::Result H264Parser::ParsePps(<span class="keyword">const</span> Nalu&amp; nalu, <span class="keywordtype">int</span>* pps_id) {</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>&#160; <span class="comment">// See 7.4.2.2.</span></div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>&#160; <span class="keyword">const</span> H264Sps* sps;</div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>&#160; Result res;</div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>&#160; H26xBitReader reader;</div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>&#160; reader.Initialize(nalu.data() + nalu.header_size(), nalu.payload_size());</div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>&#160; H26xBitReader* br = &amp;reader;</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>&#160;</div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>&#160; *pps_id = -1;</div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>&#160;</div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>&#160; std::unique_ptr&lt;H264Pps&gt; pps(<span class="keyword">new</span> H264Pps());</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>&#160;</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>&#160; READ_UE_OR_RETURN(&amp;pps-&gt;pic_parameter_set_id);</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>&#160; READ_UE_OR_RETURN(&amp;pps-&gt;seq_parameter_set_id);</div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>&#160; TRUE_OR_RETURN(pps-&gt;seq_parameter_set_id &lt; 32);</div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>&#160;</div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>&#160; sps = GetSps(pps-&gt;seq_parameter_set_id);</div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>&#160; TRUE_OR_RETURN(sps);</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>&#160;</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>&#160; READ_BOOL_OR_RETURN(&amp;pps-&gt;entropy_coding_mode_flag);</div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>&#160; READ_BOOL_OR_RETURN(&amp;pps-&gt;bottom_field_pic_order_in_frame_present_flag);</div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>&#160;</div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>&#160; READ_UE_OR_RETURN(&amp;pps-&gt;num_slice_groups_minus1);</div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>&#160; <span class="keywordflow">if</span> (pps-&gt;num_slice_groups_minus1 &gt; 1) {</div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>&#160; DVLOG(1) &lt;&lt; <span class="stringliteral">&quot;Slice groups not supported&quot;</span>;</div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>&#160; <span class="keywordflow">return</span> kUnsupportedStream;</div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>&#160; }</div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>&#160;</div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>&#160; READ_UE_OR_RETURN(&amp;pps-&gt;num_ref_idx_l0_default_active_minus1);</div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>&#160; TRUE_OR_RETURN(pps-&gt;num_ref_idx_l0_default_active_minus1 &lt; 32);</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>&#160;</div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>&#160; READ_UE_OR_RETURN(&amp;pps-&gt;num_ref_idx_l1_default_active_minus1);</div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>&#160; TRUE_OR_RETURN(pps-&gt;num_ref_idx_l1_default_active_minus1 &lt; 32);</div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>&#160;</div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>&#160; READ_BOOL_OR_RETURN(&amp;pps-&gt;weighted_pred_flag);</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>&#160; READ_BITS_OR_RETURN(2, &amp;pps-&gt;weighted_bipred_idc);</div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>&#160; TRUE_OR_RETURN(pps-&gt;weighted_bipred_idc &lt; 3);</div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>&#160;</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>&#160; READ_SE_OR_RETURN(&amp;pps-&gt;pic_init_qp_minus26);</div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>&#160; IN_RANGE_OR_RETURN(pps-&gt;pic_init_qp_minus26, -26, 25);</div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>&#160;</div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>&#160; READ_SE_OR_RETURN(&amp;pps-&gt;pic_init_qs_minus26);</div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>&#160; IN_RANGE_OR_RETURN(pps-&gt;pic_init_qs_minus26, -26, 25);</div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>&#160;</div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>&#160; READ_SE_OR_RETURN(&amp;pps-&gt;chroma_qp_index_offset);</div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>&#160; IN_RANGE_OR_RETURN(pps-&gt;chroma_qp_index_offset, -12, 12);</div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>&#160; pps-&gt;second_chroma_qp_index_offset = pps-&gt;chroma_qp_index_offset;</div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>&#160;</div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>&#160; READ_BOOL_OR_RETURN(&amp;pps-&gt;deblocking_filter_control_present_flag);</div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>&#160; READ_BOOL_OR_RETURN(&amp;pps-&gt;constrained_intra_pred_flag);</div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>&#160; READ_BOOL_OR_RETURN(&amp;pps-&gt;redundant_pic_cnt_present_flag);</div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>&#160;</div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>&#160; <span class="keywordflow">if</span> (br-&gt;HasMoreRBSPData()) {</div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>&#160; READ_BOOL_OR_RETURN(&amp;pps-&gt;transform_8x8_mode_flag);</div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>&#160; READ_BOOL_OR_RETURN(&amp;pps-&gt;pic_scaling_matrix_present_flag);</div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>&#160;</div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>&#160; <span class="keywordflow">if</span> (pps-&gt;pic_scaling_matrix_present_flag) {</div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>&#160; DVLOG(4) &lt;&lt; <span class="stringliteral">&quot;Picture scaling matrix present&quot;</span>;</div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>&#160; res = ParsePpsScalingLists(br, *sps, pps.get());</div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>&#160; }</div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>&#160;</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>&#160; READ_SE_OR_RETURN(&amp;pps-&gt;second_chroma_qp_index_offset);</div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>&#160; }</div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>&#160;</div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>&#160; <span class="comment">// If a PPS with the same id already exists, replace it.</span></div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>&#160; *pps_id = pps-&gt;pic_parameter_set_id;</div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>&#160; active_PPSes_[*pps_id] = std::move(pps);</div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>&#160;</div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>&#160;}</div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>&#160;</div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>&#160;H264Parser::Result H264Parser::ParseRefPicListModification(</div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>&#160; H26xBitReader* br,</div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>&#160; <span class="keywordtype">int</span> num_ref_idx_active_minus1,</div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>&#160; H264ModificationOfPicNum* ref_list_mods) {</div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>&#160; H264ModificationOfPicNum* pic_num_mod;</div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>&#160;</div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>&#160; <span class="keywordflow">if</span> (num_ref_idx_active_minus1 &gt;= 32)</div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>&#160; <span class="keywordflow">return</span> kInvalidStream;</div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>&#160;</div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 32; ++i) {</div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>&#160; pic_num_mod = &amp;ref_list_mods[i];</div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>&#160; READ_UE_OR_RETURN(&amp;pic_num_mod-&gt;modification_of_pic_nums_idc);</div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>&#160; TRUE_OR_RETURN(pic_num_mod-&gt;modification_of_pic_nums_idc &lt; 4);</div>
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>&#160;</div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>&#160; <span class="keywordflow">switch</span> (pic_num_mod-&gt;modification_of_pic_nums_idc) {</div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>&#160; <span class="keywordflow">case</span> 0:</div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span>&#160; <span class="keywordflow">case</span> 1:</div>
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>&#160; READ_UE_OR_RETURN(&amp;pic_num_mod-&gt;abs_diff_pic_num_minus1);</div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>&#160;</div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>&#160; <span class="keywordflow">case</span> 2:</div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>&#160; READ_UE_OR_RETURN(&amp;pic_num_mod-&gt;long_term_pic_num);</div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>&#160;</div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>&#160; <span class="keywordflow">case</span> 3:</div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>&#160; <span class="comment">// Per spec, list cannot be empty.</span></div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>&#160; <span class="keywordflow">if</span> (i == 0)</div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>&#160; <span class="keywordflow">return</span> kInvalidStream;</div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>&#160;</div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>&#160; <span class="keywordflow">return</span> kInvalidStream;</div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>&#160; }</div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>&#160; }</div>
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>&#160;</div>
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>&#160; <span class="comment">// If we got here, we didn&#39;t get loop end marker prematurely,</span></div>
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>&#160; <span class="comment">// so make sure it is there for our client.</span></div>
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>&#160; <span class="keywordtype">int</span> modification_of_pic_nums_idc;</div>
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>&#160; READ_UE_OR_RETURN(&amp;modification_of_pic_nums_idc);</div>
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>&#160; TRUE_OR_RETURN(modification_of_pic_nums_idc == 3);</div>
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>&#160;</div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>&#160;}</div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>&#160;</div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>&#160;H264Parser::Result H264Parser::ParseRefPicListModifications(</div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>&#160; H26xBitReader* br, H264SliceHeader* shdr) {</div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>&#160; Result res;</div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>&#160;</div>
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>&#160; <span class="keywordflow">if</span> (!shdr-&gt;IsISlice() &amp;&amp; !shdr-&gt;IsSISlice()) {</div>
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>&#160; READ_BOOL_OR_RETURN(&amp;shdr-&gt;ref_pic_list_modification_flag_l0);</div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;ref_pic_list_modification_flag_l0) {</div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>&#160; res = ParseRefPicListModification(br, shdr-&gt;num_ref_idx_l0_active_minus1,</div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>&#160; shdr-&gt;ref_list_l0_modifications);</div>
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>&#160; }</div>
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>&#160; }</div>
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>&#160;</div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;IsBSlice()) {</div>
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>&#160; READ_BOOL_OR_RETURN(&amp;shdr-&gt;ref_pic_list_modification_flag_l1);</div>
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;ref_pic_list_modification_flag_l1) {</div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>&#160; res = ParseRefPicListModification(br, shdr-&gt;num_ref_idx_l1_active_minus1,</div>
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>&#160; shdr-&gt;ref_list_l1_modifications);</div>
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>&#160; }</div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>&#160; }</div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>&#160;</div>
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>&#160;}</div>
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>&#160;</div>
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>&#160;H264Parser::Result H264Parser::ParseWeightingFactors(</div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>&#160; H26xBitReader* br,</div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>&#160; <span class="keywordtype">int</span> num_ref_idx_active_minus1,</div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>&#160; <span class="keywordtype">int</span> chroma_array_type,</div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>&#160; <span class="keywordtype">int</span> luma_log2_weight_denom,</div>
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>&#160; <span class="keywordtype">int</span> chroma_log2_weight_denom,</div>
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>&#160; H264WeightingFactors* w_facts) {</div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>&#160; <span class="keywordtype">int</span> def_luma_weight = 1 &lt;&lt; luma_log2_weight_denom;</div>
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>&#160; <span class="keywordtype">int</span> def_chroma_weight = 1 &lt;&lt; chroma_log2_weight_denom;</div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>&#160;</div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; num_ref_idx_active_minus1 + 1; ++i) {</div>
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span>&#160; READ_BOOL_OR_RETURN(&amp;w_facts-&gt;luma_weight_flag[i]);</div>
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>&#160; <span class="keywordflow">if</span> (w_facts-&gt;luma_weight_flag[i]) {</div>
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span>&#160; READ_SE_OR_RETURN(&amp;w_facts-&gt;luma_weight[i]);</div>
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>&#160; IN_RANGE_OR_RETURN(w_facts-&gt;luma_weight[i], -128, 127);</div>
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>&#160;</div>
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>&#160; READ_SE_OR_RETURN(&amp;w_facts-&gt;luma_offset[i]);</div>
<div class="line"><a name="l00867"></a><span class="lineno"> 867</span>&#160; IN_RANGE_OR_RETURN(w_facts-&gt;luma_offset[i], -128, 127);</div>
<div class="line"><a name="l00868"></a><span class="lineno"> 868</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>&#160; w_facts-&gt;luma_weight[i] = def_luma_weight;</div>
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span>&#160; w_facts-&gt;luma_offset[i] = 0;</div>
<div class="line"><a name="l00871"></a><span class="lineno"> 871</span>&#160; }</div>
<div class="line"><a name="l00872"></a><span class="lineno"> 872</span>&#160;</div>
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>&#160; <span class="keywordflow">if</span> (chroma_array_type != 0) {</div>
<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>&#160; READ_BOOL_OR_RETURN(&amp;w_facts-&gt;chroma_weight_flag[i]);</div>
<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>&#160; <span class="keywordflow">if</span> (w_facts-&gt;chroma_weight_flag[i]) {</div>
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j &lt; 2; ++j) {</div>
<div class="line"><a name="l00877"></a><span class="lineno"> 877</span>&#160; READ_SE_OR_RETURN(&amp;w_facts-&gt;chroma_weight[i][j]);</div>
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span>&#160; IN_RANGE_OR_RETURN(w_facts-&gt;chroma_weight[i][j], -128, 127);</div>
<div class="line"><a name="l00879"></a><span class="lineno"> 879</span>&#160;</div>
<div class="line"><a name="l00880"></a><span class="lineno"> 880</span>&#160; READ_SE_OR_RETURN(&amp;w_facts-&gt;chroma_offset[i][j]);</div>
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span>&#160; IN_RANGE_OR_RETURN(w_facts-&gt;chroma_offset[i][j], -128, 127);</div>
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span>&#160; }</div>
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j &lt; 2; ++j) {</div>
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>&#160; w_facts-&gt;chroma_weight[i][j] = def_chroma_weight;</div>
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span>&#160; w_facts-&gt;chroma_offset[i][j] = 0;</div>
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span>&#160; }</div>
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>&#160; }</div>
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>&#160; }</div>
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>&#160; }</div>
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>&#160;</div>
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>&#160;}</div>
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>&#160;</div>
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>&#160;H264Parser::Result H264Parser::ParsePredWeightTable(H26xBitReader* br,</div>
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>&#160; <span class="keyword">const</span> H264Sps&amp; sps,</div>
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>&#160; H264SliceHeader* shdr) {</div>
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>&#160; READ_UE_OR_RETURN(&amp;shdr-&gt;luma_log2_weight_denom);</div>
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>&#160; TRUE_OR_RETURN(shdr-&gt;luma_log2_weight_denom &lt; 8);</div>
<div class="line"><a name="l00900"></a><span class="lineno"> 900</span>&#160;</div>
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>&#160; <span class="keywordflow">if</span> (sps.chroma_array_type != 0)</div>
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>&#160; READ_UE_OR_RETURN(&amp;shdr-&gt;chroma_log2_weight_denom);</div>
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>&#160; TRUE_OR_RETURN(shdr-&gt;chroma_log2_weight_denom &lt; 8);</div>
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>&#160;</div>
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>&#160; Result res = ParseWeightingFactors(br,</div>
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>&#160; shdr-&gt;num_ref_idx_l0_active_minus1,</div>
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>&#160; sps.chroma_array_type,</div>
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>&#160; shdr-&gt;luma_log2_weight_denom,</div>
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>&#160; shdr-&gt;chroma_log2_weight_denom,</div>
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>&#160; &amp;shdr-&gt;pred_weight_table_l0);</div>
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>&#160;</div>
<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;IsBSlice()) {</div>
<div class="line"><a name="l00915"></a><span class="lineno"> 915</span>&#160; res = ParseWeightingFactors(br,</div>
<div class="line"><a name="l00916"></a><span class="lineno"> 916</span>&#160; shdr-&gt;num_ref_idx_l1_active_minus1,</div>
<div class="line"><a name="l00917"></a><span class="lineno"> 917</span>&#160; sps.chroma_array_type,</div>
<div class="line"><a name="l00918"></a><span class="lineno"> 918</span>&#160; shdr-&gt;luma_log2_weight_denom,</div>
<div class="line"><a name="l00919"></a><span class="lineno"> 919</span>&#160; shdr-&gt;chroma_log2_weight_denom,</div>
<div class="line"><a name="l00920"></a><span class="lineno"> 920</span>&#160; &amp;shdr-&gt;pred_weight_table_l1);</div>
<div class="line"><a name="l00921"></a><span class="lineno"> 921</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l00922"></a><span class="lineno"> 922</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00923"></a><span class="lineno"> 923</span>&#160; }</div>
<div class="line"><a name="l00924"></a><span class="lineno"> 924</span>&#160;</div>
<div class="line"><a name="l00925"></a><span class="lineno"> 925</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00926"></a><span class="lineno"> 926</span>&#160;}</div>
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>&#160;</div>
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>&#160;H264Parser::Result H264Parser::ParseDecRefPicMarking(H26xBitReader* br,</div>
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>&#160; H264SliceHeader* shdr) {</div>
<div class="line"><a name="l00930"></a><span class="lineno"> 930</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;idr_pic_flag) {</div>
<div class="line"><a name="l00931"></a><span class="lineno"> 931</span>&#160; READ_BOOL_OR_RETURN(&amp;shdr-&gt;no_output_of_prior_pics_flag);</div>
<div class="line"><a name="l00932"></a><span class="lineno"> 932</span>&#160; READ_BOOL_OR_RETURN(&amp;shdr-&gt;long_term_reference_flag);</div>
<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00934"></a><span class="lineno"> 934</span>&#160; READ_BOOL_OR_RETURN(&amp;shdr-&gt;adaptive_ref_pic_marking_mode_flag);</div>
<div class="line"><a name="l00935"></a><span class="lineno"> 935</span>&#160;</div>
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>&#160; H264DecRefPicMarking* marking;</div>
<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;adaptive_ref_pic_marking_mode_flag) {</div>
<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>&#160; <span class="keywordtype">size_t</span> i;</div>
<div class="line"><a name="l00939"></a><span class="lineno"> 939</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; arraysize(shdr-&gt;ref_pic_marking); ++i) {</div>
<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>&#160; marking = &amp;shdr-&gt;ref_pic_marking[i];</div>
<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>&#160;</div>
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>&#160; READ_UE_OR_RETURN(&amp;marking-&gt;memory_mgmnt_control_operation);</div>
<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>&#160; <span class="keywordflow">if</span> (marking-&gt;memory_mgmnt_control_operation == 0)</div>
<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00945"></a><span class="lineno"> 945</span>&#160;</div>
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>&#160; <span class="keywordflow">if</span> (marking-&gt;memory_mgmnt_control_operation == 1 ||</div>
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>&#160; marking-&gt;memory_mgmnt_control_operation == 3)</div>
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>&#160; READ_UE_OR_RETURN(&amp;marking-&gt;difference_of_pic_nums_minus1);</div>
<div class="line"><a name="l00949"></a><span class="lineno"> 949</span>&#160;</div>
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span>&#160; <span class="keywordflow">if</span> (marking-&gt;memory_mgmnt_control_operation == 2)</div>
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span>&#160; READ_UE_OR_RETURN(&amp;marking-&gt;long_term_pic_num);</div>
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span>&#160;</div>
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>&#160; <span class="keywordflow">if</span> (marking-&gt;memory_mgmnt_control_operation == 3 ||</div>
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>&#160; marking-&gt;memory_mgmnt_control_operation == 6)</div>
<div class="line"><a name="l00955"></a><span class="lineno"> 955</span>&#160; READ_UE_OR_RETURN(&amp;marking-&gt;long_term_frame_idx);</div>
<div class="line"><a name="l00956"></a><span class="lineno"> 956</span>&#160;</div>
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>&#160; <span class="keywordflow">if</span> (marking-&gt;memory_mgmnt_control_operation == 4)</div>
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span>&#160; READ_UE_OR_RETURN(&amp;marking-&gt;max_long_term_frame_idx_plus1);</div>
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>&#160;</div>
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span>&#160; <span class="keywordflow">if</span> (marking-&gt;memory_mgmnt_control_operation &gt; 6)</div>
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>&#160; <span class="keywordflow">return</span> kInvalidStream;</div>
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span>&#160; }</div>
<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>&#160;</div>
<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>&#160; <span class="keywordflow">if</span> (i == arraysize(shdr-&gt;ref_pic_marking)) {</div>
<div class="line"><a name="l00965"></a><span class="lineno"> 965</span>&#160; DVLOG(1) &lt;&lt; <span class="stringliteral">&quot;Ran out of dec ref pic marking fields&quot;</span>;</div>
<div class="line"><a name="l00966"></a><span class="lineno"> 966</span>&#160; <span class="keywordflow">return</span> kUnsupportedStream;</div>
<div class="line"><a name="l00967"></a><span class="lineno"> 967</span>&#160; }</div>
<div class="line"><a name="l00968"></a><span class="lineno"> 968</span>&#160; }</div>
<div class="line"><a name="l00969"></a><span class="lineno"> 969</span>&#160; }</div>
<div class="line"><a name="l00970"></a><span class="lineno"> 970</span>&#160;</div>
<div class="line"><a name="l00971"></a><span class="lineno"> 971</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l00972"></a><span class="lineno"> 972</span>&#160;}</div>
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>&#160;</div>
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span>&#160;H264Parser::Result H264Parser::ParseSliceHeader(<span class="keyword">const</span> Nalu&amp; nalu,</div>
<div class="line"><a name="l00975"></a><span class="lineno"> 975</span>&#160; H264SliceHeader* shdr) {</div>
<div class="line"><a name="l00976"></a><span class="lineno"> 976</span>&#160; <span class="comment">// See 7.4.3.</span></div>
<div class="line"><a name="l00977"></a><span class="lineno"> 977</span>&#160; <span class="keyword">const</span> H264Sps* sps;</div>
<div class="line"><a name="l00978"></a><span class="lineno"> 978</span>&#160; <span class="keyword">const</span> H264Pps* pps;</div>
<div class="line"><a name="l00979"></a><span class="lineno"> 979</span>&#160; Result res;</div>
<div class="line"><a name="l00980"></a><span class="lineno"> 980</span>&#160; H26xBitReader reader;</div>
<div class="line"><a name="l00981"></a><span class="lineno"> 981</span>&#160; reader.Initialize(nalu.data() + nalu.header_size(), nalu.payload_size());</div>
<div class="line"><a name="l00982"></a><span class="lineno"> 982</span>&#160; H26xBitReader* br = &amp;reader;</div>
<div class="line"><a name="l00983"></a><span class="lineno"> 983</span>&#160;</div>
<div class="line"><a name="l00984"></a><span class="lineno"> 984</span>&#160; memset(shdr, 0, <span class="keyword">sizeof</span>(*shdr));</div>
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span>&#160;</div>
<div class="line"><a name="l00986"></a><span class="lineno"> 986</span>&#160; shdr-&gt;idr_pic_flag = (nalu.type() == 5);</div>
<div class="line"><a name="l00987"></a><span class="lineno"> 987</span>&#160; shdr-&gt;nal_ref_idc = nalu.ref_idc();</div>
<div class="line"><a name="l00988"></a><span class="lineno"> 988</span>&#160; shdr-&gt;nalu_data = nalu.data();</div>
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span>&#160; shdr-&gt;nalu_size = nalu.header_size() + nalu.payload_size();</div>
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span>&#160;</div>
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span>&#160; READ_UE_OR_RETURN(&amp;shdr-&gt;first_mb_in_slice);</div>
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>&#160; READ_UE_OR_RETURN(&amp;shdr-&gt;slice_type);</div>
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>&#160; TRUE_OR_RETURN(shdr-&gt;slice_type &lt; 10);</div>
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>&#160;</div>
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>&#160; READ_UE_OR_RETURN(&amp;shdr-&gt;pic_parameter_set_id);</div>
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>&#160;</div>
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span>&#160; pps = GetPps(shdr-&gt;pic_parameter_set_id);</div>
<div class="line"><a name="l00998"></a><span class="lineno"> 998</span>&#160; TRUE_OR_RETURN(pps);</div>
<div class="line"><a name="l00999"></a><span class="lineno"> 999</span>&#160;</div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>&#160; sps = GetSps(pps-&gt;seq_parameter_set_id);</div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>&#160; TRUE_OR_RETURN(sps);</div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>&#160;</div>
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>&#160; <span class="keywordflow">if</span> (sps-&gt;separate_colour_plane_flag) {</div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>&#160; DVLOG(1) &lt;&lt; <span class="stringliteral">&quot;Interlaced streams not supported&quot;</span>;</div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>&#160; <span class="keywordflow">return</span> kUnsupportedStream;</div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>&#160; }</div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>&#160;</div>
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>&#160; READ_BITS_OR_RETURN(sps-&gt;log2_max_frame_num_minus4 + 4, &amp;shdr-&gt;frame_num);</div>
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>&#160; <span class="keywordflow">if</span> (!sps-&gt;frame_mbs_only_flag) {</div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>&#160; READ_BOOL_OR_RETURN(&amp;shdr-&gt;field_pic_flag);</div>
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;field_pic_flag) {</div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>&#160; DVLOG(1) &lt;&lt; <span class="stringliteral">&quot;Interlaced streams not supported&quot;</span>;</div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>&#160; <span class="keywordflow">return</span> kUnsupportedStream;</div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>&#160; }</div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>&#160; }</div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>&#160;</div>
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;idr_pic_flag)</div>
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>&#160; READ_UE_OR_RETURN(&amp;shdr-&gt;idr_pic_id);</div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>&#160;</div>
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>&#160; <span class="keywordflow">if</span> (sps-&gt;pic_order_cnt_type == 0) {</div>
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>&#160; READ_BITS_OR_RETURN(sps-&gt;log2_max_pic_order_cnt_lsb_minus4 + 4,</div>
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>&#160; &amp;shdr-&gt;pic_order_cnt_lsb);</div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>&#160; <span class="keywordflow">if</span> (pps-&gt;bottom_field_pic_order_in_frame_present_flag &amp;&amp;</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>&#160; !shdr-&gt;field_pic_flag)</div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>&#160; READ_SE_OR_RETURN(&amp;shdr-&gt;delta_pic_order_cnt_bottom);</div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>&#160; }</div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>&#160;</div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>&#160; <span class="keywordflow">if</span> (sps-&gt;pic_order_cnt_type == 1 &amp;&amp; !sps-&gt;delta_pic_order_always_zero_flag) {</div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>&#160; READ_SE_OR_RETURN(&amp;shdr-&gt;delta_pic_order_cnt[0]);</div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>&#160; <span class="keywordflow">if</span> (pps-&gt;bottom_field_pic_order_in_frame_present_flag &amp;&amp;</div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>&#160; !shdr-&gt;field_pic_flag)</div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>&#160; READ_SE_OR_RETURN(&amp;shdr-&gt;delta_pic_order_cnt[1]);</div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>&#160; }</div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>&#160;</div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>&#160; <span class="keywordflow">if</span> (pps-&gt;redundant_pic_cnt_present_flag) {</div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>&#160; READ_UE_OR_RETURN(&amp;shdr-&gt;redundant_pic_cnt);</div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>&#160; TRUE_OR_RETURN(shdr-&gt;redundant_pic_cnt &lt; 128);</div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>&#160; }</div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>&#160;</div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;IsBSlice())</div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>&#160; READ_BOOL_OR_RETURN(&amp;shdr-&gt;direct_spatial_mv_pred_flag);</div>
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>&#160;</div>
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;IsPSlice() || shdr-&gt;IsSPSlice() || shdr-&gt;IsBSlice()) {</div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>&#160; READ_BOOL_OR_RETURN(&amp;shdr-&gt;num_ref_idx_active_override_flag);</div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;num_ref_idx_active_override_flag) {</div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>&#160; READ_UE_OR_RETURN(&amp;shdr-&gt;num_ref_idx_l0_active_minus1);</div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;IsBSlice())</div>
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>&#160; READ_UE_OR_RETURN(&amp;shdr-&gt;num_ref_idx_l1_active_minus1);</div>
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>&#160; shdr-&gt;num_ref_idx_l0_active_minus1 =</div>
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>&#160; pps-&gt;num_ref_idx_l0_default_active_minus1;</div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;IsBSlice()) {</div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>&#160; shdr-&gt;num_ref_idx_l1_active_minus1 =</div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>&#160; pps-&gt;num_ref_idx_l1_default_active_minus1;</div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>&#160; }</div>
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>&#160; }</div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>&#160; }</div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;field_pic_flag) {</div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>&#160; TRUE_OR_RETURN(shdr-&gt;num_ref_idx_l0_active_minus1 &lt; 32);</div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>&#160; TRUE_OR_RETURN(shdr-&gt;num_ref_idx_l1_active_minus1 &lt; 32);</div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>&#160; TRUE_OR_RETURN(shdr-&gt;num_ref_idx_l0_active_minus1 &lt; 16);</div>
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>&#160; TRUE_OR_RETURN(shdr-&gt;num_ref_idx_l1_active_minus1 &lt; 16);</div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>&#160; }</div>
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>&#160;</div>
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>&#160; <span class="keywordflow">if</span> (nalu.type() == Nalu::H264_CodedSliceExtension) {</div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>&#160; <span class="keywordflow">return</span> kUnsupportedStream;</div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>&#160; res = ParseRefPicListModifications(br, shdr);</div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>&#160; }</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>&#160;</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>&#160; <span class="keywordflow">if</span> ((pps-&gt;weighted_pred_flag &amp;&amp; (shdr-&gt;IsPSlice() || shdr-&gt;IsSPSlice())) ||</div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>&#160; (pps-&gt;weighted_bipred_idc == 1 &amp;&amp; shdr-&gt;IsBSlice())) {</div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>&#160; res = ParsePredWeightTable(br, *sps, shdr);</div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>&#160; }</div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>&#160;</div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>&#160; <span class="keywordflow">if</span> (nalu.ref_idc() != 0) {</div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>&#160; res = ParseDecRefPicMarking(br, shdr);</div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>&#160; <span class="keywordflow">if</span> (res != kOk)</div>
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>&#160; <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>&#160; }</div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>&#160;</div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>&#160; <span class="keywordflow">if</span> (pps-&gt;entropy_coding_mode_flag &amp;&amp; !shdr-&gt;IsISlice() &amp;&amp;</div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>&#160; !shdr-&gt;IsSISlice()) {</div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>&#160; READ_UE_OR_RETURN(&amp;shdr-&gt;cabac_init_idc);</div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>&#160; TRUE_OR_RETURN(shdr-&gt;cabac_init_idc &lt; 3);</div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>&#160; }</div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>&#160;</div>
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>&#160; READ_SE_OR_RETURN(&amp;shdr-&gt;slice_qp_delta);</div>
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>&#160;</div>
<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;IsSPSlice() || shdr-&gt;IsSISlice()) {</div>
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;IsSPSlice())</div>
<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>&#160; READ_BOOL_OR_RETURN(&amp;shdr-&gt;sp_for_switch_flag);</div>
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>&#160; READ_SE_OR_RETURN(&amp;shdr-&gt;slice_qs_delta);</div>
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>&#160; }</div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>&#160;</div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>&#160; <span class="keywordflow">if</span> (pps-&gt;deblocking_filter_control_present_flag) {</div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>&#160; READ_UE_OR_RETURN(&amp;shdr-&gt;disable_deblocking_filter_idc);</div>
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>&#160; TRUE_OR_RETURN(shdr-&gt;disable_deblocking_filter_idc &lt; 3);</div>
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>&#160;</div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>&#160; <span class="keywordflow">if</span> (shdr-&gt;disable_deblocking_filter_idc != 1) {</div>
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>&#160; READ_SE_OR_RETURN(&amp;shdr-&gt;slice_alpha_c0_offset_div2);</div>
<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>&#160; IN_RANGE_OR_RETURN(shdr-&gt;slice_alpha_c0_offset_div2, -6, 6);</div>
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>&#160;</div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>&#160; READ_SE_OR_RETURN(&amp;shdr-&gt;slice_beta_offset_div2);</div>
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>&#160; IN_RANGE_OR_RETURN(shdr-&gt;slice_beta_offset_div2, -6, 6);</div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>&#160; }</div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>&#160; }</div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>&#160;</div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>&#160; <span class="keywordflow">if</span> (pps-&gt;num_slice_groups_minus1 &gt; 0) {</div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>&#160; DVLOG(1) &lt;&lt; <span class="stringliteral">&quot;Slice groups not supported&quot;</span>;</div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>&#160; <span class="keywordflow">return</span> kUnsupportedStream;</div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>&#160; }</div>
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>&#160;</div>
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>&#160; shdr-&gt;header_bit_size = nalu.payload_size() * 8 - br-&gt;NumBitsLeft();</div>
<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>&#160;}</div>
<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>&#160;</div>
<div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>&#160;H264Parser::Result H264Parser::ParseSEI(<span class="keyword">const</span> Nalu&amp; nalu,</div>
<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>&#160; H264SEIMessage* sei_msg) {</div>
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>&#160; <span class="keywordtype">int</span> byte;</div>
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>&#160; H26xBitReader reader;</div>
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>&#160; reader.Initialize(nalu.data() + nalu.header_size(), nalu.payload_size());</div>
<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>&#160; H26xBitReader* br = &amp;reader;</div>
<div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>&#160;</div>
<div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>&#160; memset(sei_msg, 0, <span class="keyword">sizeof</span>(*sei_msg));</div>
<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>&#160;</div>
<div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>&#160; READ_BITS_OR_RETURN(8, &amp;byte);</div>
<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>&#160; <span class="keywordflow">while</span> (byte == 0xff) {</div>
<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>&#160; sei_msg-&gt;type += 255;</div>
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>&#160; READ_BITS_OR_RETURN(8, &amp;byte);</div>
<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>&#160; }</div>
<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>&#160; sei_msg-&gt;type += byte;</div>
<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>&#160;</div>
<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>&#160; READ_BITS_OR_RETURN(8, &amp;byte);</div>
<div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>&#160; <span class="keywordflow">while</span> (byte == 0xff) {</div>
<div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>&#160; sei_msg-&gt;payload_size += 255;</div>
<div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>&#160; READ_BITS_OR_RETURN(8, &amp;byte);</div>
<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>&#160; }</div>
<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>&#160; sei_msg-&gt;payload_size += byte;</div>
<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>&#160;</div>
<div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>&#160; DVLOG(4) &lt;&lt; <span class="stringliteral">&quot;Found SEI message type: &quot;</span> &lt;&lt; sei_msg-&gt;type</div>
<div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>&#160; &lt;&lt; <span class="stringliteral">&quot; payload size: &quot;</span> &lt;&lt; sei_msg-&gt;payload_size;</div>
<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>&#160;</div>
<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>&#160; <span class="keywordflow">switch</span> (sei_msg-&gt;type) {</div>
<div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>&#160; <span class="keywordflow">case</span> H264SEIMessage::kSEIRecoveryPoint:</div>
<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>&#160; READ_UE_OR_RETURN(&amp;sei_msg-&gt;recovery_point.recovery_frame_cnt);</div>
<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>&#160; READ_BOOL_OR_RETURN(&amp;sei_msg-&gt;recovery_point.exact_match_flag);</div>
<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>&#160; READ_BOOL_OR_RETURN(&amp;sei_msg-&gt;recovery_point.broken_link_flag);</div>
<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>&#160; READ_BITS_OR_RETURN(2, &amp;sei_msg-&gt;recovery_point.changing_slice_group_idc);</div>
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>&#160;</div>
<div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>&#160; DVLOG(4) &lt;&lt; <span class="stringliteral">&quot;Unsupported SEI message&quot;</span>;</div>
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>&#160; }</div>
<div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>&#160;</div>
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>&#160; <span class="keywordflow">return</span> kOk;</div>
<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>&#160;}</div>
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>&#160;</div>
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>&#160;} <span class="comment">// namespace shaka</span></div>
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