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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/formats/mp2t/ts_section_pes.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 &quot;packager/base/logging.h&quot;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#include &quot;packager/base/strings/string_number_conversions.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/bit_reader.h&quot;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/timestamp.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &quot;packager/media/formats/mp2t/es_parser.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;packager/media/formats/mp2t/mp2t_common.h&quot;</span></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="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kPesStartCode = 0x000001;</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160; </div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment">// Given that |time| is coded using 33 bits,</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment">// UnrollTimestamp returns the corresponding unrolled timestamp.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment">// The unrolled timestamp is defined by:</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment">// |time| + k * (2 ^ 33)</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment">// where k is estimated so that the unrolled timestamp</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment">// is as close as possible to |previous_unrolled_time|.</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="keyword">static</span> int64_t UnrollTimestamp(int64_t previous_unrolled_time, int64_t time) {</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; <span class="comment">// Mpeg2 TS timestamps have an accuracy of 33 bits.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> nbits = 33;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; <span class="comment">// |timestamp| has a precision of |nbits|</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; <span class="comment">// so make sure the highest bits are set to 0.</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; DCHECK_EQ((time &gt;&gt; nbits), 0);</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; <span class="comment">// Consider 3 possibilities to estimate the missing high bits of |time|.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; int64_t previous_unrolled_time_high = (previous_unrolled_time &gt;&gt; nbits);</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; int64_t time0 = ((previous_unrolled_time_high - 1) &lt;&lt; nbits) | time;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; int64_t time1 = ((previous_unrolled_time_high + 0) &lt;&lt; nbits) | time;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; int64_t time2 = ((previous_unrolled_time_high + 1) &lt;&lt; nbits) | time;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; <span class="comment">// Select the min absolute difference with the current time</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="comment">// so as to ensure time continuity.</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; int64_t diff0 = time0 - previous_unrolled_time;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; int64_t diff1 = time1 - previous_unrolled_time;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; int64_t diff2 = time2 - previous_unrolled_time;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keywordflow">if</span> (diff0 &lt; 0)</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; diff0 = -diff0;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keywordflow">if</span> (diff1 &lt; 0)</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; diff1 = -diff1;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keywordflow">if</span> (diff2 &lt; 0)</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; diff2 = -diff2;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; int64_t unrolled_time;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; int64_t min_diff;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keywordflow">if</span> (diff1 &lt; diff0) {</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; unrolled_time = time1;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; min_diff = diff1;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; unrolled_time = time0;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; min_diff = diff0;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; }</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordflow">if</span> (diff2 &lt; min_diff)</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; unrolled_time = time2;</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="keywordflow">return</span> unrolled_time;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;}</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="keyword">static</span> <span class="keywordtype">bool</span> IsTimestampSectionValid(int64_t timestamp_section) {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="comment">// |pts_section| has 40 bits:</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="comment">// - starting with either &#39;0010&#39; or &#39;0011&#39; or &#39;0001&#39;</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="comment">// - and ending with a marker bit.</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="comment">// See ITU H.222 standard - PES section.</span></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">// Verify that all the marker bits are set to one.</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keywordflow">return</span> ((timestamp_section &amp; 0x1) != 0) &amp;&amp;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; ((timestamp_section &amp; 0x10000) != 0) &amp;&amp;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; ((timestamp_section &amp; 0x100000000LL) != 0);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;}</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="keyword">static</span> int64_t ConvertTimestampSectionToTimestamp(int64_t timestamp_section) {</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordflow">return</span> (((timestamp_section &gt;&gt; 33) &amp; 0x7) &lt;&lt; 30) |</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; (((timestamp_section &gt;&gt; 17) &amp; 0x7fff) &lt;&lt; 15) |</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; (((timestamp_section &gt;&gt; 1) &amp; 0x7fff) &lt;&lt; 0);</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;}</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="keyword">namespace </span><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="keyword">namespace </span>media {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="keyword">namespace </span>mp2t {</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; </div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;TsSectionPes::TsSectionPes(std::unique_ptr&lt;EsParser&gt; es_parser)</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; : es_parser_(es_parser.release()),</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; wait_for_pusi_(true),</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; previous_pts_valid_(false),</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; previous_pts_(0),</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; previous_dts_valid_(false),</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; previous_dts_(0) {</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; DCHECK(es_parser_);</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;TsSectionPes::~TsSectionPes() {</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;}</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;<span class="keywordtype">bool</span> TsSectionPes::Parse(<span class="keywordtype">bool</span> payload_unit_start_indicator,</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keyword">const</span> uint8_t* buf,</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordtype">int</span> size) {</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="comment">// Ignore partial PES.</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordflow">if</span> (wait_for_pusi_ &amp;&amp; !payload_unit_start_indicator)</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="keywordtype">bool</span> parse_result = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keywordflow">if</span> (payload_unit_start_indicator) {</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="comment">// Try emitting a packet since we might have a pending PES packet</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <span class="comment">// with an undefined size.</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="comment">// In this case, a unit is emitted when the next unit is coming.</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keywordtype">int</span> raw_pes_size;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="keyword">const</span> uint8_t* raw_pes;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; pes_byte_queue_.<a class="code" href="../../d7/dda/classshaka_1_1media_1_1ByteQueue.html#a8565a6999f73f210ad2ac2e2ee5ada0e">Peek</a>(&amp;raw_pes, &amp;raw_pes_size);</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="keywordflow">if</span> (raw_pes_size &gt; 0)</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; parse_result = Emit(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; </div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="comment">// Reset the state.</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; ResetPesState();</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; </div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="comment">// Update the state.</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; wait_for_pusi_ = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <span class="comment">// Add the data to the parser state.</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="keywordflow">if</span> (size &gt; 0)</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; pes_byte_queue_.<a class="code" href="../../d7/dda/classshaka_1_1media_1_1ByteQueue.html#acea792e406efe5119cec2e3e522e02c2">Push</a>(buf, size);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="comment">// Try emitting the current PES packet.</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <span class="keywordflow">return</span> (parse_result &amp;&amp; Emit(<span class="keyword">false</span>));</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;}</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; </div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="keywordtype">bool</span> TsSectionPes::Flush() {</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; <span class="comment">// Try emitting a packet since we might have a pending PES packet</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <span class="comment">// with an undefined size.</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; RCHECK(Emit(<span class="keyword">true</span>));</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; </div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <span class="comment">// Flush the underlying ES parser.</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; <span class="keywordflow">return</span> es_parser_-&gt;Flush();</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;}</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;<span class="keywordtype">void</span> TsSectionPes::Reset() {</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; ResetPesState();</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; </div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; previous_pts_valid_ = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; previous_pts_ = 0;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; previous_dts_valid_ = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; previous_dts_ = 0;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; es_parser_-&gt;Reset();</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;}</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; </div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="keywordtype">bool</span> TsSectionPes::Emit(<span class="keywordtype">bool</span> emit_for_unknown_size) {</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; <span class="keywordtype">int</span> raw_pes_size;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keyword">const</span> uint8_t* raw_pes;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; pes_byte_queue_.<a class="code" href="../../d7/dda/classshaka_1_1media_1_1ByteQueue.html#a8565a6999f73f210ad2ac2e2ee5ada0e">Peek</a>(&amp;raw_pes, &amp;raw_pes_size);</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; </div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; <span class="comment">// A PES should be at least 6 bytes.</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; <span class="comment">// Wait for more data to come if not enough bytes.</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keywordflow">if</span> (raw_pes_size &lt; 6)</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; <span class="comment">// Check whether we have enough data to start parsing.</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; <span class="keywordtype">int</span> pes_packet_length =</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; (<span class="keyword">static_cast&lt;</span><span class="keywordtype">int</span><span class="keyword">&gt;</span>(raw_pes[4]) &lt;&lt; 8) |</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; (<span class="keyword">static_cast&lt;</span><span class="keywordtype">int</span><span class="keyword">&gt;</span>(raw_pes[5]));</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; <span class="keywordflow">if</span> ((pes_packet_length == 0 &amp;&amp; !emit_for_unknown_size) ||</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; (pes_packet_length != 0 &amp;&amp; raw_pes_size &lt; pes_packet_length + 6)) {</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; <span class="comment">// Wait for more data to come either because:</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; <span class="comment">// - there are not enough bytes,</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; <span class="comment">// - or the PES size is unknown and the &quot;force emit&quot; flag is not set.</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; <span class="comment">// (PES size might be unknown for video PES packet).</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</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; DVLOG(LOG_LEVEL_PES) &lt;&lt; <span class="stringliteral">&quot;pes_packet_length=&quot;</span> &lt;&lt; pes_packet_length;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; </div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; <span class="comment">// Parse the packet.</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <span class="keywordtype">bool</span> parse_result = ParseInternal(raw_pes, raw_pes_size);</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="comment">// Reset the state.</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; ResetPesState();</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; <span class="keywordflow">return</span> parse_result;</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;}</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;<span class="keywordtype">bool</span> TsSectionPes::ParseInternal(<span class="keyword">const</span> uint8_t* raw_pes, <span class="keywordtype">int</span> raw_pes_size) {</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; BitReader bit_reader(raw_pes, raw_pes_size);</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; <span class="comment">// Read up to the pes_packet_length (6 bytes).</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; <span class="keywordtype">int</span> packet_start_code_prefix;</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; <span class="keywordtype">int</span> stream_id;</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; <span class="keywordtype">int</span> pes_packet_length;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; RCHECK(bit_reader.ReadBits(24, &amp;packet_start_code_prefix));</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; RCHECK(bit_reader.ReadBits(8, &amp;stream_id));</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; RCHECK(bit_reader.ReadBits(16, &amp;pes_packet_length));</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; RCHECK(packet_start_code_prefix == kPesStartCode);</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; DVLOG(LOG_LEVEL_PES) &lt;&lt; <span class="stringliteral">&quot;stream_id=&quot;</span> &lt;&lt; std::hex &lt;&lt; stream_id &lt;&lt; std::dec;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; <span class="keywordflow">if</span> (pes_packet_length == 0)</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; pes_packet_length = <span class="keyword">static_cast&lt;</span><span class="keywordtype">int</span><span class="keyword">&gt;</span>(bit_reader.bits_available()) / 8;</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="comment">// Ignore the PES for unknown stream IDs.</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; <span class="comment">// ATSC Standard A/52:2012 3. GENERIC IDENTIFICATION OF AN AC-3 STREAM.</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; <span class="comment">// AC3/E-AC3 stream uses private stream id.</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> kPrivateStream1 = 0xBD;</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; <span class="comment">// See ITU H.222 Table 2-22 &quot;Stream_id assignments&quot;</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; <span class="keywordtype">bool</span> is_audio_stream_id =</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; ((stream_id &amp; 0xe0) == 0xc0) || stream_id == kPrivateStream1;</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; <span class="keywordtype">bool</span> is_video_stream_id = ((stream_id &amp; 0xf0) == 0xe0);</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; <span class="keywordflow">if</span> (!is_audio_stream_id &amp;&amp; !is_video_stream_id)</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; </div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; <span class="comment">// Read up to &quot;pes_header_data_length&quot;.</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; <span class="keywordtype">int</span> dummy_2;</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; <span class="keywordtype">int</span> PES_scrambling_control;</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; <span class="keywordtype">int</span> PES_priority;</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; <span class="keywordtype">int</span> data_alignment_indicator;</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; <span class="keywordtype">int</span> copyright;</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="keywordtype">int</span> original_or_copy;</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; <span class="keywordtype">int</span> pts_dts_flags;</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; <span class="keywordtype">int</span> escr_flag;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; <span class="keywordtype">int</span> es_rate_flag;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; <span class="keywordtype">int</span> dsm_trick_mode_flag;</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; <span class="keywordtype">int</span> additional_copy_info_flag;</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; <span class="keywordtype">int</span> pes_crc_flag;</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; <span class="keywordtype">int</span> pes_extension_flag;</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; <span class="keywordtype">int</span> pes_header_data_length;</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160; RCHECK(bit_reader.ReadBits(2, &amp;dummy_2));</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; RCHECK(dummy_2 == 0x2);</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; RCHECK(bit_reader.ReadBits(2, &amp;PES_scrambling_control));</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; RCHECK(bit_reader.ReadBits(1, &amp;PES_priority));</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; RCHECK(bit_reader.ReadBits(1, &amp;data_alignment_indicator));</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; RCHECK(bit_reader.ReadBits(1, &amp;copyright));</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; RCHECK(bit_reader.ReadBits(1, &amp;original_or_copy));</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; RCHECK(bit_reader.ReadBits(2, &amp;pts_dts_flags));</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160; RCHECK(bit_reader.ReadBits(1, &amp;escr_flag));</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; RCHECK(bit_reader.ReadBits(1, &amp;es_rate_flag));</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; RCHECK(bit_reader.ReadBits(1, &amp;dsm_trick_mode_flag));</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; RCHECK(bit_reader.ReadBits(1, &amp;additional_copy_info_flag));</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; RCHECK(bit_reader.ReadBits(1, &amp;pes_crc_flag));</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; RCHECK(bit_reader.ReadBits(1, &amp;pes_extension_flag));</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; RCHECK(bit_reader.ReadBits(8, &amp;pes_header_data_length));</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; <span class="keywordtype">int</span> pes_header_start_size = <span class="keyword">static_cast&lt;</span><span class="keywordtype">int</span><span class="keyword">&gt;</span>(bit_reader.bits_available()) / 8;</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; </div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; <span class="comment">// Compute the size and the offset of the ES payload.</span></div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; <span class="comment">// &quot;6&quot; for the 6 bytes read before and including |pes_packet_length|.</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; <span class="comment">// &quot;3&quot; for the 3 bytes read before and including |pes_header_data_length|.</span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160; <span class="keywordtype">int</span> es_size = pes_packet_length - 3 - pes_header_data_length;</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; <span class="keywordtype">int</span> es_offset = 6 + 3 + pes_header_data_length;</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; RCHECK(es_size &gt;= 0);</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; RCHECK(es_offset + es_size &lt;= raw_pes_size);</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="comment">// Read the timing information section.</span></div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; <span class="keywordtype">bool</span> is_pts_valid = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; <span class="keywordtype">bool</span> is_dts_valid = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160; int64_t pts_section = 0;</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160; int64_t dts_section = 0;</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; <span class="keywordflow">if</span> (pts_dts_flags == 0x2) {</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; RCHECK(bit_reader.ReadBits(40, &amp;pts_section));</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160; RCHECK((((pts_section &gt;&gt; 36) &amp; 0xf) == 0x2) &amp;&amp;</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160; IsTimestampSectionValid(pts_section));</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; is_pts_valid = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; }</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160; <span class="keywordflow">if</span> (pts_dts_flags == 0x3) {</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; RCHECK(bit_reader.ReadBits(40, &amp;pts_section));</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160; RCHECK(bit_reader.ReadBits(40, &amp;dts_section));</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; RCHECK((((pts_section &gt;&gt; 36) &amp; 0xf) == 0x3) &amp;&amp;</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; IsTimestampSectionValid(pts_section));</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; RCHECK((((dts_section &gt;&gt; 36) &amp; 0xf) == 0x1) &amp;&amp;</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; IsTimestampSectionValid(dts_section));</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; is_pts_valid = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; is_dts_valid = <span class="keyword">true</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; </div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; <span class="comment">// Convert and unroll the timestamps.</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; int64_t media_pts(kNoTimestamp);</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; int64_t media_dts(kNoTimestamp);</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; <span class="keywordflow">if</span> (is_pts_valid) {</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160; int64_t pts = ConvertTimestampSectionToTimestamp(pts_section);</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; <span class="keywordflow">if</span> (previous_pts_valid_)</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160; pts = UnrollTimestamp(previous_pts_, pts);</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160; previous_pts_ = pts;</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160; previous_pts_valid_ = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; media_pts = pts;</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; }</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; <span class="keywordflow">if</span> (is_dts_valid) {</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160; int64_t dts = ConvertTimestampSectionToTimestamp(dts_section);</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; <span class="keywordflow">if</span> (previous_dts_valid_)</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160; dts = UnrollTimestamp(previous_dts_, dts);</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; previous_dts_ = dts;</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160; previous_dts_valid_ = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160; media_dts = dts;</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; </div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160; <span class="comment">// Discard the rest of the PES packet header.</span></div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; DCHECK_EQ(bit_reader.bits_available() % 8, 0u);</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160; <span class="keywordtype">int</span> pes_header_remaining_size =</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160; pes_header_data_length -</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160; (pes_header_start_size -</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; <span class="keyword">static_cast&lt;</span><span class="keywordtype">int</span><span class="keyword">&gt;</span>(bit_reader.bits_available()) / 8);</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160; RCHECK(pes_header_remaining_size &gt;= 0);</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="comment">// Read the PES packet.</span></div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160; DVLOG(LOG_LEVEL_PES)</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160; &lt;&lt; <span class="stringliteral">&quot;Emit a reassembled PES:&quot;</span></div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160; &lt;&lt; <span class="stringliteral">&quot; size=&quot;</span> &lt;&lt; es_size</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160; &lt;&lt; <span class="stringliteral">&quot; pts=&quot;</span> &lt;&lt; media_pts</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160; &lt;&lt; <span class="stringliteral">&quot; dts=&quot;</span> &lt;&lt; media_dts</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160; &lt;&lt; <span class="stringliteral">&quot; data_alignment_indicator=&quot;</span> &lt;&lt; data_alignment_indicator;</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160; <span class="keywordflow">return</span> es_parser_-&gt;Parse(&amp;raw_pes[es_offset], es_size, media_pts, media_dts);</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160;}</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160; </div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160;<span class="keywordtype">void</span> TsSectionPes::ResetPesState() {</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160; pes_byte_queue_.<a class="code" href="../../d7/dda/classshaka_1_1media_1_1ByteQueue.html#ab1659ef71098c37e9fb4e55ab1664e84">Reset</a>();</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; wait_for_pusi_ = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160;}</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160; </div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160;} <span class="comment">// namespace mp2t</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160;} <span class="comment">// namespace shaka</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="aclassshaka_1_1media_1_1ByteQueue_html_a8565a6999f73f210ad2ac2e2ee5ada0e"><div class="ttname"><a href="../../d7/dda/classshaka_1_1media_1_1ByteQueue.html#a8565a6999f73f210ad2ac2e2ee5ada0e">shaka::media::ByteQueue::Peek</a></div><div class="ttdeci">void Peek(const uint8_t **data, int *size) const</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/df9/byte__queue_8cc_source.html#l00062">byte_queue.cc:62</a></div></div>
<div class="ttc" id="anamespaceshaka_html"><div class="ttname"><a href="../../d8/daf/namespaceshaka.html">shaka</a></div><div class="ttdoc">All the methods that are virtual are virtual for mocking.</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d15/gflags__hex__bytes_8cc_source.html#l00011">gflags_hex_bytes.cc:11</a></div></div>
<div class="ttc" id="aclassshaka_1_1media_1_1ByteQueue_html_acea792e406efe5119cec2e3e522e02c2"><div class="ttname"><a href="../../d7/dda/classshaka_1_1media_1_1ByteQueue.html#acea792e406efe5119cec2e3e522e02c2">shaka::media::ByteQueue::Push</a></div><div class="ttdeci">void Push(const uint8_t *data, int size)</div><div class="ttdoc">Append new bytes to the end of the queue.</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/df9/byte__queue_8cc_source.html#l00029">byte_queue.cc:29</a></div></div>
<div class="ttc" id="aclassshaka_1_1media_1_1ByteQueue_html_ab1659ef71098c37e9fb4e55ab1664e84"><div class="ttname"><a href="../../d7/dda/classshaka_1_1media_1_1ByteQueue.html#ab1659ef71098c37e9fb4e55ab1664e84">shaka::media::ByteQueue::Reset</a></div><div class="ttdeci">void Reset()</div><div class="ttdoc">Reset the queue to the empty state.</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/df9/byte__queue_8cc_source.html#l00024">byte_queue.cc:24</a></div></div>
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