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<div class="title">mp4_media_parser.cc</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright (c) 2012 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/mp4/mp4_media_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;limits&gt;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &quot;packager/base/callback.h&quot;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &quot;packager/base/callback_helpers.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &quot;packager/base/logging.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;packager/base/memory/ref_counted.h&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &quot;packager/base/strings/string_number_conversions.h&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/audio_stream_info.h&quot;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/buffer_reader.h&quot;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/decrypt_config.h&quot;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/key_source.h&quot;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/macros.h&quot;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/media_sample.h&quot;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/protection_system_specific_info.h&quot;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/video_stream_info.h&quot;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &quot;packager/media/file/file.h&quot;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &quot;packager/media/file/file_closer.h&quot;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &quot;packager/media/filters/avc_decoder_configuration.h&quot;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &quot;packager/media/filters/hevc_decoder_configuration.h&quot;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#include &quot;packager/media/filters/vp_codec_configuration.h&quot;</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#include &quot;packager/media/formats/mp4/box_definitions.h&quot;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="preprocessor">#include &quot;packager/media/formats/mp4/box_reader.h&quot;</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor">#include &quot;packager/media/formats/mp4/es_descriptor.h&quot;</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="preprocessor">#include &quot;packager/media/formats/mp4/rcheck.h&quot;</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="preprocessor">#include &quot;packager/media/formats/mp4/track_run_iterator.h&quot;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keyword">namespace </span>edash_packager {</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="keyword">namespace </span>media {</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="keyword">namespace </span>mp4 {</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;uint64_t Rescale(uint64_t time_in_old_scale,</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; uint32_t old_scale,</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; uint32_t new_scale) {</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keywordflow">return</span> (static_cast&lt;double&gt;(time_in_old_scale) / old_scale) * new_scale;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;}</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;VideoCodec FourCCToVideoCodec(FourCC fourcc) {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keywordflow">switch</span> (fourcc) {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">case</span> FOURCC_AVC1:</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keywordflow">return</span> kCodecH264;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keywordflow">case</span> FOURCC_HEV1:</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keywordflow">return</span> kCodecHEV1;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keywordflow">case</span> FOURCC_HVC1:</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keywordflow">return</span> kCodecHVC1;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordflow">case</span> FOURCC_VP08:</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordflow">return</span> kCodecVP8;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="keywordflow">case</span> FOURCC_VP09:</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keywordflow">return</span> kCodecVP9;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="keywordflow">case</span> FOURCC_VP10:</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordflow">return</span> kCodecVP10;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keywordflow">return</span> kUnknownVideoCodec;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; }</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;AudioCodec FourCCToAudioCodec(FourCC fourcc) {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">switch</span>(fourcc) {</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keywordflow">case</span> FOURCC_DTSC:</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keywordflow">return</span> kCodecDTSC;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keywordflow">case</span> FOURCC_DTSH:</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordflow">return</span> kCodecDTSH;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keywordflow">case</span> FOURCC_DTSL:</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keywordflow">return</span> kCodecDTSL;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keywordflow">case</span> FOURCC_DTSE:</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="keywordflow">return</span> kCodecDTSE;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keywordflow">case</span> FOURCC_DTSP:</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keywordflow">return</span> kCodecDTSP;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <span class="keywordflow">case</span> FOURCC_DTSM:</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordflow">return</span> kCodecDTSM;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keywordflow">case</span> FOURCC_AC3:</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">return</span> kCodecAC3;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keywordflow">case</span> FOURCC_EAC3:</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <span class="keywordflow">return</span> kCodecEAC3;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keywordflow">return</span> kUnknownAudioCodec;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; }</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;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="keyword">const</span> <span class="keywordtype">char</span> kWidevineKeySystemId[] = <span class="stringliteral">&quot;edef8ba979d64acea3c827dcd51d21ed&quot;</span>;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="comment">// Default DTS audio number of channels for 5.1 channel layout.</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="keyword">const</span> uint8_t kDtsAudioNumChannels = 6;</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;} <span class="comment">// namespace</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;MP4MediaParser::MP4MediaParser()</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; : state_(kWaitingForInit),</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; decryption_key_source_(NULL),</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; moof_head_(0),</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; mdat_tail_(0) {}</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;MP4MediaParser::~MP4MediaParser() {}</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;</div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a4ef745c8846adc9e932059a4e91f67c2"> 100</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a4ef745c8846adc9e932059a4e91f67c2">MP4MediaParser::Init</a>(<span class="keyword">const</span> InitCB&amp; init_cb,</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keyword">const</span> NewSampleCB&amp; new_sample_cb,</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html">KeySource</a>* decryption_key_source) {</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; DCHECK_EQ(state_, kWaitingForInit);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; DCHECK(init_cb_.is_null());</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; DCHECK(!init_cb.is_null());</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; DCHECK(!new_sample_cb.is_null());</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; ChangeState(kParsingBoxes);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; init_cb_ = init_cb;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; new_sample_cb_ = new_sample_cb;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; decryption_key_source_ = decryption_key_source;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keywordflow">if</span> (decryption_key_source)</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; decryptor_source_.reset(<span class="keyword">new</span> <a class="code" href="../../dc/df1/classedash__packager_1_1media_1_1DecryptorSource.html">DecryptorSource</a>(decryption_key_source));</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;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;<span class="keywordtype">void</span> MP4MediaParser::Reset() {</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; queue_.Reset();</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; runs_.reset();</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; moof_head_ = 0;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; mdat_tail_ = 0;</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"><a class="line" href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a923b9bdc43e77a0f072c6e637f9af910"> 123</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a923b9bdc43e77a0f072c6e637f9af910">MP4MediaParser::Flush</a>() {</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; DCHECK_NE(state_, kWaitingForInit);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; Reset();</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; ChangeState(kParsingBoxes);</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;}</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"><a class="line" href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a2228fd06a2237990b0f9208565f31520"> 130</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a2228fd06a2237990b0f9208565f31520">MP4MediaParser::Parse</a>(<span class="keyword">const</span> uint8_t* buf, <span class="keywordtype">int</span> size) {</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; DCHECK_NE(state_, kWaitingForInit);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <span class="keywordflow">if</span> (state_ == kError)</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</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; queue_.Push(buf, size);</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="keywordtype">bool</span> result, err = <span class="keyword">false</span>;</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="keywordflow">do</span> {</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; <span class="keywordflow">if</span> (state_ == kParsingBoxes) {</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; result = ParseBox(&amp;err);</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; DCHECK_EQ(kEmittingSamples, state_);</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; result = EnqueueSample(&amp;err);</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="keywordflow">if</span> (result) {</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; int64_t max_clear = runs_-&gt;GetMaxClearOffset() + moof_head_;</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; err = !ReadAndDiscardMDATsUntil(max_clear);</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="keywordflow">while</span> (result &amp;&amp; !err);</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keywordflow">if</span> (err) {</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; DLOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Error while parsing MP4&quot;</span>;</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; moov_.reset();</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; Reset();</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; ChangeState(kError);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; }</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="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;}</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;</div>
<div class="line"><a name="l00164"></a><span class="lineno"><a class="line" href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a6dafe794d755100428ed427791ae0e43"> 164</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a6dafe794d755100428ed427791ae0e43">MP4MediaParser::LoadMoov</a>(<span class="keyword">const</span> std::string&amp; file_path) {</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; scoped_ptr&lt;File, FileCloser&gt; file(</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; <a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html#a47194a7cd303640c2a8b689d18ef9701">File::OpenWithNoBuffering</a>(file_path.c_str(), <span class="stringliteral">&quot;r&quot;</span>));</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; <span class="keywordflow">if</span> (!file) {</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Unable to open media file &#39;&quot;</span> &lt;&lt; file_path &lt;&lt; <span class="stringliteral">&quot;&#39;&quot;</span>;</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <span class="keywordflow">if</span> (!file-&gt;Seek(0)) {</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; LOG(WARNING) &lt;&lt; <span class="stringliteral">&quot;Filesystem does not support seeking on file &#39;&quot;</span> &lt;&lt; file_path</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; &lt;&lt; <span class="stringliteral">&quot;&#39;&quot;</span>;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; }</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160;</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; uint64_t file_position(0);</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; <span class="keywordtype">bool</span> mdat_seen(<span class="keyword">false</span>);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <span class="keyword">const</span> uint32_t kBoxHeaderReadSize(16);</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; std::vector&lt;uint8_t&gt; buffer(kBoxHeaderReadSize);</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; int64_t bytes_read = file-&gt;Read(&amp;buffer[0], kBoxHeaderReadSize);</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; <span class="keywordflow">if</span> (bytes_read == 0) {</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Could not find &#39;moov&#39; box in file &#39;&quot;</span> &lt;&lt; file_path &lt;&lt; <span class="stringliteral">&quot;&#39;&quot;</span>;</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</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="keywordflow">if</span> (bytes_read &lt; kBoxHeaderReadSize) {</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Error reading media file &#39;&quot;</span> &lt;&lt; file_path &lt;&lt; <span class="stringliteral">&quot;&#39;&quot;</span>;</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</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; uint64_t box_size;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; FourCC box_type;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; <span class="keywordtype">bool</span> err;</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a61fc23759071d1445b81cbcc9564c6a4">BoxReader::StartTopLevelBox</a>(&amp;buffer[0], kBoxHeaderReadSize, &amp;box_type,</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; &amp;box_size, &amp;err)) {</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Could not start top level box from file &#39;&quot;</span> &lt;&lt; file_path</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; &lt;&lt; <span class="stringliteral">&quot;&#39;&quot;</span>;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</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="keywordflow">if</span> (box_type == FOURCC_MDAT) {</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; mdat_seen = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (box_type == FOURCC_MOOV) {</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; <span class="keywordflow">if</span> (!mdat_seen) {</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; <span class="comment">// &#39;moov&#39; is before &#39;mdat&#39;. Nothing to do.</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; }</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; <span class="comment">// &#39;mdat&#39; before &#39;moov&#39;. Read and parse &#39;moov&#39;.</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a2228fd06a2237990b0f9208565f31520">Parse</a>(&amp;buffer[0], bytes_read)) {</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Error parsing mp4 file &#39;&quot;</span> &lt;&lt; file_path &lt;&lt; <span class="stringliteral">&quot;&#39;&quot;</span>;</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; }</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; uint64_t bytes_to_read = box_size - bytes_read;</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; buffer.resize(bytes_to_read);</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; <span class="keywordflow">while</span> (bytes_to_read &gt; 0) {</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; bytes_read = file-&gt;Read(&amp;buffer[0], bytes_to_read);</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; <span class="keywordflow">if</span> (bytes_read &lt;= 0) {</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Error reading &#39;moov&#39; contents from file &#39;&quot;</span> &lt;&lt; file_path</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; &lt;&lt; <span class="stringliteral">&quot;&#39;&quot;</span>;</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; }</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a2228fd06a2237990b0f9208565f31520">Parse</a>(&amp;buffer[0], bytes_read)) {</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Error parsing mp4 file &#39;&quot;</span> &lt;&lt; file_path &lt;&lt; <span class="stringliteral">&quot;&#39;&quot;</span>;</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</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; bytes_to_read -= bytes_read;</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160; }</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; queue_.Reset(); <span class="comment">// So that we don&#39;t need to adjust data offsets.</span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; mdat_tail_ = 0; <span class="comment">// So it will skip boxes until mdat.</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; <span class="keywordflow">break</span>; <span class="comment">// Done.</span></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; file_position += box_size;</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; <span class="keywordflow">if</span> (!file-&gt;Seek(file_position)) {</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Error skipping box in mp4 file &#39;&quot;</span> &lt;&lt; file_path &lt;&lt; <span class="stringliteral">&quot;&#39;&quot;</span>;</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</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="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160;}</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160;</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160;<span class="keywordtype">bool</span> MP4MediaParser::ParseBox(<span class="keywordtype">bool</span>* err) {</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; <span class="keyword">const</span> uint8_t* buf;</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; <span class="keywordtype">int</span> size;</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; queue_.Peek(&amp;buf, &amp;size);</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; <span class="keywordflow">if</span> (!size)</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160;</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; scoped_ptr&lt;BoxReader&gt; reader(<a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a029ef2fe387071143c42f50ffd1a16b5">BoxReader::ReadTopLevelBox</a>(buf, size, err));</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; <span class="keywordflow">if</span> (reader.get() == NULL)</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</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">if</span> (reader-&gt;type() == FOURCC_MDAT) {</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; <span class="comment">// The code ends up here only if a MOOV box is not yet seen.</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; DCHECK(!moov_);</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; NOTIMPLEMENTED() &lt;&lt; <span class="stringliteral">&quot; Files with MDAT before MOOV is not supported yet.&quot;</span>;</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; *err = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</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;</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; <span class="comment">// Set up mdat offset for ReadMDATsUntil().</span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; mdat_tail_ = queue_.<a class="code" href="../../d1/d92/classedash__packager_1_1media_1_1OffsetByteQueue.html#aa9d018636705cab1759978cd7c6d17da">head</a>() + reader-&gt;size();</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160;</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; <span class="keywordflow">if</span> (reader-&gt;type() == FOURCC_MOOV) {</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160; *err = !ParseMoov(reader.get());</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (reader-&gt;type() == FOURCC_MOOF) {</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; moof_head_ = queue_.<a class="code" href="../../d1/d92/classedash__packager_1_1media_1_1OffsetByteQueue.html#aa9d018636705cab1759978cd7c6d17da">head</a>();</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; *err = !ParseMoof(reader.get());</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160;</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; <span class="comment">// Return early to avoid evicting &#39;moof&#39; data from queue. Auxiliary info may</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; <span class="comment">// be located anywhere in the file, including inside the &#39;moof&#39; itself.</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160; <span class="comment">// (Since &#39;default-base-is-moof&#39; is mandated, no data references can come</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; <span class="comment">// before the head of the &#39;moof&#39;, so keeping this box around is sufficient.)</span></div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; <span class="keywordflow">return</span> !(*err);</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; VLOG(2) &lt;&lt; <span class="stringliteral">&quot;Skipping top-level box: &quot;</span> &lt;&lt; FourCCToString(reader-&gt;type());</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; queue_.Pop(reader-&gt;size());</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160; <span class="keywordflow">return</span> !(*err);</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160;}</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160;</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160;<span class="keywordtype">bool</span> MP4MediaParser::ParseMoov(BoxReader* reader) {</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; <span class="keywordflow">if</span> (moov_)</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">// Already parsed the &#39;moov&#39; box.</span></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; moov_.reset(<span class="keyword">new</span> Movie);</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160; RCHECK(moov_-&gt;Parse(reader));</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; runs_.reset();</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160;</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160; std::vector&lt;scoped_refptr&lt;StreamInfo&gt; &gt; streams;</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">for</span> (std::vector&lt;Track&gt;::const_iterator track = moov_-&gt;tracks.begin();</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160; track != moov_-&gt;tracks.end(); ++track) {</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; <span class="keyword">const</span> uint32_t timescale = track-&gt;media.header.timescale;</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160;</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160; <span class="comment">// Calculate duration (based on timescale).</span></div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160; uint64_t duration = 0;</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; <span class="keywordflow">if</span> (track-&gt;media.header.duration &gt; 0) {</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160; duration = track-&gt;media.header.duration;</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (moov_-&gt;extends.header.fragment_duration &gt; 0) {</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160; DCHECK(moov_-&gt;header.timescale != 0);</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160; duration = Rescale(moov_-&gt;extends.header.fragment_duration,</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160; moov_-&gt;header.timescale,</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160; timescale);</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (moov_-&gt;header.duration &gt; 0 &amp;&amp;</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160; moov_-&gt;header.duration != std::numeric_limits&lt;uint64_t&gt;::max()) {</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160; DCHECK(moov_-&gt;header.timescale != 0);</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160; duration =</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; Rescale(moov_-&gt;header.duration, moov_-&gt;header.timescale, timescale);</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;</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160; <span class="keyword">const</span> SampleDescription&amp; samp_descr =</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; track-&gt;media.information.sample_table.description;</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; <span class="keywordtype">size_t</span> desc_idx = 0;</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; <span class="comment">// Read sample description index from mvex if it exists otherwise read</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160; <span class="comment">// from the first entry in Sample To Chunk box.</span></div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160; <span class="keywordflow">if</span> (moov_-&gt;extends.tracks.size() &gt; 0) {</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> t = 0; t &lt; moov_-&gt;extends.tracks.size(); t++) {</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160; <span class="keyword">const</span> TrackExtends&amp; trex = moov_-&gt;extends.tracks[t];</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160; <span class="keywordflow">if</span> (trex.track_id == track-&gt;header.track_id) {</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160; desc_idx = trex.default_sample_description_index;</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160; }</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160; }</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160; <span class="keyword">const</span> std::vector&lt;ChunkInfo&gt;&amp; chunk_info =</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160; track-&gt;media.information.sample_table.sample_to_chunk.chunk_info;</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160; RCHECK(chunk_info.size() &gt; 0);</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160; desc_idx = chunk_info[0].sample_description_index;</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160; }</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160; RCHECK(desc_idx &gt; 0);</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160; desc_idx -= 1; <span class="comment">// BMFF descriptor index is one-based</span></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> (samp_descr.type == kAudio) {</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160; RCHECK(!samp_descr.audio_entries.empty());</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160;</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160; <span class="comment">// It is not uncommon to find otherwise-valid files with incorrect sample</span></div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160; <span class="comment">// description indices, so we fail gracefully in that case.</span></div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160; <span class="keywordflow">if</span> (desc_idx &gt;= samp_descr.audio_entries.size())</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160; desc_idx = 0;</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>&#160;</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>&#160; <span class="keyword">const</span> AudioSampleEntry&amp; entry = samp_descr.audio_entries[desc_idx];</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>&#160; <span class="keyword">const</span> FourCC actual_format = entry.GetActualFormat();</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>&#160; AudioCodec codec = FourCCToAudioCodec(actual_format);</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>&#160; uint8_t num_channels = 0;</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>&#160; uint32_t sampling_frequency = 0;</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>&#160; uint8_t audio_object_type = 0;</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>&#160; uint32_t max_bitrate = 0;</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>&#160; uint32_t avg_bitrate = 0;</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160; std::vector&lt;uint8_t&gt; extra_data;</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160;</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>&#160; <span class="keywordflow">switch</span> (actual_format) {</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>&#160; <span class="keywordflow">case</span> FOURCC_MP4A:</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>&#160; <span class="comment">// Check if it is MPEG4 AAC defined in ISO 14496 Part 3 or</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>&#160; <span class="comment">// supported MPEG2 AAC variants.</span></div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>&#160; <span class="keywordflow">if</span> (entry.esds.es_descriptor.IsAAC()) {</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>&#160; codec = kCodecAAC;</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>&#160; <span class="keyword">const</span> AACAudioSpecificConfig&amp; aac_audio_specific_config =</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>&#160; entry.esds.aac_audio_specific_config;</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>&#160; num_channels = aac_audio_specific_config.num_channels();</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160; sampling_frequency = aac_audio_specific_config.frequency();</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>&#160; audio_object_type = aac_audio_specific_config.audio_object_type();</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>&#160; extra_data = entry.esds.es_descriptor.decoder_specific_info();</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (entry.esds.es_descriptor.IsDTS()) {</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>&#160; ObjectType audio_type = entry.esds.es_descriptor.object_type();</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>&#160; <span class="keywordflow">switch</span> (audio_type) {</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>&#160; <span class="keywordflow">case</span> kDTSC:</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>&#160; codec = kCodecDTSC;</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>&#160; <span class="keywordflow">case</span> kDTSE:</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>&#160; codec = kCodecDTSE;</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160; <span class="keywordflow">case</span> kDTSH:</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160; codec = kCodecDTSH;</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>&#160; <span class="keywordflow">case</span> kDTSL:</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>&#160; codec = kCodecDTSL;</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Unsupported audio type &quot;</span> &lt;&lt; audio_type</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>&#160; &lt;&lt; <span class="stringliteral">&quot; in stsd box.&quot;</span>;</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>&#160; }</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>&#160; num_channels = entry.esds.aac_audio_specific_config.num_channels();</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>&#160; <span class="comment">// For dts audio in esds, current supported number of channels is 6</span></div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160; <span class="comment">// as the only supported channel layout is 5.1.</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>&#160; <span class="keywordflow">if</span> (num_channels != kDtsAudioNumChannels) {</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Unsupported channel count &quot;</span> &lt;&lt; num_channels</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>&#160; &lt;&lt; <span class="stringliteral">&quot; for audio type &quot;</span> &lt;&lt; audio_type &lt;&lt; <span class="stringliteral">&quot;.&quot;</span>;</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>&#160; }</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>&#160; sampling_frequency = entry.samplerate;</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>&#160; max_bitrate = entry.esds.es_descriptor.max_bitrate();</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160; avg_bitrate = entry.esds.es_descriptor.avg_bitrate();</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Unsupported audio format 0x&quot;</span> &lt;&lt; std::hex</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>&#160; &lt;&lt; actual_format &lt;&lt; <span class="stringliteral">&quot; in stsd box.&quot;</span>;</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>&#160; }</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>&#160; <span class="keywordflow">case</span> FOURCC_DTSC:</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>&#160; FALLTHROUGH_INTENDED;</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>&#160; <span class="keywordflow">case</span> FOURCC_DTSH:</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>&#160; FALLTHROUGH_INTENDED;</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>&#160; <span class="keywordflow">case</span> FOURCC_DTSL:</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>&#160; FALLTHROUGH_INTENDED;</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>&#160; <span class="keywordflow">case</span> FOURCC_DTSE:</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>&#160; FALLTHROUGH_INTENDED;</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>&#160; <span class="keywordflow">case</span> FOURCC_DTSM:</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>&#160; extra_data = entry.ddts.extra_data;</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>&#160; max_bitrate = entry.ddts.max_bitrate;</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>&#160; avg_bitrate = entry.ddts.avg_bitrate;</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>&#160; num_channels = entry.channelcount;</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>&#160; sampling_frequency = entry.samplerate;</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>&#160; <span class="keywordflow">case</span> FOURCC_AC3:</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>&#160; extra_data = entry.dac3.data;</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>&#160; num_channels = entry.channelcount;</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>&#160; sampling_frequency = entry.samplerate;</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>&#160; <span class="keywordflow">case</span> FOURCC_EAC3:</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>&#160; extra_data = entry.dec3.data;</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160; num_channels = entry.channelcount;</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>&#160; sampling_frequency = entry.samplerate;</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Unsupported audio format 0x&quot;</span> &lt;&lt; std::hex</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160; &lt;&lt; actual_format &lt;&lt; <span class="stringliteral">&quot; in stsd box.&quot;</span>;</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>&#160; }</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; <span class="keywordtype">bool</span> is_encrypted = entry.sinf.info.track_encryption.is_encrypted;</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>&#160; DVLOG(1) &lt;&lt; <span class="stringliteral">&quot;is_audio_track_encrypted_: &quot;</span> &lt;&lt; is_encrypted;</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>&#160; streams.push_back(<span class="keyword">new</span> AudioStreamInfo(</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>&#160; track-&gt;header.track_id,</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160; timescale,</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>&#160; duration,</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>&#160; codec,</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>&#160; <a class="code" href="../../da/d27/classedash__packager_1_1media_1_1AudioStreamInfo.html#aa62e486f463c867b8e2f41ebb4ecea34">AudioStreamInfo::GetCodecString</a>(codec, audio_object_type),</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160; track-&gt;media.header.language.code,</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160; entry.samplesize,</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160; num_channels,</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>&#160; sampling_frequency,</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>&#160; max_bitrate,</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>&#160; avg_bitrate,</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>&#160; extra_data.data(),</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>&#160; extra_data.size(),</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>&#160; is_encrypted));</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;</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>&#160; <span class="keywordflow">if</span> (samp_descr.type == kVideo) {</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>&#160; RCHECK(!samp_descr.video_entries.empty());</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>&#160; <span class="keywordflow">if</span> (desc_idx &gt;= samp_descr.video_entries.size())</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>&#160; desc_idx = 0;</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>&#160; <span class="keyword">const</span> VideoSampleEntry&amp; entry = samp_descr.video_entries[desc_idx];</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>&#160;</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>&#160; uint32_t coded_width = entry.width;</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>&#160; uint32_t coded_height = entry.height;</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>&#160; uint32_t pixel_width = entry.pixel_aspect.h_spacing;</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>&#160; uint32_t pixel_height = entry.pixel_aspect.v_spacing;</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>&#160; <span class="keywordflow">if</span> (pixel_width == 0 &amp;&amp; pixel_height == 0) {</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>&#160; pixel_width = 1;</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>&#160; pixel_height = 1;</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; std::string codec_string;</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>&#160; uint8_t nalu_length_size = 0;</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; <span class="keyword">const</span> FourCC actual_format = entry.GetActualFormat();</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>&#160; <span class="keyword">const</span> VideoCodec video_codec = FourCCToVideoCodec(actual_format);</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>&#160; <span class="keywordflow">switch</span> (actual_format) {</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>&#160; <span class="keywordflow">case</span> FOURCC_AVC1: {</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>&#160; AVCDecoderConfiguration avc_config;</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>&#160; <span class="keywordflow">if</span> (!avc_config.Parse(entry.codec_config_record.data)) {</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Failed to parse avcc.&quot;</span>;</div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</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; codec_string = avc_config.GetCodecString();</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>&#160; nalu_length_size = avc_config.nalu_length_size();</div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>&#160;</div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>&#160; <span class="keywordflow">if</span> (coded_width != avc_config.coded_width() ||</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>&#160; coded_height != avc_config.coded_height()) {</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>&#160; LOG(WARNING) &lt;&lt; <span class="stringliteral">&quot;Resolution in VisualSampleEntry (&quot;</span> &lt;&lt; coded_width</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>&#160; &lt;&lt; <span class="stringliteral">&quot;,&quot;</span> &lt;&lt; coded_height</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>&#160; &lt;&lt; <span class="stringliteral">&quot;) does not match with resolution in &quot;</span></div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>&#160; <span class="stringliteral">&quot;AVCDecoderConfigurationRecord (&quot;</span></div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>&#160; &lt;&lt; avc_config.coded_width() &lt;&lt; <span class="stringliteral">&quot;,&quot;</span></div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>&#160; &lt;&lt; avc_config.coded_height()</div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>&#160; &lt;&lt; <span class="stringliteral">&quot;). Use AVCDecoderConfigurationRecord.&quot;</span>;</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>&#160; coded_width = avc_config.coded_width();</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>&#160; coded_height = avc_config.coded_height();</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>&#160; }</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>&#160;</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>&#160; <span class="keywordflow">if</span> (pixel_width != avc_config.pixel_width() ||</div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>&#160; pixel_height != avc_config.pixel_height()) {</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>&#160; LOG_IF(WARNING, pixel_width != 1 || pixel_height != 1)</div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>&#160; &lt;&lt; <span class="stringliteral">&quot;Pixel aspect ratio in PASP box (&quot;</span> &lt;&lt; pixel_width &lt;&lt; <span class="stringliteral">&quot;,&quot;</span></div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>&#160; &lt;&lt; pixel_height</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>&#160; &lt;&lt; <span class="stringliteral">&quot;) does not match with SAR in AVCDecoderConfigurationRecord &quot;</span></div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>&#160; <span class="stringliteral">&quot;(&quot;</span></div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>&#160; &lt;&lt; avc_config.pixel_width() &lt;&lt; <span class="stringliteral">&quot;,&quot;</span> &lt;&lt; avc_config.pixel_height()</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>&#160; &lt;&lt; <span class="stringliteral">&quot;). Use AVCDecoderConfigurationRecord.&quot;</span>;</div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>&#160; pixel_width = avc_config.pixel_width();</div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>&#160; pixel_height = avc_config.pixel_height();</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>&#160; }</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>&#160; <span class="keywordflow">break</span>;</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; <span class="keywordflow">case</span> FOURCC_HEV1:</div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>&#160; <span class="keywordflow">case</span> FOURCC_HVC1: {</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>&#160; HEVCDecoderConfiguration hevc_config;</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>&#160; <span class="keywordflow">if</span> (!hevc_config.Parse(entry.codec_config_record.data)) {</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Failed to parse hevc.&quot;</span>;</div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>&#160; }</div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>&#160; codec_string = hevc_config.GetCodecString(video_codec);</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>&#160; nalu_length_size = hevc_config.nalu_length_size();</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>&#160; }</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>&#160; <span class="keywordflow">case</span> FOURCC_VP08:</div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>&#160; <span class="keywordflow">case</span> FOURCC_VP09:</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>&#160; <span class="keywordflow">case</span> FOURCC_VP10: {</div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>&#160; VPCodecConfiguration vp_config;</div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>&#160; <span class="keywordflow">if</span> (!vp_config.Parse(entry.codec_config_record.data)) {</div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Failed to parse vpcc.&quot;</span>;</div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>&#160; }</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>&#160; codec_string = vp_config.GetCodecString(video_codec);</div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>&#160; <span class="keywordflow">break</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; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Unsupported video format &quot;</span></div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>&#160; &lt;&lt; FourCCToString(actual_format) &lt;&lt; <span class="stringliteral">&quot; in stsd box.&quot;</span>;</div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>&#160; }</div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>&#160;</div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>&#160; <span class="keywordtype">bool</span> is_encrypted = entry.sinf.info.track_encryption.is_encrypted;</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>&#160; DVLOG(1) &lt;&lt; <span class="stringliteral">&quot;is_video_track_encrypted_: &quot;</span> &lt;&lt; is_encrypted;</div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>&#160; streams.push_back(<span class="keyword">new</span> VideoStreamInfo(</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>&#160; track-&gt;header.track_id, timescale, duration, video_codec,</div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>&#160; codec_string, track-&gt;media.header.language.code, coded_width,</div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>&#160; coded_height, pixel_width, pixel_height,</div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>&#160; 0, <span class="comment">// trick_play_rate</span></div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>&#160; nalu_length_size, entry.codec_config_record.data.data(),</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>&#160; entry.codec_config_record.data.size(), is_encrypted));</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>&#160; }</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;</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>&#160; init_cb_.Run(streams);</div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>&#160; <span class="keywordflow">if</span> (!FetchKeysIfNecessary(moov_-&gt;pssh))</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>&#160; runs_.reset(<span class="keyword">new</span> TrackRunIterator(moov_.get()));</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>&#160; RCHECK(runs_-&gt;Init());</div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>&#160; ChangeState(kEmittingSamples);</div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>&#160;}</div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>&#160;</div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>&#160;<span class="keywordtype">bool</span> MP4MediaParser::ParseMoof(BoxReader* reader) {</div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>&#160; <span class="comment">// Must already have initialization segment.</span></div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>&#160; RCHECK(moov_.get());</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>&#160; MovieFragment moof;</div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>&#160; RCHECK(moof.Parse(reader));</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>&#160; <span class="keywordflow">if</span> (!runs_)</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>&#160; runs_.reset(<span class="keyword">new</span> TrackRunIterator(moov_.get()));</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>&#160; RCHECK(runs_-&gt;Init(moof));</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>&#160; <span class="keywordflow">if</span> (!FetchKeysIfNecessary(moof.pssh))</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>&#160; ChangeState(kEmittingSamples);</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</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;</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>&#160;<span class="keywordtype">bool</span> MP4MediaParser::FetchKeysIfNecessary(</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>&#160; <span class="keyword">const</span> std::vector&lt;ProtectionSystemSpecificHeader&gt;&amp; headers) {</div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>&#160; <span class="keywordflow">if</span> (headers.empty())</div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>&#160;</div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>&#160; <span class="comment">// An error will be returned later if the samples need to be decrypted.</span></div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>&#160; <span class="keywordflow">if</span> (!decryption_key_source_)</div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>&#160;</div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>&#160; <span class="comment">// TODO(tinskip): Pass in raw &#39;pssh&#39; boxes to FetchKeys. This will allow</span></div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>&#160; <span class="comment">// supporting multiple keysystems. Move this to KeySource.</span></div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>&#160; std::vector&lt;uint8_t&gt; widevine_system_id;</div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>&#160; base::HexStringToBytes(kWidevineKeySystemId, &amp;widevine_system_id);</div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>&#160; <span class="keywordflow">for</span> (std::vector&lt;ProtectionSystemSpecificHeader&gt;::const_iterator iter =</div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>&#160; headers.begin(); iter != headers.end(); ++iter) {</div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>&#160; ProtectionSystemSpecificInfo info;</div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>&#160; RCHECK(info.Parse(iter-&gt;raw_box.data(), iter-&gt;raw_box.size()));</div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>&#160; <span class="keywordflow">if</span> (info.system_id() == widevine_system_id) {</div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>&#160; Status status = decryption_key_source_-&gt;<a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a4020839c22a550bf71d891bf55087e0b">FetchKeys</a>(info.pssh_data());</div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>&#160; <span class="keywordflow">if</span> (!status.ok()) {</div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Error fetching decryption keys: &quot;</span> &lt;&lt; status;</div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>&#160; }</div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>&#160; }</div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>&#160; }</div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>&#160;</div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;No viable &#39;pssh&#39; box found for content decryption.&quot;</span>;</div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>&#160;}</div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>&#160;</div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>&#160;<span class="keywordtype">bool</span> MP4MediaParser::EnqueueSample(<span class="keywordtype">bool</span>* err) {</div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>&#160; <span class="keywordflow">if</span> (!runs_-&gt;IsRunValid()) {</div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>&#160; <span class="comment">// Remain in kEnqueueingSamples state, discarding data, until the end of</span></div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>&#160; <span class="comment">// the current &#39;mdat&#39; box has been appended to the queue.</span></div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>&#160; <span class="keywordflow">if</span> (!queue_.<a class="code" href="../../d1/d92/classedash__packager_1_1media_1_1OffsetByteQueue.html#af2a41afe5b213be301b7b9f7ca555fae">Trim</a>(mdat_tail_))</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>&#160;</div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>&#160; ChangeState(kParsingBoxes);</div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>&#160; }</div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>&#160;</div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>&#160; <span class="keywordflow">if</span> (!runs_-&gt;IsSampleValid()) {</div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>&#160; runs_-&gt;AdvanceRun();</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>&#160; }</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; DCHECK(!(*err));</div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>&#160;</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>&#160; <span class="keyword">const</span> uint8_t* buf;</div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>&#160; <span class="keywordtype">int</span> buf_size;</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>&#160; queue_.Peek(&amp;buf, &amp;buf_size);</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>&#160; <span class="keywordflow">if</span> (!buf_size)</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>&#160;</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>&#160; <span class="comment">// Skip this entire track if it is not audio nor video.</span></div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>&#160; <span class="keywordflow">if</span> (!runs_-&gt;is_audio() &amp;&amp; !runs_-&gt;is_video())</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>&#160; runs_-&gt;AdvanceRun();</div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>&#160;</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>&#160; <span class="comment">// Attempt to cache the auxiliary information first. Aux info is usually</span></div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>&#160; <span class="comment">// placed in a contiguous block before the sample data, rather than being</span></div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>&#160; <span class="comment">// interleaved. If we didn&#39;t cache it, this would require that we retain the</span></div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>&#160; <span class="comment">// start of the segment buffer while reading samples. Aux info is typically</span></div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>&#160; <span class="comment">// quite small compared to sample data, so this pattern is useful on</span></div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>&#160; <span class="comment">// memory-constrained devices where the source buffer consumes a substantial</span></div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>&#160; <span class="comment">// portion of the total system memory.</span></div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>&#160; <span class="keywordflow">if</span> (runs_-&gt;AuxInfoNeedsToBeCached()) {</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>&#160; queue_.<a class="code" href="../../d1/d92/classedash__packager_1_1media_1_1OffsetByteQueue.html#a32b06f514ebfd5aef820a9b91228a854">PeekAt</a>(runs_-&gt;aux_info_offset() + moof_head_, &amp;buf, &amp;buf_size);</div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>&#160; <span class="keywordflow">if</span> (buf_size &lt; runs_-&gt;aux_info_size())</div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>&#160; *err = !runs_-&gt;CacheAuxInfo(buf, buf_size);</div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>&#160; <span class="keywordflow">return</span> !*err;</div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>&#160; }</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; int64_t sample_offset = runs_-&gt;sample_offset() + moof_head_;</div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>&#160; queue_.<a class="code" href="../../d1/d92/classedash__packager_1_1media_1_1OffsetByteQueue.html#a32b06f514ebfd5aef820a9b91228a854">PeekAt</a>(sample_offset, &amp;buf, &amp;buf_size);</div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>&#160; <span class="keywordflow">if</span> (buf_size &lt; runs_-&gt;sample_size()) {</div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>&#160; <span class="keywordflow">if</span> (sample_offset &lt; queue_.<a class="code" href="../../d1/d92/classedash__packager_1_1media_1_1OffsetByteQueue.html#aa9d018636705cab1759978cd7c6d17da">head</a>()) {</div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Incorrect sample offset &quot;</span> &lt;&lt; sample_offset</div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>&#160; &lt;&lt; <span class="stringliteral">&quot; &lt; &quot;</span> &lt;&lt; queue_.<a class="code" href="../../d1/d92/classedash__packager_1_1media_1_1OffsetByteQueue.html#aa9d018636705cab1759978cd7c6d17da">head</a>();</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>&#160; *err = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>&#160; }</div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>&#160; }</div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>&#160;</div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>&#160; scoped_refptr&lt;MediaSample&gt; stream_sample(<a class="code" href="../../d8/d6c/classedash__packager_1_1media_1_1MediaSample.html#ac65ec88fbe6d8b72c65b1ff3f68c5b02">MediaSample::CopyFrom</a>(</div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>&#160; buf, runs_-&gt;sample_size(), runs_-&gt;is_keyframe()));</div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>&#160; <span class="keywordflow">if</span> (runs_-&gt;is_encrypted()) {</div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>&#160; <span class="keywordflow">if</span> (!decryptor_source_) {</div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>&#160; *err = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Encrypted media sample encountered, but decryption is not &quot;</span></div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>&#160; <span class="stringliteral">&quot;enabled&quot;</span>;</div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>&#160; }</div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>&#160;</div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>&#160; scoped_ptr&lt;DecryptConfig&gt; decrypt_config = runs_-&gt;GetDecryptConfig();</div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>&#160; <span class="keywordflow">if</span> (!decrypt_config ||</div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>&#160; !decryptor_source_-&gt;DecryptSampleBuffer(decrypt_config.get(),</div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>&#160; stream_sample-&gt;writable_data(),</div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>&#160; stream_sample-&gt;data_size())) {</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>&#160; *err = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Cannot decrypt samples.&quot;</span>;</div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</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; }</div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>&#160;</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>&#160; stream_sample-&gt;set_dts(runs_-&gt;dts());</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>&#160; stream_sample-&gt;set_pts(runs_-&gt;cts());</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>&#160; stream_sample-&gt;set_duration(runs_-&gt;duration());</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; DVLOG(3) &lt;&lt; <span class="stringliteral">&quot;Pushing frame: &quot;</span></div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>&#160; &lt;&lt; <span class="stringliteral">&quot;, key=&quot;</span> &lt;&lt; runs_-&gt;is_keyframe()</div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>&#160; &lt;&lt; <span class="stringliteral">&quot;, dur=&quot;</span> &lt;&lt; runs_-&gt;duration()</div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>&#160; &lt;&lt; <span class="stringliteral">&quot;, dts=&quot;</span> &lt;&lt; runs_-&gt;dts()</div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>&#160; &lt;&lt; <span class="stringliteral">&quot;, cts=&quot;</span> &lt;&lt; runs_-&gt;cts()</div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>&#160; &lt;&lt; <span class="stringliteral">&quot;, size=&quot;</span> &lt;&lt; runs_-&gt;sample_size();</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; <span class="keywordflow">if</span> (!new_sample_cb_.Run(runs_-&gt;track_id(), stream_sample)) {</div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>&#160; *err = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Failed to process the sample.&quot;</span>;</div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>&#160; }</div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>&#160;</div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>&#160; runs_-&gt;AdvanceSample();</div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</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;</div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>&#160;<span class="keywordtype">bool</span> MP4MediaParser::ReadAndDiscardMDATsUntil(<span class="keyword">const</span> int64_t offset) {</div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>&#160; <span class="keywordtype">bool</span> err = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>&#160; <span class="keywordflow">while</span> (mdat_tail_ &lt; offset) {</div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>&#160; <span class="keyword">const</span> uint8_t* buf;</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>&#160; <span class="keywordtype">int</span> size;</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>&#160; queue_.<a class="code" href="../../d1/d92/classedash__packager_1_1media_1_1OffsetByteQueue.html#a32b06f514ebfd5aef820a9b91228a854">PeekAt</a>(mdat_tail_, &amp;buf, &amp;size);</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>&#160;</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>&#160; FourCC type;</div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>&#160; uint64_t box_sz;</div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a61fc23759071d1445b81cbcc9564c6a4">BoxReader::StartTopLevelBox</a>(buf, size, &amp;type, &amp;box_sz, &amp;err))</div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>&#160;</div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>&#160; mdat_tail_ += box_sz;</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; queue_.<a class="code" href="../../d1/d92/classedash__packager_1_1media_1_1OffsetByteQueue.html#af2a41afe5b213be301b7b9f7ca555fae">Trim</a>(std::min(mdat_tail_, offset));</div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>&#160; <span class="keywordflow">return</span> !err;</div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>&#160;}</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;<span class="keywordtype">void</span> MP4MediaParser::ChangeState(State new_state) {</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>&#160; DVLOG(2) &lt;&lt; <span class="stringliteral">&quot;Changing state: &quot;</span> &lt;&lt; new_state;</div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>&#160; state_ = new_state;</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;</div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>&#160;} <span class="comment">// namespace mp4</span></div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>&#160;} <span class="comment">// namespace edash_packager</span></div>
<div class="ttc" id="classedash__packager_1_1media_1_1OffsetByteQueue_html_af2a41afe5b213be301b7b9f7ca555fae"><div class="ttname"><a href="../../d1/d92/classedash__packager_1_1media_1_1OffsetByteQueue.html#af2a41afe5b213be301b7b9f7ca555fae">edash_packager::media::OffsetByteQueue::Trim</a></div><div class="ttdeci">bool Trim(int64_t max_offset)</div><div class="ttdef"><b>Definition:</b> <a href="../../df/d1a/offset__byte__queue_8cc_source.html#l00051">offset_byte_queue.cc:51</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1BoxReader_html_a029ef2fe387071143c42f50ffd1a16b5"><div class="ttname"><a href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a029ef2fe387071143c42f50ffd1a16b5">edash_packager::media::mp4::BoxReader::ReadTopLevelBox</a></div><div class="ttdeci">static BoxReader * ReadTopLevelBox(const uint8_t *buf, const size_t buf_size, bool *err)</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/df1/box__reader_8cc_source.html#l00037">box_reader.cc:37</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1DecryptorSource_html"><div class="ttname"><a href="../../dc/df1/classedash__packager_1_1media_1_1DecryptorSource.html">edash_packager::media::DecryptorSource</a></div><div class="ttdoc">DecryptorSource wraps KeySource and is responsible for decryptor management. </div><div class="ttdef"><b>Definition:</b> <a href="../../d0/d7d/decryptor__source_8h_source.html#l00021">decryptor_source.h:21</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1MediaSample_html_ac65ec88fbe6d8b72c65b1ff3f68c5b02"><div class="ttname"><a href="../../d8/d6c/classedash__packager_1_1media_1_1MediaSample.html#ac65ec88fbe6d8b72c65b1ff3f68c5b02">edash_packager::media::MediaSample::CopyFrom</a></div><div class="ttdeci">static scoped_refptr&lt; MediaSample &gt; CopyFrom(const uint8_t *data, size_t size, bool is_key_frame)</div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d0d/media__sample_8cc_source.html#l00045">media_sample.cc:45</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1OffsetByteQueue_html_a32b06f514ebfd5aef820a9b91228a854"><div class="ttname"><a href="../../d1/d92/classedash__packager_1_1media_1_1OffsetByteQueue.html#a32b06f514ebfd5aef820a9b91228a854">edash_packager::media::OffsetByteQueue::PeekAt</a></div><div class="ttdeci">void PeekAt(int64_t offset, const uint8_t **buf, int *size)</div><div class="ttdef"><b>Definition:</b> <a href="../../df/d1a/offset__byte__queue_8cc_source.html#l00041">offset_byte_queue.cc:41</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser_html_a6dafe794d755100428ed427791ae0e43"><div class="ttname"><a href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a6dafe794d755100428ed427791ae0e43">edash_packager::media::mp4::MP4MediaParser::LoadMoov</a></div><div class="ttdeci">bool LoadMoov(const std::string &amp;file_path)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/def/mp4__media__parser_8cc_source.html#l00164">mp4_media_parser.cc:164</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html_a4020839c22a550bf71d891bf55087e0b"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a4020839c22a550bf71d891bf55087e0b">edash_packager::media::KeySource::FetchKeys</a></div><div class="ttdeci">virtual Status FetchKeys(const std::vector&lt; uint8_t &gt; &amp;content_id, const std::string &amp;policy)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/dd6/key__source_8cc_source.html#l00030">key_source.cc:30</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html">edash_packager::media::KeySource</a></div><div class="ttdoc">KeySource is responsible for encryption key acquisition. </div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d3f/key__source_8h_source.html#l00029">key_source.h:29</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1BoxReader_html_a61fc23759071d1445b81cbcc9564c6a4"><div class="ttname"><a href="../../db/d6c/classedash__packager_1_1media_1_1mp4_1_1BoxReader.html#a61fc23759071d1445b81cbcc9564c6a4">edash_packager::media::mp4::BoxReader::StartTopLevelBox</a></div><div class="ttdeci">static bool StartTopLevelBox(const uint8_t *buf, const size_t buf_size, FourCC *type, uint64_t *box_size, bool *err) WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/df1/box__reader_8cc_source.html#l00060">box_reader.cc:60</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser_html_a923b9bdc43e77a0f072c6e637f9af910"><div class="ttname"><a href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a923b9bdc43e77a0f072c6e637f9af910">edash_packager::media::mp4::MP4MediaParser::Flush</a></div><div class="ttdeci">bool Flush() override WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/def/mp4__media__parser_8cc_source.html#l00123">mp4_media_parser.cc:123</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser_html_a4ef745c8846adc9e932059a4e91f67c2"><div class="ttname"><a href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a4ef745c8846adc9e932059a4e91f67c2">edash_packager::media::mp4::MP4MediaParser::Init</a></div><div class="ttdeci">void Init(const InitCB &amp;init_cb, const NewSampleCB &amp;new_sample_cb, KeySource *decryption_key_source) override</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/def/mp4__media__parser_8cc_source.html#l00100">mp4_media_parser.cc:100</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1OffsetByteQueue_html_aa9d018636705cab1759978cd7c6d17da"><div class="ttname"><a href="../../d1/d92/classedash__packager_1_1media_1_1OffsetByteQueue.html#aa9d018636705cab1759978cd7c6d17da">edash_packager::media::OffsetByteQueue::head</a></div><div class="ttdeci">int64_t head()</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d34/offset__byte__queue_8h_source.html#l00052">offset_byte_queue.h:52</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser_html_a2228fd06a2237990b0f9208565f31520"><div class="ttname"><a href="../../d8/d0d/classedash__packager_1_1media_1_1mp4_1_1MP4MediaParser.html#a2228fd06a2237990b0f9208565f31520">edash_packager::media::mp4::MP4MediaParser::Parse</a></div><div class="ttdeci">bool Parse(const uint8_t *buf, int size) override WARN_UNUSED_RESULT</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/def/mp4__media__parser_8cc_source.html#l00130">mp4_media_parser.cc:130</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1File_html_a47194a7cd303640c2a8b689d18ef9701"><div class="ttname"><a href="../../de/d19/classedash__packager_1_1media_1_1File.html#a47194a7cd303640c2a8b689d18ef9701">edash_packager::media::File::OpenWithNoBuffering</a></div><div class="ttdeci">static File * OpenWithNoBuffering(const char *file_name, const char *mode)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/dfc/file_8cc_source.html#l00151">file.cc:151</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1AudioStreamInfo_html_aa62e486f463c867b8e2f41ebb4ecea34"><div class="ttname"><a href="../../da/d27/classedash__packager_1_1media_1_1AudioStreamInfo.html#aa62e486f463c867b8e2f41ebb4ecea34">edash_packager::media::AudioStreamInfo::GetCodecString</a></div><div class="ttdeci">static std::string GetCodecString(AudioCodec codec, uint8_t audio_object_type)</div><div class="ttdef"><b>Definition:</b> <a href="../../da/d04/audio__stream__info_8cc_source.html#l00097">audio_stream_info.cc:97</a></div></div>
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