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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2015 Google Inc. All rights reserved.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// Use of this source code is governed by a BSD-style</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// license that can be found in the LICENSE file or at</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;</div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#include &quot;packager/media/filters/vp_codec_configuration.h&quot;</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/strings/string_number_conversions.h&quot;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &quot;packager/base/strings/string_util.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/bit_reader.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/buffer_writer.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/stringprintf.h&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &quot;packager/media/formats/mp4/rcheck.h&quot;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="keyword">namespace </span>edash_packager {</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="keyword">namespace </span>media {</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;std::string VPCodecAsString(VideoCodec codec) {</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160; <span class="keywordflow">switch</span> (codec) {</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; <span class="keywordflow">case</span> kCodecVP8:</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;vp08&quot;</span>;</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; <span class="keywordflow">case</span> kCodecVP9:</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;vp09&quot;</span>;</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; <span class="keywordflow">case</span> kCodecVP10:</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;vp10&quot;</span>;</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; LOG(WARNING) &lt;&lt; <span class="stringliteral">&quot;Unknown VP codec: &quot;</span> &lt;&lt; codec;</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; <span class="keywordflow">return</span> std::string();</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; }</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;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;} <span class="comment">// namespace</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;VPCodecConfiguration::VPCodecConfiguration()</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; : profile_(0),</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; level_(0),</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; bit_depth_(0),</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; color_space_(0),</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; chroma_subsampling_(0),</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; transfer_function_(0),</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; video_full_range_flag_(false) {}</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;VPCodecConfiguration::VPCodecConfiguration(</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; uint8_t profile,</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; uint8_t level,</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; uint8_t bit_depth,</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; uint8_t color_space,</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; uint8_t chroma_subsampling,</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; uint8_t transfer_function,</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordtype">bool</span> video_full_range_flag,</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keyword">const</span> std::vector&lt;uint8_t&gt;&amp; codec_initialization_data)</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; : profile_(profile),</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; level_(level),</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; bit_depth_(bit_depth),</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; color_space_(color_space),</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; chroma_subsampling_(chroma_subsampling),</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; transfer_function_(transfer_function),</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; video_full_range_flag_(video_full_range_flag),</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; codec_initialization_data_(codec_initialization_data) {}</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;VPCodecConfiguration::~VPCodecConfiguration(){};</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;</div>
<div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="../../d7/d85/classedash__packager_1_1media_1_1VPCodecConfiguration.html#a3428d45e1b7c31fc6dd3bef0c8dc46c7"> 65</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../d7/d85/classedash__packager_1_1media_1_1VPCodecConfiguration.html#a3428d45e1b7c31fc6dd3bef0c8dc46c7">VPCodecConfiguration::Parse</a>(<span class="keyword">const</span> std::vector&lt;uint8_t&gt;&amp; data) {</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <a class="code" href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html">BitReader</a> reader(data.data(), data.size());</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; RCHECK(reader.ReadBits(8, &amp;profile_));</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; RCHECK(reader.ReadBits(8, &amp;level_));</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; RCHECK(reader.ReadBits(4, &amp;bit_depth_));</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; RCHECK(reader.ReadBits(4, &amp;color_space_));</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; RCHECK(reader.ReadBits(4, &amp;chroma_subsampling_));</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; RCHECK(reader.ReadBits(3, &amp;transfer_function_));</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; RCHECK(reader.ReadBits(1, &amp;video_full_range_flag_));</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; uint16_t codec_initialization_data_size = 0;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; RCHECK(reader.ReadBits(16, &amp;codec_initialization_data_size));</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; RCHECK(reader.bits_available() &gt;= codec_initialization_data_size * 8);</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keyword">const</span> <span class="keywordtype">size_t</span> header_size = data.size() - reader.bits_available() / 8;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; codec_initialization_data_.assign(</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; data.begin() + header_size,</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; data.begin() + header_size + codec_initialization_data_size);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;}</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="../../d7/d85/classedash__packager_1_1media_1_1VPCodecConfiguration.html#a295be0ed186f54b41da39522bc0d9699"> 84</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../d7/d85/classedash__packager_1_1media_1_1VPCodecConfiguration.html#a295be0ed186f54b41da39522bc0d9699">VPCodecConfiguration::Write</a>(std::vector&lt;uint8_t&gt;* data)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html">BufferWriter</a> writer;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; writer.<a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115">AppendInt</a>(profile_);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; writer.<a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115">AppendInt</a>(level_);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; uint8_t bit_depth_color_space = (bit_depth_ &lt;&lt; 4) | color_space_;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; writer.<a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115">AppendInt</a>(bit_depth_color_space);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; uint8_t chroma = (chroma_subsampling_ &lt;&lt; 4) | (transfer_function_ &lt;&lt; 1) |</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; (video_full_range_flag_ ? 1 : 0);</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; writer.<a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115">AppendInt</a>(chroma);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; uint16_t codec_initialization_data_size = codec_initialization_data_.size();</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; writer.<a class="code" href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115">AppendInt</a>(codec_initialization_data_size);</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; writer.AppendVector(codec_initialization_data_);</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; writer.SwapBuffer(data);</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;}</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;</div>
<div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="../../d7/d85/classedash__packager_1_1media_1_1VPCodecConfiguration.html#a56c474703175b9a323ef24553da42704"> 99</a></span>&#160;std::string <a class="code" href="../../d7/d85/classedash__packager_1_1media_1_1VPCodecConfiguration.html#a56c474703175b9a323ef24553da42704">VPCodecConfiguration::GetCodecString</a>(VideoCodec codec)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keyword">const</span> std::string fields[] = {</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; base::IntToString(profile_),</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; base::IntToString(level_),</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; base::IntToString(bit_depth_),</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; base::IntToString(color_space_),</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; base::IntToString(chroma_subsampling_),</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; base::IntToString(transfer_function_),</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; (video_full_range_flag_ ? <span class="stringliteral">&quot;01&quot;</span> : <span class="stringliteral">&quot;00&quot;</span>),</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; };</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; std::string codec_string = VPCodecAsString(codec);</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="keywordflow">for</span> (<span class="keyword">const</span> std::string&amp; field : fields) {</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="comment">// Make sure every field is at least 2-chars wide. The space will be</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="comment">// replaced with &#39;0&#39; afterwards.</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; base::StringAppendF(&amp;codec_string, <span class="stringliteral">&quot;.%2s&quot;</span>, field.c_str());</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; base::ReplaceChars(codec_string, <span class="stringliteral">&quot; &quot;</span>, <span class="stringliteral">&quot;0&quot;</span>, &amp;codec_string);</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="keywordflow">return</span> codec_string;</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;}</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;} <span class="comment">// namespace edash_packager</span></div>
<div class="ttc" id="classedash__packager_1_1media_1_1VPCodecConfiguration_html_a295be0ed186f54b41da39522bc0d9699"><div class="ttname"><a href="../../d7/d85/classedash__packager_1_1media_1_1VPCodecConfiguration.html#a295be0ed186f54b41da39522bc0d9699">edash_packager::media::VPCodecConfiguration::Write</a></div><div class="ttdeci">void Write(std::vector&lt; uint8_t &gt; *data) const </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/dda/vp__codec__configuration_8cc_source.html#l00084">vp_codec_configuration.cc:84</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1BufferWriter_html_afd1449487750c41331a2d91ac417f115"><div class="ttname"><a href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115">edash_packager::media::BufferWriter::AppendInt</a></div><div class="ttdeci">void AppendInt(uint8_t v)</div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dd3/buffer__writer_8cc_source.html#l00025">buffer_writer.cc:25</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1BitReader_html"><div class="ttname"><a href="../../df/db4/classedash__packager_1_1media_1_1BitReader.html">edash_packager::media::BitReader</a></div><div class="ttdoc">A class to read bit streams. </div><div class="ttdef"><b>Definition:</b> <a href="../../d4/dd3/bit__reader_8h_source.html#l00017">bit_reader.h:17</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1VPCodecConfiguration_html_a56c474703175b9a323ef24553da42704"><div class="ttname"><a href="../../d7/d85/classedash__packager_1_1media_1_1VPCodecConfiguration.html#a56c474703175b9a323ef24553da42704">edash_packager::media::VPCodecConfiguration::GetCodecString</a></div><div class="ttdeci">std::string GetCodecString(VideoCodec codec) const </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/dda/vp__codec__configuration_8cc_source.html#l00099">vp_codec_configuration.cc:99</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1VPCodecConfiguration_html_a3428d45e1b7c31fc6dd3bef0c8dc46c7"><div class="ttname"><a href="../../d7/d85/classedash__packager_1_1media_1_1VPCodecConfiguration.html#a3428d45e1b7c31fc6dd3bef0c8dc46c7">edash_packager::media::VPCodecConfiguration::Parse</a></div><div class="ttdeci">bool Parse(const std::vector&lt; uint8_t &gt; &amp;data)</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/dda/vp__codec__configuration_8cc_source.html#l00065">vp_codec_configuration.cc:65</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1BufferWriter_html"><div class="ttname"><a href="../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html">edash_packager::media::BufferWriter</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dd2/buffer__writer_8h_source.html#l00022">buffer_writer.h:22</a></div></div>
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