shaka-packager/docs/d7/d1e/subsample__generator_8cc_so...

97 lines
66 KiB
HTML
Raw Normal View History

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.13"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Shaka Packager SDK: packager/media/crypto/subsample_generator.cc Source File</title>
<link href="../../tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../jquery.js"></script>
<script type="text/javascript" src="../../dynsections.js"></script>
<link href="../../search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../search/searchdata.js"></script>
<script type="text/javascript" src="../../search/search.js"></script>
<link href="../../doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">Shaka Packager SDK
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.13 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "../../search",false,'Search');
</script>
<script type="text/javascript" src="../../menudata.js"></script>
<script type="text/javascript" src="../../menu.js"></script>
<script type="text/javascript">
$(function() {
initMenu('../../',true,false,'search.php','Search');
$(document).ready(function() { init_search(); });
});
</script>
<div id="main-nav"></div>
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="../../dir_3f8eec2fc361645de4b1ec14c19fffc7.html">packager</a></li><li class="navelem"><a class="el" href="../../dir_f99dae54fe7170f791f339b952d5067a.html">media</a></li><li class="navelem"><a class="el" href="../../dir_aa847bee70cdde822696c7e33a504139.html">crypto</a></li> </ul>
</div>
</div><!-- top -->
<div class="header">
<div class="headertitle">
<div class="title">subsample_generator.cc</div> </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2018 Google LLC. 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/crypto/subsample_generator.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 &lt;algorithm&gt;</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &lt;limits&gt;</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/decrypt_config.h&quot;</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/video_stream_info.h&quot;</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &quot;packager/media/codecs/av1_parser.h&quot;</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &quot;packager/media/codecs/video_slice_header_parser.h&quot;</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#include &quot;packager/media/codecs/vp8_parser.h&quot;</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#include &quot;packager/media/codecs/vp9_parser.h&quot;</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="keyword">namespace </span><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="keyword">namespace </span>media {</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="keyword">namespace </span>{</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="keyword">const</span> <span class="keywordtype">size_t</span> kAesBlockSize = 16u;</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;uint8_t GetNaluLengthSize(<span class="keyword">const</span> StreamInfo&amp; stream_info) {</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; <span class="keywordflow">if</span> (stream_info.stream_type() != kStreamVideo)</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; <spa
<div class="ttc" id="classshaka_1_1media_1_1StreamInfo_html"><div class="ttname"><a href="../../d5/db1/classshaka_1_1media_1_1StreamInfo.html">shaka::media::StreamInfo</a></div><div class="ttdoc">Abstract class holds stream information. </div><div class="ttdef"><b>Definition:</b> <a href="../../d8/daa/stream__info_8h_source.html#l00062">stream_info.h:62</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1Nalu_html_a63f091b3dbe862fd4519c1b374dfc937"><div class="ttname"><a href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a63f091b3dbe862fd4519c1b374dfc937">shaka::media::Nalu::is_video_slice</a></div><div class="ttdeci">bool is_video_slice() const</div><div class="ttdoc">Slice data partition NALs are not considered as slice NALs. </div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00117">nalu_reader.h:117</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1NaluReader_html"><div class="ttname"><a href="../../db/d86/classshaka_1_1media_1_1NaluReader.html">shaka::media::NaluReader</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00149">nalu_reader.h:149</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1VPxFrameInfo_html"><div class="ttname"><a href="../../d0/d11/structshaka_1_1media_1_1VPxFrameInfo.html">shaka::media::VPxFrameInfo</a></div><div class="ttdef"><b>Definition:</b> <a href="../../df/d8a/vpx__parser_8h_source.html#l00019">vpx_parser.h:19</a></div></div>
<div class="ttc" id="namespaceshaka_html"><div class="ttname"><a href="../../d8/daf/namespaceshaka.html">shaka</a></div><div class="ttdoc">All the methods that are virtual are virtual for mocking. </div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d15/gflags__hex__bytes_8cc_source.html#l00011">gflags_hex_bytes.cc:11</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1Nalu_html_a835d8f01a8ab94887ee3dce3b5d3721e"><div class="ttname"><a href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a835d8f01a8ab94887ee3dce3b5d3721e">shaka::media::Nalu::header_size</a></div><div class="ttdeci">uint64_t header_size() const</div><div class="ttdoc">The size of the header, e.g. 1 for H.264. </div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00100">nalu_reader.h:100</a></div></div>
<div class="ttc" id="classshaka_1_1Status_html"><div class="ttname"><a href="../../d2/d20/classshaka_1_1Status.html">shaka::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00110">status.h:110</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1AV1Parser_1_1Tile_html"><div class="ttname"><a href="../../d7/d36/structshaka_1_1media_1_1AV1Parser_1_1Tile.html">shaka::media::AV1Parser::Tile</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d18/av1__parser_8h_source.html#l00024">av1_parser.h:24</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1SubsampleGenerator_html_a8d4d840fd11c1c89b8ed03cdf076c64e"><div class="ttname"><a href="../../d0/d9f/classshaka_1_1media_1_1SubsampleGenerator.html#a8d4d840fd11c1c89b8ed03cdf076c64e">shaka::media::SubsampleGenerator::GenerateSubsamples</a></div><div class="ttdeci">virtual Status GenerateSubsamples(const uint8_t *frame, size_t frame_size, std::vector&lt; SubsampleEntry &gt; *subsamples)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d1e/subsample__generator_8cc_source.html#l00213">subsample_generator.cc:213</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1H264VideoSliceHeaderParser_html"><div class="ttname"><a href="../../da/df0/classshaka_1_1media_1_1H264VideoSliceHeaderParser.html">shaka::media::H264VideoSliceHeaderParser</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d33/video__slice__header__parser_8h_source.html#l00044">video_slice_header_parser.h:44</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1NaluReader_html_ae051f1f92d84acfcd4cc159d972d647a"><div class="ttname"><a href="../../db/d86/classshaka_1_1media_1_1NaluReader.html#ae051f1f92d84acfcd4cc159d972d647a">shaka::media::NaluReader::Advance</a></div><div class="ttdeci">Result Advance(Nalu *nalu)</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df5/nalu__reader_8cc_source.html#l00241">nalu_reader.cc:241</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1VP9Parser_html"><div class="ttname"><a href="../../db/d5a/classshaka_1_1media_1_1VP9Parser.html">shaka::media::VP9Parser</a></div><div class="ttdoc">Class to parse a vp9 bit stream. </div><div class="ttdef"><b>Definition:</b> <a href="../../df/d8a/vp9__parser_8h_source.html#l00020">vp9_parser.h:20</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1Nalu_html"><div class="ttname"><a href="../../d6/dff/classshaka_1_1media_1_1Nalu.html">shaka::media::Nalu</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00027">nalu_reader.h:27</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1SubsampleGenerator_html_a1674b4a68974db06ad4efa9a9b699a46"><div class="ttname"><a href="../../d0/d9f/classshaka_1_1media_1_1SubsampleGenerator.html#a1674b4a68974db06ad4efa9a9b699a46">shaka::media::SubsampleGenerator::SubsampleGenerator</a></div><div class="ttdeci">SubsampleGenerator(bool vp9_subsample_encryption)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d1e/subsample__generator_8cc_source.html#l00123">subsample_generator.cc:123</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1Nalu_html_a7a3b4358f56619fc63fe74525f4eb92b"><div class="ttname"><a href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#a7a3b4358f56619fc63fe74525f4eb92b">shaka::media::Nalu::type</a></div><div class="ttdeci">int type() const</div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00113">nalu_reader.h:113</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1SubsampleGenerator_html_ac4478f9099344a05be5b9b3e4e209817"><div class="ttname"><a href="../../d0/d9f/classshaka_1_1media_1_1SubsampleGenerator.html#ac4478f9099344a05be5b9b3e4e209817">shaka::media::SubsampleGenerator::Initialize</a></div><div class="ttdeci">virtual Status Initialize(FourCC protection_scheme, const StreamInfo &amp;stream_info)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d1e/subsample__generator_8cc_source.html#l00128">subsample_generator.cc:128</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1AV1Parser_html"><div class="ttname"><a href="../../db/dc7/classshaka_1_1media_1_1AV1Parser.html">shaka::media::AV1Parser</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/d18/av1__parser_8h_source.html#l00022">av1_parser.h:22</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1Nalu_html_abe782e4298e7add8ce0a1c33e66cfcdb"><div class="ttname"><a href="../../d6/dff/classshaka_1_1media_1_1Nalu.html#abe782e4298e7add8ce0a1c33e66cfcdb">shaka::media::Nalu::payload_size</a></div><div class="ttdeci">uint64_t payload_size() const</div><div class="ttdoc">Size of this Nalu minus header_size(). </div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d87/nalu__reader_8h_source.html#l00102">nalu_reader.h:102</a></div></div>
</div><!-- fragment --></div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Tue Jan 21 2020 16:58:51 for Shaka Packager SDK by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="../../doxygen.png" alt="doxygen"/>
</a> 1.8.13
</small></address>
</body>
</html>