2015-10-16 00:33:37 +00:00
<!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 1.8.6" / >
< title > DASH Media Packaging SDK: media/formats/mp4/key_rotation_fragmenter.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/search.js" > < / script >
< script type = "text/javascript" >
$(document).ready(function() { searchBox.OnSelectItem(0); });
< / 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 style = "padding-left: 0.5em;" >
< div id = "projectname" > DASH Media Packaging SDK
< / div >
< / td >
< / tr >
< / tbody >
< / table >
< / div >
<!-- end header part -->
<!-- Generated by Doxygen 1.8.6 -->
< script type = "text/javascript" >
var searchBox = new SearchBox("searchBox", "../../search",false,'Search');
< / script >
< div id = "navrow1" class = "tabs" >
< ul class = "tablist" >
< li > < a href = "../../index.html" > < span > Main  Page< / span > < / a > < / li >
< li > < a href = "../../namespaces.html" > < span > Namespaces< / span > < / a > < / li >
< li > < a href = "../../annotated.html" > < span > Classes< / span > < / a > < / li >
< li class = "current" > < a href = "../../files.html" > < span > Files< / span > < / a > < / li >
< li >
< div id = "MSearchBox" class = "MSearchBoxInactive" >
< span class = "left" >
< img id = "MSearchSelect" src = "../../search/mag_sel.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
< input type = "text" id = "MSearchField" value = "Search" accesskey = "S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
< / span > < span class = "right" >
< a id = "MSearchClose" href = "javascript:searchBox.CloseResultsWindow()" > < img id = "MSearchCloseImg" border = "0" src = "../../search/close.png" alt = "" / > < / a >
< / span >
< / div >
< / li >
< / ul >
< / div >
< div id = "navrow2" class = "tabs2" >
< ul class = "tablist" >
< li > < a href = "../../files.html" > < span > File  List< / span > < / a > < / li >
< / ul >
< / div >
<!-- window showing the filter options -->
< div id = "MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
2016-05-11 18:03:07 +00:00
< a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(0)" > < span class = "SelectionMark" >   < / span > All< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(1)" > < span class = "SelectionMark" >   < / span > Classes< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(2)" > < span class = "SelectionMark" >   < / span > Namespaces< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(3)" > < span class = "SelectionMark" >   < / span > Functions< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(4)" > < span class = "SelectionMark" >   < / span > Variables< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(5)" > < span class = "SelectionMark" >   < / span > Typedefs< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(6)" > < span class = "SelectionMark" >   < / span > Enumerations< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(7)" > < span class = "SelectionMark" >   < / span > Enumerator< / a > < / div >
2015-10-16 00:33:37 +00:00
<!-- 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_39dc0668bd5a501998f94e8b4e546c71.html" > media< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_65f7acfa8cf3a5f1edc11faa2428b914.html" > formats< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_3e9291fd7a18fdecc763294cb2628910.html" > mp4< / a > < / li > < / ul >
< / div >
< / div > <!-- top -->
< div class = "header" >
< div class = "headertitle" >
< div class = "title" > key_rotation_fragmenter.cc< / div > < / div >
< / div > <!-- header -->
< div class = "contents" >
< div class = "fragment" > < div class = "line" > < a name = "l00001" > < / a > < span class = "lineno" > 1< / span >   < span class = "comment" > // Copyright 2014 Google Inc. All rights reserved.< / span > < / div >
< div class = "line" > < a name = "l00002" > < / a > < span class = "lineno" > 2< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < 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 >   < 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 >   < 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 >   < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "preprocessor" > #include " packager/media/formats/mp4/key_rotation_fragmenter.h" < / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "preprocessor" > #include " packager/media/base/aes_encryptor.h" < / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "preprocessor" > #include " packager/media/formats/mp4/box_definitions.h" < / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < / div >
2016-05-24 23:43:16 +00:00
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "keyword" > namespace < / span > shaka {< / div >
2015-10-16 00:33:37 +00:00
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "keyword" > namespace < / span > mp4 {< / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "keyword" > namespace < / span > {< / div >
2016-03-11 18:47:22 +00:00
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > bool< / span > kInitialEncryptionInfo = < span class = "keyword" > true< / span > ;< / div >
2015-10-16 00:33:37 +00:00
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < / div >
2017-01-26 03:38:47 +00:00
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > < a class = "line" href = "../../d2/d29/classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter.html#ab2ad830e0c019f5cdd7f3389ce536a6d" > 20< / a > < / span >   < a class = "code" href = "../../d2/d29/classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter.html#ab2ad830e0c019f5cdd7f3389ce536a6d" > KeyRotationFragmenter::KeyRotationFragmenter< / a > (< a class = "code" href = "../../d9/d1f/structshaka_1_1media_1_1mp4_1_1MovieFragment.html" > MovieFragment< / a > * moof,< / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   std::shared_ptr< StreamInfo> info,< / div >
2016-05-24 23:43:16 +00:00
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < a class = "code" href = "../../df/d7b/structshaka_1_1media_1_1mp4_1_1TrackFragment.html" > TrackFragment< / a > * traf,< / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < a class = "code" href = "../../d1/d1f/classshaka_1_1media_1_1KeySource.html" > KeySource< / a > * encryption_key_source,< / div >
2016-02-22 21:58:55 +00:00
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   KeySource::TrackType track_type,< / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   int64_t crypto_period_duration,< / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   int64_t clear_time,< / div >
2016-04-12 23:13:12 +00:00
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   FourCC protection_scheme,< / div >
2016-04-15 19:07:50 +00:00
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   uint8_t crypt_byte_block,< / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   uint8_t skip_byte_block,< / div >
2016-05-24 23:43:16 +00:00
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < a class = "code" href = "../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html" > MuxerListener< / a > * muxer_listener)< / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   : < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html" > EncryptingFragmenter< / a > (info,< / div >
2016-04-15 19:07:50 +00:00
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   traf,< / div >
2016-08-19 00:58:26 +00:00
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   std::unique_ptr< < a class = "code" href = "../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > > (new < a class = "code" href = "../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > ()),< / div >
2016-04-15 19:07:50 +00:00
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   clear_time,< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   protection_scheme,< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   crypt_byte_block,< / div >
2016-07-11 20:48:08 +00:00
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   skip_byte_block,< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   muxer_listener),< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   moof_(moof),< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   encryption_key_source_(encryption_key_source),< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   track_type_(track_type),< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   crypto_period_duration_(crypto_period_duration),< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   prev_crypto_period_index_(-1),< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   muxer_listener_(muxer_listener) {< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   DCHECK(moof);< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   DCHECK(encryption_key_source);< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   }< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   KeyRotationFragmenter::~KeyRotationFragmenter() {}< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > < a class = "line" href = "../../d2/d29/classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter.html#a3bdb3a237cb8eb1484ee98e195d290a7" > 51< / a > < / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d2/d29/classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter.html#a3bdb3a237cb8eb1484ee98e195d290a7" > KeyRotationFragmenter::PrepareFragmentForEncryption< / a > (< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < span class = "keywordtype" > bool< / span > enable_encryption) {< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < span class = "keywordtype" > bool< / span > need_to_refresh_encryptor = !encryptor();< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < / div >
2016-08-18 20:58:33 +00:00
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   int64_t current_crypto_period_index =< / div >
2016-07-11 20:48:08 +00:00
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   traf()-> decode_time.decode_time / crypto_period_duration_;< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "keywordflow" > if< / span > (current_crypto_period_index != prev_crypto_period_index_) {< / div >
2016-08-19 00:58:26 +00:00
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   std::unique_ptr< EncryptionKey> encryption_key(< span class = "keyword" > new< / span > < a class = "code" href = "../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > ());< / div >
2016-07-11 20:48:08 +00:00
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > status = encryption_key_source_-> < a class = "code" href = "../../d1/d1f/classshaka_1_1media_1_1KeySource.html#a18806b962c858e35ed07753687605b16" > GetCryptoPeriodKey< / a > (< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   current_crypto_period_index, track_type_, encryption_key.get());< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "keywordflow" > if< / span > (encryption_key-> iv.empty()) {< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   < span class = "keywordflow" > if< / span > (!< a class = "code" href = "../../df/d87/classshaka_1_1media_1_1AesCryptor.html#a40d9a82d274d6fbaee5346328f11dedd" > AesCryptor::GenerateRandomIv< / a > (protection_scheme(),< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   & encryption_key-> iv)) {< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > (error::INTERNAL_ERROR, < span class = "stringliteral" > " Failed to generate random iv." < / span > );< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   }< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   }< / div >
2016-08-19 00:58:26 +00:00
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   set_encryption_key(std::move(encryption_key));< / div >
2016-07-11 20:48:08 +00:00
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   prev_crypto_period_index_ = current_crypto_period_index;< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   need_to_refresh_encryptor = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   }< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   DCHECK(encryption_key());< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < span class = "keyword" > const< / span > std::vector< ProtectionSystemSpecificInfo> & system_info =< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   encryption_key()-> key_system_info;< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   moof_-> pssh.resize(system_info.size());< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < system_info.size(); i++) {< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   moof_-> pssh[i].raw_box = system_info[i].CreateBox();< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   }< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < span class = "keywordflow" > if< / span > (muxer_listener_) {< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   muxer_listener_-> < a class = "code" href = "../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html#ab521acca727bbe01aa15c751325c0001" > OnEncryptionInfoReady< / a > (< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   !kInitialEncryptionInfo, protection_scheme(), encryption_key()-> key_id,< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   encryption_key()-> iv, encryption_key()-> key_system_info);< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   }< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   < / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < span class = "comment" > // Skip the following steps if the current fragment is not going to be< / span > < / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "comment" > // encrypted. ' pssh' box needs to be included in the fragment, which is< / span > < / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   < span class = "comment" > // performed above, regardless of whether the fragment is encrypted. This is< / span > < / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < span class = "comment" > // necessary for two reasons: 1) Requesting keys before reaching encrypted< / span > < / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < span class = "comment" > // content avoids playback delay due to license requests; 2) In Chrome, CDM< / span > < / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "comment" > // must be initialized before starting the playback and CDM can only be< / span > < / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   < span class = "comment" > // initialized with a valid ' pssh' .< / span > < / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < span class = "keywordflow" > if< / span > (!enable_encryption) {< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   DCHECK(!encryptor());< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   }< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   < / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   < span class = "keywordflow" > if< / span > (need_to_refresh_encryptor) {< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   < a class = "code" href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > Status< / a > status = < a class = "code" href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a4220479b2dd98b462ff4dd4afcf56d0e" > CreateEncryptor< / a > ();< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   }< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   DCHECK(encryptor());< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   < / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < span class = "comment" > // Key rotation happens in fragment boundary only in this implementation,< / span > < / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < span class = "comment" > // i.e. there is at most one key for the fragment. So there should be only< / span > < / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < span class = "comment" > // one entry in SampleGroupDescription box and one entry in SampleToGroup box.< / span > < / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   < span class = "comment" > // Fill in SampleGroupDescription box information.< / span > < / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   traf()-> sample_group_descriptions.resize(< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   traf()-> sample_group_descriptions.size() + 1);< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < a class = "code" href = "../../d7/d01/structshaka_1_1media_1_1mp4_1_1SampleGroupDescription.html" > SampleGroupDescription< / a > & sample_group_description =< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   traf()-> sample_group_descriptions.back();< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   sample_group_description.grouping_type = FOURCC_seig;< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   sample_group_description.cenc_sample_encryption_info_entries.resize(1);< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < a class = "code" href = "../../d8/dd6/structshaka_1_1media_1_1mp4_1_1CencSampleEncryptionInfoEntry.html" > CencSampleEncryptionInfoEntry< / a > & sample_group_entry =< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   sample_group_description.cenc_sample_encryption_info_entries.back();< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   sample_group_entry.is_protected = 1;< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "keywordflow" > if< / span > (protection_scheme() == FOURCC_cbcs) {< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   < span class = "comment" > // For ' cbcs' scheme, Constant IVs SHALL be used.< / span > < / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   sample_group_entry.per_sample_iv_size = 0;< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   sample_group_entry.constant_iv = encryptor()-> < a class = "code" href = "../../df/d87/classshaka_1_1media_1_1AesCryptor.html#a96dde16f12a82a563c77f6d5522571f3" > iv< / a > ();< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   } < span class = "keywordflow" > else< / span > {< / div >
2016-08-18 20:58:33 +00:00
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   sample_group_entry.per_sample_iv_size =< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < span class = "keyword" > static_cast< < / span > uint8_t< span class = "keyword" > > < / span > (encryptor()-> < a class = "code" href = "../../df/d87/classshaka_1_1media_1_1AesCryptor.html#a96dde16f12a82a563c77f6d5522571f3" > iv< / a > ().size());< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   }< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   sample_group_entry.crypt_byte_block = crypt_byte_block();< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   sample_group_entry.skip_byte_block = skip_byte_block();< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   sample_group_entry.key_id = encryption_key()-> key_id;< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   }< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   < / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   } < span class = "comment" > // namespace mp4< / span > < / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   } < span class = "comment" > // namespace shaka< / span > < / div >
2016-05-24 23:43:16 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1MuxerListener_html_ab521acca727bbe01aa15c751325c0001" > < div class = "ttname" > < a href = "../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html#ab521acca727bbe01aa15c751325c0001" > shaka::media::MuxerListener::OnEncryptionInfoReady< / a > < / div > < div class = "ttdeci" > virtual void OnEncryptionInfoReady(bool is_initial_encryption_info, FourCC protection_scheme, const std::vector< uint8_t > & key_id, const std::vector< uint8_t > & iv, const std::vector< ProtectionSystemSpecificInfo > & key_system_info)=0< / div > < / div >
2016-05-26 00:03:16 +00:00
< div class = "ttc" id = "structshaka_1_1media_1_1mp4_1_1TrackFragment_html" > < div class = "ttname" > < a href = "../../df/d7b/structshaka_1_1media_1_1mp4_1_1TrackFragment.html" > shaka::media::mp4::TrackFragment< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d5/d7b/box__definitions_8h_source.html#l00728" > box_definitions.h:728< / a > < / div > < / div >
2016-05-24 23:43:16 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1KeySource_html_a18806b962c858e35ed07753687605b16" > < div class = "ttname" > < a href = "../../d1/d1f/classshaka_1_1media_1_1KeySource.html#a18806b962c858e35ed07753687605b16" > shaka::media::KeySource::GetCryptoPeriodKey< / a > < / div > < div class = "ttdeci" > virtual Status GetCryptoPeriodKey(uint32_t crypto_period_index, TrackType track_type, EncryptionKey *key)=0< / div > < / div >
2017-01-26 03:38:47 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter_html_ab2ad830e0c019f5cdd7f3389ce536a6d" > < div class = "ttname" > < a href = "../../d2/d29/classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter.html#ab2ad830e0c019f5cdd7f3389ce536a6d" > shaka::media::mp4::KeyRotationFragmenter::KeyRotationFragmenter< / a > < / div > < div class = "ttdeci" > KeyRotationFragmenter(MovieFragment *moof, std::shared_ptr< StreamInfo > info, TrackFragment *traf, KeySource *encryption_key_source, KeySource::TrackType track_type, int64_t crypto_period_duration, int64_t clear_time, FourCC protection_scheme, uint8_t crypt_byte_block, uint8_t skip_byte_block, MuxerListener *muxer_listener)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d9/d15/key__rotation__fragmenter_8cc_source.html#l00020" > key_rotation_fragmenter.cc:20< / a > < / div > < / div >
2016-05-24 23:43:16 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1AesCryptor_html_a96dde16f12a82a563c77f6d5522571f3" > < div class = "ttname" > < a href = "../../df/d87/classshaka_1_1media_1_1AesCryptor.html#a96dde16f12a82a563c77f6d5522571f3" > shaka::media::AesCryptor::iv< / a > < / div > < div class = "ttdeci" > const std::vector< uint8_t > & iv() const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d0/d42/aes__cryptor_8h_source.html#l00081" > aes_cryptor.h:81< / a > < / div > < / div >
2016-08-19 00:58:26 +00:00
< div class = "ttc" id = "structshaka_1_1media_1_1EncryptionKey_html" > < div class = "ttname" > < a href = "../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html" > shaka::media::EncryptionKey< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dc/d3f/key__source_8h_source.html#l00019" > key_source.h:19< / a > < / div > < / div >
2016-09-01 17:53:10 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1AesCryptor_html_a40d9a82d274d6fbaee5346328f11dedd" > < div class = "ttname" > < a href = "../../df/d87/classshaka_1_1media_1_1AesCryptor.html#a40d9a82d274d6fbaee5346328f11dedd" > shaka::media::AesCryptor::GenerateRandomIv< / a > < / div > < div class = "ttdeci" > static bool GenerateRandomIv(FourCC protection_scheme, std::vector< uint8_t > *iv)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d55/aes__cryptor_8cc_source.html#l00107" > aes_cryptor.cc:107< / a > < / div > < / div >
2016-05-26 00:03:16 +00:00
< div class = "ttc" id = "structshaka_1_1media_1_1mp4_1_1MovieFragment_html" > < div class = "ttname" > < a href = "../../d9/d1f/structshaka_1_1media_1_1mp4_1_1MovieFragment.html" > shaka::media::mp4::MovieFragment< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d5/d7b/box__definitions_8h_source.html#l00742" > box_definitions.h:742< / a > < / div > < / div >
2017-01-26 03:38:47 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html" > < div class = "ttname" > < a href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html" > shaka::media::mp4::EncryptingFragmenter< / a > < / div > < div class = "ttdoc" > EncryptingFragmenter generates MP4 fragments with sample encrypted. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/dcb/encrypting__fragmenter_8h_source.html#l00027" > encrypting_fragmenter.h:27< / a > < / div > < / div >
2017-01-26 19:23:57 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1Status_html" > < div class = "ttname" > < a href = "../../d0/d93/classshaka_1_1media_1_1Status.html" > shaka::media::Status< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/d13/status_8h_source.html#l00079" > status.h:79< / a > < / div > < / div >
2016-05-26 00:03:16 +00:00
< div class = "ttc" id = "structshaka_1_1media_1_1mp4_1_1CencSampleEncryptionInfoEntry_html" > < div class = "ttname" > < a href = "../../d8/dd6/structshaka_1_1media_1_1mp4_1_1CencSampleEncryptionInfoEntry.html" > shaka::media::mp4::CencSampleEncryptionInfoEntry< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d5/d7b/box__definitions_8h_source.html#l00479" > box_definitions.h:479< / a > < / div > < / div >
2017-01-06 19:31:11 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a4220479b2dd98b462ff4dd4afcf56d0e" > < div class = "ttname" > < a href = "../../dc/df3/classshaka_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a4220479b2dd98b462ff4dd4afcf56d0e" > shaka::media::mp4::EncryptingFragmenter::CreateEncryptor< / a > < / div > < div class = "ttdeci" > Status CreateEncryptor()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d41/encrypting__fragmenter_8cc_source.html#l00209" > encrypting_fragmenter.cc:209< / a > < / div > < / div >
2016-05-26 00:03:16 +00:00
< div class = "ttc" id = "structshaka_1_1media_1_1mp4_1_1SampleGroupDescription_html" > < div class = "ttname" > < a href = "../../d7/d01/structshaka_1_1media_1_1mp4_1_1SampleGroupDescription.html" > shaka::media::mp4::SampleGroupDescription< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d5/d7b/box__definitions_8h_source.html#l00508" > box_definitions.h:508< / a > < / div > < / div >
2016-08-19 00:58:26 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1KeySource_html" > < div class = "ttname" > < a href = "../../d1/d1f/classshaka_1_1media_1_1KeySource.html" > shaka::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#l00030" > key_source.h:30< / a > < / div > < / div >
2016-07-11 20:48:08 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter_html_a3bdb3a237cb8eb1484ee98e195d290a7" > < div class = "ttname" > < a href = "../../d2/d29/classshaka_1_1media_1_1mp4_1_1KeyRotationFragmenter.html#a3bdb3a237cb8eb1484ee98e195d290a7" > shaka::media::mp4::KeyRotationFragmenter::PrepareFragmentForEncryption< / a > < / div > < div class = "ttdeci" > Status PrepareFragmentForEncryption(bool enable_encryption) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d9/d15/key__rotation__fragmenter_8cc_source.html#l00051" > key_rotation_fragmenter.cc:51< / a > < / div > < / div >
2016-05-24 23:43:16 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1MuxerListener_html" > < div class = "ttname" > < a href = "../../dd/d7a/classshaka_1_1media_1_1MuxerListener.html" > shaka::media::MuxerListener< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../de/dfa/muxer__listener_8h_source.html#l00030" > muxer_listener.h:30< / a > < / div > < / div >
2015-10-16 00:33:37 +00:00
< / div > <!-- fragment --> < / div > <!-- contents -->
<!-- start footer part -->
< hr class = "footer" / > < address class = "footer" > < small >
2017-02-11 00:58:51 +00:00
Generated on Sat Feb 11 2017 00:58:45 for DASH Media Packaging SDK by   < a href = "http://www.doxygen.org/index.html" >
2015-10-16 00:33:37 +00:00
< img class = "footer" src = "../../doxygen.png" alt = "doxygen" / >
< / a > 1.8.6
< / small > < / address >
< / body >
< / html >
