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< li class = "navelem" > < a class = "el" href = "../../dir_39dc0668bd5a501998f94e8b4e546c71.html" > media< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_c6ada2450b25ab5438a4dba6c9b890af.html" > base< / a > < / li > < / ul >
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< div class = "title" > key_source.cc< / div > < / div >
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< 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/base/key_source.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/base/strings/string_number_conversions.h" < / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "preprocessor" > #include " packager/media/base/aes_encryptor.h" < / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "preprocessor" > #include " packager/media/base/buffer_writer.h" < / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "keyword" > const< / span > uint8_t kWidevineSystemId[] = {0xed, 0xef, 0x8b, 0xa9, 0x79, 0xd6,< / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   0x4a, 0xce, 0xa3, 0xc8, 0x27, 0xdc,< / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   0xd5, 0x1d, 0x21, 0xed};< / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "comment" > // TODO(kqyang): Consider making it configurable.< / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > kDefaultUUID[] = < span class = "stringliteral" > " edef8ba9-79d6-4ace-a3c8-27dcd51d21ed" < / span > ;< / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > char< / span > kDefaultSystemName[] = < span class = "stringliteral" > " " < / span > ;< / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "keyword" > namespace < / span > edash_packager {< / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   EncryptionKey::EncryptionKey() {}< / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   EncryptionKey::~EncryptionKey() {}< / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   KeySource::~KeySource() {}< / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a4020839c22a550bf71d891bf55087e0b" > 30< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a4020839c22a550bf71d891bf55087e0b" > KeySource::FetchKeys< / a > (< span class = "keyword" > const< / span > std::vector< uint8_t> & content_id,< / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < span class = "keyword" > const< / span > std::string& policy) {< / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "comment" > // Do nothing for fixed key encryption/decryption.< / span > < / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   }< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#aff319f4d17ed480243469eb8af5fa915" > 36< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a4020839c22a550bf71d891bf55087e0b" > KeySource::FetchKeys< / a > (< span class = "keyword" > const< / span > std::vector< uint8_t> & pssh_data) {< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < span class = "comment" > // Do nothing for fixed key encryption/decryption.< / span > < / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   }< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   < / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a68de1e9682273c2dc9b8db04718d426c" > 41< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a4020839c22a550bf71d891bf55087e0b" > KeySource::FetchKeys< / a > (uint32_t asset_id) {< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < span class = "comment" > // Do nothing for fixed key encryption/decryption.< / span > < / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   }< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a49ccfe7a61c36ac9818482a7892915d3" > 46< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a49ccfe7a61c36ac9818482a7892915d3" > KeySource::GetKey< / a > (TrackType track_type, < a class = "code" href = "../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > * key) {< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   DCHECK(key);< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   DCHECK(encryption_key_);< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   *key = *encryption_key_;< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   }< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a2d44267b238a221bb8a7d2bc1bf68ea2" > 53< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a49ccfe7a61c36ac9818482a7892915d3" > KeySource::GetKey< / a > (< span class = "keyword" > const< / span > std::vector< uint8_t> & key_id,< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < a class = "code" href = "../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > * key) {< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   DCHECK(key);< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   DCHECK(encryption_key_);< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "keywordflow" > if< / span > (key_id != encryption_key_-> key_id) {< / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > (error::NOT_FOUND, std::string(< span class = "stringliteral" > " Key for key ID " < / span > ) +< / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   base::HexEncode(& key_id[0], key_id.size()) +< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "stringliteral" > " was not found." < / span > );< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   }< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   *key = *encryption_key_;< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   }< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   < / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a349381b866a37df15a931980636621ac" > 66< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a349381b866a37df15a931980636621ac" > KeySource::GetCryptoPeriodKey< / a > (uint32_t crypto_period_index,< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   TrackType track_type,< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < a class = "code" href = "../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > * key) {< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   *key = *encryption_key_;< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < span class = "comment" > // A naive key rotation algorithm is implemented here by left rotating the< / span > < / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < span class = "comment" > // key, key_id and pssh. Note that this implementation is only intended for< / span > < / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   < span class = "comment" > // testing purpose. The actual key rotation algorithm can be much more< / span > < / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < span class = "comment" > // complicated.< / span > < / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   LOG(WARNING)< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < < < span class = "stringliteral" > " This naive key rotation algorithm should not be used in production." < / span > ;< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   std::rotate(key-> key_id.begin(),< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   key-> key_id.begin() + (crypto_period_index % key-> key_id.size()),< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   key-> key_id.end());< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   std::rotate(key-> key.begin(),< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   key-> key.begin() + (crypto_period_index % key-> key.size()),< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   key-> key.end());< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > kPsshHeaderSize = 32u;< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   std::vector< uint8_t> pssh_data(key-> pssh.begin() + kPsshHeaderSize,< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   key-> pssh.end());< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   std::rotate(pssh_data.begin(),< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   pssh_data.begin() + (crypto_period_index % pssh_data.size()),< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   pssh_data.end());< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   key-> pssh = < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab5478505cfdb660fa6c680819f17f239" > PsshBoxFromPsshData< / a > (pssh_data);< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   }< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#afbb7d084395a1426eb0143ae8357b2fc" > 92< / a > < / span >   std::string < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#afbb7d084395a1426eb0143ae8357b2fc" > KeySource::UUID< / a > () {< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "keywordflow" > return< / span > kDefaultUUID;< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   }< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#aa73dacef997e7700b8669bb2db5f8f31" > 96< / a > < / span >   std::string < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#aa73dacef997e7700b8669bb2db5f8f31" > KeySource::SystemName< / a > () {< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "keywordflow" > return< / span > kDefaultSystemName;< / 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" > < a class = "line" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab05172d89513c0d3627502c9cff4535f" > 100< / a > < / span >   scoped_ptr< KeySource> < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab05172d89513c0d3627502c9cff4535f" > KeySource::CreateFromHexStrings< / a > (< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   < span class = "keyword" > const< / span > std::string& key_id_hex,< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < span class = "keyword" > const< / span > std::string& key_hex,< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   < span class = "keyword" > const< / span > std::string& pssh_data_hex,< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   < span class = "keyword" > const< / span > std::string& iv_hex) {< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   scoped_ptr< EncryptionKey> encryption_key(< span class = "keyword" > new< / span > < a class = "code" href = "../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > ());< / 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 = "keywordflow" > if< / span > (!base::HexStringToBytes(key_id_hex, & encryption_key-> key_id)) {< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Cannot parse key_id_hex " < / span > < < key_id_hex;< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < span class = "keywordflow" > return< / span > scoped_ptr< KeySource> ();< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   }< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < span class = "keywordflow" > if< / span > (!base::HexStringToBytes(key_hex, & encryption_key-> key)) {< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Cannot parse key_hex " < / span > < < key_hex;< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   < span class = "keywordflow" > return< / span > scoped_ptr< KeySource> ();< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   }< / 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 >   std::vector< uint8_t> pssh_data;< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < span class = "keywordflow" > if< / span > (!pssh_data_hex.empty() & & < / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   !base::HexStringToBytes(pssh_data_hex, & pssh_data)) {< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Cannot parse pssh_hex " < / span > < < pssh_data_hex;< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "keywordflow" > return< / span > scoped_ptr< KeySource> ();< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   }< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   < / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < span class = "keywordflow" > if< / span > (!iv_hex.empty()) {< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   < span class = "keywordflow" > if< / span > (!base::HexStringToBytes(iv_hex, & encryption_key-> iv)) {< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Cannot parse iv_hex " < / span > < < iv_hex;< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < span class = "keywordflow" > return< / span > scoped_ptr< KeySource> ();< / 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 >   }< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   < / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   encryption_key-> pssh = < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab5478505cfdb660fa6c680819f17f239" > PsshBoxFromPsshData< / a > (pssh_data);< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < span class = "keywordflow" > return< / span > scoped_ptr< KeySource> (< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "keyword" > new< / span > < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html" > KeySource< / a > (encryption_key.Pass()));< / 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" > < a class = "line" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab15ba8121f76e0945d4f10d722da5cc8" > 136< / a > < / span >   KeySource::TrackType < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab15ba8121f76e0945d4f10d722da5cc8" > KeySource::GetTrackTypeFromString< / a > (< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   < span class = "keyword" > const< / span > std::string& track_type_string) {< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   < span class = "keywordflow" > if< / span > (track_type_string == < span class = "stringliteral" > " SD" < / span > )< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   < span class = "keywordflow" > return< / span > TRACK_TYPE_SD;< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < span class = "keywordflow" > if< / span > (track_type_string == < span class = "stringliteral" > " HD" < / span > )< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "keywordflow" > return< / span > TRACK_TYPE_HD;< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   < span class = "keywordflow" > if< / span > (track_type_string == < span class = "stringliteral" > " AUDIO" < / span > )< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < span class = "keywordflow" > return< / span > TRACK_TYPE_AUDIO;< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   < span class = "keywordflow" > if< / span > (track_type_string == < span class = "stringliteral" > " UNSPECIFIED" < / span > )< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < span class = "keywordflow" > return< / span > TRACK_TYPE_UNSPECIFIED;< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   LOG(WARNING) < < < span class = "stringliteral" > " Unexpected track type: " < / span > < < track_type_string;< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < span class = "keywordflow" > return< / span > TRACK_TYPE_UNKNOWN;< / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   }< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   < / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a8bab239dd17b01ed607c483c536d1321" > 150< / a > < / span >   std::string < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a8bab239dd17b01ed607c483c536d1321" > KeySource::TrackTypeToString< / a > (TrackType track_type) {< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < span class = "keywordflow" > switch< / span > (track_type) {< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   < span class = "keywordflow" > case< / span > TRACK_TYPE_SD:< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < span class = "keywordflow" > return< / span > < span class = "stringliteral" > " SD" < / span > ;< / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   < span class = "keywordflow" > case< / span > TRACK_TYPE_HD:< / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < span class = "keywordflow" > return< / span > < span class = "stringliteral" > " HD" < / span > ;< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   < span class = "keywordflow" > case< / span > TRACK_TYPE_AUDIO:< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   < span class = "keywordflow" > return< / span > < span class = "stringliteral" > " AUDIO" < / span > ;< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   NOTIMPLEMENTED() < < < span class = "stringliteral" > " Unknown track type: " < / span > < < track_type;< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   < span class = "keywordflow" > return< / span > < span class = "stringliteral" > " UNKNOWN" < / span > ;< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   }< / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   }< / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   < / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab5478505cfdb660fa6c680819f17f239" > 164< / a > < / span >   std::vector< uint8_t> < a class = "code" href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab5478505cfdb660fa6c680819f17f239" > KeySource::PsshBoxFromPsshData< / a > (< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   < span class = "keyword" > const< / span > std::vector< uint8_t> & pssh_data) {< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   < span class = "keyword" > const< / span > uint8_t kPsshFourCC[] = {< span class = "charliteral" > ' p' < / span > , < span class = "charliteral" > ' s' < / span > , < span class = "charliteral" > ' s' < / span > , < span class = "charliteral" > ' h' < / span > };< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   < span class = "keyword" > const< / span > uint32_t kVersionAndFlags = 0;< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   < / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   < span class = "keyword" > const< / span > uint32_t pssh_data_size = pssh_data.size();< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   < span class = "keyword" > const< / span > uint32_t total_size =< / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   < span class = "keyword" > sizeof< / span > (total_size) + < span class = "keyword" > sizeof< / span > (kPsshFourCC) + < span class = "keyword" > sizeof< / span > (kVersionAndFlags) +< / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   < span class = "keyword" > sizeof< / span > (kWidevineSystemId) + < span class = "keyword" > sizeof< / span > (pssh_data_size) + pssh_data_size;< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   < / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   < a class = "code" href = "../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html" > BufferWriter< / a > writer;< / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   writer.< a class = "code" href = "../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115" > AppendInt< / a > (total_size);< / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   writer.AppendArray(kPsshFourCC, < span class = "keyword" > sizeof< / span > (kPsshFourCC));< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   writer.< a class = "code" href = "../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115" > AppendInt< / a > (kVersionAndFlags);< / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   writer.AppendArray(kWidevineSystemId, < span class = "keyword" > sizeof< / span > (kWidevineSystemId));< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   writer.< a class = "code" href = "../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#afd1449487750c41331a2d91ac417f115" > AppendInt< / a > (pssh_data_size);< / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   writer.AppendVector(pssh_data);< / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < span class = "keywordflow" > return< / span > std::vector< uint8_t> (writer.< a class = "code" href = "../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#a8849c495e9e5cb0c33d7633fecbe0643" > Buffer< / a > (), writer.< a class = "code" href = "../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#a8849c495e9e5cb0c33d7633fecbe0643" > Buffer< / a > () + writer.Size());< / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   }< / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   < / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   KeySource::KeySource() {}< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   KeySource::KeySource(scoped_ptr< EncryptionKey> encryption_key)< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   : encryption_key_(encryption_key.Pass()) {< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   DCHECK(encryption_key_);< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   }< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   < / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   } < span class = "comment" > // namespace edash_packager< / span > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1KeySource_html_a49ccfe7a61c36ac9818482a7892915d3" > < div class = "ttname" > < a href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a49ccfe7a61c36ac9818482a7892915d3" > edash_packager::media::KeySource::GetKey< / a > < / div > < div class = "ttdeci" > virtual Status GetKey(TrackType track_type, EncryptionKey *key)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d7/dd6/key__source_8cc_source.html#l00046" > key_source.cc:46< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1KeySource_html_a349381b866a37df15a931980636621ac" > < div class = "ttname" > < a href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a349381b866a37df15a931980636621ac" > edash_packager::media::KeySource::GetCryptoPeriodKey< / a > < / div > < div class = "ttdeci" > virtual Status GetCryptoPeriodKey(uint32_t crypto_period_index, TrackType track_type, EncryptionKey *key)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d7/dd6/key__source_8cc_source.html#l00066" > key_source.cc:66< / a > < / div > < / div >
< div class = "ttc" id = "structedash__packager_1_1media_1_1EncryptionKey_html" > < div class = "ttname" > < a href = "../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html" > edash_packager::media::EncryptionKey< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dc/d3f/key__source_8h_source.html#l00018" > key_source.h:18< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1Status_html" > < div class = "ttname" > < a href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > edash_packager::media::Status< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/d13/status_8h_source.html#l00076" > status.h:76< / 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< uint8_t > & content_id, const std::string & 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_afbb7d084395a1426eb0143ae8357b2fc" > < div class = "ttname" > < a href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#afbb7d084395a1426eb0143ae8357b2fc" > edash_packager::media::KeySource::UUID< / a > < / div > < div class = "ttdeci" > virtual std::string UUID()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d7/dd6/key__source_8cc_source.html#l00092" > key_source.cc:92< / 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_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#l00024" > buffer_writer.cc:24< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1KeySource_html_ab05172d89513c0d3627502c9cff4535f" > < div class = "ttname" > < a href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab05172d89513c0d3627502c9cff4535f" > edash_packager::media::KeySource::CreateFromHexStrings< / a > < / div > < div class = "ttdeci" > static scoped_ptr< KeySource > CreateFromHexStrings(const std::string & key_id_hex, const std::string & key_hex, const std::string & pssh_data_hex, const std::string & iv_hex)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d7/dd6/key__source_8cc_source.html#l00100" > key_source.cc:100< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1BufferWriter_html_a8849c495e9e5cb0c33d7633fecbe0643" > < div class = "ttname" > < a href = "../../df/dde/classedash__packager_1_1media_1_1BufferWriter.html#a8849c495e9e5cb0c33d7633fecbe0643" > edash_packager::media::BufferWriter::Buffer< / a > < / div > < div class = "ttdeci" > const uint8_t * Buffer() const < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dd/dd2/buffer__writer_8h_source.html#l00059" > buffer_writer.h:59< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1KeySource_html_ab5478505cfdb660fa6c680819f17f239" > < div class = "ttname" > < a href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab5478505cfdb660fa6c680819f17f239" > edash_packager::media::KeySource::PsshBoxFromPsshData< / a > < / div > < div class = "ttdeci" > static std::vector< uint8_t > PsshBoxFromPsshData(const std::vector< uint8_t > & pssh_data)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d7/dd6/key__source_8cc_source.html#l00164" > key_source.cc:164< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1KeySource_html_aa73dacef997e7700b8669bb2db5f8f31" > < div class = "ttname" > < a href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#aa73dacef997e7700b8669bb2db5f8f31" > edash_packager::media::KeySource::SystemName< / a > < / div > < div class = "ttdeci" > virtual std::string SystemName()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d7/dd6/key__source_8cc_source.html#l00096" > key_source.cc:96< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1KeySource_html_ab15ba8121f76e0945d4f10d722da5cc8" > < div class = "ttname" > < a href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#ab15ba8121f76e0945d4f10d722da5cc8" > edash_packager::media::KeySource::GetTrackTypeFromString< / a > < / div > < div class = "ttdeci" > static TrackType GetTrackTypeFromString(const std::string & track_type_string)< / div > < div class = "ttdoc" > Convert string representation of track type to enum representation. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d7/dd6/key__source_8cc_source.html#l00136" > key_source.cc:136< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1KeySource_html_a8bab239dd17b01ed607c483c536d1321" > < div class = "ttname" > < a href = "../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html#a8bab239dd17b01ed607c483c536d1321" > edash_packager::media::KeySource::TrackTypeToString< / a > < / div > < div class = "ttdeci" > static std::string TrackTypeToString(TrackType track_type)< / div > < div class = "ttdoc" > Convert TrackType to string. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d7/dd6/key__source_8cc_source.html#l00150" > key_source.cc:150< / 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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