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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_65f7acfa8cf3a5f1edc11faa2428b914.html" > formats< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_3e9291fd7a18fdecc763294cb2628910.html" > mp4< / a > < / li > < / ul >
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< div class = "title" > encrypting_fragmenter.cc< / div > < / div >
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< 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/encrypting_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/base/buffer_reader.h" < / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "preprocessor" > #include " packager/media/base/key_source.h" < / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > #include " packager/media/base/media_sample.h" < / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "preprocessor" > #include " packager/media/formats/mp4/box_definitions.h" < / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "preprocessor" > #include " packager/media/formats/mp4/cenc.h" < / span > < / 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 >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "comment" > // Generate 64bit IV by default.< / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > kDefaultIvSize = 8u;< / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "keyword" > namespace < / span > edash_packager {< / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "keyword" > namespace < / span > mp4 {< / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > < a class = "line" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae4352e452ece69206073274efd855f44" > 25< / a > < / span >   < a class = "code" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae4352e452ece69206073274efd855f44" > EncryptingFragmenter::EncryptingFragmenter< / a > (< / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < a class = "code" href = "../../d4/dd9/structedash__packager_1_1media_1_1mp4_1_1TrackFragment.html" > TrackFragment< / a > * traf,< / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   scoped_ptr< EncryptionKey> encryption_key,< / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   int64_t clear_time,< / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   uint8_t nalu_length_size)< / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   : < a class = "code" href = "../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html" > Fragmenter< / a > (traf),< / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   encryption_key_(encryption_key.Pass()),< / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   nalu_length_size_(nalu_length_size),< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   clear_time_(clear_time) {< / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   DCHECK(encryption_key_);< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   }< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   EncryptingFragmenter::~EncryptingFragmenter() {}< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < / div >
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< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > < a class = "line" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae8fd13a579fee2167167bcdbb9637dcc" > 39< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae8fd13a579fee2167167bcdbb9637dcc" > EncryptingFragmenter::AddSample< / a > (scoped_refptr< MediaSample> sample) {< / div >
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< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   DCHECK(sample);< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   < span class = "keywordflow" > if< / span > (!fragment_initialized()) {< / div >
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< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > status = < a class = "code" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3159dcc8d0f02da113715a97d096afef" > InitializeFragment< / a > (sample-> dts());< / div >
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< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   }< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < span class = "keywordflow" > if< / span > (encryptor_) {< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > status = EncryptSample(sample);< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   }< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a81d8b1f324bdd2bc9cc2e5a469243926" > Fragmenter::AddSample< / a > (sample);< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   }< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < / div >
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< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > < a class = "line" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3159dcc8d0f02da113715a97d096afef" > 54< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3159dcc8d0f02da113715a97d096afef" > EncryptingFragmenter::InitializeFragment< / a > (int64_t first_sample_dts) {< / div >
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< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > status = < a class = "code" href = "../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ab55cbcb40b4c1308d70052a4b8ccd6af" > Fragmenter::InitializeFragment< / a > (first_sample_dts);< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "keywordflow" > if< / span > (!status.ok())< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "keywordflow" > return< / span > status;< / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   traf()-> auxiliary_size.sample_info_sizes.clear();< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   traf()-> auxiliary_offset.offsets.clear();< / 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 >   < span class = "keyword" > const< / span > < span class = "keywordtype" > bool< / span > enable_encryption = clear_time_ < = 0;< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "keywordflow" > if< / span > (!enable_encryption) {< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   < span class = "comment" > // This fragment should be in clear text.< / span > < / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   < span class = "comment" > // At most two sample description entries, an encrypted entry and a clear< / span > < / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "comment" > // entry, are generated. The 1-based clear entry index is always 2.< / span > < / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < span class = "keyword" > const< / span > uint32_t kClearSampleDescriptionIndex = 2;< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   traf()-> header.flags |=< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   TrackFragmentHeader::kSampleDescriptionIndexPresentMask;< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   traf()-> header.sample_description_index = kClearSampleDescriptionIndex;< / 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 >   < span class = "keywordflow" > return< / span > < a class = "code" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3e66313de4ecb51f23fe438758e0153b" > PrepareFragmentForEncryption< / a > (enable_encryption);< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   }< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < / div >
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< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > < a class = "line" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a7917221a0f5093ad6770926ee0ae0ce2" > 76< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a7917221a0f5093ad6770926ee0ae0ce2" > EncryptingFragmenter::FinalizeFragment< / a > () {< / div >
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< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   < span class = "keywordflow" > if< / span > (encryptor_) {< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   DCHECK_LE(clear_time_, 0);< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < a class = "code" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0184deccbe7e99ea7a685cf0de2f9156" > FinalizeFragmentForEncryption< / a > ();< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   DCHECK_GT(clear_time_, 0);< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   clear_time_ -= fragment_duration();< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   }< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   < a class = "code" href = "../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a5f346308fec8fa24cf47cf7ffd21d741" > Fragmenter::FinalizeFragment< / a > ();< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   }< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > < a class = "line" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3e66313de4ecb51f23fe438758e0153b" > 87< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3e66313de4ecb51f23fe438758e0153b" > EncryptingFragmenter::PrepareFragmentForEncryption< / a > (< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < span class = "keywordtype" > bool< / span > enable_encryption) {< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "keywordflow" > return< / span > (!enable_encryption || encryptor_) ? Status::OK : < a class = "code" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5ed5486f22438e20d0d41524a47f4dd3" > CreateEncryptor< / a > ();< / 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 = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0184deccbe7e99ea7a685cf0de2f9156" > 92< / a > < / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0184deccbe7e99ea7a685cf0de2f9156" > EncryptingFragmenter::FinalizeFragmentForEncryption< / a > () {< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   < span class = "comment" > // The offset will be adjusted in Segmenter after knowing moof size.< / span > < / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   traf()-> auxiliary_offset.offsets.push_back(0);< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "comment" > // Optimize saiz box.< / span > < / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < a class = "code" href = "../../d2/d51/structedash__packager_1_1media_1_1mp4_1_1SampleAuxiliaryInformationSize.html" > SampleAuxiliaryInformationSize< / a > & saiz = traf()-> auxiliary_size;< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   saiz.sample_count = traf()-> runs[0].sample_sizes.size();< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   < span class = "keywordflow" > if< / span > (!saiz.sample_info_sizes.empty()) {< / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   < span class = "keywordflow" > if< / span > (!< a class = "code" href = "../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ae51bbd5482783890e9843fd3ca61f2bb" > OptimizeSampleEntries< / a > (& saiz.sample_info_sizes,< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   & saiz.default_sample_info_size)) {< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   saiz.default_sample_info_size = 0;< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   }< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < span class = "comment" > // |sample_info_sizes| table is filled in only for subsample encryption,< / span > < / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   < span class = "comment" > // otherwise |sample_info_size| is just the IV size.< / span > < / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   DCHECK(!IsSubsampleEncryptionRequired());< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   saiz.default_sample_info_size = encryptor_-> iv().size();< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   }< / 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" > < a class = "line" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5ed5486f22438e20d0d41524a47f4dd3" > 112< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5ed5486f22438e20d0d41524a47f4dd3" > EncryptingFragmenter::CreateEncryptor< / a > () {< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   DCHECK(encryption_key_);< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   < / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   scoped_ptr< AesCtrEncryptor> encryptor(< span class = "keyword" > new< / span > < a class = "code" href = "../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html" > AesCtrEncryptor< / a > ());< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > bool< / span > initialized = encryption_key_-> iv.empty()< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   ? encryptor-> InitializeWithRandomIv(< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   encryption_key_-> key, kDefaultIvSize)< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   : encryptor-> InitializeWithIv(< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   encryption_key_-> key, encryption_key_-> iv);< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "keywordflow" > if< / span > (!initialized)< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > (error::MUXER_FAILURE, < span class = "stringliteral" > " Failed to create the encryptor." < / span > );< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   encryptor_ = encryptor.Pass();< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   }< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   < / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < span class = "keywordtype" > void< / span > EncryptingFragmenter::EncryptBytes(uint8_t* data, uint32_t size) {< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   DCHECK(encryptor_);< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   CHECK(encryptor_-> Encrypt(data, size, data));< / 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 >   < / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > EncryptingFragmenter::EncryptSample(scoped_refptr< MediaSample> sample) {< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   DCHECK(encryptor_);< / 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 >   FrameCENCInfo cenc_info(encryptor_-> iv());< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   uint8_t* data = sample-> writable_data();< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   < span class = "keywordflow" > if< / span > (!IsSubsampleEncryptionRequired()) {< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   EncryptBytes(data, sample-> data_size());< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   BufferReader reader(data, sample-> data_size());< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < span class = "keywordflow" > while< / span > (reader.HasBytes(1)) {< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   uint64_t nalu_length;< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < span class = "keywordflow" > if< / span > (!reader.ReadNBytesInto8(& nalu_length, nalu_length_size_))< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   < span class = "keywordflow" > return< / span > Status(error::MUXER_FAILURE, < span class = "stringliteral" > " Fail to read nalu_length." < / span > );< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   SubsampleEntry subsample;< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   subsample.clear_bytes = nalu_length_size_ + 1;< / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   subsample.cipher_bytes = nalu_length - 1;< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   < span class = "keywordflow" > if< / span > (!reader.SkipBytes(nalu_length)) {< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   < span class = "keywordflow" > return< / span > Status(error::MUXER_FAILURE,< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < span class = "stringliteral" > " Sample size does not match nalu_length." < / span > );< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   }< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < / div >
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   EncryptBytes(data + subsample.clear_bytes, subsample.cipher_bytes);< / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   cenc_info.AddSubsample(subsample);< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   data += nalu_length_size_ + nalu_length;< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   }< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   < / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   < span class = "comment" > // The length of per-sample auxiliary datum, defined in CENC ch. 7.< / span > < / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   traf()-> auxiliary_size.sample_info_sizes.push_back(cenc_info.ComputeSize());< / 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 >   cenc_info.Write(aux_data());< / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   encryptor_-> UpdateIv();< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   }< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   < / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   } < span class = "comment" > // namespace mp4< / span > < / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   } < span class = "comment" > // namespace edash_packager< / span > < / div >
2015-10-28 00:32:32 +00:00
< div class = "ttc" id = "structedash__packager_1_1media_1_1mp4_1_1SampleAuxiliaryInformationSize_html" > < div class = "ttname" > < a href = "../../d2/d51/structedash__packager_1_1media_1_1mp4_1_1SampleAuxiliaryInformationSize.html" > edash_packager::media::mp4::SampleAuxiliaryInformationSize< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d5/d7b/box__definitions_8h_source.html#l00064" > box_definitions.h:64< / a > < / div > < / div >
2015-10-16 00:33:37 +00:00
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html" > < div class = "ttname" > < a href = "../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html" > edash_packager::media::mp4::Fragmenter< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../da/dd1/fragmenter_8h_source.html#l00029" > fragmenter.h:29< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a5ed5486f22438e20d0d41524a47f4dd3" > < div class = "ttname" > < a href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a5ed5486f22438e20d0d41524a47f4dd3" > edash_packager::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#l00112" > encrypting_fragmenter.cc:112< / 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 >
2015-10-19 17:27:30 +00:00
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a3159dcc8d0f02da113715a97d096afef" > < div class = "ttname" > < a href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3159dcc8d0f02da113715a97d096afef" > edash_packager::media::mp4::EncryptingFragmenter::InitializeFragment< / a > < / div > < div class = "ttdeci" > Status InitializeFragment(int64_t first_sample_dts) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d41/encrypting__fragmenter_8cc_source.html#l00054" > encrypting_fragmenter.cc:54< / a > < / div > < / div >
2015-10-16 00:33:37 +00:00
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_ab55cbcb40b4c1308d70052a4b8ccd6af" > < div class = "ttname" > < a href = "../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ab55cbcb40b4c1308d70052a4b8ccd6af" > edash_packager::media::mp4::Fragmenter::InitializeFragment< / a > < / div > < div class = "ttdeci" > virtual Status InitializeFragment(int64_t first_sample_dts)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d8/d9a/fragmenter_8cc_source.html#l00073" > fragmenter.cc:73< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_a81d8b1f324bdd2bc9cc2e5a469243926" > < div class = "ttname" > < a href = "../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a81d8b1f324bdd2bc9cc2e5a469243926" > edash_packager::media::mp4::Fragmenter::AddSample< / a > < / div > < div class = "ttdeci" > virtual Status AddSample(scoped_refptr< MediaSample > sample)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d8/d9a/fragmenter_8cc_source.html#l00036" > fragmenter.cc:36< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_ae51bbd5482783890e9843fd3ca61f2bb" > < div class = "ttname" > < a href = "../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#ae51bbd5482783890e9843fd3ca61f2bb" > edash_packager::media::mp4::Fragmenter::OptimizeSampleEntries< / a > < / div > < div class = "ttdeci" > bool OptimizeSampleEntries(std::vector< T > *entries, T *default_value)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../da/dd1/fragmenter_8h_source.html#l00090" > fragmenter.h:90< / a > < / div > < / div >
2015-10-19 17:27:30 +00:00
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_ae8fd13a579fee2167167bcdbb9637dcc" > < div class = "ttname" > < a href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae8fd13a579fee2167167bcdbb9637dcc" > edash_packager::media::mp4::EncryptingFragmenter::AddSample< / a > < / div > < div class = "ttdeci" > Status AddSample(scoped_refptr< MediaSample > sample) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d41/encrypting__fragmenter_8cc_source.html#l00039" > encrypting_fragmenter.cc:39< / a > < / div > < / div >
2015-10-16 00:33:37 +00:00
< div class = "ttc" id = "classedash__packager_1_1media_1_1AesCtrEncryptor_html" > < div class = "ttname" > < a href = "../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html" > edash_packager::media::AesCtrEncryptor< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/df0/aes__encryptor_8h_source.html#l00025" > aes_encryptor.h:25< / a > < / div > < / div >
2015-10-19 17:27:30 +00:00
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a7917221a0f5093ad6770926ee0ae0ce2" > < div class = "ttname" > < a href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a7917221a0f5093ad6770926ee0ae0ce2" > edash_packager::media::mp4::EncryptingFragmenter::FinalizeFragment< / a > < / div > < div class = "ttdeci" > void FinalizeFragment() override< / div > < div class = "ttdoc" > Finalize and optimize the fragment. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d41/encrypting__fragmenter_8cc_source.html#l00076" > encrypting_fragmenter.cc:76< / a > < / div > < / div >
2015-10-28 00:32:32 +00:00
< div class = "ttc" id = "structedash__packager_1_1media_1_1mp4_1_1TrackFragment_html" > < div class = "ttname" > < a href = "../../d4/dd9/structedash__packager_1_1media_1_1mp4_1_1TrackFragment.html" > edash_packager::media::mp4::TrackFragment< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d5/d7b/box__definitions_8h_source.html#l00521" > box_definitions.h:521< / a > < / div > < / div >
2015-10-16 00:33:37 +00:00
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a3e66313de4ecb51f23fe438758e0153b" > < div class = "ttname" > < a href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a3e66313de4ecb51f23fe438758e0153b" > edash_packager::media::mp4::EncryptingFragmenter::PrepareFragmentForEncryption< / a > < / div > < div class = "ttdeci" > virtual Status PrepareFragmentForEncryption(bool enable_encryption)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d41/encrypting__fragmenter_8cc_source.html#l00087" > encrypting_fragmenter.cc:87< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_ae4352e452ece69206073274efd855f44" > < div class = "ttname" > < a href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#ae4352e452ece69206073274efd855f44" > edash_packager::media::mp4::EncryptingFragmenter::EncryptingFragmenter< / a > < / div > < div class = "ttdeci" > EncryptingFragmenter(TrackFragment *traf, scoped_ptr< EncryptionKey > encryption_key, int64_t clear_time, uint8_t nalu_length_size)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d41/encrypting__fragmenter_8cc_source.html#l00025" > encrypting_fragmenter.cc:25< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter_html_a0184deccbe7e99ea7a685cf0de2f9156" > < div class = "ttname" > < a href = "../../d8/d1e/classedash__packager_1_1media_1_1mp4_1_1EncryptingFragmenter.html#a0184deccbe7e99ea7a685cf0de2f9156" > edash_packager::media::mp4::EncryptingFragmenter::FinalizeFragmentForEncryption< / a > < / div > < div class = "ttdeci" > virtual void FinalizeFragmentForEncryption()< / div > < div class = "ttdoc" > Finalize current fragment for encryption. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d41/encrypting__fragmenter_8cc_source.html#l00092" > encrypting_fragmenter.cc:92< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1mp4_1_1Fragmenter_html_a5f346308fec8fa24cf47cf7ffd21d741" > < div class = "ttname" > < a href = "../../db/dae/classedash__packager_1_1media_1_1mp4_1_1Fragmenter.html#a5f346308fec8fa24cf47cf7ffd21d741" > edash_packager::media::mp4::Fragmenter::FinalizeFragment< / a > < / div > < div class = "ttdeci" > virtual void FinalizeFragment()< / div > < div class = "ttdoc" > Finalize and optimize the fragment. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d8/d9a/fragmenter_8cc_source.html#l00091" > fragmenter.cc:91< / a > < / div > < / div >
< / div > <!-- fragment --> < / div > <!-- contents -->
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2015-11-18 00:22:42 +00:00
Generated on Wed Nov 18 2015 00:22:36 for DASH Media Packaging SDK by   < a href = "http://www.doxygen.org/index.html" >
2015-10-16 00:33:37 +00:00
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